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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
0b302171 | 3 | Copyright (C) 1986-2012 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
a6d9a66e | 21 | #include "arch-utils.h" |
c906108c | 22 | #include <ctype.h> |
776592bf | 23 | #include "hashtab.h" |
c906108c SS |
24 | #include "symtab.h" |
25 | #include "frame.h" | |
26 | #include "breakpoint.h" | |
1042e4c0 | 27 | #include "tracepoint.h" |
c906108c SS |
28 | #include "gdbtypes.h" |
29 | #include "expression.h" | |
30 | #include "gdbcore.h" | |
31 | #include "gdbcmd.h" | |
32 | #include "value.h" | |
33 | #include "command.h" | |
34 | #include "inferior.h" | |
35 | #include "gdbthread.h" | |
36 | #include "target.h" | |
37 | #include "language.h" | |
38 | #include "gdb_string.h" | |
50f182aa | 39 | #include "gdb-demangle.h" |
0ba1096a | 40 | #include "filenames.h" |
c906108c SS |
41 | #include "annotate.h" |
42 | #include "symfile.h" | |
43 | #include "objfiles.h" | |
0378c332 | 44 | #include "source.h" |
c5f0f3d0 | 45 | #include "linespec.h" |
c94fdfd0 | 46 | #include "completer.h" |
5b7f31a4 | 47 | #include "gdb.h" |
8b93c638 | 48 | #include "ui-out.h" |
e1507482 | 49 | #include "cli/cli-script.h" |
0225421b | 50 | #include "gdb_assert.h" |
fe898f56 | 51 | #include "block.h" |
a77053c2 | 52 | #include "solib.h" |
84acb35a JJ |
53 | #include "solist.h" |
54 | #include "observer.h" | |
60250e8b | 55 | #include "exceptions.h" |
765dc015 | 56 | #include "memattr.h" |
f7f9143b | 57 | #include "ada-lang.h" |
d1aa2f50 | 58 | #include "top.h" |
79a45b7d | 59 | #include "valprint.h" |
4efc6507 | 60 | #include "jit.h" |
a96d9b2e | 61 | #include "xml-syscall.h" |
65d79d4b | 62 | #include "parser-defs.h" |
55aa24fb SDJ |
63 | #include "gdb_regex.h" |
64 | #include "probe.h" | |
e9cafbcc | 65 | #include "cli/cli-utils.h" |
be34f849 | 66 | #include "continuations.h" |
1bfeeb0f JL |
67 | #include "stack.h" |
68 | #include "skip.h" | |
edcc5120 | 69 | #include "gdb_regex.h" |
b775012e | 70 | #include "ax-gdb.h" |
e2e4d78b | 71 | #include "dummy-frame.h" |
c906108c | 72 | |
d3ce09f5 SS |
73 | #include "format.h" |
74 | ||
1042e4c0 SS |
75 | /* readline include files */ |
76 | #include "readline/readline.h" | |
77 | #include "readline/history.h" | |
78 | ||
79 | /* readline defines this. */ | |
80 | #undef savestring | |
81 | ||
034dad6f | 82 | #include "mi/mi-common.h" |
7371cf6d | 83 | #include "python/python.h" |
104c1213 | 84 | |
4a64f543 | 85 | /* Prototypes for local functions. */ |
c906108c | 86 | |
a14ed312 | 87 | static void enable_delete_command (char *, int); |
c906108c | 88 | |
a14ed312 | 89 | static void enable_once_command (char *, int); |
c906108c | 90 | |
816338b5 SS |
91 | static void enable_count_command (char *, int); |
92 | ||
a14ed312 | 93 | static void disable_command (char *, int); |
c906108c | 94 | |
a14ed312 | 95 | static void enable_command (char *, int); |
c906108c | 96 | |
95a42b64 TT |
97 | static void map_breakpoint_numbers (char *, void (*) (struct breakpoint *, |
98 | void *), | |
99 | void *); | |
c906108c | 100 | |
a14ed312 | 101 | static void ignore_command (char *, int); |
c906108c | 102 | |
4efb68b1 | 103 | static int breakpoint_re_set_one (void *); |
c906108c | 104 | |
348d480f PA |
105 | static void breakpoint_re_set_default (struct breakpoint *); |
106 | ||
983af33b SDJ |
107 | static void create_sals_from_address_default (char **, |
108 | struct linespec_result *, | |
109 | enum bptype, char *, | |
110 | char **); | |
111 | ||
112 | static void create_breakpoints_sal_default (struct gdbarch *, | |
113 | struct linespec_result *, | |
114 | struct linespec_sals *, | |
e7e0cddf | 115 | char *, char *, enum bptype, |
983af33b SDJ |
116 | enum bpdisp, int, int, |
117 | int, | |
118 | const struct breakpoint_ops *, | |
44f238bb | 119 | int, int, int, unsigned); |
983af33b SDJ |
120 | |
121 | static void decode_linespec_default (struct breakpoint *, char **, | |
122 | struct symtabs_and_lines *); | |
123 | ||
a14ed312 | 124 | static void clear_command (char *, int); |
c906108c | 125 | |
a14ed312 | 126 | static void catch_command (char *, int); |
c906108c | 127 | |
a9634178 | 128 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 129 | |
98deb0da | 130 | static void break_command_1 (char *, int, int); |
c906108c | 131 | |
a14ed312 | 132 | static void mention (struct breakpoint *); |
c906108c | 133 | |
348d480f PA |
134 | static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *, |
135 | enum bptype, | |
c0a91b2b | 136 | const struct breakpoint_ops *); |
3742cc8b YQ |
137 | static struct bp_location *add_location_to_breakpoint (struct breakpoint *, |
138 | const struct symtab_and_line *); | |
139 | ||
4a64f543 MS |
140 | /* This function is used in gdbtk sources and thus can not be made |
141 | static. */ | |
63c252f8 | 142 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
348d480f | 143 | struct symtab_and_line, |
c0a91b2b TT |
144 | enum bptype, |
145 | const struct breakpoint_ops *); | |
c906108c | 146 | |
06edf0c0 PA |
147 | static struct breakpoint * |
148 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
149 | enum bptype type, | |
c0a91b2b | 150 | const struct breakpoint_ops *ops); |
06edf0c0 | 151 | |
76897487 KB |
152 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
153 | ||
a6d9a66e UW |
154 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
155 | CORE_ADDR bpaddr, | |
88f7da05 | 156 | enum bptype bptype); |
76897487 | 157 | |
6c95b8df PA |
158 | static void describe_other_breakpoints (struct gdbarch *, |
159 | struct program_space *, CORE_ADDR, | |
5af949e3 | 160 | struct obj_section *, int); |
c906108c | 161 | |
6c95b8df PA |
162 | static int breakpoint_address_match (struct address_space *aspace1, |
163 | CORE_ADDR addr1, | |
164 | struct address_space *aspace2, | |
165 | CORE_ADDR addr2); | |
166 | ||
85d721b8 PA |
167 | static int watchpoint_locations_match (struct bp_location *loc1, |
168 | struct bp_location *loc2); | |
169 | ||
f1310107 TJB |
170 | static int breakpoint_location_address_match (struct bp_location *bl, |
171 | struct address_space *aspace, | |
172 | CORE_ADDR addr); | |
173 | ||
a14ed312 | 174 | static void breakpoints_info (char *, int); |
c906108c | 175 | |
d77f58be SS |
176 | static void watchpoints_info (char *, int); |
177 | ||
e5a67952 MS |
178 | static int breakpoint_1 (char *, int, |
179 | int (*) (const struct breakpoint *)); | |
c906108c | 180 | |
4efb68b1 | 181 | static int breakpoint_cond_eval (void *); |
c906108c | 182 | |
4efb68b1 | 183 | static void cleanup_executing_breakpoints (void *); |
c906108c | 184 | |
a14ed312 | 185 | static void commands_command (char *, int); |
c906108c | 186 | |
a14ed312 | 187 | static void condition_command (char *, int); |
c906108c | 188 | |
c5aa993b JM |
189 | typedef enum |
190 | { | |
191 | mark_inserted, | |
192 | mark_uninserted | |
193 | } | |
194 | insertion_state_t; | |
c906108c | 195 | |
0bde7532 | 196 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
6c95b8df | 197 | static int remove_breakpoint_1 (struct bp_location *, insertion_state_t); |
c906108c | 198 | |
e514a9d6 | 199 | static enum print_stop_action print_bp_stop_message (bpstat bs); |
c906108c | 200 | |
4efb68b1 | 201 | static int watchpoint_check (void *); |
c906108c | 202 | |
a14ed312 | 203 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 204 | |
a14ed312 | 205 | static int hw_breakpoint_used_count (void); |
c906108c | 206 | |
a1398e0c PA |
207 | static int hw_watchpoint_use_count (struct breakpoint *); |
208 | ||
209 | static int hw_watchpoint_used_count_others (struct breakpoint *except, | |
210 | enum bptype type, | |
211 | int *other_type_used); | |
c906108c | 212 | |
a14ed312 | 213 | static void hbreak_command (char *, int); |
c906108c | 214 | |
a14ed312 | 215 | static void thbreak_command (char *, int); |
c906108c | 216 | |
816338b5 SS |
217 | static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp, |
218 | int count); | |
c906108c | 219 | |
a14ed312 | 220 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 221 | |
a14ed312 | 222 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 223 | |
a14ed312 | 224 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 225 | |
a14ed312 | 226 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 227 | |
d85310f7 MS |
228 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
229 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 230 | |
a14ed312 | 231 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 232 | |
d03285ec UW |
233 | static void detach_single_step_breakpoints (void); |
234 | ||
6c95b8df PA |
235 | static int single_step_breakpoint_inserted_here_p (struct address_space *, |
236 | CORE_ADDR pc); | |
1aafd4da | 237 | |
fe3f5fa8 | 238 | static void free_bp_location (struct bp_location *loc); |
f431efe5 PA |
239 | static void incref_bp_location (struct bp_location *loc); |
240 | static void decref_bp_location (struct bp_location **loc); | |
fe3f5fa8 | 241 | |
39d61571 | 242 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 243 | |
b60e7edf | 244 | static void update_global_location_list (int); |
a5606eee | 245 | |
b60e7edf | 246 | static void update_global_location_list_nothrow (int); |
74960c60 | 247 | |
d77f58be | 248 | static int is_hardware_watchpoint (const struct breakpoint *bpt); |
74960c60 VP |
249 | |
250 | static void insert_breakpoint_locations (void); | |
a5606eee | 251 | |
a96d9b2e SDJ |
252 | static int syscall_catchpoint_p (struct breakpoint *b); |
253 | ||
1042e4c0 SS |
254 | static void tracepoints_info (char *, int); |
255 | ||
256 | static void delete_trace_command (char *, int); | |
257 | ||
258 | static void enable_trace_command (char *, int); | |
259 | ||
260 | static void disable_trace_command (char *, int); | |
261 | ||
262 | static void trace_pass_command (char *, int); | |
263 | ||
9c06b0b4 TJB |
264 | static int is_masked_watchpoint (const struct breakpoint *b); |
265 | ||
b775012e LM |
266 | static struct bp_location **get_first_locp_gte_addr (CORE_ADDR address); |
267 | ||
983af33b SDJ |
268 | /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero |
269 | otherwise. */ | |
270 | ||
271 | static int strace_marker_p (struct breakpoint *b); | |
0fb4aa4b | 272 | |
edcc5120 TT |
273 | static void init_catchpoint (struct breakpoint *b, |
274 | struct gdbarch *gdbarch, int tempflag, | |
275 | char *cond_string, | |
276 | const struct breakpoint_ops *ops); | |
277 | ||
2060206e PA |
278 | /* The abstract base class all breakpoint_ops structures inherit |
279 | from. */ | |
280 | static struct breakpoint_ops base_breakpoint_ops; | |
281 | ||
282 | /* The breakpoint_ops structure to be inherited by all breakpoint_ops | |
283 | that are implemented on top of software or hardware breakpoints | |
284 | (user breakpoints, internal and momentary breakpoints, etc.). */ | |
285 | static struct breakpoint_ops bkpt_base_breakpoint_ops; | |
286 | ||
287 | /* Internal breakpoints class type. */ | |
06edf0c0 | 288 | static struct breakpoint_ops internal_breakpoint_ops; |
2060206e PA |
289 | |
290 | /* Momentary breakpoints class type. */ | |
06edf0c0 PA |
291 | static struct breakpoint_ops momentary_breakpoint_ops; |
292 | ||
e2e4d78b JK |
293 | /* Momentary breakpoints for bp_longjmp and bp_exception class type. */ |
294 | static struct breakpoint_ops longjmp_breakpoint_ops; | |
295 | ||
2060206e PA |
296 | /* The breakpoint_ops structure to be used in regular user created |
297 | breakpoints. */ | |
298 | struct breakpoint_ops bkpt_breakpoint_ops; | |
299 | ||
55aa24fb SDJ |
300 | /* Breakpoints set on probes. */ |
301 | static struct breakpoint_ops bkpt_probe_breakpoint_ops; | |
302 | ||
e7e0cddf SS |
303 | /* Dynamic printf class type. */ |
304 | static struct breakpoint_ops dprintf_breakpoint_ops; | |
305 | ||
d3ce09f5 SS |
306 | /* The style in which to perform a dynamic printf. This is a user |
307 | option because different output options have different tradeoffs; | |
308 | if GDB does the printing, there is better error handling if there | |
309 | is a problem with any of the arguments, but using an inferior | |
310 | function lets you have special-purpose printers and sending of | |
311 | output to the same place as compiled-in print functions. */ | |
312 | ||
313 | static const char dprintf_style_gdb[] = "gdb"; | |
314 | static const char dprintf_style_call[] = "call"; | |
315 | static const char dprintf_style_agent[] = "agent"; | |
316 | static const char *const dprintf_style_enums[] = { | |
317 | dprintf_style_gdb, | |
318 | dprintf_style_call, | |
319 | dprintf_style_agent, | |
320 | NULL | |
321 | }; | |
322 | static const char *dprintf_style = dprintf_style_gdb; | |
323 | ||
324 | /* The function to use for dynamic printf if the preferred style is to | |
325 | call into the inferior. The value is simply a string that is | |
326 | copied into the command, so it can be anything that GDB can | |
327 | evaluate to a callable address, not necessarily a function name. */ | |
328 | ||
329 | static char *dprintf_function = ""; | |
330 | ||
331 | /* The channel to use for dynamic printf if the preferred style is to | |
332 | call into the inferior; if a nonempty string, it will be passed to | |
333 | the call as the first argument, with the format string as the | |
334 | second. As with the dprintf function, this can be anything that | |
335 | GDB knows how to evaluate, so in addition to common choices like | |
336 | "stderr", this could be an app-specific expression like | |
337 | "mystreams[curlogger]". */ | |
338 | ||
339 | static char *dprintf_channel = ""; | |
340 | ||
341 | /* True if dprintf commands should continue to operate even if GDB | |
342 | has disconnected. */ | |
343 | static int disconnected_dprintf = 1; | |
344 | ||
5cea2a26 PA |
345 | /* A reference-counted struct command_line. This lets multiple |
346 | breakpoints share a single command list. */ | |
347 | struct counted_command_line | |
348 | { | |
349 | /* The reference count. */ | |
350 | int refc; | |
351 | ||
352 | /* The command list. */ | |
353 | struct command_line *commands; | |
354 | }; | |
355 | ||
356 | struct command_line * | |
357 | breakpoint_commands (struct breakpoint *b) | |
358 | { | |
359 | return b->commands ? b->commands->commands : NULL; | |
360 | } | |
3daf8fe5 | 361 | |
f3b1572e PA |
362 | /* Flag indicating that a command has proceeded the inferior past the |
363 | current breakpoint. */ | |
364 | ||
365 | static int breakpoint_proceeded; | |
366 | ||
956a9fb9 | 367 | const char * |
2cec12e5 AR |
368 | bpdisp_text (enum bpdisp disp) |
369 | { | |
4a64f543 MS |
370 | /* NOTE: the following values are a part of MI protocol and |
371 | represent values of 'disp' field returned when inferior stops at | |
372 | a breakpoint. */ | |
bc043ef3 | 373 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 374 | |
2cec12e5 AR |
375 | return bpdisps[(int) disp]; |
376 | } | |
c906108c | 377 | |
4a64f543 | 378 | /* Prototypes for exported functions. */ |
c906108c | 379 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 380 | if such is available. */ |
c906108c SS |
381 | static int can_use_hw_watchpoints; |
382 | ||
920d2a44 AC |
383 | static void |
384 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
385 | struct cmd_list_element *c, | |
386 | const char *value) | |
387 | { | |
3e43a32a MS |
388 | fprintf_filtered (file, |
389 | _("Debugger's willingness to use " | |
390 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
391 | value); |
392 | } | |
393 | ||
fa8d40ab JJ |
394 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
395 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 396 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
397 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
398 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
399 | static void |
400 | show_pending_break_support (struct ui_file *file, int from_tty, | |
401 | struct cmd_list_element *c, | |
402 | const char *value) | |
403 | { | |
3e43a32a MS |
404 | fprintf_filtered (file, |
405 | _("Debugger's behavior regarding " | |
406 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
407 | value); |
408 | } | |
fa8d40ab | 409 | |
765dc015 | 410 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 411 | set with "break" but falling in read-only memory. |
765dc015 VP |
412 | If 0, gdb will warn about such breakpoints, but won't automatically |
413 | use hardware breakpoints. */ | |
414 | static int automatic_hardware_breakpoints; | |
415 | static void | |
416 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
417 | struct cmd_list_element *c, | |
418 | const char *value) | |
419 | { | |
3e43a32a MS |
420 | fprintf_filtered (file, |
421 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
422 | value); |
423 | } | |
424 | ||
33e5cbd6 PA |
425 | /* If on, gdb will keep breakpoints inserted even as inferior is |
426 | stopped, and immediately insert any new breakpoints. If off, gdb | |
427 | will insert breakpoints into inferior only when resuming it, and | |
428 | will remove breakpoints upon stop. If auto, GDB will behave as ON | |
429 | if in non-stop mode, and as OFF if all-stop mode.*/ | |
430 | ||
72d0e2c5 YQ |
431 | static enum auto_boolean always_inserted_mode = AUTO_BOOLEAN_AUTO; |
432 | ||
33e5cbd6 | 433 | static void |
74960c60 | 434 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 435 | struct cmd_list_element *c, const char *value) |
74960c60 | 436 | { |
72d0e2c5 | 437 | if (always_inserted_mode == AUTO_BOOLEAN_AUTO) |
3e43a32a MS |
438 | fprintf_filtered (file, |
439 | _("Always inserted breakpoint " | |
440 | "mode is %s (currently %s).\n"), | |
33e5cbd6 PA |
441 | value, |
442 | breakpoints_always_inserted_mode () ? "on" : "off"); | |
443 | else | |
3e43a32a MS |
444 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
445 | value); | |
74960c60 VP |
446 | } |
447 | ||
33e5cbd6 PA |
448 | int |
449 | breakpoints_always_inserted_mode (void) | |
450 | { | |
72d0e2c5 YQ |
451 | return (always_inserted_mode == AUTO_BOOLEAN_TRUE |
452 | || (always_inserted_mode == AUTO_BOOLEAN_AUTO && non_stop)); | |
33e5cbd6 | 453 | } |
765dc015 | 454 | |
b775012e LM |
455 | static const char condition_evaluation_both[] = "host or target"; |
456 | ||
457 | /* Modes for breakpoint condition evaluation. */ | |
458 | static const char condition_evaluation_auto[] = "auto"; | |
459 | static const char condition_evaluation_host[] = "host"; | |
460 | static const char condition_evaluation_target[] = "target"; | |
461 | static const char *const condition_evaluation_enums[] = { | |
462 | condition_evaluation_auto, | |
463 | condition_evaluation_host, | |
464 | condition_evaluation_target, | |
465 | NULL | |
466 | }; | |
467 | ||
468 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
469 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
470 | ||
471 | /* Global that we use to display information to the user (gets its value from | |
472 | condition_evaluation_mode_1. */ | |
473 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
474 | ||
475 | /* Translate a condition evaluation mode MODE into either "host" | |
476 | or "target". This is used mostly to translate from "auto" to the | |
477 | real setting that is being used. It returns the translated | |
478 | evaluation mode. */ | |
479 | ||
480 | static const char * | |
481 | translate_condition_evaluation_mode (const char *mode) | |
482 | { | |
483 | if (mode == condition_evaluation_auto) | |
484 | { | |
485 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
486 | return condition_evaluation_target; | |
487 | else | |
488 | return condition_evaluation_host; | |
489 | } | |
490 | else | |
491 | return mode; | |
492 | } | |
493 | ||
494 | /* Discovers what condition_evaluation_auto translates to. */ | |
495 | ||
496 | static const char * | |
497 | breakpoint_condition_evaluation_mode (void) | |
498 | { | |
499 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
500 | } | |
501 | ||
502 | /* Return true if GDB should evaluate breakpoint conditions or false | |
503 | otherwise. */ | |
504 | ||
505 | static int | |
506 | gdb_evaluates_breakpoint_condition_p (void) | |
507 | { | |
508 | const char *mode = breakpoint_condition_evaluation_mode (); | |
509 | ||
510 | return (mode == condition_evaluation_host); | |
511 | } | |
512 | ||
a14ed312 | 513 | void _initialize_breakpoint (void); |
c906108c | 514 | |
c906108c SS |
515 | /* Are we executing breakpoint commands? */ |
516 | static int executing_breakpoint_commands; | |
517 | ||
c02f5703 MS |
518 | /* Are overlay event breakpoints enabled? */ |
519 | static int overlay_events_enabled; | |
520 | ||
e09342b5 TJB |
521 | /* See description in breakpoint.h. */ |
522 | int target_exact_watchpoints = 0; | |
523 | ||
c906108c | 524 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 525 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 526 | current breakpoint. */ |
c906108c | 527 | |
5c44784c | 528 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 529 | |
5c44784c JM |
530 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
531 | for (B = breakpoint_chain; \ | |
532 | B ? (TMP=B->next, 1): 0; \ | |
533 | B = TMP) | |
c906108c | 534 | |
4a64f543 MS |
535 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
536 | not provided so update_global_location_list must not be called | |
537 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 538 | |
876fa593 JK |
539 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
540 | for (BP_TMP = bp_location; \ | |
541 | BP_TMP < bp_location + bp_location_count && (B = *BP_TMP); \ | |
542 | BP_TMP++) | |
7cc221ef | 543 | |
b775012e LM |
544 | /* Iterates through locations with address ADDRESS for the currently selected |
545 | program space. BP_LOCP_TMP points to each object. BP_LOCP_START points | |
546 | to where the loop should start from. | |
547 | If BP_LOCP_START is a NULL pointer, the macro automatically seeks the | |
548 | appropriate location to start with. */ | |
549 | ||
550 | #define ALL_BP_LOCATIONS_AT_ADDR(BP_LOCP_TMP, BP_LOCP_START, ADDRESS) \ | |
551 | for (BP_LOCP_START = BP_LOCP_START == NULL ? get_first_locp_gte_addr (ADDRESS) : BP_LOCP_START, \ | |
552 | BP_LOCP_TMP = BP_LOCP_START; \ | |
553 | BP_LOCP_START \ | |
554 | && (BP_LOCP_TMP < bp_location + bp_location_count \ | |
555 | && (*BP_LOCP_TMP)->address == ADDRESS); \ | |
556 | BP_LOCP_TMP++) | |
557 | ||
1042e4c0 SS |
558 | /* Iterator for tracepoints only. */ |
559 | ||
560 | #define ALL_TRACEPOINTS(B) \ | |
561 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 562 | if (is_tracepoint (B)) |
1042e4c0 | 563 | |
7cc221ef | 564 | /* Chains of all breakpoints defined. */ |
c906108c SS |
565 | |
566 | struct breakpoint *breakpoint_chain; | |
567 | ||
876fa593 JK |
568 | /* Array is sorted by bp_location_compare - primarily by the ADDRESS. */ |
569 | ||
570 | static struct bp_location **bp_location; | |
571 | ||
572 | /* Number of elements of BP_LOCATION. */ | |
573 | ||
574 | static unsigned bp_location_count; | |
575 | ||
4a64f543 MS |
576 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
577 | ADDRESS for the current elements of BP_LOCATION which get a valid | |
578 | result from bp_location_has_shadow. You can use it for roughly | |
579 | limiting the subrange of BP_LOCATION to scan for shadow bytes for | |
580 | an address you need to read. */ | |
876fa593 JK |
581 | |
582 | static CORE_ADDR bp_location_placed_address_before_address_max; | |
583 | ||
4a64f543 MS |
584 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
585 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
586 | BP_LOCATION which get a valid result from bp_location_has_shadow. | |
587 | You can use it for roughly limiting the subrange of BP_LOCATION to | |
588 | scan for shadow bytes for an address you need to read. */ | |
876fa593 JK |
589 | |
590 | static CORE_ADDR bp_location_shadow_len_after_address_max; | |
7cc221ef | 591 | |
4a64f543 MS |
592 | /* The locations that no longer correspond to any breakpoint, unlinked |
593 | from bp_location array, but for which a hit may still be reported | |
594 | by a target. */ | |
20874c92 VP |
595 | VEC(bp_location_p) *moribund_locations = NULL; |
596 | ||
c906108c SS |
597 | /* Number of last breakpoint made. */ |
598 | ||
95a42b64 TT |
599 | static int breakpoint_count; |
600 | ||
86b17b60 PA |
601 | /* The value of `breakpoint_count' before the last command that |
602 | created breakpoints. If the last (break-like) command created more | |
603 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
604 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
605 | static int prev_breakpoint_count; | |
c906108c | 606 | |
1042e4c0 SS |
607 | /* Number of last tracepoint made. */ |
608 | ||
95a42b64 | 609 | static int tracepoint_count; |
1042e4c0 | 610 | |
6149aea9 PA |
611 | static struct cmd_list_element *breakpoint_set_cmdlist; |
612 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 613 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 614 | |
468d015d JJ |
615 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
616 | static int | |
617 | breakpoint_enabled (struct breakpoint *b) | |
618 | { | |
0d381245 | 619 | return (b->enable_state == bp_enabled); |
468d015d JJ |
620 | } |
621 | ||
c906108c SS |
622 | /* Set breakpoint count to NUM. */ |
623 | ||
95a42b64 | 624 | static void |
fba45db2 | 625 | set_breakpoint_count (int num) |
c906108c | 626 | { |
86b17b60 | 627 | prev_breakpoint_count = breakpoint_count; |
c906108c | 628 | breakpoint_count = num; |
4fa62494 | 629 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
630 | } |
631 | ||
86b17b60 PA |
632 | /* Used by `start_rbreak_breakpoints' below, to record the current |
633 | breakpoint count before "rbreak" creates any breakpoint. */ | |
634 | static int rbreak_start_breakpoint_count; | |
635 | ||
95a42b64 TT |
636 | /* Called at the start an "rbreak" command to record the first |
637 | breakpoint made. */ | |
86b17b60 | 638 | |
95a42b64 TT |
639 | void |
640 | start_rbreak_breakpoints (void) | |
641 | { | |
86b17b60 | 642 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
643 | } |
644 | ||
645 | /* Called at the end of an "rbreak" command to record the last | |
646 | breakpoint made. */ | |
86b17b60 | 647 | |
95a42b64 TT |
648 | void |
649 | end_rbreak_breakpoints (void) | |
650 | { | |
86b17b60 | 651 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
652 | } |
653 | ||
4a64f543 | 654 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
655 | |
656 | void | |
fba45db2 | 657 | clear_breakpoint_hit_counts (void) |
c906108c SS |
658 | { |
659 | struct breakpoint *b; | |
660 | ||
661 | ALL_BREAKPOINTS (b) | |
662 | b->hit_count = 0; | |
663 | } | |
664 | ||
9add0f1b TT |
665 | /* Allocate a new counted_command_line with reference count of 1. |
666 | The new structure owns COMMANDS. */ | |
667 | ||
668 | static struct counted_command_line * | |
669 | alloc_counted_command_line (struct command_line *commands) | |
670 | { | |
671 | struct counted_command_line *result | |
672 | = xmalloc (sizeof (struct counted_command_line)); | |
cc59ec59 | 673 | |
9add0f1b TT |
674 | result->refc = 1; |
675 | result->commands = commands; | |
676 | return result; | |
677 | } | |
678 | ||
679 | /* Increment reference count. This does nothing if CMD is NULL. */ | |
680 | ||
681 | static void | |
682 | incref_counted_command_line (struct counted_command_line *cmd) | |
683 | { | |
684 | if (cmd) | |
685 | ++cmd->refc; | |
686 | } | |
687 | ||
688 | /* Decrement reference count. If the reference count reaches 0, | |
689 | destroy the counted_command_line. Sets *CMDP to NULL. This does | |
690 | nothing if *CMDP is NULL. */ | |
691 | ||
692 | static void | |
693 | decref_counted_command_line (struct counted_command_line **cmdp) | |
694 | { | |
695 | if (*cmdp) | |
696 | { | |
697 | if (--(*cmdp)->refc == 0) | |
698 | { | |
699 | free_command_lines (&(*cmdp)->commands); | |
700 | xfree (*cmdp); | |
701 | } | |
702 | *cmdp = NULL; | |
703 | } | |
704 | } | |
705 | ||
706 | /* A cleanup function that calls decref_counted_command_line. */ | |
707 | ||
708 | static void | |
709 | do_cleanup_counted_command_line (void *arg) | |
710 | { | |
711 | decref_counted_command_line (arg); | |
712 | } | |
713 | ||
714 | /* Create a cleanup that calls decref_counted_command_line on the | |
715 | argument. */ | |
716 | ||
717 | static struct cleanup * | |
718 | make_cleanup_decref_counted_command_line (struct counted_command_line **cmdp) | |
719 | { | |
720 | return make_cleanup (do_cleanup_counted_command_line, cmdp); | |
721 | } | |
722 | ||
c906108c | 723 | \f |
48cb2d85 VP |
724 | /* Return the breakpoint with the specified number, or NULL |
725 | if the number does not refer to an existing breakpoint. */ | |
726 | ||
727 | struct breakpoint * | |
728 | get_breakpoint (int num) | |
729 | { | |
730 | struct breakpoint *b; | |
731 | ||
732 | ALL_BREAKPOINTS (b) | |
733 | if (b->number == num) | |
734 | return b; | |
735 | ||
736 | return NULL; | |
737 | } | |
5c44784c | 738 | |
c906108c | 739 | \f |
adc36818 | 740 | |
b775012e LM |
741 | /* Mark locations as "conditions have changed" in case the target supports |
742 | evaluating conditions on its side. */ | |
743 | ||
744 | static void | |
745 | mark_breakpoint_modified (struct breakpoint *b) | |
746 | { | |
747 | struct bp_location *loc; | |
748 | ||
749 | /* This is only meaningful if the target is | |
750 | evaluating conditions and if the user has | |
751 | opted for condition evaluation on the target's | |
752 | side. */ | |
753 | if (gdb_evaluates_breakpoint_condition_p () | |
754 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
755 | return; | |
756 | ||
757 | if (!is_breakpoint (b)) | |
758 | return; | |
759 | ||
760 | for (loc = b->loc; loc; loc = loc->next) | |
761 | loc->condition_changed = condition_modified; | |
762 | } | |
763 | ||
764 | /* Mark location as "conditions have changed" in case the target supports | |
765 | evaluating conditions on its side. */ | |
766 | ||
767 | static void | |
768 | mark_breakpoint_location_modified (struct bp_location *loc) | |
769 | { | |
770 | /* This is only meaningful if the target is | |
771 | evaluating conditions and if the user has | |
772 | opted for condition evaluation on the target's | |
773 | side. */ | |
774 | if (gdb_evaluates_breakpoint_condition_p () | |
775 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
776 | ||
777 | return; | |
778 | ||
779 | if (!is_breakpoint (loc->owner)) | |
780 | return; | |
781 | ||
782 | loc->condition_changed = condition_modified; | |
783 | } | |
784 | ||
785 | /* Sets the condition-evaluation mode using the static global | |
786 | condition_evaluation_mode. */ | |
787 | ||
788 | static void | |
789 | set_condition_evaluation_mode (char *args, int from_tty, | |
790 | struct cmd_list_element *c) | |
791 | { | |
b775012e LM |
792 | const char *old_mode, *new_mode; |
793 | ||
794 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
795 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
796 | { | |
797 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
798 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
799 | "Using host evaluation mode instead.")); | |
800 | return; | |
801 | } | |
802 | ||
803 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
804 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
805 | ||
abf1152a JK |
806 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
807 | settings was "auto". */ | |
808 | condition_evaluation_mode = condition_evaluation_mode_1; | |
809 | ||
b775012e LM |
810 | /* Only update the mode if the user picked a different one. */ |
811 | if (new_mode != old_mode) | |
812 | { | |
813 | struct bp_location *loc, **loc_tmp; | |
814 | /* If the user switched to a different evaluation mode, we | |
815 | need to synch the changes with the target as follows: | |
816 | ||
817 | "host" -> "target": Send all (valid) conditions to the target. | |
818 | "target" -> "host": Remove all the conditions from the target. | |
819 | */ | |
820 | ||
b775012e LM |
821 | if (new_mode == condition_evaluation_target) |
822 | { | |
823 | /* Mark everything modified and synch conditions with the | |
824 | target. */ | |
825 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
826 | mark_breakpoint_location_modified (loc); | |
827 | } | |
828 | else | |
829 | { | |
830 | /* Manually mark non-duplicate locations to synch conditions | |
831 | with the target. We do this to remove all the conditions the | |
832 | target knows about. */ | |
833 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
834 | if (is_breakpoint (loc->owner) && loc->inserted) | |
835 | loc->needs_update = 1; | |
836 | } | |
837 | ||
838 | /* Do the update. */ | |
839 | update_global_location_list (1); | |
840 | } | |
841 | ||
842 | return; | |
843 | } | |
844 | ||
845 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
846 | what "auto" is translating to. */ | |
847 | ||
848 | static void | |
849 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
850 | struct cmd_list_element *c, const char *value) | |
851 | { | |
852 | if (condition_evaluation_mode == condition_evaluation_auto) | |
853 | fprintf_filtered (file, | |
854 | _("Breakpoint condition evaluation " | |
855 | "mode is %s (currently %s).\n"), | |
856 | value, | |
857 | breakpoint_condition_evaluation_mode ()); | |
858 | else | |
859 | fprintf_filtered (file, _("Breakpoint condition evaluation mode is %s.\n"), | |
860 | value); | |
861 | } | |
862 | ||
863 | /* A comparison function for bp_location AP and BP that is used by | |
864 | bsearch. This comparison function only cares about addresses, unlike | |
865 | the more general bp_location_compare function. */ | |
866 | ||
867 | static int | |
868 | bp_location_compare_addrs (const void *ap, const void *bp) | |
869 | { | |
870 | struct bp_location *a = *(void **) ap; | |
871 | struct bp_location *b = *(void **) bp; | |
872 | ||
873 | if (a->address == b->address) | |
874 | return 0; | |
875 | else | |
876 | return ((a->address > b->address) - (a->address < b->address)); | |
877 | } | |
878 | ||
879 | /* Helper function to skip all bp_locations with addresses | |
880 | less than ADDRESS. It returns the first bp_location that | |
881 | is greater than or equal to ADDRESS. If none is found, just | |
882 | return NULL. */ | |
883 | ||
884 | static struct bp_location ** | |
885 | get_first_locp_gte_addr (CORE_ADDR address) | |
886 | { | |
887 | struct bp_location dummy_loc; | |
888 | struct bp_location *dummy_locp = &dummy_loc; | |
889 | struct bp_location **locp_found = NULL; | |
890 | ||
891 | /* Initialize the dummy location's address field. */ | |
892 | memset (&dummy_loc, 0, sizeof (struct bp_location)); | |
893 | dummy_loc.address = address; | |
894 | ||
895 | /* Find a close match to the first location at ADDRESS. */ | |
896 | locp_found = bsearch (&dummy_locp, bp_location, bp_location_count, | |
897 | sizeof (struct bp_location **), | |
898 | bp_location_compare_addrs); | |
899 | ||
900 | /* Nothing was found, nothing left to do. */ | |
901 | if (locp_found == NULL) | |
902 | return NULL; | |
903 | ||
904 | /* We may have found a location that is at ADDRESS but is not the first in the | |
905 | location's list. Go backwards (if possible) and locate the first one. */ | |
906 | while ((locp_found - 1) >= bp_location | |
907 | && (*(locp_found - 1))->address == address) | |
908 | locp_found--; | |
909 | ||
910 | return locp_found; | |
911 | } | |
912 | ||
adc36818 PM |
913 | void |
914 | set_breakpoint_condition (struct breakpoint *b, char *exp, | |
915 | int from_tty) | |
916 | { | |
3a5c3e22 PA |
917 | xfree (b->cond_string); |
918 | b->cond_string = NULL; | |
adc36818 | 919 | |
3a5c3e22 | 920 | if (is_watchpoint (b)) |
adc36818 | 921 | { |
3a5c3e22 PA |
922 | struct watchpoint *w = (struct watchpoint *) b; |
923 | ||
924 | xfree (w->cond_exp); | |
925 | w->cond_exp = NULL; | |
926 | } | |
927 | else | |
928 | { | |
929 | struct bp_location *loc; | |
930 | ||
931 | for (loc = b->loc; loc; loc = loc->next) | |
932 | { | |
933 | xfree (loc->cond); | |
934 | loc->cond = NULL; | |
b775012e LM |
935 | |
936 | /* No need to free the condition agent expression | |
937 | bytecode (if we have one). We will handle this | |
938 | when we go through update_global_location_list. */ | |
3a5c3e22 | 939 | } |
adc36818 | 940 | } |
adc36818 PM |
941 | |
942 | if (*exp == 0) | |
943 | { | |
944 | if (from_tty) | |
945 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
946 | } | |
947 | else | |
948 | { | |
949 | char *arg = exp; | |
cc59ec59 | 950 | |
adc36818 PM |
951 | /* I don't know if it matters whether this is the string the user |
952 | typed in or the decompiled expression. */ | |
953 | b->cond_string = xstrdup (arg); | |
954 | b->condition_not_parsed = 0; | |
955 | ||
956 | if (is_watchpoint (b)) | |
957 | { | |
3a5c3e22 PA |
958 | struct watchpoint *w = (struct watchpoint *) b; |
959 | ||
adc36818 PM |
960 | innermost_block = NULL; |
961 | arg = exp; | |
1bb9788d | 962 | w->cond_exp = parse_exp_1 (&arg, 0, 0, 0); |
adc36818 PM |
963 | if (*arg) |
964 | error (_("Junk at end of expression")); | |
3a5c3e22 | 965 | w->cond_exp_valid_block = innermost_block; |
adc36818 PM |
966 | } |
967 | else | |
968 | { | |
3a5c3e22 PA |
969 | struct bp_location *loc; |
970 | ||
adc36818 PM |
971 | for (loc = b->loc; loc; loc = loc->next) |
972 | { | |
973 | arg = exp; | |
974 | loc->cond = | |
1bb9788d TT |
975 | parse_exp_1 (&arg, loc->address, |
976 | block_for_pc (loc->address), 0); | |
adc36818 PM |
977 | if (*arg) |
978 | error (_("Junk at end of expression")); | |
979 | } | |
980 | } | |
981 | } | |
b775012e LM |
982 | mark_breakpoint_modified (b); |
983 | ||
adc36818 | 984 | breakpoints_changed (); |
8d3788bd | 985 | observer_notify_breakpoint_modified (b); |
adc36818 PM |
986 | } |
987 | ||
d55637df TT |
988 | /* Completion for the "condition" command. */ |
989 | ||
990 | static VEC (char_ptr) * | |
991 | condition_completer (struct cmd_list_element *cmd, char *text, char *word) | |
992 | { | |
993 | char *space; | |
994 | ||
995 | text = skip_spaces (text); | |
996 | space = skip_to_space (text); | |
997 | if (*space == '\0') | |
998 | { | |
999 | int len; | |
1000 | struct breakpoint *b; | |
1001 | VEC (char_ptr) *result = NULL; | |
1002 | ||
1003 | if (text[0] == '$') | |
1004 | { | |
1005 | /* We don't support completion of history indices. */ | |
1006 | if (isdigit (text[1])) | |
1007 | return NULL; | |
1008 | return complete_internalvar (&text[1]); | |
1009 | } | |
1010 | ||
1011 | /* We're completing the breakpoint number. */ | |
1012 | len = strlen (text); | |
1013 | ||
1014 | ALL_BREAKPOINTS (b) | |
1015 | { | |
1016 | int single = b->loc->next == NULL; | |
1017 | struct bp_location *loc; | |
1018 | int count = 1; | |
1019 | ||
1020 | for (loc = b->loc; loc; loc = loc->next) | |
1021 | { | |
1022 | char location[50]; | |
1023 | ||
1024 | if (single) | |
1025 | sprintf (location, "%d", b->number); | |
1026 | else | |
1027 | sprintf (location, "%d.%d", b->number, count); | |
1028 | ||
1029 | if (strncmp (location, text, len) == 0) | |
1030 | VEC_safe_push (char_ptr, result, xstrdup (location)); | |
1031 | ||
1032 | ++count; | |
1033 | } | |
1034 | } | |
1035 | ||
1036 | return result; | |
1037 | } | |
1038 | ||
1039 | /* We're completing the expression part. */ | |
1040 | text = skip_spaces (space); | |
1041 | return expression_completer (cmd, text, word); | |
1042 | } | |
1043 | ||
c906108c SS |
1044 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
1045 | ||
1046 | static void | |
fba45db2 | 1047 | condition_command (char *arg, int from_tty) |
c906108c | 1048 | { |
52f0bd74 | 1049 | struct breakpoint *b; |
c906108c | 1050 | char *p; |
52f0bd74 | 1051 | int bnum; |
c906108c SS |
1052 | |
1053 | if (arg == 0) | |
e2e0b3e5 | 1054 | error_no_arg (_("breakpoint number")); |
c906108c SS |
1055 | |
1056 | p = arg; | |
1057 | bnum = get_number (&p); | |
5c44784c | 1058 | if (bnum == 0) |
8a3fe4f8 | 1059 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
1060 | |
1061 | ALL_BREAKPOINTS (b) | |
1062 | if (b->number == bnum) | |
2f069f6f | 1063 | { |
7371cf6d PM |
1064 | /* Check if this breakpoint has a Python object assigned to |
1065 | it, and if it has a definition of the "stop" | |
1066 | method. This method and conditions entered into GDB from | |
1067 | the CLI are mutually exclusive. */ | |
1068 | if (b->py_bp_object | |
1069 | && gdbpy_breakpoint_has_py_cond (b->py_bp_object)) | |
1070 | error (_("Cannot set a condition where a Python 'stop' " | |
1071 | "method has been defined in the breakpoint.")); | |
2566ad2d | 1072 | set_breakpoint_condition (b, p, from_tty); |
b775012e LM |
1073 | |
1074 | if (is_breakpoint (b)) | |
1075 | update_global_location_list (1); | |
1076 | ||
2f069f6f JB |
1077 | return; |
1078 | } | |
c906108c | 1079 | |
8a3fe4f8 | 1080 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
1081 | } |
1082 | ||
a7bdde9e VP |
1083 | /* Check that COMMAND do not contain commands that are suitable |
1084 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1085 | Throw if any such commands is found. */ |
1086 | ||
a7bdde9e VP |
1087 | static void |
1088 | check_no_tracepoint_commands (struct command_line *commands) | |
1089 | { | |
1090 | struct command_line *c; | |
cc59ec59 | 1091 | |
a7bdde9e VP |
1092 | for (c = commands; c; c = c->next) |
1093 | { | |
1094 | int i; | |
1095 | ||
1096 | if (c->control_type == while_stepping_control) | |
3e43a32a MS |
1097 | error (_("The 'while-stepping' command can " |
1098 | "only be used for tracepoints")); | |
a7bdde9e VP |
1099 | |
1100 | for (i = 0; i < c->body_count; ++i) | |
1101 | check_no_tracepoint_commands ((c->body_list)[i]); | |
1102 | ||
1103 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1104 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1105 | command directly. */ |
1106 | if (strstr (c->line, "collect ") == c->line) | |
1107 | error (_("The 'collect' command can only be used for tracepoints")); | |
1108 | ||
51661e93 VP |
1109 | if (strstr (c->line, "teval ") == c->line) |
1110 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1111 | } |
1112 | } | |
1113 | ||
d77f58be SS |
1114 | /* Encapsulate tests for different types of tracepoints. */ |
1115 | ||
d9b3f62e PA |
1116 | static int |
1117 | is_tracepoint_type (enum bptype type) | |
1118 | { | |
1119 | return (type == bp_tracepoint | |
1120 | || type == bp_fast_tracepoint | |
1121 | || type == bp_static_tracepoint); | |
1122 | } | |
1123 | ||
a7bdde9e | 1124 | int |
d77f58be | 1125 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1126 | { |
d9b3f62e | 1127 | return is_tracepoint_type (b->type); |
a7bdde9e | 1128 | } |
d9b3f62e | 1129 | |
e5dd4106 | 1130 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1131 | breakpoint. This function will throw an exception if a problem is |
1132 | found. */ | |
48cb2d85 | 1133 | |
95a42b64 TT |
1134 | static void |
1135 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1136 | struct command_line *commands) | |
48cb2d85 | 1137 | { |
d77f58be | 1138 | if (is_tracepoint (b)) |
a7bdde9e | 1139 | { |
4a64f543 MS |
1140 | /* We need to verify that each top-level element of commands is |
1141 | valid for tracepoints, that there's at most one | |
1142 | while-stepping element, and that while-stepping's body has | |
1143 | valid tracing commands excluding nested while-stepping. */ | |
a7bdde9e VP |
1144 | struct command_line *c; |
1145 | struct command_line *while_stepping = 0; | |
1146 | for (c = commands; c; c = c->next) | |
1147 | { | |
a7bdde9e VP |
1148 | if (c->control_type == while_stepping_control) |
1149 | { | |
1150 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1151 | error (_("The 'while-stepping' command " |
1152 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1153 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1154 | error (_("The 'while-stepping' command " |
1155 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1156 | |
1157 | if (while_stepping) | |
3e43a32a MS |
1158 | error (_("The 'while-stepping' command " |
1159 | "can be used only once")); | |
a7bdde9e VP |
1160 | else |
1161 | while_stepping = c; | |
1162 | } | |
1163 | } | |
1164 | if (while_stepping) | |
1165 | { | |
1166 | struct command_line *c2; | |
1167 | ||
1168 | gdb_assert (while_stepping->body_count == 1); | |
1169 | c2 = while_stepping->body_list[0]; | |
1170 | for (; c2; c2 = c2->next) | |
1171 | { | |
a7bdde9e VP |
1172 | if (c2->control_type == while_stepping_control) |
1173 | error (_("The 'while-stepping' command cannot be nested")); | |
1174 | } | |
1175 | } | |
1176 | } | |
1177 | else | |
1178 | { | |
1179 | check_no_tracepoint_commands (commands); | |
1180 | } | |
95a42b64 TT |
1181 | } |
1182 | ||
0fb4aa4b PA |
1183 | /* Return a vector of all the static tracepoints set at ADDR. The |
1184 | caller is responsible for releasing the vector. */ | |
1185 | ||
1186 | VEC(breakpoint_p) * | |
1187 | static_tracepoints_here (CORE_ADDR addr) | |
1188 | { | |
1189 | struct breakpoint *b; | |
1190 | VEC(breakpoint_p) *found = 0; | |
1191 | struct bp_location *loc; | |
1192 | ||
1193 | ALL_BREAKPOINTS (b) | |
1194 | if (b->type == bp_static_tracepoint) | |
1195 | { | |
1196 | for (loc = b->loc; loc; loc = loc->next) | |
1197 | if (loc->address == addr) | |
1198 | VEC_safe_push(breakpoint_p, found, b); | |
1199 | } | |
1200 | ||
1201 | return found; | |
1202 | } | |
1203 | ||
95a42b64 | 1204 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1205 | validate that only allowed commands are included. */ |
95a42b64 TT |
1206 | |
1207 | void | |
4a64f543 MS |
1208 | breakpoint_set_commands (struct breakpoint *b, |
1209 | struct command_line *commands) | |
95a42b64 TT |
1210 | { |
1211 | validate_commands_for_breakpoint (b, commands); | |
a7bdde9e | 1212 | |
9add0f1b TT |
1213 | decref_counted_command_line (&b->commands); |
1214 | b->commands = alloc_counted_command_line (commands); | |
48cb2d85 | 1215 | breakpoints_changed (); |
8d3788bd | 1216 | observer_notify_breakpoint_modified (b); |
48cb2d85 VP |
1217 | } |
1218 | ||
45a43567 TT |
1219 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1220 | is not the same as the "silent" that may appear in the breakpoint's | |
1221 | commands. */ | |
1222 | ||
1223 | void | |
1224 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1225 | { | |
1226 | int old_silent = b->silent; | |
1227 | ||
1228 | b->silent = silent; | |
1229 | if (old_silent != silent) | |
8d3788bd | 1230 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1231 | } |
1232 | ||
1233 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1234 | breakpoint work for any thread. */ | |
1235 | ||
1236 | void | |
1237 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1238 | { | |
1239 | int old_thread = b->thread; | |
1240 | ||
1241 | b->thread = thread; | |
1242 | if (old_thread != thread) | |
8d3788bd | 1243 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1244 | } |
1245 | ||
1246 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1247 | breakpoint work for any task. */ | |
1248 | ||
1249 | void | |
1250 | breakpoint_set_task (struct breakpoint *b, int task) | |
1251 | { | |
1252 | int old_task = b->task; | |
1253 | ||
1254 | b->task = task; | |
1255 | if (old_task != task) | |
8d3788bd | 1256 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1257 | } |
1258 | ||
95a42b64 TT |
1259 | void |
1260 | check_tracepoint_command (char *line, void *closure) | |
a7bdde9e VP |
1261 | { |
1262 | struct breakpoint *b = closure; | |
cc59ec59 | 1263 | |
a7bdde9e VP |
1264 | validate_actionline (&line, b); |
1265 | } | |
1266 | ||
95a42b64 TT |
1267 | /* A structure used to pass information through |
1268 | map_breakpoint_numbers. */ | |
1269 | ||
1270 | struct commands_info | |
1271 | { | |
1272 | /* True if the command was typed at a tty. */ | |
1273 | int from_tty; | |
86b17b60 PA |
1274 | |
1275 | /* The breakpoint range spec. */ | |
1276 | char *arg; | |
1277 | ||
95a42b64 TT |
1278 | /* Non-NULL if the body of the commands are being read from this |
1279 | already-parsed command. */ | |
1280 | struct command_line *control; | |
86b17b60 | 1281 | |
95a42b64 TT |
1282 | /* The command lines read from the user, or NULL if they have not |
1283 | yet been read. */ | |
1284 | struct counted_command_line *cmd; | |
1285 | }; | |
1286 | ||
1287 | /* A callback for map_breakpoint_numbers that sets the commands for | |
1288 | commands_command. */ | |
1289 | ||
c906108c | 1290 | static void |
95a42b64 | 1291 | do_map_commands_command (struct breakpoint *b, void *data) |
c906108c | 1292 | { |
95a42b64 | 1293 | struct commands_info *info = data; |
c906108c | 1294 | |
95a42b64 TT |
1295 | if (info->cmd == NULL) |
1296 | { | |
1297 | struct command_line *l; | |
5c44784c | 1298 | |
95a42b64 TT |
1299 | if (info->control != NULL) |
1300 | l = copy_command_lines (info->control->body_list[0]); | |
1301 | else | |
86b17b60 PA |
1302 | { |
1303 | struct cleanup *old_chain; | |
1304 | char *str; | |
c5aa993b | 1305 | |
3e43a32a MS |
1306 | str = xstrprintf (_("Type commands for breakpoint(s) " |
1307 | "%s, one per line."), | |
86b17b60 PA |
1308 | info->arg); |
1309 | ||
1310 | old_chain = make_cleanup (xfree, str); | |
1311 | ||
1312 | l = read_command_lines (str, | |
1313 | info->from_tty, 1, | |
d77f58be | 1314 | (is_tracepoint (b) |
86b17b60 PA |
1315 | ? check_tracepoint_command : 0), |
1316 | b); | |
1317 | ||
1318 | do_cleanups (old_chain); | |
1319 | } | |
a7bdde9e | 1320 | |
95a42b64 TT |
1321 | info->cmd = alloc_counted_command_line (l); |
1322 | } | |
1323 | ||
1324 | /* If a breakpoint was on the list more than once, we don't need to | |
1325 | do anything. */ | |
1326 | if (b->commands != info->cmd) | |
1327 | { | |
1328 | validate_commands_for_breakpoint (b, info->cmd->commands); | |
1329 | incref_counted_command_line (info->cmd); | |
1330 | decref_counted_command_line (&b->commands); | |
1331 | b->commands = info->cmd; | |
1332 | breakpoints_changed (); | |
8d3788bd | 1333 | observer_notify_breakpoint_modified (b); |
c5aa993b | 1334 | } |
95a42b64 TT |
1335 | } |
1336 | ||
1337 | static void | |
4a64f543 MS |
1338 | commands_command_1 (char *arg, int from_tty, |
1339 | struct command_line *control) | |
95a42b64 TT |
1340 | { |
1341 | struct cleanup *cleanups; | |
1342 | struct commands_info info; | |
1343 | ||
1344 | info.from_tty = from_tty; | |
1345 | info.control = control; | |
1346 | info.cmd = NULL; | |
1347 | /* If we read command lines from the user, then `info' will hold an | |
1348 | extra reference to the commands that we must clean up. */ | |
1349 | cleanups = make_cleanup_decref_counted_command_line (&info.cmd); | |
1350 | ||
1351 | if (arg == NULL || !*arg) | |
1352 | { | |
86b17b60 | 1353 | if (breakpoint_count - prev_breakpoint_count > 1) |
4a64f543 MS |
1354 | arg = xstrprintf ("%d-%d", prev_breakpoint_count + 1, |
1355 | breakpoint_count); | |
95a42b64 TT |
1356 | else if (breakpoint_count > 0) |
1357 | arg = xstrprintf ("%d", breakpoint_count); | |
86b17b60 PA |
1358 | else |
1359 | { | |
1360 | /* So that we don't try to free the incoming non-NULL | |
1361 | argument in the cleanup below. Mapping breakpoint | |
1362 | numbers will fail in this case. */ | |
1363 | arg = NULL; | |
1364 | } | |
95a42b64 | 1365 | } |
9766ced4 SS |
1366 | else |
1367 | /* The command loop has some static state, so we need to preserve | |
1368 | our argument. */ | |
1369 | arg = xstrdup (arg); | |
86b17b60 PA |
1370 | |
1371 | if (arg != NULL) | |
1372 | make_cleanup (xfree, arg); | |
1373 | ||
1374 | info.arg = arg; | |
95a42b64 TT |
1375 | |
1376 | map_breakpoint_numbers (arg, do_map_commands_command, &info); | |
1377 | ||
1378 | if (info.cmd == NULL) | |
1379 | error (_("No breakpoints specified.")); | |
1380 | ||
1381 | do_cleanups (cleanups); | |
1382 | } | |
1383 | ||
1384 | static void | |
1385 | commands_command (char *arg, int from_tty) | |
1386 | { | |
1387 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1388 | } |
40c03ae8 EZ |
1389 | |
1390 | /* Like commands_command, but instead of reading the commands from | |
1391 | input stream, takes them from an already parsed command structure. | |
1392 | ||
1393 | This is used by cli-script.c to DTRT with breakpoint commands | |
1394 | that are part of if and while bodies. */ | |
1395 | enum command_control_type | |
1396 | commands_from_control_command (char *arg, struct command_line *cmd) | |
1397 | { | |
95a42b64 TT |
1398 | commands_command_1 (arg, 0, cmd); |
1399 | return simple_control; | |
40c03ae8 | 1400 | } |
876fa593 JK |
1401 | |
1402 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1403 | ||
1404 | static int | |
1405 | bp_location_has_shadow (struct bp_location *bl) | |
1406 | { | |
1407 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1408 | return 0; | |
1409 | if (!bl->inserted) | |
1410 | return 0; | |
1411 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1412 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1413 | return 0; |
1414 | return 1; | |
1415 | } | |
1416 | ||
8defab1a | 1417 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1418 | by replacing any memory breakpoints with their shadowed contents. |
1419 | ||
35c63cd8 JB |
1420 | If READBUF is not NULL, this buffer must not overlap with any of |
1421 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1422 | a failed assertion internal error will be raised. | |
1423 | ||
876fa593 | 1424 | The range of shadowed area by each bp_location is: |
35df4500 TJB |
1425 | bl->address - bp_location_placed_address_before_address_max |
1426 | up to bl->address + bp_location_shadow_len_after_address_max | |
876fa593 JK |
1427 | The range we were requested to resolve shadows for is: |
1428 | memaddr ... memaddr + len | |
1429 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 TJB |
1430 | memaddr + len <= (bl->address |
1431 | - bp_location_placed_address_before_address_max) | |
876fa593 | 1432 | and: |
35df4500 | 1433 | bl->address + bp_location_shadow_len_after_address_max <= memaddr */ |
c906108c | 1434 | |
8defab1a | 1435 | void |
f0ba3972 PA |
1436 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1437 | const gdb_byte *writebuf_org, | |
1438 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1439 | { |
4a64f543 MS |
1440 | /* Left boundary, right boundary and median element of our binary |
1441 | search. */ | |
876fa593 JK |
1442 | unsigned bc_l, bc_r, bc; |
1443 | ||
4a64f543 MS |
1444 | /* Find BC_L which is a leftmost element which may affect BUF |
1445 | content. It is safe to report lower value but a failure to | |
1446 | report higher one. */ | |
876fa593 JK |
1447 | |
1448 | bc_l = 0; | |
1449 | bc_r = bp_location_count; | |
1450 | while (bc_l + 1 < bc_r) | |
1451 | { | |
35df4500 | 1452 | struct bp_location *bl; |
876fa593 JK |
1453 | |
1454 | bc = (bc_l + bc_r) / 2; | |
35df4500 | 1455 | bl = bp_location[bc]; |
876fa593 | 1456 | |
4a64f543 MS |
1457 | /* Check first BL->ADDRESS will not overflow due to the added |
1458 | constant. Then advance the left boundary only if we are sure | |
1459 | the BC element can in no way affect the BUF content (MEMADDR | |
1460 | to MEMADDR + LEN range). | |
876fa593 | 1461 | |
4a64f543 MS |
1462 | Use the BP_LOCATION_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
1463 | offset so that we cannot miss a breakpoint with its shadow | |
1464 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1465 | |
35df4500 TJB |
1466 | if ((bl->address + bp_location_shadow_len_after_address_max |
1467 | >= bl->address) | |
1468 | && (bl->address + bp_location_shadow_len_after_address_max | |
1469 | <= memaddr)) | |
876fa593 JK |
1470 | bc_l = bc; |
1471 | else | |
1472 | bc_r = bc; | |
1473 | } | |
1474 | ||
128070bb PA |
1475 | /* Due to the binary search above, we need to make sure we pick the |
1476 | first location that's at BC_L's address. E.g., if there are | |
1477 | multiple locations at the same address, BC_L may end up pointing | |
1478 | at a duplicate location, and miss the "master"/"inserted" | |
1479 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1480 | B: | |
1481 | ||
1482 | L1@A, L2@A, L3@B, ... | |
1483 | ||
1484 | BC_L could end up pointing at location L2, while the "master" | |
1485 | location could be L1. Since the `loc->inserted' flag is only set | |
1486 | on "master" locations, we'd forget to restore the shadow of L1 | |
1487 | and L2. */ | |
1488 | while (bc_l > 0 | |
1489 | && bp_location[bc_l]->address == bp_location[bc_l - 1]->address) | |
1490 | bc_l--; | |
1491 | ||
876fa593 JK |
1492 | /* Now do full processing of the found relevant range of elements. */ |
1493 | ||
1494 | for (bc = bc_l; bc < bp_location_count; bc++) | |
c5aa993b | 1495 | { |
35df4500 | 1496 | struct bp_location *bl = bp_location[bc]; |
876fa593 JK |
1497 | CORE_ADDR bp_addr = 0; |
1498 | int bp_size = 0; | |
1499 | int bptoffset = 0; | |
1500 | ||
35df4500 TJB |
1501 | /* bp_location array has BL->OWNER always non-NULL. */ |
1502 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1503 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1504 | bl->owner->number); |
ffce0d52 | 1505 | |
e5dd4106 | 1506 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1507 | content. */ |
1508 | ||
35df4500 TJB |
1509 | if (bl->address >= bp_location_placed_address_before_address_max |
1510 | && memaddr + len <= (bl->address | |
1511 | - bp_location_placed_address_before_address_max)) | |
876fa593 JK |
1512 | break; |
1513 | ||
35df4500 | 1514 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1515 | continue; |
35df4500 | 1516 | if (!breakpoint_address_match (bl->target_info.placed_address_space, 0, |
6c95b8df PA |
1517 | current_program_space->aspace, 0)) |
1518 | continue; | |
1519 | ||
c5aa993b JM |
1520 | /* Addresses and length of the part of the breakpoint that |
1521 | we need to copy. */ | |
35df4500 TJB |
1522 | bp_addr = bl->target_info.placed_address; |
1523 | bp_size = bl->target_info.shadow_len; | |
8defab1a | 1524 | |
c5aa993b JM |
1525 | if (bp_addr + bp_size <= memaddr) |
1526 | /* The breakpoint is entirely before the chunk of memory we | |
1527 | are reading. */ | |
1528 | continue; | |
8defab1a | 1529 | |
c5aa993b JM |
1530 | if (bp_addr >= memaddr + len) |
1531 | /* The breakpoint is entirely after the chunk of memory we are | |
4a64f543 | 1532 | reading. */ |
c5aa993b | 1533 | continue; |
c5aa993b | 1534 | |
8defab1a DJ |
1535 | /* Offset within shadow_contents. */ |
1536 | if (bp_addr < memaddr) | |
1537 | { | |
1538 | /* Only copy the second part of the breakpoint. */ | |
1539 | bp_size -= memaddr - bp_addr; | |
1540 | bptoffset = memaddr - bp_addr; | |
1541 | bp_addr = memaddr; | |
1542 | } | |
c5aa993b | 1543 | |
8defab1a DJ |
1544 | if (bp_addr + bp_size > memaddr + len) |
1545 | { | |
1546 | /* Only copy the first part of the breakpoint. */ | |
1547 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1548 | } | |
c5aa993b | 1549 | |
f0ba3972 PA |
1550 | if (readbuf != NULL) |
1551 | { | |
35c63cd8 JB |
1552 | /* Verify that the readbuf buffer does not overlap with |
1553 | the shadow_contents buffer. */ | |
1554 | gdb_assert (bl->target_info.shadow_contents >= readbuf + len | |
1555 | || readbuf >= (bl->target_info.shadow_contents | |
1556 | + bl->target_info.shadow_len)); | |
1557 | ||
f0ba3972 PA |
1558 | /* Update the read buffer with this inserted breakpoint's |
1559 | shadow. */ | |
1560 | memcpy (readbuf + bp_addr - memaddr, | |
1561 | bl->target_info.shadow_contents + bptoffset, bp_size); | |
1562 | } | |
1563 | else | |
1564 | { | |
1565 | struct gdbarch *gdbarch = bl->gdbarch; | |
1566 | const unsigned char *bp; | |
1567 | CORE_ADDR placed_address = bl->target_info.placed_address; | |
1568 | unsigned placed_size = bl->target_info.placed_size; | |
1569 | ||
1570 | /* Update the shadow with what we want to write to memory. */ | |
1571 | memcpy (bl->target_info.shadow_contents + bptoffset, | |
1572 | writebuf_org + bp_addr - memaddr, bp_size); | |
1573 | ||
1574 | /* Determine appropriate breakpoint contents and size for this | |
1575 | address. */ | |
1576 | bp = gdbarch_breakpoint_from_pc (gdbarch, &placed_address, &placed_size); | |
1577 | ||
1578 | /* Update the final write buffer with this inserted | |
1579 | breakpoint's INSN. */ | |
1580 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1581 | } | |
c5aa993b | 1582 | } |
c906108c | 1583 | } |
c906108c | 1584 | \f |
c5aa993b | 1585 | |
b775012e LM |
1586 | /* Return true if BPT is either a software breakpoint or a hardware |
1587 | breakpoint. */ | |
1588 | ||
1589 | int | |
1590 | is_breakpoint (const struct breakpoint *bpt) | |
1591 | { | |
1592 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1593 | || bpt->type == bp_hardware_breakpoint |
1594 | || bpt->type == bp_dprintf); | |
b775012e LM |
1595 | } |
1596 | ||
60e1c644 PA |
1597 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1598 | ||
a5606eee | 1599 | static int |
d77f58be | 1600 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1601 | { |
1602 | return (bpt->type == bp_hardware_watchpoint | |
1603 | || bpt->type == bp_read_watchpoint | |
1604 | || bpt->type == bp_access_watchpoint); | |
1605 | } | |
7270d8f2 | 1606 | |
60e1c644 PA |
1607 | /* Return true if BPT is of any watchpoint kind, hardware or |
1608 | software. */ | |
1609 | ||
3a5c3e22 | 1610 | int |
d77f58be | 1611 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1612 | { |
1613 | return (is_hardware_watchpoint (bpt) | |
1614 | || bpt->type == bp_watchpoint); | |
1615 | } | |
1616 | ||
3a5c3e22 PA |
1617 | /* Returns true if the current thread and its running state are safe |
1618 | to evaluate or update watchpoint B. Watchpoints on local | |
1619 | expressions need to be evaluated in the context of the thread that | |
1620 | was current when the watchpoint was created, and, that thread needs | |
1621 | to be stopped to be able to select the correct frame context. | |
1622 | Watchpoints on global expressions can be evaluated on any thread, | |
1623 | and in any state. It is presently left to the target allowing | |
1624 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1625 | |
1626 | static int | |
3a5c3e22 | 1627 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1628 | { |
d0d8b0c6 JK |
1629 | return (b->base.pspace == current_program_space |
1630 | && (ptid_equal (b->watchpoint_thread, null_ptid) | |
1631 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1632 | && !is_executing (inferior_ptid)))); | |
f6bc2008 PA |
1633 | } |
1634 | ||
d0fb5eae JK |
1635 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1636 | associated bp_watchpoint_scope breakpoint. */ | |
1637 | ||
1638 | static void | |
3a5c3e22 | 1639 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1640 | { |
3a5c3e22 | 1641 | struct breakpoint *b = &w->base; |
d0fb5eae JK |
1642 | |
1643 | if (b->related_breakpoint != b) | |
1644 | { | |
1645 | gdb_assert (b->related_breakpoint->type == bp_watchpoint_scope); | |
1646 | gdb_assert (b->related_breakpoint->related_breakpoint == b); | |
1647 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1648 | b->related_breakpoint->related_breakpoint = b->related_breakpoint; | |
1649 | b->related_breakpoint = b; | |
1650 | } | |
1651 | b->disposition = disp_del_at_next_stop; | |
1652 | } | |
1653 | ||
567e1b4e JB |
1654 | /* Assuming that B is a watchpoint: |
1655 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1656 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1657 | - Evaluate the condition if there is one, and store the result |
1658 | in b->loc->cond. | |
a5606eee VP |
1659 | - Update the list of values that must be watched in B->loc. |
1660 | ||
4a64f543 MS |
1661 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1662 | nothing. If this is local watchpoint that is out of scope, delete | |
1663 | it. | |
1664 | ||
1665 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1666 | removed + inserted on each stop here. Normal breakpoints must | |
1667 | never be removed because they might be missed by a running thread | |
1668 | when debugging in non-stop mode. On the other hand, hardware | |
1669 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1670 | to each LWP since they are stored in each LWP's hardware debug | |
1671 | registers. Therefore, such LWP must be stopped first in order to | |
1672 | be able to modify its hardware watchpoints. | |
1673 | ||
1674 | Hardware watchpoints must be reset exactly once after being | |
1675 | presented to the user. It cannot be done sooner, because it would | |
1676 | reset the data used to present the watchpoint hit to the user. And | |
1677 | it must not be done later because it could display the same single | |
1678 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1679 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1680 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1681 | not user-visible - its hit is suppressed if the memory content has | |
1682 | not changed. | |
1683 | ||
1684 | The following constraints influence the location where we can reset | |
1685 | hardware watchpoints: | |
1686 | ||
1687 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1688 | called several times when GDB stops. | |
1689 | ||
1690 | [linux] | |
1691 | * Multiple hardware watchpoints can be hit at the same time, | |
1692 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1693 | hit at a time as the reason for stopping, and all the other hits | |
1694 | are presented later, one after the other, each time the user | |
1695 | requests the execution to be resumed. Execution is not resumed | |
1696 | for the threads still having pending hit event stored in | |
1697 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1698 | the inferior on the first stop the thread hit event is kept being | |
1699 | reported from its cached value by linux_nat_stopped_data_address | |
1700 | until the real thread resume happens after the watchpoint gets | |
1701 | presented and thus its LWP_INFO->STATUS gets reset. | |
1702 | ||
1703 | Therefore the hardware watchpoint hit can get safely reset on the | |
1704 | watchpoint removal from inferior. */ | |
a79d3c27 | 1705 | |
b40ce68a | 1706 | static void |
3a5c3e22 | 1707 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1708 | { |
a5606eee | 1709 | int within_current_scope; |
a5606eee | 1710 | struct frame_id saved_frame_id; |
66076460 | 1711 | int frame_saved; |
a5606eee | 1712 | |
f6bc2008 PA |
1713 | /* If this is a local watchpoint, we only want to check if the |
1714 | watchpoint frame is in scope if the current thread is the thread | |
1715 | that was used to create the watchpoint. */ | |
1716 | if (!watchpoint_in_thread_scope (b)) | |
1717 | return; | |
1718 | ||
3a5c3e22 | 1719 | if (b->base.disposition == disp_del_at_next_stop) |
a5606eee VP |
1720 | return; |
1721 | ||
66076460 | 1722 | frame_saved = 0; |
a5606eee VP |
1723 | |
1724 | /* Determine if the watchpoint is within scope. */ | |
1725 | if (b->exp_valid_block == NULL) | |
1726 | within_current_scope = 1; | |
1727 | else | |
1728 | { | |
b5db5dfc UW |
1729 | struct frame_info *fi = get_current_frame (); |
1730 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1731 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1732 | ||
1733 | /* If we're in a function epilogue, unwinding may not work | |
1734 | properly, so do not attempt to recreate locations at this | |
1735 | point. See similar comments in watchpoint_check. */ | |
1736 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) | |
1737 | return; | |
66076460 DJ |
1738 | |
1739 | /* Save the current frame's ID so we can restore it after | |
1740 | evaluating the watchpoint expression on its own frame. */ | |
1741 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1742 | took a frame parameter, so that we didn't have to change the | |
1743 | selected frame. */ | |
1744 | frame_saved = 1; | |
1745 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1746 | ||
a5606eee VP |
1747 | fi = frame_find_by_id (b->watchpoint_frame); |
1748 | within_current_scope = (fi != NULL); | |
1749 | if (within_current_scope) | |
1750 | select_frame (fi); | |
1751 | } | |
1752 | ||
b5db5dfc UW |
1753 | /* We don't free locations. They are stored in the bp_location array |
1754 | and update_global_location_list will eventually delete them and | |
1755 | remove breakpoints if needed. */ | |
3a5c3e22 | 1756 | b->base.loc = NULL; |
b5db5dfc | 1757 | |
a5606eee VP |
1758 | if (within_current_scope && reparse) |
1759 | { | |
1760 | char *s; | |
d63d0675 | 1761 | |
a5606eee VP |
1762 | if (b->exp) |
1763 | { | |
1764 | xfree (b->exp); | |
1765 | b->exp = NULL; | |
1766 | } | |
d63d0675 | 1767 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
1bb9788d | 1768 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1769 | /* If the meaning of expression itself changed, the old value is |
1770 | no longer relevant. We don't want to report a watchpoint hit | |
1771 | to the user when the old value and the new value may actually | |
1772 | be completely different objects. */ | |
1773 | value_free (b->val); | |
fa4727a6 DJ |
1774 | b->val = NULL; |
1775 | b->val_valid = 0; | |
60e1c644 PA |
1776 | |
1777 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1778 | expression is stored in the breakpoint object, not in the | |
1779 | locations (re)created below. */ | |
3a5c3e22 | 1780 | if (b->base.cond_string != NULL) |
60e1c644 PA |
1781 | { |
1782 | if (b->cond_exp != NULL) | |
1783 | { | |
1784 | xfree (b->cond_exp); | |
1785 | b->cond_exp = NULL; | |
1786 | } | |
1787 | ||
3a5c3e22 | 1788 | s = b->base.cond_string; |
1bb9788d | 1789 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 1790 | } |
a5606eee | 1791 | } |
a5606eee VP |
1792 | |
1793 | /* If we failed to parse the expression, for example because | |
1794 | it refers to a global variable in a not-yet-loaded shared library, | |
1795 | don't try to insert watchpoint. We don't automatically delete | |
1796 | such watchpoint, though, since failure to parse expression | |
1797 | is different from out-of-scope watchpoint. */ | |
2d134ed3 PA |
1798 | if ( !target_has_execution) |
1799 | { | |
1800 | /* Without execution, memory can't change. No use to try and | |
1801 | set watchpoint locations. The watchpoint will be reset when | |
1802 | the target gains execution, through breakpoint_re_set. */ | |
1803 | } | |
1804 | else if (within_current_scope && b->exp) | |
a5606eee | 1805 | { |
0cf6dd15 | 1806 | int pc = 0; |
fa4727a6 | 1807 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1808 | struct program_space *frame_pspace; |
a5606eee | 1809 | |
0cf6dd15 | 1810 | fetch_subexp_value (b->exp, &pc, &v, &result, &val_chain); |
a5606eee | 1811 | |
a5606eee VP |
1812 | /* Avoid setting b->val if it's already set. The meaning of |
1813 | b->val is 'the last value' user saw, and we should update | |
1814 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1815 | happens, the code that reports it updates b->val directly. |
1816 | We don't keep track of the memory value for masked | |
1817 | watchpoints. */ | |
3a5c3e22 | 1818 | if (!b->val_valid && !is_masked_watchpoint (&b->base)) |
fa4727a6 DJ |
1819 | { |
1820 | b->val = v; | |
1821 | b->val_valid = 1; | |
1822 | } | |
a5606eee | 1823 | |
2d134ed3 PA |
1824 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1825 | ||
a5606eee | 1826 | /* Look at each value on the value chain. */ |
9fa40276 | 1827 | for (v = val_chain; v; v = value_next (v)) |
a5606eee VP |
1828 | { |
1829 | /* If it's a memory location, and GDB actually needed | |
1830 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1831 | must watch it. If the first value returned is |
1832 | still lazy, that means an error occurred reading it; | |
1833 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1834 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1835 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1836 | { |
1837 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1838 | |
a5606eee VP |
1839 | /* We only watch structs and arrays if user asked |
1840 | for it explicitly, never if they just happen to | |
1841 | appear in the middle of some value chain. */ | |
fa4727a6 | 1842 | if (v == result |
a5606eee VP |
1843 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1844 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1845 | { | |
1846 | CORE_ADDR addr; | |
1847 | int len, type; | |
1848 | struct bp_location *loc, **tmp; | |
1849 | ||
42ae5230 | 1850 | addr = value_address (v); |
a5606eee VP |
1851 | len = TYPE_LENGTH (value_type (v)); |
1852 | type = hw_write; | |
3a5c3e22 | 1853 | if (b->base.type == bp_read_watchpoint) |
a5606eee | 1854 | type = hw_read; |
3a5c3e22 | 1855 | else if (b->base.type == bp_access_watchpoint) |
a5606eee | 1856 | type = hw_access; |
3a5c3e22 PA |
1857 | |
1858 | loc = allocate_bp_location (&b->base); | |
1859 | for (tmp = &(b->base.loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
1860 | ; |
1861 | *tmp = loc; | |
a6d9a66e | 1862 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1863 | |
1864 | loc->pspace = frame_pspace; | |
a5606eee VP |
1865 | loc->address = addr; |
1866 | loc->length = len; | |
1867 | loc->watchpoint_type = type; | |
1868 | } | |
1869 | } | |
9fa40276 TJB |
1870 | } |
1871 | ||
1872 | /* Change the type of breakpoint between hardware assisted or | |
1873 | an ordinary watchpoint depending on the hardware support | |
1874 | and free hardware slots. REPARSE is set when the inferior | |
1875 | is started. */ | |
a9634178 | 1876 | if (reparse) |
9fa40276 | 1877 | { |
e09342b5 | 1878 | int reg_cnt; |
9fa40276 TJB |
1879 | enum bp_loc_type loc_type; |
1880 | struct bp_location *bl; | |
a5606eee | 1881 | |
a9634178 | 1882 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
1883 | |
1884 | if (reg_cnt) | |
9fa40276 TJB |
1885 | { |
1886 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 1887 | enum bptype type; |
9fa40276 | 1888 | |
a9634178 TJB |
1889 | /* Use an exact watchpoint when there's only one memory region to be |
1890 | watched, and only one debug register is needed to watch it. */ | |
1891 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
1892 | ||
9fa40276 | 1893 | /* We need to determine how many resources are already |
e09342b5 TJB |
1894 | used for all other hardware watchpoints plus this one |
1895 | to see if we still have enough resources to also fit | |
a1398e0c PA |
1896 | this watchpoint in as well. */ |
1897 | ||
1898 | /* If this is a software watchpoint, we try to turn it | |
1899 | to a hardware one -- count resources as if B was of | |
1900 | hardware watchpoint type. */ | |
1901 | type = b->base.type; | |
1902 | if (type == bp_watchpoint) | |
1903 | type = bp_hardware_watchpoint; | |
1904 | ||
1905 | /* This watchpoint may or may not have been placed on | |
1906 | the list yet at this point (it won't be in the list | |
1907 | if we're trying to create it for the first time, | |
1908 | through watch_command), so always account for it | |
1909 | manually. */ | |
1910 | ||
1911 | /* Count resources used by all watchpoints except B. */ | |
1912 | i = hw_watchpoint_used_count_others (&b->base, type, &other_type_used); | |
1913 | ||
1914 | /* Add in the resources needed for B. */ | |
1915 | i += hw_watchpoint_use_count (&b->base); | |
1916 | ||
1917 | target_resources_ok | |
1918 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 1919 | if (target_resources_ok <= 0) |
a9634178 | 1920 | { |
3a5c3e22 | 1921 | int sw_mode = b->base.ops->works_in_software_mode (&b->base); |
9c06b0b4 TJB |
1922 | |
1923 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
1924 | error (_("Target does not support this type of " |
1925 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
1926 | else if (target_resources_ok < 0 && !sw_mode) |
1927 | error (_("There are not enough available hardware " | |
1928 | "resources for this watchpoint.")); | |
a1398e0c PA |
1929 | |
1930 | /* Downgrade to software watchpoint. */ | |
1931 | b->base.type = bp_watchpoint; | |
1932 | } | |
1933 | else | |
1934 | { | |
1935 | /* If this was a software watchpoint, we've just | |
1936 | found we have enough resources to turn it to a | |
1937 | hardware watchpoint. Otherwise, this is a | |
1938 | nop. */ | |
1939 | b->base.type = type; | |
a9634178 | 1940 | } |
9fa40276 | 1941 | } |
3a5c3e22 | 1942 | else if (!b->base.ops->works_in_software_mode (&b->base)) |
a9634178 TJB |
1943 | error (_("Expression cannot be implemented with " |
1944 | "read/access watchpoint.")); | |
9fa40276 | 1945 | else |
3a5c3e22 | 1946 | b->base.type = bp_watchpoint; |
9fa40276 | 1947 | |
3a5c3e22 | 1948 | loc_type = (b->base.type == bp_watchpoint? bp_loc_other |
9fa40276 | 1949 | : bp_loc_hardware_watchpoint); |
3a5c3e22 | 1950 | for (bl = b->base.loc; bl; bl = bl->next) |
9fa40276 TJB |
1951 | bl->loc_type = loc_type; |
1952 | } | |
1953 | ||
1954 | for (v = val_chain; v; v = next) | |
1955 | { | |
a5606eee VP |
1956 | next = value_next (v); |
1957 | if (v != b->val) | |
1958 | value_free (v); | |
1959 | } | |
1960 | ||
c7437ca6 PA |
1961 | /* If a software watchpoint is not watching any memory, then the |
1962 | above left it without any location set up. But, | |
1963 | bpstat_stop_status requires a location to be able to report | |
1964 | stops, so make sure there's at least a dummy one. */ | |
3a5c3e22 | 1965 | if (b->base.type == bp_watchpoint && b->base.loc == NULL) |
c7437ca6 | 1966 | { |
3a5c3e22 PA |
1967 | struct breakpoint *base = &b->base; |
1968 | base->loc = allocate_bp_location (base); | |
1969 | base->loc->pspace = frame_pspace; | |
1970 | base->loc->address = -1; | |
1971 | base->loc->length = -1; | |
1972 | base->loc->watchpoint_type = -1; | |
c7437ca6 | 1973 | } |
a5606eee VP |
1974 | } |
1975 | else if (!within_current_scope) | |
7270d8f2 | 1976 | { |
ac74f770 MS |
1977 | printf_filtered (_("\ |
1978 | Watchpoint %d deleted because the program has left the block\n\ | |
1979 | in which its expression is valid.\n"), | |
3a5c3e22 | 1980 | b->base.number); |
d0fb5eae | 1981 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 1982 | } |
a5606eee VP |
1983 | |
1984 | /* Restore the selected frame. */ | |
66076460 DJ |
1985 | if (frame_saved) |
1986 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1987 | } |
1988 | ||
a5606eee | 1989 | |
74960c60 | 1990 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
1991 | inserted in the inferior. We don't differentiate the type of BL's owner |
1992 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
1993 | breakpoint_ops is not defined, because in insert_bp_location, | |
1994 | tracepoint's insert_location will not be called. */ | |
74960c60 | 1995 | static int |
35df4500 | 1996 | should_be_inserted (struct bp_location *bl) |
74960c60 | 1997 | { |
35df4500 | 1998 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
1999 | return 0; |
2000 | ||
35df4500 | 2001 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
2002 | return 0; |
2003 | ||
35df4500 | 2004 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
2005 | return 0; |
2006 | ||
f8eba3c6 TT |
2007 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
2008 | return 0; | |
2009 | ||
56710373 PA |
2010 | /* This is set for example, when we're attached to the parent of a |
2011 | vfork, and have detached from the child. The child is running | |
2012 | free, and we expect it to do an exec or exit, at which point the | |
2013 | OS makes the parent schedulable again (and the target reports | |
2014 | that the vfork is done). Until the child is done with the shared | |
2015 | memory region, do not insert breakpoints in the parent, otherwise | |
2016 | the child could still trip on the parent's breakpoints. Since | |
2017 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2018 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2019 | return 0; |
2020 | ||
74960c60 VP |
2021 | return 1; |
2022 | } | |
2023 | ||
934709f0 PW |
2024 | /* Same as should_be_inserted but does the check assuming |
2025 | that the location is not duplicated. */ | |
2026 | ||
2027 | static int | |
2028 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2029 | { | |
2030 | int result; | |
2031 | const int save_duplicate = bl->duplicate; | |
2032 | ||
2033 | bl->duplicate = 0; | |
2034 | result = should_be_inserted (bl); | |
2035 | bl->duplicate = save_duplicate; | |
2036 | return result; | |
2037 | } | |
2038 | ||
b775012e LM |
2039 | /* Parses a conditional described by an expression COND into an |
2040 | agent expression bytecode suitable for evaluation | |
2041 | by the bytecode interpreter. Return NULL if there was | |
2042 | any error during parsing. */ | |
2043 | ||
2044 | static struct agent_expr * | |
2045 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) | |
2046 | { | |
2047 | struct agent_expr *aexpr = NULL; | |
2048 | struct cleanup *old_chain = NULL; | |
2049 | volatile struct gdb_exception ex; | |
2050 | ||
2051 | if (!cond) | |
2052 | return NULL; | |
2053 | ||
2054 | /* We don't want to stop processing, so catch any errors | |
2055 | that may show up. */ | |
2056 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
2057 | { | |
2058 | aexpr = gen_eval_for_expr (scope, cond); | |
2059 | } | |
2060 | ||
2061 | if (ex.reason < 0) | |
2062 | { | |
2063 | /* If we got here, it means the condition could not be parsed to a valid | |
2064 | bytecode expression and thus can't be evaluated on the target's side. | |
2065 | It's no use iterating through the conditions. */ | |
2066 | return NULL; | |
2067 | } | |
2068 | ||
2069 | /* We have a valid agent expression. */ | |
2070 | return aexpr; | |
2071 | } | |
2072 | ||
2073 | /* Based on location BL, create a list of breakpoint conditions to be | |
2074 | passed on to the target. If we have duplicated locations with different | |
2075 | conditions, we will add such conditions to the list. The idea is that the | |
2076 | target will evaluate the list of conditions and will only notify GDB when | |
2077 | one of them is true. */ | |
2078 | ||
2079 | static void | |
2080 | build_target_condition_list (struct bp_location *bl) | |
2081 | { | |
2082 | struct bp_location **locp = NULL, **loc2p; | |
2083 | int null_condition_or_parse_error = 0; | |
2084 | int modified = bl->needs_update; | |
2085 | struct bp_location *loc; | |
2086 | ||
2087 | /* This is only meaningful if the target is | |
2088 | evaluating conditions and if the user has | |
2089 | opted for condition evaluation on the target's | |
2090 | side. */ | |
2091 | if (gdb_evaluates_breakpoint_condition_p () | |
2092 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2093 | return; | |
2094 | ||
2095 | /* Do a first pass to check for locations with no assigned | |
2096 | conditions or conditions that fail to parse to a valid agent expression | |
2097 | bytecode. If any of these happen, then it's no use to send conditions | |
2098 | to the target since this location will always trigger and generate a | |
2099 | response back to GDB. */ | |
2100 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2101 | { | |
2102 | loc = (*loc2p); | |
2103 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2104 | { | |
2105 | if (modified) | |
2106 | { | |
2107 | struct agent_expr *aexpr; | |
2108 | ||
2109 | /* Re-parse the conditions since something changed. In that | |
2110 | case we already freed the condition bytecodes (see | |
2111 | force_breakpoint_reinsertion). We just | |
2112 | need to parse the condition to bytecodes again. */ | |
2113 | aexpr = parse_cond_to_aexpr (bl->address, loc->cond); | |
2114 | loc->cond_bytecode = aexpr; | |
2115 | ||
2116 | /* Check if we managed to parse the conditional expression | |
2117 | correctly. If not, we will not send this condition | |
2118 | to the target. */ | |
2119 | if (aexpr) | |
2120 | continue; | |
2121 | } | |
2122 | ||
2123 | /* If we have a NULL bytecode expression, it means something | |
2124 | went wrong or we have a null condition expression. */ | |
2125 | if (!loc->cond_bytecode) | |
2126 | { | |
2127 | null_condition_or_parse_error = 1; | |
2128 | break; | |
2129 | } | |
2130 | } | |
2131 | } | |
2132 | ||
2133 | /* If any of these happened, it means we will have to evaluate the conditions | |
2134 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2135 | for all the other duplicate locations, thus we free all of them here. | |
2136 | ||
2137 | This is so we have a finer control over which locations' conditions are | |
2138 | being evaluated by GDB or the remote stub. */ | |
2139 | if (null_condition_or_parse_error) | |
2140 | { | |
2141 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2142 | { | |
2143 | loc = (*loc2p); | |
2144 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2145 | { | |
2146 | /* Only go as far as the first NULL bytecode is | |
2147 | located. */ | |
2148 | if (!loc->cond_bytecode) | |
2149 | return; | |
2150 | ||
2151 | free_agent_expr (loc->cond_bytecode); | |
2152 | loc->cond_bytecode = NULL; | |
2153 | } | |
2154 | } | |
2155 | } | |
2156 | ||
2157 | /* No NULL conditions or failed bytecode generation. Build a condition list | |
2158 | for this location's address. */ | |
2159 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2160 | { | |
2161 | loc = (*loc2p); | |
2162 | if (loc->cond | |
2163 | && is_breakpoint (loc->owner) | |
2164 | && loc->pspace->num == bl->pspace->num | |
2165 | && loc->owner->enable_state == bp_enabled | |
2166 | && loc->enabled) | |
2167 | /* Add the condition to the vector. This will be used later to send the | |
2168 | conditions to the target. */ | |
2169 | VEC_safe_push (agent_expr_p, bl->target_info.conditions, | |
2170 | loc->cond_bytecode); | |
2171 | } | |
2172 | ||
2173 | return; | |
2174 | } | |
2175 | ||
d3ce09f5 SS |
2176 | /* Parses a command described by string CMD into an agent expression |
2177 | bytecode suitable for evaluation by the bytecode interpreter. | |
2178 | Return NULL if there was any error during parsing. */ | |
2179 | ||
2180 | static struct agent_expr * | |
2181 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) | |
2182 | { | |
2183 | struct cleanup *old_cleanups = 0; | |
2184 | struct expression *expr, **argvec; | |
2185 | struct agent_expr *aexpr = NULL; | |
2186 | struct cleanup *old_chain = NULL; | |
2187 | volatile struct gdb_exception ex; | |
2188 | char *cmdrest; | |
2189 | char *format_start, *format_end; | |
2190 | struct format_piece *fpieces; | |
2191 | int nargs; | |
2192 | struct gdbarch *gdbarch = get_current_arch (); | |
2193 | ||
2194 | if (!cmd) | |
2195 | return NULL; | |
2196 | ||
2197 | cmdrest = cmd; | |
2198 | ||
2199 | if (*cmdrest == ',') | |
2200 | ++cmdrest; | |
2201 | cmdrest = skip_spaces (cmdrest); | |
2202 | ||
2203 | if (*cmdrest++ != '"') | |
2204 | error (_("No format string following the location")); | |
2205 | ||
2206 | format_start = cmdrest; | |
2207 | ||
2208 | fpieces = parse_format_string (&cmdrest); | |
2209 | ||
2210 | old_cleanups = make_cleanup (free_format_pieces_cleanup, &fpieces); | |
2211 | ||
2212 | format_end = cmdrest; | |
2213 | ||
2214 | if (*cmdrest++ != '"') | |
2215 | error (_("Bad format string, non-terminated '\"'.")); | |
2216 | ||
2217 | cmdrest = skip_spaces (cmdrest); | |
2218 | ||
2219 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2220 | error (_("Invalid argument syntax")); | |
2221 | ||
2222 | if (*cmdrest == ',') | |
2223 | cmdrest++; | |
2224 | cmdrest = skip_spaces (cmdrest); | |
2225 | ||
2226 | /* For each argument, make an expression. */ | |
2227 | ||
2228 | argvec = (struct expression **) alloca (strlen (cmd) | |
2229 | * sizeof (struct expression *)); | |
2230 | ||
2231 | nargs = 0; | |
2232 | while (*cmdrest != '\0') | |
2233 | { | |
2234 | char *cmd1; | |
2235 | ||
2236 | cmd1 = cmdrest; | |
2237 | expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); | |
2238 | argvec[nargs++] = expr; | |
2239 | cmdrest = cmd1; | |
2240 | if (*cmdrest == ',') | |
2241 | ++cmdrest; | |
2242 | } | |
2243 | ||
2244 | /* We don't want to stop processing, so catch any errors | |
2245 | that may show up. */ | |
2246 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
2247 | { | |
2248 | aexpr = gen_printf (scope, gdbarch, 0, 0, | |
2249 | format_start, format_end - format_start, | |
2250 | fpieces, nargs, argvec); | |
2251 | } | |
2252 | ||
2253 | if (ex.reason < 0) | |
2254 | { | |
2255 | /* If we got here, it means the command could not be parsed to a valid | |
2256 | bytecode expression and thus can't be evaluated on the target's side. | |
2257 | It's no use iterating through the other commands. */ | |
2258 | return NULL; | |
2259 | } | |
2260 | ||
2261 | do_cleanups (old_cleanups); | |
2262 | ||
2263 | /* We have a valid agent expression, return it. */ | |
2264 | return aexpr; | |
2265 | } | |
2266 | ||
2267 | /* Based on location BL, create a list of breakpoint commands to be | |
2268 | passed on to the target. If we have duplicated locations with | |
2269 | different commands, we will add any such to the list. */ | |
2270 | ||
2271 | static void | |
2272 | build_target_command_list (struct bp_location *bl) | |
2273 | { | |
2274 | struct bp_location **locp = NULL, **loc2p; | |
2275 | int null_command_or_parse_error = 0; | |
2276 | int modified = bl->needs_update; | |
2277 | struct bp_location *loc; | |
2278 | ||
2279 | /* For now, limit to agent-style dprintf breakpoints. */ | |
2280 | if (bl->owner->type != bp_dprintf | |
2281 | || strcmp (dprintf_style, dprintf_style_agent) != 0) | |
2282 | return; | |
2283 | ||
2284 | if (!target_can_run_breakpoint_commands ()) | |
2285 | return; | |
2286 | ||
2287 | /* Do a first pass to check for locations with no assigned | |
2288 | conditions or conditions that fail to parse to a valid agent expression | |
2289 | bytecode. If any of these happen, then it's no use to send conditions | |
2290 | to the target since this location will always trigger and generate a | |
2291 | response back to GDB. */ | |
2292 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2293 | { | |
2294 | loc = (*loc2p); | |
2295 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2296 | { | |
2297 | if (modified) | |
2298 | { | |
2299 | struct agent_expr *aexpr; | |
2300 | ||
2301 | /* Re-parse the commands since something changed. In that | |
2302 | case we already freed the command bytecodes (see | |
2303 | force_breakpoint_reinsertion). We just | |
2304 | need to parse the command to bytecodes again. */ | |
2305 | aexpr = parse_cmd_to_aexpr (bl->address, | |
2306 | loc->owner->extra_string); | |
2307 | loc->cmd_bytecode = aexpr; | |
2308 | ||
2309 | if (!aexpr) | |
2310 | continue; | |
2311 | } | |
2312 | ||
2313 | /* If we have a NULL bytecode expression, it means something | |
2314 | went wrong or we have a null command expression. */ | |
2315 | if (!loc->cmd_bytecode) | |
2316 | { | |
2317 | null_command_or_parse_error = 1; | |
2318 | break; | |
2319 | } | |
2320 | } | |
2321 | } | |
2322 | ||
2323 | /* If anything failed, then we're not doing target-side commands, | |
2324 | and so clean up. */ | |
2325 | if (null_command_or_parse_error) | |
2326 | { | |
2327 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2328 | { | |
2329 | loc = (*loc2p); | |
2330 | if (is_breakpoint (loc->owner) | |
2331 | && loc->pspace->num == bl->pspace->num) | |
2332 | { | |
2333 | /* Only go as far as the first NULL bytecode is | |
2334 | located. */ | |
2335 | if (!loc->cond_bytecode) | |
2336 | return; | |
2337 | ||
2338 | free_agent_expr (loc->cond_bytecode); | |
2339 | loc->cond_bytecode = NULL; | |
2340 | } | |
2341 | } | |
2342 | } | |
2343 | ||
2344 | /* No NULL commands or failed bytecode generation. Build a command list | |
2345 | for this location's address. */ | |
2346 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2347 | { | |
2348 | loc = (*loc2p); | |
2349 | if (loc->owner->extra_string | |
2350 | && is_breakpoint (loc->owner) | |
2351 | && loc->pspace->num == bl->pspace->num | |
2352 | && loc->owner->enable_state == bp_enabled | |
2353 | && loc->enabled) | |
2354 | /* Add the command to the vector. This will be used later | |
2355 | to send the commands to the target. */ | |
2356 | VEC_safe_push (agent_expr_p, bl->target_info.tcommands, | |
2357 | loc->cmd_bytecode); | |
2358 | } | |
2359 | ||
2360 | bl->target_info.persist = 0; | |
2361 | /* Maybe flag this location as persistent. */ | |
2362 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2363 | bl->target_info.persist = 1; | |
2364 | } | |
2365 | ||
35df4500 TJB |
2366 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2367 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2368 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2369 | Returns 0 for success, 1 if the bp_location type is not supported or |
2370 | -1 for failure. | |
879bfdc2 | 2371 | |
4a64f543 MS |
2372 | NOTE drow/2003-09-09: This routine could be broken down to an |
2373 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2374 | static int |
35df4500 | 2375 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2376 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2377 | int *disabled_breaks, |
dd61ec5c MW |
2378 | int *hw_breakpoint_error, |
2379 | int *hw_bp_error_explained_already) | |
879bfdc2 DJ |
2380 | { |
2381 | int val = 0; | |
dd61ec5c MW |
2382 | char *hw_bp_err_string = NULL; |
2383 | struct gdb_exception e; | |
879bfdc2 | 2384 | |
b775012e | 2385 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2386 | return 0; |
2387 | ||
35c63cd8 JB |
2388 | /* Note we don't initialize bl->target_info, as that wipes out |
2389 | the breakpoint location's shadow_contents if the breakpoint | |
2390 | is still inserted at that location. This in turn breaks | |
2391 | target_read_memory which depends on these buffers when | |
2392 | a memory read is requested at the breakpoint location: | |
2393 | Once the target_info has been wiped, we fail to see that | |
2394 | we have a breakpoint inserted at that address and thus | |
2395 | read the breakpoint instead of returning the data saved in | |
2396 | the breakpoint location's shadow contents. */ | |
35df4500 TJB |
2397 | bl->target_info.placed_address = bl->address; |
2398 | bl->target_info.placed_address_space = bl->pspace->aspace; | |
f1310107 | 2399 | bl->target_info.length = bl->length; |
8181d85f | 2400 | |
b775012e LM |
2401 | /* When working with target-side conditions, we must pass all the conditions |
2402 | for the same breakpoint address down to the target since GDB will not | |
2403 | insert those locations. With a list of breakpoint conditions, the target | |
2404 | can decide when to stop and notify GDB. */ | |
2405 | ||
2406 | if (is_breakpoint (bl->owner)) | |
2407 | { | |
2408 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2409 | build_target_command_list (bl); |
2410 | /* Reset the modification marker. */ | |
b775012e LM |
2411 | bl->needs_update = 0; |
2412 | } | |
2413 | ||
35df4500 TJB |
2414 | if (bl->loc_type == bp_loc_software_breakpoint |
2415 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 2416 | { |
35df4500 | 2417 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
2418 | { |
2419 | /* If the explicitly specified breakpoint type | |
2420 | is not hardware breakpoint, check the memory map to see | |
2421 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 2422 | |
765dc015 VP |
2423 | Two important cases are: |
2424 | - location type is not hardware breakpoint, memory | |
2425 | is readonly. We change the type of the location to | |
2426 | hardware breakpoint. | |
4a64f543 MS |
2427 | - location type is hardware breakpoint, memory is |
2428 | read-write. This means we've previously made the | |
2429 | location hardware one, but then the memory map changed, | |
2430 | so we undo. | |
765dc015 | 2431 | |
4a64f543 MS |
2432 | When breakpoints are removed, remove_breakpoints will use |
2433 | location types we've just set here, the only possible | |
2434 | problem is that memory map has changed during running | |
2435 | program, but it's not going to work anyway with current | |
2436 | gdb. */ | |
765dc015 | 2437 | struct mem_region *mr |
35df4500 | 2438 | = lookup_mem_region (bl->target_info.placed_address); |
765dc015 VP |
2439 | |
2440 | if (mr) | |
2441 | { | |
2442 | if (automatic_hardware_breakpoints) | |
2443 | { | |
765dc015 VP |
2444 | enum bp_loc_type new_type; |
2445 | ||
2446 | if (mr->attrib.mode != MEM_RW) | |
2447 | new_type = bp_loc_hardware_breakpoint; | |
2448 | else | |
2449 | new_type = bp_loc_software_breakpoint; | |
2450 | ||
35df4500 | 2451 | if (new_type != bl->loc_type) |
765dc015 VP |
2452 | { |
2453 | static int said = 0; | |
cc59ec59 | 2454 | |
35df4500 | 2455 | bl->loc_type = new_type; |
765dc015 VP |
2456 | if (!said) |
2457 | { | |
3e43a32a MS |
2458 | fprintf_filtered (gdb_stdout, |
2459 | _("Note: automatically using " | |
2460 | "hardware breakpoints for " | |
2461 | "read-only addresses.\n")); | |
765dc015 VP |
2462 | said = 1; |
2463 | } | |
2464 | } | |
2465 | } | |
35df4500 | 2466 | else if (bl->loc_type == bp_loc_software_breakpoint |
765dc015 | 2467 | && mr->attrib.mode != MEM_RW) |
3e43a32a MS |
2468 | warning (_("cannot set software breakpoint " |
2469 | "at readonly address %s"), | |
35df4500 | 2470 | paddress (bl->gdbarch, bl->address)); |
765dc015 VP |
2471 | } |
2472 | } | |
2473 | ||
879bfdc2 DJ |
2474 | /* First check to see if we have to handle an overlay. */ |
2475 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2476 | || bl->section == NULL |
2477 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2478 | { |
2479 | /* No overlay handling: just set the breakpoint. */ | |
dd61ec5c MW |
2480 | TRY_CATCH (e, RETURN_MASK_ALL) |
2481 | { | |
2482 | val = bl->owner->ops->insert_location (bl); | |
2483 | } | |
2484 | if (e.reason < 0) | |
2485 | { | |
2486 | val = 1; | |
2487 | hw_bp_err_string = (char *) e.message; | |
2488 | } | |
879bfdc2 DJ |
2489 | } |
2490 | else | |
2491 | { | |
4a64f543 | 2492 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2493 | Shall we set a breakpoint at the LMA? */ |
2494 | if (!overlay_events_enabled) | |
2495 | { | |
2496 | /* Yes -- overlay event support is not active, | |
2497 | so we must try to set a breakpoint at the LMA. | |
2498 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2499 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2500 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2501 | bl->owner->number); |
879bfdc2 DJ |
2502 | else |
2503 | { | |
35df4500 TJB |
2504 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2505 | bl->section); | |
879bfdc2 | 2506 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 TJB |
2507 | bl->overlay_target_info = bl->target_info; |
2508 | bl->overlay_target_info.placed_address = addr; | |
2509 | val = target_insert_breakpoint (bl->gdbarch, | |
2510 | &bl->overlay_target_info); | |
879bfdc2 | 2511 | if (val != 0) |
99361f52 | 2512 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
2513 | "Overlay breakpoint %d " |
2514 | "failed: in ROM?\n", | |
35df4500 | 2515 | bl->owner->number); |
879bfdc2 DJ |
2516 | } |
2517 | } | |
2518 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2519 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2520 | { |
2521 | /* Yes. This overlay section is mapped into memory. */ | |
dd61ec5c MW |
2522 | TRY_CATCH (e, RETURN_MASK_ALL) |
2523 | { | |
2524 | val = bl->owner->ops->insert_location (bl); | |
2525 | } | |
2526 | if (e.reason < 0) | |
2527 | { | |
2528 | val = 1; | |
2529 | hw_bp_err_string = (char *) e.message; | |
2530 | } | |
879bfdc2 DJ |
2531 | } |
2532 | else | |
2533 | { | |
2534 | /* No. This breakpoint will not be inserted. | |
2535 | No error, but do not mark the bp as 'inserted'. */ | |
2536 | return 0; | |
2537 | } | |
2538 | } | |
2539 | ||
2540 | if (val) | |
2541 | { | |
2542 | /* Can't set the breakpoint. */ | |
35df4500 | 2543 | if (solib_name_from_address (bl->pspace, bl->address)) |
879bfdc2 | 2544 | { |
4a64f543 | 2545 | /* See also: disable_breakpoints_in_shlibs. */ |
879bfdc2 | 2546 | val = 0; |
35df4500 | 2547 | bl->shlib_disabled = 1; |
8d3788bd | 2548 | observer_notify_breakpoint_modified (bl->owner); |
3fbb6ffa TJB |
2549 | if (!*disabled_breaks) |
2550 | { | |
2551 | fprintf_unfiltered (tmp_error_stream, | |
2552 | "Cannot insert breakpoint %d.\n", | |
2553 | bl->owner->number); | |
2554 | fprintf_unfiltered (tmp_error_stream, | |
2555 | "Temporarily disabling shared " | |
2556 | "library breakpoints:\n"); | |
2557 | } | |
2558 | *disabled_breaks = 1; | |
879bfdc2 | 2559 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 2560 | "breakpoint #%d\n", bl->owner->number); |
879bfdc2 DJ |
2561 | } |
2562 | else | |
879bfdc2 | 2563 | { |
35df4500 | 2564 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2565 | { |
dd61ec5c MW |
2566 | *hw_breakpoint_error = 1; |
2567 | *hw_bp_error_explained_already = hw_bp_err_string != NULL; | |
2568 | fprintf_unfiltered (tmp_error_stream, | |
2569 | "Cannot insert hardware breakpoint %d%s", | |
2570 | bl->owner->number, hw_bp_err_string ? ":" : ".\n"); | |
2571 | if (hw_bp_err_string) | |
2572 | fprintf_unfiltered (tmp_error_stream, "%s.\n", hw_bp_err_string); | |
879bfdc2 DJ |
2573 | } |
2574 | else | |
2575 | { | |
2576 | fprintf_unfiltered (tmp_error_stream, | |
2577 | "Cannot insert breakpoint %d.\n", | |
35df4500 | 2578 | bl->owner->number); |
879bfdc2 DJ |
2579 | fprintf_filtered (tmp_error_stream, |
2580 | "Error accessing memory address "); | |
35df4500 | 2581 | fputs_filtered (paddress (bl->gdbarch, bl->address), |
5af949e3 | 2582 | tmp_error_stream); |
879bfdc2 DJ |
2583 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
2584 | safe_strerror (val)); | |
2585 | } | |
2586 | ||
2587 | } | |
2588 | } | |
2589 | else | |
35df4500 | 2590 | bl->inserted = 1; |
879bfdc2 DJ |
2591 | |
2592 | return val; | |
2593 | } | |
2594 | ||
35df4500 | 2595 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2596 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2597 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2598 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2599 | { |
77b06cd7 TJB |
2600 | gdb_assert (bl->owner->ops != NULL |
2601 | && bl->owner->ops->insert_location != NULL); | |
2602 | ||
2603 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2604 | |
2605 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2606 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2607 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
2608 | { |
2609 | struct bp_location *loc, **loc_temp; | |
2610 | ||
2611 | /* But don't try to insert it, if there's already another | |
2612 | hw_access location that would be considered a duplicate | |
2613 | of this one. */ | |
2614 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 2615 | if (loc != bl |
85d721b8 | 2616 | && loc->watchpoint_type == hw_access |
35df4500 | 2617 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2618 | { |
35df4500 TJB |
2619 | bl->duplicate = 1; |
2620 | bl->inserted = 1; | |
2621 | bl->target_info = loc->target_info; | |
2622 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2623 | val = 0; |
2624 | break; | |
2625 | } | |
2626 | ||
2627 | if (val == 1) | |
2628 | { | |
77b06cd7 TJB |
2629 | bl->watchpoint_type = hw_access; |
2630 | val = bl->owner->ops->insert_location (bl); | |
2631 | ||
2632 | if (val) | |
2633 | /* Back to the original value. */ | |
2634 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2635 | } |
2636 | } | |
2637 | ||
35df4500 | 2638 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2639 | } |
2640 | ||
35df4500 | 2641 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2642 | { |
77b06cd7 TJB |
2643 | gdb_assert (bl->owner->ops != NULL |
2644 | && bl->owner->ops->insert_location != NULL); | |
2645 | ||
2646 | val = bl->owner->ops->insert_location (bl); | |
2647 | if (val) | |
2648 | { | |
2649 | bl->owner->enable_state = bp_disabled; | |
2650 | ||
2651 | if (val == 1) | |
2652 | warning (_("\ | |
2653 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2654 | of catchpoint."), bl->owner->number); | |
2655 | else | |
2656 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2657 | } | |
2658 | ||
2659 | bl->inserted = (val == 0); | |
1640b821 DJ |
2660 | |
2661 | /* We've already printed an error message if there was a problem | |
2662 | inserting this catchpoint, and we've disabled the catchpoint, | |
2663 | so just return success. */ | |
2664 | return 0; | |
879bfdc2 DJ |
2665 | } |
2666 | ||
2667 | return 0; | |
2668 | } | |
2669 | ||
6c95b8df PA |
2670 | /* This function is called when program space PSPACE is about to be |
2671 | deleted. It takes care of updating breakpoints to not reference | |
2672 | PSPACE anymore. */ | |
2673 | ||
2674 | void | |
2675 | breakpoint_program_space_exit (struct program_space *pspace) | |
2676 | { | |
2677 | struct breakpoint *b, *b_temp; | |
876fa593 | 2678 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
2679 | |
2680 | /* Remove any breakpoint that was set through this program space. */ | |
2681 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
2682 | { | |
2683 | if (b->pspace == pspace) | |
2684 | delete_breakpoint (b); | |
2685 | } | |
2686 | ||
2687 | /* Breakpoints set through other program spaces could have locations | |
2688 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 2689 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
2690 | { |
2691 | struct bp_location *tmp; | |
2692 | ||
2693 | if (loc->pspace == pspace) | |
2694 | { | |
2bdf28a0 | 2695 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2696 | if (loc->owner->loc == loc) |
2697 | loc->owner->loc = loc->next; | |
2698 | else | |
2699 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2700 | if (tmp->next == loc) | |
2701 | { | |
2702 | tmp->next = loc->next; | |
2703 | break; | |
2704 | } | |
2705 | } | |
2706 | } | |
2707 | ||
2708 | /* Now update the global location list to permanently delete the | |
2709 | removed locations above. */ | |
2710 | update_global_location_list (0); | |
2711 | } | |
2712 | ||
74960c60 VP |
2713 | /* Make sure all breakpoints are inserted in inferior. |
2714 | Throws exception on any error. | |
2715 | A breakpoint that is already inserted won't be inserted | |
2716 | again, so calling this function twice is safe. */ | |
2717 | void | |
2718 | insert_breakpoints (void) | |
2719 | { | |
2720 | struct breakpoint *bpt; | |
2721 | ||
2722 | ALL_BREAKPOINTS (bpt) | |
2723 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
2724 | { |
2725 | struct watchpoint *w = (struct watchpoint *) bpt; | |
2726 | ||
2727 | update_watchpoint (w, 0 /* don't reparse. */); | |
2728 | } | |
74960c60 | 2729 | |
b60e7edf | 2730 | update_global_location_list (1); |
74960c60 | 2731 | |
c35b1492 PA |
2732 | /* update_global_location_list does not insert breakpoints when |
2733 | always_inserted_mode is not enabled. Explicitly insert them | |
2734 | now. */ | |
2735 | if (!breakpoints_always_inserted_mode ()) | |
74960c60 VP |
2736 | insert_breakpoint_locations (); |
2737 | } | |
2738 | ||
20388dd6 YQ |
2739 | /* Invoke CALLBACK for each of bp_location. */ |
2740 | ||
2741 | void | |
2742 | iterate_over_bp_locations (walk_bp_location_callback callback) | |
2743 | { | |
2744 | struct bp_location *loc, **loc_tmp; | |
2745 | ||
2746 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
2747 | { | |
2748 | callback (loc, NULL); | |
2749 | } | |
2750 | } | |
2751 | ||
b775012e LM |
2752 | /* This is used when we need to synch breakpoint conditions between GDB and the |
2753 | target. It is the case with deleting and disabling of breakpoints when using | |
2754 | always-inserted mode. */ | |
2755 | ||
2756 | static void | |
2757 | update_inserted_breakpoint_locations (void) | |
2758 | { | |
2759 | struct bp_location *bl, **blp_tmp; | |
2760 | int error_flag = 0; | |
2761 | int val = 0; | |
2762 | int disabled_breaks = 0; | |
2763 | int hw_breakpoint_error = 0; | |
dd61ec5c | 2764 | int hw_bp_details_reported = 0; |
b775012e LM |
2765 | |
2766 | struct ui_file *tmp_error_stream = mem_fileopen (); | |
2767 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); | |
2768 | ||
2769 | /* Explicitly mark the warning -- this will only be printed if | |
2770 | there was an error. */ | |
2771 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
2772 | ||
2773 | save_current_space_and_thread (); | |
2774 | ||
2775 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
2776 | { | |
2777 | /* We only want to update software breakpoints and hardware | |
2778 | breakpoints. */ | |
2779 | if (!is_breakpoint (bl->owner)) | |
2780 | continue; | |
2781 | ||
2782 | /* We only want to update locations that are already inserted | |
2783 | and need updating. This is to avoid unwanted insertion during | |
2784 | deletion of breakpoints. */ | |
2785 | if (!bl->inserted || (bl->inserted && !bl->needs_update)) | |
2786 | continue; | |
2787 | ||
2788 | switch_to_program_space_and_thread (bl->pspace); | |
2789 | ||
2790 | /* For targets that support global breakpoints, there's no need | |
2791 | to select an inferior to insert breakpoint to. In fact, even | |
2792 | if we aren't attached to any process yet, we should still | |
2793 | insert breakpoints. */ | |
2794 | if (!gdbarch_has_global_breakpoints (target_gdbarch) | |
2795 | && ptid_equal (inferior_ptid, null_ptid)) | |
2796 | continue; | |
2797 | ||
2798 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, | |
dd61ec5c | 2799 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
2800 | if (val) |
2801 | error_flag = val; | |
2802 | } | |
2803 | ||
2804 | if (error_flag) | |
2805 | { | |
2806 | target_terminal_ours_for_output (); | |
2807 | error_stream (tmp_error_stream); | |
2808 | } | |
2809 | ||
2810 | do_cleanups (cleanups); | |
2811 | } | |
2812 | ||
c30eee59 | 2813 | /* Used when starting or continuing the program. */ |
c906108c | 2814 | |
74960c60 VP |
2815 | static void |
2816 | insert_breakpoint_locations (void) | |
c906108c | 2817 | { |
a5606eee | 2818 | struct breakpoint *bpt; |
35df4500 | 2819 | struct bp_location *bl, **blp_tmp; |
eacd795a | 2820 | int error_flag = 0; |
c906108c | 2821 | int val = 0; |
3fbb6ffa | 2822 | int disabled_breaks = 0; |
81d0cc19 | 2823 | int hw_breakpoint_error = 0; |
dd61ec5c | 2824 | int hw_bp_error_explained_already = 0; |
c906108c | 2825 | |
81d0cc19 | 2826 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 2827 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 2828 | |
81d0cc19 GS |
2829 | /* Explicitly mark the warning -- this will only be printed if |
2830 | there was an error. */ | |
2831 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
6c95b8df PA |
2832 | |
2833 | save_current_space_and_thread (); | |
2834 | ||
35df4500 | 2835 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 2836 | { |
b775012e | 2837 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2838 | continue; |
2839 | ||
4a64f543 MS |
2840 | /* There is no point inserting thread-specific breakpoints if |
2841 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
2842 | has BL->OWNER always non-NULL. */ | |
35df4500 TJB |
2843 | if (bl->owner->thread != -1 |
2844 | && !valid_thread_id (bl->owner->thread)) | |
f365de73 AS |
2845 | continue; |
2846 | ||
35df4500 | 2847 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
2848 | |
2849 | /* For targets that support global breakpoints, there's no need | |
2850 | to select an inferior to insert breakpoint to. In fact, even | |
2851 | if we aren't attached to any process yet, we should still | |
2852 | insert breakpoints. */ | |
2853 | if (!gdbarch_has_global_breakpoints (target_gdbarch) | |
2854 | && ptid_equal (inferior_ptid, null_ptid)) | |
2855 | continue; | |
2856 | ||
3fbb6ffa | 2857 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2858 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 2859 | if (val) |
eacd795a | 2860 | error_flag = val; |
879bfdc2 | 2861 | } |
c906108c | 2862 | |
4a64f543 MS |
2863 | /* If we failed to insert all locations of a watchpoint, remove |
2864 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
2865 | ALL_BREAKPOINTS (bpt) |
2866 | { | |
2867 | int some_failed = 0; | |
2868 | struct bp_location *loc; | |
2869 | ||
2870 | if (!is_hardware_watchpoint (bpt)) | |
2871 | continue; | |
2872 | ||
d6b74ac4 | 2873 | if (!breakpoint_enabled (bpt)) |
a5606eee | 2874 | continue; |
74960c60 VP |
2875 | |
2876 | if (bpt->disposition == disp_del_at_next_stop) | |
2877 | continue; | |
a5606eee VP |
2878 | |
2879 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 2880 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
2881 | { |
2882 | some_failed = 1; | |
2883 | break; | |
2884 | } | |
2885 | if (some_failed) | |
2886 | { | |
2887 | for (loc = bpt->loc; loc; loc = loc->next) | |
2888 | if (loc->inserted) | |
2889 | remove_breakpoint (loc, mark_uninserted); | |
2890 | ||
2891 | hw_breakpoint_error = 1; | |
2892 | fprintf_unfiltered (tmp_error_stream, | |
2893 | "Could not insert hardware watchpoint %d.\n", | |
2894 | bpt->number); | |
eacd795a | 2895 | error_flag = -1; |
a5606eee VP |
2896 | } |
2897 | } | |
2898 | ||
eacd795a | 2899 | if (error_flag) |
81d0cc19 GS |
2900 | { |
2901 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
2902 | message about possibly exhausted resources. */ | |
dd61ec5c | 2903 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 2904 | { |
c6510018 MS |
2905 | fprintf_unfiltered (tmp_error_stream, |
2906 | "Could not insert hardware breakpoints:\n\ | |
2907 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 2908 | } |
81d0cc19 GS |
2909 | target_terminal_ours_for_output (); |
2910 | error_stream (tmp_error_stream); | |
2911 | } | |
f7545552 TT |
2912 | |
2913 | do_cleanups (cleanups); | |
c906108c SS |
2914 | } |
2915 | ||
c30eee59 TJB |
2916 | /* Used when the program stops. |
2917 | Returns zero if successful, or non-zero if there was a problem | |
2918 | removing a breakpoint location. */ | |
2919 | ||
c906108c | 2920 | int |
fba45db2 | 2921 | remove_breakpoints (void) |
c906108c | 2922 | { |
35df4500 | 2923 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 2924 | int val = 0; |
c906108c | 2925 | |
35df4500 | 2926 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2927 | { |
1e4d1764 | 2928 | if (bl->inserted && !is_tracepoint (bl->owner)) |
35df4500 | 2929 | val |= remove_breakpoint (bl, mark_uninserted); |
c5aa993b | 2930 | } |
3a1bae8e | 2931 | return val; |
c906108c SS |
2932 | } |
2933 | ||
6c95b8df PA |
2934 | /* Remove breakpoints of process PID. */ |
2935 | ||
2936 | int | |
2937 | remove_breakpoints_pid (int pid) | |
2938 | { | |
35df4500 | 2939 | struct bp_location *bl, **blp_tmp; |
6c95b8df PA |
2940 | int val; |
2941 | struct inferior *inf = find_inferior_pid (pid); | |
2942 | ||
35df4500 | 2943 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 2944 | { |
35df4500 | 2945 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2946 | continue; |
2947 | ||
d3ce09f5 SS |
2948 | if (bl->owner->type == bp_dprintf) |
2949 | continue; | |
2950 | ||
35df4500 | 2951 | if (bl->inserted) |
6c95b8df | 2952 | { |
35df4500 | 2953 | val = remove_breakpoint (bl, mark_uninserted); |
6c95b8df PA |
2954 | if (val != 0) |
2955 | return val; | |
2956 | } | |
2957 | } | |
2958 | return 0; | |
2959 | } | |
2960 | ||
c906108c | 2961 | int |
fba45db2 | 2962 | reattach_breakpoints (int pid) |
c906108c | 2963 | { |
6c95b8df | 2964 | struct cleanup *old_chain; |
35df4500 | 2965 | struct bp_location *bl, **blp_tmp; |
c906108c | 2966 | int val; |
86b887df | 2967 | struct ui_file *tmp_error_stream; |
dd61ec5c | 2968 | int dummy1 = 0, dummy2 = 0, dummy3 = 0; |
6c95b8df PA |
2969 | struct inferior *inf; |
2970 | struct thread_info *tp; | |
2971 | ||
2972 | tp = any_live_thread_of_process (pid); | |
2973 | if (tp == NULL) | |
2974 | return 1; | |
2975 | ||
2976 | inf = find_inferior_pid (pid); | |
2977 | old_chain = save_inferior_ptid (); | |
2978 | ||
2979 | inferior_ptid = tp->ptid; | |
a4954f26 | 2980 | |
86b887df | 2981 | tmp_error_stream = mem_fileopen (); |
a4954f26 | 2982 | make_cleanup_ui_file_delete (tmp_error_stream); |
c906108c | 2983 | |
35df4500 | 2984 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2985 | { |
35df4500 | 2986 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2987 | continue; |
2988 | ||
35df4500 | 2989 | if (bl->inserted) |
c5aa993b | 2990 | { |
35df4500 | 2991 | bl->inserted = 0; |
dd61ec5c | 2992 | val = insert_bp_location (bl, tmp_error_stream, &dummy1, &dummy2, &dummy3); |
c5aa993b JM |
2993 | if (val != 0) |
2994 | { | |
ce696e05 | 2995 | do_cleanups (old_chain); |
c5aa993b JM |
2996 | return val; |
2997 | } | |
2998 | } | |
2999 | } | |
ce696e05 | 3000 | do_cleanups (old_chain); |
c906108c SS |
3001 | return 0; |
3002 | } | |
3003 | ||
e58b0e63 PA |
3004 | static int internal_breakpoint_number = -1; |
3005 | ||
84f4c1fe PM |
3006 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3007 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3008 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3009 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3010 | breakpoint_count and that value incremented. Internal breakpoints |
3011 | do not set the internal var bpnum. */ | |
3012 | static void | |
3013 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3014 | { | |
3015 | if (internal) | |
3016 | b->number = internal_breakpoint_number--; | |
3017 | else | |
3018 | { | |
3019 | set_breakpoint_count (breakpoint_count + 1); | |
3020 | b->number = breakpoint_count; | |
3021 | } | |
3022 | } | |
3023 | ||
e62c965a | 3024 | static struct breakpoint * |
a6d9a66e | 3025 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 3026 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 3027 | const struct breakpoint_ops *ops) |
e62c965a | 3028 | { |
e62c965a PP |
3029 | struct symtab_and_line sal; |
3030 | struct breakpoint *b; | |
3031 | ||
4a64f543 | 3032 | init_sal (&sal); /* Initialize to zeroes. */ |
e62c965a PP |
3033 | |
3034 | sal.pc = address; | |
3035 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 3036 | sal.pspace = current_program_space; |
e62c965a | 3037 | |
06edf0c0 | 3038 | b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
3039 | b->number = internal_breakpoint_number--; |
3040 | b->disposition = disp_donttouch; | |
3041 | ||
3042 | return b; | |
3043 | } | |
3044 | ||
17450429 PP |
3045 | static const char *const longjmp_names[] = |
3046 | { | |
3047 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3048 | }; | |
3049 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3050 | ||
3051 | /* Per-objfile data private to breakpoint.c. */ | |
3052 | struct breakpoint_objfile_data | |
3053 | { | |
3054 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
3055 | struct minimal_symbol *overlay_msym; | |
3056 | ||
3057 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
3058 | struct minimal_symbol *longjmp_msym[NUM_LONGJMP_NAMES]; | |
3059 | ||
28106bc2 SDJ |
3060 | /* True if we have looked for longjmp probes. */ |
3061 | int longjmp_searched; | |
3062 | ||
3063 | /* SystemTap probe points for longjmp (if any). */ | |
3064 | VEC (probe_p) *longjmp_probes; | |
3065 | ||
17450429 PP |
3066 | /* Minimal symbol for "std::terminate()" (if any). */ |
3067 | struct minimal_symbol *terminate_msym; | |
3068 | ||
3069 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
3070 | struct minimal_symbol *exception_msym; | |
28106bc2 SDJ |
3071 | |
3072 | /* True if we have looked for exception probes. */ | |
3073 | int exception_searched; | |
3074 | ||
3075 | /* SystemTap probe points for unwinding (if any). */ | |
3076 | VEC (probe_p) *exception_probes; | |
17450429 PP |
3077 | }; |
3078 | ||
3079 | static const struct objfile_data *breakpoint_objfile_key; | |
3080 | ||
3081 | /* Minimal symbol not found sentinel. */ | |
3082 | static struct minimal_symbol msym_not_found; | |
3083 | ||
3084 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3085 | ||
3086 | static int | |
3087 | msym_not_found_p (const struct minimal_symbol *msym) | |
3088 | { | |
3089 | return msym == &msym_not_found; | |
3090 | } | |
3091 | ||
3092 | /* Return per-objfile data needed by breakpoint.c. | |
3093 | Allocate the data if necessary. */ | |
3094 | ||
3095 | static struct breakpoint_objfile_data * | |
3096 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3097 | { | |
3098 | struct breakpoint_objfile_data *bp_objfile_data; | |
3099 | ||
3100 | bp_objfile_data = objfile_data (objfile, breakpoint_objfile_key); | |
3101 | if (bp_objfile_data == NULL) | |
3102 | { | |
3103 | bp_objfile_data = obstack_alloc (&objfile->objfile_obstack, | |
3104 | sizeof (*bp_objfile_data)); | |
3105 | ||
3106 | memset (bp_objfile_data, 0, sizeof (*bp_objfile_data)); | |
3107 | set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data); | |
3108 | } | |
3109 | return bp_objfile_data; | |
3110 | } | |
3111 | ||
28106bc2 SDJ |
3112 | static void |
3113 | free_breakpoint_probes (struct objfile *obj, void *data) | |
3114 | { | |
3115 | struct breakpoint_objfile_data *bp_objfile_data = data; | |
3116 | ||
3117 | VEC_free (probe_p, bp_objfile_data->longjmp_probes); | |
3118 | VEC_free (probe_p, bp_objfile_data->exception_probes); | |
3119 | } | |
3120 | ||
e62c965a | 3121 | static void |
af02033e | 3122 | create_overlay_event_breakpoint (void) |
e62c965a | 3123 | { |
69de3c6a | 3124 | struct objfile *objfile; |
af02033e | 3125 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3126 | |
69de3c6a PP |
3127 | ALL_OBJFILES (objfile) |
3128 | { | |
3129 | struct breakpoint *b; | |
17450429 PP |
3130 | struct breakpoint_objfile_data *bp_objfile_data; |
3131 | CORE_ADDR addr; | |
69de3c6a | 3132 | |
17450429 PP |
3133 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3134 | ||
3135 | if (msym_not_found_p (bp_objfile_data->overlay_msym)) | |
3136 | continue; | |
3137 | ||
3138 | if (bp_objfile_data->overlay_msym == NULL) | |
3139 | { | |
3140 | struct minimal_symbol *m; | |
3141 | ||
3142 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3143 | if (m == NULL) | |
3144 | { | |
3145 | /* Avoid future lookups in this objfile. */ | |
3146 | bp_objfile_data->overlay_msym = &msym_not_found; | |
3147 | continue; | |
3148 | } | |
3149 | bp_objfile_data->overlay_msym = m; | |
3150 | } | |
e62c965a | 3151 | |
17450429 PP |
3152 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
3153 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
06edf0c0 PA |
3154 | bp_overlay_event, |
3155 | &internal_breakpoint_ops); | |
69de3c6a | 3156 | b->addr_string = xstrdup (func_name); |
e62c965a | 3157 | |
69de3c6a PP |
3158 | if (overlay_debugging == ovly_auto) |
3159 | { | |
3160 | b->enable_state = bp_enabled; | |
3161 | overlay_events_enabled = 1; | |
3162 | } | |
3163 | else | |
3164 | { | |
3165 | b->enable_state = bp_disabled; | |
3166 | overlay_events_enabled = 0; | |
3167 | } | |
e62c965a PP |
3168 | } |
3169 | update_global_location_list (1); | |
3170 | } | |
3171 | ||
0fd8e87f | 3172 | static void |
af02033e | 3173 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 3174 | { |
6c95b8df | 3175 | struct program_space *pspace; |
6c95b8df PA |
3176 | struct cleanup *old_chain; |
3177 | ||
3178 | old_chain = save_current_program_space (); | |
0fd8e87f | 3179 | |
6c95b8df | 3180 | ALL_PSPACES (pspace) |
af02033e PP |
3181 | { |
3182 | struct objfile *objfile; | |
3183 | ||
3184 | set_current_program_space (pspace); | |
3185 | ||
3186 | ALL_OBJFILES (objfile) | |
0fd8e87f | 3187 | { |
af02033e PP |
3188 | int i; |
3189 | struct gdbarch *gdbarch; | |
17450429 | 3190 | struct breakpoint_objfile_data *bp_objfile_data; |
0fd8e87f | 3191 | |
af02033e PP |
3192 | gdbarch = get_objfile_arch (objfile); |
3193 | if (!gdbarch_get_longjmp_target_p (gdbarch)) | |
0fd8e87f UW |
3194 | continue; |
3195 | ||
17450429 PP |
3196 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3197 | ||
28106bc2 SDJ |
3198 | if (!bp_objfile_data->longjmp_searched) |
3199 | { | |
3200 | bp_objfile_data->longjmp_probes | |
3201 | = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
3202 | bp_objfile_data->longjmp_searched = 1; | |
3203 | } | |
3204 | ||
3205 | if (bp_objfile_data->longjmp_probes != NULL) | |
3206 | { | |
3207 | int i; | |
3208 | struct probe *probe; | |
3209 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3210 | ||
3211 | for (i = 0; | |
3212 | VEC_iterate (probe_p, | |
3213 | bp_objfile_data->longjmp_probes, | |
3214 | i, probe); | |
3215 | ++i) | |
3216 | { | |
3217 | struct breakpoint *b; | |
3218 | ||
3219 | b = create_internal_breakpoint (gdbarch, probe->address, | |
3220 | bp_longjmp_master, | |
3221 | &internal_breakpoint_ops); | |
3222 | b->addr_string = xstrdup ("-probe-stap libc:longjmp"); | |
3223 | b->enable_state = bp_disabled; | |
3224 | } | |
3225 | ||
3226 | continue; | |
3227 | } | |
3228 | ||
17450429 | 3229 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) |
af02033e PP |
3230 | { |
3231 | struct breakpoint *b; | |
af02033e | 3232 | const char *func_name; |
17450429 | 3233 | CORE_ADDR addr; |
6c95b8df | 3234 | |
17450429 | 3235 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i])) |
af02033e | 3236 | continue; |
0fd8e87f | 3237 | |
17450429 PP |
3238 | func_name = longjmp_names[i]; |
3239 | if (bp_objfile_data->longjmp_msym[i] == NULL) | |
3240 | { | |
3241 | struct minimal_symbol *m; | |
3242 | ||
3243 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3244 | if (m == NULL) | |
3245 | { | |
3246 | /* Prevent future lookups in this objfile. */ | |
3247 | bp_objfile_data->longjmp_msym[i] = &msym_not_found; | |
3248 | continue; | |
3249 | } | |
3250 | bp_objfile_data->longjmp_msym[i] = m; | |
3251 | } | |
3252 | ||
3253 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); | |
06edf0c0 PA |
3254 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, |
3255 | &internal_breakpoint_ops); | |
af02033e PP |
3256 | b->addr_string = xstrdup (func_name); |
3257 | b->enable_state = bp_disabled; | |
3258 | } | |
0fd8e87f | 3259 | } |
af02033e | 3260 | } |
0fd8e87f | 3261 | update_global_location_list (1); |
6c95b8df PA |
3262 | |
3263 | do_cleanups (old_chain); | |
0fd8e87f UW |
3264 | } |
3265 | ||
af02033e | 3266 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3267 | static void |
af02033e | 3268 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
3269 | { |
3270 | struct program_space *pspace; | |
aa7d318d | 3271 | struct cleanup *old_chain; |
af02033e | 3272 | const char *const func_name = "std::terminate()"; |
aa7d318d TT |
3273 | |
3274 | old_chain = save_current_program_space (); | |
3275 | ||
3276 | ALL_PSPACES (pspace) | |
17450429 PP |
3277 | { |
3278 | struct objfile *objfile; | |
3279 | CORE_ADDR addr; | |
3280 | ||
3281 | set_current_program_space (pspace); | |
3282 | ||
aa7d318d TT |
3283 | ALL_OBJFILES (objfile) |
3284 | { | |
3285 | struct breakpoint *b; | |
17450429 | 3286 | struct breakpoint_objfile_data *bp_objfile_data; |
aa7d318d | 3287 | |
17450429 | 3288 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3289 | |
17450429 PP |
3290 | if (msym_not_found_p (bp_objfile_data->terminate_msym)) |
3291 | continue; | |
3292 | ||
3293 | if (bp_objfile_data->terminate_msym == NULL) | |
3294 | { | |
3295 | struct minimal_symbol *m; | |
3296 | ||
3297 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
3298 | if (m == NULL || (MSYMBOL_TYPE (m) != mst_text | |
3299 | && MSYMBOL_TYPE (m) != mst_file_text)) | |
3300 | { | |
3301 | /* Prevent future lookups in this objfile. */ | |
3302 | bp_objfile_data->terminate_msym = &msym_not_found; | |
3303 | continue; | |
3304 | } | |
3305 | bp_objfile_data->terminate_msym = m; | |
3306 | } | |
aa7d318d | 3307 | |
17450429 PP |
3308 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
3309 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
06edf0c0 PA |
3310 | bp_std_terminate_master, |
3311 | &internal_breakpoint_ops); | |
aa7d318d TT |
3312 | b->addr_string = xstrdup (func_name); |
3313 | b->enable_state = bp_disabled; | |
3314 | } | |
17450429 PP |
3315 | } |
3316 | ||
aa7d318d TT |
3317 | update_global_location_list (1); |
3318 | ||
3319 | do_cleanups (old_chain); | |
3320 | } | |
3321 | ||
186c406b TT |
3322 | /* Install a master breakpoint on the unwinder's debug hook. */ |
3323 | ||
70221824 | 3324 | static void |
186c406b TT |
3325 | create_exception_master_breakpoint (void) |
3326 | { | |
3327 | struct objfile *objfile; | |
17450429 | 3328 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b TT |
3329 | |
3330 | ALL_OBJFILES (objfile) | |
3331 | { | |
17450429 PP |
3332 | struct breakpoint *b; |
3333 | struct gdbarch *gdbarch; | |
3334 | struct breakpoint_objfile_data *bp_objfile_data; | |
3335 | CORE_ADDR addr; | |
3336 | ||
3337 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
3338 | ||
28106bc2 SDJ |
3339 | /* We prefer the SystemTap probe point if it exists. */ |
3340 | if (!bp_objfile_data->exception_searched) | |
3341 | { | |
3342 | bp_objfile_data->exception_probes | |
3343 | = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
3344 | bp_objfile_data->exception_searched = 1; | |
3345 | } | |
3346 | ||
3347 | if (bp_objfile_data->exception_probes != NULL) | |
3348 | { | |
3349 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3350 | int i; | |
3351 | struct probe *probe; | |
3352 | ||
3353 | for (i = 0; | |
3354 | VEC_iterate (probe_p, | |
3355 | bp_objfile_data->exception_probes, | |
3356 | i, probe); | |
3357 | ++i) | |
3358 | { | |
3359 | struct breakpoint *b; | |
3360 | ||
3361 | b = create_internal_breakpoint (gdbarch, probe->address, | |
3362 | bp_exception_master, | |
3363 | &internal_breakpoint_ops); | |
3364 | b->addr_string = xstrdup ("-probe-stap libgcc:unwind"); | |
3365 | b->enable_state = bp_disabled; | |
3366 | } | |
3367 | ||
3368 | continue; | |
3369 | } | |
3370 | ||
3371 | /* Otherwise, try the hook function. */ | |
3372 | ||
17450429 PP |
3373 | if (msym_not_found_p (bp_objfile_data->exception_msym)) |
3374 | continue; | |
3375 | ||
3376 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 3377 | |
17450429 | 3378 | if (bp_objfile_data->exception_msym == NULL) |
186c406b | 3379 | { |
17450429 | 3380 | struct minimal_symbol *debug_hook; |
186c406b | 3381 | |
17450429 PP |
3382 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
3383 | if (debug_hook == NULL) | |
3384 | { | |
3385 | bp_objfile_data->exception_msym = &msym_not_found; | |
3386 | continue; | |
3387 | } | |
3388 | ||
3389 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 3390 | } |
17450429 PP |
3391 | |
3392 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); | |
3393 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, | |
3394 | ¤t_target); | |
06edf0c0 PA |
3395 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3396 | &internal_breakpoint_ops); | |
17450429 PP |
3397 | b->addr_string = xstrdup (func_name); |
3398 | b->enable_state = bp_disabled; | |
186c406b TT |
3399 | } |
3400 | ||
3401 | update_global_location_list (1); | |
3402 | } | |
3403 | ||
c906108c | 3404 | void |
fba45db2 | 3405 | update_breakpoints_after_exec (void) |
c906108c | 3406 | { |
35df4500 | 3407 | struct breakpoint *b, *b_tmp; |
876fa593 | 3408 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 3409 | |
25b22b0a PA |
3410 | /* We're about to delete breakpoints from GDB's lists. If the |
3411 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3412 | writing the breakpoints' "shadow contents" back into memory. The | |
3413 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3414 | do that. Instead, the target is responsible from marking | |
3415 | breakpoints out as soon as it detects an exec. We don't do that | |
3416 | here instead, because there may be other attempts to delete | |
3417 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 3418 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
3419 | if (bploc->pspace == current_program_space) |
3420 | gdb_assert (!bploc->inserted); | |
c906108c | 3421 | |
35df4500 | 3422 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3423 | { |
6c95b8df PA |
3424 | if (b->pspace != current_program_space) |
3425 | continue; | |
3426 | ||
4a64f543 | 3427 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3428 | if (b->type == bp_shlib_event) |
3429 | { | |
3430 | delete_breakpoint (b); | |
3431 | continue; | |
3432 | } | |
c906108c | 3433 | |
4a64f543 | 3434 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3435 | if (b->type == bp_jit_event) |
3436 | { | |
3437 | delete_breakpoint (b); | |
3438 | continue; | |
3439 | } | |
3440 | ||
1900040c | 3441 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3442 | as must overlay event and longjmp master breakpoints. */ |
3443 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3444 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3445 | || b->type == bp_exception_master) | |
c4093a6a JM |
3446 | { |
3447 | delete_breakpoint (b); | |
3448 | continue; | |
3449 | } | |
3450 | ||
4a64f543 | 3451 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3452 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3453 | { |
3454 | delete_breakpoint (b); | |
3455 | continue; | |
3456 | } | |
3457 | ||
611c83ae PA |
3458 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3459 | after an exec. */ | |
186c406b | 3460 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
e2e4d78b | 3461 | || b->type == bp_longjmp_call_dummy |
186c406b | 3462 | || b->type == bp_exception || b->type == bp_exception_resume) |
611c83ae PA |
3463 | { |
3464 | delete_breakpoint (b); | |
3465 | continue; | |
3466 | } | |
3467 | ||
ce78b96d JB |
3468 | if (b->type == bp_catchpoint) |
3469 | { | |
3470 | /* For now, none of the bp_catchpoint breakpoints need to | |
3471 | do anything at this point. In the future, if some of | |
3472 | the catchpoints need to something, we will need to add | |
3473 | a new method, and call this method from here. */ | |
3474 | continue; | |
3475 | } | |
3476 | ||
c5aa993b JM |
3477 | /* bp_finish is a special case. The only way we ought to be able |
3478 | to see one of these when an exec() has happened, is if the user | |
3479 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3480 | carries them to the call-site of the current callee, by setting | |
3481 | a temporary bp there and resuming. But in this case, the finish | |
3482 | will carry them entirely through the vfork & exec. | |
3483 | ||
3484 | We don't want to allow a bp_finish to remain inserted now. But | |
3485 | we can't safely delete it, 'cause finish_command has a handle to | |
3486 | the bp on a bpstat, and will later want to delete it. There's a | |
3487 | chance (and I've seen it happen) that if we delete the bp_finish | |
3488 | here, that its storage will get reused by the time finish_command | |
3489 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3490 | We really must allow finish_command to delete a bp_finish. | |
3491 | ||
e5dd4106 | 3492 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3493 | it's safe to delete something others may have handles to?" |
3494 | problem, what we'll do here is just uninsert the bp_finish, and | |
3495 | let finish_command delete it. | |
3496 | ||
3497 | (We know the bp_finish is "doomed" in the sense that it's | |
3498 | momentary, and will be deleted as soon as finish_command sees | |
3499 | the inferior stopped. So it doesn't matter that the bp's | |
3500 | address is probably bogus in the new a.out, unlike e.g., the | |
3501 | solib breakpoints.) */ | |
c5aa993b | 3502 | |
c5aa993b JM |
3503 | if (b->type == bp_finish) |
3504 | { | |
3505 | continue; | |
3506 | } | |
3507 | ||
3508 | /* Without a symbolic address, we have little hope of the | |
3509 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3510 | a.out. */ |
c5aa993b JM |
3511 | if (b->addr_string == NULL) |
3512 | { | |
3513 | delete_breakpoint (b); | |
3514 | continue; | |
3515 | } | |
c5aa993b | 3516 | } |
1900040c | 3517 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
af02033e PP |
3518 | create_overlay_event_breakpoint (); |
3519 | create_longjmp_master_breakpoint (); | |
3520 | create_std_terminate_master_breakpoint (); | |
186c406b | 3521 | create_exception_master_breakpoint (); |
c906108c SS |
3522 | } |
3523 | ||
3524 | int | |
d80ee84f | 3525 | detach_breakpoints (ptid_t ptid) |
c906108c | 3526 | { |
35df4500 | 3527 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3528 | int val = 0; |
ce696e05 | 3529 | struct cleanup *old_chain = save_inferior_ptid (); |
6c95b8df | 3530 | struct inferior *inf = current_inferior (); |
c5aa993b | 3531 | |
d80ee84f | 3532 | if (PIDGET (ptid) == PIDGET (inferior_ptid)) |
8a3fe4f8 | 3533 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3534 | |
6c95b8df | 3535 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3536 | inferior_ptid = ptid; |
35df4500 | 3537 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3538 | { |
35df4500 | 3539 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3540 | continue; |
3541 | ||
35df4500 TJB |
3542 | if (bl->inserted) |
3543 | val |= remove_breakpoint_1 (bl, mark_inserted); | |
c5aa993b | 3544 | } |
d03285ec UW |
3545 | |
3546 | /* Detach single-step breakpoints as well. */ | |
3547 | detach_single_step_breakpoints (); | |
3548 | ||
ce696e05 | 3549 | do_cleanups (old_chain); |
3a1bae8e | 3550 | return val; |
c906108c SS |
3551 | } |
3552 | ||
35df4500 | 3553 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3554 | Note that this is used to detach breakpoints from a child fork. |
3555 | When we get here, the child isn't in the inferior list, and neither | |
3556 | do we have objects to represent its address space --- we should | |
35df4500 | 3557 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3558 | |
c906108c | 3559 | static int |
35df4500 | 3560 | remove_breakpoint_1 (struct bp_location *bl, insertion_state_t is) |
c906108c SS |
3561 | { |
3562 | int val; | |
c5aa993b | 3563 | |
35df4500 TJB |
3564 | /* BL is never in moribund_locations by our callers. */ |
3565 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3566 | |
35df4500 | 3567 | if (bl->owner->enable_state == bp_permanent) |
c2c6d25f JM |
3568 | /* Permanent breakpoints cannot be inserted or removed. */ |
3569 | return 0; | |
3570 | ||
74960c60 VP |
3571 | /* The type of none suggests that owner is actually deleted. |
3572 | This should not ever happen. */ | |
35df4500 | 3573 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3574 | |
35df4500 TJB |
3575 | if (bl->loc_type == bp_loc_software_breakpoint |
3576 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3577 | { |
c02f5703 MS |
3578 | /* "Normal" instruction breakpoint: either the standard |
3579 | trap-instruction bp (bp_breakpoint), or a | |
3580 | bp_hardware_breakpoint. */ | |
3581 | ||
3582 | /* First check to see if we have to handle an overlay. */ | |
3583 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3584 | || bl->section == NULL |
3585 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3586 | { |
3587 | /* No overlay handling: just remove the breakpoint. */ | |
348d480f | 3588 | val = bl->owner->ops->remove_location (bl); |
c02f5703 | 3589 | } |
c906108c SS |
3590 | else |
3591 | { | |
4a64f543 | 3592 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3593 | Did we set a breakpoint at the LMA? */ |
3594 | if (!overlay_events_enabled) | |
3595 | { | |
3596 | /* Yes -- overlay event support is not active, so we | |
3597 | should have set a breakpoint at the LMA. Remove it. | |
3598 | */ | |
c02f5703 MS |
3599 | /* Ignore any failures: if the LMA is in ROM, we will |
3600 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3601 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3602 | target_remove_hw_breakpoint (bl->gdbarch, | |
3603 | &bl->overlay_target_info); | |
c02f5703 | 3604 | else |
35df4500 TJB |
3605 | target_remove_breakpoint (bl->gdbarch, |
3606 | &bl->overlay_target_info); | |
c02f5703 MS |
3607 | } |
3608 | /* Did we set a breakpoint at the VMA? | |
3609 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3610 | if (bl->inserted) |
c906108c | 3611 | { |
c02f5703 MS |
3612 | /* Yes -- remove it. Previously we did not bother to |
3613 | remove the breakpoint if the section had been | |
3614 | unmapped, but let's not rely on that being safe. We | |
3615 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3616 | |
3617 | /* However, we should remove *software* breakpoints only | |
3618 | if the section is still mapped, or else we overwrite | |
3619 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3620 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3621 | || section_is_mapped (bl->section)) | |
3622 | val = bl->owner->ops->remove_location (bl); | |
aa67235e UW |
3623 | else |
3624 | val = 0; | |
c906108c | 3625 | } |
c02f5703 MS |
3626 | else |
3627 | { | |
3628 | /* No -- not inserted, so no need to remove. No error. */ | |
3629 | val = 0; | |
3630 | } | |
c906108c | 3631 | } |
879d1e6b UW |
3632 | |
3633 | /* In some cases, we might not be able to remove a breakpoint | |
3634 | in a shared library that has already been removed, but we | |
3635 | have not yet processed the shlib unload event. */ | |
35df4500 | 3636 | if (val && solib_name_from_address (bl->pspace, bl->address)) |
879d1e6b UW |
3637 | val = 0; |
3638 | ||
c906108c SS |
3639 | if (val) |
3640 | return val; | |
35df4500 | 3641 | bl->inserted = (is == mark_inserted); |
c906108c | 3642 | } |
35df4500 | 3643 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3644 | { |
77b06cd7 TJB |
3645 | gdb_assert (bl->owner->ops != NULL |
3646 | && bl->owner->ops->remove_location != NULL); | |
3647 | ||
35df4500 | 3648 | bl->inserted = (is == mark_inserted); |
77b06cd7 | 3649 | bl->owner->ops->remove_location (bl); |
2e70b7b9 | 3650 | |
c906108c | 3651 | /* Failure to remove any of the hardware watchpoints comes here. */ |
35df4500 | 3652 | if ((is == mark_uninserted) && (bl->inserted)) |
8a3fe4f8 | 3653 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3654 | bl->owner->number); |
c906108c | 3655 | } |
35df4500 TJB |
3656 | else if (bl->owner->type == bp_catchpoint |
3657 | && breakpoint_enabled (bl->owner) | |
3658 | && !bl->duplicate) | |
ce78b96d | 3659 | { |
77b06cd7 TJB |
3660 | gdb_assert (bl->owner->ops != NULL |
3661 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 3662 | |
77b06cd7 | 3663 | val = bl->owner->ops->remove_location (bl); |
ce78b96d JB |
3664 | if (val) |
3665 | return val; | |
77b06cd7 | 3666 | |
35df4500 | 3667 | bl->inserted = (is == mark_inserted); |
ce78b96d | 3668 | } |
c906108c SS |
3669 | |
3670 | return 0; | |
3671 | } | |
3672 | ||
6c95b8df | 3673 | static int |
35df4500 | 3674 | remove_breakpoint (struct bp_location *bl, insertion_state_t is) |
6c95b8df PA |
3675 | { |
3676 | int ret; | |
3677 | struct cleanup *old_chain; | |
3678 | ||
35df4500 TJB |
3679 | /* BL is never in moribund_locations by our callers. */ |
3680 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3681 | |
35df4500 | 3682 | if (bl->owner->enable_state == bp_permanent) |
6c95b8df PA |
3683 | /* Permanent breakpoints cannot be inserted or removed. */ |
3684 | return 0; | |
3685 | ||
3686 | /* The type of none suggests that owner is actually deleted. | |
3687 | This should not ever happen. */ | |
35df4500 | 3688 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df PA |
3689 | |
3690 | old_chain = save_current_space_and_thread (); | |
3691 | ||
35df4500 | 3692 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 3693 | |
35df4500 | 3694 | ret = remove_breakpoint_1 (bl, is); |
6c95b8df PA |
3695 | |
3696 | do_cleanups (old_chain); | |
3697 | return ret; | |
3698 | } | |
3699 | ||
c906108c SS |
3700 | /* Clear the "inserted" flag in all breakpoints. */ |
3701 | ||
25b22b0a | 3702 | void |
fba45db2 | 3703 | mark_breakpoints_out (void) |
c906108c | 3704 | { |
35df4500 | 3705 | struct bp_location *bl, **blp_tmp; |
c906108c | 3706 | |
35df4500 TJB |
3707 | ALL_BP_LOCATIONS (bl, blp_tmp) |
3708 | if (bl->pspace == current_program_space) | |
3709 | bl->inserted = 0; | |
c906108c SS |
3710 | } |
3711 | ||
53a5351d JM |
3712 | /* Clear the "inserted" flag in all breakpoints and delete any |
3713 | breakpoints which should go away between runs of the program. | |
c906108c SS |
3714 | |
3715 | Plus other such housekeeping that has to be done for breakpoints | |
3716 | between runs. | |
3717 | ||
53a5351d JM |
3718 | Note: this function gets called at the end of a run (by |
3719 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 3720 | init_wait_for_inferior). */ |
c906108c SS |
3721 | |
3722 | ||
3723 | ||
3724 | void | |
fba45db2 | 3725 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 3726 | { |
35df4500 TJB |
3727 | struct breakpoint *b, *b_tmp; |
3728 | struct bp_location *bl, **blp_tmp; | |
1c5cfe86 | 3729 | int ix; |
6c95b8df | 3730 | struct program_space *pspace = current_program_space; |
c906108c | 3731 | |
50c71eaf PA |
3732 | /* If breakpoint locations are shared across processes, then there's |
3733 | nothing to do. */ | |
2567c7d9 | 3734 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
3735 | return; |
3736 | ||
35df4500 | 3737 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 3738 | { |
35df4500 TJB |
3739 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
3740 | if (bl->pspace == pspace | |
3741 | && bl->owner->enable_state != bp_permanent) | |
3742 | bl->inserted = 0; | |
6c95b8df | 3743 | } |
075f6582 | 3744 | |
35df4500 | 3745 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3746 | { |
6c95b8df PA |
3747 | if (b->loc && b->loc->pspace != pspace) |
3748 | continue; | |
3749 | ||
c5aa993b JM |
3750 | switch (b->type) |
3751 | { | |
3752 | case bp_call_dummy: | |
e2e4d78b | 3753 | case bp_longjmp_call_dummy: |
c906108c | 3754 | |
c5aa993b | 3755 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
3756 | cause problems when the inferior is rerun, so we better get |
3757 | rid of it. */ | |
3758 | ||
3759 | case bp_watchpoint_scope: | |
3760 | ||
3761 | /* Also get rid of scope breakpoints. */ | |
3762 | ||
3763 | case bp_shlib_event: | |
3764 | ||
3765 | /* Also remove solib event breakpoints. Their addresses may | |
3766 | have changed since the last time we ran the program. | |
3767 | Actually we may now be debugging against different target; | |
3768 | and so the solib backend that installed this breakpoint may | |
3769 | not be used in by the target. E.g., | |
3770 | ||
3771 | (gdb) file prog-linux | |
3772 | (gdb) run # native linux target | |
3773 | ... | |
3774 | (gdb) kill | |
3775 | (gdb) file prog-win.exe | |
3776 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
3777 | */ | |
c906108c | 3778 | |
f59f708a PA |
3779 | case bp_step_resume: |
3780 | ||
3781 | /* Also remove step-resume breakpoints. */ | |
3782 | ||
c5aa993b JM |
3783 | delete_breakpoint (b); |
3784 | break; | |
c906108c | 3785 | |
c5aa993b JM |
3786 | case bp_watchpoint: |
3787 | case bp_hardware_watchpoint: | |
3788 | case bp_read_watchpoint: | |
3789 | case bp_access_watchpoint: | |
3a5c3e22 PA |
3790 | { |
3791 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 3792 | |
3a5c3e22 PA |
3793 | /* Likewise for watchpoints on local expressions. */ |
3794 | if (w->exp_valid_block != NULL) | |
3795 | delete_breakpoint (b); | |
3796 | else if (context == inf_starting) | |
3797 | { | |
3798 | /* Reset val field to force reread of starting value in | |
3799 | insert_breakpoints. */ | |
3800 | if (w->val) | |
3801 | value_free (w->val); | |
3802 | w->val = NULL; | |
3803 | w->val_valid = 0; | |
c860120c | 3804 | } |
3a5c3e22 | 3805 | } |
c5aa993b JM |
3806 | break; |
3807 | default: | |
c5aa993b JM |
3808 | break; |
3809 | } | |
3810 | } | |
1c5cfe86 PA |
3811 | |
3812 | /* Get rid of the moribund locations. */ | |
35df4500 TJB |
3813 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix) |
3814 | decref_bp_location (&bl); | |
1c5cfe86 | 3815 | VEC_free (bp_location_p, moribund_locations); |
c906108c SS |
3816 | } |
3817 | ||
6c95b8df PA |
3818 | /* These functions concern about actual breakpoints inserted in the |
3819 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
3820 | we need to hop over the bkpt --- so we check for address space | |
3821 | match, not program space. */ | |
3822 | ||
c2c6d25f JM |
3823 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
3824 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
3825 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
3826 | permanent breakpoint. | |
3827 | - When continuing from a location with an ordinary breakpoint, we | |
3828 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 3829 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
3830 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
3831 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 3832 | |
c2c6d25f | 3833 | enum breakpoint_here |
6c95b8df | 3834 | breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 3835 | { |
35df4500 | 3836 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 3837 | int any_breakpoint_here = 0; |
c906108c | 3838 | |
35df4500 | 3839 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 3840 | { |
35df4500 TJB |
3841 | if (bl->loc_type != bp_loc_software_breakpoint |
3842 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3843 | continue; |
3844 | ||
f1310107 | 3845 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 TJB |
3846 | if ((breakpoint_enabled (bl->owner) |
3847 | || bl->owner->enable_state == bp_permanent) | |
f1310107 | 3848 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
3849 | { |
3850 | if (overlay_debugging | |
35df4500 TJB |
3851 | && section_is_overlay (bl->section) |
3852 | && !section_is_mapped (bl->section)) | |
075f6582 | 3853 | continue; /* unmapped overlay -- can't be a match */ |
35df4500 | 3854 | else if (bl->owner->enable_state == bp_permanent) |
075f6582 DJ |
3855 | return permanent_breakpoint_here; |
3856 | else | |
3857 | any_breakpoint_here = 1; | |
3858 | } | |
3859 | } | |
c906108c | 3860 | |
c2c6d25f | 3861 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
3862 | } |
3863 | ||
1c5cfe86 PA |
3864 | /* Return true if there's a moribund breakpoint at PC. */ |
3865 | ||
3866 | int | |
6c95b8df | 3867 | moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
3868 | { |
3869 | struct bp_location *loc; | |
3870 | int ix; | |
3871 | ||
3872 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
f1310107 | 3873 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
3874 | return 1; |
3875 | ||
3876 | return 0; | |
3877 | } | |
c2c6d25f | 3878 | |
c36b740a | 3879 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
4a64f543 MS |
3880 | inserted using regular breakpoint_chain / bp_location array |
3881 | mechanism. This does not check for single-step breakpoints, which | |
3882 | are inserted and removed using direct target manipulation. */ | |
c906108c SS |
3883 | |
3884 | int | |
4a64f543 MS |
3885 | regular_breakpoint_inserted_here_p (struct address_space *aspace, |
3886 | CORE_ADDR pc) | |
c906108c | 3887 | { |
35df4500 | 3888 | struct bp_location *bl, **blp_tmp; |
c906108c | 3889 | |
35df4500 | 3890 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3891 | { |
35df4500 TJB |
3892 | if (bl->loc_type != bp_loc_software_breakpoint |
3893 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3894 | continue; |
3895 | ||
35df4500 | 3896 | if (bl->inserted |
f1310107 | 3897 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
3898 | { |
3899 | if (overlay_debugging | |
35df4500 TJB |
3900 | && section_is_overlay (bl->section) |
3901 | && !section_is_mapped (bl->section)) | |
075f6582 DJ |
3902 | continue; /* unmapped overlay -- can't be a match */ |
3903 | else | |
3904 | return 1; | |
3905 | } | |
c5aa993b | 3906 | } |
c36b740a VP |
3907 | return 0; |
3908 | } | |
3909 | ||
3910 | /* Returns non-zero iff there's either regular breakpoint | |
3911 | or a single step breakpoint inserted at PC. */ | |
3912 | ||
3913 | int | |
6c95b8df | 3914 | breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c36b740a | 3915 | { |
6c95b8df | 3916 | if (regular_breakpoint_inserted_here_p (aspace, pc)) |
c36b740a | 3917 | return 1; |
c906108c | 3918 | |
6c95b8df | 3919 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
3920 | return 1; |
3921 | ||
c906108c SS |
3922 | return 0; |
3923 | } | |
3924 | ||
4fa8626c DJ |
3925 | /* This function returns non-zero iff there is a software breakpoint |
3926 | inserted at PC. */ | |
3927 | ||
3928 | int | |
3e43a32a MS |
3929 | software_breakpoint_inserted_here_p (struct address_space *aspace, |
3930 | CORE_ADDR pc) | |
4fa8626c | 3931 | { |
35df4500 | 3932 | struct bp_location *bl, **blp_tmp; |
4fa8626c | 3933 | |
35df4500 | 3934 | ALL_BP_LOCATIONS (bl, blp_tmp) |
4fa8626c | 3935 | { |
35df4500 | 3936 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
3937 | continue; |
3938 | ||
35df4500 TJB |
3939 | if (bl->inserted |
3940 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6c95b8df | 3941 | aspace, pc)) |
4fa8626c DJ |
3942 | { |
3943 | if (overlay_debugging | |
35df4500 TJB |
3944 | && section_is_overlay (bl->section) |
3945 | && !section_is_mapped (bl->section)) | |
4fa8626c DJ |
3946 | continue; /* unmapped overlay -- can't be a match */ |
3947 | else | |
3948 | return 1; | |
3949 | } | |
3950 | } | |
3951 | ||
1aafd4da | 3952 | /* Also check for software single-step breakpoints. */ |
6c95b8df | 3953 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
3954 | return 1; |
3955 | ||
4fa8626c DJ |
3956 | return 0; |
3957 | } | |
3958 | ||
9093389c PA |
3959 | int |
3960 | hardware_watchpoint_inserted_in_range (struct address_space *aspace, | |
3961 | CORE_ADDR addr, ULONGEST len) | |
3962 | { | |
3963 | struct breakpoint *bpt; | |
3964 | ||
3965 | ALL_BREAKPOINTS (bpt) | |
3966 | { | |
3967 | struct bp_location *loc; | |
3968 | ||
3969 | if (bpt->type != bp_hardware_watchpoint | |
3970 | && bpt->type != bp_access_watchpoint) | |
3971 | continue; | |
3972 | ||
3973 | if (!breakpoint_enabled (bpt)) | |
3974 | continue; | |
3975 | ||
3976 | for (loc = bpt->loc; loc; loc = loc->next) | |
3977 | if (loc->pspace->aspace == aspace && loc->inserted) | |
3978 | { | |
3979 | CORE_ADDR l, h; | |
3980 | ||
3981 | /* Check for intersection. */ | |
3982 | l = max (loc->address, addr); | |
3983 | h = min (loc->address + loc->length, addr + len); | |
3984 | if (l < h) | |
3985 | return 1; | |
3986 | } | |
3987 | } | |
3988 | return 0; | |
3989 | } | |
3990 | ||
075f6582 DJ |
3991 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
3992 | PC is valid for process/thread PTID. */ | |
c906108c SS |
3993 | |
3994 | int | |
6c95b8df PA |
3995 | breakpoint_thread_match (struct address_space *aspace, CORE_ADDR pc, |
3996 | ptid_t ptid) | |
c906108c | 3997 | { |
35df4500 | 3998 | struct bp_location *bl, **blp_tmp; |
4a306c9a | 3999 | /* The thread and task IDs associated to PTID, computed lazily. */ |
a6f1cd96 | 4000 | int thread = -1; |
4a306c9a | 4001 | int task = 0; |
a6f1cd96 | 4002 | |
35df4500 | 4003 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 4004 | { |
35df4500 TJB |
4005 | if (bl->loc_type != bp_loc_software_breakpoint |
4006 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4007 | continue; |
4008 | ||
35df4500 TJB |
4009 | /* ALL_BP_LOCATIONS bp_location has bl->OWNER always non-NULL. */ |
4010 | if (!breakpoint_enabled (bl->owner) | |
4011 | && bl->owner->enable_state != bp_permanent) | |
a6f1cd96 JB |
4012 | continue; |
4013 | ||
f1310107 | 4014 | if (!breakpoint_location_address_match (bl, aspace, pc)) |
a6f1cd96 JB |
4015 | continue; |
4016 | ||
35df4500 | 4017 | if (bl->owner->thread != -1) |
075f6582 | 4018 | { |
a6f1cd96 JB |
4019 | /* This is a thread-specific breakpoint. Check that ptid |
4020 | matches that thread. If thread hasn't been computed yet, | |
4021 | it is now time to do so. */ | |
4022 | if (thread == -1) | |
4023 | thread = pid_to_thread_id (ptid); | |
35df4500 | 4024 | if (bl->owner->thread != thread) |
a6f1cd96 | 4025 | continue; |
075f6582 | 4026 | } |
a6f1cd96 | 4027 | |
35df4500 | 4028 | if (bl->owner->task != 0) |
4a306c9a JB |
4029 | { |
4030 | /* This is a task-specific breakpoint. Check that ptid | |
4031 | matches that task. If task hasn't been computed yet, | |
4032 | it is now time to do so. */ | |
4033 | if (task == 0) | |
4034 | task = ada_get_task_number (ptid); | |
35df4500 | 4035 | if (bl->owner->task != task) |
4a306c9a JB |
4036 | continue; |
4037 | } | |
4038 | ||
a6f1cd96 | 4039 | if (overlay_debugging |
35df4500 TJB |
4040 | && section_is_overlay (bl->section) |
4041 | && !section_is_mapped (bl->section)) | |
a6f1cd96 JB |
4042 | continue; /* unmapped overlay -- can't be a match */ |
4043 | ||
4044 | return 1; | |
c5aa993b | 4045 | } |
c906108c SS |
4046 | |
4047 | return 0; | |
4048 | } | |
c906108c | 4049 | \f |
c5aa993b | 4050 | |
c906108c SS |
4051 | /* bpstat stuff. External routines' interfaces are documented |
4052 | in breakpoint.h. */ | |
4053 | ||
4054 | int | |
c326b90e | 4055 | is_catchpoint (struct breakpoint *ep) |
c906108c | 4056 | { |
533be4dd | 4057 | return (ep->type == bp_catchpoint); |
c906108c SS |
4058 | } |
4059 | ||
f431efe5 PA |
4060 | /* Frees any storage that is part of a bpstat. Does not walk the |
4061 | 'next' chain. */ | |
4062 | ||
4063 | static void | |
198757a8 VP |
4064 | bpstat_free (bpstat bs) |
4065 | { | |
4066 | if (bs->old_val != NULL) | |
4067 | value_free (bs->old_val); | |
9add0f1b | 4068 | decref_counted_command_line (&bs->commands); |
f431efe5 | 4069 | decref_bp_location (&bs->bp_location_at); |
198757a8 VP |
4070 | xfree (bs); |
4071 | } | |
4072 | ||
c906108c SS |
4073 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4074 | Also free any storage that is part of a bpstat. */ | |
4075 | ||
4076 | void | |
fba45db2 | 4077 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4078 | { |
4079 | bpstat p; | |
4080 | bpstat q; | |
4081 | ||
4082 | if (bsp == 0) | |
4083 | return; | |
4084 | p = *bsp; | |
4085 | while (p != NULL) | |
4086 | { | |
4087 | q = p->next; | |
198757a8 | 4088 | bpstat_free (p); |
c906108c SS |
4089 | p = q; |
4090 | } | |
4091 | *bsp = NULL; | |
4092 | } | |
4093 | ||
4094 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
4095 | is part of the bpstat is copied as well. */ | |
4096 | ||
4097 | bpstat | |
fba45db2 | 4098 | bpstat_copy (bpstat bs) |
c906108c SS |
4099 | { |
4100 | bpstat p = NULL; | |
4101 | bpstat tmp; | |
4102 | bpstat retval = NULL; | |
4103 | ||
4104 | if (bs == NULL) | |
4105 | return bs; | |
4106 | ||
4107 | for (; bs != NULL; bs = bs->next) | |
4108 | { | |
4109 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
4110 | memcpy (tmp, bs, sizeof (*tmp)); | |
9add0f1b | 4111 | incref_counted_command_line (tmp->commands); |
f431efe5 | 4112 | incref_bp_location (tmp->bp_location_at); |
31cc81e9 | 4113 | if (bs->old_val != NULL) |
3c3185ac JK |
4114 | { |
4115 | tmp->old_val = value_copy (bs->old_val); | |
4116 | release_value (tmp->old_val); | |
4117 | } | |
31cc81e9 | 4118 | |
c906108c SS |
4119 | if (p == NULL) |
4120 | /* This is the first thing in the chain. */ | |
4121 | retval = tmp; | |
4122 | else | |
4123 | p->next = tmp; | |
4124 | p = tmp; | |
4125 | } | |
4126 | p->next = NULL; | |
4127 | return retval; | |
4128 | } | |
4129 | ||
4a64f543 | 4130 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4131 | |
4132 | bpstat | |
fba45db2 | 4133 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4134 | { |
c5aa993b JM |
4135 | if (bsp == NULL) |
4136 | return NULL; | |
c906108c | 4137 | |
c5aa993b JM |
4138 | for (; bsp != NULL; bsp = bsp->next) |
4139 | { | |
f431efe5 | 4140 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4141 | return bsp; |
4142 | } | |
c906108c SS |
4143 | return NULL; |
4144 | } | |
4145 | ||
4a64f543 MS |
4146 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4147 | stopped at. *BSP upon return is a bpstat which points to the | |
4148 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4149 | good for anything but further calls to bpstat_num). | |
4150 | ||
8671a17b PA |
4151 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4152 | Return -1 if stopped at a breakpoint that has been deleted since | |
4153 | we set it. | |
4154 | Return 1 otherwise. */ | |
c906108c SS |
4155 | |
4156 | int | |
8671a17b | 4157 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4158 | { |
4159 | struct breakpoint *b; | |
4160 | ||
4161 | if ((*bsp) == NULL) | |
4162 | return 0; /* No more breakpoint values */ | |
8671a17b | 4163 | |
4a64f543 MS |
4164 | /* We assume we'll never have several bpstats that correspond to a |
4165 | single breakpoint -- otherwise, this function might return the | |
4166 | same number more than once and this will look ugly. */ | |
f431efe5 | 4167 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4168 | *bsp = (*bsp)->next; |
4169 | if (b == NULL) | |
4170 | return -1; /* breakpoint that's been deleted since */ | |
4171 | ||
4172 | *num = b->number; /* We have its number */ | |
4173 | return 1; | |
c906108c SS |
4174 | } |
4175 | ||
e93ca019 | 4176 | /* See breakpoint.h. */ |
c906108c SS |
4177 | |
4178 | void | |
e93ca019 | 4179 | bpstat_clear_actions (void) |
c906108c | 4180 | { |
e93ca019 JK |
4181 | struct thread_info *tp; |
4182 | bpstat bs; | |
4183 | ||
4184 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4185 | return; | |
4186 | ||
4187 | tp = find_thread_ptid (inferior_ptid); | |
4188 | if (tp == NULL) | |
4189 | return; | |
4190 | ||
4191 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) | |
c906108c | 4192 | { |
9add0f1b | 4193 | decref_counted_command_line (&bs->commands); |
abf85f46 | 4194 | |
c906108c SS |
4195 | if (bs->old_val != NULL) |
4196 | { | |
4197 | value_free (bs->old_val); | |
4198 | bs->old_val = NULL; | |
4199 | } | |
4200 | } | |
4201 | } | |
4202 | ||
f3b1572e PA |
4203 | /* Called when a command is about to proceed the inferior. */ |
4204 | ||
4205 | static void | |
4206 | breakpoint_about_to_proceed (void) | |
4207 | { | |
4208 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
4209 | { | |
4210 | struct thread_info *tp = inferior_thread (); | |
4211 | ||
4212 | /* Allow inferior function calls in breakpoint commands to not | |
4213 | interrupt the command list. When the call finishes | |
4214 | successfully, the inferior will be standing at the same | |
4215 | breakpoint as if nothing happened. */ | |
16c381f0 | 4216 | if (tp->control.in_infcall) |
f3b1572e PA |
4217 | return; |
4218 | } | |
4219 | ||
4220 | breakpoint_proceeded = 1; | |
4221 | } | |
4222 | ||
4a64f543 MS |
4223 | /* Stub for cleaning up our state if we error-out of a breakpoint |
4224 | command. */ | |
c906108c | 4225 | static void |
4efb68b1 | 4226 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
4227 | { |
4228 | executing_breakpoint_commands = 0; | |
4229 | } | |
4230 | ||
abf85f46 JK |
4231 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4232 | or its equivalent. */ | |
4233 | ||
4234 | static int | |
4235 | command_line_is_silent (struct command_line *cmd) | |
4236 | { | |
4237 | return cmd && (strcmp ("silent", cmd->line) == 0 | |
4238 | || (xdb_commands && strcmp ("Q", cmd->line) == 0)); | |
4239 | } | |
4240 | ||
4a64f543 MS |
4241 | /* Execute all the commands associated with all the breakpoints at |
4242 | this location. Any of these commands could cause the process to | |
4243 | proceed beyond this point, etc. We look out for such changes by | |
4244 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4245 | |
347bddb7 PA |
4246 | Returns true if a breakpoint command resumed the inferior. In that |
4247 | case, it is the caller's responsibility to recall it again with the | |
4248 | bpstat of the current thread. */ | |
4249 | ||
4250 | static int | |
4251 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4252 | { |
4253 | bpstat bs; | |
4254 | struct cleanup *old_chain; | |
347bddb7 | 4255 | int again = 0; |
c906108c SS |
4256 | |
4257 | /* Avoid endless recursion if a `source' command is contained | |
4258 | in bs->commands. */ | |
4259 | if (executing_breakpoint_commands) | |
347bddb7 | 4260 | return 0; |
c906108c SS |
4261 | |
4262 | executing_breakpoint_commands = 1; | |
4263 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
4264 | ||
cf6c5ffb TT |
4265 | prevent_dont_repeat (); |
4266 | ||
4a64f543 | 4267 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4268 | bs = *bsp; |
4269 | ||
4270 | breakpoint_proceeded = 0; | |
4271 | for (; bs != NULL; bs = bs->next) | |
4272 | { | |
9add0f1b | 4273 | struct counted_command_line *ccmd; |
6c50ab1c JB |
4274 | struct command_line *cmd; |
4275 | struct cleanup *this_cmd_tree_chain; | |
4276 | ||
4277 | /* Take ownership of the BSP's command tree, if it has one. | |
4278 | ||
4279 | The command tree could legitimately contain commands like | |
4280 | 'step' and 'next', which call clear_proceed_status, which | |
4281 | frees stop_bpstat's command tree. To make sure this doesn't | |
4282 | free the tree we're executing out from under us, we need to | |
4283 | take ownership of the tree ourselves. Since a given bpstat's | |
4284 | commands are only executed once, we don't need to copy it; we | |
4285 | can clear the pointer in the bpstat, and make sure we free | |
4286 | the tree when we're done. */ | |
9add0f1b TT |
4287 | ccmd = bs->commands; |
4288 | bs->commands = NULL; | |
abf85f46 JK |
4289 | this_cmd_tree_chain = make_cleanup_decref_counted_command_line (&ccmd); |
4290 | cmd = ccmd ? ccmd->commands : NULL; | |
4291 | if (command_line_is_silent (cmd)) | |
4292 | { | |
4293 | /* The action has been already done by bpstat_stop_status. */ | |
4294 | cmd = cmd->next; | |
4295 | } | |
6c50ab1c | 4296 | |
c906108c SS |
4297 | while (cmd != NULL) |
4298 | { | |
4299 | execute_control_command (cmd); | |
4300 | ||
4301 | if (breakpoint_proceeded) | |
4302 | break; | |
4303 | else | |
4304 | cmd = cmd->next; | |
4305 | } | |
6c50ab1c JB |
4306 | |
4307 | /* We can free this command tree now. */ | |
4308 | do_cleanups (this_cmd_tree_chain); | |
4309 | ||
c906108c | 4310 | if (breakpoint_proceeded) |
32c1e744 VP |
4311 | { |
4312 | if (target_can_async_p ()) | |
347bddb7 PA |
4313 | /* If we are in async mode, then the target might be still |
4314 | running, not stopped at any breakpoint, so nothing for | |
4315 | us to do here -- just return to the event loop. */ | |
4316 | ; | |
32c1e744 VP |
4317 | else |
4318 | /* In sync mode, when execute_control_command returns | |
4319 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4320 | Breakpoint commands for that stop were not run, since |
4321 | execute_command does not run breakpoint commands -- | |
4322 | only command_line_handler does, but that one is not | |
4323 | involved in execution of breakpoint commands. So, we | |
4324 | can now execute breakpoint commands. It should be | |
4325 | noted that making execute_command do bpstat actions is | |
4326 | not an option -- in this case we'll have recursive | |
4327 | invocation of bpstat for each breakpoint with a | |
4328 | command, and can easily blow up GDB stack. Instead, we | |
4329 | return true, which will trigger the caller to recall us | |
4330 | with the new stop_bpstat. */ | |
4331 | again = 1; | |
4332 | break; | |
32c1e744 | 4333 | } |
c906108c | 4334 | } |
c2b8ed2c | 4335 | do_cleanups (old_chain); |
347bddb7 PA |
4336 | return again; |
4337 | } | |
4338 | ||
4339 | void | |
4340 | bpstat_do_actions (void) | |
4341 | { | |
353d1d73 JK |
4342 | struct cleanup *cleanup_if_error = make_bpstat_clear_actions_cleanup (); |
4343 | ||
347bddb7 PA |
4344 | /* Do any commands attached to breakpoint we are stopped at. */ |
4345 | while (!ptid_equal (inferior_ptid, null_ptid) | |
4346 | && target_has_execution | |
4347 | && !is_exited (inferior_ptid) | |
4348 | && !is_executing (inferior_ptid)) | |
4349 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
4350 | and only return when it is stopped at the next breakpoint, we | |
4351 | keep doing breakpoint actions until it returns false to | |
4352 | indicate the inferior was not resumed. */ | |
16c381f0 | 4353 | if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) |
347bddb7 | 4354 | break; |
353d1d73 JK |
4355 | |
4356 | discard_cleanups (cleanup_if_error); | |
c906108c SS |
4357 | } |
4358 | ||
fa4727a6 DJ |
4359 | /* Print out the (old or new) value associated with a watchpoint. */ |
4360 | ||
4361 | static void | |
4362 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4363 | { | |
4364 | if (val == NULL) | |
4365 | fprintf_unfiltered (stream, _("<unreadable>")); | |
4366 | else | |
79a45b7d TT |
4367 | { |
4368 | struct value_print_options opts; | |
4369 | get_user_print_options (&opts); | |
4370 | value_print (val, stream, &opts); | |
4371 | } | |
fa4727a6 DJ |
4372 | } |
4373 | ||
e514a9d6 | 4374 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4375 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4376 | 'print_it' in the bpstat structure. Under some circumstances we |
4377 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4378 | normal_stop(). */ |
e514a9d6 JM |
4379 | |
4380 | static enum print_stop_action | |
4381 | print_bp_stop_message (bpstat bs) | |
4382 | { | |
4383 | switch (bs->print_it) | |
4384 | { | |
4385 | case print_it_noop: | |
4a64f543 | 4386 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4387 | return PRINT_UNKNOWN; |
4388 | break; | |
4389 | ||
4390 | case print_it_done: | |
4391 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 4392 | relevant messages. */ |
e514a9d6 JM |
4393 | return PRINT_SRC_AND_LOC; |
4394 | break; | |
4395 | ||
4396 | case print_it_normal: | |
4f8d1dc6 | 4397 | { |
f431efe5 PA |
4398 | struct breakpoint *b = bs->breakpoint_at; |
4399 | ||
1a6a67de TJB |
4400 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4401 | which has since been deleted. */ | |
4402 | if (b == NULL) | |
4403 | return PRINT_UNKNOWN; | |
4404 | ||
348d480f PA |
4405 | /* Normal case. Call the breakpoint's print_it method. */ |
4406 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4407 | } |
348d480f | 4408 | break; |
3086aeae | 4409 | |
e514a9d6 | 4410 | default: |
8e65ff28 | 4411 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4412 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4413 | break; |
c906108c | 4414 | } |
c906108c SS |
4415 | } |
4416 | ||
edcc5120 TT |
4417 | /* A helper function that prints a shared library stopped event. */ |
4418 | ||
4419 | static void | |
4420 | print_solib_event (int is_catchpoint) | |
4421 | { | |
4422 | int any_deleted | |
4423 | = !VEC_empty (char_ptr, current_program_space->deleted_solibs); | |
4424 | int any_added | |
4425 | = !VEC_empty (so_list_ptr, current_program_space->added_solibs); | |
4426 | ||
4427 | if (!is_catchpoint) | |
4428 | { | |
4429 | if (any_added || any_deleted) | |
4430 | ui_out_text (current_uiout, | |
4431 | _("Stopped due to shared library event:\n")); | |
4432 | else | |
4433 | ui_out_text (current_uiout, | |
4434 | _("Stopped due to shared library event (no " | |
4435 | "libraries added or removed)\n")); | |
4436 | } | |
4437 | ||
4438 | if (ui_out_is_mi_like_p (current_uiout)) | |
4439 | ui_out_field_string (current_uiout, "reason", | |
4440 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
4441 | ||
4442 | if (any_deleted) | |
4443 | { | |
4444 | struct cleanup *cleanup; | |
4445 | char *name; | |
4446 | int ix; | |
4447 | ||
4448 | ui_out_text (current_uiout, _(" Inferior unloaded ")); | |
4449 | cleanup = make_cleanup_ui_out_list_begin_end (current_uiout, | |
4450 | "removed"); | |
4451 | for (ix = 0; | |
4452 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
4453 | ix, name); | |
4454 | ++ix) | |
4455 | { | |
4456 | if (ix > 0) | |
4457 | ui_out_text (current_uiout, " "); | |
4458 | ui_out_field_string (current_uiout, "library", name); | |
4459 | ui_out_text (current_uiout, "\n"); | |
4460 | } | |
4461 | ||
4462 | do_cleanups (cleanup); | |
4463 | } | |
4464 | ||
4465 | if (any_added) | |
4466 | { | |
4467 | struct so_list *iter; | |
4468 | int ix; | |
4469 | struct cleanup *cleanup; | |
4470 | ||
4471 | ui_out_text (current_uiout, _(" Inferior loaded ")); | |
4472 | cleanup = make_cleanup_ui_out_list_begin_end (current_uiout, | |
4473 | "added"); | |
4474 | for (ix = 0; | |
4475 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
4476 | ix, iter); | |
4477 | ++ix) | |
4478 | { | |
4479 | if (ix > 0) | |
4480 | ui_out_text (current_uiout, " "); | |
4481 | ui_out_field_string (current_uiout, "library", iter->so_name); | |
4482 | ui_out_text (current_uiout, "\n"); | |
4483 | } | |
4484 | ||
4485 | do_cleanups (cleanup); | |
4486 | } | |
4487 | } | |
4488 | ||
e514a9d6 JM |
4489 | /* Print a message indicating what happened. This is called from |
4490 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4491 | list - a list of the eventpoints that caused this stop. KIND is |
4492 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4493 | routine calls the generic print routine for printing a message |
4494 | about reasons for stopping. This will print (for example) the | |
4495 | "Breakpoint n," part of the output. The return value of this | |
4496 | routine is one of: | |
c906108c | 4497 | |
4a64f543 | 4498 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4499 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4500 | code to print the location. An example is |
c5aa993b JM |
4501 | "Breakpoint 1, " which should be followed by |
4502 | the location. | |
917317f4 | 4503 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4504 | to also print the location part of the message. |
4505 | An example is the catch/throw messages, which | |
4a64f543 | 4506 | don't require a location appended to the end. |
917317f4 | 4507 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4508 | further info to be printed. */ |
c906108c | 4509 | |
917317f4 | 4510 | enum print_stop_action |
36dfb11c | 4511 | bpstat_print (bpstat bs, int kind) |
c906108c SS |
4512 | { |
4513 | int val; | |
c5aa993b | 4514 | |
c906108c | 4515 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4516 | (Currently all watchpoints go on the bpstat whether hit or not. |
4517 | That probably could (should) be changed, provided care is taken | |
c906108c | 4518 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4519 | for (; bs; bs = bs->next) |
4520 | { | |
4521 | val = print_bp_stop_message (bs); | |
4522 | if (val == PRINT_SRC_ONLY | |
4523 | || val == PRINT_SRC_AND_LOC | |
4524 | || val == PRINT_NOTHING) | |
4525 | return val; | |
4526 | } | |
c906108c | 4527 | |
36dfb11c TT |
4528 | /* If we had hit a shared library event breakpoint, |
4529 | print_bp_stop_message would print out this message. If we hit an | |
4530 | OS-level shared library event, do the same thing. */ | |
4531 | if (kind == TARGET_WAITKIND_LOADED) | |
4532 | { | |
edcc5120 | 4533 | print_solib_event (0); |
36dfb11c TT |
4534 | return PRINT_NOTHING; |
4535 | } | |
4536 | ||
e514a9d6 | 4537 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4538 | with and nothing was printed. */ |
917317f4 | 4539 | return PRINT_UNKNOWN; |
c906108c SS |
4540 | } |
4541 | ||
4a64f543 MS |
4542 | /* Evaluate the expression EXP and return 1 if value is zero. This is |
4543 | used inside a catch_errors to evaluate the breakpoint condition. | |
4544 | The argument is a "struct expression *" that has been cast to a | |
4545 | "char *" to make it pass through catch_errors. */ | |
c906108c SS |
4546 | |
4547 | static int | |
4efb68b1 | 4548 | breakpoint_cond_eval (void *exp) |
c906108c | 4549 | { |
278cd55f | 4550 | struct value *mark = value_mark (); |
c5aa993b | 4551 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
cc59ec59 | 4552 | |
c906108c SS |
4553 | value_free_to_mark (mark); |
4554 | return i; | |
4555 | } | |
4556 | ||
5760d0ab | 4557 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c SS |
4558 | |
4559 | static bpstat | |
5760d0ab | 4560 | bpstat_alloc (struct bp_location *bl, bpstat **bs_link_pointer) |
c906108c SS |
4561 | { |
4562 | bpstat bs; | |
4563 | ||
4564 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
5760d0ab JK |
4565 | bs->next = NULL; |
4566 | **bs_link_pointer = bs; | |
4567 | *bs_link_pointer = &bs->next; | |
f431efe5 PA |
4568 | bs->breakpoint_at = bl->owner; |
4569 | bs->bp_location_at = bl; | |
4570 | incref_bp_location (bl); | |
c906108c SS |
4571 | /* If the condition is false, etc., don't do the commands. */ |
4572 | bs->commands = NULL; | |
4573 | bs->old_val = NULL; | |
4574 | bs->print_it = print_it_normal; | |
4575 | return bs; | |
4576 | } | |
4577 | \f | |
d983da9c DJ |
4578 | /* The target has stopped with waitstatus WS. Check if any hardware |
4579 | watchpoints have triggered, according to the target. */ | |
4580 | ||
4581 | int | |
4582 | watchpoints_triggered (struct target_waitstatus *ws) | |
4583 | { | |
d92524f1 | 4584 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
4585 | CORE_ADDR addr; |
4586 | struct breakpoint *b; | |
4587 | ||
4588 | if (!stopped_by_watchpoint) | |
4589 | { | |
4590 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4591 | as not triggered. */ | |
4592 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4593 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4594 | { |
4595 | struct watchpoint *w = (struct watchpoint *) b; | |
4596 | ||
4597 | w->watchpoint_triggered = watch_triggered_no; | |
4598 | } | |
d983da9c DJ |
4599 | |
4600 | return 0; | |
4601 | } | |
4602 | ||
4603 | if (!target_stopped_data_address (¤t_target, &addr)) | |
4604 | { | |
4605 | /* We were stopped by a watchpoint, but we don't know where. | |
4606 | Mark all watchpoints as unknown. */ | |
4607 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4608 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4609 | { |
4610 | struct watchpoint *w = (struct watchpoint *) b; | |
4611 | ||
4612 | w->watchpoint_triggered = watch_triggered_unknown; | |
4613 | } | |
d983da9c DJ |
4614 | |
4615 | return stopped_by_watchpoint; | |
4616 | } | |
4617 | ||
4618 | /* The target could report the data address. Mark watchpoints | |
4619 | affected by this data address as triggered, and all others as not | |
4620 | triggered. */ | |
4621 | ||
4622 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4623 | if (is_hardware_watchpoint (b)) |
d983da9c | 4624 | { |
3a5c3e22 | 4625 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 4626 | struct bp_location *loc; |
d983da9c | 4627 | |
3a5c3e22 | 4628 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 4629 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 4630 | { |
3a5c3e22 | 4631 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4632 | { |
3a5c3e22 PA |
4633 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4634 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4635 | |
4636 | if (newaddr == start) | |
4637 | { | |
3a5c3e22 | 4638 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4639 | break; |
4640 | } | |
4641 | } | |
4642 | /* Exact match not required. Within range is sufficient. */ | |
4643 | else if (target_watchpoint_addr_within_range (¤t_target, | |
4644 | addr, loc->address, | |
4645 | loc->length)) | |
4646 | { | |
3a5c3e22 | 4647 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4648 | break; |
4649 | } | |
4650 | } | |
d983da9c DJ |
4651 | } |
4652 | ||
4653 | return 1; | |
4654 | } | |
4655 | ||
c906108c SS |
4656 | /* Possible return values for watchpoint_check (this can't be an enum |
4657 | because of check_errors). */ | |
4658 | /* The watchpoint has been deleted. */ | |
4659 | #define WP_DELETED 1 | |
4660 | /* The value has changed. */ | |
4661 | #define WP_VALUE_CHANGED 2 | |
4662 | /* The value has not changed. */ | |
4663 | #define WP_VALUE_NOT_CHANGED 3 | |
60e1c644 PA |
4664 | /* Ignore this watchpoint, no matter if the value changed or not. */ |
4665 | #define WP_IGNORE 4 | |
c906108c SS |
4666 | |
4667 | #define BP_TEMPFLAG 1 | |
4668 | #define BP_HARDWAREFLAG 2 | |
4669 | ||
4a64f543 MS |
4670 | /* Evaluate watchpoint condition expression and check if its value |
4671 | changed. | |
553e4c11 JB |
4672 | |
4673 | P should be a pointer to struct bpstat, but is defined as a void * | |
4674 | in order for this function to be usable with catch_errors. */ | |
c906108c SS |
4675 | |
4676 | static int | |
4efb68b1 | 4677 | watchpoint_check (void *p) |
c906108c SS |
4678 | { |
4679 | bpstat bs = (bpstat) p; | |
3a5c3e22 | 4680 | struct watchpoint *b; |
c906108c SS |
4681 | struct frame_info *fr; |
4682 | int within_current_scope; | |
4683 | ||
f431efe5 | 4684 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4685 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4686 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4687 | |
f6bc2008 PA |
4688 | /* If this is a local watchpoint, we only want to check if the |
4689 | watchpoint frame is in scope if the current thread is the thread | |
4690 | that was used to create the watchpoint. */ | |
4691 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4692 | return WP_IGNORE; |
f6bc2008 | 4693 | |
c906108c SS |
4694 | if (b->exp_valid_block == NULL) |
4695 | within_current_scope = 1; | |
4696 | else | |
4697 | { | |
edb3359d DJ |
4698 | struct frame_info *frame = get_current_frame (); |
4699 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4700 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4701 | ||
4a64f543 MS |
4702 | /* in_function_epilogue_p() returns a non-zero value if we're |
4703 | still in the function but the stack frame has already been | |
4704 | invalidated. Since we can't rely on the values of local | |
4705 | variables after the stack has been destroyed, we are treating | |
4706 | the watchpoint in that state as `not changed' without further | |
4707 | checking. Don't mark watchpoints as changed if the current | |
4708 | frame is in an epilogue - even if they are in some other | |
4709 | frame, our view of the stack is likely to be wrong and | |
4710 | frame_find_by_id could error out. */ | |
a0f49112 | 4711 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) |
60e1c644 | 4712 | return WP_IGNORE; |
a0f49112 | 4713 | |
101dcfbe | 4714 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 4715 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
4716 | |
4717 | /* If we've gotten confused in the unwinder, we might have | |
4718 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
4719 | if (within_current_scope) |
4720 | { | |
4721 | struct symbol *function; | |
4722 | ||
4723 | function = get_frame_function (fr); | |
4724 | if (function == NULL | |
4725 | || !contained_in (b->exp_valid_block, | |
4726 | SYMBOL_BLOCK_VALUE (function))) | |
4727 | within_current_scope = 0; | |
4728 | } | |
69fbadd5 | 4729 | |
edb3359d | 4730 | if (within_current_scope) |
c906108c SS |
4731 | /* If we end up stopping, the current frame will get selected |
4732 | in normal_stop. So this call to select_frame won't affect | |
4733 | the user. */ | |
0f7d239c | 4734 | select_frame (fr); |
c906108c | 4735 | } |
c5aa993b | 4736 | |
c906108c SS |
4737 | if (within_current_scope) |
4738 | { | |
4a64f543 MS |
4739 | /* We use value_{,free_to_}mark because it could be a *long* |
4740 | time before we return to the command level and call | |
4741 | free_all_values. We can't call free_all_values because we | |
4742 | might be in the middle of evaluating a function call. */ | |
c906108c | 4743 | |
0cf6dd15 | 4744 | int pc = 0; |
9c06b0b4 | 4745 | struct value *mark; |
fa4727a6 DJ |
4746 | struct value *new_val; |
4747 | ||
3a5c3e22 | 4748 | if (is_masked_watchpoint (&b->base)) |
9c06b0b4 TJB |
4749 | /* Since we don't know the exact trigger address (from |
4750 | stopped_data_address), just tell the user we've triggered | |
4751 | a mask watchpoint. */ | |
4752 | return WP_VALUE_CHANGED; | |
4753 | ||
4754 | mark = value_mark (); | |
0cf6dd15 | 4755 | fetch_subexp_value (b->exp, &pc, &new_val, NULL, NULL); |
218d2fc6 | 4756 | |
4a64f543 MS |
4757 | /* We use value_equal_contents instead of value_equal because |
4758 | the latter coerces an array to a pointer, thus comparing just | |
4759 | the address of the array instead of its contents. This is | |
4760 | not what we want. */ | |
fa4727a6 | 4761 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 4762 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 4763 | { |
fa4727a6 DJ |
4764 | if (new_val != NULL) |
4765 | { | |
4766 | release_value (new_val); | |
4767 | value_free_to_mark (mark); | |
4768 | } | |
c906108c SS |
4769 | bs->old_val = b->val; |
4770 | b->val = new_val; | |
fa4727a6 | 4771 | b->val_valid = 1; |
c906108c SS |
4772 | return WP_VALUE_CHANGED; |
4773 | } | |
4774 | else | |
4775 | { | |
60e1c644 | 4776 | /* Nothing changed. */ |
c906108c | 4777 | value_free_to_mark (mark); |
c906108c SS |
4778 | return WP_VALUE_NOT_CHANGED; |
4779 | } | |
4780 | } | |
4781 | else | |
4782 | { | |
79a45e25 PA |
4783 | struct ui_out *uiout = current_uiout; |
4784 | ||
c906108c | 4785 | /* This seems like the only logical thing to do because |
c5aa993b JM |
4786 | if we temporarily ignored the watchpoint, then when |
4787 | we reenter the block in which it is valid it contains | |
4788 | garbage (in the case of a function, it may have two | |
4789 | garbage values, one before and one after the prologue). | |
4790 | So we can't even detect the first assignment to it and | |
4791 | watch after that (since the garbage may or may not equal | |
4792 | the first value assigned). */ | |
348d480f PA |
4793 | /* We print all the stop information in |
4794 | breakpoint_ops->print_it, but in this case, by the time we | |
4795 | call breakpoint_ops->print_it this bp will be deleted | |
4796 | already. So we have no choice but print the information | |
4797 | here. */ | |
9dc5e2a9 | 4798 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
4799 | ui_out_field_string |
4800 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 4801 | ui_out_text (uiout, "\nWatchpoint "); |
3a5c3e22 | 4802 | ui_out_field_int (uiout, "wpnum", b->base.number); |
3e43a32a MS |
4803 | ui_out_text (uiout, |
4804 | " deleted because the program has left the block in\n\ | |
8b93c638 | 4805 | which its expression is valid.\n"); |
4ce44c66 | 4806 | |
cdac0397 | 4807 | /* Make sure the watchpoint's commands aren't executed. */ |
3a5c3e22 | 4808 | decref_counted_command_line (&b->base.commands); |
d0fb5eae | 4809 | watchpoint_del_at_next_stop (b); |
c906108c SS |
4810 | |
4811 | return WP_DELETED; | |
4812 | } | |
4813 | } | |
4814 | ||
18a18393 | 4815 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
4816 | breakpoint location BL. This function does not check if we should |
4817 | stop, only if BL explains the stop. */ | |
4818 | ||
18a18393 | 4819 | static int |
6c95b8df | 4820 | bpstat_check_location (const struct bp_location *bl, |
09ac7c10 TT |
4821 | struct address_space *aspace, CORE_ADDR bp_addr, |
4822 | const struct target_waitstatus *ws) | |
18a18393 VP |
4823 | { |
4824 | struct breakpoint *b = bl->owner; | |
4825 | ||
348d480f | 4826 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
4827 | gdb_assert (b != NULL); |
4828 | ||
09ac7c10 | 4829 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
4830 | } |
4831 | ||
3a5c3e22 PA |
4832 | /* Determine if the watched values have actually changed, and we |
4833 | should stop. If not, set BS->stop to 0. */ | |
4834 | ||
18a18393 VP |
4835 | static void |
4836 | bpstat_check_watchpoint (bpstat bs) | |
4837 | { | |
2bdf28a0 | 4838 | const struct bp_location *bl; |
3a5c3e22 | 4839 | struct watchpoint *b; |
2bdf28a0 JK |
4840 | |
4841 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 4842 | bl = bs->bp_location_at; |
2bdf28a0 | 4843 | gdb_assert (bl != NULL); |
3a5c3e22 | 4844 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 4845 | gdb_assert (b != NULL); |
18a18393 | 4846 | |
18a18393 | 4847 | { |
18a18393 VP |
4848 | int must_check_value = 0; |
4849 | ||
3a5c3e22 | 4850 | if (b->base.type == bp_watchpoint) |
18a18393 VP |
4851 | /* For a software watchpoint, we must always check the |
4852 | watched value. */ | |
4853 | must_check_value = 1; | |
4854 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
4855 | /* We have a hardware watchpoint (read, write, or access) | |
4856 | and the target earlier reported an address watched by | |
4857 | this watchpoint. */ | |
4858 | must_check_value = 1; | |
4859 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
3a5c3e22 | 4860 | && b->base.type == bp_hardware_watchpoint) |
18a18393 VP |
4861 | /* We were stopped by a hardware watchpoint, but the target could |
4862 | not report the data address. We must check the watchpoint's | |
4863 | value. Access and read watchpoints are out of luck; without | |
4864 | a data address, we can't figure it out. */ | |
4865 | must_check_value = 1; | |
3a5c3e22 | 4866 | |
18a18393 VP |
4867 | if (must_check_value) |
4868 | { | |
3e43a32a MS |
4869 | char *message |
4870 | = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
3a5c3e22 | 4871 | b->base.number); |
18a18393 VP |
4872 | struct cleanup *cleanups = make_cleanup (xfree, message); |
4873 | int e = catch_errors (watchpoint_check, bs, message, | |
4874 | RETURN_MASK_ALL); | |
4875 | do_cleanups (cleanups); | |
4876 | switch (e) | |
4877 | { | |
4878 | case WP_DELETED: | |
4879 | /* We've already printed what needs to be printed. */ | |
4880 | bs->print_it = print_it_done; | |
4881 | /* Stop. */ | |
4882 | break; | |
60e1c644 PA |
4883 | case WP_IGNORE: |
4884 | bs->print_it = print_it_noop; | |
4885 | bs->stop = 0; | |
4886 | break; | |
18a18393 | 4887 | case WP_VALUE_CHANGED: |
3a5c3e22 | 4888 | if (b->base.type == bp_read_watchpoint) |
18a18393 | 4889 | { |
85d721b8 PA |
4890 | /* There are two cases to consider here: |
4891 | ||
4a64f543 | 4892 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
4893 | In that case, trust the target, and always report |
4894 | the watchpoint hit to the user. Even though | |
4895 | reads don't cause value changes, the value may | |
4896 | have changed since the last time it was read, and | |
4897 | since we're not trapping writes, we will not see | |
4898 | those, and as such we should ignore our notion of | |
4899 | old value. | |
4900 | ||
4a64f543 | 4901 | 2. We're watching the triggered memory for both |
85d721b8 PA |
4902 | reads and writes. There are two ways this may |
4903 | happen: | |
4904 | ||
4a64f543 | 4905 | 2.1. This is a target that can't break on data |
85d721b8 PA |
4906 | reads only, but can break on accesses (reads or |
4907 | writes), such as e.g., x86. We detect this case | |
4908 | at the time we try to insert read watchpoints. | |
4909 | ||
4a64f543 | 4910 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
4911 | watchpoints, but, the user set an access or write |
4912 | watchpoint watching the same memory as this read | |
4913 | watchpoint. | |
4914 | ||
4915 | If we're watching memory writes as well as reads, | |
4916 | ignore watchpoint hits when we find that the | |
4917 | value hasn't changed, as reads don't cause | |
4918 | changes. This still gives false positives when | |
4919 | the program writes the same value to memory as | |
4920 | what there was already in memory (we will confuse | |
4921 | it for a read), but it's much better than | |
4922 | nothing. */ | |
4923 | ||
4924 | int other_write_watchpoint = 0; | |
4925 | ||
4926 | if (bl->watchpoint_type == hw_read) | |
4927 | { | |
4928 | struct breakpoint *other_b; | |
4929 | ||
4930 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
4931 | if (other_b->type == bp_hardware_watchpoint |
4932 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 4933 | { |
3a5c3e22 PA |
4934 | struct watchpoint *other_w = |
4935 | (struct watchpoint *) other_b; | |
4936 | ||
4937 | if (other_w->watchpoint_triggered | |
4938 | == watch_triggered_yes) | |
4939 | { | |
4940 | other_write_watchpoint = 1; | |
4941 | break; | |
4942 | } | |
85d721b8 PA |
4943 | } |
4944 | } | |
4945 | ||
4946 | if (other_write_watchpoint | |
4947 | || bl->watchpoint_type == hw_access) | |
4948 | { | |
4949 | /* We're watching the same memory for writes, | |
4950 | and the value changed since the last time we | |
4951 | updated it, so this trap must be for a write. | |
4952 | Ignore it. */ | |
4953 | bs->print_it = print_it_noop; | |
4954 | bs->stop = 0; | |
4955 | } | |
18a18393 VP |
4956 | } |
4957 | break; | |
4958 | case WP_VALUE_NOT_CHANGED: | |
3a5c3e22 PA |
4959 | if (b->base.type == bp_hardware_watchpoint |
4960 | || b->base.type == bp_watchpoint) | |
18a18393 VP |
4961 | { |
4962 | /* Don't stop: write watchpoints shouldn't fire if | |
4963 | the value hasn't changed. */ | |
4964 | bs->print_it = print_it_noop; | |
4965 | bs->stop = 0; | |
4966 | } | |
4967 | /* Stop. */ | |
4968 | break; | |
4969 | default: | |
4970 | /* Can't happen. */ | |
4971 | case 0: | |
4972 | /* Error from catch_errors. */ | |
3a5c3e22 | 4973 | printf_filtered (_("Watchpoint %d deleted.\n"), b->base.number); |
d0fb5eae | 4974 | watchpoint_del_at_next_stop (b); |
18a18393 VP |
4975 | /* We've already printed what needs to be printed. */ |
4976 | bs->print_it = print_it_done; | |
4977 | break; | |
4978 | } | |
4979 | } | |
4980 | else /* must_check_value == 0 */ | |
4981 | { | |
4982 | /* This is a case where some watchpoint(s) triggered, but | |
4983 | not at the address of this watchpoint, or else no | |
4984 | watchpoint triggered after all. So don't print | |
4985 | anything for this watchpoint. */ | |
4986 | bs->print_it = print_it_noop; | |
4987 | bs->stop = 0; | |
4988 | } | |
4989 | } | |
4990 | } | |
4991 | ||
4992 | ||
4993 | /* Check conditions (condition proper, frame, thread and ignore count) | |
4994 | of breakpoint referred to by BS. If we should not stop for this | |
4995 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 4996 | |
18a18393 VP |
4997 | static void |
4998 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
4999 | { | |
5000 | int thread_id = pid_to_thread_id (ptid); | |
2bdf28a0 JK |
5001 | const struct bp_location *bl; |
5002 | struct breakpoint *b; | |
5003 | ||
5004 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5005 | bl = bs->bp_location_at; |
2bdf28a0 | 5006 | gdb_assert (bl != NULL); |
f431efe5 | 5007 | b = bs->breakpoint_at; |
2bdf28a0 | 5008 | gdb_assert (b != NULL); |
18a18393 | 5009 | |
b775012e LM |
5010 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5011 | need to do so again since GDB does not know if we stopped due to a | |
5012 | breakpoint or a single step breakpoint. */ | |
5013 | ||
18a18393 | 5014 | if (frame_id_p (b->frame_id) |
edb3359d | 5015 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 VP |
5016 | bs->stop = 0; |
5017 | else if (bs->stop) | |
5018 | { | |
5019 | int value_is_zero = 0; | |
60e1c644 PA |
5020 | struct expression *cond; |
5021 | ||
7371cf6d PM |
5022 | /* Evaluate Python breakpoints that have a "stop" |
5023 | method implemented. */ | |
5024 | if (b->py_bp_object) | |
5025 | bs->stop = gdbpy_should_stop (b->py_bp_object); | |
5026 | ||
60e1c644 | 5027 | if (is_watchpoint (b)) |
3a5c3e22 PA |
5028 | { |
5029 | struct watchpoint *w = (struct watchpoint *) b; | |
5030 | ||
5031 | cond = w->cond_exp; | |
5032 | } | |
60e1c644 PA |
5033 | else |
5034 | cond = bl->cond; | |
5035 | ||
f431efe5 | 5036 | if (cond && b->disposition != disp_del_at_next_stop) |
18a18393 | 5037 | { |
60e1c644 | 5038 | int within_current_scope = 1; |
3a5c3e22 | 5039 | struct watchpoint * w; |
60e1c644 | 5040 | |
c5bc3a77 DJ |
5041 | /* We use value_mark and value_free_to_mark because it could |
5042 | be a long time before we return to the command level and | |
5043 | call free_all_values. We can't call free_all_values | |
5044 | because we might be in the middle of evaluating a | |
5045 | function call. */ | |
5046 | struct value *mark = value_mark (); | |
5047 | ||
3a5c3e22 PA |
5048 | if (is_watchpoint (b)) |
5049 | w = (struct watchpoint *) b; | |
5050 | else | |
5051 | w = NULL; | |
5052 | ||
edb3359d DJ |
5053 | /* Need to select the frame, with all that implies so that |
5054 | the conditions will have the right context. Because we | |
5055 | use the frame, we will not see an inlined function's | |
5056 | variables when we arrive at a breakpoint at the start | |
5057 | of the inlined function; the current frame will be the | |
5058 | call site. */ | |
3a5c3e22 | 5059 | if (w == NULL || w->cond_exp_valid_block == NULL) |
60e1c644 PA |
5060 | select_frame (get_current_frame ()); |
5061 | else | |
5062 | { | |
5063 | struct frame_info *frame; | |
5064 | ||
5065 | /* For local watchpoint expressions, which particular | |
5066 | instance of a local is being watched matters, so we | |
5067 | keep track of the frame to evaluate the expression | |
5068 | in. To evaluate the condition however, it doesn't | |
5069 | really matter which instantiation of the function | |
5070 | where the condition makes sense triggers the | |
5071 | watchpoint. This allows an expression like "watch | |
5072 | global if q > 10" set in `func', catch writes to | |
5073 | global on all threads that call `func', or catch | |
5074 | writes on all recursive calls of `func' by a single | |
5075 | thread. We simply always evaluate the condition in | |
5076 | the innermost frame that's executing where it makes | |
5077 | sense to evaluate the condition. It seems | |
5078 | intuitive. */ | |
3a5c3e22 | 5079 | frame = block_innermost_frame (w->cond_exp_valid_block); |
60e1c644 PA |
5080 | if (frame != NULL) |
5081 | select_frame (frame); | |
5082 | else | |
5083 | within_current_scope = 0; | |
5084 | } | |
5085 | if (within_current_scope) | |
5086 | value_is_zero | |
5087 | = catch_errors (breakpoint_cond_eval, cond, | |
5088 | "Error in testing breakpoint condition:\n", | |
5089 | RETURN_MASK_ALL); | |
5090 | else | |
5091 | { | |
5092 | warning (_("Watchpoint condition cannot be tested " | |
5093 | "in the current scope")); | |
5094 | /* If we failed to set the right context for this | |
5095 | watchpoint, unconditionally report it. */ | |
5096 | value_is_zero = 0; | |
5097 | } | |
4a64f543 | 5098 | /* FIXME-someday, should give breakpoint #. */ |
c5bc3a77 | 5099 | value_free_to_mark (mark); |
18a18393 | 5100 | } |
60e1c644 PA |
5101 | |
5102 | if (cond && value_is_zero) | |
18a18393 VP |
5103 | { |
5104 | bs->stop = 0; | |
5105 | } | |
5106 | else if (b->thread != -1 && b->thread != thread_id) | |
5107 | { | |
5108 | bs->stop = 0; | |
5109 | } | |
5110 | else if (b->ignore_count > 0) | |
5111 | { | |
5112 | b->ignore_count--; | |
5113 | annotate_ignore_count_change (); | |
5114 | bs->stop = 0; | |
4a64f543 | 5115 | /* Increase the hit count even though we don't stop. */ |
18a18393 | 5116 | ++(b->hit_count); |
8d3788bd | 5117 | observer_notify_breakpoint_modified (b); |
18a18393 VP |
5118 | } |
5119 | } | |
5120 | } | |
5121 | ||
5122 | ||
9709f61c | 5123 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 5124 | BP_ADDR in thread PTID. |
c906108c | 5125 | |
d983da9c | 5126 | Determine whether we stopped at a breakpoint, etc, or whether we |
4a64f543 MS |
5127 | don't understand this stop. Result is a chain of bpstat's such |
5128 | that: | |
c906108c | 5129 | |
c5aa993b | 5130 | if we don't understand the stop, the result is a null pointer. |
c906108c | 5131 | |
c5aa993b | 5132 | if we understand why we stopped, the result is not null. |
c906108c | 5133 | |
c5aa993b JM |
5134 | Each element of the chain refers to a particular breakpoint or |
5135 | watchpoint at which we have stopped. (We may have stopped for | |
5136 | several reasons concurrently.) | |
c906108c | 5137 | |
c5aa993b JM |
5138 | Each element of the chain has valid next, breakpoint_at, |
5139 | commands, FIXME??? fields. */ | |
c906108c SS |
5140 | |
5141 | bpstat | |
6c95b8df | 5142 | bpstat_stop_status (struct address_space *aspace, |
09ac7c10 TT |
5143 | CORE_ADDR bp_addr, ptid_t ptid, |
5144 | const struct target_waitstatus *ws) | |
c906108c | 5145 | { |
0d381245 | 5146 | struct breakpoint *b = NULL; |
afe38095 | 5147 | struct bp_location *bl; |
20874c92 | 5148 | struct bp_location *loc; |
5760d0ab JK |
5149 | /* First item of allocated bpstat's. */ |
5150 | bpstat bs_head = NULL, *bs_link = &bs_head; | |
c906108c | 5151 | /* Pointer to the last thing in the chain currently. */ |
5760d0ab | 5152 | bpstat bs; |
20874c92 | 5153 | int ix; |
429374b8 | 5154 | int need_remove_insert; |
f431efe5 | 5155 | int removed_any; |
c906108c | 5156 | |
f431efe5 PA |
5157 | /* First, build the bpstat chain with locations that explain a |
5158 | target stop, while being careful to not set the target running, | |
5159 | as that may invalidate locations (in particular watchpoint | |
5160 | locations are recreated). Resuming will happen here with | |
5161 | breakpoint conditions or watchpoint expressions that include | |
5162 | inferior function calls. */ | |
c5aa993b | 5163 | |
429374b8 JK |
5164 | ALL_BREAKPOINTS (b) |
5165 | { | |
5166 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) | |
5167 | continue; | |
a5606eee | 5168 | |
429374b8 JK |
5169 | for (bl = b->loc; bl != NULL; bl = bl->next) |
5170 | { | |
4a64f543 MS |
5171 | /* For hardware watchpoints, we look only at the first |
5172 | location. The watchpoint_check function will work on the | |
5173 | entire expression, not the individual locations. For | |
5174 | read watchpoints, the watchpoints_triggered function has | |
5175 | checked all locations already. */ | |
429374b8 JK |
5176 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5177 | break; | |
18a18393 | 5178 | |
429374b8 JK |
5179 | if (bl->shlib_disabled) |
5180 | continue; | |
c5aa993b | 5181 | |
09ac7c10 | 5182 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5183 | continue; |
c5aa993b | 5184 | |
4a64f543 MS |
5185 | /* Come here if it's a watchpoint, or if the break address |
5186 | matches. */ | |
c5aa993b | 5187 | |
4a64f543 MS |
5188 | bs = bpstat_alloc (bl, &bs_link); /* Alloc a bpstat to |
5189 | explain stop. */ | |
c5aa993b | 5190 | |
f431efe5 PA |
5191 | /* Assume we stop. Should we find a watchpoint that is not |
5192 | actually triggered, or if the condition of the breakpoint | |
5193 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5194 | bs->stop = 1; |
5195 | bs->print = 1; | |
d983da9c | 5196 | |
f431efe5 PA |
5197 | /* If this is a scope breakpoint, mark the associated |
5198 | watchpoint as triggered so that we will handle the | |
5199 | out-of-scope event. We'll get to the watchpoint next | |
5200 | iteration. */ | |
d0fb5eae | 5201 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5202 | { |
5203 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5204 | ||
5205 | w->watchpoint_triggered = watch_triggered_yes; | |
5206 | } | |
f431efe5 PA |
5207 | } |
5208 | } | |
5209 | ||
5210 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
5211 | { | |
f1310107 | 5212 | if (breakpoint_location_address_match (loc, aspace, bp_addr)) |
f431efe5 | 5213 | { |
5760d0ab | 5214 | bs = bpstat_alloc (loc, &bs_link); |
f431efe5 PA |
5215 | /* For hits of moribund locations, we should just proceed. */ |
5216 | bs->stop = 0; | |
5217 | bs->print = 0; | |
5218 | bs->print_it = print_it_noop; | |
5219 | } | |
5220 | } | |
5221 | ||
edcc5120 TT |
5222 | /* A bit of special processing for shlib breakpoints. We need to |
5223 | process solib loading here, so that the lists of loaded and | |
5224 | unloaded libraries are correct before we handle "catch load" and | |
5225 | "catch unload". */ | |
5226 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5227 | { | |
5d268276 | 5228 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5229 | { |
5230 | handle_solib_event (); | |
5231 | break; | |
5232 | } | |
5233 | } | |
5234 | ||
f431efe5 PA |
5235 | /* Now go through the locations that caused the target to stop, and |
5236 | check whether we're interested in reporting this stop to higher | |
5237 | layers, or whether we should resume the target transparently. */ | |
5238 | ||
5239 | removed_any = 0; | |
5240 | ||
5760d0ab | 5241 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5242 | { |
5243 | if (!bs->stop) | |
5244 | continue; | |
5245 | ||
f431efe5 | 5246 | b = bs->breakpoint_at; |
348d480f PA |
5247 | b->ops->check_status (bs); |
5248 | if (bs->stop) | |
28010a5d | 5249 | { |
348d480f | 5250 | bpstat_check_breakpoint_conditions (bs, ptid); |
f431efe5 | 5251 | |
429374b8 JK |
5252 | if (bs->stop) |
5253 | { | |
5254 | ++(b->hit_count); | |
8d3788bd | 5255 | observer_notify_breakpoint_modified (b); |
c906108c | 5256 | |
4a64f543 | 5257 | /* We will stop here. */ |
429374b8 JK |
5258 | if (b->disposition == disp_disable) |
5259 | { | |
816338b5 SS |
5260 | --(b->enable_count); |
5261 | if (b->enable_count <= 0 | |
5262 | && b->enable_state != bp_permanent) | |
429374b8 | 5263 | b->enable_state = bp_disabled; |
f431efe5 | 5264 | removed_any = 1; |
429374b8 JK |
5265 | } |
5266 | if (b->silent) | |
5267 | bs->print = 0; | |
5268 | bs->commands = b->commands; | |
9add0f1b | 5269 | incref_counted_command_line (bs->commands); |
abf85f46 JK |
5270 | if (command_line_is_silent (bs->commands |
5271 | ? bs->commands->commands : NULL)) | |
5272 | bs->print = 0; | |
429374b8 JK |
5273 | } |
5274 | ||
348d480f | 5275 | } |
a9b3a50f PA |
5276 | |
5277 | /* Print nothing for this entry if we don't stop or don't | |
5278 | print. */ | |
5279 | if (!bs->stop || !bs->print) | |
5280 | bs->print_it = print_it_noop; | |
429374b8 | 5281 | } |
876fa593 | 5282 | |
d983da9c DJ |
5283 | /* If we aren't stopping, the value of some hardware watchpoint may |
5284 | not have changed, but the intermediate memory locations we are | |
5285 | watching may have. Don't bother if we're stopping; this will get | |
5286 | done later. */ | |
d832cb68 | 5287 | need_remove_insert = 0; |
5760d0ab JK |
5288 | if (! bpstat_causes_stop (bs_head)) |
5289 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5290 | if (!bs->stop |
f431efe5 PA |
5291 | && bs->breakpoint_at |
5292 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5293 | { |
3a5c3e22 PA |
5294 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5295 | ||
5296 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5297 | need_remove_insert = 1; |
d983da9c DJ |
5298 | } |
5299 | ||
d832cb68 | 5300 | if (need_remove_insert) |
2d134ed3 | 5301 | update_global_location_list (1); |
f431efe5 PA |
5302 | else if (removed_any) |
5303 | update_global_location_list (0); | |
d832cb68 | 5304 | |
5760d0ab | 5305 | return bs_head; |
c906108c | 5306 | } |
628fe4e4 JK |
5307 | |
5308 | static void | |
5309 | handle_jit_event (void) | |
5310 | { | |
5311 | struct frame_info *frame; | |
5312 | struct gdbarch *gdbarch; | |
5313 | ||
5314 | /* Switch terminal for any messages produced by | |
5315 | breakpoint_re_set. */ | |
5316 | target_terminal_ours_for_output (); | |
5317 | ||
5318 | frame = get_current_frame (); | |
5319 | gdbarch = get_frame_arch (frame); | |
5320 | ||
5321 | jit_event_handler (gdbarch); | |
5322 | ||
5323 | target_terminal_inferior (); | |
5324 | } | |
5325 | ||
edcc5120 TT |
5326 | /* Handle an solib event by calling solib_add. */ |
5327 | ||
5328 | void | |
5329 | handle_solib_event (void) | |
5330 | { | |
5331 | clear_program_space_solib_cache (current_inferior ()->pspace); | |
5332 | ||
5333 | /* Check for any newly added shared libraries if we're supposed to | |
5334 | be adding them automatically. Switch terminal for any messages | |
5335 | produced by breakpoint_re_set. */ | |
5336 | target_terminal_ours_for_output (); | |
5337 | #ifdef SOLIB_ADD | |
5338 | SOLIB_ADD (NULL, 0, ¤t_target, auto_solib_add); | |
5339 | #else | |
5340 | solib_add (NULL, 0, ¤t_target, auto_solib_add); | |
5341 | #endif | |
5342 | target_terminal_inferior (); | |
5343 | } | |
5344 | ||
628fe4e4 JK |
5345 | /* Prepare WHAT final decision for infrun. */ |
5346 | ||
5347 | /* Decide what infrun needs to do with this bpstat. */ | |
5348 | ||
c906108c | 5349 | struct bpstat_what |
0e30163f | 5350 | bpstat_what (bpstat bs_head) |
c906108c | 5351 | { |
c906108c | 5352 | struct bpstat_what retval; |
628fe4e4 | 5353 | int jit_event = 0; |
0e30163f | 5354 | bpstat bs; |
c906108c | 5355 | |
628fe4e4 | 5356 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5357 | retval.call_dummy = STOP_NONE; |
186c406b | 5358 | retval.is_longjmp = 0; |
628fe4e4 | 5359 | |
0e30163f | 5360 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5361 | { |
628fe4e4 JK |
5362 | /* Extract this BS's action. After processing each BS, we check |
5363 | if its action overrides all we've seem so far. */ | |
5364 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5365 | enum bptype bptype; | |
5366 | ||
c906108c | 5367 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5368 | { |
5369 | /* I suspect this can happen if it was a momentary | |
5370 | breakpoint which has since been deleted. */ | |
5371 | bptype = bp_none; | |
5372 | } | |
20874c92 | 5373 | else |
f431efe5 | 5374 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5375 | |
5376 | switch (bptype) | |
c906108c SS |
5377 | { |
5378 | case bp_none: | |
628fe4e4 | 5379 | break; |
c906108c SS |
5380 | case bp_breakpoint: |
5381 | case bp_hardware_breakpoint: | |
5382 | case bp_until: | |
5383 | case bp_finish: | |
a9b3a50f | 5384 | case bp_shlib_event: |
c906108c SS |
5385 | if (bs->stop) |
5386 | { | |
5387 | if (bs->print) | |
628fe4e4 | 5388 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5389 | else |
628fe4e4 | 5390 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5391 | } |
5392 | else | |
628fe4e4 | 5393 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5394 | break; |
5395 | case bp_watchpoint: | |
5396 | case bp_hardware_watchpoint: | |
5397 | case bp_read_watchpoint: | |
5398 | case bp_access_watchpoint: | |
5399 | if (bs->stop) | |
5400 | { | |
5401 | if (bs->print) | |
628fe4e4 | 5402 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5403 | else |
628fe4e4 | 5404 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5405 | } |
5406 | else | |
628fe4e4 JK |
5407 | { |
5408 | /* There was a watchpoint, but we're not stopping. | |
5409 | This requires no further action. */ | |
5410 | } | |
c906108c SS |
5411 | break; |
5412 | case bp_longjmp: | |
e2e4d78b | 5413 | case bp_longjmp_call_dummy: |
186c406b | 5414 | case bp_exception: |
628fe4e4 | 5415 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; |
e2e4d78b | 5416 | retval.is_longjmp = bptype != bp_exception; |
c906108c SS |
5417 | break; |
5418 | case bp_longjmp_resume: | |
186c406b | 5419 | case bp_exception_resume: |
628fe4e4 | 5420 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; |
186c406b | 5421 | retval.is_longjmp = bptype == bp_longjmp_resume; |
c906108c SS |
5422 | break; |
5423 | case bp_step_resume: | |
5424 | if (bs->stop) | |
628fe4e4 JK |
5425 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5426 | else | |
c906108c | 5427 | { |
628fe4e4 JK |
5428 | /* It is for the wrong frame. */ |
5429 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5430 | } |
c906108c | 5431 | break; |
2c03e5be PA |
5432 | case bp_hp_step_resume: |
5433 | if (bs->stop) | |
5434 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5435 | else | |
5436 | { | |
5437 | /* It is for the wrong frame. */ | |
5438 | this_action = BPSTAT_WHAT_SINGLE; | |
5439 | } | |
5440 | break; | |
c906108c | 5441 | case bp_watchpoint_scope: |
c4093a6a | 5442 | case bp_thread_event: |
1900040c | 5443 | case bp_overlay_event: |
0fd8e87f | 5444 | case bp_longjmp_master: |
aa7d318d | 5445 | case bp_std_terminate_master: |
186c406b | 5446 | case bp_exception_master: |
628fe4e4 | 5447 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5448 | break; |
ce78b96d | 5449 | case bp_catchpoint: |
c5aa993b JM |
5450 | if (bs->stop) |
5451 | { | |
5452 | if (bs->print) | |
628fe4e4 | 5453 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5454 | else |
628fe4e4 | 5455 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5456 | } |
5457 | else | |
628fe4e4 JK |
5458 | { |
5459 | /* There was a catchpoint, but we're not stopping. | |
5460 | This requires no further action. */ | |
5461 | } | |
5462 | break; | |
628fe4e4 JK |
5463 | case bp_jit_event: |
5464 | jit_event = 1; | |
5465 | this_action = BPSTAT_WHAT_SINGLE; | |
c5aa993b | 5466 | break; |
c906108c | 5467 | case bp_call_dummy: |
53a5351d JM |
5468 | /* Make sure the action is stop (silent or noisy), |
5469 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5470 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5471 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5472 | break; |
5473 | case bp_std_terminate: | |
5474 | /* Make sure the action is stop (silent or noisy), | |
5475 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5476 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5477 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5478 | break; |
1042e4c0 | 5479 | case bp_tracepoint: |
7a697b8d | 5480 | case bp_fast_tracepoint: |
0fb4aa4b | 5481 | case bp_static_tracepoint: |
1042e4c0 SS |
5482 | /* Tracepoint hits should not be reported back to GDB, and |
5483 | if one got through somehow, it should have been filtered | |
5484 | out already. */ | |
5485 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5486 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5487 | break; |
5488 | case bp_gnu_ifunc_resolver: | |
5489 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5490 | this_action = BPSTAT_WHAT_SINGLE; | |
5491 | break; | |
5492 | case bp_gnu_ifunc_resolver_return: | |
5493 | /* The breakpoint will be removed, execution will restart from the | |
5494 | PC of the former breakpoint. */ | |
5495 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5496 | break; | |
e7e0cddf SS |
5497 | |
5498 | case bp_dprintf: | |
5499 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5500 | break; | |
5501 | ||
628fe4e4 JK |
5502 | default: |
5503 | internal_error (__FILE__, __LINE__, | |
5504 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5505 | } |
628fe4e4 JK |
5506 | |
5507 | retval.main_action = max (retval.main_action, this_action); | |
c906108c | 5508 | } |
628fe4e4 | 5509 | |
0e30163f JK |
5510 | /* These operations may affect the bs->breakpoint_at state so they are |
5511 | delayed after MAIN_ACTION is decided above. */ | |
5512 | ||
628fe4e4 JK |
5513 | if (jit_event) |
5514 | { | |
5515 | if (debug_infrun) | |
5516 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_jit_event\n"); | |
5517 | ||
5518 | handle_jit_event (); | |
5519 | } | |
5520 | ||
0e30163f JK |
5521 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5522 | { | |
5523 | struct breakpoint *b = bs->breakpoint_at; | |
5524 | ||
5525 | if (b == NULL) | |
5526 | continue; | |
5527 | switch (b->type) | |
5528 | { | |
5529 | case bp_gnu_ifunc_resolver: | |
5530 | gnu_ifunc_resolver_stop (b); | |
5531 | break; | |
5532 | case bp_gnu_ifunc_resolver_return: | |
5533 | gnu_ifunc_resolver_return_stop (b); | |
5534 | break; | |
5535 | } | |
5536 | } | |
5537 | ||
c906108c SS |
5538 | return retval; |
5539 | } | |
5540 | ||
5541 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
5542 | without hardware support). This isn't related to a specific bpstat, | |
5543 | just to things like whether watchpoints are set. */ | |
5544 | ||
c5aa993b | 5545 | int |
fba45db2 | 5546 | bpstat_should_step (void) |
c906108c SS |
5547 | { |
5548 | struct breakpoint *b; | |
cc59ec59 | 5549 | |
c906108c | 5550 | ALL_BREAKPOINTS (b) |
717a8278 | 5551 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 5552 | return 1; |
c906108c SS |
5553 | return 0; |
5554 | } | |
5555 | ||
67822962 PA |
5556 | int |
5557 | bpstat_causes_stop (bpstat bs) | |
5558 | { | |
5559 | for (; bs != NULL; bs = bs->next) | |
5560 | if (bs->stop) | |
5561 | return 1; | |
5562 | ||
5563 | return 0; | |
5564 | } | |
5565 | ||
c906108c | 5566 | \f |
c5aa993b | 5567 | |
170b53b2 UW |
5568 | /* Compute a string of spaces suitable to indent the next line |
5569 | so it starts at the position corresponding to the table column | |
5570 | named COL_NAME in the currently active table of UIOUT. */ | |
5571 | ||
5572 | static char * | |
5573 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5574 | { | |
5575 | static char wrap_indent[80]; | |
5576 | int i, total_width, width, align; | |
5577 | char *text; | |
5578 | ||
5579 | total_width = 0; | |
5580 | for (i = 1; ui_out_query_field (uiout, i, &width, &align, &text); i++) | |
5581 | { | |
5582 | if (strcmp (text, col_name) == 0) | |
5583 | { | |
5584 | gdb_assert (total_width < sizeof wrap_indent); | |
5585 | memset (wrap_indent, ' ', total_width); | |
5586 | wrap_indent[total_width] = 0; | |
5587 | ||
5588 | return wrap_indent; | |
5589 | } | |
5590 | ||
5591 | total_width += width + 1; | |
5592 | } | |
5593 | ||
5594 | return NULL; | |
5595 | } | |
5596 | ||
b775012e LM |
5597 | /* Determine if the locations of this breakpoint will have their conditions |
5598 | evaluated by the target, host or a mix of both. Returns the following: | |
5599 | ||
5600 | "host": Host evals condition. | |
5601 | "host or target": Host or Target evals condition. | |
5602 | "target": Target evals condition. | |
5603 | */ | |
5604 | ||
5605 | static const char * | |
5606 | bp_condition_evaluator (struct breakpoint *b) | |
5607 | { | |
5608 | struct bp_location *bl; | |
5609 | char host_evals = 0; | |
5610 | char target_evals = 0; | |
5611 | ||
5612 | if (!b) | |
5613 | return NULL; | |
5614 | ||
5615 | if (!is_breakpoint (b)) | |
5616 | return NULL; | |
5617 | ||
5618 | if (gdb_evaluates_breakpoint_condition_p () | |
5619 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5620 | return condition_evaluation_host; | |
5621 | ||
5622 | for (bl = b->loc; bl; bl = bl->next) | |
5623 | { | |
5624 | if (bl->cond_bytecode) | |
5625 | target_evals++; | |
5626 | else | |
5627 | host_evals++; | |
5628 | } | |
5629 | ||
5630 | if (host_evals && target_evals) | |
5631 | return condition_evaluation_both; | |
5632 | else if (target_evals) | |
5633 | return condition_evaluation_target; | |
5634 | else | |
5635 | return condition_evaluation_host; | |
5636 | } | |
5637 | ||
5638 | /* Determine the breakpoint location's condition evaluator. This is | |
5639 | similar to bp_condition_evaluator, but for locations. */ | |
5640 | ||
5641 | static const char * | |
5642 | bp_location_condition_evaluator (struct bp_location *bl) | |
5643 | { | |
5644 | if (bl && !is_breakpoint (bl->owner)) | |
5645 | return NULL; | |
5646 | ||
5647 | if (gdb_evaluates_breakpoint_condition_p () | |
5648 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5649 | return condition_evaluation_host; | |
5650 | ||
5651 | if (bl && bl->cond_bytecode) | |
5652 | return condition_evaluation_target; | |
5653 | else | |
5654 | return condition_evaluation_host; | |
5655 | } | |
5656 | ||
859825b8 JK |
5657 | /* Print the LOC location out of the list of B->LOC locations. */ |
5658 | ||
170b53b2 UW |
5659 | static void |
5660 | print_breakpoint_location (struct breakpoint *b, | |
5661 | struct bp_location *loc) | |
0d381245 | 5662 | { |
79a45e25 | 5663 | struct ui_out *uiout = current_uiout; |
6c95b8df PA |
5664 | struct cleanup *old_chain = save_current_program_space (); |
5665 | ||
859825b8 JK |
5666 | if (loc != NULL && loc->shlib_disabled) |
5667 | loc = NULL; | |
5668 | ||
6c95b8df PA |
5669 | if (loc != NULL) |
5670 | set_current_program_space (loc->pspace); | |
5671 | ||
56435ebe TT |
5672 | if (b->display_canonical) |
5673 | ui_out_field_string (uiout, "what", b->addr_string); | |
f8eba3c6 | 5674 | else if (loc && loc->source_file) |
0d381245 VP |
5675 | { |
5676 | struct symbol *sym | |
5677 | = find_pc_sect_function (loc->address, loc->section); | |
5678 | if (sym) | |
5679 | { | |
5680 | ui_out_text (uiout, "in "); | |
5681 | ui_out_field_string (uiout, "func", | |
5682 | SYMBOL_PRINT_NAME (sym)); | |
170b53b2 UW |
5683 | ui_out_text (uiout, " "); |
5684 | ui_out_wrap_hint (uiout, wrap_indent_at_field (uiout, "what")); | |
5685 | ui_out_text (uiout, "at "); | |
0d381245 | 5686 | } |
f8eba3c6 | 5687 | ui_out_field_string (uiout, "file", loc->source_file); |
0d381245 VP |
5688 | ui_out_text (uiout, ":"); |
5689 | ||
5690 | if (ui_out_is_mi_like_p (uiout)) | |
5691 | { | |
5692 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
5693 | char *fullname = symtab_to_fullname (sal.symtab); | |
5694 | ||
5695 | if (fullname) | |
5696 | ui_out_field_string (uiout, "fullname", fullname); | |
5697 | } | |
5698 | ||
f8eba3c6 | 5699 | ui_out_field_int (uiout, "line", loc->line_number); |
0d381245 | 5700 | } |
859825b8 | 5701 | else if (loc) |
0d381245 | 5702 | { |
f99d8bf4 PA |
5703 | struct ui_file *stb = mem_fileopen (); |
5704 | struct cleanup *stb_chain = make_cleanup_ui_file_delete (stb); | |
170b53b2 | 5705 | |
f99d8bf4 | 5706 | print_address_symbolic (loc->gdbarch, loc->address, stb, |
22e722e1 | 5707 | demangle, ""); |
0d381245 | 5708 | ui_out_field_stream (uiout, "at", stb); |
170b53b2 UW |
5709 | |
5710 | do_cleanups (stb_chain); | |
0d381245 | 5711 | } |
859825b8 JK |
5712 | else |
5713 | ui_out_field_string (uiout, "pending", b->addr_string); | |
6c95b8df | 5714 | |
b775012e LM |
5715 | if (loc && is_breakpoint (b) |
5716 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
5717 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
5718 | { | |
5719 | ui_out_text (uiout, " ("); | |
5720 | ui_out_field_string (uiout, "evaluated-by", | |
5721 | bp_location_condition_evaluator (loc)); | |
5722 | ui_out_text (uiout, ")"); | |
5723 | } | |
5724 | ||
6c95b8df | 5725 | do_cleanups (old_chain); |
0d381245 VP |
5726 | } |
5727 | ||
269b11a2 PA |
5728 | static const char * |
5729 | bptype_string (enum bptype type) | |
c906108c | 5730 | { |
c4093a6a JM |
5731 | struct ep_type_description |
5732 | { | |
5733 | enum bptype type; | |
5734 | char *description; | |
5735 | }; | |
5736 | static struct ep_type_description bptypes[] = | |
c906108c | 5737 | { |
c5aa993b JM |
5738 | {bp_none, "?deleted?"}, |
5739 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 5740 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
5741 | {bp_until, "until"}, |
5742 | {bp_finish, "finish"}, | |
5743 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 5744 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
5745 | {bp_read_watchpoint, "read watchpoint"}, |
5746 | {bp_access_watchpoint, "acc watchpoint"}, | |
5747 | {bp_longjmp, "longjmp"}, | |
5748 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 5749 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
5750 | {bp_exception, "exception"}, |
5751 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 5752 | {bp_step_resume, "step resume"}, |
2c03e5be | 5753 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
5754 | {bp_watchpoint_scope, "watchpoint scope"}, |
5755 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 5756 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 5757 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 5758 | {bp_thread_event, "thread events"}, |
1900040c | 5759 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 5760 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 5761 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 5762 | {bp_exception_master, "exception master"}, |
ce78b96d | 5763 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 5764 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 5765 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 5766 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 5767 | {bp_dprintf, "dprintf"}, |
4efc6507 | 5768 | {bp_jit_event, "jit events"}, |
0e30163f JK |
5769 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
5770 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 5771 | }; |
269b11a2 PA |
5772 | |
5773 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
5774 | || ((int) type != bptypes[(int) type].type)) | |
5775 | internal_error (__FILE__, __LINE__, | |
5776 | _("bptypes table does not describe type #%d."), | |
5777 | (int) type); | |
5778 | ||
5779 | return bptypes[(int) type].description; | |
5780 | } | |
5781 | ||
5782 | /* Print B to gdb_stdout. */ | |
5783 | ||
5784 | static void | |
5785 | print_one_breakpoint_location (struct breakpoint *b, | |
5786 | struct bp_location *loc, | |
5787 | int loc_number, | |
5788 | struct bp_location **last_loc, | |
269b11a2 PA |
5789 | int allflag) |
5790 | { | |
5791 | struct command_line *l; | |
c2c6d25f | 5792 | static char bpenables[] = "nynny"; |
c906108c | 5793 | |
79a45e25 | 5794 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
5795 | int header_of_multiple = 0; |
5796 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
5797 | struct value_print_options opts; |
5798 | ||
5799 | get_user_print_options (&opts); | |
0d381245 VP |
5800 | |
5801 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
5802 | /* See comment in print_one_breakpoint concerning treatment of |
5803 | breakpoints with single disabled location. */ | |
0d381245 VP |
5804 | if (loc == NULL |
5805 | && (b->loc != NULL | |
5806 | && (b->loc->next != NULL || !b->loc->enabled))) | |
5807 | header_of_multiple = 1; | |
5808 | if (loc == NULL) | |
5809 | loc = b->loc; | |
5810 | ||
c4093a6a JM |
5811 | annotate_record (); |
5812 | ||
5813 | /* 1 */ | |
5814 | annotate_field (0); | |
0d381245 VP |
5815 | if (part_of_multiple) |
5816 | { | |
5817 | char *formatted; | |
0c6773c1 | 5818 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
5819 | ui_out_field_string (uiout, "number", formatted); |
5820 | xfree (formatted); | |
5821 | } | |
5822 | else | |
5823 | { | |
5824 | ui_out_field_int (uiout, "number", b->number); | |
5825 | } | |
c4093a6a JM |
5826 | |
5827 | /* 2 */ | |
5828 | annotate_field (1); | |
0d381245 VP |
5829 | if (part_of_multiple) |
5830 | ui_out_field_skip (uiout, "type"); | |
269b11a2 PA |
5831 | else |
5832 | ui_out_field_string (uiout, "type", bptype_string (b->type)); | |
c4093a6a JM |
5833 | |
5834 | /* 3 */ | |
5835 | annotate_field (2); | |
0d381245 VP |
5836 | if (part_of_multiple) |
5837 | ui_out_field_skip (uiout, "disp"); | |
5838 | else | |
2cec12e5 | 5839 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 5840 | |
c4093a6a JM |
5841 | |
5842 | /* 4 */ | |
5843 | annotate_field (3); | |
0d381245 | 5844 | if (part_of_multiple) |
54e52265 | 5845 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 5846 | else |
4a64f543 MS |
5847 | ui_out_field_fmt (uiout, "enabled", "%c", |
5848 | bpenables[(int) b->enable_state]); | |
54e52265 | 5849 | ui_out_spaces (uiout, 2); |
0d381245 | 5850 | |
c4093a6a JM |
5851 | |
5852 | /* 5 and 6 */ | |
3086aeae | 5853 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 5854 | { |
4a64f543 MS |
5855 | /* Although the print_one can possibly print all locations, |
5856 | calling it here is not likely to get any nice result. So, | |
5857 | make sure there's just one location. */ | |
0d381245 | 5858 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 5859 | b->ops->print_one (b, last_loc); |
0d381245 | 5860 | } |
3086aeae DJ |
5861 | else |
5862 | switch (b->type) | |
5863 | { | |
5864 | case bp_none: | |
5865 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 5866 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 5867 | break; |
c906108c | 5868 | |
3086aeae DJ |
5869 | case bp_watchpoint: |
5870 | case bp_hardware_watchpoint: | |
5871 | case bp_read_watchpoint: | |
5872 | case bp_access_watchpoint: | |
3a5c3e22 PA |
5873 | { |
5874 | struct watchpoint *w = (struct watchpoint *) b; | |
5875 | ||
5876 | /* Field 4, the address, is omitted (which makes the columns | |
5877 | not line up too nicely with the headers, but the effect | |
5878 | is relatively readable). */ | |
5879 | if (opts.addressprint) | |
5880 | ui_out_field_skip (uiout, "addr"); | |
5881 | annotate_field (5); | |
5882 | ui_out_field_string (uiout, "what", w->exp_string); | |
5883 | } | |
3086aeae DJ |
5884 | break; |
5885 | ||
3086aeae DJ |
5886 | case bp_breakpoint: |
5887 | case bp_hardware_breakpoint: | |
5888 | case bp_until: | |
5889 | case bp_finish: | |
5890 | case bp_longjmp: | |
5891 | case bp_longjmp_resume: | |
e2e4d78b | 5892 | case bp_longjmp_call_dummy: |
186c406b TT |
5893 | case bp_exception: |
5894 | case bp_exception_resume: | |
3086aeae | 5895 | case bp_step_resume: |
2c03e5be | 5896 | case bp_hp_step_resume: |
3086aeae DJ |
5897 | case bp_watchpoint_scope: |
5898 | case bp_call_dummy: | |
aa7d318d | 5899 | case bp_std_terminate: |
3086aeae DJ |
5900 | case bp_shlib_event: |
5901 | case bp_thread_event: | |
5902 | case bp_overlay_event: | |
0fd8e87f | 5903 | case bp_longjmp_master: |
aa7d318d | 5904 | case bp_std_terminate_master: |
186c406b | 5905 | case bp_exception_master: |
1042e4c0 | 5906 | case bp_tracepoint: |
7a697b8d | 5907 | case bp_fast_tracepoint: |
0fb4aa4b | 5908 | case bp_static_tracepoint: |
e7e0cddf | 5909 | case bp_dprintf: |
4efc6507 | 5910 | case bp_jit_event: |
0e30163f JK |
5911 | case bp_gnu_ifunc_resolver: |
5912 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 5913 | if (opts.addressprint) |
3086aeae DJ |
5914 | { |
5915 | annotate_field (4); | |
54e52265 | 5916 | if (header_of_multiple) |
0d381245 | 5917 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 5918 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 5919 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 5920 | else |
5af949e3 UW |
5921 | ui_out_field_core_addr (uiout, "addr", |
5922 | loc->gdbarch, loc->address); | |
3086aeae DJ |
5923 | } |
5924 | annotate_field (5); | |
0d381245 | 5925 | if (!header_of_multiple) |
170b53b2 | 5926 | print_breakpoint_location (b, loc); |
0d381245 | 5927 | if (b->loc) |
a6d9a66e | 5928 | *last_loc = b->loc; |
3086aeae DJ |
5929 | break; |
5930 | } | |
c906108c | 5931 | |
6c95b8df PA |
5932 | |
5933 | /* For backward compatibility, don't display inferiors unless there | |
5934 | are several. */ | |
5935 | if (loc != NULL | |
5936 | && !header_of_multiple | |
5937 | && (allflag | |
5938 | || (!gdbarch_has_global_breakpoints (target_gdbarch) | |
5939 | && (number_of_program_spaces () > 1 | |
5940 | || number_of_inferiors () > 1) | |
4a64f543 MS |
5941 | /* LOC is for existing B, it cannot be in |
5942 | moribund_locations and thus having NULL OWNER. */ | |
6c95b8df PA |
5943 | && loc->owner->type != bp_catchpoint))) |
5944 | { | |
5945 | struct inferior *inf; | |
5946 | int first = 1; | |
5947 | ||
5948 | for (inf = inferior_list; inf != NULL; inf = inf->next) | |
5949 | { | |
5950 | if (inf->pspace == loc->pspace) | |
5951 | { | |
5952 | if (first) | |
5953 | { | |
5954 | first = 0; | |
5955 | ui_out_text (uiout, " inf "); | |
5956 | } | |
5957 | else | |
5958 | ui_out_text (uiout, ", "); | |
5959 | ui_out_text (uiout, plongest (inf->num)); | |
5960 | } | |
5961 | } | |
5962 | } | |
5963 | ||
4a306c9a | 5964 | if (!part_of_multiple) |
c4093a6a | 5965 | { |
4a306c9a JB |
5966 | if (b->thread != -1) |
5967 | { | |
5968 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 5969 | "stop only in" line a little further down. */ |
4a306c9a JB |
5970 | ui_out_text (uiout, " thread "); |
5971 | ui_out_field_int (uiout, "thread", b->thread); | |
5972 | } | |
5973 | else if (b->task != 0) | |
5974 | { | |
5975 | ui_out_text (uiout, " task "); | |
5976 | ui_out_field_int (uiout, "task", b->task); | |
5977 | } | |
c4093a6a | 5978 | } |
f1310107 | 5979 | |
8b93c638 | 5980 | ui_out_text (uiout, "\n"); |
f1310107 | 5981 | |
348d480f | 5982 | if (!part_of_multiple) |
f1310107 TJB |
5983 | b->ops->print_one_detail (b, uiout); |
5984 | ||
0d381245 | 5985 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
5986 | { |
5987 | annotate_field (6); | |
8b93c638 | 5988 | ui_out_text (uiout, "\tstop only in stack frame at "); |
e5dd4106 | 5989 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 5990 | the frame ID. */ |
5af949e3 UW |
5991 | ui_out_field_core_addr (uiout, "frame", |
5992 | b->gdbarch, b->frame_id.stack_addr); | |
8b93c638 | 5993 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
5994 | } |
5995 | ||
28010a5d | 5996 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
5997 | { |
5998 | annotate_field (7); | |
d77f58be | 5999 | if (is_tracepoint (b)) |
1042e4c0 SS |
6000 | ui_out_text (uiout, "\ttrace only if "); |
6001 | else | |
6002 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 | 6003 | ui_out_field_string (uiout, "cond", b->cond_string); |
b775012e LM |
6004 | |
6005 | /* Print whether the target is doing the breakpoint's condition | |
6006 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6007 | if (is_breakpoint (b) | |
6008 | && breakpoint_condition_evaluation_mode () | |
6009 | == condition_evaluation_target) | |
6010 | { | |
6011 | ui_out_text (uiout, " ("); | |
6012 | ui_out_field_string (uiout, "evaluated-by", | |
6013 | bp_condition_evaluator (b)); | |
6014 | ui_out_text (uiout, " evals)"); | |
6015 | } | |
0101ce28 JJ |
6016 | ui_out_text (uiout, "\n"); |
6017 | } | |
6018 | ||
0d381245 | 6019 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6020 | { |
4a64f543 | 6021 | /* FIXME should make an annotation for this. */ |
8b93c638 JM |
6022 | ui_out_text (uiout, "\tstop only in thread "); |
6023 | ui_out_field_int (uiout, "thread", b->thread); | |
6024 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
6025 | } |
6026 | ||
63c715c6 | 6027 | if (!part_of_multiple && b->hit_count) |
c4093a6a | 6028 | { |
4a64f543 | 6029 | /* FIXME should make an annotation for this. */ |
c326b90e | 6030 | if (is_catchpoint (b)) |
8b93c638 | 6031 | ui_out_text (uiout, "\tcatchpoint"); |
f196051f SS |
6032 | else if (is_tracepoint (b)) |
6033 | ui_out_text (uiout, "\ttracepoint"); | |
8b93c638 JM |
6034 | else |
6035 | ui_out_text (uiout, "\tbreakpoint"); | |
6036 | ui_out_text (uiout, " already hit "); | |
6037 | ui_out_field_int (uiout, "times", b->hit_count); | |
6038 | if (b->hit_count == 1) | |
6039 | ui_out_text (uiout, " time\n"); | |
6040 | else | |
6041 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
6042 | } |
6043 | ||
4a64f543 MS |
6044 | /* Output the count also if it is zero, but only if this is mi. |
6045 | FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 6046 | if (ui_out_is_mi_like_p (uiout)) |
63c715c6 | 6047 | if (!part_of_multiple && b->hit_count == 0) |
fb40c209 | 6048 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 6049 | |
0d381245 | 6050 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6051 | { |
6052 | annotate_field (8); | |
8b93c638 JM |
6053 | ui_out_text (uiout, "\tignore next "); |
6054 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
6055 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 6056 | } |
059fb39f | 6057 | |
816338b5 SS |
6058 | /* Note that an enable count of 1 corresponds to "enable once" |
6059 | behavior, which is reported by the combination of enablement and | |
6060 | disposition, so we don't need to mention it here. */ | |
6061 | if (!part_of_multiple && b->enable_count > 1) | |
6062 | { | |
6063 | annotate_field (8); | |
6064 | ui_out_text (uiout, "\tdisable after "); | |
6065 | /* Tweak the wording to clarify that ignore and enable counts | |
6066 | are distinct, and have additive effect. */ | |
6067 | if (b->ignore_count) | |
6068 | ui_out_text (uiout, "additional "); | |
6069 | else | |
6070 | ui_out_text (uiout, "next "); | |
6071 | ui_out_field_int (uiout, "enable", b->enable_count); | |
6072 | ui_out_text (uiout, " hits\n"); | |
6073 | } | |
6074 | ||
f196051f SS |
6075 | if (!part_of_multiple && is_tracepoint (b)) |
6076 | { | |
6077 | struct tracepoint *tp = (struct tracepoint *) b; | |
6078 | ||
6079 | if (tp->traceframe_usage) | |
6080 | { | |
6081 | ui_out_text (uiout, "\ttrace buffer usage "); | |
6082 | ui_out_field_int (uiout, "traceframe-usage", tp->traceframe_usage); | |
6083 | ui_out_text (uiout, " bytes\n"); | |
6084 | } | |
6085 | } | |
6086 | ||
d3ce09f5 SS |
6087 | if (!part_of_multiple && b->extra_string |
6088 | && b->type == bp_dprintf && !b->commands) | |
6089 | { | |
6090 | annotate_field (7); | |
6091 | ui_out_text (uiout, "\t(agent printf) "); | |
6092 | ui_out_field_string (uiout, "printf", b->extra_string); | |
6093 | ui_out_text (uiout, "\n"); | |
6094 | } | |
6095 | ||
9add0f1b | 6096 | l = b->commands ? b->commands->commands : NULL; |
059fb39f | 6097 | if (!part_of_multiple && l) |
c4093a6a | 6098 | { |
3b31d625 EZ |
6099 | struct cleanup *script_chain; |
6100 | ||
c4093a6a | 6101 | annotate_field (9); |
3b31d625 | 6102 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 6103 | print_command_lines (uiout, l, 4); |
3b31d625 | 6104 | do_cleanups (script_chain); |
c4093a6a | 6105 | } |
d24317b4 | 6106 | |
d9b3f62e | 6107 | if (is_tracepoint (b)) |
1042e4c0 | 6108 | { |
d9b3f62e PA |
6109 | struct tracepoint *t = (struct tracepoint *) b; |
6110 | ||
6111 | if (!part_of_multiple && t->pass_count) | |
6112 | { | |
6113 | annotate_field (10); | |
6114 | ui_out_text (uiout, "\tpass count "); | |
6115 | ui_out_field_int (uiout, "pass", t->pass_count); | |
6116 | ui_out_text (uiout, " \n"); | |
6117 | } | |
1042e4c0 SS |
6118 | } |
6119 | ||
d24317b4 VP |
6120 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
6121 | { | |
3a5c3e22 PA |
6122 | if (is_watchpoint (b)) |
6123 | { | |
6124 | struct watchpoint *w = (struct watchpoint *) b; | |
6125 | ||
6126 | ui_out_field_string (uiout, "original-location", w->exp_string); | |
6127 | } | |
6128 | else if (b->addr_string) | |
d24317b4 | 6129 | ui_out_field_string (uiout, "original-location", b->addr_string); |
d24317b4 | 6130 | } |
c4093a6a | 6131 | } |
c5aa993b | 6132 | |
0d381245 VP |
6133 | static void |
6134 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6135 | struct bp_location **last_loc, |
6c95b8df | 6136 | int allflag) |
0d381245 | 6137 | { |
8d3788bd | 6138 | struct cleanup *bkpt_chain; |
79a45e25 | 6139 | struct ui_out *uiout = current_uiout; |
8d3788bd VP |
6140 | |
6141 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); | |
6142 | ||
12c5a436 | 6143 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
8d3788bd | 6144 | do_cleanups (bkpt_chain); |
0d381245 VP |
6145 | |
6146 | /* If this breakpoint has custom print function, | |
6147 | it's already printed. Otherwise, print individual | |
6148 | locations, if any. */ | |
6149 | if (b->ops == NULL || b->ops->print_one == NULL) | |
6150 | { | |
4a64f543 MS |
6151 | /* If breakpoint has a single location that is disabled, we |
6152 | print it as if it had several locations, since otherwise it's | |
6153 | hard to represent "breakpoint enabled, location disabled" | |
6154 | situation. | |
6155 | ||
6156 | Note that while hardware watchpoints have several locations | |
a3be7890 | 6157 | internally, that's not a property exposed to user. */ |
0d381245 | 6158 | if (b->loc |
a5606eee | 6159 | && !is_hardware_watchpoint (b) |
8d3788bd | 6160 | && (b->loc->next || !b->loc->enabled)) |
0d381245 VP |
6161 | { |
6162 | struct bp_location *loc; | |
6163 | int n = 1; | |
8d3788bd | 6164 | |
0d381245 | 6165 | for (loc = b->loc; loc; loc = loc->next, ++n) |
8d3788bd VP |
6166 | { |
6167 | struct cleanup *inner2 = | |
6168 | make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
6169 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); | |
6170 | do_cleanups (inner2); | |
6171 | } | |
0d381245 VP |
6172 | } |
6173 | } | |
6174 | } | |
6175 | ||
a6d9a66e UW |
6176 | static int |
6177 | breakpoint_address_bits (struct breakpoint *b) | |
6178 | { | |
6179 | int print_address_bits = 0; | |
6180 | struct bp_location *loc; | |
6181 | ||
6182 | for (loc = b->loc; loc; loc = loc->next) | |
6183 | { | |
c7437ca6 PA |
6184 | int addr_bit; |
6185 | ||
6186 | /* Software watchpoints that aren't watching memory don't have | |
6187 | an address to print. */ | |
6188 | if (b->type == bp_watchpoint && loc->watchpoint_type == -1) | |
6189 | continue; | |
6190 | ||
6191 | addr_bit = gdbarch_addr_bit (loc->gdbarch); | |
a6d9a66e UW |
6192 | if (addr_bit > print_address_bits) |
6193 | print_address_bits = addr_bit; | |
6194 | } | |
6195 | ||
6196 | return print_address_bits; | |
6197 | } | |
0d381245 | 6198 | |
c4093a6a JM |
6199 | struct captured_breakpoint_query_args |
6200 | { | |
6201 | int bnum; | |
6202 | }; | |
c5aa993b | 6203 | |
c4093a6a | 6204 | static int |
2b65245e | 6205 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
6206 | { |
6207 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 6208 | struct breakpoint *b; |
a6d9a66e | 6209 | struct bp_location *dummy_loc = NULL; |
cc59ec59 | 6210 | |
c4093a6a JM |
6211 | ALL_BREAKPOINTS (b) |
6212 | { | |
6213 | if (args->bnum == b->number) | |
c5aa993b | 6214 | { |
12c5a436 | 6215 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6216 | return GDB_RC_OK; |
c5aa993b | 6217 | } |
c4093a6a JM |
6218 | } |
6219 | return GDB_RC_NONE; | |
6220 | } | |
c5aa993b | 6221 | |
c4093a6a | 6222 | enum gdb_rc |
4a64f543 MS |
6223 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, |
6224 | char **error_message) | |
c4093a6a JM |
6225 | { |
6226 | struct captured_breakpoint_query_args args; | |
cc59ec59 | 6227 | |
c4093a6a JM |
6228 | args.bnum = bnum; |
6229 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
4a64f543 | 6230 | an error. */ |
b0b13bb4 DJ |
6231 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
6232 | error_message, RETURN_MASK_ALL) < 0) | |
6233 | return GDB_RC_FAIL; | |
6234 | else | |
6235 | return GDB_RC_OK; | |
c4093a6a | 6236 | } |
c5aa993b | 6237 | |
09d682a4 TT |
6238 | /* Return true if this breakpoint was set by the user, false if it is |
6239 | internal or momentary. */ | |
6240 | ||
6241 | int | |
6242 | user_breakpoint_p (struct breakpoint *b) | |
6243 | { | |
46c6471b | 6244 | return b->number > 0; |
09d682a4 TT |
6245 | } |
6246 | ||
7f3b0473 | 6247 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
6248 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
6249 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
6250 | FILTER is non-NULL, call it on each breakpoint and only include the | |
6251 | ones for which it returns non-zero. Return the total number of | |
6252 | breakpoints listed. */ | |
c906108c | 6253 | |
d77f58be | 6254 | static int |
e5a67952 | 6255 | breakpoint_1 (char *args, int allflag, |
4a64f543 | 6256 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 6257 | { |
52f0bd74 | 6258 | struct breakpoint *b; |
a6d9a66e | 6259 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6260 | int nr_printable_breakpoints; |
3b31d625 | 6261 | struct cleanup *bkpttbl_chain; |
79a45b7d | 6262 | struct value_print_options opts; |
a6d9a66e | 6263 | int print_address_bits = 0; |
269b11a2 | 6264 | int print_type_col_width = 14; |
79a45e25 | 6265 | struct ui_out *uiout = current_uiout; |
269b11a2 | 6266 | |
79a45b7d TT |
6267 | get_user_print_options (&opts); |
6268 | ||
4a64f543 MS |
6269 | /* Compute the number of rows in the table, as well as the size |
6270 | required for address fields. */ | |
7f3b0473 AC |
6271 | nr_printable_breakpoints = 0; |
6272 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6273 | { |
6274 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6275 | if (filter && !filter (b)) | |
6276 | continue; | |
6277 | ||
6278 | /* If we have an "args" string, it is a list of breakpoints to | |
6279 | accept. Skip the others. */ | |
6280 | if (args != NULL && *args != '\0') | |
6281 | { | |
6282 | if (allflag && parse_and_eval_long (args) != b->number) | |
6283 | continue; | |
6284 | if (!allflag && !number_is_in_list (args, b->number)) | |
6285 | continue; | |
6286 | } | |
269b11a2 | 6287 | |
e5a67952 MS |
6288 | if (allflag || user_breakpoint_p (b)) |
6289 | { | |
6290 | int addr_bit, type_len; | |
a6d9a66e | 6291 | |
e5a67952 MS |
6292 | addr_bit = breakpoint_address_bits (b); |
6293 | if (addr_bit > print_address_bits) | |
6294 | print_address_bits = addr_bit; | |
269b11a2 | 6295 | |
e5a67952 MS |
6296 | type_len = strlen (bptype_string (b->type)); |
6297 | if (type_len > print_type_col_width) | |
6298 | print_type_col_width = type_len; | |
6299 | ||
6300 | nr_printable_breakpoints++; | |
6301 | } | |
6302 | } | |
7f3b0473 | 6303 | |
79a45b7d | 6304 | if (opts.addressprint) |
3b31d625 | 6305 | bkpttbl_chain |
3e43a32a MS |
6306 | = make_cleanup_ui_out_table_begin_end (uiout, 6, |
6307 | nr_printable_breakpoints, | |
3b31d625 | 6308 | "BreakpointTable"); |
8b93c638 | 6309 | else |
3b31d625 | 6310 | bkpttbl_chain |
3e43a32a MS |
6311 | = make_cleanup_ui_out_table_begin_end (uiout, 5, |
6312 | nr_printable_breakpoints, | |
3b31d625 | 6313 | "BreakpointTable"); |
8b93c638 | 6314 | |
7f3b0473 | 6315 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
6316 | annotate_breakpoints_headers (); |
6317 | if (nr_printable_breakpoints > 0) | |
6318 | annotate_field (0); | |
4a64f543 | 6319 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
6320 | if (nr_printable_breakpoints > 0) |
6321 | annotate_field (1); | |
269b11a2 | 6322 | ui_out_table_header (uiout, print_type_col_width, ui_left, |
4a64f543 | 6323 | "type", "Type"); /* 2 */ |
d7faa9e7 AC |
6324 | if (nr_printable_breakpoints > 0) |
6325 | annotate_field (2); | |
4a64f543 | 6326 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ |
d7faa9e7 AC |
6327 | if (nr_printable_breakpoints > 0) |
6328 | annotate_field (3); | |
54e52265 | 6329 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 6330 | if (opts.addressprint) |
e5a67952 MS |
6331 | { |
6332 | if (nr_printable_breakpoints > 0) | |
6333 | annotate_field (4); | |
6334 | if (print_address_bits <= 32) | |
6335 | ui_out_table_header (uiout, 10, ui_left, | |
6336 | "addr", "Address"); /* 5 */ | |
6337 | else | |
6338 | ui_out_table_header (uiout, 18, ui_left, | |
6339 | "addr", "Address"); /* 5 */ | |
6340 | } | |
d7faa9e7 AC |
6341 | if (nr_printable_breakpoints > 0) |
6342 | annotate_field (5); | |
6343 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
6344 | ui_out_table_body (uiout); | |
6345 | if (nr_printable_breakpoints > 0) | |
6346 | annotate_breakpoints_table (); | |
7f3b0473 | 6347 | |
c4093a6a | 6348 | ALL_BREAKPOINTS (b) |
e5a67952 MS |
6349 | { |
6350 | QUIT; | |
6351 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6352 | if (filter && !filter (b)) | |
6353 | continue; | |
6354 | ||
6355 | /* If we have an "args" string, it is a list of breakpoints to | |
6356 | accept. Skip the others. */ | |
6357 | ||
6358 | if (args != NULL && *args != '\0') | |
6359 | { | |
6360 | if (allflag) /* maintenance info breakpoint */ | |
6361 | { | |
6362 | if (parse_and_eval_long (args) != b->number) | |
6363 | continue; | |
6364 | } | |
6365 | else /* all others */ | |
6366 | { | |
6367 | if (!number_is_in_list (args, b->number)) | |
6368 | continue; | |
6369 | } | |
6370 | } | |
6371 | /* We only print out user settable breakpoints unless the | |
6372 | allflag is set. */ | |
6373 | if (allflag || user_breakpoint_p (b)) | |
12c5a436 | 6374 | print_one_breakpoint (b, &last_loc, allflag); |
e5a67952 MS |
6375 | } |
6376 | ||
3b31d625 | 6377 | do_cleanups (bkpttbl_chain); |
698384cd | 6378 | |
7f3b0473 | 6379 | if (nr_printable_breakpoints == 0) |
c906108c | 6380 | { |
4a64f543 MS |
6381 | /* If there's a filter, let the caller decide how to report |
6382 | empty list. */ | |
d77f58be SS |
6383 | if (!filter) |
6384 | { | |
e5a67952 | 6385 | if (args == NULL || *args == '\0') |
d77f58be SS |
6386 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); |
6387 | else | |
4a64f543 | 6388 | ui_out_message (uiout, 0, |
e5a67952 MS |
6389 | "No breakpoint or watchpoint matching '%s'.\n", |
6390 | args); | |
d77f58be | 6391 | } |
c906108c SS |
6392 | } |
6393 | else | |
c4093a6a | 6394 | { |
a6d9a66e UW |
6395 | if (last_loc && !server_command) |
6396 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 6397 | } |
c906108c | 6398 | |
4a64f543 | 6399 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6400 | there have been breakpoints? */ |
c906108c | 6401 | annotate_breakpoints_table_end (); |
d77f58be SS |
6402 | |
6403 | return nr_printable_breakpoints; | |
c906108c SS |
6404 | } |
6405 | ||
ad443146 SS |
6406 | /* Display the value of default-collect in a way that is generally |
6407 | compatible with the breakpoint list. */ | |
6408 | ||
6409 | static void | |
6410 | default_collect_info (void) | |
6411 | { | |
79a45e25 PA |
6412 | struct ui_out *uiout = current_uiout; |
6413 | ||
ad443146 SS |
6414 | /* If it has no value (which is frequently the case), say nothing; a |
6415 | message like "No default-collect." gets in user's face when it's | |
6416 | not wanted. */ | |
6417 | if (!*default_collect) | |
6418 | return; | |
6419 | ||
6420 | /* The following phrase lines up nicely with per-tracepoint collect | |
6421 | actions. */ | |
6422 | ui_out_text (uiout, "default collect "); | |
6423 | ui_out_field_string (uiout, "default-collect", default_collect); | |
6424 | ui_out_text (uiout, " \n"); | |
6425 | } | |
6426 | ||
c906108c | 6427 | static void |
e5a67952 | 6428 | breakpoints_info (char *args, int from_tty) |
c906108c | 6429 | { |
e5a67952 | 6430 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
6431 | |
6432 | default_collect_info (); | |
d77f58be SS |
6433 | } |
6434 | ||
6435 | static void | |
e5a67952 | 6436 | watchpoints_info (char *args, int from_tty) |
d77f58be | 6437 | { |
e5a67952 | 6438 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
79a45e25 | 6439 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6440 | |
6441 | if (num_printed == 0) | |
6442 | { | |
e5a67952 | 6443 | if (args == NULL || *args == '\0') |
d77f58be SS |
6444 | ui_out_message (uiout, 0, "No watchpoints.\n"); |
6445 | else | |
e5a67952 | 6446 | ui_out_message (uiout, 0, "No watchpoint matching '%s'.\n", args); |
d77f58be | 6447 | } |
c906108c SS |
6448 | } |
6449 | ||
7a292a7a | 6450 | static void |
e5a67952 | 6451 | maintenance_info_breakpoints (char *args, int from_tty) |
c906108c | 6452 | { |
e5a67952 | 6453 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
6454 | |
6455 | default_collect_info (); | |
c906108c SS |
6456 | } |
6457 | ||
0d381245 | 6458 | static int |
714835d5 | 6459 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6460 | struct program_space *pspace, |
714835d5 | 6461 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6462 | { |
6463 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6464 | |
0d381245 VP |
6465 | for (; bl; bl = bl->next) |
6466 | { | |
6c95b8df PA |
6467 | if (bl->pspace == pspace |
6468 | && bl->address == pc | |
0d381245 VP |
6469 | && (!overlay_debugging || bl->section == section)) |
6470 | return 1; | |
6471 | } | |
6472 | return 0; | |
6473 | } | |
6474 | ||
672f9b60 | 6475 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6476 | concerns with logical breakpoints, so we match program spaces, not |
6477 | address spaces. */ | |
c906108c SS |
6478 | |
6479 | static void | |
6c95b8df PA |
6480 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6481 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6482 | struct obj_section *section, int thread) |
c906108c | 6483 | { |
52f0bd74 AC |
6484 | int others = 0; |
6485 | struct breakpoint *b; | |
c906108c SS |
6486 | |
6487 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
6488 | others += (user_breakpoint_p (b) |
6489 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
6490 | if (others > 0) |
6491 | { | |
a3f17187 AC |
6492 | if (others == 1) |
6493 | printf_filtered (_("Note: breakpoint ")); | |
6494 | else /* if (others == ???) */ | |
6495 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6496 | ALL_BREAKPOINTS (b) |
672f9b60 | 6497 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6498 | { |
6499 | others--; | |
6500 | printf_filtered ("%d", b->number); | |
6501 | if (b->thread == -1 && thread != -1) | |
6502 | printf_filtered (" (all threads)"); | |
6503 | else if (b->thread != -1) | |
6504 | printf_filtered (" (thread %d)", b->thread); | |
6505 | printf_filtered ("%s%s ", | |
059fb39f | 6506 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6507 | || b->enable_state == bp_call_disabled) |
0d381245 VP |
6508 | ? " (disabled)" |
6509 | : b->enable_state == bp_permanent | |
6510 | ? " (permanent)" | |
6511 | : ""), | |
6512 | (others > 1) ? "," | |
6513 | : ((others == 1) ? " and" : "")); | |
6514 | } | |
a3f17187 | 6515 | printf_filtered (_("also set at pc ")); |
5af949e3 | 6516 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
6517 | printf_filtered (".\n"); |
6518 | } | |
6519 | } | |
6520 | \f | |
c906108c | 6521 | |
e4f237da KB |
6522 | /* Return true iff it is meaningful to use the address member of |
6523 | BPT. For some breakpoint types, the address member is irrelevant | |
6524 | and it makes no sense to attempt to compare it to other addresses | |
6525 | (or use it for any other purpose either). | |
6526 | ||
4a64f543 MS |
6527 | More specifically, each of the following breakpoint types will |
6528 | always have a zero valued address and we don't want to mark | |
6529 | breakpoints of any of these types to be a duplicate of an actual | |
6530 | breakpoint at address zero: | |
e4f237da KB |
6531 | |
6532 | bp_watchpoint | |
2d134ed3 PA |
6533 | bp_catchpoint |
6534 | ||
6535 | */ | |
e4f237da KB |
6536 | |
6537 | static int | |
6538 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
6539 | { | |
6540 | enum bptype type = bpt->type; | |
6541 | ||
2d134ed3 PA |
6542 | return (type != bp_watchpoint && type != bp_catchpoint); |
6543 | } | |
6544 | ||
6545 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6546 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6547 | ||
6548 | static int | |
4a64f543 MS |
6549 | watchpoint_locations_match (struct bp_location *loc1, |
6550 | struct bp_location *loc2) | |
2d134ed3 | 6551 | { |
3a5c3e22 PA |
6552 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6553 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6554 | ||
6555 | /* Both of them must exist. */ | |
6556 | gdb_assert (w1 != NULL); | |
6557 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6558 | |
4a64f543 MS |
6559 | /* If the target can evaluate the condition expression in hardware, |
6560 | then we we need to insert both watchpoints even if they are at | |
6561 | the same place. Otherwise the watchpoint will only trigger when | |
6562 | the condition of whichever watchpoint was inserted evaluates to | |
6563 | true, not giving a chance for GDB to check the condition of the | |
6564 | other watchpoint. */ | |
3a5c3e22 | 6565 | if ((w1->cond_exp |
4a64f543 MS |
6566 | && target_can_accel_watchpoint_condition (loc1->address, |
6567 | loc1->length, | |
0cf6dd15 | 6568 | loc1->watchpoint_type, |
3a5c3e22 PA |
6569 | w1->cond_exp)) |
6570 | || (w2->cond_exp | |
4a64f543 MS |
6571 | && target_can_accel_watchpoint_condition (loc2->address, |
6572 | loc2->length, | |
0cf6dd15 | 6573 | loc2->watchpoint_type, |
3a5c3e22 | 6574 | w2->cond_exp))) |
0cf6dd15 TJB |
6575 | return 0; |
6576 | ||
85d721b8 PA |
6577 | /* Note that this checks the owner's type, not the location's. In |
6578 | case the target does not support read watchpoints, but does | |
6579 | support access watchpoints, we'll have bp_read_watchpoint | |
6580 | watchpoints with hw_access locations. Those should be considered | |
6581 | duplicates of hw_read locations. The hw_read locations will | |
6582 | become hw_access locations later. */ | |
2d134ed3 PA |
6583 | return (loc1->owner->type == loc2->owner->type |
6584 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6585 | && loc1->address == loc2->address | |
6586 | && loc1->length == loc2->length); | |
e4f237da KB |
6587 | } |
6588 | ||
6c95b8df PA |
6589 | /* Returns true if {ASPACE1,ADDR1} and {ASPACE2,ADDR2} represent the |
6590 | same breakpoint location. In most targets, this can only be true | |
6591 | if ASPACE1 matches ASPACE2. On targets that have global | |
6592 | breakpoints, the address space doesn't really matter. */ | |
6593 | ||
6594 | static int | |
6595 | breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1, | |
6596 | struct address_space *aspace2, CORE_ADDR addr2) | |
6597 | { | |
6598 | return ((gdbarch_has_global_breakpoints (target_gdbarch) | |
6599 | || aspace1 == aspace2) | |
6600 | && addr1 == addr2); | |
6601 | } | |
6602 | ||
f1310107 TJB |
6603 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6604 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6605 | matches ASPACE2. On targets that have global breakpoints, the address | |
6606 | space doesn't really matter. */ | |
6607 | ||
6608 | static int | |
6609 | breakpoint_address_match_range (struct address_space *aspace1, CORE_ADDR addr1, | |
6610 | int len1, struct address_space *aspace2, | |
6611 | CORE_ADDR addr2) | |
6612 | { | |
6613 | return ((gdbarch_has_global_breakpoints (target_gdbarch) | |
6614 | || aspace1 == aspace2) | |
6615 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6616 | } | |
6617 | ||
6618 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6619 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6620 | matches the breakpoint's address space. On targets that have global | |
6621 | breakpoints, the address space doesn't really matter. */ | |
6622 | ||
6623 | static int | |
6624 | breakpoint_location_address_match (struct bp_location *bl, | |
6625 | struct address_space *aspace, | |
6626 | CORE_ADDR addr) | |
6627 | { | |
6628 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6629 | aspace, addr) | |
6630 | || (bl->length | |
6631 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6632 | bl->address, bl->length, | |
6633 | aspace, addr))); | |
6634 | } | |
6635 | ||
1e4d1764 YQ |
6636 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6637 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6638 | true, otherwise returns false. */ | |
6639 | ||
6640 | static int | |
6641 | tracepoint_locations_match (struct bp_location *loc1, | |
6642 | struct bp_location *loc2) | |
6643 | { | |
6644 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6645 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6646 | locations at the same address of different tracepoints are regarded as | |
6647 | different locations. */ | |
6648 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
6649 | else | |
6650 | return 0; | |
6651 | } | |
6652 | ||
2d134ed3 PA |
6653 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
6654 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
6655 | represent the same location. */ | |
6656 | ||
6657 | static int | |
4a64f543 MS |
6658 | breakpoint_locations_match (struct bp_location *loc1, |
6659 | struct bp_location *loc2) | |
2d134ed3 | 6660 | { |
2bdf28a0 JK |
6661 | int hw_point1, hw_point2; |
6662 | ||
6663 | /* Both of them must not be in moribund_locations. */ | |
6664 | gdb_assert (loc1->owner != NULL); | |
6665 | gdb_assert (loc2->owner != NULL); | |
6666 | ||
6667 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
6668 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
6669 | |
6670 | if (hw_point1 != hw_point2) | |
6671 | return 0; | |
6672 | else if (hw_point1) | |
6673 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
6674 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
6675 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 6676 | else |
f1310107 TJB |
6677 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
6678 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
6679 | loc2->pspace->aspace, loc2->address) | |
6680 | && loc1->length == loc2->length); | |
2d134ed3 PA |
6681 | } |
6682 | ||
76897487 KB |
6683 | static void |
6684 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
6685 | int bnum, int have_bnum) | |
6686 | { | |
f63fbe86 MS |
6687 | /* The longest string possibly returned by hex_string_custom |
6688 | is 50 chars. These must be at least that big for safety. */ | |
6689 | char astr1[64]; | |
6690 | char astr2[64]; | |
76897487 | 6691 | |
bb599908 PH |
6692 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
6693 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 6694 | if (have_bnum) |
8a3fe4f8 | 6695 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
6696 | bnum, astr1, astr2); |
6697 | else | |
8a3fe4f8 | 6698 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
6699 | } |
6700 | ||
4a64f543 MS |
6701 | /* Adjust a breakpoint's address to account for architectural |
6702 | constraints on breakpoint placement. Return the adjusted address. | |
6703 | Note: Very few targets require this kind of adjustment. For most | |
6704 | targets, this function is simply the identity function. */ | |
76897487 KB |
6705 | |
6706 | static CORE_ADDR | |
a6d9a66e UW |
6707 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
6708 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 6709 | { |
a6d9a66e | 6710 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
6711 | { |
6712 | /* Very few targets need any kind of breakpoint adjustment. */ | |
6713 | return bpaddr; | |
6714 | } | |
88f7da05 KB |
6715 | else if (bptype == bp_watchpoint |
6716 | || bptype == bp_hardware_watchpoint | |
6717 | || bptype == bp_read_watchpoint | |
6718 | || bptype == bp_access_watchpoint | |
fe798b75 | 6719 | || bptype == bp_catchpoint) |
88f7da05 KB |
6720 | { |
6721 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
6722 | have their addresses modified. */ | |
6723 | return bpaddr; | |
6724 | } | |
76897487 KB |
6725 | else |
6726 | { | |
6727 | CORE_ADDR adjusted_bpaddr; | |
6728 | ||
6729 | /* Some targets have architectural constraints on the placement | |
6730 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 6731 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
6732 | |
6733 | /* An adjusted breakpoint address can significantly alter | |
6734 | a user's expectations. Print a warning if an adjustment | |
6735 | is required. */ | |
6736 | if (adjusted_bpaddr != bpaddr) | |
6737 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
6738 | ||
6739 | return adjusted_bpaddr; | |
6740 | } | |
6741 | } | |
6742 | ||
28010a5d PA |
6743 | void |
6744 | init_bp_location (struct bp_location *loc, const struct bp_location_ops *ops, | |
6745 | struct breakpoint *owner) | |
7cc221ef | 6746 | { |
7cc221ef DJ |
6747 | memset (loc, 0, sizeof (*loc)); |
6748 | ||
348d480f PA |
6749 | gdb_assert (ops != NULL); |
6750 | ||
28010a5d PA |
6751 | loc->ops = ops; |
6752 | loc->owner = owner; | |
511a6cd4 | 6753 | loc->cond = NULL; |
b775012e | 6754 | loc->cond_bytecode = NULL; |
0d381245 VP |
6755 | loc->shlib_disabled = 0; |
6756 | loc->enabled = 1; | |
e049a4b5 | 6757 | |
28010a5d | 6758 | switch (owner->type) |
e049a4b5 DJ |
6759 | { |
6760 | case bp_breakpoint: | |
6761 | case bp_until: | |
6762 | case bp_finish: | |
6763 | case bp_longjmp: | |
6764 | case bp_longjmp_resume: | |
e2e4d78b | 6765 | case bp_longjmp_call_dummy: |
186c406b TT |
6766 | case bp_exception: |
6767 | case bp_exception_resume: | |
e049a4b5 | 6768 | case bp_step_resume: |
2c03e5be | 6769 | case bp_hp_step_resume: |
e049a4b5 DJ |
6770 | case bp_watchpoint_scope: |
6771 | case bp_call_dummy: | |
aa7d318d | 6772 | case bp_std_terminate: |
e049a4b5 DJ |
6773 | case bp_shlib_event: |
6774 | case bp_thread_event: | |
6775 | case bp_overlay_event: | |
4efc6507 | 6776 | case bp_jit_event: |
0fd8e87f | 6777 | case bp_longjmp_master: |
aa7d318d | 6778 | case bp_std_terminate_master: |
186c406b | 6779 | case bp_exception_master: |
0e30163f JK |
6780 | case bp_gnu_ifunc_resolver: |
6781 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 6782 | case bp_dprintf: |
e049a4b5 | 6783 | loc->loc_type = bp_loc_software_breakpoint; |
b775012e | 6784 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
6785 | break; |
6786 | case bp_hardware_breakpoint: | |
6787 | loc->loc_type = bp_loc_hardware_breakpoint; | |
b775012e | 6788 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
6789 | break; |
6790 | case bp_hardware_watchpoint: | |
6791 | case bp_read_watchpoint: | |
6792 | case bp_access_watchpoint: | |
6793 | loc->loc_type = bp_loc_hardware_watchpoint; | |
6794 | break; | |
6795 | case bp_watchpoint: | |
ce78b96d | 6796 | case bp_catchpoint: |
15c3d785 PA |
6797 | case bp_tracepoint: |
6798 | case bp_fast_tracepoint: | |
0fb4aa4b | 6799 | case bp_static_tracepoint: |
e049a4b5 DJ |
6800 | loc->loc_type = bp_loc_other; |
6801 | break; | |
6802 | default: | |
e2e0b3e5 | 6803 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
6804 | } |
6805 | ||
f431efe5 | 6806 | loc->refc = 1; |
28010a5d PA |
6807 | } |
6808 | ||
6809 | /* Allocate a struct bp_location. */ | |
6810 | ||
6811 | static struct bp_location * | |
6812 | allocate_bp_location (struct breakpoint *bpt) | |
6813 | { | |
348d480f PA |
6814 | return bpt->ops->allocate_location (bpt); |
6815 | } | |
7cc221ef | 6816 | |
f431efe5 PA |
6817 | static void |
6818 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 6819 | { |
348d480f | 6820 | loc->ops->dtor (loc); |
fe3f5fa8 VP |
6821 | xfree (loc); |
6822 | } | |
6823 | ||
f431efe5 PA |
6824 | /* Increment reference count. */ |
6825 | ||
6826 | static void | |
6827 | incref_bp_location (struct bp_location *bl) | |
6828 | { | |
6829 | ++bl->refc; | |
6830 | } | |
6831 | ||
6832 | /* Decrement reference count. If the reference count reaches 0, | |
6833 | destroy the bp_location. Sets *BLP to NULL. */ | |
6834 | ||
6835 | static void | |
6836 | decref_bp_location (struct bp_location **blp) | |
6837 | { | |
0807b50c PA |
6838 | gdb_assert ((*blp)->refc > 0); |
6839 | ||
f431efe5 PA |
6840 | if (--(*blp)->refc == 0) |
6841 | free_bp_location (*blp); | |
6842 | *blp = NULL; | |
6843 | } | |
6844 | ||
346774a9 | 6845 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 6846 | |
346774a9 PA |
6847 | static void |
6848 | add_to_breakpoint_chain (struct breakpoint *b) | |
c906108c | 6849 | { |
346774a9 | 6850 | struct breakpoint *b1; |
c906108c | 6851 | |
346774a9 PA |
6852 | /* Add this breakpoint to the end of the chain so that a list of |
6853 | breakpoints will come out in order of increasing numbers. */ | |
6854 | ||
6855 | b1 = breakpoint_chain; | |
6856 | if (b1 == 0) | |
6857 | breakpoint_chain = b; | |
6858 | else | |
6859 | { | |
6860 | while (b1->next) | |
6861 | b1 = b1->next; | |
6862 | b1->next = b; | |
6863 | } | |
6864 | } | |
6865 | ||
6866 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
6867 | ||
6868 | static void | |
6869 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
6870 | struct gdbarch *gdbarch, | |
28010a5d | 6871 | enum bptype bptype, |
c0a91b2b | 6872 | const struct breakpoint_ops *ops) |
346774a9 | 6873 | { |
c906108c | 6874 | memset (b, 0, sizeof (*b)); |
2219d63c | 6875 | |
348d480f PA |
6876 | gdb_assert (ops != NULL); |
6877 | ||
28010a5d | 6878 | b->ops = ops; |
4d28f7a8 | 6879 | b->type = bptype; |
a6d9a66e | 6880 | b->gdbarch = gdbarch; |
c906108c SS |
6881 | b->language = current_language->la_language; |
6882 | b->input_radix = input_radix; | |
6883 | b->thread = -1; | |
b5de0fa7 | 6884 | b->enable_state = bp_enabled; |
c906108c SS |
6885 | b->next = 0; |
6886 | b->silent = 0; | |
6887 | b->ignore_count = 0; | |
6888 | b->commands = NULL; | |
818dd999 | 6889 | b->frame_id = null_frame_id; |
0d381245 | 6890 | b->condition_not_parsed = 0; |
84f4c1fe | 6891 | b->py_bp_object = NULL; |
d0fb5eae | 6892 | b->related_breakpoint = b; |
346774a9 PA |
6893 | } |
6894 | ||
6895 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
6896 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
6897 | |
6898 | static struct breakpoint * | |
6899 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 6900 | enum bptype bptype, |
c0a91b2b | 6901 | const struct breakpoint_ops *ops) |
346774a9 PA |
6902 | { |
6903 | struct breakpoint *b = XNEW (struct breakpoint); | |
6904 | ||
348d480f | 6905 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
c56053d2 | 6906 | add_to_breakpoint_chain (b); |
0d381245 VP |
6907 | return b; |
6908 | } | |
6909 | ||
0e30163f JK |
6910 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
6911 | resolutions should be made as the user specified the location explicitly | |
6912 | enough. */ | |
6913 | ||
0d381245 | 6914 | static void |
0e30163f | 6915 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 6916 | { |
2bdf28a0 JK |
6917 | gdb_assert (loc->owner != NULL); |
6918 | ||
0d381245 | 6919 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 6920 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 6921 | || is_tracepoint (loc->owner)) |
0d381245 | 6922 | { |
0e30163f | 6923 | int is_gnu_ifunc; |
2c02bd72 | 6924 | const char *function_name; |
6a3a010b | 6925 | CORE_ADDR func_addr; |
0e30163f | 6926 | |
2c02bd72 | 6927 | find_pc_partial_function_gnu_ifunc (loc->address, &function_name, |
6a3a010b | 6928 | &func_addr, NULL, &is_gnu_ifunc); |
0e30163f JK |
6929 | |
6930 | if (is_gnu_ifunc && !explicit_loc) | |
6931 | { | |
6932 | struct breakpoint *b = loc->owner; | |
6933 | ||
6934 | gdb_assert (loc->pspace == current_program_space); | |
2c02bd72 | 6935 | if (gnu_ifunc_resolve_name (function_name, |
0e30163f JK |
6936 | &loc->requested_address)) |
6937 | { | |
6938 | /* Recalculate ADDRESS based on new REQUESTED_ADDRESS. */ | |
6939 | loc->address = adjust_breakpoint_address (loc->gdbarch, | |
6940 | loc->requested_address, | |
6941 | b->type); | |
6942 | } | |
6943 | else if (b->type == bp_breakpoint && b->loc == loc | |
6944 | && loc->next == NULL && b->related_breakpoint == b) | |
6945 | { | |
6946 | /* Create only the whole new breakpoint of this type but do not | |
6947 | mess more complicated breakpoints with multiple locations. */ | |
6948 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b MR |
6949 | /* Remember the resolver's address for use by the return |
6950 | breakpoint. */ | |
6951 | loc->related_address = func_addr; | |
0e30163f JK |
6952 | } |
6953 | } | |
6954 | ||
2c02bd72 DE |
6955 | if (function_name) |
6956 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
6957 | } |
6958 | } | |
6959 | ||
a6d9a66e | 6960 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 6961 | struct gdbarch * |
a6d9a66e UW |
6962 | get_sal_arch (struct symtab_and_line sal) |
6963 | { | |
6964 | if (sal.section) | |
6965 | return get_objfile_arch (sal.section->objfile); | |
6966 | if (sal.symtab) | |
6967 | return get_objfile_arch (sal.symtab->objfile); | |
6968 | ||
6969 | return NULL; | |
6970 | } | |
6971 | ||
346774a9 PA |
6972 | /* Low level routine for partially initializing a breakpoint of type |
6973 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 6974 | file name, and line number are provided by SAL. |
0d381245 VP |
6975 | |
6976 | It is expected that the caller will complete the initialization of | |
6977 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 6978 | information regarding the creation of a new breakpoint. */ |
0d381245 | 6979 | |
346774a9 PA |
6980 | static void |
6981 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 6982 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 6983 | const struct breakpoint_ops *ops) |
0d381245 | 6984 | { |
28010a5d | 6985 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 6986 | |
3742cc8b | 6987 | add_location_to_breakpoint (b, &sal); |
0d381245 | 6988 | |
6c95b8df PA |
6989 | if (bptype != bp_catchpoint) |
6990 | gdb_assert (sal.pspace != NULL); | |
6991 | ||
f8eba3c6 TT |
6992 | /* Store the program space that was used to set the breakpoint, |
6993 | except for ordinary breakpoints, which are independent of the | |
6994 | program space. */ | |
6995 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
6996 | b->pspace = sal.pspace; | |
0d381245 | 6997 | |
c906108c | 6998 | breakpoints_changed (); |
346774a9 | 6999 | } |
c906108c | 7000 | |
346774a9 PA |
7001 | /* set_raw_breakpoint is a low level routine for allocating and |
7002 | partially initializing a breakpoint of type BPTYPE. The newly | |
7003 | created breakpoint's address, section, source file name, and line | |
7004 | number are provided by SAL. The newly created and partially | |
7005 | initialized breakpoint is added to the breakpoint chain and | |
7006 | is also returned as the value of this function. | |
7007 | ||
7008 | It is expected that the caller will complete the initialization of | |
7009 | the newly created breakpoint struct as well as output any status | |
7010 | information regarding the creation of a new breakpoint. In | |
7011 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7012 | number! Care should be taken to not allow an error to occur | |
7013 | prior to completing the initialization of the breakpoint. If this | |
7014 | should happen, a bogus breakpoint will be left on the chain. */ | |
7015 | ||
7016 | struct breakpoint * | |
7017 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7018 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7019 | const struct breakpoint_ops *ops) |
346774a9 PA |
7020 | { |
7021 | struct breakpoint *b = XNEW (struct breakpoint); | |
7022 | ||
348d480f | 7023 | init_raw_breakpoint (b, gdbarch, sal, bptype, ops); |
c56053d2 | 7024 | add_to_breakpoint_chain (b); |
c906108c SS |
7025 | return b; |
7026 | } | |
7027 | ||
c2c6d25f JM |
7028 | |
7029 | /* Note that the breakpoint object B describes a permanent breakpoint | |
7030 | instruction, hard-wired into the inferior's code. */ | |
7031 | void | |
7032 | make_breakpoint_permanent (struct breakpoint *b) | |
7033 | { | |
0d381245 | 7034 | struct bp_location *bl; |
cc59ec59 | 7035 | |
b5de0fa7 | 7036 | b->enable_state = bp_permanent; |
c2c6d25f | 7037 | |
4a64f543 MS |
7038 | /* By definition, permanent breakpoints are already present in the |
7039 | code. Mark all locations as inserted. For now, | |
7040 | make_breakpoint_permanent is called in just one place, so it's | |
7041 | hard to say if it's reasonable to have permanent breakpoint with | |
e5dd4106 | 7042 | multiple locations or not, but it's easy to implement. */ |
0d381245 VP |
7043 | for (bl = b->loc; bl; bl = bl->next) |
7044 | bl->inserted = 1; | |
c2c6d25f JM |
7045 | } |
7046 | ||
53a5351d | 7047 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7048 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7049 | initiated the operation. */ | |
c906108c SS |
7050 | |
7051 | void | |
186c406b | 7052 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7053 | { |
35df4500 | 7054 | struct breakpoint *b, *b_tmp; |
186c406b | 7055 | int thread = tp->num; |
0fd8e87f UW |
7056 | |
7057 | /* To avoid having to rescan all objfile symbols at every step, | |
7058 | we maintain a list of continually-inserted but always disabled | |
7059 | longjmp "master" breakpoints. Here, we simply create momentary | |
7060 | clones of those and enable them for the requested thread. */ | |
35df4500 | 7061 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 7062 | if (b->pspace == current_program_space |
186c406b TT |
7063 | && (b->type == bp_longjmp_master |
7064 | || b->type == bp_exception_master)) | |
0fd8e87f | 7065 | { |
06edf0c0 PA |
7066 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7067 | struct breakpoint *clone; | |
cc59ec59 | 7068 | |
e2e4d78b JK |
7069 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7070 | after their removal. */ | |
06edf0c0 | 7071 | clone = momentary_breakpoint_from_master (b, type, |
e2e4d78b | 7072 | &longjmp_breakpoint_ops); |
0fd8e87f UW |
7073 | clone->thread = thread; |
7074 | } | |
186c406b TT |
7075 | |
7076 | tp->initiating_frame = frame; | |
c906108c SS |
7077 | } |
7078 | ||
611c83ae | 7079 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7080 | void |
611c83ae | 7081 | delete_longjmp_breakpoint (int thread) |
c906108c | 7082 | { |
35df4500 | 7083 | struct breakpoint *b, *b_tmp; |
c906108c | 7084 | |
35df4500 | 7085 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 7086 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7087 | { |
7088 | if (b->thread == thread) | |
7089 | delete_breakpoint (b); | |
7090 | } | |
c906108c SS |
7091 | } |
7092 | ||
f59f708a PA |
7093 | void |
7094 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7095 | { | |
7096 | struct breakpoint *b, *b_tmp; | |
7097 | ||
7098 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7099 | if (b->type == bp_longjmp || b->type == bp_exception) | |
7100 | { | |
7101 | if (b->thread == thread) | |
7102 | b->disposition = disp_del_at_next_stop; | |
7103 | } | |
7104 | } | |
7105 | ||
e2e4d78b JK |
7106 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7107 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7108 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7109 | breakpoints. */ | |
7110 | ||
7111 | struct breakpoint * | |
7112 | set_longjmp_breakpoint_for_call_dummy (void) | |
7113 | { | |
7114 | struct breakpoint *b, *retval = NULL; | |
7115 | ||
7116 | ALL_BREAKPOINTS (b) | |
7117 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
7118 | { | |
7119 | struct breakpoint *new_b; | |
7120 | ||
7121 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
7122 | &momentary_breakpoint_ops); | |
7123 | new_b->thread = pid_to_thread_id (inferior_ptid); | |
7124 | ||
7125 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7126 | ||
7127 | gdb_assert (new_b->related_breakpoint == new_b); | |
7128 | if (retval == NULL) | |
7129 | retval = new_b; | |
7130 | new_b->related_breakpoint = retval; | |
7131 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7132 | retval = retval->related_breakpoint; | |
7133 | retval->related_breakpoint = new_b; | |
7134 | } | |
7135 | ||
7136 | return retval; | |
7137 | } | |
7138 | ||
7139 | /* Verify all existing dummy frames and their associated breakpoints for | |
7140 | THREAD. Remove those which can no longer be found in the current frame | |
7141 | stack. | |
7142 | ||
7143 | You should call this function only at places where it is safe to currently | |
7144 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7145 | frames. */ | |
7146 | ||
7147 | void | |
7148 | check_longjmp_breakpoint_for_call_dummy (int thread) | |
7149 | { | |
7150 | struct breakpoint *b, *b_tmp; | |
7151 | ||
7152 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7153 | if (b->type == bp_longjmp_call_dummy && b->thread == thread) | |
7154 | { | |
7155 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7156 | ||
7157 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7158 | dummy_b = dummy_b->related_breakpoint; | |
7159 | if (dummy_b->type != bp_call_dummy | |
7160 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7161 | continue; | |
7162 | ||
7163 | dummy_frame_discard (dummy_b->frame_id); | |
7164 | ||
7165 | while (b->related_breakpoint != b) | |
7166 | { | |
7167 | if (b_tmp == b->related_breakpoint) | |
7168 | b_tmp = b->related_breakpoint->next; | |
7169 | delete_breakpoint (b->related_breakpoint); | |
7170 | } | |
7171 | delete_breakpoint (b); | |
7172 | } | |
7173 | } | |
7174 | ||
1900040c MS |
7175 | void |
7176 | enable_overlay_breakpoints (void) | |
7177 | { | |
52f0bd74 | 7178 | struct breakpoint *b; |
1900040c MS |
7179 | |
7180 | ALL_BREAKPOINTS (b) | |
7181 | if (b->type == bp_overlay_event) | |
7182 | { | |
7183 | b->enable_state = bp_enabled; | |
b60e7edf | 7184 | update_global_location_list (1); |
c02f5703 | 7185 | overlay_events_enabled = 1; |
1900040c MS |
7186 | } |
7187 | } | |
7188 | ||
7189 | void | |
7190 | disable_overlay_breakpoints (void) | |
7191 | { | |
52f0bd74 | 7192 | struct breakpoint *b; |
1900040c MS |
7193 | |
7194 | ALL_BREAKPOINTS (b) | |
7195 | if (b->type == bp_overlay_event) | |
7196 | { | |
7197 | b->enable_state = bp_disabled; | |
b60e7edf | 7198 | update_global_location_list (0); |
c02f5703 | 7199 | overlay_events_enabled = 0; |
1900040c MS |
7200 | } |
7201 | } | |
7202 | ||
aa7d318d TT |
7203 | /* Set an active std::terminate breakpoint for each std::terminate |
7204 | master breakpoint. */ | |
7205 | void | |
7206 | set_std_terminate_breakpoint (void) | |
7207 | { | |
35df4500 | 7208 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7209 | |
35df4500 | 7210 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7211 | if (b->pspace == current_program_space |
7212 | && b->type == bp_std_terminate_master) | |
7213 | { | |
06edf0c0 PA |
7214 | momentary_breakpoint_from_master (b, bp_std_terminate, |
7215 | &momentary_breakpoint_ops); | |
aa7d318d TT |
7216 | } |
7217 | } | |
7218 | ||
7219 | /* Delete all the std::terminate breakpoints. */ | |
7220 | void | |
7221 | delete_std_terminate_breakpoint (void) | |
7222 | { | |
35df4500 | 7223 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7224 | |
35df4500 | 7225 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7226 | if (b->type == bp_std_terminate) |
7227 | delete_breakpoint (b); | |
7228 | } | |
7229 | ||
c4093a6a | 7230 | struct breakpoint * |
a6d9a66e | 7231 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7232 | { |
7233 | struct breakpoint *b; | |
c4093a6a | 7234 | |
06edf0c0 PA |
7235 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7236 | &internal_breakpoint_ops); | |
7237 | ||
b5de0fa7 | 7238 | b->enable_state = bp_enabled; |
c4093a6a | 7239 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5af949e3 UW |
7240 | b->addr_string |
7241 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
c4093a6a | 7242 | |
b60e7edf | 7243 | update_global_location_list_nothrow (1); |
74960c60 | 7244 | |
c4093a6a JM |
7245 | return b; |
7246 | } | |
7247 | ||
7248 | void | |
7249 | remove_thread_event_breakpoints (void) | |
7250 | { | |
35df4500 | 7251 | struct breakpoint *b, *b_tmp; |
c4093a6a | 7252 | |
35df4500 | 7253 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7254 | if (b->type == bp_thread_event |
7255 | && b->loc->pspace == current_program_space) | |
c4093a6a JM |
7256 | delete_breakpoint (b); |
7257 | } | |
7258 | ||
0101ce28 JJ |
7259 | struct lang_and_radix |
7260 | { | |
7261 | enum language lang; | |
7262 | int radix; | |
7263 | }; | |
7264 | ||
4efc6507 DE |
7265 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7266 | ||
7267 | struct breakpoint * | |
7268 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7269 | { | |
7270 | struct breakpoint *b; | |
7271 | ||
06edf0c0 PA |
7272 | b = create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7273 | &internal_breakpoint_ops); | |
4efc6507 DE |
7274 | update_global_location_list_nothrow (1); |
7275 | return b; | |
7276 | } | |
0101ce28 | 7277 | |
03673fc7 PP |
7278 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7279 | ||
7280 | void | |
7281 | remove_jit_event_breakpoints (void) | |
7282 | { | |
7283 | struct breakpoint *b, *b_tmp; | |
7284 | ||
7285 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7286 | if (b->type == bp_jit_event | |
7287 | && b->loc->pspace == current_program_space) | |
7288 | delete_breakpoint (b); | |
7289 | } | |
7290 | ||
cae688ec JJ |
7291 | void |
7292 | remove_solib_event_breakpoints (void) | |
7293 | { | |
35df4500 | 7294 | struct breakpoint *b, *b_tmp; |
cae688ec | 7295 | |
35df4500 | 7296 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7297 | if (b->type == bp_shlib_event |
7298 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7299 | delete_breakpoint (b); |
7300 | } | |
7301 | ||
7302 | struct breakpoint * | |
a6d9a66e | 7303 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
cae688ec JJ |
7304 | { |
7305 | struct breakpoint *b; | |
7306 | ||
06edf0c0 PA |
7307 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7308 | &internal_breakpoint_ops); | |
b60e7edf | 7309 | update_global_location_list_nothrow (1); |
cae688ec JJ |
7310 | return b; |
7311 | } | |
7312 | ||
7313 | /* Disable any breakpoints that are on code in shared libraries. Only | |
7314 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7315 | ||
7316 | void | |
cb851954 | 7317 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7318 | { |
876fa593 | 7319 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7320 | |
876fa593 | 7321 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7322 | { |
2bdf28a0 | 7323 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7324 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7325 | |
4a64f543 MS |
7326 | /* We apply the check to all breakpoints, including disabled for |
7327 | those with loc->duplicate set. This is so that when breakpoint | |
7328 | becomes enabled, or the duplicate is removed, gdb will try to | |
7329 | insert all breakpoints. If we don't set shlib_disabled here, | |
7330 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7331 | if (((b->type == bp_breakpoint) |
508ccb1f | 7332 | || (b->type == bp_jit_event) |
1042e4c0 | 7333 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7334 | || (is_tracepoint (b))) |
6c95b8df | 7335 | && loc->pspace == current_program_space |
0d381245 | 7336 | && !loc->shlib_disabled |
a77053c2 | 7337 | #ifdef PC_SOLIB |
0d381245 | 7338 | && PC_SOLIB (loc->address) |
a77053c2 | 7339 | #else |
6c95b8df | 7340 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 MK |
7341 | #endif |
7342 | ) | |
0d381245 VP |
7343 | { |
7344 | loc->shlib_disabled = 1; | |
7345 | } | |
cae688ec JJ |
7346 | } |
7347 | } | |
7348 | ||
1e4d1764 YQ |
7349 | /* Disable any breakpoints and tracepoints that are in an unloaded shared |
7350 | library. Only apply to enabled breakpoints, disabled ones can just stay | |
4a64f543 | 7351 | disabled. */ |
84acb35a | 7352 | |
75149521 | 7353 | static void |
84acb35a JJ |
7354 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7355 | { | |
876fa593 | 7356 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7357 | int disabled_shlib_breaks = 0; |
7358 | ||
c86cf029 VP |
7359 | /* SunOS a.out shared libraries are always mapped, so do not |
7360 | disable breakpoints; they will only be reported as unloaded | |
7361 | through clear_solib when GDB discards its shared library | |
7362 | list. See clear_solib for more information. */ | |
7363 | if (exec_bfd != NULL | |
7364 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
7365 | return; | |
7366 | ||
876fa593 | 7367 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7368 | { |
2bdf28a0 | 7369 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7370 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7371 | |
1e4d1764 | 7372 | if (solib->pspace == loc->pspace |
e2dd7057 | 7373 | && !loc->shlib_disabled |
1e4d1764 YQ |
7374 | && (((b->type == bp_breakpoint |
7375 | || b->type == bp_jit_event | |
7376 | || b->type == bp_hardware_breakpoint) | |
7377 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7378 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7379 | || is_tracepoint (b)) | |
e2dd7057 | 7380 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7381 | { |
e2dd7057 PP |
7382 | loc->shlib_disabled = 1; |
7383 | /* At this point, we cannot rely on remove_breakpoint | |
7384 | succeeding so we must mark the breakpoint as not inserted | |
7385 | to prevent future errors occurring in remove_breakpoints. */ | |
7386 | loc->inserted = 0; | |
8d3788bd VP |
7387 | |
7388 | /* This may cause duplicate notifications for the same breakpoint. */ | |
7389 | observer_notify_breakpoint_modified (b); | |
7390 | ||
e2dd7057 PP |
7391 | if (!disabled_shlib_breaks) |
7392 | { | |
7393 | target_terminal_ours_for_output (); | |
3e43a32a MS |
7394 | warning (_("Temporarily disabling breakpoints " |
7395 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7396 | solib->so_name); |
84acb35a | 7397 | } |
e2dd7057 | 7398 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7399 | } |
7400 | } | |
84acb35a JJ |
7401 | } |
7402 | ||
ce78b96d JB |
7403 | /* FORK & VFORK catchpoints. */ |
7404 | ||
e29a4733 PA |
7405 | /* An instance of this type is used to represent a fork or vfork |
7406 | catchpoint. It includes a "struct breakpoint" as a kind of base | |
7407 | class; users downcast to "struct breakpoint *" when needed. A | |
7408 | breakpoint is really of this type iff its ops pointer points to | |
7409 | CATCH_FORK_BREAKPOINT_OPS. */ | |
7410 | ||
7411 | struct fork_catchpoint | |
7412 | { | |
7413 | /* The base class. */ | |
7414 | struct breakpoint base; | |
7415 | ||
7416 | /* Process id of a child process whose forking triggered this | |
7417 | catchpoint. This field is only valid immediately after this | |
7418 | catchpoint has triggered. */ | |
7419 | ptid_t forked_inferior_pid; | |
7420 | }; | |
7421 | ||
4a64f543 MS |
7422 | /* Implement the "insert" breakpoint_ops method for fork |
7423 | catchpoints. */ | |
ce78b96d | 7424 | |
77b06cd7 TJB |
7425 | static int |
7426 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7427 | { |
77b06cd7 | 7428 | return target_insert_fork_catchpoint (PIDGET (inferior_ptid)); |
ce78b96d JB |
7429 | } |
7430 | ||
4a64f543 MS |
7431 | /* Implement the "remove" breakpoint_ops method for fork |
7432 | catchpoints. */ | |
ce78b96d JB |
7433 | |
7434 | static int | |
77b06cd7 | 7435 | remove_catch_fork (struct bp_location *bl) |
ce78b96d JB |
7436 | { |
7437 | return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); | |
7438 | } | |
7439 | ||
7440 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7441 | catchpoints. */ | |
7442 | ||
7443 | static int | |
f1310107 | 7444 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
09ac7c10 TT |
7445 | struct address_space *aspace, CORE_ADDR bp_addr, |
7446 | const struct target_waitstatus *ws) | |
ce78b96d | 7447 | { |
e29a4733 PA |
7448 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7449 | ||
f90263c1 TT |
7450 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7451 | return 0; | |
7452 | ||
7453 | c->forked_inferior_pid = ws->value.related_pid; | |
7454 | return 1; | |
ce78b96d JB |
7455 | } |
7456 | ||
4a64f543 MS |
7457 | /* Implement the "print_it" breakpoint_ops method for fork |
7458 | catchpoints. */ | |
ce78b96d JB |
7459 | |
7460 | static enum print_stop_action | |
348d480f | 7461 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7462 | { |
36dfb11c | 7463 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7464 | struct breakpoint *b = bs->breakpoint_at; |
7465 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7466 | |
ce78b96d | 7467 | annotate_catchpoint (b->number); |
36dfb11c TT |
7468 | if (b->disposition == disp_del) |
7469 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
7470 | else | |
7471 | ui_out_text (uiout, "\nCatchpoint "); | |
7472 | if (ui_out_is_mi_like_p (uiout)) | |
7473 | { | |
7474 | ui_out_field_string (uiout, "reason", | |
7475 | async_reason_lookup (EXEC_ASYNC_FORK)); | |
7476 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
7477 | } | |
7478 | ui_out_field_int (uiout, "bkptno", b->number); | |
7479 | ui_out_text (uiout, " (forked process "); | |
7480 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7481 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
7482 | return PRINT_SRC_AND_LOC; |
7483 | } | |
7484 | ||
4a64f543 MS |
7485 | /* Implement the "print_one" breakpoint_ops method for fork |
7486 | catchpoints. */ | |
ce78b96d JB |
7487 | |
7488 | static void | |
a6d9a66e | 7489 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7490 | { |
e29a4733 | 7491 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7492 | struct value_print_options opts; |
79a45e25 | 7493 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7494 | |
7495 | get_user_print_options (&opts); | |
7496 | ||
4a64f543 MS |
7497 | /* Field 4, the address, is omitted (which makes the columns not |
7498 | line up too nicely with the headers, but the effect is relatively | |
7499 | readable). */ | |
79a45b7d | 7500 | if (opts.addressprint) |
ce78b96d JB |
7501 | ui_out_field_skip (uiout, "addr"); |
7502 | annotate_field (5); | |
7503 | ui_out_text (uiout, "fork"); | |
e29a4733 | 7504 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
7505 | { |
7506 | ui_out_text (uiout, ", process "); | |
7507 | ui_out_field_int (uiout, "what", | |
e29a4733 | 7508 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
7509 | ui_out_spaces (uiout, 1); |
7510 | } | |
7511 | } | |
7512 | ||
7513 | /* Implement the "print_mention" breakpoint_ops method for fork | |
7514 | catchpoints. */ | |
7515 | ||
7516 | static void | |
7517 | print_mention_catch_fork (struct breakpoint *b) | |
7518 | { | |
7519 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
7520 | } | |
7521 | ||
6149aea9 PA |
7522 | /* Implement the "print_recreate" breakpoint_ops method for fork |
7523 | catchpoints. */ | |
7524 | ||
7525 | static void | |
7526 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
7527 | { | |
7528 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 7529 | print_recreate_thread (b, fp); |
6149aea9 PA |
7530 | } |
7531 | ||
ce78b96d JB |
7532 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
7533 | ||
2060206e | 7534 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 7535 | |
4a64f543 MS |
7536 | /* Implement the "insert" breakpoint_ops method for vfork |
7537 | catchpoints. */ | |
ce78b96d | 7538 | |
77b06cd7 TJB |
7539 | static int |
7540 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 7541 | { |
77b06cd7 | 7542 | return target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); |
ce78b96d JB |
7543 | } |
7544 | ||
4a64f543 MS |
7545 | /* Implement the "remove" breakpoint_ops method for vfork |
7546 | catchpoints. */ | |
ce78b96d JB |
7547 | |
7548 | static int | |
77b06cd7 | 7549 | remove_catch_vfork (struct bp_location *bl) |
ce78b96d JB |
7550 | { |
7551 | return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); | |
7552 | } | |
7553 | ||
7554 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
7555 | catchpoints. */ | |
7556 | ||
7557 | static int | |
f1310107 | 7558 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
09ac7c10 TT |
7559 | struct address_space *aspace, CORE_ADDR bp_addr, |
7560 | const struct target_waitstatus *ws) | |
ce78b96d | 7561 | { |
e29a4733 PA |
7562 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7563 | ||
f90263c1 TT |
7564 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
7565 | return 0; | |
7566 | ||
7567 | c->forked_inferior_pid = ws->value.related_pid; | |
7568 | return 1; | |
ce78b96d JB |
7569 | } |
7570 | ||
4a64f543 MS |
7571 | /* Implement the "print_it" breakpoint_ops method for vfork |
7572 | catchpoints. */ | |
ce78b96d JB |
7573 | |
7574 | static enum print_stop_action | |
348d480f | 7575 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 7576 | { |
36dfb11c | 7577 | struct ui_out *uiout = current_uiout; |
348d480f | 7578 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
7579 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
7580 | ||
ce78b96d | 7581 | annotate_catchpoint (b->number); |
36dfb11c TT |
7582 | if (b->disposition == disp_del) |
7583 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
7584 | else | |
7585 | ui_out_text (uiout, "\nCatchpoint "); | |
7586 | if (ui_out_is_mi_like_p (uiout)) | |
7587 | { | |
7588 | ui_out_field_string (uiout, "reason", | |
7589 | async_reason_lookup (EXEC_ASYNC_VFORK)); | |
7590 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
7591 | } | |
7592 | ui_out_field_int (uiout, "bkptno", b->number); | |
7593 | ui_out_text (uiout, " (vforked process "); | |
7594 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7595 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
7596 | return PRINT_SRC_AND_LOC; |
7597 | } | |
7598 | ||
4a64f543 MS |
7599 | /* Implement the "print_one" breakpoint_ops method for vfork |
7600 | catchpoints. */ | |
ce78b96d JB |
7601 | |
7602 | static void | |
a6d9a66e | 7603 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7604 | { |
e29a4733 | 7605 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7606 | struct value_print_options opts; |
79a45e25 | 7607 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7608 | |
7609 | get_user_print_options (&opts); | |
4a64f543 MS |
7610 | /* Field 4, the address, is omitted (which makes the columns not |
7611 | line up too nicely with the headers, but the effect is relatively | |
7612 | readable). */ | |
79a45b7d | 7613 | if (opts.addressprint) |
ce78b96d JB |
7614 | ui_out_field_skip (uiout, "addr"); |
7615 | annotate_field (5); | |
7616 | ui_out_text (uiout, "vfork"); | |
e29a4733 | 7617 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
7618 | { |
7619 | ui_out_text (uiout, ", process "); | |
7620 | ui_out_field_int (uiout, "what", | |
e29a4733 | 7621 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
7622 | ui_out_spaces (uiout, 1); |
7623 | } | |
7624 | } | |
7625 | ||
7626 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
7627 | catchpoints. */ | |
7628 | ||
7629 | static void | |
7630 | print_mention_catch_vfork (struct breakpoint *b) | |
7631 | { | |
7632 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
7633 | } | |
7634 | ||
6149aea9 PA |
7635 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
7636 | catchpoints. */ | |
7637 | ||
7638 | static void | |
7639 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
7640 | { | |
7641 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 7642 | print_recreate_thread (b, fp); |
6149aea9 PA |
7643 | } |
7644 | ||
ce78b96d JB |
7645 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
7646 | ||
2060206e | 7647 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 7648 | |
edcc5120 TT |
7649 | /* An instance of this type is used to represent an solib catchpoint. |
7650 | It includes a "struct breakpoint" as a kind of base class; users | |
7651 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
7652 | really of this type iff its ops pointer points to | |
7653 | CATCH_SOLIB_BREAKPOINT_OPS. */ | |
7654 | ||
7655 | struct solib_catchpoint | |
7656 | { | |
7657 | /* The base class. */ | |
7658 | struct breakpoint base; | |
7659 | ||
7660 | /* True for "catch load", false for "catch unload". */ | |
7661 | unsigned char is_load; | |
7662 | ||
7663 | /* Regular expression to match, if any. COMPILED is only valid when | |
7664 | REGEX is non-NULL. */ | |
7665 | char *regex; | |
7666 | regex_t compiled; | |
7667 | }; | |
7668 | ||
7669 | static void | |
7670 | dtor_catch_solib (struct breakpoint *b) | |
7671 | { | |
7672 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7673 | ||
7674 | if (self->regex) | |
7675 | regfree (&self->compiled); | |
7676 | xfree (self->regex); | |
7677 | ||
7678 | base_breakpoint_ops.dtor (b); | |
7679 | } | |
7680 | ||
7681 | static int | |
7682 | insert_catch_solib (struct bp_location *ignore) | |
7683 | { | |
7684 | return 0; | |
7685 | } | |
7686 | ||
7687 | static int | |
7688 | remove_catch_solib (struct bp_location *ignore) | |
7689 | { | |
7690 | return 0; | |
7691 | } | |
7692 | ||
7693 | static int | |
7694 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
7695 | struct address_space *aspace, | |
7696 | CORE_ADDR bp_addr, | |
7697 | const struct target_waitstatus *ws) | |
7698 | { | |
7699 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
7700 | struct breakpoint *other; | |
7701 | ||
7702 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
7703 | return 1; | |
7704 | ||
7705 | ALL_BREAKPOINTS (other) | |
7706 | { | |
7707 | struct bp_location *other_bl; | |
7708 | ||
7709 | if (other == bl->owner) | |
7710 | continue; | |
7711 | ||
7712 | if (other->type != bp_shlib_event) | |
7713 | continue; | |
7714 | ||
7715 | if (self->base.pspace != NULL && other->pspace != self->base.pspace) | |
7716 | continue; | |
7717 | ||
7718 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
7719 | { | |
7720 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
7721 | return 1; | |
7722 | } | |
7723 | } | |
7724 | ||
7725 | return 0; | |
7726 | } | |
7727 | ||
7728 | static void | |
7729 | check_status_catch_solib (struct bpstats *bs) | |
7730 | { | |
7731 | struct solib_catchpoint *self | |
7732 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
7733 | int ix; | |
7734 | ||
7735 | if (self->is_load) | |
7736 | { | |
7737 | struct so_list *iter; | |
7738 | ||
7739 | for (ix = 0; | |
7740 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
7741 | ix, iter); | |
7742 | ++ix) | |
7743 | { | |
7744 | if (!self->regex | |
7745 | || regexec (&self->compiled, iter->so_name, 0, NULL, 0) == 0) | |
7746 | return; | |
7747 | } | |
7748 | } | |
7749 | else | |
7750 | { | |
7751 | char *iter; | |
7752 | ||
7753 | for (ix = 0; | |
7754 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
7755 | ix, iter); | |
7756 | ++ix) | |
7757 | { | |
7758 | if (!self->regex | |
7759 | || regexec (&self->compiled, iter, 0, NULL, 0) == 0) | |
7760 | return; | |
7761 | } | |
7762 | } | |
7763 | ||
7764 | bs->stop = 0; | |
7765 | bs->print_it = print_it_noop; | |
7766 | } | |
7767 | ||
7768 | static enum print_stop_action | |
7769 | print_it_catch_solib (bpstat bs) | |
7770 | { | |
7771 | struct breakpoint *b = bs->breakpoint_at; | |
7772 | struct ui_out *uiout = current_uiout; | |
7773 | ||
7774 | annotate_catchpoint (b->number); | |
7775 | if (b->disposition == disp_del) | |
7776 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
7777 | else | |
7778 | ui_out_text (uiout, "\nCatchpoint "); | |
7779 | ui_out_field_int (uiout, "bkptno", b->number); | |
7780 | ui_out_text (uiout, "\n"); | |
7781 | if (ui_out_is_mi_like_p (uiout)) | |
7782 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
7783 | print_solib_event (1); | |
7784 | return PRINT_SRC_AND_LOC; | |
7785 | } | |
7786 | ||
7787 | static void | |
7788 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
7789 | { | |
7790 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7791 | struct value_print_options opts; | |
7792 | struct ui_out *uiout = current_uiout; | |
7793 | char *msg; | |
7794 | ||
7795 | get_user_print_options (&opts); | |
7796 | /* Field 4, the address, is omitted (which makes the columns not | |
7797 | line up too nicely with the headers, but the effect is relatively | |
7798 | readable). */ | |
7799 | if (opts.addressprint) | |
7800 | { | |
7801 | annotate_field (4); | |
7802 | ui_out_field_skip (uiout, "addr"); | |
7803 | } | |
7804 | ||
7805 | annotate_field (5); | |
7806 | if (self->is_load) | |
7807 | { | |
7808 | if (self->regex) | |
7809 | msg = xstrprintf (_("load of library matching %s"), self->regex); | |
7810 | else | |
7811 | msg = xstrdup (_("load of library")); | |
7812 | } | |
7813 | else | |
7814 | { | |
7815 | if (self->regex) | |
7816 | msg = xstrprintf (_("unload of library matching %s"), self->regex); | |
7817 | else | |
7818 | msg = xstrdup (_("unload of library")); | |
7819 | } | |
7820 | ui_out_field_string (uiout, "what", msg); | |
7821 | xfree (msg); | |
7822 | } | |
7823 | ||
7824 | static void | |
7825 | print_mention_catch_solib (struct breakpoint *b) | |
7826 | { | |
7827 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7828 | ||
7829 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
7830 | self->is_load ? "load" : "unload"); | |
7831 | } | |
7832 | ||
7833 | static void | |
7834 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
7835 | { | |
7836 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7837 | ||
7838 | fprintf_unfiltered (fp, "%s %s", | |
7839 | b->disposition == disp_del ? "tcatch" : "catch", | |
7840 | self->is_load ? "load" : "unload"); | |
7841 | if (self->regex) | |
7842 | fprintf_unfiltered (fp, " %s", self->regex); | |
7843 | fprintf_unfiltered (fp, "\n"); | |
7844 | } | |
7845 | ||
7846 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
7847 | ||
7848 | /* A helper function that does all the work for "catch load" and | |
7849 | "catch unload". */ | |
7850 | ||
7851 | static void | |
7852 | catch_load_or_unload (char *arg, int from_tty, int is_load, | |
7853 | struct cmd_list_element *command) | |
7854 | { | |
7855 | struct solib_catchpoint *c; | |
7856 | struct gdbarch *gdbarch = get_current_arch (); | |
7857 | int tempflag; | |
edcc5120 TT |
7858 | struct cleanup *cleanup; |
7859 | ||
7860 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
7861 | ||
7862 | if (!arg) | |
7863 | arg = ""; | |
7864 | arg = skip_spaces (arg); | |
7865 | ||
7866 | c = XCNEW (struct solib_catchpoint); | |
7867 | cleanup = make_cleanup (xfree, c); | |
7868 | ||
7869 | if (*arg != '\0') | |
7870 | { | |
7871 | int errcode; | |
7872 | ||
7873 | errcode = regcomp (&c->compiled, arg, REG_NOSUB); | |
7874 | if (errcode != 0) | |
7875 | { | |
7876 | char *err = get_regcomp_error (errcode, &c->compiled); | |
7877 | ||
7878 | make_cleanup (xfree, err); | |
7879 | error (_("Invalid regexp (%s): %s"), err, arg); | |
7880 | } | |
7881 | c->regex = xstrdup (arg); | |
7882 | } | |
7883 | ||
7884 | c->is_load = is_load; | |
7885 | init_catchpoint (&c->base, gdbarch, tempflag, NULL, | |
7886 | &catch_solib_breakpoint_ops); | |
7887 | ||
7888 | discard_cleanups (cleanup); | |
7889 | install_breakpoint (0, &c->base, 1); | |
7890 | } | |
7891 | ||
7892 | static void | |
7893 | catch_load_command_1 (char *arg, int from_tty, | |
7894 | struct cmd_list_element *command) | |
7895 | { | |
7896 | catch_load_or_unload (arg, from_tty, 1, command); | |
7897 | } | |
7898 | ||
7899 | static void | |
7900 | catch_unload_command_1 (char *arg, int from_tty, | |
7901 | struct cmd_list_element *command) | |
7902 | { | |
7903 | catch_load_or_unload (arg, from_tty, 0, command); | |
7904 | } | |
7905 | ||
fa3064dd YQ |
7906 | DEF_VEC_I(int); |
7907 | ||
be5c67c1 PA |
7908 | /* An instance of this type is used to represent a syscall catchpoint. |
7909 | It includes a "struct breakpoint" as a kind of base class; users | |
7910 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
7911 | really of this type iff its ops pointer points to | |
7912 | CATCH_SYSCALL_BREAKPOINT_OPS. */ | |
7913 | ||
7914 | struct syscall_catchpoint | |
7915 | { | |
7916 | /* The base class. */ | |
7917 | struct breakpoint base; | |
7918 | ||
7919 | /* Syscall numbers used for the 'catch syscall' feature. If no | |
7920 | syscall has been specified for filtering, its value is NULL. | |
7921 | Otherwise, it holds a list of all syscalls to be caught. The | |
7922 | list elements are allocated with xmalloc. */ | |
7923 | VEC(int) *syscalls_to_be_caught; | |
7924 | }; | |
7925 | ||
7926 | /* Implement the "dtor" breakpoint_ops method for syscall | |
7927 | catchpoints. */ | |
7928 | ||
7929 | static void | |
7930 | dtor_catch_syscall (struct breakpoint *b) | |
7931 | { | |
7932 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; | |
7933 | ||
7934 | VEC_free (int, c->syscalls_to_be_caught); | |
348d480f | 7935 | |
2060206e | 7936 | base_breakpoint_ops.dtor (b); |
be5c67c1 PA |
7937 | } |
7938 | ||
fa3064dd YQ |
7939 | static const struct inferior_data *catch_syscall_inferior_data = NULL; |
7940 | ||
7941 | struct catch_syscall_inferior_data | |
7942 | { | |
7943 | /* We keep a count of the number of times the user has requested a | |
7944 | particular syscall to be tracked, and pass this information to the | |
7945 | target. This lets capable targets implement filtering directly. */ | |
7946 | ||
7947 | /* Number of times that "any" syscall is requested. */ | |
7948 | int any_syscall_count; | |
7949 | ||
7950 | /* Count of each system call. */ | |
7951 | VEC(int) *syscalls_counts; | |
7952 | ||
7953 | /* This counts all syscall catch requests, so we can readily determine | |
7954 | if any catching is necessary. */ | |
7955 | int total_syscalls_count; | |
7956 | }; | |
7957 | ||
7958 | static struct catch_syscall_inferior_data* | |
7959 | get_catch_syscall_inferior_data (struct inferior *inf) | |
7960 | { | |
7961 | struct catch_syscall_inferior_data *inf_data; | |
7962 | ||
7963 | inf_data = inferior_data (inf, catch_syscall_inferior_data); | |
7964 | if (inf_data == NULL) | |
7965 | { | |
7966 | inf_data = XZALLOC (struct catch_syscall_inferior_data); | |
7967 | set_inferior_data (inf, catch_syscall_inferior_data, inf_data); | |
7968 | } | |
7969 | ||
7970 | return inf_data; | |
7971 | } | |
7972 | ||
7973 | static void | |
7974 | catch_syscall_inferior_data_cleanup (struct inferior *inf, void *arg) | |
7975 | { | |
7976 | xfree (arg); | |
7977 | } | |
7978 | ||
7979 | ||
a96d9b2e SDJ |
7980 | /* Implement the "insert" breakpoint_ops method for syscall |
7981 | catchpoints. */ | |
7982 | ||
77b06cd7 TJB |
7983 | static int |
7984 | insert_catch_syscall (struct bp_location *bl) | |
a96d9b2e | 7985 | { |
be5c67c1 | 7986 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner; |
a96d9b2e | 7987 | struct inferior *inf = current_inferior (); |
fa3064dd YQ |
7988 | struct catch_syscall_inferior_data *inf_data |
7989 | = get_catch_syscall_inferior_data (inf); | |
a96d9b2e | 7990 | |
fa3064dd | 7991 | ++inf_data->total_syscalls_count; |
be5c67c1 | 7992 | if (!c->syscalls_to_be_caught) |
fa3064dd | 7993 | ++inf_data->any_syscall_count; |
a96d9b2e SDJ |
7994 | else |
7995 | { | |
7996 | int i, iter; | |
cc59ec59 | 7997 | |
a96d9b2e | 7998 | for (i = 0; |
be5c67c1 | 7999 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8000 | i++) |
8001 | { | |
8002 | int elem; | |
cc59ec59 | 8003 | |
fa3064dd | 8004 | if (iter >= VEC_length (int, inf_data->syscalls_counts)) |
a96d9b2e | 8005 | { |
fa3064dd | 8006 | int old_size = VEC_length (int, inf_data->syscalls_counts); |
3e43a32a MS |
8007 | uintptr_t vec_addr_offset |
8008 | = old_size * ((uintptr_t) sizeof (int)); | |
a96d9b2e | 8009 | uintptr_t vec_addr; |
fa3064dd YQ |
8010 | VEC_safe_grow (int, inf_data->syscalls_counts, iter + 1); |
8011 | vec_addr = ((uintptr_t) VEC_address (int, | |
8012 | inf_data->syscalls_counts) | |
8013 | + vec_addr_offset); | |
a96d9b2e SDJ |
8014 | memset ((void *) vec_addr, 0, |
8015 | (iter + 1 - old_size) * sizeof (int)); | |
8016 | } | |
fa3064dd YQ |
8017 | elem = VEC_index (int, inf_data->syscalls_counts, iter); |
8018 | VEC_replace (int, inf_data->syscalls_counts, iter, ++elem); | |
a96d9b2e SDJ |
8019 | } |
8020 | } | |
8021 | ||
77b06cd7 | 8022 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), |
fa3064dd YQ |
8023 | inf_data->total_syscalls_count != 0, |
8024 | inf_data->any_syscall_count, | |
8025 | VEC_length (int, | |
8026 | inf_data->syscalls_counts), | |
8027 | VEC_address (int, | |
8028 | inf_data->syscalls_counts)); | |
a96d9b2e SDJ |
8029 | } |
8030 | ||
8031 | /* Implement the "remove" breakpoint_ops method for syscall | |
8032 | catchpoints. */ | |
8033 | ||
8034 | static int | |
77b06cd7 | 8035 | remove_catch_syscall (struct bp_location *bl) |
a96d9b2e | 8036 | { |
be5c67c1 | 8037 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner; |
a96d9b2e | 8038 | struct inferior *inf = current_inferior (); |
fa3064dd YQ |
8039 | struct catch_syscall_inferior_data *inf_data |
8040 | = get_catch_syscall_inferior_data (inf); | |
a96d9b2e | 8041 | |
fa3064dd | 8042 | --inf_data->total_syscalls_count; |
be5c67c1 | 8043 | if (!c->syscalls_to_be_caught) |
fa3064dd | 8044 | --inf_data->any_syscall_count; |
a96d9b2e SDJ |
8045 | else |
8046 | { | |
8047 | int i, iter; | |
cc59ec59 | 8048 | |
a96d9b2e | 8049 | for (i = 0; |
be5c67c1 | 8050 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8051 | i++) |
8052 | { | |
8053 | int elem; | |
fa3064dd | 8054 | if (iter >= VEC_length (int, inf_data->syscalls_counts)) |
a96d9b2e SDJ |
8055 | /* Shouldn't happen. */ |
8056 | continue; | |
fa3064dd YQ |
8057 | elem = VEC_index (int, inf_data->syscalls_counts, iter); |
8058 | VEC_replace (int, inf_data->syscalls_counts, iter, --elem); | |
a96d9b2e SDJ |
8059 | } |
8060 | } | |
8061 | ||
8062 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
fa3064dd YQ |
8063 | inf_data->total_syscalls_count != 0, |
8064 | inf_data->any_syscall_count, | |
8065 | VEC_length (int, | |
8066 | inf_data->syscalls_counts), | |
3e43a32a | 8067 | VEC_address (int, |
fa3064dd | 8068 | inf_data->syscalls_counts)); |
a96d9b2e SDJ |
8069 | } |
8070 | ||
8071 | /* Implement the "breakpoint_hit" breakpoint_ops method for syscall | |
8072 | catchpoints. */ | |
8073 | ||
8074 | static int | |
f1310107 | 8075 | breakpoint_hit_catch_syscall (const struct bp_location *bl, |
09ac7c10 TT |
8076 | struct address_space *aspace, CORE_ADDR bp_addr, |
8077 | const struct target_waitstatus *ws) | |
a96d9b2e | 8078 | { |
4a64f543 MS |
8079 | /* We must check if we are catching specific syscalls in this |
8080 | breakpoint. If we are, then we must guarantee that the called | |
8081 | syscall is the same syscall we are catching. */ | |
a96d9b2e | 8082 | int syscall_number = 0; |
be5c67c1 PA |
8083 | const struct syscall_catchpoint *c |
8084 | = (const struct syscall_catchpoint *) bl->owner; | |
a96d9b2e | 8085 | |
f90263c1 TT |
8086 | if (ws->kind != TARGET_WAITKIND_SYSCALL_ENTRY |
8087 | && ws->kind != TARGET_WAITKIND_SYSCALL_RETURN) | |
a96d9b2e SDJ |
8088 | return 0; |
8089 | ||
f90263c1 TT |
8090 | syscall_number = ws->value.syscall_number; |
8091 | ||
a96d9b2e | 8092 | /* Now, checking if the syscall is the same. */ |
be5c67c1 | 8093 | if (c->syscalls_to_be_caught) |
a96d9b2e SDJ |
8094 | { |
8095 | int i, iter; | |
cc59ec59 | 8096 | |
a96d9b2e | 8097 | for (i = 0; |
be5c67c1 | 8098 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8099 | i++) |
8100 | if (syscall_number == iter) | |
8101 | break; | |
8102 | /* Not the same. */ | |
8103 | if (!iter) | |
8104 | return 0; | |
8105 | } | |
8106 | ||
8107 | return 1; | |
8108 | } | |
8109 | ||
8110 | /* Implement the "print_it" breakpoint_ops method for syscall | |
8111 | catchpoints. */ | |
8112 | ||
8113 | static enum print_stop_action | |
348d480f | 8114 | print_it_catch_syscall (bpstat bs) |
a96d9b2e | 8115 | { |
36dfb11c | 8116 | struct ui_out *uiout = current_uiout; |
348d480f | 8117 | struct breakpoint *b = bs->breakpoint_at; |
a96d9b2e SDJ |
8118 | /* These are needed because we want to know in which state a |
8119 | syscall is. It can be in the TARGET_WAITKIND_SYSCALL_ENTRY | |
8120 | or TARGET_WAITKIND_SYSCALL_RETURN, and depending on it we | |
8121 | must print "called syscall" or "returned from syscall". */ | |
8122 | ptid_t ptid; | |
8123 | struct target_waitstatus last; | |
8124 | struct syscall s; | |
a96d9b2e SDJ |
8125 | |
8126 | get_last_target_status (&ptid, &last); | |
8127 | ||
8128 | get_syscall_by_number (last.value.syscall_number, &s); | |
8129 | ||
8130 | annotate_catchpoint (b->number); | |
8131 | ||
36dfb11c TT |
8132 | if (b->disposition == disp_del) |
8133 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
a96d9b2e | 8134 | else |
36dfb11c TT |
8135 | ui_out_text (uiout, "\nCatchpoint "); |
8136 | if (ui_out_is_mi_like_p (uiout)) | |
8137 | { | |
8138 | ui_out_field_string (uiout, "reason", | |
8139 | async_reason_lookup (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY | |
8140 | ? EXEC_ASYNC_SYSCALL_ENTRY | |
8141 | : EXEC_ASYNC_SYSCALL_RETURN)); | |
8142 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8143 | } | |
8144 | ui_out_field_int (uiout, "bkptno", b->number); | |
a96d9b2e SDJ |
8145 | |
8146 | if (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY) | |
36dfb11c TT |
8147 | ui_out_text (uiout, " (call to syscall "); |
8148 | else | |
8149 | ui_out_text (uiout, " (returned from syscall "); | |
a96d9b2e | 8150 | |
36dfb11c TT |
8151 | if (s.name == NULL || ui_out_is_mi_like_p (uiout)) |
8152 | ui_out_field_int (uiout, "syscall-number", last.value.syscall_number); | |
8153 | if (s.name != NULL) | |
8154 | ui_out_field_string (uiout, "syscall-name", s.name); | |
8155 | ||
8156 | ui_out_text (uiout, "), "); | |
a96d9b2e SDJ |
8157 | |
8158 | return PRINT_SRC_AND_LOC; | |
8159 | } | |
8160 | ||
8161 | /* Implement the "print_one" breakpoint_ops method for syscall | |
8162 | catchpoints. */ | |
8163 | ||
8164 | static void | |
8165 | print_one_catch_syscall (struct breakpoint *b, | |
f1310107 | 8166 | struct bp_location **last_loc) |
a96d9b2e | 8167 | { |
be5c67c1 | 8168 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
a96d9b2e | 8169 | struct value_print_options opts; |
79a45e25 | 8170 | struct ui_out *uiout = current_uiout; |
a96d9b2e SDJ |
8171 | |
8172 | get_user_print_options (&opts); | |
4a64f543 MS |
8173 | /* Field 4, the address, is omitted (which makes the columns not |
8174 | line up too nicely with the headers, but the effect is relatively | |
8175 | readable). */ | |
a96d9b2e SDJ |
8176 | if (opts.addressprint) |
8177 | ui_out_field_skip (uiout, "addr"); | |
8178 | annotate_field (5); | |
8179 | ||
be5c67c1 PA |
8180 | if (c->syscalls_to_be_caught |
8181 | && VEC_length (int, c->syscalls_to_be_caught) > 1) | |
a96d9b2e SDJ |
8182 | ui_out_text (uiout, "syscalls \""); |
8183 | else | |
8184 | ui_out_text (uiout, "syscall \""); | |
8185 | ||
be5c67c1 | 8186 | if (c->syscalls_to_be_caught) |
a96d9b2e SDJ |
8187 | { |
8188 | int i, iter; | |
8189 | char *text = xstrprintf ("%s", ""); | |
cc59ec59 | 8190 | |
a96d9b2e | 8191 | for (i = 0; |
be5c67c1 | 8192 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8193 | i++) |
8194 | { | |
8195 | char *x = text; | |
8196 | struct syscall s; | |
8197 | get_syscall_by_number (iter, &s); | |
8198 | ||
8199 | if (s.name != NULL) | |
8200 | text = xstrprintf ("%s%s, ", text, s.name); | |
8201 | else | |
8202 | text = xstrprintf ("%s%d, ", text, iter); | |
8203 | ||
8204 | /* We have to xfree the last 'text' (now stored at 'x') | |
e5dd4106 | 8205 | because xstrprintf dynamically allocates new space for it |
a96d9b2e SDJ |
8206 | on every call. */ |
8207 | xfree (x); | |
8208 | } | |
8209 | /* Remove the last comma. */ | |
8210 | text[strlen (text) - 2] = '\0'; | |
8211 | ui_out_field_string (uiout, "what", text); | |
8212 | } | |
8213 | else | |
8214 | ui_out_field_string (uiout, "what", "<any syscall>"); | |
8215 | ui_out_text (uiout, "\" "); | |
8216 | } | |
8217 | ||
8218 | /* Implement the "print_mention" breakpoint_ops method for syscall | |
8219 | catchpoints. */ | |
8220 | ||
8221 | static void | |
8222 | print_mention_catch_syscall (struct breakpoint *b) | |
8223 | { | |
be5c67c1 PA |
8224 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
8225 | ||
8226 | if (c->syscalls_to_be_caught) | |
a96d9b2e SDJ |
8227 | { |
8228 | int i, iter; | |
8229 | ||
be5c67c1 | 8230 | if (VEC_length (int, c->syscalls_to_be_caught) > 1) |
a96d9b2e SDJ |
8231 | printf_filtered (_("Catchpoint %d (syscalls"), b->number); |
8232 | else | |
8233 | printf_filtered (_("Catchpoint %d (syscall"), b->number); | |
8234 | ||
8235 | for (i = 0; | |
be5c67c1 | 8236 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8237 | i++) |
8238 | { | |
8239 | struct syscall s; | |
8240 | get_syscall_by_number (iter, &s); | |
8241 | ||
8242 | if (s.name) | |
8243 | printf_filtered (" '%s' [%d]", s.name, s.number); | |
8244 | else | |
8245 | printf_filtered (" %d", s.number); | |
8246 | } | |
8247 | printf_filtered (")"); | |
8248 | } | |
8249 | else | |
8250 | printf_filtered (_("Catchpoint %d (any syscall)"), | |
8251 | b->number); | |
8252 | } | |
8253 | ||
6149aea9 PA |
8254 | /* Implement the "print_recreate" breakpoint_ops method for syscall |
8255 | catchpoints. */ | |
8256 | ||
8257 | static void | |
8258 | print_recreate_catch_syscall (struct breakpoint *b, struct ui_file *fp) | |
8259 | { | |
be5c67c1 PA |
8260 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
8261 | ||
6149aea9 PA |
8262 | fprintf_unfiltered (fp, "catch syscall"); |
8263 | ||
be5c67c1 | 8264 | if (c->syscalls_to_be_caught) |
6149aea9 PA |
8265 | { |
8266 | int i, iter; | |
8267 | ||
8268 | for (i = 0; | |
be5c67c1 | 8269 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
6149aea9 PA |
8270 | i++) |
8271 | { | |
8272 | struct syscall s; | |
8273 | ||
8274 | get_syscall_by_number (iter, &s); | |
8275 | if (s.name) | |
8276 | fprintf_unfiltered (fp, " %s", s.name); | |
8277 | else | |
8278 | fprintf_unfiltered (fp, " %d", s.number); | |
8279 | } | |
8280 | } | |
d9b3f62e | 8281 | print_recreate_thread (b, fp); |
6149aea9 PA |
8282 | } |
8283 | ||
a96d9b2e SDJ |
8284 | /* The breakpoint_ops structure to be used in syscall catchpoints. */ |
8285 | ||
2060206e | 8286 | static struct breakpoint_ops catch_syscall_breakpoint_ops; |
a96d9b2e SDJ |
8287 | |
8288 | /* Returns non-zero if 'b' is a syscall catchpoint. */ | |
8289 | ||
8290 | static int | |
8291 | syscall_catchpoint_p (struct breakpoint *b) | |
8292 | { | |
8293 | return (b->ops == &catch_syscall_breakpoint_ops); | |
8294 | } | |
8295 | ||
346774a9 PA |
8296 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
8297 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
8298 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
8299 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 8300 | |
346774a9 PA |
8301 | static void |
8302 | init_catchpoint (struct breakpoint *b, | |
8303 | struct gdbarch *gdbarch, int tempflag, | |
8304 | char *cond_string, | |
c0a91b2b | 8305 | const struct breakpoint_ops *ops) |
c906108c | 8306 | { |
c5aa993b | 8307 | struct symtab_and_line sal; |
346774a9 | 8308 | |
fe39c653 | 8309 | init_sal (&sal); |
6c95b8df | 8310 | sal.pspace = current_program_space; |
c5aa993b | 8311 | |
28010a5d | 8312 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8313 | |
1b36a34b | 8314 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 8315 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
8316 | } |
8317 | ||
28010a5d | 8318 | void |
3ea46bff | 8319 | install_breakpoint (int internal, struct breakpoint *b, int update_gll) |
c56053d2 PA |
8320 | { |
8321 | add_to_breakpoint_chain (b); | |
3a5c3e22 PA |
8322 | set_breakpoint_number (internal, b); |
8323 | if (!internal) | |
8324 | mention (b); | |
c56053d2 | 8325 | observer_notify_breakpoint_created (b); |
3ea46bff YQ |
8326 | |
8327 | if (update_gll) | |
8328 | update_global_location_list (1); | |
c56053d2 PA |
8329 | } |
8330 | ||
9b70b993 | 8331 | static void |
a6d9a66e UW |
8332 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
8333 | int tempflag, char *cond_string, | |
c0a91b2b | 8334 | const struct breakpoint_ops *ops) |
c906108c | 8335 | { |
e29a4733 | 8336 | struct fork_catchpoint *c = XNEW (struct fork_catchpoint); |
ce78b96d | 8337 | |
e29a4733 PA |
8338 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, ops); |
8339 | ||
8340 | c->forked_inferior_pid = null_ptid; | |
8341 | ||
3ea46bff | 8342 | install_breakpoint (0, &c->base, 1); |
c906108c SS |
8343 | } |
8344 | ||
fe798b75 JB |
8345 | /* Exec catchpoints. */ |
8346 | ||
b4d90040 PA |
8347 | /* An instance of this type is used to represent an exec catchpoint. |
8348 | It includes a "struct breakpoint" as a kind of base class; users | |
8349 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
8350 | really of this type iff its ops pointer points to | |
8351 | CATCH_EXEC_BREAKPOINT_OPS. */ | |
8352 | ||
8353 | struct exec_catchpoint | |
8354 | { | |
8355 | /* The base class. */ | |
8356 | struct breakpoint base; | |
8357 | ||
8358 | /* Filename of a program whose exec triggered this catchpoint. | |
8359 | This field is only valid immediately after this catchpoint has | |
8360 | triggered. */ | |
8361 | char *exec_pathname; | |
8362 | }; | |
8363 | ||
8364 | /* Implement the "dtor" breakpoint_ops method for exec | |
8365 | catchpoints. */ | |
8366 | ||
8367 | static void | |
8368 | dtor_catch_exec (struct breakpoint *b) | |
8369 | { | |
8370 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; | |
8371 | ||
8372 | xfree (c->exec_pathname); | |
348d480f | 8373 | |
2060206e | 8374 | base_breakpoint_ops.dtor (b); |
b4d90040 PA |
8375 | } |
8376 | ||
77b06cd7 TJB |
8377 | static int |
8378 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8379 | { |
77b06cd7 | 8380 | return target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
fe798b75 | 8381 | } |
c906108c | 8382 | |
fe798b75 | 8383 | static int |
77b06cd7 | 8384 | remove_catch_exec (struct bp_location *bl) |
fe798b75 JB |
8385 | { |
8386 | return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); | |
8387 | } | |
c906108c | 8388 | |
fe798b75 | 8389 | static int |
f1310107 | 8390 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
09ac7c10 TT |
8391 | struct address_space *aspace, CORE_ADDR bp_addr, |
8392 | const struct target_waitstatus *ws) | |
fe798b75 | 8393 | { |
b4d90040 PA |
8394 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8395 | ||
f90263c1 TT |
8396 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8397 | return 0; | |
8398 | ||
8399 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8400 | return 1; | |
fe798b75 | 8401 | } |
c906108c | 8402 | |
fe798b75 | 8403 | static enum print_stop_action |
348d480f | 8404 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8405 | { |
36dfb11c | 8406 | struct ui_out *uiout = current_uiout; |
348d480f | 8407 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8408 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8409 | ||
fe798b75 | 8410 | annotate_catchpoint (b->number); |
36dfb11c TT |
8411 | if (b->disposition == disp_del) |
8412 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
8413 | else | |
8414 | ui_out_text (uiout, "\nCatchpoint "); | |
8415 | if (ui_out_is_mi_like_p (uiout)) | |
8416 | { | |
8417 | ui_out_field_string (uiout, "reason", | |
8418 | async_reason_lookup (EXEC_ASYNC_EXEC)); | |
8419 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8420 | } | |
8421 | ui_out_field_int (uiout, "bkptno", b->number); | |
8422 | ui_out_text (uiout, " (exec'd "); | |
8423 | ui_out_field_string (uiout, "new-exec", c->exec_pathname); | |
8424 | ui_out_text (uiout, "), "); | |
8425 | ||
fe798b75 | 8426 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8427 | } |
8428 | ||
fe798b75 | 8429 | static void |
a6d9a66e | 8430 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8431 | { |
b4d90040 | 8432 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8433 | struct value_print_options opts; |
79a45e25 | 8434 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8435 | |
8436 | get_user_print_options (&opts); | |
8437 | ||
8438 | /* Field 4, the address, is omitted (which makes the columns | |
8439 | not line up too nicely with the headers, but the effect | |
8440 | is relatively readable). */ | |
8441 | if (opts.addressprint) | |
8442 | ui_out_field_skip (uiout, "addr"); | |
8443 | annotate_field (5); | |
8444 | ui_out_text (uiout, "exec"); | |
b4d90040 | 8445 | if (c->exec_pathname != NULL) |
fe798b75 JB |
8446 | { |
8447 | ui_out_text (uiout, ", program \""); | |
b4d90040 | 8448 | ui_out_field_string (uiout, "what", c->exec_pathname); |
fe798b75 JB |
8449 | ui_out_text (uiout, "\" "); |
8450 | } | |
8451 | } | |
8452 | ||
8453 | static void | |
8454 | print_mention_catch_exec (struct breakpoint *b) | |
8455 | { | |
8456 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8457 | } | |
8458 | ||
6149aea9 PA |
8459 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8460 | catchpoints. */ | |
8461 | ||
8462 | static void | |
8463 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8464 | { | |
8465 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8466 | print_recreate_thread (b, fp); |
6149aea9 PA |
8467 | } |
8468 | ||
2060206e | 8469 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8470 | |
a96d9b2e SDJ |
8471 | static void |
8472 | create_syscall_event_catchpoint (int tempflag, VEC(int) *filter, | |
c0a91b2b | 8473 | const struct breakpoint_ops *ops) |
a96d9b2e | 8474 | { |
be5c67c1 | 8475 | struct syscall_catchpoint *c; |
a96d9b2e | 8476 | struct gdbarch *gdbarch = get_current_arch (); |
a96d9b2e | 8477 | |
be5c67c1 PA |
8478 | c = XNEW (struct syscall_catchpoint); |
8479 | init_catchpoint (&c->base, gdbarch, tempflag, NULL, ops); | |
8480 | c->syscalls_to_be_caught = filter; | |
a96d9b2e | 8481 | |
3ea46bff | 8482 | install_breakpoint (0, &c->base, 1); |
a96d9b2e SDJ |
8483 | } |
8484 | ||
c906108c | 8485 | static int |
fba45db2 | 8486 | hw_breakpoint_used_count (void) |
c906108c | 8487 | { |
c906108c | 8488 | int i = 0; |
f1310107 TJB |
8489 | struct breakpoint *b; |
8490 | struct bp_location *bl; | |
c906108c SS |
8491 | |
8492 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8493 | { |
d6b74ac4 | 8494 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8495 | for (bl = b->loc; bl; bl = bl->next) |
8496 | { | |
8497 | /* Special types of hardware breakpoints may use more than | |
8498 | one register. */ | |
348d480f | 8499 | i += b->ops->resources_needed (bl); |
f1310107 | 8500 | } |
c5aa993b | 8501 | } |
c906108c SS |
8502 | |
8503 | return i; | |
8504 | } | |
8505 | ||
a1398e0c PA |
8506 | /* Returns the resources B would use if it were a hardware |
8507 | watchpoint. */ | |
8508 | ||
c906108c | 8509 | static int |
a1398e0c | 8510 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8511 | { |
c906108c | 8512 | int i = 0; |
e09342b5 | 8513 | struct bp_location *bl; |
c906108c | 8514 | |
a1398e0c PA |
8515 | if (!breakpoint_enabled (b)) |
8516 | return 0; | |
8517 | ||
8518 | for (bl = b->loc; bl; bl = bl->next) | |
8519 | { | |
8520 | /* Special types of hardware watchpoints may use more than | |
8521 | one register. */ | |
8522 | i += b->ops->resources_needed (bl); | |
8523 | } | |
8524 | ||
8525 | return i; | |
8526 | } | |
8527 | ||
8528 | /* Returns the sum the used resources of all hardware watchpoints of | |
8529 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8530 | the sum of the used resources of all hardware watchpoints of other | |
8531 | types _not_ TYPE. */ | |
8532 | ||
8533 | static int | |
8534 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8535 | enum bptype type, int *other_type_used) | |
8536 | { | |
8537 | int i = 0; | |
8538 | struct breakpoint *b; | |
8539 | ||
c906108c SS |
8540 | *other_type_used = 0; |
8541 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8542 | { |
a1398e0c PA |
8543 | if (b == except) |
8544 | continue; | |
e09342b5 TJB |
8545 | if (!breakpoint_enabled (b)) |
8546 | continue; | |
8547 | ||
a1398e0c PA |
8548 | if (b->type == type) |
8549 | i += hw_watchpoint_use_count (b); | |
8550 | else if (is_hardware_watchpoint (b)) | |
8551 | *other_type_used = 1; | |
e09342b5 TJB |
8552 | } |
8553 | ||
c906108c SS |
8554 | return i; |
8555 | } | |
8556 | ||
c906108c | 8557 | void |
fba45db2 | 8558 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8559 | { |
c5aa993b | 8560 | struct breakpoint *b; |
c906108c SS |
8561 | |
8562 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8563 | { |
cc60f2e3 | 8564 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8565 | { |
b5de0fa7 | 8566 | b->enable_state = bp_call_disabled; |
b60e7edf | 8567 | update_global_location_list (0); |
c5aa993b JM |
8568 | } |
8569 | } | |
c906108c SS |
8570 | } |
8571 | ||
8572 | void | |
fba45db2 | 8573 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8574 | { |
c5aa993b | 8575 | struct breakpoint *b; |
c906108c SS |
8576 | |
8577 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8578 | { |
cc60f2e3 | 8579 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8580 | { |
b5de0fa7 | 8581 | b->enable_state = bp_enabled; |
b60e7edf | 8582 | update_global_location_list (1); |
c5aa993b JM |
8583 | } |
8584 | } | |
c906108c SS |
8585 | } |
8586 | ||
8bea4e01 UW |
8587 | void |
8588 | disable_breakpoints_before_startup (void) | |
8589 | { | |
6c95b8df | 8590 | current_program_space->executing_startup = 1; |
f8eba3c6 | 8591 | update_global_location_list (0); |
8bea4e01 UW |
8592 | } |
8593 | ||
8594 | void | |
8595 | enable_breakpoints_after_startup (void) | |
8596 | { | |
6c95b8df | 8597 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8598 | breakpoint_re_set (); |
8bea4e01 UW |
8599 | } |
8600 | ||
c906108c SS |
8601 | |
8602 | /* Set a breakpoint that will evaporate an end of command | |
8603 | at address specified by SAL. | |
8604 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
8605 | ||
8606 | struct breakpoint * | |
a6d9a66e UW |
8607 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8608 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8609 | { |
52f0bd74 | 8610 | struct breakpoint *b; |
edb3359d DJ |
8611 | |
8612 | /* If FRAME_ID is valid, it should be a real frame, not an inlined | |
8613 | one. */ | |
8614 | gdb_assert (!frame_id_inlined_p (frame_id)); | |
8615 | ||
06edf0c0 | 8616 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8617 | b->enable_state = bp_enabled; |
8618 | b->disposition = disp_donttouch; | |
818dd999 | 8619 | b->frame_id = frame_id; |
c906108c | 8620 | |
4a64f543 MS |
8621 | /* If we're debugging a multi-threaded program, then we want |
8622 | momentary breakpoints to be active in only a single thread of | |
8623 | control. */ | |
39f77062 KB |
8624 | if (in_thread_list (inferior_ptid)) |
8625 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 8626 | |
b60e7edf | 8627 | update_global_location_list_nothrow (1); |
74960c60 | 8628 | |
c906108c SS |
8629 | return b; |
8630 | } | |
611c83ae | 8631 | |
06edf0c0 PA |
8632 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
8633 | The new breakpoint will have type TYPE, and use OPS as it | |
8634 | breakpoint_ops. */ | |
e58b0e63 | 8635 | |
06edf0c0 PA |
8636 | static struct breakpoint * |
8637 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8638 | enum bptype type, | |
c0a91b2b | 8639 | const struct breakpoint_ops *ops) |
e58b0e63 PA |
8640 | { |
8641 | struct breakpoint *copy; | |
8642 | ||
06edf0c0 | 8643 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8644 | copy->loc = allocate_bp_location (copy); |
0e30163f | 8645 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 8646 | |
a6d9a66e | 8647 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8648 | copy->loc->requested_address = orig->loc->requested_address; |
8649 | copy->loc->address = orig->loc->address; | |
8650 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8651 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8652 | copy->loc->probe = orig->loc->probe; |
e58b0e63 | 8653 | |
f8eba3c6 TT |
8654 | if (orig->loc->source_file != NULL) |
8655 | copy->loc->source_file = xstrdup (orig->loc->source_file); | |
e58b0e63 | 8656 | |
f8eba3c6 | 8657 | copy->loc->line_number = orig->loc->line_number; |
e58b0e63 PA |
8658 | copy->frame_id = orig->frame_id; |
8659 | copy->thread = orig->thread; | |
6c95b8df | 8660 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8661 | |
8662 | copy->enable_state = bp_enabled; | |
8663 | copy->disposition = disp_donttouch; | |
8664 | copy->number = internal_breakpoint_number--; | |
8665 | ||
8666 | update_global_location_list_nothrow (0); | |
8667 | return copy; | |
8668 | } | |
8669 | ||
06edf0c0 PA |
8670 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8671 | ORIG is NULL. */ | |
8672 | ||
8673 | struct breakpoint * | |
8674 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8675 | { | |
8676 | /* If there's nothing to clone, then return nothing. */ | |
8677 | if (orig == NULL) | |
8678 | return NULL; | |
8679 | ||
8680 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops); | |
8681 | } | |
8682 | ||
611c83ae | 8683 | struct breakpoint * |
a6d9a66e UW |
8684 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8685 | enum bptype type) | |
611c83ae PA |
8686 | { |
8687 | struct symtab_and_line sal; | |
8688 | ||
8689 | sal = find_pc_line (pc, 0); | |
8690 | sal.pc = pc; | |
8691 | sal.section = find_pc_overlay (pc); | |
8692 | sal.explicit_pc = 1; | |
8693 | ||
a6d9a66e | 8694 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8695 | } |
c906108c | 8696 | \f |
c5aa993b | 8697 | |
c906108c SS |
8698 | /* Tell the user we have just set a breakpoint B. */ |
8699 | ||
8700 | static void | |
fba45db2 | 8701 | mention (struct breakpoint *b) |
c906108c | 8702 | { |
348d480f | 8703 | b->ops->print_mention (b); |
79a45e25 | 8704 | if (ui_out_is_mi_like_p (current_uiout)) |
fb40c209 | 8705 | return; |
c906108c SS |
8706 | printf_filtered ("\n"); |
8707 | } | |
c906108c | 8708 | \f |
c5aa993b | 8709 | |
0d381245 | 8710 | static struct bp_location * |
39d61571 | 8711 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8712 | const struct symtab_and_line *sal) |
8713 | { | |
8714 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8715 | CORE_ADDR adjusted_address; |
8716 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8717 | ||
8718 | if (loc_gdbarch == NULL) | |
8719 | loc_gdbarch = b->gdbarch; | |
8720 | ||
8721 | /* Adjust the breakpoint's address prior to allocating a location. | |
8722 | Once we call allocate_bp_location(), that mostly uninitialized | |
8723 | location will be placed on the location chain. Adjustment of the | |
8724 | breakpoint may cause target_read_memory() to be called and we do | |
8725 | not want its scan of the location chain to find a breakpoint and | |
8726 | location that's only been partially initialized. */ | |
8727 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8728 | sal->pc, b->type); | |
0d381245 | 8729 | |
39d61571 | 8730 | loc = allocate_bp_location (b); |
0d381245 VP |
8731 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
8732 | ; | |
8733 | *tmp = loc; | |
3742cc8b | 8734 | |
0d381245 | 8735 | loc->requested_address = sal->pc; |
3742cc8b | 8736 | loc->address = adjusted_address; |
6c95b8df | 8737 | loc->pspace = sal->pspace; |
55aa24fb | 8738 | loc->probe = sal->probe; |
6c95b8df | 8739 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8740 | loc->section = sal->section; |
3742cc8b | 8741 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 TT |
8742 | |
8743 | if (sal->symtab != NULL) | |
8744 | loc->source_file = xstrdup (sal->symtab->filename); | |
8745 | loc->line_number = sal->line; | |
8746 | ||
0e30163f JK |
8747 | set_breakpoint_location_function (loc, |
8748 | sal->explicit_pc || sal->explicit_line); | |
0d381245 VP |
8749 | return loc; |
8750 | } | |
514f746b AR |
8751 | \f |
8752 | ||
8753 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
8754 | return 0 otherwise. */ | |
8755 | ||
8756 | static int | |
8757 | bp_loc_is_permanent (struct bp_location *loc) | |
8758 | { | |
8759 | int len; | |
8760 | CORE_ADDR addr; | |
1afeeb75 | 8761 | const gdb_byte *bpoint; |
514f746b | 8762 | gdb_byte *target_mem; |
939c61fa JK |
8763 | struct cleanup *cleanup; |
8764 | int retval = 0; | |
514f746b AR |
8765 | |
8766 | gdb_assert (loc != NULL); | |
8767 | ||
8768 | addr = loc->address; | |
1afeeb75 | 8769 | bpoint = gdbarch_breakpoint_from_pc (loc->gdbarch, &addr, &len); |
514f746b | 8770 | |
939c61fa | 8771 | /* Software breakpoints unsupported? */ |
1afeeb75 | 8772 | if (bpoint == NULL) |
939c61fa JK |
8773 | return 0; |
8774 | ||
514f746b AR |
8775 | target_mem = alloca (len); |
8776 | ||
939c61fa JK |
8777 | /* Enable the automatic memory restoration from breakpoints while |
8778 | we read the memory. Otherwise we could say about our temporary | |
8779 | breakpoints they are permanent. */ | |
6c95b8df PA |
8780 | cleanup = save_current_space_and_thread (); |
8781 | ||
8782 | switch_to_program_space_and_thread (loc->pspace); | |
8783 | make_show_memory_breakpoints_cleanup (0); | |
939c61fa | 8784 | |
514f746b | 8785 | if (target_read_memory (loc->address, target_mem, len) == 0 |
1afeeb75 | 8786 | && memcmp (target_mem, bpoint, len) == 0) |
939c61fa | 8787 | retval = 1; |
514f746b | 8788 | |
939c61fa JK |
8789 | do_cleanups (cleanup); |
8790 | ||
8791 | return retval; | |
514f746b AR |
8792 | } |
8793 | ||
e7e0cddf SS |
8794 | /* Build a command list for the dprintf corresponding to the current |
8795 | settings of the dprintf style options. */ | |
8796 | ||
8797 | static void | |
8798 | update_dprintf_command_list (struct breakpoint *b) | |
8799 | { | |
8800 | char *dprintf_args = b->extra_string; | |
8801 | char *printf_line = NULL; | |
8802 | ||
8803 | if (!dprintf_args) | |
8804 | return; | |
8805 | ||
8806 | dprintf_args = skip_spaces (dprintf_args); | |
8807 | ||
8808 | /* Allow a comma, as it may have terminated a location, but don't | |
8809 | insist on it. */ | |
8810 | if (*dprintf_args == ',') | |
8811 | ++dprintf_args; | |
8812 | dprintf_args = skip_spaces (dprintf_args); | |
8813 | ||
8814 | if (*dprintf_args != '"') | |
8815 | error (_("Bad format string, missing '\"'.")); | |
8816 | ||
d3ce09f5 | 8817 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8818 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8819 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
8820 | { |
8821 | if (!dprintf_function) | |
8822 | error (_("No function supplied for dprintf call")); | |
8823 | ||
8824 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
8825 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
8826 | dprintf_function, | |
8827 | dprintf_channel, | |
8828 | dprintf_args); | |
8829 | else | |
8830 | printf_line = xstrprintf ("call (void) %s (%s)", | |
8831 | dprintf_function, | |
8832 | dprintf_args); | |
8833 | } | |
d3ce09f5 SS |
8834 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8835 | { | |
8836 | if (target_can_run_breakpoint_commands ()) | |
8837 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8838 | else | |
8839 | { | |
8840 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8841 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8842 | } | |
8843 | } | |
e7e0cddf SS |
8844 | else |
8845 | internal_error (__FILE__, __LINE__, | |
8846 | _("Invalid dprintf style.")); | |
8847 | ||
8848 | /* Manufacture a printf/continue sequence. */ | |
8849 | if (printf_line) | |
8850 | { | |
8851 | struct command_line *printf_cmd_line, *cont_cmd_line = NULL; | |
8852 | ||
d3ce09f5 SS |
8853 | if (strcmp (dprintf_style, dprintf_style_agent) != 0) |
8854 | { | |
8855 | cont_cmd_line = xmalloc (sizeof (struct command_line)); | |
8856 | cont_cmd_line->control_type = simple_control; | |
8857 | cont_cmd_line->body_count = 0; | |
8858 | cont_cmd_line->body_list = NULL; | |
8859 | cont_cmd_line->next = NULL; | |
8860 | cont_cmd_line->line = xstrdup ("continue"); | |
8861 | } | |
e7e0cddf SS |
8862 | |
8863 | printf_cmd_line = xmalloc (sizeof (struct command_line)); | |
8864 | printf_cmd_line->control_type = simple_control; | |
8865 | printf_cmd_line->body_count = 0; | |
8866 | printf_cmd_line->body_list = NULL; | |
8867 | printf_cmd_line->next = cont_cmd_line; | |
8868 | printf_cmd_line->line = printf_line; | |
8869 | ||
8870 | breakpoint_set_commands (b, printf_cmd_line); | |
8871 | } | |
8872 | } | |
8873 | ||
8874 | /* Update all dprintf commands, making their command lists reflect | |
8875 | current style settings. */ | |
8876 | ||
8877 | static void | |
8878 | update_dprintf_commands (char *args, int from_tty, | |
8879 | struct cmd_list_element *c) | |
8880 | { | |
8881 | struct breakpoint *b; | |
8882 | ||
8883 | ALL_BREAKPOINTS (b) | |
8884 | { | |
8885 | if (b->type == bp_dprintf) | |
8886 | update_dprintf_command_list (b); | |
8887 | } | |
8888 | } | |
c3f6f71d | 8889 | |
018d34a4 VP |
8890 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
8891 | as textual description of the location, and COND_STRING | |
db107f19 | 8892 | as condition expression. */ |
018d34a4 VP |
8893 | |
8894 | static void | |
d9b3f62e PA |
8895 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
8896 | struct symtabs_and_lines sals, char *addr_string, | |
f8eba3c6 | 8897 | char *filter, char *cond_string, |
e7e0cddf | 8898 | char *extra_string, |
d9b3f62e PA |
8899 | enum bptype type, enum bpdisp disposition, |
8900 | int thread, int task, int ignore_count, | |
c0a91b2b | 8901 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8902 | int enabled, int internal, unsigned flags, |
8903 | int display_canonical) | |
018d34a4 | 8904 | { |
0d381245 | 8905 | int i; |
018d34a4 VP |
8906 | |
8907 | if (type == bp_hardware_breakpoint) | |
8908 | { | |
fbbd034e AS |
8909 | int target_resources_ok; |
8910 | ||
8911 | i = hw_breakpoint_used_count (); | |
8912 | target_resources_ok = | |
8913 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8914 | i + 1, 0); |
8915 | if (target_resources_ok == 0) | |
8916 | error (_("No hardware breakpoint support in the target.")); | |
8917 | else if (target_resources_ok < 0) | |
8918 | error (_("Hardware breakpoints used exceeds limit.")); | |
8919 | } | |
8920 | ||
6c95b8df PA |
8921 | gdb_assert (sals.nelts > 0); |
8922 | ||
0d381245 VP |
8923 | for (i = 0; i < sals.nelts; ++i) |
8924 | { | |
8925 | struct symtab_and_line sal = sals.sals[i]; | |
8926 | struct bp_location *loc; | |
8927 | ||
8928 | if (from_tty) | |
5af949e3 UW |
8929 | { |
8930 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
8931 | if (!loc_gdbarch) | |
8932 | loc_gdbarch = gdbarch; | |
8933 | ||
8934 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 8935 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 8936 | } |
0d381245 VP |
8937 | |
8938 | if (i == 0) | |
8939 | { | |
d9b3f62e | 8940 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 8941 | b->thread = thread; |
4a306c9a | 8942 | b->task = task; |
855a6e68 | 8943 | |
0d381245 | 8944 | b->cond_string = cond_string; |
e7e0cddf | 8945 | b->extra_string = extra_string; |
0d381245 | 8946 | b->ignore_count = ignore_count; |
41447f92 | 8947 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 8948 | b->disposition = disposition; |
6c95b8df | 8949 | |
44f238bb PA |
8950 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8951 | b->loc->inserted = 1; | |
8952 | ||
0fb4aa4b PA |
8953 | if (type == bp_static_tracepoint) |
8954 | { | |
d9b3f62e | 8955 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
8956 | struct static_tracepoint_marker marker; |
8957 | ||
983af33b | 8958 | if (strace_marker_p (b)) |
0fb4aa4b PA |
8959 | { |
8960 | /* We already know the marker exists, otherwise, we | |
8961 | wouldn't see a sal for it. */ | |
8962 | char *p = &addr_string[3]; | |
8963 | char *endp; | |
8964 | char *marker_str; | |
0fb4aa4b | 8965 | |
e9cafbcc | 8966 | p = skip_spaces (p); |
0fb4aa4b | 8967 | |
e9cafbcc | 8968 | endp = skip_to_space (p); |
0fb4aa4b PA |
8969 | |
8970 | marker_str = savestring (p, endp - p); | |
d9b3f62e | 8971 | t->static_trace_marker_id = marker_str; |
0fb4aa4b | 8972 | |
3e43a32a MS |
8973 | printf_filtered (_("Probed static tracepoint " |
8974 | "marker \"%s\"\n"), | |
d9b3f62e | 8975 | t->static_trace_marker_id); |
0fb4aa4b PA |
8976 | } |
8977 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
8978 | { | |
d9b3f62e | 8979 | t->static_trace_marker_id = xstrdup (marker.str_id); |
0fb4aa4b PA |
8980 | release_static_tracepoint_marker (&marker); |
8981 | ||
3e43a32a MS |
8982 | printf_filtered (_("Probed static tracepoint " |
8983 | "marker \"%s\"\n"), | |
d9b3f62e | 8984 | t->static_trace_marker_id); |
0fb4aa4b PA |
8985 | } |
8986 | else | |
3e43a32a MS |
8987 | warning (_("Couldn't determine the static " |
8988 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
8989 | } |
8990 | ||
0d381245 VP |
8991 | loc = b->loc; |
8992 | } | |
8993 | else | |
018d34a4 | 8994 | { |
39d61571 | 8995 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
8996 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8997 | loc->inserted = 1; | |
0d381245 VP |
8998 | } |
8999 | ||
514f746b AR |
9000 | if (bp_loc_is_permanent (loc)) |
9001 | make_breakpoint_permanent (b); | |
9002 | ||
0d381245 VP |
9003 | if (b->cond_string) |
9004 | { | |
9005 | char *arg = b->cond_string; | |
1bb9788d TT |
9006 | loc->cond = parse_exp_1 (&arg, loc->address, |
9007 | block_for_pc (loc->address), 0); | |
0d381245 | 9008 | if (*arg) |
588ae58c | 9009 | error (_("Garbage '%s' follows condition"), arg); |
018d34a4 | 9010 | } |
e7e0cddf SS |
9011 | |
9012 | /* Dynamic printf requires and uses additional arguments on the | |
9013 | command line, otherwise it's an error. */ | |
9014 | if (type == bp_dprintf) | |
9015 | { | |
9016 | if (b->extra_string) | |
9017 | update_dprintf_command_list (b); | |
9018 | else | |
9019 | error (_("Format string required")); | |
9020 | } | |
9021 | else if (b->extra_string) | |
588ae58c | 9022 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 9023 | } |
018d34a4 | 9024 | |
56435ebe | 9025 | b->display_canonical = display_canonical; |
018d34a4 VP |
9026 | if (addr_string) |
9027 | b->addr_string = addr_string; | |
9028 | else | |
9029 | /* addr_string has to be used or breakpoint_re_set will delete | |
9030 | me. */ | |
5af949e3 UW |
9031 | b->addr_string |
9032 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
f8eba3c6 | 9033 | b->filter = filter; |
d9b3f62e | 9034 | } |
018d34a4 | 9035 | |
d9b3f62e PA |
9036 | static void |
9037 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
9038 | struct symtabs_and_lines sals, char *addr_string, | |
f8eba3c6 | 9039 | char *filter, char *cond_string, |
e7e0cddf | 9040 | char *extra_string, |
d9b3f62e PA |
9041 | enum bptype type, enum bpdisp disposition, |
9042 | int thread, int task, int ignore_count, | |
c0a91b2b | 9043 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
9044 | int enabled, int internal, unsigned flags, |
9045 | int display_canonical) | |
d9b3f62e PA |
9046 | { |
9047 | struct breakpoint *b; | |
9048 | struct cleanup *old_chain; | |
9049 | ||
9050 | if (is_tracepoint_type (type)) | |
9051 | { | |
9052 | struct tracepoint *t; | |
9053 | ||
9054 | t = XCNEW (struct tracepoint); | |
9055 | b = &t->base; | |
9056 | } | |
9057 | else | |
9058 | b = XNEW (struct breakpoint); | |
9059 | ||
9060 | old_chain = make_cleanup (xfree, b); | |
9061 | ||
9062 | init_breakpoint_sal (b, gdbarch, | |
9063 | sals, addr_string, | |
e7e0cddf | 9064 | filter, cond_string, extra_string, |
d9b3f62e PA |
9065 | type, disposition, |
9066 | thread, task, ignore_count, | |
9067 | ops, from_tty, | |
44f238bb PA |
9068 | enabled, internal, flags, |
9069 | display_canonical); | |
d9b3f62e PA |
9070 | discard_cleanups (old_chain); |
9071 | ||
3ea46bff | 9072 | install_breakpoint (internal, b, 0); |
018d34a4 VP |
9073 | } |
9074 | ||
9075 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
9076 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
9077 | value. COND_STRING, if not NULL, specified the condition to be | |
9078 | used for all breakpoints. Essentially the only case where | |
9079 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
9080 | function. In that case, it's still not possible to specify | |
9081 | separate conditions for different overloaded functions, so | |
9082 | we take just a single condition string. | |
9083 | ||
c3f6f71d | 9084 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 9085 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
9086 | array contents). If the function fails (error() is called), the |
9087 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 9088 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
9089 | |
9090 | static void | |
8cdf0e15 | 9091 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 9092 | struct linespec_result *canonical, |
e7e0cddf | 9093 | char *cond_string, char *extra_string, |
8cdf0e15 VP |
9094 | enum bptype type, enum bpdisp disposition, |
9095 | int thread, int task, int ignore_count, | |
c0a91b2b | 9096 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 9097 | int enabled, int internal, unsigned flags) |
c906108c | 9098 | { |
018d34a4 | 9099 | int i; |
f8eba3c6 | 9100 | struct linespec_sals *lsal; |
cc59ec59 | 9101 | |
f8eba3c6 TT |
9102 | if (canonical->pre_expanded) |
9103 | gdb_assert (VEC_length (linespec_sals, canonical->sals) == 1); | |
9104 | ||
9105 | for (i = 0; VEC_iterate (linespec_sals, canonical->sals, i, lsal); ++i) | |
c3f6f71d | 9106 | { |
f8eba3c6 TT |
9107 | /* Note that 'addr_string' can be NULL in the case of a plain |
9108 | 'break', without arguments. */ | |
9109 | char *addr_string = (canonical->addr_string | |
9110 | ? xstrdup (canonical->addr_string) | |
9111 | : NULL); | |
9112 | char *filter_string = lsal->canonical ? xstrdup (lsal->canonical) : NULL; | |
9113 | struct cleanup *inner = make_cleanup (xfree, addr_string); | |
0d381245 | 9114 | |
f8eba3c6 TT |
9115 | make_cleanup (xfree, filter_string); |
9116 | create_breakpoint_sal (gdbarch, lsal->sals, | |
9117 | addr_string, | |
9118 | filter_string, | |
e7e0cddf SS |
9119 | cond_string, extra_string, |
9120 | type, disposition, | |
84f4c1fe | 9121 | thread, task, ignore_count, ops, |
44f238bb | 9122 | from_tty, enabled, internal, flags, |
56435ebe | 9123 | canonical->special_display); |
f8eba3c6 | 9124 | discard_cleanups (inner); |
c3f6f71d | 9125 | } |
c3f6f71d | 9126 | } |
c906108c | 9127 | |
9998af43 | 9128 | /* Parse ADDRESS which is assumed to be a SAL specification possibly |
c3f6f71d | 9129 | followed by conditionals. On return, SALS contains an array of SAL |
4a64f543 | 9130 | addresses found. ADDR_STRING contains a vector of (canonical) |
9998af43 TJB |
9131 | address strings. ADDRESS points to the end of the SAL. |
9132 | ||
9133 | The array and the line spec strings are allocated on the heap, it is | |
9134 | the caller's responsibility to free them. */ | |
c906108c | 9135 | |
b9362cc7 | 9136 | static void |
c3f6f71d | 9137 | parse_breakpoint_sals (char **address, |
58438ac1 | 9138 | struct linespec_result *canonical) |
c3f6f71d | 9139 | { |
c3f6f71d | 9140 | /* If no arg given, or if first arg is 'if ', use the default |
4a64f543 | 9141 | breakpoint. */ |
c3f6f71d JM |
9142 | if ((*address) == NULL |
9143 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c | 9144 | { |
1bfeeb0f JL |
9145 | /* The last displayed codepoint, if it's valid, is our default breakpoint |
9146 | address. */ | |
9147 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9148 | { |
f8eba3c6 | 9149 | struct linespec_sals lsal; |
c3f6f71d | 9150 | struct symtab_and_line sal; |
1c8cdcb1 | 9151 | CORE_ADDR pc; |
cc59ec59 | 9152 | |
4a64f543 | 9153 | init_sal (&sal); /* Initialize to zeroes. */ |
f8eba3c6 | 9154 | lsal.sals.sals = (struct symtab_and_line *) |
c906108c | 9155 | xmalloc (sizeof (struct symtab_and_line)); |
1bfeeb0f JL |
9156 | |
9157 | /* Set sal's pspace, pc, symtab, and line to the values | |
1c8cdcb1 JK |
9158 | corresponding to the last call to print_frame_info. |
9159 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
9160 | as the breakpoint line number is inappropriate otherwise. | |
9161 | find_pc_line would adjust PC, re-set it back. */ | |
1bfeeb0f | 9162 | get_last_displayed_sal (&sal); |
1c8cdcb1 JK |
9163 | pc = sal.pc; |
9164 | sal = find_pc_line (pc, 0); | |
00903456 | 9165 | |
4a64f543 | 9166 | /* "break" without arguments is equivalent to "break *PC" |
1bfeeb0f JL |
9167 | where PC is the last displayed codepoint's address. So |
9168 | make sure to set sal.explicit_pc to prevent GDB from | |
9169 | trying to expand the list of sals to include all other | |
9170 | instances with the same symtab and line. */ | |
1c8cdcb1 | 9171 | sal.pc = pc; |
00903456 JK |
9172 | sal.explicit_pc = 1; |
9173 | ||
f8eba3c6 TT |
9174 | lsal.sals.sals[0] = sal; |
9175 | lsal.sals.nelts = 1; | |
9176 | lsal.canonical = NULL; | |
9177 | ||
9178 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
c906108c SS |
9179 | } |
9180 | else | |
8a3fe4f8 | 9181 | error (_("No default breakpoint address now.")); |
c906108c SS |
9182 | } |
9183 | else | |
9184 | { | |
cc80f267 JK |
9185 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
9186 | ||
c906108c | 9187 | /* Force almost all breakpoints to be in terms of the |
4a64f543 MS |
9188 | current_source_symtab (which is decode_line_1's default). |
9189 | This should produce the results we want almost all of the | |
cc80f267 JK |
9190 | time while leaving default_breakpoint_* alone. |
9191 | ||
9192 | ObjC: However, don't match an Objective-C method name which | |
9193 | may have a '+' or '-' succeeded by a '['. */ | |
9194 | if (last_displayed_sal_is_valid () | |
9195 | && (!cursal.symtab | |
9196 | || ((strchr ("+-", (*address)[0]) != NULL) | |
9197 | && ((*address)[1] != '[')))) | |
f8eba3c6 TT |
9198 | decode_line_full (address, DECODE_LINE_FUNFIRSTLINE, |
9199 | get_last_displayed_symtab (), | |
9200 | get_last_displayed_line (), | |
9201 | canonical, NULL, NULL); | |
c906108c | 9202 | else |
f8eba3c6 | 9203 | decode_line_full (address, DECODE_LINE_FUNFIRSTLINE, |
cc80f267 | 9204 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c906108c | 9205 | } |
c3f6f71d | 9206 | } |
c906108c | 9207 | |
c906108c | 9208 | |
c3f6f71d | 9209 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9210 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9211 | |
b9362cc7 | 9212 | static void |
23e7acfb | 9213 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals) |
c3f6f71d JM |
9214 | { |
9215 | int i; | |
cc59ec59 | 9216 | |
c3f6f71d | 9217 | for (i = 0; i < sals->nelts; i++) |
ee53e872 | 9218 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
9219 | } |
9220 | ||
7a697b8d SS |
9221 | /* Fast tracepoints may have restrictions on valid locations. For |
9222 | instance, a fast tracepoint using a jump instead of a trap will | |
9223 | likely have to overwrite more bytes than a trap would, and so can | |
9224 | only be placed where the instruction is longer than the jump, or a | |
9225 | multi-instruction sequence does not have a jump into the middle of | |
9226 | it, etc. */ | |
9227 | ||
9228 | static void | |
9229 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
9230 | struct symtabs_and_lines *sals) | |
9231 | { | |
9232 | int i, rslt; | |
9233 | struct symtab_and_line *sal; | |
9234 | char *msg; | |
9235 | struct cleanup *old_chain; | |
9236 | ||
9237 | for (i = 0; i < sals->nelts; i++) | |
9238 | { | |
f8eba3c6 TT |
9239 | struct gdbarch *sarch; |
9240 | ||
7a697b8d SS |
9241 | sal = &sals->sals[i]; |
9242 | ||
f8eba3c6 TT |
9243 | sarch = get_sal_arch (*sal); |
9244 | /* We fall back to GDBARCH if there is no architecture | |
9245 | associated with SAL. */ | |
9246 | if (sarch == NULL) | |
9247 | sarch = gdbarch; | |
9248 | rslt = gdbarch_fast_tracepoint_valid_at (sarch, sal->pc, | |
7a697b8d SS |
9249 | NULL, &msg); |
9250 | old_chain = make_cleanup (xfree, msg); | |
9251 | ||
9252 | if (!rslt) | |
9253 | error (_("May not have a fast tracepoint at 0x%s%s"), | |
f8eba3c6 | 9254 | paddress (sarch, sal->pc), (msg ? msg : "")); |
7a697b8d SS |
9255 | |
9256 | do_cleanups (old_chain); | |
9257 | } | |
9258 | } | |
9259 | ||
af4908ba KS |
9260 | /* Issue an invalid thread ID error. */ |
9261 | ||
9262 | static void ATTRIBUTE_NORETURN | |
9263 | invalid_thread_id_error (int id) | |
9264 | { | |
9265 | error (_("Unknown thread %d."), id); | |
9266 | } | |
9267 | ||
018d34a4 VP |
9268 | /* Given TOK, a string specification of condition and thread, as |
9269 | accepted by the 'break' command, extract the condition | |
9270 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9271 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9272 | If no condition is found, *COND_STRING is set to NULL. |
9273 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9274 | |
9275 | static void | |
9276 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
e7e0cddf SS |
9277 | char **cond_string, int *thread, int *task, |
9278 | char **rest) | |
018d34a4 VP |
9279 | { |
9280 | *cond_string = NULL; | |
9281 | *thread = -1; | |
ed1d1739 KS |
9282 | *task = 0; |
9283 | *rest = NULL; | |
9284 | ||
018d34a4 VP |
9285 | while (tok && *tok) |
9286 | { | |
9287 | char *end_tok; | |
9288 | int toklen; | |
9289 | char *cond_start = NULL; | |
9290 | char *cond_end = NULL; | |
cc59ec59 | 9291 | |
e9cafbcc | 9292 | tok = skip_spaces (tok); |
e7e0cddf SS |
9293 | |
9294 | if ((*tok == '"' || *tok == ',') && rest) | |
9295 | { | |
9296 | *rest = savestring (tok, strlen (tok)); | |
9297 | return; | |
9298 | } | |
9299 | ||
e9cafbcc | 9300 | end_tok = skip_to_space (tok); |
d634f2de | 9301 | |
018d34a4 | 9302 | toklen = end_tok - tok; |
d634f2de | 9303 | |
018d34a4 VP |
9304 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9305 | { | |
f7545552 TT |
9306 | struct expression *expr; |
9307 | ||
018d34a4 | 9308 | tok = cond_start = end_tok + 1; |
1bb9788d | 9309 | expr = parse_exp_1 (&tok, pc, block_for_pc (pc), 0); |
f7545552 | 9310 | xfree (expr); |
018d34a4 | 9311 | cond_end = tok; |
d634f2de | 9312 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 VP |
9313 | } |
9314 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
9315 | { | |
9316 | char *tmptok; | |
d634f2de | 9317 | |
018d34a4 VP |
9318 | tok = end_tok + 1; |
9319 | tmptok = tok; | |
9320 | *thread = strtol (tok, &tok, 0); | |
9321 | if (tok == tmptok) | |
9322 | error (_("Junk after thread keyword.")); | |
9323 | if (!valid_thread_id (*thread)) | |
af4908ba | 9324 | invalid_thread_id_error (*thread); |
018d34a4 | 9325 | } |
4a306c9a JB |
9326 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9327 | { | |
9328 | char *tmptok; | |
9329 | ||
9330 | tok = end_tok + 1; | |
9331 | tmptok = tok; | |
9332 | *task = strtol (tok, &tok, 0); | |
9333 | if (tok == tmptok) | |
9334 | error (_("Junk after task keyword.")); | |
9335 | if (!valid_task_id (*task)) | |
b6199126 | 9336 | error (_("Unknown task %d."), *task); |
4a306c9a | 9337 | } |
e7e0cddf SS |
9338 | else if (rest) |
9339 | { | |
9340 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9341 | return; |
e7e0cddf | 9342 | } |
018d34a4 VP |
9343 | else |
9344 | error (_("Junk at end of arguments.")); | |
9345 | } | |
9346 | } | |
9347 | ||
0fb4aa4b PA |
9348 | /* Decode a static tracepoint marker spec. */ |
9349 | ||
9350 | static struct symtabs_and_lines | |
9351 | decode_static_tracepoint_spec (char **arg_p) | |
9352 | { | |
9353 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
9354 | struct symtabs_and_lines sals; | |
0fb4aa4b PA |
9355 | struct cleanup *old_chain; |
9356 | char *p = &(*arg_p)[3]; | |
9357 | char *endp; | |
9358 | char *marker_str; | |
9359 | int i; | |
9360 | ||
e9cafbcc | 9361 | p = skip_spaces (p); |
0fb4aa4b | 9362 | |
e9cafbcc | 9363 | endp = skip_to_space (p); |
0fb4aa4b PA |
9364 | |
9365 | marker_str = savestring (p, endp - p); | |
9366 | old_chain = make_cleanup (xfree, marker_str); | |
9367 | ||
9368 | markers = target_static_tracepoint_markers_by_strid (marker_str); | |
9369 | if (VEC_empty(static_tracepoint_marker_p, markers)) | |
9370 | error (_("No known static tracepoint marker named %s"), marker_str); | |
9371 | ||
9372 | sals.nelts = VEC_length(static_tracepoint_marker_p, markers); | |
9373 | sals.sals = xmalloc (sizeof *sals.sals * sals.nelts); | |
9374 | ||
9375 | for (i = 0; i < sals.nelts; i++) | |
9376 | { | |
9377 | struct static_tracepoint_marker *marker; | |
9378 | ||
9379 | marker = VEC_index (static_tracepoint_marker_p, markers, i); | |
9380 | ||
9381 | init_sal (&sals.sals[i]); | |
9382 | ||
9383 | sals.sals[i] = find_pc_line (marker->address, 0); | |
9384 | sals.sals[i].pc = marker->address; | |
9385 | ||
9386 | release_static_tracepoint_marker (marker); | |
9387 | } | |
9388 | ||
9389 | do_cleanups (old_chain); | |
9390 | ||
9391 | *arg_p = endp; | |
9392 | return sals; | |
9393 | } | |
9394 | ||
fd9b8c24 PA |
9395 | /* Set a breakpoint. This function is shared between CLI and MI |
9396 | functions for setting a breakpoint. This function has two major | |
9397 | modes of operations, selected by the PARSE_CONDITION_AND_THREAD | |
9398 | parameter. If non-zero, the function will parse arg, extracting | |
4a64f543 MS |
9399 | breakpoint location, address and thread. Otherwise, ARG is just |
9400 | the location of breakpoint, with condition and thread specified by | |
9401 | the COND_STRING and THREAD parameters. If INTERNAL is non-zero, | |
9402 | the breakpoint number will be allocated from the internal | |
9403 | breakpoint count. Returns true if any breakpoint was created; | |
9404 | false otherwise. */ | |
0101ce28 | 9405 | |
8cdf0e15 VP |
9406 | int |
9407 | create_breakpoint (struct gdbarch *gdbarch, | |
e7e0cddf SS |
9408 | char *arg, char *cond_string, |
9409 | int thread, char *extra_string, | |
8cdf0e15 | 9410 | int parse_condition_and_thread, |
0fb4aa4b | 9411 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9412 | int ignore_count, |
9413 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9414 | const struct breakpoint_ops *ops, |
44f238bb PA |
9415 | int from_tty, int enabled, int internal, |
9416 | unsigned flags) | |
c3f6f71d | 9417 | { |
b78a6381 | 9418 | volatile struct gdb_exception e; |
f8eba3c6 | 9419 | char *copy_arg = NULL; |
c3f6f71d | 9420 | char *addr_start = arg; |
7efd8fc2 | 9421 | struct linespec_result canonical; |
c3f6f71d | 9422 | struct cleanup *old_chain; |
80c99de1 | 9423 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 9424 | int pending = 0; |
4a306c9a | 9425 | int task = 0; |
86b17b60 | 9426 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9427 | |
348d480f PA |
9428 | gdb_assert (ops != NULL); |
9429 | ||
7efd8fc2 | 9430 | init_linespec_result (&canonical); |
c3f6f71d | 9431 | |
b78a6381 TT |
9432 | TRY_CATCH (e, RETURN_MASK_ALL) |
9433 | { | |
983af33b SDJ |
9434 | ops->create_sals_from_address (&arg, &canonical, type_wanted, |
9435 | addr_start, ©_arg); | |
b78a6381 | 9436 | } |
0101ce28 JJ |
9437 | |
9438 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 9439 | switch (e.reason) |
0101ce28 | 9440 | { |
983af33b SDJ |
9441 | case GDB_NO_ERROR: |
9442 | if (VEC_empty (linespec_sals, canonical.sals)) | |
9443 | return 0; | |
9444 | break; | |
05ff989b AC |
9445 | case RETURN_ERROR: |
9446 | switch (e.error) | |
0101ce28 | 9447 | { |
05ff989b | 9448 | case NOT_FOUND_ERROR: |
0101ce28 | 9449 | |
05ff989b AC |
9450 | /* If pending breakpoint support is turned off, throw |
9451 | error. */ | |
fa8d40ab JJ |
9452 | |
9453 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
9454 | throw_exception (e); |
9455 | ||
9456 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9457 | |
05ff989b AC |
9458 | /* If pending breakpoint support is auto query and the user |
9459 | selects no, then simply return the error code. */ | |
059fb39f | 9460 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9461 | && !nquery (_("Make %s pending on future shared library load? "), |
9462 | bptype_string (type_wanted))) | |
fd9b8c24 | 9463 | return 0; |
fa8d40ab | 9464 | |
05ff989b AC |
9465 | /* At this point, either the user was queried about setting |
9466 | a pending breakpoint and selected yes, or pending | |
9467 | breakpoint behavior is on and thus a pending breakpoint | |
9468 | is defaulted on behalf of the user. */ | |
f8eba3c6 TT |
9469 | { |
9470 | struct linespec_sals lsal; | |
9471 | ||
9472 | copy_arg = xstrdup (addr_start); | |
9473 | lsal.canonical = xstrdup (copy_arg); | |
9474 | lsal.sals.nelts = 1; | |
9475 | lsal.sals.sals = XNEW (struct symtab_and_line); | |
9476 | init_sal (&lsal.sals.sals[0]); | |
9477 | pending = 1; | |
9478 | VEC_safe_push (linespec_sals, canonical.sals, &lsal); | |
9479 | } | |
05ff989b AC |
9480 | break; |
9481 | default: | |
98deb0da | 9482 | throw_exception (e); |
0101ce28 | 9483 | } |
2abae994 | 9484 | break; |
05ff989b | 9485 | default: |
983af33b | 9486 | throw_exception (e); |
0101ce28 | 9487 | } |
c3f6f71d | 9488 | |
4a64f543 | 9489 | /* Create a chain of things that always need to be cleaned up. */ |
f8eba3c6 | 9490 | old_chain = make_cleanup_destroy_linespec_result (&canonical); |
c3f6f71d | 9491 | |
c3f6f71d JM |
9492 | /* ----------------------------- SNIP ----------------------------- |
9493 | Anything added to the cleanup chain beyond this point is assumed | |
9494 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
9495 | then the memory is not reclaimed. */ |
9496 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d | 9497 | |
c3f6f71d JM |
9498 | /* Resolve all line numbers to PC's and verify that the addresses |
9499 | are ok for the target. */ | |
0101ce28 | 9500 | if (!pending) |
f8eba3c6 TT |
9501 | { |
9502 | int ix; | |
9503 | struct linespec_sals *iter; | |
9504 | ||
9505 | for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix) | |
9506 | breakpoint_sals_to_pc (&iter->sals); | |
9507 | } | |
c3f6f71d | 9508 | |
7a697b8d | 9509 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9510 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 TT |
9511 | { |
9512 | int ix; | |
9513 | struct linespec_sals *iter; | |
9514 | ||
9515 | for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix) | |
9516 | check_fast_tracepoint_sals (gdbarch, &iter->sals); | |
9517 | } | |
7a697b8d | 9518 | |
c3f6f71d JM |
9519 | /* Verify that condition can be parsed, before setting any |
9520 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9521 | breakpoint. */ |
0101ce28 | 9522 | if (!pending) |
c3f6f71d | 9523 | { |
f8eba3c6 TT |
9524 | struct linespec_sals *lsal; |
9525 | ||
9526 | lsal = VEC_index (linespec_sals, canonical.sals, 0); | |
9527 | ||
2f069f6f | 9528 | if (parse_condition_and_thread) |
72b2ff0e | 9529 | { |
e7e0cddf | 9530 | char *rest; |
72b2ff0e VP |
9531 | /* Here we only parse 'arg' to separate condition |
9532 | from thread number, so parsing in context of first | |
9533 | sal is OK. When setting the breakpoint we'll | |
9534 | re-parse it in context of each sal. */ | |
ed1d1739 | 9535 | |
f8eba3c6 | 9536 | find_condition_and_thread (arg, lsal->sals.sals[0].pc, &cond_string, |
e7e0cddf | 9537 | &thread, &task, &rest); |
72b2ff0e VP |
9538 | if (cond_string) |
9539 | make_cleanup (xfree, cond_string); | |
e7e0cddf SS |
9540 | if (rest) |
9541 | make_cleanup (xfree, rest); | |
9542 | if (rest) | |
9543 | extra_string = rest; | |
72b2ff0e | 9544 | } |
2f069f6f | 9545 | else |
72b2ff0e VP |
9546 | { |
9547 | /* Create a private copy of condition string. */ | |
9548 | if (cond_string) | |
9549 | { | |
9550 | cond_string = xstrdup (cond_string); | |
9551 | make_cleanup (xfree, cond_string); | |
9552 | } | |
e7e0cddf SS |
9553 | /* Create a private copy of any extra string. */ |
9554 | if (extra_string) | |
9555 | { | |
9556 | extra_string = xstrdup (extra_string); | |
9557 | make_cleanup (xfree, extra_string); | |
9558 | } | |
72b2ff0e | 9559 | } |
0fb4aa4b | 9560 | |
983af33b | 9561 | ops->create_breakpoints_sal (gdbarch, &canonical, lsal, |
e7e0cddf | 9562 | cond_string, extra_string, type_wanted, |
d9b3f62e PA |
9563 | tempflag ? disp_del : disp_donttouch, |
9564 | thread, task, ignore_count, ops, | |
44f238bb | 9565 | from_tty, enabled, internal, flags); |
c906108c | 9566 | } |
0101ce28 JJ |
9567 | else |
9568 | { | |
0101ce28 JJ |
9569 | struct breakpoint *b; |
9570 | ||
0101ce28 JJ |
9571 | make_cleanup (xfree, copy_arg); |
9572 | ||
bfccc43c YQ |
9573 | if (is_tracepoint_type (type_wanted)) |
9574 | { | |
9575 | struct tracepoint *t; | |
9576 | ||
9577 | t = XCNEW (struct tracepoint); | |
9578 | b = &t->base; | |
9579 | } | |
9580 | else | |
9581 | b = XNEW (struct breakpoint); | |
9582 | ||
9583 | init_raw_breakpoint_without_location (b, gdbarch, type_wanted, ops); | |
9584 | ||
f8eba3c6 | 9585 | b->addr_string = copy_arg; |
e12c7713 MK |
9586 | if (parse_condition_and_thread) |
9587 | b->cond_string = NULL; | |
9588 | else | |
9589 | { | |
9590 | /* Create a private copy of condition string. */ | |
9591 | if (cond_string) | |
9592 | { | |
9593 | cond_string = xstrdup (cond_string); | |
9594 | make_cleanup (xfree, cond_string); | |
9595 | } | |
9596 | b->cond_string = cond_string; | |
9597 | } | |
e7e0cddf | 9598 | b->extra_string = NULL; |
0101ce28 | 9599 | b->ignore_count = ignore_count; |
0101ce28 | 9600 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9601 | b->condition_not_parsed = 1; |
41447f92 | 9602 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
9603 | if ((type_wanted != bp_breakpoint |
9604 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 9605 | b->pspace = current_program_space; |
8bea4e01 | 9606 | |
bfccc43c | 9607 | install_breakpoint (internal, b, 0); |
0101ce28 JJ |
9608 | } |
9609 | ||
f8eba3c6 | 9610 | if (VEC_length (linespec_sals, canonical.sals) > 1) |
95a42b64 | 9611 | { |
3e43a32a MS |
9612 | warning (_("Multiple breakpoints were set.\nUse the " |
9613 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9614 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9615 | } |
9616 | ||
80c99de1 PA |
9617 | /* That's it. Discard the cleanups for data inserted into the |
9618 | breakpoint. */ | |
9619 | discard_cleanups (bkpt_chain); | |
9620 | /* But cleanup everything else. */ | |
c3f6f71d | 9621 | do_cleanups (old_chain); |
217dc9e2 | 9622 | |
80c99de1 | 9623 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
217dc9e2 | 9624 | update_global_location_list (1); |
fd9b8c24 PA |
9625 | |
9626 | return 1; | |
c3f6f71d | 9627 | } |
c906108c | 9628 | |
348d480f | 9629 | /* Set a breakpoint. |
72b2ff0e VP |
9630 | ARG is a string describing breakpoint address, |
9631 | condition, and thread. | |
9632 | FLAG specifies if a breakpoint is hardware on, | |
9633 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9634 | and BP_TEMPFLAG. */ | |
348d480f | 9635 | |
98deb0da | 9636 | static void |
72b2ff0e | 9637 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 9638 | { |
72b2ff0e | 9639 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9640 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9641 | ? bp_hardware_breakpoint | |
9642 | : bp_breakpoint); | |
55aa24fb SDJ |
9643 | struct breakpoint_ops *ops; |
9644 | const char *arg_cp = arg; | |
9645 | ||
9646 | /* Matching breakpoints on probes. */ | |
9647 | if (arg && probe_linespec_to_ops (&arg_cp) != NULL) | |
9648 | ops = &bkpt_probe_breakpoint_ops; | |
9649 | else | |
9650 | ops = &bkpt_breakpoint_ops; | |
c3f6f71d | 9651 | |
8cdf0e15 VP |
9652 | create_breakpoint (get_current_arch (), |
9653 | arg, | |
e7e0cddf | 9654 | NULL, 0, NULL, 1 /* parse arg */, |
0fb4aa4b | 9655 | tempflag, type_wanted, |
8cdf0e15 VP |
9656 | 0 /* Ignore count */, |
9657 | pending_break_support, | |
55aa24fb | 9658 | ops, |
8cdf0e15 | 9659 | from_tty, |
84f4c1fe | 9660 | 1 /* enabled */, |
44f238bb PA |
9661 | 0 /* internal */, |
9662 | 0); | |
c906108c SS |
9663 | } |
9664 | ||
c906108c SS |
9665 | /* Helper function for break_command_1 and disassemble_command. */ |
9666 | ||
9667 | void | |
fba45db2 | 9668 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9669 | { |
9670 | CORE_ADDR pc; | |
9671 | ||
9672 | if (sal->pc == 0 && sal->symtab != NULL) | |
9673 | { | |
9674 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9675 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
9676 | sal->line, sal->symtab->filename); |
9677 | sal->pc = pc; | |
6a048695 | 9678 | |
4a64f543 MS |
9679 | /* If this SAL corresponds to a breakpoint inserted using a line |
9680 | number, then skip the function prologue if necessary. */ | |
6a048695 | 9681 | if (sal->explicit_line) |
059acae7 | 9682 | skip_prologue_sal (sal); |
c906108c SS |
9683 | } |
9684 | ||
9685 | if (sal->section == 0 && sal->symtab != NULL) | |
9686 | { | |
9687 | struct blockvector *bv; | |
c5aa993b JM |
9688 | struct block *b; |
9689 | struct symbol *sym; | |
c906108c | 9690 | |
801e3a5b | 9691 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
9692 | if (bv != NULL) |
9693 | { | |
7f0df278 | 9694 | sym = block_linkage_function (b); |
c906108c SS |
9695 | if (sym != NULL) |
9696 | { | |
9697 | fixup_symbol_section (sym, sal->symtab->objfile); | |
714835d5 | 9698 | sal->section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
9699 | } |
9700 | else | |
9701 | { | |
4a64f543 MS |
9702 | /* It really is worthwhile to have the section, so we'll |
9703 | just have to look harder. This case can be executed | |
9704 | if we have line numbers but no functions (as can | |
9705 | happen in assembly source). */ | |
c906108c | 9706 | |
c5aa993b | 9707 | struct minimal_symbol *msym; |
6c95b8df PA |
9708 | struct cleanup *old_chain = save_current_space_and_thread (); |
9709 | ||
9710 | switch_to_program_space_and_thread (sal->pspace); | |
c906108c SS |
9711 | |
9712 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
9713 | if (msym) | |
714835d5 | 9714 | sal->section = SYMBOL_OBJ_SECTION (msym); |
6c95b8df PA |
9715 | |
9716 | do_cleanups (old_chain); | |
c906108c SS |
9717 | } |
9718 | } | |
9719 | } | |
9720 | } | |
9721 | ||
9722 | void | |
fba45db2 | 9723 | break_command (char *arg, int from_tty) |
c906108c | 9724 | { |
db107f19 | 9725 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9726 | } |
9727 | ||
c906108c | 9728 | void |
fba45db2 | 9729 | tbreak_command (char *arg, int from_tty) |
c906108c | 9730 | { |
db107f19 | 9731 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9732 | } |
9733 | ||
c906108c | 9734 | static void |
fba45db2 | 9735 | hbreak_command (char *arg, int from_tty) |
c906108c | 9736 | { |
db107f19 | 9737 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9738 | } |
9739 | ||
9740 | static void | |
fba45db2 | 9741 | thbreak_command (char *arg, int from_tty) |
c906108c | 9742 | { |
db107f19 | 9743 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9744 | } |
9745 | ||
9746 | static void | |
fba45db2 | 9747 | stop_command (char *arg, int from_tty) |
c906108c | 9748 | { |
a3f17187 | 9749 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9750 | Usage: stop in <function | address>\n\ |
a3f17187 | 9751 | stop at <line>\n")); |
c906108c SS |
9752 | } |
9753 | ||
9754 | static void | |
fba45db2 | 9755 | stopin_command (char *arg, int from_tty) |
c906108c SS |
9756 | { |
9757 | int badInput = 0; | |
9758 | ||
c5aa993b | 9759 | if (arg == (char *) NULL) |
c906108c SS |
9760 | badInput = 1; |
9761 | else if (*arg != '*') | |
9762 | { | |
9763 | char *argptr = arg; | |
9764 | int hasColon = 0; | |
9765 | ||
4a64f543 | 9766 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 9767 | say it is bad, otherwise, it should be an address or |
4a64f543 | 9768 | function/method name. */ |
c906108c | 9769 | while (*argptr && !hasColon) |
c5aa993b JM |
9770 | { |
9771 | hasColon = (*argptr == ':'); | |
9772 | argptr++; | |
9773 | } | |
c906108c SS |
9774 | |
9775 | if (hasColon) | |
c5aa993b | 9776 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9777 | else |
c5aa993b | 9778 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9779 | } |
9780 | ||
9781 | if (badInput) | |
a3f17187 | 9782 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9783 | else |
db107f19 | 9784 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9785 | } |
9786 | ||
9787 | static void | |
fba45db2 | 9788 | stopat_command (char *arg, int from_tty) |
c906108c SS |
9789 | { |
9790 | int badInput = 0; | |
9791 | ||
c5aa993b | 9792 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
9793 | badInput = 1; |
9794 | else | |
9795 | { | |
9796 | char *argptr = arg; | |
9797 | int hasColon = 0; | |
9798 | ||
4a64f543 MS |
9799 | /* Look for a ':'. If there is a '::' then get out, otherwise |
9800 | it is probably a line number. */ | |
c906108c | 9801 | while (*argptr && !hasColon) |
c5aa993b JM |
9802 | { |
9803 | hasColon = (*argptr == ':'); | |
9804 | argptr++; | |
9805 | } | |
c906108c SS |
9806 | |
9807 | if (hasColon) | |
c5aa993b | 9808 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 9809 | else |
c5aa993b | 9810 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
9811 | } |
9812 | ||
9813 | if (badInput) | |
a3f17187 | 9814 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 9815 | else |
db107f19 | 9816 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9817 | } |
9818 | ||
e7e0cddf SS |
9819 | void dprintf_command (char *arg, int from_tty); |
9820 | ||
9821 | /* The dynamic printf command is mostly like a regular breakpoint, but | |
9822 | with a prewired command list consisting of a single output command, | |
9823 | built from extra arguments supplied on the dprintf command | |
9824 | line. */ | |
9825 | ||
9826 | void | |
9827 | dprintf_command (char *arg, int from_tty) | |
9828 | { | |
9829 | create_breakpoint (get_current_arch (), | |
9830 | arg, | |
9831 | NULL, 0, NULL, 1 /* parse arg */, | |
9832 | 0, bp_dprintf, | |
9833 | 0 /* Ignore count */, | |
9834 | pending_break_support, | |
9835 | &dprintf_breakpoint_ops, | |
9836 | from_tty, | |
9837 | 1 /* enabled */, | |
9838 | 0 /* internal */, | |
9839 | 0); | |
9840 | } | |
9841 | ||
d3ce09f5 SS |
9842 | static void |
9843 | agent_printf_command (char *arg, int from_tty) | |
9844 | { | |
9845 | error (_("May only run agent-printf on the target")); | |
9846 | } | |
9847 | ||
f1310107 TJB |
9848 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
9849 | ranged breakpoints. */ | |
9850 | ||
9851 | static int | |
9852 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
9853 | struct address_space *aspace, | |
09ac7c10 TT |
9854 | CORE_ADDR bp_addr, |
9855 | const struct target_waitstatus *ws) | |
f1310107 | 9856 | { |
09ac7c10 | 9857 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 9858 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
9859 | return 0; |
9860 | ||
f1310107 TJB |
9861 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9862 | bl->length, aspace, bp_addr); | |
9863 | } | |
9864 | ||
9865 | /* Implement the "resources_needed" breakpoint_ops method for | |
9866 | ranged breakpoints. */ | |
9867 | ||
9868 | static int | |
9869 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
9870 | { | |
9871 | return target_ranged_break_num_registers (); | |
9872 | } | |
9873 | ||
9874 | /* Implement the "print_it" breakpoint_ops method for | |
9875 | ranged breakpoints. */ | |
9876 | ||
9877 | static enum print_stop_action | |
348d480f | 9878 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 9879 | { |
348d480f | 9880 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 9881 | struct bp_location *bl = b->loc; |
79a45e25 | 9882 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9883 | |
9884 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9885 | ||
9886 | /* Ranged breakpoints have only one location. */ | |
9887 | gdb_assert (bl && bl->next == NULL); | |
9888 | ||
9889 | annotate_breakpoint (b->number); | |
9890 | if (b->disposition == disp_del) | |
9891 | ui_out_text (uiout, "\nTemporary ranged breakpoint "); | |
9892 | else | |
9893 | ui_out_text (uiout, "\nRanged breakpoint "); | |
9894 | if (ui_out_is_mi_like_p (uiout)) | |
9895 | { | |
9896 | ui_out_field_string (uiout, "reason", | |
9897 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
9898 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
9899 | } | |
9900 | ui_out_field_int (uiout, "bkptno", b->number); | |
9901 | ui_out_text (uiout, ", "); | |
9902 | ||
9903 | return PRINT_SRC_AND_LOC; | |
9904 | } | |
9905 | ||
9906 | /* Implement the "print_one" breakpoint_ops method for | |
9907 | ranged breakpoints. */ | |
9908 | ||
9909 | static void | |
9910 | print_one_ranged_breakpoint (struct breakpoint *b, | |
9911 | struct bp_location **last_loc) | |
9912 | { | |
9913 | struct bp_location *bl = b->loc; | |
9914 | struct value_print_options opts; | |
79a45e25 | 9915 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9916 | |
9917 | /* Ranged breakpoints have only one location. */ | |
9918 | gdb_assert (bl && bl->next == NULL); | |
9919 | ||
9920 | get_user_print_options (&opts); | |
9921 | ||
9922 | if (opts.addressprint) | |
9923 | /* We don't print the address range here, it will be printed later | |
9924 | by print_one_detail_ranged_breakpoint. */ | |
9925 | ui_out_field_skip (uiout, "addr"); | |
9926 | annotate_field (5); | |
9927 | print_breakpoint_location (b, bl); | |
9928 | *last_loc = bl; | |
9929 | } | |
9930 | ||
9931 | /* Implement the "print_one_detail" breakpoint_ops method for | |
9932 | ranged breakpoints. */ | |
9933 | ||
9934 | static void | |
9935 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
9936 | struct ui_out *uiout) | |
9937 | { | |
9938 | CORE_ADDR address_start, address_end; | |
9939 | struct bp_location *bl = b->loc; | |
f99d8bf4 PA |
9940 | struct ui_file *stb = mem_fileopen (); |
9941 | struct cleanup *cleanup = make_cleanup_ui_file_delete (stb); | |
f1310107 TJB |
9942 | |
9943 | gdb_assert (bl); | |
9944 | ||
9945 | address_start = bl->address; | |
9946 | address_end = address_start + bl->length - 1; | |
9947 | ||
9948 | ui_out_text (uiout, "\taddress range: "); | |
f99d8bf4 | 9949 | fprintf_unfiltered (stb, "[%s, %s]", |
f1310107 TJB |
9950 | print_core_address (bl->gdbarch, address_start), |
9951 | print_core_address (bl->gdbarch, address_end)); | |
9952 | ui_out_field_stream (uiout, "addr", stb); | |
9953 | ui_out_text (uiout, "\n"); | |
9954 | ||
9955 | do_cleanups (cleanup); | |
9956 | } | |
9957 | ||
9958 | /* Implement the "print_mention" breakpoint_ops method for | |
9959 | ranged breakpoints. */ | |
9960 | ||
9961 | static void | |
9962 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
9963 | { | |
9964 | struct bp_location *bl = b->loc; | |
79a45e25 | 9965 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9966 | |
9967 | gdb_assert (bl); | |
9968 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9969 | ||
9970 | if (ui_out_is_mi_like_p (uiout)) | |
9971 | return; | |
9972 | ||
9973 | printf_filtered (_("Hardware assisted ranged breakpoint %d from %s to %s."), | |
9974 | b->number, paddress (bl->gdbarch, bl->address), | |
9975 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
9976 | } | |
9977 | ||
9978 | /* Implement the "print_recreate" breakpoint_ops method for | |
9979 | ranged breakpoints. */ | |
9980 | ||
9981 | static void | |
9982 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
9983 | { | |
9984 | fprintf_unfiltered (fp, "break-range %s, %s", b->addr_string, | |
9985 | b->addr_string_range_end); | |
d9b3f62e | 9986 | print_recreate_thread (b, fp); |
f1310107 TJB |
9987 | } |
9988 | ||
9989 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
9990 | ||
2060206e | 9991 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
9992 | |
9993 | /* Find the address where the end of the breakpoint range should be | |
9994 | placed, given the SAL of the end of the range. This is so that if | |
9995 | the user provides a line number, the end of the range is set to the | |
9996 | last instruction of the given line. */ | |
9997 | ||
9998 | static CORE_ADDR | |
9999 | find_breakpoint_range_end (struct symtab_and_line sal) | |
10000 | { | |
10001 | CORE_ADDR end; | |
10002 | ||
10003 | /* If the user provided a PC value, use it. Otherwise, | |
10004 | find the address of the end of the given location. */ | |
10005 | if (sal.explicit_pc) | |
10006 | end = sal.pc; | |
10007 | else | |
10008 | { | |
10009 | int ret; | |
10010 | CORE_ADDR start; | |
10011 | ||
10012 | ret = find_line_pc_range (sal, &start, &end); | |
10013 | if (!ret) | |
10014 | error (_("Could not find location of the end of the range.")); | |
10015 | ||
10016 | /* find_line_pc_range returns the start of the next line. */ | |
10017 | end--; | |
10018 | } | |
10019 | ||
10020 | return end; | |
10021 | } | |
10022 | ||
10023 | /* Implement the "break-range" CLI command. */ | |
10024 | ||
10025 | static void | |
10026 | break_range_command (char *arg, int from_tty) | |
10027 | { | |
10028 | char *arg_start, *addr_string_start, *addr_string_end; | |
10029 | struct linespec_result canonical_start, canonical_end; | |
10030 | int bp_count, can_use_bp, length; | |
10031 | CORE_ADDR end; | |
10032 | struct breakpoint *b; | |
10033 | struct symtab_and_line sal_start, sal_end; | |
f1310107 | 10034 | struct cleanup *cleanup_bkpt; |
f8eba3c6 | 10035 | struct linespec_sals *lsal_start, *lsal_end; |
f1310107 TJB |
10036 | |
10037 | /* We don't support software ranged breakpoints. */ | |
10038 | if (target_ranged_break_num_registers () < 0) | |
10039 | error (_("This target does not support hardware ranged breakpoints.")); | |
10040 | ||
10041 | bp_count = hw_breakpoint_used_count (); | |
10042 | bp_count += target_ranged_break_num_registers (); | |
10043 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
10044 | bp_count, 0); | |
10045 | if (can_use_bp < 0) | |
10046 | error (_("Hardware breakpoints used exceeds limit.")); | |
10047 | ||
f8eba3c6 | 10048 | arg = skip_spaces (arg); |
f1310107 TJB |
10049 | if (arg == NULL || arg[0] == '\0') |
10050 | error(_("No address range specified.")); | |
10051 | ||
f1310107 TJB |
10052 | init_linespec_result (&canonical_start); |
10053 | ||
f8eba3c6 TT |
10054 | arg_start = arg; |
10055 | parse_breakpoint_sals (&arg, &canonical_start); | |
f1310107 | 10056 | |
f8eba3c6 | 10057 | cleanup_bkpt = make_cleanup_destroy_linespec_result (&canonical_start); |
f1310107 TJB |
10058 | |
10059 | if (arg[0] != ',') | |
10060 | error (_("Too few arguments.")); | |
f8eba3c6 | 10061 | else if (VEC_empty (linespec_sals, canonical_start.sals)) |
f1310107 | 10062 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 TT |
10063 | |
10064 | lsal_start = VEC_index (linespec_sals, canonical_start.sals, 0); | |
10065 | ||
10066 | if (VEC_length (linespec_sals, canonical_start.sals) > 1 | |
10067 | || lsal_start->sals.nelts != 1) | |
f1310107 TJB |
10068 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10069 | ||
f8eba3c6 TT |
10070 | sal_start = lsal_start->sals.sals[0]; |
10071 | addr_string_start = savestring (arg_start, arg - arg_start); | |
10072 | make_cleanup (xfree, addr_string_start); | |
f1310107 TJB |
10073 | |
10074 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 10075 | arg = skip_spaces (arg); |
f1310107 TJB |
10076 | |
10077 | /* Parse the end location. */ | |
10078 | ||
f1310107 TJB |
10079 | init_linespec_result (&canonical_end); |
10080 | arg_start = arg; | |
10081 | ||
f8eba3c6 | 10082 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
10083 | parse_breakpoint_sals because we need to specify the start location's |
10084 | symtab and line as the default symtab and line for the end of the | |
10085 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
10086 | where +14 means 14 lines from the start location. */ | |
f8eba3c6 TT |
10087 | decode_line_full (&arg, DECODE_LINE_FUNFIRSTLINE, |
10088 | sal_start.symtab, sal_start.line, | |
10089 | &canonical_end, NULL, NULL); | |
10090 | ||
10091 | make_cleanup_destroy_linespec_result (&canonical_end); | |
f1310107 | 10092 | |
f8eba3c6 | 10093 | if (VEC_empty (linespec_sals, canonical_end.sals)) |
f1310107 | 10094 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 TT |
10095 | |
10096 | lsal_end = VEC_index (linespec_sals, canonical_end.sals, 0); | |
10097 | if (VEC_length (linespec_sals, canonical_end.sals) > 1 | |
10098 | || lsal_end->sals.nelts != 1) | |
f1310107 TJB |
10099 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10100 | ||
f8eba3c6 TT |
10101 | sal_end = lsal_end->sals.sals[0]; |
10102 | addr_string_end = savestring (arg_start, arg - arg_start); | |
10103 | make_cleanup (xfree, addr_string_end); | |
f1310107 TJB |
10104 | |
10105 | end = find_breakpoint_range_end (sal_end); | |
10106 | if (sal_start.pc > end) | |
177b42fe | 10107 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
10108 | |
10109 | length = end - sal_start.pc + 1; | |
10110 | if (length < 0) | |
10111 | /* Length overflowed. */ | |
10112 | error (_("Address range too large.")); | |
10113 | else if (length == 1) | |
10114 | { | |
10115 | /* This range is simple enough to be handled by | |
10116 | the `hbreak' command. */ | |
10117 | hbreak_command (addr_string_start, 1); | |
10118 | ||
10119 | do_cleanups (cleanup_bkpt); | |
10120 | ||
10121 | return; | |
10122 | } | |
10123 | ||
10124 | /* Now set up the breakpoint. */ | |
10125 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 10126 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
10127 | set_breakpoint_count (breakpoint_count + 1); |
10128 | b->number = breakpoint_count; | |
10129 | b->disposition = disp_donttouch; | |
f8eba3c6 TT |
10130 | b->addr_string = xstrdup (addr_string_start); |
10131 | b->addr_string_range_end = xstrdup (addr_string_end); | |
f1310107 TJB |
10132 | b->loc->length = length; |
10133 | ||
f8eba3c6 | 10134 | do_cleanups (cleanup_bkpt); |
f1310107 TJB |
10135 | |
10136 | mention (b); | |
8d3788bd | 10137 | observer_notify_breakpoint_created (b); |
f1310107 TJB |
10138 | update_global_location_list (1); |
10139 | } | |
10140 | ||
4a64f543 MS |
10141 | /* Return non-zero if EXP is verified as constant. Returned zero |
10142 | means EXP is variable. Also the constant detection may fail for | |
10143 | some constant expressions and in such case still falsely return | |
10144 | zero. */ | |
2e6e3d9c | 10145 | |
65d79d4b SDJ |
10146 | static int |
10147 | watchpoint_exp_is_const (const struct expression *exp) | |
10148 | { | |
10149 | int i = exp->nelts; | |
10150 | ||
10151 | while (i > 0) | |
10152 | { | |
10153 | int oplenp, argsp; | |
10154 | ||
10155 | /* We are only interested in the descriptor of each element. */ | |
10156 | operator_length (exp, i, &oplenp, &argsp); | |
10157 | i -= oplenp; | |
10158 | ||
10159 | switch (exp->elts[i].opcode) | |
10160 | { | |
10161 | case BINOP_ADD: | |
10162 | case BINOP_SUB: | |
10163 | case BINOP_MUL: | |
10164 | case BINOP_DIV: | |
10165 | case BINOP_REM: | |
10166 | case BINOP_MOD: | |
10167 | case BINOP_LSH: | |
10168 | case BINOP_RSH: | |
10169 | case BINOP_LOGICAL_AND: | |
10170 | case BINOP_LOGICAL_OR: | |
10171 | case BINOP_BITWISE_AND: | |
10172 | case BINOP_BITWISE_IOR: | |
10173 | case BINOP_BITWISE_XOR: | |
10174 | case BINOP_EQUAL: | |
10175 | case BINOP_NOTEQUAL: | |
10176 | case BINOP_LESS: | |
10177 | case BINOP_GTR: | |
10178 | case BINOP_LEQ: | |
10179 | case BINOP_GEQ: | |
10180 | case BINOP_REPEAT: | |
10181 | case BINOP_COMMA: | |
10182 | case BINOP_EXP: | |
10183 | case BINOP_MIN: | |
10184 | case BINOP_MAX: | |
10185 | case BINOP_INTDIV: | |
10186 | case BINOP_CONCAT: | |
10187 | case BINOP_IN: | |
10188 | case BINOP_RANGE: | |
10189 | case TERNOP_COND: | |
10190 | case TERNOP_SLICE: | |
65d79d4b SDJ |
10191 | |
10192 | case OP_LONG: | |
10193 | case OP_DOUBLE: | |
10194 | case OP_DECFLOAT: | |
10195 | case OP_LAST: | |
10196 | case OP_COMPLEX: | |
10197 | case OP_STRING: | |
65d79d4b SDJ |
10198 | case OP_ARRAY: |
10199 | case OP_TYPE: | |
608b4967 TT |
10200 | case OP_TYPEOF: |
10201 | case OP_DECLTYPE: | |
65d79d4b SDJ |
10202 | case OP_NAME: |
10203 | case OP_OBJC_NSSTRING: | |
10204 | ||
10205 | case UNOP_NEG: | |
10206 | case UNOP_LOGICAL_NOT: | |
10207 | case UNOP_COMPLEMENT: | |
10208 | case UNOP_ADDR: | |
10209 | case UNOP_HIGH: | |
aeaa2474 | 10210 | case UNOP_CAST: |
9eaf6705 TT |
10211 | |
10212 | case UNOP_CAST_TYPE: | |
10213 | case UNOP_REINTERPRET_CAST: | |
10214 | case UNOP_DYNAMIC_CAST: | |
4a64f543 MS |
10215 | /* Unary, binary and ternary operators: We have to check |
10216 | their operands. If they are constant, then so is the | |
10217 | result of that operation. For instance, if A and B are | |
10218 | determined to be constants, then so is "A + B". | |
10219 | ||
10220 | UNOP_IND is one exception to the rule above, because the | |
10221 | value of *ADDR is not necessarily a constant, even when | |
10222 | ADDR is. */ | |
65d79d4b SDJ |
10223 | break; |
10224 | ||
10225 | case OP_VAR_VALUE: | |
10226 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 10227 | |
65d79d4b | 10228 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
10229 | possible that a buggy compiler could mark a variable as |
10230 | constant even when it is not, and TYPE_CONST would return | |
10231 | true in this case, while SYMBOL_CLASS wouldn't. | |
10232 | ||
10233 | We also have to check for function symbols because they | |
10234 | are always constant. */ | |
65d79d4b SDJ |
10235 | { |
10236 | struct symbol *s = exp->elts[i + 2].symbol; | |
10237 | ||
10238 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
10239 | && SYMBOL_CLASS (s) != LOC_CONST | |
10240 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
10241 | return 0; | |
10242 | break; | |
10243 | } | |
10244 | ||
10245 | /* The default action is to return 0 because we are using | |
10246 | the optimistic approach here: If we don't know something, | |
10247 | then it is not a constant. */ | |
10248 | default: | |
10249 | return 0; | |
10250 | } | |
10251 | } | |
10252 | ||
10253 | return 1; | |
10254 | } | |
10255 | ||
3a5c3e22 PA |
10256 | /* Implement the "dtor" breakpoint_ops method for watchpoints. */ |
10257 | ||
10258 | static void | |
10259 | dtor_watchpoint (struct breakpoint *self) | |
10260 | { | |
10261 | struct watchpoint *w = (struct watchpoint *) self; | |
10262 | ||
10263 | xfree (w->cond_exp); | |
10264 | xfree (w->exp); | |
10265 | xfree (w->exp_string); | |
10266 | xfree (w->exp_string_reparse); | |
10267 | value_free (w->val); | |
10268 | ||
10269 | base_breakpoint_ops.dtor (self); | |
10270 | } | |
10271 | ||
348d480f PA |
10272 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
10273 | ||
10274 | static void | |
10275 | re_set_watchpoint (struct breakpoint *b) | |
10276 | { | |
3a5c3e22 PA |
10277 | struct watchpoint *w = (struct watchpoint *) b; |
10278 | ||
348d480f PA |
10279 | /* Watchpoint can be either on expression using entirely global |
10280 | variables, or it can be on local variables. | |
10281 | ||
10282 | Watchpoints of the first kind are never auto-deleted, and even | |
10283 | persist across program restarts. Since they can use variables | |
10284 | from shared libraries, we need to reparse expression as libraries | |
10285 | are loaded and unloaded. | |
10286 | ||
10287 | Watchpoints on local variables can also change meaning as result | |
10288 | of solib event. For example, if a watchpoint uses both a local | |
10289 | and a global variables in expression, it's a local watchpoint, | |
10290 | but unloading of a shared library will make the expression | |
10291 | invalid. This is not a very common use case, but we still | |
10292 | re-evaluate expression, to avoid surprises to the user. | |
10293 | ||
10294 | Note that for local watchpoints, we re-evaluate it only if | |
10295 | watchpoints frame id is still valid. If it's not, it means the | |
10296 | watchpoint is out of scope and will be deleted soon. In fact, | |
10297 | I'm not sure we'll ever be called in this case. | |
10298 | ||
10299 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10300 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10301 | |
3a5c3e22 PA |
10302 | Don't do anything about disabled watchpoints, since they will be |
10303 | reevaluated again when enabled. */ | |
10304 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10305 | } |
10306 | ||
77b06cd7 TJB |
10307 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10308 | ||
10309 | static int | |
10310 | insert_watchpoint (struct bp_location *bl) | |
10311 | { | |
3a5c3e22 PA |
10312 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10313 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10314 | |
10315 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 10316 | w->cond_exp); |
77b06cd7 TJB |
10317 | } |
10318 | ||
10319 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10320 | ||
10321 | static int | |
10322 | remove_watchpoint (struct bp_location *bl) | |
10323 | { | |
3a5c3e22 PA |
10324 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10325 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10326 | |
10327 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 10328 | w->cond_exp); |
e09342b5 TJB |
10329 | } |
10330 | ||
e09342b5 | 10331 | static int |
348d480f | 10332 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
09ac7c10 TT |
10333 | struct address_space *aspace, CORE_ADDR bp_addr, |
10334 | const struct target_waitstatus *ws) | |
e09342b5 | 10335 | { |
348d480f | 10336 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10337 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10338 | |
348d480f PA |
10339 | /* Continuable hardware watchpoints are treated as non-existent if the |
10340 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10341 | some data address). Otherwise gdb won't stop on a break instruction | |
10342 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10343 | been defined. Also skip watchpoints which we know did not trigger | |
10344 | (did not match the data address). */ | |
10345 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10346 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10347 | return 0; |
9c06b0b4 | 10348 | |
348d480f | 10349 | return 1; |
9c06b0b4 TJB |
10350 | } |
10351 | ||
348d480f PA |
10352 | static void |
10353 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10354 | { |
348d480f | 10355 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10356 | |
348d480f | 10357 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10358 | } |
10359 | ||
10360 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10361 | hardware watchpoints. */ |
9c06b0b4 TJB |
10362 | |
10363 | static int | |
348d480f | 10364 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10365 | { |
3a5c3e22 PA |
10366 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10367 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10368 | |
10369 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10370 | } |
10371 | ||
10372 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10373 | hardware watchpoints. */ |
9c06b0b4 TJB |
10374 | |
10375 | static int | |
348d480f | 10376 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10377 | { |
efa80663 PA |
10378 | /* Read and access watchpoints only work with hardware support. */ |
10379 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10380 | } |
10381 | ||
9c06b0b4 | 10382 | static enum print_stop_action |
348d480f | 10383 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10384 | { |
348d480f PA |
10385 | struct cleanup *old_chain; |
10386 | struct breakpoint *b; | |
10387 | const struct bp_location *bl; | |
f99d8bf4 | 10388 | struct ui_file *stb; |
348d480f | 10389 | enum print_stop_action result; |
3a5c3e22 | 10390 | struct watchpoint *w; |
79a45e25 | 10391 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10392 | |
10393 | gdb_assert (bs->bp_location_at != NULL); | |
10394 | ||
10395 | bl = bs->bp_location_at; | |
10396 | b = bs->breakpoint_at; | |
3a5c3e22 | 10397 | w = (struct watchpoint *) b; |
348d480f | 10398 | |
f99d8bf4 PA |
10399 | stb = mem_fileopen (); |
10400 | old_chain = make_cleanup_ui_file_delete (stb); | |
9c06b0b4 TJB |
10401 | |
10402 | switch (b->type) | |
10403 | { | |
348d480f | 10404 | case bp_watchpoint: |
9c06b0b4 TJB |
10405 | case bp_hardware_watchpoint: |
10406 | annotate_watchpoint (b->number); | |
10407 | if (ui_out_is_mi_like_p (uiout)) | |
10408 | ui_out_field_string | |
10409 | (uiout, "reason", | |
10410 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10411 | mention (b); |
10412 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10413 | ui_out_text (uiout, "\nOld value = "); | |
f99d8bf4 | 10414 | watchpoint_value_print (bs->old_val, stb); |
348d480f PA |
10415 | ui_out_field_stream (uiout, "old", stb); |
10416 | ui_out_text (uiout, "\nNew value = "); | |
f99d8bf4 | 10417 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10418 | ui_out_field_stream (uiout, "new", stb); |
10419 | ui_out_text (uiout, "\n"); | |
10420 | /* More than one watchpoint may have been triggered. */ | |
10421 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10422 | break; |
10423 | ||
10424 | case bp_read_watchpoint: | |
10425 | if (ui_out_is_mi_like_p (uiout)) | |
10426 | ui_out_field_string | |
10427 | (uiout, "reason", | |
10428 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10429 | mention (b); |
10430 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10431 | ui_out_text (uiout, "\nValue = "); | |
f99d8bf4 | 10432 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10433 | ui_out_field_stream (uiout, "value", stb); |
10434 | ui_out_text (uiout, "\n"); | |
10435 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10436 | break; |
10437 | ||
10438 | case bp_access_watchpoint: | |
348d480f PA |
10439 | if (bs->old_val != NULL) |
10440 | { | |
10441 | annotate_watchpoint (b->number); | |
10442 | if (ui_out_is_mi_like_p (uiout)) | |
10443 | ui_out_field_string | |
10444 | (uiout, "reason", | |
10445 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10446 | mention (b); | |
10447 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10448 | ui_out_text (uiout, "\nOld value = "); | |
f99d8bf4 | 10449 | watchpoint_value_print (bs->old_val, stb); |
348d480f PA |
10450 | ui_out_field_stream (uiout, "old", stb); |
10451 | ui_out_text (uiout, "\nNew value = "); | |
10452 | } | |
10453 | else | |
10454 | { | |
10455 | mention (b); | |
10456 | if (ui_out_is_mi_like_p (uiout)) | |
10457 | ui_out_field_string | |
10458 | (uiout, "reason", | |
10459 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10460 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10461 | ui_out_text (uiout, "\nValue = "); | |
10462 | } | |
f99d8bf4 | 10463 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10464 | ui_out_field_stream (uiout, "new", stb); |
10465 | ui_out_text (uiout, "\n"); | |
10466 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10467 | break; |
10468 | default: | |
348d480f | 10469 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10470 | } |
10471 | ||
348d480f PA |
10472 | do_cleanups (old_chain); |
10473 | return result; | |
10474 | } | |
10475 | ||
10476 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10477 | watchpoints. */ | |
10478 | ||
10479 | static void | |
10480 | print_mention_watchpoint (struct breakpoint *b) | |
10481 | { | |
10482 | struct cleanup *ui_out_chain; | |
3a5c3e22 | 10483 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10484 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10485 | |
10486 | switch (b->type) | |
10487 | { | |
10488 | case bp_watchpoint: | |
10489 | ui_out_text (uiout, "Watchpoint "); | |
10490 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10491 | break; | |
10492 | case bp_hardware_watchpoint: | |
10493 | ui_out_text (uiout, "Hardware watchpoint "); | |
10494 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10495 | break; | |
10496 | case bp_read_watchpoint: | |
10497 | ui_out_text (uiout, "Hardware read watchpoint "); | |
10498 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
10499 | break; | |
10500 | case bp_access_watchpoint: | |
10501 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
10502 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
10503 | break; | |
10504 | default: | |
10505 | internal_error (__FILE__, __LINE__, | |
10506 | _("Invalid hardware watchpoint type.")); | |
10507 | } | |
10508 | ||
10509 | ui_out_field_int (uiout, "number", b->number); | |
10510 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 10511 | ui_out_field_string (uiout, "exp", w->exp_string); |
348d480f PA |
10512 | do_cleanups (ui_out_chain); |
10513 | } | |
10514 | ||
10515 | /* Implement the "print_recreate" breakpoint_ops method for | |
10516 | watchpoints. */ | |
10517 | ||
10518 | static void | |
10519 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10520 | { | |
3a5c3e22 PA |
10521 | struct watchpoint *w = (struct watchpoint *) b; |
10522 | ||
348d480f PA |
10523 | switch (b->type) |
10524 | { | |
10525 | case bp_watchpoint: | |
10526 | case bp_hardware_watchpoint: | |
10527 | fprintf_unfiltered (fp, "watch"); | |
10528 | break; | |
10529 | case bp_read_watchpoint: | |
10530 | fprintf_unfiltered (fp, "rwatch"); | |
10531 | break; | |
10532 | case bp_access_watchpoint: | |
10533 | fprintf_unfiltered (fp, "awatch"); | |
10534 | break; | |
10535 | default: | |
10536 | internal_error (__FILE__, __LINE__, | |
10537 | _("Invalid watchpoint type.")); | |
10538 | } | |
10539 | ||
3a5c3e22 | 10540 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10541 | print_recreate_thread (b, fp); |
348d480f PA |
10542 | } |
10543 | ||
10544 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ | |
10545 | ||
2060206e | 10546 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10547 | |
10548 | /* Implement the "insert" breakpoint_ops method for | |
10549 | masked hardware watchpoints. */ | |
10550 | ||
10551 | static int | |
10552 | insert_masked_watchpoint (struct bp_location *bl) | |
10553 | { | |
3a5c3e22 PA |
10554 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10555 | ||
10556 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10557 | bl->watchpoint_type); |
10558 | } | |
10559 | ||
10560 | /* Implement the "remove" breakpoint_ops method for | |
10561 | masked hardware watchpoints. */ | |
10562 | ||
10563 | static int | |
10564 | remove_masked_watchpoint (struct bp_location *bl) | |
10565 | { | |
3a5c3e22 PA |
10566 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10567 | ||
10568 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10569 | bl->watchpoint_type); |
10570 | } | |
10571 | ||
10572 | /* Implement the "resources_needed" breakpoint_ops method for | |
10573 | masked hardware watchpoints. */ | |
10574 | ||
10575 | static int | |
10576 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10577 | { | |
3a5c3e22 PA |
10578 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10579 | ||
10580 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10581 | } |
10582 | ||
10583 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10584 | masked hardware watchpoints. */ | |
10585 | ||
10586 | static int | |
10587 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10588 | { | |
10589 | return 0; | |
10590 | } | |
10591 | ||
10592 | /* Implement the "print_it" breakpoint_ops method for | |
10593 | masked hardware watchpoints. */ | |
10594 | ||
10595 | static enum print_stop_action | |
10596 | print_it_masked_watchpoint (bpstat bs) | |
10597 | { | |
10598 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10599 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10600 | |
10601 | /* Masked watchpoints have only one location. */ | |
10602 | gdb_assert (b->loc && b->loc->next == NULL); | |
10603 | ||
10604 | switch (b->type) | |
10605 | { | |
10606 | case bp_hardware_watchpoint: | |
10607 | annotate_watchpoint (b->number); | |
10608 | if (ui_out_is_mi_like_p (uiout)) | |
10609 | ui_out_field_string | |
10610 | (uiout, "reason", | |
10611 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
10612 | break; | |
10613 | ||
10614 | case bp_read_watchpoint: | |
10615 | if (ui_out_is_mi_like_p (uiout)) | |
10616 | ui_out_field_string | |
10617 | (uiout, "reason", | |
10618 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
10619 | break; | |
10620 | ||
10621 | case bp_access_watchpoint: | |
10622 | if (ui_out_is_mi_like_p (uiout)) | |
10623 | ui_out_field_string | |
10624 | (uiout, "reason", | |
10625 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10626 | break; | |
10627 | default: | |
10628 | internal_error (__FILE__, __LINE__, | |
10629 | _("Invalid hardware watchpoint type.")); | |
10630 | } | |
10631 | ||
10632 | mention (b); | |
9c06b0b4 TJB |
10633 | ui_out_text (uiout, _("\n\ |
10634 | Check the underlying instruction at PC for the memory\n\ | |
10635 | address and value which triggered this watchpoint.\n")); | |
10636 | ui_out_text (uiout, "\n"); | |
10637 | ||
10638 | /* More than one watchpoint may have been triggered. */ | |
10639 | return PRINT_UNKNOWN; | |
10640 | } | |
10641 | ||
10642 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10643 | masked hardware watchpoints. */ | |
10644 | ||
10645 | static void | |
10646 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10647 | struct ui_out *uiout) | |
10648 | { | |
3a5c3e22 PA |
10649 | struct watchpoint *w = (struct watchpoint *) b; |
10650 | ||
9c06b0b4 TJB |
10651 | /* Masked watchpoints have only one location. */ |
10652 | gdb_assert (b->loc && b->loc->next == NULL); | |
10653 | ||
10654 | ui_out_text (uiout, "\tmask "); | |
3a5c3e22 | 10655 | ui_out_field_core_addr (uiout, "mask", b->loc->gdbarch, w->hw_wp_mask); |
9c06b0b4 TJB |
10656 | ui_out_text (uiout, "\n"); |
10657 | } | |
10658 | ||
10659 | /* Implement the "print_mention" breakpoint_ops method for | |
10660 | masked hardware watchpoints. */ | |
10661 | ||
10662 | static void | |
10663 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10664 | { | |
3a5c3e22 | 10665 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10666 | struct ui_out *uiout = current_uiout; |
9c06b0b4 TJB |
10667 | struct cleanup *ui_out_chain; |
10668 | ||
10669 | switch (b->type) | |
10670 | { | |
10671 | case bp_hardware_watchpoint: | |
10672 | ui_out_text (uiout, "Masked hardware watchpoint "); | |
10673 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10674 | break; | |
10675 | case bp_read_watchpoint: | |
10676 | ui_out_text (uiout, "Masked hardware read watchpoint "); | |
10677 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
10678 | break; | |
10679 | case bp_access_watchpoint: | |
10680 | ui_out_text (uiout, "Masked hardware access (read/write) watchpoint "); | |
10681 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
10682 | break; | |
10683 | default: | |
10684 | internal_error (__FILE__, __LINE__, | |
10685 | _("Invalid hardware watchpoint type.")); | |
10686 | } | |
10687 | ||
10688 | ui_out_field_int (uiout, "number", b->number); | |
10689 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 10690 | ui_out_field_string (uiout, "exp", w->exp_string); |
9c06b0b4 TJB |
10691 | do_cleanups (ui_out_chain); |
10692 | } | |
10693 | ||
10694 | /* Implement the "print_recreate" breakpoint_ops method for | |
10695 | masked hardware watchpoints. */ | |
10696 | ||
10697 | static void | |
10698 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10699 | { | |
3a5c3e22 | 10700 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10701 | char tmp[40]; |
10702 | ||
10703 | switch (b->type) | |
10704 | { | |
10705 | case bp_hardware_watchpoint: | |
10706 | fprintf_unfiltered (fp, "watch"); | |
10707 | break; | |
10708 | case bp_read_watchpoint: | |
10709 | fprintf_unfiltered (fp, "rwatch"); | |
10710 | break; | |
10711 | case bp_access_watchpoint: | |
10712 | fprintf_unfiltered (fp, "awatch"); | |
10713 | break; | |
10714 | default: | |
10715 | internal_error (__FILE__, __LINE__, | |
10716 | _("Invalid hardware watchpoint type.")); | |
10717 | } | |
10718 | ||
3a5c3e22 PA |
10719 | sprintf_vma (tmp, w->hw_wp_mask); |
10720 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 10721 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10722 | } |
10723 | ||
10724 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10725 | ||
2060206e | 10726 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10727 | |
10728 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10729 | ||
10730 | static int | |
10731 | is_masked_watchpoint (const struct breakpoint *b) | |
10732 | { | |
10733 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10734 | } | |
10735 | ||
53a5351d JM |
10736 | /* accessflag: hw_write: watch write, |
10737 | hw_read: watch read, | |
10738 | hw_access: watch access (read or write) */ | |
c906108c | 10739 | static void |
84f4c1fe PM |
10740 | watch_command_1 (char *arg, int accessflag, int from_tty, |
10741 | int just_location, int internal) | |
c906108c | 10742 | { |
a9634178 | 10743 | volatile struct gdb_exception e; |
d983da9c | 10744 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c | 10745 | struct expression *exp; |
60e1c644 | 10746 | struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
a1442452 | 10747 | struct value *val, *mark, *result; |
c906108c | 10748 | struct frame_info *frame; |
c906108c SS |
10749 | char *exp_start = NULL; |
10750 | char *exp_end = NULL; | |
9c06b0b4 TJB |
10751 | char *tok, *end_tok; |
10752 | int toklen = -1; | |
c906108c SS |
10753 | char *cond_start = NULL; |
10754 | char *cond_end = NULL; | |
c906108c | 10755 | enum bptype bp_type; |
37e4754d | 10756 | int thread = -1; |
0cf6dd15 | 10757 | int pc = 0; |
9c06b0b4 TJB |
10758 | /* Flag to indicate whether we are going to use masks for |
10759 | the hardware watchpoint. */ | |
10760 | int use_mask = 0; | |
10761 | CORE_ADDR mask = 0; | |
3a5c3e22 | 10762 | struct watchpoint *w; |
c906108c | 10763 | |
37e4754d LM |
10764 | /* Make sure that we actually have parameters to parse. */ |
10765 | if (arg != NULL && arg[0] != '\0') | |
10766 | { | |
9c06b0b4 | 10767 | char *value_start; |
37e4754d | 10768 | |
9c06b0b4 TJB |
10769 | /* Look for "parameter value" pairs at the end |
10770 | of the arguments string. */ | |
10771 | for (tok = arg + strlen (arg) - 1; tok > arg; tok--) | |
10772 | { | |
10773 | /* Skip whitespace at the end of the argument list. */ | |
10774 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10775 | tok--; | |
10776 | ||
10777 | /* Find the beginning of the last token. | |
10778 | This is the value of the parameter. */ | |
10779 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10780 | tok--; | |
10781 | value_start = tok + 1; | |
10782 | ||
10783 | /* Skip whitespace. */ | |
10784 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10785 | tok--; | |
10786 | ||
10787 | end_tok = tok; | |
10788 | ||
10789 | /* Find the beginning of the second to last token. | |
10790 | This is the parameter itself. */ | |
10791 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10792 | tok--; | |
10793 | tok++; | |
10794 | toklen = end_tok - tok + 1; | |
10795 | ||
10796 | if (toklen == 6 && !strncmp (tok, "thread", 6)) | |
10797 | { | |
10798 | /* At this point we've found a "thread" token, which means | |
10799 | the user is trying to set a watchpoint that triggers | |
10800 | only in a specific thread. */ | |
10801 | char *endp; | |
37e4754d | 10802 | |
9c06b0b4 TJB |
10803 | if (thread != -1) |
10804 | error(_("You can specify only one thread.")); | |
37e4754d | 10805 | |
9c06b0b4 TJB |
10806 | /* Extract the thread ID from the next token. */ |
10807 | thread = strtol (value_start, &endp, 0); | |
37e4754d | 10808 | |
9c06b0b4 TJB |
10809 | /* Check if the user provided a valid numeric value for the |
10810 | thread ID. */ | |
10811 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
10812 | error (_("Invalid thread ID specification %s."), value_start); | |
10813 | ||
10814 | /* Check if the thread actually exists. */ | |
10815 | if (!valid_thread_id (thread)) | |
af4908ba | 10816 | invalid_thread_id_error (thread); |
9c06b0b4 TJB |
10817 | } |
10818 | else if (toklen == 4 && !strncmp (tok, "mask", 4)) | |
10819 | { | |
10820 | /* We've found a "mask" token, which means the user wants to | |
10821 | create a hardware watchpoint that is going to have the mask | |
10822 | facility. */ | |
10823 | struct value *mask_value, *mark; | |
37e4754d | 10824 | |
9c06b0b4 TJB |
10825 | if (use_mask) |
10826 | error(_("You can specify only one mask.")); | |
37e4754d | 10827 | |
9c06b0b4 | 10828 | use_mask = just_location = 1; |
37e4754d | 10829 | |
9c06b0b4 TJB |
10830 | mark = value_mark (); |
10831 | mask_value = parse_to_comma_and_eval (&value_start); | |
10832 | mask = value_as_address (mask_value); | |
10833 | value_free_to_mark (mark); | |
10834 | } | |
10835 | else | |
10836 | /* We didn't recognize what we found. We should stop here. */ | |
10837 | break; | |
37e4754d | 10838 | |
9c06b0b4 TJB |
10839 | /* Truncate the string and get rid of the "parameter value" pair before |
10840 | the arguments string is parsed by the parse_exp_1 function. */ | |
10841 | *tok = '\0'; | |
10842 | } | |
37e4754d LM |
10843 | } |
10844 | ||
10845 | /* Parse the rest of the arguments. */ | |
c906108c SS |
10846 | innermost_block = NULL; |
10847 | exp_start = arg; | |
1bb9788d | 10848 | exp = parse_exp_1 (&arg, 0, 0, 0); |
c906108c | 10849 | exp_end = arg; |
fa8a61dc TT |
10850 | /* Remove trailing whitespace from the expression before saving it. |
10851 | This makes the eventual display of the expression string a bit | |
10852 | prettier. */ | |
10853 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10854 | --exp_end; | |
10855 | ||
65d79d4b SDJ |
10856 | /* Checking if the expression is not constant. */ |
10857 | if (watchpoint_exp_is_const (exp)) | |
10858 | { | |
10859 | int len; | |
10860 | ||
10861 | len = exp_end - exp_start; | |
10862 | while (len > 0 && isspace (exp_start[len - 1])) | |
10863 | len--; | |
10864 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10865 | } | |
10866 | ||
c906108c SS |
10867 | exp_valid_block = innermost_block; |
10868 | mark = value_mark (); | |
a1442452 | 10869 | fetch_subexp_value (exp, &pc, &val, &result, NULL); |
06a64a0b TT |
10870 | |
10871 | if (just_location) | |
10872 | { | |
9c06b0b4 TJB |
10873 | int ret; |
10874 | ||
06a64a0b | 10875 | exp_valid_block = NULL; |
a1442452 | 10876 | val = value_addr (result); |
06a64a0b TT |
10877 | release_value (val); |
10878 | value_free_to_mark (mark); | |
9c06b0b4 TJB |
10879 | |
10880 | if (use_mask) | |
10881 | { | |
10882 | ret = target_masked_watch_num_registers (value_as_address (val), | |
10883 | mask); | |
10884 | if (ret == -1) | |
10885 | error (_("This target does not support masked watchpoints.")); | |
10886 | else if (ret == -2) | |
10887 | error (_("Invalid mask or memory region.")); | |
10888 | } | |
06a64a0b TT |
10889 | } |
10890 | else if (val != NULL) | |
fa4727a6 | 10891 | release_value (val); |
c906108c | 10892 | |
e9cafbcc TT |
10893 | tok = skip_spaces (arg); |
10894 | end_tok = skip_to_space (tok); | |
c906108c SS |
10895 | |
10896 | toklen = end_tok - tok; | |
10897 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10898 | { | |
2d134ed3 PA |
10899 | struct expression *cond; |
10900 | ||
60e1c644 | 10901 | innermost_block = NULL; |
c906108c | 10902 | tok = cond_start = end_tok + 1; |
1bb9788d | 10903 | cond = parse_exp_1 (&tok, 0, 0, 0); |
60e1c644 PA |
10904 | |
10905 | /* The watchpoint expression may not be local, but the condition | |
10906 | may still be. E.g.: `watch global if local > 0'. */ | |
10907 | cond_exp_valid_block = innermost_block; | |
10908 | ||
2d134ed3 | 10909 | xfree (cond); |
c906108c SS |
10910 | cond_end = tok; |
10911 | } | |
10912 | if (*tok) | |
8a3fe4f8 | 10913 | error (_("Junk at end of command.")); |
c906108c | 10914 | |
53a5351d | 10915 | if (accessflag == hw_read) |
c5aa993b | 10916 | bp_type = bp_read_watchpoint; |
53a5351d | 10917 | else if (accessflag == hw_access) |
c5aa993b JM |
10918 | bp_type = bp_access_watchpoint; |
10919 | else | |
10920 | bp_type = bp_hardware_watchpoint; | |
c906108c | 10921 | |
d983da9c | 10922 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
10923 | |
10924 | /* If the expression is "local", then set up a "watchpoint scope" | |
10925 | breakpoint at the point where we've left the scope of the watchpoint | |
10926 | expression. Create the scope breakpoint before the watchpoint, so | |
10927 | that we will encounter it first in bpstat_stop_status. */ | |
60e1c644 | 10928 | if (exp_valid_block && frame) |
d983da9c | 10929 | { |
edb3359d DJ |
10930 | if (frame_id_p (frame_unwind_caller_id (frame))) |
10931 | { | |
10932 | scope_breakpoint | |
a6d9a66e UW |
10933 | = create_internal_breakpoint (frame_unwind_caller_arch (frame), |
10934 | frame_unwind_caller_pc (frame), | |
06edf0c0 PA |
10935 | bp_watchpoint_scope, |
10936 | &momentary_breakpoint_ops); | |
d983da9c | 10937 | |
edb3359d | 10938 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10939 | |
edb3359d DJ |
10940 | /* Automatically delete the breakpoint when it hits. */ |
10941 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10942 | |
edb3359d DJ |
10943 | /* Only break in the proper frame (help with recursion). */ |
10944 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 10945 | |
edb3359d | 10946 | /* Set the address at which we will stop. */ |
a6d9a66e UW |
10947 | scope_breakpoint->loc->gdbarch |
10948 | = frame_unwind_caller_arch (frame); | |
edb3359d DJ |
10949 | scope_breakpoint->loc->requested_address |
10950 | = frame_unwind_caller_pc (frame); | |
10951 | scope_breakpoint->loc->address | |
a6d9a66e UW |
10952 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10953 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
10954 | scope_breakpoint->type); |
10955 | } | |
d983da9c DJ |
10956 | } |
10957 | ||
c906108c | 10958 | /* Now set up the breakpoint. */ |
3a5c3e22 PA |
10959 | |
10960 | w = XCNEW (struct watchpoint); | |
10961 | b = &w->base; | |
348d480f | 10962 | if (use_mask) |
3a5c3e22 PA |
10963 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
10964 | &masked_watchpoint_breakpoint_ops); | |
348d480f | 10965 | else |
3a5c3e22 PA |
10966 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
10967 | &watchpoint_breakpoint_ops); | |
37e4754d | 10968 | b->thread = thread; |
b5de0fa7 | 10969 | b->disposition = disp_donttouch; |
348d480f | 10970 | b->pspace = current_program_space; |
3a5c3e22 PA |
10971 | w->exp = exp; |
10972 | w->exp_valid_block = exp_valid_block; | |
10973 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10974 | if (just_location) |
10975 | { | |
10976 | struct type *t = value_type (val); | |
10977 | CORE_ADDR addr = value_as_address (val); | |
10978 | char *name; | |
10979 | ||
10980 | t = check_typedef (TYPE_TARGET_TYPE (check_typedef (t))); | |
10981 | name = type_to_string (t); | |
10982 | ||
3a5c3e22 | 10983 | w->exp_string_reparse = xstrprintf ("* (%s *) %s", name, |
d63d0675 | 10984 | core_addr_to_string (addr)); |
06a64a0b TT |
10985 | xfree (name); |
10986 | ||
3a5c3e22 | 10987 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 JK |
10988 | (int) (exp_end - exp_start), exp_start); |
10989 | ||
06a64a0b TT |
10990 | /* The above expression is in C. */ |
10991 | b->language = language_c; | |
10992 | } | |
10993 | else | |
3a5c3e22 | 10994 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
10995 | |
10996 | if (use_mask) | |
10997 | { | |
3a5c3e22 | 10998 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
10999 | } |
11000 | else | |
11001 | { | |
3a5c3e22 PA |
11002 | w->val = val; |
11003 | w->val_valid = 1; | |
9c06b0b4 | 11004 | } |
77b06cd7 | 11005 | |
c906108c SS |
11006 | if (cond_start) |
11007 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
11008 | else | |
11009 | b->cond_string = 0; | |
c5aa993b | 11010 | |
c906108c | 11011 | if (frame) |
f6bc2008 | 11012 | { |
3a5c3e22 PA |
11013 | w->watchpoint_frame = get_frame_id (frame); |
11014 | w->watchpoint_thread = inferior_ptid; | |
f6bc2008 | 11015 | } |
c906108c | 11016 | else |
f6bc2008 | 11017 | { |
3a5c3e22 PA |
11018 | w->watchpoint_frame = null_frame_id; |
11019 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 11020 | } |
c906108c | 11021 | |
d983da9c | 11022 | if (scope_breakpoint != NULL) |
c906108c | 11023 | { |
d983da9c DJ |
11024 | /* The scope breakpoint is related to the watchpoint. We will |
11025 | need to act on them together. */ | |
11026 | b->related_breakpoint = scope_breakpoint; | |
11027 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 11028 | } |
d983da9c | 11029 | |
06a64a0b TT |
11030 | if (!just_location) |
11031 | value_free_to_mark (mark); | |
2d134ed3 | 11032 | |
a9634178 TJB |
11033 | TRY_CATCH (e, RETURN_MASK_ALL) |
11034 | { | |
11035 | /* Finally update the new watchpoint. This creates the locations | |
11036 | that should be inserted. */ | |
3a5c3e22 | 11037 | update_watchpoint (w, 1); |
a9634178 TJB |
11038 | } |
11039 | if (e.reason < 0) | |
11040 | { | |
11041 | delete_breakpoint (b); | |
11042 | throw_exception (e); | |
11043 | } | |
11044 | ||
3ea46bff | 11045 | install_breakpoint (internal, b, 1); |
c906108c SS |
11046 | } |
11047 | ||
e09342b5 | 11048 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 11049 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 11050 | |
c906108c | 11051 | static int |
a9634178 | 11052 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
11053 | { |
11054 | int found_memory_cnt = 0; | |
2e70b7b9 | 11055 | struct value *head = v; |
c906108c SS |
11056 | |
11057 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 11058 | if (!can_use_hw_watchpoints) |
c906108c | 11059 | return 0; |
c5aa993b | 11060 | |
5c44784c JM |
11061 | /* Make sure that the value of the expression depends only upon |
11062 | memory contents, and values computed from them within GDB. If we | |
11063 | find any register references or function calls, we can't use a | |
11064 | hardware watchpoint. | |
11065 | ||
11066 | The idea here is that evaluating an expression generates a series | |
11067 | of values, one holding the value of every subexpression. (The | |
11068 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
11069 | a*b+c.) GDB's values hold almost enough information to establish | |
11070 | the criteria given above --- they identify memory lvalues, | |
11071 | register lvalues, computed values, etcetera. So we can evaluate | |
11072 | the expression, and then scan the chain of values that leaves | |
11073 | behind to decide whether we can detect any possible change to the | |
11074 | expression's final value using only hardware watchpoints. | |
11075 | ||
11076 | However, I don't think that the values returned by inferior | |
11077 | function calls are special in any way. So this function may not | |
11078 | notice that an expression involving an inferior function call | |
11079 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 11080 | for (; v; v = value_next (v)) |
c906108c | 11081 | { |
5c44784c | 11082 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 11083 | { |
8464be76 DJ |
11084 | if (v != head && value_lazy (v)) |
11085 | /* A lazy memory lvalue in the chain is one that GDB never | |
11086 | needed to fetch; we either just used its address (e.g., | |
11087 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
11088 | in `a,b'). This doesn't apply to HEAD; if that is | |
11089 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 11090 | ; |
53a5351d | 11091 | else |
5c44784c JM |
11092 | { |
11093 | /* Ahh, memory we actually used! Check if we can cover | |
11094 | it with hardware watchpoints. */ | |
df407dfe | 11095 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
11096 | |
11097 | /* We only watch structs and arrays if user asked for it | |
11098 | explicitly, never if they just happen to appear in a | |
11099 | middle of some value chain. */ | |
11100 | if (v == head | |
11101 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
11102 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
11103 | { | |
42ae5230 | 11104 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
11105 | int len; |
11106 | int num_regs; | |
11107 | ||
a9634178 | 11108 | len = (target_exact_watchpoints |
e09342b5 TJB |
11109 | && is_scalar_type_recursive (vtype))? |
11110 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 11111 | |
e09342b5 TJB |
11112 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
11113 | if (!num_regs) | |
2e70b7b9 MS |
11114 | return 0; |
11115 | else | |
e09342b5 | 11116 | found_memory_cnt += num_regs; |
2e70b7b9 | 11117 | } |
5c44784c | 11118 | } |
c5aa993b | 11119 | } |
5086187c AC |
11120 | else if (VALUE_LVAL (v) != not_lval |
11121 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 11122 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 11123 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 11124 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
11125 | } |
11126 | ||
11127 | /* The expression itself looks suitable for using a hardware | |
11128 | watchpoint, but give the target machine a chance to reject it. */ | |
11129 | return found_memory_cnt; | |
11130 | } | |
11131 | ||
8b93c638 | 11132 | void |
84f4c1fe | 11133 | watch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11134 | { |
84f4c1fe | 11135 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
11136 | } |
11137 | ||
06a64a0b TT |
11138 | /* A helper function that looks for the "-location" argument and then |
11139 | calls watch_command_1. */ | |
11140 | ||
11141 | static void | |
11142 | watch_maybe_just_location (char *arg, int accessflag, int from_tty) | |
11143 | { | |
11144 | int just_location = 0; | |
11145 | ||
11146 | if (arg | |
11147 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
11148 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
11149 | { | |
e9cafbcc | 11150 | arg = skip_spaces (arg); |
06a64a0b TT |
11151 | just_location = 1; |
11152 | } | |
11153 | ||
84f4c1fe | 11154 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 11155 | } |
8926118c | 11156 | |
c5aa993b | 11157 | static void |
fba45db2 | 11158 | watch_command (char *arg, int from_tty) |
c906108c | 11159 | { |
06a64a0b | 11160 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
11161 | } |
11162 | ||
8b93c638 | 11163 | void |
84f4c1fe | 11164 | rwatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11165 | { |
84f4c1fe | 11166 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 11167 | } |
8926118c | 11168 | |
c5aa993b | 11169 | static void |
fba45db2 | 11170 | rwatch_command (char *arg, int from_tty) |
c906108c | 11171 | { |
06a64a0b | 11172 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
11173 | } |
11174 | ||
8b93c638 | 11175 | void |
84f4c1fe | 11176 | awatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11177 | { |
84f4c1fe | 11178 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 11179 | } |
8926118c | 11180 | |
c5aa993b | 11181 | static void |
fba45db2 | 11182 | awatch_command (char *arg, int from_tty) |
c906108c | 11183 | { |
06a64a0b | 11184 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 11185 | } |
c906108c | 11186 | \f |
c5aa993b | 11187 | |
43ff13b4 | 11188 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
11189 | because it uses the mechanisms of breakpoints. */ |
11190 | ||
bfec99b2 PA |
11191 | struct until_break_command_continuation_args |
11192 | { | |
11193 | struct breakpoint *breakpoint; | |
11194 | struct breakpoint *breakpoint2; | |
186c406b | 11195 | int thread_num; |
bfec99b2 PA |
11196 | }; |
11197 | ||
43ff13b4 | 11198 | /* This function is called by fetch_inferior_event via the |
4a64f543 | 11199 | cmd_continuation pointer, to complete the until command. It takes |
43ff13b4 | 11200 | care of cleaning up the temporary breakpoints set up by the until |
4a64f543 | 11201 | command. */ |
c2c6d25f | 11202 | static void |
fa4cd53f | 11203 | until_break_command_continuation (void *arg, int err) |
43ff13b4 | 11204 | { |
bfec99b2 PA |
11205 | struct until_break_command_continuation_args *a = arg; |
11206 | ||
11207 | delete_breakpoint (a->breakpoint); | |
11208 | if (a->breakpoint2) | |
11209 | delete_breakpoint (a->breakpoint2); | |
186c406b | 11210 | delete_longjmp_breakpoint (a->thread_num); |
43ff13b4 JM |
11211 | } |
11212 | ||
c906108c | 11213 | void |
ae66c1fc | 11214 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
11215 | { |
11216 | struct symtabs_and_lines sals; | |
11217 | struct symtab_and_line sal; | |
8556afb4 PA |
11218 | struct frame_info *frame; |
11219 | struct gdbarch *frame_gdbarch; | |
11220 | struct frame_id stack_frame_id; | |
11221 | struct frame_id caller_frame_id; | |
c906108c | 11222 | struct breakpoint *breakpoint; |
f107f563 | 11223 | struct breakpoint *breakpoint2 = NULL; |
c906108c | 11224 | struct cleanup *old_chain; |
186c406b TT |
11225 | int thread; |
11226 | struct thread_info *tp; | |
c906108c SS |
11227 | |
11228 | clear_proceed_status (); | |
11229 | ||
11230 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11231 | this function. */ |
c5aa993b | 11232 | |
1bfeeb0f | 11233 | if (last_displayed_sal_is_valid ()) |
f8eba3c6 | 11234 | sals = decode_line_1 (&arg, DECODE_LINE_FUNFIRSTLINE, |
1bfeeb0f | 11235 | get_last_displayed_symtab (), |
f8eba3c6 | 11236 | get_last_displayed_line ()); |
c906108c | 11237 | else |
f8eba3c6 TT |
11238 | sals = decode_line_1 (&arg, DECODE_LINE_FUNFIRSTLINE, |
11239 | (struct symtab *) NULL, 0); | |
c5aa993b | 11240 | |
c906108c | 11241 | if (sals.nelts != 1) |
8a3fe4f8 | 11242 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11243 | |
c906108c | 11244 | sal = sals.sals[0]; |
4a64f543 | 11245 | xfree (sals.sals); /* malloc'd, so freed. */ |
c5aa993b | 11246 | |
c906108c | 11247 | if (*arg) |
8a3fe4f8 | 11248 | error (_("Junk at end of arguments.")); |
c5aa993b | 11249 | |
c906108c | 11250 | resolve_sal_pc (&sal); |
c5aa993b | 11251 | |
186c406b TT |
11252 | tp = inferior_thread (); |
11253 | thread = tp->num; | |
11254 | ||
883bc8d1 PA |
11255 | old_chain = make_cleanup (null_cleanup, NULL); |
11256 | ||
8556afb4 PA |
11257 | /* Note linespec handling above invalidates the frame chain. |
11258 | Installing a breakpoint also invalidates the frame chain (as it | |
11259 | may need to switch threads), so do any frame handling before | |
11260 | that. */ | |
11261 | ||
11262 | frame = get_selected_frame (NULL); | |
11263 | frame_gdbarch = get_frame_arch (frame); | |
11264 | stack_frame_id = get_stack_frame_id (frame); | |
11265 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11266 | |
ae66c1fc EZ |
11267 | /* Keep within the current frame, or in frames called by the current |
11268 | one. */ | |
edb3359d | 11269 | |
883bc8d1 | 11270 | if (frame_id_p (caller_frame_id)) |
c906108c | 11271 | { |
883bc8d1 PA |
11272 | struct symtab_and_line sal2; |
11273 | ||
11274 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11275 | sal2.pc = frame_unwind_caller_pc (frame); | |
a6d9a66e | 11276 | breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame), |
883bc8d1 PA |
11277 | sal2, |
11278 | caller_frame_id, | |
f107f563 VP |
11279 | bp_until); |
11280 | make_cleanup_delete_breakpoint (breakpoint2); | |
186c406b | 11281 | |
883bc8d1 | 11282 | set_longjmp_breakpoint (tp, caller_frame_id); |
186c406b | 11283 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); |
c906108c | 11284 | } |
c5aa993b | 11285 | |
c70a6932 JK |
11286 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11287 | frame = NULL; | |
11288 | ||
883bc8d1 PA |
11289 | if (anywhere) |
11290 | /* If the user told us to continue until a specified location, | |
11291 | we don't specify a frame at which we need to stop. */ | |
11292 | breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, | |
11293 | null_frame_id, bp_until); | |
11294 | else | |
11295 | /* Otherwise, specify the selected frame, because we want to stop | |
11296 | only at the very same frame. */ | |
11297 | breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, | |
11298 | stack_frame_id, bp_until); | |
11299 | make_cleanup_delete_breakpoint (breakpoint); | |
11300 | ||
a493e3e2 | 11301 | proceed (-1, GDB_SIGNAL_DEFAULT, 0); |
f107f563 | 11302 | |
4a64f543 MS |
11303 | /* If we are running asynchronously, and proceed call above has |
11304 | actually managed to start the target, arrange for breakpoints to | |
11305 | be deleted when the target stops. Otherwise, we're already | |
11306 | stopped and delete breakpoints via cleanup chain. */ | |
f107f563 | 11307 | |
8ea051c5 | 11308 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 11309 | { |
bfec99b2 PA |
11310 | struct until_break_command_continuation_args *args; |
11311 | args = xmalloc (sizeof (*args)); | |
f107f563 | 11312 | |
bfec99b2 PA |
11313 | args->breakpoint = breakpoint; |
11314 | args->breakpoint2 = breakpoint2; | |
186c406b | 11315 | args->thread_num = thread; |
f107f563 VP |
11316 | |
11317 | discard_cleanups (old_chain); | |
95e54da7 PA |
11318 | add_continuation (inferior_thread (), |
11319 | until_break_command_continuation, args, | |
604ead4a | 11320 | xfree); |
f107f563 VP |
11321 | } |
11322 | else | |
c5aa993b | 11323 | do_cleanups (old_chain); |
c906108c | 11324 | } |
ae66c1fc | 11325 | |
c906108c SS |
11326 | /* This function attempts to parse an optional "if <cond>" clause |
11327 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11328 | |
c906108c SS |
11329 | Else, it returns a pointer to the condition string. (It does not |
11330 | attempt to evaluate the string against a particular block.) And, | |
11331 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11332 | if clause in the arg string. */ |
53a5351d | 11333 | |
c906108c | 11334 | static char * |
fba45db2 | 11335 | ep_parse_optional_if_clause (char **arg) |
c906108c | 11336 | { |
c5aa993b JM |
11337 | char *cond_string; |
11338 | ||
11339 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11340 | return NULL; |
c5aa993b | 11341 | |
4a64f543 | 11342 | /* Skip the "if" keyword. */ |
c906108c | 11343 | (*arg) += 2; |
c5aa993b | 11344 | |
c906108c | 11345 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11346 | condition string. */ |
e9cafbcc | 11347 | *arg = skip_spaces (*arg); |
c906108c | 11348 | cond_string = *arg; |
c5aa993b | 11349 | |
4a64f543 MS |
11350 | /* Assume that the condition occupies the remainder of the arg |
11351 | string. */ | |
c906108c | 11352 | (*arg) += strlen (cond_string); |
c5aa993b | 11353 | |
c906108c SS |
11354 | return cond_string; |
11355 | } | |
c5aa993b | 11356 | |
c906108c SS |
11357 | /* Commands to deal with catching events, such as signals, exceptions, |
11358 | process start/exit, etc. */ | |
c5aa993b JM |
11359 | |
11360 | typedef enum | |
11361 | { | |
44feb3ce TT |
11362 | catch_fork_temporary, catch_vfork_temporary, |
11363 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11364 | } |
11365 | catch_fork_kind; | |
11366 | ||
c906108c | 11367 | static void |
cc59ec59 MS |
11368 | catch_fork_command_1 (char *arg, int from_tty, |
11369 | struct cmd_list_element *command) | |
c906108c | 11370 | { |
a6d9a66e | 11371 | struct gdbarch *gdbarch = get_current_arch (); |
c5aa993b | 11372 | char *cond_string = NULL; |
44feb3ce TT |
11373 | catch_fork_kind fork_kind; |
11374 | int tempflag; | |
11375 | ||
11376 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
11377 | tempflag = (fork_kind == catch_fork_temporary | |
11378 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11379 | |
44feb3ce TT |
11380 | if (!arg) |
11381 | arg = ""; | |
e9cafbcc | 11382 | arg = skip_spaces (arg); |
c5aa993b | 11383 | |
c906108c | 11384 | /* The allowed syntax is: |
c5aa993b JM |
11385 | catch [v]fork |
11386 | catch [v]fork if <cond> | |
11387 | ||
4a64f543 | 11388 | First, check if there's an if clause. */ |
c906108c | 11389 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11390 | |
c906108c | 11391 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11392 | error (_("Junk at end of arguments.")); |
c5aa993b | 11393 | |
c906108c | 11394 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11395 | and enable reporting of such events. */ |
c5aa993b JM |
11396 | switch (fork_kind) |
11397 | { | |
44feb3ce TT |
11398 | case catch_fork_temporary: |
11399 | case catch_fork_permanent: | |
a6d9a66e | 11400 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11401 | &catch_fork_breakpoint_ops); |
c906108c | 11402 | break; |
44feb3ce TT |
11403 | case catch_vfork_temporary: |
11404 | case catch_vfork_permanent: | |
a6d9a66e | 11405 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11406 | &catch_vfork_breakpoint_ops); |
c906108c | 11407 | break; |
c5aa993b | 11408 | default: |
8a3fe4f8 | 11409 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11410 | break; |
c5aa993b | 11411 | } |
c906108c SS |
11412 | } |
11413 | ||
11414 | static void | |
cc59ec59 MS |
11415 | catch_exec_command_1 (char *arg, int from_tty, |
11416 | struct cmd_list_element *command) | |
c906108c | 11417 | { |
b4d90040 | 11418 | struct exec_catchpoint *c; |
a6d9a66e | 11419 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 11420 | int tempflag; |
c5aa993b | 11421 | char *cond_string = NULL; |
c906108c | 11422 | |
44feb3ce TT |
11423 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
11424 | ||
11425 | if (!arg) | |
11426 | arg = ""; | |
e9cafbcc | 11427 | arg = skip_spaces (arg); |
c906108c SS |
11428 | |
11429 | /* The allowed syntax is: | |
c5aa993b JM |
11430 | catch exec |
11431 | catch exec if <cond> | |
c906108c | 11432 | |
4a64f543 | 11433 | First, check if there's an if clause. */ |
c906108c SS |
11434 | cond_string = ep_parse_optional_if_clause (&arg); |
11435 | ||
11436 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11437 | error (_("Junk at end of arguments.")); |
c906108c | 11438 | |
b4d90040 PA |
11439 | c = XNEW (struct exec_catchpoint); |
11440 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, | |
11441 | &catch_exec_breakpoint_ops); | |
11442 | c->exec_pathname = NULL; | |
11443 | ||
3ea46bff | 11444 | install_breakpoint (0, &c->base, 1); |
c906108c | 11445 | } |
c5aa993b | 11446 | |
3086aeae | 11447 | static enum print_stop_action |
348d480f | 11448 | print_it_exception_catchpoint (bpstat bs) |
3086aeae | 11449 | { |
79a45e25 | 11450 | struct ui_out *uiout = current_uiout; |
348d480f | 11451 | struct breakpoint *b = bs->breakpoint_at; |
ade92717 | 11452 | int bp_temp, bp_throw; |
3086aeae | 11453 | |
ade92717 | 11454 | annotate_catchpoint (b->number); |
3086aeae | 11455 | |
ade92717 AR |
11456 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
11457 | if (b->loc->address != b->loc->requested_address) | |
11458 | breakpoint_adjustment_warning (b->loc->requested_address, | |
11459 | b->loc->address, | |
11460 | b->number, 1); | |
df2b6d2d | 11461 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
11462 | ui_out_text (uiout, |
11463 | bp_temp ? "Temporary catchpoint " | |
11464 | : "Catchpoint "); | |
11465 | if (!ui_out_is_mi_like_p (uiout)) | |
11466 | ui_out_field_int (uiout, "bkptno", b->number); | |
11467 | ui_out_text (uiout, | |
c0b37c48 AR |
11468 | bp_throw ? " (exception thrown), " |
11469 | : " (exception caught), "); | |
ade92717 AR |
11470 | if (ui_out_is_mi_like_p (uiout)) |
11471 | { | |
11472 | ui_out_field_string (uiout, "reason", | |
11473 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
11474 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
11475 | ui_out_field_int (uiout, "bkptno", b->number); | |
11476 | } | |
3086aeae DJ |
11477 | return PRINT_SRC_AND_LOC; |
11478 | } | |
11479 | ||
11480 | static void | |
cc59ec59 MS |
11481 | print_one_exception_catchpoint (struct breakpoint *b, |
11482 | struct bp_location **last_loc) | |
3086aeae | 11483 | { |
79a45b7d | 11484 | struct value_print_options opts; |
79a45e25 | 11485 | struct ui_out *uiout = current_uiout; |
cc59ec59 | 11486 | |
79a45b7d TT |
11487 | get_user_print_options (&opts); |
11488 | if (opts.addressprint) | |
3086aeae DJ |
11489 | { |
11490 | annotate_field (4); | |
604133b5 AR |
11491 | if (b->loc == NULL || b->loc->shlib_disabled) |
11492 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
11493 | else | |
5af949e3 UW |
11494 | ui_out_field_core_addr (uiout, "addr", |
11495 | b->loc->gdbarch, b->loc->address); | |
3086aeae DJ |
11496 | } |
11497 | annotate_field (5); | |
604133b5 | 11498 | if (b->loc) |
a6d9a66e | 11499 | *last_loc = b->loc; |
3086aeae DJ |
11500 | if (strstr (b->addr_string, "throw") != NULL) |
11501 | ui_out_field_string (uiout, "what", "exception throw"); | |
11502 | else | |
11503 | ui_out_field_string (uiout, "what", "exception catch"); | |
11504 | } | |
11505 | ||
11506 | static void | |
11507 | print_mention_exception_catchpoint (struct breakpoint *b) | |
11508 | { | |
79a45e25 | 11509 | struct ui_out *uiout = current_uiout; |
ade92717 AR |
11510 | int bp_temp; |
11511 | int bp_throw; | |
11512 | ||
df2b6d2d | 11513 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
11514 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
11515 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
11516 | : _("Catchpoint ")); | |
11517 | ui_out_field_int (uiout, "bkptno", b->number); | |
11518 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
11519 | : _(" (catch)")); | |
3086aeae DJ |
11520 | } |
11521 | ||
6149aea9 PA |
11522 | /* Implement the "print_recreate" breakpoint_ops method for throw and |
11523 | catch catchpoints. */ | |
11524 | ||
11525 | static void | |
4a64f543 MS |
11526 | print_recreate_exception_catchpoint (struct breakpoint *b, |
11527 | struct ui_file *fp) | |
6149aea9 PA |
11528 | { |
11529 | int bp_temp; | |
11530 | int bp_throw; | |
11531 | ||
11532 | bp_temp = b->disposition == disp_del; | |
11533 | bp_throw = strstr (b->addr_string, "throw") != NULL; | |
11534 | fprintf_unfiltered (fp, bp_temp ? "tcatch " : "catch "); | |
11535 | fprintf_unfiltered (fp, bp_throw ? "throw" : "catch"); | |
d9b3f62e | 11536 | print_recreate_thread (b, fp); |
6149aea9 PA |
11537 | } |
11538 | ||
2060206e | 11539 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops; |
3086aeae DJ |
11540 | |
11541 | static int | |
11542 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
11543 | enum exception_event_kind ex_event, int from_tty) | |
11544 | { | |
604133b5 AR |
11545 | char *trigger_func_name; |
11546 | ||
3086aeae | 11547 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 11548 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 11549 | else |
604133b5 | 11550 | trigger_func_name = "__cxa_throw"; |
3086aeae | 11551 | |
8cdf0e15 | 11552 | create_breakpoint (get_current_arch (), |
e7e0cddf | 11553 | trigger_func_name, cond_string, -1, NULL, |
8cdf0e15 | 11554 | 0 /* condition and thread are valid. */, |
0fb4aa4b | 11555 | tempflag, bp_breakpoint, |
8cdf0e15 VP |
11556 | 0, |
11557 | AUTO_BOOLEAN_TRUE /* pending */, | |
11558 | &gnu_v3_exception_catchpoint_ops, from_tty, | |
84f4c1fe | 11559 | 1 /* enabled */, |
44f238bb PA |
11560 | 0 /* internal */, |
11561 | 0); | |
3086aeae | 11562 | |
3086aeae DJ |
11563 | return 1; |
11564 | } | |
11565 | ||
4a64f543 | 11566 | /* Deal with "catch catch" and "catch throw" commands. */ |
c906108c SS |
11567 | |
11568 | static void | |
fba45db2 KB |
11569 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
11570 | int tempflag, int from_tty) | |
c906108c | 11571 | { |
c5aa993b | 11572 | char *cond_string = NULL; |
c5aa993b | 11573 | |
44feb3ce TT |
11574 | if (!arg) |
11575 | arg = ""; | |
e9cafbcc | 11576 | arg = skip_spaces (arg); |
c5aa993b | 11577 | |
c906108c SS |
11578 | cond_string = ep_parse_optional_if_clause (&arg); |
11579 | ||
11580 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11581 | error (_("Junk at end of arguments.")); |
c906108c | 11582 | |
059fb39f PM |
11583 | if (ex_event != EX_EVENT_THROW |
11584 | && ex_event != EX_EVENT_CATCH) | |
8a3fe4f8 | 11585 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 11586 | |
3086aeae DJ |
11587 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
11588 | return; | |
11589 | ||
8a3fe4f8 | 11590 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
11591 | } |
11592 | ||
44feb3ce TT |
11593 | /* Implementation of "catch catch" command. */ |
11594 | ||
11595 | static void | |
11596 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
11597 | { | |
11598 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 11599 | |
44feb3ce TT |
11600 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); |
11601 | } | |
11602 | ||
11603 | /* Implementation of "catch throw" command. */ | |
11604 | ||
11605 | static void | |
11606 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
11607 | { | |
11608 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 11609 | |
44feb3ce TT |
11610 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); |
11611 | } | |
11612 | ||
9ac4176b | 11613 | void |
28010a5d PA |
11614 | init_ada_exception_breakpoint (struct breakpoint *b, |
11615 | struct gdbarch *gdbarch, | |
11616 | struct symtab_and_line sal, | |
11617 | char *addr_string, | |
c0a91b2b | 11618 | const struct breakpoint_ops *ops, |
28010a5d PA |
11619 | int tempflag, |
11620 | int from_tty) | |
f7f9143b | 11621 | { |
f7f9143b JB |
11622 | if (from_tty) |
11623 | { | |
5af949e3 UW |
11624 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11625 | if (!loc_gdbarch) | |
11626 | loc_gdbarch = gdbarch; | |
11627 | ||
6c95b8df PA |
11628 | describe_other_breakpoints (loc_gdbarch, |
11629 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
11630 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
11631 | version for exception catchpoints, because two catchpoints | |
11632 | used for different exception names will use the same address. | |
11633 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 11634 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 11635 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
11636 | the user what type of catchpoint it is. The above is good |
11637 | enough for now, though. */ | |
11638 | } | |
11639 | ||
28010a5d | 11640 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b JB |
11641 | |
11642 | b->enable_state = bp_enabled; | |
11643 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
f7f9143b JB |
11644 | b->addr_string = addr_string; |
11645 | b->language = language_ada; | |
f7f9143b JB |
11646 | } |
11647 | ||
a96d9b2e SDJ |
11648 | /* Splits the argument using space as delimiter. Returns an xmalloc'd |
11649 | filter list, or NULL if no filtering is required. */ | |
11650 | static VEC(int) * | |
11651 | catch_syscall_split_args (char *arg) | |
11652 | { | |
11653 | VEC(int) *result = NULL; | |
29d0bb3d | 11654 | struct cleanup *cleanup = make_cleanup (VEC_cleanup (int), &result); |
a96d9b2e SDJ |
11655 | |
11656 | while (*arg != '\0') | |
11657 | { | |
11658 | int i, syscall_number; | |
11659 | char *endptr; | |
11660 | char cur_name[128]; | |
11661 | struct syscall s; | |
11662 | ||
11663 | /* Skip whitespace. */ | |
11664 | while (isspace (*arg)) | |
11665 | arg++; | |
11666 | ||
11667 | for (i = 0; i < 127 && arg[i] && !isspace (arg[i]); ++i) | |
11668 | cur_name[i] = arg[i]; | |
11669 | cur_name[i] = '\0'; | |
11670 | arg += i; | |
11671 | ||
11672 | /* Check if the user provided a syscall name or a number. */ | |
11673 | syscall_number = (int) strtol (cur_name, &endptr, 0); | |
11674 | if (*endptr == '\0') | |
bccd0dd2 | 11675 | get_syscall_by_number (syscall_number, &s); |
a96d9b2e SDJ |
11676 | else |
11677 | { | |
11678 | /* We have a name. Let's check if it's valid and convert it | |
11679 | to a number. */ | |
11680 | get_syscall_by_name (cur_name, &s); | |
11681 | ||
11682 | if (s.number == UNKNOWN_SYSCALL) | |
4a64f543 MS |
11683 | /* Here we have to issue an error instead of a warning, |
11684 | because GDB cannot do anything useful if there's no | |
11685 | syscall number to be caught. */ | |
a96d9b2e SDJ |
11686 | error (_("Unknown syscall name '%s'."), cur_name); |
11687 | } | |
11688 | ||
11689 | /* Ok, it's valid. */ | |
11690 | VEC_safe_push (int, result, s.number); | |
11691 | } | |
11692 | ||
11693 | discard_cleanups (cleanup); | |
11694 | return result; | |
11695 | } | |
11696 | ||
11697 | /* Implement the "catch syscall" command. */ | |
11698 | ||
11699 | static void | |
cc59ec59 MS |
11700 | catch_syscall_command_1 (char *arg, int from_tty, |
11701 | struct cmd_list_element *command) | |
a96d9b2e SDJ |
11702 | { |
11703 | int tempflag; | |
11704 | VEC(int) *filter; | |
11705 | struct syscall s; | |
11706 | struct gdbarch *gdbarch = get_current_arch (); | |
11707 | ||
11708 | /* Checking if the feature if supported. */ | |
11709 | if (gdbarch_get_syscall_number_p (gdbarch) == 0) | |
11710 | error (_("The feature 'catch syscall' is not supported on \ | |
ea666128 | 11711 | this architecture yet.")); |
a96d9b2e SDJ |
11712 | |
11713 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
11714 | ||
e9cafbcc | 11715 | arg = skip_spaces (arg); |
a96d9b2e SDJ |
11716 | |
11717 | /* We need to do this first "dummy" translation in order | |
11718 | to get the syscall XML file loaded or, most important, | |
11719 | to display a warning to the user if there's no XML file | |
11720 | for his/her architecture. */ | |
11721 | get_syscall_by_number (0, &s); | |
11722 | ||
11723 | /* The allowed syntax is: | |
11724 | catch syscall | |
11725 | catch syscall <name | number> [<name | number> ... <name | number>] | |
11726 | ||
11727 | Let's check if there's a syscall name. */ | |
11728 | ||
11729 | if (arg != NULL) | |
11730 | filter = catch_syscall_split_args (arg); | |
11731 | else | |
11732 | filter = NULL; | |
11733 | ||
11734 | create_syscall_event_catchpoint (tempflag, filter, | |
11735 | &catch_syscall_breakpoint_ops); | |
11736 | } | |
11737 | ||
c906108c | 11738 | static void |
fba45db2 | 11739 | catch_command (char *arg, int from_tty) |
c906108c | 11740 | { |
44feb3ce | 11741 | error (_("Catch requires an event name.")); |
c906108c SS |
11742 | } |
11743 | \f | |
11744 | ||
11745 | static void | |
fba45db2 | 11746 | tcatch_command (char *arg, int from_tty) |
c906108c | 11747 | { |
44feb3ce | 11748 | error (_("Catch requires an event name.")); |
c906108c SS |
11749 | } |
11750 | ||
8a2c437b TT |
11751 | /* A qsort comparison function that sorts breakpoints in order. */ |
11752 | ||
11753 | static int | |
11754 | compare_breakpoints (const void *a, const void *b) | |
11755 | { | |
11756 | const breakpoint_p *ba = a; | |
11757 | uintptr_t ua = (uintptr_t) *ba; | |
11758 | const breakpoint_p *bb = b; | |
11759 | uintptr_t ub = (uintptr_t) *bb; | |
11760 | ||
11761 | if ((*ba)->number < (*bb)->number) | |
11762 | return -1; | |
11763 | else if ((*ba)->number > (*bb)->number) | |
11764 | return 1; | |
11765 | ||
11766 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11767 | the number 0. */ | |
11768 | if (ua < ub) | |
11769 | return -1; | |
11770 | return ub > ub ? 1 : 0; | |
11771 | } | |
11772 | ||
80f8a6eb | 11773 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11774 | |
11775 | static void | |
fba45db2 | 11776 | clear_command (char *arg, int from_tty) |
c906108c | 11777 | { |
8a2c437b | 11778 | struct breakpoint *b, *prev; |
d6e956e5 VP |
11779 | VEC(breakpoint_p) *found = 0; |
11780 | int ix; | |
c906108c SS |
11781 | int default_match; |
11782 | struct symtabs_and_lines sals; | |
11783 | struct symtab_and_line sal; | |
c906108c | 11784 | int i; |
8a2c437b | 11785 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); |
c906108c SS |
11786 | |
11787 | if (arg) | |
11788 | { | |
39cf75f7 DE |
11789 | sals = decode_line_with_current_source (arg, |
11790 | (DECODE_LINE_FUNFIRSTLINE | |
11791 | | DECODE_LINE_LIST_MODE)); | |
c906108c SS |
11792 | default_match = 0; |
11793 | } | |
11794 | else | |
11795 | { | |
c5aa993b | 11796 | sals.sals = (struct symtab_and_line *) |
c906108c | 11797 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 11798 | make_cleanup (xfree, sals.sals); |
4a64f543 | 11799 | init_sal (&sal); /* Initialize to zeroes. */ |
1bfeeb0f JL |
11800 | |
11801 | /* Set sal's line, symtab, pc, and pspace to the values | |
11802 | corresponding to the last call to print_frame_info. If the | |
11803 | codepoint is not valid, this will set all the fields to 0. */ | |
11804 | get_last_displayed_sal (&sal); | |
c906108c | 11805 | if (sal.symtab == 0) |
8a3fe4f8 | 11806 | error (_("No source file specified.")); |
c906108c SS |
11807 | |
11808 | sals.sals[0] = sal; | |
11809 | sals.nelts = 1; | |
11810 | ||
11811 | default_match = 1; | |
11812 | } | |
11813 | ||
4a64f543 MS |
11814 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11815 | seems, because all existing breakpoints typically have both | |
11816 | file/line and pc set. So, if clear is given file/line, we can | |
11817 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11818 | |
11819 | We only support clearing given the address explicitly | |
11820 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11821 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11822 | due to optimization, all in one block. |
4a64f543 MS |
11823 | |
11824 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11825 | PC corresponding to the same file:line, the breakpoint won't |
11826 | be cleared. We probably can still clear the breakpoint, but | |
11827 | since the other PC value is never presented to user, user | |
11828 | can only find it by guessing, and it does not seem important | |
11829 | to support that. */ | |
11830 | ||
4a64f543 MS |
11831 | /* For each line spec given, delete bps which correspond to it. Do |
11832 | it in two passes, solely to preserve the current behavior that | |
11833 | from_tty is forced true if we delete more than one | |
11834 | breakpoint. */ | |
c906108c | 11835 | |
80f8a6eb | 11836 | found = NULL; |
8a2c437b | 11837 | make_cleanup (VEC_cleanup (breakpoint_p), &found); |
c906108c SS |
11838 | for (i = 0; i < sals.nelts; i++) |
11839 | { | |
4aac40c8 TT |
11840 | int is_abs, sal_name_len; |
11841 | ||
c906108c | 11842 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
11843 | If line given (pc == 0), clear all bpts on specified line. |
11844 | If defaulting, clear all bpts on default line | |
c906108c | 11845 | or at default pc. |
c5aa993b JM |
11846 | |
11847 | defaulting sal.pc != 0 tests to do | |
11848 | ||
11849 | 0 1 pc | |
11850 | 1 1 pc _and_ line | |
11851 | 0 0 line | |
11852 | 1 0 <can't happen> */ | |
c906108c SS |
11853 | |
11854 | sal = sals.sals[i]; | |
4aac40c8 TT |
11855 | is_abs = sal.symtab == NULL ? 1 : IS_ABSOLUTE_PATH (sal.symtab->filename); |
11856 | sal_name_len = is_abs ? 0 : strlen (sal.symtab->filename); | |
c906108c | 11857 | |
4a64f543 | 11858 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 11859 | ALL_BREAKPOINTS (b) |
c5aa993b | 11860 | { |
0d381245 | 11861 | int match = 0; |
4a64f543 | 11862 | /* Are we going to delete b? */ |
cc60f2e3 | 11863 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
11864 | { |
11865 | struct bp_location *loc = b->loc; | |
11866 | for (; loc; loc = loc->next) | |
11867 | { | |
f8eba3c6 TT |
11868 | /* If the user specified file:line, don't allow a PC |
11869 | match. This matches historical gdb behavior. */ | |
11870 | int pc_match = (!sal.explicit_line | |
11871 | && sal.pc | |
11872 | && (loc->pspace == sal.pspace) | |
11873 | && (loc->address == sal.pc) | |
11874 | && (!section_is_overlay (loc->section) | |
11875 | || loc->section == sal.section)); | |
4aac40c8 TT |
11876 | int line_match = 0; |
11877 | ||
11878 | if ((default_match || sal.explicit_line) | |
11879 | && loc->source_file != NULL | |
11880 | && sal.symtab != NULL | |
11881 | && sal.pspace == loc->pspace | |
11882 | && loc->line_number == sal.line) | |
11883 | { | |
11884 | if (filename_cmp (loc->source_file, | |
11885 | sal.symtab->filename) == 0) | |
11886 | line_match = 1; | |
11887 | else if (!IS_ABSOLUTE_PATH (sal.symtab->filename) | |
11888 | && compare_filenames_for_search (loc->source_file, | |
11889 | sal.symtab->filename, | |
11890 | sal_name_len)) | |
11891 | line_match = 1; | |
11892 | } | |
11893 | ||
0d381245 VP |
11894 | if (pc_match || line_match) |
11895 | { | |
11896 | match = 1; | |
11897 | break; | |
11898 | } | |
11899 | } | |
11900 | } | |
11901 | ||
11902 | if (match) | |
d6e956e5 | 11903 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 11904 | } |
80f8a6eb | 11905 | } |
8a2c437b | 11906 | |
80f8a6eb | 11907 | /* Now go thru the 'found' chain and delete them. */ |
d6e956e5 | 11908 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
11909 | { |
11910 | if (arg) | |
8a3fe4f8 | 11911 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11912 | else |
8a3fe4f8 | 11913 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11914 | } |
c906108c | 11915 | |
8a2c437b TT |
11916 | /* Remove duplicates from the vec. */ |
11917 | qsort (VEC_address (breakpoint_p, found), | |
11918 | VEC_length (breakpoint_p, found), | |
11919 | sizeof (breakpoint_p), | |
11920 | compare_breakpoints); | |
11921 | prev = VEC_index (breakpoint_p, found, 0); | |
11922 | for (ix = 1; VEC_iterate (breakpoint_p, found, ix, b); ++ix) | |
11923 | { | |
11924 | if (b == prev) | |
11925 | { | |
11926 | VEC_ordered_remove (breakpoint_p, found, ix); | |
11927 | --ix; | |
11928 | } | |
11929 | } | |
11930 | ||
d6e956e5 | 11931 | if (VEC_length(breakpoint_p, found) > 1) |
4a64f543 | 11932 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11933 | if (from_tty) |
a3f17187 | 11934 | { |
d6e956e5 | 11935 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
11936 | printf_unfiltered (_("Deleted breakpoint ")); |
11937 | else | |
11938 | printf_unfiltered (_("Deleted breakpoints ")); | |
11939 | } | |
80f8a6eb | 11940 | breakpoints_changed (); |
d6e956e5 VP |
11941 | |
11942 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 11943 | { |
c5aa993b | 11944 | if (from_tty) |
d6e956e5 VP |
11945 | printf_unfiltered ("%d ", b->number); |
11946 | delete_breakpoint (b); | |
c906108c | 11947 | } |
80f8a6eb MS |
11948 | if (from_tty) |
11949 | putchar_unfiltered ('\n'); | |
8a2c437b TT |
11950 | |
11951 | do_cleanups (cleanups); | |
c906108c SS |
11952 | } |
11953 | \f | |
11954 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
11955 | all breakpoints that are marked for deletion, whether hit or not. | |
11956 | This is called after any breakpoint is hit, or after errors. */ | |
11957 | ||
11958 | void | |
fba45db2 | 11959 | breakpoint_auto_delete (bpstat bs) |
c906108c | 11960 | { |
35df4500 | 11961 | struct breakpoint *b, *b_tmp; |
c906108c SS |
11962 | |
11963 | for (; bs; bs = bs->next) | |
f431efe5 PA |
11964 | if (bs->breakpoint_at |
11965 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 11966 | && bs->stop) |
f431efe5 | 11967 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 11968 | |
35df4500 | 11969 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 11970 | { |
b5de0fa7 | 11971 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
11972 | delete_breakpoint (b); |
11973 | } | |
c906108c SS |
11974 | } |
11975 | ||
4a64f543 MS |
11976 | /* A comparison function for bp_location AP and BP being interfaced to |
11977 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
11978 | does breakpoint_address_is_meaningful say for its OWNER), | |
11979 | secondarily by ordering first bp_permanent OWNERed elements and | |
11980 | terciarily just ensuring the array is sorted stable way despite | |
e5dd4106 | 11981 | qsort being an unstable algorithm. */ |
876fa593 JK |
11982 | |
11983 | static int | |
494cfb0f | 11984 | bp_location_compare (const void *ap, const void *bp) |
876fa593 | 11985 | { |
494cfb0f JK |
11986 | struct bp_location *a = *(void **) ap; |
11987 | struct bp_location *b = *(void **) bp; | |
2bdf28a0 | 11988 | /* A and B come from existing breakpoints having non-NULL OWNER. */ |
876fa593 JK |
11989 | int a_perm = a->owner->enable_state == bp_permanent; |
11990 | int b_perm = b->owner->enable_state == bp_permanent; | |
11991 | ||
11992 | if (a->address != b->address) | |
11993 | return (a->address > b->address) - (a->address < b->address); | |
11994 | ||
dea2aa5f LM |
11995 | /* Sort locations at the same address by their pspace number, keeping |
11996 | locations of the same inferior (in a multi-inferior environment) | |
11997 | grouped. */ | |
11998 | ||
11999 | if (a->pspace->num != b->pspace->num) | |
12000 | return ((a->pspace->num > b->pspace->num) | |
12001 | - (a->pspace->num < b->pspace->num)); | |
12002 | ||
876fa593 JK |
12003 | /* Sort permanent breakpoints first. */ |
12004 | if (a_perm != b_perm) | |
12005 | return (a_perm < b_perm) - (a_perm > b_perm); | |
12006 | ||
c56a97f9 JK |
12007 | /* Make the internal GDB representation stable across GDB runs |
12008 | where A and B memory inside GDB can differ. Breakpoint locations of | |
12009 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
12010 | |
12011 | if (a->owner->number != b->owner->number) | |
c56a97f9 JK |
12012 | return ((a->owner->number > b->owner->number) |
12013 | - (a->owner->number < b->owner->number)); | |
876fa593 JK |
12014 | |
12015 | return (a > b) - (a < b); | |
12016 | } | |
12017 | ||
876fa593 | 12018 | /* Set bp_location_placed_address_before_address_max and |
4a64f543 MS |
12019 | bp_location_shadow_len_after_address_max according to the current |
12020 | content of the bp_location array. */ | |
f7545552 TT |
12021 | |
12022 | static void | |
876fa593 | 12023 | bp_location_target_extensions_update (void) |
f7545552 | 12024 | { |
876fa593 JK |
12025 | struct bp_location *bl, **blp_tmp; |
12026 | ||
12027 | bp_location_placed_address_before_address_max = 0; | |
12028 | bp_location_shadow_len_after_address_max = 0; | |
12029 | ||
12030 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
12031 | { | |
12032 | CORE_ADDR start, end, addr; | |
12033 | ||
12034 | if (!bp_location_has_shadow (bl)) | |
12035 | continue; | |
12036 | ||
12037 | start = bl->target_info.placed_address; | |
12038 | end = start + bl->target_info.shadow_len; | |
12039 | ||
12040 | gdb_assert (bl->address >= start); | |
12041 | addr = bl->address - start; | |
12042 | if (addr > bp_location_placed_address_before_address_max) | |
12043 | bp_location_placed_address_before_address_max = addr; | |
12044 | ||
12045 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
12046 | ||
12047 | gdb_assert (bl->address < end); | |
12048 | addr = end - bl->address; | |
12049 | if (addr > bp_location_shadow_len_after_address_max) | |
12050 | bp_location_shadow_len_after_address_max = addr; | |
12051 | } | |
f7545552 TT |
12052 | } |
12053 | ||
1e4d1764 YQ |
12054 | /* Download tracepoint locations if they haven't been. */ |
12055 | ||
12056 | static void | |
12057 | download_tracepoint_locations (void) | |
12058 | { | |
12059 | struct bp_location *bl, **blp_tmp; | |
12060 | struct cleanup *old_chain; | |
12061 | ||
12062 | if (!target_can_download_tracepoint ()) | |
12063 | return; | |
12064 | ||
12065 | old_chain = save_current_space_and_thread (); | |
12066 | ||
12067 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
12068 | { | |
12069 | struct tracepoint *t; | |
12070 | ||
12071 | if (!is_tracepoint (bl->owner)) | |
12072 | continue; | |
12073 | ||
12074 | if ((bl->owner->type == bp_fast_tracepoint | |
12075 | ? !may_insert_fast_tracepoints | |
12076 | : !may_insert_tracepoints)) | |
12077 | continue; | |
12078 | ||
12079 | /* In tracepoint, locations are _never_ duplicated, so | |
12080 | should_be_inserted is equivalent to | |
12081 | unduplicated_should_be_inserted. */ | |
12082 | if (!should_be_inserted (bl) || bl->inserted) | |
12083 | continue; | |
12084 | ||
12085 | switch_to_program_space_and_thread (bl->pspace); | |
12086 | ||
12087 | target_download_tracepoint (bl); | |
12088 | ||
12089 | bl->inserted = 1; | |
12090 | t = (struct tracepoint *) bl->owner; | |
12091 | t->number_on_target = bl->owner->number; | |
12092 | } | |
12093 | ||
12094 | do_cleanups (old_chain); | |
12095 | } | |
12096 | ||
934709f0 PW |
12097 | /* Swap the insertion/duplication state between two locations. */ |
12098 | ||
12099 | static void | |
12100 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
12101 | { | |
12102 | const int left_inserted = left->inserted; | |
12103 | const int left_duplicate = left->duplicate; | |
b775012e | 12104 | const int left_needs_update = left->needs_update; |
934709f0 PW |
12105 | const struct bp_target_info left_target_info = left->target_info; |
12106 | ||
1e4d1764 YQ |
12107 | /* Locations of tracepoints can never be duplicated. */ |
12108 | if (is_tracepoint (left->owner)) | |
12109 | gdb_assert (!left->duplicate); | |
12110 | if (is_tracepoint (right->owner)) | |
12111 | gdb_assert (!right->duplicate); | |
12112 | ||
934709f0 PW |
12113 | left->inserted = right->inserted; |
12114 | left->duplicate = right->duplicate; | |
b775012e | 12115 | left->needs_update = right->needs_update; |
934709f0 PW |
12116 | left->target_info = right->target_info; |
12117 | right->inserted = left_inserted; | |
12118 | right->duplicate = left_duplicate; | |
b775012e | 12119 | right->needs_update = left_needs_update; |
934709f0 PW |
12120 | right->target_info = left_target_info; |
12121 | } | |
12122 | ||
b775012e LM |
12123 | /* Force the re-insertion of the locations at ADDRESS. This is called |
12124 | once a new/deleted/modified duplicate location is found and we are evaluating | |
12125 | conditions on the target's side. Such conditions need to be updated on | |
12126 | the target. */ | |
12127 | ||
12128 | static void | |
12129 | force_breakpoint_reinsertion (struct bp_location *bl) | |
12130 | { | |
12131 | struct bp_location **locp = NULL, **loc2p; | |
12132 | struct bp_location *loc; | |
12133 | CORE_ADDR address = 0; | |
12134 | int pspace_num; | |
12135 | ||
12136 | address = bl->address; | |
12137 | pspace_num = bl->pspace->num; | |
12138 | ||
12139 | /* This is only meaningful if the target is | |
12140 | evaluating conditions and if the user has | |
12141 | opted for condition evaluation on the target's | |
12142 | side. */ | |
12143 | if (gdb_evaluates_breakpoint_condition_p () | |
12144 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
12145 | return; | |
12146 | ||
12147 | /* Flag all breakpoint locations with this address and | |
12148 | the same program space as the location | |
12149 | as "its condition has changed". We need to | |
12150 | update the conditions on the target's side. */ | |
12151 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
12152 | { | |
12153 | loc = *loc2p; | |
12154 | ||
12155 | if (!is_breakpoint (loc->owner) | |
12156 | || pspace_num != loc->pspace->num) | |
12157 | continue; | |
12158 | ||
12159 | /* Flag the location appropriately. We use a different state to | |
12160 | let everyone know that we already updated the set of locations | |
12161 | with addr bl->address and program space bl->pspace. This is so | |
12162 | we don't have to keep calling these functions just to mark locations | |
12163 | that have already been marked. */ | |
12164 | loc->condition_changed = condition_updated; | |
12165 | ||
12166 | /* Free the agent expression bytecode as well. We will compute | |
12167 | it later on. */ | |
12168 | if (loc->cond_bytecode) | |
12169 | { | |
12170 | free_agent_expr (loc->cond_bytecode); | |
12171 | loc->cond_bytecode = NULL; | |
12172 | } | |
12173 | } | |
12174 | } | |
12175 | ||
4cd9bd08 | 12176 | /* If SHOULD_INSERT is false, do not insert any breakpoint locations |
b60e7edf PA |
12177 | into the inferior, only remove already-inserted locations that no |
12178 | longer should be inserted. Functions that delete a breakpoint or | |
12179 | breakpoints should pass false, so that deleting a breakpoint | |
12180 | doesn't have the side effect of inserting the locations of other | |
12181 | breakpoints that are marked not-inserted, but should_be_inserted | |
12182 | returns true on them. | |
12183 | ||
12184 | This behaviour is useful is situations close to tear-down -- e.g., | |
12185 | after an exec, while the target still has execution, but breakpoint | |
12186 | shadows of the previous executable image should *NOT* be restored | |
12187 | to the new image; or before detaching, where the target still has | |
12188 | execution and wants to delete breakpoints from GDB's lists, and all | |
12189 | breakpoints had already been removed from the inferior. */ | |
12190 | ||
0d381245 | 12191 | static void |
b60e7edf | 12192 | update_global_location_list (int should_insert) |
0d381245 | 12193 | { |
74960c60 | 12194 | struct breakpoint *b; |
876fa593 | 12195 | struct bp_location **locp, *loc; |
f7545552 | 12196 | struct cleanup *cleanups; |
b775012e LM |
12197 | /* Last breakpoint location address that was marked for update. */ |
12198 | CORE_ADDR last_addr = 0; | |
12199 | /* Last breakpoint location program space that was marked for update. */ | |
12200 | int last_pspace_num = -1; | |
f7545552 | 12201 | |
2d134ed3 PA |
12202 | /* Used in the duplicates detection below. When iterating over all |
12203 | bp_locations, points to the first bp_location of a given address. | |
12204 | Breakpoints and watchpoints of different types are never | |
12205 | duplicates of each other. Keep one pointer for each type of | |
12206 | breakpoint/watchpoint, so we only need to loop over all locations | |
12207 | once. */ | |
12208 | struct bp_location *bp_loc_first; /* breakpoint */ | |
12209 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
12210 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
12211 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 12212 | |
4a64f543 MS |
12213 | /* Saved former bp_location array which we compare against the newly |
12214 | built bp_location from the current state of ALL_BREAKPOINTS. */ | |
876fa593 JK |
12215 | struct bp_location **old_location, **old_locp; |
12216 | unsigned old_location_count; | |
12217 | ||
12218 | old_location = bp_location; | |
12219 | old_location_count = bp_location_count; | |
12220 | bp_location = NULL; | |
12221 | bp_location_count = 0; | |
12222 | cleanups = make_cleanup (xfree, old_location); | |
0d381245 | 12223 | |
74960c60 | 12224 | ALL_BREAKPOINTS (b) |
876fa593 JK |
12225 | for (loc = b->loc; loc; loc = loc->next) |
12226 | bp_location_count++; | |
12227 | ||
12228 | bp_location = xmalloc (sizeof (*bp_location) * bp_location_count); | |
12229 | locp = bp_location; | |
12230 | ALL_BREAKPOINTS (b) | |
12231 | for (loc = b->loc; loc; loc = loc->next) | |
12232 | *locp++ = loc; | |
12233 | qsort (bp_location, bp_location_count, sizeof (*bp_location), | |
494cfb0f | 12234 | bp_location_compare); |
876fa593 JK |
12235 | |
12236 | bp_location_target_extensions_update (); | |
74960c60 | 12237 | |
4a64f543 MS |
12238 | /* Identify bp_location instances that are no longer present in the |
12239 | new list, and therefore should be freed. Note that it's not | |
12240 | necessary that those locations should be removed from inferior -- | |
12241 | if there's another location at the same address (previously | |
12242 | marked as duplicate), we don't need to remove/insert the | |
12243 | location. | |
876fa593 | 12244 | |
4a64f543 MS |
12245 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
12246 | and former bp_location array state respectively. */ | |
876fa593 JK |
12247 | |
12248 | locp = bp_location; | |
12249 | for (old_locp = old_location; old_locp < old_location + old_location_count; | |
12250 | old_locp++) | |
74960c60 | 12251 | { |
876fa593 | 12252 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 12253 | struct bp_location **loc2p; |
876fa593 | 12254 | |
e5dd4106 | 12255 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 12256 | not, we have to free it. */ |
c7d46a38 | 12257 | int found_object = 0; |
20874c92 VP |
12258 | /* Tells if the location should remain inserted in the target. */ |
12259 | int keep_in_target = 0; | |
12260 | int removed = 0; | |
876fa593 | 12261 | |
4a64f543 MS |
12262 | /* Skip LOCP entries which will definitely never be needed. |
12263 | Stop either at or being the one matching OLD_LOC. */ | |
876fa593 | 12264 | while (locp < bp_location + bp_location_count |
c7d46a38 | 12265 | && (*locp)->address < old_loc->address) |
876fa593 | 12266 | locp++; |
c7d46a38 PA |
12267 | |
12268 | for (loc2p = locp; | |
12269 | (loc2p < bp_location + bp_location_count | |
12270 | && (*loc2p)->address == old_loc->address); | |
12271 | loc2p++) | |
12272 | { | |
b775012e LM |
12273 | /* Check if this is a new/duplicated location or a duplicated |
12274 | location that had its condition modified. If so, we want to send | |
12275 | its condition to the target if evaluation of conditions is taking | |
12276 | place there. */ | |
12277 | if ((*loc2p)->condition_changed == condition_modified | |
12278 | && (last_addr != old_loc->address | |
12279 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 12280 | { |
b775012e LM |
12281 | force_breakpoint_reinsertion (*loc2p); |
12282 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 12283 | } |
b775012e LM |
12284 | |
12285 | if (*loc2p == old_loc) | |
12286 | found_object = 1; | |
c7d46a38 | 12287 | } |
74960c60 | 12288 | |
b775012e LM |
12289 | /* We have already handled this address, update it so that we don't |
12290 | have to go through updates again. */ | |
12291 | last_addr = old_loc->address; | |
12292 | ||
12293 | /* Target-side condition evaluation: Handle deleted locations. */ | |
12294 | if (!found_object) | |
12295 | force_breakpoint_reinsertion (old_loc); | |
12296 | ||
4a64f543 MS |
12297 | /* If this location is no longer present, and inserted, look if |
12298 | there's maybe a new location at the same address. If so, | |
12299 | mark that one inserted, and don't remove this one. This is | |
12300 | needed so that we don't have a time window where a breakpoint | |
12301 | at certain location is not inserted. */ | |
74960c60 | 12302 | |
876fa593 | 12303 | if (old_loc->inserted) |
0d381245 | 12304 | { |
4a64f543 MS |
12305 | /* If the location is inserted now, we might have to remove |
12306 | it. */ | |
74960c60 | 12307 | |
876fa593 | 12308 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 12309 | { |
4a64f543 MS |
12310 | /* The location is still present in the location list, |
12311 | and still should be inserted. Don't do anything. */ | |
20874c92 | 12312 | keep_in_target = 1; |
74960c60 VP |
12313 | } |
12314 | else | |
12315 | { | |
b775012e LM |
12316 | /* This location still exists, but it won't be kept in the |
12317 | target since it may have been disabled. We proceed to | |
12318 | remove its target-side condition. */ | |
12319 | ||
4a64f543 MS |
12320 | /* The location is either no longer present, or got |
12321 | disabled. See if there's another location at the | |
12322 | same address, in which case we don't need to remove | |
12323 | this one from the target. */ | |
876fa593 | 12324 | |
2bdf28a0 | 12325 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
12326 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
12327 | { | |
876fa593 | 12328 | for (loc2p = locp; |
c7d46a38 PA |
12329 | (loc2p < bp_location + bp_location_count |
12330 | && (*loc2p)->address == old_loc->address); | |
876fa593 JK |
12331 | loc2p++) |
12332 | { | |
12333 | struct bp_location *loc2 = *loc2p; | |
12334 | ||
2d134ed3 | 12335 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 12336 | { |
85d721b8 PA |
12337 | /* Read watchpoint locations are switched to |
12338 | access watchpoints, if the former are not | |
12339 | supported, but the latter are. */ | |
12340 | if (is_hardware_watchpoint (old_loc->owner)) | |
12341 | { | |
12342 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
12343 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
12344 | } | |
12345 | ||
934709f0 PW |
12346 | /* loc2 is a duplicated location. We need to check |
12347 | if it should be inserted in case it will be | |
12348 | unduplicated. */ | |
12349 | if (loc2 != old_loc | |
12350 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 12351 | { |
934709f0 | 12352 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
12353 | keep_in_target = 1; |
12354 | break; | |
12355 | } | |
876fa593 JK |
12356 | } |
12357 | } | |
12358 | } | |
74960c60 VP |
12359 | } |
12360 | ||
20874c92 VP |
12361 | if (!keep_in_target) |
12362 | { | |
876fa593 | 12363 | if (remove_breakpoint (old_loc, mark_uninserted)) |
20874c92 | 12364 | { |
4a64f543 MS |
12365 | /* This is just about all we can do. We could keep |
12366 | this location on the global list, and try to | |
12367 | remove it next time, but there's no particular | |
12368 | reason why we will succeed next time. | |
20874c92 | 12369 | |
4a64f543 MS |
12370 | Note that at this point, old_loc->owner is still |
12371 | valid, as delete_breakpoint frees the breakpoint | |
12372 | only after calling us. */ | |
3e43a32a MS |
12373 | printf_filtered (_("warning: Error removing " |
12374 | "breakpoint %d\n"), | |
876fa593 | 12375 | old_loc->owner->number); |
20874c92 VP |
12376 | } |
12377 | removed = 1; | |
12378 | } | |
0d381245 | 12379 | } |
74960c60 VP |
12380 | |
12381 | if (!found_object) | |
1c5cfe86 | 12382 | { |
db82e815 PA |
12383 | if (removed && non_stop |
12384 | && breakpoint_address_is_meaningful (old_loc->owner) | |
12385 | && !is_hardware_watchpoint (old_loc->owner)) | |
20874c92 | 12386 | { |
db82e815 PA |
12387 | /* This location was removed from the target. In |
12388 | non-stop mode, a race condition is possible where | |
12389 | we've removed a breakpoint, but stop events for that | |
12390 | breakpoint are already queued and will arrive later. | |
12391 | We apply an heuristic to be able to distinguish such | |
12392 | SIGTRAPs from other random SIGTRAPs: we keep this | |
12393 | breakpoint location for a bit, and will retire it | |
12394 | after we see some number of events. The theory here | |
12395 | is that reporting of events should, "on the average", | |
12396 | be fair, so after a while we'll see events from all | |
12397 | threads that have anything of interest, and no longer | |
12398 | need to keep this breakpoint location around. We | |
12399 | don't hold locations forever so to reduce chances of | |
12400 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
12401 | SIGTRAP. | |
12402 | ||
12403 | The heuristic failing can be disastrous on | |
12404 | decr_pc_after_break targets. | |
12405 | ||
12406 | On decr_pc_after_break targets, like e.g., x86-linux, | |
12407 | if we fail to recognize a late breakpoint SIGTRAP, | |
12408 | because events_till_retirement has reached 0 too | |
12409 | soon, we'll fail to do the PC adjustment, and report | |
12410 | a random SIGTRAP to the user. When the user resumes | |
12411 | the inferior, it will most likely immediately crash | |
2dec564e | 12412 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
12413 | corrupted, because of being resumed e.g., in the |
12414 | middle of a multi-byte instruction, or skipped a | |
12415 | one-byte instruction. This was actually seen happen | |
12416 | on native x86-linux, and should be less rare on | |
12417 | targets that do not support new thread events, like | |
12418 | remote, due to the heuristic depending on | |
12419 | thread_count. | |
12420 | ||
12421 | Mistaking a random SIGTRAP for a breakpoint trap | |
12422 | causes similar symptoms (PC adjustment applied when | |
12423 | it shouldn't), but then again, playing with SIGTRAPs | |
12424 | behind the debugger's back is asking for trouble. | |
12425 | ||
12426 | Since hardware watchpoint traps are always | |
12427 | distinguishable from other traps, so we don't need to | |
12428 | apply keep hardware watchpoint moribund locations | |
12429 | around. We simply always ignore hardware watchpoint | |
12430 | traps we can no longer explain. */ | |
12431 | ||
876fa593 JK |
12432 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
12433 | old_loc->owner = NULL; | |
20874c92 | 12434 | |
876fa593 | 12435 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
12436 | } |
12437 | else | |
f431efe5 PA |
12438 | { |
12439 | old_loc->owner = NULL; | |
12440 | decref_bp_location (&old_loc); | |
12441 | } | |
20874c92 | 12442 | } |
74960c60 | 12443 | } |
1c5cfe86 | 12444 | |
348d480f PA |
12445 | /* Rescan breakpoints at the same address and section, marking the |
12446 | first one as "first" and any others as "duplicates". This is so | |
12447 | that the bpt instruction is only inserted once. If we have a | |
12448 | permanent breakpoint at the same place as BPT, make that one the | |
12449 | official one, and the rest as duplicates. Permanent breakpoints | |
12450 | are sorted first for the same address. | |
12451 | ||
12452 | Do the same for hardware watchpoints, but also considering the | |
12453 | watchpoint's type (regular/access/read) and length. */ | |
12454 | ||
12455 | bp_loc_first = NULL; | |
12456 | wp_loc_first = NULL; | |
12457 | awp_loc_first = NULL; | |
12458 | rwp_loc_first = NULL; | |
12459 | ALL_BP_LOCATIONS (loc, locp) | |
12460 | { | |
12461 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
12462 | non-NULL. */ | |
348d480f | 12463 | struct bp_location **loc_first_p; |
d3fbdd86 | 12464 | b = loc->owner; |
348d480f | 12465 | |
f8eba3c6 | 12466 | if (!should_be_inserted (loc) |
348d480f | 12467 | || !breakpoint_address_is_meaningful (b) |
1e4d1764 YQ |
12468 | /* Don't detect duplicate for tracepoint locations because they are |
12469 | never duplicated. See the comments in field `duplicate' of | |
12470 | `struct bp_location'. */ | |
348d480f | 12471 | || is_tracepoint (b)) |
b775012e LM |
12472 | { |
12473 | /* Clear the condition modification flag. */ | |
12474 | loc->condition_changed = condition_unchanged; | |
12475 | continue; | |
12476 | } | |
348d480f PA |
12477 | |
12478 | /* Permanent breakpoint should always be inserted. */ | |
12479 | if (b->enable_state == bp_permanent && ! loc->inserted) | |
12480 | internal_error (__FILE__, __LINE__, | |
12481 | _("allegedly permanent breakpoint is not " | |
12482 | "actually inserted")); | |
12483 | ||
12484 | if (b->type == bp_hardware_watchpoint) | |
12485 | loc_first_p = &wp_loc_first; | |
12486 | else if (b->type == bp_read_watchpoint) | |
12487 | loc_first_p = &rwp_loc_first; | |
12488 | else if (b->type == bp_access_watchpoint) | |
12489 | loc_first_p = &awp_loc_first; | |
12490 | else | |
12491 | loc_first_p = &bp_loc_first; | |
12492 | ||
12493 | if (*loc_first_p == NULL | |
12494 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
12495 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
12496 | { | |
12497 | *loc_first_p = loc; | |
12498 | loc->duplicate = 0; | |
b775012e LM |
12499 | |
12500 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
12501 | { | |
12502 | loc->needs_update = 1; | |
12503 | /* Clear the condition modification flag. */ | |
12504 | loc->condition_changed = condition_unchanged; | |
12505 | } | |
348d480f PA |
12506 | continue; |
12507 | } | |
12508 | ||
934709f0 PW |
12509 | |
12510 | /* This and the above ensure the invariant that the first location | |
12511 | is not duplicated, and is the inserted one. | |
12512 | All following are marked as duplicated, and are not inserted. */ | |
12513 | if (loc->inserted) | |
12514 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
12515 | loc->duplicate = 1; |
12516 | ||
b775012e LM |
12517 | /* Clear the condition modification flag. */ |
12518 | loc->condition_changed = condition_unchanged; | |
12519 | ||
348d480f PA |
12520 | if ((*loc_first_p)->owner->enable_state == bp_permanent && loc->inserted |
12521 | && b->enable_state != bp_permanent) | |
12522 | internal_error (__FILE__, __LINE__, | |
12523 | _("another breakpoint was inserted on top of " | |
12524 | "a permanent breakpoint")); | |
12525 | } | |
12526 | ||
b775012e | 12527 | if (breakpoints_always_inserted_mode () |
348d480f PA |
12528 | && (have_live_inferiors () |
12529 | || (gdbarch_has_global_breakpoints (target_gdbarch)))) | |
b775012e LM |
12530 | { |
12531 | if (should_insert) | |
12532 | insert_breakpoint_locations (); | |
12533 | else | |
12534 | { | |
12535 | /* Though should_insert is false, we may need to update conditions | |
12536 | on the target's side if it is evaluating such conditions. We | |
12537 | only update conditions for locations that are marked | |
12538 | "needs_update". */ | |
12539 | update_inserted_breakpoint_locations (); | |
12540 | } | |
12541 | } | |
348d480f | 12542 | |
1e4d1764 YQ |
12543 | if (should_insert) |
12544 | download_tracepoint_locations (); | |
12545 | ||
348d480f PA |
12546 | do_cleanups (cleanups); |
12547 | } | |
12548 | ||
12549 | void | |
12550 | breakpoint_retire_moribund (void) | |
12551 | { | |
12552 | struct bp_location *loc; | |
12553 | int ix; | |
12554 | ||
12555 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
12556 | if (--(loc->events_till_retirement) == 0) | |
12557 | { | |
12558 | decref_bp_location (&loc); | |
12559 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
12560 | --ix; | |
12561 | } | |
12562 | } | |
12563 | ||
12564 | static void | |
12565 | update_global_location_list_nothrow (int inserting) | |
12566 | { | |
bfd189b1 | 12567 | volatile struct gdb_exception e; |
348d480f PA |
12568 | |
12569 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
12570 | update_global_location_list (inserting); | |
12571 | } | |
12572 | ||
12573 | /* Clear BKP from a BPS. */ | |
12574 | ||
12575 | static void | |
12576 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12577 | { | |
12578 | bpstat bs; | |
12579 | ||
12580 | for (bs = bps; bs; bs = bs->next) | |
12581 | if (bs->breakpoint_at == bpt) | |
12582 | { | |
12583 | bs->breakpoint_at = NULL; | |
12584 | bs->old_val = NULL; | |
12585 | /* bs->commands will be freed later. */ | |
12586 | } | |
12587 | } | |
12588 | ||
12589 | /* Callback for iterate_over_threads. */ | |
12590 | static int | |
12591 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12592 | { | |
12593 | struct breakpoint *bpt = data; | |
12594 | ||
12595 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12596 | return 0; | |
12597 | } | |
12598 | ||
12599 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12600 | callbacks. */ | |
12601 | ||
12602 | static void | |
12603 | say_where (struct breakpoint *b) | |
12604 | { | |
79a45e25 | 12605 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12606 | struct value_print_options opts; |
12607 | ||
12608 | get_user_print_options (&opts); | |
12609 | ||
12610 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12611 | single string. */ | |
12612 | if (b->loc == NULL) | |
12613 | { | |
12614 | printf_filtered (_(" (%s) pending."), b->addr_string); | |
12615 | } | |
12616 | else | |
12617 | { | |
f8eba3c6 | 12618 | if (opts.addressprint || b->loc->source_file == NULL) |
348d480f PA |
12619 | { |
12620 | printf_filtered (" at "); | |
12621 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), | |
12622 | gdb_stdout); | |
12623 | } | |
f8eba3c6 TT |
12624 | if (b->loc->source_file) |
12625 | { | |
12626 | /* If there is a single location, we can print the location | |
12627 | more nicely. */ | |
12628 | if (b->loc->next == NULL) | |
12629 | printf_filtered (": file %s, line %d.", | |
12630 | b->loc->source_file, b->loc->line_number); | |
12631 | else | |
12632 | /* This is not ideal, but each location may have a | |
12633 | different file name, and this at least reflects the | |
12634 | real situation somewhat. */ | |
12635 | printf_filtered (": %s.", b->addr_string); | |
12636 | } | |
348d480f PA |
12637 | |
12638 | if (b->loc->next) | |
12639 | { | |
12640 | struct bp_location *loc = b->loc; | |
12641 | int n = 0; | |
12642 | for (; loc; loc = loc->next) | |
12643 | ++n; | |
12644 | printf_filtered (" (%d locations)", n); | |
12645 | } | |
12646 | } | |
12647 | } | |
12648 | ||
348d480f PA |
12649 | /* Default bp_location_ops methods. */ |
12650 | ||
12651 | static void | |
12652 | bp_location_dtor (struct bp_location *self) | |
12653 | { | |
12654 | xfree (self->cond); | |
b775012e LM |
12655 | if (self->cond_bytecode) |
12656 | free_agent_expr (self->cond_bytecode); | |
348d480f | 12657 | xfree (self->function_name); |
f8eba3c6 | 12658 | xfree (self->source_file); |
348d480f PA |
12659 | } |
12660 | ||
12661 | static const struct bp_location_ops bp_location_ops = | |
12662 | { | |
12663 | bp_location_dtor | |
12664 | }; | |
12665 | ||
2060206e PA |
12666 | /* Default breakpoint_ops methods all breakpoint_ops ultimately |
12667 | inherit from. */ | |
348d480f | 12668 | |
2060206e PA |
12669 | static void |
12670 | base_breakpoint_dtor (struct breakpoint *self) | |
348d480f PA |
12671 | { |
12672 | decref_counted_command_line (&self->commands); | |
12673 | xfree (self->cond_string); | |
348d480f | 12674 | xfree (self->addr_string); |
f8eba3c6 | 12675 | xfree (self->filter); |
348d480f | 12676 | xfree (self->addr_string_range_end); |
348d480f PA |
12677 | } |
12678 | ||
2060206e PA |
12679 | static struct bp_location * |
12680 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f PA |
12681 | { |
12682 | struct bp_location *loc; | |
12683 | ||
12684 | loc = XNEW (struct bp_location); | |
12685 | init_bp_location (loc, &bp_location_ops, self); | |
12686 | return loc; | |
12687 | } | |
12688 | ||
2060206e PA |
12689 | static void |
12690 | base_breakpoint_re_set (struct breakpoint *b) | |
12691 | { | |
12692 | /* Nothing to re-set. */ | |
12693 | } | |
12694 | ||
12695 | #define internal_error_pure_virtual_called() \ | |
12696 | gdb_assert_not_reached ("pure virtual function called") | |
12697 | ||
12698 | static int | |
12699 | base_breakpoint_insert_location (struct bp_location *bl) | |
12700 | { | |
12701 | internal_error_pure_virtual_called (); | |
12702 | } | |
12703 | ||
12704 | static int | |
12705 | base_breakpoint_remove_location (struct bp_location *bl) | |
12706 | { | |
12707 | internal_error_pure_virtual_called (); | |
12708 | } | |
12709 | ||
12710 | static int | |
12711 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
12712 | struct address_space *aspace, | |
09ac7c10 TT |
12713 | CORE_ADDR bp_addr, |
12714 | const struct target_waitstatus *ws) | |
2060206e PA |
12715 | { |
12716 | internal_error_pure_virtual_called (); | |
12717 | } | |
12718 | ||
12719 | static void | |
12720 | base_breakpoint_check_status (bpstat bs) | |
12721 | { | |
12722 | /* Always stop. */ | |
12723 | } | |
12724 | ||
12725 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12726 | errors. */ | |
12727 | ||
12728 | static int | |
12729 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12730 | { | |
12731 | internal_error_pure_virtual_called (); | |
12732 | } | |
12733 | ||
12734 | /* A "resources_needed" breakpoint_ops method that just internal | |
12735 | errors. */ | |
12736 | ||
12737 | static int | |
12738 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12739 | { | |
12740 | internal_error_pure_virtual_called (); | |
12741 | } | |
12742 | ||
12743 | static enum print_stop_action | |
12744 | base_breakpoint_print_it (bpstat bs) | |
12745 | { | |
12746 | internal_error_pure_virtual_called (); | |
12747 | } | |
12748 | ||
12749 | static void | |
12750 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12751 | struct ui_out *uiout) | |
12752 | { | |
12753 | /* nothing */ | |
12754 | } | |
12755 | ||
12756 | static void | |
12757 | base_breakpoint_print_mention (struct breakpoint *b) | |
12758 | { | |
12759 | internal_error_pure_virtual_called (); | |
12760 | } | |
12761 | ||
12762 | static void | |
12763 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12764 | { | |
12765 | internal_error_pure_virtual_called (); | |
12766 | } | |
12767 | ||
983af33b SDJ |
12768 | static void |
12769 | base_breakpoint_create_sals_from_address (char **arg, | |
12770 | struct linespec_result *canonical, | |
12771 | enum bptype type_wanted, | |
12772 | char *addr_start, | |
12773 | char **copy_arg) | |
12774 | { | |
12775 | internal_error_pure_virtual_called (); | |
12776 | } | |
12777 | ||
12778 | static void | |
12779 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12780 | struct linespec_result *c, | |
12781 | struct linespec_sals *lsal, | |
12782 | char *cond_string, | |
e7e0cddf | 12783 | char *extra_string, |
983af33b SDJ |
12784 | enum bptype type_wanted, |
12785 | enum bpdisp disposition, | |
12786 | int thread, | |
12787 | int task, int ignore_count, | |
12788 | const struct breakpoint_ops *o, | |
12789 | int from_tty, int enabled, | |
44f238bb | 12790 | int internal, unsigned flags) |
983af33b SDJ |
12791 | { |
12792 | internal_error_pure_virtual_called (); | |
12793 | } | |
12794 | ||
12795 | static void | |
12796 | base_breakpoint_decode_linespec (struct breakpoint *b, char **s, | |
12797 | struct symtabs_and_lines *sals) | |
12798 | { | |
12799 | internal_error_pure_virtual_called (); | |
12800 | } | |
12801 | ||
2060206e PA |
12802 | static struct breakpoint_ops base_breakpoint_ops = |
12803 | { | |
12804 | base_breakpoint_dtor, | |
12805 | base_breakpoint_allocate_location, | |
12806 | base_breakpoint_re_set, | |
12807 | base_breakpoint_insert_location, | |
12808 | base_breakpoint_remove_location, | |
12809 | base_breakpoint_breakpoint_hit, | |
12810 | base_breakpoint_check_status, | |
12811 | base_breakpoint_resources_needed, | |
12812 | base_breakpoint_works_in_software_mode, | |
12813 | base_breakpoint_print_it, | |
12814 | NULL, | |
12815 | base_breakpoint_print_one_detail, | |
12816 | base_breakpoint_print_mention, | |
983af33b SDJ |
12817 | base_breakpoint_print_recreate, |
12818 | base_breakpoint_create_sals_from_address, | |
12819 | base_breakpoint_create_breakpoints_sal, | |
12820 | base_breakpoint_decode_linespec, | |
2060206e PA |
12821 | }; |
12822 | ||
12823 | /* Default breakpoint_ops methods. */ | |
12824 | ||
12825 | static void | |
348d480f PA |
12826 | bkpt_re_set (struct breakpoint *b) |
12827 | { | |
06edf0c0 PA |
12828 | /* FIXME: is this still reachable? */ |
12829 | if (b->addr_string == NULL) | |
12830 | { | |
12831 | /* Anything without a string can't be re-set. */ | |
348d480f | 12832 | delete_breakpoint (b); |
06edf0c0 | 12833 | return; |
348d480f | 12834 | } |
06edf0c0 PA |
12835 | |
12836 | breakpoint_re_set_default (b); | |
348d480f PA |
12837 | } |
12838 | ||
2060206e | 12839 | static int |
348d480f PA |
12840 | bkpt_insert_location (struct bp_location *bl) |
12841 | { | |
12842 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12843 | return target_insert_hw_breakpoint (bl->gdbarch, | |
12844 | &bl->target_info); | |
12845 | else | |
12846 | return target_insert_breakpoint (bl->gdbarch, | |
12847 | &bl->target_info); | |
12848 | } | |
12849 | ||
2060206e | 12850 | static int |
348d480f PA |
12851 | bkpt_remove_location (struct bp_location *bl) |
12852 | { | |
12853 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12854 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12855 | else | |
12856 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info); | |
12857 | } | |
12858 | ||
2060206e | 12859 | static int |
348d480f | 12860 | bkpt_breakpoint_hit (const struct bp_location *bl, |
09ac7c10 TT |
12861 | struct address_space *aspace, CORE_ADDR bp_addr, |
12862 | const struct target_waitstatus *ws) | |
348d480f PA |
12863 | { |
12864 | struct breakpoint *b = bl->owner; | |
12865 | ||
09ac7c10 | 12866 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12867 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12868 | return 0; |
12869 | ||
348d480f PA |
12870 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12871 | aspace, bp_addr)) | |
12872 | return 0; | |
12873 | ||
12874 | if (overlay_debugging /* unmapped overlay section */ | |
12875 | && section_is_overlay (bl->section) | |
12876 | && !section_is_mapped (bl->section)) | |
12877 | return 0; | |
12878 | ||
12879 | return 1; | |
12880 | } | |
12881 | ||
2060206e | 12882 | static int |
348d480f PA |
12883 | bkpt_resources_needed (const struct bp_location *bl) |
12884 | { | |
12885 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12886 | ||
12887 | return 1; | |
12888 | } | |
12889 | ||
2060206e | 12890 | static enum print_stop_action |
348d480f PA |
12891 | bkpt_print_it (bpstat bs) |
12892 | { | |
348d480f PA |
12893 | struct breakpoint *b; |
12894 | const struct bp_location *bl; | |
001c8c33 | 12895 | int bp_temp; |
79a45e25 | 12896 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12897 | |
12898 | gdb_assert (bs->bp_location_at != NULL); | |
12899 | ||
12900 | bl = bs->bp_location_at; | |
12901 | b = bs->breakpoint_at; | |
12902 | ||
001c8c33 PA |
12903 | bp_temp = b->disposition == disp_del; |
12904 | if (bl->address != bl->requested_address) | |
12905 | breakpoint_adjustment_warning (bl->requested_address, | |
12906 | bl->address, | |
12907 | b->number, 1); | |
12908 | annotate_breakpoint (b->number); | |
12909 | if (bp_temp) | |
12910 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
12911 | else | |
12912 | ui_out_text (uiout, "\nBreakpoint "); | |
12913 | if (ui_out_is_mi_like_p (uiout)) | |
348d480f | 12914 | { |
001c8c33 PA |
12915 | ui_out_field_string (uiout, "reason", |
12916 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
12917 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
06edf0c0 | 12918 | } |
001c8c33 PA |
12919 | ui_out_field_int (uiout, "bkptno", b->number); |
12920 | ui_out_text (uiout, ", "); | |
06edf0c0 | 12921 | |
001c8c33 | 12922 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12923 | } |
12924 | ||
2060206e | 12925 | static void |
06edf0c0 PA |
12926 | bkpt_print_mention (struct breakpoint *b) |
12927 | { | |
79a45e25 | 12928 | if (ui_out_is_mi_like_p (current_uiout)) |
06edf0c0 PA |
12929 | return; |
12930 | ||
12931 | switch (b->type) | |
12932 | { | |
12933 | case bp_breakpoint: | |
12934 | case bp_gnu_ifunc_resolver: | |
12935 | if (b->disposition == disp_del) | |
12936 | printf_filtered (_("Temporary breakpoint")); | |
12937 | else | |
12938 | printf_filtered (_("Breakpoint")); | |
12939 | printf_filtered (_(" %d"), b->number); | |
12940 | if (b->type == bp_gnu_ifunc_resolver) | |
12941 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
12942 | break; | |
12943 | case bp_hardware_breakpoint: | |
12944 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
12945 | break; | |
e7e0cddf SS |
12946 | case bp_dprintf: |
12947 | printf_filtered (_("Dprintf %d"), b->number); | |
12948 | break; | |
06edf0c0 PA |
12949 | } |
12950 | ||
12951 | say_where (b); | |
12952 | } | |
12953 | ||
2060206e | 12954 | static void |
06edf0c0 PA |
12955 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
12956 | { | |
12957 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
12958 | fprintf_unfiltered (fp, "tbreak"); | |
12959 | else if (tp->type == bp_breakpoint) | |
12960 | fprintf_unfiltered (fp, "break"); | |
12961 | else if (tp->type == bp_hardware_breakpoint | |
12962 | && tp->disposition == disp_del) | |
12963 | fprintf_unfiltered (fp, "thbreak"); | |
12964 | else if (tp->type == bp_hardware_breakpoint) | |
12965 | fprintf_unfiltered (fp, "hbreak"); | |
12966 | else | |
12967 | internal_error (__FILE__, __LINE__, | |
12968 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12969 | ||
2060206e | 12970 | fprintf_unfiltered (fp, " %s", tp->addr_string); |
dd11a36c | 12971 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
12972 | } |
12973 | ||
983af33b SDJ |
12974 | static void |
12975 | bkpt_create_sals_from_address (char **arg, | |
12976 | struct linespec_result *canonical, | |
12977 | enum bptype type_wanted, | |
12978 | char *addr_start, char **copy_arg) | |
12979 | { | |
12980 | create_sals_from_address_default (arg, canonical, type_wanted, | |
12981 | addr_start, copy_arg); | |
12982 | } | |
12983 | ||
12984 | static void | |
12985 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12986 | struct linespec_result *canonical, | |
12987 | struct linespec_sals *lsal, | |
12988 | char *cond_string, | |
e7e0cddf | 12989 | char *extra_string, |
983af33b SDJ |
12990 | enum bptype type_wanted, |
12991 | enum bpdisp disposition, | |
12992 | int thread, | |
12993 | int task, int ignore_count, | |
12994 | const struct breakpoint_ops *ops, | |
12995 | int from_tty, int enabled, | |
44f238bb | 12996 | int internal, unsigned flags) |
983af33b SDJ |
12997 | { |
12998 | create_breakpoints_sal_default (gdbarch, canonical, lsal, | |
e7e0cddf SS |
12999 | cond_string, extra_string, |
13000 | type_wanted, | |
983af33b SDJ |
13001 | disposition, thread, task, |
13002 | ignore_count, ops, from_tty, | |
44f238bb | 13003 | enabled, internal, flags); |
983af33b SDJ |
13004 | } |
13005 | ||
13006 | static void | |
13007 | bkpt_decode_linespec (struct breakpoint *b, char **s, | |
13008 | struct symtabs_and_lines *sals) | |
13009 | { | |
13010 | decode_linespec_default (b, s, sals); | |
13011 | } | |
13012 | ||
06edf0c0 PA |
13013 | /* Virtual table for internal breakpoints. */ |
13014 | ||
13015 | static void | |
13016 | internal_bkpt_re_set (struct breakpoint *b) | |
13017 | { | |
13018 | switch (b->type) | |
13019 | { | |
13020 | /* Delete overlay event and longjmp master breakpoints; they | |
13021 | will be reset later by breakpoint_re_set. */ | |
13022 | case bp_overlay_event: | |
13023 | case bp_longjmp_master: | |
13024 | case bp_std_terminate_master: | |
13025 | case bp_exception_master: | |
13026 | delete_breakpoint (b); | |
13027 | break; | |
13028 | ||
13029 | /* This breakpoint is special, it's set up when the inferior | |
13030 | starts and we really don't want to touch it. */ | |
13031 | case bp_shlib_event: | |
13032 | ||
13033 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
13034 | it is set up, we do not want to touch it. */ | |
13035 | case bp_thread_event: | |
13036 | break; | |
13037 | } | |
13038 | } | |
13039 | ||
13040 | static void | |
13041 | internal_bkpt_check_status (bpstat bs) | |
13042 | { | |
a9b3a50f PA |
13043 | if (bs->breakpoint_at->type == bp_shlib_event) |
13044 | { | |
13045 | /* If requested, stop when the dynamic linker notifies GDB of | |
13046 | events. This allows the user to get control and place | |
13047 | breakpoints in initializer routines for dynamically loaded | |
13048 | objects (among other things). */ | |
13049 | bs->stop = stop_on_solib_events; | |
13050 | bs->print = stop_on_solib_events; | |
13051 | } | |
13052 | else | |
13053 | bs->stop = 0; | |
06edf0c0 PA |
13054 | } |
13055 | ||
13056 | static enum print_stop_action | |
13057 | internal_bkpt_print_it (bpstat bs) | |
13058 | { | |
36dfb11c | 13059 | struct ui_out *uiout = current_uiout; |
06edf0c0 | 13060 | struct breakpoint *b; |
06edf0c0 | 13061 | |
06edf0c0 PA |
13062 | b = bs->breakpoint_at; |
13063 | ||
06edf0c0 PA |
13064 | switch (b->type) |
13065 | { | |
348d480f PA |
13066 | case bp_shlib_event: |
13067 | /* Did we stop because the user set the stop_on_solib_events | |
13068 | variable? (If so, we report this as a generic, "Stopped due | |
13069 | to shlib event" message.) */ | |
edcc5120 | 13070 | print_solib_event (0); |
348d480f PA |
13071 | break; |
13072 | ||
13073 | case bp_thread_event: | |
13074 | /* Not sure how we will get here. | |
13075 | GDB should not stop for these breakpoints. */ | |
13076 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13077 | break; |
13078 | ||
13079 | case bp_overlay_event: | |
13080 | /* By analogy with the thread event, GDB should not stop for these. */ | |
13081 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13082 | break; |
13083 | ||
13084 | case bp_longjmp_master: | |
13085 | /* These should never be enabled. */ | |
13086 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13087 | break; |
13088 | ||
13089 | case bp_std_terminate_master: | |
13090 | /* These should never be enabled. */ | |
13091 | printf_filtered (_("std::terminate Master Breakpoint: " | |
13092 | "gdb should not stop!\n")); | |
348d480f PA |
13093 | break; |
13094 | ||
13095 | case bp_exception_master: | |
13096 | /* These should never be enabled. */ | |
13097 | printf_filtered (_("Exception Master Breakpoint: " | |
13098 | "gdb should not stop!\n")); | |
06edf0c0 PA |
13099 | break; |
13100 | } | |
13101 | ||
001c8c33 | 13102 | return PRINT_NOTHING; |
06edf0c0 PA |
13103 | } |
13104 | ||
13105 | static void | |
13106 | internal_bkpt_print_mention (struct breakpoint *b) | |
13107 | { | |
13108 | /* Nothing to mention. These breakpoints are internal. */ | |
13109 | } | |
13110 | ||
06edf0c0 PA |
13111 | /* Virtual table for momentary breakpoints */ |
13112 | ||
13113 | static void | |
13114 | momentary_bkpt_re_set (struct breakpoint *b) | |
13115 | { | |
13116 | /* Keep temporary breakpoints, which can be encountered when we step | |
13117 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
13118 | Otherwise these should have been blown away via the cleanup chain | |
13119 | or by breakpoint_init_inferior when we rerun the executable. */ | |
13120 | } | |
13121 | ||
13122 | static void | |
13123 | momentary_bkpt_check_status (bpstat bs) | |
13124 | { | |
13125 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
13126 | } | |
13127 | ||
13128 | static enum print_stop_action | |
13129 | momentary_bkpt_print_it (bpstat bs) | |
13130 | { | |
79a45e25 PA |
13131 | struct ui_out *uiout = current_uiout; |
13132 | ||
001c8c33 | 13133 | if (ui_out_is_mi_like_p (uiout)) |
06edf0c0 | 13134 | { |
001c8c33 | 13135 | struct breakpoint *b = bs->breakpoint_at; |
348d480f | 13136 | |
001c8c33 PA |
13137 | switch (b->type) |
13138 | { | |
13139 | case bp_finish: | |
13140 | ui_out_field_string | |
13141 | (uiout, "reason", | |
13142 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
13143 | break; | |
348d480f | 13144 | |
001c8c33 PA |
13145 | case bp_until: |
13146 | ui_out_field_string | |
13147 | (uiout, "reason", | |
13148 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
13149 | break; | |
13150 | } | |
348d480f PA |
13151 | } |
13152 | ||
001c8c33 | 13153 | return PRINT_UNKNOWN; |
348d480f PA |
13154 | } |
13155 | ||
06edf0c0 PA |
13156 | static void |
13157 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 13158 | { |
06edf0c0 | 13159 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
13160 | } |
13161 | ||
e2e4d78b JK |
13162 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
13163 | ||
13164 | It gets cleared already on the removal of the first one of such placed | |
13165 | breakpoints. This is OK as they get all removed altogether. */ | |
13166 | ||
13167 | static void | |
13168 | longjmp_bkpt_dtor (struct breakpoint *self) | |
13169 | { | |
13170 | struct thread_info *tp = find_thread_id (self->thread); | |
13171 | ||
13172 | if (tp) | |
13173 | tp->initiating_frame = null_frame_id; | |
13174 | ||
13175 | momentary_breakpoint_ops.dtor (self); | |
13176 | } | |
13177 | ||
55aa24fb SDJ |
13178 | /* Specific methods for probe breakpoints. */ |
13179 | ||
13180 | static int | |
13181 | bkpt_probe_insert_location (struct bp_location *bl) | |
13182 | { | |
13183 | int v = bkpt_insert_location (bl); | |
13184 | ||
13185 | if (v == 0) | |
13186 | { | |
13187 | /* The insertion was successful, now let's set the probe's semaphore | |
13188 | if needed. */ | |
13189 | bl->probe->pops->set_semaphore (bl->probe, bl->gdbarch); | |
13190 | } | |
13191 | ||
13192 | return v; | |
13193 | } | |
13194 | ||
13195 | static int | |
13196 | bkpt_probe_remove_location (struct bp_location *bl) | |
13197 | { | |
13198 | /* Let's clear the semaphore before removing the location. */ | |
13199 | bl->probe->pops->clear_semaphore (bl->probe, bl->gdbarch); | |
13200 | ||
13201 | return bkpt_remove_location (bl); | |
13202 | } | |
13203 | ||
13204 | static void | |
13205 | bkpt_probe_create_sals_from_address (char **arg, | |
13206 | struct linespec_result *canonical, | |
13207 | enum bptype type_wanted, | |
13208 | char *addr_start, char **copy_arg) | |
13209 | { | |
13210 | struct linespec_sals lsal; | |
13211 | ||
13212 | lsal.sals = parse_probes (arg, canonical); | |
13213 | ||
13214 | *copy_arg = xstrdup (canonical->addr_string); | |
13215 | lsal.canonical = xstrdup (*copy_arg); | |
13216 | ||
13217 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
13218 | } | |
13219 | ||
13220 | static void | |
13221 | bkpt_probe_decode_linespec (struct breakpoint *b, char **s, | |
13222 | struct symtabs_and_lines *sals) | |
13223 | { | |
13224 | *sals = parse_probes (s, NULL); | |
13225 | if (!sals->sals) | |
13226 | error (_("probe not found")); | |
13227 | } | |
13228 | ||
348d480f | 13229 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 13230 | |
348d480f PA |
13231 | static void |
13232 | tracepoint_re_set (struct breakpoint *b) | |
13233 | { | |
13234 | breakpoint_re_set_default (b); | |
13235 | } | |
876fa593 | 13236 | |
348d480f PA |
13237 | static int |
13238 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
09ac7c10 TT |
13239 | struct address_space *aspace, CORE_ADDR bp_addr, |
13240 | const struct target_waitstatus *ws) | |
348d480f PA |
13241 | { |
13242 | /* By definition, the inferior does not report stops at | |
13243 | tracepoints. */ | |
13244 | return 0; | |
74960c60 VP |
13245 | } |
13246 | ||
13247 | static void | |
348d480f PA |
13248 | tracepoint_print_one_detail (const struct breakpoint *self, |
13249 | struct ui_out *uiout) | |
74960c60 | 13250 | { |
d9b3f62e PA |
13251 | struct tracepoint *tp = (struct tracepoint *) self; |
13252 | if (tp->static_trace_marker_id) | |
348d480f PA |
13253 | { |
13254 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 13255 | |
348d480f PA |
13256 | ui_out_text (uiout, "\tmarker id is "); |
13257 | ui_out_field_string (uiout, "static-tracepoint-marker-string-id", | |
d9b3f62e | 13258 | tp->static_trace_marker_id); |
348d480f PA |
13259 | ui_out_text (uiout, "\n"); |
13260 | } | |
0d381245 VP |
13261 | } |
13262 | ||
a474d7c2 | 13263 | static void |
348d480f | 13264 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 13265 | { |
79a45e25 | 13266 | if (ui_out_is_mi_like_p (current_uiout)) |
348d480f | 13267 | return; |
cc59ec59 | 13268 | |
348d480f PA |
13269 | switch (b->type) |
13270 | { | |
13271 | case bp_tracepoint: | |
13272 | printf_filtered (_("Tracepoint")); | |
13273 | printf_filtered (_(" %d"), b->number); | |
13274 | break; | |
13275 | case bp_fast_tracepoint: | |
13276 | printf_filtered (_("Fast tracepoint")); | |
13277 | printf_filtered (_(" %d"), b->number); | |
13278 | break; | |
13279 | case bp_static_tracepoint: | |
13280 | printf_filtered (_("Static tracepoint")); | |
13281 | printf_filtered (_(" %d"), b->number); | |
13282 | break; | |
13283 | default: | |
13284 | internal_error (__FILE__, __LINE__, | |
13285 | _("unhandled tracepoint type %d"), (int) b->type); | |
13286 | } | |
13287 | ||
13288 | say_where (b); | |
a474d7c2 PA |
13289 | } |
13290 | ||
348d480f | 13291 | static void |
d9b3f62e | 13292 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 13293 | { |
d9b3f62e PA |
13294 | struct tracepoint *tp = (struct tracepoint *) self; |
13295 | ||
13296 | if (self->type == bp_fast_tracepoint) | |
348d480f | 13297 | fprintf_unfiltered (fp, "ftrace"); |
d9b3f62e | 13298 | if (self->type == bp_static_tracepoint) |
348d480f | 13299 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 13300 | else if (self->type == bp_tracepoint) |
348d480f PA |
13301 | fprintf_unfiltered (fp, "trace"); |
13302 | else | |
13303 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 13304 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 13305 | |
d9b3f62e PA |
13306 | fprintf_unfiltered (fp, " %s", self->addr_string); |
13307 | print_recreate_thread (self, fp); | |
13308 | ||
13309 | if (tp->pass_count) | |
13310 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
13311 | } |
13312 | ||
983af33b SDJ |
13313 | static void |
13314 | tracepoint_create_sals_from_address (char **arg, | |
13315 | struct linespec_result *canonical, | |
13316 | enum bptype type_wanted, | |
13317 | char *addr_start, char **copy_arg) | |
13318 | { | |
13319 | create_sals_from_address_default (arg, canonical, type_wanted, | |
13320 | addr_start, copy_arg); | |
13321 | } | |
13322 | ||
13323 | static void | |
13324 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13325 | struct linespec_result *canonical, | |
13326 | struct linespec_sals *lsal, | |
13327 | char *cond_string, | |
e7e0cddf | 13328 | char *extra_string, |
983af33b SDJ |
13329 | enum bptype type_wanted, |
13330 | enum bpdisp disposition, | |
13331 | int thread, | |
13332 | int task, int ignore_count, | |
13333 | const struct breakpoint_ops *ops, | |
13334 | int from_tty, int enabled, | |
44f238bb | 13335 | int internal, unsigned flags) |
983af33b SDJ |
13336 | { |
13337 | create_breakpoints_sal_default (gdbarch, canonical, lsal, | |
e7e0cddf SS |
13338 | cond_string, extra_string, |
13339 | type_wanted, | |
983af33b SDJ |
13340 | disposition, thread, task, |
13341 | ignore_count, ops, from_tty, | |
44f238bb | 13342 | enabled, internal, flags); |
983af33b SDJ |
13343 | } |
13344 | ||
13345 | static void | |
13346 | tracepoint_decode_linespec (struct breakpoint *b, char **s, | |
13347 | struct symtabs_and_lines *sals) | |
13348 | { | |
13349 | decode_linespec_default (b, s, sals); | |
13350 | } | |
13351 | ||
2060206e | 13352 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 13353 | |
55aa24fb SDJ |
13354 | /* The breakpoint_ops structure to be use on tracepoints placed in a |
13355 | static probe. */ | |
13356 | ||
13357 | static void | |
13358 | tracepoint_probe_create_sals_from_address (char **arg, | |
13359 | struct linespec_result *canonical, | |
13360 | enum bptype type_wanted, | |
13361 | char *addr_start, char **copy_arg) | |
13362 | { | |
13363 | /* We use the same method for breakpoint on probes. */ | |
13364 | bkpt_probe_create_sals_from_address (arg, canonical, type_wanted, | |
13365 | addr_start, copy_arg); | |
13366 | } | |
13367 | ||
13368 | static void | |
13369 | tracepoint_probe_decode_linespec (struct breakpoint *b, char **s, | |
13370 | struct symtabs_and_lines *sals) | |
13371 | { | |
13372 | /* We use the same method for breakpoint on probes. */ | |
13373 | bkpt_probe_decode_linespec (b, s, sals); | |
13374 | } | |
13375 | ||
13376 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
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 | } | |
80e1d417 | 13821 | ui_out_field_string (uiout, "file", sal2.symtab->filename); |
0fb4aa4b PA |
13822 | ui_out_text (uiout, ":"); |
13823 | ||
13824 | if (ui_out_is_mi_like_p (uiout)) | |
13825 | { | |
80e1d417 | 13826 | char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b PA |
13827 | |
13828 | if (fullname) | |
13829 | ui_out_field_string (uiout, "fullname", fullname); | |
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; |
0fb4aa4b | 13836 | |
f8eba3c6 | 13837 | xfree (b->loc->source_file); |
0fb4aa4b | 13838 | if (sym) |
80e1d417 | 13839 | b->loc->source_file = xstrdup (sal2.symtab->filename); |
0fb4aa4b | 13840 | else |
f8eba3c6 | 13841 | b->loc->source_file = NULL; |
0fb4aa4b PA |
13842 | |
13843 | xfree (b->addr_string); | |
13844 | b->addr_string = xstrprintf ("%s:%d", | |
80e1d417 | 13845 | sal2.symtab->filename, |
f8eba3c6 | 13846 | b->loc->line_number); |
0fb4aa4b PA |
13847 | |
13848 | /* Might be nice to check if function changed, and warn if | |
13849 | so. */ | |
13850 | ||
80e1d417 | 13851 | release_static_tracepoint_marker (tpmarker); |
0fb4aa4b PA |
13852 | } |
13853 | } | |
13854 | return sal; | |
13855 | } | |
13856 | ||
8d3788bd VP |
13857 | /* Returns 1 iff locations A and B are sufficiently same that |
13858 | we don't need to report breakpoint as changed. */ | |
13859 | ||
13860 | static int | |
13861 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
13862 | { | |
13863 | while (a && b) | |
13864 | { | |
13865 | if (a->address != b->address) | |
13866 | return 0; | |
13867 | ||
13868 | if (a->shlib_disabled != b->shlib_disabled) | |
13869 | return 0; | |
13870 | ||
13871 | if (a->enabled != b->enabled) | |
13872 | return 0; | |
13873 | ||
13874 | a = a->next; | |
13875 | b = b->next; | |
13876 | } | |
13877 | ||
13878 | if ((a == NULL) != (b == NULL)) | |
13879 | return 0; | |
13880 | ||
13881 | return 1; | |
13882 | } | |
13883 | ||
f1310107 TJB |
13884 | /* Create new breakpoint locations for B (a hardware or software breakpoint) |
13885 | based on SALS and SALS_END. If SALS_END.NELTS is not zero, then B is | |
13886 | a ranged breakpoint. */ | |
13887 | ||
0e30163f | 13888 | void |
0d381245 | 13889 | update_breakpoint_locations (struct breakpoint *b, |
f1310107 TJB |
13890 | struct symtabs_and_lines sals, |
13891 | struct symtabs_and_lines sals_end) | |
fe3f5fa8 VP |
13892 | { |
13893 | int i; | |
0d381245 VP |
13894 | struct bp_location *existing_locations = b->loc; |
13895 | ||
f8eba3c6 TT |
13896 | if (sals_end.nelts != 0 && (sals.nelts != 1 || sals_end.nelts != 1)) |
13897 | { | |
13898 | /* Ranged breakpoints have only one start location and one end | |
13899 | location. */ | |
13900 | b->enable_state = bp_disabled; | |
13901 | update_global_location_list (1); | |
13902 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " | |
13903 | "multiple locations found\n"), | |
13904 | b->number); | |
13905 | return; | |
13906 | } | |
f1310107 | 13907 | |
4a64f543 MS |
13908 | /* If there's no new locations, and all existing locations are |
13909 | pending, don't do anything. This optimizes the common case where | |
13910 | all locations are in the same shared library, that was unloaded. | |
13911 | We'd like to retain the location, so that when the library is | |
13912 | loaded again, we don't loose the enabled/disabled status of the | |
13913 | individual locations. */ | |
0d381245 | 13914 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) |
fe3f5fa8 VP |
13915 | return; |
13916 | ||
fe3f5fa8 VP |
13917 | b->loc = NULL; |
13918 | ||
0d381245 | 13919 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 13920 | { |
f8eba3c6 TT |
13921 | struct bp_location *new_loc; |
13922 | ||
13923 | switch_to_program_space_and_thread (sals.sals[i].pspace); | |
13924 | ||
13925 | new_loc = add_location_to_breakpoint (b, &(sals.sals[i])); | |
fe3f5fa8 | 13926 | |
0d381245 VP |
13927 | /* Reparse conditions, they might contain references to the |
13928 | old symtab. */ | |
13929 | if (b->cond_string != NULL) | |
13930 | { | |
f1310107 | 13931 | char *s; |
bfd189b1 | 13932 | volatile struct gdb_exception e; |
fe3f5fa8 | 13933 | |
0d381245 VP |
13934 | s = b->cond_string; |
13935 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
13936 | { | |
1bb9788d TT |
13937 | new_loc->cond = parse_exp_1 (&s, sals.sals[i].pc, |
13938 | block_for_pc (sals.sals[i].pc), | |
0d381245 VP |
13939 | 0); |
13940 | } | |
13941 | if (e.reason < 0) | |
13942 | { | |
3e43a32a MS |
13943 | warning (_("failed to reevaluate condition " |
13944 | "for breakpoint %d: %s"), | |
0d381245 VP |
13945 | b->number, e.message); |
13946 | new_loc->enabled = 0; | |
13947 | } | |
13948 | } | |
fe3f5fa8 | 13949 | |
f1310107 TJB |
13950 | if (sals_end.nelts) |
13951 | { | |
13952 | CORE_ADDR end = find_breakpoint_range_end (sals_end.sals[0]); | |
13953 | ||
13954 | new_loc->length = end - sals.sals[0].pc + 1; | |
13955 | } | |
0d381245 | 13956 | } |
fe3f5fa8 | 13957 | |
514f746b AR |
13958 | /* Update locations of permanent breakpoints. */ |
13959 | if (b->enable_state == bp_permanent) | |
13960 | make_breakpoint_permanent (b); | |
13961 | ||
4a64f543 MS |
13962 | /* If possible, carry over 'disable' status from existing |
13963 | breakpoints. */ | |
0d381245 VP |
13964 | { |
13965 | struct bp_location *e = existing_locations; | |
776592bf DE |
13966 | /* If there are multiple breakpoints with the same function name, |
13967 | e.g. for inline functions, comparing function names won't work. | |
13968 | Instead compare pc addresses; this is just a heuristic as things | |
13969 | may have moved, but in practice it gives the correct answer | |
13970 | often enough until a better solution is found. */ | |
13971 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
13972 | ||
0d381245 VP |
13973 | for (; e; e = e->next) |
13974 | { | |
13975 | if (!e->enabled && e->function_name) | |
13976 | { | |
13977 | struct bp_location *l = b->loc; | |
776592bf DE |
13978 | if (have_ambiguous_names) |
13979 | { | |
13980 | for (; l; l = l->next) | |
f1310107 | 13981 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
13982 | { |
13983 | l->enabled = 0; | |
13984 | break; | |
13985 | } | |
13986 | } | |
13987 | else | |
13988 | { | |
13989 | for (; l; l = l->next) | |
13990 | if (l->function_name | |
13991 | && strcmp (e->function_name, l->function_name) == 0) | |
13992 | { | |
13993 | l->enabled = 0; | |
13994 | break; | |
13995 | } | |
13996 | } | |
0d381245 VP |
13997 | } |
13998 | } | |
13999 | } | |
fe3f5fa8 | 14000 | |
8d3788bd VP |
14001 | if (!locations_are_equal (existing_locations, b->loc)) |
14002 | observer_notify_breakpoint_modified (b); | |
14003 | ||
b60e7edf | 14004 | update_global_location_list (1); |
fe3f5fa8 VP |
14005 | } |
14006 | ||
ef23e705 TJB |
14007 | /* Find the SaL locations corresponding to the given ADDR_STRING. |
14008 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ | |
14009 | ||
14010 | static struct symtabs_and_lines | |
14011 | addr_string_to_sals (struct breakpoint *b, char *addr_string, int *found) | |
14012 | { | |
14013 | char *s; | |
02d20e4a | 14014 | struct symtabs_and_lines sals = {0}; |
f8eba3c6 | 14015 | volatile struct gdb_exception e; |
ef23e705 | 14016 | |
983af33b | 14017 | gdb_assert (b->ops != NULL); |
ef23e705 | 14018 | s = addr_string; |
ef23e705 TJB |
14019 | |
14020 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
14021 | { | |
983af33b | 14022 | b->ops->decode_linespec (b, &s, &sals); |
ef23e705 TJB |
14023 | } |
14024 | if (e.reason < 0) | |
14025 | { | |
14026 | int not_found_and_ok = 0; | |
14027 | /* For pending breakpoints, it's expected that parsing will | |
14028 | fail until the right shared library is loaded. User has | |
14029 | already told to create pending breakpoints and don't need | |
14030 | extra messages. If breakpoint is in bp_shlib_disabled | |
14031 | state, then user already saw the message about that | |
14032 | breakpoint being disabled, and don't want to see more | |
14033 | errors. */ | |
58438ac1 | 14034 | if (e.error == NOT_FOUND_ERROR |
ef23e705 TJB |
14035 | && (b->condition_not_parsed |
14036 | || (b->loc && b->loc->shlib_disabled) | |
f8eba3c6 | 14037 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
14038 | || b->enable_state == bp_disabled)) |
14039 | not_found_and_ok = 1; | |
14040 | ||
14041 | if (!not_found_and_ok) | |
14042 | { | |
14043 | /* We surely don't want to warn about the same breakpoint | |
14044 | 10 times. One solution, implemented here, is disable | |
14045 | the breakpoint on error. Another solution would be to | |
14046 | have separate 'warning emitted' flag. Since this | |
14047 | happens only when a binary has changed, I don't know | |
14048 | which approach is better. */ | |
14049 | b->enable_state = bp_disabled; | |
14050 | throw_exception (e); | |
14051 | } | |
14052 | } | |
14053 | ||
58438ac1 | 14054 | if (e.reason == 0 || e.error != NOT_FOUND_ERROR) |
ef23e705 | 14055 | { |
f8eba3c6 | 14056 | int i; |
ef23e705 | 14057 | |
f8eba3c6 TT |
14058 | for (i = 0; i < sals.nelts; ++i) |
14059 | resolve_sal_pc (&sals.sals[i]); | |
ef23e705 TJB |
14060 | if (b->condition_not_parsed && s && s[0]) |
14061 | { | |
ed1d1739 KS |
14062 | char *cond_string, *extra_string; |
14063 | int thread, task; | |
ef23e705 TJB |
14064 | |
14065 | find_condition_and_thread (s, sals.sals[0].pc, | |
e7e0cddf SS |
14066 | &cond_string, &thread, &task, |
14067 | &extra_string); | |
ef23e705 TJB |
14068 | if (cond_string) |
14069 | b->cond_string = cond_string; | |
14070 | b->thread = thread; | |
14071 | b->task = task; | |
e7e0cddf SS |
14072 | if (extra_string) |
14073 | b->extra_string = extra_string; | |
ef23e705 TJB |
14074 | b->condition_not_parsed = 0; |
14075 | } | |
14076 | ||
983af33b | 14077 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
ef23e705 | 14078 | sals.sals[0] = update_static_tracepoint (b, sals.sals[0]); |
ef23e705 | 14079 | |
58438ac1 TT |
14080 | *found = 1; |
14081 | } | |
14082 | else | |
14083 | *found = 0; | |
ef23e705 TJB |
14084 | |
14085 | return sals; | |
14086 | } | |
14087 | ||
348d480f PA |
14088 | /* The default re_set method, for typical hardware or software |
14089 | breakpoints. Reevaluate the breakpoint and recreate its | |
14090 | locations. */ | |
14091 | ||
14092 | static void | |
28010a5d | 14093 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 TJB |
14094 | { |
14095 | int found; | |
f1310107 | 14096 | struct symtabs_and_lines sals, sals_end; |
ef23e705 | 14097 | struct symtabs_and_lines expanded = {0}; |
f1310107 | 14098 | struct symtabs_and_lines expanded_end = {0}; |
ef23e705 TJB |
14099 | |
14100 | sals = addr_string_to_sals (b, b->addr_string, &found); | |
14101 | if (found) | |
14102 | { | |
14103 | make_cleanup (xfree, sals.sals); | |
f8eba3c6 | 14104 | expanded = sals; |
ef23e705 TJB |
14105 | } |
14106 | ||
f1310107 TJB |
14107 | if (b->addr_string_range_end) |
14108 | { | |
14109 | sals_end = addr_string_to_sals (b, b->addr_string_range_end, &found); | |
14110 | if (found) | |
14111 | { | |
14112 | make_cleanup (xfree, sals_end.sals); | |
f8eba3c6 | 14113 | expanded_end = sals_end; |
f1310107 TJB |
14114 | } |
14115 | } | |
14116 | ||
14117 | update_breakpoint_locations (b, expanded, expanded_end); | |
28010a5d PA |
14118 | } |
14119 | ||
983af33b SDJ |
14120 | /* Default method for creating SALs from an address string. It basically |
14121 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
14122 | ||
14123 | static void | |
14124 | create_sals_from_address_default (char **arg, | |
14125 | struct linespec_result *canonical, | |
14126 | enum bptype type_wanted, | |
14127 | char *addr_start, char **copy_arg) | |
14128 | { | |
14129 | parse_breakpoint_sals (arg, canonical); | |
14130 | } | |
14131 | ||
14132 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
14133 | function for the `create_breakpoints_sal' method of | |
14134 | breakpoint_ops. */ | |
14135 | ||
14136 | static void | |
14137 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
14138 | struct linespec_result *canonical, | |
14139 | struct linespec_sals *lsal, | |
14140 | char *cond_string, | |
e7e0cddf | 14141 | char *extra_string, |
983af33b SDJ |
14142 | enum bptype type_wanted, |
14143 | enum bpdisp disposition, | |
14144 | int thread, | |
14145 | int task, int ignore_count, | |
14146 | const struct breakpoint_ops *ops, | |
14147 | int from_tty, int enabled, | |
44f238bb | 14148 | int internal, unsigned flags) |
983af33b SDJ |
14149 | { |
14150 | create_breakpoints_sal (gdbarch, canonical, cond_string, | |
e7e0cddf | 14151 | extra_string, |
983af33b SDJ |
14152 | type_wanted, disposition, |
14153 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 14154 | enabled, internal, flags); |
983af33b SDJ |
14155 | } |
14156 | ||
14157 | /* Decode the line represented by S by calling decode_line_full. This is the | |
14158 | default function for the `decode_linespec' method of breakpoint_ops. */ | |
14159 | ||
14160 | static void | |
14161 | decode_linespec_default (struct breakpoint *b, char **s, | |
14162 | struct symtabs_and_lines *sals) | |
14163 | { | |
14164 | struct linespec_result canonical; | |
14165 | ||
14166 | init_linespec_result (&canonical); | |
14167 | decode_line_full (s, DECODE_LINE_FUNFIRSTLINE, | |
14168 | (struct symtab *) NULL, 0, | |
14169 | &canonical, multiple_symbols_all, | |
14170 | b->filter); | |
14171 | ||
14172 | /* We should get 0 or 1 resulting SALs. */ | |
14173 | gdb_assert (VEC_length (linespec_sals, canonical.sals) < 2); | |
14174 | ||
14175 | if (VEC_length (linespec_sals, canonical.sals) > 0) | |
14176 | { | |
14177 | struct linespec_sals *lsal; | |
14178 | ||
14179 | lsal = VEC_index (linespec_sals, canonical.sals, 0); | |
14180 | *sals = lsal->sals; | |
14181 | /* Arrange it so the destructor does not free the | |
14182 | contents. */ | |
14183 | lsal->sals.sals = NULL; | |
14184 | } | |
14185 | ||
14186 | destroy_linespec_result (&canonical); | |
14187 | } | |
14188 | ||
28010a5d PA |
14189 | /* Prepare the global context for a re-set of breakpoint B. */ |
14190 | ||
14191 | static struct cleanup * | |
14192 | prepare_re_set_context (struct breakpoint *b) | |
14193 | { | |
14194 | struct cleanup *cleanups; | |
14195 | ||
14196 | input_radix = b->input_radix; | |
14197 | cleanups = save_current_space_and_thread (); | |
f8eba3c6 TT |
14198 | if (b->pspace != NULL) |
14199 | switch_to_program_space_and_thread (b->pspace); | |
28010a5d PA |
14200 | set_language (b->language); |
14201 | ||
14202 | return cleanups; | |
ef23e705 TJB |
14203 | } |
14204 | ||
c906108c SS |
14205 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
14206 | The value we return ends up being the return value from catch_errors. | |
14207 | Unused in this case. */ | |
14208 | ||
14209 | static int | |
4efb68b1 | 14210 | breakpoint_re_set_one (void *bint) |
c906108c | 14211 | { |
4a64f543 | 14212 | /* Get past catch_errs. */ |
53a5351d | 14213 | struct breakpoint *b = (struct breakpoint *) bint; |
348d480f | 14214 | struct cleanup *cleanups; |
c906108c | 14215 | |
348d480f PA |
14216 | cleanups = prepare_re_set_context (b); |
14217 | b->ops->re_set (b); | |
14218 | do_cleanups (cleanups); | |
c906108c SS |
14219 | return 0; |
14220 | } | |
14221 | ||
69de3c6a | 14222 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 14223 | void |
69de3c6a | 14224 | breakpoint_re_set (void) |
c906108c | 14225 | { |
35df4500 | 14226 | struct breakpoint *b, *b_tmp; |
c906108c SS |
14227 | enum language save_language; |
14228 | int save_input_radix; | |
6c95b8df | 14229 | struct cleanup *old_chain; |
c5aa993b | 14230 | |
c906108c SS |
14231 | save_language = current_language->la_language; |
14232 | save_input_radix = input_radix; | |
6c95b8df PA |
14233 | old_chain = save_current_program_space (); |
14234 | ||
35df4500 | 14235 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 14236 | { |
4a64f543 | 14237 | /* Format possible error msg. */ |
fe3f5fa8 | 14238 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
14239 | b->number); |
14240 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 14241 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 14242 | do_cleanups (cleanups); |
c5aa993b | 14243 | } |
c906108c SS |
14244 | set_language (save_language); |
14245 | input_radix = save_input_radix; | |
e62c965a | 14246 | |
0756c555 | 14247 | jit_breakpoint_re_set (); |
4efc6507 | 14248 | |
6c95b8df PA |
14249 | do_cleanups (old_chain); |
14250 | ||
af02033e PP |
14251 | create_overlay_event_breakpoint (); |
14252 | create_longjmp_master_breakpoint (); | |
14253 | create_std_terminate_master_breakpoint (); | |
186c406b | 14254 | create_exception_master_breakpoint (); |
1bfeeb0f JL |
14255 | |
14256 | /* While we're at it, reset the skip list too. */ | |
14257 | skip_re_set (); | |
c906108c SS |
14258 | } |
14259 | \f | |
c906108c SS |
14260 | /* Reset the thread number of this breakpoint: |
14261 | ||
14262 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 14263 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 14264 | void |
fba45db2 | 14265 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
14266 | { |
14267 | if (b->thread != -1) | |
14268 | { | |
39f77062 KB |
14269 | if (in_thread_list (inferior_ptid)) |
14270 | b->thread = pid_to_thread_id (inferior_ptid); | |
6c95b8df PA |
14271 | |
14272 | /* We're being called after following a fork. The new fork is | |
14273 | selected as current, and unless this was a vfork will have a | |
14274 | different program space from the original thread. Reset that | |
14275 | as well. */ | |
14276 | b->loc->pspace = current_program_space; | |
c906108c SS |
14277 | } |
14278 | } | |
14279 | ||
03ac34d5 MS |
14280 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14281 | If from_tty is nonzero, it prints a message to that effect, | |
14282 | which ends with a period (no newline). */ | |
14283 | ||
c906108c | 14284 | void |
fba45db2 | 14285 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 14286 | { |
52f0bd74 | 14287 | struct breakpoint *b; |
c906108c SS |
14288 | |
14289 | if (count < 0) | |
14290 | count = 0; | |
14291 | ||
14292 | ALL_BREAKPOINTS (b) | |
14293 | if (b->number == bptnum) | |
c5aa993b | 14294 | { |
d77f58be SS |
14295 | if (is_tracepoint (b)) |
14296 | { | |
14297 | if (from_tty && count != 0) | |
14298 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
14299 | bptnum); | |
14300 | return; | |
14301 | } | |
14302 | ||
c5aa993b | 14303 | b->ignore_count = count; |
221ea385 KS |
14304 | if (from_tty) |
14305 | { | |
14306 | if (count == 0) | |
3e43a32a MS |
14307 | printf_filtered (_("Will stop next time " |
14308 | "breakpoint %d is reached."), | |
221ea385 KS |
14309 | bptnum); |
14310 | else if (count == 1) | |
a3f17187 | 14311 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
14312 | bptnum); |
14313 | else | |
3e43a32a MS |
14314 | printf_filtered (_("Will ignore next %d " |
14315 | "crossings of breakpoint %d."), | |
221ea385 KS |
14316 | count, bptnum); |
14317 | } | |
c5aa993b | 14318 | breakpoints_changed (); |
8d3788bd | 14319 | observer_notify_breakpoint_modified (b); |
c5aa993b JM |
14320 | return; |
14321 | } | |
c906108c | 14322 | |
8a3fe4f8 | 14323 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
14324 | } |
14325 | ||
c906108c SS |
14326 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
14327 | ||
14328 | static void | |
fba45db2 | 14329 | ignore_command (char *args, int from_tty) |
c906108c SS |
14330 | { |
14331 | char *p = args; | |
52f0bd74 | 14332 | int num; |
c906108c SS |
14333 | |
14334 | if (p == 0) | |
e2e0b3e5 | 14335 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 14336 | |
c906108c | 14337 | num = get_number (&p); |
5c44784c | 14338 | if (num == 0) |
8a3fe4f8 | 14339 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 14340 | if (*p == 0) |
8a3fe4f8 | 14341 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
14342 | |
14343 | set_ignore_count (num, | |
14344 | longest_to_int (value_as_long (parse_and_eval (p))), | |
14345 | from_tty); | |
221ea385 KS |
14346 | if (from_tty) |
14347 | printf_filtered ("\n"); | |
c906108c SS |
14348 | } |
14349 | \f | |
14350 | /* Call FUNCTION on each of the breakpoints | |
14351 | whose numbers are given in ARGS. */ | |
14352 | ||
14353 | static void | |
95a42b64 TT |
14354 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *, |
14355 | void *), | |
14356 | void *data) | |
c906108c | 14357 | { |
52f0bd74 AC |
14358 | int num; |
14359 | struct breakpoint *b, *tmp; | |
11cf8741 | 14360 | int match; |
197f0a60 | 14361 | struct get_number_or_range_state state; |
c906108c | 14362 | |
197f0a60 | 14363 | if (args == 0) |
e2e0b3e5 | 14364 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c | 14365 | |
197f0a60 TT |
14366 | init_number_or_range (&state, args); |
14367 | ||
14368 | while (!state.finished) | |
c906108c | 14369 | { |
197f0a60 TT |
14370 | char *p = state.string; |
14371 | ||
11cf8741 | 14372 | match = 0; |
c5aa993b | 14373 | |
197f0a60 | 14374 | num = get_number_or_range (&state); |
5c44784c | 14375 | if (num == 0) |
c5aa993b | 14376 | { |
8a3fe4f8 | 14377 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
14378 | } |
14379 | else | |
14380 | { | |
14381 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
14382 | if (b->number == num) | |
14383 | { | |
11cf8741 | 14384 | match = 1; |
cdac0397 | 14385 | function (b, data); |
11cf8741 | 14386 | break; |
5c44784c | 14387 | } |
11cf8741 | 14388 | if (match == 0) |
a3f17187 | 14389 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 14390 | } |
c906108c SS |
14391 | } |
14392 | } | |
14393 | ||
0d381245 VP |
14394 | static struct bp_location * |
14395 | find_location_by_number (char *number) | |
14396 | { | |
14397 | char *dot = strchr (number, '.'); | |
14398 | char *p1; | |
14399 | int bp_num; | |
14400 | int loc_num; | |
14401 | struct breakpoint *b; | |
14402 | struct bp_location *loc; | |
14403 | ||
14404 | *dot = '\0'; | |
14405 | ||
14406 | p1 = number; | |
197f0a60 | 14407 | bp_num = get_number (&p1); |
0d381245 VP |
14408 | if (bp_num == 0) |
14409 | error (_("Bad breakpoint number '%s'"), number); | |
14410 | ||
14411 | ALL_BREAKPOINTS (b) | |
14412 | if (b->number == bp_num) | |
14413 | { | |
14414 | break; | |
14415 | } | |
14416 | ||
14417 | if (!b || b->number != bp_num) | |
14418 | error (_("Bad breakpoint number '%s'"), number); | |
14419 | ||
14420 | p1 = dot+1; | |
197f0a60 | 14421 | loc_num = get_number (&p1); |
0d381245 VP |
14422 | if (loc_num == 0) |
14423 | error (_("Bad breakpoint location number '%s'"), number); | |
14424 | ||
14425 | --loc_num; | |
14426 | loc = b->loc; | |
14427 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
14428 | ; | |
14429 | if (!loc) | |
14430 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
14431 | ||
14432 | return loc; | |
14433 | } | |
14434 | ||
14435 | ||
1900040c MS |
14436 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14437 | If from_tty is nonzero, it prints a message to that effect, | |
14438 | which ends with a period (no newline). */ | |
14439 | ||
c906108c | 14440 | void |
fba45db2 | 14441 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14442 | { |
14443 | /* Never disable a watchpoint scope breakpoint; we want to | |
14444 | hit them when we leave scope so we can delete both the | |
14445 | watchpoint and its scope breakpoint at that time. */ | |
14446 | if (bpt->type == bp_watchpoint_scope) | |
14447 | return; | |
14448 | ||
c2c6d25f | 14449 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 14450 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
14451 | return; |
14452 | ||
b5de0fa7 | 14453 | bpt->enable_state = bp_disabled; |
c906108c | 14454 | |
b775012e LM |
14455 | /* Mark breakpoint locations modified. */ |
14456 | mark_breakpoint_modified (bpt); | |
14457 | ||
d248b706 KY |
14458 | if (target_supports_enable_disable_tracepoint () |
14459 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14460 | { | |
14461 | struct bp_location *location; | |
14462 | ||
14463 | for (location = bpt->loc; location; location = location->next) | |
14464 | target_disable_tracepoint (location); | |
14465 | } | |
14466 | ||
b60e7edf | 14467 | update_global_location_list (0); |
c906108c | 14468 | |
8d3788bd | 14469 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14470 | } |
14471 | ||
51be5b68 PA |
14472 | /* A callback for iterate_over_related_breakpoints. */ |
14473 | ||
14474 | static void | |
14475 | do_disable_breakpoint (struct breakpoint *b, void *ignore) | |
14476 | { | |
14477 | disable_breakpoint (b); | |
14478 | } | |
14479 | ||
95a42b64 TT |
14480 | /* A callback for map_breakpoint_numbers that calls |
14481 | disable_breakpoint. */ | |
14482 | ||
14483 | static void | |
14484 | do_map_disable_breakpoint (struct breakpoint *b, void *ignore) | |
14485 | { | |
51be5b68 | 14486 | iterate_over_related_breakpoints (b, do_disable_breakpoint, NULL); |
95a42b64 TT |
14487 | } |
14488 | ||
c906108c | 14489 | static void |
fba45db2 | 14490 | disable_command (char *args, int from_tty) |
c906108c | 14491 | { |
c906108c | 14492 | if (args == 0) |
46c6471b PA |
14493 | { |
14494 | struct breakpoint *bpt; | |
14495 | ||
14496 | ALL_BREAKPOINTS (bpt) | |
14497 | if (user_breakpoint_p (bpt)) | |
14498 | disable_breakpoint (bpt); | |
14499 | } | |
0d381245 VP |
14500 | else if (strchr (args, '.')) |
14501 | { | |
14502 | struct bp_location *loc = find_location_by_number (args); | |
14503 | if (loc) | |
d248b706 | 14504 | { |
b775012e LM |
14505 | if (loc->enabled) |
14506 | { | |
14507 | loc->enabled = 0; | |
14508 | mark_breakpoint_location_modified (loc); | |
14509 | } | |
d248b706 KY |
14510 | if (target_supports_enable_disable_tracepoint () |
14511 | && current_trace_status ()->running && loc->owner | |
14512 | && is_tracepoint (loc->owner)) | |
14513 | target_disable_tracepoint (loc); | |
14514 | } | |
b60e7edf | 14515 | update_global_location_list (0); |
0d381245 | 14516 | } |
c906108c | 14517 | else |
95a42b64 | 14518 | map_breakpoint_numbers (args, do_map_disable_breakpoint, NULL); |
c906108c SS |
14519 | } |
14520 | ||
14521 | static void | |
816338b5 SS |
14522 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14523 | int count) | |
c906108c | 14524 | { |
afe38095 | 14525 | int target_resources_ok; |
c906108c SS |
14526 | |
14527 | if (bpt->type == bp_hardware_breakpoint) | |
14528 | { | |
14529 | int i; | |
c5aa993b | 14530 | i = hw_breakpoint_used_count (); |
53a5351d | 14531 | target_resources_ok = |
d92524f1 | 14532 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14533 | i + 1, 0); |
c906108c | 14534 | if (target_resources_ok == 0) |
8a3fe4f8 | 14535 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14536 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14537 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14538 | } |
14539 | ||
cc60f2e3 | 14540 | if (is_watchpoint (bpt)) |
c906108c | 14541 | { |
d07205c2 JK |
14542 | /* Initialize it just to avoid a GCC false warning. */ |
14543 | enum enable_state orig_enable_state = 0; | |
bfd189b1 | 14544 | volatile struct gdb_exception e; |
dde02812 ES |
14545 | |
14546 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 14547 | { |
3a5c3e22 PA |
14548 | struct watchpoint *w = (struct watchpoint *) bpt; |
14549 | ||
1e718ff1 TJB |
14550 | orig_enable_state = bpt->enable_state; |
14551 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14552 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14553 | } |
dde02812 | 14554 | if (e.reason < 0) |
c5aa993b | 14555 | { |
1e718ff1 | 14556 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14557 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14558 | bpt->number); | |
14559 | return; | |
c5aa993b | 14560 | } |
c906108c | 14561 | } |
0101ce28 | 14562 | |
b4c291bb KH |
14563 | if (bpt->enable_state != bp_permanent) |
14564 | bpt->enable_state = bp_enabled; | |
d248b706 | 14565 | |
b775012e LM |
14566 | bpt->enable_state = bp_enabled; |
14567 | ||
14568 | /* Mark breakpoint locations modified. */ | |
14569 | mark_breakpoint_modified (bpt); | |
14570 | ||
d248b706 KY |
14571 | if (target_supports_enable_disable_tracepoint () |
14572 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14573 | { | |
14574 | struct bp_location *location; | |
14575 | ||
14576 | for (location = bpt->loc; location; location = location->next) | |
14577 | target_enable_tracepoint (location); | |
14578 | } | |
14579 | ||
b4c291bb | 14580 | bpt->disposition = disposition; |
816338b5 | 14581 | bpt->enable_count = count; |
b60e7edf | 14582 | update_global_location_list (1); |
b4c291bb KH |
14583 | breakpoints_changed (); |
14584 | ||
8d3788bd | 14585 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14586 | } |
14587 | ||
fe3f5fa8 | 14588 | |
c906108c | 14589 | void |
fba45db2 | 14590 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14591 | { |
816338b5 | 14592 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14593 | } |
14594 | ||
14595 | static void | |
14596 | do_enable_breakpoint (struct breakpoint *bpt, void *arg) | |
14597 | { | |
14598 | enable_breakpoint (bpt); | |
c906108c SS |
14599 | } |
14600 | ||
95a42b64 TT |
14601 | /* A callback for map_breakpoint_numbers that calls |
14602 | enable_breakpoint. */ | |
14603 | ||
14604 | static void | |
14605 | do_map_enable_breakpoint (struct breakpoint *b, void *ignore) | |
14606 | { | |
51be5b68 | 14607 | iterate_over_related_breakpoints (b, do_enable_breakpoint, NULL); |
95a42b64 TT |
14608 | } |
14609 | ||
c906108c SS |
14610 | /* The enable command enables the specified breakpoints (or all defined |
14611 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 14612 | in stopping the inferior. */ |
c906108c | 14613 | |
c906108c | 14614 | static void |
fba45db2 | 14615 | enable_command (char *args, int from_tty) |
c906108c | 14616 | { |
c906108c | 14617 | if (args == 0) |
46c6471b PA |
14618 | { |
14619 | struct breakpoint *bpt; | |
14620 | ||
14621 | ALL_BREAKPOINTS (bpt) | |
14622 | if (user_breakpoint_p (bpt)) | |
14623 | enable_breakpoint (bpt); | |
14624 | } | |
0d381245 VP |
14625 | else if (strchr (args, '.')) |
14626 | { | |
14627 | struct bp_location *loc = find_location_by_number (args); | |
14628 | if (loc) | |
d248b706 | 14629 | { |
b775012e LM |
14630 | if (!loc->enabled) |
14631 | { | |
14632 | loc->enabled = 1; | |
14633 | mark_breakpoint_location_modified (loc); | |
14634 | } | |
d248b706 KY |
14635 | if (target_supports_enable_disable_tracepoint () |
14636 | && current_trace_status ()->running && loc->owner | |
14637 | && is_tracepoint (loc->owner)) | |
14638 | target_enable_tracepoint (loc); | |
14639 | } | |
b60e7edf | 14640 | update_global_location_list (1); |
0d381245 | 14641 | } |
c906108c | 14642 | else |
95a42b64 | 14643 | map_breakpoint_numbers (args, do_map_enable_breakpoint, NULL); |
c906108c SS |
14644 | } |
14645 | ||
816338b5 SS |
14646 | /* This struct packages up disposition data for application to multiple |
14647 | breakpoints. */ | |
14648 | ||
14649 | struct disp_data | |
14650 | { | |
14651 | enum bpdisp disp; | |
14652 | int count; | |
14653 | }; | |
14654 | ||
c906108c | 14655 | static void |
51be5b68 PA |
14656 | do_enable_breakpoint_disp (struct breakpoint *bpt, void *arg) |
14657 | { | |
816338b5 | 14658 | struct disp_data disp_data = *(struct disp_data *) arg; |
51be5b68 | 14659 | |
816338b5 | 14660 | enable_breakpoint_disp (bpt, disp_data.disp, disp_data.count); |
51be5b68 PA |
14661 | } |
14662 | ||
14663 | static void | |
14664 | do_map_enable_once_breakpoint (struct breakpoint *bpt, void *ignore) | |
c906108c | 14665 | { |
816338b5 | 14666 | struct disp_data disp = { disp_disable, 1 }; |
51be5b68 PA |
14667 | |
14668 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
14669 | } |
14670 | ||
c906108c | 14671 | static void |
fba45db2 | 14672 | enable_once_command (char *args, int from_tty) |
c906108c | 14673 | { |
51be5b68 | 14674 | map_breakpoint_numbers (args, do_map_enable_once_breakpoint, NULL); |
c906108c SS |
14675 | } |
14676 | ||
816338b5 SS |
14677 | static void |
14678 | do_map_enable_count_breakpoint (struct breakpoint *bpt, void *countptr) | |
14679 | { | |
14680 | struct disp_data disp = { disp_disable, *(int *) countptr }; | |
14681 | ||
14682 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
14683 | } | |
14684 | ||
14685 | static void | |
14686 | enable_count_command (char *args, int from_tty) | |
14687 | { | |
14688 | int count = get_number (&args); | |
14689 | ||
14690 | map_breakpoint_numbers (args, do_map_enable_count_breakpoint, &count); | |
14691 | } | |
14692 | ||
c906108c | 14693 | static void |
51be5b68 | 14694 | do_map_enable_delete_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 14695 | { |
816338b5 | 14696 | struct disp_data disp = { disp_del, 1 }; |
51be5b68 PA |
14697 | |
14698 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
14699 | } |
14700 | ||
c906108c | 14701 | static void |
fba45db2 | 14702 | enable_delete_command (char *args, int from_tty) |
c906108c | 14703 | { |
51be5b68 | 14704 | map_breakpoint_numbers (args, do_map_enable_delete_breakpoint, NULL); |
c906108c SS |
14705 | } |
14706 | \f | |
fa8d40ab JJ |
14707 | static void |
14708 | set_breakpoint_cmd (char *args, int from_tty) | |
14709 | { | |
14710 | } | |
14711 | ||
14712 | static void | |
14713 | show_breakpoint_cmd (char *args, int from_tty) | |
14714 | { | |
14715 | } | |
14716 | ||
1f3b5d1b PP |
14717 | /* Invalidate last known value of any hardware watchpoint if |
14718 | the memory which that value represents has been written to by | |
14719 | GDB itself. */ | |
14720 | ||
14721 | static void | |
14722 | invalidate_bp_value_on_memory_change (CORE_ADDR addr, int len, | |
14723 | const bfd_byte *data) | |
14724 | { | |
14725 | struct breakpoint *bp; | |
14726 | ||
14727 | ALL_BREAKPOINTS (bp) | |
14728 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 14729 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14730 | { |
3a5c3e22 | 14731 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14732 | |
3a5c3e22 PA |
14733 | if (wp->val_valid && wp->val) |
14734 | { | |
14735 | struct bp_location *loc; | |
14736 | ||
14737 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
14738 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
14739 | && loc->address + loc->length > addr | |
14740 | && addr + len > loc->address) | |
14741 | { | |
14742 | value_free (wp->val); | |
14743 | wp->val = NULL; | |
14744 | wp->val_valid = 0; | |
14745 | } | |
14746 | } | |
1f3b5d1b PP |
14747 | } |
14748 | } | |
14749 | ||
8181d85f DJ |
14750 | /* Create and insert a raw software breakpoint at PC. Return an |
14751 | identifier, which should be used to remove the breakpoint later. | |
14752 | In general, places which call this should be using something on the | |
14753 | breakpoint chain instead; this function should be eliminated | |
14754 | someday. */ | |
14755 | ||
14756 | void * | |
6c95b8df PA |
14757 | deprecated_insert_raw_breakpoint (struct gdbarch *gdbarch, |
14758 | struct address_space *aspace, CORE_ADDR pc) | |
8181d85f DJ |
14759 | { |
14760 | struct bp_target_info *bp_tgt; | |
14761 | ||
6c95b8df | 14762 | bp_tgt = XZALLOC (struct bp_target_info); |
8181d85f | 14763 | |
6c95b8df | 14764 | bp_tgt->placed_address_space = aspace; |
8181d85f | 14765 | bp_tgt->placed_address = pc; |
6c95b8df | 14766 | |
a6d9a66e | 14767 | if (target_insert_breakpoint (gdbarch, bp_tgt) != 0) |
8181d85f DJ |
14768 | { |
14769 | /* Could not insert the breakpoint. */ | |
14770 | xfree (bp_tgt); | |
14771 | return NULL; | |
14772 | } | |
14773 | ||
14774 | return bp_tgt; | |
14775 | } | |
14776 | ||
4a64f543 MS |
14777 | /* Remove a breakpoint BP inserted by |
14778 | deprecated_insert_raw_breakpoint. */ | |
8181d85f DJ |
14779 | |
14780 | int | |
a6d9a66e | 14781 | deprecated_remove_raw_breakpoint (struct gdbarch *gdbarch, void *bp) |
8181d85f DJ |
14782 | { |
14783 | struct bp_target_info *bp_tgt = bp; | |
14784 | int ret; | |
14785 | ||
a6d9a66e | 14786 | ret = target_remove_breakpoint (gdbarch, bp_tgt); |
8181d85f DJ |
14787 | xfree (bp_tgt); |
14788 | ||
14789 | return ret; | |
14790 | } | |
14791 | ||
4a64f543 MS |
14792 | /* One (or perhaps two) breakpoints used for software single |
14793 | stepping. */ | |
8181d85f DJ |
14794 | |
14795 | static void *single_step_breakpoints[2]; | |
a6d9a66e | 14796 | static struct gdbarch *single_step_gdbarch[2]; |
8181d85f DJ |
14797 | |
14798 | /* Create and insert a breakpoint for software single step. */ | |
14799 | ||
14800 | void | |
6c95b8df | 14801 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
4a64f543 MS |
14802 | struct address_space *aspace, |
14803 | CORE_ADDR next_pc) | |
8181d85f DJ |
14804 | { |
14805 | void **bpt_p; | |
14806 | ||
14807 | if (single_step_breakpoints[0] == NULL) | |
a6d9a66e UW |
14808 | { |
14809 | bpt_p = &single_step_breakpoints[0]; | |
14810 | single_step_gdbarch[0] = gdbarch; | |
14811 | } | |
8181d85f DJ |
14812 | else |
14813 | { | |
14814 | gdb_assert (single_step_breakpoints[1] == NULL); | |
14815 | bpt_p = &single_step_breakpoints[1]; | |
a6d9a66e | 14816 | single_step_gdbarch[1] = gdbarch; |
8181d85f DJ |
14817 | } |
14818 | ||
4a64f543 MS |
14819 | /* NOTE drow/2006-04-11: A future improvement to this function would |
14820 | be to only create the breakpoints once, and actually put them on | |
14821 | the breakpoint chain. That would let us use set_raw_breakpoint. | |
14822 | We could adjust the addresses each time they were needed. Doing | |
14823 | this requires corresponding changes elsewhere where single step | |
14824 | breakpoints are handled, however. So, for now, we use this. */ | |
8181d85f | 14825 | |
6c95b8df | 14826 | *bpt_p = deprecated_insert_raw_breakpoint (gdbarch, aspace, next_pc); |
8181d85f | 14827 | if (*bpt_p == NULL) |
5af949e3 UW |
14828 | error (_("Could not insert single-step breakpoint at %s"), |
14829 | paddress (gdbarch, next_pc)); | |
8181d85f DJ |
14830 | } |
14831 | ||
f02253f1 HZ |
14832 | /* Check if the breakpoints used for software single stepping |
14833 | were inserted or not. */ | |
14834 | ||
14835 | int | |
14836 | single_step_breakpoints_inserted (void) | |
14837 | { | |
14838 | return (single_step_breakpoints[0] != NULL | |
14839 | || single_step_breakpoints[1] != NULL); | |
14840 | } | |
14841 | ||
8181d85f DJ |
14842 | /* Remove and delete any breakpoints used for software single step. */ |
14843 | ||
14844 | void | |
14845 | remove_single_step_breakpoints (void) | |
14846 | { | |
14847 | gdb_assert (single_step_breakpoints[0] != NULL); | |
14848 | ||
14849 | /* See insert_single_step_breakpoint for more about this deprecated | |
14850 | call. */ | |
a6d9a66e UW |
14851 | deprecated_remove_raw_breakpoint (single_step_gdbarch[0], |
14852 | single_step_breakpoints[0]); | |
14853 | single_step_gdbarch[0] = NULL; | |
8181d85f DJ |
14854 | single_step_breakpoints[0] = NULL; |
14855 | ||
14856 | if (single_step_breakpoints[1] != NULL) | |
14857 | { | |
a6d9a66e UW |
14858 | deprecated_remove_raw_breakpoint (single_step_gdbarch[1], |
14859 | single_step_breakpoints[1]); | |
14860 | single_step_gdbarch[1] = NULL; | |
8181d85f DJ |
14861 | single_step_breakpoints[1] = NULL; |
14862 | } | |
14863 | } | |
14864 | ||
d03285ec UW |
14865 | /* Delete software single step breakpoints without removing them from |
14866 | the inferior. This is intended to be used if the inferior's address | |
14867 | space where they were inserted is already gone, e.g. after exit or | |
14868 | exec. */ | |
14869 | ||
14870 | void | |
14871 | cancel_single_step_breakpoints (void) | |
14872 | { | |
14873 | int i; | |
14874 | ||
14875 | for (i = 0; i < 2; i++) | |
14876 | if (single_step_breakpoints[i]) | |
14877 | { | |
14878 | xfree (single_step_breakpoints[i]); | |
14879 | single_step_breakpoints[i] = NULL; | |
14880 | single_step_gdbarch[i] = NULL; | |
14881 | } | |
14882 | } | |
14883 | ||
14884 | /* Detach software single-step breakpoints from INFERIOR_PTID without | |
14885 | removing them. */ | |
14886 | ||
14887 | static void | |
14888 | detach_single_step_breakpoints (void) | |
14889 | { | |
14890 | int i; | |
14891 | ||
14892 | for (i = 0; i < 2; i++) | |
14893 | if (single_step_breakpoints[i]) | |
14894 | target_remove_breakpoint (single_step_gdbarch[i], | |
14895 | single_step_breakpoints[i]); | |
14896 | } | |
14897 | ||
4a64f543 MS |
14898 | /* Check whether a software single-step breakpoint is inserted at |
14899 | PC. */ | |
1aafd4da UW |
14900 | |
14901 | static int | |
cc59ec59 MS |
14902 | single_step_breakpoint_inserted_here_p (struct address_space *aspace, |
14903 | CORE_ADDR pc) | |
1aafd4da UW |
14904 | { |
14905 | int i; | |
14906 | ||
14907 | for (i = 0; i < 2; i++) | |
14908 | { | |
14909 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
6c95b8df PA |
14910 | if (bp_tgt |
14911 | && breakpoint_address_match (bp_tgt->placed_address_space, | |
14912 | bp_tgt->placed_address, | |
14913 | aspace, pc)) | |
1aafd4da UW |
14914 | return 1; |
14915 | } | |
14916 | ||
14917 | return 0; | |
14918 | } | |
14919 | ||
a96d9b2e SDJ |
14920 | /* Returns 0 if 'bp' is NOT a syscall catchpoint, |
14921 | non-zero otherwise. */ | |
14922 | static int | |
14923 | is_syscall_catchpoint_enabled (struct breakpoint *bp) | |
14924 | { | |
14925 | if (syscall_catchpoint_p (bp) | |
14926 | && bp->enable_state != bp_disabled | |
14927 | && bp->enable_state != bp_call_disabled) | |
14928 | return 1; | |
14929 | else | |
14930 | return 0; | |
14931 | } | |
14932 | ||
14933 | int | |
14934 | catch_syscall_enabled (void) | |
14935 | { | |
fa3064dd YQ |
14936 | struct catch_syscall_inferior_data *inf_data |
14937 | = get_catch_syscall_inferior_data (current_inferior ()); | |
a96d9b2e | 14938 | |
fa3064dd | 14939 | return inf_data->total_syscalls_count != 0; |
a96d9b2e SDJ |
14940 | } |
14941 | ||
14942 | int | |
14943 | catching_syscall_number (int syscall_number) | |
14944 | { | |
14945 | struct breakpoint *bp; | |
14946 | ||
14947 | ALL_BREAKPOINTS (bp) | |
14948 | if (is_syscall_catchpoint_enabled (bp)) | |
14949 | { | |
be5c67c1 PA |
14950 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bp; |
14951 | ||
14952 | if (c->syscalls_to_be_caught) | |
a96d9b2e SDJ |
14953 | { |
14954 | int i, iter; | |
14955 | for (i = 0; | |
be5c67c1 | 14956 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
14957 | i++) |
14958 | if (syscall_number == iter) | |
14959 | return 1; | |
14960 | } | |
14961 | else | |
14962 | return 1; | |
14963 | } | |
14964 | ||
14965 | return 0; | |
14966 | } | |
14967 | ||
14968 | /* Complete syscall names. Used by "catch syscall". */ | |
49c4e619 | 14969 | static VEC (char_ptr) * |
a96d9b2e SDJ |
14970 | catch_syscall_completer (struct cmd_list_element *cmd, |
14971 | char *text, char *word) | |
14972 | { | |
14973 | const char **list = get_syscall_names (); | |
49c4e619 | 14974 | VEC (char_ptr) *retlist |
c38eea1a | 14975 | = (list == NULL) ? NULL : complete_on_enum (list, text, word); |
cc59ec59 | 14976 | |
c38eea1a MS |
14977 | xfree (list); |
14978 | return retlist; | |
a96d9b2e SDJ |
14979 | } |
14980 | ||
1042e4c0 SS |
14981 | /* Tracepoint-specific operations. */ |
14982 | ||
14983 | /* Set tracepoint count to NUM. */ | |
14984 | static void | |
14985 | set_tracepoint_count (int num) | |
14986 | { | |
14987 | tracepoint_count = num; | |
4fa62494 | 14988 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
14989 | } |
14990 | ||
70221824 | 14991 | static void |
1042e4c0 SS |
14992 | trace_command (char *arg, int from_tty) |
14993 | { | |
55aa24fb SDJ |
14994 | struct breakpoint_ops *ops; |
14995 | const char *arg_cp = arg; | |
14996 | ||
14997 | if (arg && probe_linespec_to_ops (&arg_cp)) | |
14998 | ops = &tracepoint_probe_breakpoint_ops; | |
14999 | else | |
15000 | ops = &tracepoint_breakpoint_ops; | |
15001 | ||
8cdf0e15 VP |
15002 | if (create_breakpoint (get_current_arch (), |
15003 | arg, | |
e7e0cddf | 15004 | NULL, 0, NULL, 1 /* parse arg */, |
0fb4aa4b PA |
15005 | 0 /* tempflag */, |
15006 | bp_tracepoint /* type_wanted */, | |
8cdf0e15 VP |
15007 | 0 /* Ignore count */, |
15008 | pending_break_support, | |
55aa24fb | 15009 | ops, |
8cdf0e15 | 15010 | from_tty, |
84f4c1fe | 15011 | 1 /* enabled */, |
44f238bb | 15012 | 0 /* internal */, 0)) |
fd9b8c24 | 15013 | set_tracepoint_count (breakpoint_count); |
1042e4c0 SS |
15014 | } |
15015 | ||
70221824 | 15016 | static void |
7a697b8d SS |
15017 | ftrace_command (char *arg, int from_tty) |
15018 | { | |
8cdf0e15 VP |
15019 | if (create_breakpoint (get_current_arch (), |
15020 | arg, | |
e7e0cddf | 15021 | NULL, 0, NULL, 1 /* parse arg */, |
0fb4aa4b PA |
15022 | 0 /* tempflag */, |
15023 | bp_fast_tracepoint /* type_wanted */, | |
15024 | 0 /* Ignore count */, | |
15025 | pending_break_support, | |
348d480f | 15026 | &tracepoint_breakpoint_ops, |
0fb4aa4b | 15027 | from_tty, |
84f4c1fe | 15028 | 1 /* enabled */, |
44f238bb | 15029 | 0 /* internal */, 0)) |
0fb4aa4b PA |
15030 | set_tracepoint_count (breakpoint_count); |
15031 | } | |
15032 | ||
15033 | /* strace command implementation. Creates a static tracepoint. */ | |
15034 | ||
70221824 | 15035 | static void |
0fb4aa4b PA |
15036 | strace_command (char *arg, int from_tty) |
15037 | { | |
983af33b SDJ |
15038 | struct breakpoint_ops *ops; |
15039 | ||
15040 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
15041 | or with a normal static tracepoint. */ | |
15042 | if (arg && strncmp (arg, "-m", 2) == 0 && isspace (arg[2])) | |
15043 | ops = &strace_marker_breakpoint_ops; | |
15044 | else | |
15045 | ops = &tracepoint_breakpoint_ops; | |
15046 | ||
0fb4aa4b PA |
15047 | if (create_breakpoint (get_current_arch (), |
15048 | arg, | |
e7e0cddf | 15049 | NULL, 0, NULL, 1 /* parse arg */, |
0fb4aa4b PA |
15050 | 0 /* tempflag */, |
15051 | bp_static_tracepoint /* type_wanted */, | |
8cdf0e15 VP |
15052 | 0 /* Ignore count */, |
15053 | pending_break_support, | |
983af33b | 15054 | ops, |
8cdf0e15 | 15055 | from_tty, |
84f4c1fe | 15056 | 1 /* enabled */, |
44f238bb | 15057 | 0 /* internal */, 0)) |
fd9b8c24 | 15058 | set_tracepoint_count (breakpoint_count); |
7a697b8d SS |
15059 | } |
15060 | ||
409873ef SS |
15061 | /* Set up a fake reader function that gets command lines from a linked |
15062 | list that was acquired during tracepoint uploading. */ | |
15063 | ||
15064 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 15065 | static int next_cmd; |
409873ef SS |
15066 | |
15067 | static char * | |
15068 | read_uploaded_action (void) | |
15069 | { | |
15070 | char *rslt; | |
15071 | ||
3149d8c1 | 15072 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 15073 | |
3149d8c1 | 15074 | next_cmd++; |
409873ef SS |
15075 | |
15076 | return rslt; | |
15077 | } | |
15078 | ||
00bf0b85 SS |
15079 | /* Given information about a tracepoint as recorded on a target (which |
15080 | can be either a live system or a trace file), attempt to create an | |
15081 | equivalent GDB tracepoint. This is not a reliable process, since | |
15082 | the target does not necessarily have all the information used when | |
15083 | the tracepoint was originally defined. */ | |
15084 | ||
d9b3f62e | 15085 | struct tracepoint * |
00bf0b85 | 15086 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 15087 | { |
409873ef | 15088 | char *addr_str, small_buf[100]; |
d9b3f62e | 15089 | struct tracepoint *tp; |
fd9b8c24 | 15090 | |
409873ef SS |
15091 | if (utp->at_string) |
15092 | addr_str = utp->at_string; | |
15093 | else | |
15094 | { | |
15095 | /* In the absence of a source location, fall back to raw | |
15096 | address. Since there is no way to confirm that the address | |
15097 | means the same thing as when the trace was started, warn the | |
15098 | user. */ | |
3e43a32a MS |
15099 | warning (_("Uploaded tracepoint %d has no " |
15100 | "source location, using raw address"), | |
409873ef SS |
15101 | utp->number); |
15102 | sprintf (small_buf, "*%s", hex_string (utp->addr)); | |
15103 | addr_str = small_buf; | |
15104 | } | |
15105 | ||
15106 | /* There's not much we can do with a sequence of bytecodes. */ | |
15107 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
15108 | warning (_("Uploaded tracepoint %d condition " |
15109 | "has no source form, ignoring it"), | |
409873ef | 15110 | utp->number); |
d5551862 | 15111 | |
8cdf0e15 | 15112 | if (!create_breakpoint (get_current_arch (), |
409873ef | 15113 | addr_str, |
e7e0cddf SS |
15114 | utp->cond_string, -1, NULL, |
15115 | 0 /* parse cond/thread */, | |
8cdf0e15 | 15116 | 0 /* tempflag */, |
0fb4aa4b | 15117 | utp->type /* type_wanted */, |
8cdf0e15 VP |
15118 | 0 /* Ignore count */, |
15119 | pending_break_support, | |
348d480f | 15120 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 15121 | 0 /* from_tty */, |
84f4c1fe | 15122 | utp->enabled /* enabled */, |
44f238bb PA |
15123 | 0 /* internal */, |
15124 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
fd9b8c24 PA |
15125 | return NULL; |
15126 | ||
00bf0b85 SS |
15127 | set_tracepoint_count (breakpoint_count); |
15128 | ||
409873ef | 15129 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
15130 | tp = get_tracepoint (tracepoint_count); |
15131 | gdb_assert (tp != NULL); | |
d5551862 | 15132 | |
00bf0b85 SS |
15133 | if (utp->pass > 0) |
15134 | { | |
d9b3f62e | 15135 | sprintf (small_buf, "%d %d", utp->pass, tp->base.number); |
00bf0b85 | 15136 | |
409873ef | 15137 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
15138 | } |
15139 | ||
409873ef SS |
15140 | /* If we have uploaded versions of the original commands, set up a |
15141 | special-purpose "reader" function and call the usual command line | |
15142 | reader, then pass the result to the breakpoint command-setting | |
15143 | function. */ | |
3149d8c1 | 15144 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 15145 | { |
409873ef | 15146 | struct command_line *cmd_list; |
00bf0b85 | 15147 | |
409873ef | 15148 | this_utp = utp; |
3149d8c1 | 15149 | next_cmd = 0; |
d5551862 | 15150 | |
409873ef SS |
15151 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
15152 | ||
d9b3f62e | 15153 | breakpoint_set_commands (&tp->base, cmd_list); |
00bf0b85 | 15154 | } |
3149d8c1 SS |
15155 | else if (!VEC_empty (char_ptr, utp->actions) |
15156 | || !VEC_empty (char_ptr, utp->step_actions)) | |
3e43a32a MS |
15157 | warning (_("Uploaded tracepoint %d actions " |
15158 | "have no source form, ignoring them"), | |
409873ef | 15159 | utp->number); |
00bf0b85 | 15160 | |
f196051f SS |
15161 | /* Copy any status information that might be available. */ |
15162 | tp->base.hit_count = utp->hit_count; | |
15163 | tp->traceframe_usage = utp->traceframe_usage; | |
15164 | ||
00bf0b85 | 15165 | return tp; |
d9b3f62e | 15166 | } |
00bf0b85 | 15167 | |
1042e4c0 SS |
15168 | /* Print information on tracepoint number TPNUM_EXP, or all if |
15169 | omitted. */ | |
15170 | ||
15171 | static void | |
e5a67952 | 15172 | tracepoints_info (char *args, int from_tty) |
1042e4c0 | 15173 | { |
79a45e25 | 15174 | struct ui_out *uiout = current_uiout; |
e5a67952 | 15175 | int num_printed; |
1042e4c0 | 15176 | |
e5a67952 | 15177 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
15178 | |
15179 | if (num_printed == 0) | |
1042e4c0 | 15180 | { |
e5a67952 | 15181 | if (args == NULL || *args == '\0') |
d77f58be SS |
15182 | ui_out_message (uiout, 0, "No tracepoints.\n"); |
15183 | else | |
e5a67952 | 15184 | ui_out_message (uiout, 0, "No tracepoint matching '%s'.\n", args); |
1042e4c0 | 15185 | } |
ad443146 SS |
15186 | |
15187 | default_collect_info (); | |
1042e4c0 SS |
15188 | } |
15189 | ||
4a64f543 | 15190 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
15191 | Not supported by all targets. */ |
15192 | static void | |
15193 | enable_trace_command (char *args, int from_tty) | |
15194 | { | |
15195 | enable_command (args, from_tty); | |
15196 | } | |
15197 | ||
4a64f543 | 15198 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
15199 | Not supported by all targets. */ |
15200 | static void | |
15201 | disable_trace_command (char *args, int from_tty) | |
15202 | { | |
15203 | disable_command (args, from_tty); | |
15204 | } | |
15205 | ||
4a64f543 | 15206 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 SS |
15207 | static void |
15208 | delete_trace_command (char *arg, int from_tty) | |
15209 | { | |
35df4500 | 15210 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
15211 | |
15212 | dont_repeat (); | |
15213 | ||
15214 | if (arg == 0) | |
15215 | { | |
15216 | int breaks_to_delete = 0; | |
15217 | ||
15218 | /* Delete all breakpoints if no argument. | |
15219 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
15220 | have to be deleted with an explicit breakpoint number |
15221 | argument. */ | |
1042e4c0 | 15222 | ALL_TRACEPOINTS (b) |
46c6471b | 15223 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
15224 | { |
15225 | breaks_to_delete = 1; | |
15226 | break; | |
15227 | } | |
1042e4c0 SS |
15228 | |
15229 | /* Ask user only if there are some breakpoints to delete. */ | |
15230 | if (!from_tty | |
15231 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
15232 | { | |
35df4500 | 15233 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 15234 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 15235 | delete_breakpoint (b); |
1042e4c0 SS |
15236 | } |
15237 | } | |
15238 | else | |
51be5b68 | 15239 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
1042e4c0 SS |
15240 | } |
15241 | ||
197f0a60 TT |
15242 | /* Helper function for trace_pass_command. */ |
15243 | ||
15244 | static void | |
d9b3f62e | 15245 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 15246 | { |
d9b3f62e PA |
15247 | tp->pass_count = count; |
15248 | observer_notify_tracepoint_modified (tp->base.number); | |
197f0a60 TT |
15249 | if (from_tty) |
15250 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
d9b3f62e | 15251 | tp->base.number, count); |
197f0a60 TT |
15252 | } |
15253 | ||
1042e4c0 SS |
15254 | /* Set passcount for tracepoint. |
15255 | ||
15256 | First command argument is passcount, second is tracepoint number. | |
15257 | If tracepoint number omitted, apply to most recently defined. | |
15258 | Also accepts special argument "all". */ | |
15259 | ||
15260 | static void | |
15261 | trace_pass_command (char *args, int from_tty) | |
15262 | { | |
d9b3f62e | 15263 | struct tracepoint *t1; |
1042e4c0 | 15264 | unsigned int count; |
1042e4c0 SS |
15265 | |
15266 | if (args == 0 || *args == 0) | |
3e43a32a MS |
15267 | error (_("passcount command requires an " |
15268 | "argument (count + optional TP num)")); | |
1042e4c0 | 15269 | |
4a64f543 | 15270 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 SS |
15271 | |
15272 | while (*args && isspace ((int) *args)) | |
15273 | args++; | |
15274 | ||
15275 | if (*args && strncasecmp (args, "all", 3) == 0) | |
15276 | { | |
d9b3f62e PA |
15277 | struct breakpoint *b; |
15278 | ||
1042e4c0 | 15279 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
15280 | if (*args) |
15281 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 15282 | |
d9b3f62e | 15283 | ALL_TRACEPOINTS (b) |
197f0a60 | 15284 | { |
d9b3f62e | 15285 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
15286 | trace_pass_set_count (t1, count, from_tty); |
15287 | } | |
15288 | } | |
15289 | else if (*args == '\0') | |
1042e4c0 | 15290 | { |
197f0a60 | 15291 | t1 = get_tracepoint_by_number (&args, NULL, 1); |
1042e4c0 | 15292 | if (t1) |
197f0a60 TT |
15293 | trace_pass_set_count (t1, count, from_tty); |
15294 | } | |
15295 | else | |
15296 | { | |
15297 | struct get_number_or_range_state state; | |
15298 | ||
15299 | init_number_or_range (&state, args); | |
15300 | while (!state.finished) | |
1042e4c0 | 15301 | { |
197f0a60 TT |
15302 | t1 = get_tracepoint_by_number (&args, &state, 1); |
15303 | if (t1) | |
15304 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
15305 | } |
15306 | } | |
1042e4c0 SS |
15307 | } |
15308 | ||
d9b3f62e | 15309 | struct tracepoint * |
1042e4c0 SS |
15310 | get_tracepoint (int num) |
15311 | { | |
15312 | struct breakpoint *t; | |
15313 | ||
15314 | ALL_TRACEPOINTS (t) | |
15315 | if (t->number == num) | |
d9b3f62e | 15316 | return (struct tracepoint *) t; |
1042e4c0 SS |
15317 | |
15318 | return NULL; | |
15319 | } | |
15320 | ||
d5551862 SS |
15321 | /* Find the tracepoint with the given target-side number (which may be |
15322 | different from the tracepoint number after disconnecting and | |
15323 | reconnecting). */ | |
15324 | ||
d9b3f62e | 15325 | struct tracepoint * |
d5551862 SS |
15326 | get_tracepoint_by_number_on_target (int num) |
15327 | { | |
d9b3f62e | 15328 | struct breakpoint *b; |
d5551862 | 15329 | |
d9b3f62e PA |
15330 | ALL_TRACEPOINTS (b) |
15331 | { | |
15332 | struct tracepoint *t = (struct tracepoint *) b; | |
15333 | ||
15334 | if (t->number_on_target == num) | |
15335 | return t; | |
15336 | } | |
d5551862 SS |
15337 | |
15338 | return NULL; | |
15339 | } | |
15340 | ||
1042e4c0 | 15341 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 TT |
15342 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
15343 | If OPTIONAL_P is true, then if the argument is missing, the most | |
1042e4c0 | 15344 | recent tracepoint (tracepoint_count) is returned. */ |
d9b3f62e | 15345 | struct tracepoint * |
197f0a60 TT |
15346 | get_tracepoint_by_number (char **arg, |
15347 | struct get_number_or_range_state *state, | |
15348 | int optional_p) | |
1042e4c0 SS |
15349 | { |
15350 | extern int tracepoint_count; | |
15351 | struct breakpoint *t; | |
15352 | int tpnum; | |
15353 | char *instring = arg == NULL ? NULL : *arg; | |
15354 | ||
197f0a60 TT |
15355 | if (state) |
15356 | { | |
15357 | gdb_assert (!state->finished); | |
15358 | tpnum = get_number_or_range (state); | |
15359 | } | |
15360 | else if (arg == NULL || *arg == NULL || ! **arg) | |
1042e4c0 SS |
15361 | { |
15362 | if (optional_p) | |
15363 | tpnum = tracepoint_count; | |
15364 | else | |
15365 | error_no_arg (_("tracepoint number")); | |
15366 | } | |
15367 | else | |
197f0a60 | 15368 | tpnum = get_number (arg); |
1042e4c0 SS |
15369 | |
15370 | if (tpnum <= 0) | |
15371 | { | |
15372 | if (instring && *instring) | |
15373 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
15374 | instring); | |
15375 | else | |
3e43a32a MS |
15376 | printf_filtered (_("Tracepoint argument missing " |
15377 | "and no previous tracepoint\n")); | |
1042e4c0 SS |
15378 | return NULL; |
15379 | } | |
15380 | ||
15381 | ALL_TRACEPOINTS (t) | |
15382 | if (t->number == tpnum) | |
15383 | { | |
d9b3f62e | 15384 | return (struct tracepoint *) t; |
1042e4c0 SS |
15385 | } |
15386 | ||
1042e4c0 SS |
15387 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
15388 | return NULL; | |
15389 | } | |
15390 | ||
d9b3f62e PA |
15391 | void |
15392 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
15393 | { | |
15394 | if (b->thread != -1) | |
15395 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
15396 | ||
15397 | if (b->task != 0) | |
15398 | fprintf_unfiltered (fp, " task %d", b->task); | |
15399 | ||
15400 | fprintf_unfiltered (fp, "\n"); | |
15401 | } | |
15402 | ||
6149aea9 PA |
15403 | /* Save information on user settable breakpoints (watchpoints, etc) to |
15404 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
15405 | on each breakpoint and only include the ones for which it returns | |
15406 | non-zero. */ | |
15407 | ||
1042e4c0 | 15408 | static void |
6149aea9 PA |
15409 | save_breakpoints (char *filename, int from_tty, |
15410 | int (*filter) (const struct breakpoint *)) | |
1042e4c0 SS |
15411 | { |
15412 | struct breakpoint *tp; | |
6149aea9 | 15413 | int any = 0; |
a7bdde9e | 15414 | char *pathname; |
1042e4c0 | 15415 | struct cleanup *cleanup; |
a7bdde9e | 15416 | struct ui_file *fp; |
6149aea9 | 15417 | int extra_trace_bits = 0; |
1042e4c0 | 15418 | |
6149aea9 PA |
15419 | if (filename == 0 || *filename == 0) |
15420 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
15421 | |
15422 | /* See if we have anything to save. */ | |
6149aea9 | 15423 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15424 | { |
6149aea9 | 15425 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15426 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
15427 | continue; |
15428 | ||
15429 | /* If we have a filter, only save the breakpoints it accepts. */ | |
15430 | if (filter && !filter (tp)) | |
15431 | continue; | |
15432 | ||
15433 | any = 1; | |
15434 | ||
15435 | if (is_tracepoint (tp)) | |
15436 | { | |
15437 | extra_trace_bits = 1; | |
15438 | ||
15439 | /* We can stop searching. */ | |
15440 | break; | |
15441 | } | |
1042e4c0 | 15442 | } |
6149aea9 PA |
15443 | |
15444 | if (!any) | |
1042e4c0 | 15445 | { |
6149aea9 | 15446 | warning (_("Nothing to save.")); |
1042e4c0 SS |
15447 | return; |
15448 | } | |
15449 | ||
6149aea9 | 15450 | pathname = tilde_expand (filename); |
1042e4c0 | 15451 | cleanup = make_cleanup (xfree, pathname); |
a7bdde9e | 15452 | fp = gdb_fopen (pathname, "w"); |
059fb39f | 15453 | if (!fp) |
6149aea9 PA |
15454 | error (_("Unable to open file '%s' for saving (%s)"), |
15455 | filename, safe_strerror (errno)); | |
a7bdde9e | 15456 | make_cleanup_ui_file_delete (fp); |
8bf6485c | 15457 | |
6149aea9 PA |
15458 | if (extra_trace_bits) |
15459 | save_trace_state_variables (fp); | |
8bf6485c | 15460 | |
6149aea9 | 15461 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15462 | { |
6149aea9 | 15463 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15464 | if (!user_breakpoint_p (tp)) |
6149aea9 | 15465 | continue; |
8bf6485c | 15466 | |
6149aea9 PA |
15467 | /* If we have a filter, only save the breakpoints it accepts. */ |
15468 | if (filter && !filter (tp)) | |
15469 | continue; | |
15470 | ||
348d480f | 15471 | tp->ops->print_recreate (tp, fp); |
1042e4c0 | 15472 | |
6149aea9 PA |
15473 | /* Note, we can't rely on tp->number for anything, as we can't |
15474 | assume the recreated breakpoint numbers will match. Use $bpnum | |
15475 | instead. */ | |
15476 | ||
15477 | if (tp->cond_string) | |
15478 | fprintf_unfiltered (fp, " condition $bpnum %s\n", tp->cond_string); | |
15479 | ||
15480 | if (tp->ignore_count) | |
15481 | fprintf_unfiltered (fp, " ignore $bpnum %d\n", tp->ignore_count); | |
15482 | ||
a7bdde9e | 15483 | if (tp->commands) |
1042e4c0 | 15484 | { |
a7bdde9e VP |
15485 | volatile struct gdb_exception ex; |
15486 | ||
6149aea9 | 15487 | fprintf_unfiltered (fp, " commands\n"); |
a7bdde9e | 15488 | |
79a45e25 | 15489 | ui_out_redirect (current_uiout, fp); |
14dba4b4 | 15490 | TRY_CATCH (ex, RETURN_MASK_ALL) |
1042e4c0 | 15491 | { |
79a45e25 | 15492 | print_command_lines (current_uiout, tp->commands->commands, 2); |
a7bdde9e | 15493 | } |
79a45e25 | 15494 | ui_out_redirect (current_uiout, NULL); |
1042e4c0 | 15495 | |
a7bdde9e VP |
15496 | if (ex.reason < 0) |
15497 | throw_exception (ex); | |
1042e4c0 | 15498 | |
a7bdde9e | 15499 | fprintf_unfiltered (fp, " end\n"); |
1042e4c0 | 15500 | } |
6149aea9 PA |
15501 | |
15502 | if (tp->enable_state == bp_disabled) | |
15503 | fprintf_unfiltered (fp, "disable\n"); | |
15504 | ||
15505 | /* If this is a multi-location breakpoint, check if the locations | |
15506 | should be individually disabled. Watchpoint locations are | |
15507 | special, and not user visible. */ | |
15508 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15509 | { | |
15510 | struct bp_location *loc; | |
15511 | int n = 1; | |
15512 | ||
15513 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
15514 | if (!loc->enabled) | |
15515 | fprintf_unfiltered (fp, "disable $bpnum.%d\n", n); | |
15516 | } | |
1042e4c0 | 15517 | } |
8bf6485c | 15518 | |
6149aea9 | 15519 | if (extra_trace_bits && *default_collect) |
8bf6485c SS |
15520 | fprintf_unfiltered (fp, "set default-collect %s\n", default_collect); |
15521 | ||
1042e4c0 SS |
15522 | do_cleanups (cleanup); |
15523 | if (from_tty) | |
6149aea9 PA |
15524 | printf_filtered (_("Saved to file '%s'.\n"), filename); |
15525 | } | |
15526 | ||
15527 | /* The `save breakpoints' command. */ | |
15528 | ||
15529 | static void | |
15530 | save_breakpoints_command (char *args, int from_tty) | |
15531 | { | |
15532 | save_breakpoints (args, from_tty, NULL); | |
15533 | } | |
15534 | ||
15535 | /* The `save tracepoints' command. */ | |
15536 | ||
15537 | static void | |
15538 | save_tracepoints_command (char *args, int from_tty) | |
15539 | { | |
15540 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15541 | } |
15542 | ||
15543 | /* Create a vector of all tracepoints. */ | |
15544 | ||
15545 | VEC(breakpoint_p) * | |
eeae04df | 15546 | all_tracepoints (void) |
1042e4c0 SS |
15547 | { |
15548 | VEC(breakpoint_p) *tp_vec = 0; | |
15549 | struct breakpoint *tp; | |
15550 | ||
15551 | ALL_TRACEPOINTS (tp) | |
15552 | { | |
15553 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
15554 | } | |
15555 | ||
15556 | return tp_vec; | |
15557 | } | |
15558 | ||
c906108c | 15559 | \f |
4a64f543 MS |
15560 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15561 | commands. It is defined as a macro to prevent duplication. | |
15562 | COMMAND should be a string constant containing the name of the | |
15563 | command. */ | |
31e2b00f | 15564 | #define BREAK_ARGS_HELP(command) \ |
fb7b5af4 SDJ |
15565 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\ |
15566 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ | |
15567 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
15568 | guessed probe type) or `-probe-stap' (for a SystemTap probe).\n\ | |
31e2b00f AS |
15569 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ |
15570 | If a line number is specified, break at start of code for that line.\n\ | |
15571 | If a function is specified, break at start of code for that function.\n\ | |
15572 | If an address is specified, break at that exact address.\n\ | |
dc10affe PA |
15573 | With no LOCATION, uses current execution address of the selected\n\ |
15574 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15575 | \n\ |
15576 | THREADNUM is the number from \"info threads\".\n\ | |
15577 | CONDITION is a boolean expression.\n\ | |
15578 | \n\ | |
d41c0fc8 PA |
15579 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15580 | conditions are different.\n\ | |
31e2b00f AS |
15581 | \n\ |
15582 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15583 | ||
44feb3ce TT |
15584 | /* List of subcommands for "catch". */ |
15585 | static struct cmd_list_element *catch_cmdlist; | |
15586 | ||
15587 | /* List of subcommands for "tcatch". */ | |
15588 | static struct cmd_list_element *tcatch_cmdlist; | |
15589 | ||
9ac4176b | 15590 | void |
44feb3ce TT |
15591 | add_catch_command (char *name, char *docstring, |
15592 | void (*sfunc) (char *args, int from_tty, | |
15593 | struct cmd_list_element *command), | |
625e8578 | 15594 | completer_ftype *completer, |
44feb3ce TT |
15595 | void *user_data_catch, |
15596 | void *user_data_tcatch) | |
15597 | { | |
15598 | struct cmd_list_element *command; | |
15599 | ||
15600 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
15601 | &catch_cmdlist); | |
15602 | set_cmd_sfunc (command, sfunc); | |
15603 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15604 | set_cmd_completer (command, completer); |
44feb3ce TT |
15605 | |
15606 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
15607 | &tcatch_cmdlist); | |
15608 | set_cmd_sfunc (command, sfunc); | |
15609 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15610 | set_cmd_completer (command, completer); |
44feb3ce TT |
15611 | } |
15612 | ||
6c95b8df | 15613 | static void |
a79b8f6e | 15614 | clear_syscall_counts (struct inferior *inf) |
6c95b8df | 15615 | { |
fa3064dd YQ |
15616 | struct catch_syscall_inferior_data *inf_data |
15617 | = get_catch_syscall_inferior_data (inf); | |
15618 | ||
15619 | inf_data->total_syscalls_count = 0; | |
15620 | inf_data->any_syscall_count = 0; | |
15621 | VEC_free (int, inf_data->syscalls_counts); | |
6c95b8df PA |
15622 | } |
15623 | ||
6149aea9 PA |
15624 | static void |
15625 | save_command (char *arg, int from_tty) | |
15626 | { | |
3e43a32a MS |
15627 | printf_unfiltered (_("\"save\" must be followed by " |
15628 | "the name of a save subcommand.\n")); | |
6149aea9 PA |
15629 | help_list (save_cmdlist, "save ", -1, gdb_stdout); |
15630 | } | |
15631 | ||
84f4c1fe PM |
15632 | struct breakpoint * |
15633 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
15634 | void *data) | |
15635 | { | |
35df4500 | 15636 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15637 | |
35df4500 | 15638 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
15639 | { |
15640 | if ((*callback) (b, data)) | |
15641 | return b; | |
15642 | } | |
15643 | ||
15644 | return NULL; | |
15645 | } | |
15646 | ||
0574c78f GB |
15647 | /* Zero if any of the breakpoint's locations could be a location where |
15648 | functions have been inlined, nonzero otherwise. */ | |
15649 | ||
15650 | static int | |
15651 | is_non_inline_function (struct breakpoint *b) | |
15652 | { | |
15653 | /* The shared library event breakpoint is set on the address of a | |
15654 | non-inline function. */ | |
15655 | if (b->type == bp_shlib_event) | |
15656 | return 1; | |
15657 | ||
15658 | return 0; | |
15659 | } | |
15660 | ||
15661 | /* Nonzero if the specified PC cannot be a location where functions | |
15662 | have been inlined. */ | |
15663 | ||
15664 | int | |
09ac7c10 TT |
15665 | pc_at_non_inline_function (struct address_space *aspace, CORE_ADDR pc, |
15666 | const struct target_waitstatus *ws) | |
0574c78f GB |
15667 | { |
15668 | struct breakpoint *b; | |
15669 | struct bp_location *bl; | |
15670 | ||
15671 | ALL_BREAKPOINTS (b) | |
15672 | { | |
15673 | if (!is_non_inline_function (b)) | |
15674 | continue; | |
15675 | ||
15676 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15677 | { | |
15678 | if (!bl->shlib_disabled | |
09ac7c10 | 15679 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15680 | return 1; |
15681 | } | |
15682 | } | |
15683 | ||
15684 | return 0; | |
15685 | } | |
15686 | ||
2060206e PA |
15687 | void |
15688 | initialize_breakpoint_ops (void) | |
15689 | { | |
15690 | static int initialized = 0; | |
15691 | ||
15692 | struct breakpoint_ops *ops; | |
15693 | ||
15694 | if (initialized) | |
15695 | return; | |
15696 | initialized = 1; | |
15697 | ||
15698 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15699 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15700 | internal and momentary breakpoints, etc.). */ | |
15701 | ops = &bkpt_base_breakpoint_ops; | |
15702 | *ops = base_breakpoint_ops; | |
15703 | ops->re_set = bkpt_re_set; | |
15704 | ops->insert_location = bkpt_insert_location; | |
15705 | ops->remove_location = bkpt_remove_location; | |
15706 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
983af33b SDJ |
15707 | ops->create_sals_from_address = bkpt_create_sals_from_address; |
15708 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; | |
15709 | ops->decode_linespec = bkpt_decode_linespec; | |
2060206e PA |
15710 | |
15711 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15712 | ops = &bkpt_breakpoint_ops; | |
15713 | *ops = bkpt_base_breakpoint_ops; | |
15714 | ops->re_set = bkpt_re_set; | |
15715 | ops->resources_needed = bkpt_resources_needed; | |
15716 | ops->print_it = bkpt_print_it; | |
15717 | ops->print_mention = bkpt_print_mention; | |
15718 | ops->print_recreate = bkpt_print_recreate; | |
15719 | ||
15720 | /* Ranged breakpoints. */ | |
15721 | ops = &ranged_breakpoint_ops; | |
15722 | *ops = bkpt_breakpoint_ops; | |
15723 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15724 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15725 | ops->print_it = print_it_ranged_breakpoint; | |
15726 | ops->print_one = print_one_ranged_breakpoint; | |
15727 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15728 | ops->print_mention = print_mention_ranged_breakpoint; | |
15729 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15730 | ||
15731 | /* Internal breakpoints. */ | |
15732 | ops = &internal_breakpoint_ops; | |
15733 | *ops = bkpt_base_breakpoint_ops; | |
15734 | ops->re_set = internal_bkpt_re_set; | |
15735 | ops->check_status = internal_bkpt_check_status; | |
15736 | ops->print_it = internal_bkpt_print_it; | |
15737 | ops->print_mention = internal_bkpt_print_mention; | |
15738 | ||
15739 | /* Momentary breakpoints. */ | |
15740 | ops = &momentary_breakpoint_ops; | |
15741 | *ops = bkpt_base_breakpoint_ops; | |
15742 | ops->re_set = momentary_bkpt_re_set; | |
15743 | ops->check_status = momentary_bkpt_check_status; | |
15744 | ops->print_it = momentary_bkpt_print_it; | |
15745 | ops->print_mention = momentary_bkpt_print_mention; | |
15746 | ||
e2e4d78b JK |
15747 | /* Momentary breakpoints for bp_longjmp and bp_exception. */ |
15748 | ops = &longjmp_breakpoint_ops; | |
15749 | *ops = momentary_breakpoint_ops; | |
15750 | ops->dtor = longjmp_bkpt_dtor; | |
15751 | ||
55aa24fb SDJ |
15752 | /* Probe breakpoints. */ |
15753 | ops = &bkpt_probe_breakpoint_ops; | |
15754 | *ops = bkpt_breakpoint_ops; | |
15755 | ops->insert_location = bkpt_probe_insert_location; | |
15756 | ops->remove_location = bkpt_probe_remove_location; | |
15757 | ops->create_sals_from_address = bkpt_probe_create_sals_from_address; | |
15758 | ops->decode_linespec = bkpt_probe_decode_linespec; | |
15759 | ||
2060206e PA |
15760 | /* GNU v3 exception catchpoints. */ |
15761 | ops = &gnu_v3_exception_catchpoint_ops; | |
15762 | *ops = bkpt_breakpoint_ops; | |
15763 | ops->print_it = print_it_exception_catchpoint; | |
15764 | ops->print_one = print_one_exception_catchpoint; | |
15765 | ops->print_mention = print_mention_exception_catchpoint; | |
15766 | ops->print_recreate = print_recreate_exception_catchpoint; | |
15767 | ||
15768 | /* Watchpoints. */ | |
15769 | ops = &watchpoint_breakpoint_ops; | |
15770 | *ops = base_breakpoint_ops; | |
3a5c3e22 | 15771 | ops->dtor = dtor_watchpoint; |
2060206e PA |
15772 | ops->re_set = re_set_watchpoint; |
15773 | ops->insert_location = insert_watchpoint; | |
15774 | ops->remove_location = remove_watchpoint; | |
15775 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15776 | ops->check_status = check_status_watchpoint; | |
15777 | ops->resources_needed = resources_needed_watchpoint; | |
15778 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15779 | ops->print_it = print_it_watchpoint; | |
15780 | ops->print_mention = print_mention_watchpoint; | |
15781 | ops->print_recreate = print_recreate_watchpoint; | |
15782 | ||
15783 | /* Masked watchpoints. */ | |
15784 | ops = &masked_watchpoint_breakpoint_ops; | |
15785 | *ops = watchpoint_breakpoint_ops; | |
15786 | ops->insert_location = insert_masked_watchpoint; | |
15787 | ops->remove_location = remove_masked_watchpoint; | |
15788 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15789 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15790 | ops->print_it = print_it_masked_watchpoint; | |
15791 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15792 | ops->print_mention = print_mention_masked_watchpoint; | |
15793 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15794 | ||
15795 | /* Tracepoints. */ | |
15796 | ops = &tracepoint_breakpoint_ops; | |
15797 | *ops = base_breakpoint_ops; | |
15798 | ops->re_set = tracepoint_re_set; | |
15799 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15800 | ops->print_one_detail = tracepoint_print_one_detail; | |
15801 | ops->print_mention = tracepoint_print_mention; | |
15802 | ops->print_recreate = tracepoint_print_recreate; | |
983af33b SDJ |
15803 | ops->create_sals_from_address = tracepoint_create_sals_from_address; |
15804 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; | |
15805 | ops->decode_linespec = tracepoint_decode_linespec; | |
15806 | ||
55aa24fb SDJ |
15807 | /* Probe tracepoints. */ |
15808 | ops = &tracepoint_probe_breakpoint_ops; | |
15809 | *ops = tracepoint_breakpoint_ops; | |
15810 | ops->create_sals_from_address = tracepoint_probe_create_sals_from_address; | |
15811 | ops->decode_linespec = tracepoint_probe_decode_linespec; | |
15812 | ||
983af33b SDJ |
15813 | /* Static tracepoints with marker (`-m'). */ |
15814 | ops = &strace_marker_breakpoint_ops; | |
15815 | *ops = tracepoint_breakpoint_ops; | |
15816 | ops->create_sals_from_address = strace_marker_create_sals_from_address; | |
15817 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; | |
15818 | ops->decode_linespec = strace_marker_decode_linespec; | |
2060206e PA |
15819 | |
15820 | /* Fork catchpoints. */ | |
15821 | ops = &catch_fork_breakpoint_ops; | |
15822 | *ops = base_breakpoint_ops; | |
15823 | ops->insert_location = insert_catch_fork; | |
15824 | ops->remove_location = remove_catch_fork; | |
15825 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15826 | ops->print_it = print_it_catch_fork; | |
15827 | ops->print_one = print_one_catch_fork; | |
15828 | ops->print_mention = print_mention_catch_fork; | |
15829 | ops->print_recreate = print_recreate_catch_fork; | |
15830 | ||
15831 | /* Vfork catchpoints. */ | |
15832 | ops = &catch_vfork_breakpoint_ops; | |
15833 | *ops = base_breakpoint_ops; | |
15834 | ops->insert_location = insert_catch_vfork; | |
15835 | ops->remove_location = remove_catch_vfork; | |
15836 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15837 | ops->print_it = print_it_catch_vfork; | |
15838 | ops->print_one = print_one_catch_vfork; | |
15839 | ops->print_mention = print_mention_catch_vfork; | |
15840 | ops->print_recreate = print_recreate_catch_vfork; | |
15841 | ||
15842 | /* Exec catchpoints. */ | |
15843 | ops = &catch_exec_breakpoint_ops; | |
15844 | *ops = base_breakpoint_ops; | |
15845 | ops->dtor = dtor_catch_exec; | |
15846 | ops->insert_location = insert_catch_exec; | |
15847 | ops->remove_location = remove_catch_exec; | |
15848 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15849 | ops->print_it = print_it_catch_exec; | |
15850 | ops->print_one = print_one_catch_exec; | |
15851 | ops->print_mention = print_mention_catch_exec; | |
15852 | ops->print_recreate = print_recreate_catch_exec; | |
15853 | ||
15854 | /* Syscall catchpoints. */ | |
15855 | ops = &catch_syscall_breakpoint_ops; | |
15856 | *ops = base_breakpoint_ops; | |
15857 | ops->dtor = dtor_catch_syscall; | |
15858 | ops->insert_location = insert_catch_syscall; | |
15859 | ops->remove_location = remove_catch_syscall; | |
15860 | ops->breakpoint_hit = breakpoint_hit_catch_syscall; | |
15861 | ops->print_it = print_it_catch_syscall; | |
15862 | ops->print_one = print_one_catch_syscall; | |
15863 | ops->print_mention = print_mention_catch_syscall; | |
15864 | ops->print_recreate = print_recreate_catch_syscall; | |
edcc5120 TT |
15865 | |
15866 | /* Solib-related catchpoints. */ | |
15867 | ops = &catch_solib_breakpoint_ops; | |
15868 | *ops = base_breakpoint_ops; | |
15869 | ops->dtor = dtor_catch_solib; | |
15870 | ops->insert_location = insert_catch_solib; | |
15871 | ops->remove_location = remove_catch_solib; | |
15872 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15873 | ops->check_status = check_status_catch_solib; | |
15874 | ops->print_it = print_it_catch_solib; | |
15875 | ops->print_one = print_one_catch_solib; | |
15876 | ops->print_mention = print_mention_catch_solib; | |
15877 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15878 | |
15879 | ops = &dprintf_breakpoint_ops; | |
15880 | *ops = bkpt_base_breakpoint_ops; | |
15881 | ops->re_set = bkpt_re_set; | |
15882 | ops->resources_needed = bkpt_resources_needed; | |
15883 | ops->print_it = bkpt_print_it; | |
15884 | ops->print_mention = bkpt_print_mention; | |
15885 | ops->print_recreate = bkpt_print_recreate; | |
2060206e PA |
15886 | } |
15887 | ||
8bfd80db YQ |
15888 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
15889 | ||
15890 | static struct cmd_list_element *enablebreaklist = NULL; | |
15891 | ||
c906108c | 15892 | void |
fba45db2 | 15893 | _initialize_breakpoint (void) |
c906108c SS |
15894 | { |
15895 | struct cmd_list_element *c; | |
15896 | ||
2060206e PA |
15897 | initialize_breakpoint_ops (); |
15898 | ||
84acb35a | 15899 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
6c95b8df | 15900 | observer_attach_inferior_exit (clear_syscall_counts); |
1f3b5d1b | 15901 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 15902 | |
55aa24fb SDJ |
15903 | breakpoint_objfile_key |
15904 | = register_objfile_data_with_cleanup (NULL, free_breakpoint_probes); | |
17450429 | 15905 | |
fa3064dd | 15906 | catch_syscall_inferior_data |
8e260fc0 TT |
15907 | = register_inferior_data_with_cleanup (NULL, |
15908 | catch_syscall_inferior_data_cleanup); | |
fa3064dd | 15909 | |
c906108c SS |
15910 | breakpoint_chain = 0; |
15911 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15912 | before a breakpoint is set. */ | |
15913 | breakpoint_count = 0; | |
15914 | ||
1042e4c0 SS |
15915 | tracepoint_count = 0; |
15916 | ||
1bedd215 AC |
15917 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15918 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15919 | Usage is `ignore N COUNT'.")); | |
c906108c | 15920 | if (xdb_commands) |
c5aa993b | 15921 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 15922 | |
1bedd215 AC |
15923 | add_com ("commands", class_breakpoint, commands_command, _("\ |
15924 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
15925 | Give breakpoint number as argument after \"commands\".\n\ |
15926 | With no argument, the targeted breakpoint is the last one set.\n\ | |
15927 | The commands themselves follow starting on the next line.\n\ | |
15928 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15929 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15930 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15931 | |
d55637df | 15932 | c = add_com ("condition", class_breakpoint, condition_command, _("\ |
1bedd215 | 15933 | Specify breakpoint number N to break only if COND is true.\n\ |
c906108c | 15934 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 15935 | expression to be evaluated whenever breakpoint N is reached.")); |
d55637df | 15936 | set_cmd_completer (c, condition_completer); |
c906108c | 15937 | |
1bedd215 | 15938 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15939 | Set a temporary breakpoint.\n\ |
c906108c SS |
15940 | Like \"break\" except the breakpoint is only temporary,\n\ |
15941 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15942 | by using \"enable delete\" on the breakpoint number.\n\ |
15943 | \n" | |
15944 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15945 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15946 | |
1bedd215 | 15947 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15948 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15949 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15950 | some target hardware may not have this support.\n\ |
15951 | \n" | |
15952 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15953 | set_cmd_completer (c, location_completer); |
c906108c | 15954 | |
1bedd215 | 15955 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15956 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 15957 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
15958 | so it will be deleted when hit.\n\ |
15959 | \n" | |
15960 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 15961 | set_cmd_completer (c, location_completer); |
c906108c | 15962 | |
1bedd215 AC |
15963 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
15964 | Enable some breakpoints.\n\ | |
c906108c SS |
15965 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15966 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15967 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15968 | With a subcommand you can enable temporarily."), |
c906108c SS |
15969 | &enablelist, "enable ", 1, &cmdlist); |
15970 | if (xdb_commands) | |
1bedd215 AC |
15971 | add_com ("ab", class_breakpoint, enable_command, _("\ |
15972 | Enable some breakpoints.\n\ | |
c906108c SS |
15973 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15974 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15975 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15976 | With a subcommand you can enable temporarily.")); |
c906108c SS |
15977 | |
15978 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
15979 | ||
84951ab5 | 15980 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 15981 | Enable some breakpoints.\n\ |
c906108c SS |
15982 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15983 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15984 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 15985 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 15986 | |
1a966eab AC |
15987 | add_cmd ("once", no_class, enable_once_command, _("\ |
15988 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15989 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
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 | &enablebreaklist); |
15996 | ||
816338b5 SS |
15997 | add_cmd ("count", no_class, enable_count_command, _("\ |
15998 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15999 | If a breakpoint is hit while enabled in this fashion,\n\ | |
16000 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
16001 | &enablebreaklist); | |
16002 | ||
1a966eab AC |
16003 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
16004 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
16005 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
16006 | &enablelist); |
16007 | ||
1a966eab AC |
16008 | add_cmd ("once", no_class, enable_once_command, _("\ |
16009 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
16010 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
816338b5 SS |
16011 | &enablelist); |
16012 | ||
16013 | add_cmd ("count", no_class, enable_count_command, _("\ | |
16014 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
16015 | If a breakpoint is hit while enabled in this fashion,\n\ | |
16016 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
16017 | &enablelist); |
16018 | ||
1bedd215 AC |
16019 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
16020 | Disable some breakpoints.\n\ | |
c906108c SS |
16021 | Arguments are breakpoint numbers with spaces in between.\n\ |
16022 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 16023 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
16024 | &disablelist, "disable ", 1, &cmdlist); |
16025 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
16026 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
16027 | if (xdb_commands) | |
1bedd215 AC |
16028 | add_com ("sb", class_breakpoint, disable_command, _("\ |
16029 | Disable some breakpoints.\n\ | |
c906108c SS |
16030 | Arguments are breakpoint numbers with spaces in between.\n\ |
16031 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 16032 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.")); |
c906108c | 16033 | |
1a966eab AC |
16034 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
16035 | Disable some breakpoints.\n\ | |
c906108c SS |
16036 | Arguments are breakpoint numbers with spaces in between.\n\ |
16037 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 16038 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 16039 | This command may be abbreviated \"disable\"."), |
c906108c SS |
16040 | &disablelist); |
16041 | ||
1bedd215 AC |
16042 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
16043 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
16044 | Arguments are breakpoint numbers with spaces in between.\n\ |
16045 | To delete all breakpoints, give no argument.\n\ | |
16046 | \n\ | |
16047 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 16048 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
16049 | &deletelist, "delete ", 1, &cmdlist); |
16050 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 16051 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 16052 | if (xdb_commands) |
1bedd215 AC |
16053 | add_com ("db", class_breakpoint, delete_command, _("\ |
16054 | Delete some breakpoints.\n\ | |
c906108c | 16055 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 16056 | To delete all breakpoints, give no argument.\n")); |
c906108c | 16057 | |
1a966eab AC |
16058 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
16059 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
16060 | Arguments are breakpoint numbers with spaces in between.\n\ |
16061 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 16062 | This command may be abbreviated \"delete\"."), |
c906108c SS |
16063 | &deletelist); |
16064 | ||
1bedd215 AC |
16065 | add_com ("clear", class_breakpoint, clear_command, _("\ |
16066 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
16067 | Argument may be line number, function name, or \"*\" and an address.\n\ |
16068 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
16069 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
16070 | If an address is specified, breakpoints at that address are cleared.\n\ |
16071 | \n\ | |
16072 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
16073 | is executing in.\n\ |
16074 | \n\ | |
1bedd215 | 16075 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 16076 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 16077 | |
1bedd215 | 16078 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
16079 | Set breakpoint at specified line or function.\n" |
16080 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 16081 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 16082 | |
c906108c SS |
16083 | add_com_alias ("b", "break", class_run, 1); |
16084 | add_com_alias ("br", "break", class_run, 1); | |
16085 | add_com_alias ("bre", "break", class_run, 1); | |
16086 | add_com_alias ("brea", "break", class_run, 1); | |
16087 | ||
7681d515 PM |
16088 | if (xdb_commands) |
16089 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
c906108c SS |
16090 | |
16091 | if (dbx_commands) | |
16092 | { | |
1bedd215 AC |
16093 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
16094 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
16095 | &stoplist, "stop ", 1, &cmdlist); |
16096 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 16097 | _("Break in function or address."), &stoplist); |
c5aa993b | 16098 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 16099 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
16100 | add_com ("status", class_info, breakpoints_info, _("\ |
16101 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
16102 | The \"Type\" column indicates one of:\n\ |
16103 | \tbreakpoint - normal breakpoint\n\ | |
16104 | \twatchpoint - watchpoint\n\ | |
16105 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
16106 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
16107 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
16108 | address and file/line number respectively.\n\ |
16109 | \n\ | |
16110 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16111 | are set to the address of the last breakpoint listed unless the command\n\ |
16112 | is prefixed with \"server \".\n\n\ | |
c906108c | 16113 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 16114 | breakpoint set.")); |
c906108c SS |
16115 | } |
16116 | ||
1bedd215 | 16117 | add_info ("breakpoints", breakpoints_info, _("\ |
e5a67952 | 16118 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
16119 | The \"Type\" column indicates one of:\n\ |
16120 | \tbreakpoint - normal breakpoint\n\ | |
16121 | \twatchpoint - watchpoint\n\ | |
16122 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
16123 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
16124 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
16125 | address and file/line number respectively.\n\ |
16126 | \n\ | |
16127 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16128 | are set to the address of the last breakpoint listed unless the command\n\ |
16129 | is prefixed with \"server \".\n\n\ | |
c906108c | 16130 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 16131 | breakpoint set.")); |
c906108c | 16132 | |
6b04bdb7 MS |
16133 | add_info_alias ("b", "breakpoints", 1); |
16134 | ||
c906108c | 16135 | if (xdb_commands) |
1bedd215 AC |
16136 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
16137 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
16138 | The \"Type\" column indicates one of:\n\ |
16139 | \tbreakpoint - normal breakpoint\n\ | |
16140 | \twatchpoint - watchpoint\n\ | |
16141 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
16142 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
16143 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
16144 | address and file/line number respectively.\n\ |
16145 | \n\ | |
16146 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16147 | are set to the address of the last breakpoint listed unless the command\n\ |
16148 | is prefixed with \"server \".\n\n\ | |
c906108c | 16149 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 16150 | breakpoint set.")); |
c906108c | 16151 | |
1a966eab AC |
16152 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
16153 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
16154 | The \"Type\" column indicates one of:\n\ |
16155 | \tbreakpoint - normal breakpoint\n\ | |
16156 | \twatchpoint - watchpoint\n\ | |
16157 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
16158 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
16159 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
16160 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
16161 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
16162 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
16163 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
16164 | address and file/line number respectively.\n\ |
16165 | \n\ | |
16166 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16167 | are set to the address of the last breakpoint listed unless the command\n\ |
16168 | is prefixed with \"server \".\n\n\ | |
c906108c | 16169 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 16170 | breakpoint set."), |
c906108c SS |
16171 | &maintenanceinfolist); |
16172 | ||
44feb3ce TT |
16173 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
16174 | Set catchpoints to catch events."), | |
16175 | &catch_cmdlist, "catch ", | |
16176 | 0/*allow-unknown*/, &cmdlist); | |
16177 | ||
16178 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
16179 | Set temporary catchpoints to catch events."), | |
16180 | &tcatch_cmdlist, "tcatch ", | |
16181 | 0/*allow-unknown*/, &cmdlist); | |
16182 | ||
16183 | /* Add catch and tcatch sub-commands. */ | |
16184 | add_catch_command ("catch", _("\ | |
88e7d25d | 16185 | Catch an exception, when caught."), |
44feb3ce | 16186 | catch_catch_command, |
a96d9b2e | 16187 | NULL, |
44feb3ce TT |
16188 | CATCH_PERMANENT, |
16189 | CATCH_TEMPORARY); | |
16190 | add_catch_command ("throw", _("\ | |
88e7d25d | 16191 | Catch an exception, when thrown."), |
44feb3ce | 16192 | catch_throw_command, |
a96d9b2e | 16193 | NULL, |
44feb3ce TT |
16194 | CATCH_PERMANENT, |
16195 | CATCH_TEMPORARY); | |
16196 | add_catch_command ("fork", _("Catch calls to fork."), | |
16197 | catch_fork_command_1, | |
a96d9b2e | 16198 | NULL, |
44feb3ce TT |
16199 | (void *) (uintptr_t) catch_fork_permanent, |
16200 | (void *) (uintptr_t) catch_fork_temporary); | |
16201 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
16202 | catch_fork_command_1, | |
a96d9b2e | 16203 | NULL, |
44feb3ce TT |
16204 | (void *) (uintptr_t) catch_vfork_permanent, |
16205 | (void *) (uintptr_t) catch_vfork_temporary); | |
16206 | add_catch_command ("exec", _("Catch calls to exec."), | |
16207 | catch_exec_command_1, | |
a96d9b2e SDJ |
16208 | NULL, |
16209 | CATCH_PERMANENT, | |
16210 | CATCH_TEMPORARY); | |
edcc5120 TT |
16211 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
16212 | Usage: catch load [REGEX]\n\ | |
16213 | If REGEX is given, only stop for libraries matching the regular expression."), | |
16214 | catch_load_command_1, | |
16215 | NULL, | |
16216 | CATCH_PERMANENT, | |
16217 | CATCH_TEMPORARY); | |
16218 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
16219 | Usage: catch unload [REGEX]\n\ | |
16220 | If REGEX is given, only stop for libraries matching the regular expression."), | |
16221 | catch_unload_command_1, | |
16222 | NULL, | |
16223 | CATCH_PERMANENT, | |
16224 | CATCH_TEMPORARY); | |
a96d9b2e SDJ |
16225 | add_catch_command ("syscall", _("\ |
16226 | Catch system calls by their names and/or numbers.\n\ | |
16227 | Arguments say which system calls to catch. If no arguments\n\ | |
16228 | are given, every system call will be caught.\n\ | |
16229 | Arguments, if given, should be one or more system call names\n\ | |
16230 | (if your system supports that), or system call numbers."), | |
16231 | catch_syscall_command_1, | |
16232 | catch_syscall_completer, | |
44feb3ce TT |
16233 | CATCH_PERMANENT, |
16234 | CATCH_TEMPORARY); | |
c5aa993b | 16235 | |
1bedd215 AC |
16236 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
16237 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 16238 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 16239 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16240 | an expression changes.\n\ |
16241 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16242 | the memory to which it refers.")); | |
65d12d83 | 16243 | set_cmd_completer (c, expression_completer); |
c906108c | 16244 | |
1bedd215 AC |
16245 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
16246 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 16247 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 16248 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16249 | an expression is read.\n\ |
16250 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16251 | the memory to which it refers.")); | |
65d12d83 | 16252 | set_cmd_completer (c, expression_completer); |
c906108c | 16253 | |
1bedd215 AC |
16254 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
16255 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 16256 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 16257 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16258 | an expression is either read or written.\n\ |
16259 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16260 | the memory to which it refers.")); | |
65d12d83 | 16261 | set_cmd_completer (c, expression_completer); |
c906108c | 16262 | |
d77f58be | 16263 | add_info ("watchpoints", watchpoints_info, _("\ |
e5a67952 | 16264 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 16265 | |
920d2a44 AC |
16266 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
16267 | respond to changes - contrary to the description. */ | |
85c07804 AC |
16268 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
16269 | &can_use_hw_watchpoints, _("\ | |
16270 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
16271 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
16272 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
16273 | such is available. (However, any hardware watchpoints that were\n\ | |
16274 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
16275 | hardware.)"), |
16276 | NULL, | |
920d2a44 | 16277 | show_can_use_hw_watchpoints, |
85c07804 | 16278 | &setlist, &showlist); |
c906108c SS |
16279 | |
16280 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 16281 | |
1042e4c0 SS |
16282 | /* Tracepoint manipulation commands. */ |
16283 | ||
16284 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
16285 | Set a tracepoint at specified line or function.\n\ | |
16286 | \n" | |
16287 | BREAK_ARGS_HELP ("trace") "\n\ | |
16288 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16289 | set_cmd_completer (c, location_completer); | |
16290 | ||
16291 | add_com_alias ("tp", "trace", class_alias, 0); | |
16292 | add_com_alias ("tr", "trace", class_alias, 1); | |
16293 | add_com_alias ("tra", "trace", class_alias, 1); | |
16294 | add_com_alias ("trac", "trace", class_alias, 1); | |
16295 | ||
7a697b8d SS |
16296 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
16297 | Set a fast tracepoint at specified line or function.\n\ | |
16298 | \n" | |
16299 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
16300 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16301 | set_cmd_completer (c, location_completer); | |
16302 | ||
0fb4aa4b PA |
16303 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
16304 | Set a static tracepoint at specified line, function or marker.\n\ | |
16305 | \n\ | |
16306 | strace [LOCATION] [if CONDITION]\n\ | |
16307 | LOCATION may be a line number, function name, \"*\" and an address,\n\ | |
16308 | or -m MARKER_ID.\n\ | |
16309 | If a line number is specified, probe the marker at start of code\n\ | |
16310 | for that line. If a function is specified, probe the marker at start\n\ | |
16311 | of code for that function. If an address is specified, probe the marker\n\ | |
16312 | at that exact address. If a marker id is specified, probe the marker\n\ | |
16313 | with that name. With no LOCATION, uses current execution address of\n\ | |
16314 | the selected stack frame.\n\ | |
16315 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ | |
16316 | This collects arbitrary user data passed in the probe point call to the\n\ | |
16317 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
16318 | by printing the $_sdata variable like any other convenience variable.\n\ | |
16319 | \n\ | |
16320 | CONDITION is a boolean expression.\n\ | |
16321 | \n\ | |
d41c0fc8 PA |
16322 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
16323 | conditions are different.\n\ | |
0fb4aa4b PA |
16324 | \n\ |
16325 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
16326 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16327 | set_cmd_completer (c, location_completer); | |
16328 | ||
1042e4c0 | 16329 | add_info ("tracepoints", tracepoints_info, _("\ |
e5a67952 | 16330 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
16331 | Convenience variable \"$tpnum\" contains the number of the\n\ |
16332 | last tracepoint set.")); | |
16333 | ||
16334 | add_info_alias ("tp", "tracepoints", 1); | |
16335 | ||
16336 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
16337 | Delete specified tracepoints.\n\ | |
16338 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16339 | No argument means delete all tracepoints."), | |
16340 | &deletelist); | |
16341 | ||
16342 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
16343 | Disable specified tracepoints.\n\ | |
16344 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16345 | No argument means disable all tracepoints."), | |
16346 | &disablelist); | |
16347 | deprecate_cmd (c, "disable"); | |
16348 | ||
16349 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
16350 | Enable specified tracepoints.\n\ | |
16351 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16352 | No argument means enable all tracepoints."), | |
16353 | &enablelist); | |
16354 | deprecate_cmd (c, "enable"); | |
16355 | ||
16356 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
16357 | Set the passcount for a tracepoint.\n\ | |
16358 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
16359 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
16360 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
16361 | ||
6149aea9 PA |
16362 | add_prefix_cmd ("save", class_breakpoint, save_command, |
16363 | _("Save breakpoint definitions as a script."), | |
16364 | &save_cmdlist, "save ", | |
16365 | 0/*allow-unknown*/, &cmdlist); | |
16366 | ||
16367 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
16368 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 16369 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
16370 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
16371 | session to restore them."), | |
16372 | &save_cmdlist); | |
16373 | set_cmd_completer (c, filename_completer); | |
16374 | ||
16375 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 16376 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
16377 | Use the 'source' command in another debug session to restore them."), |
16378 | &save_cmdlist); | |
1042e4c0 SS |
16379 | set_cmd_completer (c, filename_completer); |
16380 | ||
6149aea9 PA |
16381 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
16382 | deprecate_cmd (c, "save tracepoints"); | |
16383 | ||
1bedd215 | 16384 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
16385 | Breakpoint specific settings\n\ |
16386 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 16387 | pending breakpoint behavior"), |
fa8d40ab JJ |
16388 | &breakpoint_set_cmdlist, "set breakpoint ", |
16389 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 16390 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
16391 | Breakpoint specific settings\n\ |
16392 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 16393 | pending breakpoint behavior"), |
fa8d40ab JJ |
16394 | &breakpoint_show_cmdlist, "show breakpoint ", |
16395 | 0/*allow-unknown*/, &showlist); | |
16396 | ||
7915a72c AC |
16397 | add_setshow_auto_boolean_cmd ("pending", no_class, |
16398 | &pending_break_support, _("\ | |
16399 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
16400 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
16401 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
16402 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
16403 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 16404 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 16405 | NULL, |
920d2a44 | 16406 | show_pending_break_support, |
6e1d7d6c AC |
16407 | &breakpoint_set_cmdlist, |
16408 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
16409 | |
16410 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
16411 | |
16412 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
16413 | &automatic_hardware_breakpoints, _("\ | |
16414 | Set automatic usage of hardware breakpoints."), _("\ | |
16415 | Show automatic usage of hardware breakpoints."), _("\ | |
16416 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
16417 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
16418 | a warning will be emitted for such breakpoints."), | |
16419 | NULL, | |
16420 | show_automatic_hardware_breakpoints, | |
16421 | &breakpoint_set_cmdlist, | |
16422 | &breakpoint_show_cmdlist); | |
74960c60 | 16423 | |
72d0e2c5 YQ |
16424 | add_setshow_auto_boolean_cmd ("always-inserted", class_support, |
16425 | &always_inserted_mode, _("\ | |
74960c60 VP |
16426 | Set mode for inserting breakpoints."), _("\ |
16427 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
16428 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
16429 | resumed, and removed when execution stops. When this mode is on,\n\ | |
16430 | breakpoints are inserted immediately and removed only when the user\n\ | |
16431 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
16432 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
16433 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
16434 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
16435 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
72d0e2c5 YQ |
16436 | NULL, |
16437 | &show_always_inserted_mode, | |
16438 | &breakpoint_set_cmdlist, | |
16439 | &breakpoint_show_cmdlist); | |
f1310107 | 16440 | |
b775012e LM |
16441 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
16442 | condition_evaluation_enums, | |
16443 | &condition_evaluation_mode_1, _("\ | |
16444 | Set mode of breakpoint condition evaluation."), _("\ | |
16445 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 16446 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
16447 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
16448 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
16449 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
16450 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
16451 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
16452 | be set to \"gdb\""), | |
16453 | &set_condition_evaluation_mode, | |
16454 | &show_condition_evaluation_mode, | |
16455 | &breakpoint_set_cmdlist, | |
16456 | &breakpoint_show_cmdlist); | |
16457 | ||
f1310107 TJB |
16458 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
16459 | Set a breakpoint for an address range.\n\ | |
16460 | break-range START-LOCATION, END-LOCATION\n\ | |
16461 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
16462 | LINENUM, for that line in the current file,\n\ | |
16463 | FILE:LINENUM, for that line in that file,\n\ | |
16464 | +OFFSET, for that number of lines after the current line\n\ | |
16465 | or the start of the range\n\ | |
16466 | FUNCTION, for the first line in that function,\n\ | |
16467 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
16468 | *ADDRESS, for the instruction at that address.\n\ | |
16469 | \n\ | |
16470 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
16471 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
16472 | range (including START-LOCATION and END-LOCATION).")); | |
16473 | ||
e7e0cddf SS |
16474 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
16475 | Set a dynamic printf at specified line or function.\n\ | |
16476 | dprintf location,format string,arg1,arg2,...\n\ | |
16477 | location may be a line number, function name, or \"*\" and an address.\n\ | |
16478 | If a line number is specified, break at start of code for that line.\n\ | |
16479 | If a function is specified, break at start of code for that function.\n\ | |
16480 | ")); | |
16481 | set_cmd_completer (c, location_completer); | |
16482 | ||
16483 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
16484 | dprintf_style_enums, &dprintf_style, _("\ | |
16485 | Set the style of usage for dynamic printf."), _("\ | |
16486 | Show the style of usage for dynamic printf."), _("\ | |
16487 | This setting chooses how GDB will do a dynamic printf.\n\ | |
16488 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
16489 | console, as with the \"printf\" command.\n\ | |
16490 | If the value is \"call\", the print is done by calling a function in your\n\ | |
16491 | program; by default printf(), but you can choose a different function or\n\ | |
16492 | output stream by setting dprintf-function and dprintf-channel."), | |
16493 | update_dprintf_commands, NULL, | |
16494 | &setlist, &showlist); | |
16495 | ||
16496 | dprintf_function = xstrdup ("printf"); | |
16497 | add_setshow_string_cmd ("dprintf-function", class_support, | |
16498 | &dprintf_function, _("\ | |
16499 | Set the function to use for dynamic printf"), _("\ | |
16500 | Show the function to use for dynamic printf"), NULL, | |
16501 | update_dprintf_commands, NULL, | |
16502 | &setlist, &showlist); | |
16503 | ||
16504 | dprintf_channel = xstrdup (""); | |
16505 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
16506 | &dprintf_channel, _("\ | |
16507 | Set the channel to use for dynamic printf"), _("\ | |
16508 | Show the channel to use for dynamic printf"), NULL, | |
16509 | update_dprintf_commands, NULL, | |
16510 | &setlist, &showlist); | |
16511 | ||
d3ce09f5 SS |
16512 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
16513 | &disconnected_dprintf, _("\ | |
16514 | Set whether dprintf continues after GDB disconnects."), _("\ | |
16515 | Show whether dprintf continues after GDB disconnects."), _("\ | |
16516 | Use this to let dprintf commands continue to hit and produce output\n\ | |
16517 | even if GDB disconnects or detaches from the target."), | |
16518 | NULL, | |
16519 | NULL, | |
16520 | &setlist, &showlist); | |
16521 | ||
16522 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
16523 | agent-printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
16524 | (target agent only) This is useful for formatted output in user-defined commands.")); | |
16525 | ||
765dc015 | 16526 | automatic_hardware_breakpoints = 1; |
f3b1572e PA |
16527 | |
16528 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
c906108c | 16529 | } |