Commit | Line | Data |
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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 | ||
558a9d82 YQ |
264 | static void set_tracepoint_count (int num); |
265 | ||
9c06b0b4 TJB |
266 | static int is_masked_watchpoint (const struct breakpoint *b); |
267 | ||
b775012e LM |
268 | static struct bp_location **get_first_locp_gte_addr (CORE_ADDR address); |
269 | ||
983af33b SDJ |
270 | /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero |
271 | otherwise. */ | |
272 | ||
273 | static int strace_marker_p (struct breakpoint *b); | |
0fb4aa4b | 274 | |
edcc5120 TT |
275 | static void init_catchpoint (struct breakpoint *b, |
276 | struct gdbarch *gdbarch, int tempflag, | |
277 | char *cond_string, | |
278 | const struct breakpoint_ops *ops); | |
279 | ||
2060206e PA |
280 | /* The abstract base class all breakpoint_ops structures inherit |
281 | from. */ | |
282 | static struct breakpoint_ops base_breakpoint_ops; | |
283 | ||
284 | /* The breakpoint_ops structure to be inherited by all breakpoint_ops | |
285 | that are implemented on top of software or hardware breakpoints | |
286 | (user breakpoints, internal and momentary breakpoints, etc.). */ | |
287 | static struct breakpoint_ops bkpt_base_breakpoint_ops; | |
288 | ||
289 | /* Internal breakpoints class type. */ | |
06edf0c0 | 290 | static struct breakpoint_ops internal_breakpoint_ops; |
2060206e PA |
291 | |
292 | /* Momentary breakpoints class type. */ | |
06edf0c0 PA |
293 | static struct breakpoint_ops momentary_breakpoint_ops; |
294 | ||
e2e4d78b JK |
295 | /* Momentary breakpoints for bp_longjmp and bp_exception class type. */ |
296 | static struct breakpoint_ops longjmp_breakpoint_ops; | |
297 | ||
2060206e PA |
298 | /* The breakpoint_ops structure to be used in regular user created |
299 | breakpoints. */ | |
300 | struct breakpoint_ops bkpt_breakpoint_ops; | |
301 | ||
55aa24fb SDJ |
302 | /* Breakpoints set on probes. */ |
303 | static struct breakpoint_ops bkpt_probe_breakpoint_ops; | |
304 | ||
e7e0cddf SS |
305 | /* Dynamic printf class type. */ |
306 | static struct breakpoint_ops dprintf_breakpoint_ops; | |
307 | ||
d3ce09f5 SS |
308 | /* The style in which to perform a dynamic printf. This is a user |
309 | option because different output options have different tradeoffs; | |
310 | if GDB does the printing, there is better error handling if there | |
311 | is a problem with any of the arguments, but using an inferior | |
312 | function lets you have special-purpose printers and sending of | |
313 | output to the same place as compiled-in print functions. */ | |
314 | ||
315 | static const char dprintf_style_gdb[] = "gdb"; | |
316 | static const char dprintf_style_call[] = "call"; | |
317 | static const char dprintf_style_agent[] = "agent"; | |
318 | static const char *const dprintf_style_enums[] = { | |
319 | dprintf_style_gdb, | |
320 | dprintf_style_call, | |
321 | dprintf_style_agent, | |
322 | NULL | |
323 | }; | |
324 | static const char *dprintf_style = dprintf_style_gdb; | |
325 | ||
326 | /* The function to use for dynamic printf if the preferred style is to | |
327 | call into the inferior. The value is simply a string that is | |
328 | copied into the command, so it can be anything that GDB can | |
329 | evaluate to a callable address, not necessarily a function name. */ | |
330 | ||
331 | static char *dprintf_function = ""; | |
332 | ||
333 | /* The channel to use for dynamic printf if the preferred style is to | |
334 | call into the inferior; if a nonempty string, it will be passed to | |
335 | the call as the first argument, with the format string as the | |
336 | second. As with the dprintf function, this can be anything that | |
337 | GDB knows how to evaluate, so in addition to common choices like | |
338 | "stderr", this could be an app-specific expression like | |
339 | "mystreams[curlogger]". */ | |
340 | ||
341 | static char *dprintf_channel = ""; | |
342 | ||
343 | /* True if dprintf commands should continue to operate even if GDB | |
344 | has disconnected. */ | |
345 | static int disconnected_dprintf = 1; | |
346 | ||
5cea2a26 PA |
347 | /* A reference-counted struct command_line. This lets multiple |
348 | breakpoints share a single command list. */ | |
349 | struct counted_command_line | |
350 | { | |
351 | /* The reference count. */ | |
352 | int refc; | |
353 | ||
354 | /* The command list. */ | |
355 | struct command_line *commands; | |
356 | }; | |
357 | ||
358 | struct command_line * | |
359 | breakpoint_commands (struct breakpoint *b) | |
360 | { | |
361 | return b->commands ? b->commands->commands : NULL; | |
362 | } | |
3daf8fe5 | 363 | |
f3b1572e PA |
364 | /* Flag indicating that a command has proceeded the inferior past the |
365 | current breakpoint. */ | |
366 | ||
367 | static int breakpoint_proceeded; | |
368 | ||
956a9fb9 | 369 | const char * |
2cec12e5 AR |
370 | bpdisp_text (enum bpdisp disp) |
371 | { | |
4a64f543 MS |
372 | /* NOTE: the following values are a part of MI protocol and |
373 | represent values of 'disp' field returned when inferior stops at | |
374 | a breakpoint. */ | |
bc043ef3 | 375 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 376 | |
2cec12e5 AR |
377 | return bpdisps[(int) disp]; |
378 | } | |
c906108c | 379 | |
4a64f543 | 380 | /* Prototypes for exported functions. */ |
c906108c | 381 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 382 | if such is available. */ |
c906108c SS |
383 | static int can_use_hw_watchpoints; |
384 | ||
920d2a44 AC |
385 | static void |
386 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
387 | struct cmd_list_element *c, | |
388 | const char *value) | |
389 | { | |
3e43a32a MS |
390 | fprintf_filtered (file, |
391 | _("Debugger's willingness to use " | |
392 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
393 | value); |
394 | } | |
395 | ||
fa8d40ab JJ |
396 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
397 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 398 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
399 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
400 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
401 | static void |
402 | show_pending_break_support (struct ui_file *file, int from_tty, | |
403 | struct cmd_list_element *c, | |
404 | const char *value) | |
405 | { | |
3e43a32a MS |
406 | fprintf_filtered (file, |
407 | _("Debugger's behavior regarding " | |
408 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
409 | value); |
410 | } | |
fa8d40ab | 411 | |
765dc015 | 412 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 413 | set with "break" but falling in read-only memory. |
765dc015 VP |
414 | If 0, gdb will warn about such breakpoints, but won't automatically |
415 | use hardware breakpoints. */ | |
416 | static int automatic_hardware_breakpoints; | |
417 | static void | |
418 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
419 | struct cmd_list_element *c, | |
420 | const char *value) | |
421 | { | |
3e43a32a MS |
422 | fprintf_filtered (file, |
423 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
424 | value); |
425 | } | |
426 | ||
33e5cbd6 PA |
427 | /* If on, gdb will keep breakpoints inserted even as inferior is |
428 | stopped, and immediately insert any new breakpoints. If off, gdb | |
429 | will insert breakpoints into inferior only when resuming it, and | |
430 | will remove breakpoints upon stop. If auto, GDB will behave as ON | |
431 | if in non-stop mode, and as OFF if all-stop mode.*/ | |
432 | ||
72d0e2c5 YQ |
433 | static enum auto_boolean always_inserted_mode = AUTO_BOOLEAN_AUTO; |
434 | ||
33e5cbd6 | 435 | static void |
74960c60 | 436 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 437 | struct cmd_list_element *c, const char *value) |
74960c60 | 438 | { |
72d0e2c5 | 439 | if (always_inserted_mode == AUTO_BOOLEAN_AUTO) |
3e43a32a MS |
440 | fprintf_filtered (file, |
441 | _("Always inserted breakpoint " | |
442 | "mode is %s (currently %s).\n"), | |
33e5cbd6 PA |
443 | value, |
444 | breakpoints_always_inserted_mode () ? "on" : "off"); | |
445 | else | |
3e43a32a MS |
446 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
447 | value); | |
74960c60 VP |
448 | } |
449 | ||
33e5cbd6 PA |
450 | int |
451 | breakpoints_always_inserted_mode (void) | |
452 | { | |
72d0e2c5 YQ |
453 | return (always_inserted_mode == AUTO_BOOLEAN_TRUE |
454 | || (always_inserted_mode == AUTO_BOOLEAN_AUTO && non_stop)); | |
33e5cbd6 | 455 | } |
765dc015 | 456 | |
b775012e LM |
457 | static const char condition_evaluation_both[] = "host or target"; |
458 | ||
459 | /* Modes for breakpoint condition evaluation. */ | |
460 | static const char condition_evaluation_auto[] = "auto"; | |
461 | static const char condition_evaluation_host[] = "host"; | |
462 | static const char condition_evaluation_target[] = "target"; | |
463 | static const char *const condition_evaluation_enums[] = { | |
464 | condition_evaluation_auto, | |
465 | condition_evaluation_host, | |
466 | condition_evaluation_target, | |
467 | NULL | |
468 | }; | |
469 | ||
470 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
471 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
472 | ||
473 | /* Global that we use to display information to the user (gets its value from | |
474 | condition_evaluation_mode_1. */ | |
475 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
476 | ||
477 | /* Translate a condition evaluation mode MODE into either "host" | |
478 | or "target". This is used mostly to translate from "auto" to the | |
479 | real setting that is being used. It returns the translated | |
480 | evaluation mode. */ | |
481 | ||
482 | static const char * | |
483 | translate_condition_evaluation_mode (const char *mode) | |
484 | { | |
485 | if (mode == condition_evaluation_auto) | |
486 | { | |
487 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
488 | return condition_evaluation_target; | |
489 | else | |
490 | return condition_evaluation_host; | |
491 | } | |
492 | else | |
493 | return mode; | |
494 | } | |
495 | ||
496 | /* Discovers what condition_evaluation_auto translates to. */ | |
497 | ||
498 | static const char * | |
499 | breakpoint_condition_evaluation_mode (void) | |
500 | { | |
501 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
502 | } | |
503 | ||
504 | /* Return true if GDB should evaluate breakpoint conditions or false | |
505 | otherwise. */ | |
506 | ||
507 | static int | |
508 | gdb_evaluates_breakpoint_condition_p (void) | |
509 | { | |
510 | const char *mode = breakpoint_condition_evaluation_mode (); | |
511 | ||
512 | return (mode == condition_evaluation_host); | |
513 | } | |
514 | ||
a14ed312 | 515 | void _initialize_breakpoint (void); |
c906108c | 516 | |
c906108c SS |
517 | /* Are we executing breakpoint commands? */ |
518 | static int executing_breakpoint_commands; | |
519 | ||
c02f5703 MS |
520 | /* Are overlay event breakpoints enabled? */ |
521 | static int overlay_events_enabled; | |
522 | ||
e09342b5 TJB |
523 | /* See description in breakpoint.h. */ |
524 | int target_exact_watchpoints = 0; | |
525 | ||
c906108c | 526 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 527 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 528 | current breakpoint. */ |
c906108c | 529 | |
5c44784c | 530 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 531 | |
5c44784c JM |
532 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
533 | for (B = breakpoint_chain; \ | |
534 | B ? (TMP=B->next, 1): 0; \ | |
535 | B = TMP) | |
c906108c | 536 | |
4a64f543 MS |
537 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
538 | not provided so update_global_location_list must not be called | |
539 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 540 | |
876fa593 JK |
541 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
542 | for (BP_TMP = bp_location; \ | |
543 | BP_TMP < bp_location + bp_location_count && (B = *BP_TMP); \ | |
544 | BP_TMP++) | |
7cc221ef | 545 | |
b775012e LM |
546 | /* Iterates through locations with address ADDRESS for the currently selected |
547 | program space. BP_LOCP_TMP points to each object. BP_LOCP_START points | |
548 | to where the loop should start from. | |
549 | If BP_LOCP_START is a NULL pointer, the macro automatically seeks the | |
550 | appropriate location to start with. */ | |
551 | ||
552 | #define ALL_BP_LOCATIONS_AT_ADDR(BP_LOCP_TMP, BP_LOCP_START, ADDRESS) \ | |
553 | for (BP_LOCP_START = BP_LOCP_START == NULL ? get_first_locp_gte_addr (ADDRESS) : BP_LOCP_START, \ | |
554 | BP_LOCP_TMP = BP_LOCP_START; \ | |
555 | BP_LOCP_START \ | |
556 | && (BP_LOCP_TMP < bp_location + bp_location_count \ | |
557 | && (*BP_LOCP_TMP)->address == ADDRESS); \ | |
558 | BP_LOCP_TMP++) | |
559 | ||
1042e4c0 SS |
560 | /* Iterator for tracepoints only. */ |
561 | ||
562 | #define ALL_TRACEPOINTS(B) \ | |
563 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 564 | if (is_tracepoint (B)) |
1042e4c0 | 565 | |
7cc221ef | 566 | /* Chains of all breakpoints defined. */ |
c906108c SS |
567 | |
568 | struct breakpoint *breakpoint_chain; | |
569 | ||
876fa593 JK |
570 | /* Array is sorted by bp_location_compare - primarily by the ADDRESS. */ |
571 | ||
572 | static struct bp_location **bp_location; | |
573 | ||
574 | /* Number of elements of BP_LOCATION. */ | |
575 | ||
576 | static unsigned bp_location_count; | |
577 | ||
4a64f543 MS |
578 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
579 | ADDRESS for the current elements of BP_LOCATION which get a valid | |
580 | result from bp_location_has_shadow. You can use it for roughly | |
581 | limiting the subrange of BP_LOCATION to scan for shadow bytes for | |
582 | an address you need to read. */ | |
876fa593 JK |
583 | |
584 | static CORE_ADDR bp_location_placed_address_before_address_max; | |
585 | ||
4a64f543 MS |
586 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
587 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
588 | BP_LOCATION which get a valid result from bp_location_has_shadow. | |
589 | You can use it for roughly limiting the subrange of BP_LOCATION to | |
590 | scan for shadow bytes for an address you need to read. */ | |
876fa593 JK |
591 | |
592 | static CORE_ADDR bp_location_shadow_len_after_address_max; | |
7cc221ef | 593 | |
4a64f543 MS |
594 | /* The locations that no longer correspond to any breakpoint, unlinked |
595 | from bp_location array, but for which a hit may still be reported | |
596 | by a target. */ | |
20874c92 VP |
597 | VEC(bp_location_p) *moribund_locations = NULL; |
598 | ||
c906108c SS |
599 | /* Number of last breakpoint made. */ |
600 | ||
95a42b64 TT |
601 | static int breakpoint_count; |
602 | ||
86b17b60 PA |
603 | /* The value of `breakpoint_count' before the last command that |
604 | created breakpoints. If the last (break-like) command created more | |
605 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
606 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
607 | static int prev_breakpoint_count; | |
c906108c | 608 | |
1042e4c0 SS |
609 | /* Number of last tracepoint made. */ |
610 | ||
95a42b64 | 611 | static int tracepoint_count; |
1042e4c0 | 612 | |
6149aea9 PA |
613 | static struct cmd_list_element *breakpoint_set_cmdlist; |
614 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 615 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 616 | |
468d015d JJ |
617 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
618 | static int | |
619 | breakpoint_enabled (struct breakpoint *b) | |
620 | { | |
0d381245 | 621 | return (b->enable_state == bp_enabled); |
468d015d JJ |
622 | } |
623 | ||
c906108c SS |
624 | /* Set breakpoint count to NUM. */ |
625 | ||
95a42b64 | 626 | static void |
fba45db2 | 627 | set_breakpoint_count (int num) |
c906108c | 628 | { |
86b17b60 | 629 | prev_breakpoint_count = breakpoint_count; |
c906108c | 630 | breakpoint_count = num; |
4fa62494 | 631 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
632 | } |
633 | ||
86b17b60 PA |
634 | /* Used by `start_rbreak_breakpoints' below, to record the current |
635 | breakpoint count before "rbreak" creates any breakpoint. */ | |
636 | static int rbreak_start_breakpoint_count; | |
637 | ||
95a42b64 TT |
638 | /* Called at the start an "rbreak" command to record the first |
639 | breakpoint made. */ | |
86b17b60 | 640 | |
95a42b64 TT |
641 | void |
642 | start_rbreak_breakpoints (void) | |
643 | { | |
86b17b60 | 644 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
645 | } |
646 | ||
647 | /* Called at the end of an "rbreak" command to record the last | |
648 | breakpoint made. */ | |
86b17b60 | 649 | |
95a42b64 TT |
650 | void |
651 | end_rbreak_breakpoints (void) | |
652 | { | |
86b17b60 | 653 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
654 | } |
655 | ||
4a64f543 | 656 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
657 | |
658 | void | |
fba45db2 | 659 | clear_breakpoint_hit_counts (void) |
c906108c SS |
660 | { |
661 | struct breakpoint *b; | |
662 | ||
663 | ALL_BREAKPOINTS (b) | |
664 | b->hit_count = 0; | |
665 | } | |
666 | ||
9add0f1b TT |
667 | /* Allocate a new counted_command_line with reference count of 1. |
668 | The new structure owns COMMANDS. */ | |
669 | ||
670 | static struct counted_command_line * | |
671 | alloc_counted_command_line (struct command_line *commands) | |
672 | { | |
673 | struct counted_command_line *result | |
674 | = xmalloc (sizeof (struct counted_command_line)); | |
cc59ec59 | 675 | |
9add0f1b TT |
676 | result->refc = 1; |
677 | result->commands = commands; | |
678 | return result; | |
679 | } | |
680 | ||
681 | /* Increment reference count. This does nothing if CMD is NULL. */ | |
682 | ||
683 | static void | |
684 | incref_counted_command_line (struct counted_command_line *cmd) | |
685 | { | |
686 | if (cmd) | |
687 | ++cmd->refc; | |
688 | } | |
689 | ||
690 | /* Decrement reference count. If the reference count reaches 0, | |
691 | destroy the counted_command_line. Sets *CMDP to NULL. This does | |
692 | nothing if *CMDP is NULL. */ | |
693 | ||
694 | static void | |
695 | decref_counted_command_line (struct counted_command_line **cmdp) | |
696 | { | |
697 | if (*cmdp) | |
698 | { | |
699 | if (--(*cmdp)->refc == 0) | |
700 | { | |
701 | free_command_lines (&(*cmdp)->commands); | |
702 | xfree (*cmdp); | |
703 | } | |
704 | *cmdp = NULL; | |
705 | } | |
706 | } | |
707 | ||
708 | /* A cleanup function that calls decref_counted_command_line. */ | |
709 | ||
710 | static void | |
711 | do_cleanup_counted_command_line (void *arg) | |
712 | { | |
713 | decref_counted_command_line (arg); | |
714 | } | |
715 | ||
716 | /* Create a cleanup that calls decref_counted_command_line on the | |
717 | argument. */ | |
718 | ||
719 | static struct cleanup * | |
720 | make_cleanup_decref_counted_command_line (struct counted_command_line **cmdp) | |
721 | { | |
722 | return make_cleanup (do_cleanup_counted_command_line, cmdp); | |
723 | } | |
724 | ||
c906108c | 725 | \f |
48cb2d85 VP |
726 | /* Return the breakpoint with the specified number, or NULL |
727 | if the number does not refer to an existing breakpoint. */ | |
728 | ||
729 | struct breakpoint * | |
730 | get_breakpoint (int num) | |
731 | { | |
732 | struct breakpoint *b; | |
733 | ||
734 | ALL_BREAKPOINTS (b) | |
735 | if (b->number == num) | |
736 | return b; | |
737 | ||
738 | return NULL; | |
739 | } | |
5c44784c | 740 | |
c906108c | 741 | \f |
adc36818 | 742 | |
b775012e LM |
743 | /* Mark locations as "conditions have changed" in case the target supports |
744 | evaluating conditions on its side. */ | |
745 | ||
746 | static void | |
747 | mark_breakpoint_modified (struct breakpoint *b) | |
748 | { | |
749 | struct bp_location *loc; | |
750 | ||
751 | /* This is only meaningful if the target is | |
752 | evaluating conditions and if the user has | |
753 | opted for condition evaluation on the target's | |
754 | side. */ | |
755 | if (gdb_evaluates_breakpoint_condition_p () | |
756 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
757 | return; | |
758 | ||
759 | if (!is_breakpoint (b)) | |
760 | return; | |
761 | ||
762 | for (loc = b->loc; loc; loc = loc->next) | |
763 | loc->condition_changed = condition_modified; | |
764 | } | |
765 | ||
766 | /* Mark location as "conditions have changed" in case the target supports | |
767 | evaluating conditions on its side. */ | |
768 | ||
769 | static void | |
770 | mark_breakpoint_location_modified (struct bp_location *loc) | |
771 | { | |
772 | /* This is only meaningful if the target is | |
773 | evaluating conditions and if the user has | |
774 | opted for condition evaluation on the target's | |
775 | side. */ | |
776 | if (gdb_evaluates_breakpoint_condition_p () | |
777 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
778 | ||
779 | return; | |
780 | ||
781 | if (!is_breakpoint (loc->owner)) | |
782 | return; | |
783 | ||
784 | loc->condition_changed = condition_modified; | |
785 | } | |
786 | ||
787 | /* Sets the condition-evaluation mode using the static global | |
788 | condition_evaluation_mode. */ | |
789 | ||
790 | static void | |
791 | set_condition_evaluation_mode (char *args, int from_tty, | |
792 | struct cmd_list_element *c) | |
793 | { | |
b775012e LM |
794 | const char *old_mode, *new_mode; |
795 | ||
796 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
797 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
798 | { | |
799 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
800 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
801 | "Using host evaluation mode instead.")); | |
802 | return; | |
803 | } | |
804 | ||
805 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
806 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
807 | ||
abf1152a JK |
808 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
809 | settings was "auto". */ | |
810 | condition_evaluation_mode = condition_evaluation_mode_1; | |
811 | ||
b775012e LM |
812 | /* Only update the mode if the user picked a different one. */ |
813 | if (new_mode != old_mode) | |
814 | { | |
815 | struct bp_location *loc, **loc_tmp; | |
816 | /* If the user switched to a different evaluation mode, we | |
817 | need to synch the changes with the target as follows: | |
818 | ||
819 | "host" -> "target": Send all (valid) conditions to the target. | |
820 | "target" -> "host": Remove all the conditions from the target. | |
821 | */ | |
822 | ||
b775012e LM |
823 | if (new_mode == condition_evaluation_target) |
824 | { | |
825 | /* Mark everything modified and synch conditions with the | |
826 | target. */ | |
827 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
828 | mark_breakpoint_location_modified (loc); | |
829 | } | |
830 | else | |
831 | { | |
832 | /* Manually mark non-duplicate locations to synch conditions | |
833 | with the target. We do this to remove all the conditions the | |
834 | target knows about. */ | |
835 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
836 | if (is_breakpoint (loc->owner) && loc->inserted) | |
837 | loc->needs_update = 1; | |
838 | } | |
839 | ||
840 | /* Do the update. */ | |
841 | update_global_location_list (1); | |
842 | } | |
843 | ||
844 | return; | |
845 | } | |
846 | ||
847 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
848 | what "auto" is translating to. */ | |
849 | ||
850 | static void | |
851 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
852 | struct cmd_list_element *c, const char *value) | |
853 | { | |
854 | if (condition_evaluation_mode == condition_evaluation_auto) | |
855 | fprintf_filtered (file, | |
856 | _("Breakpoint condition evaluation " | |
857 | "mode is %s (currently %s).\n"), | |
858 | value, | |
859 | breakpoint_condition_evaluation_mode ()); | |
860 | else | |
861 | fprintf_filtered (file, _("Breakpoint condition evaluation mode is %s.\n"), | |
862 | value); | |
863 | } | |
864 | ||
865 | /* A comparison function for bp_location AP and BP that is used by | |
866 | bsearch. This comparison function only cares about addresses, unlike | |
867 | the more general bp_location_compare function. */ | |
868 | ||
869 | static int | |
870 | bp_location_compare_addrs (const void *ap, const void *bp) | |
871 | { | |
872 | struct bp_location *a = *(void **) ap; | |
873 | struct bp_location *b = *(void **) bp; | |
874 | ||
875 | if (a->address == b->address) | |
876 | return 0; | |
877 | else | |
878 | return ((a->address > b->address) - (a->address < b->address)); | |
879 | } | |
880 | ||
881 | /* Helper function to skip all bp_locations with addresses | |
882 | less than ADDRESS. It returns the first bp_location that | |
883 | is greater than or equal to ADDRESS. If none is found, just | |
884 | return NULL. */ | |
885 | ||
886 | static struct bp_location ** | |
887 | get_first_locp_gte_addr (CORE_ADDR address) | |
888 | { | |
889 | struct bp_location dummy_loc; | |
890 | struct bp_location *dummy_locp = &dummy_loc; | |
891 | struct bp_location **locp_found = NULL; | |
892 | ||
893 | /* Initialize the dummy location's address field. */ | |
894 | memset (&dummy_loc, 0, sizeof (struct bp_location)); | |
895 | dummy_loc.address = address; | |
896 | ||
897 | /* Find a close match to the first location at ADDRESS. */ | |
898 | locp_found = bsearch (&dummy_locp, bp_location, bp_location_count, | |
899 | sizeof (struct bp_location **), | |
900 | bp_location_compare_addrs); | |
901 | ||
902 | /* Nothing was found, nothing left to do. */ | |
903 | if (locp_found == NULL) | |
904 | return NULL; | |
905 | ||
906 | /* We may have found a location that is at ADDRESS but is not the first in the | |
907 | location's list. Go backwards (if possible) and locate the first one. */ | |
908 | while ((locp_found - 1) >= bp_location | |
909 | && (*(locp_found - 1))->address == address) | |
910 | locp_found--; | |
911 | ||
912 | return locp_found; | |
913 | } | |
914 | ||
adc36818 PM |
915 | void |
916 | set_breakpoint_condition (struct breakpoint *b, char *exp, | |
917 | int from_tty) | |
918 | { | |
3a5c3e22 PA |
919 | xfree (b->cond_string); |
920 | b->cond_string = NULL; | |
adc36818 | 921 | |
3a5c3e22 | 922 | if (is_watchpoint (b)) |
adc36818 | 923 | { |
3a5c3e22 PA |
924 | struct watchpoint *w = (struct watchpoint *) b; |
925 | ||
926 | xfree (w->cond_exp); | |
927 | w->cond_exp = NULL; | |
928 | } | |
929 | else | |
930 | { | |
931 | struct bp_location *loc; | |
932 | ||
933 | for (loc = b->loc; loc; loc = loc->next) | |
934 | { | |
935 | xfree (loc->cond); | |
936 | loc->cond = NULL; | |
b775012e LM |
937 | |
938 | /* No need to free the condition agent expression | |
939 | bytecode (if we have one). We will handle this | |
940 | when we go through update_global_location_list. */ | |
3a5c3e22 | 941 | } |
adc36818 | 942 | } |
adc36818 PM |
943 | |
944 | if (*exp == 0) | |
945 | { | |
946 | if (from_tty) | |
947 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
948 | } | |
949 | else | |
950 | { | |
951 | char *arg = exp; | |
cc59ec59 | 952 | |
adc36818 PM |
953 | /* I don't know if it matters whether this is the string the user |
954 | typed in or the decompiled expression. */ | |
955 | b->cond_string = xstrdup (arg); | |
956 | b->condition_not_parsed = 0; | |
957 | ||
958 | if (is_watchpoint (b)) | |
959 | { | |
3a5c3e22 PA |
960 | struct watchpoint *w = (struct watchpoint *) b; |
961 | ||
adc36818 PM |
962 | innermost_block = NULL; |
963 | arg = exp; | |
1bb9788d | 964 | w->cond_exp = parse_exp_1 (&arg, 0, 0, 0); |
adc36818 PM |
965 | if (*arg) |
966 | error (_("Junk at end of expression")); | |
3a5c3e22 | 967 | w->cond_exp_valid_block = innermost_block; |
adc36818 PM |
968 | } |
969 | else | |
970 | { | |
3a5c3e22 PA |
971 | struct bp_location *loc; |
972 | ||
adc36818 PM |
973 | for (loc = b->loc; loc; loc = loc->next) |
974 | { | |
975 | arg = exp; | |
976 | loc->cond = | |
1bb9788d TT |
977 | parse_exp_1 (&arg, loc->address, |
978 | block_for_pc (loc->address), 0); | |
adc36818 PM |
979 | if (*arg) |
980 | error (_("Junk at end of expression")); | |
981 | } | |
982 | } | |
983 | } | |
b775012e LM |
984 | mark_breakpoint_modified (b); |
985 | ||
ef37bb07 | 986 | annotate_breakpoints_changed (); |
8d3788bd | 987 | observer_notify_breakpoint_modified (b); |
adc36818 PM |
988 | } |
989 | ||
d55637df TT |
990 | /* Completion for the "condition" command. */ |
991 | ||
992 | static VEC (char_ptr) * | |
993 | condition_completer (struct cmd_list_element *cmd, char *text, char *word) | |
994 | { | |
995 | char *space; | |
996 | ||
997 | text = skip_spaces (text); | |
998 | space = skip_to_space (text); | |
999 | if (*space == '\0') | |
1000 | { | |
1001 | int len; | |
1002 | struct breakpoint *b; | |
1003 | VEC (char_ptr) *result = NULL; | |
1004 | ||
1005 | if (text[0] == '$') | |
1006 | { | |
1007 | /* We don't support completion of history indices. */ | |
1008 | if (isdigit (text[1])) | |
1009 | return NULL; | |
1010 | return complete_internalvar (&text[1]); | |
1011 | } | |
1012 | ||
1013 | /* We're completing the breakpoint number. */ | |
1014 | len = strlen (text); | |
1015 | ||
1016 | ALL_BREAKPOINTS (b) | |
1017 | { | |
1018 | int single = b->loc->next == NULL; | |
1019 | struct bp_location *loc; | |
1020 | int count = 1; | |
1021 | ||
1022 | for (loc = b->loc; loc; loc = loc->next) | |
1023 | { | |
1024 | char location[50]; | |
1025 | ||
1026 | if (single) | |
8c042590 | 1027 | xsnprintf (location, sizeof (location), "%d", b->number); |
d55637df | 1028 | else |
8c042590 PM |
1029 | xsnprintf (location, sizeof (location), "%d.%d", b->number, |
1030 | count); | |
d55637df TT |
1031 | |
1032 | if (strncmp (location, text, len) == 0) | |
1033 | VEC_safe_push (char_ptr, result, xstrdup (location)); | |
1034 | ||
1035 | ++count; | |
1036 | } | |
1037 | } | |
1038 | ||
1039 | return result; | |
1040 | } | |
1041 | ||
1042 | /* We're completing the expression part. */ | |
1043 | text = skip_spaces (space); | |
1044 | return expression_completer (cmd, text, word); | |
1045 | } | |
1046 | ||
c906108c SS |
1047 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
1048 | ||
1049 | static void | |
fba45db2 | 1050 | condition_command (char *arg, int from_tty) |
c906108c | 1051 | { |
52f0bd74 | 1052 | struct breakpoint *b; |
c906108c | 1053 | char *p; |
52f0bd74 | 1054 | int bnum; |
c906108c SS |
1055 | |
1056 | if (arg == 0) | |
e2e0b3e5 | 1057 | error_no_arg (_("breakpoint number")); |
c906108c SS |
1058 | |
1059 | p = arg; | |
1060 | bnum = get_number (&p); | |
5c44784c | 1061 | if (bnum == 0) |
8a3fe4f8 | 1062 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
1063 | |
1064 | ALL_BREAKPOINTS (b) | |
1065 | if (b->number == bnum) | |
2f069f6f | 1066 | { |
7371cf6d PM |
1067 | /* Check if this breakpoint has a Python object assigned to |
1068 | it, and if it has a definition of the "stop" | |
1069 | method. This method and conditions entered into GDB from | |
1070 | the CLI are mutually exclusive. */ | |
1071 | if (b->py_bp_object | |
1072 | && gdbpy_breakpoint_has_py_cond (b->py_bp_object)) | |
1073 | error (_("Cannot set a condition where a Python 'stop' " | |
1074 | "method has been defined in the breakpoint.")); | |
2566ad2d | 1075 | set_breakpoint_condition (b, p, from_tty); |
b775012e LM |
1076 | |
1077 | if (is_breakpoint (b)) | |
1078 | update_global_location_list (1); | |
1079 | ||
2f069f6f JB |
1080 | return; |
1081 | } | |
c906108c | 1082 | |
8a3fe4f8 | 1083 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
1084 | } |
1085 | ||
a7bdde9e VP |
1086 | /* Check that COMMAND do not contain commands that are suitable |
1087 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1088 | Throw if any such commands is found. */ |
1089 | ||
a7bdde9e VP |
1090 | static void |
1091 | check_no_tracepoint_commands (struct command_line *commands) | |
1092 | { | |
1093 | struct command_line *c; | |
cc59ec59 | 1094 | |
a7bdde9e VP |
1095 | for (c = commands; c; c = c->next) |
1096 | { | |
1097 | int i; | |
1098 | ||
1099 | if (c->control_type == while_stepping_control) | |
3e43a32a MS |
1100 | error (_("The 'while-stepping' command can " |
1101 | "only be used for tracepoints")); | |
a7bdde9e VP |
1102 | |
1103 | for (i = 0; i < c->body_count; ++i) | |
1104 | check_no_tracepoint_commands ((c->body_list)[i]); | |
1105 | ||
1106 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1107 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1108 | command directly. */ |
1109 | if (strstr (c->line, "collect ") == c->line) | |
1110 | error (_("The 'collect' command can only be used for tracepoints")); | |
1111 | ||
51661e93 VP |
1112 | if (strstr (c->line, "teval ") == c->line) |
1113 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1114 | } |
1115 | } | |
1116 | ||
d77f58be SS |
1117 | /* Encapsulate tests for different types of tracepoints. */ |
1118 | ||
d9b3f62e PA |
1119 | static int |
1120 | is_tracepoint_type (enum bptype type) | |
1121 | { | |
1122 | return (type == bp_tracepoint | |
1123 | || type == bp_fast_tracepoint | |
1124 | || type == bp_static_tracepoint); | |
1125 | } | |
1126 | ||
a7bdde9e | 1127 | int |
d77f58be | 1128 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1129 | { |
d9b3f62e | 1130 | return is_tracepoint_type (b->type); |
a7bdde9e | 1131 | } |
d9b3f62e | 1132 | |
e5dd4106 | 1133 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1134 | breakpoint. This function will throw an exception if a problem is |
1135 | found. */ | |
48cb2d85 | 1136 | |
95a42b64 TT |
1137 | static void |
1138 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1139 | struct command_line *commands) | |
48cb2d85 | 1140 | { |
d77f58be | 1141 | if (is_tracepoint (b)) |
a7bdde9e | 1142 | { |
4a64f543 MS |
1143 | /* We need to verify that each top-level element of commands is |
1144 | valid for tracepoints, that there's at most one | |
1145 | while-stepping element, and that while-stepping's body has | |
1146 | valid tracing commands excluding nested while-stepping. */ | |
a7bdde9e VP |
1147 | struct command_line *c; |
1148 | struct command_line *while_stepping = 0; | |
1149 | for (c = commands; c; c = c->next) | |
1150 | { | |
a7bdde9e VP |
1151 | if (c->control_type == while_stepping_control) |
1152 | { | |
1153 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1154 | error (_("The 'while-stepping' command " |
1155 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1156 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1157 | error (_("The 'while-stepping' command " |
1158 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1159 | |
1160 | if (while_stepping) | |
3e43a32a MS |
1161 | error (_("The 'while-stepping' command " |
1162 | "can be used only once")); | |
a7bdde9e VP |
1163 | else |
1164 | while_stepping = c; | |
1165 | } | |
1166 | } | |
1167 | if (while_stepping) | |
1168 | { | |
1169 | struct command_line *c2; | |
1170 | ||
1171 | gdb_assert (while_stepping->body_count == 1); | |
1172 | c2 = while_stepping->body_list[0]; | |
1173 | for (; c2; c2 = c2->next) | |
1174 | { | |
a7bdde9e VP |
1175 | if (c2->control_type == while_stepping_control) |
1176 | error (_("The 'while-stepping' command cannot be nested")); | |
1177 | } | |
1178 | } | |
1179 | } | |
1180 | else | |
1181 | { | |
1182 | check_no_tracepoint_commands (commands); | |
1183 | } | |
95a42b64 TT |
1184 | } |
1185 | ||
0fb4aa4b PA |
1186 | /* Return a vector of all the static tracepoints set at ADDR. The |
1187 | caller is responsible for releasing the vector. */ | |
1188 | ||
1189 | VEC(breakpoint_p) * | |
1190 | static_tracepoints_here (CORE_ADDR addr) | |
1191 | { | |
1192 | struct breakpoint *b; | |
1193 | VEC(breakpoint_p) *found = 0; | |
1194 | struct bp_location *loc; | |
1195 | ||
1196 | ALL_BREAKPOINTS (b) | |
1197 | if (b->type == bp_static_tracepoint) | |
1198 | { | |
1199 | for (loc = b->loc; loc; loc = loc->next) | |
1200 | if (loc->address == addr) | |
1201 | VEC_safe_push(breakpoint_p, found, b); | |
1202 | } | |
1203 | ||
1204 | return found; | |
1205 | } | |
1206 | ||
95a42b64 | 1207 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1208 | validate that only allowed commands are included. */ |
95a42b64 TT |
1209 | |
1210 | void | |
4a64f543 MS |
1211 | breakpoint_set_commands (struct breakpoint *b, |
1212 | struct command_line *commands) | |
95a42b64 TT |
1213 | { |
1214 | validate_commands_for_breakpoint (b, commands); | |
a7bdde9e | 1215 | |
9add0f1b TT |
1216 | decref_counted_command_line (&b->commands); |
1217 | b->commands = alloc_counted_command_line (commands); | |
ef37bb07 | 1218 | annotate_breakpoints_changed (); |
8d3788bd | 1219 | observer_notify_breakpoint_modified (b); |
48cb2d85 VP |
1220 | } |
1221 | ||
45a43567 TT |
1222 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1223 | is not the same as the "silent" that may appear in the breakpoint's | |
1224 | commands. */ | |
1225 | ||
1226 | void | |
1227 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1228 | { | |
1229 | int old_silent = b->silent; | |
1230 | ||
1231 | b->silent = silent; | |
1232 | if (old_silent != silent) | |
8d3788bd | 1233 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1234 | } |
1235 | ||
1236 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1237 | breakpoint work for any thread. */ | |
1238 | ||
1239 | void | |
1240 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1241 | { | |
1242 | int old_thread = b->thread; | |
1243 | ||
1244 | b->thread = thread; | |
1245 | if (old_thread != thread) | |
8d3788bd | 1246 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1247 | } |
1248 | ||
1249 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1250 | breakpoint work for any task. */ | |
1251 | ||
1252 | void | |
1253 | breakpoint_set_task (struct breakpoint *b, int task) | |
1254 | { | |
1255 | int old_task = b->task; | |
1256 | ||
1257 | b->task = task; | |
1258 | if (old_task != task) | |
8d3788bd | 1259 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1260 | } |
1261 | ||
95a42b64 TT |
1262 | void |
1263 | check_tracepoint_command (char *line, void *closure) | |
a7bdde9e VP |
1264 | { |
1265 | struct breakpoint *b = closure; | |
cc59ec59 | 1266 | |
a7bdde9e VP |
1267 | validate_actionline (&line, b); |
1268 | } | |
1269 | ||
95a42b64 TT |
1270 | /* A structure used to pass information through |
1271 | map_breakpoint_numbers. */ | |
1272 | ||
1273 | struct commands_info | |
1274 | { | |
1275 | /* True if the command was typed at a tty. */ | |
1276 | int from_tty; | |
86b17b60 PA |
1277 | |
1278 | /* The breakpoint range spec. */ | |
1279 | char *arg; | |
1280 | ||
95a42b64 TT |
1281 | /* Non-NULL if the body of the commands are being read from this |
1282 | already-parsed command. */ | |
1283 | struct command_line *control; | |
86b17b60 | 1284 | |
95a42b64 TT |
1285 | /* The command lines read from the user, or NULL if they have not |
1286 | yet been read. */ | |
1287 | struct counted_command_line *cmd; | |
1288 | }; | |
1289 | ||
1290 | /* A callback for map_breakpoint_numbers that sets the commands for | |
1291 | commands_command. */ | |
1292 | ||
c906108c | 1293 | static void |
95a42b64 | 1294 | do_map_commands_command (struct breakpoint *b, void *data) |
c906108c | 1295 | { |
95a42b64 | 1296 | struct commands_info *info = data; |
c906108c | 1297 | |
95a42b64 TT |
1298 | if (info->cmd == NULL) |
1299 | { | |
1300 | struct command_line *l; | |
5c44784c | 1301 | |
95a42b64 TT |
1302 | if (info->control != NULL) |
1303 | l = copy_command_lines (info->control->body_list[0]); | |
1304 | else | |
86b17b60 PA |
1305 | { |
1306 | struct cleanup *old_chain; | |
1307 | char *str; | |
c5aa993b | 1308 | |
3e43a32a MS |
1309 | str = xstrprintf (_("Type commands for breakpoint(s) " |
1310 | "%s, one per line."), | |
86b17b60 PA |
1311 | info->arg); |
1312 | ||
1313 | old_chain = make_cleanup (xfree, str); | |
1314 | ||
1315 | l = read_command_lines (str, | |
1316 | info->from_tty, 1, | |
d77f58be | 1317 | (is_tracepoint (b) |
86b17b60 PA |
1318 | ? check_tracepoint_command : 0), |
1319 | b); | |
1320 | ||
1321 | do_cleanups (old_chain); | |
1322 | } | |
a7bdde9e | 1323 | |
95a42b64 TT |
1324 | info->cmd = alloc_counted_command_line (l); |
1325 | } | |
1326 | ||
1327 | /* If a breakpoint was on the list more than once, we don't need to | |
1328 | do anything. */ | |
1329 | if (b->commands != info->cmd) | |
1330 | { | |
1331 | validate_commands_for_breakpoint (b, info->cmd->commands); | |
1332 | incref_counted_command_line (info->cmd); | |
1333 | decref_counted_command_line (&b->commands); | |
1334 | b->commands = info->cmd; | |
ef37bb07 | 1335 | annotate_breakpoints_changed (); |
8d3788bd | 1336 | observer_notify_breakpoint_modified (b); |
c5aa993b | 1337 | } |
95a42b64 TT |
1338 | } |
1339 | ||
1340 | static void | |
4a64f543 MS |
1341 | commands_command_1 (char *arg, int from_tty, |
1342 | struct command_line *control) | |
95a42b64 TT |
1343 | { |
1344 | struct cleanup *cleanups; | |
1345 | struct commands_info info; | |
1346 | ||
1347 | info.from_tty = from_tty; | |
1348 | info.control = control; | |
1349 | info.cmd = NULL; | |
1350 | /* If we read command lines from the user, then `info' will hold an | |
1351 | extra reference to the commands that we must clean up. */ | |
1352 | cleanups = make_cleanup_decref_counted_command_line (&info.cmd); | |
1353 | ||
1354 | if (arg == NULL || !*arg) | |
1355 | { | |
86b17b60 | 1356 | if (breakpoint_count - prev_breakpoint_count > 1) |
4a64f543 MS |
1357 | arg = xstrprintf ("%d-%d", prev_breakpoint_count + 1, |
1358 | breakpoint_count); | |
95a42b64 TT |
1359 | else if (breakpoint_count > 0) |
1360 | arg = xstrprintf ("%d", breakpoint_count); | |
86b17b60 PA |
1361 | else |
1362 | { | |
1363 | /* So that we don't try to free the incoming non-NULL | |
1364 | argument in the cleanup below. Mapping breakpoint | |
1365 | numbers will fail in this case. */ | |
1366 | arg = NULL; | |
1367 | } | |
95a42b64 | 1368 | } |
9766ced4 SS |
1369 | else |
1370 | /* The command loop has some static state, so we need to preserve | |
1371 | our argument. */ | |
1372 | arg = xstrdup (arg); | |
86b17b60 PA |
1373 | |
1374 | if (arg != NULL) | |
1375 | make_cleanup (xfree, arg); | |
1376 | ||
1377 | info.arg = arg; | |
95a42b64 TT |
1378 | |
1379 | map_breakpoint_numbers (arg, do_map_commands_command, &info); | |
1380 | ||
1381 | if (info.cmd == NULL) | |
1382 | error (_("No breakpoints specified.")); | |
1383 | ||
1384 | do_cleanups (cleanups); | |
1385 | } | |
1386 | ||
1387 | static void | |
1388 | commands_command (char *arg, int from_tty) | |
1389 | { | |
1390 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1391 | } |
40c03ae8 EZ |
1392 | |
1393 | /* Like commands_command, but instead of reading the commands from | |
1394 | input stream, takes them from an already parsed command structure. | |
1395 | ||
1396 | This is used by cli-script.c to DTRT with breakpoint commands | |
1397 | that are part of if and while bodies. */ | |
1398 | enum command_control_type | |
1399 | commands_from_control_command (char *arg, struct command_line *cmd) | |
1400 | { | |
95a42b64 TT |
1401 | commands_command_1 (arg, 0, cmd); |
1402 | return simple_control; | |
40c03ae8 | 1403 | } |
876fa593 JK |
1404 | |
1405 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1406 | ||
1407 | static int | |
1408 | bp_location_has_shadow (struct bp_location *bl) | |
1409 | { | |
1410 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1411 | return 0; | |
1412 | if (!bl->inserted) | |
1413 | return 0; | |
1414 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1415 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1416 | return 0; |
1417 | return 1; | |
1418 | } | |
1419 | ||
8defab1a | 1420 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1421 | by replacing any memory breakpoints with their shadowed contents. |
1422 | ||
35c63cd8 JB |
1423 | If READBUF is not NULL, this buffer must not overlap with any of |
1424 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1425 | a failed assertion internal error will be raised. | |
1426 | ||
876fa593 | 1427 | The range of shadowed area by each bp_location is: |
35df4500 TJB |
1428 | bl->address - bp_location_placed_address_before_address_max |
1429 | up to bl->address + bp_location_shadow_len_after_address_max | |
876fa593 JK |
1430 | The range we were requested to resolve shadows for is: |
1431 | memaddr ... memaddr + len | |
1432 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 TJB |
1433 | memaddr + len <= (bl->address |
1434 | - bp_location_placed_address_before_address_max) | |
876fa593 | 1435 | and: |
35df4500 | 1436 | bl->address + bp_location_shadow_len_after_address_max <= memaddr */ |
c906108c | 1437 | |
8defab1a | 1438 | void |
f0ba3972 PA |
1439 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1440 | const gdb_byte *writebuf_org, | |
1441 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1442 | { |
4a64f543 MS |
1443 | /* Left boundary, right boundary and median element of our binary |
1444 | search. */ | |
876fa593 JK |
1445 | unsigned bc_l, bc_r, bc; |
1446 | ||
4a64f543 MS |
1447 | /* Find BC_L which is a leftmost element which may affect BUF |
1448 | content. It is safe to report lower value but a failure to | |
1449 | report higher one. */ | |
876fa593 JK |
1450 | |
1451 | bc_l = 0; | |
1452 | bc_r = bp_location_count; | |
1453 | while (bc_l + 1 < bc_r) | |
1454 | { | |
35df4500 | 1455 | struct bp_location *bl; |
876fa593 JK |
1456 | |
1457 | bc = (bc_l + bc_r) / 2; | |
35df4500 | 1458 | bl = bp_location[bc]; |
876fa593 | 1459 | |
4a64f543 MS |
1460 | /* Check first BL->ADDRESS will not overflow due to the added |
1461 | constant. Then advance the left boundary only if we are sure | |
1462 | the BC element can in no way affect the BUF content (MEMADDR | |
1463 | to MEMADDR + LEN range). | |
876fa593 | 1464 | |
4a64f543 MS |
1465 | Use the BP_LOCATION_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
1466 | offset so that we cannot miss a breakpoint with its shadow | |
1467 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1468 | |
35df4500 TJB |
1469 | if ((bl->address + bp_location_shadow_len_after_address_max |
1470 | >= bl->address) | |
1471 | && (bl->address + bp_location_shadow_len_after_address_max | |
1472 | <= memaddr)) | |
876fa593 JK |
1473 | bc_l = bc; |
1474 | else | |
1475 | bc_r = bc; | |
1476 | } | |
1477 | ||
128070bb PA |
1478 | /* Due to the binary search above, we need to make sure we pick the |
1479 | first location that's at BC_L's address. E.g., if there are | |
1480 | multiple locations at the same address, BC_L may end up pointing | |
1481 | at a duplicate location, and miss the "master"/"inserted" | |
1482 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1483 | B: | |
1484 | ||
1485 | L1@A, L2@A, L3@B, ... | |
1486 | ||
1487 | BC_L could end up pointing at location L2, while the "master" | |
1488 | location could be L1. Since the `loc->inserted' flag is only set | |
1489 | on "master" locations, we'd forget to restore the shadow of L1 | |
1490 | and L2. */ | |
1491 | while (bc_l > 0 | |
1492 | && bp_location[bc_l]->address == bp_location[bc_l - 1]->address) | |
1493 | bc_l--; | |
1494 | ||
876fa593 JK |
1495 | /* Now do full processing of the found relevant range of elements. */ |
1496 | ||
1497 | for (bc = bc_l; bc < bp_location_count; bc++) | |
c5aa993b | 1498 | { |
35df4500 | 1499 | struct bp_location *bl = bp_location[bc]; |
876fa593 JK |
1500 | CORE_ADDR bp_addr = 0; |
1501 | int bp_size = 0; | |
1502 | int bptoffset = 0; | |
1503 | ||
35df4500 TJB |
1504 | /* bp_location array has BL->OWNER always non-NULL. */ |
1505 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1506 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1507 | bl->owner->number); |
ffce0d52 | 1508 | |
e5dd4106 | 1509 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1510 | content. */ |
1511 | ||
35df4500 TJB |
1512 | if (bl->address >= bp_location_placed_address_before_address_max |
1513 | && memaddr + len <= (bl->address | |
1514 | - bp_location_placed_address_before_address_max)) | |
876fa593 JK |
1515 | break; |
1516 | ||
35df4500 | 1517 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1518 | continue; |
35df4500 | 1519 | if (!breakpoint_address_match (bl->target_info.placed_address_space, 0, |
6c95b8df PA |
1520 | current_program_space->aspace, 0)) |
1521 | continue; | |
1522 | ||
c5aa993b JM |
1523 | /* Addresses and length of the part of the breakpoint that |
1524 | we need to copy. */ | |
35df4500 TJB |
1525 | bp_addr = bl->target_info.placed_address; |
1526 | bp_size = bl->target_info.shadow_len; | |
8defab1a | 1527 | |
c5aa993b JM |
1528 | if (bp_addr + bp_size <= memaddr) |
1529 | /* The breakpoint is entirely before the chunk of memory we | |
1530 | are reading. */ | |
1531 | continue; | |
8defab1a | 1532 | |
c5aa993b JM |
1533 | if (bp_addr >= memaddr + len) |
1534 | /* The breakpoint is entirely after the chunk of memory we are | |
4a64f543 | 1535 | reading. */ |
c5aa993b | 1536 | continue; |
c5aa993b | 1537 | |
8defab1a DJ |
1538 | /* Offset within shadow_contents. */ |
1539 | if (bp_addr < memaddr) | |
1540 | { | |
1541 | /* Only copy the second part of the breakpoint. */ | |
1542 | bp_size -= memaddr - bp_addr; | |
1543 | bptoffset = memaddr - bp_addr; | |
1544 | bp_addr = memaddr; | |
1545 | } | |
c5aa993b | 1546 | |
8defab1a DJ |
1547 | if (bp_addr + bp_size > memaddr + len) |
1548 | { | |
1549 | /* Only copy the first part of the breakpoint. */ | |
1550 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1551 | } | |
c5aa993b | 1552 | |
f0ba3972 PA |
1553 | if (readbuf != NULL) |
1554 | { | |
35c63cd8 JB |
1555 | /* Verify that the readbuf buffer does not overlap with |
1556 | the shadow_contents buffer. */ | |
1557 | gdb_assert (bl->target_info.shadow_contents >= readbuf + len | |
1558 | || readbuf >= (bl->target_info.shadow_contents | |
1559 | + bl->target_info.shadow_len)); | |
1560 | ||
f0ba3972 PA |
1561 | /* Update the read buffer with this inserted breakpoint's |
1562 | shadow. */ | |
1563 | memcpy (readbuf + bp_addr - memaddr, | |
1564 | bl->target_info.shadow_contents + bptoffset, bp_size); | |
1565 | } | |
1566 | else | |
1567 | { | |
1568 | struct gdbarch *gdbarch = bl->gdbarch; | |
1569 | const unsigned char *bp; | |
1570 | CORE_ADDR placed_address = bl->target_info.placed_address; | |
1571 | unsigned placed_size = bl->target_info.placed_size; | |
1572 | ||
1573 | /* Update the shadow with what we want to write to memory. */ | |
1574 | memcpy (bl->target_info.shadow_contents + bptoffset, | |
1575 | writebuf_org + bp_addr - memaddr, bp_size); | |
1576 | ||
1577 | /* Determine appropriate breakpoint contents and size for this | |
1578 | address. */ | |
1579 | bp = gdbarch_breakpoint_from_pc (gdbarch, &placed_address, &placed_size); | |
1580 | ||
1581 | /* Update the final write buffer with this inserted | |
1582 | breakpoint's INSN. */ | |
1583 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1584 | } | |
c5aa993b | 1585 | } |
c906108c | 1586 | } |
c906108c | 1587 | \f |
c5aa993b | 1588 | |
b775012e LM |
1589 | /* Return true if BPT is either a software breakpoint or a hardware |
1590 | breakpoint. */ | |
1591 | ||
1592 | int | |
1593 | is_breakpoint (const struct breakpoint *bpt) | |
1594 | { | |
1595 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1596 | || bpt->type == bp_hardware_breakpoint |
1597 | || bpt->type == bp_dprintf); | |
b775012e LM |
1598 | } |
1599 | ||
60e1c644 PA |
1600 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1601 | ||
a5606eee | 1602 | static int |
d77f58be | 1603 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1604 | { |
1605 | return (bpt->type == bp_hardware_watchpoint | |
1606 | || bpt->type == bp_read_watchpoint | |
1607 | || bpt->type == bp_access_watchpoint); | |
1608 | } | |
7270d8f2 | 1609 | |
60e1c644 PA |
1610 | /* Return true if BPT is of any watchpoint kind, hardware or |
1611 | software. */ | |
1612 | ||
3a5c3e22 | 1613 | int |
d77f58be | 1614 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1615 | { |
1616 | return (is_hardware_watchpoint (bpt) | |
1617 | || bpt->type == bp_watchpoint); | |
1618 | } | |
1619 | ||
3a5c3e22 PA |
1620 | /* Returns true if the current thread and its running state are safe |
1621 | to evaluate or update watchpoint B. Watchpoints on local | |
1622 | expressions need to be evaluated in the context of the thread that | |
1623 | was current when the watchpoint was created, and, that thread needs | |
1624 | to be stopped to be able to select the correct frame context. | |
1625 | Watchpoints on global expressions can be evaluated on any thread, | |
1626 | and in any state. It is presently left to the target allowing | |
1627 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1628 | |
1629 | static int | |
3a5c3e22 | 1630 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1631 | { |
d0d8b0c6 JK |
1632 | return (b->base.pspace == current_program_space |
1633 | && (ptid_equal (b->watchpoint_thread, null_ptid) | |
1634 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1635 | && !is_executing (inferior_ptid)))); | |
f6bc2008 PA |
1636 | } |
1637 | ||
d0fb5eae JK |
1638 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1639 | associated bp_watchpoint_scope breakpoint. */ | |
1640 | ||
1641 | static void | |
3a5c3e22 | 1642 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1643 | { |
3a5c3e22 | 1644 | struct breakpoint *b = &w->base; |
d0fb5eae JK |
1645 | |
1646 | if (b->related_breakpoint != b) | |
1647 | { | |
1648 | gdb_assert (b->related_breakpoint->type == bp_watchpoint_scope); | |
1649 | gdb_assert (b->related_breakpoint->related_breakpoint == b); | |
1650 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1651 | b->related_breakpoint->related_breakpoint = b->related_breakpoint; | |
1652 | b->related_breakpoint = b; | |
1653 | } | |
1654 | b->disposition = disp_del_at_next_stop; | |
1655 | } | |
1656 | ||
567e1b4e JB |
1657 | /* Assuming that B is a watchpoint: |
1658 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1659 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1660 | - Evaluate the condition if there is one, and store the result |
1661 | in b->loc->cond. | |
a5606eee VP |
1662 | - Update the list of values that must be watched in B->loc. |
1663 | ||
4a64f543 MS |
1664 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1665 | nothing. If this is local watchpoint that is out of scope, delete | |
1666 | it. | |
1667 | ||
1668 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1669 | removed + inserted on each stop here. Normal breakpoints must | |
1670 | never be removed because they might be missed by a running thread | |
1671 | when debugging in non-stop mode. On the other hand, hardware | |
1672 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1673 | to each LWP since they are stored in each LWP's hardware debug | |
1674 | registers. Therefore, such LWP must be stopped first in order to | |
1675 | be able to modify its hardware watchpoints. | |
1676 | ||
1677 | Hardware watchpoints must be reset exactly once after being | |
1678 | presented to the user. It cannot be done sooner, because it would | |
1679 | reset the data used to present the watchpoint hit to the user. And | |
1680 | it must not be done later because it could display the same single | |
1681 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1682 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1683 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1684 | not user-visible - its hit is suppressed if the memory content has | |
1685 | not changed. | |
1686 | ||
1687 | The following constraints influence the location where we can reset | |
1688 | hardware watchpoints: | |
1689 | ||
1690 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1691 | called several times when GDB stops. | |
1692 | ||
1693 | [linux] | |
1694 | * Multiple hardware watchpoints can be hit at the same time, | |
1695 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1696 | hit at a time as the reason for stopping, and all the other hits | |
1697 | are presented later, one after the other, each time the user | |
1698 | requests the execution to be resumed. Execution is not resumed | |
1699 | for the threads still having pending hit event stored in | |
1700 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1701 | the inferior on the first stop the thread hit event is kept being | |
1702 | reported from its cached value by linux_nat_stopped_data_address | |
1703 | until the real thread resume happens after the watchpoint gets | |
1704 | presented and thus its LWP_INFO->STATUS gets reset. | |
1705 | ||
1706 | Therefore the hardware watchpoint hit can get safely reset on the | |
1707 | watchpoint removal from inferior. */ | |
a79d3c27 | 1708 | |
b40ce68a | 1709 | static void |
3a5c3e22 | 1710 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1711 | { |
a5606eee | 1712 | int within_current_scope; |
a5606eee | 1713 | struct frame_id saved_frame_id; |
66076460 | 1714 | int frame_saved; |
a5606eee | 1715 | |
f6bc2008 PA |
1716 | /* If this is a local watchpoint, we only want to check if the |
1717 | watchpoint frame is in scope if the current thread is the thread | |
1718 | that was used to create the watchpoint. */ | |
1719 | if (!watchpoint_in_thread_scope (b)) | |
1720 | return; | |
1721 | ||
3a5c3e22 | 1722 | if (b->base.disposition == disp_del_at_next_stop) |
a5606eee VP |
1723 | return; |
1724 | ||
66076460 | 1725 | frame_saved = 0; |
a5606eee VP |
1726 | |
1727 | /* Determine if the watchpoint is within scope. */ | |
1728 | if (b->exp_valid_block == NULL) | |
1729 | within_current_scope = 1; | |
1730 | else | |
1731 | { | |
b5db5dfc UW |
1732 | struct frame_info *fi = get_current_frame (); |
1733 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1734 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1735 | ||
1736 | /* If we're in a function epilogue, unwinding may not work | |
1737 | properly, so do not attempt to recreate locations at this | |
1738 | point. See similar comments in watchpoint_check. */ | |
1739 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) | |
1740 | return; | |
66076460 DJ |
1741 | |
1742 | /* Save the current frame's ID so we can restore it after | |
1743 | evaluating the watchpoint expression on its own frame. */ | |
1744 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1745 | took a frame parameter, so that we didn't have to change the | |
1746 | selected frame. */ | |
1747 | frame_saved = 1; | |
1748 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1749 | ||
a5606eee VP |
1750 | fi = frame_find_by_id (b->watchpoint_frame); |
1751 | within_current_scope = (fi != NULL); | |
1752 | if (within_current_scope) | |
1753 | select_frame (fi); | |
1754 | } | |
1755 | ||
b5db5dfc UW |
1756 | /* We don't free locations. They are stored in the bp_location array |
1757 | and update_global_location_list will eventually delete them and | |
1758 | remove breakpoints if needed. */ | |
3a5c3e22 | 1759 | b->base.loc = NULL; |
b5db5dfc | 1760 | |
a5606eee VP |
1761 | if (within_current_scope && reparse) |
1762 | { | |
1763 | char *s; | |
d63d0675 | 1764 | |
a5606eee VP |
1765 | if (b->exp) |
1766 | { | |
1767 | xfree (b->exp); | |
1768 | b->exp = NULL; | |
1769 | } | |
d63d0675 | 1770 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
1bb9788d | 1771 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1772 | /* If the meaning of expression itself changed, the old value is |
1773 | no longer relevant. We don't want to report a watchpoint hit | |
1774 | to the user when the old value and the new value may actually | |
1775 | be completely different objects. */ | |
1776 | value_free (b->val); | |
fa4727a6 DJ |
1777 | b->val = NULL; |
1778 | b->val_valid = 0; | |
60e1c644 PA |
1779 | |
1780 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1781 | expression is stored in the breakpoint object, not in the | |
1782 | locations (re)created below. */ | |
3a5c3e22 | 1783 | if (b->base.cond_string != NULL) |
60e1c644 PA |
1784 | { |
1785 | if (b->cond_exp != NULL) | |
1786 | { | |
1787 | xfree (b->cond_exp); | |
1788 | b->cond_exp = NULL; | |
1789 | } | |
1790 | ||
3a5c3e22 | 1791 | s = b->base.cond_string; |
1bb9788d | 1792 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 1793 | } |
a5606eee | 1794 | } |
a5606eee VP |
1795 | |
1796 | /* If we failed to parse the expression, for example because | |
1797 | it refers to a global variable in a not-yet-loaded shared library, | |
1798 | don't try to insert watchpoint. We don't automatically delete | |
1799 | such watchpoint, though, since failure to parse expression | |
1800 | is different from out-of-scope watchpoint. */ | |
2d134ed3 PA |
1801 | if ( !target_has_execution) |
1802 | { | |
1803 | /* Without execution, memory can't change. No use to try and | |
1804 | set watchpoint locations. The watchpoint will be reset when | |
1805 | the target gains execution, through breakpoint_re_set. */ | |
1806 | } | |
1807 | else if (within_current_scope && b->exp) | |
a5606eee | 1808 | { |
0cf6dd15 | 1809 | int pc = 0; |
fa4727a6 | 1810 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1811 | struct program_space *frame_pspace; |
a5606eee | 1812 | |
0cf6dd15 | 1813 | fetch_subexp_value (b->exp, &pc, &v, &result, &val_chain); |
a5606eee | 1814 | |
a5606eee VP |
1815 | /* Avoid setting b->val if it's already set. The meaning of |
1816 | b->val is 'the last value' user saw, and we should update | |
1817 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1818 | happens, the code that reports it updates b->val directly. |
1819 | We don't keep track of the memory value for masked | |
1820 | watchpoints. */ | |
3a5c3e22 | 1821 | if (!b->val_valid && !is_masked_watchpoint (&b->base)) |
fa4727a6 DJ |
1822 | { |
1823 | b->val = v; | |
1824 | b->val_valid = 1; | |
1825 | } | |
a5606eee | 1826 | |
2d134ed3 PA |
1827 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1828 | ||
a5606eee | 1829 | /* Look at each value on the value chain. */ |
9fa40276 | 1830 | for (v = val_chain; v; v = value_next (v)) |
a5606eee VP |
1831 | { |
1832 | /* If it's a memory location, and GDB actually needed | |
1833 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1834 | must watch it. If the first value returned is |
1835 | still lazy, that means an error occurred reading it; | |
1836 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1837 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1838 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1839 | { |
1840 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1841 | |
a5606eee VP |
1842 | /* We only watch structs and arrays if user asked |
1843 | for it explicitly, never if they just happen to | |
1844 | appear in the middle of some value chain. */ | |
fa4727a6 | 1845 | if (v == result |
a5606eee VP |
1846 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1847 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1848 | { | |
1849 | CORE_ADDR addr; | |
744a8059 | 1850 | int type; |
a5606eee VP |
1851 | struct bp_location *loc, **tmp; |
1852 | ||
42ae5230 | 1853 | addr = value_address (v); |
a5606eee | 1854 | type = hw_write; |
3a5c3e22 | 1855 | if (b->base.type == bp_read_watchpoint) |
a5606eee | 1856 | type = hw_read; |
3a5c3e22 | 1857 | else if (b->base.type == bp_access_watchpoint) |
a5606eee | 1858 | type = hw_access; |
3a5c3e22 PA |
1859 | |
1860 | loc = allocate_bp_location (&b->base); | |
1861 | for (tmp = &(b->base.loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
1862 | ; |
1863 | *tmp = loc; | |
a6d9a66e | 1864 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1865 | |
1866 | loc->pspace = frame_pspace; | |
a5606eee | 1867 | loc->address = addr; |
744a8059 | 1868 | loc->length = TYPE_LENGTH (value_type (v)); |
a5606eee VP |
1869 | loc->watchpoint_type = type; |
1870 | } | |
1871 | } | |
9fa40276 TJB |
1872 | } |
1873 | ||
1874 | /* Change the type of breakpoint between hardware assisted or | |
1875 | an ordinary watchpoint depending on the hardware support | |
1876 | and free hardware slots. REPARSE is set when the inferior | |
1877 | is started. */ | |
a9634178 | 1878 | if (reparse) |
9fa40276 | 1879 | { |
e09342b5 | 1880 | int reg_cnt; |
9fa40276 TJB |
1881 | enum bp_loc_type loc_type; |
1882 | struct bp_location *bl; | |
a5606eee | 1883 | |
a9634178 | 1884 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
1885 | |
1886 | if (reg_cnt) | |
9fa40276 TJB |
1887 | { |
1888 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 1889 | enum bptype type; |
9fa40276 | 1890 | |
a9634178 TJB |
1891 | /* Use an exact watchpoint when there's only one memory region to be |
1892 | watched, and only one debug register is needed to watch it. */ | |
1893 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
1894 | ||
9fa40276 | 1895 | /* We need to determine how many resources are already |
e09342b5 TJB |
1896 | used for all other hardware watchpoints plus this one |
1897 | to see if we still have enough resources to also fit | |
a1398e0c PA |
1898 | this watchpoint in as well. */ |
1899 | ||
1900 | /* If this is a software watchpoint, we try to turn it | |
1901 | to a hardware one -- count resources as if B was of | |
1902 | hardware watchpoint type. */ | |
1903 | type = b->base.type; | |
1904 | if (type == bp_watchpoint) | |
1905 | type = bp_hardware_watchpoint; | |
1906 | ||
1907 | /* This watchpoint may or may not have been placed on | |
1908 | the list yet at this point (it won't be in the list | |
1909 | if we're trying to create it for the first time, | |
1910 | through watch_command), so always account for it | |
1911 | manually. */ | |
1912 | ||
1913 | /* Count resources used by all watchpoints except B. */ | |
1914 | i = hw_watchpoint_used_count_others (&b->base, type, &other_type_used); | |
1915 | ||
1916 | /* Add in the resources needed for B. */ | |
1917 | i += hw_watchpoint_use_count (&b->base); | |
1918 | ||
1919 | target_resources_ok | |
1920 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 1921 | if (target_resources_ok <= 0) |
a9634178 | 1922 | { |
3a5c3e22 | 1923 | int sw_mode = b->base.ops->works_in_software_mode (&b->base); |
9c06b0b4 TJB |
1924 | |
1925 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
1926 | error (_("Target does not support this type of " |
1927 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
1928 | else if (target_resources_ok < 0 && !sw_mode) |
1929 | error (_("There are not enough available hardware " | |
1930 | "resources for this watchpoint.")); | |
a1398e0c PA |
1931 | |
1932 | /* Downgrade to software watchpoint. */ | |
1933 | b->base.type = bp_watchpoint; | |
1934 | } | |
1935 | else | |
1936 | { | |
1937 | /* If this was a software watchpoint, we've just | |
1938 | found we have enough resources to turn it to a | |
1939 | hardware watchpoint. Otherwise, this is a | |
1940 | nop. */ | |
1941 | b->base.type = type; | |
a9634178 | 1942 | } |
9fa40276 | 1943 | } |
3a5c3e22 | 1944 | else if (!b->base.ops->works_in_software_mode (&b->base)) |
a9634178 TJB |
1945 | error (_("Expression cannot be implemented with " |
1946 | "read/access watchpoint.")); | |
9fa40276 | 1947 | else |
3a5c3e22 | 1948 | b->base.type = bp_watchpoint; |
9fa40276 | 1949 | |
3a5c3e22 | 1950 | loc_type = (b->base.type == bp_watchpoint? bp_loc_other |
9fa40276 | 1951 | : bp_loc_hardware_watchpoint); |
3a5c3e22 | 1952 | for (bl = b->base.loc; bl; bl = bl->next) |
9fa40276 TJB |
1953 | bl->loc_type = loc_type; |
1954 | } | |
1955 | ||
1956 | for (v = val_chain; v; v = next) | |
1957 | { | |
a5606eee VP |
1958 | next = value_next (v); |
1959 | if (v != b->val) | |
1960 | value_free (v); | |
1961 | } | |
1962 | ||
c7437ca6 PA |
1963 | /* If a software watchpoint is not watching any memory, then the |
1964 | above left it without any location set up. But, | |
1965 | bpstat_stop_status requires a location to be able to report | |
1966 | stops, so make sure there's at least a dummy one. */ | |
3a5c3e22 | 1967 | if (b->base.type == bp_watchpoint && b->base.loc == NULL) |
c7437ca6 | 1968 | { |
3a5c3e22 PA |
1969 | struct breakpoint *base = &b->base; |
1970 | base->loc = allocate_bp_location (base); | |
1971 | base->loc->pspace = frame_pspace; | |
1972 | base->loc->address = -1; | |
1973 | base->loc->length = -1; | |
1974 | base->loc->watchpoint_type = -1; | |
c7437ca6 | 1975 | } |
a5606eee VP |
1976 | } |
1977 | else if (!within_current_scope) | |
7270d8f2 | 1978 | { |
ac74f770 MS |
1979 | printf_filtered (_("\ |
1980 | Watchpoint %d deleted because the program has left the block\n\ | |
1981 | in which its expression is valid.\n"), | |
3a5c3e22 | 1982 | b->base.number); |
d0fb5eae | 1983 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 1984 | } |
a5606eee VP |
1985 | |
1986 | /* Restore the selected frame. */ | |
66076460 DJ |
1987 | if (frame_saved) |
1988 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1989 | } |
1990 | ||
a5606eee | 1991 | |
74960c60 | 1992 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
1993 | inserted in the inferior. We don't differentiate the type of BL's owner |
1994 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
1995 | breakpoint_ops is not defined, because in insert_bp_location, | |
1996 | tracepoint's insert_location will not be called. */ | |
74960c60 | 1997 | static int |
35df4500 | 1998 | should_be_inserted (struct bp_location *bl) |
74960c60 | 1999 | { |
35df4500 | 2000 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
2001 | return 0; |
2002 | ||
35df4500 | 2003 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
2004 | return 0; |
2005 | ||
35df4500 | 2006 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
2007 | return 0; |
2008 | ||
f8eba3c6 TT |
2009 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
2010 | return 0; | |
2011 | ||
56710373 PA |
2012 | /* This is set for example, when we're attached to the parent of a |
2013 | vfork, and have detached from the child. The child is running | |
2014 | free, and we expect it to do an exec or exit, at which point the | |
2015 | OS makes the parent schedulable again (and the target reports | |
2016 | that the vfork is done). Until the child is done with the shared | |
2017 | memory region, do not insert breakpoints in the parent, otherwise | |
2018 | the child could still trip on the parent's breakpoints. Since | |
2019 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2020 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2021 | return 0; |
2022 | ||
74960c60 VP |
2023 | return 1; |
2024 | } | |
2025 | ||
934709f0 PW |
2026 | /* Same as should_be_inserted but does the check assuming |
2027 | that the location is not duplicated. */ | |
2028 | ||
2029 | static int | |
2030 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2031 | { | |
2032 | int result; | |
2033 | const int save_duplicate = bl->duplicate; | |
2034 | ||
2035 | bl->duplicate = 0; | |
2036 | result = should_be_inserted (bl); | |
2037 | bl->duplicate = save_duplicate; | |
2038 | return result; | |
2039 | } | |
2040 | ||
b775012e LM |
2041 | /* Parses a conditional described by an expression COND into an |
2042 | agent expression bytecode suitable for evaluation | |
2043 | by the bytecode interpreter. Return NULL if there was | |
2044 | any error during parsing. */ | |
2045 | ||
2046 | static struct agent_expr * | |
2047 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) | |
2048 | { | |
2049 | struct agent_expr *aexpr = NULL; | |
2050 | struct cleanup *old_chain = NULL; | |
2051 | volatile struct gdb_exception ex; | |
2052 | ||
2053 | if (!cond) | |
2054 | return NULL; | |
2055 | ||
2056 | /* We don't want to stop processing, so catch any errors | |
2057 | that may show up. */ | |
2058 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
2059 | { | |
2060 | aexpr = gen_eval_for_expr (scope, cond); | |
2061 | } | |
2062 | ||
2063 | if (ex.reason < 0) | |
2064 | { | |
2065 | /* If we got here, it means the condition could not be parsed to a valid | |
2066 | bytecode expression and thus can't be evaluated on the target's side. | |
2067 | It's no use iterating through the conditions. */ | |
2068 | return NULL; | |
2069 | } | |
2070 | ||
2071 | /* We have a valid agent expression. */ | |
2072 | return aexpr; | |
2073 | } | |
2074 | ||
2075 | /* Based on location BL, create a list of breakpoint conditions to be | |
2076 | passed on to the target. If we have duplicated locations with different | |
2077 | conditions, we will add such conditions to the list. The idea is that the | |
2078 | target will evaluate the list of conditions and will only notify GDB when | |
2079 | one of them is true. */ | |
2080 | ||
2081 | static void | |
2082 | build_target_condition_list (struct bp_location *bl) | |
2083 | { | |
2084 | struct bp_location **locp = NULL, **loc2p; | |
2085 | int null_condition_or_parse_error = 0; | |
2086 | int modified = bl->needs_update; | |
2087 | struct bp_location *loc; | |
2088 | ||
2089 | /* This is only meaningful if the target is | |
2090 | evaluating conditions and if the user has | |
2091 | opted for condition evaluation on the target's | |
2092 | side. */ | |
2093 | if (gdb_evaluates_breakpoint_condition_p () | |
2094 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2095 | return; | |
2096 | ||
2097 | /* Do a first pass to check for locations with no assigned | |
2098 | conditions or conditions that fail to parse to a valid agent expression | |
2099 | bytecode. If any of these happen, then it's no use to send conditions | |
2100 | to the target since this location will always trigger and generate a | |
2101 | response back to GDB. */ | |
2102 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2103 | { | |
2104 | loc = (*loc2p); | |
2105 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2106 | { | |
2107 | if (modified) | |
2108 | { | |
2109 | struct agent_expr *aexpr; | |
2110 | ||
2111 | /* Re-parse the conditions since something changed. In that | |
2112 | case we already freed the condition bytecodes (see | |
2113 | force_breakpoint_reinsertion). We just | |
2114 | need to parse the condition to bytecodes again. */ | |
2115 | aexpr = parse_cond_to_aexpr (bl->address, loc->cond); | |
2116 | loc->cond_bytecode = aexpr; | |
2117 | ||
2118 | /* Check if we managed to parse the conditional expression | |
2119 | correctly. If not, we will not send this condition | |
2120 | to the target. */ | |
2121 | if (aexpr) | |
2122 | continue; | |
2123 | } | |
2124 | ||
2125 | /* If we have a NULL bytecode expression, it means something | |
2126 | went wrong or we have a null condition expression. */ | |
2127 | if (!loc->cond_bytecode) | |
2128 | { | |
2129 | null_condition_or_parse_error = 1; | |
2130 | break; | |
2131 | } | |
2132 | } | |
2133 | } | |
2134 | ||
2135 | /* If any of these happened, it means we will have to evaluate the conditions | |
2136 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2137 | for all the other duplicate locations, thus we free all of them here. | |
2138 | ||
2139 | This is so we have a finer control over which locations' conditions are | |
2140 | being evaluated by GDB or the remote stub. */ | |
2141 | if (null_condition_or_parse_error) | |
2142 | { | |
2143 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2144 | { | |
2145 | loc = (*loc2p); | |
2146 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2147 | { | |
2148 | /* Only go as far as the first NULL bytecode is | |
2149 | located. */ | |
2150 | if (!loc->cond_bytecode) | |
2151 | return; | |
2152 | ||
2153 | free_agent_expr (loc->cond_bytecode); | |
2154 | loc->cond_bytecode = NULL; | |
2155 | } | |
2156 | } | |
2157 | } | |
2158 | ||
2159 | /* No NULL conditions or failed bytecode generation. Build a condition list | |
2160 | for this location's address. */ | |
2161 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2162 | { | |
2163 | loc = (*loc2p); | |
2164 | if (loc->cond | |
2165 | && is_breakpoint (loc->owner) | |
2166 | && loc->pspace->num == bl->pspace->num | |
2167 | && loc->owner->enable_state == bp_enabled | |
2168 | && loc->enabled) | |
2169 | /* Add the condition to the vector. This will be used later to send the | |
2170 | conditions to the target. */ | |
2171 | VEC_safe_push (agent_expr_p, bl->target_info.conditions, | |
2172 | loc->cond_bytecode); | |
2173 | } | |
2174 | ||
2175 | return; | |
2176 | } | |
2177 | ||
d3ce09f5 SS |
2178 | /* Parses a command described by string CMD into an agent expression |
2179 | bytecode suitable for evaluation by the bytecode interpreter. | |
2180 | Return NULL if there was any error during parsing. */ | |
2181 | ||
2182 | static struct agent_expr * | |
2183 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) | |
2184 | { | |
2185 | struct cleanup *old_cleanups = 0; | |
2186 | struct expression *expr, **argvec; | |
2187 | struct agent_expr *aexpr = NULL; | |
2188 | struct cleanup *old_chain = NULL; | |
2189 | volatile struct gdb_exception ex; | |
2190 | char *cmdrest; | |
2191 | char *format_start, *format_end; | |
2192 | struct format_piece *fpieces; | |
2193 | int nargs; | |
2194 | struct gdbarch *gdbarch = get_current_arch (); | |
2195 | ||
2196 | if (!cmd) | |
2197 | return NULL; | |
2198 | ||
2199 | cmdrest = cmd; | |
2200 | ||
2201 | if (*cmdrest == ',') | |
2202 | ++cmdrest; | |
2203 | cmdrest = skip_spaces (cmdrest); | |
2204 | ||
2205 | if (*cmdrest++ != '"') | |
2206 | error (_("No format string following the location")); | |
2207 | ||
2208 | format_start = cmdrest; | |
2209 | ||
2210 | fpieces = parse_format_string (&cmdrest); | |
2211 | ||
2212 | old_cleanups = make_cleanup (free_format_pieces_cleanup, &fpieces); | |
2213 | ||
2214 | format_end = cmdrest; | |
2215 | ||
2216 | if (*cmdrest++ != '"') | |
2217 | error (_("Bad format string, non-terminated '\"'.")); | |
2218 | ||
2219 | cmdrest = skip_spaces (cmdrest); | |
2220 | ||
2221 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2222 | error (_("Invalid argument syntax")); | |
2223 | ||
2224 | if (*cmdrest == ',') | |
2225 | cmdrest++; | |
2226 | cmdrest = skip_spaces (cmdrest); | |
2227 | ||
2228 | /* For each argument, make an expression. */ | |
2229 | ||
2230 | argvec = (struct expression **) alloca (strlen (cmd) | |
2231 | * sizeof (struct expression *)); | |
2232 | ||
2233 | nargs = 0; | |
2234 | while (*cmdrest != '\0') | |
2235 | { | |
2236 | char *cmd1; | |
2237 | ||
2238 | cmd1 = cmdrest; | |
2239 | expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); | |
2240 | argvec[nargs++] = expr; | |
2241 | cmdrest = cmd1; | |
2242 | if (*cmdrest == ',') | |
2243 | ++cmdrest; | |
2244 | } | |
2245 | ||
2246 | /* We don't want to stop processing, so catch any errors | |
2247 | that may show up. */ | |
2248 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
2249 | { | |
2250 | aexpr = gen_printf (scope, gdbarch, 0, 0, | |
2251 | format_start, format_end - format_start, | |
2252 | fpieces, nargs, argvec); | |
2253 | } | |
2254 | ||
2255 | if (ex.reason < 0) | |
2256 | { | |
2257 | /* If we got here, it means the command could not be parsed to a valid | |
2258 | bytecode expression and thus can't be evaluated on the target's side. | |
2259 | It's no use iterating through the other commands. */ | |
2260 | return NULL; | |
2261 | } | |
2262 | ||
2263 | do_cleanups (old_cleanups); | |
2264 | ||
2265 | /* We have a valid agent expression, return it. */ | |
2266 | return aexpr; | |
2267 | } | |
2268 | ||
2269 | /* Based on location BL, create a list of breakpoint commands to be | |
2270 | passed on to the target. If we have duplicated locations with | |
2271 | different commands, we will add any such to the list. */ | |
2272 | ||
2273 | static void | |
2274 | build_target_command_list (struct bp_location *bl) | |
2275 | { | |
2276 | struct bp_location **locp = NULL, **loc2p; | |
2277 | int null_command_or_parse_error = 0; | |
2278 | int modified = bl->needs_update; | |
2279 | struct bp_location *loc; | |
2280 | ||
2281 | /* For now, limit to agent-style dprintf breakpoints. */ | |
2282 | if (bl->owner->type != bp_dprintf | |
2283 | || strcmp (dprintf_style, dprintf_style_agent) != 0) | |
2284 | return; | |
2285 | ||
2286 | if (!target_can_run_breakpoint_commands ()) | |
2287 | return; | |
2288 | ||
2289 | /* Do a first pass to check for locations with no assigned | |
2290 | conditions or conditions that fail to parse to a valid agent expression | |
2291 | bytecode. If any of these happen, then it's no use to send conditions | |
2292 | to the target since this location will always trigger and generate a | |
2293 | response back to GDB. */ | |
2294 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2295 | { | |
2296 | loc = (*loc2p); | |
2297 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2298 | { | |
2299 | if (modified) | |
2300 | { | |
2301 | struct agent_expr *aexpr; | |
2302 | ||
2303 | /* Re-parse the commands since something changed. In that | |
2304 | case we already freed the command bytecodes (see | |
2305 | force_breakpoint_reinsertion). We just | |
2306 | need to parse the command to bytecodes again. */ | |
2307 | aexpr = parse_cmd_to_aexpr (bl->address, | |
2308 | loc->owner->extra_string); | |
2309 | loc->cmd_bytecode = aexpr; | |
2310 | ||
2311 | if (!aexpr) | |
2312 | continue; | |
2313 | } | |
2314 | ||
2315 | /* If we have a NULL bytecode expression, it means something | |
2316 | went wrong or we have a null command expression. */ | |
2317 | if (!loc->cmd_bytecode) | |
2318 | { | |
2319 | null_command_or_parse_error = 1; | |
2320 | break; | |
2321 | } | |
2322 | } | |
2323 | } | |
2324 | ||
2325 | /* If anything failed, then we're not doing target-side commands, | |
2326 | and so clean up. */ | |
2327 | if (null_command_or_parse_error) | |
2328 | { | |
2329 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2330 | { | |
2331 | loc = (*loc2p); | |
2332 | if (is_breakpoint (loc->owner) | |
2333 | && loc->pspace->num == bl->pspace->num) | |
2334 | { | |
2335 | /* Only go as far as the first NULL bytecode is | |
2336 | located. */ | |
2337 | if (!loc->cond_bytecode) | |
2338 | return; | |
2339 | ||
2340 | free_agent_expr (loc->cond_bytecode); | |
2341 | loc->cond_bytecode = NULL; | |
2342 | } | |
2343 | } | |
2344 | } | |
2345 | ||
2346 | /* No NULL commands or failed bytecode generation. Build a command list | |
2347 | for this location's address. */ | |
2348 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2349 | { | |
2350 | loc = (*loc2p); | |
2351 | if (loc->owner->extra_string | |
2352 | && is_breakpoint (loc->owner) | |
2353 | && loc->pspace->num == bl->pspace->num | |
2354 | && loc->owner->enable_state == bp_enabled | |
2355 | && loc->enabled) | |
2356 | /* Add the command to the vector. This will be used later | |
2357 | to send the commands to the target. */ | |
2358 | VEC_safe_push (agent_expr_p, bl->target_info.tcommands, | |
2359 | loc->cmd_bytecode); | |
2360 | } | |
2361 | ||
2362 | bl->target_info.persist = 0; | |
2363 | /* Maybe flag this location as persistent. */ | |
2364 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2365 | bl->target_info.persist = 1; | |
2366 | } | |
2367 | ||
35df4500 TJB |
2368 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2369 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2370 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2371 | Returns 0 for success, 1 if the bp_location type is not supported or |
2372 | -1 for failure. | |
879bfdc2 | 2373 | |
4a64f543 MS |
2374 | NOTE drow/2003-09-09: This routine could be broken down to an |
2375 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2376 | static int |
35df4500 | 2377 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2378 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2379 | int *disabled_breaks, |
dd61ec5c MW |
2380 | int *hw_breakpoint_error, |
2381 | int *hw_bp_error_explained_already) | |
879bfdc2 DJ |
2382 | { |
2383 | int val = 0; | |
dd61ec5c MW |
2384 | char *hw_bp_err_string = NULL; |
2385 | struct gdb_exception e; | |
879bfdc2 | 2386 | |
b775012e | 2387 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2388 | return 0; |
2389 | ||
35c63cd8 JB |
2390 | /* Note we don't initialize bl->target_info, as that wipes out |
2391 | the breakpoint location's shadow_contents if the breakpoint | |
2392 | is still inserted at that location. This in turn breaks | |
2393 | target_read_memory which depends on these buffers when | |
2394 | a memory read is requested at the breakpoint location: | |
2395 | Once the target_info has been wiped, we fail to see that | |
2396 | we have a breakpoint inserted at that address and thus | |
2397 | read the breakpoint instead of returning the data saved in | |
2398 | the breakpoint location's shadow contents. */ | |
35df4500 TJB |
2399 | bl->target_info.placed_address = bl->address; |
2400 | bl->target_info.placed_address_space = bl->pspace->aspace; | |
f1310107 | 2401 | bl->target_info.length = bl->length; |
8181d85f | 2402 | |
b775012e LM |
2403 | /* When working with target-side conditions, we must pass all the conditions |
2404 | for the same breakpoint address down to the target since GDB will not | |
2405 | insert those locations. With a list of breakpoint conditions, the target | |
2406 | can decide when to stop and notify GDB. */ | |
2407 | ||
2408 | if (is_breakpoint (bl->owner)) | |
2409 | { | |
2410 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2411 | build_target_command_list (bl); |
2412 | /* Reset the modification marker. */ | |
b775012e LM |
2413 | bl->needs_update = 0; |
2414 | } | |
2415 | ||
35df4500 TJB |
2416 | if (bl->loc_type == bp_loc_software_breakpoint |
2417 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 2418 | { |
35df4500 | 2419 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
2420 | { |
2421 | /* If the explicitly specified breakpoint type | |
2422 | is not hardware breakpoint, check the memory map to see | |
2423 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 2424 | |
765dc015 VP |
2425 | Two important cases are: |
2426 | - location type is not hardware breakpoint, memory | |
2427 | is readonly. We change the type of the location to | |
2428 | hardware breakpoint. | |
4a64f543 MS |
2429 | - location type is hardware breakpoint, memory is |
2430 | read-write. This means we've previously made the | |
2431 | location hardware one, but then the memory map changed, | |
2432 | so we undo. | |
765dc015 | 2433 | |
4a64f543 MS |
2434 | When breakpoints are removed, remove_breakpoints will use |
2435 | location types we've just set here, the only possible | |
2436 | problem is that memory map has changed during running | |
2437 | program, but it's not going to work anyway with current | |
2438 | gdb. */ | |
765dc015 | 2439 | struct mem_region *mr |
35df4500 | 2440 | = lookup_mem_region (bl->target_info.placed_address); |
765dc015 VP |
2441 | |
2442 | if (mr) | |
2443 | { | |
2444 | if (automatic_hardware_breakpoints) | |
2445 | { | |
765dc015 VP |
2446 | enum bp_loc_type new_type; |
2447 | ||
2448 | if (mr->attrib.mode != MEM_RW) | |
2449 | new_type = bp_loc_hardware_breakpoint; | |
2450 | else | |
2451 | new_type = bp_loc_software_breakpoint; | |
2452 | ||
35df4500 | 2453 | if (new_type != bl->loc_type) |
765dc015 VP |
2454 | { |
2455 | static int said = 0; | |
cc59ec59 | 2456 | |
35df4500 | 2457 | bl->loc_type = new_type; |
765dc015 VP |
2458 | if (!said) |
2459 | { | |
3e43a32a MS |
2460 | fprintf_filtered (gdb_stdout, |
2461 | _("Note: automatically using " | |
2462 | "hardware breakpoints for " | |
2463 | "read-only addresses.\n")); | |
765dc015 VP |
2464 | said = 1; |
2465 | } | |
2466 | } | |
2467 | } | |
35df4500 | 2468 | else if (bl->loc_type == bp_loc_software_breakpoint |
765dc015 | 2469 | && mr->attrib.mode != MEM_RW) |
3e43a32a MS |
2470 | warning (_("cannot set software breakpoint " |
2471 | "at readonly address %s"), | |
35df4500 | 2472 | paddress (bl->gdbarch, bl->address)); |
765dc015 VP |
2473 | } |
2474 | } | |
2475 | ||
879bfdc2 DJ |
2476 | /* First check to see if we have to handle an overlay. */ |
2477 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2478 | || bl->section == NULL |
2479 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2480 | { |
2481 | /* No overlay handling: just set the breakpoint. */ | |
dd61ec5c MW |
2482 | TRY_CATCH (e, RETURN_MASK_ALL) |
2483 | { | |
2484 | val = bl->owner->ops->insert_location (bl); | |
2485 | } | |
2486 | if (e.reason < 0) | |
2487 | { | |
2488 | val = 1; | |
2489 | hw_bp_err_string = (char *) e.message; | |
2490 | } | |
879bfdc2 DJ |
2491 | } |
2492 | else | |
2493 | { | |
4a64f543 | 2494 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2495 | Shall we set a breakpoint at the LMA? */ |
2496 | if (!overlay_events_enabled) | |
2497 | { | |
2498 | /* Yes -- overlay event support is not active, | |
2499 | so we must try to set a breakpoint at the LMA. | |
2500 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2501 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2502 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2503 | bl->owner->number); |
879bfdc2 DJ |
2504 | else |
2505 | { | |
35df4500 TJB |
2506 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2507 | bl->section); | |
879bfdc2 | 2508 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 TJB |
2509 | bl->overlay_target_info = bl->target_info; |
2510 | bl->overlay_target_info.placed_address = addr; | |
2511 | val = target_insert_breakpoint (bl->gdbarch, | |
2512 | &bl->overlay_target_info); | |
879bfdc2 | 2513 | if (val != 0) |
99361f52 | 2514 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
2515 | "Overlay breakpoint %d " |
2516 | "failed: in ROM?\n", | |
35df4500 | 2517 | bl->owner->number); |
879bfdc2 DJ |
2518 | } |
2519 | } | |
2520 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2521 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2522 | { |
2523 | /* Yes. This overlay section is mapped into memory. */ | |
dd61ec5c MW |
2524 | TRY_CATCH (e, RETURN_MASK_ALL) |
2525 | { | |
2526 | val = bl->owner->ops->insert_location (bl); | |
2527 | } | |
2528 | if (e.reason < 0) | |
2529 | { | |
2530 | val = 1; | |
2531 | hw_bp_err_string = (char *) e.message; | |
2532 | } | |
879bfdc2 DJ |
2533 | } |
2534 | else | |
2535 | { | |
2536 | /* No. This breakpoint will not be inserted. | |
2537 | No error, but do not mark the bp as 'inserted'. */ | |
2538 | return 0; | |
2539 | } | |
2540 | } | |
2541 | ||
2542 | if (val) | |
2543 | { | |
2544 | /* Can't set the breakpoint. */ | |
35df4500 | 2545 | if (solib_name_from_address (bl->pspace, bl->address)) |
879bfdc2 | 2546 | { |
4a64f543 | 2547 | /* See also: disable_breakpoints_in_shlibs. */ |
879bfdc2 | 2548 | val = 0; |
35df4500 | 2549 | bl->shlib_disabled = 1; |
8d3788bd | 2550 | observer_notify_breakpoint_modified (bl->owner); |
3fbb6ffa TJB |
2551 | if (!*disabled_breaks) |
2552 | { | |
2553 | fprintf_unfiltered (tmp_error_stream, | |
2554 | "Cannot insert breakpoint %d.\n", | |
2555 | bl->owner->number); | |
2556 | fprintf_unfiltered (tmp_error_stream, | |
2557 | "Temporarily disabling shared " | |
2558 | "library breakpoints:\n"); | |
2559 | } | |
2560 | *disabled_breaks = 1; | |
879bfdc2 | 2561 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 2562 | "breakpoint #%d\n", bl->owner->number); |
879bfdc2 DJ |
2563 | } |
2564 | else | |
879bfdc2 | 2565 | { |
35df4500 | 2566 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2567 | { |
dd61ec5c MW |
2568 | *hw_breakpoint_error = 1; |
2569 | *hw_bp_error_explained_already = hw_bp_err_string != NULL; | |
2570 | fprintf_unfiltered (tmp_error_stream, | |
2571 | "Cannot insert hardware breakpoint %d%s", | |
2572 | bl->owner->number, hw_bp_err_string ? ":" : ".\n"); | |
2573 | if (hw_bp_err_string) | |
2574 | fprintf_unfiltered (tmp_error_stream, "%s.\n", hw_bp_err_string); | |
879bfdc2 DJ |
2575 | } |
2576 | else | |
2577 | { | |
2578 | fprintf_unfiltered (tmp_error_stream, | |
2579 | "Cannot insert breakpoint %d.\n", | |
35df4500 | 2580 | bl->owner->number); |
879bfdc2 DJ |
2581 | fprintf_filtered (tmp_error_stream, |
2582 | "Error accessing memory address "); | |
35df4500 | 2583 | fputs_filtered (paddress (bl->gdbarch, bl->address), |
5af949e3 | 2584 | tmp_error_stream); |
879bfdc2 DJ |
2585 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
2586 | safe_strerror (val)); | |
2587 | } | |
2588 | ||
2589 | } | |
2590 | } | |
2591 | else | |
35df4500 | 2592 | bl->inserted = 1; |
879bfdc2 DJ |
2593 | |
2594 | return val; | |
2595 | } | |
2596 | ||
35df4500 | 2597 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2598 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2599 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2600 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2601 | { |
77b06cd7 TJB |
2602 | gdb_assert (bl->owner->ops != NULL |
2603 | && bl->owner->ops->insert_location != NULL); | |
2604 | ||
2605 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2606 | |
2607 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2608 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2609 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
2610 | { |
2611 | struct bp_location *loc, **loc_temp; | |
2612 | ||
2613 | /* But don't try to insert it, if there's already another | |
2614 | hw_access location that would be considered a duplicate | |
2615 | of this one. */ | |
2616 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 2617 | if (loc != bl |
85d721b8 | 2618 | && loc->watchpoint_type == hw_access |
35df4500 | 2619 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2620 | { |
35df4500 TJB |
2621 | bl->duplicate = 1; |
2622 | bl->inserted = 1; | |
2623 | bl->target_info = loc->target_info; | |
2624 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2625 | val = 0; |
2626 | break; | |
2627 | } | |
2628 | ||
2629 | if (val == 1) | |
2630 | { | |
77b06cd7 TJB |
2631 | bl->watchpoint_type = hw_access; |
2632 | val = bl->owner->ops->insert_location (bl); | |
2633 | ||
2634 | if (val) | |
2635 | /* Back to the original value. */ | |
2636 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2637 | } |
2638 | } | |
2639 | ||
35df4500 | 2640 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2641 | } |
2642 | ||
35df4500 | 2643 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2644 | { |
77b06cd7 TJB |
2645 | gdb_assert (bl->owner->ops != NULL |
2646 | && bl->owner->ops->insert_location != NULL); | |
2647 | ||
2648 | val = bl->owner->ops->insert_location (bl); | |
2649 | if (val) | |
2650 | { | |
2651 | bl->owner->enable_state = bp_disabled; | |
2652 | ||
2653 | if (val == 1) | |
2654 | warning (_("\ | |
2655 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2656 | of catchpoint."), bl->owner->number); | |
2657 | else | |
2658 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2659 | } | |
2660 | ||
2661 | bl->inserted = (val == 0); | |
1640b821 DJ |
2662 | |
2663 | /* We've already printed an error message if there was a problem | |
2664 | inserting this catchpoint, and we've disabled the catchpoint, | |
2665 | so just return success. */ | |
2666 | return 0; | |
879bfdc2 DJ |
2667 | } |
2668 | ||
2669 | return 0; | |
2670 | } | |
2671 | ||
6c95b8df PA |
2672 | /* This function is called when program space PSPACE is about to be |
2673 | deleted. It takes care of updating breakpoints to not reference | |
2674 | PSPACE anymore. */ | |
2675 | ||
2676 | void | |
2677 | breakpoint_program_space_exit (struct program_space *pspace) | |
2678 | { | |
2679 | struct breakpoint *b, *b_temp; | |
876fa593 | 2680 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
2681 | |
2682 | /* Remove any breakpoint that was set through this program space. */ | |
2683 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
2684 | { | |
2685 | if (b->pspace == pspace) | |
2686 | delete_breakpoint (b); | |
2687 | } | |
2688 | ||
2689 | /* Breakpoints set through other program spaces could have locations | |
2690 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 2691 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
2692 | { |
2693 | struct bp_location *tmp; | |
2694 | ||
2695 | if (loc->pspace == pspace) | |
2696 | { | |
2bdf28a0 | 2697 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2698 | if (loc->owner->loc == loc) |
2699 | loc->owner->loc = loc->next; | |
2700 | else | |
2701 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2702 | if (tmp->next == loc) | |
2703 | { | |
2704 | tmp->next = loc->next; | |
2705 | break; | |
2706 | } | |
2707 | } | |
2708 | } | |
2709 | ||
2710 | /* Now update the global location list to permanently delete the | |
2711 | removed locations above. */ | |
2712 | update_global_location_list (0); | |
2713 | } | |
2714 | ||
74960c60 VP |
2715 | /* Make sure all breakpoints are inserted in inferior. |
2716 | Throws exception on any error. | |
2717 | A breakpoint that is already inserted won't be inserted | |
2718 | again, so calling this function twice is safe. */ | |
2719 | void | |
2720 | insert_breakpoints (void) | |
2721 | { | |
2722 | struct breakpoint *bpt; | |
2723 | ||
2724 | ALL_BREAKPOINTS (bpt) | |
2725 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
2726 | { |
2727 | struct watchpoint *w = (struct watchpoint *) bpt; | |
2728 | ||
2729 | update_watchpoint (w, 0 /* don't reparse. */); | |
2730 | } | |
74960c60 | 2731 | |
b60e7edf | 2732 | update_global_location_list (1); |
74960c60 | 2733 | |
c35b1492 PA |
2734 | /* update_global_location_list does not insert breakpoints when |
2735 | always_inserted_mode is not enabled. Explicitly insert them | |
2736 | now. */ | |
2737 | if (!breakpoints_always_inserted_mode ()) | |
74960c60 VP |
2738 | insert_breakpoint_locations (); |
2739 | } | |
2740 | ||
20388dd6 YQ |
2741 | /* Invoke CALLBACK for each of bp_location. */ |
2742 | ||
2743 | void | |
2744 | iterate_over_bp_locations (walk_bp_location_callback callback) | |
2745 | { | |
2746 | struct bp_location *loc, **loc_tmp; | |
2747 | ||
2748 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
2749 | { | |
2750 | callback (loc, NULL); | |
2751 | } | |
2752 | } | |
2753 | ||
b775012e LM |
2754 | /* This is used when we need to synch breakpoint conditions between GDB and the |
2755 | target. It is the case with deleting and disabling of breakpoints when using | |
2756 | always-inserted mode. */ | |
2757 | ||
2758 | static void | |
2759 | update_inserted_breakpoint_locations (void) | |
2760 | { | |
2761 | struct bp_location *bl, **blp_tmp; | |
2762 | int error_flag = 0; | |
2763 | int val = 0; | |
2764 | int disabled_breaks = 0; | |
2765 | int hw_breakpoint_error = 0; | |
dd61ec5c | 2766 | int hw_bp_details_reported = 0; |
b775012e LM |
2767 | |
2768 | struct ui_file *tmp_error_stream = mem_fileopen (); | |
2769 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); | |
2770 | ||
2771 | /* Explicitly mark the warning -- this will only be printed if | |
2772 | there was an error. */ | |
2773 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
2774 | ||
2775 | save_current_space_and_thread (); | |
2776 | ||
2777 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
2778 | { | |
2779 | /* We only want to update software breakpoints and hardware | |
2780 | breakpoints. */ | |
2781 | if (!is_breakpoint (bl->owner)) | |
2782 | continue; | |
2783 | ||
2784 | /* We only want to update locations that are already inserted | |
2785 | and need updating. This is to avoid unwanted insertion during | |
2786 | deletion of breakpoints. */ | |
2787 | if (!bl->inserted || (bl->inserted && !bl->needs_update)) | |
2788 | continue; | |
2789 | ||
2790 | switch_to_program_space_and_thread (bl->pspace); | |
2791 | ||
2792 | /* For targets that support global breakpoints, there's no need | |
2793 | to select an inferior to insert breakpoint to. In fact, even | |
2794 | if we aren't attached to any process yet, we should still | |
2795 | insert breakpoints. */ | |
f5656ead | 2796 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
b775012e LM |
2797 | && ptid_equal (inferior_ptid, null_ptid)) |
2798 | continue; | |
2799 | ||
2800 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, | |
dd61ec5c | 2801 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
2802 | if (val) |
2803 | error_flag = val; | |
2804 | } | |
2805 | ||
2806 | if (error_flag) | |
2807 | { | |
2808 | target_terminal_ours_for_output (); | |
2809 | error_stream (tmp_error_stream); | |
2810 | } | |
2811 | ||
2812 | do_cleanups (cleanups); | |
2813 | } | |
2814 | ||
c30eee59 | 2815 | /* Used when starting or continuing the program. */ |
c906108c | 2816 | |
74960c60 VP |
2817 | static void |
2818 | insert_breakpoint_locations (void) | |
c906108c | 2819 | { |
a5606eee | 2820 | struct breakpoint *bpt; |
35df4500 | 2821 | struct bp_location *bl, **blp_tmp; |
eacd795a | 2822 | int error_flag = 0; |
c906108c | 2823 | int val = 0; |
3fbb6ffa | 2824 | int disabled_breaks = 0; |
81d0cc19 | 2825 | int hw_breakpoint_error = 0; |
dd61ec5c | 2826 | int hw_bp_error_explained_already = 0; |
c906108c | 2827 | |
81d0cc19 | 2828 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 2829 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 2830 | |
81d0cc19 GS |
2831 | /* Explicitly mark the warning -- this will only be printed if |
2832 | there was an error. */ | |
2833 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
6c95b8df PA |
2834 | |
2835 | save_current_space_and_thread (); | |
2836 | ||
35df4500 | 2837 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 2838 | { |
b775012e | 2839 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2840 | continue; |
2841 | ||
4a64f543 MS |
2842 | /* There is no point inserting thread-specific breakpoints if |
2843 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
2844 | has BL->OWNER always non-NULL. */ | |
35df4500 TJB |
2845 | if (bl->owner->thread != -1 |
2846 | && !valid_thread_id (bl->owner->thread)) | |
f365de73 AS |
2847 | continue; |
2848 | ||
35df4500 | 2849 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
2850 | |
2851 | /* For targets that support global breakpoints, there's no need | |
2852 | to select an inferior to insert breakpoint to. In fact, even | |
2853 | if we aren't attached to any process yet, we should still | |
2854 | insert breakpoints. */ | |
f5656ead | 2855 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
2856 | && ptid_equal (inferior_ptid, null_ptid)) |
2857 | continue; | |
2858 | ||
3fbb6ffa | 2859 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2860 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 2861 | if (val) |
eacd795a | 2862 | error_flag = val; |
879bfdc2 | 2863 | } |
c906108c | 2864 | |
4a64f543 MS |
2865 | /* If we failed to insert all locations of a watchpoint, remove |
2866 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
2867 | ALL_BREAKPOINTS (bpt) |
2868 | { | |
2869 | int some_failed = 0; | |
2870 | struct bp_location *loc; | |
2871 | ||
2872 | if (!is_hardware_watchpoint (bpt)) | |
2873 | continue; | |
2874 | ||
d6b74ac4 | 2875 | if (!breakpoint_enabled (bpt)) |
a5606eee | 2876 | continue; |
74960c60 VP |
2877 | |
2878 | if (bpt->disposition == disp_del_at_next_stop) | |
2879 | continue; | |
a5606eee VP |
2880 | |
2881 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 2882 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
2883 | { |
2884 | some_failed = 1; | |
2885 | break; | |
2886 | } | |
2887 | if (some_failed) | |
2888 | { | |
2889 | for (loc = bpt->loc; loc; loc = loc->next) | |
2890 | if (loc->inserted) | |
2891 | remove_breakpoint (loc, mark_uninserted); | |
2892 | ||
2893 | hw_breakpoint_error = 1; | |
2894 | fprintf_unfiltered (tmp_error_stream, | |
2895 | "Could not insert hardware watchpoint %d.\n", | |
2896 | bpt->number); | |
eacd795a | 2897 | error_flag = -1; |
a5606eee VP |
2898 | } |
2899 | } | |
2900 | ||
eacd795a | 2901 | if (error_flag) |
81d0cc19 GS |
2902 | { |
2903 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
2904 | message about possibly exhausted resources. */ | |
dd61ec5c | 2905 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 2906 | { |
c6510018 MS |
2907 | fprintf_unfiltered (tmp_error_stream, |
2908 | "Could not insert hardware breakpoints:\n\ | |
2909 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 2910 | } |
81d0cc19 GS |
2911 | target_terminal_ours_for_output (); |
2912 | error_stream (tmp_error_stream); | |
2913 | } | |
f7545552 TT |
2914 | |
2915 | do_cleanups (cleanups); | |
c906108c SS |
2916 | } |
2917 | ||
c30eee59 TJB |
2918 | /* Used when the program stops. |
2919 | Returns zero if successful, or non-zero if there was a problem | |
2920 | removing a breakpoint location. */ | |
2921 | ||
c906108c | 2922 | int |
fba45db2 | 2923 | remove_breakpoints (void) |
c906108c | 2924 | { |
35df4500 | 2925 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 2926 | int val = 0; |
c906108c | 2927 | |
35df4500 | 2928 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2929 | { |
1e4d1764 | 2930 | if (bl->inserted && !is_tracepoint (bl->owner)) |
35df4500 | 2931 | val |= remove_breakpoint (bl, mark_uninserted); |
c5aa993b | 2932 | } |
3a1bae8e | 2933 | return val; |
c906108c SS |
2934 | } |
2935 | ||
6c95b8df PA |
2936 | /* Remove breakpoints of process PID. */ |
2937 | ||
2938 | int | |
2939 | remove_breakpoints_pid (int pid) | |
2940 | { | |
35df4500 | 2941 | struct bp_location *bl, **blp_tmp; |
6c95b8df PA |
2942 | int val; |
2943 | struct inferior *inf = find_inferior_pid (pid); | |
2944 | ||
35df4500 | 2945 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 2946 | { |
35df4500 | 2947 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2948 | continue; |
2949 | ||
d3ce09f5 SS |
2950 | if (bl->owner->type == bp_dprintf) |
2951 | continue; | |
2952 | ||
35df4500 | 2953 | if (bl->inserted) |
6c95b8df | 2954 | { |
35df4500 | 2955 | val = remove_breakpoint (bl, mark_uninserted); |
6c95b8df PA |
2956 | if (val != 0) |
2957 | return val; | |
2958 | } | |
2959 | } | |
2960 | return 0; | |
2961 | } | |
2962 | ||
c906108c | 2963 | int |
fba45db2 | 2964 | reattach_breakpoints (int pid) |
c906108c | 2965 | { |
6c95b8df | 2966 | struct cleanup *old_chain; |
35df4500 | 2967 | struct bp_location *bl, **blp_tmp; |
c906108c | 2968 | int val; |
86b887df | 2969 | struct ui_file *tmp_error_stream; |
dd61ec5c | 2970 | int dummy1 = 0, dummy2 = 0, dummy3 = 0; |
6c95b8df PA |
2971 | struct inferior *inf; |
2972 | struct thread_info *tp; | |
2973 | ||
2974 | tp = any_live_thread_of_process (pid); | |
2975 | if (tp == NULL) | |
2976 | return 1; | |
2977 | ||
2978 | inf = find_inferior_pid (pid); | |
2979 | old_chain = save_inferior_ptid (); | |
2980 | ||
2981 | inferior_ptid = tp->ptid; | |
a4954f26 | 2982 | |
86b887df | 2983 | tmp_error_stream = mem_fileopen (); |
a4954f26 | 2984 | make_cleanup_ui_file_delete (tmp_error_stream); |
c906108c | 2985 | |
35df4500 | 2986 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2987 | { |
35df4500 | 2988 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2989 | continue; |
2990 | ||
35df4500 | 2991 | if (bl->inserted) |
c5aa993b | 2992 | { |
35df4500 | 2993 | bl->inserted = 0; |
dd61ec5c | 2994 | val = insert_bp_location (bl, tmp_error_stream, &dummy1, &dummy2, &dummy3); |
c5aa993b JM |
2995 | if (val != 0) |
2996 | { | |
ce696e05 | 2997 | do_cleanups (old_chain); |
c5aa993b JM |
2998 | return val; |
2999 | } | |
3000 | } | |
3001 | } | |
ce696e05 | 3002 | do_cleanups (old_chain); |
c906108c SS |
3003 | return 0; |
3004 | } | |
3005 | ||
e58b0e63 PA |
3006 | static int internal_breakpoint_number = -1; |
3007 | ||
84f4c1fe PM |
3008 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3009 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3010 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3011 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3012 | breakpoint_count and that value incremented. Internal breakpoints |
3013 | do not set the internal var bpnum. */ | |
3014 | static void | |
3015 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3016 | { | |
3017 | if (internal) | |
3018 | b->number = internal_breakpoint_number--; | |
3019 | else | |
3020 | { | |
3021 | set_breakpoint_count (breakpoint_count + 1); | |
3022 | b->number = breakpoint_count; | |
3023 | } | |
3024 | } | |
3025 | ||
e62c965a | 3026 | static struct breakpoint * |
a6d9a66e | 3027 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 3028 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 3029 | const struct breakpoint_ops *ops) |
e62c965a | 3030 | { |
e62c965a PP |
3031 | struct symtab_and_line sal; |
3032 | struct breakpoint *b; | |
3033 | ||
4a64f543 | 3034 | init_sal (&sal); /* Initialize to zeroes. */ |
e62c965a PP |
3035 | |
3036 | sal.pc = address; | |
3037 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 3038 | sal.pspace = current_program_space; |
e62c965a | 3039 | |
06edf0c0 | 3040 | b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
3041 | b->number = internal_breakpoint_number--; |
3042 | b->disposition = disp_donttouch; | |
3043 | ||
3044 | return b; | |
3045 | } | |
3046 | ||
17450429 PP |
3047 | static const char *const longjmp_names[] = |
3048 | { | |
3049 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3050 | }; | |
3051 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3052 | ||
3053 | /* Per-objfile data private to breakpoint.c. */ | |
3054 | struct breakpoint_objfile_data | |
3055 | { | |
3056 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
3057 | struct minimal_symbol *overlay_msym; | |
3058 | ||
3059 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
3060 | struct minimal_symbol *longjmp_msym[NUM_LONGJMP_NAMES]; | |
3061 | ||
28106bc2 SDJ |
3062 | /* True if we have looked for longjmp probes. */ |
3063 | int longjmp_searched; | |
3064 | ||
3065 | /* SystemTap probe points for longjmp (if any). */ | |
3066 | VEC (probe_p) *longjmp_probes; | |
3067 | ||
17450429 PP |
3068 | /* Minimal symbol for "std::terminate()" (if any). */ |
3069 | struct minimal_symbol *terminate_msym; | |
3070 | ||
3071 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
3072 | struct minimal_symbol *exception_msym; | |
28106bc2 SDJ |
3073 | |
3074 | /* True if we have looked for exception probes. */ | |
3075 | int exception_searched; | |
3076 | ||
3077 | /* SystemTap probe points for unwinding (if any). */ | |
3078 | VEC (probe_p) *exception_probes; | |
17450429 PP |
3079 | }; |
3080 | ||
3081 | static const struct objfile_data *breakpoint_objfile_key; | |
3082 | ||
3083 | /* Minimal symbol not found sentinel. */ | |
3084 | static struct minimal_symbol msym_not_found; | |
3085 | ||
3086 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3087 | ||
3088 | static int | |
3089 | msym_not_found_p (const struct minimal_symbol *msym) | |
3090 | { | |
3091 | return msym == &msym_not_found; | |
3092 | } | |
3093 | ||
3094 | /* Return per-objfile data needed by breakpoint.c. | |
3095 | Allocate the data if necessary. */ | |
3096 | ||
3097 | static struct breakpoint_objfile_data * | |
3098 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3099 | { | |
3100 | struct breakpoint_objfile_data *bp_objfile_data; | |
3101 | ||
3102 | bp_objfile_data = objfile_data (objfile, breakpoint_objfile_key); | |
3103 | if (bp_objfile_data == NULL) | |
3104 | { | |
3105 | bp_objfile_data = obstack_alloc (&objfile->objfile_obstack, | |
3106 | sizeof (*bp_objfile_data)); | |
3107 | ||
3108 | memset (bp_objfile_data, 0, sizeof (*bp_objfile_data)); | |
3109 | set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data); | |
3110 | } | |
3111 | return bp_objfile_data; | |
3112 | } | |
3113 | ||
28106bc2 SDJ |
3114 | static void |
3115 | free_breakpoint_probes (struct objfile *obj, void *data) | |
3116 | { | |
3117 | struct breakpoint_objfile_data *bp_objfile_data = data; | |
3118 | ||
3119 | VEC_free (probe_p, bp_objfile_data->longjmp_probes); | |
3120 | VEC_free (probe_p, bp_objfile_data->exception_probes); | |
3121 | } | |
3122 | ||
e62c965a | 3123 | static void |
af02033e | 3124 | create_overlay_event_breakpoint (void) |
e62c965a | 3125 | { |
69de3c6a | 3126 | struct objfile *objfile; |
af02033e | 3127 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3128 | |
69de3c6a PP |
3129 | ALL_OBJFILES (objfile) |
3130 | { | |
3131 | struct breakpoint *b; | |
17450429 PP |
3132 | struct breakpoint_objfile_data *bp_objfile_data; |
3133 | CORE_ADDR addr; | |
69de3c6a | 3134 | |
17450429 PP |
3135 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3136 | ||
3137 | if (msym_not_found_p (bp_objfile_data->overlay_msym)) | |
3138 | continue; | |
3139 | ||
3140 | if (bp_objfile_data->overlay_msym == NULL) | |
3141 | { | |
3142 | struct minimal_symbol *m; | |
3143 | ||
3144 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3145 | if (m == NULL) | |
3146 | { | |
3147 | /* Avoid future lookups in this objfile. */ | |
3148 | bp_objfile_data->overlay_msym = &msym_not_found; | |
3149 | continue; | |
3150 | } | |
3151 | bp_objfile_data->overlay_msym = m; | |
3152 | } | |
e62c965a | 3153 | |
17450429 PP |
3154 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
3155 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
06edf0c0 PA |
3156 | bp_overlay_event, |
3157 | &internal_breakpoint_ops); | |
69de3c6a | 3158 | b->addr_string = xstrdup (func_name); |
e62c965a | 3159 | |
69de3c6a PP |
3160 | if (overlay_debugging == ovly_auto) |
3161 | { | |
3162 | b->enable_state = bp_enabled; | |
3163 | overlay_events_enabled = 1; | |
3164 | } | |
3165 | else | |
3166 | { | |
3167 | b->enable_state = bp_disabled; | |
3168 | overlay_events_enabled = 0; | |
3169 | } | |
e62c965a PP |
3170 | } |
3171 | update_global_location_list (1); | |
3172 | } | |
3173 | ||
0fd8e87f | 3174 | static void |
af02033e | 3175 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 3176 | { |
6c95b8df | 3177 | struct program_space *pspace; |
6c95b8df PA |
3178 | struct cleanup *old_chain; |
3179 | ||
3180 | old_chain = save_current_program_space (); | |
0fd8e87f | 3181 | |
6c95b8df | 3182 | ALL_PSPACES (pspace) |
af02033e PP |
3183 | { |
3184 | struct objfile *objfile; | |
3185 | ||
3186 | set_current_program_space (pspace); | |
3187 | ||
3188 | ALL_OBJFILES (objfile) | |
0fd8e87f | 3189 | { |
af02033e PP |
3190 | int i; |
3191 | struct gdbarch *gdbarch; | |
17450429 | 3192 | struct breakpoint_objfile_data *bp_objfile_data; |
0fd8e87f | 3193 | |
af02033e PP |
3194 | gdbarch = get_objfile_arch (objfile); |
3195 | if (!gdbarch_get_longjmp_target_p (gdbarch)) | |
0fd8e87f UW |
3196 | continue; |
3197 | ||
17450429 PP |
3198 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3199 | ||
28106bc2 SDJ |
3200 | if (!bp_objfile_data->longjmp_searched) |
3201 | { | |
3202 | bp_objfile_data->longjmp_probes | |
3203 | = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
3204 | bp_objfile_data->longjmp_searched = 1; | |
3205 | } | |
3206 | ||
3207 | if (bp_objfile_data->longjmp_probes != NULL) | |
3208 | { | |
3209 | int i; | |
3210 | struct probe *probe; | |
3211 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3212 | ||
3213 | for (i = 0; | |
3214 | VEC_iterate (probe_p, | |
3215 | bp_objfile_data->longjmp_probes, | |
3216 | i, probe); | |
3217 | ++i) | |
3218 | { | |
3219 | struct breakpoint *b; | |
3220 | ||
3221 | b = create_internal_breakpoint (gdbarch, probe->address, | |
3222 | bp_longjmp_master, | |
3223 | &internal_breakpoint_ops); | |
3224 | b->addr_string = xstrdup ("-probe-stap libc:longjmp"); | |
3225 | b->enable_state = bp_disabled; | |
3226 | } | |
3227 | ||
3228 | continue; | |
3229 | } | |
3230 | ||
17450429 | 3231 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) |
af02033e PP |
3232 | { |
3233 | struct breakpoint *b; | |
af02033e | 3234 | const char *func_name; |
17450429 | 3235 | CORE_ADDR addr; |
6c95b8df | 3236 | |
17450429 | 3237 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i])) |
af02033e | 3238 | continue; |
0fd8e87f | 3239 | |
17450429 PP |
3240 | func_name = longjmp_names[i]; |
3241 | if (bp_objfile_data->longjmp_msym[i] == NULL) | |
3242 | { | |
3243 | struct minimal_symbol *m; | |
3244 | ||
3245 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3246 | if (m == NULL) | |
3247 | { | |
3248 | /* Prevent future lookups in this objfile. */ | |
3249 | bp_objfile_data->longjmp_msym[i] = &msym_not_found; | |
3250 | continue; | |
3251 | } | |
3252 | bp_objfile_data->longjmp_msym[i] = m; | |
3253 | } | |
3254 | ||
3255 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); | |
06edf0c0 PA |
3256 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, |
3257 | &internal_breakpoint_ops); | |
af02033e PP |
3258 | b->addr_string = xstrdup (func_name); |
3259 | b->enable_state = bp_disabled; | |
3260 | } | |
0fd8e87f | 3261 | } |
af02033e | 3262 | } |
0fd8e87f | 3263 | update_global_location_list (1); |
6c95b8df PA |
3264 | |
3265 | do_cleanups (old_chain); | |
0fd8e87f UW |
3266 | } |
3267 | ||
af02033e | 3268 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3269 | static void |
af02033e | 3270 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
3271 | { |
3272 | struct program_space *pspace; | |
aa7d318d | 3273 | struct cleanup *old_chain; |
af02033e | 3274 | const char *const func_name = "std::terminate()"; |
aa7d318d TT |
3275 | |
3276 | old_chain = save_current_program_space (); | |
3277 | ||
3278 | ALL_PSPACES (pspace) | |
17450429 PP |
3279 | { |
3280 | struct objfile *objfile; | |
3281 | CORE_ADDR addr; | |
3282 | ||
3283 | set_current_program_space (pspace); | |
3284 | ||
aa7d318d TT |
3285 | ALL_OBJFILES (objfile) |
3286 | { | |
3287 | struct breakpoint *b; | |
17450429 | 3288 | struct breakpoint_objfile_data *bp_objfile_data; |
aa7d318d | 3289 | |
17450429 | 3290 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3291 | |
17450429 PP |
3292 | if (msym_not_found_p (bp_objfile_data->terminate_msym)) |
3293 | continue; | |
3294 | ||
3295 | if (bp_objfile_data->terminate_msym == NULL) | |
3296 | { | |
3297 | struct minimal_symbol *m; | |
3298 | ||
3299 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
3300 | if (m == NULL || (MSYMBOL_TYPE (m) != mst_text | |
3301 | && MSYMBOL_TYPE (m) != mst_file_text)) | |
3302 | { | |
3303 | /* Prevent future lookups in this objfile. */ | |
3304 | bp_objfile_data->terminate_msym = &msym_not_found; | |
3305 | continue; | |
3306 | } | |
3307 | bp_objfile_data->terminate_msym = m; | |
3308 | } | |
aa7d318d | 3309 | |
17450429 PP |
3310 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
3311 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
06edf0c0 PA |
3312 | bp_std_terminate_master, |
3313 | &internal_breakpoint_ops); | |
aa7d318d TT |
3314 | b->addr_string = xstrdup (func_name); |
3315 | b->enable_state = bp_disabled; | |
3316 | } | |
17450429 PP |
3317 | } |
3318 | ||
aa7d318d TT |
3319 | update_global_location_list (1); |
3320 | ||
3321 | do_cleanups (old_chain); | |
3322 | } | |
3323 | ||
186c406b TT |
3324 | /* Install a master breakpoint on the unwinder's debug hook. */ |
3325 | ||
70221824 | 3326 | static void |
186c406b TT |
3327 | create_exception_master_breakpoint (void) |
3328 | { | |
3329 | struct objfile *objfile; | |
17450429 | 3330 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b TT |
3331 | |
3332 | ALL_OBJFILES (objfile) | |
3333 | { | |
17450429 PP |
3334 | struct breakpoint *b; |
3335 | struct gdbarch *gdbarch; | |
3336 | struct breakpoint_objfile_data *bp_objfile_data; | |
3337 | CORE_ADDR addr; | |
3338 | ||
3339 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
3340 | ||
28106bc2 SDJ |
3341 | /* We prefer the SystemTap probe point if it exists. */ |
3342 | if (!bp_objfile_data->exception_searched) | |
3343 | { | |
3344 | bp_objfile_data->exception_probes | |
3345 | = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
3346 | bp_objfile_data->exception_searched = 1; | |
3347 | } | |
3348 | ||
3349 | if (bp_objfile_data->exception_probes != NULL) | |
3350 | { | |
3351 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3352 | int i; | |
3353 | struct probe *probe; | |
3354 | ||
3355 | for (i = 0; | |
3356 | VEC_iterate (probe_p, | |
3357 | bp_objfile_data->exception_probes, | |
3358 | i, probe); | |
3359 | ++i) | |
3360 | { | |
3361 | struct breakpoint *b; | |
3362 | ||
3363 | b = create_internal_breakpoint (gdbarch, probe->address, | |
3364 | bp_exception_master, | |
3365 | &internal_breakpoint_ops); | |
3366 | b->addr_string = xstrdup ("-probe-stap libgcc:unwind"); | |
3367 | b->enable_state = bp_disabled; | |
3368 | } | |
3369 | ||
3370 | continue; | |
3371 | } | |
3372 | ||
3373 | /* Otherwise, try the hook function. */ | |
3374 | ||
17450429 PP |
3375 | if (msym_not_found_p (bp_objfile_data->exception_msym)) |
3376 | continue; | |
3377 | ||
3378 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 3379 | |
17450429 | 3380 | if (bp_objfile_data->exception_msym == NULL) |
186c406b | 3381 | { |
17450429 | 3382 | struct minimal_symbol *debug_hook; |
186c406b | 3383 | |
17450429 PP |
3384 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
3385 | if (debug_hook == NULL) | |
3386 | { | |
3387 | bp_objfile_data->exception_msym = &msym_not_found; | |
3388 | continue; | |
3389 | } | |
3390 | ||
3391 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 3392 | } |
17450429 PP |
3393 | |
3394 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); | |
3395 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, | |
3396 | ¤t_target); | |
06edf0c0 PA |
3397 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3398 | &internal_breakpoint_ops); | |
17450429 PP |
3399 | b->addr_string = xstrdup (func_name); |
3400 | b->enable_state = bp_disabled; | |
186c406b TT |
3401 | } |
3402 | ||
3403 | update_global_location_list (1); | |
3404 | } | |
3405 | ||
c906108c | 3406 | void |
fba45db2 | 3407 | update_breakpoints_after_exec (void) |
c906108c | 3408 | { |
35df4500 | 3409 | struct breakpoint *b, *b_tmp; |
876fa593 | 3410 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 3411 | |
25b22b0a PA |
3412 | /* We're about to delete breakpoints from GDB's lists. If the |
3413 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3414 | writing the breakpoints' "shadow contents" back into memory. The | |
3415 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3416 | do that. Instead, the target is responsible from marking | |
3417 | breakpoints out as soon as it detects an exec. We don't do that | |
3418 | here instead, because there may be other attempts to delete | |
3419 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 3420 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
3421 | if (bploc->pspace == current_program_space) |
3422 | gdb_assert (!bploc->inserted); | |
c906108c | 3423 | |
35df4500 | 3424 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3425 | { |
6c95b8df PA |
3426 | if (b->pspace != current_program_space) |
3427 | continue; | |
3428 | ||
4a64f543 | 3429 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3430 | if (b->type == bp_shlib_event) |
3431 | { | |
3432 | delete_breakpoint (b); | |
3433 | continue; | |
3434 | } | |
c906108c | 3435 | |
4a64f543 | 3436 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3437 | if (b->type == bp_jit_event) |
3438 | { | |
3439 | delete_breakpoint (b); | |
3440 | continue; | |
3441 | } | |
3442 | ||
1900040c | 3443 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3444 | as must overlay event and longjmp master breakpoints. */ |
3445 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3446 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3447 | || b->type == bp_exception_master) | |
c4093a6a JM |
3448 | { |
3449 | delete_breakpoint (b); | |
3450 | continue; | |
3451 | } | |
3452 | ||
4a64f543 | 3453 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3454 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3455 | { |
3456 | delete_breakpoint (b); | |
3457 | continue; | |
3458 | } | |
3459 | ||
611c83ae PA |
3460 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3461 | after an exec. */ | |
186c406b | 3462 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
e2e4d78b | 3463 | || b->type == bp_longjmp_call_dummy |
186c406b | 3464 | || b->type == bp_exception || b->type == bp_exception_resume) |
611c83ae PA |
3465 | { |
3466 | delete_breakpoint (b); | |
3467 | continue; | |
3468 | } | |
3469 | ||
ce78b96d JB |
3470 | if (b->type == bp_catchpoint) |
3471 | { | |
3472 | /* For now, none of the bp_catchpoint breakpoints need to | |
3473 | do anything at this point. In the future, if some of | |
3474 | the catchpoints need to something, we will need to add | |
3475 | a new method, and call this method from here. */ | |
3476 | continue; | |
3477 | } | |
3478 | ||
c5aa993b JM |
3479 | /* bp_finish is a special case. The only way we ought to be able |
3480 | to see one of these when an exec() has happened, is if the user | |
3481 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3482 | carries them to the call-site of the current callee, by setting | |
3483 | a temporary bp there and resuming. But in this case, the finish | |
3484 | will carry them entirely through the vfork & exec. | |
3485 | ||
3486 | We don't want to allow a bp_finish to remain inserted now. But | |
3487 | we can't safely delete it, 'cause finish_command has a handle to | |
3488 | the bp on a bpstat, and will later want to delete it. There's a | |
3489 | chance (and I've seen it happen) that if we delete the bp_finish | |
3490 | here, that its storage will get reused by the time finish_command | |
3491 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3492 | We really must allow finish_command to delete a bp_finish. | |
3493 | ||
e5dd4106 | 3494 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3495 | it's safe to delete something others may have handles to?" |
3496 | problem, what we'll do here is just uninsert the bp_finish, and | |
3497 | let finish_command delete it. | |
3498 | ||
3499 | (We know the bp_finish is "doomed" in the sense that it's | |
3500 | momentary, and will be deleted as soon as finish_command sees | |
3501 | the inferior stopped. So it doesn't matter that the bp's | |
3502 | address is probably bogus in the new a.out, unlike e.g., the | |
3503 | solib breakpoints.) */ | |
c5aa993b | 3504 | |
c5aa993b JM |
3505 | if (b->type == bp_finish) |
3506 | { | |
3507 | continue; | |
3508 | } | |
3509 | ||
3510 | /* Without a symbolic address, we have little hope of the | |
3511 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3512 | a.out. */ |
c5aa993b JM |
3513 | if (b->addr_string == NULL) |
3514 | { | |
3515 | delete_breakpoint (b); | |
3516 | continue; | |
3517 | } | |
c5aa993b | 3518 | } |
1900040c | 3519 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
af02033e PP |
3520 | create_overlay_event_breakpoint (); |
3521 | create_longjmp_master_breakpoint (); | |
3522 | create_std_terminate_master_breakpoint (); | |
186c406b | 3523 | create_exception_master_breakpoint (); |
c906108c SS |
3524 | } |
3525 | ||
3526 | int | |
d80ee84f | 3527 | detach_breakpoints (ptid_t ptid) |
c906108c | 3528 | { |
35df4500 | 3529 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3530 | int val = 0; |
ce696e05 | 3531 | struct cleanup *old_chain = save_inferior_ptid (); |
6c95b8df | 3532 | struct inferior *inf = current_inferior (); |
c5aa993b | 3533 | |
d80ee84f | 3534 | if (PIDGET (ptid) == PIDGET (inferior_ptid)) |
8a3fe4f8 | 3535 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3536 | |
6c95b8df | 3537 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3538 | inferior_ptid = ptid; |
35df4500 | 3539 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3540 | { |
35df4500 | 3541 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3542 | continue; |
3543 | ||
35df4500 TJB |
3544 | if (bl->inserted) |
3545 | val |= remove_breakpoint_1 (bl, mark_inserted); | |
c5aa993b | 3546 | } |
d03285ec UW |
3547 | |
3548 | /* Detach single-step breakpoints as well. */ | |
3549 | detach_single_step_breakpoints (); | |
3550 | ||
ce696e05 | 3551 | do_cleanups (old_chain); |
3a1bae8e | 3552 | return val; |
c906108c SS |
3553 | } |
3554 | ||
35df4500 | 3555 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3556 | Note that this is used to detach breakpoints from a child fork. |
3557 | When we get here, the child isn't in the inferior list, and neither | |
3558 | do we have objects to represent its address space --- we should | |
35df4500 | 3559 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3560 | |
c906108c | 3561 | static int |
35df4500 | 3562 | remove_breakpoint_1 (struct bp_location *bl, insertion_state_t is) |
c906108c SS |
3563 | { |
3564 | int val; | |
c5aa993b | 3565 | |
35df4500 TJB |
3566 | /* BL is never in moribund_locations by our callers. */ |
3567 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3568 | |
35df4500 | 3569 | if (bl->owner->enable_state == bp_permanent) |
c2c6d25f JM |
3570 | /* Permanent breakpoints cannot be inserted or removed. */ |
3571 | return 0; | |
3572 | ||
74960c60 VP |
3573 | /* The type of none suggests that owner is actually deleted. |
3574 | This should not ever happen. */ | |
35df4500 | 3575 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3576 | |
35df4500 TJB |
3577 | if (bl->loc_type == bp_loc_software_breakpoint |
3578 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3579 | { |
c02f5703 MS |
3580 | /* "Normal" instruction breakpoint: either the standard |
3581 | trap-instruction bp (bp_breakpoint), or a | |
3582 | bp_hardware_breakpoint. */ | |
3583 | ||
3584 | /* First check to see if we have to handle an overlay. */ | |
3585 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3586 | || bl->section == NULL |
3587 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3588 | { |
3589 | /* No overlay handling: just remove the breakpoint. */ | |
348d480f | 3590 | val = bl->owner->ops->remove_location (bl); |
c02f5703 | 3591 | } |
c906108c SS |
3592 | else |
3593 | { | |
4a64f543 | 3594 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3595 | Did we set a breakpoint at the LMA? */ |
3596 | if (!overlay_events_enabled) | |
3597 | { | |
3598 | /* Yes -- overlay event support is not active, so we | |
3599 | should have set a breakpoint at the LMA. Remove it. | |
3600 | */ | |
c02f5703 MS |
3601 | /* Ignore any failures: if the LMA is in ROM, we will |
3602 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3603 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3604 | target_remove_hw_breakpoint (bl->gdbarch, | |
3605 | &bl->overlay_target_info); | |
c02f5703 | 3606 | else |
35df4500 TJB |
3607 | target_remove_breakpoint (bl->gdbarch, |
3608 | &bl->overlay_target_info); | |
c02f5703 MS |
3609 | } |
3610 | /* Did we set a breakpoint at the VMA? | |
3611 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3612 | if (bl->inserted) |
c906108c | 3613 | { |
c02f5703 MS |
3614 | /* Yes -- remove it. Previously we did not bother to |
3615 | remove the breakpoint if the section had been | |
3616 | unmapped, but let's not rely on that being safe. We | |
3617 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3618 | |
3619 | /* However, we should remove *software* breakpoints only | |
3620 | if the section is still mapped, or else we overwrite | |
3621 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3622 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3623 | || section_is_mapped (bl->section)) | |
3624 | val = bl->owner->ops->remove_location (bl); | |
aa67235e UW |
3625 | else |
3626 | val = 0; | |
c906108c | 3627 | } |
c02f5703 MS |
3628 | else |
3629 | { | |
3630 | /* No -- not inserted, so no need to remove. No error. */ | |
3631 | val = 0; | |
3632 | } | |
c906108c | 3633 | } |
879d1e6b UW |
3634 | |
3635 | /* In some cases, we might not be able to remove a breakpoint | |
3636 | in a shared library that has already been removed, but we | |
3637 | have not yet processed the shlib unload event. */ | |
35df4500 | 3638 | if (val && solib_name_from_address (bl->pspace, bl->address)) |
879d1e6b UW |
3639 | val = 0; |
3640 | ||
c906108c SS |
3641 | if (val) |
3642 | return val; | |
35df4500 | 3643 | bl->inserted = (is == mark_inserted); |
c906108c | 3644 | } |
35df4500 | 3645 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3646 | { |
77b06cd7 TJB |
3647 | gdb_assert (bl->owner->ops != NULL |
3648 | && bl->owner->ops->remove_location != NULL); | |
3649 | ||
35df4500 | 3650 | bl->inserted = (is == mark_inserted); |
77b06cd7 | 3651 | bl->owner->ops->remove_location (bl); |
2e70b7b9 | 3652 | |
c906108c | 3653 | /* Failure to remove any of the hardware watchpoints comes here. */ |
35df4500 | 3654 | if ((is == mark_uninserted) && (bl->inserted)) |
8a3fe4f8 | 3655 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3656 | bl->owner->number); |
c906108c | 3657 | } |
35df4500 TJB |
3658 | else if (bl->owner->type == bp_catchpoint |
3659 | && breakpoint_enabled (bl->owner) | |
3660 | && !bl->duplicate) | |
ce78b96d | 3661 | { |
77b06cd7 TJB |
3662 | gdb_assert (bl->owner->ops != NULL |
3663 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 3664 | |
77b06cd7 | 3665 | val = bl->owner->ops->remove_location (bl); |
ce78b96d JB |
3666 | if (val) |
3667 | return val; | |
77b06cd7 | 3668 | |
35df4500 | 3669 | bl->inserted = (is == mark_inserted); |
ce78b96d | 3670 | } |
c906108c SS |
3671 | |
3672 | return 0; | |
3673 | } | |
3674 | ||
6c95b8df | 3675 | static int |
35df4500 | 3676 | remove_breakpoint (struct bp_location *bl, insertion_state_t is) |
6c95b8df PA |
3677 | { |
3678 | int ret; | |
3679 | struct cleanup *old_chain; | |
3680 | ||
35df4500 TJB |
3681 | /* BL is never in moribund_locations by our callers. */ |
3682 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3683 | |
35df4500 | 3684 | if (bl->owner->enable_state == bp_permanent) |
6c95b8df PA |
3685 | /* Permanent breakpoints cannot be inserted or removed. */ |
3686 | return 0; | |
3687 | ||
3688 | /* The type of none suggests that owner is actually deleted. | |
3689 | This should not ever happen. */ | |
35df4500 | 3690 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df PA |
3691 | |
3692 | old_chain = save_current_space_and_thread (); | |
3693 | ||
35df4500 | 3694 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 3695 | |
35df4500 | 3696 | ret = remove_breakpoint_1 (bl, is); |
6c95b8df PA |
3697 | |
3698 | do_cleanups (old_chain); | |
3699 | return ret; | |
3700 | } | |
3701 | ||
c906108c SS |
3702 | /* Clear the "inserted" flag in all breakpoints. */ |
3703 | ||
25b22b0a | 3704 | void |
fba45db2 | 3705 | mark_breakpoints_out (void) |
c906108c | 3706 | { |
35df4500 | 3707 | struct bp_location *bl, **blp_tmp; |
c906108c | 3708 | |
35df4500 TJB |
3709 | ALL_BP_LOCATIONS (bl, blp_tmp) |
3710 | if (bl->pspace == current_program_space) | |
3711 | bl->inserted = 0; | |
c906108c SS |
3712 | } |
3713 | ||
53a5351d JM |
3714 | /* Clear the "inserted" flag in all breakpoints and delete any |
3715 | breakpoints which should go away between runs of the program. | |
c906108c SS |
3716 | |
3717 | Plus other such housekeeping that has to be done for breakpoints | |
3718 | between runs. | |
3719 | ||
53a5351d JM |
3720 | Note: this function gets called at the end of a run (by |
3721 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 3722 | init_wait_for_inferior). */ |
c906108c SS |
3723 | |
3724 | ||
3725 | ||
3726 | void | |
fba45db2 | 3727 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 3728 | { |
35df4500 TJB |
3729 | struct breakpoint *b, *b_tmp; |
3730 | struct bp_location *bl, **blp_tmp; | |
1c5cfe86 | 3731 | int ix; |
6c95b8df | 3732 | struct program_space *pspace = current_program_space; |
c906108c | 3733 | |
50c71eaf PA |
3734 | /* If breakpoint locations are shared across processes, then there's |
3735 | nothing to do. */ | |
f5656ead | 3736 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
3737 | return; |
3738 | ||
35df4500 | 3739 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 3740 | { |
35df4500 TJB |
3741 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
3742 | if (bl->pspace == pspace | |
3743 | && bl->owner->enable_state != bp_permanent) | |
3744 | bl->inserted = 0; | |
6c95b8df | 3745 | } |
075f6582 | 3746 | |
35df4500 | 3747 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3748 | { |
6c95b8df PA |
3749 | if (b->loc && b->loc->pspace != pspace) |
3750 | continue; | |
3751 | ||
c5aa993b JM |
3752 | switch (b->type) |
3753 | { | |
3754 | case bp_call_dummy: | |
e2e4d78b | 3755 | case bp_longjmp_call_dummy: |
c906108c | 3756 | |
c5aa993b | 3757 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
3758 | cause problems when the inferior is rerun, so we better get |
3759 | rid of it. */ | |
3760 | ||
3761 | case bp_watchpoint_scope: | |
3762 | ||
3763 | /* Also get rid of scope breakpoints. */ | |
3764 | ||
3765 | case bp_shlib_event: | |
3766 | ||
3767 | /* Also remove solib event breakpoints. Their addresses may | |
3768 | have changed since the last time we ran the program. | |
3769 | Actually we may now be debugging against different target; | |
3770 | and so the solib backend that installed this breakpoint may | |
3771 | not be used in by the target. E.g., | |
3772 | ||
3773 | (gdb) file prog-linux | |
3774 | (gdb) run # native linux target | |
3775 | ... | |
3776 | (gdb) kill | |
3777 | (gdb) file prog-win.exe | |
3778 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
3779 | */ | |
c906108c | 3780 | |
f59f708a PA |
3781 | case bp_step_resume: |
3782 | ||
3783 | /* Also remove step-resume breakpoints. */ | |
3784 | ||
c5aa993b JM |
3785 | delete_breakpoint (b); |
3786 | break; | |
c906108c | 3787 | |
c5aa993b JM |
3788 | case bp_watchpoint: |
3789 | case bp_hardware_watchpoint: | |
3790 | case bp_read_watchpoint: | |
3791 | case bp_access_watchpoint: | |
3a5c3e22 PA |
3792 | { |
3793 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 3794 | |
3a5c3e22 PA |
3795 | /* Likewise for watchpoints on local expressions. */ |
3796 | if (w->exp_valid_block != NULL) | |
3797 | delete_breakpoint (b); | |
3798 | else if (context == inf_starting) | |
3799 | { | |
3800 | /* Reset val field to force reread of starting value in | |
3801 | insert_breakpoints. */ | |
3802 | if (w->val) | |
3803 | value_free (w->val); | |
3804 | w->val = NULL; | |
3805 | w->val_valid = 0; | |
c860120c | 3806 | } |
3a5c3e22 | 3807 | } |
c5aa993b JM |
3808 | break; |
3809 | default: | |
c5aa993b JM |
3810 | break; |
3811 | } | |
3812 | } | |
1c5cfe86 PA |
3813 | |
3814 | /* Get rid of the moribund locations. */ | |
35df4500 TJB |
3815 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix) |
3816 | decref_bp_location (&bl); | |
1c5cfe86 | 3817 | VEC_free (bp_location_p, moribund_locations); |
c906108c SS |
3818 | } |
3819 | ||
6c95b8df PA |
3820 | /* These functions concern about actual breakpoints inserted in the |
3821 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
3822 | we need to hop over the bkpt --- so we check for address space | |
3823 | match, not program space. */ | |
3824 | ||
c2c6d25f JM |
3825 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
3826 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
3827 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
3828 | permanent breakpoint. | |
3829 | - When continuing from a location with an ordinary breakpoint, we | |
3830 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 3831 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
3832 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
3833 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 3834 | |
c2c6d25f | 3835 | enum breakpoint_here |
6c95b8df | 3836 | breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 3837 | { |
35df4500 | 3838 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 3839 | int any_breakpoint_here = 0; |
c906108c | 3840 | |
35df4500 | 3841 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 3842 | { |
35df4500 TJB |
3843 | if (bl->loc_type != bp_loc_software_breakpoint |
3844 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3845 | continue; |
3846 | ||
f1310107 | 3847 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 TJB |
3848 | if ((breakpoint_enabled (bl->owner) |
3849 | || bl->owner->enable_state == bp_permanent) | |
f1310107 | 3850 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
3851 | { |
3852 | if (overlay_debugging | |
35df4500 TJB |
3853 | && section_is_overlay (bl->section) |
3854 | && !section_is_mapped (bl->section)) | |
075f6582 | 3855 | continue; /* unmapped overlay -- can't be a match */ |
35df4500 | 3856 | else if (bl->owner->enable_state == bp_permanent) |
075f6582 DJ |
3857 | return permanent_breakpoint_here; |
3858 | else | |
3859 | any_breakpoint_here = 1; | |
3860 | } | |
3861 | } | |
c906108c | 3862 | |
c2c6d25f | 3863 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
3864 | } |
3865 | ||
1c5cfe86 PA |
3866 | /* Return true if there's a moribund breakpoint at PC. */ |
3867 | ||
3868 | int | |
6c95b8df | 3869 | moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
3870 | { |
3871 | struct bp_location *loc; | |
3872 | int ix; | |
3873 | ||
3874 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
f1310107 | 3875 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
3876 | return 1; |
3877 | ||
3878 | return 0; | |
3879 | } | |
c2c6d25f | 3880 | |
c36b740a | 3881 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
4a64f543 MS |
3882 | inserted using regular breakpoint_chain / bp_location array |
3883 | mechanism. This does not check for single-step breakpoints, which | |
3884 | are inserted and removed using direct target manipulation. */ | |
c906108c SS |
3885 | |
3886 | int | |
4a64f543 MS |
3887 | regular_breakpoint_inserted_here_p (struct address_space *aspace, |
3888 | CORE_ADDR pc) | |
c906108c | 3889 | { |
35df4500 | 3890 | struct bp_location *bl, **blp_tmp; |
c906108c | 3891 | |
35df4500 | 3892 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3893 | { |
35df4500 TJB |
3894 | if (bl->loc_type != bp_loc_software_breakpoint |
3895 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3896 | continue; |
3897 | ||
35df4500 | 3898 | if (bl->inserted |
f1310107 | 3899 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
3900 | { |
3901 | if (overlay_debugging | |
35df4500 TJB |
3902 | && section_is_overlay (bl->section) |
3903 | && !section_is_mapped (bl->section)) | |
075f6582 DJ |
3904 | continue; /* unmapped overlay -- can't be a match */ |
3905 | else | |
3906 | return 1; | |
3907 | } | |
c5aa993b | 3908 | } |
c36b740a VP |
3909 | return 0; |
3910 | } | |
3911 | ||
3912 | /* Returns non-zero iff there's either regular breakpoint | |
3913 | or a single step breakpoint inserted at PC. */ | |
3914 | ||
3915 | int | |
6c95b8df | 3916 | breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c36b740a | 3917 | { |
6c95b8df | 3918 | if (regular_breakpoint_inserted_here_p (aspace, pc)) |
c36b740a | 3919 | return 1; |
c906108c | 3920 | |
6c95b8df | 3921 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
3922 | return 1; |
3923 | ||
c906108c SS |
3924 | return 0; |
3925 | } | |
3926 | ||
4fa8626c DJ |
3927 | /* This function returns non-zero iff there is a software breakpoint |
3928 | inserted at PC. */ | |
3929 | ||
3930 | int | |
3e43a32a MS |
3931 | software_breakpoint_inserted_here_p (struct address_space *aspace, |
3932 | CORE_ADDR pc) | |
4fa8626c | 3933 | { |
35df4500 | 3934 | struct bp_location *bl, **blp_tmp; |
4fa8626c | 3935 | |
35df4500 | 3936 | ALL_BP_LOCATIONS (bl, blp_tmp) |
4fa8626c | 3937 | { |
35df4500 | 3938 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
3939 | continue; |
3940 | ||
35df4500 TJB |
3941 | if (bl->inserted |
3942 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6c95b8df | 3943 | aspace, pc)) |
4fa8626c DJ |
3944 | { |
3945 | if (overlay_debugging | |
35df4500 TJB |
3946 | && section_is_overlay (bl->section) |
3947 | && !section_is_mapped (bl->section)) | |
4fa8626c DJ |
3948 | continue; /* unmapped overlay -- can't be a match */ |
3949 | else | |
3950 | return 1; | |
3951 | } | |
3952 | } | |
3953 | ||
1aafd4da | 3954 | /* Also check for software single-step breakpoints. */ |
6c95b8df | 3955 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
3956 | return 1; |
3957 | ||
4fa8626c DJ |
3958 | return 0; |
3959 | } | |
3960 | ||
9093389c PA |
3961 | int |
3962 | hardware_watchpoint_inserted_in_range (struct address_space *aspace, | |
3963 | CORE_ADDR addr, ULONGEST len) | |
3964 | { | |
3965 | struct breakpoint *bpt; | |
3966 | ||
3967 | ALL_BREAKPOINTS (bpt) | |
3968 | { | |
3969 | struct bp_location *loc; | |
3970 | ||
3971 | if (bpt->type != bp_hardware_watchpoint | |
3972 | && bpt->type != bp_access_watchpoint) | |
3973 | continue; | |
3974 | ||
3975 | if (!breakpoint_enabled (bpt)) | |
3976 | continue; | |
3977 | ||
3978 | for (loc = bpt->loc; loc; loc = loc->next) | |
3979 | if (loc->pspace->aspace == aspace && loc->inserted) | |
3980 | { | |
3981 | CORE_ADDR l, h; | |
3982 | ||
3983 | /* Check for intersection. */ | |
3984 | l = max (loc->address, addr); | |
3985 | h = min (loc->address + loc->length, addr + len); | |
3986 | if (l < h) | |
3987 | return 1; | |
3988 | } | |
3989 | } | |
3990 | return 0; | |
3991 | } | |
3992 | ||
075f6582 DJ |
3993 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
3994 | PC is valid for process/thread PTID. */ | |
c906108c SS |
3995 | |
3996 | int | |
6c95b8df PA |
3997 | breakpoint_thread_match (struct address_space *aspace, CORE_ADDR pc, |
3998 | ptid_t ptid) | |
c906108c | 3999 | { |
35df4500 | 4000 | struct bp_location *bl, **blp_tmp; |
4a306c9a | 4001 | /* The thread and task IDs associated to PTID, computed lazily. */ |
a6f1cd96 | 4002 | int thread = -1; |
4a306c9a | 4003 | int task = 0; |
a6f1cd96 | 4004 | |
35df4500 | 4005 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 4006 | { |
35df4500 TJB |
4007 | if (bl->loc_type != bp_loc_software_breakpoint |
4008 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4009 | continue; |
4010 | ||
35df4500 TJB |
4011 | /* ALL_BP_LOCATIONS bp_location has bl->OWNER always non-NULL. */ |
4012 | if (!breakpoint_enabled (bl->owner) | |
4013 | && bl->owner->enable_state != bp_permanent) | |
a6f1cd96 JB |
4014 | continue; |
4015 | ||
f1310107 | 4016 | if (!breakpoint_location_address_match (bl, aspace, pc)) |
a6f1cd96 JB |
4017 | continue; |
4018 | ||
35df4500 | 4019 | if (bl->owner->thread != -1) |
075f6582 | 4020 | { |
a6f1cd96 JB |
4021 | /* This is a thread-specific breakpoint. Check that ptid |
4022 | matches that thread. If thread hasn't been computed yet, | |
4023 | it is now time to do so. */ | |
4024 | if (thread == -1) | |
4025 | thread = pid_to_thread_id (ptid); | |
35df4500 | 4026 | if (bl->owner->thread != thread) |
a6f1cd96 | 4027 | continue; |
075f6582 | 4028 | } |
a6f1cd96 | 4029 | |
35df4500 | 4030 | if (bl->owner->task != 0) |
4a306c9a JB |
4031 | { |
4032 | /* This is a task-specific breakpoint. Check that ptid | |
4033 | matches that task. If task hasn't been computed yet, | |
4034 | it is now time to do so. */ | |
4035 | if (task == 0) | |
4036 | task = ada_get_task_number (ptid); | |
35df4500 | 4037 | if (bl->owner->task != task) |
4a306c9a JB |
4038 | continue; |
4039 | } | |
4040 | ||
a6f1cd96 | 4041 | if (overlay_debugging |
35df4500 TJB |
4042 | && section_is_overlay (bl->section) |
4043 | && !section_is_mapped (bl->section)) | |
a6f1cd96 JB |
4044 | continue; /* unmapped overlay -- can't be a match */ |
4045 | ||
4046 | return 1; | |
c5aa993b | 4047 | } |
c906108c SS |
4048 | |
4049 | return 0; | |
4050 | } | |
c906108c | 4051 | \f |
c5aa993b | 4052 | |
c906108c SS |
4053 | /* bpstat stuff. External routines' interfaces are documented |
4054 | in breakpoint.h. */ | |
4055 | ||
4056 | int | |
c326b90e | 4057 | is_catchpoint (struct breakpoint *ep) |
c906108c | 4058 | { |
533be4dd | 4059 | return (ep->type == bp_catchpoint); |
c906108c SS |
4060 | } |
4061 | ||
f431efe5 PA |
4062 | /* Frees any storage that is part of a bpstat. Does not walk the |
4063 | 'next' chain. */ | |
4064 | ||
4065 | static void | |
198757a8 VP |
4066 | bpstat_free (bpstat bs) |
4067 | { | |
4068 | if (bs->old_val != NULL) | |
4069 | value_free (bs->old_val); | |
9add0f1b | 4070 | decref_counted_command_line (&bs->commands); |
f431efe5 | 4071 | decref_bp_location (&bs->bp_location_at); |
198757a8 VP |
4072 | xfree (bs); |
4073 | } | |
4074 | ||
c906108c SS |
4075 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4076 | Also free any storage that is part of a bpstat. */ | |
4077 | ||
4078 | void | |
fba45db2 | 4079 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4080 | { |
4081 | bpstat p; | |
4082 | bpstat q; | |
4083 | ||
4084 | if (bsp == 0) | |
4085 | return; | |
4086 | p = *bsp; | |
4087 | while (p != NULL) | |
4088 | { | |
4089 | q = p->next; | |
198757a8 | 4090 | bpstat_free (p); |
c906108c SS |
4091 | p = q; |
4092 | } | |
4093 | *bsp = NULL; | |
4094 | } | |
4095 | ||
4096 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
4097 | is part of the bpstat is copied as well. */ | |
4098 | ||
4099 | bpstat | |
fba45db2 | 4100 | bpstat_copy (bpstat bs) |
c906108c SS |
4101 | { |
4102 | bpstat p = NULL; | |
4103 | bpstat tmp; | |
4104 | bpstat retval = NULL; | |
4105 | ||
4106 | if (bs == NULL) | |
4107 | return bs; | |
4108 | ||
4109 | for (; bs != NULL; bs = bs->next) | |
4110 | { | |
4111 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
4112 | memcpy (tmp, bs, sizeof (*tmp)); | |
9add0f1b | 4113 | incref_counted_command_line (tmp->commands); |
f431efe5 | 4114 | incref_bp_location (tmp->bp_location_at); |
31cc81e9 | 4115 | if (bs->old_val != NULL) |
3c3185ac JK |
4116 | { |
4117 | tmp->old_val = value_copy (bs->old_val); | |
4118 | release_value (tmp->old_val); | |
4119 | } | |
31cc81e9 | 4120 | |
c906108c SS |
4121 | if (p == NULL) |
4122 | /* This is the first thing in the chain. */ | |
4123 | retval = tmp; | |
4124 | else | |
4125 | p->next = tmp; | |
4126 | p = tmp; | |
4127 | } | |
4128 | p->next = NULL; | |
4129 | return retval; | |
4130 | } | |
4131 | ||
4a64f543 | 4132 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4133 | |
4134 | bpstat | |
fba45db2 | 4135 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4136 | { |
c5aa993b JM |
4137 | if (bsp == NULL) |
4138 | return NULL; | |
c906108c | 4139 | |
c5aa993b JM |
4140 | for (; bsp != NULL; bsp = bsp->next) |
4141 | { | |
f431efe5 | 4142 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4143 | return bsp; |
4144 | } | |
c906108c SS |
4145 | return NULL; |
4146 | } | |
4147 | ||
4a64f543 MS |
4148 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4149 | stopped at. *BSP upon return is a bpstat which points to the | |
4150 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4151 | good for anything but further calls to bpstat_num). | |
4152 | ||
8671a17b PA |
4153 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4154 | Return -1 if stopped at a breakpoint that has been deleted since | |
4155 | we set it. | |
4156 | Return 1 otherwise. */ | |
c906108c SS |
4157 | |
4158 | int | |
8671a17b | 4159 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4160 | { |
4161 | struct breakpoint *b; | |
4162 | ||
4163 | if ((*bsp) == NULL) | |
4164 | return 0; /* No more breakpoint values */ | |
8671a17b | 4165 | |
4a64f543 MS |
4166 | /* We assume we'll never have several bpstats that correspond to a |
4167 | single breakpoint -- otherwise, this function might return the | |
4168 | same number more than once and this will look ugly. */ | |
f431efe5 | 4169 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4170 | *bsp = (*bsp)->next; |
4171 | if (b == NULL) | |
4172 | return -1; /* breakpoint that's been deleted since */ | |
4173 | ||
4174 | *num = b->number; /* We have its number */ | |
4175 | return 1; | |
c906108c SS |
4176 | } |
4177 | ||
e93ca019 | 4178 | /* See breakpoint.h. */ |
c906108c SS |
4179 | |
4180 | void | |
e93ca019 | 4181 | bpstat_clear_actions (void) |
c906108c | 4182 | { |
e93ca019 JK |
4183 | struct thread_info *tp; |
4184 | bpstat bs; | |
4185 | ||
4186 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4187 | return; | |
4188 | ||
4189 | tp = find_thread_ptid (inferior_ptid); | |
4190 | if (tp == NULL) | |
4191 | return; | |
4192 | ||
4193 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) | |
c906108c | 4194 | { |
9add0f1b | 4195 | decref_counted_command_line (&bs->commands); |
abf85f46 | 4196 | |
c906108c SS |
4197 | if (bs->old_val != NULL) |
4198 | { | |
4199 | value_free (bs->old_val); | |
4200 | bs->old_val = NULL; | |
4201 | } | |
4202 | } | |
4203 | } | |
4204 | ||
f3b1572e PA |
4205 | /* Called when a command is about to proceed the inferior. */ |
4206 | ||
4207 | static void | |
4208 | breakpoint_about_to_proceed (void) | |
4209 | { | |
4210 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
4211 | { | |
4212 | struct thread_info *tp = inferior_thread (); | |
4213 | ||
4214 | /* Allow inferior function calls in breakpoint commands to not | |
4215 | interrupt the command list. When the call finishes | |
4216 | successfully, the inferior will be standing at the same | |
4217 | breakpoint as if nothing happened. */ | |
16c381f0 | 4218 | if (tp->control.in_infcall) |
f3b1572e PA |
4219 | return; |
4220 | } | |
4221 | ||
4222 | breakpoint_proceeded = 1; | |
4223 | } | |
4224 | ||
4a64f543 MS |
4225 | /* Stub for cleaning up our state if we error-out of a breakpoint |
4226 | command. */ | |
c906108c | 4227 | static void |
4efb68b1 | 4228 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
4229 | { |
4230 | executing_breakpoint_commands = 0; | |
4231 | } | |
4232 | ||
abf85f46 JK |
4233 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4234 | or its equivalent. */ | |
4235 | ||
4236 | static int | |
4237 | command_line_is_silent (struct command_line *cmd) | |
4238 | { | |
4239 | return cmd && (strcmp ("silent", cmd->line) == 0 | |
4240 | || (xdb_commands && strcmp ("Q", cmd->line) == 0)); | |
4241 | } | |
4242 | ||
4a64f543 MS |
4243 | /* Execute all the commands associated with all the breakpoints at |
4244 | this location. Any of these commands could cause the process to | |
4245 | proceed beyond this point, etc. We look out for such changes by | |
4246 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4247 | |
347bddb7 PA |
4248 | Returns true if a breakpoint command resumed the inferior. In that |
4249 | case, it is the caller's responsibility to recall it again with the | |
4250 | bpstat of the current thread. */ | |
4251 | ||
4252 | static int | |
4253 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4254 | { |
4255 | bpstat bs; | |
4256 | struct cleanup *old_chain; | |
347bddb7 | 4257 | int again = 0; |
c906108c SS |
4258 | |
4259 | /* Avoid endless recursion if a `source' command is contained | |
4260 | in bs->commands. */ | |
4261 | if (executing_breakpoint_commands) | |
347bddb7 | 4262 | return 0; |
c906108c SS |
4263 | |
4264 | executing_breakpoint_commands = 1; | |
4265 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
4266 | ||
cf6c5ffb TT |
4267 | prevent_dont_repeat (); |
4268 | ||
4a64f543 | 4269 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4270 | bs = *bsp; |
4271 | ||
4272 | breakpoint_proceeded = 0; | |
4273 | for (; bs != NULL; bs = bs->next) | |
4274 | { | |
9add0f1b | 4275 | struct counted_command_line *ccmd; |
6c50ab1c JB |
4276 | struct command_line *cmd; |
4277 | struct cleanup *this_cmd_tree_chain; | |
4278 | ||
4279 | /* Take ownership of the BSP's command tree, if it has one. | |
4280 | ||
4281 | The command tree could legitimately contain commands like | |
4282 | 'step' and 'next', which call clear_proceed_status, which | |
4283 | frees stop_bpstat's command tree. To make sure this doesn't | |
4284 | free the tree we're executing out from under us, we need to | |
4285 | take ownership of the tree ourselves. Since a given bpstat's | |
4286 | commands are only executed once, we don't need to copy it; we | |
4287 | can clear the pointer in the bpstat, and make sure we free | |
4288 | the tree when we're done. */ | |
9add0f1b TT |
4289 | ccmd = bs->commands; |
4290 | bs->commands = NULL; | |
abf85f46 JK |
4291 | this_cmd_tree_chain = make_cleanup_decref_counted_command_line (&ccmd); |
4292 | cmd = ccmd ? ccmd->commands : NULL; | |
4293 | if (command_line_is_silent (cmd)) | |
4294 | { | |
4295 | /* The action has been already done by bpstat_stop_status. */ | |
4296 | cmd = cmd->next; | |
4297 | } | |
6c50ab1c | 4298 | |
c906108c SS |
4299 | while (cmd != NULL) |
4300 | { | |
4301 | execute_control_command (cmd); | |
4302 | ||
4303 | if (breakpoint_proceeded) | |
4304 | break; | |
4305 | else | |
4306 | cmd = cmd->next; | |
4307 | } | |
6c50ab1c JB |
4308 | |
4309 | /* We can free this command tree now. */ | |
4310 | do_cleanups (this_cmd_tree_chain); | |
4311 | ||
c906108c | 4312 | if (breakpoint_proceeded) |
32c1e744 VP |
4313 | { |
4314 | if (target_can_async_p ()) | |
347bddb7 PA |
4315 | /* If we are in async mode, then the target might be still |
4316 | running, not stopped at any breakpoint, so nothing for | |
4317 | us to do here -- just return to the event loop. */ | |
4318 | ; | |
32c1e744 VP |
4319 | else |
4320 | /* In sync mode, when execute_control_command returns | |
4321 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4322 | Breakpoint commands for that stop were not run, since |
4323 | execute_command does not run breakpoint commands -- | |
4324 | only command_line_handler does, but that one is not | |
4325 | involved in execution of breakpoint commands. So, we | |
4326 | can now execute breakpoint commands. It should be | |
4327 | noted that making execute_command do bpstat actions is | |
4328 | not an option -- in this case we'll have recursive | |
4329 | invocation of bpstat for each breakpoint with a | |
4330 | command, and can easily blow up GDB stack. Instead, we | |
4331 | return true, which will trigger the caller to recall us | |
4332 | with the new stop_bpstat. */ | |
4333 | again = 1; | |
4334 | break; | |
32c1e744 | 4335 | } |
c906108c | 4336 | } |
c2b8ed2c | 4337 | do_cleanups (old_chain); |
347bddb7 PA |
4338 | return again; |
4339 | } | |
4340 | ||
4341 | void | |
4342 | bpstat_do_actions (void) | |
4343 | { | |
353d1d73 JK |
4344 | struct cleanup *cleanup_if_error = make_bpstat_clear_actions_cleanup (); |
4345 | ||
347bddb7 PA |
4346 | /* Do any commands attached to breakpoint we are stopped at. */ |
4347 | while (!ptid_equal (inferior_ptid, null_ptid) | |
4348 | && target_has_execution | |
4349 | && !is_exited (inferior_ptid) | |
4350 | && !is_executing (inferior_ptid)) | |
4351 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
4352 | and only return when it is stopped at the next breakpoint, we | |
4353 | keep doing breakpoint actions until it returns false to | |
4354 | indicate the inferior was not resumed. */ | |
16c381f0 | 4355 | if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) |
347bddb7 | 4356 | break; |
353d1d73 JK |
4357 | |
4358 | discard_cleanups (cleanup_if_error); | |
c906108c SS |
4359 | } |
4360 | ||
fa4727a6 DJ |
4361 | /* Print out the (old or new) value associated with a watchpoint. */ |
4362 | ||
4363 | static void | |
4364 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4365 | { | |
4366 | if (val == NULL) | |
4367 | fprintf_unfiltered (stream, _("<unreadable>")); | |
4368 | else | |
79a45b7d TT |
4369 | { |
4370 | struct value_print_options opts; | |
4371 | get_user_print_options (&opts); | |
4372 | value_print (val, stream, &opts); | |
4373 | } | |
fa4727a6 DJ |
4374 | } |
4375 | ||
e514a9d6 | 4376 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4377 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4378 | 'print_it' in the bpstat structure. Under some circumstances we |
4379 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4380 | normal_stop(). */ |
e514a9d6 JM |
4381 | |
4382 | static enum print_stop_action | |
4383 | print_bp_stop_message (bpstat bs) | |
4384 | { | |
4385 | switch (bs->print_it) | |
4386 | { | |
4387 | case print_it_noop: | |
4a64f543 | 4388 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4389 | return PRINT_UNKNOWN; |
4390 | break; | |
4391 | ||
4392 | case print_it_done: | |
4393 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 4394 | relevant messages. */ |
e514a9d6 JM |
4395 | return PRINT_SRC_AND_LOC; |
4396 | break; | |
4397 | ||
4398 | case print_it_normal: | |
4f8d1dc6 | 4399 | { |
f431efe5 PA |
4400 | struct breakpoint *b = bs->breakpoint_at; |
4401 | ||
1a6a67de TJB |
4402 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4403 | which has since been deleted. */ | |
4404 | if (b == NULL) | |
4405 | return PRINT_UNKNOWN; | |
4406 | ||
348d480f PA |
4407 | /* Normal case. Call the breakpoint's print_it method. */ |
4408 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4409 | } |
348d480f | 4410 | break; |
3086aeae | 4411 | |
e514a9d6 | 4412 | default: |
8e65ff28 | 4413 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4414 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4415 | break; |
c906108c | 4416 | } |
c906108c SS |
4417 | } |
4418 | ||
edcc5120 TT |
4419 | /* A helper function that prints a shared library stopped event. */ |
4420 | ||
4421 | static void | |
4422 | print_solib_event (int is_catchpoint) | |
4423 | { | |
4424 | int any_deleted | |
4425 | = !VEC_empty (char_ptr, current_program_space->deleted_solibs); | |
4426 | int any_added | |
4427 | = !VEC_empty (so_list_ptr, current_program_space->added_solibs); | |
4428 | ||
4429 | if (!is_catchpoint) | |
4430 | { | |
4431 | if (any_added || any_deleted) | |
4432 | ui_out_text (current_uiout, | |
4433 | _("Stopped due to shared library event:\n")); | |
4434 | else | |
4435 | ui_out_text (current_uiout, | |
4436 | _("Stopped due to shared library event (no " | |
4437 | "libraries added or removed)\n")); | |
4438 | } | |
4439 | ||
4440 | if (ui_out_is_mi_like_p (current_uiout)) | |
4441 | ui_out_field_string (current_uiout, "reason", | |
4442 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
4443 | ||
4444 | if (any_deleted) | |
4445 | { | |
4446 | struct cleanup *cleanup; | |
4447 | char *name; | |
4448 | int ix; | |
4449 | ||
4450 | ui_out_text (current_uiout, _(" Inferior unloaded ")); | |
4451 | cleanup = make_cleanup_ui_out_list_begin_end (current_uiout, | |
4452 | "removed"); | |
4453 | for (ix = 0; | |
4454 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
4455 | ix, name); | |
4456 | ++ix) | |
4457 | { | |
4458 | if (ix > 0) | |
4459 | ui_out_text (current_uiout, " "); | |
4460 | ui_out_field_string (current_uiout, "library", name); | |
4461 | ui_out_text (current_uiout, "\n"); | |
4462 | } | |
4463 | ||
4464 | do_cleanups (cleanup); | |
4465 | } | |
4466 | ||
4467 | if (any_added) | |
4468 | { | |
4469 | struct so_list *iter; | |
4470 | int ix; | |
4471 | struct cleanup *cleanup; | |
4472 | ||
4473 | ui_out_text (current_uiout, _(" Inferior loaded ")); | |
4474 | cleanup = make_cleanup_ui_out_list_begin_end (current_uiout, | |
4475 | "added"); | |
4476 | for (ix = 0; | |
4477 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
4478 | ix, iter); | |
4479 | ++ix) | |
4480 | { | |
4481 | if (ix > 0) | |
4482 | ui_out_text (current_uiout, " "); | |
4483 | ui_out_field_string (current_uiout, "library", iter->so_name); | |
4484 | ui_out_text (current_uiout, "\n"); | |
4485 | } | |
4486 | ||
4487 | do_cleanups (cleanup); | |
4488 | } | |
4489 | } | |
4490 | ||
e514a9d6 JM |
4491 | /* Print a message indicating what happened. This is called from |
4492 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4493 | list - a list of the eventpoints that caused this stop. KIND is |
4494 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4495 | routine calls the generic print routine for printing a message |
4496 | about reasons for stopping. This will print (for example) the | |
4497 | "Breakpoint n," part of the output. The return value of this | |
4498 | routine is one of: | |
c906108c | 4499 | |
4a64f543 | 4500 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4501 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4502 | code to print the location. An example is |
c5aa993b JM |
4503 | "Breakpoint 1, " which should be followed by |
4504 | the location. | |
917317f4 | 4505 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4506 | to also print the location part of the message. |
4507 | An example is the catch/throw messages, which | |
4a64f543 | 4508 | don't require a location appended to the end. |
917317f4 | 4509 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4510 | further info to be printed. */ |
c906108c | 4511 | |
917317f4 | 4512 | enum print_stop_action |
36dfb11c | 4513 | bpstat_print (bpstat bs, int kind) |
c906108c SS |
4514 | { |
4515 | int val; | |
c5aa993b | 4516 | |
c906108c | 4517 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4518 | (Currently all watchpoints go on the bpstat whether hit or not. |
4519 | That probably could (should) be changed, provided care is taken | |
c906108c | 4520 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4521 | for (; bs; bs = bs->next) |
4522 | { | |
4523 | val = print_bp_stop_message (bs); | |
4524 | if (val == PRINT_SRC_ONLY | |
4525 | || val == PRINT_SRC_AND_LOC | |
4526 | || val == PRINT_NOTHING) | |
4527 | return val; | |
4528 | } | |
c906108c | 4529 | |
36dfb11c TT |
4530 | /* If we had hit a shared library event breakpoint, |
4531 | print_bp_stop_message would print out this message. If we hit an | |
4532 | OS-level shared library event, do the same thing. */ | |
4533 | if (kind == TARGET_WAITKIND_LOADED) | |
4534 | { | |
edcc5120 | 4535 | print_solib_event (0); |
36dfb11c TT |
4536 | return PRINT_NOTHING; |
4537 | } | |
4538 | ||
e514a9d6 | 4539 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4540 | with and nothing was printed. */ |
917317f4 | 4541 | return PRINT_UNKNOWN; |
c906108c SS |
4542 | } |
4543 | ||
4a64f543 MS |
4544 | /* Evaluate the expression EXP and return 1 if value is zero. This is |
4545 | used inside a catch_errors to evaluate the breakpoint condition. | |
4546 | The argument is a "struct expression *" that has been cast to a | |
4547 | "char *" to make it pass through catch_errors. */ | |
c906108c SS |
4548 | |
4549 | static int | |
4efb68b1 | 4550 | breakpoint_cond_eval (void *exp) |
c906108c | 4551 | { |
278cd55f | 4552 | struct value *mark = value_mark (); |
c5aa993b | 4553 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
cc59ec59 | 4554 | |
c906108c SS |
4555 | value_free_to_mark (mark); |
4556 | return i; | |
4557 | } | |
4558 | ||
5760d0ab | 4559 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c SS |
4560 | |
4561 | static bpstat | |
5760d0ab | 4562 | bpstat_alloc (struct bp_location *bl, bpstat **bs_link_pointer) |
c906108c SS |
4563 | { |
4564 | bpstat bs; | |
4565 | ||
4566 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
5760d0ab JK |
4567 | bs->next = NULL; |
4568 | **bs_link_pointer = bs; | |
4569 | *bs_link_pointer = &bs->next; | |
f431efe5 PA |
4570 | bs->breakpoint_at = bl->owner; |
4571 | bs->bp_location_at = bl; | |
4572 | incref_bp_location (bl); | |
c906108c SS |
4573 | /* If the condition is false, etc., don't do the commands. */ |
4574 | bs->commands = NULL; | |
4575 | bs->old_val = NULL; | |
4576 | bs->print_it = print_it_normal; | |
4577 | return bs; | |
4578 | } | |
4579 | \f | |
d983da9c DJ |
4580 | /* The target has stopped with waitstatus WS. Check if any hardware |
4581 | watchpoints have triggered, according to the target. */ | |
4582 | ||
4583 | int | |
4584 | watchpoints_triggered (struct target_waitstatus *ws) | |
4585 | { | |
d92524f1 | 4586 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
4587 | CORE_ADDR addr; |
4588 | struct breakpoint *b; | |
4589 | ||
4590 | if (!stopped_by_watchpoint) | |
4591 | { | |
4592 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4593 | as not triggered. */ | |
4594 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4595 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4596 | { |
4597 | struct watchpoint *w = (struct watchpoint *) b; | |
4598 | ||
4599 | w->watchpoint_triggered = watch_triggered_no; | |
4600 | } | |
d983da9c DJ |
4601 | |
4602 | return 0; | |
4603 | } | |
4604 | ||
4605 | if (!target_stopped_data_address (¤t_target, &addr)) | |
4606 | { | |
4607 | /* We were stopped by a watchpoint, but we don't know where. | |
4608 | Mark all watchpoints as unknown. */ | |
4609 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4610 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4611 | { |
4612 | struct watchpoint *w = (struct watchpoint *) b; | |
4613 | ||
4614 | w->watchpoint_triggered = watch_triggered_unknown; | |
4615 | } | |
d983da9c DJ |
4616 | |
4617 | return stopped_by_watchpoint; | |
4618 | } | |
4619 | ||
4620 | /* The target could report the data address. Mark watchpoints | |
4621 | affected by this data address as triggered, and all others as not | |
4622 | triggered. */ | |
4623 | ||
4624 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4625 | if (is_hardware_watchpoint (b)) |
d983da9c | 4626 | { |
3a5c3e22 | 4627 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 4628 | struct bp_location *loc; |
d983da9c | 4629 | |
3a5c3e22 | 4630 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 4631 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 4632 | { |
3a5c3e22 | 4633 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4634 | { |
3a5c3e22 PA |
4635 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4636 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4637 | |
4638 | if (newaddr == start) | |
4639 | { | |
3a5c3e22 | 4640 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4641 | break; |
4642 | } | |
4643 | } | |
4644 | /* Exact match not required. Within range is sufficient. */ | |
4645 | else if (target_watchpoint_addr_within_range (¤t_target, | |
4646 | addr, loc->address, | |
4647 | loc->length)) | |
4648 | { | |
3a5c3e22 | 4649 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4650 | break; |
4651 | } | |
4652 | } | |
d983da9c DJ |
4653 | } |
4654 | ||
4655 | return 1; | |
4656 | } | |
4657 | ||
c906108c SS |
4658 | /* Possible return values for watchpoint_check (this can't be an enum |
4659 | because of check_errors). */ | |
4660 | /* The watchpoint has been deleted. */ | |
4661 | #define WP_DELETED 1 | |
4662 | /* The value has changed. */ | |
4663 | #define WP_VALUE_CHANGED 2 | |
4664 | /* The value has not changed. */ | |
4665 | #define WP_VALUE_NOT_CHANGED 3 | |
60e1c644 PA |
4666 | /* Ignore this watchpoint, no matter if the value changed or not. */ |
4667 | #define WP_IGNORE 4 | |
c906108c SS |
4668 | |
4669 | #define BP_TEMPFLAG 1 | |
4670 | #define BP_HARDWAREFLAG 2 | |
4671 | ||
4a64f543 MS |
4672 | /* Evaluate watchpoint condition expression and check if its value |
4673 | changed. | |
553e4c11 JB |
4674 | |
4675 | P should be a pointer to struct bpstat, but is defined as a void * | |
4676 | in order for this function to be usable with catch_errors. */ | |
c906108c SS |
4677 | |
4678 | static int | |
4efb68b1 | 4679 | watchpoint_check (void *p) |
c906108c SS |
4680 | { |
4681 | bpstat bs = (bpstat) p; | |
3a5c3e22 | 4682 | struct watchpoint *b; |
c906108c SS |
4683 | struct frame_info *fr; |
4684 | int within_current_scope; | |
4685 | ||
f431efe5 | 4686 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4687 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4688 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4689 | |
f6bc2008 PA |
4690 | /* If this is a local watchpoint, we only want to check if the |
4691 | watchpoint frame is in scope if the current thread is the thread | |
4692 | that was used to create the watchpoint. */ | |
4693 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4694 | return WP_IGNORE; |
f6bc2008 | 4695 | |
c906108c SS |
4696 | if (b->exp_valid_block == NULL) |
4697 | within_current_scope = 1; | |
4698 | else | |
4699 | { | |
edb3359d DJ |
4700 | struct frame_info *frame = get_current_frame (); |
4701 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4702 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4703 | ||
4a64f543 MS |
4704 | /* in_function_epilogue_p() returns a non-zero value if we're |
4705 | still in the function but the stack frame has already been | |
4706 | invalidated. Since we can't rely on the values of local | |
4707 | variables after the stack has been destroyed, we are treating | |
4708 | the watchpoint in that state as `not changed' without further | |
4709 | checking. Don't mark watchpoints as changed if the current | |
4710 | frame is in an epilogue - even if they are in some other | |
4711 | frame, our view of the stack is likely to be wrong and | |
4712 | frame_find_by_id could error out. */ | |
a0f49112 | 4713 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) |
60e1c644 | 4714 | return WP_IGNORE; |
a0f49112 | 4715 | |
101dcfbe | 4716 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 4717 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
4718 | |
4719 | /* If we've gotten confused in the unwinder, we might have | |
4720 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
4721 | if (within_current_scope) |
4722 | { | |
4723 | struct symbol *function; | |
4724 | ||
4725 | function = get_frame_function (fr); | |
4726 | if (function == NULL | |
4727 | || !contained_in (b->exp_valid_block, | |
4728 | SYMBOL_BLOCK_VALUE (function))) | |
4729 | within_current_scope = 0; | |
4730 | } | |
69fbadd5 | 4731 | |
edb3359d | 4732 | if (within_current_scope) |
c906108c SS |
4733 | /* If we end up stopping, the current frame will get selected |
4734 | in normal_stop. So this call to select_frame won't affect | |
4735 | the user. */ | |
0f7d239c | 4736 | select_frame (fr); |
c906108c | 4737 | } |
c5aa993b | 4738 | |
c906108c SS |
4739 | if (within_current_scope) |
4740 | { | |
4a64f543 MS |
4741 | /* We use value_{,free_to_}mark because it could be a *long* |
4742 | time before we return to the command level and call | |
4743 | free_all_values. We can't call free_all_values because we | |
4744 | might be in the middle of evaluating a function call. */ | |
c906108c | 4745 | |
0cf6dd15 | 4746 | int pc = 0; |
9c06b0b4 | 4747 | struct value *mark; |
fa4727a6 DJ |
4748 | struct value *new_val; |
4749 | ||
3a5c3e22 | 4750 | if (is_masked_watchpoint (&b->base)) |
9c06b0b4 TJB |
4751 | /* Since we don't know the exact trigger address (from |
4752 | stopped_data_address), just tell the user we've triggered | |
4753 | a mask watchpoint. */ | |
4754 | return WP_VALUE_CHANGED; | |
4755 | ||
4756 | mark = value_mark (); | |
0cf6dd15 | 4757 | fetch_subexp_value (b->exp, &pc, &new_val, NULL, NULL); |
218d2fc6 | 4758 | |
4a64f543 MS |
4759 | /* We use value_equal_contents instead of value_equal because |
4760 | the latter coerces an array to a pointer, thus comparing just | |
4761 | the address of the array instead of its contents. This is | |
4762 | not what we want. */ | |
fa4727a6 | 4763 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 4764 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 4765 | { |
fa4727a6 DJ |
4766 | if (new_val != NULL) |
4767 | { | |
4768 | release_value (new_val); | |
4769 | value_free_to_mark (mark); | |
4770 | } | |
c906108c SS |
4771 | bs->old_val = b->val; |
4772 | b->val = new_val; | |
fa4727a6 | 4773 | b->val_valid = 1; |
c906108c SS |
4774 | return WP_VALUE_CHANGED; |
4775 | } | |
4776 | else | |
4777 | { | |
60e1c644 | 4778 | /* Nothing changed. */ |
c906108c | 4779 | value_free_to_mark (mark); |
c906108c SS |
4780 | return WP_VALUE_NOT_CHANGED; |
4781 | } | |
4782 | } | |
4783 | else | |
4784 | { | |
79a45e25 PA |
4785 | struct ui_out *uiout = current_uiout; |
4786 | ||
c906108c | 4787 | /* This seems like the only logical thing to do because |
c5aa993b JM |
4788 | if we temporarily ignored the watchpoint, then when |
4789 | we reenter the block in which it is valid it contains | |
4790 | garbage (in the case of a function, it may have two | |
4791 | garbage values, one before and one after the prologue). | |
4792 | So we can't even detect the first assignment to it and | |
4793 | watch after that (since the garbage may or may not equal | |
4794 | the first value assigned). */ | |
348d480f PA |
4795 | /* We print all the stop information in |
4796 | breakpoint_ops->print_it, but in this case, by the time we | |
4797 | call breakpoint_ops->print_it this bp will be deleted | |
4798 | already. So we have no choice but print the information | |
4799 | here. */ | |
9dc5e2a9 | 4800 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
4801 | ui_out_field_string |
4802 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 4803 | ui_out_text (uiout, "\nWatchpoint "); |
3a5c3e22 | 4804 | ui_out_field_int (uiout, "wpnum", b->base.number); |
3e43a32a MS |
4805 | ui_out_text (uiout, |
4806 | " deleted because the program has left the block in\n\ | |
8b93c638 | 4807 | which its expression is valid.\n"); |
4ce44c66 | 4808 | |
cdac0397 | 4809 | /* Make sure the watchpoint's commands aren't executed. */ |
3a5c3e22 | 4810 | decref_counted_command_line (&b->base.commands); |
d0fb5eae | 4811 | watchpoint_del_at_next_stop (b); |
c906108c SS |
4812 | |
4813 | return WP_DELETED; | |
4814 | } | |
4815 | } | |
4816 | ||
18a18393 | 4817 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
4818 | breakpoint location BL. This function does not check if we should |
4819 | stop, only if BL explains the stop. */ | |
4820 | ||
18a18393 | 4821 | static int |
6c95b8df | 4822 | bpstat_check_location (const struct bp_location *bl, |
09ac7c10 TT |
4823 | struct address_space *aspace, CORE_ADDR bp_addr, |
4824 | const struct target_waitstatus *ws) | |
18a18393 VP |
4825 | { |
4826 | struct breakpoint *b = bl->owner; | |
4827 | ||
348d480f | 4828 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
4829 | gdb_assert (b != NULL); |
4830 | ||
09ac7c10 | 4831 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
4832 | } |
4833 | ||
3a5c3e22 PA |
4834 | /* Determine if the watched values have actually changed, and we |
4835 | should stop. If not, set BS->stop to 0. */ | |
4836 | ||
18a18393 VP |
4837 | static void |
4838 | bpstat_check_watchpoint (bpstat bs) | |
4839 | { | |
2bdf28a0 | 4840 | const struct bp_location *bl; |
3a5c3e22 | 4841 | struct watchpoint *b; |
2bdf28a0 JK |
4842 | |
4843 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 4844 | bl = bs->bp_location_at; |
2bdf28a0 | 4845 | gdb_assert (bl != NULL); |
3a5c3e22 | 4846 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 4847 | gdb_assert (b != NULL); |
18a18393 | 4848 | |
18a18393 | 4849 | { |
18a18393 VP |
4850 | int must_check_value = 0; |
4851 | ||
3a5c3e22 | 4852 | if (b->base.type == bp_watchpoint) |
18a18393 VP |
4853 | /* For a software watchpoint, we must always check the |
4854 | watched value. */ | |
4855 | must_check_value = 1; | |
4856 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
4857 | /* We have a hardware watchpoint (read, write, or access) | |
4858 | and the target earlier reported an address watched by | |
4859 | this watchpoint. */ | |
4860 | must_check_value = 1; | |
4861 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
3a5c3e22 | 4862 | && b->base.type == bp_hardware_watchpoint) |
18a18393 VP |
4863 | /* We were stopped by a hardware watchpoint, but the target could |
4864 | not report the data address. We must check the watchpoint's | |
4865 | value. Access and read watchpoints are out of luck; without | |
4866 | a data address, we can't figure it out. */ | |
4867 | must_check_value = 1; | |
3a5c3e22 | 4868 | |
18a18393 VP |
4869 | if (must_check_value) |
4870 | { | |
3e43a32a MS |
4871 | char *message |
4872 | = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
3a5c3e22 | 4873 | b->base.number); |
18a18393 VP |
4874 | struct cleanup *cleanups = make_cleanup (xfree, message); |
4875 | int e = catch_errors (watchpoint_check, bs, message, | |
4876 | RETURN_MASK_ALL); | |
4877 | do_cleanups (cleanups); | |
4878 | switch (e) | |
4879 | { | |
4880 | case WP_DELETED: | |
4881 | /* We've already printed what needs to be printed. */ | |
4882 | bs->print_it = print_it_done; | |
4883 | /* Stop. */ | |
4884 | break; | |
60e1c644 PA |
4885 | case WP_IGNORE: |
4886 | bs->print_it = print_it_noop; | |
4887 | bs->stop = 0; | |
4888 | break; | |
18a18393 | 4889 | case WP_VALUE_CHANGED: |
3a5c3e22 | 4890 | if (b->base.type == bp_read_watchpoint) |
18a18393 | 4891 | { |
85d721b8 PA |
4892 | /* There are two cases to consider here: |
4893 | ||
4a64f543 | 4894 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
4895 | In that case, trust the target, and always report |
4896 | the watchpoint hit to the user. Even though | |
4897 | reads don't cause value changes, the value may | |
4898 | have changed since the last time it was read, and | |
4899 | since we're not trapping writes, we will not see | |
4900 | those, and as such we should ignore our notion of | |
4901 | old value. | |
4902 | ||
4a64f543 | 4903 | 2. We're watching the triggered memory for both |
85d721b8 PA |
4904 | reads and writes. There are two ways this may |
4905 | happen: | |
4906 | ||
4a64f543 | 4907 | 2.1. This is a target that can't break on data |
85d721b8 PA |
4908 | reads only, but can break on accesses (reads or |
4909 | writes), such as e.g., x86. We detect this case | |
4910 | at the time we try to insert read watchpoints. | |
4911 | ||
4a64f543 | 4912 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
4913 | watchpoints, but, the user set an access or write |
4914 | watchpoint watching the same memory as this read | |
4915 | watchpoint. | |
4916 | ||
4917 | If we're watching memory writes as well as reads, | |
4918 | ignore watchpoint hits when we find that the | |
4919 | value hasn't changed, as reads don't cause | |
4920 | changes. This still gives false positives when | |
4921 | the program writes the same value to memory as | |
4922 | what there was already in memory (we will confuse | |
4923 | it for a read), but it's much better than | |
4924 | nothing. */ | |
4925 | ||
4926 | int other_write_watchpoint = 0; | |
4927 | ||
4928 | if (bl->watchpoint_type == hw_read) | |
4929 | { | |
4930 | struct breakpoint *other_b; | |
4931 | ||
4932 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
4933 | if (other_b->type == bp_hardware_watchpoint |
4934 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 4935 | { |
3a5c3e22 PA |
4936 | struct watchpoint *other_w = |
4937 | (struct watchpoint *) other_b; | |
4938 | ||
4939 | if (other_w->watchpoint_triggered | |
4940 | == watch_triggered_yes) | |
4941 | { | |
4942 | other_write_watchpoint = 1; | |
4943 | break; | |
4944 | } | |
85d721b8 PA |
4945 | } |
4946 | } | |
4947 | ||
4948 | if (other_write_watchpoint | |
4949 | || bl->watchpoint_type == hw_access) | |
4950 | { | |
4951 | /* We're watching the same memory for writes, | |
4952 | and the value changed since the last time we | |
4953 | updated it, so this trap must be for a write. | |
4954 | Ignore it. */ | |
4955 | bs->print_it = print_it_noop; | |
4956 | bs->stop = 0; | |
4957 | } | |
18a18393 VP |
4958 | } |
4959 | break; | |
4960 | case WP_VALUE_NOT_CHANGED: | |
3a5c3e22 PA |
4961 | if (b->base.type == bp_hardware_watchpoint |
4962 | || b->base.type == bp_watchpoint) | |
18a18393 VP |
4963 | { |
4964 | /* Don't stop: write watchpoints shouldn't fire if | |
4965 | the value hasn't changed. */ | |
4966 | bs->print_it = print_it_noop; | |
4967 | bs->stop = 0; | |
4968 | } | |
4969 | /* Stop. */ | |
4970 | break; | |
4971 | default: | |
4972 | /* Can't happen. */ | |
4973 | case 0: | |
4974 | /* Error from catch_errors. */ | |
3a5c3e22 | 4975 | printf_filtered (_("Watchpoint %d deleted.\n"), b->base.number); |
d0fb5eae | 4976 | watchpoint_del_at_next_stop (b); |
18a18393 VP |
4977 | /* We've already printed what needs to be printed. */ |
4978 | bs->print_it = print_it_done; | |
4979 | break; | |
4980 | } | |
4981 | } | |
4982 | else /* must_check_value == 0 */ | |
4983 | { | |
4984 | /* This is a case where some watchpoint(s) triggered, but | |
4985 | not at the address of this watchpoint, or else no | |
4986 | watchpoint triggered after all. So don't print | |
4987 | anything for this watchpoint. */ | |
4988 | bs->print_it = print_it_noop; | |
4989 | bs->stop = 0; | |
4990 | } | |
4991 | } | |
4992 | } | |
4993 | ||
4994 | ||
4995 | /* Check conditions (condition proper, frame, thread and ignore count) | |
4996 | of breakpoint referred to by BS. If we should not stop for this | |
4997 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 4998 | |
18a18393 VP |
4999 | static void |
5000 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
5001 | { | |
5002 | int thread_id = pid_to_thread_id (ptid); | |
2bdf28a0 JK |
5003 | const struct bp_location *bl; |
5004 | struct breakpoint *b; | |
5005 | ||
5006 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5007 | bl = bs->bp_location_at; |
2bdf28a0 | 5008 | gdb_assert (bl != NULL); |
f431efe5 | 5009 | b = bs->breakpoint_at; |
2bdf28a0 | 5010 | gdb_assert (b != NULL); |
18a18393 | 5011 | |
b775012e LM |
5012 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5013 | need to do so again since GDB does not know if we stopped due to a | |
5014 | breakpoint or a single step breakpoint. */ | |
5015 | ||
18a18393 | 5016 | if (frame_id_p (b->frame_id) |
edb3359d | 5017 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 VP |
5018 | bs->stop = 0; |
5019 | else if (bs->stop) | |
5020 | { | |
5021 | int value_is_zero = 0; | |
60e1c644 PA |
5022 | struct expression *cond; |
5023 | ||
7371cf6d PM |
5024 | /* Evaluate Python breakpoints that have a "stop" |
5025 | method implemented. */ | |
5026 | if (b->py_bp_object) | |
5027 | bs->stop = gdbpy_should_stop (b->py_bp_object); | |
5028 | ||
60e1c644 | 5029 | if (is_watchpoint (b)) |
3a5c3e22 PA |
5030 | { |
5031 | struct watchpoint *w = (struct watchpoint *) b; | |
5032 | ||
5033 | cond = w->cond_exp; | |
5034 | } | |
60e1c644 PA |
5035 | else |
5036 | cond = bl->cond; | |
5037 | ||
f431efe5 | 5038 | if (cond && b->disposition != disp_del_at_next_stop) |
18a18393 | 5039 | { |
60e1c644 | 5040 | int within_current_scope = 1; |
3a5c3e22 | 5041 | struct watchpoint * w; |
60e1c644 | 5042 | |
c5bc3a77 DJ |
5043 | /* We use value_mark and value_free_to_mark because it could |
5044 | be a long time before we return to the command level and | |
5045 | call free_all_values. We can't call free_all_values | |
5046 | because we might be in the middle of evaluating a | |
5047 | function call. */ | |
5048 | struct value *mark = value_mark (); | |
5049 | ||
3a5c3e22 PA |
5050 | if (is_watchpoint (b)) |
5051 | w = (struct watchpoint *) b; | |
5052 | else | |
5053 | w = NULL; | |
5054 | ||
edb3359d DJ |
5055 | /* Need to select the frame, with all that implies so that |
5056 | the conditions will have the right context. Because we | |
5057 | use the frame, we will not see an inlined function's | |
5058 | variables when we arrive at a breakpoint at the start | |
5059 | of the inlined function; the current frame will be the | |
5060 | call site. */ | |
3a5c3e22 | 5061 | if (w == NULL || w->cond_exp_valid_block == NULL) |
60e1c644 PA |
5062 | select_frame (get_current_frame ()); |
5063 | else | |
5064 | { | |
5065 | struct frame_info *frame; | |
5066 | ||
5067 | /* For local watchpoint expressions, which particular | |
5068 | instance of a local is being watched matters, so we | |
5069 | keep track of the frame to evaluate the expression | |
5070 | in. To evaluate the condition however, it doesn't | |
5071 | really matter which instantiation of the function | |
5072 | where the condition makes sense triggers the | |
5073 | watchpoint. This allows an expression like "watch | |
5074 | global if q > 10" set in `func', catch writes to | |
5075 | global on all threads that call `func', or catch | |
5076 | writes on all recursive calls of `func' by a single | |
5077 | thread. We simply always evaluate the condition in | |
5078 | the innermost frame that's executing where it makes | |
5079 | sense to evaluate the condition. It seems | |
5080 | intuitive. */ | |
3a5c3e22 | 5081 | frame = block_innermost_frame (w->cond_exp_valid_block); |
60e1c644 PA |
5082 | if (frame != NULL) |
5083 | select_frame (frame); | |
5084 | else | |
5085 | within_current_scope = 0; | |
5086 | } | |
5087 | if (within_current_scope) | |
5088 | value_is_zero | |
5089 | = catch_errors (breakpoint_cond_eval, cond, | |
5090 | "Error in testing breakpoint condition:\n", | |
5091 | RETURN_MASK_ALL); | |
5092 | else | |
5093 | { | |
5094 | warning (_("Watchpoint condition cannot be tested " | |
5095 | "in the current scope")); | |
5096 | /* If we failed to set the right context for this | |
5097 | watchpoint, unconditionally report it. */ | |
5098 | value_is_zero = 0; | |
5099 | } | |
4a64f543 | 5100 | /* FIXME-someday, should give breakpoint #. */ |
c5bc3a77 | 5101 | value_free_to_mark (mark); |
18a18393 | 5102 | } |
60e1c644 PA |
5103 | |
5104 | if (cond && value_is_zero) | |
18a18393 VP |
5105 | { |
5106 | bs->stop = 0; | |
5107 | } | |
5108 | else if (b->thread != -1 && b->thread != thread_id) | |
5109 | { | |
5110 | bs->stop = 0; | |
5111 | } | |
5112 | else if (b->ignore_count > 0) | |
5113 | { | |
5114 | b->ignore_count--; | |
5115 | annotate_ignore_count_change (); | |
5116 | bs->stop = 0; | |
4a64f543 | 5117 | /* Increase the hit count even though we don't stop. */ |
18a18393 | 5118 | ++(b->hit_count); |
8d3788bd | 5119 | observer_notify_breakpoint_modified (b); |
18a18393 VP |
5120 | } |
5121 | } | |
5122 | } | |
5123 | ||
5124 | ||
9709f61c | 5125 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 5126 | BP_ADDR in thread PTID. |
c906108c | 5127 | |
d983da9c | 5128 | Determine whether we stopped at a breakpoint, etc, or whether we |
4a64f543 MS |
5129 | don't understand this stop. Result is a chain of bpstat's such |
5130 | that: | |
c906108c | 5131 | |
c5aa993b | 5132 | if we don't understand the stop, the result is a null pointer. |
c906108c | 5133 | |
c5aa993b | 5134 | if we understand why we stopped, the result is not null. |
c906108c | 5135 | |
c5aa993b JM |
5136 | Each element of the chain refers to a particular breakpoint or |
5137 | watchpoint at which we have stopped. (We may have stopped for | |
5138 | several reasons concurrently.) | |
c906108c | 5139 | |
c5aa993b JM |
5140 | Each element of the chain has valid next, breakpoint_at, |
5141 | commands, FIXME??? fields. */ | |
c906108c SS |
5142 | |
5143 | bpstat | |
6c95b8df | 5144 | bpstat_stop_status (struct address_space *aspace, |
09ac7c10 TT |
5145 | CORE_ADDR bp_addr, ptid_t ptid, |
5146 | const struct target_waitstatus *ws) | |
c906108c | 5147 | { |
0d381245 | 5148 | struct breakpoint *b = NULL; |
afe38095 | 5149 | struct bp_location *bl; |
20874c92 | 5150 | struct bp_location *loc; |
5760d0ab JK |
5151 | /* First item of allocated bpstat's. */ |
5152 | bpstat bs_head = NULL, *bs_link = &bs_head; | |
c906108c | 5153 | /* Pointer to the last thing in the chain currently. */ |
5760d0ab | 5154 | bpstat bs; |
20874c92 | 5155 | int ix; |
429374b8 | 5156 | int need_remove_insert; |
f431efe5 | 5157 | int removed_any; |
c906108c | 5158 | |
f431efe5 PA |
5159 | /* First, build the bpstat chain with locations that explain a |
5160 | target stop, while being careful to not set the target running, | |
5161 | as that may invalidate locations (in particular watchpoint | |
5162 | locations are recreated). Resuming will happen here with | |
5163 | breakpoint conditions or watchpoint expressions that include | |
5164 | inferior function calls. */ | |
c5aa993b | 5165 | |
429374b8 JK |
5166 | ALL_BREAKPOINTS (b) |
5167 | { | |
5168 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) | |
5169 | continue; | |
a5606eee | 5170 | |
429374b8 JK |
5171 | for (bl = b->loc; bl != NULL; bl = bl->next) |
5172 | { | |
4a64f543 MS |
5173 | /* For hardware watchpoints, we look only at the first |
5174 | location. The watchpoint_check function will work on the | |
5175 | entire expression, not the individual locations. For | |
5176 | read watchpoints, the watchpoints_triggered function has | |
5177 | checked all locations already. */ | |
429374b8 JK |
5178 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5179 | break; | |
18a18393 | 5180 | |
f6592439 | 5181 | if (!bl->enabled || bl->shlib_disabled) |
429374b8 | 5182 | continue; |
c5aa993b | 5183 | |
09ac7c10 | 5184 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5185 | continue; |
c5aa993b | 5186 | |
4a64f543 MS |
5187 | /* Come here if it's a watchpoint, or if the break address |
5188 | matches. */ | |
c5aa993b | 5189 | |
4a64f543 MS |
5190 | bs = bpstat_alloc (bl, &bs_link); /* Alloc a bpstat to |
5191 | explain stop. */ | |
c5aa993b | 5192 | |
f431efe5 PA |
5193 | /* Assume we stop. Should we find a watchpoint that is not |
5194 | actually triggered, or if the condition of the breakpoint | |
5195 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5196 | bs->stop = 1; |
5197 | bs->print = 1; | |
d983da9c | 5198 | |
f431efe5 PA |
5199 | /* If this is a scope breakpoint, mark the associated |
5200 | watchpoint as triggered so that we will handle the | |
5201 | out-of-scope event. We'll get to the watchpoint next | |
5202 | iteration. */ | |
d0fb5eae | 5203 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5204 | { |
5205 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5206 | ||
5207 | w->watchpoint_triggered = watch_triggered_yes; | |
5208 | } | |
f431efe5 PA |
5209 | } |
5210 | } | |
5211 | ||
5212 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
5213 | { | |
f1310107 | 5214 | if (breakpoint_location_address_match (loc, aspace, bp_addr)) |
f431efe5 | 5215 | { |
5760d0ab | 5216 | bs = bpstat_alloc (loc, &bs_link); |
f431efe5 PA |
5217 | /* For hits of moribund locations, we should just proceed. */ |
5218 | bs->stop = 0; | |
5219 | bs->print = 0; | |
5220 | bs->print_it = print_it_noop; | |
5221 | } | |
5222 | } | |
5223 | ||
edcc5120 TT |
5224 | /* A bit of special processing for shlib breakpoints. We need to |
5225 | process solib loading here, so that the lists of loaded and | |
5226 | unloaded libraries are correct before we handle "catch load" and | |
5227 | "catch unload". */ | |
5228 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5229 | { | |
5d268276 | 5230 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5231 | { |
5232 | handle_solib_event (); | |
5233 | break; | |
5234 | } | |
5235 | } | |
5236 | ||
f431efe5 PA |
5237 | /* Now go through the locations that caused the target to stop, and |
5238 | check whether we're interested in reporting this stop to higher | |
5239 | layers, or whether we should resume the target transparently. */ | |
5240 | ||
5241 | removed_any = 0; | |
5242 | ||
5760d0ab | 5243 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5244 | { |
5245 | if (!bs->stop) | |
5246 | continue; | |
5247 | ||
f431efe5 | 5248 | b = bs->breakpoint_at; |
348d480f PA |
5249 | b->ops->check_status (bs); |
5250 | if (bs->stop) | |
28010a5d | 5251 | { |
348d480f | 5252 | bpstat_check_breakpoint_conditions (bs, ptid); |
f431efe5 | 5253 | |
429374b8 JK |
5254 | if (bs->stop) |
5255 | { | |
5256 | ++(b->hit_count); | |
8d3788bd | 5257 | observer_notify_breakpoint_modified (b); |
c906108c | 5258 | |
4a64f543 | 5259 | /* We will stop here. */ |
429374b8 JK |
5260 | if (b->disposition == disp_disable) |
5261 | { | |
816338b5 SS |
5262 | --(b->enable_count); |
5263 | if (b->enable_count <= 0 | |
5264 | && b->enable_state != bp_permanent) | |
429374b8 | 5265 | b->enable_state = bp_disabled; |
f431efe5 | 5266 | removed_any = 1; |
429374b8 JK |
5267 | } |
5268 | if (b->silent) | |
5269 | bs->print = 0; | |
5270 | bs->commands = b->commands; | |
9add0f1b | 5271 | incref_counted_command_line (bs->commands); |
abf85f46 JK |
5272 | if (command_line_is_silent (bs->commands |
5273 | ? bs->commands->commands : NULL)) | |
5274 | bs->print = 0; | |
429374b8 JK |
5275 | } |
5276 | ||
348d480f | 5277 | } |
a9b3a50f PA |
5278 | |
5279 | /* Print nothing for this entry if we don't stop or don't | |
5280 | print. */ | |
5281 | if (!bs->stop || !bs->print) | |
5282 | bs->print_it = print_it_noop; | |
429374b8 | 5283 | } |
876fa593 | 5284 | |
d983da9c DJ |
5285 | /* If we aren't stopping, the value of some hardware watchpoint may |
5286 | not have changed, but the intermediate memory locations we are | |
5287 | watching may have. Don't bother if we're stopping; this will get | |
5288 | done later. */ | |
d832cb68 | 5289 | need_remove_insert = 0; |
5760d0ab JK |
5290 | if (! bpstat_causes_stop (bs_head)) |
5291 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5292 | if (!bs->stop |
f431efe5 PA |
5293 | && bs->breakpoint_at |
5294 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5295 | { |
3a5c3e22 PA |
5296 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5297 | ||
5298 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5299 | need_remove_insert = 1; |
d983da9c DJ |
5300 | } |
5301 | ||
d832cb68 | 5302 | if (need_remove_insert) |
2d134ed3 | 5303 | update_global_location_list (1); |
f431efe5 PA |
5304 | else if (removed_any) |
5305 | update_global_location_list (0); | |
d832cb68 | 5306 | |
5760d0ab | 5307 | return bs_head; |
c906108c | 5308 | } |
628fe4e4 JK |
5309 | |
5310 | static void | |
5311 | handle_jit_event (void) | |
5312 | { | |
5313 | struct frame_info *frame; | |
5314 | struct gdbarch *gdbarch; | |
5315 | ||
5316 | /* Switch terminal for any messages produced by | |
5317 | breakpoint_re_set. */ | |
5318 | target_terminal_ours_for_output (); | |
5319 | ||
5320 | frame = get_current_frame (); | |
5321 | gdbarch = get_frame_arch (frame); | |
5322 | ||
5323 | jit_event_handler (gdbarch); | |
5324 | ||
5325 | target_terminal_inferior (); | |
5326 | } | |
5327 | ||
edcc5120 TT |
5328 | /* Handle an solib event by calling solib_add. */ |
5329 | ||
5330 | void | |
5331 | handle_solib_event (void) | |
5332 | { | |
5333 | clear_program_space_solib_cache (current_inferior ()->pspace); | |
5334 | ||
5335 | /* Check for any newly added shared libraries if we're supposed to | |
5336 | be adding them automatically. Switch terminal for any messages | |
5337 | produced by breakpoint_re_set. */ | |
5338 | target_terminal_ours_for_output (); | |
5339 | #ifdef SOLIB_ADD | |
5340 | SOLIB_ADD (NULL, 0, ¤t_target, auto_solib_add); | |
5341 | #else | |
5342 | solib_add (NULL, 0, ¤t_target, auto_solib_add); | |
5343 | #endif | |
5344 | target_terminal_inferior (); | |
5345 | } | |
5346 | ||
628fe4e4 JK |
5347 | /* Prepare WHAT final decision for infrun. */ |
5348 | ||
5349 | /* Decide what infrun needs to do with this bpstat. */ | |
5350 | ||
c906108c | 5351 | struct bpstat_what |
0e30163f | 5352 | bpstat_what (bpstat bs_head) |
c906108c | 5353 | { |
c906108c | 5354 | struct bpstat_what retval; |
628fe4e4 | 5355 | int jit_event = 0; |
0e30163f | 5356 | bpstat bs; |
c906108c | 5357 | |
628fe4e4 | 5358 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5359 | retval.call_dummy = STOP_NONE; |
186c406b | 5360 | retval.is_longjmp = 0; |
628fe4e4 | 5361 | |
0e30163f | 5362 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5363 | { |
628fe4e4 JK |
5364 | /* Extract this BS's action. After processing each BS, we check |
5365 | if its action overrides all we've seem so far. */ | |
5366 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5367 | enum bptype bptype; | |
5368 | ||
c906108c | 5369 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5370 | { |
5371 | /* I suspect this can happen if it was a momentary | |
5372 | breakpoint which has since been deleted. */ | |
5373 | bptype = bp_none; | |
5374 | } | |
20874c92 | 5375 | else |
f431efe5 | 5376 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5377 | |
5378 | switch (bptype) | |
c906108c SS |
5379 | { |
5380 | case bp_none: | |
628fe4e4 | 5381 | break; |
c906108c SS |
5382 | case bp_breakpoint: |
5383 | case bp_hardware_breakpoint: | |
5384 | case bp_until: | |
5385 | case bp_finish: | |
a9b3a50f | 5386 | case bp_shlib_event: |
c906108c SS |
5387 | if (bs->stop) |
5388 | { | |
5389 | if (bs->print) | |
628fe4e4 | 5390 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5391 | else |
628fe4e4 | 5392 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5393 | } |
5394 | else | |
628fe4e4 | 5395 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5396 | break; |
5397 | case bp_watchpoint: | |
5398 | case bp_hardware_watchpoint: | |
5399 | case bp_read_watchpoint: | |
5400 | case bp_access_watchpoint: | |
5401 | if (bs->stop) | |
5402 | { | |
5403 | if (bs->print) | |
628fe4e4 | 5404 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5405 | else |
628fe4e4 | 5406 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5407 | } |
5408 | else | |
628fe4e4 JK |
5409 | { |
5410 | /* There was a watchpoint, but we're not stopping. | |
5411 | This requires no further action. */ | |
5412 | } | |
c906108c SS |
5413 | break; |
5414 | case bp_longjmp: | |
e2e4d78b | 5415 | case bp_longjmp_call_dummy: |
186c406b | 5416 | case bp_exception: |
628fe4e4 | 5417 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; |
e2e4d78b | 5418 | retval.is_longjmp = bptype != bp_exception; |
c906108c SS |
5419 | break; |
5420 | case bp_longjmp_resume: | |
186c406b | 5421 | case bp_exception_resume: |
628fe4e4 | 5422 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; |
186c406b | 5423 | retval.is_longjmp = bptype == bp_longjmp_resume; |
c906108c SS |
5424 | break; |
5425 | case bp_step_resume: | |
5426 | if (bs->stop) | |
628fe4e4 JK |
5427 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5428 | else | |
c906108c | 5429 | { |
628fe4e4 JK |
5430 | /* It is for the wrong frame. */ |
5431 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5432 | } |
c906108c | 5433 | break; |
2c03e5be PA |
5434 | case bp_hp_step_resume: |
5435 | if (bs->stop) | |
5436 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5437 | else | |
5438 | { | |
5439 | /* It is for the wrong frame. */ | |
5440 | this_action = BPSTAT_WHAT_SINGLE; | |
5441 | } | |
5442 | break; | |
c906108c | 5443 | case bp_watchpoint_scope: |
c4093a6a | 5444 | case bp_thread_event: |
1900040c | 5445 | case bp_overlay_event: |
0fd8e87f | 5446 | case bp_longjmp_master: |
aa7d318d | 5447 | case bp_std_terminate_master: |
186c406b | 5448 | case bp_exception_master: |
628fe4e4 | 5449 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5450 | break; |
ce78b96d | 5451 | case bp_catchpoint: |
c5aa993b JM |
5452 | if (bs->stop) |
5453 | { | |
5454 | if (bs->print) | |
628fe4e4 | 5455 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5456 | else |
628fe4e4 | 5457 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5458 | } |
5459 | else | |
628fe4e4 JK |
5460 | { |
5461 | /* There was a catchpoint, but we're not stopping. | |
5462 | This requires no further action. */ | |
5463 | } | |
5464 | break; | |
628fe4e4 JK |
5465 | case bp_jit_event: |
5466 | jit_event = 1; | |
5467 | this_action = BPSTAT_WHAT_SINGLE; | |
c5aa993b | 5468 | break; |
c906108c | 5469 | case bp_call_dummy: |
53a5351d JM |
5470 | /* Make sure the action is stop (silent or noisy), |
5471 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5472 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5473 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5474 | break; |
5475 | case bp_std_terminate: | |
5476 | /* Make sure the action is stop (silent or noisy), | |
5477 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5478 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5479 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5480 | break; |
1042e4c0 | 5481 | case bp_tracepoint: |
7a697b8d | 5482 | case bp_fast_tracepoint: |
0fb4aa4b | 5483 | case bp_static_tracepoint: |
1042e4c0 SS |
5484 | /* Tracepoint hits should not be reported back to GDB, and |
5485 | if one got through somehow, it should have been filtered | |
5486 | out already. */ | |
5487 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5488 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5489 | break; |
5490 | case bp_gnu_ifunc_resolver: | |
5491 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5492 | this_action = BPSTAT_WHAT_SINGLE; | |
5493 | break; | |
5494 | case bp_gnu_ifunc_resolver_return: | |
5495 | /* The breakpoint will be removed, execution will restart from the | |
5496 | PC of the former breakpoint. */ | |
5497 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5498 | break; | |
e7e0cddf SS |
5499 | |
5500 | case bp_dprintf: | |
5501 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5502 | break; | |
5503 | ||
628fe4e4 JK |
5504 | default: |
5505 | internal_error (__FILE__, __LINE__, | |
5506 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5507 | } |
628fe4e4 JK |
5508 | |
5509 | retval.main_action = max (retval.main_action, this_action); | |
c906108c | 5510 | } |
628fe4e4 | 5511 | |
0e30163f JK |
5512 | /* These operations may affect the bs->breakpoint_at state so they are |
5513 | delayed after MAIN_ACTION is decided above. */ | |
5514 | ||
628fe4e4 JK |
5515 | if (jit_event) |
5516 | { | |
5517 | if (debug_infrun) | |
5518 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_jit_event\n"); | |
5519 | ||
5520 | handle_jit_event (); | |
5521 | } | |
5522 | ||
0e30163f JK |
5523 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5524 | { | |
5525 | struct breakpoint *b = bs->breakpoint_at; | |
5526 | ||
5527 | if (b == NULL) | |
5528 | continue; | |
5529 | switch (b->type) | |
5530 | { | |
5531 | case bp_gnu_ifunc_resolver: | |
5532 | gnu_ifunc_resolver_stop (b); | |
5533 | break; | |
5534 | case bp_gnu_ifunc_resolver_return: | |
5535 | gnu_ifunc_resolver_return_stop (b); | |
5536 | break; | |
5537 | } | |
5538 | } | |
5539 | ||
c906108c SS |
5540 | return retval; |
5541 | } | |
5542 | ||
5543 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
5544 | without hardware support). This isn't related to a specific bpstat, | |
5545 | just to things like whether watchpoints are set. */ | |
5546 | ||
c5aa993b | 5547 | int |
fba45db2 | 5548 | bpstat_should_step (void) |
c906108c SS |
5549 | { |
5550 | struct breakpoint *b; | |
cc59ec59 | 5551 | |
c906108c | 5552 | ALL_BREAKPOINTS (b) |
717a8278 | 5553 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 5554 | return 1; |
c906108c SS |
5555 | return 0; |
5556 | } | |
5557 | ||
67822962 PA |
5558 | int |
5559 | bpstat_causes_stop (bpstat bs) | |
5560 | { | |
5561 | for (; bs != NULL; bs = bs->next) | |
5562 | if (bs->stop) | |
5563 | return 1; | |
5564 | ||
5565 | return 0; | |
5566 | } | |
5567 | ||
c906108c | 5568 | \f |
c5aa993b | 5569 | |
170b53b2 UW |
5570 | /* Compute a string of spaces suitable to indent the next line |
5571 | so it starts at the position corresponding to the table column | |
5572 | named COL_NAME in the currently active table of UIOUT. */ | |
5573 | ||
5574 | static char * | |
5575 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5576 | { | |
5577 | static char wrap_indent[80]; | |
5578 | int i, total_width, width, align; | |
5579 | char *text; | |
5580 | ||
5581 | total_width = 0; | |
5582 | for (i = 1; ui_out_query_field (uiout, i, &width, &align, &text); i++) | |
5583 | { | |
5584 | if (strcmp (text, col_name) == 0) | |
5585 | { | |
5586 | gdb_assert (total_width < sizeof wrap_indent); | |
5587 | memset (wrap_indent, ' ', total_width); | |
5588 | wrap_indent[total_width] = 0; | |
5589 | ||
5590 | return wrap_indent; | |
5591 | } | |
5592 | ||
5593 | total_width += width + 1; | |
5594 | } | |
5595 | ||
5596 | return NULL; | |
5597 | } | |
5598 | ||
b775012e LM |
5599 | /* Determine if the locations of this breakpoint will have their conditions |
5600 | evaluated by the target, host or a mix of both. Returns the following: | |
5601 | ||
5602 | "host": Host evals condition. | |
5603 | "host or target": Host or Target evals condition. | |
5604 | "target": Target evals condition. | |
5605 | */ | |
5606 | ||
5607 | static const char * | |
5608 | bp_condition_evaluator (struct breakpoint *b) | |
5609 | { | |
5610 | struct bp_location *bl; | |
5611 | char host_evals = 0; | |
5612 | char target_evals = 0; | |
5613 | ||
5614 | if (!b) | |
5615 | return NULL; | |
5616 | ||
5617 | if (!is_breakpoint (b)) | |
5618 | return NULL; | |
5619 | ||
5620 | if (gdb_evaluates_breakpoint_condition_p () | |
5621 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5622 | return condition_evaluation_host; | |
5623 | ||
5624 | for (bl = b->loc; bl; bl = bl->next) | |
5625 | { | |
5626 | if (bl->cond_bytecode) | |
5627 | target_evals++; | |
5628 | else | |
5629 | host_evals++; | |
5630 | } | |
5631 | ||
5632 | if (host_evals && target_evals) | |
5633 | return condition_evaluation_both; | |
5634 | else if (target_evals) | |
5635 | return condition_evaluation_target; | |
5636 | else | |
5637 | return condition_evaluation_host; | |
5638 | } | |
5639 | ||
5640 | /* Determine the breakpoint location's condition evaluator. This is | |
5641 | similar to bp_condition_evaluator, but for locations. */ | |
5642 | ||
5643 | static const char * | |
5644 | bp_location_condition_evaluator (struct bp_location *bl) | |
5645 | { | |
5646 | if (bl && !is_breakpoint (bl->owner)) | |
5647 | return NULL; | |
5648 | ||
5649 | if (gdb_evaluates_breakpoint_condition_p () | |
5650 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5651 | return condition_evaluation_host; | |
5652 | ||
5653 | if (bl && bl->cond_bytecode) | |
5654 | return condition_evaluation_target; | |
5655 | else | |
5656 | return condition_evaluation_host; | |
5657 | } | |
5658 | ||
859825b8 JK |
5659 | /* Print the LOC location out of the list of B->LOC locations. */ |
5660 | ||
170b53b2 UW |
5661 | static void |
5662 | print_breakpoint_location (struct breakpoint *b, | |
5663 | struct bp_location *loc) | |
0d381245 | 5664 | { |
79a45e25 | 5665 | struct ui_out *uiout = current_uiout; |
6c95b8df PA |
5666 | struct cleanup *old_chain = save_current_program_space (); |
5667 | ||
859825b8 JK |
5668 | if (loc != NULL && loc->shlib_disabled) |
5669 | loc = NULL; | |
5670 | ||
6c95b8df PA |
5671 | if (loc != NULL) |
5672 | set_current_program_space (loc->pspace); | |
5673 | ||
56435ebe TT |
5674 | if (b->display_canonical) |
5675 | ui_out_field_string (uiout, "what", b->addr_string); | |
f8eba3c6 | 5676 | else if (loc && loc->source_file) |
0d381245 VP |
5677 | { |
5678 | struct symbol *sym | |
5679 | = find_pc_sect_function (loc->address, loc->section); | |
5680 | if (sym) | |
5681 | { | |
5682 | ui_out_text (uiout, "in "); | |
5683 | ui_out_field_string (uiout, "func", | |
5684 | SYMBOL_PRINT_NAME (sym)); | |
170b53b2 UW |
5685 | ui_out_text (uiout, " "); |
5686 | ui_out_wrap_hint (uiout, wrap_indent_at_field (uiout, "what")); | |
5687 | ui_out_text (uiout, "at "); | |
0d381245 | 5688 | } |
f8eba3c6 | 5689 | ui_out_field_string (uiout, "file", loc->source_file); |
0d381245 VP |
5690 | ui_out_text (uiout, ":"); |
5691 | ||
5692 | if (ui_out_is_mi_like_p (uiout)) | |
5693 | { | |
5694 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
0b0865da | 5695 | const char *fullname = symtab_to_fullname (sal.symtab); |
0d381245 VP |
5696 | |
5697 | if (fullname) | |
5698 | ui_out_field_string (uiout, "fullname", fullname); | |
5699 | } | |
5700 | ||
f8eba3c6 | 5701 | ui_out_field_int (uiout, "line", loc->line_number); |
0d381245 | 5702 | } |
859825b8 | 5703 | else if (loc) |
0d381245 | 5704 | { |
f99d8bf4 PA |
5705 | struct ui_file *stb = mem_fileopen (); |
5706 | struct cleanup *stb_chain = make_cleanup_ui_file_delete (stb); | |
170b53b2 | 5707 | |
f99d8bf4 | 5708 | print_address_symbolic (loc->gdbarch, loc->address, stb, |
22e722e1 | 5709 | demangle, ""); |
0d381245 | 5710 | ui_out_field_stream (uiout, "at", stb); |
170b53b2 UW |
5711 | |
5712 | do_cleanups (stb_chain); | |
0d381245 | 5713 | } |
859825b8 JK |
5714 | else |
5715 | ui_out_field_string (uiout, "pending", b->addr_string); | |
6c95b8df | 5716 | |
b775012e LM |
5717 | if (loc && is_breakpoint (b) |
5718 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
5719 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
5720 | { | |
5721 | ui_out_text (uiout, " ("); | |
5722 | ui_out_field_string (uiout, "evaluated-by", | |
5723 | bp_location_condition_evaluator (loc)); | |
5724 | ui_out_text (uiout, ")"); | |
5725 | } | |
5726 | ||
6c95b8df | 5727 | do_cleanups (old_chain); |
0d381245 VP |
5728 | } |
5729 | ||
269b11a2 PA |
5730 | static const char * |
5731 | bptype_string (enum bptype type) | |
c906108c | 5732 | { |
c4093a6a JM |
5733 | struct ep_type_description |
5734 | { | |
5735 | enum bptype type; | |
5736 | char *description; | |
5737 | }; | |
5738 | static struct ep_type_description bptypes[] = | |
c906108c | 5739 | { |
c5aa993b JM |
5740 | {bp_none, "?deleted?"}, |
5741 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 5742 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
5743 | {bp_until, "until"}, |
5744 | {bp_finish, "finish"}, | |
5745 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 5746 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
5747 | {bp_read_watchpoint, "read watchpoint"}, |
5748 | {bp_access_watchpoint, "acc watchpoint"}, | |
5749 | {bp_longjmp, "longjmp"}, | |
5750 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 5751 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
5752 | {bp_exception, "exception"}, |
5753 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 5754 | {bp_step_resume, "step resume"}, |
2c03e5be | 5755 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
5756 | {bp_watchpoint_scope, "watchpoint scope"}, |
5757 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 5758 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 5759 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 5760 | {bp_thread_event, "thread events"}, |
1900040c | 5761 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 5762 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 5763 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 5764 | {bp_exception_master, "exception master"}, |
ce78b96d | 5765 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 5766 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 5767 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 5768 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 5769 | {bp_dprintf, "dprintf"}, |
4efc6507 | 5770 | {bp_jit_event, "jit events"}, |
0e30163f JK |
5771 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
5772 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 5773 | }; |
269b11a2 PA |
5774 | |
5775 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
5776 | || ((int) type != bptypes[(int) type].type)) | |
5777 | internal_error (__FILE__, __LINE__, | |
5778 | _("bptypes table does not describe type #%d."), | |
5779 | (int) type); | |
5780 | ||
5781 | return bptypes[(int) type].description; | |
5782 | } | |
5783 | ||
5784 | /* Print B to gdb_stdout. */ | |
5785 | ||
5786 | static void | |
5787 | print_one_breakpoint_location (struct breakpoint *b, | |
5788 | struct bp_location *loc, | |
5789 | int loc_number, | |
5790 | struct bp_location **last_loc, | |
269b11a2 PA |
5791 | int allflag) |
5792 | { | |
5793 | struct command_line *l; | |
c2c6d25f | 5794 | static char bpenables[] = "nynny"; |
c906108c | 5795 | |
79a45e25 | 5796 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
5797 | int header_of_multiple = 0; |
5798 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
5799 | struct value_print_options opts; |
5800 | ||
5801 | get_user_print_options (&opts); | |
0d381245 VP |
5802 | |
5803 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
5804 | /* See comment in print_one_breakpoint concerning treatment of |
5805 | breakpoints with single disabled location. */ | |
0d381245 VP |
5806 | if (loc == NULL |
5807 | && (b->loc != NULL | |
5808 | && (b->loc->next != NULL || !b->loc->enabled))) | |
5809 | header_of_multiple = 1; | |
5810 | if (loc == NULL) | |
5811 | loc = b->loc; | |
5812 | ||
c4093a6a JM |
5813 | annotate_record (); |
5814 | ||
5815 | /* 1 */ | |
5816 | annotate_field (0); | |
0d381245 VP |
5817 | if (part_of_multiple) |
5818 | { | |
5819 | char *formatted; | |
0c6773c1 | 5820 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
5821 | ui_out_field_string (uiout, "number", formatted); |
5822 | xfree (formatted); | |
5823 | } | |
5824 | else | |
5825 | { | |
5826 | ui_out_field_int (uiout, "number", b->number); | |
5827 | } | |
c4093a6a JM |
5828 | |
5829 | /* 2 */ | |
5830 | annotate_field (1); | |
0d381245 VP |
5831 | if (part_of_multiple) |
5832 | ui_out_field_skip (uiout, "type"); | |
269b11a2 PA |
5833 | else |
5834 | ui_out_field_string (uiout, "type", bptype_string (b->type)); | |
c4093a6a JM |
5835 | |
5836 | /* 3 */ | |
5837 | annotate_field (2); | |
0d381245 VP |
5838 | if (part_of_multiple) |
5839 | ui_out_field_skip (uiout, "disp"); | |
5840 | else | |
2cec12e5 | 5841 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 5842 | |
c4093a6a JM |
5843 | |
5844 | /* 4 */ | |
5845 | annotate_field (3); | |
0d381245 | 5846 | if (part_of_multiple) |
54e52265 | 5847 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 5848 | else |
4a64f543 MS |
5849 | ui_out_field_fmt (uiout, "enabled", "%c", |
5850 | bpenables[(int) b->enable_state]); | |
54e52265 | 5851 | ui_out_spaces (uiout, 2); |
0d381245 | 5852 | |
c4093a6a JM |
5853 | |
5854 | /* 5 and 6 */ | |
3086aeae | 5855 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 5856 | { |
4a64f543 MS |
5857 | /* Although the print_one can possibly print all locations, |
5858 | calling it here is not likely to get any nice result. So, | |
5859 | make sure there's just one location. */ | |
0d381245 | 5860 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 5861 | b->ops->print_one (b, last_loc); |
0d381245 | 5862 | } |
3086aeae DJ |
5863 | else |
5864 | switch (b->type) | |
5865 | { | |
5866 | case bp_none: | |
5867 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 5868 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 5869 | break; |
c906108c | 5870 | |
3086aeae DJ |
5871 | case bp_watchpoint: |
5872 | case bp_hardware_watchpoint: | |
5873 | case bp_read_watchpoint: | |
5874 | case bp_access_watchpoint: | |
3a5c3e22 PA |
5875 | { |
5876 | struct watchpoint *w = (struct watchpoint *) b; | |
5877 | ||
5878 | /* Field 4, the address, is omitted (which makes the columns | |
5879 | not line up too nicely with the headers, but the effect | |
5880 | is relatively readable). */ | |
5881 | if (opts.addressprint) | |
5882 | ui_out_field_skip (uiout, "addr"); | |
5883 | annotate_field (5); | |
5884 | ui_out_field_string (uiout, "what", w->exp_string); | |
5885 | } | |
3086aeae DJ |
5886 | break; |
5887 | ||
3086aeae DJ |
5888 | case bp_breakpoint: |
5889 | case bp_hardware_breakpoint: | |
5890 | case bp_until: | |
5891 | case bp_finish: | |
5892 | case bp_longjmp: | |
5893 | case bp_longjmp_resume: | |
e2e4d78b | 5894 | case bp_longjmp_call_dummy: |
186c406b TT |
5895 | case bp_exception: |
5896 | case bp_exception_resume: | |
3086aeae | 5897 | case bp_step_resume: |
2c03e5be | 5898 | case bp_hp_step_resume: |
3086aeae DJ |
5899 | case bp_watchpoint_scope: |
5900 | case bp_call_dummy: | |
aa7d318d | 5901 | case bp_std_terminate: |
3086aeae DJ |
5902 | case bp_shlib_event: |
5903 | case bp_thread_event: | |
5904 | case bp_overlay_event: | |
0fd8e87f | 5905 | case bp_longjmp_master: |
aa7d318d | 5906 | case bp_std_terminate_master: |
186c406b | 5907 | case bp_exception_master: |
1042e4c0 | 5908 | case bp_tracepoint: |
7a697b8d | 5909 | case bp_fast_tracepoint: |
0fb4aa4b | 5910 | case bp_static_tracepoint: |
e7e0cddf | 5911 | case bp_dprintf: |
4efc6507 | 5912 | case bp_jit_event: |
0e30163f JK |
5913 | case bp_gnu_ifunc_resolver: |
5914 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 5915 | if (opts.addressprint) |
3086aeae DJ |
5916 | { |
5917 | annotate_field (4); | |
54e52265 | 5918 | if (header_of_multiple) |
0d381245 | 5919 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 5920 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 5921 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 5922 | else |
5af949e3 UW |
5923 | ui_out_field_core_addr (uiout, "addr", |
5924 | loc->gdbarch, loc->address); | |
3086aeae DJ |
5925 | } |
5926 | annotate_field (5); | |
0d381245 | 5927 | if (!header_of_multiple) |
170b53b2 | 5928 | print_breakpoint_location (b, loc); |
0d381245 | 5929 | if (b->loc) |
a6d9a66e | 5930 | *last_loc = b->loc; |
3086aeae DJ |
5931 | break; |
5932 | } | |
c906108c | 5933 | |
6c95b8df PA |
5934 | |
5935 | /* For backward compatibility, don't display inferiors unless there | |
5936 | are several. */ | |
5937 | if (loc != NULL | |
5938 | && !header_of_multiple | |
5939 | && (allflag | |
f5656ead | 5940 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
5941 | && (number_of_program_spaces () > 1 |
5942 | || number_of_inferiors () > 1) | |
4a64f543 MS |
5943 | /* LOC is for existing B, it cannot be in |
5944 | moribund_locations and thus having NULL OWNER. */ | |
6c95b8df PA |
5945 | && loc->owner->type != bp_catchpoint))) |
5946 | { | |
5947 | struct inferior *inf; | |
5948 | int first = 1; | |
5949 | ||
5950 | for (inf = inferior_list; inf != NULL; inf = inf->next) | |
5951 | { | |
5952 | if (inf->pspace == loc->pspace) | |
5953 | { | |
5954 | if (first) | |
5955 | { | |
5956 | first = 0; | |
5957 | ui_out_text (uiout, " inf "); | |
5958 | } | |
5959 | else | |
5960 | ui_out_text (uiout, ", "); | |
5961 | ui_out_text (uiout, plongest (inf->num)); | |
5962 | } | |
5963 | } | |
5964 | } | |
5965 | ||
4a306c9a | 5966 | if (!part_of_multiple) |
c4093a6a | 5967 | { |
4a306c9a JB |
5968 | if (b->thread != -1) |
5969 | { | |
5970 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 5971 | "stop only in" line a little further down. */ |
4a306c9a JB |
5972 | ui_out_text (uiout, " thread "); |
5973 | ui_out_field_int (uiout, "thread", b->thread); | |
5974 | } | |
5975 | else if (b->task != 0) | |
5976 | { | |
5977 | ui_out_text (uiout, " task "); | |
5978 | ui_out_field_int (uiout, "task", b->task); | |
5979 | } | |
c4093a6a | 5980 | } |
f1310107 | 5981 | |
8b93c638 | 5982 | ui_out_text (uiout, "\n"); |
f1310107 | 5983 | |
348d480f | 5984 | if (!part_of_multiple) |
f1310107 TJB |
5985 | b->ops->print_one_detail (b, uiout); |
5986 | ||
0d381245 | 5987 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
5988 | { |
5989 | annotate_field (6); | |
8b93c638 | 5990 | ui_out_text (uiout, "\tstop only in stack frame at "); |
e5dd4106 | 5991 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 5992 | the frame ID. */ |
5af949e3 UW |
5993 | ui_out_field_core_addr (uiout, "frame", |
5994 | b->gdbarch, b->frame_id.stack_addr); | |
8b93c638 | 5995 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
5996 | } |
5997 | ||
28010a5d | 5998 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
5999 | { |
6000 | annotate_field (7); | |
d77f58be | 6001 | if (is_tracepoint (b)) |
1042e4c0 SS |
6002 | ui_out_text (uiout, "\ttrace only if "); |
6003 | else | |
6004 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 | 6005 | ui_out_field_string (uiout, "cond", b->cond_string); |
b775012e LM |
6006 | |
6007 | /* Print whether the target is doing the breakpoint's condition | |
6008 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6009 | if (is_breakpoint (b) | |
6010 | && breakpoint_condition_evaluation_mode () | |
6011 | == condition_evaluation_target) | |
6012 | { | |
6013 | ui_out_text (uiout, " ("); | |
6014 | ui_out_field_string (uiout, "evaluated-by", | |
6015 | bp_condition_evaluator (b)); | |
6016 | ui_out_text (uiout, " evals)"); | |
6017 | } | |
0101ce28 JJ |
6018 | ui_out_text (uiout, "\n"); |
6019 | } | |
6020 | ||
0d381245 | 6021 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6022 | { |
4a64f543 | 6023 | /* FIXME should make an annotation for this. */ |
8b93c638 JM |
6024 | ui_out_text (uiout, "\tstop only in thread "); |
6025 | ui_out_field_int (uiout, "thread", b->thread); | |
6026 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
6027 | } |
6028 | ||
63c715c6 | 6029 | if (!part_of_multiple && b->hit_count) |
c4093a6a | 6030 | { |
4a64f543 | 6031 | /* FIXME should make an annotation for this. */ |
c326b90e | 6032 | if (is_catchpoint (b)) |
8b93c638 | 6033 | ui_out_text (uiout, "\tcatchpoint"); |
f196051f SS |
6034 | else if (is_tracepoint (b)) |
6035 | ui_out_text (uiout, "\ttracepoint"); | |
8b93c638 JM |
6036 | else |
6037 | ui_out_text (uiout, "\tbreakpoint"); | |
6038 | ui_out_text (uiout, " already hit "); | |
6039 | ui_out_field_int (uiout, "times", b->hit_count); | |
6040 | if (b->hit_count == 1) | |
6041 | ui_out_text (uiout, " time\n"); | |
6042 | else | |
6043 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
6044 | } |
6045 | ||
4a64f543 MS |
6046 | /* Output the count also if it is zero, but only if this is mi. |
6047 | FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 6048 | if (ui_out_is_mi_like_p (uiout)) |
63c715c6 | 6049 | if (!part_of_multiple && b->hit_count == 0) |
fb40c209 | 6050 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 6051 | |
0d381245 | 6052 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6053 | { |
6054 | annotate_field (8); | |
8b93c638 JM |
6055 | ui_out_text (uiout, "\tignore next "); |
6056 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
6057 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 6058 | } |
059fb39f | 6059 | |
816338b5 SS |
6060 | /* Note that an enable count of 1 corresponds to "enable once" |
6061 | behavior, which is reported by the combination of enablement and | |
6062 | disposition, so we don't need to mention it here. */ | |
6063 | if (!part_of_multiple && b->enable_count > 1) | |
6064 | { | |
6065 | annotate_field (8); | |
6066 | ui_out_text (uiout, "\tdisable after "); | |
6067 | /* Tweak the wording to clarify that ignore and enable counts | |
6068 | are distinct, and have additive effect. */ | |
6069 | if (b->ignore_count) | |
6070 | ui_out_text (uiout, "additional "); | |
6071 | else | |
6072 | ui_out_text (uiout, "next "); | |
6073 | ui_out_field_int (uiout, "enable", b->enable_count); | |
6074 | ui_out_text (uiout, " hits\n"); | |
6075 | } | |
6076 | ||
f196051f SS |
6077 | if (!part_of_multiple && is_tracepoint (b)) |
6078 | { | |
6079 | struct tracepoint *tp = (struct tracepoint *) b; | |
6080 | ||
6081 | if (tp->traceframe_usage) | |
6082 | { | |
6083 | ui_out_text (uiout, "\ttrace buffer usage "); | |
6084 | ui_out_field_int (uiout, "traceframe-usage", tp->traceframe_usage); | |
6085 | ui_out_text (uiout, " bytes\n"); | |
6086 | } | |
6087 | } | |
6088 | ||
d3ce09f5 SS |
6089 | if (!part_of_multiple && b->extra_string |
6090 | && b->type == bp_dprintf && !b->commands) | |
6091 | { | |
6092 | annotate_field (7); | |
6093 | ui_out_text (uiout, "\t(agent printf) "); | |
6094 | ui_out_field_string (uiout, "printf", b->extra_string); | |
6095 | ui_out_text (uiout, "\n"); | |
6096 | } | |
6097 | ||
9add0f1b | 6098 | l = b->commands ? b->commands->commands : NULL; |
059fb39f | 6099 | if (!part_of_multiple && l) |
c4093a6a | 6100 | { |
3b31d625 EZ |
6101 | struct cleanup *script_chain; |
6102 | ||
c4093a6a | 6103 | annotate_field (9); |
3b31d625 | 6104 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 6105 | print_command_lines (uiout, l, 4); |
3b31d625 | 6106 | do_cleanups (script_chain); |
c4093a6a | 6107 | } |
d24317b4 | 6108 | |
d9b3f62e | 6109 | if (is_tracepoint (b)) |
1042e4c0 | 6110 | { |
d9b3f62e PA |
6111 | struct tracepoint *t = (struct tracepoint *) b; |
6112 | ||
6113 | if (!part_of_multiple && t->pass_count) | |
6114 | { | |
6115 | annotate_field (10); | |
6116 | ui_out_text (uiout, "\tpass count "); | |
6117 | ui_out_field_int (uiout, "pass", t->pass_count); | |
6118 | ui_out_text (uiout, " \n"); | |
6119 | } | |
1042e4c0 SS |
6120 | } |
6121 | ||
d24317b4 VP |
6122 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
6123 | { | |
3a5c3e22 PA |
6124 | if (is_watchpoint (b)) |
6125 | { | |
6126 | struct watchpoint *w = (struct watchpoint *) b; | |
6127 | ||
6128 | ui_out_field_string (uiout, "original-location", w->exp_string); | |
6129 | } | |
6130 | else if (b->addr_string) | |
d24317b4 | 6131 | ui_out_field_string (uiout, "original-location", b->addr_string); |
d24317b4 | 6132 | } |
c4093a6a | 6133 | } |
c5aa993b | 6134 | |
0d381245 VP |
6135 | static void |
6136 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6137 | struct bp_location **last_loc, |
6c95b8df | 6138 | int allflag) |
0d381245 | 6139 | { |
8d3788bd | 6140 | struct cleanup *bkpt_chain; |
79a45e25 | 6141 | struct ui_out *uiout = current_uiout; |
8d3788bd VP |
6142 | |
6143 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); | |
6144 | ||
12c5a436 | 6145 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
8d3788bd | 6146 | do_cleanups (bkpt_chain); |
0d381245 VP |
6147 | |
6148 | /* If this breakpoint has custom print function, | |
6149 | it's already printed. Otherwise, print individual | |
6150 | locations, if any. */ | |
6151 | if (b->ops == NULL || b->ops->print_one == NULL) | |
6152 | { | |
4a64f543 MS |
6153 | /* If breakpoint has a single location that is disabled, we |
6154 | print it as if it had several locations, since otherwise it's | |
6155 | hard to represent "breakpoint enabled, location disabled" | |
6156 | situation. | |
6157 | ||
6158 | Note that while hardware watchpoints have several locations | |
a3be7890 | 6159 | internally, that's not a property exposed to user. */ |
0d381245 | 6160 | if (b->loc |
a5606eee | 6161 | && !is_hardware_watchpoint (b) |
8d3788bd | 6162 | && (b->loc->next || !b->loc->enabled)) |
0d381245 VP |
6163 | { |
6164 | struct bp_location *loc; | |
6165 | int n = 1; | |
8d3788bd | 6166 | |
0d381245 | 6167 | for (loc = b->loc; loc; loc = loc->next, ++n) |
8d3788bd VP |
6168 | { |
6169 | struct cleanup *inner2 = | |
6170 | make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
6171 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); | |
6172 | do_cleanups (inner2); | |
6173 | } | |
0d381245 VP |
6174 | } |
6175 | } | |
6176 | } | |
6177 | ||
a6d9a66e UW |
6178 | static int |
6179 | breakpoint_address_bits (struct breakpoint *b) | |
6180 | { | |
6181 | int print_address_bits = 0; | |
6182 | struct bp_location *loc; | |
6183 | ||
6184 | for (loc = b->loc; loc; loc = loc->next) | |
6185 | { | |
c7437ca6 PA |
6186 | int addr_bit; |
6187 | ||
6188 | /* Software watchpoints that aren't watching memory don't have | |
6189 | an address to print. */ | |
6190 | if (b->type == bp_watchpoint && loc->watchpoint_type == -1) | |
6191 | continue; | |
6192 | ||
6193 | addr_bit = gdbarch_addr_bit (loc->gdbarch); | |
a6d9a66e UW |
6194 | if (addr_bit > print_address_bits) |
6195 | print_address_bits = addr_bit; | |
6196 | } | |
6197 | ||
6198 | return print_address_bits; | |
6199 | } | |
0d381245 | 6200 | |
c4093a6a JM |
6201 | struct captured_breakpoint_query_args |
6202 | { | |
6203 | int bnum; | |
6204 | }; | |
c5aa993b | 6205 | |
c4093a6a | 6206 | static int |
2b65245e | 6207 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
6208 | { |
6209 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 6210 | struct breakpoint *b; |
a6d9a66e | 6211 | struct bp_location *dummy_loc = NULL; |
cc59ec59 | 6212 | |
c4093a6a JM |
6213 | ALL_BREAKPOINTS (b) |
6214 | { | |
6215 | if (args->bnum == b->number) | |
c5aa993b | 6216 | { |
12c5a436 | 6217 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6218 | return GDB_RC_OK; |
c5aa993b | 6219 | } |
c4093a6a JM |
6220 | } |
6221 | return GDB_RC_NONE; | |
6222 | } | |
c5aa993b | 6223 | |
c4093a6a | 6224 | enum gdb_rc |
4a64f543 MS |
6225 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, |
6226 | char **error_message) | |
c4093a6a JM |
6227 | { |
6228 | struct captured_breakpoint_query_args args; | |
cc59ec59 | 6229 | |
c4093a6a JM |
6230 | args.bnum = bnum; |
6231 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
4a64f543 | 6232 | an error. */ |
b0b13bb4 DJ |
6233 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
6234 | error_message, RETURN_MASK_ALL) < 0) | |
6235 | return GDB_RC_FAIL; | |
6236 | else | |
6237 | return GDB_RC_OK; | |
c4093a6a | 6238 | } |
c5aa993b | 6239 | |
09d682a4 TT |
6240 | /* Return true if this breakpoint was set by the user, false if it is |
6241 | internal or momentary. */ | |
6242 | ||
6243 | int | |
6244 | user_breakpoint_p (struct breakpoint *b) | |
6245 | { | |
46c6471b | 6246 | return b->number > 0; |
09d682a4 TT |
6247 | } |
6248 | ||
7f3b0473 | 6249 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
6250 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
6251 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
6252 | FILTER is non-NULL, call it on each breakpoint and only include the | |
6253 | ones for which it returns non-zero. Return the total number of | |
6254 | breakpoints listed. */ | |
c906108c | 6255 | |
d77f58be | 6256 | static int |
e5a67952 | 6257 | breakpoint_1 (char *args, int allflag, |
4a64f543 | 6258 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 6259 | { |
52f0bd74 | 6260 | struct breakpoint *b; |
a6d9a66e | 6261 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6262 | int nr_printable_breakpoints; |
3b31d625 | 6263 | struct cleanup *bkpttbl_chain; |
79a45b7d | 6264 | struct value_print_options opts; |
a6d9a66e | 6265 | int print_address_bits = 0; |
269b11a2 | 6266 | int print_type_col_width = 14; |
79a45e25 | 6267 | struct ui_out *uiout = current_uiout; |
269b11a2 | 6268 | |
79a45b7d TT |
6269 | get_user_print_options (&opts); |
6270 | ||
4a64f543 MS |
6271 | /* Compute the number of rows in the table, as well as the size |
6272 | required for address fields. */ | |
7f3b0473 AC |
6273 | nr_printable_breakpoints = 0; |
6274 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6275 | { |
6276 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6277 | if (filter && !filter (b)) | |
6278 | continue; | |
6279 | ||
6280 | /* If we have an "args" string, it is a list of breakpoints to | |
6281 | accept. Skip the others. */ | |
6282 | if (args != NULL && *args != '\0') | |
6283 | { | |
6284 | if (allflag && parse_and_eval_long (args) != b->number) | |
6285 | continue; | |
6286 | if (!allflag && !number_is_in_list (args, b->number)) | |
6287 | continue; | |
6288 | } | |
269b11a2 | 6289 | |
e5a67952 MS |
6290 | if (allflag || user_breakpoint_p (b)) |
6291 | { | |
6292 | int addr_bit, type_len; | |
a6d9a66e | 6293 | |
e5a67952 MS |
6294 | addr_bit = breakpoint_address_bits (b); |
6295 | if (addr_bit > print_address_bits) | |
6296 | print_address_bits = addr_bit; | |
269b11a2 | 6297 | |
e5a67952 MS |
6298 | type_len = strlen (bptype_string (b->type)); |
6299 | if (type_len > print_type_col_width) | |
6300 | print_type_col_width = type_len; | |
6301 | ||
6302 | nr_printable_breakpoints++; | |
6303 | } | |
6304 | } | |
7f3b0473 | 6305 | |
79a45b7d | 6306 | if (opts.addressprint) |
3b31d625 | 6307 | bkpttbl_chain |
3e43a32a MS |
6308 | = make_cleanup_ui_out_table_begin_end (uiout, 6, |
6309 | nr_printable_breakpoints, | |
3b31d625 | 6310 | "BreakpointTable"); |
8b93c638 | 6311 | else |
3b31d625 | 6312 | bkpttbl_chain |
3e43a32a MS |
6313 | = make_cleanup_ui_out_table_begin_end (uiout, 5, |
6314 | nr_printable_breakpoints, | |
3b31d625 | 6315 | "BreakpointTable"); |
8b93c638 | 6316 | |
7f3b0473 | 6317 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
6318 | annotate_breakpoints_headers (); |
6319 | if (nr_printable_breakpoints > 0) | |
6320 | annotate_field (0); | |
4a64f543 | 6321 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
6322 | if (nr_printable_breakpoints > 0) |
6323 | annotate_field (1); | |
269b11a2 | 6324 | ui_out_table_header (uiout, print_type_col_width, ui_left, |
4a64f543 | 6325 | "type", "Type"); /* 2 */ |
d7faa9e7 AC |
6326 | if (nr_printable_breakpoints > 0) |
6327 | annotate_field (2); | |
4a64f543 | 6328 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ |
d7faa9e7 AC |
6329 | if (nr_printable_breakpoints > 0) |
6330 | annotate_field (3); | |
54e52265 | 6331 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 6332 | if (opts.addressprint) |
e5a67952 MS |
6333 | { |
6334 | if (nr_printable_breakpoints > 0) | |
6335 | annotate_field (4); | |
6336 | if (print_address_bits <= 32) | |
6337 | ui_out_table_header (uiout, 10, ui_left, | |
6338 | "addr", "Address"); /* 5 */ | |
6339 | else | |
6340 | ui_out_table_header (uiout, 18, ui_left, | |
6341 | "addr", "Address"); /* 5 */ | |
6342 | } | |
d7faa9e7 AC |
6343 | if (nr_printable_breakpoints > 0) |
6344 | annotate_field (5); | |
6345 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
6346 | ui_out_table_body (uiout); | |
6347 | if (nr_printable_breakpoints > 0) | |
6348 | annotate_breakpoints_table (); | |
7f3b0473 | 6349 | |
c4093a6a | 6350 | ALL_BREAKPOINTS (b) |
e5a67952 MS |
6351 | { |
6352 | QUIT; | |
6353 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6354 | if (filter && !filter (b)) | |
6355 | continue; | |
6356 | ||
6357 | /* If we have an "args" string, it is a list of breakpoints to | |
6358 | accept. Skip the others. */ | |
6359 | ||
6360 | if (args != NULL && *args != '\0') | |
6361 | { | |
6362 | if (allflag) /* maintenance info breakpoint */ | |
6363 | { | |
6364 | if (parse_and_eval_long (args) != b->number) | |
6365 | continue; | |
6366 | } | |
6367 | else /* all others */ | |
6368 | { | |
6369 | if (!number_is_in_list (args, b->number)) | |
6370 | continue; | |
6371 | } | |
6372 | } | |
6373 | /* We only print out user settable breakpoints unless the | |
6374 | allflag is set. */ | |
6375 | if (allflag || user_breakpoint_p (b)) | |
12c5a436 | 6376 | print_one_breakpoint (b, &last_loc, allflag); |
e5a67952 MS |
6377 | } |
6378 | ||
3b31d625 | 6379 | do_cleanups (bkpttbl_chain); |
698384cd | 6380 | |
7f3b0473 | 6381 | if (nr_printable_breakpoints == 0) |
c906108c | 6382 | { |
4a64f543 MS |
6383 | /* If there's a filter, let the caller decide how to report |
6384 | empty list. */ | |
d77f58be SS |
6385 | if (!filter) |
6386 | { | |
e5a67952 | 6387 | if (args == NULL || *args == '\0') |
d77f58be SS |
6388 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); |
6389 | else | |
4a64f543 | 6390 | ui_out_message (uiout, 0, |
e5a67952 MS |
6391 | "No breakpoint or watchpoint matching '%s'.\n", |
6392 | args); | |
d77f58be | 6393 | } |
c906108c SS |
6394 | } |
6395 | else | |
c4093a6a | 6396 | { |
a6d9a66e UW |
6397 | if (last_loc && !server_command) |
6398 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 6399 | } |
c906108c | 6400 | |
4a64f543 | 6401 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6402 | there have been breakpoints? */ |
c906108c | 6403 | annotate_breakpoints_table_end (); |
d77f58be SS |
6404 | |
6405 | return nr_printable_breakpoints; | |
c906108c SS |
6406 | } |
6407 | ||
ad443146 SS |
6408 | /* Display the value of default-collect in a way that is generally |
6409 | compatible with the breakpoint list. */ | |
6410 | ||
6411 | static void | |
6412 | default_collect_info (void) | |
6413 | { | |
79a45e25 PA |
6414 | struct ui_out *uiout = current_uiout; |
6415 | ||
ad443146 SS |
6416 | /* If it has no value (which is frequently the case), say nothing; a |
6417 | message like "No default-collect." gets in user's face when it's | |
6418 | not wanted. */ | |
6419 | if (!*default_collect) | |
6420 | return; | |
6421 | ||
6422 | /* The following phrase lines up nicely with per-tracepoint collect | |
6423 | actions. */ | |
6424 | ui_out_text (uiout, "default collect "); | |
6425 | ui_out_field_string (uiout, "default-collect", default_collect); | |
6426 | ui_out_text (uiout, " \n"); | |
6427 | } | |
6428 | ||
c906108c | 6429 | static void |
e5a67952 | 6430 | breakpoints_info (char *args, int from_tty) |
c906108c | 6431 | { |
e5a67952 | 6432 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
6433 | |
6434 | default_collect_info (); | |
d77f58be SS |
6435 | } |
6436 | ||
6437 | static void | |
e5a67952 | 6438 | watchpoints_info (char *args, int from_tty) |
d77f58be | 6439 | { |
e5a67952 | 6440 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
79a45e25 | 6441 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6442 | |
6443 | if (num_printed == 0) | |
6444 | { | |
e5a67952 | 6445 | if (args == NULL || *args == '\0') |
d77f58be SS |
6446 | ui_out_message (uiout, 0, "No watchpoints.\n"); |
6447 | else | |
e5a67952 | 6448 | ui_out_message (uiout, 0, "No watchpoint matching '%s'.\n", args); |
d77f58be | 6449 | } |
c906108c SS |
6450 | } |
6451 | ||
7a292a7a | 6452 | static void |
e5a67952 | 6453 | maintenance_info_breakpoints (char *args, int from_tty) |
c906108c | 6454 | { |
e5a67952 | 6455 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
6456 | |
6457 | default_collect_info (); | |
c906108c SS |
6458 | } |
6459 | ||
0d381245 | 6460 | static int |
714835d5 | 6461 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6462 | struct program_space *pspace, |
714835d5 | 6463 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6464 | { |
6465 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6466 | |
0d381245 VP |
6467 | for (; bl; bl = bl->next) |
6468 | { | |
6c95b8df PA |
6469 | if (bl->pspace == pspace |
6470 | && bl->address == pc | |
0d381245 VP |
6471 | && (!overlay_debugging || bl->section == section)) |
6472 | return 1; | |
6473 | } | |
6474 | return 0; | |
6475 | } | |
6476 | ||
672f9b60 | 6477 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6478 | concerns with logical breakpoints, so we match program spaces, not |
6479 | address spaces. */ | |
c906108c SS |
6480 | |
6481 | static void | |
6c95b8df PA |
6482 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6483 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6484 | struct obj_section *section, int thread) |
c906108c | 6485 | { |
52f0bd74 AC |
6486 | int others = 0; |
6487 | struct breakpoint *b; | |
c906108c SS |
6488 | |
6489 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
6490 | others += (user_breakpoint_p (b) |
6491 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
6492 | if (others > 0) |
6493 | { | |
a3f17187 AC |
6494 | if (others == 1) |
6495 | printf_filtered (_("Note: breakpoint ")); | |
6496 | else /* if (others == ???) */ | |
6497 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6498 | ALL_BREAKPOINTS (b) |
672f9b60 | 6499 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6500 | { |
6501 | others--; | |
6502 | printf_filtered ("%d", b->number); | |
6503 | if (b->thread == -1 && thread != -1) | |
6504 | printf_filtered (" (all threads)"); | |
6505 | else if (b->thread != -1) | |
6506 | printf_filtered (" (thread %d)", b->thread); | |
6507 | printf_filtered ("%s%s ", | |
059fb39f | 6508 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6509 | || b->enable_state == bp_call_disabled) |
0d381245 VP |
6510 | ? " (disabled)" |
6511 | : b->enable_state == bp_permanent | |
6512 | ? " (permanent)" | |
6513 | : ""), | |
6514 | (others > 1) ? "," | |
6515 | : ((others == 1) ? " and" : "")); | |
6516 | } | |
a3f17187 | 6517 | printf_filtered (_("also set at pc ")); |
5af949e3 | 6518 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
6519 | printf_filtered (".\n"); |
6520 | } | |
6521 | } | |
6522 | \f | |
c906108c | 6523 | |
e4f237da KB |
6524 | /* Return true iff it is meaningful to use the address member of |
6525 | BPT. For some breakpoint types, the address member is irrelevant | |
6526 | and it makes no sense to attempt to compare it to other addresses | |
6527 | (or use it for any other purpose either). | |
6528 | ||
4a64f543 MS |
6529 | More specifically, each of the following breakpoint types will |
6530 | always have a zero valued address and we don't want to mark | |
6531 | breakpoints of any of these types to be a duplicate of an actual | |
6532 | breakpoint at address zero: | |
e4f237da KB |
6533 | |
6534 | bp_watchpoint | |
2d134ed3 PA |
6535 | bp_catchpoint |
6536 | ||
6537 | */ | |
e4f237da KB |
6538 | |
6539 | static int | |
6540 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
6541 | { | |
6542 | enum bptype type = bpt->type; | |
6543 | ||
2d134ed3 PA |
6544 | return (type != bp_watchpoint && type != bp_catchpoint); |
6545 | } | |
6546 | ||
6547 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6548 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6549 | ||
6550 | static int | |
4a64f543 MS |
6551 | watchpoint_locations_match (struct bp_location *loc1, |
6552 | struct bp_location *loc2) | |
2d134ed3 | 6553 | { |
3a5c3e22 PA |
6554 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6555 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6556 | ||
6557 | /* Both of them must exist. */ | |
6558 | gdb_assert (w1 != NULL); | |
6559 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6560 | |
4a64f543 MS |
6561 | /* If the target can evaluate the condition expression in hardware, |
6562 | then we we need to insert both watchpoints even if they are at | |
6563 | the same place. Otherwise the watchpoint will only trigger when | |
6564 | the condition of whichever watchpoint was inserted evaluates to | |
6565 | true, not giving a chance for GDB to check the condition of the | |
6566 | other watchpoint. */ | |
3a5c3e22 | 6567 | if ((w1->cond_exp |
4a64f543 MS |
6568 | && target_can_accel_watchpoint_condition (loc1->address, |
6569 | loc1->length, | |
0cf6dd15 | 6570 | loc1->watchpoint_type, |
3a5c3e22 PA |
6571 | w1->cond_exp)) |
6572 | || (w2->cond_exp | |
4a64f543 MS |
6573 | && target_can_accel_watchpoint_condition (loc2->address, |
6574 | loc2->length, | |
0cf6dd15 | 6575 | loc2->watchpoint_type, |
3a5c3e22 | 6576 | w2->cond_exp))) |
0cf6dd15 TJB |
6577 | return 0; |
6578 | ||
85d721b8 PA |
6579 | /* Note that this checks the owner's type, not the location's. In |
6580 | case the target does not support read watchpoints, but does | |
6581 | support access watchpoints, we'll have bp_read_watchpoint | |
6582 | watchpoints with hw_access locations. Those should be considered | |
6583 | duplicates of hw_read locations. The hw_read locations will | |
6584 | become hw_access locations later. */ | |
2d134ed3 PA |
6585 | return (loc1->owner->type == loc2->owner->type |
6586 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6587 | && loc1->address == loc2->address | |
6588 | && loc1->length == loc2->length); | |
e4f237da KB |
6589 | } |
6590 | ||
6c95b8df PA |
6591 | /* Returns true if {ASPACE1,ADDR1} and {ASPACE2,ADDR2} represent the |
6592 | same breakpoint location. In most targets, this can only be true | |
6593 | if ASPACE1 matches ASPACE2. On targets that have global | |
6594 | breakpoints, the address space doesn't really matter. */ | |
6595 | ||
6596 | static int | |
6597 | breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1, | |
6598 | struct address_space *aspace2, CORE_ADDR addr2) | |
6599 | { | |
f5656ead | 6600 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6601 | || aspace1 == aspace2) |
6602 | && addr1 == addr2); | |
6603 | } | |
6604 | ||
f1310107 TJB |
6605 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6606 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6607 | matches ASPACE2. On targets that have global breakpoints, the address | |
6608 | space doesn't really matter. */ | |
6609 | ||
6610 | static int | |
6611 | breakpoint_address_match_range (struct address_space *aspace1, CORE_ADDR addr1, | |
6612 | int len1, struct address_space *aspace2, | |
6613 | CORE_ADDR addr2) | |
6614 | { | |
f5656ead | 6615 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
6616 | || aspace1 == aspace2) |
6617 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6618 | } | |
6619 | ||
6620 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6621 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6622 | matches the breakpoint's address space. On targets that have global | |
6623 | breakpoints, the address space doesn't really matter. */ | |
6624 | ||
6625 | static int | |
6626 | breakpoint_location_address_match (struct bp_location *bl, | |
6627 | struct address_space *aspace, | |
6628 | CORE_ADDR addr) | |
6629 | { | |
6630 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6631 | aspace, addr) | |
6632 | || (bl->length | |
6633 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6634 | bl->address, bl->length, | |
6635 | aspace, addr))); | |
6636 | } | |
6637 | ||
1e4d1764 YQ |
6638 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6639 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6640 | true, otherwise returns false. */ | |
6641 | ||
6642 | static int | |
6643 | tracepoint_locations_match (struct bp_location *loc1, | |
6644 | struct bp_location *loc2) | |
6645 | { | |
6646 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6647 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6648 | locations at the same address of different tracepoints are regarded as | |
6649 | different locations. */ | |
6650 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
6651 | else | |
6652 | return 0; | |
6653 | } | |
6654 | ||
2d134ed3 PA |
6655 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
6656 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
6657 | represent the same location. */ | |
6658 | ||
6659 | static int | |
4a64f543 MS |
6660 | breakpoint_locations_match (struct bp_location *loc1, |
6661 | struct bp_location *loc2) | |
2d134ed3 | 6662 | { |
2bdf28a0 JK |
6663 | int hw_point1, hw_point2; |
6664 | ||
6665 | /* Both of them must not be in moribund_locations. */ | |
6666 | gdb_assert (loc1->owner != NULL); | |
6667 | gdb_assert (loc2->owner != NULL); | |
6668 | ||
6669 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
6670 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
6671 | |
6672 | if (hw_point1 != hw_point2) | |
6673 | return 0; | |
6674 | else if (hw_point1) | |
6675 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
6676 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
6677 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 6678 | else |
f1310107 TJB |
6679 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
6680 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
6681 | loc2->pspace->aspace, loc2->address) | |
6682 | && loc1->length == loc2->length); | |
2d134ed3 PA |
6683 | } |
6684 | ||
76897487 KB |
6685 | static void |
6686 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
6687 | int bnum, int have_bnum) | |
6688 | { | |
f63fbe86 MS |
6689 | /* The longest string possibly returned by hex_string_custom |
6690 | is 50 chars. These must be at least that big for safety. */ | |
6691 | char astr1[64]; | |
6692 | char astr2[64]; | |
76897487 | 6693 | |
bb599908 PH |
6694 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
6695 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 6696 | if (have_bnum) |
8a3fe4f8 | 6697 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
6698 | bnum, astr1, astr2); |
6699 | else | |
8a3fe4f8 | 6700 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
6701 | } |
6702 | ||
4a64f543 MS |
6703 | /* Adjust a breakpoint's address to account for architectural |
6704 | constraints on breakpoint placement. Return the adjusted address. | |
6705 | Note: Very few targets require this kind of adjustment. For most | |
6706 | targets, this function is simply the identity function. */ | |
76897487 KB |
6707 | |
6708 | static CORE_ADDR | |
a6d9a66e UW |
6709 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
6710 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 6711 | { |
a6d9a66e | 6712 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
6713 | { |
6714 | /* Very few targets need any kind of breakpoint adjustment. */ | |
6715 | return bpaddr; | |
6716 | } | |
88f7da05 KB |
6717 | else if (bptype == bp_watchpoint |
6718 | || bptype == bp_hardware_watchpoint | |
6719 | || bptype == bp_read_watchpoint | |
6720 | || bptype == bp_access_watchpoint | |
fe798b75 | 6721 | || bptype == bp_catchpoint) |
88f7da05 KB |
6722 | { |
6723 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
6724 | have their addresses modified. */ | |
6725 | return bpaddr; | |
6726 | } | |
76897487 KB |
6727 | else |
6728 | { | |
6729 | CORE_ADDR adjusted_bpaddr; | |
6730 | ||
6731 | /* Some targets have architectural constraints on the placement | |
6732 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 6733 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
6734 | |
6735 | /* An adjusted breakpoint address can significantly alter | |
6736 | a user's expectations. Print a warning if an adjustment | |
6737 | is required. */ | |
6738 | if (adjusted_bpaddr != bpaddr) | |
6739 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
6740 | ||
6741 | return adjusted_bpaddr; | |
6742 | } | |
6743 | } | |
6744 | ||
28010a5d PA |
6745 | void |
6746 | init_bp_location (struct bp_location *loc, const struct bp_location_ops *ops, | |
6747 | struct breakpoint *owner) | |
7cc221ef | 6748 | { |
7cc221ef DJ |
6749 | memset (loc, 0, sizeof (*loc)); |
6750 | ||
348d480f PA |
6751 | gdb_assert (ops != NULL); |
6752 | ||
28010a5d PA |
6753 | loc->ops = ops; |
6754 | loc->owner = owner; | |
511a6cd4 | 6755 | loc->cond = NULL; |
b775012e | 6756 | loc->cond_bytecode = NULL; |
0d381245 VP |
6757 | loc->shlib_disabled = 0; |
6758 | loc->enabled = 1; | |
e049a4b5 | 6759 | |
28010a5d | 6760 | switch (owner->type) |
e049a4b5 DJ |
6761 | { |
6762 | case bp_breakpoint: | |
6763 | case bp_until: | |
6764 | case bp_finish: | |
6765 | case bp_longjmp: | |
6766 | case bp_longjmp_resume: | |
e2e4d78b | 6767 | case bp_longjmp_call_dummy: |
186c406b TT |
6768 | case bp_exception: |
6769 | case bp_exception_resume: | |
e049a4b5 | 6770 | case bp_step_resume: |
2c03e5be | 6771 | case bp_hp_step_resume: |
e049a4b5 DJ |
6772 | case bp_watchpoint_scope: |
6773 | case bp_call_dummy: | |
aa7d318d | 6774 | case bp_std_terminate: |
e049a4b5 DJ |
6775 | case bp_shlib_event: |
6776 | case bp_thread_event: | |
6777 | case bp_overlay_event: | |
4efc6507 | 6778 | case bp_jit_event: |
0fd8e87f | 6779 | case bp_longjmp_master: |
aa7d318d | 6780 | case bp_std_terminate_master: |
186c406b | 6781 | case bp_exception_master: |
0e30163f JK |
6782 | case bp_gnu_ifunc_resolver: |
6783 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 6784 | case bp_dprintf: |
e049a4b5 | 6785 | loc->loc_type = bp_loc_software_breakpoint; |
b775012e | 6786 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
6787 | break; |
6788 | case bp_hardware_breakpoint: | |
6789 | loc->loc_type = bp_loc_hardware_breakpoint; | |
b775012e | 6790 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
6791 | break; |
6792 | case bp_hardware_watchpoint: | |
6793 | case bp_read_watchpoint: | |
6794 | case bp_access_watchpoint: | |
6795 | loc->loc_type = bp_loc_hardware_watchpoint; | |
6796 | break; | |
6797 | case bp_watchpoint: | |
ce78b96d | 6798 | case bp_catchpoint: |
15c3d785 PA |
6799 | case bp_tracepoint: |
6800 | case bp_fast_tracepoint: | |
0fb4aa4b | 6801 | case bp_static_tracepoint: |
e049a4b5 DJ |
6802 | loc->loc_type = bp_loc_other; |
6803 | break; | |
6804 | default: | |
e2e0b3e5 | 6805 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
6806 | } |
6807 | ||
f431efe5 | 6808 | loc->refc = 1; |
28010a5d PA |
6809 | } |
6810 | ||
6811 | /* Allocate a struct bp_location. */ | |
6812 | ||
6813 | static struct bp_location * | |
6814 | allocate_bp_location (struct breakpoint *bpt) | |
6815 | { | |
348d480f PA |
6816 | return bpt->ops->allocate_location (bpt); |
6817 | } | |
7cc221ef | 6818 | |
f431efe5 PA |
6819 | static void |
6820 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 6821 | { |
348d480f | 6822 | loc->ops->dtor (loc); |
fe3f5fa8 VP |
6823 | xfree (loc); |
6824 | } | |
6825 | ||
f431efe5 PA |
6826 | /* Increment reference count. */ |
6827 | ||
6828 | static void | |
6829 | incref_bp_location (struct bp_location *bl) | |
6830 | { | |
6831 | ++bl->refc; | |
6832 | } | |
6833 | ||
6834 | /* Decrement reference count. If the reference count reaches 0, | |
6835 | destroy the bp_location. Sets *BLP to NULL. */ | |
6836 | ||
6837 | static void | |
6838 | decref_bp_location (struct bp_location **blp) | |
6839 | { | |
0807b50c PA |
6840 | gdb_assert ((*blp)->refc > 0); |
6841 | ||
f431efe5 PA |
6842 | if (--(*blp)->refc == 0) |
6843 | free_bp_location (*blp); | |
6844 | *blp = NULL; | |
6845 | } | |
6846 | ||
346774a9 | 6847 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 6848 | |
346774a9 PA |
6849 | static void |
6850 | add_to_breakpoint_chain (struct breakpoint *b) | |
c906108c | 6851 | { |
346774a9 | 6852 | struct breakpoint *b1; |
c906108c | 6853 | |
346774a9 PA |
6854 | /* Add this breakpoint to the end of the chain so that a list of |
6855 | breakpoints will come out in order of increasing numbers. */ | |
6856 | ||
6857 | b1 = breakpoint_chain; | |
6858 | if (b1 == 0) | |
6859 | breakpoint_chain = b; | |
6860 | else | |
6861 | { | |
6862 | while (b1->next) | |
6863 | b1 = b1->next; | |
6864 | b1->next = b; | |
6865 | } | |
6866 | } | |
6867 | ||
6868 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
6869 | ||
6870 | static void | |
6871 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
6872 | struct gdbarch *gdbarch, | |
28010a5d | 6873 | enum bptype bptype, |
c0a91b2b | 6874 | const struct breakpoint_ops *ops) |
346774a9 | 6875 | { |
c906108c | 6876 | memset (b, 0, sizeof (*b)); |
2219d63c | 6877 | |
348d480f PA |
6878 | gdb_assert (ops != NULL); |
6879 | ||
28010a5d | 6880 | b->ops = ops; |
4d28f7a8 | 6881 | b->type = bptype; |
a6d9a66e | 6882 | b->gdbarch = gdbarch; |
c906108c SS |
6883 | b->language = current_language->la_language; |
6884 | b->input_radix = input_radix; | |
6885 | b->thread = -1; | |
b5de0fa7 | 6886 | b->enable_state = bp_enabled; |
c906108c SS |
6887 | b->next = 0; |
6888 | b->silent = 0; | |
6889 | b->ignore_count = 0; | |
6890 | b->commands = NULL; | |
818dd999 | 6891 | b->frame_id = null_frame_id; |
0d381245 | 6892 | b->condition_not_parsed = 0; |
84f4c1fe | 6893 | b->py_bp_object = NULL; |
d0fb5eae | 6894 | b->related_breakpoint = b; |
346774a9 PA |
6895 | } |
6896 | ||
6897 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
6898 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
6899 | |
6900 | static struct breakpoint * | |
6901 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 6902 | enum bptype bptype, |
c0a91b2b | 6903 | const struct breakpoint_ops *ops) |
346774a9 PA |
6904 | { |
6905 | struct breakpoint *b = XNEW (struct breakpoint); | |
6906 | ||
348d480f | 6907 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
c56053d2 | 6908 | add_to_breakpoint_chain (b); |
0d381245 VP |
6909 | return b; |
6910 | } | |
6911 | ||
0e30163f JK |
6912 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
6913 | resolutions should be made as the user specified the location explicitly | |
6914 | enough. */ | |
6915 | ||
0d381245 | 6916 | static void |
0e30163f | 6917 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 6918 | { |
2bdf28a0 JK |
6919 | gdb_assert (loc->owner != NULL); |
6920 | ||
0d381245 | 6921 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 6922 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 6923 | || is_tracepoint (loc->owner)) |
0d381245 | 6924 | { |
0e30163f | 6925 | int is_gnu_ifunc; |
2c02bd72 | 6926 | const char *function_name; |
6a3a010b | 6927 | CORE_ADDR func_addr; |
0e30163f | 6928 | |
2c02bd72 | 6929 | find_pc_partial_function_gnu_ifunc (loc->address, &function_name, |
6a3a010b | 6930 | &func_addr, NULL, &is_gnu_ifunc); |
0e30163f JK |
6931 | |
6932 | if (is_gnu_ifunc && !explicit_loc) | |
6933 | { | |
6934 | struct breakpoint *b = loc->owner; | |
6935 | ||
6936 | gdb_assert (loc->pspace == current_program_space); | |
2c02bd72 | 6937 | if (gnu_ifunc_resolve_name (function_name, |
0e30163f JK |
6938 | &loc->requested_address)) |
6939 | { | |
6940 | /* Recalculate ADDRESS based on new REQUESTED_ADDRESS. */ | |
6941 | loc->address = adjust_breakpoint_address (loc->gdbarch, | |
6942 | loc->requested_address, | |
6943 | b->type); | |
6944 | } | |
6945 | else if (b->type == bp_breakpoint && b->loc == loc | |
6946 | && loc->next == NULL && b->related_breakpoint == b) | |
6947 | { | |
6948 | /* Create only the whole new breakpoint of this type but do not | |
6949 | mess more complicated breakpoints with multiple locations. */ | |
6950 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b MR |
6951 | /* Remember the resolver's address for use by the return |
6952 | breakpoint. */ | |
6953 | loc->related_address = func_addr; | |
0e30163f JK |
6954 | } |
6955 | } | |
6956 | ||
2c02bd72 DE |
6957 | if (function_name) |
6958 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
6959 | } |
6960 | } | |
6961 | ||
a6d9a66e | 6962 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 6963 | struct gdbarch * |
a6d9a66e UW |
6964 | get_sal_arch (struct symtab_and_line sal) |
6965 | { | |
6966 | if (sal.section) | |
6967 | return get_objfile_arch (sal.section->objfile); | |
6968 | if (sal.symtab) | |
6969 | return get_objfile_arch (sal.symtab->objfile); | |
6970 | ||
6971 | return NULL; | |
6972 | } | |
6973 | ||
346774a9 PA |
6974 | /* Low level routine for partially initializing a breakpoint of type |
6975 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 6976 | file name, and line number are provided by SAL. |
0d381245 VP |
6977 | |
6978 | It is expected that the caller will complete the initialization of | |
6979 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 6980 | information regarding the creation of a new breakpoint. */ |
0d381245 | 6981 | |
346774a9 PA |
6982 | static void |
6983 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 6984 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 6985 | const struct breakpoint_ops *ops) |
0d381245 | 6986 | { |
28010a5d | 6987 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 6988 | |
3742cc8b | 6989 | add_location_to_breakpoint (b, &sal); |
0d381245 | 6990 | |
6c95b8df PA |
6991 | if (bptype != bp_catchpoint) |
6992 | gdb_assert (sal.pspace != NULL); | |
6993 | ||
f8eba3c6 TT |
6994 | /* Store the program space that was used to set the breakpoint, |
6995 | except for ordinary breakpoints, which are independent of the | |
6996 | program space. */ | |
6997 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
6998 | b->pspace = sal.pspace; | |
0d381245 | 6999 | |
ef37bb07 | 7000 | annotate_breakpoints_changed (); |
346774a9 | 7001 | } |
c906108c | 7002 | |
346774a9 PA |
7003 | /* set_raw_breakpoint is a low level routine for allocating and |
7004 | partially initializing a breakpoint of type BPTYPE. The newly | |
7005 | created breakpoint's address, section, source file name, and line | |
7006 | number are provided by SAL. The newly created and partially | |
7007 | initialized breakpoint is added to the breakpoint chain and | |
7008 | is also returned as the value of this function. | |
7009 | ||
7010 | It is expected that the caller will complete the initialization of | |
7011 | the newly created breakpoint struct as well as output any status | |
7012 | information regarding the creation of a new breakpoint. In | |
7013 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7014 | number! Care should be taken to not allow an error to occur | |
7015 | prior to completing the initialization of the breakpoint. If this | |
7016 | should happen, a bogus breakpoint will be left on the chain. */ | |
7017 | ||
7018 | struct breakpoint * | |
7019 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7020 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7021 | const struct breakpoint_ops *ops) |
346774a9 PA |
7022 | { |
7023 | struct breakpoint *b = XNEW (struct breakpoint); | |
7024 | ||
348d480f | 7025 | init_raw_breakpoint (b, gdbarch, sal, bptype, ops); |
c56053d2 | 7026 | add_to_breakpoint_chain (b); |
c906108c SS |
7027 | return b; |
7028 | } | |
7029 | ||
c2c6d25f JM |
7030 | |
7031 | /* Note that the breakpoint object B describes a permanent breakpoint | |
7032 | instruction, hard-wired into the inferior's code. */ | |
7033 | void | |
7034 | make_breakpoint_permanent (struct breakpoint *b) | |
7035 | { | |
0d381245 | 7036 | struct bp_location *bl; |
cc59ec59 | 7037 | |
b5de0fa7 | 7038 | b->enable_state = bp_permanent; |
c2c6d25f | 7039 | |
4a64f543 MS |
7040 | /* By definition, permanent breakpoints are already present in the |
7041 | code. Mark all locations as inserted. For now, | |
7042 | make_breakpoint_permanent is called in just one place, so it's | |
7043 | hard to say if it's reasonable to have permanent breakpoint with | |
e5dd4106 | 7044 | multiple locations or not, but it's easy to implement. */ |
0d381245 VP |
7045 | for (bl = b->loc; bl; bl = bl->next) |
7046 | bl->inserted = 1; | |
c2c6d25f JM |
7047 | } |
7048 | ||
53a5351d | 7049 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7050 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7051 | initiated the operation. */ | |
c906108c SS |
7052 | |
7053 | void | |
186c406b | 7054 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7055 | { |
35df4500 | 7056 | struct breakpoint *b, *b_tmp; |
186c406b | 7057 | int thread = tp->num; |
0fd8e87f UW |
7058 | |
7059 | /* To avoid having to rescan all objfile symbols at every step, | |
7060 | we maintain a list of continually-inserted but always disabled | |
7061 | longjmp "master" breakpoints. Here, we simply create momentary | |
7062 | clones of those and enable them for the requested thread. */ | |
35df4500 | 7063 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 7064 | if (b->pspace == current_program_space |
186c406b TT |
7065 | && (b->type == bp_longjmp_master |
7066 | || b->type == bp_exception_master)) | |
0fd8e87f | 7067 | { |
06edf0c0 PA |
7068 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7069 | struct breakpoint *clone; | |
cc59ec59 | 7070 | |
e2e4d78b JK |
7071 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7072 | after their removal. */ | |
06edf0c0 | 7073 | clone = momentary_breakpoint_from_master (b, type, |
e2e4d78b | 7074 | &longjmp_breakpoint_ops); |
0fd8e87f UW |
7075 | clone->thread = thread; |
7076 | } | |
186c406b TT |
7077 | |
7078 | tp->initiating_frame = frame; | |
c906108c SS |
7079 | } |
7080 | ||
611c83ae | 7081 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7082 | void |
611c83ae | 7083 | delete_longjmp_breakpoint (int thread) |
c906108c | 7084 | { |
35df4500 | 7085 | struct breakpoint *b, *b_tmp; |
c906108c | 7086 | |
35df4500 | 7087 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 7088 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7089 | { |
7090 | if (b->thread == thread) | |
7091 | delete_breakpoint (b); | |
7092 | } | |
c906108c SS |
7093 | } |
7094 | ||
f59f708a PA |
7095 | void |
7096 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7097 | { | |
7098 | struct breakpoint *b, *b_tmp; | |
7099 | ||
7100 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7101 | if (b->type == bp_longjmp || b->type == bp_exception) | |
7102 | { | |
7103 | if (b->thread == thread) | |
7104 | b->disposition = disp_del_at_next_stop; | |
7105 | } | |
7106 | } | |
7107 | ||
e2e4d78b JK |
7108 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7109 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7110 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7111 | breakpoints. */ | |
7112 | ||
7113 | struct breakpoint * | |
7114 | set_longjmp_breakpoint_for_call_dummy (void) | |
7115 | { | |
7116 | struct breakpoint *b, *retval = NULL; | |
7117 | ||
7118 | ALL_BREAKPOINTS (b) | |
7119 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
7120 | { | |
7121 | struct breakpoint *new_b; | |
7122 | ||
7123 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
7124 | &momentary_breakpoint_ops); | |
7125 | new_b->thread = pid_to_thread_id (inferior_ptid); | |
7126 | ||
7127 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7128 | ||
7129 | gdb_assert (new_b->related_breakpoint == new_b); | |
7130 | if (retval == NULL) | |
7131 | retval = new_b; | |
7132 | new_b->related_breakpoint = retval; | |
7133 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7134 | retval = retval->related_breakpoint; | |
7135 | retval->related_breakpoint = new_b; | |
7136 | } | |
7137 | ||
7138 | return retval; | |
7139 | } | |
7140 | ||
7141 | /* Verify all existing dummy frames and their associated breakpoints for | |
7142 | THREAD. Remove those which can no longer be found in the current frame | |
7143 | stack. | |
7144 | ||
7145 | You should call this function only at places where it is safe to currently | |
7146 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7147 | frames. */ | |
7148 | ||
7149 | void | |
7150 | check_longjmp_breakpoint_for_call_dummy (int thread) | |
7151 | { | |
7152 | struct breakpoint *b, *b_tmp; | |
7153 | ||
7154 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7155 | if (b->type == bp_longjmp_call_dummy && b->thread == thread) | |
7156 | { | |
7157 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7158 | ||
7159 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7160 | dummy_b = dummy_b->related_breakpoint; | |
7161 | if (dummy_b->type != bp_call_dummy | |
7162 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7163 | continue; | |
7164 | ||
7165 | dummy_frame_discard (dummy_b->frame_id); | |
7166 | ||
7167 | while (b->related_breakpoint != b) | |
7168 | { | |
7169 | if (b_tmp == b->related_breakpoint) | |
7170 | b_tmp = b->related_breakpoint->next; | |
7171 | delete_breakpoint (b->related_breakpoint); | |
7172 | } | |
7173 | delete_breakpoint (b); | |
7174 | } | |
7175 | } | |
7176 | ||
1900040c MS |
7177 | void |
7178 | enable_overlay_breakpoints (void) | |
7179 | { | |
52f0bd74 | 7180 | struct breakpoint *b; |
1900040c MS |
7181 | |
7182 | ALL_BREAKPOINTS (b) | |
7183 | if (b->type == bp_overlay_event) | |
7184 | { | |
7185 | b->enable_state = bp_enabled; | |
b60e7edf | 7186 | update_global_location_list (1); |
c02f5703 | 7187 | overlay_events_enabled = 1; |
1900040c MS |
7188 | } |
7189 | } | |
7190 | ||
7191 | void | |
7192 | disable_overlay_breakpoints (void) | |
7193 | { | |
52f0bd74 | 7194 | struct breakpoint *b; |
1900040c MS |
7195 | |
7196 | ALL_BREAKPOINTS (b) | |
7197 | if (b->type == bp_overlay_event) | |
7198 | { | |
7199 | b->enable_state = bp_disabled; | |
b60e7edf | 7200 | update_global_location_list (0); |
c02f5703 | 7201 | overlay_events_enabled = 0; |
1900040c MS |
7202 | } |
7203 | } | |
7204 | ||
aa7d318d TT |
7205 | /* Set an active std::terminate breakpoint for each std::terminate |
7206 | master breakpoint. */ | |
7207 | void | |
7208 | set_std_terminate_breakpoint (void) | |
7209 | { | |
35df4500 | 7210 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7211 | |
35df4500 | 7212 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7213 | if (b->pspace == current_program_space |
7214 | && b->type == bp_std_terminate_master) | |
7215 | { | |
06edf0c0 PA |
7216 | momentary_breakpoint_from_master (b, bp_std_terminate, |
7217 | &momentary_breakpoint_ops); | |
aa7d318d TT |
7218 | } |
7219 | } | |
7220 | ||
7221 | /* Delete all the std::terminate breakpoints. */ | |
7222 | void | |
7223 | delete_std_terminate_breakpoint (void) | |
7224 | { | |
35df4500 | 7225 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7226 | |
35df4500 | 7227 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7228 | if (b->type == bp_std_terminate) |
7229 | delete_breakpoint (b); | |
7230 | } | |
7231 | ||
c4093a6a | 7232 | struct breakpoint * |
a6d9a66e | 7233 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7234 | { |
7235 | struct breakpoint *b; | |
c4093a6a | 7236 | |
06edf0c0 PA |
7237 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7238 | &internal_breakpoint_ops); | |
7239 | ||
b5de0fa7 | 7240 | b->enable_state = bp_enabled; |
c4093a6a | 7241 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5af949e3 UW |
7242 | b->addr_string |
7243 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
c4093a6a | 7244 | |
b60e7edf | 7245 | update_global_location_list_nothrow (1); |
74960c60 | 7246 | |
c4093a6a JM |
7247 | return b; |
7248 | } | |
7249 | ||
7250 | void | |
7251 | remove_thread_event_breakpoints (void) | |
7252 | { | |
35df4500 | 7253 | struct breakpoint *b, *b_tmp; |
c4093a6a | 7254 | |
35df4500 | 7255 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7256 | if (b->type == bp_thread_event |
7257 | && b->loc->pspace == current_program_space) | |
c4093a6a JM |
7258 | delete_breakpoint (b); |
7259 | } | |
7260 | ||
0101ce28 JJ |
7261 | struct lang_and_radix |
7262 | { | |
7263 | enum language lang; | |
7264 | int radix; | |
7265 | }; | |
7266 | ||
4efc6507 DE |
7267 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7268 | ||
7269 | struct breakpoint * | |
7270 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7271 | { | |
7272 | struct breakpoint *b; | |
7273 | ||
06edf0c0 PA |
7274 | b = create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7275 | &internal_breakpoint_ops); | |
4efc6507 DE |
7276 | update_global_location_list_nothrow (1); |
7277 | return b; | |
7278 | } | |
0101ce28 | 7279 | |
03673fc7 PP |
7280 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7281 | ||
7282 | void | |
7283 | remove_jit_event_breakpoints (void) | |
7284 | { | |
7285 | struct breakpoint *b, *b_tmp; | |
7286 | ||
7287 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7288 | if (b->type == bp_jit_event | |
7289 | && b->loc->pspace == current_program_space) | |
7290 | delete_breakpoint (b); | |
7291 | } | |
7292 | ||
cae688ec JJ |
7293 | void |
7294 | remove_solib_event_breakpoints (void) | |
7295 | { | |
35df4500 | 7296 | struct breakpoint *b, *b_tmp; |
cae688ec | 7297 | |
35df4500 | 7298 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7299 | if (b->type == bp_shlib_event |
7300 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7301 | delete_breakpoint (b); |
7302 | } | |
7303 | ||
7304 | struct breakpoint * | |
a6d9a66e | 7305 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
cae688ec JJ |
7306 | { |
7307 | struct breakpoint *b; | |
7308 | ||
06edf0c0 PA |
7309 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7310 | &internal_breakpoint_ops); | |
b60e7edf | 7311 | update_global_location_list_nothrow (1); |
cae688ec JJ |
7312 | return b; |
7313 | } | |
7314 | ||
7315 | /* Disable any breakpoints that are on code in shared libraries. Only | |
7316 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7317 | ||
7318 | void | |
cb851954 | 7319 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7320 | { |
876fa593 | 7321 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7322 | |
876fa593 | 7323 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7324 | { |
2bdf28a0 | 7325 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7326 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7327 | |
4a64f543 MS |
7328 | /* We apply the check to all breakpoints, including disabled for |
7329 | those with loc->duplicate set. This is so that when breakpoint | |
7330 | becomes enabled, or the duplicate is removed, gdb will try to | |
7331 | insert all breakpoints. If we don't set shlib_disabled here, | |
7332 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7333 | if (((b->type == bp_breakpoint) |
508ccb1f | 7334 | || (b->type == bp_jit_event) |
1042e4c0 | 7335 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7336 | || (is_tracepoint (b))) |
6c95b8df | 7337 | && loc->pspace == current_program_space |
0d381245 | 7338 | && !loc->shlib_disabled |
a77053c2 | 7339 | #ifdef PC_SOLIB |
0d381245 | 7340 | && PC_SOLIB (loc->address) |
a77053c2 | 7341 | #else |
6c95b8df | 7342 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 MK |
7343 | #endif |
7344 | ) | |
0d381245 VP |
7345 | { |
7346 | loc->shlib_disabled = 1; | |
7347 | } | |
cae688ec JJ |
7348 | } |
7349 | } | |
7350 | ||
1e4d1764 YQ |
7351 | /* Disable any breakpoints and tracepoints that are in an unloaded shared |
7352 | library. Only apply to enabled breakpoints, disabled ones can just stay | |
4a64f543 | 7353 | disabled. */ |
84acb35a | 7354 | |
75149521 | 7355 | static void |
84acb35a JJ |
7356 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7357 | { | |
876fa593 | 7358 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7359 | int disabled_shlib_breaks = 0; |
7360 | ||
c86cf029 VP |
7361 | /* SunOS a.out shared libraries are always mapped, so do not |
7362 | disable breakpoints; they will only be reported as unloaded | |
7363 | through clear_solib when GDB discards its shared library | |
7364 | list. See clear_solib for more information. */ | |
7365 | if (exec_bfd != NULL | |
7366 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
7367 | return; | |
7368 | ||
876fa593 | 7369 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7370 | { |
2bdf28a0 | 7371 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7372 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7373 | |
1e4d1764 | 7374 | if (solib->pspace == loc->pspace |
e2dd7057 | 7375 | && !loc->shlib_disabled |
1e4d1764 YQ |
7376 | && (((b->type == bp_breakpoint |
7377 | || b->type == bp_jit_event | |
7378 | || b->type == bp_hardware_breakpoint) | |
7379 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7380 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7381 | || is_tracepoint (b)) | |
e2dd7057 | 7382 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7383 | { |
e2dd7057 PP |
7384 | loc->shlib_disabled = 1; |
7385 | /* At this point, we cannot rely on remove_breakpoint | |
7386 | succeeding so we must mark the breakpoint as not inserted | |
7387 | to prevent future errors occurring in remove_breakpoints. */ | |
7388 | loc->inserted = 0; | |
8d3788bd VP |
7389 | |
7390 | /* This may cause duplicate notifications for the same breakpoint. */ | |
7391 | observer_notify_breakpoint_modified (b); | |
7392 | ||
e2dd7057 PP |
7393 | if (!disabled_shlib_breaks) |
7394 | { | |
7395 | target_terminal_ours_for_output (); | |
3e43a32a MS |
7396 | warning (_("Temporarily disabling breakpoints " |
7397 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7398 | solib->so_name); |
84acb35a | 7399 | } |
e2dd7057 | 7400 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7401 | } |
7402 | } | |
84acb35a JJ |
7403 | } |
7404 | ||
ce78b96d JB |
7405 | /* FORK & VFORK catchpoints. */ |
7406 | ||
e29a4733 PA |
7407 | /* An instance of this type is used to represent a fork or vfork |
7408 | catchpoint. It includes a "struct breakpoint" as a kind of base | |
7409 | class; users downcast to "struct breakpoint *" when needed. A | |
7410 | breakpoint is really of this type iff its ops pointer points to | |
7411 | CATCH_FORK_BREAKPOINT_OPS. */ | |
7412 | ||
7413 | struct fork_catchpoint | |
7414 | { | |
7415 | /* The base class. */ | |
7416 | struct breakpoint base; | |
7417 | ||
7418 | /* Process id of a child process whose forking triggered this | |
7419 | catchpoint. This field is only valid immediately after this | |
7420 | catchpoint has triggered. */ | |
7421 | ptid_t forked_inferior_pid; | |
7422 | }; | |
7423 | ||
4a64f543 MS |
7424 | /* Implement the "insert" breakpoint_ops method for fork |
7425 | catchpoints. */ | |
ce78b96d | 7426 | |
77b06cd7 TJB |
7427 | static int |
7428 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7429 | { |
77b06cd7 | 7430 | return target_insert_fork_catchpoint (PIDGET (inferior_ptid)); |
ce78b96d JB |
7431 | } |
7432 | ||
4a64f543 MS |
7433 | /* Implement the "remove" breakpoint_ops method for fork |
7434 | catchpoints. */ | |
ce78b96d JB |
7435 | |
7436 | static int | |
77b06cd7 | 7437 | remove_catch_fork (struct bp_location *bl) |
ce78b96d JB |
7438 | { |
7439 | return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); | |
7440 | } | |
7441 | ||
7442 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7443 | catchpoints. */ | |
7444 | ||
7445 | static int | |
f1310107 | 7446 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
09ac7c10 TT |
7447 | struct address_space *aspace, CORE_ADDR bp_addr, |
7448 | const struct target_waitstatus *ws) | |
ce78b96d | 7449 | { |
e29a4733 PA |
7450 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7451 | ||
f90263c1 TT |
7452 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7453 | return 0; | |
7454 | ||
7455 | c->forked_inferior_pid = ws->value.related_pid; | |
7456 | return 1; | |
ce78b96d JB |
7457 | } |
7458 | ||
4a64f543 MS |
7459 | /* Implement the "print_it" breakpoint_ops method for fork |
7460 | catchpoints. */ | |
ce78b96d JB |
7461 | |
7462 | static enum print_stop_action | |
348d480f | 7463 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7464 | { |
36dfb11c | 7465 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7466 | struct breakpoint *b = bs->breakpoint_at; |
7467 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7468 | |
ce78b96d | 7469 | annotate_catchpoint (b->number); |
36dfb11c TT |
7470 | if (b->disposition == disp_del) |
7471 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
7472 | else | |
7473 | ui_out_text (uiout, "\nCatchpoint "); | |
7474 | if (ui_out_is_mi_like_p (uiout)) | |
7475 | { | |
7476 | ui_out_field_string (uiout, "reason", | |
7477 | async_reason_lookup (EXEC_ASYNC_FORK)); | |
7478 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
7479 | } | |
7480 | ui_out_field_int (uiout, "bkptno", b->number); | |
7481 | ui_out_text (uiout, " (forked process "); | |
7482 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7483 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
7484 | return PRINT_SRC_AND_LOC; |
7485 | } | |
7486 | ||
4a64f543 MS |
7487 | /* Implement the "print_one" breakpoint_ops method for fork |
7488 | catchpoints. */ | |
ce78b96d JB |
7489 | |
7490 | static void | |
a6d9a66e | 7491 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7492 | { |
e29a4733 | 7493 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7494 | struct value_print_options opts; |
79a45e25 | 7495 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7496 | |
7497 | get_user_print_options (&opts); | |
7498 | ||
4a64f543 MS |
7499 | /* Field 4, the address, is omitted (which makes the columns not |
7500 | line up too nicely with the headers, but the effect is relatively | |
7501 | readable). */ | |
79a45b7d | 7502 | if (opts.addressprint) |
ce78b96d JB |
7503 | ui_out_field_skip (uiout, "addr"); |
7504 | annotate_field (5); | |
7505 | ui_out_text (uiout, "fork"); | |
e29a4733 | 7506 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
7507 | { |
7508 | ui_out_text (uiout, ", process "); | |
7509 | ui_out_field_int (uiout, "what", | |
e29a4733 | 7510 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
7511 | ui_out_spaces (uiout, 1); |
7512 | } | |
7513 | } | |
7514 | ||
7515 | /* Implement the "print_mention" breakpoint_ops method for fork | |
7516 | catchpoints. */ | |
7517 | ||
7518 | static void | |
7519 | print_mention_catch_fork (struct breakpoint *b) | |
7520 | { | |
7521 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
7522 | } | |
7523 | ||
6149aea9 PA |
7524 | /* Implement the "print_recreate" breakpoint_ops method for fork |
7525 | catchpoints. */ | |
7526 | ||
7527 | static void | |
7528 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
7529 | { | |
7530 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 7531 | print_recreate_thread (b, fp); |
6149aea9 PA |
7532 | } |
7533 | ||
ce78b96d JB |
7534 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
7535 | ||
2060206e | 7536 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 7537 | |
4a64f543 MS |
7538 | /* Implement the "insert" breakpoint_ops method for vfork |
7539 | catchpoints. */ | |
ce78b96d | 7540 | |
77b06cd7 TJB |
7541 | static int |
7542 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 7543 | { |
77b06cd7 | 7544 | return target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); |
ce78b96d JB |
7545 | } |
7546 | ||
4a64f543 MS |
7547 | /* Implement the "remove" breakpoint_ops method for vfork |
7548 | catchpoints. */ | |
ce78b96d JB |
7549 | |
7550 | static int | |
77b06cd7 | 7551 | remove_catch_vfork (struct bp_location *bl) |
ce78b96d JB |
7552 | { |
7553 | return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); | |
7554 | } | |
7555 | ||
7556 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
7557 | catchpoints. */ | |
7558 | ||
7559 | static int | |
f1310107 | 7560 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
09ac7c10 TT |
7561 | struct address_space *aspace, CORE_ADDR bp_addr, |
7562 | const struct target_waitstatus *ws) | |
ce78b96d | 7563 | { |
e29a4733 PA |
7564 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7565 | ||
f90263c1 TT |
7566 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
7567 | return 0; | |
7568 | ||
7569 | c->forked_inferior_pid = ws->value.related_pid; | |
7570 | return 1; | |
ce78b96d JB |
7571 | } |
7572 | ||
4a64f543 MS |
7573 | /* Implement the "print_it" breakpoint_ops method for vfork |
7574 | catchpoints. */ | |
ce78b96d JB |
7575 | |
7576 | static enum print_stop_action | |
348d480f | 7577 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 7578 | { |
36dfb11c | 7579 | struct ui_out *uiout = current_uiout; |
348d480f | 7580 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
7581 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
7582 | ||
ce78b96d | 7583 | annotate_catchpoint (b->number); |
36dfb11c TT |
7584 | if (b->disposition == disp_del) |
7585 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
7586 | else | |
7587 | ui_out_text (uiout, "\nCatchpoint "); | |
7588 | if (ui_out_is_mi_like_p (uiout)) | |
7589 | { | |
7590 | ui_out_field_string (uiout, "reason", | |
7591 | async_reason_lookup (EXEC_ASYNC_VFORK)); | |
7592 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
7593 | } | |
7594 | ui_out_field_int (uiout, "bkptno", b->number); | |
7595 | ui_out_text (uiout, " (vforked process "); | |
7596 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7597 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
7598 | return PRINT_SRC_AND_LOC; |
7599 | } | |
7600 | ||
4a64f543 MS |
7601 | /* Implement the "print_one" breakpoint_ops method for vfork |
7602 | catchpoints. */ | |
ce78b96d JB |
7603 | |
7604 | static void | |
a6d9a66e | 7605 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7606 | { |
e29a4733 | 7607 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7608 | struct value_print_options opts; |
79a45e25 | 7609 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7610 | |
7611 | get_user_print_options (&opts); | |
4a64f543 MS |
7612 | /* Field 4, the address, is omitted (which makes the columns not |
7613 | line up too nicely with the headers, but the effect is relatively | |
7614 | readable). */ | |
79a45b7d | 7615 | if (opts.addressprint) |
ce78b96d JB |
7616 | ui_out_field_skip (uiout, "addr"); |
7617 | annotate_field (5); | |
7618 | ui_out_text (uiout, "vfork"); | |
e29a4733 | 7619 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
7620 | { |
7621 | ui_out_text (uiout, ", process "); | |
7622 | ui_out_field_int (uiout, "what", | |
e29a4733 | 7623 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
7624 | ui_out_spaces (uiout, 1); |
7625 | } | |
7626 | } | |
7627 | ||
7628 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
7629 | catchpoints. */ | |
7630 | ||
7631 | static void | |
7632 | print_mention_catch_vfork (struct breakpoint *b) | |
7633 | { | |
7634 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
7635 | } | |
7636 | ||
6149aea9 PA |
7637 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
7638 | catchpoints. */ | |
7639 | ||
7640 | static void | |
7641 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
7642 | { | |
7643 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 7644 | print_recreate_thread (b, fp); |
6149aea9 PA |
7645 | } |
7646 | ||
ce78b96d JB |
7647 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
7648 | ||
2060206e | 7649 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 7650 | |
edcc5120 TT |
7651 | /* An instance of this type is used to represent an solib catchpoint. |
7652 | It includes a "struct breakpoint" as a kind of base class; users | |
7653 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
7654 | really of this type iff its ops pointer points to | |
7655 | CATCH_SOLIB_BREAKPOINT_OPS. */ | |
7656 | ||
7657 | struct solib_catchpoint | |
7658 | { | |
7659 | /* The base class. */ | |
7660 | struct breakpoint base; | |
7661 | ||
7662 | /* True for "catch load", false for "catch unload". */ | |
7663 | unsigned char is_load; | |
7664 | ||
7665 | /* Regular expression to match, if any. COMPILED is only valid when | |
7666 | REGEX is non-NULL. */ | |
7667 | char *regex; | |
7668 | regex_t compiled; | |
7669 | }; | |
7670 | ||
7671 | static void | |
7672 | dtor_catch_solib (struct breakpoint *b) | |
7673 | { | |
7674 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7675 | ||
7676 | if (self->regex) | |
7677 | regfree (&self->compiled); | |
7678 | xfree (self->regex); | |
7679 | ||
7680 | base_breakpoint_ops.dtor (b); | |
7681 | } | |
7682 | ||
7683 | static int | |
7684 | insert_catch_solib (struct bp_location *ignore) | |
7685 | { | |
7686 | return 0; | |
7687 | } | |
7688 | ||
7689 | static int | |
7690 | remove_catch_solib (struct bp_location *ignore) | |
7691 | { | |
7692 | return 0; | |
7693 | } | |
7694 | ||
7695 | static int | |
7696 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
7697 | struct address_space *aspace, | |
7698 | CORE_ADDR bp_addr, | |
7699 | const struct target_waitstatus *ws) | |
7700 | { | |
7701 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
7702 | struct breakpoint *other; | |
7703 | ||
7704 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
7705 | return 1; | |
7706 | ||
7707 | ALL_BREAKPOINTS (other) | |
7708 | { | |
7709 | struct bp_location *other_bl; | |
7710 | ||
7711 | if (other == bl->owner) | |
7712 | continue; | |
7713 | ||
7714 | if (other->type != bp_shlib_event) | |
7715 | continue; | |
7716 | ||
7717 | if (self->base.pspace != NULL && other->pspace != self->base.pspace) | |
7718 | continue; | |
7719 | ||
7720 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
7721 | { | |
7722 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
7723 | return 1; | |
7724 | } | |
7725 | } | |
7726 | ||
7727 | return 0; | |
7728 | } | |
7729 | ||
7730 | static void | |
7731 | check_status_catch_solib (struct bpstats *bs) | |
7732 | { | |
7733 | struct solib_catchpoint *self | |
7734 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
7735 | int ix; | |
7736 | ||
7737 | if (self->is_load) | |
7738 | { | |
7739 | struct so_list *iter; | |
7740 | ||
7741 | for (ix = 0; | |
7742 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
7743 | ix, iter); | |
7744 | ++ix) | |
7745 | { | |
7746 | if (!self->regex | |
7747 | || regexec (&self->compiled, iter->so_name, 0, NULL, 0) == 0) | |
7748 | return; | |
7749 | } | |
7750 | } | |
7751 | else | |
7752 | { | |
7753 | char *iter; | |
7754 | ||
7755 | for (ix = 0; | |
7756 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
7757 | ix, iter); | |
7758 | ++ix) | |
7759 | { | |
7760 | if (!self->regex | |
7761 | || regexec (&self->compiled, iter, 0, NULL, 0) == 0) | |
7762 | return; | |
7763 | } | |
7764 | } | |
7765 | ||
7766 | bs->stop = 0; | |
7767 | bs->print_it = print_it_noop; | |
7768 | } | |
7769 | ||
7770 | static enum print_stop_action | |
7771 | print_it_catch_solib (bpstat bs) | |
7772 | { | |
7773 | struct breakpoint *b = bs->breakpoint_at; | |
7774 | struct ui_out *uiout = current_uiout; | |
7775 | ||
7776 | annotate_catchpoint (b->number); | |
7777 | if (b->disposition == disp_del) | |
7778 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
7779 | else | |
7780 | ui_out_text (uiout, "\nCatchpoint "); | |
7781 | ui_out_field_int (uiout, "bkptno", b->number); | |
7782 | ui_out_text (uiout, "\n"); | |
7783 | if (ui_out_is_mi_like_p (uiout)) | |
7784 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
7785 | print_solib_event (1); | |
7786 | return PRINT_SRC_AND_LOC; | |
7787 | } | |
7788 | ||
7789 | static void | |
7790 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
7791 | { | |
7792 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7793 | struct value_print_options opts; | |
7794 | struct ui_out *uiout = current_uiout; | |
7795 | char *msg; | |
7796 | ||
7797 | get_user_print_options (&opts); | |
7798 | /* Field 4, the address, is omitted (which makes the columns not | |
7799 | line up too nicely with the headers, but the effect is relatively | |
7800 | readable). */ | |
7801 | if (opts.addressprint) | |
7802 | { | |
7803 | annotate_field (4); | |
7804 | ui_out_field_skip (uiout, "addr"); | |
7805 | } | |
7806 | ||
7807 | annotate_field (5); | |
7808 | if (self->is_load) | |
7809 | { | |
7810 | if (self->regex) | |
7811 | msg = xstrprintf (_("load of library matching %s"), self->regex); | |
7812 | else | |
7813 | msg = xstrdup (_("load of library")); | |
7814 | } | |
7815 | else | |
7816 | { | |
7817 | if (self->regex) | |
7818 | msg = xstrprintf (_("unload of library matching %s"), self->regex); | |
7819 | else | |
7820 | msg = xstrdup (_("unload of library")); | |
7821 | } | |
7822 | ui_out_field_string (uiout, "what", msg); | |
7823 | xfree (msg); | |
7824 | } | |
7825 | ||
7826 | static void | |
7827 | print_mention_catch_solib (struct breakpoint *b) | |
7828 | { | |
7829 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7830 | ||
7831 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
7832 | self->is_load ? "load" : "unload"); | |
7833 | } | |
7834 | ||
7835 | static void | |
7836 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
7837 | { | |
7838 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7839 | ||
7840 | fprintf_unfiltered (fp, "%s %s", | |
7841 | b->disposition == disp_del ? "tcatch" : "catch", | |
7842 | self->is_load ? "load" : "unload"); | |
7843 | if (self->regex) | |
7844 | fprintf_unfiltered (fp, " %s", self->regex); | |
7845 | fprintf_unfiltered (fp, "\n"); | |
7846 | } | |
7847 | ||
7848 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
7849 | ||
7850 | /* A helper function that does all the work for "catch load" and | |
7851 | "catch unload". */ | |
7852 | ||
7853 | static void | |
7854 | catch_load_or_unload (char *arg, int from_tty, int is_load, | |
7855 | struct cmd_list_element *command) | |
7856 | { | |
7857 | struct solib_catchpoint *c; | |
7858 | struct gdbarch *gdbarch = get_current_arch (); | |
7859 | int tempflag; | |
edcc5120 TT |
7860 | struct cleanup *cleanup; |
7861 | ||
7862 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
7863 | ||
7864 | if (!arg) | |
7865 | arg = ""; | |
7866 | arg = skip_spaces (arg); | |
7867 | ||
7868 | c = XCNEW (struct solib_catchpoint); | |
7869 | cleanup = make_cleanup (xfree, c); | |
7870 | ||
7871 | if (*arg != '\0') | |
7872 | { | |
7873 | int errcode; | |
7874 | ||
7875 | errcode = regcomp (&c->compiled, arg, REG_NOSUB); | |
7876 | if (errcode != 0) | |
7877 | { | |
7878 | char *err = get_regcomp_error (errcode, &c->compiled); | |
7879 | ||
7880 | make_cleanup (xfree, err); | |
7881 | error (_("Invalid regexp (%s): %s"), err, arg); | |
7882 | } | |
7883 | c->regex = xstrdup (arg); | |
7884 | } | |
7885 | ||
7886 | c->is_load = is_load; | |
7887 | init_catchpoint (&c->base, gdbarch, tempflag, NULL, | |
7888 | &catch_solib_breakpoint_ops); | |
7889 | ||
7890 | discard_cleanups (cleanup); | |
7891 | install_breakpoint (0, &c->base, 1); | |
7892 | } | |
7893 | ||
7894 | static void | |
7895 | catch_load_command_1 (char *arg, int from_tty, | |
7896 | struct cmd_list_element *command) | |
7897 | { | |
7898 | catch_load_or_unload (arg, from_tty, 1, command); | |
7899 | } | |
7900 | ||
7901 | static void | |
7902 | catch_unload_command_1 (char *arg, int from_tty, | |
7903 | struct cmd_list_element *command) | |
7904 | { | |
7905 | catch_load_or_unload (arg, from_tty, 0, command); | |
7906 | } | |
7907 | ||
fa3064dd YQ |
7908 | DEF_VEC_I(int); |
7909 | ||
be5c67c1 PA |
7910 | /* An instance of this type is used to represent a syscall catchpoint. |
7911 | It includes a "struct breakpoint" as a kind of base class; users | |
7912 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
7913 | really of this type iff its ops pointer points to | |
7914 | CATCH_SYSCALL_BREAKPOINT_OPS. */ | |
7915 | ||
7916 | struct syscall_catchpoint | |
7917 | { | |
7918 | /* The base class. */ | |
7919 | struct breakpoint base; | |
7920 | ||
7921 | /* Syscall numbers used for the 'catch syscall' feature. If no | |
7922 | syscall has been specified for filtering, its value is NULL. | |
7923 | Otherwise, it holds a list of all syscalls to be caught. The | |
7924 | list elements are allocated with xmalloc. */ | |
7925 | VEC(int) *syscalls_to_be_caught; | |
7926 | }; | |
7927 | ||
7928 | /* Implement the "dtor" breakpoint_ops method for syscall | |
7929 | catchpoints. */ | |
7930 | ||
7931 | static void | |
7932 | dtor_catch_syscall (struct breakpoint *b) | |
7933 | { | |
7934 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; | |
7935 | ||
7936 | VEC_free (int, c->syscalls_to_be_caught); | |
348d480f | 7937 | |
2060206e | 7938 | base_breakpoint_ops.dtor (b); |
be5c67c1 PA |
7939 | } |
7940 | ||
fa3064dd YQ |
7941 | static const struct inferior_data *catch_syscall_inferior_data = NULL; |
7942 | ||
7943 | struct catch_syscall_inferior_data | |
7944 | { | |
7945 | /* We keep a count of the number of times the user has requested a | |
7946 | particular syscall to be tracked, and pass this information to the | |
7947 | target. This lets capable targets implement filtering directly. */ | |
7948 | ||
7949 | /* Number of times that "any" syscall is requested. */ | |
7950 | int any_syscall_count; | |
7951 | ||
7952 | /* Count of each system call. */ | |
7953 | VEC(int) *syscalls_counts; | |
7954 | ||
7955 | /* This counts all syscall catch requests, so we can readily determine | |
7956 | if any catching is necessary. */ | |
7957 | int total_syscalls_count; | |
7958 | }; | |
7959 | ||
7960 | static struct catch_syscall_inferior_data* | |
7961 | get_catch_syscall_inferior_data (struct inferior *inf) | |
7962 | { | |
7963 | struct catch_syscall_inferior_data *inf_data; | |
7964 | ||
7965 | inf_data = inferior_data (inf, catch_syscall_inferior_data); | |
7966 | if (inf_data == NULL) | |
7967 | { | |
7968 | inf_data = XZALLOC (struct catch_syscall_inferior_data); | |
7969 | set_inferior_data (inf, catch_syscall_inferior_data, inf_data); | |
7970 | } | |
7971 | ||
7972 | return inf_data; | |
7973 | } | |
7974 | ||
7975 | static void | |
7976 | catch_syscall_inferior_data_cleanup (struct inferior *inf, void *arg) | |
7977 | { | |
7978 | xfree (arg); | |
7979 | } | |
7980 | ||
7981 | ||
a96d9b2e SDJ |
7982 | /* Implement the "insert" breakpoint_ops method for syscall |
7983 | catchpoints. */ | |
7984 | ||
77b06cd7 TJB |
7985 | static int |
7986 | insert_catch_syscall (struct bp_location *bl) | |
a96d9b2e | 7987 | { |
be5c67c1 | 7988 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner; |
a96d9b2e | 7989 | struct inferior *inf = current_inferior (); |
fa3064dd YQ |
7990 | struct catch_syscall_inferior_data *inf_data |
7991 | = get_catch_syscall_inferior_data (inf); | |
a96d9b2e | 7992 | |
fa3064dd | 7993 | ++inf_data->total_syscalls_count; |
be5c67c1 | 7994 | if (!c->syscalls_to_be_caught) |
fa3064dd | 7995 | ++inf_data->any_syscall_count; |
a96d9b2e SDJ |
7996 | else |
7997 | { | |
7998 | int i, iter; | |
cc59ec59 | 7999 | |
a96d9b2e | 8000 | for (i = 0; |
be5c67c1 | 8001 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8002 | i++) |
8003 | { | |
8004 | int elem; | |
cc59ec59 | 8005 | |
fa3064dd | 8006 | if (iter >= VEC_length (int, inf_data->syscalls_counts)) |
a96d9b2e | 8007 | { |
fa3064dd | 8008 | int old_size = VEC_length (int, inf_data->syscalls_counts); |
3e43a32a MS |
8009 | uintptr_t vec_addr_offset |
8010 | = old_size * ((uintptr_t) sizeof (int)); | |
a96d9b2e | 8011 | uintptr_t vec_addr; |
fa3064dd YQ |
8012 | VEC_safe_grow (int, inf_data->syscalls_counts, iter + 1); |
8013 | vec_addr = ((uintptr_t) VEC_address (int, | |
8014 | inf_data->syscalls_counts) | |
8015 | + vec_addr_offset); | |
a96d9b2e SDJ |
8016 | memset ((void *) vec_addr, 0, |
8017 | (iter + 1 - old_size) * sizeof (int)); | |
8018 | } | |
fa3064dd YQ |
8019 | elem = VEC_index (int, inf_data->syscalls_counts, iter); |
8020 | VEC_replace (int, inf_data->syscalls_counts, iter, ++elem); | |
a96d9b2e SDJ |
8021 | } |
8022 | } | |
8023 | ||
77b06cd7 | 8024 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), |
fa3064dd YQ |
8025 | inf_data->total_syscalls_count != 0, |
8026 | inf_data->any_syscall_count, | |
8027 | VEC_length (int, | |
8028 | inf_data->syscalls_counts), | |
8029 | VEC_address (int, | |
8030 | inf_data->syscalls_counts)); | |
a96d9b2e SDJ |
8031 | } |
8032 | ||
8033 | /* Implement the "remove" breakpoint_ops method for syscall | |
8034 | catchpoints. */ | |
8035 | ||
8036 | static int | |
77b06cd7 | 8037 | remove_catch_syscall (struct bp_location *bl) |
a96d9b2e | 8038 | { |
be5c67c1 | 8039 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner; |
a96d9b2e | 8040 | struct inferior *inf = current_inferior (); |
fa3064dd YQ |
8041 | struct catch_syscall_inferior_data *inf_data |
8042 | = get_catch_syscall_inferior_data (inf); | |
a96d9b2e | 8043 | |
fa3064dd | 8044 | --inf_data->total_syscalls_count; |
be5c67c1 | 8045 | if (!c->syscalls_to_be_caught) |
fa3064dd | 8046 | --inf_data->any_syscall_count; |
a96d9b2e SDJ |
8047 | else |
8048 | { | |
8049 | int i, iter; | |
cc59ec59 | 8050 | |
a96d9b2e | 8051 | for (i = 0; |
be5c67c1 | 8052 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8053 | i++) |
8054 | { | |
8055 | int elem; | |
fa3064dd | 8056 | if (iter >= VEC_length (int, inf_data->syscalls_counts)) |
a96d9b2e SDJ |
8057 | /* Shouldn't happen. */ |
8058 | continue; | |
fa3064dd YQ |
8059 | elem = VEC_index (int, inf_data->syscalls_counts, iter); |
8060 | VEC_replace (int, inf_data->syscalls_counts, iter, --elem); | |
a96d9b2e SDJ |
8061 | } |
8062 | } | |
8063 | ||
8064 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
fa3064dd YQ |
8065 | inf_data->total_syscalls_count != 0, |
8066 | inf_data->any_syscall_count, | |
8067 | VEC_length (int, | |
8068 | inf_data->syscalls_counts), | |
3e43a32a | 8069 | VEC_address (int, |
fa3064dd | 8070 | inf_data->syscalls_counts)); |
a96d9b2e SDJ |
8071 | } |
8072 | ||
8073 | /* Implement the "breakpoint_hit" breakpoint_ops method for syscall | |
8074 | catchpoints. */ | |
8075 | ||
8076 | static int | |
f1310107 | 8077 | breakpoint_hit_catch_syscall (const struct bp_location *bl, |
09ac7c10 TT |
8078 | struct address_space *aspace, CORE_ADDR bp_addr, |
8079 | const struct target_waitstatus *ws) | |
a96d9b2e | 8080 | { |
4a64f543 MS |
8081 | /* We must check if we are catching specific syscalls in this |
8082 | breakpoint. If we are, then we must guarantee that the called | |
8083 | syscall is the same syscall we are catching. */ | |
a96d9b2e | 8084 | int syscall_number = 0; |
be5c67c1 PA |
8085 | const struct syscall_catchpoint *c |
8086 | = (const struct syscall_catchpoint *) bl->owner; | |
a96d9b2e | 8087 | |
f90263c1 TT |
8088 | if (ws->kind != TARGET_WAITKIND_SYSCALL_ENTRY |
8089 | && ws->kind != TARGET_WAITKIND_SYSCALL_RETURN) | |
a96d9b2e SDJ |
8090 | return 0; |
8091 | ||
f90263c1 TT |
8092 | syscall_number = ws->value.syscall_number; |
8093 | ||
a96d9b2e | 8094 | /* Now, checking if the syscall is the same. */ |
be5c67c1 | 8095 | if (c->syscalls_to_be_caught) |
a96d9b2e SDJ |
8096 | { |
8097 | int i, iter; | |
cc59ec59 | 8098 | |
a96d9b2e | 8099 | for (i = 0; |
be5c67c1 | 8100 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8101 | i++) |
8102 | if (syscall_number == iter) | |
8103 | break; | |
8104 | /* Not the same. */ | |
8105 | if (!iter) | |
8106 | return 0; | |
8107 | } | |
8108 | ||
8109 | return 1; | |
8110 | } | |
8111 | ||
8112 | /* Implement the "print_it" breakpoint_ops method for syscall | |
8113 | catchpoints. */ | |
8114 | ||
8115 | static enum print_stop_action | |
348d480f | 8116 | print_it_catch_syscall (bpstat bs) |
a96d9b2e | 8117 | { |
36dfb11c | 8118 | struct ui_out *uiout = current_uiout; |
348d480f | 8119 | struct breakpoint *b = bs->breakpoint_at; |
a96d9b2e SDJ |
8120 | /* These are needed because we want to know in which state a |
8121 | syscall is. It can be in the TARGET_WAITKIND_SYSCALL_ENTRY | |
8122 | or TARGET_WAITKIND_SYSCALL_RETURN, and depending on it we | |
8123 | must print "called syscall" or "returned from syscall". */ | |
8124 | ptid_t ptid; | |
8125 | struct target_waitstatus last; | |
8126 | struct syscall s; | |
a96d9b2e SDJ |
8127 | |
8128 | get_last_target_status (&ptid, &last); | |
8129 | ||
8130 | get_syscall_by_number (last.value.syscall_number, &s); | |
8131 | ||
8132 | annotate_catchpoint (b->number); | |
8133 | ||
36dfb11c TT |
8134 | if (b->disposition == disp_del) |
8135 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
a96d9b2e | 8136 | else |
36dfb11c TT |
8137 | ui_out_text (uiout, "\nCatchpoint "); |
8138 | if (ui_out_is_mi_like_p (uiout)) | |
8139 | { | |
8140 | ui_out_field_string (uiout, "reason", | |
8141 | async_reason_lookup (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY | |
8142 | ? EXEC_ASYNC_SYSCALL_ENTRY | |
8143 | : EXEC_ASYNC_SYSCALL_RETURN)); | |
8144 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8145 | } | |
8146 | ui_out_field_int (uiout, "bkptno", b->number); | |
a96d9b2e SDJ |
8147 | |
8148 | if (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY) | |
36dfb11c TT |
8149 | ui_out_text (uiout, " (call to syscall "); |
8150 | else | |
8151 | ui_out_text (uiout, " (returned from syscall "); | |
a96d9b2e | 8152 | |
36dfb11c TT |
8153 | if (s.name == NULL || ui_out_is_mi_like_p (uiout)) |
8154 | ui_out_field_int (uiout, "syscall-number", last.value.syscall_number); | |
8155 | if (s.name != NULL) | |
8156 | ui_out_field_string (uiout, "syscall-name", s.name); | |
8157 | ||
8158 | ui_out_text (uiout, "), "); | |
a96d9b2e SDJ |
8159 | |
8160 | return PRINT_SRC_AND_LOC; | |
8161 | } | |
8162 | ||
8163 | /* Implement the "print_one" breakpoint_ops method for syscall | |
8164 | catchpoints. */ | |
8165 | ||
8166 | static void | |
8167 | print_one_catch_syscall (struct breakpoint *b, | |
f1310107 | 8168 | struct bp_location **last_loc) |
a96d9b2e | 8169 | { |
be5c67c1 | 8170 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
a96d9b2e | 8171 | struct value_print_options opts; |
79a45e25 | 8172 | struct ui_out *uiout = current_uiout; |
a96d9b2e SDJ |
8173 | |
8174 | get_user_print_options (&opts); | |
4a64f543 MS |
8175 | /* Field 4, the address, is omitted (which makes the columns not |
8176 | line up too nicely with the headers, but the effect is relatively | |
8177 | readable). */ | |
a96d9b2e SDJ |
8178 | if (opts.addressprint) |
8179 | ui_out_field_skip (uiout, "addr"); | |
8180 | annotate_field (5); | |
8181 | ||
be5c67c1 PA |
8182 | if (c->syscalls_to_be_caught |
8183 | && VEC_length (int, c->syscalls_to_be_caught) > 1) | |
a96d9b2e SDJ |
8184 | ui_out_text (uiout, "syscalls \""); |
8185 | else | |
8186 | ui_out_text (uiout, "syscall \""); | |
8187 | ||
be5c67c1 | 8188 | if (c->syscalls_to_be_caught) |
a96d9b2e SDJ |
8189 | { |
8190 | int i, iter; | |
8191 | char *text = xstrprintf ("%s", ""); | |
cc59ec59 | 8192 | |
a96d9b2e | 8193 | for (i = 0; |
be5c67c1 | 8194 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8195 | i++) |
8196 | { | |
8197 | char *x = text; | |
8198 | struct syscall s; | |
8199 | get_syscall_by_number (iter, &s); | |
8200 | ||
8201 | if (s.name != NULL) | |
8202 | text = xstrprintf ("%s%s, ", text, s.name); | |
8203 | else | |
8204 | text = xstrprintf ("%s%d, ", text, iter); | |
8205 | ||
8206 | /* We have to xfree the last 'text' (now stored at 'x') | |
e5dd4106 | 8207 | because xstrprintf dynamically allocates new space for it |
a96d9b2e SDJ |
8208 | on every call. */ |
8209 | xfree (x); | |
8210 | } | |
8211 | /* Remove the last comma. */ | |
8212 | text[strlen (text) - 2] = '\0'; | |
8213 | ui_out_field_string (uiout, "what", text); | |
8214 | } | |
8215 | else | |
8216 | ui_out_field_string (uiout, "what", "<any syscall>"); | |
8217 | ui_out_text (uiout, "\" "); | |
8218 | } | |
8219 | ||
8220 | /* Implement the "print_mention" breakpoint_ops method for syscall | |
8221 | catchpoints. */ | |
8222 | ||
8223 | static void | |
8224 | print_mention_catch_syscall (struct breakpoint *b) | |
8225 | { | |
be5c67c1 PA |
8226 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
8227 | ||
8228 | if (c->syscalls_to_be_caught) | |
a96d9b2e SDJ |
8229 | { |
8230 | int i, iter; | |
8231 | ||
be5c67c1 | 8232 | if (VEC_length (int, c->syscalls_to_be_caught) > 1) |
a96d9b2e SDJ |
8233 | printf_filtered (_("Catchpoint %d (syscalls"), b->number); |
8234 | else | |
8235 | printf_filtered (_("Catchpoint %d (syscall"), b->number); | |
8236 | ||
8237 | for (i = 0; | |
be5c67c1 | 8238 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8239 | i++) |
8240 | { | |
8241 | struct syscall s; | |
8242 | get_syscall_by_number (iter, &s); | |
8243 | ||
8244 | if (s.name) | |
8245 | printf_filtered (" '%s' [%d]", s.name, s.number); | |
8246 | else | |
8247 | printf_filtered (" %d", s.number); | |
8248 | } | |
8249 | printf_filtered (")"); | |
8250 | } | |
8251 | else | |
8252 | printf_filtered (_("Catchpoint %d (any syscall)"), | |
8253 | b->number); | |
8254 | } | |
8255 | ||
6149aea9 PA |
8256 | /* Implement the "print_recreate" breakpoint_ops method for syscall |
8257 | catchpoints. */ | |
8258 | ||
8259 | static void | |
8260 | print_recreate_catch_syscall (struct breakpoint *b, struct ui_file *fp) | |
8261 | { | |
be5c67c1 PA |
8262 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
8263 | ||
6149aea9 PA |
8264 | fprintf_unfiltered (fp, "catch syscall"); |
8265 | ||
be5c67c1 | 8266 | if (c->syscalls_to_be_caught) |
6149aea9 PA |
8267 | { |
8268 | int i, iter; | |
8269 | ||
8270 | for (i = 0; | |
be5c67c1 | 8271 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
6149aea9 PA |
8272 | i++) |
8273 | { | |
8274 | struct syscall s; | |
8275 | ||
8276 | get_syscall_by_number (iter, &s); | |
8277 | if (s.name) | |
8278 | fprintf_unfiltered (fp, " %s", s.name); | |
8279 | else | |
8280 | fprintf_unfiltered (fp, " %d", s.number); | |
8281 | } | |
8282 | } | |
d9b3f62e | 8283 | print_recreate_thread (b, fp); |
6149aea9 PA |
8284 | } |
8285 | ||
a96d9b2e SDJ |
8286 | /* The breakpoint_ops structure to be used in syscall catchpoints. */ |
8287 | ||
2060206e | 8288 | static struct breakpoint_ops catch_syscall_breakpoint_ops; |
a96d9b2e SDJ |
8289 | |
8290 | /* Returns non-zero if 'b' is a syscall catchpoint. */ | |
8291 | ||
8292 | static int | |
8293 | syscall_catchpoint_p (struct breakpoint *b) | |
8294 | { | |
8295 | return (b->ops == &catch_syscall_breakpoint_ops); | |
8296 | } | |
8297 | ||
346774a9 PA |
8298 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
8299 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
8300 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
8301 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 8302 | |
346774a9 PA |
8303 | static void |
8304 | init_catchpoint (struct breakpoint *b, | |
8305 | struct gdbarch *gdbarch, int tempflag, | |
8306 | char *cond_string, | |
c0a91b2b | 8307 | const struct breakpoint_ops *ops) |
c906108c | 8308 | { |
c5aa993b | 8309 | struct symtab_and_line sal; |
346774a9 | 8310 | |
fe39c653 | 8311 | init_sal (&sal); |
6c95b8df | 8312 | sal.pspace = current_program_space; |
c5aa993b | 8313 | |
28010a5d | 8314 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8315 | |
1b36a34b | 8316 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 8317 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
8318 | } |
8319 | ||
28010a5d | 8320 | void |
3ea46bff | 8321 | install_breakpoint (int internal, struct breakpoint *b, int update_gll) |
c56053d2 PA |
8322 | { |
8323 | add_to_breakpoint_chain (b); | |
3a5c3e22 | 8324 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8325 | if (is_tracepoint (b)) |
8326 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8327 | if (!internal) |
8328 | mention (b); | |
c56053d2 | 8329 | observer_notify_breakpoint_created (b); |
3ea46bff YQ |
8330 | |
8331 | if (update_gll) | |
8332 | update_global_location_list (1); | |
c56053d2 PA |
8333 | } |
8334 | ||
9b70b993 | 8335 | static void |
a6d9a66e UW |
8336 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
8337 | int tempflag, char *cond_string, | |
c0a91b2b | 8338 | const struct breakpoint_ops *ops) |
c906108c | 8339 | { |
e29a4733 | 8340 | struct fork_catchpoint *c = XNEW (struct fork_catchpoint); |
ce78b96d | 8341 | |
e29a4733 PA |
8342 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, ops); |
8343 | ||
8344 | c->forked_inferior_pid = null_ptid; | |
8345 | ||
3ea46bff | 8346 | install_breakpoint (0, &c->base, 1); |
c906108c SS |
8347 | } |
8348 | ||
fe798b75 JB |
8349 | /* Exec catchpoints. */ |
8350 | ||
b4d90040 PA |
8351 | /* An instance of this type is used to represent an exec catchpoint. |
8352 | It includes a "struct breakpoint" as a kind of base class; users | |
8353 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
8354 | really of this type iff its ops pointer points to | |
8355 | CATCH_EXEC_BREAKPOINT_OPS. */ | |
8356 | ||
8357 | struct exec_catchpoint | |
8358 | { | |
8359 | /* The base class. */ | |
8360 | struct breakpoint base; | |
8361 | ||
8362 | /* Filename of a program whose exec triggered this catchpoint. | |
8363 | This field is only valid immediately after this catchpoint has | |
8364 | triggered. */ | |
8365 | char *exec_pathname; | |
8366 | }; | |
8367 | ||
8368 | /* Implement the "dtor" breakpoint_ops method for exec | |
8369 | catchpoints. */ | |
8370 | ||
8371 | static void | |
8372 | dtor_catch_exec (struct breakpoint *b) | |
8373 | { | |
8374 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; | |
8375 | ||
8376 | xfree (c->exec_pathname); | |
348d480f | 8377 | |
2060206e | 8378 | base_breakpoint_ops.dtor (b); |
b4d90040 PA |
8379 | } |
8380 | ||
77b06cd7 TJB |
8381 | static int |
8382 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8383 | { |
77b06cd7 | 8384 | return target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
fe798b75 | 8385 | } |
c906108c | 8386 | |
fe798b75 | 8387 | static int |
77b06cd7 | 8388 | remove_catch_exec (struct bp_location *bl) |
fe798b75 JB |
8389 | { |
8390 | return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); | |
8391 | } | |
c906108c | 8392 | |
fe798b75 | 8393 | static int |
f1310107 | 8394 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
09ac7c10 TT |
8395 | struct address_space *aspace, CORE_ADDR bp_addr, |
8396 | const struct target_waitstatus *ws) | |
fe798b75 | 8397 | { |
b4d90040 PA |
8398 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8399 | ||
f90263c1 TT |
8400 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8401 | return 0; | |
8402 | ||
8403 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8404 | return 1; | |
fe798b75 | 8405 | } |
c906108c | 8406 | |
fe798b75 | 8407 | static enum print_stop_action |
348d480f | 8408 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8409 | { |
36dfb11c | 8410 | struct ui_out *uiout = current_uiout; |
348d480f | 8411 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8412 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8413 | ||
fe798b75 | 8414 | annotate_catchpoint (b->number); |
36dfb11c TT |
8415 | if (b->disposition == disp_del) |
8416 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
8417 | else | |
8418 | ui_out_text (uiout, "\nCatchpoint "); | |
8419 | if (ui_out_is_mi_like_p (uiout)) | |
8420 | { | |
8421 | ui_out_field_string (uiout, "reason", | |
8422 | async_reason_lookup (EXEC_ASYNC_EXEC)); | |
8423 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8424 | } | |
8425 | ui_out_field_int (uiout, "bkptno", b->number); | |
8426 | ui_out_text (uiout, " (exec'd "); | |
8427 | ui_out_field_string (uiout, "new-exec", c->exec_pathname); | |
8428 | ui_out_text (uiout, "), "); | |
8429 | ||
fe798b75 | 8430 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8431 | } |
8432 | ||
fe798b75 | 8433 | static void |
a6d9a66e | 8434 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8435 | { |
b4d90040 | 8436 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8437 | struct value_print_options opts; |
79a45e25 | 8438 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8439 | |
8440 | get_user_print_options (&opts); | |
8441 | ||
8442 | /* Field 4, the address, is omitted (which makes the columns | |
8443 | not line up too nicely with the headers, but the effect | |
8444 | is relatively readable). */ | |
8445 | if (opts.addressprint) | |
8446 | ui_out_field_skip (uiout, "addr"); | |
8447 | annotate_field (5); | |
8448 | ui_out_text (uiout, "exec"); | |
b4d90040 | 8449 | if (c->exec_pathname != NULL) |
fe798b75 JB |
8450 | { |
8451 | ui_out_text (uiout, ", program \""); | |
b4d90040 | 8452 | ui_out_field_string (uiout, "what", c->exec_pathname); |
fe798b75 JB |
8453 | ui_out_text (uiout, "\" "); |
8454 | } | |
8455 | } | |
8456 | ||
8457 | static void | |
8458 | print_mention_catch_exec (struct breakpoint *b) | |
8459 | { | |
8460 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8461 | } | |
8462 | ||
6149aea9 PA |
8463 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8464 | catchpoints. */ | |
8465 | ||
8466 | static void | |
8467 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8468 | { | |
8469 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8470 | print_recreate_thread (b, fp); |
6149aea9 PA |
8471 | } |
8472 | ||
2060206e | 8473 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8474 | |
a96d9b2e SDJ |
8475 | static void |
8476 | create_syscall_event_catchpoint (int tempflag, VEC(int) *filter, | |
c0a91b2b | 8477 | const struct breakpoint_ops *ops) |
a96d9b2e | 8478 | { |
be5c67c1 | 8479 | struct syscall_catchpoint *c; |
a96d9b2e | 8480 | struct gdbarch *gdbarch = get_current_arch (); |
a96d9b2e | 8481 | |
be5c67c1 PA |
8482 | c = XNEW (struct syscall_catchpoint); |
8483 | init_catchpoint (&c->base, gdbarch, tempflag, NULL, ops); | |
8484 | c->syscalls_to_be_caught = filter; | |
a96d9b2e | 8485 | |
3ea46bff | 8486 | install_breakpoint (0, &c->base, 1); |
a96d9b2e SDJ |
8487 | } |
8488 | ||
c906108c | 8489 | static int |
fba45db2 | 8490 | hw_breakpoint_used_count (void) |
c906108c | 8491 | { |
c906108c | 8492 | int i = 0; |
f1310107 TJB |
8493 | struct breakpoint *b; |
8494 | struct bp_location *bl; | |
c906108c SS |
8495 | |
8496 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8497 | { |
d6b74ac4 | 8498 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8499 | for (bl = b->loc; bl; bl = bl->next) |
8500 | { | |
8501 | /* Special types of hardware breakpoints may use more than | |
8502 | one register. */ | |
348d480f | 8503 | i += b->ops->resources_needed (bl); |
f1310107 | 8504 | } |
c5aa993b | 8505 | } |
c906108c SS |
8506 | |
8507 | return i; | |
8508 | } | |
8509 | ||
a1398e0c PA |
8510 | /* Returns the resources B would use if it were a hardware |
8511 | watchpoint. */ | |
8512 | ||
c906108c | 8513 | static int |
a1398e0c | 8514 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8515 | { |
c906108c | 8516 | int i = 0; |
e09342b5 | 8517 | struct bp_location *bl; |
c906108c | 8518 | |
a1398e0c PA |
8519 | if (!breakpoint_enabled (b)) |
8520 | return 0; | |
8521 | ||
8522 | for (bl = b->loc; bl; bl = bl->next) | |
8523 | { | |
8524 | /* Special types of hardware watchpoints may use more than | |
8525 | one register. */ | |
8526 | i += b->ops->resources_needed (bl); | |
8527 | } | |
8528 | ||
8529 | return i; | |
8530 | } | |
8531 | ||
8532 | /* Returns the sum the used resources of all hardware watchpoints of | |
8533 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8534 | the sum of the used resources of all hardware watchpoints of other | |
8535 | types _not_ TYPE. */ | |
8536 | ||
8537 | static int | |
8538 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8539 | enum bptype type, int *other_type_used) | |
8540 | { | |
8541 | int i = 0; | |
8542 | struct breakpoint *b; | |
8543 | ||
c906108c SS |
8544 | *other_type_used = 0; |
8545 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8546 | { |
a1398e0c PA |
8547 | if (b == except) |
8548 | continue; | |
e09342b5 TJB |
8549 | if (!breakpoint_enabled (b)) |
8550 | continue; | |
8551 | ||
a1398e0c PA |
8552 | if (b->type == type) |
8553 | i += hw_watchpoint_use_count (b); | |
8554 | else if (is_hardware_watchpoint (b)) | |
8555 | *other_type_used = 1; | |
e09342b5 TJB |
8556 | } |
8557 | ||
c906108c SS |
8558 | return i; |
8559 | } | |
8560 | ||
c906108c | 8561 | void |
fba45db2 | 8562 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8563 | { |
c5aa993b | 8564 | struct breakpoint *b; |
c906108c SS |
8565 | |
8566 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8567 | { |
cc60f2e3 | 8568 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8569 | { |
b5de0fa7 | 8570 | b->enable_state = bp_call_disabled; |
b60e7edf | 8571 | update_global_location_list (0); |
c5aa993b JM |
8572 | } |
8573 | } | |
c906108c SS |
8574 | } |
8575 | ||
8576 | void | |
fba45db2 | 8577 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8578 | { |
c5aa993b | 8579 | struct breakpoint *b; |
c906108c SS |
8580 | |
8581 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8582 | { |
cc60f2e3 | 8583 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8584 | { |
b5de0fa7 | 8585 | b->enable_state = bp_enabled; |
b60e7edf | 8586 | update_global_location_list (1); |
c5aa993b JM |
8587 | } |
8588 | } | |
c906108c SS |
8589 | } |
8590 | ||
8bea4e01 UW |
8591 | void |
8592 | disable_breakpoints_before_startup (void) | |
8593 | { | |
6c95b8df | 8594 | current_program_space->executing_startup = 1; |
f8eba3c6 | 8595 | update_global_location_list (0); |
8bea4e01 UW |
8596 | } |
8597 | ||
8598 | void | |
8599 | enable_breakpoints_after_startup (void) | |
8600 | { | |
6c95b8df | 8601 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8602 | breakpoint_re_set (); |
8bea4e01 UW |
8603 | } |
8604 | ||
c906108c SS |
8605 | |
8606 | /* Set a breakpoint that will evaporate an end of command | |
8607 | at address specified by SAL. | |
8608 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
8609 | ||
8610 | struct breakpoint * | |
a6d9a66e UW |
8611 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8612 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8613 | { |
52f0bd74 | 8614 | struct breakpoint *b; |
edb3359d | 8615 | |
193facb3 JK |
8616 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8617 | tail-called one. */ | |
8618 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8619 | |
06edf0c0 | 8620 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8621 | b->enable_state = bp_enabled; |
8622 | b->disposition = disp_donttouch; | |
818dd999 | 8623 | b->frame_id = frame_id; |
c906108c | 8624 | |
4a64f543 MS |
8625 | /* If we're debugging a multi-threaded program, then we want |
8626 | momentary breakpoints to be active in only a single thread of | |
8627 | control. */ | |
39f77062 KB |
8628 | if (in_thread_list (inferior_ptid)) |
8629 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 8630 | |
b60e7edf | 8631 | update_global_location_list_nothrow (1); |
74960c60 | 8632 | |
c906108c SS |
8633 | return b; |
8634 | } | |
611c83ae | 8635 | |
06edf0c0 PA |
8636 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
8637 | The new breakpoint will have type TYPE, and use OPS as it | |
8638 | breakpoint_ops. */ | |
e58b0e63 | 8639 | |
06edf0c0 PA |
8640 | static struct breakpoint * |
8641 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8642 | enum bptype type, | |
c0a91b2b | 8643 | const struct breakpoint_ops *ops) |
e58b0e63 PA |
8644 | { |
8645 | struct breakpoint *copy; | |
8646 | ||
06edf0c0 | 8647 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8648 | copy->loc = allocate_bp_location (copy); |
0e30163f | 8649 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 8650 | |
a6d9a66e | 8651 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8652 | copy->loc->requested_address = orig->loc->requested_address; |
8653 | copy->loc->address = orig->loc->address; | |
8654 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8655 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8656 | copy->loc->probe = orig->loc->probe; |
e58b0e63 | 8657 | |
f8eba3c6 TT |
8658 | if (orig->loc->source_file != NULL) |
8659 | copy->loc->source_file = xstrdup (orig->loc->source_file); | |
e58b0e63 | 8660 | |
f8eba3c6 | 8661 | copy->loc->line_number = orig->loc->line_number; |
e58b0e63 PA |
8662 | copy->frame_id = orig->frame_id; |
8663 | copy->thread = orig->thread; | |
6c95b8df | 8664 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8665 | |
8666 | copy->enable_state = bp_enabled; | |
8667 | copy->disposition = disp_donttouch; | |
8668 | copy->number = internal_breakpoint_number--; | |
8669 | ||
8670 | update_global_location_list_nothrow (0); | |
8671 | return copy; | |
8672 | } | |
8673 | ||
06edf0c0 PA |
8674 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8675 | ORIG is NULL. */ | |
8676 | ||
8677 | struct breakpoint * | |
8678 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8679 | { | |
8680 | /* If there's nothing to clone, then return nothing. */ | |
8681 | if (orig == NULL) | |
8682 | return NULL; | |
8683 | ||
8684 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops); | |
8685 | } | |
8686 | ||
611c83ae | 8687 | struct breakpoint * |
a6d9a66e UW |
8688 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8689 | enum bptype type) | |
611c83ae PA |
8690 | { |
8691 | struct symtab_and_line sal; | |
8692 | ||
8693 | sal = find_pc_line (pc, 0); | |
8694 | sal.pc = pc; | |
8695 | sal.section = find_pc_overlay (pc); | |
8696 | sal.explicit_pc = 1; | |
8697 | ||
a6d9a66e | 8698 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8699 | } |
c906108c | 8700 | \f |
c5aa993b | 8701 | |
c906108c SS |
8702 | /* Tell the user we have just set a breakpoint B. */ |
8703 | ||
8704 | static void | |
fba45db2 | 8705 | mention (struct breakpoint *b) |
c906108c | 8706 | { |
348d480f | 8707 | b->ops->print_mention (b); |
79a45e25 | 8708 | if (ui_out_is_mi_like_p (current_uiout)) |
fb40c209 | 8709 | return; |
c906108c SS |
8710 | printf_filtered ("\n"); |
8711 | } | |
c906108c | 8712 | \f |
c5aa993b | 8713 | |
0d381245 | 8714 | static struct bp_location * |
39d61571 | 8715 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8716 | const struct symtab_and_line *sal) |
8717 | { | |
8718 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8719 | CORE_ADDR adjusted_address; |
8720 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8721 | ||
8722 | if (loc_gdbarch == NULL) | |
8723 | loc_gdbarch = b->gdbarch; | |
8724 | ||
8725 | /* Adjust the breakpoint's address prior to allocating a location. | |
8726 | Once we call allocate_bp_location(), that mostly uninitialized | |
8727 | location will be placed on the location chain. Adjustment of the | |
8728 | breakpoint may cause target_read_memory() to be called and we do | |
8729 | not want its scan of the location chain to find a breakpoint and | |
8730 | location that's only been partially initialized. */ | |
8731 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8732 | sal->pc, b->type); | |
0d381245 | 8733 | |
39d61571 | 8734 | loc = allocate_bp_location (b); |
0d381245 VP |
8735 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
8736 | ; | |
8737 | *tmp = loc; | |
3742cc8b | 8738 | |
0d381245 | 8739 | loc->requested_address = sal->pc; |
3742cc8b | 8740 | loc->address = adjusted_address; |
6c95b8df | 8741 | loc->pspace = sal->pspace; |
55aa24fb | 8742 | loc->probe = sal->probe; |
6c95b8df | 8743 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8744 | loc->section = sal->section; |
3742cc8b | 8745 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 TT |
8746 | |
8747 | if (sal->symtab != NULL) | |
8748 | loc->source_file = xstrdup (sal->symtab->filename); | |
8749 | loc->line_number = sal->line; | |
8750 | ||
0e30163f JK |
8751 | set_breakpoint_location_function (loc, |
8752 | sal->explicit_pc || sal->explicit_line); | |
0d381245 VP |
8753 | return loc; |
8754 | } | |
514f746b AR |
8755 | \f |
8756 | ||
8757 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
8758 | return 0 otherwise. */ | |
8759 | ||
8760 | static int | |
8761 | bp_loc_is_permanent (struct bp_location *loc) | |
8762 | { | |
8763 | int len; | |
8764 | CORE_ADDR addr; | |
1afeeb75 | 8765 | const gdb_byte *bpoint; |
514f746b | 8766 | gdb_byte *target_mem; |
939c61fa JK |
8767 | struct cleanup *cleanup; |
8768 | int retval = 0; | |
514f746b AR |
8769 | |
8770 | gdb_assert (loc != NULL); | |
8771 | ||
8772 | addr = loc->address; | |
1afeeb75 | 8773 | bpoint = gdbarch_breakpoint_from_pc (loc->gdbarch, &addr, &len); |
514f746b | 8774 | |
939c61fa | 8775 | /* Software breakpoints unsupported? */ |
1afeeb75 | 8776 | if (bpoint == NULL) |
939c61fa JK |
8777 | return 0; |
8778 | ||
514f746b AR |
8779 | target_mem = alloca (len); |
8780 | ||
939c61fa JK |
8781 | /* Enable the automatic memory restoration from breakpoints while |
8782 | we read the memory. Otherwise we could say about our temporary | |
8783 | breakpoints they are permanent. */ | |
6c95b8df PA |
8784 | cleanup = save_current_space_and_thread (); |
8785 | ||
8786 | switch_to_program_space_and_thread (loc->pspace); | |
8787 | make_show_memory_breakpoints_cleanup (0); | |
939c61fa | 8788 | |
514f746b | 8789 | if (target_read_memory (loc->address, target_mem, len) == 0 |
1afeeb75 | 8790 | && memcmp (target_mem, bpoint, len) == 0) |
939c61fa | 8791 | retval = 1; |
514f746b | 8792 | |
939c61fa JK |
8793 | do_cleanups (cleanup); |
8794 | ||
8795 | return retval; | |
514f746b AR |
8796 | } |
8797 | ||
e7e0cddf SS |
8798 | /* Build a command list for the dprintf corresponding to the current |
8799 | settings of the dprintf style options. */ | |
8800 | ||
8801 | static void | |
8802 | update_dprintf_command_list (struct breakpoint *b) | |
8803 | { | |
8804 | char *dprintf_args = b->extra_string; | |
8805 | char *printf_line = NULL; | |
8806 | ||
8807 | if (!dprintf_args) | |
8808 | return; | |
8809 | ||
8810 | dprintf_args = skip_spaces (dprintf_args); | |
8811 | ||
8812 | /* Allow a comma, as it may have terminated a location, but don't | |
8813 | insist on it. */ | |
8814 | if (*dprintf_args == ',') | |
8815 | ++dprintf_args; | |
8816 | dprintf_args = skip_spaces (dprintf_args); | |
8817 | ||
8818 | if (*dprintf_args != '"') | |
8819 | error (_("Bad format string, missing '\"'.")); | |
8820 | ||
d3ce09f5 | 8821 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8822 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8823 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
8824 | { |
8825 | if (!dprintf_function) | |
8826 | error (_("No function supplied for dprintf call")); | |
8827 | ||
8828 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
8829 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
8830 | dprintf_function, | |
8831 | dprintf_channel, | |
8832 | dprintf_args); | |
8833 | else | |
8834 | printf_line = xstrprintf ("call (void) %s (%s)", | |
8835 | dprintf_function, | |
8836 | dprintf_args); | |
8837 | } | |
d3ce09f5 SS |
8838 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8839 | { | |
8840 | if (target_can_run_breakpoint_commands ()) | |
8841 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8842 | else | |
8843 | { | |
8844 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8845 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8846 | } | |
8847 | } | |
e7e0cddf SS |
8848 | else |
8849 | internal_error (__FILE__, __LINE__, | |
8850 | _("Invalid dprintf style.")); | |
8851 | ||
8852 | /* Manufacture a printf/continue sequence. */ | |
8853 | if (printf_line) | |
8854 | { | |
8855 | struct command_line *printf_cmd_line, *cont_cmd_line = NULL; | |
8856 | ||
d3ce09f5 SS |
8857 | if (strcmp (dprintf_style, dprintf_style_agent) != 0) |
8858 | { | |
8859 | cont_cmd_line = xmalloc (sizeof (struct command_line)); | |
8860 | cont_cmd_line->control_type = simple_control; | |
8861 | cont_cmd_line->body_count = 0; | |
8862 | cont_cmd_line->body_list = NULL; | |
8863 | cont_cmd_line->next = NULL; | |
8864 | cont_cmd_line->line = xstrdup ("continue"); | |
8865 | } | |
e7e0cddf SS |
8866 | |
8867 | printf_cmd_line = xmalloc (sizeof (struct command_line)); | |
8868 | printf_cmd_line->control_type = simple_control; | |
8869 | printf_cmd_line->body_count = 0; | |
8870 | printf_cmd_line->body_list = NULL; | |
8871 | printf_cmd_line->next = cont_cmd_line; | |
8872 | printf_cmd_line->line = printf_line; | |
8873 | ||
8874 | breakpoint_set_commands (b, printf_cmd_line); | |
8875 | } | |
8876 | } | |
8877 | ||
8878 | /* Update all dprintf commands, making their command lists reflect | |
8879 | current style settings. */ | |
8880 | ||
8881 | static void | |
8882 | update_dprintf_commands (char *args, int from_tty, | |
8883 | struct cmd_list_element *c) | |
8884 | { | |
8885 | struct breakpoint *b; | |
8886 | ||
8887 | ALL_BREAKPOINTS (b) | |
8888 | { | |
8889 | if (b->type == bp_dprintf) | |
8890 | update_dprintf_command_list (b); | |
8891 | } | |
8892 | } | |
c3f6f71d | 8893 | |
018d34a4 VP |
8894 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
8895 | as textual description of the location, and COND_STRING | |
db107f19 | 8896 | as condition expression. */ |
018d34a4 VP |
8897 | |
8898 | static void | |
d9b3f62e PA |
8899 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
8900 | struct symtabs_and_lines sals, char *addr_string, | |
f8eba3c6 | 8901 | char *filter, char *cond_string, |
e7e0cddf | 8902 | char *extra_string, |
d9b3f62e PA |
8903 | enum bptype type, enum bpdisp disposition, |
8904 | int thread, int task, int ignore_count, | |
c0a91b2b | 8905 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8906 | int enabled, int internal, unsigned flags, |
8907 | int display_canonical) | |
018d34a4 | 8908 | { |
0d381245 | 8909 | int i; |
018d34a4 VP |
8910 | |
8911 | if (type == bp_hardware_breakpoint) | |
8912 | { | |
fbbd034e AS |
8913 | int target_resources_ok; |
8914 | ||
8915 | i = hw_breakpoint_used_count (); | |
8916 | target_resources_ok = | |
8917 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8918 | i + 1, 0); |
8919 | if (target_resources_ok == 0) | |
8920 | error (_("No hardware breakpoint support in the target.")); | |
8921 | else if (target_resources_ok < 0) | |
8922 | error (_("Hardware breakpoints used exceeds limit.")); | |
8923 | } | |
8924 | ||
6c95b8df PA |
8925 | gdb_assert (sals.nelts > 0); |
8926 | ||
0d381245 VP |
8927 | for (i = 0; i < sals.nelts; ++i) |
8928 | { | |
8929 | struct symtab_and_line sal = sals.sals[i]; | |
8930 | struct bp_location *loc; | |
8931 | ||
8932 | if (from_tty) | |
5af949e3 UW |
8933 | { |
8934 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
8935 | if (!loc_gdbarch) | |
8936 | loc_gdbarch = gdbarch; | |
8937 | ||
8938 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 8939 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 8940 | } |
0d381245 VP |
8941 | |
8942 | if (i == 0) | |
8943 | { | |
d9b3f62e | 8944 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 8945 | b->thread = thread; |
4a306c9a | 8946 | b->task = task; |
855a6e68 | 8947 | |
0d381245 | 8948 | b->cond_string = cond_string; |
e7e0cddf | 8949 | b->extra_string = extra_string; |
0d381245 | 8950 | b->ignore_count = ignore_count; |
41447f92 | 8951 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 8952 | b->disposition = disposition; |
6c95b8df | 8953 | |
44f238bb PA |
8954 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8955 | b->loc->inserted = 1; | |
8956 | ||
0fb4aa4b PA |
8957 | if (type == bp_static_tracepoint) |
8958 | { | |
d9b3f62e | 8959 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
8960 | struct static_tracepoint_marker marker; |
8961 | ||
983af33b | 8962 | if (strace_marker_p (b)) |
0fb4aa4b PA |
8963 | { |
8964 | /* We already know the marker exists, otherwise, we | |
8965 | wouldn't see a sal for it. */ | |
8966 | char *p = &addr_string[3]; | |
8967 | char *endp; | |
8968 | char *marker_str; | |
0fb4aa4b | 8969 | |
e9cafbcc | 8970 | p = skip_spaces (p); |
0fb4aa4b | 8971 | |
e9cafbcc | 8972 | endp = skip_to_space (p); |
0fb4aa4b PA |
8973 | |
8974 | marker_str = savestring (p, endp - p); | |
d9b3f62e | 8975 | t->static_trace_marker_id = marker_str; |
0fb4aa4b | 8976 | |
3e43a32a MS |
8977 | printf_filtered (_("Probed static tracepoint " |
8978 | "marker \"%s\"\n"), | |
d9b3f62e | 8979 | t->static_trace_marker_id); |
0fb4aa4b PA |
8980 | } |
8981 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
8982 | { | |
d9b3f62e | 8983 | t->static_trace_marker_id = xstrdup (marker.str_id); |
0fb4aa4b PA |
8984 | release_static_tracepoint_marker (&marker); |
8985 | ||
3e43a32a MS |
8986 | printf_filtered (_("Probed static tracepoint " |
8987 | "marker \"%s\"\n"), | |
d9b3f62e | 8988 | t->static_trace_marker_id); |
0fb4aa4b PA |
8989 | } |
8990 | else | |
3e43a32a MS |
8991 | warning (_("Couldn't determine the static " |
8992 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
8993 | } |
8994 | ||
0d381245 VP |
8995 | loc = b->loc; |
8996 | } | |
8997 | else | |
018d34a4 | 8998 | { |
39d61571 | 8999 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
9000 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
9001 | loc->inserted = 1; | |
0d381245 VP |
9002 | } |
9003 | ||
514f746b AR |
9004 | if (bp_loc_is_permanent (loc)) |
9005 | make_breakpoint_permanent (b); | |
9006 | ||
0d381245 VP |
9007 | if (b->cond_string) |
9008 | { | |
9009 | char *arg = b->cond_string; | |
1bb9788d TT |
9010 | loc->cond = parse_exp_1 (&arg, loc->address, |
9011 | block_for_pc (loc->address), 0); | |
0d381245 | 9012 | if (*arg) |
588ae58c | 9013 | error (_("Garbage '%s' follows condition"), arg); |
018d34a4 | 9014 | } |
e7e0cddf SS |
9015 | |
9016 | /* Dynamic printf requires and uses additional arguments on the | |
9017 | command line, otherwise it's an error. */ | |
9018 | if (type == bp_dprintf) | |
9019 | { | |
9020 | if (b->extra_string) | |
9021 | update_dprintf_command_list (b); | |
9022 | else | |
9023 | error (_("Format string required")); | |
9024 | } | |
9025 | else if (b->extra_string) | |
588ae58c | 9026 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 9027 | } |
018d34a4 | 9028 | |
56435ebe | 9029 | b->display_canonical = display_canonical; |
018d34a4 VP |
9030 | if (addr_string) |
9031 | b->addr_string = addr_string; | |
9032 | else | |
9033 | /* addr_string has to be used or breakpoint_re_set will delete | |
9034 | me. */ | |
5af949e3 UW |
9035 | b->addr_string |
9036 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
f8eba3c6 | 9037 | b->filter = filter; |
d9b3f62e | 9038 | } |
018d34a4 | 9039 | |
d9b3f62e PA |
9040 | static void |
9041 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
9042 | struct symtabs_and_lines sals, char *addr_string, | |
f8eba3c6 | 9043 | char *filter, char *cond_string, |
e7e0cddf | 9044 | char *extra_string, |
d9b3f62e PA |
9045 | enum bptype type, enum bpdisp disposition, |
9046 | int thread, int task, int ignore_count, | |
c0a91b2b | 9047 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
9048 | int enabled, int internal, unsigned flags, |
9049 | int display_canonical) | |
d9b3f62e PA |
9050 | { |
9051 | struct breakpoint *b; | |
9052 | struct cleanup *old_chain; | |
9053 | ||
9054 | if (is_tracepoint_type (type)) | |
9055 | { | |
9056 | struct tracepoint *t; | |
9057 | ||
9058 | t = XCNEW (struct tracepoint); | |
9059 | b = &t->base; | |
9060 | } | |
9061 | else | |
9062 | b = XNEW (struct breakpoint); | |
9063 | ||
9064 | old_chain = make_cleanup (xfree, b); | |
9065 | ||
9066 | init_breakpoint_sal (b, gdbarch, | |
9067 | sals, addr_string, | |
e7e0cddf | 9068 | filter, cond_string, extra_string, |
d9b3f62e PA |
9069 | type, disposition, |
9070 | thread, task, ignore_count, | |
9071 | ops, from_tty, | |
44f238bb PA |
9072 | enabled, internal, flags, |
9073 | display_canonical); | |
d9b3f62e PA |
9074 | discard_cleanups (old_chain); |
9075 | ||
3ea46bff | 9076 | install_breakpoint (internal, b, 0); |
018d34a4 VP |
9077 | } |
9078 | ||
9079 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
9080 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
9081 | value. COND_STRING, if not NULL, specified the condition to be | |
9082 | used for all breakpoints. Essentially the only case where | |
9083 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
9084 | function. In that case, it's still not possible to specify | |
9085 | separate conditions for different overloaded functions, so | |
9086 | we take just a single condition string. | |
9087 | ||
c3f6f71d | 9088 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 9089 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
9090 | array contents). If the function fails (error() is called), the |
9091 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 9092 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
9093 | |
9094 | static void | |
8cdf0e15 | 9095 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 9096 | struct linespec_result *canonical, |
e7e0cddf | 9097 | char *cond_string, char *extra_string, |
8cdf0e15 VP |
9098 | enum bptype type, enum bpdisp disposition, |
9099 | int thread, int task, int ignore_count, | |
c0a91b2b | 9100 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 9101 | int enabled, int internal, unsigned flags) |
c906108c | 9102 | { |
018d34a4 | 9103 | int i; |
f8eba3c6 | 9104 | struct linespec_sals *lsal; |
cc59ec59 | 9105 | |
f8eba3c6 TT |
9106 | if (canonical->pre_expanded) |
9107 | gdb_assert (VEC_length (linespec_sals, canonical->sals) == 1); | |
9108 | ||
9109 | for (i = 0; VEC_iterate (linespec_sals, canonical->sals, i, lsal); ++i) | |
c3f6f71d | 9110 | { |
f8eba3c6 TT |
9111 | /* Note that 'addr_string' can be NULL in the case of a plain |
9112 | 'break', without arguments. */ | |
9113 | char *addr_string = (canonical->addr_string | |
9114 | ? xstrdup (canonical->addr_string) | |
9115 | : NULL); | |
9116 | char *filter_string = lsal->canonical ? xstrdup (lsal->canonical) : NULL; | |
9117 | struct cleanup *inner = make_cleanup (xfree, addr_string); | |
0d381245 | 9118 | |
f8eba3c6 TT |
9119 | make_cleanup (xfree, filter_string); |
9120 | create_breakpoint_sal (gdbarch, lsal->sals, | |
9121 | addr_string, | |
9122 | filter_string, | |
e7e0cddf SS |
9123 | cond_string, extra_string, |
9124 | type, disposition, | |
84f4c1fe | 9125 | thread, task, ignore_count, ops, |
44f238bb | 9126 | from_tty, enabled, internal, flags, |
56435ebe | 9127 | canonical->special_display); |
f8eba3c6 | 9128 | discard_cleanups (inner); |
c3f6f71d | 9129 | } |
c3f6f71d | 9130 | } |
c906108c | 9131 | |
9998af43 | 9132 | /* Parse ADDRESS which is assumed to be a SAL specification possibly |
c3f6f71d | 9133 | followed by conditionals. On return, SALS contains an array of SAL |
4a64f543 | 9134 | addresses found. ADDR_STRING contains a vector of (canonical) |
9998af43 TJB |
9135 | address strings. ADDRESS points to the end of the SAL. |
9136 | ||
9137 | The array and the line spec strings are allocated on the heap, it is | |
9138 | the caller's responsibility to free them. */ | |
c906108c | 9139 | |
b9362cc7 | 9140 | static void |
c3f6f71d | 9141 | parse_breakpoint_sals (char **address, |
58438ac1 | 9142 | struct linespec_result *canonical) |
c3f6f71d | 9143 | { |
c3f6f71d | 9144 | /* If no arg given, or if first arg is 'if ', use the default |
4a64f543 | 9145 | breakpoint. */ |
c3f6f71d JM |
9146 | if ((*address) == NULL |
9147 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c | 9148 | { |
1bfeeb0f JL |
9149 | /* The last displayed codepoint, if it's valid, is our default breakpoint |
9150 | address. */ | |
9151 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9152 | { |
f8eba3c6 | 9153 | struct linespec_sals lsal; |
c3f6f71d | 9154 | struct symtab_and_line sal; |
1c8cdcb1 | 9155 | CORE_ADDR pc; |
cc59ec59 | 9156 | |
4a64f543 | 9157 | init_sal (&sal); /* Initialize to zeroes. */ |
f8eba3c6 | 9158 | lsal.sals.sals = (struct symtab_and_line *) |
c906108c | 9159 | xmalloc (sizeof (struct symtab_and_line)); |
1bfeeb0f JL |
9160 | |
9161 | /* Set sal's pspace, pc, symtab, and line to the values | |
1c8cdcb1 JK |
9162 | corresponding to the last call to print_frame_info. |
9163 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
9164 | as the breakpoint line number is inappropriate otherwise. | |
9165 | find_pc_line would adjust PC, re-set it back. */ | |
1bfeeb0f | 9166 | get_last_displayed_sal (&sal); |
1c8cdcb1 JK |
9167 | pc = sal.pc; |
9168 | sal = find_pc_line (pc, 0); | |
00903456 | 9169 | |
4a64f543 | 9170 | /* "break" without arguments is equivalent to "break *PC" |
1bfeeb0f JL |
9171 | where PC is the last displayed codepoint's address. So |
9172 | make sure to set sal.explicit_pc to prevent GDB from | |
9173 | trying to expand the list of sals to include all other | |
9174 | instances with the same symtab and line. */ | |
1c8cdcb1 | 9175 | sal.pc = pc; |
00903456 JK |
9176 | sal.explicit_pc = 1; |
9177 | ||
f8eba3c6 TT |
9178 | lsal.sals.sals[0] = sal; |
9179 | lsal.sals.nelts = 1; | |
9180 | lsal.canonical = NULL; | |
9181 | ||
9182 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
c906108c SS |
9183 | } |
9184 | else | |
8a3fe4f8 | 9185 | error (_("No default breakpoint address now.")); |
c906108c SS |
9186 | } |
9187 | else | |
9188 | { | |
cc80f267 JK |
9189 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
9190 | ||
c906108c | 9191 | /* Force almost all breakpoints to be in terms of the |
4a64f543 MS |
9192 | current_source_symtab (which is decode_line_1's default). |
9193 | This should produce the results we want almost all of the | |
cc80f267 JK |
9194 | time while leaving default_breakpoint_* alone. |
9195 | ||
9196 | ObjC: However, don't match an Objective-C method name which | |
9197 | may have a '+' or '-' succeeded by a '['. */ | |
9198 | if (last_displayed_sal_is_valid () | |
9199 | && (!cursal.symtab | |
9200 | || ((strchr ("+-", (*address)[0]) != NULL) | |
9201 | && ((*address)[1] != '[')))) | |
f8eba3c6 TT |
9202 | decode_line_full (address, DECODE_LINE_FUNFIRSTLINE, |
9203 | get_last_displayed_symtab (), | |
9204 | get_last_displayed_line (), | |
9205 | canonical, NULL, NULL); | |
c906108c | 9206 | else |
f8eba3c6 | 9207 | decode_line_full (address, DECODE_LINE_FUNFIRSTLINE, |
cc80f267 | 9208 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c906108c | 9209 | } |
c3f6f71d | 9210 | } |
c906108c | 9211 | |
c906108c | 9212 | |
c3f6f71d | 9213 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9214 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9215 | |
b9362cc7 | 9216 | static void |
23e7acfb | 9217 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals) |
c3f6f71d JM |
9218 | { |
9219 | int i; | |
cc59ec59 | 9220 | |
c3f6f71d | 9221 | for (i = 0; i < sals->nelts; i++) |
ee53e872 | 9222 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
9223 | } |
9224 | ||
7a697b8d SS |
9225 | /* Fast tracepoints may have restrictions on valid locations. For |
9226 | instance, a fast tracepoint using a jump instead of a trap will | |
9227 | likely have to overwrite more bytes than a trap would, and so can | |
9228 | only be placed where the instruction is longer than the jump, or a | |
9229 | multi-instruction sequence does not have a jump into the middle of | |
9230 | it, etc. */ | |
9231 | ||
9232 | static void | |
9233 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
9234 | struct symtabs_and_lines *sals) | |
9235 | { | |
9236 | int i, rslt; | |
9237 | struct symtab_and_line *sal; | |
9238 | char *msg; | |
9239 | struct cleanup *old_chain; | |
9240 | ||
9241 | for (i = 0; i < sals->nelts; i++) | |
9242 | { | |
f8eba3c6 TT |
9243 | struct gdbarch *sarch; |
9244 | ||
7a697b8d SS |
9245 | sal = &sals->sals[i]; |
9246 | ||
f8eba3c6 TT |
9247 | sarch = get_sal_arch (*sal); |
9248 | /* We fall back to GDBARCH if there is no architecture | |
9249 | associated with SAL. */ | |
9250 | if (sarch == NULL) | |
9251 | sarch = gdbarch; | |
9252 | rslt = gdbarch_fast_tracepoint_valid_at (sarch, sal->pc, | |
7a697b8d SS |
9253 | NULL, &msg); |
9254 | old_chain = make_cleanup (xfree, msg); | |
9255 | ||
9256 | if (!rslt) | |
9257 | error (_("May not have a fast tracepoint at 0x%s%s"), | |
f8eba3c6 | 9258 | paddress (sarch, sal->pc), (msg ? msg : "")); |
7a697b8d SS |
9259 | |
9260 | do_cleanups (old_chain); | |
9261 | } | |
9262 | } | |
9263 | ||
af4908ba KS |
9264 | /* Issue an invalid thread ID error. */ |
9265 | ||
9266 | static void ATTRIBUTE_NORETURN | |
9267 | invalid_thread_id_error (int id) | |
9268 | { | |
9269 | error (_("Unknown thread %d."), id); | |
9270 | } | |
9271 | ||
018d34a4 VP |
9272 | /* Given TOK, a string specification of condition and thread, as |
9273 | accepted by the 'break' command, extract the condition | |
9274 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9275 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9276 | If no condition is found, *COND_STRING is set to NULL. |
9277 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9278 | |
9279 | static void | |
9280 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
e7e0cddf SS |
9281 | char **cond_string, int *thread, int *task, |
9282 | char **rest) | |
018d34a4 VP |
9283 | { |
9284 | *cond_string = NULL; | |
9285 | *thread = -1; | |
ed1d1739 KS |
9286 | *task = 0; |
9287 | *rest = NULL; | |
9288 | ||
018d34a4 VP |
9289 | while (tok && *tok) |
9290 | { | |
9291 | char *end_tok; | |
9292 | int toklen; | |
9293 | char *cond_start = NULL; | |
9294 | char *cond_end = NULL; | |
cc59ec59 | 9295 | |
e9cafbcc | 9296 | tok = skip_spaces (tok); |
e7e0cddf SS |
9297 | |
9298 | if ((*tok == '"' || *tok == ',') && rest) | |
9299 | { | |
9300 | *rest = savestring (tok, strlen (tok)); | |
9301 | return; | |
9302 | } | |
9303 | ||
e9cafbcc | 9304 | end_tok = skip_to_space (tok); |
d634f2de | 9305 | |
018d34a4 | 9306 | toklen = end_tok - tok; |
d634f2de | 9307 | |
018d34a4 VP |
9308 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9309 | { | |
f7545552 TT |
9310 | struct expression *expr; |
9311 | ||
018d34a4 | 9312 | tok = cond_start = end_tok + 1; |
1bb9788d | 9313 | expr = parse_exp_1 (&tok, pc, block_for_pc (pc), 0); |
f7545552 | 9314 | xfree (expr); |
018d34a4 | 9315 | cond_end = tok; |
d634f2de | 9316 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 VP |
9317 | } |
9318 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
9319 | { | |
9320 | char *tmptok; | |
d634f2de | 9321 | |
018d34a4 VP |
9322 | tok = end_tok + 1; |
9323 | tmptok = tok; | |
9324 | *thread = strtol (tok, &tok, 0); | |
9325 | if (tok == tmptok) | |
9326 | error (_("Junk after thread keyword.")); | |
9327 | if (!valid_thread_id (*thread)) | |
af4908ba | 9328 | invalid_thread_id_error (*thread); |
018d34a4 | 9329 | } |
4a306c9a JB |
9330 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9331 | { | |
9332 | char *tmptok; | |
9333 | ||
9334 | tok = end_tok + 1; | |
9335 | tmptok = tok; | |
9336 | *task = strtol (tok, &tok, 0); | |
9337 | if (tok == tmptok) | |
9338 | error (_("Junk after task keyword.")); | |
9339 | if (!valid_task_id (*task)) | |
b6199126 | 9340 | error (_("Unknown task %d."), *task); |
4a306c9a | 9341 | } |
e7e0cddf SS |
9342 | else if (rest) |
9343 | { | |
9344 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9345 | return; |
e7e0cddf | 9346 | } |
018d34a4 VP |
9347 | else |
9348 | error (_("Junk at end of arguments.")); | |
9349 | } | |
9350 | } | |
9351 | ||
0fb4aa4b PA |
9352 | /* Decode a static tracepoint marker spec. */ |
9353 | ||
9354 | static struct symtabs_and_lines | |
9355 | decode_static_tracepoint_spec (char **arg_p) | |
9356 | { | |
9357 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
9358 | struct symtabs_and_lines sals; | |
0fb4aa4b PA |
9359 | struct cleanup *old_chain; |
9360 | char *p = &(*arg_p)[3]; | |
9361 | char *endp; | |
9362 | char *marker_str; | |
9363 | int i; | |
9364 | ||
e9cafbcc | 9365 | p = skip_spaces (p); |
0fb4aa4b | 9366 | |
e9cafbcc | 9367 | endp = skip_to_space (p); |
0fb4aa4b PA |
9368 | |
9369 | marker_str = savestring (p, endp - p); | |
9370 | old_chain = make_cleanup (xfree, marker_str); | |
9371 | ||
9372 | markers = target_static_tracepoint_markers_by_strid (marker_str); | |
9373 | if (VEC_empty(static_tracepoint_marker_p, markers)) | |
9374 | error (_("No known static tracepoint marker named %s"), marker_str); | |
9375 | ||
9376 | sals.nelts = VEC_length(static_tracepoint_marker_p, markers); | |
9377 | sals.sals = xmalloc (sizeof *sals.sals * sals.nelts); | |
9378 | ||
9379 | for (i = 0; i < sals.nelts; i++) | |
9380 | { | |
9381 | struct static_tracepoint_marker *marker; | |
9382 | ||
9383 | marker = VEC_index (static_tracepoint_marker_p, markers, i); | |
9384 | ||
9385 | init_sal (&sals.sals[i]); | |
9386 | ||
9387 | sals.sals[i] = find_pc_line (marker->address, 0); | |
9388 | sals.sals[i].pc = marker->address; | |
9389 | ||
9390 | release_static_tracepoint_marker (marker); | |
9391 | } | |
9392 | ||
9393 | do_cleanups (old_chain); | |
9394 | ||
9395 | *arg_p = endp; | |
9396 | return sals; | |
9397 | } | |
9398 | ||
fd9b8c24 PA |
9399 | /* Set a breakpoint. This function is shared between CLI and MI |
9400 | functions for setting a breakpoint. This function has two major | |
9401 | modes of operations, selected by the PARSE_CONDITION_AND_THREAD | |
9402 | parameter. If non-zero, the function will parse arg, extracting | |
4a64f543 MS |
9403 | breakpoint location, address and thread. Otherwise, ARG is just |
9404 | the location of breakpoint, with condition and thread specified by | |
9405 | the COND_STRING and THREAD parameters. If INTERNAL is non-zero, | |
9406 | the breakpoint number will be allocated from the internal | |
9407 | breakpoint count. Returns true if any breakpoint was created; | |
9408 | false otherwise. */ | |
0101ce28 | 9409 | |
8cdf0e15 VP |
9410 | int |
9411 | create_breakpoint (struct gdbarch *gdbarch, | |
e7e0cddf SS |
9412 | char *arg, char *cond_string, |
9413 | int thread, char *extra_string, | |
8cdf0e15 | 9414 | int parse_condition_and_thread, |
0fb4aa4b | 9415 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9416 | int ignore_count, |
9417 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9418 | const struct breakpoint_ops *ops, |
44f238bb PA |
9419 | int from_tty, int enabled, int internal, |
9420 | unsigned flags) | |
c3f6f71d | 9421 | { |
b78a6381 | 9422 | volatile struct gdb_exception e; |
f8eba3c6 | 9423 | char *copy_arg = NULL; |
c3f6f71d | 9424 | char *addr_start = arg; |
7efd8fc2 | 9425 | struct linespec_result canonical; |
c3f6f71d | 9426 | struct cleanup *old_chain; |
80c99de1 | 9427 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 9428 | int pending = 0; |
4a306c9a | 9429 | int task = 0; |
86b17b60 | 9430 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9431 | |
348d480f PA |
9432 | gdb_assert (ops != NULL); |
9433 | ||
7efd8fc2 | 9434 | init_linespec_result (&canonical); |
c3f6f71d | 9435 | |
b78a6381 TT |
9436 | TRY_CATCH (e, RETURN_MASK_ALL) |
9437 | { | |
983af33b SDJ |
9438 | ops->create_sals_from_address (&arg, &canonical, type_wanted, |
9439 | addr_start, ©_arg); | |
b78a6381 | 9440 | } |
0101ce28 JJ |
9441 | |
9442 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 9443 | switch (e.reason) |
0101ce28 | 9444 | { |
983af33b SDJ |
9445 | case GDB_NO_ERROR: |
9446 | if (VEC_empty (linespec_sals, canonical.sals)) | |
9447 | return 0; | |
9448 | break; | |
05ff989b AC |
9449 | case RETURN_ERROR: |
9450 | switch (e.error) | |
0101ce28 | 9451 | { |
05ff989b | 9452 | case NOT_FOUND_ERROR: |
0101ce28 | 9453 | |
05ff989b AC |
9454 | /* If pending breakpoint support is turned off, throw |
9455 | error. */ | |
fa8d40ab JJ |
9456 | |
9457 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
9458 | throw_exception (e); |
9459 | ||
9460 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9461 | |
05ff989b AC |
9462 | /* If pending breakpoint support is auto query and the user |
9463 | selects no, then simply return the error code. */ | |
059fb39f | 9464 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9465 | && !nquery (_("Make %s pending on future shared library load? "), |
9466 | bptype_string (type_wanted))) | |
fd9b8c24 | 9467 | return 0; |
fa8d40ab | 9468 | |
05ff989b AC |
9469 | /* At this point, either the user was queried about setting |
9470 | a pending breakpoint and selected yes, or pending | |
9471 | breakpoint behavior is on and thus a pending breakpoint | |
9472 | is defaulted on behalf of the user. */ | |
f8eba3c6 TT |
9473 | { |
9474 | struct linespec_sals lsal; | |
9475 | ||
9476 | copy_arg = xstrdup (addr_start); | |
9477 | lsal.canonical = xstrdup (copy_arg); | |
9478 | lsal.sals.nelts = 1; | |
9479 | lsal.sals.sals = XNEW (struct symtab_and_line); | |
9480 | init_sal (&lsal.sals.sals[0]); | |
9481 | pending = 1; | |
9482 | VEC_safe_push (linespec_sals, canonical.sals, &lsal); | |
9483 | } | |
05ff989b AC |
9484 | break; |
9485 | default: | |
98deb0da | 9486 | throw_exception (e); |
0101ce28 | 9487 | } |
2abae994 | 9488 | break; |
05ff989b | 9489 | default: |
983af33b | 9490 | throw_exception (e); |
0101ce28 | 9491 | } |
c3f6f71d | 9492 | |
4a64f543 | 9493 | /* Create a chain of things that always need to be cleaned up. */ |
f8eba3c6 | 9494 | old_chain = make_cleanup_destroy_linespec_result (&canonical); |
c3f6f71d | 9495 | |
c3f6f71d JM |
9496 | /* ----------------------------- SNIP ----------------------------- |
9497 | Anything added to the cleanup chain beyond this point is assumed | |
9498 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
9499 | then the memory is not reclaimed. */ |
9500 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d | 9501 | |
c3f6f71d JM |
9502 | /* Resolve all line numbers to PC's and verify that the addresses |
9503 | are ok for the target. */ | |
0101ce28 | 9504 | if (!pending) |
f8eba3c6 TT |
9505 | { |
9506 | int ix; | |
9507 | struct linespec_sals *iter; | |
9508 | ||
9509 | for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix) | |
9510 | breakpoint_sals_to_pc (&iter->sals); | |
9511 | } | |
c3f6f71d | 9512 | |
7a697b8d | 9513 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9514 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 TT |
9515 | { |
9516 | int ix; | |
9517 | struct linespec_sals *iter; | |
9518 | ||
9519 | for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix) | |
9520 | check_fast_tracepoint_sals (gdbarch, &iter->sals); | |
9521 | } | |
7a697b8d | 9522 | |
c3f6f71d JM |
9523 | /* Verify that condition can be parsed, before setting any |
9524 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9525 | breakpoint. */ |
0101ce28 | 9526 | if (!pending) |
c3f6f71d | 9527 | { |
f8eba3c6 TT |
9528 | struct linespec_sals *lsal; |
9529 | ||
9530 | lsal = VEC_index (linespec_sals, canonical.sals, 0); | |
9531 | ||
2f069f6f | 9532 | if (parse_condition_and_thread) |
72b2ff0e | 9533 | { |
e7e0cddf | 9534 | char *rest; |
72b2ff0e VP |
9535 | /* Here we only parse 'arg' to separate condition |
9536 | from thread number, so parsing in context of first | |
9537 | sal is OK. When setting the breakpoint we'll | |
9538 | re-parse it in context of each sal. */ | |
ed1d1739 | 9539 | |
f8eba3c6 | 9540 | find_condition_and_thread (arg, lsal->sals.sals[0].pc, &cond_string, |
e7e0cddf | 9541 | &thread, &task, &rest); |
72b2ff0e VP |
9542 | if (cond_string) |
9543 | make_cleanup (xfree, cond_string); | |
e7e0cddf SS |
9544 | if (rest) |
9545 | make_cleanup (xfree, rest); | |
9546 | if (rest) | |
9547 | extra_string = rest; | |
72b2ff0e | 9548 | } |
2f069f6f | 9549 | else |
72b2ff0e VP |
9550 | { |
9551 | /* Create a private copy of condition string. */ | |
9552 | if (cond_string) | |
9553 | { | |
9554 | cond_string = xstrdup (cond_string); | |
9555 | make_cleanup (xfree, cond_string); | |
9556 | } | |
e7e0cddf SS |
9557 | /* Create a private copy of any extra string. */ |
9558 | if (extra_string) | |
9559 | { | |
9560 | extra_string = xstrdup (extra_string); | |
9561 | make_cleanup (xfree, extra_string); | |
9562 | } | |
72b2ff0e | 9563 | } |
0fb4aa4b | 9564 | |
983af33b | 9565 | ops->create_breakpoints_sal (gdbarch, &canonical, lsal, |
e7e0cddf | 9566 | cond_string, extra_string, type_wanted, |
d9b3f62e PA |
9567 | tempflag ? disp_del : disp_donttouch, |
9568 | thread, task, ignore_count, ops, | |
44f238bb | 9569 | from_tty, enabled, internal, flags); |
c906108c | 9570 | } |
0101ce28 JJ |
9571 | else |
9572 | { | |
0101ce28 JJ |
9573 | struct breakpoint *b; |
9574 | ||
0101ce28 JJ |
9575 | make_cleanup (xfree, copy_arg); |
9576 | ||
bfccc43c YQ |
9577 | if (is_tracepoint_type (type_wanted)) |
9578 | { | |
9579 | struct tracepoint *t; | |
9580 | ||
9581 | t = XCNEW (struct tracepoint); | |
9582 | b = &t->base; | |
9583 | } | |
9584 | else | |
9585 | b = XNEW (struct breakpoint); | |
9586 | ||
9587 | init_raw_breakpoint_without_location (b, gdbarch, type_wanted, ops); | |
9588 | ||
f8eba3c6 | 9589 | b->addr_string = copy_arg; |
e12c7713 MK |
9590 | if (parse_condition_and_thread) |
9591 | b->cond_string = NULL; | |
9592 | else | |
9593 | { | |
9594 | /* Create a private copy of condition string. */ | |
9595 | if (cond_string) | |
9596 | { | |
9597 | cond_string = xstrdup (cond_string); | |
9598 | make_cleanup (xfree, cond_string); | |
9599 | } | |
9600 | b->cond_string = cond_string; | |
9601 | } | |
e7e0cddf | 9602 | b->extra_string = NULL; |
0101ce28 | 9603 | b->ignore_count = ignore_count; |
0101ce28 | 9604 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9605 | b->condition_not_parsed = 1; |
41447f92 | 9606 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
9607 | if ((type_wanted != bp_breakpoint |
9608 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 9609 | b->pspace = current_program_space; |
8bea4e01 | 9610 | |
bfccc43c | 9611 | install_breakpoint (internal, b, 0); |
0101ce28 JJ |
9612 | } |
9613 | ||
f8eba3c6 | 9614 | if (VEC_length (linespec_sals, canonical.sals) > 1) |
95a42b64 | 9615 | { |
3e43a32a MS |
9616 | warning (_("Multiple breakpoints were set.\nUse the " |
9617 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9618 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9619 | } |
9620 | ||
80c99de1 PA |
9621 | /* That's it. Discard the cleanups for data inserted into the |
9622 | breakpoint. */ | |
9623 | discard_cleanups (bkpt_chain); | |
9624 | /* But cleanup everything else. */ | |
c3f6f71d | 9625 | do_cleanups (old_chain); |
217dc9e2 | 9626 | |
80c99de1 | 9627 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
217dc9e2 | 9628 | update_global_location_list (1); |
fd9b8c24 PA |
9629 | |
9630 | return 1; | |
c3f6f71d | 9631 | } |
c906108c | 9632 | |
348d480f | 9633 | /* Set a breakpoint. |
72b2ff0e VP |
9634 | ARG is a string describing breakpoint address, |
9635 | condition, and thread. | |
9636 | FLAG specifies if a breakpoint is hardware on, | |
9637 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9638 | and BP_TEMPFLAG. */ | |
348d480f | 9639 | |
98deb0da | 9640 | static void |
72b2ff0e | 9641 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 9642 | { |
72b2ff0e | 9643 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9644 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9645 | ? bp_hardware_breakpoint | |
9646 | : bp_breakpoint); | |
55aa24fb SDJ |
9647 | struct breakpoint_ops *ops; |
9648 | const char *arg_cp = arg; | |
9649 | ||
9650 | /* Matching breakpoints on probes. */ | |
9651 | if (arg && probe_linespec_to_ops (&arg_cp) != NULL) | |
9652 | ops = &bkpt_probe_breakpoint_ops; | |
9653 | else | |
9654 | ops = &bkpt_breakpoint_ops; | |
c3f6f71d | 9655 | |
8cdf0e15 VP |
9656 | create_breakpoint (get_current_arch (), |
9657 | arg, | |
e7e0cddf | 9658 | NULL, 0, NULL, 1 /* parse arg */, |
0fb4aa4b | 9659 | tempflag, type_wanted, |
8cdf0e15 VP |
9660 | 0 /* Ignore count */, |
9661 | pending_break_support, | |
55aa24fb | 9662 | ops, |
8cdf0e15 | 9663 | from_tty, |
84f4c1fe | 9664 | 1 /* enabled */, |
44f238bb PA |
9665 | 0 /* internal */, |
9666 | 0); | |
c906108c SS |
9667 | } |
9668 | ||
c906108c SS |
9669 | /* Helper function for break_command_1 and disassemble_command. */ |
9670 | ||
9671 | void | |
fba45db2 | 9672 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9673 | { |
9674 | CORE_ADDR pc; | |
9675 | ||
9676 | if (sal->pc == 0 && sal->symtab != NULL) | |
9677 | { | |
9678 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9679 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
9680 | sal->line, sal->symtab->filename); |
9681 | sal->pc = pc; | |
6a048695 | 9682 | |
4a64f543 MS |
9683 | /* If this SAL corresponds to a breakpoint inserted using a line |
9684 | number, then skip the function prologue if necessary. */ | |
6a048695 | 9685 | if (sal->explicit_line) |
059acae7 | 9686 | skip_prologue_sal (sal); |
c906108c SS |
9687 | } |
9688 | ||
9689 | if (sal->section == 0 && sal->symtab != NULL) | |
9690 | { | |
9691 | struct blockvector *bv; | |
c5aa993b JM |
9692 | struct block *b; |
9693 | struct symbol *sym; | |
c906108c | 9694 | |
801e3a5b | 9695 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
9696 | if (bv != NULL) |
9697 | { | |
7f0df278 | 9698 | sym = block_linkage_function (b); |
c906108c SS |
9699 | if (sym != NULL) |
9700 | { | |
9701 | fixup_symbol_section (sym, sal->symtab->objfile); | |
714835d5 | 9702 | sal->section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
9703 | } |
9704 | else | |
9705 | { | |
4a64f543 MS |
9706 | /* It really is worthwhile to have the section, so we'll |
9707 | just have to look harder. This case can be executed | |
9708 | if we have line numbers but no functions (as can | |
9709 | happen in assembly source). */ | |
c906108c | 9710 | |
c5aa993b | 9711 | struct minimal_symbol *msym; |
6c95b8df PA |
9712 | struct cleanup *old_chain = save_current_space_and_thread (); |
9713 | ||
9714 | switch_to_program_space_and_thread (sal->pspace); | |
c906108c SS |
9715 | |
9716 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
9717 | if (msym) | |
714835d5 | 9718 | sal->section = SYMBOL_OBJ_SECTION (msym); |
6c95b8df PA |
9719 | |
9720 | do_cleanups (old_chain); | |
c906108c SS |
9721 | } |
9722 | } | |
9723 | } | |
9724 | } | |
9725 | ||
9726 | void | |
fba45db2 | 9727 | break_command (char *arg, int from_tty) |
c906108c | 9728 | { |
db107f19 | 9729 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9730 | } |
9731 | ||
c906108c | 9732 | void |
fba45db2 | 9733 | tbreak_command (char *arg, int from_tty) |
c906108c | 9734 | { |
db107f19 | 9735 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9736 | } |
9737 | ||
c906108c | 9738 | static void |
fba45db2 | 9739 | hbreak_command (char *arg, int from_tty) |
c906108c | 9740 | { |
db107f19 | 9741 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9742 | } |
9743 | ||
9744 | static void | |
fba45db2 | 9745 | thbreak_command (char *arg, int from_tty) |
c906108c | 9746 | { |
db107f19 | 9747 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9748 | } |
9749 | ||
9750 | static void | |
fba45db2 | 9751 | stop_command (char *arg, int from_tty) |
c906108c | 9752 | { |
a3f17187 | 9753 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9754 | Usage: stop in <function | address>\n\ |
a3f17187 | 9755 | stop at <line>\n")); |
c906108c SS |
9756 | } |
9757 | ||
9758 | static void | |
fba45db2 | 9759 | stopin_command (char *arg, int from_tty) |
c906108c SS |
9760 | { |
9761 | int badInput = 0; | |
9762 | ||
c5aa993b | 9763 | if (arg == (char *) NULL) |
c906108c SS |
9764 | badInput = 1; |
9765 | else if (*arg != '*') | |
9766 | { | |
9767 | char *argptr = arg; | |
9768 | int hasColon = 0; | |
9769 | ||
4a64f543 | 9770 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 9771 | say it is bad, otherwise, it should be an address or |
4a64f543 | 9772 | function/method name. */ |
c906108c | 9773 | while (*argptr && !hasColon) |
c5aa993b JM |
9774 | { |
9775 | hasColon = (*argptr == ':'); | |
9776 | argptr++; | |
9777 | } | |
c906108c SS |
9778 | |
9779 | if (hasColon) | |
c5aa993b | 9780 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9781 | else |
c5aa993b | 9782 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9783 | } |
9784 | ||
9785 | if (badInput) | |
a3f17187 | 9786 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9787 | else |
db107f19 | 9788 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9789 | } |
9790 | ||
9791 | static void | |
fba45db2 | 9792 | stopat_command (char *arg, int from_tty) |
c906108c SS |
9793 | { |
9794 | int badInput = 0; | |
9795 | ||
c5aa993b | 9796 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
9797 | badInput = 1; |
9798 | else | |
9799 | { | |
9800 | char *argptr = arg; | |
9801 | int hasColon = 0; | |
9802 | ||
4a64f543 MS |
9803 | /* Look for a ':'. If there is a '::' then get out, otherwise |
9804 | it is probably a line number. */ | |
c906108c | 9805 | while (*argptr && !hasColon) |
c5aa993b JM |
9806 | { |
9807 | hasColon = (*argptr == ':'); | |
9808 | argptr++; | |
9809 | } | |
c906108c SS |
9810 | |
9811 | if (hasColon) | |
c5aa993b | 9812 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 9813 | else |
c5aa993b | 9814 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
9815 | } |
9816 | ||
9817 | if (badInput) | |
a3f17187 | 9818 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 9819 | else |
db107f19 | 9820 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9821 | } |
9822 | ||
e7e0cddf SS |
9823 | void dprintf_command (char *arg, int from_tty); |
9824 | ||
9825 | /* The dynamic printf command is mostly like a regular breakpoint, but | |
9826 | with a prewired command list consisting of a single output command, | |
9827 | built from extra arguments supplied on the dprintf command | |
9828 | line. */ | |
9829 | ||
9830 | void | |
9831 | dprintf_command (char *arg, int from_tty) | |
9832 | { | |
9833 | create_breakpoint (get_current_arch (), | |
9834 | arg, | |
9835 | NULL, 0, NULL, 1 /* parse arg */, | |
9836 | 0, bp_dprintf, | |
9837 | 0 /* Ignore count */, | |
9838 | pending_break_support, | |
9839 | &dprintf_breakpoint_ops, | |
9840 | from_tty, | |
9841 | 1 /* enabled */, | |
9842 | 0 /* internal */, | |
9843 | 0); | |
9844 | } | |
9845 | ||
d3ce09f5 SS |
9846 | static void |
9847 | agent_printf_command (char *arg, int from_tty) | |
9848 | { | |
9849 | error (_("May only run agent-printf on the target")); | |
9850 | } | |
9851 | ||
f1310107 TJB |
9852 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
9853 | ranged breakpoints. */ | |
9854 | ||
9855 | static int | |
9856 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
9857 | struct address_space *aspace, | |
09ac7c10 TT |
9858 | CORE_ADDR bp_addr, |
9859 | const struct target_waitstatus *ws) | |
f1310107 | 9860 | { |
09ac7c10 | 9861 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 9862 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
9863 | return 0; |
9864 | ||
f1310107 TJB |
9865 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9866 | bl->length, aspace, bp_addr); | |
9867 | } | |
9868 | ||
9869 | /* Implement the "resources_needed" breakpoint_ops method for | |
9870 | ranged breakpoints. */ | |
9871 | ||
9872 | static int | |
9873 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
9874 | { | |
9875 | return target_ranged_break_num_registers (); | |
9876 | } | |
9877 | ||
9878 | /* Implement the "print_it" breakpoint_ops method for | |
9879 | ranged breakpoints. */ | |
9880 | ||
9881 | static enum print_stop_action | |
348d480f | 9882 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 9883 | { |
348d480f | 9884 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 9885 | struct bp_location *bl = b->loc; |
79a45e25 | 9886 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9887 | |
9888 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9889 | ||
9890 | /* Ranged breakpoints have only one location. */ | |
9891 | gdb_assert (bl && bl->next == NULL); | |
9892 | ||
9893 | annotate_breakpoint (b->number); | |
9894 | if (b->disposition == disp_del) | |
9895 | ui_out_text (uiout, "\nTemporary ranged breakpoint "); | |
9896 | else | |
9897 | ui_out_text (uiout, "\nRanged breakpoint "); | |
9898 | if (ui_out_is_mi_like_p (uiout)) | |
9899 | { | |
9900 | ui_out_field_string (uiout, "reason", | |
9901 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
9902 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
9903 | } | |
9904 | ui_out_field_int (uiout, "bkptno", b->number); | |
9905 | ui_out_text (uiout, ", "); | |
9906 | ||
9907 | return PRINT_SRC_AND_LOC; | |
9908 | } | |
9909 | ||
9910 | /* Implement the "print_one" breakpoint_ops method for | |
9911 | ranged breakpoints. */ | |
9912 | ||
9913 | static void | |
9914 | print_one_ranged_breakpoint (struct breakpoint *b, | |
9915 | struct bp_location **last_loc) | |
9916 | { | |
9917 | struct bp_location *bl = b->loc; | |
9918 | struct value_print_options opts; | |
79a45e25 | 9919 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9920 | |
9921 | /* Ranged breakpoints have only one location. */ | |
9922 | gdb_assert (bl && bl->next == NULL); | |
9923 | ||
9924 | get_user_print_options (&opts); | |
9925 | ||
9926 | if (opts.addressprint) | |
9927 | /* We don't print the address range here, it will be printed later | |
9928 | by print_one_detail_ranged_breakpoint. */ | |
9929 | ui_out_field_skip (uiout, "addr"); | |
9930 | annotate_field (5); | |
9931 | print_breakpoint_location (b, bl); | |
9932 | *last_loc = bl; | |
9933 | } | |
9934 | ||
9935 | /* Implement the "print_one_detail" breakpoint_ops method for | |
9936 | ranged breakpoints. */ | |
9937 | ||
9938 | static void | |
9939 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
9940 | struct ui_out *uiout) | |
9941 | { | |
9942 | CORE_ADDR address_start, address_end; | |
9943 | struct bp_location *bl = b->loc; | |
f99d8bf4 PA |
9944 | struct ui_file *stb = mem_fileopen (); |
9945 | struct cleanup *cleanup = make_cleanup_ui_file_delete (stb); | |
f1310107 TJB |
9946 | |
9947 | gdb_assert (bl); | |
9948 | ||
9949 | address_start = bl->address; | |
9950 | address_end = address_start + bl->length - 1; | |
9951 | ||
9952 | ui_out_text (uiout, "\taddress range: "); | |
f99d8bf4 | 9953 | fprintf_unfiltered (stb, "[%s, %s]", |
f1310107 TJB |
9954 | print_core_address (bl->gdbarch, address_start), |
9955 | print_core_address (bl->gdbarch, address_end)); | |
9956 | ui_out_field_stream (uiout, "addr", stb); | |
9957 | ui_out_text (uiout, "\n"); | |
9958 | ||
9959 | do_cleanups (cleanup); | |
9960 | } | |
9961 | ||
9962 | /* Implement the "print_mention" breakpoint_ops method for | |
9963 | ranged breakpoints. */ | |
9964 | ||
9965 | static void | |
9966 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
9967 | { | |
9968 | struct bp_location *bl = b->loc; | |
79a45e25 | 9969 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9970 | |
9971 | gdb_assert (bl); | |
9972 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9973 | ||
9974 | if (ui_out_is_mi_like_p (uiout)) | |
9975 | return; | |
9976 | ||
9977 | printf_filtered (_("Hardware assisted ranged breakpoint %d from %s to %s."), | |
9978 | b->number, paddress (bl->gdbarch, bl->address), | |
9979 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
9980 | } | |
9981 | ||
9982 | /* Implement the "print_recreate" breakpoint_ops method for | |
9983 | ranged breakpoints. */ | |
9984 | ||
9985 | static void | |
9986 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
9987 | { | |
9988 | fprintf_unfiltered (fp, "break-range %s, %s", b->addr_string, | |
9989 | b->addr_string_range_end); | |
d9b3f62e | 9990 | print_recreate_thread (b, fp); |
f1310107 TJB |
9991 | } |
9992 | ||
9993 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
9994 | ||
2060206e | 9995 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
9996 | |
9997 | /* Find the address where the end of the breakpoint range should be | |
9998 | placed, given the SAL of the end of the range. This is so that if | |
9999 | the user provides a line number, the end of the range is set to the | |
10000 | last instruction of the given line. */ | |
10001 | ||
10002 | static CORE_ADDR | |
10003 | find_breakpoint_range_end (struct symtab_and_line sal) | |
10004 | { | |
10005 | CORE_ADDR end; | |
10006 | ||
10007 | /* If the user provided a PC value, use it. Otherwise, | |
10008 | find the address of the end of the given location. */ | |
10009 | if (sal.explicit_pc) | |
10010 | end = sal.pc; | |
10011 | else | |
10012 | { | |
10013 | int ret; | |
10014 | CORE_ADDR start; | |
10015 | ||
10016 | ret = find_line_pc_range (sal, &start, &end); | |
10017 | if (!ret) | |
10018 | error (_("Could not find location of the end of the range.")); | |
10019 | ||
10020 | /* find_line_pc_range returns the start of the next line. */ | |
10021 | end--; | |
10022 | } | |
10023 | ||
10024 | return end; | |
10025 | } | |
10026 | ||
10027 | /* Implement the "break-range" CLI command. */ | |
10028 | ||
10029 | static void | |
10030 | break_range_command (char *arg, int from_tty) | |
10031 | { | |
10032 | char *arg_start, *addr_string_start, *addr_string_end; | |
10033 | struct linespec_result canonical_start, canonical_end; | |
10034 | int bp_count, can_use_bp, length; | |
10035 | CORE_ADDR end; | |
10036 | struct breakpoint *b; | |
10037 | struct symtab_and_line sal_start, sal_end; | |
f1310107 | 10038 | struct cleanup *cleanup_bkpt; |
f8eba3c6 | 10039 | struct linespec_sals *lsal_start, *lsal_end; |
f1310107 TJB |
10040 | |
10041 | /* We don't support software ranged breakpoints. */ | |
10042 | if (target_ranged_break_num_registers () < 0) | |
10043 | error (_("This target does not support hardware ranged breakpoints.")); | |
10044 | ||
10045 | bp_count = hw_breakpoint_used_count (); | |
10046 | bp_count += target_ranged_break_num_registers (); | |
10047 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
10048 | bp_count, 0); | |
10049 | if (can_use_bp < 0) | |
10050 | error (_("Hardware breakpoints used exceeds limit.")); | |
10051 | ||
f8eba3c6 | 10052 | arg = skip_spaces (arg); |
f1310107 TJB |
10053 | if (arg == NULL || arg[0] == '\0') |
10054 | error(_("No address range specified.")); | |
10055 | ||
f1310107 TJB |
10056 | init_linespec_result (&canonical_start); |
10057 | ||
f8eba3c6 TT |
10058 | arg_start = arg; |
10059 | parse_breakpoint_sals (&arg, &canonical_start); | |
f1310107 | 10060 | |
f8eba3c6 | 10061 | cleanup_bkpt = make_cleanup_destroy_linespec_result (&canonical_start); |
f1310107 TJB |
10062 | |
10063 | if (arg[0] != ',') | |
10064 | error (_("Too few arguments.")); | |
f8eba3c6 | 10065 | else if (VEC_empty (linespec_sals, canonical_start.sals)) |
f1310107 | 10066 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 TT |
10067 | |
10068 | lsal_start = VEC_index (linespec_sals, canonical_start.sals, 0); | |
10069 | ||
10070 | if (VEC_length (linespec_sals, canonical_start.sals) > 1 | |
10071 | || lsal_start->sals.nelts != 1) | |
f1310107 TJB |
10072 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10073 | ||
f8eba3c6 TT |
10074 | sal_start = lsal_start->sals.sals[0]; |
10075 | addr_string_start = savestring (arg_start, arg - arg_start); | |
10076 | make_cleanup (xfree, addr_string_start); | |
f1310107 TJB |
10077 | |
10078 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 10079 | arg = skip_spaces (arg); |
f1310107 TJB |
10080 | |
10081 | /* Parse the end location. */ | |
10082 | ||
f1310107 TJB |
10083 | init_linespec_result (&canonical_end); |
10084 | arg_start = arg; | |
10085 | ||
f8eba3c6 | 10086 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
10087 | parse_breakpoint_sals because we need to specify the start location's |
10088 | symtab and line as the default symtab and line for the end of the | |
10089 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
10090 | where +14 means 14 lines from the start location. */ | |
f8eba3c6 TT |
10091 | decode_line_full (&arg, DECODE_LINE_FUNFIRSTLINE, |
10092 | sal_start.symtab, sal_start.line, | |
10093 | &canonical_end, NULL, NULL); | |
10094 | ||
10095 | make_cleanup_destroy_linespec_result (&canonical_end); | |
f1310107 | 10096 | |
f8eba3c6 | 10097 | if (VEC_empty (linespec_sals, canonical_end.sals)) |
f1310107 | 10098 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 TT |
10099 | |
10100 | lsal_end = VEC_index (linespec_sals, canonical_end.sals, 0); | |
10101 | if (VEC_length (linespec_sals, canonical_end.sals) > 1 | |
10102 | || lsal_end->sals.nelts != 1) | |
f1310107 TJB |
10103 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10104 | ||
f8eba3c6 TT |
10105 | sal_end = lsal_end->sals.sals[0]; |
10106 | addr_string_end = savestring (arg_start, arg - arg_start); | |
10107 | make_cleanup (xfree, addr_string_end); | |
f1310107 TJB |
10108 | |
10109 | end = find_breakpoint_range_end (sal_end); | |
10110 | if (sal_start.pc > end) | |
177b42fe | 10111 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
10112 | |
10113 | length = end - sal_start.pc + 1; | |
10114 | if (length < 0) | |
10115 | /* Length overflowed. */ | |
10116 | error (_("Address range too large.")); | |
10117 | else if (length == 1) | |
10118 | { | |
10119 | /* This range is simple enough to be handled by | |
10120 | the `hbreak' command. */ | |
10121 | hbreak_command (addr_string_start, 1); | |
10122 | ||
10123 | do_cleanups (cleanup_bkpt); | |
10124 | ||
10125 | return; | |
10126 | } | |
10127 | ||
10128 | /* Now set up the breakpoint. */ | |
10129 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 10130 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
10131 | set_breakpoint_count (breakpoint_count + 1); |
10132 | b->number = breakpoint_count; | |
10133 | b->disposition = disp_donttouch; | |
f8eba3c6 TT |
10134 | b->addr_string = xstrdup (addr_string_start); |
10135 | b->addr_string_range_end = xstrdup (addr_string_end); | |
f1310107 TJB |
10136 | b->loc->length = length; |
10137 | ||
f8eba3c6 | 10138 | do_cleanups (cleanup_bkpt); |
f1310107 TJB |
10139 | |
10140 | mention (b); | |
8d3788bd | 10141 | observer_notify_breakpoint_created (b); |
f1310107 TJB |
10142 | update_global_location_list (1); |
10143 | } | |
10144 | ||
4a64f543 MS |
10145 | /* Return non-zero if EXP is verified as constant. Returned zero |
10146 | means EXP is variable. Also the constant detection may fail for | |
10147 | some constant expressions and in such case still falsely return | |
10148 | zero. */ | |
2e6e3d9c | 10149 | |
65d79d4b SDJ |
10150 | static int |
10151 | watchpoint_exp_is_const (const struct expression *exp) | |
10152 | { | |
10153 | int i = exp->nelts; | |
10154 | ||
10155 | while (i > 0) | |
10156 | { | |
10157 | int oplenp, argsp; | |
10158 | ||
10159 | /* We are only interested in the descriptor of each element. */ | |
10160 | operator_length (exp, i, &oplenp, &argsp); | |
10161 | i -= oplenp; | |
10162 | ||
10163 | switch (exp->elts[i].opcode) | |
10164 | { | |
10165 | case BINOP_ADD: | |
10166 | case BINOP_SUB: | |
10167 | case BINOP_MUL: | |
10168 | case BINOP_DIV: | |
10169 | case BINOP_REM: | |
10170 | case BINOP_MOD: | |
10171 | case BINOP_LSH: | |
10172 | case BINOP_RSH: | |
10173 | case BINOP_LOGICAL_AND: | |
10174 | case BINOP_LOGICAL_OR: | |
10175 | case BINOP_BITWISE_AND: | |
10176 | case BINOP_BITWISE_IOR: | |
10177 | case BINOP_BITWISE_XOR: | |
10178 | case BINOP_EQUAL: | |
10179 | case BINOP_NOTEQUAL: | |
10180 | case BINOP_LESS: | |
10181 | case BINOP_GTR: | |
10182 | case BINOP_LEQ: | |
10183 | case BINOP_GEQ: | |
10184 | case BINOP_REPEAT: | |
10185 | case BINOP_COMMA: | |
10186 | case BINOP_EXP: | |
10187 | case BINOP_MIN: | |
10188 | case BINOP_MAX: | |
10189 | case BINOP_INTDIV: | |
10190 | case BINOP_CONCAT: | |
10191 | case BINOP_IN: | |
10192 | case BINOP_RANGE: | |
10193 | case TERNOP_COND: | |
10194 | case TERNOP_SLICE: | |
65d79d4b SDJ |
10195 | |
10196 | case OP_LONG: | |
10197 | case OP_DOUBLE: | |
10198 | case OP_DECFLOAT: | |
10199 | case OP_LAST: | |
10200 | case OP_COMPLEX: | |
10201 | case OP_STRING: | |
65d79d4b SDJ |
10202 | case OP_ARRAY: |
10203 | case OP_TYPE: | |
608b4967 TT |
10204 | case OP_TYPEOF: |
10205 | case OP_DECLTYPE: | |
65d79d4b SDJ |
10206 | case OP_NAME: |
10207 | case OP_OBJC_NSSTRING: | |
10208 | ||
10209 | case UNOP_NEG: | |
10210 | case UNOP_LOGICAL_NOT: | |
10211 | case UNOP_COMPLEMENT: | |
10212 | case UNOP_ADDR: | |
10213 | case UNOP_HIGH: | |
aeaa2474 | 10214 | case UNOP_CAST: |
9eaf6705 TT |
10215 | |
10216 | case UNOP_CAST_TYPE: | |
10217 | case UNOP_REINTERPRET_CAST: | |
10218 | case UNOP_DYNAMIC_CAST: | |
4a64f543 MS |
10219 | /* Unary, binary and ternary operators: We have to check |
10220 | their operands. If they are constant, then so is the | |
10221 | result of that operation. For instance, if A and B are | |
10222 | determined to be constants, then so is "A + B". | |
10223 | ||
10224 | UNOP_IND is one exception to the rule above, because the | |
10225 | value of *ADDR is not necessarily a constant, even when | |
10226 | ADDR is. */ | |
65d79d4b SDJ |
10227 | break; |
10228 | ||
10229 | case OP_VAR_VALUE: | |
10230 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 10231 | |
65d79d4b | 10232 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
10233 | possible that a buggy compiler could mark a variable as |
10234 | constant even when it is not, and TYPE_CONST would return | |
10235 | true in this case, while SYMBOL_CLASS wouldn't. | |
10236 | ||
10237 | We also have to check for function symbols because they | |
10238 | are always constant. */ | |
65d79d4b SDJ |
10239 | { |
10240 | struct symbol *s = exp->elts[i + 2].symbol; | |
10241 | ||
10242 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
10243 | && SYMBOL_CLASS (s) != LOC_CONST | |
10244 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
10245 | return 0; | |
10246 | break; | |
10247 | } | |
10248 | ||
10249 | /* The default action is to return 0 because we are using | |
10250 | the optimistic approach here: If we don't know something, | |
10251 | then it is not a constant. */ | |
10252 | default: | |
10253 | return 0; | |
10254 | } | |
10255 | } | |
10256 | ||
10257 | return 1; | |
10258 | } | |
10259 | ||
3a5c3e22 PA |
10260 | /* Implement the "dtor" breakpoint_ops method for watchpoints. */ |
10261 | ||
10262 | static void | |
10263 | dtor_watchpoint (struct breakpoint *self) | |
10264 | { | |
10265 | struct watchpoint *w = (struct watchpoint *) self; | |
10266 | ||
10267 | xfree (w->cond_exp); | |
10268 | xfree (w->exp); | |
10269 | xfree (w->exp_string); | |
10270 | xfree (w->exp_string_reparse); | |
10271 | value_free (w->val); | |
10272 | ||
10273 | base_breakpoint_ops.dtor (self); | |
10274 | } | |
10275 | ||
348d480f PA |
10276 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
10277 | ||
10278 | static void | |
10279 | re_set_watchpoint (struct breakpoint *b) | |
10280 | { | |
3a5c3e22 PA |
10281 | struct watchpoint *w = (struct watchpoint *) b; |
10282 | ||
348d480f PA |
10283 | /* Watchpoint can be either on expression using entirely global |
10284 | variables, or it can be on local variables. | |
10285 | ||
10286 | Watchpoints of the first kind are never auto-deleted, and even | |
10287 | persist across program restarts. Since they can use variables | |
10288 | from shared libraries, we need to reparse expression as libraries | |
10289 | are loaded and unloaded. | |
10290 | ||
10291 | Watchpoints on local variables can also change meaning as result | |
10292 | of solib event. For example, if a watchpoint uses both a local | |
10293 | and a global variables in expression, it's a local watchpoint, | |
10294 | but unloading of a shared library will make the expression | |
10295 | invalid. This is not a very common use case, but we still | |
10296 | re-evaluate expression, to avoid surprises to the user. | |
10297 | ||
10298 | Note that for local watchpoints, we re-evaluate it only if | |
10299 | watchpoints frame id is still valid. If it's not, it means the | |
10300 | watchpoint is out of scope and will be deleted soon. In fact, | |
10301 | I'm not sure we'll ever be called in this case. | |
10302 | ||
10303 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10304 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10305 | |
3a5c3e22 PA |
10306 | Don't do anything about disabled watchpoints, since they will be |
10307 | reevaluated again when enabled. */ | |
10308 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10309 | } |
10310 | ||
77b06cd7 TJB |
10311 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10312 | ||
10313 | static int | |
10314 | insert_watchpoint (struct bp_location *bl) | |
10315 | { | |
3a5c3e22 PA |
10316 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10317 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10318 | |
10319 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 10320 | w->cond_exp); |
77b06cd7 TJB |
10321 | } |
10322 | ||
10323 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10324 | ||
10325 | static int | |
10326 | remove_watchpoint (struct bp_location *bl) | |
10327 | { | |
3a5c3e22 PA |
10328 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10329 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10330 | |
10331 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 10332 | w->cond_exp); |
e09342b5 TJB |
10333 | } |
10334 | ||
e09342b5 | 10335 | static int |
348d480f | 10336 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
09ac7c10 TT |
10337 | struct address_space *aspace, CORE_ADDR bp_addr, |
10338 | const struct target_waitstatus *ws) | |
e09342b5 | 10339 | { |
348d480f | 10340 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10341 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10342 | |
348d480f PA |
10343 | /* Continuable hardware watchpoints are treated as non-existent if the |
10344 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10345 | some data address). Otherwise gdb won't stop on a break instruction | |
10346 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10347 | been defined. Also skip watchpoints which we know did not trigger | |
10348 | (did not match the data address). */ | |
10349 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10350 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10351 | return 0; |
9c06b0b4 | 10352 | |
348d480f | 10353 | return 1; |
9c06b0b4 TJB |
10354 | } |
10355 | ||
348d480f PA |
10356 | static void |
10357 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10358 | { |
348d480f | 10359 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10360 | |
348d480f | 10361 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10362 | } |
10363 | ||
10364 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10365 | hardware watchpoints. */ |
9c06b0b4 TJB |
10366 | |
10367 | static int | |
348d480f | 10368 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10369 | { |
3a5c3e22 PA |
10370 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10371 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10372 | |
10373 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10374 | } |
10375 | ||
10376 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10377 | hardware watchpoints. */ |
9c06b0b4 TJB |
10378 | |
10379 | static int | |
348d480f | 10380 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10381 | { |
efa80663 PA |
10382 | /* Read and access watchpoints only work with hardware support. */ |
10383 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10384 | } |
10385 | ||
9c06b0b4 | 10386 | static enum print_stop_action |
348d480f | 10387 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10388 | { |
348d480f PA |
10389 | struct cleanup *old_chain; |
10390 | struct breakpoint *b; | |
10391 | const struct bp_location *bl; | |
f99d8bf4 | 10392 | struct ui_file *stb; |
348d480f | 10393 | enum print_stop_action result; |
3a5c3e22 | 10394 | struct watchpoint *w; |
79a45e25 | 10395 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10396 | |
10397 | gdb_assert (bs->bp_location_at != NULL); | |
10398 | ||
10399 | bl = bs->bp_location_at; | |
10400 | b = bs->breakpoint_at; | |
3a5c3e22 | 10401 | w = (struct watchpoint *) b; |
348d480f | 10402 | |
f99d8bf4 PA |
10403 | stb = mem_fileopen (); |
10404 | old_chain = make_cleanup_ui_file_delete (stb); | |
9c06b0b4 TJB |
10405 | |
10406 | switch (b->type) | |
10407 | { | |
348d480f | 10408 | case bp_watchpoint: |
9c06b0b4 TJB |
10409 | case bp_hardware_watchpoint: |
10410 | annotate_watchpoint (b->number); | |
10411 | if (ui_out_is_mi_like_p (uiout)) | |
10412 | ui_out_field_string | |
10413 | (uiout, "reason", | |
10414 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10415 | mention (b); |
10416 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10417 | ui_out_text (uiout, "\nOld value = "); | |
f99d8bf4 | 10418 | watchpoint_value_print (bs->old_val, stb); |
348d480f PA |
10419 | ui_out_field_stream (uiout, "old", stb); |
10420 | ui_out_text (uiout, "\nNew value = "); | |
f99d8bf4 | 10421 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10422 | ui_out_field_stream (uiout, "new", stb); |
10423 | ui_out_text (uiout, "\n"); | |
10424 | /* More than one watchpoint may have been triggered. */ | |
10425 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10426 | break; |
10427 | ||
10428 | case bp_read_watchpoint: | |
10429 | if (ui_out_is_mi_like_p (uiout)) | |
10430 | ui_out_field_string | |
10431 | (uiout, "reason", | |
10432 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10433 | mention (b); |
10434 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10435 | ui_out_text (uiout, "\nValue = "); | |
f99d8bf4 | 10436 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10437 | ui_out_field_stream (uiout, "value", stb); |
10438 | ui_out_text (uiout, "\n"); | |
10439 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10440 | break; |
10441 | ||
10442 | case bp_access_watchpoint: | |
348d480f PA |
10443 | if (bs->old_val != NULL) |
10444 | { | |
10445 | annotate_watchpoint (b->number); | |
10446 | if (ui_out_is_mi_like_p (uiout)) | |
10447 | ui_out_field_string | |
10448 | (uiout, "reason", | |
10449 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10450 | mention (b); | |
10451 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10452 | ui_out_text (uiout, "\nOld value = "); | |
f99d8bf4 | 10453 | watchpoint_value_print (bs->old_val, stb); |
348d480f PA |
10454 | ui_out_field_stream (uiout, "old", stb); |
10455 | ui_out_text (uiout, "\nNew value = "); | |
10456 | } | |
10457 | else | |
10458 | { | |
10459 | mention (b); | |
10460 | if (ui_out_is_mi_like_p (uiout)) | |
10461 | ui_out_field_string | |
10462 | (uiout, "reason", | |
10463 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10464 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10465 | ui_out_text (uiout, "\nValue = "); | |
10466 | } | |
f99d8bf4 | 10467 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10468 | ui_out_field_stream (uiout, "new", stb); |
10469 | ui_out_text (uiout, "\n"); | |
10470 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10471 | break; |
10472 | default: | |
348d480f | 10473 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10474 | } |
10475 | ||
348d480f PA |
10476 | do_cleanups (old_chain); |
10477 | return result; | |
10478 | } | |
10479 | ||
10480 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10481 | watchpoints. */ | |
10482 | ||
10483 | static void | |
10484 | print_mention_watchpoint (struct breakpoint *b) | |
10485 | { | |
10486 | struct cleanup *ui_out_chain; | |
3a5c3e22 | 10487 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10488 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10489 | |
10490 | switch (b->type) | |
10491 | { | |
10492 | case bp_watchpoint: | |
10493 | ui_out_text (uiout, "Watchpoint "); | |
10494 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10495 | break; | |
10496 | case bp_hardware_watchpoint: | |
10497 | ui_out_text (uiout, "Hardware watchpoint "); | |
10498 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10499 | break; | |
10500 | case bp_read_watchpoint: | |
10501 | ui_out_text (uiout, "Hardware read watchpoint "); | |
10502 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
10503 | break; | |
10504 | case bp_access_watchpoint: | |
10505 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
10506 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
10507 | break; | |
10508 | default: | |
10509 | internal_error (__FILE__, __LINE__, | |
10510 | _("Invalid hardware watchpoint type.")); | |
10511 | } | |
10512 | ||
10513 | ui_out_field_int (uiout, "number", b->number); | |
10514 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 10515 | ui_out_field_string (uiout, "exp", w->exp_string); |
348d480f PA |
10516 | do_cleanups (ui_out_chain); |
10517 | } | |
10518 | ||
10519 | /* Implement the "print_recreate" breakpoint_ops method for | |
10520 | watchpoints. */ | |
10521 | ||
10522 | static void | |
10523 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10524 | { | |
3a5c3e22 PA |
10525 | struct watchpoint *w = (struct watchpoint *) b; |
10526 | ||
348d480f PA |
10527 | switch (b->type) |
10528 | { | |
10529 | case bp_watchpoint: | |
10530 | case bp_hardware_watchpoint: | |
10531 | fprintf_unfiltered (fp, "watch"); | |
10532 | break; | |
10533 | case bp_read_watchpoint: | |
10534 | fprintf_unfiltered (fp, "rwatch"); | |
10535 | break; | |
10536 | case bp_access_watchpoint: | |
10537 | fprintf_unfiltered (fp, "awatch"); | |
10538 | break; | |
10539 | default: | |
10540 | internal_error (__FILE__, __LINE__, | |
10541 | _("Invalid watchpoint type.")); | |
10542 | } | |
10543 | ||
3a5c3e22 | 10544 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10545 | print_recreate_thread (b, fp); |
348d480f PA |
10546 | } |
10547 | ||
10548 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ | |
10549 | ||
2060206e | 10550 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10551 | |
10552 | /* Implement the "insert" breakpoint_ops method for | |
10553 | masked hardware watchpoints. */ | |
10554 | ||
10555 | static int | |
10556 | insert_masked_watchpoint (struct bp_location *bl) | |
10557 | { | |
3a5c3e22 PA |
10558 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10559 | ||
10560 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10561 | bl->watchpoint_type); |
10562 | } | |
10563 | ||
10564 | /* Implement the "remove" breakpoint_ops method for | |
10565 | masked hardware watchpoints. */ | |
10566 | ||
10567 | static int | |
10568 | remove_masked_watchpoint (struct bp_location *bl) | |
10569 | { | |
3a5c3e22 PA |
10570 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10571 | ||
10572 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10573 | bl->watchpoint_type); |
10574 | } | |
10575 | ||
10576 | /* Implement the "resources_needed" breakpoint_ops method for | |
10577 | masked hardware watchpoints. */ | |
10578 | ||
10579 | static int | |
10580 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10581 | { | |
3a5c3e22 PA |
10582 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10583 | ||
10584 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10585 | } |
10586 | ||
10587 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10588 | masked hardware watchpoints. */ | |
10589 | ||
10590 | static int | |
10591 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10592 | { | |
10593 | return 0; | |
10594 | } | |
10595 | ||
10596 | /* Implement the "print_it" breakpoint_ops method for | |
10597 | masked hardware watchpoints. */ | |
10598 | ||
10599 | static enum print_stop_action | |
10600 | print_it_masked_watchpoint (bpstat bs) | |
10601 | { | |
10602 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10603 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10604 | |
10605 | /* Masked watchpoints have only one location. */ | |
10606 | gdb_assert (b->loc && b->loc->next == NULL); | |
10607 | ||
10608 | switch (b->type) | |
10609 | { | |
10610 | case bp_hardware_watchpoint: | |
10611 | annotate_watchpoint (b->number); | |
10612 | if (ui_out_is_mi_like_p (uiout)) | |
10613 | ui_out_field_string | |
10614 | (uiout, "reason", | |
10615 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
10616 | break; | |
10617 | ||
10618 | case bp_read_watchpoint: | |
10619 | if (ui_out_is_mi_like_p (uiout)) | |
10620 | ui_out_field_string | |
10621 | (uiout, "reason", | |
10622 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
10623 | break; | |
10624 | ||
10625 | case bp_access_watchpoint: | |
10626 | if (ui_out_is_mi_like_p (uiout)) | |
10627 | ui_out_field_string | |
10628 | (uiout, "reason", | |
10629 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10630 | break; | |
10631 | default: | |
10632 | internal_error (__FILE__, __LINE__, | |
10633 | _("Invalid hardware watchpoint type.")); | |
10634 | } | |
10635 | ||
10636 | mention (b); | |
9c06b0b4 TJB |
10637 | ui_out_text (uiout, _("\n\ |
10638 | Check the underlying instruction at PC for the memory\n\ | |
10639 | address and value which triggered this watchpoint.\n")); | |
10640 | ui_out_text (uiout, "\n"); | |
10641 | ||
10642 | /* More than one watchpoint may have been triggered. */ | |
10643 | return PRINT_UNKNOWN; | |
10644 | } | |
10645 | ||
10646 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10647 | masked hardware watchpoints. */ | |
10648 | ||
10649 | static void | |
10650 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10651 | struct ui_out *uiout) | |
10652 | { | |
3a5c3e22 PA |
10653 | struct watchpoint *w = (struct watchpoint *) b; |
10654 | ||
9c06b0b4 TJB |
10655 | /* Masked watchpoints have only one location. */ |
10656 | gdb_assert (b->loc && b->loc->next == NULL); | |
10657 | ||
10658 | ui_out_text (uiout, "\tmask "); | |
3a5c3e22 | 10659 | ui_out_field_core_addr (uiout, "mask", b->loc->gdbarch, w->hw_wp_mask); |
9c06b0b4 TJB |
10660 | ui_out_text (uiout, "\n"); |
10661 | } | |
10662 | ||
10663 | /* Implement the "print_mention" breakpoint_ops method for | |
10664 | masked hardware watchpoints. */ | |
10665 | ||
10666 | static void | |
10667 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10668 | { | |
3a5c3e22 | 10669 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10670 | struct ui_out *uiout = current_uiout; |
9c06b0b4 TJB |
10671 | struct cleanup *ui_out_chain; |
10672 | ||
10673 | switch (b->type) | |
10674 | { | |
10675 | case bp_hardware_watchpoint: | |
10676 | ui_out_text (uiout, "Masked hardware watchpoint "); | |
10677 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10678 | break; | |
10679 | case bp_read_watchpoint: | |
10680 | ui_out_text (uiout, "Masked hardware read watchpoint "); | |
10681 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
10682 | break; | |
10683 | case bp_access_watchpoint: | |
10684 | ui_out_text (uiout, "Masked hardware access (read/write) watchpoint "); | |
10685 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
10686 | break; | |
10687 | default: | |
10688 | internal_error (__FILE__, __LINE__, | |
10689 | _("Invalid hardware watchpoint type.")); | |
10690 | } | |
10691 | ||
10692 | ui_out_field_int (uiout, "number", b->number); | |
10693 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 10694 | ui_out_field_string (uiout, "exp", w->exp_string); |
9c06b0b4 TJB |
10695 | do_cleanups (ui_out_chain); |
10696 | } | |
10697 | ||
10698 | /* Implement the "print_recreate" breakpoint_ops method for | |
10699 | masked hardware watchpoints. */ | |
10700 | ||
10701 | static void | |
10702 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10703 | { | |
3a5c3e22 | 10704 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10705 | char tmp[40]; |
10706 | ||
10707 | switch (b->type) | |
10708 | { | |
10709 | case bp_hardware_watchpoint: | |
10710 | fprintf_unfiltered (fp, "watch"); | |
10711 | break; | |
10712 | case bp_read_watchpoint: | |
10713 | fprintf_unfiltered (fp, "rwatch"); | |
10714 | break; | |
10715 | case bp_access_watchpoint: | |
10716 | fprintf_unfiltered (fp, "awatch"); | |
10717 | break; | |
10718 | default: | |
10719 | internal_error (__FILE__, __LINE__, | |
10720 | _("Invalid hardware watchpoint type.")); | |
10721 | } | |
10722 | ||
3a5c3e22 PA |
10723 | sprintf_vma (tmp, w->hw_wp_mask); |
10724 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 10725 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10726 | } |
10727 | ||
10728 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10729 | ||
2060206e | 10730 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10731 | |
10732 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10733 | ||
10734 | static int | |
10735 | is_masked_watchpoint (const struct breakpoint *b) | |
10736 | { | |
10737 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10738 | } | |
10739 | ||
53a5351d JM |
10740 | /* accessflag: hw_write: watch write, |
10741 | hw_read: watch read, | |
10742 | hw_access: watch access (read or write) */ | |
c906108c | 10743 | static void |
84f4c1fe PM |
10744 | watch_command_1 (char *arg, int accessflag, int from_tty, |
10745 | int just_location, int internal) | |
c906108c | 10746 | { |
a9634178 | 10747 | volatile struct gdb_exception e; |
d983da9c | 10748 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c | 10749 | struct expression *exp; |
60e1c644 | 10750 | struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
a1442452 | 10751 | struct value *val, *mark, *result; |
c906108c | 10752 | struct frame_info *frame; |
c906108c SS |
10753 | char *exp_start = NULL; |
10754 | char *exp_end = NULL; | |
9c06b0b4 TJB |
10755 | char *tok, *end_tok; |
10756 | int toklen = -1; | |
c906108c SS |
10757 | char *cond_start = NULL; |
10758 | char *cond_end = NULL; | |
c906108c | 10759 | enum bptype bp_type; |
37e4754d | 10760 | int thread = -1; |
0cf6dd15 | 10761 | int pc = 0; |
9c06b0b4 TJB |
10762 | /* Flag to indicate whether we are going to use masks for |
10763 | the hardware watchpoint. */ | |
10764 | int use_mask = 0; | |
10765 | CORE_ADDR mask = 0; | |
3a5c3e22 | 10766 | struct watchpoint *w; |
c906108c | 10767 | |
37e4754d LM |
10768 | /* Make sure that we actually have parameters to parse. */ |
10769 | if (arg != NULL && arg[0] != '\0') | |
10770 | { | |
9c06b0b4 | 10771 | char *value_start; |
37e4754d | 10772 | |
9c06b0b4 TJB |
10773 | /* Look for "parameter value" pairs at the end |
10774 | of the arguments string. */ | |
10775 | for (tok = arg + strlen (arg) - 1; tok > arg; tok--) | |
10776 | { | |
10777 | /* Skip whitespace at the end of the argument list. */ | |
10778 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10779 | tok--; | |
10780 | ||
10781 | /* Find the beginning of the last token. | |
10782 | This is the value of the parameter. */ | |
10783 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10784 | tok--; | |
10785 | value_start = tok + 1; | |
10786 | ||
10787 | /* Skip whitespace. */ | |
10788 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10789 | tok--; | |
10790 | ||
10791 | end_tok = tok; | |
10792 | ||
10793 | /* Find the beginning of the second to last token. | |
10794 | This is the parameter itself. */ | |
10795 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10796 | tok--; | |
10797 | tok++; | |
10798 | toklen = end_tok - tok + 1; | |
10799 | ||
10800 | if (toklen == 6 && !strncmp (tok, "thread", 6)) | |
10801 | { | |
10802 | /* At this point we've found a "thread" token, which means | |
10803 | the user is trying to set a watchpoint that triggers | |
10804 | only in a specific thread. */ | |
10805 | char *endp; | |
37e4754d | 10806 | |
9c06b0b4 TJB |
10807 | if (thread != -1) |
10808 | error(_("You can specify only one thread.")); | |
37e4754d | 10809 | |
9c06b0b4 TJB |
10810 | /* Extract the thread ID from the next token. */ |
10811 | thread = strtol (value_start, &endp, 0); | |
37e4754d | 10812 | |
9c06b0b4 TJB |
10813 | /* Check if the user provided a valid numeric value for the |
10814 | thread ID. */ | |
10815 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
10816 | error (_("Invalid thread ID specification %s."), value_start); | |
10817 | ||
10818 | /* Check if the thread actually exists. */ | |
10819 | if (!valid_thread_id (thread)) | |
af4908ba | 10820 | invalid_thread_id_error (thread); |
9c06b0b4 TJB |
10821 | } |
10822 | else if (toklen == 4 && !strncmp (tok, "mask", 4)) | |
10823 | { | |
10824 | /* We've found a "mask" token, which means the user wants to | |
10825 | create a hardware watchpoint that is going to have the mask | |
10826 | facility. */ | |
10827 | struct value *mask_value, *mark; | |
37e4754d | 10828 | |
9c06b0b4 TJB |
10829 | if (use_mask) |
10830 | error(_("You can specify only one mask.")); | |
37e4754d | 10831 | |
9c06b0b4 | 10832 | use_mask = just_location = 1; |
37e4754d | 10833 | |
9c06b0b4 TJB |
10834 | mark = value_mark (); |
10835 | mask_value = parse_to_comma_and_eval (&value_start); | |
10836 | mask = value_as_address (mask_value); | |
10837 | value_free_to_mark (mark); | |
10838 | } | |
10839 | else | |
10840 | /* We didn't recognize what we found. We should stop here. */ | |
10841 | break; | |
37e4754d | 10842 | |
9c06b0b4 TJB |
10843 | /* Truncate the string and get rid of the "parameter value" pair before |
10844 | the arguments string is parsed by the parse_exp_1 function. */ | |
10845 | *tok = '\0'; | |
10846 | } | |
37e4754d LM |
10847 | } |
10848 | ||
10849 | /* Parse the rest of the arguments. */ | |
c906108c SS |
10850 | innermost_block = NULL; |
10851 | exp_start = arg; | |
1bb9788d | 10852 | exp = parse_exp_1 (&arg, 0, 0, 0); |
c906108c | 10853 | exp_end = arg; |
fa8a61dc TT |
10854 | /* Remove trailing whitespace from the expression before saving it. |
10855 | This makes the eventual display of the expression string a bit | |
10856 | prettier. */ | |
10857 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10858 | --exp_end; | |
10859 | ||
65d79d4b SDJ |
10860 | /* Checking if the expression is not constant. */ |
10861 | if (watchpoint_exp_is_const (exp)) | |
10862 | { | |
10863 | int len; | |
10864 | ||
10865 | len = exp_end - exp_start; | |
10866 | while (len > 0 && isspace (exp_start[len - 1])) | |
10867 | len--; | |
10868 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10869 | } | |
10870 | ||
c906108c SS |
10871 | exp_valid_block = innermost_block; |
10872 | mark = value_mark (); | |
a1442452 | 10873 | fetch_subexp_value (exp, &pc, &val, &result, NULL); |
06a64a0b TT |
10874 | |
10875 | if (just_location) | |
10876 | { | |
9c06b0b4 TJB |
10877 | int ret; |
10878 | ||
06a64a0b | 10879 | exp_valid_block = NULL; |
a1442452 | 10880 | val = value_addr (result); |
06a64a0b TT |
10881 | release_value (val); |
10882 | value_free_to_mark (mark); | |
9c06b0b4 TJB |
10883 | |
10884 | if (use_mask) | |
10885 | { | |
10886 | ret = target_masked_watch_num_registers (value_as_address (val), | |
10887 | mask); | |
10888 | if (ret == -1) | |
10889 | error (_("This target does not support masked watchpoints.")); | |
10890 | else if (ret == -2) | |
10891 | error (_("Invalid mask or memory region.")); | |
10892 | } | |
06a64a0b TT |
10893 | } |
10894 | else if (val != NULL) | |
fa4727a6 | 10895 | release_value (val); |
c906108c | 10896 | |
e9cafbcc TT |
10897 | tok = skip_spaces (arg); |
10898 | end_tok = skip_to_space (tok); | |
c906108c SS |
10899 | |
10900 | toklen = end_tok - tok; | |
10901 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10902 | { | |
2d134ed3 PA |
10903 | struct expression *cond; |
10904 | ||
60e1c644 | 10905 | innermost_block = NULL; |
c906108c | 10906 | tok = cond_start = end_tok + 1; |
1bb9788d | 10907 | cond = parse_exp_1 (&tok, 0, 0, 0); |
60e1c644 PA |
10908 | |
10909 | /* The watchpoint expression may not be local, but the condition | |
10910 | may still be. E.g.: `watch global if local > 0'. */ | |
10911 | cond_exp_valid_block = innermost_block; | |
10912 | ||
2d134ed3 | 10913 | xfree (cond); |
c906108c SS |
10914 | cond_end = tok; |
10915 | } | |
10916 | if (*tok) | |
8a3fe4f8 | 10917 | error (_("Junk at end of command.")); |
c906108c | 10918 | |
53a5351d | 10919 | if (accessflag == hw_read) |
c5aa993b | 10920 | bp_type = bp_read_watchpoint; |
53a5351d | 10921 | else if (accessflag == hw_access) |
c5aa993b JM |
10922 | bp_type = bp_access_watchpoint; |
10923 | else | |
10924 | bp_type = bp_hardware_watchpoint; | |
c906108c | 10925 | |
d983da9c | 10926 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
10927 | |
10928 | /* If the expression is "local", then set up a "watchpoint scope" | |
10929 | breakpoint at the point where we've left the scope of the watchpoint | |
10930 | expression. Create the scope breakpoint before the watchpoint, so | |
10931 | that we will encounter it first in bpstat_stop_status. */ | |
60e1c644 | 10932 | if (exp_valid_block && frame) |
d983da9c | 10933 | { |
edb3359d DJ |
10934 | if (frame_id_p (frame_unwind_caller_id (frame))) |
10935 | { | |
10936 | scope_breakpoint | |
a6d9a66e UW |
10937 | = create_internal_breakpoint (frame_unwind_caller_arch (frame), |
10938 | frame_unwind_caller_pc (frame), | |
06edf0c0 PA |
10939 | bp_watchpoint_scope, |
10940 | &momentary_breakpoint_ops); | |
d983da9c | 10941 | |
edb3359d | 10942 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10943 | |
edb3359d DJ |
10944 | /* Automatically delete the breakpoint when it hits. */ |
10945 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10946 | |
edb3359d DJ |
10947 | /* Only break in the proper frame (help with recursion). */ |
10948 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 10949 | |
edb3359d | 10950 | /* Set the address at which we will stop. */ |
a6d9a66e UW |
10951 | scope_breakpoint->loc->gdbarch |
10952 | = frame_unwind_caller_arch (frame); | |
edb3359d DJ |
10953 | scope_breakpoint->loc->requested_address |
10954 | = frame_unwind_caller_pc (frame); | |
10955 | scope_breakpoint->loc->address | |
a6d9a66e UW |
10956 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10957 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
10958 | scope_breakpoint->type); |
10959 | } | |
d983da9c DJ |
10960 | } |
10961 | ||
c906108c | 10962 | /* Now set up the breakpoint. */ |
3a5c3e22 PA |
10963 | |
10964 | w = XCNEW (struct watchpoint); | |
10965 | b = &w->base; | |
348d480f | 10966 | if (use_mask) |
3a5c3e22 PA |
10967 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
10968 | &masked_watchpoint_breakpoint_ops); | |
348d480f | 10969 | else |
3a5c3e22 PA |
10970 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
10971 | &watchpoint_breakpoint_ops); | |
37e4754d | 10972 | b->thread = thread; |
b5de0fa7 | 10973 | b->disposition = disp_donttouch; |
348d480f | 10974 | b->pspace = current_program_space; |
3a5c3e22 PA |
10975 | w->exp = exp; |
10976 | w->exp_valid_block = exp_valid_block; | |
10977 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10978 | if (just_location) |
10979 | { | |
10980 | struct type *t = value_type (val); | |
10981 | CORE_ADDR addr = value_as_address (val); | |
10982 | char *name; | |
10983 | ||
10984 | t = check_typedef (TYPE_TARGET_TYPE (check_typedef (t))); | |
10985 | name = type_to_string (t); | |
10986 | ||
3a5c3e22 | 10987 | w->exp_string_reparse = xstrprintf ("* (%s *) %s", name, |
d63d0675 | 10988 | core_addr_to_string (addr)); |
06a64a0b TT |
10989 | xfree (name); |
10990 | ||
3a5c3e22 | 10991 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 JK |
10992 | (int) (exp_end - exp_start), exp_start); |
10993 | ||
06a64a0b TT |
10994 | /* The above expression is in C. */ |
10995 | b->language = language_c; | |
10996 | } | |
10997 | else | |
3a5c3e22 | 10998 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
10999 | |
11000 | if (use_mask) | |
11001 | { | |
3a5c3e22 | 11002 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
11003 | } |
11004 | else | |
11005 | { | |
3a5c3e22 PA |
11006 | w->val = val; |
11007 | w->val_valid = 1; | |
9c06b0b4 | 11008 | } |
77b06cd7 | 11009 | |
c906108c SS |
11010 | if (cond_start) |
11011 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
11012 | else | |
11013 | b->cond_string = 0; | |
c5aa993b | 11014 | |
c906108c | 11015 | if (frame) |
f6bc2008 | 11016 | { |
3a5c3e22 PA |
11017 | w->watchpoint_frame = get_frame_id (frame); |
11018 | w->watchpoint_thread = inferior_ptid; | |
f6bc2008 | 11019 | } |
c906108c | 11020 | else |
f6bc2008 | 11021 | { |
3a5c3e22 PA |
11022 | w->watchpoint_frame = null_frame_id; |
11023 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 11024 | } |
c906108c | 11025 | |
d983da9c | 11026 | if (scope_breakpoint != NULL) |
c906108c | 11027 | { |
d983da9c DJ |
11028 | /* The scope breakpoint is related to the watchpoint. We will |
11029 | need to act on them together. */ | |
11030 | b->related_breakpoint = scope_breakpoint; | |
11031 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 11032 | } |
d983da9c | 11033 | |
06a64a0b TT |
11034 | if (!just_location) |
11035 | value_free_to_mark (mark); | |
2d134ed3 | 11036 | |
a9634178 TJB |
11037 | TRY_CATCH (e, RETURN_MASK_ALL) |
11038 | { | |
11039 | /* Finally update the new watchpoint. This creates the locations | |
11040 | that should be inserted. */ | |
3a5c3e22 | 11041 | update_watchpoint (w, 1); |
a9634178 TJB |
11042 | } |
11043 | if (e.reason < 0) | |
11044 | { | |
11045 | delete_breakpoint (b); | |
11046 | throw_exception (e); | |
11047 | } | |
11048 | ||
3ea46bff | 11049 | install_breakpoint (internal, b, 1); |
c906108c SS |
11050 | } |
11051 | ||
e09342b5 | 11052 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 11053 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 11054 | |
c906108c | 11055 | static int |
a9634178 | 11056 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
11057 | { |
11058 | int found_memory_cnt = 0; | |
2e70b7b9 | 11059 | struct value *head = v; |
c906108c SS |
11060 | |
11061 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 11062 | if (!can_use_hw_watchpoints) |
c906108c | 11063 | return 0; |
c5aa993b | 11064 | |
5c44784c JM |
11065 | /* Make sure that the value of the expression depends only upon |
11066 | memory contents, and values computed from them within GDB. If we | |
11067 | find any register references or function calls, we can't use a | |
11068 | hardware watchpoint. | |
11069 | ||
11070 | The idea here is that evaluating an expression generates a series | |
11071 | of values, one holding the value of every subexpression. (The | |
11072 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
11073 | a*b+c.) GDB's values hold almost enough information to establish | |
11074 | the criteria given above --- they identify memory lvalues, | |
11075 | register lvalues, computed values, etcetera. So we can evaluate | |
11076 | the expression, and then scan the chain of values that leaves | |
11077 | behind to decide whether we can detect any possible change to the | |
11078 | expression's final value using only hardware watchpoints. | |
11079 | ||
11080 | However, I don't think that the values returned by inferior | |
11081 | function calls are special in any way. So this function may not | |
11082 | notice that an expression involving an inferior function call | |
11083 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 11084 | for (; v; v = value_next (v)) |
c906108c | 11085 | { |
5c44784c | 11086 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 11087 | { |
8464be76 DJ |
11088 | if (v != head && value_lazy (v)) |
11089 | /* A lazy memory lvalue in the chain is one that GDB never | |
11090 | needed to fetch; we either just used its address (e.g., | |
11091 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
11092 | in `a,b'). This doesn't apply to HEAD; if that is | |
11093 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 11094 | ; |
53a5351d | 11095 | else |
5c44784c JM |
11096 | { |
11097 | /* Ahh, memory we actually used! Check if we can cover | |
11098 | it with hardware watchpoints. */ | |
df407dfe | 11099 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
11100 | |
11101 | /* We only watch structs and arrays if user asked for it | |
11102 | explicitly, never if they just happen to appear in a | |
11103 | middle of some value chain. */ | |
11104 | if (v == head | |
11105 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
11106 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
11107 | { | |
42ae5230 | 11108 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
11109 | int len; |
11110 | int num_regs; | |
11111 | ||
a9634178 | 11112 | len = (target_exact_watchpoints |
e09342b5 TJB |
11113 | && is_scalar_type_recursive (vtype))? |
11114 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 11115 | |
e09342b5 TJB |
11116 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
11117 | if (!num_regs) | |
2e70b7b9 MS |
11118 | return 0; |
11119 | else | |
e09342b5 | 11120 | found_memory_cnt += num_regs; |
2e70b7b9 | 11121 | } |
5c44784c | 11122 | } |
c5aa993b | 11123 | } |
5086187c AC |
11124 | else if (VALUE_LVAL (v) != not_lval |
11125 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 11126 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 11127 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 11128 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
11129 | } |
11130 | ||
11131 | /* The expression itself looks suitable for using a hardware | |
11132 | watchpoint, but give the target machine a chance to reject it. */ | |
11133 | return found_memory_cnt; | |
11134 | } | |
11135 | ||
8b93c638 | 11136 | void |
84f4c1fe | 11137 | watch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11138 | { |
84f4c1fe | 11139 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
11140 | } |
11141 | ||
06a64a0b TT |
11142 | /* A helper function that looks for the "-location" argument and then |
11143 | calls watch_command_1. */ | |
11144 | ||
11145 | static void | |
11146 | watch_maybe_just_location (char *arg, int accessflag, int from_tty) | |
11147 | { | |
11148 | int just_location = 0; | |
11149 | ||
11150 | if (arg | |
11151 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
11152 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
11153 | { | |
e9cafbcc | 11154 | arg = skip_spaces (arg); |
06a64a0b TT |
11155 | just_location = 1; |
11156 | } | |
11157 | ||
84f4c1fe | 11158 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 11159 | } |
8926118c | 11160 | |
c5aa993b | 11161 | static void |
fba45db2 | 11162 | watch_command (char *arg, int from_tty) |
c906108c | 11163 | { |
06a64a0b | 11164 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
11165 | } |
11166 | ||
8b93c638 | 11167 | void |
84f4c1fe | 11168 | rwatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11169 | { |
84f4c1fe | 11170 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 11171 | } |
8926118c | 11172 | |
c5aa993b | 11173 | static void |
fba45db2 | 11174 | rwatch_command (char *arg, int from_tty) |
c906108c | 11175 | { |
06a64a0b | 11176 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
11177 | } |
11178 | ||
8b93c638 | 11179 | void |
84f4c1fe | 11180 | awatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11181 | { |
84f4c1fe | 11182 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 11183 | } |
8926118c | 11184 | |
c5aa993b | 11185 | static void |
fba45db2 | 11186 | awatch_command (char *arg, int from_tty) |
c906108c | 11187 | { |
06a64a0b | 11188 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 11189 | } |
c906108c | 11190 | \f |
c5aa993b | 11191 | |
43ff13b4 | 11192 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
11193 | because it uses the mechanisms of breakpoints. */ |
11194 | ||
bfec99b2 PA |
11195 | struct until_break_command_continuation_args |
11196 | { | |
11197 | struct breakpoint *breakpoint; | |
11198 | struct breakpoint *breakpoint2; | |
186c406b | 11199 | int thread_num; |
bfec99b2 PA |
11200 | }; |
11201 | ||
43ff13b4 | 11202 | /* This function is called by fetch_inferior_event via the |
4a64f543 | 11203 | cmd_continuation pointer, to complete the until command. It takes |
43ff13b4 | 11204 | care of cleaning up the temporary breakpoints set up by the until |
4a64f543 | 11205 | command. */ |
c2c6d25f | 11206 | static void |
fa4cd53f | 11207 | until_break_command_continuation (void *arg, int err) |
43ff13b4 | 11208 | { |
bfec99b2 PA |
11209 | struct until_break_command_continuation_args *a = arg; |
11210 | ||
11211 | delete_breakpoint (a->breakpoint); | |
11212 | if (a->breakpoint2) | |
11213 | delete_breakpoint (a->breakpoint2); | |
186c406b | 11214 | delete_longjmp_breakpoint (a->thread_num); |
43ff13b4 JM |
11215 | } |
11216 | ||
c906108c | 11217 | void |
ae66c1fc | 11218 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
11219 | { |
11220 | struct symtabs_and_lines sals; | |
11221 | struct symtab_and_line sal; | |
8556afb4 PA |
11222 | struct frame_info *frame; |
11223 | struct gdbarch *frame_gdbarch; | |
11224 | struct frame_id stack_frame_id; | |
11225 | struct frame_id caller_frame_id; | |
c906108c | 11226 | struct breakpoint *breakpoint; |
f107f563 | 11227 | struct breakpoint *breakpoint2 = NULL; |
c906108c | 11228 | struct cleanup *old_chain; |
186c406b TT |
11229 | int thread; |
11230 | struct thread_info *tp; | |
c906108c SS |
11231 | |
11232 | clear_proceed_status (); | |
11233 | ||
11234 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11235 | this function. */ |
c5aa993b | 11236 | |
1bfeeb0f | 11237 | if (last_displayed_sal_is_valid ()) |
f8eba3c6 | 11238 | sals = decode_line_1 (&arg, DECODE_LINE_FUNFIRSTLINE, |
1bfeeb0f | 11239 | get_last_displayed_symtab (), |
f8eba3c6 | 11240 | get_last_displayed_line ()); |
c906108c | 11241 | else |
f8eba3c6 TT |
11242 | sals = decode_line_1 (&arg, DECODE_LINE_FUNFIRSTLINE, |
11243 | (struct symtab *) NULL, 0); | |
c5aa993b | 11244 | |
c906108c | 11245 | if (sals.nelts != 1) |
8a3fe4f8 | 11246 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11247 | |
c906108c | 11248 | sal = sals.sals[0]; |
4a64f543 | 11249 | xfree (sals.sals); /* malloc'd, so freed. */ |
c5aa993b | 11250 | |
c906108c | 11251 | if (*arg) |
8a3fe4f8 | 11252 | error (_("Junk at end of arguments.")); |
c5aa993b | 11253 | |
c906108c | 11254 | resolve_sal_pc (&sal); |
c5aa993b | 11255 | |
186c406b TT |
11256 | tp = inferior_thread (); |
11257 | thread = tp->num; | |
11258 | ||
883bc8d1 PA |
11259 | old_chain = make_cleanup (null_cleanup, NULL); |
11260 | ||
8556afb4 PA |
11261 | /* Note linespec handling above invalidates the frame chain. |
11262 | Installing a breakpoint also invalidates the frame chain (as it | |
11263 | may need to switch threads), so do any frame handling before | |
11264 | that. */ | |
11265 | ||
11266 | frame = get_selected_frame (NULL); | |
11267 | frame_gdbarch = get_frame_arch (frame); | |
11268 | stack_frame_id = get_stack_frame_id (frame); | |
11269 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11270 | |
ae66c1fc EZ |
11271 | /* Keep within the current frame, or in frames called by the current |
11272 | one. */ | |
edb3359d | 11273 | |
883bc8d1 | 11274 | if (frame_id_p (caller_frame_id)) |
c906108c | 11275 | { |
883bc8d1 PA |
11276 | struct symtab_and_line sal2; |
11277 | ||
11278 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11279 | sal2.pc = frame_unwind_caller_pc (frame); | |
a6d9a66e | 11280 | breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame), |
883bc8d1 PA |
11281 | sal2, |
11282 | caller_frame_id, | |
f107f563 VP |
11283 | bp_until); |
11284 | make_cleanup_delete_breakpoint (breakpoint2); | |
186c406b | 11285 | |
883bc8d1 | 11286 | set_longjmp_breakpoint (tp, caller_frame_id); |
186c406b | 11287 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); |
c906108c | 11288 | } |
c5aa993b | 11289 | |
c70a6932 JK |
11290 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11291 | frame = NULL; | |
11292 | ||
883bc8d1 PA |
11293 | if (anywhere) |
11294 | /* If the user told us to continue until a specified location, | |
11295 | we don't specify a frame at which we need to stop. */ | |
11296 | breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, | |
11297 | null_frame_id, bp_until); | |
11298 | else | |
11299 | /* Otherwise, specify the selected frame, because we want to stop | |
11300 | only at the very same frame. */ | |
11301 | breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, | |
11302 | stack_frame_id, bp_until); | |
11303 | make_cleanup_delete_breakpoint (breakpoint); | |
11304 | ||
a493e3e2 | 11305 | proceed (-1, GDB_SIGNAL_DEFAULT, 0); |
f107f563 | 11306 | |
4a64f543 MS |
11307 | /* If we are running asynchronously, and proceed call above has |
11308 | actually managed to start the target, arrange for breakpoints to | |
11309 | be deleted when the target stops. Otherwise, we're already | |
11310 | stopped and delete breakpoints via cleanup chain. */ | |
f107f563 | 11311 | |
8ea051c5 | 11312 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 11313 | { |
bfec99b2 PA |
11314 | struct until_break_command_continuation_args *args; |
11315 | args = xmalloc (sizeof (*args)); | |
f107f563 | 11316 | |
bfec99b2 PA |
11317 | args->breakpoint = breakpoint; |
11318 | args->breakpoint2 = breakpoint2; | |
186c406b | 11319 | args->thread_num = thread; |
f107f563 VP |
11320 | |
11321 | discard_cleanups (old_chain); | |
95e54da7 PA |
11322 | add_continuation (inferior_thread (), |
11323 | until_break_command_continuation, args, | |
604ead4a | 11324 | xfree); |
f107f563 VP |
11325 | } |
11326 | else | |
c5aa993b | 11327 | do_cleanups (old_chain); |
c906108c | 11328 | } |
ae66c1fc | 11329 | |
c906108c SS |
11330 | /* This function attempts to parse an optional "if <cond>" clause |
11331 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11332 | |
c906108c SS |
11333 | Else, it returns a pointer to the condition string. (It does not |
11334 | attempt to evaluate the string against a particular block.) And, | |
11335 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11336 | if clause in the arg string. */ |
53a5351d | 11337 | |
c906108c | 11338 | static char * |
fba45db2 | 11339 | ep_parse_optional_if_clause (char **arg) |
c906108c | 11340 | { |
c5aa993b JM |
11341 | char *cond_string; |
11342 | ||
11343 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11344 | return NULL; |
c5aa993b | 11345 | |
4a64f543 | 11346 | /* Skip the "if" keyword. */ |
c906108c | 11347 | (*arg) += 2; |
c5aa993b | 11348 | |
c906108c | 11349 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11350 | condition string. */ |
e9cafbcc | 11351 | *arg = skip_spaces (*arg); |
c906108c | 11352 | cond_string = *arg; |
c5aa993b | 11353 | |
4a64f543 MS |
11354 | /* Assume that the condition occupies the remainder of the arg |
11355 | string. */ | |
c906108c | 11356 | (*arg) += strlen (cond_string); |
c5aa993b | 11357 | |
c906108c SS |
11358 | return cond_string; |
11359 | } | |
c5aa993b | 11360 | |
c906108c SS |
11361 | /* Commands to deal with catching events, such as signals, exceptions, |
11362 | process start/exit, etc. */ | |
c5aa993b JM |
11363 | |
11364 | typedef enum | |
11365 | { | |
44feb3ce TT |
11366 | catch_fork_temporary, catch_vfork_temporary, |
11367 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11368 | } |
11369 | catch_fork_kind; | |
11370 | ||
c906108c | 11371 | static void |
cc59ec59 MS |
11372 | catch_fork_command_1 (char *arg, int from_tty, |
11373 | struct cmd_list_element *command) | |
c906108c | 11374 | { |
a6d9a66e | 11375 | struct gdbarch *gdbarch = get_current_arch (); |
c5aa993b | 11376 | char *cond_string = NULL; |
44feb3ce TT |
11377 | catch_fork_kind fork_kind; |
11378 | int tempflag; | |
11379 | ||
11380 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
11381 | tempflag = (fork_kind == catch_fork_temporary | |
11382 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11383 | |
44feb3ce TT |
11384 | if (!arg) |
11385 | arg = ""; | |
e9cafbcc | 11386 | arg = skip_spaces (arg); |
c5aa993b | 11387 | |
c906108c | 11388 | /* The allowed syntax is: |
c5aa993b JM |
11389 | catch [v]fork |
11390 | catch [v]fork if <cond> | |
11391 | ||
4a64f543 | 11392 | First, check if there's an if clause. */ |
c906108c | 11393 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11394 | |
c906108c | 11395 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11396 | error (_("Junk at end of arguments.")); |
c5aa993b | 11397 | |
c906108c | 11398 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11399 | and enable reporting of such events. */ |
c5aa993b JM |
11400 | switch (fork_kind) |
11401 | { | |
44feb3ce TT |
11402 | case catch_fork_temporary: |
11403 | case catch_fork_permanent: | |
a6d9a66e | 11404 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11405 | &catch_fork_breakpoint_ops); |
c906108c | 11406 | break; |
44feb3ce TT |
11407 | case catch_vfork_temporary: |
11408 | case catch_vfork_permanent: | |
a6d9a66e | 11409 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11410 | &catch_vfork_breakpoint_ops); |
c906108c | 11411 | break; |
c5aa993b | 11412 | default: |
8a3fe4f8 | 11413 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11414 | break; |
c5aa993b | 11415 | } |
c906108c SS |
11416 | } |
11417 | ||
11418 | static void | |
cc59ec59 MS |
11419 | catch_exec_command_1 (char *arg, int from_tty, |
11420 | struct cmd_list_element *command) | |
c906108c | 11421 | { |
b4d90040 | 11422 | struct exec_catchpoint *c; |
a6d9a66e | 11423 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 11424 | int tempflag; |
c5aa993b | 11425 | char *cond_string = NULL; |
c906108c | 11426 | |
44feb3ce TT |
11427 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
11428 | ||
11429 | if (!arg) | |
11430 | arg = ""; | |
e9cafbcc | 11431 | arg = skip_spaces (arg); |
c906108c SS |
11432 | |
11433 | /* The allowed syntax is: | |
c5aa993b JM |
11434 | catch exec |
11435 | catch exec if <cond> | |
c906108c | 11436 | |
4a64f543 | 11437 | First, check if there's an if clause. */ |
c906108c SS |
11438 | cond_string = ep_parse_optional_if_clause (&arg); |
11439 | ||
11440 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11441 | error (_("Junk at end of arguments.")); |
c906108c | 11442 | |
b4d90040 PA |
11443 | c = XNEW (struct exec_catchpoint); |
11444 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, | |
11445 | &catch_exec_breakpoint_ops); | |
11446 | c->exec_pathname = NULL; | |
11447 | ||
3ea46bff | 11448 | install_breakpoint (0, &c->base, 1); |
c906108c | 11449 | } |
c5aa993b | 11450 | |
3086aeae | 11451 | static enum print_stop_action |
348d480f | 11452 | print_it_exception_catchpoint (bpstat bs) |
3086aeae | 11453 | { |
79a45e25 | 11454 | struct ui_out *uiout = current_uiout; |
348d480f | 11455 | struct breakpoint *b = bs->breakpoint_at; |
ade92717 | 11456 | int bp_temp, bp_throw; |
3086aeae | 11457 | |
ade92717 | 11458 | annotate_catchpoint (b->number); |
3086aeae | 11459 | |
ade92717 AR |
11460 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
11461 | if (b->loc->address != b->loc->requested_address) | |
11462 | breakpoint_adjustment_warning (b->loc->requested_address, | |
11463 | b->loc->address, | |
11464 | b->number, 1); | |
df2b6d2d | 11465 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
11466 | ui_out_text (uiout, |
11467 | bp_temp ? "Temporary catchpoint " | |
11468 | : "Catchpoint "); | |
11469 | if (!ui_out_is_mi_like_p (uiout)) | |
11470 | ui_out_field_int (uiout, "bkptno", b->number); | |
11471 | ui_out_text (uiout, | |
c0b37c48 AR |
11472 | bp_throw ? " (exception thrown), " |
11473 | : " (exception caught), "); | |
ade92717 AR |
11474 | if (ui_out_is_mi_like_p (uiout)) |
11475 | { | |
11476 | ui_out_field_string (uiout, "reason", | |
11477 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
11478 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
11479 | ui_out_field_int (uiout, "bkptno", b->number); | |
11480 | } | |
3086aeae DJ |
11481 | return PRINT_SRC_AND_LOC; |
11482 | } | |
11483 | ||
11484 | static void | |
cc59ec59 MS |
11485 | print_one_exception_catchpoint (struct breakpoint *b, |
11486 | struct bp_location **last_loc) | |
3086aeae | 11487 | { |
79a45b7d | 11488 | struct value_print_options opts; |
79a45e25 | 11489 | struct ui_out *uiout = current_uiout; |
cc59ec59 | 11490 | |
79a45b7d TT |
11491 | get_user_print_options (&opts); |
11492 | if (opts.addressprint) | |
3086aeae DJ |
11493 | { |
11494 | annotate_field (4); | |
604133b5 AR |
11495 | if (b->loc == NULL || b->loc->shlib_disabled) |
11496 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
11497 | else | |
5af949e3 UW |
11498 | ui_out_field_core_addr (uiout, "addr", |
11499 | b->loc->gdbarch, b->loc->address); | |
3086aeae DJ |
11500 | } |
11501 | annotate_field (5); | |
604133b5 | 11502 | if (b->loc) |
a6d9a66e | 11503 | *last_loc = b->loc; |
3086aeae DJ |
11504 | if (strstr (b->addr_string, "throw") != NULL) |
11505 | ui_out_field_string (uiout, "what", "exception throw"); | |
11506 | else | |
11507 | ui_out_field_string (uiout, "what", "exception catch"); | |
11508 | } | |
11509 | ||
11510 | static void | |
11511 | print_mention_exception_catchpoint (struct breakpoint *b) | |
11512 | { | |
79a45e25 | 11513 | struct ui_out *uiout = current_uiout; |
ade92717 AR |
11514 | int bp_temp; |
11515 | int bp_throw; | |
11516 | ||
df2b6d2d | 11517 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
11518 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
11519 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
11520 | : _("Catchpoint ")); | |
11521 | ui_out_field_int (uiout, "bkptno", b->number); | |
11522 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
11523 | : _(" (catch)")); | |
3086aeae DJ |
11524 | } |
11525 | ||
6149aea9 PA |
11526 | /* Implement the "print_recreate" breakpoint_ops method for throw and |
11527 | catch catchpoints. */ | |
11528 | ||
11529 | static void | |
4a64f543 MS |
11530 | print_recreate_exception_catchpoint (struct breakpoint *b, |
11531 | struct ui_file *fp) | |
6149aea9 PA |
11532 | { |
11533 | int bp_temp; | |
11534 | int bp_throw; | |
11535 | ||
11536 | bp_temp = b->disposition == disp_del; | |
11537 | bp_throw = strstr (b->addr_string, "throw") != NULL; | |
11538 | fprintf_unfiltered (fp, bp_temp ? "tcatch " : "catch "); | |
11539 | fprintf_unfiltered (fp, bp_throw ? "throw" : "catch"); | |
d9b3f62e | 11540 | print_recreate_thread (b, fp); |
6149aea9 PA |
11541 | } |
11542 | ||
2060206e | 11543 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops; |
3086aeae DJ |
11544 | |
11545 | static int | |
11546 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
11547 | enum exception_event_kind ex_event, int from_tty) | |
11548 | { | |
604133b5 AR |
11549 | char *trigger_func_name; |
11550 | ||
3086aeae | 11551 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 11552 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 11553 | else |
604133b5 | 11554 | trigger_func_name = "__cxa_throw"; |
3086aeae | 11555 | |
8cdf0e15 | 11556 | create_breakpoint (get_current_arch (), |
e7e0cddf | 11557 | trigger_func_name, cond_string, -1, NULL, |
8cdf0e15 | 11558 | 0 /* condition and thread are valid. */, |
0fb4aa4b | 11559 | tempflag, bp_breakpoint, |
8cdf0e15 VP |
11560 | 0, |
11561 | AUTO_BOOLEAN_TRUE /* pending */, | |
11562 | &gnu_v3_exception_catchpoint_ops, from_tty, | |
84f4c1fe | 11563 | 1 /* enabled */, |
44f238bb PA |
11564 | 0 /* internal */, |
11565 | 0); | |
3086aeae | 11566 | |
3086aeae DJ |
11567 | return 1; |
11568 | } | |
11569 | ||
4a64f543 | 11570 | /* Deal with "catch catch" and "catch throw" commands. */ |
c906108c SS |
11571 | |
11572 | static void | |
fba45db2 KB |
11573 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
11574 | int tempflag, int from_tty) | |
c906108c | 11575 | { |
c5aa993b | 11576 | char *cond_string = NULL; |
c5aa993b | 11577 | |
44feb3ce TT |
11578 | if (!arg) |
11579 | arg = ""; | |
e9cafbcc | 11580 | arg = skip_spaces (arg); |
c5aa993b | 11581 | |
c906108c SS |
11582 | cond_string = ep_parse_optional_if_clause (&arg); |
11583 | ||
11584 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11585 | error (_("Junk at end of arguments.")); |
c906108c | 11586 | |
059fb39f PM |
11587 | if (ex_event != EX_EVENT_THROW |
11588 | && ex_event != EX_EVENT_CATCH) | |
8a3fe4f8 | 11589 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 11590 | |
3086aeae DJ |
11591 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
11592 | return; | |
11593 | ||
8a3fe4f8 | 11594 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
11595 | } |
11596 | ||
44feb3ce TT |
11597 | /* Implementation of "catch catch" command. */ |
11598 | ||
11599 | static void | |
11600 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
11601 | { | |
11602 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 11603 | |
44feb3ce TT |
11604 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); |
11605 | } | |
11606 | ||
11607 | /* Implementation of "catch throw" command. */ | |
11608 | ||
11609 | static void | |
11610 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
11611 | { | |
11612 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 11613 | |
44feb3ce TT |
11614 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); |
11615 | } | |
11616 | ||
9ac4176b | 11617 | void |
28010a5d PA |
11618 | init_ada_exception_breakpoint (struct breakpoint *b, |
11619 | struct gdbarch *gdbarch, | |
11620 | struct symtab_and_line sal, | |
11621 | char *addr_string, | |
c0a91b2b | 11622 | const struct breakpoint_ops *ops, |
28010a5d PA |
11623 | int tempflag, |
11624 | int from_tty) | |
f7f9143b | 11625 | { |
f7f9143b JB |
11626 | if (from_tty) |
11627 | { | |
5af949e3 UW |
11628 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11629 | if (!loc_gdbarch) | |
11630 | loc_gdbarch = gdbarch; | |
11631 | ||
6c95b8df PA |
11632 | describe_other_breakpoints (loc_gdbarch, |
11633 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
11634 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
11635 | version for exception catchpoints, because two catchpoints | |
11636 | used for different exception names will use the same address. | |
11637 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 11638 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 11639 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
11640 | the user what type of catchpoint it is. The above is good |
11641 | enough for now, though. */ | |
11642 | } | |
11643 | ||
28010a5d | 11644 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b JB |
11645 | |
11646 | b->enable_state = bp_enabled; | |
11647 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
f7f9143b JB |
11648 | b->addr_string = addr_string; |
11649 | b->language = language_ada; | |
f7f9143b JB |
11650 | } |
11651 | ||
a96d9b2e SDJ |
11652 | /* Splits the argument using space as delimiter. Returns an xmalloc'd |
11653 | filter list, or NULL if no filtering is required. */ | |
11654 | static VEC(int) * | |
11655 | catch_syscall_split_args (char *arg) | |
11656 | { | |
11657 | VEC(int) *result = NULL; | |
29d0bb3d | 11658 | struct cleanup *cleanup = make_cleanup (VEC_cleanup (int), &result); |
a96d9b2e SDJ |
11659 | |
11660 | while (*arg != '\0') | |
11661 | { | |
11662 | int i, syscall_number; | |
11663 | char *endptr; | |
11664 | char cur_name[128]; | |
11665 | struct syscall s; | |
11666 | ||
11667 | /* Skip whitespace. */ | |
11668 | while (isspace (*arg)) | |
11669 | arg++; | |
11670 | ||
11671 | for (i = 0; i < 127 && arg[i] && !isspace (arg[i]); ++i) | |
11672 | cur_name[i] = arg[i]; | |
11673 | cur_name[i] = '\0'; | |
11674 | arg += i; | |
11675 | ||
11676 | /* Check if the user provided a syscall name or a number. */ | |
11677 | syscall_number = (int) strtol (cur_name, &endptr, 0); | |
11678 | if (*endptr == '\0') | |
bccd0dd2 | 11679 | get_syscall_by_number (syscall_number, &s); |
a96d9b2e SDJ |
11680 | else |
11681 | { | |
11682 | /* We have a name. Let's check if it's valid and convert it | |
11683 | to a number. */ | |
11684 | get_syscall_by_name (cur_name, &s); | |
11685 | ||
11686 | if (s.number == UNKNOWN_SYSCALL) | |
4a64f543 MS |
11687 | /* Here we have to issue an error instead of a warning, |
11688 | because GDB cannot do anything useful if there's no | |
11689 | syscall number to be caught. */ | |
a96d9b2e SDJ |
11690 | error (_("Unknown syscall name '%s'."), cur_name); |
11691 | } | |
11692 | ||
11693 | /* Ok, it's valid. */ | |
11694 | VEC_safe_push (int, result, s.number); | |
11695 | } | |
11696 | ||
11697 | discard_cleanups (cleanup); | |
11698 | return result; | |
11699 | } | |
11700 | ||
11701 | /* Implement the "catch syscall" command. */ | |
11702 | ||
11703 | static void | |
cc59ec59 MS |
11704 | catch_syscall_command_1 (char *arg, int from_tty, |
11705 | struct cmd_list_element *command) | |
a96d9b2e SDJ |
11706 | { |
11707 | int tempflag; | |
11708 | VEC(int) *filter; | |
11709 | struct syscall s; | |
11710 | struct gdbarch *gdbarch = get_current_arch (); | |
11711 | ||
11712 | /* Checking if the feature if supported. */ | |
11713 | if (gdbarch_get_syscall_number_p (gdbarch) == 0) | |
11714 | error (_("The feature 'catch syscall' is not supported on \ | |
ea666128 | 11715 | this architecture yet.")); |
a96d9b2e SDJ |
11716 | |
11717 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
11718 | ||
e9cafbcc | 11719 | arg = skip_spaces (arg); |
a96d9b2e SDJ |
11720 | |
11721 | /* We need to do this first "dummy" translation in order | |
11722 | to get the syscall XML file loaded or, most important, | |
11723 | to display a warning to the user if there's no XML file | |
11724 | for his/her architecture. */ | |
11725 | get_syscall_by_number (0, &s); | |
11726 | ||
11727 | /* The allowed syntax is: | |
11728 | catch syscall | |
11729 | catch syscall <name | number> [<name | number> ... <name | number>] | |
11730 | ||
11731 | Let's check if there's a syscall name. */ | |
11732 | ||
11733 | if (arg != NULL) | |
11734 | filter = catch_syscall_split_args (arg); | |
11735 | else | |
11736 | filter = NULL; | |
11737 | ||
11738 | create_syscall_event_catchpoint (tempflag, filter, | |
11739 | &catch_syscall_breakpoint_ops); | |
11740 | } | |
11741 | ||
c906108c | 11742 | static void |
fba45db2 | 11743 | catch_command (char *arg, int from_tty) |
c906108c | 11744 | { |
44feb3ce | 11745 | error (_("Catch requires an event name.")); |
c906108c SS |
11746 | } |
11747 | \f | |
11748 | ||
11749 | static void | |
fba45db2 | 11750 | tcatch_command (char *arg, int from_tty) |
c906108c | 11751 | { |
44feb3ce | 11752 | error (_("Catch requires an event name.")); |
c906108c SS |
11753 | } |
11754 | ||
8a2c437b TT |
11755 | /* A qsort comparison function that sorts breakpoints in order. */ |
11756 | ||
11757 | static int | |
11758 | compare_breakpoints (const void *a, const void *b) | |
11759 | { | |
11760 | const breakpoint_p *ba = a; | |
11761 | uintptr_t ua = (uintptr_t) *ba; | |
11762 | const breakpoint_p *bb = b; | |
11763 | uintptr_t ub = (uintptr_t) *bb; | |
11764 | ||
11765 | if ((*ba)->number < (*bb)->number) | |
11766 | return -1; | |
11767 | else if ((*ba)->number > (*bb)->number) | |
11768 | return 1; | |
11769 | ||
11770 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11771 | the number 0. */ | |
11772 | if (ua < ub) | |
11773 | return -1; | |
94b0e70d | 11774 | return ua > ub ? 1 : 0; |
8a2c437b TT |
11775 | } |
11776 | ||
80f8a6eb | 11777 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11778 | |
11779 | static void | |
fba45db2 | 11780 | clear_command (char *arg, int from_tty) |
c906108c | 11781 | { |
8a2c437b | 11782 | struct breakpoint *b, *prev; |
d6e956e5 VP |
11783 | VEC(breakpoint_p) *found = 0; |
11784 | int ix; | |
c906108c SS |
11785 | int default_match; |
11786 | struct symtabs_and_lines sals; | |
11787 | struct symtab_and_line sal; | |
c906108c | 11788 | int i; |
8a2c437b | 11789 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); |
c906108c SS |
11790 | |
11791 | if (arg) | |
11792 | { | |
39cf75f7 DE |
11793 | sals = decode_line_with_current_source (arg, |
11794 | (DECODE_LINE_FUNFIRSTLINE | |
11795 | | DECODE_LINE_LIST_MODE)); | |
cf4ded82 | 11796 | make_cleanup (xfree, sals.sals); |
c906108c SS |
11797 | default_match = 0; |
11798 | } | |
11799 | else | |
11800 | { | |
c5aa993b | 11801 | sals.sals = (struct symtab_and_line *) |
c906108c | 11802 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 11803 | make_cleanup (xfree, sals.sals); |
4a64f543 | 11804 | init_sal (&sal); /* Initialize to zeroes. */ |
1bfeeb0f JL |
11805 | |
11806 | /* Set sal's line, symtab, pc, and pspace to the values | |
11807 | corresponding to the last call to print_frame_info. If the | |
11808 | codepoint is not valid, this will set all the fields to 0. */ | |
11809 | get_last_displayed_sal (&sal); | |
c906108c | 11810 | if (sal.symtab == 0) |
8a3fe4f8 | 11811 | error (_("No source file specified.")); |
c906108c SS |
11812 | |
11813 | sals.sals[0] = sal; | |
11814 | sals.nelts = 1; | |
11815 | ||
11816 | default_match = 1; | |
11817 | } | |
11818 | ||
4a64f543 MS |
11819 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11820 | seems, because all existing breakpoints typically have both | |
11821 | file/line and pc set. So, if clear is given file/line, we can | |
11822 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11823 | |
11824 | We only support clearing given the address explicitly | |
11825 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11826 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11827 | due to optimization, all in one block. |
4a64f543 MS |
11828 | |
11829 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11830 | PC corresponding to the same file:line, the breakpoint won't |
11831 | be cleared. We probably can still clear the breakpoint, but | |
11832 | since the other PC value is never presented to user, user | |
11833 | can only find it by guessing, and it does not seem important | |
11834 | to support that. */ | |
11835 | ||
4a64f543 MS |
11836 | /* For each line spec given, delete bps which correspond to it. Do |
11837 | it in two passes, solely to preserve the current behavior that | |
11838 | from_tty is forced true if we delete more than one | |
11839 | breakpoint. */ | |
c906108c | 11840 | |
80f8a6eb | 11841 | found = NULL; |
8a2c437b | 11842 | make_cleanup (VEC_cleanup (breakpoint_p), &found); |
c906108c SS |
11843 | for (i = 0; i < sals.nelts; i++) |
11844 | { | |
4aac40c8 TT |
11845 | int is_abs, sal_name_len; |
11846 | ||
c906108c | 11847 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
11848 | If line given (pc == 0), clear all bpts on specified line. |
11849 | If defaulting, clear all bpts on default line | |
c906108c | 11850 | or at default pc. |
c5aa993b JM |
11851 | |
11852 | defaulting sal.pc != 0 tests to do | |
11853 | ||
11854 | 0 1 pc | |
11855 | 1 1 pc _and_ line | |
11856 | 0 0 line | |
11857 | 1 0 <can't happen> */ | |
c906108c SS |
11858 | |
11859 | sal = sals.sals[i]; | |
4aac40c8 TT |
11860 | is_abs = sal.symtab == NULL ? 1 : IS_ABSOLUTE_PATH (sal.symtab->filename); |
11861 | sal_name_len = is_abs ? 0 : strlen (sal.symtab->filename); | |
c906108c | 11862 | |
4a64f543 | 11863 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 11864 | ALL_BREAKPOINTS (b) |
c5aa993b | 11865 | { |
0d381245 | 11866 | int match = 0; |
4a64f543 | 11867 | /* Are we going to delete b? */ |
cc60f2e3 | 11868 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
11869 | { |
11870 | struct bp_location *loc = b->loc; | |
11871 | for (; loc; loc = loc->next) | |
11872 | { | |
f8eba3c6 TT |
11873 | /* If the user specified file:line, don't allow a PC |
11874 | match. This matches historical gdb behavior. */ | |
11875 | int pc_match = (!sal.explicit_line | |
11876 | && sal.pc | |
11877 | && (loc->pspace == sal.pspace) | |
11878 | && (loc->address == sal.pc) | |
11879 | && (!section_is_overlay (loc->section) | |
11880 | || loc->section == sal.section)); | |
4aac40c8 TT |
11881 | int line_match = 0; |
11882 | ||
11883 | if ((default_match || sal.explicit_line) | |
11884 | && loc->source_file != NULL | |
11885 | && sal.symtab != NULL | |
11886 | && sal.pspace == loc->pspace | |
11887 | && loc->line_number == sal.line) | |
11888 | { | |
11889 | if (filename_cmp (loc->source_file, | |
11890 | sal.symtab->filename) == 0) | |
11891 | line_match = 1; | |
11892 | else if (!IS_ABSOLUTE_PATH (sal.symtab->filename) | |
11893 | && compare_filenames_for_search (loc->source_file, | |
11894 | sal.symtab->filename, | |
11895 | sal_name_len)) | |
11896 | line_match = 1; | |
11897 | } | |
11898 | ||
0d381245 VP |
11899 | if (pc_match || line_match) |
11900 | { | |
11901 | match = 1; | |
11902 | break; | |
11903 | } | |
11904 | } | |
11905 | } | |
11906 | ||
11907 | if (match) | |
d6e956e5 | 11908 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 11909 | } |
80f8a6eb | 11910 | } |
8a2c437b | 11911 | |
80f8a6eb | 11912 | /* Now go thru the 'found' chain and delete them. */ |
d6e956e5 | 11913 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
11914 | { |
11915 | if (arg) | |
8a3fe4f8 | 11916 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11917 | else |
8a3fe4f8 | 11918 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11919 | } |
c906108c | 11920 | |
8a2c437b TT |
11921 | /* Remove duplicates from the vec. */ |
11922 | qsort (VEC_address (breakpoint_p, found), | |
11923 | VEC_length (breakpoint_p, found), | |
11924 | sizeof (breakpoint_p), | |
11925 | compare_breakpoints); | |
11926 | prev = VEC_index (breakpoint_p, found, 0); | |
11927 | for (ix = 1; VEC_iterate (breakpoint_p, found, ix, b); ++ix) | |
11928 | { | |
11929 | if (b == prev) | |
11930 | { | |
11931 | VEC_ordered_remove (breakpoint_p, found, ix); | |
11932 | --ix; | |
11933 | } | |
11934 | } | |
11935 | ||
d6e956e5 | 11936 | if (VEC_length(breakpoint_p, found) > 1) |
4a64f543 | 11937 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11938 | if (from_tty) |
a3f17187 | 11939 | { |
d6e956e5 | 11940 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
11941 | printf_unfiltered (_("Deleted breakpoint ")); |
11942 | else | |
11943 | printf_unfiltered (_("Deleted breakpoints ")); | |
11944 | } | |
ef37bb07 | 11945 | annotate_breakpoints_changed (); |
d6e956e5 VP |
11946 | |
11947 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 11948 | { |
c5aa993b | 11949 | if (from_tty) |
d6e956e5 VP |
11950 | printf_unfiltered ("%d ", b->number); |
11951 | delete_breakpoint (b); | |
c906108c | 11952 | } |
80f8a6eb MS |
11953 | if (from_tty) |
11954 | putchar_unfiltered ('\n'); | |
8a2c437b TT |
11955 | |
11956 | do_cleanups (cleanups); | |
c906108c SS |
11957 | } |
11958 | \f | |
11959 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
11960 | all breakpoints that are marked for deletion, whether hit or not. | |
11961 | This is called after any breakpoint is hit, or after errors. */ | |
11962 | ||
11963 | void | |
fba45db2 | 11964 | breakpoint_auto_delete (bpstat bs) |
c906108c | 11965 | { |
35df4500 | 11966 | struct breakpoint *b, *b_tmp; |
c906108c SS |
11967 | |
11968 | for (; bs; bs = bs->next) | |
f431efe5 PA |
11969 | if (bs->breakpoint_at |
11970 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 11971 | && bs->stop) |
f431efe5 | 11972 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 11973 | |
35df4500 | 11974 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 11975 | { |
b5de0fa7 | 11976 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
11977 | delete_breakpoint (b); |
11978 | } | |
c906108c SS |
11979 | } |
11980 | ||
4a64f543 MS |
11981 | /* A comparison function for bp_location AP and BP being interfaced to |
11982 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
11983 | does breakpoint_address_is_meaningful say for its OWNER), | |
11984 | secondarily by ordering first bp_permanent OWNERed elements and | |
11985 | terciarily just ensuring the array is sorted stable way despite | |
e5dd4106 | 11986 | qsort being an unstable algorithm. */ |
876fa593 JK |
11987 | |
11988 | static int | |
494cfb0f | 11989 | bp_location_compare (const void *ap, const void *bp) |
876fa593 | 11990 | { |
494cfb0f JK |
11991 | struct bp_location *a = *(void **) ap; |
11992 | struct bp_location *b = *(void **) bp; | |
2bdf28a0 | 11993 | /* A and B come from existing breakpoints having non-NULL OWNER. */ |
876fa593 JK |
11994 | int a_perm = a->owner->enable_state == bp_permanent; |
11995 | int b_perm = b->owner->enable_state == bp_permanent; | |
11996 | ||
11997 | if (a->address != b->address) | |
11998 | return (a->address > b->address) - (a->address < b->address); | |
11999 | ||
dea2aa5f LM |
12000 | /* Sort locations at the same address by their pspace number, keeping |
12001 | locations of the same inferior (in a multi-inferior environment) | |
12002 | grouped. */ | |
12003 | ||
12004 | if (a->pspace->num != b->pspace->num) | |
12005 | return ((a->pspace->num > b->pspace->num) | |
12006 | - (a->pspace->num < b->pspace->num)); | |
12007 | ||
876fa593 JK |
12008 | /* Sort permanent breakpoints first. */ |
12009 | if (a_perm != b_perm) | |
12010 | return (a_perm < b_perm) - (a_perm > b_perm); | |
12011 | ||
c56a97f9 JK |
12012 | /* Make the internal GDB representation stable across GDB runs |
12013 | where A and B memory inside GDB can differ. Breakpoint locations of | |
12014 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
12015 | |
12016 | if (a->owner->number != b->owner->number) | |
c56a97f9 JK |
12017 | return ((a->owner->number > b->owner->number) |
12018 | - (a->owner->number < b->owner->number)); | |
876fa593 JK |
12019 | |
12020 | return (a > b) - (a < b); | |
12021 | } | |
12022 | ||
876fa593 | 12023 | /* Set bp_location_placed_address_before_address_max and |
4a64f543 MS |
12024 | bp_location_shadow_len_after_address_max according to the current |
12025 | content of the bp_location array. */ | |
f7545552 TT |
12026 | |
12027 | static void | |
876fa593 | 12028 | bp_location_target_extensions_update (void) |
f7545552 | 12029 | { |
876fa593 JK |
12030 | struct bp_location *bl, **blp_tmp; |
12031 | ||
12032 | bp_location_placed_address_before_address_max = 0; | |
12033 | bp_location_shadow_len_after_address_max = 0; | |
12034 | ||
12035 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
12036 | { | |
12037 | CORE_ADDR start, end, addr; | |
12038 | ||
12039 | if (!bp_location_has_shadow (bl)) | |
12040 | continue; | |
12041 | ||
12042 | start = bl->target_info.placed_address; | |
12043 | end = start + bl->target_info.shadow_len; | |
12044 | ||
12045 | gdb_assert (bl->address >= start); | |
12046 | addr = bl->address - start; | |
12047 | if (addr > bp_location_placed_address_before_address_max) | |
12048 | bp_location_placed_address_before_address_max = addr; | |
12049 | ||
12050 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
12051 | ||
12052 | gdb_assert (bl->address < end); | |
12053 | addr = end - bl->address; | |
12054 | if (addr > bp_location_shadow_len_after_address_max) | |
12055 | bp_location_shadow_len_after_address_max = addr; | |
12056 | } | |
f7545552 TT |
12057 | } |
12058 | ||
1e4d1764 YQ |
12059 | /* Download tracepoint locations if they haven't been. */ |
12060 | ||
12061 | static void | |
12062 | download_tracepoint_locations (void) | |
12063 | { | |
12064 | struct bp_location *bl, **blp_tmp; | |
12065 | struct cleanup *old_chain; | |
12066 | ||
12067 | if (!target_can_download_tracepoint ()) | |
12068 | return; | |
12069 | ||
12070 | old_chain = save_current_space_and_thread (); | |
12071 | ||
12072 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
12073 | { | |
12074 | struct tracepoint *t; | |
12075 | ||
12076 | if (!is_tracepoint (bl->owner)) | |
12077 | continue; | |
12078 | ||
12079 | if ((bl->owner->type == bp_fast_tracepoint | |
12080 | ? !may_insert_fast_tracepoints | |
12081 | : !may_insert_tracepoints)) | |
12082 | continue; | |
12083 | ||
12084 | /* In tracepoint, locations are _never_ duplicated, so | |
12085 | should_be_inserted is equivalent to | |
12086 | unduplicated_should_be_inserted. */ | |
12087 | if (!should_be_inserted (bl) || bl->inserted) | |
12088 | continue; | |
12089 | ||
12090 | switch_to_program_space_and_thread (bl->pspace); | |
12091 | ||
12092 | target_download_tracepoint (bl); | |
12093 | ||
12094 | bl->inserted = 1; | |
12095 | t = (struct tracepoint *) bl->owner; | |
12096 | t->number_on_target = bl->owner->number; | |
12097 | } | |
12098 | ||
12099 | do_cleanups (old_chain); | |
12100 | } | |
12101 | ||
934709f0 PW |
12102 | /* Swap the insertion/duplication state between two locations. */ |
12103 | ||
12104 | static void | |
12105 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
12106 | { | |
12107 | const int left_inserted = left->inserted; | |
12108 | const int left_duplicate = left->duplicate; | |
b775012e | 12109 | const int left_needs_update = left->needs_update; |
934709f0 PW |
12110 | const struct bp_target_info left_target_info = left->target_info; |
12111 | ||
1e4d1764 YQ |
12112 | /* Locations of tracepoints can never be duplicated. */ |
12113 | if (is_tracepoint (left->owner)) | |
12114 | gdb_assert (!left->duplicate); | |
12115 | if (is_tracepoint (right->owner)) | |
12116 | gdb_assert (!right->duplicate); | |
12117 | ||
934709f0 PW |
12118 | left->inserted = right->inserted; |
12119 | left->duplicate = right->duplicate; | |
b775012e | 12120 | left->needs_update = right->needs_update; |
934709f0 PW |
12121 | left->target_info = right->target_info; |
12122 | right->inserted = left_inserted; | |
12123 | right->duplicate = left_duplicate; | |
b775012e | 12124 | right->needs_update = left_needs_update; |
934709f0 PW |
12125 | right->target_info = left_target_info; |
12126 | } | |
12127 | ||
b775012e LM |
12128 | /* Force the re-insertion of the locations at ADDRESS. This is called |
12129 | once a new/deleted/modified duplicate location is found and we are evaluating | |
12130 | conditions on the target's side. Such conditions need to be updated on | |
12131 | the target. */ | |
12132 | ||
12133 | static void | |
12134 | force_breakpoint_reinsertion (struct bp_location *bl) | |
12135 | { | |
12136 | struct bp_location **locp = NULL, **loc2p; | |
12137 | struct bp_location *loc; | |
12138 | CORE_ADDR address = 0; | |
12139 | int pspace_num; | |
12140 | ||
12141 | address = bl->address; | |
12142 | pspace_num = bl->pspace->num; | |
12143 | ||
12144 | /* This is only meaningful if the target is | |
12145 | evaluating conditions and if the user has | |
12146 | opted for condition evaluation on the target's | |
12147 | side. */ | |
12148 | if (gdb_evaluates_breakpoint_condition_p () | |
12149 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
12150 | return; | |
12151 | ||
12152 | /* Flag all breakpoint locations with this address and | |
12153 | the same program space as the location | |
12154 | as "its condition has changed". We need to | |
12155 | update the conditions on the target's side. */ | |
12156 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
12157 | { | |
12158 | loc = *loc2p; | |
12159 | ||
12160 | if (!is_breakpoint (loc->owner) | |
12161 | || pspace_num != loc->pspace->num) | |
12162 | continue; | |
12163 | ||
12164 | /* Flag the location appropriately. We use a different state to | |
12165 | let everyone know that we already updated the set of locations | |
12166 | with addr bl->address and program space bl->pspace. This is so | |
12167 | we don't have to keep calling these functions just to mark locations | |
12168 | that have already been marked. */ | |
12169 | loc->condition_changed = condition_updated; | |
12170 | ||
12171 | /* Free the agent expression bytecode as well. We will compute | |
12172 | it later on. */ | |
12173 | if (loc->cond_bytecode) | |
12174 | { | |
12175 | free_agent_expr (loc->cond_bytecode); | |
12176 | loc->cond_bytecode = NULL; | |
12177 | } | |
12178 | } | |
12179 | } | |
12180 | ||
4cd9bd08 | 12181 | /* If SHOULD_INSERT is false, do not insert any breakpoint locations |
b60e7edf PA |
12182 | into the inferior, only remove already-inserted locations that no |
12183 | longer should be inserted. Functions that delete a breakpoint or | |
12184 | breakpoints should pass false, so that deleting a breakpoint | |
12185 | doesn't have the side effect of inserting the locations of other | |
12186 | breakpoints that are marked not-inserted, but should_be_inserted | |
12187 | returns true on them. | |
12188 | ||
12189 | This behaviour is useful is situations close to tear-down -- e.g., | |
12190 | after an exec, while the target still has execution, but breakpoint | |
12191 | shadows of the previous executable image should *NOT* be restored | |
12192 | to the new image; or before detaching, where the target still has | |
12193 | execution and wants to delete breakpoints from GDB's lists, and all | |
12194 | breakpoints had already been removed from the inferior. */ | |
12195 | ||
0d381245 | 12196 | static void |
b60e7edf | 12197 | update_global_location_list (int should_insert) |
0d381245 | 12198 | { |
74960c60 | 12199 | struct breakpoint *b; |
876fa593 | 12200 | struct bp_location **locp, *loc; |
f7545552 | 12201 | struct cleanup *cleanups; |
b775012e LM |
12202 | /* Last breakpoint location address that was marked for update. */ |
12203 | CORE_ADDR last_addr = 0; | |
12204 | /* Last breakpoint location program space that was marked for update. */ | |
12205 | int last_pspace_num = -1; | |
f7545552 | 12206 | |
2d134ed3 PA |
12207 | /* Used in the duplicates detection below. When iterating over all |
12208 | bp_locations, points to the first bp_location of a given address. | |
12209 | Breakpoints and watchpoints of different types are never | |
12210 | duplicates of each other. Keep one pointer for each type of | |
12211 | breakpoint/watchpoint, so we only need to loop over all locations | |
12212 | once. */ | |
12213 | struct bp_location *bp_loc_first; /* breakpoint */ | |
12214 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
12215 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
12216 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 12217 | |
4a64f543 MS |
12218 | /* Saved former bp_location array which we compare against the newly |
12219 | built bp_location from the current state of ALL_BREAKPOINTS. */ | |
876fa593 JK |
12220 | struct bp_location **old_location, **old_locp; |
12221 | unsigned old_location_count; | |
12222 | ||
12223 | old_location = bp_location; | |
12224 | old_location_count = bp_location_count; | |
12225 | bp_location = NULL; | |
12226 | bp_location_count = 0; | |
12227 | cleanups = make_cleanup (xfree, old_location); | |
0d381245 | 12228 | |
74960c60 | 12229 | ALL_BREAKPOINTS (b) |
876fa593 JK |
12230 | for (loc = b->loc; loc; loc = loc->next) |
12231 | bp_location_count++; | |
12232 | ||
12233 | bp_location = xmalloc (sizeof (*bp_location) * bp_location_count); | |
12234 | locp = bp_location; | |
12235 | ALL_BREAKPOINTS (b) | |
12236 | for (loc = b->loc; loc; loc = loc->next) | |
12237 | *locp++ = loc; | |
12238 | qsort (bp_location, bp_location_count, sizeof (*bp_location), | |
494cfb0f | 12239 | bp_location_compare); |
876fa593 JK |
12240 | |
12241 | bp_location_target_extensions_update (); | |
74960c60 | 12242 | |
4a64f543 MS |
12243 | /* Identify bp_location instances that are no longer present in the |
12244 | new list, and therefore should be freed. Note that it's not | |
12245 | necessary that those locations should be removed from inferior -- | |
12246 | if there's another location at the same address (previously | |
12247 | marked as duplicate), we don't need to remove/insert the | |
12248 | location. | |
876fa593 | 12249 | |
4a64f543 MS |
12250 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
12251 | and former bp_location array state respectively. */ | |
876fa593 JK |
12252 | |
12253 | locp = bp_location; | |
12254 | for (old_locp = old_location; old_locp < old_location + old_location_count; | |
12255 | old_locp++) | |
74960c60 | 12256 | { |
876fa593 | 12257 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 12258 | struct bp_location **loc2p; |
876fa593 | 12259 | |
e5dd4106 | 12260 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 12261 | not, we have to free it. */ |
c7d46a38 | 12262 | int found_object = 0; |
20874c92 VP |
12263 | /* Tells if the location should remain inserted in the target. */ |
12264 | int keep_in_target = 0; | |
12265 | int removed = 0; | |
876fa593 | 12266 | |
4a64f543 MS |
12267 | /* Skip LOCP entries which will definitely never be needed. |
12268 | Stop either at or being the one matching OLD_LOC. */ | |
876fa593 | 12269 | while (locp < bp_location + bp_location_count |
c7d46a38 | 12270 | && (*locp)->address < old_loc->address) |
876fa593 | 12271 | locp++; |
c7d46a38 PA |
12272 | |
12273 | for (loc2p = locp; | |
12274 | (loc2p < bp_location + bp_location_count | |
12275 | && (*loc2p)->address == old_loc->address); | |
12276 | loc2p++) | |
12277 | { | |
b775012e LM |
12278 | /* Check if this is a new/duplicated location or a duplicated |
12279 | location that had its condition modified. If so, we want to send | |
12280 | its condition to the target if evaluation of conditions is taking | |
12281 | place there. */ | |
12282 | if ((*loc2p)->condition_changed == condition_modified | |
12283 | && (last_addr != old_loc->address | |
12284 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 12285 | { |
b775012e LM |
12286 | force_breakpoint_reinsertion (*loc2p); |
12287 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 12288 | } |
b775012e LM |
12289 | |
12290 | if (*loc2p == old_loc) | |
12291 | found_object = 1; | |
c7d46a38 | 12292 | } |
74960c60 | 12293 | |
b775012e LM |
12294 | /* We have already handled this address, update it so that we don't |
12295 | have to go through updates again. */ | |
12296 | last_addr = old_loc->address; | |
12297 | ||
12298 | /* Target-side condition evaluation: Handle deleted locations. */ | |
12299 | if (!found_object) | |
12300 | force_breakpoint_reinsertion (old_loc); | |
12301 | ||
4a64f543 MS |
12302 | /* If this location is no longer present, and inserted, look if |
12303 | there's maybe a new location at the same address. If so, | |
12304 | mark that one inserted, and don't remove this one. This is | |
12305 | needed so that we don't have a time window where a breakpoint | |
12306 | at certain location is not inserted. */ | |
74960c60 | 12307 | |
876fa593 | 12308 | if (old_loc->inserted) |
0d381245 | 12309 | { |
4a64f543 MS |
12310 | /* If the location is inserted now, we might have to remove |
12311 | it. */ | |
74960c60 | 12312 | |
876fa593 | 12313 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 12314 | { |
4a64f543 MS |
12315 | /* The location is still present in the location list, |
12316 | and still should be inserted. Don't do anything. */ | |
20874c92 | 12317 | keep_in_target = 1; |
74960c60 VP |
12318 | } |
12319 | else | |
12320 | { | |
b775012e LM |
12321 | /* This location still exists, but it won't be kept in the |
12322 | target since it may have been disabled. We proceed to | |
12323 | remove its target-side condition. */ | |
12324 | ||
4a64f543 MS |
12325 | /* The location is either no longer present, or got |
12326 | disabled. See if there's another location at the | |
12327 | same address, in which case we don't need to remove | |
12328 | this one from the target. */ | |
876fa593 | 12329 | |
2bdf28a0 | 12330 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
12331 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
12332 | { | |
876fa593 | 12333 | for (loc2p = locp; |
c7d46a38 PA |
12334 | (loc2p < bp_location + bp_location_count |
12335 | && (*loc2p)->address == old_loc->address); | |
876fa593 JK |
12336 | loc2p++) |
12337 | { | |
12338 | struct bp_location *loc2 = *loc2p; | |
12339 | ||
2d134ed3 | 12340 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 12341 | { |
85d721b8 PA |
12342 | /* Read watchpoint locations are switched to |
12343 | access watchpoints, if the former are not | |
12344 | supported, but the latter are. */ | |
12345 | if (is_hardware_watchpoint (old_loc->owner)) | |
12346 | { | |
12347 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
12348 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
12349 | } | |
12350 | ||
934709f0 PW |
12351 | /* loc2 is a duplicated location. We need to check |
12352 | if it should be inserted in case it will be | |
12353 | unduplicated. */ | |
12354 | if (loc2 != old_loc | |
12355 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 12356 | { |
934709f0 | 12357 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
12358 | keep_in_target = 1; |
12359 | break; | |
12360 | } | |
876fa593 JK |
12361 | } |
12362 | } | |
12363 | } | |
74960c60 VP |
12364 | } |
12365 | ||
20874c92 VP |
12366 | if (!keep_in_target) |
12367 | { | |
876fa593 | 12368 | if (remove_breakpoint (old_loc, mark_uninserted)) |
20874c92 | 12369 | { |
4a64f543 MS |
12370 | /* This is just about all we can do. We could keep |
12371 | this location on the global list, and try to | |
12372 | remove it next time, but there's no particular | |
12373 | reason why we will succeed next time. | |
20874c92 | 12374 | |
4a64f543 MS |
12375 | Note that at this point, old_loc->owner is still |
12376 | valid, as delete_breakpoint frees the breakpoint | |
12377 | only after calling us. */ | |
3e43a32a MS |
12378 | printf_filtered (_("warning: Error removing " |
12379 | "breakpoint %d\n"), | |
876fa593 | 12380 | old_loc->owner->number); |
20874c92 VP |
12381 | } |
12382 | removed = 1; | |
12383 | } | |
0d381245 | 12384 | } |
74960c60 VP |
12385 | |
12386 | if (!found_object) | |
1c5cfe86 | 12387 | { |
db82e815 PA |
12388 | if (removed && non_stop |
12389 | && breakpoint_address_is_meaningful (old_loc->owner) | |
12390 | && !is_hardware_watchpoint (old_loc->owner)) | |
20874c92 | 12391 | { |
db82e815 PA |
12392 | /* This location was removed from the target. In |
12393 | non-stop mode, a race condition is possible where | |
12394 | we've removed a breakpoint, but stop events for that | |
12395 | breakpoint are already queued and will arrive later. | |
12396 | We apply an heuristic to be able to distinguish such | |
12397 | SIGTRAPs from other random SIGTRAPs: we keep this | |
12398 | breakpoint location for a bit, and will retire it | |
12399 | after we see some number of events. The theory here | |
12400 | is that reporting of events should, "on the average", | |
12401 | be fair, so after a while we'll see events from all | |
12402 | threads that have anything of interest, and no longer | |
12403 | need to keep this breakpoint location around. We | |
12404 | don't hold locations forever so to reduce chances of | |
12405 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
12406 | SIGTRAP. | |
12407 | ||
12408 | The heuristic failing can be disastrous on | |
12409 | decr_pc_after_break targets. | |
12410 | ||
12411 | On decr_pc_after_break targets, like e.g., x86-linux, | |
12412 | if we fail to recognize a late breakpoint SIGTRAP, | |
12413 | because events_till_retirement has reached 0 too | |
12414 | soon, we'll fail to do the PC adjustment, and report | |
12415 | a random SIGTRAP to the user. When the user resumes | |
12416 | the inferior, it will most likely immediately crash | |
2dec564e | 12417 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
12418 | corrupted, because of being resumed e.g., in the |
12419 | middle of a multi-byte instruction, or skipped a | |
12420 | one-byte instruction. This was actually seen happen | |
12421 | on native x86-linux, and should be less rare on | |
12422 | targets that do not support new thread events, like | |
12423 | remote, due to the heuristic depending on | |
12424 | thread_count. | |
12425 | ||
12426 | Mistaking a random SIGTRAP for a breakpoint trap | |
12427 | causes similar symptoms (PC adjustment applied when | |
12428 | it shouldn't), but then again, playing with SIGTRAPs | |
12429 | behind the debugger's back is asking for trouble. | |
12430 | ||
12431 | Since hardware watchpoint traps are always | |
12432 | distinguishable from other traps, so we don't need to | |
12433 | apply keep hardware watchpoint moribund locations | |
12434 | around. We simply always ignore hardware watchpoint | |
12435 | traps we can no longer explain. */ | |
12436 | ||
876fa593 JK |
12437 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
12438 | old_loc->owner = NULL; | |
20874c92 | 12439 | |
876fa593 | 12440 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
12441 | } |
12442 | else | |
f431efe5 PA |
12443 | { |
12444 | old_loc->owner = NULL; | |
12445 | decref_bp_location (&old_loc); | |
12446 | } | |
20874c92 | 12447 | } |
74960c60 | 12448 | } |
1c5cfe86 | 12449 | |
348d480f PA |
12450 | /* Rescan breakpoints at the same address and section, marking the |
12451 | first one as "first" and any others as "duplicates". This is so | |
12452 | that the bpt instruction is only inserted once. If we have a | |
12453 | permanent breakpoint at the same place as BPT, make that one the | |
12454 | official one, and the rest as duplicates. Permanent breakpoints | |
12455 | are sorted first for the same address. | |
12456 | ||
12457 | Do the same for hardware watchpoints, but also considering the | |
12458 | watchpoint's type (regular/access/read) and length. */ | |
12459 | ||
12460 | bp_loc_first = NULL; | |
12461 | wp_loc_first = NULL; | |
12462 | awp_loc_first = NULL; | |
12463 | rwp_loc_first = NULL; | |
12464 | ALL_BP_LOCATIONS (loc, locp) | |
12465 | { | |
12466 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
12467 | non-NULL. */ | |
348d480f | 12468 | struct bp_location **loc_first_p; |
d3fbdd86 | 12469 | b = loc->owner; |
348d480f | 12470 | |
6f380991 | 12471 | if (!unduplicated_should_be_inserted (loc) |
348d480f | 12472 | || !breakpoint_address_is_meaningful (b) |
1e4d1764 YQ |
12473 | /* Don't detect duplicate for tracepoint locations because they are |
12474 | never duplicated. See the comments in field `duplicate' of | |
12475 | `struct bp_location'. */ | |
348d480f | 12476 | || is_tracepoint (b)) |
b775012e LM |
12477 | { |
12478 | /* Clear the condition modification flag. */ | |
12479 | loc->condition_changed = condition_unchanged; | |
12480 | continue; | |
12481 | } | |
348d480f PA |
12482 | |
12483 | /* Permanent breakpoint should always be inserted. */ | |
12484 | if (b->enable_state == bp_permanent && ! loc->inserted) | |
12485 | internal_error (__FILE__, __LINE__, | |
12486 | _("allegedly permanent breakpoint is not " | |
12487 | "actually inserted")); | |
12488 | ||
12489 | if (b->type == bp_hardware_watchpoint) | |
12490 | loc_first_p = &wp_loc_first; | |
12491 | else if (b->type == bp_read_watchpoint) | |
12492 | loc_first_p = &rwp_loc_first; | |
12493 | else if (b->type == bp_access_watchpoint) | |
12494 | loc_first_p = &awp_loc_first; | |
12495 | else | |
12496 | loc_first_p = &bp_loc_first; | |
12497 | ||
12498 | if (*loc_first_p == NULL | |
12499 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
12500 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
12501 | { | |
12502 | *loc_first_p = loc; | |
12503 | loc->duplicate = 0; | |
b775012e LM |
12504 | |
12505 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
12506 | { | |
12507 | loc->needs_update = 1; | |
12508 | /* Clear the condition modification flag. */ | |
12509 | loc->condition_changed = condition_unchanged; | |
12510 | } | |
348d480f PA |
12511 | continue; |
12512 | } | |
12513 | ||
934709f0 PW |
12514 | |
12515 | /* This and the above ensure the invariant that the first location | |
12516 | is not duplicated, and is the inserted one. | |
12517 | All following are marked as duplicated, and are not inserted. */ | |
12518 | if (loc->inserted) | |
12519 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
12520 | loc->duplicate = 1; |
12521 | ||
b775012e LM |
12522 | /* Clear the condition modification flag. */ |
12523 | loc->condition_changed = condition_unchanged; | |
12524 | ||
348d480f PA |
12525 | if ((*loc_first_p)->owner->enable_state == bp_permanent && loc->inserted |
12526 | && b->enable_state != bp_permanent) | |
12527 | internal_error (__FILE__, __LINE__, | |
12528 | _("another breakpoint was inserted on top of " | |
12529 | "a permanent breakpoint")); | |
12530 | } | |
12531 | ||
b775012e | 12532 | if (breakpoints_always_inserted_mode () |
348d480f | 12533 | && (have_live_inferiors () |
f5656ead | 12534 | || (gdbarch_has_global_breakpoints (target_gdbarch ())))) |
b775012e LM |
12535 | { |
12536 | if (should_insert) | |
12537 | insert_breakpoint_locations (); | |
12538 | else | |
12539 | { | |
12540 | /* Though should_insert is false, we may need to update conditions | |
12541 | on the target's side if it is evaluating such conditions. We | |
12542 | only update conditions for locations that are marked | |
12543 | "needs_update". */ | |
12544 | update_inserted_breakpoint_locations (); | |
12545 | } | |
12546 | } | |
348d480f | 12547 | |
1e4d1764 YQ |
12548 | if (should_insert) |
12549 | download_tracepoint_locations (); | |
12550 | ||
348d480f PA |
12551 | do_cleanups (cleanups); |
12552 | } | |
12553 | ||
12554 | void | |
12555 | breakpoint_retire_moribund (void) | |
12556 | { | |
12557 | struct bp_location *loc; | |
12558 | int ix; | |
12559 | ||
12560 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
12561 | if (--(loc->events_till_retirement) == 0) | |
12562 | { | |
12563 | decref_bp_location (&loc); | |
12564 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
12565 | --ix; | |
12566 | } | |
12567 | } | |
12568 | ||
12569 | static void | |
12570 | update_global_location_list_nothrow (int inserting) | |
12571 | { | |
bfd189b1 | 12572 | volatile struct gdb_exception e; |
348d480f PA |
12573 | |
12574 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
12575 | update_global_location_list (inserting); | |
12576 | } | |
12577 | ||
12578 | /* Clear BKP from a BPS. */ | |
12579 | ||
12580 | static void | |
12581 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12582 | { | |
12583 | bpstat bs; | |
12584 | ||
12585 | for (bs = bps; bs; bs = bs->next) | |
12586 | if (bs->breakpoint_at == bpt) | |
12587 | { | |
12588 | bs->breakpoint_at = NULL; | |
12589 | bs->old_val = NULL; | |
12590 | /* bs->commands will be freed later. */ | |
12591 | } | |
12592 | } | |
12593 | ||
12594 | /* Callback for iterate_over_threads. */ | |
12595 | static int | |
12596 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12597 | { | |
12598 | struct breakpoint *bpt = data; | |
12599 | ||
12600 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12601 | return 0; | |
12602 | } | |
12603 | ||
12604 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12605 | callbacks. */ | |
12606 | ||
12607 | static void | |
12608 | say_where (struct breakpoint *b) | |
12609 | { | |
79a45e25 | 12610 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12611 | struct value_print_options opts; |
12612 | ||
12613 | get_user_print_options (&opts); | |
12614 | ||
12615 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12616 | single string. */ | |
12617 | if (b->loc == NULL) | |
12618 | { | |
12619 | printf_filtered (_(" (%s) pending."), b->addr_string); | |
12620 | } | |
12621 | else | |
12622 | { | |
f8eba3c6 | 12623 | if (opts.addressprint || b->loc->source_file == NULL) |
348d480f PA |
12624 | { |
12625 | printf_filtered (" at "); | |
12626 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), | |
12627 | gdb_stdout); | |
12628 | } | |
f8eba3c6 TT |
12629 | if (b->loc->source_file) |
12630 | { | |
12631 | /* If there is a single location, we can print the location | |
12632 | more nicely. */ | |
12633 | if (b->loc->next == NULL) | |
12634 | printf_filtered (": file %s, line %d.", | |
12635 | b->loc->source_file, b->loc->line_number); | |
12636 | else | |
12637 | /* This is not ideal, but each location may have a | |
12638 | different file name, and this at least reflects the | |
12639 | real situation somewhat. */ | |
12640 | printf_filtered (": %s.", b->addr_string); | |
12641 | } | |
348d480f PA |
12642 | |
12643 | if (b->loc->next) | |
12644 | { | |
12645 | struct bp_location *loc = b->loc; | |
12646 | int n = 0; | |
12647 | for (; loc; loc = loc->next) | |
12648 | ++n; | |
12649 | printf_filtered (" (%d locations)", n); | |
12650 | } | |
12651 | } | |
12652 | } | |
12653 | ||
348d480f PA |
12654 | /* Default bp_location_ops methods. */ |
12655 | ||
12656 | static void | |
12657 | bp_location_dtor (struct bp_location *self) | |
12658 | { | |
12659 | xfree (self->cond); | |
b775012e LM |
12660 | if (self->cond_bytecode) |
12661 | free_agent_expr (self->cond_bytecode); | |
348d480f | 12662 | xfree (self->function_name); |
f8eba3c6 | 12663 | xfree (self->source_file); |
348d480f PA |
12664 | } |
12665 | ||
12666 | static const struct bp_location_ops bp_location_ops = | |
12667 | { | |
12668 | bp_location_dtor | |
12669 | }; | |
12670 | ||
2060206e PA |
12671 | /* Default breakpoint_ops methods all breakpoint_ops ultimately |
12672 | inherit from. */ | |
348d480f | 12673 | |
2060206e PA |
12674 | static void |
12675 | base_breakpoint_dtor (struct breakpoint *self) | |
348d480f PA |
12676 | { |
12677 | decref_counted_command_line (&self->commands); | |
12678 | xfree (self->cond_string); | |
348d480f | 12679 | xfree (self->addr_string); |
f8eba3c6 | 12680 | xfree (self->filter); |
348d480f | 12681 | xfree (self->addr_string_range_end); |
348d480f PA |
12682 | } |
12683 | ||
2060206e PA |
12684 | static struct bp_location * |
12685 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f PA |
12686 | { |
12687 | struct bp_location *loc; | |
12688 | ||
12689 | loc = XNEW (struct bp_location); | |
12690 | init_bp_location (loc, &bp_location_ops, self); | |
12691 | return loc; | |
12692 | } | |
12693 | ||
2060206e PA |
12694 | static void |
12695 | base_breakpoint_re_set (struct breakpoint *b) | |
12696 | { | |
12697 | /* Nothing to re-set. */ | |
12698 | } | |
12699 | ||
12700 | #define internal_error_pure_virtual_called() \ | |
12701 | gdb_assert_not_reached ("pure virtual function called") | |
12702 | ||
12703 | static int | |
12704 | base_breakpoint_insert_location (struct bp_location *bl) | |
12705 | { | |
12706 | internal_error_pure_virtual_called (); | |
12707 | } | |
12708 | ||
12709 | static int | |
12710 | base_breakpoint_remove_location (struct bp_location *bl) | |
12711 | { | |
12712 | internal_error_pure_virtual_called (); | |
12713 | } | |
12714 | ||
12715 | static int | |
12716 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
12717 | struct address_space *aspace, | |
09ac7c10 TT |
12718 | CORE_ADDR bp_addr, |
12719 | const struct target_waitstatus *ws) | |
2060206e PA |
12720 | { |
12721 | internal_error_pure_virtual_called (); | |
12722 | } | |
12723 | ||
12724 | static void | |
12725 | base_breakpoint_check_status (bpstat bs) | |
12726 | { | |
12727 | /* Always stop. */ | |
12728 | } | |
12729 | ||
12730 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12731 | errors. */ | |
12732 | ||
12733 | static int | |
12734 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12735 | { | |
12736 | internal_error_pure_virtual_called (); | |
12737 | } | |
12738 | ||
12739 | /* A "resources_needed" breakpoint_ops method that just internal | |
12740 | errors. */ | |
12741 | ||
12742 | static int | |
12743 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12744 | { | |
12745 | internal_error_pure_virtual_called (); | |
12746 | } | |
12747 | ||
12748 | static enum print_stop_action | |
12749 | base_breakpoint_print_it (bpstat bs) | |
12750 | { | |
12751 | internal_error_pure_virtual_called (); | |
12752 | } | |
12753 | ||
12754 | static void | |
12755 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12756 | struct ui_out *uiout) | |
12757 | { | |
12758 | /* nothing */ | |
12759 | } | |
12760 | ||
12761 | static void | |
12762 | base_breakpoint_print_mention (struct breakpoint *b) | |
12763 | { | |
12764 | internal_error_pure_virtual_called (); | |
12765 | } | |
12766 | ||
12767 | static void | |
12768 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12769 | { | |
12770 | internal_error_pure_virtual_called (); | |
12771 | } | |
12772 | ||
983af33b SDJ |
12773 | static void |
12774 | base_breakpoint_create_sals_from_address (char **arg, | |
12775 | struct linespec_result *canonical, | |
12776 | enum bptype type_wanted, | |
12777 | char *addr_start, | |
12778 | char **copy_arg) | |
12779 | { | |
12780 | internal_error_pure_virtual_called (); | |
12781 | } | |
12782 | ||
12783 | static void | |
12784 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12785 | struct linespec_result *c, | |
12786 | struct linespec_sals *lsal, | |
12787 | char *cond_string, | |
e7e0cddf | 12788 | char *extra_string, |
983af33b SDJ |
12789 | enum bptype type_wanted, |
12790 | enum bpdisp disposition, | |
12791 | int thread, | |
12792 | int task, int ignore_count, | |
12793 | const struct breakpoint_ops *o, | |
12794 | int from_tty, int enabled, | |
44f238bb | 12795 | int internal, unsigned flags) |
983af33b SDJ |
12796 | { |
12797 | internal_error_pure_virtual_called (); | |
12798 | } | |
12799 | ||
12800 | static void | |
12801 | base_breakpoint_decode_linespec (struct breakpoint *b, char **s, | |
12802 | struct symtabs_and_lines *sals) | |
12803 | { | |
12804 | internal_error_pure_virtual_called (); | |
12805 | } | |
12806 | ||
2060206e PA |
12807 | static struct breakpoint_ops base_breakpoint_ops = |
12808 | { | |
12809 | base_breakpoint_dtor, | |
12810 | base_breakpoint_allocate_location, | |
12811 | base_breakpoint_re_set, | |
12812 | base_breakpoint_insert_location, | |
12813 | base_breakpoint_remove_location, | |
12814 | base_breakpoint_breakpoint_hit, | |
12815 | base_breakpoint_check_status, | |
12816 | base_breakpoint_resources_needed, | |
12817 | base_breakpoint_works_in_software_mode, | |
12818 | base_breakpoint_print_it, | |
12819 | NULL, | |
12820 | base_breakpoint_print_one_detail, | |
12821 | base_breakpoint_print_mention, | |
983af33b SDJ |
12822 | base_breakpoint_print_recreate, |
12823 | base_breakpoint_create_sals_from_address, | |
12824 | base_breakpoint_create_breakpoints_sal, | |
12825 | base_breakpoint_decode_linespec, | |
2060206e PA |
12826 | }; |
12827 | ||
12828 | /* Default breakpoint_ops methods. */ | |
12829 | ||
12830 | static void | |
348d480f PA |
12831 | bkpt_re_set (struct breakpoint *b) |
12832 | { | |
06edf0c0 PA |
12833 | /* FIXME: is this still reachable? */ |
12834 | if (b->addr_string == NULL) | |
12835 | { | |
12836 | /* Anything without a string can't be re-set. */ | |
348d480f | 12837 | delete_breakpoint (b); |
06edf0c0 | 12838 | return; |
348d480f | 12839 | } |
06edf0c0 PA |
12840 | |
12841 | breakpoint_re_set_default (b); | |
348d480f PA |
12842 | } |
12843 | ||
2060206e | 12844 | static int |
348d480f PA |
12845 | bkpt_insert_location (struct bp_location *bl) |
12846 | { | |
12847 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12848 | return target_insert_hw_breakpoint (bl->gdbarch, | |
12849 | &bl->target_info); | |
12850 | else | |
12851 | return target_insert_breakpoint (bl->gdbarch, | |
12852 | &bl->target_info); | |
12853 | } | |
12854 | ||
2060206e | 12855 | static int |
348d480f PA |
12856 | bkpt_remove_location (struct bp_location *bl) |
12857 | { | |
12858 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12859 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12860 | else | |
12861 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info); | |
12862 | } | |
12863 | ||
2060206e | 12864 | static int |
348d480f | 12865 | bkpt_breakpoint_hit (const struct bp_location *bl, |
09ac7c10 TT |
12866 | struct address_space *aspace, CORE_ADDR bp_addr, |
12867 | const struct target_waitstatus *ws) | |
348d480f PA |
12868 | { |
12869 | struct breakpoint *b = bl->owner; | |
12870 | ||
09ac7c10 | 12871 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12872 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12873 | return 0; |
12874 | ||
348d480f PA |
12875 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12876 | aspace, bp_addr)) | |
12877 | return 0; | |
12878 | ||
12879 | if (overlay_debugging /* unmapped overlay section */ | |
12880 | && section_is_overlay (bl->section) | |
12881 | && !section_is_mapped (bl->section)) | |
12882 | return 0; | |
12883 | ||
12884 | return 1; | |
12885 | } | |
12886 | ||
2060206e | 12887 | static int |
348d480f PA |
12888 | bkpt_resources_needed (const struct bp_location *bl) |
12889 | { | |
12890 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12891 | ||
12892 | return 1; | |
12893 | } | |
12894 | ||
2060206e | 12895 | static enum print_stop_action |
348d480f PA |
12896 | bkpt_print_it (bpstat bs) |
12897 | { | |
348d480f PA |
12898 | struct breakpoint *b; |
12899 | const struct bp_location *bl; | |
001c8c33 | 12900 | int bp_temp; |
79a45e25 | 12901 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12902 | |
12903 | gdb_assert (bs->bp_location_at != NULL); | |
12904 | ||
12905 | bl = bs->bp_location_at; | |
12906 | b = bs->breakpoint_at; | |
12907 | ||
001c8c33 PA |
12908 | bp_temp = b->disposition == disp_del; |
12909 | if (bl->address != bl->requested_address) | |
12910 | breakpoint_adjustment_warning (bl->requested_address, | |
12911 | bl->address, | |
12912 | b->number, 1); | |
12913 | annotate_breakpoint (b->number); | |
12914 | if (bp_temp) | |
12915 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
12916 | else | |
12917 | ui_out_text (uiout, "\nBreakpoint "); | |
12918 | if (ui_out_is_mi_like_p (uiout)) | |
348d480f | 12919 | { |
001c8c33 PA |
12920 | ui_out_field_string (uiout, "reason", |
12921 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
12922 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
06edf0c0 | 12923 | } |
001c8c33 PA |
12924 | ui_out_field_int (uiout, "bkptno", b->number); |
12925 | ui_out_text (uiout, ", "); | |
06edf0c0 | 12926 | |
001c8c33 | 12927 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12928 | } |
12929 | ||
2060206e | 12930 | static void |
06edf0c0 PA |
12931 | bkpt_print_mention (struct breakpoint *b) |
12932 | { | |
79a45e25 | 12933 | if (ui_out_is_mi_like_p (current_uiout)) |
06edf0c0 PA |
12934 | return; |
12935 | ||
12936 | switch (b->type) | |
12937 | { | |
12938 | case bp_breakpoint: | |
12939 | case bp_gnu_ifunc_resolver: | |
12940 | if (b->disposition == disp_del) | |
12941 | printf_filtered (_("Temporary breakpoint")); | |
12942 | else | |
12943 | printf_filtered (_("Breakpoint")); | |
12944 | printf_filtered (_(" %d"), b->number); | |
12945 | if (b->type == bp_gnu_ifunc_resolver) | |
12946 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
12947 | break; | |
12948 | case bp_hardware_breakpoint: | |
12949 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
12950 | break; | |
e7e0cddf SS |
12951 | case bp_dprintf: |
12952 | printf_filtered (_("Dprintf %d"), b->number); | |
12953 | break; | |
06edf0c0 PA |
12954 | } |
12955 | ||
12956 | say_where (b); | |
12957 | } | |
12958 | ||
2060206e | 12959 | static void |
06edf0c0 PA |
12960 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
12961 | { | |
12962 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
12963 | fprintf_unfiltered (fp, "tbreak"); | |
12964 | else if (tp->type == bp_breakpoint) | |
12965 | fprintf_unfiltered (fp, "break"); | |
12966 | else if (tp->type == bp_hardware_breakpoint | |
12967 | && tp->disposition == disp_del) | |
12968 | fprintf_unfiltered (fp, "thbreak"); | |
12969 | else if (tp->type == bp_hardware_breakpoint) | |
12970 | fprintf_unfiltered (fp, "hbreak"); | |
12971 | else | |
12972 | internal_error (__FILE__, __LINE__, | |
12973 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12974 | ||
2060206e | 12975 | fprintf_unfiltered (fp, " %s", tp->addr_string); |
dd11a36c | 12976 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
12977 | } |
12978 | ||
983af33b SDJ |
12979 | static void |
12980 | bkpt_create_sals_from_address (char **arg, | |
12981 | struct linespec_result *canonical, | |
12982 | enum bptype type_wanted, | |
12983 | char *addr_start, char **copy_arg) | |
12984 | { | |
12985 | create_sals_from_address_default (arg, canonical, type_wanted, | |
12986 | addr_start, copy_arg); | |
12987 | } | |
12988 | ||
12989 | static void | |
12990 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12991 | struct linespec_result *canonical, | |
12992 | struct linespec_sals *lsal, | |
12993 | char *cond_string, | |
e7e0cddf | 12994 | char *extra_string, |
983af33b SDJ |
12995 | enum bptype type_wanted, |
12996 | enum bpdisp disposition, | |
12997 | int thread, | |
12998 | int task, int ignore_count, | |
12999 | const struct breakpoint_ops *ops, | |
13000 | int from_tty, int enabled, | |
44f238bb | 13001 | int internal, unsigned flags) |
983af33b SDJ |
13002 | { |
13003 | create_breakpoints_sal_default (gdbarch, canonical, lsal, | |
e7e0cddf SS |
13004 | cond_string, extra_string, |
13005 | type_wanted, | |
983af33b SDJ |
13006 | disposition, thread, task, |
13007 | ignore_count, ops, from_tty, | |
44f238bb | 13008 | enabled, internal, flags); |
983af33b SDJ |
13009 | } |
13010 | ||
13011 | static void | |
13012 | bkpt_decode_linespec (struct breakpoint *b, char **s, | |
13013 | struct symtabs_and_lines *sals) | |
13014 | { | |
13015 | decode_linespec_default (b, s, sals); | |
13016 | } | |
13017 | ||
06edf0c0 PA |
13018 | /* Virtual table for internal breakpoints. */ |
13019 | ||
13020 | static void | |
13021 | internal_bkpt_re_set (struct breakpoint *b) | |
13022 | { | |
13023 | switch (b->type) | |
13024 | { | |
13025 | /* Delete overlay event and longjmp master breakpoints; they | |
13026 | will be reset later by breakpoint_re_set. */ | |
13027 | case bp_overlay_event: | |
13028 | case bp_longjmp_master: | |
13029 | case bp_std_terminate_master: | |
13030 | case bp_exception_master: | |
13031 | delete_breakpoint (b); | |
13032 | break; | |
13033 | ||
13034 | /* This breakpoint is special, it's set up when the inferior | |
13035 | starts and we really don't want to touch it. */ | |
13036 | case bp_shlib_event: | |
13037 | ||
13038 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
13039 | it is set up, we do not want to touch it. */ | |
13040 | case bp_thread_event: | |
13041 | break; | |
13042 | } | |
13043 | } | |
13044 | ||
13045 | static void | |
13046 | internal_bkpt_check_status (bpstat bs) | |
13047 | { | |
a9b3a50f PA |
13048 | if (bs->breakpoint_at->type == bp_shlib_event) |
13049 | { | |
13050 | /* If requested, stop when the dynamic linker notifies GDB of | |
13051 | events. This allows the user to get control and place | |
13052 | breakpoints in initializer routines for dynamically loaded | |
13053 | objects (among other things). */ | |
13054 | bs->stop = stop_on_solib_events; | |
13055 | bs->print = stop_on_solib_events; | |
13056 | } | |
13057 | else | |
13058 | bs->stop = 0; | |
06edf0c0 PA |
13059 | } |
13060 | ||
13061 | static enum print_stop_action | |
13062 | internal_bkpt_print_it (bpstat bs) | |
13063 | { | |
36dfb11c | 13064 | struct ui_out *uiout = current_uiout; |
06edf0c0 | 13065 | struct breakpoint *b; |
06edf0c0 | 13066 | |
06edf0c0 PA |
13067 | b = bs->breakpoint_at; |
13068 | ||
06edf0c0 PA |
13069 | switch (b->type) |
13070 | { | |
348d480f PA |
13071 | case bp_shlib_event: |
13072 | /* Did we stop because the user set the stop_on_solib_events | |
13073 | variable? (If so, we report this as a generic, "Stopped due | |
13074 | to shlib event" message.) */ | |
edcc5120 | 13075 | print_solib_event (0); |
348d480f PA |
13076 | break; |
13077 | ||
13078 | case bp_thread_event: | |
13079 | /* Not sure how we will get here. | |
13080 | GDB should not stop for these breakpoints. */ | |
13081 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13082 | break; |
13083 | ||
13084 | case bp_overlay_event: | |
13085 | /* By analogy with the thread event, GDB should not stop for these. */ | |
13086 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13087 | break; |
13088 | ||
13089 | case bp_longjmp_master: | |
13090 | /* These should never be enabled. */ | |
13091 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13092 | break; |
13093 | ||
13094 | case bp_std_terminate_master: | |
13095 | /* These should never be enabled. */ | |
13096 | printf_filtered (_("std::terminate Master Breakpoint: " | |
13097 | "gdb should not stop!\n")); | |
348d480f PA |
13098 | break; |
13099 | ||
13100 | case bp_exception_master: | |
13101 | /* These should never be enabled. */ | |
13102 | printf_filtered (_("Exception Master Breakpoint: " | |
13103 | "gdb should not stop!\n")); | |
06edf0c0 PA |
13104 | break; |
13105 | } | |
13106 | ||
001c8c33 | 13107 | return PRINT_NOTHING; |
06edf0c0 PA |
13108 | } |
13109 | ||
13110 | static void | |
13111 | internal_bkpt_print_mention (struct breakpoint *b) | |
13112 | { | |
13113 | /* Nothing to mention. These breakpoints are internal. */ | |
13114 | } | |
13115 | ||
06edf0c0 PA |
13116 | /* Virtual table for momentary breakpoints */ |
13117 | ||
13118 | static void | |
13119 | momentary_bkpt_re_set (struct breakpoint *b) | |
13120 | { | |
13121 | /* Keep temporary breakpoints, which can be encountered when we step | |
13122 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
13123 | Otherwise these should have been blown away via the cleanup chain | |
13124 | or by breakpoint_init_inferior when we rerun the executable. */ | |
13125 | } | |
13126 | ||
13127 | static void | |
13128 | momentary_bkpt_check_status (bpstat bs) | |
13129 | { | |
13130 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
13131 | } | |
13132 | ||
13133 | static enum print_stop_action | |
13134 | momentary_bkpt_print_it (bpstat bs) | |
13135 | { | |
79a45e25 PA |
13136 | struct ui_out *uiout = current_uiout; |
13137 | ||
001c8c33 | 13138 | if (ui_out_is_mi_like_p (uiout)) |
06edf0c0 | 13139 | { |
001c8c33 | 13140 | struct breakpoint *b = bs->breakpoint_at; |
348d480f | 13141 | |
001c8c33 PA |
13142 | switch (b->type) |
13143 | { | |
13144 | case bp_finish: | |
13145 | ui_out_field_string | |
13146 | (uiout, "reason", | |
13147 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
13148 | break; | |
348d480f | 13149 | |
001c8c33 PA |
13150 | case bp_until: |
13151 | ui_out_field_string | |
13152 | (uiout, "reason", | |
13153 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
13154 | break; | |
13155 | } | |
348d480f PA |
13156 | } |
13157 | ||
001c8c33 | 13158 | return PRINT_UNKNOWN; |
348d480f PA |
13159 | } |
13160 | ||
06edf0c0 PA |
13161 | static void |
13162 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 13163 | { |
06edf0c0 | 13164 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
13165 | } |
13166 | ||
e2e4d78b JK |
13167 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
13168 | ||
13169 | It gets cleared already on the removal of the first one of such placed | |
13170 | breakpoints. This is OK as they get all removed altogether. */ | |
13171 | ||
13172 | static void | |
13173 | longjmp_bkpt_dtor (struct breakpoint *self) | |
13174 | { | |
13175 | struct thread_info *tp = find_thread_id (self->thread); | |
13176 | ||
13177 | if (tp) | |
13178 | tp->initiating_frame = null_frame_id; | |
13179 | ||
13180 | momentary_breakpoint_ops.dtor (self); | |
13181 | } | |
13182 | ||
55aa24fb SDJ |
13183 | /* Specific methods for probe breakpoints. */ |
13184 | ||
13185 | static int | |
13186 | bkpt_probe_insert_location (struct bp_location *bl) | |
13187 | { | |
13188 | int v = bkpt_insert_location (bl); | |
13189 | ||
13190 | if (v == 0) | |
13191 | { | |
13192 | /* The insertion was successful, now let's set the probe's semaphore | |
13193 | if needed. */ | |
13194 | bl->probe->pops->set_semaphore (bl->probe, bl->gdbarch); | |
13195 | } | |
13196 | ||
13197 | return v; | |
13198 | } | |
13199 | ||
13200 | static int | |
13201 | bkpt_probe_remove_location (struct bp_location *bl) | |
13202 | { | |
13203 | /* Let's clear the semaphore before removing the location. */ | |
13204 | bl->probe->pops->clear_semaphore (bl->probe, bl->gdbarch); | |
13205 | ||
13206 | return bkpt_remove_location (bl); | |
13207 | } | |
13208 | ||
13209 | static void | |
13210 | bkpt_probe_create_sals_from_address (char **arg, | |
13211 | struct linespec_result *canonical, | |
13212 | enum bptype type_wanted, | |
13213 | char *addr_start, char **copy_arg) | |
13214 | { | |
13215 | struct linespec_sals lsal; | |
13216 | ||
13217 | lsal.sals = parse_probes (arg, canonical); | |
13218 | ||
13219 | *copy_arg = xstrdup (canonical->addr_string); | |
13220 | lsal.canonical = xstrdup (*copy_arg); | |
13221 | ||
13222 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
13223 | } | |
13224 | ||
13225 | static void | |
13226 | bkpt_probe_decode_linespec (struct breakpoint *b, char **s, | |
13227 | struct symtabs_and_lines *sals) | |
13228 | { | |
13229 | *sals = parse_probes (s, NULL); | |
13230 | if (!sals->sals) | |
13231 | error (_("probe not found")); | |
13232 | } | |
13233 | ||
348d480f | 13234 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 13235 | |
348d480f PA |
13236 | static void |
13237 | tracepoint_re_set (struct breakpoint *b) | |
13238 | { | |
13239 | breakpoint_re_set_default (b); | |
13240 | } | |
876fa593 | 13241 | |
348d480f PA |
13242 | static int |
13243 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
09ac7c10 TT |
13244 | struct address_space *aspace, CORE_ADDR bp_addr, |
13245 | const struct target_waitstatus *ws) | |
348d480f PA |
13246 | { |
13247 | /* By definition, the inferior does not report stops at | |
13248 | tracepoints. */ | |
13249 | return 0; | |
74960c60 VP |
13250 | } |
13251 | ||
13252 | static void | |
348d480f PA |
13253 | tracepoint_print_one_detail (const struct breakpoint *self, |
13254 | struct ui_out *uiout) | |
74960c60 | 13255 | { |
d9b3f62e PA |
13256 | struct tracepoint *tp = (struct tracepoint *) self; |
13257 | if (tp->static_trace_marker_id) | |
348d480f PA |
13258 | { |
13259 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 13260 | |
348d480f PA |
13261 | ui_out_text (uiout, "\tmarker id is "); |
13262 | ui_out_field_string (uiout, "static-tracepoint-marker-string-id", | |
d9b3f62e | 13263 | tp->static_trace_marker_id); |
348d480f PA |
13264 | ui_out_text (uiout, "\n"); |
13265 | } | |
0d381245 VP |
13266 | } |
13267 | ||
a474d7c2 | 13268 | static void |
348d480f | 13269 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 13270 | { |
79a45e25 | 13271 | if (ui_out_is_mi_like_p (current_uiout)) |
348d480f | 13272 | return; |
cc59ec59 | 13273 | |
348d480f PA |
13274 | switch (b->type) |
13275 | { | |
13276 | case bp_tracepoint: | |
13277 | printf_filtered (_("Tracepoint")); | |
13278 | printf_filtered (_(" %d"), b->number); | |
13279 | break; | |
13280 | case bp_fast_tracepoint: | |
13281 | printf_filtered (_("Fast tracepoint")); | |
13282 | printf_filtered (_(" %d"), b->number); | |
13283 | break; | |
13284 | case bp_static_tracepoint: | |
13285 | printf_filtered (_("Static tracepoint")); | |
13286 | printf_filtered (_(" %d"), b->number); | |
13287 | break; | |
13288 | default: | |
13289 | internal_error (__FILE__, __LINE__, | |
13290 | _("unhandled tracepoint type %d"), (int) b->type); | |
13291 | } | |
13292 | ||
13293 | say_where (b); | |
a474d7c2 PA |
13294 | } |
13295 | ||
348d480f | 13296 | static void |
d9b3f62e | 13297 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 13298 | { |
d9b3f62e PA |
13299 | struct tracepoint *tp = (struct tracepoint *) self; |
13300 | ||
13301 | if (self->type == bp_fast_tracepoint) | |
348d480f | 13302 | fprintf_unfiltered (fp, "ftrace"); |
d9b3f62e | 13303 | if (self->type == bp_static_tracepoint) |
348d480f | 13304 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 13305 | else if (self->type == bp_tracepoint) |
348d480f PA |
13306 | fprintf_unfiltered (fp, "trace"); |
13307 | else | |
13308 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 13309 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 13310 | |
d9b3f62e PA |
13311 | fprintf_unfiltered (fp, " %s", self->addr_string); |
13312 | print_recreate_thread (self, fp); | |
13313 | ||
13314 | if (tp->pass_count) | |
13315 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
13316 | } |
13317 | ||
983af33b SDJ |
13318 | static void |
13319 | tracepoint_create_sals_from_address (char **arg, | |
13320 | struct linespec_result *canonical, | |
13321 | enum bptype type_wanted, | |
13322 | char *addr_start, char **copy_arg) | |
13323 | { | |
13324 | create_sals_from_address_default (arg, canonical, type_wanted, | |
13325 | addr_start, copy_arg); | |
13326 | } | |
13327 | ||
13328 | static void | |
13329 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13330 | struct linespec_result *canonical, | |
13331 | struct linespec_sals *lsal, | |
13332 | char *cond_string, | |
e7e0cddf | 13333 | char *extra_string, |
983af33b SDJ |
13334 | enum bptype type_wanted, |
13335 | enum bpdisp disposition, | |
13336 | int thread, | |
13337 | int task, int ignore_count, | |
13338 | const struct breakpoint_ops *ops, | |
13339 | int from_tty, int enabled, | |
44f238bb | 13340 | int internal, unsigned flags) |
983af33b SDJ |
13341 | { |
13342 | create_breakpoints_sal_default (gdbarch, canonical, lsal, | |
e7e0cddf SS |
13343 | cond_string, extra_string, |
13344 | type_wanted, | |
983af33b SDJ |
13345 | disposition, thread, task, |
13346 | ignore_count, ops, from_tty, | |
44f238bb | 13347 | enabled, internal, flags); |
983af33b SDJ |
13348 | } |
13349 | ||
13350 | static void | |
13351 | tracepoint_decode_linespec (struct breakpoint *b, char **s, | |
13352 | struct symtabs_and_lines *sals) | |
13353 | { | |
13354 | decode_linespec_default (b, s, sals); | |
13355 | } | |
13356 | ||
2060206e | 13357 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 13358 | |
55aa24fb SDJ |
13359 | /* The breakpoint_ops structure to be use on tracepoints placed in a |
13360 | static probe. */ | |
13361 | ||
13362 | static void | |
13363 | tracepoint_probe_create_sals_from_address (char **arg, | |
13364 | struct linespec_result *canonical, | |
13365 | enum bptype type_wanted, | |
13366 | char *addr_start, char **copy_arg) | |
13367 | { | |
13368 | /* We use the same method for breakpoint on probes. */ | |
13369 | bkpt_probe_create_sals_from_address (arg, canonical, type_wanted, | |
13370 | addr_start, copy_arg); | |
13371 | } | |
13372 | ||
13373 | static void | |
13374 | tracepoint_probe_decode_linespec (struct breakpoint *b, char **s, | |
13375 | struct symtabs_and_lines *sals) | |
13376 | { | |
13377 | /* We use the same method for breakpoint on probes. */ | |
13378 | bkpt_probe_decode_linespec (b, s, sals); | |
13379 | } | |
13380 | ||
13381 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
13382 | ||
983af33b SDJ |
13383 | /* The breakpoint_ops structure to be used on static tracepoints with |
13384 | markers (`-m'). */ | |
13385 | ||
13386 | static void | |
13387 | strace_marker_create_sals_from_address (char **arg, | |
13388 | struct linespec_result *canonical, | |
13389 | enum bptype type_wanted, | |
13390 | char *addr_start, char **copy_arg) | |
13391 | { | |
13392 | struct linespec_sals lsal; | |
13393 | ||
13394 | lsal.sals = decode_static_tracepoint_spec (arg); | |
13395 | ||
13396 | *copy_arg = savestring (addr_start, *arg - addr_start); | |
13397 | ||
13398 | canonical->addr_string = xstrdup (*copy_arg); | |
13399 | lsal.canonical = xstrdup (*copy_arg); | |
13400 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
13401 | } | |
13402 | ||
13403 | static void | |
13404 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13405 | struct linespec_result *canonical, | |
13406 | struct linespec_sals *lsal, | |
13407 | char *cond_string, | |
e7e0cddf | 13408 | char *extra_string, |
983af33b SDJ |
13409 | enum bptype type_wanted, |
13410 | enum bpdisp disposition, | |
13411 | int thread, | |
13412 | int task, int ignore_count, | |
13413 | const struct breakpoint_ops *ops, | |
13414 | int from_tty, int enabled, | |
44f238bb | 13415 | int internal, unsigned flags) |
983af33b SDJ |
13416 | { |
13417 | int i; | |
13418 | ||
13419 | /* If the user is creating a static tracepoint by marker id | |
13420 | (strace -m MARKER_ID), then store the sals index, so that | |
13421 | breakpoint_re_set can try to match up which of the newly | |
13422 | found markers corresponds to this one, and, don't try to | |
13423 | expand multiple locations for each sal, given than SALS | |
13424 | already should contain all sals for MARKER_ID. */ | |
13425 | ||
13426 | for (i = 0; i < lsal->sals.nelts; ++i) | |
13427 | { | |
13428 | struct symtabs_and_lines expanded; | |
13429 | struct tracepoint *tp; | |
13430 | struct cleanup *old_chain; | |
13431 | char *addr_string; | |
13432 | ||
13433 | expanded.nelts = 1; | |
13434 | expanded.sals = &lsal->sals.sals[i]; | |
13435 | ||
13436 | addr_string = xstrdup (canonical->addr_string); | |
13437 | old_chain = make_cleanup (xfree, addr_string); | |
13438 | ||
13439 | tp = XCNEW (struct tracepoint); | |
13440 | init_breakpoint_sal (&tp->base, gdbarch, expanded, | |
13441 | addr_string, NULL, | |
e7e0cddf SS |
13442 | cond_string, extra_string, |
13443 | type_wanted, disposition, | |
983af33b | 13444 | thread, task, ignore_count, ops, |
44f238bb | 13445 | from_tty, enabled, internal, flags, |
983af33b SDJ |
13446 | canonical->special_display); |
13447 | /* Given that its possible to have multiple markers with | |
13448 | the same string id, if the user is creating a static | |
13449 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
13450 | store the sals index, so that breakpoint_re_set can | |
13451 | try to match up which of the newly found markers | |
13452 | corresponds to this one */ | |
13453 | tp->static_trace_marker_id_idx = i; | |
13454 | ||
13455 | install_breakpoint (internal, &tp->base, 0); | |
13456 | ||
13457 | discard_cleanups (old_chain); | |
13458 | } | |
13459 | } | |
13460 | ||
13461 | static void | |
13462 | strace_marker_decode_linespec (struct breakpoint *b, char **s, | |
13463 | struct symtabs_and_lines *sals) | |
13464 | { | |
13465 | struct tracepoint *tp = (struct tracepoint *) b; | |
13466 | ||
13467 | *sals = decode_static_tracepoint_spec (s); | |
13468 | if (sals->nelts > tp->static_trace_marker_id_idx) | |
13469 | { | |
13470 | sals->sals[0] = sals->sals[tp->static_trace_marker_id_idx]; | |
13471 | sals->nelts = 1; | |
13472 | } | |
13473 | else | |
13474 | error (_("marker %s not found"), tp->static_trace_marker_id); | |
13475 | } | |
13476 | ||
13477 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13478 | ||
13479 | static int | |
13480 | strace_marker_p (struct breakpoint *b) | |
13481 | { | |
13482 | return b->ops == &strace_marker_breakpoint_ops; | |
13483 | } | |
13484 | ||
53a5351d | 13485 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13486 | structures. */ |
c906108c SS |
13487 | |
13488 | void | |
fba45db2 | 13489 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13490 | { |
52f0bd74 | 13491 | struct breakpoint *b; |
c906108c | 13492 | |
8a3fe4f8 | 13493 | gdb_assert (bpt != NULL); |
c906108c | 13494 | |
4a64f543 MS |
13495 | /* Has this bp already been deleted? This can happen because |
13496 | multiple lists can hold pointers to bp's. bpstat lists are | |
13497 | especial culprits. | |
13498 | ||
13499 | One example of this happening is a watchpoint's scope bp. When | |
13500 | the scope bp triggers, we notice that the watchpoint is out of | |
13501 | scope, and delete it. We also delete its scope bp. But the | |
13502 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13503 | That bpstat is then checked for auto-deleting bp's, which are | |
13504 | deleted. | |
13505 | ||
13506 | A real solution to this problem might involve reference counts in | |
13507 | bp's, and/or giving them pointers back to their referencing | |
13508 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13509 | storage when no more references were extent. A cheaper bandaid | |
13510 | was chosen. */ | |
c906108c SS |
13511 | if (bpt->type == bp_none) |
13512 | return; | |
13513 | ||
4a64f543 MS |
13514 | /* At least avoid this stale reference until the reference counting |
13515 | of breakpoints gets resolved. */ | |
d0fb5eae | 13516 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13517 | { |
d0fb5eae | 13518 | struct breakpoint *related; |
3a5c3e22 | 13519 | struct watchpoint *w; |
d0fb5eae JK |
13520 | |
13521 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13522 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13523 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13524 | w = (struct watchpoint *) bpt; |
13525 | else | |
13526 | w = NULL; | |
13527 | if (w != NULL) | |
13528 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13529 | |
13530 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13531 | for (related = bpt; related->related_breakpoint != bpt; | |
13532 | related = related->related_breakpoint); | |
13533 | related->related_breakpoint = bpt->related_breakpoint; | |
13534 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13535 | } |
13536 | ||
a9634178 TJB |
13537 | /* watch_command_1 creates a watchpoint but only sets its number if |
13538 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13539 | a problem in that process, we'll be asked to delete the half-created | |
13540 | watchpoint. In that case, don't announce the deletion. */ | |
13541 | if (bpt->number) | |
13542 | observer_notify_breakpoint_deleted (bpt); | |
c906108c | 13543 | |
c906108c SS |
13544 | if (breakpoint_chain == bpt) |
13545 | breakpoint_chain = bpt->next; | |
13546 | ||
c906108c SS |
13547 | ALL_BREAKPOINTS (b) |
13548 | if (b->next == bpt) | |
c5aa993b JM |
13549 | { |
13550 | b->next = bpt->next; | |
13551 | break; | |
13552 | } | |
c906108c | 13553 | |
f431efe5 PA |
13554 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13555 | been freed. */ | |
13556 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13557 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13558 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13559 | commands are associated with the bpstat; if we remove it here, | |
13560 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13561 | event-top.c won't do anything, and temporary breakpoints with | |
13562 | commands won't work. */ | |
13563 | ||
13564 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13565 | ||
4a64f543 MS |
13566 | /* Now that breakpoint is removed from breakpoint list, update the |
13567 | global location list. This will remove locations that used to | |
13568 | belong to this breakpoint. Do this before freeing the breakpoint | |
13569 | itself, since remove_breakpoint looks at location's owner. It | |
13570 | might be better design to have location completely | |
13571 | self-contained, but it's not the case now. */ | |
b60e7edf | 13572 | update_global_location_list (0); |
74960c60 | 13573 | |
348d480f | 13574 | bpt->ops->dtor (bpt); |
4a64f543 MS |
13575 | /* On the chance that someone will soon try again to delete this |
13576 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13577 | bpt->type = bp_none; |
b8c9b27d | 13578 | xfree (bpt); |
c906108c SS |
13579 | } |
13580 | ||
4d6140d9 AC |
13581 | static void |
13582 | do_delete_breakpoint_cleanup (void *b) | |
13583 | { | |
13584 | delete_breakpoint (b); | |
13585 | } | |
13586 | ||
13587 | struct cleanup * | |
13588 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
13589 | { | |
13590 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
13591 | } | |
13592 | ||
51be5b68 PA |
13593 | /* Iterator function to call a user-provided callback function once |
13594 | for each of B and its related breakpoints. */ | |
13595 | ||
13596 | static void | |
13597 | iterate_over_related_breakpoints (struct breakpoint *b, | |
13598 | void (*function) (struct breakpoint *, | |
13599 | void *), | |
13600 | void *data) | |
13601 | { | |
13602 | struct breakpoint *related; | |
13603 | ||
13604 | related = b; | |
13605 | do | |
13606 | { | |
13607 | struct breakpoint *next; | |
13608 | ||
13609 | /* FUNCTION may delete RELATED. */ | |
13610 | next = related->related_breakpoint; | |
13611 | ||
13612 | if (next == related) | |
13613 | { | |
13614 | /* RELATED is the last ring entry. */ | |
13615 | function (related, data); | |
13616 | ||
13617 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13618 | B. There's nothing left to do anyway, so just break | |
13619 | out. */ | |
13620 | break; | |
13621 | } | |
13622 | else | |
13623 | function (related, data); | |
13624 | ||
13625 | related = next; | |
13626 | } | |
13627 | while (related != b); | |
13628 | } | |
95a42b64 TT |
13629 | |
13630 | static void | |
13631 | do_delete_breakpoint (struct breakpoint *b, void *ignore) | |
13632 | { | |
13633 | delete_breakpoint (b); | |
13634 | } | |
13635 | ||
51be5b68 PA |
13636 | /* A callback for map_breakpoint_numbers that calls |
13637 | delete_breakpoint. */ | |
13638 | ||
13639 | static void | |
13640 | do_map_delete_breakpoint (struct breakpoint *b, void *ignore) | |
13641 | { | |
13642 | iterate_over_related_breakpoints (b, do_delete_breakpoint, NULL); | |
13643 | } | |
13644 | ||
c906108c | 13645 | void |
fba45db2 | 13646 | delete_command (char *arg, int from_tty) |
c906108c | 13647 | { |
35df4500 | 13648 | struct breakpoint *b, *b_tmp; |
c906108c | 13649 | |
ea9365bb TT |
13650 | dont_repeat (); |
13651 | ||
c906108c SS |
13652 | if (arg == 0) |
13653 | { | |
13654 | int breaks_to_delete = 0; | |
13655 | ||
46c6471b PA |
13656 | /* Delete all breakpoints if no argument. Do not delete |
13657 | internal breakpoints, these have to be deleted with an | |
13658 | explicit breakpoint number argument. */ | |
c5aa993b | 13659 | ALL_BREAKPOINTS (b) |
46c6471b | 13660 | if (user_breakpoint_p (b)) |
973d738b DJ |
13661 | { |
13662 | breaks_to_delete = 1; | |
13663 | break; | |
13664 | } | |
c906108c SS |
13665 | |
13666 | /* Ask user only if there are some breakpoints to delete. */ | |
13667 | if (!from_tty | |
e2e0b3e5 | 13668 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 13669 | { |
35df4500 | 13670 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13671 | if (user_breakpoint_p (b)) |
c5aa993b | 13672 | delete_breakpoint (b); |
c906108c SS |
13673 | } |
13674 | } | |
13675 | else | |
51be5b68 | 13676 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
c906108c SS |
13677 | } |
13678 | ||
0d381245 VP |
13679 | static int |
13680 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 13681 | { |
0d381245 | 13682 | for (; loc; loc = loc->next) |
8645ff69 UW |
13683 | if (!loc->shlib_disabled |
13684 | && !loc->pspace->executing_startup) | |
0d381245 VP |
13685 | return 0; |
13686 | return 1; | |
fe3f5fa8 VP |
13687 | } |
13688 | ||
776592bf DE |
13689 | /* Subroutine of update_breakpoint_locations to simplify it. |
13690 | Return non-zero if multiple fns in list LOC have the same name. | |
13691 | Null names are ignored. */ | |
13692 | ||
13693 | static int | |
13694 | ambiguous_names_p (struct bp_location *loc) | |
13695 | { | |
13696 | struct bp_location *l; | |
13697 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
cc59ec59 MS |
13698 | (int (*) (const void *, |
13699 | const void *)) streq, | |
776592bf DE |
13700 | NULL, xcalloc, xfree); |
13701 | ||
13702 | for (l = loc; l != NULL; l = l->next) | |
13703 | { | |
13704 | const char **slot; | |
13705 | const char *name = l->function_name; | |
13706 | ||
13707 | /* Allow for some names to be NULL, ignore them. */ | |
13708 | if (name == NULL) | |
13709 | continue; | |
13710 | ||
13711 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
13712 | INSERT); | |
4a64f543 MS |
13713 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13714 | returns NULL. */ | |
776592bf DE |
13715 | if (*slot != NULL) |
13716 | { | |
13717 | htab_delete (htab); | |
13718 | return 1; | |
13719 | } | |
13720 | *slot = name; | |
13721 | } | |
13722 | ||
13723 | htab_delete (htab); | |
13724 | return 0; | |
13725 | } | |
13726 | ||
0fb4aa4b PA |
13727 | /* When symbols change, it probably means the sources changed as well, |
13728 | and it might mean the static tracepoint markers are no longer at | |
13729 | the same address or line numbers they used to be at last we | |
13730 | checked. Losing your static tracepoints whenever you rebuild is | |
13731 | undesirable. This function tries to resync/rematch gdb static | |
13732 | tracepoints with the markers on the target, for static tracepoints | |
13733 | that have not been set by marker id. Static tracepoint that have | |
13734 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13735 | The heuristic is: | |
13736 | ||
13737 | 1) For a tracepoint set at a specific address, look for a marker at | |
13738 | the old PC. If one is found there, assume to be the same marker. | |
13739 | If the name / string id of the marker found is different from the | |
13740 | previous known name, assume that means the user renamed the marker | |
13741 | in the sources, and output a warning. | |
13742 | ||
13743 | 2) For a tracepoint set at a given line number, look for a marker | |
13744 | at the new address of the old line number. If one is found there, | |
13745 | assume to be the same marker. If the name / string id of the | |
13746 | marker found is different from the previous known name, assume that | |
13747 | means the user renamed the marker in the sources, and output a | |
13748 | warning. | |
13749 | ||
13750 | 3) If a marker is no longer found at the same address or line, it | |
13751 | may mean the marker no longer exists. But it may also just mean | |
13752 | the code changed a bit. Maybe the user added a few lines of code | |
13753 | that made the marker move up or down (in line number terms). Ask | |
13754 | the target for info about the marker with the string id as we knew | |
13755 | it. If found, update line number and address in the matching | |
13756 | static tracepoint. This will get confused if there's more than one | |
13757 | marker with the same ID (possible in UST, although unadvised | |
13758 | precisely because it confuses tools). */ | |
13759 | ||
13760 | static struct symtab_and_line | |
13761 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13762 | { | |
d9b3f62e | 13763 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13764 | struct static_tracepoint_marker marker; |
13765 | CORE_ADDR pc; | |
0fb4aa4b PA |
13766 | |
13767 | pc = sal.pc; | |
13768 | if (sal.line) | |
13769 | find_line_pc (sal.symtab, sal.line, &pc); | |
13770 | ||
13771 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13772 | { | |
d9b3f62e | 13773 | if (strcmp (tp->static_trace_marker_id, marker.str_id) != 0) |
0fb4aa4b PA |
13774 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
13775 | b->number, | |
d9b3f62e | 13776 | tp->static_trace_marker_id, marker.str_id); |
0fb4aa4b | 13777 | |
d9b3f62e PA |
13778 | xfree (tp->static_trace_marker_id); |
13779 | tp->static_trace_marker_id = xstrdup (marker.str_id); | |
0fb4aa4b PA |
13780 | release_static_tracepoint_marker (&marker); |
13781 | ||
13782 | return sal; | |
13783 | } | |
13784 | ||
13785 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13786 | by string ID. */ | |
13787 | if (!sal.explicit_pc | |
13788 | && sal.line != 0 | |
13789 | && sal.symtab != NULL | |
d9b3f62e | 13790 | && tp->static_trace_marker_id != NULL) |
0fb4aa4b PA |
13791 | { |
13792 | VEC(static_tracepoint_marker_p) *markers; | |
13793 | ||
13794 | markers | |
d9b3f62e | 13795 | = target_static_tracepoint_markers_by_strid (tp->static_trace_marker_id); |
0fb4aa4b PA |
13796 | |
13797 | if (!VEC_empty(static_tracepoint_marker_p, markers)) | |
13798 | { | |
80e1d417 | 13799 | struct symtab_and_line sal2; |
0fb4aa4b | 13800 | struct symbol *sym; |
80e1d417 | 13801 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13802 | struct ui_out *uiout = current_uiout; |
0fb4aa4b | 13803 | |
80e1d417 | 13804 | tpmarker = VEC_index (static_tracepoint_marker_p, markers, 0); |
0fb4aa4b | 13805 | |
d9b3f62e | 13806 | xfree (tp->static_trace_marker_id); |
80e1d417 | 13807 | tp->static_trace_marker_id = xstrdup (tpmarker->str_id); |
0fb4aa4b PA |
13808 | |
13809 | warning (_("marker for static tracepoint %d (%s) not " | |
13810 | "found at previous line number"), | |
d9b3f62e | 13811 | b->number, tp->static_trace_marker_id); |
0fb4aa4b | 13812 | |
80e1d417 | 13813 | init_sal (&sal2); |
0fb4aa4b | 13814 | |
80e1d417 | 13815 | sal2.pc = tpmarker->address; |
0fb4aa4b | 13816 | |
80e1d417 AS |
13817 | sal2 = find_pc_line (tpmarker->address, 0); |
13818 | sym = find_pc_sect_function (tpmarker->address, NULL); | |
0fb4aa4b PA |
13819 | ui_out_text (uiout, "Now in "); |
13820 | if (sym) | |
13821 | { | |
13822 | ui_out_field_string (uiout, "func", | |
13823 | SYMBOL_PRINT_NAME (sym)); | |
13824 | ui_out_text (uiout, " at "); | |
13825 | } | |
80e1d417 | 13826 | ui_out_field_string (uiout, "file", sal2.symtab->filename); |
0fb4aa4b PA |
13827 | ui_out_text (uiout, ":"); |
13828 | ||
13829 | if (ui_out_is_mi_like_p (uiout)) | |
13830 | { | |
0b0865da | 13831 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b PA |
13832 | |
13833 | if (fullname) | |
13834 | ui_out_field_string (uiout, "fullname", fullname); | |
13835 | } | |
13836 | ||
80e1d417 | 13837 | ui_out_field_int (uiout, "line", sal2.line); |
0fb4aa4b PA |
13838 | ui_out_text (uiout, "\n"); |
13839 | ||
80e1d417 | 13840 | b->loc->line_number = sal2.line; |
0fb4aa4b | 13841 | |
f8eba3c6 | 13842 | xfree (b->loc->source_file); |
0fb4aa4b | 13843 | if (sym) |
80e1d417 | 13844 | b->loc->source_file = xstrdup (sal2.symtab->filename); |
0fb4aa4b | 13845 | else |
f8eba3c6 | 13846 | b->loc->source_file = NULL; |
0fb4aa4b PA |
13847 | |
13848 | xfree (b->addr_string); | |
13849 | b->addr_string = xstrprintf ("%s:%d", | |
80e1d417 | 13850 | sal2.symtab->filename, |
f8eba3c6 | 13851 | b->loc->line_number); |
0fb4aa4b PA |
13852 | |
13853 | /* Might be nice to check if function changed, and warn if | |
13854 | so. */ | |
13855 | ||
80e1d417 | 13856 | release_static_tracepoint_marker (tpmarker); |
0fb4aa4b PA |
13857 | } |
13858 | } | |
13859 | return sal; | |
13860 | } | |
13861 | ||
8d3788bd VP |
13862 | /* Returns 1 iff locations A and B are sufficiently same that |
13863 | we don't need to report breakpoint as changed. */ | |
13864 | ||
13865 | static int | |
13866 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
13867 | { | |
13868 | while (a && b) | |
13869 | { | |
13870 | if (a->address != b->address) | |
13871 | return 0; | |
13872 | ||
13873 | if (a->shlib_disabled != b->shlib_disabled) | |
13874 | return 0; | |
13875 | ||
13876 | if (a->enabled != b->enabled) | |
13877 | return 0; | |
13878 | ||
13879 | a = a->next; | |
13880 | b = b->next; | |
13881 | } | |
13882 | ||
13883 | if ((a == NULL) != (b == NULL)) | |
13884 | return 0; | |
13885 | ||
13886 | return 1; | |
13887 | } | |
13888 | ||
f1310107 TJB |
13889 | /* Create new breakpoint locations for B (a hardware or software breakpoint) |
13890 | based on SALS and SALS_END. If SALS_END.NELTS is not zero, then B is | |
13891 | a ranged breakpoint. */ | |
13892 | ||
0e30163f | 13893 | void |
0d381245 | 13894 | update_breakpoint_locations (struct breakpoint *b, |
f1310107 TJB |
13895 | struct symtabs_and_lines sals, |
13896 | struct symtabs_and_lines sals_end) | |
fe3f5fa8 VP |
13897 | { |
13898 | int i; | |
0d381245 VP |
13899 | struct bp_location *existing_locations = b->loc; |
13900 | ||
f8eba3c6 TT |
13901 | if (sals_end.nelts != 0 && (sals.nelts != 1 || sals_end.nelts != 1)) |
13902 | { | |
13903 | /* Ranged breakpoints have only one start location and one end | |
13904 | location. */ | |
13905 | b->enable_state = bp_disabled; | |
13906 | update_global_location_list (1); | |
13907 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " | |
13908 | "multiple locations found\n"), | |
13909 | b->number); | |
13910 | return; | |
13911 | } | |
f1310107 | 13912 | |
4a64f543 MS |
13913 | /* If there's no new locations, and all existing locations are |
13914 | pending, don't do anything. This optimizes the common case where | |
13915 | all locations are in the same shared library, that was unloaded. | |
13916 | We'd like to retain the location, so that when the library is | |
13917 | loaded again, we don't loose the enabled/disabled status of the | |
13918 | individual locations. */ | |
0d381245 | 13919 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) |
fe3f5fa8 VP |
13920 | return; |
13921 | ||
fe3f5fa8 VP |
13922 | b->loc = NULL; |
13923 | ||
0d381245 | 13924 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 13925 | { |
f8eba3c6 TT |
13926 | struct bp_location *new_loc; |
13927 | ||
13928 | switch_to_program_space_and_thread (sals.sals[i].pspace); | |
13929 | ||
13930 | new_loc = add_location_to_breakpoint (b, &(sals.sals[i])); | |
fe3f5fa8 | 13931 | |
0d381245 VP |
13932 | /* Reparse conditions, they might contain references to the |
13933 | old symtab. */ | |
13934 | if (b->cond_string != NULL) | |
13935 | { | |
f1310107 | 13936 | char *s; |
bfd189b1 | 13937 | volatile struct gdb_exception e; |
fe3f5fa8 | 13938 | |
0d381245 VP |
13939 | s = b->cond_string; |
13940 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
13941 | { | |
1bb9788d TT |
13942 | new_loc->cond = parse_exp_1 (&s, sals.sals[i].pc, |
13943 | block_for_pc (sals.sals[i].pc), | |
0d381245 VP |
13944 | 0); |
13945 | } | |
13946 | if (e.reason < 0) | |
13947 | { | |
3e43a32a MS |
13948 | warning (_("failed to reevaluate condition " |
13949 | "for breakpoint %d: %s"), | |
0d381245 VP |
13950 | b->number, e.message); |
13951 | new_loc->enabled = 0; | |
13952 | } | |
13953 | } | |
fe3f5fa8 | 13954 | |
f1310107 TJB |
13955 | if (sals_end.nelts) |
13956 | { | |
13957 | CORE_ADDR end = find_breakpoint_range_end (sals_end.sals[0]); | |
13958 | ||
13959 | new_loc->length = end - sals.sals[0].pc + 1; | |
13960 | } | |
0d381245 | 13961 | } |
fe3f5fa8 | 13962 | |
514f746b AR |
13963 | /* Update locations of permanent breakpoints. */ |
13964 | if (b->enable_state == bp_permanent) | |
13965 | make_breakpoint_permanent (b); | |
13966 | ||
4a64f543 MS |
13967 | /* If possible, carry over 'disable' status from existing |
13968 | breakpoints. */ | |
0d381245 VP |
13969 | { |
13970 | struct bp_location *e = existing_locations; | |
776592bf DE |
13971 | /* If there are multiple breakpoints with the same function name, |
13972 | e.g. for inline functions, comparing function names won't work. | |
13973 | Instead compare pc addresses; this is just a heuristic as things | |
13974 | may have moved, but in practice it gives the correct answer | |
13975 | often enough until a better solution is found. */ | |
13976 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
13977 | ||
0d381245 VP |
13978 | for (; e; e = e->next) |
13979 | { | |
13980 | if (!e->enabled && e->function_name) | |
13981 | { | |
13982 | struct bp_location *l = b->loc; | |
776592bf DE |
13983 | if (have_ambiguous_names) |
13984 | { | |
13985 | for (; l; l = l->next) | |
f1310107 | 13986 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
13987 | { |
13988 | l->enabled = 0; | |
13989 | break; | |
13990 | } | |
13991 | } | |
13992 | else | |
13993 | { | |
13994 | for (; l; l = l->next) | |
13995 | if (l->function_name | |
13996 | && strcmp (e->function_name, l->function_name) == 0) | |
13997 | { | |
13998 | l->enabled = 0; | |
13999 | break; | |
14000 | } | |
14001 | } | |
0d381245 VP |
14002 | } |
14003 | } | |
14004 | } | |
fe3f5fa8 | 14005 | |
8d3788bd VP |
14006 | if (!locations_are_equal (existing_locations, b->loc)) |
14007 | observer_notify_breakpoint_modified (b); | |
14008 | ||
b60e7edf | 14009 | update_global_location_list (1); |
fe3f5fa8 VP |
14010 | } |
14011 | ||
ef23e705 TJB |
14012 | /* Find the SaL locations corresponding to the given ADDR_STRING. |
14013 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ | |
14014 | ||
14015 | static struct symtabs_and_lines | |
14016 | addr_string_to_sals (struct breakpoint *b, char *addr_string, int *found) | |
14017 | { | |
14018 | char *s; | |
02d20e4a | 14019 | struct symtabs_and_lines sals = {0}; |
f8eba3c6 | 14020 | volatile struct gdb_exception e; |
ef23e705 | 14021 | |
983af33b | 14022 | gdb_assert (b->ops != NULL); |
ef23e705 | 14023 | s = addr_string; |
ef23e705 TJB |
14024 | |
14025 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
14026 | { | |
983af33b | 14027 | b->ops->decode_linespec (b, &s, &sals); |
ef23e705 TJB |
14028 | } |
14029 | if (e.reason < 0) | |
14030 | { | |
14031 | int not_found_and_ok = 0; | |
14032 | /* For pending breakpoints, it's expected that parsing will | |
14033 | fail until the right shared library is loaded. User has | |
14034 | already told to create pending breakpoints and don't need | |
14035 | extra messages. If breakpoint is in bp_shlib_disabled | |
14036 | state, then user already saw the message about that | |
14037 | breakpoint being disabled, and don't want to see more | |
14038 | errors. */ | |
58438ac1 | 14039 | if (e.error == NOT_FOUND_ERROR |
ef23e705 TJB |
14040 | && (b->condition_not_parsed |
14041 | || (b->loc && b->loc->shlib_disabled) | |
f8eba3c6 | 14042 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
14043 | || b->enable_state == bp_disabled)) |
14044 | not_found_and_ok = 1; | |
14045 | ||
14046 | if (!not_found_and_ok) | |
14047 | { | |
14048 | /* We surely don't want to warn about the same breakpoint | |
14049 | 10 times. One solution, implemented here, is disable | |
14050 | the breakpoint on error. Another solution would be to | |
14051 | have separate 'warning emitted' flag. Since this | |
14052 | happens only when a binary has changed, I don't know | |
14053 | which approach is better. */ | |
14054 | b->enable_state = bp_disabled; | |
14055 | throw_exception (e); | |
14056 | } | |
14057 | } | |
14058 | ||
58438ac1 | 14059 | if (e.reason == 0 || e.error != NOT_FOUND_ERROR) |
ef23e705 | 14060 | { |
f8eba3c6 | 14061 | int i; |
ef23e705 | 14062 | |
f8eba3c6 TT |
14063 | for (i = 0; i < sals.nelts; ++i) |
14064 | resolve_sal_pc (&sals.sals[i]); | |
ef23e705 TJB |
14065 | if (b->condition_not_parsed && s && s[0]) |
14066 | { | |
ed1d1739 KS |
14067 | char *cond_string, *extra_string; |
14068 | int thread, task; | |
ef23e705 TJB |
14069 | |
14070 | find_condition_and_thread (s, sals.sals[0].pc, | |
e7e0cddf SS |
14071 | &cond_string, &thread, &task, |
14072 | &extra_string); | |
ef23e705 TJB |
14073 | if (cond_string) |
14074 | b->cond_string = cond_string; | |
14075 | b->thread = thread; | |
14076 | b->task = task; | |
e7e0cddf SS |
14077 | if (extra_string) |
14078 | b->extra_string = extra_string; | |
ef23e705 TJB |
14079 | b->condition_not_parsed = 0; |
14080 | } | |
14081 | ||
983af33b | 14082 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
ef23e705 | 14083 | sals.sals[0] = update_static_tracepoint (b, sals.sals[0]); |
ef23e705 | 14084 | |
58438ac1 TT |
14085 | *found = 1; |
14086 | } | |
14087 | else | |
14088 | *found = 0; | |
ef23e705 TJB |
14089 | |
14090 | return sals; | |
14091 | } | |
14092 | ||
348d480f PA |
14093 | /* The default re_set method, for typical hardware or software |
14094 | breakpoints. Reevaluate the breakpoint and recreate its | |
14095 | locations. */ | |
14096 | ||
14097 | static void | |
28010a5d | 14098 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 TJB |
14099 | { |
14100 | int found; | |
f1310107 | 14101 | struct symtabs_and_lines sals, sals_end; |
ef23e705 | 14102 | struct symtabs_and_lines expanded = {0}; |
f1310107 | 14103 | struct symtabs_and_lines expanded_end = {0}; |
ef23e705 TJB |
14104 | |
14105 | sals = addr_string_to_sals (b, b->addr_string, &found); | |
14106 | if (found) | |
14107 | { | |
14108 | make_cleanup (xfree, sals.sals); | |
f8eba3c6 | 14109 | expanded = sals; |
ef23e705 TJB |
14110 | } |
14111 | ||
f1310107 TJB |
14112 | if (b->addr_string_range_end) |
14113 | { | |
14114 | sals_end = addr_string_to_sals (b, b->addr_string_range_end, &found); | |
14115 | if (found) | |
14116 | { | |
14117 | make_cleanup (xfree, sals_end.sals); | |
f8eba3c6 | 14118 | expanded_end = sals_end; |
f1310107 TJB |
14119 | } |
14120 | } | |
14121 | ||
14122 | update_breakpoint_locations (b, expanded, expanded_end); | |
28010a5d PA |
14123 | } |
14124 | ||
983af33b SDJ |
14125 | /* Default method for creating SALs from an address string. It basically |
14126 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
14127 | ||
14128 | static void | |
14129 | create_sals_from_address_default (char **arg, | |
14130 | struct linespec_result *canonical, | |
14131 | enum bptype type_wanted, | |
14132 | char *addr_start, char **copy_arg) | |
14133 | { | |
14134 | parse_breakpoint_sals (arg, canonical); | |
14135 | } | |
14136 | ||
14137 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
14138 | function for the `create_breakpoints_sal' method of | |
14139 | breakpoint_ops. */ | |
14140 | ||
14141 | static void | |
14142 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
14143 | struct linespec_result *canonical, | |
14144 | struct linespec_sals *lsal, | |
14145 | char *cond_string, | |
e7e0cddf | 14146 | char *extra_string, |
983af33b SDJ |
14147 | enum bptype type_wanted, |
14148 | enum bpdisp disposition, | |
14149 | int thread, | |
14150 | int task, int ignore_count, | |
14151 | const struct breakpoint_ops *ops, | |
14152 | int from_tty, int enabled, | |
44f238bb | 14153 | int internal, unsigned flags) |
983af33b SDJ |
14154 | { |
14155 | create_breakpoints_sal (gdbarch, canonical, cond_string, | |
e7e0cddf | 14156 | extra_string, |
983af33b SDJ |
14157 | type_wanted, disposition, |
14158 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 14159 | enabled, internal, flags); |
983af33b SDJ |
14160 | } |
14161 | ||
14162 | /* Decode the line represented by S by calling decode_line_full. This is the | |
14163 | default function for the `decode_linespec' method of breakpoint_ops. */ | |
14164 | ||
14165 | static void | |
14166 | decode_linespec_default (struct breakpoint *b, char **s, | |
14167 | struct symtabs_and_lines *sals) | |
14168 | { | |
14169 | struct linespec_result canonical; | |
14170 | ||
14171 | init_linespec_result (&canonical); | |
14172 | decode_line_full (s, DECODE_LINE_FUNFIRSTLINE, | |
14173 | (struct symtab *) NULL, 0, | |
14174 | &canonical, multiple_symbols_all, | |
14175 | b->filter); | |
14176 | ||
14177 | /* We should get 0 or 1 resulting SALs. */ | |
14178 | gdb_assert (VEC_length (linespec_sals, canonical.sals) < 2); | |
14179 | ||
14180 | if (VEC_length (linespec_sals, canonical.sals) > 0) | |
14181 | { | |
14182 | struct linespec_sals *lsal; | |
14183 | ||
14184 | lsal = VEC_index (linespec_sals, canonical.sals, 0); | |
14185 | *sals = lsal->sals; | |
14186 | /* Arrange it so the destructor does not free the | |
14187 | contents. */ | |
14188 | lsal->sals.sals = NULL; | |
14189 | } | |
14190 | ||
14191 | destroy_linespec_result (&canonical); | |
14192 | } | |
14193 | ||
28010a5d PA |
14194 | /* Prepare the global context for a re-set of breakpoint B. */ |
14195 | ||
14196 | static struct cleanup * | |
14197 | prepare_re_set_context (struct breakpoint *b) | |
14198 | { | |
14199 | struct cleanup *cleanups; | |
14200 | ||
14201 | input_radix = b->input_radix; | |
14202 | cleanups = save_current_space_and_thread (); | |
f8eba3c6 TT |
14203 | if (b->pspace != NULL) |
14204 | switch_to_program_space_and_thread (b->pspace); | |
28010a5d PA |
14205 | set_language (b->language); |
14206 | ||
14207 | return cleanups; | |
ef23e705 TJB |
14208 | } |
14209 | ||
c906108c SS |
14210 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
14211 | The value we return ends up being the return value from catch_errors. | |
14212 | Unused in this case. */ | |
14213 | ||
14214 | static int | |
4efb68b1 | 14215 | breakpoint_re_set_one (void *bint) |
c906108c | 14216 | { |
4a64f543 | 14217 | /* Get past catch_errs. */ |
53a5351d | 14218 | struct breakpoint *b = (struct breakpoint *) bint; |
348d480f | 14219 | struct cleanup *cleanups; |
c906108c | 14220 | |
348d480f PA |
14221 | cleanups = prepare_re_set_context (b); |
14222 | b->ops->re_set (b); | |
14223 | do_cleanups (cleanups); | |
c906108c SS |
14224 | return 0; |
14225 | } | |
14226 | ||
69de3c6a | 14227 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 14228 | void |
69de3c6a | 14229 | breakpoint_re_set (void) |
c906108c | 14230 | { |
35df4500 | 14231 | struct breakpoint *b, *b_tmp; |
c906108c SS |
14232 | enum language save_language; |
14233 | int save_input_radix; | |
6c95b8df | 14234 | struct cleanup *old_chain; |
c5aa993b | 14235 | |
c906108c SS |
14236 | save_language = current_language->la_language; |
14237 | save_input_radix = input_radix; | |
6c95b8df PA |
14238 | old_chain = save_current_program_space (); |
14239 | ||
35df4500 | 14240 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 14241 | { |
4a64f543 | 14242 | /* Format possible error msg. */ |
fe3f5fa8 | 14243 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
14244 | b->number); |
14245 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 14246 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 14247 | do_cleanups (cleanups); |
c5aa993b | 14248 | } |
c906108c SS |
14249 | set_language (save_language); |
14250 | input_radix = save_input_radix; | |
e62c965a | 14251 | |
0756c555 | 14252 | jit_breakpoint_re_set (); |
4efc6507 | 14253 | |
6c95b8df PA |
14254 | do_cleanups (old_chain); |
14255 | ||
af02033e PP |
14256 | create_overlay_event_breakpoint (); |
14257 | create_longjmp_master_breakpoint (); | |
14258 | create_std_terminate_master_breakpoint (); | |
186c406b | 14259 | create_exception_master_breakpoint (); |
1bfeeb0f JL |
14260 | |
14261 | /* While we're at it, reset the skip list too. */ | |
14262 | skip_re_set (); | |
c906108c SS |
14263 | } |
14264 | \f | |
c906108c SS |
14265 | /* Reset the thread number of this breakpoint: |
14266 | ||
14267 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 14268 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 14269 | void |
fba45db2 | 14270 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
14271 | { |
14272 | if (b->thread != -1) | |
14273 | { | |
39f77062 KB |
14274 | if (in_thread_list (inferior_ptid)) |
14275 | b->thread = pid_to_thread_id (inferior_ptid); | |
6c95b8df PA |
14276 | |
14277 | /* We're being called after following a fork. The new fork is | |
14278 | selected as current, and unless this was a vfork will have a | |
14279 | different program space from the original thread. Reset that | |
14280 | as well. */ | |
14281 | b->loc->pspace = current_program_space; | |
c906108c SS |
14282 | } |
14283 | } | |
14284 | ||
03ac34d5 MS |
14285 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14286 | If from_tty is nonzero, it prints a message to that effect, | |
14287 | which ends with a period (no newline). */ | |
14288 | ||
c906108c | 14289 | void |
fba45db2 | 14290 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 14291 | { |
52f0bd74 | 14292 | struct breakpoint *b; |
c906108c SS |
14293 | |
14294 | if (count < 0) | |
14295 | count = 0; | |
14296 | ||
14297 | ALL_BREAKPOINTS (b) | |
14298 | if (b->number == bptnum) | |
c5aa993b | 14299 | { |
d77f58be SS |
14300 | if (is_tracepoint (b)) |
14301 | { | |
14302 | if (from_tty && count != 0) | |
14303 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
14304 | bptnum); | |
14305 | return; | |
14306 | } | |
14307 | ||
c5aa993b | 14308 | b->ignore_count = count; |
221ea385 KS |
14309 | if (from_tty) |
14310 | { | |
14311 | if (count == 0) | |
3e43a32a MS |
14312 | printf_filtered (_("Will stop next time " |
14313 | "breakpoint %d is reached."), | |
221ea385 KS |
14314 | bptnum); |
14315 | else if (count == 1) | |
a3f17187 | 14316 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
14317 | bptnum); |
14318 | else | |
3e43a32a MS |
14319 | printf_filtered (_("Will ignore next %d " |
14320 | "crossings of breakpoint %d."), | |
221ea385 KS |
14321 | count, bptnum); |
14322 | } | |
ef37bb07 | 14323 | annotate_breakpoints_changed (); |
8d3788bd | 14324 | observer_notify_breakpoint_modified (b); |
c5aa993b JM |
14325 | return; |
14326 | } | |
c906108c | 14327 | |
8a3fe4f8 | 14328 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
14329 | } |
14330 | ||
c906108c SS |
14331 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
14332 | ||
14333 | static void | |
fba45db2 | 14334 | ignore_command (char *args, int from_tty) |
c906108c SS |
14335 | { |
14336 | char *p = args; | |
52f0bd74 | 14337 | int num; |
c906108c SS |
14338 | |
14339 | if (p == 0) | |
e2e0b3e5 | 14340 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 14341 | |
c906108c | 14342 | num = get_number (&p); |
5c44784c | 14343 | if (num == 0) |
8a3fe4f8 | 14344 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 14345 | if (*p == 0) |
8a3fe4f8 | 14346 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
14347 | |
14348 | set_ignore_count (num, | |
14349 | longest_to_int (value_as_long (parse_and_eval (p))), | |
14350 | from_tty); | |
221ea385 KS |
14351 | if (from_tty) |
14352 | printf_filtered ("\n"); | |
c906108c SS |
14353 | } |
14354 | \f | |
14355 | /* Call FUNCTION on each of the breakpoints | |
14356 | whose numbers are given in ARGS. */ | |
14357 | ||
14358 | static void | |
95a42b64 TT |
14359 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *, |
14360 | void *), | |
14361 | void *data) | |
c906108c | 14362 | { |
52f0bd74 AC |
14363 | int num; |
14364 | struct breakpoint *b, *tmp; | |
11cf8741 | 14365 | int match; |
197f0a60 | 14366 | struct get_number_or_range_state state; |
c906108c | 14367 | |
197f0a60 | 14368 | if (args == 0) |
e2e0b3e5 | 14369 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c | 14370 | |
197f0a60 TT |
14371 | init_number_or_range (&state, args); |
14372 | ||
14373 | while (!state.finished) | |
c906108c | 14374 | { |
197f0a60 TT |
14375 | char *p = state.string; |
14376 | ||
11cf8741 | 14377 | match = 0; |
c5aa993b | 14378 | |
197f0a60 | 14379 | num = get_number_or_range (&state); |
5c44784c | 14380 | if (num == 0) |
c5aa993b | 14381 | { |
8a3fe4f8 | 14382 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
14383 | } |
14384 | else | |
14385 | { | |
14386 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
14387 | if (b->number == num) | |
14388 | { | |
11cf8741 | 14389 | match = 1; |
cdac0397 | 14390 | function (b, data); |
11cf8741 | 14391 | break; |
5c44784c | 14392 | } |
11cf8741 | 14393 | if (match == 0) |
a3f17187 | 14394 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 14395 | } |
c906108c SS |
14396 | } |
14397 | } | |
14398 | ||
0d381245 VP |
14399 | static struct bp_location * |
14400 | find_location_by_number (char *number) | |
14401 | { | |
14402 | char *dot = strchr (number, '.'); | |
14403 | char *p1; | |
14404 | int bp_num; | |
14405 | int loc_num; | |
14406 | struct breakpoint *b; | |
14407 | struct bp_location *loc; | |
14408 | ||
14409 | *dot = '\0'; | |
14410 | ||
14411 | p1 = number; | |
197f0a60 | 14412 | bp_num = get_number (&p1); |
0d381245 VP |
14413 | if (bp_num == 0) |
14414 | error (_("Bad breakpoint number '%s'"), number); | |
14415 | ||
14416 | ALL_BREAKPOINTS (b) | |
14417 | if (b->number == bp_num) | |
14418 | { | |
14419 | break; | |
14420 | } | |
14421 | ||
14422 | if (!b || b->number != bp_num) | |
14423 | error (_("Bad breakpoint number '%s'"), number); | |
14424 | ||
14425 | p1 = dot+1; | |
197f0a60 | 14426 | loc_num = get_number (&p1); |
0d381245 VP |
14427 | if (loc_num == 0) |
14428 | error (_("Bad breakpoint location number '%s'"), number); | |
14429 | ||
14430 | --loc_num; | |
14431 | loc = b->loc; | |
14432 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
14433 | ; | |
14434 | if (!loc) | |
14435 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
14436 | ||
14437 | return loc; | |
14438 | } | |
14439 | ||
14440 | ||
1900040c MS |
14441 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14442 | If from_tty is nonzero, it prints a message to that effect, | |
14443 | which ends with a period (no newline). */ | |
14444 | ||
c906108c | 14445 | void |
fba45db2 | 14446 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14447 | { |
14448 | /* Never disable a watchpoint scope breakpoint; we want to | |
14449 | hit them when we leave scope so we can delete both the | |
14450 | watchpoint and its scope breakpoint at that time. */ | |
14451 | if (bpt->type == bp_watchpoint_scope) | |
14452 | return; | |
14453 | ||
c2c6d25f | 14454 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 14455 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
14456 | return; |
14457 | ||
b5de0fa7 | 14458 | bpt->enable_state = bp_disabled; |
c906108c | 14459 | |
b775012e LM |
14460 | /* Mark breakpoint locations modified. */ |
14461 | mark_breakpoint_modified (bpt); | |
14462 | ||
d248b706 KY |
14463 | if (target_supports_enable_disable_tracepoint () |
14464 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14465 | { | |
14466 | struct bp_location *location; | |
14467 | ||
14468 | for (location = bpt->loc; location; location = location->next) | |
14469 | target_disable_tracepoint (location); | |
14470 | } | |
14471 | ||
b60e7edf | 14472 | update_global_location_list (0); |
c906108c | 14473 | |
8d3788bd | 14474 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14475 | } |
14476 | ||
51be5b68 PA |
14477 | /* A callback for iterate_over_related_breakpoints. */ |
14478 | ||
14479 | static void | |
14480 | do_disable_breakpoint (struct breakpoint *b, void *ignore) | |
14481 | { | |
14482 | disable_breakpoint (b); | |
14483 | } | |
14484 | ||
95a42b64 TT |
14485 | /* A callback for map_breakpoint_numbers that calls |
14486 | disable_breakpoint. */ | |
14487 | ||
14488 | static void | |
14489 | do_map_disable_breakpoint (struct breakpoint *b, void *ignore) | |
14490 | { | |
51be5b68 | 14491 | iterate_over_related_breakpoints (b, do_disable_breakpoint, NULL); |
95a42b64 TT |
14492 | } |
14493 | ||
c906108c | 14494 | static void |
fba45db2 | 14495 | disable_command (char *args, int from_tty) |
c906108c | 14496 | { |
c906108c | 14497 | if (args == 0) |
46c6471b PA |
14498 | { |
14499 | struct breakpoint *bpt; | |
14500 | ||
14501 | ALL_BREAKPOINTS (bpt) | |
14502 | if (user_breakpoint_p (bpt)) | |
14503 | disable_breakpoint (bpt); | |
14504 | } | |
0d381245 VP |
14505 | else if (strchr (args, '.')) |
14506 | { | |
14507 | struct bp_location *loc = find_location_by_number (args); | |
14508 | if (loc) | |
d248b706 | 14509 | { |
b775012e LM |
14510 | if (loc->enabled) |
14511 | { | |
14512 | loc->enabled = 0; | |
14513 | mark_breakpoint_location_modified (loc); | |
14514 | } | |
d248b706 KY |
14515 | if (target_supports_enable_disable_tracepoint () |
14516 | && current_trace_status ()->running && loc->owner | |
14517 | && is_tracepoint (loc->owner)) | |
14518 | target_disable_tracepoint (loc); | |
14519 | } | |
b60e7edf | 14520 | update_global_location_list (0); |
0d381245 | 14521 | } |
c906108c | 14522 | else |
95a42b64 | 14523 | map_breakpoint_numbers (args, do_map_disable_breakpoint, NULL); |
c906108c SS |
14524 | } |
14525 | ||
14526 | static void | |
816338b5 SS |
14527 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14528 | int count) | |
c906108c | 14529 | { |
afe38095 | 14530 | int target_resources_ok; |
c906108c SS |
14531 | |
14532 | if (bpt->type == bp_hardware_breakpoint) | |
14533 | { | |
14534 | int i; | |
c5aa993b | 14535 | i = hw_breakpoint_used_count (); |
53a5351d | 14536 | target_resources_ok = |
d92524f1 | 14537 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14538 | i + 1, 0); |
c906108c | 14539 | if (target_resources_ok == 0) |
8a3fe4f8 | 14540 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14541 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14542 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14543 | } |
14544 | ||
cc60f2e3 | 14545 | if (is_watchpoint (bpt)) |
c906108c | 14546 | { |
d07205c2 JK |
14547 | /* Initialize it just to avoid a GCC false warning. */ |
14548 | enum enable_state orig_enable_state = 0; | |
bfd189b1 | 14549 | volatile struct gdb_exception e; |
dde02812 ES |
14550 | |
14551 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 14552 | { |
3a5c3e22 PA |
14553 | struct watchpoint *w = (struct watchpoint *) bpt; |
14554 | ||
1e718ff1 TJB |
14555 | orig_enable_state = bpt->enable_state; |
14556 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14557 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14558 | } |
dde02812 | 14559 | if (e.reason < 0) |
c5aa993b | 14560 | { |
1e718ff1 | 14561 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14562 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14563 | bpt->number); | |
14564 | return; | |
c5aa993b | 14565 | } |
c906108c | 14566 | } |
0101ce28 | 14567 | |
b4c291bb KH |
14568 | if (bpt->enable_state != bp_permanent) |
14569 | bpt->enable_state = bp_enabled; | |
d248b706 | 14570 | |
b775012e LM |
14571 | bpt->enable_state = bp_enabled; |
14572 | ||
14573 | /* Mark breakpoint locations modified. */ | |
14574 | mark_breakpoint_modified (bpt); | |
14575 | ||
d248b706 KY |
14576 | if (target_supports_enable_disable_tracepoint () |
14577 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14578 | { | |
14579 | struct bp_location *location; | |
14580 | ||
14581 | for (location = bpt->loc; location; location = location->next) | |
14582 | target_enable_tracepoint (location); | |
14583 | } | |
14584 | ||
b4c291bb | 14585 | bpt->disposition = disposition; |
816338b5 | 14586 | bpt->enable_count = count; |
b60e7edf | 14587 | update_global_location_list (1); |
ef37bb07 | 14588 | annotate_breakpoints_changed (); |
b4c291bb | 14589 | |
8d3788bd | 14590 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14591 | } |
14592 | ||
fe3f5fa8 | 14593 | |
c906108c | 14594 | void |
fba45db2 | 14595 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14596 | { |
816338b5 | 14597 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14598 | } |
14599 | ||
14600 | static void | |
14601 | do_enable_breakpoint (struct breakpoint *bpt, void *arg) | |
14602 | { | |
14603 | enable_breakpoint (bpt); | |
c906108c SS |
14604 | } |
14605 | ||
95a42b64 TT |
14606 | /* A callback for map_breakpoint_numbers that calls |
14607 | enable_breakpoint. */ | |
14608 | ||
14609 | static void | |
14610 | do_map_enable_breakpoint (struct breakpoint *b, void *ignore) | |
14611 | { | |
51be5b68 | 14612 | iterate_over_related_breakpoints (b, do_enable_breakpoint, NULL); |
95a42b64 TT |
14613 | } |
14614 | ||
c906108c SS |
14615 | /* The enable command enables the specified breakpoints (or all defined |
14616 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 14617 | in stopping the inferior. */ |
c906108c | 14618 | |
c906108c | 14619 | static void |
fba45db2 | 14620 | enable_command (char *args, int from_tty) |
c906108c | 14621 | { |
c906108c | 14622 | if (args == 0) |
46c6471b PA |
14623 | { |
14624 | struct breakpoint *bpt; | |
14625 | ||
14626 | ALL_BREAKPOINTS (bpt) | |
14627 | if (user_breakpoint_p (bpt)) | |
14628 | enable_breakpoint (bpt); | |
14629 | } | |
0d381245 VP |
14630 | else if (strchr (args, '.')) |
14631 | { | |
14632 | struct bp_location *loc = find_location_by_number (args); | |
14633 | if (loc) | |
d248b706 | 14634 | { |
b775012e LM |
14635 | if (!loc->enabled) |
14636 | { | |
14637 | loc->enabled = 1; | |
14638 | mark_breakpoint_location_modified (loc); | |
14639 | } | |
d248b706 KY |
14640 | if (target_supports_enable_disable_tracepoint () |
14641 | && current_trace_status ()->running && loc->owner | |
14642 | && is_tracepoint (loc->owner)) | |
14643 | target_enable_tracepoint (loc); | |
14644 | } | |
b60e7edf | 14645 | update_global_location_list (1); |
0d381245 | 14646 | } |
c906108c | 14647 | else |
95a42b64 | 14648 | map_breakpoint_numbers (args, do_map_enable_breakpoint, NULL); |
c906108c SS |
14649 | } |
14650 | ||
816338b5 SS |
14651 | /* This struct packages up disposition data for application to multiple |
14652 | breakpoints. */ | |
14653 | ||
14654 | struct disp_data | |
14655 | { | |
14656 | enum bpdisp disp; | |
14657 | int count; | |
14658 | }; | |
14659 | ||
c906108c | 14660 | static void |
51be5b68 PA |
14661 | do_enable_breakpoint_disp (struct breakpoint *bpt, void *arg) |
14662 | { | |
816338b5 | 14663 | struct disp_data disp_data = *(struct disp_data *) arg; |
51be5b68 | 14664 | |
816338b5 | 14665 | enable_breakpoint_disp (bpt, disp_data.disp, disp_data.count); |
51be5b68 PA |
14666 | } |
14667 | ||
14668 | static void | |
14669 | do_map_enable_once_breakpoint (struct breakpoint *bpt, void *ignore) | |
c906108c | 14670 | { |
816338b5 | 14671 | struct disp_data disp = { disp_disable, 1 }; |
51be5b68 PA |
14672 | |
14673 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
14674 | } |
14675 | ||
c906108c | 14676 | static void |
fba45db2 | 14677 | enable_once_command (char *args, int from_tty) |
c906108c | 14678 | { |
51be5b68 | 14679 | map_breakpoint_numbers (args, do_map_enable_once_breakpoint, NULL); |
c906108c SS |
14680 | } |
14681 | ||
816338b5 SS |
14682 | static void |
14683 | do_map_enable_count_breakpoint (struct breakpoint *bpt, void *countptr) | |
14684 | { | |
14685 | struct disp_data disp = { disp_disable, *(int *) countptr }; | |
14686 | ||
14687 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
14688 | } | |
14689 | ||
14690 | static void | |
14691 | enable_count_command (char *args, int from_tty) | |
14692 | { | |
14693 | int count = get_number (&args); | |
14694 | ||
14695 | map_breakpoint_numbers (args, do_map_enable_count_breakpoint, &count); | |
14696 | } | |
14697 | ||
c906108c | 14698 | static void |
51be5b68 | 14699 | do_map_enable_delete_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 14700 | { |
816338b5 | 14701 | struct disp_data disp = { disp_del, 1 }; |
51be5b68 PA |
14702 | |
14703 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
14704 | } |
14705 | ||
c906108c | 14706 | static void |
fba45db2 | 14707 | enable_delete_command (char *args, int from_tty) |
c906108c | 14708 | { |
51be5b68 | 14709 | map_breakpoint_numbers (args, do_map_enable_delete_breakpoint, NULL); |
c906108c SS |
14710 | } |
14711 | \f | |
fa8d40ab JJ |
14712 | static void |
14713 | set_breakpoint_cmd (char *args, int from_tty) | |
14714 | { | |
14715 | } | |
14716 | ||
14717 | static void | |
14718 | show_breakpoint_cmd (char *args, int from_tty) | |
14719 | { | |
14720 | } | |
14721 | ||
1f3b5d1b PP |
14722 | /* Invalidate last known value of any hardware watchpoint if |
14723 | the memory which that value represents has been written to by | |
14724 | GDB itself. */ | |
14725 | ||
14726 | static void | |
8de0566d YQ |
14727 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
14728 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
14729 | const bfd_byte *data) |
14730 | { | |
14731 | struct breakpoint *bp; | |
14732 | ||
14733 | ALL_BREAKPOINTS (bp) | |
14734 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 14735 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14736 | { |
3a5c3e22 | 14737 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14738 | |
3a5c3e22 PA |
14739 | if (wp->val_valid && wp->val) |
14740 | { | |
14741 | struct bp_location *loc; | |
14742 | ||
14743 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
14744 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
14745 | && loc->address + loc->length > addr | |
14746 | && addr + len > loc->address) | |
14747 | { | |
14748 | value_free (wp->val); | |
14749 | wp->val = NULL; | |
14750 | wp->val_valid = 0; | |
14751 | } | |
14752 | } | |
1f3b5d1b PP |
14753 | } |
14754 | } | |
14755 | ||
8181d85f DJ |
14756 | /* Create and insert a raw software breakpoint at PC. Return an |
14757 | identifier, which should be used to remove the breakpoint later. | |
14758 | In general, places which call this should be using something on the | |
14759 | breakpoint chain instead; this function should be eliminated | |
14760 | someday. */ | |
14761 | ||
14762 | void * | |
6c95b8df PA |
14763 | deprecated_insert_raw_breakpoint (struct gdbarch *gdbarch, |
14764 | struct address_space *aspace, CORE_ADDR pc) | |
8181d85f DJ |
14765 | { |
14766 | struct bp_target_info *bp_tgt; | |
14767 | ||
6c95b8df | 14768 | bp_tgt = XZALLOC (struct bp_target_info); |
8181d85f | 14769 | |
6c95b8df | 14770 | bp_tgt->placed_address_space = aspace; |
8181d85f | 14771 | bp_tgt->placed_address = pc; |
6c95b8df | 14772 | |
a6d9a66e | 14773 | if (target_insert_breakpoint (gdbarch, bp_tgt) != 0) |
8181d85f DJ |
14774 | { |
14775 | /* Could not insert the breakpoint. */ | |
14776 | xfree (bp_tgt); | |
14777 | return NULL; | |
14778 | } | |
14779 | ||
14780 | return bp_tgt; | |
14781 | } | |
14782 | ||
4a64f543 MS |
14783 | /* Remove a breakpoint BP inserted by |
14784 | deprecated_insert_raw_breakpoint. */ | |
8181d85f DJ |
14785 | |
14786 | int | |
a6d9a66e | 14787 | deprecated_remove_raw_breakpoint (struct gdbarch *gdbarch, void *bp) |
8181d85f DJ |
14788 | { |
14789 | struct bp_target_info *bp_tgt = bp; | |
14790 | int ret; | |
14791 | ||
a6d9a66e | 14792 | ret = target_remove_breakpoint (gdbarch, bp_tgt); |
8181d85f DJ |
14793 | xfree (bp_tgt); |
14794 | ||
14795 | return ret; | |
14796 | } | |
14797 | ||
4a64f543 MS |
14798 | /* One (or perhaps two) breakpoints used for software single |
14799 | stepping. */ | |
8181d85f DJ |
14800 | |
14801 | static void *single_step_breakpoints[2]; | |
a6d9a66e | 14802 | static struct gdbarch *single_step_gdbarch[2]; |
8181d85f DJ |
14803 | |
14804 | /* Create and insert a breakpoint for software single step. */ | |
14805 | ||
14806 | void | |
6c95b8df | 14807 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
4a64f543 MS |
14808 | struct address_space *aspace, |
14809 | CORE_ADDR next_pc) | |
8181d85f DJ |
14810 | { |
14811 | void **bpt_p; | |
14812 | ||
14813 | if (single_step_breakpoints[0] == NULL) | |
a6d9a66e UW |
14814 | { |
14815 | bpt_p = &single_step_breakpoints[0]; | |
14816 | single_step_gdbarch[0] = gdbarch; | |
14817 | } | |
8181d85f DJ |
14818 | else |
14819 | { | |
14820 | gdb_assert (single_step_breakpoints[1] == NULL); | |
14821 | bpt_p = &single_step_breakpoints[1]; | |
a6d9a66e | 14822 | single_step_gdbarch[1] = gdbarch; |
8181d85f DJ |
14823 | } |
14824 | ||
4a64f543 MS |
14825 | /* NOTE drow/2006-04-11: A future improvement to this function would |
14826 | be to only create the breakpoints once, and actually put them on | |
14827 | the breakpoint chain. That would let us use set_raw_breakpoint. | |
14828 | We could adjust the addresses each time they were needed. Doing | |
14829 | this requires corresponding changes elsewhere where single step | |
14830 | breakpoints are handled, however. So, for now, we use this. */ | |
8181d85f | 14831 | |
6c95b8df | 14832 | *bpt_p = deprecated_insert_raw_breakpoint (gdbarch, aspace, next_pc); |
8181d85f | 14833 | if (*bpt_p == NULL) |
5af949e3 UW |
14834 | error (_("Could not insert single-step breakpoint at %s"), |
14835 | paddress (gdbarch, next_pc)); | |
8181d85f DJ |
14836 | } |
14837 | ||
f02253f1 HZ |
14838 | /* Check if the breakpoints used for software single stepping |
14839 | were inserted or not. */ | |
14840 | ||
14841 | int | |
14842 | single_step_breakpoints_inserted (void) | |
14843 | { | |
14844 | return (single_step_breakpoints[0] != NULL | |
14845 | || single_step_breakpoints[1] != NULL); | |
14846 | } | |
14847 | ||
8181d85f DJ |
14848 | /* Remove and delete any breakpoints used for software single step. */ |
14849 | ||
14850 | void | |
14851 | remove_single_step_breakpoints (void) | |
14852 | { | |
14853 | gdb_assert (single_step_breakpoints[0] != NULL); | |
14854 | ||
14855 | /* See insert_single_step_breakpoint for more about this deprecated | |
14856 | call. */ | |
a6d9a66e UW |
14857 | deprecated_remove_raw_breakpoint (single_step_gdbarch[0], |
14858 | single_step_breakpoints[0]); | |
14859 | single_step_gdbarch[0] = NULL; | |
8181d85f DJ |
14860 | single_step_breakpoints[0] = NULL; |
14861 | ||
14862 | if (single_step_breakpoints[1] != NULL) | |
14863 | { | |
a6d9a66e UW |
14864 | deprecated_remove_raw_breakpoint (single_step_gdbarch[1], |
14865 | single_step_breakpoints[1]); | |
14866 | single_step_gdbarch[1] = NULL; | |
8181d85f DJ |
14867 | single_step_breakpoints[1] = NULL; |
14868 | } | |
14869 | } | |
14870 | ||
d03285ec UW |
14871 | /* Delete software single step breakpoints without removing them from |
14872 | the inferior. This is intended to be used if the inferior's address | |
14873 | space where they were inserted is already gone, e.g. after exit or | |
14874 | exec. */ | |
14875 | ||
14876 | void | |
14877 | cancel_single_step_breakpoints (void) | |
14878 | { | |
14879 | int i; | |
14880 | ||
14881 | for (i = 0; i < 2; i++) | |
14882 | if (single_step_breakpoints[i]) | |
14883 | { | |
14884 | xfree (single_step_breakpoints[i]); | |
14885 | single_step_breakpoints[i] = NULL; | |
14886 | single_step_gdbarch[i] = NULL; | |
14887 | } | |
14888 | } | |
14889 | ||
14890 | /* Detach software single-step breakpoints from INFERIOR_PTID without | |
14891 | removing them. */ | |
14892 | ||
14893 | static void | |
14894 | detach_single_step_breakpoints (void) | |
14895 | { | |
14896 | int i; | |
14897 | ||
14898 | for (i = 0; i < 2; i++) | |
14899 | if (single_step_breakpoints[i]) | |
14900 | target_remove_breakpoint (single_step_gdbarch[i], | |
14901 | single_step_breakpoints[i]); | |
14902 | } | |
14903 | ||
4a64f543 MS |
14904 | /* Check whether a software single-step breakpoint is inserted at |
14905 | PC. */ | |
1aafd4da UW |
14906 | |
14907 | static int | |
cc59ec59 MS |
14908 | single_step_breakpoint_inserted_here_p (struct address_space *aspace, |
14909 | CORE_ADDR pc) | |
1aafd4da UW |
14910 | { |
14911 | int i; | |
14912 | ||
14913 | for (i = 0; i < 2; i++) | |
14914 | { | |
14915 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
6c95b8df PA |
14916 | if (bp_tgt |
14917 | && breakpoint_address_match (bp_tgt->placed_address_space, | |
14918 | bp_tgt->placed_address, | |
14919 | aspace, pc)) | |
1aafd4da UW |
14920 | return 1; |
14921 | } | |
14922 | ||
14923 | return 0; | |
14924 | } | |
14925 | ||
a96d9b2e SDJ |
14926 | /* Returns 0 if 'bp' is NOT a syscall catchpoint, |
14927 | non-zero otherwise. */ | |
14928 | static int | |
14929 | is_syscall_catchpoint_enabled (struct breakpoint *bp) | |
14930 | { | |
14931 | if (syscall_catchpoint_p (bp) | |
14932 | && bp->enable_state != bp_disabled | |
14933 | && bp->enable_state != bp_call_disabled) | |
14934 | return 1; | |
14935 | else | |
14936 | return 0; | |
14937 | } | |
14938 | ||
14939 | int | |
14940 | catch_syscall_enabled (void) | |
14941 | { | |
fa3064dd YQ |
14942 | struct catch_syscall_inferior_data *inf_data |
14943 | = get_catch_syscall_inferior_data (current_inferior ()); | |
a96d9b2e | 14944 | |
fa3064dd | 14945 | return inf_data->total_syscalls_count != 0; |
a96d9b2e SDJ |
14946 | } |
14947 | ||
14948 | int | |
14949 | catching_syscall_number (int syscall_number) | |
14950 | { | |
14951 | struct breakpoint *bp; | |
14952 | ||
14953 | ALL_BREAKPOINTS (bp) | |
14954 | if (is_syscall_catchpoint_enabled (bp)) | |
14955 | { | |
be5c67c1 PA |
14956 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bp; |
14957 | ||
14958 | if (c->syscalls_to_be_caught) | |
a96d9b2e SDJ |
14959 | { |
14960 | int i, iter; | |
14961 | for (i = 0; | |
be5c67c1 | 14962 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
14963 | i++) |
14964 | if (syscall_number == iter) | |
14965 | return 1; | |
14966 | } | |
14967 | else | |
14968 | return 1; | |
14969 | } | |
14970 | ||
14971 | return 0; | |
14972 | } | |
14973 | ||
14974 | /* Complete syscall names. Used by "catch syscall". */ | |
49c4e619 | 14975 | static VEC (char_ptr) * |
a96d9b2e SDJ |
14976 | catch_syscall_completer (struct cmd_list_element *cmd, |
14977 | char *text, char *word) | |
14978 | { | |
14979 | const char **list = get_syscall_names (); | |
49c4e619 | 14980 | VEC (char_ptr) *retlist |
b45627a0 | 14981 | = (list == NULL) ? NULL : complete_on_enum (list, word, word); |
cc59ec59 | 14982 | |
c38eea1a MS |
14983 | xfree (list); |
14984 | return retlist; | |
a96d9b2e SDJ |
14985 | } |
14986 | ||
1042e4c0 SS |
14987 | /* Tracepoint-specific operations. */ |
14988 | ||
14989 | /* Set tracepoint count to NUM. */ | |
14990 | static void | |
14991 | set_tracepoint_count (int num) | |
14992 | { | |
14993 | tracepoint_count = num; | |
4fa62494 | 14994 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
14995 | } |
14996 | ||
70221824 | 14997 | static void |
1042e4c0 SS |
14998 | trace_command (char *arg, int from_tty) |
14999 | { | |
55aa24fb SDJ |
15000 | struct breakpoint_ops *ops; |
15001 | const char *arg_cp = arg; | |
15002 | ||
15003 | if (arg && probe_linespec_to_ops (&arg_cp)) | |
15004 | ops = &tracepoint_probe_breakpoint_ops; | |
15005 | else | |
15006 | ops = &tracepoint_breakpoint_ops; | |
15007 | ||
558a9d82 YQ |
15008 | create_breakpoint (get_current_arch (), |
15009 | arg, | |
15010 | NULL, 0, NULL, 1 /* parse arg */, | |
15011 | 0 /* tempflag */, | |
15012 | bp_tracepoint /* type_wanted */, | |
15013 | 0 /* Ignore count */, | |
15014 | pending_break_support, | |
15015 | ops, | |
15016 | from_tty, | |
15017 | 1 /* enabled */, | |
15018 | 0 /* internal */, 0); | |
1042e4c0 SS |
15019 | } |
15020 | ||
70221824 | 15021 | static void |
7a697b8d SS |
15022 | ftrace_command (char *arg, int from_tty) |
15023 | { | |
558a9d82 YQ |
15024 | create_breakpoint (get_current_arch (), |
15025 | arg, | |
15026 | NULL, 0, NULL, 1 /* parse arg */, | |
15027 | 0 /* tempflag */, | |
15028 | bp_fast_tracepoint /* type_wanted */, | |
15029 | 0 /* Ignore count */, | |
15030 | pending_break_support, | |
15031 | &tracepoint_breakpoint_ops, | |
15032 | from_tty, | |
15033 | 1 /* enabled */, | |
15034 | 0 /* internal */, 0); | |
0fb4aa4b PA |
15035 | } |
15036 | ||
15037 | /* strace command implementation. Creates a static tracepoint. */ | |
15038 | ||
70221824 | 15039 | static void |
0fb4aa4b PA |
15040 | strace_command (char *arg, int from_tty) |
15041 | { | |
983af33b SDJ |
15042 | struct breakpoint_ops *ops; |
15043 | ||
15044 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
15045 | or with a normal static tracepoint. */ | |
15046 | if (arg && strncmp (arg, "-m", 2) == 0 && isspace (arg[2])) | |
15047 | ops = &strace_marker_breakpoint_ops; | |
15048 | else | |
15049 | ops = &tracepoint_breakpoint_ops; | |
15050 | ||
558a9d82 YQ |
15051 | create_breakpoint (get_current_arch (), |
15052 | arg, | |
15053 | NULL, 0, NULL, 1 /* parse arg */, | |
15054 | 0 /* tempflag */, | |
15055 | bp_static_tracepoint /* type_wanted */, | |
15056 | 0 /* Ignore count */, | |
15057 | pending_break_support, | |
15058 | ops, | |
15059 | from_tty, | |
15060 | 1 /* enabled */, | |
15061 | 0 /* internal */, 0); | |
7a697b8d SS |
15062 | } |
15063 | ||
409873ef SS |
15064 | /* Set up a fake reader function that gets command lines from a linked |
15065 | list that was acquired during tracepoint uploading. */ | |
15066 | ||
15067 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 15068 | static int next_cmd; |
409873ef SS |
15069 | |
15070 | static char * | |
15071 | read_uploaded_action (void) | |
15072 | { | |
15073 | char *rslt; | |
15074 | ||
3149d8c1 | 15075 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 15076 | |
3149d8c1 | 15077 | next_cmd++; |
409873ef SS |
15078 | |
15079 | return rslt; | |
15080 | } | |
15081 | ||
00bf0b85 SS |
15082 | /* Given information about a tracepoint as recorded on a target (which |
15083 | can be either a live system or a trace file), attempt to create an | |
15084 | equivalent GDB tracepoint. This is not a reliable process, since | |
15085 | the target does not necessarily have all the information used when | |
15086 | the tracepoint was originally defined. */ | |
15087 | ||
d9b3f62e | 15088 | struct tracepoint * |
00bf0b85 | 15089 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 15090 | { |
409873ef | 15091 | char *addr_str, small_buf[100]; |
d9b3f62e | 15092 | struct tracepoint *tp; |
fd9b8c24 | 15093 | |
409873ef SS |
15094 | if (utp->at_string) |
15095 | addr_str = utp->at_string; | |
15096 | else | |
15097 | { | |
15098 | /* In the absence of a source location, fall back to raw | |
15099 | address. Since there is no way to confirm that the address | |
15100 | means the same thing as when the trace was started, warn the | |
15101 | user. */ | |
3e43a32a MS |
15102 | warning (_("Uploaded tracepoint %d has no " |
15103 | "source location, using raw address"), | |
409873ef | 15104 | utp->number); |
8c042590 | 15105 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
15106 | addr_str = small_buf; |
15107 | } | |
15108 | ||
15109 | /* There's not much we can do with a sequence of bytecodes. */ | |
15110 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
15111 | warning (_("Uploaded tracepoint %d condition " |
15112 | "has no source form, ignoring it"), | |
409873ef | 15113 | utp->number); |
d5551862 | 15114 | |
8cdf0e15 | 15115 | if (!create_breakpoint (get_current_arch (), |
409873ef | 15116 | addr_str, |
e7e0cddf SS |
15117 | utp->cond_string, -1, NULL, |
15118 | 0 /* parse cond/thread */, | |
8cdf0e15 | 15119 | 0 /* tempflag */, |
0fb4aa4b | 15120 | utp->type /* type_wanted */, |
8cdf0e15 VP |
15121 | 0 /* Ignore count */, |
15122 | pending_break_support, | |
348d480f | 15123 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 15124 | 0 /* from_tty */, |
84f4c1fe | 15125 | utp->enabled /* enabled */, |
44f238bb PA |
15126 | 0 /* internal */, |
15127 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
fd9b8c24 PA |
15128 | return NULL; |
15129 | ||
409873ef | 15130 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
15131 | tp = get_tracepoint (tracepoint_count); |
15132 | gdb_assert (tp != NULL); | |
d5551862 | 15133 | |
00bf0b85 SS |
15134 | if (utp->pass > 0) |
15135 | { | |
8c042590 PM |
15136 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
15137 | tp->base.number); | |
00bf0b85 | 15138 | |
409873ef | 15139 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
15140 | } |
15141 | ||
409873ef SS |
15142 | /* If we have uploaded versions of the original commands, set up a |
15143 | special-purpose "reader" function and call the usual command line | |
15144 | reader, then pass the result to the breakpoint command-setting | |
15145 | function. */ | |
3149d8c1 | 15146 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 15147 | { |
409873ef | 15148 | struct command_line *cmd_list; |
00bf0b85 | 15149 | |
409873ef | 15150 | this_utp = utp; |
3149d8c1 | 15151 | next_cmd = 0; |
d5551862 | 15152 | |
409873ef SS |
15153 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
15154 | ||
d9b3f62e | 15155 | breakpoint_set_commands (&tp->base, cmd_list); |
00bf0b85 | 15156 | } |
3149d8c1 SS |
15157 | else if (!VEC_empty (char_ptr, utp->actions) |
15158 | || !VEC_empty (char_ptr, utp->step_actions)) | |
3e43a32a MS |
15159 | warning (_("Uploaded tracepoint %d actions " |
15160 | "have no source form, ignoring them"), | |
409873ef | 15161 | utp->number); |
00bf0b85 | 15162 | |
f196051f SS |
15163 | /* Copy any status information that might be available. */ |
15164 | tp->base.hit_count = utp->hit_count; | |
15165 | tp->traceframe_usage = utp->traceframe_usage; | |
15166 | ||
00bf0b85 | 15167 | return tp; |
d9b3f62e | 15168 | } |
00bf0b85 | 15169 | |
1042e4c0 SS |
15170 | /* Print information on tracepoint number TPNUM_EXP, or all if |
15171 | omitted. */ | |
15172 | ||
15173 | static void | |
e5a67952 | 15174 | tracepoints_info (char *args, int from_tty) |
1042e4c0 | 15175 | { |
79a45e25 | 15176 | struct ui_out *uiout = current_uiout; |
e5a67952 | 15177 | int num_printed; |
1042e4c0 | 15178 | |
e5a67952 | 15179 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
15180 | |
15181 | if (num_printed == 0) | |
1042e4c0 | 15182 | { |
e5a67952 | 15183 | if (args == NULL || *args == '\0') |
d77f58be SS |
15184 | ui_out_message (uiout, 0, "No tracepoints.\n"); |
15185 | else | |
e5a67952 | 15186 | ui_out_message (uiout, 0, "No tracepoint matching '%s'.\n", args); |
1042e4c0 | 15187 | } |
ad443146 SS |
15188 | |
15189 | default_collect_info (); | |
1042e4c0 SS |
15190 | } |
15191 | ||
4a64f543 | 15192 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
15193 | Not supported by all targets. */ |
15194 | static void | |
15195 | enable_trace_command (char *args, int from_tty) | |
15196 | { | |
15197 | enable_command (args, from_tty); | |
15198 | } | |
15199 | ||
4a64f543 | 15200 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
15201 | Not supported by all targets. */ |
15202 | static void | |
15203 | disable_trace_command (char *args, int from_tty) | |
15204 | { | |
15205 | disable_command (args, from_tty); | |
15206 | } | |
15207 | ||
4a64f543 | 15208 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 SS |
15209 | static void |
15210 | delete_trace_command (char *arg, int from_tty) | |
15211 | { | |
35df4500 | 15212 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
15213 | |
15214 | dont_repeat (); | |
15215 | ||
15216 | if (arg == 0) | |
15217 | { | |
15218 | int breaks_to_delete = 0; | |
15219 | ||
15220 | /* Delete all breakpoints if no argument. | |
15221 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
15222 | have to be deleted with an explicit breakpoint number |
15223 | argument. */ | |
1042e4c0 | 15224 | ALL_TRACEPOINTS (b) |
46c6471b | 15225 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
15226 | { |
15227 | breaks_to_delete = 1; | |
15228 | break; | |
15229 | } | |
1042e4c0 SS |
15230 | |
15231 | /* Ask user only if there are some breakpoints to delete. */ | |
15232 | if (!from_tty | |
15233 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
15234 | { | |
35df4500 | 15235 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 15236 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 15237 | delete_breakpoint (b); |
1042e4c0 SS |
15238 | } |
15239 | } | |
15240 | else | |
51be5b68 | 15241 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
1042e4c0 SS |
15242 | } |
15243 | ||
197f0a60 TT |
15244 | /* Helper function for trace_pass_command. */ |
15245 | ||
15246 | static void | |
d9b3f62e | 15247 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 15248 | { |
d9b3f62e | 15249 | tp->pass_count = count; |
6f6484cd | 15250 | observer_notify_breakpoint_modified (&tp->base); |
197f0a60 TT |
15251 | if (from_tty) |
15252 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
d9b3f62e | 15253 | tp->base.number, count); |
197f0a60 TT |
15254 | } |
15255 | ||
1042e4c0 SS |
15256 | /* Set passcount for tracepoint. |
15257 | ||
15258 | First command argument is passcount, second is tracepoint number. | |
15259 | If tracepoint number omitted, apply to most recently defined. | |
15260 | Also accepts special argument "all". */ | |
15261 | ||
15262 | static void | |
15263 | trace_pass_command (char *args, int from_tty) | |
15264 | { | |
d9b3f62e | 15265 | struct tracepoint *t1; |
1042e4c0 | 15266 | unsigned int count; |
1042e4c0 SS |
15267 | |
15268 | if (args == 0 || *args == 0) | |
3e43a32a MS |
15269 | error (_("passcount command requires an " |
15270 | "argument (count + optional TP num)")); | |
1042e4c0 | 15271 | |
4a64f543 | 15272 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 SS |
15273 | |
15274 | while (*args && isspace ((int) *args)) | |
15275 | args++; | |
15276 | ||
15277 | if (*args && strncasecmp (args, "all", 3) == 0) | |
15278 | { | |
d9b3f62e PA |
15279 | struct breakpoint *b; |
15280 | ||
1042e4c0 | 15281 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
15282 | if (*args) |
15283 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 15284 | |
d9b3f62e | 15285 | ALL_TRACEPOINTS (b) |
197f0a60 | 15286 | { |
d9b3f62e | 15287 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
15288 | trace_pass_set_count (t1, count, from_tty); |
15289 | } | |
15290 | } | |
15291 | else if (*args == '\0') | |
1042e4c0 | 15292 | { |
197f0a60 | 15293 | t1 = get_tracepoint_by_number (&args, NULL, 1); |
1042e4c0 | 15294 | if (t1) |
197f0a60 TT |
15295 | trace_pass_set_count (t1, count, from_tty); |
15296 | } | |
15297 | else | |
15298 | { | |
15299 | struct get_number_or_range_state state; | |
15300 | ||
15301 | init_number_or_range (&state, args); | |
15302 | while (!state.finished) | |
1042e4c0 | 15303 | { |
197f0a60 TT |
15304 | t1 = get_tracepoint_by_number (&args, &state, 1); |
15305 | if (t1) | |
15306 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
15307 | } |
15308 | } | |
1042e4c0 SS |
15309 | } |
15310 | ||
d9b3f62e | 15311 | struct tracepoint * |
1042e4c0 SS |
15312 | get_tracepoint (int num) |
15313 | { | |
15314 | struct breakpoint *t; | |
15315 | ||
15316 | ALL_TRACEPOINTS (t) | |
15317 | if (t->number == num) | |
d9b3f62e | 15318 | return (struct tracepoint *) t; |
1042e4c0 SS |
15319 | |
15320 | return NULL; | |
15321 | } | |
15322 | ||
d5551862 SS |
15323 | /* Find the tracepoint with the given target-side number (which may be |
15324 | different from the tracepoint number after disconnecting and | |
15325 | reconnecting). */ | |
15326 | ||
d9b3f62e | 15327 | struct tracepoint * |
d5551862 SS |
15328 | get_tracepoint_by_number_on_target (int num) |
15329 | { | |
d9b3f62e | 15330 | struct breakpoint *b; |
d5551862 | 15331 | |
d9b3f62e PA |
15332 | ALL_TRACEPOINTS (b) |
15333 | { | |
15334 | struct tracepoint *t = (struct tracepoint *) b; | |
15335 | ||
15336 | if (t->number_on_target == num) | |
15337 | return t; | |
15338 | } | |
d5551862 SS |
15339 | |
15340 | return NULL; | |
15341 | } | |
15342 | ||
1042e4c0 | 15343 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 TT |
15344 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
15345 | If OPTIONAL_P is true, then if the argument is missing, the most | |
1042e4c0 | 15346 | recent tracepoint (tracepoint_count) is returned. */ |
d9b3f62e | 15347 | struct tracepoint * |
197f0a60 TT |
15348 | get_tracepoint_by_number (char **arg, |
15349 | struct get_number_or_range_state *state, | |
15350 | int optional_p) | |
1042e4c0 | 15351 | { |
1042e4c0 SS |
15352 | struct breakpoint *t; |
15353 | int tpnum; | |
15354 | char *instring = arg == NULL ? NULL : *arg; | |
15355 | ||
197f0a60 TT |
15356 | if (state) |
15357 | { | |
15358 | gdb_assert (!state->finished); | |
15359 | tpnum = get_number_or_range (state); | |
15360 | } | |
15361 | else if (arg == NULL || *arg == NULL || ! **arg) | |
1042e4c0 SS |
15362 | { |
15363 | if (optional_p) | |
15364 | tpnum = tracepoint_count; | |
15365 | else | |
15366 | error_no_arg (_("tracepoint number")); | |
15367 | } | |
15368 | else | |
197f0a60 | 15369 | tpnum = get_number (arg); |
1042e4c0 SS |
15370 | |
15371 | if (tpnum <= 0) | |
15372 | { | |
15373 | if (instring && *instring) | |
15374 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
15375 | instring); | |
15376 | else | |
3e43a32a MS |
15377 | printf_filtered (_("Tracepoint argument missing " |
15378 | "and no previous tracepoint\n")); | |
1042e4c0 SS |
15379 | return NULL; |
15380 | } | |
15381 | ||
15382 | ALL_TRACEPOINTS (t) | |
15383 | if (t->number == tpnum) | |
15384 | { | |
d9b3f62e | 15385 | return (struct tracepoint *) t; |
1042e4c0 SS |
15386 | } |
15387 | ||
1042e4c0 SS |
15388 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
15389 | return NULL; | |
15390 | } | |
15391 | ||
d9b3f62e PA |
15392 | void |
15393 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
15394 | { | |
15395 | if (b->thread != -1) | |
15396 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
15397 | ||
15398 | if (b->task != 0) | |
15399 | fprintf_unfiltered (fp, " task %d", b->task); | |
15400 | ||
15401 | fprintf_unfiltered (fp, "\n"); | |
15402 | } | |
15403 | ||
6149aea9 PA |
15404 | /* Save information on user settable breakpoints (watchpoints, etc) to |
15405 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
15406 | on each breakpoint and only include the ones for which it returns | |
15407 | non-zero. */ | |
15408 | ||
1042e4c0 | 15409 | static void |
6149aea9 PA |
15410 | save_breakpoints (char *filename, int from_tty, |
15411 | int (*filter) (const struct breakpoint *)) | |
1042e4c0 SS |
15412 | { |
15413 | struct breakpoint *tp; | |
6149aea9 | 15414 | int any = 0; |
a7bdde9e | 15415 | char *pathname; |
1042e4c0 | 15416 | struct cleanup *cleanup; |
a7bdde9e | 15417 | struct ui_file *fp; |
6149aea9 | 15418 | int extra_trace_bits = 0; |
1042e4c0 | 15419 | |
6149aea9 PA |
15420 | if (filename == 0 || *filename == 0) |
15421 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
15422 | |
15423 | /* See if we have anything to save. */ | |
6149aea9 | 15424 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15425 | { |
6149aea9 | 15426 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15427 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
15428 | continue; |
15429 | ||
15430 | /* If we have a filter, only save the breakpoints it accepts. */ | |
15431 | if (filter && !filter (tp)) | |
15432 | continue; | |
15433 | ||
15434 | any = 1; | |
15435 | ||
15436 | if (is_tracepoint (tp)) | |
15437 | { | |
15438 | extra_trace_bits = 1; | |
15439 | ||
15440 | /* We can stop searching. */ | |
15441 | break; | |
15442 | } | |
1042e4c0 | 15443 | } |
6149aea9 PA |
15444 | |
15445 | if (!any) | |
1042e4c0 | 15446 | { |
6149aea9 | 15447 | warning (_("Nothing to save.")); |
1042e4c0 SS |
15448 | return; |
15449 | } | |
15450 | ||
6149aea9 | 15451 | pathname = tilde_expand (filename); |
1042e4c0 | 15452 | cleanup = make_cleanup (xfree, pathname); |
a7bdde9e | 15453 | fp = gdb_fopen (pathname, "w"); |
059fb39f | 15454 | if (!fp) |
6149aea9 PA |
15455 | error (_("Unable to open file '%s' for saving (%s)"), |
15456 | filename, safe_strerror (errno)); | |
a7bdde9e | 15457 | make_cleanup_ui_file_delete (fp); |
8bf6485c | 15458 | |
6149aea9 PA |
15459 | if (extra_trace_bits) |
15460 | save_trace_state_variables (fp); | |
8bf6485c | 15461 | |
6149aea9 | 15462 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15463 | { |
6149aea9 | 15464 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15465 | if (!user_breakpoint_p (tp)) |
6149aea9 | 15466 | continue; |
8bf6485c | 15467 | |
6149aea9 PA |
15468 | /* If we have a filter, only save the breakpoints it accepts. */ |
15469 | if (filter && !filter (tp)) | |
15470 | continue; | |
15471 | ||
348d480f | 15472 | tp->ops->print_recreate (tp, fp); |
1042e4c0 | 15473 | |
6149aea9 PA |
15474 | /* Note, we can't rely on tp->number for anything, as we can't |
15475 | assume the recreated breakpoint numbers will match. Use $bpnum | |
15476 | instead. */ | |
15477 | ||
15478 | if (tp->cond_string) | |
15479 | fprintf_unfiltered (fp, " condition $bpnum %s\n", tp->cond_string); | |
15480 | ||
15481 | if (tp->ignore_count) | |
15482 | fprintf_unfiltered (fp, " ignore $bpnum %d\n", tp->ignore_count); | |
15483 | ||
a7bdde9e | 15484 | if (tp->commands) |
1042e4c0 | 15485 | { |
a7bdde9e VP |
15486 | volatile struct gdb_exception ex; |
15487 | ||
6149aea9 | 15488 | fprintf_unfiltered (fp, " commands\n"); |
a7bdde9e | 15489 | |
79a45e25 | 15490 | ui_out_redirect (current_uiout, fp); |
14dba4b4 | 15491 | TRY_CATCH (ex, RETURN_MASK_ALL) |
1042e4c0 | 15492 | { |
79a45e25 | 15493 | print_command_lines (current_uiout, tp->commands->commands, 2); |
a7bdde9e | 15494 | } |
79a45e25 | 15495 | ui_out_redirect (current_uiout, NULL); |
1042e4c0 | 15496 | |
a7bdde9e VP |
15497 | if (ex.reason < 0) |
15498 | throw_exception (ex); | |
1042e4c0 | 15499 | |
a7bdde9e | 15500 | fprintf_unfiltered (fp, " end\n"); |
1042e4c0 | 15501 | } |
6149aea9 PA |
15502 | |
15503 | if (tp->enable_state == bp_disabled) | |
15504 | fprintf_unfiltered (fp, "disable\n"); | |
15505 | ||
15506 | /* If this is a multi-location breakpoint, check if the locations | |
15507 | should be individually disabled. Watchpoint locations are | |
15508 | special, and not user visible. */ | |
15509 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15510 | { | |
15511 | struct bp_location *loc; | |
15512 | int n = 1; | |
15513 | ||
15514 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
15515 | if (!loc->enabled) | |
15516 | fprintf_unfiltered (fp, "disable $bpnum.%d\n", n); | |
15517 | } | |
1042e4c0 | 15518 | } |
8bf6485c | 15519 | |
6149aea9 | 15520 | if (extra_trace_bits && *default_collect) |
8bf6485c SS |
15521 | fprintf_unfiltered (fp, "set default-collect %s\n", default_collect); |
15522 | ||
1042e4c0 SS |
15523 | do_cleanups (cleanup); |
15524 | if (from_tty) | |
6149aea9 PA |
15525 | printf_filtered (_("Saved to file '%s'.\n"), filename); |
15526 | } | |
15527 | ||
15528 | /* The `save breakpoints' command. */ | |
15529 | ||
15530 | static void | |
15531 | save_breakpoints_command (char *args, int from_tty) | |
15532 | { | |
15533 | save_breakpoints (args, from_tty, NULL); | |
15534 | } | |
15535 | ||
15536 | /* The `save tracepoints' command. */ | |
15537 | ||
15538 | static void | |
15539 | save_tracepoints_command (char *args, int from_tty) | |
15540 | { | |
15541 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15542 | } |
15543 | ||
15544 | /* Create a vector of all tracepoints. */ | |
15545 | ||
15546 | VEC(breakpoint_p) * | |
eeae04df | 15547 | all_tracepoints (void) |
1042e4c0 SS |
15548 | { |
15549 | VEC(breakpoint_p) *tp_vec = 0; | |
15550 | struct breakpoint *tp; | |
15551 | ||
15552 | ALL_TRACEPOINTS (tp) | |
15553 | { | |
15554 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
15555 | } | |
15556 | ||
15557 | return tp_vec; | |
15558 | } | |
15559 | ||
c906108c | 15560 | \f |
4a64f543 MS |
15561 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15562 | commands. It is defined as a macro to prevent duplication. | |
15563 | COMMAND should be a string constant containing the name of the | |
15564 | command. */ | |
31e2b00f | 15565 | #define BREAK_ARGS_HELP(command) \ |
fb7b5af4 SDJ |
15566 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\ |
15567 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ | |
15568 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
15569 | guessed probe type) or `-probe-stap' (for a SystemTap probe).\n\ | |
31e2b00f AS |
15570 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ |
15571 | If a line number is specified, break at start of code for that line.\n\ | |
15572 | If a function is specified, break at start of code for that function.\n\ | |
15573 | If an address is specified, break at that exact address.\n\ | |
dc10affe PA |
15574 | With no LOCATION, uses current execution address of the selected\n\ |
15575 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15576 | \n\ |
15577 | THREADNUM is the number from \"info threads\".\n\ | |
15578 | CONDITION is a boolean expression.\n\ | |
15579 | \n\ | |
d41c0fc8 PA |
15580 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15581 | conditions are different.\n\ | |
31e2b00f AS |
15582 | \n\ |
15583 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15584 | ||
44feb3ce TT |
15585 | /* List of subcommands for "catch". */ |
15586 | static struct cmd_list_element *catch_cmdlist; | |
15587 | ||
15588 | /* List of subcommands for "tcatch". */ | |
15589 | static struct cmd_list_element *tcatch_cmdlist; | |
15590 | ||
9ac4176b | 15591 | void |
44feb3ce TT |
15592 | add_catch_command (char *name, char *docstring, |
15593 | void (*sfunc) (char *args, int from_tty, | |
15594 | struct cmd_list_element *command), | |
625e8578 | 15595 | completer_ftype *completer, |
44feb3ce TT |
15596 | void *user_data_catch, |
15597 | void *user_data_tcatch) | |
15598 | { | |
15599 | struct cmd_list_element *command; | |
15600 | ||
15601 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
15602 | &catch_cmdlist); | |
15603 | set_cmd_sfunc (command, sfunc); | |
15604 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15605 | set_cmd_completer (command, completer); |
44feb3ce TT |
15606 | |
15607 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
15608 | &tcatch_cmdlist); | |
15609 | set_cmd_sfunc (command, sfunc); | |
15610 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15611 | set_cmd_completer (command, completer); |
44feb3ce TT |
15612 | } |
15613 | ||
6c95b8df | 15614 | static void |
a79b8f6e | 15615 | clear_syscall_counts (struct inferior *inf) |
6c95b8df | 15616 | { |
fa3064dd YQ |
15617 | struct catch_syscall_inferior_data *inf_data |
15618 | = get_catch_syscall_inferior_data (inf); | |
15619 | ||
15620 | inf_data->total_syscalls_count = 0; | |
15621 | inf_data->any_syscall_count = 0; | |
15622 | VEC_free (int, inf_data->syscalls_counts); | |
6c95b8df PA |
15623 | } |
15624 | ||
6149aea9 PA |
15625 | static void |
15626 | save_command (char *arg, int from_tty) | |
15627 | { | |
3e43a32a MS |
15628 | printf_unfiltered (_("\"save\" must be followed by " |
15629 | "the name of a save subcommand.\n")); | |
6149aea9 PA |
15630 | help_list (save_cmdlist, "save ", -1, gdb_stdout); |
15631 | } | |
15632 | ||
84f4c1fe PM |
15633 | struct breakpoint * |
15634 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
15635 | void *data) | |
15636 | { | |
35df4500 | 15637 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15638 | |
35df4500 | 15639 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
15640 | { |
15641 | if ((*callback) (b, data)) | |
15642 | return b; | |
15643 | } | |
15644 | ||
15645 | return NULL; | |
15646 | } | |
15647 | ||
0574c78f GB |
15648 | /* Zero if any of the breakpoint's locations could be a location where |
15649 | functions have been inlined, nonzero otherwise. */ | |
15650 | ||
15651 | static int | |
15652 | is_non_inline_function (struct breakpoint *b) | |
15653 | { | |
15654 | /* The shared library event breakpoint is set on the address of a | |
15655 | non-inline function. */ | |
15656 | if (b->type == bp_shlib_event) | |
15657 | return 1; | |
15658 | ||
15659 | return 0; | |
15660 | } | |
15661 | ||
15662 | /* Nonzero if the specified PC cannot be a location where functions | |
15663 | have been inlined. */ | |
15664 | ||
15665 | int | |
09ac7c10 TT |
15666 | pc_at_non_inline_function (struct address_space *aspace, CORE_ADDR pc, |
15667 | const struct target_waitstatus *ws) | |
0574c78f GB |
15668 | { |
15669 | struct breakpoint *b; | |
15670 | struct bp_location *bl; | |
15671 | ||
15672 | ALL_BREAKPOINTS (b) | |
15673 | { | |
15674 | if (!is_non_inline_function (b)) | |
15675 | continue; | |
15676 | ||
15677 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15678 | { | |
15679 | if (!bl->shlib_disabled | |
09ac7c10 | 15680 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15681 | return 1; |
15682 | } | |
15683 | } | |
15684 | ||
15685 | return 0; | |
15686 | } | |
15687 | ||
2060206e PA |
15688 | void |
15689 | initialize_breakpoint_ops (void) | |
15690 | { | |
15691 | static int initialized = 0; | |
15692 | ||
15693 | struct breakpoint_ops *ops; | |
15694 | ||
15695 | if (initialized) | |
15696 | return; | |
15697 | initialized = 1; | |
15698 | ||
15699 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15700 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15701 | internal and momentary breakpoints, etc.). */ | |
15702 | ops = &bkpt_base_breakpoint_ops; | |
15703 | *ops = base_breakpoint_ops; | |
15704 | ops->re_set = bkpt_re_set; | |
15705 | ops->insert_location = bkpt_insert_location; | |
15706 | ops->remove_location = bkpt_remove_location; | |
15707 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
983af33b SDJ |
15708 | ops->create_sals_from_address = bkpt_create_sals_from_address; |
15709 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; | |
15710 | ops->decode_linespec = bkpt_decode_linespec; | |
2060206e PA |
15711 | |
15712 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15713 | ops = &bkpt_breakpoint_ops; | |
15714 | *ops = bkpt_base_breakpoint_ops; | |
15715 | ops->re_set = bkpt_re_set; | |
15716 | ops->resources_needed = bkpt_resources_needed; | |
15717 | ops->print_it = bkpt_print_it; | |
15718 | ops->print_mention = bkpt_print_mention; | |
15719 | ops->print_recreate = bkpt_print_recreate; | |
15720 | ||
15721 | /* Ranged breakpoints. */ | |
15722 | ops = &ranged_breakpoint_ops; | |
15723 | *ops = bkpt_breakpoint_ops; | |
15724 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15725 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15726 | ops->print_it = print_it_ranged_breakpoint; | |
15727 | ops->print_one = print_one_ranged_breakpoint; | |
15728 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15729 | ops->print_mention = print_mention_ranged_breakpoint; | |
15730 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15731 | ||
15732 | /* Internal breakpoints. */ | |
15733 | ops = &internal_breakpoint_ops; | |
15734 | *ops = bkpt_base_breakpoint_ops; | |
15735 | ops->re_set = internal_bkpt_re_set; | |
15736 | ops->check_status = internal_bkpt_check_status; | |
15737 | ops->print_it = internal_bkpt_print_it; | |
15738 | ops->print_mention = internal_bkpt_print_mention; | |
15739 | ||
15740 | /* Momentary breakpoints. */ | |
15741 | ops = &momentary_breakpoint_ops; | |
15742 | *ops = bkpt_base_breakpoint_ops; | |
15743 | ops->re_set = momentary_bkpt_re_set; | |
15744 | ops->check_status = momentary_bkpt_check_status; | |
15745 | ops->print_it = momentary_bkpt_print_it; | |
15746 | ops->print_mention = momentary_bkpt_print_mention; | |
15747 | ||
e2e4d78b JK |
15748 | /* Momentary breakpoints for bp_longjmp and bp_exception. */ |
15749 | ops = &longjmp_breakpoint_ops; | |
15750 | *ops = momentary_breakpoint_ops; | |
15751 | ops->dtor = longjmp_bkpt_dtor; | |
15752 | ||
55aa24fb SDJ |
15753 | /* Probe breakpoints. */ |
15754 | ops = &bkpt_probe_breakpoint_ops; | |
15755 | *ops = bkpt_breakpoint_ops; | |
15756 | ops->insert_location = bkpt_probe_insert_location; | |
15757 | ops->remove_location = bkpt_probe_remove_location; | |
15758 | ops->create_sals_from_address = bkpt_probe_create_sals_from_address; | |
15759 | ops->decode_linespec = bkpt_probe_decode_linespec; | |
15760 | ||
2060206e PA |
15761 | /* GNU v3 exception catchpoints. */ |
15762 | ops = &gnu_v3_exception_catchpoint_ops; | |
15763 | *ops = bkpt_breakpoint_ops; | |
15764 | ops->print_it = print_it_exception_catchpoint; | |
15765 | ops->print_one = print_one_exception_catchpoint; | |
15766 | ops->print_mention = print_mention_exception_catchpoint; | |
15767 | ops->print_recreate = print_recreate_exception_catchpoint; | |
15768 | ||
15769 | /* Watchpoints. */ | |
15770 | ops = &watchpoint_breakpoint_ops; | |
15771 | *ops = base_breakpoint_ops; | |
3a5c3e22 | 15772 | ops->dtor = dtor_watchpoint; |
2060206e PA |
15773 | ops->re_set = re_set_watchpoint; |
15774 | ops->insert_location = insert_watchpoint; | |
15775 | ops->remove_location = remove_watchpoint; | |
15776 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15777 | ops->check_status = check_status_watchpoint; | |
15778 | ops->resources_needed = resources_needed_watchpoint; | |
15779 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15780 | ops->print_it = print_it_watchpoint; | |
15781 | ops->print_mention = print_mention_watchpoint; | |
15782 | ops->print_recreate = print_recreate_watchpoint; | |
15783 | ||
15784 | /* Masked watchpoints. */ | |
15785 | ops = &masked_watchpoint_breakpoint_ops; | |
15786 | *ops = watchpoint_breakpoint_ops; | |
15787 | ops->insert_location = insert_masked_watchpoint; | |
15788 | ops->remove_location = remove_masked_watchpoint; | |
15789 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15790 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15791 | ops->print_it = print_it_masked_watchpoint; | |
15792 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15793 | ops->print_mention = print_mention_masked_watchpoint; | |
15794 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15795 | ||
15796 | /* Tracepoints. */ | |
15797 | ops = &tracepoint_breakpoint_ops; | |
15798 | *ops = base_breakpoint_ops; | |
15799 | ops->re_set = tracepoint_re_set; | |
15800 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15801 | ops->print_one_detail = tracepoint_print_one_detail; | |
15802 | ops->print_mention = tracepoint_print_mention; | |
15803 | ops->print_recreate = tracepoint_print_recreate; | |
983af33b SDJ |
15804 | ops->create_sals_from_address = tracepoint_create_sals_from_address; |
15805 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; | |
15806 | ops->decode_linespec = tracepoint_decode_linespec; | |
15807 | ||
55aa24fb SDJ |
15808 | /* Probe tracepoints. */ |
15809 | ops = &tracepoint_probe_breakpoint_ops; | |
15810 | *ops = tracepoint_breakpoint_ops; | |
15811 | ops->create_sals_from_address = tracepoint_probe_create_sals_from_address; | |
15812 | ops->decode_linespec = tracepoint_probe_decode_linespec; | |
15813 | ||
983af33b SDJ |
15814 | /* Static tracepoints with marker (`-m'). */ |
15815 | ops = &strace_marker_breakpoint_ops; | |
15816 | *ops = tracepoint_breakpoint_ops; | |
15817 | ops->create_sals_from_address = strace_marker_create_sals_from_address; | |
15818 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; | |
15819 | ops->decode_linespec = strace_marker_decode_linespec; | |
2060206e PA |
15820 | |
15821 | /* Fork catchpoints. */ | |
15822 | ops = &catch_fork_breakpoint_ops; | |
15823 | *ops = base_breakpoint_ops; | |
15824 | ops->insert_location = insert_catch_fork; | |
15825 | ops->remove_location = remove_catch_fork; | |
15826 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15827 | ops->print_it = print_it_catch_fork; | |
15828 | ops->print_one = print_one_catch_fork; | |
15829 | ops->print_mention = print_mention_catch_fork; | |
15830 | ops->print_recreate = print_recreate_catch_fork; | |
15831 | ||
15832 | /* Vfork catchpoints. */ | |
15833 | ops = &catch_vfork_breakpoint_ops; | |
15834 | *ops = base_breakpoint_ops; | |
15835 | ops->insert_location = insert_catch_vfork; | |
15836 | ops->remove_location = remove_catch_vfork; | |
15837 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15838 | ops->print_it = print_it_catch_vfork; | |
15839 | ops->print_one = print_one_catch_vfork; | |
15840 | ops->print_mention = print_mention_catch_vfork; | |
15841 | ops->print_recreate = print_recreate_catch_vfork; | |
15842 | ||
15843 | /* Exec catchpoints. */ | |
15844 | ops = &catch_exec_breakpoint_ops; | |
15845 | *ops = base_breakpoint_ops; | |
15846 | ops->dtor = dtor_catch_exec; | |
15847 | ops->insert_location = insert_catch_exec; | |
15848 | ops->remove_location = remove_catch_exec; | |
15849 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15850 | ops->print_it = print_it_catch_exec; | |
15851 | ops->print_one = print_one_catch_exec; | |
15852 | ops->print_mention = print_mention_catch_exec; | |
15853 | ops->print_recreate = print_recreate_catch_exec; | |
15854 | ||
15855 | /* Syscall catchpoints. */ | |
15856 | ops = &catch_syscall_breakpoint_ops; | |
15857 | *ops = base_breakpoint_ops; | |
15858 | ops->dtor = dtor_catch_syscall; | |
15859 | ops->insert_location = insert_catch_syscall; | |
15860 | ops->remove_location = remove_catch_syscall; | |
15861 | ops->breakpoint_hit = breakpoint_hit_catch_syscall; | |
15862 | ops->print_it = print_it_catch_syscall; | |
15863 | ops->print_one = print_one_catch_syscall; | |
15864 | ops->print_mention = print_mention_catch_syscall; | |
15865 | ops->print_recreate = print_recreate_catch_syscall; | |
edcc5120 TT |
15866 | |
15867 | /* Solib-related catchpoints. */ | |
15868 | ops = &catch_solib_breakpoint_ops; | |
15869 | *ops = base_breakpoint_ops; | |
15870 | ops->dtor = dtor_catch_solib; | |
15871 | ops->insert_location = insert_catch_solib; | |
15872 | ops->remove_location = remove_catch_solib; | |
15873 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15874 | ops->check_status = check_status_catch_solib; | |
15875 | ops->print_it = print_it_catch_solib; | |
15876 | ops->print_one = print_one_catch_solib; | |
15877 | ops->print_mention = print_mention_catch_solib; | |
15878 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15879 | |
15880 | ops = &dprintf_breakpoint_ops; | |
15881 | *ops = bkpt_base_breakpoint_ops; | |
15882 | ops->re_set = bkpt_re_set; | |
15883 | ops->resources_needed = bkpt_resources_needed; | |
15884 | ops->print_it = bkpt_print_it; | |
15885 | ops->print_mention = bkpt_print_mention; | |
15886 | ops->print_recreate = bkpt_print_recreate; | |
2060206e PA |
15887 | } |
15888 | ||
8bfd80db YQ |
15889 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
15890 | ||
15891 | static struct cmd_list_element *enablebreaklist = NULL; | |
15892 | ||
c906108c | 15893 | void |
fba45db2 | 15894 | _initialize_breakpoint (void) |
c906108c SS |
15895 | { |
15896 | struct cmd_list_element *c; | |
15897 | ||
2060206e PA |
15898 | initialize_breakpoint_ops (); |
15899 | ||
84acb35a | 15900 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
6c95b8df | 15901 | observer_attach_inferior_exit (clear_syscall_counts); |
1f3b5d1b | 15902 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 15903 | |
55aa24fb SDJ |
15904 | breakpoint_objfile_key |
15905 | = register_objfile_data_with_cleanup (NULL, free_breakpoint_probes); | |
17450429 | 15906 | |
fa3064dd | 15907 | catch_syscall_inferior_data |
8e260fc0 TT |
15908 | = register_inferior_data_with_cleanup (NULL, |
15909 | catch_syscall_inferior_data_cleanup); | |
fa3064dd | 15910 | |
c906108c SS |
15911 | breakpoint_chain = 0; |
15912 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15913 | before a breakpoint is set. */ | |
15914 | breakpoint_count = 0; | |
15915 | ||
1042e4c0 SS |
15916 | tracepoint_count = 0; |
15917 | ||
1bedd215 AC |
15918 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15919 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15920 | Usage is `ignore N COUNT'.")); | |
c906108c | 15921 | if (xdb_commands) |
c5aa993b | 15922 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 15923 | |
1bedd215 AC |
15924 | add_com ("commands", class_breakpoint, commands_command, _("\ |
15925 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
15926 | Give breakpoint number as argument after \"commands\".\n\ |
15927 | With no argument, the targeted breakpoint is the last one set.\n\ | |
15928 | The commands themselves follow starting on the next line.\n\ | |
15929 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15930 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15931 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15932 | |
d55637df | 15933 | c = add_com ("condition", class_breakpoint, condition_command, _("\ |
1bedd215 | 15934 | Specify breakpoint number N to break only if COND is true.\n\ |
c906108c | 15935 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 15936 | expression to be evaluated whenever breakpoint N is reached.")); |
d55637df | 15937 | set_cmd_completer (c, condition_completer); |
c906108c | 15938 | |
1bedd215 | 15939 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15940 | Set a temporary breakpoint.\n\ |
c906108c SS |
15941 | Like \"break\" except the breakpoint is only temporary,\n\ |
15942 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15943 | by using \"enable delete\" on the breakpoint number.\n\ |
15944 | \n" | |
15945 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15946 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15947 | |
1bedd215 | 15948 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15949 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15950 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15951 | some target hardware may not have this support.\n\ |
15952 | \n" | |
15953 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15954 | set_cmd_completer (c, location_completer); |
c906108c | 15955 | |
1bedd215 | 15956 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15957 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 15958 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
15959 | so it will be deleted when hit.\n\ |
15960 | \n" | |
15961 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 15962 | set_cmd_completer (c, location_completer); |
c906108c | 15963 | |
1bedd215 AC |
15964 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
15965 | Enable some breakpoints.\n\ | |
c906108c SS |
15966 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15967 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15968 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15969 | With a subcommand you can enable temporarily."), |
c906108c SS |
15970 | &enablelist, "enable ", 1, &cmdlist); |
15971 | if (xdb_commands) | |
1bedd215 AC |
15972 | add_com ("ab", class_breakpoint, enable_command, _("\ |
15973 | Enable some breakpoints.\n\ | |
c906108c SS |
15974 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15975 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15976 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15977 | With a subcommand you can enable temporarily.")); |
c906108c SS |
15978 | |
15979 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
15980 | ||
84951ab5 | 15981 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 15982 | Enable some breakpoints.\n\ |
c906108c SS |
15983 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15984 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15985 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 15986 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 15987 | |
1a966eab AC |
15988 | add_cmd ("once", no_class, enable_once_command, _("\ |
15989 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15990 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
15991 | &enablebreaklist); |
15992 | ||
1a966eab AC |
15993 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15994 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15995 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15996 | &enablebreaklist); |
15997 | ||
816338b5 SS |
15998 | add_cmd ("count", no_class, enable_count_command, _("\ |
15999 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
16000 | If a breakpoint is hit while enabled in this fashion,\n\ | |
16001 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
16002 | &enablebreaklist); | |
16003 | ||
1a966eab AC |
16004 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
16005 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
16006 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
16007 | &enablelist); |
16008 | ||
1a966eab AC |
16009 | add_cmd ("once", no_class, enable_once_command, _("\ |
16010 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
16011 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
816338b5 SS |
16012 | &enablelist); |
16013 | ||
16014 | add_cmd ("count", no_class, enable_count_command, _("\ | |
16015 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
16016 | If a breakpoint is hit while enabled in this fashion,\n\ | |
16017 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
16018 | &enablelist); |
16019 | ||
1bedd215 AC |
16020 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
16021 | Disable some breakpoints.\n\ | |
c906108c SS |
16022 | Arguments are breakpoint numbers with spaces in between.\n\ |
16023 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 16024 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
16025 | &disablelist, "disable ", 1, &cmdlist); |
16026 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
16027 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
16028 | if (xdb_commands) | |
1bedd215 AC |
16029 | add_com ("sb", class_breakpoint, disable_command, _("\ |
16030 | Disable some breakpoints.\n\ | |
c906108c SS |
16031 | Arguments are breakpoint numbers with spaces in between.\n\ |
16032 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 16033 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.")); |
c906108c | 16034 | |
1a966eab AC |
16035 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
16036 | Disable some breakpoints.\n\ | |
c906108c SS |
16037 | Arguments are breakpoint numbers with spaces in between.\n\ |
16038 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 16039 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 16040 | This command may be abbreviated \"disable\"."), |
c906108c SS |
16041 | &disablelist); |
16042 | ||
1bedd215 AC |
16043 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
16044 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
16045 | Arguments are breakpoint numbers with spaces in between.\n\ |
16046 | To delete all breakpoints, give no argument.\n\ | |
16047 | \n\ | |
16048 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 16049 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
16050 | &deletelist, "delete ", 1, &cmdlist); |
16051 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 16052 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 16053 | if (xdb_commands) |
1bedd215 AC |
16054 | add_com ("db", class_breakpoint, delete_command, _("\ |
16055 | Delete some breakpoints.\n\ | |
c906108c | 16056 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 16057 | To delete all breakpoints, give no argument.\n")); |
c906108c | 16058 | |
1a966eab AC |
16059 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
16060 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
16061 | Arguments are breakpoint numbers with spaces in between.\n\ |
16062 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 16063 | This command may be abbreviated \"delete\"."), |
c906108c SS |
16064 | &deletelist); |
16065 | ||
1bedd215 AC |
16066 | add_com ("clear", class_breakpoint, clear_command, _("\ |
16067 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
16068 | Argument may be line number, function name, or \"*\" and an address.\n\ |
16069 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
16070 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
16071 | If an address is specified, breakpoints at that address are cleared.\n\ |
16072 | \n\ | |
16073 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
16074 | is executing in.\n\ |
16075 | \n\ | |
1bedd215 | 16076 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 16077 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 16078 | |
1bedd215 | 16079 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
16080 | Set breakpoint at specified line or function.\n" |
16081 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 16082 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 16083 | |
c906108c SS |
16084 | add_com_alias ("b", "break", class_run, 1); |
16085 | add_com_alias ("br", "break", class_run, 1); | |
16086 | add_com_alias ("bre", "break", class_run, 1); | |
16087 | add_com_alias ("brea", "break", class_run, 1); | |
16088 | ||
7681d515 PM |
16089 | if (xdb_commands) |
16090 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
c906108c SS |
16091 | |
16092 | if (dbx_commands) | |
16093 | { | |
1bedd215 AC |
16094 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
16095 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
16096 | &stoplist, "stop ", 1, &cmdlist); |
16097 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 16098 | _("Break in function or address."), &stoplist); |
c5aa993b | 16099 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 16100 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
16101 | add_com ("status", class_info, breakpoints_info, _("\ |
16102 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
16103 | The \"Type\" column indicates one of:\n\ |
16104 | \tbreakpoint - normal breakpoint\n\ | |
16105 | \twatchpoint - watchpoint\n\ | |
16106 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
16107 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
16108 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
16109 | address and file/line number respectively.\n\ |
16110 | \n\ | |
16111 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16112 | are set to the address of the last breakpoint listed unless the command\n\ |
16113 | is prefixed with \"server \".\n\n\ | |
c906108c | 16114 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 16115 | breakpoint set.")); |
c906108c SS |
16116 | } |
16117 | ||
1bedd215 | 16118 | add_info ("breakpoints", breakpoints_info, _("\ |
e5a67952 | 16119 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
16120 | The \"Type\" column indicates one of:\n\ |
16121 | \tbreakpoint - normal breakpoint\n\ | |
16122 | \twatchpoint - watchpoint\n\ | |
16123 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
16124 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
16125 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
16126 | address and file/line number respectively.\n\ |
16127 | \n\ | |
16128 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16129 | are set to the address of the last breakpoint listed unless the command\n\ |
16130 | is prefixed with \"server \".\n\n\ | |
c906108c | 16131 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 16132 | breakpoint set.")); |
c906108c | 16133 | |
6b04bdb7 MS |
16134 | add_info_alias ("b", "breakpoints", 1); |
16135 | ||
c906108c | 16136 | if (xdb_commands) |
1bedd215 AC |
16137 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
16138 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
16139 | The \"Type\" column indicates one of:\n\ |
16140 | \tbreakpoint - normal breakpoint\n\ | |
16141 | \twatchpoint - watchpoint\n\ | |
16142 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
16143 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
16144 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
16145 | address and file/line number respectively.\n\ |
16146 | \n\ | |
16147 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16148 | are set to the address of the last breakpoint listed unless the command\n\ |
16149 | is prefixed with \"server \".\n\n\ | |
c906108c | 16150 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 16151 | breakpoint set.")); |
c906108c | 16152 | |
1a966eab AC |
16153 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
16154 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
16155 | The \"Type\" column indicates one of:\n\ |
16156 | \tbreakpoint - normal breakpoint\n\ | |
16157 | \twatchpoint - watchpoint\n\ | |
16158 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
16159 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
16160 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
16161 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
16162 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
16163 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
16164 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
16165 | address and file/line number respectively.\n\ |
16166 | \n\ | |
16167 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16168 | are set to the address of the last breakpoint listed unless the command\n\ |
16169 | is prefixed with \"server \".\n\n\ | |
c906108c | 16170 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 16171 | breakpoint set."), |
c906108c SS |
16172 | &maintenanceinfolist); |
16173 | ||
44feb3ce TT |
16174 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
16175 | Set catchpoints to catch events."), | |
16176 | &catch_cmdlist, "catch ", | |
16177 | 0/*allow-unknown*/, &cmdlist); | |
16178 | ||
16179 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
16180 | Set temporary catchpoints to catch events."), | |
16181 | &tcatch_cmdlist, "tcatch ", | |
16182 | 0/*allow-unknown*/, &cmdlist); | |
16183 | ||
16184 | /* Add catch and tcatch sub-commands. */ | |
16185 | add_catch_command ("catch", _("\ | |
88e7d25d | 16186 | Catch an exception, when caught."), |
44feb3ce | 16187 | catch_catch_command, |
a96d9b2e | 16188 | NULL, |
44feb3ce TT |
16189 | CATCH_PERMANENT, |
16190 | CATCH_TEMPORARY); | |
16191 | add_catch_command ("throw", _("\ | |
88e7d25d | 16192 | Catch an exception, when thrown."), |
44feb3ce | 16193 | catch_throw_command, |
a96d9b2e | 16194 | NULL, |
44feb3ce TT |
16195 | CATCH_PERMANENT, |
16196 | CATCH_TEMPORARY); | |
16197 | add_catch_command ("fork", _("Catch calls to fork."), | |
16198 | catch_fork_command_1, | |
a96d9b2e | 16199 | NULL, |
44feb3ce TT |
16200 | (void *) (uintptr_t) catch_fork_permanent, |
16201 | (void *) (uintptr_t) catch_fork_temporary); | |
16202 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
16203 | catch_fork_command_1, | |
a96d9b2e | 16204 | NULL, |
44feb3ce TT |
16205 | (void *) (uintptr_t) catch_vfork_permanent, |
16206 | (void *) (uintptr_t) catch_vfork_temporary); | |
16207 | add_catch_command ("exec", _("Catch calls to exec."), | |
16208 | catch_exec_command_1, | |
a96d9b2e SDJ |
16209 | NULL, |
16210 | CATCH_PERMANENT, | |
16211 | CATCH_TEMPORARY); | |
edcc5120 TT |
16212 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
16213 | Usage: catch load [REGEX]\n\ | |
16214 | If REGEX is given, only stop for libraries matching the regular expression."), | |
16215 | catch_load_command_1, | |
16216 | NULL, | |
16217 | CATCH_PERMANENT, | |
16218 | CATCH_TEMPORARY); | |
16219 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
16220 | Usage: catch unload [REGEX]\n\ | |
16221 | If REGEX is given, only stop for libraries matching the regular expression."), | |
16222 | catch_unload_command_1, | |
16223 | NULL, | |
16224 | CATCH_PERMANENT, | |
16225 | CATCH_TEMPORARY); | |
a96d9b2e SDJ |
16226 | add_catch_command ("syscall", _("\ |
16227 | Catch system calls by their names and/or numbers.\n\ | |
16228 | Arguments say which system calls to catch. If no arguments\n\ | |
16229 | are given, every system call will be caught.\n\ | |
16230 | Arguments, if given, should be one or more system call names\n\ | |
16231 | (if your system supports that), or system call numbers."), | |
16232 | catch_syscall_command_1, | |
16233 | catch_syscall_completer, | |
44feb3ce TT |
16234 | CATCH_PERMANENT, |
16235 | CATCH_TEMPORARY); | |
c5aa993b | 16236 | |
1bedd215 AC |
16237 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
16238 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 16239 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 16240 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16241 | an expression changes.\n\ |
16242 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16243 | the memory to which it refers.")); | |
65d12d83 | 16244 | set_cmd_completer (c, expression_completer); |
c906108c | 16245 | |
1bedd215 AC |
16246 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
16247 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 16248 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 16249 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16250 | an expression is read.\n\ |
16251 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16252 | the memory to which it refers.")); | |
65d12d83 | 16253 | set_cmd_completer (c, expression_completer); |
c906108c | 16254 | |
1bedd215 AC |
16255 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
16256 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 16257 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 16258 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16259 | an expression is either read or written.\n\ |
16260 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16261 | the memory to which it refers.")); | |
65d12d83 | 16262 | set_cmd_completer (c, expression_completer); |
c906108c | 16263 | |
d77f58be | 16264 | add_info ("watchpoints", watchpoints_info, _("\ |
e5a67952 | 16265 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 16266 | |
920d2a44 AC |
16267 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
16268 | respond to changes - contrary to the description. */ | |
85c07804 AC |
16269 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
16270 | &can_use_hw_watchpoints, _("\ | |
16271 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
16272 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
16273 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
16274 | such is available. (However, any hardware watchpoints that were\n\ | |
16275 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
16276 | hardware.)"), |
16277 | NULL, | |
920d2a44 | 16278 | show_can_use_hw_watchpoints, |
85c07804 | 16279 | &setlist, &showlist); |
c906108c SS |
16280 | |
16281 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 16282 | |
1042e4c0 SS |
16283 | /* Tracepoint manipulation commands. */ |
16284 | ||
16285 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
16286 | Set a tracepoint at specified line or function.\n\ | |
16287 | \n" | |
16288 | BREAK_ARGS_HELP ("trace") "\n\ | |
16289 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16290 | set_cmd_completer (c, location_completer); | |
16291 | ||
16292 | add_com_alias ("tp", "trace", class_alias, 0); | |
16293 | add_com_alias ("tr", "trace", class_alias, 1); | |
16294 | add_com_alias ("tra", "trace", class_alias, 1); | |
16295 | add_com_alias ("trac", "trace", class_alias, 1); | |
16296 | ||
7a697b8d SS |
16297 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
16298 | Set a fast tracepoint at specified line or function.\n\ | |
16299 | \n" | |
16300 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
16301 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16302 | set_cmd_completer (c, location_completer); | |
16303 | ||
0fb4aa4b PA |
16304 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
16305 | Set a static tracepoint at specified line, function or marker.\n\ | |
16306 | \n\ | |
16307 | strace [LOCATION] [if CONDITION]\n\ | |
16308 | LOCATION may be a line number, function name, \"*\" and an address,\n\ | |
16309 | or -m MARKER_ID.\n\ | |
16310 | If a line number is specified, probe the marker at start of code\n\ | |
16311 | for that line. If a function is specified, probe the marker at start\n\ | |
16312 | of code for that function. If an address is specified, probe the marker\n\ | |
16313 | at that exact address. If a marker id is specified, probe the marker\n\ | |
16314 | with that name. With no LOCATION, uses current execution address of\n\ | |
16315 | the selected stack frame.\n\ | |
16316 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ | |
16317 | This collects arbitrary user data passed in the probe point call to the\n\ | |
16318 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
16319 | by printing the $_sdata variable like any other convenience variable.\n\ | |
16320 | \n\ | |
16321 | CONDITION is a boolean expression.\n\ | |
16322 | \n\ | |
d41c0fc8 PA |
16323 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
16324 | conditions are different.\n\ | |
0fb4aa4b PA |
16325 | \n\ |
16326 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
16327 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16328 | set_cmd_completer (c, location_completer); | |
16329 | ||
1042e4c0 | 16330 | add_info ("tracepoints", tracepoints_info, _("\ |
e5a67952 | 16331 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
16332 | Convenience variable \"$tpnum\" contains the number of the\n\ |
16333 | last tracepoint set.")); | |
16334 | ||
16335 | add_info_alias ("tp", "tracepoints", 1); | |
16336 | ||
16337 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
16338 | Delete specified tracepoints.\n\ | |
16339 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16340 | No argument means delete all tracepoints."), | |
16341 | &deletelist); | |
7e20dfcd | 16342 | add_alias_cmd ("tr", "tracepoints", class_trace, 1, &deletelist); |
1042e4c0 SS |
16343 | |
16344 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
16345 | Disable specified tracepoints.\n\ | |
16346 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16347 | No argument means disable all tracepoints."), | |
16348 | &disablelist); | |
16349 | deprecate_cmd (c, "disable"); | |
16350 | ||
16351 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
16352 | Enable specified tracepoints.\n\ | |
16353 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16354 | No argument means enable all tracepoints."), | |
16355 | &enablelist); | |
16356 | deprecate_cmd (c, "enable"); | |
16357 | ||
16358 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
16359 | Set the passcount for a tracepoint.\n\ | |
16360 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
16361 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
16362 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
16363 | ||
6149aea9 PA |
16364 | add_prefix_cmd ("save", class_breakpoint, save_command, |
16365 | _("Save breakpoint definitions as a script."), | |
16366 | &save_cmdlist, "save ", | |
16367 | 0/*allow-unknown*/, &cmdlist); | |
16368 | ||
16369 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
16370 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 16371 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
16372 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
16373 | session to restore them."), | |
16374 | &save_cmdlist); | |
16375 | set_cmd_completer (c, filename_completer); | |
16376 | ||
16377 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 16378 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
16379 | Use the 'source' command in another debug session to restore them."), |
16380 | &save_cmdlist); | |
1042e4c0 SS |
16381 | set_cmd_completer (c, filename_completer); |
16382 | ||
6149aea9 PA |
16383 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
16384 | deprecate_cmd (c, "save tracepoints"); | |
16385 | ||
1bedd215 | 16386 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
16387 | Breakpoint specific settings\n\ |
16388 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 16389 | pending breakpoint behavior"), |
fa8d40ab JJ |
16390 | &breakpoint_set_cmdlist, "set breakpoint ", |
16391 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 16392 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
16393 | Breakpoint specific settings\n\ |
16394 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 16395 | pending breakpoint behavior"), |
fa8d40ab JJ |
16396 | &breakpoint_show_cmdlist, "show breakpoint ", |
16397 | 0/*allow-unknown*/, &showlist); | |
16398 | ||
7915a72c AC |
16399 | add_setshow_auto_boolean_cmd ("pending", no_class, |
16400 | &pending_break_support, _("\ | |
16401 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
16402 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
16403 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
16404 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
16405 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 16406 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 16407 | NULL, |
920d2a44 | 16408 | show_pending_break_support, |
6e1d7d6c AC |
16409 | &breakpoint_set_cmdlist, |
16410 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
16411 | |
16412 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
16413 | |
16414 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
16415 | &automatic_hardware_breakpoints, _("\ | |
16416 | Set automatic usage of hardware breakpoints."), _("\ | |
16417 | Show automatic usage of hardware breakpoints."), _("\ | |
16418 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
16419 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
16420 | a warning will be emitted for such breakpoints."), | |
16421 | NULL, | |
16422 | show_automatic_hardware_breakpoints, | |
16423 | &breakpoint_set_cmdlist, | |
16424 | &breakpoint_show_cmdlist); | |
74960c60 | 16425 | |
72d0e2c5 YQ |
16426 | add_setshow_auto_boolean_cmd ("always-inserted", class_support, |
16427 | &always_inserted_mode, _("\ | |
74960c60 VP |
16428 | Set mode for inserting breakpoints."), _("\ |
16429 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
16430 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
16431 | resumed, and removed when execution stops. When this mode is on,\n\ | |
16432 | breakpoints are inserted immediately and removed only when the user\n\ | |
16433 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
16434 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
16435 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
16436 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
16437 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
72d0e2c5 YQ |
16438 | NULL, |
16439 | &show_always_inserted_mode, | |
16440 | &breakpoint_set_cmdlist, | |
16441 | &breakpoint_show_cmdlist); | |
f1310107 | 16442 | |
b775012e LM |
16443 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
16444 | condition_evaluation_enums, | |
16445 | &condition_evaluation_mode_1, _("\ | |
16446 | Set mode of breakpoint condition evaluation."), _("\ | |
16447 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 16448 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
16449 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
16450 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
16451 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
16452 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
16453 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
16454 | be set to \"gdb\""), | |
16455 | &set_condition_evaluation_mode, | |
16456 | &show_condition_evaluation_mode, | |
16457 | &breakpoint_set_cmdlist, | |
16458 | &breakpoint_show_cmdlist); | |
16459 | ||
f1310107 TJB |
16460 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
16461 | Set a breakpoint for an address range.\n\ | |
16462 | break-range START-LOCATION, END-LOCATION\n\ | |
16463 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
16464 | LINENUM, for that line in the current file,\n\ | |
16465 | FILE:LINENUM, for that line in that file,\n\ | |
16466 | +OFFSET, for that number of lines after the current line\n\ | |
16467 | or the start of the range\n\ | |
16468 | FUNCTION, for the first line in that function,\n\ | |
16469 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
16470 | *ADDRESS, for the instruction at that address.\n\ | |
16471 | \n\ | |
16472 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
16473 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
16474 | range (including START-LOCATION and END-LOCATION).")); | |
16475 | ||
e7e0cddf SS |
16476 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
16477 | Set a dynamic printf at specified line or function.\n\ | |
16478 | dprintf location,format string,arg1,arg2,...\n\ | |
16479 | location may be a line number, function name, or \"*\" and an address.\n\ | |
16480 | If a line number is specified, break at start of code for that line.\n\ | |
16481 | If a function is specified, break at start of code for that function.\n\ | |
16482 | ")); | |
16483 | set_cmd_completer (c, location_completer); | |
16484 | ||
16485 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
16486 | dprintf_style_enums, &dprintf_style, _("\ | |
16487 | Set the style of usage for dynamic printf."), _("\ | |
16488 | Show the style of usage for dynamic printf."), _("\ | |
16489 | This setting chooses how GDB will do a dynamic printf.\n\ | |
16490 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
16491 | console, as with the \"printf\" command.\n\ | |
16492 | If the value is \"call\", the print is done by calling a function in your\n\ | |
16493 | program; by default printf(), but you can choose a different function or\n\ | |
16494 | output stream by setting dprintf-function and dprintf-channel."), | |
16495 | update_dprintf_commands, NULL, | |
16496 | &setlist, &showlist); | |
16497 | ||
16498 | dprintf_function = xstrdup ("printf"); | |
16499 | add_setshow_string_cmd ("dprintf-function", class_support, | |
16500 | &dprintf_function, _("\ | |
16501 | Set the function to use for dynamic printf"), _("\ | |
16502 | Show the function to use for dynamic printf"), NULL, | |
16503 | update_dprintf_commands, NULL, | |
16504 | &setlist, &showlist); | |
16505 | ||
16506 | dprintf_channel = xstrdup (""); | |
16507 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
16508 | &dprintf_channel, _("\ | |
16509 | Set the channel to use for dynamic printf"), _("\ | |
16510 | Show the channel to use for dynamic printf"), NULL, | |
16511 | update_dprintf_commands, NULL, | |
16512 | &setlist, &showlist); | |
16513 | ||
d3ce09f5 SS |
16514 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
16515 | &disconnected_dprintf, _("\ | |
16516 | Set whether dprintf continues after GDB disconnects."), _("\ | |
16517 | Show whether dprintf continues after GDB disconnects."), _("\ | |
16518 | Use this to let dprintf commands continue to hit and produce output\n\ | |
16519 | even if GDB disconnects or detaches from the target."), | |
16520 | NULL, | |
16521 | NULL, | |
16522 | &setlist, &showlist); | |
16523 | ||
16524 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
16525 | agent-printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
16526 | (target agent only) This is useful for formatted output in user-defined commands.")); | |
16527 | ||
765dc015 | 16528 | automatic_hardware_breakpoints = 1; |
f3b1572e PA |
16529 | |
16530 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
c906108c | 16531 | } |