Commit | Line | Data |
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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
28e7fd62 | 3 | Copyright (C) 1986-2013 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
a6d9a66e | 21 | #include "arch-utils.h" |
c906108c | 22 | #include <ctype.h> |
776592bf | 23 | #include "hashtab.h" |
c906108c SS |
24 | #include "symtab.h" |
25 | #include "frame.h" | |
26 | #include "breakpoint.h" | |
1042e4c0 | 27 | #include "tracepoint.h" |
c906108c SS |
28 | #include "gdbtypes.h" |
29 | #include "expression.h" | |
30 | #include "gdbcore.h" | |
31 | #include "gdbcmd.h" | |
32 | #include "value.h" | |
33 | #include "command.h" | |
34 | #include "inferior.h" | |
35 | #include "gdbthread.h" | |
36 | #include "target.h" | |
37 | #include "language.h" | |
38 | #include "gdb_string.h" | |
50f182aa | 39 | #include "gdb-demangle.h" |
0ba1096a | 40 | #include "filenames.h" |
c906108c SS |
41 | #include "annotate.h" |
42 | #include "symfile.h" | |
43 | #include "objfiles.h" | |
0378c332 | 44 | #include "source.h" |
c5f0f3d0 | 45 | #include "linespec.h" |
c94fdfd0 | 46 | #include "completer.h" |
5b7f31a4 | 47 | #include "gdb.h" |
8b93c638 | 48 | #include "ui-out.h" |
e1507482 | 49 | #include "cli/cli-script.h" |
0225421b | 50 | #include "gdb_assert.h" |
fe898f56 | 51 | #include "block.h" |
a77053c2 | 52 | #include "solib.h" |
84acb35a JJ |
53 | #include "solist.h" |
54 | #include "observer.h" | |
60250e8b | 55 | #include "exceptions.h" |
765dc015 | 56 | #include "memattr.h" |
f7f9143b | 57 | #include "ada-lang.h" |
d1aa2f50 | 58 | #include "top.h" |
79a45b7d | 59 | #include "valprint.h" |
4efc6507 | 60 | #include "jit.h" |
a96d9b2e | 61 | #include "xml-syscall.h" |
65d79d4b | 62 | #include "parser-defs.h" |
55aa24fb SDJ |
63 | #include "gdb_regex.h" |
64 | #include "probe.h" | |
e9cafbcc | 65 | #include "cli/cli-utils.h" |
be34f849 | 66 | #include "continuations.h" |
1bfeeb0f JL |
67 | #include "stack.h" |
68 | #include "skip.h" | |
edcc5120 | 69 | #include "gdb_regex.h" |
b775012e | 70 | #include "ax-gdb.h" |
e2e4d78b | 71 | #include "dummy-frame.h" |
c906108c | 72 | |
d3ce09f5 SS |
73 | #include "format.h" |
74 | ||
1042e4c0 SS |
75 | /* readline include files */ |
76 | #include "readline/readline.h" | |
77 | #include "readline/history.h" | |
78 | ||
79 | /* readline defines this. */ | |
80 | #undef savestring | |
81 | ||
034dad6f | 82 | #include "mi/mi-common.h" |
7371cf6d | 83 | #include "python/python.h" |
104c1213 | 84 | |
e7e8980f YQ |
85 | /* Enums for exception-handling support. */ |
86 | enum exception_event_kind | |
87 | { | |
88 | EX_EVENT_THROW, | |
89 | EX_EVENT_CATCH | |
90 | }; | |
91 | ||
4a64f543 | 92 | /* Prototypes for local functions. */ |
c906108c | 93 | |
a14ed312 | 94 | static void enable_delete_command (char *, int); |
c906108c | 95 | |
a14ed312 | 96 | static void enable_once_command (char *, int); |
c906108c | 97 | |
816338b5 SS |
98 | static void enable_count_command (char *, int); |
99 | ||
a14ed312 | 100 | static void disable_command (char *, int); |
c906108c | 101 | |
a14ed312 | 102 | static void enable_command (char *, int); |
c906108c | 103 | |
95a42b64 TT |
104 | static void map_breakpoint_numbers (char *, void (*) (struct breakpoint *, |
105 | void *), | |
106 | void *); | |
c906108c | 107 | |
a14ed312 | 108 | static void ignore_command (char *, int); |
c906108c | 109 | |
4efb68b1 | 110 | static int breakpoint_re_set_one (void *); |
c906108c | 111 | |
348d480f PA |
112 | static void breakpoint_re_set_default (struct breakpoint *); |
113 | ||
983af33b SDJ |
114 | static void create_sals_from_address_default (char **, |
115 | struct linespec_result *, | |
116 | enum bptype, char *, | |
117 | char **); | |
118 | ||
119 | static void create_breakpoints_sal_default (struct gdbarch *, | |
120 | struct linespec_result *, | |
121 | struct linespec_sals *, | |
e7e0cddf | 122 | char *, char *, enum bptype, |
983af33b SDJ |
123 | enum bpdisp, int, int, |
124 | int, | |
125 | const struct breakpoint_ops *, | |
44f238bb | 126 | int, int, int, unsigned); |
983af33b SDJ |
127 | |
128 | static void decode_linespec_default (struct breakpoint *, char **, | |
129 | struct symtabs_and_lines *); | |
130 | ||
a14ed312 | 131 | static void clear_command (char *, int); |
c906108c | 132 | |
a14ed312 | 133 | static void catch_command (char *, int); |
c906108c | 134 | |
a9634178 | 135 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 136 | |
98deb0da | 137 | static void break_command_1 (char *, int, int); |
c906108c | 138 | |
a14ed312 | 139 | static void mention (struct breakpoint *); |
c906108c | 140 | |
348d480f PA |
141 | static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *, |
142 | enum bptype, | |
c0a91b2b | 143 | const struct breakpoint_ops *); |
3742cc8b YQ |
144 | static struct bp_location *add_location_to_breakpoint (struct breakpoint *, |
145 | const struct symtab_and_line *); | |
146 | ||
4a64f543 MS |
147 | /* This function is used in gdbtk sources and thus can not be made |
148 | static. */ | |
63c252f8 | 149 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
348d480f | 150 | struct symtab_and_line, |
c0a91b2b TT |
151 | enum bptype, |
152 | const struct breakpoint_ops *); | |
c906108c | 153 | |
06edf0c0 PA |
154 | static struct breakpoint * |
155 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
156 | enum bptype type, | |
c0a91b2b | 157 | const struct breakpoint_ops *ops); |
06edf0c0 | 158 | |
76897487 KB |
159 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
160 | ||
a6d9a66e UW |
161 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
162 | CORE_ADDR bpaddr, | |
88f7da05 | 163 | enum bptype bptype); |
76897487 | 164 | |
6c95b8df PA |
165 | static void describe_other_breakpoints (struct gdbarch *, |
166 | struct program_space *, CORE_ADDR, | |
5af949e3 | 167 | struct obj_section *, int); |
c906108c | 168 | |
6c95b8df PA |
169 | static int breakpoint_address_match (struct address_space *aspace1, |
170 | CORE_ADDR addr1, | |
171 | struct address_space *aspace2, | |
172 | CORE_ADDR addr2); | |
173 | ||
85d721b8 PA |
174 | static int watchpoint_locations_match (struct bp_location *loc1, |
175 | struct bp_location *loc2); | |
176 | ||
f1310107 TJB |
177 | static int breakpoint_location_address_match (struct bp_location *bl, |
178 | struct address_space *aspace, | |
179 | CORE_ADDR addr); | |
180 | ||
a14ed312 | 181 | static void breakpoints_info (char *, int); |
c906108c | 182 | |
d77f58be SS |
183 | static void watchpoints_info (char *, int); |
184 | ||
e5a67952 MS |
185 | static int breakpoint_1 (char *, int, |
186 | int (*) (const struct breakpoint *)); | |
c906108c | 187 | |
4efb68b1 | 188 | static int breakpoint_cond_eval (void *); |
c906108c | 189 | |
4efb68b1 | 190 | static void cleanup_executing_breakpoints (void *); |
c906108c | 191 | |
a14ed312 | 192 | static void commands_command (char *, int); |
c906108c | 193 | |
a14ed312 | 194 | static void condition_command (char *, int); |
c906108c | 195 | |
c5aa993b JM |
196 | typedef enum |
197 | { | |
198 | mark_inserted, | |
199 | mark_uninserted | |
200 | } | |
201 | insertion_state_t; | |
c906108c | 202 | |
0bde7532 | 203 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
6c95b8df | 204 | static int remove_breakpoint_1 (struct bp_location *, insertion_state_t); |
c906108c | 205 | |
e514a9d6 | 206 | static enum print_stop_action print_bp_stop_message (bpstat bs); |
c906108c | 207 | |
4efb68b1 | 208 | static int watchpoint_check (void *); |
c906108c | 209 | |
a14ed312 | 210 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 211 | |
a14ed312 | 212 | static int hw_breakpoint_used_count (void); |
c906108c | 213 | |
a1398e0c PA |
214 | static int hw_watchpoint_use_count (struct breakpoint *); |
215 | ||
216 | static int hw_watchpoint_used_count_others (struct breakpoint *except, | |
217 | enum bptype type, | |
218 | int *other_type_used); | |
c906108c | 219 | |
a14ed312 | 220 | static void hbreak_command (char *, int); |
c906108c | 221 | |
a14ed312 | 222 | static void thbreak_command (char *, int); |
c906108c | 223 | |
816338b5 SS |
224 | static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp, |
225 | int count); | |
c906108c | 226 | |
a14ed312 | 227 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 228 | |
a14ed312 | 229 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 230 | |
a14ed312 | 231 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 232 | |
a14ed312 | 233 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 234 | |
d85310f7 MS |
235 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
236 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 237 | |
a14ed312 | 238 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 239 | |
d03285ec UW |
240 | static void detach_single_step_breakpoints (void); |
241 | ||
6c95b8df PA |
242 | static int single_step_breakpoint_inserted_here_p (struct address_space *, |
243 | CORE_ADDR pc); | |
1aafd4da | 244 | |
fe3f5fa8 | 245 | static void free_bp_location (struct bp_location *loc); |
f431efe5 PA |
246 | static void incref_bp_location (struct bp_location *loc); |
247 | static void decref_bp_location (struct bp_location **loc); | |
fe3f5fa8 | 248 | |
39d61571 | 249 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 250 | |
b60e7edf | 251 | static void update_global_location_list (int); |
a5606eee | 252 | |
b60e7edf | 253 | static void update_global_location_list_nothrow (int); |
74960c60 | 254 | |
d77f58be | 255 | static int is_hardware_watchpoint (const struct breakpoint *bpt); |
74960c60 VP |
256 | |
257 | static void insert_breakpoint_locations (void); | |
a5606eee | 258 | |
a96d9b2e SDJ |
259 | static int syscall_catchpoint_p (struct breakpoint *b); |
260 | ||
1042e4c0 SS |
261 | static void tracepoints_info (char *, int); |
262 | ||
263 | static void delete_trace_command (char *, int); | |
264 | ||
265 | static void enable_trace_command (char *, int); | |
266 | ||
267 | static void disable_trace_command (char *, int); | |
268 | ||
269 | static void trace_pass_command (char *, int); | |
270 | ||
558a9d82 YQ |
271 | static void set_tracepoint_count (int num); |
272 | ||
9c06b0b4 TJB |
273 | static int is_masked_watchpoint (const struct breakpoint *b); |
274 | ||
b775012e LM |
275 | static struct bp_location **get_first_locp_gte_addr (CORE_ADDR address); |
276 | ||
983af33b SDJ |
277 | /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero |
278 | otherwise. */ | |
279 | ||
280 | static int strace_marker_p (struct breakpoint *b); | |
0fb4aa4b | 281 | |
2060206e PA |
282 | /* The abstract base class all breakpoint_ops structures inherit |
283 | from. */ | |
ab04a2af | 284 | struct breakpoint_ops base_breakpoint_ops; |
2060206e PA |
285 | |
286 | /* The breakpoint_ops structure to be inherited by all breakpoint_ops | |
287 | that are implemented on top of software or hardware breakpoints | |
288 | (user breakpoints, internal and momentary breakpoints, etc.). */ | |
289 | static struct breakpoint_ops bkpt_base_breakpoint_ops; | |
290 | ||
291 | /* Internal breakpoints class type. */ | |
06edf0c0 | 292 | static struct breakpoint_ops internal_breakpoint_ops; |
2060206e PA |
293 | |
294 | /* Momentary breakpoints class type. */ | |
06edf0c0 PA |
295 | static struct breakpoint_ops momentary_breakpoint_ops; |
296 | ||
e2e4d78b JK |
297 | /* Momentary breakpoints for bp_longjmp and bp_exception class type. */ |
298 | static struct breakpoint_ops longjmp_breakpoint_ops; | |
299 | ||
2060206e PA |
300 | /* The breakpoint_ops structure to be used in regular user created |
301 | breakpoints. */ | |
302 | struct breakpoint_ops bkpt_breakpoint_ops; | |
303 | ||
55aa24fb SDJ |
304 | /* Breakpoints set on probes. */ |
305 | static struct breakpoint_ops bkpt_probe_breakpoint_ops; | |
306 | ||
e7e0cddf SS |
307 | /* Dynamic printf class type. */ |
308 | static struct breakpoint_ops dprintf_breakpoint_ops; | |
309 | ||
d3ce09f5 SS |
310 | /* The style in which to perform a dynamic printf. This is a user |
311 | option because different output options have different tradeoffs; | |
312 | if GDB does the printing, there is better error handling if there | |
313 | is a problem with any of the arguments, but using an inferior | |
314 | function lets you have special-purpose printers and sending of | |
315 | output to the same place as compiled-in print functions. */ | |
316 | ||
317 | static const char dprintf_style_gdb[] = "gdb"; | |
318 | static const char dprintf_style_call[] = "call"; | |
319 | static const char dprintf_style_agent[] = "agent"; | |
320 | static const char *const dprintf_style_enums[] = { | |
321 | dprintf_style_gdb, | |
322 | dprintf_style_call, | |
323 | dprintf_style_agent, | |
324 | NULL | |
325 | }; | |
326 | static const char *dprintf_style = dprintf_style_gdb; | |
327 | ||
328 | /* The function to use for dynamic printf if the preferred style is to | |
329 | call into the inferior. The value is simply a string that is | |
330 | copied into the command, so it can be anything that GDB can | |
331 | evaluate to a callable address, not necessarily a function name. */ | |
332 | ||
333 | static char *dprintf_function = ""; | |
334 | ||
335 | /* The channel to use for dynamic printf if the preferred style is to | |
336 | call into the inferior; if a nonempty string, it will be passed to | |
337 | the call as the first argument, with the format string as the | |
338 | second. As with the dprintf function, this can be anything that | |
339 | GDB knows how to evaluate, so in addition to common choices like | |
340 | "stderr", this could be an app-specific expression like | |
341 | "mystreams[curlogger]". */ | |
342 | ||
343 | static char *dprintf_channel = ""; | |
344 | ||
345 | /* True if dprintf commands should continue to operate even if GDB | |
346 | has disconnected. */ | |
347 | static int disconnected_dprintf = 1; | |
348 | ||
5cea2a26 PA |
349 | /* A reference-counted struct command_line. This lets multiple |
350 | breakpoints share a single command list. */ | |
351 | struct counted_command_line | |
352 | { | |
353 | /* The reference count. */ | |
354 | int refc; | |
355 | ||
356 | /* The command list. */ | |
357 | struct command_line *commands; | |
358 | }; | |
359 | ||
360 | struct command_line * | |
361 | breakpoint_commands (struct breakpoint *b) | |
362 | { | |
363 | return b->commands ? b->commands->commands : NULL; | |
364 | } | |
3daf8fe5 | 365 | |
f3b1572e PA |
366 | /* Flag indicating that a command has proceeded the inferior past the |
367 | current breakpoint. */ | |
368 | ||
369 | static int breakpoint_proceeded; | |
370 | ||
956a9fb9 | 371 | const char * |
2cec12e5 AR |
372 | bpdisp_text (enum bpdisp disp) |
373 | { | |
4a64f543 MS |
374 | /* NOTE: the following values are a part of MI protocol and |
375 | represent values of 'disp' field returned when inferior stops at | |
376 | a breakpoint. */ | |
bc043ef3 | 377 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 378 | |
2cec12e5 AR |
379 | return bpdisps[(int) disp]; |
380 | } | |
c906108c | 381 | |
4a64f543 | 382 | /* Prototypes for exported functions. */ |
c906108c | 383 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 384 | if such is available. */ |
c906108c SS |
385 | static int can_use_hw_watchpoints; |
386 | ||
920d2a44 AC |
387 | static void |
388 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
389 | struct cmd_list_element *c, | |
390 | const char *value) | |
391 | { | |
3e43a32a MS |
392 | fprintf_filtered (file, |
393 | _("Debugger's willingness to use " | |
394 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
395 | value); |
396 | } | |
397 | ||
fa8d40ab JJ |
398 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
399 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 400 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
401 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
402 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
403 | static void |
404 | show_pending_break_support (struct ui_file *file, int from_tty, | |
405 | struct cmd_list_element *c, | |
406 | const char *value) | |
407 | { | |
3e43a32a MS |
408 | fprintf_filtered (file, |
409 | _("Debugger's behavior regarding " | |
410 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
411 | value); |
412 | } | |
fa8d40ab | 413 | |
765dc015 | 414 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 415 | set with "break" but falling in read-only memory. |
765dc015 VP |
416 | If 0, gdb will warn about such breakpoints, but won't automatically |
417 | use hardware breakpoints. */ | |
418 | static int automatic_hardware_breakpoints; | |
419 | static void | |
420 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
421 | struct cmd_list_element *c, | |
422 | const char *value) | |
423 | { | |
3e43a32a MS |
424 | fprintf_filtered (file, |
425 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
426 | value); |
427 | } | |
428 | ||
33e5cbd6 PA |
429 | /* If on, gdb will keep breakpoints inserted even as inferior is |
430 | stopped, and immediately insert any new breakpoints. If off, gdb | |
431 | will insert breakpoints into inferior only when resuming it, and | |
432 | will remove breakpoints upon stop. If auto, GDB will behave as ON | |
433 | if in non-stop mode, and as OFF if all-stop mode.*/ | |
434 | ||
72d0e2c5 YQ |
435 | static enum auto_boolean always_inserted_mode = AUTO_BOOLEAN_AUTO; |
436 | ||
33e5cbd6 | 437 | static void |
74960c60 | 438 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 439 | struct cmd_list_element *c, const char *value) |
74960c60 | 440 | { |
72d0e2c5 | 441 | if (always_inserted_mode == AUTO_BOOLEAN_AUTO) |
3e43a32a MS |
442 | fprintf_filtered (file, |
443 | _("Always inserted breakpoint " | |
444 | "mode is %s (currently %s).\n"), | |
33e5cbd6 PA |
445 | value, |
446 | breakpoints_always_inserted_mode () ? "on" : "off"); | |
447 | else | |
3e43a32a MS |
448 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
449 | value); | |
74960c60 VP |
450 | } |
451 | ||
33e5cbd6 PA |
452 | int |
453 | breakpoints_always_inserted_mode (void) | |
454 | { | |
72d0e2c5 YQ |
455 | return (always_inserted_mode == AUTO_BOOLEAN_TRUE |
456 | || (always_inserted_mode == AUTO_BOOLEAN_AUTO && non_stop)); | |
33e5cbd6 | 457 | } |
765dc015 | 458 | |
b775012e LM |
459 | static const char condition_evaluation_both[] = "host or target"; |
460 | ||
461 | /* Modes for breakpoint condition evaluation. */ | |
462 | static const char condition_evaluation_auto[] = "auto"; | |
463 | static const char condition_evaluation_host[] = "host"; | |
464 | static const char condition_evaluation_target[] = "target"; | |
465 | static const char *const condition_evaluation_enums[] = { | |
466 | condition_evaluation_auto, | |
467 | condition_evaluation_host, | |
468 | condition_evaluation_target, | |
469 | NULL | |
470 | }; | |
471 | ||
472 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
473 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
474 | ||
475 | /* Global that we use to display information to the user (gets its value from | |
476 | condition_evaluation_mode_1. */ | |
477 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
478 | ||
479 | /* Translate a condition evaluation mode MODE into either "host" | |
480 | or "target". This is used mostly to translate from "auto" to the | |
481 | real setting that is being used. It returns the translated | |
482 | evaluation mode. */ | |
483 | ||
484 | static const char * | |
485 | translate_condition_evaluation_mode (const char *mode) | |
486 | { | |
487 | if (mode == condition_evaluation_auto) | |
488 | { | |
489 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
490 | return condition_evaluation_target; | |
491 | else | |
492 | return condition_evaluation_host; | |
493 | } | |
494 | else | |
495 | return mode; | |
496 | } | |
497 | ||
498 | /* Discovers what condition_evaluation_auto translates to. */ | |
499 | ||
500 | static const char * | |
501 | breakpoint_condition_evaluation_mode (void) | |
502 | { | |
503 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
504 | } | |
505 | ||
506 | /* Return true if GDB should evaluate breakpoint conditions or false | |
507 | otherwise. */ | |
508 | ||
509 | static int | |
510 | gdb_evaluates_breakpoint_condition_p (void) | |
511 | { | |
512 | const char *mode = breakpoint_condition_evaluation_mode (); | |
513 | ||
514 | return (mode == condition_evaluation_host); | |
515 | } | |
516 | ||
a14ed312 | 517 | void _initialize_breakpoint (void); |
c906108c | 518 | |
c906108c SS |
519 | /* Are we executing breakpoint commands? */ |
520 | static int executing_breakpoint_commands; | |
521 | ||
c02f5703 MS |
522 | /* Are overlay event breakpoints enabled? */ |
523 | static int overlay_events_enabled; | |
524 | ||
e09342b5 TJB |
525 | /* See description in breakpoint.h. */ |
526 | int target_exact_watchpoints = 0; | |
527 | ||
c906108c | 528 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 529 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 530 | current breakpoint. */ |
c906108c | 531 | |
5c44784c | 532 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 533 | |
5c44784c JM |
534 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
535 | for (B = breakpoint_chain; \ | |
536 | B ? (TMP=B->next, 1): 0; \ | |
537 | B = TMP) | |
c906108c | 538 | |
4a64f543 MS |
539 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
540 | not provided so update_global_location_list must not be called | |
541 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 542 | |
876fa593 JK |
543 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
544 | for (BP_TMP = bp_location; \ | |
545 | BP_TMP < bp_location + bp_location_count && (B = *BP_TMP); \ | |
546 | BP_TMP++) | |
7cc221ef | 547 | |
b775012e LM |
548 | /* Iterates through locations with address ADDRESS for the currently selected |
549 | program space. BP_LOCP_TMP points to each object. BP_LOCP_START points | |
550 | to where the loop should start from. | |
551 | If BP_LOCP_START is a NULL pointer, the macro automatically seeks the | |
552 | appropriate location to start with. */ | |
553 | ||
554 | #define ALL_BP_LOCATIONS_AT_ADDR(BP_LOCP_TMP, BP_LOCP_START, ADDRESS) \ | |
555 | for (BP_LOCP_START = BP_LOCP_START == NULL ? get_first_locp_gte_addr (ADDRESS) : BP_LOCP_START, \ | |
556 | BP_LOCP_TMP = BP_LOCP_START; \ | |
557 | BP_LOCP_START \ | |
558 | && (BP_LOCP_TMP < bp_location + bp_location_count \ | |
559 | && (*BP_LOCP_TMP)->address == ADDRESS); \ | |
560 | BP_LOCP_TMP++) | |
561 | ||
1042e4c0 SS |
562 | /* Iterator for tracepoints only. */ |
563 | ||
564 | #define ALL_TRACEPOINTS(B) \ | |
565 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 566 | if (is_tracepoint (B)) |
1042e4c0 | 567 | |
7cc221ef | 568 | /* Chains of all breakpoints defined. */ |
c906108c SS |
569 | |
570 | struct breakpoint *breakpoint_chain; | |
571 | ||
876fa593 JK |
572 | /* Array is sorted by bp_location_compare - primarily by the ADDRESS. */ |
573 | ||
574 | static struct bp_location **bp_location; | |
575 | ||
576 | /* Number of elements of BP_LOCATION. */ | |
577 | ||
578 | static unsigned bp_location_count; | |
579 | ||
4a64f543 MS |
580 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
581 | ADDRESS for the current elements of BP_LOCATION which get a valid | |
582 | result from bp_location_has_shadow. You can use it for roughly | |
583 | limiting the subrange of BP_LOCATION to scan for shadow bytes for | |
584 | an address you need to read. */ | |
876fa593 JK |
585 | |
586 | static CORE_ADDR bp_location_placed_address_before_address_max; | |
587 | ||
4a64f543 MS |
588 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
589 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
590 | BP_LOCATION which get a valid result from bp_location_has_shadow. | |
591 | You can use it for roughly limiting the subrange of BP_LOCATION to | |
592 | scan for shadow bytes for an address you need to read. */ | |
876fa593 JK |
593 | |
594 | static CORE_ADDR bp_location_shadow_len_after_address_max; | |
7cc221ef | 595 | |
4a64f543 MS |
596 | /* The locations that no longer correspond to any breakpoint, unlinked |
597 | from bp_location array, but for which a hit may still be reported | |
598 | by a target. */ | |
20874c92 VP |
599 | VEC(bp_location_p) *moribund_locations = NULL; |
600 | ||
c906108c SS |
601 | /* Number of last breakpoint made. */ |
602 | ||
95a42b64 TT |
603 | static int breakpoint_count; |
604 | ||
86b17b60 PA |
605 | /* The value of `breakpoint_count' before the last command that |
606 | created breakpoints. If the last (break-like) command created more | |
607 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
608 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
609 | static int prev_breakpoint_count; | |
c906108c | 610 | |
1042e4c0 SS |
611 | /* Number of last tracepoint made. */ |
612 | ||
95a42b64 | 613 | static int tracepoint_count; |
1042e4c0 | 614 | |
6149aea9 PA |
615 | static struct cmd_list_element *breakpoint_set_cmdlist; |
616 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 617 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 618 | |
468d015d JJ |
619 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
620 | static int | |
621 | breakpoint_enabled (struct breakpoint *b) | |
622 | { | |
0d381245 | 623 | return (b->enable_state == bp_enabled); |
468d015d JJ |
624 | } |
625 | ||
c906108c SS |
626 | /* Set breakpoint count to NUM. */ |
627 | ||
95a42b64 | 628 | static void |
fba45db2 | 629 | set_breakpoint_count (int num) |
c906108c | 630 | { |
86b17b60 | 631 | prev_breakpoint_count = breakpoint_count; |
c906108c | 632 | breakpoint_count = num; |
4fa62494 | 633 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
634 | } |
635 | ||
86b17b60 PA |
636 | /* Used by `start_rbreak_breakpoints' below, to record the current |
637 | breakpoint count before "rbreak" creates any breakpoint. */ | |
638 | static int rbreak_start_breakpoint_count; | |
639 | ||
95a42b64 TT |
640 | /* Called at the start an "rbreak" command to record the first |
641 | breakpoint made. */ | |
86b17b60 | 642 | |
95a42b64 TT |
643 | void |
644 | start_rbreak_breakpoints (void) | |
645 | { | |
86b17b60 | 646 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
647 | } |
648 | ||
649 | /* Called at the end of an "rbreak" command to record the last | |
650 | breakpoint made. */ | |
86b17b60 | 651 | |
95a42b64 TT |
652 | void |
653 | end_rbreak_breakpoints (void) | |
654 | { | |
86b17b60 | 655 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
656 | } |
657 | ||
4a64f543 | 658 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
659 | |
660 | void | |
fba45db2 | 661 | clear_breakpoint_hit_counts (void) |
c906108c SS |
662 | { |
663 | struct breakpoint *b; | |
664 | ||
665 | ALL_BREAKPOINTS (b) | |
666 | b->hit_count = 0; | |
667 | } | |
668 | ||
9add0f1b TT |
669 | /* Allocate a new counted_command_line with reference count of 1. |
670 | The new structure owns COMMANDS. */ | |
671 | ||
672 | static struct counted_command_line * | |
673 | alloc_counted_command_line (struct command_line *commands) | |
674 | { | |
675 | struct counted_command_line *result | |
676 | = xmalloc (sizeof (struct counted_command_line)); | |
cc59ec59 | 677 | |
9add0f1b TT |
678 | result->refc = 1; |
679 | result->commands = commands; | |
680 | return result; | |
681 | } | |
682 | ||
683 | /* Increment reference count. This does nothing if CMD is NULL. */ | |
684 | ||
685 | static void | |
686 | incref_counted_command_line (struct counted_command_line *cmd) | |
687 | { | |
688 | if (cmd) | |
689 | ++cmd->refc; | |
690 | } | |
691 | ||
692 | /* Decrement reference count. If the reference count reaches 0, | |
693 | destroy the counted_command_line. Sets *CMDP to NULL. This does | |
694 | nothing if *CMDP is NULL. */ | |
695 | ||
696 | static void | |
697 | decref_counted_command_line (struct counted_command_line **cmdp) | |
698 | { | |
699 | if (*cmdp) | |
700 | { | |
701 | if (--(*cmdp)->refc == 0) | |
702 | { | |
703 | free_command_lines (&(*cmdp)->commands); | |
704 | xfree (*cmdp); | |
705 | } | |
706 | *cmdp = NULL; | |
707 | } | |
708 | } | |
709 | ||
710 | /* A cleanup function that calls decref_counted_command_line. */ | |
711 | ||
712 | static void | |
713 | do_cleanup_counted_command_line (void *arg) | |
714 | { | |
715 | decref_counted_command_line (arg); | |
716 | } | |
717 | ||
718 | /* Create a cleanup that calls decref_counted_command_line on the | |
719 | argument. */ | |
720 | ||
721 | static struct cleanup * | |
722 | make_cleanup_decref_counted_command_line (struct counted_command_line **cmdp) | |
723 | { | |
724 | return make_cleanup (do_cleanup_counted_command_line, cmdp); | |
725 | } | |
726 | ||
c906108c | 727 | \f |
48cb2d85 VP |
728 | /* Return the breakpoint with the specified number, or NULL |
729 | if the number does not refer to an existing breakpoint. */ | |
730 | ||
731 | struct breakpoint * | |
732 | get_breakpoint (int num) | |
733 | { | |
734 | struct breakpoint *b; | |
735 | ||
736 | ALL_BREAKPOINTS (b) | |
737 | if (b->number == num) | |
738 | return b; | |
739 | ||
740 | return NULL; | |
741 | } | |
5c44784c | 742 | |
c906108c | 743 | \f |
adc36818 | 744 | |
b775012e LM |
745 | /* Mark locations as "conditions have changed" in case the target supports |
746 | evaluating conditions on its side. */ | |
747 | ||
748 | static void | |
749 | mark_breakpoint_modified (struct breakpoint *b) | |
750 | { | |
751 | struct bp_location *loc; | |
752 | ||
753 | /* This is only meaningful if the target is | |
754 | evaluating conditions and if the user has | |
755 | opted for condition evaluation on the target's | |
756 | side. */ | |
757 | if (gdb_evaluates_breakpoint_condition_p () | |
758 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
759 | return; | |
760 | ||
761 | if (!is_breakpoint (b)) | |
762 | return; | |
763 | ||
764 | for (loc = b->loc; loc; loc = loc->next) | |
765 | loc->condition_changed = condition_modified; | |
766 | } | |
767 | ||
768 | /* Mark location as "conditions have changed" in case the target supports | |
769 | evaluating conditions on its side. */ | |
770 | ||
771 | static void | |
772 | mark_breakpoint_location_modified (struct bp_location *loc) | |
773 | { | |
774 | /* This is only meaningful if the target is | |
775 | evaluating conditions and if the user has | |
776 | opted for condition evaluation on the target's | |
777 | side. */ | |
778 | if (gdb_evaluates_breakpoint_condition_p () | |
779 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
780 | ||
781 | return; | |
782 | ||
783 | if (!is_breakpoint (loc->owner)) | |
784 | return; | |
785 | ||
786 | loc->condition_changed = condition_modified; | |
787 | } | |
788 | ||
789 | /* Sets the condition-evaluation mode using the static global | |
790 | condition_evaluation_mode. */ | |
791 | ||
792 | static void | |
793 | set_condition_evaluation_mode (char *args, int from_tty, | |
794 | struct cmd_list_element *c) | |
795 | { | |
b775012e LM |
796 | const char *old_mode, *new_mode; |
797 | ||
798 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
799 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
800 | { | |
801 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
802 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
803 | "Using host evaluation mode instead.")); | |
804 | return; | |
805 | } | |
806 | ||
807 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
808 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
809 | ||
abf1152a JK |
810 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
811 | settings was "auto". */ | |
812 | condition_evaluation_mode = condition_evaluation_mode_1; | |
813 | ||
b775012e LM |
814 | /* Only update the mode if the user picked a different one. */ |
815 | if (new_mode != old_mode) | |
816 | { | |
817 | struct bp_location *loc, **loc_tmp; | |
818 | /* If the user switched to a different evaluation mode, we | |
819 | need to synch the changes with the target as follows: | |
820 | ||
821 | "host" -> "target": Send all (valid) conditions to the target. | |
822 | "target" -> "host": Remove all the conditions from the target. | |
823 | */ | |
824 | ||
b775012e LM |
825 | if (new_mode == condition_evaluation_target) |
826 | { | |
827 | /* Mark everything modified and synch conditions with the | |
828 | target. */ | |
829 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
830 | mark_breakpoint_location_modified (loc); | |
831 | } | |
832 | else | |
833 | { | |
834 | /* Manually mark non-duplicate locations to synch conditions | |
835 | with the target. We do this to remove all the conditions the | |
836 | target knows about. */ | |
837 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
838 | if (is_breakpoint (loc->owner) && loc->inserted) | |
839 | loc->needs_update = 1; | |
840 | } | |
841 | ||
842 | /* Do the update. */ | |
843 | update_global_location_list (1); | |
844 | } | |
845 | ||
846 | return; | |
847 | } | |
848 | ||
849 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
850 | what "auto" is translating to. */ | |
851 | ||
852 | static void | |
853 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
854 | struct cmd_list_element *c, const char *value) | |
855 | { | |
856 | if (condition_evaluation_mode == condition_evaluation_auto) | |
857 | fprintf_filtered (file, | |
858 | _("Breakpoint condition evaluation " | |
859 | "mode is %s (currently %s).\n"), | |
860 | value, | |
861 | breakpoint_condition_evaluation_mode ()); | |
862 | else | |
863 | fprintf_filtered (file, _("Breakpoint condition evaluation mode is %s.\n"), | |
864 | value); | |
865 | } | |
866 | ||
867 | /* A comparison function for bp_location AP and BP that is used by | |
868 | bsearch. This comparison function only cares about addresses, unlike | |
869 | the more general bp_location_compare function. */ | |
870 | ||
871 | static int | |
872 | bp_location_compare_addrs (const void *ap, const void *bp) | |
873 | { | |
874 | struct bp_location *a = *(void **) ap; | |
875 | struct bp_location *b = *(void **) bp; | |
876 | ||
877 | if (a->address == b->address) | |
878 | return 0; | |
879 | else | |
880 | return ((a->address > b->address) - (a->address < b->address)); | |
881 | } | |
882 | ||
883 | /* Helper function to skip all bp_locations with addresses | |
884 | less than ADDRESS. It returns the first bp_location that | |
885 | is greater than or equal to ADDRESS. If none is found, just | |
886 | return NULL. */ | |
887 | ||
888 | static struct bp_location ** | |
889 | get_first_locp_gte_addr (CORE_ADDR address) | |
890 | { | |
891 | struct bp_location dummy_loc; | |
892 | struct bp_location *dummy_locp = &dummy_loc; | |
893 | struct bp_location **locp_found = NULL; | |
894 | ||
895 | /* Initialize the dummy location's address field. */ | |
896 | memset (&dummy_loc, 0, sizeof (struct bp_location)); | |
897 | dummy_loc.address = address; | |
898 | ||
899 | /* Find a close match to the first location at ADDRESS. */ | |
900 | locp_found = bsearch (&dummy_locp, bp_location, bp_location_count, | |
901 | sizeof (struct bp_location **), | |
902 | bp_location_compare_addrs); | |
903 | ||
904 | /* Nothing was found, nothing left to do. */ | |
905 | if (locp_found == NULL) | |
906 | return NULL; | |
907 | ||
908 | /* We may have found a location that is at ADDRESS but is not the first in the | |
909 | location's list. Go backwards (if possible) and locate the first one. */ | |
910 | while ((locp_found - 1) >= bp_location | |
911 | && (*(locp_found - 1))->address == address) | |
912 | locp_found--; | |
913 | ||
914 | return locp_found; | |
915 | } | |
916 | ||
adc36818 PM |
917 | void |
918 | set_breakpoint_condition (struct breakpoint *b, char *exp, | |
919 | int from_tty) | |
920 | { | |
3a5c3e22 PA |
921 | xfree (b->cond_string); |
922 | b->cond_string = NULL; | |
adc36818 | 923 | |
3a5c3e22 | 924 | if (is_watchpoint (b)) |
adc36818 | 925 | { |
3a5c3e22 PA |
926 | struct watchpoint *w = (struct watchpoint *) b; |
927 | ||
928 | xfree (w->cond_exp); | |
929 | w->cond_exp = NULL; | |
930 | } | |
931 | else | |
932 | { | |
933 | struct bp_location *loc; | |
934 | ||
935 | for (loc = b->loc; loc; loc = loc->next) | |
936 | { | |
937 | xfree (loc->cond); | |
938 | loc->cond = NULL; | |
b775012e LM |
939 | |
940 | /* No need to free the condition agent expression | |
941 | bytecode (if we have one). We will handle this | |
942 | when we go through update_global_location_list. */ | |
3a5c3e22 | 943 | } |
adc36818 | 944 | } |
adc36818 PM |
945 | |
946 | if (*exp == 0) | |
947 | { | |
948 | if (from_tty) | |
949 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
950 | } | |
951 | else | |
952 | { | |
bbc13ae3 | 953 | const char *arg = exp; |
cc59ec59 | 954 | |
adc36818 PM |
955 | /* I don't know if it matters whether this is the string the user |
956 | typed in or the decompiled expression. */ | |
957 | b->cond_string = xstrdup (arg); | |
958 | b->condition_not_parsed = 0; | |
959 | ||
960 | if (is_watchpoint (b)) | |
961 | { | |
3a5c3e22 PA |
962 | struct watchpoint *w = (struct watchpoint *) b; |
963 | ||
adc36818 PM |
964 | innermost_block = NULL; |
965 | arg = exp; | |
1bb9788d | 966 | w->cond_exp = parse_exp_1 (&arg, 0, 0, 0); |
adc36818 PM |
967 | if (*arg) |
968 | error (_("Junk at end of expression")); | |
3a5c3e22 | 969 | w->cond_exp_valid_block = innermost_block; |
adc36818 PM |
970 | } |
971 | else | |
972 | { | |
3a5c3e22 PA |
973 | struct bp_location *loc; |
974 | ||
adc36818 PM |
975 | for (loc = b->loc; loc; loc = loc->next) |
976 | { | |
977 | arg = exp; | |
978 | loc->cond = | |
1bb9788d TT |
979 | parse_exp_1 (&arg, loc->address, |
980 | block_for_pc (loc->address), 0); | |
adc36818 PM |
981 | if (*arg) |
982 | error (_("Junk at end of expression")); | |
983 | } | |
984 | } | |
985 | } | |
b775012e LM |
986 | mark_breakpoint_modified (b); |
987 | ||
8d3788bd | 988 | observer_notify_breakpoint_modified (b); |
adc36818 PM |
989 | } |
990 | ||
d55637df TT |
991 | /* Completion for the "condition" command. */ |
992 | ||
993 | static VEC (char_ptr) * | |
6f937416 PA |
994 | condition_completer (struct cmd_list_element *cmd, |
995 | const char *text, const char *word) | |
d55637df | 996 | { |
6f937416 | 997 | const char *space; |
d55637df | 998 | |
6f937416 PA |
999 | text = skip_spaces_const (text); |
1000 | space = skip_to_space_const (text); | |
d55637df TT |
1001 | if (*space == '\0') |
1002 | { | |
1003 | int len; | |
1004 | struct breakpoint *b; | |
1005 | VEC (char_ptr) *result = NULL; | |
1006 | ||
1007 | if (text[0] == '$') | |
1008 | { | |
1009 | /* We don't support completion of history indices. */ | |
1010 | if (isdigit (text[1])) | |
1011 | return NULL; | |
1012 | return complete_internalvar (&text[1]); | |
1013 | } | |
1014 | ||
1015 | /* We're completing the breakpoint number. */ | |
1016 | len = strlen (text); | |
1017 | ||
1018 | ALL_BREAKPOINTS (b) | |
1019 | { | |
1020 | int single = b->loc->next == NULL; | |
1021 | struct bp_location *loc; | |
1022 | int count = 1; | |
1023 | ||
1024 | for (loc = b->loc; loc; loc = loc->next) | |
1025 | { | |
1026 | char location[50]; | |
1027 | ||
1028 | if (single) | |
8c042590 | 1029 | xsnprintf (location, sizeof (location), "%d", b->number); |
d55637df | 1030 | else |
8c042590 PM |
1031 | xsnprintf (location, sizeof (location), "%d.%d", b->number, |
1032 | count); | |
d55637df TT |
1033 | |
1034 | if (strncmp (location, text, len) == 0) | |
1035 | VEC_safe_push (char_ptr, result, xstrdup (location)); | |
1036 | ||
1037 | ++count; | |
1038 | } | |
1039 | } | |
1040 | ||
1041 | return result; | |
1042 | } | |
1043 | ||
1044 | /* We're completing the expression part. */ | |
6f937416 | 1045 | text = skip_spaces_const (space); |
d55637df TT |
1046 | return expression_completer (cmd, text, word); |
1047 | } | |
1048 | ||
c906108c SS |
1049 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
1050 | ||
1051 | static void | |
fba45db2 | 1052 | condition_command (char *arg, int from_tty) |
c906108c | 1053 | { |
52f0bd74 | 1054 | struct breakpoint *b; |
c906108c | 1055 | char *p; |
52f0bd74 | 1056 | int bnum; |
c906108c SS |
1057 | |
1058 | if (arg == 0) | |
e2e0b3e5 | 1059 | error_no_arg (_("breakpoint number")); |
c906108c SS |
1060 | |
1061 | p = arg; | |
1062 | bnum = get_number (&p); | |
5c44784c | 1063 | if (bnum == 0) |
8a3fe4f8 | 1064 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
1065 | |
1066 | ALL_BREAKPOINTS (b) | |
1067 | if (b->number == bnum) | |
2f069f6f | 1068 | { |
7371cf6d PM |
1069 | /* Check if this breakpoint has a Python object assigned to |
1070 | it, and if it has a definition of the "stop" | |
1071 | method. This method and conditions entered into GDB from | |
1072 | the CLI are mutually exclusive. */ | |
1073 | if (b->py_bp_object | |
1074 | && gdbpy_breakpoint_has_py_cond (b->py_bp_object)) | |
1075 | error (_("Cannot set a condition where a Python 'stop' " | |
1076 | "method has been defined in the breakpoint.")); | |
2566ad2d | 1077 | set_breakpoint_condition (b, p, from_tty); |
b775012e LM |
1078 | |
1079 | if (is_breakpoint (b)) | |
1080 | update_global_location_list (1); | |
1081 | ||
2f069f6f JB |
1082 | return; |
1083 | } | |
c906108c | 1084 | |
8a3fe4f8 | 1085 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
1086 | } |
1087 | ||
a7bdde9e VP |
1088 | /* Check that COMMAND do not contain commands that are suitable |
1089 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1090 | Throw if any such commands is found. */ |
1091 | ||
a7bdde9e VP |
1092 | static void |
1093 | check_no_tracepoint_commands (struct command_line *commands) | |
1094 | { | |
1095 | struct command_line *c; | |
cc59ec59 | 1096 | |
a7bdde9e VP |
1097 | for (c = commands; c; c = c->next) |
1098 | { | |
1099 | int i; | |
1100 | ||
1101 | if (c->control_type == while_stepping_control) | |
3e43a32a MS |
1102 | error (_("The 'while-stepping' command can " |
1103 | "only be used for tracepoints")); | |
a7bdde9e VP |
1104 | |
1105 | for (i = 0; i < c->body_count; ++i) | |
1106 | check_no_tracepoint_commands ((c->body_list)[i]); | |
1107 | ||
1108 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1109 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1110 | command directly. */ |
1111 | if (strstr (c->line, "collect ") == c->line) | |
1112 | error (_("The 'collect' command can only be used for tracepoints")); | |
1113 | ||
51661e93 VP |
1114 | if (strstr (c->line, "teval ") == c->line) |
1115 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1116 | } |
1117 | } | |
1118 | ||
d77f58be SS |
1119 | /* Encapsulate tests for different types of tracepoints. */ |
1120 | ||
d9b3f62e PA |
1121 | static int |
1122 | is_tracepoint_type (enum bptype type) | |
1123 | { | |
1124 | return (type == bp_tracepoint | |
1125 | || type == bp_fast_tracepoint | |
1126 | || type == bp_static_tracepoint); | |
1127 | } | |
1128 | ||
a7bdde9e | 1129 | int |
d77f58be | 1130 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1131 | { |
d9b3f62e | 1132 | return is_tracepoint_type (b->type); |
a7bdde9e | 1133 | } |
d9b3f62e | 1134 | |
e5dd4106 | 1135 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1136 | breakpoint. This function will throw an exception if a problem is |
1137 | found. */ | |
48cb2d85 | 1138 | |
95a42b64 TT |
1139 | static void |
1140 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1141 | struct command_line *commands) | |
48cb2d85 | 1142 | { |
d77f58be | 1143 | if (is_tracepoint (b)) |
a7bdde9e | 1144 | { |
4a64f543 MS |
1145 | /* We need to verify that each top-level element of commands is |
1146 | valid for tracepoints, that there's at most one | |
1147 | while-stepping element, and that while-stepping's body has | |
1148 | valid tracing commands excluding nested while-stepping. */ | |
a7bdde9e VP |
1149 | struct command_line *c; |
1150 | struct command_line *while_stepping = 0; | |
1151 | for (c = commands; c; c = c->next) | |
1152 | { | |
a7bdde9e VP |
1153 | if (c->control_type == while_stepping_control) |
1154 | { | |
1155 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1156 | error (_("The 'while-stepping' command " |
1157 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1158 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1159 | error (_("The 'while-stepping' command " |
1160 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1161 | |
1162 | if (while_stepping) | |
3e43a32a MS |
1163 | error (_("The 'while-stepping' command " |
1164 | "can be used only once")); | |
a7bdde9e VP |
1165 | else |
1166 | while_stepping = c; | |
1167 | } | |
1168 | } | |
1169 | if (while_stepping) | |
1170 | { | |
1171 | struct command_line *c2; | |
1172 | ||
1173 | gdb_assert (while_stepping->body_count == 1); | |
1174 | c2 = while_stepping->body_list[0]; | |
1175 | for (; c2; c2 = c2->next) | |
1176 | { | |
a7bdde9e VP |
1177 | if (c2->control_type == while_stepping_control) |
1178 | error (_("The 'while-stepping' command cannot be nested")); | |
1179 | } | |
1180 | } | |
1181 | } | |
1182 | else | |
1183 | { | |
1184 | check_no_tracepoint_commands (commands); | |
1185 | } | |
95a42b64 TT |
1186 | } |
1187 | ||
0fb4aa4b PA |
1188 | /* Return a vector of all the static tracepoints set at ADDR. The |
1189 | caller is responsible for releasing the vector. */ | |
1190 | ||
1191 | VEC(breakpoint_p) * | |
1192 | static_tracepoints_here (CORE_ADDR addr) | |
1193 | { | |
1194 | struct breakpoint *b; | |
1195 | VEC(breakpoint_p) *found = 0; | |
1196 | struct bp_location *loc; | |
1197 | ||
1198 | ALL_BREAKPOINTS (b) | |
1199 | if (b->type == bp_static_tracepoint) | |
1200 | { | |
1201 | for (loc = b->loc; loc; loc = loc->next) | |
1202 | if (loc->address == addr) | |
1203 | VEC_safe_push(breakpoint_p, found, b); | |
1204 | } | |
1205 | ||
1206 | return found; | |
1207 | } | |
1208 | ||
95a42b64 | 1209 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1210 | validate that only allowed commands are included. */ |
95a42b64 TT |
1211 | |
1212 | void | |
4a64f543 MS |
1213 | breakpoint_set_commands (struct breakpoint *b, |
1214 | struct command_line *commands) | |
95a42b64 TT |
1215 | { |
1216 | validate_commands_for_breakpoint (b, commands); | |
a7bdde9e | 1217 | |
9add0f1b TT |
1218 | decref_counted_command_line (&b->commands); |
1219 | b->commands = alloc_counted_command_line (commands); | |
8d3788bd | 1220 | observer_notify_breakpoint_modified (b); |
48cb2d85 VP |
1221 | } |
1222 | ||
45a43567 TT |
1223 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1224 | is not the same as the "silent" that may appear in the breakpoint's | |
1225 | commands. */ | |
1226 | ||
1227 | void | |
1228 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1229 | { | |
1230 | int old_silent = b->silent; | |
1231 | ||
1232 | b->silent = silent; | |
1233 | if (old_silent != silent) | |
8d3788bd | 1234 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1235 | } |
1236 | ||
1237 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1238 | breakpoint work for any thread. */ | |
1239 | ||
1240 | void | |
1241 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1242 | { | |
1243 | int old_thread = b->thread; | |
1244 | ||
1245 | b->thread = thread; | |
1246 | if (old_thread != thread) | |
8d3788bd | 1247 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1248 | } |
1249 | ||
1250 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1251 | breakpoint work for any task. */ | |
1252 | ||
1253 | void | |
1254 | breakpoint_set_task (struct breakpoint *b, int task) | |
1255 | { | |
1256 | int old_task = b->task; | |
1257 | ||
1258 | b->task = task; | |
1259 | if (old_task != task) | |
8d3788bd | 1260 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1261 | } |
1262 | ||
95a42b64 TT |
1263 | void |
1264 | check_tracepoint_command (char *line, void *closure) | |
a7bdde9e VP |
1265 | { |
1266 | struct breakpoint *b = closure; | |
cc59ec59 | 1267 | |
6f937416 | 1268 | validate_actionline (line, b); |
a7bdde9e VP |
1269 | } |
1270 | ||
95a42b64 TT |
1271 | /* A structure used to pass information through |
1272 | map_breakpoint_numbers. */ | |
1273 | ||
1274 | struct commands_info | |
1275 | { | |
1276 | /* True if the command was typed at a tty. */ | |
1277 | int from_tty; | |
86b17b60 PA |
1278 | |
1279 | /* The breakpoint range spec. */ | |
1280 | char *arg; | |
1281 | ||
95a42b64 TT |
1282 | /* Non-NULL if the body of the commands are being read from this |
1283 | already-parsed command. */ | |
1284 | struct command_line *control; | |
86b17b60 | 1285 | |
95a42b64 TT |
1286 | /* The command lines read from the user, or NULL if they have not |
1287 | yet been read. */ | |
1288 | struct counted_command_line *cmd; | |
1289 | }; | |
1290 | ||
1291 | /* A callback for map_breakpoint_numbers that sets the commands for | |
1292 | commands_command. */ | |
1293 | ||
c906108c | 1294 | static void |
95a42b64 | 1295 | do_map_commands_command (struct breakpoint *b, void *data) |
c906108c | 1296 | { |
95a42b64 | 1297 | struct commands_info *info = data; |
c906108c | 1298 | |
95a42b64 TT |
1299 | if (info->cmd == NULL) |
1300 | { | |
1301 | struct command_line *l; | |
5c44784c | 1302 | |
95a42b64 TT |
1303 | if (info->control != NULL) |
1304 | l = copy_command_lines (info->control->body_list[0]); | |
1305 | else | |
86b17b60 PA |
1306 | { |
1307 | struct cleanup *old_chain; | |
1308 | char *str; | |
c5aa993b | 1309 | |
3e43a32a MS |
1310 | str = xstrprintf (_("Type commands for breakpoint(s) " |
1311 | "%s, one per line."), | |
86b17b60 PA |
1312 | info->arg); |
1313 | ||
1314 | old_chain = make_cleanup (xfree, str); | |
1315 | ||
1316 | l = read_command_lines (str, | |
1317 | info->from_tty, 1, | |
d77f58be | 1318 | (is_tracepoint (b) |
86b17b60 PA |
1319 | ? check_tracepoint_command : 0), |
1320 | b); | |
1321 | ||
1322 | do_cleanups (old_chain); | |
1323 | } | |
a7bdde9e | 1324 | |
95a42b64 TT |
1325 | info->cmd = alloc_counted_command_line (l); |
1326 | } | |
1327 | ||
1328 | /* If a breakpoint was on the list more than once, we don't need to | |
1329 | do anything. */ | |
1330 | if (b->commands != info->cmd) | |
1331 | { | |
1332 | validate_commands_for_breakpoint (b, info->cmd->commands); | |
1333 | incref_counted_command_line (info->cmd); | |
1334 | decref_counted_command_line (&b->commands); | |
1335 | b->commands = info->cmd; | |
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; | |
20ced3e4 | 1571 | int placed_size = bl->target_info.placed_size; |
f0ba3972 PA |
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 | { | |
bbc13ae3 | 1763 | const 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; | |
bbc13ae3 KS |
2190 | const char *cmdrest; |
2191 | const char *format_start, *format_end; | |
d3ce09f5 SS |
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; | |
bbc13ae3 | 2203 | cmdrest = skip_spaces_const (cmdrest); |
d3ce09f5 SS |
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 | ||
bbc13ae3 | 2219 | cmdrest = skip_spaces_const (cmdrest); |
d3ce09f5 SS |
2220 | |
2221 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2222 | error (_("Invalid argument syntax")); | |
2223 | ||
2224 | if (*cmdrest == ',') | |
2225 | cmdrest++; | |
bbc13ae3 | 2226 | cmdrest = skip_spaces_const (cmdrest); |
d3ce09f5 SS |
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 | { | |
bbc13ae3 | 2236 | const char *cmd1; |
d3ce09f5 SS |
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 | ||
ab04a2af TT |
4148 | /* See breakpoint.h. */ |
4149 | ||
4150 | enum bpstat_signal_value | |
4151 | bpstat_explains_signal (bpstat bsp) | |
4152 | { | |
4153 | enum bpstat_signal_value result = BPSTAT_SIGNAL_NO; | |
4154 | ||
4155 | for (; bsp != NULL; bsp = bsp->next) | |
4156 | { | |
4157 | /* Ensure that, if we ever entered this loop, then we at least | |
4158 | return BPSTAT_SIGNAL_HIDE. */ | |
4159 | enum bpstat_signal_value newval = BPSTAT_SIGNAL_HIDE; | |
4160 | ||
4161 | if (bsp->breakpoint_at != NULL) | |
4162 | newval = bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at); | |
4163 | ||
4164 | if (newval > result) | |
4165 | result = newval; | |
4166 | } | |
4167 | ||
4168 | return result; | |
4169 | } | |
4170 | ||
4a64f543 MS |
4171 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4172 | stopped at. *BSP upon return is a bpstat which points to the | |
4173 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4174 | good for anything but further calls to bpstat_num). | |
4175 | ||
8671a17b PA |
4176 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4177 | Return -1 if stopped at a breakpoint that has been deleted since | |
4178 | we set it. | |
4179 | Return 1 otherwise. */ | |
c906108c SS |
4180 | |
4181 | int | |
8671a17b | 4182 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4183 | { |
4184 | struct breakpoint *b; | |
4185 | ||
4186 | if ((*bsp) == NULL) | |
4187 | return 0; /* No more breakpoint values */ | |
8671a17b | 4188 | |
4a64f543 MS |
4189 | /* We assume we'll never have several bpstats that correspond to a |
4190 | single breakpoint -- otherwise, this function might return the | |
4191 | same number more than once and this will look ugly. */ | |
f431efe5 | 4192 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4193 | *bsp = (*bsp)->next; |
4194 | if (b == NULL) | |
4195 | return -1; /* breakpoint that's been deleted since */ | |
4196 | ||
4197 | *num = b->number; /* We have its number */ | |
4198 | return 1; | |
c906108c SS |
4199 | } |
4200 | ||
e93ca019 | 4201 | /* See breakpoint.h. */ |
c906108c SS |
4202 | |
4203 | void | |
e93ca019 | 4204 | bpstat_clear_actions (void) |
c906108c | 4205 | { |
e93ca019 JK |
4206 | struct thread_info *tp; |
4207 | bpstat bs; | |
4208 | ||
4209 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4210 | return; | |
4211 | ||
4212 | tp = find_thread_ptid (inferior_ptid); | |
4213 | if (tp == NULL) | |
4214 | return; | |
4215 | ||
4216 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) | |
c906108c | 4217 | { |
9add0f1b | 4218 | decref_counted_command_line (&bs->commands); |
abf85f46 | 4219 | |
c906108c SS |
4220 | if (bs->old_val != NULL) |
4221 | { | |
4222 | value_free (bs->old_val); | |
4223 | bs->old_val = NULL; | |
4224 | } | |
4225 | } | |
4226 | } | |
4227 | ||
f3b1572e PA |
4228 | /* Called when a command is about to proceed the inferior. */ |
4229 | ||
4230 | static void | |
4231 | breakpoint_about_to_proceed (void) | |
4232 | { | |
4233 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
4234 | { | |
4235 | struct thread_info *tp = inferior_thread (); | |
4236 | ||
4237 | /* Allow inferior function calls in breakpoint commands to not | |
4238 | interrupt the command list. When the call finishes | |
4239 | successfully, the inferior will be standing at the same | |
4240 | breakpoint as if nothing happened. */ | |
16c381f0 | 4241 | if (tp->control.in_infcall) |
f3b1572e PA |
4242 | return; |
4243 | } | |
4244 | ||
4245 | breakpoint_proceeded = 1; | |
4246 | } | |
4247 | ||
4a64f543 MS |
4248 | /* Stub for cleaning up our state if we error-out of a breakpoint |
4249 | command. */ | |
c906108c | 4250 | static void |
4efb68b1 | 4251 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
4252 | { |
4253 | executing_breakpoint_commands = 0; | |
4254 | } | |
4255 | ||
abf85f46 JK |
4256 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4257 | or its equivalent. */ | |
4258 | ||
4259 | static int | |
4260 | command_line_is_silent (struct command_line *cmd) | |
4261 | { | |
4262 | return cmd && (strcmp ("silent", cmd->line) == 0 | |
4263 | || (xdb_commands && strcmp ("Q", cmd->line) == 0)); | |
4264 | } | |
4265 | ||
4a64f543 MS |
4266 | /* Execute all the commands associated with all the breakpoints at |
4267 | this location. Any of these commands could cause the process to | |
4268 | proceed beyond this point, etc. We look out for such changes by | |
4269 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4270 | |
347bddb7 PA |
4271 | Returns true if a breakpoint command resumed the inferior. In that |
4272 | case, it is the caller's responsibility to recall it again with the | |
4273 | bpstat of the current thread. */ | |
4274 | ||
4275 | static int | |
4276 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4277 | { |
4278 | bpstat bs; | |
4279 | struct cleanup *old_chain; | |
347bddb7 | 4280 | int again = 0; |
c906108c SS |
4281 | |
4282 | /* Avoid endless recursion if a `source' command is contained | |
4283 | in bs->commands. */ | |
4284 | if (executing_breakpoint_commands) | |
347bddb7 | 4285 | return 0; |
c906108c SS |
4286 | |
4287 | executing_breakpoint_commands = 1; | |
4288 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
4289 | ||
cf6c5ffb TT |
4290 | prevent_dont_repeat (); |
4291 | ||
4a64f543 | 4292 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4293 | bs = *bsp; |
4294 | ||
4295 | breakpoint_proceeded = 0; | |
4296 | for (; bs != NULL; bs = bs->next) | |
4297 | { | |
9add0f1b | 4298 | struct counted_command_line *ccmd; |
6c50ab1c JB |
4299 | struct command_line *cmd; |
4300 | struct cleanup *this_cmd_tree_chain; | |
4301 | ||
4302 | /* Take ownership of the BSP's command tree, if it has one. | |
4303 | ||
4304 | The command tree could legitimately contain commands like | |
4305 | 'step' and 'next', which call clear_proceed_status, which | |
4306 | frees stop_bpstat's command tree. To make sure this doesn't | |
4307 | free the tree we're executing out from under us, we need to | |
4308 | take ownership of the tree ourselves. Since a given bpstat's | |
4309 | commands are only executed once, we don't need to copy it; we | |
4310 | can clear the pointer in the bpstat, and make sure we free | |
4311 | the tree when we're done. */ | |
9add0f1b TT |
4312 | ccmd = bs->commands; |
4313 | bs->commands = NULL; | |
abf85f46 JK |
4314 | this_cmd_tree_chain = make_cleanup_decref_counted_command_line (&ccmd); |
4315 | cmd = ccmd ? ccmd->commands : NULL; | |
4316 | if (command_line_is_silent (cmd)) | |
4317 | { | |
4318 | /* The action has been already done by bpstat_stop_status. */ | |
4319 | cmd = cmd->next; | |
4320 | } | |
6c50ab1c | 4321 | |
c906108c SS |
4322 | while (cmd != NULL) |
4323 | { | |
4324 | execute_control_command (cmd); | |
4325 | ||
4326 | if (breakpoint_proceeded) | |
4327 | break; | |
4328 | else | |
4329 | cmd = cmd->next; | |
4330 | } | |
6c50ab1c JB |
4331 | |
4332 | /* We can free this command tree now. */ | |
4333 | do_cleanups (this_cmd_tree_chain); | |
4334 | ||
c906108c | 4335 | if (breakpoint_proceeded) |
32c1e744 VP |
4336 | { |
4337 | if (target_can_async_p ()) | |
347bddb7 PA |
4338 | /* If we are in async mode, then the target might be still |
4339 | running, not stopped at any breakpoint, so nothing for | |
4340 | us to do here -- just return to the event loop. */ | |
4341 | ; | |
32c1e744 VP |
4342 | else |
4343 | /* In sync mode, when execute_control_command returns | |
4344 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4345 | Breakpoint commands for that stop were not run, since |
4346 | execute_command does not run breakpoint commands -- | |
4347 | only command_line_handler does, but that one is not | |
4348 | involved in execution of breakpoint commands. So, we | |
4349 | can now execute breakpoint commands. It should be | |
4350 | noted that making execute_command do bpstat actions is | |
4351 | not an option -- in this case we'll have recursive | |
4352 | invocation of bpstat for each breakpoint with a | |
4353 | command, and can easily blow up GDB stack. Instead, we | |
4354 | return true, which will trigger the caller to recall us | |
4355 | with the new stop_bpstat. */ | |
4356 | again = 1; | |
4357 | break; | |
32c1e744 | 4358 | } |
c906108c | 4359 | } |
c2b8ed2c | 4360 | do_cleanups (old_chain); |
347bddb7 PA |
4361 | return again; |
4362 | } | |
4363 | ||
4364 | void | |
4365 | bpstat_do_actions (void) | |
4366 | { | |
353d1d73 JK |
4367 | struct cleanup *cleanup_if_error = make_bpstat_clear_actions_cleanup (); |
4368 | ||
347bddb7 PA |
4369 | /* Do any commands attached to breakpoint we are stopped at. */ |
4370 | while (!ptid_equal (inferior_ptid, null_ptid) | |
4371 | && target_has_execution | |
4372 | && !is_exited (inferior_ptid) | |
4373 | && !is_executing (inferior_ptid)) | |
4374 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
4375 | and only return when it is stopped at the next breakpoint, we | |
4376 | keep doing breakpoint actions until it returns false to | |
4377 | indicate the inferior was not resumed. */ | |
16c381f0 | 4378 | if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) |
347bddb7 | 4379 | break; |
353d1d73 JK |
4380 | |
4381 | discard_cleanups (cleanup_if_error); | |
c906108c SS |
4382 | } |
4383 | ||
fa4727a6 DJ |
4384 | /* Print out the (old or new) value associated with a watchpoint. */ |
4385 | ||
4386 | static void | |
4387 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4388 | { | |
4389 | if (val == NULL) | |
4390 | fprintf_unfiltered (stream, _("<unreadable>")); | |
4391 | else | |
79a45b7d TT |
4392 | { |
4393 | struct value_print_options opts; | |
4394 | get_user_print_options (&opts); | |
4395 | value_print (val, stream, &opts); | |
4396 | } | |
fa4727a6 DJ |
4397 | } |
4398 | ||
e514a9d6 | 4399 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4400 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4401 | 'print_it' in the bpstat structure. Under some circumstances we |
4402 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4403 | normal_stop(). */ |
e514a9d6 JM |
4404 | |
4405 | static enum print_stop_action | |
4406 | print_bp_stop_message (bpstat bs) | |
4407 | { | |
4408 | switch (bs->print_it) | |
4409 | { | |
4410 | case print_it_noop: | |
4a64f543 | 4411 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4412 | return PRINT_UNKNOWN; |
4413 | break; | |
4414 | ||
4415 | case print_it_done: | |
4416 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 4417 | relevant messages. */ |
e514a9d6 JM |
4418 | return PRINT_SRC_AND_LOC; |
4419 | break; | |
4420 | ||
4421 | case print_it_normal: | |
4f8d1dc6 | 4422 | { |
f431efe5 PA |
4423 | struct breakpoint *b = bs->breakpoint_at; |
4424 | ||
1a6a67de TJB |
4425 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4426 | which has since been deleted. */ | |
4427 | if (b == NULL) | |
4428 | return PRINT_UNKNOWN; | |
4429 | ||
348d480f PA |
4430 | /* Normal case. Call the breakpoint's print_it method. */ |
4431 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4432 | } |
348d480f | 4433 | break; |
3086aeae | 4434 | |
e514a9d6 | 4435 | default: |
8e65ff28 | 4436 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4437 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4438 | break; |
c906108c | 4439 | } |
c906108c SS |
4440 | } |
4441 | ||
edcc5120 TT |
4442 | /* A helper function that prints a shared library stopped event. */ |
4443 | ||
4444 | static void | |
4445 | print_solib_event (int is_catchpoint) | |
4446 | { | |
4447 | int any_deleted | |
4448 | = !VEC_empty (char_ptr, current_program_space->deleted_solibs); | |
4449 | int any_added | |
4450 | = !VEC_empty (so_list_ptr, current_program_space->added_solibs); | |
4451 | ||
4452 | if (!is_catchpoint) | |
4453 | { | |
4454 | if (any_added || any_deleted) | |
4455 | ui_out_text (current_uiout, | |
4456 | _("Stopped due to shared library event:\n")); | |
4457 | else | |
4458 | ui_out_text (current_uiout, | |
4459 | _("Stopped due to shared library event (no " | |
4460 | "libraries added or removed)\n")); | |
4461 | } | |
4462 | ||
4463 | if (ui_out_is_mi_like_p (current_uiout)) | |
4464 | ui_out_field_string (current_uiout, "reason", | |
4465 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
4466 | ||
4467 | if (any_deleted) | |
4468 | { | |
4469 | struct cleanup *cleanup; | |
4470 | char *name; | |
4471 | int ix; | |
4472 | ||
4473 | ui_out_text (current_uiout, _(" Inferior unloaded ")); | |
4474 | cleanup = make_cleanup_ui_out_list_begin_end (current_uiout, | |
4475 | "removed"); | |
4476 | for (ix = 0; | |
4477 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
4478 | ix, name); | |
4479 | ++ix) | |
4480 | { | |
4481 | if (ix > 0) | |
4482 | ui_out_text (current_uiout, " "); | |
4483 | ui_out_field_string (current_uiout, "library", name); | |
4484 | ui_out_text (current_uiout, "\n"); | |
4485 | } | |
4486 | ||
4487 | do_cleanups (cleanup); | |
4488 | } | |
4489 | ||
4490 | if (any_added) | |
4491 | { | |
4492 | struct so_list *iter; | |
4493 | int ix; | |
4494 | struct cleanup *cleanup; | |
4495 | ||
4496 | ui_out_text (current_uiout, _(" Inferior loaded ")); | |
4497 | cleanup = make_cleanup_ui_out_list_begin_end (current_uiout, | |
4498 | "added"); | |
4499 | for (ix = 0; | |
4500 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
4501 | ix, iter); | |
4502 | ++ix) | |
4503 | { | |
4504 | if (ix > 0) | |
4505 | ui_out_text (current_uiout, " "); | |
4506 | ui_out_field_string (current_uiout, "library", iter->so_name); | |
4507 | ui_out_text (current_uiout, "\n"); | |
4508 | } | |
4509 | ||
4510 | do_cleanups (cleanup); | |
4511 | } | |
4512 | } | |
4513 | ||
e514a9d6 JM |
4514 | /* Print a message indicating what happened. This is called from |
4515 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4516 | list - a list of the eventpoints that caused this stop. KIND is |
4517 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4518 | routine calls the generic print routine for printing a message |
4519 | about reasons for stopping. This will print (for example) the | |
4520 | "Breakpoint n," part of the output. The return value of this | |
4521 | routine is one of: | |
c906108c | 4522 | |
4a64f543 | 4523 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4524 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4525 | code to print the location. An example is |
c5aa993b JM |
4526 | "Breakpoint 1, " which should be followed by |
4527 | the location. | |
917317f4 | 4528 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4529 | to also print the location part of the message. |
4530 | An example is the catch/throw messages, which | |
4a64f543 | 4531 | don't require a location appended to the end. |
917317f4 | 4532 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4533 | further info to be printed. */ |
c906108c | 4534 | |
917317f4 | 4535 | enum print_stop_action |
36dfb11c | 4536 | bpstat_print (bpstat bs, int kind) |
c906108c SS |
4537 | { |
4538 | int val; | |
c5aa993b | 4539 | |
c906108c | 4540 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4541 | (Currently all watchpoints go on the bpstat whether hit or not. |
4542 | That probably could (should) be changed, provided care is taken | |
c906108c | 4543 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4544 | for (; bs; bs = bs->next) |
4545 | { | |
4546 | val = print_bp_stop_message (bs); | |
4547 | if (val == PRINT_SRC_ONLY | |
4548 | || val == PRINT_SRC_AND_LOC | |
4549 | || val == PRINT_NOTHING) | |
4550 | return val; | |
4551 | } | |
c906108c | 4552 | |
36dfb11c TT |
4553 | /* If we had hit a shared library event breakpoint, |
4554 | print_bp_stop_message would print out this message. If we hit an | |
4555 | OS-level shared library event, do the same thing. */ | |
4556 | if (kind == TARGET_WAITKIND_LOADED) | |
4557 | { | |
edcc5120 | 4558 | print_solib_event (0); |
36dfb11c TT |
4559 | return PRINT_NOTHING; |
4560 | } | |
4561 | ||
e514a9d6 | 4562 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4563 | with and nothing was printed. */ |
917317f4 | 4564 | return PRINT_UNKNOWN; |
c906108c SS |
4565 | } |
4566 | ||
4a64f543 MS |
4567 | /* Evaluate the expression EXP and return 1 if value is zero. This is |
4568 | used inside a catch_errors to evaluate the breakpoint condition. | |
4569 | The argument is a "struct expression *" that has been cast to a | |
4570 | "char *" to make it pass through catch_errors. */ | |
c906108c SS |
4571 | |
4572 | static int | |
4efb68b1 | 4573 | breakpoint_cond_eval (void *exp) |
c906108c | 4574 | { |
278cd55f | 4575 | struct value *mark = value_mark (); |
c5aa993b | 4576 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
cc59ec59 | 4577 | |
c906108c SS |
4578 | value_free_to_mark (mark); |
4579 | return i; | |
4580 | } | |
4581 | ||
5760d0ab | 4582 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c SS |
4583 | |
4584 | static bpstat | |
5760d0ab | 4585 | bpstat_alloc (struct bp_location *bl, bpstat **bs_link_pointer) |
c906108c SS |
4586 | { |
4587 | bpstat bs; | |
4588 | ||
4589 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
5760d0ab JK |
4590 | bs->next = NULL; |
4591 | **bs_link_pointer = bs; | |
4592 | *bs_link_pointer = &bs->next; | |
f431efe5 PA |
4593 | bs->breakpoint_at = bl->owner; |
4594 | bs->bp_location_at = bl; | |
4595 | incref_bp_location (bl); | |
c906108c SS |
4596 | /* If the condition is false, etc., don't do the commands. */ |
4597 | bs->commands = NULL; | |
4598 | bs->old_val = NULL; | |
4599 | bs->print_it = print_it_normal; | |
4600 | return bs; | |
4601 | } | |
4602 | \f | |
d983da9c DJ |
4603 | /* The target has stopped with waitstatus WS. Check if any hardware |
4604 | watchpoints have triggered, according to the target. */ | |
4605 | ||
4606 | int | |
4607 | watchpoints_triggered (struct target_waitstatus *ws) | |
4608 | { | |
d92524f1 | 4609 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
4610 | CORE_ADDR addr; |
4611 | struct breakpoint *b; | |
4612 | ||
4613 | if (!stopped_by_watchpoint) | |
4614 | { | |
4615 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4616 | as not triggered. */ | |
4617 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4618 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4619 | { |
4620 | struct watchpoint *w = (struct watchpoint *) b; | |
4621 | ||
4622 | w->watchpoint_triggered = watch_triggered_no; | |
4623 | } | |
d983da9c DJ |
4624 | |
4625 | return 0; | |
4626 | } | |
4627 | ||
4628 | if (!target_stopped_data_address (¤t_target, &addr)) | |
4629 | { | |
4630 | /* We were stopped by a watchpoint, but we don't know where. | |
4631 | Mark all watchpoints as unknown. */ | |
4632 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4633 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4634 | { |
4635 | struct watchpoint *w = (struct watchpoint *) b; | |
4636 | ||
4637 | w->watchpoint_triggered = watch_triggered_unknown; | |
4638 | } | |
d983da9c DJ |
4639 | |
4640 | return stopped_by_watchpoint; | |
4641 | } | |
4642 | ||
4643 | /* The target could report the data address. Mark watchpoints | |
4644 | affected by this data address as triggered, and all others as not | |
4645 | triggered. */ | |
4646 | ||
4647 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4648 | if (is_hardware_watchpoint (b)) |
d983da9c | 4649 | { |
3a5c3e22 | 4650 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 4651 | struct bp_location *loc; |
d983da9c | 4652 | |
3a5c3e22 | 4653 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 4654 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 4655 | { |
3a5c3e22 | 4656 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4657 | { |
3a5c3e22 PA |
4658 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4659 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4660 | |
4661 | if (newaddr == start) | |
4662 | { | |
3a5c3e22 | 4663 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4664 | break; |
4665 | } | |
4666 | } | |
4667 | /* Exact match not required. Within range is sufficient. */ | |
4668 | else if (target_watchpoint_addr_within_range (¤t_target, | |
4669 | addr, loc->address, | |
4670 | loc->length)) | |
4671 | { | |
3a5c3e22 | 4672 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4673 | break; |
4674 | } | |
4675 | } | |
d983da9c DJ |
4676 | } |
4677 | ||
4678 | return 1; | |
4679 | } | |
4680 | ||
c906108c SS |
4681 | /* Possible return values for watchpoint_check (this can't be an enum |
4682 | because of check_errors). */ | |
4683 | /* The watchpoint has been deleted. */ | |
4684 | #define WP_DELETED 1 | |
4685 | /* The value has changed. */ | |
4686 | #define WP_VALUE_CHANGED 2 | |
4687 | /* The value has not changed. */ | |
4688 | #define WP_VALUE_NOT_CHANGED 3 | |
60e1c644 PA |
4689 | /* Ignore this watchpoint, no matter if the value changed or not. */ |
4690 | #define WP_IGNORE 4 | |
c906108c SS |
4691 | |
4692 | #define BP_TEMPFLAG 1 | |
4693 | #define BP_HARDWAREFLAG 2 | |
4694 | ||
4a64f543 MS |
4695 | /* Evaluate watchpoint condition expression and check if its value |
4696 | changed. | |
553e4c11 JB |
4697 | |
4698 | P should be a pointer to struct bpstat, but is defined as a void * | |
4699 | in order for this function to be usable with catch_errors. */ | |
c906108c SS |
4700 | |
4701 | static int | |
4efb68b1 | 4702 | watchpoint_check (void *p) |
c906108c SS |
4703 | { |
4704 | bpstat bs = (bpstat) p; | |
3a5c3e22 | 4705 | struct watchpoint *b; |
c906108c SS |
4706 | struct frame_info *fr; |
4707 | int within_current_scope; | |
4708 | ||
f431efe5 | 4709 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4710 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4711 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4712 | |
f6bc2008 PA |
4713 | /* If this is a local watchpoint, we only want to check if the |
4714 | watchpoint frame is in scope if the current thread is the thread | |
4715 | that was used to create the watchpoint. */ | |
4716 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4717 | return WP_IGNORE; |
f6bc2008 | 4718 | |
c906108c SS |
4719 | if (b->exp_valid_block == NULL) |
4720 | within_current_scope = 1; | |
4721 | else | |
4722 | { | |
edb3359d DJ |
4723 | struct frame_info *frame = get_current_frame (); |
4724 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4725 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4726 | ||
4a64f543 MS |
4727 | /* in_function_epilogue_p() returns a non-zero value if we're |
4728 | still in the function but the stack frame has already been | |
4729 | invalidated. Since we can't rely on the values of local | |
4730 | variables after the stack has been destroyed, we are treating | |
4731 | the watchpoint in that state as `not changed' without further | |
4732 | checking. Don't mark watchpoints as changed if the current | |
4733 | frame is in an epilogue - even if they are in some other | |
4734 | frame, our view of the stack is likely to be wrong and | |
4735 | frame_find_by_id could error out. */ | |
a0f49112 | 4736 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) |
60e1c644 | 4737 | return WP_IGNORE; |
a0f49112 | 4738 | |
101dcfbe | 4739 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 4740 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
4741 | |
4742 | /* If we've gotten confused in the unwinder, we might have | |
4743 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
4744 | if (within_current_scope) |
4745 | { | |
4746 | struct symbol *function; | |
4747 | ||
4748 | function = get_frame_function (fr); | |
4749 | if (function == NULL | |
4750 | || !contained_in (b->exp_valid_block, | |
4751 | SYMBOL_BLOCK_VALUE (function))) | |
4752 | within_current_scope = 0; | |
4753 | } | |
69fbadd5 | 4754 | |
edb3359d | 4755 | if (within_current_scope) |
c906108c SS |
4756 | /* If we end up stopping, the current frame will get selected |
4757 | in normal_stop. So this call to select_frame won't affect | |
4758 | the user. */ | |
0f7d239c | 4759 | select_frame (fr); |
c906108c | 4760 | } |
c5aa993b | 4761 | |
c906108c SS |
4762 | if (within_current_scope) |
4763 | { | |
4a64f543 MS |
4764 | /* We use value_{,free_to_}mark because it could be a *long* |
4765 | time before we return to the command level and call | |
4766 | free_all_values. We can't call free_all_values because we | |
4767 | might be in the middle of evaluating a function call. */ | |
c906108c | 4768 | |
0cf6dd15 | 4769 | int pc = 0; |
9c06b0b4 | 4770 | struct value *mark; |
fa4727a6 DJ |
4771 | struct value *new_val; |
4772 | ||
3a5c3e22 | 4773 | if (is_masked_watchpoint (&b->base)) |
9c06b0b4 TJB |
4774 | /* Since we don't know the exact trigger address (from |
4775 | stopped_data_address), just tell the user we've triggered | |
4776 | a mask watchpoint. */ | |
4777 | return WP_VALUE_CHANGED; | |
4778 | ||
4779 | mark = value_mark (); | |
0cf6dd15 | 4780 | fetch_subexp_value (b->exp, &pc, &new_val, NULL, NULL); |
218d2fc6 | 4781 | |
4a64f543 MS |
4782 | /* We use value_equal_contents instead of value_equal because |
4783 | the latter coerces an array to a pointer, thus comparing just | |
4784 | the address of the array instead of its contents. This is | |
4785 | not what we want. */ | |
fa4727a6 | 4786 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 4787 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 4788 | { |
fa4727a6 DJ |
4789 | if (new_val != NULL) |
4790 | { | |
4791 | release_value (new_val); | |
4792 | value_free_to_mark (mark); | |
4793 | } | |
c906108c SS |
4794 | bs->old_val = b->val; |
4795 | b->val = new_val; | |
fa4727a6 | 4796 | b->val_valid = 1; |
c906108c SS |
4797 | return WP_VALUE_CHANGED; |
4798 | } | |
4799 | else | |
4800 | { | |
60e1c644 | 4801 | /* Nothing changed. */ |
c906108c | 4802 | value_free_to_mark (mark); |
c906108c SS |
4803 | return WP_VALUE_NOT_CHANGED; |
4804 | } | |
4805 | } | |
4806 | else | |
4807 | { | |
79a45e25 PA |
4808 | struct ui_out *uiout = current_uiout; |
4809 | ||
c906108c | 4810 | /* This seems like the only logical thing to do because |
c5aa993b JM |
4811 | if we temporarily ignored the watchpoint, then when |
4812 | we reenter the block in which it is valid it contains | |
4813 | garbage (in the case of a function, it may have two | |
4814 | garbage values, one before and one after the prologue). | |
4815 | So we can't even detect the first assignment to it and | |
4816 | watch after that (since the garbage may or may not equal | |
4817 | the first value assigned). */ | |
348d480f PA |
4818 | /* We print all the stop information in |
4819 | breakpoint_ops->print_it, but in this case, by the time we | |
4820 | call breakpoint_ops->print_it this bp will be deleted | |
4821 | already. So we have no choice but print the information | |
4822 | here. */ | |
9dc5e2a9 | 4823 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
4824 | ui_out_field_string |
4825 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 4826 | ui_out_text (uiout, "\nWatchpoint "); |
3a5c3e22 | 4827 | ui_out_field_int (uiout, "wpnum", b->base.number); |
3e43a32a MS |
4828 | ui_out_text (uiout, |
4829 | " deleted because the program has left the block in\n\ | |
8b93c638 | 4830 | which its expression is valid.\n"); |
4ce44c66 | 4831 | |
cdac0397 | 4832 | /* Make sure the watchpoint's commands aren't executed. */ |
3a5c3e22 | 4833 | decref_counted_command_line (&b->base.commands); |
d0fb5eae | 4834 | watchpoint_del_at_next_stop (b); |
c906108c SS |
4835 | |
4836 | return WP_DELETED; | |
4837 | } | |
4838 | } | |
4839 | ||
18a18393 | 4840 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
4841 | breakpoint location BL. This function does not check if we should |
4842 | stop, only if BL explains the stop. */ | |
4843 | ||
18a18393 | 4844 | static int |
6c95b8df | 4845 | bpstat_check_location (const struct bp_location *bl, |
09ac7c10 TT |
4846 | struct address_space *aspace, CORE_ADDR bp_addr, |
4847 | const struct target_waitstatus *ws) | |
18a18393 VP |
4848 | { |
4849 | struct breakpoint *b = bl->owner; | |
4850 | ||
348d480f | 4851 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
4852 | gdb_assert (b != NULL); |
4853 | ||
09ac7c10 | 4854 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
4855 | } |
4856 | ||
3a5c3e22 PA |
4857 | /* Determine if the watched values have actually changed, and we |
4858 | should stop. If not, set BS->stop to 0. */ | |
4859 | ||
18a18393 VP |
4860 | static void |
4861 | bpstat_check_watchpoint (bpstat bs) | |
4862 | { | |
2bdf28a0 | 4863 | const struct bp_location *bl; |
3a5c3e22 | 4864 | struct watchpoint *b; |
2bdf28a0 JK |
4865 | |
4866 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 4867 | bl = bs->bp_location_at; |
2bdf28a0 | 4868 | gdb_assert (bl != NULL); |
3a5c3e22 | 4869 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 4870 | gdb_assert (b != NULL); |
18a18393 | 4871 | |
18a18393 | 4872 | { |
18a18393 VP |
4873 | int must_check_value = 0; |
4874 | ||
3a5c3e22 | 4875 | if (b->base.type == bp_watchpoint) |
18a18393 VP |
4876 | /* For a software watchpoint, we must always check the |
4877 | watched value. */ | |
4878 | must_check_value = 1; | |
4879 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
4880 | /* We have a hardware watchpoint (read, write, or access) | |
4881 | and the target earlier reported an address watched by | |
4882 | this watchpoint. */ | |
4883 | must_check_value = 1; | |
4884 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
3a5c3e22 | 4885 | && b->base.type == bp_hardware_watchpoint) |
18a18393 VP |
4886 | /* We were stopped by a hardware watchpoint, but the target could |
4887 | not report the data address. We must check the watchpoint's | |
4888 | value. Access and read watchpoints are out of luck; without | |
4889 | a data address, we can't figure it out. */ | |
4890 | must_check_value = 1; | |
3a5c3e22 | 4891 | |
18a18393 VP |
4892 | if (must_check_value) |
4893 | { | |
3e43a32a MS |
4894 | char *message |
4895 | = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
3a5c3e22 | 4896 | b->base.number); |
18a18393 VP |
4897 | struct cleanup *cleanups = make_cleanup (xfree, message); |
4898 | int e = catch_errors (watchpoint_check, bs, message, | |
4899 | RETURN_MASK_ALL); | |
4900 | do_cleanups (cleanups); | |
4901 | switch (e) | |
4902 | { | |
4903 | case WP_DELETED: | |
4904 | /* We've already printed what needs to be printed. */ | |
4905 | bs->print_it = print_it_done; | |
4906 | /* Stop. */ | |
4907 | break; | |
60e1c644 PA |
4908 | case WP_IGNORE: |
4909 | bs->print_it = print_it_noop; | |
4910 | bs->stop = 0; | |
4911 | break; | |
18a18393 | 4912 | case WP_VALUE_CHANGED: |
3a5c3e22 | 4913 | if (b->base.type == bp_read_watchpoint) |
18a18393 | 4914 | { |
85d721b8 PA |
4915 | /* There are two cases to consider here: |
4916 | ||
4a64f543 | 4917 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
4918 | In that case, trust the target, and always report |
4919 | the watchpoint hit to the user. Even though | |
4920 | reads don't cause value changes, the value may | |
4921 | have changed since the last time it was read, and | |
4922 | since we're not trapping writes, we will not see | |
4923 | those, and as such we should ignore our notion of | |
4924 | old value. | |
4925 | ||
4a64f543 | 4926 | 2. We're watching the triggered memory for both |
85d721b8 PA |
4927 | reads and writes. There are two ways this may |
4928 | happen: | |
4929 | ||
4a64f543 | 4930 | 2.1. This is a target that can't break on data |
85d721b8 PA |
4931 | reads only, but can break on accesses (reads or |
4932 | writes), such as e.g., x86. We detect this case | |
4933 | at the time we try to insert read watchpoints. | |
4934 | ||
4a64f543 | 4935 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
4936 | watchpoints, but, the user set an access or write |
4937 | watchpoint watching the same memory as this read | |
4938 | watchpoint. | |
4939 | ||
4940 | If we're watching memory writes as well as reads, | |
4941 | ignore watchpoint hits when we find that the | |
4942 | value hasn't changed, as reads don't cause | |
4943 | changes. This still gives false positives when | |
4944 | the program writes the same value to memory as | |
4945 | what there was already in memory (we will confuse | |
4946 | it for a read), but it's much better than | |
4947 | nothing. */ | |
4948 | ||
4949 | int other_write_watchpoint = 0; | |
4950 | ||
4951 | if (bl->watchpoint_type == hw_read) | |
4952 | { | |
4953 | struct breakpoint *other_b; | |
4954 | ||
4955 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
4956 | if (other_b->type == bp_hardware_watchpoint |
4957 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 4958 | { |
3a5c3e22 PA |
4959 | struct watchpoint *other_w = |
4960 | (struct watchpoint *) other_b; | |
4961 | ||
4962 | if (other_w->watchpoint_triggered | |
4963 | == watch_triggered_yes) | |
4964 | { | |
4965 | other_write_watchpoint = 1; | |
4966 | break; | |
4967 | } | |
85d721b8 PA |
4968 | } |
4969 | } | |
4970 | ||
4971 | if (other_write_watchpoint | |
4972 | || bl->watchpoint_type == hw_access) | |
4973 | { | |
4974 | /* We're watching the same memory for writes, | |
4975 | and the value changed since the last time we | |
4976 | updated it, so this trap must be for a write. | |
4977 | Ignore it. */ | |
4978 | bs->print_it = print_it_noop; | |
4979 | bs->stop = 0; | |
4980 | } | |
18a18393 VP |
4981 | } |
4982 | break; | |
4983 | case WP_VALUE_NOT_CHANGED: | |
3a5c3e22 PA |
4984 | if (b->base.type == bp_hardware_watchpoint |
4985 | || b->base.type == bp_watchpoint) | |
18a18393 VP |
4986 | { |
4987 | /* Don't stop: write watchpoints shouldn't fire if | |
4988 | the value hasn't changed. */ | |
4989 | bs->print_it = print_it_noop; | |
4990 | bs->stop = 0; | |
4991 | } | |
4992 | /* Stop. */ | |
4993 | break; | |
4994 | default: | |
4995 | /* Can't happen. */ | |
4996 | case 0: | |
4997 | /* Error from catch_errors. */ | |
3a5c3e22 | 4998 | printf_filtered (_("Watchpoint %d deleted.\n"), b->base.number); |
d0fb5eae | 4999 | watchpoint_del_at_next_stop (b); |
18a18393 VP |
5000 | /* We've already printed what needs to be printed. */ |
5001 | bs->print_it = print_it_done; | |
5002 | break; | |
5003 | } | |
5004 | } | |
5005 | else /* must_check_value == 0 */ | |
5006 | { | |
5007 | /* This is a case where some watchpoint(s) triggered, but | |
5008 | not at the address of this watchpoint, or else no | |
5009 | watchpoint triggered after all. So don't print | |
5010 | anything for this watchpoint. */ | |
5011 | bs->print_it = print_it_noop; | |
5012 | bs->stop = 0; | |
5013 | } | |
5014 | } | |
5015 | } | |
5016 | ||
5017 | ||
5018 | /* Check conditions (condition proper, frame, thread and ignore count) | |
5019 | of breakpoint referred to by BS. If we should not stop for this | |
5020 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5021 | |
18a18393 VP |
5022 | static void |
5023 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
5024 | { | |
5025 | int thread_id = pid_to_thread_id (ptid); | |
2bdf28a0 JK |
5026 | const struct bp_location *bl; |
5027 | struct breakpoint *b; | |
5028 | ||
5029 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5030 | bl = bs->bp_location_at; |
2bdf28a0 | 5031 | gdb_assert (bl != NULL); |
f431efe5 | 5032 | b = bs->breakpoint_at; |
2bdf28a0 | 5033 | gdb_assert (b != NULL); |
18a18393 | 5034 | |
b775012e LM |
5035 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5036 | need to do so again since GDB does not know if we stopped due to a | |
5037 | breakpoint or a single step breakpoint. */ | |
5038 | ||
18a18393 | 5039 | if (frame_id_p (b->frame_id) |
edb3359d | 5040 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 VP |
5041 | bs->stop = 0; |
5042 | else if (bs->stop) | |
5043 | { | |
5044 | int value_is_zero = 0; | |
60e1c644 PA |
5045 | struct expression *cond; |
5046 | ||
7371cf6d PM |
5047 | /* Evaluate Python breakpoints that have a "stop" |
5048 | method implemented. */ | |
5049 | if (b->py_bp_object) | |
5050 | bs->stop = gdbpy_should_stop (b->py_bp_object); | |
5051 | ||
60e1c644 | 5052 | if (is_watchpoint (b)) |
3a5c3e22 PA |
5053 | { |
5054 | struct watchpoint *w = (struct watchpoint *) b; | |
5055 | ||
5056 | cond = w->cond_exp; | |
5057 | } | |
60e1c644 PA |
5058 | else |
5059 | cond = bl->cond; | |
5060 | ||
f431efe5 | 5061 | if (cond && b->disposition != disp_del_at_next_stop) |
18a18393 | 5062 | { |
60e1c644 | 5063 | int within_current_scope = 1; |
3a5c3e22 | 5064 | struct watchpoint * w; |
60e1c644 | 5065 | |
c5bc3a77 DJ |
5066 | /* We use value_mark and value_free_to_mark because it could |
5067 | be a long time before we return to the command level and | |
5068 | call free_all_values. We can't call free_all_values | |
5069 | because we might be in the middle of evaluating a | |
5070 | function call. */ | |
5071 | struct value *mark = value_mark (); | |
5072 | ||
3a5c3e22 PA |
5073 | if (is_watchpoint (b)) |
5074 | w = (struct watchpoint *) b; | |
5075 | else | |
5076 | w = NULL; | |
5077 | ||
edb3359d DJ |
5078 | /* Need to select the frame, with all that implies so that |
5079 | the conditions will have the right context. Because we | |
5080 | use the frame, we will not see an inlined function's | |
5081 | variables when we arrive at a breakpoint at the start | |
5082 | of the inlined function; the current frame will be the | |
5083 | call site. */ | |
3a5c3e22 | 5084 | if (w == NULL || w->cond_exp_valid_block == NULL) |
60e1c644 PA |
5085 | select_frame (get_current_frame ()); |
5086 | else | |
5087 | { | |
5088 | struct frame_info *frame; | |
5089 | ||
5090 | /* For local watchpoint expressions, which particular | |
5091 | instance of a local is being watched matters, so we | |
5092 | keep track of the frame to evaluate the expression | |
5093 | in. To evaluate the condition however, it doesn't | |
5094 | really matter which instantiation of the function | |
5095 | where the condition makes sense triggers the | |
5096 | watchpoint. This allows an expression like "watch | |
5097 | global if q > 10" set in `func', catch writes to | |
5098 | global on all threads that call `func', or catch | |
5099 | writes on all recursive calls of `func' by a single | |
5100 | thread. We simply always evaluate the condition in | |
5101 | the innermost frame that's executing where it makes | |
5102 | sense to evaluate the condition. It seems | |
5103 | intuitive. */ | |
3a5c3e22 | 5104 | frame = block_innermost_frame (w->cond_exp_valid_block); |
60e1c644 PA |
5105 | if (frame != NULL) |
5106 | select_frame (frame); | |
5107 | else | |
5108 | within_current_scope = 0; | |
5109 | } | |
5110 | if (within_current_scope) | |
5111 | value_is_zero | |
5112 | = catch_errors (breakpoint_cond_eval, cond, | |
5113 | "Error in testing breakpoint condition:\n", | |
5114 | RETURN_MASK_ALL); | |
5115 | else | |
5116 | { | |
5117 | warning (_("Watchpoint condition cannot be tested " | |
5118 | "in the current scope")); | |
5119 | /* If we failed to set the right context for this | |
5120 | watchpoint, unconditionally report it. */ | |
5121 | value_is_zero = 0; | |
5122 | } | |
4a64f543 | 5123 | /* FIXME-someday, should give breakpoint #. */ |
c5bc3a77 | 5124 | value_free_to_mark (mark); |
18a18393 | 5125 | } |
60e1c644 PA |
5126 | |
5127 | if (cond && value_is_zero) | |
18a18393 VP |
5128 | { |
5129 | bs->stop = 0; | |
5130 | } | |
5131 | else if (b->thread != -1 && b->thread != thread_id) | |
5132 | { | |
5133 | bs->stop = 0; | |
5134 | } | |
5135 | else if (b->ignore_count > 0) | |
5136 | { | |
5137 | b->ignore_count--; | |
18a18393 | 5138 | bs->stop = 0; |
4a64f543 | 5139 | /* Increase the hit count even though we don't stop. */ |
18a18393 | 5140 | ++(b->hit_count); |
8d3788bd | 5141 | observer_notify_breakpoint_modified (b); |
18a18393 VP |
5142 | } |
5143 | } | |
5144 | } | |
5145 | ||
5146 | ||
9709f61c | 5147 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 5148 | BP_ADDR in thread PTID. |
c906108c | 5149 | |
d983da9c | 5150 | Determine whether we stopped at a breakpoint, etc, or whether we |
4a64f543 MS |
5151 | don't understand this stop. Result is a chain of bpstat's such |
5152 | that: | |
c906108c | 5153 | |
c5aa993b | 5154 | if we don't understand the stop, the result is a null pointer. |
c906108c | 5155 | |
c5aa993b | 5156 | if we understand why we stopped, the result is not null. |
c906108c | 5157 | |
c5aa993b JM |
5158 | Each element of the chain refers to a particular breakpoint or |
5159 | watchpoint at which we have stopped. (We may have stopped for | |
5160 | several reasons concurrently.) | |
c906108c | 5161 | |
c5aa993b JM |
5162 | Each element of the chain has valid next, breakpoint_at, |
5163 | commands, FIXME??? fields. */ | |
c906108c SS |
5164 | |
5165 | bpstat | |
6c95b8df | 5166 | bpstat_stop_status (struct address_space *aspace, |
09ac7c10 TT |
5167 | CORE_ADDR bp_addr, ptid_t ptid, |
5168 | const struct target_waitstatus *ws) | |
c906108c | 5169 | { |
0d381245 | 5170 | struct breakpoint *b = NULL; |
afe38095 | 5171 | struct bp_location *bl; |
20874c92 | 5172 | struct bp_location *loc; |
5760d0ab JK |
5173 | /* First item of allocated bpstat's. */ |
5174 | bpstat bs_head = NULL, *bs_link = &bs_head; | |
c906108c | 5175 | /* Pointer to the last thing in the chain currently. */ |
5760d0ab | 5176 | bpstat bs; |
20874c92 | 5177 | int ix; |
429374b8 | 5178 | int need_remove_insert; |
f431efe5 | 5179 | int removed_any; |
c906108c | 5180 | |
f431efe5 PA |
5181 | /* First, build the bpstat chain with locations that explain a |
5182 | target stop, while being careful to not set the target running, | |
5183 | as that may invalidate locations (in particular watchpoint | |
5184 | locations are recreated). Resuming will happen here with | |
5185 | breakpoint conditions or watchpoint expressions that include | |
5186 | inferior function calls. */ | |
c5aa993b | 5187 | |
429374b8 JK |
5188 | ALL_BREAKPOINTS (b) |
5189 | { | |
5190 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) | |
5191 | continue; | |
a5606eee | 5192 | |
429374b8 JK |
5193 | for (bl = b->loc; bl != NULL; bl = bl->next) |
5194 | { | |
4a64f543 MS |
5195 | /* For hardware watchpoints, we look only at the first |
5196 | location. The watchpoint_check function will work on the | |
5197 | entire expression, not the individual locations. For | |
5198 | read watchpoints, the watchpoints_triggered function has | |
5199 | checked all locations already. */ | |
429374b8 JK |
5200 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5201 | break; | |
18a18393 | 5202 | |
f6592439 | 5203 | if (!bl->enabled || bl->shlib_disabled) |
429374b8 | 5204 | continue; |
c5aa993b | 5205 | |
09ac7c10 | 5206 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5207 | continue; |
c5aa993b | 5208 | |
4a64f543 MS |
5209 | /* Come here if it's a watchpoint, or if the break address |
5210 | matches. */ | |
c5aa993b | 5211 | |
4a64f543 MS |
5212 | bs = bpstat_alloc (bl, &bs_link); /* Alloc a bpstat to |
5213 | explain stop. */ | |
c5aa993b | 5214 | |
f431efe5 PA |
5215 | /* Assume we stop. Should we find a watchpoint that is not |
5216 | actually triggered, or if the condition of the breakpoint | |
5217 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5218 | bs->stop = 1; |
5219 | bs->print = 1; | |
d983da9c | 5220 | |
f431efe5 PA |
5221 | /* If this is a scope breakpoint, mark the associated |
5222 | watchpoint as triggered so that we will handle the | |
5223 | out-of-scope event. We'll get to the watchpoint next | |
5224 | iteration. */ | |
d0fb5eae | 5225 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5226 | { |
5227 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5228 | ||
5229 | w->watchpoint_triggered = watch_triggered_yes; | |
5230 | } | |
f431efe5 PA |
5231 | } |
5232 | } | |
5233 | ||
5234 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
5235 | { | |
f1310107 | 5236 | if (breakpoint_location_address_match (loc, aspace, bp_addr)) |
f431efe5 | 5237 | { |
5760d0ab | 5238 | bs = bpstat_alloc (loc, &bs_link); |
f431efe5 PA |
5239 | /* For hits of moribund locations, we should just proceed. */ |
5240 | bs->stop = 0; | |
5241 | bs->print = 0; | |
5242 | bs->print_it = print_it_noop; | |
5243 | } | |
5244 | } | |
5245 | ||
edcc5120 TT |
5246 | /* A bit of special processing for shlib breakpoints. We need to |
5247 | process solib loading here, so that the lists of loaded and | |
5248 | unloaded libraries are correct before we handle "catch load" and | |
5249 | "catch unload". */ | |
5250 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5251 | { | |
5d268276 | 5252 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5253 | { |
5254 | handle_solib_event (); | |
5255 | break; | |
5256 | } | |
5257 | } | |
5258 | ||
f431efe5 PA |
5259 | /* Now go through the locations that caused the target to stop, and |
5260 | check whether we're interested in reporting this stop to higher | |
5261 | layers, or whether we should resume the target transparently. */ | |
5262 | ||
5263 | removed_any = 0; | |
5264 | ||
5760d0ab | 5265 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5266 | { |
5267 | if (!bs->stop) | |
5268 | continue; | |
5269 | ||
f431efe5 | 5270 | b = bs->breakpoint_at; |
348d480f PA |
5271 | b->ops->check_status (bs); |
5272 | if (bs->stop) | |
28010a5d | 5273 | { |
348d480f | 5274 | bpstat_check_breakpoint_conditions (bs, ptid); |
f431efe5 | 5275 | |
429374b8 JK |
5276 | if (bs->stop) |
5277 | { | |
5278 | ++(b->hit_count); | |
8d3788bd | 5279 | observer_notify_breakpoint_modified (b); |
c906108c | 5280 | |
4a64f543 | 5281 | /* We will stop here. */ |
429374b8 JK |
5282 | if (b->disposition == disp_disable) |
5283 | { | |
816338b5 SS |
5284 | --(b->enable_count); |
5285 | if (b->enable_count <= 0 | |
5286 | && b->enable_state != bp_permanent) | |
429374b8 | 5287 | b->enable_state = bp_disabled; |
f431efe5 | 5288 | removed_any = 1; |
429374b8 JK |
5289 | } |
5290 | if (b->silent) | |
5291 | bs->print = 0; | |
5292 | bs->commands = b->commands; | |
9add0f1b | 5293 | incref_counted_command_line (bs->commands); |
abf85f46 JK |
5294 | if (command_line_is_silent (bs->commands |
5295 | ? bs->commands->commands : NULL)) | |
5296 | bs->print = 0; | |
429374b8 JK |
5297 | } |
5298 | ||
348d480f | 5299 | } |
a9b3a50f PA |
5300 | |
5301 | /* Print nothing for this entry if we don't stop or don't | |
5302 | print. */ | |
5303 | if (!bs->stop || !bs->print) | |
5304 | bs->print_it = print_it_noop; | |
429374b8 | 5305 | } |
876fa593 | 5306 | |
d983da9c DJ |
5307 | /* If we aren't stopping, the value of some hardware watchpoint may |
5308 | not have changed, but the intermediate memory locations we are | |
5309 | watching may have. Don't bother if we're stopping; this will get | |
5310 | done later. */ | |
d832cb68 | 5311 | need_remove_insert = 0; |
5760d0ab JK |
5312 | if (! bpstat_causes_stop (bs_head)) |
5313 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5314 | if (!bs->stop |
f431efe5 PA |
5315 | && bs->breakpoint_at |
5316 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5317 | { |
3a5c3e22 PA |
5318 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5319 | ||
5320 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5321 | need_remove_insert = 1; |
d983da9c DJ |
5322 | } |
5323 | ||
d832cb68 | 5324 | if (need_remove_insert) |
2d134ed3 | 5325 | update_global_location_list (1); |
f431efe5 PA |
5326 | else if (removed_any) |
5327 | update_global_location_list (0); | |
d832cb68 | 5328 | |
5760d0ab | 5329 | return bs_head; |
c906108c | 5330 | } |
628fe4e4 JK |
5331 | |
5332 | static void | |
5333 | handle_jit_event (void) | |
5334 | { | |
5335 | struct frame_info *frame; | |
5336 | struct gdbarch *gdbarch; | |
5337 | ||
5338 | /* Switch terminal for any messages produced by | |
5339 | breakpoint_re_set. */ | |
5340 | target_terminal_ours_for_output (); | |
5341 | ||
5342 | frame = get_current_frame (); | |
5343 | gdbarch = get_frame_arch (frame); | |
5344 | ||
5345 | jit_event_handler (gdbarch); | |
5346 | ||
5347 | target_terminal_inferior (); | |
5348 | } | |
5349 | ||
edcc5120 TT |
5350 | /* Handle an solib event by calling solib_add. */ |
5351 | ||
5352 | void | |
5353 | handle_solib_event (void) | |
5354 | { | |
5355 | clear_program_space_solib_cache (current_inferior ()->pspace); | |
5356 | ||
5357 | /* Check for any newly added shared libraries if we're supposed to | |
5358 | be adding them automatically. Switch terminal for any messages | |
5359 | produced by breakpoint_re_set. */ | |
5360 | target_terminal_ours_for_output (); | |
5361 | #ifdef SOLIB_ADD | |
5362 | SOLIB_ADD (NULL, 0, ¤t_target, auto_solib_add); | |
5363 | #else | |
5364 | solib_add (NULL, 0, ¤t_target, auto_solib_add); | |
5365 | #endif | |
5366 | target_terminal_inferior (); | |
5367 | } | |
5368 | ||
628fe4e4 JK |
5369 | /* Prepare WHAT final decision for infrun. */ |
5370 | ||
5371 | /* Decide what infrun needs to do with this bpstat. */ | |
5372 | ||
c906108c | 5373 | struct bpstat_what |
0e30163f | 5374 | bpstat_what (bpstat bs_head) |
c906108c | 5375 | { |
c906108c | 5376 | struct bpstat_what retval; |
628fe4e4 | 5377 | int jit_event = 0; |
0e30163f | 5378 | bpstat bs; |
c906108c | 5379 | |
628fe4e4 | 5380 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5381 | retval.call_dummy = STOP_NONE; |
186c406b | 5382 | retval.is_longjmp = 0; |
628fe4e4 | 5383 | |
0e30163f | 5384 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5385 | { |
628fe4e4 JK |
5386 | /* Extract this BS's action. After processing each BS, we check |
5387 | if its action overrides all we've seem so far. */ | |
5388 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5389 | enum bptype bptype; | |
5390 | ||
c906108c | 5391 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5392 | { |
5393 | /* I suspect this can happen if it was a momentary | |
5394 | breakpoint which has since been deleted. */ | |
5395 | bptype = bp_none; | |
5396 | } | |
20874c92 | 5397 | else |
f431efe5 | 5398 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5399 | |
5400 | switch (bptype) | |
c906108c SS |
5401 | { |
5402 | case bp_none: | |
628fe4e4 | 5403 | break; |
c906108c SS |
5404 | case bp_breakpoint: |
5405 | case bp_hardware_breakpoint: | |
5406 | case bp_until: | |
5407 | case bp_finish: | |
a9b3a50f | 5408 | case bp_shlib_event: |
c906108c SS |
5409 | if (bs->stop) |
5410 | { | |
5411 | if (bs->print) | |
628fe4e4 | 5412 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5413 | else |
628fe4e4 | 5414 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5415 | } |
5416 | else | |
628fe4e4 | 5417 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5418 | break; |
5419 | case bp_watchpoint: | |
5420 | case bp_hardware_watchpoint: | |
5421 | case bp_read_watchpoint: | |
5422 | case bp_access_watchpoint: | |
5423 | if (bs->stop) | |
5424 | { | |
5425 | if (bs->print) | |
628fe4e4 | 5426 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5427 | else |
628fe4e4 | 5428 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5429 | } |
5430 | else | |
628fe4e4 JK |
5431 | { |
5432 | /* There was a watchpoint, but we're not stopping. | |
5433 | This requires no further action. */ | |
5434 | } | |
c906108c SS |
5435 | break; |
5436 | case bp_longjmp: | |
e2e4d78b | 5437 | case bp_longjmp_call_dummy: |
186c406b | 5438 | case bp_exception: |
628fe4e4 | 5439 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; |
e2e4d78b | 5440 | retval.is_longjmp = bptype != bp_exception; |
c906108c SS |
5441 | break; |
5442 | case bp_longjmp_resume: | |
186c406b | 5443 | case bp_exception_resume: |
628fe4e4 | 5444 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; |
186c406b | 5445 | retval.is_longjmp = bptype == bp_longjmp_resume; |
c906108c SS |
5446 | break; |
5447 | case bp_step_resume: | |
5448 | if (bs->stop) | |
628fe4e4 JK |
5449 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5450 | else | |
c906108c | 5451 | { |
628fe4e4 JK |
5452 | /* It is for the wrong frame. */ |
5453 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5454 | } |
c906108c | 5455 | break; |
2c03e5be PA |
5456 | case bp_hp_step_resume: |
5457 | if (bs->stop) | |
5458 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5459 | else | |
5460 | { | |
5461 | /* It is for the wrong frame. */ | |
5462 | this_action = BPSTAT_WHAT_SINGLE; | |
5463 | } | |
5464 | break; | |
c906108c | 5465 | case bp_watchpoint_scope: |
c4093a6a | 5466 | case bp_thread_event: |
1900040c | 5467 | case bp_overlay_event: |
0fd8e87f | 5468 | case bp_longjmp_master: |
aa7d318d | 5469 | case bp_std_terminate_master: |
186c406b | 5470 | case bp_exception_master: |
628fe4e4 | 5471 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5472 | break; |
ce78b96d | 5473 | case bp_catchpoint: |
c5aa993b JM |
5474 | if (bs->stop) |
5475 | { | |
5476 | if (bs->print) | |
628fe4e4 | 5477 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5478 | else |
628fe4e4 | 5479 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5480 | } |
5481 | else | |
628fe4e4 JK |
5482 | { |
5483 | /* There was a catchpoint, but we're not stopping. | |
5484 | This requires no further action. */ | |
5485 | } | |
5486 | break; | |
628fe4e4 JK |
5487 | case bp_jit_event: |
5488 | jit_event = 1; | |
5489 | this_action = BPSTAT_WHAT_SINGLE; | |
c5aa993b | 5490 | break; |
c906108c | 5491 | case bp_call_dummy: |
53a5351d JM |
5492 | /* Make sure the action is stop (silent or noisy), |
5493 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5494 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5495 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5496 | break; |
5497 | case bp_std_terminate: | |
5498 | /* Make sure the action is stop (silent or noisy), | |
5499 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5500 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5501 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5502 | break; |
1042e4c0 | 5503 | case bp_tracepoint: |
7a697b8d | 5504 | case bp_fast_tracepoint: |
0fb4aa4b | 5505 | case bp_static_tracepoint: |
1042e4c0 SS |
5506 | /* Tracepoint hits should not be reported back to GDB, and |
5507 | if one got through somehow, it should have been filtered | |
5508 | out already. */ | |
5509 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5510 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5511 | break; |
5512 | case bp_gnu_ifunc_resolver: | |
5513 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5514 | this_action = BPSTAT_WHAT_SINGLE; | |
5515 | break; | |
5516 | case bp_gnu_ifunc_resolver_return: | |
5517 | /* The breakpoint will be removed, execution will restart from the | |
5518 | PC of the former breakpoint. */ | |
5519 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5520 | break; | |
e7e0cddf SS |
5521 | |
5522 | case bp_dprintf: | |
5523 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5524 | break; | |
5525 | ||
628fe4e4 JK |
5526 | default: |
5527 | internal_error (__FILE__, __LINE__, | |
5528 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5529 | } |
628fe4e4 JK |
5530 | |
5531 | retval.main_action = max (retval.main_action, this_action); | |
c906108c | 5532 | } |
628fe4e4 | 5533 | |
0e30163f JK |
5534 | /* These operations may affect the bs->breakpoint_at state so they are |
5535 | delayed after MAIN_ACTION is decided above. */ | |
5536 | ||
628fe4e4 JK |
5537 | if (jit_event) |
5538 | { | |
5539 | if (debug_infrun) | |
5540 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_jit_event\n"); | |
5541 | ||
5542 | handle_jit_event (); | |
5543 | } | |
5544 | ||
0e30163f JK |
5545 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5546 | { | |
5547 | struct breakpoint *b = bs->breakpoint_at; | |
5548 | ||
5549 | if (b == NULL) | |
5550 | continue; | |
5551 | switch (b->type) | |
5552 | { | |
5553 | case bp_gnu_ifunc_resolver: | |
5554 | gnu_ifunc_resolver_stop (b); | |
5555 | break; | |
5556 | case bp_gnu_ifunc_resolver_return: | |
5557 | gnu_ifunc_resolver_return_stop (b); | |
5558 | break; | |
5559 | } | |
5560 | } | |
5561 | ||
c906108c SS |
5562 | return retval; |
5563 | } | |
5564 | ||
5565 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
5566 | without hardware support). This isn't related to a specific bpstat, | |
5567 | just to things like whether watchpoints are set. */ | |
5568 | ||
c5aa993b | 5569 | int |
fba45db2 | 5570 | bpstat_should_step (void) |
c906108c SS |
5571 | { |
5572 | struct breakpoint *b; | |
cc59ec59 | 5573 | |
c906108c | 5574 | ALL_BREAKPOINTS (b) |
717a8278 | 5575 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 5576 | return 1; |
c906108c SS |
5577 | return 0; |
5578 | } | |
5579 | ||
67822962 PA |
5580 | int |
5581 | bpstat_causes_stop (bpstat bs) | |
5582 | { | |
5583 | for (; bs != NULL; bs = bs->next) | |
5584 | if (bs->stop) | |
5585 | return 1; | |
5586 | ||
5587 | return 0; | |
5588 | } | |
5589 | ||
c906108c | 5590 | \f |
c5aa993b | 5591 | |
170b53b2 UW |
5592 | /* Compute a string of spaces suitable to indent the next line |
5593 | so it starts at the position corresponding to the table column | |
5594 | named COL_NAME in the currently active table of UIOUT. */ | |
5595 | ||
5596 | static char * | |
5597 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5598 | { | |
5599 | static char wrap_indent[80]; | |
5600 | int i, total_width, width, align; | |
5601 | char *text; | |
5602 | ||
5603 | total_width = 0; | |
5604 | for (i = 1; ui_out_query_field (uiout, i, &width, &align, &text); i++) | |
5605 | { | |
5606 | if (strcmp (text, col_name) == 0) | |
5607 | { | |
5608 | gdb_assert (total_width < sizeof wrap_indent); | |
5609 | memset (wrap_indent, ' ', total_width); | |
5610 | wrap_indent[total_width] = 0; | |
5611 | ||
5612 | return wrap_indent; | |
5613 | } | |
5614 | ||
5615 | total_width += width + 1; | |
5616 | } | |
5617 | ||
5618 | return NULL; | |
5619 | } | |
5620 | ||
b775012e LM |
5621 | /* Determine if the locations of this breakpoint will have their conditions |
5622 | evaluated by the target, host or a mix of both. Returns the following: | |
5623 | ||
5624 | "host": Host evals condition. | |
5625 | "host or target": Host or Target evals condition. | |
5626 | "target": Target evals condition. | |
5627 | */ | |
5628 | ||
5629 | static const char * | |
5630 | bp_condition_evaluator (struct breakpoint *b) | |
5631 | { | |
5632 | struct bp_location *bl; | |
5633 | char host_evals = 0; | |
5634 | char target_evals = 0; | |
5635 | ||
5636 | if (!b) | |
5637 | return NULL; | |
5638 | ||
5639 | if (!is_breakpoint (b)) | |
5640 | return NULL; | |
5641 | ||
5642 | if (gdb_evaluates_breakpoint_condition_p () | |
5643 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5644 | return condition_evaluation_host; | |
5645 | ||
5646 | for (bl = b->loc; bl; bl = bl->next) | |
5647 | { | |
5648 | if (bl->cond_bytecode) | |
5649 | target_evals++; | |
5650 | else | |
5651 | host_evals++; | |
5652 | } | |
5653 | ||
5654 | if (host_evals && target_evals) | |
5655 | return condition_evaluation_both; | |
5656 | else if (target_evals) | |
5657 | return condition_evaluation_target; | |
5658 | else | |
5659 | return condition_evaluation_host; | |
5660 | } | |
5661 | ||
5662 | /* Determine the breakpoint location's condition evaluator. This is | |
5663 | similar to bp_condition_evaluator, but for locations. */ | |
5664 | ||
5665 | static const char * | |
5666 | bp_location_condition_evaluator (struct bp_location *bl) | |
5667 | { | |
5668 | if (bl && !is_breakpoint (bl->owner)) | |
5669 | return NULL; | |
5670 | ||
5671 | if (gdb_evaluates_breakpoint_condition_p () | |
5672 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5673 | return condition_evaluation_host; | |
5674 | ||
5675 | if (bl && bl->cond_bytecode) | |
5676 | return condition_evaluation_target; | |
5677 | else | |
5678 | return condition_evaluation_host; | |
5679 | } | |
5680 | ||
859825b8 JK |
5681 | /* Print the LOC location out of the list of B->LOC locations. */ |
5682 | ||
170b53b2 UW |
5683 | static void |
5684 | print_breakpoint_location (struct breakpoint *b, | |
5685 | struct bp_location *loc) | |
0d381245 | 5686 | { |
79a45e25 | 5687 | struct ui_out *uiout = current_uiout; |
6c95b8df PA |
5688 | struct cleanup *old_chain = save_current_program_space (); |
5689 | ||
859825b8 JK |
5690 | if (loc != NULL && loc->shlib_disabled) |
5691 | loc = NULL; | |
5692 | ||
6c95b8df PA |
5693 | if (loc != NULL) |
5694 | set_current_program_space (loc->pspace); | |
5695 | ||
56435ebe TT |
5696 | if (b->display_canonical) |
5697 | ui_out_field_string (uiout, "what", b->addr_string); | |
2f202fde | 5698 | else if (loc && loc->symtab) |
0d381245 VP |
5699 | { |
5700 | struct symbol *sym | |
5701 | = find_pc_sect_function (loc->address, loc->section); | |
5702 | if (sym) | |
5703 | { | |
5704 | ui_out_text (uiout, "in "); | |
5705 | ui_out_field_string (uiout, "func", | |
5706 | SYMBOL_PRINT_NAME (sym)); | |
170b53b2 UW |
5707 | ui_out_text (uiout, " "); |
5708 | ui_out_wrap_hint (uiout, wrap_indent_at_field (uiout, "what")); | |
5709 | ui_out_text (uiout, "at "); | |
0d381245 | 5710 | } |
05cba821 JK |
5711 | ui_out_field_string (uiout, "file", |
5712 | symtab_to_filename_for_display (loc->symtab)); | |
0d381245 | 5713 | ui_out_text (uiout, ":"); |
05cba821 | 5714 | |
0d381245 | 5715 | if (ui_out_is_mi_like_p (uiout)) |
2f202fde JK |
5716 | ui_out_field_string (uiout, "fullname", |
5717 | symtab_to_fullname (loc->symtab)); | |
0d381245 | 5718 | |
f8eba3c6 | 5719 | ui_out_field_int (uiout, "line", loc->line_number); |
0d381245 | 5720 | } |
859825b8 | 5721 | else if (loc) |
0d381245 | 5722 | { |
f99d8bf4 PA |
5723 | struct ui_file *stb = mem_fileopen (); |
5724 | struct cleanup *stb_chain = make_cleanup_ui_file_delete (stb); | |
170b53b2 | 5725 | |
f99d8bf4 | 5726 | print_address_symbolic (loc->gdbarch, loc->address, stb, |
22e722e1 | 5727 | demangle, ""); |
0d381245 | 5728 | ui_out_field_stream (uiout, "at", stb); |
170b53b2 UW |
5729 | |
5730 | do_cleanups (stb_chain); | |
0d381245 | 5731 | } |
859825b8 JK |
5732 | else |
5733 | ui_out_field_string (uiout, "pending", b->addr_string); | |
6c95b8df | 5734 | |
b775012e LM |
5735 | if (loc && is_breakpoint (b) |
5736 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
5737 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
5738 | { | |
5739 | ui_out_text (uiout, " ("); | |
5740 | ui_out_field_string (uiout, "evaluated-by", | |
5741 | bp_location_condition_evaluator (loc)); | |
5742 | ui_out_text (uiout, ")"); | |
5743 | } | |
5744 | ||
6c95b8df | 5745 | do_cleanups (old_chain); |
0d381245 VP |
5746 | } |
5747 | ||
269b11a2 PA |
5748 | static const char * |
5749 | bptype_string (enum bptype type) | |
c906108c | 5750 | { |
c4093a6a JM |
5751 | struct ep_type_description |
5752 | { | |
5753 | enum bptype type; | |
5754 | char *description; | |
5755 | }; | |
5756 | static struct ep_type_description bptypes[] = | |
c906108c | 5757 | { |
c5aa993b JM |
5758 | {bp_none, "?deleted?"}, |
5759 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 5760 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
5761 | {bp_until, "until"}, |
5762 | {bp_finish, "finish"}, | |
5763 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 5764 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
5765 | {bp_read_watchpoint, "read watchpoint"}, |
5766 | {bp_access_watchpoint, "acc watchpoint"}, | |
5767 | {bp_longjmp, "longjmp"}, | |
5768 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 5769 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
5770 | {bp_exception, "exception"}, |
5771 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 5772 | {bp_step_resume, "step resume"}, |
2c03e5be | 5773 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
5774 | {bp_watchpoint_scope, "watchpoint scope"}, |
5775 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 5776 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 5777 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 5778 | {bp_thread_event, "thread events"}, |
1900040c | 5779 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 5780 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 5781 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 5782 | {bp_exception_master, "exception master"}, |
ce78b96d | 5783 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 5784 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 5785 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 5786 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 5787 | {bp_dprintf, "dprintf"}, |
4efc6507 | 5788 | {bp_jit_event, "jit events"}, |
0e30163f JK |
5789 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
5790 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 5791 | }; |
269b11a2 PA |
5792 | |
5793 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
5794 | || ((int) type != bptypes[(int) type].type)) | |
5795 | internal_error (__FILE__, __LINE__, | |
5796 | _("bptypes table does not describe type #%d."), | |
5797 | (int) type); | |
5798 | ||
5799 | return bptypes[(int) type].description; | |
5800 | } | |
5801 | ||
998580f1 MK |
5802 | DEF_VEC_I(int); |
5803 | ||
5804 | /* For MI, output a field named 'thread-groups' with a list as the value. | |
5805 | For CLI, prefix the list with the string 'inf'. */ | |
5806 | ||
5807 | static void | |
5808 | output_thread_groups (struct ui_out *uiout, | |
5809 | const char *field_name, | |
5810 | VEC(int) *inf_num, | |
5811 | int mi_only) | |
5812 | { | |
5813 | struct cleanup *back_to = make_cleanup_ui_out_list_begin_end (uiout, | |
5814 | field_name); | |
5815 | int is_mi = ui_out_is_mi_like_p (uiout); | |
5816 | int inf; | |
5817 | int i; | |
5818 | ||
5819 | /* For backward compatibility, don't display inferiors in CLI unless | |
5820 | there are several. Always display them for MI. */ | |
5821 | if (!is_mi && mi_only) | |
5822 | return; | |
5823 | ||
5824 | for (i = 0; VEC_iterate (int, inf_num, i, inf); ++i) | |
5825 | { | |
5826 | if (is_mi) | |
5827 | { | |
5828 | char mi_group[10]; | |
5829 | ||
5830 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf); | |
5831 | ui_out_field_string (uiout, NULL, mi_group); | |
5832 | } | |
5833 | else | |
5834 | { | |
5835 | if (i == 0) | |
5836 | ui_out_text (uiout, " inf "); | |
5837 | else | |
5838 | ui_out_text (uiout, ", "); | |
5839 | ||
5840 | ui_out_text (uiout, plongest (inf)); | |
5841 | } | |
5842 | } | |
5843 | ||
5844 | do_cleanups (back_to); | |
5845 | } | |
5846 | ||
269b11a2 PA |
5847 | /* Print B to gdb_stdout. */ |
5848 | ||
5849 | static void | |
5850 | print_one_breakpoint_location (struct breakpoint *b, | |
5851 | struct bp_location *loc, | |
5852 | int loc_number, | |
5853 | struct bp_location **last_loc, | |
269b11a2 PA |
5854 | int allflag) |
5855 | { | |
5856 | struct command_line *l; | |
c2c6d25f | 5857 | static char bpenables[] = "nynny"; |
c906108c | 5858 | |
79a45e25 | 5859 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
5860 | int header_of_multiple = 0; |
5861 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
5862 | struct value_print_options opts; |
5863 | ||
5864 | get_user_print_options (&opts); | |
0d381245 VP |
5865 | |
5866 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
5867 | /* See comment in print_one_breakpoint concerning treatment of |
5868 | breakpoints with single disabled location. */ | |
0d381245 VP |
5869 | if (loc == NULL |
5870 | && (b->loc != NULL | |
5871 | && (b->loc->next != NULL || !b->loc->enabled))) | |
5872 | header_of_multiple = 1; | |
5873 | if (loc == NULL) | |
5874 | loc = b->loc; | |
5875 | ||
c4093a6a JM |
5876 | annotate_record (); |
5877 | ||
5878 | /* 1 */ | |
5879 | annotate_field (0); | |
0d381245 VP |
5880 | if (part_of_multiple) |
5881 | { | |
5882 | char *formatted; | |
0c6773c1 | 5883 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
5884 | ui_out_field_string (uiout, "number", formatted); |
5885 | xfree (formatted); | |
5886 | } | |
5887 | else | |
5888 | { | |
5889 | ui_out_field_int (uiout, "number", b->number); | |
5890 | } | |
c4093a6a JM |
5891 | |
5892 | /* 2 */ | |
5893 | annotate_field (1); | |
0d381245 VP |
5894 | if (part_of_multiple) |
5895 | ui_out_field_skip (uiout, "type"); | |
269b11a2 PA |
5896 | else |
5897 | ui_out_field_string (uiout, "type", bptype_string (b->type)); | |
c4093a6a JM |
5898 | |
5899 | /* 3 */ | |
5900 | annotate_field (2); | |
0d381245 VP |
5901 | if (part_of_multiple) |
5902 | ui_out_field_skip (uiout, "disp"); | |
5903 | else | |
2cec12e5 | 5904 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 5905 | |
c4093a6a JM |
5906 | |
5907 | /* 4 */ | |
5908 | annotate_field (3); | |
0d381245 | 5909 | if (part_of_multiple) |
54e52265 | 5910 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 5911 | else |
4a64f543 MS |
5912 | ui_out_field_fmt (uiout, "enabled", "%c", |
5913 | bpenables[(int) b->enable_state]); | |
54e52265 | 5914 | ui_out_spaces (uiout, 2); |
0d381245 | 5915 | |
c4093a6a JM |
5916 | |
5917 | /* 5 and 6 */ | |
3086aeae | 5918 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 5919 | { |
4a64f543 MS |
5920 | /* Although the print_one can possibly print all locations, |
5921 | calling it here is not likely to get any nice result. So, | |
5922 | make sure there's just one location. */ | |
0d381245 | 5923 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 5924 | b->ops->print_one (b, last_loc); |
0d381245 | 5925 | } |
3086aeae DJ |
5926 | else |
5927 | switch (b->type) | |
5928 | { | |
5929 | case bp_none: | |
5930 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 5931 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 5932 | break; |
c906108c | 5933 | |
3086aeae DJ |
5934 | case bp_watchpoint: |
5935 | case bp_hardware_watchpoint: | |
5936 | case bp_read_watchpoint: | |
5937 | case bp_access_watchpoint: | |
3a5c3e22 PA |
5938 | { |
5939 | struct watchpoint *w = (struct watchpoint *) b; | |
5940 | ||
5941 | /* Field 4, the address, is omitted (which makes the columns | |
5942 | not line up too nicely with the headers, but the effect | |
5943 | is relatively readable). */ | |
5944 | if (opts.addressprint) | |
5945 | ui_out_field_skip (uiout, "addr"); | |
5946 | annotate_field (5); | |
5947 | ui_out_field_string (uiout, "what", w->exp_string); | |
5948 | } | |
3086aeae DJ |
5949 | break; |
5950 | ||
3086aeae DJ |
5951 | case bp_breakpoint: |
5952 | case bp_hardware_breakpoint: | |
5953 | case bp_until: | |
5954 | case bp_finish: | |
5955 | case bp_longjmp: | |
5956 | case bp_longjmp_resume: | |
e2e4d78b | 5957 | case bp_longjmp_call_dummy: |
186c406b TT |
5958 | case bp_exception: |
5959 | case bp_exception_resume: | |
3086aeae | 5960 | case bp_step_resume: |
2c03e5be | 5961 | case bp_hp_step_resume: |
3086aeae DJ |
5962 | case bp_watchpoint_scope: |
5963 | case bp_call_dummy: | |
aa7d318d | 5964 | case bp_std_terminate: |
3086aeae DJ |
5965 | case bp_shlib_event: |
5966 | case bp_thread_event: | |
5967 | case bp_overlay_event: | |
0fd8e87f | 5968 | case bp_longjmp_master: |
aa7d318d | 5969 | case bp_std_terminate_master: |
186c406b | 5970 | case bp_exception_master: |
1042e4c0 | 5971 | case bp_tracepoint: |
7a697b8d | 5972 | case bp_fast_tracepoint: |
0fb4aa4b | 5973 | case bp_static_tracepoint: |
e7e0cddf | 5974 | case bp_dprintf: |
4efc6507 | 5975 | case bp_jit_event: |
0e30163f JK |
5976 | case bp_gnu_ifunc_resolver: |
5977 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 5978 | if (opts.addressprint) |
3086aeae DJ |
5979 | { |
5980 | annotate_field (4); | |
54e52265 | 5981 | if (header_of_multiple) |
0d381245 | 5982 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 5983 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 5984 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 5985 | else |
5af949e3 UW |
5986 | ui_out_field_core_addr (uiout, "addr", |
5987 | loc->gdbarch, loc->address); | |
3086aeae DJ |
5988 | } |
5989 | annotate_field (5); | |
0d381245 | 5990 | if (!header_of_multiple) |
170b53b2 | 5991 | print_breakpoint_location (b, loc); |
0d381245 | 5992 | if (b->loc) |
a6d9a66e | 5993 | *last_loc = b->loc; |
3086aeae DJ |
5994 | break; |
5995 | } | |
c906108c | 5996 | |
6c95b8df | 5997 | |
998580f1 | 5998 | if (loc != NULL && !header_of_multiple) |
6c95b8df PA |
5999 | { |
6000 | struct inferior *inf; | |
998580f1 MK |
6001 | VEC(int) *inf_num = NULL; |
6002 | int mi_only = 1; | |
6c95b8df | 6003 | |
998580f1 | 6004 | ALL_INFERIORS (inf) |
6c95b8df PA |
6005 | { |
6006 | if (inf->pspace == loc->pspace) | |
998580f1 | 6007 | VEC_safe_push (int, inf_num, inf->num); |
6c95b8df | 6008 | } |
998580f1 MK |
6009 | |
6010 | /* For backward compatibility, don't display inferiors in CLI unless | |
6011 | there are several. Always display for MI. */ | |
6012 | if (allflag | |
6013 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6014 | && (number_of_program_spaces () > 1 | |
6015 | || number_of_inferiors () > 1) | |
6016 | /* LOC is for existing B, it cannot be in | |
6017 | moribund_locations and thus having NULL OWNER. */ | |
6018 | && loc->owner->type != bp_catchpoint)) | |
6019 | mi_only = 0; | |
6020 | output_thread_groups (uiout, "thread-groups", inf_num, mi_only); | |
6021 | VEC_free (int, inf_num); | |
6c95b8df PA |
6022 | } |
6023 | ||
4a306c9a | 6024 | if (!part_of_multiple) |
c4093a6a | 6025 | { |
4a306c9a JB |
6026 | if (b->thread != -1) |
6027 | { | |
6028 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6029 | "stop only in" line a little further down. */ |
4a306c9a JB |
6030 | ui_out_text (uiout, " thread "); |
6031 | ui_out_field_int (uiout, "thread", b->thread); | |
6032 | } | |
6033 | else if (b->task != 0) | |
6034 | { | |
6035 | ui_out_text (uiout, " task "); | |
6036 | ui_out_field_int (uiout, "task", b->task); | |
6037 | } | |
c4093a6a | 6038 | } |
f1310107 | 6039 | |
8b93c638 | 6040 | ui_out_text (uiout, "\n"); |
f1310107 | 6041 | |
348d480f | 6042 | if (!part_of_multiple) |
f1310107 TJB |
6043 | b->ops->print_one_detail (b, uiout); |
6044 | ||
0d381245 | 6045 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6046 | { |
6047 | annotate_field (6); | |
8b93c638 | 6048 | ui_out_text (uiout, "\tstop only in stack frame at "); |
e5dd4106 | 6049 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 6050 | the frame ID. */ |
5af949e3 UW |
6051 | ui_out_field_core_addr (uiout, "frame", |
6052 | b->gdbarch, b->frame_id.stack_addr); | |
8b93c638 | 6053 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
6054 | } |
6055 | ||
28010a5d | 6056 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6057 | { |
6058 | annotate_field (7); | |
d77f58be | 6059 | if (is_tracepoint (b)) |
1042e4c0 SS |
6060 | ui_out_text (uiout, "\ttrace only if "); |
6061 | else | |
6062 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 | 6063 | ui_out_field_string (uiout, "cond", b->cond_string); |
b775012e LM |
6064 | |
6065 | /* Print whether the target is doing the breakpoint's condition | |
6066 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6067 | if (is_breakpoint (b) | |
6068 | && breakpoint_condition_evaluation_mode () | |
6069 | == condition_evaluation_target) | |
6070 | { | |
6071 | ui_out_text (uiout, " ("); | |
6072 | ui_out_field_string (uiout, "evaluated-by", | |
6073 | bp_condition_evaluator (b)); | |
6074 | ui_out_text (uiout, " evals)"); | |
6075 | } | |
0101ce28 JJ |
6076 | ui_out_text (uiout, "\n"); |
6077 | } | |
6078 | ||
0d381245 | 6079 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6080 | { |
4a64f543 | 6081 | /* FIXME should make an annotation for this. */ |
8b93c638 JM |
6082 | ui_out_text (uiout, "\tstop only in thread "); |
6083 | ui_out_field_int (uiout, "thread", b->thread); | |
6084 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
6085 | } |
6086 | ||
556ec64d YQ |
6087 | if (!part_of_multiple) |
6088 | { | |
6089 | if (b->hit_count) | |
31f56a27 YQ |
6090 | { |
6091 | /* FIXME should make an annotation for this. */ | |
6092 | if (is_catchpoint (b)) | |
6093 | ui_out_text (uiout, "\tcatchpoint"); | |
6094 | else if (is_tracepoint (b)) | |
6095 | ui_out_text (uiout, "\ttracepoint"); | |
6096 | else | |
6097 | ui_out_text (uiout, "\tbreakpoint"); | |
6098 | ui_out_text (uiout, " already hit "); | |
6099 | ui_out_field_int (uiout, "times", b->hit_count); | |
6100 | if (b->hit_count == 1) | |
6101 | ui_out_text (uiout, " time\n"); | |
6102 | else | |
6103 | ui_out_text (uiout, " times\n"); | |
6104 | } | |
556ec64d YQ |
6105 | else |
6106 | { | |
31f56a27 YQ |
6107 | /* Output the count also if it is zero, but only if this is mi. */ |
6108 | if (ui_out_is_mi_like_p (uiout)) | |
6109 | ui_out_field_int (uiout, "times", b->hit_count); | |
556ec64d YQ |
6110 | } |
6111 | } | |
8b93c638 | 6112 | |
0d381245 | 6113 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6114 | { |
6115 | annotate_field (8); | |
8b93c638 JM |
6116 | ui_out_text (uiout, "\tignore next "); |
6117 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
6118 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 6119 | } |
059fb39f | 6120 | |
816338b5 SS |
6121 | /* Note that an enable count of 1 corresponds to "enable once" |
6122 | behavior, which is reported by the combination of enablement and | |
6123 | disposition, so we don't need to mention it here. */ | |
6124 | if (!part_of_multiple && b->enable_count > 1) | |
6125 | { | |
6126 | annotate_field (8); | |
6127 | ui_out_text (uiout, "\tdisable after "); | |
6128 | /* Tweak the wording to clarify that ignore and enable counts | |
6129 | are distinct, and have additive effect. */ | |
6130 | if (b->ignore_count) | |
6131 | ui_out_text (uiout, "additional "); | |
6132 | else | |
6133 | ui_out_text (uiout, "next "); | |
6134 | ui_out_field_int (uiout, "enable", b->enable_count); | |
6135 | ui_out_text (uiout, " hits\n"); | |
6136 | } | |
6137 | ||
f196051f SS |
6138 | if (!part_of_multiple && is_tracepoint (b)) |
6139 | { | |
6140 | struct tracepoint *tp = (struct tracepoint *) b; | |
6141 | ||
6142 | if (tp->traceframe_usage) | |
6143 | { | |
6144 | ui_out_text (uiout, "\ttrace buffer usage "); | |
6145 | ui_out_field_int (uiout, "traceframe-usage", tp->traceframe_usage); | |
6146 | ui_out_text (uiout, " bytes\n"); | |
6147 | } | |
6148 | } | |
d3ce09f5 | 6149 | |
9add0f1b | 6150 | l = b->commands ? b->commands->commands : NULL; |
059fb39f | 6151 | if (!part_of_multiple && l) |
c4093a6a | 6152 | { |
3b31d625 EZ |
6153 | struct cleanup *script_chain; |
6154 | ||
c4093a6a | 6155 | annotate_field (9); |
3b31d625 | 6156 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 6157 | print_command_lines (uiout, l, 4); |
3b31d625 | 6158 | do_cleanups (script_chain); |
c4093a6a | 6159 | } |
d24317b4 | 6160 | |
d9b3f62e | 6161 | if (is_tracepoint (b)) |
1042e4c0 | 6162 | { |
d9b3f62e PA |
6163 | struct tracepoint *t = (struct tracepoint *) b; |
6164 | ||
6165 | if (!part_of_multiple && t->pass_count) | |
6166 | { | |
6167 | annotate_field (10); | |
6168 | ui_out_text (uiout, "\tpass count "); | |
6169 | ui_out_field_int (uiout, "pass", t->pass_count); | |
6170 | ui_out_text (uiout, " \n"); | |
6171 | } | |
f2a8bc8a YQ |
6172 | |
6173 | /* Don't display it when tracepoint or tracepoint location is | |
6174 | pending. */ | |
6175 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6176 | { | |
6177 | annotate_field (11); | |
6178 | ||
6179 | if (ui_out_is_mi_like_p (uiout)) | |
6180 | ui_out_field_string (uiout, "installed", | |
6181 | loc->inserted ? "y" : "n"); | |
6182 | else | |
6183 | { | |
6184 | if (loc->inserted) | |
6185 | ui_out_text (uiout, "\t"); | |
6186 | else | |
6187 | ui_out_text (uiout, "\tnot "); | |
6188 | ui_out_text (uiout, "installed on target\n"); | |
6189 | } | |
6190 | } | |
1042e4c0 SS |
6191 | } |
6192 | ||
d24317b4 VP |
6193 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
6194 | { | |
3a5c3e22 PA |
6195 | if (is_watchpoint (b)) |
6196 | { | |
6197 | struct watchpoint *w = (struct watchpoint *) b; | |
6198 | ||
6199 | ui_out_field_string (uiout, "original-location", w->exp_string); | |
6200 | } | |
6201 | else if (b->addr_string) | |
d24317b4 | 6202 | ui_out_field_string (uiout, "original-location", b->addr_string); |
d24317b4 | 6203 | } |
c4093a6a | 6204 | } |
c5aa993b | 6205 | |
0d381245 VP |
6206 | static void |
6207 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6208 | struct bp_location **last_loc, |
6c95b8df | 6209 | int allflag) |
0d381245 | 6210 | { |
8d3788bd | 6211 | struct cleanup *bkpt_chain; |
79a45e25 | 6212 | struct ui_out *uiout = current_uiout; |
8d3788bd VP |
6213 | |
6214 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); | |
6215 | ||
12c5a436 | 6216 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
8d3788bd | 6217 | do_cleanups (bkpt_chain); |
0d381245 VP |
6218 | |
6219 | /* If this breakpoint has custom print function, | |
6220 | it's already printed. Otherwise, print individual | |
6221 | locations, if any. */ | |
6222 | if (b->ops == NULL || b->ops->print_one == NULL) | |
6223 | { | |
4a64f543 MS |
6224 | /* If breakpoint has a single location that is disabled, we |
6225 | print it as if it had several locations, since otherwise it's | |
6226 | hard to represent "breakpoint enabled, location disabled" | |
6227 | situation. | |
6228 | ||
6229 | Note that while hardware watchpoints have several locations | |
a3be7890 | 6230 | internally, that's not a property exposed to user. */ |
0d381245 | 6231 | if (b->loc |
a5606eee | 6232 | && !is_hardware_watchpoint (b) |
8d3788bd | 6233 | && (b->loc->next || !b->loc->enabled)) |
0d381245 VP |
6234 | { |
6235 | struct bp_location *loc; | |
6236 | int n = 1; | |
8d3788bd | 6237 | |
0d381245 | 6238 | for (loc = b->loc; loc; loc = loc->next, ++n) |
8d3788bd VP |
6239 | { |
6240 | struct cleanup *inner2 = | |
6241 | make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
6242 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); | |
6243 | do_cleanups (inner2); | |
6244 | } | |
0d381245 VP |
6245 | } |
6246 | } | |
6247 | } | |
6248 | ||
a6d9a66e UW |
6249 | static int |
6250 | breakpoint_address_bits (struct breakpoint *b) | |
6251 | { | |
6252 | int print_address_bits = 0; | |
6253 | struct bp_location *loc; | |
6254 | ||
6255 | for (loc = b->loc; loc; loc = loc->next) | |
6256 | { | |
c7437ca6 PA |
6257 | int addr_bit; |
6258 | ||
6259 | /* Software watchpoints that aren't watching memory don't have | |
6260 | an address to print. */ | |
6261 | if (b->type == bp_watchpoint && loc->watchpoint_type == -1) | |
6262 | continue; | |
6263 | ||
6264 | addr_bit = gdbarch_addr_bit (loc->gdbarch); | |
a6d9a66e UW |
6265 | if (addr_bit > print_address_bits) |
6266 | print_address_bits = addr_bit; | |
6267 | } | |
6268 | ||
6269 | return print_address_bits; | |
6270 | } | |
0d381245 | 6271 | |
c4093a6a JM |
6272 | struct captured_breakpoint_query_args |
6273 | { | |
6274 | int bnum; | |
6275 | }; | |
c5aa993b | 6276 | |
c4093a6a | 6277 | static int |
2b65245e | 6278 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
6279 | { |
6280 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 6281 | struct breakpoint *b; |
a6d9a66e | 6282 | struct bp_location *dummy_loc = NULL; |
cc59ec59 | 6283 | |
c4093a6a JM |
6284 | ALL_BREAKPOINTS (b) |
6285 | { | |
6286 | if (args->bnum == b->number) | |
c5aa993b | 6287 | { |
12c5a436 | 6288 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6289 | return GDB_RC_OK; |
c5aa993b | 6290 | } |
c4093a6a JM |
6291 | } |
6292 | return GDB_RC_NONE; | |
6293 | } | |
c5aa993b | 6294 | |
c4093a6a | 6295 | enum gdb_rc |
4a64f543 MS |
6296 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, |
6297 | char **error_message) | |
c4093a6a JM |
6298 | { |
6299 | struct captured_breakpoint_query_args args; | |
cc59ec59 | 6300 | |
c4093a6a JM |
6301 | args.bnum = bnum; |
6302 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
4a64f543 | 6303 | an error. */ |
b0b13bb4 DJ |
6304 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
6305 | error_message, RETURN_MASK_ALL) < 0) | |
6306 | return GDB_RC_FAIL; | |
6307 | else | |
6308 | return GDB_RC_OK; | |
c4093a6a | 6309 | } |
c5aa993b | 6310 | |
09d682a4 TT |
6311 | /* Return true if this breakpoint was set by the user, false if it is |
6312 | internal or momentary. */ | |
6313 | ||
6314 | int | |
6315 | user_breakpoint_p (struct breakpoint *b) | |
6316 | { | |
46c6471b | 6317 | return b->number > 0; |
09d682a4 TT |
6318 | } |
6319 | ||
7f3b0473 | 6320 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
6321 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
6322 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
6323 | FILTER is non-NULL, call it on each breakpoint and only include the | |
6324 | ones for which it returns non-zero. Return the total number of | |
6325 | breakpoints listed. */ | |
c906108c | 6326 | |
d77f58be | 6327 | static int |
e5a67952 | 6328 | breakpoint_1 (char *args, int allflag, |
4a64f543 | 6329 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 6330 | { |
52f0bd74 | 6331 | struct breakpoint *b; |
a6d9a66e | 6332 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6333 | int nr_printable_breakpoints; |
3b31d625 | 6334 | struct cleanup *bkpttbl_chain; |
79a45b7d | 6335 | struct value_print_options opts; |
a6d9a66e | 6336 | int print_address_bits = 0; |
269b11a2 | 6337 | int print_type_col_width = 14; |
79a45e25 | 6338 | struct ui_out *uiout = current_uiout; |
269b11a2 | 6339 | |
79a45b7d TT |
6340 | get_user_print_options (&opts); |
6341 | ||
4a64f543 MS |
6342 | /* Compute the number of rows in the table, as well as the size |
6343 | required for address fields. */ | |
7f3b0473 AC |
6344 | nr_printable_breakpoints = 0; |
6345 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6346 | { |
6347 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6348 | if (filter && !filter (b)) | |
6349 | continue; | |
6350 | ||
6351 | /* If we have an "args" string, it is a list of breakpoints to | |
6352 | accept. Skip the others. */ | |
6353 | if (args != NULL && *args != '\0') | |
6354 | { | |
6355 | if (allflag && parse_and_eval_long (args) != b->number) | |
6356 | continue; | |
6357 | if (!allflag && !number_is_in_list (args, b->number)) | |
6358 | continue; | |
6359 | } | |
269b11a2 | 6360 | |
e5a67952 MS |
6361 | if (allflag || user_breakpoint_p (b)) |
6362 | { | |
6363 | int addr_bit, type_len; | |
a6d9a66e | 6364 | |
e5a67952 MS |
6365 | addr_bit = breakpoint_address_bits (b); |
6366 | if (addr_bit > print_address_bits) | |
6367 | print_address_bits = addr_bit; | |
269b11a2 | 6368 | |
e5a67952 MS |
6369 | type_len = strlen (bptype_string (b->type)); |
6370 | if (type_len > print_type_col_width) | |
6371 | print_type_col_width = type_len; | |
6372 | ||
6373 | nr_printable_breakpoints++; | |
6374 | } | |
6375 | } | |
7f3b0473 | 6376 | |
79a45b7d | 6377 | if (opts.addressprint) |
3b31d625 | 6378 | bkpttbl_chain |
3e43a32a MS |
6379 | = make_cleanup_ui_out_table_begin_end (uiout, 6, |
6380 | nr_printable_breakpoints, | |
3b31d625 | 6381 | "BreakpointTable"); |
8b93c638 | 6382 | else |
3b31d625 | 6383 | bkpttbl_chain |
3e43a32a MS |
6384 | = make_cleanup_ui_out_table_begin_end (uiout, 5, |
6385 | nr_printable_breakpoints, | |
3b31d625 | 6386 | "BreakpointTable"); |
8b93c638 | 6387 | |
7f3b0473 | 6388 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
6389 | annotate_breakpoints_headers (); |
6390 | if (nr_printable_breakpoints > 0) | |
6391 | annotate_field (0); | |
4a64f543 | 6392 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
6393 | if (nr_printable_breakpoints > 0) |
6394 | annotate_field (1); | |
269b11a2 | 6395 | ui_out_table_header (uiout, print_type_col_width, ui_left, |
4a64f543 | 6396 | "type", "Type"); /* 2 */ |
d7faa9e7 AC |
6397 | if (nr_printable_breakpoints > 0) |
6398 | annotate_field (2); | |
4a64f543 | 6399 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ |
d7faa9e7 AC |
6400 | if (nr_printable_breakpoints > 0) |
6401 | annotate_field (3); | |
54e52265 | 6402 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 6403 | if (opts.addressprint) |
e5a67952 MS |
6404 | { |
6405 | if (nr_printable_breakpoints > 0) | |
6406 | annotate_field (4); | |
6407 | if (print_address_bits <= 32) | |
6408 | ui_out_table_header (uiout, 10, ui_left, | |
6409 | "addr", "Address"); /* 5 */ | |
6410 | else | |
6411 | ui_out_table_header (uiout, 18, ui_left, | |
6412 | "addr", "Address"); /* 5 */ | |
6413 | } | |
d7faa9e7 AC |
6414 | if (nr_printable_breakpoints > 0) |
6415 | annotate_field (5); | |
6416 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
6417 | ui_out_table_body (uiout); | |
6418 | if (nr_printable_breakpoints > 0) | |
6419 | annotate_breakpoints_table (); | |
7f3b0473 | 6420 | |
c4093a6a | 6421 | ALL_BREAKPOINTS (b) |
e5a67952 MS |
6422 | { |
6423 | QUIT; | |
6424 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6425 | if (filter && !filter (b)) | |
6426 | continue; | |
6427 | ||
6428 | /* If we have an "args" string, it is a list of breakpoints to | |
6429 | accept. Skip the others. */ | |
6430 | ||
6431 | if (args != NULL && *args != '\0') | |
6432 | { | |
6433 | if (allflag) /* maintenance info breakpoint */ | |
6434 | { | |
6435 | if (parse_and_eval_long (args) != b->number) | |
6436 | continue; | |
6437 | } | |
6438 | else /* all others */ | |
6439 | { | |
6440 | if (!number_is_in_list (args, b->number)) | |
6441 | continue; | |
6442 | } | |
6443 | } | |
6444 | /* We only print out user settable breakpoints unless the | |
6445 | allflag is set. */ | |
6446 | if (allflag || user_breakpoint_p (b)) | |
12c5a436 | 6447 | print_one_breakpoint (b, &last_loc, allflag); |
e5a67952 MS |
6448 | } |
6449 | ||
3b31d625 | 6450 | do_cleanups (bkpttbl_chain); |
698384cd | 6451 | |
7f3b0473 | 6452 | if (nr_printable_breakpoints == 0) |
c906108c | 6453 | { |
4a64f543 MS |
6454 | /* If there's a filter, let the caller decide how to report |
6455 | empty list. */ | |
d77f58be SS |
6456 | if (!filter) |
6457 | { | |
e5a67952 | 6458 | if (args == NULL || *args == '\0') |
d77f58be SS |
6459 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); |
6460 | else | |
4a64f543 | 6461 | ui_out_message (uiout, 0, |
e5a67952 MS |
6462 | "No breakpoint or watchpoint matching '%s'.\n", |
6463 | args); | |
d77f58be | 6464 | } |
c906108c SS |
6465 | } |
6466 | else | |
c4093a6a | 6467 | { |
a6d9a66e UW |
6468 | if (last_loc && !server_command) |
6469 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 6470 | } |
c906108c | 6471 | |
4a64f543 | 6472 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6473 | there have been breakpoints? */ |
c906108c | 6474 | annotate_breakpoints_table_end (); |
d77f58be SS |
6475 | |
6476 | return nr_printable_breakpoints; | |
c906108c SS |
6477 | } |
6478 | ||
ad443146 SS |
6479 | /* Display the value of default-collect in a way that is generally |
6480 | compatible with the breakpoint list. */ | |
6481 | ||
6482 | static void | |
6483 | default_collect_info (void) | |
6484 | { | |
79a45e25 PA |
6485 | struct ui_out *uiout = current_uiout; |
6486 | ||
ad443146 SS |
6487 | /* If it has no value (which is frequently the case), say nothing; a |
6488 | message like "No default-collect." gets in user's face when it's | |
6489 | not wanted. */ | |
6490 | if (!*default_collect) | |
6491 | return; | |
6492 | ||
6493 | /* The following phrase lines up nicely with per-tracepoint collect | |
6494 | actions. */ | |
6495 | ui_out_text (uiout, "default collect "); | |
6496 | ui_out_field_string (uiout, "default-collect", default_collect); | |
6497 | ui_out_text (uiout, " \n"); | |
6498 | } | |
6499 | ||
c906108c | 6500 | static void |
e5a67952 | 6501 | breakpoints_info (char *args, int from_tty) |
c906108c | 6502 | { |
e5a67952 | 6503 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
6504 | |
6505 | default_collect_info (); | |
d77f58be SS |
6506 | } |
6507 | ||
6508 | static void | |
e5a67952 | 6509 | watchpoints_info (char *args, int from_tty) |
d77f58be | 6510 | { |
e5a67952 | 6511 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
79a45e25 | 6512 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6513 | |
6514 | if (num_printed == 0) | |
6515 | { | |
e5a67952 | 6516 | if (args == NULL || *args == '\0') |
d77f58be SS |
6517 | ui_out_message (uiout, 0, "No watchpoints.\n"); |
6518 | else | |
e5a67952 | 6519 | ui_out_message (uiout, 0, "No watchpoint matching '%s'.\n", args); |
d77f58be | 6520 | } |
c906108c SS |
6521 | } |
6522 | ||
7a292a7a | 6523 | static void |
e5a67952 | 6524 | maintenance_info_breakpoints (char *args, int from_tty) |
c906108c | 6525 | { |
e5a67952 | 6526 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
6527 | |
6528 | default_collect_info (); | |
c906108c SS |
6529 | } |
6530 | ||
0d381245 | 6531 | static int |
714835d5 | 6532 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6533 | struct program_space *pspace, |
714835d5 | 6534 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6535 | { |
6536 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6537 | |
0d381245 VP |
6538 | for (; bl; bl = bl->next) |
6539 | { | |
6c95b8df PA |
6540 | if (bl->pspace == pspace |
6541 | && bl->address == pc | |
0d381245 VP |
6542 | && (!overlay_debugging || bl->section == section)) |
6543 | return 1; | |
6544 | } | |
6545 | return 0; | |
6546 | } | |
6547 | ||
672f9b60 | 6548 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6549 | concerns with logical breakpoints, so we match program spaces, not |
6550 | address spaces. */ | |
c906108c SS |
6551 | |
6552 | static void | |
6c95b8df PA |
6553 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6554 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6555 | struct obj_section *section, int thread) |
c906108c | 6556 | { |
52f0bd74 AC |
6557 | int others = 0; |
6558 | struct breakpoint *b; | |
c906108c SS |
6559 | |
6560 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
6561 | others += (user_breakpoint_p (b) |
6562 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
6563 | if (others > 0) |
6564 | { | |
a3f17187 AC |
6565 | if (others == 1) |
6566 | printf_filtered (_("Note: breakpoint ")); | |
6567 | else /* if (others == ???) */ | |
6568 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6569 | ALL_BREAKPOINTS (b) |
672f9b60 | 6570 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6571 | { |
6572 | others--; | |
6573 | printf_filtered ("%d", b->number); | |
6574 | if (b->thread == -1 && thread != -1) | |
6575 | printf_filtered (" (all threads)"); | |
6576 | else if (b->thread != -1) | |
6577 | printf_filtered (" (thread %d)", b->thread); | |
6578 | printf_filtered ("%s%s ", | |
059fb39f | 6579 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6580 | || b->enable_state == bp_call_disabled) |
0d381245 VP |
6581 | ? " (disabled)" |
6582 | : b->enable_state == bp_permanent | |
6583 | ? " (permanent)" | |
6584 | : ""), | |
6585 | (others > 1) ? "," | |
6586 | : ((others == 1) ? " and" : "")); | |
6587 | } | |
a3f17187 | 6588 | printf_filtered (_("also set at pc ")); |
5af949e3 | 6589 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
6590 | printf_filtered (".\n"); |
6591 | } | |
6592 | } | |
6593 | \f | |
c906108c | 6594 | |
e4f237da KB |
6595 | /* Return true iff it is meaningful to use the address member of |
6596 | BPT. For some breakpoint types, the address member is irrelevant | |
6597 | and it makes no sense to attempt to compare it to other addresses | |
6598 | (or use it for any other purpose either). | |
6599 | ||
4a64f543 MS |
6600 | More specifically, each of the following breakpoint types will |
6601 | always have a zero valued address and we don't want to mark | |
6602 | breakpoints of any of these types to be a duplicate of an actual | |
6603 | breakpoint at address zero: | |
e4f237da KB |
6604 | |
6605 | bp_watchpoint | |
2d134ed3 PA |
6606 | bp_catchpoint |
6607 | ||
6608 | */ | |
e4f237da KB |
6609 | |
6610 | static int | |
6611 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
6612 | { | |
6613 | enum bptype type = bpt->type; | |
6614 | ||
2d134ed3 PA |
6615 | return (type != bp_watchpoint && type != bp_catchpoint); |
6616 | } | |
6617 | ||
6618 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6619 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6620 | ||
6621 | static int | |
4a64f543 MS |
6622 | watchpoint_locations_match (struct bp_location *loc1, |
6623 | struct bp_location *loc2) | |
2d134ed3 | 6624 | { |
3a5c3e22 PA |
6625 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6626 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6627 | ||
6628 | /* Both of them must exist. */ | |
6629 | gdb_assert (w1 != NULL); | |
6630 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6631 | |
4a64f543 MS |
6632 | /* If the target can evaluate the condition expression in hardware, |
6633 | then we we need to insert both watchpoints even if they are at | |
6634 | the same place. Otherwise the watchpoint will only trigger when | |
6635 | the condition of whichever watchpoint was inserted evaluates to | |
6636 | true, not giving a chance for GDB to check the condition of the | |
6637 | other watchpoint. */ | |
3a5c3e22 | 6638 | if ((w1->cond_exp |
4a64f543 MS |
6639 | && target_can_accel_watchpoint_condition (loc1->address, |
6640 | loc1->length, | |
0cf6dd15 | 6641 | loc1->watchpoint_type, |
3a5c3e22 PA |
6642 | w1->cond_exp)) |
6643 | || (w2->cond_exp | |
4a64f543 MS |
6644 | && target_can_accel_watchpoint_condition (loc2->address, |
6645 | loc2->length, | |
0cf6dd15 | 6646 | loc2->watchpoint_type, |
3a5c3e22 | 6647 | w2->cond_exp))) |
0cf6dd15 TJB |
6648 | return 0; |
6649 | ||
85d721b8 PA |
6650 | /* Note that this checks the owner's type, not the location's. In |
6651 | case the target does not support read watchpoints, but does | |
6652 | support access watchpoints, we'll have bp_read_watchpoint | |
6653 | watchpoints with hw_access locations. Those should be considered | |
6654 | duplicates of hw_read locations. The hw_read locations will | |
6655 | become hw_access locations later. */ | |
2d134ed3 PA |
6656 | return (loc1->owner->type == loc2->owner->type |
6657 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6658 | && loc1->address == loc2->address | |
6659 | && loc1->length == loc2->length); | |
e4f237da KB |
6660 | } |
6661 | ||
6c95b8df PA |
6662 | /* Returns true if {ASPACE1,ADDR1} and {ASPACE2,ADDR2} represent the |
6663 | same breakpoint location. In most targets, this can only be true | |
6664 | if ASPACE1 matches ASPACE2. On targets that have global | |
6665 | breakpoints, the address space doesn't really matter. */ | |
6666 | ||
6667 | static int | |
6668 | breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1, | |
6669 | struct address_space *aspace2, CORE_ADDR addr2) | |
6670 | { | |
f5656ead | 6671 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6672 | || aspace1 == aspace2) |
6673 | && addr1 == addr2); | |
6674 | } | |
6675 | ||
f1310107 TJB |
6676 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6677 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6678 | matches ASPACE2. On targets that have global breakpoints, the address | |
6679 | space doesn't really matter. */ | |
6680 | ||
6681 | static int | |
6682 | breakpoint_address_match_range (struct address_space *aspace1, CORE_ADDR addr1, | |
6683 | int len1, struct address_space *aspace2, | |
6684 | CORE_ADDR addr2) | |
6685 | { | |
f5656ead | 6686 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
6687 | || aspace1 == aspace2) |
6688 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6689 | } | |
6690 | ||
6691 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6692 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6693 | matches the breakpoint's address space. On targets that have global | |
6694 | breakpoints, the address space doesn't really matter. */ | |
6695 | ||
6696 | static int | |
6697 | breakpoint_location_address_match (struct bp_location *bl, | |
6698 | struct address_space *aspace, | |
6699 | CORE_ADDR addr) | |
6700 | { | |
6701 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6702 | aspace, addr) | |
6703 | || (bl->length | |
6704 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6705 | bl->address, bl->length, | |
6706 | aspace, addr))); | |
6707 | } | |
6708 | ||
1e4d1764 YQ |
6709 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6710 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6711 | true, otherwise returns false. */ | |
6712 | ||
6713 | static int | |
6714 | tracepoint_locations_match (struct bp_location *loc1, | |
6715 | struct bp_location *loc2) | |
6716 | { | |
6717 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6718 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6719 | locations at the same address of different tracepoints are regarded as | |
6720 | different locations. */ | |
6721 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
6722 | else | |
6723 | return 0; | |
6724 | } | |
6725 | ||
2d134ed3 PA |
6726 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
6727 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
6728 | represent the same location. */ | |
6729 | ||
6730 | static int | |
4a64f543 MS |
6731 | breakpoint_locations_match (struct bp_location *loc1, |
6732 | struct bp_location *loc2) | |
2d134ed3 | 6733 | { |
2bdf28a0 JK |
6734 | int hw_point1, hw_point2; |
6735 | ||
6736 | /* Both of them must not be in moribund_locations. */ | |
6737 | gdb_assert (loc1->owner != NULL); | |
6738 | gdb_assert (loc2->owner != NULL); | |
6739 | ||
6740 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
6741 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
6742 | |
6743 | if (hw_point1 != hw_point2) | |
6744 | return 0; | |
6745 | else if (hw_point1) | |
6746 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
6747 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
6748 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 6749 | else |
f1310107 TJB |
6750 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
6751 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
6752 | loc2->pspace->aspace, loc2->address) | |
6753 | && loc1->length == loc2->length); | |
2d134ed3 PA |
6754 | } |
6755 | ||
76897487 KB |
6756 | static void |
6757 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
6758 | int bnum, int have_bnum) | |
6759 | { | |
f63fbe86 MS |
6760 | /* The longest string possibly returned by hex_string_custom |
6761 | is 50 chars. These must be at least that big for safety. */ | |
6762 | char astr1[64]; | |
6763 | char astr2[64]; | |
76897487 | 6764 | |
bb599908 PH |
6765 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
6766 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 6767 | if (have_bnum) |
8a3fe4f8 | 6768 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
6769 | bnum, astr1, astr2); |
6770 | else | |
8a3fe4f8 | 6771 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
6772 | } |
6773 | ||
4a64f543 MS |
6774 | /* Adjust a breakpoint's address to account for architectural |
6775 | constraints on breakpoint placement. Return the adjusted address. | |
6776 | Note: Very few targets require this kind of adjustment. For most | |
6777 | targets, this function is simply the identity function. */ | |
76897487 KB |
6778 | |
6779 | static CORE_ADDR | |
a6d9a66e UW |
6780 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
6781 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 6782 | { |
a6d9a66e | 6783 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
6784 | { |
6785 | /* Very few targets need any kind of breakpoint adjustment. */ | |
6786 | return bpaddr; | |
6787 | } | |
88f7da05 KB |
6788 | else if (bptype == bp_watchpoint |
6789 | || bptype == bp_hardware_watchpoint | |
6790 | || bptype == bp_read_watchpoint | |
6791 | || bptype == bp_access_watchpoint | |
fe798b75 | 6792 | || bptype == bp_catchpoint) |
88f7da05 KB |
6793 | { |
6794 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
6795 | have their addresses modified. */ | |
6796 | return bpaddr; | |
6797 | } | |
76897487 KB |
6798 | else |
6799 | { | |
6800 | CORE_ADDR adjusted_bpaddr; | |
6801 | ||
6802 | /* Some targets have architectural constraints on the placement | |
6803 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 6804 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
6805 | |
6806 | /* An adjusted breakpoint address can significantly alter | |
6807 | a user's expectations. Print a warning if an adjustment | |
6808 | is required. */ | |
6809 | if (adjusted_bpaddr != bpaddr) | |
6810 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
6811 | ||
6812 | return adjusted_bpaddr; | |
6813 | } | |
6814 | } | |
6815 | ||
28010a5d PA |
6816 | void |
6817 | init_bp_location (struct bp_location *loc, const struct bp_location_ops *ops, | |
6818 | struct breakpoint *owner) | |
7cc221ef | 6819 | { |
7cc221ef DJ |
6820 | memset (loc, 0, sizeof (*loc)); |
6821 | ||
348d480f PA |
6822 | gdb_assert (ops != NULL); |
6823 | ||
28010a5d PA |
6824 | loc->ops = ops; |
6825 | loc->owner = owner; | |
511a6cd4 | 6826 | loc->cond = NULL; |
b775012e | 6827 | loc->cond_bytecode = NULL; |
0d381245 VP |
6828 | loc->shlib_disabled = 0; |
6829 | loc->enabled = 1; | |
e049a4b5 | 6830 | |
28010a5d | 6831 | switch (owner->type) |
e049a4b5 DJ |
6832 | { |
6833 | case bp_breakpoint: | |
6834 | case bp_until: | |
6835 | case bp_finish: | |
6836 | case bp_longjmp: | |
6837 | case bp_longjmp_resume: | |
e2e4d78b | 6838 | case bp_longjmp_call_dummy: |
186c406b TT |
6839 | case bp_exception: |
6840 | case bp_exception_resume: | |
e049a4b5 | 6841 | case bp_step_resume: |
2c03e5be | 6842 | case bp_hp_step_resume: |
e049a4b5 DJ |
6843 | case bp_watchpoint_scope: |
6844 | case bp_call_dummy: | |
aa7d318d | 6845 | case bp_std_terminate: |
e049a4b5 DJ |
6846 | case bp_shlib_event: |
6847 | case bp_thread_event: | |
6848 | case bp_overlay_event: | |
4efc6507 | 6849 | case bp_jit_event: |
0fd8e87f | 6850 | case bp_longjmp_master: |
aa7d318d | 6851 | case bp_std_terminate_master: |
186c406b | 6852 | case bp_exception_master: |
0e30163f JK |
6853 | case bp_gnu_ifunc_resolver: |
6854 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 6855 | case bp_dprintf: |
e049a4b5 | 6856 | loc->loc_type = bp_loc_software_breakpoint; |
b775012e | 6857 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
6858 | break; |
6859 | case bp_hardware_breakpoint: | |
6860 | loc->loc_type = bp_loc_hardware_breakpoint; | |
b775012e | 6861 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
6862 | break; |
6863 | case bp_hardware_watchpoint: | |
6864 | case bp_read_watchpoint: | |
6865 | case bp_access_watchpoint: | |
6866 | loc->loc_type = bp_loc_hardware_watchpoint; | |
6867 | break; | |
6868 | case bp_watchpoint: | |
ce78b96d | 6869 | case bp_catchpoint: |
15c3d785 PA |
6870 | case bp_tracepoint: |
6871 | case bp_fast_tracepoint: | |
0fb4aa4b | 6872 | case bp_static_tracepoint: |
e049a4b5 DJ |
6873 | loc->loc_type = bp_loc_other; |
6874 | break; | |
6875 | default: | |
e2e0b3e5 | 6876 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
6877 | } |
6878 | ||
f431efe5 | 6879 | loc->refc = 1; |
28010a5d PA |
6880 | } |
6881 | ||
6882 | /* Allocate a struct bp_location. */ | |
6883 | ||
6884 | static struct bp_location * | |
6885 | allocate_bp_location (struct breakpoint *bpt) | |
6886 | { | |
348d480f PA |
6887 | return bpt->ops->allocate_location (bpt); |
6888 | } | |
7cc221ef | 6889 | |
f431efe5 PA |
6890 | static void |
6891 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 6892 | { |
348d480f | 6893 | loc->ops->dtor (loc); |
fe3f5fa8 VP |
6894 | xfree (loc); |
6895 | } | |
6896 | ||
f431efe5 PA |
6897 | /* Increment reference count. */ |
6898 | ||
6899 | static void | |
6900 | incref_bp_location (struct bp_location *bl) | |
6901 | { | |
6902 | ++bl->refc; | |
6903 | } | |
6904 | ||
6905 | /* Decrement reference count. If the reference count reaches 0, | |
6906 | destroy the bp_location. Sets *BLP to NULL. */ | |
6907 | ||
6908 | static void | |
6909 | decref_bp_location (struct bp_location **blp) | |
6910 | { | |
0807b50c PA |
6911 | gdb_assert ((*blp)->refc > 0); |
6912 | ||
f431efe5 PA |
6913 | if (--(*blp)->refc == 0) |
6914 | free_bp_location (*blp); | |
6915 | *blp = NULL; | |
6916 | } | |
6917 | ||
346774a9 | 6918 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 6919 | |
346774a9 PA |
6920 | static void |
6921 | add_to_breakpoint_chain (struct breakpoint *b) | |
c906108c | 6922 | { |
346774a9 | 6923 | struct breakpoint *b1; |
c906108c | 6924 | |
346774a9 PA |
6925 | /* Add this breakpoint to the end of the chain so that a list of |
6926 | breakpoints will come out in order of increasing numbers. */ | |
6927 | ||
6928 | b1 = breakpoint_chain; | |
6929 | if (b1 == 0) | |
6930 | breakpoint_chain = b; | |
6931 | else | |
6932 | { | |
6933 | while (b1->next) | |
6934 | b1 = b1->next; | |
6935 | b1->next = b; | |
6936 | } | |
6937 | } | |
6938 | ||
6939 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
6940 | ||
6941 | static void | |
6942 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
6943 | struct gdbarch *gdbarch, | |
28010a5d | 6944 | enum bptype bptype, |
c0a91b2b | 6945 | const struct breakpoint_ops *ops) |
346774a9 | 6946 | { |
c906108c | 6947 | memset (b, 0, sizeof (*b)); |
2219d63c | 6948 | |
348d480f PA |
6949 | gdb_assert (ops != NULL); |
6950 | ||
28010a5d | 6951 | b->ops = ops; |
4d28f7a8 | 6952 | b->type = bptype; |
a6d9a66e | 6953 | b->gdbarch = gdbarch; |
c906108c SS |
6954 | b->language = current_language->la_language; |
6955 | b->input_radix = input_radix; | |
6956 | b->thread = -1; | |
b5de0fa7 | 6957 | b->enable_state = bp_enabled; |
c906108c SS |
6958 | b->next = 0; |
6959 | b->silent = 0; | |
6960 | b->ignore_count = 0; | |
6961 | b->commands = NULL; | |
818dd999 | 6962 | b->frame_id = null_frame_id; |
0d381245 | 6963 | b->condition_not_parsed = 0; |
84f4c1fe | 6964 | b->py_bp_object = NULL; |
d0fb5eae | 6965 | b->related_breakpoint = b; |
346774a9 PA |
6966 | } |
6967 | ||
6968 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
6969 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
6970 | |
6971 | static struct breakpoint * | |
6972 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 6973 | enum bptype bptype, |
c0a91b2b | 6974 | const struct breakpoint_ops *ops) |
346774a9 PA |
6975 | { |
6976 | struct breakpoint *b = XNEW (struct breakpoint); | |
6977 | ||
348d480f | 6978 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
c56053d2 | 6979 | add_to_breakpoint_chain (b); |
0d381245 VP |
6980 | return b; |
6981 | } | |
6982 | ||
0e30163f JK |
6983 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
6984 | resolutions should be made as the user specified the location explicitly | |
6985 | enough. */ | |
6986 | ||
0d381245 | 6987 | static void |
0e30163f | 6988 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 6989 | { |
2bdf28a0 JK |
6990 | gdb_assert (loc->owner != NULL); |
6991 | ||
0d381245 | 6992 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 6993 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 6994 | || is_tracepoint (loc->owner)) |
0d381245 | 6995 | { |
0e30163f | 6996 | int is_gnu_ifunc; |
2c02bd72 | 6997 | const char *function_name; |
6a3a010b | 6998 | CORE_ADDR func_addr; |
0e30163f | 6999 | |
2c02bd72 | 7000 | find_pc_partial_function_gnu_ifunc (loc->address, &function_name, |
6a3a010b | 7001 | &func_addr, NULL, &is_gnu_ifunc); |
0e30163f JK |
7002 | |
7003 | if (is_gnu_ifunc && !explicit_loc) | |
7004 | { | |
7005 | struct breakpoint *b = loc->owner; | |
7006 | ||
7007 | gdb_assert (loc->pspace == current_program_space); | |
2c02bd72 | 7008 | if (gnu_ifunc_resolve_name (function_name, |
0e30163f JK |
7009 | &loc->requested_address)) |
7010 | { | |
7011 | /* Recalculate ADDRESS based on new REQUESTED_ADDRESS. */ | |
7012 | loc->address = adjust_breakpoint_address (loc->gdbarch, | |
7013 | loc->requested_address, | |
7014 | b->type); | |
7015 | } | |
7016 | else if (b->type == bp_breakpoint && b->loc == loc | |
7017 | && loc->next == NULL && b->related_breakpoint == b) | |
7018 | { | |
7019 | /* Create only the whole new breakpoint of this type but do not | |
7020 | mess more complicated breakpoints with multiple locations. */ | |
7021 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b MR |
7022 | /* Remember the resolver's address for use by the return |
7023 | breakpoint. */ | |
7024 | loc->related_address = func_addr; | |
0e30163f JK |
7025 | } |
7026 | } | |
7027 | ||
2c02bd72 DE |
7028 | if (function_name) |
7029 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
7030 | } |
7031 | } | |
7032 | ||
a6d9a66e | 7033 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7034 | struct gdbarch * |
a6d9a66e UW |
7035 | get_sal_arch (struct symtab_and_line sal) |
7036 | { | |
7037 | if (sal.section) | |
7038 | return get_objfile_arch (sal.section->objfile); | |
7039 | if (sal.symtab) | |
7040 | return get_objfile_arch (sal.symtab->objfile); | |
7041 | ||
7042 | return NULL; | |
7043 | } | |
7044 | ||
346774a9 PA |
7045 | /* Low level routine for partially initializing a breakpoint of type |
7046 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7047 | file name, and line number are provided by SAL. |
0d381245 VP |
7048 | |
7049 | It is expected that the caller will complete the initialization of | |
7050 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7051 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7052 | |
346774a9 PA |
7053 | static void |
7054 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7055 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7056 | const struct breakpoint_ops *ops) |
0d381245 | 7057 | { |
28010a5d | 7058 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7059 | |
3742cc8b | 7060 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7061 | |
6c95b8df PA |
7062 | if (bptype != bp_catchpoint) |
7063 | gdb_assert (sal.pspace != NULL); | |
7064 | ||
f8eba3c6 TT |
7065 | /* Store the program space that was used to set the breakpoint, |
7066 | except for ordinary breakpoints, which are independent of the | |
7067 | program space. */ | |
7068 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7069 | b->pspace = sal.pspace; | |
346774a9 | 7070 | } |
c906108c | 7071 | |
346774a9 PA |
7072 | /* set_raw_breakpoint is a low level routine for allocating and |
7073 | partially initializing a breakpoint of type BPTYPE. The newly | |
7074 | created breakpoint's address, section, source file name, and line | |
7075 | number are provided by SAL. The newly created and partially | |
7076 | initialized breakpoint is added to the breakpoint chain and | |
7077 | is also returned as the value of this function. | |
7078 | ||
7079 | It is expected that the caller will complete the initialization of | |
7080 | the newly created breakpoint struct as well as output any status | |
7081 | information regarding the creation of a new breakpoint. In | |
7082 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7083 | number! Care should be taken to not allow an error to occur | |
7084 | prior to completing the initialization of the breakpoint. If this | |
7085 | should happen, a bogus breakpoint will be left on the chain. */ | |
7086 | ||
7087 | struct breakpoint * | |
7088 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7089 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7090 | const struct breakpoint_ops *ops) |
346774a9 PA |
7091 | { |
7092 | struct breakpoint *b = XNEW (struct breakpoint); | |
7093 | ||
348d480f | 7094 | init_raw_breakpoint (b, gdbarch, sal, bptype, ops); |
c56053d2 | 7095 | add_to_breakpoint_chain (b); |
c906108c SS |
7096 | return b; |
7097 | } | |
7098 | ||
c2c6d25f JM |
7099 | |
7100 | /* Note that the breakpoint object B describes a permanent breakpoint | |
7101 | instruction, hard-wired into the inferior's code. */ | |
7102 | void | |
7103 | make_breakpoint_permanent (struct breakpoint *b) | |
7104 | { | |
0d381245 | 7105 | struct bp_location *bl; |
cc59ec59 | 7106 | |
b5de0fa7 | 7107 | b->enable_state = bp_permanent; |
c2c6d25f | 7108 | |
4a64f543 MS |
7109 | /* By definition, permanent breakpoints are already present in the |
7110 | code. Mark all locations as inserted. For now, | |
7111 | make_breakpoint_permanent is called in just one place, so it's | |
7112 | hard to say if it's reasonable to have permanent breakpoint with | |
e5dd4106 | 7113 | multiple locations or not, but it's easy to implement. */ |
0d381245 VP |
7114 | for (bl = b->loc; bl; bl = bl->next) |
7115 | bl->inserted = 1; | |
c2c6d25f JM |
7116 | } |
7117 | ||
53a5351d | 7118 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7119 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7120 | initiated the operation. */ | |
c906108c SS |
7121 | |
7122 | void | |
186c406b | 7123 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7124 | { |
35df4500 | 7125 | struct breakpoint *b, *b_tmp; |
186c406b | 7126 | int thread = tp->num; |
0fd8e87f UW |
7127 | |
7128 | /* To avoid having to rescan all objfile symbols at every step, | |
7129 | we maintain a list of continually-inserted but always disabled | |
7130 | longjmp "master" breakpoints. Here, we simply create momentary | |
7131 | clones of those and enable them for the requested thread. */ | |
35df4500 | 7132 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 7133 | if (b->pspace == current_program_space |
186c406b TT |
7134 | && (b->type == bp_longjmp_master |
7135 | || b->type == bp_exception_master)) | |
0fd8e87f | 7136 | { |
06edf0c0 PA |
7137 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7138 | struct breakpoint *clone; | |
cc59ec59 | 7139 | |
e2e4d78b JK |
7140 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7141 | after their removal. */ | |
06edf0c0 | 7142 | clone = momentary_breakpoint_from_master (b, type, |
e2e4d78b | 7143 | &longjmp_breakpoint_ops); |
0fd8e87f UW |
7144 | clone->thread = thread; |
7145 | } | |
186c406b TT |
7146 | |
7147 | tp->initiating_frame = frame; | |
c906108c SS |
7148 | } |
7149 | ||
611c83ae | 7150 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7151 | void |
611c83ae | 7152 | delete_longjmp_breakpoint (int thread) |
c906108c | 7153 | { |
35df4500 | 7154 | struct breakpoint *b, *b_tmp; |
c906108c | 7155 | |
35df4500 | 7156 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 7157 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7158 | { |
7159 | if (b->thread == thread) | |
7160 | delete_breakpoint (b); | |
7161 | } | |
c906108c SS |
7162 | } |
7163 | ||
f59f708a PA |
7164 | void |
7165 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7166 | { | |
7167 | struct breakpoint *b, *b_tmp; | |
7168 | ||
7169 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7170 | if (b->type == bp_longjmp || b->type == bp_exception) | |
7171 | { | |
7172 | if (b->thread == thread) | |
7173 | b->disposition = disp_del_at_next_stop; | |
7174 | } | |
7175 | } | |
7176 | ||
e2e4d78b JK |
7177 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7178 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7179 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7180 | breakpoints. */ | |
7181 | ||
7182 | struct breakpoint * | |
7183 | set_longjmp_breakpoint_for_call_dummy (void) | |
7184 | { | |
7185 | struct breakpoint *b, *retval = NULL; | |
7186 | ||
7187 | ALL_BREAKPOINTS (b) | |
7188 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
7189 | { | |
7190 | struct breakpoint *new_b; | |
7191 | ||
7192 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
7193 | &momentary_breakpoint_ops); | |
7194 | new_b->thread = pid_to_thread_id (inferior_ptid); | |
7195 | ||
7196 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7197 | ||
7198 | gdb_assert (new_b->related_breakpoint == new_b); | |
7199 | if (retval == NULL) | |
7200 | retval = new_b; | |
7201 | new_b->related_breakpoint = retval; | |
7202 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7203 | retval = retval->related_breakpoint; | |
7204 | retval->related_breakpoint = new_b; | |
7205 | } | |
7206 | ||
7207 | return retval; | |
7208 | } | |
7209 | ||
7210 | /* Verify all existing dummy frames and their associated breakpoints for | |
7211 | THREAD. Remove those which can no longer be found in the current frame | |
7212 | stack. | |
7213 | ||
7214 | You should call this function only at places where it is safe to currently | |
7215 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7216 | frames. */ | |
7217 | ||
7218 | void | |
7219 | check_longjmp_breakpoint_for_call_dummy (int thread) | |
7220 | { | |
7221 | struct breakpoint *b, *b_tmp; | |
7222 | ||
7223 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7224 | if (b->type == bp_longjmp_call_dummy && b->thread == thread) | |
7225 | { | |
7226 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7227 | ||
7228 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7229 | dummy_b = dummy_b->related_breakpoint; | |
7230 | if (dummy_b->type != bp_call_dummy | |
7231 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7232 | continue; | |
7233 | ||
7234 | dummy_frame_discard (dummy_b->frame_id); | |
7235 | ||
7236 | while (b->related_breakpoint != b) | |
7237 | { | |
7238 | if (b_tmp == b->related_breakpoint) | |
7239 | b_tmp = b->related_breakpoint->next; | |
7240 | delete_breakpoint (b->related_breakpoint); | |
7241 | } | |
7242 | delete_breakpoint (b); | |
7243 | } | |
7244 | } | |
7245 | ||
1900040c MS |
7246 | void |
7247 | enable_overlay_breakpoints (void) | |
7248 | { | |
52f0bd74 | 7249 | struct breakpoint *b; |
1900040c MS |
7250 | |
7251 | ALL_BREAKPOINTS (b) | |
7252 | if (b->type == bp_overlay_event) | |
7253 | { | |
7254 | b->enable_state = bp_enabled; | |
b60e7edf | 7255 | update_global_location_list (1); |
c02f5703 | 7256 | overlay_events_enabled = 1; |
1900040c MS |
7257 | } |
7258 | } | |
7259 | ||
7260 | void | |
7261 | disable_overlay_breakpoints (void) | |
7262 | { | |
52f0bd74 | 7263 | struct breakpoint *b; |
1900040c MS |
7264 | |
7265 | ALL_BREAKPOINTS (b) | |
7266 | if (b->type == bp_overlay_event) | |
7267 | { | |
7268 | b->enable_state = bp_disabled; | |
b60e7edf | 7269 | update_global_location_list (0); |
c02f5703 | 7270 | overlay_events_enabled = 0; |
1900040c MS |
7271 | } |
7272 | } | |
7273 | ||
aa7d318d TT |
7274 | /* Set an active std::terminate breakpoint for each std::terminate |
7275 | master breakpoint. */ | |
7276 | void | |
7277 | set_std_terminate_breakpoint (void) | |
7278 | { | |
35df4500 | 7279 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7280 | |
35df4500 | 7281 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7282 | if (b->pspace == current_program_space |
7283 | && b->type == bp_std_terminate_master) | |
7284 | { | |
06edf0c0 PA |
7285 | momentary_breakpoint_from_master (b, bp_std_terminate, |
7286 | &momentary_breakpoint_ops); | |
aa7d318d TT |
7287 | } |
7288 | } | |
7289 | ||
7290 | /* Delete all the std::terminate breakpoints. */ | |
7291 | void | |
7292 | delete_std_terminate_breakpoint (void) | |
7293 | { | |
35df4500 | 7294 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7295 | |
35df4500 | 7296 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7297 | if (b->type == bp_std_terminate) |
7298 | delete_breakpoint (b); | |
7299 | } | |
7300 | ||
c4093a6a | 7301 | struct breakpoint * |
a6d9a66e | 7302 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7303 | { |
7304 | struct breakpoint *b; | |
c4093a6a | 7305 | |
06edf0c0 PA |
7306 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7307 | &internal_breakpoint_ops); | |
7308 | ||
b5de0fa7 | 7309 | b->enable_state = bp_enabled; |
c4093a6a | 7310 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5af949e3 UW |
7311 | b->addr_string |
7312 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
c4093a6a | 7313 | |
b60e7edf | 7314 | update_global_location_list_nothrow (1); |
74960c60 | 7315 | |
c4093a6a JM |
7316 | return b; |
7317 | } | |
7318 | ||
7319 | void | |
7320 | remove_thread_event_breakpoints (void) | |
7321 | { | |
35df4500 | 7322 | struct breakpoint *b, *b_tmp; |
c4093a6a | 7323 | |
35df4500 | 7324 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7325 | if (b->type == bp_thread_event |
7326 | && b->loc->pspace == current_program_space) | |
c4093a6a JM |
7327 | delete_breakpoint (b); |
7328 | } | |
7329 | ||
0101ce28 JJ |
7330 | struct lang_and_radix |
7331 | { | |
7332 | enum language lang; | |
7333 | int radix; | |
7334 | }; | |
7335 | ||
4efc6507 DE |
7336 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7337 | ||
7338 | struct breakpoint * | |
7339 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7340 | { | |
7341 | struct breakpoint *b; | |
7342 | ||
06edf0c0 PA |
7343 | b = create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7344 | &internal_breakpoint_ops); | |
4efc6507 DE |
7345 | update_global_location_list_nothrow (1); |
7346 | return b; | |
7347 | } | |
0101ce28 | 7348 | |
03673fc7 PP |
7349 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7350 | ||
7351 | void | |
7352 | remove_jit_event_breakpoints (void) | |
7353 | { | |
7354 | struct breakpoint *b, *b_tmp; | |
7355 | ||
7356 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7357 | if (b->type == bp_jit_event | |
7358 | && b->loc->pspace == current_program_space) | |
7359 | delete_breakpoint (b); | |
7360 | } | |
7361 | ||
cae688ec JJ |
7362 | void |
7363 | remove_solib_event_breakpoints (void) | |
7364 | { | |
35df4500 | 7365 | struct breakpoint *b, *b_tmp; |
cae688ec | 7366 | |
35df4500 | 7367 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7368 | if (b->type == bp_shlib_event |
7369 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7370 | delete_breakpoint (b); |
7371 | } | |
7372 | ||
7373 | struct breakpoint * | |
a6d9a66e | 7374 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
cae688ec JJ |
7375 | { |
7376 | struct breakpoint *b; | |
7377 | ||
06edf0c0 PA |
7378 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7379 | &internal_breakpoint_ops); | |
b60e7edf | 7380 | update_global_location_list_nothrow (1); |
cae688ec JJ |
7381 | return b; |
7382 | } | |
7383 | ||
7384 | /* Disable any breakpoints that are on code in shared libraries. Only | |
7385 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7386 | ||
7387 | void | |
cb851954 | 7388 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7389 | { |
876fa593 | 7390 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7391 | |
876fa593 | 7392 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7393 | { |
2bdf28a0 | 7394 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7395 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7396 | |
4a64f543 MS |
7397 | /* We apply the check to all breakpoints, including disabled for |
7398 | those with loc->duplicate set. This is so that when breakpoint | |
7399 | becomes enabled, or the duplicate is removed, gdb will try to | |
7400 | insert all breakpoints. If we don't set shlib_disabled here, | |
7401 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7402 | if (((b->type == bp_breakpoint) |
508ccb1f | 7403 | || (b->type == bp_jit_event) |
1042e4c0 | 7404 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7405 | || (is_tracepoint (b))) |
6c95b8df | 7406 | && loc->pspace == current_program_space |
0d381245 | 7407 | && !loc->shlib_disabled |
a77053c2 | 7408 | #ifdef PC_SOLIB |
0d381245 | 7409 | && PC_SOLIB (loc->address) |
a77053c2 | 7410 | #else |
6c95b8df | 7411 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 MK |
7412 | #endif |
7413 | ) | |
0d381245 VP |
7414 | { |
7415 | loc->shlib_disabled = 1; | |
7416 | } | |
cae688ec JJ |
7417 | } |
7418 | } | |
7419 | ||
1e4d1764 YQ |
7420 | /* Disable any breakpoints and tracepoints that are in an unloaded shared |
7421 | library. Only apply to enabled breakpoints, disabled ones can just stay | |
4a64f543 | 7422 | disabled. */ |
84acb35a | 7423 | |
75149521 | 7424 | static void |
84acb35a JJ |
7425 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7426 | { | |
876fa593 | 7427 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7428 | int disabled_shlib_breaks = 0; |
7429 | ||
c86cf029 VP |
7430 | /* SunOS a.out shared libraries are always mapped, so do not |
7431 | disable breakpoints; they will only be reported as unloaded | |
7432 | through clear_solib when GDB discards its shared library | |
7433 | list. See clear_solib for more information. */ | |
7434 | if (exec_bfd != NULL | |
7435 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
7436 | return; | |
7437 | ||
876fa593 | 7438 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7439 | { |
2bdf28a0 | 7440 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7441 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7442 | |
1e4d1764 | 7443 | if (solib->pspace == loc->pspace |
e2dd7057 | 7444 | && !loc->shlib_disabled |
1e4d1764 YQ |
7445 | && (((b->type == bp_breakpoint |
7446 | || b->type == bp_jit_event | |
7447 | || b->type == bp_hardware_breakpoint) | |
7448 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7449 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7450 | || is_tracepoint (b)) | |
e2dd7057 | 7451 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7452 | { |
e2dd7057 PP |
7453 | loc->shlib_disabled = 1; |
7454 | /* At this point, we cannot rely on remove_breakpoint | |
7455 | succeeding so we must mark the breakpoint as not inserted | |
7456 | to prevent future errors occurring in remove_breakpoints. */ | |
7457 | loc->inserted = 0; | |
8d3788bd VP |
7458 | |
7459 | /* This may cause duplicate notifications for the same breakpoint. */ | |
7460 | observer_notify_breakpoint_modified (b); | |
7461 | ||
e2dd7057 PP |
7462 | if (!disabled_shlib_breaks) |
7463 | { | |
7464 | target_terminal_ours_for_output (); | |
3e43a32a MS |
7465 | warning (_("Temporarily disabling breakpoints " |
7466 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7467 | solib->so_name); |
84acb35a | 7468 | } |
e2dd7057 | 7469 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7470 | } |
7471 | } | |
84acb35a JJ |
7472 | } |
7473 | ||
ce78b96d JB |
7474 | /* FORK & VFORK catchpoints. */ |
7475 | ||
e29a4733 PA |
7476 | /* An instance of this type is used to represent a fork or vfork |
7477 | catchpoint. It includes a "struct breakpoint" as a kind of base | |
7478 | class; users downcast to "struct breakpoint *" when needed. A | |
7479 | breakpoint is really of this type iff its ops pointer points to | |
7480 | CATCH_FORK_BREAKPOINT_OPS. */ | |
7481 | ||
7482 | struct fork_catchpoint | |
7483 | { | |
7484 | /* The base class. */ | |
7485 | struct breakpoint base; | |
7486 | ||
7487 | /* Process id of a child process whose forking triggered this | |
7488 | catchpoint. This field is only valid immediately after this | |
7489 | catchpoint has triggered. */ | |
7490 | ptid_t forked_inferior_pid; | |
7491 | }; | |
7492 | ||
4a64f543 MS |
7493 | /* Implement the "insert" breakpoint_ops method for fork |
7494 | catchpoints. */ | |
ce78b96d | 7495 | |
77b06cd7 TJB |
7496 | static int |
7497 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7498 | { |
77b06cd7 | 7499 | return target_insert_fork_catchpoint (PIDGET (inferior_ptid)); |
ce78b96d JB |
7500 | } |
7501 | ||
4a64f543 MS |
7502 | /* Implement the "remove" breakpoint_ops method for fork |
7503 | catchpoints. */ | |
ce78b96d JB |
7504 | |
7505 | static int | |
77b06cd7 | 7506 | remove_catch_fork (struct bp_location *bl) |
ce78b96d JB |
7507 | { |
7508 | return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); | |
7509 | } | |
7510 | ||
7511 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7512 | catchpoints. */ | |
7513 | ||
7514 | static int | |
f1310107 | 7515 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
09ac7c10 TT |
7516 | struct address_space *aspace, CORE_ADDR bp_addr, |
7517 | const struct target_waitstatus *ws) | |
ce78b96d | 7518 | { |
e29a4733 PA |
7519 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7520 | ||
f90263c1 TT |
7521 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7522 | return 0; | |
7523 | ||
7524 | c->forked_inferior_pid = ws->value.related_pid; | |
7525 | return 1; | |
ce78b96d JB |
7526 | } |
7527 | ||
4a64f543 MS |
7528 | /* Implement the "print_it" breakpoint_ops method for fork |
7529 | catchpoints. */ | |
ce78b96d JB |
7530 | |
7531 | static enum print_stop_action | |
348d480f | 7532 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7533 | { |
36dfb11c | 7534 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7535 | struct breakpoint *b = bs->breakpoint_at; |
7536 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7537 | |
ce78b96d | 7538 | annotate_catchpoint (b->number); |
36dfb11c TT |
7539 | if (b->disposition == disp_del) |
7540 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
7541 | else | |
7542 | ui_out_text (uiout, "\nCatchpoint "); | |
7543 | if (ui_out_is_mi_like_p (uiout)) | |
7544 | { | |
7545 | ui_out_field_string (uiout, "reason", | |
7546 | async_reason_lookup (EXEC_ASYNC_FORK)); | |
7547 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
7548 | } | |
7549 | ui_out_field_int (uiout, "bkptno", b->number); | |
7550 | ui_out_text (uiout, " (forked process "); | |
7551 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7552 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
7553 | return PRINT_SRC_AND_LOC; |
7554 | } | |
7555 | ||
4a64f543 MS |
7556 | /* Implement the "print_one" breakpoint_ops method for fork |
7557 | catchpoints. */ | |
ce78b96d JB |
7558 | |
7559 | static void | |
a6d9a66e | 7560 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7561 | { |
e29a4733 | 7562 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7563 | struct value_print_options opts; |
79a45e25 | 7564 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7565 | |
7566 | get_user_print_options (&opts); | |
7567 | ||
4a64f543 MS |
7568 | /* Field 4, the address, is omitted (which makes the columns not |
7569 | line up too nicely with the headers, but the effect is relatively | |
7570 | readable). */ | |
79a45b7d | 7571 | if (opts.addressprint) |
ce78b96d JB |
7572 | ui_out_field_skip (uiout, "addr"); |
7573 | annotate_field (5); | |
7574 | ui_out_text (uiout, "fork"); | |
e29a4733 | 7575 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
7576 | { |
7577 | ui_out_text (uiout, ", process "); | |
7578 | ui_out_field_int (uiout, "what", | |
e29a4733 | 7579 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
7580 | ui_out_spaces (uiout, 1); |
7581 | } | |
8ac3646f TT |
7582 | |
7583 | if (ui_out_is_mi_like_p (uiout)) | |
7584 | ui_out_field_string (uiout, "catch-type", "fork"); | |
ce78b96d JB |
7585 | } |
7586 | ||
7587 | /* Implement the "print_mention" breakpoint_ops method for fork | |
7588 | catchpoints. */ | |
7589 | ||
7590 | static void | |
7591 | print_mention_catch_fork (struct breakpoint *b) | |
7592 | { | |
7593 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
7594 | } | |
7595 | ||
6149aea9 PA |
7596 | /* Implement the "print_recreate" breakpoint_ops method for fork |
7597 | catchpoints. */ | |
7598 | ||
7599 | static void | |
7600 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
7601 | { | |
7602 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 7603 | print_recreate_thread (b, fp); |
6149aea9 PA |
7604 | } |
7605 | ||
ce78b96d JB |
7606 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
7607 | ||
2060206e | 7608 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 7609 | |
4a64f543 MS |
7610 | /* Implement the "insert" breakpoint_ops method for vfork |
7611 | catchpoints. */ | |
ce78b96d | 7612 | |
77b06cd7 TJB |
7613 | static int |
7614 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 7615 | { |
77b06cd7 | 7616 | return target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); |
ce78b96d JB |
7617 | } |
7618 | ||
4a64f543 MS |
7619 | /* Implement the "remove" breakpoint_ops method for vfork |
7620 | catchpoints. */ | |
ce78b96d JB |
7621 | |
7622 | static int | |
77b06cd7 | 7623 | remove_catch_vfork (struct bp_location *bl) |
ce78b96d JB |
7624 | { |
7625 | return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); | |
7626 | } | |
7627 | ||
7628 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
7629 | catchpoints. */ | |
7630 | ||
7631 | static int | |
f1310107 | 7632 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
09ac7c10 TT |
7633 | struct address_space *aspace, CORE_ADDR bp_addr, |
7634 | const struct target_waitstatus *ws) | |
ce78b96d | 7635 | { |
e29a4733 PA |
7636 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7637 | ||
f90263c1 TT |
7638 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
7639 | return 0; | |
7640 | ||
7641 | c->forked_inferior_pid = ws->value.related_pid; | |
7642 | return 1; | |
ce78b96d JB |
7643 | } |
7644 | ||
4a64f543 MS |
7645 | /* Implement the "print_it" breakpoint_ops method for vfork |
7646 | catchpoints. */ | |
ce78b96d JB |
7647 | |
7648 | static enum print_stop_action | |
348d480f | 7649 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 7650 | { |
36dfb11c | 7651 | struct ui_out *uiout = current_uiout; |
348d480f | 7652 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
7653 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
7654 | ||
ce78b96d | 7655 | annotate_catchpoint (b->number); |
36dfb11c TT |
7656 | if (b->disposition == disp_del) |
7657 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
7658 | else | |
7659 | ui_out_text (uiout, "\nCatchpoint "); | |
7660 | if (ui_out_is_mi_like_p (uiout)) | |
7661 | { | |
7662 | ui_out_field_string (uiout, "reason", | |
7663 | async_reason_lookup (EXEC_ASYNC_VFORK)); | |
7664 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
7665 | } | |
7666 | ui_out_field_int (uiout, "bkptno", b->number); | |
7667 | ui_out_text (uiout, " (vforked process "); | |
7668 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7669 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
7670 | return PRINT_SRC_AND_LOC; |
7671 | } | |
7672 | ||
4a64f543 MS |
7673 | /* Implement the "print_one" breakpoint_ops method for vfork |
7674 | catchpoints. */ | |
ce78b96d JB |
7675 | |
7676 | static void | |
a6d9a66e | 7677 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7678 | { |
e29a4733 | 7679 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7680 | struct value_print_options opts; |
79a45e25 | 7681 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7682 | |
7683 | get_user_print_options (&opts); | |
4a64f543 MS |
7684 | /* Field 4, the address, is omitted (which makes the columns not |
7685 | line up too nicely with the headers, but the effect is relatively | |
7686 | readable). */ | |
79a45b7d | 7687 | if (opts.addressprint) |
ce78b96d JB |
7688 | ui_out_field_skip (uiout, "addr"); |
7689 | annotate_field (5); | |
7690 | ui_out_text (uiout, "vfork"); | |
e29a4733 | 7691 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
7692 | { |
7693 | ui_out_text (uiout, ", process "); | |
7694 | ui_out_field_int (uiout, "what", | |
e29a4733 | 7695 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
7696 | ui_out_spaces (uiout, 1); |
7697 | } | |
8ac3646f TT |
7698 | |
7699 | if (ui_out_is_mi_like_p (uiout)) | |
7700 | ui_out_field_string (uiout, "catch-type", "vfork"); | |
ce78b96d JB |
7701 | } |
7702 | ||
7703 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
7704 | catchpoints. */ | |
7705 | ||
7706 | static void | |
7707 | print_mention_catch_vfork (struct breakpoint *b) | |
7708 | { | |
7709 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
7710 | } | |
7711 | ||
6149aea9 PA |
7712 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
7713 | catchpoints. */ | |
7714 | ||
7715 | static void | |
7716 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
7717 | { | |
7718 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 7719 | print_recreate_thread (b, fp); |
6149aea9 PA |
7720 | } |
7721 | ||
ce78b96d JB |
7722 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
7723 | ||
2060206e | 7724 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 7725 | |
edcc5120 TT |
7726 | /* An instance of this type is used to represent an solib catchpoint. |
7727 | It includes a "struct breakpoint" as a kind of base class; users | |
7728 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
7729 | really of this type iff its ops pointer points to | |
7730 | CATCH_SOLIB_BREAKPOINT_OPS. */ | |
7731 | ||
7732 | struct solib_catchpoint | |
7733 | { | |
7734 | /* The base class. */ | |
7735 | struct breakpoint base; | |
7736 | ||
7737 | /* True for "catch load", false for "catch unload". */ | |
7738 | unsigned char is_load; | |
7739 | ||
7740 | /* Regular expression to match, if any. COMPILED is only valid when | |
7741 | REGEX is non-NULL. */ | |
7742 | char *regex; | |
7743 | regex_t compiled; | |
7744 | }; | |
7745 | ||
7746 | static void | |
7747 | dtor_catch_solib (struct breakpoint *b) | |
7748 | { | |
7749 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7750 | ||
7751 | if (self->regex) | |
7752 | regfree (&self->compiled); | |
7753 | xfree (self->regex); | |
7754 | ||
7755 | base_breakpoint_ops.dtor (b); | |
7756 | } | |
7757 | ||
7758 | static int | |
7759 | insert_catch_solib (struct bp_location *ignore) | |
7760 | { | |
7761 | return 0; | |
7762 | } | |
7763 | ||
7764 | static int | |
7765 | remove_catch_solib (struct bp_location *ignore) | |
7766 | { | |
7767 | return 0; | |
7768 | } | |
7769 | ||
7770 | static int | |
7771 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
7772 | struct address_space *aspace, | |
7773 | CORE_ADDR bp_addr, | |
7774 | const struct target_waitstatus *ws) | |
7775 | { | |
7776 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
7777 | struct breakpoint *other; | |
7778 | ||
7779 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
7780 | return 1; | |
7781 | ||
7782 | ALL_BREAKPOINTS (other) | |
7783 | { | |
7784 | struct bp_location *other_bl; | |
7785 | ||
7786 | if (other == bl->owner) | |
7787 | continue; | |
7788 | ||
7789 | if (other->type != bp_shlib_event) | |
7790 | continue; | |
7791 | ||
7792 | if (self->base.pspace != NULL && other->pspace != self->base.pspace) | |
7793 | continue; | |
7794 | ||
7795 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
7796 | { | |
7797 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
7798 | return 1; | |
7799 | } | |
7800 | } | |
7801 | ||
7802 | return 0; | |
7803 | } | |
7804 | ||
7805 | static void | |
7806 | check_status_catch_solib (struct bpstats *bs) | |
7807 | { | |
7808 | struct solib_catchpoint *self | |
7809 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
7810 | int ix; | |
7811 | ||
7812 | if (self->is_load) | |
7813 | { | |
7814 | struct so_list *iter; | |
7815 | ||
7816 | for (ix = 0; | |
7817 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
7818 | ix, iter); | |
7819 | ++ix) | |
7820 | { | |
7821 | if (!self->regex | |
7822 | || regexec (&self->compiled, iter->so_name, 0, NULL, 0) == 0) | |
7823 | return; | |
7824 | } | |
7825 | } | |
7826 | else | |
7827 | { | |
7828 | char *iter; | |
7829 | ||
7830 | for (ix = 0; | |
7831 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
7832 | ix, iter); | |
7833 | ++ix) | |
7834 | { | |
7835 | if (!self->regex | |
7836 | || regexec (&self->compiled, iter, 0, NULL, 0) == 0) | |
7837 | return; | |
7838 | } | |
7839 | } | |
7840 | ||
7841 | bs->stop = 0; | |
7842 | bs->print_it = print_it_noop; | |
7843 | } | |
7844 | ||
7845 | static enum print_stop_action | |
7846 | print_it_catch_solib (bpstat bs) | |
7847 | { | |
7848 | struct breakpoint *b = bs->breakpoint_at; | |
7849 | struct ui_out *uiout = current_uiout; | |
7850 | ||
7851 | annotate_catchpoint (b->number); | |
7852 | if (b->disposition == disp_del) | |
7853 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
7854 | else | |
7855 | ui_out_text (uiout, "\nCatchpoint "); | |
7856 | ui_out_field_int (uiout, "bkptno", b->number); | |
7857 | ui_out_text (uiout, "\n"); | |
7858 | if (ui_out_is_mi_like_p (uiout)) | |
7859 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
7860 | print_solib_event (1); | |
7861 | return PRINT_SRC_AND_LOC; | |
7862 | } | |
7863 | ||
7864 | static void | |
7865 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
7866 | { | |
7867 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7868 | struct value_print_options opts; | |
7869 | struct ui_out *uiout = current_uiout; | |
7870 | char *msg; | |
7871 | ||
7872 | get_user_print_options (&opts); | |
7873 | /* Field 4, the address, is omitted (which makes the columns not | |
7874 | line up too nicely with the headers, but the effect is relatively | |
7875 | readable). */ | |
7876 | if (opts.addressprint) | |
7877 | { | |
7878 | annotate_field (4); | |
7879 | ui_out_field_skip (uiout, "addr"); | |
7880 | } | |
7881 | ||
7882 | annotate_field (5); | |
7883 | if (self->is_load) | |
7884 | { | |
7885 | if (self->regex) | |
7886 | msg = xstrprintf (_("load of library matching %s"), self->regex); | |
7887 | else | |
7888 | msg = xstrdup (_("load of library")); | |
7889 | } | |
7890 | else | |
7891 | { | |
7892 | if (self->regex) | |
7893 | msg = xstrprintf (_("unload of library matching %s"), self->regex); | |
7894 | else | |
7895 | msg = xstrdup (_("unload of library")); | |
7896 | } | |
7897 | ui_out_field_string (uiout, "what", msg); | |
7898 | xfree (msg); | |
8ac3646f TT |
7899 | |
7900 | if (ui_out_is_mi_like_p (uiout)) | |
7901 | ui_out_field_string (uiout, "catch-type", | |
7902 | self->is_load ? "load" : "unload"); | |
edcc5120 TT |
7903 | } |
7904 | ||
7905 | static void | |
7906 | print_mention_catch_solib (struct breakpoint *b) | |
7907 | { | |
7908 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7909 | ||
7910 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
7911 | self->is_load ? "load" : "unload"); | |
7912 | } | |
7913 | ||
7914 | static void | |
7915 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
7916 | { | |
7917 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7918 | ||
7919 | fprintf_unfiltered (fp, "%s %s", | |
7920 | b->disposition == disp_del ? "tcatch" : "catch", | |
7921 | self->is_load ? "load" : "unload"); | |
7922 | if (self->regex) | |
7923 | fprintf_unfiltered (fp, " %s", self->regex); | |
7924 | fprintf_unfiltered (fp, "\n"); | |
7925 | } | |
7926 | ||
7927 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
7928 | ||
91985142 MG |
7929 | /* Shared helper function (MI and CLI) for creating and installing |
7930 | a shared object event catchpoint. If IS_LOAD is non-zero then | |
7931 | the events to be caught are load events, otherwise they are | |
7932 | unload events. If IS_TEMP is non-zero the catchpoint is a | |
7933 | temporary one. If ENABLED is non-zero the catchpoint is | |
7934 | created in an enabled state. */ | |
edcc5120 | 7935 | |
91985142 MG |
7936 | void |
7937 | add_solib_catchpoint (char *arg, int is_load, int is_temp, int enabled) | |
edcc5120 TT |
7938 | { |
7939 | struct solib_catchpoint *c; | |
7940 | struct gdbarch *gdbarch = get_current_arch (); | |
edcc5120 TT |
7941 | struct cleanup *cleanup; |
7942 | ||
edcc5120 TT |
7943 | if (!arg) |
7944 | arg = ""; | |
7945 | arg = skip_spaces (arg); | |
7946 | ||
7947 | c = XCNEW (struct solib_catchpoint); | |
7948 | cleanup = make_cleanup (xfree, c); | |
7949 | ||
7950 | if (*arg != '\0') | |
7951 | { | |
7952 | int errcode; | |
7953 | ||
7954 | errcode = regcomp (&c->compiled, arg, REG_NOSUB); | |
7955 | if (errcode != 0) | |
7956 | { | |
7957 | char *err = get_regcomp_error (errcode, &c->compiled); | |
7958 | ||
7959 | make_cleanup (xfree, err); | |
7960 | error (_("Invalid regexp (%s): %s"), err, arg); | |
7961 | } | |
7962 | c->regex = xstrdup (arg); | |
7963 | } | |
7964 | ||
7965 | c->is_load = is_load; | |
91985142 | 7966 | init_catchpoint (&c->base, gdbarch, is_temp, NULL, |
edcc5120 TT |
7967 | &catch_solib_breakpoint_ops); |
7968 | ||
91985142 MG |
7969 | c->base.enable_state = enabled ? bp_enabled : bp_disabled; |
7970 | ||
edcc5120 TT |
7971 | discard_cleanups (cleanup); |
7972 | install_breakpoint (0, &c->base, 1); | |
7973 | } | |
7974 | ||
91985142 MG |
7975 | /* A helper function that does all the work for "catch load" and |
7976 | "catch unload". */ | |
7977 | ||
7978 | static void | |
7979 | catch_load_or_unload (char *arg, int from_tty, int is_load, | |
7980 | struct cmd_list_element *command) | |
7981 | { | |
7982 | int tempflag; | |
7983 | const int enabled = 1; | |
7984 | ||
7985 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
7986 | ||
7987 | add_solib_catchpoint (arg, is_load, tempflag, enabled); | |
7988 | } | |
7989 | ||
edcc5120 TT |
7990 | static void |
7991 | catch_load_command_1 (char *arg, int from_tty, | |
7992 | struct cmd_list_element *command) | |
7993 | { | |
7994 | catch_load_or_unload (arg, from_tty, 1, command); | |
7995 | } | |
7996 | ||
7997 | static void | |
7998 | catch_unload_command_1 (char *arg, int from_tty, | |
7999 | struct cmd_list_element *command) | |
8000 | { | |
8001 | catch_load_or_unload (arg, from_tty, 0, command); | |
8002 | } | |
8003 | ||
be5c67c1 PA |
8004 | /* An instance of this type is used to represent a syscall catchpoint. |
8005 | It includes a "struct breakpoint" as a kind of base class; users | |
8006 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
8007 | really of this type iff its ops pointer points to | |
8008 | CATCH_SYSCALL_BREAKPOINT_OPS. */ | |
8009 | ||
8010 | struct syscall_catchpoint | |
8011 | { | |
8012 | /* The base class. */ | |
8013 | struct breakpoint base; | |
8014 | ||
8015 | /* Syscall numbers used for the 'catch syscall' feature. If no | |
8016 | syscall has been specified for filtering, its value is NULL. | |
8017 | Otherwise, it holds a list of all syscalls to be caught. The | |
8018 | list elements are allocated with xmalloc. */ | |
8019 | VEC(int) *syscalls_to_be_caught; | |
8020 | }; | |
8021 | ||
8022 | /* Implement the "dtor" breakpoint_ops method for syscall | |
8023 | catchpoints. */ | |
8024 | ||
8025 | static void | |
8026 | dtor_catch_syscall (struct breakpoint *b) | |
8027 | { | |
8028 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; | |
8029 | ||
8030 | VEC_free (int, c->syscalls_to_be_caught); | |
348d480f | 8031 | |
2060206e | 8032 | base_breakpoint_ops.dtor (b); |
be5c67c1 PA |
8033 | } |
8034 | ||
fa3064dd YQ |
8035 | static const struct inferior_data *catch_syscall_inferior_data = NULL; |
8036 | ||
8037 | struct catch_syscall_inferior_data | |
8038 | { | |
8039 | /* We keep a count of the number of times the user has requested a | |
8040 | particular syscall to be tracked, and pass this information to the | |
8041 | target. This lets capable targets implement filtering directly. */ | |
8042 | ||
8043 | /* Number of times that "any" syscall is requested. */ | |
8044 | int any_syscall_count; | |
8045 | ||
8046 | /* Count of each system call. */ | |
8047 | VEC(int) *syscalls_counts; | |
8048 | ||
8049 | /* This counts all syscall catch requests, so we can readily determine | |
8050 | if any catching is necessary. */ | |
8051 | int total_syscalls_count; | |
8052 | }; | |
8053 | ||
8054 | static struct catch_syscall_inferior_data* | |
8055 | get_catch_syscall_inferior_data (struct inferior *inf) | |
8056 | { | |
8057 | struct catch_syscall_inferior_data *inf_data; | |
8058 | ||
8059 | inf_data = inferior_data (inf, catch_syscall_inferior_data); | |
8060 | if (inf_data == NULL) | |
8061 | { | |
8062 | inf_data = XZALLOC (struct catch_syscall_inferior_data); | |
8063 | set_inferior_data (inf, catch_syscall_inferior_data, inf_data); | |
8064 | } | |
8065 | ||
8066 | return inf_data; | |
8067 | } | |
8068 | ||
8069 | static void | |
8070 | catch_syscall_inferior_data_cleanup (struct inferior *inf, void *arg) | |
8071 | { | |
8072 | xfree (arg); | |
8073 | } | |
8074 | ||
8075 | ||
a96d9b2e SDJ |
8076 | /* Implement the "insert" breakpoint_ops method for syscall |
8077 | catchpoints. */ | |
8078 | ||
77b06cd7 TJB |
8079 | static int |
8080 | insert_catch_syscall (struct bp_location *bl) | |
a96d9b2e | 8081 | { |
be5c67c1 | 8082 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner; |
a96d9b2e | 8083 | struct inferior *inf = current_inferior (); |
fa3064dd YQ |
8084 | struct catch_syscall_inferior_data *inf_data |
8085 | = get_catch_syscall_inferior_data (inf); | |
a96d9b2e | 8086 | |
fa3064dd | 8087 | ++inf_data->total_syscalls_count; |
be5c67c1 | 8088 | if (!c->syscalls_to_be_caught) |
fa3064dd | 8089 | ++inf_data->any_syscall_count; |
a96d9b2e SDJ |
8090 | else |
8091 | { | |
8092 | int i, iter; | |
cc59ec59 | 8093 | |
a96d9b2e | 8094 | for (i = 0; |
be5c67c1 | 8095 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8096 | i++) |
8097 | { | |
8098 | int elem; | |
cc59ec59 | 8099 | |
fa3064dd | 8100 | if (iter >= VEC_length (int, inf_data->syscalls_counts)) |
a96d9b2e | 8101 | { |
fa3064dd | 8102 | int old_size = VEC_length (int, inf_data->syscalls_counts); |
3e43a32a MS |
8103 | uintptr_t vec_addr_offset |
8104 | = old_size * ((uintptr_t) sizeof (int)); | |
a96d9b2e | 8105 | uintptr_t vec_addr; |
fa3064dd YQ |
8106 | VEC_safe_grow (int, inf_data->syscalls_counts, iter + 1); |
8107 | vec_addr = ((uintptr_t) VEC_address (int, | |
8108 | inf_data->syscalls_counts) | |
8109 | + vec_addr_offset); | |
a96d9b2e SDJ |
8110 | memset ((void *) vec_addr, 0, |
8111 | (iter + 1 - old_size) * sizeof (int)); | |
8112 | } | |
fa3064dd YQ |
8113 | elem = VEC_index (int, inf_data->syscalls_counts, iter); |
8114 | VEC_replace (int, inf_data->syscalls_counts, iter, ++elem); | |
a96d9b2e SDJ |
8115 | } |
8116 | } | |
8117 | ||
77b06cd7 | 8118 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), |
fa3064dd YQ |
8119 | inf_data->total_syscalls_count != 0, |
8120 | inf_data->any_syscall_count, | |
8121 | VEC_length (int, | |
8122 | inf_data->syscalls_counts), | |
8123 | VEC_address (int, | |
8124 | inf_data->syscalls_counts)); | |
a96d9b2e SDJ |
8125 | } |
8126 | ||
8127 | /* Implement the "remove" breakpoint_ops method for syscall | |
8128 | catchpoints. */ | |
8129 | ||
8130 | static int | |
77b06cd7 | 8131 | remove_catch_syscall (struct bp_location *bl) |
a96d9b2e | 8132 | { |
be5c67c1 | 8133 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner; |
a96d9b2e | 8134 | struct inferior *inf = current_inferior (); |
fa3064dd YQ |
8135 | struct catch_syscall_inferior_data *inf_data |
8136 | = get_catch_syscall_inferior_data (inf); | |
a96d9b2e | 8137 | |
fa3064dd | 8138 | --inf_data->total_syscalls_count; |
be5c67c1 | 8139 | if (!c->syscalls_to_be_caught) |
fa3064dd | 8140 | --inf_data->any_syscall_count; |
a96d9b2e SDJ |
8141 | else |
8142 | { | |
8143 | int i, iter; | |
cc59ec59 | 8144 | |
a96d9b2e | 8145 | for (i = 0; |
be5c67c1 | 8146 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8147 | i++) |
8148 | { | |
8149 | int elem; | |
fa3064dd | 8150 | if (iter >= VEC_length (int, inf_data->syscalls_counts)) |
a96d9b2e SDJ |
8151 | /* Shouldn't happen. */ |
8152 | continue; | |
fa3064dd YQ |
8153 | elem = VEC_index (int, inf_data->syscalls_counts, iter); |
8154 | VEC_replace (int, inf_data->syscalls_counts, iter, --elem); | |
a96d9b2e SDJ |
8155 | } |
8156 | } | |
8157 | ||
8158 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
fa3064dd YQ |
8159 | inf_data->total_syscalls_count != 0, |
8160 | inf_data->any_syscall_count, | |
8161 | VEC_length (int, | |
8162 | inf_data->syscalls_counts), | |
3e43a32a | 8163 | VEC_address (int, |
fa3064dd | 8164 | inf_data->syscalls_counts)); |
a96d9b2e SDJ |
8165 | } |
8166 | ||
8167 | /* Implement the "breakpoint_hit" breakpoint_ops method for syscall | |
8168 | catchpoints. */ | |
8169 | ||
8170 | static int | |
f1310107 | 8171 | breakpoint_hit_catch_syscall (const struct bp_location *bl, |
09ac7c10 TT |
8172 | struct address_space *aspace, CORE_ADDR bp_addr, |
8173 | const struct target_waitstatus *ws) | |
a96d9b2e | 8174 | { |
4a64f543 MS |
8175 | /* We must check if we are catching specific syscalls in this |
8176 | breakpoint. If we are, then we must guarantee that the called | |
8177 | syscall is the same syscall we are catching. */ | |
a96d9b2e | 8178 | int syscall_number = 0; |
be5c67c1 PA |
8179 | const struct syscall_catchpoint *c |
8180 | = (const struct syscall_catchpoint *) bl->owner; | |
a96d9b2e | 8181 | |
f90263c1 TT |
8182 | if (ws->kind != TARGET_WAITKIND_SYSCALL_ENTRY |
8183 | && ws->kind != TARGET_WAITKIND_SYSCALL_RETURN) | |
a96d9b2e SDJ |
8184 | return 0; |
8185 | ||
f90263c1 TT |
8186 | syscall_number = ws->value.syscall_number; |
8187 | ||
a96d9b2e | 8188 | /* Now, checking if the syscall is the same. */ |
be5c67c1 | 8189 | if (c->syscalls_to_be_caught) |
a96d9b2e SDJ |
8190 | { |
8191 | int i, iter; | |
cc59ec59 | 8192 | |
a96d9b2e | 8193 | for (i = 0; |
be5c67c1 | 8194 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8195 | i++) |
8196 | if (syscall_number == iter) | |
8197 | break; | |
8198 | /* Not the same. */ | |
8199 | if (!iter) | |
8200 | return 0; | |
8201 | } | |
8202 | ||
8203 | return 1; | |
8204 | } | |
8205 | ||
8206 | /* Implement the "print_it" breakpoint_ops method for syscall | |
8207 | catchpoints. */ | |
8208 | ||
8209 | static enum print_stop_action | |
348d480f | 8210 | print_it_catch_syscall (bpstat bs) |
a96d9b2e | 8211 | { |
36dfb11c | 8212 | struct ui_out *uiout = current_uiout; |
348d480f | 8213 | struct breakpoint *b = bs->breakpoint_at; |
a96d9b2e SDJ |
8214 | /* These are needed because we want to know in which state a |
8215 | syscall is. It can be in the TARGET_WAITKIND_SYSCALL_ENTRY | |
8216 | or TARGET_WAITKIND_SYSCALL_RETURN, and depending on it we | |
8217 | must print "called syscall" or "returned from syscall". */ | |
8218 | ptid_t ptid; | |
8219 | struct target_waitstatus last; | |
8220 | struct syscall s; | |
a96d9b2e SDJ |
8221 | |
8222 | get_last_target_status (&ptid, &last); | |
8223 | ||
8224 | get_syscall_by_number (last.value.syscall_number, &s); | |
8225 | ||
8226 | annotate_catchpoint (b->number); | |
8227 | ||
36dfb11c TT |
8228 | if (b->disposition == disp_del) |
8229 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
a96d9b2e | 8230 | else |
36dfb11c TT |
8231 | ui_out_text (uiout, "\nCatchpoint "); |
8232 | if (ui_out_is_mi_like_p (uiout)) | |
8233 | { | |
8234 | ui_out_field_string (uiout, "reason", | |
8235 | async_reason_lookup (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY | |
8236 | ? EXEC_ASYNC_SYSCALL_ENTRY | |
8237 | : EXEC_ASYNC_SYSCALL_RETURN)); | |
8238 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8239 | } | |
8240 | ui_out_field_int (uiout, "bkptno", b->number); | |
a96d9b2e SDJ |
8241 | |
8242 | if (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY) | |
36dfb11c TT |
8243 | ui_out_text (uiout, " (call to syscall "); |
8244 | else | |
8245 | ui_out_text (uiout, " (returned from syscall "); | |
a96d9b2e | 8246 | |
36dfb11c TT |
8247 | if (s.name == NULL || ui_out_is_mi_like_p (uiout)) |
8248 | ui_out_field_int (uiout, "syscall-number", last.value.syscall_number); | |
8249 | if (s.name != NULL) | |
8250 | ui_out_field_string (uiout, "syscall-name", s.name); | |
8251 | ||
8252 | ui_out_text (uiout, "), "); | |
a96d9b2e SDJ |
8253 | |
8254 | return PRINT_SRC_AND_LOC; | |
8255 | } | |
8256 | ||
8257 | /* Implement the "print_one" breakpoint_ops method for syscall | |
8258 | catchpoints. */ | |
8259 | ||
8260 | static void | |
8261 | print_one_catch_syscall (struct breakpoint *b, | |
f1310107 | 8262 | struct bp_location **last_loc) |
a96d9b2e | 8263 | { |
be5c67c1 | 8264 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
a96d9b2e | 8265 | struct value_print_options opts; |
79a45e25 | 8266 | struct ui_out *uiout = current_uiout; |
a96d9b2e SDJ |
8267 | |
8268 | get_user_print_options (&opts); | |
4a64f543 MS |
8269 | /* Field 4, the address, is omitted (which makes the columns not |
8270 | line up too nicely with the headers, but the effect is relatively | |
8271 | readable). */ | |
a96d9b2e SDJ |
8272 | if (opts.addressprint) |
8273 | ui_out_field_skip (uiout, "addr"); | |
8274 | annotate_field (5); | |
8275 | ||
be5c67c1 PA |
8276 | if (c->syscalls_to_be_caught |
8277 | && VEC_length (int, c->syscalls_to_be_caught) > 1) | |
a96d9b2e SDJ |
8278 | ui_out_text (uiout, "syscalls \""); |
8279 | else | |
8280 | ui_out_text (uiout, "syscall \""); | |
8281 | ||
be5c67c1 | 8282 | if (c->syscalls_to_be_caught) |
a96d9b2e SDJ |
8283 | { |
8284 | int i, iter; | |
8285 | char *text = xstrprintf ("%s", ""); | |
cc59ec59 | 8286 | |
a96d9b2e | 8287 | for (i = 0; |
be5c67c1 | 8288 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8289 | i++) |
8290 | { | |
8291 | char *x = text; | |
8292 | struct syscall s; | |
8293 | get_syscall_by_number (iter, &s); | |
8294 | ||
8295 | if (s.name != NULL) | |
8296 | text = xstrprintf ("%s%s, ", text, s.name); | |
8297 | else | |
8298 | text = xstrprintf ("%s%d, ", text, iter); | |
8299 | ||
8300 | /* We have to xfree the last 'text' (now stored at 'x') | |
e5dd4106 | 8301 | because xstrprintf dynamically allocates new space for it |
a96d9b2e SDJ |
8302 | on every call. */ |
8303 | xfree (x); | |
8304 | } | |
8305 | /* Remove the last comma. */ | |
8306 | text[strlen (text) - 2] = '\0'; | |
8307 | ui_out_field_string (uiout, "what", text); | |
8308 | } | |
8309 | else | |
8310 | ui_out_field_string (uiout, "what", "<any syscall>"); | |
8311 | ui_out_text (uiout, "\" "); | |
8ac3646f TT |
8312 | |
8313 | if (ui_out_is_mi_like_p (uiout)) | |
8314 | ui_out_field_string (uiout, "catch-type", "syscall"); | |
a96d9b2e SDJ |
8315 | } |
8316 | ||
8317 | /* Implement the "print_mention" breakpoint_ops method for syscall | |
8318 | catchpoints. */ | |
8319 | ||
8320 | static void | |
8321 | print_mention_catch_syscall (struct breakpoint *b) | |
8322 | { | |
be5c67c1 PA |
8323 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
8324 | ||
8325 | if (c->syscalls_to_be_caught) | |
a96d9b2e SDJ |
8326 | { |
8327 | int i, iter; | |
8328 | ||
be5c67c1 | 8329 | if (VEC_length (int, c->syscalls_to_be_caught) > 1) |
a96d9b2e SDJ |
8330 | printf_filtered (_("Catchpoint %d (syscalls"), b->number); |
8331 | else | |
8332 | printf_filtered (_("Catchpoint %d (syscall"), b->number); | |
8333 | ||
8334 | for (i = 0; | |
be5c67c1 | 8335 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8336 | i++) |
8337 | { | |
8338 | struct syscall s; | |
8339 | get_syscall_by_number (iter, &s); | |
8340 | ||
8341 | if (s.name) | |
8342 | printf_filtered (" '%s' [%d]", s.name, s.number); | |
8343 | else | |
8344 | printf_filtered (" %d", s.number); | |
8345 | } | |
8346 | printf_filtered (")"); | |
8347 | } | |
8348 | else | |
8349 | printf_filtered (_("Catchpoint %d (any syscall)"), | |
8350 | b->number); | |
8351 | } | |
8352 | ||
6149aea9 PA |
8353 | /* Implement the "print_recreate" breakpoint_ops method for syscall |
8354 | catchpoints. */ | |
8355 | ||
8356 | static void | |
8357 | print_recreate_catch_syscall (struct breakpoint *b, struct ui_file *fp) | |
8358 | { | |
be5c67c1 PA |
8359 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
8360 | ||
6149aea9 PA |
8361 | fprintf_unfiltered (fp, "catch syscall"); |
8362 | ||
be5c67c1 | 8363 | if (c->syscalls_to_be_caught) |
6149aea9 PA |
8364 | { |
8365 | int i, iter; | |
8366 | ||
8367 | for (i = 0; | |
be5c67c1 | 8368 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
6149aea9 PA |
8369 | i++) |
8370 | { | |
8371 | struct syscall s; | |
8372 | ||
8373 | get_syscall_by_number (iter, &s); | |
8374 | if (s.name) | |
8375 | fprintf_unfiltered (fp, " %s", s.name); | |
8376 | else | |
8377 | fprintf_unfiltered (fp, " %d", s.number); | |
8378 | } | |
8379 | } | |
d9b3f62e | 8380 | print_recreate_thread (b, fp); |
6149aea9 PA |
8381 | } |
8382 | ||
a96d9b2e SDJ |
8383 | /* The breakpoint_ops structure to be used in syscall catchpoints. */ |
8384 | ||
2060206e | 8385 | static struct breakpoint_ops catch_syscall_breakpoint_ops; |
a96d9b2e SDJ |
8386 | |
8387 | /* Returns non-zero if 'b' is a syscall catchpoint. */ | |
8388 | ||
8389 | static int | |
8390 | syscall_catchpoint_p (struct breakpoint *b) | |
8391 | { | |
8392 | return (b->ops == &catch_syscall_breakpoint_ops); | |
8393 | } | |
8394 | ||
346774a9 PA |
8395 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
8396 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
8397 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
8398 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 8399 | |
ab04a2af | 8400 | void |
346774a9 PA |
8401 | init_catchpoint (struct breakpoint *b, |
8402 | struct gdbarch *gdbarch, int tempflag, | |
8403 | char *cond_string, | |
c0a91b2b | 8404 | const struct breakpoint_ops *ops) |
c906108c | 8405 | { |
c5aa993b | 8406 | struct symtab_and_line sal; |
346774a9 | 8407 | |
fe39c653 | 8408 | init_sal (&sal); |
6c95b8df | 8409 | sal.pspace = current_program_space; |
c5aa993b | 8410 | |
28010a5d | 8411 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8412 | |
1b36a34b | 8413 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 8414 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
8415 | } |
8416 | ||
28010a5d | 8417 | void |
3ea46bff | 8418 | install_breakpoint (int internal, struct breakpoint *b, int update_gll) |
c56053d2 PA |
8419 | { |
8420 | add_to_breakpoint_chain (b); | |
3a5c3e22 | 8421 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8422 | if (is_tracepoint (b)) |
8423 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8424 | if (!internal) |
8425 | mention (b); | |
c56053d2 | 8426 | observer_notify_breakpoint_created (b); |
3ea46bff YQ |
8427 | |
8428 | if (update_gll) | |
8429 | update_global_location_list (1); | |
c56053d2 PA |
8430 | } |
8431 | ||
9b70b993 | 8432 | static void |
a6d9a66e UW |
8433 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
8434 | int tempflag, char *cond_string, | |
c0a91b2b | 8435 | const struct breakpoint_ops *ops) |
c906108c | 8436 | { |
e29a4733 | 8437 | struct fork_catchpoint *c = XNEW (struct fork_catchpoint); |
ce78b96d | 8438 | |
e29a4733 PA |
8439 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, ops); |
8440 | ||
8441 | c->forked_inferior_pid = null_ptid; | |
8442 | ||
3ea46bff | 8443 | install_breakpoint (0, &c->base, 1); |
c906108c SS |
8444 | } |
8445 | ||
fe798b75 JB |
8446 | /* Exec catchpoints. */ |
8447 | ||
b4d90040 PA |
8448 | /* An instance of this type is used to represent an exec catchpoint. |
8449 | It includes a "struct breakpoint" as a kind of base class; users | |
8450 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
8451 | really of this type iff its ops pointer points to | |
8452 | CATCH_EXEC_BREAKPOINT_OPS. */ | |
8453 | ||
8454 | struct exec_catchpoint | |
8455 | { | |
8456 | /* The base class. */ | |
8457 | struct breakpoint base; | |
8458 | ||
8459 | /* Filename of a program whose exec triggered this catchpoint. | |
8460 | This field is only valid immediately after this catchpoint has | |
8461 | triggered. */ | |
8462 | char *exec_pathname; | |
8463 | }; | |
8464 | ||
8465 | /* Implement the "dtor" breakpoint_ops method for exec | |
8466 | catchpoints. */ | |
8467 | ||
8468 | static void | |
8469 | dtor_catch_exec (struct breakpoint *b) | |
8470 | { | |
8471 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; | |
8472 | ||
8473 | xfree (c->exec_pathname); | |
348d480f | 8474 | |
2060206e | 8475 | base_breakpoint_ops.dtor (b); |
b4d90040 PA |
8476 | } |
8477 | ||
77b06cd7 TJB |
8478 | static int |
8479 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8480 | { |
77b06cd7 | 8481 | return target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
fe798b75 | 8482 | } |
c906108c | 8483 | |
fe798b75 | 8484 | static int |
77b06cd7 | 8485 | remove_catch_exec (struct bp_location *bl) |
fe798b75 JB |
8486 | { |
8487 | return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); | |
8488 | } | |
c906108c | 8489 | |
fe798b75 | 8490 | static int |
f1310107 | 8491 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
09ac7c10 TT |
8492 | struct address_space *aspace, CORE_ADDR bp_addr, |
8493 | const struct target_waitstatus *ws) | |
fe798b75 | 8494 | { |
b4d90040 PA |
8495 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8496 | ||
f90263c1 TT |
8497 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8498 | return 0; | |
8499 | ||
8500 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8501 | return 1; | |
fe798b75 | 8502 | } |
c906108c | 8503 | |
fe798b75 | 8504 | static enum print_stop_action |
348d480f | 8505 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8506 | { |
36dfb11c | 8507 | struct ui_out *uiout = current_uiout; |
348d480f | 8508 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8509 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8510 | ||
fe798b75 | 8511 | annotate_catchpoint (b->number); |
36dfb11c TT |
8512 | if (b->disposition == disp_del) |
8513 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
8514 | else | |
8515 | ui_out_text (uiout, "\nCatchpoint "); | |
8516 | if (ui_out_is_mi_like_p (uiout)) | |
8517 | { | |
8518 | ui_out_field_string (uiout, "reason", | |
8519 | async_reason_lookup (EXEC_ASYNC_EXEC)); | |
8520 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8521 | } | |
8522 | ui_out_field_int (uiout, "bkptno", b->number); | |
8523 | ui_out_text (uiout, " (exec'd "); | |
8524 | ui_out_field_string (uiout, "new-exec", c->exec_pathname); | |
8525 | ui_out_text (uiout, "), "); | |
8526 | ||
fe798b75 | 8527 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8528 | } |
8529 | ||
fe798b75 | 8530 | static void |
a6d9a66e | 8531 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8532 | { |
b4d90040 | 8533 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8534 | struct value_print_options opts; |
79a45e25 | 8535 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8536 | |
8537 | get_user_print_options (&opts); | |
8538 | ||
8539 | /* Field 4, the address, is omitted (which makes the columns | |
8540 | not line up too nicely with the headers, but the effect | |
8541 | is relatively readable). */ | |
8542 | if (opts.addressprint) | |
8543 | ui_out_field_skip (uiout, "addr"); | |
8544 | annotate_field (5); | |
8545 | ui_out_text (uiout, "exec"); | |
b4d90040 | 8546 | if (c->exec_pathname != NULL) |
fe798b75 JB |
8547 | { |
8548 | ui_out_text (uiout, ", program \""); | |
b4d90040 | 8549 | ui_out_field_string (uiout, "what", c->exec_pathname); |
fe798b75 JB |
8550 | ui_out_text (uiout, "\" "); |
8551 | } | |
8ac3646f TT |
8552 | |
8553 | if (ui_out_is_mi_like_p (uiout)) | |
8554 | ui_out_field_string (uiout, "catch-type", "exec"); | |
fe798b75 JB |
8555 | } |
8556 | ||
8557 | static void | |
8558 | print_mention_catch_exec (struct breakpoint *b) | |
8559 | { | |
8560 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8561 | } | |
8562 | ||
6149aea9 PA |
8563 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8564 | catchpoints. */ | |
8565 | ||
8566 | static void | |
8567 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8568 | { | |
8569 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8570 | print_recreate_thread (b, fp); |
6149aea9 PA |
8571 | } |
8572 | ||
2060206e | 8573 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8574 | |
a96d9b2e SDJ |
8575 | static void |
8576 | create_syscall_event_catchpoint (int tempflag, VEC(int) *filter, | |
c0a91b2b | 8577 | const struct breakpoint_ops *ops) |
a96d9b2e | 8578 | { |
be5c67c1 | 8579 | struct syscall_catchpoint *c; |
a96d9b2e | 8580 | struct gdbarch *gdbarch = get_current_arch (); |
a96d9b2e | 8581 | |
be5c67c1 PA |
8582 | c = XNEW (struct syscall_catchpoint); |
8583 | init_catchpoint (&c->base, gdbarch, tempflag, NULL, ops); | |
8584 | c->syscalls_to_be_caught = filter; | |
a96d9b2e | 8585 | |
3ea46bff | 8586 | install_breakpoint (0, &c->base, 1); |
a96d9b2e SDJ |
8587 | } |
8588 | ||
c906108c | 8589 | static int |
fba45db2 | 8590 | hw_breakpoint_used_count (void) |
c906108c | 8591 | { |
c906108c | 8592 | int i = 0; |
f1310107 TJB |
8593 | struct breakpoint *b; |
8594 | struct bp_location *bl; | |
c906108c SS |
8595 | |
8596 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8597 | { |
d6b74ac4 | 8598 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8599 | for (bl = b->loc; bl; bl = bl->next) |
8600 | { | |
8601 | /* Special types of hardware breakpoints may use more than | |
8602 | one register. */ | |
348d480f | 8603 | i += b->ops->resources_needed (bl); |
f1310107 | 8604 | } |
c5aa993b | 8605 | } |
c906108c SS |
8606 | |
8607 | return i; | |
8608 | } | |
8609 | ||
a1398e0c PA |
8610 | /* Returns the resources B would use if it were a hardware |
8611 | watchpoint. */ | |
8612 | ||
c906108c | 8613 | static int |
a1398e0c | 8614 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8615 | { |
c906108c | 8616 | int i = 0; |
e09342b5 | 8617 | struct bp_location *bl; |
c906108c | 8618 | |
a1398e0c PA |
8619 | if (!breakpoint_enabled (b)) |
8620 | return 0; | |
8621 | ||
8622 | for (bl = b->loc; bl; bl = bl->next) | |
8623 | { | |
8624 | /* Special types of hardware watchpoints may use more than | |
8625 | one register. */ | |
8626 | i += b->ops->resources_needed (bl); | |
8627 | } | |
8628 | ||
8629 | return i; | |
8630 | } | |
8631 | ||
8632 | /* Returns the sum the used resources of all hardware watchpoints of | |
8633 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8634 | the sum of the used resources of all hardware watchpoints of other | |
8635 | types _not_ TYPE. */ | |
8636 | ||
8637 | static int | |
8638 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8639 | enum bptype type, int *other_type_used) | |
8640 | { | |
8641 | int i = 0; | |
8642 | struct breakpoint *b; | |
8643 | ||
c906108c SS |
8644 | *other_type_used = 0; |
8645 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8646 | { |
a1398e0c PA |
8647 | if (b == except) |
8648 | continue; | |
e09342b5 TJB |
8649 | if (!breakpoint_enabled (b)) |
8650 | continue; | |
8651 | ||
a1398e0c PA |
8652 | if (b->type == type) |
8653 | i += hw_watchpoint_use_count (b); | |
8654 | else if (is_hardware_watchpoint (b)) | |
8655 | *other_type_used = 1; | |
e09342b5 TJB |
8656 | } |
8657 | ||
c906108c SS |
8658 | return i; |
8659 | } | |
8660 | ||
c906108c | 8661 | void |
fba45db2 | 8662 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8663 | { |
c5aa993b | 8664 | struct breakpoint *b; |
c906108c SS |
8665 | |
8666 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8667 | { |
cc60f2e3 | 8668 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8669 | { |
b5de0fa7 | 8670 | b->enable_state = bp_call_disabled; |
b60e7edf | 8671 | update_global_location_list (0); |
c5aa993b JM |
8672 | } |
8673 | } | |
c906108c SS |
8674 | } |
8675 | ||
8676 | void | |
fba45db2 | 8677 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8678 | { |
c5aa993b | 8679 | struct breakpoint *b; |
c906108c SS |
8680 | |
8681 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8682 | { |
cc60f2e3 | 8683 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8684 | { |
b5de0fa7 | 8685 | b->enable_state = bp_enabled; |
b60e7edf | 8686 | update_global_location_list (1); |
c5aa993b JM |
8687 | } |
8688 | } | |
c906108c SS |
8689 | } |
8690 | ||
8bea4e01 UW |
8691 | void |
8692 | disable_breakpoints_before_startup (void) | |
8693 | { | |
6c95b8df | 8694 | current_program_space->executing_startup = 1; |
f8eba3c6 | 8695 | update_global_location_list (0); |
8bea4e01 UW |
8696 | } |
8697 | ||
8698 | void | |
8699 | enable_breakpoints_after_startup (void) | |
8700 | { | |
6c95b8df | 8701 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8702 | breakpoint_re_set (); |
8bea4e01 UW |
8703 | } |
8704 | ||
c906108c SS |
8705 | |
8706 | /* Set a breakpoint that will evaporate an end of command | |
8707 | at address specified by SAL. | |
8708 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
8709 | ||
8710 | struct breakpoint * | |
a6d9a66e UW |
8711 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8712 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8713 | { |
52f0bd74 | 8714 | struct breakpoint *b; |
edb3359d | 8715 | |
193facb3 JK |
8716 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8717 | tail-called one. */ | |
8718 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8719 | |
06edf0c0 | 8720 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8721 | b->enable_state = bp_enabled; |
8722 | b->disposition = disp_donttouch; | |
818dd999 | 8723 | b->frame_id = frame_id; |
c906108c | 8724 | |
4a64f543 MS |
8725 | /* If we're debugging a multi-threaded program, then we want |
8726 | momentary breakpoints to be active in only a single thread of | |
8727 | control. */ | |
39f77062 KB |
8728 | if (in_thread_list (inferior_ptid)) |
8729 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 8730 | |
b60e7edf | 8731 | update_global_location_list_nothrow (1); |
74960c60 | 8732 | |
c906108c SS |
8733 | return b; |
8734 | } | |
611c83ae | 8735 | |
06edf0c0 PA |
8736 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
8737 | The new breakpoint will have type TYPE, and use OPS as it | |
8738 | breakpoint_ops. */ | |
e58b0e63 | 8739 | |
06edf0c0 PA |
8740 | static struct breakpoint * |
8741 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8742 | enum bptype type, | |
c0a91b2b | 8743 | const struct breakpoint_ops *ops) |
e58b0e63 PA |
8744 | { |
8745 | struct breakpoint *copy; | |
8746 | ||
06edf0c0 | 8747 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8748 | copy->loc = allocate_bp_location (copy); |
0e30163f | 8749 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 8750 | |
a6d9a66e | 8751 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8752 | copy->loc->requested_address = orig->loc->requested_address; |
8753 | copy->loc->address = orig->loc->address; | |
8754 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8755 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8756 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8757 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8758 | copy->loc->symtab = orig->loc->symtab; |
e58b0e63 PA |
8759 | copy->frame_id = orig->frame_id; |
8760 | copy->thread = orig->thread; | |
6c95b8df | 8761 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8762 | |
8763 | copy->enable_state = bp_enabled; | |
8764 | copy->disposition = disp_donttouch; | |
8765 | copy->number = internal_breakpoint_number--; | |
8766 | ||
8767 | update_global_location_list_nothrow (0); | |
8768 | return copy; | |
8769 | } | |
8770 | ||
06edf0c0 PA |
8771 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8772 | ORIG is NULL. */ | |
8773 | ||
8774 | struct breakpoint * | |
8775 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8776 | { | |
8777 | /* If there's nothing to clone, then return nothing. */ | |
8778 | if (orig == NULL) | |
8779 | return NULL; | |
8780 | ||
8781 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops); | |
8782 | } | |
8783 | ||
611c83ae | 8784 | struct breakpoint * |
a6d9a66e UW |
8785 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8786 | enum bptype type) | |
611c83ae PA |
8787 | { |
8788 | struct symtab_and_line sal; | |
8789 | ||
8790 | sal = find_pc_line (pc, 0); | |
8791 | sal.pc = pc; | |
8792 | sal.section = find_pc_overlay (pc); | |
8793 | sal.explicit_pc = 1; | |
8794 | ||
a6d9a66e | 8795 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8796 | } |
c906108c | 8797 | \f |
c5aa993b | 8798 | |
c906108c SS |
8799 | /* Tell the user we have just set a breakpoint B. */ |
8800 | ||
8801 | static void | |
fba45db2 | 8802 | mention (struct breakpoint *b) |
c906108c | 8803 | { |
348d480f | 8804 | b->ops->print_mention (b); |
79a45e25 | 8805 | if (ui_out_is_mi_like_p (current_uiout)) |
fb40c209 | 8806 | return; |
c906108c SS |
8807 | printf_filtered ("\n"); |
8808 | } | |
c906108c | 8809 | \f |
c5aa993b | 8810 | |
0d381245 | 8811 | static struct bp_location * |
39d61571 | 8812 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8813 | const struct symtab_and_line *sal) |
8814 | { | |
8815 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8816 | CORE_ADDR adjusted_address; |
8817 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8818 | ||
8819 | if (loc_gdbarch == NULL) | |
8820 | loc_gdbarch = b->gdbarch; | |
8821 | ||
8822 | /* Adjust the breakpoint's address prior to allocating a location. | |
8823 | Once we call allocate_bp_location(), that mostly uninitialized | |
8824 | location will be placed on the location chain. Adjustment of the | |
8825 | breakpoint may cause target_read_memory() to be called and we do | |
8826 | not want its scan of the location chain to find a breakpoint and | |
8827 | location that's only been partially initialized. */ | |
8828 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8829 | sal->pc, b->type); | |
0d381245 | 8830 | |
d30113d4 | 8831 | /* Sort the locations by their ADDRESS. */ |
39d61571 | 8832 | loc = allocate_bp_location (b); |
d30113d4 JK |
8833 | for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address; |
8834 | tmp = &((*tmp)->next)) | |
0d381245 | 8835 | ; |
d30113d4 | 8836 | loc->next = *tmp; |
0d381245 | 8837 | *tmp = loc; |
3742cc8b | 8838 | |
0d381245 | 8839 | loc->requested_address = sal->pc; |
3742cc8b | 8840 | loc->address = adjusted_address; |
6c95b8df | 8841 | loc->pspace = sal->pspace; |
55aa24fb | 8842 | loc->probe = sal->probe; |
6c95b8df | 8843 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8844 | loc->section = sal->section; |
3742cc8b | 8845 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 | 8846 | loc->line_number = sal->line; |
2f202fde | 8847 | loc->symtab = sal->symtab; |
f8eba3c6 | 8848 | |
0e30163f JK |
8849 | set_breakpoint_location_function (loc, |
8850 | sal->explicit_pc || sal->explicit_line); | |
0d381245 VP |
8851 | return loc; |
8852 | } | |
514f746b AR |
8853 | \f |
8854 | ||
8855 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
8856 | return 0 otherwise. */ | |
8857 | ||
8858 | static int | |
8859 | bp_loc_is_permanent (struct bp_location *loc) | |
8860 | { | |
8861 | int len; | |
8862 | CORE_ADDR addr; | |
1afeeb75 | 8863 | const gdb_byte *bpoint; |
514f746b | 8864 | gdb_byte *target_mem; |
939c61fa JK |
8865 | struct cleanup *cleanup; |
8866 | int retval = 0; | |
514f746b AR |
8867 | |
8868 | gdb_assert (loc != NULL); | |
8869 | ||
8870 | addr = loc->address; | |
1afeeb75 | 8871 | bpoint = gdbarch_breakpoint_from_pc (loc->gdbarch, &addr, &len); |
514f746b | 8872 | |
939c61fa | 8873 | /* Software breakpoints unsupported? */ |
1afeeb75 | 8874 | if (bpoint == NULL) |
939c61fa JK |
8875 | return 0; |
8876 | ||
514f746b AR |
8877 | target_mem = alloca (len); |
8878 | ||
939c61fa JK |
8879 | /* Enable the automatic memory restoration from breakpoints while |
8880 | we read the memory. Otherwise we could say about our temporary | |
8881 | breakpoints they are permanent. */ | |
6c95b8df PA |
8882 | cleanup = save_current_space_and_thread (); |
8883 | ||
8884 | switch_to_program_space_and_thread (loc->pspace); | |
8885 | make_show_memory_breakpoints_cleanup (0); | |
939c61fa | 8886 | |
514f746b | 8887 | if (target_read_memory (loc->address, target_mem, len) == 0 |
1afeeb75 | 8888 | && memcmp (target_mem, bpoint, len) == 0) |
939c61fa | 8889 | retval = 1; |
514f746b | 8890 | |
939c61fa JK |
8891 | do_cleanups (cleanup); |
8892 | ||
8893 | return retval; | |
514f746b AR |
8894 | } |
8895 | ||
e7e0cddf SS |
8896 | /* Build a command list for the dprintf corresponding to the current |
8897 | settings of the dprintf style options. */ | |
8898 | ||
8899 | static void | |
8900 | update_dprintf_command_list (struct breakpoint *b) | |
8901 | { | |
8902 | char *dprintf_args = b->extra_string; | |
8903 | char *printf_line = NULL; | |
8904 | ||
8905 | if (!dprintf_args) | |
8906 | return; | |
8907 | ||
8908 | dprintf_args = skip_spaces (dprintf_args); | |
8909 | ||
8910 | /* Allow a comma, as it may have terminated a location, but don't | |
8911 | insist on it. */ | |
8912 | if (*dprintf_args == ',') | |
8913 | ++dprintf_args; | |
8914 | dprintf_args = skip_spaces (dprintf_args); | |
8915 | ||
8916 | if (*dprintf_args != '"') | |
8917 | error (_("Bad format string, missing '\"'.")); | |
8918 | ||
d3ce09f5 | 8919 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8920 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8921 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
8922 | { |
8923 | if (!dprintf_function) | |
8924 | error (_("No function supplied for dprintf call")); | |
8925 | ||
8926 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
8927 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
8928 | dprintf_function, | |
8929 | dprintf_channel, | |
8930 | dprintf_args); | |
8931 | else | |
8932 | printf_line = xstrprintf ("call (void) %s (%s)", | |
8933 | dprintf_function, | |
8934 | dprintf_args); | |
8935 | } | |
d3ce09f5 SS |
8936 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8937 | { | |
8938 | if (target_can_run_breakpoint_commands ()) | |
8939 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8940 | else | |
8941 | { | |
8942 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8943 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8944 | } | |
8945 | } | |
e7e0cddf SS |
8946 | else |
8947 | internal_error (__FILE__, __LINE__, | |
8948 | _("Invalid dprintf style.")); | |
8949 | ||
f28045c2 | 8950 | gdb_assert (printf_line != NULL); |
e7e0cddf | 8951 | /* Manufacture a printf/continue sequence. */ |
f28045c2 YQ |
8952 | { |
8953 | struct command_line *printf_cmd_line, *cont_cmd_line = NULL; | |
e7e0cddf | 8954 | |
f28045c2 YQ |
8955 | if (strcmp (dprintf_style, dprintf_style_agent) != 0) |
8956 | { | |
8957 | cont_cmd_line = xmalloc (sizeof (struct command_line)); | |
8958 | cont_cmd_line->control_type = simple_control; | |
8959 | cont_cmd_line->body_count = 0; | |
8960 | cont_cmd_line->body_list = NULL; | |
8961 | cont_cmd_line->next = NULL; | |
8962 | cont_cmd_line->line = xstrdup ("continue"); | |
8963 | } | |
e7e0cddf | 8964 | |
f28045c2 YQ |
8965 | printf_cmd_line = xmalloc (sizeof (struct command_line)); |
8966 | printf_cmd_line->control_type = simple_control; | |
8967 | printf_cmd_line->body_count = 0; | |
8968 | printf_cmd_line->body_list = NULL; | |
8969 | printf_cmd_line->next = cont_cmd_line; | |
8970 | printf_cmd_line->line = printf_line; | |
e7e0cddf | 8971 | |
f28045c2 YQ |
8972 | breakpoint_set_commands (b, printf_cmd_line); |
8973 | } | |
e7e0cddf SS |
8974 | } |
8975 | ||
8976 | /* Update all dprintf commands, making their command lists reflect | |
8977 | current style settings. */ | |
8978 | ||
8979 | static void | |
8980 | update_dprintf_commands (char *args, int from_tty, | |
8981 | struct cmd_list_element *c) | |
8982 | { | |
8983 | struct breakpoint *b; | |
8984 | ||
8985 | ALL_BREAKPOINTS (b) | |
8986 | { | |
8987 | if (b->type == bp_dprintf) | |
8988 | update_dprintf_command_list (b); | |
8989 | } | |
8990 | } | |
c3f6f71d | 8991 | |
018d34a4 VP |
8992 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
8993 | as textual description of the location, and COND_STRING | |
db107f19 | 8994 | as condition expression. */ |
018d34a4 VP |
8995 | |
8996 | static void | |
d9b3f62e PA |
8997 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
8998 | struct symtabs_and_lines sals, char *addr_string, | |
f8eba3c6 | 8999 | char *filter, char *cond_string, |
e7e0cddf | 9000 | char *extra_string, |
d9b3f62e PA |
9001 | enum bptype type, enum bpdisp disposition, |
9002 | int thread, int task, int ignore_count, | |
c0a91b2b | 9003 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
9004 | int enabled, int internal, unsigned flags, |
9005 | int display_canonical) | |
018d34a4 | 9006 | { |
0d381245 | 9007 | int i; |
018d34a4 VP |
9008 | |
9009 | if (type == bp_hardware_breakpoint) | |
9010 | { | |
fbbd034e AS |
9011 | int target_resources_ok; |
9012 | ||
9013 | i = hw_breakpoint_used_count (); | |
9014 | target_resources_ok = | |
9015 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
9016 | i + 1, 0); |
9017 | if (target_resources_ok == 0) | |
9018 | error (_("No hardware breakpoint support in the target.")); | |
9019 | else if (target_resources_ok < 0) | |
9020 | error (_("Hardware breakpoints used exceeds limit.")); | |
9021 | } | |
9022 | ||
6c95b8df PA |
9023 | gdb_assert (sals.nelts > 0); |
9024 | ||
0d381245 VP |
9025 | for (i = 0; i < sals.nelts; ++i) |
9026 | { | |
9027 | struct symtab_and_line sal = sals.sals[i]; | |
9028 | struct bp_location *loc; | |
9029 | ||
9030 | if (from_tty) | |
5af949e3 UW |
9031 | { |
9032 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
9033 | if (!loc_gdbarch) | |
9034 | loc_gdbarch = gdbarch; | |
9035 | ||
9036 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 9037 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 9038 | } |
0d381245 VP |
9039 | |
9040 | if (i == 0) | |
9041 | { | |
d9b3f62e | 9042 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 9043 | b->thread = thread; |
4a306c9a | 9044 | b->task = task; |
855a6e68 | 9045 | |
0d381245 | 9046 | b->cond_string = cond_string; |
e7e0cddf | 9047 | b->extra_string = extra_string; |
0d381245 | 9048 | b->ignore_count = ignore_count; |
41447f92 | 9049 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 9050 | b->disposition = disposition; |
6c95b8df | 9051 | |
44f238bb PA |
9052 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
9053 | b->loc->inserted = 1; | |
9054 | ||
0fb4aa4b PA |
9055 | if (type == bp_static_tracepoint) |
9056 | { | |
d9b3f62e | 9057 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
9058 | struct static_tracepoint_marker marker; |
9059 | ||
983af33b | 9060 | if (strace_marker_p (b)) |
0fb4aa4b PA |
9061 | { |
9062 | /* We already know the marker exists, otherwise, we | |
9063 | wouldn't see a sal for it. */ | |
9064 | char *p = &addr_string[3]; | |
9065 | char *endp; | |
9066 | char *marker_str; | |
0fb4aa4b | 9067 | |
e9cafbcc | 9068 | p = skip_spaces (p); |
0fb4aa4b | 9069 | |
e9cafbcc | 9070 | endp = skip_to_space (p); |
0fb4aa4b PA |
9071 | |
9072 | marker_str = savestring (p, endp - p); | |
d9b3f62e | 9073 | t->static_trace_marker_id = marker_str; |
0fb4aa4b | 9074 | |
3e43a32a MS |
9075 | printf_filtered (_("Probed static tracepoint " |
9076 | "marker \"%s\"\n"), | |
d9b3f62e | 9077 | t->static_trace_marker_id); |
0fb4aa4b PA |
9078 | } |
9079 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
9080 | { | |
d9b3f62e | 9081 | t->static_trace_marker_id = xstrdup (marker.str_id); |
0fb4aa4b PA |
9082 | release_static_tracepoint_marker (&marker); |
9083 | ||
3e43a32a MS |
9084 | printf_filtered (_("Probed static tracepoint " |
9085 | "marker \"%s\"\n"), | |
d9b3f62e | 9086 | t->static_trace_marker_id); |
0fb4aa4b PA |
9087 | } |
9088 | else | |
3e43a32a MS |
9089 | warning (_("Couldn't determine the static " |
9090 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
9091 | } |
9092 | ||
0d381245 VP |
9093 | loc = b->loc; |
9094 | } | |
9095 | else | |
018d34a4 | 9096 | { |
39d61571 | 9097 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
9098 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
9099 | loc->inserted = 1; | |
0d381245 VP |
9100 | } |
9101 | ||
514f746b AR |
9102 | if (bp_loc_is_permanent (loc)) |
9103 | make_breakpoint_permanent (b); | |
9104 | ||
0d381245 VP |
9105 | if (b->cond_string) |
9106 | { | |
bbc13ae3 KS |
9107 | const char *arg = b->cond_string; |
9108 | ||
1bb9788d TT |
9109 | loc->cond = parse_exp_1 (&arg, loc->address, |
9110 | block_for_pc (loc->address), 0); | |
0d381245 | 9111 | if (*arg) |
588ae58c | 9112 | error (_("Garbage '%s' follows condition"), arg); |
018d34a4 | 9113 | } |
e7e0cddf SS |
9114 | |
9115 | /* Dynamic printf requires and uses additional arguments on the | |
9116 | command line, otherwise it's an error. */ | |
9117 | if (type == bp_dprintf) | |
9118 | { | |
9119 | if (b->extra_string) | |
9120 | update_dprintf_command_list (b); | |
9121 | else | |
9122 | error (_("Format string required")); | |
9123 | } | |
9124 | else if (b->extra_string) | |
588ae58c | 9125 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 9126 | } |
018d34a4 | 9127 | |
56435ebe | 9128 | b->display_canonical = display_canonical; |
018d34a4 VP |
9129 | if (addr_string) |
9130 | b->addr_string = addr_string; | |
9131 | else | |
9132 | /* addr_string has to be used or breakpoint_re_set will delete | |
9133 | me. */ | |
5af949e3 UW |
9134 | b->addr_string |
9135 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
f8eba3c6 | 9136 | b->filter = filter; |
d9b3f62e | 9137 | } |
018d34a4 | 9138 | |
d9b3f62e PA |
9139 | static void |
9140 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
9141 | struct symtabs_and_lines sals, char *addr_string, | |
f8eba3c6 | 9142 | char *filter, char *cond_string, |
e7e0cddf | 9143 | char *extra_string, |
d9b3f62e PA |
9144 | enum bptype type, enum bpdisp disposition, |
9145 | int thread, int task, int ignore_count, | |
c0a91b2b | 9146 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
9147 | int enabled, int internal, unsigned flags, |
9148 | int display_canonical) | |
d9b3f62e PA |
9149 | { |
9150 | struct breakpoint *b; | |
9151 | struct cleanup *old_chain; | |
9152 | ||
9153 | if (is_tracepoint_type (type)) | |
9154 | { | |
9155 | struct tracepoint *t; | |
9156 | ||
9157 | t = XCNEW (struct tracepoint); | |
9158 | b = &t->base; | |
9159 | } | |
9160 | else | |
9161 | b = XNEW (struct breakpoint); | |
9162 | ||
9163 | old_chain = make_cleanup (xfree, b); | |
9164 | ||
9165 | init_breakpoint_sal (b, gdbarch, | |
9166 | sals, addr_string, | |
e7e0cddf | 9167 | filter, cond_string, extra_string, |
d9b3f62e PA |
9168 | type, disposition, |
9169 | thread, task, ignore_count, | |
9170 | ops, from_tty, | |
44f238bb PA |
9171 | enabled, internal, flags, |
9172 | display_canonical); | |
d9b3f62e PA |
9173 | discard_cleanups (old_chain); |
9174 | ||
3ea46bff | 9175 | install_breakpoint (internal, b, 0); |
018d34a4 VP |
9176 | } |
9177 | ||
9178 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
9179 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
9180 | value. COND_STRING, if not NULL, specified the condition to be | |
9181 | used for all breakpoints. Essentially the only case where | |
9182 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
9183 | function. In that case, it's still not possible to specify | |
9184 | separate conditions for different overloaded functions, so | |
9185 | we take just a single condition string. | |
9186 | ||
c3f6f71d | 9187 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 9188 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
9189 | array contents). If the function fails (error() is called), the |
9190 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 9191 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
9192 | |
9193 | static void | |
8cdf0e15 | 9194 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 9195 | struct linespec_result *canonical, |
e7e0cddf | 9196 | char *cond_string, char *extra_string, |
8cdf0e15 VP |
9197 | enum bptype type, enum bpdisp disposition, |
9198 | int thread, int task, int ignore_count, | |
c0a91b2b | 9199 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 9200 | int enabled, int internal, unsigned flags) |
c906108c | 9201 | { |
018d34a4 | 9202 | int i; |
f8eba3c6 | 9203 | struct linespec_sals *lsal; |
cc59ec59 | 9204 | |
f8eba3c6 TT |
9205 | if (canonical->pre_expanded) |
9206 | gdb_assert (VEC_length (linespec_sals, canonical->sals) == 1); | |
9207 | ||
9208 | for (i = 0; VEC_iterate (linespec_sals, canonical->sals, i, lsal); ++i) | |
c3f6f71d | 9209 | { |
f8eba3c6 TT |
9210 | /* Note that 'addr_string' can be NULL in the case of a plain |
9211 | 'break', without arguments. */ | |
9212 | char *addr_string = (canonical->addr_string | |
9213 | ? xstrdup (canonical->addr_string) | |
9214 | : NULL); | |
9215 | char *filter_string = lsal->canonical ? xstrdup (lsal->canonical) : NULL; | |
9216 | struct cleanup *inner = make_cleanup (xfree, addr_string); | |
0d381245 | 9217 | |
f8eba3c6 TT |
9218 | make_cleanup (xfree, filter_string); |
9219 | create_breakpoint_sal (gdbarch, lsal->sals, | |
9220 | addr_string, | |
9221 | filter_string, | |
e7e0cddf SS |
9222 | cond_string, extra_string, |
9223 | type, disposition, | |
84f4c1fe | 9224 | thread, task, ignore_count, ops, |
44f238bb | 9225 | from_tty, enabled, internal, flags, |
56435ebe | 9226 | canonical->special_display); |
f8eba3c6 | 9227 | discard_cleanups (inner); |
c3f6f71d | 9228 | } |
c3f6f71d | 9229 | } |
c906108c | 9230 | |
9998af43 | 9231 | /* Parse ADDRESS which is assumed to be a SAL specification possibly |
c3f6f71d | 9232 | followed by conditionals. On return, SALS contains an array of SAL |
4a64f543 | 9233 | addresses found. ADDR_STRING contains a vector of (canonical) |
9998af43 TJB |
9234 | address strings. ADDRESS points to the end of the SAL. |
9235 | ||
9236 | The array and the line spec strings are allocated on the heap, it is | |
9237 | the caller's responsibility to free them. */ | |
c906108c | 9238 | |
b9362cc7 | 9239 | static void |
c3f6f71d | 9240 | parse_breakpoint_sals (char **address, |
58438ac1 | 9241 | struct linespec_result *canonical) |
c3f6f71d | 9242 | { |
c3f6f71d | 9243 | /* If no arg given, or if first arg is 'if ', use the default |
4a64f543 | 9244 | breakpoint. */ |
c3f6f71d JM |
9245 | if ((*address) == NULL |
9246 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c | 9247 | { |
1bfeeb0f JL |
9248 | /* The last displayed codepoint, if it's valid, is our default breakpoint |
9249 | address. */ | |
9250 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9251 | { |
f8eba3c6 | 9252 | struct linespec_sals lsal; |
c3f6f71d | 9253 | struct symtab_and_line sal; |
1c8cdcb1 | 9254 | CORE_ADDR pc; |
cc59ec59 | 9255 | |
4a64f543 | 9256 | init_sal (&sal); /* Initialize to zeroes. */ |
f8eba3c6 | 9257 | lsal.sals.sals = (struct symtab_and_line *) |
c906108c | 9258 | xmalloc (sizeof (struct symtab_and_line)); |
1bfeeb0f JL |
9259 | |
9260 | /* Set sal's pspace, pc, symtab, and line to the values | |
1c8cdcb1 JK |
9261 | corresponding to the last call to print_frame_info. |
9262 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
9263 | as the breakpoint line number is inappropriate otherwise. | |
9264 | find_pc_line would adjust PC, re-set it back. */ | |
1bfeeb0f | 9265 | get_last_displayed_sal (&sal); |
1c8cdcb1 JK |
9266 | pc = sal.pc; |
9267 | sal = find_pc_line (pc, 0); | |
00903456 | 9268 | |
4a64f543 | 9269 | /* "break" without arguments is equivalent to "break *PC" |
1bfeeb0f JL |
9270 | where PC is the last displayed codepoint's address. So |
9271 | make sure to set sal.explicit_pc to prevent GDB from | |
9272 | trying to expand the list of sals to include all other | |
9273 | instances with the same symtab and line. */ | |
1c8cdcb1 | 9274 | sal.pc = pc; |
00903456 JK |
9275 | sal.explicit_pc = 1; |
9276 | ||
f8eba3c6 TT |
9277 | lsal.sals.sals[0] = sal; |
9278 | lsal.sals.nelts = 1; | |
9279 | lsal.canonical = NULL; | |
9280 | ||
9281 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
c906108c SS |
9282 | } |
9283 | else | |
8a3fe4f8 | 9284 | error (_("No default breakpoint address now.")); |
c906108c SS |
9285 | } |
9286 | else | |
9287 | { | |
cc80f267 JK |
9288 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
9289 | ||
c906108c | 9290 | /* Force almost all breakpoints to be in terms of the |
4a64f543 MS |
9291 | current_source_symtab (which is decode_line_1's default). |
9292 | This should produce the results we want almost all of the | |
cc80f267 JK |
9293 | time while leaving default_breakpoint_* alone. |
9294 | ||
9295 | ObjC: However, don't match an Objective-C method name which | |
9296 | may have a '+' or '-' succeeded by a '['. */ | |
9297 | if (last_displayed_sal_is_valid () | |
9298 | && (!cursal.symtab | |
9299 | || ((strchr ("+-", (*address)[0]) != NULL) | |
9300 | && ((*address)[1] != '[')))) | |
f8eba3c6 TT |
9301 | decode_line_full (address, DECODE_LINE_FUNFIRSTLINE, |
9302 | get_last_displayed_symtab (), | |
9303 | get_last_displayed_line (), | |
9304 | canonical, NULL, NULL); | |
c906108c | 9305 | else |
f8eba3c6 | 9306 | decode_line_full (address, DECODE_LINE_FUNFIRSTLINE, |
cc80f267 | 9307 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c906108c | 9308 | } |
c3f6f71d | 9309 | } |
c906108c | 9310 | |
c906108c | 9311 | |
c3f6f71d | 9312 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9313 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9314 | |
b9362cc7 | 9315 | static void |
23e7acfb | 9316 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals) |
c3f6f71d JM |
9317 | { |
9318 | int i; | |
cc59ec59 | 9319 | |
c3f6f71d | 9320 | for (i = 0; i < sals->nelts; i++) |
ee53e872 | 9321 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
9322 | } |
9323 | ||
7a697b8d SS |
9324 | /* Fast tracepoints may have restrictions on valid locations. For |
9325 | instance, a fast tracepoint using a jump instead of a trap will | |
9326 | likely have to overwrite more bytes than a trap would, and so can | |
9327 | only be placed where the instruction is longer than the jump, or a | |
9328 | multi-instruction sequence does not have a jump into the middle of | |
9329 | it, etc. */ | |
9330 | ||
9331 | static void | |
9332 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
9333 | struct symtabs_and_lines *sals) | |
9334 | { | |
9335 | int i, rslt; | |
9336 | struct symtab_and_line *sal; | |
9337 | char *msg; | |
9338 | struct cleanup *old_chain; | |
9339 | ||
9340 | for (i = 0; i < sals->nelts; i++) | |
9341 | { | |
f8eba3c6 TT |
9342 | struct gdbarch *sarch; |
9343 | ||
7a697b8d SS |
9344 | sal = &sals->sals[i]; |
9345 | ||
f8eba3c6 TT |
9346 | sarch = get_sal_arch (*sal); |
9347 | /* We fall back to GDBARCH if there is no architecture | |
9348 | associated with SAL. */ | |
9349 | if (sarch == NULL) | |
9350 | sarch = gdbarch; | |
9351 | rslt = gdbarch_fast_tracepoint_valid_at (sarch, sal->pc, | |
7a697b8d SS |
9352 | NULL, &msg); |
9353 | old_chain = make_cleanup (xfree, msg); | |
9354 | ||
9355 | if (!rslt) | |
9356 | error (_("May not have a fast tracepoint at 0x%s%s"), | |
f8eba3c6 | 9357 | paddress (sarch, sal->pc), (msg ? msg : "")); |
7a697b8d SS |
9358 | |
9359 | do_cleanups (old_chain); | |
9360 | } | |
9361 | } | |
9362 | ||
af4908ba KS |
9363 | /* Issue an invalid thread ID error. */ |
9364 | ||
9365 | static void ATTRIBUTE_NORETURN | |
9366 | invalid_thread_id_error (int id) | |
9367 | { | |
9368 | error (_("Unknown thread %d."), id); | |
9369 | } | |
9370 | ||
018d34a4 VP |
9371 | /* Given TOK, a string specification of condition and thread, as |
9372 | accepted by the 'break' command, extract the condition | |
9373 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9374 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9375 | If no condition is found, *COND_STRING is set to NULL. |
9376 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9377 | |
9378 | static void | |
bbc13ae3 | 9379 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
e7e0cddf SS |
9380 | char **cond_string, int *thread, int *task, |
9381 | char **rest) | |
018d34a4 VP |
9382 | { |
9383 | *cond_string = NULL; | |
9384 | *thread = -1; | |
ed1d1739 KS |
9385 | *task = 0; |
9386 | *rest = NULL; | |
9387 | ||
018d34a4 VP |
9388 | while (tok && *tok) |
9389 | { | |
bbc13ae3 | 9390 | const char *end_tok; |
018d34a4 | 9391 | int toklen; |
bbc13ae3 KS |
9392 | const char *cond_start = NULL; |
9393 | const char *cond_end = NULL; | |
cc59ec59 | 9394 | |
bbc13ae3 | 9395 | tok = skip_spaces_const (tok); |
e7e0cddf SS |
9396 | |
9397 | if ((*tok == '"' || *tok == ',') && rest) | |
9398 | { | |
9399 | *rest = savestring (tok, strlen (tok)); | |
9400 | return; | |
9401 | } | |
9402 | ||
bbc13ae3 | 9403 | end_tok = skip_to_space_const (tok); |
d634f2de | 9404 | |
018d34a4 | 9405 | toklen = end_tok - tok; |
d634f2de | 9406 | |
018d34a4 VP |
9407 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9408 | { | |
f7545552 TT |
9409 | struct expression *expr; |
9410 | ||
018d34a4 | 9411 | tok = cond_start = end_tok + 1; |
1bb9788d | 9412 | expr = parse_exp_1 (&tok, pc, block_for_pc (pc), 0); |
f7545552 | 9413 | xfree (expr); |
018d34a4 | 9414 | cond_end = tok; |
d634f2de | 9415 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 VP |
9416 | } |
9417 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
9418 | { | |
9419 | char *tmptok; | |
d634f2de | 9420 | |
018d34a4 | 9421 | tok = end_tok + 1; |
bbc13ae3 | 9422 | *thread = strtol (tok, &tmptok, 0); |
018d34a4 VP |
9423 | if (tok == tmptok) |
9424 | error (_("Junk after thread keyword.")); | |
9425 | if (!valid_thread_id (*thread)) | |
af4908ba | 9426 | invalid_thread_id_error (*thread); |
bbc13ae3 | 9427 | tok = tmptok; |
018d34a4 | 9428 | } |
4a306c9a JB |
9429 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9430 | { | |
9431 | char *tmptok; | |
9432 | ||
9433 | tok = end_tok + 1; | |
bbc13ae3 | 9434 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
9435 | if (tok == tmptok) |
9436 | error (_("Junk after task keyword.")); | |
9437 | if (!valid_task_id (*task)) | |
b6199126 | 9438 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 9439 | tok = tmptok; |
4a306c9a | 9440 | } |
e7e0cddf SS |
9441 | else if (rest) |
9442 | { | |
9443 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9444 | return; |
e7e0cddf | 9445 | } |
018d34a4 VP |
9446 | else |
9447 | error (_("Junk at end of arguments.")); | |
9448 | } | |
9449 | } | |
9450 | ||
0fb4aa4b PA |
9451 | /* Decode a static tracepoint marker spec. */ |
9452 | ||
9453 | static struct symtabs_and_lines | |
9454 | decode_static_tracepoint_spec (char **arg_p) | |
9455 | { | |
9456 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
9457 | struct symtabs_and_lines sals; | |
0fb4aa4b PA |
9458 | struct cleanup *old_chain; |
9459 | char *p = &(*arg_p)[3]; | |
9460 | char *endp; | |
9461 | char *marker_str; | |
9462 | int i; | |
9463 | ||
e9cafbcc | 9464 | p = skip_spaces (p); |
0fb4aa4b | 9465 | |
e9cafbcc | 9466 | endp = skip_to_space (p); |
0fb4aa4b PA |
9467 | |
9468 | marker_str = savestring (p, endp - p); | |
9469 | old_chain = make_cleanup (xfree, marker_str); | |
9470 | ||
9471 | markers = target_static_tracepoint_markers_by_strid (marker_str); | |
9472 | if (VEC_empty(static_tracepoint_marker_p, markers)) | |
9473 | error (_("No known static tracepoint marker named %s"), marker_str); | |
9474 | ||
9475 | sals.nelts = VEC_length(static_tracepoint_marker_p, markers); | |
9476 | sals.sals = xmalloc (sizeof *sals.sals * sals.nelts); | |
9477 | ||
9478 | for (i = 0; i < sals.nelts; i++) | |
9479 | { | |
9480 | struct static_tracepoint_marker *marker; | |
9481 | ||
9482 | marker = VEC_index (static_tracepoint_marker_p, markers, i); | |
9483 | ||
9484 | init_sal (&sals.sals[i]); | |
9485 | ||
9486 | sals.sals[i] = find_pc_line (marker->address, 0); | |
9487 | sals.sals[i].pc = marker->address; | |
9488 | ||
9489 | release_static_tracepoint_marker (marker); | |
9490 | } | |
9491 | ||
9492 | do_cleanups (old_chain); | |
9493 | ||
9494 | *arg_p = endp; | |
9495 | return sals; | |
9496 | } | |
9497 | ||
fd9b8c24 PA |
9498 | /* Set a breakpoint. This function is shared between CLI and MI |
9499 | functions for setting a breakpoint. This function has two major | |
9500 | modes of operations, selected by the PARSE_CONDITION_AND_THREAD | |
9501 | parameter. If non-zero, the function will parse arg, extracting | |
4a64f543 MS |
9502 | breakpoint location, address and thread. Otherwise, ARG is just |
9503 | the location of breakpoint, with condition and thread specified by | |
9504 | the COND_STRING and THREAD parameters. If INTERNAL is non-zero, | |
9505 | the breakpoint number will be allocated from the internal | |
9506 | breakpoint count. Returns true if any breakpoint was created; | |
9507 | false otherwise. */ | |
0101ce28 | 9508 | |
8cdf0e15 VP |
9509 | int |
9510 | create_breakpoint (struct gdbarch *gdbarch, | |
e7e0cddf SS |
9511 | char *arg, char *cond_string, |
9512 | int thread, char *extra_string, | |
8cdf0e15 | 9513 | int parse_condition_and_thread, |
0fb4aa4b | 9514 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9515 | int ignore_count, |
9516 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9517 | const struct breakpoint_ops *ops, |
44f238bb PA |
9518 | int from_tty, int enabled, int internal, |
9519 | unsigned flags) | |
c3f6f71d | 9520 | { |
b78a6381 | 9521 | volatile struct gdb_exception e; |
f8eba3c6 | 9522 | char *copy_arg = NULL; |
c3f6f71d | 9523 | char *addr_start = arg; |
7efd8fc2 | 9524 | struct linespec_result canonical; |
c3f6f71d | 9525 | struct cleanup *old_chain; |
80c99de1 | 9526 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 9527 | int pending = 0; |
4a306c9a | 9528 | int task = 0; |
86b17b60 | 9529 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9530 | |
348d480f PA |
9531 | gdb_assert (ops != NULL); |
9532 | ||
7efd8fc2 | 9533 | init_linespec_result (&canonical); |
c3f6f71d | 9534 | |
b78a6381 TT |
9535 | TRY_CATCH (e, RETURN_MASK_ALL) |
9536 | { | |
983af33b SDJ |
9537 | ops->create_sals_from_address (&arg, &canonical, type_wanted, |
9538 | addr_start, ©_arg); | |
b78a6381 | 9539 | } |
0101ce28 JJ |
9540 | |
9541 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 9542 | switch (e.reason) |
0101ce28 | 9543 | { |
983af33b SDJ |
9544 | case GDB_NO_ERROR: |
9545 | if (VEC_empty (linespec_sals, canonical.sals)) | |
9546 | return 0; | |
9547 | break; | |
05ff989b AC |
9548 | case RETURN_ERROR: |
9549 | switch (e.error) | |
0101ce28 | 9550 | { |
05ff989b | 9551 | case NOT_FOUND_ERROR: |
0101ce28 | 9552 | |
05ff989b AC |
9553 | /* If pending breakpoint support is turned off, throw |
9554 | error. */ | |
fa8d40ab JJ |
9555 | |
9556 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
9557 | throw_exception (e); |
9558 | ||
9559 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9560 | |
05ff989b AC |
9561 | /* If pending breakpoint support is auto query and the user |
9562 | selects no, then simply return the error code. */ | |
059fb39f | 9563 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9564 | && !nquery (_("Make %s pending on future shared library load? "), |
9565 | bptype_string (type_wanted))) | |
fd9b8c24 | 9566 | return 0; |
fa8d40ab | 9567 | |
05ff989b AC |
9568 | /* At this point, either the user was queried about setting |
9569 | a pending breakpoint and selected yes, or pending | |
9570 | breakpoint behavior is on and thus a pending breakpoint | |
9571 | is defaulted on behalf of the user. */ | |
f8eba3c6 TT |
9572 | { |
9573 | struct linespec_sals lsal; | |
9574 | ||
9575 | copy_arg = xstrdup (addr_start); | |
9576 | lsal.canonical = xstrdup (copy_arg); | |
9577 | lsal.sals.nelts = 1; | |
9578 | lsal.sals.sals = XNEW (struct symtab_and_line); | |
9579 | init_sal (&lsal.sals.sals[0]); | |
9580 | pending = 1; | |
9581 | VEC_safe_push (linespec_sals, canonical.sals, &lsal); | |
9582 | } | |
05ff989b AC |
9583 | break; |
9584 | default: | |
98deb0da | 9585 | throw_exception (e); |
0101ce28 | 9586 | } |
2abae994 | 9587 | break; |
05ff989b | 9588 | default: |
983af33b | 9589 | throw_exception (e); |
0101ce28 | 9590 | } |
c3f6f71d | 9591 | |
4a64f543 | 9592 | /* Create a chain of things that always need to be cleaned up. */ |
f8eba3c6 | 9593 | old_chain = make_cleanup_destroy_linespec_result (&canonical); |
c3f6f71d | 9594 | |
c3f6f71d JM |
9595 | /* ----------------------------- SNIP ----------------------------- |
9596 | Anything added to the cleanup chain beyond this point is assumed | |
9597 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
9598 | then the memory is not reclaimed. */ |
9599 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d | 9600 | |
c3f6f71d JM |
9601 | /* Resolve all line numbers to PC's and verify that the addresses |
9602 | are ok for the target. */ | |
0101ce28 | 9603 | if (!pending) |
f8eba3c6 TT |
9604 | { |
9605 | int ix; | |
9606 | struct linespec_sals *iter; | |
9607 | ||
9608 | for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix) | |
9609 | breakpoint_sals_to_pc (&iter->sals); | |
9610 | } | |
c3f6f71d | 9611 | |
7a697b8d | 9612 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9613 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 TT |
9614 | { |
9615 | int ix; | |
9616 | struct linespec_sals *iter; | |
9617 | ||
9618 | for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix) | |
9619 | check_fast_tracepoint_sals (gdbarch, &iter->sals); | |
9620 | } | |
7a697b8d | 9621 | |
c3f6f71d JM |
9622 | /* Verify that condition can be parsed, before setting any |
9623 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9624 | breakpoint. */ |
0101ce28 | 9625 | if (!pending) |
c3f6f71d | 9626 | { |
f8eba3c6 TT |
9627 | struct linespec_sals *lsal; |
9628 | ||
9629 | lsal = VEC_index (linespec_sals, canonical.sals, 0); | |
9630 | ||
2f069f6f | 9631 | if (parse_condition_and_thread) |
72b2ff0e | 9632 | { |
e7e0cddf | 9633 | char *rest; |
72b2ff0e VP |
9634 | /* Here we only parse 'arg' to separate condition |
9635 | from thread number, so parsing in context of first | |
9636 | sal is OK. When setting the breakpoint we'll | |
9637 | re-parse it in context of each sal. */ | |
ed1d1739 | 9638 | |
f8eba3c6 | 9639 | find_condition_and_thread (arg, lsal->sals.sals[0].pc, &cond_string, |
e7e0cddf | 9640 | &thread, &task, &rest); |
72b2ff0e VP |
9641 | if (cond_string) |
9642 | make_cleanup (xfree, cond_string); | |
e7e0cddf SS |
9643 | if (rest) |
9644 | make_cleanup (xfree, rest); | |
9645 | if (rest) | |
9646 | extra_string = rest; | |
72b2ff0e | 9647 | } |
2f069f6f | 9648 | else |
72b2ff0e VP |
9649 | { |
9650 | /* Create a private copy of condition string. */ | |
9651 | if (cond_string) | |
9652 | { | |
9653 | cond_string = xstrdup (cond_string); | |
9654 | make_cleanup (xfree, cond_string); | |
9655 | } | |
e7e0cddf SS |
9656 | /* Create a private copy of any extra string. */ |
9657 | if (extra_string) | |
9658 | { | |
9659 | extra_string = xstrdup (extra_string); | |
9660 | make_cleanup (xfree, extra_string); | |
9661 | } | |
72b2ff0e | 9662 | } |
0fb4aa4b | 9663 | |
983af33b | 9664 | ops->create_breakpoints_sal (gdbarch, &canonical, lsal, |
e7e0cddf | 9665 | cond_string, extra_string, type_wanted, |
d9b3f62e PA |
9666 | tempflag ? disp_del : disp_donttouch, |
9667 | thread, task, ignore_count, ops, | |
44f238bb | 9668 | from_tty, enabled, internal, flags); |
c906108c | 9669 | } |
0101ce28 JJ |
9670 | else |
9671 | { | |
0101ce28 JJ |
9672 | struct breakpoint *b; |
9673 | ||
0101ce28 JJ |
9674 | make_cleanup (xfree, copy_arg); |
9675 | ||
bfccc43c YQ |
9676 | if (is_tracepoint_type (type_wanted)) |
9677 | { | |
9678 | struct tracepoint *t; | |
9679 | ||
9680 | t = XCNEW (struct tracepoint); | |
9681 | b = &t->base; | |
9682 | } | |
9683 | else | |
9684 | b = XNEW (struct breakpoint); | |
9685 | ||
9686 | init_raw_breakpoint_without_location (b, gdbarch, type_wanted, ops); | |
9687 | ||
f8eba3c6 | 9688 | b->addr_string = copy_arg; |
e12c7713 MK |
9689 | if (parse_condition_and_thread) |
9690 | b->cond_string = NULL; | |
9691 | else | |
9692 | { | |
9693 | /* Create a private copy of condition string. */ | |
9694 | if (cond_string) | |
9695 | { | |
9696 | cond_string = xstrdup (cond_string); | |
9697 | make_cleanup (xfree, cond_string); | |
9698 | } | |
9699 | b->cond_string = cond_string; | |
9700 | } | |
e7e0cddf | 9701 | b->extra_string = NULL; |
0101ce28 | 9702 | b->ignore_count = ignore_count; |
0101ce28 | 9703 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9704 | b->condition_not_parsed = 1; |
41447f92 | 9705 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
9706 | if ((type_wanted != bp_breakpoint |
9707 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 9708 | b->pspace = current_program_space; |
8bea4e01 | 9709 | |
bfccc43c | 9710 | install_breakpoint (internal, b, 0); |
0101ce28 JJ |
9711 | } |
9712 | ||
f8eba3c6 | 9713 | if (VEC_length (linespec_sals, canonical.sals) > 1) |
95a42b64 | 9714 | { |
3e43a32a MS |
9715 | warning (_("Multiple breakpoints were set.\nUse the " |
9716 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9717 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9718 | } |
9719 | ||
80c99de1 PA |
9720 | /* That's it. Discard the cleanups for data inserted into the |
9721 | breakpoint. */ | |
9722 | discard_cleanups (bkpt_chain); | |
9723 | /* But cleanup everything else. */ | |
c3f6f71d | 9724 | do_cleanups (old_chain); |
217dc9e2 | 9725 | |
80c99de1 | 9726 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
217dc9e2 | 9727 | update_global_location_list (1); |
fd9b8c24 PA |
9728 | |
9729 | return 1; | |
c3f6f71d | 9730 | } |
c906108c | 9731 | |
348d480f | 9732 | /* Set a breakpoint. |
72b2ff0e VP |
9733 | ARG is a string describing breakpoint address, |
9734 | condition, and thread. | |
9735 | FLAG specifies if a breakpoint is hardware on, | |
9736 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9737 | and BP_TEMPFLAG. */ | |
348d480f | 9738 | |
98deb0da | 9739 | static void |
72b2ff0e | 9740 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 9741 | { |
72b2ff0e | 9742 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9743 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9744 | ? bp_hardware_breakpoint | |
9745 | : bp_breakpoint); | |
55aa24fb SDJ |
9746 | struct breakpoint_ops *ops; |
9747 | const char *arg_cp = arg; | |
9748 | ||
9749 | /* Matching breakpoints on probes. */ | |
9750 | if (arg && probe_linespec_to_ops (&arg_cp) != NULL) | |
9751 | ops = &bkpt_probe_breakpoint_ops; | |
9752 | else | |
9753 | ops = &bkpt_breakpoint_ops; | |
c3f6f71d | 9754 | |
8cdf0e15 VP |
9755 | create_breakpoint (get_current_arch (), |
9756 | arg, | |
e7e0cddf | 9757 | NULL, 0, NULL, 1 /* parse arg */, |
0fb4aa4b | 9758 | tempflag, type_wanted, |
8cdf0e15 VP |
9759 | 0 /* Ignore count */, |
9760 | pending_break_support, | |
55aa24fb | 9761 | ops, |
8cdf0e15 | 9762 | from_tty, |
84f4c1fe | 9763 | 1 /* enabled */, |
44f238bb PA |
9764 | 0 /* internal */, |
9765 | 0); | |
c906108c SS |
9766 | } |
9767 | ||
c906108c SS |
9768 | /* Helper function for break_command_1 and disassemble_command. */ |
9769 | ||
9770 | void | |
fba45db2 | 9771 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9772 | { |
9773 | CORE_ADDR pc; | |
9774 | ||
9775 | if (sal->pc == 0 && sal->symtab != NULL) | |
9776 | { | |
9777 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9778 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9779 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9780 | sal->pc = pc; |
6a048695 | 9781 | |
4a64f543 MS |
9782 | /* If this SAL corresponds to a breakpoint inserted using a line |
9783 | number, then skip the function prologue if necessary. */ | |
6a048695 | 9784 | if (sal->explicit_line) |
059acae7 | 9785 | skip_prologue_sal (sal); |
c906108c SS |
9786 | } |
9787 | ||
9788 | if (sal->section == 0 && sal->symtab != NULL) | |
9789 | { | |
9790 | struct blockvector *bv; | |
c5aa993b JM |
9791 | struct block *b; |
9792 | struct symbol *sym; | |
c906108c | 9793 | |
801e3a5b | 9794 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
9795 | if (bv != NULL) |
9796 | { | |
7f0df278 | 9797 | sym = block_linkage_function (b); |
c906108c SS |
9798 | if (sym != NULL) |
9799 | { | |
9800 | fixup_symbol_section (sym, sal->symtab->objfile); | |
714835d5 | 9801 | sal->section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
9802 | } |
9803 | else | |
9804 | { | |
4a64f543 MS |
9805 | /* It really is worthwhile to have the section, so we'll |
9806 | just have to look harder. This case can be executed | |
9807 | if we have line numbers but no functions (as can | |
9808 | happen in assembly source). */ | |
c906108c | 9809 | |
c5aa993b | 9810 | struct minimal_symbol *msym; |
6c95b8df PA |
9811 | struct cleanup *old_chain = save_current_space_and_thread (); |
9812 | ||
9813 | switch_to_program_space_and_thread (sal->pspace); | |
c906108c SS |
9814 | |
9815 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
9816 | if (msym) | |
714835d5 | 9817 | sal->section = SYMBOL_OBJ_SECTION (msym); |
6c95b8df PA |
9818 | |
9819 | do_cleanups (old_chain); | |
c906108c SS |
9820 | } |
9821 | } | |
9822 | } | |
9823 | } | |
9824 | ||
9825 | void | |
fba45db2 | 9826 | break_command (char *arg, int from_tty) |
c906108c | 9827 | { |
db107f19 | 9828 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9829 | } |
9830 | ||
c906108c | 9831 | void |
fba45db2 | 9832 | tbreak_command (char *arg, int from_tty) |
c906108c | 9833 | { |
db107f19 | 9834 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9835 | } |
9836 | ||
c906108c | 9837 | static void |
fba45db2 | 9838 | hbreak_command (char *arg, int from_tty) |
c906108c | 9839 | { |
db107f19 | 9840 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9841 | } |
9842 | ||
9843 | static void | |
fba45db2 | 9844 | thbreak_command (char *arg, int from_tty) |
c906108c | 9845 | { |
db107f19 | 9846 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9847 | } |
9848 | ||
9849 | static void | |
fba45db2 | 9850 | stop_command (char *arg, int from_tty) |
c906108c | 9851 | { |
a3f17187 | 9852 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9853 | Usage: stop in <function | address>\n\ |
a3f17187 | 9854 | stop at <line>\n")); |
c906108c SS |
9855 | } |
9856 | ||
9857 | static void | |
fba45db2 | 9858 | stopin_command (char *arg, int from_tty) |
c906108c SS |
9859 | { |
9860 | int badInput = 0; | |
9861 | ||
c5aa993b | 9862 | if (arg == (char *) NULL) |
c906108c SS |
9863 | badInput = 1; |
9864 | else if (*arg != '*') | |
9865 | { | |
9866 | char *argptr = arg; | |
9867 | int hasColon = 0; | |
9868 | ||
4a64f543 | 9869 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 9870 | say it is bad, otherwise, it should be an address or |
4a64f543 | 9871 | function/method name. */ |
c906108c | 9872 | while (*argptr && !hasColon) |
c5aa993b JM |
9873 | { |
9874 | hasColon = (*argptr == ':'); | |
9875 | argptr++; | |
9876 | } | |
c906108c SS |
9877 | |
9878 | if (hasColon) | |
c5aa993b | 9879 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9880 | else |
c5aa993b | 9881 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9882 | } |
9883 | ||
9884 | if (badInput) | |
a3f17187 | 9885 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9886 | else |
db107f19 | 9887 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9888 | } |
9889 | ||
9890 | static void | |
fba45db2 | 9891 | stopat_command (char *arg, int from_tty) |
c906108c SS |
9892 | { |
9893 | int badInput = 0; | |
9894 | ||
c5aa993b | 9895 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
9896 | badInput = 1; |
9897 | else | |
9898 | { | |
9899 | char *argptr = arg; | |
9900 | int hasColon = 0; | |
9901 | ||
4a64f543 MS |
9902 | /* Look for a ':'. If there is a '::' then get out, otherwise |
9903 | it is probably a line number. */ | |
c906108c | 9904 | while (*argptr && !hasColon) |
c5aa993b JM |
9905 | { |
9906 | hasColon = (*argptr == ':'); | |
9907 | argptr++; | |
9908 | } | |
c906108c SS |
9909 | |
9910 | if (hasColon) | |
c5aa993b | 9911 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 9912 | else |
c5aa993b | 9913 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
9914 | } |
9915 | ||
9916 | if (badInput) | |
a3f17187 | 9917 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 9918 | else |
db107f19 | 9919 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9920 | } |
9921 | ||
e7e0cddf SS |
9922 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9923 | with a prewired command list consisting of a single output command, | |
9924 | built from extra arguments supplied on the dprintf command | |
9925 | line. */ | |
9926 | ||
da821c7b | 9927 | static void |
e7e0cddf SS |
9928 | dprintf_command (char *arg, int from_tty) |
9929 | { | |
9930 | create_breakpoint (get_current_arch (), | |
9931 | arg, | |
9932 | NULL, 0, NULL, 1 /* parse arg */, | |
9933 | 0, bp_dprintf, | |
9934 | 0 /* Ignore count */, | |
9935 | pending_break_support, | |
9936 | &dprintf_breakpoint_ops, | |
9937 | from_tty, | |
9938 | 1 /* enabled */, | |
9939 | 0 /* internal */, | |
9940 | 0); | |
9941 | } | |
9942 | ||
d3ce09f5 SS |
9943 | static void |
9944 | agent_printf_command (char *arg, int from_tty) | |
9945 | { | |
9946 | error (_("May only run agent-printf on the target")); | |
9947 | } | |
9948 | ||
f1310107 TJB |
9949 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
9950 | ranged breakpoints. */ | |
9951 | ||
9952 | static int | |
9953 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
9954 | struct address_space *aspace, | |
09ac7c10 TT |
9955 | CORE_ADDR bp_addr, |
9956 | const struct target_waitstatus *ws) | |
f1310107 | 9957 | { |
09ac7c10 | 9958 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 9959 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
9960 | return 0; |
9961 | ||
f1310107 TJB |
9962 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9963 | bl->length, aspace, bp_addr); | |
9964 | } | |
9965 | ||
9966 | /* Implement the "resources_needed" breakpoint_ops method for | |
9967 | ranged breakpoints. */ | |
9968 | ||
9969 | static int | |
9970 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
9971 | { | |
9972 | return target_ranged_break_num_registers (); | |
9973 | } | |
9974 | ||
9975 | /* Implement the "print_it" breakpoint_ops method for | |
9976 | ranged breakpoints. */ | |
9977 | ||
9978 | static enum print_stop_action | |
348d480f | 9979 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 9980 | { |
348d480f | 9981 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 9982 | struct bp_location *bl = b->loc; |
79a45e25 | 9983 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9984 | |
9985 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9986 | ||
9987 | /* Ranged breakpoints have only one location. */ | |
9988 | gdb_assert (bl && bl->next == NULL); | |
9989 | ||
9990 | annotate_breakpoint (b->number); | |
9991 | if (b->disposition == disp_del) | |
9992 | ui_out_text (uiout, "\nTemporary ranged breakpoint "); | |
9993 | else | |
9994 | ui_out_text (uiout, "\nRanged breakpoint "); | |
9995 | if (ui_out_is_mi_like_p (uiout)) | |
9996 | { | |
9997 | ui_out_field_string (uiout, "reason", | |
9998 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
9999 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
10000 | } | |
10001 | ui_out_field_int (uiout, "bkptno", b->number); | |
10002 | ui_out_text (uiout, ", "); | |
10003 | ||
10004 | return PRINT_SRC_AND_LOC; | |
10005 | } | |
10006 | ||
10007 | /* Implement the "print_one" breakpoint_ops method for | |
10008 | ranged breakpoints. */ | |
10009 | ||
10010 | static void | |
10011 | print_one_ranged_breakpoint (struct breakpoint *b, | |
10012 | struct bp_location **last_loc) | |
10013 | { | |
10014 | struct bp_location *bl = b->loc; | |
10015 | struct value_print_options opts; | |
79a45e25 | 10016 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
10017 | |
10018 | /* Ranged breakpoints have only one location. */ | |
10019 | gdb_assert (bl && bl->next == NULL); | |
10020 | ||
10021 | get_user_print_options (&opts); | |
10022 | ||
10023 | if (opts.addressprint) | |
10024 | /* We don't print the address range here, it will be printed later | |
10025 | by print_one_detail_ranged_breakpoint. */ | |
10026 | ui_out_field_skip (uiout, "addr"); | |
10027 | annotate_field (5); | |
10028 | print_breakpoint_location (b, bl); | |
10029 | *last_loc = bl; | |
10030 | } | |
10031 | ||
10032 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10033 | ranged breakpoints. */ | |
10034 | ||
10035 | static void | |
10036 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
10037 | struct ui_out *uiout) | |
10038 | { | |
10039 | CORE_ADDR address_start, address_end; | |
10040 | struct bp_location *bl = b->loc; | |
f99d8bf4 PA |
10041 | struct ui_file *stb = mem_fileopen (); |
10042 | struct cleanup *cleanup = make_cleanup_ui_file_delete (stb); | |
f1310107 TJB |
10043 | |
10044 | gdb_assert (bl); | |
10045 | ||
10046 | address_start = bl->address; | |
10047 | address_end = address_start + bl->length - 1; | |
10048 | ||
10049 | ui_out_text (uiout, "\taddress range: "); | |
f99d8bf4 | 10050 | fprintf_unfiltered (stb, "[%s, %s]", |
f1310107 TJB |
10051 | print_core_address (bl->gdbarch, address_start), |
10052 | print_core_address (bl->gdbarch, address_end)); | |
10053 | ui_out_field_stream (uiout, "addr", stb); | |
10054 | ui_out_text (uiout, "\n"); | |
10055 | ||
10056 | do_cleanups (cleanup); | |
10057 | } | |
10058 | ||
10059 | /* Implement the "print_mention" breakpoint_ops method for | |
10060 | ranged breakpoints. */ | |
10061 | ||
10062 | static void | |
10063 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
10064 | { | |
10065 | struct bp_location *bl = b->loc; | |
79a45e25 | 10066 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
10067 | |
10068 | gdb_assert (bl); | |
10069 | gdb_assert (b->type == bp_hardware_breakpoint); | |
10070 | ||
10071 | if (ui_out_is_mi_like_p (uiout)) | |
10072 | return; | |
10073 | ||
10074 | printf_filtered (_("Hardware assisted ranged breakpoint %d from %s to %s."), | |
10075 | b->number, paddress (bl->gdbarch, bl->address), | |
10076 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
10077 | } | |
10078 | ||
10079 | /* Implement the "print_recreate" breakpoint_ops method for | |
10080 | ranged breakpoints. */ | |
10081 | ||
10082 | static void | |
10083 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
10084 | { | |
10085 | fprintf_unfiltered (fp, "break-range %s, %s", b->addr_string, | |
10086 | b->addr_string_range_end); | |
d9b3f62e | 10087 | print_recreate_thread (b, fp); |
f1310107 TJB |
10088 | } |
10089 | ||
10090 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
10091 | ||
2060206e | 10092 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
10093 | |
10094 | /* Find the address where the end of the breakpoint range should be | |
10095 | placed, given the SAL of the end of the range. This is so that if | |
10096 | the user provides a line number, the end of the range is set to the | |
10097 | last instruction of the given line. */ | |
10098 | ||
10099 | static CORE_ADDR | |
10100 | find_breakpoint_range_end (struct symtab_and_line sal) | |
10101 | { | |
10102 | CORE_ADDR end; | |
10103 | ||
10104 | /* If the user provided a PC value, use it. Otherwise, | |
10105 | find the address of the end of the given location. */ | |
10106 | if (sal.explicit_pc) | |
10107 | end = sal.pc; | |
10108 | else | |
10109 | { | |
10110 | int ret; | |
10111 | CORE_ADDR start; | |
10112 | ||
10113 | ret = find_line_pc_range (sal, &start, &end); | |
10114 | if (!ret) | |
10115 | error (_("Could not find location of the end of the range.")); | |
10116 | ||
10117 | /* find_line_pc_range returns the start of the next line. */ | |
10118 | end--; | |
10119 | } | |
10120 | ||
10121 | return end; | |
10122 | } | |
10123 | ||
10124 | /* Implement the "break-range" CLI command. */ | |
10125 | ||
10126 | static void | |
10127 | break_range_command (char *arg, int from_tty) | |
10128 | { | |
10129 | char *arg_start, *addr_string_start, *addr_string_end; | |
10130 | struct linespec_result canonical_start, canonical_end; | |
10131 | int bp_count, can_use_bp, length; | |
10132 | CORE_ADDR end; | |
10133 | struct breakpoint *b; | |
10134 | struct symtab_and_line sal_start, sal_end; | |
f1310107 | 10135 | struct cleanup *cleanup_bkpt; |
f8eba3c6 | 10136 | struct linespec_sals *lsal_start, *lsal_end; |
f1310107 TJB |
10137 | |
10138 | /* We don't support software ranged breakpoints. */ | |
10139 | if (target_ranged_break_num_registers () < 0) | |
10140 | error (_("This target does not support hardware ranged breakpoints.")); | |
10141 | ||
10142 | bp_count = hw_breakpoint_used_count (); | |
10143 | bp_count += target_ranged_break_num_registers (); | |
10144 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
10145 | bp_count, 0); | |
10146 | if (can_use_bp < 0) | |
10147 | error (_("Hardware breakpoints used exceeds limit.")); | |
10148 | ||
f8eba3c6 | 10149 | arg = skip_spaces (arg); |
f1310107 TJB |
10150 | if (arg == NULL || arg[0] == '\0') |
10151 | error(_("No address range specified.")); | |
10152 | ||
f1310107 TJB |
10153 | init_linespec_result (&canonical_start); |
10154 | ||
f8eba3c6 TT |
10155 | arg_start = arg; |
10156 | parse_breakpoint_sals (&arg, &canonical_start); | |
f1310107 | 10157 | |
f8eba3c6 | 10158 | cleanup_bkpt = make_cleanup_destroy_linespec_result (&canonical_start); |
f1310107 TJB |
10159 | |
10160 | if (arg[0] != ',') | |
10161 | error (_("Too few arguments.")); | |
f8eba3c6 | 10162 | else if (VEC_empty (linespec_sals, canonical_start.sals)) |
f1310107 | 10163 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 TT |
10164 | |
10165 | lsal_start = VEC_index (linespec_sals, canonical_start.sals, 0); | |
10166 | ||
10167 | if (VEC_length (linespec_sals, canonical_start.sals) > 1 | |
10168 | || lsal_start->sals.nelts != 1) | |
f1310107 TJB |
10169 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10170 | ||
f8eba3c6 TT |
10171 | sal_start = lsal_start->sals.sals[0]; |
10172 | addr_string_start = savestring (arg_start, arg - arg_start); | |
10173 | make_cleanup (xfree, addr_string_start); | |
f1310107 TJB |
10174 | |
10175 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 10176 | arg = skip_spaces (arg); |
f1310107 TJB |
10177 | |
10178 | /* Parse the end location. */ | |
10179 | ||
f1310107 TJB |
10180 | init_linespec_result (&canonical_end); |
10181 | arg_start = arg; | |
10182 | ||
f8eba3c6 | 10183 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
10184 | parse_breakpoint_sals because we need to specify the start location's |
10185 | symtab and line as the default symtab and line for the end of the | |
10186 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
10187 | where +14 means 14 lines from the start location. */ | |
f8eba3c6 TT |
10188 | decode_line_full (&arg, DECODE_LINE_FUNFIRSTLINE, |
10189 | sal_start.symtab, sal_start.line, | |
10190 | &canonical_end, NULL, NULL); | |
10191 | ||
10192 | make_cleanup_destroy_linespec_result (&canonical_end); | |
f1310107 | 10193 | |
f8eba3c6 | 10194 | if (VEC_empty (linespec_sals, canonical_end.sals)) |
f1310107 | 10195 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 TT |
10196 | |
10197 | lsal_end = VEC_index (linespec_sals, canonical_end.sals, 0); | |
10198 | if (VEC_length (linespec_sals, canonical_end.sals) > 1 | |
10199 | || lsal_end->sals.nelts != 1) | |
f1310107 TJB |
10200 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10201 | ||
f8eba3c6 TT |
10202 | sal_end = lsal_end->sals.sals[0]; |
10203 | addr_string_end = savestring (arg_start, arg - arg_start); | |
10204 | make_cleanup (xfree, addr_string_end); | |
f1310107 TJB |
10205 | |
10206 | end = find_breakpoint_range_end (sal_end); | |
10207 | if (sal_start.pc > end) | |
177b42fe | 10208 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
10209 | |
10210 | length = end - sal_start.pc + 1; | |
10211 | if (length < 0) | |
10212 | /* Length overflowed. */ | |
10213 | error (_("Address range too large.")); | |
10214 | else if (length == 1) | |
10215 | { | |
10216 | /* This range is simple enough to be handled by | |
10217 | the `hbreak' command. */ | |
10218 | hbreak_command (addr_string_start, 1); | |
10219 | ||
10220 | do_cleanups (cleanup_bkpt); | |
10221 | ||
10222 | return; | |
10223 | } | |
10224 | ||
10225 | /* Now set up the breakpoint. */ | |
10226 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 10227 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
10228 | set_breakpoint_count (breakpoint_count + 1); |
10229 | b->number = breakpoint_count; | |
10230 | b->disposition = disp_donttouch; | |
f8eba3c6 TT |
10231 | b->addr_string = xstrdup (addr_string_start); |
10232 | b->addr_string_range_end = xstrdup (addr_string_end); | |
f1310107 TJB |
10233 | b->loc->length = length; |
10234 | ||
f8eba3c6 | 10235 | do_cleanups (cleanup_bkpt); |
f1310107 TJB |
10236 | |
10237 | mention (b); | |
8d3788bd | 10238 | observer_notify_breakpoint_created (b); |
f1310107 TJB |
10239 | update_global_location_list (1); |
10240 | } | |
10241 | ||
4a64f543 MS |
10242 | /* Return non-zero if EXP is verified as constant. Returned zero |
10243 | means EXP is variable. Also the constant detection may fail for | |
10244 | some constant expressions and in such case still falsely return | |
10245 | zero. */ | |
2e6e3d9c | 10246 | |
65d79d4b SDJ |
10247 | static int |
10248 | watchpoint_exp_is_const (const struct expression *exp) | |
10249 | { | |
10250 | int i = exp->nelts; | |
10251 | ||
10252 | while (i > 0) | |
10253 | { | |
10254 | int oplenp, argsp; | |
10255 | ||
10256 | /* We are only interested in the descriptor of each element. */ | |
10257 | operator_length (exp, i, &oplenp, &argsp); | |
10258 | i -= oplenp; | |
10259 | ||
10260 | switch (exp->elts[i].opcode) | |
10261 | { | |
10262 | case BINOP_ADD: | |
10263 | case BINOP_SUB: | |
10264 | case BINOP_MUL: | |
10265 | case BINOP_DIV: | |
10266 | case BINOP_REM: | |
10267 | case BINOP_MOD: | |
10268 | case BINOP_LSH: | |
10269 | case BINOP_RSH: | |
10270 | case BINOP_LOGICAL_AND: | |
10271 | case BINOP_LOGICAL_OR: | |
10272 | case BINOP_BITWISE_AND: | |
10273 | case BINOP_BITWISE_IOR: | |
10274 | case BINOP_BITWISE_XOR: | |
10275 | case BINOP_EQUAL: | |
10276 | case BINOP_NOTEQUAL: | |
10277 | case BINOP_LESS: | |
10278 | case BINOP_GTR: | |
10279 | case BINOP_LEQ: | |
10280 | case BINOP_GEQ: | |
10281 | case BINOP_REPEAT: | |
10282 | case BINOP_COMMA: | |
10283 | case BINOP_EXP: | |
10284 | case BINOP_MIN: | |
10285 | case BINOP_MAX: | |
10286 | case BINOP_INTDIV: | |
10287 | case BINOP_CONCAT: | |
10288 | case BINOP_IN: | |
10289 | case BINOP_RANGE: | |
10290 | case TERNOP_COND: | |
10291 | case TERNOP_SLICE: | |
65d79d4b SDJ |
10292 | |
10293 | case OP_LONG: | |
10294 | case OP_DOUBLE: | |
10295 | case OP_DECFLOAT: | |
10296 | case OP_LAST: | |
10297 | case OP_COMPLEX: | |
10298 | case OP_STRING: | |
65d79d4b SDJ |
10299 | case OP_ARRAY: |
10300 | case OP_TYPE: | |
608b4967 TT |
10301 | case OP_TYPEOF: |
10302 | case OP_DECLTYPE: | |
65d79d4b SDJ |
10303 | case OP_NAME: |
10304 | case OP_OBJC_NSSTRING: | |
10305 | ||
10306 | case UNOP_NEG: | |
10307 | case UNOP_LOGICAL_NOT: | |
10308 | case UNOP_COMPLEMENT: | |
10309 | case UNOP_ADDR: | |
10310 | case UNOP_HIGH: | |
aeaa2474 | 10311 | case UNOP_CAST: |
9eaf6705 TT |
10312 | |
10313 | case UNOP_CAST_TYPE: | |
10314 | case UNOP_REINTERPRET_CAST: | |
10315 | case UNOP_DYNAMIC_CAST: | |
4a64f543 MS |
10316 | /* Unary, binary and ternary operators: We have to check |
10317 | their operands. If they are constant, then so is the | |
10318 | result of that operation. For instance, if A and B are | |
10319 | determined to be constants, then so is "A + B". | |
10320 | ||
10321 | UNOP_IND is one exception to the rule above, because the | |
10322 | value of *ADDR is not necessarily a constant, even when | |
10323 | ADDR is. */ | |
65d79d4b SDJ |
10324 | break; |
10325 | ||
10326 | case OP_VAR_VALUE: | |
10327 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 10328 | |
65d79d4b | 10329 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
10330 | possible that a buggy compiler could mark a variable as |
10331 | constant even when it is not, and TYPE_CONST would return | |
10332 | true in this case, while SYMBOL_CLASS wouldn't. | |
10333 | ||
10334 | We also have to check for function symbols because they | |
10335 | are always constant. */ | |
65d79d4b SDJ |
10336 | { |
10337 | struct symbol *s = exp->elts[i + 2].symbol; | |
10338 | ||
10339 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
10340 | && SYMBOL_CLASS (s) != LOC_CONST | |
10341 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
10342 | return 0; | |
10343 | break; | |
10344 | } | |
10345 | ||
10346 | /* The default action is to return 0 because we are using | |
10347 | the optimistic approach here: If we don't know something, | |
10348 | then it is not a constant. */ | |
10349 | default: | |
10350 | return 0; | |
10351 | } | |
10352 | } | |
10353 | ||
10354 | return 1; | |
10355 | } | |
10356 | ||
3a5c3e22 PA |
10357 | /* Implement the "dtor" breakpoint_ops method for watchpoints. */ |
10358 | ||
10359 | static void | |
10360 | dtor_watchpoint (struct breakpoint *self) | |
10361 | { | |
10362 | struct watchpoint *w = (struct watchpoint *) self; | |
10363 | ||
10364 | xfree (w->cond_exp); | |
10365 | xfree (w->exp); | |
10366 | xfree (w->exp_string); | |
10367 | xfree (w->exp_string_reparse); | |
10368 | value_free (w->val); | |
10369 | ||
10370 | base_breakpoint_ops.dtor (self); | |
10371 | } | |
10372 | ||
348d480f PA |
10373 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
10374 | ||
10375 | static void | |
10376 | re_set_watchpoint (struct breakpoint *b) | |
10377 | { | |
3a5c3e22 PA |
10378 | struct watchpoint *w = (struct watchpoint *) b; |
10379 | ||
348d480f PA |
10380 | /* Watchpoint can be either on expression using entirely global |
10381 | variables, or it can be on local variables. | |
10382 | ||
10383 | Watchpoints of the first kind are never auto-deleted, and even | |
10384 | persist across program restarts. Since they can use variables | |
10385 | from shared libraries, we need to reparse expression as libraries | |
10386 | are loaded and unloaded. | |
10387 | ||
10388 | Watchpoints on local variables can also change meaning as result | |
10389 | of solib event. For example, if a watchpoint uses both a local | |
10390 | and a global variables in expression, it's a local watchpoint, | |
10391 | but unloading of a shared library will make the expression | |
10392 | invalid. This is not a very common use case, but we still | |
10393 | re-evaluate expression, to avoid surprises to the user. | |
10394 | ||
10395 | Note that for local watchpoints, we re-evaluate it only if | |
10396 | watchpoints frame id is still valid. If it's not, it means the | |
10397 | watchpoint is out of scope and will be deleted soon. In fact, | |
10398 | I'm not sure we'll ever be called in this case. | |
10399 | ||
10400 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10401 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10402 | |
3a5c3e22 PA |
10403 | Don't do anything about disabled watchpoints, since they will be |
10404 | reevaluated again when enabled. */ | |
10405 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10406 | } |
10407 | ||
77b06cd7 TJB |
10408 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10409 | ||
10410 | static int | |
10411 | insert_watchpoint (struct bp_location *bl) | |
10412 | { | |
3a5c3e22 PA |
10413 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10414 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10415 | |
10416 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 10417 | w->cond_exp); |
77b06cd7 TJB |
10418 | } |
10419 | ||
10420 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10421 | ||
10422 | static int | |
10423 | remove_watchpoint (struct bp_location *bl) | |
10424 | { | |
3a5c3e22 PA |
10425 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10426 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10427 | |
10428 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 10429 | w->cond_exp); |
e09342b5 TJB |
10430 | } |
10431 | ||
e09342b5 | 10432 | static int |
348d480f | 10433 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
09ac7c10 TT |
10434 | struct address_space *aspace, CORE_ADDR bp_addr, |
10435 | const struct target_waitstatus *ws) | |
e09342b5 | 10436 | { |
348d480f | 10437 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10438 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10439 | |
348d480f PA |
10440 | /* Continuable hardware watchpoints are treated as non-existent if the |
10441 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10442 | some data address). Otherwise gdb won't stop on a break instruction | |
10443 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10444 | been defined. Also skip watchpoints which we know did not trigger | |
10445 | (did not match the data address). */ | |
10446 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10447 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10448 | return 0; |
9c06b0b4 | 10449 | |
348d480f | 10450 | return 1; |
9c06b0b4 TJB |
10451 | } |
10452 | ||
348d480f PA |
10453 | static void |
10454 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10455 | { |
348d480f | 10456 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10457 | |
348d480f | 10458 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10459 | } |
10460 | ||
10461 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10462 | hardware watchpoints. */ |
9c06b0b4 TJB |
10463 | |
10464 | static int | |
348d480f | 10465 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10466 | { |
3a5c3e22 PA |
10467 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10468 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10469 | |
10470 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10471 | } |
10472 | ||
10473 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10474 | hardware watchpoints. */ |
9c06b0b4 TJB |
10475 | |
10476 | static int | |
348d480f | 10477 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10478 | { |
efa80663 PA |
10479 | /* Read and access watchpoints only work with hardware support. */ |
10480 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10481 | } |
10482 | ||
9c06b0b4 | 10483 | static enum print_stop_action |
348d480f | 10484 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10485 | { |
348d480f PA |
10486 | struct cleanup *old_chain; |
10487 | struct breakpoint *b; | |
10488 | const struct bp_location *bl; | |
f99d8bf4 | 10489 | struct ui_file *stb; |
348d480f | 10490 | enum print_stop_action result; |
3a5c3e22 | 10491 | struct watchpoint *w; |
79a45e25 | 10492 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10493 | |
10494 | gdb_assert (bs->bp_location_at != NULL); | |
10495 | ||
10496 | bl = bs->bp_location_at; | |
10497 | b = bs->breakpoint_at; | |
3a5c3e22 | 10498 | w = (struct watchpoint *) b; |
348d480f | 10499 | |
f99d8bf4 PA |
10500 | stb = mem_fileopen (); |
10501 | old_chain = make_cleanup_ui_file_delete (stb); | |
9c06b0b4 TJB |
10502 | |
10503 | switch (b->type) | |
10504 | { | |
348d480f | 10505 | case bp_watchpoint: |
9c06b0b4 TJB |
10506 | case bp_hardware_watchpoint: |
10507 | annotate_watchpoint (b->number); | |
10508 | if (ui_out_is_mi_like_p (uiout)) | |
10509 | ui_out_field_string | |
10510 | (uiout, "reason", | |
10511 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10512 | mention (b); |
10513 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10514 | ui_out_text (uiout, "\nOld value = "); | |
f99d8bf4 | 10515 | watchpoint_value_print (bs->old_val, stb); |
348d480f PA |
10516 | ui_out_field_stream (uiout, "old", stb); |
10517 | ui_out_text (uiout, "\nNew value = "); | |
f99d8bf4 | 10518 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10519 | ui_out_field_stream (uiout, "new", stb); |
10520 | ui_out_text (uiout, "\n"); | |
10521 | /* More than one watchpoint may have been triggered. */ | |
10522 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10523 | break; |
10524 | ||
10525 | case bp_read_watchpoint: | |
10526 | if (ui_out_is_mi_like_p (uiout)) | |
10527 | ui_out_field_string | |
10528 | (uiout, "reason", | |
10529 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10530 | mention (b); |
10531 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10532 | ui_out_text (uiout, "\nValue = "); | |
f99d8bf4 | 10533 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10534 | ui_out_field_stream (uiout, "value", stb); |
10535 | ui_out_text (uiout, "\n"); | |
10536 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10537 | break; |
10538 | ||
10539 | case bp_access_watchpoint: | |
348d480f PA |
10540 | if (bs->old_val != NULL) |
10541 | { | |
10542 | annotate_watchpoint (b->number); | |
10543 | if (ui_out_is_mi_like_p (uiout)) | |
10544 | ui_out_field_string | |
10545 | (uiout, "reason", | |
10546 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10547 | mention (b); | |
10548 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10549 | ui_out_text (uiout, "\nOld value = "); | |
f99d8bf4 | 10550 | watchpoint_value_print (bs->old_val, stb); |
348d480f PA |
10551 | ui_out_field_stream (uiout, "old", stb); |
10552 | ui_out_text (uiout, "\nNew value = "); | |
10553 | } | |
10554 | else | |
10555 | { | |
10556 | mention (b); | |
10557 | if (ui_out_is_mi_like_p (uiout)) | |
10558 | ui_out_field_string | |
10559 | (uiout, "reason", | |
10560 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10561 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10562 | ui_out_text (uiout, "\nValue = "); | |
10563 | } | |
f99d8bf4 | 10564 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10565 | ui_out_field_stream (uiout, "new", stb); |
10566 | ui_out_text (uiout, "\n"); | |
10567 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10568 | break; |
10569 | default: | |
348d480f | 10570 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10571 | } |
10572 | ||
348d480f PA |
10573 | do_cleanups (old_chain); |
10574 | return result; | |
10575 | } | |
10576 | ||
10577 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10578 | watchpoints. */ | |
10579 | ||
10580 | static void | |
10581 | print_mention_watchpoint (struct breakpoint *b) | |
10582 | { | |
10583 | struct cleanup *ui_out_chain; | |
3a5c3e22 | 10584 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10585 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10586 | |
10587 | switch (b->type) | |
10588 | { | |
10589 | case bp_watchpoint: | |
10590 | ui_out_text (uiout, "Watchpoint "); | |
10591 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10592 | break; | |
10593 | case bp_hardware_watchpoint: | |
10594 | ui_out_text (uiout, "Hardware watchpoint "); | |
10595 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10596 | break; | |
10597 | case bp_read_watchpoint: | |
10598 | ui_out_text (uiout, "Hardware read watchpoint "); | |
10599 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
10600 | break; | |
10601 | case bp_access_watchpoint: | |
10602 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
10603 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
10604 | break; | |
10605 | default: | |
10606 | internal_error (__FILE__, __LINE__, | |
10607 | _("Invalid hardware watchpoint type.")); | |
10608 | } | |
10609 | ||
10610 | ui_out_field_int (uiout, "number", b->number); | |
10611 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 10612 | ui_out_field_string (uiout, "exp", w->exp_string); |
348d480f PA |
10613 | do_cleanups (ui_out_chain); |
10614 | } | |
10615 | ||
10616 | /* Implement the "print_recreate" breakpoint_ops method for | |
10617 | watchpoints. */ | |
10618 | ||
10619 | static void | |
10620 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10621 | { | |
3a5c3e22 PA |
10622 | struct watchpoint *w = (struct watchpoint *) b; |
10623 | ||
348d480f PA |
10624 | switch (b->type) |
10625 | { | |
10626 | case bp_watchpoint: | |
10627 | case bp_hardware_watchpoint: | |
10628 | fprintf_unfiltered (fp, "watch"); | |
10629 | break; | |
10630 | case bp_read_watchpoint: | |
10631 | fprintf_unfiltered (fp, "rwatch"); | |
10632 | break; | |
10633 | case bp_access_watchpoint: | |
10634 | fprintf_unfiltered (fp, "awatch"); | |
10635 | break; | |
10636 | default: | |
10637 | internal_error (__FILE__, __LINE__, | |
10638 | _("Invalid watchpoint type.")); | |
10639 | } | |
10640 | ||
3a5c3e22 | 10641 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10642 | print_recreate_thread (b, fp); |
348d480f PA |
10643 | } |
10644 | ||
10645 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ | |
10646 | ||
2060206e | 10647 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10648 | |
10649 | /* Implement the "insert" breakpoint_ops method for | |
10650 | masked hardware watchpoints. */ | |
10651 | ||
10652 | static int | |
10653 | insert_masked_watchpoint (struct bp_location *bl) | |
10654 | { | |
3a5c3e22 PA |
10655 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10656 | ||
10657 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10658 | bl->watchpoint_type); |
10659 | } | |
10660 | ||
10661 | /* Implement the "remove" breakpoint_ops method for | |
10662 | masked hardware watchpoints. */ | |
10663 | ||
10664 | static int | |
10665 | remove_masked_watchpoint (struct bp_location *bl) | |
10666 | { | |
3a5c3e22 PA |
10667 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10668 | ||
10669 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10670 | bl->watchpoint_type); |
10671 | } | |
10672 | ||
10673 | /* Implement the "resources_needed" breakpoint_ops method for | |
10674 | masked hardware watchpoints. */ | |
10675 | ||
10676 | static int | |
10677 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10678 | { | |
3a5c3e22 PA |
10679 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10680 | ||
10681 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10682 | } |
10683 | ||
10684 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10685 | masked hardware watchpoints. */ | |
10686 | ||
10687 | static int | |
10688 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10689 | { | |
10690 | return 0; | |
10691 | } | |
10692 | ||
10693 | /* Implement the "print_it" breakpoint_ops method for | |
10694 | masked hardware watchpoints. */ | |
10695 | ||
10696 | static enum print_stop_action | |
10697 | print_it_masked_watchpoint (bpstat bs) | |
10698 | { | |
10699 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10700 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10701 | |
10702 | /* Masked watchpoints have only one location. */ | |
10703 | gdb_assert (b->loc && b->loc->next == NULL); | |
10704 | ||
10705 | switch (b->type) | |
10706 | { | |
10707 | case bp_hardware_watchpoint: | |
10708 | annotate_watchpoint (b->number); | |
10709 | if (ui_out_is_mi_like_p (uiout)) | |
10710 | ui_out_field_string | |
10711 | (uiout, "reason", | |
10712 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
10713 | break; | |
10714 | ||
10715 | case bp_read_watchpoint: | |
10716 | if (ui_out_is_mi_like_p (uiout)) | |
10717 | ui_out_field_string | |
10718 | (uiout, "reason", | |
10719 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
10720 | break; | |
10721 | ||
10722 | case bp_access_watchpoint: | |
10723 | if (ui_out_is_mi_like_p (uiout)) | |
10724 | ui_out_field_string | |
10725 | (uiout, "reason", | |
10726 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10727 | break; | |
10728 | default: | |
10729 | internal_error (__FILE__, __LINE__, | |
10730 | _("Invalid hardware watchpoint type.")); | |
10731 | } | |
10732 | ||
10733 | mention (b); | |
9c06b0b4 TJB |
10734 | ui_out_text (uiout, _("\n\ |
10735 | Check the underlying instruction at PC for the memory\n\ | |
10736 | address and value which triggered this watchpoint.\n")); | |
10737 | ui_out_text (uiout, "\n"); | |
10738 | ||
10739 | /* More than one watchpoint may have been triggered. */ | |
10740 | return PRINT_UNKNOWN; | |
10741 | } | |
10742 | ||
10743 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10744 | masked hardware watchpoints. */ | |
10745 | ||
10746 | static void | |
10747 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10748 | struct ui_out *uiout) | |
10749 | { | |
3a5c3e22 PA |
10750 | struct watchpoint *w = (struct watchpoint *) b; |
10751 | ||
9c06b0b4 TJB |
10752 | /* Masked watchpoints have only one location. */ |
10753 | gdb_assert (b->loc && b->loc->next == NULL); | |
10754 | ||
10755 | ui_out_text (uiout, "\tmask "); | |
3a5c3e22 | 10756 | ui_out_field_core_addr (uiout, "mask", b->loc->gdbarch, w->hw_wp_mask); |
9c06b0b4 TJB |
10757 | ui_out_text (uiout, "\n"); |
10758 | } | |
10759 | ||
10760 | /* Implement the "print_mention" breakpoint_ops method for | |
10761 | masked hardware watchpoints. */ | |
10762 | ||
10763 | static void | |
10764 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10765 | { | |
3a5c3e22 | 10766 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10767 | struct ui_out *uiout = current_uiout; |
9c06b0b4 TJB |
10768 | struct cleanup *ui_out_chain; |
10769 | ||
10770 | switch (b->type) | |
10771 | { | |
10772 | case bp_hardware_watchpoint: | |
10773 | ui_out_text (uiout, "Masked hardware watchpoint "); | |
10774 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10775 | break; | |
10776 | case bp_read_watchpoint: | |
10777 | ui_out_text (uiout, "Masked hardware read watchpoint "); | |
10778 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
10779 | break; | |
10780 | case bp_access_watchpoint: | |
10781 | ui_out_text (uiout, "Masked hardware access (read/write) watchpoint "); | |
10782 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
10783 | break; | |
10784 | default: | |
10785 | internal_error (__FILE__, __LINE__, | |
10786 | _("Invalid hardware watchpoint type.")); | |
10787 | } | |
10788 | ||
10789 | ui_out_field_int (uiout, "number", b->number); | |
10790 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 10791 | ui_out_field_string (uiout, "exp", w->exp_string); |
9c06b0b4 TJB |
10792 | do_cleanups (ui_out_chain); |
10793 | } | |
10794 | ||
10795 | /* Implement the "print_recreate" breakpoint_ops method for | |
10796 | masked hardware watchpoints. */ | |
10797 | ||
10798 | static void | |
10799 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10800 | { | |
3a5c3e22 | 10801 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10802 | char tmp[40]; |
10803 | ||
10804 | switch (b->type) | |
10805 | { | |
10806 | case bp_hardware_watchpoint: | |
10807 | fprintf_unfiltered (fp, "watch"); | |
10808 | break; | |
10809 | case bp_read_watchpoint: | |
10810 | fprintf_unfiltered (fp, "rwatch"); | |
10811 | break; | |
10812 | case bp_access_watchpoint: | |
10813 | fprintf_unfiltered (fp, "awatch"); | |
10814 | break; | |
10815 | default: | |
10816 | internal_error (__FILE__, __LINE__, | |
10817 | _("Invalid hardware watchpoint type.")); | |
10818 | } | |
10819 | ||
3a5c3e22 PA |
10820 | sprintf_vma (tmp, w->hw_wp_mask); |
10821 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 10822 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10823 | } |
10824 | ||
10825 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10826 | ||
2060206e | 10827 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10828 | |
10829 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10830 | ||
10831 | static int | |
10832 | is_masked_watchpoint (const struct breakpoint *b) | |
10833 | { | |
10834 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10835 | } | |
10836 | ||
53a5351d JM |
10837 | /* accessflag: hw_write: watch write, |
10838 | hw_read: watch read, | |
10839 | hw_access: watch access (read or write) */ | |
c906108c | 10840 | static void |
bbc13ae3 | 10841 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
84f4c1fe | 10842 | int just_location, int internal) |
c906108c | 10843 | { |
a9634178 | 10844 | volatile struct gdb_exception e; |
d983da9c | 10845 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c | 10846 | struct expression *exp; |
270140bd | 10847 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
a1442452 | 10848 | struct value *val, *mark, *result; |
c906108c | 10849 | struct frame_info *frame; |
bbc13ae3 KS |
10850 | const char *exp_start = NULL; |
10851 | const char *exp_end = NULL; | |
10852 | const char *tok, *end_tok; | |
9c06b0b4 | 10853 | int toklen = -1; |
bbc13ae3 KS |
10854 | const char *cond_start = NULL; |
10855 | const char *cond_end = NULL; | |
c906108c | 10856 | enum bptype bp_type; |
37e4754d | 10857 | int thread = -1; |
0cf6dd15 | 10858 | int pc = 0; |
9c06b0b4 TJB |
10859 | /* Flag to indicate whether we are going to use masks for |
10860 | the hardware watchpoint. */ | |
10861 | int use_mask = 0; | |
10862 | CORE_ADDR mask = 0; | |
3a5c3e22 | 10863 | struct watchpoint *w; |
bbc13ae3 KS |
10864 | char *expression; |
10865 | struct cleanup *back_to; | |
c906108c | 10866 | |
37e4754d LM |
10867 | /* Make sure that we actually have parameters to parse. */ |
10868 | if (arg != NULL && arg[0] != '\0') | |
10869 | { | |
bbc13ae3 KS |
10870 | const char *value_start; |
10871 | ||
10872 | exp_end = arg + strlen (arg); | |
37e4754d | 10873 | |
9c06b0b4 TJB |
10874 | /* Look for "parameter value" pairs at the end |
10875 | of the arguments string. */ | |
bbc13ae3 | 10876 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
10877 | { |
10878 | /* Skip whitespace at the end of the argument list. */ | |
10879 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10880 | tok--; | |
10881 | ||
10882 | /* Find the beginning of the last token. | |
10883 | This is the value of the parameter. */ | |
10884 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10885 | tok--; | |
10886 | value_start = tok + 1; | |
10887 | ||
10888 | /* Skip whitespace. */ | |
10889 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10890 | tok--; | |
10891 | ||
10892 | end_tok = tok; | |
10893 | ||
10894 | /* Find the beginning of the second to last token. | |
10895 | This is the parameter itself. */ | |
10896 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10897 | tok--; | |
10898 | tok++; | |
10899 | toklen = end_tok - tok + 1; | |
10900 | ||
10901 | if (toklen == 6 && !strncmp (tok, "thread", 6)) | |
10902 | { | |
10903 | /* At this point we've found a "thread" token, which means | |
10904 | the user is trying to set a watchpoint that triggers | |
10905 | only in a specific thread. */ | |
10906 | char *endp; | |
37e4754d | 10907 | |
9c06b0b4 TJB |
10908 | if (thread != -1) |
10909 | error(_("You can specify only one thread.")); | |
37e4754d | 10910 | |
9c06b0b4 TJB |
10911 | /* Extract the thread ID from the next token. */ |
10912 | thread = strtol (value_start, &endp, 0); | |
37e4754d | 10913 | |
9c06b0b4 TJB |
10914 | /* Check if the user provided a valid numeric value for the |
10915 | thread ID. */ | |
10916 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
10917 | error (_("Invalid thread ID specification %s."), value_start); | |
10918 | ||
10919 | /* Check if the thread actually exists. */ | |
10920 | if (!valid_thread_id (thread)) | |
af4908ba | 10921 | invalid_thread_id_error (thread); |
9c06b0b4 TJB |
10922 | } |
10923 | else if (toklen == 4 && !strncmp (tok, "mask", 4)) | |
10924 | { | |
10925 | /* We've found a "mask" token, which means the user wants to | |
10926 | create a hardware watchpoint that is going to have the mask | |
10927 | facility. */ | |
10928 | struct value *mask_value, *mark; | |
37e4754d | 10929 | |
9c06b0b4 TJB |
10930 | if (use_mask) |
10931 | error(_("You can specify only one mask.")); | |
37e4754d | 10932 | |
9c06b0b4 | 10933 | use_mask = just_location = 1; |
37e4754d | 10934 | |
9c06b0b4 TJB |
10935 | mark = value_mark (); |
10936 | mask_value = parse_to_comma_and_eval (&value_start); | |
10937 | mask = value_as_address (mask_value); | |
10938 | value_free_to_mark (mark); | |
10939 | } | |
10940 | else | |
10941 | /* We didn't recognize what we found. We should stop here. */ | |
10942 | break; | |
37e4754d | 10943 | |
9c06b0b4 TJB |
10944 | /* Truncate the string and get rid of the "parameter value" pair before |
10945 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 10946 | exp_end = tok; |
9c06b0b4 | 10947 | } |
37e4754d | 10948 | } |
bbc13ae3 KS |
10949 | else |
10950 | exp_end = arg; | |
37e4754d | 10951 | |
bbc13ae3 KS |
10952 | /* Parse the rest of the arguments. From here on out, everything |
10953 | is in terms of a newly allocated string instead of the original | |
10954 | ARG. */ | |
c906108c | 10955 | innermost_block = NULL; |
bbc13ae3 KS |
10956 | expression = savestring (arg, exp_end - arg); |
10957 | back_to = make_cleanup (xfree, expression); | |
10958 | exp_start = arg = expression; | |
1bb9788d | 10959 | exp = parse_exp_1 (&arg, 0, 0, 0); |
c906108c | 10960 | exp_end = arg; |
fa8a61dc TT |
10961 | /* Remove trailing whitespace from the expression before saving it. |
10962 | This makes the eventual display of the expression string a bit | |
10963 | prettier. */ | |
10964 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10965 | --exp_end; | |
10966 | ||
65d79d4b SDJ |
10967 | /* Checking if the expression is not constant. */ |
10968 | if (watchpoint_exp_is_const (exp)) | |
10969 | { | |
10970 | int len; | |
10971 | ||
10972 | len = exp_end - exp_start; | |
10973 | while (len > 0 && isspace (exp_start[len - 1])) | |
10974 | len--; | |
10975 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10976 | } | |
10977 | ||
c906108c SS |
10978 | exp_valid_block = innermost_block; |
10979 | mark = value_mark (); | |
a1442452 | 10980 | fetch_subexp_value (exp, &pc, &val, &result, NULL); |
06a64a0b TT |
10981 | |
10982 | if (just_location) | |
10983 | { | |
9c06b0b4 TJB |
10984 | int ret; |
10985 | ||
06a64a0b | 10986 | exp_valid_block = NULL; |
a1442452 | 10987 | val = value_addr (result); |
06a64a0b TT |
10988 | release_value (val); |
10989 | value_free_to_mark (mark); | |
9c06b0b4 TJB |
10990 | |
10991 | if (use_mask) | |
10992 | { | |
10993 | ret = target_masked_watch_num_registers (value_as_address (val), | |
10994 | mask); | |
10995 | if (ret == -1) | |
10996 | error (_("This target does not support masked watchpoints.")); | |
10997 | else if (ret == -2) | |
10998 | error (_("Invalid mask or memory region.")); | |
10999 | } | |
06a64a0b TT |
11000 | } |
11001 | else if (val != NULL) | |
fa4727a6 | 11002 | release_value (val); |
c906108c | 11003 | |
bbc13ae3 KS |
11004 | tok = skip_spaces_const (arg); |
11005 | end_tok = skip_to_space_const (tok); | |
c906108c SS |
11006 | |
11007 | toklen = end_tok - tok; | |
11008 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
11009 | { | |
2d134ed3 PA |
11010 | struct expression *cond; |
11011 | ||
60e1c644 | 11012 | innermost_block = NULL; |
c906108c | 11013 | tok = cond_start = end_tok + 1; |
1bb9788d | 11014 | cond = parse_exp_1 (&tok, 0, 0, 0); |
60e1c644 PA |
11015 | |
11016 | /* The watchpoint expression may not be local, but the condition | |
11017 | may still be. E.g.: `watch global if local > 0'. */ | |
11018 | cond_exp_valid_block = innermost_block; | |
11019 | ||
2d134ed3 | 11020 | xfree (cond); |
c906108c SS |
11021 | cond_end = tok; |
11022 | } | |
11023 | if (*tok) | |
8a3fe4f8 | 11024 | error (_("Junk at end of command.")); |
c906108c | 11025 | |
53a5351d | 11026 | if (accessflag == hw_read) |
c5aa993b | 11027 | bp_type = bp_read_watchpoint; |
53a5351d | 11028 | else if (accessflag == hw_access) |
c5aa993b JM |
11029 | bp_type = bp_access_watchpoint; |
11030 | else | |
11031 | bp_type = bp_hardware_watchpoint; | |
c906108c | 11032 | |
d983da9c | 11033 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
11034 | |
11035 | /* If the expression is "local", then set up a "watchpoint scope" | |
11036 | breakpoint at the point where we've left the scope of the watchpoint | |
11037 | expression. Create the scope breakpoint before the watchpoint, so | |
11038 | that we will encounter it first in bpstat_stop_status. */ | |
60e1c644 | 11039 | if (exp_valid_block && frame) |
d983da9c | 11040 | { |
edb3359d DJ |
11041 | if (frame_id_p (frame_unwind_caller_id (frame))) |
11042 | { | |
11043 | scope_breakpoint | |
a6d9a66e UW |
11044 | = create_internal_breakpoint (frame_unwind_caller_arch (frame), |
11045 | frame_unwind_caller_pc (frame), | |
06edf0c0 PA |
11046 | bp_watchpoint_scope, |
11047 | &momentary_breakpoint_ops); | |
d983da9c | 11048 | |
edb3359d | 11049 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 11050 | |
edb3359d DJ |
11051 | /* Automatically delete the breakpoint when it hits. */ |
11052 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 11053 | |
edb3359d DJ |
11054 | /* Only break in the proper frame (help with recursion). */ |
11055 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 11056 | |
edb3359d | 11057 | /* Set the address at which we will stop. */ |
a6d9a66e UW |
11058 | scope_breakpoint->loc->gdbarch |
11059 | = frame_unwind_caller_arch (frame); | |
edb3359d DJ |
11060 | scope_breakpoint->loc->requested_address |
11061 | = frame_unwind_caller_pc (frame); | |
11062 | scope_breakpoint->loc->address | |
a6d9a66e UW |
11063 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
11064 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
11065 | scope_breakpoint->type); |
11066 | } | |
d983da9c DJ |
11067 | } |
11068 | ||
c906108c | 11069 | /* Now set up the breakpoint. */ |
3a5c3e22 PA |
11070 | |
11071 | w = XCNEW (struct watchpoint); | |
11072 | b = &w->base; | |
348d480f | 11073 | if (use_mask) |
3a5c3e22 PA |
11074 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
11075 | &masked_watchpoint_breakpoint_ops); | |
348d480f | 11076 | else |
3a5c3e22 PA |
11077 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
11078 | &watchpoint_breakpoint_ops); | |
37e4754d | 11079 | b->thread = thread; |
b5de0fa7 | 11080 | b->disposition = disp_donttouch; |
348d480f | 11081 | b->pspace = current_program_space; |
3a5c3e22 PA |
11082 | w->exp = exp; |
11083 | w->exp_valid_block = exp_valid_block; | |
11084 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
11085 | if (just_location) |
11086 | { | |
11087 | struct type *t = value_type (val); | |
11088 | CORE_ADDR addr = value_as_address (val); | |
11089 | char *name; | |
11090 | ||
11091 | t = check_typedef (TYPE_TARGET_TYPE (check_typedef (t))); | |
11092 | name = type_to_string (t); | |
11093 | ||
3a5c3e22 | 11094 | w->exp_string_reparse = xstrprintf ("* (%s *) %s", name, |
d63d0675 | 11095 | core_addr_to_string (addr)); |
06a64a0b TT |
11096 | xfree (name); |
11097 | ||
3a5c3e22 | 11098 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 JK |
11099 | (int) (exp_end - exp_start), exp_start); |
11100 | ||
06a64a0b TT |
11101 | /* The above expression is in C. */ |
11102 | b->language = language_c; | |
11103 | } | |
11104 | else | |
3a5c3e22 | 11105 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
11106 | |
11107 | if (use_mask) | |
11108 | { | |
3a5c3e22 | 11109 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
11110 | } |
11111 | else | |
11112 | { | |
3a5c3e22 PA |
11113 | w->val = val; |
11114 | w->val_valid = 1; | |
9c06b0b4 | 11115 | } |
77b06cd7 | 11116 | |
c906108c SS |
11117 | if (cond_start) |
11118 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
11119 | else | |
11120 | b->cond_string = 0; | |
c5aa993b | 11121 | |
c906108c | 11122 | if (frame) |
f6bc2008 | 11123 | { |
3a5c3e22 PA |
11124 | w->watchpoint_frame = get_frame_id (frame); |
11125 | w->watchpoint_thread = inferior_ptid; | |
f6bc2008 | 11126 | } |
c906108c | 11127 | else |
f6bc2008 | 11128 | { |
3a5c3e22 PA |
11129 | w->watchpoint_frame = null_frame_id; |
11130 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 11131 | } |
c906108c | 11132 | |
d983da9c | 11133 | if (scope_breakpoint != NULL) |
c906108c | 11134 | { |
d983da9c DJ |
11135 | /* The scope breakpoint is related to the watchpoint. We will |
11136 | need to act on them together. */ | |
11137 | b->related_breakpoint = scope_breakpoint; | |
11138 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 11139 | } |
d983da9c | 11140 | |
06a64a0b TT |
11141 | if (!just_location) |
11142 | value_free_to_mark (mark); | |
2d134ed3 | 11143 | |
a9634178 TJB |
11144 | TRY_CATCH (e, RETURN_MASK_ALL) |
11145 | { | |
11146 | /* Finally update the new watchpoint. This creates the locations | |
11147 | that should be inserted. */ | |
3a5c3e22 | 11148 | update_watchpoint (w, 1); |
a9634178 TJB |
11149 | } |
11150 | if (e.reason < 0) | |
11151 | { | |
11152 | delete_breakpoint (b); | |
11153 | throw_exception (e); | |
11154 | } | |
11155 | ||
3ea46bff | 11156 | install_breakpoint (internal, b, 1); |
bbc13ae3 | 11157 | do_cleanups (back_to); |
c906108c SS |
11158 | } |
11159 | ||
e09342b5 | 11160 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 11161 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 11162 | |
c906108c | 11163 | static int |
a9634178 | 11164 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
11165 | { |
11166 | int found_memory_cnt = 0; | |
2e70b7b9 | 11167 | struct value *head = v; |
c906108c SS |
11168 | |
11169 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 11170 | if (!can_use_hw_watchpoints) |
c906108c | 11171 | return 0; |
c5aa993b | 11172 | |
5c44784c JM |
11173 | /* Make sure that the value of the expression depends only upon |
11174 | memory contents, and values computed from them within GDB. If we | |
11175 | find any register references or function calls, we can't use a | |
11176 | hardware watchpoint. | |
11177 | ||
11178 | The idea here is that evaluating an expression generates a series | |
11179 | of values, one holding the value of every subexpression. (The | |
11180 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
11181 | a*b+c.) GDB's values hold almost enough information to establish | |
11182 | the criteria given above --- they identify memory lvalues, | |
11183 | register lvalues, computed values, etcetera. So we can evaluate | |
11184 | the expression, and then scan the chain of values that leaves | |
11185 | behind to decide whether we can detect any possible change to the | |
11186 | expression's final value using only hardware watchpoints. | |
11187 | ||
11188 | However, I don't think that the values returned by inferior | |
11189 | function calls are special in any way. So this function may not | |
11190 | notice that an expression involving an inferior function call | |
11191 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 11192 | for (; v; v = value_next (v)) |
c906108c | 11193 | { |
5c44784c | 11194 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 11195 | { |
8464be76 DJ |
11196 | if (v != head && value_lazy (v)) |
11197 | /* A lazy memory lvalue in the chain is one that GDB never | |
11198 | needed to fetch; we either just used its address (e.g., | |
11199 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
11200 | in `a,b'). This doesn't apply to HEAD; if that is | |
11201 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 11202 | ; |
53a5351d | 11203 | else |
5c44784c JM |
11204 | { |
11205 | /* Ahh, memory we actually used! Check if we can cover | |
11206 | it with hardware watchpoints. */ | |
df407dfe | 11207 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
11208 | |
11209 | /* We only watch structs and arrays if user asked for it | |
11210 | explicitly, never if they just happen to appear in a | |
11211 | middle of some value chain. */ | |
11212 | if (v == head | |
11213 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
11214 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
11215 | { | |
42ae5230 | 11216 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
11217 | int len; |
11218 | int num_regs; | |
11219 | ||
a9634178 | 11220 | len = (target_exact_watchpoints |
e09342b5 TJB |
11221 | && is_scalar_type_recursive (vtype))? |
11222 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 11223 | |
e09342b5 TJB |
11224 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
11225 | if (!num_regs) | |
2e70b7b9 MS |
11226 | return 0; |
11227 | else | |
e09342b5 | 11228 | found_memory_cnt += num_regs; |
2e70b7b9 | 11229 | } |
5c44784c | 11230 | } |
c5aa993b | 11231 | } |
5086187c AC |
11232 | else if (VALUE_LVAL (v) != not_lval |
11233 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 11234 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 11235 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 11236 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
11237 | } |
11238 | ||
11239 | /* The expression itself looks suitable for using a hardware | |
11240 | watchpoint, but give the target machine a chance to reject it. */ | |
11241 | return found_memory_cnt; | |
11242 | } | |
11243 | ||
8b93c638 | 11244 | void |
84f4c1fe | 11245 | watch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11246 | { |
84f4c1fe | 11247 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
11248 | } |
11249 | ||
06a64a0b TT |
11250 | /* A helper function that looks for the "-location" argument and then |
11251 | calls watch_command_1. */ | |
11252 | ||
11253 | static void | |
11254 | watch_maybe_just_location (char *arg, int accessflag, int from_tty) | |
11255 | { | |
11256 | int just_location = 0; | |
11257 | ||
11258 | if (arg | |
11259 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
11260 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
11261 | { | |
e9cafbcc | 11262 | arg = skip_spaces (arg); |
06a64a0b TT |
11263 | just_location = 1; |
11264 | } | |
11265 | ||
84f4c1fe | 11266 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 11267 | } |
8926118c | 11268 | |
c5aa993b | 11269 | static void |
fba45db2 | 11270 | watch_command (char *arg, int from_tty) |
c906108c | 11271 | { |
06a64a0b | 11272 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
11273 | } |
11274 | ||
8b93c638 | 11275 | void |
84f4c1fe | 11276 | rwatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11277 | { |
84f4c1fe | 11278 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 11279 | } |
8926118c | 11280 | |
c5aa993b | 11281 | static void |
fba45db2 | 11282 | rwatch_command (char *arg, int from_tty) |
c906108c | 11283 | { |
06a64a0b | 11284 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
11285 | } |
11286 | ||
8b93c638 | 11287 | void |
84f4c1fe | 11288 | awatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11289 | { |
84f4c1fe | 11290 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 11291 | } |
8926118c | 11292 | |
c5aa993b | 11293 | static void |
fba45db2 | 11294 | awatch_command (char *arg, int from_tty) |
c906108c | 11295 | { |
06a64a0b | 11296 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 11297 | } |
c906108c | 11298 | \f |
c5aa993b | 11299 | |
43ff13b4 | 11300 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
11301 | because it uses the mechanisms of breakpoints. */ |
11302 | ||
bfec99b2 PA |
11303 | struct until_break_command_continuation_args |
11304 | { | |
11305 | struct breakpoint *breakpoint; | |
11306 | struct breakpoint *breakpoint2; | |
186c406b | 11307 | int thread_num; |
bfec99b2 PA |
11308 | }; |
11309 | ||
43ff13b4 | 11310 | /* This function is called by fetch_inferior_event via the |
4a64f543 | 11311 | cmd_continuation pointer, to complete the until command. It takes |
43ff13b4 | 11312 | care of cleaning up the temporary breakpoints set up by the until |
4a64f543 | 11313 | command. */ |
c2c6d25f | 11314 | static void |
fa4cd53f | 11315 | until_break_command_continuation (void *arg, int err) |
43ff13b4 | 11316 | { |
bfec99b2 PA |
11317 | struct until_break_command_continuation_args *a = arg; |
11318 | ||
11319 | delete_breakpoint (a->breakpoint); | |
11320 | if (a->breakpoint2) | |
11321 | delete_breakpoint (a->breakpoint2); | |
186c406b | 11322 | delete_longjmp_breakpoint (a->thread_num); |
43ff13b4 JM |
11323 | } |
11324 | ||
c906108c | 11325 | void |
ae66c1fc | 11326 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
11327 | { |
11328 | struct symtabs_and_lines sals; | |
11329 | struct symtab_and_line sal; | |
8556afb4 PA |
11330 | struct frame_info *frame; |
11331 | struct gdbarch *frame_gdbarch; | |
11332 | struct frame_id stack_frame_id; | |
11333 | struct frame_id caller_frame_id; | |
c906108c | 11334 | struct breakpoint *breakpoint; |
f107f563 | 11335 | struct breakpoint *breakpoint2 = NULL; |
c906108c | 11336 | struct cleanup *old_chain; |
186c406b TT |
11337 | int thread; |
11338 | struct thread_info *tp; | |
c906108c SS |
11339 | |
11340 | clear_proceed_status (); | |
11341 | ||
11342 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11343 | this function. */ |
c5aa993b | 11344 | |
1bfeeb0f | 11345 | if (last_displayed_sal_is_valid ()) |
f8eba3c6 | 11346 | sals = decode_line_1 (&arg, DECODE_LINE_FUNFIRSTLINE, |
1bfeeb0f | 11347 | get_last_displayed_symtab (), |
f8eba3c6 | 11348 | get_last_displayed_line ()); |
c906108c | 11349 | else |
f8eba3c6 TT |
11350 | sals = decode_line_1 (&arg, DECODE_LINE_FUNFIRSTLINE, |
11351 | (struct symtab *) NULL, 0); | |
c5aa993b | 11352 | |
c906108c | 11353 | if (sals.nelts != 1) |
8a3fe4f8 | 11354 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11355 | |
c906108c | 11356 | sal = sals.sals[0]; |
4a64f543 | 11357 | xfree (sals.sals); /* malloc'd, so freed. */ |
c5aa993b | 11358 | |
c906108c | 11359 | if (*arg) |
8a3fe4f8 | 11360 | error (_("Junk at end of arguments.")); |
c5aa993b | 11361 | |
c906108c | 11362 | resolve_sal_pc (&sal); |
c5aa993b | 11363 | |
186c406b TT |
11364 | tp = inferior_thread (); |
11365 | thread = tp->num; | |
11366 | ||
883bc8d1 PA |
11367 | old_chain = make_cleanup (null_cleanup, NULL); |
11368 | ||
8556afb4 PA |
11369 | /* Note linespec handling above invalidates the frame chain. |
11370 | Installing a breakpoint also invalidates the frame chain (as it | |
11371 | may need to switch threads), so do any frame handling before | |
11372 | that. */ | |
11373 | ||
11374 | frame = get_selected_frame (NULL); | |
11375 | frame_gdbarch = get_frame_arch (frame); | |
11376 | stack_frame_id = get_stack_frame_id (frame); | |
11377 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11378 | |
ae66c1fc EZ |
11379 | /* Keep within the current frame, or in frames called by the current |
11380 | one. */ | |
edb3359d | 11381 | |
883bc8d1 | 11382 | if (frame_id_p (caller_frame_id)) |
c906108c | 11383 | { |
883bc8d1 PA |
11384 | struct symtab_and_line sal2; |
11385 | ||
11386 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11387 | sal2.pc = frame_unwind_caller_pc (frame); | |
a6d9a66e | 11388 | breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame), |
883bc8d1 PA |
11389 | sal2, |
11390 | caller_frame_id, | |
f107f563 VP |
11391 | bp_until); |
11392 | make_cleanup_delete_breakpoint (breakpoint2); | |
186c406b | 11393 | |
883bc8d1 | 11394 | set_longjmp_breakpoint (tp, caller_frame_id); |
186c406b | 11395 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); |
c906108c | 11396 | } |
c5aa993b | 11397 | |
c70a6932 JK |
11398 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11399 | frame = NULL; | |
11400 | ||
883bc8d1 PA |
11401 | if (anywhere) |
11402 | /* If the user told us to continue until a specified location, | |
11403 | we don't specify a frame at which we need to stop. */ | |
11404 | breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, | |
11405 | null_frame_id, bp_until); | |
11406 | else | |
11407 | /* Otherwise, specify the selected frame, because we want to stop | |
11408 | only at the very same frame. */ | |
11409 | breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, | |
11410 | stack_frame_id, bp_until); | |
11411 | make_cleanup_delete_breakpoint (breakpoint); | |
11412 | ||
a493e3e2 | 11413 | proceed (-1, GDB_SIGNAL_DEFAULT, 0); |
f107f563 | 11414 | |
4a64f543 MS |
11415 | /* If we are running asynchronously, and proceed call above has |
11416 | actually managed to start the target, arrange for breakpoints to | |
11417 | be deleted when the target stops. Otherwise, we're already | |
11418 | stopped and delete breakpoints via cleanup chain. */ | |
f107f563 | 11419 | |
8ea051c5 | 11420 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 11421 | { |
bfec99b2 PA |
11422 | struct until_break_command_continuation_args *args; |
11423 | args = xmalloc (sizeof (*args)); | |
f107f563 | 11424 | |
bfec99b2 PA |
11425 | args->breakpoint = breakpoint; |
11426 | args->breakpoint2 = breakpoint2; | |
186c406b | 11427 | args->thread_num = thread; |
f107f563 VP |
11428 | |
11429 | discard_cleanups (old_chain); | |
95e54da7 PA |
11430 | add_continuation (inferior_thread (), |
11431 | until_break_command_continuation, args, | |
604ead4a | 11432 | xfree); |
f107f563 VP |
11433 | } |
11434 | else | |
c5aa993b | 11435 | do_cleanups (old_chain); |
c906108c | 11436 | } |
ae66c1fc | 11437 | |
c906108c SS |
11438 | /* This function attempts to parse an optional "if <cond>" clause |
11439 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11440 | |
c906108c SS |
11441 | Else, it returns a pointer to the condition string. (It does not |
11442 | attempt to evaluate the string against a particular block.) And, | |
11443 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11444 | if clause in the arg string. */ |
53a5351d | 11445 | |
c906108c | 11446 | static char * |
fba45db2 | 11447 | ep_parse_optional_if_clause (char **arg) |
c906108c | 11448 | { |
c5aa993b JM |
11449 | char *cond_string; |
11450 | ||
11451 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11452 | return NULL; |
c5aa993b | 11453 | |
4a64f543 | 11454 | /* Skip the "if" keyword. */ |
c906108c | 11455 | (*arg) += 2; |
c5aa993b | 11456 | |
c906108c | 11457 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11458 | condition string. */ |
e9cafbcc | 11459 | *arg = skip_spaces (*arg); |
c906108c | 11460 | cond_string = *arg; |
c5aa993b | 11461 | |
4a64f543 MS |
11462 | /* Assume that the condition occupies the remainder of the arg |
11463 | string. */ | |
c906108c | 11464 | (*arg) += strlen (cond_string); |
c5aa993b | 11465 | |
c906108c SS |
11466 | return cond_string; |
11467 | } | |
c5aa993b | 11468 | |
c906108c SS |
11469 | /* Commands to deal with catching events, such as signals, exceptions, |
11470 | process start/exit, etc. */ | |
c5aa993b JM |
11471 | |
11472 | typedef enum | |
11473 | { | |
44feb3ce TT |
11474 | catch_fork_temporary, catch_vfork_temporary, |
11475 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11476 | } |
11477 | catch_fork_kind; | |
11478 | ||
c906108c | 11479 | static void |
cc59ec59 MS |
11480 | catch_fork_command_1 (char *arg, int from_tty, |
11481 | struct cmd_list_element *command) | |
c906108c | 11482 | { |
a6d9a66e | 11483 | struct gdbarch *gdbarch = get_current_arch (); |
c5aa993b | 11484 | char *cond_string = NULL; |
44feb3ce TT |
11485 | catch_fork_kind fork_kind; |
11486 | int tempflag; | |
11487 | ||
11488 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
11489 | tempflag = (fork_kind == catch_fork_temporary | |
11490 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11491 | |
44feb3ce TT |
11492 | if (!arg) |
11493 | arg = ""; | |
e9cafbcc | 11494 | arg = skip_spaces (arg); |
c5aa993b | 11495 | |
c906108c | 11496 | /* The allowed syntax is: |
c5aa993b JM |
11497 | catch [v]fork |
11498 | catch [v]fork if <cond> | |
11499 | ||
4a64f543 | 11500 | First, check if there's an if clause. */ |
c906108c | 11501 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11502 | |
c906108c | 11503 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11504 | error (_("Junk at end of arguments.")); |
c5aa993b | 11505 | |
c906108c | 11506 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11507 | and enable reporting of such events. */ |
c5aa993b JM |
11508 | switch (fork_kind) |
11509 | { | |
44feb3ce TT |
11510 | case catch_fork_temporary: |
11511 | case catch_fork_permanent: | |
a6d9a66e | 11512 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11513 | &catch_fork_breakpoint_ops); |
c906108c | 11514 | break; |
44feb3ce TT |
11515 | case catch_vfork_temporary: |
11516 | case catch_vfork_permanent: | |
a6d9a66e | 11517 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11518 | &catch_vfork_breakpoint_ops); |
c906108c | 11519 | break; |
c5aa993b | 11520 | default: |
8a3fe4f8 | 11521 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11522 | break; |
c5aa993b | 11523 | } |
c906108c SS |
11524 | } |
11525 | ||
11526 | static void | |
cc59ec59 MS |
11527 | catch_exec_command_1 (char *arg, int from_tty, |
11528 | struct cmd_list_element *command) | |
c906108c | 11529 | { |
b4d90040 | 11530 | struct exec_catchpoint *c; |
a6d9a66e | 11531 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 11532 | int tempflag; |
c5aa993b | 11533 | char *cond_string = NULL; |
c906108c | 11534 | |
44feb3ce TT |
11535 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
11536 | ||
11537 | if (!arg) | |
11538 | arg = ""; | |
e9cafbcc | 11539 | arg = skip_spaces (arg); |
c906108c SS |
11540 | |
11541 | /* The allowed syntax is: | |
c5aa993b JM |
11542 | catch exec |
11543 | catch exec if <cond> | |
c906108c | 11544 | |
4a64f543 | 11545 | First, check if there's an if clause. */ |
c906108c SS |
11546 | cond_string = ep_parse_optional_if_clause (&arg); |
11547 | ||
11548 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11549 | error (_("Junk at end of arguments.")); |
c906108c | 11550 | |
b4d90040 PA |
11551 | c = XNEW (struct exec_catchpoint); |
11552 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, | |
11553 | &catch_exec_breakpoint_ops); | |
11554 | c->exec_pathname = NULL; | |
11555 | ||
3ea46bff | 11556 | install_breakpoint (0, &c->base, 1); |
c906108c | 11557 | } |
c5aa993b | 11558 | |
3086aeae | 11559 | static enum print_stop_action |
348d480f | 11560 | print_it_exception_catchpoint (bpstat bs) |
3086aeae | 11561 | { |
79a45e25 | 11562 | struct ui_out *uiout = current_uiout; |
348d480f | 11563 | struct breakpoint *b = bs->breakpoint_at; |
ade92717 | 11564 | int bp_temp, bp_throw; |
3086aeae | 11565 | |
ade92717 | 11566 | annotate_catchpoint (b->number); |
3086aeae | 11567 | |
ade92717 AR |
11568 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
11569 | if (b->loc->address != b->loc->requested_address) | |
11570 | breakpoint_adjustment_warning (b->loc->requested_address, | |
11571 | b->loc->address, | |
11572 | b->number, 1); | |
df2b6d2d | 11573 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
11574 | ui_out_text (uiout, |
11575 | bp_temp ? "Temporary catchpoint " | |
11576 | : "Catchpoint "); | |
11577 | if (!ui_out_is_mi_like_p (uiout)) | |
11578 | ui_out_field_int (uiout, "bkptno", b->number); | |
11579 | ui_out_text (uiout, | |
c0b37c48 AR |
11580 | bp_throw ? " (exception thrown), " |
11581 | : " (exception caught), "); | |
ade92717 AR |
11582 | if (ui_out_is_mi_like_p (uiout)) |
11583 | { | |
11584 | ui_out_field_string (uiout, "reason", | |
11585 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
11586 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
11587 | ui_out_field_int (uiout, "bkptno", b->number); | |
11588 | } | |
3086aeae DJ |
11589 | return PRINT_SRC_AND_LOC; |
11590 | } | |
11591 | ||
11592 | static void | |
cc59ec59 MS |
11593 | print_one_exception_catchpoint (struct breakpoint *b, |
11594 | struct bp_location **last_loc) | |
3086aeae | 11595 | { |
79a45b7d | 11596 | struct value_print_options opts; |
79a45e25 | 11597 | struct ui_out *uiout = current_uiout; |
cc59ec59 | 11598 | |
79a45b7d TT |
11599 | get_user_print_options (&opts); |
11600 | if (opts.addressprint) | |
3086aeae DJ |
11601 | { |
11602 | annotate_field (4); | |
604133b5 AR |
11603 | if (b->loc == NULL || b->loc->shlib_disabled) |
11604 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
11605 | else | |
5af949e3 UW |
11606 | ui_out_field_core_addr (uiout, "addr", |
11607 | b->loc->gdbarch, b->loc->address); | |
3086aeae DJ |
11608 | } |
11609 | annotate_field (5); | |
604133b5 | 11610 | if (b->loc) |
a6d9a66e | 11611 | *last_loc = b->loc; |
3086aeae | 11612 | if (strstr (b->addr_string, "throw") != NULL) |
8ac3646f TT |
11613 | { |
11614 | ui_out_field_string (uiout, "what", "exception throw"); | |
11615 | if (ui_out_is_mi_like_p (uiout)) | |
11616 | ui_out_field_string (uiout, "catch-type", "throw"); | |
11617 | } | |
3086aeae | 11618 | else |
8ac3646f TT |
11619 | { |
11620 | ui_out_field_string (uiout, "what", "exception catch"); | |
11621 | if (ui_out_is_mi_like_p (uiout)) | |
11622 | ui_out_field_string (uiout, "catch-type", "catch"); | |
11623 | } | |
3086aeae DJ |
11624 | } |
11625 | ||
11626 | static void | |
11627 | print_mention_exception_catchpoint (struct breakpoint *b) | |
11628 | { | |
79a45e25 | 11629 | struct ui_out *uiout = current_uiout; |
ade92717 AR |
11630 | int bp_temp; |
11631 | int bp_throw; | |
11632 | ||
df2b6d2d | 11633 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
11634 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
11635 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
11636 | : _("Catchpoint ")); | |
11637 | ui_out_field_int (uiout, "bkptno", b->number); | |
11638 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
11639 | : _(" (catch)")); | |
3086aeae DJ |
11640 | } |
11641 | ||
6149aea9 PA |
11642 | /* Implement the "print_recreate" breakpoint_ops method for throw and |
11643 | catch catchpoints. */ | |
11644 | ||
11645 | static void | |
4a64f543 MS |
11646 | print_recreate_exception_catchpoint (struct breakpoint *b, |
11647 | struct ui_file *fp) | |
6149aea9 PA |
11648 | { |
11649 | int bp_temp; | |
11650 | int bp_throw; | |
11651 | ||
11652 | bp_temp = b->disposition == disp_del; | |
11653 | bp_throw = strstr (b->addr_string, "throw") != NULL; | |
11654 | fprintf_unfiltered (fp, bp_temp ? "tcatch " : "catch "); | |
11655 | fprintf_unfiltered (fp, bp_throw ? "throw" : "catch"); | |
d9b3f62e | 11656 | print_recreate_thread (b, fp); |
6149aea9 PA |
11657 | } |
11658 | ||
2060206e | 11659 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops; |
3086aeae DJ |
11660 | |
11661 | static int | |
11662 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
11663 | enum exception_event_kind ex_event, int from_tty) | |
11664 | { | |
604133b5 AR |
11665 | char *trigger_func_name; |
11666 | ||
3086aeae | 11667 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 11668 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 11669 | else |
604133b5 | 11670 | trigger_func_name = "__cxa_throw"; |
3086aeae | 11671 | |
8cdf0e15 | 11672 | create_breakpoint (get_current_arch (), |
e7e0cddf | 11673 | trigger_func_name, cond_string, -1, NULL, |
8cdf0e15 | 11674 | 0 /* condition and thread are valid. */, |
0fb4aa4b | 11675 | tempflag, bp_breakpoint, |
8cdf0e15 VP |
11676 | 0, |
11677 | AUTO_BOOLEAN_TRUE /* pending */, | |
11678 | &gnu_v3_exception_catchpoint_ops, from_tty, | |
84f4c1fe | 11679 | 1 /* enabled */, |
44f238bb PA |
11680 | 0 /* internal */, |
11681 | 0); | |
3086aeae | 11682 | |
3086aeae DJ |
11683 | return 1; |
11684 | } | |
11685 | ||
4a64f543 | 11686 | /* Deal with "catch catch" and "catch throw" commands. */ |
c906108c SS |
11687 | |
11688 | static void | |
fba45db2 KB |
11689 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
11690 | int tempflag, int from_tty) | |
c906108c | 11691 | { |
c5aa993b | 11692 | char *cond_string = NULL; |
c5aa993b | 11693 | |
44feb3ce TT |
11694 | if (!arg) |
11695 | arg = ""; | |
e9cafbcc | 11696 | arg = skip_spaces (arg); |
c5aa993b | 11697 | |
c906108c SS |
11698 | cond_string = ep_parse_optional_if_clause (&arg); |
11699 | ||
11700 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11701 | error (_("Junk at end of arguments.")); |
c906108c | 11702 | |
059fb39f PM |
11703 | if (ex_event != EX_EVENT_THROW |
11704 | && ex_event != EX_EVENT_CATCH) | |
8a3fe4f8 | 11705 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 11706 | |
3086aeae DJ |
11707 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
11708 | return; | |
11709 | ||
8a3fe4f8 | 11710 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
11711 | } |
11712 | ||
44feb3ce TT |
11713 | /* Implementation of "catch catch" command. */ |
11714 | ||
11715 | static void | |
11716 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
11717 | { | |
11718 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 11719 | |
44feb3ce TT |
11720 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); |
11721 | } | |
11722 | ||
11723 | /* Implementation of "catch throw" command. */ | |
11724 | ||
11725 | static void | |
11726 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
11727 | { | |
11728 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 11729 | |
44feb3ce TT |
11730 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); |
11731 | } | |
11732 | ||
9ac4176b | 11733 | void |
28010a5d PA |
11734 | init_ada_exception_breakpoint (struct breakpoint *b, |
11735 | struct gdbarch *gdbarch, | |
11736 | struct symtab_and_line sal, | |
11737 | char *addr_string, | |
c0a91b2b | 11738 | const struct breakpoint_ops *ops, |
28010a5d PA |
11739 | int tempflag, |
11740 | int from_tty) | |
f7f9143b | 11741 | { |
f7f9143b JB |
11742 | if (from_tty) |
11743 | { | |
5af949e3 UW |
11744 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11745 | if (!loc_gdbarch) | |
11746 | loc_gdbarch = gdbarch; | |
11747 | ||
6c95b8df PA |
11748 | describe_other_breakpoints (loc_gdbarch, |
11749 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
11750 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
11751 | version for exception catchpoints, because two catchpoints | |
11752 | used for different exception names will use the same address. | |
11753 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 11754 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 11755 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
11756 | the user what type of catchpoint it is. The above is good |
11757 | enough for now, though. */ | |
11758 | } | |
11759 | ||
28010a5d | 11760 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b JB |
11761 | |
11762 | b->enable_state = bp_enabled; | |
11763 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
f7f9143b JB |
11764 | b->addr_string = addr_string; |
11765 | b->language = language_ada; | |
f7f9143b JB |
11766 | } |
11767 | ||
a96d9b2e SDJ |
11768 | /* Splits the argument using space as delimiter. Returns an xmalloc'd |
11769 | filter list, or NULL if no filtering is required. */ | |
11770 | static VEC(int) * | |
11771 | catch_syscall_split_args (char *arg) | |
11772 | { | |
11773 | VEC(int) *result = NULL; | |
29d0bb3d | 11774 | struct cleanup *cleanup = make_cleanup (VEC_cleanup (int), &result); |
a96d9b2e SDJ |
11775 | |
11776 | while (*arg != '\0') | |
11777 | { | |
11778 | int i, syscall_number; | |
11779 | char *endptr; | |
11780 | char cur_name[128]; | |
11781 | struct syscall s; | |
11782 | ||
11783 | /* Skip whitespace. */ | |
529480d0 | 11784 | arg = skip_spaces (arg); |
a96d9b2e SDJ |
11785 | |
11786 | for (i = 0; i < 127 && arg[i] && !isspace (arg[i]); ++i) | |
11787 | cur_name[i] = arg[i]; | |
11788 | cur_name[i] = '\0'; | |
11789 | arg += i; | |
11790 | ||
11791 | /* Check if the user provided a syscall name or a number. */ | |
11792 | syscall_number = (int) strtol (cur_name, &endptr, 0); | |
11793 | if (*endptr == '\0') | |
bccd0dd2 | 11794 | get_syscall_by_number (syscall_number, &s); |
a96d9b2e SDJ |
11795 | else |
11796 | { | |
11797 | /* We have a name. Let's check if it's valid and convert it | |
11798 | to a number. */ | |
11799 | get_syscall_by_name (cur_name, &s); | |
11800 | ||
11801 | if (s.number == UNKNOWN_SYSCALL) | |
4a64f543 MS |
11802 | /* Here we have to issue an error instead of a warning, |
11803 | because GDB cannot do anything useful if there's no | |
11804 | syscall number to be caught. */ | |
a96d9b2e SDJ |
11805 | error (_("Unknown syscall name '%s'."), cur_name); |
11806 | } | |
11807 | ||
11808 | /* Ok, it's valid. */ | |
11809 | VEC_safe_push (int, result, s.number); | |
11810 | } | |
11811 | ||
11812 | discard_cleanups (cleanup); | |
11813 | return result; | |
11814 | } | |
11815 | ||
11816 | /* Implement the "catch syscall" command. */ | |
11817 | ||
11818 | static void | |
cc59ec59 MS |
11819 | catch_syscall_command_1 (char *arg, int from_tty, |
11820 | struct cmd_list_element *command) | |
a96d9b2e SDJ |
11821 | { |
11822 | int tempflag; | |
11823 | VEC(int) *filter; | |
11824 | struct syscall s; | |
11825 | struct gdbarch *gdbarch = get_current_arch (); | |
11826 | ||
11827 | /* Checking if the feature if supported. */ | |
11828 | if (gdbarch_get_syscall_number_p (gdbarch) == 0) | |
11829 | error (_("The feature 'catch syscall' is not supported on \ | |
ea666128 | 11830 | this architecture yet.")); |
a96d9b2e SDJ |
11831 | |
11832 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
11833 | ||
e9cafbcc | 11834 | arg = skip_spaces (arg); |
a96d9b2e SDJ |
11835 | |
11836 | /* We need to do this first "dummy" translation in order | |
11837 | to get the syscall XML file loaded or, most important, | |
11838 | to display a warning to the user if there's no XML file | |
11839 | for his/her architecture. */ | |
11840 | get_syscall_by_number (0, &s); | |
11841 | ||
11842 | /* The allowed syntax is: | |
11843 | catch syscall | |
11844 | catch syscall <name | number> [<name | number> ... <name | number>] | |
11845 | ||
11846 | Let's check if there's a syscall name. */ | |
11847 | ||
11848 | if (arg != NULL) | |
11849 | filter = catch_syscall_split_args (arg); | |
11850 | else | |
11851 | filter = NULL; | |
11852 | ||
11853 | create_syscall_event_catchpoint (tempflag, filter, | |
11854 | &catch_syscall_breakpoint_ops); | |
11855 | } | |
11856 | ||
c906108c | 11857 | static void |
fba45db2 | 11858 | catch_command (char *arg, int from_tty) |
c906108c | 11859 | { |
44feb3ce | 11860 | error (_("Catch requires an event name.")); |
c906108c SS |
11861 | } |
11862 | \f | |
11863 | ||
11864 | static void | |
fba45db2 | 11865 | tcatch_command (char *arg, int from_tty) |
c906108c | 11866 | { |
44feb3ce | 11867 | error (_("Catch requires an event name.")); |
c906108c SS |
11868 | } |
11869 | ||
8a2c437b TT |
11870 | /* A qsort comparison function that sorts breakpoints in order. */ |
11871 | ||
11872 | static int | |
11873 | compare_breakpoints (const void *a, const void *b) | |
11874 | { | |
11875 | const breakpoint_p *ba = a; | |
11876 | uintptr_t ua = (uintptr_t) *ba; | |
11877 | const breakpoint_p *bb = b; | |
11878 | uintptr_t ub = (uintptr_t) *bb; | |
11879 | ||
11880 | if ((*ba)->number < (*bb)->number) | |
11881 | return -1; | |
11882 | else if ((*ba)->number > (*bb)->number) | |
11883 | return 1; | |
11884 | ||
11885 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11886 | the number 0. */ | |
11887 | if (ua < ub) | |
11888 | return -1; | |
94b0e70d | 11889 | return ua > ub ? 1 : 0; |
8a2c437b TT |
11890 | } |
11891 | ||
80f8a6eb | 11892 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11893 | |
11894 | static void | |
fba45db2 | 11895 | clear_command (char *arg, int from_tty) |
c906108c | 11896 | { |
8a2c437b | 11897 | struct breakpoint *b, *prev; |
d6e956e5 VP |
11898 | VEC(breakpoint_p) *found = 0; |
11899 | int ix; | |
c906108c SS |
11900 | int default_match; |
11901 | struct symtabs_and_lines sals; | |
11902 | struct symtab_and_line sal; | |
c906108c | 11903 | int i; |
8a2c437b | 11904 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); |
c906108c SS |
11905 | |
11906 | if (arg) | |
11907 | { | |
39cf75f7 DE |
11908 | sals = decode_line_with_current_source (arg, |
11909 | (DECODE_LINE_FUNFIRSTLINE | |
11910 | | DECODE_LINE_LIST_MODE)); | |
cf4ded82 | 11911 | make_cleanup (xfree, sals.sals); |
c906108c SS |
11912 | default_match = 0; |
11913 | } | |
11914 | else | |
11915 | { | |
c5aa993b | 11916 | sals.sals = (struct symtab_and_line *) |
c906108c | 11917 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 11918 | make_cleanup (xfree, sals.sals); |
4a64f543 | 11919 | init_sal (&sal); /* Initialize to zeroes. */ |
1bfeeb0f JL |
11920 | |
11921 | /* Set sal's line, symtab, pc, and pspace to the values | |
11922 | corresponding to the last call to print_frame_info. If the | |
11923 | codepoint is not valid, this will set all the fields to 0. */ | |
11924 | get_last_displayed_sal (&sal); | |
c906108c | 11925 | if (sal.symtab == 0) |
8a3fe4f8 | 11926 | error (_("No source file specified.")); |
c906108c SS |
11927 | |
11928 | sals.sals[0] = sal; | |
11929 | sals.nelts = 1; | |
11930 | ||
11931 | default_match = 1; | |
11932 | } | |
11933 | ||
4a64f543 MS |
11934 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11935 | seems, because all existing breakpoints typically have both | |
11936 | file/line and pc set. So, if clear is given file/line, we can | |
11937 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11938 | |
11939 | We only support clearing given the address explicitly | |
11940 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11941 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11942 | due to optimization, all in one block. |
4a64f543 MS |
11943 | |
11944 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11945 | PC corresponding to the same file:line, the breakpoint won't |
11946 | be cleared. We probably can still clear the breakpoint, but | |
11947 | since the other PC value is never presented to user, user | |
11948 | can only find it by guessing, and it does not seem important | |
11949 | to support that. */ | |
11950 | ||
4a64f543 MS |
11951 | /* For each line spec given, delete bps which correspond to it. Do |
11952 | it in two passes, solely to preserve the current behavior that | |
11953 | from_tty is forced true if we delete more than one | |
11954 | breakpoint. */ | |
c906108c | 11955 | |
80f8a6eb | 11956 | found = NULL; |
8a2c437b | 11957 | make_cleanup (VEC_cleanup (breakpoint_p), &found); |
c906108c SS |
11958 | for (i = 0; i < sals.nelts; i++) |
11959 | { | |
05cba821 JK |
11960 | const char *sal_fullname; |
11961 | ||
c906108c | 11962 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
11963 | If line given (pc == 0), clear all bpts on specified line. |
11964 | If defaulting, clear all bpts on default line | |
c906108c | 11965 | or at default pc. |
c5aa993b JM |
11966 | |
11967 | defaulting sal.pc != 0 tests to do | |
11968 | ||
11969 | 0 1 pc | |
11970 | 1 1 pc _and_ line | |
11971 | 0 0 line | |
11972 | 1 0 <can't happen> */ | |
c906108c SS |
11973 | |
11974 | sal = sals.sals[i]; | |
05cba821 JK |
11975 | sal_fullname = (sal.symtab == NULL |
11976 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 11977 | |
4a64f543 | 11978 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 11979 | ALL_BREAKPOINTS (b) |
c5aa993b | 11980 | { |
0d381245 | 11981 | int match = 0; |
4a64f543 | 11982 | /* Are we going to delete b? */ |
cc60f2e3 | 11983 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
11984 | { |
11985 | struct bp_location *loc = b->loc; | |
11986 | for (; loc; loc = loc->next) | |
11987 | { | |
f8eba3c6 TT |
11988 | /* If the user specified file:line, don't allow a PC |
11989 | match. This matches historical gdb behavior. */ | |
11990 | int pc_match = (!sal.explicit_line | |
11991 | && sal.pc | |
11992 | && (loc->pspace == sal.pspace) | |
11993 | && (loc->address == sal.pc) | |
11994 | && (!section_is_overlay (loc->section) | |
11995 | || loc->section == sal.section)); | |
4aac40c8 TT |
11996 | int line_match = 0; |
11997 | ||
11998 | if ((default_match || sal.explicit_line) | |
2f202fde | 11999 | && loc->symtab != NULL |
05cba821 | 12000 | && sal_fullname != NULL |
4aac40c8 | 12001 | && sal.pspace == loc->pspace |
05cba821 JK |
12002 | && loc->line_number == sal.line |
12003 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
12004 | sal_fullname) == 0) | |
12005 | line_match = 1; | |
4aac40c8 | 12006 | |
0d381245 VP |
12007 | if (pc_match || line_match) |
12008 | { | |
12009 | match = 1; | |
12010 | break; | |
12011 | } | |
12012 | } | |
12013 | } | |
12014 | ||
12015 | if (match) | |
d6e956e5 | 12016 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 12017 | } |
80f8a6eb | 12018 | } |
8a2c437b | 12019 | |
80f8a6eb | 12020 | /* Now go thru the 'found' chain and delete them. */ |
d6e956e5 | 12021 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
12022 | { |
12023 | if (arg) | |
8a3fe4f8 | 12024 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 12025 | else |
8a3fe4f8 | 12026 | error (_("No breakpoint at this line.")); |
80f8a6eb | 12027 | } |
c906108c | 12028 | |
8a2c437b TT |
12029 | /* Remove duplicates from the vec. */ |
12030 | qsort (VEC_address (breakpoint_p, found), | |
12031 | VEC_length (breakpoint_p, found), | |
12032 | sizeof (breakpoint_p), | |
12033 | compare_breakpoints); | |
12034 | prev = VEC_index (breakpoint_p, found, 0); | |
12035 | for (ix = 1; VEC_iterate (breakpoint_p, found, ix, b); ++ix) | |
12036 | { | |
12037 | if (b == prev) | |
12038 | { | |
12039 | VEC_ordered_remove (breakpoint_p, found, ix); | |
12040 | --ix; | |
12041 | } | |
12042 | } | |
12043 | ||
d6e956e5 | 12044 | if (VEC_length(breakpoint_p, found) > 1) |
4a64f543 | 12045 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 12046 | if (from_tty) |
a3f17187 | 12047 | { |
d6e956e5 | 12048 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
12049 | printf_unfiltered (_("Deleted breakpoint ")); |
12050 | else | |
12051 | printf_unfiltered (_("Deleted breakpoints ")); | |
12052 | } | |
d6e956e5 VP |
12053 | |
12054 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 12055 | { |
c5aa993b | 12056 | if (from_tty) |
d6e956e5 VP |
12057 | printf_unfiltered ("%d ", b->number); |
12058 | delete_breakpoint (b); | |
c906108c | 12059 | } |
80f8a6eb MS |
12060 | if (from_tty) |
12061 | putchar_unfiltered ('\n'); | |
8a2c437b TT |
12062 | |
12063 | do_cleanups (cleanups); | |
c906108c SS |
12064 | } |
12065 | \f | |
12066 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
12067 | all breakpoints that are marked for deletion, whether hit or not. | |
12068 | This is called after any breakpoint is hit, or after errors. */ | |
12069 | ||
12070 | void | |
fba45db2 | 12071 | breakpoint_auto_delete (bpstat bs) |
c906108c | 12072 | { |
35df4500 | 12073 | struct breakpoint *b, *b_tmp; |
c906108c SS |
12074 | |
12075 | for (; bs; bs = bs->next) | |
f431efe5 PA |
12076 | if (bs->breakpoint_at |
12077 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 12078 | && bs->stop) |
f431efe5 | 12079 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 12080 | |
35df4500 | 12081 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 12082 | { |
b5de0fa7 | 12083 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
12084 | delete_breakpoint (b); |
12085 | } | |
c906108c SS |
12086 | } |
12087 | ||
4a64f543 MS |
12088 | /* A comparison function for bp_location AP and BP being interfaced to |
12089 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
12090 | does breakpoint_address_is_meaningful say for its OWNER), | |
12091 | secondarily by ordering first bp_permanent OWNERed elements and | |
12092 | terciarily just ensuring the array is sorted stable way despite | |
e5dd4106 | 12093 | qsort being an unstable algorithm. */ |
876fa593 JK |
12094 | |
12095 | static int | |
494cfb0f | 12096 | bp_location_compare (const void *ap, const void *bp) |
876fa593 | 12097 | { |
494cfb0f JK |
12098 | struct bp_location *a = *(void **) ap; |
12099 | struct bp_location *b = *(void **) bp; | |
2bdf28a0 | 12100 | /* A and B come from existing breakpoints having non-NULL OWNER. */ |
876fa593 JK |
12101 | int a_perm = a->owner->enable_state == bp_permanent; |
12102 | int b_perm = b->owner->enable_state == bp_permanent; | |
12103 | ||
12104 | if (a->address != b->address) | |
12105 | return (a->address > b->address) - (a->address < b->address); | |
12106 | ||
dea2aa5f LM |
12107 | /* Sort locations at the same address by their pspace number, keeping |
12108 | locations of the same inferior (in a multi-inferior environment) | |
12109 | grouped. */ | |
12110 | ||
12111 | if (a->pspace->num != b->pspace->num) | |
12112 | return ((a->pspace->num > b->pspace->num) | |
12113 | - (a->pspace->num < b->pspace->num)); | |
12114 | ||
876fa593 JK |
12115 | /* Sort permanent breakpoints first. */ |
12116 | if (a_perm != b_perm) | |
12117 | return (a_perm < b_perm) - (a_perm > b_perm); | |
12118 | ||
c56a97f9 JK |
12119 | /* Make the internal GDB representation stable across GDB runs |
12120 | where A and B memory inside GDB can differ. Breakpoint locations of | |
12121 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
12122 | |
12123 | if (a->owner->number != b->owner->number) | |
c56a97f9 JK |
12124 | return ((a->owner->number > b->owner->number) |
12125 | - (a->owner->number < b->owner->number)); | |
876fa593 JK |
12126 | |
12127 | return (a > b) - (a < b); | |
12128 | } | |
12129 | ||
876fa593 | 12130 | /* Set bp_location_placed_address_before_address_max and |
4a64f543 MS |
12131 | bp_location_shadow_len_after_address_max according to the current |
12132 | content of the bp_location array. */ | |
f7545552 TT |
12133 | |
12134 | static void | |
876fa593 | 12135 | bp_location_target_extensions_update (void) |
f7545552 | 12136 | { |
876fa593 JK |
12137 | struct bp_location *bl, **blp_tmp; |
12138 | ||
12139 | bp_location_placed_address_before_address_max = 0; | |
12140 | bp_location_shadow_len_after_address_max = 0; | |
12141 | ||
12142 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
12143 | { | |
12144 | CORE_ADDR start, end, addr; | |
12145 | ||
12146 | if (!bp_location_has_shadow (bl)) | |
12147 | continue; | |
12148 | ||
12149 | start = bl->target_info.placed_address; | |
12150 | end = start + bl->target_info.shadow_len; | |
12151 | ||
12152 | gdb_assert (bl->address >= start); | |
12153 | addr = bl->address - start; | |
12154 | if (addr > bp_location_placed_address_before_address_max) | |
12155 | bp_location_placed_address_before_address_max = addr; | |
12156 | ||
12157 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
12158 | ||
12159 | gdb_assert (bl->address < end); | |
12160 | addr = end - bl->address; | |
12161 | if (addr > bp_location_shadow_len_after_address_max) | |
12162 | bp_location_shadow_len_after_address_max = addr; | |
12163 | } | |
f7545552 TT |
12164 | } |
12165 | ||
1e4d1764 YQ |
12166 | /* Download tracepoint locations if they haven't been. */ |
12167 | ||
12168 | static void | |
12169 | download_tracepoint_locations (void) | |
12170 | { | |
7ed2c994 | 12171 | struct breakpoint *b; |
1e4d1764 YQ |
12172 | struct cleanup *old_chain; |
12173 | ||
12174 | if (!target_can_download_tracepoint ()) | |
12175 | return; | |
12176 | ||
12177 | old_chain = save_current_space_and_thread (); | |
12178 | ||
7ed2c994 | 12179 | ALL_TRACEPOINTS (b) |
1e4d1764 | 12180 | { |
7ed2c994 | 12181 | struct bp_location *bl; |
1e4d1764 | 12182 | struct tracepoint *t; |
f2a8bc8a | 12183 | int bp_location_downloaded = 0; |
1e4d1764 | 12184 | |
7ed2c994 | 12185 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
12186 | ? !may_insert_fast_tracepoints |
12187 | : !may_insert_tracepoints)) | |
12188 | continue; | |
12189 | ||
7ed2c994 YQ |
12190 | for (bl = b->loc; bl; bl = bl->next) |
12191 | { | |
12192 | /* In tracepoint, locations are _never_ duplicated, so | |
12193 | should_be_inserted is equivalent to | |
12194 | unduplicated_should_be_inserted. */ | |
12195 | if (!should_be_inserted (bl) || bl->inserted) | |
12196 | continue; | |
1e4d1764 | 12197 | |
7ed2c994 | 12198 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 12199 | |
7ed2c994 | 12200 | target_download_tracepoint (bl); |
1e4d1764 | 12201 | |
7ed2c994 | 12202 | bl->inserted = 1; |
f2a8bc8a | 12203 | bp_location_downloaded = 1; |
7ed2c994 YQ |
12204 | } |
12205 | t = (struct tracepoint *) b; | |
12206 | t->number_on_target = b->number; | |
f2a8bc8a YQ |
12207 | if (bp_location_downloaded) |
12208 | observer_notify_breakpoint_modified (b); | |
1e4d1764 YQ |
12209 | } |
12210 | ||
12211 | do_cleanups (old_chain); | |
12212 | } | |
12213 | ||
934709f0 PW |
12214 | /* Swap the insertion/duplication state between two locations. */ |
12215 | ||
12216 | static void | |
12217 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
12218 | { | |
12219 | const int left_inserted = left->inserted; | |
12220 | const int left_duplicate = left->duplicate; | |
b775012e | 12221 | const int left_needs_update = left->needs_update; |
934709f0 PW |
12222 | const struct bp_target_info left_target_info = left->target_info; |
12223 | ||
1e4d1764 YQ |
12224 | /* Locations of tracepoints can never be duplicated. */ |
12225 | if (is_tracepoint (left->owner)) | |
12226 | gdb_assert (!left->duplicate); | |
12227 | if (is_tracepoint (right->owner)) | |
12228 | gdb_assert (!right->duplicate); | |
12229 | ||
934709f0 PW |
12230 | left->inserted = right->inserted; |
12231 | left->duplicate = right->duplicate; | |
b775012e | 12232 | left->needs_update = right->needs_update; |
934709f0 PW |
12233 | left->target_info = right->target_info; |
12234 | right->inserted = left_inserted; | |
12235 | right->duplicate = left_duplicate; | |
b775012e | 12236 | right->needs_update = left_needs_update; |
934709f0 PW |
12237 | right->target_info = left_target_info; |
12238 | } | |
12239 | ||
b775012e LM |
12240 | /* Force the re-insertion of the locations at ADDRESS. This is called |
12241 | once a new/deleted/modified duplicate location is found and we are evaluating | |
12242 | conditions on the target's side. Such conditions need to be updated on | |
12243 | the target. */ | |
12244 | ||
12245 | static void | |
12246 | force_breakpoint_reinsertion (struct bp_location *bl) | |
12247 | { | |
12248 | struct bp_location **locp = NULL, **loc2p; | |
12249 | struct bp_location *loc; | |
12250 | CORE_ADDR address = 0; | |
12251 | int pspace_num; | |
12252 | ||
12253 | address = bl->address; | |
12254 | pspace_num = bl->pspace->num; | |
12255 | ||
12256 | /* This is only meaningful if the target is | |
12257 | evaluating conditions and if the user has | |
12258 | opted for condition evaluation on the target's | |
12259 | side. */ | |
12260 | if (gdb_evaluates_breakpoint_condition_p () | |
12261 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
12262 | return; | |
12263 | ||
12264 | /* Flag all breakpoint locations with this address and | |
12265 | the same program space as the location | |
12266 | as "its condition has changed". We need to | |
12267 | update the conditions on the target's side. */ | |
12268 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
12269 | { | |
12270 | loc = *loc2p; | |
12271 | ||
12272 | if (!is_breakpoint (loc->owner) | |
12273 | || pspace_num != loc->pspace->num) | |
12274 | continue; | |
12275 | ||
12276 | /* Flag the location appropriately. We use a different state to | |
12277 | let everyone know that we already updated the set of locations | |
12278 | with addr bl->address and program space bl->pspace. This is so | |
12279 | we don't have to keep calling these functions just to mark locations | |
12280 | that have already been marked. */ | |
12281 | loc->condition_changed = condition_updated; | |
12282 | ||
12283 | /* Free the agent expression bytecode as well. We will compute | |
12284 | it later on. */ | |
12285 | if (loc->cond_bytecode) | |
12286 | { | |
12287 | free_agent_expr (loc->cond_bytecode); | |
12288 | loc->cond_bytecode = NULL; | |
12289 | } | |
12290 | } | |
12291 | } | |
12292 | ||
4cd9bd08 | 12293 | /* If SHOULD_INSERT is false, do not insert any breakpoint locations |
b60e7edf PA |
12294 | into the inferior, only remove already-inserted locations that no |
12295 | longer should be inserted. Functions that delete a breakpoint or | |
12296 | breakpoints should pass false, so that deleting a breakpoint | |
12297 | doesn't have the side effect of inserting the locations of other | |
12298 | breakpoints that are marked not-inserted, but should_be_inserted | |
12299 | returns true on them. | |
12300 | ||
12301 | This behaviour is useful is situations close to tear-down -- e.g., | |
12302 | after an exec, while the target still has execution, but breakpoint | |
12303 | shadows of the previous executable image should *NOT* be restored | |
12304 | to the new image; or before detaching, where the target still has | |
12305 | execution and wants to delete breakpoints from GDB's lists, and all | |
12306 | breakpoints had already been removed from the inferior. */ | |
12307 | ||
0d381245 | 12308 | static void |
b60e7edf | 12309 | update_global_location_list (int should_insert) |
0d381245 | 12310 | { |
74960c60 | 12311 | struct breakpoint *b; |
876fa593 | 12312 | struct bp_location **locp, *loc; |
f7545552 | 12313 | struct cleanup *cleanups; |
b775012e LM |
12314 | /* Last breakpoint location address that was marked for update. */ |
12315 | CORE_ADDR last_addr = 0; | |
12316 | /* Last breakpoint location program space that was marked for update. */ | |
12317 | int last_pspace_num = -1; | |
f7545552 | 12318 | |
2d134ed3 PA |
12319 | /* Used in the duplicates detection below. When iterating over all |
12320 | bp_locations, points to the first bp_location of a given address. | |
12321 | Breakpoints and watchpoints of different types are never | |
12322 | duplicates of each other. Keep one pointer for each type of | |
12323 | breakpoint/watchpoint, so we only need to loop over all locations | |
12324 | once. */ | |
12325 | struct bp_location *bp_loc_first; /* breakpoint */ | |
12326 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
12327 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
12328 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 12329 | |
4a64f543 MS |
12330 | /* Saved former bp_location array which we compare against the newly |
12331 | built bp_location from the current state of ALL_BREAKPOINTS. */ | |
876fa593 JK |
12332 | struct bp_location **old_location, **old_locp; |
12333 | unsigned old_location_count; | |
12334 | ||
12335 | old_location = bp_location; | |
12336 | old_location_count = bp_location_count; | |
12337 | bp_location = NULL; | |
12338 | bp_location_count = 0; | |
12339 | cleanups = make_cleanup (xfree, old_location); | |
0d381245 | 12340 | |
74960c60 | 12341 | ALL_BREAKPOINTS (b) |
876fa593 JK |
12342 | for (loc = b->loc; loc; loc = loc->next) |
12343 | bp_location_count++; | |
12344 | ||
12345 | bp_location = xmalloc (sizeof (*bp_location) * bp_location_count); | |
12346 | locp = bp_location; | |
12347 | ALL_BREAKPOINTS (b) | |
12348 | for (loc = b->loc; loc; loc = loc->next) | |
12349 | *locp++ = loc; | |
12350 | qsort (bp_location, bp_location_count, sizeof (*bp_location), | |
494cfb0f | 12351 | bp_location_compare); |
876fa593 JK |
12352 | |
12353 | bp_location_target_extensions_update (); | |
74960c60 | 12354 | |
4a64f543 MS |
12355 | /* Identify bp_location instances that are no longer present in the |
12356 | new list, and therefore should be freed. Note that it's not | |
12357 | necessary that those locations should be removed from inferior -- | |
12358 | if there's another location at the same address (previously | |
12359 | marked as duplicate), we don't need to remove/insert the | |
12360 | location. | |
876fa593 | 12361 | |
4a64f543 MS |
12362 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
12363 | and former bp_location array state respectively. */ | |
876fa593 JK |
12364 | |
12365 | locp = bp_location; | |
12366 | for (old_locp = old_location; old_locp < old_location + old_location_count; | |
12367 | old_locp++) | |
74960c60 | 12368 | { |
876fa593 | 12369 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 12370 | struct bp_location **loc2p; |
876fa593 | 12371 | |
e5dd4106 | 12372 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 12373 | not, we have to free it. */ |
c7d46a38 | 12374 | int found_object = 0; |
20874c92 VP |
12375 | /* Tells if the location should remain inserted in the target. */ |
12376 | int keep_in_target = 0; | |
12377 | int removed = 0; | |
876fa593 | 12378 | |
4a64f543 MS |
12379 | /* Skip LOCP entries which will definitely never be needed. |
12380 | Stop either at or being the one matching OLD_LOC. */ | |
876fa593 | 12381 | while (locp < bp_location + bp_location_count |
c7d46a38 | 12382 | && (*locp)->address < old_loc->address) |
876fa593 | 12383 | locp++; |
c7d46a38 PA |
12384 | |
12385 | for (loc2p = locp; | |
12386 | (loc2p < bp_location + bp_location_count | |
12387 | && (*loc2p)->address == old_loc->address); | |
12388 | loc2p++) | |
12389 | { | |
b775012e LM |
12390 | /* Check if this is a new/duplicated location or a duplicated |
12391 | location that had its condition modified. If so, we want to send | |
12392 | its condition to the target if evaluation of conditions is taking | |
12393 | place there. */ | |
12394 | if ((*loc2p)->condition_changed == condition_modified | |
12395 | && (last_addr != old_loc->address | |
12396 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 12397 | { |
b775012e LM |
12398 | force_breakpoint_reinsertion (*loc2p); |
12399 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 12400 | } |
b775012e LM |
12401 | |
12402 | if (*loc2p == old_loc) | |
12403 | found_object = 1; | |
c7d46a38 | 12404 | } |
74960c60 | 12405 | |
b775012e LM |
12406 | /* We have already handled this address, update it so that we don't |
12407 | have to go through updates again. */ | |
12408 | last_addr = old_loc->address; | |
12409 | ||
12410 | /* Target-side condition evaluation: Handle deleted locations. */ | |
12411 | if (!found_object) | |
12412 | force_breakpoint_reinsertion (old_loc); | |
12413 | ||
4a64f543 MS |
12414 | /* If this location is no longer present, and inserted, look if |
12415 | there's maybe a new location at the same address. If so, | |
12416 | mark that one inserted, and don't remove this one. This is | |
12417 | needed so that we don't have a time window where a breakpoint | |
12418 | at certain location is not inserted. */ | |
74960c60 | 12419 | |
876fa593 | 12420 | if (old_loc->inserted) |
0d381245 | 12421 | { |
4a64f543 MS |
12422 | /* If the location is inserted now, we might have to remove |
12423 | it. */ | |
74960c60 | 12424 | |
876fa593 | 12425 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 12426 | { |
4a64f543 MS |
12427 | /* The location is still present in the location list, |
12428 | and still should be inserted. Don't do anything. */ | |
20874c92 | 12429 | keep_in_target = 1; |
74960c60 VP |
12430 | } |
12431 | else | |
12432 | { | |
b775012e LM |
12433 | /* This location still exists, but it won't be kept in the |
12434 | target since it may have been disabled. We proceed to | |
12435 | remove its target-side condition. */ | |
12436 | ||
4a64f543 MS |
12437 | /* The location is either no longer present, or got |
12438 | disabled. See if there's another location at the | |
12439 | same address, in which case we don't need to remove | |
12440 | this one from the target. */ | |
876fa593 | 12441 | |
2bdf28a0 | 12442 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
12443 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
12444 | { | |
876fa593 | 12445 | for (loc2p = locp; |
c7d46a38 PA |
12446 | (loc2p < bp_location + bp_location_count |
12447 | && (*loc2p)->address == old_loc->address); | |
876fa593 JK |
12448 | loc2p++) |
12449 | { | |
12450 | struct bp_location *loc2 = *loc2p; | |
12451 | ||
2d134ed3 | 12452 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 12453 | { |
85d721b8 PA |
12454 | /* Read watchpoint locations are switched to |
12455 | access watchpoints, if the former are not | |
12456 | supported, but the latter are. */ | |
12457 | if (is_hardware_watchpoint (old_loc->owner)) | |
12458 | { | |
12459 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
12460 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
12461 | } | |
12462 | ||
934709f0 PW |
12463 | /* loc2 is a duplicated location. We need to check |
12464 | if it should be inserted in case it will be | |
12465 | unduplicated. */ | |
12466 | if (loc2 != old_loc | |
12467 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 12468 | { |
934709f0 | 12469 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
12470 | keep_in_target = 1; |
12471 | break; | |
12472 | } | |
876fa593 JK |
12473 | } |
12474 | } | |
12475 | } | |
74960c60 VP |
12476 | } |
12477 | ||
20874c92 VP |
12478 | if (!keep_in_target) |
12479 | { | |
876fa593 | 12480 | if (remove_breakpoint (old_loc, mark_uninserted)) |
20874c92 | 12481 | { |
4a64f543 MS |
12482 | /* This is just about all we can do. We could keep |
12483 | this location on the global list, and try to | |
12484 | remove it next time, but there's no particular | |
12485 | reason why we will succeed next time. | |
20874c92 | 12486 | |
4a64f543 MS |
12487 | Note that at this point, old_loc->owner is still |
12488 | valid, as delete_breakpoint frees the breakpoint | |
12489 | only after calling us. */ | |
3e43a32a MS |
12490 | printf_filtered (_("warning: Error removing " |
12491 | "breakpoint %d\n"), | |
876fa593 | 12492 | old_loc->owner->number); |
20874c92 VP |
12493 | } |
12494 | removed = 1; | |
12495 | } | |
0d381245 | 12496 | } |
74960c60 VP |
12497 | |
12498 | if (!found_object) | |
1c5cfe86 | 12499 | { |
db82e815 PA |
12500 | if (removed && non_stop |
12501 | && breakpoint_address_is_meaningful (old_loc->owner) | |
12502 | && !is_hardware_watchpoint (old_loc->owner)) | |
20874c92 | 12503 | { |
db82e815 PA |
12504 | /* This location was removed from the target. In |
12505 | non-stop mode, a race condition is possible where | |
12506 | we've removed a breakpoint, but stop events for that | |
12507 | breakpoint are already queued and will arrive later. | |
12508 | We apply an heuristic to be able to distinguish such | |
12509 | SIGTRAPs from other random SIGTRAPs: we keep this | |
12510 | breakpoint location for a bit, and will retire it | |
12511 | after we see some number of events. The theory here | |
12512 | is that reporting of events should, "on the average", | |
12513 | be fair, so after a while we'll see events from all | |
12514 | threads that have anything of interest, and no longer | |
12515 | need to keep this breakpoint location around. We | |
12516 | don't hold locations forever so to reduce chances of | |
12517 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
12518 | SIGTRAP. | |
12519 | ||
12520 | The heuristic failing can be disastrous on | |
12521 | decr_pc_after_break targets. | |
12522 | ||
12523 | On decr_pc_after_break targets, like e.g., x86-linux, | |
12524 | if we fail to recognize a late breakpoint SIGTRAP, | |
12525 | because events_till_retirement has reached 0 too | |
12526 | soon, we'll fail to do the PC adjustment, and report | |
12527 | a random SIGTRAP to the user. When the user resumes | |
12528 | the inferior, it will most likely immediately crash | |
2dec564e | 12529 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
12530 | corrupted, because of being resumed e.g., in the |
12531 | middle of a multi-byte instruction, or skipped a | |
12532 | one-byte instruction. This was actually seen happen | |
12533 | on native x86-linux, and should be less rare on | |
12534 | targets that do not support new thread events, like | |
12535 | remote, due to the heuristic depending on | |
12536 | thread_count. | |
12537 | ||
12538 | Mistaking a random SIGTRAP for a breakpoint trap | |
12539 | causes similar symptoms (PC adjustment applied when | |
12540 | it shouldn't), but then again, playing with SIGTRAPs | |
12541 | behind the debugger's back is asking for trouble. | |
12542 | ||
12543 | Since hardware watchpoint traps are always | |
12544 | distinguishable from other traps, so we don't need to | |
12545 | apply keep hardware watchpoint moribund locations | |
12546 | around. We simply always ignore hardware watchpoint | |
12547 | traps we can no longer explain. */ | |
12548 | ||
876fa593 JK |
12549 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
12550 | old_loc->owner = NULL; | |
20874c92 | 12551 | |
876fa593 | 12552 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
12553 | } |
12554 | else | |
f431efe5 PA |
12555 | { |
12556 | old_loc->owner = NULL; | |
12557 | decref_bp_location (&old_loc); | |
12558 | } | |
20874c92 | 12559 | } |
74960c60 | 12560 | } |
1c5cfe86 | 12561 | |
348d480f PA |
12562 | /* Rescan breakpoints at the same address and section, marking the |
12563 | first one as "first" and any others as "duplicates". This is so | |
12564 | that the bpt instruction is only inserted once. If we have a | |
12565 | permanent breakpoint at the same place as BPT, make that one the | |
12566 | official one, and the rest as duplicates. Permanent breakpoints | |
12567 | are sorted first for the same address. | |
12568 | ||
12569 | Do the same for hardware watchpoints, but also considering the | |
12570 | watchpoint's type (regular/access/read) and length. */ | |
12571 | ||
12572 | bp_loc_first = NULL; | |
12573 | wp_loc_first = NULL; | |
12574 | awp_loc_first = NULL; | |
12575 | rwp_loc_first = NULL; | |
12576 | ALL_BP_LOCATIONS (loc, locp) | |
12577 | { | |
12578 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
12579 | non-NULL. */ | |
348d480f | 12580 | struct bp_location **loc_first_p; |
d3fbdd86 | 12581 | b = loc->owner; |
348d480f | 12582 | |
6f380991 | 12583 | if (!unduplicated_should_be_inserted (loc) |
348d480f | 12584 | || !breakpoint_address_is_meaningful (b) |
1e4d1764 YQ |
12585 | /* Don't detect duplicate for tracepoint locations because they are |
12586 | never duplicated. See the comments in field `duplicate' of | |
12587 | `struct bp_location'. */ | |
348d480f | 12588 | || is_tracepoint (b)) |
b775012e LM |
12589 | { |
12590 | /* Clear the condition modification flag. */ | |
12591 | loc->condition_changed = condition_unchanged; | |
12592 | continue; | |
12593 | } | |
348d480f PA |
12594 | |
12595 | /* Permanent breakpoint should always be inserted. */ | |
12596 | if (b->enable_state == bp_permanent && ! loc->inserted) | |
12597 | internal_error (__FILE__, __LINE__, | |
12598 | _("allegedly permanent breakpoint is not " | |
12599 | "actually inserted")); | |
12600 | ||
12601 | if (b->type == bp_hardware_watchpoint) | |
12602 | loc_first_p = &wp_loc_first; | |
12603 | else if (b->type == bp_read_watchpoint) | |
12604 | loc_first_p = &rwp_loc_first; | |
12605 | else if (b->type == bp_access_watchpoint) | |
12606 | loc_first_p = &awp_loc_first; | |
12607 | else | |
12608 | loc_first_p = &bp_loc_first; | |
12609 | ||
12610 | if (*loc_first_p == NULL | |
12611 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
12612 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
12613 | { | |
12614 | *loc_first_p = loc; | |
12615 | loc->duplicate = 0; | |
b775012e LM |
12616 | |
12617 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
12618 | { | |
12619 | loc->needs_update = 1; | |
12620 | /* Clear the condition modification flag. */ | |
12621 | loc->condition_changed = condition_unchanged; | |
12622 | } | |
348d480f PA |
12623 | continue; |
12624 | } | |
12625 | ||
934709f0 PW |
12626 | |
12627 | /* This and the above ensure the invariant that the first location | |
12628 | is not duplicated, and is the inserted one. | |
12629 | All following are marked as duplicated, and are not inserted. */ | |
12630 | if (loc->inserted) | |
12631 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
12632 | loc->duplicate = 1; |
12633 | ||
b775012e LM |
12634 | /* Clear the condition modification flag. */ |
12635 | loc->condition_changed = condition_unchanged; | |
12636 | ||
348d480f PA |
12637 | if ((*loc_first_p)->owner->enable_state == bp_permanent && loc->inserted |
12638 | && b->enable_state != bp_permanent) | |
12639 | internal_error (__FILE__, __LINE__, | |
12640 | _("another breakpoint was inserted on top of " | |
12641 | "a permanent breakpoint")); | |
12642 | } | |
12643 | ||
b775012e | 12644 | if (breakpoints_always_inserted_mode () |
348d480f | 12645 | && (have_live_inferiors () |
f5656ead | 12646 | || (gdbarch_has_global_breakpoints (target_gdbarch ())))) |
b775012e LM |
12647 | { |
12648 | if (should_insert) | |
12649 | insert_breakpoint_locations (); | |
12650 | else | |
12651 | { | |
12652 | /* Though should_insert is false, we may need to update conditions | |
12653 | on the target's side if it is evaluating such conditions. We | |
12654 | only update conditions for locations that are marked | |
12655 | "needs_update". */ | |
12656 | update_inserted_breakpoint_locations (); | |
12657 | } | |
12658 | } | |
348d480f | 12659 | |
1e4d1764 YQ |
12660 | if (should_insert) |
12661 | download_tracepoint_locations (); | |
12662 | ||
348d480f PA |
12663 | do_cleanups (cleanups); |
12664 | } | |
12665 | ||
12666 | void | |
12667 | breakpoint_retire_moribund (void) | |
12668 | { | |
12669 | struct bp_location *loc; | |
12670 | int ix; | |
12671 | ||
12672 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
12673 | if (--(loc->events_till_retirement) == 0) | |
12674 | { | |
12675 | decref_bp_location (&loc); | |
12676 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
12677 | --ix; | |
12678 | } | |
12679 | } | |
12680 | ||
12681 | static void | |
12682 | update_global_location_list_nothrow (int inserting) | |
12683 | { | |
bfd189b1 | 12684 | volatile struct gdb_exception e; |
348d480f PA |
12685 | |
12686 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
12687 | update_global_location_list (inserting); | |
12688 | } | |
12689 | ||
12690 | /* Clear BKP from a BPS. */ | |
12691 | ||
12692 | static void | |
12693 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12694 | { | |
12695 | bpstat bs; | |
12696 | ||
12697 | for (bs = bps; bs; bs = bs->next) | |
12698 | if (bs->breakpoint_at == bpt) | |
12699 | { | |
12700 | bs->breakpoint_at = NULL; | |
12701 | bs->old_val = NULL; | |
12702 | /* bs->commands will be freed later. */ | |
12703 | } | |
12704 | } | |
12705 | ||
12706 | /* Callback for iterate_over_threads. */ | |
12707 | static int | |
12708 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12709 | { | |
12710 | struct breakpoint *bpt = data; | |
12711 | ||
12712 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12713 | return 0; | |
12714 | } | |
12715 | ||
12716 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12717 | callbacks. */ | |
12718 | ||
12719 | static void | |
12720 | say_where (struct breakpoint *b) | |
12721 | { | |
79a45e25 | 12722 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12723 | struct value_print_options opts; |
12724 | ||
12725 | get_user_print_options (&opts); | |
12726 | ||
12727 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12728 | single string. */ | |
12729 | if (b->loc == NULL) | |
12730 | { | |
12731 | printf_filtered (_(" (%s) pending."), b->addr_string); | |
12732 | } | |
12733 | else | |
12734 | { | |
2f202fde | 12735 | if (opts.addressprint || b->loc->symtab == NULL) |
348d480f PA |
12736 | { |
12737 | printf_filtered (" at "); | |
12738 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), | |
12739 | gdb_stdout); | |
12740 | } | |
2f202fde | 12741 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
12742 | { |
12743 | /* If there is a single location, we can print the location | |
12744 | more nicely. */ | |
12745 | if (b->loc->next == NULL) | |
12746 | printf_filtered (": file %s, line %d.", | |
05cba821 JK |
12747 | symtab_to_filename_for_display (b->loc->symtab), |
12748 | b->loc->line_number); | |
f8eba3c6 TT |
12749 | else |
12750 | /* This is not ideal, but each location may have a | |
12751 | different file name, and this at least reflects the | |
12752 | real situation somewhat. */ | |
12753 | printf_filtered (": %s.", b->addr_string); | |
12754 | } | |
348d480f PA |
12755 | |
12756 | if (b->loc->next) | |
12757 | { | |
12758 | struct bp_location *loc = b->loc; | |
12759 | int n = 0; | |
12760 | for (; loc; loc = loc->next) | |
12761 | ++n; | |
12762 | printf_filtered (" (%d locations)", n); | |
12763 | } | |
12764 | } | |
12765 | } | |
12766 | ||
348d480f PA |
12767 | /* Default bp_location_ops methods. */ |
12768 | ||
12769 | static void | |
12770 | bp_location_dtor (struct bp_location *self) | |
12771 | { | |
12772 | xfree (self->cond); | |
b775012e LM |
12773 | if (self->cond_bytecode) |
12774 | free_agent_expr (self->cond_bytecode); | |
348d480f PA |
12775 | xfree (self->function_name); |
12776 | } | |
12777 | ||
12778 | static const struct bp_location_ops bp_location_ops = | |
12779 | { | |
12780 | bp_location_dtor | |
12781 | }; | |
12782 | ||
2060206e PA |
12783 | /* Default breakpoint_ops methods all breakpoint_ops ultimately |
12784 | inherit from. */ | |
348d480f | 12785 | |
2060206e PA |
12786 | static void |
12787 | base_breakpoint_dtor (struct breakpoint *self) | |
348d480f PA |
12788 | { |
12789 | decref_counted_command_line (&self->commands); | |
12790 | xfree (self->cond_string); | |
fb81d016 | 12791 | xfree (self->extra_string); |
348d480f | 12792 | xfree (self->addr_string); |
f8eba3c6 | 12793 | xfree (self->filter); |
348d480f | 12794 | xfree (self->addr_string_range_end); |
348d480f PA |
12795 | } |
12796 | ||
2060206e PA |
12797 | static struct bp_location * |
12798 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f PA |
12799 | { |
12800 | struct bp_location *loc; | |
12801 | ||
12802 | loc = XNEW (struct bp_location); | |
12803 | init_bp_location (loc, &bp_location_ops, self); | |
12804 | return loc; | |
12805 | } | |
12806 | ||
2060206e PA |
12807 | static void |
12808 | base_breakpoint_re_set (struct breakpoint *b) | |
12809 | { | |
12810 | /* Nothing to re-set. */ | |
12811 | } | |
12812 | ||
12813 | #define internal_error_pure_virtual_called() \ | |
12814 | gdb_assert_not_reached ("pure virtual function called") | |
12815 | ||
12816 | static int | |
12817 | base_breakpoint_insert_location (struct bp_location *bl) | |
12818 | { | |
12819 | internal_error_pure_virtual_called (); | |
12820 | } | |
12821 | ||
12822 | static int | |
12823 | base_breakpoint_remove_location (struct bp_location *bl) | |
12824 | { | |
12825 | internal_error_pure_virtual_called (); | |
12826 | } | |
12827 | ||
12828 | static int | |
12829 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
12830 | struct address_space *aspace, | |
09ac7c10 TT |
12831 | CORE_ADDR bp_addr, |
12832 | const struct target_waitstatus *ws) | |
2060206e PA |
12833 | { |
12834 | internal_error_pure_virtual_called (); | |
12835 | } | |
12836 | ||
12837 | static void | |
12838 | base_breakpoint_check_status (bpstat bs) | |
12839 | { | |
12840 | /* Always stop. */ | |
12841 | } | |
12842 | ||
12843 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12844 | errors. */ | |
12845 | ||
12846 | static int | |
12847 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12848 | { | |
12849 | internal_error_pure_virtual_called (); | |
12850 | } | |
12851 | ||
12852 | /* A "resources_needed" breakpoint_ops method that just internal | |
12853 | errors. */ | |
12854 | ||
12855 | static int | |
12856 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12857 | { | |
12858 | internal_error_pure_virtual_called (); | |
12859 | } | |
12860 | ||
12861 | static enum print_stop_action | |
12862 | base_breakpoint_print_it (bpstat bs) | |
12863 | { | |
12864 | internal_error_pure_virtual_called (); | |
12865 | } | |
12866 | ||
12867 | static void | |
12868 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12869 | struct ui_out *uiout) | |
12870 | { | |
12871 | /* nothing */ | |
12872 | } | |
12873 | ||
12874 | static void | |
12875 | base_breakpoint_print_mention (struct breakpoint *b) | |
12876 | { | |
12877 | internal_error_pure_virtual_called (); | |
12878 | } | |
12879 | ||
12880 | static void | |
12881 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12882 | { | |
12883 | internal_error_pure_virtual_called (); | |
12884 | } | |
12885 | ||
983af33b SDJ |
12886 | static void |
12887 | base_breakpoint_create_sals_from_address (char **arg, | |
12888 | struct linespec_result *canonical, | |
12889 | enum bptype type_wanted, | |
12890 | char *addr_start, | |
12891 | char **copy_arg) | |
12892 | { | |
12893 | internal_error_pure_virtual_called (); | |
12894 | } | |
12895 | ||
12896 | static void | |
12897 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12898 | struct linespec_result *c, | |
12899 | struct linespec_sals *lsal, | |
12900 | char *cond_string, | |
e7e0cddf | 12901 | char *extra_string, |
983af33b SDJ |
12902 | enum bptype type_wanted, |
12903 | enum bpdisp disposition, | |
12904 | int thread, | |
12905 | int task, int ignore_count, | |
12906 | const struct breakpoint_ops *o, | |
12907 | int from_tty, int enabled, | |
44f238bb | 12908 | int internal, unsigned flags) |
983af33b SDJ |
12909 | { |
12910 | internal_error_pure_virtual_called (); | |
12911 | } | |
12912 | ||
12913 | static void | |
12914 | base_breakpoint_decode_linespec (struct breakpoint *b, char **s, | |
12915 | struct symtabs_and_lines *sals) | |
12916 | { | |
12917 | internal_error_pure_virtual_called (); | |
12918 | } | |
12919 | ||
ab04a2af TT |
12920 | /* The default 'explains_signal' method. */ |
12921 | ||
12922 | static enum bpstat_signal_value | |
12923 | base_breakpoint_explains_signal (struct breakpoint *b) | |
12924 | { | |
12925 | return BPSTAT_SIGNAL_HIDE; | |
12926 | } | |
12927 | ||
12928 | struct breakpoint_ops base_breakpoint_ops = | |
2060206e PA |
12929 | { |
12930 | base_breakpoint_dtor, | |
12931 | base_breakpoint_allocate_location, | |
12932 | base_breakpoint_re_set, | |
12933 | base_breakpoint_insert_location, | |
12934 | base_breakpoint_remove_location, | |
12935 | base_breakpoint_breakpoint_hit, | |
12936 | base_breakpoint_check_status, | |
12937 | base_breakpoint_resources_needed, | |
12938 | base_breakpoint_works_in_software_mode, | |
12939 | base_breakpoint_print_it, | |
12940 | NULL, | |
12941 | base_breakpoint_print_one_detail, | |
12942 | base_breakpoint_print_mention, | |
983af33b SDJ |
12943 | base_breakpoint_print_recreate, |
12944 | base_breakpoint_create_sals_from_address, | |
12945 | base_breakpoint_create_breakpoints_sal, | |
12946 | base_breakpoint_decode_linespec, | |
ab04a2af | 12947 | base_breakpoint_explains_signal |
2060206e PA |
12948 | }; |
12949 | ||
12950 | /* Default breakpoint_ops methods. */ | |
12951 | ||
12952 | static void | |
348d480f PA |
12953 | bkpt_re_set (struct breakpoint *b) |
12954 | { | |
06edf0c0 PA |
12955 | /* FIXME: is this still reachable? */ |
12956 | if (b->addr_string == NULL) | |
12957 | { | |
12958 | /* Anything without a string can't be re-set. */ | |
348d480f | 12959 | delete_breakpoint (b); |
06edf0c0 | 12960 | return; |
348d480f | 12961 | } |
06edf0c0 PA |
12962 | |
12963 | breakpoint_re_set_default (b); | |
348d480f PA |
12964 | } |
12965 | ||
2060206e | 12966 | static int |
348d480f PA |
12967 | bkpt_insert_location (struct bp_location *bl) |
12968 | { | |
12969 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12970 | return target_insert_hw_breakpoint (bl->gdbarch, | |
12971 | &bl->target_info); | |
12972 | else | |
12973 | return target_insert_breakpoint (bl->gdbarch, | |
12974 | &bl->target_info); | |
12975 | } | |
12976 | ||
2060206e | 12977 | static int |
348d480f PA |
12978 | bkpt_remove_location (struct bp_location *bl) |
12979 | { | |
12980 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12981 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12982 | else | |
12983 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info); | |
12984 | } | |
12985 | ||
2060206e | 12986 | static int |
348d480f | 12987 | bkpt_breakpoint_hit (const struct bp_location *bl, |
09ac7c10 TT |
12988 | struct address_space *aspace, CORE_ADDR bp_addr, |
12989 | const struct target_waitstatus *ws) | |
348d480f PA |
12990 | { |
12991 | struct breakpoint *b = bl->owner; | |
12992 | ||
09ac7c10 | 12993 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12994 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12995 | return 0; |
12996 | ||
348d480f PA |
12997 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12998 | aspace, bp_addr)) | |
12999 | return 0; | |
13000 | ||
13001 | if (overlay_debugging /* unmapped overlay section */ | |
13002 | && section_is_overlay (bl->section) | |
13003 | && !section_is_mapped (bl->section)) | |
13004 | return 0; | |
13005 | ||
13006 | return 1; | |
13007 | } | |
13008 | ||
2060206e | 13009 | static int |
348d480f PA |
13010 | bkpt_resources_needed (const struct bp_location *bl) |
13011 | { | |
13012 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
13013 | ||
13014 | return 1; | |
13015 | } | |
13016 | ||
2060206e | 13017 | static enum print_stop_action |
348d480f PA |
13018 | bkpt_print_it (bpstat bs) |
13019 | { | |
348d480f PA |
13020 | struct breakpoint *b; |
13021 | const struct bp_location *bl; | |
001c8c33 | 13022 | int bp_temp; |
79a45e25 | 13023 | struct ui_out *uiout = current_uiout; |
348d480f PA |
13024 | |
13025 | gdb_assert (bs->bp_location_at != NULL); | |
13026 | ||
13027 | bl = bs->bp_location_at; | |
13028 | b = bs->breakpoint_at; | |
13029 | ||
001c8c33 PA |
13030 | bp_temp = b->disposition == disp_del; |
13031 | if (bl->address != bl->requested_address) | |
13032 | breakpoint_adjustment_warning (bl->requested_address, | |
13033 | bl->address, | |
13034 | b->number, 1); | |
13035 | annotate_breakpoint (b->number); | |
13036 | if (bp_temp) | |
13037 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
13038 | else | |
13039 | ui_out_text (uiout, "\nBreakpoint "); | |
13040 | if (ui_out_is_mi_like_p (uiout)) | |
348d480f | 13041 | { |
001c8c33 PA |
13042 | ui_out_field_string (uiout, "reason", |
13043 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
13044 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
06edf0c0 | 13045 | } |
001c8c33 PA |
13046 | ui_out_field_int (uiout, "bkptno", b->number); |
13047 | ui_out_text (uiout, ", "); | |
06edf0c0 | 13048 | |
001c8c33 | 13049 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
13050 | } |
13051 | ||
2060206e | 13052 | static void |
06edf0c0 PA |
13053 | bkpt_print_mention (struct breakpoint *b) |
13054 | { | |
79a45e25 | 13055 | if (ui_out_is_mi_like_p (current_uiout)) |
06edf0c0 PA |
13056 | return; |
13057 | ||
13058 | switch (b->type) | |
13059 | { | |
13060 | case bp_breakpoint: | |
13061 | case bp_gnu_ifunc_resolver: | |
13062 | if (b->disposition == disp_del) | |
13063 | printf_filtered (_("Temporary breakpoint")); | |
13064 | else | |
13065 | printf_filtered (_("Breakpoint")); | |
13066 | printf_filtered (_(" %d"), b->number); | |
13067 | if (b->type == bp_gnu_ifunc_resolver) | |
13068 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
13069 | break; | |
13070 | case bp_hardware_breakpoint: | |
13071 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
13072 | break; | |
e7e0cddf SS |
13073 | case bp_dprintf: |
13074 | printf_filtered (_("Dprintf %d"), b->number); | |
13075 | break; | |
06edf0c0 PA |
13076 | } |
13077 | ||
13078 | say_where (b); | |
13079 | } | |
13080 | ||
2060206e | 13081 | static void |
06edf0c0 PA |
13082 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
13083 | { | |
13084 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
13085 | fprintf_unfiltered (fp, "tbreak"); | |
13086 | else if (tp->type == bp_breakpoint) | |
13087 | fprintf_unfiltered (fp, "break"); | |
13088 | else if (tp->type == bp_hardware_breakpoint | |
13089 | && tp->disposition == disp_del) | |
13090 | fprintf_unfiltered (fp, "thbreak"); | |
13091 | else if (tp->type == bp_hardware_breakpoint) | |
13092 | fprintf_unfiltered (fp, "hbreak"); | |
13093 | else | |
13094 | internal_error (__FILE__, __LINE__, | |
13095 | _("unhandled breakpoint type %d"), (int) tp->type); | |
13096 | ||
2060206e | 13097 | fprintf_unfiltered (fp, " %s", tp->addr_string); |
dd11a36c | 13098 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
13099 | } |
13100 | ||
983af33b SDJ |
13101 | static void |
13102 | bkpt_create_sals_from_address (char **arg, | |
13103 | struct linespec_result *canonical, | |
13104 | enum bptype type_wanted, | |
13105 | char *addr_start, char **copy_arg) | |
13106 | { | |
13107 | create_sals_from_address_default (arg, canonical, type_wanted, | |
13108 | addr_start, copy_arg); | |
13109 | } | |
13110 | ||
13111 | static void | |
13112 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13113 | struct linespec_result *canonical, | |
13114 | struct linespec_sals *lsal, | |
13115 | char *cond_string, | |
e7e0cddf | 13116 | char *extra_string, |
983af33b SDJ |
13117 | enum bptype type_wanted, |
13118 | enum bpdisp disposition, | |
13119 | int thread, | |
13120 | int task, int ignore_count, | |
13121 | const struct breakpoint_ops *ops, | |
13122 | int from_tty, int enabled, | |
44f238bb | 13123 | int internal, unsigned flags) |
983af33b SDJ |
13124 | { |
13125 | create_breakpoints_sal_default (gdbarch, canonical, lsal, | |
e7e0cddf SS |
13126 | cond_string, extra_string, |
13127 | type_wanted, | |
983af33b SDJ |
13128 | disposition, thread, task, |
13129 | ignore_count, ops, from_tty, | |
44f238bb | 13130 | enabled, internal, flags); |
983af33b SDJ |
13131 | } |
13132 | ||
13133 | static void | |
13134 | bkpt_decode_linespec (struct breakpoint *b, char **s, | |
13135 | struct symtabs_and_lines *sals) | |
13136 | { | |
13137 | decode_linespec_default (b, s, sals); | |
13138 | } | |
13139 | ||
06edf0c0 PA |
13140 | /* Virtual table for internal breakpoints. */ |
13141 | ||
13142 | static void | |
13143 | internal_bkpt_re_set (struct breakpoint *b) | |
13144 | { | |
13145 | switch (b->type) | |
13146 | { | |
13147 | /* Delete overlay event and longjmp master breakpoints; they | |
13148 | will be reset later by breakpoint_re_set. */ | |
13149 | case bp_overlay_event: | |
13150 | case bp_longjmp_master: | |
13151 | case bp_std_terminate_master: | |
13152 | case bp_exception_master: | |
13153 | delete_breakpoint (b); | |
13154 | break; | |
13155 | ||
13156 | /* This breakpoint is special, it's set up when the inferior | |
13157 | starts and we really don't want to touch it. */ | |
13158 | case bp_shlib_event: | |
13159 | ||
13160 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
13161 | it is set up, we do not want to touch it. */ | |
13162 | case bp_thread_event: | |
13163 | break; | |
13164 | } | |
13165 | } | |
13166 | ||
13167 | static void | |
13168 | internal_bkpt_check_status (bpstat bs) | |
13169 | { | |
a9b3a50f PA |
13170 | if (bs->breakpoint_at->type == bp_shlib_event) |
13171 | { | |
13172 | /* If requested, stop when the dynamic linker notifies GDB of | |
13173 | events. This allows the user to get control and place | |
13174 | breakpoints in initializer routines for dynamically loaded | |
13175 | objects (among other things). */ | |
13176 | bs->stop = stop_on_solib_events; | |
13177 | bs->print = stop_on_solib_events; | |
13178 | } | |
13179 | else | |
13180 | bs->stop = 0; | |
06edf0c0 PA |
13181 | } |
13182 | ||
13183 | static enum print_stop_action | |
13184 | internal_bkpt_print_it (bpstat bs) | |
13185 | { | |
36dfb11c | 13186 | struct ui_out *uiout = current_uiout; |
06edf0c0 | 13187 | struct breakpoint *b; |
06edf0c0 | 13188 | |
06edf0c0 PA |
13189 | b = bs->breakpoint_at; |
13190 | ||
06edf0c0 PA |
13191 | switch (b->type) |
13192 | { | |
348d480f PA |
13193 | case bp_shlib_event: |
13194 | /* Did we stop because the user set the stop_on_solib_events | |
13195 | variable? (If so, we report this as a generic, "Stopped due | |
13196 | to shlib event" message.) */ | |
edcc5120 | 13197 | print_solib_event (0); |
348d480f PA |
13198 | break; |
13199 | ||
13200 | case bp_thread_event: | |
13201 | /* Not sure how we will get here. | |
13202 | GDB should not stop for these breakpoints. */ | |
13203 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13204 | break; |
13205 | ||
13206 | case bp_overlay_event: | |
13207 | /* By analogy with the thread event, GDB should not stop for these. */ | |
13208 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13209 | break; |
13210 | ||
13211 | case bp_longjmp_master: | |
13212 | /* These should never be enabled. */ | |
13213 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13214 | break; |
13215 | ||
13216 | case bp_std_terminate_master: | |
13217 | /* These should never be enabled. */ | |
13218 | printf_filtered (_("std::terminate Master Breakpoint: " | |
13219 | "gdb should not stop!\n")); | |
348d480f PA |
13220 | break; |
13221 | ||
13222 | case bp_exception_master: | |
13223 | /* These should never be enabled. */ | |
13224 | printf_filtered (_("Exception Master Breakpoint: " | |
13225 | "gdb should not stop!\n")); | |
06edf0c0 PA |
13226 | break; |
13227 | } | |
13228 | ||
001c8c33 | 13229 | return PRINT_NOTHING; |
06edf0c0 PA |
13230 | } |
13231 | ||
13232 | static void | |
13233 | internal_bkpt_print_mention (struct breakpoint *b) | |
13234 | { | |
13235 | /* Nothing to mention. These breakpoints are internal. */ | |
13236 | } | |
13237 | ||
06edf0c0 PA |
13238 | /* Virtual table for momentary breakpoints */ |
13239 | ||
13240 | static void | |
13241 | momentary_bkpt_re_set (struct breakpoint *b) | |
13242 | { | |
13243 | /* Keep temporary breakpoints, which can be encountered when we step | |
13244 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
13245 | Otherwise these should have been blown away via the cleanup chain | |
13246 | or by breakpoint_init_inferior when we rerun the executable. */ | |
13247 | } | |
13248 | ||
13249 | static void | |
13250 | momentary_bkpt_check_status (bpstat bs) | |
13251 | { | |
13252 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
13253 | } | |
13254 | ||
13255 | static enum print_stop_action | |
13256 | momentary_bkpt_print_it (bpstat bs) | |
13257 | { | |
79a45e25 PA |
13258 | struct ui_out *uiout = current_uiout; |
13259 | ||
001c8c33 | 13260 | if (ui_out_is_mi_like_p (uiout)) |
06edf0c0 | 13261 | { |
001c8c33 | 13262 | struct breakpoint *b = bs->breakpoint_at; |
348d480f | 13263 | |
001c8c33 PA |
13264 | switch (b->type) |
13265 | { | |
13266 | case bp_finish: | |
13267 | ui_out_field_string | |
13268 | (uiout, "reason", | |
13269 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
13270 | break; | |
348d480f | 13271 | |
001c8c33 PA |
13272 | case bp_until: |
13273 | ui_out_field_string | |
13274 | (uiout, "reason", | |
13275 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
13276 | break; | |
13277 | } | |
348d480f PA |
13278 | } |
13279 | ||
001c8c33 | 13280 | return PRINT_UNKNOWN; |
348d480f PA |
13281 | } |
13282 | ||
06edf0c0 PA |
13283 | static void |
13284 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 13285 | { |
06edf0c0 | 13286 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
13287 | } |
13288 | ||
e2e4d78b JK |
13289 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
13290 | ||
13291 | It gets cleared already on the removal of the first one of such placed | |
13292 | breakpoints. This is OK as they get all removed altogether. */ | |
13293 | ||
13294 | static void | |
13295 | longjmp_bkpt_dtor (struct breakpoint *self) | |
13296 | { | |
13297 | struct thread_info *tp = find_thread_id (self->thread); | |
13298 | ||
13299 | if (tp) | |
13300 | tp->initiating_frame = null_frame_id; | |
13301 | ||
13302 | momentary_breakpoint_ops.dtor (self); | |
13303 | } | |
13304 | ||
55aa24fb SDJ |
13305 | /* Specific methods for probe breakpoints. */ |
13306 | ||
13307 | static int | |
13308 | bkpt_probe_insert_location (struct bp_location *bl) | |
13309 | { | |
13310 | int v = bkpt_insert_location (bl); | |
13311 | ||
13312 | if (v == 0) | |
13313 | { | |
13314 | /* The insertion was successful, now let's set the probe's semaphore | |
13315 | if needed. */ | |
13316 | bl->probe->pops->set_semaphore (bl->probe, bl->gdbarch); | |
13317 | } | |
13318 | ||
13319 | return v; | |
13320 | } | |
13321 | ||
13322 | static int | |
13323 | bkpt_probe_remove_location (struct bp_location *bl) | |
13324 | { | |
13325 | /* Let's clear the semaphore before removing the location. */ | |
13326 | bl->probe->pops->clear_semaphore (bl->probe, bl->gdbarch); | |
13327 | ||
13328 | return bkpt_remove_location (bl); | |
13329 | } | |
13330 | ||
13331 | static void | |
13332 | bkpt_probe_create_sals_from_address (char **arg, | |
13333 | struct linespec_result *canonical, | |
13334 | enum bptype type_wanted, | |
13335 | char *addr_start, char **copy_arg) | |
13336 | { | |
13337 | struct linespec_sals lsal; | |
13338 | ||
13339 | lsal.sals = parse_probes (arg, canonical); | |
13340 | ||
13341 | *copy_arg = xstrdup (canonical->addr_string); | |
13342 | lsal.canonical = xstrdup (*copy_arg); | |
13343 | ||
13344 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
13345 | } | |
13346 | ||
13347 | static void | |
13348 | bkpt_probe_decode_linespec (struct breakpoint *b, char **s, | |
13349 | struct symtabs_and_lines *sals) | |
13350 | { | |
13351 | *sals = parse_probes (s, NULL); | |
13352 | if (!sals->sals) | |
13353 | error (_("probe not found")); | |
13354 | } | |
13355 | ||
348d480f | 13356 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 13357 | |
348d480f PA |
13358 | static void |
13359 | tracepoint_re_set (struct breakpoint *b) | |
13360 | { | |
13361 | breakpoint_re_set_default (b); | |
13362 | } | |
876fa593 | 13363 | |
348d480f PA |
13364 | static int |
13365 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
09ac7c10 TT |
13366 | struct address_space *aspace, CORE_ADDR bp_addr, |
13367 | const struct target_waitstatus *ws) | |
348d480f PA |
13368 | { |
13369 | /* By definition, the inferior does not report stops at | |
13370 | tracepoints. */ | |
13371 | return 0; | |
74960c60 VP |
13372 | } |
13373 | ||
13374 | static void | |
348d480f PA |
13375 | tracepoint_print_one_detail (const struct breakpoint *self, |
13376 | struct ui_out *uiout) | |
74960c60 | 13377 | { |
d9b3f62e PA |
13378 | struct tracepoint *tp = (struct tracepoint *) self; |
13379 | if (tp->static_trace_marker_id) | |
348d480f PA |
13380 | { |
13381 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 13382 | |
348d480f PA |
13383 | ui_out_text (uiout, "\tmarker id is "); |
13384 | ui_out_field_string (uiout, "static-tracepoint-marker-string-id", | |
d9b3f62e | 13385 | tp->static_trace_marker_id); |
348d480f PA |
13386 | ui_out_text (uiout, "\n"); |
13387 | } | |
0d381245 VP |
13388 | } |
13389 | ||
a474d7c2 | 13390 | static void |
348d480f | 13391 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 13392 | { |
79a45e25 | 13393 | if (ui_out_is_mi_like_p (current_uiout)) |
348d480f | 13394 | return; |
cc59ec59 | 13395 | |
348d480f PA |
13396 | switch (b->type) |
13397 | { | |
13398 | case bp_tracepoint: | |
13399 | printf_filtered (_("Tracepoint")); | |
13400 | printf_filtered (_(" %d"), b->number); | |
13401 | break; | |
13402 | case bp_fast_tracepoint: | |
13403 | printf_filtered (_("Fast tracepoint")); | |
13404 | printf_filtered (_(" %d"), b->number); | |
13405 | break; | |
13406 | case bp_static_tracepoint: | |
13407 | printf_filtered (_("Static tracepoint")); | |
13408 | printf_filtered (_(" %d"), b->number); | |
13409 | break; | |
13410 | default: | |
13411 | internal_error (__FILE__, __LINE__, | |
13412 | _("unhandled tracepoint type %d"), (int) b->type); | |
13413 | } | |
13414 | ||
13415 | say_where (b); | |
a474d7c2 PA |
13416 | } |
13417 | ||
348d480f | 13418 | static void |
d9b3f62e | 13419 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 13420 | { |
d9b3f62e PA |
13421 | struct tracepoint *tp = (struct tracepoint *) self; |
13422 | ||
13423 | if (self->type == bp_fast_tracepoint) | |
348d480f | 13424 | fprintf_unfiltered (fp, "ftrace"); |
d9b3f62e | 13425 | if (self->type == bp_static_tracepoint) |
348d480f | 13426 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 13427 | else if (self->type == bp_tracepoint) |
348d480f PA |
13428 | fprintf_unfiltered (fp, "trace"); |
13429 | else | |
13430 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 13431 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 13432 | |
d9b3f62e PA |
13433 | fprintf_unfiltered (fp, " %s", self->addr_string); |
13434 | print_recreate_thread (self, fp); | |
13435 | ||
13436 | if (tp->pass_count) | |
13437 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
13438 | } |
13439 | ||
983af33b SDJ |
13440 | static void |
13441 | tracepoint_create_sals_from_address (char **arg, | |
13442 | struct linespec_result *canonical, | |
13443 | enum bptype type_wanted, | |
13444 | char *addr_start, char **copy_arg) | |
13445 | { | |
13446 | create_sals_from_address_default (arg, canonical, type_wanted, | |
13447 | addr_start, copy_arg); | |
13448 | } | |
13449 | ||
13450 | static void | |
13451 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13452 | struct linespec_result *canonical, | |
13453 | struct linespec_sals *lsal, | |
13454 | char *cond_string, | |
e7e0cddf | 13455 | char *extra_string, |
983af33b SDJ |
13456 | enum bptype type_wanted, |
13457 | enum bpdisp disposition, | |
13458 | int thread, | |
13459 | int task, int ignore_count, | |
13460 | const struct breakpoint_ops *ops, | |
13461 | int from_tty, int enabled, | |
44f238bb | 13462 | int internal, unsigned flags) |
983af33b SDJ |
13463 | { |
13464 | create_breakpoints_sal_default (gdbarch, canonical, lsal, | |
e7e0cddf SS |
13465 | cond_string, extra_string, |
13466 | type_wanted, | |
983af33b SDJ |
13467 | disposition, thread, task, |
13468 | ignore_count, ops, from_tty, | |
44f238bb | 13469 | enabled, internal, flags); |
983af33b SDJ |
13470 | } |
13471 | ||
13472 | static void | |
13473 | tracepoint_decode_linespec (struct breakpoint *b, char **s, | |
13474 | struct symtabs_and_lines *sals) | |
13475 | { | |
13476 | decode_linespec_default (b, s, sals); | |
13477 | } | |
13478 | ||
2060206e | 13479 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 13480 | |
55aa24fb SDJ |
13481 | /* The breakpoint_ops structure to be use on tracepoints placed in a |
13482 | static probe. */ | |
13483 | ||
13484 | static void | |
13485 | tracepoint_probe_create_sals_from_address (char **arg, | |
13486 | struct linespec_result *canonical, | |
13487 | enum bptype type_wanted, | |
13488 | char *addr_start, char **copy_arg) | |
13489 | { | |
13490 | /* We use the same method for breakpoint on probes. */ | |
13491 | bkpt_probe_create_sals_from_address (arg, canonical, type_wanted, | |
13492 | addr_start, copy_arg); | |
13493 | } | |
13494 | ||
13495 | static void | |
13496 | tracepoint_probe_decode_linespec (struct breakpoint *b, char **s, | |
13497 | struct symtabs_and_lines *sals) | |
13498 | { | |
13499 | /* We use the same method for breakpoint on probes. */ | |
13500 | bkpt_probe_decode_linespec (b, s, sals); | |
13501 | } | |
13502 | ||
13503 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
13504 | ||
983af33b SDJ |
13505 | /* The breakpoint_ops structure to be used on static tracepoints with |
13506 | markers (`-m'). */ | |
13507 | ||
13508 | static void | |
13509 | strace_marker_create_sals_from_address (char **arg, | |
13510 | struct linespec_result *canonical, | |
13511 | enum bptype type_wanted, | |
13512 | char *addr_start, char **copy_arg) | |
13513 | { | |
13514 | struct linespec_sals lsal; | |
13515 | ||
13516 | lsal.sals = decode_static_tracepoint_spec (arg); | |
13517 | ||
13518 | *copy_arg = savestring (addr_start, *arg - addr_start); | |
13519 | ||
13520 | canonical->addr_string = xstrdup (*copy_arg); | |
13521 | lsal.canonical = xstrdup (*copy_arg); | |
13522 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
13523 | } | |
13524 | ||
13525 | static void | |
13526 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13527 | struct linespec_result *canonical, | |
13528 | struct linespec_sals *lsal, | |
13529 | char *cond_string, | |
e7e0cddf | 13530 | char *extra_string, |
983af33b SDJ |
13531 | enum bptype type_wanted, |
13532 | enum bpdisp disposition, | |
13533 | int thread, | |
13534 | int task, int ignore_count, | |
13535 | const struct breakpoint_ops *ops, | |
13536 | int from_tty, int enabled, | |
44f238bb | 13537 | int internal, unsigned flags) |
983af33b SDJ |
13538 | { |
13539 | int i; | |
13540 | ||
13541 | /* If the user is creating a static tracepoint by marker id | |
13542 | (strace -m MARKER_ID), then store the sals index, so that | |
13543 | breakpoint_re_set can try to match up which of the newly | |
13544 | found markers corresponds to this one, and, don't try to | |
13545 | expand multiple locations for each sal, given than SALS | |
13546 | already should contain all sals for MARKER_ID. */ | |
13547 | ||
13548 | for (i = 0; i < lsal->sals.nelts; ++i) | |
13549 | { | |
13550 | struct symtabs_and_lines expanded; | |
13551 | struct tracepoint *tp; | |
13552 | struct cleanup *old_chain; | |
13553 | char *addr_string; | |
13554 | ||
13555 | expanded.nelts = 1; | |
13556 | expanded.sals = &lsal->sals.sals[i]; | |
13557 | ||
13558 | addr_string = xstrdup (canonical->addr_string); | |
13559 | old_chain = make_cleanup (xfree, addr_string); | |
13560 | ||
13561 | tp = XCNEW (struct tracepoint); | |
13562 | init_breakpoint_sal (&tp->base, gdbarch, expanded, | |
13563 | addr_string, NULL, | |
e7e0cddf SS |
13564 | cond_string, extra_string, |
13565 | type_wanted, disposition, | |
983af33b | 13566 | thread, task, ignore_count, ops, |
44f238bb | 13567 | from_tty, enabled, internal, flags, |
983af33b SDJ |
13568 | canonical->special_display); |
13569 | /* Given that its possible to have multiple markers with | |
13570 | the same string id, if the user is creating a static | |
13571 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
13572 | store the sals index, so that breakpoint_re_set can | |
13573 | try to match up which of the newly found markers | |
13574 | corresponds to this one */ | |
13575 | tp->static_trace_marker_id_idx = i; | |
13576 | ||
13577 | install_breakpoint (internal, &tp->base, 0); | |
13578 | ||
13579 | discard_cleanups (old_chain); | |
13580 | } | |
13581 | } | |
13582 | ||
13583 | static void | |
13584 | strace_marker_decode_linespec (struct breakpoint *b, char **s, | |
13585 | struct symtabs_and_lines *sals) | |
13586 | { | |
13587 | struct tracepoint *tp = (struct tracepoint *) b; | |
13588 | ||
13589 | *sals = decode_static_tracepoint_spec (s); | |
13590 | if (sals->nelts > tp->static_trace_marker_id_idx) | |
13591 | { | |
13592 | sals->sals[0] = sals->sals[tp->static_trace_marker_id_idx]; | |
13593 | sals->nelts = 1; | |
13594 | } | |
13595 | else | |
13596 | error (_("marker %s not found"), tp->static_trace_marker_id); | |
13597 | } | |
13598 | ||
13599 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13600 | ||
13601 | static int | |
13602 | strace_marker_p (struct breakpoint *b) | |
13603 | { | |
13604 | return b->ops == &strace_marker_breakpoint_ops; | |
13605 | } | |
13606 | ||
53a5351d | 13607 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13608 | structures. */ |
c906108c SS |
13609 | |
13610 | void | |
fba45db2 | 13611 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13612 | { |
52f0bd74 | 13613 | struct breakpoint *b; |
c906108c | 13614 | |
8a3fe4f8 | 13615 | gdb_assert (bpt != NULL); |
c906108c | 13616 | |
4a64f543 MS |
13617 | /* Has this bp already been deleted? This can happen because |
13618 | multiple lists can hold pointers to bp's. bpstat lists are | |
13619 | especial culprits. | |
13620 | ||
13621 | One example of this happening is a watchpoint's scope bp. When | |
13622 | the scope bp triggers, we notice that the watchpoint is out of | |
13623 | scope, and delete it. We also delete its scope bp. But the | |
13624 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13625 | That bpstat is then checked for auto-deleting bp's, which are | |
13626 | deleted. | |
13627 | ||
13628 | A real solution to this problem might involve reference counts in | |
13629 | bp's, and/or giving them pointers back to their referencing | |
13630 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13631 | storage when no more references were extent. A cheaper bandaid | |
13632 | was chosen. */ | |
c906108c SS |
13633 | if (bpt->type == bp_none) |
13634 | return; | |
13635 | ||
4a64f543 MS |
13636 | /* At least avoid this stale reference until the reference counting |
13637 | of breakpoints gets resolved. */ | |
d0fb5eae | 13638 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13639 | { |
d0fb5eae | 13640 | struct breakpoint *related; |
3a5c3e22 | 13641 | struct watchpoint *w; |
d0fb5eae JK |
13642 | |
13643 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13644 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13645 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13646 | w = (struct watchpoint *) bpt; |
13647 | else | |
13648 | w = NULL; | |
13649 | if (w != NULL) | |
13650 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13651 | |
13652 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13653 | for (related = bpt; related->related_breakpoint != bpt; | |
13654 | related = related->related_breakpoint); | |
13655 | related->related_breakpoint = bpt->related_breakpoint; | |
13656 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13657 | } |
13658 | ||
a9634178 TJB |
13659 | /* watch_command_1 creates a watchpoint but only sets its number if |
13660 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13661 | a problem in that process, we'll be asked to delete the half-created | |
13662 | watchpoint. In that case, don't announce the deletion. */ | |
13663 | if (bpt->number) | |
13664 | observer_notify_breakpoint_deleted (bpt); | |
c906108c | 13665 | |
c906108c SS |
13666 | if (breakpoint_chain == bpt) |
13667 | breakpoint_chain = bpt->next; | |
13668 | ||
c906108c SS |
13669 | ALL_BREAKPOINTS (b) |
13670 | if (b->next == bpt) | |
c5aa993b JM |
13671 | { |
13672 | b->next = bpt->next; | |
13673 | break; | |
13674 | } | |
c906108c | 13675 | |
f431efe5 PA |
13676 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13677 | been freed. */ | |
13678 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13679 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13680 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13681 | commands are associated with the bpstat; if we remove it here, | |
13682 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13683 | event-top.c won't do anything, and temporary breakpoints with | |
13684 | commands won't work. */ | |
13685 | ||
13686 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13687 | ||
4a64f543 MS |
13688 | /* Now that breakpoint is removed from breakpoint list, update the |
13689 | global location list. This will remove locations that used to | |
13690 | belong to this breakpoint. Do this before freeing the breakpoint | |
13691 | itself, since remove_breakpoint looks at location's owner. It | |
13692 | might be better design to have location completely | |
13693 | self-contained, but it's not the case now. */ | |
b60e7edf | 13694 | update_global_location_list (0); |
74960c60 | 13695 | |
348d480f | 13696 | bpt->ops->dtor (bpt); |
4a64f543 MS |
13697 | /* On the chance that someone will soon try again to delete this |
13698 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13699 | bpt->type = bp_none; |
b8c9b27d | 13700 | xfree (bpt); |
c906108c SS |
13701 | } |
13702 | ||
4d6140d9 AC |
13703 | static void |
13704 | do_delete_breakpoint_cleanup (void *b) | |
13705 | { | |
13706 | delete_breakpoint (b); | |
13707 | } | |
13708 | ||
13709 | struct cleanup * | |
13710 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
13711 | { | |
13712 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
13713 | } | |
13714 | ||
51be5b68 PA |
13715 | /* Iterator function to call a user-provided callback function once |
13716 | for each of B and its related breakpoints. */ | |
13717 | ||
13718 | static void | |
13719 | iterate_over_related_breakpoints (struct breakpoint *b, | |
13720 | void (*function) (struct breakpoint *, | |
13721 | void *), | |
13722 | void *data) | |
13723 | { | |
13724 | struct breakpoint *related; | |
13725 | ||
13726 | related = b; | |
13727 | do | |
13728 | { | |
13729 | struct breakpoint *next; | |
13730 | ||
13731 | /* FUNCTION may delete RELATED. */ | |
13732 | next = related->related_breakpoint; | |
13733 | ||
13734 | if (next == related) | |
13735 | { | |
13736 | /* RELATED is the last ring entry. */ | |
13737 | function (related, data); | |
13738 | ||
13739 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13740 | B. There's nothing left to do anyway, so just break | |
13741 | out. */ | |
13742 | break; | |
13743 | } | |
13744 | else | |
13745 | function (related, data); | |
13746 | ||
13747 | related = next; | |
13748 | } | |
13749 | while (related != b); | |
13750 | } | |
95a42b64 TT |
13751 | |
13752 | static void | |
13753 | do_delete_breakpoint (struct breakpoint *b, void *ignore) | |
13754 | { | |
13755 | delete_breakpoint (b); | |
13756 | } | |
13757 | ||
51be5b68 PA |
13758 | /* A callback for map_breakpoint_numbers that calls |
13759 | delete_breakpoint. */ | |
13760 | ||
13761 | static void | |
13762 | do_map_delete_breakpoint (struct breakpoint *b, void *ignore) | |
13763 | { | |
13764 | iterate_over_related_breakpoints (b, do_delete_breakpoint, NULL); | |
13765 | } | |
13766 | ||
c906108c | 13767 | void |
fba45db2 | 13768 | delete_command (char *arg, int from_tty) |
c906108c | 13769 | { |
35df4500 | 13770 | struct breakpoint *b, *b_tmp; |
c906108c | 13771 | |
ea9365bb TT |
13772 | dont_repeat (); |
13773 | ||
c906108c SS |
13774 | if (arg == 0) |
13775 | { | |
13776 | int breaks_to_delete = 0; | |
13777 | ||
46c6471b PA |
13778 | /* Delete all breakpoints if no argument. Do not delete |
13779 | internal breakpoints, these have to be deleted with an | |
13780 | explicit breakpoint number argument. */ | |
c5aa993b | 13781 | ALL_BREAKPOINTS (b) |
46c6471b | 13782 | if (user_breakpoint_p (b)) |
973d738b DJ |
13783 | { |
13784 | breaks_to_delete = 1; | |
13785 | break; | |
13786 | } | |
c906108c SS |
13787 | |
13788 | /* Ask user only if there are some breakpoints to delete. */ | |
13789 | if (!from_tty | |
e2e0b3e5 | 13790 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 13791 | { |
35df4500 | 13792 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13793 | if (user_breakpoint_p (b)) |
c5aa993b | 13794 | delete_breakpoint (b); |
c906108c SS |
13795 | } |
13796 | } | |
13797 | else | |
51be5b68 | 13798 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
c906108c SS |
13799 | } |
13800 | ||
0d381245 VP |
13801 | static int |
13802 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 13803 | { |
0d381245 | 13804 | for (; loc; loc = loc->next) |
8645ff69 UW |
13805 | if (!loc->shlib_disabled |
13806 | && !loc->pspace->executing_startup) | |
0d381245 VP |
13807 | return 0; |
13808 | return 1; | |
fe3f5fa8 VP |
13809 | } |
13810 | ||
776592bf DE |
13811 | /* Subroutine of update_breakpoint_locations to simplify it. |
13812 | Return non-zero if multiple fns in list LOC have the same name. | |
13813 | Null names are ignored. */ | |
13814 | ||
13815 | static int | |
13816 | ambiguous_names_p (struct bp_location *loc) | |
13817 | { | |
13818 | struct bp_location *l; | |
13819 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
cc59ec59 MS |
13820 | (int (*) (const void *, |
13821 | const void *)) streq, | |
776592bf DE |
13822 | NULL, xcalloc, xfree); |
13823 | ||
13824 | for (l = loc; l != NULL; l = l->next) | |
13825 | { | |
13826 | const char **slot; | |
13827 | const char *name = l->function_name; | |
13828 | ||
13829 | /* Allow for some names to be NULL, ignore them. */ | |
13830 | if (name == NULL) | |
13831 | continue; | |
13832 | ||
13833 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
13834 | INSERT); | |
4a64f543 MS |
13835 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13836 | returns NULL. */ | |
776592bf DE |
13837 | if (*slot != NULL) |
13838 | { | |
13839 | htab_delete (htab); | |
13840 | return 1; | |
13841 | } | |
13842 | *slot = name; | |
13843 | } | |
13844 | ||
13845 | htab_delete (htab); | |
13846 | return 0; | |
13847 | } | |
13848 | ||
0fb4aa4b PA |
13849 | /* When symbols change, it probably means the sources changed as well, |
13850 | and it might mean the static tracepoint markers are no longer at | |
13851 | the same address or line numbers they used to be at last we | |
13852 | checked. Losing your static tracepoints whenever you rebuild is | |
13853 | undesirable. This function tries to resync/rematch gdb static | |
13854 | tracepoints with the markers on the target, for static tracepoints | |
13855 | that have not been set by marker id. Static tracepoint that have | |
13856 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13857 | The heuristic is: | |
13858 | ||
13859 | 1) For a tracepoint set at a specific address, look for a marker at | |
13860 | the old PC. If one is found there, assume to be the same marker. | |
13861 | If the name / string id of the marker found is different from the | |
13862 | previous known name, assume that means the user renamed the marker | |
13863 | in the sources, and output a warning. | |
13864 | ||
13865 | 2) For a tracepoint set at a given line number, look for a marker | |
13866 | at the new address of the old line number. If one is found there, | |
13867 | assume to be the same marker. If the name / string id of the | |
13868 | marker found is different from the previous known name, assume that | |
13869 | means the user renamed the marker in the sources, and output a | |
13870 | warning. | |
13871 | ||
13872 | 3) If a marker is no longer found at the same address or line, it | |
13873 | may mean the marker no longer exists. But it may also just mean | |
13874 | the code changed a bit. Maybe the user added a few lines of code | |
13875 | that made the marker move up or down (in line number terms). Ask | |
13876 | the target for info about the marker with the string id as we knew | |
13877 | it. If found, update line number and address in the matching | |
13878 | static tracepoint. This will get confused if there's more than one | |
13879 | marker with the same ID (possible in UST, although unadvised | |
13880 | precisely because it confuses tools). */ | |
13881 | ||
13882 | static struct symtab_and_line | |
13883 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13884 | { | |
d9b3f62e | 13885 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13886 | struct static_tracepoint_marker marker; |
13887 | CORE_ADDR pc; | |
0fb4aa4b PA |
13888 | |
13889 | pc = sal.pc; | |
13890 | if (sal.line) | |
13891 | find_line_pc (sal.symtab, sal.line, &pc); | |
13892 | ||
13893 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13894 | { | |
d9b3f62e | 13895 | if (strcmp (tp->static_trace_marker_id, marker.str_id) != 0) |
0fb4aa4b PA |
13896 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
13897 | b->number, | |
d9b3f62e | 13898 | tp->static_trace_marker_id, marker.str_id); |
0fb4aa4b | 13899 | |
d9b3f62e PA |
13900 | xfree (tp->static_trace_marker_id); |
13901 | tp->static_trace_marker_id = xstrdup (marker.str_id); | |
0fb4aa4b PA |
13902 | release_static_tracepoint_marker (&marker); |
13903 | ||
13904 | return sal; | |
13905 | } | |
13906 | ||
13907 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13908 | by string ID. */ | |
13909 | if (!sal.explicit_pc | |
13910 | && sal.line != 0 | |
13911 | && sal.symtab != NULL | |
d9b3f62e | 13912 | && tp->static_trace_marker_id != NULL) |
0fb4aa4b PA |
13913 | { |
13914 | VEC(static_tracepoint_marker_p) *markers; | |
13915 | ||
13916 | markers | |
d9b3f62e | 13917 | = target_static_tracepoint_markers_by_strid (tp->static_trace_marker_id); |
0fb4aa4b PA |
13918 | |
13919 | if (!VEC_empty(static_tracepoint_marker_p, markers)) | |
13920 | { | |
80e1d417 | 13921 | struct symtab_and_line sal2; |
0fb4aa4b | 13922 | struct symbol *sym; |
80e1d417 | 13923 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13924 | struct ui_out *uiout = current_uiout; |
0fb4aa4b | 13925 | |
80e1d417 | 13926 | tpmarker = VEC_index (static_tracepoint_marker_p, markers, 0); |
0fb4aa4b | 13927 | |
d9b3f62e | 13928 | xfree (tp->static_trace_marker_id); |
80e1d417 | 13929 | tp->static_trace_marker_id = xstrdup (tpmarker->str_id); |
0fb4aa4b PA |
13930 | |
13931 | warning (_("marker for static tracepoint %d (%s) not " | |
13932 | "found at previous line number"), | |
d9b3f62e | 13933 | b->number, tp->static_trace_marker_id); |
0fb4aa4b | 13934 | |
80e1d417 | 13935 | init_sal (&sal2); |
0fb4aa4b | 13936 | |
80e1d417 | 13937 | sal2.pc = tpmarker->address; |
0fb4aa4b | 13938 | |
80e1d417 AS |
13939 | sal2 = find_pc_line (tpmarker->address, 0); |
13940 | sym = find_pc_sect_function (tpmarker->address, NULL); | |
0fb4aa4b PA |
13941 | ui_out_text (uiout, "Now in "); |
13942 | if (sym) | |
13943 | { | |
13944 | ui_out_field_string (uiout, "func", | |
13945 | SYMBOL_PRINT_NAME (sym)); | |
13946 | ui_out_text (uiout, " at "); | |
13947 | } | |
05cba821 JK |
13948 | ui_out_field_string (uiout, "file", |
13949 | symtab_to_filename_for_display (sal2.symtab)); | |
0fb4aa4b PA |
13950 | ui_out_text (uiout, ":"); |
13951 | ||
13952 | if (ui_out_is_mi_like_p (uiout)) | |
13953 | { | |
0b0865da | 13954 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 13955 | |
f35a17b5 | 13956 | ui_out_field_string (uiout, "fullname", fullname); |
0fb4aa4b PA |
13957 | } |
13958 | ||
80e1d417 | 13959 | ui_out_field_int (uiout, "line", sal2.line); |
0fb4aa4b PA |
13960 | ui_out_text (uiout, "\n"); |
13961 | ||
80e1d417 | 13962 | b->loc->line_number = sal2.line; |
2f202fde | 13963 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b PA |
13964 | |
13965 | xfree (b->addr_string); | |
13966 | b->addr_string = xstrprintf ("%s:%d", | |
05cba821 | 13967 | symtab_to_filename_for_display (sal2.symtab), |
f8eba3c6 | 13968 | b->loc->line_number); |
0fb4aa4b PA |
13969 | |
13970 | /* Might be nice to check if function changed, and warn if | |
13971 | so. */ | |
13972 | ||
80e1d417 | 13973 | release_static_tracepoint_marker (tpmarker); |
0fb4aa4b PA |
13974 | } |
13975 | } | |
13976 | return sal; | |
13977 | } | |
13978 | ||
8d3788bd VP |
13979 | /* Returns 1 iff locations A and B are sufficiently same that |
13980 | we don't need to report breakpoint as changed. */ | |
13981 | ||
13982 | static int | |
13983 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
13984 | { | |
13985 | while (a && b) | |
13986 | { | |
13987 | if (a->address != b->address) | |
13988 | return 0; | |
13989 | ||
13990 | if (a->shlib_disabled != b->shlib_disabled) | |
13991 | return 0; | |
13992 | ||
13993 | if (a->enabled != b->enabled) | |
13994 | return 0; | |
13995 | ||
13996 | a = a->next; | |
13997 | b = b->next; | |
13998 | } | |
13999 | ||
14000 | if ((a == NULL) != (b == NULL)) | |
14001 | return 0; | |
14002 | ||
14003 | return 1; | |
14004 | } | |
14005 | ||
f1310107 TJB |
14006 | /* Create new breakpoint locations for B (a hardware or software breakpoint) |
14007 | based on SALS and SALS_END. If SALS_END.NELTS is not zero, then B is | |
14008 | a ranged breakpoint. */ | |
14009 | ||
0e30163f | 14010 | void |
0d381245 | 14011 | update_breakpoint_locations (struct breakpoint *b, |
f1310107 TJB |
14012 | struct symtabs_and_lines sals, |
14013 | struct symtabs_and_lines sals_end) | |
fe3f5fa8 VP |
14014 | { |
14015 | int i; | |
0d381245 VP |
14016 | struct bp_location *existing_locations = b->loc; |
14017 | ||
f8eba3c6 TT |
14018 | if (sals_end.nelts != 0 && (sals.nelts != 1 || sals_end.nelts != 1)) |
14019 | { | |
14020 | /* Ranged breakpoints have only one start location and one end | |
14021 | location. */ | |
14022 | b->enable_state = bp_disabled; | |
14023 | update_global_location_list (1); | |
14024 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " | |
14025 | "multiple locations found\n"), | |
14026 | b->number); | |
14027 | return; | |
14028 | } | |
f1310107 | 14029 | |
4a64f543 MS |
14030 | /* If there's no new locations, and all existing locations are |
14031 | pending, don't do anything. This optimizes the common case where | |
14032 | all locations are in the same shared library, that was unloaded. | |
14033 | We'd like to retain the location, so that when the library is | |
14034 | loaded again, we don't loose the enabled/disabled status of the | |
14035 | individual locations. */ | |
0d381245 | 14036 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) |
fe3f5fa8 VP |
14037 | return; |
14038 | ||
fe3f5fa8 VP |
14039 | b->loc = NULL; |
14040 | ||
0d381245 | 14041 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 14042 | { |
f8eba3c6 TT |
14043 | struct bp_location *new_loc; |
14044 | ||
14045 | switch_to_program_space_and_thread (sals.sals[i].pspace); | |
14046 | ||
14047 | new_loc = add_location_to_breakpoint (b, &(sals.sals[i])); | |
fe3f5fa8 | 14048 | |
0d381245 VP |
14049 | /* Reparse conditions, they might contain references to the |
14050 | old symtab. */ | |
14051 | if (b->cond_string != NULL) | |
14052 | { | |
bbc13ae3 | 14053 | const char *s; |
bfd189b1 | 14054 | volatile struct gdb_exception e; |
fe3f5fa8 | 14055 | |
0d381245 VP |
14056 | s = b->cond_string; |
14057 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
14058 | { | |
1bb9788d TT |
14059 | new_loc->cond = parse_exp_1 (&s, sals.sals[i].pc, |
14060 | block_for_pc (sals.sals[i].pc), | |
0d381245 VP |
14061 | 0); |
14062 | } | |
14063 | if (e.reason < 0) | |
14064 | { | |
3e43a32a MS |
14065 | warning (_("failed to reevaluate condition " |
14066 | "for breakpoint %d: %s"), | |
0d381245 VP |
14067 | b->number, e.message); |
14068 | new_loc->enabled = 0; | |
14069 | } | |
14070 | } | |
fe3f5fa8 | 14071 | |
f1310107 TJB |
14072 | if (sals_end.nelts) |
14073 | { | |
14074 | CORE_ADDR end = find_breakpoint_range_end (sals_end.sals[0]); | |
14075 | ||
14076 | new_loc->length = end - sals.sals[0].pc + 1; | |
14077 | } | |
0d381245 | 14078 | } |
fe3f5fa8 | 14079 | |
514f746b AR |
14080 | /* Update locations of permanent breakpoints. */ |
14081 | if (b->enable_state == bp_permanent) | |
14082 | make_breakpoint_permanent (b); | |
14083 | ||
4a64f543 MS |
14084 | /* If possible, carry over 'disable' status from existing |
14085 | breakpoints. */ | |
0d381245 VP |
14086 | { |
14087 | struct bp_location *e = existing_locations; | |
776592bf DE |
14088 | /* If there are multiple breakpoints with the same function name, |
14089 | e.g. for inline functions, comparing function names won't work. | |
14090 | Instead compare pc addresses; this is just a heuristic as things | |
14091 | may have moved, but in practice it gives the correct answer | |
14092 | often enough until a better solution is found. */ | |
14093 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
14094 | ||
0d381245 VP |
14095 | for (; e; e = e->next) |
14096 | { | |
14097 | if (!e->enabled && e->function_name) | |
14098 | { | |
14099 | struct bp_location *l = b->loc; | |
776592bf DE |
14100 | if (have_ambiguous_names) |
14101 | { | |
14102 | for (; l; l = l->next) | |
f1310107 | 14103 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
14104 | { |
14105 | l->enabled = 0; | |
14106 | break; | |
14107 | } | |
14108 | } | |
14109 | else | |
14110 | { | |
14111 | for (; l; l = l->next) | |
14112 | if (l->function_name | |
14113 | && strcmp (e->function_name, l->function_name) == 0) | |
14114 | { | |
14115 | l->enabled = 0; | |
14116 | break; | |
14117 | } | |
14118 | } | |
0d381245 VP |
14119 | } |
14120 | } | |
14121 | } | |
fe3f5fa8 | 14122 | |
8d3788bd VP |
14123 | if (!locations_are_equal (existing_locations, b->loc)) |
14124 | observer_notify_breakpoint_modified (b); | |
14125 | ||
b60e7edf | 14126 | update_global_location_list (1); |
fe3f5fa8 VP |
14127 | } |
14128 | ||
ef23e705 TJB |
14129 | /* Find the SaL locations corresponding to the given ADDR_STRING. |
14130 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ | |
14131 | ||
14132 | static struct symtabs_and_lines | |
14133 | addr_string_to_sals (struct breakpoint *b, char *addr_string, int *found) | |
14134 | { | |
14135 | char *s; | |
02d20e4a | 14136 | struct symtabs_and_lines sals = {0}; |
f8eba3c6 | 14137 | volatile struct gdb_exception e; |
ef23e705 | 14138 | |
983af33b | 14139 | gdb_assert (b->ops != NULL); |
ef23e705 | 14140 | s = addr_string; |
ef23e705 TJB |
14141 | |
14142 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
14143 | { | |
983af33b | 14144 | b->ops->decode_linespec (b, &s, &sals); |
ef23e705 TJB |
14145 | } |
14146 | if (e.reason < 0) | |
14147 | { | |
14148 | int not_found_and_ok = 0; | |
14149 | /* For pending breakpoints, it's expected that parsing will | |
14150 | fail until the right shared library is loaded. User has | |
14151 | already told to create pending breakpoints and don't need | |
14152 | extra messages. If breakpoint is in bp_shlib_disabled | |
14153 | state, then user already saw the message about that | |
14154 | breakpoint being disabled, and don't want to see more | |
14155 | errors. */ | |
58438ac1 | 14156 | if (e.error == NOT_FOUND_ERROR |
ef23e705 TJB |
14157 | && (b->condition_not_parsed |
14158 | || (b->loc && b->loc->shlib_disabled) | |
f8eba3c6 | 14159 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
14160 | || b->enable_state == bp_disabled)) |
14161 | not_found_and_ok = 1; | |
14162 | ||
14163 | if (!not_found_and_ok) | |
14164 | { | |
14165 | /* We surely don't want to warn about the same breakpoint | |
14166 | 10 times. One solution, implemented here, is disable | |
14167 | the breakpoint on error. Another solution would be to | |
14168 | have separate 'warning emitted' flag. Since this | |
14169 | happens only when a binary has changed, I don't know | |
14170 | which approach is better. */ | |
14171 | b->enable_state = bp_disabled; | |
14172 | throw_exception (e); | |
14173 | } | |
14174 | } | |
14175 | ||
58438ac1 | 14176 | if (e.reason == 0 || e.error != NOT_FOUND_ERROR) |
ef23e705 | 14177 | { |
f8eba3c6 | 14178 | int i; |
ef23e705 | 14179 | |
f8eba3c6 TT |
14180 | for (i = 0; i < sals.nelts; ++i) |
14181 | resolve_sal_pc (&sals.sals[i]); | |
ef23e705 TJB |
14182 | if (b->condition_not_parsed && s && s[0]) |
14183 | { | |
ed1d1739 KS |
14184 | char *cond_string, *extra_string; |
14185 | int thread, task; | |
ef23e705 TJB |
14186 | |
14187 | find_condition_and_thread (s, sals.sals[0].pc, | |
e7e0cddf SS |
14188 | &cond_string, &thread, &task, |
14189 | &extra_string); | |
ef23e705 TJB |
14190 | if (cond_string) |
14191 | b->cond_string = cond_string; | |
14192 | b->thread = thread; | |
14193 | b->task = task; | |
e7e0cddf SS |
14194 | if (extra_string) |
14195 | b->extra_string = extra_string; | |
ef23e705 TJB |
14196 | b->condition_not_parsed = 0; |
14197 | } | |
14198 | ||
983af33b | 14199 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
ef23e705 | 14200 | sals.sals[0] = update_static_tracepoint (b, sals.sals[0]); |
ef23e705 | 14201 | |
58438ac1 TT |
14202 | *found = 1; |
14203 | } | |
14204 | else | |
14205 | *found = 0; | |
ef23e705 TJB |
14206 | |
14207 | return sals; | |
14208 | } | |
14209 | ||
348d480f PA |
14210 | /* The default re_set method, for typical hardware or software |
14211 | breakpoints. Reevaluate the breakpoint and recreate its | |
14212 | locations. */ | |
14213 | ||
14214 | static void | |
28010a5d | 14215 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 TJB |
14216 | { |
14217 | int found; | |
f1310107 | 14218 | struct symtabs_and_lines sals, sals_end; |
ef23e705 | 14219 | struct symtabs_and_lines expanded = {0}; |
f1310107 | 14220 | struct symtabs_and_lines expanded_end = {0}; |
ef23e705 TJB |
14221 | |
14222 | sals = addr_string_to_sals (b, b->addr_string, &found); | |
14223 | if (found) | |
14224 | { | |
14225 | make_cleanup (xfree, sals.sals); | |
f8eba3c6 | 14226 | expanded = sals; |
ef23e705 TJB |
14227 | } |
14228 | ||
f1310107 TJB |
14229 | if (b->addr_string_range_end) |
14230 | { | |
14231 | sals_end = addr_string_to_sals (b, b->addr_string_range_end, &found); | |
14232 | if (found) | |
14233 | { | |
14234 | make_cleanup (xfree, sals_end.sals); | |
f8eba3c6 | 14235 | expanded_end = sals_end; |
f1310107 TJB |
14236 | } |
14237 | } | |
14238 | ||
14239 | update_breakpoint_locations (b, expanded, expanded_end); | |
28010a5d PA |
14240 | } |
14241 | ||
983af33b SDJ |
14242 | /* Default method for creating SALs from an address string. It basically |
14243 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
14244 | ||
14245 | static void | |
14246 | create_sals_from_address_default (char **arg, | |
14247 | struct linespec_result *canonical, | |
14248 | enum bptype type_wanted, | |
14249 | char *addr_start, char **copy_arg) | |
14250 | { | |
14251 | parse_breakpoint_sals (arg, canonical); | |
14252 | } | |
14253 | ||
14254 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
14255 | function for the `create_breakpoints_sal' method of | |
14256 | breakpoint_ops. */ | |
14257 | ||
14258 | static void | |
14259 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
14260 | struct linespec_result *canonical, | |
14261 | struct linespec_sals *lsal, | |
14262 | char *cond_string, | |
e7e0cddf | 14263 | char *extra_string, |
983af33b SDJ |
14264 | enum bptype type_wanted, |
14265 | enum bpdisp disposition, | |
14266 | int thread, | |
14267 | int task, int ignore_count, | |
14268 | const struct breakpoint_ops *ops, | |
14269 | int from_tty, int enabled, | |
44f238bb | 14270 | int internal, unsigned flags) |
983af33b SDJ |
14271 | { |
14272 | create_breakpoints_sal (gdbarch, canonical, cond_string, | |
e7e0cddf | 14273 | extra_string, |
983af33b SDJ |
14274 | type_wanted, disposition, |
14275 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 14276 | enabled, internal, flags); |
983af33b SDJ |
14277 | } |
14278 | ||
14279 | /* Decode the line represented by S by calling decode_line_full. This is the | |
14280 | default function for the `decode_linespec' method of breakpoint_ops. */ | |
14281 | ||
14282 | static void | |
14283 | decode_linespec_default (struct breakpoint *b, char **s, | |
14284 | struct symtabs_and_lines *sals) | |
14285 | { | |
14286 | struct linespec_result canonical; | |
14287 | ||
14288 | init_linespec_result (&canonical); | |
14289 | decode_line_full (s, DECODE_LINE_FUNFIRSTLINE, | |
14290 | (struct symtab *) NULL, 0, | |
14291 | &canonical, multiple_symbols_all, | |
14292 | b->filter); | |
14293 | ||
14294 | /* We should get 0 or 1 resulting SALs. */ | |
14295 | gdb_assert (VEC_length (linespec_sals, canonical.sals) < 2); | |
14296 | ||
14297 | if (VEC_length (linespec_sals, canonical.sals) > 0) | |
14298 | { | |
14299 | struct linespec_sals *lsal; | |
14300 | ||
14301 | lsal = VEC_index (linespec_sals, canonical.sals, 0); | |
14302 | *sals = lsal->sals; | |
14303 | /* Arrange it so the destructor does not free the | |
14304 | contents. */ | |
14305 | lsal->sals.sals = NULL; | |
14306 | } | |
14307 | ||
14308 | destroy_linespec_result (&canonical); | |
14309 | } | |
14310 | ||
28010a5d PA |
14311 | /* Prepare the global context for a re-set of breakpoint B. */ |
14312 | ||
14313 | static struct cleanup * | |
14314 | prepare_re_set_context (struct breakpoint *b) | |
14315 | { | |
14316 | struct cleanup *cleanups; | |
14317 | ||
14318 | input_radix = b->input_radix; | |
14319 | cleanups = save_current_space_and_thread (); | |
f8eba3c6 TT |
14320 | if (b->pspace != NULL) |
14321 | switch_to_program_space_and_thread (b->pspace); | |
28010a5d PA |
14322 | set_language (b->language); |
14323 | ||
14324 | return cleanups; | |
ef23e705 TJB |
14325 | } |
14326 | ||
c906108c SS |
14327 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
14328 | The value we return ends up being the return value from catch_errors. | |
14329 | Unused in this case. */ | |
14330 | ||
14331 | static int | |
4efb68b1 | 14332 | breakpoint_re_set_one (void *bint) |
c906108c | 14333 | { |
4a64f543 | 14334 | /* Get past catch_errs. */ |
53a5351d | 14335 | struct breakpoint *b = (struct breakpoint *) bint; |
348d480f | 14336 | struct cleanup *cleanups; |
c906108c | 14337 | |
348d480f PA |
14338 | cleanups = prepare_re_set_context (b); |
14339 | b->ops->re_set (b); | |
14340 | do_cleanups (cleanups); | |
c906108c SS |
14341 | return 0; |
14342 | } | |
14343 | ||
69de3c6a | 14344 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 14345 | void |
69de3c6a | 14346 | breakpoint_re_set (void) |
c906108c | 14347 | { |
35df4500 | 14348 | struct breakpoint *b, *b_tmp; |
c906108c SS |
14349 | enum language save_language; |
14350 | int save_input_radix; | |
6c95b8df | 14351 | struct cleanup *old_chain; |
c5aa993b | 14352 | |
c906108c SS |
14353 | save_language = current_language->la_language; |
14354 | save_input_radix = input_radix; | |
6c95b8df PA |
14355 | old_chain = save_current_program_space (); |
14356 | ||
35df4500 | 14357 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 14358 | { |
4a64f543 | 14359 | /* Format possible error msg. */ |
fe3f5fa8 | 14360 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
14361 | b->number); |
14362 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 14363 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 14364 | do_cleanups (cleanups); |
c5aa993b | 14365 | } |
c906108c SS |
14366 | set_language (save_language); |
14367 | input_radix = save_input_radix; | |
e62c965a | 14368 | |
0756c555 | 14369 | jit_breakpoint_re_set (); |
4efc6507 | 14370 | |
6c95b8df PA |
14371 | do_cleanups (old_chain); |
14372 | ||
af02033e PP |
14373 | create_overlay_event_breakpoint (); |
14374 | create_longjmp_master_breakpoint (); | |
14375 | create_std_terminate_master_breakpoint (); | |
186c406b | 14376 | create_exception_master_breakpoint (); |
c906108c SS |
14377 | } |
14378 | \f | |
c906108c SS |
14379 | /* Reset the thread number of this breakpoint: |
14380 | ||
14381 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 14382 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 14383 | void |
fba45db2 | 14384 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
14385 | { |
14386 | if (b->thread != -1) | |
14387 | { | |
39f77062 KB |
14388 | if (in_thread_list (inferior_ptid)) |
14389 | b->thread = pid_to_thread_id (inferior_ptid); | |
6c95b8df PA |
14390 | |
14391 | /* We're being called after following a fork. The new fork is | |
14392 | selected as current, and unless this was a vfork will have a | |
14393 | different program space from the original thread. Reset that | |
14394 | as well. */ | |
14395 | b->loc->pspace = current_program_space; | |
c906108c SS |
14396 | } |
14397 | } | |
14398 | ||
03ac34d5 MS |
14399 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14400 | If from_tty is nonzero, it prints a message to that effect, | |
14401 | which ends with a period (no newline). */ | |
14402 | ||
c906108c | 14403 | void |
fba45db2 | 14404 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 14405 | { |
52f0bd74 | 14406 | struct breakpoint *b; |
c906108c SS |
14407 | |
14408 | if (count < 0) | |
14409 | count = 0; | |
14410 | ||
14411 | ALL_BREAKPOINTS (b) | |
14412 | if (b->number == bptnum) | |
c5aa993b | 14413 | { |
d77f58be SS |
14414 | if (is_tracepoint (b)) |
14415 | { | |
14416 | if (from_tty && count != 0) | |
14417 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
14418 | bptnum); | |
14419 | return; | |
14420 | } | |
14421 | ||
c5aa993b | 14422 | b->ignore_count = count; |
221ea385 KS |
14423 | if (from_tty) |
14424 | { | |
14425 | if (count == 0) | |
3e43a32a MS |
14426 | printf_filtered (_("Will stop next time " |
14427 | "breakpoint %d is reached."), | |
221ea385 KS |
14428 | bptnum); |
14429 | else if (count == 1) | |
a3f17187 | 14430 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
14431 | bptnum); |
14432 | else | |
3e43a32a MS |
14433 | printf_filtered (_("Will ignore next %d " |
14434 | "crossings of breakpoint %d."), | |
221ea385 KS |
14435 | count, bptnum); |
14436 | } | |
8d3788bd | 14437 | observer_notify_breakpoint_modified (b); |
c5aa993b JM |
14438 | return; |
14439 | } | |
c906108c | 14440 | |
8a3fe4f8 | 14441 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
14442 | } |
14443 | ||
c906108c SS |
14444 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
14445 | ||
14446 | static void | |
fba45db2 | 14447 | ignore_command (char *args, int from_tty) |
c906108c SS |
14448 | { |
14449 | char *p = args; | |
52f0bd74 | 14450 | int num; |
c906108c SS |
14451 | |
14452 | if (p == 0) | |
e2e0b3e5 | 14453 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 14454 | |
c906108c | 14455 | num = get_number (&p); |
5c44784c | 14456 | if (num == 0) |
8a3fe4f8 | 14457 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 14458 | if (*p == 0) |
8a3fe4f8 | 14459 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
14460 | |
14461 | set_ignore_count (num, | |
14462 | longest_to_int (value_as_long (parse_and_eval (p))), | |
14463 | from_tty); | |
221ea385 KS |
14464 | if (from_tty) |
14465 | printf_filtered ("\n"); | |
c906108c SS |
14466 | } |
14467 | \f | |
14468 | /* Call FUNCTION on each of the breakpoints | |
14469 | whose numbers are given in ARGS. */ | |
14470 | ||
14471 | static void | |
95a42b64 TT |
14472 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *, |
14473 | void *), | |
14474 | void *data) | |
c906108c | 14475 | { |
52f0bd74 AC |
14476 | int num; |
14477 | struct breakpoint *b, *tmp; | |
11cf8741 | 14478 | int match; |
197f0a60 | 14479 | struct get_number_or_range_state state; |
c906108c | 14480 | |
197f0a60 | 14481 | if (args == 0) |
e2e0b3e5 | 14482 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c | 14483 | |
197f0a60 TT |
14484 | init_number_or_range (&state, args); |
14485 | ||
14486 | while (!state.finished) | |
c906108c | 14487 | { |
197f0a60 TT |
14488 | char *p = state.string; |
14489 | ||
11cf8741 | 14490 | match = 0; |
c5aa993b | 14491 | |
197f0a60 | 14492 | num = get_number_or_range (&state); |
5c44784c | 14493 | if (num == 0) |
c5aa993b | 14494 | { |
8a3fe4f8 | 14495 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
14496 | } |
14497 | else | |
14498 | { | |
14499 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
14500 | if (b->number == num) | |
14501 | { | |
11cf8741 | 14502 | match = 1; |
cdac0397 | 14503 | function (b, data); |
11cf8741 | 14504 | break; |
5c44784c | 14505 | } |
11cf8741 | 14506 | if (match == 0) |
a3f17187 | 14507 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 14508 | } |
c906108c SS |
14509 | } |
14510 | } | |
14511 | ||
0d381245 VP |
14512 | static struct bp_location * |
14513 | find_location_by_number (char *number) | |
14514 | { | |
14515 | char *dot = strchr (number, '.'); | |
14516 | char *p1; | |
14517 | int bp_num; | |
14518 | int loc_num; | |
14519 | struct breakpoint *b; | |
14520 | struct bp_location *loc; | |
14521 | ||
14522 | *dot = '\0'; | |
14523 | ||
14524 | p1 = number; | |
197f0a60 | 14525 | bp_num = get_number (&p1); |
0d381245 VP |
14526 | if (bp_num == 0) |
14527 | error (_("Bad breakpoint number '%s'"), number); | |
14528 | ||
14529 | ALL_BREAKPOINTS (b) | |
14530 | if (b->number == bp_num) | |
14531 | { | |
14532 | break; | |
14533 | } | |
14534 | ||
14535 | if (!b || b->number != bp_num) | |
14536 | error (_("Bad breakpoint number '%s'"), number); | |
14537 | ||
14538 | p1 = dot+1; | |
197f0a60 | 14539 | loc_num = get_number (&p1); |
0d381245 VP |
14540 | if (loc_num == 0) |
14541 | error (_("Bad breakpoint location number '%s'"), number); | |
14542 | ||
14543 | --loc_num; | |
14544 | loc = b->loc; | |
14545 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
14546 | ; | |
14547 | if (!loc) | |
14548 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
14549 | ||
14550 | return loc; | |
14551 | } | |
14552 | ||
14553 | ||
1900040c MS |
14554 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14555 | If from_tty is nonzero, it prints a message to that effect, | |
14556 | which ends with a period (no newline). */ | |
14557 | ||
c906108c | 14558 | void |
fba45db2 | 14559 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14560 | { |
14561 | /* Never disable a watchpoint scope breakpoint; we want to | |
14562 | hit them when we leave scope so we can delete both the | |
14563 | watchpoint and its scope breakpoint at that time. */ | |
14564 | if (bpt->type == bp_watchpoint_scope) | |
14565 | return; | |
14566 | ||
c2c6d25f | 14567 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 14568 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
14569 | return; |
14570 | ||
b5de0fa7 | 14571 | bpt->enable_state = bp_disabled; |
c906108c | 14572 | |
b775012e LM |
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_disable_tracepoint (location); | |
14583 | } | |
14584 | ||
b60e7edf | 14585 | update_global_location_list (0); |
c906108c | 14586 | |
8d3788bd | 14587 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14588 | } |
14589 | ||
51be5b68 PA |
14590 | /* A callback for iterate_over_related_breakpoints. */ |
14591 | ||
14592 | static void | |
14593 | do_disable_breakpoint (struct breakpoint *b, void *ignore) | |
14594 | { | |
14595 | disable_breakpoint (b); | |
14596 | } | |
14597 | ||
95a42b64 TT |
14598 | /* A callback for map_breakpoint_numbers that calls |
14599 | disable_breakpoint. */ | |
14600 | ||
14601 | static void | |
14602 | do_map_disable_breakpoint (struct breakpoint *b, void *ignore) | |
14603 | { | |
51be5b68 | 14604 | iterate_over_related_breakpoints (b, do_disable_breakpoint, NULL); |
95a42b64 TT |
14605 | } |
14606 | ||
c906108c | 14607 | static void |
fba45db2 | 14608 | disable_command (char *args, int from_tty) |
c906108c | 14609 | { |
c906108c | 14610 | if (args == 0) |
46c6471b PA |
14611 | { |
14612 | struct breakpoint *bpt; | |
14613 | ||
14614 | ALL_BREAKPOINTS (bpt) | |
14615 | if (user_breakpoint_p (bpt)) | |
14616 | disable_breakpoint (bpt); | |
14617 | } | |
0d381245 VP |
14618 | else if (strchr (args, '.')) |
14619 | { | |
14620 | struct bp_location *loc = find_location_by_number (args); | |
14621 | if (loc) | |
d248b706 | 14622 | { |
b775012e LM |
14623 | if (loc->enabled) |
14624 | { | |
14625 | loc->enabled = 0; | |
14626 | mark_breakpoint_location_modified (loc); | |
14627 | } | |
d248b706 KY |
14628 | if (target_supports_enable_disable_tracepoint () |
14629 | && current_trace_status ()->running && loc->owner | |
14630 | && is_tracepoint (loc->owner)) | |
14631 | target_disable_tracepoint (loc); | |
14632 | } | |
b60e7edf | 14633 | update_global_location_list (0); |
0d381245 | 14634 | } |
c906108c | 14635 | else |
95a42b64 | 14636 | map_breakpoint_numbers (args, do_map_disable_breakpoint, NULL); |
c906108c SS |
14637 | } |
14638 | ||
14639 | static void | |
816338b5 SS |
14640 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14641 | int count) | |
c906108c | 14642 | { |
afe38095 | 14643 | int target_resources_ok; |
c906108c SS |
14644 | |
14645 | if (bpt->type == bp_hardware_breakpoint) | |
14646 | { | |
14647 | int i; | |
c5aa993b | 14648 | i = hw_breakpoint_used_count (); |
53a5351d | 14649 | target_resources_ok = |
d92524f1 | 14650 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14651 | i + 1, 0); |
c906108c | 14652 | if (target_resources_ok == 0) |
8a3fe4f8 | 14653 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14654 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14655 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14656 | } |
14657 | ||
cc60f2e3 | 14658 | if (is_watchpoint (bpt)) |
c906108c | 14659 | { |
d07205c2 JK |
14660 | /* Initialize it just to avoid a GCC false warning. */ |
14661 | enum enable_state orig_enable_state = 0; | |
bfd189b1 | 14662 | volatile struct gdb_exception e; |
dde02812 ES |
14663 | |
14664 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 14665 | { |
3a5c3e22 PA |
14666 | struct watchpoint *w = (struct watchpoint *) bpt; |
14667 | ||
1e718ff1 TJB |
14668 | orig_enable_state = bpt->enable_state; |
14669 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14670 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14671 | } |
dde02812 | 14672 | if (e.reason < 0) |
c5aa993b | 14673 | { |
1e718ff1 | 14674 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14675 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14676 | bpt->number); | |
14677 | return; | |
c5aa993b | 14678 | } |
c906108c | 14679 | } |
0101ce28 | 14680 | |
b4c291bb KH |
14681 | if (bpt->enable_state != bp_permanent) |
14682 | bpt->enable_state = bp_enabled; | |
d248b706 | 14683 | |
b775012e LM |
14684 | bpt->enable_state = bp_enabled; |
14685 | ||
14686 | /* Mark breakpoint locations modified. */ | |
14687 | mark_breakpoint_modified (bpt); | |
14688 | ||
d248b706 KY |
14689 | if (target_supports_enable_disable_tracepoint () |
14690 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14691 | { | |
14692 | struct bp_location *location; | |
14693 | ||
14694 | for (location = bpt->loc; location; location = location->next) | |
14695 | target_enable_tracepoint (location); | |
14696 | } | |
14697 | ||
b4c291bb | 14698 | bpt->disposition = disposition; |
816338b5 | 14699 | bpt->enable_count = count; |
b60e7edf | 14700 | update_global_location_list (1); |
9c97429f | 14701 | |
8d3788bd | 14702 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14703 | } |
14704 | ||
fe3f5fa8 | 14705 | |
c906108c | 14706 | void |
fba45db2 | 14707 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14708 | { |
816338b5 | 14709 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14710 | } |
14711 | ||
14712 | static void | |
14713 | do_enable_breakpoint (struct breakpoint *bpt, void *arg) | |
14714 | { | |
14715 | enable_breakpoint (bpt); | |
c906108c SS |
14716 | } |
14717 | ||
95a42b64 TT |
14718 | /* A callback for map_breakpoint_numbers that calls |
14719 | enable_breakpoint. */ | |
14720 | ||
14721 | static void | |
14722 | do_map_enable_breakpoint (struct breakpoint *b, void *ignore) | |
14723 | { | |
51be5b68 | 14724 | iterate_over_related_breakpoints (b, do_enable_breakpoint, NULL); |
95a42b64 TT |
14725 | } |
14726 | ||
c906108c SS |
14727 | /* The enable command enables the specified breakpoints (or all defined |
14728 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 14729 | in stopping the inferior. */ |
c906108c | 14730 | |
c906108c | 14731 | static void |
fba45db2 | 14732 | enable_command (char *args, int from_tty) |
c906108c | 14733 | { |
c906108c | 14734 | if (args == 0) |
46c6471b PA |
14735 | { |
14736 | struct breakpoint *bpt; | |
14737 | ||
14738 | ALL_BREAKPOINTS (bpt) | |
14739 | if (user_breakpoint_p (bpt)) | |
14740 | enable_breakpoint (bpt); | |
14741 | } | |
0d381245 VP |
14742 | else if (strchr (args, '.')) |
14743 | { | |
14744 | struct bp_location *loc = find_location_by_number (args); | |
14745 | if (loc) | |
d248b706 | 14746 | { |
b775012e LM |
14747 | if (!loc->enabled) |
14748 | { | |
14749 | loc->enabled = 1; | |
14750 | mark_breakpoint_location_modified (loc); | |
14751 | } | |
d248b706 KY |
14752 | if (target_supports_enable_disable_tracepoint () |
14753 | && current_trace_status ()->running && loc->owner | |
14754 | && is_tracepoint (loc->owner)) | |
14755 | target_enable_tracepoint (loc); | |
14756 | } | |
b60e7edf | 14757 | update_global_location_list (1); |
0d381245 | 14758 | } |
c906108c | 14759 | else |
95a42b64 | 14760 | map_breakpoint_numbers (args, do_map_enable_breakpoint, NULL); |
c906108c SS |
14761 | } |
14762 | ||
816338b5 SS |
14763 | /* This struct packages up disposition data for application to multiple |
14764 | breakpoints. */ | |
14765 | ||
14766 | struct disp_data | |
14767 | { | |
14768 | enum bpdisp disp; | |
14769 | int count; | |
14770 | }; | |
14771 | ||
c906108c | 14772 | static void |
51be5b68 PA |
14773 | do_enable_breakpoint_disp (struct breakpoint *bpt, void *arg) |
14774 | { | |
816338b5 | 14775 | struct disp_data disp_data = *(struct disp_data *) arg; |
51be5b68 | 14776 | |
816338b5 | 14777 | enable_breakpoint_disp (bpt, disp_data.disp, disp_data.count); |
51be5b68 PA |
14778 | } |
14779 | ||
14780 | static void | |
14781 | do_map_enable_once_breakpoint (struct breakpoint *bpt, void *ignore) | |
c906108c | 14782 | { |
816338b5 | 14783 | struct disp_data disp = { disp_disable, 1 }; |
51be5b68 PA |
14784 | |
14785 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
14786 | } |
14787 | ||
c906108c | 14788 | static void |
fba45db2 | 14789 | enable_once_command (char *args, int from_tty) |
c906108c | 14790 | { |
51be5b68 | 14791 | map_breakpoint_numbers (args, do_map_enable_once_breakpoint, NULL); |
c906108c SS |
14792 | } |
14793 | ||
816338b5 SS |
14794 | static void |
14795 | do_map_enable_count_breakpoint (struct breakpoint *bpt, void *countptr) | |
14796 | { | |
14797 | struct disp_data disp = { disp_disable, *(int *) countptr }; | |
14798 | ||
14799 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
14800 | } | |
14801 | ||
14802 | static void | |
14803 | enable_count_command (char *args, int from_tty) | |
14804 | { | |
14805 | int count = get_number (&args); | |
14806 | ||
14807 | map_breakpoint_numbers (args, do_map_enable_count_breakpoint, &count); | |
14808 | } | |
14809 | ||
c906108c | 14810 | static void |
51be5b68 | 14811 | do_map_enable_delete_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 14812 | { |
816338b5 | 14813 | struct disp_data disp = { disp_del, 1 }; |
51be5b68 PA |
14814 | |
14815 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
14816 | } |
14817 | ||
c906108c | 14818 | static void |
fba45db2 | 14819 | enable_delete_command (char *args, int from_tty) |
c906108c | 14820 | { |
51be5b68 | 14821 | map_breakpoint_numbers (args, do_map_enable_delete_breakpoint, NULL); |
c906108c SS |
14822 | } |
14823 | \f | |
fa8d40ab JJ |
14824 | static void |
14825 | set_breakpoint_cmd (char *args, int from_tty) | |
14826 | { | |
14827 | } | |
14828 | ||
14829 | static void | |
14830 | show_breakpoint_cmd (char *args, int from_tty) | |
14831 | { | |
14832 | } | |
14833 | ||
1f3b5d1b PP |
14834 | /* Invalidate last known value of any hardware watchpoint if |
14835 | the memory which that value represents has been written to by | |
14836 | GDB itself. */ | |
14837 | ||
14838 | static void | |
8de0566d YQ |
14839 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
14840 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
14841 | const bfd_byte *data) |
14842 | { | |
14843 | struct breakpoint *bp; | |
14844 | ||
14845 | ALL_BREAKPOINTS (bp) | |
14846 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 14847 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14848 | { |
3a5c3e22 | 14849 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14850 | |
3a5c3e22 PA |
14851 | if (wp->val_valid && wp->val) |
14852 | { | |
14853 | struct bp_location *loc; | |
14854 | ||
14855 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
14856 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
14857 | && loc->address + loc->length > addr | |
14858 | && addr + len > loc->address) | |
14859 | { | |
14860 | value_free (wp->val); | |
14861 | wp->val = NULL; | |
14862 | wp->val_valid = 0; | |
14863 | } | |
14864 | } | |
1f3b5d1b PP |
14865 | } |
14866 | } | |
14867 | ||
8181d85f DJ |
14868 | /* Create and insert a raw software breakpoint at PC. Return an |
14869 | identifier, which should be used to remove the breakpoint later. | |
14870 | In general, places which call this should be using something on the | |
14871 | breakpoint chain instead; this function should be eliminated | |
14872 | someday. */ | |
14873 | ||
14874 | void * | |
6c95b8df PA |
14875 | deprecated_insert_raw_breakpoint (struct gdbarch *gdbarch, |
14876 | struct address_space *aspace, CORE_ADDR pc) | |
8181d85f DJ |
14877 | { |
14878 | struct bp_target_info *bp_tgt; | |
14879 | ||
6c95b8df | 14880 | bp_tgt = XZALLOC (struct bp_target_info); |
8181d85f | 14881 | |
6c95b8df | 14882 | bp_tgt->placed_address_space = aspace; |
8181d85f | 14883 | bp_tgt->placed_address = pc; |
6c95b8df | 14884 | |
a6d9a66e | 14885 | if (target_insert_breakpoint (gdbarch, bp_tgt) != 0) |
8181d85f DJ |
14886 | { |
14887 | /* Could not insert the breakpoint. */ | |
14888 | xfree (bp_tgt); | |
14889 | return NULL; | |
14890 | } | |
14891 | ||
14892 | return bp_tgt; | |
14893 | } | |
14894 | ||
4a64f543 MS |
14895 | /* Remove a breakpoint BP inserted by |
14896 | deprecated_insert_raw_breakpoint. */ | |
8181d85f DJ |
14897 | |
14898 | int | |
a6d9a66e | 14899 | deprecated_remove_raw_breakpoint (struct gdbarch *gdbarch, void *bp) |
8181d85f DJ |
14900 | { |
14901 | struct bp_target_info *bp_tgt = bp; | |
14902 | int ret; | |
14903 | ||
a6d9a66e | 14904 | ret = target_remove_breakpoint (gdbarch, bp_tgt); |
8181d85f DJ |
14905 | xfree (bp_tgt); |
14906 | ||
14907 | return ret; | |
14908 | } | |
14909 | ||
4a64f543 MS |
14910 | /* One (or perhaps two) breakpoints used for software single |
14911 | stepping. */ | |
8181d85f DJ |
14912 | |
14913 | static void *single_step_breakpoints[2]; | |
a6d9a66e | 14914 | static struct gdbarch *single_step_gdbarch[2]; |
8181d85f DJ |
14915 | |
14916 | /* Create and insert a breakpoint for software single step. */ | |
14917 | ||
14918 | void | |
6c95b8df | 14919 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
4a64f543 MS |
14920 | struct address_space *aspace, |
14921 | CORE_ADDR next_pc) | |
8181d85f DJ |
14922 | { |
14923 | void **bpt_p; | |
14924 | ||
14925 | if (single_step_breakpoints[0] == NULL) | |
a6d9a66e UW |
14926 | { |
14927 | bpt_p = &single_step_breakpoints[0]; | |
14928 | single_step_gdbarch[0] = gdbarch; | |
14929 | } | |
8181d85f DJ |
14930 | else |
14931 | { | |
14932 | gdb_assert (single_step_breakpoints[1] == NULL); | |
14933 | bpt_p = &single_step_breakpoints[1]; | |
a6d9a66e | 14934 | single_step_gdbarch[1] = gdbarch; |
8181d85f DJ |
14935 | } |
14936 | ||
4a64f543 MS |
14937 | /* NOTE drow/2006-04-11: A future improvement to this function would |
14938 | be to only create the breakpoints once, and actually put them on | |
14939 | the breakpoint chain. That would let us use set_raw_breakpoint. | |
14940 | We could adjust the addresses each time they were needed. Doing | |
14941 | this requires corresponding changes elsewhere where single step | |
14942 | breakpoints are handled, however. So, for now, we use this. */ | |
8181d85f | 14943 | |
6c95b8df | 14944 | *bpt_p = deprecated_insert_raw_breakpoint (gdbarch, aspace, next_pc); |
8181d85f | 14945 | if (*bpt_p == NULL) |
5af949e3 UW |
14946 | error (_("Could not insert single-step breakpoint at %s"), |
14947 | paddress (gdbarch, next_pc)); | |
8181d85f DJ |
14948 | } |
14949 | ||
f02253f1 HZ |
14950 | /* Check if the breakpoints used for software single stepping |
14951 | were inserted or not. */ | |
14952 | ||
14953 | int | |
14954 | single_step_breakpoints_inserted (void) | |
14955 | { | |
14956 | return (single_step_breakpoints[0] != NULL | |
14957 | || single_step_breakpoints[1] != NULL); | |
14958 | } | |
14959 | ||
8181d85f DJ |
14960 | /* Remove and delete any breakpoints used for software single step. */ |
14961 | ||
14962 | void | |
14963 | remove_single_step_breakpoints (void) | |
14964 | { | |
14965 | gdb_assert (single_step_breakpoints[0] != NULL); | |
14966 | ||
14967 | /* See insert_single_step_breakpoint for more about this deprecated | |
14968 | call. */ | |
a6d9a66e UW |
14969 | deprecated_remove_raw_breakpoint (single_step_gdbarch[0], |
14970 | single_step_breakpoints[0]); | |
14971 | single_step_gdbarch[0] = NULL; | |
8181d85f DJ |
14972 | single_step_breakpoints[0] = NULL; |
14973 | ||
14974 | if (single_step_breakpoints[1] != NULL) | |
14975 | { | |
a6d9a66e UW |
14976 | deprecated_remove_raw_breakpoint (single_step_gdbarch[1], |
14977 | single_step_breakpoints[1]); | |
14978 | single_step_gdbarch[1] = NULL; | |
8181d85f DJ |
14979 | single_step_breakpoints[1] = NULL; |
14980 | } | |
14981 | } | |
14982 | ||
d03285ec UW |
14983 | /* Delete software single step breakpoints without removing them from |
14984 | the inferior. This is intended to be used if the inferior's address | |
14985 | space where they were inserted is already gone, e.g. after exit or | |
14986 | exec. */ | |
14987 | ||
14988 | void | |
14989 | cancel_single_step_breakpoints (void) | |
14990 | { | |
14991 | int i; | |
14992 | ||
14993 | for (i = 0; i < 2; i++) | |
14994 | if (single_step_breakpoints[i]) | |
14995 | { | |
14996 | xfree (single_step_breakpoints[i]); | |
14997 | single_step_breakpoints[i] = NULL; | |
14998 | single_step_gdbarch[i] = NULL; | |
14999 | } | |
15000 | } | |
15001 | ||
15002 | /* Detach software single-step breakpoints from INFERIOR_PTID without | |
15003 | removing them. */ | |
15004 | ||
15005 | static void | |
15006 | detach_single_step_breakpoints (void) | |
15007 | { | |
15008 | int i; | |
15009 | ||
15010 | for (i = 0; i < 2; i++) | |
15011 | if (single_step_breakpoints[i]) | |
15012 | target_remove_breakpoint (single_step_gdbarch[i], | |
15013 | single_step_breakpoints[i]); | |
15014 | } | |
15015 | ||
4a64f543 MS |
15016 | /* Check whether a software single-step breakpoint is inserted at |
15017 | PC. */ | |
1aafd4da UW |
15018 | |
15019 | static int | |
cc59ec59 MS |
15020 | single_step_breakpoint_inserted_here_p (struct address_space *aspace, |
15021 | CORE_ADDR pc) | |
1aafd4da UW |
15022 | { |
15023 | int i; | |
15024 | ||
15025 | for (i = 0; i < 2; i++) | |
15026 | { | |
15027 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
6c95b8df PA |
15028 | if (bp_tgt |
15029 | && breakpoint_address_match (bp_tgt->placed_address_space, | |
15030 | bp_tgt->placed_address, | |
15031 | aspace, pc)) | |
1aafd4da UW |
15032 | return 1; |
15033 | } | |
15034 | ||
15035 | return 0; | |
15036 | } | |
15037 | ||
a96d9b2e SDJ |
15038 | /* Returns 0 if 'bp' is NOT a syscall catchpoint, |
15039 | non-zero otherwise. */ | |
15040 | static int | |
15041 | is_syscall_catchpoint_enabled (struct breakpoint *bp) | |
15042 | { | |
15043 | if (syscall_catchpoint_p (bp) | |
15044 | && bp->enable_state != bp_disabled | |
15045 | && bp->enable_state != bp_call_disabled) | |
15046 | return 1; | |
15047 | else | |
15048 | return 0; | |
15049 | } | |
15050 | ||
15051 | int | |
15052 | catch_syscall_enabled (void) | |
15053 | { | |
fa3064dd YQ |
15054 | struct catch_syscall_inferior_data *inf_data |
15055 | = get_catch_syscall_inferior_data (current_inferior ()); | |
a96d9b2e | 15056 | |
fa3064dd | 15057 | return inf_data->total_syscalls_count != 0; |
a96d9b2e SDJ |
15058 | } |
15059 | ||
15060 | int | |
15061 | catching_syscall_number (int syscall_number) | |
15062 | { | |
15063 | struct breakpoint *bp; | |
15064 | ||
15065 | ALL_BREAKPOINTS (bp) | |
15066 | if (is_syscall_catchpoint_enabled (bp)) | |
15067 | { | |
be5c67c1 PA |
15068 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bp; |
15069 | ||
15070 | if (c->syscalls_to_be_caught) | |
a96d9b2e SDJ |
15071 | { |
15072 | int i, iter; | |
15073 | for (i = 0; | |
be5c67c1 | 15074 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
15075 | i++) |
15076 | if (syscall_number == iter) | |
15077 | return 1; | |
15078 | } | |
15079 | else | |
15080 | return 1; | |
15081 | } | |
15082 | ||
15083 | return 0; | |
15084 | } | |
15085 | ||
15086 | /* Complete syscall names. Used by "catch syscall". */ | |
49c4e619 | 15087 | static VEC (char_ptr) * |
a96d9b2e | 15088 | catch_syscall_completer (struct cmd_list_element *cmd, |
6f937416 | 15089 | const char *text, const char *word) |
a96d9b2e SDJ |
15090 | { |
15091 | const char **list = get_syscall_names (); | |
49c4e619 | 15092 | VEC (char_ptr) *retlist |
b45627a0 | 15093 | = (list == NULL) ? NULL : complete_on_enum (list, word, word); |
cc59ec59 | 15094 | |
c38eea1a MS |
15095 | xfree (list); |
15096 | return retlist; | |
a96d9b2e SDJ |
15097 | } |
15098 | ||
1042e4c0 SS |
15099 | /* Tracepoint-specific operations. */ |
15100 | ||
15101 | /* Set tracepoint count to NUM. */ | |
15102 | static void | |
15103 | set_tracepoint_count (int num) | |
15104 | { | |
15105 | tracepoint_count = num; | |
4fa62494 | 15106 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
15107 | } |
15108 | ||
70221824 | 15109 | static void |
1042e4c0 SS |
15110 | trace_command (char *arg, int from_tty) |
15111 | { | |
55aa24fb SDJ |
15112 | struct breakpoint_ops *ops; |
15113 | const char *arg_cp = arg; | |
15114 | ||
15115 | if (arg && probe_linespec_to_ops (&arg_cp)) | |
15116 | ops = &tracepoint_probe_breakpoint_ops; | |
15117 | else | |
15118 | ops = &tracepoint_breakpoint_ops; | |
15119 | ||
558a9d82 YQ |
15120 | create_breakpoint (get_current_arch (), |
15121 | arg, | |
15122 | NULL, 0, NULL, 1 /* parse arg */, | |
15123 | 0 /* tempflag */, | |
15124 | bp_tracepoint /* type_wanted */, | |
15125 | 0 /* Ignore count */, | |
15126 | pending_break_support, | |
15127 | ops, | |
15128 | from_tty, | |
15129 | 1 /* enabled */, | |
15130 | 0 /* internal */, 0); | |
1042e4c0 SS |
15131 | } |
15132 | ||
70221824 | 15133 | static void |
7a697b8d SS |
15134 | ftrace_command (char *arg, int from_tty) |
15135 | { | |
558a9d82 YQ |
15136 | create_breakpoint (get_current_arch (), |
15137 | arg, | |
15138 | NULL, 0, NULL, 1 /* parse arg */, | |
15139 | 0 /* tempflag */, | |
15140 | bp_fast_tracepoint /* type_wanted */, | |
15141 | 0 /* Ignore count */, | |
15142 | pending_break_support, | |
15143 | &tracepoint_breakpoint_ops, | |
15144 | from_tty, | |
15145 | 1 /* enabled */, | |
15146 | 0 /* internal */, 0); | |
0fb4aa4b PA |
15147 | } |
15148 | ||
15149 | /* strace command implementation. Creates a static tracepoint. */ | |
15150 | ||
70221824 | 15151 | static void |
0fb4aa4b PA |
15152 | strace_command (char *arg, int from_tty) |
15153 | { | |
983af33b SDJ |
15154 | struct breakpoint_ops *ops; |
15155 | ||
15156 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
15157 | or with a normal static tracepoint. */ | |
15158 | if (arg && strncmp (arg, "-m", 2) == 0 && isspace (arg[2])) | |
15159 | ops = &strace_marker_breakpoint_ops; | |
15160 | else | |
15161 | ops = &tracepoint_breakpoint_ops; | |
15162 | ||
558a9d82 YQ |
15163 | create_breakpoint (get_current_arch (), |
15164 | arg, | |
15165 | NULL, 0, NULL, 1 /* parse arg */, | |
15166 | 0 /* tempflag */, | |
15167 | bp_static_tracepoint /* type_wanted */, | |
15168 | 0 /* Ignore count */, | |
15169 | pending_break_support, | |
15170 | ops, | |
15171 | from_tty, | |
15172 | 1 /* enabled */, | |
15173 | 0 /* internal */, 0); | |
7a697b8d SS |
15174 | } |
15175 | ||
409873ef SS |
15176 | /* Set up a fake reader function that gets command lines from a linked |
15177 | list that was acquired during tracepoint uploading. */ | |
15178 | ||
15179 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 15180 | static int next_cmd; |
409873ef SS |
15181 | |
15182 | static char * | |
15183 | read_uploaded_action (void) | |
15184 | { | |
15185 | char *rslt; | |
15186 | ||
3149d8c1 | 15187 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 15188 | |
3149d8c1 | 15189 | next_cmd++; |
409873ef SS |
15190 | |
15191 | return rslt; | |
15192 | } | |
15193 | ||
00bf0b85 SS |
15194 | /* Given information about a tracepoint as recorded on a target (which |
15195 | can be either a live system or a trace file), attempt to create an | |
15196 | equivalent GDB tracepoint. This is not a reliable process, since | |
15197 | the target does not necessarily have all the information used when | |
15198 | the tracepoint was originally defined. */ | |
15199 | ||
d9b3f62e | 15200 | struct tracepoint * |
00bf0b85 | 15201 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 15202 | { |
409873ef | 15203 | char *addr_str, small_buf[100]; |
d9b3f62e | 15204 | struct tracepoint *tp; |
fd9b8c24 | 15205 | |
409873ef SS |
15206 | if (utp->at_string) |
15207 | addr_str = utp->at_string; | |
15208 | else | |
15209 | { | |
15210 | /* In the absence of a source location, fall back to raw | |
15211 | address. Since there is no way to confirm that the address | |
15212 | means the same thing as when the trace was started, warn the | |
15213 | user. */ | |
3e43a32a MS |
15214 | warning (_("Uploaded tracepoint %d has no " |
15215 | "source location, using raw address"), | |
409873ef | 15216 | utp->number); |
8c042590 | 15217 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
15218 | addr_str = small_buf; |
15219 | } | |
15220 | ||
15221 | /* There's not much we can do with a sequence of bytecodes. */ | |
15222 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
15223 | warning (_("Uploaded tracepoint %d condition " |
15224 | "has no source form, ignoring it"), | |
409873ef | 15225 | utp->number); |
d5551862 | 15226 | |
8cdf0e15 | 15227 | if (!create_breakpoint (get_current_arch (), |
409873ef | 15228 | addr_str, |
e7e0cddf SS |
15229 | utp->cond_string, -1, NULL, |
15230 | 0 /* parse cond/thread */, | |
8cdf0e15 | 15231 | 0 /* tempflag */, |
0fb4aa4b | 15232 | utp->type /* type_wanted */, |
8cdf0e15 VP |
15233 | 0 /* Ignore count */, |
15234 | pending_break_support, | |
348d480f | 15235 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 15236 | 0 /* from_tty */, |
84f4c1fe | 15237 | utp->enabled /* enabled */, |
44f238bb PA |
15238 | 0 /* internal */, |
15239 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
fd9b8c24 PA |
15240 | return NULL; |
15241 | ||
409873ef | 15242 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
15243 | tp = get_tracepoint (tracepoint_count); |
15244 | gdb_assert (tp != NULL); | |
d5551862 | 15245 | |
00bf0b85 SS |
15246 | if (utp->pass > 0) |
15247 | { | |
8c042590 PM |
15248 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
15249 | tp->base.number); | |
00bf0b85 | 15250 | |
409873ef | 15251 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
15252 | } |
15253 | ||
409873ef SS |
15254 | /* If we have uploaded versions of the original commands, set up a |
15255 | special-purpose "reader" function and call the usual command line | |
15256 | reader, then pass the result to the breakpoint command-setting | |
15257 | function. */ | |
3149d8c1 | 15258 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 15259 | { |
409873ef | 15260 | struct command_line *cmd_list; |
00bf0b85 | 15261 | |
409873ef | 15262 | this_utp = utp; |
3149d8c1 | 15263 | next_cmd = 0; |
d5551862 | 15264 | |
409873ef SS |
15265 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
15266 | ||
d9b3f62e | 15267 | breakpoint_set_commands (&tp->base, cmd_list); |
00bf0b85 | 15268 | } |
3149d8c1 SS |
15269 | else if (!VEC_empty (char_ptr, utp->actions) |
15270 | || !VEC_empty (char_ptr, utp->step_actions)) | |
3e43a32a MS |
15271 | warning (_("Uploaded tracepoint %d actions " |
15272 | "have no source form, ignoring them"), | |
409873ef | 15273 | utp->number); |
00bf0b85 | 15274 | |
f196051f SS |
15275 | /* Copy any status information that might be available. */ |
15276 | tp->base.hit_count = utp->hit_count; | |
15277 | tp->traceframe_usage = utp->traceframe_usage; | |
15278 | ||
00bf0b85 | 15279 | return tp; |
d9b3f62e | 15280 | } |
00bf0b85 | 15281 | |
1042e4c0 SS |
15282 | /* Print information on tracepoint number TPNUM_EXP, or all if |
15283 | omitted. */ | |
15284 | ||
15285 | static void | |
e5a67952 | 15286 | tracepoints_info (char *args, int from_tty) |
1042e4c0 | 15287 | { |
79a45e25 | 15288 | struct ui_out *uiout = current_uiout; |
e5a67952 | 15289 | int num_printed; |
1042e4c0 | 15290 | |
e5a67952 | 15291 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
15292 | |
15293 | if (num_printed == 0) | |
1042e4c0 | 15294 | { |
e5a67952 | 15295 | if (args == NULL || *args == '\0') |
d77f58be SS |
15296 | ui_out_message (uiout, 0, "No tracepoints.\n"); |
15297 | else | |
e5a67952 | 15298 | ui_out_message (uiout, 0, "No tracepoint matching '%s'.\n", args); |
1042e4c0 | 15299 | } |
ad443146 SS |
15300 | |
15301 | default_collect_info (); | |
1042e4c0 SS |
15302 | } |
15303 | ||
4a64f543 | 15304 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
15305 | Not supported by all targets. */ |
15306 | static void | |
15307 | enable_trace_command (char *args, int from_tty) | |
15308 | { | |
15309 | enable_command (args, from_tty); | |
15310 | } | |
15311 | ||
4a64f543 | 15312 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
15313 | Not supported by all targets. */ |
15314 | static void | |
15315 | disable_trace_command (char *args, int from_tty) | |
15316 | { | |
15317 | disable_command (args, from_tty); | |
15318 | } | |
15319 | ||
4a64f543 | 15320 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 SS |
15321 | static void |
15322 | delete_trace_command (char *arg, int from_tty) | |
15323 | { | |
35df4500 | 15324 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
15325 | |
15326 | dont_repeat (); | |
15327 | ||
15328 | if (arg == 0) | |
15329 | { | |
15330 | int breaks_to_delete = 0; | |
15331 | ||
15332 | /* Delete all breakpoints if no argument. | |
15333 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
15334 | have to be deleted with an explicit breakpoint number |
15335 | argument. */ | |
1042e4c0 | 15336 | ALL_TRACEPOINTS (b) |
46c6471b | 15337 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
15338 | { |
15339 | breaks_to_delete = 1; | |
15340 | break; | |
15341 | } | |
1042e4c0 SS |
15342 | |
15343 | /* Ask user only if there are some breakpoints to delete. */ | |
15344 | if (!from_tty | |
15345 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
15346 | { | |
35df4500 | 15347 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 15348 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 15349 | delete_breakpoint (b); |
1042e4c0 SS |
15350 | } |
15351 | } | |
15352 | else | |
51be5b68 | 15353 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
1042e4c0 SS |
15354 | } |
15355 | ||
197f0a60 TT |
15356 | /* Helper function for trace_pass_command. */ |
15357 | ||
15358 | static void | |
d9b3f62e | 15359 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 15360 | { |
d9b3f62e | 15361 | tp->pass_count = count; |
6f6484cd | 15362 | observer_notify_breakpoint_modified (&tp->base); |
197f0a60 TT |
15363 | if (from_tty) |
15364 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
d9b3f62e | 15365 | tp->base.number, count); |
197f0a60 TT |
15366 | } |
15367 | ||
1042e4c0 SS |
15368 | /* Set passcount for tracepoint. |
15369 | ||
15370 | First command argument is passcount, second is tracepoint number. | |
15371 | If tracepoint number omitted, apply to most recently defined. | |
15372 | Also accepts special argument "all". */ | |
15373 | ||
15374 | static void | |
15375 | trace_pass_command (char *args, int from_tty) | |
15376 | { | |
d9b3f62e | 15377 | struct tracepoint *t1; |
1042e4c0 | 15378 | unsigned int count; |
1042e4c0 SS |
15379 | |
15380 | if (args == 0 || *args == 0) | |
3e43a32a MS |
15381 | error (_("passcount command requires an " |
15382 | "argument (count + optional TP num)")); | |
1042e4c0 | 15383 | |
4a64f543 | 15384 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 15385 | |
529480d0 | 15386 | args = skip_spaces (args); |
1042e4c0 SS |
15387 | if (*args && strncasecmp (args, "all", 3) == 0) |
15388 | { | |
d9b3f62e PA |
15389 | struct breakpoint *b; |
15390 | ||
1042e4c0 | 15391 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
15392 | if (*args) |
15393 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 15394 | |
d9b3f62e | 15395 | ALL_TRACEPOINTS (b) |
197f0a60 | 15396 | { |
d9b3f62e | 15397 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
15398 | trace_pass_set_count (t1, count, from_tty); |
15399 | } | |
15400 | } | |
15401 | else if (*args == '\0') | |
1042e4c0 | 15402 | { |
197f0a60 | 15403 | t1 = get_tracepoint_by_number (&args, NULL, 1); |
1042e4c0 | 15404 | if (t1) |
197f0a60 TT |
15405 | trace_pass_set_count (t1, count, from_tty); |
15406 | } | |
15407 | else | |
15408 | { | |
15409 | struct get_number_or_range_state state; | |
15410 | ||
15411 | init_number_or_range (&state, args); | |
15412 | while (!state.finished) | |
1042e4c0 | 15413 | { |
197f0a60 TT |
15414 | t1 = get_tracepoint_by_number (&args, &state, 1); |
15415 | if (t1) | |
15416 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
15417 | } |
15418 | } | |
1042e4c0 SS |
15419 | } |
15420 | ||
d9b3f62e | 15421 | struct tracepoint * |
1042e4c0 SS |
15422 | get_tracepoint (int num) |
15423 | { | |
15424 | struct breakpoint *t; | |
15425 | ||
15426 | ALL_TRACEPOINTS (t) | |
15427 | if (t->number == num) | |
d9b3f62e | 15428 | return (struct tracepoint *) t; |
1042e4c0 SS |
15429 | |
15430 | return NULL; | |
15431 | } | |
15432 | ||
d5551862 SS |
15433 | /* Find the tracepoint with the given target-side number (which may be |
15434 | different from the tracepoint number after disconnecting and | |
15435 | reconnecting). */ | |
15436 | ||
d9b3f62e | 15437 | struct tracepoint * |
d5551862 SS |
15438 | get_tracepoint_by_number_on_target (int num) |
15439 | { | |
d9b3f62e | 15440 | struct breakpoint *b; |
d5551862 | 15441 | |
d9b3f62e PA |
15442 | ALL_TRACEPOINTS (b) |
15443 | { | |
15444 | struct tracepoint *t = (struct tracepoint *) b; | |
15445 | ||
15446 | if (t->number_on_target == num) | |
15447 | return t; | |
15448 | } | |
d5551862 SS |
15449 | |
15450 | return NULL; | |
15451 | } | |
15452 | ||
1042e4c0 | 15453 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 TT |
15454 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
15455 | If OPTIONAL_P is true, then if the argument is missing, the most | |
1042e4c0 | 15456 | recent tracepoint (tracepoint_count) is returned. */ |
d9b3f62e | 15457 | struct tracepoint * |
197f0a60 TT |
15458 | get_tracepoint_by_number (char **arg, |
15459 | struct get_number_or_range_state *state, | |
15460 | int optional_p) | |
1042e4c0 | 15461 | { |
1042e4c0 SS |
15462 | struct breakpoint *t; |
15463 | int tpnum; | |
15464 | char *instring = arg == NULL ? NULL : *arg; | |
15465 | ||
197f0a60 TT |
15466 | if (state) |
15467 | { | |
15468 | gdb_assert (!state->finished); | |
15469 | tpnum = get_number_or_range (state); | |
15470 | } | |
15471 | else if (arg == NULL || *arg == NULL || ! **arg) | |
1042e4c0 SS |
15472 | { |
15473 | if (optional_p) | |
15474 | tpnum = tracepoint_count; | |
15475 | else | |
15476 | error_no_arg (_("tracepoint number")); | |
15477 | } | |
15478 | else | |
197f0a60 | 15479 | tpnum = get_number (arg); |
1042e4c0 SS |
15480 | |
15481 | if (tpnum <= 0) | |
15482 | { | |
15483 | if (instring && *instring) | |
15484 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
15485 | instring); | |
15486 | else | |
3e43a32a MS |
15487 | printf_filtered (_("Tracepoint argument missing " |
15488 | "and no previous tracepoint\n")); | |
1042e4c0 SS |
15489 | return NULL; |
15490 | } | |
15491 | ||
15492 | ALL_TRACEPOINTS (t) | |
15493 | if (t->number == tpnum) | |
15494 | { | |
d9b3f62e | 15495 | return (struct tracepoint *) t; |
1042e4c0 SS |
15496 | } |
15497 | ||
1042e4c0 SS |
15498 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
15499 | return NULL; | |
15500 | } | |
15501 | ||
d9b3f62e PA |
15502 | void |
15503 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
15504 | { | |
15505 | if (b->thread != -1) | |
15506 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
15507 | ||
15508 | if (b->task != 0) | |
15509 | fprintf_unfiltered (fp, " task %d", b->task); | |
15510 | ||
15511 | fprintf_unfiltered (fp, "\n"); | |
15512 | } | |
15513 | ||
6149aea9 PA |
15514 | /* Save information on user settable breakpoints (watchpoints, etc) to |
15515 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
15516 | on each breakpoint and only include the ones for which it returns | |
15517 | non-zero. */ | |
15518 | ||
1042e4c0 | 15519 | static void |
6149aea9 PA |
15520 | save_breakpoints (char *filename, int from_tty, |
15521 | int (*filter) (const struct breakpoint *)) | |
1042e4c0 SS |
15522 | { |
15523 | struct breakpoint *tp; | |
6149aea9 | 15524 | int any = 0; |
a7bdde9e | 15525 | char *pathname; |
1042e4c0 | 15526 | struct cleanup *cleanup; |
a7bdde9e | 15527 | struct ui_file *fp; |
6149aea9 | 15528 | int extra_trace_bits = 0; |
1042e4c0 | 15529 | |
6149aea9 PA |
15530 | if (filename == 0 || *filename == 0) |
15531 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
15532 | |
15533 | /* See if we have anything to save. */ | |
6149aea9 | 15534 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15535 | { |
6149aea9 | 15536 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15537 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
15538 | continue; |
15539 | ||
15540 | /* If we have a filter, only save the breakpoints it accepts. */ | |
15541 | if (filter && !filter (tp)) | |
15542 | continue; | |
15543 | ||
15544 | any = 1; | |
15545 | ||
15546 | if (is_tracepoint (tp)) | |
15547 | { | |
15548 | extra_trace_bits = 1; | |
15549 | ||
15550 | /* We can stop searching. */ | |
15551 | break; | |
15552 | } | |
1042e4c0 | 15553 | } |
6149aea9 PA |
15554 | |
15555 | if (!any) | |
1042e4c0 | 15556 | { |
6149aea9 | 15557 | warning (_("Nothing to save.")); |
1042e4c0 SS |
15558 | return; |
15559 | } | |
15560 | ||
6149aea9 | 15561 | pathname = tilde_expand (filename); |
1042e4c0 | 15562 | cleanup = make_cleanup (xfree, pathname); |
a7bdde9e | 15563 | fp = gdb_fopen (pathname, "w"); |
059fb39f | 15564 | if (!fp) |
6149aea9 PA |
15565 | error (_("Unable to open file '%s' for saving (%s)"), |
15566 | filename, safe_strerror (errno)); | |
a7bdde9e | 15567 | make_cleanup_ui_file_delete (fp); |
8bf6485c | 15568 | |
6149aea9 PA |
15569 | if (extra_trace_bits) |
15570 | save_trace_state_variables (fp); | |
8bf6485c | 15571 | |
6149aea9 | 15572 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15573 | { |
6149aea9 | 15574 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15575 | if (!user_breakpoint_p (tp)) |
6149aea9 | 15576 | continue; |
8bf6485c | 15577 | |
6149aea9 PA |
15578 | /* If we have a filter, only save the breakpoints it accepts. */ |
15579 | if (filter && !filter (tp)) | |
15580 | continue; | |
15581 | ||
348d480f | 15582 | tp->ops->print_recreate (tp, fp); |
1042e4c0 | 15583 | |
6149aea9 PA |
15584 | /* Note, we can't rely on tp->number for anything, as we can't |
15585 | assume the recreated breakpoint numbers will match. Use $bpnum | |
15586 | instead. */ | |
15587 | ||
15588 | if (tp->cond_string) | |
15589 | fprintf_unfiltered (fp, " condition $bpnum %s\n", tp->cond_string); | |
15590 | ||
15591 | if (tp->ignore_count) | |
15592 | fprintf_unfiltered (fp, " ignore $bpnum %d\n", tp->ignore_count); | |
15593 | ||
a7bdde9e | 15594 | if (tp->commands) |
1042e4c0 | 15595 | { |
a7bdde9e VP |
15596 | volatile struct gdb_exception ex; |
15597 | ||
6149aea9 | 15598 | fprintf_unfiltered (fp, " commands\n"); |
a7bdde9e | 15599 | |
79a45e25 | 15600 | ui_out_redirect (current_uiout, fp); |
14dba4b4 | 15601 | TRY_CATCH (ex, RETURN_MASK_ALL) |
1042e4c0 | 15602 | { |
79a45e25 | 15603 | print_command_lines (current_uiout, tp->commands->commands, 2); |
a7bdde9e | 15604 | } |
79a45e25 | 15605 | ui_out_redirect (current_uiout, NULL); |
1042e4c0 | 15606 | |
a7bdde9e VP |
15607 | if (ex.reason < 0) |
15608 | throw_exception (ex); | |
1042e4c0 | 15609 | |
a7bdde9e | 15610 | fprintf_unfiltered (fp, " end\n"); |
1042e4c0 | 15611 | } |
6149aea9 PA |
15612 | |
15613 | if (tp->enable_state == bp_disabled) | |
15614 | fprintf_unfiltered (fp, "disable\n"); | |
15615 | ||
15616 | /* If this is a multi-location breakpoint, check if the locations | |
15617 | should be individually disabled. Watchpoint locations are | |
15618 | special, and not user visible. */ | |
15619 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15620 | { | |
15621 | struct bp_location *loc; | |
15622 | int n = 1; | |
15623 | ||
15624 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
15625 | if (!loc->enabled) | |
15626 | fprintf_unfiltered (fp, "disable $bpnum.%d\n", n); | |
15627 | } | |
1042e4c0 | 15628 | } |
8bf6485c | 15629 | |
6149aea9 | 15630 | if (extra_trace_bits && *default_collect) |
8bf6485c SS |
15631 | fprintf_unfiltered (fp, "set default-collect %s\n", default_collect); |
15632 | ||
1042e4c0 SS |
15633 | do_cleanups (cleanup); |
15634 | if (from_tty) | |
6149aea9 PA |
15635 | printf_filtered (_("Saved to file '%s'.\n"), filename); |
15636 | } | |
15637 | ||
15638 | /* The `save breakpoints' command. */ | |
15639 | ||
15640 | static void | |
15641 | save_breakpoints_command (char *args, int from_tty) | |
15642 | { | |
15643 | save_breakpoints (args, from_tty, NULL); | |
15644 | } | |
15645 | ||
15646 | /* The `save tracepoints' command. */ | |
15647 | ||
15648 | static void | |
15649 | save_tracepoints_command (char *args, int from_tty) | |
15650 | { | |
15651 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15652 | } |
15653 | ||
15654 | /* Create a vector of all tracepoints. */ | |
15655 | ||
15656 | VEC(breakpoint_p) * | |
eeae04df | 15657 | all_tracepoints (void) |
1042e4c0 SS |
15658 | { |
15659 | VEC(breakpoint_p) *tp_vec = 0; | |
15660 | struct breakpoint *tp; | |
15661 | ||
15662 | ALL_TRACEPOINTS (tp) | |
15663 | { | |
15664 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
15665 | } | |
15666 | ||
15667 | return tp_vec; | |
15668 | } | |
15669 | ||
c906108c | 15670 | \f |
4a64f543 MS |
15671 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15672 | commands. It is defined as a macro to prevent duplication. | |
15673 | COMMAND should be a string constant containing the name of the | |
15674 | command. */ | |
31e2b00f | 15675 | #define BREAK_ARGS_HELP(command) \ |
fb7b5af4 SDJ |
15676 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\ |
15677 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ | |
15678 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
15679 | guessed probe type) or `-probe-stap' (for a SystemTap probe).\n\ | |
31e2b00f AS |
15680 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ |
15681 | If a line number is specified, break at start of code for that line.\n\ | |
15682 | If a function is specified, break at start of code for that function.\n\ | |
15683 | If an address is specified, break at that exact address.\n\ | |
dc10affe PA |
15684 | With no LOCATION, uses current execution address of the selected\n\ |
15685 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15686 | \n\ |
15687 | THREADNUM is the number from \"info threads\".\n\ | |
15688 | CONDITION is a boolean expression.\n\ | |
15689 | \n\ | |
d41c0fc8 PA |
15690 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15691 | conditions are different.\n\ | |
31e2b00f AS |
15692 | \n\ |
15693 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15694 | ||
44feb3ce TT |
15695 | /* List of subcommands for "catch". */ |
15696 | static struct cmd_list_element *catch_cmdlist; | |
15697 | ||
15698 | /* List of subcommands for "tcatch". */ | |
15699 | static struct cmd_list_element *tcatch_cmdlist; | |
15700 | ||
9ac4176b | 15701 | void |
44feb3ce TT |
15702 | add_catch_command (char *name, char *docstring, |
15703 | void (*sfunc) (char *args, int from_tty, | |
15704 | struct cmd_list_element *command), | |
625e8578 | 15705 | completer_ftype *completer, |
44feb3ce TT |
15706 | void *user_data_catch, |
15707 | void *user_data_tcatch) | |
15708 | { | |
15709 | struct cmd_list_element *command; | |
15710 | ||
15711 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
15712 | &catch_cmdlist); | |
15713 | set_cmd_sfunc (command, sfunc); | |
15714 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15715 | set_cmd_completer (command, completer); |
44feb3ce TT |
15716 | |
15717 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
15718 | &tcatch_cmdlist); | |
15719 | set_cmd_sfunc (command, sfunc); | |
15720 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15721 | set_cmd_completer (command, completer); |
44feb3ce TT |
15722 | } |
15723 | ||
6c95b8df | 15724 | static void |
a79b8f6e | 15725 | clear_syscall_counts (struct inferior *inf) |
6c95b8df | 15726 | { |
fa3064dd YQ |
15727 | struct catch_syscall_inferior_data *inf_data |
15728 | = get_catch_syscall_inferior_data (inf); | |
15729 | ||
15730 | inf_data->total_syscalls_count = 0; | |
15731 | inf_data->any_syscall_count = 0; | |
15732 | VEC_free (int, inf_data->syscalls_counts); | |
6c95b8df PA |
15733 | } |
15734 | ||
6149aea9 PA |
15735 | static void |
15736 | save_command (char *arg, int from_tty) | |
15737 | { | |
3e43a32a MS |
15738 | printf_unfiltered (_("\"save\" must be followed by " |
15739 | "the name of a save subcommand.\n")); | |
6149aea9 PA |
15740 | help_list (save_cmdlist, "save ", -1, gdb_stdout); |
15741 | } | |
15742 | ||
84f4c1fe PM |
15743 | struct breakpoint * |
15744 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
15745 | void *data) | |
15746 | { | |
35df4500 | 15747 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15748 | |
35df4500 | 15749 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
15750 | { |
15751 | if ((*callback) (b, data)) | |
15752 | return b; | |
15753 | } | |
15754 | ||
15755 | return NULL; | |
15756 | } | |
15757 | ||
0574c78f GB |
15758 | /* Zero if any of the breakpoint's locations could be a location where |
15759 | functions have been inlined, nonzero otherwise. */ | |
15760 | ||
15761 | static int | |
15762 | is_non_inline_function (struct breakpoint *b) | |
15763 | { | |
15764 | /* The shared library event breakpoint is set on the address of a | |
15765 | non-inline function. */ | |
15766 | if (b->type == bp_shlib_event) | |
15767 | return 1; | |
15768 | ||
15769 | return 0; | |
15770 | } | |
15771 | ||
15772 | /* Nonzero if the specified PC cannot be a location where functions | |
15773 | have been inlined. */ | |
15774 | ||
15775 | int | |
09ac7c10 TT |
15776 | pc_at_non_inline_function (struct address_space *aspace, CORE_ADDR pc, |
15777 | const struct target_waitstatus *ws) | |
0574c78f GB |
15778 | { |
15779 | struct breakpoint *b; | |
15780 | struct bp_location *bl; | |
15781 | ||
15782 | ALL_BREAKPOINTS (b) | |
15783 | { | |
15784 | if (!is_non_inline_function (b)) | |
15785 | continue; | |
15786 | ||
15787 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15788 | { | |
15789 | if (!bl->shlib_disabled | |
09ac7c10 | 15790 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15791 | return 1; |
15792 | } | |
15793 | } | |
15794 | ||
15795 | return 0; | |
15796 | } | |
15797 | ||
2f202fde JK |
15798 | /* Remove any references to OBJFILE which is going to be freed. */ |
15799 | ||
15800 | void | |
15801 | breakpoint_free_objfile (struct objfile *objfile) | |
15802 | { | |
15803 | struct bp_location **locp, *loc; | |
15804 | ||
15805 | ALL_BP_LOCATIONS (loc, locp) | |
15806 | if (loc->symtab != NULL && loc->symtab->objfile == objfile) | |
15807 | loc->symtab = NULL; | |
15808 | } | |
15809 | ||
2060206e PA |
15810 | void |
15811 | initialize_breakpoint_ops (void) | |
15812 | { | |
15813 | static int initialized = 0; | |
15814 | ||
15815 | struct breakpoint_ops *ops; | |
15816 | ||
15817 | if (initialized) | |
15818 | return; | |
15819 | initialized = 1; | |
15820 | ||
15821 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15822 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15823 | internal and momentary breakpoints, etc.). */ | |
15824 | ops = &bkpt_base_breakpoint_ops; | |
15825 | *ops = base_breakpoint_ops; | |
15826 | ops->re_set = bkpt_re_set; | |
15827 | ops->insert_location = bkpt_insert_location; | |
15828 | ops->remove_location = bkpt_remove_location; | |
15829 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
983af33b SDJ |
15830 | ops->create_sals_from_address = bkpt_create_sals_from_address; |
15831 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; | |
15832 | ops->decode_linespec = bkpt_decode_linespec; | |
2060206e PA |
15833 | |
15834 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15835 | ops = &bkpt_breakpoint_ops; | |
15836 | *ops = bkpt_base_breakpoint_ops; | |
15837 | ops->re_set = bkpt_re_set; | |
15838 | ops->resources_needed = bkpt_resources_needed; | |
15839 | ops->print_it = bkpt_print_it; | |
15840 | ops->print_mention = bkpt_print_mention; | |
15841 | ops->print_recreate = bkpt_print_recreate; | |
15842 | ||
15843 | /* Ranged breakpoints. */ | |
15844 | ops = &ranged_breakpoint_ops; | |
15845 | *ops = bkpt_breakpoint_ops; | |
15846 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15847 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15848 | ops->print_it = print_it_ranged_breakpoint; | |
15849 | ops->print_one = print_one_ranged_breakpoint; | |
15850 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15851 | ops->print_mention = print_mention_ranged_breakpoint; | |
15852 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15853 | ||
15854 | /* Internal breakpoints. */ | |
15855 | ops = &internal_breakpoint_ops; | |
15856 | *ops = bkpt_base_breakpoint_ops; | |
15857 | ops->re_set = internal_bkpt_re_set; | |
15858 | ops->check_status = internal_bkpt_check_status; | |
15859 | ops->print_it = internal_bkpt_print_it; | |
15860 | ops->print_mention = internal_bkpt_print_mention; | |
15861 | ||
15862 | /* Momentary breakpoints. */ | |
15863 | ops = &momentary_breakpoint_ops; | |
15864 | *ops = bkpt_base_breakpoint_ops; | |
15865 | ops->re_set = momentary_bkpt_re_set; | |
15866 | ops->check_status = momentary_bkpt_check_status; | |
15867 | ops->print_it = momentary_bkpt_print_it; | |
15868 | ops->print_mention = momentary_bkpt_print_mention; | |
15869 | ||
e2e4d78b JK |
15870 | /* Momentary breakpoints for bp_longjmp and bp_exception. */ |
15871 | ops = &longjmp_breakpoint_ops; | |
15872 | *ops = momentary_breakpoint_ops; | |
15873 | ops->dtor = longjmp_bkpt_dtor; | |
15874 | ||
55aa24fb SDJ |
15875 | /* Probe breakpoints. */ |
15876 | ops = &bkpt_probe_breakpoint_ops; | |
15877 | *ops = bkpt_breakpoint_ops; | |
15878 | ops->insert_location = bkpt_probe_insert_location; | |
15879 | ops->remove_location = bkpt_probe_remove_location; | |
15880 | ops->create_sals_from_address = bkpt_probe_create_sals_from_address; | |
15881 | ops->decode_linespec = bkpt_probe_decode_linespec; | |
15882 | ||
2060206e PA |
15883 | /* GNU v3 exception catchpoints. */ |
15884 | ops = &gnu_v3_exception_catchpoint_ops; | |
15885 | *ops = bkpt_breakpoint_ops; | |
15886 | ops->print_it = print_it_exception_catchpoint; | |
15887 | ops->print_one = print_one_exception_catchpoint; | |
15888 | ops->print_mention = print_mention_exception_catchpoint; | |
15889 | ops->print_recreate = print_recreate_exception_catchpoint; | |
15890 | ||
15891 | /* Watchpoints. */ | |
15892 | ops = &watchpoint_breakpoint_ops; | |
15893 | *ops = base_breakpoint_ops; | |
3a5c3e22 | 15894 | ops->dtor = dtor_watchpoint; |
2060206e PA |
15895 | ops->re_set = re_set_watchpoint; |
15896 | ops->insert_location = insert_watchpoint; | |
15897 | ops->remove_location = remove_watchpoint; | |
15898 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15899 | ops->check_status = check_status_watchpoint; | |
15900 | ops->resources_needed = resources_needed_watchpoint; | |
15901 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15902 | ops->print_it = print_it_watchpoint; | |
15903 | ops->print_mention = print_mention_watchpoint; | |
15904 | ops->print_recreate = print_recreate_watchpoint; | |
15905 | ||
15906 | /* Masked watchpoints. */ | |
15907 | ops = &masked_watchpoint_breakpoint_ops; | |
15908 | *ops = watchpoint_breakpoint_ops; | |
15909 | ops->insert_location = insert_masked_watchpoint; | |
15910 | ops->remove_location = remove_masked_watchpoint; | |
15911 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15912 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15913 | ops->print_it = print_it_masked_watchpoint; | |
15914 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15915 | ops->print_mention = print_mention_masked_watchpoint; | |
15916 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15917 | ||
15918 | /* Tracepoints. */ | |
15919 | ops = &tracepoint_breakpoint_ops; | |
15920 | *ops = base_breakpoint_ops; | |
15921 | ops->re_set = tracepoint_re_set; | |
15922 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15923 | ops->print_one_detail = tracepoint_print_one_detail; | |
15924 | ops->print_mention = tracepoint_print_mention; | |
15925 | ops->print_recreate = tracepoint_print_recreate; | |
983af33b SDJ |
15926 | ops->create_sals_from_address = tracepoint_create_sals_from_address; |
15927 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; | |
15928 | ops->decode_linespec = tracepoint_decode_linespec; | |
15929 | ||
55aa24fb SDJ |
15930 | /* Probe tracepoints. */ |
15931 | ops = &tracepoint_probe_breakpoint_ops; | |
15932 | *ops = tracepoint_breakpoint_ops; | |
15933 | ops->create_sals_from_address = tracepoint_probe_create_sals_from_address; | |
15934 | ops->decode_linespec = tracepoint_probe_decode_linespec; | |
15935 | ||
983af33b SDJ |
15936 | /* Static tracepoints with marker (`-m'). */ |
15937 | ops = &strace_marker_breakpoint_ops; | |
15938 | *ops = tracepoint_breakpoint_ops; | |
15939 | ops->create_sals_from_address = strace_marker_create_sals_from_address; | |
15940 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; | |
15941 | ops->decode_linespec = strace_marker_decode_linespec; | |
2060206e PA |
15942 | |
15943 | /* Fork catchpoints. */ | |
15944 | ops = &catch_fork_breakpoint_ops; | |
15945 | *ops = base_breakpoint_ops; | |
15946 | ops->insert_location = insert_catch_fork; | |
15947 | ops->remove_location = remove_catch_fork; | |
15948 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15949 | ops->print_it = print_it_catch_fork; | |
15950 | ops->print_one = print_one_catch_fork; | |
15951 | ops->print_mention = print_mention_catch_fork; | |
15952 | ops->print_recreate = print_recreate_catch_fork; | |
15953 | ||
15954 | /* Vfork catchpoints. */ | |
15955 | ops = &catch_vfork_breakpoint_ops; | |
15956 | *ops = base_breakpoint_ops; | |
15957 | ops->insert_location = insert_catch_vfork; | |
15958 | ops->remove_location = remove_catch_vfork; | |
15959 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15960 | ops->print_it = print_it_catch_vfork; | |
15961 | ops->print_one = print_one_catch_vfork; | |
15962 | ops->print_mention = print_mention_catch_vfork; | |
15963 | ops->print_recreate = print_recreate_catch_vfork; | |
15964 | ||
15965 | /* Exec catchpoints. */ | |
15966 | ops = &catch_exec_breakpoint_ops; | |
15967 | *ops = base_breakpoint_ops; | |
15968 | ops->dtor = dtor_catch_exec; | |
15969 | ops->insert_location = insert_catch_exec; | |
15970 | ops->remove_location = remove_catch_exec; | |
15971 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15972 | ops->print_it = print_it_catch_exec; | |
15973 | ops->print_one = print_one_catch_exec; | |
15974 | ops->print_mention = print_mention_catch_exec; | |
15975 | ops->print_recreate = print_recreate_catch_exec; | |
15976 | ||
15977 | /* Syscall catchpoints. */ | |
15978 | ops = &catch_syscall_breakpoint_ops; | |
15979 | *ops = base_breakpoint_ops; | |
15980 | ops->dtor = dtor_catch_syscall; | |
15981 | ops->insert_location = insert_catch_syscall; | |
15982 | ops->remove_location = remove_catch_syscall; | |
15983 | ops->breakpoint_hit = breakpoint_hit_catch_syscall; | |
15984 | ops->print_it = print_it_catch_syscall; | |
15985 | ops->print_one = print_one_catch_syscall; | |
15986 | ops->print_mention = print_mention_catch_syscall; | |
15987 | ops->print_recreate = print_recreate_catch_syscall; | |
edcc5120 TT |
15988 | |
15989 | /* Solib-related catchpoints. */ | |
15990 | ops = &catch_solib_breakpoint_ops; | |
15991 | *ops = base_breakpoint_ops; | |
15992 | ops->dtor = dtor_catch_solib; | |
15993 | ops->insert_location = insert_catch_solib; | |
15994 | ops->remove_location = remove_catch_solib; | |
15995 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15996 | ops->check_status = check_status_catch_solib; | |
15997 | ops->print_it = print_it_catch_solib; | |
15998 | ops->print_one = print_one_catch_solib; | |
15999 | ops->print_mention = print_mention_catch_solib; | |
16000 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
16001 | |
16002 | ops = &dprintf_breakpoint_ops; | |
16003 | *ops = bkpt_base_breakpoint_ops; | |
16004 | ops->re_set = bkpt_re_set; | |
16005 | ops->resources_needed = bkpt_resources_needed; | |
16006 | ops->print_it = bkpt_print_it; | |
16007 | ops->print_mention = bkpt_print_mention; | |
16008 | ops->print_recreate = bkpt_print_recreate; | |
2060206e PA |
16009 | } |
16010 | ||
8bfd80db YQ |
16011 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
16012 | ||
16013 | static struct cmd_list_element *enablebreaklist = NULL; | |
16014 | ||
c906108c | 16015 | void |
fba45db2 | 16016 | _initialize_breakpoint (void) |
c906108c SS |
16017 | { |
16018 | struct cmd_list_element *c; | |
16019 | ||
2060206e PA |
16020 | initialize_breakpoint_ops (); |
16021 | ||
84acb35a | 16022 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
6c95b8df | 16023 | observer_attach_inferior_exit (clear_syscall_counts); |
1f3b5d1b | 16024 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 16025 | |
55aa24fb SDJ |
16026 | breakpoint_objfile_key |
16027 | = register_objfile_data_with_cleanup (NULL, free_breakpoint_probes); | |
17450429 | 16028 | |
fa3064dd | 16029 | catch_syscall_inferior_data |
8e260fc0 TT |
16030 | = register_inferior_data_with_cleanup (NULL, |
16031 | catch_syscall_inferior_data_cleanup); | |
fa3064dd | 16032 | |
c906108c SS |
16033 | breakpoint_chain = 0; |
16034 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
16035 | before a breakpoint is set. */ | |
16036 | breakpoint_count = 0; | |
16037 | ||
1042e4c0 SS |
16038 | tracepoint_count = 0; |
16039 | ||
1bedd215 AC |
16040 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
16041 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
16042 | Usage is `ignore N COUNT'.")); | |
c906108c | 16043 | if (xdb_commands) |
c5aa993b | 16044 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 16045 | |
1bedd215 AC |
16046 | add_com ("commands", class_breakpoint, commands_command, _("\ |
16047 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
16048 | Give breakpoint number as argument after \"commands\".\n\ |
16049 | With no argument, the targeted breakpoint is the last one set.\n\ | |
16050 | The commands themselves follow starting on the next line.\n\ | |
16051 | Type a line containing \"end\" to indicate the end of them.\n\ | |
16052 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 16053 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 16054 | |
d55637df | 16055 | c = add_com ("condition", class_breakpoint, condition_command, _("\ |
1bedd215 | 16056 | Specify breakpoint number N to break only if COND is true.\n\ |
c906108c | 16057 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 16058 | expression to be evaluated whenever breakpoint N is reached.")); |
d55637df | 16059 | set_cmd_completer (c, condition_completer); |
c906108c | 16060 | |
1bedd215 | 16061 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 16062 | Set a temporary breakpoint.\n\ |
c906108c SS |
16063 | Like \"break\" except the breakpoint is only temporary,\n\ |
16064 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
16065 | by using \"enable delete\" on the breakpoint number.\n\ |
16066 | \n" | |
16067 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 16068 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 16069 | |
1bedd215 | 16070 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 16071 | Set a hardware assisted breakpoint.\n\ |
c906108c | 16072 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
16073 | some target hardware may not have this support.\n\ |
16074 | \n" | |
16075 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 16076 | set_cmd_completer (c, location_completer); |
c906108c | 16077 | |
1bedd215 | 16078 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 16079 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 16080 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
16081 | so it will be deleted when hit.\n\ |
16082 | \n" | |
16083 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 16084 | set_cmd_completer (c, location_completer); |
c906108c | 16085 | |
1bedd215 AC |
16086 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
16087 | Enable some breakpoints.\n\ | |
c906108c SS |
16088 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
16089 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
16090 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 16091 | With a subcommand you can enable temporarily."), |
c906108c SS |
16092 | &enablelist, "enable ", 1, &cmdlist); |
16093 | if (xdb_commands) | |
1bedd215 AC |
16094 | add_com ("ab", class_breakpoint, enable_command, _("\ |
16095 | Enable some breakpoints.\n\ | |
c906108c SS |
16096 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
16097 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
16098 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 16099 | With a subcommand you can enable temporarily.")); |
c906108c SS |
16100 | |
16101 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
16102 | ||
84951ab5 | 16103 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 16104 | Enable some breakpoints.\n\ |
c906108c SS |
16105 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
16106 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 16107 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 16108 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 16109 | |
1a966eab AC |
16110 | add_cmd ("once", no_class, enable_once_command, _("\ |
16111 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
16112 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
16113 | &enablebreaklist); |
16114 | ||
1a966eab AC |
16115 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
16116 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
16117 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
16118 | &enablebreaklist); |
16119 | ||
816338b5 SS |
16120 | add_cmd ("count", no_class, enable_count_command, _("\ |
16121 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
16122 | If a breakpoint is hit while enabled in this fashion,\n\ | |
16123 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
16124 | &enablebreaklist); | |
16125 | ||
1a966eab AC |
16126 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
16127 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
16128 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
16129 | &enablelist); |
16130 | ||
1a966eab AC |
16131 | add_cmd ("once", no_class, enable_once_command, _("\ |
16132 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
16133 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
816338b5 SS |
16134 | &enablelist); |
16135 | ||
16136 | add_cmd ("count", no_class, enable_count_command, _("\ | |
16137 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
16138 | If a breakpoint is hit while enabled in this fashion,\n\ | |
16139 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
16140 | &enablelist); |
16141 | ||
1bedd215 AC |
16142 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
16143 | Disable some breakpoints.\n\ | |
c906108c SS |
16144 | Arguments are breakpoint numbers with spaces in between.\n\ |
16145 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 16146 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
16147 | &disablelist, "disable ", 1, &cmdlist); |
16148 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
16149 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
16150 | if (xdb_commands) | |
1bedd215 AC |
16151 | add_com ("sb", class_breakpoint, disable_command, _("\ |
16152 | Disable some breakpoints.\n\ | |
c906108c SS |
16153 | Arguments are breakpoint numbers with spaces in between.\n\ |
16154 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 16155 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.")); |
c906108c | 16156 | |
1a966eab AC |
16157 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
16158 | Disable some breakpoints.\n\ | |
c906108c SS |
16159 | Arguments are breakpoint numbers with spaces in between.\n\ |
16160 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 16161 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 16162 | This command may be abbreviated \"disable\"."), |
c906108c SS |
16163 | &disablelist); |
16164 | ||
1bedd215 AC |
16165 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
16166 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
16167 | Arguments are breakpoint numbers with spaces in between.\n\ |
16168 | To delete all breakpoints, give no argument.\n\ | |
16169 | \n\ | |
16170 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 16171 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
16172 | &deletelist, "delete ", 1, &cmdlist); |
16173 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 16174 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 16175 | if (xdb_commands) |
1bedd215 AC |
16176 | add_com ("db", class_breakpoint, delete_command, _("\ |
16177 | Delete some breakpoints.\n\ | |
c906108c | 16178 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 16179 | To delete all breakpoints, give no argument.\n")); |
c906108c | 16180 | |
1a966eab AC |
16181 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
16182 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
16183 | Arguments are breakpoint numbers with spaces in between.\n\ |
16184 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 16185 | This command may be abbreviated \"delete\"."), |
c906108c SS |
16186 | &deletelist); |
16187 | ||
1bedd215 AC |
16188 | add_com ("clear", class_breakpoint, clear_command, _("\ |
16189 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
16190 | Argument may be line number, function name, or \"*\" and an address.\n\ |
16191 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
16192 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
16193 | If an address is specified, breakpoints at that address are cleared.\n\ |
16194 | \n\ | |
16195 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
16196 | is executing in.\n\ |
16197 | \n\ | |
1bedd215 | 16198 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 16199 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 16200 | |
1bedd215 | 16201 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
16202 | Set breakpoint at specified line or function.\n" |
16203 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 16204 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 16205 | |
c906108c SS |
16206 | add_com_alias ("b", "break", class_run, 1); |
16207 | add_com_alias ("br", "break", class_run, 1); | |
16208 | add_com_alias ("bre", "break", class_run, 1); | |
16209 | add_com_alias ("brea", "break", class_run, 1); | |
16210 | ||
7681d515 PM |
16211 | if (xdb_commands) |
16212 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
c906108c SS |
16213 | |
16214 | if (dbx_commands) | |
16215 | { | |
1bedd215 AC |
16216 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
16217 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
16218 | &stoplist, "stop ", 1, &cmdlist); |
16219 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 16220 | _("Break in function or address."), &stoplist); |
c5aa993b | 16221 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 16222 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
16223 | add_com ("status", class_info, breakpoints_info, _("\ |
16224 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
16225 | The \"Type\" column indicates one of:\n\ |
16226 | \tbreakpoint - normal breakpoint\n\ | |
16227 | \twatchpoint - watchpoint\n\ | |
16228 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
16229 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
16230 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
16231 | address and file/line number respectively.\n\ |
16232 | \n\ | |
16233 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16234 | are set to the address of the last breakpoint listed unless the command\n\ |
16235 | is prefixed with \"server \".\n\n\ | |
c906108c | 16236 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 16237 | breakpoint set.")); |
c906108c SS |
16238 | } |
16239 | ||
1bedd215 | 16240 | add_info ("breakpoints", breakpoints_info, _("\ |
e5a67952 | 16241 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
16242 | The \"Type\" column indicates one of:\n\ |
16243 | \tbreakpoint - normal breakpoint\n\ | |
16244 | \twatchpoint - watchpoint\n\ | |
16245 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
16246 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
16247 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
16248 | address and file/line number respectively.\n\ |
16249 | \n\ | |
16250 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16251 | are set to the address of the last breakpoint listed unless the command\n\ |
16252 | is prefixed with \"server \".\n\n\ | |
c906108c | 16253 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 16254 | breakpoint set.")); |
c906108c | 16255 | |
6b04bdb7 MS |
16256 | add_info_alias ("b", "breakpoints", 1); |
16257 | ||
c906108c | 16258 | if (xdb_commands) |
1bedd215 AC |
16259 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
16260 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
16261 | The \"Type\" column indicates one of:\n\ |
16262 | \tbreakpoint - normal breakpoint\n\ | |
16263 | \twatchpoint - watchpoint\n\ | |
16264 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
16265 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
16266 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
16267 | address and file/line number respectively.\n\ |
16268 | \n\ | |
16269 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16270 | are set to the address of the last breakpoint listed unless the command\n\ |
16271 | is prefixed with \"server \".\n\n\ | |
c906108c | 16272 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 16273 | breakpoint set.")); |
c906108c | 16274 | |
1a966eab AC |
16275 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
16276 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
16277 | The \"Type\" column indicates one of:\n\ |
16278 | \tbreakpoint - normal breakpoint\n\ | |
16279 | \twatchpoint - watchpoint\n\ | |
16280 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
16281 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
16282 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
16283 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
16284 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
16285 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
16286 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
16287 | address and file/line number respectively.\n\ |
16288 | \n\ | |
16289 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16290 | are set to the address of the last breakpoint listed unless the command\n\ |
16291 | is prefixed with \"server \".\n\n\ | |
c906108c | 16292 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 16293 | breakpoint set."), |
c906108c SS |
16294 | &maintenanceinfolist); |
16295 | ||
44feb3ce TT |
16296 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
16297 | Set catchpoints to catch events."), | |
16298 | &catch_cmdlist, "catch ", | |
16299 | 0/*allow-unknown*/, &cmdlist); | |
16300 | ||
16301 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
16302 | Set temporary catchpoints to catch events."), | |
16303 | &tcatch_cmdlist, "tcatch ", | |
16304 | 0/*allow-unknown*/, &cmdlist); | |
16305 | ||
16306 | /* Add catch and tcatch sub-commands. */ | |
16307 | add_catch_command ("catch", _("\ | |
88e7d25d | 16308 | Catch an exception, when caught."), |
44feb3ce | 16309 | catch_catch_command, |
a96d9b2e | 16310 | NULL, |
44feb3ce TT |
16311 | CATCH_PERMANENT, |
16312 | CATCH_TEMPORARY); | |
16313 | add_catch_command ("throw", _("\ | |
88e7d25d | 16314 | Catch an exception, when thrown."), |
44feb3ce | 16315 | catch_throw_command, |
a96d9b2e | 16316 | NULL, |
44feb3ce TT |
16317 | CATCH_PERMANENT, |
16318 | CATCH_TEMPORARY); | |
16319 | add_catch_command ("fork", _("Catch calls to fork."), | |
16320 | catch_fork_command_1, | |
a96d9b2e | 16321 | NULL, |
44feb3ce TT |
16322 | (void *) (uintptr_t) catch_fork_permanent, |
16323 | (void *) (uintptr_t) catch_fork_temporary); | |
16324 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
16325 | catch_fork_command_1, | |
a96d9b2e | 16326 | NULL, |
44feb3ce TT |
16327 | (void *) (uintptr_t) catch_vfork_permanent, |
16328 | (void *) (uintptr_t) catch_vfork_temporary); | |
16329 | add_catch_command ("exec", _("Catch calls to exec."), | |
16330 | catch_exec_command_1, | |
a96d9b2e SDJ |
16331 | NULL, |
16332 | CATCH_PERMANENT, | |
16333 | CATCH_TEMPORARY); | |
edcc5120 TT |
16334 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
16335 | Usage: catch load [REGEX]\n\ | |
16336 | If REGEX is given, only stop for libraries matching the regular expression."), | |
16337 | catch_load_command_1, | |
16338 | NULL, | |
16339 | CATCH_PERMANENT, | |
16340 | CATCH_TEMPORARY); | |
16341 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
16342 | Usage: catch unload [REGEX]\n\ | |
16343 | If REGEX is given, only stop for libraries matching the regular expression."), | |
16344 | catch_unload_command_1, | |
16345 | NULL, | |
16346 | CATCH_PERMANENT, | |
16347 | CATCH_TEMPORARY); | |
a96d9b2e SDJ |
16348 | add_catch_command ("syscall", _("\ |
16349 | Catch system calls by their names and/or numbers.\n\ | |
16350 | Arguments say which system calls to catch. If no arguments\n\ | |
16351 | are given, every system call will be caught.\n\ | |
16352 | Arguments, if given, should be one or more system call names\n\ | |
16353 | (if your system supports that), or system call numbers."), | |
16354 | catch_syscall_command_1, | |
16355 | catch_syscall_completer, | |
44feb3ce TT |
16356 | CATCH_PERMANENT, |
16357 | CATCH_TEMPORARY); | |
c5aa993b | 16358 | |
1bedd215 AC |
16359 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
16360 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 16361 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 16362 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16363 | an expression changes.\n\ |
16364 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16365 | the memory to which it refers.")); | |
65d12d83 | 16366 | set_cmd_completer (c, expression_completer); |
c906108c | 16367 | |
1bedd215 AC |
16368 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
16369 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 16370 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 16371 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16372 | an expression is read.\n\ |
16373 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16374 | the memory to which it refers.")); | |
65d12d83 | 16375 | set_cmd_completer (c, expression_completer); |
c906108c | 16376 | |
1bedd215 AC |
16377 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
16378 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 16379 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 16380 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16381 | an expression is either read or written.\n\ |
16382 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16383 | the memory to which it refers.")); | |
65d12d83 | 16384 | set_cmd_completer (c, expression_completer); |
c906108c | 16385 | |
d77f58be | 16386 | add_info ("watchpoints", watchpoints_info, _("\ |
e5a67952 | 16387 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 16388 | |
920d2a44 AC |
16389 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
16390 | respond to changes - contrary to the description. */ | |
85c07804 AC |
16391 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
16392 | &can_use_hw_watchpoints, _("\ | |
16393 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
16394 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
16395 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
16396 | such is available. (However, any hardware watchpoints that were\n\ | |
16397 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
16398 | hardware.)"), |
16399 | NULL, | |
920d2a44 | 16400 | show_can_use_hw_watchpoints, |
85c07804 | 16401 | &setlist, &showlist); |
c906108c SS |
16402 | |
16403 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 16404 | |
1042e4c0 SS |
16405 | /* Tracepoint manipulation commands. */ |
16406 | ||
16407 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
16408 | Set a tracepoint at specified line or function.\n\ | |
16409 | \n" | |
16410 | BREAK_ARGS_HELP ("trace") "\n\ | |
16411 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16412 | set_cmd_completer (c, location_completer); | |
16413 | ||
16414 | add_com_alias ("tp", "trace", class_alias, 0); | |
16415 | add_com_alias ("tr", "trace", class_alias, 1); | |
16416 | add_com_alias ("tra", "trace", class_alias, 1); | |
16417 | add_com_alias ("trac", "trace", class_alias, 1); | |
16418 | ||
7a697b8d SS |
16419 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
16420 | Set a fast tracepoint at specified line or function.\n\ | |
16421 | \n" | |
16422 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
16423 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16424 | set_cmd_completer (c, location_completer); | |
16425 | ||
0fb4aa4b PA |
16426 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
16427 | Set a static tracepoint at specified line, function or marker.\n\ | |
16428 | \n\ | |
16429 | strace [LOCATION] [if CONDITION]\n\ | |
16430 | LOCATION may be a line number, function name, \"*\" and an address,\n\ | |
16431 | or -m MARKER_ID.\n\ | |
16432 | If a line number is specified, probe the marker at start of code\n\ | |
16433 | for that line. If a function is specified, probe the marker at start\n\ | |
16434 | of code for that function. If an address is specified, probe the marker\n\ | |
16435 | at that exact address. If a marker id is specified, probe the marker\n\ | |
16436 | with that name. With no LOCATION, uses current execution address of\n\ | |
16437 | the selected stack frame.\n\ | |
16438 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ | |
16439 | This collects arbitrary user data passed in the probe point call to the\n\ | |
16440 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
16441 | by printing the $_sdata variable like any other convenience variable.\n\ | |
16442 | \n\ | |
16443 | CONDITION is a boolean expression.\n\ | |
16444 | \n\ | |
d41c0fc8 PA |
16445 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
16446 | conditions are different.\n\ | |
0fb4aa4b PA |
16447 | \n\ |
16448 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
16449 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16450 | set_cmd_completer (c, location_completer); | |
16451 | ||
1042e4c0 | 16452 | add_info ("tracepoints", tracepoints_info, _("\ |
e5a67952 | 16453 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
16454 | Convenience variable \"$tpnum\" contains the number of the\n\ |
16455 | last tracepoint set.")); | |
16456 | ||
16457 | add_info_alias ("tp", "tracepoints", 1); | |
16458 | ||
16459 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
16460 | Delete specified tracepoints.\n\ | |
16461 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16462 | No argument means delete all tracepoints."), | |
16463 | &deletelist); | |
7e20dfcd | 16464 | add_alias_cmd ("tr", "tracepoints", class_trace, 1, &deletelist); |
1042e4c0 SS |
16465 | |
16466 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
16467 | Disable specified tracepoints.\n\ | |
16468 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16469 | No argument means disable all tracepoints."), | |
16470 | &disablelist); | |
16471 | deprecate_cmd (c, "disable"); | |
16472 | ||
16473 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
16474 | Enable specified tracepoints.\n\ | |
16475 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16476 | No argument means enable all tracepoints."), | |
16477 | &enablelist); | |
16478 | deprecate_cmd (c, "enable"); | |
16479 | ||
16480 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
16481 | Set the passcount for a tracepoint.\n\ | |
16482 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
16483 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
16484 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
16485 | ||
6149aea9 PA |
16486 | add_prefix_cmd ("save", class_breakpoint, save_command, |
16487 | _("Save breakpoint definitions as a script."), | |
16488 | &save_cmdlist, "save ", | |
16489 | 0/*allow-unknown*/, &cmdlist); | |
16490 | ||
16491 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
16492 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 16493 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
16494 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
16495 | session to restore them."), | |
16496 | &save_cmdlist); | |
16497 | set_cmd_completer (c, filename_completer); | |
16498 | ||
16499 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 16500 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
16501 | Use the 'source' command in another debug session to restore them."), |
16502 | &save_cmdlist); | |
1042e4c0 SS |
16503 | set_cmd_completer (c, filename_completer); |
16504 | ||
6149aea9 PA |
16505 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
16506 | deprecate_cmd (c, "save tracepoints"); | |
16507 | ||
1bedd215 | 16508 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
16509 | Breakpoint specific settings\n\ |
16510 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 16511 | pending breakpoint behavior"), |
fa8d40ab JJ |
16512 | &breakpoint_set_cmdlist, "set breakpoint ", |
16513 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 16514 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
16515 | Breakpoint specific settings\n\ |
16516 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 16517 | pending breakpoint behavior"), |
fa8d40ab JJ |
16518 | &breakpoint_show_cmdlist, "show breakpoint ", |
16519 | 0/*allow-unknown*/, &showlist); | |
16520 | ||
7915a72c AC |
16521 | add_setshow_auto_boolean_cmd ("pending", no_class, |
16522 | &pending_break_support, _("\ | |
16523 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
16524 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
16525 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
16526 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
16527 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 16528 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 16529 | NULL, |
920d2a44 | 16530 | show_pending_break_support, |
6e1d7d6c AC |
16531 | &breakpoint_set_cmdlist, |
16532 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
16533 | |
16534 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
16535 | |
16536 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
16537 | &automatic_hardware_breakpoints, _("\ | |
16538 | Set automatic usage of hardware breakpoints."), _("\ | |
16539 | Show automatic usage of hardware breakpoints."), _("\ | |
16540 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
16541 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
16542 | a warning will be emitted for such breakpoints."), | |
16543 | NULL, | |
16544 | show_automatic_hardware_breakpoints, | |
16545 | &breakpoint_set_cmdlist, | |
16546 | &breakpoint_show_cmdlist); | |
74960c60 | 16547 | |
72d0e2c5 YQ |
16548 | add_setshow_auto_boolean_cmd ("always-inserted", class_support, |
16549 | &always_inserted_mode, _("\ | |
74960c60 VP |
16550 | Set mode for inserting breakpoints."), _("\ |
16551 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
16552 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
16553 | resumed, and removed when execution stops. When this mode is on,\n\ | |
16554 | breakpoints are inserted immediately and removed only when the user\n\ | |
16555 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
16556 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
16557 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
16558 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
16559 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
72d0e2c5 YQ |
16560 | NULL, |
16561 | &show_always_inserted_mode, | |
16562 | &breakpoint_set_cmdlist, | |
16563 | &breakpoint_show_cmdlist); | |
f1310107 | 16564 | |
b775012e LM |
16565 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
16566 | condition_evaluation_enums, | |
16567 | &condition_evaluation_mode_1, _("\ | |
16568 | Set mode of breakpoint condition evaluation."), _("\ | |
16569 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 16570 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
16571 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
16572 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
16573 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
16574 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
16575 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
16576 | be set to \"gdb\""), | |
16577 | &set_condition_evaluation_mode, | |
16578 | &show_condition_evaluation_mode, | |
16579 | &breakpoint_set_cmdlist, | |
16580 | &breakpoint_show_cmdlist); | |
16581 | ||
f1310107 TJB |
16582 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
16583 | Set a breakpoint for an address range.\n\ | |
16584 | break-range START-LOCATION, END-LOCATION\n\ | |
16585 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
16586 | LINENUM, for that line in the current file,\n\ | |
16587 | FILE:LINENUM, for that line in that file,\n\ | |
16588 | +OFFSET, for that number of lines after the current line\n\ | |
16589 | or the start of the range\n\ | |
16590 | FUNCTION, for the first line in that function,\n\ | |
16591 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
16592 | *ADDRESS, for the instruction at that address.\n\ | |
16593 | \n\ | |
16594 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
16595 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
16596 | range (including START-LOCATION and END-LOCATION).")); | |
16597 | ||
e7e0cddf SS |
16598 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
16599 | Set a dynamic printf at specified line or function.\n\ | |
16600 | dprintf location,format string,arg1,arg2,...\n\ | |
16601 | location may be a line number, function name, or \"*\" and an address.\n\ | |
16602 | If a line number is specified, break at start of code for that line.\n\ | |
16603 | If a function is specified, break at start of code for that function.\n\ | |
16604 | ")); | |
16605 | set_cmd_completer (c, location_completer); | |
16606 | ||
16607 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
16608 | dprintf_style_enums, &dprintf_style, _("\ | |
16609 | Set the style of usage for dynamic printf."), _("\ | |
16610 | Show the style of usage for dynamic printf."), _("\ | |
16611 | This setting chooses how GDB will do a dynamic printf.\n\ | |
16612 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
16613 | console, as with the \"printf\" command.\n\ | |
16614 | If the value is \"call\", the print is done by calling a function in your\n\ | |
16615 | program; by default printf(), but you can choose a different function or\n\ | |
16616 | output stream by setting dprintf-function and dprintf-channel."), | |
16617 | update_dprintf_commands, NULL, | |
16618 | &setlist, &showlist); | |
16619 | ||
16620 | dprintf_function = xstrdup ("printf"); | |
16621 | add_setshow_string_cmd ("dprintf-function", class_support, | |
16622 | &dprintf_function, _("\ | |
16623 | Set the function to use for dynamic printf"), _("\ | |
16624 | Show the function to use for dynamic printf"), NULL, | |
16625 | update_dprintf_commands, NULL, | |
16626 | &setlist, &showlist); | |
16627 | ||
16628 | dprintf_channel = xstrdup (""); | |
16629 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
16630 | &dprintf_channel, _("\ | |
16631 | Set the channel to use for dynamic printf"), _("\ | |
16632 | Show the channel to use for dynamic printf"), NULL, | |
16633 | update_dprintf_commands, NULL, | |
16634 | &setlist, &showlist); | |
16635 | ||
d3ce09f5 SS |
16636 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
16637 | &disconnected_dprintf, _("\ | |
16638 | Set whether dprintf continues after GDB disconnects."), _("\ | |
16639 | Show whether dprintf continues after GDB disconnects."), _("\ | |
16640 | Use this to let dprintf commands continue to hit and produce output\n\ | |
16641 | even if GDB disconnects or detaches from the target."), | |
16642 | NULL, | |
16643 | NULL, | |
16644 | &setlist, &showlist); | |
16645 | ||
16646 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
16647 | agent-printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
16648 | (target agent only) This is useful for formatted output in user-defined commands.")); | |
16649 | ||
765dc015 | 16650 | automatic_hardware_breakpoints = 1; |
f3b1572e PA |
16651 | |
16652 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
c906108c | 16653 | } |