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 | |
edcc5120 TT |
282 | static void init_catchpoint (struct breakpoint *b, |
283 | struct gdbarch *gdbarch, int tempflag, | |
284 | char *cond_string, | |
285 | const struct breakpoint_ops *ops); | |
286 | ||
2060206e PA |
287 | /* The abstract base class all breakpoint_ops structures inherit |
288 | from. */ | |
289 | static struct breakpoint_ops base_breakpoint_ops; | |
290 | ||
291 | /* The breakpoint_ops structure to be inherited by all breakpoint_ops | |
292 | that are implemented on top of software or hardware breakpoints | |
293 | (user breakpoints, internal and momentary breakpoints, etc.). */ | |
294 | static struct breakpoint_ops bkpt_base_breakpoint_ops; | |
295 | ||
296 | /* Internal breakpoints class type. */ | |
06edf0c0 | 297 | static struct breakpoint_ops internal_breakpoint_ops; |
2060206e PA |
298 | |
299 | /* Momentary breakpoints class type. */ | |
06edf0c0 PA |
300 | static struct breakpoint_ops momentary_breakpoint_ops; |
301 | ||
e2e4d78b JK |
302 | /* Momentary breakpoints for bp_longjmp and bp_exception class type. */ |
303 | static struct breakpoint_ops longjmp_breakpoint_ops; | |
304 | ||
2060206e PA |
305 | /* The breakpoint_ops structure to be used in regular user created |
306 | breakpoints. */ | |
307 | struct breakpoint_ops bkpt_breakpoint_ops; | |
308 | ||
55aa24fb SDJ |
309 | /* Breakpoints set on probes. */ |
310 | static struct breakpoint_ops bkpt_probe_breakpoint_ops; | |
311 | ||
e7e0cddf SS |
312 | /* Dynamic printf class type. */ |
313 | static struct breakpoint_ops dprintf_breakpoint_ops; | |
314 | ||
d3ce09f5 SS |
315 | /* The style in which to perform a dynamic printf. This is a user |
316 | option because different output options have different tradeoffs; | |
317 | if GDB does the printing, there is better error handling if there | |
318 | is a problem with any of the arguments, but using an inferior | |
319 | function lets you have special-purpose printers and sending of | |
320 | output to the same place as compiled-in print functions. */ | |
321 | ||
322 | static const char dprintf_style_gdb[] = "gdb"; | |
323 | static const char dprintf_style_call[] = "call"; | |
324 | static const char dprintf_style_agent[] = "agent"; | |
325 | static const char *const dprintf_style_enums[] = { | |
326 | dprintf_style_gdb, | |
327 | dprintf_style_call, | |
328 | dprintf_style_agent, | |
329 | NULL | |
330 | }; | |
331 | static const char *dprintf_style = dprintf_style_gdb; | |
332 | ||
333 | /* The function to use for dynamic printf if the preferred style is to | |
334 | call into the inferior. The value is simply a string that is | |
335 | copied into the command, so it can be anything that GDB can | |
336 | evaluate to a callable address, not necessarily a function name. */ | |
337 | ||
338 | static char *dprintf_function = ""; | |
339 | ||
340 | /* The channel to use for dynamic printf if the preferred style is to | |
341 | call into the inferior; if a nonempty string, it will be passed to | |
342 | the call as the first argument, with the format string as the | |
343 | second. As with the dprintf function, this can be anything that | |
344 | GDB knows how to evaluate, so in addition to common choices like | |
345 | "stderr", this could be an app-specific expression like | |
346 | "mystreams[curlogger]". */ | |
347 | ||
348 | static char *dprintf_channel = ""; | |
349 | ||
350 | /* True if dprintf commands should continue to operate even if GDB | |
351 | has disconnected. */ | |
352 | static int disconnected_dprintf = 1; | |
353 | ||
5cea2a26 PA |
354 | /* A reference-counted struct command_line. This lets multiple |
355 | breakpoints share a single command list. */ | |
356 | struct counted_command_line | |
357 | { | |
358 | /* The reference count. */ | |
359 | int refc; | |
360 | ||
361 | /* The command list. */ | |
362 | struct command_line *commands; | |
363 | }; | |
364 | ||
365 | struct command_line * | |
366 | breakpoint_commands (struct breakpoint *b) | |
367 | { | |
368 | return b->commands ? b->commands->commands : NULL; | |
369 | } | |
3daf8fe5 | 370 | |
f3b1572e PA |
371 | /* Flag indicating that a command has proceeded the inferior past the |
372 | current breakpoint. */ | |
373 | ||
374 | static int breakpoint_proceeded; | |
375 | ||
956a9fb9 | 376 | const char * |
2cec12e5 AR |
377 | bpdisp_text (enum bpdisp disp) |
378 | { | |
4a64f543 MS |
379 | /* NOTE: the following values are a part of MI protocol and |
380 | represent values of 'disp' field returned when inferior stops at | |
381 | a breakpoint. */ | |
bc043ef3 | 382 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 383 | |
2cec12e5 AR |
384 | return bpdisps[(int) disp]; |
385 | } | |
c906108c | 386 | |
4a64f543 | 387 | /* Prototypes for exported functions. */ |
c906108c | 388 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 389 | if such is available. */ |
c906108c SS |
390 | static int can_use_hw_watchpoints; |
391 | ||
920d2a44 AC |
392 | static void |
393 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
394 | struct cmd_list_element *c, | |
395 | const char *value) | |
396 | { | |
3e43a32a MS |
397 | fprintf_filtered (file, |
398 | _("Debugger's willingness to use " | |
399 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
400 | value); |
401 | } | |
402 | ||
fa8d40ab JJ |
403 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
404 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 405 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
406 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
407 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
408 | static void |
409 | show_pending_break_support (struct ui_file *file, int from_tty, | |
410 | struct cmd_list_element *c, | |
411 | const char *value) | |
412 | { | |
3e43a32a MS |
413 | fprintf_filtered (file, |
414 | _("Debugger's behavior regarding " | |
415 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
416 | value); |
417 | } | |
fa8d40ab | 418 | |
765dc015 | 419 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 420 | set with "break" but falling in read-only memory. |
765dc015 VP |
421 | If 0, gdb will warn about such breakpoints, but won't automatically |
422 | use hardware breakpoints. */ | |
423 | static int automatic_hardware_breakpoints; | |
424 | static void | |
425 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
426 | struct cmd_list_element *c, | |
427 | const char *value) | |
428 | { | |
3e43a32a MS |
429 | fprintf_filtered (file, |
430 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
431 | value); |
432 | } | |
433 | ||
33e5cbd6 PA |
434 | /* If on, gdb will keep breakpoints inserted even as inferior is |
435 | stopped, and immediately insert any new breakpoints. If off, gdb | |
436 | will insert breakpoints into inferior only when resuming it, and | |
437 | will remove breakpoints upon stop. If auto, GDB will behave as ON | |
438 | if in non-stop mode, and as OFF if all-stop mode.*/ | |
439 | ||
72d0e2c5 YQ |
440 | static enum auto_boolean always_inserted_mode = AUTO_BOOLEAN_AUTO; |
441 | ||
33e5cbd6 | 442 | static void |
74960c60 | 443 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 444 | struct cmd_list_element *c, const char *value) |
74960c60 | 445 | { |
72d0e2c5 | 446 | if (always_inserted_mode == AUTO_BOOLEAN_AUTO) |
3e43a32a MS |
447 | fprintf_filtered (file, |
448 | _("Always inserted breakpoint " | |
449 | "mode is %s (currently %s).\n"), | |
33e5cbd6 PA |
450 | value, |
451 | breakpoints_always_inserted_mode () ? "on" : "off"); | |
452 | else | |
3e43a32a MS |
453 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
454 | value); | |
74960c60 VP |
455 | } |
456 | ||
33e5cbd6 PA |
457 | int |
458 | breakpoints_always_inserted_mode (void) | |
459 | { | |
72d0e2c5 YQ |
460 | return (always_inserted_mode == AUTO_BOOLEAN_TRUE |
461 | || (always_inserted_mode == AUTO_BOOLEAN_AUTO && non_stop)); | |
33e5cbd6 | 462 | } |
765dc015 | 463 | |
b775012e LM |
464 | static const char condition_evaluation_both[] = "host or target"; |
465 | ||
466 | /* Modes for breakpoint condition evaluation. */ | |
467 | static const char condition_evaluation_auto[] = "auto"; | |
468 | static const char condition_evaluation_host[] = "host"; | |
469 | static const char condition_evaluation_target[] = "target"; | |
470 | static const char *const condition_evaluation_enums[] = { | |
471 | condition_evaluation_auto, | |
472 | condition_evaluation_host, | |
473 | condition_evaluation_target, | |
474 | NULL | |
475 | }; | |
476 | ||
477 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
478 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
479 | ||
480 | /* Global that we use to display information to the user (gets its value from | |
481 | condition_evaluation_mode_1. */ | |
482 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
483 | ||
484 | /* Translate a condition evaluation mode MODE into either "host" | |
485 | or "target". This is used mostly to translate from "auto" to the | |
486 | real setting that is being used. It returns the translated | |
487 | evaluation mode. */ | |
488 | ||
489 | static const char * | |
490 | translate_condition_evaluation_mode (const char *mode) | |
491 | { | |
492 | if (mode == condition_evaluation_auto) | |
493 | { | |
494 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
495 | return condition_evaluation_target; | |
496 | else | |
497 | return condition_evaluation_host; | |
498 | } | |
499 | else | |
500 | return mode; | |
501 | } | |
502 | ||
503 | /* Discovers what condition_evaluation_auto translates to. */ | |
504 | ||
505 | static const char * | |
506 | breakpoint_condition_evaluation_mode (void) | |
507 | { | |
508 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
509 | } | |
510 | ||
511 | /* Return true if GDB should evaluate breakpoint conditions or false | |
512 | otherwise. */ | |
513 | ||
514 | static int | |
515 | gdb_evaluates_breakpoint_condition_p (void) | |
516 | { | |
517 | const char *mode = breakpoint_condition_evaluation_mode (); | |
518 | ||
519 | return (mode == condition_evaluation_host); | |
520 | } | |
521 | ||
a14ed312 | 522 | void _initialize_breakpoint (void); |
c906108c | 523 | |
c906108c SS |
524 | /* Are we executing breakpoint commands? */ |
525 | static int executing_breakpoint_commands; | |
526 | ||
c02f5703 MS |
527 | /* Are overlay event breakpoints enabled? */ |
528 | static int overlay_events_enabled; | |
529 | ||
e09342b5 TJB |
530 | /* See description in breakpoint.h. */ |
531 | int target_exact_watchpoints = 0; | |
532 | ||
c906108c | 533 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 534 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 535 | current breakpoint. */ |
c906108c | 536 | |
5c44784c | 537 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 538 | |
5c44784c JM |
539 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
540 | for (B = breakpoint_chain; \ | |
541 | B ? (TMP=B->next, 1): 0; \ | |
542 | B = TMP) | |
c906108c | 543 | |
4a64f543 MS |
544 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
545 | not provided so update_global_location_list must not be called | |
546 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 547 | |
876fa593 JK |
548 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
549 | for (BP_TMP = bp_location; \ | |
550 | BP_TMP < bp_location + bp_location_count && (B = *BP_TMP); \ | |
551 | BP_TMP++) | |
7cc221ef | 552 | |
b775012e LM |
553 | /* Iterates through locations with address ADDRESS for the currently selected |
554 | program space. BP_LOCP_TMP points to each object. BP_LOCP_START points | |
555 | to where the loop should start from. | |
556 | If BP_LOCP_START is a NULL pointer, the macro automatically seeks the | |
557 | appropriate location to start with. */ | |
558 | ||
559 | #define ALL_BP_LOCATIONS_AT_ADDR(BP_LOCP_TMP, BP_LOCP_START, ADDRESS) \ | |
560 | for (BP_LOCP_START = BP_LOCP_START == NULL ? get_first_locp_gte_addr (ADDRESS) : BP_LOCP_START, \ | |
561 | BP_LOCP_TMP = BP_LOCP_START; \ | |
562 | BP_LOCP_START \ | |
563 | && (BP_LOCP_TMP < bp_location + bp_location_count \ | |
564 | && (*BP_LOCP_TMP)->address == ADDRESS); \ | |
565 | BP_LOCP_TMP++) | |
566 | ||
1042e4c0 SS |
567 | /* Iterator for tracepoints only. */ |
568 | ||
569 | #define ALL_TRACEPOINTS(B) \ | |
570 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 571 | if (is_tracepoint (B)) |
1042e4c0 | 572 | |
7cc221ef | 573 | /* Chains of all breakpoints defined. */ |
c906108c SS |
574 | |
575 | struct breakpoint *breakpoint_chain; | |
576 | ||
876fa593 JK |
577 | /* Array is sorted by bp_location_compare - primarily by the ADDRESS. */ |
578 | ||
579 | static struct bp_location **bp_location; | |
580 | ||
581 | /* Number of elements of BP_LOCATION. */ | |
582 | ||
583 | static unsigned bp_location_count; | |
584 | ||
4a64f543 MS |
585 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
586 | ADDRESS for the current elements of BP_LOCATION which get a valid | |
587 | result from bp_location_has_shadow. You can use it for roughly | |
588 | limiting the subrange of BP_LOCATION to scan for shadow bytes for | |
589 | an address you need to read. */ | |
876fa593 JK |
590 | |
591 | static CORE_ADDR bp_location_placed_address_before_address_max; | |
592 | ||
4a64f543 MS |
593 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
594 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
595 | BP_LOCATION which get a valid result from bp_location_has_shadow. | |
596 | You can use it for roughly limiting the subrange of BP_LOCATION to | |
597 | scan for shadow bytes for an address you need to read. */ | |
876fa593 JK |
598 | |
599 | static CORE_ADDR bp_location_shadow_len_after_address_max; | |
7cc221ef | 600 | |
4a64f543 MS |
601 | /* The locations that no longer correspond to any breakpoint, unlinked |
602 | from bp_location array, but for which a hit may still be reported | |
603 | by a target. */ | |
20874c92 VP |
604 | VEC(bp_location_p) *moribund_locations = NULL; |
605 | ||
c906108c SS |
606 | /* Number of last breakpoint made. */ |
607 | ||
95a42b64 TT |
608 | static int breakpoint_count; |
609 | ||
86b17b60 PA |
610 | /* The value of `breakpoint_count' before the last command that |
611 | created breakpoints. If the last (break-like) command created more | |
612 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
613 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
614 | static int prev_breakpoint_count; | |
c906108c | 615 | |
1042e4c0 SS |
616 | /* Number of last tracepoint made. */ |
617 | ||
95a42b64 | 618 | static int tracepoint_count; |
1042e4c0 | 619 | |
6149aea9 PA |
620 | static struct cmd_list_element *breakpoint_set_cmdlist; |
621 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 622 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 623 | |
468d015d JJ |
624 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
625 | static int | |
626 | breakpoint_enabled (struct breakpoint *b) | |
627 | { | |
0d381245 | 628 | return (b->enable_state == bp_enabled); |
468d015d JJ |
629 | } |
630 | ||
c906108c SS |
631 | /* Set breakpoint count to NUM. */ |
632 | ||
95a42b64 | 633 | static void |
fba45db2 | 634 | set_breakpoint_count (int num) |
c906108c | 635 | { |
86b17b60 | 636 | prev_breakpoint_count = breakpoint_count; |
c906108c | 637 | breakpoint_count = num; |
4fa62494 | 638 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
639 | } |
640 | ||
86b17b60 PA |
641 | /* Used by `start_rbreak_breakpoints' below, to record the current |
642 | breakpoint count before "rbreak" creates any breakpoint. */ | |
643 | static int rbreak_start_breakpoint_count; | |
644 | ||
95a42b64 TT |
645 | /* Called at the start an "rbreak" command to record the first |
646 | breakpoint made. */ | |
86b17b60 | 647 | |
95a42b64 TT |
648 | void |
649 | start_rbreak_breakpoints (void) | |
650 | { | |
86b17b60 | 651 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
652 | } |
653 | ||
654 | /* Called at the end of an "rbreak" command to record the last | |
655 | breakpoint made. */ | |
86b17b60 | 656 | |
95a42b64 TT |
657 | void |
658 | end_rbreak_breakpoints (void) | |
659 | { | |
86b17b60 | 660 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
661 | } |
662 | ||
4a64f543 | 663 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
664 | |
665 | void | |
fba45db2 | 666 | clear_breakpoint_hit_counts (void) |
c906108c SS |
667 | { |
668 | struct breakpoint *b; | |
669 | ||
670 | ALL_BREAKPOINTS (b) | |
671 | b->hit_count = 0; | |
672 | } | |
673 | ||
9add0f1b TT |
674 | /* Allocate a new counted_command_line with reference count of 1. |
675 | The new structure owns COMMANDS. */ | |
676 | ||
677 | static struct counted_command_line * | |
678 | alloc_counted_command_line (struct command_line *commands) | |
679 | { | |
680 | struct counted_command_line *result | |
681 | = xmalloc (sizeof (struct counted_command_line)); | |
cc59ec59 | 682 | |
9add0f1b TT |
683 | result->refc = 1; |
684 | result->commands = commands; | |
685 | return result; | |
686 | } | |
687 | ||
688 | /* Increment reference count. This does nothing if CMD is NULL. */ | |
689 | ||
690 | static void | |
691 | incref_counted_command_line (struct counted_command_line *cmd) | |
692 | { | |
693 | if (cmd) | |
694 | ++cmd->refc; | |
695 | } | |
696 | ||
697 | /* Decrement reference count. If the reference count reaches 0, | |
698 | destroy the counted_command_line. Sets *CMDP to NULL. This does | |
699 | nothing if *CMDP is NULL. */ | |
700 | ||
701 | static void | |
702 | decref_counted_command_line (struct counted_command_line **cmdp) | |
703 | { | |
704 | if (*cmdp) | |
705 | { | |
706 | if (--(*cmdp)->refc == 0) | |
707 | { | |
708 | free_command_lines (&(*cmdp)->commands); | |
709 | xfree (*cmdp); | |
710 | } | |
711 | *cmdp = NULL; | |
712 | } | |
713 | } | |
714 | ||
715 | /* A cleanup function that calls decref_counted_command_line. */ | |
716 | ||
717 | static void | |
718 | do_cleanup_counted_command_line (void *arg) | |
719 | { | |
720 | decref_counted_command_line (arg); | |
721 | } | |
722 | ||
723 | /* Create a cleanup that calls decref_counted_command_line on the | |
724 | argument. */ | |
725 | ||
726 | static struct cleanup * | |
727 | make_cleanup_decref_counted_command_line (struct counted_command_line **cmdp) | |
728 | { | |
729 | return make_cleanup (do_cleanup_counted_command_line, cmdp); | |
730 | } | |
731 | ||
c906108c | 732 | \f |
48cb2d85 VP |
733 | /* Return the breakpoint with the specified number, or NULL |
734 | if the number does not refer to an existing breakpoint. */ | |
735 | ||
736 | struct breakpoint * | |
737 | get_breakpoint (int num) | |
738 | { | |
739 | struct breakpoint *b; | |
740 | ||
741 | ALL_BREAKPOINTS (b) | |
742 | if (b->number == num) | |
743 | return b; | |
744 | ||
745 | return NULL; | |
746 | } | |
5c44784c | 747 | |
c906108c | 748 | \f |
adc36818 | 749 | |
b775012e LM |
750 | /* Mark locations as "conditions have changed" in case the target supports |
751 | evaluating conditions on its side. */ | |
752 | ||
753 | static void | |
754 | mark_breakpoint_modified (struct breakpoint *b) | |
755 | { | |
756 | struct bp_location *loc; | |
757 | ||
758 | /* This is only meaningful if the target is | |
759 | evaluating conditions and if the user has | |
760 | opted for condition evaluation on the target's | |
761 | side. */ | |
762 | if (gdb_evaluates_breakpoint_condition_p () | |
763 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
764 | return; | |
765 | ||
766 | if (!is_breakpoint (b)) | |
767 | return; | |
768 | ||
769 | for (loc = b->loc; loc; loc = loc->next) | |
770 | loc->condition_changed = condition_modified; | |
771 | } | |
772 | ||
773 | /* Mark location as "conditions have changed" in case the target supports | |
774 | evaluating conditions on its side. */ | |
775 | ||
776 | static void | |
777 | mark_breakpoint_location_modified (struct bp_location *loc) | |
778 | { | |
779 | /* This is only meaningful if the target is | |
780 | evaluating conditions and if the user has | |
781 | opted for condition evaluation on the target's | |
782 | side. */ | |
783 | if (gdb_evaluates_breakpoint_condition_p () | |
784 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
785 | ||
786 | return; | |
787 | ||
788 | if (!is_breakpoint (loc->owner)) | |
789 | return; | |
790 | ||
791 | loc->condition_changed = condition_modified; | |
792 | } | |
793 | ||
794 | /* Sets the condition-evaluation mode using the static global | |
795 | condition_evaluation_mode. */ | |
796 | ||
797 | static void | |
798 | set_condition_evaluation_mode (char *args, int from_tty, | |
799 | struct cmd_list_element *c) | |
800 | { | |
b775012e LM |
801 | const char *old_mode, *new_mode; |
802 | ||
803 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
804 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
805 | { | |
806 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
807 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
808 | "Using host evaluation mode instead.")); | |
809 | return; | |
810 | } | |
811 | ||
812 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
813 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
814 | ||
abf1152a JK |
815 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
816 | settings was "auto". */ | |
817 | condition_evaluation_mode = condition_evaluation_mode_1; | |
818 | ||
b775012e LM |
819 | /* Only update the mode if the user picked a different one. */ |
820 | if (new_mode != old_mode) | |
821 | { | |
822 | struct bp_location *loc, **loc_tmp; | |
823 | /* If the user switched to a different evaluation mode, we | |
824 | need to synch the changes with the target as follows: | |
825 | ||
826 | "host" -> "target": Send all (valid) conditions to the target. | |
827 | "target" -> "host": Remove all the conditions from the target. | |
828 | */ | |
829 | ||
b775012e LM |
830 | if (new_mode == condition_evaluation_target) |
831 | { | |
832 | /* Mark everything modified and synch conditions with the | |
833 | target. */ | |
834 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
835 | mark_breakpoint_location_modified (loc); | |
836 | } | |
837 | else | |
838 | { | |
839 | /* Manually mark non-duplicate locations to synch conditions | |
840 | with the target. We do this to remove all the conditions the | |
841 | target knows about. */ | |
842 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
843 | if (is_breakpoint (loc->owner) && loc->inserted) | |
844 | loc->needs_update = 1; | |
845 | } | |
846 | ||
847 | /* Do the update. */ | |
848 | update_global_location_list (1); | |
849 | } | |
850 | ||
851 | return; | |
852 | } | |
853 | ||
854 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
855 | what "auto" is translating to. */ | |
856 | ||
857 | static void | |
858 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
859 | struct cmd_list_element *c, const char *value) | |
860 | { | |
861 | if (condition_evaluation_mode == condition_evaluation_auto) | |
862 | fprintf_filtered (file, | |
863 | _("Breakpoint condition evaluation " | |
864 | "mode is %s (currently %s).\n"), | |
865 | value, | |
866 | breakpoint_condition_evaluation_mode ()); | |
867 | else | |
868 | fprintf_filtered (file, _("Breakpoint condition evaluation mode is %s.\n"), | |
869 | value); | |
870 | } | |
871 | ||
872 | /* A comparison function for bp_location AP and BP that is used by | |
873 | bsearch. This comparison function only cares about addresses, unlike | |
874 | the more general bp_location_compare function. */ | |
875 | ||
876 | static int | |
877 | bp_location_compare_addrs (const void *ap, const void *bp) | |
878 | { | |
879 | struct bp_location *a = *(void **) ap; | |
880 | struct bp_location *b = *(void **) bp; | |
881 | ||
882 | if (a->address == b->address) | |
883 | return 0; | |
884 | else | |
885 | return ((a->address > b->address) - (a->address < b->address)); | |
886 | } | |
887 | ||
888 | /* Helper function to skip all bp_locations with addresses | |
889 | less than ADDRESS. It returns the first bp_location that | |
890 | is greater than or equal to ADDRESS. If none is found, just | |
891 | return NULL. */ | |
892 | ||
893 | static struct bp_location ** | |
894 | get_first_locp_gte_addr (CORE_ADDR address) | |
895 | { | |
896 | struct bp_location dummy_loc; | |
897 | struct bp_location *dummy_locp = &dummy_loc; | |
898 | struct bp_location **locp_found = NULL; | |
899 | ||
900 | /* Initialize the dummy location's address field. */ | |
901 | memset (&dummy_loc, 0, sizeof (struct bp_location)); | |
902 | dummy_loc.address = address; | |
903 | ||
904 | /* Find a close match to the first location at ADDRESS. */ | |
905 | locp_found = bsearch (&dummy_locp, bp_location, bp_location_count, | |
906 | sizeof (struct bp_location **), | |
907 | bp_location_compare_addrs); | |
908 | ||
909 | /* Nothing was found, nothing left to do. */ | |
910 | if (locp_found == NULL) | |
911 | return NULL; | |
912 | ||
913 | /* We may have found a location that is at ADDRESS but is not the first in the | |
914 | location's list. Go backwards (if possible) and locate the first one. */ | |
915 | while ((locp_found - 1) >= bp_location | |
916 | && (*(locp_found - 1))->address == address) | |
917 | locp_found--; | |
918 | ||
919 | return locp_found; | |
920 | } | |
921 | ||
adc36818 PM |
922 | void |
923 | set_breakpoint_condition (struct breakpoint *b, char *exp, | |
924 | int from_tty) | |
925 | { | |
3a5c3e22 PA |
926 | xfree (b->cond_string); |
927 | b->cond_string = NULL; | |
adc36818 | 928 | |
3a5c3e22 | 929 | if (is_watchpoint (b)) |
adc36818 | 930 | { |
3a5c3e22 PA |
931 | struct watchpoint *w = (struct watchpoint *) b; |
932 | ||
933 | xfree (w->cond_exp); | |
934 | w->cond_exp = NULL; | |
935 | } | |
936 | else | |
937 | { | |
938 | struct bp_location *loc; | |
939 | ||
940 | for (loc = b->loc; loc; loc = loc->next) | |
941 | { | |
942 | xfree (loc->cond); | |
943 | loc->cond = NULL; | |
b775012e LM |
944 | |
945 | /* No need to free the condition agent expression | |
946 | bytecode (if we have one). We will handle this | |
947 | when we go through update_global_location_list. */ | |
3a5c3e22 | 948 | } |
adc36818 | 949 | } |
adc36818 PM |
950 | |
951 | if (*exp == 0) | |
952 | { | |
953 | if (from_tty) | |
954 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
955 | } | |
956 | else | |
957 | { | |
958 | char *arg = exp; | |
cc59ec59 | 959 | |
adc36818 PM |
960 | /* I don't know if it matters whether this is the string the user |
961 | typed in or the decompiled expression. */ | |
962 | b->cond_string = xstrdup (arg); | |
963 | b->condition_not_parsed = 0; | |
964 | ||
965 | if (is_watchpoint (b)) | |
966 | { | |
3a5c3e22 PA |
967 | struct watchpoint *w = (struct watchpoint *) b; |
968 | ||
adc36818 PM |
969 | innermost_block = NULL; |
970 | arg = exp; | |
1bb9788d | 971 | w->cond_exp = parse_exp_1 (&arg, 0, 0, 0); |
adc36818 PM |
972 | if (*arg) |
973 | error (_("Junk at end of expression")); | |
3a5c3e22 | 974 | w->cond_exp_valid_block = innermost_block; |
adc36818 PM |
975 | } |
976 | else | |
977 | { | |
3a5c3e22 PA |
978 | struct bp_location *loc; |
979 | ||
adc36818 PM |
980 | for (loc = b->loc; loc; loc = loc->next) |
981 | { | |
982 | arg = exp; | |
983 | loc->cond = | |
1bb9788d TT |
984 | parse_exp_1 (&arg, loc->address, |
985 | block_for_pc (loc->address), 0); | |
adc36818 PM |
986 | if (*arg) |
987 | error (_("Junk at end of expression")); | |
988 | } | |
989 | } | |
990 | } | |
b775012e LM |
991 | mark_breakpoint_modified (b); |
992 | ||
ef37bb07 | 993 | annotate_breakpoints_changed (); |
8d3788bd | 994 | observer_notify_breakpoint_modified (b); |
adc36818 PM |
995 | } |
996 | ||
d55637df TT |
997 | /* Completion for the "condition" command. */ |
998 | ||
999 | static VEC (char_ptr) * | |
1000 | condition_completer (struct cmd_list_element *cmd, char *text, char *word) | |
1001 | { | |
1002 | char *space; | |
1003 | ||
1004 | text = skip_spaces (text); | |
1005 | space = skip_to_space (text); | |
1006 | if (*space == '\0') | |
1007 | { | |
1008 | int len; | |
1009 | struct breakpoint *b; | |
1010 | VEC (char_ptr) *result = NULL; | |
1011 | ||
1012 | if (text[0] == '$') | |
1013 | { | |
1014 | /* We don't support completion of history indices. */ | |
1015 | if (isdigit (text[1])) | |
1016 | return NULL; | |
1017 | return complete_internalvar (&text[1]); | |
1018 | } | |
1019 | ||
1020 | /* We're completing the breakpoint number. */ | |
1021 | len = strlen (text); | |
1022 | ||
1023 | ALL_BREAKPOINTS (b) | |
1024 | { | |
1025 | int single = b->loc->next == NULL; | |
1026 | struct bp_location *loc; | |
1027 | int count = 1; | |
1028 | ||
1029 | for (loc = b->loc; loc; loc = loc->next) | |
1030 | { | |
1031 | char location[50]; | |
1032 | ||
1033 | if (single) | |
8c042590 | 1034 | xsnprintf (location, sizeof (location), "%d", b->number); |
d55637df | 1035 | else |
8c042590 PM |
1036 | xsnprintf (location, sizeof (location), "%d.%d", b->number, |
1037 | count); | |
d55637df TT |
1038 | |
1039 | if (strncmp (location, text, len) == 0) | |
1040 | VEC_safe_push (char_ptr, result, xstrdup (location)); | |
1041 | ||
1042 | ++count; | |
1043 | } | |
1044 | } | |
1045 | ||
1046 | return result; | |
1047 | } | |
1048 | ||
1049 | /* We're completing the expression part. */ | |
1050 | text = skip_spaces (space); | |
1051 | return expression_completer (cmd, text, word); | |
1052 | } | |
1053 | ||
c906108c SS |
1054 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
1055 | ||
1056 | static void | |
fba45db2 | 1057 | condition_command (char *arg, int from_tty) |
c906108c | 1058 | { |
52f0bd74 | 1059 | struct breakpoint *b; |
c906108c | 1060 | char *p; |
52f0bd74 | 1061 | int bnum; |
c906108c SS |
1062 | |
1063 | if (arg == 0) | |
e2e0b3e5 | 1064 | error_no_arg (_("breakpoint number")); |
c906108c SS |
1065 | |
1066 | p = arg; | |
1067 | bnum = get_number (&p); | |
5c44784c | 1068 | if (bnum == 0) |
8a3fe4f8 | 1069 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
1070 | |
1071 | ALL_BREAKPOINTS (b) | |
1072 | if (b->number == bnum) | |
2f069f6f | 1073 | { |
7371cf6d PM |
1074 | /* Check if this breakpoint has a Python object assigned to |
1075 | it, and if it has a definition of the "stop" | |
1076 | method. This method and conditions entered into GDB from | |
1077 | the CLI are mutually exclusive. */ | |
1078 | if (b->py_bp_object | |
1079 | && gdbpy_breakpoint_has_py_cond (b->py_bp_object)) | |
1080 | error (_("Cannot set a condition where a Python 'stop' " | |
1081 | "method has been defined in the breakpoint.")); | |
2566ad2d | 1082 | set_breakpoint_condition (b, p, from_tty); |
b775012e LM |
1083 | |
1084 | if (is_breakpoint (b)) | |
1085 | update_global_location_list (1); | |
1086 | ||
2f069f6f JB |
1087 | return; |
1088 | } | |
c906108c | 1089 | |
8a3fe4f8 | 1090 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
1091 | } |
1092 | ||
a7bdde9e VP |
1093 | /* Check that COMMAND do not contain commands that are suitable |
1094 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1095 | Throw if any such commands is found. */ |
1096 | ||
a7bdde9e VP |
1097 | static void |
1098 | check_no_tracepoint_commands (struct command_line *commands) | |
1099 | { | |
1100 | struct command_line *c; | |
cc59ec59 | 1101 | |
a7bdde9e VP |
1102 | for (c = commands; c; c = c->next) |
1103 | { | |
1104 | int i; | |
1105 | ||
1106 | if (c->control_type == while_stepping_control) | |
3e43a32a MS |
1107 | error (_("The 'while-stepping' command can " |
1108 | "only be used for tracepoints")); | |
a7bdde9e VP |
1109 | |
1110 | for (i = 0; i < c->body_count; ++i) | |
1111 | check_no_tracepoint_commands ((c->body_list)[i]); | |
1112 | ||
1113 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1114 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1115 | command directly. */ |
1116 | if (strstr (c->line, "collect ") == c->line) | |
1117 | error (_("The 'collect' command can only be used for tracepoints")); | |
1118 | ||
51661e93 VP |
1119 | if (strstr (c->line, "teval ") == c->line) |
1120 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1121 | } |
1122 | } | |
1123 | ||
d77f58be SS |
1124 | /* Encapsulate tests for different types of tracepoints. */ |
1125 | ||
d9b3f62e PA |
1126 | static int |
1127 | is_tracepoint_type (enum bptype type) | |
1128 | { | |
1129 | return (type == bp_tracepoint | |
1130 | || type == bp_fast_tracepoint | |
1131 | || type == bp_static_tracepoint); | |
1132 | } | |
1133 | ||
a7bdde9e | 1134 | int |
d77f58be | 1135 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1136 | { |
d9b3f62e | 1137 | return is_tracepoint_type (b->type); |
a7bdde9e | 1138 | } |
d9b3f62e | 1139 | |
e5dd4106 | 1140 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1141 | breakpoint. This function will throw an exception if a problem is |
1142 | found. */ | |
48cb2d85 | 1143 | |
95a42b64 TT |
1144 | static void |
1145 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1146 | struct command_line *commands) | |
48cb2d85 | 1147 | { |
d77f58be | 1148 | if (is_tracepoint (b)) |
a7bdde9e | 1149 | { |
4a64f543 MS |
1150 | /* We need to verify that each top-level element of commands is |
1151 | valid for tracepoints, that there's at most one | |
1152 | while-stepping element, and that while-stepping's body has | |
1153 | valid tracing commands excluding nested while-stepping. */ | |
a7bdde9e VP |
1154 | struct command_line *c; |
1155 | struct command_line *while_stepping = 0; | |
1156 | for (c = commands; c; c = c->next) | |
1157 | { | |
a7bdde9e VP |
1158 | if (c->control_type == while_stepping_control) |
1159 | { | |
1160 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1161 | error (_("The 'while-stepping' command " |
1162 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1163 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1164 | error (_("The 'while-stepping' command " |
1165 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1166 | |
1167 | if (while_stepping) | |
3e43a32a MS |
1168 | error (_("The 'while-stepping' command " |
1169 | "can be used only once")); | |
a7bdde9e VP |
1170 | else |
1171 | while_stepping = c; | |
1172 | } | |
1173 | } | |
1174 | if (while_stepping) | |
1175 | { | |
1176 | struct command_line *c2; | |
1177 | ||
1178 | gdb_assert (while_stepping->body_count == 1); | |
1179 | c2 = while_stepping->body_list[0]; | |
1180 | for (; c2; c2 = c2->next) | |
1181 | { | |
a7bdde9e VP |
1182 | if (c2->control_type == while_stepping_control) |
1183 | error (_("The 'while-stepping' command cannot be nested")); | |
1184 | } | |
1185 | } | |
1186 | } | |
1187 | else | |
1188 | { | |
1189 | check_no_tracepoint_commands (commands); | |
1190 | } | |
95a42b64 TT |
1191 | } |
1192 | ||
0fb4aa4b PA |
1193 | /* Return a vector of all the static tracepoints set at ADDR. The |
1194 | caller is responsible for releasing the vector. */ | |
1195 | ||
1196 | VEC(breakpoint_p) * | |
1197 | static_tracepoints_here (CORE_ADDR addr) | |
1198 | { | |
1199 | struct breakpoint *b; | |
1200 | VEC(breakpoint_p) *found = 0; | |
1201 | struct bp_location *loc; | |
1202 | ||
1203 | ALL_BREAKPOINTS (b) | |
1204 | if (b->type == bp_static_tracepoint) | |
1205 | { | |
1206 | for (loc = b->loc; loc; loc = loc->next) | |
1207 | if (loc->address == addr) | |
1208 | VEC_safe_push(breakpoint_p, found, b); | |
1209 | } | |
1210 | ||
1211 | return found; | |
1212 | } | |
1213 | ||
95a42b64 | 1214 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1215 | validate that only allowed commands are included. */ |
95a42b64 TT |
1216 | |
1217 | void | |
4a64f543 MS |
1218 | breakpoint_set_commands (struct breakpoint *b, |
1219 | struct command_line *commands) | |
95a42b64 TT |
1220 | { |
1221 | validate_commands_for_breakpoint (b, commands); | |
a7bdde9e | 1222 | |
9add0f1b TT |
1223 | decref_counted_command_line (&b->commands); |
1224 | b->commands = alloc_counted_command_line (commands); | |
ef37bb07 | 1225 | annotate_breakpoints_changed (); |
8d3788bd | 1226 | observer_notify_breakpoint_modified (b); |
48cb2d85 VP |
1227 | } |
1228 | ||
45a43567 TT |
1229 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1230 | is not the same as the "silent" that may appear in the breakpoint's | |
1231 | commands. */ | |
1232 | ||
1233 | void | |
1234 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1235 | { | |
1236 | int old_silent = b->silent; | |
1237 | ||
1238 | b->silent = silent; | |
1239 | if (old_silent != silent) | |
8d3788bd | 1240 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1241 | } |
1242 | ||
1243 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1244 | breakpoint work for any thread. */ | |
1245 | ||
1246 | void | |
1247 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1248 | { | |
1249 | int old_thread = b->thread; | |
1250 | ||
1251 | b->thread = thread; | |
1252 | if (old_thread != thread) | |
8d3788bd | 1253 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1254 | } |
1255 | ||
1256 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1257 | breakpoint work for any task. */ | |
1258 | ||
1259 | void | |
1260 | breakpoint_set_task (struct breakpoint *b, int task) | |
1261 | { | |
1262 | int old_task = b->task; | |
1263 | ||
1264 | b->task = task; | |
1265 | if (old_task != task) | |
8d3788bd | 1266 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1267 | } |
1268 | ||
95a42b64 TT |
1269 | void |
1270 | check_tracepoint_command (char *line, void *closure) | |
a7bdde9e VP |
1271 | { |
1272 | struct breakpoint *b = closure; | |
cc59ec59 | 1273 | |
a7bdde9e VP |
1274 | validate_actionline (&line, b); |
1275 | } | |
1276 | ||
95a42b64 TT |
1277 | /* A structure used to pass information through |
1278 | map_breakpoint_numbers. */ | |
1279 | ||
1280 | struct commands_info | |
1281 | { | |
1282 | /* True if the command was typed at a tty. */ | |
1283 | int from_tty; | |
86b17b60 PA |
1284 | |
1285 | /* The breakpoint range spec. */ | |
1286 | char *arg; | |
1287 | ||
95a42b64 TT |
1288 | /* Non-NULL if the body of the commands are being read from this |
1289 | already-parsed command. */ | |
1290 | struct command_line *control; | |
86b17b60 | 1291 | |
95a42b64 TT |
1292 | /* The command lines read from the user, or NULL if they have not |
1293 | yet been read. */ | |
1294 | struct counted_command_line *cmd; | |
1295 | }; | |
1296 | ||
1297 | /* A callback for map_breakpoint_numbers that sets the commands for | |
1298 | commands_command. */ | |
1299 | ||
c906108c | 1300 | static void |
95a42b64 | 1301 | do_map_commands_command (struct breakpoint *b, void *data) |
c906108c | 1302 | { |
95a42b64 | 1303 | struct commands_info *info = data; |
c906108c | 1304 | |
95a42b64 TT |
1305 | if (info->cmd == NULL) |
1306 | { | |
1307 | struct command_line *l; | |
5c44784c | 1308 | |
95a42b64 TT |
1309 | if (info->control != NULL) |
1310 | l = copy_command_lines (info->control->body_list[0]); | |
1311 | else | |
86b17b60 PA |
1312 | { |
1313 | struct cleanup *old_chain; | |
1314 | char *str; | |
c5aa993b | 1315 | |
3e43a32a MS |
1316 | str = xstrprintf (_("Type commands for breakpoint(s) " |
1317 | "%s, one per line."), | |
86b17b60 PA |
1318 | info->arg); |
1319 | ||
1320 | old_chain = make_cleanup (xfree, str); | |
1321 | ||
1322 | l = read_command_lines (str, | |
1323 | info->from_tty, 1, | |
d77f58be | 1324 | (is_tracepoint (b) |
86b17b60 PA |
1325 | ? check_tracepoint_command : 0), |
1326 | b); | |
1327 | ||
1328 | do_cleanups (old_chain); | |
1329 | } | |
a7bdde9e | 1330 | |
95a42b64 TT |
1331 | info->cmd = alloc_counted_command_line (l); |
1332 | } | |
1333 | ||
1334 | /* If a breakpoint was on the list more than once, we don't need to | |
1335 | do anything. */ | |
1336 | if (b->commands != info->cmd) | |
1337 | { | |
1338 | validate_commands_for_breakpoint (b, info->cmd->commands); | |
1339 | incref_counted_command_line (info->cmd); | |
1340 | decref_counted_command_line (&b->commands); | |
1341 | b->commands = info->cmd; | |
ef37bb07 | 1342 | annotate_breakpoints_changed (); |
8d3788bd | 1343 | observer_notify_breakpoint_modified (b); |
c5aa993b | 1344 | } |
95a42b64 TT |
1345 | } |
1346 | ||
1347 | static void | |
4a64f543 MS |
1348 | commands_command_1 (char *arg, int from_tty, |
1349 | struct command_line *control) | |
95a42b64 TT |
1350 | { |
1351 | struct cleanup *cleanups; | |
1352 | struct commands_info info; | |
1353 | ||
1354 | info.from_tty = from_tty; | |
1355 | info.control = control; | |
1356 | info.cmd = NULL; | |
1357 | /* If we read command lines from the user, then `info' will hold an | |
1358 | extra reference to the commands that we must clean up. */ | |
1359 | cleanups = make_cleanup_decref_counted_command_line (&info.cmd); | |
1360 | ||
1361 | if (arg == NULL || !*arg) | |
1362 | { | |
86b17b60 | 1363 | if (breakpoint_count - prev_breakpoint_count > 1) |
4a64f543 MS |
1364 | arg = xstrprintf ("%d-%d", prev_breakpoint_count + 1, |
1365 | breakpoint_count); | |
95a42b64 TT |
1366 | else if (breakpoint_count > 0) |
1367 | arg = xstrprintf ("%d", breakpoint_count); | |
86b17b60 PA |
1368 | else |
1369 | { | |
1370 | /* So that we don't try to free the incoming non-NULL | |
1371 | argument in the cleanup below. Mapping breakpoint | |
1372 | numbers will fail in this case. */ | |
1373 | arg = NULL; | |
1374 | } | |
95a42b64 | 1375 | } |
9766ced4 SS |
1376 | else |
1377 | /* The command loop has some static state, so we need to preserve | |
1378 | our argument. */ | |
1379 | arg = xstrdup (arg); | |
86b17b60 PA |
1380 | |
1381 | if (arg != NULL) | |
1382 | make_cleanup (xfree, arg); | |
1383 | ||
1384 | info.arg = arg; | |
95a42b64 TT |
1385 | |
1386 | map_breakpoint_numbers (arg, do_map_commands_command, &info); | |
1387 | ||
1388 | if (info.cmd == NULL) | |
1389 | error (_("No breakpoints specified.")); | |
1390 | ||
1391 | do_cleanups (cleanups); | |
1392 | } | |
1393 | ||
1394 | static void | |
1395 | commands_command (char *arg, int from_tty) | |
1396 | { | |
1397 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1398 | } |
40c03ae8 EZ |
1399 | |
1400 | /* Like commands_command, but instead of reading the commands from | |
1401 | input stream, takes them from an already parsed command structure. | |
1402 | ||
1403 | This is used by cli-script.c to DTRT with breakpoint commands | |
1404 | that are part of if and while bodies. */ | |
1405 | enum command_control_type | |
1406 | commands_from_control_command (char *arg, struct command_line *cmd) | |
1407 | { | |
95a42b64 TT |
1408 | commands_command_1 (arg, 0, cmd); |
1409 | return simple_control; | |
40c03ae8 | 1410 | } |
876fa593 JK |
1411 | |
1412 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1413 | ||
1414 | static int | |
1415 | bp_location_has_shadow (struct bp_location *bl) | |
1416 | { | |
1417 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1418 | return 0; | |
1419 | if (!bl->inserted) | |
1420 | return 0; | |
1421 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1422 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1423 | return 0; |
1424 | return 1; | |
1425 | } | |
1426 | ||
8defab1a | 1427 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1428 | by replacing any memory breakpoints with their shadowed contents. |
1429 | ||
35c63cd8 JB |
1430 | If READBUF is not NULL, this buffer must not overlap with any of |
1431 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1432 | a failed assertion internal error will be raised. | |
1433 | ||
876fa593 | 1434 | The range of shadowed area by each bp_location is: |
35df4500 TJB |
1435 | bl->address - bp_location_placed_address_before_address_max |
1436 | up to bl->address + bp_location_shadow_len_after_address_max | |
876fa593 JK |
1437 | The range we were requested to resolve shadows for is: |
1438 | memaddr ... memaddr + len | |
1439 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 TJB |
1440 | memaddr + len <= (bl->address |
1441 | - bp_location_placed_address_before_address_max) | |
876fa593 | 1442 | and: |
35df4500 | 1443 | bl->address + bp_location_shadow_len_after_address_max <= memaddr */ |
c906108c | 1444 | |
8defab1a | 1445 | void |
f0ba3972 PA |
1446 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1447 | const gdb_byte *writebuf_org, | |
1448 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1449 | { |
4a64f543 MS |
1450 | /* Left boundary, right boundary and median element of our binary |
1451 | search. */ | |
876fa593 JK |
1452 | unsigned bc_l, bc_r, bc; |
1453 | ||
4a64f543 MS |
1454 | /* Find BC_L which is a leftmost element which may affect BUF |
1455 | content. It is safe to report lower value but a failure to | |
1456 | report higher one. */ | |
876fa593 JK |
1457 | |
1458 | bc_l = 0; | |
1459 | bc_r = bp_location_count; | |
1460 | while (bc_l + 1 < bc_r) | |
1461 | { | |
35df4500 | 1462 | struct bp_location *bl; |
876fa593 JK |
1463 | |
1464 | bc = (bc_l + bc_r) / 2; | |
35df4500 | 1465 | bl = bp_location[bc]; |
876fa593 | 1466 | |
4a64f543 MS |
1467 | /* Check first BL->ADDRESS will not overflow due to the added |
1468 | constant. Then advance the left boundary only if we are sure | |
1469 | the BC element can in no way affect the BUF content (MEMADDR | |
1470 | to MEMADDR + LEN range). | |
876fa593 | 1471 | |
4a64f543 MS |
1472 | Use the BP_LOCATION_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
1473 | offset so that we cannot miss a breakpoint with its shadow | |
1474 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1475 | |
35df4500 TJB |
1476 | if ((bl->address + bp_location_shadow_len_after_address_max |
1477 | >= bl->address) | |
1478 | && (bl->address + bp_location_shadow_len_after_address_max | |
1479 | <= memaddr)) | |
876fa593 JK |
1480 | bc_l = bc; |
1481 | else | |
1482 | bc_r = bc; | |
1483 | } | |
1484 | ||
128070bb PA |
1485 | /* Due to the binary search above, we need to make sure we pick the |
1486 | first location that's at BC_L's address. E.g., if there are | |
1487 | multiple locations at the same address, BC_L may end up pointing | |
1488 | at a duplicate location, and miss the "master"/"inserted" | |
1489 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1490 | B: | |
1491 | ||
1492 | L1@A, L2@A, L3@B, ... | |
1493 | ||
1494 | BC_L could end up pointing at location L2, while the "master" | |
1495 | location could be L1. Since the `loc->inserted' flag is only set | |
1496 | on "master" locations, we'd forget to restore the shadow of L1 | |
1497 | and L2. */ | |
1498 | while (bc_l > 0 | |
1499 | && bp_location[bc_l]->address == bp_location[bc_l - 1]->address) | |
1500 | bc_l--; | |
1501 | ||
876fa593 JK |
1502 | /* Now do full processing of the found relevant range of elements. */ |
1503 | ||
1504 | for (bc = bc_l; bc < bp_location_count; bc++) | |
c5aa993b | 1505 | { |
35df4500 | 1506 | struct bp_location *bl = bp_location[bc]; |
876fa593 JK |
1507 | CORE_ADDR bp_addr = 0; |
1508 | int bp_size = 0; | |
1509 | int bptoffset = 0; | |
1510 | ||
35df4500 TJB |
1511 | /* bp_location array has BL->OWNER always non-NULL. */ |
1512 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1513 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1514 | bl->owner->number); |
ffce0d52 | 1515 | |
e5dd4106 | 1516 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1517 | content. */ |
1518 | ||
35df4500 TJB |
1519 | if (bl->address >= bp_location_placed_address_before_address_max |
1520 | && memaddr + len <= (bl->address | |
1521 | - bp_location_placed_address_before_address_max)) | |
876fa593 JK |
1522 | break; |
1523 | ||
35df4500 | 1524 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1525 | continue; |
35df4500 | 1526 | if (!breakpoint_address_match (bl->target_info.placed_address_space, 0, |
6c95b8df PA |
1527 | current_program_space->aspace, 0)) |
1528 | continue; | |
1529 | ||
c5aa993b JM |
1530 | /* Addresses and length of the part of the breakpoint that |
1531 | we need to copy. */ | |
35df4500 TJB |
1532 | bp_addr = bl->target_info.placed_address; |
1533 | bp_size = bl->target_info.shadow_len; | |
8defab1a | 1534 | |
c5aa993b JM |
1535 | if (bp_addr + bp_size <= memaddr) |
1536 | /* The breakpoint is entirely before the chunk of memory we | |
1537 | are reading. */ | |
1538 | continue; | |
8defab1a | 1539 | |
c5aa993b JM |
1540 | if (bp_addr >= memaddr + len) |
1541 | /* The breakpoint is entirely after the chunk of memory we are | |
4a64f543 | 1542 | reading. */ |
c5aa993b | 1543 | continue; |
c5aa993b | 1544 | |
8defab1a DJ |
1545 | /* Offset within shadow_contents. */ |
1546 | if (bp_addr < memaddr) | |
1547 | { | |
1548 | /* Only copy the second part of the breakpoint. */ | |
1549 | bp_size -= memaddr - bp_addr; | |
1550 | bptoffset = memaddr - bp_addr; | |
1551 | bp_addr = memaddr; | |
1552 | } | |
c5aa993b | 1553 | |
8defab1a DJ |
1554 | if (bp_addr + bp_size > memaddr + len) |
1555 | { | |
1556 | /* Only copy the first part of the breakpoint. */ | |
1557 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1558 | } | |
c5aa993b | 1559 | |
f0ba3972 PA |
1560 | if (readbuf != NULL) |
1561 | { | |
35c63cd8 JB |
1562 | /* Verify that the readbuf buffer does not overlap with |
1563 | the shadow_contents buffer. */ | |
1564 | gdb_assert (bl->target_info.shadow_contents >= readbuf + len | |
1565 | || readbuf >= (bl->target_info.shadow_contents | |
1566 | + bl->target_info.shadow_len)); | |
1567 | ||
f0ba3972 PA |
1568 | /* Update the read buffer with this inserted breakpoint's |
1569 | shadow. */ | |
1570 | memcpy (readbuf + bp_addr - memaddr, | |
1571 | bl->target_info.shadow_contents + bptoffset, bp_size); | |
1572 | } | |
1573 | else | |
1574 | { | |
1575 | struct gdbarch *gdbarch = bl->gdbarch; | |
1576 | const unsigned char *bp; | |
1577 | CORE_ADDR placed_address = bl->target_info.placed_address; | |
1578 | unsigned placed_size = bl->target_info.placed_size; | |
1579 | ||
1580 | /* Update the shadow with what we want to write to memory. */ | |
1581 | memcpy (bl->target_info.shadow_contents + bptoffset, | |
1582 | writebuf_org + bp_addr - memaddr, bp_size); | |
1583 | ||
1584 | /* Determine appropriate breakpoint contents and size for this | |
1585 | address. */ | |
1586 | bp = gdbarch_breakpoint_from_pc (gdbarch, &placed_address, &placed_size); | |
1587 | ||
1588 | /* Update the final write buffer with this inserted | |
1589 | breakpoint's INSN. */ | |
1590 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1591 | } | |
c5aa993b | 1592 | } |
c906108c | 1593 | } |
c906108c | 1594 | \f |
c5aa993b | 1595 | |
b775012e LM |
1596 | /* Return true if BPT is either a software breakpoint or a hardware |
1597 | breakpoint. */ | |
1598 | ||
1599 | int | |
1600 | is_breakpoint (const struct breakpoint *bpt) | |
1601 | { | |
1602 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1603 | || bpt->type == bp_hardware_breakpoint |
1604 | || bpt->type == bp_dprintf); | |
b775012e LM |
1605 | } |
1606 | ||
60e1c644 PA |
1607 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1608 | ||
a5606eee | 1609 | static int |
d77f58be | 1610 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1611 | { |
1612 | return (bpt->type == bp_hardware_watchpoint | |
1613 | || bpt->type == bp_read_watchpoint | |
1614 | || bpt->type == bp_access_watchpoint); | |
1615 | } | |
7270d8f2 | 1616 | |
60e1c644 PA |
1617 | /* Return true if BPT is of any watchpoint kind, hardware or |
1618 | software. */ | |
1619 | ||
3a5c3e22 | 1620 | int |
d77f58be | 1621 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1622 | { |
1623 | return (is_hardware_watchpoint (bpt) | |
1624 | || bpt->type == bp_watchpoint); | |
1625 | } | |
1626 | ||
3a5c3e22 PA |
1627 | /* Returns true if the current thread and its running state are safe |
1628 | to evaluate or update watchpoint B. Watchpoints on local | |
1629 | expressions need to be evaluated in the context of the thread that | |
1630 | was current when the watchpoint was created, and, that thread needs | |
1631 | to be stopped to be able to select the correct frame context. | |
1632 | Watchpoints on global expressions can be evaluated on any thread, | |
1633 | and in any state. It is presently left to the target allowing | |
1634 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1635 | |
1636 | static int | |
3a5c3e22 | 1637 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1638 | { |
d0d8b0c6 JK |
1639 | return (b->base.pspace == current_program_space |
1640 | && (ptid_equal (b->watchpoint_thread, null_ptid) | |
1641 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1642 | && !is_executing (inferior_ptid)))); | |
f6bc2008 PA |
1643 | } |
1644 | ||
d0fb5eae JK |
1645 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1646 | associated bp_watchpoint_scope breakpoint. */ | |
1647 | ||
1648 | static void | |
3a5c3e22 | 1649 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1650 | { |
3a5c3e22 | 1651 | struct breakpoint *b = &w->base; |
d0fb5eae JK |
1652 | |
1653 | if (b->related_breakpoint != b) | |
1654 | { | |
1655 | gdb_assert (b->related_breakpoint->type == bp_watchpoint_scope); | |
1656 | gdb_assert (b->related_breakpoint->related_breakpoint == b); | |
1657 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1658 | b->related_breakpoint->related_breakpoint = b->related_breakpoint; | |
1659 | b->related_breakpoint = b; | |
1660 | } | |
1661 | b->disposition = disp_del_at_next_stop; | |
1662 | } | |
1663 | ||
567e1b4e JB |
1664 | /* Assuming that B is a watchpoint: |
1665 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1666 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1667 | - Evaluate the condition if there is one, and store the result |
1668 | in b->loc->cond. | |
a5606eee VP |
1669 | - Update the list of values that must be watched in B->loc. |
1670 | ||
4a64f543 MS |
1671 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1672 | nothing. If this is local watchpoint that is out of scope, delete | |
1673 | it. | |
1674 | ||
1675 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1676 | removed + inserted on each stop here. Normal breakpoints must | |
1677 | never be removed because they might be missed by a running thread | |
1678 | when debugging in non-stop mode. On the other hand, hardware | |
1679 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1680 | to each LWP since they are stored in each LWP's hardware debug | |
1681 | registers. Therefore, such LWP must be stopped first in order to | |
1682 | be able to modify its hardware watchpoints. | |
1683 | ||
1684 | Hardware watchpoints must be reset exactly once after being | |
1685 | presented to the user. It cannot be done sooner, because it would | |
1686 | reset the data used to present the watchpoint hit to the user. And | |
1687 | it must not be done later because it could display the same single | |
1688 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1689 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1690 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1691 | not user-visible - its hit is suppressed if the memory content has | |
1692 | not changed. | |
1693 | ||
1694 | The following constraints influence the location where we can reset | |
1695 | hardware watchpoints: | |
1696 | ||
1697 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1698 | called several times when GDB stops. | |
1699 | ||
1700 | [linux] | |
1701 | * Multiple hardware watchpoints can be hit at the same time, | |
1702 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1703 | hit at a time as the reason for stopping, and all the other hits | |
1704 | are presented later, one after the other, each time the user | |
1705 | requests the execution to be resumed. Execution is not resumed | |
1706 | for the threads still having pending hit event stored in | |
1707 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1708 | the inferior on the first stop the thread hit event is kept being | |
1709 | reported from its cached value by linux_nat_stopped_data_address | |
1710 | until the real thread resume happens after the watchpoint gets | |
1711 | presented and thus its LWP_INFO->STATUS gets reset. | |
1712 | ||
1713 | Therefore the hardware watchpoint hit can get safely reset on the | |
1714 | watchpoint removal from inferior. */ | |
a79d3c27 | 1715 | |
b40ce68a | 1716 | static void |
3a5c3e22 | 1717 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1718 | { |
a5606eee | 1719 | int within_current_scope; |
a5606eee | 1720 | struct frame_id saved_frame_id; |
66076460 | 1721 | int frame_saved; |
a5606eee | 1722 | |
f6bc2008 PA |
1723 | /* If this is a local watchpoint, we only want to check if the |
1724 | watchpoint frame is in scope if the current thread is the thread | |
1725 | that was used to create the watchpoint. */ | |
1726 | if (!watchpoint_in_thread_scope (b)) | |
1727 | return; | |
1728 | ||
3a5c3e22 | 1729 | if (b->base.disposition == disp_del_at_next_stop) |
a5606eee VP |
1730 | return; |
1731 | ||
66076460 | 1732 | frame_saved = 0; |
a5606eee VP |
1733 | |
1734 | /* Determine if the watchpoint is within scope. */ | |
1735 | if (b->exp_valid_block == NULL) | |
1736 | within_current_scope = 1; | |
1737 | else | |
1738 | { | |
b5db5dfc UW |
1739 | struct frame_info *fi = get_current_frame (); |
1740 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1741 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1742 | ||
1743 | /* If we're in a function epilogue, unwinding may not work | |
1744 | properly, so do not attempt to recreate locations at this | |
1745 | point. See similar comments in watchpoint_check. */ | |
1746 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) | |
1747 | return; | |
66076460 DJ |
1748 | |
1749 | /* Save the current frame's ID so we can restore it after | |
1750 | evaluating the watchpoint expression on its own frame. */ | |
1751 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1752 | took a frame parameter, so that we didn't have to change the | |
1753 | selected frame. */ | |
1754 | frame_saved = 1; | |
1755 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1756 | ||
a5606eee VP |
1757 | fi = frame_find_by_id (b->watchpoint_frame); |
1758 | within_current_scope = (fi != NULL); | |
1759 | if (within_current_scope) | |
1760 | select_frame (fi); | |
1761 | } | |
1762 | ||
b5db5dfc UW |
1763 | /* We don't free locations. They are stored in the bp_location array |
1764 | and update_global_location_list will eventually delete them and | |
1765 | remove breakpoints if needed. */ | |
3a5c3e22 | 1766 | b->base.loc = NULL; |
b5db5dfc | 1767 | |
a5606eee VP |
1768 | if (within_current_scope && reparse) |
1769 | { | |
1770 | char *s; | |
d63d0675 | 1771 | |
a5606eee VP |
1772 | if (b->exp) |
1773 | { | |
1774 | xfree (b->exp); | |
1775 | b->exp = NULL; | |
1776 | } | |
d63d0675 | 1777 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
1bb9788d | 1778 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1779 | /* If the meaning of expression itself changed, the old value is |
1780 | no longer relevant. We don't want to report a watchpoint hit | |
1781 | to the user when the old value and the new value may actually | |
1782 | be completely different objects. */ | |
1783 | value_free (b->val); | |
fa4727a6 DJ |
1784 | b->val = NULL; |
1785 | b->val_valid = 0; | |
60e1c644 PA |
1786 | |
1787 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1788 | expression is stored in the breakpoint object, not in the | |
1789 | locations (re)created below. */ | |
3a5c3e22 | 1790 | if (b->base.cond_string != NULL) |
60e1c644 PA |
1791 | { |
1792 | if (b->cond_exp != NULL) | |
1793 | { | |
1794 | xfree (b->cond_exp); | |
1795 | b->cond_exp = NULL; | |
1796 | } | |
1797 | ||
3a5c3e22 | 1798 | s = b->base.cond_string; |
1bb9788d | 1799 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 1800 | } |
a5606eee | 1801 | } |
a5606eee VP |
1802 | |
1803 | /* If we failed to parse the expression, for example because | |
1804 | it refers to a global variable in a not-yet-loaded shared library, | |
1805 | don't try to insert watchpoint. We don't automatically delete | |
1806 | such watchpoint, though, since failure to parse expression | |
1807 | is different from out-of-scope watchpoint. */ | |
2d134ed3 PA |
1808 | if ( !target_has_execution) |
1809 | { | |
1810 | /* Without execution, memory can't change. No use to try and | |
1811 | set watchpoint locations. The watchpoint will be reset when | |
1812 | the target gains execution, through breakpoint_re_set. */ | |
1813 | } | |
1814 | else if (within_current_scope && b->exp) | |
a5606eee | 1815 | { |
0cf6dd15 | 1816 | int pc = 0; |
fa4727a6 | 1817 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1818 | struct program_space *frame_pspace; |
a5606eee | 1819 | |
0cf6dd15 | 1820 | fetch_subexp_value (b->exp, &pc, &v, &result, &val_chain); |
a5606eee | 1821 | |
a5606eee VP |
1822 | /* Avoid setting b->val if it's already set. The meaning of |
1823 | b->val is 'the last value' user saw, and we should update | |
1824 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1825 | happens, the code that reports it updates b->val directly. |
1826 | We don't keep track of the memory value for masked | |
1827 | watchpoints. */ | |
3a5c3e22 | 1828 | if (!b->val_valid && !is_masked_watchpoint (&b->base)) |
fa4727a6 DJ |
1829 | { |
1830 | b->val = v; | |
1831 | b->val_valid = 1; | |
1832 | } | |
a5606eee | 1833 | |
2d134ed3 PA |
1834 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1835 | ||
a5606eee | 1836 | /* Look at each value on the value chain. */ |
9fa40276 | 1837 | for (v = val_chain; v; v = value_next (v)) |
a5606eee VP |
1838 | { |
1839 | /* If it's a memory location, and GDB actually needed | |
1840 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1841 | must watch it. If the first value returned is |
1842 | still lazy, that means an error occurred reading it; | |
1843 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1844 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1845 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1846 | { |
1847 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1848 | |
a5606eee VP |
1849 | /* We only watch structs and arrays if user asked |
1850 | for it explicitly, never if they just happen to | |
1851 | appear in the middle of some value chain. */ | |
fa4727a6 | 1852 | if (v == result |
a5606eee VP |
1853 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1854 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1855 | { | |
1856 | CORE_ADDR addr; | |
744a8059 | 1857 | int type; |
a5606eee VP |
1858 | struct bp_location *loc, **tmp; |
1859 | ||
42ae5230 | 1860 | addr = value_address (v); |
a5606eee | 1861 | type = hw_write; |
3a5c3e22 | 1862 | if (b->base.type == bp_read_watchpoint) |
a5606eee | 1863 | type = hw_read; |
3a5c3e22 | 1864 | else if (b->base.type == bp_access_watchpoint) |
a5606eee | 1865 | type = hw_access; |
3a5c3e22 PA |
1866 | |
1867 | loc = allocate_bp_location (&b->base); | |
1868 | for (tmp = &(b->base.loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
1869 | ; |
1870 | *tmp = loc; | |
a6d9a66e | 1871 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1872 | |
1873 | loc->pspace = frame_pspace; | |
a5606eee | 1874 | loc->address = addr; |
744a8059 | 1875 | loc->length = TYPE_LENGTH (value_type (v)); |
a5606eee VP |
1876 | loc->watchpoint_type = type; |
1877 | } | |
1878 | } | |
9fa40276 TJB |
1879 | } |
1880 | ||
1881 | /* Change the type of breakpoint between hardware assisted or | |
1882 | an ordinary watchpoint depending on the hardware support | |
1883 | and free hardware slots. REPARSE is set when the inferior | |
1884 | is started. */ | |
a9634178 | 1885 | if (reparse) |
9fa40276 | 1886 | { |
e09342b5 | 1887 | int reg_cnt; |
9fa40276 TJB |
1888 | enum bp_loc_type loc_type; |
1889 | struct bp_location *bl; | |
a5606eee | 1890 | |
a9634178 | 1891 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
1892 | |
1893 | if (reg_cnt) | |
9fa40276 TJB |
1894 | { |
1895 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 1896 | enum bptype type; |
9fa40276 | 1897 | |
a9634178 TJB |
1898 | /* Use an exact watchpoint when there's only one memory region to be |
1899 | watched, and only one debug register is needed to watch it. */ | |
1900 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
1901 | ||
9fa40276 | 1902 | /* We need to determine how many resources are already |
e09342b5 TJB |
1903 | used for all other hardware watchpoints plus this one |
1904 | to see if we still have enough resources to also fit | |
a1398e0c PA |
1905 | this watchpoint in as well. */ |
1906 | ||
1907 | /* If this is a software watchpoint, we try to turn it | |
1908 | to a hardware one -- count resources as if B was of | |
1909 | hardware watchpoint type. */ | |
1910 | type = b->base.type; | |
1911 | if (type == bp_watchpoint) | |
1912 | type = bp_hardware_watchpoint; | |
1913 | ||
1914 | /* This watchpoint may or may not have been placed on | |
1915 | the list yet at this point (it won't be in the list | |
1916 | if we're trying to create it for the first time, | |
1917 | through watch_command), so always account for it | |
1918 | manually. */ | |
1919 | ||
1920 | /* Count resources used by all watchpoints except B. */ | |
1921 | i = hw_watchpoint_used_count_others (&b->base, type, &other_type_used); | |
1922 | ||
1923 | /* Add in the resources needed for B. */ | |
1924 | i += hw_watchpoint_use_count (&b->base); | |
1925 | ||
1926 | target_resources_ok | |
1927 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 1928 | if (target_resources_ok <= 0) |
a9634178 | 1929 | { |
3a5c3e22 | 1930 | int sw_mode = b->base.ops->works_in_software_mode (&b->base); |
9c06b0b4 TJB |
1931 | |
1932 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
1933 | error (_("Target does not support this type of " |
1934 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
1935 | else if (target_resources_ok < 0 && !sw_mode) |
1936 | error (_("There are not enough available hardware " | |
1937 | "resources for this watchpoint.")); | |
a1398e0c PA |
1938 | |
1939 | /* Downgrade to software watchpoint. */ | |
1940 | b->base.type = bp_watchpoint; | |
1941 | } | |
1942 | else | |
1943 | { | |
1944 | /* If this was a software watchpoint, we've just | |
1945 | found we have enough resources to turn it to a | |
1946 | hardware watchpoint. Otherwise, this is a | |
1947 | nop. */ | |
1948 | b->base.type = type; | |
a9634178 | 1949 | } |
9fa40276 | 1950 | } |
3a5c3e22 | 1951 | else if (!b->base.ops->works_in_software_mode (&b->base)) |
a9634178 TJB |
1952 | error (_("Expression cannot be implemented with " |
1953 | "read/access watchpoint.")); | |
9fa40276 | 1954 | else |
3a5c3e22 | 1955 | b->base.type = bp_watchpoint; |
9fa40276 | 1956 | |
3a5c3e22 | 1957 | loc_type = (b->base.type == bp_watchpoint? bp_loc_other |
9fa40276 | 1958 | : bp_loc_hardware_watchpoint); |
3a5c3e22 | 1959 | for (bl = b->base.loc; bl; bl = bl->next) |
9fa40276 TJB |
1960 | bl->loc_type = loc_type; |
1961 | } | |
1962 | ||
1963 | for (v = val_chain; v; v = next) | |
1964 | { | |
a5606eee VP |
1965 | next = value_next (v); |
1966 | if (v != b->val) | |
1967 | value_free (v); | |
1968 | } | |
1969 | ||
c7437ca6 PA |
1970 | /* If a software watchpoint is not watching any memory, then the |
1971 | above left it without any location set up. But, | |
1972 | bpstat_stop_status requires a location to be able to report | |
1973 | stops, so make sure there's at least a dummy one. */ | |
3a5c3e22 | 1974 | if (b->base.type == bp_watchpoint && b->base.loc == NULL) |
c7437ca6 | 1975 | { |
3a5c3e22 PA |
1976 | struct breakpoint *base = &b->base; |
1977 | base->loc = allocate_bp_location (base); | |
1978 | base->loc->pspace = frame_pspace; | |
1979 | base->loc->address = -1; | |
1980 | base->loc->length = -1; | |
1981 | base->loc->watchpoint_type = -1; | |
c7437ca6 | 1982 | } |
a5606eee VP |
1983 | } |
1984 | else if (!within_current_scope) | |
7270d8f2 | 1985 | { |
ac74f770 MS |
1986 | printf_filtered (_("\ |
1987 | Watchpoint %d deleted because the program has left the block\n\ | |
1988 | in which its expression is valid.\n"), | |
3a5c3e22 | 1989 | b->base.number); |
d0fb5eae | 1990 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 1991 | } |
a5606eee VP |
1992 | |
1993 | /* Restore the selected frame. */ | |
66076460 DJ |
1994 | if (frame_saved) |
1995 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1996 | } |
1997 | ||
a5606eee | 1998 | |
74960c60 | 1999 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
2000 | inserted in the inferior. We don't differentiate the type of BL's owner |
2001 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
2002 | breakpoint_ops is not defined, because in insert_bp_location, | |
2003 | tracepoint's insert_location will not be called. */ | |
74960c60 | 2004 | static int |
35df4500 | 2005 | should_be_inserted (struct bp_location *bl) |
74960c60 | 2006 | { |
35df4500 | 2007 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
2008 | return 0; |
2009 | ||
35df4500 | 2010 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
2011 | return 0; |
2012 | ||
35df4500 | 2013 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
2014 | return 0; |
2015 | ||
f8eba3c6 TT |
2016 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
2017 | return 0; | |
2018 | ||
56710373 PA |
2019 | /* This is set for example, when we're attached to the parent of a |
2020 | vfork, and have detached from the child. The child is running | |
2021 | free, and we expect it to do an exec or exit, at which point the | |
2022 | OS makes the parent schedulable again (and the target reports | |
2023 | that the vfork is done). Until the child is done with the shared | |
2024 | memory region, do not insert breakpoints in the parent, otherwise | |
2025 | the child could still trip on the parent's breakpoints. Since | |
2026 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2027 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2028 | return 0; |
2029 | ||
74960c60 VP |
2030 | return 1; |
2031 | } | |
2032 | ||
934709f0 PW |
2033 | /* Same as should_be_inserted but does the check assuming |
2034 | that the location is not duplicated. */ | |
2035 | ||
2036 | static int | |
2037 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2038 | { | |
2039 | int result; | |
2040 | const int save_duplicate = bl->duplicate; | |
2041 | ||
2042 | bl->duplicate = 0; | |
2043 | result = should_be_inserted (bl); | |
2044 | bl->duplicate = save_duplicate; | |
2045 | return result; | |
2046 | } | |
2047 | ||
b775012e LM |
2048 | /* Parses a conditional described by an expression COND into an |
2049 | agent expression bytecode suitable for evaluation | |
2050 | by the bytecode interpreter. Return NULL if there was | |
2051 | any error during parsing. */ | |
2052 | ||
2053 | static struct agent_expr * | |
2054 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) | |
2055 | { | |
2056 | struct agent_expr *aexpr = NULL; | |
2057 | struct cleanup *old_chain = NULL; | |
2058 | volatile struct gdb_exception ex; | |
2059 | ||
2060 | if (!cond) | |
2061 | return NULL; | |
2062 | ||
2063 | /* We don't want to stop processing, so catch any errors | |
2064 | that may show up. */ | |
2065 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
2066 | { | |
2067 | aexpr = gen_eval_for_expr (scope, cond); | |
2068 | } | |
2069 | ||
2070 | if (ex.reason < 0) | |
2071 | { | |
2072 | /* If we got here, it means the condition could not be parsed to a valid | |
2073 | bytecode expression and thus can't be evaluated on the target's side. | |
2074 | It's no use iterating through the conditions. */ | |
2075 | return NULL; | |
2076 | } | |
2077 | ||
2078 | /* We have a valid agent expression. */ | |
2079 | return aexpr; | |
2080 | } | |
2081 | ||
2082 | /* Based on location BL, create a list of breakpoint conditions to be | |
2083 | passed on to the target. If we have duplicated locations with different | |
2084 | conditions, we will add such conditions to the list. The idea is that the | |
2085 | target will evaluate the list of conditions and will only notify GDB when | |
2086 | one of them is true. */ | |
2087 | ||
2088 | static void | |
2089 | build_target_condition_list (struct bp_location *bl) | |
2090 | { | |
2091 | struct bp_location **locp = NULL, **loc2p; | |
2092 | int null_condition_or_parse_error = 0; | |
2093 | int modified = bl->needs_update; | |
2094 | struct bp_location *loc; | |
2095 | ||
2096 | /* This is only meaningful if the target is | |
2097 | evaluating conditions and if the user has | |
2098 | opted for condition evaluation on the target's | |
2099 | side. */ | |
2100 | if (gdb_evaluates_breakpoint_condition_p () | |
2101 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2102 | return; | |
2103 | ||
2104 | /* Do a first pass to check for locations with no assigned | |
2105 | conditions or conditions that fail to parse to a valid agent expression | |
2106 | bytecode. If any of these happen, then it's no use to send conditions | |
2107 | to the target since this location will always trigger and generate a | |
2108 | response back to GDB. */ | |
2109 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2110 | { | |
2111 | loc = (*loc2p); | |
2112 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2113 | { | |
2114 | if (modified) | |
2115 | { | |
2116 | struct agent_expr *aexpr; | |
2117 | ||
2118 | /* Re-parse the conditions since something changed. In that | |
2119 | case we already freed the condition bytecodes (see | |
2120 | force_breakpoint_reinsertion). We just | |
2121 | need to parse the condition to bytecodes again. */ | |
2122 | aexpr = parse_cond_to_aexpr (bl->address, loc->cond); | |
2123 | loc->cond_bytecode = aexpr; | |
2124 | ||
2125 | /* Check if we managed to parse the conditional expression | |
2126 | correctly. If not, we will not send this condition | |
2127 | to the target. */ | |
2128 | if (aexpr) | |
2129 | continue; | |
2130 | } | |
2131 | ||
2132 | /* If we have a NULL bytecode expression, it means something | |
2133 | went wrong or we have a null condition expression. */ | |
2134 | if (!loc->cond_bytecode) | |
2135 | { | |
2136 | null_condition_or_parse_error = 1; | |
2137 | break; | |
2138 | } | |
2139 | } | |
2140 | } | |
2141 | ||
2142 | /* If any of these happened, it means we will have to evaluate the conditions | |
2143 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2144 | for all the other duplicate locations, thus we free all of them here. | |
2145 | ||
2146 | This is so we have a finer control over which locations' conditions are | |
2147 | being evaluated by GDB or the remote stub. */ | |
2148 | if (null_condition_or_parse_error) | |
2149 | { | |
2150 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2151 | { | |
2152 | loc = (*loc2p); | |
2153 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2154 | { | |
2155 | /* Only go as far as the first NULL bytecode is | |
2156 | located. */ | |
2157 | if (!loc->cond_bytecode) | |
2158 | return; | |
2159 | ||
2160 | free_agent_expr (loc->cond_bytecode); | |
2161 | loc->cond_bytecode = NULL; | |
2162 | } | |
2163 | } | |
2164 | } | |
2165 | ||
2166 | /* No NULL conditions or failed bytecode generation. Build a condition list | |
2167 | for this location's address. */ | |
2168 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2169 | { | |
2170 | loc = (*loc2p); | |
2171 | if (loc->cond | |
2172 | && is_breakpoint (loc->owner) | |
2173 | && loc->pspace->num == bl->pspace->num | |
2174 | && loc->owner->enable_state == bp_enabled | |
2175 | && loc->enabled) | |
2176 | /* Add the condition to the vector. This will be used later to send the | |
2177 | conditions to the target. */ | |
2178 | VEC_safe_push (agent_expr_p, bl->target_info.conditions, | |
2179 | loc->cond_bytecode); | |
2180 | } | |
2181 | ||
2182 | return; | |
2183 | } | |
2184 | ||
d3ce09f5 SS |
2185 | /* Parses a command described by string CMD into an agent expression |
2186 | bytecode suitable for evaluation by the bytecode interpreter. | |
2187 | Return NULL if there was any error during parsing. */ | |
2188 | ||
2189 | static struct agent_expr * | |
2190 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) | |
2191 | { | |
2192 | struct cleanup *old_cleanups = 0; | |
2193 | struct expression *expr, **argvec; | |
2194 | struct agent_expr *aexpr = NULL; | |
2195 | struct cleanup *old_chain = NULL; | |
2196 | volatile struct gdb_exception ex; | |
2197 | char *cmdrest; | |
2198 | char *format_start, *format_end; | |
2199 | struct format_piece *fpieces; | |
2200 | int nargs; | |
2201 | struct gdbarch *gdbarch = get_current_arch (); | |
2202 | ||
2203 | if (!cmd) | |
2204 | return NULL; | |
2205 | ||
2206 | cmdrest = cmd; | |
2207 | ||
2208 | if (*cmdrest == ',') | |
2209 | ++cmdrest; | |
2210 | cmdrest = skip_spaces (cmdrest); | |
2211 | ||
2212 | if (*cmdrest++ != '"') | |
2213 | error (_("No format string following the location")); | |
2214 | ||
2215 | format_start = cmdrest; | |
2216 | ||
2217 | fpieces = parse_format_string (&cmdrest); | |
2218 | ||
2219 | old_cleanups = make_cleanup (free_format_pieces_cleanup, &fpieces); | |
2220 | ||
2221 | format_end = cmdrest; | |
2222 | ||
2223 | if (*cmdrest++ != '"') | |
2224 | error (_("Bad format string, non-terminated '\"'.")); | |
2225 | ||
2226 | cmdrest = skip_spaces (cmdrest); | |
2227 | ||
2228 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2229 | error (_("Invalid argument syntax")); | |
2230 | ||
2231 | if (*cmdrest == ',') | |
2232 | cmdrest++; | |
2233 | cmdrest = skip_spaces (cmdrest); | |
2234 | ||
2235 | /* For each argument, make an expression. */ | |
2236 | ||
2237 | argvec = (struct expression **) alloca (strlen (cmd) | |
2238 | * sizeof (struct expression *)); | |
2239 | ||
2240 | nargs = 0; | |
2241 | while (*cmdrest != '\0') | |
2242 | { | |
2243 | char *cmd1; | |
2244 | ||
2245 | cmd1 = cmdrest; | |
2246 | expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); | |
2247 | argvec[nargs++] = expr; | |
2248 | cmdrest = cmd1; | |
2249 | if (*cmdrest == ',') | |
2250 | ++cmdrest; | |
2251 | } | |
2252 | ||
2253 | /* We don't want to stop processing, so catch any errors | |
2254 | that may show up. */ | |
2255 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
2256 | { | |
2257 | aexpr = gen_printf (scope, gdbarch, 0, 0, | |
2258 | format_start, format_end - format_start, | |
2259 | fpieces, nargs, argvec); | |
2260 | } | |
2261 | ||
2262 | if (ex.reason < 0) | |
2263 | { | |
2264 | /* If we got here, it means the command could not be parsed to a valid | |
2265 | bytecode expression and thus can't be evaluated on the target's side. | |
2266 | It's no use iterating through the other commands. */ | |
2267 | return NULL; | |
2268 | } | |
2269 | ||
2270 | do_cleanups (old_cleanups); | |
2271 | ||
2272 | /* We have a valid agent expression, return it. */ | |
2273 | return aexpr; | |
2274 | } | |
2275 | ||
2276 | /* Based on location BL, create a list of breakpoint commands to be | |
2277 | passed on to the target. If we have duplicated locations with | |
2278 | different commands, we will add any such to the list. */ | |
2279 | ||
2280 | static void | |
2281 | build_target_command_list (struct bp_location *bl) | |
2282 | { | |
2283 | struct bp_location **locp = NULL, **loc2p; | |
2284 | int null_command_or_parse_error = 0; | |
2285 | int modified = bl->needs_update; | |
2286 | struct bp_location *loc; | |
2287 | ||
2288 | /* For now, limit to agent-style dprintf breakpoints. */ | |
2289 | if (bl->owner->type != bp_dprintf | |
2290 | || strcmp (dprintf_style, dprintf_style_agent) != 0) | |
2291 | return; | |
2292 | ||
2293 | if (!target_can_run_breakpoint_commands ()) | |
2294 | return; | |
2295 | ||
2296 | /* Do a first pass to check for locations with no assigned | |
2297 | conditions or conditions that fail to parse to a valid agent expression | |
2298 | bytecode. If any of these happen, then it's no use to send conditions | |
2299 | to the target since this location will always trigger and generate a | |
2300 | response back to GDB. */ | |
2301 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2302 | { | |
2303 | loc = (*loc2p); | |
2304 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2305 | { | |
2306 | if (modified) | |
2307 | { | |
2308 | struct agent_expr *aexpr; | |
2309 | ||
2310 | /* Re-parse the commands since something changed. In that | |
2311 | case we already freed the command bytecodes (see | |
2312 | force_breakpoint_reinsertion). We just | |
2313 | need to parse the command to bytecodes again. */ | |
2314 | aexpr = parse_cmd_to_aexpr (bl->address, | |
2315 | loc->owner->extra_string); | |
2316 | loc->cmd_bytecode = aexpr; | |
2317 | ||
2318 | if (!aexpr) | |
2319 | continue; | |
2320 | } | |
2321 | ||
2322 | /* If we have a NULL bytecode expression, it means something | |
2323 | went wrong or we have a null command expression. */ | |
2324 | if (!loc->cmd_bytecode) | |
2325 | { | |
2326 | null_command_or_parse_error = 1; | |
2327 | break; | |
2328 | } | |
2329 | } | |
2330 | } | |
2331 | ||
2332 | /* If anything failed, then we're not doing target-side commands, | |
2333 | and so clean up. */ | |
2334 | if (null_command_or_parse_error) | |
2335 | { | |
2336 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2337 | { | |
2338 | loc = (*loc2p); | |
2339 | if (is_breakpoint (loc->owner) | |
2340 | && loc->pspace->num == bl->pspace->num) | |
2341 | { | |
2342 | /* Only go as far as the first NULL bytecode is | |
2343 | located. */ | |
2344 | if (!loc->cond_bytecode) | |
2345 | return; | |
2346 | ||
2347 | free_agent_expr (loc->cond_bytecode); | |
2348 | loc->cond_bytecode = NULL; | |
2349 | } | |
2350 | } | |
2351 | } | |
2352 | ||
2353 | /* No NULL commands or failed bytecode generation. Build a command list | |
2354 | for this location's address. */ | |
2355 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2356 | { | |
2357 | loc = (*loc2p); | |
2358 | if (loc->owner->extra_string | |
2359 | && is_breakpoint (loc->owner) | |
2360 | && loc->pspace->num == bl->pspace->num | |
2361 | && loc->owner->enable_state == bp_enabled | |
2362 | && loc->enabled) | |
2363 | /* Add the command to the vector. This will be used later | |
2364 | to send the commands to the target. */ | |
2365 | VEC_safe_push (agent_expr_p, bl->target_info.tcommands, | |
2366 | loc->cmd_bytecode); | |
2367 | } | |
2368 | ||
2369 | bl->target_info.persist = 0; | |
2370 | /* Maybe flag this location as persistent. */ | |
2371 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2372 | bl->target_info.persist = 1; | |
2373 | } | |
2374 | ||
35df4500 TJB |
2375 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2376 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2377 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2378 | Returns 0 for success, 1 if the bp_location type is not supported or |
2379 | -1 for failure. | |
879bfdc2 | 2380 | |
4a64f543 MS |
2381 | NOTE drow/2003-09-09: This routine could be broken down to an |
2382 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2383 | static int |
35df4500 | 2384 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2385 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2386 | int *disabled_breaks, |
dd61ec5c MW |
2387 | int *hw_breakpoint_error, |
2388 | int *hw_bp_error_explained_already) | |
879bfdc2 DJ |
2389 | { |
2390 | int val = 0; | |
dd61ec5c MW |
2391 | char *hw_bp_err_string = NULL; |
2392 | struct gdb_exception e; | |
879bfdc2 | 2393 | |
b775012e | 2394 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2395 | return 0; |
2396 | ||
35c63cd8 JB |
2397 | /* Note we don't initialize bl->target_info, as that wipes out |
2398 | the breakpoint location's shadow_contents if the breakpoint | |
2399 | is still inserted at that location. This in turn breaks | |
2400 | target_read_memory which depends on these buffers when | |
2401 | a memory read is requested at the breakpoint location: | |
2402 | Once the target_info has been wiped, we fail to see that | |
2403 | we have a breakpoint inserted at that address and thus | |
2404 | read the breakpoint instead of returning the data saved in | |
2405 | the breakpoint location's shadow contents. */ | |
35df4500 TJB |
2406 | bl->target_info.placed_address = bl->address; |
2407 | bl->target_info.placed_address_space = bl->pspace->aspace; | |
f1310107 | 2408 | bl->target_info.length = bl->length; |
8181d85f | 2409 | |
b775012e LM |
2410 | /* When working with target-side conditions, we must pass all the conditions |
2411 | for the same breakpoint address down to the target since GDB will not | |
2412 | insert those locations. With a list of breakpoint conditions, the target | |
2413 | can decide when to stop and notify GDB. */ | |
2414 | ||
2415 | if (is_breakpoint (bl->owner)) | |
2416 | { | |
2417 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2418 | build_target_command_list (bl); |
2419 | /* Reset the modification marker. */ | |
b775012e LM |
2420 | bl->needs_update = 0; |
2421 | } | |
2422 | ||
35df4500 TJB |
2423 | if (bl->loc_type == bp_loc_software_breakpoint |
2424 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 2425 | { |
35df4500 | 2426 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
2427 | { |
2428 | /* If the explicitly specified breakpoint type | |
2429 | is not hardware breakpoint, check the memory map to see | |
2430 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 2431 | |
765dc015 VP |
2432 | Two important cases are: |
2433 | - location type is not hardware breakpoint, memory | |
2434 | is readonly. We change the type of the location to | |
2435 | hardware breakpoint. | |
4a64f543 MS |
2436 | - location type is hardware breakpoint, memory is |
2437 | read-write. This means we've previously made the | |
2438 | location hardware one, but then the memory map changed, | |
2439 | so we undo. | |
765dc015 | 2440 | |
4a64f543 MS |
2441 | When breakpoints are removed, remove_breakpoints will use |
2442 | location types we've just set here, the only possible | |
2443 | problem is that memory map has changed during running | |
2444 | program, but it's not going to work anyway with current | |
2445 | gdb. */ | |
765dc015 | 2446 | struct mem_region *mr |
35df4500 | 2447 | = lookup_mem_region (bl->target_info.placed_address); |
765dc015 VP |
2448 | |
2449 | if (mr) | |
2450 | { | |
2451 | if (automatic_hardware_breakpoints) | |
2452 | { | |
765dc015 VP |
2453 | enum bp_loc_type new_type; |
2454 | ||
2455 | if (mr->attrib.mode != MEM_RW) | |
2456 | new_type = bp_loc_hardware_breakpoint; | |
2457 | else | |
2458 | new_type = bp_loc_software_breakpoint; | |
2459 | ||
35df4500 | 2460 | if (new_type != bl->loc_type) |
765dc015 VP |
2461 | { |
2462 | static int said = 0; | |
cc59ec59 | 2463 | |
35df4500 | 2464 | bl->loc_type = new_type; |
765dc015 VP |
2465 | if (!said) |
2466 | { | |
3e43a32a MS |
2467 | fprintf_filtered (gdb_stdout, |
2468 | _("Note: automatically using " | |
2469 | "hardware breakpoints for " | |
2470 | "read-only addresses.\n")); | |
765dc015 VP |
2471 | said = 1; |
2472 | } | |
2473 | } | |
2474 | } | |
35df4500 | 2475 | else if (bl->loc_type == bp_loc_software_breakpoint |
765dc015 | 2476 | && mr->attrib.mode != MEM_RW) |
3e43a32a MS |
2477 | warning (_("cannot set software breakpoint " |
2478 | "at readonly address %s"), | |
35df4500 | 2479 | paddress (bl->gdbarch, bl->address)); |
765dc015 VP |
2480 | } |
2481 | } | |
2482 | ||
879bfdc2 DJ |
2483 | /* First check to see if we have to handle an overlay. */ |
2484 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2485 | || bl->section == NULL |
2486 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2487 | { |
2488 | /* No overlay handling: just set the breakpoint. */ | |
dd61ec5c MW |
2489 | TRY_CATCH (e, RETURN_MASK_ALL) |
2490 | { | |
2491 | val = bl->owner->ops->insert_location (bl); | |
2492 | } | |
2493 | if (e.reason < 0) | |
2494 | { | |
2495 | val = 1; | |
2496 | hw_bp_err_string = (char *) e.message; | |
2497 | } | |
879bfdc2 DJ |
2498 | } |
2499 | else | |
2500 | { | |
4a64f543 | 2501 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2502 | Shall we set a breakpoint at the LMA? */ |
2503 | if (!overlay_events_enabled) | |
2504 | { | |
2505 | /* Yes -- overlay event support is not active, | |
2506 | so we must try to set a breakpoint at the LMA. | |
2507 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2508 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2509 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2510 | bl->owner->number); |
879bfdc2 DJ |
2511 | else |
2512 | { | |
35df4500 TJB |
2513 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2514 | bl->section); | |
879bfdc2 | 2515 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 TJB |
2516 | bl->overlay_target_info = bl->target_info; |
2517 | bl->overlay_target_info.placed_address = addr; | |
2518 | val = target_insert_breakpoint (bl->gdbarch, | |
2519 | &bl->overlay_target_info); | |
879bfdc2 | 2520 | if (val != 0) |
99361f52 | 2521 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
2522 | "Overlay breakpoint %d " |
2523 | "failed: in ROM?\n", | |
35df4500 | 2524 | bl->owner->number); |
879bfdc2 DJ |
2525 | } |
2526 | } | |
2527 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2528 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2529 | { |
2530 | /* Yes. This overlay section is mapped into memory. */ | |
dd61ec5c MW |
2531 | TRY_CATCH (e, RETURN_MASK_ALL) |
2532 | { | |
2533 | val = bl->owner->ops->insert_location (bl); | |
2534 | } | |
2535 | if (e.reason < 0) | |
2536 | { | |
2537 | val = 1; | |
2538 | hw_bp_err_string = (char *) e.message; | |
2539 | } | |
879bfdc2 DJ |
2540 | } |
2541 | else | |
2542 | { | |
2543 | /* No. This breakpoint will not be inserted. | |
2544 | No error, but do not mark the bp as 'inserted'. */ | |
2545 | return 0; | |
2546 | } | |
2547 | } | |
2548 | ||
2549 | if (val) | |
2550 | { | |
2551 | /* Can't set the breakpoint. */ | |
35df4500 | 2552 | if (solib_name_from_address (bl->pspace, bl->address)) |
879bfdc2 | 2553 | { |
4a64f543 | 2554 | /* See also: disable_breakpoints_in_shlibs. */ |
879bfdc2 | 2555 | val = 0; |
35df4500 | 2556 | bl->shlib_disabled = 1; |
8d3788bd | 2557 | observer_notify_breakpoint_modified (bl->owner); |
3fbb6ffa TJB |
2558 | if (!*disabled_breaks) |
2559 | { | |
2560 | fprintf_unfiltered (tmp_error_stream, | |
2561 | "Cannot insert breakpoint %d.\n", | |
2562 | bl->owner->number); | |
2563 | fprintf_unfiltered (tmp_error_stream, | |
2564 | "Temporarily disabling shared " | |
2565 | "library breakpoints:\n"); | |
2566 | } | |
2567 | *disabled_breaks = 1; | |
879bfdc2 | 2568 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 2569 | "breakpoint #%d\n", bl->owner->number); |
879bfdc2 DJ |
2570 | } |
2571 | else | |
879bfdc2 | 2572 | { |
35df4500 | 2573 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2574 | { |
dd61ec5c MW |
2575 | *hw_breakpoint_error = 1; |
2576 | *hw_bp_error_explained_already = hw_bp_err_string != NULL; | |
2577 | fprintf_unfiltered (tmp_error_stream, | |
2578 | "Cannot insert hardware breakpoint %d%s", | |
2579 | bl->owner->number, hw_bp_err_string ? ":" : ".\n"); | |
2580 | if (hw_bp_err_string) | |
2581 | fprintf_unfiltered (tmp_error_stream, "%s.\n", hw_bp_err_string); | |
879bfdc2 DJ |
2582 | } |
2583 | else | |
2584 | { | |
2585 | fprintf_unfiltered (tmp_error_stream, | |
2586 | "Cannot insert breakpoint %d.\n", | |
35df4500 | 2587 | bl->owner->number); |
879bfdc2 DJ |
2588 | fprintf_filtered (tmp_error_stream, |
2589 | "Error accessing memory address "); | |
35df4500 | 2590 | fputs_filtered (paddress (bl->gdbarch, bl->address), |
5af949e3 | 2591 | tmp_error_stream); |
879bfdc2 DJ |
2592 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
2593 | safe_strerror (val)); | |
2594 | } | |
2595 | ||
2596 | } | |
2597 | } | |
2598 | else | |
35df4500 | 2599 | bl->inserted = 1; |
879bfdc2 DJ |
2600 | |
2601 | return val; | |
2602 | } | |
2603 | ||
35df4500 | 2604 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2605 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2606 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2607 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2608 | { |
77b06cd7 TJB |
2609 | gdb_assert (bl->owner->ops != NULL |
2610 | && bl->owner->ops->insert_location != NULL); | |
2611 | ||
2612 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2613 | |
2614 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2615 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2616 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
2617 | { |
2618 | struct bp_location *loc, **loc_temp; | |
2619 | ||
2620 | /* But don't try to insert it, if there's already another | |
2621 | hw_access location that would be considered a duplicate | |
2622 | of this one. */ | |
2623 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 2624 | if (loc != bl |
85d721b8 | 2625 | && loc->watchpoint_type == hw_access |
35df4500 | 2626 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2627 | { |
35df4500 TJB |
2628 | bl->duplicate = 1; |
2629 | bl->inserted = 1; | |
2630 | bl->target_info = loc->target_info; | |
2631 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2632 | val = 0; |
2633 | break; | |
2634 | } | |
2635 | ||
2636 | if (val == 1) | |
2637 | { | |
77b06cd7 TJB |
2638 | bl->watchpoint_type = hw_access; |
2639 | val = bl->owner->ops->insert_location (bl); | |
2640 | ||
2641 | if (val) | |
2642 | /* Back to the original value. */ | |
2643 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2644 | } |
2645 | } | |
2646 | ||
35df4500 | 2647 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2648 | } |
2649 | ||
35df4500 | 2650 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2651 | { |
77b06cd7 TJB |
2652 | gdb_assert (bl->owner->ops != NULL |
2653 | && bl->owner->ops->insert_location != NULL); | |
2654 | ||
2655 | val = bl->owner->ops->insert_location (bl); | |
2656 | if (val) | |
2657 | { | |
2658 | bl->owner->enable_state = bp_disabled; | |
2659 | ||
2660 | if (val == 1) | |
2661 | warning (_("\ | |
2662 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2663 | of catchpoint."), bl->owner->number); | |
2664 | else | |
2665 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2666 | } | |
2667 | ||
2668 | bl->inserted = (val == 0); | |
1640b821 DJ |
2669 | |
2670 | /* We've already printed an error message if there was a problem | |
2671 | inserting this catchpoint, and we've disabled the catchpoint, | |
2672 | so just return success. */ | |
2673 | return 0; | |
879bfdc2 DJ |
2674 | } |
2675 | ||
2676 | return 0; | |
2677 | } | |
2678 | ||
6c95b8df PA |
2679 | /* This function is called when program space PSPACE is about to be |
2680 | deleted. It takes care of updating breakpoints to not reference | |
2681 | PSPACE anymore. */ | |
2682 | ||
2683 | void | |
2684 | breakpoint_program_space_exit (struct program_space *pspace) | |
2685 | { | |
2686 | struct breakpoint *b, *b_temp; | |
876fa593 | 2687 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
2688 | |
2689 | /* Remove any breakpoint that was set through this program space. */ | |
2690 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
2691 | { | |
2692 | if (b->pspace == pspace) | |
2693 | delete_breakpoint (b); | |
2694 | } | |
2695 | ||
2696 | /* Breakpoints set through other program spaces could have locations | |
2697 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 2698 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
2699 | { |
2700 | struct bp_location *tmp; | |
2701 | ||
2702 | if (loc->pspace == pspace) | |
2703 | { | |
2bdf28a0 | 2704 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2705 | if (loc->owner->loc == loc) |
2706 | loc->owner->loc = loc->next; | |
2707 | else | |
2708 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2709 | if (tmp->next == loc) | |
2710 | { | |
2711 | tmp->next = loc->next; | |
2712 | break; | |
2713 | } | |
2714 | } | |
2715 | } | |
2716 | ||
2717 | /* Now update the global location list to permanently delete the | |
2718 | removed locations above. */ | |
2719 | update_global_location_list (0); | |
2720 | } | |
2721 | ||
74960c60 VP |
2722 | /* Make sure all breakpoints are inserted in inferior. |
2723 | Throws exception on any error. | |
2724 | A breakpoint that is already inserted won't be inserted | |
2725 | again, so calling this function twice is safe. */ | |
2726 | void | |
2727 | insert_breakpoints (void) | |
2728 | { | |
2729 | struct breakpoint *bpt; | |
2730 | ||
2731 | ALL_BREAKPOINTS (bpt) | |
2732 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
2733 | { |
2734 | struct watchpoint *w = (struct watchpoint *) bpt; | |
2735 | ||
2736 | update_watchpoint (w, 0 /* don't reparse. */); | |
2737 | } | |
74960c60 | 2738 | |
b60e7edf | 2739 | update_global_location_list (1); |
74960c60 | 2740 | |
c35b1492 PA |
2741 | /* update_global_location_list does not insert breakpoints when |
2742 | always_inserted_mode is not enabled. Explicitly insert them | |
2743 | now. */ | |
2744 | if (!breakpoints_always_inserted_mode ()) | |
74960c60 VP |
2745 | insert_breakpoint_locations (); |
2746 | } | |
2747 | ||
20388dd6 YQ |
2748 | /* Invoke CALLBACK for each of bp_location. */ |
2749 | ||
2750 | void | |
2751 | iterate_over_bp_locations (walk_bp_location_callback callback) | |
2752 | { | |
2753 | struct bp_location *loc, **loc_tmp; | |
2754 | ||
2755 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
2756 | { | |
2757 | callback (loc, NULL); | |
2758 | } | |
2759 | } | |
2760 | ||
b775012e LM |
2761 | /* This is used when we need to synch breakpoint conditions between GDB and the |
2762 | target. It is the case with deleting and disabling of breakpoints when using | |
2763 | always-inserted mode. */ | |
2764 | ||
2765 | static void | |
2766 | update_inserted_breakpoint_locations (void) | |
2767 | { | |
2768 | struct bp_location *bl, **blp_tmp; | |
2769 | int error_flag = 0; | |
2770 | int val = 0; | |
2771 | int disabled_breaks = 0; | |
2772 | int hw_breakpoint_error = 0; | |
dd61ec5c | 2773 | int hw_bp_details_reported = 0; |
b775012e LM |
2774 | |
2775 | struct ui_file *tmp_error_stream = mem_fileopen (); | |
2776 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); | |
2777 | ||
2778 | /* Explicitly mark the warning -- this will only be printed if | |
2779 | there was an error. */ | |
2780 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
2781 | ||
2782 | save_current_space_and_thread (); | |
2783 | ||
2784 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
2785 | { | |
2786 | /* We only want to update software breakpoints and hardware | |
2787 | breakpoints. */ | |
2788 | if (!is_breakpoint (bl->owner)) | |
2789 | continue; | |
2790 | ||
2791 | /* We only want to update locations that are already inserted | |
2792 | and need updating. This is to avoid unwanted insertion during | |
2793 | deletion of breakpoints. */ | |
2794 | if (!bl->inserted || (bl->inserted && !bl->needs_update)) | |
2795 | continue; | |
2796 | ||
2797 | switch_to_program_space_and_thread (bl->pspace); | |
2798 | ||
2799 | /* For targets that support global breakpoints, there's no need | |
2800 | to select an inferior to insert breakpoint to. In fact, even | |
2801 | if we aren't attached to any process yet, we should still | |
2802 | insert breakpoints. */ | |
f5656ead | 2803 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
b775012e LM |
2804 | && ptid_equal (inferior_ptid, null_ptid)) |
2805 | continue; | |
2806 | ||
2807 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, | |
dd61ec5c | 2808 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
2809 | if (val) |
2810 | error_flag = val; | |
2811 | } | |
2812 | ||
2813 | if (error_flag) | |
2814 | { | |
2815 | target_terminal_ours_for_output (); | |
2816 | error_stream (tmp_error_stream); | |
2817 | } | |
2818 | ||
2819 | do_cleanups (cleanups); | |
2820 | } | |
2821 | ||
c30eee59 | 2822 | /* Used when starting or continuing the program. */ |
c906108c | 2823 | |
74960c60 VP |
2824 | static void |
2825 | insert_breakpoint_locations (void) | |
c906108c | 2826 | { |
a5606eee | 2827 | struct breakpoint *bpt; |
35df4500 | 2828 | struct bp_location *bl, **blp_tmp; |
eacd795a | 2829 | int error_flag = 0; |
c906108c | 2830 | int val = 0; |
3fbb6ffa | 2831 | int disabled_breaks = 0; |
81d0cc19 | 2832 | int hw_breakpoint_error = 0; |
dd61ec5c | 2833 | int hw_bp_error_explained_already = 0; |
c906108c | 2834 | |
81d0cc19 | 2835 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 2836 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 2837 | |
81d0cc19 GS |
2838 | /* Explicitly mark the warning -- this will only be printed if |
2839 | there was an error. */ | |
2840 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
6c95b8df PA |
2841 | |
2842 | save_current_space_and_thread (); | |
2843 | ||
35df4500 | 2844 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 2845 | { |
b775012e | 2846 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2847 | continue; |
2848 | ||
4a64f543 MS |
2849 | /* There is no point inserting thread-specific breakpoints if |
2850 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
2851 | has BL->OWNER always non-NULL. */ | |
35df4500 TJB |
2852 | if (bl->owner->thread != -1 |
2853 | && !valid_thread_id (bl->owner->thread)) | |
f365de73 AS |
2854 | continue; |
2855 | ||
35df4500 | 2856 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
2857 | |
2858 | /* For targets that support global breakpoints, there's no need | |
2859 | to select an inferior to insert breakpoint to. In fact, even | |
2860 | if we aren't attached to any process yet, we should still | |
2861 | insert breakpoints. */ | |
f5656ead | 2862 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
2863 | && ptid_equal (inferior_ptid, null_ptid)) |
2864 | continue; | |
2865 | ||
3fbb6ffa | 2866 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2867 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 2868 | if (val) |
eacd795a | 2869 | error_flag = val; |
879bfdc2 | 2870 | } |
c906108c | 2871 | |
4a64f543 MS |
2872 | /* If we failed to insert all locations of a watchpoint, remove |
2873 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
2874 | ALL_BREAKPOINTS (bpt) |
2875 | { | |
2876 | int some_failed = 0; | |
2877 | struct bp_location *loc; | |
2878 | ||
2879 | if (!is_hardware_watchpoint (bpt)) | |
2880 | continue; | |
2881 | ||
d6b74ac4 | 2882 | if (!breakpoint_enabled (bpt)) |
a5606eee | 2883 | continue; |
74960c60 VP |
2884 | |
2885 | if (bpt->disposition == disp_del_at_next_stop) | |
2886 | continue; | |
a5606eee VP |
2887 | |
2888 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 2889 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
2890 | { |
2891 | some_failed = 1; | |
2892 | break; | |
2893 | } | |
2894 | if (some_failed) | |
2895 | { | |
2896 | for (loc = bpt->loc; loc; loc = loc->next) | |
2897 | if (loc->inserted) | |
2898 | remove_breakpoint (loc, mark_uninserted); | |
2899 | ||
2900 | hw_breakpoint_error = 1; | |
2901 | fprintf_unfiltered (tmp_error_stream, | |
2902 | "Could not insert hardware watchpoint %d.\n", | |
2903 | bpt->number); | |
eacd795a | 2904 | error_flag = -1; |
a5606eee VP |
2905 | } |
2906 | } | |
2907 | ||
eacd795a | 2908 | if (error_flag) |
81d0cc19 GS |
2909 | { |
2910 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
2911 | message about possibly exhausted resources. */ | |
dd61ec5c | 2912 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 2913 | { |
c6510018 MS |
2914 | fprintf_unfiltered (tmp_error_stream, |
2915 | "Could not insert hardware breakpoints:\n\ | |
2916 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 2917 | } |
81d0cc19 GS |
2918 | target_terminal_ours_for_output (); |
2919 | error_stream (tmp_error_stream); | |
2920 | } | |
f7545552 TT |
2921 | |
2922 | do_cleanups (cleanups); | |
c906108c SS |
2923 | } |
2924 | ||
c30eee59 TJB |
2925 | /* Used when the program stops. |
2926 | Returns zero if successful, or non-zero if there was a problem | |
2927 | removing a breakpoint location. */ | |
2928 | ||
c906108c | 2929 | int |
fba45db2 | 2930 | remove_breakpoints (void) |
c906108c | 2931 | { |
35df4500 | 2932 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 2933 | int val = 0; |
c906108c | 2934 | |
35df4500 | 2935 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2936 | { |
1e4d1764 | 2937 | if (bl->inserted && !is_tracepoint (bl->owner)) |
35df4500 | 2938 | val |= remove_breakpoint (bl, mark_uninserted); |
c5aa993b | 2939 | } |
3a1bae8e | 2940 | return val; |
c906108c SS |
2941 | } |
2942 | ||
6c95b8df PA |
2943 | /* Remove breakpoints of process PID. */ |
2944 | ||
2945 | int | |
2946 | remove_breakpoints_pid (int pid) | |
2947 | { | |
35df4500 | 2948 | struct bp_location *bl, **blp_tmp; |
6c95b8df PA |
2949 | int val; |
2950 | struct inferior *inf = find_inferior_pid (pid); | |
2951 | ||
35df4500 | 2952 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 2953 | { |
35df4500 | 2954 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2955 | continue; |
2956 | ||
d3ce09f5 SS |
2957 | if (bl->owner->type == bp_dprintf) |
2958 | continue; | |
2959 | ||
35df4500 | 2960 | if (bl->inserted) |
6c95b8df | 2961 | { |
35df4500 | 2962 | val = remove_breakpoint (bl, mark_uninserted); |
6c95b8df PA |
2963 | if (val != 0) |
2964 | return val; | |
2965 | } | |
2966 | } | |
2967 | return 0; | |
2968 | } | |
2969 | ||
c906108c | 2970 | int |
fba45db2 | 2971 | reattach_breakpoints (int pid) |
c906108c | 2972 | { |
6c95b8df | 2973 | struct cleanup *old_chain; |
35df4500 | 2974 | struct bp_location *bl, **blp_tmp; |
c906108c | 2975 | int val; |
86b887df | 2976 | struct ui_file *tmp_error_stream; |
dd61ec5c | 2977 | int dummy1 = 0, dummy2 = 0, dummy3 = 0; |
6c95b8df PA |
2978 | struct inferior *inf; |
2979 | struct thread_info *tp; | |
2980 | ||
2981 | tp = any_live_thread_of_process (pid); | |
2982 | if (tp == NULL) | |
2983 | return 1; | |
2984 | ||
2985 | inf = find_inferior_pid (pid); | |
2986 | old_chain = save_inferior_ptid (); | |
2987 | ||
2988 | inferior_ptid = tp->ptid; | |
a4954f26 | 2989 | |
86b887df | 2990 | tmp_error_stream = mem_fileopen (); |
a4954f26 | 2991 | make_cleanup_ui_file_delete (tmp_error_stream); |
c906108c | 2992 | |
35df4500 | 2993 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2994 | { |
35df4500 | 2995 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2996 | continue; |
2997 | ||
35df4500 | 2998 | if (bl->inserted) |
c5aa993b | 2999 | { |
35df4500 | 3000 | bl->inserted = 0; |
dd61ec5c | 3001 | val = insert_bp_location (bl, tmp_error_stream, &dummy1, &dummy2, &dummy3); |
c5aa993b JM |
3002 | if (val != 0) |
3003 | { | |
ce696e05 | 3004 | do_cleanups (old_chain); |
c5aa993b JM |
3005 | return val; |
3006 | } | |
3007 | } | |
3008 | } | |
ce696e05 | 3009 | do_cleanups (old_chain); |
c906108c SS |
3010 | return 0; |
3011 | } | |
3012 | ||
e58b0e63 PA |
3013 | static int internal_breakpoint_number = -1; |
3014 | ||
84f4c1fe PM |
3015 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3016 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3017 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3018 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3019 | breakpoint_count and that value incremented. Internal breakpoints |
3020 | do not set the internal var bpnum. */ | |
3021 | static void | |
3022 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3023 | { | |
3024 | if (internal) | |
3025 | b->number = internal_breakpoint_number--; | |
3026 | else | |
3027 | { | |
3028 | set_breakpoint_count (breakpoint_count + 1); | |
3029 | b->number = breakpoint_count; | |
3030 | } | |
3031 | } | |
3032 | ||
e62c965a | 3033 | static struct breakpoint * |
a6d9a66e | 3034 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 3035 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 3036 | const struct breakpoint_ops *ops) |
e62c965a | 3037 | { |
e62c965a PP |
3038 | struct symtab_and_line sal; |
3039 | struct breakpoint *b; | |
3040 | ||
4a64f543 | 3041 | init_sal (&sal); /* Initialize to zeroes. */ |
e62c965a PP |
3042 | |
3043 | sal.pc = address; | |
3044 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 3045 | sal.pspace = current_program_space; |
e62c965a | 3046 | |
06edf0c0 | 3047 | b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
3048 | b->number = internal_breakpoint_number--; |
3049 | b->disposition = disp_donttouch; | |
3050 | ||
3051 | return b; | |
3052 | } | |
3053 | ||
17450429 PP |
3054 | static const char *const longjmp_names[] = |
3055 | { | |
3056 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3057 | }; | |
3058 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3059 | ||
3060 | /* Per-objfile data private to breakpoint.c. */ | |
3061 | struct breakpoint_objfile_data | |
3062 | { | |
3063 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
3064 | struct minimal_symbol *overlay_msym; | |
3065 | ||
3066 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
3067 | struct minimal_symbol *longjmp_msym[NUM_LONGJMP_NAMES]; | |
3068 | ||
28106bc2 SDJ |
3069 | /* True if we have looked for longjmp probes. */ |
3070 | int longjmp_searched; | |
3071 | ||
3072 | /* SystemTap probe points for longjmp (if any). */ | |
3073 | VEC (probe_p) *longjmp_probes; | |
3074 | ||
17450429 PP |
3075 | /* Minimal symbol for "std::terminate()" (if any). */ |
3076 | struct minimal_symbol *terminate_msym; | |
3077 | ||
3078 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
3079 | struct minimal_symbol *exception_msym; | |
28106bc2 SDJ |
3080 | |
3081 | /* True if we have looked for exception probes. */ | |
3082 | int exception_searched; | |
3083 | ||
3084 | /* SystemTap probe points for unwinding (if any). */ | |
3085 | VEC (probe_p) *exception_probes; | |
17450429 PP |
3086 | }; |
3087 | ||
3088 | static const struct objfile_data *breakpoint_objfile_key; | |
3089 | ||
3090 | /* Minimal symbol not found sentinel. */ | |
3091 | static struct minimal_symbol msym_not_found; | |
3092 | ||
3093 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3094 | ||
3095 | static int | |
3096 | msym_not_found_p (const struct minimal_symbol *msym) | |
3097 | { | |
3098 | return msym == &msym_not_found; | |
3099 | } | |
3100 | ||
3101 | /* Return per-objfile data needed by breakpoint.c. | |
3102 | Allocate the data if necessary. */ | |
3103 | ||
3104 | static struct breakpoint_objfile_data * | |
3105 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3106 | { | |
3107 | struct breakpoint_objfile_data *bp_objfile_data; | |
3108 | ||
3109 | bp_objfile_data = objfile_data (objfile, breakpoint_objfile_key); | |
3110 | if (bp_objfile_data == NULL) | |
3111 | { | |
3112 | bp_objfile_data = obstack_alloc (&objfile->objfile_obstack, | |
3113 | sizeof (*bp_objfile_data)); | |
3114 | ||
3115 | memset (bp_objfile_data, 0, sizeof (*bp_objfile_data)); | |
3116 | set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data); | |
3117 | } | |
3118 | return bp_objfile_data; | |
3119 | } | |
3120 | ||
28106bc2 SDJ |
3121 | static void |
3122 | free_breakpoint_probes (struct objfile *obj, void *data) | |
3123 | { | |
3124 | struct breakpoint_objfile_data *bp_objfile_data = data; | |
3125 | ||
3126 | VEC_free (probe_p, bp_objfile_data->longjmp_probes); | |
3127 | VEC_free (probe_p, bp_objfile_data->exception_probes); | |
3128 | } | |
3129 | ||
e62c965a | 3130 | static void |
af02033e | 3131 | create_overlay_event_breakpoint (void) |
e62c965a | 3132 | { |
69de3c6a | 3133 | struct objfile *objfile; |
af02033e | 3134 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3135 | |
69de3c6a PP |
3136 | ALL_OBJFILES (objfile) |
3137 | { | |
3138 | struct breakpoint *b; | |
17450429 PP |
3139 | struct breakpoint_objfile_data *bp_objfile_data; |
3140 | CORE_ADDR addr; | |
69de3c6a | 3141 | |
17450429 PP |
3142 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3143 | ||
3144 | if (msym_not_found_p (bp_objfile_data->overlay_msym)) | |
3145 | continue; | |
3146 | ||
3147 | if (bp_objfile_data->overlay_msym == NULL) | |
3148 | { | |
3149 | struct minimal_symbol *m; | |
3150 | ||
3151 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3152 | if (m == NULL) | |
3153 | { | |
3154 | /* Avoid future lookups in this objfile. */ | |
3155 | bp_objfile_data->overlay_msym = &msym_not_found; | |
3156 | continue; | |
3157 | } | |
3158 | bp_objfile_data->overlay_msym = m; | |
3159 | } | |
e62c965a | 3160 | |
17450429 PP |
3161 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
3162 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
06edf0c0 PA |
3163 | bp_overlay_event, |
3164 | &internal_breakpoint_ops); | |
69de3c6a | 3165 | b->addr_string = xstrdup (func_name); |
e62c965a | 3166 | |
69de3c6a PP |
3167 | if (overlay_debugging == ovly_auto) |
3168 | { | |
3169 | b->enable_state = bp_enabled; | |
3170 | overlay_events_enabled = 1; | |
3171 | } | |
3172 | else | |
3173 | { | |
3174 | b->enable_state = bp_disabled; | |
3175 | overlay_events_enabled = 0; | |
3176 | } | |
e62c965a PP |
3177 | } |
3178 | update_global_location_list (1); | |
3179 | } | |
3180 | ||
0fd8e87f | 3181 | static void |
af02033e | 3182 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 3183 | { |
6c95b8df | 3184 | struct program_space *pspace; |
6c95b8df PA |
3185 | struct cleanup *old_chain; |
3186 | ||
3187 | old_chain = save_current_program_space (); | |
0fd8e87f | 3188 | |
6c95b8df | 3189 | ALL_PSPACES (pspace) |
af02033e PP |
3190 | { |
3191 | struct objfile *objfile; | |
3192 | ||
3193 | set_current_program_space (pspace); | |
3194 | ||
3195 | ALL_OBJFILES (objfile) | |
0fd8e87f | 3196 | { |
af02033e PP |
3197 | int i; |
3198 | struct gdbarch *gdbarch; | |
17450429 | 3199 | struct breakpoint_objfile_data *bp_objfile_data; |
0fd8e87f | 3200 | |
af02033e PP |
3201 | gdbarch = get_objfile_arch (objfile); |
3202 | if (!gdbarch_get_longjmp_target_p (gdbarch)) | |
0fd8e87f UW |
3203 | continue; |
3204 | ||
17450429 PP |
3205 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3206 | ||
28106bc2 SDJ |
3207 | if (!bp_objfile_data->longjmp_searched) |
3208 | { | |
3209 | bp_objfile_data->longjmp_probes | |
3210 | = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
3211 | bp_objfile_data->longjmp_searched = 1; | |
3212 | } | |
3213 | ||
3214 | if (bp_objfile_data->longjmp_probes != NULL) | |
3215 | { | |
3216 | int i; | |
3217 | struct probe *probe; | |
3218 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3219 | ||
3220 | for (i = 0; | |
3221 | VEC_iterate (probe_p, | |
3222 | bp_objfile_data->longjmp_probes, | |
3223 | i, probe); | |
3224 | ++i) | |
3225 | { | |
3226 | struct breakpoint *b; | |
3227 | ||
3228 | b = create_internal_breakpoint (gdbarch, probe->address, | |
3229 | bp_longjmp_master, | |
3230 | &internal_breakpoint_ops); | |
3231 | b->addr_string = xstrdup ("-probe-stap libc:longjmp"); | |
3232 | b->enable_state = bp_disabled; | |
3233 | } | |
3234 | ||
3235 | continue; | |
3236 | } | |
3237 | ||
17450429 | 3238 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) |
af02033e PP |
3239 | { |
3240 | struct breakpoint *b; | |
af02033e | 3241 | const char *func_name; |
17450429 | 3242 | CORE_ADDR addr; |
6c95b8df | 3243 | |
17450429 | 3244 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i])) |
af02033e | 3245 | continue; |
0fd8e87f | 3246 | |
17450429 PP |
3247 | func_name = longjmp_names[i]; |
3248 | if (bp_objfile_data->longjmp_msym[i] == NULL) | |
3249 | { | |
3250 | struct minimal_symbol *m; | |
3251 | ||
3252 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3253 | if (m == NULL) | |
3254 | { | |
3255 | /* Prevent future lookups in this objfile. */ | |
3256 | bp_objfile_data->longjmp_msym[i] = &msym_not_found; | |
3257 | continue; | |
3258 | } | |
3259 | bp_objfile_data->longjmp_msym[i] = m; | |
3260 | } | |
3261 | ||
3262 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); | |
06edf0c0 PA |
3263 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, |
3264 | &internal_breakpoint_ops); | |
af02033e PP |
3265 | b->addr_string = xstrdup (func_name); |
3266 | b->enable_state = bp_disabled; | |
3267 | } | |
0fd8e87f | 3268 | } |
af02033e | 3269 | } |
0fd8e87f | 3270 | update_global_location_list (1); |
6c95b8df PA |
3271 | |
3272 | do_cleanups (old_chain); | |
0fd8e87f UW |
3273 | } |
3274 | ||
af02033e | 3275 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3276 | static void |
af02033e | 3277 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
3278 | { |
3279 | struct program_space *pspace; | |
aa7d318d | 3280 | struct cleanup *old_chain; |
af02033e | 3281 | const char *const func_name = "std::terminate()"; |
aa7d318d TT |
3282 | |
3283 | old_chain = save_current_program_space (); | |
3284 | ||
3285 | ALL_PSPACES (pspace) | |
17450429 PP |
3286 | { |
3287 | struct objfile *objfile; | |
3288 | CORE_ADDR addr; | |
3289 | ||
3290 | set_current_program_space (pspace); | |
3291 | ||
aa7d318d TT |
3292 | ALL_OBJFILES (objfile) |
3293 | { | |
3294 | struct breakpoint *b; | |
17450429 | 3295 | struct breakpoint_objfile_data *bp_objfile_data; |
aa7d318d | 3296 | |
17450429 | 3297 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3298 | |
17450429 PP |
3299 | if (msym_not_found_p (bp_objfile_data->terminate_msym)) |
3300 | continue; | |
3301 | ||
3302 | if (bp_objfile_data->terminate_msym == NULL) | |
3303 | { | |
3304 | struct minimal_symbol *m; | |
3305 | ||
3306 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
3307 | if (m == NULL || (MSYMBOL_TYPE (m) != mst_text | |
3308 | && MSYMBOL_TYPE (m) != mst_file_text)) | |
3309 | { | |
3310 | /* Prevent future lookups in this objfile. */ | |
3311 | bp_objfile_data->terminate_msym = &msym_not_found; | |
3312 | continue; | |
3313 | } | |
3314 | bp_objfile_data->terminate_msym = m; | |
3315 | } | |
aa7d318d | 3316 | |
17450429 PP |
3317 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
3318 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
06edf0c0 PA |
3319 | bp_std_terminate_master, |
3320 | &internal_breakpoint_ops); | |
aa7d318d TT |
3321 | b->addr_string = xstrdup (func_name); |
3322 | b->enable_state = bp_disabled; | |
3323 | } | |
17450429 PP |
3324 | } |
3325 | ||
aa7d318d TT |
3326 | update_global_location_list (1); |
3327 | ||
3328 | do_cleanups (old_chain); | |
3329 | } | |
3330 | ||
186c406b TT |
3331 | /* Install a master breakpoint on the unwinder's debug hook. */ |
3332 | ||
70221824 | 3333 | static void |
186c406b TT |
3334 | create_exception_master_breakpoint (void) |
3335 | { | |
3336 | struct objfile *objfile; | |
17450429 | 3337 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b TT |
3338 | |
3339 | ALL_OBJFILES (objfile) | |
3340 | { | |
17450429 PP |
3341 | struct breakpoint *b; |
3342 | struct gdbarch *gdbarch; | |
3343 | struct breakpoint_objfile_data *bp_objfile_data; | |
3344 | CORE_ADDR addr; | |
3345 | ||
3346 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
3347 | ||
28106bc2 SDJ |
3348 | /* We prefer the SystemTap probe point if it exists. */ |
3349 | if (!bp_objfile_data->exception_searched) | |
3350 | { | |
3351 | bp_objfile_data->exception_probes | |
3352 | = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
3353 | bp_objfile_data->exception_searched = 1; | |
3354 | } | |
3355 | ||
3356 | if (bp_objfile_data->exception_probes != NULL) | |
3357 | { | |
3358 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3359 | int i; | |
3360 | struct probe *probe; | |
3361 | ||
3362 | for (i = 0; | |
3363 | VEC_iterate (probe_p, | |
3364 | bp_objfile_data->exception_probes, | |
3365 | i, probe); | |
3366 | ++i) | |
3367 | { | |
3368 | struct breakpoint *b; | |
3369 | ||
3370 | b = create_internal_breakpoint (gdbarch, probe->address, | |
3371 | bp_exception_master, | |
3372 | &internal_breakpoint_ops); | |
3373 | b->addr_string = xstrdup ("-probe-stap libgcc:unwind"); | |
3374 | b->enable_state = bp_disabled; | |
3375 | } | |
3376 | ||
3377 | continue; | |
3378 | } | |
3379 | ||
3380 | /* Otherwise, try the hook function. */ | |
3381 | ||
17450429 PP |
3382 | if (msym_not_found_p (bp_objfile_data->exception_msym)) |
3383 | continue; | |
3384 | ||
3385 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 3386 | |
17450429 | 3387 | if (bp_objfile_data->exception_msym == NULL) |
186c406b | 3388 | { |
17450429 | 3389 | struct minimal_symbol *debug_hook; |
186c406b | 3390 | |
17450429 PP |
3391 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
3392 | if (debug_hook == NULL) | |
3393 | { | |
3394 | bp_objfile_data->exception_msym = &msym_not_found; | |
3395 | continue; | |
3396 | } | |
3397 | ||
3398 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 3399 | } |
17450429 PP |
3400 | |
3401 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); | |
3402 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, | |
3403 | ¤t_target); | |
06edf0c0 PA |
3404 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3405 | &internal_breakpoint_ops); | |
17450429 PP |
3406 | b->addr_string = xstrdup (func_name); |
3407 | b->enable_state = bp_disabled; | |
186c406b TT |
3408 | } |
3409 | ||
3410 | update_global_location_list (1); | |
3411 | } | |
3412 | ||
c906108c | 3413 | void |
fba45db2 | 3414 | update_breakpoints_after_exec (void) |
c906108c | 3415 | { |
35df4500 | 3416 | struct breakpoint *b, *b_tmp; |
876fa593 | 3417 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 3418 | |
25b22b0a PA |
3419 | /* We're about to delete breakpoints from GDB's lists. If the |
3420 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3421 | writing the breakpoints' "shadow contents" back into memory. The | |
3422 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3423 | do that. Instead, the target is responsible from marking | |
3424 | breakpoints out as soon as it detects an exec. We don't do that | |
3425 | here instead, because there may be other attempts to delete | |
3426 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 3427 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
3428 | if (bploc->pspace == current_program_space) |
3429 | gdb_assert (!bploc->inserted); | |
c906108c | 3430 | |
35df4500 | 3431 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3432 | { |
6c95b8df PA |
3433 | if (b->pspace != current_program_space) |
3434 | continue; | |
3435 | ||
4a64f543 | 3436 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3437 | if (b->type == bp_shlib_event) |
3438 | { | |
3439 | delete_breakpoint (b); | |
3440 | continue; | |
3441 | } | |
c906108c | 3442 | |
4a64f543 | 3443 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3444 | if (b->type == bp_jit_event) |
3445 | { | |
3446 | delete_breakpoint (b); | |
3447 | continue; | |
3448 | } | |
3449 | ||
1900040c | 3450 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3451 | as must overlay event and longjmp master breakpoints. */ |
3452 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3453 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3454 | || b->type == bp_exception_master) | |
c4093a6a JM |
3455 | { |
3456 | delete_breakpoint (b); | |
3457 | continue; | |
3458 | } | |
3459 | ||
4a64f543 | 3460 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3461 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3462 | { |
3463 | delete_breakpoint (b); | |
3464 | continue; | |
3465 | } | |
3466 | ||
611c83ae PA |
3467 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3468 | after an exec. */ | |
186c406b | 3469 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
e2e4d78b | 3470 | || b->type == bp_longjmp_call_dummy |
186c406b | 3471 | || b->type == bp_exception || b->type == bp_exception_resume) |
611c83ae PA |
3472 | { |
3473 | delete_breakpoint (b); | |
3474 | continue; | |
3475 | } | |
3476 | ||
ce78b96d JB |
3477 | if (b->type == bp_catchpoint) |
3478 | { | |
3479 | /* For now, none of the bp_catchpoint breakpoints need to | |
3480 | do anything at this point. In the future, if some of | |
3481 | the catchpoints need to something, we will need to add | |
3482 | a new method, and call this method from here. */ | |
3483 | continue; | |
3484 | } | |
3485 | ||
c5aa993b JM |
3486 | /* bp_finish is a special case. The only way we ought to be able |
3487 | to see one of these when an exec() has happened, is if the user | |
3488 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3489 | carries them to the call-site of the current callee, by setting | |
3490 | a temporary bp there and resuming. But in this case, the finish | |
3491 | will carry them entirely through the vfork & exec. | |
3492 | ||
3493 | We don't want to allow a bp_finish to remain inserted now. But | |
3494 | we can't safely delete it, 'cause finish_command has a handle to | |
3495 | the bp on a bpstat, and will later want to delete it. There's a | |
3496 | chance (and I've seen it happen) that if we delete the bp_finish | |
3497 | here, that its storage will get reused by the time finish_command | |
3498 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3499 | We really must allow finish_command to delete a bp_finish. | |
3500 | ||
e5dd4106 | 3501 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3502 | it's safe to delete something others may have handles to?" |
3503 | problem, what we'll do here is just uninsert the bp_finish, and | |
3504 | let finish_command delete it. | |
3505 | ||
3506 | (We know the bp_finish is "doomed" in the sense that it's | |
3507 | momentary, and will be deleted as soon as finish_command sees | |
3508 | the inferior stopped. So it doesn't matter that the bp's | |
3509 | address is probably bogus in the new a.out, unlike e.g., the | |
3510 | solib breakpoints.) */ | |
c5aa993b | 3511 | |
c5aa993b JM |
3512 | if (b->type == bp_finish) |
3513 | { | |
3514 | continue; | |
3515 | } | |
3516 | ||
3517 | /* Without a symbolic address, we have little hope of the | |
3518 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3519 | a.out. */ |
c5aa993b JM |
3520 | if (b->addr_string == NULL) |
3521 | { | |
3522 | delete_breakpoint (b); | |
3523 | continue; | |
3524 | } | |
c5aa993b | 3525 | } |
1900040c | 3526 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
af02033e PP |
3527 | create_overlay_event_breakpoint (); |
3528 | create_longjmp_master_breakpoint (); | |
3529 | create_std_terminate_master_breakpoint (); | |
186c406b | 3530 | create_exception_master_breakpoint (); |
c906108c SS |
3531 | } |
3532 | ||
3533 | int | |
d80ee84f | 3534 | detach_breakpoints (ptid_t ptid) |
c906108c | 3535 | { |
35df4500 | 3536 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3537 | int val = 0; |
ce696e05 | 3538 | struct cleanup *old_chain = save_inferior_ptid (); |
6c95b8df | 3539 | struct inferior *inf = current_inferior (); |
c5aa993b | 3540 | |
d80ee84f | 3541 | if (PIDGET (ptid) == PIDGET (inferior_ptid)) |
8a3fe4f8 | 3542 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3543 | |
6c95b8df | 3544 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3545 | inferior_ptid = ptid; |
35df4500 | 3546 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3547 | { |
35df4500 | 3548 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3549 | continue; |
3550 | ||
35df4500 TJB |
3551 | if (bl->inserted) |
3552 | val |= remove_breakpoint_1 (bl, mark_inserted); | |
c5aa993b | 3553 | } |
d03285ec UW |
3554 | |
3555 | /* Detach single-step breakpoints as well. */ | |
3556 | detach_single_step_breakpoints (); | |
3557 | ||
ce696e05 | 3558 | do_cleanups (old_chain); |
3a1bae8e | 3559 | return val; |
c906108c SS |
3560 | } |
3561 | ||
35df4500 | 3562 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3563 | Note that this is used to detach breakpoints from a child fork. |
3564 | When we get here, the child isn't in the inferior list, and neither | |
3565 | do we have objects to represent its address space --- we should | |
35df4500 | 3566 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3567 | |
c906108c | 3568 | static int |
35df4500 | 3569 | remove_breakpoint_1 (struct bp_location *bl, insertion_state_t is) |
c906108c SS |
3570 | { |
3571 | int val; | |
c5aa993b | 3572 | |
35df4500 TJB |
3573 | /* BL is never in moribund_locations by our callers. */ |
3574 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3575 | |
35df4500 | 3576 | if (bl->owner->enable_state == bp_permanent) |
c2c6d25f JM |
3577 | /* Permanent breakpoints cannot be inserted or removed. */ |
3578 | return 0; | |
3579 | ||
74960c60 VP |
3580 | /* The type of none suggests that owner is actually deleted. |
3581 | This should not ever happen. */ | |
35df4500 | 3582 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3583 | |
35df4500 TJB |
3584 | if (bl->loc_type == bp_loc_software_breakpoint |
3585 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3586 | { |
c02f5703 MS |
3587 | /* "Normal" instruction breakpoint: either the standard |
3588 | trap-instruction bp (bp_breakpoint), or a | |
3589 | bp_hardware_breakpoint. */ | |
3590 | ||
3591 | /* First check to see if we have to handle an overlay. */ | |
3592 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3593 | || bl->section == NULL |
3594 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3595 | { |
3596 | /* No overlay handling: just remove the breakpoint. */ | |
348d480f | 3597 | val = bl->owner->ops->remove_location (bl); |
c02f5703 | 3598 | } |
c906108c SS |
3599 | else |
3600 | { | |
4a64f543 | 3601 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3602 | Did we set a breakpoint at the LMA? */ |
3603 | if (!overlay_events_enabled) | |
3604 | { | |
3605 | /* Yes -- overlay event support is not active, so we | |
3606 | should have set a breakpoint at the LMA. Remove it. | |
3607 | */ | |
c02f5703 MS |
3608 | /* Ignore any failures: if the LMA is in ROM, we will |
3609 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3610 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3611 | target_remove_hw_breakpoint (bl->gdbarch, | |
3612 | &bl->overlay_target_info); | |
c02f5703 | 3613 | else |
35df4500 TJB |
3614 | target_remove_breakpoint (bl->gdbarch, |
3615 | &bl->overlay_target_info); | |
c02f5703 MS |
3616 | } |
3617 | /* Did we set a breakpoint at the VMA? | |
3618 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3619 | if (bl->inserted) |
c906108c | 3620 | { |
c02f5703 MS |
3621 | /* Yes -- remove it. Previously we did not bother to |
3622 | remove the breakpoint if the section had been | |
3623 | unmapped, but let's not rely on that being safe. We | |
3624 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3625 | |
3626 | /* However, we should remove *software* breakpoints only | |
3627 | if the section is still mapped, or else we overwrite | |
3628 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3629 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3630 | || section_is_mapped (bl->section)) | |
3631 | val = bl->owner->ops->remove_location (bl); | |
aa67235e UW |
3632 | else |
3633 | val = 0; | |
c906108c | 3634 | } |
c02f5703 MS |
3635 | else |
3636 | { | |
3637 | /* No -- not inserted, so no need to remove. No error. */ | |
3638 | val = 0; | |
3639 | } | |
c906108c | 3640 | } |
879d1e6b UW |
3641 | |
3642 | /* In some cases, we might not be able to remove a breakpoint | |
3643 | in a shared library that has already been removed, but we | |
3644 | have not yet processed the shlib unload event. */ | |
35df4500 | 3645 | if (val && solib_name_from_address (bl->pspace, bl->address)) |
879d1e6b UW |
3646 | val = 0; |
3647 | ||
c906108c SS |
3648 | if (val) |
3649 | return val; | |
35df4500 | 3650 | bl->inserted = (is == mark_inserted); |
c906108c | 3651 | } |
35df4500 | 3652 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3653 | { |
77b06cd7 TJB |
3654 | gdb_assert (bl->owner->ops != NULL |
3655 | && bl->owner->ops->remove_location != NULL); | |
3656 | ||
35df4500 | 3657 | bl->inserted = (is == mark_inserted); |
77b06cd7 | 3658 | bl->owner->ops->remove_location (bl); |
2e70b7b9 | 3659 | |
c906108c | 3660 | /* Failure to remove any of the hardware watchpoints comes here. */ |
35df4500 | 3661 | if ((is == mark_uninserted) && (bl->inserted)) |
8a3fe4f8 | 3662 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3663 | bl->owner->number); |
c906108c | 3664 | } |
35df4500 TJB |
3665 | else if (bl->owner->type == bp_catchpoint |
3666 | && breakpoint_enabled (bl->owner) | |
3667 | && !bl->duplicate) | |
ce78b96d | 3668 | { |
77b06cd7 TJB |
3669 | gdb_assert (bl->owner->ops != NULL |
3670 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 3671 | |
77b06cd7 | 3672 | val = bl->owner->ops->remove_location (bl); |
ce78b96d JB |
3673 | if (val) |
3674 | return val; | |
77b06cd7 | 3675 | |
35df4500 | 3676 | bl->inserted = (is == mark_inserted); |
ce78b96d | 3677 | } |
c906108c SS |
3678 | |
3679 | return 0; | |
3680 | } | |
3681 | ||
6c95b8df | 3682 | static int |
35df4500 | 3683 | remove_breakpoint (struct bp_location *bl, insertion_state_t is) |
6c95b8df PA |
3684 | { |
3685 | int ret; | |
3686 | struct cleanup *old_chain; | |
3687 | ||
35df4500 TJB |
3688 | /* BL is never in moribund_locations by our callers. */ |
3689 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3690 | |
35df4500 | 3691 | if (bl->owner->enable_state == bp_permanent) |
6c95b8df PA |
3692 | /* Permanent breakpoints cannot be inserted or removed. */ |
3693 | return 0; | |
3694 | ||
3695 | /* The type of none suggests that owner is actually deleted. | |
3696 | This should not ever happen. */ | |
35df4500 | 3697 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df PA |
3698 | |
3699 | old_chain = save_current_space_and_thread (); | |
3700 | ||
35df4500 | 3701 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 3702 | |
35df4500 | 3703 | ret = remove_breakpoint_1 (bl, is); |
6c95b8df PA |
3704 | |
3705 | do_cleanups (old_chain); | |
3706 | return ret; | |
3707 | } | |
3708 | ||
c906108c SS |
3709 | /* Clear the "inserted" flag in all breakpoints. */ |
3710 | ||
25b22b0a | 3711 | void |
fba45db2 | 3712 | mark_breakpoints_out (void) |
c906108c | 3713 | { |
35df4500 | 3714 | struct bp_location *bl, **blp_tmp; |
c906108c | 3715 | |
35df4500 TJB |
3716 | ALL_BP_LOCATIONS (bl, blp_tmp) |
3717 | if (bl->pspace == current_program_space) | |
3718 | bl->inserted = 0; | |
c906108c SS |
3719 | } |
3720 | ||
53a5351d JM |
3721 | /* Clear the "inserted" flag in all breakpoints and delete any |
3722 | breakpoints which should go away between runs of the program. | |
c906108c SS |
3723 | |
3724 | Plus other such housekeeping that has to be done for breakpoints | |
3725 | between runs. | |
3726 | ||
53a5351d JM |
3727 | Note: this function gets called at the end of a run (by |
3728 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 3729 | init_wait_for_inferior). */ |
c906108c SS |
3730 | |
3731 | ||
3732 | ||
3733 | void | |
fba45db2 | 3734 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 3735 | { |
35df4500 TJB |
3736 | struct breakpoint *b, *b_tmp; |
3737 | struct bp_location *bl, **blp_tmp; | |
1c5cfe86 | 3738 | int ix; |
6c95b8df | 3739 | struct program_space *pspace = current_program_space; |
c906108c | 3740 | |
50c71eaf PA |
3741 | /* If breakpoint locations are shared across processes, then there's |
3742 | nothing to do. */ | |
f5656ead | 3743 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
3744 | return; |
3745 | ||
35df4500 | 3746 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 3747 | { |
35df4500 TJB |
3748 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
3749 | if (bl->pspace == pspace | |
3750 | && bl->owner->enable_state != bp_permanent) | |
3751 | bl->inserted = 0; | |
6c95b8df | 3752 | } |
075f6582 | 3753 | |
35df4500 | 3754 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3755 | { |
6c95b8df PA |
3756 | if (b->loc && b->loc->pspace != pspace) |
3757 | continue; | |
3758 | ||
c5aa993b JM |
3759 | switch (b->type) |
3760 | { | |
3761 | case bp_call_dummy: | |
e2e4d78b | 3762 | case bp_longjmp_call_dummy: |
c906108c | 3763 | |
c5aa993b | 3764 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
3765 | cause problems when the inferior is rerun, so we better get |
3766 | rid of it. */ | |
3767 | ||
3768 | case bp_watchpoint_scope: | |
3769 | ||
3770 | /* Also get rid of scope breakpoints. */ | |
3771 | ||
3772 | case bp_shlib_event: | |
3773 | ||
3774 | /* Also remove solib event breakpoints. Their addresses may | |
3775 | have changed since the last time we ran the program. | |
3776 | Actually we may now be debugging against different target; | |
3777 | and so the solib backend that installed this breakpoint may | |
3778 | not be used in by the target. E.g., | |
3779 | ||
3780 | (gdb) file prog-linux | |
3781 | (gdb) run # native linux target | |
3782 | ... | |
3783 | (gdb) kill | |
3784 | (gdb) file prog-win.exe | |
3785 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
3786 | */ | |
c906108c | 3787 | |
f59f708a PA |
3788 | case bp_step_resume: |
3789 | ||
3790 | /* Also remove step-resume breakpoints. */ | |
3791 | ||
c5aa993b JM |
3792 | delete_breakpoint (b); |
3793 | break; | |
c906108c | 3794 | |
c5aa993b JM |
3795 | case bp_watchpoint: |
3796 | case bp_hardware_watchpoint: | |
3797 | case bp_read_watchpoint: | |
3798 | case bp_access_watchpoint: | |
3a5c3e22 PA |
3799 | { |
3800 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 3801 | |
3a5c3e22 PA |
3802 | /* Likewise for watchpoints on local expressions. */ |
3803 | if (w->exp_valid_block != NULL) | |
3804 | delete_breakpoint (b); | |
3805 | else if (context == inf_starting) | |
3806 | { | |
3807 | /* Reset val field to force reread of starting value in | |
3808 | insert_breakpoints. */ | |
3809 | if (w->val) | |
3810 | value_free (w->val); | |
3811 | w->val = NULL; | |
3812 | w->val_valid = 0; | |
c860120c | 3813 | } |
3a5c3e22 | 3814 | } |
c5aa993b JM |
3815 | break; |
3816 | default: | |
c5aa993b JM |
3817 | break; |
3818 | } | |
3819 | } | |
1c5cfe86 PA |
3820 | |
3821 | /* Get rid of the moribund locations. */ | |
35df4500 TJB |
3822 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix) |
3823 | decref_bp_location (&bl); | |
1c5cfe86 | 3824 | VEC_free (bp_location_p, moribund_locations); |
c906108c SS |
3825 | } |
3826 | ||
6c95b8df PA |
3827 | /* These functions concern about actual breakpoints inserted in the |
3828 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
3829 | we need to hop over the bkpt --- so we check for address space | |
3830 | match, not program space. */ | |
3831 | ||
c2c6d25f JM |
3832 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
3833 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
3834 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
3835 | permanent breakpoint. | |
3836 | - When continuing from a location with an ordinary breakpoint, we | |
3837 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 3838 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
3839 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
3840 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 3841 | |
c2c6d25f | 3842 | enum breakpoint_here |
6c95b8df | 3843 | breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 3844 | { |
35df4500 | 3845 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 3846 | int any_breakpoint_here = 0; |
c906108c | 3847 | |
35df4500 | 3848 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 3849 | { |
35df4500 TJB |
3850 | if (bl->loc_type != bp_loc_software_breakpoint |
3851 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3852 | continue; |
3853 | ||
f1310107 | 3854 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 TJB |
3855 | if ((breakpoint_enabled (bl->owner) |
3856 | || bl->owner->enable_state == bp_permanent) | |
f1310107 | 3857 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
3858 | { |
3859 | if (overlay_debugging | |
35df4500 TJB |
3860 | && section_is_overlay (bl->section) |
3861 | && !section_is_mapped (bl->section)) | |
075f6582 | 3862 | continue; /* unmapped overlay -- can't be a match */ |
35df4500 | 3863 | else if (bl->owner->enable_state == bp_permanent) |
075f6582 DJ |
3864 | return permanent_breakpoint_here; |
3865 | else | |
3866 | any_breakpoint_here = 1; | |
3867 | } | |
3868 | } | |
c906108c | 3869 | |
c2c6d25f | 3870 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
3871 | } |
3872 | ||
1c5cfe86 PA |
3873 | /* Return true if there's a moribund breakpoint at PC. */ |
3874 | ||
3875 | int | |
6c95b8df | 3876 | moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
3877 | { |
3878 | struct bp_location *loc; | |
3879 | int ix; | |
3880 | ||
3881 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
f1310107 | 3882 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
3883 | return 1; |
3884 | ||
3885 | return 0; | |
3886 | } | |
c2c6d25f | 3887 | |
c36b740a | 3888 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
4a64f543 MS |
3889 | inserted using regular breakpoint_chain / bp_location array |
3890 | mechanism. This does not check for single-step breakpoints, which | |
3891 | are inserted and removed using direct target manipulation. */ | |
c906108c SS |
3892 | |
3893 | int | |
4a64f543 MS |
3894 | regular_breakpoint_inserted_here_p (struct address_space *aspace, |
3895 | CORE_ADDR pc) | |
c906108c | 3896 | { |
35df4500 | 3897 | struct bp_location *bl, **blp_tmp; |
c906108c | 3898 | |
35df4500 | 3899 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3900 | { |
35df4500 TJB |
3901 | if (bl->loc_type != bp_loc_software_breakpoint |
3902 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3903 | continue; |
3904 | ||
35df4500 | 3905 | if (bl->inserted |
f1310107 | 3906 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
3907 | { |
3908 | if (overlay_debugging | |
35df4500 TJB |
3909 | && section_is_overlay (bl->section) |
3910 | && !section_is_mapped (bl->section)) | |
075f6582 DJ |
3911 | continue; /* unmapped overlay -- can't be a match */ |
3912 | else | |
3913 | return 1; | |
3914 | } | |
c5aa993b | 3915 | } |
c36b740a VP |
3916 | return 0; |
3917 | } | |
3918 | ||
3919 | /* Returns non-zero iff there's either regular breakpoint | |
3920 | or a single step breakpoint inserted at PC. */ | |
3921 | ||
3922 | int | |
6c95b8df | 3923 | breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c36b740a | 3924 | { |
6c95b8df | 3925 | if (regular_breakpoint_inserted_here_p (aspace, pc)) |
c36b740a | 3926 | return 1; |
c906108c | 3927 | |
6c95b8df | 3928 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
3929 | return 1; |
3930 | ||
c906108c SS |
3931 | return 0; |
3932 | } | |
3933 | ||
4fa8626c DJ |
3934 | /* This function returns non-zero iff there is a software breakpoint |
3935 | inserted at PC. */ | |
3936 | ||
3937 | int | |
3e43a32a MS |
3938 | software_breakpoint_inserted_here_p (struct address_space *aspace, |
3939 | CORE_ADDR pc) | |
4fa8626c | 3940 | { |
35df4500 | 3941 | struct bp_location *bl, **blp_tmp; |
4fa8626c | 3942 | |
35df4500 | 3943 | ALL_BP_LOCATIONS (bl, blp_tmp) |
4fa8626c | 3944 | { |
35df4500 | 3945 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
3946 | continue; |
3947 | ||
35df4500 TJB |
3948 | if (bl->inserted |
3949 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6c95b8df | 3950 | aspace, pc)) |
4fa8626c DJ |
3951 | { |
3952 | if (overlay_debugging | |
35df4500 TJB |
3953 | && section_is_overlay (bl->section) |
3954 | && !section_is_mapped (bl->section)) | |
4fa8626c DJ |
3955 | continue; /* unmapped overlay -- can't be a match */ |
3956 | else | |
3957 | return 1; | |
3958 | } | |
3959 | } | |
3960 | ||
1aafd4da | 3961 | /* Also check for software single-step breakpoints. */ |
6c95b8df | 3962 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
3963 | return 1; |
3964 | ||
4fa8626c DJ |
3965 | return 0; |
3966 | } | |
3967 | ||
9093389c PA |
3968 | int |
3969 | hardware_watchpoint_inserted_in_range (struct address_space *aspace, | |
3970 | CORE_ADDR addr, ULONGEST len) | |
3971 | { | |
3972 | struct breakpoint *bpt; | |
3973 | ||
3974 | ALL_BREAKPOINTS (bpt) | |
3975 | { | |
3976 | struct bp_location *loc; | |
3977 | ||
3978 | if (bpt->type != bp_hardware_watchpoint | |
3979 | && bpt->type != bp_access_watchpoint) | |
3980 | continue; | |
3981 | ||
3982 | if (!breakpoint_enabled (bpt)) | |
3983 | continue; | |
3984 | ||
3985 | for (loc = bpt->loc; loc; loc = loc->next) | |
3986 | if (loc->pspace->aspace == aspace && loc->inserted) | |
3987 | { | |
3988 | CORE_ADDR l, h; | |
3989 | ||
3990 | /* Check for intersection. */ | |
3991 | l = max (loc->address, addr); | |
3992 | h = min (loc->address + loc->length, addr + len); | |
3993 | if (l < h) | |
3994 | return 1; | |
3995 | } | |
3996 | } | |
3997 | return 0; | |
3998 | } | |
3999 | ||
075f6582 DJ |
4000 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
4001 | PC is valid for process/thread PTID. */ | |
c906108c SS |
4002 | |
4003 | int | |
6c95b8df PA |
4004 | breakpoint_thread_match (struct address_space *aspace, CORE_ADDR pc, |
4005 | ptid_t ptid) | |
c906108c | 4006 | { |
35df4500 | 4007 | struct bp_location *bl, **blp_tmp; |
4a306c9a | 4008 | /* The thread and task IDs associated to PTID, computed lazily. */ |
a6f1cd96 | 4009 | int thread = -1; |
4a306c9a | 4010 | int task = 0; |
a6f1cd96 | 4011 | |
35df4500 | 4012 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 4013 | { |
35df4500 TJB |
4014 | if (bl->loc_type != bp_loc_software_breakpoint |
4015 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4016 | continue; |
4017 | ||
35df4500 TJB |
4018 | /* ALL_BP_LOCATIONS bp_location has bl->OWNER always non-NULL. */ |
4019 | if (!breakpoint_enabled (bl->owner) | |
4020 | && bl->owner->enable_state != bp_permanent) | |
a6f1cd96 JB |
4021 | continue; |
4022 | ||
f1310107 | 4023 | if (!breakpoint_location_address_match (bl, aspace, pc)) |
a6f1cd96 JB |
4024 | continue; |
4025 | ||
35df4500 | 4026 | if (bl->owner->thread != -1) |
075f6582 | 4027 | { |
a6f1cd96 JB |
4028 | /* This is a thread-specific breakpoint. Check that ptid |
4029 | matches that thread. If thread hasn't been computed yet, | |
4030 | it is now time to do so. */ | |
4031 | if (thread == -1) | |
4032 | thread = pid_to_thread_id (ptid); | |
35df4500 | 4033 | if (bl->owner->thread != thread) |
a6f1cd96 | 4034 | continue; |
075f6582 | 4035 | } |
a6f1cd96 | 4036 | |
35df4500 | 4037 | if (bl->owner->task != 0) |
4a306c9a JB |
4038 | { |
4039 | /* This is a task-specific breakpoint. Check that ptid | |
4040 | matches that task. If task hasn't been computed yet, | |
4041 | it is now time to do so. */ | |
4042 | if (task == 0) | |
4043 | task = ada_get_task_number (ptid); | |
35df4500 | 4044 | if (bl->owner->task != task) |
4a306c9a JB |
4045 | continue; |
4046 | } | |
4047 | ||
a6f1cd96 | 4048 | if (overlay_debugging |
35df4500 TJB |
4049 | && section_is_overlay (bl->section) |
4050 | && !section_is_mapped (bl->section)) | |
a6f1cd96 JB |
4051 | continue; /* unmapped overlay -- can't be a match */ |
4052 | ||
4053 | return 1; | |
c5aa993b | 4054 | } |
c906108c SS |
4055 | |
4056 | return 0; | |
4057 | } | |
c906108c | 4058 | \f |
c5aa993b | 4059 | |
c906108c SS |
4060 | /* bpstat stuff. External routines' interfaces are documented |
4061 | in breakpoint.h. */ | |
4062 | ||
4063 | int | |
c326b90e | 4064 | is_catchpoint (struct breakpoint *ep) |
c906108c | 4065 | { |
533be4dd | 4066 | return (ep->type == bp_catchpoint); |
c906108c SS |
4067 | } |
4068 | ||
f431efe5 PA |
4069 | /* Frees any storage that is part of a bpstat. Does not walk the |
4070 | 'next' chain. */ | |
4071 | ||
4072 | static void | |
198757a8 VP |
4073 | bpstat_free (bpstat bs) |
4074 | { | |
4075 | if (bs->old_val != NULL) | |
4076 | value_free (bs->old_val); | |
9add0f1b | 4077 | decref_counted_command_line (&bs->commands); |
f431efe5 | 4078 | decref_bp_location (&bs->bp_location_at); |
198757a8 VP |
4079 | xfree (bs); |
4080 | } | |
4081 | ||
c906108c SS |
4082 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4083 | Also free any storage that is part of a bpstat. */ | |
4084 | ||
4085 | void | |
fba45db2 | 4086 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4087 | { |
4088 | bpstat p; | |
4089 | bpstat q; | |
4090 | ||
4091 | if (bsp == 0) | |
4092 | return; | |
4093 | p = *bsp; | |
4094 | while (p != NULL) | |
4095 | { | |
4096 | q = p->next; | |
198757a8 | 4097 | bpstat_free (p); |
c906108c SS |
4098 | p = q; |
4099 | } | |
4100 | *bsp = NULL; | |
4101 | } | |
4102 | ||
4103 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
4104 | is part of the bpstat is copied as well. */ | |
4105 | ||
4106 | bpstat | |
fba45db2 | 4107 | bpstat_copy (bpstat bs) |
c906108c SS |
4108 | { |
4109 | bpstat p = NULL; | |
4110 | bpstat tmp; | |
4111 | bpstat retval = NULL; | |
4112 | ||
4113 | if (bs == NULL) | |
4114 | return bs; | |
4115 | ||
4116 | for (; bs != NULL; bs = bs->next) | |
4117 | { | |
4118 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
4119 | memcpy (tmp, bs, sizeof (*tmp)); | |
9add0f1b | 4120 | incref_counted_command_line (tmp->commands); |
f431efe5 | 4121 | incref_bp_location (tmp->bp_location_at); |
31cc81e9 | 4122 | if (bs->old_val != NULL) |
3c3185ac JK |
4123 | { |
4124 | tmp->old_val = value_copy (bs->old_val); | |
4125 | release_value (tmp->old_val); | |
4126 | } | |
31cc81e9 | 4127 | |
c906108c SS |
4128 | if (p == NULL) |
4129 | /* This is the first thing in the chain. */ | |
4130 | retval = tmp; | |
4131 | else | |
4132 | p->next = tmp; | |
4133 | p = tmp; | |
4134 | } | |
4135 | p->next = NULL; | |
4136 | return retval; | |
4137 | } | |
4138 | ||
4a64f543 | 4139 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4140 | |
4141 | bpstat | |
fba45db2 | 4142 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4143 | { |
c5aa993b JM |
4144 | if (bsp == NULL) |
4145 | return NULL; | |
c906108c | 4146 | |
c5aa993b JM |
4147 | for (; bsp != NULL; bsp = bsp->next) |
4148 | { | |
f431efe5 | 4149 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4150 | return bsp; |
4151 | } | |
c906108c SS |
4152 | return NULL; |
4153 | } | |
4154 | ||
4a64f543 MS |
4155 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4156 | stopped at. *BSP upon return is a bpstat which points to the | |
4157 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4158 | good for anything but further calls to bpstat_num). | |
4159 | ||
8671a17b PA |
4160 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4161 | Return -1 if stopped at a breakpoint that has been deleted since | |
4162 | we set it. | |
4163 | Return 1 otherwise. */ | |
c906108c SS |
4164 | |
4165 | int | |
8671a17b | 4166 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4167 | { |
4168 | struct breakpoint *b; | |
4169 | ||
4170 | if ((*bsp) == NULL) | |
4171 | return 0; /* No more breakpoint values */ | |
8671a17b | 4172 | |
4a64f543 MS |
4173 | /* We assume we'll never have several bpstats that correspond to a |
4174 | single breakpoint -- otherwise, this function might return the | |
4175 | same number more than once and this will look ugly. */ | |
f431efe5 | 4176 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4177 | *bsp = (*bsp)->next; |
4178 | if (b == NULL) | |
4179 | return -1; /* breakpoint that's been deleted since */ | |
4180 | ||
4181 | *num = b->number; /* We have its number */ | |
4182 | return 1; | |
c906108c SS |
4183 | } |
4184 | ||
e93ca019 | 4185 | /* See breakpoint.h. */ |
c906108c SS |
4186 | |
4187 | void | |
e93ca019 | 4188 | bpstat_clear_actions (void) |
c906108c | 4189 | { |
e93ca019 JK |
4190 | struct thread_info *tp; |
4191 | bpstat bs; | |
4192 | ||
4193 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4194 | return; | |
4195 | ||
4196 | tp = find_thread_ptid (inferior_ptid); | |
4197 | if (tp == NULL) | |
4198 | return; | |
4199 | ||
4200 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) | |
c906108c | 4201 | { |
9add0f1b | 4202 | decref_counted_command_line (&bs->commands); |
abf85f46 | 4203 | |
c906108c SS |
4204 | if (bs->old_val != NULL) |
4205 | { | |
4206 | value_free (bs->old_val); | |
4207 | bs->old_val = NULL; | |
4208 | } | |
4209 | } | |
4210 | } | |
4211 | ||
f3b1572e PA |
4212 | /* Called when a command is about to proceed the inferior. */ |
4213 | ||
4214 | static void | |
4215 | breakpoint_about_to_proceed (void) | |
4216 | { | |
4217 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
4218 | { | |
4219 | struct thread_info *tp = inferior_thread (); | |
4220 | ||
4221 | /* Allow inferior function calls in breakpoint commands to not | |
4222 | interrupt the command list. When the call finishes | |
4223 | successfully, the inferior will be standing at the same | |
4224 | breakpoint as if nothing happened. */ | |
16c381f0 | 4225 | if (tp->control.in_infcall) |
f3b1572e PA |
4226 | return; |
4227 | } | |
4228 | ||
4229 | breakpoint_proceeded = 1; | |
4230 | } | |
4231 | ||
4a64f543 MS |
4232 | /* Stub for cleaning up our state if we error-out of a breakpoint |
4233 | command. */ | |
c906108c | 4234 | static void |
4efb68b1 | 4235 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
4236 | { |
4237 | executing_breakpoint_commands = 0; | |
4238 | } | |
4239 | ||
abf85f46 JK |
4240 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4241 | or its equivalent. */ | |
4242 | ||
4243 | static int | |
4244 | command_line_is_silent (struct command_line *cmd) | |
4245 | { | |
4246 | return cmd && (strcmp ("silent", cmd->line) == 0 | |
4247 | || (xdb_commands && strcmp ("Q", cmd->line) == 0)); | |
4248 | } | |
4249 | ||
4a64f543 MS |
4250 | /* Execute all the commands associated with all the breakpoints at |
4251 | this location. Any of these commands could cause the process to | |
4252 | proceed beyond this point, etc. We look out for such changes by | |
4253 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4254 | |
347bddb7 PA |
4255 | Returns true if a breakpoint command resumed the inferior. In that |
4256 | case, it is the caller's responsibility to recall it again with the | |
4257 | bpstat of the current thread. */ | |
4258 | ||
4259 | static int | |
4260 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4261 | { |
4262 | bpstat bs; | |
4263 | struct cleanup *old_chain; | |
347bddb7 | 4264 | int again = 0; |
c906108c SS |
4265 | |
4266 | /* Avoid endless recursion if a `source' command is contained | |
4267 | in bs->commands. */ | |
4268 | if (executing_breakpoint_commands) | |
347bddb7 | 4269 | return 0; |
c906108c SS |
4270 | |
4271 | executing_breakpoint_commands = 1; | |
4272 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
4273 | ||
cf6c5ffb TT |
4274 | prevent_dont_repeat (); |
4275 | ||
4a64f543 | 4276 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4277 | bs = *bsp; |
4278 | ||
4279 | breakpoint_proceeded = 0; | |
4280 | for (; bs != NULL; bs = bs->next) | |
4281 | { | |
9add0f1b | 4282 | struct counted_command_line *ccmd; |
6c50ab1c JB |
4283 | struct command_line *cmd; |
4284 | struct cleanup *this_cmd_tree_chain; | |
4285 | ||
4286 | /* Take ownership of the BSP's command tree, if it has one. | |
4287 | ||
4288 | The command tree could legitimately contain commands like | |
4289 | 'step' and 'next', which call clear_proceed_status, which | |
4290 | frees stop_bpstat's command tree. To make sure this doesn't | |
4291 | free the tree we're executing out from under us, we need to | |
4292 | take ownership of the tree ourselves. Since a given bpstat's | |
4293 | commands are only executed once, we don't need to copy it; we | |
4294 | can clear the pointer in the bpstat, and make sure we free | |
4295 | the tree when we're done. */ | |
9add0f1b TT |
4296 | ccmd = bs->commands; |
4297 | bs->commands = NULL; | |
abf85f46 JK |
4298 | this_cmd_tree_chain = make_cleanup_decref_counted_command_line (&ccmd); |
4299 | cmd = ccmd ? ccmd->commands : NULL; | |
4300 | if (command_line_is_silent (cmd)) | |
4301 | { | |
4302 | /* The action has been already done by bpstat_stop_status. */ | |
4303 | cmd = cmd->next; | |
4304 | } | |
6c50ab1c | 4305 | |
c906108c SS |
4306 | while (cmd != NULL) |
4307 | { | |
4308 | execute_control_command (cmd); | |
4309 | ||
4310 | if (breakpoint_proceeded) | |
4311 | break; | |
4312 | else | |
4313 | cmd = cmd->next; | |
4314 | } | |
6c50ab1c JB |
4315 | |
4316 | /* We can free this command tree now. */ | |
4317 | do_cleanups (this_cmd_tree_chain); | |
4318 | ||
c906108c | 4319 | if (breakpoint_proceeded) |
32c1e744 VP |
4320 | { |
4321 | if (target_can_async_p ()) | |
347bddb7 PA |
4322 | /* If we are in async mode, then the target might be still |
4323 | running, not stopped at any breakpoint, so nothing for | |
4324 | us to do here -- just return to the event loop. */ | |
4325 | ; | |
32c1e744 VP |
4326 | else |
4327 | /* In sync mode, when execute_control_command returns | |
4328 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4329 | Breakpoint commands for that stop were not run, since |
4330 | execute_command does not run breakpoint commands -- | |
4331 | only command_line_handler does, but that one is not | |
4332 | involved in execution of breakpoint commands. So, we | |
4333 | can now execute breakpoint commands. It should be | |
4334 | noted that making execute_command do bpstat actions is | |
4335 | not an option -- in this case we'll have recursive | |
4336 | invocation of bpstat for each breakpoint with a | |
4337 | command, and can easily blow up GDB stack. Instead, we | |
4338 | return true, which will trigger the caller to recall us | |
4339 | with the new stop_bpstat. */ | |
4340 | again = 1; | |
4341 | break; | |
32c1e744 | 4342 | } |
c906108c | 4343 | } |
c2b8ed2c | 4344 | do_cleanups (old_chain); |
347bddb7 PA |
4345 | return again; |
4346 | } | |
4347 | ||
4348 | void | |
4349 | bpstat_do_actions (void) | |
4350 | { | |
353d1d73 JK |
4351 | struct cleanup *cleanup_if_error = make_bpstat_clear_actions_cleanup (); |
4352 | ||
347bddb7 PA |
4353 | /* Do any commands attached to breakpoint we are stopped at. */ |
4354 | while (!ptid_equal (inferior_ptid, null_ptid) | |
4355 | && target_has_execution | |
4356 | && !is_exited (inferior_ptid) | |
4357 | && !is_executing (inferior_ptid)) | |
4358 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
4359 | and only return when it is stopped at the next breakpoint, we | |
4360 | keep doing breakpoint actions until it returns false to | |
4361 | indicate the inferior was not resumed. */ | |
16c381f0 | 4362 | if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) |
347bddb7 | 4363 | break; |
353d1d73 JK |
4364 | |
4365 | discard_cleanups (cleanup_if_error); | |
c906108c SS |
4366 | } |
4367 | ||
fa4727a6 DJ |
4368 | /* Print out the (old or new) value associated with a watchpoint. */ |
4369 | ||
4370 | static void | |
4371 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4372 | { | |
4373 | if (val == NULL) | |
4374 | fprintf_unfiltered (stream, _("<unreadable>")); | |
4375 | else | |
79a45b7d TT |
4376 | { |
4377 | struct value_print_options opts; | |
4378 | get_user_print_options (&opts); | |
4379 | value_print (val, stream, &opts); | |
4380 | } | |
fa4727a6 DJ |
4381 | } |
4382 | ||
e514a9d6 | 4383 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4384 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4385 | 'print_it' in the bpstat structure. Under some circumstances we |
4386 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4387 | normal_stop(). */ |
e514a9d6 JM |
4388 | |
4389 | static enum print_stop_action | |
4390 | print_bp_stop_message (bpstat bs) | |
4391 | { | |
4392 | switch (bs->print_it) | |
4393 | { | |
4394 | case print_it_noop: | |
4a64f543 | 4395 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4396 | return PRINT_UNKNOWN; |
4397 | break; | |
4398 | ||
4399 | case print_it_done: | |
4400 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 4401 | relevant messages. */ |
e514a9d6 JM |
4402 | return PRINT_SRC_AND_LOC; |
4403 | break; | |
4404 | ||
4405 | case print_it_normal: | |
4f8d1dc6 | 4406 | { |
f431efe5 PA |
4407 | struct breakpoint *b = bs->breakpoint_at; |
4408 | ||
1a6a67de TJB |
4409 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4410 | which has since been deleted. */ | |
4411 | if (b == NULL) | |
4412 | return PRINT_UNKNOWN; | |
4413 | ||
348d480f PA |
4414 | /* Normal case. Call the breakpoint's print_it method. */ |
4415 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4416 | } |
348d480f | 4417 | break; |
3086aeae | 4418 | |
e514a9d6 | 4419 | default: |
8e65ff28 | 4420 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4421 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4422 | break; |
c906108c | 4423 | } |
c906108c SS |
4424 | } |
4425 | ||
edcc5120 TT |
4426 | /* A helper function that prints a shared library stopped event. */ |
4427 | ||
4428 | static void | |
4429 | print_solib_event (int is_catchpoint) | |
4430 | { | |
4431 | int any_deleted | |
4432 | = !VEC_empty (char_ptr, current_program_space->deleted_solibs); | |
4433 | int any_added | |
4434 | = !VEC_empty (so_list_ptr, current_program_space->added_solibs); | |
4435 | ||
4436 | if (!is_catchpoint) | |
4437 | { | |
4438 | if (any_added || any_deleted) | |
4439 | ui_out_text (current_uiout, | |
4440 | _("Stopped due to shared library event:\n")); | |
4441 | else | |
4442 | ui_out_text (current_uiout, | |
4443 | _("Stopped due to shared library event (no " | |
4444 | "libraries added or removed)\n")); | |
4445 | } | |
4446 | ||
4447 | if (ui_out_is_mi_like_p (current_uiout)) | |
4448 | ui_out_field_string (current_uiout, "reason", | |
4449 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
4450 | ||
4451 | if (any_deleted) | |
4452 | { | |
4453 | struct cleanup *cleanup; | |
4454 | char *name; | |
4455 | int ix; | |
4456 | ||
4457 | ui_out_text (current_uiout, _(" Inferior unloaded ")); | |
4458 | cleanup = make_cleanup_ui_out_list_begin_end (current_uiout, | |
4459 | "removed"); | |
4460 | for (ix = 0; | |
4461 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
4462 | ix, name); | |
4463 | ++ix) | |
4464 | { | |
4465 | if (ix > 0) | |
4466 | ui_out_text (current_uiout, " "); | |
4467 | ui_out_field_string (current_uiout, "library", name); | |
4468 | ui_out_text (current_uiout, "\n"); | |
4469 | } | |
4470 | ||
4471 | do_cleanups (cleanup); | |
4472 | } | |
4473 | ||
4474 | if (any_added) | |
4475 | { | |
4476 | struct so_list *iter; | |
4477 | int ix; | |
4478 | struct cleanup *cleanup; | |
4479 | ||
4480 | ui_out_text (current_uiout, _(" Inferior loaded ")); | |
4481 | cleanup = make_cleanup_ui_out_list_begin_end (current_uiout, | |
4482 | "added"); | |
4483 | for (ix = 0; | |
4484 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
4485 | ix, iter); | |
4486 | ++ix) | |
4487 | { | |
4488 | if (ix > 0) | |
4489 | ui_out_text (current_uiout, " "); | |
4490 | ui_out_field_string (current_uiout, "library", iter->so_name); | |
4491 | ui_out_text (current_uiout, "\n"); | |
4492 | } | |
4493 | ||
4494 | do_cleanups (cleanup); | |
4495 | } | |
4496 | } | |
4497 | ||
e514a9d6 JM |
4498 | /* Print a message indicating what happened. This is called from |
4499 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4500 | list - a list of the eventpoints that caused this stop. KIND is |
4501 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4502 | routine calls the generic print routine for printing a message |
4503 | about reasons for stopping. This will print (for example) the | |
4504 | "Breakpoint n," part of the output. The return value of this | |
4505 | routine is one of: | |
c906108c | 4506 | |
4a64f543 | 4507 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4508 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4509 | code to print the location. An example is |
c5aa993b JM |
4510 | "Breakpoint 1, " which should be followed by |
4511 | the location. | |
917317f4 | 4512 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4513 | to also print the location part of the message. |
4514 | An example is the catch/throw messages, which | |
4a64f543 | 4515 | don't require a location appended to the end. |
917317f4 | 4516 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4517 | further info to be printed. */ |
c906108c | 4518 | |
917317f4 | 4519 | enum print_stop_action |
36dfb11c | 4520 | bpstat_print (bpstat bs, int kind) |
c906108c SS |
4521 | { |
4522 | int val; | |
c5aa993b | 4523 | |
c906108c | 4524 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4525 | (Currently all watchpoints go on the bpstat whether hit or not. |
4526 | That probably could (should) be changed, provided care is taken | |
c906108c | 4527 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4528 | for (; bs; bs = bs->next) |
4529 | { | |
4530 | val = print_bp_stop_message (bs); | |
4531 | if (val == PRINT_SRC_ONLY | |
4532 | || val == PRINT_SRC_AND_LOC | |
4533 | || val == PRINT_NOTHING) | |
4534 | return val; | |
4535 | } | |
c906108c | 4536 | |
36dfb11c TT |
4537 | /* If we had hit a shared library event breakpoint, |
4538 | print_bp_stop_message would print out this message. If we hit an | |
4539 | OS-level shared library event, do the same thing. */ | |
4540 | if (kind == TARGET_WAITKIND_LOADED) | |
4541 | { | |
edcc5120 | 4542 | print_solib_event (0); |
36dfb11c TT |
4543 | return PRINT_NOTHING; |
4544 | } | |
4545 | ||
e514a9d6 | 4546 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4547 | with and nothing was printed. */ |
917317f4 | 4548 | return PRINT_UNKNOWN; |
c906108c SS |
4549 | } |
4550 | ||
4a64f543 MS |
4551 | /* Evaluate the expression EXP and return 1 if value is zero. This is |
4552 | used inside a catch_errors to evaluate the breakpoint condition. | |
4553 | The argument is a "struct expression *" that has been cast to a | |
4554 | "char *" to make it pass through catch_errors. */ | |
c906108c SS |
4555 | |
4556 | static int | |
4efb68b1 | 4557 | breakpoint_cond_eval (void *exp) |
c906108c | 4558 | { |
278cd55f | 4559 | struct value *mark = value_mark (); |
c5aa993b | 4560 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
cc59ec59 | 4561 | |
c906108c SS |
4562 | value_free_to_mark (mark); |
4563 | return i; | |
4564 | } | |
4565 | ||
5760d0ab | 4566 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c SS |
4567 | |
4568 | static bpstat | |
5760d0ab | 4569 | bpstat_alloc (struct bp_location *bl, bpstat **bs_link_pointer) |
c906108c SS |
4570 | { |
4571 | bpstat bs; | |
4572 | ||
4573 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
5760d0ab JK |
4574 | bs->next = NULL; |
4575 | **bs_link_pointer = bs; | |
4576 | *bs_link_pointer = &bs->next; | |
f431efe5 PA |
4577 | bs->breakpoint_at = bl->owner; |
4578 | bs->bp_location_at = bl; | |
4579 | incref_bp_location (bl); | |
c906108c SS |
4580 | /* If the condition is false, etc., don't do the commands. */ |
4581 | bs->commands = NULL; | |
4582 | bs->old_val = NULL; | |
4583 | bs->print_it = print_it_normal; | |
4584 | return bs; | |
4585 | } | |
4586 | \f | |
d983da9c DJ |
4587 | /* The target has stopped with waitstatus WS. Check if any hardware |
4588 | watchpoints have triggered, according to the target. */ | |
4589 | ||
4590 | int | |
4591 | watchpoints_triggered (struct target_waitstatus *ws) | |
4592 | { | |
d92524f1 | 4593 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
4594 | CORE_ADDR addr; |
4595 | struct breakpoint *b; | |
4596 | ||
4597 | if (!stopped_by_watchpoint) | |
4598 | { | |
4599 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4600 | as not triggered. */ | |
4601 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4602 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4603 | { |
4604 | struct watchpoint *w = (struct watchpoint *) b; | |
4605 | ||
4606 | w->watchpoint_triggered = watch_triggered_no; | |
4607 | } | |
d983da9c DJ |
4608 | |
4609 | return 0; | |
4610 | } | |
4611 | ||
4612 | if (!target_stopped_data_address (¤t_target, &addr)) | |
4613 | { | |
4614 | /* We were stopped by a watchpoint, but we don't know where. | |
4615 | Mark all watchpoints as unknown. */ | |
4616 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4617 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4618 | { |
4619 | struct watchpoint *w = (struct watchpoint *) b; | |
4620 | ||
4621 | w->watchpoint_triggered = watch_triggered_unknown; | |
4622 | } | |
d983da9c DJ |
4623 | |
4624 | return stopped_by_watchpoint; | |
4625 | } | |
4626 | ||
4627 | /* The target could report the data address. Mark watchpoints | |
4628 | affected by this data address as triggered, and all others as not | |
4629 | triggered. */ | |
4630 | ||
4631 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4632 | if (is_hardware_watchpoint (b)) |
d983da9c | 4633 | { |
3a5c3e22 | 4634 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 4635 | struct bp_location *loc; |
d983da9c | 4636 | |
3a5c3e22 | 4637 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 4638 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 4639 | { |
3a5c3e22 | 4640 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4641 | { |
3a5c3e22 PA |
4642 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4643 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4644 | |
4645 | if (newaddr == start) | |
4646 | { | |
3a5c3e22 | 4647 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4648 | break; |
4649 | } | |
4650 | } | |
4651 | /* Exact match not required. Within range is sufficient. */ | |
4652 | else if (target_watchpoint_addr_within_range (¤t_target, | |
4653 | addr, loc->address, | |
4654 | loc->length)) | |
4655 | { | |
3a5c3e22 | 4656 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4657 | break; |
4658 | } | |
4659 | } | |
d983da9c DJ |
4660 | } |
4661 | ||
4662 | return 1; | |
4663 | } | |
4664 | ||
c906108c SS |
4665 | /* Possible return values for watchpoint_check (this can't be an enum |
4666 | because of check_errors). */ | |
4667 | /* The watchpoint has been deleted. */ | |
4668 | #define WP_DELETED 1 | |
4669 | /* The value has changed. */ | |
4670 | #define WP_VALUE_CHANGED 2 | |
4671 | /* The value has not changed. */ | |
4672 | #define WP_VALUE_NOT_CHANGED 3 | |
60e1c644 PA |
4673 | /* Ignore this watchpoint, no matter if the value changed or not. */ |
4674 | #define WP_IGNORE 4 | |
c906108c SS |
4675 | |
4676 | #define BP_TEMPFLAG 1 | |
4677 | #define BP_HARDWAREFLAG 2 | |
4678 | ||
4a64f543 MS |
4679 | /* Evaluate watchpoint condition expression and check if its value |
4680 | changed. | |
553e4c11 JB |
4681 | |
4682 | P should be a pointer to struct bpstat, but is defined as a void * | |
4683 | in order for this function to be usable with catch_errors. */ | |
c906108c SS |
4684 | |
4685 | static int | |
4efb68b1 | 4686 | watchpoint_check (void *p) |
c906108c SS |
4687 | { |
4688 | bpstat bs = (bpstat) p; | |
3a5c3e22 | 4689 | struct watchpoint *b; |
c906108c SS |
4690 | struct frame_info *fr; |
4691 | int within_current_scope; | |
4692 | ||
f431efe5 | 4693 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4694 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4695 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4696 | |
f6bc2008 PA |
4697 | /* If this is a local watchpoint, we only want to check if the |
4698 | watchpoint frame is in scope if the current thread is the thread | |
4699 | that was used to create the watchpoint. */ | |
4700 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4701 | return WP_IGNORE; |
f6bc2008 | 4702 | |
c906108c SS |
4703 | if (b->exp_valid_block == NULL) |
4704 | within_current_scope = 1; | |
4705 | else | |
4706 | { | |
edb3359d DJ |
4707 | struct frame_info *frame = get_current_frame (); |
4708 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4709 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4710 | ||
4a64f543 MS |
4711 | /* in_function_epilogue_p() returns a non-zero value if we're |
4712 | still in the function but the stack frame has already been | |
4713 | invalidated. Since we can't rely on the values of local | |
4714 | variables after the stack has been destroyed, we are treating | |
4715 | the watchpoint in that state as `not changed' without further | |
4716 | checking. Don't mark watchpoints as changed if the current | |
4717 | frame is in an epilogue - even if they are in some other | |
4718 | frame, our view of the stack is likely to be wrong and | |
4719 | frame_find_by_id could error out. */ | |
a0f49112 | 4720 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) |
60e1c644 | 4721 | return WP_IGNORE; |
a0f49112 | 4722 | |
101dcfbe | 4723 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 4724 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
4725 | |
4726 | /* If we've gotten confused in the unwinder, we might have | |
4727 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
4728 | if (within_current_scope) |
4729 | { | |
4730 | struct symbol *function; | |
4731 | ||
4732 | function = get_frame_function (fr); | |
4733 | if (function == NULL | |
4734 | || !contained_in (b->exp_valid_block, | |
4735 | SYMBOL_BLOCK_VALUE (function))) | |
4736 | within_current_scope = 0; | |
4737 | } | |
69fbadd5 | 4738 | |
edb3359d | 4739 | if (within_current_scope) |
c906108c SS |
4740 | /* If we end up stopping, the current frame will get selected |
4741 | in normal_stop. So this call to select_frame won't affect | |
4742 | the user. */ | |
0f7d239c | 4743 | select_frame (fr); |
c906108c | 4744 | } |
c5aa993b | 4745 | |
c906108c SS |
4746 | if (within_current_scope) |
4747 | { | |
4a64f543 MS |
4748 | /* We use value_{,free_to_}mark because it could be a *long* |
4749 | time before we return to the command level and call | |
4750 | free_all_values. We can't call free_all_values because we | |
4751 | might be in the middle of evaluating a function call. */ | |
c906108c | 4752 | |
0cf6dd15 | 4753 | int pc = 0; |
9c06b0b4 | 4754 | struct value *mark; |
fa4727a6 DJ |
4755 | struct value *new_val; |
4756 | ||
3a5c3e22 | 4757 | if (is_masked_watchpoint (&b->base)) |
9c06b0b4 TJB |
4758 | /* Since we don't know the exact trigger address (from |
4759 | stopped_data_address), just tell the user we've triggered | |
4760 | a mask watchpoint. */ | |
4761 | return WP_VALUE_CHANGED; | |
4762 | ||
4763 | mark = value_mark (); | |
0cf6dd15 | 4764 | fetch_subexp_value (b->exp, &pc, &new_val, NULL, NULL); |
218d2fc6 | 4765 | |
4a64f543 MS |
4766 | /* We use value_equal_contents instead of value_equal because |
4767 | the latter coerces an array to a pointer, thus comparing just | |
4768 | the address of the array instead of its contents. This is | |
4769 | not what we want. */ | |
fa4727a6 | 4770 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 4771 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 4772 | { |
fa4727a6 DJ |
4773 | if (new_val != NULL) |
4774 | { | |
4775 | release_value (new_val); | |
4776 | value_free_to_mark (mark); | |
4777 | } | |
c906108c SS |
4778 | bs->old_val = b->val; |
4779 | b->val = new_val; | |
fa4727a6 | 4780 | b->val_valid = 1; |
c906108c SS |
4781 | return WP_VALUE_CHANGED; |
4782 | } | |
4783 | else | |
4784 | { | |
60e1c644 | 4785 | /* Nothing changed. */ |
c906108c | 4786 | value_free_to_mark (mark); |
c906108c SS |
4787 | return WP_VALUE_NOT_CHANGED; |
4788 | } | |
4789 | } | |
4790 | else | |
4791 | { | |
79a45e25 PA |
4792 | struct ui_out *uiout = current_uiout; |
4793 | ||
c906108c | 4794 | /* This seems like the only logical thing to do because |
c5aa993b JM |
4795 | if we temporarily ignored the watchpoint, then when |
4796 | we reenter the block in which it is valid it contains | |
4797 | garbage (in the case of a function, it may have two | |
4798 | garbage values, one before and one after the prologue). | |
4799 | So we can't even detect the first assignment to it and | |
4800 | watch after that (since the garbage may or may not equal | |
4801 | the first value assigned). */ | |
348d480f PA |
4802 | /* We print all the stop information in |
4803 | breakpoint_ops->print_it, but in this case, by the time we | |
4804 | call breakpoint_ops->print_it this bp will be deleted | |
4805 | already. So we have no choice but print the information | |
4806 | here. */ | |
9dc5e2a9 | 4807 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
4808 | ui_out_field_string |
4809 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 4810 | ui_out_text (uiout, "\nWatchpoint "); |
3a5c3e22 | 4811 | ui_out_field_int (uiout, "wpnum", b->base.number); |
3e43a32a MS |
4812 | ui_out_text (uiout, |
4813 | " deleted because the program has left the block in\n\ | |
8b93c638 | 4814 | which its expression is valid.\n"); |
4ce44c66 | 4815 | |
cdac0397 | 4816 | /* Make sure the watchpoint's commands aren't executed. */ |
3a5c3e22 | 4817 | decref_counted_command_line (&b->base.commands); |
d0fb5eae | 4818 | watchpoint_del_at_next_stop (b); |
c906108c SS |
4819 | |
4820 | return WP_DELETED; | |
4821 | } | |
4822 | } | |
4823 | ||
18a18393 | 4824 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
4825 | breakpoint location BL. This function does not check if we should |
4826 | stop, only if BL explains the stop. */ | |
4827 | ||
18a18393 | 4828 | static int |
6c95b8df | 4829 | bpstat_check_location (const struct bp_location *bl, |
09ac7c10 TT |
4830 | struct address_space *aspace, CORE_ADDR bp_addr, |
4831 | const struct target_waitstatus *ws) | |
18a18393 VP |
4832 | { |
4833 | struct breakpoint *b = bl->owner; | |
4834 | ||
348d480f | 4835 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
4836 | gdb_assert (b != NULL); |
4837 | ||
09ac7c10 | 4838 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
4839 | } |
4840 | ||
3a5c3e22 PA |
4841 | /* Determine if the watched values have actually changed, and we |
4842 | should stop. If not, set BS->stop to 0. */ | |
4843 | ||
18a18393 VP |
4844 | static void |
4845 | bpstat_check_watchpoint (bpstat bs) | |
4846 | { | |
2bdf28a0 | 4847 | const struct bp_location *bl; |
3a5c3e22 | 4848 | struct watchpoint *b; |
2bdf28a0 JK |
4849 | |
4850 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 4851 | bl = bs->bp_location_at; |
2bdf28a0 | 4852 | gdb_assert (bl != NULL); |
3a5c3e22 | 4853 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 4854 | gdb_assert (b != NULL); |
18a18393 | 4855 | |
18a18393 | 4856 | { |
18a18393 VP |
4857 | int must_check_value = 0; |
4858 | ||
3a5c3e22 | 4859 | if (b->base.type == bp_watchpoint) |
18a18393 VP |
4860 | /* For a software watchpoint, we must always check the |
4861 | watched value. */ | |
4862 | must_check_value = 1; | |
4863 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
4864 | /* We have a hardware watchpoint (read, write, or access) | |
4865 | and the target earlier reported an address watched by | |
4866 | this watchpoint. */ | |
4867 | must_check_value = 1; | |
4868 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
3a5c3e22 | 4869 | && b->base.type == bp_hardware_watchpoint) |
18a18393 VP |
4870 | /* We were stopped by a hardware watchpoint, but the target could |
4871 | not report the data address. We must check the watchpoint's | |
4872 | value. Access and read watchpoints are out of luck; without | |
4873 | a data address, we can't figure it out. */ | |
4874 | must_check_value = 1; | |
3a5c3e22 | 4875 | |
18a18393 VP |
4876 | if (must_check_value) |
4877 | { | |
3e43a32a MS |
4878 | char *message |
4879 | = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
3a5c3e22 | 4880 | b->base.number); |
18a18393 VP |
4881 | struct cleanup *cleanups = make_cleanup (xfree, message); |
4882 | int e = catch_errors (watchpoint_check, bs, message, | |
4883 | RETURN_MASK_ALL); | |
4884 | do_cleanups (cleanups); | |
4885 | switch (e) | |
4886 | { | |
4887 | case WP_DELETED: | |
4888 | /* We've already printed what needs to be printed. */ | |
4889 | bs->print_it = print_it_done; | |
4890 | /* Stop. */ | |
4891 | break; | |
60e1c644 PA |
4892 | case WP_IGNORE: |
4893 | bs->print_it = print_it_noop; | |
4894 | bs->stop = 0; | |
4895 | break; | |
18a18393 | 4896 | case WP_VALUE_CHANGED: |
3a5c3e22 | 4897 | if (b->base.type == bp_read_watchpoint) |
18a18393 | 4898 | { |
85d721b8 PA |
4899 | /* There are two cases to consider here: |
4900 | ||
4a64f543 | 4901 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
4902 | In that case, trust the target, and always report |
4903 | the watchpoint hit to the user. Even though | |
4904 | reads don't cause value changes, the value may | |
4905 | have changed since the last time it was read, and | |
4906 | since we're not trapping writes, we will not see | |
4907 | those, and as such we should ignore our notion of | |
4908 | old value. | |
4909 | ||
4a64f543 | 4910 | 2. We're watching the triggered memory for both |
85d721b8 PA |
4911 | reads and writes. There are two ways this may |
4912 | happen: | |
4913 | ||
4a64f543 | 4914 | 2.1. This is a target that can't break on data |
85d721b8 PA |
4915 | reads only, but can break on accesses (reads or |
4916 | writes), such as e.g., x86. We detect this case | |
4917 | at the time we try to insert read watchpoints. | |
4918 | ||
4a64f543 | 4919 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
4920 | watchpoints, but, the user set an access or write |
4921 | watchpoint watching the same memory as this read | |
4922 | watchpoint. | |
4923 | ||
4924 | If we're watching memory writes as well as reads, | |
4925 | ignore watchpoint hits when we find that the | |
4926 | value hasn't changed, as reads don't cause | |
4927 | changes. This still gives false positives when | |
4928 | the program writes the same value to memory as | |
4929 | what there was already in memory (we will confuse | |
4930 | it for a read), but it's much better than | |
4931 | nothing. */ | |
4932 | ||
4933 | int other_write_watchpoint = 0; | |
4934 | ||
4935 | if (bl->watchpoint_type == hw_read) | |
4936 | { | |
4937 | struct breakpoint *other_b; | |
4938 | ||
4939 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
4940 | if (other_b->type == bp_hardware_watchpoint |
4941 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 4942 | { |
3a5c3e22 PA |
4943 | struct watchpoint *other_w = |
4944 | (struct watchpoint *) other_b; | |
4945 | ||
4946 | if (other_w->watchpoint_triggered | |
4947 | == watch_triggered_yes) | |
4948 | { | |
4949 | other_write_watchpoint = 1; | |
4950 | break; | |
4951 | } | |
85d721b8 PA |
4952 | } |
4953 | } | |
4954 | ||
4955 | if (other_write_watchpoint | |
4956 | || bl->watchpoint_type == hw_access) | |
4957 | { | |
4958 | /* We're watching the same memory for writes, | |
4959 | and the value changed since the last time we | |
4960 | updated it, so this trap must be for a write. | |
4961 | Ignore it. */ | |
4962 | bs->print_it = print_it_noop; | |
4963 | bs->stop = 0; | |
4964 | } | |
18a18393 VP |
4965 | } |
4966 | break; | |
4967 | case WP_VALUE_NOT_CHANGED: | |
3a5c3e22 PA |
4968 | if (b->base.type == bp_hardware_watchpoint |
4969 | || b->base.type == bp_watchpoint) | |
18a18393 VP |
4970 | { |
4971 | /* Don't stop: write watchpoints shouldn't fire if | |
4972 | the value hasn't changed. */ | |
4973 | bs->print_it = print_it_noop; | |
4974 | bs->stop = 0; | |
4975 | } | |
4976 | /* Stop. */ | |
4977 | break; | |
4978 | default: | |
4979 | /* Can't happen. */ | |
4980 | case 0: | |
4981 | /* Error from catch_errors. */ | |
3a5c3e22 | 4982 | printf_filtered (_("Watchpoint %d deleted.\n"), b->base.number); |
d0fb5eae | 4983 | watchpoint_del_at_next_stop (b); |
18a18393 VP |
4984 | /* We've already printed what needs to be printed. */ |
4985 | bs->print_it = print_it_done; | |
4986 | break; | |
4987 | } | |
4988 | } | |
4989 | else /* must_check_value == 0 */ | |
4990 | { | |
4991 | /* This is a case where some watchpoint(s) triggered, but | |
4992 | not at the address of this watchpoint, or else no | |
4993 | watchpoint triggered after all. So don't print | |
4994 | anything for this watchpoint. */ | |
4995 | bs->print_it = print_it_noop; | |
4996 | bs->stop = 0; | |
4997 | } | |
4998 | } | |
4999 | } | |
5000 | ||
5001 | ||
5002 | /* Check conditions (condition proper, frame, thread and ignore count) | |
5003 | of breakpoint referred to by BS. If we should not stop for this | |
5004 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5005 | |
18a18393 VP |
5006 | static void |
5007 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
5008 | { | |
5009 | int thread_id = pid_to_thread_id (ptid); | |
2bdf28a0 JK |
5010 | const struct bp_location *bl; |
5011 | struct breakpoint *b; | |
5012 | ||
5013 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5014 | bl = bs->bp_location_at; |
2bdf28a0 | 5015 | gdb_assert (bl != NULL); |
f431efe5 | 5016 | b = bs->breakpoint_at; |
2bdf28a0 | 5017 | gdb_assert (b != NULL); |
18a18393 | 5018 | |
b775012e LM |
5019 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5020 | need to do so again since GDB does not know if we stopped due to a | |
5021 | breakpoint or a single step breakpoint. */ | |
5022 | ||
18a18393 | 5023 | if (frame_id_p (b->frame_id) |
edb3359d | 5024 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 VP |
5025 | bs->stop = 0; |
5026 | else if (bs->stop) | |
5027 | { | |
5028 | int value_is_zero = 0; | |
60e1c644 PA |
5029 | struct expression *cond; |
5030 | ||
7371cf6d PM |
5031 | /* Evaluate Python breakpoints that have a "stop" |
5032 | method implemented. */ | |
5033 | if (b->py_bp_object) | |
5034 | bs->stop = gdbpy_should_stop (b->py_bp_object); | |
5035 | ||
60e1c644 | 5036 | if (is_watchpoint (b)) |
3a5c3e22 PA |
5037 | { |
5038 | struct watchpoint *w = (struct watchpoint *) b; | |
5039 | ||
5040 | cond = w->cond_exp; | |
5041 | } | |
60e1c644 PA |
5042 | else |
5043 | cond = bl->cond; | |
5044 | ||
f431efe5 | 5045 | if (cond && b->disposition != disp_del_at_next_stop) |
18a18393 | 5046 | { |
60e1c644 | 5047 | int within_current_scope = 1; |
3a5c3e22 | 5048 | struct watchpoint * w; |
60e1c644 | 5049 | |
c5bc3a77 DJ |
5050 | /* We use value_mark and value_free_to_mark because it could |
5051 | be a long time before we return to the command level and | |
5052 | call free_all_values. We can't call free_all_values | |
5053 | because we might be in the middle of evaluating a | |
5054 | function call. */ | |
5055 | struct value *mark = value_mark (); | |
5056 | ||
3a5c3e22 PA |
5057 | if (is_watchpoint (b)) |
5058 | w = (struct watchpoint *) b; | |
5059 | else | |
5060 | w = NULL; | |
5061 | ||
edb3359d DJ |
5062 | /* Need to select the frame, with all that implies so that |
5063 | the conditions will have the right context. Because we | |
5064 | use the frame, we will not see an inlined function's | |
5065 | variables when we arrive at a breakpoint at the start | |
5066 | of the inlined function; the current frame will be the | |
5067 | call site. */ | |
3a5c3e22 | 5068 | if (w == NULL || w->cond_exp_valid_block == NULL) |
60e1c644 PA |
5069 | select_frame (get_current_frame ()); |
5070 | else | |
5071 | { | |
5072 | struct frame_info *frame; | |
5073 | ||
5074 | /* For local watchpoint expressions, which particular | |
5075 | instance of a local is being watched matters, so we | |
5076 | keep track of the frame to evaluate the expression | |
5077 | in. To evaluate the condition however, it doesn't | |
5078 | really matter which instantiation of the function | |
5079 | where the condition makes sense triggers the | |
5080 | watchpoint. This allows an expression like "watch | |
5081 | global if q > 10" set in `func', catch writes to | |
5082 | global on all threads that call `func', or catch | |
5083 | writes on all recursive calls of `func' by a single | |
5084 | thread. We simply always evaluate the condition in | |
5085 | the innermost frame that's executing where it makes | |
5086 | sense to evaluate the condition. It seems | |
5087 | intuitive. */ | |
3a5c3e22 | 5088 | frame = block_innermost_frame (w->cond_exp_valid_block); |
60e1c644 PA |
5089 | if (frame != NULL) |
5090 | select_frame (frame); | |
5091 | else | |
5092 | within_current_scope = 0; | |
5093 | } | |
5094 | if (within_current_scope) | |
5095 | value_is_zero | |
5096 | = catch_errors (breakpoint_cond_eval, cond, | |
5097 | "Error in testing breakpoint condition:\n", | |
5098 | RETURN_MASK_ALL); | |
5099 | else | |
5100 | { | |
5101 | warning (_("Watchpoint condition cannot be tested " | |
5102 | "in the current scope")); | |
5103 | /* If we failed to set the right context for this | |
5104 | watchpoint, unconditionally report it. */ | |
5105 | value_is_zero = 0; | |
5106 | } | |
4a64f543 | 5107 | /* FIXME-someday, should give breakpoint #. */ |
c5bc3a77 | 5108 | value_free_to_mark (mark); |
18a18393 | 5109 | } |
60e1c644 PA |
5110 | |
5111 | if (cond && value_is_zero) | |
18a18393 VP |
5112 | { |
5113 | bs->stop = 0; | |
5114 | } | |
5115 | else if (b->thread != -1 && b->thread != thread_id) | |
5116 | { | |
5117 | bs->stop = 0; | |
5118 | } | |
5119 | else if (b->ignore_count > 0) | |
5120 | { | |
5121 | b->ignore_count--; | |
5122 | annotate_ignore_count_change (); | |
5123 | bs->stop = 0; | |
4a64f543 | 5124 | /* Increase the hit count even though we don't stop. */ |
18a18393 | 5125 | ++(b->hit_count); |
8d3788bd | 5126 | observer_notify_breakpoint_modified (b); |
18a18393 VP |
5127 | } |
5128 | } | |
5129 | } | |
5130 | ||
5131 | ||
9709f61c | 5132 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 5133 | BP_ADDR in thread PTID. |
c906108c | 5134 | |
d983da9c | 5135 | Determine whether we stopped at a breakpoint, etc, or whether we |
4a64f543 MS |
5136 | don't understand this stop. Result is a chain of bpstat's such |
5137 | that: | |
c906108c | 5138 | |
c5aa993b | 5139 | if we don't understand the stop, the result is a null pointer. |
c906108c | 5140 | |
c5aa993b | 5141 | if we understand why we stopped, the result is not null. |
c906108c | 5142 | |
c5aa993b JM |
5143 | Each element of the chain refers to a particular breakpoint or |
5144 | watchpoint at which we have stopped. (We may have stopped for | |
5145 | several reasons concurrently.) | |
c906108c | 5146 | |
c5aa993b JM |
5147 | Each element of the chain has valid next, breakpoint_at, |
5148 | commands, FIXME??? fields. */ | |
c906108c SS |
5149 | |
5150 | bpstat | |
6c95b8df | 5151 | bpstat_stop_status (struct address_space *aspace, |
09ac7c10 TT |
5152 | CORE_ADDR bp_addr, ptid_t ptid, |
5153 | const struct target_waitstatus *ws) | |
c906108c | 5154 | { |
0d381245 | 5155 | struct breakpoint *b = NULL; |
afe38095 | 5156 | struct bp_location *bl; |
20874c92 | 5157 | struct bp_location *loc; |
5760d0ab JK |
5158 | /* First item of allocated bpstat's. */ |
5159 | bpstat bs_head = NULL, *bs_link = &bs_head; | |
c906108c | 5160 | /* Pointer to the last thing in the chain currently. */ |
5760d0ab | 5161 | bpstat bs; |
20874c92 | 5162 | int ix; |
429374b8 | 5163 | int need_remove_insert; |
f431efe5 | 5164 | int removed_any; |
c906108c | 5165 | |
f431efe5 PA |
5166 | /* First, build the bpstat chain with locations that explain a |
5167 | target stop, while being careful to not set the target running, | |
5168 | as that may invalidate locations (in particular watchpoint | |
5169 | locations are recreated). Resuming will happen here with | |
5170 | breakpoint conditions or watchpoint expressions that include | |
5171 | inferior function calls. */ | |
c5aa993b | 5172 | |
429374b8 JK |
5173 | ALL_BREAKPOINTS (b) |
5174 | { | |
5175 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) | |
5176 | continue; | |
a5606eee | 5177 | |
429374b8 JK |
5178 | for (bl = b->loc; bl != NULL; bl = bl->next) |
5179 | { | |
4a64f543 MS |
5180 | /* For hardware watchpoints, we look only at the first |
5181 | location. The watchpoint_check function will work on the | |
5182 | entire expression, not the individual locations. For | |
5183 | read watchpoints, the watchpoints_triggered function has | |
5184 | checked all locations already. */ | |
429374b8 JK |
5185 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5186 | break; | |
18a18393 | 5187 | |
f6592439 | 5188 | if (!bl->enabled || bl->shlib_disabled) |
429374b8 | 5189 | continue; |
c5aa993b | 5190 | |
09ac7c10 | 5191 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5192 | continue; |
c5aa993b | 5193 | |
4a64f543 MS |
5194 | /* Come here if it's a watchpoint, or if the break address |
5195 | matches. */ | |
c5aa993b | 5196 | |
4a64f543 MS |
5197 | bs = bpstat_alloc (bl, &bs_link); /* Alloc a bpstat to |
5198 | explain stop. */ | |
c5aa993b | 5199 | |
f431efe5 PA |
5200 | /* Assume we stop. Should we find a watchpoint that is not |
5201 | actually triggered, or if the condition of the breakpoint | |
5202 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5203 | bs->stop = 1; |
5204 | bs->print = 1; | |
d983da9c | 5205 | |
f431efe5 PA |
5206 | /* If this is a scope breakpoint, mark the associated |
5207 | watchpoint as triggered so that we will handle the | |
5208 | out-of-scope event. We'll get to the watchpoint next | |
5209 | iteration. */ | |
d0fb5eae | 5210 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5211 | { |
5212 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5213 | ||
5214 | w->watchpoint_triggered = watch_triggered_yes; | |
5215 | } | |
f431efe5 PA |
5216 | } |
5217 | } | |
5218 | ||
5219 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
5220 | { | |
f1310107 | 5221 | if (breakpoint_location_address_match (loc, aspace, bp_addr)) |
f431efe5 | 5222 | { |
5760d0ab | 5223 | bs = bpstat_alloc (loc, &bs_link); |
f431efe5 PA |
5224 | /* For hits of moribund locations, we should just proceed. */ |
5225 | bs->stop = 0; | |
5226 | bs->print = 0; | |
5227 | bs->print_it = print_it_noop; | |
5228 | } | |
5229 | } | |
5230 | ||
edcc5120 TT |
5231 | /* A bit of special processing for shlib breakpoints. We need to |
5232 | process solib loading here, so that the lists of loaded and | |
5233 | unloaded libraries are correct before we handle "catch load" and | |
5234 | "catch unload". */ | |
5235 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5236 | { | |
5d268276 | 5237 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5238 | { |
5239 | handle_solib_event (); | |
5240 | break; | |
5241 | } | |
5242 | } | |
5243 | ||
f431efe5 PA |
5244 | /* Now go through the locations that caused the target to stop, and |
5245 | check whether we're interested in reporting this stop to higher | |
5246 | layers, or whether we should resume the target transparently. */ | |
5247 | ||
5248 | removed_any = 0; | |
5249 | ||
5760d0ab | 5250 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5251 | { |
5252 | if (!bs->stop) | |
5253 | continue; | |
5254 | ||
f431efe5 | 5255 | b = bs->breakpoint_at; |
348d480f PA |
5256 | b->ops->check_status (bs); |
5257 | if (bs->stop) | |
28010a5d | 5258 | { |
348d480f | 5259 | bpstat_check_breakpoint_conditions (bs, ptid); |
f431efe5 | 5260 | |
429374b8 JK |
5261 | if (bs->stop) |
5262 | { | |
5263 | ++(b->hit_count); | |
8d3788bd | 5264 | observer_notify_breakpoint_modified (b); |
c906108c | 5265 | |
4a64f543 | 5266 | /* We will stop here. */ |
429374b8 JK |
5267 | if (b->disposition == disp_disable) |
5268 | { | |
816338b5 SS |
5269 | --(b->enable_count); |
5270 | if (b->enable_count <= 0 | |
5271 | && b->enable_state != bp_permanent) | |
429374b8 | 5272 | b->enable_state = bp_disabled; |
f431efe5 | 5273 | removed_any = 1; |
429374b8 JK |
5274 | } |
5275 | if (b->silent) | |
5276 | bs->print = 0; | |
5277 | bs->commands = b->commands; | |
9add0f1b | 5278 | incref_counted_command_line (bs->commands); |
abf85f46 JK |
5279 | if (command_line_is_silent (bs->commands |
5280 | ? bs->commands->commands : NULL)) | |
5281 | bs->print = 0; | |
429374b8 JK |
5282 | } |
5283 | ||
348d480f | 5284 | } |
a9b3a50f PA |
5285 | |
5286 | /* Print nothing for this entry if we don't stop or don't | |
5287 | print. */ | |
5288 | if (!bs->stop || !bs->print) | |
5289 | bs->print_it = print_it_noop; | |
429374b8 | 5290 | } |
876fa593 | 5291 | |
d983da9c DJ |
5292 | /* If we aren't stopping, the value of some hardware watchpoint may |
5293 | not have changed, but the intermediate memory locations we are | |
5294 | watching may have. Don't bother if we're stopping; this will get | |
5295 | done later. */ | |
d832cb68 | 5296 | need_remove_insert = 0; |
5760d0ab JK |
5297 | if (! bpstat_causes_stop (bs_head)) |
5298 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5299 | if (!bs->stop |
f431efe5 PA |
5300 | && bs->breakpoint_at |
5301 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5302 | { |
3a5c3e22 PA |
5303 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5304 | ||
5305 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5306 | need_remove_insert = 1; |
d983da9c DJ |
5307 | } |
5308 | ||
d832cb68 | 5309 | if (need_remove_insert) |
2d134ed3 | 5310 | update_global_location_list (1); |
f431efe5 PA |
5311 | else if (removed_any) |
5312 | update_global_location_list (0); | |
d832cb68 | 5313 | |
5760d0ab | 5314 | return bs_head; |
c906108c | 5315 | } |
628fe4e4 JK |
5316 | |
5317 | static void | |
5318 | handle_jit_event (void) | |
5319 | { | |
5320 | struct frame_info *frame; | |
5321 | struct gdbarch *gdbarch; | |
5322 | ||
5323 | /* Switch terminal for any messages produced by | |
5324 | breakpoint_re_set. */ | |
5325 | target_terminal_ours_for_output (); | |
5326 | ||
5327 | frame = get_current_frame (); | |
5328 | gdbarch = get_frame_arch (frame); | |
5329 | ||
5330 | jit_event_handler (gdbarch); | |
5331 | ||
5332 | target_terminal_inferior (); | |
5333 | } | |
5334 | ||
edcc5120 TT |
5335 | /* Handle an solib event by calling solib_add. */ |
5336 | ||
5337 | void | |
5338 | handle_solib_event (void) | |
5339 | { | |
5340 | clear_program_space_solib_cache (current_inferior ()->pspace); | |
5341 | ||
5342 | /* Check for any newly added shared libraries if we're supposed to | |
5343 | be adding them automatically. Switch terminal for any messages | |
5344 | produced by breakpoint_re_set. */ | |
5345 | target_terminal_ours_for_output (); | |
5346 | #ifdef SOLIB_ADD | |
5347 | SOLIB_ADD (NULL, 0, ¤t_target, auto_solib_add); | |
5348 | #else | |
5349 | solib_add (NULL, 0, ¤t_target, auto_solib_add); | |
5350 | #endif | |
5351 | target_terminal_inferior (); | |
5352 | } | |
5353 | ||
628fe4e4 JK |
5354 | /* Prepare WHAT final decision for infrun. */ |
5355 | ||
5356 | /* Decide what infrun needs to do with this bpstat. */ | |
5357 | ||
c906108c | 5358 | struct bpstat_what |
0e30163f | 5359 | bpstat_what (bpstat bs_head) |
c906108c | 5360 | { |
c906108c | 5361 | struct bpstat_what retval; |
628fe4e4 | 5362 | int jit_event = 0; |
0e30163f | 5363 | bpstat bs; |
c906108c | 5364 | |
628fe4e4 | 5365 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5366 | retval.call_dummy = STOP_NONE; |
186c406b | 5367 | retval.is_longjmp = 0; |
628fe4e4 | 5368 | |
0e30163f | 5369 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5370 | { |
628fe4e4 JK |
5371 | /* Extract this BS's action. After processing each BS, we check |
5372 | if its action overrides all we've seem so far. */ | |
5373 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5374 | enum bptype bptype; | |
5375 | ||
c906108c | 5376 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5377 | { |
5378 | /* I suspect this can happen if it was a momentary | |
5379 | breakpoint which has since been deleted. */ | |
5380 | bptype = bp_none; | |
5381 | } | |
20874c92 | 5382 | else |
f431efe5 | 5383 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5384 | |
5385 | switch (bptype) | |
c906108c SS |
5386 | { |
5387 | case bp_none: | |
628fe4e4 | 5388 | break; |
c906108c SS |
5389 | case bp_breakpoint: |
5390 | case bp_hardware_breakpoint: | |
5391 | case bp_until: | |
5392 | case bp_finish: | |
a9b3a50f | 5393 | case bp_shlib_event: |
c906108c SS |
5394 | if (bs->stop) |
5395 | { | |
5396 | if (bs->print) | |
628fe4e4 | 5397 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5398 | else |
628fe4e4 | 5399 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5400 | } |
5401 | else | |
628fe4e4 | 5402 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5403 | break; |
5404 | case bp_watchpoint: | |
5405 | case bp_hardware_watchpoint: | |
5406 | case bp_read_watchpoint: | |
5407 | case bp_access_watchpoint: | |
5408 | if (bs->stop) | |
5409 | { | |
5410 | if (bs->print) | |
628fe4e4 | 5411 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5412 | else |
628fe4e4 | 5413 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5414 | } |
5415 | else | |
628fe4e4 JK |
5416 | { |
5417 | /* There was a watchpoint, but we're not stopping. | |
5418 | This requires no further action. */ | |
5419 | } | |
c906108c SS |
5420 | break; |
5421 | case bp_longjmp: | |
e2e4d78b | 5422 | case bp_longjmp_call_dummy: |
186c406b | 5423 | case bp_exception: |
628fe4e4 | 5424 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; |
e2e4d78b | 5425 | retval.is_longjmp = bptype != bp_exception; |
c906108c SS |
5426 | break; |
5427 | case bp_longjmp_resume: | |
186c406b | 5428 | case bp_exception_resume: |
628fe4e4 | 5429 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; |
186c406b | 5430 | retval.is_longjmp = bptype == bp_longjmp_resume; |
c906108c SS |
5431 | break; |
5432 | case bp_step_resume: | |
5433 | if (bs->stop) | |
628fe4e4 JK |
5434 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5435 | else | |
c906108c | 5436 | { |
628fe4e4 JK |
5437 | /* It is for the wrong frame. */ |
5438 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5439 | } |
c906108c | 5440 | break; |
2c03e5be PA |
5441 | case bp_hp_step_resume: |
5442 | if (bs->stop) | |
5443 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5444 | else | |
5445 | { | |
5446 | /* It is for the wrong frame. */ | |
5447 | this_action = BPSTAT_WHAT_SINGLE; | |
5448 | } | |
5449 | break; | |
c906108c | 5450 | case bp_watchpoint_scope: |
c4093a6a | 5451 | case bp_thread_event: |
1900040c | 5452 | case bp_overlay_event: |
0fd8e87f | 5453 | case bp_longjmp_master: |
aa7d318d | 5454 | case bp_std_terminate_master: |
186c406b | 5455 | case bp_exception_master: |
628fe4e4 | 5456 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5457 | break; |
ce78b96d | 5458 | case bp_catchpoint: |
c5aa993b JM |
5459 | if (bs->stop) |
5460 | { | |
5461 | if (bs->print) | |
628fe4e4 | 5462 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5463 | else |
628fe4e4 | 5464 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5465 | } |
5466 | else | |
628fe4e4 JK |
5467 | { |
5468 | /* There was a catchpoint, but we're not stopping. | |
5469 | This requires no further action. */ | |
5470 | } | |
5471 | break; | |
628fe4e4 JK |
5472 | case bp_jit_event: |
5473 | jit_event = 1; | |
5474 | this_action = BPSTAT_WHAT_SINGLE; | |
c5aa993b | 5475 | break; |
c906108c | 5476 | case bp_call_dummy: |
53a5351d JM |
5477 | /* Make sure the action is stop (silent or noisy), |
5478 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5479 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5480 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5481 | break; |
5482 | case bp_std_terminate: | |
5483 | /* Make sure the action is stop (silent or noisy), | |
5484 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5485 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5486 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5487 | break; |
1042e4c0 | 5488 | case bp_tracepoint: |
7a697b8d | 5489 | case bp_fast_tracepoint: |
0fb4aa4b | 5490 | case bp_static_tracepoint: |
1042e4c0 SS |
5491 | /* Tracepoint hits should not be reported back to GDB, and |
5492 | if one got through somehow, it should have been filtered | |
5493 | out already. */ | |
5494 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5495 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5496 | break; |
5497 | case bp_gnu_ifunc_resolver: | |
5498 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5499 | this_action = BPSTAT_WHAT_SINGLE; | |
5500 | break; | |
5501 | case bp_gnu_ifunc_resolver_return: | |
5502 | /* The breakpoint will be removed, execution will restart from the | |
5503 | PC of the former breakpoint. */ | |
5504 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5505 | break; | |
e7e0cddf SS |
5506 | |
5507 | case bp_dprintf: | |
5508 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5509 | break; | |
5510 | ||
628fe4e4 JK |
5511 | default: |
5512 | internal_error (__FILE__, __LINE__, | |
5513 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5514 | } |
628fe4e4 JK |
5515 | |
5516 | retval.main_action = max (retval.main_action, this_action); | |
c906108c | 5517 | } |
628fe4e4 | 5518 | |
0e30163f JK |
5519 | /* These operations may affect the bs->breakpoint_at state so they are |
5520 | delayed after MAIN_ACTION is decided above. */ | |
5521 | ||
628fe4e4 JK |
5522 | if (jit_event) |
5523 | { | |
5524 | if (debug_infrun) | |
5525 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_jit_event\n"); | |
5526 | ||
5527 | handle_jit_event (); | |
5528 | } | |
5529 | ||
0e30163f JK |
5530 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5531 | { | |
5532 | struct breakpoint *b = bs->breakpoint_at; | |
5533 | ||
5534 | if (b == NULL) | |
5535 | continue; | |
5536 | switch (b->type) | |
5537 | { | |
5538 | case bp_gnu_ifunc_resolver: | |
5539 | gnu_ifunc_resolver_stop (b); | |
5540 | break; | |
5541 | case bp_gnu_ifunc_resolver_return: | |
5542 | gnu_ifunc_resolver_return_stop (b); | |
5543 | break; | |
5544 | } | |
5545 | } | |
5546 | ||
c906108c SS |
5547 | return retval; |
5548 | } | |
5549 | ||
5550 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
5551 | without hardware support). This isn't related to a specific bpstat, | |
5552 | just to things like whether watchpoints are set. */ | |
5553 | ||
c5aa993b | 5554 | int |
fba45db2 | 5555 | bpstat_should_step (void) |
c906108c SS |
5556 | { |
5557 | struct breakpoint *b; | |
cc59ec59 | 5558 | |
c906108c | 5559 | ALL_BREAKPOINTS (b) |
717a8278 | 5560 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 5561 | return 1; |
c906108c SS |
5562 | return 0; |
5563 | } | |
5564 | ||
67822962 PA |
5565 | int |
5566 | bpstat_causes_stop (bpstat bs) | |
5567 | { | |
5568 | for (; bs != NULL; bs = bs->next) | |
5569 | if (bs->stop) | |
5570 | return 1; | |
5571 | ||
5572 | return 0; | |
5573 | } | |
5574 | ||
c906108c | 5575 | \f |
c5aa993b | 5576 | |
170b53b2 UW |
5577 | /* Compute a string of spaces suitable to indent the next line |
5578 | so it starts at the position corresponding to the table column | |
5579 | named COL_NAME in the currently active table of UIOUT. */ | |
5580 | ||
5581 | static char * | |
5582 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5583 | { | |
5584 | static char wrap_indent[80]; | |
5585 | int i, total_width, width, align; | |
5586 | char *text; | |
5587 | ||
5588 | total_width = 0; | |
5589 | for (i = 1; ui_out_query_field (uiout, i, &width, &align, &text); i++) | |
5590 | { | |
5591 | if (strcmp (text, col_name) == 0) | |
5592 | { | |
5593 | gdb_assert (total_width < sizeof wrap_indent); | |
5594 | memset (wrap_indent, ' ', total_width); | |
5595 | wrap_indent[total_width] = 0; | |
5596 | ||
5597 | return wrap_indent; | |
5598 | } | |
5599 | ||
5600 | total_width += width + 1; | |
5601 | } | |
5602 | ||
5603 | return NULL; | |
5604 | } | |
5605 | ||
b775012e LM |
5606 | /* Determine if the locations of this breakpoint will have their conditions |
5607 | evaluated by the target, host or a mix of both. Returns the following: | |
5608 | ||
5609 | "host": Host evals condition. | |
5610 | "host or target": Host or Target evals condition. | |
5611 | "target": Target evals condition. | |
5612 | */ | |
5613 | ||
5614 | static const char * | |
5615 | bp_condition_evaluator (struct breakpoint *b) | |
5616 | { | |
5617 | struct bp_location *bl; | |
5618 | char host_evals = 0; | |
5619 | char target_evals = 0; | |
5620 | ||
5621 | if (!b) | |
5622 | return NULL; | |
5623 | ||
5624 | if (!is_breakpoint (b)) | |
5625 | return NULL; | |
5626 | ||
5627 | if (gdb_evaluates_breakpoint_condition_p () | |
5628 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5629 | return condition_evaluation_host; | |
5630 | ||
5631 | for (bl = b->loc; bl; bl = bl->next) | |
5632 | { | |
5633 | if (bl->cond_bytecode) | |
5634 | target_evals++; | |
5635 | else | |
5636 | host_evals++; | |
5637 | } | |
5638 | ||
5639 | if (host_evals && target_evals) | |
5640 | return condition_evaluation_both; | |
5641 | else if (target_evals) | |
5642 | return condition_evaluation_target; | |
5643 | else | |
5644 | return condition_evaluation_host; | |
5645 | } | |
5646 | ||
5647 | /* Determine the breakpoint location's condition evaluator. This is | |
5648 | similar to bp_condition_evaluator, but for locations. */ | |
5649 | ||
5650 | static const char * | |
5651 | bp_location_condition_evaluator (struct bp_location *bl) | |
5652 | { | |
5653 | if (bl && !is_breakpoint (bl->owner)) | |
5654 | return NULL; | |
5655 | ||
5656 | if (gdb_evaluates_breakpoint_condition_p () | |
5657 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5658 | return condition_evaluation_host; | |
5659 | ||
5660 | if (bl && bl->cond_bytecode) | |
5661 | return condition_evaluation_target; | |
5662 | else | |
5663 | return condition_evaluation_host; | |
5664 | } | |
5665 | ||
859825b8 JK |
5666 | /* Print the LOC location out of the list of B->LOC locations. */ |
5667 | ||
170b53b2 UW |
5668 | static void |
5669 | print_breakpoint_location (struct breakpoint *b, | |
5670 | struct bp_location *loc) | |
0d381245 | 5671 | { |
79a45e25 | 5672 | struct ui_out *uiout = current_uiout; |
6c95b8df PA |
5673 | struct cleanup *old_chain = save_current_program_space (); |
5674 | ||
859825b8 JK |
5675 | if (loc != NULL && loc->shlib_disabled) |
5676 | loc = NULL; | |
5677 | ||
6c95b8df PA |
5678 | if (loc != NULL) |
5679 | set_current_program_space (loc->pspace); | |
5680 | ||
56435ebe TT |
5681 | if (b->display_canonical) |
5682 | ui_out_field_string (uiout, "what", b->addr_string); | |
f8eba3c6 | 5683 | else if (loc && loc->source_file) |
0d381245 VP |
5684 | { |
5685 | struct symbol *sym | |
5686 | = find_pc_sect_function (loc->address, loc->section); | |
5687 | if (sym) | |
5688 | { | |
5689 | ui_out_text (uiout, "in "); | |
5690 | ui_out_field_string (uiout, "func", | |
5691 | SYMBOL_PRINT_NAME (sym)); | |
170b53b2 UW |
5692 | ui_out_text (uiout, " "); |
5693 | ui_out_wrap_hint (uiout, wrap_indent_at_field (uiout, "what")); | |
5694 | ui_out_text (uiout, "at "); | |
0d381245 | 5695 | } |
f8eba3c6 | 5696 | ui_out_field_string (uiout, "file", loc->source_file); |
0d381245 VP |
5697 | ui_out_text (uiout, ":"); |
5698 | ||
5699 | if (ui_out_is_mi_like_p (uiout)) | |
5700 | { | |
5701 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
0b0865da | 5702 | const char *fullname = symtab_to_fullname (sal.symtab); |
0d381245 | 5703 | |
f35a17b5 | 5704 | ui_out_field_string (uiout, "fullname", fullname); |
0d381245 VP |
5705 | } |
5706 | ||
f8eba3c6 | 5707 | ui_out_field_int (uiout, "line", loc->line_number); |
0d381245 | 5708 | } |
859825b8 | 5709 | else if (loc) |
0d381245 | 5710 | { |
f99d8bf4 PA |
5711 | struct ui_file *stb = mem_fileopen (); |
5712 | struct cleanup *stb_chain = make_cleanup_ui_file_delete (stb); | |
170b53b2 | 5713 | |
f99d8bf4 | 5714 | print_address_symbolic (loc->gdbarch, loc->address, stb, |
22e722e1 | 5715 | demangle, ""); |
0d381245 | 5716 | ui_out_field_stream (uiout, "at", stb); |
170b53b2 UW |
5717 | |
5718 | do_cleanups (stb_chain); | |
0d381245 | 5719 | } |
859825b8 JK |
5720 | else |
5721 | ui_out_field_string (uiout, "pending", b->addr_string); | |
6c95b8df | 5722 | |
b775012e LM |
5723 | if (loc && is_breakpoint (b) |
5724 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
5725 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
5726 | { | |
5727 | ui_out_text (uiout, " ("); | |
5728 | ui_out_field_string (uiout, "evaluated-by", | |
5729 | bp_location_condition_evaluator (loc)); | |
5730 | ui_out_text (uiout, ")"); | |
5731 | } | |
5732 | ||
6c95b8df | 5733 | do_cleanups (old_chain); |
0d381245 VP |
5734 | } |
5735 | ||
269b11a2 PA |
5736 | static const char * |
5737 | bptype_string (enum bptype type) | |
c906108c | 5738 | { |
c4093a6a JM |
5739 | struct ep_type_description |
5740 | { | |
5741 | enum bptype type; | |
5742 | char *description; | |
5743 | }; | |
5744 | static struct ep_type_description bptypes[] = | |
c906108c | 5745 | { |
c5aa993b JM |
5746 | {bp_none, "?deleted?"}, |
5747 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 5748 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
5749 | {bp_until, "until"}, |
5750 | {bp_finish, "finish"}, | |
5751 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 5752 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
5753 | {bp_read_watchpoint, "read watchpoint"}, |
5754 | {bp_access_watchpoint, "acc watchpoint"}, | |
5755 | {bp_longjmp, "longjmp"}, | |
5756 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 5757 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
5758 | {bp_exception, "exception"}, |
5759 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 5760 | {bp_step_resume, "step resume"}, |
2c03e5be | 5761 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
5762 | {bp_watchpoint_scope, "watchpoint scope"}, |
5763 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 5764 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 5765 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 5766 | {bp_thread_event, "thread events"}, |
1900040c | 5767 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 5768 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 5769 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 5770 | {bp_exception_master, "exception master"}, |
ce78b96d | 5771 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 5772 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 5773 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 5774 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 5775 | {bp_dprintf, "dprintf"}, |
4efc6507 | 5776 | {bp_jit_event, "jit events"}, |
0e30163f JK |
5777 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
5778 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 5779 | }; |
269b11a2 PA |
5780 | |
5781 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
5782 | || ((int) type != bptypes[(int) type].type)) | |
5783 | internal_error (__FILE__, __LINE__, | |
5784 | _("bptypes table does not describe type #%d."), | |
5785 | (int) type); | |
5786 | ||
5787 | return bptypes[(int) type].description; | |
5788 | } | |
5789 | ||
5790 | /* Print B to gdb_stdout. */ | |
5791 | ||
5792 | static void | |
5793 | print_one_breakpoint_location (struct breakpoint *b, | |
5794 | struct bp_location *loc, | |
5795 | int loc_number, | |
5796 | struct bp_location **last_loc, | |
269b11a2 PA |
5797 | int allflag) |
5798 | { | |
5799 | struct command_line *l; | |
c2c6d25f | 5800 | static char bpenables[] = "nynny"; |
c906108c | 5801 | |
79a45e25 | 5802 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
5803 | int header_of_multiple = 0; |
5804 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
5805 | struct value_print_options opts; |
5806 | ||
5807 | get_user_print_options (&opts); | |
0d381245 VP |
5808 | |
5809 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
5810 | /* See comment in print_one_breakpoint concerning treatment of |
5811 | breakpoints with single disabled location. */ | |
0d381245 VP |
5812 | if (loc == NULL |
5813 | && (b->loc != NULL | |
5814 | && (b->loc->next != NULL || !b->loc->enabled))) | |
5815 | header_of_multiple = 1; | |
5816 | if (loc == NULL) | |
5817 | loc = b->loc; | |
5818 | ||
c4093a6a JM |
5819 | annotate_record (); |
5820 | ||
5821 | /* 1 */ | |
5822 | annotate_field (0); | |
0d381245 VP |
5823 | if (part_of_multiple) |
5824 | { | |
5825 | char *formatted; | |
0c6773c1 | 5826 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
5827 | ui_out_field_string (uiout, "number", formatted); |
5828 | xfree (formatted); | |
5829 | } | |
5830 | else | |
5831 | { | |
5832 | ui_out_field_int (uiout, "number", b->number); | |
5833 | } | |
c4093a6a JM |
5834 | |
5835 | /* 2 */ | |
5836 | annotate_field (1); | |
0d381245 VP |
5837 | if (part_of_multiple) |
5838 | ui_out_field_skip (uiout, "type"); | |
269b11a2 PA |
5839 | else |
5840 | ui_out_field_string (uiout, "type", bptype_string (b->type)); | |
c4093a6a JM |
5841 | |
5842 | /* 3 */ | |
5843 | annotate_field (2); | |
0d381245 VP |
5844 | if (part_of_multiple) |
5845 | ui_out_field_skip (uiout, "disp"); | |
5846 | else | |
2cec12e5 | 5847 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 5848 | |
c4093a6a JM |
5849 | |
5850 | /* 4 */ | |
5851 | annotate_field (3); | |
0d381245 | 5852 | if (part_of_multiple) |
54e52265 | 5853 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 5854 | else |
4a64f543 MS |
5855 | ui_out_field_fmt (uiout, "enabled", "%c", |
5856 | bpenables[(int) b->enable_state]); | |
54e52265 | 5857 | ui_out_spaces (uiout, 2); |
0d381245 | 5858 | |
c4093a6a JM |
5859 | |
5860 | /* 5 and 6 */ | |
3086aeae | 5861 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 5862 | { |
4a64f543 MS |
5863 | /* Although the print_one can possibly print all locations, |
5864 | calling it here is not likely to get any nice result. So, | |
5865 | make sure there's just one location. */ | |
0d381245 | 5866 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 5867 | b->ops->print_one (b, last_loc); |
0d381245 | 5868 | } |
3086aeae DJ |
5869 | else |
5870 | switch (b->type) | |
5871 | { | |
5872 | case bp_none: | |
5873 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 5874 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 5875 | break; |
c906108c | 5876 | |
3086aeae DJ |
5877 | case bp_watchpoint: |
5878 | case bp_hardware_watchpoint: | |
5879 | case bp_read_watchpoint: | |
5880 | case bp_access_watchpoint: | |
3a5c3e22 PA |
5881 | { |
5882 | struct watchpoint *w = (struct watchpoint *) b; | |
5883 | ||
5884 | /* Field 4, the address, is omitted (which makes the columns | |
5885 | not line up too nicely with the headers, but the effect | |
5886 | is relatively readable). */ | |
5887 | if (opts.addressprint) | |
5888 | ui_out_field_skip (uiout, "addr"); | |
5889 | annotate_field (5); | |
5890 | ui_out_field_string (uiout, "what", w->exp_string); | |
5891 | } | |
3086aeae DJ |
5892 | break; |
5893 | ||
3086aeae DJ |
5894 | case bp_breakpoint: |
5895 | case bp_hardware_breakpoint: | |
5896 | case bp_until: | |
5897 | case bp_finish: | |
5898 | case bp_longjmp: | |
5899 | case bp_longjmp_resume: | |
e2e4d78b | 5900 | case bp_longjmp_call_dummy: |
186c406b TT |
5901 | case bp_exception: |
5902 | case bp_exception_resume: | |
3086aeae | 5903 | case bp_step_resume: |
2c03e5be | 5904 | case bp_hp_step_resume: |
3086aeae DJ |
5905 | case bp_watchpoint_scope: |
5906 | case bp_call_dummy: | |
aa7d318d | 5907 | case bp_std_terminate: |
3086aeae DJ |
5908 | case bp_shlib_event: |
5909 | case bp_thread_event: | |
5910 | case bp_overlay_event: | |
0fd8e87f | 5911 | case bp_longjmp_master: |
aa7d318d | 5912 | case bp_std_terminate_master: |
186c406b | 5913 | case bp_exception_master: |
1042e4c0 | 5914 | case bp_tracepoint: |
7a697b8d | 5915 | case bp_fast_tracepoint: |
0fb4aa4b | 5916 | case bp_static_tracepoint: |
e7e0cddf | 5917 | case bp_dprintf: |
4efc6507 | 5918 | case bp_jit_event: |
0e30163f JK |
5919 | case bp_gnu_ifunc_resolver: |
5920 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 5921 | if (opts.addressprint) |
3086aeae DJ |
5922 | { |
5923 | annotate_field (4); | |
54e52265 | 5924 | if (header_of_multiple) |
0d381245 | 5925 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 5926 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 5927 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 5928 | else |
5af949e3 UW |
5929 | ui_out_field_core_addr (uiout, "addr", |
5930 | loc->gdbarch, loc->address); | |
3086aeae DJ |
5931 | } |
5932 | annotate_field (5); | |
0d381245 | 5933 | if (!header_of_multiple) |
170b53b2 | 5934 | print_breakpoint_location (b, loc); |
0d381245 | 5935 | if (b->loc) |
a6d9a66e | 5936 | *last_loc = b->loc; |
3086aeae DJ |
5937 | break; |
5938 | } | |
c906108c | 5939 | |
6c95b8df PA |
5940 | |
5941 | /* For backward compatibility, don't display inferiors unless there | |
5942 | are several. */ | |
5943 | if (loc != NULL | |
5944 | && !header_of_multiple | |
5945 | && (allflag | |
f5656ead | 5946 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
5947 | && (number_of_program_spaces () > 1 |
5948 | || number_of_inferiors () > 1) | |
4a64f543 MS |
5949 | /* LOC is for existing B, it cannot be in |
5950 | moribund_locations and thus having NULL OWNER. */ | |
6c95b8df PA |
5951 | && loc->owner->type != bp_catchpoint))) |
5952 | { | |
5953 | struct inferior *inf; | |
5954 | int first = 1; | |
5955 | ||
5956 | for (inf = inferior_list; inf != NULL; inf = inf->next) | |
5957 | { | |
5958 | if (inf->pspace == loc->pspace) | |
5959 | { | |
5960 | if (first) | |
5961 | { | |
5962 | first = 0; | |
5963 | ui_out_text (uiout, " inf "); | |
5964 | } | |
5965 | else | |
5966 | ui_out_text (uiout, ", "); | |
5967 | ui_out_text (uiout, plongest (inf->num)); | |
5968 | } | |
5969 | } | |
5970 | } | |
5971 | ||
4a306c9a | 5972 | if (!part_of_multiple) |
c4093a6a | 5973 | { |
4a306c9a JB |
5974 | if (b->thread != -1) |
5975 | { | |
5976 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 5977 | "stop only in" line a little further down. */ |
4a306c9a JB |
5978 | ui_out_text (uiout, " thread "); |
5979 | ui_out_field_int (uiout, "thread", b->thread); | |
5980 | } | |
5981 | else if (b->task != 0) | |
5982 | { | |
5983 | ui_out_text (uiout, " task "); | |
5984 | ui_out_field_int (uiout, "task", b->task); | |
5985 | } | |
c4093a6a | 5986 | } |
f1310107 | 5987 | |
8b93c638 | 5988 | ui_out_text (uiout, "\n"); |
f1310107 | 5989 | |
348d480f | 5990 | if (!part_of_multiple) |
f1310107 TJB |
5991 | b->ops->print_one_detail (b, uiout); |
5992 | ||
0d381245 | 5993 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
5994 | { |
5995 | annotate_field (6); | |
8b93c638 | 5996 | ui_out_text (uiout, "\tstop only in stack frame at "); |
e5dd4106 | 5997 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 5998 | the frame ID. */ |
5af949e3 UW |
5999 | ui_out_field_core_addr (uiout, "frame", |
6000 | b->gdbarch, b->frame_id.stack_addr); | |
8b93c638 | 6001 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
6002 | } |
6003 | ||
28010a5d | 6004 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6005 | { |
6006 | annotate_field (7); | |
d77f58be | 6007 | if (is_tracepoint (b)) |
1042e4c0 SS |
6008 | ui_out_text (uiout, "\ttrace only if "); |
6009 | else | |
6010 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 | 6011 | ui_out_field_string (uiout, "cond", b->cond_string); |
b775012e LM |
6012 | |
6013 | /* Print whether the target is doing the breakpoint's condition | |
6014 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6015 | if (is_breakpoint (b) | |
6016 | && breakpoint_condition_evaluation_mode () | |
6017 | == condition_evaluation_target) | |
6018 | { | |
6019 | ui_out_text (uiout, " ("); | |
6020 | ui_out_field_string (uiout, "evaluated-by", | |
6021 | bp_condition_evaluator (b)); | |
6022 | ui_out_text (uiout, " evals)"); | |
6023 | } | |
0101ce28 JJ |
6024 | ui_out_text (uiout, "\n"); |
6025 | } | |
6026 | ||
0d381245 | 6027 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6028 | { |
4a64f543 | 6029 | /* FIXME should make an annotation for this. */ |
8b93c638 JM |
6030 | ui_out_text (uiout, "\tstop only in thread "); |
6031 | ui_out_field_int (uiout, "thread", b->thread); | |
6032 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
6033 | } |
6034 | ||
556ec64d YQ |
6035 | if (!part_of_multiple) |
6036 | { | |
6037 | if (b->hit_count) | |
31f56a27 YQ |
6038 | { |
6039 | /* FIXME should make an annotation for this. */ | |
6040 | if (is_catchpoint (b)) | |
6041 | ui_out_text (uiout, "\tcatchpoint"); | |
6042 | else if (is_tracepoint (b)) | |
6043 | ui_out_text (uiout, "\ttracepoint"); | |
6044 | else | |
6045 | ui_out_text (uiout, "\tbreakpoint"); | |
6046 | ui_out_text (uiout, " already hit "); | |
6047 | ui_out_field_int (uiout, "times", b->hit_count); | |
6048 | if (b->hit_count == 1) | |
6049 | ui_out_text (uiout, " time\n"); | |
6050 | else | |
6051 | ui_out_text (uiout, " times\n"); | |
6052 | } | |
556ec64d YQ |
6053 | else |
6054 | { | |
31f56a27 YQ |
6055 | /* Output the count also if it is zero, but only if this is mi. */ |
6056 | if (ui_out_is_mi_like_p (uiout)) | |
6057 | ui_out_field_int (uiout, "times", b->hit_count); | |
556ec64d YQ |
6058 | } |
6059 | } | |
8b93c638 | 6060 | |
0d381245 | 6061 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6062 | { |
6063 | annotate_field (8); | |
8b93c638 JM |
6064 | ui_out_text (uiout, "\tignore next "); |
6065 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
6066 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 6067 | } |
059fb39f | 6068 | |
816338b5 SS |
6069 | /* Note that an enable count of 1 corresponds to "enable once" |
6070 | behavior, which is reported by the combination of enablement and | |
6071 | disposition, so we don't need to mention it here. */ | |
6072 | if (!part_of_multiple && b->enable_count > 1) | |
6073 | { | |
6074 | annotate_field (8); | |
6075 | ui_out_text (uiout, "\tdisable after "); | |
6076 | /* Tweak the wording to clarify that ignore and enable counts | |
6077 | are distinct, and have additive effect. */ | |
6078 | if (b->ignore_count) | |
6079 | ui_out_text (uiout, "additional "); | |
6080 | else | |
6081 | ui_out_text (uiout, "next "); | |
6082 | ui_out_field_int (uiout, "enable", b->enable_count); | |
6083 | ui_out_text (uiout, " hits\n"); | |
6084 | } | |
6085 | ||
f196051f SS |
6086 | if (!part_of_multiple && is_tracepoint (b)) |
6087 | { | |
6088 | struct tracepoint *tp = (struct tracepoint *) b; | |
6089 | ||
6090 | if (tp->traceframe_usage) | |
6091 | { | |
6092 | ui_out_text (uiout, "\ttrace buffer usage "); | |
6093 | ui_out_field_int (uiout, "traceframe-usage", tp->traceframe_usage); | |
6094 | ui_out_text (uiout, " bytes\n"); | |
6095 | } | |
6096 | } | |
6097 | ||
d3ce09f5 SS |
6098 | if (!part_of_multiple && b->extra_string |
6099 | && b->type == bp_dprintf && !b->commands) | |
6100 | { | |
6101 | annotate_field (7); | |
6102 | ui_out_text (uiout, "\t(agent printf) "); | |
6103 | ui_out_field_string (uiout, "printf", b->extra_string); | |
6104 | ui_out_text (uiout, "\n"); | |
6105 | } | |
6106 | ||
9add0f1b | 6107 | l = b->commands ? b->commands->commands : NULL; |
059fb39f | 6108 | if (!part_of_multiple && l) |
c4093a6a | 6109 | { |
3b31d625 EZ |
6110 | struct cleanup *script_chain; |
6111 | ||
c4093a6a | 6112 | annotate_field (9); |
3b31d625 | 6113 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 6114 | print_command_lines (uiout, l, 4); |
3b31d625 | 6115 | do_cleanups (script_chain); |
c4093a6a | 6116 | } |
d24317b4 | 6117 | |
d9b3f62e | 6118 | if (is_tracepoint (b)) |
1042e4c0 | 6119 | { |
d9b3f62e PA |
6120 | struct tracepoint *t = (struct tracepoint *) b; |
6121 | ||
6122 | if (!part_of_multiple && t->pass_count) | |
6123 | { | |
6124 | annotate_field (10); | |
6125 | ui_out_text (uiout, "\tpass count "); | |
6126 | ui_out_field_int (uiout, "pass", t->pass_count); | |
6127 | ui_out_text (uiout, " \n"); | |
6128 | } | |
f2a8bc8a YQ |
6129 | |
6130 | /* Don't display it when tracepoint or tracepoint location is | |
6131 | pending. */ | |
6132 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6133 | { | |
6134 | annotate_field (11); | |
6135 | ||
6136 | if (ui_out_is_mi_like_p (uiout)) | |
6137 | ui_out_field_string (uiout, "installed", | |
6138 | loc->inserted ? "y" : "n"); | |
6139 | else | |
6140 | { | |
6141 | if (loc->inserted) | |
6142 | ui_out_text (uiout, "\t"); | |
6143 | else | |
6144 | ui_out_text (uiout, "\tnot "); | |
6145 | ui_out_text (uiout, "installed on target\n"); | |
6146 | } | |
6147 | } | |
1042e4c0 SS |
6148 | } |
6149 | ||
d24317b4 VP |
6150 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
6151 | { | |
3a5c3e22 PA |
6152 | if (is_watchpoint (b)) |
6153 | { | |
6154 | struct watchpoint *w = (struct watchpoint *) b; | |
6155 | ||
6156 | ui_out_field_string (uiout, "original-location", w->exp_string); | |
6157 | } | |
6158 | else if (b->addr_string) | |
d24317b4 | 6159 | ui_out_field_string (uiout, "original-location", b->addr_string); |
d24317b4 | 6160 | } |
c4093a6a | 6161 | } |
c5aa993b | 6162 | |
0d381245 VP |
6163 | static void |
6164 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6165 | struct bp_location **last_loc, |
6c95b8df | 6166 | int allflag) |
0d381245 | 6167 | { |
8d3788bd | 6168 | struct cleanup *bkpt_chain; |
79a45e25 | 6169 | struct ui_out *uiout = current_uiout; |
8d3788bd VP |
6170 | |
6171 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); | |
6172 | ||
12c5a436 | 6173 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
8d3788bd | 6174 | do_cleanups (bkpt_chain); |
0d381245 VP |
6175 | |
6176 | /* If this breakpoint has custom print function, | |
6177 | it's already printed. Otherwise, print individual | |
6178 | locations, if any. */ | |
6179 | if (b->ops == NULL || b->ops->print_one == NULL) | |
6180 | { | |
4a64f543 MS |
6181 | /* If breakpoint has a single location that is disabled, we |
6182 | print it as if it had several locations, since otherwise it's | |
6183 | hard to represent "breakpoint enabled, location disabled" | |
6184 | situation. | |
6185 | ||
6186 | Note that while hardware watchpoints have several locations | |
a3be7890 | 6187 | internally, that's not a property exposed to user. */ |
0d381245 | 6188 | if (b->loc |
a5606eee | 6189 | && !is_hardware_watchpoint (b) |
8d3788bd | 6190 | && (b->loc->next || !b->loc->enabled)) |
0d381245 VP |
6191 | { |
6192 | struct bp_location *loc; | |
6193 | int n = 1; | |
8d3788bd | 6194 | |
0d381245 | 6195 | for (loc = b->loc; loc; loc = loc->next, ++n) |
8d3788bd VP |
6196 | { |
6197 | struct cleanup *inner2 = | |
6198 | make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
6199 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); | |
6200 | do_cleanups (inner2); | |
6201 | } | |
0d381245 VP |
6202 | } |
6203 | } | |
6204 | } | |
6205 | ||
a6d9a66e UW |
6206 | static int |
6207 | breakpoint_address_bits (struct breakpoint *b) | |
6208 | { | |
6209 | int print_address_bits = 0; | |
6210 | struct bp_location *loc; | |
6211 | ||
6212 | for (loc = b->loc; loc; loc = loc->next) | |
6213 | { | |
c7437ca6 PA |
6214 | int addr_bit; |
6215 | ||
6216 | /* Software watchpoints that aren't watching memory don't have | |
6217 | an address to print. */ | |
6218 | if (b->type == bp_watchpoint && loc->watchpoint_type == -1) | |
6219 | continue; | |
6220 | ||
6221 | addr_bit = gdbarch_addr_bit (loc->gdbarch); | |
a6d9a66e UW |
6222 | if (addr_bit > print_address_bits) |
6223 | print_address_bits = addr_bit; | |
6224 | } | |
6225 | ||
6226 | return print_address_bits; | |
6227 | } | |
0d381245 | 6228 | |
c4093a6a JM |
6229 | struct captured_breakpoint_query_args |
6230 | { | |
6231 | int bnum; | |
6232 | }; | |
c5aa993b | 6233 | |
c4093a6a | 6234 | static int |
2b65245e | 6235 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
6236 | { |
6237 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 6238 | struct breakpoint *b; |
a6d9a66e | 6239 | struct bp_location *dummy_loc = NULL; |
cc59ec59 | 6240 | |
c4093a6a JM |
6241 | ALL_BREAKPOINTS (b) |
6242 | { | |
6243 | if (args->bnum == b->number) | |
c5aa993b | 6244 | { |
12c5a436 | 6245 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6246 | return GDB_RC_OK; |
c5aa993b | 6247 | } |
c4093a6a JM |
6248 | } |
6249 | return GDB_RC_NONE; | |
6250 | } | |
c5aa993b | 6251 | |
c4093a6a | 6252 | enum gdb_rc |
4a64f543 MS |
6253 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, |
6254 | char **error_message) | |
c4093a6a JM |
6255 | { |
6256 | struct captured_breakpoint_query_args args; | |
cc59ec59 | 6257 | |
c4093a6a JM |
6258 | args.bnum = bnum; |
6259 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
4a64f543 | 6260 | an error. */ |
b0b13bb4 DJ |
6261 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
6262 | error_message, RETURN_MASK_ALL) < 0) | |
6263 | return GDB_RC_FAIL; | |
6264 | else | |
6265 | return GDB_RC_OK; | |
c4093a6a | 6266 | } |
c5aa993b | 6267 | |
09d682a4 TT |
6268 | /* Return true if this breakpoint was set by the user, false if it is |
6269 | internal or momentary. */ | |
6270 | ||
6271 | int | |
6272 | user_breakpoint_p (struct breakpoint *b) | |
6273 | { | |
46c6471b | 6274 | return b->number > 0; |
09d682a4 TT |
6275 | } |
6276 | ||
7f3b0473 | 6277 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
6278 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
6279 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
6280 | FILTER is non-NULL, call it on each breakpoint and only include the | |
6281 | ones for which it returns non-zero. Return the total number of | |
6282 | breakpoints listed. */ | |
c906108c | 6283 | |
d77f58be | 6284 | static int |
e5a67952 | 6285 | breakpoint_1 (char *args, int allflag, |
4a64f543 | 6286 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 6287 | { |
52f0bd74 | 6288 | struct breakpoint *b; |
a6d9a66e | 6289 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6290 | int nr_printable_breakpoints; |
3b31d625 | 6291 | struct cleanup *bkpttbl_chain; |
79a45b7d | 6292 | struct value_print_options opts; |
a6d9a66e | 6293 | int print_address_bits = 0; |
269b11a2 | 6294 | int print_type_col_width = 14; |
79a45e25 | 6295 | struct ui_out *uiout = current_uiout; |
269b11a2 | 6296 | |
79a45b7d TT |
6297 | get_user_print_options (&opts); |
6298 | ||
4a64f543 MS |
6299 | /* Compute the number of rows in the table, as well as the size |
6300 | required for address fields. */ | |
7f3b0473 AC |
6301 | nr_printable_breakpoints = 0; |
6302 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6303 | { |
6304 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6305 | if (filter && !filter (b)) | |
6306 | continue; | |
6307 | ||
6308 | /* If we have an "args" string, it is a list of breakpoints to | |
6309 | accept. Skip the others. */ | |
6310 | if (args != NULL && *args != '\0') | |
6311 | { | |
6312 | if (allflag && parse_and_eval_long (args) != b->number) | |
6313 | continue; | |
6314 | if (!allflag && !number_is_in_list (args, b->number)) | |
6315 | continue; | |
6316 | } | |
269b11a2 | 6317 | |
e5a67952 MS |
6318 | if (allflag || user_breakpoint_p (b)) |
6319 | { | |
6320 | int addr_bit, type_len; | |
a6d9a66e | 6321 | |
e5a67952 MS |
6322 | addr_bit = breakpoint_address_bits (b); |
6323 | if (addr_bit > print_address_bits) | |
6324 | print_address_bits = addr_bit; | |
269b11a2 | 6325 | |
e5a67952 MS |
6326 | type_len = strlen (bptype_string (b->type)); |
6327 | if (type_len > print_type_col_width) | |
6328 | print_type_col_width = type_len; | |
6329 | ||
6330 | nr_printable_breakpoints++; | |
6331 | } | |
6332 | } | |
7f3b0473 | 6333 | |
79a45b7d | 6334 | if (opts.addressprint) |
3b31d625 | 6335 | bkpttbl_chain |
3e43a32a MS |
6336 | = make_cleanup_ui_out_table_begin_end (uiout, 6, |
6337 | nr_printable_breakpoints, | |
3b31d625 | 6338 | "BreakpointTable"); |
8b93c638 | 6339 | else |
3b31d625 | 6340 | bkpttbl_chain |
3e43a32a MS |
6341 | = make_cleanup_ui_out_table_begin_end (uiout, 5, |
6342 | nr_printable_breakpoints, | |
3b31d625 | 6343 | "BreakpointTable"); |
8b93c638 | 6344 | |
7f3b0473 | 6345 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
6346 | annotate_breakpoints_headers (); |
6347 | if (nr_printable_breakpoints > 0) | |
6348 | annotate_field (0); | |
4a64f543 | 6349 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
6350 | if (nr_printable_breakpoints > 0) |
6351 | annotate_field (1); | |
269b11a2 | 6352 | ui_out_table_header (uiout, print_type_col_width, ui_left, |
4a64f543 | 6353 | "type", "Type"); /* 2 */ |
d7faa9e7 AC |
6354 | if (nr_printable_breakpoints > 0) |
6355 | annotate_field (2); | |
4a64f543 | 6356 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ |
d7faa9e7 AC |
6357 | if (nr_printable_breakpoints > 0) |
6358 | annotate_field (3); | |
54e52265 | 6359 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 6360 | if (opts.addressprint) |
e5a67952 MS |
6361 | { |
6362 | if (nr_printable_breakpoints > 0) | |
6363 | annotate_field (4); | |
6364 | if (print_address_bits <= 32) | |
6365 | ui_out_table_header (uiout, 10, ui_left, | |
6366 | "addr", "Address"); /* 5 */ | |
6367 | else | |
6368 | ui_out_table_header (uiout, 18, ui_left, | |
6369 | "addr", "Address"); /* 5 */ | |
6370 | } | |
d7faa9e7 AC |
6371 | if (nr_printable_breakpoints > 0) |
6372 | annotate_field (5); | |
6373 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
6374 | ui_out_table_body (uiout); | |
6375 | if (nr_printable_breakpoints > 0) | |
6376 | annotate_breakpoints_table (); | |
7f3b0473 | 6377 | |
c4093a6a | 6378 | ALL_BREAKPOINTS (b) |
e5a67952 MS |
6379 | { |
6380 | QUIT; | |
6381 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6382 | if (filter && !filter (b)) | |
6383 | continue; | |
6384 | ||
6385 | /* If we have an "args" string, it is a list of breakpoints to | |
6386 | accept. Skip the others. */ | |
6387 | ||
6388 | if (args != NULL && *args != '\0') | |
6389 | { | |
6390 | if (allflag) /* maintenance info breakpoint */ | |
6391 | { | |
6392 | if (parse_and_eval_long (args) != b->number) | |
6393 | continue; | |
6394 | } | |
6395 | else /* all others */ | |
6396 | { | |
6397 | if (!number_is_in_list (args, b->number)) | |
6398 | continue; | |
6399 | } | |
6400 | } | |
6401 | /* We only print out user settable breakpoints unless the | |
6402 | allflag is set. */ | |
6403 | if (allflag || user_breakpoint_p (b)) | |
12c5a436 | 6404 | print_one_breakpoint (b, &last_loc, allflag); |
e5a67952 MS |
6405 | } |
6406 | ||
3b31d625 | 6407 | do_cleanups (bkpttbl_chain); |
698384cd | 6408 | |
7f3b0473 | 6409 | if (nr_printable_breakpoints == 0) |
c906108c | 6410 | { |
4a64f543 MS |
6411 | /* If there's a filter, let the caller decide how to report |
6412 | empty list. */ | |
d77f58be SS |
6413 | if (!filter) |
6414 | { | |
e5a67952 | 6415 | if (args == NULL || *args == '\0') |
d77f58be SS |
6416 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); |
6417 | else | |
4a64f543 | 6418 | ui_out_message (uiout, 0, |
e5a67952 MS |
6419 | "No breakpoint or watchpoint matching '%s'.\n", |
6420 | args); | |
d77f58be | 6421 | } |
c906108c SS |
6422 | } |
6423 | else | |
c4093a6a | 6424 | { |
a6d9a66e UW |
6425 | if (last_loc && !server_command) |
6426 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 6427 | } |
c906108c | 6428 | |
4a64f543 | 6429 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6430 | there have been breakpoints? */ |
c906108c | 6431 | annotate_breakpoints_table_end (); |
d77f58be SS |
6432 | |
6433 | return nr_printable_breakpoints; | |
c906108c SS |
6434 | } |
6435 | ||
ad443146 SS |
6436 | /* Display the value of default-collect in a way that is generally |
6437 | compatible with the breakpoint list. */ | |
6438 | ||
6439 | static void | |
6440 | default_collect_info (void) | |
6441 | { | |
79a45e25 PA |
6442 | struct ui_out *uiout = current_uiout; |
6443 | ||
ad443146 SS |
6444 | /* If it has no value (which is frequently the case), say nothing; a |
6445 | message like "No default-collect." gets in user's face when it's | |
6446 | not wanted. */ | |
6447 | if (!*default_collect) | |
6448 | return; | |
6449 | ||
6450 | /* The following phrase lines up nicely with per-tracepoint collect | |
6451 | actions. */ | |
6452 | ui_out_text (uiout, "default collect "); | |
6453 | ui_out_field_string (uiout, "default-collect", default_collect); | |
6454 | ui_out_text (uiout, " \n"); | |
6455 | } | |
6456 | ||
c906108c | 6457 | static void |
e5a67952 | 6458 | breakpoints_info (char *args, int from_tty) |
c906108c | 6459 | { |
e5a67952 | 6460 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
6461 | |
6462 | default_collect_info (); | |
d77f58be SS |
6463 | } |
6464 | ||
6465 | static void | |
e5a67952 | 6466 | watchpoints_info (char *args, int from_tty) |
d77f58be | 6467 | { |
e5a67952 | 6468 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
79a45e25 | 6469 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6470 | |
6471 | if (num_printed == 0) | |
6472 | { | |
e5a67952 | 6473 | if (args == NULL || *args == '\0') |
d77f58be SS |
6474 | ui_out_message (uiout, 0, "No watchpoints.\n"); |
6475 | else | |
e5a67952 | 6476 | ui_out_message (uiout, 0, "No watchpoint matching '%s'.\n", args); |
d77f58be | 6477 | } |
c906108c SS |
6478 | } |
6479 | ||
7a292a7a | 6480 | static void |
e5a67952 | 6481 | maintenance_info_breakpoints (char *args, int from_tty) |
c906108c | 6482 | { |
e5a67952 | 6483 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
6484 | |
6485 | default_collect_info (); | |
c906108c SS |
6486 | } |
6487 | ||
0d381245 | 6488 | static int |
714835d5 | 6489 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6490 | struct program_space *pspace, |
714835d5 | 6491 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6492 | { |
6493 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6494 | |
0d381245 VP |
6495 | for (; bl; bl = bl->next) |
6496 | { | |
6c95b8df PA |
6497 | if (bl->pspace == pspace |
6498 | && bl->address == pc | |
0d381245 VP |
6499 | && (!overlay_debugging || bl->section == section)) |
6500 | return 1; | |
6501 | } | |
6502 | return 0; | |
6503 | } | |
6504 | ||
672f9b60 | 6505 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6506 | concerns with logical breakpoints, so we match program spaces, not |
6507 | address spaces. */ | |
c906108c SS |
6508 | |
6509 | static void | |
6c95b8df PA |
6510 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6511 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6512 | struct obj_section *section, int thread) |
c906108c | 6513 | { |
52f0bd74 AC |
6514 | int others = 0; |
6515 | struct breakpoint *b; | |
c906108c SS |
6516 | |
6517 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
6518 | others += (user_breakpoint_p (b) |
6519 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
6520 | if (others > 0) |
6521 | { | |
a3f17187 AC |
6522 | if (others == 1) |
6523 | printf_filtered (_("Note: breakpoint ")); | |
6524 | else /* if (others == ???) */ | |
6525 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6526 | ALL_BREAKPOINTS (b) |
672f9b60 | 6527 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6528 | { |
6529 | others--; | |
6530 | printf_filtered ("%d", b->number); | |
6531 | if (b->thread == -1 && thread != -1) | |
6532 | printf_filtered (" (all threads)"); | |
6533 | else if (b->thread != -1) | |
6534 | printf_filtered (" (thread %d)", b->thread); | |
6535 | printf_filtered ("%s%s ", | |
059fb39f | 6536 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6537 | || b->enable_state == bp_call_disabled) |
0d381245 VP |
6538 | ? " (disabled)" |
6539 | : b->enable_state == bp_permanent | |
6540 | ? " (permanent)" | |
6541 | : ""), | |
6542 | (others > 1) ? "," | |
6543 | : ((others == 1) ? " and" : "")); | |
6544 | } | |
a3f17187 | 6545 | printf_filtered (_("also set at pc ")); |
5af949e3 | 6546 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
6547 | printf_filtered (".\n"); |
6548 | } | |
6549 | } | |
6550 | \f | |
c906108c | 6551 | |
e4f237da KB |
6552 | /* Return true iff it is meaningful to use the address member of |
6553 | BPT. For some breakpoint types, the address member is irrelevant | |
6554 | and it makes no sense to attempt to compare it to other addresses | |
6555 | (or use it for any other purpose either). | |
6556 | ||
4a64f543 MS |
6557 | More specifically, each of the following breakpoint types will |
6558 | always have a zero valued address and we don't want to mark | |
6559 | breakpoints of any of these types to be a duplicate of an actual | |
6560 | breakpoint at address zero: | |
e4f237da KB |
6561 | |
6562 | bp_watchpoint | |
2d134ed3 PA |
6563 | bp_catchpoint |
6564 | ||
6565 | */ | |
e4f237da KB |
6566 | |
6567 | static int | |
6568 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
6569 | { | |
6570 | enum bptype type = bpt->type; | |
6571 | ||
2d134ed3 PA |
6572 | return (type != bp_watchpoint && type != bp_catchpoint); |
6573 | } | |
6574 | ||
6575 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6576 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6577 | ||
6578 | static int | |
4a64f543 MS |
6579 | watchpoint_locations_match (struct bp_location *loc1, |
6580 | struct bp_location *loc2) | |
2d134ed3 | 6581 | { |
3a5c3e22 PA |
6582 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6583 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6584 | ||
6585 | /* Both of them must exist. */ | |
6586 | gdb_assert (w1 != NULL); | |
6587 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6588 | |
4a64f543 MS |
6589 | /* If the target can evaluate the condition expression in hardware, |
6590 | then we we need to insert both watchpoints even if they are at | |
6591 | the same place. Otherwise the watchpoint will only trigger when | |
6592 | the condition of whichever watchpoint was inserted evaluates to | |
6593 | true, not giving a chance for GDB to check the condition of the | |
6594 | other watchpoint. */ | |
3a5c3e22 | 6595 | if ((w1->cond_exp |
4a64f543 MS |
6596 | && target_can_accel_watchpoint_condition (loc1->address, |
6597 | loc1->length, | |
0cf6dd15 | 6598 | loc1->watchpoint_type, |
3a5c3e22 PA |
6599 | w1->cond_exp)) |
6600 | || (w2->cond_exp | |
4a64f543 MS |
6601 | && target_can_accel_watchpoint_condition (loc2->address, |
6602 | loc2->length, | |
0cf6dd15 | 6603 | loc2->watchpoint_type, |
3a5c3e22 | 6604 | w2->cond_exp))) |
0cf6dd15 TJB |
6605 | return 0; |
6606 | ||
85d721b8 PA |
6607 | /* Note that this checks the owner's type, not the location's. In |
6608 | case the target does not support read watchpoints, but does | |
6609 | support access watchpoints, we'll have bp_read_watchpoint | |
6610 | watchpoints with hw_access locations. Those should be considered | |
6611 | duplicates of hw_read locations. The hw_read locations will | |
6612 | become hw_access locations later. */ | |
2d134ed3 PA |
6613 | return (loc1->owner->type == loc2->owner->type |
6614 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6615 | && loc1->address == loc2->address | |
6616 | && loc1->length == loc2->length); | |
e4f237da KB |
6617 | } |
6618 | ||
6c95b8df PA |
6619 | /* Returns true if {ASPACE1,ADDR1} and {ASPACE2,ADDR2} represent the |
6620 | same breakpoint location. In most targets, this can only be true | |
6621 | if ASPACE1 matches ASPACE2. On targets that have global | |
6622 | breakpoints, the address space doesn't really matter. */ | |
6623 | ||
6624 | static int | |
6625 | breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1, | |
6626 | struct address_space *aspace2, CORE_ADDR addr2) | |
6627 | { | |
f5656ead | 6628 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6629 | || aspace1 == aspace2) |
6630 | && addr1 == addr2); | |
6631 | } | |
6632 | ||
f1310107 TJB |
6633 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6634 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6635 | matches ASPACE2. On targets that have global breakpoints, the address | |
6636 | space doesn't really matter. */ | |
6637 | ||
6638 | static int | |
6639 | breakpoint_address_match_range (struct address_space *aspace1, CORE_ADDR addr1, | |
6640 | int len1, struct address_space *aspace2, | |
6641 | CORE_ADDR addr2) | |
6642 | { | |
f5656ead | 6643 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
6644 | || aspace1 == aspace2) |
6645 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6646 | } | |
6647 | ||
6648 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6649 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6650 | matches the breakpoint's address space. On targets that have global | |
6651 | breakpoints, the address space doesn't really matter. */ | |
6652 | ||
6653 | static int | |
6654 | breakpoint_location_address_match (struct bp_location *bl, | |
6655 | struct address_space *aspace, | |
6656 | CORE_ADDR addr) | |
6657 | { | |
6658 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6659 | aspace, addr) | |
6660 | || (bl->length | |
6661 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6662 | bl->address, bl->length, | |
6663 | aspace, addr))); | |
6664 | } | |
6665 | ||
1e4d1764 YQ |
6666 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6667 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6668 | true, otherwise returns false. */ | |
6669 | ||
6670 | static int | |
6671 | tracepoint_locations_match (struct bp_location *loc1, | |
6672 | struct bp_location *loc2) | |
6673 | { | |
6674 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6675 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6676 | locations at the same address of different tracepoints are regarded as | |
6677 | different locations. */ | |
6678 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
6679 | else | |
6680 | return 0; | |
6681 | } | |
6682 | ||
2d134ed3 PA |
6683 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
6684 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
6685 | represent the same location. */ | |
6686 | ||
6687 | static int | |
4a64f543 MS |
6688 | breakpoint_locations_match (struct bp_location *loc1, |
6689 | struct bp_location *loc2) | |
2d134ed3 | 6690 | { |
2bdf28a0 JK |
6691 | int hw_point1, hw_point2; |
6692 | ||
6693 | /* Both of them must not be in moribund_locations. */ | |
6694 | gdb_assert (loc1->owner != NULL); | |
6695 | gdb_assert (loc2->owner != NULL); | |
6696 | ||
6697 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
6698 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
6699 | |
6700 | if (hw_point1 != hw_point2) | |
6701 | return 0; | |
6702 | else if (hw_point1) | |
6703 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
6704 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
6705 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 6706 | else |
f1310107 TJB |
6707 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
6708 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
6709 | loc2->pspace->aspace, loc2->address) | |
6710 | && loc1->length == loc2->length); | |
2d134ed3 PA |
6711 | } |
6712 | ||
76897487 KB |
6713 | static void |
6714 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
6715 | int bnum, int have_bnum) | |
6716 | { | |
f63fbe86 MS |
6717 | /* The longest string possibly returned by hex_string_custom |
6718 | is 50 chars. These must be at least that big for safety. */ | |
6719 | char astr1[64]; | |
6720 | char astr2[64]; | |
76897487 | 6721 | |
bb599908 PH |
6722 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
6723 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 6724 | if (have_bnum) |
8a3fe4f8 | 6725 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
6726 | bnum, astr1, astr2); |
6727 | else | |
8a3fe4f8 | 6728 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
6729 | } |
6730 | ||
4a64f543 MS |
6731 | /* Adjust a breakpoint's address to account for architectural |
6732 | constraints on breakpoint placement. Return the adjusted address. | |
6733 | Note: Very few targets require this kind of adjustment. For most | |
6734 | targets, this function is simply the identity function. */ | |
76897487 KB |
6735 | |
6736 | static CORE_ADDR | |
a6d9a66e UW |
6737 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
6738 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 6739 | { |
a6d9a66e | 6740 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
6741 | { |
6742 | /* Very few targets need any kind of breakpoint adjustment. */ | |
6743 | return bpaddr; | |
6744 | } | |
88f7da05 KB |
6745 | else if (bptype == bp_watchpoint |
6746 | || bptype == bp_hardware_watchpoint | |
6747 | || bptype == bp_read_watchpoint | |
6748 | || bptype == bp_access_watchpoint | |
fe798b75 | 6749 | || bptype == bp_catchpoint) |
88f7da05 KB |
6750 | { |
6751 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
6752 | have their addresses modified. */ | |
6753 | return bpaddr; | |
6754 | } | |
76897487 KB |
6755 | else |
6756 | { | |
6757 | CORE_ADDR adjusted_bpaddr; | |
6758 | ||
6759 | /* Some targets have architectural constraints on the placement | |
6760 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 6761 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
6762 | |
6763 | /* An adjusted breakpoint address can significantly alter | |
6764 | a user's expectations. Print a warning if an adjustment | |
6765 | is required. */ | |
6766 | if (adjusted_bpaddr != bpaddr) | |
6767 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
6768 | ||
6769 | return adjusted_bpaddr; | |
6770 | } | |
6771 | } | |
6772 | ||
28010a5d PA |
6773 | void |
6774 | init_bp_location (struct bp_location *loc, const struct bp_location_ops *ops, | |
6775 | struct breakpoint *owner) | |
7cc221ef | 6776 | { |
7cc221ef DJ |
6777 | memset (loc, 0, sizeof (*loc)); |
6778 | ||
348d480f PA |
6779 | gdb_assert (ops != NULL); |
6780 | ||
28010a5d PA |
6781 | loc->ops = ops; |
6782 | loc->owner = owner; | |
511a6cd4 | 6783 | loc->cond = NULL; |
b775012e | 6784 | loc->cond_bytecode = NULL; |
0d381245 VP |
6785 | loc->shlib_disabled = 0; |
6786 | loc->enabled = 1; | |
e049a4b5 | 6787 | |
28010a5d | 6788 | switch (owner->type) |
e049a4b5 DJ |
6789 | { |
6790 | case bp_breakpoint: | |
6791 | case bp_until: | |
6792 | case bp_finish: | |
6793 | case bp_longjmp: | |
6794 | case bp_longjmp_resume: | |
e2e4d78b | 6795 | case bp_longjmp_call_dummy: |
186c406b TT |
6796 | case bp_exception: |
6797 | case bp_exception_resume: | |
e049a4b5 | 6798 | case bp_step_resume: |
2c03e5be | 6799 | case bp_hp_step_resume: |
e049a4b5 DJ |
6800 | case bp_watchpoint_scope: |
6801 | case bp_call_dummy: | |
aa7d318d | 6802 | case bp_std_terminate: |
e049a4b5 DJ |
6803 | case bp_shlib_event: |
6804 | case bp_thread_event: | |
6805 | case bp_overlay_event: | |
4efc6507 | 6806 | case bp_jit_event: |
0fd8e87f | 6807 | case bp_longjmp_master: |
aa7d318d | 6808 | case bp_std_terminate_master: |
186c406b | 6809 | case bp_exception_master: |
0e30163f JK |
6810 | case bp_gnu_ifunc_resolver: |
6811 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 6812 | case bp_dprintf: |
e049a4b5 | 6813 | loc->loc_type = bp_loc_software_breakpoint; |
b775012e | 6814 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
6815 | break; |
6816 | case bp_hardware_breakpoint: | |
6817 | loc->loc_type = bp_loc_hardware_breakpoint; | |
b775012e | 6818 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
6819 | break; |
6820 | case bp_hardware_watchpoint: | |
6821 | case bp_read_watchpoint: | |
6822 | case bp_access_watchpoint: | |
6823 | loc->loc_type = bp_loc_hardware_watchpoint; | |
6824 | break; | |
6825 | case bp_watchpoint: | |
ce78b96d | 6826 | case bp_catchpoint: |
15c3d785 PA |
6827 | case bp_tracepoint: |
6828 | case bp_fast_tracepoint: | |
0fb4aa4b | 6829 | case bp_static_tracepoint: |
e049a4b5 DJ |
6830 | loc->loc_type = bp_loc_other; |
6831 | break; | |
6832 | default: | |
e2e0b3e5 | 6833 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
6834 | } |
6835 | ||
f431efe5 | 6836 | loc->refc = 1; |
28010a5d PA |
6837 | } |
6838 | ||
6839 | /* Allocate a struct bp_location. */ | |
6840 | ||
6841 | static struct bp_location * | |
6842 | allocate_bp_location (struct breakpoint *bpt) | |
6843 | { | |
348d480f PA |
6844 | return bpt->ops->allocate_location (bpt); |
6845 | } | |
7cc221ef | 6846 | |
f431efe5 PA |
6847 | static void |
6848 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 6849 | { |
348d480f | 6850 | loc->ops->dtor (loc); |
fe3f5fa8 VP |
6851 | xfree (loc); |
6852 | } | |
6853 | ||
f431efe5 PA |
6854 | /* Increment reference count. */ |
6855 | ||
6856 | static void | |
6857 | incref_bp_location (struct bp_location *bl) | |
6858 | { | |
6859 | ++bl->refc; | |
6860 | } | |
6861 | ||
6862 | /* Decrement reference count. If the reference count reaches 0, | |
6863 | destroy the bp_location. Sets *BLP to NULL. */ | |
6864 | ||
6865 | static void | |
6866 | decref_bp_location (struct bp_location **blp) | |
6867 | { | |
0807b50c PA |
6868 | gdb_assert ((*blp)->refc > 0); |
6869 | ||
f431efe5 PA |
6870 | if (--(*blp)->refc == 0) |
6871 | free_bp_location (*blp); | |
6872 | *blp = NULL; | |
6873 | } | |
6874 | ||
346774a9 | 6875 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 6876 | |
346774a9 PA |
6877 | static void |
6878 | add_to_breakpoint_chain (struct breakpoint *b) | |
c906108c | 6879 | { |
346774a9 | 6880 | struct breakpoint *b1; |
c906108c | 6881 | |
346774a9 PA |
6882 | /* Add this breakpoint to the end of the chain so that a list of |
6883 | breakpoints will come out in order of increasing numbers. */ | |
6884 | ||
6885 | b1 = breakpoint_chain; | |
6886 | if (b1 == 0) | |
6887 | breakpoint_chain = b; | |
6888 | else | |
6889 | { | |
6890 | while (b1->next) | |
6891 | b1 = b1->next; | |
6892 | b1->next = b; | |
6893 | } | |
6894 | } | |
6895 | ||
6896 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
6897 | ||
6898 | static void | |
6899 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
6900 | struct gdbarch *gdbarch, | |
28010a5d | 6901 | enum bptype bptype, |
c0a91b2b | 6902 | const struct breakpoint_ops *ops) |
346774a9 | 6903 | { |
c906108c | 6904 | memset (b, 0, sizeof (*b)); |
2219d63c | 6905 | |
348d480f PA |
6906 | gdb_assert (ops != NULL); |
6907 | ||
28010a5d | 6908 | b->ops = ops; |
4d28f7a8 | 6909 | b->type = bptype; |
a6d9a66e | 6910 | b->gdbarch = gdbarch; |
c906108c SS |
6911 | b->language = current_language->la_language; |
6912 | b->input_radix = input_radix; | |
6913 | b->thread = -1; | |
b5de0fa7 | 6914 | b->enable_state = bp_enabled; |
c906108c SS |
6915 | b->next = 0; |
6916 | b->silent = 0; | |
6917 | b->ignore_count = 0; | |
6918 | b->commands = NULL; | |
818dd999 | 6919 | b->frame_id = null_frame_id; |
0d381245 | 6920 | b->condition_not_parsed = 0; |
84f4c1fe | 6921 | b->py_bp_object = NULL; |
d0fb5eae | 6922 | b->related_breakpoint = b; |
346774a9 PA |
6923 | } |
6924 | ||
6925 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
6926 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
6927 | |
6928 | static struct breakpoint * | |
6929 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 6930 | enum bptype bptype, |
c0a91b2b | 6931 | const struct breakpoint_ops *ops) |
346774a9 PA |
6932 | { |
6933 | struct breakpoint *b = XNEW (struct breakpoint); | |
6934 | ||
348d480f | 6935 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
c56053d2 | 6936 | add_to_breakpoint_chain (b); |
0d381245 VP |
6937 | return b; |
6938 | } | |
6939 | ||
0e30163f JK |
6940 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
6941 | resolutions should be made as the user specified the location explicitly | |
6942 | enough. */ | |
6943 | ||
0d381245 | 6944 | static void |
0e30163f | 6945 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 6946 | { |
2bdf28a0 JK |
6947 | gdb_assert (loc->owner != NULL); |
6948 | ||
0d381245 | 6949 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 6950 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 6951 | || is_tracepoint (loc->owner)) |
0d381245 | 6952 | { |
0e30163f | 6953 | int is_gnu_ifunc; |
2c02bd72 | 6954 | const char *function_name; |
6a3a010b | 6955 | CORE_ADDR func_addr; |
0e30163f | 6956 | |
2c02bd72 | 6957 | find_pc_partial_function_gnu_ifunc (loc->address, &function_name, |
6a3a010b | 6958 | &func_addr, NULL, &is_gnu_ifunc); |
0e30163f JK |
6959 | |
6960 | if (is_gnu_ifunc && !explicit_loc) | |
6961 | { | |
6962 | struct breakpoint *b = loc->owner; | |
6963 | ||
6964 | gdb_assert (loc->pspace == current_program_space); | |
2c02bd72 | 6965 | if (gnu_ifunc_resolve_name (function_name, |
0e30163f JK |
6966 | &loc->requested_address)) |
6967 | { | |
6968 | /* Recalculate ADDRESS based on new REQUESTED_ADDRESS. */ | |
6969 | loc->address = adjust_breakpoint_address (loc->gdbarch, | |
6970 | loc->requested_address, | |
6971 | b->type); | |
6972 | } | |
6973 | else if (b->type == bp_breakpoint && b->loc == loc | |
6974 | && loc->next == NULL && b->related_breakpoint == b) | |
6975 | { | |
6976 | /* Create only the whole new breakpoint of this type but do not | |
6977 | mess more complicated breakpoints with multiple locations. */ | |
6978 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b MR |
6979 | /* Remember the resolver's address for use by the return |
6980 | breakpoint. */ | |
6981 | loc->related_address = func_addr; | |
0e30163f JK |
6982 | } |
6983 | } | |
6984 | ||
2c02bd72 DE |
6985 | if (function_name) |
6986 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
6987 | } |
6988 | } | |
6989 | ||
a6d9a66e | 6990 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 6991 | struct gdbarch * |
a6d9a66e UW |
6992 | get_sal_arch (struct symtab_and_line sal) |
6993 | { | |
6994 | if (sal.section) | |
6995 | return get_objfile_arch (sal.section->objfile); | |
6996 | if (sal.symtab) | |
6997 | return get_objfile_arch (sal.symtab->objfile); | |
6998 | ||
6999 | return NULL; | |
7000 | } | |
7001 | ||
346774a9 PA |
7002 | /* Low level routine for partially initializing a breakpoint of type |
7003 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7004 | file name, and line number are provided by SAL. |
0d381245 VP |
7005 | |
7006 | It is expected that the caller will complete the initialization of | |
7007 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7008 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7009 | |
346774a9 PA |
7010 | static void |
7011 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7012 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7013 | const struct breakpoint_ops *ops) |
0d381245 | 7014 | { |
28010a5d | 7015 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7016 | |
3742cc8b | 7017 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7018 | |
6c95b8df PA |
7019 | if (bptype != bp_catchpoint) |
7020 | gdb_assert (sal.pspace != NULL); | |
7021 | ||
f8eba3c6 TT |
7022 | /* Store the program space that was used to set the breakpoint, |
7023 | except for ordinary breakpoints, which are independent of the | |
7024 | program space. */ | |
7025 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7026 | b->pspace = sal.pspace; | |
0d381245 | 7027 | |
ef37bb07 | 7028 | annotate_breakpoints_changed (); |
346774a9 | 7029 | } |
c906108c | 7030 | |
346774a9 PA |
7031 | /* set_raw_breakpoint is a low level routine for allocating and |
7032 | partially initializing a breakpoint of type BPTYPE. The newly | |
7033 | created breakpoint's address, section, source file name, and line | |
7034 | number are provided by SAL. The newly created and partially | |
7035 | initialized breakpoint is added to the breakpoint chain and | |
7036 | is also returned as the value of this function. | |
7037 | ||
7038 | It is expected that the caller will complete the initialization of | |
7039 | the newly created breakpoint struct as well as output any status | |
7040 | information regarding the creation of a new breakpoint. In | |
7041 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7042 | number! Care should be taken to not allow an error to occur | |
7043 | prior to completing the initialization of the breakpoint. If this | |
7044 | should happen, a bogus breakpoint will be left on the chain. */ | |
7045 | ||
7046 | struct breakpoint * | |
7047 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7048 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7049 | const struct breakpoint_ops *ops) |
346774a9 PA |
7050 | { |
7051 | struct breakpoint *b = XNEW (struct breakpoint); | |
7052 | ||
348d480f | 7053 | init_raw_breakpoint (b, gdbarch, sal, bptype, ops); |
c56053d2 | 7054 | add_to_breakpoint_chain (b); |
c906108c SS |
7055 | return b; |
7056 | } | |
7057 | ||
c2c6d25f JM |
7058 | |
7059 | /* Note that the breakpoint object B describes a permanent breakpoint | |
7060 | instruction, hard-wired into the inferior's code. */ | |
7061 | void | |
7062 | make_breakpoint_permanent (struct breakpoint *b) | |
7063 | { | |
0d381245 | 7064 | struct bp_location *bl; |
cc59ec59 | 7065 | |
b5de0fa7 | 7066 | b->enable_state = bp_permanent; |
c2c6d25f | 7067 | |
4a64f543 MS |
7068 | /* By definition, permanent breakpoints are already present in the |
7069 | code. Mark all locations as inserted. For now, | |
7070 | make_breakpoint_permanent is called in just one place, so it's | |
7071 | hard to say if it's reasonable to have permanent breakpoint with | |
e5dd4106 | 7072 | multiple locations or not, but it's easy to implement. */ |
0d381245 VP |
7073 | for (bl = b->loc; bl; bl = bl->next) |
7074 | bl->inserted = 1; | |
c2c6d25f JM |
7075 | } |
7076 | ||
53a5351d | 7077 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7078 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7079 | initiated the operation. */ | |
c906108c SS |
7080 | |
7081 | void | |
186c406b | 7082 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7083 | { |
35df4500 | 7084 | struct breakpoint *b, *b_tmp; |
186c406b | 7085 | int thread = tp->num; |
0fd8e87f UW |
7086 | |
7087 | /* To avoid having to rescan all objfile symbols at every step, | |
7088 | we maintain a list of continually-inserted but always disabled | |
7089 | longjmp "master" breakpoints. Here, we simply create momentary | |
7090 | clones of those and enable them for the requested thread. */ | |
35df4500 | 7091 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 7092 | if (b->pspace == current_program_space |
186c406b TT |
7093 | && (b->type == bp_longjmp_master |
7094 | || b->type == bp_exception_master)) | |
0fd8e87f | 7095 | { |
06edf0c0 PA |
7096 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7097 | struct breakpoint *clone; | |
cc59ec59 | 7098 | |
e2e4d78b JK |
7099 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7100 | after their removal. */ | |
06edf0c0 | 7101 | clone = momentary_breakpoint_from_master (b, type, |
e2e4d78b | 7102 | &longjmp_breakpoint_ops); |
0fd8e87f UW |
7103 | clone->thread = thread; |
7104 | } | |
186c406b TT |
7105 | |
7106 | tp->initiating_frame = frame; | |
c906108c SS |
7107 | } |
7108 | ||
611c83ae | 7109 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7110 | void |
611c83ae | 7111 | delete_longjmp_breakpoint (int thread) |
c906108c | 7112 | { |
35df4500 | 7113 | struct breakpoint *b, *b_tmp; |
c906108c | 7114 | |
35df4500 | 7115 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 7116 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7117 | { |
7118 | if (b->thread == thread) | |
7119 | delete_breakpoint (b); | |
7120 | } | |
c906108c SS |
7121 | } |
7122 | ||
f59f708a PA |
7123 | void |
7124 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7125 | { | |
7126 | struct breakpoint *b, *b_tmp; | |
7127 | ||
7128 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7129 | if (b->type == bp_longjmp || b->type == bp_exception) | |
7130 | { | |
7131 | if (b->thread == thread) | |
7132 | b->disposition = disp_del_at_next_stop; | |
7133 | } | |
7134 | } | |
7135 | ||
e2e4d78b JK |
7136 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7137 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7138 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7139 | breakpoints. */ | |
7140 | ||
7141 | struct breakpoint * | |
7142 | set_longjmp_breakpoint_for_call_dummy (void) | |
7143 | { | |
7144 | struct breakpoint *b, *retval = NULL; | |
7145 | ||
7146 | ALL_BREAKPOINTS (b) | |
7147 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
7148 | { | |
7149 | struct breakpoint *new_b; | |
7150 | ||
7151 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
7152 | &momentary_breakpoint_ops); | |
7153 | new_b->thread = pid_to_thread_id (inferior_ptid); | |
7154 | ||
7155 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7156 | ||
7157 | gdb_assert (new_b->related_breakpoint == new_b); | |
7158 | if (retval == NULL) | |
7159 | retval = new_b; | |
7160 | new_b->related_breakpoint = retval; | |
7161 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7162 | retval = retval->related_breakpoint; | |
7163 | retval->related_breakpoint = new_b; | |
7164 | } | |
7165 | ||
7166 | return retval; | |
7167 | } | |
7168 | ||
7169 | /* Verify all existing dummy frames and their associated breakpoints for | |
7170 | THREAD. Remove those which can no longer be found in the current frame | |
7171 | stack. | |
7172 | ||
7173 | You should call this function only at places where it is safe to currently | |
7174 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7175 | frames. */ | |
7176 | ||
7177 | void | |
7178 | check_longjmp_breakpoint_for_call_dummy (int thread) | |
7179 | { | |
7180 | struct breakpoint *b, *b_tmp; | |
7181 | ||
7182 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7183 | if (b->type == bp_longjmp_call_dummy && b->thread == thread) | |
7184 | { | |
7185 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7186 | ||
7187 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7188 | dummy_b = dummy_b->related_breakpoint; | |
7189 | if (dummy_b->type != bp_call_dummy | |
7190 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7191 | continue; | |
7192 | ||
7193 | dummy_frame_discard (dummy_b->frame_id); | |
7194 | ||
7195 | while (b->related_breakpoint != b) | |
7196 | { | |
7197 | if (b_tmp == b->related_breakpoint) | |
7198 | b_tmp = b->related_breakpoint->next; | |
7199 | delete_breakpoint (b->related_breakpoint); | |
7200 | } | |
7201 | delete_breakpoint (b); | |
7202 | } | |
7203 | } | |
7204 | ||
1900040c MS |
7205 | void |
7206 | enable_overlay_breakpoints (void) | |
7207 | { | |
52f0bd74 | 7208 | struct breakpoint *b; |
1900040c MS |
7209 | |
7210 | ALL_BREAKPOINTS (b) | |
7211 | if (b->type == bp_overlay_event) | |
7212 | { | |
7213 | b->enable_state = bp_enabled; | |
b60e7edf | 7214 | update_global_location_list (1); |
c02f5703 | 7215 | overlay_events_enabled = 1; |
1900040c MS |
7216 | } |
7217 | } | |
7218 | ||
7219 | void | |
7220 | disable_overlay_breakpoints (void) | |
7221 | { | |
52f0bd74 | 7222 | struct breakpoint *b; |
1900040c MS |
7223 | |
7224 | ALL_BREAKPOINTS (b) | |
7225 | if (b->type == bp_overlay_event) | |
7226 | { | |
7227 | b->enable_state = bp_disabled; | |
b60e7edf | 7228 | update_global_location_list (0); |
c02f5703 | 7229 | overlay_events_enabled = 0; |
1900040c MS |
7230 | } |
7231 | } | |
7232 | ||
aa7d318d TT |
7233 | /* Set an active std::terminate breakpoint for each std::terminate |
7234 | master breakpoint. */ | |
7235 | void | |
7236 | set_std_terminate_breakpoint (void) | |
7237 | { | |
35df4500 | 7238 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7239 | |
35df4500 | 7240 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7241 | if (b->pspace == current_program_space |
7242 | && b->type == bp_std_terminate_master) | |
7243 | { | |
06edf0c0 PA |
7244 | momentary_breakpoint_from_master (b, bp_std_terminate, |
7245 | &momentary_breakpoint_ops); | |
aa7d318d TT |
7246 | } |
7247 | } | |
7248 | ||
7249 | /* Delete all the std::terminate breakpoints. */ | |
7250 | void | |
7251 | delete_std_terminate_breakpoint (void) | |
7252 | { | |
35df4500 | 7253 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7254 | |
35df4500 | 7255 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7256 | if (b->type == bp_std_terminate) |
7257 | delete_breakpoint (b); | |
7258 | } | |
7259 | ||
c4093a6a | 7260 | struct breakpoint * |
a6d9a66e | 7261 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7262 | { |
7263 | struct breakpoint *b; | |
c4093a6a | 7264 | |
06edf0c0 PA |
7265 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7266 | &internal_breakpoint_ops); | |
7267 | ||
b5de0fa7 | 7268 | b->enable_state = bp_enabled; |
c4093a6a | 7269 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5af949e3 UW |
7270 | b->addr_string |
7271 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
c4093a6a | 7272 | |
b60e7edf | 7273 | update_global_location_list_nothrow (1); |
74960c60 | 7274 | |
c4093a6a JM |
7275 | return b; |
7276 | } | |
7277 | ||
7278 | void | |
7279 | remove_thread_event_breakpoints (void) | |
7280 | { | |
35df4500 | 7281 | struct breakpoint *b, *b_tmp; |
c4093a6a | 7282 | |
35df4500 | 7283 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7284 | if (b->type == bp_thread_event |
7285 | && b->loc->pspace == current_program_space) | |
c4093a6a JM |
7286 | delete_breakpoint (b); |
7287 | } | |
7288 | ||
0101ce28 JJ |
7289 | struct lang_and_radix |
7290 | { | |
7291 | enum language lang; | |
7292 | int radix; | |
7293 | }; | |
7294 | ||
4efc6507 DE |
7295 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7296 | ||
7297 | struct breakpoint * | |
7298 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7299 | { | |
7300 | struct breakpoint *b; | |
7301 | ||
06edf0c0 PA |
7302 | b = create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7303 | &internal_breakpoint_ops); | |
4efc6507 DE |
7304 | update_global_location_list_nothrow (1); |
7305 | return b; | |
7306 | } | |
0101ce28 | 7307 | |
03673fc7 PP |
7308 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7309 | ||
7310 | void | |
7311 | remove_jit_event_breakpoints (void) | |
7312 | { | |
7313 | struct breakpoint *b, *b_tmp; | |
7314 | ||
7315 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7316 | if (b->type == bp_jit_event | |
7317 | && b->loc->pspace == current_program_space) | |
7318 | delete_breakpoint (b); | |
7319 | } | |
7320 | ||
cae688ec JJ |
7321 | void |
7322 | remove_solib_event_breakpoints (void) | |
7323 | { | |
35df4500 | 7324 | struct breakpoint *b, *b_tmp; |
cae688ec | 7325 | |
35df4500 | 7326 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7327 | if (b->type == bp_shlib_event |
7328 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7329 | delete_breakpoint (b); |
7330 | } | |
7331 | ||
7332 | struct breakpoint * | |
a6d9a66e | 7333 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
cae688ec JJ |
7334 | { |
7335 | struct breakpoint *b; | |
7336 | ||
06edf0c0 PA |
7337 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7338 | &internal_breakpoint_ops); | |
b60e7edf | 7339 | update_global_location_list_nothrow (1); |
cae688ec JJ |
7340 | return b; |
7341 | } | |
7342 | ||
7343 | /* Disable any breakpoints that are on code in shared libraries. Only | |
7344 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7345 | ||
7346 | void | |
cb851954 | 7347 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7348 | { |
876fa593 | 7349 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7350 | |
876fa593 | 7351 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7352 | { |
2bdf28a0 | 7353 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7354 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7355 | |
4a64f543 MS |
7356 | /* We apply the check to all breakpoints, including disabled for |
7357 | those with loc->duplicate set. This is so that when breakpoint | |
7358 | becomes enabled, or the duplicate is removed, gdb will try to | |
7359 | insert all breakpoints. If we don't set shlib_disabled here, | |
7360 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7361 | if (((b->type == bp_breakpoint) |
508ccb1f | 7362 | || (b->type == bp_jit_event) |
1042e4c0 | 7363 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7364 | || (is_tracepoint (b))) |
6c95b8df | 7365 | && loc->pspace == current_program_space |
0d381245 | 7366 | && !loc->shlib_disabled |
a77053c2 | 7367 | #ifdef PC_SOLIB |
0d381245 | 7368 | && PC_SOLIB (loc->address) |
a77053c2 | 7369 | #else |
6c95b8df | 7370 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 MK |
7371 | #endif |
7372 | ) | |
0d381245 VP |
7373 | { |
7374 | loc->shlib_disabled = 1; | |
7375 | } | |
cae688ec JJ |
7376 | } |
7377 | } | |
7378 | ||
1e4d1764 YQ |
7379 | /* Disable any breakpoints and tracepoints that are in an unloaded shared |
7380 | library. Only apply to enabled breakpoints, disabled ones can just stay | |
4a64f543 | 7381 | disabled. */ |
84acb35a | 7382 | |
75149521 | 7383 | static void |
84acb35a JJ |
7384 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7385 | { | |
876fa593 | 7386 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7387 | int disabled_shlib_breaks = 0; |
7388 | ||
c86cf029 VP |
7389 | /* SunOS a.out shared libraries are always mapped, so do not |
7390 | disable breakpoints; they will only be reported as unloaded | |
7391 | through clear_solib when GDB discards its shared library | |
7392 | list. See clear_solib for more information. */ | |
7393 | if (exec_bfd != NULL | |
7394 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
7395 | return; | |
7396 | ||
876fa593 | 7397 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7398 | { |
2bdf28a0 | 7399 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7400 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7401 | |
1e4d1764 | 7402 | if (solib->pspace == loc->pspace |
e2dd7057 | 7403 | && !loc->shlib_disabled |
1e4d1764 YQ |
7404 | && (((b->type == bp_breakpoint |
7405 | || b->type == bp_jit_event | |
7406 | || b->type == bp_hardware_breakpoint) | |
7407 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7408 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7409 | || is_tracepoint (b)) | |
e2dd7057 | 7410 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7411 | { |
e2dd7057 PP |
7412 | loc->shlib_disabled = 1; |
7413 | /* At this point, we cannot rely on remove_breakpoint | |
7414 | succeeding so we must mark the breakpoint as not inserted | |
7415 | to prevent future errors occurring in remove_breakpoints. */ | |
7416 | loc->inserted = 0; | |
8d3788bd VP |
7417 | |
7418 | /* This may cause duplicate notifications for the same breakpoint. */ | |
7419 | observer_notify_breakpoint_modified (b); | |
7420 | ||
e2dd7057 PP |
7421 | if (!disabled_shlib_breaks) |
7422 | { | |
7423 | target_terminal_ours_for_output (); | |
3e43a32a MS |
7424 | warning (_("Temporarily disabling breakpoints " |
7425 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7426 | solib->so_name); |
84acb35a | 7427 | } |
e2dd7057 | 7428 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7429 | } |
7430 | } | |
84acb35a JJ |
7431 | } |
7432 | ||
ce78b96d JB |
7433 | /* FORK & VFORK catchpoints. */ |
7434 | ||
e29a4733 PA |
7435 | /* An instance of this type is used to represent a fork or vfork |
7436 | catchpoint. It includes a "struct breakpoint" as a kind of base | |
7437 | class; users downcast to "struct breakpoint *" when needed. A | |
7438 | breakpoint is really of this type iff its ops pointer points to | |
7439 | CATCH_FORK_BREAKPOINT_OPS. */ | |
7440 | ||
7441 | struct fork_catchpoint | |
7442 | { | |
7443 | /* The base class. */ | |
7444 | struct breakpoint base; | |
7445 | ||
7446 | /* Process id of a child process whose forking triggered this | |
7447 | catchpoint. This field is only valid immediately after this | |
7448 | catchpoint has triggered. */ | |
7449 | ptid_t forked_inferior_pid; | |
7450 | }; | |
7451 | ||
4a64f543 MS |
7452 | /* Implement the "insert" breakpoint_ops method for fork |
7453 | catchpoints. */ | |
ce78b96d | 7454 | |
77b06cd7 TJB |
7455 | static int |
7456 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7457 | { |
77b06cd7 | 7458 | return target_insert_fork_catchpoint (PIDGET (inferior_ptid)); |
ce78b96d JB |
7459 | } |
7460 | ||
4a64f543 MS |
7461 | /* Implement the "remove" breakpoint_ops method for fork |
7462 | catchpoints. */ | |
ce78b96d JB |
7463 | |
7464 | static int | |
77b06cd7 | 7465 | remove_catch_fork (struct bp_location *bl) |
ce78b96d JB |
7466 | { |
7467 | return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); | |
7468 | } | |
7469 | ||
7470 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7471 | catchpoints. */ | |
7472 | ||
7473 | static int | |
f1310107 | 7474 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
09ac7c10 TT |
7475 | struct address_space *aspace, CORE_ADDR bp_addr, |
7476 | const struct target_waitstatus *ws) | |
ce78b96d | 7477 | { |
e29a4733 PA |
7478 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7479 | ||
f90263c1 TT |
7480 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7481 | return 0; | |
7482 | ||
7483 | c->forked_inferior_pid = ws->value.related_pid; | |
7484 | return 1; | |
ce78b96d JB |
7485 | } |
7486 | ||
4a64f543 MS |
7487 | /* Implement the "print_it" breakpoint_ops method for fork |
7488 | catchpoints. */ | |
ce78b96d JB |
7489 | |
7490 | static enum print_stop_action | |
348d480f | 7491 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7492 | { |
36dfb11c | 7493 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7494 | struct breakpoint *b = bs->breakpoint_at; |
7495 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7496 | |
ce78b96d | 7497 | annotate_catchpoint (b->number); |
36dfb11c TT |
7498 | if (b->disposition == disp_del) |
7499 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
7500 | else | |
7501 | ui_out_text (uiout, "\nCatchpoint "); | |
7502 | if (ui_out_is_mi_like_p (uiout)) | |
7503 | { | |
7504 | ui_out_field_string (uiout, "reason", | |
7505 | async_reason_lookup (EXEC_ASYNC_FORK)); | |
7506 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
7507 | } | |
7508 | ui_out_field_int (uiout, "bkptno", b->number); | |
7509 | ui_out_text (uiout, " (forked process "); | |
7510 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7511 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
7512 | return PRINT_SRC_AND_LOC; |
7513 | } | |
7514 | ||
4a64f543 MS |
7515 | /* Implement the "print_one" breakpoint_ops method for fork |
7516 | catchpoints. */ | |
ce78b96d JB |
7517 | |
7518 | static void | |
a6d9a66e | 7519 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7520 | { |
e29a4733 | 7521 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7522 | struct value_print_options opts; |
79a45e25 | 7523 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7524 | |
7525 | get_user_print_options (&opts); | |
7526 | ||
4a64f543 MS |
7527 | /* Field 4, the address, is omitted (which makes the columns not |
7528 | line up too nicely with the headers, but the effect is relatively | |
7529 | readable). */ | |
79a45b7d | 7530 | if (opts.addressprint) |
ce78b96d JB |
7531 | ui_out_field_skip (uiout, "addr"); |
7532 | annotate_field (5); | |
7533 | ui_out_text (uiout, "fork"); | |
e29a4733 | 7534 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
7535 | { |
7536 | ui_out_text (uiout, ", process "); | |
7537 | ui_out_field_int (uiout, "what", | |
e29a4733 | 7538 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
7539 | ui_out_spaces (uiout, 1); |
7540 | } | |
7541 | } | |
7542 | ||
7543 | /* Implement the "print_mention" breakpoint_ops method for fork | |
7544 | catchpoints. */ | |
7545 | ||
7546 | static void | |
7547 | print_mention_catch_fork (struct breakpoint *b) | |
7548 | { | |
7549 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
7550 | } | |
7551 | ||
6149aea9 PA |
7552 | /* Implement the "print_recreate" breakpoint_ops method for fork |
7553 | catchpoints. */ | |
7554 | ||
7555 | static void | |
7556 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
7557 | { | |
7558 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 7559 | print_recreate_thread (b, fp); |
6149aea9 PA |
7560 | } |
7561 | ||
ce78b96d JB |
7562 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
7563 | ||
2060206e | 7564 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 7565 | |
4a64f543 MS |
7566 | /* Implement the "insert" breakpoint_ops method for vfork |
7567 | catchpoints. */ | |
ce78b96d | 7568 | |
77b06cd7 TJB |
7569 | static int |
7570 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 7571 | { |
77b06cd7 | 7572 | return target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); |
ce78b96d JB |
7573 | } |
7574 | ||
4a64f543 MS |
7575 | /* Implement the "remove" breakpoint_ops method for vfork |
7576 | catchpoints. */ | |
ce78b96d JB |
7577 | |
7578 | static int | |
77b06cd7 | 7579 | remove_catch_vfork (struct bp_location *bl) |
ce78b96d JB |
7580 | { |
7581 | return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); | |
7582 | } | |
7583 | ||
7584 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
7585 | catchpoints. */ | |
7586 | ||
7587 | static int | |
f1310107 | 7588 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
09ac7c10 TT |
7589 | struct address_space *aspace, CORE_ADDR bp_addr, |
7590 | const struct target_waitstatus *ws) | |
ce78b96d | 7591 | { |
e29a4733 PA |
7592 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7593 | ||
f90263c1 TT |
7594 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
7595 | return 0; | |
7596 | ||
7597 | c->forked_inferior_pid = ws->value.related_pid; | |
7598 | return 1; | |
ce78b96d JB |
7599 | } |
7600 | ||
4a64f543 MS |
7601 | /* Implement the "print_it" breakpoint_ops method for vfork |
7602 | catchpoints. */ | |
ce78b96d JB |
7603 | |
7604 | static enum print_stop_action | |
348d480f | 7605 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 7606 | { |
36dfb11c | 7607 | struct ui_out *uiout = current_uiout; |
348d480f | 7608 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
7609 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
7610 | ||
ce78b96d | 7611 | annotate_catchpoint (b->number); |
36dfb11c TT |
7612 | if (b->disposition == disp_del) |
7613 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
7614 | else | |
7615 | ui_out_text (uiout, "\nCatchpoint "); | |
7616 | if (ui_out_is_mi_like_p (uiout)) | |
7617 | { | |
7618 | ui_out_field_string (uiout, "reason", | |
7619 | async_reason_lookup (EXEC_ASYNC_VFORK)); | |
7620 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
7621 | } | |
7622 | ui_out_field_int (uiout, "bkptno", b->number); | |
7623 | ui_out_text (uiout, " (vforked process "); | |
7624 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7625 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
7626 | return PRINT_SRC_AND_LOC; |
7627 | } | |
7628 | ||
4a64f543 MS |
7629 | /* Implement the "print_one" breakpoint_ops method for vfork |
7630 | catchpoints. */ | |
ce78b96d JB |
7631 | |
7632 | static void | |
a6d9a66e | 7633 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7634 | { |
e29a4733 | 7635 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7636 | struct value_print_options opts; |
79a45e25 | 7637 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7638 | |
7639 | get_user_print_options (&opts); | |
4a64f543 MS |
7640 | /* Field 4, the address, is omitted (which makes the columns not |
7641 | line up too nicely with the headers, but the effect is relatively | |
7642 | readable). */ | |
79a45b7d | 7643 | if (opts.addressprint) |
ce78b96d JB |
7644 | ui_out_field_skip (uiout, "addr"); |
7645 | annotate_field (5); | |
7646 | ui_out_text (uiout, "vfork"); | |
e29a4733 | 7647 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
7648 | { |
7649 | ui_out_text (uiout, ", process "); | |
7650 | ui_out_field_int (uiout, "what", | |
e29a4733 | 7651 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
7652 | ui_out_spaces (uiout, 1); |
7653 | } | |
7654 | } | |
7655 | ||
7656 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
7657 | catchpoints. */ | |
7658 | ||
7659 | static void | |
7660 | print_mention_catch_vfork (struct breakpoint *b) | |
7661 | { | |
7662 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
7663 | } | |
7664 | ||
6149aea9 PA |
7665 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
7666 | catchpoints. */ | |
7667 | ||
7668 | static void | |
7669 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
7670 | { | |
7671 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 7672 | print_recreate_thread (b, fp); |
6149aea9 PA |
7673 | } |
7674 | ||
ce78b96d JB |
7675 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
7676 | ||
2060206e | 7677 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 7678 | |
edcc5120 TT |
7679 | /* An instance of this type is used to represent an solib catchpoint. |
7680 | It includes a "struct breakpoint" as a kind of base class; users | |
7681 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
7682 | really of this type iff its ops pointer points to | |
7683 | CATCH_SOLIB_BREAKPOINT_OPS. */ | |
7684 | ||
7685 | struct solib_catchpoint | |
7686 | { | |
7687 | /* The base class. */ | |
7688 | struct breakpoint base; | |
7689 | ||
7690 | /* True for "catch load", false for "catch unload". */ | |
7691 | unsigned char is_load; | |
7692 | ||
7693 | /* Regular expression to match, if any. COMPILED is only valid when | |
7694 | REGEX is non-NULL. */ | |
7695 | char *regex; | |
7696 | regex_t compiled; | |
7697 | }; | |
7698 | ||
7699 | static void | |
7700 | dtor_catch_solib (struct breakpoint *b) | |
7701 | { | |
7702 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7703 | ||
7704 | if (self->regex) | |
7705 | regfree (&self->compiled); | |
7706 | xfree (self->regex); | |
7707 | ||
7708 | base_breakpoint_ops.dtor (b); | |
7709 | } | |
7710 | ||
7711 | static int | |
7712 | insert_catch_solib (struct bp_location *ignore) | |
7713 | { | |
7714 | return 0; | |
7715 | } | |
7716 | ||
7717 | static int | |
7718 | remove_catch_solib (struct bp_location *ignore) | |
7719 | { | |
7720 | return 0; | |
7721 | } | |
7722 | ||
7723 | static int | |
7724 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
7725 | struct address_space *aspace, | |
7726 | CORE_ADDR bp_addr, | |
7727 | const struct target_waitstatus *ws) | |
7728 | { | |
7729 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
7730 | struct breakpoint *other; | |
7731 | ||
7732 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
7733 | return 1; | |
7734 | ||
7735 | ALL_BREAKPOINTS (other) | |
7736 | { | |
7737 | struct bp_location *other_bl; | |
7738 | ||
7739 | if (other == bl->owner) | |
7740 | continue; | |
7741 | ||
7742 | if (other->type != bp_shlib_event) | |
7743 | continue; | |
7744 | ||
7745 | if (self->base.pspace != NULL && other->pspace != self->base.pspace) | |
7746 | continue; | |
7747 | ||
7748 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
7749 | { | |
7750 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
7751 | return 1; | |
7752 | } | |
7753 | } | |
7754 | ||
7755 | return 0; | |
7756 | } | |
7757 | ||
7758 | static void | |
7759 | check_status_catch_solib (struct bpstats *bs) | |
7760 | { | |
7761 | struct solib_catchpoint *self | |
7762 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
7763 | int ix; | |
7764 | ||
7765 | if (self->is_load) | |
7766 | { | |
7767 | struct so_list *iter; | |
7768 | ||
7769 | for (ix = 0; | |
7770 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
7771 | ix, iter); | |
7772 | ++ix) | |
7773 | { | |
7774 | if (!self->regex | |
7775 | || regexec (&self->compiled, iter->so_name, 0, NULL, 0) == 0) | |
7776 | return; | |
7777 | } | |
7778 | } | |
7779 | else | |
7780 | { | |
7781 | char *iter; | |
7782 | ||
7783 | for (ix = 0; | |
7784 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
7785 | ix, iter); | |
7786 | ++ix) | |
7787 | { | |
7788 | if (!self->regex | |
7789 | || regexec (&self->compiled, iter, 0, NULL, 0) == 0) | |
7790 | return; | |
7791 | } | |
7792 | } | |
7793 | ||
7794 | bs->stop = 0; | |
7795 | bs->print_it = print_it_noop; | |
7796 | } | |
7797 | ||
7798 | static enum print_stop_action | |
7799 | print_it_catch_solib (bpstat bs) | |
7800 | { | |
7801 | struct breakpoint *b = bs->breakpoint_at; | |
7802 | struct ui_out *uiout = current_uiout; | |
7803 | ||
7804 | annotate_catchpoint (b->number); | |
7805 | if (b->disposition == disp_del) | |
7806 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
7807 | else | |
7808 | ui_out_text (uiout, "\nCatchpoint "); | |
7809 | ui_out_field_int (uiout, "bkptno", b->number); | |
7810 | ui_out_text (uiout, "\n"); | |
7811 | if (ui_out_is_mi_like_p (uiout)) | |
7812 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
7813 | print_solib_event (1); | |
7814 | return PRINT_SRC_AND_LOC; | |
7815 | } | |
7816 | ||
7817 | static void | |
7818 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
7819 | { | |
7820 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7821 | struct value_print_options opts; | |
7822 | struct ui_out *uiout = current_uiout; | |
7823 | char *msg; | |
7824 | ||
7825 | get_user_print_options (&opts); | |
7826 | /* Field 4, the address, is omitted (which makes the columns not | |
7827 | line up too nicely with the headers, but the effect is relatively | |
7828 | readable). */ | |
7829 | if (opts.addressprint) | |
7830 | { | |
7831 | annotate_field (4); | |
7832 | ui_out_field_skip (uiout, "addr"); | |
7833 | } | |
7834 | ||
7835 | annotate_field (5); | |
7836 | if (self->is_load) | |
7837 | { | |
7838 | if (self->regex) | |
7839 | msg = xstrprintf (_("load of library matching %s"), self->regex); | |
7840 | else | |
7841 | msg = xstrdup (_("load of library")); | |
7842 | } | |
7843 | else | |
7844 | { | |
7845 | if (self->regex) | |
7846 | msg = xstrprintf (_("unload of library matching %s"), self->regex); | |
7847 | else | |
7848 | msg = xstrdup (_("unload of library")); | |
7849 | } | |
7850 | ui_out_field_string (uiout, "what", msg); | |
7851 | xfree (msg); | |
7852 | } | |
7853 | ||
7854 | static void | |
7855 | print_mention_catch_solib (struct breakpoint *b) | |
7856 | { | |
7857 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7858 | ||
7859 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
7860 | self->is_load ? "load" : "unload"); | |
7861 | } | |
7862 | ||
7863 | static void | |
7864 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
7865 | { | |
7866 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7867 | ||
7868 | fprintf_unfiltered (fp, "%s %s", | |
7869 | b->disposition == disp_del ? "tcatch" : "catch", | |
7870 | self->is_load ? "load" : "unload"); | |
7871 | if (self->regex) | |
7872 | fprintf_unfiltered (fp, " %s", self->regex); | |
7873 | fprintf_unfiltered (fp, "\n"); | |
7874 | } | |
7875 | ||
7876 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
7877 | ||
91985142 MG |
7878 | /* Shared helper function (MI and CLI) for creating and installing |
7879 | a shared object event catchpoint. If IS_LOAD is non-zero then | |
7880 | the events to be caught are load events, otherwise they are | |
7881 | unload events. If IS_TEMP is non-zero the catchpoint is a | |
7882 | temporary one. If ENABLED is non-zero the catchpoint is | |
7883 | created in an enabled state. */ | |
edcc5120 | 7884 | |
91985142 MG |
7885 | void |
7886 | add_solib_catchpoint (char *arg, int is_load, int is_temp, int enabled) | |
edcc5120 TT |
7887 | { |
7888 | struct solib_catchpoint *c; | |
7889 | struct gdbarch *gdbarch = get_current_arch (); | |
edcc5120 TT |
7890 | struct cleanup *cleanup; |
7891 | ||
edcc5120 TT |
7892 | if (!arg) |
7893 | arg = ""; | |
7894 | arg = skip_spaces (arg); | |
7895 | ||
7896 | c = XCNEW (struct solib_catchpoint); | |
7897 | cleanup = make_cleanup (xfree, c); | |
7898 | ||
7899 | if (*arg != '\0') | |
7900 | { | |
7901 | int errcode; | |
7902 | ||
7903 | errcode = regcomp (&c->compiled, arg, REG_NOSUB); | |
7904 | if (errcode != 0) | |
7905 | { | |
7906 | char *err = get_regcomp_error (errcode, &c->compiled); | |
7907 | ||
7908 | make_cleanup (xfree, err); | |
7909 | error (_("Invalid regexp (%s): %s"), err, arg); | |
7910 | } | |
7911 | c->regex = xstrdup (arg); | |
7912 | } | |
7913 | ||
7914 | c->is_load = is_load; | |
91985142 | 7915 | init_catchpoint (&c->base, gdbarch, is_temp, NULL, |
edcc5120 TT |
7916 | &catch_solib_breakpoint_ops); |
7917 | ||
91985142 MG |
7918 | c->base.enable_state = enabled ? bp_enabled : bp_disabled; |
7919 | ||
edcc5120 TT |
7920 | discard_cleanups (cleanup); |
7921 | install_breakpoint (0, &c->base, 1); | |
7922 | } | |
7923 | ||
91985142 MG |
7924 | /* A helper function that does all the work for "catch load" and |
7925 | "catch unload". */ | |
7926 | ||
7927 | static void | |
7928 | catch_load_or_unload (char *arg, int from_tty, int is_load, | |
7929 | struct cmd_list_element *command) | |
7930 | { | |
7931 | int tempflag; | |
7932 | const int enabled = 1; | |
7933 | ||
7934 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
7935 | ||
7936 | add_solib_catchpoint (arg, is_load, tempflag, enabled); | |
7937 | } | |
7938 | ||
edcc5120 TT |
7939 | static void |
7940 | catch_load_command_1 (char *arg, int from_tty, | |
7941 | struct cmd_list_element *command) | |
7942 | { | |
7943 | catch_load_or_unload (arg, from_tty, 1, command); | |
7944 | } | |
7945 | ||
7946 | static void | |
7947 | catch_unload_command_1 (char *arg, int from_tty, | |
7948 | struct cmd_list_element *command) | |
7949 | { | |
7950 | catch_load_or_unload (arg, from_tty, 0, command); | |
7951 | } | |
7952 | ||
fa3064dd YQ |
7953 | DEF_VEC_I(int); |
7954 | ||
be5c67c1 PA |
7955 | /* An instance of this type is used to represent a syscall catchpoint. |
7956 | It includes a "struct breakpoint" as a kind of base class; users | |
7957 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
7958 | really of this type iff its ops pointer points to | |
7959 | CATCH_SYSCALL_BREAKPOINT_OPS. */ | |
7960 | ||
7961 | struct syscall_catchpoint | |
7962 | { | |
7963 | /* The base class. */ | |
7964 | struct breakpoint base; | |
7965 | ||
7966 | /* Syscall numbers used for the 'catch syscall' feature. If no | |
7967 | syscall has been specified for filtering, its value is NULL. | |
7968 | Otherwise, it holds a list of all syscalls to be caught. The | |
7969 | list elements are allocated with xmalloc. */ | |
7970 | VEC(int) *syscalls_to_be_caught; | |
7971 | }; | |
7972 | ||
7973 | /* Implement the "dtor" breakpoint_ops method for syscall | |
7974 | catchpoints. */ | |
7975 | ||
7976 | static void | |
7977 | dtor_catch_syscall (struct breakpoint *b) | |
7978 | { | |
7979 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; | |
7980 | ||
7981 | VEC_free (int, c->syscalls_to_be_caught); | |
348d480f | 7982 | |
2060206e | 7983 | base_breakpoint_ops.dtor (b); |
be5c67c1 PA |
7984 | } |
7985 | ||
fa3064dd YQ |
7986 | static const struct inferior_data *catch_syscall_inferior_data = NULL; |
7987 | ||
7988 | struct catch_syscall_inferior_data | |
7989 | { | |
7990 | /* We keep a count of the number of times the user has requested a | |
7991 | particular syscall to be tracked, and pass this information to the | |
7992 | target. This lets capable targets implement filtering directly. */ | |
7993 | ||
7994 | /* Number of times that "any" syscall is requested. */ | |
7995 | int any_syscall_count; | |
7996 | ||
7997 | /* Count of each system call. */ | |
7998 | VEC(int) *syscalls_counts; | |
7999 | ||
8000 | /* This counts all syscall catch requests, so we can readily determine | |
8001 | if any catching is necessary. */ | |
8002 | int total_syscalls_count; | |
8003 | }; | |
8004 | ||
8005 | static struct catch_syscall_inferior_data* | |
8006 | get_catch_syscall_inferior_data (struct inferior *inf) | |
8007 | { | |
8008 | struct catch_syscall_inferior_data *inf_data; | |
8009 | ||
8010 | inf_data = inferior_data (inf, catch_syscall_inferior_data); | |
8011 | if (inf_data == NULL) | |
8012 | { | |
8013 | inf_data = XZALLOC (struct catch_syscall_inferior_data); | |
8014 | set_inferior_data (inf, catch_syscall_inferior_data, inf_data); | |
8015 | } | |
8016 | ||
8017 | return inf_data; | |
8018 | } | |
8019 | ||
8020 | static void | |
8021 | catch_syscall_inferior_data_cleanup (struct inferior *inf, void *arg) | |
8022 | { | |
8023 | xfree (arg); | |
8024 | } | |
8025 | ||
8026 | ||
a96d9b2e SDJ |
8027 | /* Implement the "insert" breakpoint_ops method for syscall |
8028 | catchpoints. */ | |
8029 | ||
77b06cd7 TJB |
8030 | static int |
8031 | insert_catch_syscall (struct bp_location *bl) | |
a96d9b2e | 8032 | { |
be5c67c1 | 8033 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner; |
a96d9b2e | 8034 | struct inferior *inf = current_inferior (); |
fa3064dd YQ |
8035 | struct catch_syscall_inferior_data *inf_data |
8036 | = get_catch_syscall_inferior_data (inf); | |
a96d9b2e | 8037 | |
fa3064dd | 8038 | ++inf_data->total_syscalls_count; |
be5c67c1 | 8039 | if (!c->syscalls_to_be_caught) |
fa3064dd | 8040 | ++inf_data->any_syscall_count; |
a96d9b2e SDJ |
8041 | else |
8042 | { | |
8043 | int i, iter; | |
cc59ec59 | 8044 | |
a96d9b2e | 8045 | for (i = 0; |
be5c67c1 | 8046 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8047 | i++) |
8048 | { | |
8049 | int elem; | |
cc59ec59 | 8050 | |
fa3064dd | 8051 | if (iter >= VEC_length (int, inf_data->syscalls_counts)) |
a96d9b2e | 8052 | { |
fa3064dd | 8053 | int old_size = VEC_length (int, inf_data->syscalls_counts); |
3e43a32a MS |
8054 | uintptr_t vec_addr_offset |
8055 | = old_size * ((uintptr_t) sizeof (int)); | |
a96d9b2e | 8056 | uintptr_t vec_addr; |
fa3064dd YQ |
8057 | VEC_safe_grow (int, inf_data->syscalls_counts, iter + 1); |
8058 | vec_addr = ((uintptr_t) VEC_address (int, | |
8059 | inf_data->syscalls_counts) | |
8060 | + vec_addr_offset); | |
a96d9b2e SDJ |
8061 | memset ((void *) vec_addr, 0, |
8062 | (iter + 1 - old_size) * sizeof (int)); | |
8063 | } | |
fa3064dd YQ |
8064 | elem = VEC_index (int, inf_data->syscalls_counts, iter); |
8065 | VEC_replace (int, inf_data->syscalls_counts, iter, ++elem); | |
a96d9b2e SDJ |
8066 | } |
8067 | } | |
8068 | ||
77b06cd7 | 8069 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), |
fa3064dd YQ |
8070 | inf_data->total_syscalls_count != 0, |
8071 | inf_data->any_syscall_count, | |
8072 | VEC_length (int, | |
8073 | inf_data->syscalls_counts), | |
8074 | VEC_address (int, | |
8075 | inf_data->syscalls_counts)); | |
a96d9b2e SDJ |
8076 | } |
8077 | ||
8078 | /* Implement the "remove" breakpoint_ops method for syscall | |
8079 | catchpoints. */ | |
8080 | ||
8081 | static int | |
77b06cd7 | 8082 | remove_catch_syscall (struct bp_location *bl) |
a96d9b2e | 8083 | { |
be5c67c1 | 8084 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner; |
a96d9b2e | 8085 | struct inferior *inf = current_inferior (); |
fa3064dd YQ |
8086 | struct catch_syscall_inferior_data *inf_data |
8087 | = get_catch_syscall_inferior_data (inf); | |
a96d9b2e | 8088 | |
fa3064dd | 8089 | --inf_data->total_syscalls_count; |
be5c67c1 | 8090 | if (!c->syscalls_to_be_caught) |
fa3064dd | 8091 | --inf_data->any_syscall_count; |
a96d9b2e SDJ |
8092 | else |
8093 | { | |
8094 | int i, iter; | |
cc59ec59 | 8095 | |
a96d9b2e | 8096 | for (i = 0; |
be5c67c1 | 8097 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8098 | i++) |
8099 | { | |
8100 | int elem; | |
fa3064dd | 8101 | if (iter >= VEC_length (int, inf_data->syscalls_counts)) |
a96d9b2e SDJ |
8102 | /* Shouldn't happen. */ |
8103 | continue; | |
fa3064dd YQ |
8104 | elem = VEC_index (int, inf_data->syscalls_counts, iter); |
8105 | VEC_replace (int, inf_data->syscalls_counts, iter, --elem); | |
a96d9b2e SDJ |
8106 | } |
8107 | } | |
8108 | ||
8109 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
fa3064dd YQ |
8110 | inf_data->total_syscalls_count != 0, |
8111 | inf_data->any_syscall_count, | |
8112 | VEC_length (int, | |
8113 | inf_data->syscalls_counts), | |
3e43a32a | 8114 | VEC_address (int, |
fa3064dd | 8115 | inf_data->syscalls_counts)); |
a96d9b2e SDJ |
8116 | } |
8117 | ||
8118 | /* Implement the "breakpoint_hit" breakpoint_ops method for syscall | |
8119 | catchpoints. */ | |
8120 | ||
8121 | static int | |
f1310107 | 8122 | breakpoint_hit_catch_syscall (const struct bp_location *bl, |
09ac7c10 TT |
8123 | struct address_space *aspace, CORE_ADDR bp_addr, |
8124 | const struct target_waitstatus *ws) | |
a96d9b2e | 8125 | { |
4a64f543 MS |
8126 | /* We must check if we are catching specific syscalls in this |
8127 | breakpoint. If we are, then we must guarantee that the called | |
8128 | syscall is the same syscall we are catching. */ | |
a96d9b2e | 8129 | int syscall_number = 0; |
be5c67c1 PA |
8130 | const struct syscall_catchpoint *c |
8131 | = (const struct syscall_catchpoint *) bl->owner; | |
a96d9b2e | 8132 | |
f90263c1 TT |
8133 | if (ws->kind != TARGET_WAITKIND_SYSCALL_ENTRY |
8134 | && ws->kind != TARGET_WAITKIND_SYSCALL_RETURN) | |
a96d9b2e SDJ |
8135 | return 0; |
8136 | ||
f90263c1 TT |
8137 | syscall_number = ws->value.syscall_number; |
8138 | ||
a96d9b2e | 8139 | /* Now, checking if the syscall is the same. */ |
be5c67c1 | 8140 | if (c->syscalls_to_be_caught) |
a96d9b2e SDJ |
8141 | { |
8142 | int i, iter; | |
cc59ec59 | 8143 | |
a96d9b2e | 8144 | for (i = 0; |
be5c67c1 | 8145 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8146 | i++) |
8147 | if (syscall_number == iter) | |
8148 | break; | |
8149 | /* Not the same. */ | |
8150 | if (!iter) | |
8151 | return 0; | |
8152 | } | |
8153 | ||
8154 | return 1; | |
8155 | } | |
8156 | ||
8157 | /* Implement the "print_it" breakpoint_ops method for syscall | |
8158 | catchpoints. */ | |
8159 | ||
8160 | static enum print_stop_action | |
348d480f | 8161 | print_it_catch_syscall (bpstat bs) |
a96d9b2e | 8162 | { |
36dfb11c | 8163 | struct ui_out *uiout = current_uiout; |
348d480f | 8164 | struct breakpoint *b = bs->breakpoint_at; |
a96d9b2e SDJ |
8165 | /* These are needed because we want to know in which state a |
8166 | syscall is. It can be in the TARGET_WAITKIND_SYSCALL_ENTRY | |
8167 | or TARGET_WAITKIND_SYSCALL_RETURN, and depending on it we | |
8168 | must print "called syscall" or "returned from syscall". */ | |
8169 | ptid_t ptid; | |
8170 | struct target_waitstatus last; | |
8171 | struct syscall s; | |
a96d9b2e SDJ |
8172 | |
8173 | get_last_target_status (&ptid, &last); | |
8174 | ||
8175 | get_syscall_by_number (last.value.syscall_number, &s); | |
8176 | ||
8177 | annotate_catchpoint (b->number); | |
8178 | ||
36dfb11c TT |
8179 | if (b->disposition == disp_del) |
8180 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
a96d9b2e | 8181 | else |
36dfb11c TT |
8182 | ui_out_text (uiout, "\nCatchpoint "); |
8183 | if (ui_out_is_mi_like_p (uiout)) | |
8184 | { | |
8185 | ui_out_field_string (uiout, "reason", | |
8186 | async_reason_lookup (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY | |
8187 | ? EXEC_ASYNC_SYSCALL_ENTRY | |
8188 | : EXEC_ASYNC_SYSCALL_RETURN)); | |
8189 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8190 | } | |
8191 | ui_out_field_int (uiout, "bkptno", b->number); | |
a96d9b2e SDJ |
8192 | |
8193 | if (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY) | |
36dfb11c TT |
8194 | ui_out_text (uiout, " (call to syscall "); |
8195 | else | |
8196 | ui_out_text (uiout, " (returned from syscall "); | |
a96d9b2e | 8197 | |
36dfb11c TT |
8198 | if (s.name == NULL || ui_out_is_mi_like_p (uiout)) |
8199 | ui_out_field_int (uiout, "syscall-number", last.value.syscall_number); | |
8200 | if (s.name != NULL) | |
8201 | ui_out_field_string (uiout, "syscall-name", s.name); | |
8202 | ||
8203 | ui_out_text (uiout, "), "); | |
a96d9b2e SDJ |
8204 | |
8205 | return PRINT_SRC_AND_LOC; | |
8206 | } | |
8207 | ||
8208 | /* Implement the "print_one" breakpoint_ops method for syscall | |
8209 | catchpoints. */ | |
8210 | ||
8211 | static void | |
8212 | print_one_catch_syscall (struct breakpoint *b, | |
f1310107 | 8213 | struct bp_location **last_loc) |
a96d9b2e | 8214 | { |
be5c67c1 | 8215 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
a96d9b2e | 8216 | struct value_print_options opts; |
79a45e25 | 8217 | struct ui_out *uiout = current_uiout; |
a96d9b2e SDJ |
8218 | |
8219 | get_user_print_options (&opts); | |
4a64f543 MS |
8220 | /* Field 4, the address, is omitted (which makes the columns not |
8221 | line up too nicely with the headers, but the effect is relatively | |
8222 | readable). */ | |
a96d9b2e SDJ |
8223 | if (opts.addressprint) |
8224 | ui_out_field_skip (uiout, "addr"); | |
8225 | annotate_field (5); | |
8226 | ||
be5c67c1 PA |
8227 | if (c->syscalls_to_be_caught |
8228 | && VEC_length (int, c->syscalls_to_be_caught) > 1) | |
a96d9b2e SDJ |
8229 | ui_out_text (uiout, "syscalls \""); |
8230 | else | |
8231 | ui_out_text (uiout, "syscall \""); | |
8232 | ||
be5c67c1 | 8233 | if (c->syscalls_to_be_caught) |
a96d9b2e SDJ |
8234 | { |
8235 | int i, iter; | |
8236 | char *text = xstrprintf ("%s", ""); | |
cc59ec59 | 8237 | |
a96d9b2e | 8238 | for (i = 0; |
be5c67c1 | 8239 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8240 | i++) |
8241 | { | |
8242 | char *x = text; | |
8243 | struct syscall s; | |
8244 | get_syscall_by_number (iter, &s); | |
8245 | ||
8246 | if (s.name != NULL) | |
8247 | text = xstrprintf ("%s%s, ", text, s.name); | |
8248 | else | |
8249 | text = xstrprintf ("%s%d, ", text, iter); | |
8250 | ||
8251 | /* We have to xfree the last 'text' (now stored at 'x') | |
e5dd4106 | 8252 | because xstrprintf dynamically allocates new space for it |
a96d9b2e SDJ |
8253 | on every call. */ |
8254 | xfree (x); | |
8255 | } | |
8256 | /* Remove the last comma. */ | |
8257 | text[strlen (text) - 2] = '\0'; | |
8258 | ui_out_field_string (uiout, "what", text); | |
8259 | } | |
8260 | else | |
8261 | ui_out_field_string (uiout, "what", "<any syscall>"); | |
8262 | ui_out_text (uiout, "\" "); | |
8263 | } | |
8264 | ||
8265 | /* Implement the "print_mention" breakpoint_ops method for syscall | |
8266 | catchpoints. */ | |
8267 | ||
8268 | static void | |
8269 | print_mention_catch_syscall (struct breakpoint *b) | |
8270 | { | |
be5c67c1 PA |
8271 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
8272 | ||
8273 | if (c->syscalls_to_be_caught) | |
a96d9b2e SDJ |
8274 | { |
8275 | int i, iter; | |
8276 | ||
be5c67c1 | 8277 | if (VEC_length (int, c->syscalls_to_be_caught) > 1) |
a96d9b2e SDJ |
8278 | printf_filtered (_("Catchpoint %d (syscalls"), b->number); |
8279 | else | |
8280 | printf_filtered (_("Catchpoint %d (syscall"), b->number); | |
8281 | ||
8282 | for (i = 0; | |
be5c67c1 | 8283 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8284 | i++) |
8285 | { | |
8286 | struct syscall s; | |
8287 | get_syscall_by_number (iter, &s); | |
8288 | ||
8289 | if (s.name) | |
8290 | printf_filtered (" '%s' [%d]", s.name, s.number); | |
8291 | else | |
8292 | printf_filtered (" %d", s.number); | |
8293 | } | |
8294 | printf_filtered (")"); | |
8295 | } | |
8296 | else | |
8297 | printf_filtered (_("Catchpoint %d (any syscall)"), | |
8298 | b->number); | |
8299 | } | |
8300 | ||
6149aea9 PA |
8301 | /* Implement the "print_recreate" breakpoint_ops method for syscall |
8302 | catchpoints. */ | |
8303 | ||
8304 | static void | |
8305 | print_recreate_catch_syscall (struct breakpoint *b, struct ui_file *fp) | |
8306 | { | |
be5c67c1 PA |
8307 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
8308 | ||
6149aea9 PA |
8309 | fprintf_unfiltered (fp, "catch syscall"); |
8310 | ||
be5c67c1 | 8311 | if (c->syscalls_to_be_caught) |
6149aea9 PA |
8312 | { |
8313 | int i, iter; | |
8314 | ||
8315 | for (i = 0; | |
be5c67c1 | 8316 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
6149aea9 PA |
8317 | i++) |
8318 | { | |
8319 | struct syscall s; | |
8320 | ||
8321 | get_syscall_by_number (iter, &s); | |
8322 | if (s.name) | |
8323 | fprintf_unfiltered (fp, " %s", s.name); | |
8324 | else | |
8325 | fprintf_unfiltered (fp, " %d", s.number); | |
8326 | } | |
8327 | } | |
d9b3f62e | 8328 | print_recreate_thread (b, fp); |
6149aea9 PA |
8329 | } |
8330 | ||
a96d9b2e SDJ |
8331 | /* The breakpoint_ops structure to be used in syscall catchpoints. */ |
8332 | ||
2060206e | 8333 | static struct breakpoint_ops catch_syscall_breakpoint_ops; |
a96d9b2e SDJ |
8334 | |
8335 | /* Returns non-zero if 'b' is a syscall catchpoint. */ | |
8336 | ||
8337 | static int | |
8338 | syscall_catchpoint_p (struct breakpoint *b) | |
8339 | { | |
8340 | return (b->ops == &catch_syscall_breakpoint_ops); | |
8341 | } | |
8342 | ||
346774a9 PA |
8343 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
8344 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
8345 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
8346 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 8347 | |
346774a9 PA |
8348 | static void |
8349 | init_catchpoint (struct breakpoint *b, | |
8350 | struct gdbarch *gdbarch, int tempflag, | |
8351 | char *cond_string, | |
c0a91b2b | 8352 | const struct breakpoint_ops *ops) |
c906108c | 8353 | { |
c5aa993b | 8354 | struct symtab_and_line sal; |
346774a9 | 8355 | |
fe39c653 | 8356 | init_sal (&sal); |
6c95b8df | 8357 | sal.pspace = current_program_space; |
c5aa993b | 8358 | |
28010a5d | 8359 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8360 | |
1b36a34b | 8361 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 8362 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
8363 | } |
8364 | ||
28010a5d | 8365 | void |
3ea46bff | 8366 | install_breakpoint (int internal, struct breakpoint *b, int update_gll) |
c56053d2 PA |
8367 | { |
8368 | add_to_breakpoint_chain (b); | |
3a5c3e22 | 8369 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8370 | if (is_tracepoint (b)) |
8371 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8372 | if (!internal) |
8373 | mention (b); | |
c56053d2 | 8374 | observer_notify_breakpoint_created (b); |
3ea46bff YQ |
8375 | |
8376 | if (update_gll) | |
8377 | update_global_location_list (1); | |
c56053d2 PA |
8378 | } |
8379 | ||
9b70b993 | 8380 | static void |
a6d9a66e UW |
8381 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
8382 | int tempflag, char *cond_string, | |
c0a91b2b | 8383 | const struct breakpoint_ops *ops) |
c906108c | 8384 | { |
e29a4733 | 8385 | struct fork_catchpoint *c = XNEW (struct fork_catchpoint); |
ce78b96d | 8386 | |
e29a4733 PA |
8387 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, ops); |
8388 | ||
8389 | c->forked_inferior_pid = null_ptid; | |
8390 | ||
3ea46bff | 8391 | install_breakpoint (0, &c->base, 1); |
c906108c SS |
8392 | } |
8393 | ||
fe798b75 JB |
8394 | /* Exec catchpoints. */ |
8395 | ||
b4d90040 PA |
8396 | /* An instance of this type is used to represent an exec catchpoint. |
8397 | It includes a "struct breakpoint" as a kind of base class; users | |
8398 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
8399 | really of this type iff its ops pointer points to | |
8400 | CATCH_EXEC_BREAKPOINT_OPS. */ | |
8401 | ||
8402 | struct exec_catchpoint | |
8403 | { | |
8404 | /* The base class. */ | |
8405 | struct breakpoint base; | |
8406 | ||
8407 | /* Filename of a program whose exec triggered this catchpoint. | |
8408 | This field is only valid immediately after this catchpoint has | |
8409 | triggered. */ | |
8410 | char *exec_pathname; | |
8411 | }; | |
8412 | ||
8413 | /* Implement the "dtor" breakpoint_ops method for exec | |
8414 | catchpoints. */ | |
8415 | ||
8416 | static void | |
8417 | dtor_catch_exec (struct breakpoint *b) | |
8418 | { | |
8419 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; | |
8420 | ||
8421 | xfree (c->exec_pathname); | |
348d480f | 8422 | |
2060206e | 8423 | base_breakpoint_ops.dtor (b); |
b4d90040 PA |
8424 | } |
8425 | ||
77b06cd7 TJB |
8426 | static int |
8427 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8428 | { |
77b06cd7 | 8429 | return target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
fe798b75 | 8430 | } |
c906108c | 8431 | |
fe798b75 | 8432 | static int |
77b06cd7 | 8433 | remove_catch_exec (struct bp_location *bl) |
fe798b75 JB |
8434 | { |
8435 | return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); | |
8436 | } | |
c906108c | 8437 | |
fe798b75 | 8438 | static int |
f1310107 | 8439 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
09ac7c10 TT |
8440 | struct address_space *aspace, CORE_ADDR bp_addr, |
8441 | const struct target_waitstatus *ws) | |
fe798b75 | 8442 | { |
b4d90040 PA |
8443 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8444 | ||
f90263c1 TT |
8445 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8446 | return 0; | |
8447 | ||
8448 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8449 | return 1; | |
fe798b75 | 8450 | } |
c906108c | 8451 | |
fe798b75 | 8452 | static enum print_stop_action |
348d480f | 8453 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8454 | { |
36dfb11c | 8455 | struct ui_out *uiout = current_uiout; |
348d480f | 8456 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8457 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8458 | ||
fe798b75 | 8459 | annotate_catchpoint (b->number); |
36dfb11c TT |
8460 | if (b->disposition == disp_del) |
8461 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
8462 | else | |
8463 | ui_out_text (uiout, "\nCatchpoint "); | |
8464 | if (ui_out_is_mi_like_p (uiout)) | |
8465 | { | |
8466 | ui_out_field_string (uiout, "reason", | |
8467 | async_reason_lookup (EXEC_ASYNC_EXEC)); | |
8468 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8469 | } | |
8470 | ui_out_field_int (uiout, "bkptno", b->number); | |
8471 | ui_out_text (uiout, " (exec'd "); | |
8472 | ui_out_field_string (uiout, "new-exec", c->exec_pathname); | |
8473 | ui_out_text (uiout, "), "); | |
8474 | ||
fe798b75 | 8475 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8476 | } |
8477 | ||
fe798b75 | 8478 | static void |
a6d9a66e | 8479 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8480 | { |
b4d90040 | 8481 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8482 | struct value_print_options opts; |
79a45e25 | 8483 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8484 | |
8485 | get_user_print_options (&opts); | |
8486 | ||
8487 | /* Field 4, the address, is omitted (which makes the columns | |
8488 | not line up too nicely with the headers, but the effect | |
8489 | is relatively readable). */ | |
8490 | if (opts.addressprint) | |
8491 | ui_out_field_skip (uiout, "addr"); | |
8492 | annotate_field (5); | |
8493 | ui_out_text (uiout, "exec"); | |
b4d90040 | 8494 | if (c->exec_pathname != NULL) |
fe798b75 JB |
8495 | { |
8496 | ui_out_text (uiout, ", program \""); | |
b4d90040 | 8497 | ui_out_field_string (uiout, "what", c->exec_pathname); |
fe798b75 JB |
8498 | ui_out_text (uiout, "\" "); |
8499 | } | |
8500 | } | |
8501 | ||
8502 | static void | |
8503 | print_mention_catch_exec (struct breakpoint *b) | |
8504 | { | |
8505 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8506 | } | |
8507 | ||
6149aea9 PA |
8508 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8509 | catchpoints. */ | |
8510 | ||
8511 | static void | |
8512 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8513 | { | |
8514 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8515 | print_recreate_thread (b, fp); |
6149aea9 PA |
8516 | } |
8517 | ||
2060206e | 8518 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8519 | |
a96d9b2e SDJ |
8520 | static void |
8521 | create_syscall_event_catchpoint (int tempflag, VEC(int) *filter, | |
c0a91b2b | 8522 | const struct breakpoint_ops *ops) |
a96d9b2e | 8523 | { |
be5c67c1 | 8524 | struct syscall_catchpoint *c; |
a96d9b2e | 8525 | struct gdbarch *gdbarch = get_current_arch (); |
a96d9b2e | 8526 | |
be5c67c1 PA |
8527 | c = XNEW (struct syscall_catchpoint); |
8528 | init_catchpoint (&c->base, gdbarch, tempflag, NULL, ops); | |
8529 | c->syscalls_to_be_caught = filter; | |
a96d9b2e | 8530 | |
3ea46bff | 8531 | install_breakpoint (0, &c->base, 1); |
a96d9b2e SDJ |
8532 | } |
8533 | ||
c906108c | 8534 | static int |
fba45db2 | 8535 | hw_breakpoint_used_count (void) |
c906108c | 8536 | { |
c906108c | 8537 | int i = 0; |
f1310107 TJB |
8538 | struct breakpoint *b; |
8539 | struct bp_location *bl; | |
c906108c SS |
8540 | |
8541 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8542 | { |
d6b74ac4 | 8543 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8544 | for (bl = b->loc; bl; bl = bl->next) |
8545 | { | |
8546 | /* Special types of hardware breakpoints may use more than | |
8547 | one register. */ | |
348d480f | 8548 | i += b->ops->resources_needed (bl); |
f1310107 | 8549 | } |
c5aa993b | 8550 | } |
c906108c SS |
8551 | |
8552 | return i; | |
8553 | } | |
8554 | ||
a1398e0c PA |
8555 | /* Returns the resources B would use if it were a hardware |
8556 | watchpoint. */ | |
8557 | ||
c906108c | 8558 | static int |
a1398e0c | 8559 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8560 | { |
c906108c | 8561 | int i = 0; |
e09342b5 | 8562 | struct bp_location *bl; |
c906108c | 8563 | |
a1398e0c PA |
8564 | if (!breakpoint_enabled (b)) |
8565 | return 0; | |
8566 | ||
8567 | for (bl = b->loc; bl; bl = bl->next) | |
8568 | { | |
8569 | /* Special types of hardware watchpoints may use more than | |
8570 | one register. */ | |
8571 | i += b->ops->resources_needed (bl); | |
8572 | } | |
8573 | ||
8574 | return i; | |
8575 | } | |
8576 | ||
8577 | /* Returns the sum the used resources of all hardware watchpoints of | |
8578 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8579 | the sum of the used resources of all hardware watchpoints of other | |
8580 | types _not_ TYPE. */ | |
8581 | ||
8582 | static int | |
8583 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8584 | enum bptype type, int *other_type_used) | |
8585 | { | |
8586 | int i = 0; | |
8587 | struct breakpoint *b; | |
8588 | ||
c906108c SS |
8589 | *other_type_used = 0; |
8590 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8591 | { |
a1398e0c PA |
8592 | if (b == except) |
8593 | continue; | |
e09342b5 TJB |
8594 | if (!breakpoint_enabled (b)) |
8595 | continue; | |
8596 | ||
a1398e0c PA |
8597 | if (b->type == type) |
8598 | i += hw_watchpoint_use_count (b); | |
8599 | else if (is_hardware_watchpoint (b)) | |
8600 | *other_type_used = 1; | |
e09342b5 TJB |
8601 | } |
8602 | ||
c906108c SS |
8603 | return i; |
8604 | } | |
8605 | ||
c906108c | 8606 | void |
fba45db2 | 8607 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8608 | { |
c5aa993b | 8609 | struct breakpoint *b; |
c906108c SS |
8610 | |
8611 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8612 | { |
cc60f2e3 | 8613 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8614 | { |
b5de0fa7 | 8615 | b->enable_state = bp_call_disabled; |
b60e7edf | 8616 | update_global_location_list (0); |
c5aa993b JM |
8617 | } |
8618 | } | |
c906108c SS |
8619 | } |
8620 | ||
8621 | void | |
fba45db2 | 8622 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8623 | { |
c5aa993b | 8624 | struct breakpoint *b; |
c906108c SS |
8625 | |
8626 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8627 | { |
cc60f2e3 | 8628 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8629 | { |
b5de0fa7 | 8630 | b->enable_state = bp_enabled; |
b60e7edf | 8631 | update_global_location_list (1); |
c5aa993b JM |
8632 | } |
8633 | } | |
c906108c SS |
8634 | } |
8635 | ||
8bea4e01 UW |
8636 | void |
8637 | disable_breakpoints_before_startup (void) | |
8638 | { | |
6c95b8df | 8639 | current_program_space->executing_startup = 1; |
f8eba3c6 | 8640 | update_global_location_list (0); |
8bea4e01 UW |
8641 | } |
8642 | ||
8643 | void | |
8644 | enable_breakpoints_after_startup (void) | |
8645 | { | |
6c95b8df | 8646 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8647 | breakpoint_re_set (); |
8bea4e01 UW |
8648 | } |
8649 | ||
c906108c SS |
8650 | |
8651 | /* Set a breakpoint that will evaporate an end of command | |
8652 | at address specified by SAL. | |
8653 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
8654 | ||
8655 | struct breakpoint * | |
a6d9a66e UW |
8656 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8657 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8658 | { |
52f0bd74 | 8659 | struct breakpoint *b; |
edb3359d | 8660 | |
193facb3 JK |
8661 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8662 | tail-called one. */ | |
8663 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8664 | |
06edf0c0 | 8665 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8666 | b->enable_state = bp_enabled; |
8667 | b->disposition = disp_donttouch; | |
818dd999 | 8668 | b->frame_id = frame_id; |
c906108c | 8669 | |
4a64f543 MS |
8670 | /* If we're debugging a multi-threaded program, then we want |
8671 | momentary breakpoints to be active in only a single thread of | |
8672 | control. */ | |
39f77062 KB |
8673 | if (in_thread_list (inferior_ptid)) |
8674 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 8675 | |
b60e7edf | 8676 | update_global_location_list_nothrow (1); |
74960c60 | 8677 | |
c906108c SS |
8678 | return b; |
8679 | } | |
611c83ae | 8680 | |
06edf0c0 PA |
8681 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
8682 | The new breakpoint will have type TYPE, and use OPS as it | |
8683 | breakpoint_ops. */ | |
e58b0e63 | 8684 | |
06edf0c0 PA |
8685 | static struct breakpoint * |
8686 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8687 | enum bptype type, | |
c0a91b2b | 8688 | const struct breakpoint_ops *ops) |
e58b0e63 PA |
8689 | { |
8690 | struct breakpoint *copy; | |
8691 | ||
06edf0c0 | 8692 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8693 | copy->loc = allocate_bp_location (copy); |
0e30163f | 8694 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 8695 | |
a6d9a66e | 8696 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8697 | copy->loc->requested_address = orig->loc->requested_address; |
8698 | copy->loc->address = orig->loc->address; | |
8699 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8700 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8701 | copy->loc->probe = orig->loc->probe; |
e58b0e63 | 8702 | |
f8eba3c6 TT |
8703 | if (orig->loc->source_file != NULL) |
8704 | copy->loc->source_file = xstrdup (orig->loc->source_file); | |
e58b0e63 | 8705 | |
f8eba3c6 | 8706 | copy->loc->line_number = orig->loc->line_number; |
e58b0e63 PA |
8707 | copy->frame_id = orig->frame_id; |
8708 | copy->thread = orig->thread; | |
6c95b8df | 8709 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8710 | |
8711 | copy->enable_state = bp_enabled; | |
8712 | copy->disposition = disp_donttouch; | |
8713 | copy->number = internal_breakpoint_number--; | |
8714 | ||
8715 | update_global_location_list_nothrow (0); | |
8716 | return copy; | |
8717 | } | |
8718 | ||
06edf0c0 PA |
8719 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8720 | ORIG is NULL. */ | |
8721 | ||
8722 | struct breakpoint * | |
8723 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8724 | { | |
8725 | /* If there's nothing to clone, then return nothing. */ | |
8726 | if (orig == NULL) | |
8727 | return NULL; | |
8728 | ||
8729 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops); | |
8730 | } | |
8731 | ||
611c83ae | 8732 | struct breakpoint * |
a6d9a66e UW |
8733 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8734 | enum bptype type) | |
611c83ae PA |
8735 | { |
8736 | struct symtab_and_line sal; | |
8737 | ||
8738 | sal = find_pc_line (pc, 0); | |
8739 | sal.pc = pc; | |
8740 | sal.section = find_pc_overlay (pc); | |
8741 | sal.explicit_pc = 1; | |
8742 | ||
a6d9a66e | 8743 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8744 | } |
c906108c | 8745 | \f |
c5aa993b | 8746 | |
c906108c SS |
8747 | /* Tell the user we have just set a breakpoint B. */ |
8748 | ||
8749 | static void | |
fba45db2 | 8750 | mention (struct breakpoint *b) |
c906108c | 8751 | { |
348d480f | 8752 | b->ops->print_mention (b); |
79a45e25 | 8753 | if (ui_out_is_mi_like_p (current_uiout)) |
fb40c209 | 8754 | return; |
c906108c SS |
8755 | printf_filtered ("\n"); |
8756 | } | |
c906108c | 8757 | \f |
c5aa993b | 8758 | |
0d381245 | 8759 | static struct bp_location * |
39d61571 | 8760 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8761 | const struct symtab_and_line *sal) |
8762 | { | |
8763 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8764 | CORE_ADDR adjusted_address; |
8765 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8766 | ||
8767 | if (loc_gdbarch == NULL) | |
8768 | loc_gdbarch = b->gdbarch; | |
8769 | ||
8770 | /* Adjust the breakpoint's address prior to allocating a location. | |
8771 | Once we call allocate_bp_location(), that mostly uninitialized | |
8772 | location will be placed on the location chain. Adjustment of the | |
8773 | breakpoint may cause target_read_memory() to be called and we do | |
8774 | not want its scan of the location chain to find a breakpoint and | |
8775 | location that's only been partially initialized. */ | |
8776 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8777 | sal->pc, b->type); | |
0d381245 | 8778 | |
39d61571 | 8779 | loc = allocate_bp_location (b); |
0d381245 VP |
8780 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
8781 | ; | |
8782 | *tmp = loc; | |
3742cc8b | 8783 | |
0d381245 | 8784 | loc->requested_address = sal->pc; |
3742cc8b | 8785 | loc->address = adjusted_address; |
6c95b8df | 8786 | loc->pspace = sal->pspace; |
55aa24fb | 8787 | loc->probe = sal->probe; |
6c95b8df | 8788 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8789 | loc->section = sal->section; |
3742cc8b | 8790 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 TT |
8791 | |
8792 | if (sal->symtab != NULL) | |
8793 | loc->source_file = xstrdup (sal->symtab->filename); | |
8794 | loc->line_number = sal->line; | |
8795 | ||
0e30163f JK |
8796 | set_breakpoint_location_function (loc, |
8797 | sal->explicit_pc || sal->explicit_line); | |
0d381245 VP |
8798 | return loc; |
8799 | } | |
514f746b AR |
8800 | \f |
8801 | ||
8802 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
8803 | return 0 otherwise. */ | |
8804 | ||
8805 | static int | |
8806 | bp_loc_is_permanent (struct bp_location *loc) | |
8807 | { | |
8808 | int len; | |
8809 | CORE_ADDR addr; | |
1afeeb75 | 8810 | const gdb_byte *bpoint; |
514f746b | 8811 | gdb_byte *target_mem; |
939c61fa JK |
8812 | struct cleanup *cleanup; |
8813 | int retval = 0; | |
514f746b AR |
8814 | |
8815 | gdb_assert (loc != NULL); | |
8816 | ||
8817 | addr = loc->address; | |
1afeeb75 | 8818 | bpoint = gdbarch_breakpoint_from_pc (loc->gdbarch, &addr, &len); |
514f746b | 8819 | |
939c61fa | 8820 | /* Software breakpoints unsupported? */ |
1afeeb75 | 8821 | if (bpoint == NULL) |
939c61fa JK |
8822 | return 0; |
8823 | ||
514f746b AR |
8824 | target_mem = alloca (len); |
8825 | ||
939c61fa JK |
8826 | /* Enable the automatic memory restoration from breakpoints while |
8827 | we read the memory. Otherwise we could say about our temporary | |
8828 | breakpoints they are permanent. */ | |
6c95b8df PA |
8829 | cleanup = save_current_space_and_thread (); |
8830 | ||
8831 | switch_to_program_space_and_thread (loc->pspace); | |
8832 | make_show_memory_breakpoints_cleanup (0); | |
939c61fa | 8833 | |
514f746b | 8834 | if (target_read_memory (loc->address, target_mem, len) == 0 |
1afeeb75 | 8835 | && memcmp (target_mem, bpoint, len) == 0) |
939c61fa | 8836 | retval = 1; |
514f746b | 8837 | |
939c61fa JK |
8838 | do_cleanups (cleanup); |
8839 | ||
8840 | return retval; | |
514f746b AR |
8841 | } |
8842 | ||
e7e0cddf SS |
8843 | /* Build a command list for the dprintf corresponding to the current |
8844 | settings of the dprintf style options. */ | |
8845 | ||
8846 | static void | |
8847 | update_dprintf_command_list (struct breakpoint *b) | |
8848 | { | |
8849 | char *dprintf_args = b->extra_string; | |
8850 | char *printf_line = NULL; | |
8851 | ||
8852 | if (!dprintf_args) | |
8853 | return; | |
8854 | ||
8855 | dprintf_args = skip_spaces (dprintf_args); | |
8856 | ||
8857 | /* Allow a comma, as it may have terminated a location, but don't | |
8858 | insist on it. */ | |
8859 | if (*dprintf_args == ',') | |
8860 | ++dprintf_args; | |
8861 | dprintf_args = skip_spaces (dprintf_args); | |
8862 | ||
8863 | if (*dprintf_args != '"') | |
8864 | error (_("Bad format string, missing '\"'.")); | |
8865 | ||
d3ce09f5 | 8866 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8867 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8868 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
8869 | { |
8870 | if (!dprintf_function) | |
8871 | error (_("No function supplied for dprintf call")); | |
8872 | ||
8873 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
8874 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
8875 | dprintf_function, | |
8876 | dprintf_channel, | |
8877 | dprintf_args); | |
8878 | else | |
8879 | printf_line = xstrprintf ("call (void) %s (%s)", | |
8880 | dprintf_function, | |
8881 | dprintf_args); | |
8882 | } | |
d3ce09f5 SS |
8883 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8884 | { | |
8885 | if (target_can_run_breakpoint_commands ()) | |
8886 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8887 | else | |
8888 | { | |
8889 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8890 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8891 | } | |
8892 | } | |
e7e0cddf SS |
8893 | else |
8894 | internal_error (__FILE__, __LINE__, | |
8895 | _("Invalid dprintf style.")); | |
8896 | ||
8897 | /* Manufacture a printf/continue sequence. */ | |
8898 | if (printf_line) | |
8899 | { | |
8900 | struct command_line *printf_cmd_line, *cont_cmd_line = NULL; | |
8901 | ||
d3ce09f5 SS |
8902 | if (strcmp (dprintf_style, dprintf_style_agent) != 0) |
8903 | { | |
8904 | cont_cmd_line = xmalloc (sizeof (struct command_line)); | |
8905 | cont_cmd_line->control_type = simple_control; | |
8906 | cont_cmd_line->body_count = 0; | |
8907 | cont_cmd_line->body_list = NULL; | |
8908 | cont_cmd_line->next = NULL; | |
8909 | cont_cmd_line->line = xstrdup ("continue"); | |
8910 | } | |
e7e0cddf SS |
8911 | |
8912 | printf_cmd_line = xmalloc (sizeof (struct command_line)); | |
8913 | printf_cmd_line->control_type = simple_control; | |
8914 | printf_cmd_line->body_count = 0; | |
8915 | printf_cmd_line->body_list = NULL; | |
8916 | printf_cmd_line->next = cont_cmd_line; | |
8917 | printf_cmd_line->line = printf_line; | |
8918 | ||
8919 | breakpoint_set_commands (b, printf_cmd_line); | |
8920 | } | |
8921 | } | |
8922 | ||
8923 | /* Update all dprintf commands, making their command lists reflect | |
8924 | current style settings. */ | |
8925 | ||
8926 | static void | |
8927 | update_dprintf_commands (char *args, int from_tty, | |
8928 | struct cmd_list_element *c) | |
8929 | { | |
8930 | struct breakpoint *b; | |
8931 | ||
8932 | ALL_BREAKPOINTS (b) | |
8933 | { | |
8934 | if (b->type == bp_dprintf) | |
8935 | update_dprintf_command_list (b); | |
8936 | } | |
8937 | } | |
c3f6f71d | 8938 | |
018d34a4 VP |
8939 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
8940 | as textual description of the location, and COND_STRING | |
db107f19 | 8941 | as condition expression. */ |
018d34a4 VP |
8942 | |
8943 | static void | |
d9b3f62e PA |
8944 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
8945 | struct symtabs_and_lines sals, char *addr_string, | |
f8eba3c6 | 8946 | char *filter, char *cond_string, |
e7e0cddf | 8947 | char *extra_string, |
d9b3f62e PA |
8948 | enum bptype type, enum bpdisp disposition, |
8949 | int thread, int task, int ignore_count, | |
c0a91b2b | 8950 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8951 | int enabled, int internal, unsigned flags, |
8952 | int display_canonical) | |
018d34a4 | 8953 | { |
0d381245 | 8954 | int i; |
018d34a4 VP |
8955 | |
8956 | if (type == bp_hardware_breakpoint) | |
8957 | { | |
fbbd034e AS |
8958 | int target_resources_ok; |
8959 | ||
8960 | i = hw_breakpoint_used_count (); | |
8961 | target_resources_ok = | |
8962 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8963 | i + 1, 0); |
8964 | if (target_resources_ok == 0) | |
8965 | error (_("No hardware breakpoint support in the target.")); | |
8966 | else if (target_resources_ok < 0) | |
8967 | error (_("Hardware breakpoints used exceeds limit.")); | |
8968 | } | |
8969 | ||
6c95b8df PA |
8970 | gdb_assert (sals.nelts > 0); |
8971 | ||
0d381245 VP |
8972 | for (i = 0; i < sals.nelts; ++i) |
8973 | { | |
8974 | struct symtab_and_line sal = sals.sals[i]; | |
8975 | struct bp_location *loc; | |
8976 | ||
8977 | if (from_tty) | |
5af949e3 UW |
8978 | { |
8979 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
8980 | if (!loc_gdbarch) | |
8981 | loc_gdbarch = gdbarch; | |
8982 | ||
8983 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 8984 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 8985 | } |
0d381245 VP |
8986 | |
8987 | if (i == 0) | |
8988 | { | |
d9b3f62e | 8989 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 8990 | b->thread = thread; |
4a306c9a | 8991 | b->task = task; |
855a6e68 | 8992 | |
0d381245 | 8993 | b->cond_string = cond_string; |
e7e0cddf | 8994 | b->extra_string = extra_string; |
0d381245 | 8995 | b->ignore_count = ignore_count; |
41447f92 | 8996 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 8997 | b->disposition = disposition; |
6c95b8df | 8998 | |
44f238bb PA |
8999 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
9000 | b->loc->inserted = 1; | |
9001 | ||
0fb4aa4b PA |
9002 | if (type == bp_static_tracepoint) |
9003 | { | |
d9b3f62e | 9004 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
9005 | struct static_tracepoint_marker marker; |
9006 | ||
983af33b | 9007 | if (strace_marker_p (b)) |
0fb4aa4b PA |
9008 | { |
9009 | /* We already know the marker exists, otherwise, we | |
9010 | wouldn't see a sal for it. */ | |
9011 | char *p = &addr_string[3]; | |
9012 | char *endp; | |
9013 | char *marker_str; | |
0fb4aa4b | 9014 | |
e9cafbcc | 9015 | p = skip_spaces (p); |
0fb4aa4b | 9016 | |
e9cafbcc | 9017 | endp = skip_to_space (p); |
0fb4aa4b PA |
9018 | |
9019 | marker_str = savestring (p, endp - p); | |
d9b3f62e | 9020 | t->static_trace_marker_id = marker_str; |
0fb4aa4b | 9021 | |
3e43a32a MS |
9022 | printf_filtered (_("Probed static tracepoint " |
9023 | "marker \"%s\"\n"), | |
d9b3f62e | 9024 | t->static_trace_marker_id); |
0fb4aa4b PA |
9025 | } |
9026 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
9027 | { | |
d9b3f62e | 9028 | t->static_trace_marker_id = xstrdup (marker.str_id); |
0fb4aa4b PA |
9029 | release_static_tracepoint_marker (&marker); |
9030 | ||
3e43a32a MS |
9031 | printf_filtered (_("Probed static tracepoint " |
9032 | "marker \"%s\"\n"), | |
d9b3f62e | 9033 | t->static_trace_marker_id); |
0fb4aa4b PA |
9034 | } |
9035 | else | |
3e43a32a MS |
9036 | warning (_("Couldn't determine the static " |
9037 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
9038 | } |
9039 | ||
0d381245 VP |
9040 | loc = b->loc; |
9041 | } | |
9042 | else | |
018d34a4 | 9043 | { |
39d61571 | 9044 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
9045 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
9046 | loc->inserted = 1; | |
0d381245 VP |
9047 | } |
9048 | ||
514f746b AR |
9049 | if (bp_loc_is_permanent (loc)) |
9050 | make_breakpoint_permanent (b); | |
9051 | ||
0d381245 VP |
9052 | if (b->cond_string) |
9053 | { | |
9054 | char *arg = b->cond_string; | |
1bb9788d TT |
9055 | loc->cond = parse_exp_1 (&arg, loc->address, |
9056 | block_for_pc (loc->address), 0); | |
0d381245 | 9057 | if (*arg) |
588ae58c | 9058 | error (_("Garbage '%s' follows condition"), arg); |
018d34a4 | 9059 | } |
e7e0cddf SS |
9060 | |
9061 | /* Dynamic printf requires and uses additional arguments on the | |
9062 | command line, otherwise it's an error. */ | |
9063 | if (type == bp_dprintf) | |
9064 | { | |
9065 | if (b->extra_string) | |
9066 | update_dprintf_command_list (b); | |
9067 | else | |
9068 | error (_("Format string required")); | |
9069 | } | |
9070 | else if (b->extra_string) | |
588ae58c | 9071 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 9072 | } |
018d34a4 | 9073 | |
56435ebe | 9074 | b->display_canonical = display_canonical; |
018d34a4 VP |
9075 | if (addr_string) |
9076 | b->addr_string = addr_string; | |
9077 | else | |
9078 | /* addr_string has to be used or breakpoint_re_set will delete | |
9079 | me. */ | |
5af949e3 UW |
9080 | b->addr_string |
9081 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
f8eba3c6 | 9082 | b->filter = filter; |
d9b3f62e | 9083 | } |
018d34a4 | 9084 | |
d9b3f62e PA |
9085 | static void |
9086 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
9087 | struct symtabs_and_lines sals, char *addr_string, | |
f8eba3c6 | 9088 | char *filter, char *cond_string, |
e7e0cddf | 9089 | char *extra_string, |
d9b3f62e PA |
9090 | enum bptype type, enum bpdisp disposition, |
9091 | int thread, int task, int ignore_count, | |
c0a91b2b | 9092 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
9093 | int enabled, int internal, unsigned flags, |
9094 | int display_canonical) | |
d9b3f62e PA |
9095 | { |
9096 | struct breakpoint *b; | |
9097 | struct cleanup *old_chain; | |
9098 | ||
9099 | if (is_tracepoint_type (type)) | |
9100 | { | |
9101 | struct tracepoint *t; | |
9102 | ||
9103 | t = XCNEW (struct tracepoint); | |
9104 | b = &t->base; | |
9105 | } | |
9106 | else | |
9107 | b = XNEW (struct breakpoint); | |
9108 | ||
9109 | old_chain = make_cleanup (xfree, b); | |
9110 | ||
9111 | init_breakpoint_sal (b, gdbarch, | |
9112 | sals, addr_string, | |
e7e0cddf | 9113 | filter, cond_string, extra_string, |
d9b3f62e PA |
9114 | type, disposition, |
9115 | thread, task, ignore_count, | |
9116 | ops, from_tty, | |
44f238bb PA |
9117 | enabled, internal, flags, |
9118 | display_canonical); | |
d9b3f62e PA |
9119 | discard_cleanups (old_chain); |
9120 | ||
3ea46bff | 9121 | install_breakpoint (internal, b, 0); |
018d34a4 VP |
9122 | } |
9123 | ||
9124 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
9125 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
9126 | value. COND_STRING, if not NULL, specified the condition to be | |
9127 | used for all breakpoints. Essentially the only case where | |
9128 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
9129 | function. In that case, it's still not possible to specify | |
9130 | separate conditions for different overloaded functions, so | |
9131 | we take just a single condition string. | |
9132 | ||
c3f6f71d | 9133 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 9134 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
9135 | array contents). If the function fails (error() is called), the |
9136 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 9137 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
9138 | |
9139 | static void | |
8cdf0e15 | 9140 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 9141 | struct linespec_result *canonical, |
e7e0cddf | 9142 | char *cond_string, char *extra_string, |
8cdf0e15 VP |
9143 | enum bptype type, enum bpdisp disposition, |
9144 | int thread, int task, int ignore_count, | |
c0a91b2b | 9145 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 9146 | int enabled, int internal, unsigned flags) |
c906108c | 9147 | { |
018d34a4 | 9148 | int i; |
f8eba3c6 | 9149 | struct linespec_sals *lsal; |
cc59ec59 | 9150 | |
f8eba3c6 TT |
9151 | if (canonical->pre_expanded) |
9152 | gdb_assert (VEC_length (linespec_sals, canonical->sals) == 1); | |
9153 | ||
9154 | for (i = 0; VEC_iterate (linespec_sals, canonical->sals, i, lsal); ++i) | |
c3f6f71d | 9155 | { |
f8eba3c6 TT |
9156 | /* Note that 'addr_string' can be NULL in the case of a plain |
9157 | 'break', without arguments. */ | |
9158 | char *addr_string = (canonical->addr_string | |
9159 | ? xstrdup (canonical->addr_string) | |
9160 | : NULL); | |
9161 | char *filter_string = lsal->canonical ? xstrdup (lsal->canonical) : NULL; | |
9162 | struct cleanup *inner = make_cleanup (xfree, addr_string); | |
0d381245 | 9163 | |
f8eba3c6 TT |
9164 | make_cleanup (xfree, filter_string); |
9165 | create_breakpoint_sal (gdbarch, lsal->sals, | |
9166 | addr_string, | |
9167 | filter_string, | |
e7e0cddf SS |
9168 | cond_string, extra_string, |
9169 | type, disposition, | |
84f4c1fe | 9170 | thread, task, ignore_count, ops, |
44f238bb | 9171 | from_tty, enabled, internal, flags, |
56435ebe | 9172 | canonical->special_display); |
f8eba3c6 | 9173 | discard_cleanups (inner); |
c3f6f71d | 9174 | } |
c3f6f71d | 9175 | } |
c906108c | 9176 | |
9998af43 | 9177 | /* Parse ADDRESS which is assumed to be a SAL specification possibly |
c3f6f71d | 9178 | followed by conditionals. On return, SALS contains an array of SAL |
4a64f543 | 9179 | addresses found. ADDR_STRING contains a vector of (canonical) |
9998af43 TJB |
9180 | address strings. ADDRESS points to the end of the SAL. |
9181 | ||
9182 | The array and the line spec strings are allocated on the heap, it is | |
9183 | the caller's responsibility to free them. */ | |
c906108c | 9184 | |
b9362cc7 | 9185 | static void |
c3f6f71d | 9186 | parse_breakpoint_sals (char **address, |
58438ac1 | 9187 | struct linespec_result *canonical) |
c3f6f71d | 9188 | { |
c3f6f71d | 9189 | /* If no arg given, or if first arg is 'if ', use the default |
4a64f543 | 9190 | breakpoint. */ |
c3f6f71d JM |
9191 | if ((*address) == NULL |
9192 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c | 9193 | { |
1bfeeb0f JL |
9194 | /* The last displayed codepoint, if it's valid, is our default breakpoint |
9195 | address. */ | |
9196 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9197 | { |
f8eba3c6 | 9198 | struct linespec_sals lsal; |
c3f6f71d | 9199 | struct symtab_and_line sal; |
1c8cdcb1 | 9200 | CORE_ADDR pc; |
cc59ec59 | 9201 | |
4a64f543 | 9202 | init_sal (&sal); /* Initialize to zeroes. */ |
f8eba3c6 | 9203 | lsal.sals.sals = (struct symtab_and_line *) |
c906108c | 9204 | xmalloc (sizeof (struct symtab_and_line)); |
1bfeeb0f JL |
9205 | |
9206 | /* Set sal's pspace, pc, symtab, and line to the values | |
1c8cdcb1 JK |
9207 | corresponding to the last call to print_frame_info. |
9208 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
9209 | as the breakpoint line number is inappropriate otherwise. | |
9210 | find_pc_line would adjust PC, re-set it back. */ | |
1bfeeb0f | 9211 | get_last_displayed_sal (&sal); |
1c8cdcb1 JK |
9212 | pc = sal.pc; |
9213 | sal = find_pc_line (pc, 0); | |
00903456 | 9214 | |
4a64f543 | 9215 | /* "break" without arguments is equivalent to "break *PC" |
1bfeeb0f JL |
9216 | where PC is the last displayed codepoint's address. So |
9217 | make sure to set sal.explicit_pc to prevent GDB from | |
9218 | trying to expand the list of sals to include all other | |
9219 | instances with the same symtab and line. */ | |
1c8cdcb1 | 9220 | sal.pc = pc; |
00903456 JK |
9221 | sal.explicit_pc = 1; |
9222 | ||
f8eba3c6 TT |
9223 | lsal.sals.sals[0] = sal; |
9224 | lsal.sals.nelts = 1; | |
9225 | lsal.canonical = NULL; | |
9226 | ||
9227 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
c906108c SS |
9228 | } |
9229 | else | |
8a3fe4f8 | 9230 | error (_("No default breakpoint address now.")); |
c906108c SS |
9231 | } |
9232 | else | |
9233 | { | |
cc80f267 JK |
9234 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
9235 | ||
c906108c | 9236 | /* Force almost all breakpoints to be in terms of the |
4a64f543 MS |
9237 | current_source_symtab (which is decode_line_1's default). |
9238 | This should produce the results we want almost all of the | |
cc80f267 JK |
9239 | time while leaving default_breakpoint_* alone. |
9240 | ||
9241 | ObjC: However, don't match an Objective-C method name which | |
9242 | may have a '+' or '-' succeeded by a '['. */ | |
9243 | if (last_displayed_sal_is_valid () | |
9244 | && (!cursal.symtab | |
9245 | || ((strchr ("+-", (*address)[0]) != NULL) | |
9246 | && ((*address)[1] != '[')))) | |
f8eba3c6 TT |
9247 | decode_line_full (address, DECODE_LINE_FUNFIRSTLINE, |
9248 | get_last_displayed_symtab (), | |
9249 | get_last_displayed_line (), | |
9250 | canonical, NULL, NULL); | |
c906108c | 9251 | else |
f8eba3c6 | 9252 | decode_line_full (address, DECODE_LINE_FUNFIRSTLINE, |
cc80f267 | 9253 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c906108c | 9254 | } |
c3f6f71d | 9255 | } |
c906108c | 9256 | |
c906108c | 9257 | |
c3f6f71d | 9258 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9259 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9260 | |
b9362cc7 | 9261 | static void |
23e7acfb | 9262 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals) |
c3f6f71d JM |
9263 | { |
9264 | int i; | |
cc59ec59 | 9265 | |
c3f6f71d | 9266 | for (i = 0; i < sals->nelts; i++) |
ee53e872 | 9267 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
9268 | } |
9269 | ||
7a697b8d SS |
9270 | /* Fast tracepoints may have restrictions on valid locations. For |
9271 | instance, a fast tracepoint using a jump instead of a trap will | |
9272 | likely have to overwrite more bytes than a trap would, and so can | |
9273 | only be placed where the instruction is longer than the jump, or a | |
9274 | multi-instruction sequence does not have a jump into the middle of | |
9275 | it, etc. */ | |
9276 | ||
9277 | static void | |
9278 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
9279 | struct symtabs_and_lines *sals) | |
9280 | { | |
9281 | int i, rslt; | |
9282 | struct symtab_and_line *sal; | |
9283 | char *msg; | |
9284 | struct cleanup *old_chain; | |
9285 | ||
9286 | for (i = 0; i < sals->nelts; i++) | |
9287 | { | |
f8eba3c6 TT |
9288 | struct gdbarch *sarch; |
9289 | ||
7a697b8d SS |
9290 | sal = &sals->sals[i]; |
9291 | ||
f8eba3c6 TT |
9292 | sarch = get_sal_arch (*sal); |
9293 | /* We fall back to GDBARCH if there is no architecture | |
9294 | associated with SAL. */ | |
9295 | if (sarch == NULL) | |
9296 | sarch = gdbarch; | |
9297 | rslt = gdbarch_fast_tracepoint_valid_at (sarch, sal->pc, | |
7a697b8d SS |
9298 | NULL, &msg); |
9299 | old_chain = make_cleanup (xfree, msg); | |
9300 | ||
9301 | if (!rslt) | |
9302 | error (_("May not have a fast tracepoint at 0x%s%s"), | |
f8eba3c6 | 9303 | paddress (sarch, sal->pc), (msg ? msg : "")); |
7a697b8d SS |
9304 | |
9305 | do_cleanups (old_chain); | |
9306 | } | |
9307 | } | |
9308 | ||
af4908ba KS |
9309 | /* Issue an invalid thread ID error. */ |
9310 | ||
9311 | static void ATTRIBUTE_NORETURN | |
9312 | invalid_thread_id_error (int id) | |
9313 | { | |
9314 | error (_("Unknown thread %d."), id); | |
9315 | } | |
9316 | ||
018d34a4 VP |
9317 | /* Given TOK, a string specification of condition and thread, as |
9318 | accepted by the 'break' command, extract the condition | |
9319 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9320 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9321 | If no condition is found, *COND_STRING is set to NULL. |
9322 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9323 | |
9324 | static void | |
9325 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
e7e0cddf SS |
9326 | char **cond_string, int *thread, int *task, |
9327 | char **rest) | |
018d34a4 VP |
9328 | { |
9329 | *cond_string = NULL; | |
9330 | *thread = -1; | |
ed1d1739 KS |
9331 | *task = 0; |
9332 | *rest = NULL; | |
9333 | ||
018d34a4 VP |
9334 | while (tok && *tok) |
9335 | { | |
9336 | char *end_tok; | |
9337 | int toklen; | |
9338 | char *cond_start = NULL; | |
9339 | char *cond_end = NULL; | |
cc59ec59 | 9340 | |
e9cafbcc | 9341 | tok = skip_spaces (tok); |
e7e0cddf SS |
9342 | |
9343 | if ((*tok == '"' || *tok == ',') && rest) | |
9344 | { | |
9345 | *rest = savestring (tok, strlen (tok)); | |
9346 | return; | |
9347 | } | |
9348 | ||
e9cafbcc | 9349 | end_tok = skip_to_space (tok); |
d634f2de | 9350 | |
018d34a4 | 9351 | toklen = end_tok - tok; |
d634f2de | 9352 | |
018d34a4 VP |
9353 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9354 | { | |
f7545552 TT |
9355 | struct expression *expr; |
9356 | ||
018d34a4 | 9357 | tok = cond_start = end_tok + 1; |
1bb9788d | 9358 | expr = parse_exp_1 (&tok, pc, block_for_pc (pc), 0); |
f7545552 | 9359 | xfree (expr); |
018d34a4 | 9360 | cond_end = tok; |
d634f2de | 9361 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 VP |
9362 | } |
9363 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
9364 | { | |
9365 | char *tmptok; | |
d634f2de | 9366 | |
018d34a4 VP |
9367 | tok = end_tok + 1; |
9368 | tmptok = tok; | |
9369 | *thread = strtol (tok, &tok, 0); | |
9370 | if (tok == tmptok) | |
9371 | error (_("Junk after thread keyword.")); | |
9372 | if (!valid_thread_id (*thread)) | |
af4908ba | 9373 | invalid_thread_id_error (*thread); |
018d34a4 | 9374 | } |
4a306c9a JB |
9375 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9376 | { | |
9377 | char *tmptok; | |
9378 | ||
9379 | tok = end_tok + 1; | |
9380 | tmptok = tok; | |
9381 | *task = strtol (tok, &tok, 0); | |
9382 | if (tok == tmptok) | |
9383 | error (_("Junk after task keyword.")); | |
9384 | if (!valid_task_id (*task)) | |
b6199126 | 9385 | error (_("Unknown task %d."), *task); |
4a306c9a | 9386 | } |
e7e0cddf SS |
9387 | else if (rest) |
9388 | { | |
9389 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9390 | return; |
e7e0cddf | 9391 | } |
018d34a4 VP |
9392 | else |
9393 | error (_("Junk at end of arguments.")); | |
9394 | } | |
9395 | } | |
9396 | ||
0fb4aa4b PA |
9397 | /* Decode a static tracepoint marker spec. */ |
9398 | ||
9399 | static struct symtabs_and_lines | |
9400 | decode_static_tracepoint_spec (char **arg_p) | |
9401 | { | |
9402 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
9403 | struct symtabs_and_lines sals; | |
0fb4aa4b PA |
9404 | struct cleanup *old_chain; |
9405 | char *p = &(*arg_p)[3]; | |
9406 | char *endp; | |
9407 | char *marker_str; | |
9408 | int i; | |
9409 | ||
e9cafbcc | 9410 | p = skip_spaces (p); |
0fb4aa4b | 9411 | |
e9cafbcc | 9412 | endp = skip_to_space (p); |
0fb4aa4b PA |
9413 | |
9414 | marker_str = savestring (p, endp - p); | |
9415 | old_chain = make_cleanup (xfree, marker_str); | |
9416 | ||
9417 | markers = target_static_tracepoint_markers_by_strid (marker_str); | |
9418 | if (VEC_empty(static_tracepoint_marker_p, markers)) | |
9419 | error (_("No known static tracepoint marker named %s"), marker_str); | |
9420 | ||
9421 | sals.nelts = VEC_length(static_tracepoint_marker_p, markers); | |
9422 | sals.sals = xmalloc (sizeof *sals.sals * sals.nelts); | |
9423 | ||
9424 | for (i = 0; i < sals.nelts; i++) | |
9425 | { | |
9426 | struct static_tracepoint_marker *marker; | |
9427 | ||
9428 | marker = VEC_index (static_tracepoint_marker_p, markers, i); | |
9429 | ||
9430 | init_sal (&sals.sals[i]); | |
9431 | ||
9432 | sals.sals[i] = find_pc_line (marker->address, 0); | |
9433 | sals.sals[i].pc = marker->address; | |
9434 | ||
9435 | release_static_tracepoint_marker (marker); | |
9436 | } | |
9437 | ||
9438 | do_cleanups (old_chain); | |
9439 | ||
9440 | *arg_p = endp; | |
9441 | return sals; | |
9442 | } | |
9443 | ||
fd9b8c24 PA |
9444 | /* Set a breakpoint. This function is shared between CLI and MI |
9445 | functions for setting a breakpoint. This function has two major | |
9446 | modes of operations, selected by the PARSE_CONDITION_AND_THREAD | |
9447 | parameter. If non-zero, the function will parse arg, extracting | |
4a64f543 MS |
9448 | breakpoint location, address and thread. Otherwise, ARG is just |
9449 | the location of breakpoint, with condition and thread specified by | |
9450 | the COND_STRING and THREAD parameters. If INTERNAL is non-zero, | |
9451 | the breakpoint number will be allocated from the internal | |
9452 | breakpoint count. Returns true if any breakpoint was created; | |
9453 | false otherwise. */ | |
0101ce28 | 9454 | |
8cdf0e15 VP |
9455 | int |
9456 | create_breakpoint (struct gdbarch *gdbarch, | |
e7e0cddf SS |
9457 | char *arg, char *cond_string, |
9458 | int thread, char *extra_string, | |
8cdf0e15 | 9459 | int parse_condition_and_thread, |
0fb4aa4b | 9460 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9461 | int ignore_count, |
9462 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9463 | const struct breakpoint_ops *ops, |
44f238bb PA |
9464 | int from_tty, int enabled, int internal, |
9465 | unsigned flags) | |
c3f6f71d | 9466 | { |
b78a6381 | 9467 | volatile struct gdb_exception e; |
f8eba3c6 | 9468 | char *copy_arg = NULL; |
c3f6f71d | 9469 | char *addr_start = arg; |
7efd8fc2 | 9470 | struct linespec_result canonical; |
c3f6f71d | 9471 | struct cleanup *old_chain; |
80c99de1 | 9472 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 9473 | int pending = 0; |
4a306c9a | 9474 | int task = 0; |
86b17b60 | 9475 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9476 | |
348d480f PA |
9477 | gdb_assert (ops != NULL); |
9478 | ||
7efd8fc2 | 9479 | init_linespec_result (&canonical); |
c3f6f71d | 9480 | |
b78a6381 TT |
9481 | TRY_CATCH (e, RETURN_MASK_ALL) |
9482 | { | |
983af33b SDJ |
9483 | ops->create_sals_from_address (&arg, &canonical, type_wanted, |
9484 | addr_start, ©_arg); | |
b78a6381 | 9485 | } |
0101ce28 JJ |
9486 | |
9487 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 9488 | switch (e.reason) |
0101ce28 | 9489 | { |
983af33b SDJ |
9490 | case GDB_NO_ERROR: |
9491 | if (VEC_empty (linespec_sals, canonical.sals)) | |
9492 | return 0; | |
9493 | break; | |
05ff989b AC |
9494 | case RETURN_ERROR: |
9495 | switch (e.error) | |
0101ce28 | 9496 | { |
05ff989b | 9497 | case NOT_FOUND_ERROR: |
0101ce28 | 9498 | |
05ff989b AC |
9499 | /* If pending breakpoint support is turned off, throw |
9500 | error. */ | |
fa8d40ab JJ |
9501 | |
9502 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
9503 | throw_exception (e); |
9504 | ||
9505 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9506 | |
05ff989b AC |
9507 | /* If pending breakpoint support is auto query and the user |
9508 | selects no, then simply return the error code. */ | |
059fb39f | 9509 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9510 | && !nquery (_("Make %s pending on future shared library load? "), |
9511 | bptype_string (type_wanted))) | |
fd9b8c24 | 9512 | return 0; |
fa8d40ab | 9513 | |
05ff989b AC |
9514 | /* At this point, either the user was queried about setting |
9515 | a pending breakpoint and selected yes, or pending | |
9516 | breakpoint behavior is on and thus a pending breakpoint | |
9517 | is defaulted on behalf of the user. */ | |
f8eba3c6 TT |
9518 | { |
9519 | struct linespec_sals lsal; | |
9520 | ||
9521 | copy_arg = xstrdup (addr_start); | |
9522 | lsal.canonical = xstrdup (copy_arg); | |
9523 | lsal.sals.nelts = 1; | |
9524 | lsal.sals.sals = XNEW (struct symtab_and_line); | |
9525 | init_sal (&lsal.sals.sals[0]); | |
9526 | pending = 1; | |
9527 | VEC_safe_push (linespec_sals, canonical.sals, &lsal); | |
9528 | } | |
05ff989b AC |
9529 | break; |
9530 | default: | |
98deb0da | 9531 | throw_exception (e); |
0101ce28 | 9532 | } |
2abae994 | 9533 | break; |
05ff989b | 9534 | default: |
983af33b | 9535 | throw_exception (e); |
0101ce28 | 9536 | } |
c3f6f71d | 9537 | |
4a64f543 | 9538 | /* Create a chain of things that always need to be cleaned up. */ |
f8eba3c6 | 9539 | old_chain = make_cleanup_destroy_linespec_result (&canonical); |
c3f6f71d | 9540 | |
c3f6f71d JM |
9541 | /* ----------------------------- SNIP ----------------------------- |
9542 | Anything added to the cleanup chain beyond this point is assumed | |
9543 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
9544 | then the memory is not reclaimed. */ |
9545 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d | 9546 | |
c3f6f71d JM |
9547 | /* Resolve all line numbers to PC's and verify that the addresses |
9548 | are ok for the target. */ | |
0101ce28 | 9549 | if (!pending) |
f8eba3c6 TT |
9550 | { |
9551 | int ix; | |
9552 | struct linespec_sals *iter; | |
9553 | ||
9554 | for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix) | |
9555 | breakpoint_sals_to_pc (&iter->sals); | |
9556 | } | |
c3f6f71d | 9557 | |
7a697b8d | 9558 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9559 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 TT |
9560 | { |
9561 | int ix; | |
9562 | struct linespec_sals *iter; | |
9563 | ||
9564 | for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix) | |
9565 | check_fast_tracepoint_sals (gdbarch, &iter->sals); | |
9566 | } | |
7a697b8d | 9567 | |
c3f6f71d JM |
9568 | /* Verify that condition can be parsed, before setting any |
9569 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9570 | breakpoint. */ |
0101ce28 | 9571 | if (!pending) |
c3f6f71d | 9572 | { |
f8eba3c6 TT |
9573 | struct linespec_sals *lsal; |
9574 | ||
9575 | lsal = VEC_index (linespec_sals, canonical.sals, 0); | |
9576 | ||
2f069f6f | 9577 | if (parse_condition_and_thread) |
72b2ff0e | 9578 | { |
e7e0cddf | 9579 | char *rest; |
72b2ff0e VP |
9580 | /* Here we only parse 'arg' to separate condition |
9581 | from thread number, so parsing in context of first | |
9582 | sal is OK. When setting the breakpoint we'll | |
9583 | re-parse it in context of each sal. */ | |
ed1d1739 | 9584 | |
f8eba3c6 | 9585 | find_condition_and_thread (arg, lsal->sals.sals[0].pc, &cond_string, |
e7e0cddf | 9586 | &thread, &task, &rest); |
72b2ff0e VP |
9587 | if (cond_string) |
9588 | make_cleanup (xfree, cond_string); | |
e7e0cddf SS |
9589 | if (rest) |
9590 | make_cleanup (xfree, rest); | |
9591 | if (rest) | |
9592 | extra_string = rest; | |
72b2ff0e | 9593 | } |
2f069f6f | 9594 | else |
72b2ff0e VP |
9595 | { |
9596 | /* Create a private copy of condition string. */ | |
9597 | if (cond_string) | |
9598 | { | |
9599 | cond_string = xstrdup (cond_string); | |
9600 | make_cleanup (xfree, cond_string); | |
9601 | } | |
e7e0cddf SS |
9602 | /* Create a private copy of any extra string. */ |
9603 | if (extra_string) | |
9604 | { | |
9605 | extra_string = xstrdup (extra_string); | |
9606 | make_cleanup (xfree, extra_string); | |
9607 | } | |
72b2ff0e | 9608 | } |
0fb4aa4b | 9609 | |
983af33b | 9610 | ops->create_breakpoints_sal (gdbarch, &canonical, lsal, |
e7e0cddf | 9611 | cond_string, extra_string, type_wanted, |
d9b3f62e PA |
9612 | tempflag ? disp_del : disp_donttouch, |
9613 | thread, task, ignore_count, ops, | |
44f238bb | 9614 | from_tty, enabled, internal, flags); |
c906108c | 9615 | } |
0101ce28 JJ |
9616 | else |
9617 | { | |
0101ce28 JJ |
9618 | struct breakpoint *b; |
9619 | ||
0101ce28 JJ |
9620 | make_cleanup (xfree, copy_arg); |
9621 | ||
bfccc43c YQ |
9622 | if (is_tracepoint_type (type_wanted)) |
9623 | { | |
9624 | struct tracepoint *t; | |
9625 | ||
9626 | t = XCNEW (struct tracepoint); | |
9627 | b = &t->base; | |
9628 | } | |
9629 | else | |
9630 | b = XNEW (struct breakpoint); | |
9631 | ||
9632 | init_raw_breakpoint_without_location (b, gdbarch, type_wanted, ops); | |
9633 | ||
f8eba3c6 | 9634 | b->addr_string = copy_arg; |
e12c7713 MK |
9635 | if (parse_condition_and_thread) |
9636 | b->cond_string = NULL; | |
9637 | else | |
9638 | { | |
9639 | /* Create a private copy of condition string. */ | |
9640 | if (cond_string) | |
9641 | { | |
9642 | cond_string = xstrdup (cond_string); | |
9643 | make_cleanup (xfree, cond_string); | |
9644 | } | |
9645 | b->cond_string = cond_string; | |
9646 | } | |
e7e0cddf | 9647 | b->extra_string = NULL; |
0101ce28 | 9648 | b->ignore_count = ignore_count; |
0101ce28 | 9649 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9650 | b->condition_not_parsed = 1; |
41447f92 | 9651 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
9652 | if ((type_wanted != bp_breakpoint |
9653 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 9654 | b->pspace = current_program_space; |
8bea4e01 | 9655 | |
bfccc43c | 9656 | install_breakpoint (internal, b, 0); |
0101ce28 JJ |
9657 | } |
9658 | ||
f8eba3c6 | 9659 | if (VEC_length (linespec_sals, canonical.sals) > 1) |
95a42b64 | 9660 | { |
3e43a32a MS |
9661 | warning (_("Multiple breakpoints were set.\nUse the " |
9662 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9663 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9664 | } |
9665 | ||
80c99de1 PA |
9666 | /* That's it. Discard the cleanups for data inserted into the |
9667 | breakpoint. */ | |
9668 | discard_cleanups (bkpt_chain); | |
9669 | /* But cleanup everything else. */ | |
c3f6f71d | 9670 | do_cleanups (old_chain); |
217dc9e2 | 9671 | |
80c99de1 | 9672 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
217dc9e2 | 9673 | update_global_location_list (1); |
fd9b8c24 PA |
9674 | |
9675 | return 1; | |
c3f6f71d | 9676 | } |
c906108c | 9677 | |
348d480f | 9678 | /* Set a breakpoint. |
72b2ff0e VP |
9679 | ARG is a string describing breakpoint address, |
9680 | condition, and thread. | |
9681 | FLAG specifies if a breakpoint is hardware on, | |
9682 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9683 | and BP_TEMPFLAG. */ | |
348d480f | 9684 | |
98deb0da | 9685 | static void |
72b2ff0e | 9686 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 9687 | { |
72b2ff0e | 9688 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9689 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9690 | ? bp_hardware_breakpoint | |
9691 | : bp_breakpoint); | |
55aa24fb SDJ |
9692 | struct breakpoint_ops *ops; |
9693 | const char *arg_cp = arg; | |
9694 | ||
9695 | /* Matching breakpoints on probes. */ | |
9696 | if (arg && probe_linespec_to_ops (&arg_cp) != NULL) | |
9697 | ops = &bkpt_probe_breakpoint_ops; | |
9698 | else | |
9699 | ops = &bkpt_breakpoint_ops; | |
c3f6f71d | 9700 | |
8cdf0e15 VP |
9701 | create_breakpoint (get_current_arch (), |
9702 | arg, | |
e7e0cddf | 9703 | NULL, 0, NULL, 1 /* parse arg */, |
0fb4aa4b | 9704 | tempflag, type_wanted, |
8cdf0e15 VP |
9705 | 0 /* Ignore count */, |
9706 | pending_break_support, | |
55aa24fb | 9707 | ops, |
8cdf0e15 | 9708 | from_tty, |
84f4c1fe | 9709 | 1 /* enabled */, |
44f238bb PA |
9710 | 0 /* internal */, |
9711 | 0); | |
c906108c SS |
9712 | } |
9713 | ||
c906108c SS |
9714 | /* Helper function for break_command_1 and disassemble_command. */ |
9715 | ||
9716 | void | |
fba45db2 | 9717 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9718 | { |
9719 | CORE_ADDR pc; | |
9720 | ||
9721 | if (sal->pc == 0 && sal->symtab != NULL) | |
9722 | { | |
9723 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9724 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
9725 | sal->line, sal->symtab->filename); |
9726 | sal->pc = pc; | |
6a048695 | 9727 | |
4a64f543 MS |
9728 | /* If this SAL corresponds to a breakpoint inserted using a line |
9729 | number, then skip the function prologue if necessary. */ | |
6a048695 | 9730 | if (sal->explicit_line) |
059acae7 | 9731 | skip_prologue_sal (sal); |
c906108c SS |
9732 | } |
9733 | ||
9734 | if (sal->section == 0 && sal->symtab != NULL) | |
9735 | { | |
9736 | struct blockvector *bv; | |
c5aa993b JM |
9737 | struct block *b; |
9738 | struct symbol *sym; | |
c906108c | 9739 | |
801e3a5b | 9740 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
9741 | if (bv != NULL) |
9742 | { | |
7f0df278 | 9743 | sym = block_linkage_function (b); |
c906108c SS |
9744 | if (sym != NULL) |
9745 | { | |
9746 | fixup_symbol_section (sym, sal->symtab->objfile); | |
714835d5 | 9747 | sal->section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
9748 | } |
9749 | else | |
9750 | { | |
4a64f543 MS |
9751 | /* It really is worthwhile to have the section, so we'll |
9752 | just have to look harder. This case can be executed | |
9753 | if we have line numbers but no functions (as can | |
9754 | happen in assembly source). */ | |
c906108c | 9755 | |
c5aa993b | 9756 | struct minimal_symbol *msym; |
6c95b8df PA |
9757 | struct cleanup *old_chain = save_current_space_and_thread (); |
9758 | ||
9759 | switch_to_program_space_and_thread (sal->pspace); | |
c906108c SS |
9760 | |
9761 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
9762 | if (msym) | |
714835d5 | 9763 | sal->section = SYMBOL_OBJ_SECTION (msym); |
6c95b8df PA |
9764 | |
9765 | do_cleanups (old_chain); | |
c906108c SS |
9766 | } |
9767 | } | |
9768 | } | |
9769 | } | |
9770 | ||
9771 | void | |
fba45db2 | 9772 | break_command (char *arg, int from_tty) |
c906108c | 9773 | { |
db107f19 | 9774 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9775 | } |
9776 | ||
c906108c | 9777 | void |
fba45db2 | 9778 | tbreak_command (char *arg, int from_tty) |
c906108c | 9779 | { |
db107f19 | 9780 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9781 | } |
9782 | ||
c906108c | 9783 | static void |
fba45db2 | 9784 | hbreak_command (char *arg, int from_tty) |
c906108c | 9785 | { |
db107f19 | 9786 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9787 | } |
9788 | ||
9789 | static void | |
fba45db2 | 9790 | thbreak_command (char *arg, int from_tty) |
c906108c | 9791 | { |
db107f19 | 9792 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9793 | } |
9794 | ||
9795 | static void | |
fba45db2 | 9796 | stop_command (char *arg, int from_tty) |
c906108c | 9797 | { |
a3f17187 | 9798 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9799 | Usage: stop in <function | address>\n\ |
a3f17187 | 9800 | stop at <line>\n")); |
c906108c SS |
9801 | } |
9802 | ||
9803 | static void | |
fba45db2 | 9804 | stopin_command (char *arg, int from_tty) |
c906108c SS |
9805 | { |
9806 | int badInput = 0; | |
9807 | ||
c5aa993b | 9808 | if (arg == (char *) NULL) |
c906108c SS |
9809 | badInput = 1; |
9810 | else if (*arg != '*') | |
9811 | { | |
9812 | char *argptr = arg; | |
9813 | int hasColon = 0; | |
9814 | ||
4a64f543 | 9815 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 9816 | say it is bad, otherwise, it should be an address or |
4a64f543 | 9817 | function/method name. */ |
c906108c | 9818 | while (*argptr && !hasColon) |
c5aa993b JM |
9819 | { |
9820 | hasColon = (*argptr == ':'); | |
9821 | argptr++; | |
9822 | } | |
c906108c SS |
9823 | |
9824 | if (hasColon) | |
c5aa993b | 9825 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9826 | else |
c5aa993b | 9827 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9828 | } |
9829 | ||
9830 | if (badInput) | |
a3f17187 | 9831 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9832 | else |
db107f19 | 9833 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9834 | } |
9835 | ||
9836 | static void | |
fba45db2 | 9837 | stopat_command (char *arg, int from_tty) |
c906108c SS |
9838 | { |
9839 | int badInput = 0; | |
9840 | ||
c5aa993b | 9841 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
9842 | badInput = 1; |
9843 | else | |
9844 | { | |
9845 | char *argptr = arg; | |
9846 | int hasColon = 0; | |
9847 | ||
4a64f543 MS |
9848 | /* Look for a ':'. If there is a '::' then get out, otherwise |
9849 | it is probably a line number. */ | |
c906108c | 9850 | while (*argptr && !hasColon) |
c5aa993b JM |
9851 | { |
9852 | hasColon = (*argptr == ':'); | |
9853 | argptr++; | |
9854 | } | |
c906108c SS |
9855 | |
9856 | if (hasColon) | |
c5aa993b | 9857 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 9858 | else |
c5aa993b | 9859 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
9860 | } |
9861 | ||
9862 | if (badInput) | |
a3f17187 | 9863 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 9864 | else |
db107f19 | 9865 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9866 | } |
9867 | ||
e7e0cddf SS |
9868 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9869 | with a prewired command list consisting of a single output command, | |
9870 | built from extra arguments supplied on the dprintf command | |
9871 | line. */ | |
9872 | ||
da821c7b | 9873 | static void |
e7e0cddf SS |
9874 | dprintf_command (char *arg, int from_tty) |
9875 | { | |
9876 | create_breakpoint (get_current_arch (), | |
9877 | arg, | |
9878 | NULL, 0, NULL, 1 /* parse arg */, | |
9879 | 0, bp_dprintf, | |
9880 | 0 /* Ignore count */, | |
9881 | pending_break_support, | |
9882 | &dprintf_breakpoint_ops, | |
9883 | from_tty, | |
9884 | 1 /* enabled */, | |
9885 | 0 /* internal */, | |
9886 | 0); | |
9887 | } | |
9888 | ||
d3ce09f5 SS |
9889 | static void |
9890 | agent_printf_command (char *arg, int from_tty) | |
9891 | { | |
9892 | error (_("May only run agent-printf on the target")); | |
9893 | } | |
9894 | ||
f1310107 TJB |
9895 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
9896 | ranged breakpoints. */ | |
9897 | ||
9898 | static int | |
9899 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
9900 | struct address_space *aspace, | |
09ac7c10 TT |
9901 | CORE_ADDR bp_addr, |
9902 | const struct target_waitstatus *ws) | |
f1310107 | 9903 | { |
09ac7c10 | 9904 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 9905 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
9906 | return 0; |
9907 | ||
f1310107 TJB |
9908 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9909 | bl->length, aspace, bp_addr); | |
9910 | } | |
9911 | ||
9912 | /* Implement the "resources_needed" breakpoint_ops method for | |
9913 | ranged breakpoints. */ | |
9914 | ||
9915 | static int | |
9916 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
9917 | { | |
9918 | return target_ranged_break_num_registers (); | |
9919 | } | |
9920 | ||
9921 | /* Implement the "print_it" breakpoint_ops method for | |
9922 | ranged breakpoints. */ | |
9923 | ||
9924 | static enum print_stop_action | |
348d480f | 9925 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 9926 | { |
348d480f | 9927 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 9928 | struct bp_location *bl = b->loc; |
79a45e25 | 9929 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9930 | |
9931 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9932 | ||
9933 | /* Ranged breakpoints have only one location. */ | |
9934 | gdb_assert (bl && bl->next == NULL); | |
9935 | ||
9936 | annotate_breakpoint (b->number); | |
9937 | if (b->disposition == disp_del) | |
9938 | ui_out_text (uiout, "\nTemporary ranged breakpoint "); | |
9939 | else | |
9940 | ui_out_text (uiout, "\nRanged breakpoint "); | |
9941 | if (ui_out_is_mi_like_p (uiout)) | |
9942 | { | |
9943 | ui_out_field_string (uiout, "reason", | |
9944 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
9945 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
9946 | } | |
9947 | ui_out_field_int (uiout, "bkptno", b->number); | |
9948 | ui_out_text (uiout, ", "); | |
9949 | ||
9950 | return PRINT_SRC_AND_LOC; | |
9951 | } | |
9952 | ||
9953 | /* Implement the "print_one" breakpoint_ops method for | |
9954 | ranged breakpoints. */ | |
9955 | ||
9956 | static void | |
9957 | print_one_ranged_breakpoint (struct breakpoint *b, | |
9958 | struct bp_location **last_loc) | |
9959 | { | |
9960 | struct bp_location *bl = b->loc; | |
9961 | struct value_print_options opts; | |
79a45e25 | 9962 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9963 | |
9964 | /* Ranged breakpoints have only one location. */ | |
9965 | gdb_assert (bl && bl->next == NULL); | |
9966 | ||
9967 | get_user_print_options (&opts); | |
9968 | ||
9969 | if (opts.addressprint) | |
9970 | /* We don't print the address range here, it will be printed later | |
9971 | by print_one_detail_ranged_breakpoint. */ | |
9972 | ui_out_field_skip (uiout, "addr"); | |
9973 | annotate_field (5); | |
9974 | print_breakpoint_location (b, bl); | |
9975 | *last_loc = bl; | |
9976 | } | |
9977 | ||
9978 | /* Implement the "print_one_detail" breakpoint_ops method for | |
9979 | ranged breakpoints. */ | |
9980 | ||
9981 | static void | |
9982 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
9983 | struct ui_out *uiout) | |
9984 | { | |
9985 | CORE_ADDR address_start, address_end; | |
9986 | struct bp_location *bl = b->loc; | |
f99d8bf4 PA |
9987 | struct ui_file *stb = mem_fileopen (); |
9988 | struct cleanup *cleanup = make_cleanup_ui_file_delete (stb); | |
f1310107 TJB |
9989 | |
9990 | gdb_assert (bl); | |
9991 | ||
9992 | address_start = bl->address; | |
9993 | address_end = address_start + bl->length - 1; | |
9994 | ||
9995 | ui_out_text (uiout, "\taddress range: "); | |
f99d8bf4 | 9996 | fprintf_unfiltered (stb, "[%s, %s]", |
f1310107 TJB |
9997 | print_core_address (bl->gdbarch, address_start), |
9998 | print_core_address (bl->gdbarch, address_end)); | |
9999 | ui_out_field_stream (uiout, "addr", stb); | |
10000 | ui_out_text (uiout, "\n"); | |
10001 | ||
10002 | do_cleanups (cleanup); | |
10003 | } | |
10004 | ||
10005 | /* Implement the "print_mention" breakpoint_ops method for | |
10006 | ranged breakpoints. */ | |
10007 | ||
10008 | static void | |
10009 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
10010 | { | |
10011 | struct bp_location *bl = b->loc; | |
79a45e25 | 10012 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
10013 | |
10014 | gdb_assert (bl); | |
10015 | gdb_assert (b->type == bp_hardware_breakpoint); | |
10016 | ||
10017 | if (ui_out_is_mi_like_p (uiout)) | |
10018 | return; | |
10019 | ||
10020 | printf_filtered (_("Hardware assisted ranged breakpoint %d from %s to %s."), | |
10021 | b->number, paddress (bl->gdbarch, bl->address), | |
10022 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
10023 | } | |
10024 | ||
10025 | /* Implement the "print_recreate" breakpoint_ops method for | |
10026 | ranged breakpoints. */ | |
10027 | ||
10028 | static void | |
10029 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
10030 | { | |
10031 | fprintf_unfiltered (fp, "break-range %s, %s", b->addr_string, | |
10032 | b->addr_string_range_end); | |
d9b3f62e | 10033 | print_recreate_thread (b, fp); |
f1310107 TJB |
10034 | } |
10035 | ||
10036 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
10037 | ||
2060206e | 10038 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
10039 | |
10040 | /* Find the address where the end of the breakpoint range should be | |
10041 | placed, given the SAL of the end of the range. This is so that if | |
10042 | the user provides a line number, the end of the range is set to the | |
10043 | last instruction of the given line. */ | |
10044 | ||
10045 | static CORE_ADDR | |
10046 | find_breakpoint_range_end (struct symtab_and_line sal) | |
10047 | { | |
10048 | CORE_ADDR end; | |
10049 | ||
10050 | /* If the user provided a PC value, use it. Otherwise, | |
10051 | find the address of the end of the given location. */ | |
10052 | if (sal.explicit_pc) | |
10053 | end = sal.pc; | |
10054 | else | |
10055 | { | |
10056 | int ret; | |
10057 | CORE_ADDR start; | |
10058 | ||
10059 | ret = find_line_pc_range (sal, &start, &end); | |
10060 | if (!ret) | |
10061 | error (_("Could not find location of the end of the range.")); | |
10062 | ||
10063 | /* find_line_pc_range returns the start of the next line. */ | |
10064 | end--; | |
10065 | } | |
10066 | ||
10067 | return end; | |
10068 | } | |
10069 | ||
10070 | /* Implement the "break-range" CLI command. */ | |
10071 | ||
10072 | static void | |
10073 | break_range_command (char *arg, int from_tty) | |
10074 | { | |
10075 | char *arg_start, *addr_string_start, *addr_string_end; | |
10076 | struct linespec_result canonical_start, canonical_end; | |
10077 | int bp_count, can_use_bp, length; | |
10078 | CORE_ADDR end; | |
10079 | struct breakpoint *b; | |
10080 | struct symtab_and_line sal_start, sal_end; | |
f1310107 | 10081 | struct cleanup *cleanup_bkpt; |
f8eba3c6 | 10082 | struct linespec_sals *lsal_start, *lsal_end; |
f1310107 TJB |
10083 | |
10084 | /* We don't support software ranged breakpoints. */ | |
10085 | if (target_ranged_break_num_registers () < 0) | |
10086 | error (_("This target does not support hardware ranged breakpoints.")); | |
10087 | ||
10088 | bp_count = hw_breakpoint_used_count (); | |
10089 | bp_count += target_ranged_break_num_registers (); | |
10090 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
10091 | bp_count, 0); | |
10092 | if (can_use_bp < 0) | |
10093 | error (_("Hardware breakpoints used exceeds limit.")); | |
10094 | ||
f8eba3c6 | 10095 | arg = skip_spaces (arg); |
f1310107 TJB |
10096 | if (arg == NULL || arg[0] == '\0') |
10097 | error(_("No address range specified.")); | |
10098 | ||
f1310107 TJB |
10099 | init_linespec_result (&canonical_start); |
10100 | ||
f8eba3c6 TT |
10101 | arg_start = arg; |
10102 | parse_breakpoint_sals (&arg, &canonical_start); | |
f1310107 | 10103 | |
f8eba3c6 | 10104 | cleanup_bkpt = make_cleanup_destroy_linespec_result (&canonical_start); |
f1310107 TJB |
10105 | |
10106 | if (arg[0] != ',') | |
10107 | error (_("Too few arguments.")); | |
f8eba3c6 | 10108 | else if (VEC_empty (linespec_sals, canonical_start.sals)) |
f1310107 | 10109 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 TT |
10110 | |
10111 | lsal_start = VEC_index (linespec_sals, canonical_start.sals, 0); | |
10112 | ||
10113 | if (VEC_length (linespec_sals, canonical_start.sals) > 1 | |
10114 | || lsal_start->sals.nelts != 1) | |
f1310107 TJB |
10115 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10116 | ||
f8eba3c6 TT |
10117 | sal_start = lsal_start->sals.sals[0]; |
10118 | addr_string_start = savestring (arg_start, arg - arg_start); | |
10119 | make_cleanup (xfree, addr_string_start); | |
f1310107 TJB |
10120 | |
10121 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 10122 | arg = skip_spaces (arg); |
f1310107 TJB |
10123 | |
10124 | /* Parse the end location. */ | |
10125 | ||
f1310107 TJB |
10126 | init_linespec_result (&canonical_end); |
10127 | arg_start = arg; | |
10128 | ||
f8eba3c6 | 10129 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
10130 | parse_breakpoint_sals because we need to specify the start location's |
10131 | symtab and line as the default symtab and line for the end of the | |
10132 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
10133 | where +14 means 14 lines from the start location. */ | |
f8eba3c6 TT |
10134 | decode_line_full (&arg, DECODE_LINE_FUNFIRSTLINE, |
10135 | sal_start.symtab, sal_start.line, | |
10136 | &canonical_end, NULL, NULL); | |
10137 | ||
10138 | make_cleanup_destroy_linespec_result (&canonical_end); | |
f1310107 | 10139 | |
f8eba3c6 | 10140 | if (VEC_empty (linespec_sals, canonical_end.sals)) |
f1310107 | 10141 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 TT |
10142 | |
10143 | lsal_end = VEC_index (linespec_sals, canonical_end.sals, 0); | |
10144 | if (VEC_length (linespec_sals, canonical_end.sals) > 1 | |
10145 | || lsal_end->sals.nelts != 1) | |
f1310107 TJB |
10146 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10147 | ||
f8eba3c6 TT |
10148 | sal_end = lsal_end->sals.sals[0]; |
10149 | addr_string_end = savestring (arg_start, arg - arg_start); | |
10150 | make_cleanup (xfree, addr_string_end); | |
f1310107 TJB |
10151 | |
10152 | end = find_breakpoint_range_end (sal_end); | |
10153 | if (sal_start.pc > end) | |
177b42fe | 10154 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
10155 | |
10156 | length = end - sal_start.pc + 1; | |
10157 | if (length < 0) | |
10158 | /* Length overflowed. */ | |
10159 | error (_("Address range too large.")); | |
10160 | else if (length == 1) | |
10161 | { | |
10162 | /* This range is simple enough to be handled by | |
10163 | the `hbreak' command. */ | |
10164 | hbreak_command (addr_string_start, 1); | |
10165 | ||
10166 | do_cleanups (cleanup_bkpt); | |
10167 | ||
10168 | return; | |
10169 | } | |
10170 | ||
10171 | /* Now set up the breakpoint. */ | |
10172 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 10173 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
10174 | set_breakpoint_count (breakpoint_count + 1); |
10175 | b->number = breakpoint_count; | |
10176 | b->disposition = disp_donttouch; | |
f8eba3c6 TT |
10177 | b->addr_string = xstrdup (addr_string_start); |
10178 | b->addr_string_range_end = xstrdup (addr_string_end); | |
f1310107 TJB |
10179 | b->loc->length = length; |
10180 | ||
f8eba3c6 | 10181 | do_cleanups (cleanup_bkpt); |
f1310107 TJB |
10182 | |
10183 | mention (b); | |
8d3788bd | 10184 | observer_notify_breakpoint_created (b); |
f1310107 TJB |
10185 | update_global_location_list (1); |
10186 | } | |
10187 | ||
4a64f543 MS |
10188 | /* Return non-zero if EXP is verified as constant. Returned zero |
10189 | means EXP is variable. Also the constant detection may fail for | |
10190 | some constant expressions and in such case still falsely return | |
10191 | zero. */ | |
2e6e3d9c | 10192 | |
65d79d4b SDJ |
10193 | static int |
10194 | watchpoint_exp_is_const (const struct expression *exp) | |
10195 | { | |
10196 | int i = exp->nelts; | |
10197 | ||
10198 | while (i > 0) | |
10199 | { | |
10200 | int oplenp, argsp; | |
10201 | ||
10202 | /* We are only interested in the descriptor of each element. */ | |
10203 | operator_length (exp, i, &oplenp, &argsp); | |
10204 | i -= oplenp; | |
10205 | ||
10206 | switch (exp->elts[i].opcode) | |
10207 | { | |
10208 | case BINOP_ADD: | |
10209 | case BINOP_SUB: | |
10210 | case BINOP_MUL: | |
10211 | case BINOP_DIV: | |
10212 | case BINOP_REM: | |
10213 | case BINOP_MOD: | |
10214 | case BINOP_LSH: | |
10215 | case BINOP_RSH: | |
10216 | case BINOP_LOGICAL_AND: | |
10217 | case BINOP_LOGICAL_OR: | |
10218 | case BINOP_BITWISE_AND: | |
10219 | case BINOP_BITWISE_IOR: | |
10220 | case BINOP_BITWISE_XOR: | |
10221 | case BINOP_EQUAL: | |
10222 | case BINOP_NOTEQUAL: | |
10223 | case BINOP_LESS: | |
10224 | case BINOP_GTR: | |
10225 | case BINOP_LEQ: | |
10226 | case BINOP_GEQ: | |
10227 | case BINOP_REPEAT: | |
10228 | case BINOP_COMMA: | |
10229 | case BINOP_EXP: | |
10230 | case BINOP_MIN: | |
10231 | case BINOP_MAX: | |
10232 | case BINOP_INTDIV: | |
10233 | case BINOP_CONCAT: | |
10234 | case BINOP_IN: | |
10235 | case BINOP_RANGE: | |
10236 | case TERNOP_COND: | |
10237 | case TERNOP_SLICE: | |
65d79d4b SDJ |
10238 | |
10239 | case OP_LONG: | |
10240 | case OP_DOUBLE: | |
10241 | case OP_DECFLOAT: | |
10242 | case OP_LAST: | |
10243 | case OP_COMPLEX: | |
10244 | case OP_STRING: | |
65d79d4b SDJ |
10245 | case OP_ARRAY: |
10246 | case OP_TYPE: | |
608b4967 TT |
10247 | case OP_TYPEOF: |
10248 | case OP_DECLTYPE: | |
65d79d4b SDJ |
10249 | case OP_NAME: |
10250 | case OP_OBJC_NSSTRING: | |
10251 | ||
10252 | case UNOP_NEG: | |
10253 | case UNOP_LOGICAL_NOT: | |
10254 | case UNOP_COMPLEMENT: | |
10255 | case UNOP_ADDR: | |
10256 | case UNOP_HIGH: | |
aeaa2474 | 10257 | case UNOP_CAST: |
9eaf6705 TT |
10258 | |
10259 | case UNOP_CAST_TYPE: | |
10260 | case UNOP_REINTERPRET_CAST: | |
10261 | case UNOP_DYNAMIC_CAST: | |
4a64f543 MS |
10262 | /* Unary, binary and ternary operators: We have to check |
10263 | their operands. If they are constant, then so is the | |
10264 | result of that operation. For instance, if A and B are | |
10265 | determined to be constants, then so is "A + B". | |
10266 | ||
10267 | UNOP_IND is one exception to the rule above, because the | |
10268 | value of *ADDR is not necessarily a constant, even when | |
10269 | ADDR is. */ | |
65d79d4b SDJ |
10270 | break; |
10271 | ||
10272 | case OP_VAR_VALUE: | |
10273 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 10274 | |
65d79d4b | 10275 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
10276 | possible that a buggy compiler could mark a variable as |
10277 | constant even when it is not, and TYPE_CONST would return | |
10278 | true in this case, while SYMBOL_CLASS wouldn't. | |
10279 | ||
10280 | We also have to check for function symbols because they | |
10281 | are always constant. */ | |
65d79d4b SDJ |
10282 | { |
10283 | struct symbol *s = exp->elts[i + 2].symbol; | |
10284 | ||
10285 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
10286 | && SYMBOL_CLASS (s) != LOC_CONST | |
10287 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
10288 | return 0; | |
10289 | break; | |
10290 | } | |
10291 | ||
10292 | /* The default action is to return 0 because we are using | |
10293 | the optimistic approach here: If we don't know something, | |
10294 | then it is not a constant. */ | |
10295 | default: | |
10296 | return 0; | |
10297 | } | |
10298 | } | |
10299 | ||
10300 | return 1; | |
10301 | } | |
10302 | ||
3a5c3e22 PA |
10303 | /* Implement the "dtor" breakpoint_ops method for watchpoints. */ |
10304 | ||
10305 | static void | |
10306 | dtor_watchpoint (struct breakpoint *self) | |
10307 | { | |
10308 | struct watchpoint *w = (struct watchpoint *) self; | |
10309 | ||
10310 | xfree (w->cond_exp); | |
10311 | xfree (w->exp); | |
10312 | xfree (w->exp_string); | |
10313 | xfree (w->exp_string_reparse); | |
10314 | value_free (w->val); | |
10315 | ||
10316 | base_breakpoint_ops.dtor (self); | |
10317 | } | |
10318 | ||
348d480f PA |
10319 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
10320 | ||
10321 | static void | |
10322 | re_set_watchpoint (struct breakpoint *b) | |
10323 | { | |
3a5c3e22 PA |
10324 | struct watchpoint *w = (struct watchpoint *) b; |
10325 | ||
348d480f PA |
10326 | /* Watchpoint can be either on expression using entirely global |
10327 | variables, or it can be on local variables. | |
10328 | ||
10329 | Watchpoints of the first kind are never auto-deleted, and even | |
10330 | persist across program restarts. Since they can use variables | |
10331 | from shared libraries, we need to reparse expression as libraries | |
10332 | are loaded and unloaded. | |
10333 | ||
10334 | Watchpoints on local variables can also change meaning as result | |
10335 | of solib event. For example, if a watchpoint uses both a local | |
10336 | and a global variables in expression, it's a local watchpoint, | |
10337 | but unloading of a shared library will make the expression | |
10338 | invalid. This is not a very common use case, but we still | |
10339 | re-evaluate expression, to avoid surprises to the user. | |
10340 | ||
10341 | Note that for local watchpoints, we re-evaluate it only if | |
10342 | watchpoints frame id is still valid. If it's not, it means the | |
10343 | watchpoint is out of scope and will be deleted soon. In fact, | |
10344 | I'm not sure we'll ever be called in this case. | |
10345 | ||
10346 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10347 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10348 | |
3a5c3e22 PA |
10349 | Don't do anything about disabled watchpoints, since they will be |
10350 | reevaluated again when enabled. */ | |
10351 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10352 | } |
10353 | ||
77b06cd7 TJB |
10354 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10355 | ||
10356 | static int | |
10357 | insert_watchpoint (struct bp_location *bl) | |
10358 | { | |
3a5c3e22 PA |
10359 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10360 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10361 | |
10362 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 10363 | w->cond_exp); |
77b06cd7 TJB |
10364 | } |
10365 | ||
10366 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10367 | ||
10368 | static int | |
10369 | remove_watchpoint (struct bp_location *bl) | |
10370 | { | |
3a5c3e22 PA |
10371 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10372 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10373 | |
10374 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 10375 | w->cond_exp); |
e09342b5 TJB |
10376 | } |
10377 | ||
e09342b5 | 10378 | static int |
348d480f | 10379 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
09ac7c10 TT |
10380 | struct address_space *aspace, CORE_ADDR bp_addr, |
10381 | const struct target_waitstatus *ws) | |
e09342b5 | 10382 | { |
348d480f | 10383 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10384 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10385 | |
348d480f PA |
10386 | /* Continuable hardware watchpoints are treated as non-existent if the |
10387 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10388 | some data address). Otherwise gdb won't stop on a break instruction | |
10389 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10390 | been defined. Also skip watchpoints which we know did not trigger | |
10391 | (did not match the data address). */ | |
10392 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10393 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10394 | return 0; |
9c06b0b4 | 10395 | |
348d480f | 10396 | return 1; |
9c06b0b4 TJB |
10397 | } |
10398 | ||
348d480f PA |
10399 | static void |
10400 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10401 | { |
348d480f | 10402 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10403 | |
348d480f | 10404 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10405 | } |
10406 | ||
10407 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10408 | hardware watchpoints. */ |
9c06b0b4 TJB |
10409 | |
10410 | static int | |
348d480f | 10411 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10412 | { |
3a5c3e22 PA |
10413 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10414 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10415 | |
10416 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10417 | } |
10418 | ||
10419 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10420 | hardware watchpoints. */ |
9c06b0b4 TJB |
10421 | |
10422 | static int | |
348d480f | 10423 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10424 | { |
efa80663 PA |
10425 | /* Read and access watchpoints only work with hardware support. */ |
10426 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10427 | } |
10428 | ||
9c06b0b4 | 10429 | static enum print_stop_action |
348d480f | 10430 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10431 | { |
348d480f PA |
10432 | struct cleanup *old_chain; |
10433 | struct breakpoint *b; | |
10434 | const struct bp_location *bl; | |
f99d8bf4 | 10435 | struct ui_file *stb; |
348d480f | 10436 | enum print_stop_action result; |
3a5c3e22 | 10437 | struct watchpoint *w; |
79a45e25 | 10438 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10439 | |
10440 | gdb_assert (bs->bp_location_at != NULL); | |
10441 | ||
10442 | bl = bs->bp_location_at; | |
10443 | b = bs->breakpoint_at; | |
3a5c3e22 | 10444 | w = (struct watchpoint *) b; |
348d480f | 10445 | |
f99d8bf4 PA |
10446 | stb = mem_fileopen (); |
10447 | old_chain = make_cleanup_ui_file_delete (stb); | |
9c06b0b4 TJB |
10448 | |
10449 | switch (b->type) | |
10450 | { | |
348d480f | 10451 | case bp_watchpoint: |
9c06b0b4 TJB |
10452 | case bp_hardware_watchpoint: |
10453 | annotate_watchpoint (b->number); | |
10454 | if (ui_out_is_mi_like_p (uiout)) | |
10455 | ui_out_field_string | |
10456 | (uiout, "reason", | |
10457 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10458 | mention (b); |
10459 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10460 | ui_out_text (uiout, "\nOld value = "); | |
f99d8bf4 | 10461 | watchpoint_value_print (bs->old_val, stb); |
348d480f PA |
10462 | ui_out_field_stream (uiout, "old", stb); |
10463 | ui_out_text (uiout, "\nNew value = "); | |
f99d8bf4 | 10464 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10465 | ui_out_field_stream (uiout, "new", stb); |
10466 | ui_out_text (uiout, "\n"); | |
10467 | /* More than one watchpoint may have been triggered. */ | |
10468 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10469 | break; |
10470 | ||
10471 | case bp_read_watchpoint: | |
10472 | if (ui_out_is_mi_like_p (uiout)) | |
10473 | ui_out_field_string | |
10474 | (uiout, "reason", | |
10475 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10476 | mention (b); |
10477 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10478 | ui_out_text (uiout, "\nValue = "); | |
f99d8bf4 | 10479 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10480 | ui_out_field_stream (uiout, "value", stb); |
10481 | ui_out_text (uiout, "\n"); | |
10482 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10483 | break; |
10484 | ||
10485 | case bp_access_watchpoint: | |
348d480f PA |
10486 | if (bs->old_val != NULL) |
10487 | { | |
10488 | annotate_watchpoint (b->number); | |
10489 | if (ui_out_is_mi_like_p (uiout)) | |
10490 | ui_out_field_string | |
10491 | (uiout, "reason", | |
10492 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10493 | mention (b); | |
10494 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10495 | ui_out_text (uiout, "\nOld value = "); | |
f99d8bf4 | 10496 | watchpoint_value_print (bs->old_val, stb); |
348d480f PA |
10497 | ui_out_field_stream (uiout, "old", stb); |
10498 | ui_out_text (uiout, "\nNew value = "); | |
10499 | } | |
10500 | else | |
10501 | { | |
10502 | mention (b); | |
10503 | if (ui_out_is_mi_like_p (uiout)) | |
10504 | ui_out_field_string | |
10505 | (uiout, "reason", | |
10506 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10507 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10508 | ui_out_text (uiout, "\nValue = "); | |
10509 | } | |
f99d8bf4 | 10510 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10511 | ui_out_field_stream (uiout, "new", stb); |
10512 | ui_out_text (uiout, "\n"); | |
10513 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10514 | break; |
10515 | default: | |
348d480f | 10516 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10517 | } |
10518 | ||
348d480f PA |
10519 | do_cleanups (old_chain); |
10520 | return result; | |
10521 | } | |
10522 | ||
10523 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10524 | watchpoints. */ | |
10525 | ||
10526 | static void | |
10527 | print_mention_watchpoint (struct breakpoint *b) | |
10528 | { | |
10529 | struct cleanup *ui_out_chain; | |
3a5c3e22 | 10530 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10531 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10532 | |
10533 | switch (b->type) | |
10534 | { | |
10535 | case bp_watchpoint: | |
10536 | ui_out_text (uiout, "Watchpoint "); | |
10537 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10538 | break; | |
10539 | case bp_hardware_watchpoint: | |
10540 | ui_out_text (uiout, "Hardware watchpoint "); | |
10541 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10542 | break; | |
10543 | case bp_read_watchpoint: | |
10544 | ui_out_text (uiout, "Hardware read watchpoint "); | |
10545 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
10546 | break; | |
10547 | case bp_access_watchpoint: | |
10548 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
10549 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
10550 | break; | |
10551 | default: | |
10552 | internal_error (__FILE__, __LINE__, | |
10553 | _("Invalid hardware watchpoint type.")); | |
10554 | } | |
10555 | ||
10556 | ui_out_field_int (uiout, "number", b->number); | |
10557 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 10558 | ui_out_field_string (uiout, "exp", w->exp_string); |
348d480f PA |
10559 | do_cleanups (ui_out_chain); |
10560 | } | |
10561 | ||
10562 | /* Implement the "print_recreate" breakpoint_ops method for | |
10563 | watchpoints. */ | |
10564 | ||
10565 | static void | |
10566 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10567 | { | |
3a5c3e22 PA |
10568 | struct watchpoint *w = (struct watchpoint *) b; |
10569 | ||
348d480f PA |
10570 | switch (b->type) |
10571 | { | |
10572 | case bp_watchpoint: | |
10573 | case bp_hardware_watchpoint: | |
10574 | fprintf_unfiltered (fp, "watch"); | |
10575 | break; | |
10576 | case bp_read_watchpoint: | |
10577 | fprintf_unfiltered (fp, "rwatch"); | |
10578 | break; | |
10579 | case bp_access_watchpoint: | |
10580 | fprintf_unfiltered (fp, "awatch"); | |
10581 | break; | |
10582 | default: | |
10583 | internal_error (__FILE__, __LINE__, | |
10584 | _("Invalid watchpoint type.")); | |
10585 | } | |
10586 | ||
3a5c3e22 | 10587 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10588 | print_recreate_thread (b, fp); |
348d480f PA |
10589 | } |
10590 | ||
10591 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ | |
10592 | ||
2060206e | 10593 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10594 | |
10595 | /* Implement the "insert" breakpoint_ops method for | |
10596 | masked hardware watchpoints. */ | |
10597 | ||
10598 | static int | |
10599 | insert_masked_watchpoint (struct bp_location *bl) | |
10600 | { | |
3a5c3e22 PA |
10601 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10602 | ||
10603 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10604 | bl->watchpoint_type); |
10605 | } | |
10606 | ||
10607 | /* Implement the "remove" breakpoint_ops method for | |
10608 | masked hardware watchpoints. */ | |
10609 | ||
10610 | static int | |
10611 | remove_masked_watchpoint (struct bp_location *bl) | |
10612 | { | |
3a5c3e22 PA |
10613 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10614 | ||
10615 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10616 | bl->watchpoint_type); |
10617 | } | |
10618 | ||
10619 | /* Implement the "resources_needed" breakpoint_ops method for | |
10620 | masked hardware watchpoints. */ | |
10621 | ||
10622 | static int | |
10623 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10624 | { | |
3a5c3e22 PA |
10625 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10626 | ||
10627 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10628 | } |
10629 | ||
10630 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10631 | masked hardware watchpoints. */ | |
10632 | ||
10633 | static int | |
10634 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10635 | { | |
10636 | return 0; | |
10637 | } | |
10638 | ||
10639 | /* Implement the "print_it" breakpoint_ops method for | |
10640 | masked hardware watchpoints. */ | |
10641 | ||
10642 | static enum print_stop_action | |
10643 | print_it_masked_watchpoint (bpstat bs) | |
10644 | { | |
10645 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10646 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10647 | |
10648 | /* Masked watchpoints have only one location. */ | |
10649 | gdb_assert (b->loc && b->loc->next == NULL); | |
10650 | ||
10651 | switch (b->type) | |
10652 | { | |
10653 | case bp_hardware_watchpoint: | |
10654 | annotate_watchpoint (b->number); | |
10655 | if (ui_out_is_mi_like_p (uiout)) | |
10656 | ui_out_field_string | |
10657 | (uiout, "reason", | |
10658 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
10659 | break; | |
10660 | ||
10661 | case bp_read_watchpoint: | |
10662 | if (ui_out_is_mi_like_p (uiout)) | |
10663 | ui_out_field_string | |
10664 | (uiout, "reason", | |
10665 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
10666 | break; | |
10667 | ||
10668 | case bp_access_watchpoint: | |
10669 | if (ui_out_is_mi_like_p (uiout)) | |
10670 | ui_out_field_string | |
10671 | (uiout, "reason", | |
10672 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10673 | break; | |
10674 | default: | |
10675 | internal_error (__FILE__, __LINE__, | |
10676 | _("Invalid hardware watchpoint type.")); | |
10677 | } | |
10678 | ||
10679 | mention (b); | |
9c06b0b4 TJB |
10680 | ui_out_text (uiout, _("\n\ |
10681 | Check the underlying instruction at PC for the memory\n\ | |
10682 | address and value which triggered this watchpoint.\n")); | |
10683 | ui_out_text (uiout, "\n"); | |
10684 | ||
10685 | /* More than one watchpoint may have been triggered. */ | |
10686 | return PRINT_UNKNOWN; | |
10687 | } | |
10688 | ||
10689 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10690 | masked hardware watchpoints. */ | |
10691 | ||
10692 | static void | |
10693 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10694 | struct ui_out *uiout) | |
10695 | { | |
3a5c3e22 PA |
10696 | struct watchpoint *w = (struct watchpoint *) b; |
10697 | ||
9c06b0b4 TJB |
10698 | /* Masked watchpoints have only one location. */ |
10699 | gdb_assert (b->loc && b->loc->next == NULL); | |
10700 | ||
10701 | ui_out_text (uiout, "\tmask "); | |
3a5c3e22 | 10702 | ui_out_field_core_addr (uiout, "mask", b->loc->gdbarch, w->hw_wp_mask); |
9c06b0b4 TJB |
10703 | ui_out_text (uiout, "\n"); |
10704 | } | |
10705 | ||
10706 | /* Implement the "print_mention" breakpoint_ops method for | |
10707 | masked hardware watchpoints. */ | |
10708 | ||
10709 | static void | |
10710 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10711 | { | |
3a5c3e22 | 10712 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10713 | struct ui_out *uiout = current_uiout; |
9c06b0b4 TJB |
10714 | struct cleanup *ui_out_chain; |
10715 | ||
10716 | switch (b->type) | |
10717 | { | |
10718 | case bp_hardware_watchpoint: | |
10719 | ui_out_text (uiout, "Masked hardware watchpoint "); | |
10720 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10721 | break; | |
10722 | case bp_read_watchpoint: | |
10723 | ui_out_text (uiout, "Masked hardware read watchpoint "); | |
10724 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
10725 | break; | |
10726 | case bp_access_watchpoint: | |
10727 | ui_out_text (uiout, "Masked hardware access (read/write) watchpoint "); | |
10728 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
10729 | break; | |
10730 | default: | |
10731 | internal_error (__FILE__, __LINE__, | |
10732 | _("Invalid hardware watchpoint type.")); | |
10733 | } | |
10734 | ||
10735 | ui_out_field_int (uiout, "number", b->number); | |
10736 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 10737 | ui_out_field_string (uiout, "exp", w->exp_string); |
9c06b0b4 TJB |
10738 | do_cleanups (ui_out_chain); |
10739 | } | |
10740 | ||
10741 | /* Implement the "print_recreate" breakpoint_ops method for | |
10742 | masked hardware watchpoints. */ | |
10743 | ||
10744 | static void | |
10745 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10746 | { | |
3a5c3e22 | 10747 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10748 | char tmp[40]; |
10749 | ||
10750 | switch (b->type) | |
10751 | { | |
10752 | case bp_hardware_watchpoint: | |
10753 | fprintf_unfiltered (fp, "watch"); | |
10754 | break; | |
10755 | case bp_read_watchpoint: | |
10756 | fprintf_unfiltered (fp, "rwatch"); | |
10757 | break; | |
10758 | case bp_access_watchpoint: | |
10759 | fprintf_unfiltered (fp, "awatch"); | |
10760 | break; | |
10761 | default: | |
10762 | internal_error (__FILE__, __LINE__, | |
10763 | _("Invalid hardware watchpoint type.")); | |
10764 | } | |
10765 | ||
3a5c3e22 PA |
10766 | sprintf_vma (tmp, w->hw_wp_mask); |
10767 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 10768 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10769 | } |
10770 | ||
10771 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10772 | ||
2060206e | 10773 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10774 | |
10775 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10776 | ||
10777 | static int | |
10778 | is_masked_watchpoint (const struct breakpoint *b) | |
10779 | { | |
10780 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10781 | } | |
10782 | ||
53a5351d JM |
10783 | /* accessflag: hw_write: watch write, |
10784 | hw_read: watch read, | |
10785 | hw_access: watch access (read or write) */ | |
c906108c | 10786 | static void |
84f4c1fe PM |
10787 | watch_command_1 (char *arg, int accessflag, int from_tty, |
10788 | int just_location, int internal) | |
c906108c | 10789 | { |
a9634178 | 10790 | volatile struct gdb_exception e; |
d983da9c | 10791 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c | 10792 | struct expression *exp; |
270140bd | 10793 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
a1442452 | 10794 | struct value *val, *mark, *result; |
c906108c | 10795 | struct frame_info *frame; |
c906108c SS |
10796 | char *exp_start = NULL; |
10797 | char *exp_end = NULL; | |
9c06b0b4 TJB |
10798 | char *tok, *end_tok; |
10799 | int toklen = -1; | |
c906108c SS |
10800 | char *cond_start = NULL; |
10801 | char *cond_end = NULL; | |
c906108c | 10802 | enum bptype bp_type; |
37e4754d | 10803 | int thread = -1; |
0cf6dd15 | 10804 | int pc = 0; |
9c06b0b4 TJB |
10805 | /* Flag to indicate whether we are going to use masks for |
10806 | the hardware watchpoint. */ | |
10807 | int use_mask = 0; | |
10808 | CORE_ADDR mask = 0; | |
3a5c3e22 | 10809 | struct watchpoint *w; |
c906108c | 10810 | |
37e4754d LM |
10811 | /* Make sure that we actually have parameters to parse. */ |
10812 | if (arg != NULL && arg[0] != '\0') | |
10813 | { | |
9c06b0b4 | 10814 | char *value_start; |
37e4754d | 10815 | |
9c06b0b4 TJB |
10816 | /* Look for "parameter value" pairs at the end |
10817 | of the arguments string. */ | |
10818 | for (tok = arg + strlen (arg) - 1; tok > arg; tok--) | |
10819 | { | |
10820 | /* Skip whitespace at the end of the argument list. */ | |
10821 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10822 | tok--; | |
10823 | ||
10824 | /* Find the beginning of the last token. | |
10825 | This is the value of the parameter. */ | |
10826 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10827 | tok--; | |
10828 | value_start = tok + 1; | |
10829 | ||
10830 | /* Skip whitespace. */ | |
10831 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10832 | tok--; | |
10833 | ||
10834 | end_tok = tok; | |
10835 | ||
10836 | /* Find the beginning of the second to last token. | |
10837 | This is the parameter itself. */ | |
10838 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10839 | tok--; | |
10840 | tok++; | |
10841 | toklen = end_tok - tok + 1; | |
10842 | ||
10843 | if (toklen == 6 && !strncmp (tok, "thread", 6)) | |
10844 | { | |
10845 | /* At this point we've found a "thread" token, which means | |
10846 | the user is trying to set a watchpoint that triggers | |
10847 | only in a specific thread. */ | |
10848 | char *endp; | |
37e4754d | 10849 | |
9c06b0b4 TJB |
10850 | if (thread != -1) |
10851 | error(_("You can specify only one thread.")); | |
37e4754d | 10852 | |
9c06b0b4 TJB |
10853 | /* Extract the thread ID from the next token. */ |
10854 | thread = strtol (value_start, &endp, 0); | |
37e4754d | 10855 | |
9c06b0b4 TJB |
10856 | /* Check if the user provided a valid numeric value for the |
10857 | thread ID. */ | |
10858 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
10859 | error (_("Invalid thread ID specification %s."), value_start); | |
10860 | ||
10861 | /* Check if the thread actually exists. */ | |
10862 | if (!valid_thread_id (thread)) | |
af4908ba | 10863 | invalid_thread_id_error (thread); |
9c06b0b4 TJB |
10864 | } |
10865 | else if (toklen == 4 && !strncmp (tok, "mask", 4)) | |
10866 | { | |
10867 | /* We've found a "mask" token, which means the user wants to | |
10868 | create a hardware watchpoint that is going to have the mask | |
10869 | facility. */ | |
10870 | struct value *mask_value, *mark; | |
37e4754d | 10871 | |
9c06b0b4 TJB |
10872 | if (use_mask) |
10873 | error(_("You can specify only one mask.")); | |
37e4754d | 10874 | |
9c06b0b4 | 10875 | use_mask = just_location = 1; |
37e4754d | 10876 | |
9c06b0b4 TJB |
10877 | mark = value_mark (); |
10878 | mask_value = parse_to_comma_and_eval (&value_start); | |
10879 | mask = value_as_address (mask_value); | |
10880 | value_free_to_mark (mark); | |
10881 | } | |
10882 | else | |
10883 | /* We didn't recognize what we found. We should stop here. */ | |
10884 | break; | |
37e4754d | 10885 | |
9c06b0b4 TJB |
10886 | /* Truncate the string and get rid of the "parameter value" pair before |
10887 | the arguments string is parsed by the parse_exp_1 function. */ | |
10888 | *tok = '\0'; | |
10889 | } | |
37e4754d LM |
10890 | } |
10891 | ||
10892 | /* Parse the rest of the arguments. */ | |
c906108c SS |
10893 | innermost_block = NULL; |
10894 | exp_start = arg; | |
1bb9788d | 10895 | exp = parse_exp_1 (&arg, 0, 0, 0); |
c906108c | 10896 | exp_end = arg; |
fa8a61dc TT |
10897 | /* Remove trailing whitespace from the expression before saving it. |
10898 | This makes the eventual display of the expression string a bit | |
10899 | prettier. */ | |
10900 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10901 | --exp_end; | |
10902 | ||
65d79d4b SDJ |
10903 | /* Checking if the expression is not constant. */ |
10904 | if (watchpoint_exp_is_const (exp)) | |
10905 | { | |
10906 | int len; | |
10907 | ||
10908 | len = exp_end - exp_start; | |
10909 | while (len > 0 && isspace (exp_start[len - 1])) | |
10910 | len--; | |
10911 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10912 | } | |
10913 | ||
c906108c SS |
10914 | exp_valid_block = innermost_block; |
10915 | mark = value_mark (); | |
a1442452 | 10916 | fetch_subexp_value (exp, &pc, &val, &result, NULL); |
06a64a0b TT |
10917 | |
10918 | if (just_location) | |
10919 | { | |
9c06b0b4 TJB |
10920 | int ret; |
10921 | ||
06a64a0b | 10922 | exp_valid_block = NULL; |
a1442452 | 10923 | val = value_addr (result); |
06a64a0b TT |
10924 | release_value (val); |
10925 | value_free_to_mark (mark); | |
9c06b0b4 TJB |
10926 | |
10927 | if (use_mask) | |
10928 | { | |
10929 | ret = target_masked_watch_num_registers (value_as_address (val), | |
10930 | mask); | |
10931 | if (ret == -1) | |
10932 | error (_("This target does not support masked watchpoints.")); | |
10933 | else if (ret == -2) | |
10934 | error (_("Invalid mask or memory region.")); | |
10935 | } | |
06a64a0b TT |
10936 | } |
10937 | else if (val != NULL) | |
fa4727a6 | 10938 | release_value (val); |
c906108c | 10939 | |
e9cafbcc TT |
10940 | tok = skip_spaces (arg); |
10941 | end_tok = skip_to_space (tok); | |
c906108c SS |
10942 | |
10943 | toklen = end_tok - tok; | |
10944 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10945 | { | |
2d134ed3 PA |
10946 | struct expression *cond; |
10947 | ||
60e1c644 | 10948 | innermost_block = NULL; |
c906108c | 10949 | tok = cond_start = end_tok + 1; |
1bb9788d | 10950 | cond = parse_exp_1 (&tok, 0, 0, 0); |
60e1c644 PA |
10951 | |
10952 | /* The watchpoint expression may not be local, but the condition | |
10953 | may still be. E.g.: `watch global if local > 0'. */ | |
10954 | cond_exp_valid_block = innermost_block; | |
10955 | ||
2d134ed3 | 10956 | xfree (cond); |
c906108c SS |
10957 | cond_end = tok; |
10958 | } | |
10959 | if (*tok) | |
8a3fe4f8 | 10960 | error (_("Junk at end of command.")); |
c906108c | 10961 | |
53a5351d | 10962 | if (accessflag == hw_read) |
c5aa993b | 10963 | bp_type = bp_read_watchpoint; |
53a5351d | 10964 | else if (accessflag == hw_access) |
c5aa993b JM |
10965 | bp_type = bp_access_watchpoint; |
10966 | else | |
10967 | bp_type = bp_hardware_watchpoint; | |
c906108c | 10968 | |
d983da9c | 10969 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
10970 | |
10971 | /* If the expression is "local", then set up a "watchpoint scope" | |
10972 | breakpoint at the point where we've left the scope of the watchpoint | |
10973 | expression. Create the scope breakpoint before the watchpoint, so | |
10974 | that we will encounter it first in bpstat_stop_status. */ | |
60e1c644 | 10975 | if (exp_valid_block && frame) |
d983da9c | 10976 | { |
edb3359d DJ |
10977 | if (frame_id_p (frame_unwind_caller_id (frame))) |
10978 | { | |
10979 | scope_breakpoint | |
a6d9a66e UW |
10980 | = create_internal_breakpoint (frame_unwind_caller_arch (frame), |
10981 | frame_unwind_caller_pc (frame), | |
06edf0c0 PA |
10982 | bp_watchpoint_scope, |
10983 | &momentary_breakpoint_ops); | |
d983da9c | 10984 | |
edb3359d | 10985 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10986 | |
edb3359d DJ |
10987 | /* Automatically delete the breakpoint when it hits. */ |
10988 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10989 | |
edb3359d DJ |
10990 | /* Only break in the proper frame (help with recursion). */ |
10991 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 10992 | |
edb3359d | 10993 | /* Set the address at which we will stop. */ |
a6d9a66e UW |
10994 | scope_breakpoint->loc->gdbarch |
10995 | = frame_unwind_caller_arch (frame); | |
edb3359d DJ |
10996 | scope_breakpoint->loc->requested_address |
10997 | = frame_unwind_caller_pc (frame); | |
10998 | scope_breakpoint->loc->address | |
a6d9a66e UW |
10999 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
11000 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
11001 | scope_breakpoint->type); |
11002 | } | |
d983da9c DJ |
11003 | } |
11004 | ||
c906108c | 11005 | /* Now set up the breakpoint. */ |
3a5c3e22 PA |
11006 | |
11007 | w = XCNEW (struct watchpoint); | |
11008 | b = &w->base; | |
348d480f | 11009 | if (use_mask) |
3a5c3e22 PA |
11010 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
11011 | &masked_watchpoint_breakpoint_ops); | |
348d480f | 11012 | else |
3a5c3e22 PA |
11013 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
11014 | &watchpoint_breakpoint_ops); | |
37e4754d | 11015 | b->thread = thread; |
b5de0fa7 | 11016 | b->disposition = disp_donttouch; |
348d480f | 11017 | b->pspace = current_program_space; |
3a5c3e22 PA |
11018 | w->exp = exp; |
11019 | w->exp_valid_block = exp_valid_block; | |
11020 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
11021 | if (just_location) |
11022 | { | |
11023 | struct type *t = value_type (val); | |
11024 | CORE_ADDR addr = value_as_address (val); | |
11025 | char *name; | |
11026 | ||
11027 | t = check_typedef (TYPE_TARGET_TYPE (check_typedef (t))); | |
11028 | name = type_to_string (t); | |
11029 | ||
3a5c3e22 | 11030 | w->exp_string_reparse = xstrprintf ("* (%s *) %s", name, |
d63d0675 | 11031 | core_addr_to_string (addr)); |
06a64a0b TT |
11032 | xfree (name); |
11033 | ||
3a5c3e22 | 11034 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 JK |
11035 | (int) (exp_end - exp_start), exp_start); |
11036 | ||
06a64a0b TT |
11037 | /* The above expression is in C. */ |
11038 | b->language = language_c; | |
11039 | } | |
11040 | else | |
3a5c3e22 | 11041 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
11042 | |
11043 | if (use_mask) | |
11044 | { | |
3a5c3e22 | 11045 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
11046 | } |
11047 | else | |
11048 | { | |
3a5c3e22 PA |
11049 | w->val = val; |
11050 | w->val_valid = 1; | |
9c06b0b4 | 11051 | } |
77b06cd7 | 11052 | |
c906108c SS |
11053 | if (cond_start) |
11054 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
11055 | else | |
11056 | b->cond_string = 0; | |
c5aa993b | 11057 | |
c906108c | 11058 | if (frame) |
f6bc2008 | 11059 | { |
3a5c3e22 PA |
11060 | w->watchpoint_frame = get_frame_id (frame); |
11061 | w->watchpoint_thread = inferior_ptid; | |
f6bc2008 | 11062 | } |
c906108c | 11063 | else |
f6bc2008 | 11064 | { |
3a5c3e22 PA |
11065 | w->watchpoint_frame = null_frame_id; |
11066 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 11067 | } |
c906108c | 11068 | |
d983da9c | 11069 | if (scope_breakpoint != NULL) |
c906108c | 11070 | { |
d983da9c DJ |
11071 | /* The scope breakpoint is related to the watchpoint. We will |
11072 | need to act on them together. */ | |
11073 | b->related_breakpoint = scope_breakpoint; | |
11074 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 11075 | } |
d983da9c | 11076 | |
06a64a0b TT |
11077 | if (!just_location) |
11078 | value_free_to_mark (mark); | |
2d134ed3 | 11079 | |
a9634178 TJB |
11080 | TRY_CATCH (e, RETURN_MASK_ALL) |
11081 | { | |
11082 | /* Finally update the new watchpoint. This creates the locations | |
11083 | that should be inserted. */ | |
3a5c3e22 | 11084 | update_watchpoint (w, 1); |
a9634178 TJB |
11085 | } |
11086 | if (e.reason < 0) | |
11087 | { | |
11088 | delete_breakpoint (b); | |
11089 | throw_exception (e); | |
11090 | } | |
11091 | ||
3ea46bff | 11092 | install_breakpoint (internal, b, 1); |
c906108c SS |
11093 | } |
11094 | ||
e09342b5 | 11095 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 11096 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 11097 | |
c906108c | 11098 | static int |
a9634178 | 11099 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
11100 | { |
11101 | int found_memory_cnt = 0; | |
2e70b7b9 | 11102 | struct value *head = v; |
c906108c SS |
11103 | |
11104 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 11105 | if (!can_use_hw_watchpoints) |
c906108c | 11106 | return 0; |
c5aa993b | 11107 | |
5c44784c JM |
11108 | /* Make sure that the value of the expression depends only upon |
11109 | memory contents, and values computed from them within GDB. If we | |
11110 | find any register references or function calls, we can't use a | |
11111 | hardware watchpoint. | |
11112 | ||
11113 | The idea here is that evaluating an expression generates a series | |
11114 | of values, one holding the value of every subexpression. (The | |
11115 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
11116 | a*b+c.) GDB's values hold almost enough information to establish | |
11117 | the criteria given above --- they identify memory lvalues, | |
11118 | register lvalues, computed values, etcetera. So we can evaluate | |
11119 | the expression, and then scan the chain of values that leaves | |
11120 | behind to decide whether we can detect any possible change to the | |
11121 | expression's final value using only hardware watchpoints. | |
11122 | ||
11123 | However, I don't think that the values returned by inferior | |
11124 | function calls are special in any way. So this function may not | |
11125 | notice that an expression involving an inferior function call | |
11126 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 11127 | for (; v; v = value_next (v)) |
c906108c | 11128 | { |
5c44784c | 11129 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 11130 | { |
8464be76 DJ |
11131 | if (v != head && value_lazy (v)) |
11132 | /* A lazy memory lvalue in the chain is one that GDB never | |
11133 | needed to fetch; we either just used its address (e.g., | |
11134 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
11135 | in `a,b'). This doesn't apply to HEAD; if that is | |
11136 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 11137 | ; |
53a5351d | 11138 | else |
5c44784c JM |
11139 | { |
11140 | /* Ahh, memory we actually used! Check if we can cover | |
11141 | it with hardware watchpoints. */ | |
df407dfe | 11142 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
11143 | |
11144 | /* We only watch structs and arrays if user asked for it | |
11145 | explicitly, never if they just happen to appear in a | |
11146 | middle of some value chain. */ | |
11147 | if (v == head | |
11148 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
11149 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
11150 | { | |
42ae5230 | 11151 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
11152 | int len; |
11153 | int num_regs; | |
11154 | ||
a9634178 | 11155 | len = (target_exact_watchpoints |
e09342b5 TJB |
11156 | && is_scalar_type_recursive (vtype))? |
11157 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 11158 | |
e09342b5 TJB |
11159 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
11160 | if (!num_regs) | |
2e70b7b9 MS |
11161 | return 0; |
11162 | else | |
e09342b5 | 11163 | found_memory_cnt += num_regs; |
2e70b7b9 | 11164 | } |
5c44784c | 11165 | } |
c5aa993b | 11166 | } |
5086187c AC |
11167 | else if (VALUE_LVAL (v) != not_lval |
11168 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 11169 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 11170 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 11171 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
11172 | } |
11173 | ||
11174 | /* The expression itself looks suitable for using a hardware | |
11175 | watchpoint, but give the target machine a chance to reject it. */ | |
11176 | return found_memory_cnt; | |
11177 | } | |
11178 | ||
8b93c638 | 11179 | void |
84f4c1fe | 11180 | watch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11181 | { |
84f4c1fe | 11182 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
11183 | } |
11184 | ||
06a64a0b TT |
11185 | /* A helper function that looks for the "-location" argument and then |
11186 | calls watch_command_1. */ | |
11187 | ||
11188 | static void | |
11189 | watch_maybe_just_location (char *arg, int accessflag, int from_tty) | |
11190 | { | |
11191 | int just_location = 0; | |
11192 | ||
11193 | if (arg | |
11194 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
11195 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
11196 | { | |
e9cafbcc | 11197 | arg = skip_spaces (arg); |
06a64a0b TT |
11198 | just_location = 1; |
11199 | } | |
11200 | ||
84f4c1fe | 11201 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 11202 | } |
8926118c | 11203 | |
c5aa993b | 11204 | static void |
fba45db2 | 11205 | watch_command (char *arg, int from_tty) |
c906108c | 11206 | { |
06a64a0b | 11207 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
11208 | } |
11209 | ||
8b93c638 | 11210 | void |
84f4c1fe | 11211 | rwatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11212 | { |
84f4c1fe | 11213 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 11214 | } |
8926118c | 11215 | |
c5aa993b | 11216 | static void |
fba45db2 | 11217 | rwatch_command (char *arg, int from_tty) |
c906108c | 11218 | { |
06a64a0b | 11219 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
11220 | } |
11221 | ||
8b93c638 | 11222 | void |
84f4c1fe | 11223 | awatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11224 | { |
84f4c1fe | 11225 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 11226 | } |
8926118c | 11227 | |
c5aa993b | 11228 | static void |
fba45db2 | 11229 | awatch_command (char *arg, int from_tty) |
c906108c | 11230 | { |
06a64a0b | 11231 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 11232 | } |
c906108c | 11233 | \f |
c5aa993b | 11234 | |
43ff13b4 | 11235 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
11236 | because it uses the mechanisms of breakpoints. */ |
11237 | ||
bfec99b2 PA |
11238 | struct until_break_command_continuation_args |
11239 | { | |
11240 | struct breakpoint *breakpoint; | |
11241 | struct breakpoint *breakpoint2; | |
186c406b | 11242 | int thread_num; |
bfec99b2 PA |
11243 | }; |
11244 | ||
43ff13b4 | 11245 | /* This function is called by fetch_inferior_event via the |
4a64f543 | 11246 | cmd_continuation pointer, to complete the until command. It takes |
43ff13b4 | 11247 | care of cleaning up the temporary breakpoints set up by the until |
4a64f543 | 11248 | command. */ |
c2c6d25f | 11249 | static void |
fa4cd53f | 11250 | until_break_command_continuation (void *arg, int err) |
43ff13b4 | 11251 | { |
bfec99b2 PA |
11252 | struct until_break_command_continuation_args *a = arg; |
11253 | ||
11254 | delete_breakpoint (a->breakpoint); | |
11255 | if (a->breakpoint2) | |
11256 | delete_breakpoint (a->breakpoint2); | |
186c406b | 11257 | delete_longjmp_breakpoint (a->thread_num); |
43ff13b4 JM |
11258 | } |
11259 | ||
c906108c | 11260 | void |
ae66c1fc | 11261 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
11262 | { |
11263 | struct symtabs_and_lines sals; | |
11264 | struct symtab_and_line sal; | |
8556afb4 PA |
11265 | struct frame_info *frame; |
11266 | struct gdbarch *frame_gdbarch; | |
11267 | struct frame_id stack_frame_id; | |
11268 | struct frame_id caller_frame_id; | |
c906108c | 11269 | struct breakpoint *breakpoint; |
f107f563 | 11270 | struct breakpoint *breakpoint2 = NULL; |
c906108c | 11271 | struct cleanup *old_chain; |
186c406b TT |
11272 | int thread; |
11273 | struct thread_info *tp; | |
c906108c SS |
11274 | |
11275 | clear_proceed_status (); | |
11276 | ||
11277 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11278 | this function. */ |
c5aa993b | 11279 | |
1bfeeb0f | 11280 | if (last_displayed_sal_is_valid ()) |
f8eba3c6 | 11281 | sals = decode_line_1 (&arg, DECODE_LINE_FUNFIRSTLINE, |
1bfeeb0f | 11282 | get_last_displayed_symtab (), |
f8eba3c6 | 11283 | get_last_displayed_line ()); |
c906108c | 11284 | else |
f8eba3c6 TT |
11285 | sals = decode_line_1 (&arg, DECODE_LINE_FUNFIRSTLINE, |
11286 | (struct symtab *) NULL, 0); | |
c5aa993b | 11287 | |
c906108c | 11288 | if (sals.nelts != 1) |
8a3fe4f8 | 11289 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11290 | |
c906108c | 11291 | sal = sals.sals[0]; |
4a64f543 | 11292 | xfree (sals.sals); /* malloc'd, so freed. */ |
c5aa993b | 11293 | |
c906108c | 11294 | if (*arg) |
8a3fe4f8 | 11295 | error (_("Junk at end of arguments.")); |
c5aa993b | 11296 | |
c906108c | 11297 | resolve_sal_pc (&sal); |
c5aa993b | 11298 | |
186c406b TT |
11299 | tp = inferior_thread (); |
11300 | thread = tp->num; | |
11301 | ||
883bc8d1 PA |
11302 | old_chain = make_cleanup (null_cleanup, NULL); |
11303 | ||
8556afb4 PA |
11304 | /* Note linespec handling above invalidates the frame chain. |
11305 | Installing a breakpoint also invalidates the frame chain (as it | |
11306 | may need to switch threads), so do any frame handling before | |
11307 | that. */ | |
11308 | ||
11309 | frame = get_selected_frame (NULL); | |
11310 | frame_gdbarch = get_frame_arch (frame); | |
11311 | stack_frame_id = get_stack_frame_id (frame); | |
11312 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11313 | |
ae66c1fc EZ |
11314 | /* Keep within the current frame, or in frames called by the current |
11315 | one. */ | |
edb3359d | 11316 | |
883bc8d1 | 11317 | if (frame_id_p (caller_frame_id)) |
c906108c | 11318 | { |
883bc8d1 PA |
11319 | struct symtab_and_line sal2; |
11320 | ||
11321 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11322 | sal2.pc = frame_unwind_caller_pc (frame); | |
a6d9a66e | 11323 | breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame), |
883bc8d1 PA |
11324 | sal2, |
11325 | caller_frame_id, | |
f107f563 VP |
11326 | bp_until); |
11327 | make_cleanup_delete_breakpoint (breakpoint2); | |
186c406b | 11328 | |
883bc8d1 | 11329 | set_longjmp_breakpoint (tp, caller_frame_id); |
186c406b | 11330 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); |
c906108c | 11331 | } |
c5aa993b | 11332 | |
c70a6932 JK |
11333 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11334 | frame = NULL; | |
11335 | ||
883bc8d1 PA |
11336 | if (anywhere) |
11337 | /* If the user told us to continue until a specified location, | |
11338 | we don't specify a frame at which we need to stop. */ | |
11339 | breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, | |
11340 | null_frame_id, bp_until); | |
11341 | else | |
11342 | /* Otherwise, specify the selected frame, because we want to stop | |
11343 | only at the very same frame. */ | |
11344 | breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, | |
11345 | stack_frame_id, bp_until); | |
11346 | make_cleanup_delete_breakpoint (breakpoint); | |
11347 | ||
a493e3e2 | 11348 | proceed (-1, GDB_SIGNAL_DEFAULT, 0); |
f107f563 | 11349 | |
4a64f543 MS |
11350 | /* If we are running asynchronously, and proceed call above has |
11351 | actually managed to start the target, arrange for breakpoints to | |
11352 | be deleted when the target stops. Otherwise, we're already | |
11353 | stopped and delete breakpoints via cleanup chain. */ | |
f107f563 | 11354 | |
8ea051c5 | 11355 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 11356 | { |
bfec99b2 PA |
11357 | struct until_break_command_continuation_args *args; |
11358 | args = xmalloc (sizeof (*args)); | |
f107f563 | 11359 | |
bfec99b2 PA |
11360 | args->breakpoint = breakpoint; |
11361 | args->breakpoint2 = breakpoint2; | |
186c406b | 11362 | args->thread_num = thread; |
f107f563 VP |
11363 | |
11364 | discard_cleanups (old_chain); | |
95e54da7 PA |
11365 | add_continuation (inferior_thread (), |
11366 | until_break_command_continuation, args, | |
604ead4a | 11367 | xfree); |
f107f563 VP |
11368 | } |
11369 | else | |
c5aa993b | 11370 | do_cleanups (old_chain); |
c906108c | 11371 | } |
ae66c1fc | 11372 | |
c906108c SS |
11373 | /* This function attempts to parse an optional "if <cond>" clause |
11374 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11375 | |
c906108c SS |
11376 | Else, it returns a pointer to the condition string. (It does not |
11377 | attempt to evaluate the string against a particular block.) And, | |
11378 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11379 | if clause in the arg string. */ |
53a5351d | 11380 | |
c906108c | 11381 | static char * |
fba45db2 | 11382 | ep_parse_optional_if_clause (char **arg) |
c906108c | 11383 | { |
c5aa993b JM |
11384 | char *cond_string; |
11385 | ||
11386 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11387 | return NULL; |
c5aa993b | 11388 | |
4a64f543 | 11389 | /* Skip the "if" keyword. */ |
c906108c | 11390 | (*arg) += 2; |
c5aa993b | 11391 | |
c906108c | 11392 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11393 | condition string. */ |
e9cafbcc | 11394 | *arg = skip_spaces (*arg); |
c906108c | 11395 | cond_string = *arg; |
c5aa993b | 11396 | |
4a64f543 MS |
11397 | /* Assume that the condition occupies the remainder of the arg |
11398 | string. */ | |
c906108c | 11399 | (*arg) += strlen (cond_string); |
c5aa993b | 11400 | |
c906108c SS |
11401 | return cond_string; |
11402 | } | |
c5aa993b | 11403 | |
c906108c SS |
11404 | /* Commands to deal with catching events, such as signals, exceptions, |
11405 | process start/exit, etc. */ | |
c5aa993b JM |
11406 | |
11407 | typedef enum | |
11408 | { | |
44feb3ce TT |
11409 | catch_fork_temporary, catch_vfork_temporary, |
11410 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11411 | } |
11412 | catch_fork_kind; | |
11413 | ||
c906108c | 11414 | static void |
cc59ec59 MS |
11415 | catch_fork_command_1 (char *arg, int from_tty, |
11416 | struct cmd_list_element *command) | |
c906108c | 11417 | { |
a6d9a66e | 11418 | struct gdbarch *gdbarch = get_current_arch (); |
c5aa993b | 11419 | char *cond_string = NULL; |
44feb3ce TT |
11420 | catch_fork_kind fork_kind; |
11421 | int tempflag; | |
11422 | ||
11423 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
11424 | tempflag = (fork_kind == catch_fork_temporary | |
11425 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11426 | |
44feb3ce TT |
11427 | if (!arg) |
11428 | arg = ""; | |
e9cafbcc | 11429 | arg = skip_spaces (arg); |
c5aa993b | 11430 | |
c906108c | 11431 | /* The allowed syntax is: |
c5aa993b JM |
11432 | catch [v]fork |
11433 | catch [v]fork if <cond> | |
11434 | ||
4a64f543 | 11435 | First, check if there's an if clause. */ |
c906108c | 11436 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11437 | |
c906108c | 11438 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11439 | error (_("Junk at end of arguments.")); |
c5aa993b | 11440 | |
c906108c | 11441 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11442 | and enable reporting of such events. */ |
c5aa993b JM |
11443 | switch (fork_kind) |
11444 | { | |
44feb3ce TT |
11445 | case catch_fork_temporary: |
11446 | case catch_fork_permanent: | |
a6d9a66e | 11447 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11448 | &catch_fork_breakpoint_ops); |
c906108c | 11449 | break; |
44feb3ce TT |
11450 | case catch_vfork_temporary: |
11451 | case catch_vfork_permanent: | |
a6d9a66e | 11452 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11453 | &catch_vfork_breakpoint_ops); |
c906108c | 11454 | break; |
c5aa993b | 11455 | default: |
8a3fe4f8 | 11456 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11457 | break; |
c5aa993b | 11458 | } |
c906108c SS |
11459 | } |
11460 | ||
11461 | static void | |
cc59ec59 MS |
11462 | catch_exec_command_1 (char *arg, int from_tty, |
11463 | struct cmd_list_element *command) | |
c906108c | 11464 | { |
b4d90040 | 11465 | struct exec_catchpoint *c; |
a6d9a66e | 11466 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 11467 | int tempflag; |
c5aa993b | 11468 | char *cond_string = NULL; |
c906108c | 11469 | |
44feb3ce TT |
11470 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
11471 | ||
11472 | if (!arg) | |
11473 | arg = ""; | |
e9cafbcc | 11474 | arg = skip_spaces (arg); |
c906108c SS |
11475 | |
11476 | /* The allowed syntax is: | |
c5aa993b JM |
11477 | catch exec |
11478 | catch exec if <cond> | |
c906108c | 11479 | |
4a64f543 | 11480 | First, check if there's an if clause. */ |
c906108c SS |
11481 | cond_string = ep_parse_optional_if_clause (&arg); |
11482 | ||
11483 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11484 | error (_("Junk at end of arguments.")); |
c906108c | 11485 | |
b4d90040 PA |
11486 | c = XNEW (struct exec_catchpoint); |
11487 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, | |
11488 | &catch_exec_breakpoint_ops); | |
11489 | c->exec_pathname = NULL; | |
11490 | ||
3ea46bff | 11491 | install_breakpoint (0, &c->base, 1); |
c906108c | 11492 | } |
c5aa993b | 11493 | |
3086aeae | 11494 | static enum print_stop_action |
348d480f | 11495 | print_it_exception_catchpoint (bpstat bs) |
3086aeae | 11496 | { |
79a45e25 | 11497 | struct ui_out *uiout = current_uiout; |
348d480f | 11498 | struct breakpoint *b = bs->breakpoint_at; |
ade92717 | 11499 | int bp_temp, bp_throw; |
3086aeae | 11500 | |
ade92717 | 11501 | annotate_catchpoint (b->number); |
3086aeae | 11502 | |
ade92717 AR |
11503 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
11504 | if (b->loc->address != b->loc->requested_address) | |
11505 | breakpoint_adjustment_warning (b->loc->requested_address, | |
11506 | b->loc->address, | |
11507 | b->number, 1); | |
df2b6d2d | 11508 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
11509 | ui_out_text (uiout, |
11510 | bp_temp ? "Temporary catchpoint " | |
11511 | : "Catchpoint "); | |
11512 | if (!ui_out_is_mi_like_p (uiout)) | |
11513 | ui_out_field_int (uiout, "bkptno", b->number); | |
11514 | ui_out_text (uiout, | |
c0b37c48 AR |
11515 | bp_throw ? " (exception thrown), " |
11516 | : " (exception caught), "); | |
ade92717 AR |
11517 | if (ui_out_is_mi_like_p (uiout)) |
11518 | { | |
11519 | ui_out_field_string (uiout, "reason", | |
11520 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
11521 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
11522 | ui_out_field_int (uiout, "bkptno", b->number); | |
11523 | } | |
3086aeae DJ |
11524 | return PRINT_SRC_AND_LOC; |
11525 | } | |
11526 | ||
11527 | static void | |
cc59ec59 MS |
11528 | print_one_exception_catchpoint (struct breakpoint *b, |
11529 | struct bp_location **last_loc) | |
3086aeae | 11530 | { |
79a45b7d | 11531 | struct value_print_options opts; |
79a45e25 | 11532 | struct ui_out *uiout = current_uiout; |
cc59ec59 | 11533 | |
79a45b7d TT |
11534 | get_user_print_options (&opts); |
11535 | if (opts.addressprint) | |
3086aeae DJ |
11536 | { |
11537 | annotate_field (4); | |
604133b5 AR |
11538 | if (b->loc == NULL || b->loc->shlib_disabled) |
11539 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
11540 | else | |
5af949e3 UW |
11541 | ui_out_field_core_addr (uiout, "addr", |
11542 | b->loc->gdbarch, b->loc->address); | |
3086aeae DJ |
11543 | } |
11544 | annotate_field (5); | |
604133b5 | 11545 | if (b->loc) |
a6d9a66e | 11546 | *last_loc = b->loc; |
3086aeae DJ |
11547 | if (strstr (b->addr_string, "throw") != NULL) |
11548 | ui_out_field_string (uiout, "what", "exception throw"); | |
11549 | else | |
11550 | ui_out_field_string (uiout, "what", "exception catch"); | |
11551 | } | |
11552 | ||
11553 | static void | |
11554 | print_mention_exception_catchpoint (struct breakpoint *b) | |
11555 | { | |
79a45e25 | 11556 | struct ui_out *uiout = current_uiout; |
ade92717 AR |
11557 | int bp_temp; |
11558 | int bp_throw; | |
11559 | ||
df2b6d2d | 11560 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
11561 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
11562 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
11563 | : _("Catchpoint ")); | |
11564 | ui_out_field_int (uiout, "bkptno", b->number); | |
11565 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
11566 | : _(" (catch)")); | |
3086aeae DJ |
11567 | } |
11568 | ||
6149aea9 PA |
11569 | /* Implement the "print_recreate" breakpoint_ops method for throw and |
11570 | catch catchpoints. */ | |
11571 | ||
11572 | static void | |
4a64f543 MS |
11573 | print_recreate_exception_catchpoint (struct breakpoint *b, |
11574 | struct ui_file *fp) | |
6149aea9 PA |
11575 | { |
11576 | int bp_temp; | |
11577 | int bp_throw; | |
11578 | ||
11579 | bp_temp = b->disposition == disp_del; | |
11580 | bp_throw = strstr (b->addr_string, "throw") != NULL; | |
11581 | fprintf_unfiltered (fp, bp_temp ? "tcatch " : "catch "); | |
11582 | fprintf_unfiltered (fp, bp_throw ? "throw" : "catch"); | |
d9b3f62e | 11583 | print_recreate_thread (b, fp); |
6149aea9 PA |
11584 | } |
11585 | ||
2060206e | 11586 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops; |
3086aeae DJ |
11587 | |
11588 | static int | |
11589 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
11590 | enum exception_event_kind ex_event, int from_tty) | |
11591 | { | |
604133b5 AR |
11592 | char *trigger_func_name; |
11593 | ||
3086aeae | 11594 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 11595 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 11596 | else |
604133b5 | 11597 | trigger_func_name = "__cxa_throw"; |
3086aeae | 11598 | |
8cdf0e15 | 11599 | create_breakpoint (get_current_arch (), |
e7e0cddf | 11600 | trigger_func_name, cond_string, -1, NULL, |
8cdf0e15 | 11601 | 0 /* condition and thread are valid. */, |
0fb4aa4b | 11602 | tempflag, bp_breakpoint, |
8cdf0e15 VP |
11603 | 0, |
11604 | AUTO_BOOLEAN_TRUE /* pending */, | |
11605 | &gnu_v3_exception_catchpoint_ops, from_tty, | |
84f4c1fe | 11606 | 1 /* enabled */, |
44f238bb PA |
11607 | 0 /* internal */, |
11608 | 0); | |
3086aeae | 11609 | |
3086aeae DJ |
11610 | return 1; |
11611 | } | |
11612 | ||
4a64f543 | 11613 | /* Deal with "catch catch" and "catch throw" commands. */ |
c906108c SS |
11614 | |
11615 | static void | |
fba45db2 KB |
11616 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
11617 | int tempflag, int from_tty) | |
c906108c | 11618 | { |
c5aa993b | 11619 | char *cond_string = NULL; |
c5aa993b | 11620 | |
44feb3ce TT |
11621 | if (!arg) |
11622 | arg = ""; | |
e9cafbcc | 11623 | arg = skip_spaces (arg); |
c5aa993b | 11624 | |
c906108c SS |
11625 | cond_string = ep_parse_optional_if_clause (&arg); |
11626 | ||
11627 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11628 | error (_("Junk at end of arguments.")); |
c906108c | 11629 | |
059fb39f PM |
11630 | if (ex_event != EX_EVENT_THROW |
11631 | && ex_event != EX_EVENT_CATCH) | |
8a3fe4f8 | 11632 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 11633 | |
3086aeae DJ |
11634 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
11635 | return; | |
11636 | ||
8a3fe4f8 | 11637 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
11638 | } |
11639 | ||
44feb3ce TT |
11640 | /* Implementation of "catch catch" command. */ |
11641 | ||
11642 | static void | |
11643 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
11644 | { | |
11645 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 11646 | |
44feb3ce TT |
11647 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); |
11648 | } | |
11649 | ||
11650 | /* Implementation of "catch throw" command. */ | |
11651 | ||
11652 | static void | |
11653 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
11654 | { | |
11655 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 11656 | |
44feb3ce TT |
11657 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); |
11658 | } | |
11659 | ||
9ac4176b | 11660 | void |
28010a5d PA |
11661 | init_ada_exception_breakpoint (struct breakpoint *b, |
11662 | struct gdbarch *gdbarch, | |
11663 | struct symtab_and_line sal, | |
11664 | char *addr_string, | |
c0a91b2b | 11665 | const struct breakpoint_ops *ops, |
28010a5d PA |
11666 | int tempflag, |
11667 | int from_tty) | |
f7f9143b | 11668 | { |
f7f9143b JB |
11669 | if (from_tty) |
11670 | { | |
5af949e3 UW |
11671 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11672 | if (!loc_gdbarch) | |
11673 | loc_gdbarch = gdbarch; | |
11674 | ||
6c95b8df PA |
11675 | describe_other_breakpoints (loc_gdbarch, |
11676 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
11677 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
11678 | version for exception catchpoints, because two catchpoints | |
11679 | used for different exception names will use the same address. | |
11680 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 11681 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 11682 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
11683 | the user what type of catchpoint it is. The above is good |
11684 | enough for now, though. */ | |
11685 | } | |
11686 | ||
28010a5d | 11687 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b JB |
11688 | |
11689 | b->enable_state = bp_enabled; | |
11690 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
f7f9143b JB |
11691 | b->addr_string = addr_string; |
11692 | b->language = language_ada; | |
f7f9143b JB |
11693 | } |
11694 | ||
a96d9b2e SDJ |
11695 | /* Splits the argument using space as delimiter. Returns an xmalloc'd |
11696 | filter list, or NULL if no filtering is required. */ | |
11697 | static VEC(int) * | |
11698 | catch_syscall_split_args (char *arg) | |
11699 | { | |
11700 | VEC(int) *result = NULL; | |
29d0bb3d | 11701 | struct cleanup *cleanup = make_cleanup (VEC_cleanup (int), &result); |
a96d9b2e SDJ |
11702 | |
11703 | while (*arg != '\0') | |
11704 | { | |
11705 | int i, syscall_number; | |
11706 | char *endptr; | |
11707 | char cur_name[128]; | |
11708 | struct syscall s; | |
11709 | ||
11710 | /* Skip whitespace. */ | |
11711 | while (isspace (*arg)) | |
11712 | arg++; | |
11713 | ||
11714 | for (i = 0; i < 127 && arg[i] && !isspace (arg[i]); ++i) | |
11715 | cur_name[i] = arg[i]; | |
11716 | cur_name[i] = '\0'; | |
11717 | arg += i; | |
11718 | ||
11719 | /* Check if the user provided a syscall name or a number. */ | |
11720 | syscall_number = (int) strtol (cur_name, &endptr, 0); | |
11721 | if (*endptr == '\0') | |
bccd0dd2 | 11722 | get_syscall_by_number (syscall_number, &s); |
a96d9b2e SDJ |
11723 | else |
11724 | { | |
11725 | /* We have a name. Let's check if it's valid and convert it | |
11726 | to a number. */ | |
11727 | get_syscall_by_name (cur_name, &s); | |
11728 | ||
11729 | if (s.number == UNKNOWN_SYSCALL) | |
4a64f543 MS |
11730 | /* Here we have to issue an error instead of a warning, |
11731 | because GDB cannot do anything useful if there's no | |
11732 | syscall number to be caught. */ | |
a96d9b2e SDJ |
11733 | error (_("Unknown syscall name '%s'."), cur_name); |
11734 | } | |
11735 | ||
11736 | /* Ok, it's valid. */ | |
11737 | VEC_safe_push (int, result, s.number); | |
11738 | } | |
11739 | ||
11740 | discard_cleanups (cleanup); | |
11741 | return result; | |
11742 | } | |
11743 | ||
11744 | /* Implement the "catch syscall" command. */ | |
11745 | ||
11746 | static void | |
cc59ec59 MS |
11747 | catch_syscall_command_1 (char *arg, int from_tty, |
11748 | struct cmd_list_element *command) | |
a96d9b2e SDJ |
11749 | { |
11750 | int tempflag; | |
11751 | VEC(int) *filter; | |
11752 | struct syscall s; | |
11753 | struct gdbarch *gdbarch = get_current_arch (); | |
11754 | ||
11755 | /* Checking if the feature if supported. */ | |
11756 | if (gdbarch_get_syscall_number_p (gdbarch) == 0) | |
11757 | error (_("The feature 'catch syscall' is not supported on \ | |
ea666128 | 11758 | this architecture yet.")); |
a96d9b2e SDJ |
11759 | |
11760 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
11761 | ||
e9cafbcc | 11762 | arg = skip_spaces (arg); |
a96d9b2e SDJ |
11763 | |
11764 | /* We need to do this first "dummy" translation in order | |
11765 | to get the syscall XML file loaded or, most important, | |
11766 | to display a warning to the user if there's no XML file | |
11767 | for his/her architecture. */ | |
11768 | get_syscall_by_number (0, &s); | |
11769 | ||
11770 | /* The allowed syntax is: | |
11771 | catch syscall | |
11772 | catch syscall <name | number> [<name | number> ... <name | number>] | |
11773 | ||
11774 | Let's check if there's a syscall name. */ | |
11775 | ||
11776 | if (arg != NULL) | |
11777 | filter = catch_syscall_split_args (arg); | |
11778 | else | |
11779 | filter = NULL; | |
11780 | ||
11781 | create_syscall_event_catchpoint (tempflag, filter, | |
11782 | &catch_syscall_breakpoint_ops); | |
11783 | } | |
11784 | ||
c906108c | 11785 | static void |
fba45db2 | 11786 | catch_command (char *arg, int from_tty) |
c906108c | 11787 | { |
44feb3ce | 11788 | error (_("Catch requires an event name.")); |
c906108c SS |
11789 | } |
11790 | \f | |
11791 | ||
11792 | static void | |
fba45db2 | 11793 | tcatch_command (char *arg, int from_tty) |
c906108c | 11794 | { |
44feb3ce | 11795 | error (_("Catch requires an event name.")); |
c906108c SS |
11796 | } |
11797 | ||
8a2c437b TT |
11798 | /* A qsort comparison function that sorts breakpoints in order. */ |
11799 | ||
11800 | static int | |
11801 | compare_breakpoints (const void *a, const void *b) | |
11802 | { | |
11803 | const breakpoint_p *ba = a; | |
11804 | uintptr_t ua = (uintptr_t) *ba; | |
11805 | const breakpoint_p *bb = b; | |
11806 | uintptr_t ub = (uintptr_t) *bb; | |
11807 | ||
11808 | if ((*ba)->number < (*bb)->number) | |
11809 | return -1; | |
11810 | else if ((*ba)->number > (*bb)->number) | |
11811 | return 1; | |
11812 | ||
11813 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11814 | the number 0. */ | |
11815 | if (ua < ub) | |
11816 | return -1; | |
94b0e70d | 11817 | return ua > ub ? 1 : 0; |
8a2c437b TT |
11818 | } |
11819 | ||
80f8a6eb | 11820 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11821 | |
11822 | static void | |
fba45db2 | 11823 | clear_command (char *arg, int from_tty) |
c906108c | 11824 | { |
8a2c437b | 11825 | struct breakpoint *b, *prev; |
d6e956e5 VP |
11826 | VEC(breakpoint_p) *found = 0; |
11827 | int ix; | |
c906108c SS |
11828 | int default_match; |
11829 | struct symtabs_and_lines sals; | |
11830 | struct symtab_and_line sal; | |
c906108c | 11831 | int i; |
8a2c437b | 11832 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); |
c906108c SS |
11833 | |
11834 | if (arg) | |
11835 | { | |
39cf75f7 DE |
11836 | sals = decode_line_with_current_source (arg, |
11837 | (DECODE_LINE_FUNFIRSTLINE | |
11838 | | DECODE_LINE_LIST_MODE)); | |
cf4ded82 | 11839 | make_cleanup (xfree, sals.sals); |
c906108c SS |
11840 | default_match = 0; |
11841 | } | |
11842 | else | |
11843 | { | |
c5aa993b | 11844 | sals.sals = (struct symtab_and_line *) |
c906108c | 11845 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 11846 | make_cleanup (xfree, sals.sals); |
4a64f543 | 11847 | init_sal (&sal); /* Initialize to zeroes. */ |
1bfeeb0f JL |
11848 | |
11849 | /* Set sal's line, symtab, pc, and pspace to the values | |
11850 | corresponding to the last call to print_frame_info. If the | |
11851 | codepoint is not valid, this will set all the fields to 0. */ | |
11852 | get_last_displayed_sal (&sal); | |
c906108c | 11853 | if (sal.symtab == 0) |
8a3fe4f8 | 11854 | error (_("No source file specified.")); |
c906108c SS |
11855 | |
11856 | sals.sals[0] = sal; | |
11857 | sals.nelts = 1; | |
11858 | ||
11859 | default_match = 1; | |
11860 | } | |
11861 | ||
4a64f543 MS |
11862 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11863 | seems, because all existing breakpoints typically have both | |
11864 | file/line and pc set. So, if clear is given file/line, we can | |
11865 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11866 | |
11867 | We only support clearing given the address explicitly | |
11868 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11869 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11870 | due to optimization, all in one block. |
4a64f543 MS |
11871 | |
11872 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11873 | PC corresponding to the same file:line, the breakpoint won't |
11874 | be cleared. We probably can still clear the breakpoint, but | |
11875 | since the other PC value is never presented to user, user | |
11876 | can only find it by guessing, and it does not seem important | |
11877 | to support that. */ | |
11878 | ||
4a64f543 MS |
11879 | /* For each line spec given, delete bps which correspond to it. Do |
11880 | it in two passes, solely to preserve the current behavior that | |
11881 | from_tty is forced true if we delete more than one | |
11882 | breakpoint. */ | |
c906108c | 11883 | |
80f8a6eb | 11884 | found = NULL; |
8a2c437b | 11885 | make_cleanup (VEC_cleanup (breakpoint_p), &found); |
c906108c SS |
11886 | for (i = 0; i < sals.nelts; i++) |
11887 | { | |
b57a636e | 11888 | int is_abs; |
4aac40c8 | 11889 | |
c906108c | 11890 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
11891 | If line given (pc == 0), clear all bpts on specified line. |
11892 | If defaulting, clear all bpts on default line | |
c906108c | 11893 | or at default pc. |
c5aa993b JM |
11894 | |
11895 | defaulting sal.pc != 0 tests to do | |
11896 | ||
11897 | 0 1 pc | |
11898 | 1 1 pc _and_ line | |
11899 | 0 0 line | |
11900 | 1 0 <can't happen> */ | |
c906108c SS |
11901 | |
11902 | sal = sals.sals[i]; | |
4aac40c8 | 11903 | is_abs = sal.symtab == NULL ? 1 : IS_ABSOLUTE_PATH (sal.symtab->filename); |
c906108c | 11904 | |
4a64f543 | 11905 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 11906 | ALL_BREAKPOINTS (b) |
c5aa993b | 11907 | { |
0d381245 | 11908 | int match = 0; |
4a64f543 | 11909 | /* Are we going to delete b? */ |
cc60f2e3 | 11910 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
11911 | { |
11912 | struct bp_location *loc = b->loc; | |
11913 | for (; loc; loc = loc->next) | |
11914 | { | |
f8eba3c6 TT |
11915 | /* If the user specified file:line, don't allow a PC |
11916 | match. This matches historical gdb behavior. */ | |
11917 | int pc_match = (!sal.explicit_line | |
11918 | && sal.pc | |
11919 | && (loc->pspace == sal.pspace) | |
11920 | && (loc->address == sal.pc) | |
11921 | && (!section_is_overlay (loc->section) | |
11922 | || loc->section == sal.section)); | |
4aac40c8 TT |
11923 | int line_match = 0; |
11924 | ||
11925 | if ((default_match || sal.explicit_line) | |
11926 | && loc->source_file != NULL | |
11927 | && sal.symtab != NULL | |
11928 | && sal.pspace == loc->pspace | |
11929 | && loc->line_number == sal.line) | |
11930 | { | |
11931 | if (filename_cmp (loc->source_file, | |
11932 | sal.symtab->filename) == 0) | |
11933 | line_match = 1; | |
11934 | else if (!IS_ABSOLUTE_PATH (sal.symtab->filename) | |
11935 | && compare_filenames_for_search (loc->source_file, | |
b57a636e | 11936 | sal.symtab->filename)) |
4aac40c8 TT |
11937 | line_match = 1; |
11938 | } | |
11939 | ||
0d381245 VP |
11940 | if (pc_match || line_match) |
11941 | { | |
11942 | match = 1; | |
11943 | break; | |
11944 | } | |
11945 | } | |
11946 | } | |
11947 | ||
11948 | if (match) | |
d6e956e5 | 11949 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 11950 | } |
80f8a6eb | 11951 | } |
8a2c437b | 11952 | |
80f8a6eb | 11953 | /* Now go thru the 'found' chain and delete them. */ |
d6e956e5 | 11954 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
11955 | { |
11956 | if (arg) | |
8a3fe4f8 | 11957 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11958 | else |
8a3fe4f8 | 11959 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11960 | } |
c906108c | 11961 | |
8a2c437b TT |
11962 | /* Remove duplicates from the vec. */ |
11963 | qsort (VEC_address (breakpoint_p, found), | |
11964 | VEC_length (breakpoint_p, found), | |
11965 | sizeof (breakpoint_p), | |
11966 | compare_breakpoints); | |
11967 | prev = VEC_index (breakpoint_p, found, 0); | |
11968 | for (ix = 1; VEC_iterate (breakpoint_p, found, ix, b); ++ix) | |
11969 | { | |
11970 | if (b == prev) | |
11971 | { | |
11972 | VEC_ordered_remove (breakpoint_p, found, ix); | |
11973 | --ix; | |
11974 | } | |
11975 | } | |
11976 | ||
d6e956e5 | 11977 | if (VEC_length(breakpoint_p, found) > 1) |
4a64f543 | 11978 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11979 | if (from_tty) |
a3f17187 | 11980 | { |
d6e956e5 | 11981 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
11982 | printf_unfiltered (_("Deleted breakpoint ")); |
11983 | else | |
11984 | printf_unfiltered (_("Deleted breakpoints ")); | |
11985 | } | |
ef37bb07 | 11986 | annotate_breakpoints_changed (); |
d6e956e5 VP |
11987 | |
11988 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 11989 | { |
c5aa993b | 11990 | if (from_tty) |
d6e956e5 VP |
11991 | printf_unfiltered ("%d ", b->number); |
11992 | delete_breakpoint (b); | |
c906108c | 11993 | } |
80f8a6eb MS |
11994 | if (from_tty) |
11995 | putchar_unfiltered ('\n'); | |
8a2c437b TT |
11996 | |
11997 | do_cleanups (cleanups); | |
c906108c SS |
11998 | } |
11999 | \f | |
12000 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
12001 | all breakpoints that are marked for deletion, whether hit or not. | |
12002 | This is called after any breakpoint is hit, or after errors. */ | |
12003 | ||
12004 | void | |
fba45db2 | 12005 | breakpoint_auto_delete (bpstat bs) |
c906108c | 12006 | { |
35df4500 | 12007 | struct breakpoint *b, *b_tmp; |
c906108c SS |
12008 | |
12009 | for (; bs; bs = bs->next) | |
f431efe5 PA |
12010 | if (bs->breakpoint_at |
12011 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 12012 | && bs->stop) |
f431efe5 | 12013 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 12014 | |
35df4500 | 12015 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 12016 | { |
b5de0fa7 | 12017 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
12018 | delete_breakpoint (b); |
12019 | } | |
c906108c SS |
12020 | } |
12021 | ||
4a64f543 MS |
12022 | /* A comparison function for bp_location AP and BP being interfaced to |
12023 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
12024 | does breakpoint_address_is_meaningful say for its OWNER), | |
12025 | secondarily by ordering first bp_permanent OWNERed elements and | |
12026 | terciarily just ensuring the array is sorted stable way despite | |
e5dd4106 | 12027 | qsort being an unstable algorithm. */ |
876fa593 JK |
12028 | |
12029 | static int | |
494cfb0f | 12030 | bp_location_compare (const void *ap, const void *bp) |
876fa593 | 12031 | { |
494cfb0f JK |
12032 | struct bp_location *a = *(void **) ap; |
12033 | struct bp_location *b = *(void **) bp; | |
2bdf28a0 | 12034 | /* A and B come from existing breakpoints having non-NULL OWNER. */ |
876fa593 JK |
12035 | int a_perm = a->owner->enable_state == bp_permanent; |
12036 | int b_perm = b->owner->enable_state == bp_permanent; | |
12037 | ||
12038 | if (a->address != b->address) | |
12039 | return (a->address > b->address) - (a->address < b->address); | |
12040 | ||
dea2aa5f LM |
12041 | /* Sort locations at the same address by their pspace number, keeping |
12042 | locations of the same inferior (in a multi-inferior environment) | |
12043 | grouped. */ | |
12044 | ||
12045 | if (a->pspace->num != b->pspace->num) | |
12046 | return ((a->pspace->num > b->pspace->num) | |
12047 | - (a->pspace->num < b->pspace->num)); | |
12048 | ||
876fa593 JK |
12049 | /* Sort permanent breakpoints first. */ |
12050 | if (a_perm != b_perm) | |
12051 | return (a_perm < b_perm) - (a_perm > b_perm); | |
12052 | ||
c56a97f9 JK |
12053 | /* Make the internal GDB representation stable across GDB runs |
12054 | where A and B memory inside GDB can differ. Breakpoint locations of | |
12055 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
12056 | |
12057 | if (a->owner->number != b->owner->number) | |
c56a97f9 JK |
12058 | return ((a->owner->number > b->owner->number) |
12059 | - (a->owner->number < b->owner->number)); | |
876fa593 JK |
12060 | |
12061 | return (a > b) - (a < b); | |
12062 | } | |
12063 | ||
876fa593 | 12064 | /* Set bp_location_placed_address_before_address_max and |
4a64f543 MS |
12065 | bp_location_shadow_len_after_address_max according to the current |
12066 | content of the bp_location array. */ | |
f7545552 TT |
12067 | |
12068 | static void | |
876fa593 | 12069 | bp_location_target_extensions_update (void) |
f7545552 | 12070 | { |
876fa593 JK |
12071 | struct bp_location *bl, **blp_tmp; |
12072 | ||
12073 | bp_location_placed_address_before_address_max = 0; | |
12074 | bp_location_shadow_len_after_address_max = 0; | |
12075 | ||
12076 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
12077 | { | |
12078 | CORE_ADDR start, end, addr; | |
12079 | ||
12080 | if (!bp_location_has_shadow (bl)) | |
12081 | continue; | |
12082 | ||
12083 | start = bl->target_info.placed_address; | |
12084 | end = start + bl->target_info.shadow_len; | |
12085 | ||
12086 | gdb_assert (bl->address >= start); | |
12087 | addr = bl->address - start; | |
12088 | if (addr > bp_location_placed_address_before_address_max) | |
12089 | bp_location_placed_address_before_address_max = addr; | |
12090 | ||
12091 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
12092 | ||
12093 | gdb_assert (bl->address < end); | |
12094 | addr = end - bl->address; | |
12095 | if (addr > bp_location_shadow_len_after_address_max) | |
12096 | bp_location_shadow_len_after_address_max = addr; | |
12097 | } | |
f7545552 TT |
12098 | } |
12099 | ||
1e4d1764 YQ |
12100 | /* Download tracepoint locations if they haven't been. */ |
12101 | ||
12102 | static void | |
12103 | download_tracepoint_locations (void) | |
12104 | { | |
7ed2c994 | 12105 | struct breakpoint *b; |
1e4d1764 YQ |
12106 | struct cleanup *old_chain; |
12107 | ||
12108 | if (!target_can_download_tracepoint ()) | |
12109 | return; | |
12110 | ||
12111 | old_chain = save_current_space_and_thread (); | |
12112 | ||
7ed2c994 | 12113 | ALL_TRACEPOINTS (b) |
1e4d1764 | 12114 | { |
7ed2c994 | 12115 | struct bp_location *bl; |
1e4d1764 | 12116 | struct tracepoint *t; |
f2a8bc8a | 12117 | int bp_location_downloaded = 0; |
1e4d1764 | 12118 | |
7ed2c994 | 12119 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
12120 | ? !may_insert_fast_tracepoints |
12121 | : !may_insert_tracepoints)) | |
12122 | continue; | |
12123 | ||
7ed2c994 YQ |
12124 | for (bl = b->loc; bl; bl = bl->next) |
12125 | { | |
12126 | /* In tracepoint, locations are _never_ duplicated, so | |
12127 | should_be_inserted is equivalent to | |
12128 | unduplicated_should_be_inserted. */ | |
12129 | if (!should_be_inserted (bl) || bl->inserted) | |
12130 | continue; | |
1e4d1764 | 12131 | |
7ed2c994 | 12132 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 12133 | |
7ed2c994 | 12134 | target_download_tracepoint (bl); |
1e4d1764 | 12135 | |
7ed2c994 | 12136 | bl->inserted = 1; |
f2a8bc8a | 12137 | bp_location_downloaded = 1; |
7ed2c994 YQ |
12138 | } |
12139 | t = (struct tracepoint *) b; | |
12140 | t->number_on_target = b->number; | |
f2a8bc8a YQ |
12141 | if (bp_location_downloaded) |
12142 | observer_notify_breakpoint_modified (b); | |
1e4d1764 YQ |
12143 | } |
12144 | ||
12145 | do_cleanups (old_chain); | |
12146 | } | |
12147 | ||
934709f0 PW |
12148 | /* Swap the insertion/duplication state between two locations. */ |
12149 | ||
12150 | static void | |
12151 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
12152 | { | |
12153 | const int left_inserted = left->inserted; | |
12154 | const int left_duplicate = left->duplicate; | |
b775012e | 12155 | const int left_needs_update = left->needs_update; |
934709f0 PW |
12156 | const struct bp_target_info left_target_info = left->target_info; |
12157 | ||
1e4d1764 YQ |
12158 | /* Locations of tracepoints can never be duplicated. */ |
12159 | if (is_tracepoint (left->owner)) | |
12160 | gdb_assert (!left->duplicate); | |
12161 | if (is_tracepoint (right->owner)) | |
12162 | gdb_assert (!right->duplicate); | |
12163 | ||
934709f0 PW |
12164 | left->inserted = right->inserted; |
12165 | left->duplicate = right->duplicate; | |
b775012e | 12166 | left->needs_update = right->needs_update; |
934709f0 PW |
12167 | left->target_info = right->target_info; |
12168 | right->inserted = left_inserted; | |
12169 | right->duplicate = left_duplicate; | |
b775012e | 12170 | right->needs_update = left_needs_update; |
934709f0 PW |
12171 | right->target_info = left_target_info; |
12172 | } | |
12173 | ||
b775012e LM |
12174 | /* Force the re-insertion of the locations at ADDRESS. This is called |
12175 | once a new/deleted/modified duplicate location is found and we are evaluating | |
12176 | conditions on the target's side. Such conditions need to be updated on | |
12177 | the target. */ | |
12178 | ||
12179 | static void | |
12180 | force_breakpoint_reinsertion (struct bp_location *bl) | |
12181 | { | |
12182 | struct bp_location **locp = NULL, **loc2p; | |
12183 | struct bp_location *loc; | |
12184 | CORE_ADDR address = 0; | |
12185 | int pspace_num; | |
12186 | ||
12187 | address = bl->address; | |
12188 | pspace_num = bl->pspace->num; | |
12189 | ||
12190 | /* This is only meaningful if the target is | |
12191 | evaluating conditions and if the user has | |
12192 | opted for condition evaluation on the target's | |
12193 | side. */ | |
12194 | if (gdb_evaluates_breakpoint_condition_p () | |
12195 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
12196 | return; | |
12197 | ||
12198 | /* Flag all breakpoint locations with this address and | |
12199 | the same program space as the location | |
12200 | as "its condition has changed". We need to | |
12201 | update the conditions on the target's side. */ | |
12202 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
12203 | { | |
12204 | loc = *loc2p; | |
12205 | ||
12206 | if (!is_breakpoint (loc->owner) | |
12207 | || pspace_num != loc->pspace->num) | |
12208 | continue; | |
12209 | ||
12210 | /* Flag the location appropriately. We use a different state to | |
12211 | let everyone know that we already updated the set of locations | |
12212 | with addr bl->address and program space bl->pspace. This is so | |
12213 | we don't have to keep calling these functions just to mark locations | |
12214 | that have already been marked. */ | |
12215 | loc->condition_changed = condition_updated; | |
12216 | ||
12217 | /* Free the agent expression bytecode as well. We will compute | |
12218 | it later on. */ | |
12219 | if (loc->cond_bytecode) | |
12220 | { | |
12221 | free_agent_expr (loc->cond_bytecode); | |
12222 | loc->cond_bytecode = NULL; | |
12223 | } | |
12224 | } | |
12225 | } | |
12226 | ||
4cd9bd08 | 12227 | /* If SHOULD_INSERT is false, do not insert any breakpoint locations |
b60e7edf PA |
12228 | into the inferior, only remove already-inserted locations that no |
12229 | longer should be inserted. Functions that delete a breakpoint or | |
12230 | breakpoints should pass false, so that deleting a breakpoint | |
12231 | doesn't have the side effect of inserting the locations of other | |
12232 | breakpoints that are marked not-inserted, but should_be_inserted | |
12233 | returns true on them. | |
12234 | ||
12235 | This behaviour is useful is situations close to tear-down -- e.g., | |
12236 | after an exec, while the target still has execution, but breakpoint | |
12237 | shadows of the previous executable image should *NOT* be restored | |
12238 | to the new image; or before detaching, where the target still has | |
12239 | execution and wants to delete breakpoints from GDB's lists, and all | |
12240 | breakpoints had already been removed from the inferior. */ | |
12241 | ||
0d381245 | 12242 | static void |
b60e7edf | 12243 | update_global_location_list (int should_insert) |
0d381245 | 12244 | { |
74960c60 | 12245 | struct breakpoint *b; |
876fa593 | 12246 | struct bp_location **locp, *loc; |
f7545552 | 12247 | struct cleanup *cleanups; |
b775012e LM |
12248 | /* Last breakpoint location address that was marked for update. */ |
12249 | CORE_ADDR last_addr = 0; | |
12250 | /* Last breakpoint location program space that was marked for update. */ | |
12251 | int last_pspace_num = -1; | |
f7545552 | 12252 | |
2d134ed3 PA |
12253 | /* Used in the duplicates detection below. When iterating over all |
12254 | bp_locations, points to the first bp_location of a given address. | |
12255 | Breakpoints and watchpoints of different types are never | |
12256 | duplicates of each other. Keep one pointer for each type of | |
12257 | breakpoint/watchpoint, so we only need to loop over all locations | |
12258 | once. */ | |
12259 | struct bp_location *bp_loc_first; /* breakpoint */ | |
12260 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
12261 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
12262 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 12263 | |
4a64f543 MS |
12264 | /* Saved former bp_location array which we compare against the newly |
12265 | built bp_location from the current state of ALL_BREAKPOINTS. */ | |
876fa593 JK |
12266 | struct bp_location **old_location, **old_locp; |
12267 | unsigned old_location_count; | |
12268 | ||
12269 | old_location = bp_location; | |
12270 | old_location_count = bp_location_count; | |
12271 | bp_location = NULL; | |
12272 | bp_location_count = 0; | |
12273 | cleanups = make_cleanup (xfree, old_location); | |
0d381245 | 12274 | |
74960c60 | 12275 | ALL_BREAKPOINTS (b) |
876fa593 JK |
12276 | for (loc = b->loc; loc; loc = loc->next) |
12277 | bp_location_count++; | |
12278 | ||
12279 | bp_location = xmalloc (sizeof (*bp_location) * bp_location_count); | |
12280 | locp = bp_location; | |
12281 | ALL_BREAKPOINTS (b) | |
12282 | for (loc = b->loc; loc; loc = loc->next) | |
12283 | *locp++ = loc; | |
12284 | qsort (bp_location, bp_location_count, sizeof (*bp_location), | |
494cfb0f | 12285 | bp_location_compare); |
876fa593 JK |
12286 | |
12287 | bp_location_target_extensions_update (); | |
74960c60 | 12288 | |
4a64f543 MS |
12289 | /* Identify bp_location instances that are no longer present in the |
12290 | new list, and therefore should be freed. Note that it's not | |
12291 | necessary that those locations should be removed from inferior -- | |
12292 | if there's another location at the same address (previously | |
12293 | marked as duplicate), we don't need to remove/insert the | |
12294 | location. | |
876fa593 | 12295 | |
4a64f543 MS |
12296 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
12297 | and former bp_location array state respectively. */ | |
876fa593 JK |
12298 | |
12299 | locp = bp_location; | |
12300 | for (old_locp = old_location; old_locp < old_location + old_location_count; | |
12301 | old_locp++) | |
74960c60 | 12302 | { |
876fa593 | 12303 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 12304 | struct bp_location **loc2p; |
876fa593 | 12305 | |
e5dd4106 | 12306 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 12307 | not, we have to free it. */ |
c7d46a38 | 12308 | int found_object = 0; |
20874c92 VP |
12309 | /* Tells if the location should remain inserted in the target. */ |
12310 | int keep_in_target = 0; | |
12311 | int removed = 0; | |
876fa593 | 12312 | |
4a64f543 MS |
12313 | /* Skip LOCP entries which will definitely never be needed. |
12314 | Stop either at or being the one matching OLD_LOC. */ | |
876fa593 | 12315 | while (locp < bp_location + bp_location_count |
c7d46a38 | 12316 | && (*locp)->address < old_loc->address) |
876fa593 | 12317 | locp++; |
c7d46a38 PA |
12318 | |
12319 | for (loc2p = locp; | |
12320 | (loc2p < bp_location + bp_location_count | |
12321 | && (*loc2p)->address == old_loc->address); | |
12322 | loc2p++) | |
12323 | { | |
b775012e LM |
12324 | /* Check if this is a new/duplicated location or a duplicated |
12325 | location that had its condition modified. If so, we want to send | |
12326 | its condition to the target if evaluation of conditions is taking | |
12327 | place there. */ | |
12328 | if ((*loc2p)->condition_changed == condition_modified | |
12329 | && (last_addr != old_loc->address | |
12330 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 12331 | { |
b775012e LM |
12332 | force_breakpoint_reinsertion (*loc2p); |
12333 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 12334 | } |
b775012e LM |
12335 | |
12336 | if (*loc2p == old_loc) | |
12337 | found_object = 1; | |
c7d46a38 | 12338 | } |
74960c60 | 12339 | |
b775012e LM |
12340 | /* We have already handled this address, update it so that we don't |
12341 | have to go through updates again. */ | |
12342 | last_addr = old_loc->address; | |
12343 | ||
12344 | /* Target-side condition evaluation: Handle deleted locations. */ | |
12345 | if (!found_object) | |
12346 | force_breakpoint_reinsertion (old_loc); | |
12347 | ||
4a64f543 MS |
12348 | /* If this location is no longer present, and inserted, look if |
12349 | there's maybe a new location at the same address. If so, | |
12350 | mark that one inserted, and don't remove this one. This is | |
12351 | needed so that we don't have a time window where a breakpoint | |
12352 | at certain location is not inserted. */ | |
74960c60 | 12353 | |
876fa593 | 12354 | if (old_loc->inserted) |
0d381245 | 12355 | { |
4a64f543 MS |
12356 | /* If the location is inserted now, we might have to remove |
12357 | it. */ | |
74960c60 | 12358 | |
876fa593 | 12359 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 12360 | { |
4a64f543 MS |
12361 | /* The location is still present in the location list, |
12362 | and still should be inserted. Don't do anything. */ | |
20874c92 | 12363 | keep_in_target = 1; |
74960c60 VP |
12364 | } |
12365 | else | |
12366 | { | |
b775012e LM |
12367 | /* This location still exists, but it won't be kept in the |
12368 | target since it may have been disabled. We proceed to | |
12369 | remove its target-side condition. */ | |
12370 | ||
4a64f543 MS |
12371 | /* The location is either no longer present, or got |
12372 | disabled. See if there's another location at the | |
12373 | same address, in which case we don't need to remove | |
12374 | this one from the target. */ | |
876fa593 | 12375 | |
2bdf28a0 | 12376 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
12377 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
12378 | { | |
876fa593 | 12379 | for (loc2p = locp; |
c7d46a38 PA |
12380 | (loc2p < bp_location + bp_location_count |
12381 | && (*loc2p)->address == old_loc->address); | |
876fa593 JK |
12382 | loc2p++) |
12383 | { | |
12384 | struct bp_location *loc2 = *loc2p; | |
12385 | ||
2d134ed3 | 12386 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 12387 | { |
85d721b8 PA |
12388 | /* Read watchpoint locations are switched to |
12389 | access watchpoints, if the former are not | |
12390 | supported, but the latter are. */ | |
12391 | if (is_hardware_watchpoint (old_loc->owner)) | |
12392 | { | |
12393 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
12394 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
12395 | } | |
12396 | ||
934709f0 PW |
12397 | /* loc2 is a duplicated location. We need to check |
12398 | if it should be inserted in case it will be | |
12399 | unduplicated. */ | |
12400 | if (loc2 != old_loc | |
12401 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 12402 | { |
934709f0 | 12403 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
12404 | keep_in_target = 1; |
12405 | break; | |
12406 | } | |
876fa593 JK |
12407 | } |
12408 | } | |
12409 | } | |
74960c60 VP |
12410 | } |
12411 | ||
20874c92 VP |
12412 | if (!keep_in_target) |
12413 | { | |
876fa593 | 12414 | if (remove_breakpoint (old_loc, mark_uninserted)) |
20874c92 | 12415 | { |
4a64f543 MS |
12416 | /* This is just about all we can do. We could keep |
12417 | this location on the global list, and try to | |
12418 | remove it next time, but there's no particular | |
12419 | reason why we will succeed next time. | |
20874c92 | 12420 | |
4a64f543 MS |
12421 | Note that at this point, old_loc->owner is still |
12422 | valid, as delete_breakpoint frees the breakpoint | |
12423 | only after calling us. */ | |
3e43a32a MS |
12424 | printf_filtered (_("warning: Error removing " |
12425 | "breakpoint %d\n"), | |
876fa593 | 12426 | old_loc->owner->number); |
20874c92 VP |
12427 | } |
12428 | removed = 1; | |
12429 | } | |
0d381245 | 12430 | } |
74960c60 VP |
12431 | |
12432 | if (!found_object) | |
1c5cfe86 | 12433 | { |
db82e815 PA |
12434 | if (removed && non_stop |
12435 | && breakpoint_address_is_meaningful (old_loc->owner) | |
12436 | && !is_hardware_watchpoint (old_loc->owner)) | |
20874c92 | 12437 | { |
db82e815 PA |
12438 | /* This location was removed from the target. In |
12439 | non-stop mode, a race condition is possible where | |
12440 | we've removed a breakpoint, but stop events for that | |
12441 | breakpoint are already queued and will arrive later. | |
12442 | We apply an heuristic to be able to distinguish such | |
12443 | SIGTRAPs from other random SIGTRAPs: we keep this | |
12444 | breakpoint location for a bit, and will retire it | |
12445 | after we see some number of events. The theory here | |
12446 | is that reporting of events should, "on the average", | |
12447 | be fair, so after a while we'll see events from all | |
12448 | threads that have anything of interest, and no longer | |
12449 | need to keep this breakpoint location around. We | |
12450 | don't hold locations forever so to reduce chances of | |
12451 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
12452 | SIGTRAP. | |
12453 | ||
12454 | The heuristic failing can be disastrous on | |
12455 | decr_pc_after_break targets. | |
12456 | ||
12457 | On decr_pc_after_break targets, like e.g., x86-linux, | |
12458 | if we fail to recognize a late breakpoint SIGTRAP, | |
12459 | because events_till_retirement has reached 0 too | |
12460 | soon, we'll fail to do the PC adjustment, and report | |
12461 | a random SIGTRAP to the user. When the user resumes | |
12462 | the inferior, it will most likely immediately crash | |
2dec564e | 12463 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
12464 | corrupted, because of being resumed e.g., in the |
12465 | middle of a multi-byte instruction, or skipped a | |
12466 | one-byte instruction. This was actually seen happen | |
12467 | on native x86-linux, and should be less rare on | |
12468 | targets that do not support new thread events, like | |
12469 | remote, due to the heuristic depending on | |
12470 | thread_count. | |
12471 | ||
12472 | Mistaking a random SIGTRAP for a breakpoint trap | |
12473 | causes similar symptoms (PC adjustment applied when | |
12474 | it shouldn't), but then again, playing with SIGTRAPs | |
12475 | behind the debugger's back is asking for trouble. | |
12476 | ||
12477 | Since hardware watchpoint traps are always | |
12478 | distinguishable from other traps, so we don't need to | |
12479 | apply keep hardware watchpoint moribund locations | |
12480 | around. We simply always ignore hardware watchpoint | |
12481 | traps we can no longer explain. */ | |
12482 | ||
876fa593 JK |
12483 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
12484 | old_loc->owner = NULL; | |
20874c92 | 12485 | |
876fa593 | 12486 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
12487 | } |
12488 | else | |
f431efe5 PA |
12489 | { |
12490 | old_loc->owner = NULL; | |
12491 | decref_bp_location (&old_loc); | |
12492 | } | |
20874c92 | 12493 | } |
74960c60 | 12494 | } |
1c5cfe86 | 12495 | |
348d480f PA |
12496 | /* Rescan breakpoints at the same address and section, marking the |
12497 | first one as "first" and any others as "duplicates". This is so | |
12498 | that the bpt instruction is only inserted once. If we have a | |
12499 | permanent breakpoint at the same place as BPT, make that one the | |
12500 | official one, and the rest as duplicates. Permanent breakpoints | |
12501 | are sorted first for the same address. | |
12502 | ||
12503 | Do the same for hardware watchpoints, but also considering the | |
12504 | watchpoint's type (regular/access/read) and length. */ | |
12505 | ||
12506 | bp_loc_first = NULL; | |
12507 | wp_loc_first = NULL; | |
12508 | awp_loc_first = NULL; | |
12509 | rwp_loc_first = NULL; | |
12510 | ALL_BP_LOCATIONS (loc, locp) | |
12511 | { | |
12512 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
12513 | non-NULL. */ | |
348d480f | 12514 | struct bp_location **loc_first_p; |
d3fbdd86 | 12515 | b = loc->owner; |
348d480f | 12516 | |
6f380991 | 12517 | if (!unduplicated_should_be_inserted (loc) |
348d480f | 12518 | || !breakpoint_address_is_meaningful (b) |
1e4d1764 YQ |
12519 | /* Don't detect duplicate for tracepoint locations because they are |
12520 | never duplicated. See the comments in field `duplicate' of | |
12521 | `struct bp_location'. */ | |
348d480f | 12522 | || is_tracepoint (b)) |
b775012e LM |
12523 | { |
12524 | /* Clear the condition modification flag. */ | |
12525 | loc->condition_changed = condition_unchanged; | |
12526 | continue; | |
12527 | } | |
348d480f PA |
12528 | |
12529 | /* Permanent breakpoint should always be inserted. */ | |
12530 | if (b->enable_state == bp_permanent && ! loc->inserted) | |
12531 | internal_error (__FILE__, __LINE__, | |
12532 | _("allegedly permanent breakpoint is not " | |
12533 | "actually inserted")); | |
12534 | ||
12535 | if (b->type == bp_hardware_watchpoint) | |
12536 | loc_first_p = &wp_loc_first; | |
12537 | else if (b->type == bp_read_watchpoint) | |
12538 | loc_first_p = &rwp_loc_first; | |
12539 | else if (b->type == bp_access_watchpoint) | |
12540 | loc_first_p = &awp_loc_first; | |
12541 | else | |
12542 | loc_first_p = &bp_loc_first; | |
12543 | ||
12544 | if (*loc_first_p == NULL | |
12545 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
12546 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
12547 | { | |
12548 | *loc_first_p = loc; | |
12549 | loc->duplicate = 0; | |
b775012e LM |
12550 | |
12551 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
12552 | { | |
12553 | loc->needs_update = 1; | |
12554 | /* Clear the condition modification flag. */ | |
12555 | loc->condition_changed = condition_unchanged; | |
12556 | } | |
348d480f PA |
12557 | continue; |
12558 | } | |
12559 | ||
934709f0 PW |
12560 | |
12561 | /* This and the above ensure the invariant that the first location | |
12562 | is not duplicated, and is the inserted one. | |
12563 | All following are marked as duplicated, and are not inserted. */ | |
12564 | if (loc->inserted) | |
12565 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
12566 | loc->duplicate = 1; |
12567 | ||
b775012e LM |
12568 | /* Clear the condition modification flag. */ |
12569 | loc->condition_changed = condition_unchanged; | |
12570 | ||
348d480f PA |
12571 | if ((*loc_first_p)->owner->enable_state == bp_permanent && loc->inserted |
12572 | && b->enable_state != bp_permanent) | |
12573 | internal_error (__FILE__, __LINE__, | |
12574 | _("another breakpoint was inserted on top of " | |
12575 | "a permanent breakpoint")); | |
12576 | } | |
12577 | ||
b775012e | 12578 | if (breakpoints_always_inserted_mode () |
348d480f | 12579 | && (have_live_inferiors () |
f5656ead | 12580 | || (gdbarch_has_global_breakpoints (target_gdbarch ())))) |
b775012e LM |
12581 | { |
12582 | if (should_insert) | |
12583 | insert_breakpoint_locations (); | |
12584 | else | |
12585 | { | |
12586 | /* Though should_insert is false, we may need to update conditions | |
12587 | on the target's side if it is evaluating such conditions. We | |
12588 | only update conditions for locations that are marked | |
12589 | "needs_update". */ | |
12590 | update_inserted_breakpoint_locations (); | |
12591 | } | |
12592 | } | |
348d480f | 12593 | |
1e4d1764 YQ |
12594 | if (should_insert) |
12595 | download_tracepoint_locations (); | |
12596 | ||
348d480f PA |
12597 | do_cleanups (cleanups); |
12598 | } | |
12599 | ||
12600 | void | |
12601 | breakpoint_retire_moribund (void) | |
12602 | { | |
12603 | struct bp_location *loc; | |
12604 | int ix; | |
12605 | ||
12606 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
12607 | if (--(loc->events_till_retirement) == 0) | |
12608 | { | |
12609 | decref_bp_location (&loc); | |
12610 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
12611 | --ix; | |
12612 | } | |
12613 | } | |
12614 | ||
12615 | static void | |
12616 | update_global_location_list_nothrow (int inserting) | |
12617 | { | |
bfd189b1 | 12618 | volatile struct gdb_exception e; |
348d480f PA |
12619 | |
12620 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
12621 | update_global_location_list (inserting); | |
12622 | } | |
12623 | ||
12624 | /* Clear BKP from a BPS. */ | |
12625 | ||
12626 | static void | |
12627 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12628 | { | |
12629 | bpstat bs; | |
12630 | ||
12631 | for (bs = bps; bs; bs = bs->next) | |
12632 | if (bs->breakpoint_at == bpt) | |
12633 | { | |
12634 | bs->breakpoint_at = NULL; | |
12635 | bs->old_val = NULL; | |
12636 | /* bs->commands will be freed later. */ | |
12637 | } | |
12638 | } | |
12639 | ||
12640 | /* Callback for iterate_over_threads. */ | |
12641 | static int | |
12642 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12643 | { | |
12644 | struct breakpoint *bpt = data; | |
12645 | ||
12646 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12647 | return 0; | |
12648 | } | |
12649 | ||
12650 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12651 | callbacks. */ | |
12652 | ||
12653 | static void | |
12654 | say_where (struct breakpoint *b) | |
12655 | { | |
79a45e25 | 12656 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12657 | struct value_print_options opts; |
12658 | ||
12659 | get_user_print_options (&opts); | |
12660 | ||
12661 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12662 | single string. */ | |
12663 | if (b->loc == NULL) | |
12664 | { | |
12665 | printf_filtered (_(" (%s) pending."), b->addr_string); | |
12666 | } | |
12667 | else | |
12668 | { | |
f8eba3c6 | 12669 | if (opts.addressprint || b->loc->source_file == NULL) |
348d480f PA |
12670 | { |
12671 | printf_filtered (" at "); | |
12672 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), | |
12673 | gdb_stdout); | |
12674 | } | |
f8eba3c6 TT |
12675 | if (b->loc->source_file) |
12676 | { | |
12677 | /* If there is a single location, we can print the location | |
12678 | more nicely. */ | |
12679 | if (b->loc->next == NULL) | |
12680 | printf_filtered (": file %s, line %d.", | |
12681 | b->loc->source_file, b->loc->line_number); | |
12682 | else | |
12683 | /* This is not ideal, but each location may have a | |
12684 | different file name, and this at least reflects the | |
12685 | real situation somewhat. */ | |
12686 | printf_filtered (": %s.", b->addr_string); | |
12687 | } | |
348d480f PA |
12688 | |
12689 | if (b->loc->next) | |
12690 | { | |
12691 | struct bp_location *loc = b->loc; | |
12692 | int n = 0; | |
12693 | for (; loc; loc = loc->next) | |
12694 | ++n; | |
12695 | printf_filtered (" (%d locations)", n); | |
12696 | } | |
12697 | } | |
12698 | } | |
12699 | ||
348d480f PA |
12700 | /* Default bp_location_ops methods. */ |
12701 | ||
12702 | static void | |
12703 | bp_location_dtor (struct bp_location *self) | |
12704 | { | |
12705 | xfree (self->cond); | |
b775012e LM |
12706 | if (self->cond_bytecode) |
12707 | free_agent_expr (self->cond_bytecode); | |
348d480f | 12708 | xfree (self->function_name); |
f8eba3c6 | 12709 | xfree (self->source_file); |
348d480f PA |
12710 | } |
12711 | ||
12712 | static const struct bp_location_ops bp_location_ops = | |
12713 | { | |
12714 | bp_location_dtor | |
12715 | }; | |
12716 | ||
2060206e PA |
12717 | /* Default breakpoint_ops methods all breakpoint_ops ultimately |
12718 | inherit from. */ | |
348d480f | 12719 | |
2060206e PA |
12720 | static void |
12721 | base_breakpoint_dtor (struct breakpoint *self) | |
348d480f PA |
12722 | { |
12723 | decref_counted_command_line (&self->commands); | |
12724 | xfree (self->cond_string); | |
348d480f | 12725 | xfree (self->addr_string); |
f8eba3c6 | 12726 | xfree (self->filter); |
348d480f | 12727 | xfree (self->addr_string_range_end); |
348d480f PA |
12728 | } |
12729 | ||
2060206e PA |
12730 | static struct bp_location * |
12731 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f PA |
12732 | { |
12733 | struct bp_location *loc; | |
12734 | ||
12735 | loc = XNEW (struct bp_location); | |
12736 | init_bp_location (loc, &bp_location_ops, self); | |
12737 | return loc; | |
12738 | } | |
12739 | ||
2060206e PA |
12740 | static void |
12741 | base_breakpoint_re_set (struct breakpoint *b) | |
12742 | { | |
12743 | /* Nothing to re-set. */ | |
12744 | } | |
12745 | ||
12746 | #define internal_error_pure_virtual_called() \ | |
12747 | gdb_assert_not_reached ("pure virtual function called") | |
12748 | ||
12749 | static int | |
12750 | base_breakpoint_insert_location (struct bp_location *bl) | |
12751 | { | |
12752 | internal_error_pure_virtual_called (); | |
12753 | } | |
12754 | ||
12755 | static int | |
12756 | base_breakpoint_remove_location (struct bp_location *bl) | |
12757 | { | |
12758 | internal_error_pure_virtual_called (); | |
12759 | } | |
12760 | ||
12761 | static int | |
12762 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
12763 | struct address_space *aspace, | |
09ac7c10 TT |
12764 | CORE_ADDR bp_addr, |
12765 | const struct target_waitstatus *ws) | |
2060206e PA |
12766 | { |
12767 | internal_error_pure_virtual_called (); | |
12768 | } | |
12769 | ||
12770 | static void | |
12771 | base_breakpoint_check_status (bpstat bs) | |
12772 | { | |
12773 | /* Always stop. */ | |
12774 | } | |
12775 | ||
12776 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12777 | errors. */ | |
12778 | ||
12779 | static int | |
12780 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12781 | { | |
12782 | internal_error_pure_virtual_called (); | |
12783 | } | |
12784 | ||
12785 | /* A "resources_needed" breakpoint_ops method that just internal | |
12786 | errors. */ | |
12787 | ||
12788 | static int | |
12789 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12790 | { | |
12791 | internal_error_pure_virtual_called (); | |
12792 | } | |
12793 | ||
12794 | static enum print_stop_action | |
12795 | base_breakpoint_print_it (bpstat bs) | |
12796 | { | |
12797 | internal_error_pure_virtual_called (); | |
12798 | } | |
12799 | ||
12800 | static void | |
12801 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12802 | struct ui_out *uiout) | |
12803 | { | |
12804 | /* nothing */ | |
12805 | } | |
12806 | ||
12807 | static void | |
12808 | base_breakpoint_print_mention (struct breakpoint *b) | |
12809 | { | |
12810 | internal_error_pure_virtual_called (); | |
12811 | } | |
12812 | ||
12813 | static void | |
12814 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12815 | { | |
12816 | internal_error_pure_virtual_called (); | |
12817 | } | |
12818 | ||
983af33b SDJ |
12819 | static void |
12820 | base_breakpoint_create_sals_from_address (char **arg, | |
12821 | struct linespec_result *canonical, | |
12822 | enum bptype type_wanted, | |
12823 | char *addr_start, | |
12824 | char **copy_arg) | |
12825 | { | |
12826 | internal_error_pure_virtual_called (); | |
12827 | } | |
12828 | ||
12829 | static void | |
12830 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12831 | struct linespec_result *c, | |
12832 | struct linespec_sals *lsal, | |
12833 | char *cond_string, | |
e7e0cddf | 12834 | char *extra_string, |
983af33b SDJ |
12835 | enum bptype type_wanted, |
12836 | enum bpdisp disposition, | |
12837 | int thread, | |
12838 | int task, int ignore_count, | |
12839 | const struct breakpoint_ops *o, | |
12840 | int from_tty, int enabled, | |
44f238bb | 12841 | int internal, unsigned flags) |
983af33b SDJ |
12842 | { |
12843 | internal_error_pure_virtual_called (); | |
12844 | } | |
12845 | ||
12846 | static void | |
12847 | base_breakpoint_decode_linespec (struct breakpoint *b, char **s, | |
12848 | struct symtabs_and_lines *sals) | |
12849 | { | |
12850 | internal_error_pure_virtual_called (); | |
12851 | } | |
12852 | ||
2060206e PA |
12853 | static struct breakpoint_ops base_breakpoint_ops = |
12854 | { | |
12855 | base_breakpoint_dtor, | |
12856 | base_breakpoint_allocate_location, | |
12857 | base_breakpoint_re_set, | |
12858 | base_breakpoint_insert_location, | |
12859 | base_breakpoint_remove_location, | |
12860 | base_breakpoint_breakpoint_hit, | |
12861 | base_breakpoint_check_status, | |
12862 | base_breakpoint_resources_needed, | |
12863 | base_breakpoint_works_in_software_mode, | |
12864 | base_breakpoint_print_it, | |
12865 | NULL, | |
12866 | base_breakpoint_print_one_detail, | |
12867 | base_breakpoint_print_mention, | |
983af33b SDJ |
12868 | base_breakpoint_print_recreate, |
12869 | base_breakpoint_create_sals_from_address, | |
12870 | base_breakpoint_create_breakpoints_sal, | |
12871 | base_breakpoint_decode_linespec, | |
2060206e PA |
12872 | }; |
12873 | ||
12874 | /* Default breakpoint_ops methods. */ | |
12875 | ||
12876 | static void | |
348d480f PA |
12877 | bkpt_re_set (struct breakpoint *b) |
12878 | { | |
06edf0c0 PA |
12879 | /* FIXME: is this still reachable? */ |
12880 | if (b->addr_string == NULL) | |
12881 | { | |
12882 | /* Anything without a string can't be re-set. */ | |
348d480f | 12883 | delete_breakpoint (b); |
06edf0c0 | 12884 | return; |
348d480f | 12885 | } |
06edf0c0 PA |
12886 | |
12887 | breakpoint_re_set_default (b); | |
348d480f PA |
12888 | } |
12889 | ||
2060206e | 12890 | static int |
348d480f PA |
12891 | bkpt_insert_location (struct bp_location *bl) |
12892 | { | |
12893 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12894 | return target_insert_hw_breakpoint (bl->gdbarch, | |
12895 | &bl->target_info); | |
12896 | else | |
12897 | return target_insert_breakpoint (bl->gdbarch, | |
12898 | &bl->target_info); | |
12899 | } | |
12900 | ||
2060206e | 12901 | static int |
348d480f PA |
12902 | bkpt_remove_location (struct bp_location *bl) |
12903 | { | |
12904 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12905 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12906 | else | |
12907 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info); | |
12908 | } | |
12909 | ||
2060206e | 12910 | static int |
348d480f | 12911 | bkpt_breakpoint_hit (const struct bp_location *bl, |
09ac7c10 TT |
12912 | struct address_space *aspace, CORE_ADDR bp_addr, |
12913 | const struct target_waitstatus *ws) | |
348d480f PA |
12914 | { |
12915 | struct breakpoint *b = bl->owner; | |
12916 | ||
09ac7c10 | 12917 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12918 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12919 | return 0; |
12920 | ||
348d480f PA |
12921 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12922 | aspace, bp_addr)) | |
12923 | return 0; | |
12924 | ||
12925 | if (overlay_debugging /* unmapped overlay section */ | |
12926 | && section_is_overlay (bl->section) | |
12927 | && !section_is_mapped (bl->section)) | |
12928 | return 0; | |
12929 | ||
12930 | return 1; | |
12931 | } | |
12932 | ||
2060206e | 12933 | static int |
348d480f PA |
12934 | bkpt_resources_needed (const struct bp_location *bl) |
12935 | { | |
12936 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12937 | ||
12938 | return 1; | |
12939 | } | |
12940 | ||
2060206e | 12941 | static enum print_stop_action |
348d480f PA |
12942 | bkpt_print_it (bpstat bs) |
12943 | { | |
348d480f PA |
12944 | struct breakpoint *b; |
12945 | const struct bp_location *bl; | |
001c8c33 | 12946 | int bp_temp; |
79a45e25 | 12947 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12948 | |
12949 | gdb_assert (bs->bp_location_at != NULL); | |
12950 | ||
12951 | bl = bs->bp_location_at; | |
12952 | b = bs->breakpoint_at; | |
12953 | ||
001c8c33 PA |
12954 | bp_temp = b->disposition == disp_del; |
12955 | if (bl->address != bl->requested_address) | |
12956 | breakpoint_adjustment_warning (bl->requested_address, | |
12957 | bl->address, | |
12958 | b->number, 1); | |
12959 | annotate_breakpoint (b->number); | |
12960 | if (bp_temp) | |
12961 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
12962 | else | |
12963 | ui_out_text (uiout, "\nBreakpoint "); | |
12964 | if (ui_out_is_mi_like_p (uiout)) | |
348d480f | 12965 | { |
001c8c33 PA |
12966 | ui_out_field_string (uiout, "reason", |
12967 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
12968 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
06edf0c0 | 12969 | } |
001c8c33 PA |
12970 | ui_out_field_int (uiout, "bkptno", b->number); |
12971 | ui_out_text (uiout, ", "); | |
06edf0c0 | 12972 | |
001c8c33 | 12973 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12974 | } |
12975 | ||
2060206e | 12976 | static void |
06edf0c0 PA |
12977 | bkpt_print_mention (struct breakpoint *b) |
12978 | { | |
79a45e25 | 12979 | if (ui_out_is_mi_like_p (current_uiout)) |
06edf0c0 PA |
12980 | return; |
12981 | ||
12982 | switch (b->type) | |
12983 | { | |
12984 | case bp_breakpoint: | |
12985 | case bp_gnu_ifunc_resolver: | |
12986 | if (b->disposition == disp_del) | |
12987 | printf_filtered (_("Temporary breakpoint")); | |
12988 | else | |
12989 | printf_filtered (_("Breakpoint")); | |
12990 | printf_filtered (_(" %d"), b->number); | |
12991 | if (b->type == bp_gnu_ifunc_resolver) | |
12992 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
12993 | break; | |
12994 | case bp_hardware_breakpoint: | |
12995 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
12996 | break; | |
e7e0cddf SS |
12997 | case bp_dprintf: |
12998 | printf_filtered (_("Dprintf %d"), b->number); | |
12999 | break; | |
06edf0c0 PA |
13000 | } |
13001 | ||
13002 | say_where (b); | |
13003 | } | |
13004 | ||
2060206e | 13005 | static void |
06edf0c0 PA |
13006 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
13007 | { | |
13008 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
13009 | fprintf_unfiltered (fp, "tbreak"); | |
13010 | else if (tp->type == bp_breakpoint) | |
13011 | fprintf_unfiltered (fp, "break"); | |
13012 | else if (tp->type == bp_hardware_breakpoint | |
13013 | && tp->disposition == disp_del) | |
13014 | fprintf_unfiltered (fp, "thbreak"); | |
13015 | else if (tp->type == bp_hardware_breakpoint) | |
13016 | fprintf_unfiltered (fp, "hbreak"); | |
13017 | else | |
13018 | internal_error (__FILE__, __LINE__, | |
13019 | _("unhandled breakpoint type %d"), (int) tp->type); | |
13020 | ||
2060206e | 13021 | fprintf_unfiltered (fp, " %s", tp->addr_string); |
dd11a36c | 13022 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
13023 | } |
13024 | ||
983af33b SDJ |
13025 | static void |
13026 | bkpt_create_sals_from_address (char **arg, | |
13027 | struct linespec_result *canonical, | |
13028 | enum bptype type_wanted, | |
13029 | char *addr_start, char **copy_arg) | |
13030 | { | |
13031 | create_sals_from_address_default (arg, canonical, type_wanted, | |
13032 | addr_start, copy_arg); | |
13033 | } | |
13034 | ||
13035 | static void | |
13036 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13037 | struct linespec_result *canonical, | |
13038 | struct linespec_sals *lsal, | |
13039 | char *cond_string, | |
e7e0cddf | 13040 | char *extra_string, |
983af33b SDJ |
13041 | enum bptype type_wanted, |
13042 | enum bpdisp disposition, | |
13043 | int thread, | |
13044 | int task, int ignore_count, | |
13045 | const struct breakpoint_ops *ops, | |
13046 | int from_tty, int enabled, | |
44f238bb | 13047 | int internal, unsigned flags) |
983af33b SDJ |
13048 | { |
13049 | create_breakpoints_sal_default (gdbarch, canonical, lsal, | |
e7e0cddf SS |
13050 | cond_string, extra_string, |
13051 | type_wanted, | |
983af33b SDJ |
13052 | disposition, thread, task, |
13053 | ignore_count, ops, from_tty, | |
44f238bb | 13054 | enabled, internal, flags); |
983af33b SDJ |
13055 | } |
13056 | ||
13057 | static void | |
13058 | bkpt_decode_linespec (struct breakpoint *b, char **s, | |
13059 | struct symtabs_and_lines *sals) | |
13060 | { | |
13061 | decode_linespec_default (b, s, sals); | |
13062 | } | |
13063 | ||
06edf0c0 PA |
13064 | /* Virtual table for internal breakpoints. */ |
13065 | ||
13066 | static void | |
13067 | internal_bkpt_re_set (struct breakpoint *b) | |
13068 | { | |
13069 | switch (b->type) | |
13070 | { | |
13071 | /* Delete overlay event and longjmp master breakpoints; they | |
13072 | will be reset later by breakpoint_re_set. */ | |
13073 | case bp_overlay_event: | |
13074 | case bp_longjmp_master: | |
13075 | case bp_std_terminate_master: | |
13076 | case bp_exception_master: | |
13077 | delete_breakpoint (b); | |
13078 | break; | |
13079 | ||
13080 | /* This breakpoint is special, it's set up when the inferior | |
13081 | starts and we really don't want to touch it. */ | |
13082 | case bp_shlib_event: | |
13083 | ||
13084 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
13085 | it is set up, we do not want to touch it. */ | |
13086 | case bp_thread_event: | |
13087 | break; | |
13088 | } | |
13089 | } | |
13090 | ||
13091 | static void | |
13092 | internal_bkpt_check_status (bpstat bs) | |
13093 | { | |
a9b3a50f PA |
13094 | if (bs->breakpoint_at->type == bp_shlib_event) |
13095 | { | |
13096 | /* If requested, stop when the dynamic linker notifies GDB of | |
13097 | events. This allows the user to get control and place | |
13098 | breakpoints in initializer routines for dynamically loaded | |
13099 | objects (among other things). */ | |
13100 | bs->stop = stop_on_solib_events; | |
13101 | bs->print = stop_on_solib_events; | |
13102 | } | |
13103 | else | |
13104 | bs->stop = 0; | |
06edf0c0 PA |
13105 | } |
13106 | ||
13107 | static enum print_stop_action | |
13108 | internal_bkpt_print_it (bpstat bs) | |
13109 | { | |
36dfb11c | 13110 | struct ui_out *uiout = current_uiout; |
06edf0c0 | 13111 | struct breakpoint *b; |
06edf0c0 | 13112 | |
06edf0c0 PA |
13113 | b = bs->breakpoint_at; |
13114 | ||
06edf0c0 PA |
13115 | switch (b->type) |
13116 | { | |
348d480f PA |
13117 | case bp_shlib_event: |
13118 | /* Did we stop because the user set the stop_on_solib_events | |
13119 | variable? (If so, we report this as a generic, "Stopped due | |
13120 | to shlib event" message.) */ | |
edcc5120 | 13121 | print_solib_event (0); |
348d480f PA |
13122 | break; |
13123 | ||
13124 | case bp_thread_event: | |
13125 | /* Not sure how we will get here. | |
13126 | GDB should not stop for these breakpoints. */ | |
13127 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13128 | break; |
13129 | ||
13130 | case bp_overlay_event: | |
13131 | /* By analogy with the thread event, GDB should not stop for these. */ | |
13132 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13133 | break; |
13134 | ||
13135 | case bp_longjmp_master: | |
13136 | /* These should never be enabled. */ | |
13137 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13138 | break; |
13139 | ||
13140 | case bp_std_terminate_master: | |
13141 | /* These should never be enabled. */ | |
13142 | printf_filtered (_("std::terminate Master Breakpoint: " | |
13143 | "gdb should not stop!\n")); | |
348d480f PA |
13144 | break; |
13145 | ||
13146 | case bp_exception_master: | |
13147 | /* These should never be enabled. */ | |
13148 | printf_filtered (_("Exception Master Breakpoint: " | |
13149 | "gdb should not stop!\n")); | |
06edf0c0 PA |
13150 | break; |
13151 | } | |
13152 | ||
001c8c33 | 13153 | return PRINT_NOTHING; |
06edf0c0 PA |
13154 | } |
13155 | ||
13156 | static void | |
13157 | internal_bkpt_print_mention (struct breakpoint *b) | |
13158 | { | |
13159 | /* Nothing to mention. These breakpoints are internal. */ | |
13160 | } | |
13161 | ||
06edf0c0 PA |
13162 | /* Virtual table for momentary breakpoints */ |
13163 | ||
13164 | static void | |
13165 | momentary_bkpt_re_set (struct breakpoint *b) | |
13166 | { | |
13167 | /* Keep temporary breakpoints, which can be encountered when we step | |
13168 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
13169 | Otherwise these should have been blown away via the cleanup chain | |
13170 | or by breakpoint_init_inferior when we rerun the executable. */ | |
13171 | } | |
13172 | ||
13173 | static void | |
13174 | momentary_bkpt_check_status (bpstat bs) | |
13175 | { | |
13176 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
13177 | } | |
13178 | ||
13179 | static enum print_stop_action | |
13180 | momentary_bkpt_print_it (bpstat bs) | |
13181 | { | |
79a45e25 PA |
13182 | struct ui_out *uiout = current_uiout; |
13183 | ||
001c8c33 | 13184 | if (ui_out_is_mi_like_p (uiout)) |
06edf0c0 | 13185 | { |
001c8c33 | 13186 | struct breakpoint *b = bs->breakpoint_at; |
348d480f | 13187 | |
001c8c33 PA |
13188 | switch (b->type) |
13189 | { | |
13190 | case bp_finish: | |
13191 | ui_out_field_string | |
13192 | (uiout, "reason", | |
13193 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
13194 | break; | |
348d480f | 13195 | |
001c8c33 PA |
13196 | case bp_until: |
13197 | ui_out_field_string | |
13198 | (uiout, "reason", | |
13199 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
13200 | break; | |
13201 | } | |
348d480f PA |
13202 | } |
13203 | ||
001c8c33 | 13204 | return PRINT_UNKNOWN; |
348d480f PA |
13205 | } |
13206 | ||
06edf0c0 PA |
13207 | static void |
13208 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 13209 | { |
06edf0c0 | 13210 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
13211 | } |
13212 | ||
e2e4d78b JK |
13213 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
13214 | ||
13215 | It gets cleared already on the removal of the first one of such placed | |
13216 | breakpoints. This is OK as they get all removed altogether. */ | |
13217 | ||
13218 | static void | |
13219 | longjmp_bkpt_dtor (struct breakpoint *self) | |
13220 | { | |
13221 | struct thread_info *tp = find_thread_id (self->thread); | |
13222 | ||
13223 | if (tp) | |
13224 | tp->initiating_frame = null_frame_id; | |
13225 | ||
13226 | momentary_breakpoint_ops.dtor (self); | |
13227 | } | |
13228 | ||
55aa24fb SDJ |
13229 | /* Specific methods for probe breakpoints. */ |
13230 | ||
13231 | static int | |
13232 | bkpt_probe_insert_location (struct bp_location *bl) | |
13233 | { | |
13234 | int v = bkpt_insert_location (bl); | |
13235 | ||
13236 | if (v == 0) | |
13237 | { | |
13238 | /* The insertion was successful, now let's set the probe's semaphore | |
13239 | if needed. */ | |
13240 | bl->probe->pops->set_semaphore (bl->probe, bl->gdbarch); | |
13241 | } | |
13242 | ||
13243 | return v; | |
13244 | } | |
13245 | ||
13246 | static int | |
13247 | bkpt_probe_remove_location (struct bp_location *bl) | |
13248 | { | |
13249 | /* Let's clear the semaphore before removing the location. */ | |
13250 | bl->probe->pops->clear_semaphore (bl->probe, bl->gdbarch); | |
13251 | ||
13252 | return bkpt_remove_location (bl); | |
13253 | } | |
13254 | ||
13255 | static void | |
13256 | bkpt_probe_create_sals_from_address (char **arg, | |
13257 | struct linespec_result *canonical, | |
13258 | enum bptype type_wanted, | |
13259 | char *addr_start, char **copy_arg) | |
13260 | { | |
13261 | struct linespec_sals lsal; | |
13262 | ||
13263 | lsal.sals = parse_probes (arg, canonical); | |
13264 | ||
13265 | *copy_arg = xstrdup (canonical->addr_string); | |
13266 | lsal.canonical = xstrdup (*copy_arg); | |
13267 | ||
13268 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
13269 | } | |
13270 | ||
13271 | static void | |
13272 | bkpt_probe_decode_linespec (struct breakpoint *b, char **s, | |
13273 | struct symtabs_and_lines *sals) | |
13274 | { | |
13275 | *sals = parse_probes (s, NULL); | |
13276 | if (!sals->sals) | |
13277 | error (_("probe not found")); | |
13278 | } | |
13279 | ||
348d480f | 13280 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 13281 | |
348d480f PA |
13282 | static void |
13283 | tracepoint_re_set (struct breakpoint *b) | |
13284 | { | |
13285 | breakpoint_re_set_default (b); | |
13286 | } | |
876fa593 | 13287 | |
348d480f PA |
13288 | static int |
13289 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
09ac7c10 TT |
13290 | struct address_space *aspace, CORE_ADDR bp_addr, |
13291 | const struct target_waitstatus *ws) | |
348d480f PA |
13292 | { |
13293 | /* By definition, the inferior does not report stops at | |
13294 | tracepoints. */ | |
13295 | return 0; | |
74960c60 VP |
13296 | } |
13297 | ||
13298 | static void | |
348d480f PA |
13299 | tracepoint_print_one_detail (const struct breakpoint *self, |
13300 | struct ui_out *uiout) | |
74960c60 | 13301 | { |
d9b3f62e PA |
13302 | struct tracepoint *tp = (struct tracepoint *) self; |
13303 | if (tp->static_trace_marker_id) | |
348d480f PA |
13304 | { |
13305 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 13306 | |
348d480f PA |
13307 | ui_out_text (uiout, "\tmarker id is "); |
13308 | ui_out_field_string (uiout, "static-tracepoint-marker-string-id", | |
d9b3f62e | 13309 | tp->static_trace_marker_id); |
348d480f PA |
13310 | ui_out_text (uiout, "\n"); |
13311 | } | |
0d381245 VP |
13312 | } |
13313 | ||
a474d7c2 | 13314 | static void |
348d480f | 13315 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 13316 | { |
79a45e25 | 13317 | if (ui_out_is_mi_like_p (current_uiout)) |
348d480f | 13318 | return; |
cc59ec59 | 13319 | |
348d480f PA |
13320 | switch (b->type) |
13321 | { | |
13322 | case bp_tracepoint: | |
13323 | printf_filtered (_("Tracepoint")); | |
13324 | printf_filtered (_(" %d"), b->number); | |
13325 | break; | |
13326 | case bp_fast_tracepoint: | |
13327 | printf_filtered (_("Fast tracepoint")); | |
13328 | printf_filtered (_(" %d"), b->number); | |
13329 | break; | |
13330 | case bp_static_tracepoint: | |
13331 | printf_filtered (_("Static tracepoint")); | |
13332 | printf_filtered (_(" %d"), b->number); | |
13333 | break; | |
13334 | default: | |
13335 | internal_error (__FILE__, __LINE__, | |
13336 | _("unhandled tracepoint type %d"), (int) b->type); | |
13337 | } | |
13338 | ||
13339 | say_where (b); | |
a474d7c2 PA |
13340 | } |
13341 | ||
348d480f | 13342 | static void |
d9b3f62e | 13343 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 13344 | { |
d9b3f62e PA |
13345 | struct tracepoint *tp = (struct tracepoint *) self; |
13346 | ||
13347 | if (self->type == bp_fast_tracepoint) | |
348d480f | 13348 | fprintf_unfiltered (fp, "ftrace"); |
d9b3f62e | 13349 | if (self->type == bp_static_tracepoint) |
348d480f | 13350 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 13351 | else if (self->type == bp_tracepoint) |
348d480f PA |
13352 | fprintf_unfiltered (fp, "trace"); |
13353 | else | |
13354 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 13355 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 13356 | |
d9b3f62e PA |
13357 | fprintf_unfiltered (fp, " %s", self->addr_string); |
13358 | print_recreate_thread (self, fp); | |
13359 | ||
13360 | if (tp->pass_count) | |
13361 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
13362 | } |
13363 | ||
983af33b SDJ |
13364 | static void |
13365 | tracepoint_create_sals_from_address (char **arg, | |
13366 | struct linespec_result *canonical, | |
13367 | enum bptype type_wanted, | |
13368 | char *addr_start, char **copy_arg) | |
13369 | { | |
13370 | create_sals_from_address_default (arg, canonical, type_wanted, | |
13371 | addr_start, copy_arg); | |
13372 | } | |
13373 | ||
13374 | static void | |
13375 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13376 | struct linespec_result *canonical, | |
13377 | struct linespec_sals *lsal, | |
13378 | char *cond_string, | |
e7e0cddf | 13379 | char *extra_string, |
983af33b SDJ |
13380 | enum bptype type_wanted, |
13381 | enum bpdisp disposition, | |
13382 | int thread, | |
13383 | int task, int ignore_count, | |
13384 | const struct breakpoint_ops *ops, | |
13385 | int from_tty, int enabled, | |
44f238bb | 13386 | int internal, unsigned flags) |
983af33b SDJ |
13387 | { |
13388 | create_breakpoints_sal_default (gdbarch, canonical, lsal, | |
e7e0cddf SS |
13389 | cond_string, extra_string, |
13390 | type_wanted, | |
983af33b SDJ |
13391 | disposition, thread, task, |
13392 | ignore_count, ops, from_tty, | |
44f238bb | 13393 | enabled, internal, flags); |
983af33b SDJ |
13394 | } |
13395 | ||
13396 | static void | |
13397 | tracepoint_decode_linespec (struct breakpoint *b, char **s, | |
13398 | struct symtabs_and_lines *sals) | |
13399 | { | |
13400 | decode_linespec_default (b, s, sals); | |
13401 | } | |
13402 | ||
2060206e | 13403 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 13404 | |
55aa24fb SDJ |
13405 | /* The breakpoint_ops structure to be use on tracepoints placed in a |
13406 | static probe. */ | |
13407 | ||
13408 | static void | |
13409 | tracepoint_probe_create_sals_from_address (char **arg, | |
13410 | struct linespec_result *canonical, | |
13411 | enum bptype type_wanted, | |
13412 | char *addr_start, char **copy_arg) | |
13413 | { | |
13414 | /* We use the same method for breakpoint on probes. */ | |
13415 | bkpt_probe_create_sals_from_address (arg, canonical, type_wanted, | |
13416 | addr_start, copy_arg); | |
13417 | } | |
13418 | ||
13419 | static void | |
13420 | tracepoint_probe_decode_linespec (struct breakpoint *b, char **s, | |
13421 | struct symtabs_and_lines *sals) | |
13422 | { | |
13423 | /* We use the same method for breakpoint on probes. */ | |
13424 | bkpt_probe_decode_linespec (b, s, sals); | |
13425 | } | |
13426 | ||
13427 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
13428 | ||
983af33b SDJ |
13429 | /* The breakpoint_ops structure to be used on static tracepoints with |
13430 | markers (`-m'). */ | |
13431 | ||
13432 | static void | |
13433 | strace_marker_create_sals_from_address (char **arg, | |
13434 | struct linespec_result *canonical, | |
13435 | enum bptype type_wanted, | |
13436 | char *addr_start, char **copy_arg) | |
13437 | { | |
13438 | struct linespec_sals lsal; | |
13439 | ||
13440 | lsal.sals = decode_static_tracepoint_spec (arg); | |
13441 | ||
13442 | *copy_arg = savestring (addr_start, *arg - addr_start); | |
13443 | ||
13444 | canonical->addr_string = xstrdup (*copy_arg); | |
13445 | lsal.canonical = xstrdup (*copy_arg); | |
13446 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
13447 | } | |
13448 | ||
13449 | static void | |
13450 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13451 | struct linespec_result *canonical, | |
13452 | struct linespec_sals *lsal, | |
13453 | char *cond_string, | |
e7e0cddf | 13454 | char *extra_string, |
983af33b SDJ |
13455 | enum bptype type_wanted, |
13456 | enum bpdisp disposition, | |
13457 | int thread, | |
13458 | int task, int ignore_count, | |
13459 | const struct breakpoint_ops *ops, | |
13460 | int from_tty, int enabled, | |
44f238bb | 13461 | int internal, unsigned flags) |
983af33b SDJ |
13462 | { |
13463 | int i; | |
13464 | ||
13465 | /* If the user is creating a static tracepoint by marker id | |
13466 | (strace -m MARKER_ID), then store the sals index, so that | |
13467 | breakpoint_re_set can try to match up which of the newly | |
13468 | found markers corresponds to this one, and, don't try to | |
13469 | expand multiple locations for each sal, given than SALS | |
13470 | already should contain all sals for MARKER_ID. */ | |
13471 | ||
13472 | for (i = 0; i < lsal->sals.nelts; ++i) | |
13473 | { | |
13474 | struct symtabs_and_lines expanded; | |
13475 | struct tracepoint *tp; | |
13476 | struct cleanup *old_chain; | |
13477 | char *addr_string; | |
13478 | ||
13479 | expanded.nelts = 1; | |
13480 | expanded.sals = &lsal->sals.sals[i]; | |
13481 | ||
13482 | addr_string = xstrdup (canonical->addr_string); | |
13483 | old_chain = make_cleanup (xfree, addr_string); | |
13484 | ||
13485 | tp = XCNEW (struct tracepoint); | |
13486 | init_breakpoint_sal (&tp->base, gdbarch, expanded, | |
13487 | addr_string, NULL, | |
e7e0cddf SS |
13488 | cond_string, extra_string, |
13489 | type_wanted, disposition, | |
983af33b | 13490 | thread, task, ignore_count, ops, |
44f238bb | 13491 | from_tty, enabled, internal, flags, |
983af33b SDJ |
13492 | canonical->special_display); |
13493 | /* Given that its possible to have multiple markers with | |
13494 | the same string id, if the user is creating a static | |
13495 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
13496 | store the sals index, so that breakpoint_re_set can | |
13497 | try to match up which of the newly found markers | |
13498 | corresponds to this one */ | |
13499 | tp->static_trace_marker_id_idx = i; | |
13500 | ||
13501 | install_breakpoint (internal, &tp->base, 0); | |
13502 | ||
13503 | discard_cleanups (old_chain); | |
13504 | } | |
13505 | } | |
13506 | ||
13507 | static void | |
13508 | strace_marker_decode_linespec (struct breakpoint *b, char **s, | |
13509 | struct symtabs_and_lines *sals) | |
13510 | { | |
13511 | struct tracepoint *tp = (struct tracepoint *) b; | |
13512 | ||
13513 | *sals = decode_static_tracepoint_spec (s); | |
13514 | if (sals->nelts > tp->static_trace_marker_id_idx) | |
13515 | { | |
13516 | sals->sals[0] = sals->sals[tp->static_trace_marker_id_idx]; | |
13517 | sals->nelts = 1; | |
13518 | } | |
13519 | else | |
13520 | error (_("marker %s not found"), tp->static_trace_marker_id); | |
13521 | } | |
13522 | ||
13523 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13524 | ||
13525 | static int | |
13526 | strace_marker_p (struct breakpoint *b) | |
13527 | { | |
13528 | return b->ops == &strace_marker_breakpoint_ops; | |
13529 | } | |
13530 | ||
53a5351d | 13531 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13532 | structures. */ |
c906108c SS |
13533 | |
13534 | void | |
fba45db2 | 13535 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13536 | { |
52f0bd74 | 13537 | struct breakpoint *b; |
c906108c | 13538 | |
8a3fe4f8 | 13539 | gdb_assert (bpt != NULL); |
c906108c | 13540 | |
4a64f543 MS |
13541 | /* Has this bp already been deleted? This can happen because |
13542 | multiple lists can hold pointers to bp's. bpstat lists are | |
13543 | especial culprits. | |
13544 | ||
13545 | One example of this happening is a watchpoint's scope bp. When | |
13546 | the scope bp triggers, we notice that the watchpoint is out of | |
13547 | scope, and delete it. We also delete its scope bp. But the | |
13548 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13549 | That bpstat is then checked for auto-deleting bp's, which are | |
13550 | deleted. | |
13551 | ||
13552 | A real solution to this problem might involve reference counts in | |
13553 | bp's, and/or giving them pointers back to their referencing | |
13554 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13555 | storage when no more references were extent. A cheaper bandaid | |
13556 | was chosen. */ | |
c906108c SS |
13557 | if (bpt->type == bp_none) |
13558 | return; | |
13559 | ||
4a64f543 MS |
13560 | /* At least avoid this stale reference until the reference counting |
13561 | of breakpoints gets resolved. */ | |
d0fb5eae | 13562 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13563 | { |
d0fb5eae | 13564 | struct breakpoint *related; |
3a5c3e22 | 13565 | struct watchpoint *w; |
d0fb5eae JK |
13566 | |
13567 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13568 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13569 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13570 | w = (struct watchpoint *) bpt; |
13571 | else | |
13572 | w = NULL; | |
13573 | if (w != NULL) | |
13574 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13575 | |
13576 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13577 | for (related = bpt; related->related_breakpoint != bpt; | |
13578 | related = related->related_breakpoint); | |
13579 | related->related_breakpoint = bpt->related_breakpoint; | |
13580 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13581 | } |
13582 | ||
a9634178 TJB |
13583 | /* watch_command_1 creates a watchpoint but only sets its number if |
13584 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13585 | a problem in that process, we'll be asked to delete the half-created | |
13586 | watchpoint. In that case, don't announce the deletion. */ | |
13587 | if (bpt->number) | |
13588 | observer_notify_breakpoint_deleted (bpt); | |
c906108c | 13589 | |
c906108c SS |
13590 | if (breakpoint_chain == bpt) |
13591 | breakpoint_chain = bpt->next; | |
13592 | ||
c906108c SS |
13593 | ALL_BREAKPOINTS (b) |
13594 | if (b->next == bpt) | |
c5aa993b JM |
13595 | { |
13596 | b->next = bpt->next; | |
13597 | break; | |
13598 | } | |
c906108c | 13599 | |
f431efe5 PA |
13600 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13601 | been freed. */ | |
13602 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13603 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13604 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13605 | commands are associated with the bpstat; if we remove it here, | |
13606 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13607 | event-top.c won't do anything, and temporary breakpoints with | |
13608 | commands won't work. */ | |
13609 | ||
13610 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13611 | ||
4a64f543 MS |
13612 | /* Now that breakpoint is removed from breakpoint list, update the |
13613 | global location list. This will remove locations that used to | |
13614 | belong to this breakpoint. Do this before freeing the breakpoint | |
13615 | itself, since remove_breakpoint looks at location's owner. It | |
13616 | might be better design to have location completely | |
13617 | self-contained, but it's not the case now. */ | |
b60e7edf | 13618 | update_global_location_list (0); |
74960c60 | 13619 | |
348d480f | 13620 | bpt->ops->dtor (bpt); |
4a64f543 MS |
13621 | /* On the chance that someone will soon try again to delete this |
13622 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13623 | bpt->type = bp_none; |
b8c9b27d | 13624 | xfree (bpt); |
c906108c SS |
13625 | } |
13626 | ||
4d6140d9 AC |
13627 | static void |
13628 | do_delete_breakpoint_cleanup (void *b) | |
13629 | { | |
13630 | delete_breakpoint (b); | |
13631 | } | |
13632 | ||
13633 | struct cleanup * | |
13634 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
13635 | { | |
13636 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
13637 | } | |
13638 | ||
51be5b68 PA |
13639 | /* Iterator function to call a user-provided callback function once |
13640 | for each of B and its related breakpoints. */ | |
13641 | ||
13642 | static void | |
13643 | iterate_over_related_breakpoints (struct breakpoint *b, | |
13644 | void (*function) (struct breakpoint *, | |
13645 | void *), | |
13646 | void *data) | |
13647 | { | |
13648 | struct breakpoint *related; | |
13649 | ||
13650 | related = b; | |
13651 | do | |
13652 | { | |
13653 | struct breakpoint *next; | |
13654 | ||
13655 | /* FUNCTION may delete RELATED. */ | |
13656 | next = related->related_breakpoint; | |
13657 | ||
13658 | if (next == related) | |
13659 | { | |
13660 | /* RELATED is the last ring entry. */ | |
13661 | function (related, data); | |
13662 | ||
13663 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13664 | B. There's nothing left to do anyway, so just break | |
13665 | out. */ | |
13666 | break; | |
13667 | } | |
13668 | else | |
13669 | function (related, data); | |
13670 | ||
13671 | related = next; | |
13672 | } | |
13673 | while (related != b); | |
13674 | } | |
95a42b64 TT |
13675 | |
13676 | static void | |
13677 | do_delete_breakpoint (struct breakpoint *b, void *ignore) | |
13678 | { | |
13679 | delete_breakpoint (b); | |
13680 | } | |
13681 | ||
51be5b68 PA |
13682 | /* A callback for map_breakpoint_numbers that calls |
13683 | delete_breakpoint. */ | |
13684 | ||
13685 | static void | |
13686 | do_map_delete_breakpoint (struct breakpoint *b, void *ignore) | |
13687 | { | |
13688 | iterate_over_related_breakpoints (b, do_delete_breakpoint, NULL); | |
13689 | } | |
13690 | ||
c906108c | 13691 | void |
fba45db2 | 13692 | delete_command (char *arg, int from_tty) |
c906108c | 13693 | { |
35df4500 | 13694 | struct breakpoint *b, *b_tmp; |
c906108c | 13695 | |
ea9365bb TT |
13696 | dont_repeat (); |
13697 | ||
c906108c SS |
13698 | if (arg == 0) |
13699 | { | |
13700 | int breaks_to_delete = 0; | |
13701 | ||
46c6471b PA |
13702 | /* Delete all breakpoints if no argument. Do not delete |
13703 | internal breakpoints, these have to be deleted with an | |
13704 | explicit breakpoint number argument. */ | |
c5aa993b | 13705 | ALL_BREAKPOINTS (b) |
46c6471b | 13706 | if (user_breakpoint_p (b)) |
973d738b DJ |
13707 | { |
13708 | breaks_to_delete = 1; | |
13709 | break; | |
13710 | } | |
c906108c SS |
13711 | |
13712 | /* Ask user only if there are some breakpoints to delete. */ | |
13713 | if (!from_tty | |
e2e0b3e5 | 13714 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 13715 | { |
35df4500 | 13716 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13717 | if (user_breakpoint_p (b)) |
c5aa993b | 13718 | delete_breakpoint (b); |
c906108c SS |
13719 | } |
13720 | } | |
13721 | else | |
51be5b68 | 13722 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
c906108c SS |
13723 | } |
13724 | ||
0d381245 VP |
13725 | static int |
13726 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 13727 | { |
0d381245 | 13728 | for (; loc; loc = loc->next) |
8645ff69 UW |
13729 | if (!loc->shlib_disabled |
13730 | && !loc->pspace->executing_startup) | |
0d381245 VP |
13731 | return 0; |
13732 | return 1; | |
fe3f5fa8 VP |
13733 | } |
13734 | ||
776592bf DE |
13735 | /* Subroutine of update_breakpoint_locations to simplify it. |
13736 | Return non-zero if multiple fns in list LOC have the same name. | |
13737 | Null names are ignored. */ | |
13738 | ||
13739 | static int | |
13740 | ambiguous_names_p (struct bp_location *loc) | |
13741 | { | |
13742 | struct bp_location *l; | |
13743 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
cc59ec59 MS |
13744 | (int (*) (const void *, |
13745 | const void *)) streq, | |
776592bf DE |
13746 | NULL, xcalloc, xfree); |
13747 | ||
13748 | for (l = loc; l != NULL; l = l->next) | |
13749 | { | |
13750 | const char **slot; | |
13751 | const char *name = l->function_name; | |
13752 | ||
13753 | /* Allow for some names to be NULL, ignore them. */ | |
13754 | if (name == NULL) | |
13755 | continue; | |
13756 | ||
13757 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
13758 | INSERT); | |
4a64f543 MS |
13759 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13760 | returns NULL. */ | |
776592bf DE |
13761 | if (*slot != NULL) |
13762 | { | |
13763 | htab_delete (htab); | |
13764 | return 1; | |
13765 | } | |
13766 | *slot = name; | |
13767 | } | |
13768 | ||
13769 | htab_delete (htab); | |
13770 | return 0; | |
13771 | } | |
13772 | ||
0fb4aa4b PA |
13773 | /* When symbols change, it probably means the sources changed as well, |
13774 | and it might mean the static tracepoint markers are no longer at | |
13775 | the same address or line numbers they used to be at last we | |
13776 | checked. Losing your static tracepoints whenever you rebuild is | |
13777 | undesirable. This function tries to resync/rematch gdb static | |
13778 | tracepoints with the markers on the target, for static tracepoints | |
13779 | that have not been set by marker id. Static tracepoint that have | |
13780 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13781 | The heuristic is: | |
13782 | ||
13783 | 1) For a tracepoint set at a specific address, look for a marker at | |
13784 | the old PC. If one is found there, assume to be the same marker. | |
13785 | If the name / string id of the marker found is different from the | |
13786 | previous known name, assume that means the user renamed the marker | |
13787 | in the sources, and output a warning. | |
13788 | ||
13789 | 2) For a tracepoint set at a given line number, look for a marker | |
13790 | at the new address of the old line number. If one is found there, | |
13791 | assume to be the same marker. If the name / string id of the | |
13792 | marker found is different from the previous known name, assume that | |
13793 | means the user renamed the marker in the sources, and output a | |
13794 | warning. | |
13795 | ||
13796 | 3) If a marker is no longer found at the same address or line, it | |
13797 | may mean the marker no longer exists. But it may also just mean | |
13798 | the code changed a bit. Maybe the user added a few lines of code | |
13799 | that made the marker move up or down (in line number terms). Ask | |
13800 | the target for info about the marker with the string id as we knew | |
13801 | it. If found, update line number and address in the matching | |
13802 | static tracepoint. This will get confused if there's more than one | |
13803 | marker with the same ID (possible in UST, although unadvised | |
13804 | precisely because it confuses tools). */ | |
13805 | ||
13806 | static struct symtab_and_line | |
13807 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13808 | { | |
d9b3f62e | 13809 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13810 | struct static_tracepoint_marker marker; |
13811 | CORE_ADDR pc; | |
0fb4aa4b PA |
13812 | |
13813 | pc = sal.pc; | |
13814 | if (sal.line) | |
13815 | find_line_pc (sal.symtab, sal.line, &pc); | |
13816 | ||
13817 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13818 | { | |
d9b3f62e | 13819 | if (strcmp (tp->static_trace_marker_id, marker.str_id) != 0) |
0fb4aa4b PA |
13820 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
13821 | b->number, | |
d9b3f62e | 13822 | tp->static_trace_marker_id, marker.str_id); |
0fb4aa4b | 13823 | |
d9b3f62e PA |
13824 | xfree (tp->static_trace_marker_id); |
13825 | tp->static_trace_marker_id = xstrdup (marker.str_id); | |
0fb4aa4b PA |
13826 | release_static_tracepoint_marker (&marker); |
13827 | ||
13828 | return sal; | |
13829 | } | |
13830 | ||
13831 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13832 | by string ID. */ | |
13833 | if (!sal.explicit_pc | |
13834 | && sal.line != 0 | |
13835 | && sal.symtab != NULL | |
d9b3f62e | 13836 | && tp->static_trace_marker_id != NULL) |
0fb4aa4b PA |
13837 | { |
13838 | VEC(static_tracepoint_marker_p) *markers; | |
13839 | ||
13840 | markers | |
d9b3f62e | 13841 | = target_static_tracepoint_markers_by_strid (tp->static_trace_marker_id); |
0fb4aa4b PA |
13842 | |
13843 | if (!VEC_empty(static_tracepoint_marker_p, markers)) | |
13844 | { | |
80e1d417 | 13845 | struct symtab_and_line sal2; |
0fb4aa4b | 13846 | struct symbol *sym; |
80e1d417 | 13847 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13848 | struct ui_out *uiout = current_uiout; |
0fb4aa4b | 13849 | |
80e1d417 | 13850 | tpmarker = VEC_index (static_tracepoint_marker_p, markers, 0); |
0fb4aa4b | 13851 | |
d9b3f62e | 13852 | xfree (tp->static_trace_marker_id); |
80e1d417 | 13853 | tp->static_trace_marker_id = xstrdup (tpmarker->str_id); |
0fb4aa4b PA |
13854 | |
13855 | warning (_("marker for static tracepoint %d (%s) not " | |
13856 | "found at previous line number"), | |
d9b3f62e | 13857 | b->number, tp->static_trace_marker_id); |
0fb4aa4b | 13858 | |
80e1d417 | 13859 | init_sal (&sal2); |
0fb4aa4b | 13860 | |
80e1d417 | 13861 | sal2.pc = tpmarker->address; |
0fb4aa4b | 13862 | |
80e1d417 AS |
13863 | sal2 = find_pc_line (tpmarker->address, 0); |
13864 | sym = find_pc_sect_function (tpmarker->address, NULL); | |
0fb4aa4b PA |
13865 | ui_out_text (uiout, "Now in "); |
13866 | if (sym) | |
13867 | { | |
13868 | ui_out_field_string (uiout, "func", | |
13869 | SYMBOL_PRINT_NAME (sym)); | |
13870 | ui_out_text (uiout, " at "); | |
13871 | } | |
80e1d417 | 13872 | ui_out_field_string (uiout, "file", sal2.symtab->filename); |
0fb4aa4b PA |
13873 | ui_out_text (uiout, ":"); |
13874 | ||
13875 | if (ui_out_is_mi_like_p (uiout)) | |
13876 | { | |
0b0865da | 13877 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 13878 | |
f35a17b5 | 13879 | ui_out_field_string (uiout, "fullname", fullname); |
0fb4aa4b PA |
13880 | } |
13881 | ||
80e1d417 | 13882 | ui_out_field_int (uiout, "line", sal2.line); |
0fb4aa4b PA |
13883 | ui_out_text (uiout, "\n"); |
13884 | ||
80e1d417 | 13885 | b->loc->line_number = sal2.line; |
0fb4aa4b | 13886 | |
f8eba3c6 | 13887 | xfree (b->loc->source_file); |
0fb4aa4b | 13888 | if (sym) |
80e1d417 | 13889 | b->loc->source_file = xstrdup (sal2.symtab->filename); |
0fb4aa4b | 13890 | else |
f8eba3c6 | 13891 | b->loc->source_file = NULL; |
0fb4aa4b PA |
13892 | |
13893 | xfree (b->addr_string); | |
13894 | b->addr_string = xstrprintf ("%s:%d", | |
80e1d417 | 13895 | sal2.symtab->filename, |
f8eba3c6 | 13896 | b->loc->line_number); |
0fb4aa4b PA |
13897 | |
13898 | /* Might be nice to check if function changed, and warn if | |
13899 | so. */ | |
13900 | ||
80e1d417 | 13901 | release_static_tracepoint_marker (tpmarker); |
0fb4aa4b PA |
13902 | } |
13903 | } | |
13904 | return sal; | |
13905 | } | |
13906 | ||
8d3788bd VP |
13907 | /* Returns 1 iff locations A and B are sufficiently same that |
13908 | we don't need to report breakpoint as changed. */ | |
13909 | ||
13910 | static int | |
13911 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
13912 | { | |
13913 | while (a && b) | |
13914 | { | |
13915 | if (a->address != b->address) | |
13916 | return 0; | |
13917 | ||
13918 | if (a->shlib_disabled != b->shlib_disabled) | |
13919 | return 0; | |
13920 | ||
13921 | if (a->enabled != b->enabled) | |
13922 | return 0; | |
13923 | ||
13924 | a = a->next; | |
13925 | b = b->next; | |
13926 | } | |
13927 | ||
13928 | if ((a == NULL) != (b == NULL)) | |
13929 | return 0; | |
13930 | ||
13931 | return 1; | |
13932 | } | |
13933 | ||
f1310107 TJB |
13934 | /* Create new breakpoint locations for B (a hardware or software breakpoint) |
13935 | based on SALS and SALS_END. If SALS_END.NELTS is not zero, then B is | |
13936 | a ranged breakpoint. */ | |
13937 | ||
0e30163f | 13938 | void |
0d381245 | 13939 | update_breakpoint_locations (struct breakpoint *b, |
f1310107 TJB |
13940 | struct symtabs_and_lines sals, |
13941 | struct symtabs_and_lines sals_end) | |
fe3f5fa8 VP |
13942 | { |
13943 | int i; | |
0d381245 VP |
13944 | struct bp_location *existing_locations = b->loc; |
13945 | ||
f8eba3c6 TT |
13946 | if (sals_end.nelts != 0 && (sals.nelts != 1 || sals_end.nelts != 1)) |
13947 | { | |
13948 | /* Ranged breakpoints have only one start location and one end | |
13949 | location. */ | |
13950 | b->enable_state = bp_disabled; | |
13951 | update_global_location_list (1); | |
13952 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " | |
13953 | "multiple locations found\n"), | |
13954 | b->number); | |
13955 | return; | |
13956 | } | |
f1310107 | 13957 | |
4a64f543 MS |
13958 | /* If there's no new locations, and all existing locations are |
13959 | pending, don't do anything. This optimizes the common case where | |
13960 | all locations are in the same shared library, that was unloaded. | |
13961 | We'd like to retain the location, so that when the library is | |
13962 | loaded again, we don't loose the enabled/disabled status of the | |
13963 | individual locations. */ | |
0d381245 | 13964 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) |
fe3f5fa8 VP |
13965 | return; |
13966 | ||
fe3f5fa8 VP |
13967 | b->loc = NULL; |
13968 | ||
0d381245 | 13969 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 13970 | { |
f8eba3c6 TT |
13971 | struct bp_location *new_loc; |
13972 | ||
13973 | switch_to_program_space_and_thread (sals.sals[i].pspace); | |
13974 | ||
13975 | new_loc = add_location_to_breakpoint (b, &(sals.sals[i])); | |
fe3f5fa8 | 13976 | |
0d381245 VP |
13977 | /* Reparse conditions, they might contain references to the |
13978 | old symtab. */ | |
13979 | if (b->cond_string != NULL) | |
13980 | { | |
f1310107 | 13981 | char *s; |
bfd189b1 | 13982 | volatile struct gdb_exception e; |
fe3f5fa8 | 13983 | |
0d381245 VP |
13984 | s = b->cond_string; |
13985 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
13986 | { | |
1bb9788d TT |
13987 | new_loc->cond = parse_exp_1 (&s, sals.sals[i].pc, |
13988 | block_for_pc (sals.sals[i].pc), | |
0d381245 VP |
13989 | 0); |
13990 | } | |
13991 | if (e.reason < 0) | |
13992 | { | |
3e43a32a MS |
13993 | warning (_("failed to reevaluate condition " |
13994 | "for breakpoint %d: %s"), | |
0d381245 VP |
13995 | b->number, e.message); |
13996 | new_loc->enabled = 0; | |
13997 | } | |
13998 | } | |
fe3f5fa8 | 13999 | |
f1310107 TJB |
14000 | if (sals_end.nelts) |
14001 | { | |
14002 | CORE_ADDR end = find_breakpoint_range_end (sals_end.sals[0]); | |
14003 | ||
14004 | new_loc->length = end - sals.sals[0].pc + 1; | |
14005 | } | |
0d381245 | 14006 | } |
fe3f5fa8 | 14007 | |
514f746b AR |
14008 | /* Update locations of permanent breakpoints. */ |
14009 | if (b->enable_state == bp_permanent) | |
14010 | make_breakpoint_permanent (b); | |
14011 | ||
4a64f543 MS |
14012 | /* If possible, carry over 'disable' status from existing |
14013 | breakpoints. */ | |
0d381245 VP |
14014 | { |
14015 | struct bp_location *e = existing_locations; | |
776592bf DE |
14016 | /* If there are multiple breakpoints with the same function name, |
14017 | e.g. for inline functions, comparing function names won't work. | |
14018 | Instead compare pc addresses; this is just a heuristic as things | |
14019 | may have moved, but in practice it gives the correct answer | |
14020 | often enough until a better solution is found. */ | |
14021 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
14022 | ||
0d381245 VP |
14023 | for (; e; e = e->next) |
14024 | { | |
14025 | if (!e->enabled && e->function_name) | |
14026 | { | |
14027 | struct bp_location *l = b->loc; | |
776592bf DE |
14028 | if (have_ambiguous_names) |
14029 | { | |
14030 | for (; l; l = l->next) | |
f1310107 | 14031 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
14032 | { |
14033 | l->enabled = 0; | |
14034 | break; | |
14035 | } | |
14036 | } | |
14037 | else | |
14038 | { | |
14039 | for (; l; l = l->next) | |
14040 | if (l->function_name | |
14041 | && strcmp (e->function_name, l->function_name) == 0) | |
14042 | { | |
14043 | l->enabled = 0; | |
14044 | break; | |
14045 | } | |
14046 | } | |
0d381245 VP |
14047 | } |
14048 | } | |
14049 | } | |
fe3f5fa8 | 14050 | |
8d3788bd VP |
14051 | if (!locations_are_equal (existing_locations, b->loc)) |
14052 | observer_notify_breakpoint_modified (b); | |
14053 | ||
b60e7edf | 14054 | update_global_location_list (1); |
fe3f5fa8 VP |
14055 | } |
14056 | ||
ef23e705 TJB |
14057 | /* Find the SaL locations corresponding to the given ADDR_STRING. |
14058 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ | |
14059 | ||
14060 | static struct symtabs_and_lines | |
14061 | addr_string_to_sals (struct breakpoint *b, char *addr_string, int *found) | |
14062 | { | |
14063 | char *s; | |
02d20e4a | 14064 | struct symtabs_and_lines sals = {0}; |
f8eba3c6 | 14065 | volatile struct gdb_exception e; |
ef23e705 | 14066 | |
983af33b | 14067 | gdb_assert (b->ops != NULL); |
ef23e705 | 14068 | s = addr_string; |
ef23e705 TJB |
14069 | |
14070 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
14071 | { | |
983af33b | 14072 | b->ops->decode_linespec (b, &s, &sals); |
ef23e705 TJB |
14073 | } |
14074 | if (e.reason < 0) | |
14075 | { | |
14076 | int not_found_and_ok = 0; | |
14077 | /* For pending breakpoints, it's expected that parsing will | |
14078 | fail until the right shared library is loaded. User has | |
14079 | already told to create pending breakpoints and don't need | |
14080 | extra messages. If breakpoint is in bp_shlib_disabled | |
14081 | state, then user already saw the message about that | |
14082 | breakpoint being disabled, and don't want to see more | |
14083 | errors. */ | |
58438ac1 | 14084 | if (e.error == NOT_FOUND_ERROR |
ef23e705 TJB |
14085 | && (b->condition_not_parsed |
14086 | || (b->loc && b->loc->shlib_disabled) | |
f8eba3c6 | 14087 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
14088 | || b->enable_state == bp_disabled)) |
14089 | not_found_and_ok = 1; | |
14090 | ||
14091 | if (!not_found_and_ok) | |
14092 | { | |
14093 | /* We surely don't want to warn about the same breakpoint | |
14094 | 10 times. One solution, implemented here, is disable | |
14095 | the breakpoint on error. Another solution would be to | |
14096 | have separate 'warning emitted' flag. Since this | |
14097 | happens only when a binary has changed, I don't know | |
14098 | which approach is better. */ | |
14099 | b->enable_state = bp_disabled; | |
14100 | throw_exception (e); | |
14101 | } | |
14102 | } | |
14103 | ||
58438ac1 | 14104 | if (e.reason == 0 || e.error != NOT_FOUND_ERROR) |
ef23e705 | 14105 | { |
f8eba3c6 | 14106 | int i; |
ef23e705 | 14107 | |
f8eba3c6 TT |
14108 | for (i = 0; i < sals.nelts; ++i) |
14109 | resolve_sal_pc (&sals.sals[i]); | |
ef23e705 TJB |
14110 | if (b->condition_not_parsed && s && s[0]) |
14111 | { | |
ed1d1739 KS |
14112 | char *cond_string, *extra_string; |
14113 | int thread, task; | |
ef23e705 TJB |
14114 | |
14115 | find_condition_and_thread (s, sals.sals[0].pc, | |
e7e0cddf SS |
14116 | &cond_string, &thread, &task, |
14117 | &extra_string); | |
ef23e705 TJB |
14118 | if (cond_string) |
14119 | b->cond_string = cond_string; | |
14120 | b->thread = thread; | |
14121 | b->task = task; | |
e7e0cddf SS |
14122 | if (extra_string) |
14123 | b->extra_string = extra_string; | |
ef23e705 TJB |
14124 | b->condition_not_parsed = 0; |
14125 | } | |
14126 | ||
983af33b | 14127 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
ef23e705 | 14128 | sals.sals[0] = update_static_tracepoint (b, sals.sals[0]); |
ef23e705 | 14129 | |
58438ac1 TT |
14130 | *found = 1; |
14131 | } | |
14132 | else | |
14133 | *found = 0; | |
ef23e705 TJB |
14134 | |
14135 | return sals; | |
14136 | } | |
14137 | ||
348d480f PA |
14138 | /* The default re_set method, for typical hardware or software |
14139 | breakpoints. Reevaluate the breakpoint and recreate its | |
14140 | locations. */ | |
14141 | ||
14142 | static void | |
28010a5d | 14143 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 TJB |
14144 | { |
14145 | int found; | |
f1310107 | 14146 | struct symtabs_and_lines sals, sals_end; |
ef23e705 | 14147 | struct symtabs_and_lines expanded = {0}; |
f1310107 | 14148 | struct symtabs_and_lines expanded_end = {0}; |
ef23e705 TJB |
14149 | |
14150 | sals = addr_string_to_sals (b, b->addr_string, &found); | |
14151 | if (found) | |
14152 | { | |
14153 | make_cleanup (xfree, sals.sals); | |
f8eba3c6 | 14154 | expanded = sals; |
ef23e705 TJB |
14155 | } |
14156 | ||
f1310107 TJB |
14157 | if (b->addr_string_range_end) |
14158 | { | |
14159 | sals_end = addr_string_to_sals (b, b->addr_string_range_end, &found); | |
14160 | if (found) | |
14161 | { | |
14162 | make_cleanup (xfree, sals_end.sals); | |
f8eba3c6 | 14163 | expanded_end = sals_end; |
f1310107 TJB |
14164 | } |
14165 | } | |
14166 | ||
14167 | update_breakpoint_locations (b, expanded, expanded_end); | |
28010a5d PA |
14168 | } |
14169 | ||
983af33b SDJ |
14170 | /* Default method for creating SALs from an address string. It basically |
14171 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
14172 | ||
14173 | static void | |
14174 | create_sals_from_address_default (char **arg, | |
14175 | struct linespec_result *canonical, | |
14176 | enum bptype type_wanted, | |
14177 | char *addr_start, char **copy_arg) | |
14178 | { | |
14179 | parse_breakpoint_sals (arg, canonical); | |
14180 | } | |
14181 | ||
14182 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
14183 | function for the `create_breakpoints_sal' method of | |
14184 | breakpoint_ops. */ | |
14185 | ||
14186 | static void | |
14187 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
14188 | struct linespec_result *canonical, | |
14189 | struct linespec_sals *lsal, | |
14190 | char *cond_string, | |
e7e0cddf | 14191 | char *extra_string, |
983af33b SDJ |
14192 | enum bptype type_wanted, |
14193 | enum bpdisp disposition, | |
14194 | int thread, | |
14195 | int task, int ignore_count, | |
14196 | const struct breakpoint_ops *ops, | |
14197 | int from_tty, int enabled, | |
44f238bb | 14198 | int internal, unsigned flags) |
983af33b SDJ |
14199 | { |
14200 | create_breakpoints_sal (gdbarch, canonical, cond_string, | |
e7e0cddf | 14201 | extra_string, |
983af33b SDJ |
14202 | type_wanted, disposition, |
14203 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 14204 | enabled, internal, flags); |
983af33b SDJ |
14205 | } |
14206 | ||
14207 | /* Decode the line represented by S by calling decode_line_full. This is the | |
14208 | default function for the `decode_linespec' method of breakpoint_ops. */ | |
14209 | ||
14210 | static void | |
14211 | decode_linespec_default (struct breakpoint *b, char **s, | |
14212 | struct symtabs_and_lines *sals) | |
14213 | { | |
14214 | struct linespec_result canonical; | |
14215 | ||
14216 | init_linespec_result (&canonical); | |
14217 | decode_line_full (s, DECODE_LINE_FUNFIRSTLINE, | |
14218 | (struct symtab *) NULL, 0, | |
14219 | &canonical, multiple_symbols_all, | |
14220 | b->filter); | |
14221 | ||
14222 | /* We should get 0 or 1 resulting SALs. */ | |
14223 | gdb_assert (VEC_length (linespec_sals, canonical.sals) < 2); | |
14224 | ||
14225 | if (VEC_length (linespec_sals, canonical.sals) > 0) | |
14226 | { | |
14227 | struct linespec_sals *lsal; | |
14228 | ||
14229 | lsal = VEC_index (linespec_sals, canonical.sals, 0); | |
14230 | *sals = lsal->sals; | |
14231 | /* Arrange it so the destructor does not free the | |
14232 | contents. */ | |
14233 | lsal->sals.sals = NULL; | |
14234 | } | |
14235 | ||
14236 | destroy_linespec_result (&canonical); | |
14237 | } | |
14238 | ||
28010a5d PA |
14239 | /* Prepare the global context for a re-set of breakpoint B. */ |
14240 | ||
14241 | static struct cleanup * | |
14242 | prepare_re_set_context (struct breakpoint *b) | |
14243 | { | |
14244 | struct cleanup *cleanups; | |
14245 | ||
14246 | input_radix = b->input_radix; | |
14247 | cleanups = save_current_space_and_thread (); | |
f8eba3c6 TT |
14248 | if (b->pspace != NULL) |
14249 | switch_to_program_space_and_thread (b->pspace); | |
28010a5d PA |
14250 | set_language (b->language); |
14251 | ||
14252 | return cleanups; | |
ef23e705 TJB |
14253 | } |
14254 | ||
c906108c SS |
14255 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
14256 | The value we return ends up being the return value from catch_errors. | |
14257 | Unused in this case. */ | |
14258 | ||
14259 | static int | |
4efb68b1 | 14260 | breakpoint_re_set_one (void *bint) |
c906108c | 14261 | { |
4a64f543 | 14262 | /* Get past catch_errs. */ |
53a5351d | 14263 | struct breakpoint *b = (struct breakpoint *) bint; |
348d480f | 14264 | struct cleanup *cleanups; |
c906108c | 14265 | |
348d480f PA |
14266 | cleanups = prepare_re_set_context (b); |
14267 | b->ops->re_set (b); | |
14268 | do_cleanups (cleanups); | |
c906108c SS |
14269 | return 0; |
14270 | } | |
14271 | ||
69de3c6a | 14272 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 14273 | void |
69de3c6a | 14274 | breakpoint_re_set (void) |
c906108c | 14275 | { |
35df4500 | 14276 | struct breakpoint *b, *b_tmp; |
c906108c SS |
14277 | enum language save_language; |
14278 | int save_input_radix; | |
6c95b8df | 14279 | struct cleanup *old_chain; |
c5aa993b | 14280 | |
c906108c SS |
14281 | save_language = current_language->la_language; |
14282 | save_input_radix = input_radix; | |
6c95b8df PA |
14283 | old_chain = save_current_program_space (); |
14284 | ||
35df4500 | 14285 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 14286 | { |
4a64f543 | 14287 | /* Format possible error msg. */ |
fe3f5fa8 | 14288 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
14289 | b->number); |
14290 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 14291 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 14292 | do_cleanups (cleanups); |
c5aa993b | 14293 | } |
c906108c SS |
14294 | set_language (save_language); |
14295 | input_radix = save_input_radix; | |
e62c965a | 14296 | |
0756c555 | 14297 | jit_breakpoint_re_set (); |
4efc6507 | 14298 | |
6c95b8df PA |
14299 | do_cleanups (old_chain); |
14300 | ||
af02033e PP |
14301 | create_overlay_event_breakpoint (); |
14302 | create_longjmp_master_breakpoint (); | |
14303 | create_std_terminate_master_breakpoint (); | |
186c406b | 14304 | create_exception_master_breakpoint (); |
c906108c SS |
14305 | } |
14306 | \f | |
c906108c SS |
14307 | /* Reset the thread number of this breakpoint: |
14308 | ||
14309 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 14310 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 14311 | void |
fba45db2 | 14312 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
14313 | { |
14314 | if (b->thread != -1) | |
14315 | { | |
39f77062 KB |
14316 | if (in_thread_list (inferior_ptid)) |
14317 | b->thread = pid_to_thread_id (inferior_ptid); | |
6c95b8df PA |
14318 | |
14319 | /* We're being called after following a fork. The new fork is | |
14320 | selected as current, and unless this was a vfork will have a | |
14321 | different program space from the original thread. Reset that | |
14322 | as well. */ | |
14323 | b->loc->pspace = current_program_space; | |
c906108c SS |
14324 | } |
14325 | } | |
14326 | ||
03ac34d5 MS |
14327 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14328 | If from_tty is nonzero, it prints a message to that effect, | |
14329 | which ends with a period (no newline). */ | |
14330 | ||
c906108c | 14331 | void |
fba45db2 | 14332 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 14333 | { |
52f0bd74 | 14334 | struct breakpoint *b; |
c906108c SS |
14335 | |
14336 | if (count < 0) | |
14337 | count = 0; | |
14338 | ||
14339 | ALL_BREAKPOINTS (b) | |
14340 | if (b->number == bptnum) | |
c5aa993b | 14341 | { |
d77f58be SS |
14342 | if (is_tracepoint (b)) |
14343 | { | |
14344 | if (from_tty && count != 0) | |
14345 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
14346 | bptnum); | |
14347 | return; | |
14348 | } | |
14349 | ||
c5aa993b | 14350 | b->ignore_count = count; |
221ea385 KS |
14351 | if (from_tty) |
14352 | { | |
14353 | if (count == 0) | |
3e43a32a MS |
14354 | printf_filtered (_("Will stop next time " |
14355 | "breakpoint %d is reached."), | |
221ea385 KS |
14356 | bptnum); |
14357 | else if (count == 1) | |
a3f17187 | 14358 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
14359 | bptnum); |
14360 | else | |
3e43a32a MS |
14361 | printf_filtered (_("Will ignore next %d " |
14362 | "crossings of breakpoint %d."), | |
221ea385 KS |
14363 | count, bptnum); |
14364 | } | |
ef37bb07 | 14365 | annotate_breakpoints_changed (); |
8d3788bd | 14366 | observer_notify_breakpoint_modified (b); |
c5aa993b JM |
14367 | return; |
14368 | } | |
c906108c | 14369 | |
8a3fe4f8 | 14370 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
14371 | } |
14372 | ||
c906108c SS |
14373 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
14374 | ||
14375 | static void | |
fba45db2 | 14376 | ignore_command (char *args, int from_tty) |
c906108c SS |
14377 | { |
14378 | char *p = args; | |
52f0bd74 | 14379 | int num; |
c906108c SS |
14380 | |
14381 | if (p == 0) | |
e2e0b3e5 | 14382 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 14383 | |
c906108c | 14384 | num = get_number (&p); |
5c44784c | 14385 | if (num == 0) |
8a3fe4f8 | 14386 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 14387 | if (*p == 0) |
8a3fe4f8 | 14388 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
14389 | |
14390 | set_ignore_count (num, | |
14391 | longest_to_int (value_as_long (parse_and_eval (p))), | |
14392 | from_tty); | |
221ea385 KS |
14393 | if (from_tty) |
14394 | printf_filtered ("\n"); | |
c906108c SS |
14395 | } |
14396 | \f | |
14397 | /* Call FUNCTION on each of the breakpoints | |
14398 | whose numbers are given in ARGS. */ | |
14399 | ||
14400 | static void | |
95a42b64 TT |
14401 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *, |
14402 | void *), | |
14403 | void *data) | |
c906108c | 14404 | { |
52f0bd74 AC |
14405 | int num; |
14406 | struct breakpoint *b, *tmp; | |
11cf8741 | 14407 | int match; |
197f0a60 | 14408 | struct get_number_or_range_state state; |
c906108c | 14409 | |
197f0a60 | 14410 | if (args == 0) |
e2e0b3e5 | 14411 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c | 14412 | |
197f0a60 TT |
14413 | init_number_or_range (&state, args); |
14414 | ||
14415 | while (!state.finished) | |
c906108c | 14416 | { |
197f0a60 TT |
14417 | char *p = state.string; |
14418 | ||
11cf8741 | 14419 | match = 0; |
c5aa993b | 14420 | |
197f0a60 | 14421 | num = get_number_or_range (&state); |
5c44784c | 14422 | if (num == 0) |
c5aa993b | 14423 | { |
8a3fe4f8 | 14424 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
14425 | } |
14426 | else | |
14427 | { | |
14428 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
14429 | if (b->number == num) | |
14430 | { | |
11cf8741 | 14431 | match = 1; |
cdac0397 | 14432 | function (b, data); |
11cf8741 | 14433 | break; |
5c44784c | 14434 | } |
11cf8741 | 14435 | if (match == 0) |
a3f17187 | 14436 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 14437 | } |
c906108c SS |
14438 | } |
14439 | } | |
14440 | ||
0d381245 VP |
14441 | static struct bp_location * |
14442 | find_location_by_number (char *number) | |
14443 | { | |
14444 | char *dot = strchr (number, '.'); | |
14445 | char *p1; | |
14446 | int bp_num; | |
14447 | int loc_num; | |
14448 | struct breakpoint *b; | |
14449 | struct bp_location *loc; | |
14450 | ||
14451 | *dot = '\0'; | |
14452 | ||
14453 | p1 = number; | |
197f0a60 | 14454 | bp_num = get_number (&p1); |
0d381245 VP |
14455 | if (bp_num == 0) |
14456 | error (_("Bad breakpoint number '%s'"), number); | |
14457 | ||
14458 | ALL_BREAKPOINTS (b) | |
14459 | if (b->number == bp_num) | |
14460 | { | |
14461 | break; | |
14462 | } | |
14463 | ||
14464 | if (!b || b->number != bp_num) | |
14465 | error (_("Bad breakpoint number '%s'"), number); | |
14466 | ||
14467 | p1 = dot+1; | |
197f0a60 | 14468 | loc_num = get_number (&p1); |
0d381245 VP |
14469 | if (loc_num == 0) |
14470 | error (_("Bad breakpoint location number '%s'"), number); | |
14471 | ||
14472 | --loc_num; | |
14473 | loc = b->loc; | |
14474 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
14475 | ; | |
14476 | if (!loc) | |
14477 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
14478 | ||
14479 | return loc; | |
14480 | } | |
14481 | ||
14482 | ||
1900040c MS |
14483 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14484 | If from_tty is nonzero, it prints a message to that effect, | |
14485 | which ends with a period (no newline). */ | |
14486 | ||
c906108c | 14487 | void |
fba45db2 | 14488 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14489 | { |
14490 | /* Never disable a watchpoint scope breakpoint; we want to | |
14491 | hit them when we leave scope so we can delete both the | |
14492 | watchpoint and its scope breakpoint at that time. */ | |
14493 | if (bpt->type == bp_watchpoint_scope) | |
14494 | return; | |
14495 | ||
c2c6d25f | 14496 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 14497 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
14498 | return; |
14499 | ||
b5de0fa7 | 14500 | bpt->enable_state = bp_disabled; |
c906108c | 14501 | |
b775012e LM |
14502 | /* Mark breakpoint locations modified. */ |
14503 | mark_breakpoint_modified (bpt); | |
14504 | ||
d248b706 KY |
14505 | if (target_supports_enable_disable_tracepoint () |
14506 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14507 | { | |
14508 | struct bp_location *location; | |
14509 | ||
14510 | for (location = bpt->loc; location; location = location->next) | |
14511 | target_disable_tracepoint (location); | |
14512 | } | |
14513 | ||
b60e7edf | 14514 | update_global_location_list (0); |
c906108c | 14515 | |
8d3788bd | 14516 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14517 | } |
14518 | ||
51be5b68 PA |
14519 | /* A callback for iterate_over_related_breakpoints. */ |
14520 | ||
14521 | static void | |
14522 | do_disable_breakpoint (struct breakpoint *b, void *ignore) | |
14523 | { | |
14524 | disable_breakpoint (b); | |
14525 | } | |
14526 | ||
95a42b64 TT |
14527 | /* A callback for map_breakpoint_numbers that calls |
14528 | disable_breakpoint. */ | |
14529 | ||
14530 | static void | |
14531 | do_map_disable_breakpoint (struct breakpoint *b, void *ignore) | |
14532 | { | |
51be5b68 | 14533 | iterate_over_related_breakpoints (b, do_disable_breakpoint, NULL); |
95a42b64 TT |
14534 | } |
14535 | ||
c906108c | 14536 | static void |
fba45db2 | 14537 | disable_command (char *args, int from_tty) |
c906108c | 14538 | { |
c906108c | 14539 | if (args == 0) |
46c6471b PA |
14540 | { |
14541 | struct breakpoint *bpt; | |
14542 | ||
14543 | ALL_BREAKPOINTS (bpt) | |
14544 | if (user_breakpoint_p (bpt)) | |
14545 | disable_breakpoint (bpt); | |
14546 | } | |
0d381245 VP |
14547 | else if (strchr (args, '.')) |
14548 | { | |
14549 | struct bp_location *loc = find_location_by_number (args); | |
14550 | if (loc) | |
d248b706 | 14551 | { |
b775012e LM |
14552 | if (loc->enabled) |
14553 | { | |
14554 | loc->enabled = 0; | |
14555 | mark_breakpoint_location_modified (loc); | |
14556 | } | |
d248b706 KY |
14557 | if (target_supports_enable_disable_tracepoint () |
14558 | && current_trace_status ()->running && loc->owner | |
14559 | && is_tracepoint (loc->owner)) | |
14560 | target_disable_tracepoint (loc); | |
14561 | } | |
b60e7edf | 14562 | update_global_location_list (0); |
0d381245 | 14563 | } |
c906108c | 14564 | else |
95a42b64 | 14565 | map_breakpoint_numbers (args, do_map_disable_breakpoint, NULL); |
c906108c SS |
14566 | } |
14567 | ||
14568 | static void | |
816338b5 SS |
14569 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14570 | int count) | |
c906108c | 14571 | { |
afe38095 | 14572 | int target_resources_ok; |
c906108c SS |
14573 | |
14574 | if (bpt->type == bp_hardware_breakpoint) | |
14575 | { | |
14576 | int i; | |
c5aa993b | 14577 | i = hw_breakpoint_used_count (); |
53a5351d | 14578 | target_resources_ok = |
d92524f1 | 14579 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14580 | i + 1, 0); |
c906108c | 14581 | if (target_resources_ok == 0) |
8a3fe4f8 | 14582 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14583 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14584 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14585 | } |
14586 | ||
cc60f2e3 | 14587 | if (is_watchpoint (bpt)) |
c906108c | 14588 | { |
d07205c2 JK |
14589 | /* Initialize it just to avoid a GCC false warning. */ |
14590 | enum enable_state orig_enable_state = 0; | |
bfd189b1 | 14591 | volatile struct gdb_exception e; |
dde02812 ES |
14592 | |
14593 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 14594 | { |
3a5c3e22 PA |
14595 | struct watchpoint *w = (struct watchpoint *) bpt; |
14596 | ||
1e718ff1 TJB |
14597 | orig_enable_state = bpt->enable_state; |
14598 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14599 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14600 | } |
dde02812 | 14601 | if (e.reason < 0) |
c5aa993b | 14602 | { |
1e718ff1 | 14603 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14604 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14605 | bpt->number); | |
14606 | return; | |
c5aa993b | 14607 | } |
c906108c | 14608 | } |
0101ce28 | 14609 | |
b4c291bb KH |
14610 | if (bpt->enable_state != bp_permanent) |
14611 | bpt->enable_state = bp_enabled; | |
d248b706 | 14612 | |
b775012e LM |
14613 | bpt->enable_state = bp_enabled; |
14614 | ||
14615 | /* Mark breakpoint locations modified. */ | |
14616 | mark_breakpoint_modified (bpt); | |
14617 | ||
d248b706 KY |
14618 | if (target_supports_enable_disable_tracepoint () |
14619 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14620 | { | |
14621 | struct bp_location *location; | |
14622 | ||
14623 | for (location = bpt->loc; location; location = location->next) | |
14624 | target_enable_tracepoint (location); | |
14625 | } | |
14626 | ||
b4c291bb | 14627 | bpt->disposition = disposition; |
816338b5 | 14628 | bpt->enable_count = count; |
b60e7edf | 14629 | update_global_location_list (1); |
ef37bb07 | 14630 | annotate_breakpoints_changed (); |
b4c291bb | 14631 | |
8d3788bd | 14632 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14633 | } |
14634 | ||
fe3f5fa8 | 14635 | |
c906108c | 14636 | void |
fba45db2 | 14637 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14638 | { |
816338b5 | 14639 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14640 | } |
14641 | ||
14642 | static void | |
14643 | do_enable_breakpoint (struct breakpoint *bpt, void *arg) | |
14644 | { | |
14645 | enable_breakpoint (bpt); | |
c906108c SS |
14646 | } |
14647 | ||
95a42b64 TT |
14648 | /* A callback for map_breakpoint_numbers that calls |
14649 | enable_breakpoint. */ | |
14650 | ||
14651 | static void | |
14652 | do_map_enable_breakpoint (struct breakpoint *b, void *ignore) | |
14653 | { | |
51be5b68 | 14654 | iterate_over_related_breakpoints (b, do_enable_breakpoint, NULL); |
95a42b64 TT |
14655 | } |
14656 | ||
c906108c SS |
14657 | /* The enable command enables the specified breakpoints (or all defined |
14658 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 14659 | in stopping the inferior. */ |
c906108c | 14660 | |
c906108c | 14661 | static void |
fba45db2 | 14662 | enable_command (char *args, int from_tty) |
c906108c | 14663 | { |
c906108c | 14664 | if (args == 0) |
46c6471b PA |
14665 | { |
14666 | struct breakpoint *bpt; | |
14667 | ||
14668 | ALL_BREAKPOINTS (bpt) | |
14669 | if (user_breakpoint_p (bpt)) | |
14670 | enable_breakpoint (bpt); | |
14671 | } | |
0d381245 VP |
14672 | else if (strchr (args, '.')) |
14673 | { | |
14674 | struct bp_location *loc = find_location_by_number (args); | |
14675 | if (loc) | |
d248b706 | 14676 | { |
b775012e LM |
14677 | if (!loc->enabled) |
14678 | { | |
14679 | loc->enabled = 1; | |
14680 | mark_breakpoint_location_modified (loc); | |
14681 | } | |
d248b706 KY |
14682 | if (target_supports_enable_disable_tracepoint () |
14683 | && current_trace_status ()->running && loc->owner | |
14684 | && is_tracepoint (loc->owner)) | |
14685 | target_enable_tracepoint (loc); | |
14686 | } | |
b60e7edf | 14687 | update_global_location_list (1); |
0d381245 | 14688 | } |
c906108c | 14689 | else |
95a42b64 | 14690 | map_breakpoint_numbers (args, do_map_enable_breakpoint, NULL); |
c906108c SS |
14691 | } |
14692 | ||
816338b5 SS |
14693 | /* This struct packages up disposition data for application to multiple |
14694 | breakpoints. */ | |
14695 | ||
14696 | struct disp_data | |
14697 | { | |
14698 | enum bpdisp disp; | |
14699 | int count; | |
14700 | }; | |
14701 | ||
c906108c | 14702 | static void |
51be5b68 PA |
14703 | do_enable_breakpoint_disp (struct breakpoint *bpt, void *arg) |
14704 | { | |
816338b5 | 14705 | struct disp_data disp_data = *(struct disp_data *) arg; |
51be5b68 | 14706 | |
816338b5 | 14707 | enable_breakpoint_disp (bpt, disp_data.disp, disp_data.count); |
51be5b68 PA |
14708 | } |
14709 | ||
14710 | static void | |
14711 | do_map_enable_once_breakpoint (struct breakpoint *bpt, void *ignore) | |
c906108c | 14712 | { |
816338b5 | 14713 | struct disp_data disp = { disp_disable, 1 }; |
51be5b68 PA |
14714 | |
14715 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
14716 | } |
14717 | ||
c906108c | 14718 | static void |
fba45db2 | 14719 | enable_once_command (char *args, int from_tty) |
c906108c | 14720 | { |
51be5b68 | 14721 | map_breakpoint_numbers (args, do_map_enable_once_breakpoint, NULL); |
c906108c SS |
14722 | } |
14723 | ||
816338b5 SS |
14724 | static void |
14725 | do_map_enable_count_breakpoint (struct breakpoint *bpt, void *countptr) | |
14726 | { | |
14727 | struct disp_data disp = { disp_disable, *(int *) countptr }; | |
14728 | ||
14729 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
14730 | } | |
14731 | ||
14732 | static void | |
14733 | enable_count_command (char *args, int from_tty) | |
14734 | { | |
14735 | int count = get_number (&args); | |
14736 | ||
14737 | map_breakpoint_numbers (args, do_map_enable_count_breakpoint, &count); | |
14738 | } | |
14739 | ||
c906108c | 14740 | static void |
51be5b68 | 14741 | do_map_enable_delete_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 14742 | { |
816338b5 | 14743 | struct disp_data disp = { disp_del, 1 }; |
51be5b68 PA |
14744 | |
14745 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
14746 | } |
14747 | ||
c906108c | 14748 | static void |
fba45db2 | 14749 | enable_delete_command (char *args, int from_tty) |
c906108c | 14750 | { |
51be5b68 | 14751 | map_breakpoint_numbers (args, do_map_enable_delete_breakpoint, NULL); |
c906108c SS |
14752 | } |
14753 | \f | |
fa8d40ab JJ |
14754 | static void |
14755 | set_breakpoint_cmd (char *args, int from_tty) | |
14756 | { | |
14757 | } | |
14758 | ||
14759 | static void | |
14760 | show_breakpoint_cmd (char *args, int from_tty) | |
14761 | { | |
14762 | } | |
14763 | ||
1f3b5d1b PP |
14764 | /* Invalidate last known value of any hardware watchpoint if |
14765 | the memory which that value represents has been written to by | |
14766 | GDB itself. */ | |
14767 | ||
14768 | static void | |
8de0566d YQ |
14769 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
14770 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
14771 | const bfd_byte *data) |
14772 | { | |
14773 | struct breakpoint *bp; | |
14774 | ||
14775 | ALL_BREAKPOINTS (bp) | |
14776 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 14777 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14778 | { |
3a5c3e22 | 14779 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14780 | |
3a5c3e22 PA |
14781 | if (wp->val_valid && wp->val) |
14782 | { | |
14783 | struct bp_location *loc; | |
14784 | ||
14785 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
14786 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
14787 | && loc->address + loc->length > addr | |
14788 | && addr + len > loc->address) | |
14789 | { | |
14790 | value_free (wp->val); | |
14791 | wp->val = NULL; | |
14792 | wp->val_valid = 0; | |
14793 | } | |
14794 | } | |
1f3b5d1b PP |
14795 | } |
14796 | } | |
14797 | ||
8181d85f DJ |
14798 | /* Create and insert a raw software breakpoint at PC. Return an |
14799 | identifier, which should be used to remove the breakpoint later. | |
14800 | In general, places which call this should be using something on the | |
14801 | breakpoint chain instead; this function should be eliminated | |
14802 | someday. */ | |
14803 | ||
14804 | void * | |
6c95b8df PA |
14805 | deprecated_insert_raw_breakpoint (struct gdbarch *gdbarch, |
14806 | struct address_space *aspace, CORE_ADDR pc) | |
8181d85f DJ |
14807 | { |
14808 | struct bp_target_info *bp_tgt; | |
14809 | ||
6c95b8df | 14810 | bp_tgt = XZALLOC (struct bp_target_info); |
8181d85f | 14811 | |
6c95b8df | 14812 | bp_tgt->placed_address_space = aspace; |
8181d85f | 14813 | bp_tgt->placed_address = pc; |
6c95b8df | 14814 | |
a6d9a66e | 14815 | if (target_insert_breakpoint (gdbarch, bp_tgt) != 0) |
8181d85f DJ |
14816 | { |
14817 | /* Could not insert the breakpoint. */ | |
14818 | xfree (bp_tgt); | |
14819 | return NULL; | |
14820 | } | |
14821 | ||
14822 | return bp_tgt; | |
14823 | } | |
14824 | ||
4a64f543 MS |
14825 | /* Remove a breakpoint BP inserted by |
14826 | deprecated_insert_raw_breakpoint. */ | |
8181d85f DJ |
14827 | |
14828 | int | |
a6d9a66e | 14829 | deprecated_remove_raw_breakpoint (struct gdbarch *gdbarch, void *bp) |
8181d85f DJ |
14830 | { |
14831 | struct bp_target_info *bp_tgt = bp; | |
14832 | int ret; | |
14833 | ||
a6d9a66e | 14834 | ret = target_remove_breakpoint (gdbarch, bp_tgt); |
8181d85f DJ |
14835 | xfree (bp_tgt); |
14836 | ||
14837 | return ret; | |
14838 | } | |
14839 | ||
4a64f543 MS |
14840 | /* One (or perhaps two) breakpoints used for software single |
14841 | stepping. */ | |
8181d85f DJ |
14842 | |
14843 | static void *single_step_breakpoints[2]; | |
a6d9a66e | 14844 | static struct gdbarch *single_step_gdbarch[2]; |
8181d85f DJ |
14845 | |
14846 | /* Create and insert a breakpoint for software single step. */ | |
14847 | ||
14848 | void | |
6c95b8df | 14849 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
4a64f543 MS |
14850 | struct address_space *aspace, |
14851 | CORE_ADDR next_pc) | |
8181d85f DJ |
14852 | { |
14853 | void **bpt_p; | |
14854 | ||
14855 | if (single_step_breakpoints[0] == NULL) | |
a6d9a66e UW |
14856 | { |
14857 | bpt_p = &single_step_breakpoints[0]; | |
14858 | single_step_gdbarch[0] = gdbarch; | |
14859 | } | |
8181d85f DJ |
14860 | else |
14861 | { | |
14862 | gdb_assert (single_step_breakpoints[1] == NULL); | |
14863 | bpt_p = &single_step_breakpoints[1]; | |
a6d9a66e | 14864 | single_step_gdbarch[1] = gdbarch; |
8181d85f DJ |
14865 | } |
14866 | ||
4a64f543 MS |
14867 | /* NOTE drow/2006-04-11: A future improvement to this function would |
14868 | be to only create the breakpoints once, and actually put them on | |
14869 | the breakpoint chain. That would let us use set_raw_breakpoint. | |
14870 | We could adjust the addresses each time they were needed. Doing | |
14871 | this requires corresponding changes elsewhere where single step | |
14872 | breakpoints are handled, however. So, for now, we use this. */ | |
8181d85f | 14873 | |
6c95b8df | 14874 | *bpt_p = deprecated_insert_raw_breakpoint (gdbarch, aspace, next_pc); |
8181d85f | 14875 | if (*bpt_p == NULL) |
5af949e3 UW |
14876 | error (_("Could not insert single-step breakpoint at %s"), |
14877 | paddress (gdbarch, next_pc)); | |
8181d85f DJ |
14878 | } |
14879 | ||
f02253f1 HZ |
14880 | /* Check if the breakpoints used for software single stepping |
14881 | were inserted or not. */ | |
14882 | ||
14883 | int | |
14884 | single_step_breakpoints_inserted (void) | |
14885 | { | |
14886 | return (single_step_breakpoints[0] != NULL | |
14887 | || single_step_breakpoints[1] != NULL); | |
14888 | } | |
14889 | ||
8181d85f DJ |
14890 | /* Remove and delete any breakpoints used for software single step. */ |
14891 | ||
14892 | void | |
14893 | remove_single_step_breakpoints (void) | |
14894 | { | |
14895 | gdb_assert (single_step_breakpoints[0] != NULL); | |
14896 | ||
14897 | /* See insert_single_step_breakpoint for more about this deprecated | |
14898 | call. */ | |
a6d9a66e UW |
14899 | deprecated_remove_raw_breakpoint (single_step_gdbarch[0], |
14900 | single_step_breakpoints[0]); | |
14901 | single_step_gdbarch[0] = NULL; | |
8181d85f DJ |
14902 | single_step_breakpoints[0] = NULL; |
14903 | ||
14904 | if (single_step_breakpoints[1] != NULL) | |
14905 | { | |
a6d9a66e UW |
14906 | deprecated_remove_raw_breakpoint (single_step_gdbarch[1], |
14907 | single_step_breakpoints[1]); | |
14908 | single_step_gdbarch[1] = NULL; | |
8181d85f DJ |
14909 | single_step_breakpoints[1] = NULL; |
14910 | } | |
14911 | } | |
14912 | ||
d03285ec UW |
14913 | /* Delete software single step breakpoints without removing them from |
14914 | the inferior. This is intended to be used if the inferior's address | |
14915 | space where they were inserted is already gone, e.g. after exit or | |
14916 | exec. */ | |
14917 | ||
14918 | void | |
14919 | cancel_single_step_breakpoints (void) | |
14920 | { | |
14921 | int i; | |
14922 | ||
14923 | for (i = 0; i < 2; i++) | |
14924 | if (single_step_breakpoints[i]) | |
14925 | { | |
14926 | xfree (single_step_breakpoints[i]); | |
14927 | single_step_breakpoints[i] = NULL; | |
14928 | single_step_gdbarch[i] = NULL; | |
14929 | } | |
14930 | } | |
14931 | ||
14932 | /* Detach software single-step breakpoints from INFERIOR_PTID without | |
14933 | removing them. */ | |
14934 | ||
14935 | static void | |
14936 | detach_single_step_breakpoints (void) | |
14937 | { | |
14938 | int i; | |
14939 | ||
14940 | for (i = 0; i < 2; i++) | |
14941 | if (single_step_breakpoints[i]) | |
14942 | target_remove_breakpoint (single_step_gdbarch[i], | |
14943 | single_step_breakpoints[i]); | |
14944 | } | |
14945 | ||
4a64f543 MS |
14946 | /* Check whether a software single-step breakpoint is inserted at |
14947 | PC. */ | |
1aafd4da UW |
14948 | |
14949 | static int | |
cc59ec59 MS |
14950 | single_step_breakpoint_inserted_here_p (struct address_space *aspace, |
14951 | CORE_ADDR pc) | |
1aafd4da UW |
14952 | { |
14953 | int i; | |
14954 | ||
14955 | for (i = 0; i < 2; i++) | |
14956 | { | |
14957 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
6c95b8df PA |
14958 | if (bp_tgt |
14959 | && breakpoint_address_match (bp_tgt->placed_address_space, | |
14960 | bp_tgt->placed_address, | |
14961 | aspace, pc)) | |
1aafd4da UW |
14962 | return 1; |
14963 | } | |
14964 | ||
14965 | return 0; | |
14966 | } | |
14967 | ||
a96d9b2e SDJ |
14968 | /* Returns 0 if 'bp' is NOT a syscall catchpoint, |
14969 | non-zero otherwise. */ | |
14970 | static int | |
14971 | is_syscall_catchpoint_enabled (struct breakpoint *bp) | |
14972 | { | |
14973 | if (syscall_catchpoint_p (bp) | |
14974 | && bp->enable_state != bp_disabled | |
14975 | && bp->enable_state != bp_call_disabled) | |
14976 | return 1; | |
14977 | else | |
14978 | return 0; | |
14979 | } | |
14980 | ||
14981 | int | |
14982 | catch_syscall_enabled (void) | |
14983 | { | |
fa3064dd YQ |
14984 | struct catch_syscall_inferior_data *inf_data |
14985 | = get_catch_syscall_inferior_data (current_inferior ()); | |
a96d9b2e | 14986 | |
fa3064dd | 14987 | return inf_data->total_syscalls_count != 0; |
a96d9b2e SDJ |
14988 | } |
14989 | ||
14990 | int | |
14991 | catching_syscall_number (int syscall_number) | |
14992 | { | |
14993 | struct breakpoint *bp; | |
14994 | ||
14995 | ALL_BREAKPOINTS (bp) | |
14996 | if (is_syscall_catchpoint_enabled (bp)) | |
14997 | { | |
be5c67c1 PA |
14998 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bp; |
14999 | ||
15000 | if (c->syscalls_to_be_caught) | |
a96d9b2e SDJ |
15001 | { |
15002 | int i, iter; | |
15003 | for (i = 0; | |
be5c67c1 | 15004 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
15005 | i++) |
15006 | if (syscall_number == iter) | |
15007 | return 1; | |
15008 | } | |
15009 | else | |
15010 | return 1; | |
15011 | } | |
15012 | ||
15013 | return 0; | |
15014 | } | |
15015 | ||
15016 | /* Complete syscall names. Used by "catch syscall". */ | |
49c4e619 | 15017 | static VEC (char_ptr) * |
a96d9b2e SDJ |
15018 | catch_syscall_completer (struct cmd_list_element *cmd, |
15019 | char *text, char *word) | |
15020 | { | |
15021 | const char **list = get_syscall_names (); | |
49c4e619 | 15022 | VEC (char_ptr) *retlist |
b45627a0 | 15023 | = (list == NULL) ? NULL : complete_on_enum (list, word, word); |
cc59ec59 | 15024 | |
c38eea1a MS |
15025 | xfree (list); |
15026 | return retlist; | |
a96d9b2e SDJ |
15027 | } |
15028 | ||
1042e4c0 SS |
15029 | /* Tracepoint-specific operations. */ |
15030 | ||
15031 | /* Set tracepoint count to NUM. */ | |
15032 | static void | |
15033 | set_tracepoint_count (int num) | |
15034 | { | |
15035 | tracepoint_count = num; | |
4fa62494 | 15036 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
15037 | } |
15038 | ||
70221824 | 15039 | static void |
1042e4c0 SS |
15040 | trace_command (char *arg, int from_tty) |
15041 | { | |
55aa24fb SDJ |
15042 | struct breakpoint_ops *ops; |
15043 | const char *arg_cp = arg; | |
15044 | ||
15045 | if (arg && probe_linespec_to_ops (&arg_cp)) | |
15046 | ops = &tracepoint_probe_breakpoint_ops; | |
15047 | else | |
15048 | ops = &tracepoint_breakpoint_ops; | |
15049 | ||
558a9d82 YQ |
15050 | create_breakpoint (get_current_arch (), |
15051 | arg, | |
15052 | NULL, 0, NULL, 1 /* parse arg */, | |
15053 | 0 /* tempflag */, | |
15054 | bp_tracepoint /* type_wanted */, | |
15055 | 0 /* Ignore count */, | |
15056 | pending_break_support, | |
15057 | ops, | |
15058 | from_tty, | |
15059 | 1 /* enabled */, | |
15060 | 0 /* internal */, 0); | |
1042e4c0 SS |
15061 | } |
15062 | ||
70221824 | 15063 | static void |
7a697b8d SS |
15064 | ftrace_command (char *arg, int from_tty) |
15065 | { | |
558a9d82 YQ |
15066 | create_breakpoint (get_current_arch (), |
15067 | arg, | |
15068 | NULL, 0, NULL, 1 /* parse arg */, | |
15069 | 0 /* tempflag */, | |
15070 | bp_fast_tracepoint /* type_wanted */, | |
15071 | 0 /* Ignore count */, | |
15072 | pending_break_support, | |
15073 | &tracepoint_breakpoint_ops, | |
15074 | from_tty, | |
15075 | 1 /* enabled */, | |
15076 | 0 /* internal */, 0); | |
0fb4aa4b PA |
15077 | } |
15078 | ||
15079 | /* strace command implementation. Creates a static tracepoint. */ | |
15080 | ||
70221824 | 15081 | static void |
0fb4aa4b PA |
15082 | strace_command (char *arg, int from_tty) |
15083 | { | |
983af33b SDJ |
15084 | struct breakpoint_ops *ops; |
15085 | ||
15086 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
15087 | or with a normal static tracepoint. */ | |
15088 | if (arg && strncmp (arg, "-m", 2) == 0 && isspace (arg[2])) | |
15089 | ops = &strace_marker_breakpoint_ops; | |
15090 | else | |
15091 | ops = &tracepoint_breakpoint_ops; | |
15092 | ||
558a9d82 YQ |
15093 | create_breakpoint (get_current_arch (), |
15094 | arg, | |
15095 | NULL, 0, NULL, 1 /* parse arg */, | |
15096 | 0 /* tempflag */, | |
15097 | bp_static_tracepoint /* type_wanted */, | |
15098 | 0 /* Ignore count */, | |
15099 | pending_break_support, | |
15100 | ops, | |
15101 | from_tty, | |
15102 | 1 /* enabled */, | |
15103 | 0 /* internal */, 0); | |
7a697b8d SS |
15104 | } |
15105 | ||
409873ef SS |
15106 | /* Set up a fake reader function that gets command lines from a linked |
15107 | list that was acquired during tracepoint uploading. */ | |
15108 | ||
15109 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 15110 | static int next_cmd; |
409873ef SS |
15111 | |
15112 | static char * | |
15113 | read_uploaded_action (void) | |
15114 | { | |
15115 | char *rslt; | |
15116 | ||
3149d8c1 | 15117 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 15118 | |
3149d8c1 | 15119 | next_cmd++; |
409873ef SS |
15120 | |
15121 | return rslt; | |
15122 | } | |
15123 | ||
00bf0b85 SS |
15124 | /* Given information about a tracepoint as recorded on a target (which |
15125 | can be either a live system or a trace file), attempt to create an | |
15126 | equivalent GDB tracepoint. This is not a reliable process, since | |
15127 | the target does not necessarily have all the information used when | |
15128 | the tracepoint was originally defined. */ | |
15129 | ||
d9b3f62e | 15130 | struct tracepoint * |
00bf0b85 | 15131 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 15132 | { |
409873ef | 15133 | char *addr_str, small_buf[100]; |
d9b3f62e | 15134 | struct tracepoint *tp; |
fd9b8c24 | 15135 | |
409873ef SS |
15136 | if (utp->at_string) |
15137 | addr_str = utp->at_string; | |
15138 | else | |
15139 | { | |
15140 | /* In the absence of a source location, fall back to raw | |
15141 | address. Since there is no way to confirm that the address | |
15142 | means the same thing as when the trace was started, warn the | |
15143 | user. */ | |
3e43a32a MS |
15144 | warning (_("Uploaded tracepoint %d has no " |
15145 | "source location, using raw address"), | |
409873ef | 15146 | utp->number); |
8c042590 | 15147 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
15148 | addr_str = small_buf; |
15149 | } | |
15150 | ||
15151 | /* There's not much we can do with a sequence of bytecodes. */ | |
15152 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
15153 | warning (_("Uploaded tracepoint %d condition " |
15154 | "has no source form, ignoring it"), | |
409873ef | 15155 | utp->number); |
d5551862 | 15156 | |
8cdf0e15 | 15157 | if (!create_breakpoint (get_current_arch (), |
409873ef | 15158 | addr_str, |
e7e0cddf SS |
15159 | utp->cond_string, -1, NULL, |
15160 | 0 /* parse cond/thread */, | |
8cdf0e15 | 15161 | 0 /* tempflag */, |
0fb4aa4b | 15162 | utp->type /* type_wanted */, |
8cdf0e15 VP |
15163 | 0 /* Ignore count */, |
15164 | pending_break_support, | |
348d480f | 15165 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 15166 | 0 /* from_tty */, |
84f4c1fe | 15167 | utp->enabled /* enabled */, |
44f238bb PA |
15168 | 0 /* internal */, |
15169 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
fd9b8c24 PA |
15170 | return NULL; |
15171 | ||
409873ef | 15172 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
15173 | tp = get_tracepoint (tracepoint_count); |
15174 | gdb_assert (tp != NULL); | |
d5551862 | 15175 | |
00bf0b85 SS |
15176 | if (utp->pass > 0) |
15177 | { | |
8c042590 PM |
15178 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
15179 | tp->base.number); | |
00bf0b85 | 15180 | |
409873ef | 15181 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
15182 | } |
15183 | ||
409873ef SS |
15184 | /* If we have uploaded versions of the original commands, set up a |
15185 | special-purpose "reader" function and call the usual command line | |
15186 | reader, then pass the result to the breakpoint command-setting | |
15187 | function. */ | |
3149d8c1 | 15188 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 15189 | { |
409873ef | 15190 | struct command_line *cmd_list; |
00bf0b85 | 15191 | |
409873ef | 15192 | this_utp = utp; |
3149d8c1 | 15193 | next_cmd = 0; |
d5551862 | 15194 | |
409873ef SS |
15195 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
15196 | ||
d9b3f62e | 15197 | breakpoint_set_commands (&tp->base, cmd_list); |
00bf0b85 | 15198 | } |
3149d8c1 SS |
15199 | else if (!VEC_empty (char_ptr, utp->actions) |
15200 | || !VEC_empty (char_ptr, utp->step_actions)) | |
3e43a32a MS |
15201 | warning (_("Uploaded tracepoint %d actions " |
15202 | "have no source form, ignoring them"), | |
409873ef | 15203 | utp->number); |
00bf0b85 | 15204 | |
f196051f SS |
15205 | /* Copy any status information that might be available. */ |
15206 | tp->base.hit_count = utp->hit_count; | |
15207 | tp->traceframe_usage = utp->traceframe_usage; | |
15208 | ||
00bf0b85 | 15209 | return tp; |
d9b3f62e | 15210 | } |
00bf0b85 | 15211 | |
1042e4c0 SS |
15212 | /* Print information on tracepoint number TPNUM_EXP, or all if |
15213 | omitted. */ | |
15214 | ||
15215 | static void | |
e5a67952 | 15216 | tracepoints_info (char *args, int from_tty) |
1042e4c0 | 15217 | { |
79a45e25 | 15218 | struct ui_out *uiout = current_uiout; |
e5a67952 | 15219 | int num_printed; |
1042e4c0 | 15220 | |
e5a67952 | 15221 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
15222 | |
15223 | if (num_printed == 0) | |
1042e4c0 | 15224 | { |
e5a67952 | 15225 | if (args == NULL || *args == '\0') |
d77f58be SS |
15226 | ui_out_message (uiout, 0, "No tracepoints.\n"); |
15227 | else | |
e5a67952 | 15228 | ui_out_message (uiout, 0, "No tracepoint matching '%s'.\n", args); |
1042e4c0 | 15229 | } |
ad443146 SS |
15230 | |
15231 | default_collect_info (); | |
1042e4c0 SS |
15232 | } |
15233 | ||
4a64f543 | 15234 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
15235 | Not supported by all targets. */ |
15236 | static void | |
15237 | enable_trace_command (char *args, int from_tty) | |
15238 | { | |
15239 | enable_command (args, from_tty); | |
15240 | } | |
15241 | ||
4a64f543 | 15242 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
15243 | Not supported by all targets. */ |
15244 | static void | |
15245 | disable_trace_command (char *args, int from_tty) | |
15246 | { | |
15247 | disable_command (args, from_tty); | |
15248 | } | |
15249 | ||
4a64f543 | 15250 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 SS |
15251 | static void |
15252 | delete_trace_command (char *arg, int from_tty) | |
15253 | { | |
35df4500 | 15254 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
15255 | |
15256 | dont_repeat (); | |
15257 | ||
15258 | if (arg == 0) | |
15259 | { | |
15260 | int breaks_to_delete = 0; | |
15261 | ||
15262 | /* Delete all breakpoints if no argument. | |
15263 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
15264 | have to be deleted with an explicit breakpoint number |
15265 | argument. */ | |
1042e4c0 | 15266 | ALL_TRACEPOINTS (b) |
46c6471b | 15267 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
15268 | { |
15269 | breaks_to_delete = 1; | |
15270 | break; | |
15271 | } | |
1042e4c0 SS |
15272 | |
15273 | /* Ask user only if there are some breakpoints to delete. */ | |
15274 | if (!from_tty | |
15275 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
15276 | { | |
35df4500 | 15277 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 15278 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 15279 | delete_breakpoint (b); |
1042e4c0 SS |
15280 | } |
15281 | } | |
15282 | else | |
51be5b68 | 15283 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
1042e4c0 SS |
15284 | } |
15285 | ||
197f0a60 TT |
15286 | /* Helper function for trace_pass_command. */ |
15287 | ||
15288 | static void | |
d9b3f62e | 15289 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 15290 | { |
d9b3f62e | 15291 | tp->pass_count = count; |
6f6484cd | 15292 | observer_notify_breakpoint_modified (&tp->base); |
197f0a60 TT |
15293 | if (from_tty) |
15294 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
d9b3f62e | 15295 | tp->base.number, count); |
197f0a60 TT |
15296 | } |
15297 | ||
1042e4c0 SS |
15298 | /* Set passcount for tracepoint. |
15299 | ||
15300 | First command argument is passcount, second is tracepoint number. | |
15301 | If tracepoint number omitted, apply to most recently defined. | |
15302 | Also accepts special argument "all". */ | |
15303 | ||
15304 | static void | |
15305 | trace_pass_command (char *args, int from_tty) | |
15306 | { | |
d9b3f62e | 15307 | struct tracepoint *t1; |
1042e4c0 | 15308 | unsigned int count; |
1042e4c0 SS |
15309 | |
15310 | if (args == 0 || *args == 0) | |
3e43a32a MS |
15311 | error (_("passcount command requires an " |
15312 | "argument (count + optional TP num)")); | |
1042e4c0 | 15313 | |
4a64f543 | 15314 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 SS |
15315 | |
15316 | while (*args && isspace ((int) *args)) | |
15317 | args++; | |
15318 | ||
15319 | if (*args && strncasecmp (args, "all", 3) == 0) | |
15320 | { | |
d9b3f62e PA |
15321 | struct breakpoint *b; |
15322 | ||
1042e4c0 | 15323 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
15324 | if (*args) |
15325 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 15326 | |
d9b3f62e | 15327 | ALL_TRACEPOINTS (b) |
197f0a60 | 15328 | { |
d9b3f62e | 15329 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
15330 | trace_pass_set_count (t1, count, from_tty); |
15331 | } | |
15332 | } | |
15333 | else if (*args == '\0') | |
1042e4c0 | 15334 | { |
197f0a60 | 15335 | t1 = get_tracepoint_by_number (&args, NULL, 1); |
1042e4c0 | 15336 | if (t1) |
197f0a60 TT |
15337 | trace_pass_set_count (t1, count, from_tty); |
15338 | } | |
15339 | else | |
15340 | { | |
15341 | struct get_number_or_range_state state; | |
15342 | ||
15343 | init_number_or_range (&state, args); | |
15344 | while (!state.finished) | |
1042e4c0 | 15345 | { |
197f0a60 TT |
15346 | t1 = get_tracepoint_by_number (&args, &state, 1); |
15347 | if (t1) | |
15348 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
15349 | } |
15350 | } | |
1042e4c0 SS |
15351 | } |
15352 | ||
d9b3f62e | 15353 | struct tracepoint * |
1042e4c0 SS |
15354 | get_tracepoint (int num) |
15355 | { | |
15356 | struct breakpoint *t; | |
15357 | ||
15358 | ALL_TRACEPOINTS (t) | |
15359 | if (t->number == num) | |
d9b3f62e | 15360 | return (struct tracepoint *) t; |
1042e4c0 SS |
15361 | |
15362 | return NULL; | |
15363 | } | |
15364 | ||
d5551862 SS |
15365 | /* Find the tracepoint with the given target-side number (which may be |
15366 | different from the tracepoint number after disconnecting and | |
15367 | reconnecting). */ | |
15368 | ||
d9b3f62e | 15369 | struct tracepoint * |
d5551862 SS |
15370 | get_tracepoint_by_number_on_target (int num) |
15371 | { | |
d9b3f62e | 15372 | struct breakpoint *b; |
d5551862 | 15373 | |
d9b3f62e PA |
15374 | ALL_TRACEPOINTS (b) |
15375 | { | |
15376 | struct tracepoint *t = (struct tracepoint *) b; | |
15377 | ||
15378 | if (t->number_on_target == num) | |
15379 | return t; | |
15380 | } | |
d5551862 SS |
15381 | |
15382 | return NULL; | |
15383 | } | |
15384 | ||
1042e4c0 | 15385 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 TT |
15386 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
15387 | If OPTIONAL_P is true, then if the argument is missing, the most | |
1042e4c0 | 15388 | recent tracepoint (tracepoint_count) is returned. */ |
d9b3f62e | 15389 | struct tracepoint * |
197f0a60 TT |
15390 | get_tracepoint_by_number (char **arg, |
15391 | struct get_number_or_range_state *state, | |
15392 | int optional_p) | |
1042e4c0 | 15393 | { |
1042e4c0 SS |
15394 | struct breakpoint *t; |
15395 | int tpnum; | |
15396 | char *instring = arg == NULL ? NULL : *arg; | |
15397 | ||
197f0a60 TT |
15398 | if (state) |
15399 | { | |
15400 | gdb_assert (!state->finished); | |
15401 | tpnum = get_number_or_range (state); | |
15402 | } | |
15403 | else if (arg == NULL || *arg == NULL || ! **arg) | |
1042e4c0 SS |
15404 | { |
15405 | if (optional_p) | |
15406 | tpnum = tracepoint_count; | |
15407 | else | |
15408 | error_no_arg (_("tracepoint number")); | |
15409 | } | |
15410 | else | |
197f0a60 | 15411 | tpnum = get_number (arg); |
1042e4c0 SS |
15412 | |
15413 | if (tpnum <= 0) | |
15414 | { | |
15415 | if (instring && *instring) | |
15416 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
15417 | instring); | |
15418 | else | |
3e43a32a MS |
15419 | printf_filtered (_("Tracepoint argument missing " |
15420 | "and no previous tracepoint\n")); | |
1042e4c0 SS |
15421 | return NULL; |
15422 | } | |
15423 | ||
15424 | ALL_TRACEPOINTS (t) | |
15425 | if (t->number == tpnum) | |
15426 | { | |
d9b3f62e | 15427 | return (struct tracepoint *) t; |
1042e4c0 SS |
15428 | } |
15429 | ||
1042e4c0 SS |
15430 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
15431 | return NULL; | |
15432 | } | |
15433 | ||
d9b3f62e PA |
15434 | void |
15435 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
15436 | { | |
15437 | if (b->thread != -1) | |
15438 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
15439 | ||
15440 | if (b->task != 0) | |
15441 | fprintf_unfiltered (fp, " task %d", b->task); | |
15442 | ||
15443 | fprintf_unfiltered (fp, "\n"); | |
15444 | } | |
15445 | ||
6149aea9 PA |
15446 | /* Save information on user settable breakpoints (watchpoints, etc) to |
15447 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
15448 | on each breakpoint and only include the ones for which it returns | |
15449 | non-zero. */ | |
15450 | ||
1042e4c0 | 15451 | static void |
6149aea9 PA |
15452 | save_breakpoints (char *filename, int from_tty, |
15453 | int (*filter) (const struct breakpoint *)) | |
1042e4c0 SS |
15454 | { |
15455 | struct breakpoint *tp; | |
6149aea9 | 15456 | int any = 0; |
a7bdde9e | 15457 | char *pathname; |
1042e4c0 | 15458 | struct cleanup *cleanup; |
a7bdde9e | 15459 | struct ui_file *fp; |
6149aea9 | 15460 | int extra_trace_bits = 0; |
1042e4c0 | 15461 | |
6149aea9 PA |
15462 | if (filename == 0 || *filename == 0) |
15463 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
15464 | |
15465 | /* See if we have anything to save. */ | |
6149aea9 | 15466 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15467 | { |
6149aea9 | 15468 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15469 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
15470 | continue; |
15471 | ||
15472 | /* If we have a filter, only save the breakpoints it accepts. */ | |
15473 | if (filter && !filter (tp)) | |
15474 | continue; | |
15475 | ||
15476 | any = 1; | |
15477 | ||
15478 | if (is_tracepoint (tp)) | |
15479 | { | |
15480 | extra_trace_bits = 1; | |
15481 | ||
15482 | /* We can stop searching. */ | |
15483 | break; | |
15484 | } | |
1042e4c0 | 15485 | } |
6149aea9 PA |
15486 | |
15487 | if (!any) | |
1042e4c0 | 15488 | { |
6149aea9 | 15489 | warning (_("Nothing to save.")); |
1042e4c0 SS |
15490 | return; |
15491 | } | |
15492 | ||
6149aea9 | 15493 | pathname = tilde_expand (filename); |
1042e4c0 | 15494 | cleanup = make_cleanup (xfree, pathname); |
a7bdde9e | 15495 | fp = gdb_fopen (pathname, "w"); |
059fb39f | 15496 | if (!fp) |
6149aea9 PA |
15497 | error (_("Unable to open file '%s' for saving (%s)"), |
15498 | filename, safe_strerror (errno)); | |
a7bdde9e | 15499 | make_cleanup_ui_file_delete (fp); |
8bf6485c | 15500 | |
6149aea9 PA |
15501 | if (extra_trace_bits) |
15502 | save_trace_state_variables (fp); | |
8bf6485c | 15503 | |
6149aea9 | 15504 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15505 | { |
6149aea9 | 15506 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15507 | if (!user_breakpoint_p (tp)) |
6149aea9 | 15508 | continue; |
8bf6485c | 15509 | |
6149aea9 PA |
15510 | /* If we have a filter, only save the breakpoints it accepts. */ |
15511 | if (filter && !filter (tp)) | |
15512 | continue; | |
15513 | ||
348d480f | 15514 | tp->ops->print_recreate (tp, fp); |
1042e4c0 | 15515 | |
6149aea9 PA |
15516 | /* Note, we can't rely on tp->number for anything, as we can't |
15517 | assume the recreated breakpoint numbers will match. Use $bpnum | |
15518 | instead. */ | |
15519 | ||
15520 | if (tp->cond_string) | |
15521 | fprintf_unfiltered (fp, " condition $bpnum %s\n", tp->cond_string); | |
15522 | ||
15523 | if (tp->ignore_count) | |
15524 | fprintf_unfiltered (fp, " ignore $bpnum %d\n", tp->ignore_count); | |
15525 | ||
a7bdde9e | 15526 | if (tp->commands) |
1042e4c0 | 15527 | { |
a7bdde9e VP |
15528 | volatile struct gdb_exception ex; |
15529 | ||
6149aea9 | 15530 | fprintf_unfiltered (fp, " commands\n"); |
a7bdde9e | 15531 | |
79a45e25 | 15532 | ui_out_redirect (current_uiout, fp); |
14dba4b4 | 15533 | TRY_CATCH (ex, RETURN_MASK_ALL) |
1042e4c0 | 15534 | { |
79a45e25 | 15535 | print_command_lines (current_uiout, tp->commands->commands, 2); |
a7bdde9e | 15536 | } |
79a45e25 | 15537 | ui_out_redirect (current_uiout, NULL); |
1042e4c0 | 15538 | |
a7bdde9e VP |
15539 | if (ex.reason < 0) |
15540 | throw_exception (ex); | |
1042e4c0 | 15541 | |
a7bdde9e | 15542 | fprintf_unfiltered (fp, " end\n"); |
1042e4c0 | 15543 | } |
6149aea9 PA |
15544 | |
15545 | if (tp->enable_state == bp_disabled) | |
15546 | fprintf_unfiltered (fp, "disable\n"); | |
15547 | ||
15548 | /* If this is a multi-location breakpoint, check if the locations | |
15549 | should be individually disabled. Watchpoint locations are | |
15550 | special, and not user visible. */ | |
15551 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15552 | { | |
15553 | struct bp_location *loc; | |
15554 | int n = 1; | |
15555 | ||
15556 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
15557 | if (!loc->enabled) | |
15558 | fprintf_unfiltered (fp, "disable $bpnum.%d\n", n); | |
15559 | } | |
1042e4c0 | 15560 | } |
8bf6485c | 15561 | |
6149aea9 | 15562 | if (extra_trace_bits && *default_collect) |
8bf6485c SS |
15563 | fprintf_unfiltered (fp, "set default-collect %s\n", default_collect); |
15564 | ||
1042e4c0 SS |
15565 | do_cleanups (cleanup); |
15566 | if (from_tty) | |
6149aea9 PA |
15567 | printf_filtered (_("Saved to file '%s'.\n"), filename); |
15568 | } | |
15569 | ||
15570 | /* The `save breakpoints' command. */ | |
15571 | ||
15572 | static void | |
15573 | save_breakpoints_command (char *args, int from_tty) | |
15574 | { | |
15575 | save_breakpoints (args, from_tty, NULL); | |
15576 | } | |
15577 | ||
15578 | /* The `save tracepoints' command. */ | |
15579 | ||
15580 | static void | |
15581 | save_tracepoints_command (char *args, int from_tty) | |
15582 | { | |
15583 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15584 | } |
15585 | ||
15586 | /* Create a vector of all tracepoints. */ | |
15587 | ||
15588 | VEC(breakpoint_p) * | |
eeae04df | 15589 | all_tracepoints (void) |
1042e4c0 SS |
15590 | { |
15591 | VEC(breakpoint_p) *tp_vec = 0; | |
15592 | struct breakpoint *tp; | |
15593 | ||
15594 | ALL_TRACEPOINTS (tp) | |
15595 | { | |
15596 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
15597 | } | |
15598 | ||
15599 | return tp_vec; | |
15600 | } | |
15601 | ||
c906108c | 15602 | \f |
4a64f543 MS |
15603 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15604 | commands. It is defined as a macro to prevent duplication. | |
15605 | COMMAND should be a string constant containing the name of the | |
15606 | command. */ | |
31e2b00f | 15607 | #define BREAK_ARGS_HELP(command) \ |
fb7b5af4 SDJ |
15608 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\ |
15609 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ | |
15610 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
15611 | guessed probe type) or `-probe-stap' (for a SystemTap probe).\n\ | |
31e2b00f AS |
15612 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ |
15613 | If a line number is specified, break at start of code for that line.\n\ | |
15614 | If a function is specified, break at start of code for that function.\n\ | |
15615 | If an address is specified, break at that exact address.\n\ | |
dc10affe PA |
15616 | With no LOCATION, uses current execution address of the selected\n\ |
15617 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15618 | \n\ |
15619 | THREADNUM is the number from \"info threads\".\n\ | |
15620 | CONDITION is a boolean expression.\n\ | |
15621 | \n\ | |
d41c0fc8 PA |
15622 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15623 | conditions are different.\n\ | |
31e2b00f AS |
15624 | \n\ |
15625 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15626 | ||
44feb3ce TT |
15627 | /* List of subcommands for "catch". */ |
15628 | static struct cmd_list_element *catch_cmdlist; | |
15629 | ||
15630 | /* List of subcommands for "tcatch". */ | |
15631 | static struct cmd_list_element *tcatch_cmdlist; | |
15632 | ||
9ac4176b | 15633 | void |
44feb3ce TT |
15634 | add_catch_command (char *name, char *docstring, |
15635 | void (*sfunc) (char *args, int from_tty, | |
15636 | struct cmd_list_element *command), | |
625e8578 | 15637 | completer_ftype *completer, |
44feb3ce TT |
15638 | void *user_data_catch, |
15639 | void *user_data_tcatch) | |
15640 | { | |
15641 | struct cmd_list_element *command; | |
15642 | ||
15643 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
15644 | &catch_cmdlist); | |
15645 | set_cmd_sfunc (command, sfunc); | |
15646 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15647 | set_cmd_completer (command, completer); |
44feb3ce TT |
15648 | |
15649 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
15650 | &tcatch_cmdlist); | |
15651 | set_cmd_sfunc (command, sfunc); | |
15652 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15653 | set_cmd_completer (command, completer); |
44feb3ce TT |
15654 | } |
15655 | ||
6c95b8df | 15656 | static void |
a79b8f6e | 15657 | clear_syscall_counts (struct inferior *inf) |
6c95b8df | 15658 | { |
fa3064dd YQ |
15659 | struct catch_syscall_inferior_data *inf_data |
15660 | = get_catch_syscall_inferior_data (inf); | |
15661 | ||
15662 | inf_data->total_syscalls_count = 0; | |
15663 | inf_data->any_syscall_count = 0; | |
15664 | VEC_free (int, inf_data->syscalls_counts); | |
6c95b8df PA |
15665 | } |
15666 | ||
6149aea9 PA |
15667 | static void |
15668 | save_command (char *arg, int from_tty) | |
15669 | { | |
3e43a32a MS |
15670 | printf_unfiltered (_("\"save\" must be followed by " |
15671 | "the name of a save subcommand.\n")); | |
6149aea9 PA |
15672 | help_list (save_cmdlist, "save ", -1, gdb_stdout); |
15673 | } | |
15674 | ||
84f4c1fe PM |
15675 | struct breakpoint * |
15676 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
15677 | void *data) | |
15678 | { | |
35df4500 | 15679 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15680 | |
35df4500 | 15681 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
15682 | { |
15683 | if ((*callback) (b, data)) | |
15684 | return b; | |
15685 | } | |
15686 | ||
15687 | return NULL; | |
15688 | } | |
15689 | ||
0574c78f GB |
15690 | /* Zero if any of the breakpoint's locations could be a location where |
15691 | functions have been inlined, nonzero otherwise. */ | |
15692 | ||
15693 | static int | |
15694 | is_non_inline_function (struct breakpoint *b) | |
15695 | { | |
15696 | /* The shared library event breakpoint is set on the address of a | |
15697 | non-inline function. */ | |
15698 | if (b->type == bp_shlib_event) | |
15699 | return 1; | |
15700 | ||
15701 | return 0; | |
15702 | } | |
15703 | ||
15704 | /* Nonzero if the specified PC cannot be a location where functions | |
15705 | have been inlined. */ | |
15706 | ||
15707 | int | |
09ac7c10 TT |
15708 | pc_at_non_inline_function (struct address_space *aspace, CORE_ADDR pc, |
15709 | const struct target_waitstatus *ws) | |
0574c78f GB |
15710 | { |
15711 | struct breakpoint *b; | |
15712 | struct bp_location *bl; | |
15713 | ||
15714 | ALL_BREAKPOINTS (b) | |
15715 | { | |
15716 | if (!is_non_inline_function (b)) | |
15717 | continue; | |
15718 | ||
15719 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15720 | { | |
15721 | if (!bl->shlib_disabled | |
09ac7c10 | 15722 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15723 | return 1; |
15724 | } | |
15725 | } | |
15726 | ||
15727 | return 0; | |
15728 | } | |
15729 | ||
2060206e PA |
15730 | void |
15731 | initialize_breakpoint_ops (void) | |
15732 | { | |
15733 | static int initialized = 0; | |
15734 | ||
15735 | struct breakpoint_ops *ops; | |
15736 | ||
15737 | if (initialized) | |
15738 | return; | |
15739 | initialized = 1; | |
15740 | ||
15741 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15742 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15743 | internal and momentary breakpoints, etc.). */ | |
15744 | ops = &bkpt_base_breakpoint_ops; | |
15745 | *ops = base_breakpoint_ops; | |
15746 | ops->re_set = bkpt_re_set; | |
15747 | ops->insert_location = bkpt_insert_location; | |
15748 | ops->remove_location = bkpt_remove_location; | |
15749 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
983af33b SDJ |
15750 | ops->create_sals_from_address = bkpt_create_sals_from_address; |
15751 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; | |
15752 | ops->decode_linespec = bkpt_decode_linespec; | |
2060206e PA |
15753 | |
15754 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15755 | ops = &bkpt_breakpoint_ops; | |
15756 | *ops = bkpt_base_breakpoint_ops; | |
15757 | ops->re_set = bkpt_re_set; | |
15758 | ops->resources_needed = bkpt_resources_needed; | |
15759 | ops->print_it = bkpt_print_it; | |
15760 | ops->print_mention = bkpt_print_mention; | |
15761 | ops->print_recreate = bkpt_print_recreate; | |
15762 | ||
15763 | /* Ranged breakpoints. */ | |
15764 | ops = &ranged_breakpoint_ops; | |
15765 | *ops = bkpt_breakpoint_ops; | |
15766 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15767 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15768 | ops->print_it = print_it_ranged_breakpoint; | |
15769 | ops->print_one = print_one_ranged_breakpoint; | |
15770 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15771 | ops->print_mention = print_mention_ranged_breakpoint; | |
15772 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15773 | ||
15774 | /* Internal breakpoints. */ | |
15775 | ops = &internal_breakpoint_ops; | |
15776 | *ops = bkpt_base_breakpoint_ops; | |
15777 | ops->re_set = internal_bkpt_re_set; | |
15778 | ops->check_status = internal_bkpt_check_status; | |
15779 | ops->print_it = internal_bkpt_print_it; | |
15780 | ops->print_mention = internal_bkpt_print_mention; | |
15781 | ||
15782 | /* Momentary breakpoints. */ | |
15783 | ops = &momentary_breakpoint_ops; | |
15784 | *ops = bkpt_base_breakpoint_ops; | |
15785 | ops->re_set = momentary_bkpt_re_set; | |
15786 | ops->check_status = momentary_bkpt_check_status; | |
15787 | ops->print_it = momentary_bkpt_print_it; | |
15788 | ops->print_mention = momentary_bkpt_print_mention; | |
15789 | ||
e2e4d78b JK |
15790 | /* Momentary breakpoints for bp_longjmp and bp_exception. */ |
15791 | ops = &longjmp_breakpoint_ops; | |
15792 | *ops = momentary_breakpoint_ops; | |
15793 | ops->dtor = longjmp_bkpt_dtor; | |
15794 | ||
55aa24fb SDJ |
15795 | /* Probe breakpoints. */ |
15796 | ops = &bkpt_probe_breakpoint_ops; | |
15797 | *ops = bkpt_breakpoint_ops; | |
15798 | ops->insert_location = bkpt_probe_insert_location; | |
15799 | ops->remove_location = bkpt_probe_remove_location; | |
15800 | ops->create_sals_from_address = bkpt_probe_create_sals_from_address; | |
15801 | ops->decode_linespec = bkpt_probe_decode_linespec; | |
15802 | ||
2060206e PA |
15803 | /* GNU v3 exception catchpoints. */ |
15804 | ops = &gnu_v3_exception_catchpoint_ops; | |
15805 | *ops = bkpt_breakpoint_ops; | |
15806 | ops->print_it = print_it_exception_catchpoint; | |
15807 | ops->print_one = print_one_exception_catchpoint; | |
15808 | ops->print_mention = print_mention_exception_catchpoint; | |
15809 | ops->print_recreate = print_recreate_exception_catchpoint; | |
15810 | ||
15811 | /* Watchpoints. */ | |
15812 | ops = &watchpoint_breakpoint_ops; | |
15813 | *ops = base_breakpoint_ops; | |
3a5c3e22 | 15814 | ops->dtor = dtor_watchpoint; |
2060206e PA |
15815 | ops->re_set = re_set_watchpoint; |
15816 | ops->insert_location = insert_watchpoint; | |
15817 | ops->remove_location = remove_watchpoint; | |
15818 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15819 | ops->check_status = check_status_watchpoint; | |
15820 | ops->resources_needed = resources_needed_watchpoint; | |
15821 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15822 | ops->print_it = print_it_watchpoint; | |
15823 | ops->print_mention = print_mention_watchpoint; | |
15824 | ops->print_recreate = print_recreate_watchpoint; | |
15825 | ||
15826 | /* Masked watchpoints. */ | |
15827 | ops = &masked_watchpoint_breakpoint_ops; | |
15828 | *ops = watchpoint_breakpoint_ops; | |
15829 | ops->insert_location = insert_masked_watchpoint; | |
15830 | ops->remove_location = remove_masked_watchpoint; | |
15831 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15832 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15833 | ops->print_it = print_it_masked_watchpoint; | |
15834 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15835 | ops->print_mention = print_mention_masked_watchpoint; | |
15836 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15837 | ||
15838 | /* Tracepoints. */ | |
15839 | ops = &tracepoint_breakpoint_ops; | |
15840 | *ops = base_breakpoint_ops; | |
15841 | ops->re_set = tracepoint_re_set; | |
15842 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15843 | ops->print_one_detail = tracepoint_print_one_detail; | |
15844 | ops->print_mention = tracepoint_print_mention; | |
15845 | ops->print_recreate = tracepoint_print_recreate; | |
983af33b SDJ |
15846 | ops->create_sals_from_address = tracepoint_create_sals_from_address; |
15847 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; | |
15848 | ops->decode_linespec = tracepoint_decode_linespec; | |
15849 | ||
55aa24fb SDJ |
15850 | /* Probe tracepoints. */ |
15851 | ops = &tracepoint_probe_breakpoint_ops; | |
15852 | *ops = tracepoint_breakpoint_ops; | |
15853 | ops->create_sals_from_address = tracepoint_probe_create_sals_from_address; | |
15854 | ops->decode_linespec = tracepoint_probe_decode_linespec; | |
15855 | ||
983af33b SDJ |
15856 | /* Static tracepoints with marker (`-m'). */ |
15857 | ops = &strace_marker_breakpoint_ops; | |
15858 | *ops = tracepoint_breakpoint_ops; | |
15859 | ops->create_sals_from_address = strace_marker_create_sals_from_address; | |
15860 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; | |
15861 | ops->decode_linespec = strace_marker_decode_linespec; | |
2060206e PA |
15862 | |
15863 | /* Fork catchpoints. */ | |
15864 | ops = &catch_fork_breakpoint_ops; | |
15865 | *ops = base_breakpoint_ops; | |
15866 | ops->insert_location = insert_catch_fork; | |
15867 | ops->remove_location = remove_catch_fork; | |
15868 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15869 | ops->print_it = print_it_catch_fork; | |
15870 | ops->print_one = print_one_catch_fork; | |
15871 | ops->print_mention = print_mention_catch_fork; | |
15872 | ops->print_recreate = print_recreate_catch_fork; | |
15873 | ||
15874 | /* Vfork catchpoints. */ | |
15875 | ops = &catch_vfork_breakpoint_ops; | |
15876 | *ops = base_breakpoint_ops; | |
15877 | ops->insert_location = insert_catch_vfork; | |
15878 | ops->remove_location = remove_catch_vfork; | |
15879 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15880 | ops->print_it = print_it_catch_vfork; | |
15881 | ops->print_one = print_one_catch_vfork; | |
15882 | ops->print_mention = print_mention_catch_vfork; | |
15883 | ops->print_recreate = print_recreate_catch_vfork; | |
15884 | ||
15885 | /* Exec catchpoints. */ | |
15886 | ops = &catch_exec_breakpoint_ops; | |
15887 | *ops = base_breakpoint_ops; | |
15888 | ops->dtor = dtor_catch_exec; | |
15889 | ops->insert_location = insert_catch_exec; | |
15890 | ops->remove_location = remove_catch_exec; | |
15891 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15892 | ops->print_it = print_it_catch_exec; | |
15893 | ops->print_one = print_one_catch_exec; | |
15894 | ops->print_mention = print_mention_catch_exec; | |
15895 | ops->print_recreate = print_recreate_catch_exec; | |
15896 | ||
15897 | /* Syscall catchpoints. */ | |
15898 | ops = &catch_syscall_breakpoint_ops; | |
15899 | *ops = base_breakpoint_ops; | |
15900 | ops->dtor = dtor_catch_syscall; | |
15901 | ops->insert_location = insert_catch_syscall; | |
15902 | ops->remove_location = remove_catch_syscall; | |
15903 | ops->breakpoint_hit = breakpoint_hit_catch_syscall; | |
15904 | ops->print_it = print_it_catch_syscall; | |
15905 | ops->print_one = print_one_catch_syscall; | |
15906 | ops->print_mention = print_mention_catch_syscall; | |
15907 | ops->print_recreate = print_recreate_catch_syscall; | |
edcc5120 TT |
15908 | |
15909 | /* Solib-related catchpoints. */ | |
15910 | ops = &catch_solib_breakpoint_ops; | |
15911 | *ops = base_breakpoint_ops; | |
15912 | ops->dtor = dtor_catch_solib; | |
15913 | ops->insert_location = insert_catch_solib; | |
15914 | ops->remove_location = remove_catch_solib; | |
15915 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15916 | ops->check_status = check_status_catch_solib; | |
15917 | ops->print_it = print_it_catch_solib; | |
15918 | ops->print_one = print_one_catch_solib; | |
15919 | ops->print_mention = print_mention_catch_solib; | |
15920 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15921 | |
15922 | ops = &dprintf_breakpoint_ops; | |
15923 | *ops = bkpt_base_breakpoint_ops; | |
15924 | ops->re_set = bkpt_re_set; | |
15925 | ops->resources_needed = bkpt_resources_needed; | |
15926 | ops->print_it = bkpt_print_it; | |
15927 | ops->print_mention = bkpt_print_mention; | |
15928 | ops->print_recreate = bkpt_print_recreate; | |
2060206e PA |
15929 | } |
15930 | ||
8bfd80db YQ |
15931 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
15932 | ||
15933 | static struct cmd_list_element *enablebreaklist = NULL; | |
15934 | ||
c906108c | 15935 | void |
fba45db2 | 15936 | _initialize_breakpoint (void) |
c906108c SS |
15937 | { |
15938 | struct cmd_list_element *c; | |
15939 | ||
2060206e PA |
15940 | initialize_breakpoint_ops (); |
15941 | ||
84acb35a | 15942 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
6c95b8df | 15943 | observer_attach_inferior_exit (clear_syscall_counts); |
1f3b5d1b | 15944 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 15945 | |
55aa24fb SDJ |
15946 | breakpoint_objfile_key |
15947 | = register_objfile_data_with_cleanup (NULL, free_breakpoint_probes); | |
17450429 | 15948 | |
fa3064dd | 15949 | catch_syscall_inferior_data |
8e260fc0 TT |
15950 | = register_inferior_data_with_cleanup (NULL, |
15951 | catch_syscall_inferior_data_cleanup); | |
fa3064dd | 15952 | |
c906108c SS |
15953 | breakpoint_chain = 0; |
15954 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15955 | before a breakpoint is set. */ | |
15956 | breakpoint_count = 0; | |
15957 | ||
1042e4c0 SS |
15958 | tracepoint_count = 0; |
15959 | ||
1bedd215 AC |
15960 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15961 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15962 | Usage is `ignore N COUNT'.")); | |
c906108c | 15963 | if (xdb_commands) |
c5aa993b | 15964 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 15965 | |
1bedd215 AC |
15966 | add_com ("commands", class_breakpoint, commands_command, _("\ |
15967 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
15968 | Give breakpoint number as argument after \"commands\".\n\ |
15969 | With no argument, the targeted breakpoint is the last one set.\n\ | |
15970 | The commands themselves follow starting on the next line.\n\ | |
15971 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15972 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15973 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15974 | |
d55637df | 15975 | c = add_com ("condition", class_breakpoint, condition_command, _("\ |
1bedd215 | 15976 | Specify breakpoint number N to break only if COND is true.\n\ |
c906108c | 15977 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 15978 | expression to be evaluated whenever breakpoint N is reached.")); |
d55637df | 15979 | set_cmd_completer (c, condition_completer); |
c906108c | 15980 | |
1bedd215 | 15981 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15982 | Set a temporary breakpoint.\n\ |
c906108c SS |
15983 | Like \"break\" except the breakpoint is only temporary,\n\ |
15984 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15985 | by using \"enable delete\" on the breakpoint number.\n\ |
15986 | \n" | |
15987 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15988 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15989 | |
1bedd215 | 15990 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15991 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15992 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15993 | some target hardware may not have this support.\n\ |
15994 | \n" | |
15995 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15996 | set_cmd_completer (c, location_completer); |
c906108c | 15997 | |
1bedd215 | 15998 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15999 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 16000 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
16001 | so it will be deleted when hit.\n\ |
16002 | \n" | |
16003 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 16004 | set_cmd_completer (c, location_completer); |
c906108c | 16005 | |
1bedd215 AC |
16006 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
16007 | Enable some breakpoints.\n\ | |
c906108c SS |
16008 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
16009 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
16010 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 16011 | With a subcommand you can enable temporarily."), |
c906108c SS |
16012 | &enablelist, "enable ", 1, &cmdlist); |
16013 | if (xdb_commands) | |
1bedd215 AC |
16014 | add_com ("ab", class_breakpoint, enable_command, _("\ |
16015 | Enable some breakpoints.\n\ | |
c906108c SS |
16016 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
16017 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
16018 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 16019 | With a subcommand you can enable temporarily.")); |
c906108c SS |
16020 | |
16021 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
16022 | ||
84951ab5 | 16023 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 16024 | Enable some breakpoints.\n\ |
c906108c SS |
16025 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
16026 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 16027 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 16028 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 16029 | |
1a966eab AC |
16030 | add_cmd ("once", no_class, enable_once_command, _("\ |
16031 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
16032 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
16033 | &enablebreaklist); |
16034 | ||
1a966eab AC |
16035 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
16036 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
16037 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
16038 | &enablebreaklist); |
16039 | ||
816338b5 SS |
16040 | add_cmd ("count", no_class, enable_count_command, _("\ |
16041 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
16042 | If a breakpoint is hit while enabled in this fashion,\n\ | |
16043 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
16044 | &enablebreaklist); | |
16045 | ||
1a966eab AC |
16046 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
16047 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
16048 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
16049 | &enablelist); |
16050 | ||
1a966eab AC |
16051 | add_cmd ("once", no_class, enable_once_command, _("\ |
16052 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
16053 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
816338b5 SS |
16054 | &enablelist); |
16055 | ||
16056 | add_cmd ("count", no_class, enable_count_command, _("\ | |
16057 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
16058 | If a breakpoint is hit while enabled in this fashion,\n\ | |
16059 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
16060 | &enablelist); |
16061 | ||
1bedd215 AC |
16062 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
16063 | Disable some breakpoints.\n\ | |
c906108c SS |
16064 | Arguments are breakpoint numbers with spaces in between.\n\ |
16065 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 16066 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
16067 | &disablelist, "disable ", 1, &cmdlist); |
16068 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
16069 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
16070 | if (xdb_commands) | |
1bedd215 AC |
16071 | add_com ("sb", class_breakpoint, disable_command, _("\ |
16072 | Disable some breakpoints.\n\ | |
c906108c SS |
16073 | Arguments are breakpoint numbers with spaces in between.\n\ |
16074 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 16075 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.")); |
c906108c | 16076 | |
1a966eab AC |
16077 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
16078 | Disable some breakpoints.\n\ | |
c906108c SS |
16079 | Arguments are breakpoint numbers with spaces in between.\n\ |
16080 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 16081 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 16082 | This command may be abbreviated \"disable\"."), |
c906108c SS |
16083 | &disablelist); |
16084 | ||
1bedd215 AC |
16085 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
16086 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
16087 | Arguments are breakpoint numbers with spaces in between.\n\ |
16088 | To delete all breakpoints, give no argument.\n\ | |
16089 | \n\ | |
16090 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 16091 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
16092 | &deletelist, "delete ", 1, &cmdlist); |
16093 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 16094 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 16095 | if (xdb_commands) |
1bedd215 AC |
16096 | add_com ("db", class_breakpoint, delete_command, _("\ |
16097 | Delete some breakpoints.\n\ | |
c906108c | 16098 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 16099 | To delete all breakpoints, give no argument.\n")); |
c906108c | 16100 | |
1a966eab AC |
16101 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
16102 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
16103 | Arguments are breakpoint numbers with spaces in between.\n\ |
16104 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 16105 | This command may be abbreviated \"delete\"."), |
c906108c SS |
16106 | &deletelist); |
16107 | ||
1bedd215 AC |
16108 | add_com ("clear", class_breakpoint, clear_command, _("\ |
16109 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
16110 | Argument may be line number, function name, or \"*\" and an address.\n\ |
16111 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
16112 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
16113 | If an address is specified, breakpoints at that address are cleared.\n\ |
16114 | \n\ | |
16115 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
16116 | is executing in.\n\ |
16117 | \n\ | |
1bedd215 | 16118 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 16119 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 16120 | |
1bedd215 | 16121 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
16122 | Set breakpoint at specified line or function.\n" |
16123 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 16124 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 16125 | |
c906108c SS |
16126 | add_com_alias ("b", "break", class_run, 1); |
16127 | add_com_alias ("br", "break", class_run, 1); | |
16128 | add_com_alias ("bre", "break", class_run, 1); | |
16129 | add_com_alias ("brea", "break", class_run, 1); | |
16130 | ||
7681d515 PM |
16131 | if (xdb_commands) |
16132 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
c906108c SS |
16133 | |
16134 | if (dbx_commands) | |
16135 | { | |
1bedd215 AC |
16136 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
16137 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
16138 | &stoplist, "stop ", 1, &cmdlist); |
16139 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 16140 | _("Break in function or address."), &stoplist); |
c5aa993b | 16141 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 16142 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
16143 | add_com ("status", class_info, breakpoints_info, _("\ |
16144 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
16145 | The \"Type\" column indicates one of:\n\ |
16146 | \tbreakpoint - normal breakpoint\n\ | |
16147 | \twatchpoint - watchpoint\n\ | |
16148 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
16149 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
16150 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
16151 | address and file/line number respectively.\n\ |
16152 | \n\ | |
16153 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16154 | are set to the address of the last breakpoint listed unless the command\n\ |
16155 | is prefixed with \"server \".\n\n\ | |
c906108c | 16156 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 16157 | breakpoint set.")); |
c906108c SS |
16158 | } |
16159 | ||
1bedd215 | 16160 | add_info ("breakpoints", breakpoints_info, _("\ |
e5a67952 | 16161 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
16162 | The \"Type\" column indicates one of:\n\ |
16163 | \tbreakpoint - normal breakpoint\n\ | |
16164 | \twatchpoint - watchpoint\n\ | |
16165 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
16166 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
16167 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
16168 | address and file/line number respectively.\n\ |
16169 | \n\ | |
16170 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16171 | are set to the address of the last breakpoint listed unless the command\n\ |
16172 | is prefixed with \"server \".\n\n\ | |
c906108c | 16173 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 16174 | breakpoint set.")); |
c906108c | 16175 | |
6b04bdb7 MS |
16176 | add_info_alias ("b", "breakpoints", 1); |
16177 | ||
c906108c | 16178 | if (xdb_commands) |
1bedd215 AC |
16179 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
16180 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
16181 | The \"Type\" column indicates one of:\n\ |
16182 | \tbreakpoint - normal breakpoint\n\ | |
16183 | \twatchpoint - watchpoint\n\ | |
16184 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
16185 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
16186 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
16187 | address and file/line number respectively.\n\ |
16188 | \n\ | |
16189 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16190 | are set to the address of the last breakpoint listed unless the command\n\ |
16191 | is prefixed with \"server \".\n\n\ | |
c906108c | 16192 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 16193 | breakpoint set.")); |
c906108c | 16194 | |
1a966eab AC |
16195 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
16196 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
16197 | The \"Type\" column indicates one of:\n\ |
16198 | \tbreakpoint - normal breakpoint\n\ | |
16199 | \twatchpoint - watchpoint\n\ | |
16200 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
16201 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
16202 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
16203 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
16204 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
16205 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
16206 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
16207 | address and file/line number respectively.\n\ |
16208 | \n\ | |
16209 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16210 | are set to the address of the last breakpoint listed unless the command\n\ |
16211 | is prefixed with \"server \".\n\n\ | |
c906108c | 16212 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 16213 | breakpoint set."), |
c906108c SS |
16214 | &maintenanceinfolist); |
16215 | ||
44feb3ce TT |
16216 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
16217 | Set catchpoints to catch events."), | |
16218 | &catch_cmdlist, "catch ", | |
16219 | 0/*allow-unknown*/, &cmdlist); | |
16220 | ||
16221 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
16222 | Set temporary catchpoints to catch events."), | |
16223 | &tcatch_cmdlist, "tcatch ", | |
16224 | 0/*allow-unknown*/, &cmdlist); | |
16225 | ||
16226 | /* Add catch and tcatch sub-commands. */ | |
16227 | add_catch_command ("catch", _("\ | |
88e7d25d | 16228 | Catch an exception, when caught."), |
44feb3ce | 16229 | catch_catch_command, |
a96d9b2e | 16230 | NULL, |
44feb3ce TT |
16231 | CATCH_PERMANENT, |
16232 | CATCH_TEMPORARY); | |
16233 | add_catch_command ("throw", _("\ | |
88e7d25d | 16234 | Catch an exception, when thrown."), |
44feb3ce | 16235 | catch_throw_command, |
a96d9b2e | 16236 | NULL, |
44feb3ce TT |
16237 | CATCH_PERMANENT, |
16238 | CATCH_TEMPORARY); | |
16239 | add_catch_command ("fork", _("Catch calls to fork."), | |
16240 | catch_fork_command_1, | |
a96d9b2e | 16241 | NULL, |
44feb3ce TT |
16242 | (void *) (uintptr_t) catch_fork_permanent, |
16243 | (void *) (uintptr_t) catch_fork_temporary); | |
16244 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
16245 | catch_fork_command_1, | |
a96d9b2e | 16246 | NULL, |
44feb3ce TT |
16247 | (void *) (uintptr_t) catch_vfork_permanent, |
16248 | (void *) (uintptr_t) catch_vfork_temporary); | |
16249 | add_catch_command ("exec", _("Catch calls to exec."), | |
16250 | catch_exec_command_1, | |
a96d9b2e SDJ |
16251 | NULL, |
16252 | CATCH_PERMANENT, | |
16253 | CATCH_TEMPORARY); | |
edcc5120 TT |
16254 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
16255 | Usage: catch load [REGEX]\n\ | |
16256 | If REGEX is given, only stop for libraries matching the regular expression."), | |
16257 | catch_load_command_1, | |
16258 | NULL, | |
16259 | CATCH_PERMANENT, | |
16260 | CATCH_TEMPORARY); | |
16261 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
16262 | Usage: catch unload [REGEX]\n\ | |
16263 | If REGEX is given, only stop for libraries matching the regular expression."), | |
16264 | catch_unload_command_1, | |
16265 | NULL, | |
16266 | CATCH_PERMANENT, | |
16267 | CATCH_TEMPORARY); | |
a96d9b2e SDJ |
16268 | add_catch_command ("syscall", _("\ |
16269 | Catch system calls by their names and/or numbers.\n\ | |
16270 | Arguments say which system calls to catch. If no arguments\n\ | |
16271 | are given, every system call will be caught.\n\ | |
16272 | Arguments, if given, should be one or more system call names\n\ | |
16273 | (if your system supports that), or system call numbers."), | |
16274 | catch_syscall_command_1, | |
16275 | catch_syscall_completer, | |
44feb3ce TT |
16276 | CATCH_PERMANENT, |
16277 | CATCH_TEMPORARY); | |
c5aa993b | 16278 | |
1bedd215 AC |
16279 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
16280 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 16281 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 16282 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16283 | an expression changes.\n\ |
16284 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16285 | the memory to which it refers.")); | |
65d12d83 | 16286 | set_cmd_completer (c, expression_completer); |
c906108c | 16287 | |
1bedd215 AC |
16288 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
16289 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 16290 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 16291 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16292 | an expression is read.\n\ |
16293 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16294 | the memory to which it refers.")); | |
65d12d83 | 16295 | set_cmd_completer (c, expression_completer); |
c906108c | 16296 | |
1bedd215 AC |
16297 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
16298 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 16299 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 16300 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16301 | an expression is either read or written.\n\ |
16302 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16303 | the memory to which it refers.")); | |
65d12d83 | 16304 | set_cmd_completer (c, expression_completer); |
c906108c | 16305 | |
d77f58be | 16306 | add_info ("watchpoints", watchpoints_info, _("\ |
e5a67952 | 16307 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 16308 | |
920d2a44 AC |
16309 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
16310 | respond to changes - contrary to the description. */ | |
85c07804 AC |
16311 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
16312 | &can_use_hw_watchpoints, _("\ | |
16313 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
16314 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
16315 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
16316 | such is available. (However, any hardware watchpoints that were\n\ | |
16317 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
16318 | hardware.)"), |
16319 | NULL, | |
920d2a44 | 16320 | show_can_use_hw_watchpoints, |
85c07804 | 16321 | &setlist, &showlist); |
c906108c SS |
16322 | |
16323 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 16324 | |
1042e4c0 SS |
16325 | /* Tracepoint manipulation commands. */ |
16326 | ||
16327 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
16328 | Set a tracepoint at specified line or function.\n\ | |
16329 | \n" | |
16330 | BREAK_ARGS_HELP ("trace") "\n\ | |
16331 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16332 | set_cmd_completer (c, location_completer); | |
16333 | ||
16334 | add_com_alias ("tp", "trace", class_alias, 0); | |
16335 | add_com_alias ("tr", "trace", class_alias, 1); | |
16336 | add_com_alias ("tra", "trace", class_alias, 1); | |
16337 | add_com_alias ("trac", "trace", class_alias, 1); | |
16338 | ||
7a697b8d SS |
16339 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
16340 | Set a fast tracepoint at specified line or function.\n\ | |
16341 | \n" | |
16342 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
16343 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16344 | set_cmd_completer (c, location_completer); | |
16345 | ||
0fb4aa4b PA |
16346 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
16347 | Set a static tracepoint at specified line, function or marker.\n\ | |
16348 | \n\ | |
16349 | strace [LOCATION] [if CONDITION]\n\ | |
16350 | LOCATION may be a line number, function name, \"*\" and an address,\n\ | |
16351 | or -m MARKER_ID.\n\ | |
16352 | If a line number is specified, probe the marker at start of code\n\ | |
16353 | for that line. If a function is specified, probe the marker at start\n\ | |
16354 | of code for that function. If an address is specified, probe the marker\n\ | |
16355 | at that exact address. If a marker id is specified, probe the marker\n\ | |
16356 | with that name. With no LOCATION, uses current execution address of\n\ | |
16357 | the selected stack frame.\n\ | |
16358 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ | |
16359 | This collects arbitrary user data passed in the probe point call to the\n\ | |
16360 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
16361 | by printing the $_sdata variable like any other convenience variable.\n\ | |
16362 | \n\ | |
16363 | CONDITION is a boolean expression.\n\ | |
16364 | \n\ | |
d41c0fc8 PA |
16365 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
16366 | conditions are different.\n\ | |
0fb4aa4b PA |
16367 | \n\ |
16368 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
16369 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16370 | set_cmd_completer (c, location_completer); | |
16371 | ||
1042e4c0 | 16372 | add_info ("tracepoints", tracepoints_info, _("\ |
e5a67952 | 16373 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
16374 | Convenience variable \"$tpnum\" contains the number of the\n\ |
16375 | last tracepoint set.")); | |
16376 | ||
16377 | add_info_alias ("tp", "tracepoints", 1); | |
16378 | ||
16379 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
16380 | Delete specified tracepoints.\n\ | |
16381 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16382 | No argument means delete all tracepoints."), | |
16383 | &deletelist); | |
7e20dfcd | 16384 | add_alias_cmd ("tr", "tracepoints", class_trace, 1, &deletelist); |
1042e4c0 SS |
16385 | |
16386 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
16387 | Disable specified tracepoints.\n\ | |
16388 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16389 | No argument means disable all tracepoints."), | |
16390 | &disablelist); | |
16391 | deprecate_cmd (c, "disable"); | |
16392 | ||
16393 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
16394 | Enable specified tracepoints.\n\ | |
16395 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16396 | No argument means enable all tracepoints."), | |
16397 | &enablelist); | |
16398 | deprecate_cmd (c, "enable"); | |
16399 | ||
16400 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
16401 | Set the passcount for a tracepoint.\n\ | |
16402 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
16403 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
16404 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
16405 | ||
6149aea9 PA |
16406 | add_prefix_cmd ("save", class_breakpoint, save_command, |
16407 | _("Save breakpoint definitions as a script."), | |
16408 | &save_cmdlist, "save ", | |
16409 | 0/*allow-unknown*/, &cmdlist); | |
16410 | ||
16411 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
16412 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 16413 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
16414 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
16415 | session to restore them."), | |
16416 | &save_cmdlist); | |
16417 | set_cmd_completer (c, filename_completer); | |
16418 | ||
16419 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 16420 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
16421 | Use the 'source' command in another debug session to restore them."), |
16422 | &save_cmdlist); | |
1042e4c0 SS |
16423 | set_cmd_completer (c, filename_completer); |
16424 | ||
6149aea9 PA |
16425 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
16426 | deprecate_cmd (c, "save tracepoints"); | |
16427 | ||
1bedd215 | 16428 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
16429 | Breakpoint specific settings\n\ |
16430 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 16431 | pending breakpoint behavior"), |
fa8d40ab JJ |
16432 | &breakpoint_set_cmdlist, "set breakpoint ", |
16433 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 16434 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
16435 | Breakpoint specific settings\n\ |
16436 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 16437 | pending breakpoint behavior"), |
fa8d40ab JJ |
16438 | &breakpoint_show_cmdlist, "show breakpoint ", |
16439 | 0/*allow-unknown*/, &showlist); | |
16440 | ||
7915a72c AC |
16441 | add_setshow_auto_boolean_cmd ("pending", no_class, |
16442 | &pending_break_support, _("\ | |
16443 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
16444 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
16445 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
16446 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
16447 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 16448 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 16449 | NULL, |
920d2a44 | 16450 | show_pending_break_support, |
6e1d7d6c AC |
16451 | &breakpoint_set_cmdlist, |
16452 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
16453 | |
16454 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
16455 | |
16456 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
16457 | &automatic_hardware_breakpoints, _("\ | |
16458 | Set automatic usage of hardware breakpoints."), _("\ | |
16459 | Show automatic usage of hardware breakpoints."), _("\ | |
16460 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
16461 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
16462 | a warning will be emitted for such breakpoints."), | |
16463 | NULL, | |
16464 | show_automatic_hardware_breakpoints, | |
16465 | &breakpoint_set_cmdlist, | |
16466 | &breakpoint_show_cmdlist); | |
74960c60 | 16467 | |
72d0e2c5 YQ |
16468 | add_setshow_auto_boolean_cmd ("always-inserted", class_support, |
16469 | &always_inserted_mode, _("\ | |
74960c60 VP |
16470 | Set mode for inserting breakpoints."), _("\ |
16471 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
16472 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
16473 | resumed, and removed when execution stops. When this mode is on,\n\ | |
16474 | breakpoints are inserted immediately and removed only when the user\n\ | |
16475 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
16476 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
16477 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
16478 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
16479 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
72d0e2c5 YQ |
16480 | NULL, |
16481 | &show_always_inserted_mode, | |
16482 | &breakpoint_set_cmdlist, | |
16483 | &breakpoint_show_cmdlist); | |
f1310107 | 16484 | |
b775012e LM |
16485 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
16486 | condition_evaluation_enums, | |
16487 | &condition_evaluation_mode_1, _("\ | |
16488 | Set mode of breakpoint condition evaluation."), _("\ | |
16489 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 16490 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
16491 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
16492 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
16493 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
16494 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
16495 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
16496 | be set to \"gdb\""), | |
16497 | &set_condition_evaluation_mode, | |
16498 | &show_condition_evaluation_mode, | |
16499 | &breakpoint_set_cmdlist, | |
16500 | &breakpoint_show_cmdlist); | |
16501 | ||
f1310107 TJB |
16502 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
16503 | Set a breakpoint for an address range.\n\ | |
16504 | break-range START-LOCATION, END-LOCATION\n\ | |
16505 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
16506 | LINENUM, for that line in the current file,\n\ | |
16507 | FILE:LINENUM, for that line in that file,\n\ | |
16508 | +OFFSET, for that number of lines after the current line\n\ | |
16509 | or the start of the range\n\ | |
16510 | FUNCTION, for the first line in that function,\n\ | |
16511 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
16512 | *ADDRESS, for the instruction at that address.\n\ | |
16513 | \n\ | |
16514 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
16515 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
16516 | range (including START-LOCATION and END-LOCATION).")); | |
16517 | ||
e7e0cddf SS |
16518 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
16519 | Set a dynamic printf at specified line or function.\n\ | |
16520 | dprintf location,format string,arg1,arg2,...\n\ | |
16521 | location may be a line number, function name, or \"*\" and an address.\n\ | |
16522 | If a line number is specified, break at start of code for that line.\n\ | |
16523 | If a function is specified, break at start of code for that function.\n\ | |
16524 | ")); | |
16525 | set_cmd_completer (c, location_completer); | |
16526 | ||
16527 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
16528 | dprintf_style_enums, &dprintf_style, _("\ | |
16529 | Set the style of usage for dynamic printf."), _("\ | |
16530 | Show the style of usage for dynamic printf."), _("\ | |
16531 | This setting chooses how GDB will do a dynamic printf.\n\ | |
16532 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
16533 | console, as with the \"printf\" command.\n\ | |
16534 | If the value is \"call\", the print is done by calling a function in your\n\ | |
16535 | program; by default printf(), but you can choose a different function or\n\ | |
16536 | output stream by setting dprintf-function and dprintf-channel."), | |
16537 | update_dprintf_commands, NULL, | |
16538 | &setlist, &showlist); | |
16539 | ||
16540 | dprintf_function = xstrdup ("printf"); | |
16541 | add_setshow_string_cmd ("dprintf-function", class_support, | |
16542 | &dprintf_function, _("\ | |
16543 | Set the function to use for dynamic printf"), _("\ | |
16544 | Show the function to use for dynamic printf"), NULL, | |
16545 | update_dprintf_commands, NULL, | |
16546 | &setlist, &showlist); | |
16547 | ||
16548 | dprintf_channel = xstrdup (""); | |
16549 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
16550 | &dprintf_channel, _("\ | |
16551 | Set the channel to use for dynamic printf"), _("\ | |
16552 | Show the channel to use for dynamic printf"), NULL, | |
16553 | update_dprintf_commands, NULL, | |
16554 | &setlist, &showlist); | |
16555 | ||
d3ce09f5 SS |
16556 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
16557 | &disconnected_dprintf, _("\ | |
16558 | Set whether dprintf continues after GDB disconnects."), _("\ | |
16559 | Show whether dprintf continues after GDB disconnects."), _("\ | |
16560 | Use this to let dprintf commands continue to hit and produce output\n\ | |
16561 | even if GDB disconnects or detaches from the target."), | |
16562 | NULL, | |
16563 | NULL, | |
16564 | &setlist, &showlist); | |
16565 | ||
16566 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
16567 | agent-printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
16568 | (target agent only) This is useful for formatted output in user-defined commands.")); | |
16569 | ||
765dc015 | 16570 | automatic_hardware_breakpoints = 1; |
f3b1572e PA |
16571 | |
16572 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
c906108c | 16573 | } |