Commit | Line | Data |
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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
6aba47ca | 3 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
9b254dd1 | 4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, |
4c38e0a4 | 5 | 2008, 2009, 2010 Free Software Foundation, Inc. |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
a6d9a66e | 23 | #include "arch-utils.h" |
c906108c | 24 | #include <ctype.h> |
776592bf | 25 | #include "hashtab.h" |
c906108c SS |
26 | #include "symtab.h" |
27 | #include "frame.h" | |
28 | #include "breakpoint.h" | |
1042e4c0 | 29 | #include "tracepoint.h" |
c906108c SS |
30 | #include "gdbtypes.h" |
31 | #include "expression.h" | |
32 | #include "gdbcore.h" | |
33 | #include "gdbcmd.h" | |
34 | #include "value.h" | |
35 | #include "command.h" | |
36 | #include "inferior.h" | |
37 | #include "gdbthread.h" | |
38 | #include "target.h" | |
39 | #include "language.h" | |
40 | #include "gdb_string.h" | |
41 | #include "demangle.h" | |
42 | #include "annotate.h" | |
43 | #include "symfile.h" | |
44 | #include "objfiles.h" | |
0378c332 | 45 | #include "source.h" |
c5f0f3d0 | 46 | #include "linespec.h" |
c94fdfd0 | 47 | #include "completer.h" |
5b7f31a4 | 48 | #include "gdb.h" |
8b93c638 | 49 | #include "ui-out.h" |
e1507482 | 50 | #include "cli/cli-script.h" |
0225421b | 51 | #include "gdb_assert.h" |
fe898f56 | 52 | #include "block.h" |
a77053c2 | 53 | #include "solib.h" |
84acb35a JJ |
54 | #include "solist.h" |
55 | #include "observer.h" | |
60250e8b | 56 | #include "exceptions.h" |
765dc015 | 57 | #include "memattr.h" |
f7f9143b | 58 | #include "ada-lang.h" |
d1aa2f50 | 59 | #include "top.h" |
fa4727a6 | 60 | #include "wrapper.h" |
79a45b7d | 61 | #include "valprint.h" |
4efc6507 | 62 | #include "jit.h" |
a96d9b2e | 63 | #include "xml-syscall.h" |
c906108c | 64 | |
1042e4c0 SS |
65 | /* readline include files */ |
66 | #include "readline/readline.h" | |
67 | #include "readline/history.h" | |
68 | ||
69 | /* readline defines this. */ | |
70 | #undef savestring | |
71 | ||
034dad6f | 72 | #include "mi/mi-common.h" |
104c1213 | 73 | |
44feb3ce TT |
74 | /* Arguments to pass as context to some catch command handlers. */ |
75 | #define CATCH_PERMANENT ((void *) (uintptr_t) 0) | |
76 | #define CATCH_TEMPORARY ((void *) (uintptr_t) 1) | |
c906108c | 77 | |
44feb3ce | 78 | /* Prototypes for local functions. */ |
c906108c | 79 | |
a14ed312 | 80 | static void enable_delete_command (char *, int); |
c906108c | 81 | |
a14ed312 | 82 | static void enable_once_command (char *, int); |
c906108c | 83 | |
a14ed312 | 84 | static void disable_command (char *, int); |
c906108c | 85 | |
a14ed312 | 86 | static void enable_command (char *, int); |
c906108c | 87 | |
95a42b64 TT |
88 | static void map_breakpoint_numbers (char *, void (*) (struct breakpoint *, |
89 | void *), | |
90 | void *); | |
c906108c | 91 | |
a14ed312 | 92 | static void ignore_command (char *, int); |
c906108c | 93 | |
4efb68b1 | 94 | static int breakpoint_re_set_one (void *); |
c906108c | 95 | |
a14ed312 | 96 | static void clear_command (char *, int); |
c906108c | 97 | |
a14ed312 | 98 | static void catch_command (char *, int); |
c906108c | 99 | |
a14ed312 | 100 | static void watch_command (char *, int); |
c906108c | 101 | |
a14ed312 | 102 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 103 | |
98deb0da | 104 | static void break_command_1 (char *, int, int); |
c906108c | 105 | |
a14ed312 | 106 | static void mention (struct breakpoint *); |
c906108c | 107 | |
63c252f8 PM |
108 | /* This function is used in gdbtk sources and thus can not be made static. */ |
109 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, | |
a6d9a66e UW |
110 | struct symtab_and_line, |
111 | enum bptype); | |
c906108c | 112 | |
76897487 KB |
113 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
114 | ||
a6d9a66e UW |
115 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
116 | CORE_ADDR bpaddr, | |
88f7da05 | 117 | enum bptype bptype); |
76897487 | 118 | |
6c95b8df PA |
119 | static void describe_other_breakpoints (struct gdbarch *, |
120 | struct program_space *, CORE_ADDR, | |
5af949e3 | 121 | struct obj_section *, int); |
c906108c | 122 | |
6c95b8df PA |
123 | static int breakpoint_address_match (struct address_space *aspace1, |
124 | CORE_ADDR addr1, | |
125 | struct address_space *aspace2, | |
126 | CORE_ADDR addr2); | |
127 | ||
85d721b8 PA |
128 | static int watchpoint_locations_match (struct bp_location *loc1, |
129 | struct bp_location *loc2); | |
130 | ||
a14ed312 | 131 | static void breakpoints_info (char *, int); |
c906108c | 132 | |
a14ed312 | 133 | static void breakpoint_1 (int, int); |
c906108c | 134 | |
89f9893c | 135 | static bpstat bpstat_alloc (const struct bp_location *, bpstat); |
c906108c | 136 | |
4efb68b1 | 137 | static int breakpoint_cond_eval (void *); |
c906108c | 138 | |
4efb68b1 | 139 | static void cleanup_executing_breakpoints (void *); |
c906108c | 140 | |
a14ed312 | 141 | static void commands_command (char *, int); |
c906108c | 142 | |
a14ed312 | 143 | static void condition_command (char *, int); |
c906108c | 144 | |
a14ed312 | 145 | static int get_number_trailer (char **, int); |
c906108c | 146 | |
c5aa993b JM |
147 | typedef enum |
148 | { | |
149 | mark_inserted, | |
150 | mark_uninserted | |
151 | } | |
152 | insertion_state_t; | |
c906108c | 153 | |
0bde7532 | 154 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
6c95b8df | 155 | static int remove_breakpoint_1 (struct bp_location *, insertion_state_t); |
c906108c | 156 | |
a14ed312 | 157 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
158 | |
159 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 160 | |
4efb68b1 | 161 | static int watchpoint_check (void *); |
c906108c | 162 | |
a14ed312 | 163 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 164 | |
a14ed312 | 165 | static int hw_breakpoint_used_count (void); |
c906108c | 166 | |
a14ed312 | 167 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 168 | |
a14ed312 | 169 | static void hbreak_command (char *, int); |
c906108c | 170 | |
a14ed312 | 171 | static void thbreak_command (char *, int); |
c906108c | 172 | |
a14ed312 | 173 | static void watch_command_1 (char *, int, int); |
c906108c | 174 | |
a14ed312 | 175 | static void rwatch_command (char *, int); |
c906108c | 176 | |
a14ed312 | 177 | static void awatch_command (char *, int); |
c906108c | 178 | |
a14ed312 | 179 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 180 | |
a14ed312 | 181 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 182 | |
a14ed312 | 183 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 184 | |
a14ed312 | 185 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 186 | |
a14ed312 | 187 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 188 | |
d85310f7 MS |
189 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
190 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 191 | |
a14ed312 | 192 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 193 | |
a14ed312 | 194 | static void ep_skip_leading_whitespace (char **s); |
7a292a7a | 195 | |
6c95b8df PA |
196 | static int single_step_breakpoint_inserted_here_p (struct address_space *, |
197 | CORE_ADDR pc); | |
1aafd4da | 198 | |
fe3f5fa8 VP |
199 | static void free_bp_location (struct bp_location *loc); |
200 | ||
39d61571 | 201 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 202 | |
b60e7edf | 203 | static void update_global_location_list (int); |
a5606eee | 204 | |
b60e7edf | 205 | static void update_global_location_list_nothrow (int); |
74960c60 VP |
206 | |
207 | static int is_hardware_watchpoint (struct breakpoint *bpt); | |
208 | ||
60e1c644 PA |
209 | static int is_watchpoint (struct breakpoint *bpt); |
210 | ||
74960c60 | 211 | static void insert_breakpoint_locations (void); |
a5606eee | 212 | |
a96d9b2e SDJ |
213 | static int syscall_catchpoint_p (struct breakpoint *b); |
214 | ||
1042e4c0 SS |
215 | static void tracepoints_info (char *, int); |
216 | ||
217 | static void delete_trace_command (char *, int); | |
218 | ||
219 | static void enable_trace_command (char *, int); | |
220 | ||
221 | static void disable_trace_command (char *, int); | |
222 | ||
223 | static void trace_pass_command (char *, int); | |
224 | ||
3daf8fe5 | 225 | |
f3b1572e PA |
226 | /* Flag indicating that a command has proceeded the inferior past the |
227 | current breakpoint. */ | |
228 | ||
229 | static int breakpoint_proceeded; | |
230 | ||
2cec12e5 AR |
231 | static const char * |
232 | bpdisp_text (enum bpdisp disp) | |
233 | { | |
234 | /* NOTE: the following values are a part of MI protocol and represent | |
235 | values of 'disp' field returned when inferior stops at a breakpoint. */ | |
236 | static char *bpdisps[] = {"del", "dstp", "dis", "keep"}; | |
237 | return bpdisps[(int) disp]; | |
238 | } | |
c906108c | 239 | |
2cec12e5 | 240 | /* Prototypes for exported functions. */ |
c906108c SS |
241 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
242 | if such is available. */ | |
243 | static int can_use_hw_watchpoints; | |
244 | ||
920d2a44 AC |
245 | static void |
246 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
247 | struct cmd_list_element *c, | |
248 | const char *value) | |
249 | { | |
250 | fprintf_filtered (file, _("\ | |
251 | Debugger's willingness to use watchpoint hardware is %s.\n"), | |
252 | value); | |
253 | } | |
254 | ||
fa8d40ab JJ |
255 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
256 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
257 | for unrecognized breakpoint locations. | |
258 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ | |
259 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
260 | static void |
261 | show_pending_break_support (struct ui_file *file, int from_tty, | |
262 | struct cmd_list_element *c, | |
263 | const char *value) | |
264 | { | |
265 | fprintf_filtered (file, _("\ | |
266 | Debugger's behavior regarding pending breakpoints is %s.\n"), | |
267 | value); | |
268 | } | |
fa8d40ab | 269 | |
765dc015 VP |
270 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
271 | set with "break" but falling in read-only memory. | |
272 | If 0, gdb will warn about such breakpoints, but won't automatically | |
273 | use hardware breakpoints. */ | |
274 | static int automatic_hardware_breakpoints; | |
275 | static void | |
276 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
277 | struct cmd_list_element *c, | |
278 | const char *value) | |
279 | { | |
280 | fprintf_filtered (file, _("\ | |
281 | Automatic usage of hardware breakpoints is %s.\n"), | |
282 | value); | |
283 | } | |
284 | ||
33e5cbd6 PA |
285 | /* If on, gdb will keep breakpoints inserted even as inferior is |
286 | stopped, and immediately insert any new breakpoints. If off, gdb | |
287 | will insert breakpoints into inferior only when resuming it, and | |
288 | will remove breakpoints upon stop. If auto, GDB will behave as ON | |
289 | if in non-stop mode, and as OFF if all-stop mode.*/ | |
290 | ||
291 | static const char always_inserted_auto[] = "auto"; | |
292 | static const char always_inserted_on[] = "on"; | |
293 | static const char always_inserted_off[] = "off"; | |
294 | static const char *always_inserted_enums[] = { | |
295 | always_inserted_auto, | |
296 | always_inserted_off, | |
297 | always_inserted_on, | |
298 | NULL | |
299 | }; | |
300 | static const char *always_inserted_mode = always_inserted_auto; | |
301 | static void | |
74960c60 | 302 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 303 | struct cmd_list_element *c, const char *value) |
74960c60 | 304 | { |
33e5cbd6 PA |
305 | if (always_inserted_mode == always_inserted_auto) |
306 | fprintf_filtered (file, _("\ | |
307 | Always inserted breakpoint mode is %s (currently %s).\n"), | |
308 | value, | |
309 | breakpoints_always_inserted_mode () ? "on" : "off"); | |
310 | else | |
311 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), value); | |
74960c60 VP |
312 | } |
313 | ||
33e5cbd6 PA |
314 | int |
315 | breakpoints_always_inserted_mode (void) | |
316 | { | |
317 | return (always_inserted_mode == always_inserted_on | |
318 | || (always_inserted_mode == always_inserted_auto && non_stop)); | |
319 | } | |
765dc015 | 320 | |
a14ed312 | 321 | void _initialize_breakpoint (void); |
c906108c | 322 | |
c906108c SS |
323 | /* Are we executing breakpoint commands? */ |
324 | static int executing_breakpoint_commands; | |
325 | ||
c02f5703 MS |
326 | /* Are overlay event breakpoints enabled? */ |
327 | static int overlay_events_enabled; | |
328 | ||
c906108c SS |
329 | /* Walk the following statement or block through all breakpoints. |
330 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
331 | breakpoint. */ | |
332 | ||
5c44784c | 333 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 334 | |
5c44784c JM |
335 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
336 | for (B = breakpoint_chain; \ | |
337 | B ? (TMP=B->next, 1): 0; \ | |
338 | B = TMP) | |
c906108c | 339 | |
876fa593 JK |
340 | /* Similar iterator for the low-level breakpoints. SAFE variant is not |
341 | provided so update_global_location_list must not be called while executing | |
342 | the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 343 | |
876fa593 JK |
344 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
345 | for (BP_TMP = bp_location; \ | |
346 | BP_TMP < bp_location + bp_location_count && (B = *BP_TMP); \ | |
347 | BP_TMP++) | |
7cc221ef | 348 | |
1042e4c0 SS |
349 | /* Iterator for tracepoints only. */ |
350 | ||
351 | #define ALL_TRACEPOINTS(B) \ | |
352 | for (B = breakpoint_chain; B; B = B->next) \ | |
7a697b8d | 353 | if (tracepoint_type (B)) |
1042e4c0 | 354 | |
7cc221ef | 355 | /* Chains of all breakpoints defined. */ |
c906108c SS |
356 | |
357 | struct breakpoint *breakpoint_chain; | |
358 | ||
876fa593 JK |
359 | /* Array is sorted by bp_location_compare - primarily by the ADDRESS. */ |
360 | ||
361 | static struct bp_location **bp_location; | |
362 | ||
363 | /* Number of elements of BP_LOCATION. */ | |
364 | ||
365 | static unsigned bp_location_count; | |
366 | ||
367 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and ADDRESS | |
368 | for the current elements of BP_LOCATION which get a valid result from | |
369 | bp_location_has_shadow. You can use it for roughly limiting the subrange of | |
370 | BP_LOCATION to scan for shadow bytes for an address you need to read. */ | |
371 | ||
372 | static CORE_ADDR bp_location_placed_address_before_address_max; | |
373 | ||
374 | /* Maximum offset plus alignment between | |
375 | bp_target_info.PLACED_ADDRESS + bp_target_info.SHADOW_LEN and ADDRESS for | |
376 | the current elements of BP_LOCATION which get a valid result from | |
377 | bp_location_has_shadow. You can use it for roughly limiting the subrange of | |
378 | BP_LOCATION to scan for shadow bytes for an address you need to read. */ | |
379 | ||
380 | static CORE_ADDR bp_location_shadow_len_after_address_max; | |
7cc221ef | 381 | |
20874c92 | 382 | /* The locations that no longer correspond to any breakpoint, |
876fa593 | 383 | unlinked from bp_location array, but for which a hit |
20874c92 VP |
384 | may still be reported by a target. */ |
385 | VEC(bp_location_p) *moribund_locations = NULL; | |
386 | ||
c906108c SS |
387 | /* Number of last breakpoint made. */ |
388 | ||
95a42b64 TT |
389 | static int breakpoint_count; |
390 | ||
86b17b60 PA |
391 | /* The value of `breakpoint_count' before the last command that |
392 | created breakpoints. If the last (break-like) command created more | |
393 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
394 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
395 | static int prev_breakpoint_count; | |
c906108c | 396 | |
1042e4c0 SS |
397 | /* Number of last tracepoint made. */ |
398 | ||
95a42b64 | 399 | static int tracepoint_count; |
1042e4c0 | 400 | |
468d015d JJ |
401 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
402 | static int | |
403 | breakpoint_enabled (struct breakpoint *b) | |
404 | { | |
0d381245 | 405 | return (b->enable_state == bp_enabled); |
468d015d JJ |
406 | } |
407 | ||
c906108c SS |
408 | /* Set breakpoint count to NUM. */ |
409 | ||
95a42b64 | 410 | static void |
fba45db2 | 411 | set_breakpoint_count (int num) |
c906108c | 412 | { |
86b17b60 | 413 | prev_breakpoint_count = breakpoint_count; |
c906108c | 414 | breakpoint_count = num; |
4fa62494 | 415 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
416 | } |
417 | ||
86b17b60 PA |
418 | /* Used by `start_rbreak_breakpoints' below, to record the current |
419 | breakpoint count before "rbreak" creates any breakpoint. */ | |
420 | static int rbreak_start_breakpoint_count; | |
421 | ||
95a42b64 TT |
422 | /* Called at the start an "rbreak" command to record the first |
423 | breakpoint made. */ | |
86b17b60 | 424 | |
95a42b64 TT |
425 | void |
426 | start_rbreak_breakpoints (void) | |
427 | { | |
86b17b60 | 428 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
429 | } |
430 | ||
431 | /* Called at the end of an "rbreak" command to record the last | |
432 | breakpoint made. */ | |
86b17b60 | 433 | |
95a42b64 TT |
434 | void |
435 | end_rbreak_breakpoints (void) | |
436 | { | |
86b17b60 | 437 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
438 | } |
439 | ||
c906108c SS |
440 | /* Used in run_command to zero the hit count when a new run starts. */ |
441 | ||
442 | void | |
fba45db2 | 443 | clear_breakpoint_hit_counts (void) |
c906108c SS |
444 | { |
445 | struct breakpoint *b; | |
446 | ||
447 | ALL_BREAKPOINTS (b) | |
448 | b->hit_count = 0; | |
449 | } | |
450 | ||
7a697b8d SS |
451 | /* Encapsulate tests for different types of tracepoints. */ |
452 | ||
453 | static int | |
454 | tracepoint_type (const struct breakpoint *b) | |
455 | { | |
456 | return (b->type == bp_tracepoint || b->type == bp_fast_tracepoint); | |
457 | } | |
458 | ||
9add0f1b TT |
459 | /* Allocate a new counted_command_line with reference count of 1. |
460 | The new structure owns COMMANDS. */ | |
461 | ||
462 | static struct counted_command_line * | |
463 | alloc_counted_command_line (struct command_line *commands) | |
464 | { | |
465 | struct counted_command_line *result | |
466 | = xmalloc (sizeof (struct counted_command_line)); | |
467 | result->refc = 1; | |
468 | result->commands = commands; | |
469 | return result; | |
470 | } | |
471 | ||
472 | /* Increment reference count. This does nothing if CMD is NULL. */ | |
473 | ||
474 | static void | |
475 | incref_counted_command_line (struct counted_command_line *cmd) | |
476 | { | |
477 | if (cmd) | |
478 | ++cmd->refc; | |
479 | } | |
480 | ||
481 | /* Decrement reference count. If the reference count reaches 0, | |
482 | destroy the counted_command_line. Sets *CMDP to NULL. This does | |
483 | nothing if *CMDP is NULL. */ | |
484 | ||
485 | static void | |
486 | decref_counted_command_line (struct counted_command_line **cmdp) | |
487 | { | |
488 | if (*cmdp) | |
489 | { | |
490 | if (--(*cmdp)->refc == 0) | |
491 | { | |
492 | free_command_lines (&(*cmdp)->commands); | |
493 | xfree (*cmdp); | |
494 | } | |
495 | *cmdp = NULL; | |
496 | } | |
497 | } | |
498 | ||
499 | /* A cleanup function that calls decref_counted_command_line. */ | |
500 | ||
501 | static void | |
502 | do_cleanup_counted_command_line (void *arg) | |
503 | { | |
504 | decref_counted_command_line (arg); | |
505 | } | |
506 | ||
507 | /* Create a cleanup that calls decref_counted_command_line on the | |
508 | argument. */ | |
509 | ||
510 | static struct cleanup * | |
511 | make_cleanup_decref_counted_command_line (struct counted_command_line **cmdp) | |
512 | { | |
513 | return make_cleanup (do_cleanup_counted_command_line, cmdp); | |
514 | } | |
515 | ||
c906108c SS |
516 | /* Default address, symtab and line to put a breakpoint at |
517 | for "break" command with no arg. | |
518 | if default_breakpoint_valid is zero, the other three are | |
519 | not valid, and "break" with no arg is an error. | |
520 | ||
521 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
522 | ||
523 | int default_breakpoint_valid; | |
524 | CORE_ADDR default_breakpoint_address; | |
525 | struct symtab *default_breakpoint_symtab; | |
526 | int default_breakpoint_line; | |
6c95b8df PA |
527 | struct program_space *default_breakpoint_pspace; |
528 | ||
c906108c SS |
529 | \f |
530 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
531 | Advance *PP after the string and any trailing whitespace. | |
532 | ||
533 | Currently the string can either be a number or "$" followed by the name | |
534 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c | 535 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
40c03ae8 EZ |
536 | |
537 | If the string is a NULL pointer, that denotes the last breakpoint. | |
5c44784c JM |
538 | |
539 | TRAILER is a character which can be found after the number; most | |
540 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 541 | static int |
fba45db2 | 542 | get_number_trailer (char **pp, int trailer) |
c906108c | 543 | { |
5c44784c | 544 | int retval = 0; /* default */ |
c906108c SS |
545 | char *p = *pp; |
546 | ||
547 | if (p == NULL) | |
548 | /* Empty line means refer to the last breakpoint. */ | |
549 | return breakpoint_count; | |
550 | else if (*p == '$') | |
551 | { | |
552 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 553 | to pass to lookup_internalvar(). */ |
c906108c SS |
554 | char *varname; |
555 | char *start = ++p; | |
4fa62494 | 556 | LONGEST val; |
c906108c SS |
557 | |
558 | while (isalnum (*p) || *p == '_') | |
559 | p++; | |
560 | varname = (char *) alloca (p - start + 1); | |
561 | strncpy (varname, start, p - start); | |
562 | varname[p - start] = '\0'; | |
4fa62494 UW |
563 | if (get_internalvar_integer (lookup_internalvar (varname), &val)) |
564 | retval = (int) val; | |
5c44784c JM |
565 | else |
566 | { | |
a3f17187 | 567 | printf_filtered (_("Convenience variable must have integer value.\n")); |
5c44784c JM |
568 | retval = 0; |
569 | } | |
c906108c SS |
570 | } |
571 | else | |
572 | { | |
573 | if (*p == '-') | |
574 | ++p; | |
575 | while (*p >= '0' && *p <= '9') | |
576 | ++p; | |
577 | if (p == *pp) | |
578 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
579 | { |
580 | /* Skip non-numeric token */ | |
581 | while (*p && !isspace((int) *p)) | |
582 | ++p; | |
583 | /* Return zero, which caller must interpret as error. */ | |
584 | retval = 0; | |
585 | } | |
586 | else | |
587 | retval = atoi (*pp); | |
588 | } | |
589 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
590 | { | |
591 | /* Trailing junk: return 0 and let caller print error msg. */ | |
592 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
593 | ++p; | |
594 | retval = 0; | |
c906108c | 595 | } |
c906108c SS |
596 | while (isspace (*p)) |
597 | p++; | |
598 | *pp = p; | |
599 | return retval; | |
600 | } | |
5c44784c | 601 | |
11cf8741 | 602 | |
5c44784c JM |
603 | /* Like get_number_trailer, but don't allow a trailer. */ |
604 | int | |
fba45db2 | 605 | get_number (char **pp) |
5c44784c JM |
606 | { |
607 | return get_number_trailer (pp, '\0'); | |
608 | } | |
609 | ||
610 | /* Parse a number or a range. | |
611 | * A number will be of the form handled by get_number. | |
612 | * A range will be of the form <number1> - <number2>, and | |
613 | * will represent all the integers between number1 and number2, | |
614 | * inclusive. | |
615 | * | |
616 | * While processing a range, this fuction is called iteratively; | |
617 | * At each call it will return the next value in the range. | |
618 | * | |
619 | * At the beginning of parsing a range, the char pointer PP will | |
620 | * be advanced past <number1> and left pointing at the '-' token. | |
621 | * Subsequent calls will not advance the pointer until the range | |
622 | * is completed. The call that completes the range will advance | |
623 | * pointer PP past <number2>. | |
624 | */ | |
625 | ||
626 | int | |
fba45db2 | 627 | get_number_or_range (char **pp) |
5c44784c JM |
628 | { |
629 | static int last_retval, end_value; | |
630 | static char *end_ptr; | |
631 | static int in_range = 0; | |
632 | ||
633 | if (**pp != '-') | |
634 | { | |
635 | /* Default case: pp is pointing either to a solo number, | |
636 | or to the first number of a range. */ | |
637 | last_retval = get_number_trailer (pp, '-'); | |
638 | if (**pp == '-') | |
639 | { | |
640 | char **temp; | |
641 | ||
642 | /* This is the start of a range (<number1> - <number2>). | |
643 | Skip the '-', parse and remember the second number, | |
644 | and also remember the end of the final token. */ | |
645 | ||
646 | temp = &end_ptr; | |
647 | end_ptr = *pp + 1; | |
648 | while (isspace ((int) *end_ptr)) | |
649 | end_ptr++; /* skip white space */ | |
650 | end_value = get_number (temp); | |
651 | if (end_value < last_retval) | |
652 | { | |
8a3fe4f8 | 653 | error (_("inverted range")); |
5c44784c JM |
654 | } |
655 | else if (end_value == last_retval) | |
656 | { | |
657 | /* degenerate range (number1 == number2). Advance the | |
658 | token pointer so that the range will be treated as a | |
659 | single number. */ | |
660 | *pp = end_ptr; | |
661 | } | |
662 | else | |
663 | in_range = 1; | |
664 | } | |
665 | } | |
666 | else if (! in_range) | |
8a3fe4f8 | 667 | error (_("negative value")); |
5c44784c JM |
668 | else |
669 | { | |
670 | /* pp points to the '-' that betokens a range. All | |
671 | number-parsing has already been done. Return the next | |
672 | integer value (one greater than the saved previous value). | |
673 | Do not advance the token pointer 'pp' until the end of range | |
674 | is reached. */ | |
675 | ||
676 | if (++last_retval == end_value) | |
677 | { | |
678 | /* End of range reached; advance token pointer. */ | |
679 | *pp = end_ptr; | |
680 | in_range = 0; | |
681 | } | |
682 | } | |
683 | return last_retval; | |
684 | } | |
685 | ||
48cb2d85 VP |
686 | /* Return the breakpoint with the specified number, or NULL |
687 | if the number does not refer to an existing breakpoint. */ | |
688 | ||
689 | struct breakpoint * | |
690 | get_breakpoint (int num) | |
691 | { | |
692 | struct breakpoint *b; | |
693 | ||
694 | ALL_BREAKPOINTS (b) | |
695 | if (b->number == num) | |
696 | return b; | |
697 | ||
698 | return NULL; | |
699 | } | |
5c44784c | 700 | |
c906108c SS |
701 | \f |
702 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
703 | ||
704 | static void | |
fba45db2 | 705 | condition_command (char *arg, int from_tty) |
c906108c | 706 | { |
52f0bd74 | 707 | struct breakpoint *b; |
c906108c | 708 | char *p; |
52f0bd74 | 709 | int bnum; |
c906108c SS |
710 | |
711 | if (arg == 0) | |
e2e0b3e5 | 712 | error_no_arg (_("breakpoint number")); |
c906108c SS |
713 | |
714 | p = arg; | |
715 | bnum = get_number (&p); | |
5c44784c | 716 | if (bnum == 0) |
8a3fe4f8 | 717 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
718 | |
719 | ALL_BREAKPOINTS (b) | |
720 | if (b->number == bnum) | |
2f069f6f JB |
721 | { |
722 | struct bp_location *loc = b->loc; | |
723 | for (; loc; loc = loc->next) | |
724 | { | |
60e1c644 PA |
725 | xfree (loc->cond); |
726 | loc->cond = NULL; | |
2f069f6f | 727 | } |
60e1c644 PA |
728 | xfree (b->cond_string); |
729 | b->cond_string = NULL; | |
730 | xfree (b->cond_exp); | |
731 | b->cond_exp = NULL; | |
c906108c | 732 | |
2f069f6f JB |
733 | if (*p == 0) |
734 | { | |
2f069f6f JB |
735 | if (from_tty) |
736 | printf_filtered (_("Breakpoint %d now unconditional.\n"), bnum); | |
737 | } | |
738 | else | |
739 | { | |
740 | arg = p; | |
741 | /* I don't know if it matters whether this is the string the user | |
742 | typed in or the decompiled expression. */ | |
1b36a34b | 743 | b->cond_string = xstrdup (arg); |
2f069f6f | 744 | b->condition_not_parsed = 0; |
60e1c644 PA |
745 | |
746 | if (is_watchpoint (b)) | |
2f069f6f | 747 | { |
60e1c644 | 748 | innermost_block = NULL; |
2f069f6f | 749 | arg = p; |
60e1c644 | 750 | b->cond_exp = parse_exp_1 (&arg, 0, 0); |
2f069f6f JB |
751 | if (*arg) |
752 | error (_("Junk at end of expression")); | |
60e1c644 PA |
753 | b->cond_exp_valid_block = innermost_block; |
754 | } | |
755 | else | |
756 | { | |
757 | for (loc = b->loc; loc; loc = loc->next) | |
758 | { | |
759 | arg = p; | |
760 | loc->cond = | |
761 | parse_exp_1 (&arg, block_for_pc (loc->address), 0); | |
762 | if (*arg) | |
763 | error (_("Junk at end of expression")); | |
764 | } | |
2f069f6f JB |
765 | } |
766 | } | |
767 | breakpoints_changed (); | |
383f836e | 768 | observer_notify_breakpoint_modified (b->number); |
2f069f6f JB |
769 | return; |
770 | } | |
c906108c | 771 | |
8a3fe4f8 | 772 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
773 | } |
774 | ||
a7bdde9e VP |
775 | /* Check that COMMAND do not contain commands that are suitable |
776 | only for tracepoints and not suitable for ordinary breakpoints. | |
777 | Throw if any such commands is found. | |
778 | */ | |
779 | static void | |
780 | check_no_tracepoint_commands (struct command_line *commands) | |
781 | { | |
782 | struct command_line *c; | |
783 | for (c = commands; c; c = c->next) | |
784 | { | |
785 | int i; | |
786 | ||
787 | if (c->control_type == while_stepping_control) | |
788 | error (_("The 'while-stepping' command can only be used for tracepoints")); | |
789 | ||
790 | for (i = 0; i < c->body_count; ++i) | |
791 | check_no_tracepoint_commands ((c->body_list)[i]); | |
792 | ||
793 | /* Not that command parsing removes leading whitespace and comment | |
794 | lines and also empty lines. So, we only need to check for | |
795 | command directly. */ | |
796 | if (strstr (c->line, "collect ") == c->line) | |
797 | error (_("The 'collect' command can only be used for tracepoints")); | |
798 | ||
51661e93 VP |
799 | if (strstr (c->line, "teval ") == c->line) |
800 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
801 | } |
802 | } | |
803 | ||
804 | int | |
805 | breakpoint_is_tracepoint (const struct breakpoint *b) | |
806 | { | |
807 | switch (b->type) | |
808 | { | |
809 | case bp_tracepoint: | |
810 | case bp_fast_tracepoint: | |
811 | return 1; | |
812 | default: | |
813 | return 0; | |
814 | ||
815 | } | |
816 | } | |
817 | ||
95a42b64 TT |
818 | /* A helper function that validsates that COMMANDS are valid for a |
819 | breakpoint. This function will throw an exception if a problem is | |
820 | found. */ | |
48cb2d85 | 821 | |
95a42b64 TT |
822 | static void |
823 | validate_commands_for_breakpoint (struct breakpoint *b, | |
824 | struct command_line *commands) | |
48cb2d85 | 825 | { |
a7bdde9e VP |
826 | if (breakpoint_is_tracepoint (b)) |
827 | { | |
828 | /* We need to verify that each top-level element of commands | |
829 | is valid for tracepoints, that there's at most one while-stepping | |
830 | element, and that while-stepping's body has valid tracing commands | |
831 | excluding nested while-stepping. */ | |
832 | struct command_line *c; | |
833 | struct command_line *while_stepping = 0; | |
834 | for (c = commands; c; c = c->next) | |
835 | { | |
836 | char *l = c->line; | |
837 | if (c->control_type == while_stepping_control) | |
838 | { | |
839 | if (b->type == bp_fast_tracepoint) | |
840 | error (_("The 'while-stepping' command cannot be used for fast tracepoint")); | |
841 | ||
842 | if (while_stepping) | |
843 | error (_("The 'while-stepping' command can be used only once")); | |
844 | else | |
845 | while_stepping = c; | |
846 | } | |
847 | } | |
848 | if (while_stepping) | |
849 | { | |
850 | struct command_line *c2; | |
851 | ||
852 | gdb_assert (while_stepping->body_count == 1); | |
853 | c2 = while_stepping->body_list[0]; | |
854 | for (; c2; c2 = c2->next) | |
855 | { | |
856 | char *l = c2->line; | |
857 | if (c2->control_type == while_stepping_control) | |
858 | error (_("The 'while-stepping' command cannot be nested")); | |
859 | } | |
860 | } | |
861 | } | |
862 | else | |
863 | { | |
864 | check_no_tracepoint_commands (commands); | |
865 | } | |
95a42b64 TT |
866 | } |
867 | ||
868 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, | |
869 | validate that only allowed commands are included. | |
870 | */ | |
871 | ||
872 | void | |
873 | breakpoint_set_commands (struct breakpoint *b, struct command_line *commands) | |
874 | { | |
875 | validate_commands_for_breakpoint (b, commands); | |
a7bdde9e | 876 | |
9add0f1b TT |
877 | decref_counted_command_line (&b->commands); |
878 | b->commands = alloc_counted_command_line (commands); | |
48cb2d85 VP |
879 | breakpoints_changed (); |
880 | observer_notify_breakpoint_modified (b->number); | |
881 | } | |
882 | ||
95a42b64 TT |
883 | void |
884 | check_tracepoint_command (char *line, void *closure) | |
a7bdde9e VP |
885 | { |
886 | struct breakpoint *b = closure; | |
887 | validate_actionline (&line, b); | |
888 | } | |
889 | ||
95a42b64 TT |
890 | /* A structure used to pass information through |
891 | map_breakpoint_numbers. */ | |
892 | ||
893 | struct commands_info | |
894 | { | |
895 | /* True if the command was typed at a tty. */ | |
896 | int from_tty; | |
86b17b60 PA |
897 | |
898 | /* The breakpoint range spec. */ | |
899 | char *arg; | |
900 | ||
95a42b64 TT |
901 | /* Non-NULL if the body of the commands are being read from this |
902 | already-parsed command. */ | |
903 | struct command_line *control; | |
86b17b60 | 904 | |
95a42b64 TT |
905 | /* The command lines read from the user, or NULL if they have not |
906 | yet been read. */ | |
907 | struct counted_command_line *cmd; | |
908 | }; | |
909 | ||
910 | /* A callback for map_breakpoint_numbers that sets the commands for | |
911 | commands_command. */ | |
912 | ||
c906108c | 913 | static void |
95a42b64 | 914 | do_map_commands_command (struct breakpoint *b, void *data) |
c906108c | 915 | { |
95a42b64 | 916 | struct commands_info *info = data; |
c906108c | 917 | |
95a42b64 TT |
918 | if (info->cmd == NULL) |
919 | { | |
920 | struct command_line *l; | |
5c44784c | 921 | |
95a42b64 TT |
922 | if (info->control != NULL) |
923 | l = copy_command_lines (info->control->body_list[0]); | |
924 | else | |
86b17b60 PA |
925 | { |
926 | struct cleanup *old_chain; | |
927 | char *str; | |
c5aa993b | 928 | |
86b17b60 PA |
929 | str = xstrprintf (_("Type commands for breakpoint(s) %s, one per line."), |
930 | info->arg); | |
931 | ||
932 | old_chain = make_cleanup (xfree, str); | |
933 | ||
934 | l = read_command_lines (str, | |
935 | info->from_tty, 1, | |
936 | (breakpoint_is_tracepoint (b) | |
937 | ? check_tracepoint_command : 0), | |
938 | b); | |
939 | ||
940 | do_cleanups (old_chain); | |
941 | } | |
a7bdde9e | 942 | |
95a42b64 TT |
943 | info->cmd = alloc_counted_command_line (l); |
944 | } | |
945 | ||
946 | /* If a breakpoint was on the list more than once, we don't need to | |
947 | do anything. */ | |
948 | if (b->commands != info->cmd) | |
949 | { | |
950 | validate_commands_for_breakpoint (b, info->cmd->commands); | |
951 | incref_counted_command_line (info->cmd); | |
952 | decref_counted_command_line (&b->commands); | |
953 | b->commands = info->cmd; | |
954 | breakpoints_changed (); | |
955 | observer_notify_breakpoint_modified (b->number); | |
c5aa993b | 956 | } |
95a42b64 TT |
957 | } |
958 | ||
959 | static void | |
960 | commands_command_1 (char *arg, int from_tty, struct command_line *control) | |
961 | { | |
962 | struct cleanup *cleanups; | |
963 | struct commands_info info; | |
964 | ||
965 | info.from_tty = from_tty; | |
966 | info.control = control; | |
967 | info.cmd = NULL; | |
968 | /* If we read command lines from the user, then `info' will hold an | |
969 | extra reference to the commands that we must clean up. */ | |
970 | cleanups = make_cleanup_decref_counted_command_line (&info.cmd); | |
971 | ||
972 | if (arg == NULL || !*arg) | |
973 | { | |
86b17b60 PA |
974 | if (breakpoint_count - prev_breakpoint_count > 1) |
975 | arg = xstrprintf ("%d-%d", prev_breakpoint_count + 1, breakpoint_count); | |
95a42b64 TT |
976 | else if (breakpoint_count > 0) |
977 | arg = xstrprintf ("%d", breakpoint_count); | |
86b17b60 PA |
978 | else |
979 | { | |
980 | /* So that we don't try to free the incoming non-NULL | |
981 | argument in the cleanup below. Mapping breakpoint | |
982 | numbers will fail in this case. */ | |
983 | arg = NULL; | |
984 | } | |
95a42b64 | 985 | } |
9766ced4 SS |
986 | else |
987 | /* The command loop has some static state, so we need to preserve | |
988 | our argument. */ | |
989 | arg = xstrdup (arg); | |
86b17b60 PA |
990 | |
991 | if (arg != NULL) | |
992 | make_cleanup (xfree, arg); | |
993 | ||
994 | info.arg = arg; | |
95a42b64 TT |
995 | |
996 | map_breakpoint_numbers (arg, do_map_commands_command, &info); | |
997 | ||
998 | if (info.cmd == NULL) | |
999 | error (_("No breakpoints specified.")); | |
1000 | ||
1001 | do_cleanups (cleanups); | |
1002 | } | |
1003 | ||
1004 | static void | |
1005 | commands_command (char *arg, int from_tty) | |
1006 | { | |
1007 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1008 | } |
40c03ae8 EZ |
1009 | |
1010 | /* Like commands_command, but instead of reading the commands from | |
1011 | input stream, takes them from an already parsed command structure. | |
1012 | ||
1013 | This is used by cli-script.c to DTRT with breakpoint commands | |
1014 | that are part of if and while bodies. */ | |
1015 | enum command_control_type | |
1016 | commands_from_control_command (char *arg, struct command_line *cmd) | |
1017 | { | |
95a42b64 TT |
1018 | commands_command_1 (arg, 0, cmd); |
1019 | return simple_control; | |
40c03ae8 | 1020 | } |
876fa593 JK |
1021 | |
1022 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1023 | ||
1024 | static int | |
1025 | bp_location_has_shadow (struct bp_location *bl) | |
1026 | { | |
1027 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1028 | return 0; | |
1029 | if (!bl->inserted) | |
1030 | return 0; | |
1031 | if (bl->target_info.shadow_len == 0) | |
1032 | /* bp isn't valid, or doesn't shadow memory. */ | |
1033 | return 0; | |
1034 | return 1; | |
1035 | } | |
1036 | ||
8defab1a | 1037 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1038 | by replacing any memory breakpoints with their shadowed contents. |
1039 | ||
1040 | The range of shadowed area by each bp_location is: | |
1041 | b->address - bp_location_placed_address_before_address_max | |
1042 | up to b->address + bp_location_shadow_len_after_address_max | |
1043 | The range we were requested to resolve shadows for is: | |
1044 | memaddr ... memaddr + len | |
1045 | Thus the safe cutoff boundaries for performance optimization are | |
1046 | memaddr + len <= b->address - bp_location_placed_address_before_address_max | |
1047 | and: | |
1048 | b->address + bp_location_shadow_len_after_address_max <= memaddr */ | |
c906108c | 1049 | |
8defab1a DJ |
1050 | void |
1051 | breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr, LONGEST len) | |
c906108c | 1052 | { |
876fa593 JK |
1053 | /* Left boundary, right boundary and median element of our binary search. */ |
1054 | unsigned bc_l, bc_r, bc; | |
1055 | ||
1056 | /* Find BC_L which is a leftmost element which may affect BUF content. It is | |
1057 | safe to report lower value but a failure to report higher one. */ | |
1058 | ||
1059 | bc_l = 0; | |
1060 | bc_r = bp_location_count; | |
1061 | while (bc_l + 1 < bc_r) | |
1062 | { | |
1063 | struct bp_location *b; | |
1064 | ||
1065 | bc = (bc_l + bc_r) / 2; | |
1066 | b = bp_location[bc]; | |
1067 | ||
1068 | /* Check first B->ADDRESS will not overflow due to the added constant. | |
1069 | Then advance the left boundary only if we are sure the BC element can | |
1070 | in no way affect the BUF content (MEMADDR to MEMADDR + LEN range). | |
1071 | ||
1072 | Use the BP_LOCATION_SHADOW_LEN_AFTER_ADDRESS_MAX safety offset so that | |
1073 | we cannot miss a breakpoint with its shadow range tail still reaching | |
1074 | MEMADDR. */ | |
c5aa993b | 1075 | |
876fa593 JK |
1076 | if (b->address + bp_location_shadow_len_after_address_max >= b->address |
1077 | && b->address + bp_location_shadow_len_after_address_max <= memaddr) | |
1078 | bc_l = bc; | |
1079 | else | |
1080 | bc_r = bc; | |
1081 | } | |
1082 | ||
1083 | /* Now do full processing of the found relevant range of elements. */ | |
1084 | ||
1085 | for (bc = bc_l; bc < bp_location_count; bc++) | |
c5aa993b | 1086 | { |
876fa593 JK |
1087 | struct bp_location *b = bp_location[bc]; |
1088 | CORE_ADDR bp_addr = 0; | |
1089 | int bp_size = 0; | |
1090 | int bptoffset = 0; | |
1091 | ||
ffce0d52 | 1092 | if (b->owner->type == bp_none) |
8a3fe4f8 | 1093 | warning (_("reading through apparently deleted breakpoint #%d?"), |
ffce0d52 DJ |
1094 | b->owner->number); |
1095 | ||
876fa593 JK |
1096 | /* Performance optimization: any futher element can no longer affect BUF |
1097 | content. */ | |
1098 | ||
1099 | if (b->address >= bp_location_placed_address_before_address_max | |
1100 | && memaddr + len <= b->address | |
1101 | - bp_location_placed_address_before_address_max) | |
1102 | break; | |
1103 | ||
1104 | if (!bp_location_has_shadow (b)) | |
c5aa993b | 1105 | continue; |
6c95b8df PA |
1106 | if (!breakpoint_address_match (b->target_info.placed_address_space, 0, |
1107 | current_program_space->aspace, 0)) | |
1108 | continue; | |
1109 | ||
c5aa993b JM |
1110 | /* Addresses and length of the part of the breakpoint that |
1111 | we need to copy. */ | |
8181d85f DJ |
1112 | bp_addr = b->target_info.placed_address; |
1113 | bp_size = b->target_info.shadow_len; | |
8defab1a | 1114 | |
c5aa993b JM |
1115 | if (bp_addr + bp_size <= memaddr) |
1116 | /* The breakpoint is entirely before the chunk of memory we | |
1117 | are reading. */ | |
1118 | continue; | |
8defab1a | 1119 | |
c5aa993b JM |
1120 | if (bp_addr >= memaddr + len) |
1121 | /* The breakpoint is entirely after the chunk of memory we are | |
1122 | reading. */ | |
1123 | continue; | |
c5aa993b | 1124 | |
8defab1a DJ |
1125 | /* Offset within shadow_contents. */ |
1126 | if (bp_addr < memaddr) | |
1127 | { | |
1128 | /* Only copy the second part of the breakpoint. */ | |
1129 | bp_size -= memaddr - bp_addr; | |
1130 | bptoffset = memaddr - bp_addr; | |
1131 | bp_addr = memaddr; | |
1132 | } | |
c5aa993b | 1133 | |
8defab1a DJ |
1134 | if (bp_addr + bp_size > memaddr + len) |
1135 | { | |
1136 | /* Only copy the first part of the breakpoint. */ | |
1137 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1138 | } | |
c5aa993b | 1139 | |
8defab1a DJ |
1140 | memcpy (buf + bp_addr - memaddr, |
1141 | b->target_info.shadow_contents + bptoffset, bp_size); | |
c5aa993b | 1142 | } |
c906108c | 1143 | } |
c906108c | 1144 | \f |
c5aa993b | 1145 | |
687595f9 | 1146 | /* A wrapper function for inserting catchpoints. */ |
9cbc821d | 1147 | static void |
687595f9 DJ |
1148 | insert_catchpoint (struct ui_out *uo, void *args) |
1149 | { | |
1150 | struct breakpoint *b = (struct breakpoint *) args; | |
1151 | int val = -1; | |
1152 | ||
fe798b75 JB |
1153 | gdb_assert (b->type == bp_catchpoint); |
1154 | gdb_assert (b->ops != NULL && b->ops->insert != NULL); | |
1155 | ||
1156 | b->ops->insert (b); | |
687595f9 DJ |
1157 | } |
1158 | ||
60e1c644 PA |
1159 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1160 | ||
a5606eee VP |
1161 | static int |
1162 | is_hardware_watchpoint (struct breakpoint *bpt) | |
1163 | { | |
1164 | return (bpt->type == bp_hardware_watchpoint | |
1165 | || bpt->type == bp_read_watchpoint | |
1166 | || bpt->type == bp_access_watchpoint); | |
1167 | } | |
7270d8f2 | 1168 | |
60e1c644 PA |
1169 | /* Return true if BPT is of any watchpoint kind, hardware or |
1170 | software. */ | |
1171 | ||
1172 | static int | |
1173 | is_watchpoint (struct breakpoint *bpt) | |
1174 | { | |
1175 | return (is_hardware_watchpoint (bpt) | |
1176 | || bpt->type == bp_watchpoint); | |
1177 | } | |
1178 | ||
fa4727a6 DJ |
1179 | /* Find the current value of a watchpoint on EXP. Return the value in |
1180 | *VALP and *RESULTP and the chain of intermediate and final values | |
1181 | in *VAL_CHAIN. RESULTP and VAL_CHAIN may be NULL if the caller does | |
1182 | not need them. | |
1183 | ||
ccc57cf9 | 1184 | If a memory error occurs while evaluating the expression, *RESULTP will |
fa4727a6 DJ |
1185 | be set to NULL. *RESULTP may be a lazy value, if the result could |
1186 | not be read from memory. It is used to determine whether a value | |
1187 | is user-specified (we should watch the whole value) or intermediate | |
1188 | (we should watch only the bit used to locate the final value). | |
1189 | ||
1190 | If the final value, or any intermediate value, could not be read | |
1191 | from memory, *VALP will be set to NULL. *VAL_CHAIN will still be | |
1192 | set to any referenced values. *VALP will never be a lazy value. | |
1193 | This is the value which we store in struct breakpoint. | |
1194 | ||
1195 | If VAL_CHAIN is non-NULL, *VAL_CHAIN will be released from the | |
1196 | value chain. The caller must free the values individually. If | |
1197 | VAL_CHAIN is NULL, all generated values will be left on the value | |
1198 | chain. */ | |
1199 | ||
1200 | static void | |
1201 | fetch_watchpoint_value (struct expression *exp, struct value **valp, | |
1202 | struct value **resultp, struct value **val_chain) | |
1203 | { | |
1204 | struct value *mark, *new_mark, *result; | |
ccc57cf9 | 1205 | volatile struct gdb_exception ex; |
fa4727a6 DJ |
1206 | |
1207 | *valp = NULL; | |
1208 | if (resultp) | |
1209 | *resultp = NULL; | |
1210 | if (val_chain) | |
1211 | *val_chain = NULL; | |
1212 | ||
1213 | /* Evaluate the expression. */ | |
1214 | mark = value_mark (); | |
1215 | result = NULL; | |
ccc57cf9 PA |
1216 | |
1217 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
1218 | { | |
1219 | result = evaluate_expression (exp); | |
1220 | } | |
1221 | if (ex.reason < 0) | |
1222 | { | |
1223 | /* Ignore memory errors, we want watchpoints pointing at | |
1224 | inaccessible memory to still be created; otherwise, throw the | |
1225 | error to some higher catcher. */ | |
1226 | switch (ex.error) | |
1227 | { | |
1228 | case MEMORY_ERROR: | |
1229 | break; | |
1230 | default: | |
1231 | throw_exception (ex); | |
1232 | break; | |
1233 | } | |
1234 | } | |
1235 | ||
fa4727a6 DJ |
1236 | new_mark = value_mark (); |
1237 | if (mark == new_mark) | |
1238 | return; | |
1239 | if (resultp) | |
1240 | *resultp = result; | |
1241 | ||
1242 | /* Make sure it's not lazy, so that after the target stops again we | |
1243 | have a non-lazy previous value to compare with. */ | |
1244 | if (result != NULL | |
1245 | && (!value_lazy (result) || gdb_value_fetch_lazy (result))) | |
1246 | *valp = result; | |
1247 | ||
1248 | if (val_chain) | |
1249 | { | |
1250 | /* Return the chain of intermediate values. We use this to | |
1251 | decide which addresses to watch. */ | |
1252 | *val_chain = new_mark; | |
1253 | value_release_to_mark (mark); | |
1254 | } | |
1255 | } | |
1256 | ||
f6bc2008 PA |
1257 | /* Assuming that B is a watchpoint: returns true if the current thread |
1258 | and its running state are safe to evaluate or update watchpoint B. | |
1259 | Watchpoints on local expressions need to be evaluated in the | |
1260 | context of the thread that was current when the watchpoint was | |
1261 | created, and, that thread needs to be stopped to be able to select | |
1262 | the correct frame context. Watchpoints on global expressions can | |
1263 | be evaluated on any thread, and in any state. It is presently left | |
1264 | to the target allowing memory accesses when threads are | |
1265 | running. */ | |
1266 | ||
1267 | static int | |
1268 | watchpoint_in_thread_scope (struct breakpoint *b) | |
1269 | { | |
1270 | return (ptid_equal (b->watchpoint_thread, null_ptid) | |
1271 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1272 | && !is_executing (inferior_ptid))); | |
1273 | } | |
1274 | ||
567e1b4e JB |
1275 | /* Assuming that B is a watchpoint: |
1276 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1277 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1278 | - Evaluate the condition if there is one, and store the result |
1279 | in b->loc->cond. | |
a5606eee VP |
1280 | - Update the list of values that must be watched in B->loc. |
1281 | ||
bfa149ac | 1282 | If the watchpoint disposition is disp_del_at_next_stop, then do nothing. |
a79d3c27 JK |
1283 | If this is local watchpoint that is out of scope, delete it. |
1284 | ||
1285 | Even with `set breakpoint always-inserted on' the watchpoints are removed | |
1286 | + inserted on each stop here. Normal breakpoints must never be removed | |
1287 | because they might be missed by a running thread when debugging in non-stop | |
1288 | mode. On the other hand, hardware watchpoints (is_hardware_watchpoint; | |
1289 | processed here) are specific to each LWP since they are stored in each LWP's | |
1290 | hardware debug registers. Therefore, such LWP must be stopped first in | |
1291 | order to be able to modify its hardware watchpoints. | |
1292 | ||
1293 | Hardware watchpoints must be reset exactly once after being presented to the | |
1294 | user. It cannot be done sooner, because it would reset the data used to | |
1295 | present the watchpoint hit to the user. And it must not be done later | |
1296 | because it could display the same single watchpoint hit during multiple GDB | |
1297 | stops. Note that the latter is relevant only to the hardware watchpoint | |
1298 | types bp_read_watchpoint and bp_access_watchpoint. False hit by | |
1299 | bp_hardware_watchpoint is not user-visible - its hit is suppressed if the | |
1300 | memory content has not changed. | |
1301 | ||
1302 | The following constraints influence the location where we can reset hardware | |
1303 | watchpoints: | |
1304 | ||
1305 | * target_stopped_by_watchpoint and target_stopped_data_address are called | |
1306 | several times when GDB stops. | |
1307 | ||
1308 | [linux] | |
1309 | * Multiple hardware watchpoints can be hit at the same time, causing GDB to | |
1310 | stop. GDB only presents one hardware watchpoint hit at a time as the | |
1311 | reason for stopping, and all the other hits are presented later, one after | |
1312 | the other, each time the user requests the execution to be resumed. | |
1313 | Execution is not resumed for the threads still having pending hit event | |
1314 | stored in LWP_INFO->STATUS. While the watchpoint is already removed from | |
1315 | the inferior on the first stop the thread hit event is kept being reported | |
1316 | from its cached value by linux_nat_stopped_data_address until the real | |
1317 | thread resume happens after the watchpoint gets presented and thus its | |
1318 | LWP_INFO->STATUS gets reset. | |
1319 | ||
1320 | Therefore the hardware watchpoint hit can get safely reset on the watchpoint | |
1321 | removal from inferior. */ | |
1322 | ||
b40ce68a | 1323 | static void |
a5606eee | 1324 | update_watchpoint (struct breakpoint *b, int reparse) |
7270d8f2 | 1325 | { |
a5606eee | 1326 | int within_current_scope; |
a5606eee VP |
1327 | struct frame_id saved_frame_id; |
1328 | struct bp_location *loc; | |
66076460 | 1329 | int frame_saved; |
a5606eee VP |
1330 | bpstat bs; |
1331 | ||
f6bc2008 PA |
1332 | /* If this is a local watchpoint, we only want to check if the |
1333 | watchpoint frame is in scope if the current thread is the thread | |
1334 | that was used to create the watchpoint. */ | |
1335 | if (!watchpoint_in_thread_scope (b)) | |
1336 | return; | |
1337 | ||
876fa593 | 1338 | /* We don't free locations. They are stored in bp_location array and |
567e1b4e JB |
1339 | update_global_locations will eventually delete them and remove |
1340 | breakpoints if needed. */ | |
a5606eee VP |
1341 | b->loc = NULL; |
1342 | ||
1343 | if (b->disposition == disp_del_at_next_stop) | |
1344 | return; | |
1345 | ||
66076460 | 1346 | frame_saved = 0; |
a5606eee VP |
1347 | |
1348 | /* Determine if the watchpoint is within scope. */ | |
1349 | if (b->exp_valid_block == NULL) | |
1350 | within_current_scope = 1; | |
1351 | else | |
1352 | { | |
1353 | struct frame_info *fi; | |
66076460 DJ |
1354 | |
1355 | /* Save the current frame's ID so we can restore it after | |
1356 | evaluating the watchpoint expression on its own frame. */ | |
1357 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1358 | took a frame parameter, so that we didn't have to change the | |
1359 | selected frame. */ | |
1360 | frame_saved = 1; | |
1361 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1362 | ||
a5606eee VP |
1363 | fi = frame_find_by_id (b->watchpoint_frame); |
1364 | within_current_scope = (fi != NULL); | |
1365 | if (within_current_scope) | |
1366 | select_frame (fi); | |
1367 | } | |
1368 | ||
1369 | if (within_current_scope && reparse) | |
1370 | { | |
1371 | char *s; | |
1372 | if (b->exp) | |
1373 | { | |
1374 | xfree (b->exp); | |
1375 | b->exp = NULL; | |
1376 | } | |
1377 | s = b->exp_string; | |
1378 | b->exp = parse_exp_1 (&s, b->exp_valid_block, 0); | |
1379 | /* If the meaning of expression itself changed, the old value is | |
1380 | no longer relevant. We don't want to report a watchpoint hit | |
1381 | to the user when the old value and the new value may actually | |
1382 | be completely different objects. */ | |
1383 | value_free (b->val); | |
fa4727a6 DJ |
1384 | b->val = NULL; |
1385 | b->val_valid = 0; | |
60e1c644 PA |
1386 | |
1387 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1388 | expression is stored in the breakpoint object, not in the | |
1389 | locations (re)created below. */ | |
1390 | if (b->cond_string != NULL) | |
1391 | { | |
1392 | if (b->cond_exp != NULL) | |
1393 | { | |
1394 | xfree (b->cond_exp); | |
1395 | b->cond_exp = NULL; | |
1396 | } | |
1397 | ||
1398 | s = b->cond_string; | |
1399 | b->cond_exp = parse_exp_1 (&s, b->cond_exp_valid_block, 0); | |
1400 | } | |
a5606eee | 1401 | } |
a5606eee VP |
1402 | |
1403 | /* If we failed to parse the expression, for example because | |
1404 | it refers to a global variable in a not-yet-loaded shared library, | |
1405 | don't try to insert watchpoint. We don't automatically delete | |
1406 | such watchpoint, though, since failure to parse expression | |
1407 | is different from out-of-scope watchpoint. */ | |
2d134ed3 PA |
1408 | if ( !target_has_execution) |
1409 | { | |
1410 | /* Without execution, memory can't change. No use to try and | |
1411 | set watchpoint locations. The watchpoint will be reset when | |
1412 | the target gains execution, through breakpoint_re_set. */ | |
1413 | } | |
1414 | else if (within_current_scope && b->exp) | |
a5606eee | 1415 | { |
fa4727a6 | 1416 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1417 | struct program_space *frame_pspace; |
a5606eee | 1418 | |
fa4727a6 | 1419 | fetch_watchpoint_value (b->exp, &v, &result, &val_chain); |
a5606eee | 1420 | |
a5606eee VP |
1421 | /* Avoid setting b->val if it's already set. The meaning of |
1422 | b->val is 'the last value' user saw, and we should update | |
1423 | it only if we reported that last value to user. As it | |
1424 | happens, the code that reports it updates b->val directly. */ | |
fa4727a6 DJ |
1425 | if (!b->val_valid) |
1426 | { | |
1427 | b->val = v; | |
1428 | b->val_valid = 1; | |
1429 | } | |
a5606eee | 1430 | |
db2ad4c3 JK |
1431 | /* Change the type of breakpoint between hardware assisted or an |
1432 | ordinary watchpoint depending on the hardware support and free | |
1433 | hardware slots. REPARSE is set when the inferior is started. */ | |
1434 | if ((b->type == bp_watchpoint || b->type == bp_hardware_watchpoint) | |
1435 | && reparse) | |
1436 | { | |
ca2d49e8 | 1437 | int i, mem_cnt, other_type_used; |
db2ad4c3 | 1438 | |
7b838ca2 TJB |
1439 | /* We need to determine how many resources are already used |
1440 | for all other hardware watchpoints to see if we still have | |
1441 | enough resources to also fit this watchpoint in as well. | |
1442 | To avoid the hw_watchpoint_used_count call below from counting | |
1443 | this watchpoint, make sure that it is marked as a software | |
1444 | watchpoint. */ | |
1445 | b->type = bp_watchpoint; | |
db2ad4c3 JK |
1446 | i = hw_watchpoint_used_count (bp_hardware_watchpoint, |
1447 | &other_type_used); | |
1448 | mem_cnt = can_use_hardware_watchpoint (val_chain); | |
1449 | ||
ca2d49e8 | 1450 | if (!mem_cnt) |
db2ad4c3 JK |
1451 | b->type = bp_watchpoint; |
1452 | else | |
ca2d49e8 | 1453 | { |
d92524f1 | 1454 | int target_resources_ok = target_can_use_hardware_watchpoint |
ca2d49e8 SL |
1455 | (bp_hardware_watchpoint, i + mem_cnt, other_type_used); |
1456 | if (target_resources_ok <= 0) | |
1457 | b->type = bp_watchpoint; | |
1458 | else | |
1459 | b->type = bp_hardware_watchpoint; | |
1460 | } | |
db2ad4c3 JK |
1461 | } |
1462 | ||
2d134ed3 PA |
1463 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1464 | ||
a5606eee | 1465 | /* Look at each value on the value chain. */ |
fa4727a6 | 1466 | for (v = val_chain; v; v = next) |
a5606eee VP |
1467 | { |
1468 | /* If it's a memory location, and GDB actually needed | |
1469 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1470 | must watch it. If the first value returned is |
1471 | still lazy, that means an error occurred reading it; | |
1472 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1473 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1474 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1475 | { |
1476 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1477 | |
a5606eee VP |
1478 | /* We only watch structs and arrays if user asked |
1479 | for it explicitly, never if they just happen to | |
1480 | appear in the middle of some value chain. */ | |
fa4727a6 | 1481 | if (v == result |
a5606eee VP |
1482 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1483 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1484 | { | |
1485 | CORE_ADDR addr; | |
1486 | int len, type; | |
1487 | struct bp_location *loc, **tmp; | |
1488 | ||
42ae5230 | 1489 | addr = value_address (v); |
a5606eee VP |
1490 | len = TYPE_LENGTH (value_type (v)); |
1491 | type = hw_write; | |
1492 | if (b->type == bp_read_watchpoint) | |
1493 | type = hw_read; | |
1494 | else if (b->type == bp_access_watchpoint) | |
1495 | type = hw_access; | |
1496 | ||
39d61571 | 1497 | loc = allocate_bp_location (b); |
a5606eee VP |
1498 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
1499 | ; | |
1500 | *tmp = loc; | |
a6d9a66e | 1501 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1502 | |
1503 | loc->pspace = frame_pspace; | |
a5606eee VP |
1504 | loc->address = addr; |
1505 | loc->length = len; | |
1506 | loc->watchpoint_type = type; | |
1507 | } | |
1508 | } | |
1509 | ||
1510 | next = value_next (v); | |
1511 | if (v != b->val) | |
1512 | value_free (v); | |
1513 | } | |
1514 | ||
c7437ca6 PA |
1515 | /* If a software watchpoint is not watching any memory, then the |
1516 | above left it without any location set up. But, | |
1517 | bpstat_stop_status requires a location to be able to report | |
1518 | stops, so make sure there's at least a dummy one. */ | |
1519 | if (b->type == bp_watchpoint && b->loc == NULL) | |
1520 | { | |
1521 | b->loc = allocate_bp_location (b); | |
1522 | b->loc->pspace = frame_pspace; | |
1523 | b->loc->address = -1; | |
1524 | b->loc->length = -1; | |
1525 | b->loc->watchpoint_type = -1; | |
1526 | } | |
a5606eee VP |
1527 | } |
1528 | else if (!within_current_scope) | |
7270d8f2 | 1529 | { |
a5606eee | 1530 | printf_filtered (_("\ |
567e1b4e | 1531 | Watchpoint %d deleted because the program has left the block \n\ |
a5606eee VP |
1532 | in which its expression is valid.\n"), |
1533 | b->number); | |
1534 | if (b->related_breakpoint) | |
60e1c644 PA |
1535 | { |
1536 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1537 | b->related_breakpoint->related_breakpoint = NULL; | |
1538 | b->related_breakpoint= NULL; | |
1539 | } | |
a5606eee | 1540 | b->disposition = disp_del_at_next_stop; |
7270d8f2 | 1541 | } |
a5606eee VP |
1542 | |
1543 | /* Restore the selected frame. */ | |
66076460 DJ |
1544 | if (frame_saved) |
1545 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1546 | } |
1547 | ||
a5606eee | 1548 | |
74960c60 VP |
1549 | /* Returns 1 iff breakpoint location should be |
1550 | inserted in the inferior. */ | |
1551 | static int | |
1552 | should_be_inserted (struct bp_location *bpt) | |
1553 | { | |
1554 | if (!breakpoint_enabled (bpt->owner)) | |
1555 | return 0; | |
1556 | ||
1557 | if (bpt->owner->disposition == disp_del_at_next_stop) | |
1558 | return 0; | |
1559 | ||
1560 | if (!bpt->enabled || bpt->shlib_disabled || bpt->duplicate) | |
1561 | return 0; | |
1562 | ||
56710373 PA |
1563 | /* This is set for example, when we're attached to the parent of a |
1564 | vfork, and have detached from the child. The child is running | |
1565 | free, and we expect it to do an exec or exit, at which point the | |
1566 | OS makes the parent schedulable again (and the target reports | |
1567 | that the vfork is done). Until the child is done with the shared | |
1568 | memory region, do not insert breakpoints in the parent, otherwise | |
1569 | the child could still trip on the parent's breakpoints. Since | |
1570 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
1571 | if (bpt->pspace->breakpoints_not_allowed) | |
1572 | return 0; | |
1573 | ||
1042e4c0 SS |
1574 | /* Tracepoints are inserted by the target at a time of its choosing, |
1575 | not by us. */ | |
7a697b8d | 1576 | if (tracepoint_type (bpt->owner)) |
1042e4c0 SS |
1577 | return 0; |
1578 | ||
74960c60 VP |
1579 | return 1; |
1580 | } | |
1581 | ||
879bfdc2 DJ |
1582 | /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint. |
1583 | Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS, | |
fa3a767f | 1584 | and HW_BREAKPOINT_ERROR are used to report problems. |
879bfdc2 DJ |
1585 | |
1586 | NOTE drow/2003-09-09: This routine could be broken down to an object-style | |
1587 | method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 1588 | static int |
879bfdc2 | 1589 | insert_bp_location (struct bp_location *bpt, |
26bb91f3 | 1590 | struct ui_file *tmp_error_stream, |
fa3a767f | 1591 | int *disabled_breaks, |
26bb91f3 | 1592 | int *hw_breakpoint_error) |
879bfdc2 DJ |
1593 | { |
1594 | int val = 0; | |
1595 | ||
74960c60 | 1596 | if (!should_be_inserted (bpt) || bpt->inserted) |
879bfdc2 DJ |
1597 | return 0; |
1598 | ||
8181d85f DJ |
1599 | /* Initialize the target-specific information. */ |
1600 | memset (&bpt->target_info, 0, sizeof (bpt->target_info)); | |
1601 | bpt->target_info.placed_address = bpt->address; | |
6c95b8df | 1602 | bpt->target_info.placed_address_space = bpt->pspace->aspace; |
8181d85f | 1603 | |
879bfdc2 DJ |
1604 | if (bpt->loc_type == bp_loc_software_breakpoint |
1605 | || bpt->loc_type == bp_loc_hardware_breakpoint) | |
1606 | { | |
765dc015 VP |
1607 | if (bpt->owner->type != bp_hardware_breakpoint) |
1608 | { | |
1609 | /* If the explicitly specified breakpoint type | |
1610 | is not hardware breakpoint, check the memory map to see | |
1611 | if the breakpoint address is in read only memory or not. | |
1612 | Two important cases are: | |
1613 | - location type is not hardware breakpoint, memory | |
1614 | is readonly. We change the type of the location to | |
1615 | hardware breakpoint. | |
1616 | - location type is hardware breakpoint, memory is read-write. | |
1617 | This means we've previously made the location hardware one, but | |
1618 | then the memory map changed, so we undo. | |
1619 | ||
1620 | When breakpoints are removed, remove_breakpoints will | |
1621 | use location types we've just set here, the only possible | |
1622 | problem is that memory map has changed during running program, | |
1623 | but it's not going to work anyway with current gdb. */ | |
1624 | struct mem_region *mr | |
1625 | = lookup_mem_region (bpt->target_info.placed_address); | |
1626 | ||
1627 | if (mr) | |
1628 | { | |
1629 | if (automatic_hardware_breakpoints) | |
1630 | { | |
1631 | int changed = 0; | |
1632 | enum bp_loc_type new_type; | |
1633 | ||
1634 | if (mr->attrib.mode != MEM_RW) | |
1635 | new_type = bp_loc_hardware_breakpoint; | |
1636 | else | |
1637 | new_type = bp_loc_software_breakpoint; | |
1638 | ||
1639 | if (new_type != bpt->loc_type) | |
1640 | { | |
1641 | static int said = 0; | |
1642 | bpt->loc_type = new_type; | |
1643 | if (!said) | |
1644 | { | |
1645 | fprintf_filtered (gdb_stdout, _("\ | |
0767c96d | 1646 | Note: automatically using hardware breakpoints for read-only addresses.\n")); |
765dc015 VP |
1647 | said = 1; |
1648 | } | |
1649 | } | |
1650 | } | |
1651 | else if (bpt->loc_type == bp_loc_software_breakpoint | |
1652 | && mr->attrib.mode != MEM_RW) | |
1653 | warning (_("cannot set software breakpoint at readonly address %s"), | |
5af949e3 | 1654 | paddress (bpt->gdbarch, bpt->address)); |
765dc015 VP |
1655 | } |
1656 | } | |
1657 | ||
879bfdc2 DJ |
1658 | /* First check to see if we have to handle an overlay. */ |
1659 | if (overlay_debugging == ovly_off | |
1660 | || bpt->section == NULL | |
1661 | || !(section_is_overlay (bpt->section))) | |
1662 | { | |
1663 | /* No overlay handling: just set the breakpoint. */ | |
1664 | ||
1665 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
a6d9a66e UW |
1666 | val = target_insert_hw_breakpoint (bpt->gdbarch, |
1667 | &bpt->target_info); | |
879bfdc2 | 1668 | else |
a6d9a66e UW |
1669 | val = target_insert_breakpoint (bpt->gdbarch, |
1670 | &bpt->target_info); | |
879bfdc2 DJ |
1671 | } |
1672 | else | |
1673 | { | |
1674 | /* This breakpoint is in an overlay section. | |
1675 | Shall we set a breakpoint at the LMA? */ | |
1676 | if (!overlay_events_enabled) | |
1677 | { | |
1678 | /* Yes -- overlay event support is not active, | |
1679 | so we must try to set a breakpoint at the LMA. | |
1680 | This will not work for a hardware breakpoint. */ | |
1681 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8a3fe4f8 | 1682 | warning (_("hardware breakpoint %d not supported in overlay!"), |
879bfdc2 DJ |
1683 | bpt->owner->number); |
1684 | else | |
1685 | { | |
1686 | CORE_ADDR addr = overlay_unmapped_address (bpt->address, | |
1687 | bpt->section); | |
1688 | /* Set a software (trap) breakpoint at the LMA. */ | |
8181d85f DJ |
1689 | bpt->overlay_target_info = bpt->target_info; |
1690 | bpt->overlay_target_info.placed_address = addr; | |
a6d9a66e UW |
1691 | val = target_insert_breakpoint (bpt->gdbarch, |
1692 | &bpt->overlay_target_info); | |
879bfdc2 | 1693 | if (val != 0) |
99361f52 DE |
1694 | fprintf_unfiltered (tmp_error_stream, |
1695 | "Overlay breakpoint %d failed: in ROM?\n", | |
879bfdc2 DJ |
1696 | bpt->owner->number); |
1697 | } | |
1698 | } | |
1699 | /* Shall we set a breakpoint at the VMA? */ | |
1700 | if (section_is_mapped (bpt->section)) | |
1701 | { | |
1702 | /* Yes. This overlay section is mapped into memory. */ | |
1703 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
a6d9a66e UW |
1704 | val = target_insert_hw_breakpoint (bpt->gdbarch, |
1705 | &bpt->target_info); | |
879bfdc2 | 1706 | else |
a6d9a66e UW |
1707 | val = target_insert_breakpoint (bpt->gdbarch, |
1708 | &bpt->target_info); | |
879bfdc2 DJ |
1709 | } |
1710 | else | |
1711 | { | |
1712 | /* No. This breakpoint will not be inserted. | |
1713 | No error, but do not mark the bp as 'inserted'. */ | |
1714 | return 0; | |
1715 | } | |
1716 | } | |
1717 | ||
1718 | if (val) | |
1719 | { | |
1720 | /* Can't set the breakpoint. */ | |
6c95b8df | 1721 | if (solib_name_from_address (bpt->pspace, bpt->address)) |
879bfdc2 DJ |
1722 | { |
1723 | /* See also: disable_breakpoints_in_shlibs. */ | |
1724 | val = 0; | |
0d381245 | 1725 | bpt->shlib_disabled = 1; |
879bfdc2 DJ |
1726 | if (!*disabled_breaks) |
1727 | { | |
1728 | fprintf_unfiltered (tmp_error_stream, | |
1729 | "Cannot insert breakpoint %d.\n", | |
1730 | bpt->owner->number); | |
1731 | fprintf_unfiltered (tmp_error_stream, | |
1732 | "Temporarily disabling shared library breakpoints:\n"); | |
1733 | } | |
1734 | *disabled_breaks = 1; | |
1735 | fprintf_unfiltered (tmp_error_stream, | |
1736 | "breakpoint #%d\n", bpt->owner->number); | |
1737 | } | |
1738 | else | |
879bfdc2 | 1739 | { |
879bfdc2 DJ |
1740 | if (bpt->loc_type == bp_loc_hardware_breakpoint) |
1741 | { | |
1742 | *hw_breakpoint_error = 1; | |
1743 | fprintf_unfiltered (tmp_error_stream, | |
1744 | "Cannot insert hardware breakpoint %d.\n", | |
1745 | bpt->owner->number); | |
1746 | } | |
1747 | else | |
1748 | { | |
1749 | fprintf_unfiltered (tmp_error_stream, | |
1750 | "Cannot insert breakpoint %d.\n", | |
1751 | bpt->owner->number); | |
1752 | fprintf_filtered (tmp_error_stream, | |
1753 | "Error accessing memory address "); | |
5af949e3 UW |
1754 | fputs_filtered (paddress (bpt->gdbarch, bpt->address), |
1755 | tmp_error_stream); | |
879bfdc2 DJ |
1756 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1757 | safe_strerror (val)); | |
1758 | } | |
1759 | ||
1760 | } | |
1761 | } | |
1762 | else | |
1763 | bpt->inserted = 1; | |
1764 | ||
1765 | return val; | |
1766 | } | |
1767 | ||
1768 | else if (bpt->loc_type == bp_loc_hardware_watchpoint | |
1769 | /* NOTE drow/2003-09-08: This state only exists for removing | |
1770 | watchpoints. It's not clear that it's necessary... */ | |
1771 | && bpt->owner->disposition != disp_del_at_next_stop) | |
1772 | { | |
85d721b8 | 1773 | val = target_insert_watchpoint (bpt->address, |
a5606eee VP |
1774 | bpt->length, |
1775 | bpt->watchpoint_type); | |
85d721b8 PA |
1776 | |
1777 | /* If trying to set a read-watchpoint, and it turns out it's not | |
1778 | supported, try emulating one with an access watchpoint. */ | |
1779 | if (val == 1 && bpt->watchpoint_type == hw_read) | |
1780 | { | |
1781 | struct bp_location *loc, **loc_temp; | |
1782 | ||
1783 | /* But don't try to insert it, if there's already another | |
1784 | hw_access location that would be considered a duplicate | |
1785 | of this one. */ | |
1786 | ALL_BP_LOCATIONS (loc, loc_temp) | |
1787 | if (loc != bpt | |
1788 | && loc->watchpoint_type == hw_access | |
1789 | && watchpoint_locations_match (bpt, loc)) | |
1790 | { | |
1791 | bpt->duplicate = 1; | |
1792 | bpt->inserted = 1; | |
1793 | bpt->target_info = loc->target_info; | |
1794 | bpt->watchpoint_type = hw_access; | |
1795 | val = 0; | |
1796 | break; | |
1797 | } | |
1798 | ||
1799 | if (val == 1) | |
1800 | { | |
1801 | val = target_insert_watchpoint (bpt->address, | |
1802 | bpt->length, | |
1803 | hw_access); | |
1804 | if (val == 0) | |
1805 | bpt->watchpoint_type = hw_access; | |
1806 | } | |
1807 | } | |
1808 | ||
1809 | bpt->inserted = (val == 0); | |
879bfdc2 DJ |
1810 | } |
1811 | ||
fe798b75 | 1812 | else if (bpt->owner->type == bp_catchpoint) |
879bfdc2 | 1813 | { |
71fff37b AC |
1814 | struct gdb_exception e = catch_exception (uiout, insert_catchpoint, |
1815 | bpt->owner, RETURN_MASK_ERROR); | |
9cbc821d AC |
1816 | exception_fprintf (gdb_stderr, e, "warning: inserting catchpoint %d: ", |
1817 | bpt->owner->number); | |
1818 | if (e.reason < 0) | |
879bfdc2 DJ |
1819 | bpt->owner->enable_state = bp_disabled; |
1820 | else | |
1821 | bpt->inserted = 1; | |
1640b821 DJ |
1822 | |
1823 | /* We've already printed an error message if there was a problem | |
1824 | inserting this catchpoint, and we've disabled the catchpoint, | |
1825 | so just return success. */ | |
1826 | return 0; | |
879bfdc2 DJ |
1827 | } |
1828 | ||
1829 | return 0; | |
1830 | } | |
1831 | ||
6c95b8df PA |
1832 | /* This function is called when program space PSPACE is about to be |
1833 | deleted. It takes care of updating breakpoints to not reference | |
1834 | PSPACE anymore. */ | |
1835 | ||
1836 | void | |
1837 | breakpoint_program_space_exit (struct program_space *pspace) | |
1838 | { | |
1839 | struct breakpoint *b, *b_temp; | |
876fa593 | 1840 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
1841 | |
1842 | /* Remove any breakpoint that was set through this program space. */ | |
1843 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
1844 | { | |
1845 | if (b->pspace == pspace) | |
1846 | delete_breakpoint (b); | |
1847 | } | |
1848 | ||
1849 | /* Breakpoints set through other program spaces could have locations | |
1850 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 1851 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
1852 | { |
1853 | struct bp_location *tmp; | |
1854 | ||
1855 | if (loc->pspace == pspace) | |
1856 | { | |
1857 | if (loc->owner->loc == loc) | |
1858 | loc->owner->loc = loc->next; | |
1859 | else | |
1860 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
1861 | if (tmp->next == loc) | |
1862 | { | |
1863 | tmp->next = loc->next; | |
1864 | break; | |
1865 | } | |
1866 | } | |
1867 | } | |
1868 | ||
1869 | /* Now update the global location list to permanently delete the | |
1870 | removed locations above. */ | |
1871 | update_global_location_list (0); | |
1872 | } | |
1873 | ||
74960c60 VP |
1874 | /* Make sure all breakpoints are inserted in inferior. |
1875 | Throws exception on any error. | |
1876 | A breakpoint that is already inserted won't be inserted | |
1877 | again, so calling this function twice is safe. */ | |
1878 | void | |
1879 | insert_breakpoints (void) | |
1880 | { | |
1881 | struct breakpoint *bpt; | |
1882 | ||
1883 | ALL_BREAKPOINTS (bpt) | |
1884 | if (is_hardware_watchpoint (bpt)) | |
1885 | update_watchpoint (bpt, 0 /* don't reparse. */); | |
1886 | ||
b60e7edf | 1887 | update_global_location_list (1); |
74960c60 | 1888 | |
c35b1492 PA |
1889 | /* update_global_location_list does not insert breakpoints when |
1890 | always_inserted_mode is not enabled. Explicitly insert them | |
1891 | now. */ | |
1892 | if (!breakpoints_always_inserted_mode ()) | |
74960c60 VP |
1893 | insert_breakpoint_locations (); |
1894 | } | |
1895 | ||
c906108c SS |
1896 | /* insert_breakpoints is used when starting or continuing the program. |
1897 | remove_breakpoints is used when the program stops. | |
1898 | Both return zero if successful, | |
1899 | or an `errno' value if could not write the inferior. */ | |
1900 | ||
74960c60 VP |
1901 | static void |
1902 | insert_breakpoint_locations (void) | |
c906108c | 1903 | { |
a5606eee | 1904 | struct breakpoint *bpt; |
876fa593 | 1905 | struct bp_location *b, **bp_tmp; |
e236ba44 | 1906 | int error = 0; |
c906108c SS |
1907 | int val = 0; |
1908 | int disabled_breaks = 0; | |
81d0cc19 | 1909 | int hw_breakpoint_error = 0; |
c906108c | 1910 | |
81d0cc19 | 1911 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 1912 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 1913 | |
81d0cc19 GS |
1914 | /* Explicitly mark the warning -- this will only be printed if |
1915 | there was an error. */ | |
1916 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
6c95b8df PA |
1917 | |
1918 | save_current_space_and_thread (); | |
1919 | ||
876fa593 | 1920 | ALL_BP_LOCATIONS (b, bp_tmp) |
879bfdc2 | 1921 | { |
6c95b8df PA |
1922 | struct thread_info *tp; |
1923 | CORE_ADDR last_addr; | |
1924 | ||
74960c60 | 1925 | if (!should_be_inserted (b) || b->inserted) |
879bfdc2 DJ |
1926 | continue; |
1927 | ||
f365de73 AS |
1928 | /* There is no point inserting thread-specific breakpoints if the |
1929 | thread no longer exists. */ | |
1930 | if (b->owner->thread != -1 | |
1931 | && !valid_thread_id (b->owner->thread)) | |
1932 | continue; | |
1933 | ||
6c95b8df PA |
1934 | switch_to_program_space_and_thread (b->pspace); |
1935 | ||
1936 | /* For targets that support global breakpoints, there's no need | |
1937 | to select an inferior to insert breakpoint to. In fact, even | |
1938 | if we aren't attached to any process yet, we should still | |
1939 | insert breakpoints. */ | |
1940 | if (!gdbarch_has_global_breakpoints (target_gdbarch) | |
1941 | && ptid_equal (inferior_ptid, null_ptid)) | |
1942 | continue; | |
1943 | ||
879bfdc2 | 1944 | val = insert_bp_location (b, tmp_error_stream, |
fa3a767f | 1945 | &disabled_breaks, |
879bfdc2 DJ |
1946 | &hw_breakpoint_error); |
1947 | if (val) | |
e236ba44 | 1948 | error = val; |
879bfdc2 | 1949 | } |
c906108c | 1950 | |
a5606eee VP |
1951 | /* If we failed to insert all locations of a watchpoint, |
1952 | remove them, as half-inserted watchpoint is of limited use. */ | |
1953 | ALL_BREAKPOINTS (bpt) | |
1954 | { | |
1955 | int some_failed = 0; | |
1956 | struct bp_location *loc; | |
1957 | ||
1958 | if (!is_hardware_watchpoint (bpt)) | |
1959 | continue; | |
1960 | ||
d6b74ac4 | 1961 | if (!breakpoint_enabled (bpt)) |
a5606eee | 1962 | continue; |
74960c60 VP |
1963 | |
1964 | if (bpt->disposition == disp_del_at_next_stop) | |
1965 | continue; | |
a5606eee VP |
1966 | |
1967 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 1968 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
1969 | { |
1970 | some_failed = 1; | |
1971 | break; | |
1972 | } | |
1973 | if (some_failed) | |
1974 | { | |
1975 | for (loc = bpt->loc; loc; loc = loc->next) | |
1976 | if (loc->inserted) | |
1977 | remove_breakpoint (loc, mark_uninserted); | |
1978 | ||
1979 | hw_breakpoint_error = 1; | |
1980 | fprintf_unfiltered (tmp_error_stream, | |
1981 | "Could not insert hardware watchpoint %d.\n", | |
1982 | bpt->number); | |
1983 | error = -1; | |
1984 | } | |
1985 | } | |
1986 | ||
e236ba44 | 1987 | if (error) |
81d0cc19 GS |
1988 | { |
1989 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1990 | message about possibly exhausted resources. */ | |
879bfdc2 | 1991 | if (hw_breakpoint_error) |
81d0cc19 | 1992 | { |
c6510018 MS |
1993 | fprintf_unfiltered (tmp_error_stream, |
1994 | "Could not insert hardware breakpoints:\n\ | |
1995 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1996 | } |
81d0cc19 GS |
1997 | target_terminal_ours_for_output (); |
1998 | error_stream (tmp_error_stream); | |
1999 | } | |
f7545552 TT |
2000 | |
2001 | do_cleanups (cleanups); | |
c906108c SS |
2002 | } |
2003 | ||
c906108c | 2004 | int |
fba45db2 | 2005 | remove_breakpoints (void) |
c906108c | 2006 | { |
876fa593 | 2007 | struct bp_location *b, **bp_tmp; |
3a1bae8e | 2008 | int val = 0; |
c906108c | 2009 | |
876fa593 | 2010 | ALL_BP_LOCATIONS (b, bp_tmp) |
c5aa993b | 2011 | { |
0bde7532 | 2012 | if (b->inserted) |
3a1bae8e | 2013 | val |= remove_breakpoint (b, mark_uninserted); |
c5aa993b | 2014 | } |
3a1bae8e | 2015 | return val; |
c906108c SS |
2016 | } |
2017 | ||
6c95b8df PA |
2018 | /* Remove breakpoints of process PID. */ |
2019 | ||
2020 | int | |
2021 | remove_breakpoints_pid (int pid) | |
2022 | { | |
876fa593 | 2023 | struct bp_location *b, **b_tmp; |
6c95b8df PA |
2024 | int val; |
2025 | struct inferior *inf = find_inferior_pid (pid); | |
2026 | ||
876fa593 | 2027 | ALL_BP_LOCATIONS (b, b_tmp) |
6c95b8df PA |
2028 | { |
2029 | if (b->pspace != inf->pspace) | |
2030 | continue; | |
2031 | ||
2032 | if (b->inserted) | |
2033 | { | |
2034 | val = remove_breakpoint (b, mark_uninserted); | |
2035 | if (val != 0) | |
2036 | return val; | |
2037 | } | |
2038 | } | |
2039 | return 0; | |
2040 | } | |
2041 | ||
692590c1 | 2042 | int |
80ce1ecb | 2043 | remove_hw_watchpoints (void) |
692590c1 | 2044 | { |
876fa593 | 2045 | struct bp_location *b, **bp_tmp; |
3a1bae8e | 2046 | int val = 0; |
692590c1 | 2047 | |
876fa593 | 2048 | ALL_BP_LOCATIONS (b, bp_tmp) |
692590c1 | 2049 | { |
0bde7532 | 2050 | if (b->inserted && b->loc_type == bp_loc_hardware_watchpoint) |
3a1bae8e | 2051 | val |= remove_breakpoint (b, mark_uninserted); |
692590c1 | 2052 | } |
3a1bae8e | 2053 | return val; |
692590c1 MS |
2054 | } |
2055 | ||
c906108c | 2056 | int |
fba45db2 | 2057 | reattach_breakpoints (int pid) |
c906108c | 2058 | { |
6c95b8df | 2059 | struct cleanup *old_chain; |
876fa593 | 2060 | struct bp_location *b, **bp_tmp; |
c906108c | 2061 | int val; |
a4954f26 | 2062 | struct ui_file *tmp_error_stream = mem_fileopen (); |
fa3a767f | 2063 | int dummy1 = 0, dummy2 = 0; |
6c95b8df PA |
2064 | struct inferior *inf; |
2065 | struct thread_info *tp; | |
2066 | ||
2067 | tp = any_live_thread_of_process (pid); | |
2068 | if (tp == NULL) | |
2069 | return 1; | |
2070 | ||
2071 | inf = find_inferior_pid (pid); | |
2072 | old_chain = save_inferior_ptid (); | |
2073 | ||
2074 | inferior_ptid = tp->ptid; | |
a4954f26 DJ |
2075 | |
2076 | make_cleanup_ui_file_delete (tmp_error_stream); | |
c906108c | 2077 | |
876fa593 | 2078 | ALL_BP_LOCATIONS (b, bp_tmp) |
c5aa993b | 2079 | { |
6c95b8df PA |
2080 | if (b->pspace != inf->pspace) |
2081 | continue; | |
2082 | ||
0bde7532 | 2083 | if (b->inserted) |
c5aa993b | 2084 | { |
a4954f26 DJ |
2085 | b->inserted = 0; |
2086 | val = insert_bp_location (b, tmp_error_stream, | |
fa3a767f | 2087 | &dummy1, &dummy2); |
c5aa993b JM |
2088 | if (val != 0) |
2089 | { | |
ce696e05 | 2090 | do_cleanups (old_chain); |
c5aa993b JM |
2091 | return val; |
2092 | } | |
2093 | } | |
2094 | } | |
ce696e05 | 2095 | do_cleanups (old_chain); |
c906108c SS |
2096 | return 0; |
2097 | } | |
2098 | ||
e58b0e63 PA |
2099 | static int internal_breakpoint_number = -1; |
2100 | ||
e62c965a | 2101 | static struct breakpoint * |
a6d9a66e UW |
2102 | create_internal_breakpoint (struct gdbarch *gdbarch, |
2103 | CORE_ADDR address, enum bptype type) | |
e62c965a | 2104 | { |
e62c965a PP |
2105 | struct symtab_and_line sal; |
2106 | struct breakpoint *b; | |
2107 | ||
2108 | init_sal (&sal); /* initialize to zeroes */ | |
2109 | ||
2110 | sal.pc = address; | |
2111 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 2112 | sal.pspace = current_program_space; |
e62c965a | 2113 | |
a6d9a66e | 2114 | b = set_raw_breakpoint (gdbarch, sal, type); |
e62c965a PP |
2115 | b->number = internal_breakpoint_number--; |
2116 | b->disposition = disp_donttouch; | |
2117 | ||
2118 | return b; | |
2119 | } | |
2120 | ||
2121 | static void | |
69de3c6a | 2122 | create_overlay_event_breakpoint (char *func_name) |
e62c965a | 2123 | { |
69de3c6a | 2124 | struct objfile *objfile; |
e62c965a | 2125 | |
69de3c6a PP |
2126 | ALL_OBJFILES (objfile) |
2127 | { | |
2128 | struct breakpoint *b; | |
2129 | struct minimal_symbol *m; | |
2130 | ||
2131 | m = lookup_minimal_symbol_text (func_name, objfile); | |
2132 | if (m == NULL) | |
2133 | continue; | |
e62c965a | 2134 | |
a6d9a66e UW |
2135 | b = create_internal_breakpoint (get_objfile_arch (objfile), |
2136 | SYMBOL_VALUE_ADDRESS (m), | |
69de3c6a PP |
2137 | bp_overlay_event); |
2138 | b->addr_string = xstrdup (func_name); | |
e62c965a | 2139 | |
69de3c6a PP |
2140 | if (overlay_debugging == ovly_auto) |
2141 | { | |
2142 | b->enable_state = bp_enabled; | |
2143 | overlay_events_enabled = 1; | |
2144 | } | |
2145 | else | |
2146 | { | |
2147 | b->enable_state = bp_disabled; | |
2148 | overlay_events_enabled = 0; | |
2149 | } | |
e62c965a PP |
2150 | } |
2151 | update_global_location_list (1); | |
2152 | } | |
2153 | ||
0fd8e87f UW |
2154 | static void |
2155 | create_longjmp_master_breakpoint (char *func_name) | |
2156 | { | |
6c95b8df | 2157 | struct program_space *pspace; |
0fd8e87f | 2158 | struct objfile *objfile; |
6c95b8df PA |
2159 | struct cleanup *old_chain; |
2160 | ||
2161 | old_chain = save_current_program_space (); | |
0fd8e87f | 2162 | |
6c95b8df | 2163 | ALL_PSPACES (pspace) |
0fd8e87f UW |
2164 | ALL_OBJFILES (objfile) |
2165 | { | |
2166 | struct breakpoint *b; | |
2167 | struct minimal_symbol *m; | |
2168 | ||
2169 | if (!gdbarch_get_longjmp_target_p (get_objfile_arch (objfile))) | |
2170 | continue; | |
2171 | ||
6c95b8df PA |
2172 | set_current_program_space (pspace); |
2173 | ||
0fd8e87f UW |
2174 | m = lookup_minimal_symbol_text (func_name, objfile); |
2175 | if (m == NULL) | |
2176 | continue; | |
2177 | ||
a6d9a66e UW |
2178 | b = create_internal_breakpoint (get_objfile_arch (objfile), |
2179 | SYMBOL_VALUE_ADDRESS (m), | |
0fd8e87f UW |
2180 | bp_longjmp_master); |
2181 | b->addr_string = xstrdup (func_name); | |
2182 | b->enable_state = bp_disabled; | |
2183 | } | |
2184 | update_global_location_list (1); | |
6c95b8df PA |
2185 | |
2186 | do_cleanups (old_chain); | |
0fd8e87f UW |
2187 | } |
2188 | ||
aa7d318d TT |
2189 | /* Create a master std::terminate breakpoint. The actual function |
2190 | looked for is named FUNC_NAME. */ | |
2191 | static void | |
2192 | create_std_terminate_master_breakpoint (const char *func_name) | |
2193 | { | |
2194 | struct program_space *pspace; | |
2195 | struct objfile *objfile; | |
2196 | struct cleanup *old_chain; | |
2197 | ||
2198 | old_chain = save_current_program_space (); | |
2199 | ||
2200 | ALL_PSPACES (pspace) | |
2201 | ALL_OBJFILES (objfile) | |
2202 | { | |
2203 | struct breakpoint *b; | |
2204 | struct minimal_symbol *m; | |
2205 | ||
2206 | set_current_program_space (pspace); | |
2207 | ||
2208 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
2209 | if (m == NULL || (MSYMBOL_TYPE (m) != mst_text | |
2210 | && MSYMBOL_TYPE (m) != mst_file_text)) | |
2211 | continue; | |
2212 | ||
2213 | b = create_internal_breakpoint (get_objfile_arch (objfile), | |
2214 | SYMBOL_VALUE_ADDRESS (m), | |
2215 | bp_std_terminate_master); | |
2216 | b->addr_string = xstrdup (func_name); | |
2217 | b->enable_state = bp_disabled; | |
2218 | } | |
2219 | update_global_location_list (1); | |
2220 | ||
2221 | do_cleanups (old_chain); | |
2222 | } | |
2223 | ||
c906108c | 2224 | void |
fba45db2 | 2225 | update_breakpoints_after_exec (void) |
c906108c | 2226 | { |
c5aa993b JM |
2227 | struct breakpoint *b; |
2228 | struct breakpoint *temp; | |
876fa593 | 2229 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 2230 | |
25b22b0a PA |
2231 | /* We're about to delete breakpoints from GDB's lists. If the |
2232 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
2233 | writing the breakpoints' "shadow contents" back into memory. The | |
2234 | "shadow contents" are NOT valid after an exec, so GDB should not | |
2235 | do that. Instead, the target is responsible from marking | |
2236 | breakpoints out as soon as it detects an exec. We don't do that | |
2237 | here instead, because there may be other attempts to delete | |
2238 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 2239 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
2240 | if (bploc->pspace == current_program_space) |
2241 | gdb_assert (!bploc->inserted); | |
c906108c SS |
2242 | |
2243 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 2244 | { |
6c95b8df PA |
2245 | if (b->pspace != current_program_space) |
2246 | continue; | |
2247 | ||
c5aa993b JM |
2248 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
2249 | if (b->type == bp_shlib_event) | |
2250 | { | |
2251 | delete_breakpoint (b); | |
2252 | continue; | |
2253 | } | |
c906108c | 2254 | |
4efc6507 DE |
2255 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
2256 | if (b->type == bp_jit_event) | |
2257 | { | |
2258 | delete_breakpoint (b); | |
2259 | continue; | |
2260 | } | |
2261 | ||
1900040c | 2262 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
2263 | as must overlay event and longjmp master breakpoints. */ |
2264 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
aa7d318d | 2265 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master) |
c4093a6a JM |
2266 | { |
2267 | delete_breakpoint (b); | |
2268 | continue; | |
2269 | } | |
2270 | ||
c5aa993b JM |
2271 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2272 | if (b->type == bp_step_resume) | |
2273 | { | |
2274 | delete_breakpoint (b); | |
2275 | continue; | |
2276 | } | |
2277 | ||
611c83ae PA |
2278 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
2279 | after an exec. */ | |
2280 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume) | |
2281 | { | |
2282 | delete_breakpoint (b); | |
2283 | continue; | |
2284 | } | |
2285 | ||
ce78b96d JB |
2286 | if (b->type == bp_catchpoint) |
2287 | { | |
2288 | /* For now, none of the bp_catchpoint breakpoints need to | |
2289 | do anything at this point. In the future, if some of | |
2290 | the catchpoints need to something, we will need to add | |
2291 | a new method, and call this method from here. */ | |
2292 | continue; | |
2293 | } | |
2294 | ||
c5aa993b JM |
2295 | /* bp_finish is a special case. The only way we ought to be able |
2296 | to see one of these when an exec() has happened, is if the user | |
2297 | caught a vfork, and then said "finish". Ordinarily a finish just | |
2298 | carries them to the call-site of the current callee, by setting | |
2299 | a temporary bp there and resuming. But in this case, the finish | |
2300 | will carry them entirely through the vfork & exec. | |
2301 | ||
2302 | We don't want to allow a bp_finish to remain inserted now. But | |
2303 | we can't safely delete it, 'cause finish_command has a handle to | |
2304 | the bp on a bpstat, and will later want to delete it. There's a | |
2305 | chance (and I've seen it happen) that if we delete the bp_finish | |
2306 | here, that its storage will get reused by the time finish_command | |
2307 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
2308 | We really must allow finish_command to delete a bp_finish. | |
2309 | ||
53a5351d JM |
2310 | In the absense of a general solution for the "how do we know |
2311 | it's safe to delete something others may have handles to?" | |
2312 | problem, what we'll do here is just uninsert the bp_finish, and | |
2313 | let finish_command delete it. | |
2314 | ||
2315 | (We know the bp_finish is "doomed" in the sense that it's | |
2316 | momentary, and will be deleted as soon as finish_command sees | |
2317 | the inferior stopped. So it doesn't matter that the bp's | |
2318 | address is probably bogus in the new a.out, unlike e.g., the | |
2319 | solib breakpoints.) */ | |
c5aa993b | 2320 | |
c5aa993b JM |
2321 | if (b->type == bp_finish) |
2322 | { | |
2323 | continue; | |
2324 | } | |
2325 | ||
2326 | /* Without a symbolic address, we have little hope of the | |
2327 | pre-exec() address meaning the same thing in the post-exec() | |
2328 | a.out. */ | |
2329 | if (b->addr_string == NULL) | |
2330 | { | |
2331 | delete_breakpoint (b); | |
2332 | continue; | |
2333 | } | |
c5aa993b | 2334 | } |
1900040c | 2335 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
69de3c6a | 2336 | create_overlay_event_breakpoint ("_ovly_debug_event"); |
0fd8e87f UW |
2337 | create_longjmp_master_breakpoint ("longjmp"); |
2338 | create_longjmp_master_breakpoint ("_longjmp"); | |
2339 | create_longjmp_master_breakpoint ("siglongjmp"); | |
2340 | create_longjmp_master_breakpoint ("_siglongjmp"); | |
aa7d318d | 2341 | create_std_terminate_master_breakpoint ("std::terminate()"); |
c906108c SS |
2342 | } |
2343 | ||
2344 | int | |
fba45db2 | 2345 | detach_breakpoints (int pid) |
c906108c | 2346 | { |
876fa593 | 2347 | struct bp_location *b, **bp_tmp; |
3a1bae8e | 2348 | int val = 0; |
ce696e05 | 2349 | struct cleanup *old_chain = save_inferior_ptid (); |
6c95b8df | 2350 | struct inferior *inf = current_inferior (); |
c5aa993b | 2351 | |
39f77062 | 2352 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 2353 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 2354 | |
6c95b8df | 2355 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
ce696e05 | 2356 | inferior_ptid = pid_to_ptid (pid); |
876fa593 | 2357 | ALL_BP_LOCATIONS (b, bp_tmp) |
c5aa993b | 2358 | { |
6c95b8df PA |
2359 | if (b->pspace != inf->pspace) |
2360 | continue; | |
2361 | ||
0bde7532 | 2362 | if (b->inserted) |
6c95b8df | 2363 | val |= remove_breakpoint_1 (b, mark_inserted); |
c5aa993b | 2364 | } |
ce696e05 | 2365 | do_cleanups (old_chain); |
3a1bae8e | 2366 | return val; |
c906108c SS |
2367 | } |
2368 | ||
6c95b8df PA |
2369 | /* Remove the breakpoint location B from the current address space. |
2370 | Note that this is used to detach breakpoints from a child fork. | |
2371 | When we get here, the child isn't in the inferior list, and neither | |
2372 | do we have objects to represent its address space --- we should | |
2373 | *not* look at b->pspace->aspace here. */ | |
2374 | ||
c906108c | 2375 | static int |
6c95b8df | 2376 | remove_breakpoint_1 (struct bp_location *b, insertion_state_t is) |
c906108c SS |
2377 | { |
2378 | int val; | |
6c95b8df | 2379 | struct cleanup *old_chain; |
c5aa993b | 2380 | |
0bde7532 | 2381 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
2382 | /* Permanent breakpoints cannot be inserted or removed. */ |
2383 | return 0; | |
2384 | ||
74960c60 VP |
2385 | /* The type of none suggests that owner is actually deleted. |
2386 | This should not ever happen. */ | |
2387 | gdb_assert (b->owner->type != bp_none); | |
0bde7532 DJ |
2388 | |
2389 | if (b->loc_type == bp_loc_software_breakpoint | |
2390 | || b->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 2391 | { |
c02f5703 MS |
2392 | /* "Normal" instruction breakpoint: either the standard |
2393 | trap-instruction bp (bp_breakpoint), or a | |
2394 | bp_hardware_breakpoint. */ | |
2395 | ||
2396 | /* First check to see if we have to handle an overlay. */ | |
2397 | if (overlay_debugging == ovly_off | |
0bde7532 DJ |
2398 | || b->section == NULL |
2399 | || !(section_is_overlay (b->section))) | |
c02f5703 MS |
2400 | { |
2401 | /* No overlay handling: just remove the breakpoint. */ | |
2402 | ||
0bde7532 | 2403 | if (b->loc_type == bp_loc_hardware_breakpoint) |
a6d9a66e | 2404 | val = target_remove_hw_breakpoint (b->gdbarch, &b->target_info); |
c02f5703 | 2405 | else |
a6d9a66e | 2406 | val = target_remove_breakpoint (b->gdbarch, &b->target_info); |
c02f5703 | 2407 | } |
c906108c SS |
2408 | else |
2409 | { | |
c02f5703 MS |
2410 | /* This breakpoint is in an overlay section. |
2411 | Did we set a breakpoint at the LMA? */ | |
2412 | if (!overlay_events_enabled) | |
2413 | { | |
2414 | /* Yes -- overlay event support is not active, so we | |
2415 | should have set a breakpoint at the LMA. Remove it. | |
2416 | */ | |
c02f5703 MS |
2417 | /* Ignore any failures: if the LMA is in ROM, we will |
2418 | have already warned when we failed to insert it. */ | |
0bde7532 | 2419 | if (b->loc_type == bp_loc_hardware_breakpoint) |
a6d9a66e UW |
2420 | target_remove_hw_breakpoint (b->gdbarch, |
2421 | &b->overlay_target_info); | |
c02f5703 | 2422 | else |
a6d9a66e UW |
2423 | target_remove_breakpoint (b->gdbarch, |
2424 | &b->overlay_target_info); | |
c02f5703 MS |
2425 | } |
2426 | /* Did we set a breakpoint at the VMA? | |
2427 | If so, we will have marked the breakpoint 'inserted'. */ | |
0bde7532 | 2428 | if (b->inserted) |
c906108c | 2429 | { |
c02f5703 MS |
2430 | /* Yes -- remove it. Previously we did not bother to |
2431 | remove the breakpoint if the section had been | |
2432 | unmapped, but let's not rely on that being safe. We | |
2433 | don't know what the overlay manager might do. */ | |
0bde7532 | 2434 | if (b->loc_type == bp_loc_hardware_breakpoint) |
a6d9a66e UW |
2435 | val = target_remove_hw_breakpoint (b->gdbarch, |
2436 | &b->target_info); | |
aa67235e UW |
2437 | |
2438 | /* However, we should remove *software* breakpoints only | |
2439 | if the section is still mapped, or else we overwrite | |
2440 | wrong code with the saved shadow contents. */ | |
2441 | else if (section_is_mapped (b->section)) | |
a6d9a66e UW |
2442 | val = target_remove_breakpoint (b->gdbarch, |
2443 | &b->target_info); | |
aa67235e UW |
2444 | else |
2445 | val = 0; | |
c906108c | 2446 | } |
c02f5703 MS |
2447 | else |
2448 | { | |
2449 | /* No -- not inserted, so no need to remove. No error. */ | |
2450 | val = 0; | |
2451 | } | |
c906108c | 2452 | } |
879d1e6b UW |
2453 | |
2454 | /* In some cases, we might not be able to remove a breakpoint | |
2455 | in a shared library that has already been removed, but we | |
2456 | have not yet processed the shlib unload event. */ | |
6c95b8df | 2457 | if (val && solib_name_from_address (b->pspace, b->address)) |
879d1e6b UW |
2458 | val = 0; |
2459 | ||
c906108c SS |
2460 | if (val) |
2461 | return val; | |
0bde7532 | 2462 | b->inserted = (is == mark_inserted); |
c906108c | 2463 | } |
a5606eee | 2464 | else if (b->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 2465 | { |
278cd55f AC |
2466 | struct value *v; |
2467 | struct value *n; | |
c5aa993b | 2468 | |
0bde7532 | 2469 | b->inserted = (is == mark_inserted); |
a5606eee VP |
2470 | val = target_remove_watchpoint (b->address, b->length, |
2471 | b->watchpoint_type); | |
2e70b7b9 | 2472 | |
c906108c | 2473 | /* Failure to remove any of the hardware watchpoints comes here. */ |
0bde7532 | 2474 | if ((is == mark_uninserted) && (b->inserted)) |
8a3fe4f8 | 2475 | warning (_("Could not remove hardware watchpoint %d."), |
0bde7532 | 2476 | b->owner->number); |
c906108c | 2477 | } |
ce78b96d JB |
2478 | else if (b->owner->type == bp_catchpoint |
2479 | && breakpoint_enabled (b->owner) | |
2480 | && !b->duplicate) | |
2481 | { | |
2482 | gdb_assert (b->owner->ops != NULL && b->owner->ops->remove != NULL); | |
2483 | ||
2484 | val = b->owner->ops->remove (b->owner); | |
2485 | if (val) | |
2486 | return val; | |
2487 | b->inserted = (is == mark_inserted); | |
2488 | } | |
c906108c SS |
2489 | |
2490 | return 0; | |
2491 | } | |
2492 | ||
6c95b8df PA |
2493 | static int |
2494 | remove_breakpoint (struct bp_location *b, insertion_state_t is) | |
2495 | { | |
2496 | int ret; | |
2497 | struct cleanup *old_chain; | |
2498 | ||
2499 | if (b->owner->enable_state == bp_permanent) | |
2500 | /* Permanent breakpoints cannot be inserted or removed. */ | |
2501 | return 0; | |
2502 | ||
2503 | /* The type of none suggests that owner is actually deleted. | |
2504 | This should not ever happen. */ | |
2505 | gdb_assert (b->owner->type != bp_none); | |
2506 | ||
2507 | old_chain = save_current_space_and_thread (); | |
2508 | ||
2509 | switch_to_program_space_and_thread (b->pspace); | |
2510 | ||
2511 | ret = remove_breakpoint_1 (b, is); | |
2512 | ||
2513 | do_cleanups (old_chain); | |
2514 | return ret; | |
2515 | } | |
2516 | ||
c906108c SS |
2517 | /* Clear the "inserted" flag in all breakpoints. */ |
2518 | ||
25b22b0a | 2519 | void |
fba45db2 | 2520 | mark_breakpoints_out (void) |
c906108c | 2521 | { |
876fa593 | 2522 | struct bp_location *bpt, **bptp_tmp; |
c906108c | 2523 | |
876fa593 | 2524 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
6c95b8df PA |
2525 | if (bpt->pspace == current_program_space) |
2526 | bpt->inserted = 0; | |
c906108c SS |
2527 | } |
2528 | ||
53a5351d JM |
2529 | /* Clear the "inserted" flag in all breakpoints and delete any |
2530 | breakpoints which should go away between runs of the program. | |
c906108c SS |
2531 | |
2532 | Plus other such housekeeping that has to be done for breakpoints | |
2533 | between runs. | |
2534 | ||
53a5351d JM |
2535 | Note: this function gets called at the end of a run (by |
2536 | generic_mourn_inferior) and when a run begins (by | |
2537 | init_wait_for_inferior). */ | |
c906108c SS |
2538 | |
2539 | ||
2540 | ||
2541 | void | |
fba45db2 | 2542 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 2543 | { |
52f0bd74 | 2544 | struct breakpoint *b, *temp; |
876fa593 | 2545 | struct bp_location *bpt, **bptp_tmp; |
1c5cfe86 | 2546 | int ix; |
6c95b8df | 2547 | struct program_space *pspace = current_program_space; |
c906108c | 2548 | |
50c71eaf PA |
2549 | /* If breakpoint locations are shared across processes, then there's |
2550 | nothing to do. */ | |
2567c7d9 | 2551 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
2552 | return; |
2553 | ||
876fa593 | 2554 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
6c95b8df PA |
2555 | { |
2556 | if (bpt->pspace == pspace | |
2557 | && bpt->owner->enable_state != bp_permanent) | |
514f746b | 2558 | bpt->inserted = 0; |
6c95b8df | 2559 | } |
075f6582 | 2560 | |
c906108c | 2561 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 2562 | { |
6c95b8df PA |
2563 | if (b->loc && b->loc->pspace != pspace) |
2564 | continue; | |
2565 | ||
c5aa993b JM |
2566 | switch (b->type) |
2567 | { | |
2568 | case bp_call_dummy: | |
c906108c | 2569 | |
c5aa993b | 2570 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
2571 | cause problems when the inferior is rerun, so we better get |
2572 | rid of it. */ | |
2573 | ||
2574 | case bp_watchpoint_scope: | |
2575 | ||
2576 | /* Also get rid of scope breakpoints. */ | |
2577 | ||
2578 | case bp_shlib_event: | |
2579 | ||
2580 | /* Also remove solib event breakpoints. Their addresses may | |
2581 | have changed since the last time we ran the program. | |
2582 | Actually we may now be debugging against different target; | |
2583 | and so the solib backend that installed this breakpoint may | |
2584 | not be used in by the target. E.g., | |
2585 | ||
2586 | (gdb) file prog-linux | |
2587 | (gdb) run # native linux target | |
2588 | ... | |
2589 | (gdb) kill | |
2590 | (gdb) file prog-win.exe | |
2591 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
2592 | */ | |
c906108c | 2593 | |
c5aa993b JM |
2594 | delete_breakpoint (b); |
2595 | break; | |
c906108c | 2596 | |
c5aa993b JM |
2597 | case bp_watchpoint: |
2598 | case bp_hardware_watchpoint: | |
2599 | case bp_read_watchpoint: | |
2600 | case bp_access_watchpoint: | |
c906108c | 2601 | |
c5aa993b JM |
2602 | /* Likewise for watchpoints on local expressions. */ |
2603 | if (b->exp_valid_block != NULL) | |
2604 | delete_breakpoint (b); | |
967af18d | 2605 | else if (context == inf_starting) |
c860120c PM |
2606 | { |
2607 | /* Reset val field to force reread of starting value | |
2608 | in insert_breakpoints. */ | |
2609 | if (b->val) | |
2610 | value_free (b->val); | |
2611 | b->val = NULL; | |
fa4727a6 | 2612 | b->val_valid = 0; |
c860120c | 2613 | } |
c5aa993b JM |
2614 | break; |
2615 | default: | |
c5aa993b JM |
2616 | break; |
2617 | } | |
2618 | } | |
1c5cfe86 PA |
2619 | |
2620 | /* Get rid of the moribund locations. */ | |
2621 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bpt); ++ix) | |
2622 | free_bp_location (bpt); | |
2623 | VEC_free (bp_location_p, moribund_locations); | |
c906108c SS |
2624 | } |
2625 | ||
6c95b8df PA |
2626 | /* These functions concern about actual breakpoints inserted in the |
2627 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
2628 | we need to hop over the bkpt --- so we check for address space | |
2629 | match, not program space. */ | |
2630 | ||
c2c6d25f JM |
2631 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
2632 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
2633 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
2634 | permanent breakpoint. | |
2635 | - When continuing from a location with an ordinary breakpoint, we | |
2636 | actually single step once before calling insert_breakpoints. | |
2637 | - When continuing from a localion with a permanent breakpoint, we | |
2638 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
2639 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 2640 | |
c2c6d25f | 2641 | enum breakpoint_here |
6c95b8df | 2642 | breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 2643 | { |
876fa593 | 2644 | struct bp_location *bpt, **bptp_tmp; |
c2c6d25f | 2645 | int any_breakpoint_here = 0; |
c906108c | 2646 | |
876fa593 | 2647 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
075f6582 DJ |
2648 | { |
2649 | if (bpt->loc_type != bp_loc_software_breakpoint | |
2650 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
2651 | continue; | |
2652 | ||
468d015d | 2653 | if ((breakpoint_enabled (bpt->owner) |
075f6582 | 2654 | || bpt->owner->enable_state == bp_permanent) |
6c95b8df PA |
2655 | && breakpoint_address_match (bpt->pspace->aspace, bpt->address, |
2656 | aspace, pc)) | |
075f6582 DJ |
2657 | { |
2658 | if (overlay_debugging | |
2659 | && section_is_overlay (bpt->section) | |
2660 | && !section_is_mapped (bpt->section)) | |
2661 | continue; /* unmapped overlay -- can't be a match */ | |
2662 | else if (bpt->owner->enable_state == bp_permanent) | |
2663 | return permanent_breakpoint_here; | |
2664 | else | |
2665 | any_breakpoint_here = 1; | |
2666 | } | |
2667 | } | |
c906108c | 2668 | |
c2c6d25f | 2669 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
2670 | } |
2671 | ||
1c5cfe86 PA |
2672 | /* Return true if there's a moribund breakpoint at PC. */ |
2673 | ||
2674 | int | |
6c95b8df | 2675 | moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
2676 | { |
2677 | struct bp_location *loc; | |
2678 | int ix; | |
2679 | ||
2680 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
6c95b8df PA |
2681 | if (breakpoint_address_match (loc->pspace->aspace, loc->address, |
2682 | aspace, pc)) | |
1c5cfe86 PA |
2683 | return 1; |
2684 | ||
2685 | return 0; | |
2686 | } | |
c2c6d25f | 2687 | |
c36b740a | 2688 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
876fa593 | 2689 | inserted using regular breakpoint_chain / bp_location array mechanism. |
c36b740a VP |
2690 | This does not check for single-step breakpoints, which are |
2691 | inserted and removed using direct target manipulation. */ | |
c906108c SS |
2692 | |
2693 | int | |
6c95b8df | 2694 | regular_breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 2695 | { |
876fa593 | 2696 | struct bp_location *bpt, **bptp_tmp; |
c906108c | 2697 | |
876fa593 | 2698 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
c5aa993b | 2699 | { |
075f6582 DJ |
2700 | if (bpt->loc_type != bp_loc_software_breakpoint |
2701 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
2702 | continue; | |
2703 | ||
2704 | if (bpt->inserted | |
6c95b8df PA |
2705 | && breakpoint_address_match (bpt->pspace->aspace, bpt->address, |
2706 | aspace, pc)) | |
075f6582 DJ |
2707 | { |
2708 | if (overlay_debugging | |
2709 | && section_is_overlay (bpt->section) | |
2710 | && !section_is_mapped (bpt->section)) | |
2711 | continue; /* unmapped overlay -- can't be a match */ | |
2712 | else | |
2713 | return 1; | |
2714 | } | |
c5aa993b | 2715 | } |
c36b740a VP |
2716 | return 0; |
2717 | } | |
2718 | ||
2719 | /* Returns non-zero iff there's either regular breakpoint | |
2720 | or a single step breakpoint inserted at PC. */ | |
2721 | ||
2722 | int | |
6c95b8df | 2723 | breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c36b740a | 2724 | { |
6c95b8df | 2725 | if (regular_breakpoint_inserted_here_p (aspace, pc)) |
c36b740a | 2726 | return 1; |
c906108c | 2727 | |
6c95b8df | 2728 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
2729 | return 1; |
2730 | ||
c906108c SS |
2731 | return 0; |
2732 | } | |
2733 | ||
4fa8626c DJ |
2734 | /* This function returns non-zero iff there is a software breakpoint |
2735 | inserted at PC. */ | |
2736 | ||
2737 | int | |
6c95b8df | 2738 | software_breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
4fa8626c | 2739 | { |
876fa593 | 2740 | struct bp_location *bpt, **bptp_tmp; |
4fa8626c DJ |
2741 | int any_breakpoint_here = 0; |
2742 | ||
876fa593 | 2743 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
4fa8626c DJ |
2744 | { |
2745 | if (bpt->loc_type != bp_loc_software_breakpoint) | |
2746 | continue; | |
2747 | ||
0d381245 | 2748 | if (bpt->inserted |
6c95b8df PA |
2749 | && breakpoint_address_match (bpt->pspace->aspace, bpt->address, |
2750 | aspace, pc)) | |
4fa8626c DJ |
2751 | { |
2752 | if (overlay_debugging | |
2753 | && section_is_overlay (bpt->section) | |
2754 | && !section_is_mapped (bpt->section)) | |
2755 | continue; /* unmapped overlay -- can't be a match */ | |
2756 | else | |
2757 | return 1; | |
2758 | } | |
2759 | } | |
2760 | ||
1aafd4da | 2761 | /* Also check for software single-step breakpoints. */ |
6c95b8df | 2762 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
2763 | return 1; |
2764 | ||
4fa8626c DJ |
2765 | return 0; |
2766 | } | |
2767 | ||
9093389c PA |
2768 | int |
2769 | hardware_watchpoint_inserted_in_range (struct address_space *aspace, | |
2770 | CORE_ADDR addr, ULONGEST len) | |
2771 | { | |
2772 | struct breakpoint *bpt; | |
2773 | ||
2774 | ALL_BREAKPOINTS (bpt) | |
2775 | { | |
2776 | struct bp_location *loc; | |
2777 | ||
2778 | if (bpt->type != bp_hardware_watchpoint | |
2779 | && bpt->type != bp_access_watchpoint) | |
2780 | continue; | |
2781 | ||
2782 | if (!breakpoint_enabled (bpt)) | |
2783 | continue; | |
2784 | ||
2785 | for (loc = bpt->loc; loc; loc = loc->next) | |
2786 | if (loc->pspace->aspace == aspace && loc->inserted) | |
2787 | { | |
2788 | CORE_ADDR l, h; | |
2789 | ||
2790 | /* Check for intersection. */ | |
2791 | l = max (loc->address, addr); | |
2792 | h = min (loc->address + loc->length, addr + len); | |
2793 | if (l < h) | |
2794 | return 1; | |
2795 | } | |
2796 | } | |
2797 | return 0; | |
2798 | } | |
2799 | ||
075f6582 DJ |
2800 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
2801 | PC is valid for process/thread PTID. */ | |
c906108c SS |
2802 | |
2803 | int | |
6c95b8df PA |
2804 | breakpoint_thread_match (struct address_space *aspace, CORE_ADDR pc, |
2805 | ptid_t ptid) | |
c906108c | 2806 | { |
876fa593 | 2807 | struct bp_location *bpt, **bptp_tmp; |
4a306c9a | 2808 | /* The thread and task IDs associated to PTID, computed lazily. */ |
a6f1cd96 | 2809 | int thread = -1; |
4a306c9a | 2810 | int task = 0; |
a6f1cd96 | 2811 | |
876fa593 | 2812 | ALL_BP_LOCATIONS (bpt, bptp_tmp) |
c5aa993b | 2813 | { |
075f6582 DJ |
2814 | if (bpt->loc_type != bp_loc_software_breakpoint |
2815 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
2816 | continue; | |
2817 | ||
a6f1cd96 JB |
2818 | if (!breakpoint_enabled (bpt->owner) |
2819 | && bpt->owner->enable_state != bp_permanent) | |
2820 | continue; | |
2821 | ||
6c95b8df PA |
2822 | if (!breakpoint_address_match (bpt->pspace->aspace, bpt->address, |
2823 | aspace, pc)) | |
a6f1cd96 JB |
2824 | continue; |
2825 | ||
2826 | if (bpt->owner->thread != -1) | |
075f6582 | 2827 | { |
a6f1cd96 JB |
2828 | /* This is a thread-specific breakpoint. Check that ptid |
2829 | matches that thread. If thread hasn't been computed yet, | |
2830 | it is now time to do so. */ | |
2831 | if (thread == -1) | |
2832 | thread = pid_to_thread_id (ptid); | |
2833 | if (bpt->owner->thread != thread) | |
2834 | continue; | |
075f6582 | 2835 | } |
a6f1cd96 | 2836 | |
4a306c9a JB |
2837 | if (bpt->owner->task != 0) |
2838 | { | |
2839 | /* This is a task-specific breakpoint. Check that ptid | |
2840 | matches that task. If task hasn't been computed yet, | |
2841 | it is now time to do so. */ | |
2842 | if (task == 0) | |
2843 | task = ada_get_task_number (ptid); | |
2844 | if (bpt->owner->task != task) | |
2845 | continue; | |
2846 | } | |
2847 | ||
a6f1cd96 JB |
2848 | if (overlay_debugging |
2849 | && section_is_overlay (bpt->section) | |
2850 | && !section_is_mapped (bpt->section)) | |
2851 | continue; /* unmapped overlay -- can't be a match */ | |
2852 | ||
2853 | return 1; | |
c5aa993b | 2854 | } |
c906108c SS |
2855 | |
2856 | return 0; | |
2857 | } | |
c906108c | 2858 | \f |
c5aa993b | 2859 | |
c906108c SS |
2860 | /* bpstat stuff. External routines' interfaces are documented |
2861 | in breakpoint.h. */ | |
2862 | ||
2863 | int | |
fba45db2 | 2864 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c | 2865 | { |
533be4dd | 2866 | return (ep->type == bp_catchpoint); |
c906108c SS |
2867 | } |
2868 | ||
198757a8 VP |
2869 | void |
2870 | bpstat_free (bpstat bs) | |
2871 | { | |
2872 | if (bs->old_val != NULL) | |
2873 | value_free (bs->old_val); | |
9add0f1b | 2874 | decref_counted_command_line (&bs->commands); |
198757a8 VP |
2875 | xfree (bs); |
2876 | } | |
2877 | ||
c906108c SS |
2878 | /* Clear a bpstat so that it says we are not at any breakpoint. |
2879 | Also free any storage that is part of a bpstat. */ | |
2880 | ||
2881 | void | |
fba45db2 | 2882 | bpstat_clear (bpstat *bsp) |
c906108c SS |
2883 | { |
2884 | bpstat p; | |
2885 | bpstat q; | |
2886 | ||
2887 | if (bsp == 0) | |
2888 | return; | |
2889 | p = *bsp; | |
2890 | while (p != NULL) | |
2891 | { | |
2892 | q = p->next; | |
198757a8 | 2893 | bpstat_free (p); |
c906108c SS |
2894 | p = q; |
2895 | } | |
2896 | *bsp = NULL; | |
2897 | } | |
2898 | ||
2899 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
2900 | is part of the bpstat is copied as well. */ | |
2901 | ||
2902 | bpstat | |
fba45db2 | 2903 | bpstat_copy (bpstat bs) |
c906108c SS |
2904 | { |
2905 | bpstat p = NULL; | |
2906 | bpstat tmp; | |
2907 | bpstat retval = NULL; | |
2908 | ||
2909 | if (bs == NULL) | |
2910 | return bs; | |
2911 | ||
2912 | for (; bs != NULL; bs = bs->next) | |
2913 | { | |
2914 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
2915 | memcpy (tmp, bs, sizeof (*tmp)); | |
9add0f1b | 2916 | incref_counted_command_line (tmp->commands); |
31cc81e9 | 2917 | if (bs->old_val != NULL) |
3c3185ac JK |
2918 | { |
2919 | tmp->old_val = value_copy (bs->old_val); | |
2920 | release_value (tmp->old_val); | |
2921 | } | |
31cc81e9 | 2922 | |
c906108c SS |
2923 | if (p == NULL) |
2924 | /* This is the first thing in the chain. */ | |
2925 | retval = tmp; | |
2926 | else | |
2927 | p->next = tmp; | |
2928 | p = tmp; | |
2929 | } | |
2930 | p->next = NULL; | |
2931 | return retval; | |
2932 | } | |
2933 | ||
2934 | /* Find the bpstat associated with this breakpoint */ | |
2935 | ||
2936 | bpstat | |
fba45db2 | 2937 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 2938 | { |
c5aa993b JM |
2939 | if (bsp == NULL) |
2940 | return NULL; | |
c906108c | 2941 | |
c5aa993b JM |
2942 | for (; bsp != NULL; bsp = bsp->next) |
2943 | { | |
4f8d1dc6 | 2944 | if (bsp->breakpoint_at && bsp->breakpoint_at->owner == breakpoint) |
c5aa993b JM |
2945 | return bsp; |
2946 | } | |
c906108c SS |
2947 | return NULL; |
2948 | } | |
2949 | ||
2950 | /* Find a step_resume breakpoint associated with this bpstat. | |
2951 | (If there are multiple step_resume bp's on the list, this function | |
2952 | will arbitrarily pick one.) | |
2953 | ||
2954 | It is an error to use this function if BPSTAT doesn't contain a | |
2955 | step_resume breakpoint. | |
2956 | ||
2957 | See wait_for_inferior's use of this function. */ | |
2958 | struct breakpoint * | |
fba45db2 | 2959 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c | 2960 | { |
8601f500 MS |
2961 | int current_thread; |
2962 | ||
8a3fe4f8 | 2963 | gdb_assert (bsp != NULL); |
c906108c | 2964 | |
8601f500 MS |
2965 | current_thread = pid_to_thread_id (inferior_ptid); |
2966 | ||
c906108c SS |
2967 | for (; bsp != NULL; bsp = bsp->next) |
2968 | { | |
059fb39f PM |
2969 | if ((bsp->breakpoint_at != NULL) |
2970 | && (bsp->breakpoint_at->owner->type == bp_step_resume) | |
2971 | && (bsp->breakpoint_at->owner->thread == current_thread | |
2972 | || bsp->breakpoint_at->owner->thread == -1)) | |
4f8d1dc6 | 2973 | return bsp->breakpoint_at->owner; |
c906108c SS |
2974 | } |
2975 | ||
8a3fe4f8 | 2976 | internal_error (__FILE__, __LINE__, _("No step_resume breakpoint found.")); |
c906108c SS |
2977 | } |
2978 | ||
2979 | ||
8671a17b | 2980 | /* Put in *NUM the breakpoint number of the first breakpoint we are stopped |
c906108c SS |
2981 | at. *BSP upon return is a bpstat which points to the remaining |
2982 | breakpoints stopped at (but which is not guaranteed to be good for | |
2983 | anything but further calls to bpstat_num). | |
8671a17b PA |
2984 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
2985 | Return -1 if stopped at a breakpoint that has been deleted since | |
2986 | we set it. | |
2987 | Return 1 otherwise. */ | |
c906108c SS |
2988 | |
2989 | int | |
8671a17b | 2990 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
2991 | { |
2992 | struct breakpoint *b; | |
2993 | ||
2994 | if ((*bsp) == NULL) | |
2995 | return 0; /* No more breakpoint values */ | |
8671a17b | 2996 | |
4f8d1dc6 VP |
2997 | /* We assume we'll never have several bpstats that |
2998 | correspond to a single breakpoint -- otherwise, | |
2999 | this function might return the same number more | |
3000 | than once and this will look ugly. */ | |
3001 | b = (*bsp)->breakpoint_at ? (*bsp)->breakpoint_at->owner : NULL; | |
8671a17b PA |
3002 | *bsp = (*bsp)->next; |
3003 | if (b == NULL) | |
3004 | return -1; /* breakpoint that's been deleted since */ | |
3005 | ||
3006 | *num = b->number; /* We have its number */ | |
3007 | return 1; | |
c906108c SS |
3008 | } |
3009 | ||
3010 | /* Modify BS so that the actions will not be performed. */ | |
3011 | ||
3012 | void | |
fba45db2 | 3013 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
3014 | { |
3015 | for (; bs != NULL; bs = bs->next) | |
3016 | { | |
9add0f1b | 3017 | decref_counted_command_line (&bs->commands); |
dde2d684 | 3018 | bs->commands_left = NULL; |
c906108c SS |
3019 | if (bs->old_val != NULL) |
3020 | { | |
3021 | value_free (bs->old_val); | |
3022 | bs->old_val = NULL; | |
3023 | } | |
3024 | } | |
3025 | } | |
3026 | ||
f3b1572e PA |
3027 | /* Called when a command is about to proceed the inferior. */ |
3028 | ||
3029 | static void | |
3030 | breakpoint_about_to_proceed (void) | |
3031 | { | |
3032 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
3033 | { | |
3034 | struct thread_info *tp = inferior_thread (); | |
3035 | ||
3036 | /* Allow inferior function calls in breakpoint commands to not | |
3037 | interrupt the command list. When the call finishes | |
3038 | successfully, the inferior will be standing at the same | |
3039 | breakpoint as if nothing happened. */ | |
3040 | if (tp->in_infcall) | |
3041 | return; | |
3042 | } | |
3043 | ||
3044 | breakpoint_proceeded = 1; | |
3045 | } | |
3046 | ||
c906108c | 3047 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ |
c906108c | 3048 | static void |
4efb68b1 | 3049 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
3050 | { |
3051 | executing_breakpoint_commands = 0; | |
3052 | } | |
3053 | ||
3054 | /* Execute all the commands associated with all the breakpoints at this | |
3055 | location. Any of these commands could cause the process to proceed | |
3056 | beyond this point, etc. We look out for such changes by checking | |
347bddb7 | 3057 | the global "breakpoint_proceeded" after each command. |
c906108c | 3058 | |
347bddb7 PA |
3059 | Returns true if a breakpoint command resumed the inferior. In that |
3060 | case, it is the caller's responsibility to recall it again with the | |
3061 | bpstat of the current thread. */ | |
3062 | ||
3063 | static int | |
3064 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
3065 | { |
3066 | bpstat bs; | |
3067 | struct cleanup *old_chain; | |
347bddb7 | 3068 | int again = 0; |
c906108c SS |
3069 | |
3070 | /* Avoid endless recursion if a `source' command is contained | |
3071 | in bs->commands. */ | |
3072 | if (executing_breakpoint_commands) | |
347bddb7 | 3073 | return 0; |
c906108c SS |
3074 | |
3075 | executing_breakpoint_commands = 1; | |
3076 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
3077 | ||
c906108c SS |
3078 | /* This pointer will iterate over the list of bpstat's. */ |
3079 | bs = *bsp; | |
3080 | ||
3081 | breakpoint_proceeded = 0; | |
3082 | for (; bs != NULL; bs = bs->next) | |
3083 | { | |
9add0f1b | 3084 | struct counted_command_line *ccmd; |
6c50ab1c JB |
3085 | struct command_line *cmd; |
3086 | struct cleanup *this_cmd_tree_chain; | |
3087 | ||
3088 | /* Take ownership of the BSP's command tree, if it has one. | |
3089 | ||
3090 | The command tree could legitimately contain commands like | |
3091 | 'step' and 'next', which call clear_proceed_status, which | |
3092 | frees stop_bpstat's command tree. To make sure this doesn't | |
3093 | free the tree we're executing out from under us, we need to | |
3094 | take ownership of the tree ourselves. Since a given bpstat's | |
3095 | commands are only executed once, we don't need to copy it; we | |
3096 | can clear the pointer in the bpstat, and make sure we free | |
3097 | the tree when we're done. */ | |
9add0f1b TT |
3098 | ccmd = bs->commands; |
3099 | bs->commands = NULL; | |
3100 | this_cmd_tree_chain | |
3101 | = make_cleanup_decref_counted_command_line (&ccmd); | |
3102 | cmd = bs->commands_left; | |
3103 | bs->commands_left = NULL; | |
6c50ab1c | 3104 | |
c906108c SS |
3105 | while (cmd != NULL) |
3106 | { | |
3107 | execute_control_command (cmd); | |
3108 | ||
3109 | if (breakpoint_proceeded) | |
3110 | break; | |
3111 | else | |
3112 | cmd = cmd->next; | |
3113 | } | |
6c50ab1c JB |
3114 | |
3115 | /* We can free this command tree now. */ | |
3116 | do_cleanups (this_cmd_tree_chain); | |
3117 | ||
c906108c | 3118 | if (breakpoint_proceeded) |
32c1e744 VP |
3119 | { |
3120 | if (target_can_async_p ()) | |
347bddb7 PA |
3121 | /* If we are in async mode, then the target might be still |
3122 | running, not stopped at any breakpoint, so nothing for | |
3123 | us to do here -- just return to the event loop. */ | |
3124 | ; | |
32c1e744 VP |
3125 | else |
3126 | /* In sync mode, when execute_control_command returns | |
3127 | we're already standing on the next breakpoint. | |
347bddb7 PA |
3128 | Breakpoint commands for that stop were not run, since |
3129 | execute_command does not run breakpoint commands -- | |
3130 | only command_line_handler does, but that one is not | |
3131 | involved in execution of breakpoint commands. So, we | |
3132 | can now execute breakpoint commands. It should be | |
3133 | noted that making execute_command do bpstat actions is | |
3134 | not an option -- in this case we'll have recursive | |
3135 | invocation of bpstat for each breakpoint with a | |
3136 | command, and can easily blow up GDB stack. Instead, we | |
3137 | return true, which will trigger the caller to recall us | |
3138 | with the new stop_bpstat. */ | |
3139 | again = 1; | |
3140 | break; | |
32c1e744 | 3141 | } |
c906108c | 3142 | } |
c2b8ed2c | 3143 | do_cleanups (old_chain); |
347bddb7 PA |
3144 | return again; |
3145 | } | |
3146 | ||
3147 | void | |
3148 | bpstat_do_actions (void) | |
3149 | { | |
3150 | /* Do any commands attached to breakpoint we are stopped at. */ | |
3151 | while (!ptid_equal (inferior_ptid, null_ptid) | |
3152 | && target_has_execution | |
3153 | && !is_exited (inferior_ptid) | |
3154 | && !is_executing (inferior_ptid)) | |
3155 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
3156 | and only return when it is stopped at the next breakpoint, we | |
3157 | keep doing breakpoint actions until it returns false to | |
3158 | indicate the inferior was not resumed. */ | |
3159 | if (!bpstat_do_actions_1 (&inferior_thread ()->stop_bpstat)) | |
3160 | break; | |
c906108c SS |
3161 | } |
3162 | ||
fa4727a6 DJ |
3163 | /* Print out the (old or new) value associated with a watchpoint. */ |
3164 | ||
3165 | static void | |
3166 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
3167 | { | |
3168 | if (val == NULL) | |
3169 | fprintf_unfiltered (stream, _("<unreadable>")); | |
3170 | else | |
79a45b7d TT |
3171 | { |
3172 | struct value_print_options opts; | |
3173 | get_user_print_options (&opts); | |
3174 | value_print (val, stream, &opts); | |
3175 | } | |
fa4727a6 DJ |
3176 | } |
3177 | ||
e514a9d6 | 3178 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 3179 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
3180 | by having it set different print_it values. |
3181 | ||
3182 | Current scheme: When we stop, bpstat_print() is called. It loops | |
3183 | through the bpstat list of things causing this stop, calling the | |
3184 | print_bp_stop_message function on each one. The behavior of the | |
3185 | print_bp_stop_message function depends on the print_it field of | |
3186 | bpstat. If such field so indicates, call this function here. | |
3187 | ||
3188 | Return values from this routine (ultimately used by bpstat_print() | |
3189 | and normal_stop() to decide what to do): | |
3190 | PRINT_NOTHING: Means we already printed all we needed to print, | |
3191 | don't print anything else. | |
3192 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
3193 | that something to be followed by a location. | |
3194 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
3195 | that something to be followed by a location. | |
3196 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
3197 | analysis. */ | |
c906108c | 3198 | |
917317f4 | 3199 | static enum print_stop_action |
fba45db2 | 3200 | print_it_typical (bpstat bs) |
c906108c | 3201 | { |
f7545552 | 3202 | struct cleanup *old_chain; |
4f8d1dc6 | 3203 | struct breakpoint *b; |
89f9893c | 3204 | const struct bp_location *bl; |
8b93c638 | 3205 | struct ui_stream *stb; |
f7545552 TT |
3206 | int bp_temp = 0; |
3207 | enum print_stop_action result; | |
3208 | ||
c906108c SS |
3209 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
3210 | which has since been deleted. */ | |
e514a9d6 | 3211 | if (bs->breakpoint_at == NULL) |
917317f4 | 3212 | return PRINT_UNKNOWN; |
0d381245 VP |
3213 | bl = bs->breakpoint_at; |
3214 | b = bl->owner; | |
c906108c | 3215 | |
f7545552 TT |
3216 | stb = ui_out_stream_new (uiout); |
3217 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3218 | ||
4f8d1dc6 | 3219 | switch (b->type) |
c906108c | 3220 | { |
e514a9d6 JM |
3221 | case bp_breakpoint: |
3222 | case bp_hardware_breakpoint: | |
2cec12e5 | 3223 | bp_temp = bs->breakpoint_at->owner->disposition == disp_del; |
0d381245 VP |
3224 | if (bl->address != bl->requested_address) |
3225 | breakpoint_adjustment_warning (bl->requested_address, | |
3226 | bl->address, | |
4f8d1dc6 VP |
3227 | b->number, 1); |
3228 | annotate_breakpoint (b->number); | |
2cec12e5 AR |
3229 | if (bp_temp) |
3230 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
3231 | else | |
3232 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 3233 | if (ui_out_is_mi_like_p (uiout)) |
2cec12e5 AR |
3234 | { |
3235 | ui_out_field_string (uiout, "reason", | |
3236 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
3237 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
3238 | } | |
4f8d1dc6 | 3239 | ui_out_field_int (uiout, "bkptno", b->number); |
8b93c638 | 3240 | ui_out_text (uiout, ", "); |
f7545552 | 3241 | result = PRINT_SRC_AND_LOC; |
e514a9d6 JM |
3242 | break; |
3243 | ||
3244 | case bp_shlib_event: | |
917317f4 JM |
3245 | /* Did we stop because the user set the stop_on_solib_events |
3246 | variable? (If so, we report this as a generic, "Stopped due | |
3247 | to shlib event" message.) */ | |
a3f17187 | 3248 | printf_filtered (_("Stopped due to shared library event\n")); |
f7545552 | 3249 | result = PRINT_NOTHING; |
e514a9d6 JM |
3250 | break; |
3251 | ||
c4093a6a JM |
3252 | case bp_thread_event: |
3253 | /* Not sure how we will get here. | |
3254 | GDB should not stop for these breakpoints. */ | |
a3f17187 | 3255 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 3256 | result = PRINT_NOTHING; |
c4093a6a JM |
3257 | break; |
3258 | ||
1900040c MS |
3259 | case bp_overlay_event: |
3260 | /* By analogy with the thread event, GDB should not stop for these. */ | |
a3f17187 | 3261 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 3262 | result = PRINT_NOTHING; |
1900040c MS |
3263 | break; |
3264 | ||
0fd8e87f UW |
3265 | case bp_longjmp_master: |
3266 | /* These should never be enabled. */ | |
3267 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
3268 | result = PRINT_NOTHING; | |
3269 | break; | |
3270 | ||
aa7d318d TT |
3271 | case bp_std_terminate_master: |
3272 | /* These should never be enabled. */ | |
3273 | printf_filtered (_("std::terminate Master Breakpoint: gdb should not stop!\n")); | |
3274 | result = PRINT_NOTHING; | |
3275 | break; | |
3276 | ||
e514a9d6 JM |
3277 | case bp_watchpoint: |
3278 | case bp_hardware_watchpoint: | |
fa4727a6 DJ |
3279 | annotate_watchpoint (b->number); |
3280 | if (ui_out_is_mi_like_p (uiout)) | |
3281 | ui_out_field_string | |
3282 | (uiout, "reason", | |
3283 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
3284 | mention (b); | |
f7545552 | 3285 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
fa4727a6 DJ |
3286 | ui_out_text (uiout, "\nOld value = "); |
3287 | watchpoint_value_print (bs->old_val, stb->stream); | |
3288 | ui_out_field_stream (uiout, "old", stb); | |
3289 | ui_out_text (uiout, "\nNew value = "); | |
3290 | watchpoint_value_print (b->val, stb->stream); | |
3291 | ui_out_field_stream (uiout, "new", stb); | |
fa4727a6 | 3292 | ui_out_text (uiout, "\n"); |
e514a9d6 | 3293 | /* More than one watchpoint may have been triggered. */ |
f7545552 | 3294 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
3295 | break; |
3296 | ||
3297 | case bp_read_watchpoint: | |
9dc5e2a9 | 3298 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3299 | ui_out_field_string |
3300 | (uiout, "reason", | |
3301 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 3302 | mention (b); |
f7545552 | 3303 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 3304 | ui_out_text (uiout, "\nValue = "); |
fa4727a6 | 3305 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 3306 | ui_out_field_stream (uiout, "value", stb); |
8b93c638 | 3307 | ui_out_text (uiout, "\n"); |
f7545552 | 3308 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
3309 | break; |
3310 | ||
3311 | case bp_access_watchpoint: | |
fa4727a6 | 3312 | if (bs->old_val != NULL) |
8b93c638 | 3313 | { |
4f8d1dc6 | 3314 | annotate_watchpoint (b->number); |
9dc5e2a9 | 3315 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3316 | ui_out_field_string |
3317 | (uiout, "reason", | |
3318 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 3319 | mention (b); |
f7545552 | 3320 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 3321 | ui_out_text (uiout, "\nOld value = "); |
fa4727a6 | 3322 | watchpoint_value_print (bs->old_val, stb->stream); |
8b93c638 | 3323 | ui_out_field_stream (uiout, "old", stb); |
8b93c638 JM |
3324 | ui_out_text (uiout, "\nNew value = "); |
3325 | } | |
3326 | else | |
3327 | { | |
4f8d1dc6 | 3328 | mention (b); |
9dc5e2a9 | 3329 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3330 | ui_out_field_string |
3331 | (uiout, "reason", | |
3332 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
f7545552 | 3333 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
3334 | ui_out_text (uiout, "\nValue = "); |
3335 | } | |
fa4727a6 | 3336 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 3337 | ui_out_field_stream (uiout, "new", stb); |
8b93c638 | 3338 | ui_out_text (uiout, "\n"); |
f7545552 | 3339 | result = PRINT_UNKNOWN; |
e514a9d6 | 3340 | break; |
4ce44c66 | 3341 | |
e514a9d6 JM |
3342 | /* Fall through, we don't deal with these types of breakpoints |
3343 | here. */ | |
3344 | ||
11cf8741 | 3345 | case bp_finish: |
9dc5e2a9 | 3346 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3347 | ui_out_field_string |
3348 | (uiout, "reason", | |
3349 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
f7545552 | 3350 | result = PRINT_UNKNOWN; |
8b93c638 JM |
3351 | break; |
3352 | ||
e514a9d6 | 3353 | case bp_until: |
9dc5e2a9 | 3354 | if (ui_out_is_mi_like_p (uiout)) |
1fbc2a49 NR |
3355 | ui_out_field_string |
3356 | (uiout, "reason", | |
3357 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
f7545552 | 3358 | result = PRINT_UNKNOWN; |
8b93c638 JM |
3359 | break; |
3360 | ||
c2d11a7d | 3361 | case bp_none: |
e514a9d6 JM |
3362 | case bp_longjmp: |
3363 | case bp_longjmp_resume: | |
3364 | case bp_step_resume: | |
e514a9d6 JM |
3365 | case bp_watchpoint_scope: |
3366 | case bp_call_dummy: | |
aa7d318d | 3367 | case bp_std_terminate: |
1042e4c0 | 3368 | case bp_tracepoint: |
7a697b8d | 3369 | case bp_fast_tracepoint: |
4efc6507 | 3370 | case bp_jit_event: |
e514a9d6 | 3371 | default: |
f7545552 TT |
3372 | result = PRINT_UNKNOWN; |
3373 | break; | |
e514a9d6 | 3374 | } |
f7545552 TT |
3375 | |
3376 | do_cleanups (old_chain); | |
3377 | return result; | |
e514a9d6 JM |
3378 | } |
3379 | ||
3380 | /* Generic routine for printing messages indicating why we | |
3381 | stopped. The behavior of this function depends on the value | |
3382 | 'print_it' in the bpstat structure. Under some circumstances we | |
3383 | may decide not to print anything here and delegate the task to | |
3384 | normal_stop(). */ | |
3385 | ||
3386 | static enum print_stop_action | |
3387 | print_bp_stop_message (bpstat bs) | |
3388 | { | |
3389 | switch (bs->print_it) | |
3390 | { | |
3391 | case print_it_noop: | |
3392 | /* Nothing should be printed for this bpstat entry. */ | |
3393 | return PRINT_UNKNOWN; | |
3394 | break; | |
3395 | ||
3396 | case print_it_done: | |
3397 | /* We still want to print the frame, but we already printed the | |
3398 | relevant messages. */ | |
3399 | return PRINT_SRC_AND_LOC; | |
3400 | break; | |
3401 | ||
3402 | case print_it_normal: | |
4f8d1dc6 | 3403 | { |
89f9893c | 3404 | const struct bp_location *bl = bs->breakpoint_at; |
4f8d1dc6 VP |
3405 | struct breakpoint *b = bl ? bl->owner : NULL; |
3406 | ||
3407 | /* Normal case. Call the breakpoint's print_it method, or | |
3408 | print_it_typical. */ | |
3409 | /* FIXME: how breakpoint can ever be NULL here? */ | |
3410 | if (b != NULL && b->ops != NULL && b->ops->print_it != NULL) | |
3411 | return b->ops->print_it (b); | |
3412 | else | |
3413 | return print_it_typical (bs); | |
3414 | } | |
3415 | break; | |
3086aeae | 3416 | |
e514a9d6 | 3417 | default: |
8e65ff28 | 3418 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3419 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 3420 | break; |
c906108c | 3421 | } |
c906108c SS |
3422 | } |
3423 | ||
e514a9d6 JM |
3424 | /* Print a message indicating what happened. This is called from |
3425 | normal_stop(). The input to this routine is the head of the bpstat | |
3426 | list - a list of the eventpoints that caused this stop. This | |
3427 | routine calls the generic print routine for printing a message | |
3428 | about reasons for stopping. This will print (for example) the | |
3429 | "Breakpoint n," part of the output. The return value of this | |
3430 | routine is one of: | |
c906108c | 3431 | |
917317f4 JM |
3432 | PRINT_UNKNOWN: Means we printed nothing |
3433 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
3434 | code to print the location. An example is |
3435 | "Breakpoint 1, " which should be followed by | |
3436 | the location. | |
917317f4 | 3437 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
3438 | to also print the location part of the message. |
3439 | An example is the catch/throw messages, which | |
917317f4 JM |
3440 | don't require a location appended to the end. |
3441 | PRINT_NOTHING: We have done some printing and we don't need any | |
3442 | further info to be printed.*/ | |
c906108c | 3443 | |
917317f4 | 3444 | enum print_stop_action |
fba45db2 | 3445 | bpstat_print (bpstat bs) |
c906108c SS |
3446 | { |
3447 | int val; | |
c5aa993b | 3448 | |
c906108c | 3449 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
3450 | (Currently all watchpoints go on the bpstat whether hit or not. |
3451 | That probably could (should) be changed, provided care is taken | |
c906108c | 3452 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
3453 | for (; bs; bs = bs->next) |
3454 | { | |
3455 | val = print_bp_stop_message (bs); | |
3456 | if (val == PRINT_SRC_ONLY | |
3457 | || val == PRINT_SRC_AND_LOC | |
3458 | || val == PRINT_NOTHING) | |
3459 | return val; | |
3460 | } | |
c906108c | 3461 | |
e514a9d6 JM |
3462 | /* We reached the end of the chain, or we got a null BS to start |
3463 | with and nothing was printed. */ | |
917317f4 | 3464 | return PRINT_UNKNOWN; |
c906108c SS |
3465 | } |
3466 | ||
3467 | /* Evaluate the expression EXP and return 1 if value is zero. | |
3468 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
3469 | The argument is a "struct expression *" that has been cast to char * to | |
3470 | make it pass through catch_errors. */ | |
3471 | ||
3472 | static int | |
4efb68b1 | 3473 | breakpoint_cond_eval (void *exp) |
c906108c | 3474 | { |
278cd55f | 3475 | struct value *mark = value_mark (); |
c5aa993b | 3476 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
3477 | value_free_to_mark (mark); |
3478 | return i; | |
3479 | } | |
3480 | ||
3481 | /* Allocate a new bpstat and chain it to the current one. */ | |
3482 | ||
3483 | static bpstat | |
89f9893c | 3484 | bpstat_alloc (const struct bp_location *bl, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
3485 | { |
3486 | bpstat bs; | |
3487 | ||
3488 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
3489 | cbs->next = bs; | |
4f8d1dc6 | 3490 | bs->breakpoint_at = bl; |
c906108c SS |
3491 | /* If the condition is false, etc., don't do the commands. */ |
3492 | bs->commands = NULL; | |
9add0f1b | 3493 | bs->commands_left = NULL; |
c906108c SS |
3494 | bs->old_val = NULL; |
3495 | bs->print_it = print_it_normal; | |
3496 | return bs; | |
3497 | } | |
3498 | \f | |
d983da9c DJ |
3499 | /* The target has stopped with waitstatus WS. Check if any hardware |
3500 | watchpoints have triggered, according to the target. */ | |
3501 | ||
3502 | int | |
3503 | watchpoints_triggered (struct target_waitstatus *ws) | |
3504 | { | |
d92524f1 | 3505 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
3506 | CORE_ADDR addr; |
3507 | struct breakpoint *b; | |
3508 | ||
3509 | if (!stopped_by_watchpoint) | |
3510 | { | |
3511 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
3512 | as not triggered. */ | |
3513 | ALL_BREAKPOINTS (b) | |
3514 | if (b->type == bp_hardware_watchpoint | |
3515 | || b->type == bp_read_watchpoint | |
3516 | || b->type == bp_access_watchpoint) | |
3517 | b->watchpoint_triggered = watch_triggered_no; | |
3518 | ||
3519 | return 0; | |
3520 | } | |
3521 | ||
3522 | if (!target_stopped_data_address (¤t_target, &addr)) | |
3523 | { | |
3524 | /* We were stopped by a watchpoint, but we don't know where. | |
3525 | Mark all watchpoints as unknown. */ | |
3526 | ALL_BREAKPOINTS (b) | |
3527 | if (b->type == bp_hardware_watchpoint | |
3528 | || b->type == bp_read_watchpoint | |
3529 | || b->type == bp_access_watchpoint) | |
3530 | b->watchpoint_triggered = watch_triggered_unknown; | |
3531 | ||
3532 | return stopped_by_watchpoint; | |
3533 | } | |
3534 | ||
3535 | /* The target could report the data address. Mark watchpoints | |
3536 | affected by this data address as triggered, and all others as not | |
3537 | triggered. */ | |
3538 | ||
3539 | ALL_BREAKPOINTS (b) | |
3540 | if (b->type == bp_hardware_watchpoint | |
3541 | || b->type == bp_read_watchpoint | |
3542 | || b->type == bp_access_watchpoint) | |
3543 | { | |
a5606eee | 3544 | struct bp_location *loc; |
d983da9c DJ |
3545 | struct value *v; |
3546 | ||
3547 | b->watchpoint_triggered = watch_triggered_no; | |
a5606eee VP |
3548 | for (loc = b->loc; loc; loc = loc->next) |
3549 | /* Exact match not required. Within range is | |
3550 | sufficient. */ | |
5009afc5 AS |
3551 | if (target_watchpoint_addr_within_range (¤t_target, |
3552 | addr, loc->address, | |
3553 | loc->length)) | |
a5606eee VP |
3554 | { |
3555 | b->watchpoint_triggered = watch_triggered_yes; | |
3556 | break; | |
3557 | } | |
d983da9c DJ |
3558 | } |
3559 | ||
3560 | return 1; | |
3561 | } | |
3562 | ||
c906108c SS |
3563 | /* Possible return values for watchpoint_check (this can't be an enum |
3564 | because of check_errors). */ | |
3565 | /* The watchpoint has been deleted. */ | |
3566 | #define WP_DELETED 1 | |
3567 | /* The value has changed. */ | |
3568 | #define WP_VALUE_CHANGED 2 | |
3569 | /* The value has not changed. */ | |
3570 | #define WP_VALUE_NOT_CHANGED 3 | |
60e1c644 PA |
3571 | /* Ignore this watchpoint, no matter if the value changed or not. */ |
3572 | #define WP_IGNORE 4 | |
c906108c SS |
3573 | |
3574 | #define BP_TEMPFLAG 1 | |
3575 | #define BP_HARDWAREFLAG 2 | |
3576 | ||
553e4c11 JB |
3577 | /* Evaluate watchpoint condition expression and check if its value changed. |
3578 | ||
3579 | P should be a pointer to struct bpstat, but is defined as a void * | |
3580 | in order for this function to be usable with catch_errors. */ | |
c906108c SS |
3581 | |
3582 | static int | |
4efb68b1 | 3583 | watchpoint_check (void *p) |
c906108c SS |
3584 | { |
3585 | bpstat bs = (bpstat) p; | |
3586 | struct breakpoint *b; | |
3587 | struct frame_info *fr; | |
3588 | int within_current_scope; | |
3589 | ||
4f8d1dc6 | 3590 | b = bs->breakpoint_at->owner; |
c906108c | 3591 | |
f6bc2008 PA |
3592 | /* If this is a local watchpoint, we only want to check if the |
3593 | watchpoint frame is in scope if the current thread is the thread | |
3594 | that was used to create the watchpoint. */ | |
3595 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 3596 | return WP_IGNORE; |
f6bc2008 | 3597 | |
c906108c SS |
3598 | if (b->exp_valid_block == NULL) |
3599 | within_current_scope = 1; | |
3600 | else | |
3601 | { | |
edb3359d DJ |
3602 | struct frame_info *frame = get_current_frame (); |
3603 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
3604 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
3605 | ||
a0f49112 JK |
3606 | /* in_function_epilogue_p() returns a non-zero value if we're still |
3607 | in the function but the stack frame has already been invalidated. | |
3608 | Since we can't rely on the values of local variables after the | |
3609 | stack has been destroyed, we are treating the watchpoint in that | |
3610 | state as `not changed' without further checking. Don't mark | |
3611 | watchpoints as changed if the current frame is in an epilogue - | |
3612 | even if they are in some other frame, our view of the stack | |
3613 | is likely to be wrong and frame_find_by_id could error out. */ | |
3614 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) | |
60e1c644 | 3615 | return WP_IGNORE; |
a0f49112 | 3616 | |
101dcfbe | 3617 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 3618 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
3619 | |
3620 | /* If we've gotten confused in the unwinder, we might have | |
3621 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
3622 | if (within_current_scope) |
3623 | { | |
3624 | struct symbol *function; | |
3625 | ||
3626 | function = get_frame_function (fr); | |
3627 | if (function == NULL | |
3628 | || !contained_in (b->exp_valid_block, | |
3629 | SYMBOL_BLOCK_VALUE (function))) | |
3630 | within_current_scope = 0; | |
3631 | } | |
69fbadd5 | 3632 | |
edb3359d | 3633 | if (within_current_scope) |
c906108c SS |
3634 | /* If we end up stopping, the current frame will get selected |
3635 | in normal_stop. So this call to select_frame won't affect | |
3636 | the user. */ | |
0f7d239c | 3637 | select_frame (fr); |
c906108c | 3638 | } |
c5aa993b | 3639 | |
c906108c SS |
3640 | if (within_current_scope) |
3641 | { | |
3642 | /* We use value_{,free_to_}mark because it could be a | |
3643 | *long* time before we return to the command level and | |
c5aa993b JM |
3644 | call free_all_values. We can't call free_all_values because |
3645 | we might be in the middle of evaluating a function call. */ | |
c906108c | 3646 | |
278cd55f | 3647 | struct value *mark = value_mark (); |
fa4727a6 DJ |
3648 | struct value *new_val; |
3649 | ||
3650 | fetch_watchpoint_value (b->exp, &new_val, NULL, NULL); | |
218d2fc6 TJB |
3651 | |
3652 | /* We use value_equal_contents instead of value_equal because the latter | |
3653 | coerces an array to a pointer, thus comparing just the address of the | |
3654 | array instead of its contents. This is not what we want. */ | |
fa4727a6 | 3655 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 3656 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 3657 | { |
fa4727a6 DJ |
3658 | if (new_val != NULL) |
3659 | { | |
3660 | release_value (new_val); | |
3661 | value_free_to_mark (mark); | |
3662 | } | |
c906108c SS |
3663 | bs->old_val = b->val; |
3664 | b->val = new_val; | |
fa4727a6 | 3665 | b->val_valid = 1; |
c906108c SS |
3666 | return WP_VALUE_CHANGED; |
3667 | } | |
3668 | else | |
3669 | { | |
60e1c644 | 3670 | /* Nothing changed. */ |
c906108c | 3671 | value_free_to_mark (mark); |
c906108c SS |
3672 | return WP_VALUE_NOT_CHANGED; |
3673 | } | |
3674 | } | |
3675 | else | |
3676 | { | |
3677 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
3678 | if we temporarily ignored the watchpoint, then when |
3679 | we reenter the block in which it is valid it contains | |
3680 | garbage (in the case of a function, it may have two | |
3681 | garbage values, one before and one after the prologue). | |
3682 | So we can't even detect the first assignment to it and | |
3683 | watch after that (since the garbage may or may not equal | |
3684 | the first value assigned). */ | |
4ce44c66 JM |
3685 | /* We print all the stop information in print_it_typical(), but |
3686 | in this case, by the time we call print_it_typical() this bp | |
3687 | will be deleted already. So we have no choice but print the | |
3688 | information here. */ | |
9dc5e2a9 | 3689 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3690 | ui_out_field_string |
3691 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 3692 | ui_out_text (uiout, "\nWatchpoint "); |
4f8d1dc6 | 3693 | ui_out_field_int (uiout, "wpnum", b->number); |
8b93c638 JM |
3694 | ui_out_text (uiout, " deleted because the program has left the block in\n\ |
3695 | which its expression is valid.\n"); | |
4ce44c66 | 3696 | |
c906108c | 3697 | if (b->related_breakpoint) |
60e1c644 PA |
3698 | { |
3699 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
3700 | b->related_breakpoint->related_breakpoint = NULL; | |
3701 | b->related_breakpoint = NULL; | |
3702 | } | |
b5de0fa7 | 3703 | b->disposition = disp_del_at_next_stop; |
c906108c SS |
3704 | |
3705 | return WP_DELETED; | |
3706 | } | |
3707 | } | |
3708 | ||
18a18393 VP |
3709 | /* Return true if it looks like target has stopped due to hitting |
3710 | breakpoint location BL. This function does not check if we | |
3711 | should stop, only if BL explains the stop. */ | |
3712 | static int | |
6c95b8df PA |
3713 | bpstat_check_location (const struct bp_location *bl, |
3714 | struct address_space *aspace, CORE_ADDR bp_addr) | |
18a18393 VP |
3715 | { |
3716 | struct breakpoint *b = bl->owner; | |
3717 | ||
e8595ef6 SS |
3718 | /* By definition, the inferior does not report stops at |
3719 | tracepoints. */ | |
7a697b8d | 3720 | if (tracepoint_type (b)) |
e8595ef6 SS |
3721 | return 0; |
3722 | ||
18a18393 VP |
3723 | if (b->type != bp_watchpoint |
3724 | && b->type != bp_hardware_watchpoint | |
3725 | && b->type != bp_read_watchpoint | |
3726 | && b->type != bp_access_watchpoint | |
3727 | && b->type != bp_hardware_breakpoint | |
fe798b75 | 3728 | && b->type != bp_catchpoint) /* a non-watchpoint bp */ |
18a18393 | 3729 | { |
6c95b8df PA |
3730 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
3731 | aspace, bp_addr)) | |
18a18393 VP |
3732 | return 0; |
3733 | if (overlay_debugging /* unmapped overlay section */ | |
3734 | && section_is_overlay (bl->section) | |
3735 | && !section_is_mapped (bl->section)) | |
3736 | return 0; | |
3737 | } | |
3738 | ||
3739 | /* Continuable hardware watchpoints are treated as non-existent if the | |
3740 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
3741 | some data address). Otherwise gdb won't stop on a break instruction | |
3742 | in the code (not from a breakpoint) when a hardware watchpoint has | |
3743 | been defined. Also skip watchpoints which we know did not trigger | |
3744 | (did not match the data address). */ | |
3745 | ||
3746 | if ((b->type == bp_hardware_watchpoint | |
3747 | || b->type == bp_read_watchpoint | |
3748 | || b->type == bp_access_watchpoint) | |
3749 | && b->watchpoint_triggered == watch_triggered_no) | |
3750 | return 0; | |
3751 | ||
3752 | if (b->type == bp_hardware_breakpoint) | |
3753 | { | |
3754 | if (bl->address != bp_addr) | |
3755 | return 0; | |
3756 | if (overlay_debugging /* unmapped overlay section */ | |
3757 | && section_is_overlay (bl->section) | |
3758 | && !section_is_mapped (bl->section)) | |
3759 | return 0; | |
3760 | } | |
ce78b96d | 3761 | |
ce78b96d JB |
3762 | if (b->type == bp_catchpoint) |
3763 | { | |
3764 | gdb_assert (b->ops != NULL && b->ops->breakpoint_hit != NULL); | |
3765 | if (!b->ops->breakpoint_hit (b)) | |
3766 | return 0; | |
3767 | } | |
3768 | ||
18a18393 VP |
3769 | return 1; |
3770 | } | |
3771 | ||
3772 | /* If BS refers to a watchpoint, determine if the watched values | |
3773 | has actually changed, and we should stop. If not, set BS->stop | |
3774 | to 0. */ | |
3775 | static void | |
3776 | bpstat_check_watchpoint (bpstat bs) | |
3777 | { | |
3778 | const struct bp_location *bl = bs->breakpoint_at; | |
3779 | struct breakpoint *b = bl->owner; | |
3780 | ||
3781 | if (b->type == bp_watchpoint | |
3782 | || b->type == bp_read_watchpoint | |
3783 | || b->type == bp_access_watchpoint | |
3784 | || b->type == bp_hardware_watchpoint) | |
3785 | { | |
3786 | CORE_ADDR addr; | |
3787 | struct value *v; | |
3788 | int must_check_value = 0; | |
3789 | ||
3790 | if (b->type == bp_watchpoint) | |
3791 | /* For a software watchpoint, we must always check the | |
3792 | watched value. */ | |
3793 | must_check_value = 1; | |
3794 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
3795 | /* We have a hardware watchpoint (read, write, or access) | |
3796 | and the target earlier reported an address watched by | |
3797 | this watchpoint. */ | |
3798 | must_check_value = 1; | |
3799 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
3800 | && b->type == bp_hardware_watchpoint) | |
3801 | /* We were stopped by a hardware watchpoint, but the target could | |
3802 | not report the data address. We must check the watchpoint's | |
3803 | value. Access and read watchpoints are out of luck; without | |
3804 | a data address, we can't figure it out. */ | |
3805 | must_check_value = 1; | |
3806 | ||
3807 | if (must_check_value) | |
3808 | { | |
3809 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
3810 | b->number); | |
3811 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
3812 | int e = catch_errors (watchpoint_check, bs, message, | |
3813 | RETURN_MASK_ALL); | |
3814 | do_cleanups (cleanups); | |
3815 | switch (e) | |
3816 | { | |
3817 | case WP_DELETED: | |
3818 | /* We've already printed what needs to be printed. */ | |
3819 | bs->print_it = print_it_done; | |
3820 | /* Stop. */ | |
3821 | break; | |
60e1c644 PA |
3822 | case WP_IGNORE: |
3823 | bs->print_it = print_it_noop; | |
3824 | bs->stop = 0; | |
3825 | break; | |
18a18393 VP |
3826 | case WP_VALUE_CHANGED: |
3827 | if (b->type == bp_read_watchpoint) | |
3828 | { | |
85d721b8 PA |
3829 | /* There are two cases to consider here: |
3830 | ||
3831 | 1. we're watching the triggered memory for reads. | |
3832 | In that case, trust the target, and always report | |
3833 | the watchpoint hit to the user. Even though | |
3834 | reads don't cause value changes, the value may | |
3835 | have changed since the last time it was read, and | |
3836 | since we're not trapping writes, we will not see | |
3837 | those, and as such we should ignore our notion of | |
3838 | old value. | |
3839 | ||
3840 | 2. we're watching the triggered memory for both | |
3841 | reads and writes. There are two ways this may | |
3842 | happen: | |
3843 | ||
3844 | 2.1. this is a target that can't break on data | |
3845 | reads only, but can break on accesses (reads or | |
3846 | writes), such as e.g., x86. We detect this case | |
3847 | at the time we try to insert read watchpoints. | |
3848 | ||
3849 | 2.2. otherwise, the target supports read | |
3850 | watchpoints, but, the user set an access or write | |
3851 | watchpoint watching the same memory as this read | |
3852 | watchpoint. | |
3853 | ||
3854 | If we're watching memory writes as well as reads, | |
3855 | ignore watchpoint hits when we find that the | |
3856 | value hasn't changed, as reads don't cause | |
3857 | changes. This still gives false positives when | |
3858 | the program writes the same value to memory as | |
3859 | what there was already in memory (we will confuse | |
3860 | it for a read), but it's much better than | |
3861 | nothing. */ | |
3862 | ||
3863 | int other_write_watchpoint = 0; | |
3864 | ||
3865 | if (bl->watchpoint_type == hw_read) | |
3866 | { | |
3867 | struct breakpoint *other_b; | |
3868 | ||
3869 | ALL_BREAKPOINTS (other_b) | |
3870 | if ((other_b->type == bp_hardware_watchpoint | |
3871 | || other_b->type == bp_access_watchpoint) | |
3872 | && (other_b->watchpoint_triggered | |
3873 | == watch_triggered_yes)) | |
3874 | { | |
3875 | other_write_watchpoint = 1; | |
3876 | break; | |
3877 | } | |
3878 | } | |
3879 | ||
3880 | if (other_write_watchpoint | |
3881 | || bl->watchpoint_type == hw_access) | |
3882 | { | |
3883 | /* We're watching the same memory for writes, | |
3884 | and the value changed since the last time we | |
3885 | updated it, so this trap must be for a write. | |
3886 | Ignore it. */ | |
3887 | bs->print_it = print_it_noop; | |
3888 | bs->stop = 0; | |
3889 | } | |
18a18393 VP |
3890 | } |
3891 | break; | |
3892 | case WP_VALUE_NOT_CHANGED: | |
3893 | if (b->type == bp_hardware_watchpoint | |
3894 | || b->type == bp_watchpoint) | |
3895 | { | |
3896 | /* Don't stop: write watchpoints shouldn't fire if | |
3897 | the value hasn't changed. */ | |
3898 | bs->print_it = print_it_noop; | |
3899 | bs->stop = 0; | |
3900 | } | |
3901 | /* Stop. */ | |
3902 | break; | |
3903 | default: | |
3904 | /* Can't happen. */ | |
3905 | case 0: | |
3906 | /* Error from catch_errors. */ | |
3907 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); | |
3908 | if (b->related_breakpoint) | |
3909 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
3910 | b->disposition = disp_del_at_next_stop; | |
3911 | /* We've already printed what needs to be printed. */ | |
3912 | bs->print_it = print_it_done; | |
3913 | break; | |
3914 | } | |
3915 | } | |
3916 | else /* must_check_value == 0 */ | |
3917 | { | |
3918 | /* This is a case where some watchpoint(s) triggered, but | |
3919 | not at the address of this watchpoint, or else no | |
3920 | watchpoint triggered after all. So don't print | |
3921 | anything for this watchpoint. */ | |
3922 | bs->print_it = print_it_noop; | |
3923 | bs->stop = 0; | |
3924 | } | |
3925 | } | |
3926 | } | |
3927 | ||
3928 | ||
3929 | /* Check conditions (condition proper, frame, thread and ignore count) | |
3930 | of breakpoint referred to by BS. If we should not stop for this | |
3931 | breakpoint, set BS->stop to 0. */ | |
3932 | static void | |
3933 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
3934 | { | |
3935 | int thread_id = pid_to_thread_id (ptid); | |
3936 | const struct bp_location *bl = bs->breakpoint_at; | |
3937 | struct breakpoint *b = bl->owner; | |
3938 | ||
3939 | if (frame_id_p (b->frame_id) | |
edb3359d | 3940 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 VP |
3941 | bs->stop = 0; |
3942 | else if (bs->stop) | |
3943 | { | |
3944 | int value_is_zero = 0; | |
60e1c644 PA |
3945 | struct expression *cond; |
3946 | ||
18a18393 VP |
3947 | /* If this is a scope breakpoint, mark the associated |
3948 | watchpoint as triggered so that we will handle the | |
3949 | out-of-scope event. We'll get to the watchpoint next | |
3950 | iteration. */ | |
3951 | if (b->type == bp_watchpoint_scope) | |
3952 | b->related_breakpoint->watchpoint_triggered = watch_triggered_yes; | |
60e1c644 PA |
3953 | |
3954 | if (is_watchpoint (b)) | |
3955 | cond = b->cond_exp; | |
3956 | else | |
3957 | cond = bl->cond; | |
3958 | ||
3959 | if (cond && bl->owner->disposition != disp_del_at_next_stop) | |
18a18393 | 3960 | { |
60e1c644 PA |
3961 | int within_current_scope = 1; |
3962 | ||
c5bc3a77 DJ |
3963 | /* We use value_mark and value_free_to_mark because it could |
3964 | be a long time before we return to the command level and | |
3965 | call free_all_values. We can't call free_all_values | |
3966 | because we might be in the middle of evaluating a | |
3967 | function call. */ | |
3968 | struct value *mark = value_mark (); | |
3969 | ||
edb3359d DJ |
3970 | /* Need to select the frame, with all that implies so that |
3971 | the conditions will have the right context. Because we | |
3972 | use the frame, we will not see an inlined function's | |
3973 | variables when we arrive at a breakpoint at the start | |
3974 | of the inlined function; the current frame will be the | |
3975 | call site. */ | |
60e1c644 PA |
3976 | if (!is_watchpoint (b) || b->cond_exp_valid_block == NULL) |
3977 | select_frame (get_current_frame ()); | |
3978 | else | |
3979 | { | |
3980 | struct frame_info *frame; | |
3981 | ||
3982 | /* For local watchpoint expressions, which particular | |
3983 | instance of a local is being watched matters, so we | |
3984 | keep track of the frame to evaluate the expression | |
3985 | in. To evaluate the condition however, it doesn't | |
3986 | really matter which instantiation of the function | |
3987 | where the condition makes sense triggers the | |
3988 | watchpoint. This allows an expression like "watch | |
3989 | global if q > 10" set in `func', catch writes to | |
3990 | global on all threads that call `func', or catch | |
3991 | writes on all recursive calls of `func' by a single | |
3992 | thread. We simply always evaluate the condition in | |
3993 | the innermost frame that's executing where it makes | |
3994 | sense to evaluate the condition. It seems | |
3995 | intuitive. */ | |
3996 | frame = block_innermost_frame (b->cond_exp_valid_block); | |
3997 | if (frame != NULL) | |
3998 | select_frame (frame); | |
3999 | else | |
4000 | within_current_scope = 0; | |
4001 | } | |
4002 | if (within_current_scope) | |
4003 | value_is_zero | |
4004 | = catch_errors (breakpoint_cond_eval, cond, | |
4005 | "Error in testing breakpoint condition:\n", | |
4006 | RETURN_MASK_ALL); | |
4007 | else | |
4008 | { | |
4009 | warning (_("Watchpoint condition cannot be tested " | |
4010 | "in the current scope")); | |
4011 | /* If we failed to set the right context for this | |
4012 | watchpoint, unconditionally report it. */ | |
4013 | value_is_zero = 0; | |
4014 | } | |
18a18393 | 4015 | /* FIXME-someday, should give breakpoint # */ |
c5bc3a77 | 4016 | value_free_to_mark (mark); |
18a18393 | 4017 | } |
60e1c644 PA |
4018 | |
4019 | if (cond && value_is_zero) | |
18a18393 VP |
4020 | { |
4021 | bs->stop = 0; | |
4022 | } | |
4023 | else if (b->thread != -1 && b->thread != thread_id) | |
4024 | { | |
4025 | bs->stop = 0; | |
4026 | } | |
4027 | else if (b->ignore_count > 0) | |
4028 | { | |
4029 | b->ignore_count--; | |
4030 | annotate_ignore_count_change (); | |
4031 | bs->stop = 0; | |
4032 | /* Increase the hit count even though we don't | |
4033 | stop. */ | |
4034 | ++(b->hit_count); | |
4035 | } | |
4036 | } | |
4037 | } | |
4038 | ||
4039 | ||
9709f61c | 4040 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 4041 | BP_ADDR in thread PTID. |
c906108c | 4042 | |
d983da9c | 4043 | Determine whether we stopped at a breakpoint, etc, or whether we |
c906108c SS |
4044 | don't understand this stop. Result is a chain of bpstat's such that: |
4045 | ||
c5aa993b | 4046 | if we don't understand the stop, the result is a null pointer. |
c906108c | 4047 | |
c5aa993b | 4048 | if we understand why we stopped, the result is not null. |
c906108c | 4049 | |
c5aa993b JM |
4050 | Each element of the chain refers to a particular breakpoint or |
4051 | watchpoint at which we have stopped. (We may have stopped for | |
4052 | several reasons concurrently.) | |
c906108c | 4053 | |
c5aa993b JM |
4054 | Each element of the chain has valid next, breakpoint_at, |
4055 | commands, FIXME??? fields. */ | |
c906108c SS |
4056 | |
4057 | bpstat | |
6c95b8df PA |
4058 | bpstat_stop_status (struct address_space *aspace, |
4059 | CORE_ADDR bp_addr, ptid_t ptid) | |
c906108c | 4060 | { |
0d381245 | 4061 | struct breakpoint *b = NULL; |
876fa593 | 4062 | struct bp_location *bl, **blp_tmp; |
20874c92 | 4063 | struct bp_location *loc; |
c906108c SS |
4064 | /* Root of the chain of bpstat's */ |
4065 | struct bpstats root_bs[1]; | |
4066 | /* Pointer to the last thing in the chain currently. */ | |
4067 | bpstat bs = root_bs; | |
20874c92 | 4068 | int ix; |
429374b8 | 4069 | int need_remove_insert; |
c906108c | 4070 | |
429374b8 JK |
4071 | /* ALL_BP_LOCATIONS iteration would break across |
4072 | update_global_location_list possibly executed by | |
4073 | bpstat_check_breakpoint_conditions's inferior call. */ | |
c5aa993b | 4074 | |
429374b8 JK |
4075 | ALL_BREAKPOINTS (b) |
4076 | { | |
4077 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) | |
4078 | continue; | |
a5606eee | 4079 | |
429374b8 JK |
4080 | for (bl = b->loc; bl != NULL; bl = bl->next) |
4081 | { | |
4082 | /* For hardware watchpoints, we look only at the first location. | |
4083 | The watchpoint_check function will work on entire expression, | |
4084 | not the individual locations. For read watchopints, the | |
4085 | watchpoints_triggered function have checked all locations | |
4086 | already. */ | |
4087 | if (b->type == bp_hardware_watchpoint && bl != b->loc) | |
4088 | break; | |
18a18393 | 4089 | |
429374b8 JK |
4090 | if (bl->shlib_disabled) |
4091 | continue; | |
c5aa993b | 4092 | |
429374b8 JK |
4093 | if (!bpstat_check_location (bl, aspace, bp_addr)) |
4094 | continue; | |
c5aa993b | 4095 | |
429374b8 | 4096 | /* Come here if it's a watchpoint, or if the break address matches */ |
c5aa993b | 4097 | |
429374b8 | 4098 | bs = bpstat_alloc (bl, bs); /* Alloc a bpstat to explain stop */ |
c5aa993b | 4099 | |
429374b8 JK |
4100 | /* Assume we stop. Should we find watchpoint that is not actually |
4101 | triggered, or if condition of breakpoint is false, we'll reset | |
4102 | 'stop' to 0. */ | |
4103 | bs->stop = 1; | |
4104 | bs->print = 1; | |
d983da9c | 4105 | |
429374b8 JK |
4106 | bpstat_check_watchpoint (bs); |
4107 | if (!bs->stop) | |
4108 | continue; | |
18a18393 | 4109 | |
429374b8 | 4110 | if (b->type == bp_thread_event || b->type == bp_overlay_event |
aa7d318d TT |
4111 | || b->type == bp_longjmp_master |
4112 | || b->type == bp_std_terminate_master) | |
429374b8 JK |
4113 | /* We do not stop for these. */ |
4114 | bs->stop = 0; | |
4115 | else | |
4116 | bpstat_check_breakpoint_conditions (bs, ptid); | |
4117 | ||
4118 | if (bs->stop) | |
4119 | { | |
4120 | ++(b->hit_count); | |
c906108c | 4121 | |
429374b8 JK |
4122 | /* We will stop here */ |
4123 | if (b->disposition == disp_disable) | |
4124 | { | |
4125 | if (b->enable_state != bp_permanent) | |
4126 | b->enable_state = bp_disabled; | |
4127 | update_global_location_list (0); | |
4128 | } | |
4129 | if (b->silent) | |
4130 | bs->print = 0; | |
4131 | bs->commands = b->commands; | |
9add0f1b TT |
4132 | incref_counted_command_line (bs->commands); |
4133 | bs->commands_left = bs->commands ? bs->commands->commands : NULL; | |
4134 | if (bs->commands_left | |
4135 | && (strcmp ("silent", bs->commands_left->line) == 0 | |
4136 | || (xdb_commands | |
4137 | && strcmp ("Q", | |
4138 | bs->commands_left->line) == 0))) | |
429374b8 | 4139 | { |
9add0f1b | 4140 | bs->commands_left = bs->commands_left->next; |
429374b8 JK |
4141 | bs->print = 0; |
4142 | } | |
429374b8 JK |
4143 | } |
4144 | ||
4145 | /* Print nothing for this entry if we dont stop or dont print. */ | |
4146 | if (bs->stop == 0 || bs->print == 0) | |
4147 | bs->print_it = print_it_noop; | |
4148 | } | |
4149 | } | |
876fa593 | 4150 | |
20874c92 VP |
4151 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) |
4152 | { | |
6c95b8df PA |
4153 | if (breakpoint_address_match (loc->pspace->aspace, loc->address, |
4154 | aspace, bp_addr)) | |
20874c92 VP |
4155 | { |
4156 | bs = bpstat_alloc (loc, bs); | |
4157 | /* For hits of moribund locations, we should just proceed. */ | |
4158 | bs->stop = 0; | |
4159 | bs->print = 0; | |
4160 | bs->print_it = print_it_noop; | |
4161 | } | |
4162 | } | |
4163 | ||
c906108c | 4164 | bs->next = NULL; /* Terminate the chain */ |
c906108c | 4165 | |
d983da9c DJ |
4166 | /* If we aren't stopping, the value of some hardware watchpoint may |
4167 | not have changed, but the intermediate memory locations we are | |
4168 | watching may have. Don't bother if we're stopping; this will get | |
4169 | done later. */ | |
4170 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
4171 | if (bs->stop) | |
4172 | break; | |
4173 | ||
d832cb68 | 4174 | need_remove_insert = 0; |
d983da9c DJ |
4175 | if (bs == NULL) |
4176 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
4177 | if (!bs->stop | |
20874c92 | 4178 | && bs->breakpoint_at->owner |
2d134ed3 | 4179 | && is_hardware_watchpoint (bs->breakpoint_at->owner)) |
d983da9c | 4180 | { |
2d134ed3 PA |
4181 | update_watchpoint (bs->breakpoint_at->owner, 0 /* don't reparse. */); |
4182 | /* Updating watchpoints invalidates bs->breakpoint_at. | |
4183 | Prevent further code from trying to use it. */ | |
a5606eee | 4184 | bs->breakpoint_at = NULL; |
d832cb68 | 4185 | need_remove_insert = 1; |
d983da9c DJ |
4186 | } |
4187 | ||
d832cb68 | 4188 | if (need_remove_insert) |
2d134ed3 | 4189 | update_global_location_list (1); |
d832cb68 | 4190 | |
d983da9c | 4191 | return root_bs->next; |
c906108c SS |
4192 | } |
4193 | \f | |
4194 | /* Tell what to do about this bpstat. */ | |
4195 | struct bpstat_what | |
fba45db2 | 4196 | bpstat_what (bpstat bs) |
c906108c SS |
4197 | { |
4198 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
4199 | enum class |
4200 | { | |
4201 | /* This bpstat element has no effect on the main_action. */ | |
4202 | no_effect = 0, | |
4203 | ||
4204 | /* There was a watchpoint, stop but don't print. */ | |
4205 | wp_silent, | |
c906108c | 4206 | |
c5aa993b JM |
4207 | /* There was a watchpoint, stop and print. */ |
4208 | wp_noisy, | |
c906108c | 4209 | |
c5aa993b JM |
4210 | /* There was a breakpoint but we're not stopping. */ |
4211 | bp_nostop, | |
c906108c | 4212 | |
c5aa993b JM |
4213 | /* There was a breakpoint, stop but don't print. */ |
4214 | bp_silent, | |
c906108c | 4215 | |
c5aa993b JM |
4216 | /* There was a breakpoint, stop and print. */ |
4217 | bp_noisy, | |
c906108c | 4218 | |
c5aa993b JM |
4219 | /* We hit the longjmp breakpoint. */ |
4220 | long_jump, | |
c906108c | 4221 | |
c5aa993b JM |
4222 | /* We hit the longjmp_resume breakpoint. */ |
4223 | long_resume, | |
c906108c | 4224 | |
c5aa993b JM |
4225 | /* We hit the step_resume breakpoint. */ |
4226 | step_resume, | |
c906108c | 4227 | |
c5aa993b JM |
4228 | /* We hit the shared library event breakpoint. */ |
4229 | shlib_event, | |
c906108c | 4230 | |
4efc6507 DE |
4231 | /* We hit the jit event breakpoint. */ |
4232 | jit_event, | |
4233 | ||
c5aa993b JM |
4234 | /* This is just used to count how many enums there are. */ |
4235 | class_last | |
c906108c SS |
4236 | }; |
4237 | ||
4238 | /* Here is the table which drives this routine. So that we can | |
4239 | format it pretty, we define some abbreviations for the | |
4240 | enum bpstat_what codes. */ | |
4241 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
4242 | #define ss BPSTAT_WHAT_STOP_SILENT | |
4243 | #define sn BPSTAT_WHAT_STOP_NOISY | |
4244 | #define sgl BPSTAT_WHAT_SINGLE | |
4245 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
4246 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
c906108c | 4247 | #define sr BPSTAT_WHAT_STEP_RESUME |
c906108c | 4248 | #define shl BPSTAT_WHAT_CHECK_SHLIBS |
4efc6507 | 4249 | #define jit BPSTAT_WHAT_CHECK_JIT |
c906108c SS |
4250 | |
4251 | /* "Can't happen." Might want to print an error message. | |
4252 | abort() is not out of the question, but chances are GDB is just | |
4253 | a bit confused, not unusable. */ | |
4254 | #define err BPSTAT_WHAT_STOP_NOISY | |
4255 | ||
4256 | /* Given an old action and a class, come up with a new action. */ | |
4257 | /* One interesting property of this table is that wp_silent is the same | |
4258 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
4259 | after stopping, the check for whether to step over a breakpoint | |
4260 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
4261 | reference to how we stopped. We retain separate wp_silent and |
4262 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
4263 | |
4264 | Another possibly interesting property of this table is that | |
4265 | there's a partial ordering, priority-like, of the actions. Once | |
4266 | you've decided that some action is appropriate, you'll never go | |
4267 | back and decide something of a lower priority is better. The | |
4268 | ordering is: | |
4269 | ||
4efc6507 DE |
4270 | kc < jit clr sgl shl slr sn sr ss |
4271 | sgl < jit shl slr sn sr ss | |
4272 | slr < jit err shl sn sr ss | |
4273 | clr < jit err shl sn sr ss | |
4274 | ss < jit shl sn sr | |
4275 | sn < jit shl sr | |
4276 | jit < shl sr | |
d81191fc | 4277 | shl < sr |
4d5b2cd7 | 4278 | sr < |
c5aa993b | 4279 | |
43ff13b4 JM |
4280 | What I think this means is that we don't need a damned table |
4281 | here. If you just put the rows and columns in the right order, | |
4282 | it'd look awfully regular. We could simply walk the bpstat list | |
4283 | and choose the highest priority action we find, with a little | |
78b6a731 | 4284 | logic to handle the 'err' cases. */ |
c906108c SS |
4285 | |
4286 | /* step_resume entries: a step resume breakpoint overrides another | |
4287 | breakpoint of signal handling (see comment in wait_for_inferior | |
fcf70625 | 4288 | at where we set the step_resume breakpoint). */ |
c906108c SS |
4289 | |
4290 | static const enum bpstat_what_main_action | |
c5aa993b JM |
4291 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
4292 | { | |
4293 | /* old action */ | |
4efc6507 DE |
4294 | /* kc ss sn sgl slr clr sr shl jit */ |
4295 | /* no_effect */ {kc, ss, sn, sgl, slr, clr, sr, shl, jit}, | |
4296 | /* wp_silent */ {ss, ss, sn, ss, ss, ss, sr, shl, jit}, | |
4297 | /* wp_noisy */ {sn, sn, sn, sn, sn, sn, sr, shl, jit}, | |
4298 | /* bp_nostop */ {sgl, ss, sn, sgl, slr, slr, sr, shl, jit}, | |
4299 | /* bp_silent */ {ss, ss, sn, ss, ss, ss, sr, shl, jit}, | |
4300 | /* bp_noisy */ {sn, sn, sn, sn, sn, sn, sr, shl, jit}, | |
4301 | /* long_jump */ {slr, ss, sn, slr, slr, err, sr, shl, jit}, | |
4302 | /* long_resume */ {clr, ss, sn, err, err, err, sr, shl, jit}, | |
4303 | /* step_resume */ {sr, sr, sr, sr, sr, sr, sr, sr, sr }, | |
4304 | /* shlib */ {shl, shl, shl, shl, shl, shl, sr, shl, shl}, | |
4305 | /* jit_event */ {jit, jit, jit, jit, jit, jit, sr, jit, jit} | |
c5aa993b | 4306 | }; |
c906108c SS |
4307 | |
4308 | #undef kc | |
4309 | #undef ss | |
4310 | #undef sn | |
4311 | #undef sgl | |
4312 | #undef slr | |
4313 | #undef clr | |
c906108c SS |
4314 | #undef err |
4315 | #undef sr | |
4316 | #undef ts | |
4317 | #undef shl | |
4efc6507 | 4318 | #undef jit |
c906108c SS |
4319 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; |
4320 | struct bpstat_what retval; | |
4321 | ||
aa7d318d | 4322 | retval.call_dummy = STOP_NONE; |
c906108c SS |
4323 | for (; bs != NULL; bs = bs->next) |
4324 | { | |
4325 | enum class bs_class = no_effect; | |
4326 | if (bs->breakpoint_at == NULL) | |
4327 | /* I suspect this can happen if it was a momentary breakpoint | |
4328 | which has since been deleted. */ | |
4329 | continue; | |
20874c92 VP |
4330 | if (bs->breakpoint_at->owner == NULL) |
4331 | bs_class = bp_nostop; | |
4332 | else | |
4f8d1dc6 | 4333 | switch (bs->breakpoint_at->owner->type) |
c906108c SS |
4334 | { |
4335 | case bp_none: | |
4336 | continue; | |
4337 | ||
4338 | case bp_breakpoint: | |
4339 | case bp_hardware_breakpoint: | |
4340 | case bp_until: | |
4341 | case bp_finish: | |
4342 | if (bs->stop) | |
4343 | { | |
4344 | if (bs->print) | |
4345 | bs_class = bp_noisy; | |
4346 | else | |
4347 | bs_class = bp_silent; | |
4348 | } | |
4349 | else | |
4350 | bs_class = bp_nostop; | |
4351 | break; | |
4352 | case bp_watchpoint: | |
4353 | case bp_hardware_watchpoint: | |
4354 | case bp_read_watchpoint: | |
4355 | case bp_access_watchpoint: | |
4356 | if (bs->stop) | |
4357 | { | |
4358 | if (bs->print) | |
4359 | bs_class = wp_noisy; | |
4360 | else | |
4361 | bs_class = wp_silent; | |
4362 | } | |
4363 | else | |
53a5351d JM |
4364 | /* There was a watchpoint, but we're not stopping. |
4365 | This requires no further action. */ | |
c906108c SS |
4366 | bs_class = no_effect; |
4367 | break; | |
4368 | case bp_longjmp: | |
4369 | bs_class = long_jump; | |
4370 | break; | |
4371 | case bp_longjmp_resume: | |
4372 | bs_class = long_resume; | |
4373 | break; | |
4374 | case bp_step_resume: | |
4375 | if (bs->stop) | |
4376 | { | |
4377 | bs_class = step_resume; | |
4378 | } | |
4379 | else | |
4380 | /* It is for the wrong frame. */ | |
4381 | bs_class = bp_nostop; | |
4382 | break; | |
c906108c SS |
4383 | case bp_watchpoint_scope: |
4384 | bs_class = bp_nostop; | |
4385 | break; | |
c5aa993b JM |
4386 | case bp_shlib_event: |
4387 | bs_class = shlib_event; | |
4388 | break; | |
4efc6507 DE |
4389 | case bp_jit_event: |
4390 | bs_class = jit_event; | |
4391 | break; | |
c4093a6a | 4392 | case bp_thread_event: |
1900040c | 4393 | case bp_overlay_event: |
0fd8e87f | 4394 | case bp_longjmp_master: |
aa7d318d | 4395 | case bp_std_terminate_master: |
c4093a6a JM |
4396 | bs_class = bp_nostop; |
4397 | break; | |
ce78b96d | 4398 | case bp_catchpoint: |
c5aa993b JM |
4399 | if (bs->stop) |
4400 | { | |
4401 | if (bs->print) | |
4402 | bs_class = bp_noisy; | |
4403 | else | |
4404 | bs_class = bp_silent; | |
4405 | } | |
4406 | else | |
53a5351d JM |
4407 | /* There was a catchpoint, but we're not stopping. |
4408 | This requires no further action. */ | |
c5aa993b JM |
4409 | bs_class = no_effect; |
4410 | break; | |
c906108c | 4411 | case bp_call_dummy: |
53a5351d JM |
4412 | /* Make sure the action is stop (silent or noisy), |
4413 | so infrun.c pops the dummy frame. */ | |
c906108c | 4414 | bs_class = bp_silent; |
aa7d318d TT |
4415 | retval.call_dummy = STOP_STACK_DUMMY; |
4416 | break; | |
4417 | case bp_std_terminate: | |
4418 | /* Make sure the action is stop (silent or noisy), | |
4419 | so infrun.c pops the dummy frame. */ | |
4420 | bs_class = bp_silent; | |
4421 | retval.call_dummy = STOP_STD_TERMINATE; | |
c906108c | 4422 | break; |
1042e4c0 | 4423 | case bp_tracepoint: |
7a697b8d | 4424 | case bp_fast_tracepoint: |
1042e4c0 SS |
4425 | /* Tracepoint hits should not be reported back to GDB, and |
4426 | if one got through somehow, it should have been filtered | |
4427 | out already. */ | |
4428 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 4429 | _("bpstat_what: tracepoint encountered")); |
1042e4c0 | 4430 | break; |
c906108c | 4431 | } |
c5aa993b | 4432 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
4433 | } |
4434 | retval.main_action = current_action; | |
4435 | return retval; | |
4436 | } | |
4437 | ||
4438 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
4439 | without hardware support). This isn't related to a specific bpstat, | |
4440 | just to things like whether watchpoints are set. */ | |
4441 | ||
c5aa993b | 4442 | int |
fba45db2 | 4443 | bpstat_should_step (void) |
c906108c SS |
4444 | { |
4445 | struct breakpoint *b; | |
4446 | ALL_BREAKPOINTS (b) | |
717a8278 | 4447 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 4448 | return 1; |
c906108c SS |
4449 | return 0; |
4450 | } | |
4451 | ||
67822962 PA |
4452 | int |
4453 | bpstat_causes_stop (bpstat bs) | |
4454 | { | |
4455 | for (; bs != NULL; bs = bs->next) | |
4456 | if (bs->stop) | |
4457 | return 1; | |
4458 | ||
4459 | return 0; | |
4460 | } | |
4461 | ||
c906108c | 4462 | \f |
c5aa993b | 4463 | |
859825b8 JK |
4464 | /* Print the LOC location out of the list of B->LOC locations. */ |
4465 | ||
0d381245 VP |
4466 | static void print_breakpoint_location (struct breakpoint *b, |
4467 | struct bp_location *loc, | |
4468 | char *wrap_indent, | |
4469 | struct ui_stream *stb) | |
4470 | { | |
6c95b8df PA |
4471 | struct cleanup *old_chain = save_current_program_space (); |
4472 | ||
859825b8 JK |
4473 | if (loc != NULL && loc->shlib_disabled) |
4474 | loc = NULL; | |
4475 | ||
6c95b8df PA |
4476 | if (loc != NULL) |
4477 | set_current_program_space (loc->pspace); | |
4478 | ||
859825b8 | 4479 | if (b->source_file && loc) |
0d381245 VP |
4480 | { |
4481 | struct symbol *sym | |
4482 | = find_pc_sect_function (loc->address, loc->section); | |
4483 | if (sym) | |
4484 | { | |
4485 | ui_out_text (uiout, "in "); | |
4486 | ui_out_field_string (uiout, "func", | |
4487 | SYMBOL_PRINT_NAME (sym)); | |
4488 | ui_out_wrap_hint (uiout, wrap_indent); | |
4489 | ui_out_text (uiout, " at "); | |
4490 | } | |
4491 | ui_out_field_string (uiout, "file", b->source_file); | |
4492 | ui_out_text (uiout, ":"); | |
4493 | ||
4494 | if (ui_out_is_mi_like_p (uiout)) | |
4495 | { | |
4496 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
4497 | char *fullname = symtab_to_fullname (sal.symtab); | |
4498 | ||
4499 | if (fullname) | |
4500 | ui_out_field_string (uiout, "fullname", fullname); | |
4501 | } | |
4502 | ||
4503 | ui_out_field_int (uiout, "line", b->line_number); | |
4504 | } | |
859825b8 | 4505 | else if (loc) |
0d381245 | 4506 | { |
22e722e1 DJ |
4507 | print_address_symbolic (loc->gdbarch, loc->address, stb->stream, |
4508 | demangle, ""); | |
0d381245 VP |
4509 | ui_out_field_stream (uiout, "at", stb); |
4510 | } | |
859825b8 JK |
4511 | else |
4512 | ui_out_field_string (uiout, "pending", b->addr_string); | |
6c95b8df PA |
4513 | |
4514 | do_cleanups (old_chain); | |
0d381245 VP |
4515 | } |
4516 | ||
c4093a6a | 4517 | /* Print B to gdb_stdout. */ |
c906108c | 4518 | static void |
0d381245 VP |
4519 | print_one_breakpoint_location (struct breakpoint *b, |
4520 | struct bp_location *loc, | |
4521 | int loc_number, | |
a6d9a66e | 4522 | struct bp_location **last_loc, |
6c95b8df PA |
4523 | int print_address_bits, |
4524 | int allflag) | |
c906108c | 4525 | { |
52f0bd74 AC |
4526 | struct command_line *l; |
4527 | struct symbol *sym; | |
c4093a6a JM |
4528 | struct ep_type_description |
4529 | { | |
4530 | enum bptype type; | |
4531 | char *description; | |
4532 | }; | |
4533 | static struct ep_type_description bptypes[] = | |
c906108c | 4534 | { |
c5aa993b JM |
4535 | {bp_none, "?deleted?"}, |
4536 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 4537 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
4538 | {bp_until, "until"}, |
4539 | {bp_finish, "finish"}, | |
4540 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 4541 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
4542 | {bp_read_watchpoint, "read watchpoint"}, |
4543 | {bp_access_watchpoint, "acc watchpoint"}, | |
4544 | {bp_longjmp, "longjmp"}, | |
4545 | {bp_longjmp_resume, "longjmp resume"}, | |
4546 | {bp_step_resume, "step resume"}, | |
c5aa993b JM |
4547 | {bp_watchpoint_scope, "watchpoint scope"}, |
4548 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 4549 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 4550 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 4551 | {bp_thread_event, "thread events"}, |
1900040c | 4552 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 4553 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 4554 | {bp_std_terminate_master, "std::terminate master"}, |
ce78b96d | 4555 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 4556 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 4557 | {bp_fast_tracepoint, "fast tracepoint"}, |
4efc6507 | 4558 | {bp_jit_event, "jit events"}, |
c5aa993b | 4559 | }; |
c4093a6a | 4560 | |
c2c6d25f | 4561 | static char bpenables[] = "nynny"; |
c906108c | 4562 | char wrap_indent[80]; |
8b93c638 JM |
4563 | struct ui_stream *stb = ui_out_stream_new (uiout); |
4564 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 4565 | struct cleanup *bkpt_chain; |
c906108c | 4566 | |
0d381245 VP |
4567 | int header_of_multiple = 0; |
4568 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
4569 | struct value_print_options opts; |
4570 | ||
4571 | get_user_print_options (&opts); | |
0d381245 VP |
4572 | |
4573 | gdb_assert (!loc || loc_number != 0); | |
4574 | /* See comment in print_one_breakpoint concerning | |
4575 | treatment of breakpoints with single disabled | |
4576 | location. */ | |
4577 | if (loc == NULL | |
4578 | && (b->loc != NULL | |
4579 | && (b->loc->next != NULL || !b->loc->enabled))) | |
4580 | header_of_multiple = 1; | |
4581 | if (loc == NULL) | |
4582 | loc = b->loc; | |
4583 | ||
c4093a6a | 4584 | annotate_record (); |
3b31d625 | 4585 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
4586 | |
4587 | /* 1 */ | |
4588 | annotate_field (0); | |
0d381245 VP |
4589 | if (part_of_multiple) |
4590 | { | |
4591 | char *formatted; | |
0c6773c1 | 4592 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
4593 | ui_out_field_string (uiout, "number", formatted); |
4594 | xfree (formatted); | |
4595 | } | |
4596 | else | |
4597 | { | |
4598 | ui_out_field_int (uiout, "number", b->number); | |
4599 | } | |
c4093a6a JM |
4600 | |
4601 | /* 2 */ | |
4602 | annotate_field (1); | |
0d381245 VP |
4603 | if (part_of_multiple) |
4604 | ui_out_field_skip (uiout, "type"); | |
4605 | else | |
4606 | { | |
4607 | if (((int) b->type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
4608 | || ((int) b->type != bptypes[(int) b->type].type)) | |
4609 | internal_error (__FILE__, __LINE__, | |
4610 | _("bptypes table does not describe type #%d."), | |
4611 | (int) b->type); | |
4612 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); | |
4613 | } | |
c4093a6a JM |
4614 | |
4615 | /* 3 */ | |
4616 | annotate_field (2); | |
0d381245 VP |
4617 | if (part_of_multiple) |
4618 | ui_out_field_skip (uiout, "disp"); | |
4619 | else | |
2cec12e5 | 4620 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 4621 | |
c4093a6a JM |
4622 | |
4623 | /* 4 */ | |
4624 | annotate_field (3); | |
0d381245 | 4625 | if (part_of_multiple) |
54e52265 | 4626 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 4627 | else |
54e52265 VP |
4628 | ui_out_field_fmt (uiout, "enabled", "%c", |
4629 | bpenables[(int) b->enable_state]); | |
4630 | ui_out_spaces (uiout, 2); | |
0d381245 | 4631 | |
c4093a6a JM |
4632 | |
4633 | /* 5 and 6 */ | |
4634 | strcpy (wrap_indent, " "); | |
79a45b7d | 4635 | if (opts.addressprint) |
75ac9d7b | 4636 | { |
a6d9a66e | 4637 | if (print_address_bits <= 32) |
75ac9d7b MS |
4638 | strcat (wrap_indent, " "); |
4639 | else | |
4640 | strcat (wrap_indent, " "); | |
4641 | } | |
c906108c | 4642 | |
3086aeae | 4643 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 VP |
4644 | { |
4645 | /* Although the print_one can possibly print | |
4646 | all locations, calling it here is not likely | |
4647 | to get any nice result. So, make sure there's | |
4648 | just one location. */ | |
4649 | gdb_assert (b->loc == NULL || b->loc->next == NULL); | |
a6d9a66e | 4650 | b->ops->print_one (b, last_loc); |
0d381245 | 4651 | } |
3086aeae DJ |
4652 | else |
4653 | switch (b->type) | |
4654 | { | |
4655 | case bp_none: | |
4656 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 4657 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 4658 | break; |
c906108c | 4659 | |
3086aeae DJ |
4660 | case bp_watchpoint: |
4661 | case bp_hardware_watchpoint: | |
4662 | case bp_read_watchpoint: | |
4663 | case bp_access_watchpoint: | |
4664 | /* Field 4, the address, is omitted (which makes the columns | |
4665 | not line up too nicely with the headers, but the effect | |
4666 | is relatively readable). */ | |
79a45b7d | 4667 | if (opts.addressprint) |
3086aeae DJ |
4668 | ui_out_field_skip (uiout, "addr"); |
4669 | annotate_field (5); | |
fa8a61dc | 4670 | ui_out_field_string (uiout, "what", b->exp_string); |
3086aeae DJ |
4671 | break; |
4672 | ||
3086aeae DJ |
4673 | case bp_breakpoint: |
4674 | case bp_hardware_breakpoint: | |
4675 | case bp_until: | |
4676 | case bp_finish: | |
4677 | case bp_longjmp: | |
4678 | case bp_longjmp_resume: | |
4679 | case bp_step_resume: | |
3086aeae DJ |
4680 | case bp_watchpoint_scope: |
4681 | case bp_call_dummy: | |
aa7d318d | 4682 | case bp_std_terminate: |
3086aeae DJ |
4683 | case bp_shlib_event: |
4684 | case bp_thread_event: | |
4685 | case bp_overlay_event: | |
0fd8e87f | 4686 | case bp_longjmp_master: |
aa7d318d | 4687 | case bp_std_terminate_master: |
1042e4c0 | 4688 | case bp_tracepoint: |
7a697b8d | 4689 | case bp_fast_tracepoint: |
4efc6507 | 4690 | case bp_jit_event: |
79a45b7d | 4691 | if (opts.addressprint) |
3086aeae DJ |
4692 | { |
4693 | annotate_field (4); | |
54e52265 | 4694 | if (header_of_multiple) |
0d381245 | 4695 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 4696 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 4697 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 4698 | else |
5af949e3 UW |
4699 | ui_out_field_core_addr (uiout, "addr", |
4700 | loc->gdbarch, loc->address); | |
3086aeae DJ |
4701 | } |
4702 | annotate_field (5); | |
0d381245 VP |
4703 | if (!header_of_multiple) |
4704 | print_breakpoint_location (b, loc, wrap_indent, stb); | |
4705 | if (b->loc) | |
a6d9a66e | 4706 | *last_loc = b->loc; |
3086aeae DJ |
4707 | break; |
4708 | } | |
c906108c | 4709 | |
6c95b8df PA |
4710 | |
4711 | /* For backward compatibility, don't display inferiors unless there | |
4712 | are several. */ | |
4713 | if (loc != NULL | |
4714 | && !header_of_multiple | |
4715 | && (allflag | |
4716 | || (!gdbarch_has_global_breakpoints (target_gdbarch) | |
4717 | && (number_of_program_spaces () > 1 | |
4718 | || number_of_inferiors () > 1) | |
4719 | && loc->owner->type != bp_catchpoint))) | |
4720 | { | |
4721 | struct inferior *inf; | |
4722 | int first = 1; | |
4723 | ||
4724 | for (inf = inferior_list; inf != NULL; inf = inf->next) | |
4725 | { | |
4726 | if (inf->pspace == loc->pspace) | |
4727 | { | |
4728 | if (first) | |
4729 | { | |
4730 | first = 0; | |
4731 | ui_out_text (uiout, " inf "); | |
4732 | } | |
4733 | else | |
4734 | ui_out_text (uiout, ", "); | |
4735 | ui_out_text (uiout, plongest (inf->num)); | |
4736 | } | |
4737 | } | |
4738 | } | |
4739 | ||
4a306c9a | 4740 | if (!part_of_multiple) |
c4093a6a | 4741 | { |
4a306c9a JB |
4742 | if (b->thread != -1) |
4743 | { | |
4744 | /* FIXME: This seems to be redundant and lost here; see the | |
4745 | "stop only in" line a little further down. */ | |
4746 | ui_out_text (uiout, " thread "); | |
4747 | ui_out_field_int (uiout, "thread", b->thread); | |
4748 | } | |
4749 | else if (b->task != 0) | |
4750 | { | |
4751 | ui_out_text (uiout, " task "); | |
4752 | ui_out_field_int (uiout, "task", b->task); | |
4753 | } | |
c4093a6a JM |
4754 | } |
4755 | ||
8b93c638 | 4756 | ui_out_text (uiout, "\n"); |
c4093a6a | 4757 | |
0d381245 | 4758 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
4759 | { |
4760 | annotate_field (6); | |
8b93c638 | 4761 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
4762 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
4763 | the frame ID. */ | |
5af949e3 UW |
4764 | ui_out_field_core_addr (uiout, "frame", |
4765 | b->gdbarch, b->frame_id.stack_addr); | |
8b93c638 | 4766 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
4767 | } |
4768 | ||
0d381245 | 4769 | if (!part_of_multiple && b->cond_string && !ada_exception_catchpoint_p (b)) |
c4093a6a | 4770 | { |
f7f9143b JB |
4771 | /* We do not print the condition for Ada exception catchpoints |
4772 | because the condition is an internal implementation detail | |
4773 | that we do not want to expose to the user. */ | |
c4093a6a | 4774 | annotate_field (7); |
7a697b8d | 4775 | if (tracepoint_type (b)) |
1042e4c0 SS |
4776 | ui_out_text (uiout, "\ttrace only if "); |
4777 | else | |
4778 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 JJ |
4779 | ui_out_field_string (uiout, "cond", b->cond_string); |
4780 | ui_out_text (uiout, "\n"); | |
4781 | } | |
4782 | ||
0d381245 | 4783 | if (!part_of_multiple && b->thread != -1) |
c4093a6a JM |
4784 | { |
4785 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
4786 | ui_out_text (uiout, "\tstop only in thread "); |
4787 | ui_out_field_int (uiout, "thread", b->thread); | |
4788 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
4789 | } |
4790 | ||
63c715c6 | 4791 | if (!part_of_multiple && b->hit_count) |
c4093a6a JM |
4792 | { |
4793 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
4794 | if (ep_is_catchpoint (b)) |
4795 | ui_out_text (uiout, "\tcatchpoint"); | |
4796 | else | |
4797 | ui_out_text (uiout, "\tbreakpoint"); | |
4798 | ui_out_text (uiout, " already hit "); | |
4799 | ui_out_field_int (uiout, "times", b->hit_count); | |
4800 | if (b->hit_count == 1) | |
4801 | ui_out_text (uiout, " time\n"); | |
4802 | else | |
4803 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
4804 | } |
4805 | ||
fb40c209 AC |
4806 | /* Output the count also if it is zero, but only if this is |
4807 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 4808 | if (ui_out_is_mi_like_p (uiout)) |
63c715c6 | 4809 | if (!part_of_multiple && b->hit_count == 0) |
fb40c209 | 4810 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 4811 | |
0d381245 | 4812 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
4813 | { |
4814 | annotate_field (8); | |
8b93c638 JM |
4815 | ui_out_text (uiout, "\tignore next "); |
4816 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
4817 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 4818 | } |
059fb39f | 4819 | |
9add0f1b | 4820 | l = b->commands ? b->commands->commands : NULL; |
059fb39f | 4821 | if (!part_of_multiple && l) |
c4093a6a | 4822 | { |
3b31d625 EZ |
4823 | struct cleanup *script_chain; |
4824 | ||
c4093a6a | 4825 | annotate_field (9); |
3b31d625 | 4826 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 4827 | print_command_lines (uiout, l, 4); |
3b31d625 | 4828 | do_cleanups (script_chain); |
c4093a6a | 4829 | } |
d24317b4 | 4830 | |
1042e4c0 SS |
4831 | if (!part_of_multiple && b->pass_count) |
4832 | { | |
4833 | annotate_field (10); | |
4834 | ui_out_text (uiout, "\tpass count "); | |
4835 | ui_out_field_int (uiout, "pass", b->pass_count); | |
4836 | ui_out_text (uiout, " \n"); | |
4837 | } | |
4838 | ||
d24317b4 VP |
4839 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
4840 | { | |
4841 | if (b->addr_string) | |
4842 | ui_out_field_string (uiout, "original-location", b->addr_string); | |
4843 | else if (b->exp_string) | |
4844 | ui_out_field_string (uiout, "original-location", b->exp_string); | |
4845 | } | |
4846 | ||
3b31d625 | 4847 | do_cleanups (bkpt_chain); |
8b93c638 | 4848 | do_cleanups (old_chain); |
c4093a6a | 4849 | } |
c5aa993b | 4850 | |
0d381245 VP |
4851 | static void |
4852 | print_one_breakpoint (struct breakpoint *b, | |
6c95b8df PA |
4853 | struct bp_location **last_loc, int print_address_bits, |
4854 | int allflag) | |
0d381245 | 4855 | { |
6c95b8df PA |
4856 | print_one_breakpoint_location (b, NULL, 0, last_loc, |
4857 | print_address_bits, allflag); | |
0d381245 VP |
4858 | |
4859 | /* If this breakpoint has custom print function, | |
4860 | it's already printed. Otherwise, print individual | |
4861 | locations, if any. */ | |
4862 | if (b->ops == NULL || b->ops->print_one == NULL) | |
4863 | { | |
4864 | /* If breakpoint has a single location that is | |
4865 | disabled, we print it as if it had | |
4866 | several locations, since otherwise it's hard to | |
4867 | represent "breakpoint enabled, location disabled" | |
a5606eee VP |
4868 | situation. |
4869 | Note that while hardware watchpoints have | |
4870 | several locations internally, that's no a property | |
4871 | exposed to user. */ | |
0d381245 | 4872 | if (b->loc |
a5606eee | 4873 | && !is_hardware_watchpoint (b) |
0d381245 | 4874 | && (b->loc->next || !b->loc->enabled) |
a5606eee | 4875 | && !ui_out_is_mi_like_p (uiout)) |
0d381245 VP |
4876 | { |
4877 | struct bp_location *loc; | |
4878 | int n = 1; | |
4879 | for (loc = b->loc; loc; loc = loc->next, ++n) | |
a6d9a66e | 4880 | print_one_breakpoint_location (b, loc, n, last_loc, |
6c95b8df | 4881 | print_address_bits, allflag); |
0d381245 VP |
4882 | } |
4883 | } | |
4884 | } | |
4885 | ||
a6d9a66e UW |
4886 | static int |
4887 | breakpoint_address_bits (struct breakpoint *b) | |
4888 | { | |
4889 | int print_address_bits = 0; | |
4890 | struct bp_location *loc; | |
4891 | ||
4892 | for (loc = b->loc; loc; loc = loc->next) | |
4893 | { | |
c7437ca6 PA |
4894 | int addr_bit; |
4895 | ||
4896 | /* Software watchpoints that aren't watching memory don't have | |
4897 | an address to print. */ | |
4898 | if (b->type == bp_watchpoint && loc->watchpoint_type == -1) | |
4899 | continue; | |
4900 | ||
4901 | addr_bit = gdbarch_addr_bit (loc->gdbarch); | |
a6d9a66e UW |
4902 | if (addr_bit > print_address_bits) |
4903 | print_address_bits = addr_bit; | |
4904 | } | |
4905 | ||
4906 | return print_address_bits; | |
4907 | } | |
0d381245 | 4908 | |
c4093a6a JM |
4909 | struct captured_breakpoint_query_args |
4910 | { | |
4911 | int bnum; | |
4912 | }; | |
c5aa993b | 4913 | |
c4093a6a | 4914 | static int |
2b65245e | 4915 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
4916 | { |
4917 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 4918 | struct breakpoint *b; |
a6d9a66e | 4919 | struct bp_location *dummy_loc = NULL; |
c4093a6a JM |
4920 | ALL_BREAKPOINTS (b) |
4921 | { | |
4922 | if (args->bnum == b->number) | |
c5aa993b | 4923 | { |
a6d9a66e | 4924 | int print_address_bits = breakpoint_address_bits (b); |
6c95b8df | 4925 | print_one_breakpoint (b, &dummy_loc, print_address_bits, 0); |
c4093a6a | 4926 | return GDB_RC_OK; |
c5aa993b | 4927 | } |
c4093a6a JM |
4928 | } |
4929 | return GDB_RC_NONE; | |
4930 | } | |
c5aa993b | 4931 | |
c4093a6a | 4932 | enum gdb_rc |
ce43223b | 4933 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, char **error_message) |
c4093a6a JM |
4934 | { |
4935 | struct captured_breakpoint_query_args args; | |
4936 | args.bnum = bnum; | |
4937 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
4938 | an error. */ | |
b0b13bb4 DJ |
4939 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
4940 | error_message, RETURN_MASK_ALL) < 0) | |
4941 | return GDB_RC_FAIL; | |
4942 | else | |
4943 | return GDB_RC_OK; | |
c4093a6a | 4944 | } |
c5aa993b | 4945 | |
7f3b0473 AC |
4946 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
4947 | catchpoints, et.al.). */ | |
4948 | ||
4949 | static int | |
4950 | user_settable_breakpoint (const struct breakpoint *b) | |
4951 | { | |
4952 | return (b->type == bp_breakpoint | |
ce78b96d | 4953 | || b->type == bp_catchpoint |
7f3b0473 | 4954 | || b->type == bp_hardware_breakpoint |
7a697b8d | 4955 | || tracepoint_type (b) |
7f3b0473 AC |
4956 | || b->type == bp_watchpoint |
4957 | || b->type == bp_read_watchpoint | |
4958 | || b->type == bp_access_watchpoint | |
4959 | || b->type == bp_hardware_watchpoint); | |
4960 | } | |
4961 | ||
4962 | /* Print information on user settable breakpoint (watchpoint, etc) | |
4963 | number BNUM. If BNUM is -1 print all user settable breakpoints. | |
4964 | If ALLFLAG is non-zero, include non- user settable breakpoints. */ | |
c906108c | 4965 | |
c4093a6a | 4966 | static void |
fba45db2 | 4967 | breakpoint_1 (int bnum, int allflag) |
c4093a6a | 4968 | { |
52f0bd74 | 4969 | struct breakpoint *b; |
a6d9a66e | 4970 | struct bp_location *last_loc = NULL; |
7f3b0473 | 4971 | int nr_printable_breakpoints; |
3b31d625 | 4972 | struct cleanup *bkpttbl_chain; |
79a45b7d | 4973 | struct value_print_options opts; |
a6d9a66e | 4974 | int print_address_bits = 0; |
c4093a6a | 4975 | |
79a45b7d TT |
4976 | get_user_print_options (&opts); |
4977 | ||
a6d9a66e UW |
4978 | /* Compute the number of rows in the table, as well as the |
4979 | size required for address fields. */ | |
7f3b0473 AC |
4980 | nr_printable_breakpoints = 0; |
4981 | ALL_BREAKPOINTS (b) | |
4982 | if (bnum == -1 | |
4983 | || bnum == b->number) | |
4984 | { | |
4985 | if (allflag || user_settable_breakpoint (b)) | |
a6d9a66e UW |
4986 | { |
4987 | int addr_bit = breakpoint_address_bits (b); | |
4988 | if (addr_bit > print_address_bits) | |
4989 | print_address_bits = addr_bit; | |
4990 | ||
4991 | nr_printable_breakpoints++; | |
4992 | } | |
7f3b0473 AC |
4993 | } |
4994 | ||
79a45b7d | 4995 | if (opts.addressprint) |
3b31d625 EZ |
4996 | bkpttbl_chain |
4997 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
4998 | "BreakpointTable"); | |
8b93c638 | 4999 | else |
3b31d625 EZ |
5000 | bkpttbl_chain |
5001 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
5002 | "BreakpointTable"); | |
8b93c638 | 5003 | |
7f3b0473 | 5004 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
5005 | annotate_breakpoints_headers (); |
5006 | if (nr_printable_breakpoints > 0) | |
5007 | annotate_field (0); | |
0d381245 | 5008 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
5009 | if (nr_printable_breakpoints > 0) |
5010 | annotate_field (1); | |
5011 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
5012 | if (nr_printable_breakpoints > 0) | |
5013 | annotate_field (2); | |
5014 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
5015 | if (nr_printable_breakpoints > 0) | |
5016 | annotate_field (3); | |
54e52265 | 5017 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 5018 | if (opts.addressprint) |
7f3b0473 | 5019 | { |
d7faa9e7 AC |
5020 | if (nr_printable_breakpoints > 0) |
5021 | annotate_field (4); | |
a6d9a66e | 5022 | if (print_address_bits <= 32) |
b25959ec | 5023 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 5024 | else |
b25959ec | 5025 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 5026 | } |
d7faa9e7 AC |
5027 | if (nr_printable_breakpoints > 0) |
5028 | annotate_field (5); | |
5029 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
5030 | ui_out_table_body (uiout); | |
5031 | if (nr_printable_breakpoints > 0) | |
5032 | annotate_breakpoints_table (); | |
7f3b0473 | 5033 | |
c4093a6a | 5034 | ALL_BREAKPOINTS (b) |
bad56014 TT |
5035 | { |
5036 | QUIT; | |
c4093a6a JM |
5037 | if (bnum == -1 |
5038 | || bnum == b->number) | |
5039 | { | |
5040 | /* We only print out user settable breakpoints unless the | |
5041 | allflag is set. */ | |
7f3b0473 | 5042 | if (allflag || user_settable_breakpoint (b)) |
6c95b8df | 5043 | print_one_breakpoint (b, &last_loc, print_address_bits, allflag); |
c4093a6a | 5044 | } |
bad56014 | 5045 | } |
c4093a6a | 5046 | |
3b31d625 | 5047 | do_cleanups (bkpttbl_chain); |
698384cd | 5048 | |
7f3b0473 | 5049 | if (nr_printable_breakpoints == 0) |
c906108c | 5050 | { |
8b93c638 JM |
5051 | if (bnum == -1) |
5052 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
5053 | else | |
5054 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
5055 | bnum); | |
c906108c SS |
5056 | } |
5057 | else | |
c4093a6a | 5058 | { |
a6d9a66e UW |
5059 | if (last_loc && !server_command) |
5060 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 5061 | } |
c906108c | 5062 | |
c4093a6a JM |
5063 | /* FIXME? Should this be moved up so that it is only called when |
5064 | there have been breakpoints? */ | |
c906108c SS |
5065 | annotate_breakpoints_table_end (); |
5066 | } | |
5067 | ||
c906108c | 5068 | static void |
fba45db2 | 5069 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
5070 | { |
5071 | int bnum = -1; | |
5072 | ||
5073 | if (bnum_exp) | |
bb518678 | 5074 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
5075 | |
5076 | breakpoint_1 (bnum, 0); | |
5077 | } | |
5078 | ||
7a292a7a | 5079 | static void |
fba45db2 | 5080 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
5081 | { |
5082 | int bnum = -1; | |
5083 | ||
5084 | if (bnum_exp) | |
bb518678 | 5085 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
5086 | |
5087 | breakpoint_1 (bnum, 1); | |
5088 | } | |
5089 | ||
0d381245 | 5090 | static int |
714835d5 | 5091 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 5092 | struct program_space *pspace, |
714835d5 | 5093 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
5094 | { |
5095 | struct bp_location *bl = b->loc; | |
5096 | for (; bl; bl = bl->next) | |
5097 | { | |
6c95b8df PA |
5098 | if (bl->pspace == pspace |
5099 | && bl->address == pc | |
0d381245 VP |
5100 | && (!overlay_debugging || bl->section == section)) |
5101 | return 1; | |
5102 | } | |
5103 | return 0; | |
5104 | } | |
5105 | ||
6c95b8df PA |
5106 | /* Print a message describing any breakpoints set at PC. This |
5107 | concerns with logical breakpoints, so we match program spaces, not | |
5108 | address spaces. */ | |
c906108c SS |
5109 | |
5110 | static void | |
6c95b8df PA |
5111 | describe_other_breakpoints (struct gdbarch *gdbarch, |
5112 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 5113 | struct obj_section *section, int thread) |
c906108c | 5114 | { |
52f0bd74 AC |
5115 | int others = 0; |
5116 | struct breakpoint *b; | |
c906108c SS |
5117 | |
5118 | ALL_BREAKPOINTS (b) | |
6c95b8df | 5119 | others += breakpoint_has_pc (b, pspace, pc, section); |
c906108c SS |
5120 | if (others > 0) |
5121 | { | |
a3f17187 AC |
5122 | if (others == 1) |
5123 | printf_filtered (_("Note: breakpoint ")); | |
5124 | else /* if (others == ???) */ | |
5125 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 5126 | ALL_BREAKPOINTS (b) |
6c95b8df | 5127 | if (breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
5128 | { |
5129 | others--; | |
5130 | printf_filtered ("%d", b->number); | |
5131 | if (b->thread == -1 && thread != -1) | |
5132 | printf_filtered (" (all threads)"); | |
5133 | else if (b->thread != -1) | |
5134 | printf_filtered (" (thread %d)", b->thread); | |
5135 | printf_filtered ("%s%s ", | |
059fb39f | 5136 | ((b->enable_state == bp_disabled |
8bea4e01 UW |
5137 | || b->enable_state == bp_call_disabled |
5138 | || b->enable_state == bp_startup_disabled) | |
0d381245 VP |
5139 | ? " (disabled)" |
5140 | : b->enable_state == bp_permanent | |
5141 | ? " (permanent)" | |
5142 | : ""), | |
5143 | (others > 1) ? "," | |
5144 | : ((others == 1) ? " and" : "")); | |
5145 | } | |
a3f17187 | 5146 | printf_filtered (_("also set at pc ")); |
5af949e3 | 5147 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
5148 | printf_filtered (".\n"); |
5149 | } | |
5150 | } | |
5151 | \f | |
5152 | /* Set the default place to put a breakpoint | |
5153 | for the `break' command with no arguments. */ | |
5154 | ||
5155 | void | |
6c95b8df PA |
5156 | set_default_breakpoint (int valid, struct program_space *pspace, |
5157 | CORE_ADDR addr, struct symtab *symtab, | |
fba45db2 | 5158 | int line) |
c906108c SS |
5159 | { |
5160 | default_breakpoint_valid = valid; | |
6c95b8df | 5161 | default_breakpoint_pspace = pspace; |
c906108c SS |
5162 | default_breakpoint_address = addr; |
5163 | default_breakpoint_symtab = symtab; | |
5164 | default_breakpoint_line = line; | |
5165 | } | |
5166 | ||
e4f237da KB |
5167 | /* Return true iff it is meaningful to use the address member of |
5168 | BPT. For some breakpoint types, the address member is irrelevant | |
5169 | and it makes no sense to attempt to compare it to other addresses | |
5170 | (or use it for any other purpose either). | |
5171 | ||
5172 | More specifically, each of the following breakpoint types will always | |
876fa593 JK |
5173 | have a zero valued address and we don't want to mark breakpoints of any of |
5174 | these types to be a duplicate of an actual breakpoint at address zero: | |
e4f237da KB |
5175 | |
5176 | bp_watchpoint | |
2d134ed3 PA |
5177 | bp_catchpoint |
5178 | ||
5179 | */ | |
e4f237da KB |
5180 | |
5181 | static int | |
5182 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
5183 | { | |
5184 | enum bptype type = bpt->type; | |
5185 | ||
2d134ed3 PA |
5186 | return (type != bp_watchpoint && type != bp_catchpoint); |
5187 | } | |
5188 | ||
5189 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
5190 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
5191 | ||
5192 | static int | |
5193 | watchpoint_locations_match (struct bp_location *loc1, struct bp_location *loc2) | |
5194 | { | |
85d721b8 PA |
5195 | /* Note that this checks the owner's type, not the location's. In |
5196 | case the target does not support read watchpoints, but does | |
5197 | support access watchpoints, we'll have bp_read_watchpoint | |
5198 | watchpoints with hw_access locations. Those should be considered | |
5199 | duplicates of hw_read locations. The hw_read locations will | |
5200 | become hw_access locations later. */ | |
2d134ed3 PA |
5201 | return (loc1->owner->type == loc2->owner->type |
5202 | && loc1->pspace->aspace == loc2->pspace->aspace | |
5203 | && loc1->address == loc2->address | |
5204 | && loc1->length == loc2->length); | |
e4f237da KB |
5205 | } |
5206 | ||
6c95b8df PA |
5207 | /* Returns true if {ASPACE1,ADDR1} and {ASPACE2,ADDR2} represent the |
5208 | same breakpoint location. In most targets, this can only be true | |
5209 | if ASPACE1 matches ASPACE2. On targets that have global | |
5210 | breakpoints, the address space doesn't really matter. */ | |
5211 | ||
5212 | static int | |
5213 | breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1, | |
5214 | struct address_space *aspace2, CORE_ADDR addr2) | |
5215 | { | |
5216 | return ((gdbarch_has_global_breakpoints (target_gdbarch) | |
5217 | || aspace1 == aspace2) | |
5218 | && addr1 == addr2); | |
5219 | } | |
5220 | ||
2d134ed3 PA |
5221 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
5222 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
5223 | represent the same location. */ | |
5224 | ||
5225 | static int | |
5226 | breakpoint_locations_match (struct bp_location *loc1, struct bp_location *loc2) | |
5227 | { | |
5228 | int hw_point1 = is_hardware_watchpoint (loc1->owner); | |
5229 | int hw_point2 = is_hardware_watchpoint (loc2->owner); | |
5230 | ||
5231 | if (hw_point1 != hw_point2) | |
5232 | return 0; | |
5233 | else if (hw_point1) | |
5234 | return watchpoint_locations_match (loc1, loc2); | |
5235 | else | |
5236 | return breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
5237 | loc2->pspace->aspace, loc2->address); | |
5238 | } | |
5239 | ||
76897487 KB |
5240 | static void |
5241 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
5242 | int bnum, int have_bnum) | |
5243 | { | |
5244 | char astr1[40]; | |
5245 | char astr2[40]; | |
5246 | ||
bb599908 PH |
5247 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
5248 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 5249 | if (have_bnum) |
8a3fe4f8 | 5250 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
5251 | bnum, astr1, astr2); |
5252 | else | |
8a3fe4f8 | 5253 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
5254 | } |
5255 | ||
5256 | /* Adjust a breakpoint's address to account for architectural constraints | |
5257 | on breakpoint placement. Return the adjusted address. Note: Very | |
5258 | few targets require this kind of adjustment. For most targets, | |
5259 | this function is simply the identity function. */ | |
5260 | ||
5261 | static CORE_ADDR | |
a6d9a66e UW |
5262 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
5263 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 5264 | { |
a6d9a66e | 5265 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
5266 | { |
5267 | /* Very few targets need any kind of breakpoint adjustment. */ | |
5268 | return bpaddr; | |
5269 | } | |
88f7da05 KB |
5270 | else if (bptype == bp_watchpoint |
5271 | || bptype == bp_hardware_watchpoint | |
5272 | || bptype == bp_read_watchpoint | |
5273 | || bptype == bp_access_watchpoint | |
fe798b75 | 5274 | || bptype == bp_catchpoint) |
88f7da05 KB |
5275 | { |
5276 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
5277 | have their addresses modified. */ | |
5278 | return bpaddr; | |
5279 | } | |
76897487 KB |
5280 | else |
5281 | { | |
5282 | CORE_ADDR adjusted_bpaddr; | |
5283 | ||
5284 | /* Some targets have architectural constraints on the placement | |
5285 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 5286 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
5287 | |
5288 | /* An adjusted breakpoint address can significantly alter | |
5289 | a user's expectations. Print a warning if an adjustment | |
5290 | is required. */ | |
5291 | if (adjusted_bpaddr != bpaddr) | |
5292 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
5293 | ||
5294 | return adjusted_bpaddr; | |
5295 | } | |
5296 | } | |
5297 | ||
7cc221ef DJ |
5298 | /* Allocate a struct bp_location. */ |
5299 | ||
26bb91f3 | 5300 | static struct bp_location * |
39d61571 | 5301 | allocate_bp_location (struct breakpoint *bpt) |
7cc221ef DJ |
5302 | { |
5303 | struct bp_location *loc, *loc_p; | |
5304 | ||
5305 | loc = xmalloc (sizeof (struct bp_location)); | |
5306 | memset (loc, 0, sizeof (*loc)); | |
5307 | ||
e049a4b5 | 5308 | loc->owner = bpt; |
511a6cd4 | 5309 | loc->cond = NULL; |
0d381245 VP |
5310 | loc->shlib_disabled = 0; |
5311 | loc->enabled = 1; | |
e049a4b5 | 5312 | |
39d61571 | 5313 | switch (bpt->type) |
e049a4b5 DJ |
5314 | { |
5315 | case bp_breakpoint: | |
5316 | case bp_until: | |
5317 | case bp_finish: | |
5318 | case bp_longjmp: | |
5319 | case bp_longjmp_resume: | |
5320 | case bp_step_resume: | |
e049a4b5 DJ |
5321 | case bp_watchpoint_scope: |
5322 | case bp_call_dummy: | |
aa7d318d | 5323 | case bp_std_terminate: |
e049a4b5 DJ |
5324 | case bp_shlib_event: |
5325 | case bp_thread_event: | |
5326 | case bp_overlay_event: | |
4efc6507 | 5327 | case bp_jit_event: |
0fd8e87f | 5328 | case bp_longjmp_master: |
aa7d318d | 5329 | case bp_std_terminate_master: |
e049a4b5 DJ |
5330 | loc->loc_type = bp_loc_software_breakpoint; |
5331 | break; | |
5332 | case bp_hardware_breakpoint: | |
5333 | loc->loc_type = bp_loc_hardware_breakpoint; | |
5334 | break; | |
5335 | case bp_hardware_watchpoint: | |
5336 | case bp_read_watchpoint: | |
5337 | case bp_access_watchpoint: | |
5338 | loc->loc_type = bp_loc_hardware_watchpoint; | |
5339 | break; | |
5340 | case bp_watchpoint: | |
ce78b96d | 5341 | case bp_catchpoint: |
15c3d785 PA |
5342 | case bp_tracepoint: |
5343 | case bp_fast_tracepoint: | |
e049a4b5 DJ |
5344 | loc->loc_type = bp_loc_other; |
5345 | break; | |
5346 | default: | |
e2e0b3e5 | 5347 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
5348 | } |
5349 | ||
7cc221ef DJ |
5350 | return loc; |
5351 | } | |
5352 | ||
fe3f5fa8 VP |
5353 | static void free_bp_location (struct bp_location *loc) |
5354 | { | |
5355 | if (loc->cond) | |
5356 | xfree (loc->cond); | |
74960c60 VP |
5357 | |
5358 | if (loc->function_name) | |
5359 | xfree (loc->function_name); | |
5360 | ||
fe3f5fa8 VP |
5361 | xfree (loc); |
5362 | } | |
5363 | ||
0d381245 VP |
5364 | /* Helper to set_raw_breakpoint below. Creates a breakpoint |
5365 | that has type BPTYPE and has no locations as yet. */ | |
63c252f8 | 5366 | /* This function is used in gdbtk sources and thus can not be made static. */ |
c906108c | 5367 | |
c40e75cd | 5368 | static struct breakpoint * |
a6d9a66e UW |
5369 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, |
5370 | enum bptype bptype) | |
c906108c | 5371 | { |
52f0bd74 | 5372 | struct breakpoint *b, *b1; |
c906108c SS |
5373 | |
5374 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
5375 | memset (b, 0, sizeof (*b)); | |
2219d63c | 5376 | |
4d28f7a8 | 5377 | b->type = bptype; |
a6d9a66e | 5378 | b->gdbarch = gdbarch; |
c906108c SS |
5379 | b->language = current_language->la_language; |
5380 | b->input_radix = input_radix; | |
5381 | b->thread = -1; | |
b5de0fa7 | 5382 | b->enable_state = bp_enabled; |
c906108c SS |
5383 | b->next = 0; |
5384 | b->silent = 0; | |
5385 | b->ignore_count = 0; | |
5386 | b->commands = NULL; | |
818dd999 | 5387 | b->frame_id = null_frame_id; |
3a3e9ee3 | 5388 | b->forked_inferior_pid = null_ptid; |
c906108c | 5389 | b->exec_pathname = NULL; |
a96d9b2e | 5390 | b->syscalls_to_be_caught = NULL; |
3086aeae | 5391 | b->ops = NULL; |
0d381245 | 5392 | b->condition_not_parsed = 0; |
c906108c SS |
5393 | |
5394 | /* Add this breakpoint to the end of the chain | |
5395 | so that a list of breakpoints will come out in order | |
5396 | of increasing numbers. */ | |
5397 | ||
5398 | b1 = breakpoint_chain; | |
5399 | if (b1 == 0) | |
5400 | breakpoint_chain = b; | |
5401 | else | |
5402 | { | |
5403 | while (b1->next) | |
5404 | b1 = b1->next; | |
5405 | b1->next = b; | |
5406 | } | |
0d381245 VP |
5407 | return b; |
5408 | } | |
5409 | ||
5410 | /* Initialize loc->function_name. */ | |
5411 | static void | |
5412 | set_breakpoint_location_function (struct bp_location *loc) | |
5413 | { | |
5414 | if (loc->owner->type == bp_breakpoint | |
1042e4c0 | 5415 | || loc->owner->type == bp_hardware_breakpoint |
7a697b8d | 5416 | || tracepoint_type (loc->owner)) |
0d381245 VP |
5417 | { |
5418 | find_pc_partial_function (loc->address, &(loc->function_name), | |
5419 | NULL, NULL); | |
5420 | if (loc->function_name) | |
5421 | loc->function_name = xstrdup (loc->function_name); | |
5422 | } | |
5423 | } | |
5424 | ||
a6d9a66e UW |
5425 | /* Attempt to determine architecture of location identified by SAL. */ |
5426 | static struct gdbarch * | |
5427 | get_sal_arch (struct symtab_and_line sal) | |
5428 | { | |
5429 | if (sal.section) | |
5430 | return get_objfile_arch (sal.section->objfile); | |
5431 | if (sal.symtab) | |
5432 | return get_objfile_arch (sal.symtab->objfile); | |
5433 | ||
5434 | return NULL; | |
5435 | } | |
5436 | ||
0d381245 VP |
5437 | /* set_raw_breakpoint is a low level routine for allocating and |
5438 | partially initializing a breakpoint of type BPTYPE. The newly | |
5439 | created breakpoint's address, section, source file name, and line | |
5440 | number are provided by SAL. The newly created and partially | |
5441 | initialized breakpoint is added to the breakpoint chain and | |
5442 | is also returned as the value of this function. | |
5443 | ||
5444 | It is expected that the caller will complete the initialization of | |
5445 | the newly created breakpoint struct as well as output any status | |
5446 | information regarding the creation of a new breakpoint. In | |
5447 | particular, set_raw_breakpoint does NOT set the breakpoint | |
5448 | number! Care should be taken to not allow an error to occur | |
5449 | prior to completing the initialization of the breakpoint. If this | |
5450 | should happen, a bogus breakpoint will be left on the chain. */ | |
5451 | ||
63c252f8 | 5452 | struct breakpoint * |
a6d9a66e UW |
5453 | set_raw_breakpoint (struct gdbarch *gdbarch, |
5454 | struct symtab_and_line sal, enum bptype bptype) | |
0d381245 | 5455 | { |
a6d9a66e | 5456 | struct breakpoint *b = set_raw_breakpoint_without_location (gdbarch, bptype); |
0d381245 | 5457 | CORE_ADDR adjusted_address; |
a6d9a66e UW |
5458 | struct gdbarch *loc_gdbarch; |
5459 | ||
5460 | loc_gdbarch = get_sal_arch (sal); | |
5461 | if (!loc_gdbarch) | |
5462 | loc_gdbarch = b->gdbarch; | |
0d381245 | 5463 | |
6c95b8df PA |
5464 | if (bptype != bp_catchpoint) |
5465 | gdb_assert (sal.pspace != NULL); | |
5466 | ||
0d381245 VP |
5467 | /* Adjust the breakpoint's address prior to allocating a location. |
5468 | Once we call allocate_bp_location(), that mostly uninitialized | |
5469 | location will be placed on the location chain. Adjustment of the | |
8defab1a | 5470 | breakpoint may cause target_read_memory() to be called and we do |
0d381245 VP |
5471 | not want its scan of the location chain to find a breakpoint and |
5472 | location that's only been partially initialized. */ | |
a6d9a66e | 5473 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, sal.pc, b->type); |
0d381245 | 5474 | |
39d61571 | 5475 | b->loc = allocate_bp_location (b); |
a6d9a66e | 5476 | b->loc->gdbarch = loc_gdbarch; |
0d381245 VP |
5477 | b->loc->requested_address = sal.pc; |
5478 | b->loc->address = adjusted_address; | |
6c95b8df PA |
5479 | b->loc->pspace = sal.pspace; |
5480 | ||
5481 | /* Store the program space that was used to set the breakpoint, for | |
5482 | breakpoint resetting. */ | |
5483 | b->pspace = sal.pspace; | |
0d381245 VP |
5484 | |
5485 | if (sal.symtab == NULL) | |
5486 | b->source_file = NULL; | |
5487 | else | |
1b36a34b | 5488 | b->source_file = xstrdup (sal.symtab->filename); |
0d381245 VP |
5489 | b->loc->section = sal.section; |
5490 | b->line_number = sal.line; | |
5491 | ||
5492 | set_breakpoint_location_function (b->loc); | |
c906108c | 5493 | |
c906108c SS |
5494 | breakpoints_changed (); |
5495 | ||
5496 | return b; | |
5497 | } | |
5498 | ||
c2c6d25f JM |
5499 | |
5500 | /* Note that the breakpoint object B describes a permanent breakpoint | |
5501 | instruction, hard-wired into the inferior's code. */ | |
5502 | void | |
5503 | make_breakpoint_permanent (struct breakpoint *b) | |
5504 | { | |
0d381245 | 5505 | struct bp_location *bl; |
b5de0fa7 | 5506 | b->enable_state = bp_permanent; |
c2c6d25f | 5507 | |
0d381245 VP |
5508 | /* By definition, permanent breakpoints are already present in the code. |
5509 | Mark all locations as inserted. For now, make_breakpoint_permanent | |
5510 | is called in just one place, so it's hard to say if it's reasonable | |
5511 | to have permanent breakpoint with multiple locations or not, | |
5512 | but it's easy to implmement. */ | |
5513 | for (bl = b->loc; bl; bl = bl->next) | |
5514 | bl->inserted = 1; | |
c2c6d25f JM |
5515 | } |
5516 | ||
53a5351d | 5517 | /* Call this routine when stepping and nexting to enable a breakpoint |
0fd8e87f | 5518 | if we do a longjmp() in THREAD. When we hit that breakpoint, call |
c906108c SS |
5519 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
5520 | ||
5521 | void | |
0fd8e87f | 5522 | set_longjmp_breakpoint (int thread) |
c906108c | 5523 | { |
0fd8e87f UW |
5524 | struct breakpoint *b, *temp; |
5525 | ||
5526 | /* To avoid having to rescan all objfile symbols at every step, | |
5527 | we maintain a list of continually-inserted but always disabled | |
5528 | longjmp "master" breakpoints. Here, we simply create momentary | |
5529 | clones of those and enable them for the requested thread. */ | |
5530 | ALL_BREAKPOINTS_SAFE (b, temp) | |
6c95b8df PA |
5531 | if (b->pspace == current_program_space |
5532 | && b->type == bp_longjmp_master) | |
0fd8e87f UW |
5533 | { |
5534 | struct breakpoint *clone = clone_momentary_breakpoint (b); | |
5535 | clone->type = bp_longjmp; | |
5536 | clone->thread = thread; | |
5537 | } | |
c906108c SS |
5538 | } |
5539 | ||
611c83ae | 5540 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 5541 | void |
611c83ae | 5542 | delete_longjmp_breakpoint (int thread) |
c906108c | 5543 | { |
611c83ae | 5544 | struct breakpoint *b, *temp; |
c906108c | 5545 | |
611c83ae PA |
5546 | ALL_BREAKPOINTS_SAFE (b, temp) |
5547 | if (b->type == bp_longjmp) | |
5548 | { | |
5549 | if (b->thread == thread) | |
5550 | delete_breakpoint (b); | |
5551 | } | |
c906108c SS |
5552 | } |
5553 | ||
1900040c MS |
5554 | void |
5555 | enable_overlay_breakpoints (void) | |
5556 | { | |
52f0bd74 | 5557 | struct breakpoint *b; |
1900040c MS |
5558 | |
5559 | ALL_BREAKPOINTS (b) | |
5560 | if (b->type == bp_overlay_event) | |
5561 | { | |
5562 | b->enable_state = bp_enabled; | |
b60e7edf | 5563 | update_global_location_list (1); |
c02f5703 | 5564 | overlay_events_enabled = 1; |
1900040c MS |
5565 | } |
5566 | } | |
5567 | ||
5568 | void | |
5569 | disable_overlay_breakpoints (void) | |
5570 | { | |
52f0bd74 | 5571 | struct breakpoint *b; |
1900040c MS |
5572 | |
5573 | ALL_BREAKPOINTS (b) | |
5574 | if (b->type == bp_overlay_event) | |
5575 | { | |
5576 | b->enable_state = bp_disabled; | |
b60e7edf | 5577 | update_global_location_list (0); |
c02f5703 | 5578 | overlay_events_enabled = 0; |
1900040c MS |
5579 | } |
5580 | } | |
5581 | ||
aa7d318d TT |
5582 | /* Set an active std::terminate breakpoint for each std::terminate |
5583 | master breakpoint. */ | |
5584 | void | |
5585 | set_std_terminate_breakpoint (void) | |
5586 | { | |
5587 | struct breakpoint *b, *temp; | |
5588 | ||
5589 | ALL_BREAKPOINTS_SAFE (b, temp) | |
5590 | if (b->pspace == current_program_space | |
5591 | && b->type == bp_std_terminate_master) | |
5592 | { | |
5593 | struct breakpoint *clone = clone_momentary_breakpoint (b); | |
5594 | clone->type = bp_std_terminate; | |
5595 | } | |
5596 | } | |
5597 | ||
5598 | /* Delete all the std::terminate breakpoints. */ | |
5599 | void | |
5600 | delete_std_terminate_breakpoint (void) | |
5601 | { | |
5602 | struct breakpoint *b, *temp; | |
5603 | ||
5604 | ALL_BREAKPOINTS_SAFE (b, temp) | |
5605 | if (b->type == bp_std_terminate) | |
5606 | delete_breakpoint (b); | |
5607 | } | |
5608 | ||
c4093a6a | 5609 | struct breakpoint * |
a6d9a66e | 5610 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
5611 | { |
5612 | struct breakpoint *b; | |
c4093a6a | 5613 | |
a6d9a66e | 5614 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event); |
c4093a6a | 5615 | |
b5de0fa7 | 5616 | b->enable_state = bp_enabled; |
c4093a6a | 5617 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5af949e3 UW |
5618 | b->addr_string |
5619 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
c4093a6a | 5620 | |
b60e7edf | 5621 | update_global_location_list_nothrow (1); |
74960c60 | 5622 | |
c4093a6a JM |
5623 | return b; |
5624 | } | |
5625 | ||
5626 | void | |
5627 | remove_thread_event_breakpoints (void) | |
5628 | { | |
5629 | struct breakpoint *b, *temp; | |
5630 | ||
5631 | ALL_BREAKPOINTS_SAFE (b, temp) | |
6c95b8df PA |
5632 | if (b->type == bp_thread_event |
5633 | && b->loc->pspace == current_program_space) | |
c4093a6a JM |
5634 | delete_breakpoint (b); |
5635 | } | |
5636 | ||
0101ce28 JJ |
5637 | struct captured_parse_breakpoint_args |
5638 | { | |
5639 | char **arg_p; | |
5640 | struct symtabs_and_lines *sals_p; | |
5641 | char ***addr_string_p; | |
5642 | int *not_found_ptr; | |
5643 | }; | |
5644 | ||
5645 | struct lang_and_radix | |
5646 | { | |
5647 | enum language lang; | |
5648 | int radix; | |
5649 | }; | |
5650 | ||
4efc6507 DE |
5651 | /* Create a breakpoint for JIT code registration and unregistration. */ |
5652 | ||
5653 | struct breakpoint * | |
5654 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
5655 | { | |
5656 | struct breakpoint *b; | |
5657 | ||
5658 | b = create_internal_breakpoint (gdbarch, address, bp_jit_event); | |
5659 | update_global_location_list_nothrow (1); | |
5660 | return b; | |
5661 | } | |
0101ce28 | 5662 | |
cae688ec JJ |
5663 | void |
5664 | remove_solib_event_breakpoints (void) | |
5665 | { | |
5666 | struct breakpoint *b, *temp; | |
5667 | ||
5668 | ALL_BREAKPOINTS_SAFE (b, temp) | |
6c95b8df PA |
5669 | if (b->type == bp_shlib_event |
5670 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
5671 | delete_breakpoint (b); |
5672 | } | |
5673 | ||
5674 | struct breakpoint * | |
a6d9a66e | 5675 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
cae688ec JJ |
5676 | { |
5677 | struct breakpoint *b; | |
5678 | ||
a6d9a66e | 5679 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event); |
b60e7edf | 5680 | update_global_location_list_nothrow (1); |
cae688ec JJ |
5681 | return b; |
5682 | } | |
5683 | ||
5684 | /* Disable any breakpoints that are on code in shared libraries. Only | |
5685 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
5686 | ||
5687 | void | |
cb851954 | 5688 | disable_breakpoints_in_shlibs (void) |
cae688ec | 5689 | { |
876fa593 | 5690 | struct bp_location *loc, **locp_tmp; |
cae688ec | 5691 | |
876fa593 | 5692 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 5693 | { |
0d381245 VP |
5694 | struct breakpoint *b = loc->owner; |
5695 | /* We apply the check to all breakpoints, including disabled | |
5696 | for those with loc->duplicate set. This is so that when breakpoint | |
5697 | becomes enabled, or the duplicate is removed, gdb will try to insert | |
5698 | all breakpoints. If we don't set shlib_disabled here, we'll try | |
5699 | to insert those breakpoints and fail. */ | |
1042e4c0 | 5700 | if (((b->type == bp_breakpoint) |
508ccb1f | 5701 | || (b->type == bp_jit_event) |
1042e4c0 | 5702 | || (b->type == bp_hardware_breakpoint) |
7a697b8d | 5703 | || (tracepoint_type (b))) |
6c95b8df | 5704 | && loc->pspace == current_program_space |
0d381245 | 5705 | && !loc->shlib_disabled |
a77053c2 | 5706 | #ifdef PC_SOLIB |
0d381245 | 5707 | && PC_SOLIB (loc->address) |
a77053c2 | 5708 | #else |
6c95b8df | 5709 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 MK |
5710 | #endif |
5711 | ) | |
0d381245 VP |
5712 | { |
5713 | loc->shlib_disabled = 1; | |
5714 | } | |
cae688ec JJ |
5715 | } |
5716 | } | |
5717 | ||
84acb35a JJ |
5718 | /* Disable any breakpoints that are in in an unloaded shared library. Only |
5719 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
5720 | ||
75149521 | 5721 | static void |
84acb35a JJ |
5722 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
5723 | { | |
876fa593 | 5724 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
5725 | int disabled_shlib_breaks = 0; |
5726 | ||
c86cf029 VP |
5727 | /* SunOS a.out shared libraries are always mapped, so do not |
5728 | disable breakpoints; they will only be reported as unloaded | |
5729 | through clear_solib when GDB discards its shared library | |
5730 | list. See clear_solib for more information. */ | |
5731 | if (exec_bfd != NULL | |
5732 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
5733 | return; | |
5734 | ||
876fa593 | 5735 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 5736 | { |
0d381245 VP |
5737 | struct breakpoint *b = loc->owner; |
5738 | if ((loc->loc_type == bp_loc_hardware_breakpoint | |
5739 | || loc->loc_type == bp_loc_software_breakpoint) | |
6c95b8df | 5740 | && solib->pspace == loc->pspace |
e2dd7057 | 5741 | && !loc->shlib_disabled |
508ccb1f TT |
5742 | && (b->type == bp_breakpoint |
5743 | || b->type == bp_jit_event | |
5744 | || b->type == bp_hardware_breakpoint) | |
e2dd7057 | 5745 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 5746 | { |
e2dd7057 PP |
5747 | loc->shlib_disabled = 1; |
5748 | /* At this point, we cannot rely on remove_breakpoint | |
5749 | succeeding so we must mark the breakpoint as not inserted | |
5750 | to prevent future errors occurring in remove_breakpoints. */ | |
5751 | loc->inserted = 0; | |
5752 | if (!disabled_shlib_breaks) | |
5753 | { | |
5754 | target_terminal_ours_for_output (); | |
5755 | warning (_("Temporarily disabling breakpoints for unloaded shared library \"%s\""), | |
5756 | solib->so_name); | |
84acb35a | 5757 | } |
e2dd7057 | 5758 | disabled_shlib_breaks = 1; |
84acb35a JJ |
5759 | } |
5760 | } | |
84acb35a JJ |
5761 | } |
5762 | ||
ce78b96d JB |
5763 | /* FORK & VFORK catchpoints. */ |
5764 | ||
5765 | /* Implement the "insert" breakpoint_ops method for fork catchpoints. */ | |
5766 | ||
c906108c | 5767 | static void |
ce78b96d JB |
5768 | insert_catch_fork (struct breakpoint *b) |
5769 | { | |
5770 | target_insert_fork_catchpoint (PIDGET (inferior_ptid)); | |
5771 | } | |
5772 | ||
5773 | /* Implement the "remove" breakpoint_ops method for fork catchpoints. */ | |
5774 | ||
5775 | static int | |
5776 | remove_catch_fork (struct breakpoint *b) | |
5777 | { | |
5778 | return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); | |
5779 | } | |
5780 | ||
5781 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
5782 | catchpoints. */ | |
5783 | ||
5784 | static int | |
5785 | breakpoint_hit_catch_fork (struct breakpoint *b) | |
5786 | { | |
5787 | return inferior_has_forked (inferior_ptid, &b->forked_inferior_pid); | |
5788 | } | |
5789 | ||
5790 | /* Implement the "print_it" breakpoint_ops method for fork catchpoints. */ | |
5791 | ||
5792 | static enum print_stop_action | |
5793 | print_it_catch_fork (struct breakpoint *b) | |
5794 | { | |
5795 | annotate_catchpoint (b->number); | |
5796 | printf_filtered (_("\nCatchpoint %d (forked process %d), "), | |
5797 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
5798 | return PRINT_SRC_AND_LOC; | |
5799 | } | |
5800 | ||
5801 | /* Implement the "print_one" breakpoint_ops method for fork catchpoints. */ | |
5802 | ||
5803 | static void | |
a6d9a66e | 5804 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 5805 | { |
79a45b7d TT |
5806 | struct value_print_options opts; |
5807 | ||
5808 | get_user_print_options (&opts); | |
5809 | ||
ce78b96d JB |
5810 | /* Field 4, the address, is omitted (which makes the columns |
5811 | not line up too nicely with the headers, but the effect | |
5812 | is relatively readable). */ | |
79a45b7d | 5813 | if (opts.addressprint) |
ce78b96d JB |
5814 | ui_out_field_skip (uiout, "addr"); |
5815 | annotate_field (5); | |
5816 | ui_out_text (uiout, "fork"); | |
5817 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
5818 | { | |
5819 | ui_out_text (uiout, ", process "); | |
5820 | ui_out_field_int (uiout, "what", | |
5821 | ptid_get_pid (b->forked_inferior_pid)); | |
5822 | ui_out_spaces (uiout, 1); | |
5823 | } | |
5824 | } | |
5825 | ||
5826 | /* Implement the "print_mention" breakpoint_ops method for fork | |
5827 | catchpoints. */ | |
5828 | ||
5829 | static void | |
5830 | print_mention_catch_fork (struct breakpoint *b) | |
5831 | { | |
5832 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
5833 | } | |
5834 | ||
5835 | /* The breakpoint_ops structure to be used in fork catchpoints. */ | |
5836 | ||
5837 | static struct breakpoint_ops catch_fork_breakpoint_ops = | |
5838 | { | |
5839 | insert_catch_fork, | |
5840 | remove_catch_fork, | |
5841 | breakpoint_hit_catch_fork, | |
5842 | print_it_catch_fork, | |
5843 | print_one_catch_fork, | |
5844 | print_mention_catch_fork | |
5845 | }; | |
5846 | ||
5847 | /* Implement the "insert" breakpoint_ops method for vfork catchpoints. */ | |
5848 | ||
5849 | static void | |
5850 | insert_catch_vfork (struct breakpoint *b) | |
5851 | { | |
5852 | target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); | |
5853 | } | |
5854 | ||
5855 | /* Implement the "remove" breakpoint_ops method for vfork catchpoints. */ | |
5856 | ||
5857 | static int | |
5858 | remove_catch_vfork (struct breakpoint *b) | |
5859 | { | |
5860 | return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); | |
5861 | } | |
5862 | ||
5863 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
5864 | catchpoints. */ | |
5865 | ||
5866 | static int | |
5867 | breakpoint_hit_catch_vfork (struct breakpoint *b) | |
5868 | { | |
5869 | return inferior_has_vforked (inferior_ptid, &b->forked_inferior_pid); | |
5870 | } | |
5871 | ||
5872 | /* Implement the "print_it" breakpoint_ops method for vfork catchpoints. */ | |
5873 | ||
5874 | static enum print_stop_action | |
5875 | print_it_catch_vfork (struct breakpoint *b) | |
5876 | { | |
5877 | annotate_catchpoint (b->number); | |
5878 | printf_filtered (_("\nCatchpoint %d (vforked process %d), "), | |
5879 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
5880 | return PRINT_SRC_AND_LOC; | |
5881 | } | |
5882 | ||
5883 | /* Implement the "print_one" breakpoint_ops method for vfork catchpoints. */ | |
5884 | ||
5885 | static void | |
a6d9a66e | 5886 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 5887 | { |
79a45b7d TT |
5888 | struct value_print_options opts; |
5889 | ||
5890 | get_user_print_options (&opts); | |
ce78b96d JB |
5891 | /* Field 4, the address, is omitted (which makes the columns |
5892 | not line up too nicely with the headers, but the effect | |
5893 | is relatively readable). */ | |
79a45b7d | 5894 | if (opts.addressprint) |
ce78b96d JB |
5895 | ui_out_field_skip (uiout, "addr"); |
5896 | annotate_field (5); | |
5897 | ui_out_text (uiout, "vfork"); | |
5898 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
5899 | { | |
5900 | ui_out_text (uiout, ", process "); | |
5901 | ui_out_field_int (uiout, "what", | |
5902 | ptid_get_pid (b->forked_inferior_pid)); | |
5903 | ui_out_spaces (uiout, 1); | |
5904 | } | |
5905 | } | |
5906 | ||
5907 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
5908 | catchpoints. */ | |
5909 | ||
5910 | static void | |
5911 | print_mention_catch_vfork (struct breakpoint *b) | |
5912 | { | |
5913 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
5914 | } | |
5915 | ||
5916 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ | |
5917 | ||
5918 | static struct breakpoint_ops catch_vfork_breakpoint_ops = | |
5919 | { | |
5920 | insert_catch_vfork, | |
5921 | remove_catch_vfork, | |
5922 | breakpoint_hit_catch_vfork, | |
5923 | print_it_catch_vfork, | |
5924 | print_one_catch_vfork, | |
5925 | print_mention_catch_vfork | |
5926 | }; | |
5927 | ||
a96d9b2e SDJ |
5928 | /* Implement the "insert" breakpoint_ops method for syscall |
5929 | catchpoints. */ | |
5930 | ||
5931 | static void | |
5932 | insert_catch_syscall (struct breakpoint *b) | |
5933 | { | |
5934 | struct inferior *inf = current_inferior (); | |
5935 | ||
5936 | ++inf->total_syscalls_count; | |
5937 | if (!b->syscalls_to_be_caught) | |
5938 | ++inf->any_syscall_count; | |
5939 | else | |
5940 | { | |
5941 | int i, iter; | |
5942 | for (i = 0; | |
5943 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
5944 | i++) | |
5945 | { | |
5946 | int elem; | |
5947 | if (iter >= VEC_length (int, inf->syscalls_counts)) | |
5948 | { | |
5949 | int old_size = VEC_length (int, inf->syscalls_counts); | |
5950 | uintptr_t vec_addr_offset = old_size * ((uintptr_t) sizeof (int)); | |
5951 | uintptr_t vec_addr; | |
5952 | VEC_safe_grow (int, inf->syscalls_counts, iter + 1); | |
5953 | vec_addr = (uintptr_t) VEC_address (int, inf->syscalls_counts) + | |
5954 | vec_addr_offset; | |
5955 | memset ((void *) vec_addr, 0, | |
5956 | (iter + 1 - old_size) * sizeof (int)); | |
5957 | } | |
5958 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
5959 | VEC_replace (int, inf->syscalls_counts, iter, ++elem); | |
5960 | } | |
5961 | } | |
5962 | ||
5963 | target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
5964 | inf->total_syscalls_count != 0, | |
5965 | inf->any_syscall_count, | |
5966 | VEC_length (int, inf->syscalls_counts), | |
5967 | VEC_address (int, inf->syscalls_counts)); | |
5968 | } | |
5969 | ||
5970 | /* Implement the "remove" breakpoint_ops method for syscall | |
5971 | catchpoints. */ | |
5972 | ||
5973 | static int | |
5974 | remove_catch_syscall (struct breakpoint *b) | |
5975 | { | |
5976 | struct inferior *inf = current_inferior (); | |
5977 | ||
5978 | --inf->total_syscalls_count; | |
5979 | if (!b->syscalls_to_be_caught) | |
5980 | --inf->any_syscall_count; | |
5981 | else | |
5982 | { | |
5983 | int i, iter; | |
5984 | for (i = 0; | |
5985 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
5986 | i++) | |
5987 | { | |
5988 | int elem; | |
5989 | if (iter >= VEC_length (int, inf->syscalls_counts)) | |
5990 | /* Shouldn't happen. */ | |
5991 | continue; | |
5992 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
5993 | VEC_replace (int, inf->syscalls_counts, iter, --elem); | |
5994 | } | |
5995 | } | |
5996 | ||
5997 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
5998 | inf->total_syscalls_count != 0, | |
5999 | inf->any_syscall_count, | |
6000 | VEC_length (int, inf->syscalls_counts), | |
6001 | VEC_address (int, inf->syscalls_counts)); | |
6002 | } | |
6003 | ||
6004 | /* Implement the "breakpoint_hit" breakpoint_ops method for syscall | |
6005 | catchpoints. */ | |
6006 | ||
6007 | static int | |
6008 | breakpoint_hit_catch_syscall (struct breakpoint *b) | |
6009 | { | |
6010 | /* We must check if we are catching specific syscalls in this breakpoint. | |
6011 | If we are, then we must guarantee that the called syscall is the same | |
6012 | syscall we are catching. */ | |
6013 | int syscall_number = 0; | |
6014 | ||
6015 | if (!inferior_has_called_syscall (inferior_ptid, &syscall_number)) | |
6016 | return 0; | |
6017 | ||
6018 | /* Now, checking if the syscall is the same. */ | |
6019 | if (b->syscalls_to_be_caught) | |
6020 | { | |
6021 | int i, iter; | |
6022 | for (i = 0; | |
6023 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6024 | i++) | |
6025 | if (syscall_number == iter) | |
6026 | break; | |
6027 | /* Not the same. */ | |
6028 | if (!iter) | |
6029 | return 0; | |
6030 | } | |
6031 | ||
6032 | return 1; | |
6033 | } | |
6034 | ||
6035 | /* Implement the "print_it" breakpoint_ops method for syscall | |
6036 | catchpoints. */ | |
6037 | ||
6038 | static enum print_stop_action | |
6039 | print_it_catch_syscall (struct breakpoint *b) | |
6040 | { | |
6041 | /* These are needed because we want to know in which state a | |
6042 | syscall is. It can be in the TARGET_WAITKIND_SYSCALL_ENTRY | |
6043 | or TARGET_WAITKIND_SYSCALL_RETURN, and depending on it we | |
6044 | must print "called syscall" or "returned from syscall". */ | |
6045 | ptid_t ptid; | |
6046 | struct target_waitstatus last; | |
6047 | struct syscall s; | |
6048 | struct cleanup *old_chain; | |
6049 | char *syscall_id; | |
6050 | ||
6051 | get_last_target_status (&ptid, &last); | |
6052 | ||
6053 | get_syscall_by_number (last.value.syscall_number, &s); | |
6054 | ||
6055 | annotate_catchpoint (b->number); | |
6056 | ||
6057 | if (s.name == NULL) | |
6058 | syscall_id = xstrprintf ("%d", last.value.syscall_number); | |
6059 | else | |
6060 | syscall_id = xstrprintf ("'%s'", s.name); | |
6061 | ||
6062 | old_chain = make_cleanup (xfree, syscall_id); | |
6063 | ||
6064 | if (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY) | |
6065 | printf_filtered (_("\nCatchpoint %d (call to syscall %s), "), | |
6066 | b->number, syscall_id); | |
6067 | else if (last.kind == TARGET_WAITKIND_SYSCALL_RETURN) | |
6068 | printf_filtered (_("\nCatchpoint %d (returned from syscall %s), "), | |
6069 | b->number, syscall_id); | |
6070 | ||
6071 | do_cleanups (old_chain); | |
6072 | ||
6073 | return PRINT_SRC_AND_LOC; | |
6074 | } | |
6075 | ||
6076 | /* Implement the "print_one" breakpoint_ops method for syscall | |
6077 | catchpoints. */ | |
6078 | ||
6079 | static void | |
6080 | print_one_catch_syscall (struct breakpoint *b, | |
6081 | struct bp_location **last_loc) | |
6082 | { | |
6083 | struct value_print_options opts; | |
6084 | ||
6085 | get_user_print_options (&opts); | |
6086 | /* Field 4, the address, is omitted (which makes the columns | |
6087 | not line up too nicely with the headers, but the effect | |
6088 | is relatively readable). */ | |
6089 | if (opts.addressprint) | |
6090 | ui_out_field_skip (uiout, "addr"); | |
6091 | annotate_field (5); | |
6092 | ||
6093 | if (b->syscalls_to_be_caught | |
6094 | && VEC_length (int, b->syscalls_to_be_caught) > 1) | |
6095 | ui_out_text (uiout, "syscalls \""); | |
6096 | else | |
6097 | ui_out_text (uiout, "syscall \""); | |
6098 | ||
6099 | if (b->syscalls_to_be_caught) | |
6100 | { | |
6101 | int i, iter; | |
6102 | char *text = xstrprintf ("%s", ""); | |
6103 | for (i = 0; | |
6104 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6105 | i++) | |
6106 | { | |
6107 | char *x = text; | |
6108 | struct syscall s; | |
6109 | get_syscall_by_number (iter, &s); | |
6110 | ||
6111 | if (s.name != NULL) | |
6112 | text = xstrprintf ("%s%s, ", text, s.name); | |
6113 | else | |
6114 | text = xstrprintf ("%s%d, ", text, iter); | |
6115 | ||
6116 | /* We have to xfree the last 'text' (now stored at 'x') | |
6117 | because xstrprintf dinamically allocates new space for it | |
6118 | on every call. */ | |
6119 | xfree (x); | |
6120 | } | |
6121 | /* Remove the last comma. */ | |
6122 | text[strlen (text) - 2] = '\0'; | |
6123 | ui_out_field_string (uiout, "what", text); | |
6124 | } | |
6125 | else | |
6126 | ui_out_field_string (uiout, "what", "<any syscall>"); | |
6127 | ui_out_text (uiout, "\" "); | |
6128 | } | |
6129 | ||
6130 | /* Implement the "print_mention" breakpoint_ops method for syscall | |
6131 | catchpoints. */ | |
6132 | ||
6133 | static void | |
6134 | print_mention_catch_syscall (struct breakpoint *b) | |
6135 | { | |
6136 | if (b->syscalls_to_be_caught) | |
6137 | { | |
6138 | int i, iter; | |
6139 | ||
6140 | if (VEC_length (int, b->syscalls_to_be_caught) > 1) | |
6141 | printf_filtered (_("Catchpoint %d (syscalls"), b->number); | |
6142 | else | |
6143 | printf_filtered (_("Catchpoint %d (syscall"), b->number); | |
6144 | ||
6145 | for (i = 0; | |
6146 | VEC_iterate (int, b->syscalls_to_be_caught, i, iter); | |
6147 | i++) | |
6148 | { | |
6149 | struct syscall s; | |
6150 | get_syscall_by_number (iter, &s); | |
6151 | ||
6152 | if (s.name) | |
6153 | printf_filtered (" '%s' [%d]", s.name, s.number); | |
6154 | else | |
6155 | printf_filtered (" %d", s.number); | |
6156 | } | |
6157 | printf_filtered (")"); | |
6158 | } | |
6159 | else | |
6160 | printf_filtered (_("Catchpoint %d (any syscall)"), | |
6161 | b->number); | |
6162 | } | |
6163 | ||
6164 | /* The breakpoint_ops structure to be used in syscall catchpoints. */ | |
6165 | ||
6166 | static struct breakpoint_ops catch_syscall_breakpoint_ops = | |
6167 | { | |
6168 | insert_catch_syscall, | |
6169 | remove_catch_syscall, | |
6170 | breakpoint_hit_catch_syscall, | |
6171 | print_it_catch_syscall, | |
6172 | print_one_catch_syscall, | |
6173 | print_mention_catch_syscall | |
6174 | }; | |
6175 | ||
6176 | /* Returns non-zero if 'b' is a syscall catchpoint. */ | |
6177 | ||
6178 | static int | |
6179 | syscall_catchpoint_p (struct breakpoint *b) | |
6180 | { | |
6181 | return (b->ops == &catch_syscall_breakpoint_ops); | |
6182 | } | |
6183 | ||
6184 | /* Create a new breakpoint of the bp_catchpoint kind and return it, | |
6185 | but does NOT mention it nor update the global location list. | |
6186 | This is useful if you need to fill more fields in the | |
6187 | struct breakpoint before calling mention. | |
ce78b96d JB |
6188 | |
6189 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
6190 | If COND_STRING is not NULL, then store it in the breakpoint. | |
6191 | OPS, if not NULL, is the breakpoint_ops structure associated | |
6192 | to the catchpoint. */ | |
6193 | ||
6194 | static struct breakpoint * | |
a96d9b2e SDJ |
6195 | create_catchpoint_without_mention (struct gdbarch *gdbarch, int tempflag, |
6196 | char *cond_string, | |
6197 | struct breakpoint_ops *ops) | |
c906108c | 6198 | { |
c5aa993b JM |
6199 | struct symtab_and_line sal; |
6200 | struct breakpoint *b; | |
c5aa993b | 6201 | |
fe39c653 | 6202 | init_sal (&sal); |
6c95b8df | 6203 | sal.pspace = current_program_space; |
c5aa993b | 6204 | |
a6d9a66e | 6205 | b = set_raw_breakpoint (gdbarch, sal, bp_catchpoint); |
c906108c SS |
6206 | set_breakpoint_count (breakpoint_count + 1); |
6207 | b->number = breakpoint_count; | |
ce78b96d | 6208 | |
1b36a34b | 6209 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
ce78b96d | 6210 | b->thread = -1; |
c906108c | 6211 | b->addr_string = NULL; |
b5de0fa7 EZ |
6212 | b->enable_state = bp_enabled; |
6213 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
ce78b96d | 6214 | b->ops = ops; |
c5aa993b | 6215 | |
a96d9b2e SDJ |
6216 | return b; |
6217 | } | |
6218 | ||
6219 | /* Create a new breakpoint of the bp_catchpoint kind and return it. | |
6220 | ||
6221 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
6222 | If COND_STRING is not NULL, then store it in the breakpoint. | |
6223 | OPS, if not NULL, is the breakpoint_ops structure associated | |
6224 | to the catchpoint. */ | |
6225 | ||
6226 | static struct breakpoint * | |
6227 | create_catchpoint (struct gdbarch *gdbarch, int tempflag, | |
6228 | char *cond_string, struct breakpoint_ops *ops) | |
6229 | { | |
6230 | struct breakpoint *b = | |
6231 | create_catchpoint_without_mention (gdbarch, tempflag, cond_string, ops); | |
6232 | ||
c906108c | 6233 | mention (b); |
ce78b96d | 6234 | update_global_location_list (1); |
c906108c | 6235 | |
ce78b96d | 6236 | return b; |
c906108c | 6237 | } |
c5aa993b | 6238 | |
9b70b993 | 6239 | static void |
a6d9a66e UW |
6240 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
6241 | int tempflag, char *cond_string, | |
ce78b96d | 6242 | struct breakpoint_ops *ops) |
c906108c | 6243 | { |
a6d9a66e UW |
6244 | struct breakpoint *b |
6245 | = create_catchpoint (gdbarch, tempflag, cond_string, ops); | |
ce78b96d JB |
6246 | |
6247 | /* FIXME: We should put this information in a breakpoint private data | |
6248 | area. */ | |
6249 | b->forked_inferior_pid = null_ptid; | |
c906108c SS |
6250 | } |
6251 | ||
fe798b75 JB |
6252 | /* Exec catchpoints. */ |
6253 | ||
9b70b993 | 6254 | static void |
fe798b75 | 6255 | insert_catch_exec (struct breakpoint *b) |
c906108c | 6256 | { |
fe798b75 JB |
6257 | target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
6258 | } | |
c906108c | 6259 | |
fe798b75 JB |
6260 | static int |
6261 | remove_catch_exec (struct breakpoint *b) | |
6262 | { | |
6263 | return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); | |
6264 | } | |
c906108c | 6265 | |
fe798b75 JB |
6266 | static int |
6267 | breakpoint_hit_catch_exec (struct breakpoint *b) | |
6268 | { | |
6269 | return inferior_has_execd (inferior_ptid, &b->exec_pathname); | |
6270 | } | |
c906108c | 6271 | |
fe798b75 JB |
6272 | static enum print_stop_action |
6273 | print_it_catch_exec (struct breakpoint *b) | |
6274 | { | |
6275 | annotate_catchpoint (b->number); | |
6276 | printf_filtered (_("\nCatchpoint %d (exec'd %s), "), b->number, | |
6277 | b->exec_pathname); | |
6278 | return PRINT_SRC_AND_LOC; | |
c906108c SS |
6279 | } |
6280 | ||
fe798b75 | 6281 | static void |
a6d9a66e | 6282 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 JB |
6283 | { |
6284 | struct value_print_options opts; | |
6285 | ||
6286 | get_user_print_options (&opts); | |
6287 | ||
6288 | /* Field 4, the address, is omitted (which makes the columns | |
6289 | not line up too nicely with the headers, but the effect | |
6290 | is relatively readable). */ | |
6291 | if (opts.addressprint) | |
6292 | ui_out_field_skip (uiout, "addr"); | |
6293 | annotate_field (5); | |
6294 | ui_out_text (uiout, "exec"); | |
6295 | if (b->exec_pathname != NULL) | |
6296 | { | |
6297 | ui_out_text (uiout, ", program \""); | |
6298 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
6299 | ui_out_text (uiout, "\" "); | |
6300 | } | |
6301 | } | |
6302 | ||
6303 | static void | |
6304 | print_mention_catch_exec (struct breakpoint *b) | |
6305 | { | |
6306 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
6307 | } | |
6308 | ||
6309 | static struct breakpoint_ops catch_exec_breakpoint_ops = | |
6310 | { | |
6311 | insert_catch_exec, | |
6312 | remove_catch_exec, | |
6313 | breakpoint_hit_catch_exec, | |
6314 | print_it_catch_exec, | |
6315 | print_one_catch_exec, | |
6316 | print_mention_catch_exec | |
6317 | }; | |
6318 | ||
a96d9b2e SDJ |
6319 | static void |
6320 | create_syscall_event_catchpoint (int tempflag, VEC(int) *filter, | |
6321 | struct breakpoint_ops *ops) | |
6322 | { | |
6323 | struct gdbarch *gdbarch = get_current_arch (); | |
6324 | struct breakpoint *b = | |
6325 | create_catchpoint_without_mention (gdbarch, tempflag, NULL, ops); | |
6326 | ||
6327 | b->syscalls_to_be_caught = filter; | |
6328 | ||
6329 | /* Now, we have to mention the breakpoint and update the global | |
6330 | location list. */ | |
6331 | mention (b); | |
6332 | update_global_location_list (1); | |
6333 | } | |
6334 | ||
c906108c | 6335 | static int |
fba45db2 | 6336 | hw_breakpoint_used_count (void) |
c906108c | 6337 | { |
52f0bd74 | 6338 | struct breakpoint *b; |
c906108c SS |
6339 | int i = 0; |
6340 | ||
6341 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6342 | { |
d6b74ac4 | 6343 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
c5aa993b JM |
6344 | i++; |
6345 | } | |
c906108c SS |
6346 | |
6347 | return i; | |
6348 | } | |
6349 | ||
6350 | static int | |
fba45db2 | 6351 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 6352 | { |
52f0bd74 | 6353 | struct breakpoint *b; |
c906108c SS |
6354 | int i = 0; |
6355 | ||
6356 | *other_type_used = 0; | |
6357 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6358 | { |
468d015d | 6359 | if (breakpoint_enabled (b)) |
c5aa993b JM |
6360 | { |
6361 | if (b->type == type) | |
6362 | i++; | |
059fb39f PM |
6363 | else if ((b->type == bp_hardware_watchpoint |
6364 | || b->type == bp_read_watchpoint | |
6365 | || b->type == bp_access_watchpoint)) | |
c5aa993b JM |
6366 | *other_type_used = 1; |
6367 | } | |
6368 | } | |
c906108c SS |
6369 | return i; |
6370 | } | |
6371 | ||
c906108c | 6372 | void |
fba45db2 | 6373 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 6374 | { |
c5aa993b | 6375 | struct breakpoint *b; |
c906108c SS |
6376 | |
6377 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
6378 | { |
6379 | if (((b->type == bp_watchpoint) | |
6380 | || (b->type == bp_hardware_watchpoint) | |
6381 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 6382 | || (b->type == bp_access_watchpoint)) |
468d015d | 6383 | && breakpoint_enabled (b)) |
c5aa993b | 6384 | { |
b5de0fa7 | 6385 | b->enable_state = bp_call_disabled; |
b60e7edf | 6386 | update_global_location_list (0); |
c5aa993b JM |
6387 | } |
6388 | } | |
c906108c SS |
6389 | } |
6390 | ||
6391 | void | |
fba45db2 | 6392 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 6393 | { |
c5aa993b | 6394 | struct breakpoint *b; |
c906108c SS |
6395 | |
6396 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
6397 | { |
6398 | if (((b->type == bp_watchpoint) | |
6399 | || (b->type == bp_hardware_watchpoint) | |
6400 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 6401 | || (b->type == bp_access_watchpoint)) |
b5de0fa7 | 6402 | && (b->enable_state == bp_call_disabled)) |
c5aa993b | 6403 | { |
b5de0fa7 | 6404 | b->enable_state = bp_enabled; |
b60e7edf | 6405 | update_global_location_list (1); |
c5aa993b JM |
6406 | } |
6407 | } | |
c906108c SS |
6408 | } |
6409 | ||
8bea4e01 UW |
6410 | void |
6411 | disable_breakpoints_before_startup (void) | |
6412 | { | |
6413 | struct breakpoint *b; | |
6414 | int found = 0; | |
6415 | ||
6416 | ALL_BREAKPOINTS (b) | |
6417 | { | |
6c95b8df PA |
6418 | if (b->pspace != current_program_space) |
6419 | continue; | |
6420 | ||
8bea4e01 UW |
6421 | if ((b->type == bp_breakpoint |
6422 | || b->type == bp_hardware_breakpoint) | |
6423 | && breakpoint_enabled (b)) | |
6424 | { | |
6425 | b->enable_state = bp_startup_disabled; | |
6426 | found = 1; | |
6427 | } | |
6428 | } | |
6429 | ||
6430 | if (found) | |
6431 | update_global_location_list (0); | |
6432 | ||
6c95b8df | 6433 | current_program_space->executing_startup = 1; |
8bea4e01 UW |
6434 | } |
6435 | ||
6436 | void | |
6437 | enable_breakpoints_after_startup (void) | |
6438 | { | |
6439 | struct breakpoint *b; | |
6440 | int found = 0; | |
6441 | ||
6c95b8df | 6442 | current_program_space->executing_startup = 0; |
8bea4e01 UW |
6443 | |
6444 | ALL_BREAKPOINTS (b) | |
6445 | { | |
6c95b8df PA |
6446 | if (b->pspace != current_program_space) |
6447 | continue; | |
6448 | ||
8bea4e01 UW |
6449 | if ((b->type == bp_breakpoint |
6450 | || b->type == bp_hardware_breakpoint) | |
6451 | && b->enable_state == bp_startup_disabled) | |
6452 | { | |
6453 | b->enable_state = bp_enabled; | |
6454 | found = 1; | |
6455 | } | |
6456 | } | |
6457 | ||
6458 | if (found) | |
6459 | breakpoint_re_set (); | |
6460 | } | |
6461 | ||
c906108c SS |
6462 | |
6463 | /* Set a breakpoint that will evaporate an end of command | |
6464 | at address specified by SAL. | |
6465 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
6466 | ||
6467 | struct breakpoint * | |
a6d9a66e UW |
6468 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
6469 | struct frame_id frame_id, enum bptype type) | |
c906108c | 6470 | { |
52f0bd74 | 6471 | struct breakpoint *b; |
edb3359d DJ |
6472 | |
6473 | /* If FRAME_ID is valid, it should be a real frame, not an inlined | |
6474 | one. */ | |
6475 | gdb_assert (!frame_id_inlined_p (frame_id)); | |
6476 | ||
a6d9a66e | 6477 | b = set_raw_breakpoint (gdbarch, sal, type); |
b5de0fa7 EZ |
6478 | b->enable_state = bp_enabled; |
6479 | b->disposition = disp_donttouch; | |
818dd999 | 6480 | b->frame_id = frame_id; |
c906108c SS |
6481 | |
6482 | /* If we're debugging a multi-threaded program, then we | |
6483 | want momentary breakpoints to be active in only a | |
6484 | single thread of control. */ | |
39f77062 KB |
6485 | if (in_thread_list (inferior_ptid)) |
6486 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 6487 | |
b60e7edf | 6488 | update_global_location_list_nothrow (1); |
74960c60 | 6489 | |
c906108c SS |
6490 | return b; |
6491 | } | |
611c83ae | 6492 | |
e58b0e63 PA |
6493 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
6494 | ORIG is NULL. */ | |
6495 | ||
6496 | struct breakpoint * | |
6497 | clone_momentary_breakpoint (struct breakpoint *orig) | |
6498 | { | |
6499 | struct breakpoint *copy; | |
6500 | ||
6501 | /* If there's nothing to clone, then return nothing. */ | |
6502 | if (orig == NULL) | |
6503 | return NULL; | |
6504 | ||
a6d9a66e | 6505 | copy = set_raw_breakpoint_without_location (orig->gdbarch, orig->type); |
e58b0e63 PA |
6506 | copy->loc = allocate_bp_location (copy); |
6507 | set_breakpoint_location_function (copy->loc); | |
6508 | ||
a6d9a66e | 6509 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
6510 | copy->loc->requested_address = orig->loc->requested_address; |
6511 | copy->loc->address = orig->loc->address; | |
6512 | copy->loc->section = orig->loc->section; | |
6c95b8df | 6513 | copy->loc->pspace = orig->loc->pspace; |
e58b0e63 PA |
6514 | |
6515 | if (orig->source_file == NULL) | |
6516 | copy->source_file = NULL; | |
6517 | else | |
6518 | copy->source_file = xstrdup (orig->source_file); | |
6519 | ||
6520 | copy->line_number = orig->line_number; | |
6521 | copy->frame_id = orig->frame_id; | |
6522 | copy->thread = orig->thread; | |
6c95b8df | 6523 | copy->pspace = orig->pspace; |
e58b0e63 PA |
6524 | |
6525 | copy->enable_state = bp_enabled; | |
6526 | copy->disposition = disp_donttouch; | |
6527 | copy->number = internal_breakpoint_number--; | |
6528 | ||
6529 | update_global_location_list_nothrow (0); | |
6530 | return copy; | |
6531 | } | |
6532 | ||
611c83ae | 6533 | struct breakpoint * |
a6d9a66e UW |
6534 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
6535 | enum bptype type) | |
611c83ae PA |
6536 | { |
6537 | struct symtab_and_line sal; | |
6538 | ||
6539 | sal = find_pc_line (pc, 0); | |
6540 | sal.pc = pc; | |
6541 | sal.section = find_pc_overlay (pc); | |
6542 | sal.explicit_pc = 1; | |
6543 | ||
a6d9a66e | 6544 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 6545 | } |
c906108c | 6546 | \f |
c5aa993b | 6547 | |
c906108c SS |
6548 | /* Tell the user we have just set a breakpoint B. */ |
6549 | ||
6550 | static void | |
fba45db2 | 6551 | mention (struct breakpoint *b) |
c906108c SS |
6552 | { |
6553 | int say_where = 0; | |
fa8a61dc | 6554 | struct cleanup *ui_out_chain; |
79a45b7d TT |
6555 | struct value_print_options opts; |
6556 | ||
6557 | get_user_print_options (&opts); | |
8b93c638 | 6558 | |
9a4105ab AC |
6559 | /* FIXME: This is misplaced; mention() is called by things (like |
6560 | hitting a watchpoint) other than breakpoint creation. It should | |
6561 | be possible to clean this up and at the same time replace the | |
7f4b89d1 | 6562 | random calls to breakpoint_changed with this hook. */ |
383f836e | 6563 | observer_notify_breakpoint_created (b->number); |
c906108c | 6564 | |
3086aeae DJ |
6565 | if (b->ops != NULL && b->ops->print_mention != NULL) |
6566 | b->ops->print_mention (b); | |
6567 | else | |
6568 | switch (b->type) | |
6569 | { | |
6570 | case bp_none: | |
a3f17187 | 6571 | printf_filtered (_("(apparently deleted?) Eventpoint %d: "), b->number); |
3086aeae DJ |
6572 | break; |
6573 | case bp_watchpoint: | |
6574 | ui_out_text (uiout, "Watchpoint "); | |
6575 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
6576 | ui_out_field_int (uiout, "number", b->number); | |
6577 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6578 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6579 | do_cleanups (ui_out_chain); |
6580 | break; | |
6581 | case bp_hardware_watchpoint: | |
6582 | ui_out_text (uiout, "Hardware watchpoint "); | |
6583 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
6584 | ui_out_field_int (uiout, "number", b->number); | |
6585 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6586 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6587 | do_cleanups (ui_out_chain); |
6588 | break; | |
6589 | case bp_read_watchpoint: | |
6590 | ui_out_text (uiout, "Hardware read watchpoint "); | |
6591 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
6592 | ui_out_field_int (uiout, "number", b->number); | |
6593 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6594 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6595 | do_cleanups (ui_out_chain); |
6596 | break; | |
6597 | case bp_access_watchpoint: | |
6598 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
6599 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
6600 | ui_out_field_int (uiout, "number", b->number); | |
6601 | ui_out_text (uiout, ": "); | |
fa8a61dc | 6602 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
6603 | do_cleanups (ui_out_chain); |
6604 | break; | |
6605 | case bp_breakpoint: | |
6606 | if (ui_out_is_mi_like_p (uiout)) | |
6607 | { | |
6608 | say_where = 0; | |
6609 | break; | |
6610 | } | |
2cec12e5 AR |
6611 | if (b->disposition == disp_del) |
6612 | printf_filtered (_("Temporary breakpoint")); | |
6613 | else | |
6614 | printf_filtered (_("Breakpoint")); | |
6615 | printf_filtered (_(" %d"), b->number); | |
3086aeae DJ |
6616 | say_where = 1; |
6617 | break; | |
6618 | case bp_hardware_breakpoint: | |
6619 | if (ui_out_is_mi_like_p (uiout)) | |
6620 | { | |
6621 | say_where = 0; | |
6622 | break; | |
6623 | } | |
a3f17187 | 6624 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); |
3086aeae DJ |
6625 | say_where = 1; |
6626 | break; | |
1042e4c0 SS |
6627 | case bp_tracepoint: |
6628 | if (ui_out_is_mi_like_p (uiout)) | |
6629 | { | |
6630 | say_where = 0; | |
6631 | break; | |
6632 | } | |
6633 | printf_filtered (_("Tracepoint")); | |
6634 | printf_filtered (_(" %d"), b->number); | |
6635 | say_where = 1; | |
6636 | break; | |
7a697b8d SS |
6637 | case bp_fast_tracepoint: |
6638 | if (ui_out_is_mi_like_p (uiout)) | |
6639 | { | |
6640 | say_where = 0; | |
6641 | break; | |
6642 | } | |
6643 | printf_filtered (_("Fast tracepoint")); | |
6644 | printf_filtered (_(" %d"), b->number); | |
6645 | say_where = 1; | |
6646 | break; | |
3086aeae DJ |
6647 | |
6648 | case bp_until: | |
6649 | case bp_finish: | |
6650 | case bp_longjmp: | |
6651 | case bp_longjmp_resume: | |
6652 | case bp_step_resume: | |
3086aeae | 6653 | case bp_call_dummy: |
aa7d318d | 6654 | case bp_std_terminate: |
3086aeae DJ |
6655 | case bp_watchpoint_scope: |
6656 | case bp_shlib_event: | |
6657 | case bp_thread_event: | |
6658 | case bp_overlay_event: | |
4efc6507 | 6659 | case bp_jit_event: |
0fd8e87f | 6660 | case bp_longjmp_master: |
aa7d318d | 6661 | case bp_std_terminate_master: |
3086aeae DJ |
6662 | break; |
6663 | } | |
c906108c | 6664 | |
c906108c SS |
6665 | if (say_where) |
6666 | { | |
a3f17187 AC |
6667 | /* i18n: cagney/2005-02-11: Below needs to be merged into a |
6668 | single string. */ | |
0d381245 | 6669 | if (b->loc == NULL) |
c906108c | 6670 | { |
a3f17187 | 6671 | printf_filtered (_(" (%s) pending."), b->addr_string); |
0101ce28 JJ |
6672 | } |
6673 | else | |
6674 | { | |
79a45b7d | 6675 | if (opts.addressprint || b->source_file == NULL) |
0101ce28 JJ |
6676 | { |
6677 | printf_filtered (" at "); | |
5af949e3 UW |
6678 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), |
6679 | gdb_stdout); | |
0101ce28 JJ |
6680 | } |
6681 | if (b->source_file) | |
6682 | printf_filtered (": file %s, line %d.", | |
6683 | b->source_file, b->line_number); | |
0d381245 VP |
6684 | |
6685 | if (b->loc->next) | |
6686 | { | |
6687 | struct bp_location *loc = b->loc; | |
6688 | int n = 0; | |
6689 | for (; loc; loc = loc->next) | |
6690 | ++n; | |
6691 | printf_filtered (" (%d locations)", n); | |
6692 | } | |
6693 | ||
c906108c | 6694 | } |
c906108c | 6695 | } |
9dc5e2a9 | 6696 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 6697 | return; |
c906108c SS |
6698 | printf_filtered ("\n"); |
6699 | } | |
c906108c | 6700 | \f |
c5aa993b | 6701 | |
0d381245 | 6702 | static struct bp_location * |
39d61571 | 6703 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
6704 | const struct symtab_and_line *sal) |
6705 | { | |
6706 | struct bp_location *loc, **tmp; | |
6707 | ||
39d61571 | 6708 | loc = allocate_bp_location (b); |
0d381245 VP |
6709 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
6710 | ; | |
6711 | *tmp = loc; | |
a6d9a66e UW |
6712 | loc->gdbarch = get_sal_arch (*sal); |
6713 | if (!loc->gdbarch) | |
6714 | loc->gdbarch = b->gdbarch; | |
0d381245 | 6715 | loc->requested_address = sal->pc; |
a6d9a66e UW |
6716 | loc->address = adjust_breakpoint_address (loc->gdbarch, |
6717 | loc->requested_address, b->type); | |
6c95b8df PA |
6718 | loc->pspace = sal->pspace; |
6719 | gdb_assert (loc->pspace != NULL); | |
0d381245 VP |
6720 | loc->section = sal->section; |
6721 | ||
6722 | set_breakpoint_location_function (loc); | |
6723 | return loc; | |
6724 | } | |
514f746b AR |
6725 | \f |
6726 | ||
6727 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
6728 | return 0 otherwise. */ | |
6729 | ||
6730 | static int | |
6731 | bp_loc_is_permanent (struct bp_location *loc) | |
6732 | { | |
6733 | int len; | |
6734 | CORE_ADDR addr; | |
6735 | const gdb_byte *brk; | |
6736 | gdb_byte *target_mem; | |
939c61fa JK |
6737 | struct cleanup *cleanup; |
6738 | int retval = 0; | |
514f746b AR |
6739 | |
6740 | gdb_assert (loc != NULL); | |
6741 | ||
6742 | addr = loc->address; | |
a6d9a66e | 6743 | brk = gdbarch_breakpoint_from_pc (loc->gdbarch, &addr, &len); |
514f746b | 6744 | |
939c61fa JK |
6745 | /* Software breakpoints unsupported? */ |
6746 | if (brk == NULL) | |
6747 | return 0; | |
6748 | ||
514f746b AR |
6749 | target_mem = alloca (len); |
6750 | ||
939c61fa JK |
6751 | /* Enable the automatic memory restoration from breakpoints while |
6752 | we read the memory. Otherwise we could say about our temporary | |
6753 | breakpoints they are permanent. */ | |
6c95b8df PA |
6754 | cleanup = save_current_space_and_thread (); |
6755 | ||
6756 | switch_to_program_space_and_thread (loc->pspace); | |
6757 | make_show_memory_breakpoints_cleanup (0); | |
939c61fa | 6758 | |
514f746b AR |
6759 | if (target_read_memory (loc->address, target_mem, len) == 0 |
6760 | && memcmp (target_mem, brk, len) == 0) | |
939c61fa | 6761 | retval = 1; |
514f746b | 6762 | |
939c61fa JK |
6763 | do_cleanups (cleanup); |
6764 | ||
6765 | return retval; | |
514f746b AR |
6766 | } |
6767 | ||
6768 | ||
c3f6f71d | 6769 | |
018d34a4 VP |
6770 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
6771 | as textual description of the location, and COND_STRING | |
db107f19 | 6772 | as condition expression. */ |
018d34a4 VP |
6773 | |
6774 | static void | |
8cdf0e15 VP |
6775 | create_breakpoint_sal (struct gdbarch *gdbarch, |
6776 | struct symtabs_and_lines sals, char *addr_string, | |
6777 | char *cond_string, | |
6778 | enum bptype type, enum bpdisp disposition, | |
6779 | int thread, int task, int ignore_count, | |
6780 | struct breakpoint_ops *ops, int from_tty, int enabled) | |
018d34a4 | 6781 | { |
0d381245 VP |
6782 | struct breakpoint *b = NULL; |
6783 | int i; | |
018d34a4 VP |
6784 | |
6785 | if (type == bp_hardware_breakpoint) | |
6786 | { | |
6787 | int i = hw_breakpoint_used_count (); | |
6788 | int target_resources_ok = | |
d92524f1 | 6789 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
018d34a4 VP |
6790 | i + 1, 0); |
6791 | if (target_resources_ok == 0) | |
6792 | error (_("No hardware breakpoint support in the target.")); | |
6793 | else if (target_resources_ok < 0) | |
6794 | error (_("Hardware breakpoints used exceeds limit.")); | |
6795 | } | |
6796 | ||
6c95b8df PA |
6797 | gdb_assert (sals.nelts > 0); |
6798 | ||
0d381245 VP |
6799 | for (i = 0; i < sals.nelts; ++i) |
6800 | { | |
6801 | struct symtab_and_line sal = sals.sals[i]; | |
6802 | struct bp_location *loc; | |
6803 | ||
6804 | if (from_tty) | |
5af949e3 UW |
6805 | { |
6806 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
6807 | if (!loc_gdbarch) | |
6808 | loc_gdbarch = gdbarch; | |
6809 | ||
6810 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 6811 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 6812 | } |
0d381245 VP |
6813 | |
6814 | if (i == 0) | |
6815 | { | |
a6d9a66e | 6816 | b = set_raw_breakpoint (gdbarch, sal, type); |
0d381245 VP |
6817 | set_breakpoint_count (breakpoint_count + 1); |
6818 | b->number = breakpoint_count; | |
6819 | b->thread = thread; | |
4a306c9a | 6820 | b->task = task; |
018d34a4 | 6821 | |
0d381245 VP |
6822 | b->cond_string = cond_string; |
6823 | b->ignore_count = ignore_count; | |
41447f92 | 6824 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 6825 | b->disposition = disposition; |
018d34a4 | 6826 | |
6c95b8df PA |
6827 | b->pspace = sals.sals[0].pspace; |
6828 | ||
6829 | if (enabled && b->pspace->executing_startup | |
8bea4e01 UW |
6830 | && (b->type == bp_breakpoint |
6831 | || b->type == bp_hardware_breakpoint)) | |
6832 | b->enable_state = bp_startup_disabled; | |
6833 | ||
0d381245 VP |
6834 | loc = b->loc; |
6835 | } | |
6836 | else | |
018d34a4 | 6837 | { |
39d61571 | 6838 | loc = add_location_to_breakpoint (b, &sal); |
0d381245 VP |
6839 | } |
6840 | ||
514f746b AR |
6841 | if (bp_loc_is_permanent (loc)) |
6842 | make_breakpoint_permanent (b); | |
6843 | ||
0d381245 VP |
6844 | if (b->cond_string) |
6845 | { | |
6846 | char *arg = b->cond_string; | |
d32a6982 | 6847 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); |
0d381245 | 6848 | if (*arg) |
db107f19 | 6849 | error (_("Garbage %s follows condition"), arg); |
018d34a4 | 6850 | } |
0d381245 | 6851 | } |
018d34a4 VP |
6852 | |
6853 | if (addr_string) | |
6854 | b->addr_string = addr_string; | |
6855 | else | |
6856 | /* addr_string has to be used or breakpoint_re_set will delete | |
6857 | me. */ | |
5af949e3 UW |
6858 | b->addr_string |
6859 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
018d34a4 | 6860 | |
604133b5 | 6861 | b->ops = ops; |
018d34a4 VP |
6862 | mention (b); |
6863 | } | |
6864 | ||
ed0616c6 VP |
6865 | /* Remove element at INDEX_TO_REMOVE from SAL, shifting other |
6866 | elements to fill the void space. */ | |
2c0b251b PA |
6867 | static void |
6868 | remove_sal (struct symtabs_and_lines *sal, int index_to_remove) | |
ed0616c6 VP |
6869 | { |
6870 | int i = index_to_remove+1; | |
6871 | int last_index = sal->nelts-1; | |
6872 | ||
6873 | for (;i <= last_index; ++i) | |
6874 | sal->sals[i-1] = sal->sals[i]; | |
6875 | ||
6876 | --(sal->nelts); | |
6877 | } | |
6878 | ||
6c95b8df PA |
6879 | /* If appropriate, obtains all sals that correspond to the same file |
6880 | and line as SAL, in all program spaces. Users debugging with IDEs, | |
6881 | will want to set a breakpoint at foo.c:line, and not really care | |
6882 | about program spaces. This is done only if SAL does not have | |
6883 | explicit PC and has line and file information. If we got just a | |
6884 | single expanded sal, return the original. | |
ed0616c6 | 6885 | |
6c95b8df PA |
6886 | Otherwise, if SAL.explicit_line is not set, filter out all sals for |
6887 | which the name of enclosing function is different from SAL. This | |
6888 | makes sure that if we have breakpoint originally set in template | |
6889 | instantiation, say foo<int>(), we won't expand SAL to locations at | |
6890 | the same line in all existing instantiations of 'foo'. */ | |
ed0616c6 | 6891 | |
2c0b251b | 6892 | static struct symtabs_and_lines |
ed0616c6 VP |
6893 | expand_line_sal_maybe (struct symtab_and_line sal) |
6894 | { | |
6895 | struct symtabs_and_lines expanded; | |
6896 | CORE_ADDR original_pc = sal.pc; | |
6897 | char *original_function = NULL; | |
6898 | int found; | |
6899 | int i; | |
6c95b8df | 6900 | struct cleanup *old_chain; |
ed0616c6 VP |
6901 | |
6902 | /* If we have explicit pc, don't expand. | |
6903 | If we have no line number, we can't expand. */ | |
6904 | if (sal.explicit_pc || sal.line == 0 || sal.symtab == NULL) | |
6905 | { | |
6906 | expanded.nelts = 1; | |
6907 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
6908 | expanded.sals[0] = sal; | |
6909 | return expanded; | |
6910 | } | |
6911 | ||
6912 | sal.pc = 0; | |
6c95b8df PA |
6913 | |
6914 | old_chain = save_current_space_and_thread (); | |
6915 | ||
6916 | switch_to_program_space_and_thread (sal.pspace); | |
6917 | ||
ed0616c6 | 6918 | find_pc_partial_function (original_pc, &original_function, NULL, NULL); |
6c95b8df PA |
6919 | |
6920 | /* Note that expand_line_sal visits *all* program spaces. */ | |
ed0616c6 | 6921 | expanded = expand_line_sal (sal); |
6c95b8df | 6922 | |
ed0616c6 VP |
6923 | if (expanded.nelts == 1) |
6924 | { | |
3dba1c98 JB |
6925 | /* We had one sal, we got one sal. Return that sal, adjusting it |
6926 | past the function prologue if necessary. */ | |
ed0616c6 VP |
6927 | xfree (expanded.sals); |
6928 | expanded.nelts = 1; | |
6929 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
6930 | sal.pc = original_pc; | |
6931 | expanded.sals[0] = sal; | |
3dba1c98 | 6932 | skip_prologue_sal (&expanded.sals[0]); |
6c95b8df | 6933 | do_cleanups (old_chain); |
ed0616c6 VP |
6934 | return expanded; |
6935 | } | |
6936 | ||
6937 | if (!sal.explicit_line) | |
6938 | { | |
6939 | CORE_ADDR func_addr, func_end; | |
6940 | for (i = 0; i < expanded.nelts; ++i) | |
6941 | { | |
6942 | CORE_ADDR pc = expanded.sals[i].pc; | |
6943 | char *this_function; | |
6c95b8df PA |
6944 | |
6945 | /* We need to switch threads as well since we're about to | |
6946 | read memory. */ | |
6947 | switch_to_program_space_and_thread (expanded.sals[i].pspace); | |
6948 | ||
ed0616c6 VP |
6949 | if (find_pc_partial_function (pc, &this_function, |
6950 | &func_addr, &func_end)) | |
6951 | { | |
059fb39f PM |
6952 | if (this_function |
6953 | && strcmp (this_function, original_function) != 0) | |
ed0616c6 VP |
6954 | { |
6955 | remove_sal (&expanded, i); | |
6956 | --i; | |
6957 | } | |
ed0616c6 VP |
6958 | } |
6959 | } | |
6960 | } | |
059acae7 UW |
6961 | |
6962 | /* Skip the function prologue if necessary. */ | |
6963 | for (i = 0; i < expanded.nelts; ++i) | |
6964 | skip_prologue_sal (&expanded.sals[i]); | |
ed0616c6 | 6965 | |
6c95b8df PA |
6966 | do_cleanups (old_chain); |
6967 | ||
ed0616c6 VP |
6968 | if (expanded.nelts <= 1) |
6969 | { | |
6970 | /* This is un ugly workaround. If we get zero | |
6971 | expanded sals then something is really wrong. | |
6972 | Fix that by returnign the original sal. */ | |
6973 | xfree (expanded.sals); | |
6974 | expanded.nelts = 1; | |
6975 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
6976 | sal.pc = original_pc; | |
6977 | expanded.sals[0] = sal; | |
6978 | return expanded; | |
6979 | } | |
6980 | ||
6981 | if (original_pc) | |
6982 | { | |
6983 | found = 0; | |
6984 | for (i = 0; i < expanded.nelts; ++i) | |
6985 | if (expanded.sals[i].pc == original_pc) | |
6986 | { | |
6987 | found = 1; | |
6988 | break; | |
6989 | } | |
6990 | gdb_assert (found); | |
6991 | } | |
6992 | ||
6993 | return expanded; | |
6994 | } | |
6995 | ||
018d34a4 VP |
6996 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
6997 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
6998 | value. COND_STRING, if not NULL, specified the condition to be | |
6999 | used for all breakpoints. Essentially the only case where | |
7000 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
7001 | function. In that case, it's still not possible to specify | |
7002 | separate conditions for different overloaded functions, so | |
7003 | we take just a single condition string. | |
7004 | ||
c3f6f71d | 7005 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 7006 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
7007 | array contents). If the function fails (error() is called), the |
7008 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
7009 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
7010 | |
7011 | static void | |
8cdf0e15 VP |
7012 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7013 | struct symtabs_and_lines sals, char **addr_string, | |
7014 | char *cond_string, | |
7015 | enum bptype type, enum bpdisp disposition, | |
7016 | int thread, int task, int ignore_count, | |
7017 | struct breakpoint_ops *ops, int from_tty, | |
7018 | int enabled) | |
c906108c | 7019 | { |
018d34a4 VP |
7020 | int i; |
7021 | for (i = 0; i < sals.nelts; ++i) | |
c3f6f71d | 7022 | { |
ed0616c6 VP |
7023 | struct symtabs_and_lines expanded = |
7024 | expand_line_sal_maybe (sals.sals[i]); | |
0d381245 | 7025 | |
8cdf0e15 VP |
7026 | create_breakpoint_sal (gdbarch, expanded, addr_string[i], |
7027 | cond_string, type, disposition, | |
7028 | thread, task, ignore_count, ops, from_tty, enabled); | |
c3f6f71d | 7029 | } |
c3f6f71d | 7030 | } |
c906108c | 7031 | |
c3f6f71d JM |
7032 | /* Parse ARG which is assumed to be a SAL specification possibly |
7033 | followed by conditionals. On return, SALS contains an array of SAL | |
7034 | addresses found. ADDR_STRING contains a vector of (canonical) | |
7035 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 7036 | |
b9362cc7 | 7037 | static void |
c3f6f71d JM |
7038 | parse_breakpoint_sals (char **address, |
7039 | struct symtabs_and_lines *sals, | |
0101ce28 JJ |
7040 | char ***addr_string, |
7041 | int *not_found_ptr) | |
c3f6f71d JM |
7042 | { |
7043 | char *addr_start = *address; | |
7044 | *addr_string = NULL; | |
7045 | /* If no arg given, or if first arg is 'if ', use the default | |
7046 | breakpoint. */ | |
7047 | if ((*address) == NULL | |
7048 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
7049 | { |
7050 | if (default_breakpoint_valid) | |
7051 | { | |
c3f6f71d | 7052 | struct symtab_and_line sal; |
fe39c653 | 7053 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 7054 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
7055 | xmalloc (sizeof (struct symtab_and_line)); |
7056 | sal.pc = default_breakpoint_address; | |
7057 | sal.line = default_breakpoint_line; | |
7058 | sal.symtab = default_breakpoint_symtab; | |
6c95b8df | 7059 | sal.pspace = default_breakpoint_pspace; |
c5aa993b | 7060 | sal.section = find_pc_overlay (sal.pc); |
00903456 JK |
7061 | |
7062 | /* "break" without arguments is equivalent to "break *PC" where PC is | |
7063 | the default_breakpoint_address. So make sure to set | |
7064 | sal.explicit_pc to prevent GDB from trying to expand the list of | |
7065 | sals to include all other instances with the same symtab and line. | |
7066 | */ | |
7067 | sal.explicit_pc = 1; | |
7068 | ||
c3f6f71d JM |
7069 | sals->sals[0] = sal; |
7070 | sals->nelts = 1; | |
c906108c SS |
7071 | } |
7072 | else | |
8a3fe4f8 | 7073 | error (_("No default breakpoint address now.")); |
c906108c SS |
7074 | } |
7075 | else | |
7076 | { | |
c906108c | 7077 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
7078 | current_source_symtab (which is decode_line_1's default). This |
7079 | should produce the results we want almost all of the time while | |
1aeae86e AF |
7080 | leaving default_breakpoint_* alone. |
7081 | ObjC: However, don't match an Objective-C method name which | |
7082 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 7083 | |
c214a6fd | 7084 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 7085 | |
c906108c | 7086 | if (default_breakpoint_valid |
0378c332 | 7087 | && (!cursal.symtab |
1aeae86e AF |
7088 | || ((strchr ("+-", (*address)[0]) != NULL) |
7089 | && ((*address)[1] != '[')))) | |
c3f6f71d | 7090 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
0101ce28 JJ |
7091 | default_breakpoint_line, addr_string, |
7092 | not_found_ptr); | |
c906108c | 7093 | else |
0101ce28 JJ |
7094 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
7095 | addr_string, not_found_ptr); | |
c906108c | 7096 | } |
c3f6f71d JM |
7097 | /* For any SAL that didn't have a canonical string, fill one in. */ |
7098 | if (sals->nelts > 0 && *addr_string == NULL) | |
7099 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
7100 | if (addr_start != (*address)) | |
c906108c | 7101 | { |
c3f6f71d JM |
7102 | int i; |
7103 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 7104 | { |
c3f6f71d JM |
7105 | /* Add the string if not present. */ |
7106 | if ((*addr_string)[i] == NULL) | |
7107 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
7108 | } |
7109 | } | |
c3f6f71d | 7110 | } |
c906108c | 7111 | |
c906108c | 7112 | |
c3f6f71d JM |
7113 | /* Convert each SAL into a real PC. Verify that the PC can be |
7114 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 7115 | |
b9362cc7 | 7116 | static void |
c3f6f71d JM |
7117 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, |
7118 | char *address) | |
7119 | { | |
7120 | int i; | |
7121 | for (i = 0; i < sals->nelts; i++) | |
ee53e872 | 7122 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
7123 | } |
7124 | ||
7a697b8d SS |
7125 | /* Fast tracepoints may have restrictions on valid locations. For |
7126 | instance, a fast tracepoint using a jump instead of a trap will | |
7127 | likely have to overwrite more bytes than a trap would, and so can | |
7128 | only be placed where the instruction is longer than the jump, or a | |
7129 | multi-instruction sequence does not have a jump into the middle of | |
7130 | it, etc. */ | |
7131 | ||
7132 | static void | |
7133 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
7134 | struct symtabs_and_lines *sals) | |
7135 | { | |
7136 | int i, rslt; | |
7137 | struct symtab_and_line *sal; | |
7138 | char *msg; | |
7139 | struct cleanup *old_chain; | |
7140 | ||
7141 | for (i = 0; i < sals->nelts; i++) | |
7142 | { | |
7143 | sal = &sals->sals[i]; | |
7144 | ||
7145 | rslt = gdbarch_fast_tracepoint_valid_at (gdbarch, sal->pc, | |
7146 | NULL, &msg); | |
7147 | old_chain = make_cleanup (xfree, msg); | |
7148 | ||
7149 | if (!rslt) | |
7150 | error (_("May not have a fast tracepoint at 0x%s%s"), | |
7151 | paddress (gdbarch, sal->pc), (msg ? msg : "")); | |
7152 | ||
7153 | do_cleanups (old_chain); | |
7154 | } | |
7155 | } | |
7156 | ||
05ff989b | 7157 | static void |
0101ce28 JJ |
7158 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) |
7159 | { | |
7160 | struct captured_parse_breakpoint_args *args = data; | |
7161 | ||
7162 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p, | |
7163 | args->not_found_ptr); | |
0101ce28 JJ |
7164 | } |
7165 | ||
018d34a4 VP |
7166 | /* Given TOK, a string specification of condition and thread, as |
7167 | accepted by the 'break' command, extract the condition | |
7168 | string and thread number and set *COND_STRING and *THREAD. | |
7169 | PC identifies the context at which the condition should be parsed. | |
7170 | If no condition is found, *COND_STRING is set to NULL. | |
7171 | If no thread is found, *THREAD is set to -1. */ | |
7172 | static void | |
7173 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
4a306c9a | 7174 | char **cond_string, int *thread, int *task) |
018d34a4 VP |
7175 | { |
7176 | *cond_string = NULL; | |
7177 | *thread = -1; | |
7178 | while (tok && *tok) | |
7179 | { | |
7180 | char *end_tok; | |
7181 | int toklen; | |
7182 | char *cond_start = NULL; | |
7183 | char *cond_end = NULL; | |
7184 | while (*tok == ' ' || *tok == '\t') | |
7185 | tok++; | |
7186 | ||
7187 | end_tok = tok; | |
7188 | ||
7189 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
7190 | end_tok++; | |
7191 | ||
7192 | toklen = end_tok - tok; | |
7193 | ||
7194 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
7195 | { | |
f7545552 TT |
7196 | struct expression *expr; |
7197 | ||
018d34a4 | 7198 | tok = cond_start = end_tok + 1; |
f7545552 TT |
7199 | expr = parse_exp_1 (&tok, block_for_pc (pc), 0); |
7200 | xfree (expr); | |
018d34a4 VP |
7201 | cond_end = tok; |
7202 | *cond_string = savestring (cond_start, | |
7203 | cond_end - cond_start); | |
7204 | } | |
7205 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
7206 | { | |
7207 | char *tmptok; | |
7208 | ||
7209 | tok = end_tok + 1; | |
7210 | tmptok = tok; | |
7211 | *thread = strtol (tok, &tok, 0); | |
7212 | if (tok == tmptok) | |
7213 | error (_("Junk after thread keyword.")); | |
7214 | if (!valid_thread_id (*thread)) | |
7215 | error (_("Unknown thread %d."), *thread); | |
7216 | } | |
4a306c9a JB |
7217 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
7218 | { | |
7219 | char *tmptok; | |
7220 | ||
7221 | tok = end_tok + 1; | |
7222 | tmptok = tok; | |
7223 | *task = strtol (tok, &tok, 0); | |
7224 | if (tok == tmptok) | |
7225 | error (_("Junk after task keyword.")); | |
7226 | if (!valid_task_id (*task)) | |
b6199126 | 7227 | error (_("Unknown task %d."), *task); |
4a306c9a | 7228 | } |
018d34a4 VP |
7229 | else |
7230 | error (_("Junk at end of arguments.")); | |
7231 | } | |
7232 | } | |
7233 | ||
fd9b8c24 PA |
7234 | /* Set a breakpoint. This function is shared between CLI and MI |
7235 | functions for setting a breakpoint. This function has two major | |
7236 | modes of operations, selected by the PARSE_CONDITION_AND_THREAD | |
7237 | parameter. If non-zero, the function will parse arg, extracting | |
7238 | breakpoint location, address and thread. Otherwise, ARG is just the | |
7239 | location of breakpoint, with condition and thread specified by the | |
7240 | COND_STRING and THREAD parameters. Returns true if any breakpoint | |
7241 | was created; false otherwise. */ | |
0101ce28 | 7242 | |
8cdf0e15 VP |
7243 | int |
7244 | create_breakpoint (struct gdbarch *gdbarch, | |
7245 | char *arg, char *cond_string, int thread, | |
7246 | int parse_condition_and_thread, | |
7247 | int tempflag, int hardwareflag, int traceflag, | |
7248 | int ignore_count, | |
7249 | enum auto_boolean pending_break_support, | |
7250 | struct breakpoint_ops *ops, | |
7251 | int from_tty, | |
7252 | int enabled) | |
c3f6f71d | 7253 | { |
71fff37b | 7254 | struct gdb_exception e; |
c3f6f71d | 7255 | struct symtabs_and_lines sals; |
0101ce28 | 7256 | struct symtab_and_line pending_sal; |
0101ce28 JJ |
7257 | char *copy_arg; |
7258 | char *err_msg; | |
c3f6f71d JM |
7259 | char *addr_start = arg; |
7260 | char **addr_string; | |
7261 | struct cleanup *old_chain; | |
80c99de1 | 7262 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 7263 | struct captured_parse_breakpoint_args parse_args; |
05ff989b | 7264 | int i; |
0101ce28 | 7265 | int pending = 0; |
0101ce28 | 7266 | int not_found = 0; |
1042e4c0 | 7267 | enum bptype type_wanted; |
4a306c9a | 7268 | int task = 0; |
86b17b60 | 7269 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 7270 | |
c3f6f71d JM |
7271 | sals.sals = NULL; |
7272 | sals.nelts = 0; | |
7273 | addr_string = NULL; | |
c3f6f71d | 7274 | |
0101ce28 JJ |
7275 | parse_args.arg_p = &arg; |
7276 | parse_args.sals_p = &sals; | |
7277 | parse_args.addr_string_p = &addr_string; | |
7278 | parse_args.not_found_ptr = ¬_found; | |
7279 | ||
05ff989b AC |
7280 | e = catch_exception (uiout, do_captured_parse_breakpoint, |
7281 | &parse_args, RETURN_MASK_ALL); | |
0101ce28 JJ |
7282 | |
7283 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 7284 | switch (e.reason) |
0101ce28 | 7285 | { |
05ff989b | 7286 | case RETURN_QUIT: |
98deb0da | 7287 | throw_exception (e); |
05ff989b AC |
7288 | case RETURN_ERROR: |
7289 | switch (e.error) | |
0101ce28 | 7290 | { |
05ff989b | 7291 | case NOT_FOUND_ERROR: |
0101ce28 | 7292 | |
05ff989b AC |
7293 | /* If pending breakpoint support is turned off, throw |
7294 | error. */ | |
fa8d40ab JJ |
7295 | |
7296 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
7297 | throw_exception (e); |
7298 | ||
7299 | exception_print (gdb_stderr, e); | |
fa8d40ab | 7300 | |
05ff989b AC |
7301 | /* If pending breakpoint support is auto query and the user |
7302 | selects no, then simply return the error code. */ | |
059fb39f PM |
7303 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
7304 | && !nquery ("Make breakpoint pending on future shared library load? ")) | |
fd9b8c24 | 7305 | return 0; |
fa8d40ab | 7306 | |
05ff989b AC |
7307 | /* At this point, either the user was queried about setting |
7308 | a pending breakpoint and selected yes, or pending | |
7309 | breakpoint behavior is on and thus a pending breakpoint | |
7310 | is defaulted on behalf of the user. */ | |
0101ce28 JJ |
7311 | copy_arg = xstrdup (addr_start); |
7312 | addr_string = ©_arg; | |
7313 | sals.nelts = 1; | |
7314 | sals.sals = &pending_sal; | |
7315 | pending_sal.pc = 0; | |
7316 | pending = 1; | |
05ff989b AC |
7317 | break; |
7318 | default: | |
98deb0da | 7319 | throw_exception (e); |
0101ce28 | 7320 | } |
05ff989b AC |
7321 | default: |
7322 | if (!sals.nelts) | |
fd9b8c24 | 7323 | return 0; |
0101ce28 | 7324 | } |
c3f6f71d JM |
7325 | |
7326 | /* Create a chain of things that always need to be cleaned up. */ | |
7327 | old_chain = make_cleanup (null_cleanup, 0); | |
7328 | ||
0101ce28 JJ |
7329 | if (!pending) |
7330 | { | |
7331 | /* Make sure that all storage allocated to SALS gets freed. */ | |
7332 | make_cleanup (xfree, sals.sals); | |
7333 | ||
7334 | /* Cleanup the addr_string array but not its contents. */ | |
7335 | make_cleanup (xfree, addr_string); | |
7336 | } | |
c3f6f71d | 7337 | |
c3f6f71d JM |
7338 | /* ----------------------------- SNIP ----------------------------- |
7339 | Anything added to the cleanup chain beyond this point is assumed | |
7340 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
7341 | then the memory is not reclaimed. */ |
7342 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d JM |
7343 | |
7344 | /* Mark the contents of the addr_string for cleanup. These go on | |
80c99de1 | 7345 | the bkpt_chain and only occur if the breakpoint create fails. */ |
c3f6f71d JM |
7346 | for (i = 0; i < sals.nelts; i++) |
7347 | { | |
7348 | if (addr_string[i] != NULL) | |
b8c9b27d | 7349 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
7350 | } |
7351 | ||
7352 | /* Resolve all line numbers to PC's and verify that the addresses | |
7353 | are ok for the target. */ | |
0101ce28 JJ |
7354 | if (!pending) |
7355 | breakpoint_sals_to_pc (&sals, addr_start); | |
c3f6f71d | 7356 | |
1042e4c0 | 7357 | type_wanted = (traceflag |
7a697b8d | 7358 | ? (hardwareflag ? bp_fast_tracepoint : bp_tracepoint) |
1042e4c0 SS |
7359 | : (hardwareflag ? bp_hardware_breakpoint : bp_breakpoint)); |
7360 | ||
7a697b8d SS |
7361 | /* Fast tracepoints may have additional restrictions on location. */ |
7362 | if (type_wanted == bp_fast_tracepoint) | |
7363 | check_fast_tracepoint_sals (gdbarch, &sals); | |
7364 | ||
c3f6f71d JM |
7365 | /* Verify that condition can be parsed, before setting any |
7366 | breakpoints. Allocate a separate condition expression for each | |
7367 | breakpoint. */ | |
0101ce28 | 7368 | if (!pending) |
c3f6f71d | 7369 | { |
2f069f6f | 7370 | if (parse_condition_and_thread) |
72b2ff0e VP |
7371 | { |
7372 | /* Here we only parse 'arg' to separate condition | |
7373 | from thread number, so parsing in context of first | |
7374 | sal is OK. When setting the breakpoint we'll | |
7375 | re-parse it in context of each sal. */ | |
7376 | cond_string = NULL; | |
7377 | thread = -1; | |
4a306c9a JB |
7378 | find_condition_and_thread (arg, sals.sals[0].pc, &cond_string, |
7379 | &thread, &task); | |
72b2ff0e VP |
7380 | if (cond_string) |
7381 | make_cleanup (xfree, cond_string); | |
7382 | } | |
2f069f6f | 7383 | else |
72b2ff0e VP |
7384 | { |
7385 | /* Create a private copy of condition string. */ | |
7386 | if (cond_string) | |
7387 | { | |
7388 | cond_string = xstrdup (cond_string); | |
7389 | make_cleanup (xfree, cond_string); | |
7390 | } | |
7391 | } | |
8cdf0e15 VP |
7392 | create_breakpoints_sal (gdbarch, sals, addr_string, cond_string, |
7393 | type_wanted, tempflag ? disp_del : disp_donttouch, | |
7394 | thread, task, ignore_count, ops, from_tty, | |
7395 | enabled); | |
c906108c | 7396 | } |
0101ce28 JJ |
7397 | else |
7398 | { | |
fe3f5fa8 | 7399 | struct symtab_and_line sal = {0}; |
0101ce28 JJ |
7400 | struct breakpoint *b; |
7401 | ||
0101ce28 JJ |
7402 | make_cleanup (xfree, copy_arg); |
7403 | ||
a6d9a66e | 7404 | b = set_raw_breakpoint_without_location (gdbarch, type_wanted); |
0101ce28 JJ |
7405 | set_breakpoint_count (breakpoint_count + 1); |
7406 | b->number = breakpoint_count; | |
72b2ff0e | 7407 | b->thread = -1; |
018d34a4 | 7408 | b->addr_string = addr_string[0]; |
72b2ff0e | 7409 | b->cond_string = NULL; |
0101ce28 | 7410 | b->ignore_count = ignore_count; |
0101ce28 | 7411 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 7412 | b->condition_not_parsed = 1; |
604133b5 | 7413 | b->ops = ops; |
41447f92 | 7414 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
6c95b8df | 7415 | b->pspace = current_program_space; |
74960c60 | 7416 | |
6c95b8df | 7417 | if (enabled && b->pspace->executing_startup |
8bea4e01 UW |
7418 | && (b->type == bp_breakpoint |
7419 | || b->type == bp_hardware_breakpoint)) | |
7420 | b->enable_state = bp_startup_disabled; | |
7421 | ||
0101ce28 JJ |
7422 | mention (b); |
7423 | } | |
7424 | ||
c3f6f71d | 7425 | if (sals.nelts > 1) |
95a42b64 TT |
7426 | { |
7427 | warning (_("Multiple breakpoints were set.\n" | |
7428 | "Use the \"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 7429 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
7430 | } |
7431 | ||
80c99de1 PA |
7432 | /* That's it. Discard the cleanups for data inserted into the |
7433 | breakpoint. */ | |
7434 | discard_cleanups (bkpt_chain); | |
7435 | /* But cleanup everything else. */ | |
c3f6f71d | 7436 | do_cleanups (old_chain); |
217dc9e2 | 7437 | |
80c99de1 | 7438 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
217dc9e2 | 7439 | update_global_location_list (1); |
fd9b8c24 PA |
7440 | |
7441 | return 1; | |
c3f6f71d | 7442 | } |
c906108c | 7443 | |
72b2ff0e VP |
7444 | /* Set a breakpoint. |
7445 | ARG is a string describing breakpoint address, | |
7446 | condition, and thread. | |
7447 | FLAG specifies if a breakpoint is hardware on, | |
7448 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
7449 | and BP_TEMPFLAG. */ | |
7450 | ||
98deb0da | 7451 | static void |
72b2ff0e | 7452 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 7453 | { |
72b2ff0e VP |
7454 | int hardwareflag = flag & BP_HARDWAREFLAG; |
7455 | int tempflag = flag & BP_TEMPFLAG; | |
c3f6f71d | 7456 | |
8cdf0e15 VP |
7457 | create_breakpoint (get_current_arch (), |
7458 | arg, | |
7459 | NULL, 0, 1 /* parse arg */, | |
7460 | tempflag, hardwareflag, 0 /* traceflag */, | |
7461 | 0 /* Ignore count */, | |
7462 | pending_break_support, | |
7463 | NULL /* breakpoint_ops */, | |
7464 | from_tty, | |
7465 | 1 /* enabled */); | |
c906108c SS |
7466 | } |
7467 | ||
72b2ff0e | 7468 | |
c3f6f71d | 7469 | |
c906108c SS |
7470 | /* Helper function for break_command_1 and disassemble_command. */ |
7471 | ||
7472 | void | |
fba45db2 | 7473 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
7474 | { |
7475 | CORE_ADDR pc; | |
7476 | ||
7477 | if (sal->pc == 0 && sal->symtab != NULL) | |
7478 | { | |
7479 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 7480 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
7481 | sal->line, sal->symtab->filename); |
7482 | sal->pc = pc; | |
6a048695 JB |
7483 | |
7484 | /* If this SAL corresponds to a breakpoint inserted using | |
7485 | a line number, then skip the function prologue if necessary. */ | |
7486 | if (sal->explicit_line) | |
059acae7 | 7487 | skip_prologue_sal (sal); |
c906108c SS |
7488 | } |
7489 | ||
7490 | if (sal->section == 0 && sal->symtab != NULL) | |
7491 | { | |
7492 | struct blockvector *bv; | |
c5aa993b JM |
7493 | struct block *b; |
7494 | struct symbol *sym; | |
c906108c | 7495 | |
801e3a5b | 7496 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
7497 | if (bv != NULL) |
7498 | { | |
7f0df278 | 7499 | sym = block_linkage_function (b); |
c906108c SS |
7500 | if (sym != NULL) |
7501 | { | |
7502 | fixup_symbol_section (sym, sal->symtab->objfile); | |
714835d5 | 7503 | sal->section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
7504 | } |
7505 | else | |
7506 | { | |
7507 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
7508 | have to look harder. This case can be executed if we have |
7509 | line numbers but no functions (as can happen in assembly | |
7510 | source). */ | |
c906108c | 7511 | |
c5aa993b | 7512 | struct minimal_symbol *msym; |
6c95b8df PA |
7513 | struct cleanup *old_chain = save_current_space_and_thread (); |
7514 | ||
7515 | switch_to_program_space_and_thread (sal->pspace); | |
c906108c SS |
7516 | |
7517 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
7518 | if (msym) | |
714835d5 | 7519 | sal->section = SYMBOL_OBJ_SECTION (msym); |
6c95b8df PA |
7520 | |
7521 | do_cleanups (old_chain); | |
c906108c SS |
7522 | } |
7523 | } | |
7524 | } | |
7525 | } | |
7526 | ||
7527 | void | |
fba45db2 | 7528 | break_command (char *arg, int from_tty) |
c906108c | 7529 | { |
db107f19 | 7530 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
7531 | } |
7532 | ||
c906108c | 7533 | void |
fba45db2 | 7534 | tbreak_command (char *arg, int from_tty) |
c906108c | 7535 | { |
db107f19 | 7536 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
7537 | } |
7538 | ||
c906108c | 7539 | static void |
fba45db2 | 7540 | hbreak_command (char *arg, int from_tty) |
c906108c | 7541 | { |
db107f19 | 7542 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
7543 | } |
7544 | ||
7545 | static void | |
fba45db2 | 7546 | thbreak_command (char *arg, int from_tty) |
c906108c | 7547 | { |
db107f19 | 7548 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
7549 | } |
7550 | ||
7551 | static void | |
fba45db2 | 7552 | stop_command (char *arg, int from_tty) |
c906108c | 7553 | { |
a3f17187 | 7554 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 7555 | Usage: stop in <function | address>\n\ |
a3f17187 | 7556 | stop at <line>\n")); |
c906108c SS |
7557 | } |
7558 | ||
7559 | static void | |
fba45db2 | 7560 | stopin_command (char *arg, int from_tty) |
c906108c SS |
7561 | { |
7562 | int badInput = 0; | |
7563 | ||
c5aa993b | 7564 | if (arg == (char *) NULL) |
c906108c SS |
7565 | badInput = 1; |
7566 | else if (*arg != '*') | |
7567 | { | |
7568 | char *argptr = arg; | |
7569 | int hasColon = 0; | |
7570 | ||
53a5351d JM |
7571 | /* look for a ':'. If this is a line number specification, then |
7572 | say it is bad, otherwise, it should be an address or | |
7573 | function/method name */ | |
c906108c | 7574 | while (*argptr && !hasColon) |
c5aa993b JM |
7575 | { |
7576 | hasColon = (*argptr == ':'); | |
7577 | argptr++; | |
7578 | } | |
c906108c SS |
7579 | |
7580 | if (hasColon) | |
c5aa993b | 7581 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 7582 | else |
c5aa993b | 7583 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
7584 | } |
7585 | ||
7586 | if (badInput) | |
a3f17187 | 7587 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 7588 | else |
db107f19 | 7589 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
7590 | } |
7591 | ||
7592 | static void | |
fba45db2 | 7593 | stopat_command (char *arg, int from_tty) |
c906108c SS |
7594 | { |
7595 | int badInput = 0; | |
7596 | ||
c5aa993b | 7597 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
7598 | badInput = 1; |
7599 | else | |
7600 | { | |
7601 | char *argptr = arg; | |
7602 | int hasColon = 0; | |
7603 | ||
7604 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 7605 | it is probably a line number. */ |
c906108c | 7606 | while (*argptr && !hasColon) |
c5aa993b JM |
7607 | { |
7608 | hasColon = (*argptr == ':'); | |
7609 | argptr++; | |
7610 | } | |
c906108c SS |
7611 | |
7612 | if (hasColon) | |
c5aa993b | 7613 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 7614 | else |
c5aa993b | 7615 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
7616 | } |
7617 | ||
7618 | if (badInput) | |
a3f17187 | 7619 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 7620 | else |
db107f19 | 7621 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
7622 | } |
7623 | ||
53a5351d JM |
7624 | /* accessflag: hw_write: watch write, |
7625 | hw_read: watch read, | |
7626 | hw_access: watch access (read or write) */ | |
c906108c | 7627 | static void |
fba45db2 | 7628 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c | 7629 | { |
a6d9a66e | 7630 | struct gdbarch *gdbarch = get_current_arch (); |
d983da9c | 7631 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c | 7632 | struct expression *exp; |
60e1c644 | 7633 | struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
c906108c SS |
7634 | struct value *val, *mark; |
7635 | struct frame_info *frame; | |
c906108c SS |
7636 | char *exp_start = NULL; |
7637 | char *exp_end = NULL; | |
37e4754d | 7638 | char *tok, *id_tok_start, *end_tok; |
c906108c SS |
7639 | int toklen; |
7640 | char *cond_start = NULL; | |
7641 | char *cond_end = NULL; | |
c906108c SS |
7642 | int i, other_type_used, target_resources_ok = 0; |
7643 | enum bptype bp_type; | |
7644 | int mem_cnt = 0; | |
37e4754d | 7645 | int thread = -1; |
c906108c | 7646 | |
37e4754d LM |
7647 | /* Make sure that we actually have parameters to parse. */ |
7648 | if (arg != NULL && arg[0] != '\0') | |
7649 | { | |
7650 | toklen = strlen (arg); /* Size of argument list. */ | |
7651 | ||
7652 | /* Points tok to the end of the argument list. */ | |
7653 | tok = arg + toklen - 1; | |
7654 | ||
7655 | /* Go backwards in the parameters list. Skip the last parameter. | |
7656 | If we're expecting a 'thread <thread_num>' parameter, this should | |
7657 | be the thread identifier. */ | |
7658 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
7659 | tok--; | |
7660 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
7661 | tok--; | |
7662 | ||
7663 | /* Points end_tok to the beginning of the last token. */ | |
7664 | id_tok_start = tok + 1; | |
7665 | ||
7666 | /* Go backwards in the parameters list. Skip one more parameter. | |
7667 | If we're expecting a 'thread <thread_num>' parameter, we should | |
7668 | reach a "thread" token. */ | |
7669 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
7670 | tok--; | |
7671 | ||
7672 | end_tok = tok; | |
7673 | ||
7674 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
7675 | tok--; | |
7676 | ||
7677 | /* Move the pointer forward to skip the whitespace and | |
7678 | calculate the length of the token. */ | |
7679 | tok++; | |
7680 | toklen = end_tok - tok; | |
7681 | ||
7682 | if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
7683 | { | |
7684 | /* At this point we've found a "thread" token, which means | |
7685 | the user is trying to set a watchpoint that triggers | |
7686 | only in a specific thread. */ | |
7687 | char *endp; | |
7688 | ||
7689 | /* Extract the thread ID from the next token. */ | |
7690 | thread = strtol (id_tok_start, &endp, 0); | |
7691 | ||
7692 | /* Check if the user provided a valid numeric value for the | |
7693 | thread ID. */ | |
7694 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
7695 | error (_("Invalid thread ID specification %s."), id_tok_start); | |
7696 | ||
7697 | /* Check if the thread actually exists. */ | |
7698 | if (!valid_thread_id (thread)) | |
7699 | error (_("Unknown thread %d."), thread); | |
7700 | ||
7701 | /* Truncate the string and get rid of the thread <thread_num> | |
7702 | parameter before the parameter list is parsed by the | |
7703 | evaluate_expression() function. */ | |
7704 | *tok = '\0'; | |
7705 | } | |
7706 | } | |
7707 | ||
7708 | /* Parse the rest of the arguments. */ | |
c906108c SS |
7709 | innermost_block = NULL; |
7710 | exp_start = arg; | |
7711 | exp = parse_exp_1 (&arg, 0, 0); | |
7712 | exp_end = arg; | |
fa8a61dc TT |
7713 | /* Remove trailing whitespace from the expression before saving it. |
7714 | This makes the eventual display of the expression string a bit | |
7715 | prettier. */ | |
7716 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
7717 | --exp_end; | |
7718 | ||
c906108c SS |
7719 | exp_valid_block = innermost_block; |
7720 | mark = value_mark (); | |
fa4727a6 DJ |
7721 | fetch_watchpoint_value (exp, &val, NULL, NULL); |
7722 | if (val != NULL) | |
7723 | release_value (val); | |
c906108c SS |
7724 | |
7725 | tok = arg; | |
7726 | while (*tok == ' ' || *tok == '\t') | |
7727 | tok++; | |
7728 | end_tok = tok; | |
7729 | ||
7730 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
7731 | end_tok++; | |
7732 | ||
7733 | toklen = end_tok - tok; | |
7734 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
7735 | { | |
2d134ed3 PA |
7736 | struct expression *cond; |
7737 | ||
60e1c644 | 7738 | innermost_block = NULL; |
c906108c SS |
7739 | tok = cond_start = end_tok + 1; |
7740 | cond = parse_exp_1 (&tok, 0, 0); | |
60e1c644 PA |
7741 | |
7742 | /* The watchpoint expression may not be local, but the condition | |
7743 | may still be. E.g.: `watch global if local > 0'. */ | |
7744 | cond_exp_valid_block = innermost_block; | |
7745 | ||
2d134ed3 | 7746 | xfree (cond); |
c906108c SS |
7747 | cond_end = tok; |
7748 | } | |
7749 | if (*tok) | |
8a3fe4f8 | 7750 | error (_("Junk at end of command.")); |
c906108c | 7751 | |
53a5351d | 7752 | if (accessflag == hw_read) |
c5aa993b | 7753 | bp_type = bp_read_watchpoint; |
53a5351d | 7754 | else if (accessflag == hw_access) |
c5aa993b JM |
7755 | bp_type = bp_access_watchpoint; |
7756 | else | |
7757 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
7758 | |
7759 | mem_cnt = can_use_hardware_watchpoint (val); | |
7760 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
8a3fe4f8 | 7761 | error (_("Expression cannot be implemented with read/access watchpoint.")); |
c5aa993b JM |
7762 | if (mem_cnt != 0) |
7763 | { | |
7764 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d | 7765 | target_resources_ok = |
d92524f1 | 7766 | target_can_use_hardware_watchpoint (bp_type, i + mem_cnt, |
53a5351d | 7767 | other_type_used); |
c5aa993b | 7768 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 7769 | error (_("Target does not support this type of hardware watchpoint.")); |
53a5351d | 7770 | |
c5aa993b | 7771 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 7772 | error (_("Target can only support one kind of HW watchpoint at a time.")); |
c5aa993b | 7773 | } |
c906108c | 7774 | |
4d28f7a8 KB |
7775 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
7776 | watchpoint could not be set. */ | |
7777 | if (!mem_cnt || target_resources_ok <= 0) | |
7778 | bp_type = bp_watchpoint; | |
7779 | ||
d983da9c | 7780 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
7781 | |
7782 | /* If the expression is "local", then set up a "watchpoint scope" | |
7783 | breakpoint at the point where we've left the scope of the watchpoint | |
7784 | expression. Create the scope breakpoint before the watchpoint, so | |
7785 | that we will encounter it first in bpstat_stop_status. */ | |
60e1c644 | 7786 | if (exp_valid_block && frame) |
d983da9c | 7787 | { |
edb3359d DJ |
7788 | if (frame_id_p (frame_unwind_caller_id (frame))) |
7789 | { | |
7790 | scope_breakpoint | |
a6d9a66e UW |
7791 | = create_internal_breakpoint (frame_unwind_caller_arch (frame), |
7792 | frame_unwind_caller_pc (frame), | |
edb3359d | 7793 | bp_watchpoint_scope); |
d983da9c | 7794 | |
edb3359d | 7795 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 7796 | |
edb3359d DJ |
7797 | /* Automatically delete the breakpoint when it hits. */ |
7798 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 7799 | |
edb3359d DJ |
7800 | /* Only break in the proper frame (help with recursion). */ |
7801 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 7802 | |
edb3359d | 7803 | /* Set the address at which we will stop. */ |
a6d9a66e UW |
7804 | scope_breakpoint->loc->gdbarch |
7805 | = frame_unwind_caller_arch (frame); | |
edb3359d DJ |
7806 | scope_breakpoint->loc->requested_address |
7807 | = frame_unwind_caller_pc (frame); | |
7808 | scope_breakpoint->loc->address | |
a6d9a66e UW |
7809 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
7810 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
7811 | scope_breakpoint->type); |
7812 | } | |
d983da9c DJ |
7813 | } |
7814 | ||
c906108c | 7815 | /* Now set up the breakpoint. */ |
2d134ed3 | 7816 | b = set_raw_breakpoint_without_location (NULL, bp_type); |
c906108c SS |
7817 | set_breakpoint_count (breakpoint_count + 1); |
7818 | b->number = breakpoint_count; | |
37e4754d | 7819 | b->thread = thread; |
b5de0fa7 | 7820 | b->disposition = disp_donttouch; |
c906108c SS |
7821 | b->exp = exp; |
7822 | b->exp_valid_block = exp_valid_block; | |
60e1c644 | 7823 | b->cond_exp_valid_block = cond_exp_valid_block; |
c906108c SS |
7824 | b->exp_string = savestring (exp_start, exp_end - exp_start); |
7825 | b->val = val; | |
fa4727a6 | 7826 | b->val_valid = 1; |
c906108c SS |
7827 | if (cond_start) |
7828 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
7829 | else | |
7830 | b->cond_string = 0; | |
c5aa993b | 7831 | |
c906108c | 7832 | if (frame) |
f6bc2008 PA |
7833 | { |
7834 | b->watchpoint_frame = get_frame_id (frame); | |
7835 | b->watchpoint_thread = inferior_ptid; | |
7836 | } | |
c906108c | 7837 | else |
f6bc2008 PA |
7838 | { |
7839 | b->watchpoint_frame = null_frame_id; | |
7840 | b->watchpoint_thread = null_ptid; | |
7841 | } | |
c906108c | 7842 | |
d983da9c | 7843 | if (scope_breakpoint != NULL) |
c906108c | 7844 | { |
d983da9c DJ |
7845 | /* The scope breakpoint is related to the watchpoint. We will |
7846 | need to act on them together. */ | |
7847 | b->related_breakpoint = scope_breakpoint; | |
7848 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 7849 | } |
d983da9c | 7850 | |
c906108c | 7851 | value_free_to_mark (mark); |
2d134ed3 PA |
7852 | |
7853 | /* Finally update the new watchpoint. This creates the locations | |
7854 | that should be inserted. */ | |
7855 | update_watchpoint (b, 1); | |
7856 | ||
c906108c | 7857 | mention (b); |
b60e7edf | 7858 | update_global_location_list (1); |
c906108c SS |
7859 | } |
7860 | ||
7861 | /* Return count of locations need to be watched and can be handled | |
7862 | in hardware. If the watchpoint can not be handled | |
7863 | in hardware return zero. */ | |
7864 | ||
c906108c | 7865 | static int |
fba45db2 | 7866 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
7867 | { |
7868 | int found_memory_cnt = 0; | |
2e70b7b9 | 7869 | struct value *head = v; |
c906108c SS |
7870 | |
7871 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 7872 | if (!can_use_hw_watchpoints) |
c906108c | 7873 | return 0; |
c5aa993b | 7874 | |
5c44784c JM |
7875 | /* Make sure that the value of the expression depends only upon |
7876 | memory contents, and values computed from them within GDB. If we | |
7877 | find any register references or function calls, we can't use a | |
7878 | hardware watchpoint. | |
7879 | ||
7880 | The idea here is that evaluating an expression generates a series | |
7881 | of values, one holding the value of every subexpression. (The | |
7882 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
7883 | a*b+c.) GDB's values hold almost enough information to establish | |
7884 | the criteria given above --- they identify memory lvalues, | |
7885 | register lvalues, computed values, etcetera. So we can evaluate | |
7886 | the expression, and then scan the chain of values that leaves | |
7887 | behind to decide whether we can detect any possible change to the | |
7888 | expression's final value using only hardware watchpoints. | |
7889 | ||
7890 | However, I don't think that the values returned by inferior | |
7891 | function calls are special in any way. So this function may not | |
7892 | notice that an expression involving an inferior function call | |
7893 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 7894 | for (; v; v = value_next (v)) |
c906108c | 7895 | { |
5c44784c | 7896 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 7897 | { |
d69fe07e | 7898 | if (value_lazy (v)) |
5c44784c JM |
7899 | /* A lazy memory lvalue is one that GDB never needed to fetch; |
7900 | we either just used its address (e.g., `a' in `a.b') or | |
7901 | we never needed it at all (e.g., `a' in `a,b'). */ | |
7902 | ; | |
53a5351d | 7903 | else |
5c44784c JM |
7904 | { |
7905 | /* Ahh, memory we actually used! Check if we can cover | |
7906 | it with hardware watchpoints. */ | |
df407dfe | 7907 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
7908 | |
7909 | /* We only watch structs and arrays if user asked for it | |
7910 | explicitly, never if they just happen to appear in a | |
7911 | middle of some value chain. */ | |
7912 | if (v == head | |
7913 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
7914 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
7915 | { | |
42ae5230 | 7916 | CORE_ADDR vaddr = value_address (v); |
df407dfe | 7917 | int len = TYPE_LENGTH (value_type (v)); |
2e70b7b9 | 7918 | |
d92524f1 | 7919 | if (!target_region_ok_for_hw_watchpoint (vaddr, len)) |
2e70b7b9 MS |
7920 | return 0; |
7921 | else | |
7922 | found_memory_cnt++; | |
7923 | } | |
5c44784c | 7924 | } |
c5aa993b | 7925 | } |
5086187c AC |
7926 | else if (VALUE_LVAL (v) != not_lval |
7927 | && deprecated_value_modifiable (v) == 0) | |
53a5351d | 7928 | return 0; /* ??? What does this represent? */ |
5086187c | 7929 | else if (VALUE_LVAL (v) == lval_register) |
53a5351d | 7930 | return 0; /* cannot watch a register with a HW watchpoint */ |
c906108c SS |
7931 | } |
7932 | ||
7933 | /* The expression itself looks suitable for using a hardware | |
7934 | watchpoint, but give the target machine a chance to reject it. */ | |
7935 | return found_memory_cnt; | |
7936 | } | |
7937 | ||
8b93c638 | 7938 | void |
fba45db2 | 7939 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
7940 | { |
7941 | watch_command (arg, from_tty); | |
7942 | } | |
8926118c | 7943 | |
c5aa993b | 7944 | static void |
fba45db2 | 7945 | watch_command (char *arg, int from_tty) |
c906108c | 7946 | { |
53a5351d | 7947 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
7948 | } |
7949 | ||
8b93c638 | 7950 | void |
fba45db2 | 7951 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
7952 | { |
7953 | rwatch_command (arg, from_tty); | |
7954 | } | |
8926118c | 7955 | |
c5aa993b | 7956 | static void |
fba45db2 | 7957 | rwatch_command (char *arg, int from_tty) |
c906108c | 7958 | { |
53a5351d | 7959 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
7960 | } |
7961 | ||
8b93c638 | 7962 | void |
fba45db2 | 7963 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
7964 | { |
7965 | awatch_command (arg, from_tty); | |
7966 | } | |
8926118c | 7967 | |
c5aa993b | 7968 | static void |
fba45db2 | 7969 | awatch_command (char *arg, int from_tty) |
c906108c | 7970 | { |
53a5351d | 7971 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 7972 | } |
c906108c | 7973 | \f |
c5aa993b | 7974 | |
43ff13b4 | 7975 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
7976 | because it uses the mechanisms of breakpoints. */ |
7977 | ||
bfec99b2 PA |
7978 | struct until_break_command_continuation_args |
7979 | { | |
7980 | struct breakpoint *breakpoint; | |
7981 | struct breakpoint *breakpoint2; | |
7982 | }; | |
7983 | ||
43ff13b4 JM |
7984 | /* This function is called by fetch_inferior_event via the |
7985 | cmd_continuation pointer, to complete the until command. It takes | |
7986 | care of cleaning up the temporary breakpoints set up by the until | |
7987 | command. */ | |
c2c6d25f | 7988 | static void |
604ead4a | 7989 | until_break_command_continuation (void *arg) |
43ff13b4 | 7990 | { |
bfec99b2 PA |
7991 | struct until_break_command_continuation_args *a = arg; |
7992 | ||
7993 | delete_breakpoint (a->breakpoint); | |
7994 | if (a->breakpoint2) | |
7995 | delete_breakpoint (a->breakpoint2); | |
43ff13b4 JM |
7996 | } |
7997 | ||
c906108c | 7998 | void |
ae66c1fc | 7999 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
8000 | { |
8001 | struct symtabs_and_lines sals; | |
8002 | struct symtab_and_line sal; | |
206415a3 | 8003 | struct frame_info *frame = get_selected_frame (NULL); |
c906108c | 8004 | struct breakpoint *breakpoint; |
f107f563 | 8005 | struct breakpoint *breakpoint2 = NULL; |
c906108c SS |
8006 | struct cleanup *old_chain; |
8007 | ||
8008 | clear_proceed_status (); | |
8009 | ||
8010 | /* Set a breakpoint where the user wants it and at return from | |
8011 | this function */ | |
c5aa993b | 8012 | |
c906108c SS |
8013 | if (default_breakpoint_valid) |
8014 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 8015 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 8016 | else |
53a5351d | 8017 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 8018 | 0, (char ***) NULL, NULL); |
c5aa993b | 8019 | |
c906108c | 8020 | if (sals.nelts != 1) |
8a3fe4f8 | 8021 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 8022 | |
c906108c | 8023 | sal = sals.sals[0]; |
b8c9b27d | 8024 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 8025 | |
c906108c | 8026 | if (*arg) |
8a3fe4f8 | 8027 | error (_("Junk at end of arguments.")); |
c5aa993b | 8028 | |
c906108c | 8029 | resolve_sal_pc (&sal); |
c5aa993b | 8030 | |
ae66c1fc EZ |
8031 | if (anywhere) |
8032 | /* If the user told us to continue until a specified location, | |
8033 | we don't specify a frame at which we need to stop. */ | |
a6d9a66e UW |
8034 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
8035 | null_frame_id, bp_until); | |
ae66c1fc | 8036 | else |
edb3359d | 8037 | /* Otherwise, specify the selected frame, because we want to stop only |
ae66c1fc | 8038 | at the very same frame. */ |
a6d9a66e UW |
8039 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
8040 | get_stack_frame_id (frame), | |
ae66c1fc | 8041 | bp_until); |
c5aa993b | 8042 | |
f107f563 | 8043 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
c906108c | 8044 | |
ae66c1fc EZ |
8045 | /* Keep within the current frame, or in frames called by the current |
8046 | one. */ | |
edb3359d DJ |
8047 | |
8048 | if (frame_id_p (frame_unwind_caller_id (frame))) | |
c906108c | 8049 | { |
edb3359d DJ |
8050 | sal = find_pc_line (frame_unwind_caller_pc (frame), 0); |
8051 | sal.pc = frame_unwind_caller_pc (frame); | |
a6d9a66e UW |
8052 | breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame), |
8053 | sal, | |
edb3359d | 8054 | frame_unwind_caller_id (frame), |
f107f563 VP |
8055 | bp_until); |
8056 | make_cleanup_delete_breakpoint (breakpoint2); | |
c906108c | 8057 | } |
c5aa993b | 8058 | |
c906108c | 8059 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
f107f563 VP |
8060 | |
8061 | /* If we are running asynchronously, and proceed call above has actually | |
8062 | managed to start the target, arrange for breakpoints to be | |
8063 | deleted when the target stops. Otherwise, we're already stopped and | |
8064 | delete breakpoints via cleanup chain. */ | |
8065 | ||
8ea051c5 | 8066 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 8067 | { |
bfec99b2 PA |
8068 | struct until_break_command_continuation_args *args; |
8069 | args = xmalloc (sizeof (*args)); | |
f107f563 | 8070 | |
bfec99b2 PA |
8071 | args->breakpoint = breakpoint; |
8072 | args->breakpoint2 = breakpoint2; | |
f107f563 VP |
8073 | |
8074 | discard_cleanups (old_chain); | |
95e54da7 PA |
8075 | add_continuation (inferior_thread (), |
8076 | until_break_command_continuation, args, | |
604ead4a | 8077 | xfree); |
f107f563 VP |
8078 | } |
8079 | else | |
c5aa993b | 8080 | do_cleanups (old_chain); |
c906108c | 8081 | } |
ae66c1fc | 8082 | |
c906108c | 8083 | static void |
fba45db2 | 8084 | ep_skip_leading_whitespace (char **s) |
c906108c | 8085 | { |
c5aa993b JM |
8086 | if ((s == NULL) || (*s == NULL)) |
8087 | return; | |
8088 | while (isspace (**s)) | |
8089 | *s += 1; | |
c906108c | 8090 | } |
c5aa993b | 8091 | |
c906108c SS |
8092 | /* This function attempts to parse an optional "if <cond>" clause |
8093 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 8094 | |
c906108c SS |
8095 | Else, it returns a pointer to the condition string. (It does not |
8096 | attempt to evaluate the string against a particular block.) And, | |
8097 | it updates arg to point to the first character following the parsed | |
8098 | if clause in the arg string. */ | |
53a5351d | 8099 | |
c906108c | 8100 | static char * |
fba45db2 | 8101 | ep_parse_optional_if_clause (char **arg) |
c906108c | 8102 | { |
c5aa993b JM |
8103 | char *cond_string; |
8104 | ||
8105 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 8106 | return NULL; |
c5aa993b | 8107 | |
c906108c SS |
8108 | /* Skip the "if" keyword. */ |
8109 | (*arg) += 2; | |
c5aa993b | 8110 | |
c906108c SS |
8111 | /* Skip any extra leading whitespace, and record the start of the |
8112 | condition string. */ | |
8113 | ep_skip_leading_whitespace (arg); | |
8114 | cond_string = *arg; | |
c5aa993b | 8115 | |
c906108c SS |
8116 | /* Assume that the condition occupies the remainder of the arg string. */ |
8117 | (*arg) += strlen (cond_string); | |
c5aa993b | 8118 | |
c906108c SS |
8119 | return cond_string; |
8120 | } | |
c5aa993b | 8121 | |
c906108c SS |
8122 | /* Commands to deal with catching events, such as signals, exceptions, |
8123 | process start/exit, etc. */ | |
c5aa993b JM |
8124 | |
8125 | typedef enum | |
8126 | { | |
44feb3ce TT |
8127 | catch_fork_temporary, catch_vfork_temporary, |
8128 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
8129 | } |
8130 | catch_fork_kind; | |
8131 | ||
c906108c | 8132 | static void |
44feb3ce | 8133 | catch_fork_command_1 (char *arg, int from_tty, struct cmd_list_element *command) |
c906108c | 8134 | { |
a6d9a66e | 8135 | struct gdbarch *gdbarch = get_current_arch (); |
c5aa993b | 8136 | char *cond_string = NULL; |
44feb3ce TT |
8137 | catch_fork_kind fork_kind; |
8138 | int tempflag; | |
8139 | ||
8140 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
8141 | tempflag = (fork_kind == catch_fork_temporary | |
8142 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 8143 | |
44feb3ce TT |
8144 | if (!arg) |
8145 | arg = ""; | |
c906108c | 8146 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 8147 | |
c906108c | 8148 | /* The allowed syntax is: |
c5aa993b JM |
8149 | catch [v]fork |
8150 | catch [v]fork if <cond> | |
8151 | ||
c906108c SS |
8152 | First, check if there's an if clause. */ |
8153 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 8154 | |
c906108c | 8155 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 8156 | error (_("Junk at end of arguments.")); |
c5aa993b | 8157 | |
c906108c SS |
8158 | /* If this target supports it, create a fork or vfork catchpoint |
8159 | and enable reporting of such events. */ | |
c5aa993b JM |
8160 | switch (fork_kind) |
8161 | { | |
44feb3ce TT |
8162 | case catch_fork_temporary: |
8163 | case catch_fork_permanent: | |
a6d9a66e | 8164 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 8165 | &catch_fork_breakpoint_ops); |
c906108c | 8166 | break; |
44feb3ce TT |
8167 | case catch_vfork_temporary: |
8168 | case catch_vfork_permanent: | |
a6d9a66e | 8169 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 8170 | &catch_vfork_breakpoint_ops); |
c906108c | 8171 | break; |
c5aa993b | 8172 | default: |
8a3fe4f8 | 8173 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 8174 | break; |
c5aa993b | 8175 | } |
c906108c SS |
8176 | } |
8177 | ||
8178 | static void | |
44feb3ce | 8179 | catch_exec_command_1 (char *arg, int from_tty, struct cmd_list_element *command) |
c906108c | 8180 | { |
a6d9a66e | 8181 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 8182 | int tempflag; |
c5aa993b | 8183 | char *cond_string = NULL; |
c906108c | 8184 | |
44feb3ce TT |
8185 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
8186 | ||
8187 | if (!arg) | |
8188 | arg = ""; | |
c906108c SS |
8189 | ep_skip_leading_whitespace (&arg); |
8190 | ||
8191 | /* The allowed syntax is: | |
c5aa993b JM |
8192 | catch exec |
8193 | catch exec if <cond> | |
c906108c SS |
8194 | |
8195 | First, check if there's an if clause. */ | |
8196 | cond_string = ep_parse_optional_if_clause (&arg); | |
8197 | ||
8198 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 8199 | error (_("Junk at end of arguments.")); |
c906108c SS |
8200 | |
8201 | /* If this target supports it, create an exec catchpoint | |
8202 | and enable reporting of such events. */ | |
a6d9a66e UW |
8203 | create_catchpoint (gdbarch, tempflag, cond_string, |
8204 | &catch_exec_breakpoint_ops); | |
c906108c | 8205 | } |
c5aa993b | 8206 | |
3086aeae DJ |
8207 | static enum print_stop_action |
8208 | print_exception_catchpoint (struct breakpoint *b) | |
8209 | { | |
ade92717 | 8210 | int bp_temp, bp_throw; |
3086aeae | 8211 | |
ade92717 | 8212 | annotate_catchpoint (b->number); |
3086aeae | 8213 | |
ade92717 AR |
8214 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
8215 | if (b->loc->address != b->loc->requested_address) | |
8216 | breakpoint_adjustment_warning (b->loc->requested_address, | |
8217 | b->loc->address, | |
8218 | b->number, 1); | |
df2b6d2d | 8219 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
8220 | ui_out_text (uiout, |
8221 | bp_temp ? "Temporary catchpoint " | |
8222 | : "Catchpoint "); | |
8223 | if (!ui_out_is_mi_like_p (uiout)) | |
8224 | ui_out_field_int (uiout, "bkptno", b->number); | |
8225 | ui_out_text (uiout, | |
c0b37c48 AR |
8226 | bp_throw ? " (exception thrown), " |
8227 | : " (exception caught), "); | |
ade92717 AR |
8228 | if (ui_out_is_mi_like_p (uiout)) |
8229 | { | |
8230 | ui_out_field_string (uiout, "reason", | |
8231 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
8232 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8233 | ui_out_field_int (uiout, "bkptno", b->number); | |
8234 | } | |
3086aeae DJ |
8235 | return PRINT_SRC_AND_LOC; |
8236 | } | |
8237 | ||
8238 | static void | |
a6d9a66e | 8239 | print_one_exception_catchpoint (struct breakpoint *b, struct bp_location **last_loc) |
3086aeae | 8240 | { |
79a45b7d TT |
8241 | struct value_print_options opts; |
8242 | get_user_print_options (&opts); | |
8243 | if (opts.addressprint) | |
3086aeae DJ |
8244 | { |
8245 | annotate_field (4); | |
604133b5 AR |
8246 | if (b->loc == NULL || b->loc->shlib_disabled) |
8247 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
8248 | else | |
5af949e3 UW |
8249 | ui_out_field_core_addr (uiout, "addr", |
8250 | b->loc->gdbarch, b->loc->address); | |
3086aeae DJ |
8251 | } |
8252 | annotate_field (5); | |
604133b5 | 8253 | if (b->loc) |
a6d9a66e | 8254 | *last_loc = b->loc; |
3086aeae DJ |
8255 | if (strstr (b->addr_string, "throw") != NULL) |
8256 | ui_out_field_string (uiout, "what", "exception throw"); | |
8257 | else | |
8258 | ui_out_field_string (uiout, "what", "exception catch"); | |
8259 | } | |
8260 | ||
8261 | static void | |
8262 | print_mention_exception_catchpoint (struct breakpoint *b) | |
8263 | { | |
ade92717 AR |
8264 | int bp_temp; |
8265 | int bp_throw; | |
8266 | ||
df2b6d2d | 8267 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
8268 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
8269 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
8270 | : _("Catchpoint ")); | |
8271 | ui_out_field_int (uiout, "bkptno", b->number); | |
8272 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
8273 | : _(" (catch)")); | |
3086aeae DJ |
8274 | } |
8275 | ||
8276 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { | |
ce78b96d JB |
8277 | NULL, /* insert */ |
8278 | NULL, /* remove */ | |
8279 | NULL, /* breakpoint_hit */ | |
3086aeae DJ |
8280 | print_exception_catchpoint, |
8281 | print_one_exception_catchpoint, | |
8282 | print_mention_exception_catchpoint | |
8283 | }; | |
8284 | ||
8285 | static int | |
8286 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
8287 | enum exception_event_kind ex_event, int from_tty) | |
8288 | { | |
604133b5 AR |
8289 | char *trigger_func_name; |
8290 | ||
3086aeae | 8291 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 8292 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 8293 | else |
604133b5 | 8294 | trigger_func_name = "__cxa_throw"; |
3086aeae | 8295 | |
8cdf0e15 VP |
8296 | create_breakpoint (get_current_arch (), |
8297 | trigger_func_name, cond_string, -1, | |
8298 | 0 /* condition and thread are valid. */, | |
8299 | tempflag, 0, 0, | |
8300 | 0, | |
8301 | AUTO_BOOLEAN_TRUE /* pending */, | |
8302 | &gnu_v3_exception_catchpoint_ops, from_tty, | |
8303 | 1 /* enabled */); | |
3086aeae | 8304 | |
3086aeae DJ |
8305 | return 1; |
8306 | } | |
8307 | ||
c5aa993b | 8308 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
8309 | |
8310 | static void | |
fba45db2 KB |
8311 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
8312 | int tempflag, int from_tty) | |
c906108c | 8313 | { |
c5aa993b JM |
8314 | char *cond_string = NULL; |
8315 | struct symtab_and_line *sal = NULL; | |
8316 | ||
44feb3ce TT |
8317 | if (!arg) |
8318 | arg = ""; | |
c906108c | 8319 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 8320 | |
c906108c SS |
8321 | cond_string = ep_parse_optional_if_clause (&arg); |
8322 | ||
8323 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 8324 | error (_("Junk at end of arguments.")); |
c906108c | 8325 | |
059fb39f PM |
8326 | if (ex_event != EX_EVENT_THROW |
8327 | && ex_event != EX_EVENT_CATCH) | |
8a3fe4f8 | 8328 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 8329 | |
3086aeae DJ |
8330 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
8331 | return; | |
8332 | ||
8a3fe4f8 | 8333 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
8334 | } |
8335 | ||
44feb3ce TT |
8336 | /* Implementation of "catch catch" command. */ |
8337 | ||
8338 | static void | |
8339 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
8340 | { | |
8341 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8342 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); | |
8343 | } | |
8344 | ||
8345 | /* Implementation of "catch throw" command. */ | |
8346 | ||
8347 | static void | |
8348 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
8349 | { | |
8350 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8351 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); | |
8352 | } | |
8353 | ||
f7f9143b JB |
8354 | /* Create a breakpoint struct for Ada exception catchpoints. */ |
8355 | ||
8356 | static void | |
a6d9a66e UW |
8357 | create_ada_exception_breakpoint (struct gdbarch *gdbarch, |
8358 | struct symtab_and_line sal, | |
f7f9143b JB |
8359 | char *addr_string, |
8360 | char *exp_string, | |
8361 | char *cond_string, | |
8362 | struct expression *cond, | |
8363 | struct breakpoint_ops *ops, | |
8364 | int tempflag, | |
8365 | int from_tty) | |
8366 | { | |
8367 | struct breakpoint *b; | |
8368 | ||
8369 | if (from_tty) | |
8370 | { | |
5af949e3 UW |
8371 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
8372 | if (!loc_gdbarch) | |
8373 | loc_gdbarch = gdbarch; | |
8374 | ||
6c95b8df PA |
8375 | describe_other_breakpoints (loc_gdbarch, |
8376 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
8377 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
8378 | version for exception catchpoints, because two catchpoints | |
8379 | used for different exception names will use the same address. | |
8380 | In this case, a "breakpoint ... also set at..." warning is | |
8381 | unproductive. Besides. the warning phrasing is also a bit | |
8382 | inapropriate, we should use the word catchpoint, and tell | |
8383 | the user what type of catchpoint it is. The above is good | |
8384 | enough for now, though. */ | |
8385 | } | |
8386 | ||
a6d9a66e | 8387 | b = set_raw_breakpoint (gdbarch, sal, bp_breakpoint); |
f7f9143b JB |
8388 | set_breakpoint_count (breakpoint_count + 1); |
8389 | ||
8390 | b->enable_state = bp_enabled; | |
8391 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
8392 | b->number = breakpoint_count; | |
8393 | b->ignore_count = 0; | |
511a6cd4 | 8394 | b->loc->cond = cond; |
f7f9143b JB |
8395 | b->addr_string = addr_string; |
8396 | b->language = language_ada; | |
8397 | b->cond_string = cond_string; | |
8398 | b->exp_string = exp_string; | |
8399 | b->thread = -1; | |
8400 | b->ops = ops; | |
f7f9143b JB |
8401 | |
8402 | mention (b); | |
b60e7edf | 8403 | update_global_location_list (1); |
f7f9143b JB |
8404 | } |
8405 | ||
8406 | /* Implement the "catch exception" command. */ | |
8407 | ||
8408 | static void | |
44feb3ce TT |
8409 | catch_ada_exception_command (char *arg, int from_tty, |
8410 | struct cmd_list_element *command) | |
f7f9143b | 8411 | { |
a6d9a66e | 8412 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 8413 | int tempflag; |
f7f9143b JB |
8414 | struct symtab_and_line sal; |
8415 | enum bptype type; | |
8416 | char *addr_string = NULL; | |
8417 | char *exp_string = NULL; | |
8418 | char *cond_string = NULL; | |
8419 | struct expression *cond = NULL; | |
8420 | struct breakpoint_ops *ops = NULL; | |
8421 | ||
44feb3ce TT |
8422 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
8423 | ||
8424 | if (!arg) | |
8425 | arg = ""; | |
f7f9143b JB |
8426 | sal = ada_decode_exception_location (arg, &addr_string, &exp_string, |
8427 | &cond_string, &cond, &ops); | |
a6d9a66e | 8428 | create_ada_exception_breakpoint (gdbarch, sal, addr_string, exp_string, |
f7f9143b JB |
8429 | cond_string, cond, ops, tempflag, |
8430 | from_tty); | |
8431 | } | |
8432 | ||
a96d9b2e SDJ |
8433 | /* Cleanup function for a syscall filter list. */ |
8434 | static void | |
8435 | clean_up_filters (void *arg) | |
8436 | { | |
8437 | VEC(int) *iter = *(VEC(int) **) arg; | |
8438 | VEC_free (int, iter); | |
8439 | } | |
8440 | ||
8441 | /* Splits the argument using space as delimiter. Returns an xmalloc'd | |
8442 | filter list, or NULL if no filtering is required. */ | |
8443 | static VEC(int) * | |
8444 | catch_syscall_split_args (char *arg) | |
8445 | { | |
8446 | VEC(int) *result = NULL; | |
8447 | struct cleanup *cleanup = make_cleanup (clean_up_filters, &result); | |
8448 | ||
8449 | while (*arg != '\0') | |
8450 | { | |
8451 | int i, syscall_number; | |
8452 | char *endptr; | |
8453 | char cur_name[128]; | |
8454 | struct syscall s; | |
8455 | ||
8456 | /* Skip whitespace. */ | |
8457 | while (isspace (*arg)) | |
8458 | arg++; | |
8459 | ||
8460 | for (i = 0; i < 127 && arg[i] && !isspace (arg[i]); ++i) | |
8461 | cur_name[i] = arg[i]; | |
8462 | cur_name[i] = '\0'; | |
8463 | arg += i; | |
8464 | ||
8465 | /* Check if the user provided a syscall name or a number. */ | |
8466 | syscall_number = (int) strtol (cur_name, &endptr, 0); | |
8467 | if (*endptr == '\0') | |
bccd0dd2 | 8468 | get_syscall_by_number (syscall_number, &s); |
a96d9b2e SDJ |
8469 | else |
8470 | { | |
8471 | /* We have a name. Let's check if it's valid and convert it | |
8472 | to a number. */ | |
8473 | get_syscall_by_name (cur_name, &s); | |
8474 | ||
8475 | if (s.number == UNKNOWN_SYSCALL) | |
8476 | /* Here we have to issue an error instead of a warning, because | |
8477 | GDB cannot do anything useful if there's no syscall number to | |
8478 | be caught. */ | |
8479 | error (_("Unknown syscall name '%s'."), cur_name); | |
8480 | } | |
8481 | ||
8482 | /* Ok, it's valid. */ | |
8483 | VEC_safe_push (int, result, s.number); | |
8484 | } | |
8485 | ||
8486 | discard_cleanups (cleanup); | |
8487 | return result; | |
8488 | } | |
8489 | ||
8490 | /* Implement the "catch syscall" command. */ | |
8491 | ||
8492 | static void | |
8493 | catch_syscall_command_1 (char *arg, int from_tty, struct cmd_list_element *command) | |
8494 | { | |
8495 | int tempflag; | |
8496 | VEC(int) *filter; | |
8497 | struct syscall s; | |
8498 | struct gdbarch *gdbarch = get_current_arch (); | |
8499 | ||
8500 | /* Checking if the feature if supported. */ | |
8501 | if (gdbarch_get_syscall_number_p (gdbarch) == 0) | |
8502 | error (_("The feature 'catch syscall' is not supported on \ | |
8503 | this architeture yet.")); | |
8504 | ||
8505 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8506 | ||
8507 | ep_skip_leading_whitespace (&arg); | |
8508 | ||
8509 | /* We need to do this first "dummy" translation in order | |
8510 | to get the syscall XML file loaded or, most important, | |
8511 | to display a warning to the user if there's no XML file | |
8512 | for his/her architecture. */ | |
8513 | get_syscall_by_number (0, &s); | |
8514 | ||
8515 | /* The allowed syntax is: | |
8516 | catch syscall | |
8517 | catch syscall <name | number> [<name | number> ... <name | number>] | |
8518 | ||
8519 | Let's check if there's a syscall name. */ | |
8520 | ||
8521 | if (arg != NULL) | |
8522 | filter = catch_syscall_split_args (arg); | |
8523 | else | |
8524 | filter = NULL; | |
8525 | ||
8526 | create_syscall_event_catchpoint (tempflag, filter, | |
8527 | &catch_syscall_breakpoint_ops); | |
8528 | } | |
8529 | ||
f7f9143b JB |
8530 | /* Implement the "catch assert" command. */ |
8531 | ||
8532 | static void | |
44feb3ce | 8533 | catch_assert_command (char *arg, int from_tty, struct cmd_list_element *command) |
f7f9143b | 8534 | { |
a6d9a66e | 8535 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 8536 | int tempflag; |
f7f9143b JB |
8537 | struct symtab_and_line sal; |
8538 | char *addr_string = NULL; | |
8539 | struct breakpoint_ops *ops = NULL; | |
8540 | ||
44feb3ce TT |
8541 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
8542 | ||
8543 | if (!arg) | |
8544 | arg = ""; | |
f7f9143b | 8545 | sal = ada_decode_assert_location (arg, &addr_string, &ops); |
a6d9a66e UW |
8546 | create_ada_exception_breakpoint (gdbarch, sal, addr_string, NULL, NULL, NULL, |
8547 | ops, tempflag, from_tty); | |
f7f9143b JB |
8548 | } |
8549 | ||
c906108c | 8550 | static void |
fba45db2 | 8551 | catch_command (char *arg, int from_tty) |
c906108c | 8552 | { |
44feb3ce | 8553 | error (_("Catch requires an event name.")); |
c906108c SS |
8554 | } |
8555 | \f | |
8556 | ||
8557 | static void | |
fba45db2 | 8558 | tcatch_command (char *arg, int from_tty) |
c906108c | 8559 | { |
44feb3ce | 8560 | error (_("Catch requires an event name.")); |
c906108c SS |
8561 | } |
8562 | ||
80f8a6eb | 8563 | /* Delete breakpoints by address or line. */ |
c906108c SS |
8564 | |
8565 | static void | |
fba45db2 | 8566 | clear_command (char *arg, int from_tty) |
c906108c | 8567 | { |
d6e956e5 VP |
8568 | struct breakpoint *b; |
8569 | VEC(breakpoint_p) *found = 0; | |
8570 | int ix; | |
c906108c SS |
8571 | int default_match; |
8572 | struct symtabs_and_lines sals; | |
8573 | struct symtab_and_line sal; | |
c906108c SS |
8574 | int i; |
8575 | ||
8576 | if (arg) | |
8577 | { | |
8578 | sals = decode_line_spec (arg, 1); | |
8579 | default_match = 0; | |
8580 | } | |
8581 | else | |
8582 | { | |
c5aa993b | 8583 | sals.sals = (struct symtab_and_line *) |
c906108c | 8584 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 8585 | make_cleanup (xfree, sals.sals); |
fe39c653 | 8586 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
8587 | sal.line = default_breakpoint_line; |
8588 | sal.symtab = default_breakpoint_symtab; | |
8589 | sal.pc = default_breakpoint_address; | |
6c95b8df | 8590 | sal.pspace = default_breakpoint_pspace; |
c906108c | 8591 | if (sal.symtab == 0) |
8a3fe4f8 | 8592 | error (_("No source file specified.")); |
c906108c SS |
8593 | |
8594 | sals.sals[0] = sal; | |
8595 | sals.nelts = 1; | |
8596 | ||
8597 | default_match = 1; | |
8598 | } | |
8599 | ||
ed0616c6 VP |
8600 | /* We don't call resolve_sal_pc here. That's not |
8601 | as bad as it seems, because all existing breakpoints | |
8602 | typically have both file/line and pc set. So, if | |
8603 | clear is given file/line, we can match this to existing | |
8604 | breakpoint without obtaining pc at all. | |
8605 | ||
8606 | We only support clearing given the address explicitly | |
8607 | present in breakpoint table. Say, we've set breakpoint | |
8608 | at file:line. There were several PC values for that file:line, | |
8609 | due to optimization, all in one block. | |
8610 | We've picked one PC value. If "clear" is issued with another | |
8611 | PC corresponding to the same file:line, the breakpoint won't | |
8612 | be cleared. We probably can still clear the breakpoint, but | |
8613 | since the other PC value is never presented to user, user | |
8614 | can only find it by guessing, and it does not seem important | |
8615 | to support that. */ | |
8616 | ||
c906108c | 8617 | /* For each line spec given, delete bps which correspond |
80f8a6eb MS |
8618 | to it. Do it in two passes, solely to preserve the current |
8619 | behavior that from_tty is forced true if we delete more than | |
8620 | one breakpoint. */ | |
c906108c | 8621 | |
80f8a6eb | 8622 | found = NULL; |
c906108c SS |
8623 | for (i = 0; i < sals.nelts; i++) |
8624 | { | |
8625 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
8626 | If line given (pc == 0), clear all bpts on specified line. |
8627 | If defaulting, clear all bpts on default line | |
c906108c | 8628 | or at default pc. |
c5aa993b JM |
8629 | |
8630 | defaulting sal.pc != 0 tests to do | |
8631 | ||
8632 | 0 1 pc | |
8633 | 1 1 pc _and_ line | |
8634 | 0 0 line | |
8635 | 1 0 <can't happen> */ | |
c906108c SS |
8636 | |
8637 | sal = sals.sals[i]; | |
c906108c | 8638 | |
d6e956e5 VP |
8639 | /* Find all matching breakpoints and add them to |
8640 | 'found'. */ | |
8641 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8642 | { |
0d381245 | 8643 | int match = 0; |
80f8a6eb MS |
8644 | /* Are we going to delete b? */ |
8645 | if (b->type != bp_none | |
8646 | && b->type != bp_watchpoint | |
8647 | && b->type != bp_hardware_watchpoint | |
8648 | && b->type != bp_read_watchpoint | |
0d381245 VP |
8649 | && b->type != bp_access_watchpoint) |
8650 | { | |
8651 | struct bp_location *loc = b->loc; | |
8652 | for (; loc; loc = loc->next) | |
8653 | { | |
6c95b8df PA |
8654 | int pc_match = sal.pc |
8655 | && (loc->pspace == sal.pspace) | |
0d381245 VP |
8656 | && (loc->address == sal.pc) |
8657 | && (!section_is_overlay (loc->section) | |
8658 | || loc->section == sal.section); | |
8659 | int line_match = ((default_match || (0 == sal.pc)) | |
8660 | && b->source_file != NULL | |
8661 | && sal.symtab != NULL | |
6c95b8df | 8662 | && sal.pspace == loc->pspace |
0d381245 VP |
8663 | && strcmp (b->source_file, sal.symtab->filename) == 0 |
8664 | && b->line_number == sal.line); | |
8665 | if (pc_match || line_match) | |
8666 | { | |
8667 | match = 1; | |
8668 | break; | |
8669 | } | |
8670 | } | |
8671 | } | |
8672 | ||
8673 | if (match) | |
d6e956e5 | 8674 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 8675 | } |
80f8a6eb MS |
8676 | } |
8677 | /* Now go thru the 'found' chain and delete them. */ | |
d6e956e5 | 8678 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
8679 | { |
8680 | if (arg) | |
8a3fe4f8 | 8681 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 8682 | else |
8a3fe4f8 | 8683 | error (_("No breakpoint at this line.")); |
80f8a6eb | 8684 | } |
c906108c | 8685 | |
d6e956e5 | 8686 | if (VEC_length(breakpoint_p, found) > 1) |
80f8a6eb MS |
8687 | from_tty = 1; /* Always report if deleted more than one */ |
8688 | if (from_tty) | |
a3f17187 | 8689 | { |
d6e956e5 | 8690 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
8691 | printf_unfiltered (_("Deleted breakpoint ")); |
8692 | else | |
8693 | printf_unfiltered (_("Deleted breakpoints ")); | |
8694 | } | |
80f8a6eb | 8695 | breakpoints_changed (); |
d6e956e5 VP |
8696 | |
8697 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 8698 | { |
c5aa993b | 8699 | if (from_tty) |
d6e956e5 VP |
8700 | printf_unfiltered ("%d ", b->number); |
8701 | delete_breakpoint (b); | |
c906108c | 8702 | } |
80f8a6eb MS |
8703 | if (from_tty) |
8704 | putchar_unfiltered ('\n'); | |
c906108c SS |
8705 | } |
8706 | \f | |
8707 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
8708 | all breakpoints that are marked for deletion, whether hit or not. | |
8709 | This is called after any breakpoint is hit, or after errors. */ | |
8710 | ||
8711 | void | |
fba45db2 | 8712 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
8713 | { |
8714 | struct breakpoint *b, *temp; | |
8715 | ||
8716 | for (; bs; bs = bs->next) | |
20874c92 VP |
8717 | if (bs->breakpoint_at |
8718 | && bs->breakpoint_at->owner | |
8719 | && bs->breakpoint_at->owner->disposition == disp_del | |
c906108c | 8720 | && bs->stop) |
4f8d1dc6 | 8721 | delete_breakpoint (bs->breakpoint_at->owner); |
c906108c SS |
8722 | |
8723 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 8724 | { |
b5de0fa7 | 8725 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
8726 | delete_breakpoint (b); |
8727 | } | |
c906108c SS |
8728 | } |
8729 | ||
494cfb0f | 8730 | /* A comparison function for bp_location AP and BP being interfaced to qsort. |
876fa593 JK |
8731 | Sort elements primarily by their ADDRESS (no matter what does |
8732 | breakpoint_address_is_meaningful say for its OWNER), secondarily by ordering | |
8733 | first bp_permanent OWNERed elements and terciarily just ensuring the array | |
8734 | is sorted stable way despite qsort being an instable algorithm. */ | |
8735 | ||
8736 | static int | |
494cfb0f | 8737 | bp_location_compare (const void *ap, const void *bp) |
876fa593 | 8738 | { |
494cfb0f JK |
8739 | struct bp_location *a = *(void **) ap; |
8740 | struct bp_location *b = *(void **) bp; | |
876fa593 JK |
8741 | int a_perm = a->owner->enable_state == bp_permanent; |
8742 | int b_perm = b->owner->enable_state == bp_permanent; | |
8743 | ||
8744 | if (a->address != b->address) | |
8745 | return (a->address > b->address) - (a->address < b->address); | |
8746 | ||
8747 | /* Sort permanent breakpoints first. */ | |
8748 | if (a_perm != b_perm) | |
8749 | return (a_perm < b_perm) - (a_perm > b_perm); | |
8750 | ||
8751 | /* Make the user-visible order stable across GDB runs. Locations of the same | |
8752 | breakpoint can be sorted in arbitrary order. */ | |
8753 | ||
8754 | if (a->owner->number != b->owner->number) | |
8755 | return (a->owner->number > b->owner->number) | |
8756 | - (a->owner->number < b->owner->number); | |
8757 | ||
8758 | return (a > b) - (a < b); | |
8759 | } | |
8760 | ||
876fa593 JK |
8761 | /* Set bp_location_placed_address_before_address_max and |
8762 | bp_location_shadow_len_after_address_max according to the current content of | |
8763 | the bp_location array. */ | |
f7545552 TT |
8764 | |
8765 | static void | |
876fa593 | 8766 | bp_location_target_extensions_update (void) |
f7545552 | 8767 | { |
876fa593 JK |
8768 | struct bp_location *bl, **blp_tmp; |
8769 | ||
8770 | bp_location_placed_address_before_address_max = 0; | |
8771 | bp_location_shadow_len_after_address_max = 0; | |
8772 | ||
8773 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
8774 | { | |
8775 | CORE_ADDR start, end, addr; | |
8776 | ||
8777 | if (!bp_location_has_shadow (bl)) | |
8778 | continue; | |
8779 | ||
8780 | start = bl->target_info.placed_address; | |
8781 | end = start + bl->target_info.shadow_len; | |
8782 | ||
8783 | gdb_assert (bl->address >= start); | |
8784 | addr = bl->address - start; | |
8785 | if (addr > bp_location_placed_address_before_address_max) | |
8786 | bp_location_placed_address_before_address_max = addr; | |
8787 | ||
8788 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
8789 | ||
8790 | gdb_assert (bl->address < end); | |
8791 | addr = end - bl->address; | |
8792 | if (addr > bp_location_shadow_len_after_address_max) | |
8793 | bp_location_shadow_len_after_address_max = addr; | |
8794 | } | |
f7545552 TT |
8795 | } |
8796 | ||
4cd9bd08 | 8797 | /* If SHOULD_INSERT is false, do not insert any breakpoint locations |
b60e7edf PA |
8798 | into the inferior, only remove already-inserted locations that no |
8799 | longer should be inserted. Functions that delete a breakpoint or | |
8800 | breakpoints should pass false, so that deleting a breakpoint | |
8801 | doesn't have the side effect of inserting the locations of other | |
8802 | breakpoints that are marked not-inserted, but should_be_inserted | |
8803 | returns true on them. | |
8804 | ||
8805 | This behaviour is useful is situations close to tear-down -- e.g., | |
8806 | after an exec, while the target still has execution, but breakpoint | |
8807 | shadows of the previous executable image should *NOT* be restored | |
8808 | to the new image; or before detaching, where the target still has | |
8809 | execution and wants to delete breakpoints from GDB's lists, and all | |
8810 | breakpoints had already been removed from the inferior. */ | |
8811 | ||
0d381245 | 8812 | static void |
b60e7edf | 8813 | update_global_location_list (int should_insert) |
0d381245 | 8814 | { |
74960c60 | 8815 | struct breakpoint *b; |
876fa593 | 8816 | struct bp_location **locp, *loc; |
f7545552 TT |
8817 | struct cleanup *cleanups; |
8818 | ||
2d134ed3 PA |
8819 | /* Used in the duplicates detection below. When iterating over all |
8820 | bp_locations, points to the first bp_location of a given address. | |
8821 | Breakpoints and watchpoints of different types are never | |
8822 | duplicates of each other. Keep one pointer for each type of | |
8823 | breakpoint/watchpoint, so we only need to loop over all locations | |
8824 | once. */ | |
8825 | struct bp_location *bp_loc_first; /* breakpoint */ | |
8826 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
8827 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
8828 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 JK |
8829 | |
8830 | /* Saved former bp_location array which we compare against the newly built | |
8831 | bp_location from the current state of ALL_BREAKPOINTS. */ | |
8832 | struct bp_location **old_location, **old_locp; | |
8833 | unsigned old_location_count; | |
8834 | ||
8835 | old_location = bp_location; | |
8836 | old_location_count = bp_location_count; | |
8837 | bp_location = NULL; | |
8838 | bp_location_count = 0; | |
8839 | cleanups = make_cleanup (xfree, old_location); | |
0d381245 | 8840 | |
74960c60 | 8841 | ALL_BREAKPOINTS (b) |
876fa593 JK |
8842 | for (loc = b->loc; loc; loc = loc->next) |
8843 | bp_location_count++; | |
8844 | ||
8845 | bp_location = xmalloc (sizeof (*bp_location) * bp_location_count); | |
8846 | locp = bp_location; | |
8847 | ALL_BREAKPOINTS (b) | |
8848 | for (loc = b->loc; loc; loc = loc->next) | |
8849 | *locp++ = loc; | |
8850 | qsort (bp_location, bp_location_count, sizeof (*bp_location), | |
494cfb0f | 8851 | bp_location_compare); |
876fa593 JK |
8852 | |
8853 | bp_location_target_extensions_update (); | |
74960c60 VP |
8854 | |
8855 | /* Identify bp_location instances that are no longer present in the new | |
8856 | list, and therefore should be freed. Note that it's not necessary that | |
8857 | those locations should be removed from inferior -- if there's another | |
8858 | location at the same address (previously marked as duplicate), | |
876fa593 JK |
8859 | we don't need to remove/insert the location. |
8860 | ||
8861 | LOCP is kept in sync with OLD_LOCP, each pointing to the current and | |
8862 | former bp_location array state respectively. */ | |
8863 | ||
8864 | locp = bp_location; | |
8865 | for (old_locp = old_location; old_locp < old_location + old_location_count; | |
8866 | old_locp++) | |
74960c60 | 8867 | { |
876fa593 | 8868 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 8869 | struct bp_location **loc2p; |
876fa593 JK |
8870 | |
8871 | /* Tells if 'old_loc' is found amoung the new locations. If not, we | |
74960c60 | 8872 | have to free it. */ |
c7d46a38 | 8873 | int found_object = 0; |
20874c92 VP |
8874 | /* Tells if the location should remain inserted in the target. */ |
8875 | int keep_in_target = 0; | |
8876 | int removed = 0; | |
876fa593 JK |
8877 | |
8878 | /* Skip LOCP entries which will definitely never be needed. Stop either | |
8879 | at or being the one matching OLD_LOC. */ | |
8880 | while (locp < bp_location + bp_location_count | |
c7d46a38 | 8881 | && (*locp)->address < old_loc->address) |
876fa593 | 8882 | locp++; |
c7d46a38 PA |
8883 | |
8884 | for (loc2p = locp; | |
8885 | (loc2p < bp_location + bp_location_count | |
8886 | && (*loc2p)->address == old_loc->address); | |
8887 | loc2p++) | |
8888 | { | |
8889 | if (*loc2p == old_loc) | |
8890 | { | |
8891 | found_object = 1; | |
8892 | break; | |
8893 | } | |
8894 | } | |
74960c60 VP |
8895 | |
8896 | /* If this location is no longer present, and inserted, look if there's | |
8897 | maybe a new location at the same address. If so, mark that one | |
8898 | inserted, and don't remove this one. This is needed so that we | |
8899 | don't have a time window where a breakpoint at certain location is not | |
8900 | inserted. */ | |
8901 | ||
876fa593 | 8902 | if (old_loc->inserted) |
0d381245 | 8903 | { |
74960c60 | 8904 | /* If the location is inserted now, we might have to remove it. */ |
74960c60 | 8905 | |
876fa593 | 8906 | if (found_object && should_be_inserted (old_loc)) |
74960c60 VP |
8907 | { |
8908 | /* The location is still present in the location list, and still | |
8909 | should be inserted. Don't do anything. */ | |
20874c92 | 8910 | keep_in_target = 1; |
74960c60 VP |
8911 | } |
8912 | else | |
8913 | { | |
8914 | /* The location is either no longer present, or got disabled. | |
8915 | See if there's another location at the same address, in which | |
8916 | case we don't need to remove this one from the target. */ | |
876fa593 JK |
8917 | |
8918 | if (breakpoint_address_is_meaningful (old_loc->owner)) | |
8919 | { | |
876fa593 | 8920 | for (loc2p = locp; |
c7d46a38 PA |
8921 | (loc2p < bp_location + bp_location_count |
8922 | && (*loc2p)->address == old_loc->address); | |
876fa593 JK |
8923 | loc2p++) |
8924 | { | |
8925 | struct bp_location *loc2 = *loc2p; | |
8926 | ||
2d134ed3 | 8927 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 PA |
8928 | { |
8929 | /* For the sake of should_be_inserted. | |
8930 | Duplicates check below will fix up this later. */ | |
8931 | loc2->duplicate = 0; | |
85d721b8 PA |
8932 | |
8933 | /* Read watchpoint locations are switched to | |
8934 | access watchpoints, if the former are not | |
8935 | supported, but the latter are. */ | |
8936 | if (is_hardware_watchpoint (old_loc->owner)) | |
8937 | { | |
8938 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
8939 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
8940 | } | |
8941 | ||
c7d46a38 PA |
8942 | if (loc2 != old_loc && should_be_inserted (loc2)) |
8943 | { | |
8944 | loc2->inserted = 1; | |
8945 | loc2->target_info = old_loc->target_info; | |
8946 | keep_in_target = 1; | |
8947 | break; | |
8948 | } | |
876fa593 JK |
8949 | } |
8950 | } | |
8951 | } | |
74960c60 VP |
8952 | } |
8953 | ||
20874c92 VP |
8954 | if (!keep_in_target) |
8955 | { | |
876fa593 | 8956 | if (remove_breakpoint (old_loc, mark_uninserted)) |
20874c92 VP |
8957 | { |
8958 | /* This is just about all we can do. We could keep this | |
8959 | location on the global list, and try to remove it next | |
8960 | time, but there's no particular reason why we will | |
8961 | succeed next time. | |
8962 | ||
876fa593 | 8963 | Note that at this point, old_loc->owner is still valid, |
20874c92 VP |
8964 | as delete_breakpoint frees the breakpoint only |
8965 | after calling us. */ | |
8966 | printf_filtered (_("warning: Error removing breakpoint %d\n"), | |
876fa593 | 8967 | old_loc->owner->number); |
20874c92 VP |
8968 | } |
8969 | removed = 1; | |
8970 | } | |
0d381245 | 8971 | } |
74960c60 VP |
8972 | |
8973 | if (!found_object) | |
1c5cfe86 | 8974 | { |
db82e815 PA |
8975 | if (removed && non_stop |
8976 | && breakpoint_address_is_meaningful (old_loc->owner) | |
8977 | && !is_hardware_watchpoint (old_loc->owner)) | |
20874c92 | 8978 | { |
db82e815 PA |
8979 | /* This location was removed from the target. In |
8980 | non-stop mode, a race condition is possible where | |
8981 | we've removed a breakpoint, but stop events for that | |
8982 | breakpoint are already queued and will arrive later. | |
8983 | We apply an heuristic to be able to distinguish such | |
8984 | SIGTRAPs from other random SIGTRAPs: we keep this | |
8985 | breakpoint location for a bit, and will retire it | |
8986 | after we see some number of events. The theory here | |
8987 | is that reporting of events should, "on the average", | |
8988 | be fair, so after a while we'll see events from all | |
8989 | threads that have anything of interest, and no longer | |
8990 | need to keep this breakpoint location around. We | |
8991 | don't hold locations forever so to reduce chances of | |
8992 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
8993 | SIGTRAP. | |
8994 | ||
8995 | The heuristic failing can be disastrous on | |
8996 | decr_pc_after_break targets. | |
8997 | ||
8998 | On decr_pc_after_break targets, like e.g., x86-linux, | |
8999 | if we fail to recognize a late breakpoint SIGTRAP, | |
9000 | because events_till_retirement has reached 0 too | |
9001 | soon, we'll fail to do the PC adjustment, and report | |
9002 | a random SIGTRAP to the user. When the user resumes | |
9003 | the inferior, it will most likely immediately crash | |
9004 | with SIGILL/SIGBUS/SEGSEGV, or worse, get silently | |
9005 | corrupted, because of being resumed e.g., in the | |
9006 | middle of a multi-byte instruction, or skipped a | |
9007 | one-byte instruction. This was actually seen happen | |
9008 | on native x86-linux, and should be less rare on | |
9009 | targets that do not support new thread events, like | |
9010 | remote, due to the heuristic depending on | |
9011 | thread_count. | |
9012 | ||
9013 | Mistaking a random SIGTRAP for a breakpoint trap | |
9014 | causes similar symptoms (PC adjustment applied when | |
9015 | it shouldn't), but then again, playing with SIGTRAPs | |
9016 | behind the debugger's back is asking for trouble. | |
9017 | ||
9018 | Since hardware watchpoint traps are always | |
9019 | distinguishable from other traps, so we don't need to | |
9020 | apply keep hardware watchpoint moribund locations | |
9021 | around. We simply always ignore hardware watchpoint | |
9022 | traps we can no longer explain. */ | |
9023 | ||
876fa593 JK |
9024 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
9025 | old_loc->owner = NULL; | |
20874c92 | 9026 | |
876fa593 | 9027 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
9028 | } |
9029 | else | |
876fa593 | 9030 | free_bp_location (old_loc); |
20874c92 | 9031 | } |
74960c60 | 9032 | } |
1c5cfe86 | 9033 | |
2d134ed3 PA |
9034 | /* Rescan breakpoints at the same address and section, marking the |
9035 | first one as "first" and any others as "duplicates". This is so | |
9036 | that the bpt instruction is only inserted once. If we have a | |
9037 | permanent breakpoint at the same place as BPT, make that one the | |
9038 | official one, and the rest as duplicates. Permanent breakpoints | |
9039 | are sorted first for the same address. | |
9040 | ||
9041 | Do the same for hardware watchpoints, but also considering the | |
9042 | watchpoint's type (regular/access/read) and length. */ | |
876fa593 | 9043 | |
2d134ed3 PA |
9044 | bp_loc_first = NULL; |
9045 | wp_loc_first = NULL; | |
9046 | awp_loc_first = NULL; | |
9047 | rwp_loc_first = NULL; | |
876fa593 | 9048 | ALL_BP_LOCATIONS (loc, locp) |
74960c60 | 9049 | { |
876fa593 | 9050 | struct breakpoint *b = loc->owner; |
2d134ed3 | 9051 | struct bp_location **loc_first_p; |
876fa593 JK |
9052 | |
9053 | if (b->enable_state == bp_disabled | |
9054 | || b->enable_state == bp_call_disabled | |
9055 | || b->enable_state == bp_startup_disabled | |
9056 | || !loc->enabled | |
9057 | || loc->shlib_disabled | |
15c3d785 PA |
9058 | || !breakpoint_address_is_meaningful (b) |
9059 | || tracepoint_type (b)) | |
876fa593 JK |
9060 | continue; |
9061 | ||
9062 | /* Permanent breakpoint should always be inserted. */ | |
9063 | if (b->enable_state == bp_permanent && ! loc->inserted) | |
9064 | internal_error (__FILE__, __LINE__, | |
9065 | _("allegedly permanent breakpoint is not " | |
9066 | "actually inserted")); | |
9067 | ||
2d134ed3 PA |
9068 | if (b->type == bp_hardware_watchpoint) |
9069 | loc_first_p = &wp_loc_first; | |
9070 | else if (b->type == bp_read_watchpoint) | |
9071 | loc_first_p = &rwp_loc_first; | |
9072 | else if (b->type == bp_access_watchpoint) | |
9073 | loc_first_p = &awp_loc_first; | |
9074 | else | |
9075 | loc_first_p = &bp_loc_first; | |
9076 | ||
9077 | if (*loc_first_p == NULL | |
9078 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
9079 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
876fa593 | 9080 | { |
2d134ed3 | 9081 | *loc_first_p = loc; |
876fa593 JK |
9082 | loc->duplicate = 0; |
9083 | continue; | |
9084 | } | |
9085 | ||
9086 | loc->duplicate = 1; | |
9087 | ||
2d134ed3 PA |
9088 | if ((*loc_first_p)->owner->enable_state == bp_permanent && loc->inserted |
9089 | && b->enable_state != bp_permanent) | |
876fa593 JK |
9090 | internal_error (__FILE__, __LINE__, |
9091 | _("another breakpoint was inserted on top of " | |
9092 | "a permanent breakpoint")); | |
0d381245 | 9093 | } |
74960c60 | 9094 | |
50c71eaf | 9095 | if (breakpoints_always_inserted_mode () && should_insert |
c35b1492 | 9096 | && (have_live_inferiors () |
2567c7d9 | 9097 | || (gdbarch_has_global_breakpoints (target_gdbarch)))) |
74960c60 | 9098 | insert_breakpoint_locations (); |
f7545552 TT |
9099 | |
9100 | do_cleanups (cleanups); | |
74960c60 VP |
9101 | } |
9102 | ||
20874c92 VP |
9103 | void |
9104 | breakpoint_retire_moribund (void) | |
9105 | { | |
9106 | struct bp_location *loc; | |
9107 | int ix; | |
9108 | ||
9109 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
9110 | if (--(loc->events_till_retirement) == 0) | |
9111 | { | |
9112 | free_bp_location (loc); | |
9113 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
9114 | --ix; | |
9115 | } | |
9116 | } | |
9117 | ||
74960c60 | 9118 | static void |
b60e7edf | 9119 | update_global_location_list_nothrow (int inserting) |
74960c60 VP |
9120 | { |
9121 | struct gdb_exception e; | |
9122 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
b60e7edf | 9123 | update_global_location_list (inserting); |
0d381245 VP |
9124 | } |
9125 | ||
a474d7c2 PA |
9126 | /* Clear BPT from a BPS. */ |
9127 | static void | |
9128 | bpstat_remove_breakpoint (bpstat bps, struct breakpoint *bpt) | |
9129 | { | |
9130 | bpstat bs; | |
9131 | for (bs = bps; bs; bs = bs->next) | |
9132 | if (bs->breakpoint_at && bs->breakpoint_at->owner == bpt) | |
9133 | { | |
9134 | bs->breakpoint_at = NULL; | |
9135 | bs->old_val = NULL; | |
9136 | /* bs->commands will be freed later. */ | |
9137 | } | |
9138 | } | |
9139 | ||
9140 | /* Callback for iterate_over_threads. */ | |
9141 | static int | |
9142 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
9143 | { | |
9144 | struct breakpoint *bpt = data; | |
9145 | bpstat_remove_breakpoint (th->stop_bpstat, bpt); | |
9146 | return 0; | |
9147 | } | |
9148 | ||
53a5351d JM |
9149 | /* Delete a breakpoint and clean up all traces of it in the data |
9150 | structures. */ | |
c906108c SS |
9151 | |
9152 | void | |
fba45db2 | 9153 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 9154 | { |
52f0bd74 | 9155 | struct breakpoint *b; |
74960c60 | 9156 | struct bp_location *loc, *next; |
c906108c | 9157 | |
8a3fe4f8 | 9158 | gdb_assert (bpt != NULL); |
c906108c SS |
9159 | |
9160 | /* Has this bp already been deleted? This can happen because multiple | |
9161 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
9162 | ||
9163 | One example of this happening is a watchpoint's scope bp. When the | |
9164 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
9165 | delete it. We also delete its scope bp. But the scope bp is marked | |
9166 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
9167 | checked for auto-deleting bp's, which are deleted. | |
9168 | ||
9169 | A real solution to this problem might involve reference counts in bp's, | |
9170 | and/or giving them pointers back to their referencing bpstat's, and | |
9171 | teaching delete_breakpoint to only free a bp's storage when no more | |
1272ad14 | 9172 | references were extent. A cheaper bandaid was chosen. */ |
c906108c SS |
9173 | if (bpt->type == bp_none) |
9174 | return; | |
9175 | ||
e5a0a904 JK |
9176 | /* At least avoid this stale reference until the reference counting of |
9177 | breakpoints gets resolved. */ | |
9178 | if (bpt->related_breakpoint != NULL) | |
9179 | { | |
9180 | gdb_assert (bpt->related_breakpoint->related_breakpoint == bpt); | |
9181 | bpt->related_breakpoint->disposition = disp_del_at_next_stop; | |
9182 | bpt->related_breakpoint->related_breakpoint = NULL; | |
9183 | bpt->related_breakpoint = NULL; | |
9184 | } | |
9185 | ||
383f836e | 9186 | observer_notify_breakpoint_deleted (bpt->number); |
c906108c | 9187 | |
c906108c SS |
9188 | if (breakpoint_chain == bpt) |
9189 | breakpoint_chain = bpt->next; | |
9190 | ||
c906108c SS |
9191 | ALL_BREAKPOINTS (b) |
9192 | if (b->next == bpt) | |
c5aa993b JM |
9193 | { |
9194 | b->next = bpt->next; | |
9195 | break; | |
9196 | } | |
c906108c | 9197 | |
9add0f1b | 9198 | decref_counted_command_line (&bpt->commands); |
60e1c644 PA |
9199 | xfree (bpt->cond_string); |
9200 | xfree (bpt->cond_exp); | |
9201 | xfree (bpt->addr_string); | |
9202 | xfree (bpt->exp); | |
9203 | xfree (bpt->exp_string); | |
9204 | value_free (bpt->val); | |
9205 | xfree (bpt->source_file); | |
9206 | xfree (bpt->exec_pathname); | |
a96d9b2e | 9207 | clean_up_filters (&bpt->syscalls_to_be_caught); |
c906108c SS |
9208 | |
9209 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
9210 | /* FIXME, how can we find all bpstat's? | |
198757a8 VP |
9211 | We just check stop_bpstat for now. Note that we cannot just |
9212 | remove bpstats pointing at bpt from the stop_bpstat list | |
9213 | entirely, as breakpoint commands are associated with the bpstat; | |
9214 | if we remove it here, then the later call to | |
9215 | bpstat_do_actions (&stop_bpstat); | |
9216 | in event-top.c won't do anything, and temporary breakpoints | |
9217 | with commands won't work. */ | |
a474d7c2 | 9218 | |
a474d7c2 | 9219 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); |
74960c60 VP |
9220 | |
9221 | /* Now that breakpoint is removed from breakpoint | |
9222 | list, update the global location list. This | |
9223 | will remove locations that used to belong to | |
9224 | this breakpoint. Do this before freeing | |
9225 | the breakpoint itself, since remove_breakpoint | |
9226 | looks at location's owner. It might be better | |
9227 | design to have location completely self-contained, | |
9228 | but it's not the case now. */ | |
b60e7edf | 9229 | update_global_location_list (0); |
74960c60 VP |
9230 | |
9231 | ||
c906108c SS |
9232 | /* On the chance that someone will soon try again to delete this same |
9233 | bp, we mark it as deleted before freeing its storage. */ | |
9234 | bpt->type = bp_none; | |
9235 | ||
b8c9b27d | 9236 | xfree (bpt); |
c906108c SS |
9237 | } |
9238 | ||
4d6140d9 AC |
9239 | static void |
9240 | do_delete_breakpoint_cleanup (void *b) | |
9241 | { | |
9242 | delete_breakpoint (b); | |
9243 | } | |
9244 | ||
9245 | struct cleanup * | |
9246 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
9247 | { | |
9248 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
9249 | } | |
9250 | ||
95a42b64 TT |
9251 | /* A callback for map_breakpoint_numbers that calls |
9252 | delete_breakpoint. */ | |
9253 | ||
9254 | static void | |
9255 | do_delete_breakpoint (struct breakpoint *b, void *ignore) | |
9256 | { | |
9257 | delete_breakpoint (b); | |
9258 | } | |
9259 | ||
c906108c | 9260 | void |
fba45db2 | 9261 | delete_command (char *arg, int from_tty) |
c906108c SS |
9262 | { |
9263 | struct breakpoint *b, *temp; | |
9264 | ||
ea9365bb TT |
9265 | dont_repeat (); |
9266 | ||
c906108c SS |
9267 | if (arg == 0) |
9268 | { | |
9269 | int breaks_to_delete = 0; | |
9270 | ||
9271 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
9272 | Do not delete internal or call-dummy breakpoints, these |
9273 | have to be deleted with an explicit breakpoint number argument. */ | |
9274 | ALL_BREAKPOINTS (b) | |
9275 | { | |
059fb39f | 9276 | if (b->type != bp_call_dummy |
aa7d318d | 9277 | && b->type != bp_std_terminate |
059fb39f | 9278 | && b->type != bp_shlib_event |
4efc6507 | 9279 | && b->type != bp_jit_event |
059fb39f PM |
9280 | && b->type != bp_thread_event |
9281 | && b->type != bp_overlay_event | |
0fd8e87f | 9282 | && b->type != bp_longjmp_master |
aa7d318d | 9283 | && b->type != bp_std_terminate_master |
059fb39f | 9284 | && b->number >= 0) |
973d738b DJ |
9285 | { |
9286 | breaks_to_delete = 1; | |
9287 | break; | |
9288 | } | |
c5aa993b | 9289 | } |
c906108c SS |
9290 | |
9291 | /* Ask user only if there are some breakpoints to delete. */ | |
9292 | if (!from_tty | |
e2e0b3e5 | 9293 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 9294 | { |
c5aa993b JM |
9295 | ALL_BREAKPOINTS_SAFE (b, temp) |
9296 | { | |
059fb39f | 9297 | if (b->type != bp_call_dummy |
aa7d318d | 9298 | && b->type != bp_std_terminate |
059fb39f PM |
9299 | && b->type != bp_shlib_event |
9300 | && b->type != bp_thread_event | |
4efc6507 | 9301 | && b->type != bp_jit_event |
059fb39f | 9302 | && b->type != bp_overlay_event |
0fd8e87f | 9303 | && b->type != bp_longjmp_master |
aa7d318d | 9304 | && b->type != bp_std_terminate_master |
059fb39f | 9305 | && b->number >= 0) |
c5aa993b JM |
9306 | delete_breakpoint (b); |
9307 | } | |
c906108c SS |
9308 | } |
9309 | } | |
9310 | else | |
95a42b64 | 9311 | map_breakpoint_numbers (arg, do_delete_breakpoint, NULL); |
c906108c SS |
9312 | } |
9313 | ||
0d381245 VP |
9314 | static int |
9315 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 9316 | { |
0d381245 VP |
9317 | for (; loc; loc = loc->next) |
9318 | if (!loc->shlib_disabled) | |
9319 | return 0; | |
9320 | return 1; | |
fe3f5fa8 VP |
9321 | } |
9322 | ||
776592bf DE |
9323 | /* Subroutine of update_breakpoint_locations to simplify it. |
9324 | Return non-zero if multiple fns in list LOC have the same name. | |
9325 | Null names are ignored. */ | |
9326 | ||
9327 | static int | |
9328 | ambiguous_names_p (struct bp_location *loc) | |
9329 | { | |
9330 | struct bp_location *l; | |
9331 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
9332 | (int (*) (const void *, const void *)) streq, | |
9333 | NULL, xcalloc, xfree); | |
9334 | ||
9335 | for (l = loc; l != NULL; l = l->next) | |
9336 | { | |
9337 | const char **slot; | |
9338 | const char *name = l->function_name; | |
9339 | ||
9340 | /* Allow for some names to be NULL, ignore them. */ | |
9341 | if (name == NULL) | |
9342 | continue; | |
9343 | ||
9344 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
9345 | INSERT); | |
9346 | /* NOTE: We can assume slot != NULL here because xcalloc never returns | |
9347 | NULL. */ | |
9348 | if (*slot != NULL) | |
9349 | { | |
9350 | htab_delete (htab); | |
9351 | return 1; | |
9352 | } | |
9353 | *slot = name; | |
9354 | } | |
9355 | ||
9356 | htab_delete (htab); | |
9357 | return 0; | |
9358 | } | |
9359 | ||
fe3f5fa8 | 9360 | static void |
0d381245 VP |
9361 | update_breakpoint_locations (struct breakpoint *b, |
9362 | struct symtabs_and_lines sals) | |
fe3f5fa8 VP |
9363 | { |
9364 | int i; | |
9365 | char *s; | |
0d381245 VP |
9366 | struct bp_location *existing_locations = b->loc; |
9367 | ||
9368 | /* If there's no new locations, and all existing locations | |
9369 | are pending, don't do anything. This optimizes | |
9370 | the common case where all locations are in the same | |
9371 | shared library, that was unloaded. We'd like to | |
9372 | retain the location, so that when the library | |
9373 | is loaded again, we don't loose the enabled/disabled | |
9374 | status of the individual locations. */ | |
9375 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) | |
fe3f5fa8 VP |
9376 | return; |
9377 | ||
fe3f5fa8 VP |
9378 | b->loc = NULL; |
9379 | ||
0d381245 | 9380 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 9381 | { |
0d381245 | 9382 | struct bp_location *new_loc = |
39d61571 | 9383 | add_location_to_breakpoint (b, &(sals.sals[i])); |
fe3f5fa8 | 9384 | |
0d381245 VP |
9385 | /* Reparse conditions, they might contain references to the |
9386 | old symtab. */ | |
9387 | if (b->cond_string != NULL) | |
9388 | { | |
9389 | struct gdb_exception e; | |
fe3f5fa8 | 9390 | |
0d381245 VP |
9391 | s = b->cond_string; |
9392 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
9393 | { | |
9394 | new_loc->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), | |
9395 | 0); | |
9396 | } | |
9397 | if (e.reason < 0) | |
9398 | { | |
9399 | warning (_("failed to reevaluate condition for breakpoint %d: %s"), | |
9400 | b->number, e.message); | |
9401 | new_loc->enabled = 0; | |
9402 | } | |
9403 | } | |
fe3f5fa8 | 9404 | |
0d381245 VP |
9405 | if (b->source_file != NULL) |
9406 | xfree (b->source_file); | |
9407 | if (sals.sals[i].symtab == NULL) | |
9408 | b->source_file = NULL; | |
9409 | else | |
1b36a34b | 9410 | b->source_file = xstrdup (sals.sals[i].symtab->filename); |
fe3f5fa8 | 9411 | |
0d381245 VP |
9412 | if (b->line_number == 0) |
9413 | b->line_number = sals.sals[i].line; | |
9414 | } | |
fe3f5fa8 | 9415 | |
514f746b AR |
9416 | /* Update locations of permanent breakpoints. */ |
9417 | if (b->enable_state == bp_permanent) | |
9418 | make_breakpoint_permanent (b); | |
9419 | ||
0d381245 VP |
9420 | /* If possible, carry over 'disable' status from existing breakpoints. */ |
9421 | { | |
9422 | struct bp_location *e = existing_locations; | |
776592bf DE |
9423 | /* If there are multiple breakpoints with the same function name, |
9424 | e.g. for inline functions, comparing function names won't work. | |
9425 | Instead compare pc addresses; this is just a heuristic as things | |
9426 | may have moved, but in practice it gives the correct answer | |
9427 | often enough until a better solution is found. */ | |
9428 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
9429 | ||
0d381245 VP |
9430 | for (; e; e = e->next) |
9431 | { | |
9432 | if (!e->enabled && e->function_name) | |
9433 | { | |
9434 | struct bp_location *l = b->loc; | |
776592bf DE |
9435 | if (have_ambiguous_names) |
9436 | { | |
9437 | for (; l; l = l->next) | |
6c95b8df PA |
9438 | if (breakpoint_address_match (e->pspace->aspace, e->address, |
9439 | l->pspace->aspace, l->address)) | |
776592bf DE |
9440 | { |
9441 | l->enabled = 0; | |
9442 | break; | |
9443 | } | |
9444 | } | |
9445 | else | |
9446 | { | |
9447 | for (; l; l = l->next) | |
9448 | if (l->function_name | |
9449 | && strcmp (e->function_name, l->function_name) == 0) | |
9450 | { | |
9451 | l->enabled = 0; | |
9452 | break; | |
9453 | } | |
9454 | } | |
0d381245 VP |
9455 | } |
9456 | } | |
9457 | } | |
fe3f5fa8 | 9458 | |
b60e7edf | 9459 | update_global_location_list (1); |
fe3f5fa8 VP |
9460 | } |
9461 | ||
9462 | ||
c906108c SS |
9463 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
9464 | The value we return ends up being the return value from catch_errors. | |
9465 | Unused in this case. */ | |
9466 | ||
9467 | static int | |
4efb68b1 | 9468 | breakpoint_re_set_one (void *bint) |
c906108c | 9469 | { |
53a5351d JM |
9470 | /* get past catch_errs */ |
9471 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
9472 | struct value *mark; |
9473 | int i; | |
fe3f5fa8 VP |
9474 | int not_found = 0; |
9475 | int *not_found_ptr = ¬_found; | |
6c95b8df PA |
9476 | struct symtabs_and_lines sals = {0}; |
9477 | struct symtabs_and_lines expanded = {0}; | |
c906108c | 9478 | char *s; |
b5de0fa7 | 9479 | enum enable_state save_enable; |
fe3f5fa8 | 9480 | struct gdb_exception e; |
6c95b8df | 9481 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); |
c906108c SS |
9482 | |
9483 | switch (b->type) | |
9484 | { | |
9485 | case bp_none: | |
8a3fe4f8 | 9486 | warning (_("attempted to reset apparently deleted breakpoint #%d?"), |
53a5351d | 9487 | b->number); |
c906108c SS |
9488 | return 0; |
9489 | case bp_breakpoint: | |
9490 | case bp_hardware_breakpoint: | |
1042e4c0 | 9491 | case bp_tracepoint: |
7a697b8d | 9492 | case bp_fast_tracepoint: |
8bea4e01 UW |
9493 | /* Do not attempt to re-set breakpoints disabled during startup. */ |
9494 | if (b->enable_state == bp_startup_disabled) | |
9495 | return 0; | |
9496 | ||
c906108c SS |
9497 | if (b->addr_string == NULL) |
9498 | { | |
9499 | /* Anything without a string can't be re-set. */ | |
9500 | delete_breakpoint (b); | |
9501 | return 0; | |
9502 | } | |
c906108c SS |
9503 | |
9504 | set_language (b->language); | |
9505 | input_radix = b->input_radix; | |
9506 | s = b->addr_string; | |
6c95b8df PA |
9507 | |
9508 | save_current_space_and_thread (); | |
9509 | switch_to_program_space_and_thread (b->pspace); | |
9510 | ||
fe3f5fa8 | 9511 | TRY_CATCH (e, RETURN_MASK_ERROR) |
c906108c | 9512 | { |
fe3f5fa8 VP |
9513 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, |
9514 | not_found_ptr); | |
9515 | } | |
9516 | if (e.reason < 0) | |
9517 | { | |
9518 | int not_found_and_ok = 0; | |
9519 | /* For pending breakpoints, it's expected that parsing | |
9520 | will fail until the right shared library is loaded. | |
9521 | User has already told to create pending breakpoints and | |
9522 | don't need extra messages. If breakpoint is in bp_shlib_disabled | |
9523 | state, then user already saw the message about that breakpoint | |
9524 | being disabled, and don't want to see more errors. */ | |
0d381245 VP |
9525 | if (not_found |
9526 | && (b->condition_not_parsed | |
9527 | || (b->loc && b->loc->shlib_disabled) | |
9528 | || b->enable_state == bp_disabled)) | |
fe3f5fa8 VP |
9529 | not_found_and_ok = 1; |
9530 | ||
9531 | if (!not_found_and_ok) | |
c906108c | 9532 | { |
fe3f5fa8 VP |
9533 | /* We surely don't want to warn about the same breakpoint |
9534 | 10 times. One solution, implemented here, is disable | |
9535 | the breakpoint on error. Another solution would be to | |
9536 | have separate 'warning emitted' flag. Since this | |
9537 | happens only when a binary has changed, I don't know | |
9538 | which approach is better. */ | |
9539 | b->enable_state = bp_disabled; | |
9540 | throw_exception (e); | |
c906108c | 9541 | } |
fe3f5fa8 | 9542 | } |
c906108c | 9543 | |
6c95b8df | 9544 | if (!not_found) |
fe3f5fa8 | 9545 | { |
6c95b8df PA |
9546 | gdb_assert (sals.nelts == 1); |
9547 | ||
9548 | resolve_sal_pc (&sals.sals[0]); | |
9549 | if (b->condition_not_parsed && s && s[0]) | |
9550 | { | |
9551 | char *cond_string = 0; | |
9552 | int thread = -1; | |
9553 | int task = 0; | |
9554 | ||
9555 | find_condition_and_thread (s, sals.sals[0].pc, | |
9556 | &cond_string, &thread, &task); | |
9557 | if (cond_string) | |
9558 | b->cond_string = cond_string; | |
9559 | b->thread = thread; | |
9560 | b->task = task; | |
9561 | b->condition_not_parsed = 0; | |
9562 | } | |
9563 | ||
9564 | expanded = expand_line_sal_maybe (sals.sals[0]); | |
fe3f5fa8 | 9565 | } |
6c95b8df PA |
9566 | |
9567 | make_cleanup (xfree, sals.sals); | |
ed0616c6 | 9568 | update_breakpoint_locations (b, expanded); |
c906108c SS |
9569 | break; |
9570 | ||
9571 | case bp_watchpoint: | |
9572 | case bp_hardware_watchpoint: | |
9573 | case bp_read_watchpoint: | |
9574 | case bp_access_watchpoint: | |
0b3de036 VP |
9575 | /* Watchpoint can be either on expression using entirely global variables, |
9576 | or it can be on local variables. | |
9577 | ||
9578 | Watchpoints of the first kind are never auto-deleted, and even persist | |
9579 | across program restarts. Since they can use variables from shared | |
9580 | libraries, we need to reparse expression as libraries are loaded | |
9581 | and unloaded. | |
9582 | ||
9583 | Watchpoints on local variables can also change meaning as result | |
9584 | of solib event. For example, if a watchpoint uses both a local and | |
9585 | a global variables in expression, it's a local watchpoint, but | |
9586 | unloading of a shared library will make the expression invalid. | |
9587 | This is not a very common use case, but we still re-evaluate | |
9588 | expression, to avoid surprises to the user. | |
9589 | ||
9590 | Note that for local watchpoints, we re-evaluate it only if | |
9591 | watchpoints frame id is still valid. If it's not, it means | |
9592 | the watchpoint is out of scope and will be deleted soon. In fact, | |
9593 | I'm not sure we'll ever be called in this case. | |
9594 | ||
9595 | If a local watchpoint's frame id is still valid, then | |
9596 | b->exp_valid_block is likewise valid, and we can safely use it. | |
9597 | ||
9598 | Don't do anything about disabled watchpoints, since they will | |
9599 | be reevaluated again when enabled. */ | |
a5606eee | 9600 | update_watchpoint (b, 1 /* reparse */); |
c906108c | 9601 | break; |
c5aa993b JM |
9602 | /* We needn't really do anything to reset these, since the mask |
9603 | that requests them is unaffected by e.g., new libraries being | |
9604 | loaded. */ | |
ce78b96d | 9605 | case bp_catchpoint: |
c906108c | 9606 | break; |
c5aa993b | 9607 | |
c906108c | 9608 | default: |
a3f17187 | 9609 | printf_filtered (_("Deleting unknown breakpoint type %d\n"), b->type); |
c906108c | 9610 | /* fall through */ |
0fd8e87f UW |
9611 | /* Delete overlay event and longjmp master breakpoints; they will be |
9612 | reset later by breakpoint_re_set. */ | |
1900040c | 9613 | case bp_overlay_event: |
0fd8e87f | 9614 | case bp_longjmp_master: |
aa7d318d | 9615 | case bp_std_terminate_master: |
c906108c SS |
9616 | delete_breakpoint (b); |
9617 | break; | |
9618 | ||
c5aa993b JM |
9619 | /* This breakpoint is special, it's set up when the inferior |
9620 | starts and we really don't want to touch it. */ | |
c906108c SS |
9621 | case bp_shlib_event: |
9622 | ||
c4093a6a JM |
9623 | /* Like bp_shlib_event, this breakpoint type is special. |
9624 | Once it is set up, we do not want to touch it. */ | |
9625 | case bp_thread_event: | |
9626 | ||
c5aa993b JM |
9627 | /* Keep temporary breakpoints, which can be encountered when we step |
9628 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
9629 | Otherwise these should have been blown away via the cleanup chain | |
9630 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
9631 | case bp_until: |
9632 | case bp_finish: | |
9633 | case bp_watchpoint_scope: | |
9634 | case bp_call_dummy: | |
aa7d318d | 9635 | case bp_std_terminate: |
c906108c | 9636 | case bp_step_resume: |
611c83ae PA |
9637 | case bp_longjmp: |
9638 | case bp_longjmp_resume: | |
4efc6507 | 9639 | case bp_jit_event: |
c906108c SS |
9640 | break; |
9641 | } | |
9642 | ||
6c95b8df | 9643 | do_cleanups (cleanups); |
c906108c SS |
9644 | return 0; |
9645 | } | |
9646 | ||
69de3c6a | 9647 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 9648 | void |
69de3c6a | 9649 | breakpoint_re_set (void) |
c906108c SS |
9650 | { |
9651 | struct breakpoint *b, *temp; | |
9652 | enum language save_language; | |
9653 | int save_input_radix; | |
6c95b8df | 9654 | struct cleanup *old_chain; |
c5aa993b | 9655 | |
c906108c SS |
9656 | save_language = current_language->la_language; |
9657 | save_input_radix = input_radix; | |
6c95b8df PA |
9658 | old_chain = save_current_program_space (); |
9659 | ||
c906108c | 9660 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 9661 | { |
53a5351d | 9662 | /* Format possible error msg */ |
fe3f5fa8 | 9663 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
9664 | b->number); |
9665 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 9666 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 9667 | do_cleanups (cleanups); |
c5aa993b | 9668 | } |
c906108c SS |
9669 | set_language (save_language); |
9670 | input_radix = save_input_radix; | |
e62c965a | 9671 | |
0756c555 | 9672 | jit_breakpoint_re_set (); |
4efc6507 | 9673 | |
6c95b8df PA |
9674 | do_cleanups (old_chain); |
9675 | ||
69de3c6a | 9676 | create_overlay_event_breakpoint ("_ovly_debug_event"); |
0fd8e87f UW |
9677 | create_longjmp_master_breakpoint ("longjmp"); |
9678 | create_longjmp_master_breakpoint ("_longjmp"); | |
9679 | create_longjmp_master_breakpoint ("siglongjmp"); | |
9680 | create_longjmp_master_breakpoint ("_siglongjmp"); | |
aa7d318d | 9681 | create_std_terminate_master_breakpoint ("std::terminate()"); |
c906108c SS |
9682 | } |
9683 | \f | |
c906108c SS |
9684 | /* Reset the thread number of this breakpoint: |
9685 | ||
9686 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 9687 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 9688 | void |
fba45db2 | 9689 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
9690 | { |
9691 | if (b->thread != -1) | |
9692 | { | |
39f77062 KB |
9693 | if (in_thread_list (inferior_ptid)) |
9694 | b->thread = pid_to_thread_id (inferior_ptid); | |
6c95b8df PA |
9695 | |
9696 | /* We're being called after following a fork. The new fork is | |
9697 | selected as current, and unless this was a vfork will have a | |
9698 | different program space from the original thread. Reset that | |
9699 | as well. */ | |
9700 | b->loc->pspace = current_program_space; | |
c906108c SS |
9701 | } |
9702 | } | |
9703 | ||
03ac34d5 MS |
9704 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
9705 | If from_tty is nonzero, it prints a message to that effect, | |
9706 | which ends with a period (no newline). */ | |
9707 | ||
c906108c | 9708 | void |
fba45db2 | 9709 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 9710 | { |
52f0bd74 | 9711 | struct breakpoint *b; |
c906108c SS |
9712 | |
9713 | if (count < 0) | |
9714 | count = 0; | |
9715 | ||
9716 | ALL_BREAKPOINTS (b) | |
9717 | if (b->number == bptnum) | |
c5aa993b JM |
9718 | { |
9719 | b->ignore_count = count; | |
221ea385 KS |
9720 | if (from_tty) |
9721 | { | |
9722 | if (count == 0) | |
a3f17187 | 9723 | printf_filtered (_("Will stop next time breakpoint %d is reached."), |
221ea385 KS |
9724 | bptnum); |
9725 | else if (count == 1) | |
a3f17187 | 9726 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
9727 | bptnum); |
9728 | else | |
a3f17187 | 9729 | printf_filtered (_("Will ignore next %d crossings of breakpoint %d."), |
221ea385 KS |
9730 | count, bptnum); |
9731 | } | |
c5aa993b | 9732 | breakpoints_changed (); |
383f836e | 9733 | observer_notify_breakpoint_modified (b->number); |
c5aa993b JM |
9734 | return; |
9735 | } | |
c906108c | 9736 | |
8a3fe4f8 | 9737 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
9738 | } |
9739 | ||
b2175913 MS |
9740 | void |
9741 | make_breakpoint_silent (struct breakpoint *b) | |
9742 | { | |
9743 | /* Silence the breakpoint. */ | |
9744 | b->silent = 1; | |
9745 | } | |
9746 | ||
c906108c SS |
9747 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
9748 | ||
9749 | static void | |
fba45db2 | 9750 | ignore_command (char *args, int from_tty) |
c906108c SS |
9751 | { |
9752 | char *p = args; | |
52f0bd74 | 9753 | int num; |
c906108c SS |
9754 | |
9755 | if (p == 0) | |
e2e0b3e5 | 9756 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 9757 | |
c906108c | 9758 | num = get_number (&p); |
5c44784c | 9759 | if (num == 0) |
8a3fe4f8 | 9760 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 9761 | if (*p == 0) |
8a3fe4f8 | 9762 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
9763 | |
9764 | set_ignore_count (num, | |
9765 | longest_to_int (value_as_long (parse_and_eval (p))), | |
9766 | from_tty); | |
221ea385 KS |
9767 | if (from_tty) |
9768 | printf_filtered ("\n"); | |
c906108c SS |
9769 | } |
9770 | \f | |
9771 | /* Call FUNCTION on each of the breakpoints | |
9772 | whose numbers are given in ARGS. */ | |
9773 | ||
9774 | static void | |
95a42b64 TT |
9775 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *, |
9776 | void *), | |
9777 | void *data) | |
c906108c | 9778 | { |
52f0bd74 | 9779 | char *p = args; |
c906108c | 9780 | char *p1; |
52f0bd74 AC |
9781 | int num; |
9782 | struct breakpoint *b, *tmp; | |
11cf8741 | 9783 | int match; |
c906108c SS |
9784 | |
9785 | if (p == 0) | |
e2e0b3e5 | 9786 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c SS |
9787 | |
9788 | while (*p) | |
9789 | { | |
11cf8741 | 9790 | match = 0; |
c906108c | 9791 | p1 = p; |
c5aa993b | 9792 | |
5c44784c JM |
9793 | num = get_number_or_range (&p1); |
9794 | if (num == 0) | |
c5aa993b | 9795 | { |
8a3fe4f8 | 9796 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
9797 | } |
9798 | else | |
9799 | { | |
9800 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
9801 | if (b->number == num) | |
9802 | { | |
9803 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 9804 | match = 1; |
95a42b64 | 9805 | function (b, data); |
5c44784c | 9806 | if (related_breakpoint) |
95a42b64 | 9807 | function (related_breakpoint, data); |
11cf8741 | 9808 | break; |
5c44784c | 9809 | } |
11cf8741 | 9810 | if (match == 0) |
a3f17187 | 9811 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 9812 | } |
c906108c SS |
9813 | p = p1; |
9814 | } | |
9815 | } | |
9816 | ||
0d381245 VP |
9817 | static struct bp_location * |
9818 | find_location_by_number (char *number) | |
9819 | { | |
9820 | char *dot = strchr (number, '.'); | |
9821 | char *p1; | |
9822 | int bp_num; | |
9823 | int loc_num; | |
9824 | struct breakpoint *b; | |
9825 | struct bp_location *loc; | |
9826 | ||
9827 | *dot = '\0'; | |
9828 | ||
9829 | p1 = number; | |
9830 | bp_num = get_number_or_range (&p1); | |
9831 | if (bp_num == 0) | |
9832 | error (_("Bad breakpoint number '%s'"), number); | |
9833 | ||
9834 | ALL_BREAKPOINTS (b) | |
9835 | if (b->number == bp_num) | |
9836 | { | |
9837 | break; | |
9838 | } | |
9839 | ||
9840 | if (!b || b->number != bp_num) | |
9841 | error (_("Bad breakpoint number '%s'"), number); | |
9842 | ||
9843 | p1 = dot+1; | |
9844 | loc_num = get_number_or_range (&p1); | |
9845 | if (loc_num == 0) | |
9846 | error (_("Bad breakpoint location number '%s'"), number); | |
9847 | ||
9848 | --loc_num; | |
9849 | loc = b->loc; | |
9850 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
9851 | ; | |
9852 | if (!loc) | |
9853 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
9854 | ||
9855 | return loc; | |
9856 | } | |
9857 | ||
9858 | ||
1900040c MS |
9859 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
9860 | If from_tty is nonzero, it prints a message to that effect, | |
9861 | which ends with a period (no newline). */ | |
9862 | ||
c906108c | 9863 | void |
fba45db2 | 9864 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
9865 | { |
9866 | /* Never disable a watchpoint scope breakpoint; we want to | |
9867 | hit them when we leave scope so we can delete both the | |
9868 | watchpoint and its scope breakpoint at that time. */ | |
9869 | if (bpt->type == bp_watchpoint_scope) | |
9870 | return; | |
9871 | ||
c2c6d25f | 9872 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 9873 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
9874 | return; |
9875 | ||
b5de0fa7 | 9876 | bpt->enable_state = bp_disabled; |
c906108c | 9877 | |
b60e7edf | 9878 | update_global_location_list (0); |
c906108c | 9879 | |
383f836e | 9880 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
9881 | } |
9882 | ||
95a42b64 TT |
9883 | /* A callback for map_breakpoint_numbers that calls |
9884 | disable_breakpoint. */ | |
9885 | ||
9886 | static void | |
9887 | do_map_disable_breakpoint (struct breakpoint *b, void *ignore) | |
9888 | { | |
9889 | disable_breakpoint (b); | |
9890 | } | |
9891 | ||
c906108c | 9892 | static void |
fba45db2 | 9893 | disable_command (char *args, int from_tty) |
c906108c | 9894 | { |
52f0bd74 | 9895 | struct breakpoint *bpt; |
c906108c SS |
9896 | if (args == 0) |
9897 | ALL_BREAKPOINTS (bpt) | |
9898 | switch (bpt->type) | |
c5aa993b JM |
9899 | { |
9900 | case bp_none: | |
8a3fe4f8 | 9901 | warning (_("attempted to disable apparently deleted breakpoint #%d?"), |
53a5351d | 9902 | bpt->number); |
c5aa993b JM |
9903 | continue; |
9904 | case bp_breakpoint: | |
1042e4c0 | 9905 | case bp_tracepoint: |
7a697b8d | 9906 | case bp_fast_tracepoint: |
ce78b96d | 9907 | case bp_catchpoint: |
c5aa993b JM |
9908 | case bp_hardware_breakpoint: |
9909 | case bp_watchpoint: | |
9910 | case bp_hardware_watchpoint: | |
9911 | case bp_read_watchpoint: | |
9912 | case bp_access_watchpoint: | |
9913 | disable_breakpoint (bpt); | |
9914 | default: | |
9915 | continue; | |
9916 | } | |
0d381245 VP |
9917 | else if (strchr (args, '.')) |
9918 | { | |
9919 | struct bp_location *loc = find_location_by_number (args); | |
9920 | if (loc) | |
9921 | loc->enabled = 0; | |
b60e7edf | 9922 | update_global_location_list (0); |
0d381245 | 9923 | } |
c906108c | 9924 | else |
95a42b64 | 9925 | map_breakpoint_numbers (args, do_map_disable_breakpoint, NULL); |
c906108c SS |
9926 | } |
9927 | ||
9928 | static void | |
fba45db2 | 9929 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 9930 | { |
c906108c SS |
9931 | int target_resources_ok, other_type_used; |
9932 | struct value *mark; | |
9933 | ||
9934 | if (bpt->type == bp_hardware_breakpoint) | |
9935 | { | |
9936 | int i; | |
c5aa993b | 9937 | i = hw_breakpoint_used_count (); |
53a5351d | 9938 | target_resources_ok = |
d92524f1 | 9939 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 9940 | i + 1, 0); |
c906108c | 9941 | if (target_resources_ok == 0) |
8a3fe4f8 | 9942 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 9943 | else if (target_resources_ok < 0) |
8a3fe4f8 | 9944 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
9945 | } |
9946 | ||
059fb39f PM |
9947 | if (bpt->type == bp_watchpoint |
9948 | || bpt->type == bp_hardware_watchpoint | |
9949 | || bpt->type == bp_read_watchpoint | |
9950 | || bpt->type == bp_access_watchpoint) | |
c906108c | 9951 | { |
dde02812 ES |
9952 | struct gdb_exception e; |
9953 | ||
9954 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 9955 | { |
dde02812 | 9956 | update_watchpoint (bpt, 1 /* reparse */); |
c906108c | 9957 | } |
dde02812 | 9958 | if (e.reason < 0) |
c5aa993b | 9959 | { |
dde02812 ES |
9960 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
9961 | bpt->number); | |
9962 | return; | |
c5aa993b | 9963 | } |
c906108c | 9964 | } |
0101ce28 | 9965 | |
b4c291bb KH |
9966 | if (bpt->enable_state != bp_permanent) |
9967 | bpt->enable_state = bp_enabled; | |
9968 | bpt->disposition = disposition; | |
b60e7edf | 9969 | update_global_location_list (1); |
b4c291bb KH |
9970 | breakpoints_changed (); |
9971 | ||
383f836e | 9972 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
9973 | } |
9974 | ||
fe3f5fa8 | 9975 | |
c906108c | 9976 | void |
fba45db2 | 9977 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
9978 | { |
9979 | do_enable_breakpoint (bpt, bpt->disposition); | |
9980 | } | |
9981 | ||
95a42b64 TT |
9982 | /* A callback for map_breakpoint_numbers that calls |
9983 | enable_breakpoint. */ | |
9984 | ||
9985 | static void | |
9986 | do_map_enable_breakpoint (struct breakpoint *b, void *ignore) | |
9987 | { | |
9988 | enable_breakpoint (b); | |
9989 | } | |
9990 | ||
c906108c SS |
9991 | /* The enable command enables the specified breakpoints (or all defined |
9992 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 9993 | in stopping the inferior. */ |
c906108c | 9994 | |
c906108c | 9995 | static void |
fba45db2 | 9996 | enable_command (char *args, int from_tty) |
c906108c | 9997 | { |
52f0bd74 | 9998 | struct breakpoint *bpt; |
c906108c SS |
9999 | if (args == 0) |
10000 | ALL_BREAKPOINTS (bpt) | |
10001 | switch (bpt->type) | |
c5aa993b JM |
10002 | { |
10003 | case bp_none: | |
8a3fe4f8 | 10004 | warning (_("attempted to enable apparently deleted breakpoint #%d?"), |
53a5351d | 10005 | bpt->number); |
c5aa993b JM |
10006 | continue; |
10007 | case bp_breakpoint: | |
1042e4c0 | 10008 | case bp_tracepoint: |
7a697b8d | 10009 | case bp_fast_tracepoint: |
ce78b96d | 10010 | case bp_catchpoint: |
c5aa993b JM |
10011 | case bp_hardware_breakpoint: |
10012 | case bp_watchpoint: | |
10013 | case bp_hardware_watchpoint: | |
10014 | case bp_read_watchpoint: | |
10015 | case bp_access_watchpoint: | |
10016 | enable_breakpoint (bpt); | |
10017 | default: | |
10018 | continue; | |
10019 | } | |
0d381245 VP |
10020 | else if (strchr (args, '.')) |
10021 | { | |
10022 | struct bp_location *loc = find_location_by_number (args); | |
10023 | if (loc) | |
10024 | loc->enabled = 1; | |
b60e7edf | 10025 | update_global_location_list (1); |
0d381245 | 10026 | } |
c906108c | 10027 | else |
95a42b64 | 10028 | map_breakpoint_numbers (args, do_map_enable_breakpoint, NULL); |
c906108c SS |
10029 | } |
10030 | ||
10031 | static void | |
95a42b64 | 10032 | enable_once_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 10033 | { |
b5de0fa7 | 10034 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
10035 | } |
10036 | ||
c906108c | 10037 | static void |
fba45db2 | 10038 | enable_once_command (char *args, int from_tty) |
c906108c | 10039 | { |
95a42b64 | 10040 | map_breakpoint_numbers (args, enable_once_breakpoint, NULL); |
c906108c SS |
10041 | } |
10042 | ||
10043 | static void | |
95a42b64 | 10044 | enable_delete_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 10045 | { |
b5de0fa7 | 10046 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
10047 | } |
10048 | ||
c906108c | 10049 | static void |
fba45db2 | 10050 | enable_delete_command (char *args, int from_tty) |
c906108c | 10051 | { |
95a42b64 | 10052 | map_breakpoint_numbers (args, enable_delete_breakpoint, NULL); |
c906108c SS |
10053 | } |
10054 | \f | |
fa8d40ab JJ |
10055 | static void |
10056 | set_breakpoint_cmd (char *args, int from_tty) | |
10057 | { | |
10058 | } | |
10059 | ||
10060 | static void | |
10061 | show_breakpoint_cmd (char *args, int from_tty) | |
10062 | { | |
10063 | } | |
10064 | ||
1f3b5d1b PP |
10065 | /* Invalidate last known value of any hardware watchpoint if |
10066 | the memory which that value represents has been written to by | |
10067 | GDB itself. */ | |
10068 | ||
10069 | static void | |
10070 | invalidate_bp_value_on_memory_change (CORE_ADDR addr, int len, | |
10071 | const bfd_byte *data) | |
10072 | { | |
10073 | struct breakpoint *bp; | |
10074 | ||
10075 | ALL_BREAKPOINTS (bp) | |
10076 | if (bp->enable_state == bp_enabled | |
10077 | && bp->type == bp_hardware_watchpoint | |
10078 | && bp->val_valid && bp->val) | |
10079 | { | |
10080 | struct bp_location *loc; | |
10081 | ||
10082 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
10083 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
10084 | && loc->address + loc->length > addr | |
10085 | && addr + len > loc->address) | |
10086 | { | |
10087 | value_free (bp->val); | |
10088 | bp->val = NULL; | |
10089 | bp->val_valid = 0; | |
10090 | } | |
10091 | } | |
10092 | } | |
10093 | ||
c906108c SS |
10094 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
10095 | ||
10096 | struct symtabs_and_lines | |
fba45db2 | 10097 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
10098 | { |
10099 | struct symtabs_and_lines sals; | |
10100 | if (string == 0) | |
8a3fe4f8 | 10101 | error (_("Empty line specification.")); |
c906108c SS |
10102 | if (default_breakpoint_valid) |
10103 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
10104 | default_breakpoint_symtab, |
10105 | default_breakpoint_line, | |
68219205 | 10106 | (char ***) NULL, NULL); |
c906108c SS |
10107 | else |
10108 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 10109 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c | 10110 | if (*string) |
8a3fe4f8 | 10111 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
10112 | return sals; |
10113 | } | |
8181d85f DJ |
10114 | |
10115 | /* Create and insert a raw software breakpoint at PC. Return an | |
10116 | identifier, which should be used to remove the breakpoint later. | |
10117 | In general, places which call this should be using something on the | |
10118 | breakpoint chain instead; this function should be eliminated | |
10119 | someday. */ | |
10120 | ||
10121 | void * | |
6c95b8df PA |
10122 | deprecated_insert_raw_breakpoint (struct gdbarch *gdbarch, |
10123 | struct address_space *aspace, CORE_ADDR pc) | |
8181d85f DJ |
10124 | { |
10125 | struct bp_target_info *bp_tgt; | |
10126 | ||
6c95b8df | 10127 | bp_tgt = XZALLOC (struct bp_target_info); |
8181d85f | 10128 | |
6c95b8df | 10129 | bp_tgt->placed_address_space = aspace; |
8181d85f | 10130 | bp_tgt->placed_address = pc; |
6c95b8df | 10131 | |
a6d9a66e | 10132 | if (target_insert_breakpoint (gdbarch, bp_tgt) != 0) |
8181d85f DJ |
10133 | { |
10134 | /* Could not insert the breakpoint. */ | |
10135 | xfree (bp_tgt); | |
10136 | return NULL; | |
10137 | } | |
10138 | ||
10139 | return bp_tgt; | |
10140 | } | |
10141 | ||
10142 | /* Remove a breakpoint BP inserted by deprecated_insert_raw_breakpoint. */ | |
10143 | ||
10144 | int | |
a6d9a66e | 10145 | deprecated_remove_raw_breakpoint (struct gdbarch *gdbarch, void *bp) |
8181d85f DJ |
10146 | { |
10147 | struct bp_target_info *bp_tgt = bp; | |
10148 | int ret; | |
10149 | ||
a6d9a66e | 10150 | ret = target_remove_breakpoint (gdbarch, bp_tgt); |
8181d85f DJ |
10151 | xfree (bp_tgt); |
10152 | ||
10153 | return ret; | |
10154 | } | |
10155 | ||
10156 | /* One (or perhaps two) breakpoints used for software single stepping. */ | |
10157 | ||
10158 | static void *single_step_breakpoints[2]; | |
a6d9a66e | 10159 | static struct gdbarch *single_step_gdbarch[2]; |
8181d85f DJ |
10160 | |
10161 | /* Create and insert a breakpoint for software single step. */ | |
10162 | ||
10163 | void | |
6c95b8df PA |
10164 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
10165 | struct address_space *aspace, CORE_ADDR next_pc) | |
8181d85f DJ |
10166 | { |
10167 | void **bpt_p; | |
10168 | ||
10169 | if (single_step_breakpoints[0] == NULL) | |
a6d9a66e UW |
10170 | { |
10171 | bpt_p = &single_step_breakpoints[0]; | |
10172 | single_step_gdbarch[0] = gdbarch; | |
10173 | } | |
8181d85f DJ |
10174 | else |
10175 | { | |
10176 | gdb_assert (single_step_breakpoints[1] == NULL); | |
10177 | bpt_p = &single_step_breakpoints[1]; | |
a6d9a66e | 10178 | single_step_gdbarch[1] = gdbarch; |
8181d85f DJ |
10179 | } |
10180 | ||
10181 | /* NOTE drow/2006-04-11: A future improvement to this function would be | |
10182 | to only create the breakpoints once, and actually put them on the | |
10183 | breakpoint chain. That would let us use set_raw_breakpoint. We could | |
10184 | adjust the addresses each time they were needed. Doing this requires | |
10185 | corresponding changes elsewhere where single step breakpoints are | |
10186 | handled, however. So, for now, we use this. */ | |
10187 | ||
6c95b8df | 10188 | *bpt_p = deprecated_insert_raw_breakpoint (gdbarch, aspace, next_pc); |
8181d85f | 10189 | if (*bpt_p == NULL) |
5af949e3 UW |
10190 | error (_("Could not insert single-step breakpoint at %s"), |
10191 | paddress (gdbarch, next_pc)); | |
8181d85f DJ |
10192 | } |
10193 | ||
10194 | /* Remove and delete any breakpoints used for software single step. */ | |
10195 | ||
10196 | void | |
10197 | remove_single_step_breakpoints (void) | |
10198 | { | |
10199 | gdb_assert (single_step_breakpoints[0] != NULL); | |
10200 | ||
10201 | /* See insert_single_step_breakpoint for more about this deprecated | |
10202 | call. */ | |
a6d9a66e UW |
10203 | deprecated_remove_raw_breakpoint (single_step_gdbarch[0], |
10204 | single_step_breakpoints[0]); | |
10205 | single_step_gdbarch[0] = NULL; | |
8181d85f DJ |
10206 | single_step_breakpoints[0] = NULL; |
10207 | ||
10208 | if (single_step_breakpoints[1] != NULL) | |
10209 | { | |
a6d9a66e UW |
10210 | deprecated_remove_raw_breakpoint (single_step_gdbarch[1], |
10211 | single_step_breakpoints[1]); | |
10212 | single_step_gdbarch[1] = NULL; | |
8181d85f DJ |
10213 | single_step_breakpoints[1] = NULL; |
10214 | } | |
10215 | } | |
10216 | ||
1aafd4da UW |
10217 | /* Check whether a software single-step breakpoint is inserted at PC. */ |
10218 | ||
10219 | static int | |
6c95b8df | 10220 | single_step_breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
1aafd4da UW |
10221 | { |
10222 | int i; | |
10223 | ||
10224 | for (i = 0; i < 2; i++) | |
10225 | { | |
10226 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
6c95b8df PA |
10227 | if (bp_tgt |
10228 | && breakpoint_address_match (bp_tgt->placed_address_space, | |
10229 | bp_tgt->placed_address, | |
10230 | aspace, pc)) | |
1aafd4da UW |
10231 | return 1; |
10232 | } | |
10233 | ||
10234 | return 0; | |
10235 | } | |
10236 | ||
a96d9b2e SDJ |
10237 | /* Returns 0 if 'bp' is NOT a syscall catchpoint, |
10238 | non-zero otherwise. */ | |
10239 | static int | |
10240 | is_syscall_catchpoint_enabled (struct breakpoint *bp) | |
10241 | { | |
10242 | if (syscall_catchpoint_p (bp) | |
10243 | && bp->enable_state != bp_disabled | |
10244 | && bp->enable_state != bp_call_disabled) | |
10245 | return 1; | |
10246 | else | |
10247 | return 0; | |
10248 | } | |
10249 | ||
10250 | int | |
10251 | catch_syscall_enabled (void) | |
10252 | { | |
10253 | struct inferior *inf = current_inferior (); | |
10254 | ||
10255 | return inf->total_syscalls_count != 0; | |
10256 | } | |
10257 | ||
10258 | int | |
10259 | catching_syscall_number (int syscall_number) | |
10260 | { | |
10261 | struct breakpoint *bp; | |
10262 | ||
10263 | ALL_BREAKPOINTS (bp) | |
10264 | if (is_syscall_catchpoint_enabled (bp)) | |
10265 | { | |
10266 | if (bp->syscalls_to_be_caught) | |
10267 | { | |
10268 | int i, iter; | |
10269 | for (i = 0; | |
10270 | VEC_iterate (int, bp->syscalls_to_be_caught, i, iter); | |
10271 | i++) | |
10272 | if (syscall_number == iter) | |
10273 | return 1; | |
10274 | } | |
10275 | else | |
10276 | return 1; | |
10277 | } | |
10278 | ||
10279 | return 0; | |
10280 | } | |
10281 | ||
10282 | /* Complete syscall names. Used by "catch syscall". */ | |
10283 | static char ** | |
10284 | catch_syscall_completer (struct cmd_list_element *cmd, | |
10285 | char *text, char *word) | |
10286 | { | |
10287 | const char **list = get_syscall_names (); | |
10288 | return (list == NULL) ? NULL : complete_on_enum (list, text, word); | |
10289 | } | |
10290 | ||
1042e4c0 SS |
10291 | /* Tracepoint-specific operations. */ |
10292 | ||
10293 | /* Set tracepoint count to NUM. */ | |
10294 | static void | |
10295 | set_tracepoint_count (int num) | |
10296 | { | |
10297 | tracepoint_count = num; | |
4fa62494 | 10298 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
10299 | } |
10300 | ||
10301 | void | |
10302 | trace_command (char *arg, int from_tty) | |
10303 | { | |
8cdf0e15 VP |
10304 | if (create_breakpoint (get_current_arch (), |
10305 | arg, | |
10306 | NULL, 0, 1 /* parse arg */, | |
10307 | 0 /* tempflag */, 0 /* hardwareflag */, | |
10308 | 1 /* traceflag */, | |
10309 | 0 /* Ignore count */, | |
10310 | pending_break_support, | |
10311 | NULL, | |
10312 | from_tty, | |
10313 | 1 /* enabled */)) | |
fd9b8c24 | 10314 | set_tracepoint_count (breakpoint_count); |
1042e4c0 SS |
10315 | } |
10316 | ||
7a697b8d SS |
10317 | void |
10318 | ftrace_command (char *arg, int from_tty) | |
10319 | { | |
8cdf0e15 VP |
10320 | if (create_breakpoint (get_current_arch (), |
10321 | arg, | |
10322 | NULL, 0, 1 /* parse arg */, | |
10323 | 0 /* tempflag */, 1 /* hardwareflag */, | |
10324 | 1 /* traceflag */, | |
10325 | 0 /* Ignore count */, | |
10326 | pending_break_support, | |
10327 | NULL, | |
10328 | from_tty, | |
10329 | 1 /* enabled */)) | |
fd9b8c24 | 10330 | set_tracepoint_count (breakpoint_count); |
7a697b8d SS |
10331 | } |
10332 | ||
409873ef SS |
10333 | /* Set up a fake reader function that gets command lines from a linked |
10334 | list that was acquired during tracepoint uploading. */ | |
10335 | ||
10336 | static struct uploaded_tp *this_utp; | |
10337 | static struct uploaded_string *next_cmd; | |
10338 | ||
10339 | static char * | |
10340 | read_uploaded_action (void) | |
10341 | { | |
10342 | char *rslt; | |
10343 | ||
10344 | if (!next_cmd) | |
10345 | return NULL; | |
10346 | ||
10347 | rslt = next_cmd->str; | |
10348 | next_cmd = next_cmd->next; | |
10349 | ||
10350 | return rslt; | |
10351 | } | |
10352 | ||
00bf0b85 SS |
10353 | /* Given information about a tracepoint as recorded on a target (which |
10354 | can be either a live system or a trace file), attempt to create an | |
10355 | equivalent GDB tracepoint. This is not a reliable process, since | |
10356 | the target does not necessarily have all the information used when | |
10357 | the tracepoint was originally defined. */ | |
10358 | ||
10359 | struct breakpoint * | |
10360 | create_tracepoint_from_upload (struct uploaded_tp *utp) | |
d5551862 | 10361 | { |
409873ef | 10362 | char *addr_str, small_buf[100]; |
d5551862 | 10363 | struct breakpoint *tp; |
fd9b8c24 | 10364 | |
409873ef SS |
10365 | if (utp->at_string) |
10366 | addr_str = utp->at_string; | |
10367 | else | |
10368 | { | |
10369 | /* In the absence of a source location, fall back to raw | |
10370 | address. Since there is no way to confirm that the address | |
10371 | means the same thing as when the trace was started, warn the | |
10372 | user. */ | |
10373 | warning (_("Uploaded tracepoint %d has no source location, using raw address"), | |
10374 | utp->number); | |
10375 | sprintf (small_buf, "*%s", hex_string (utp->addr)); | |
10376 | addr_str = small_buf; | |
10377 | } | |
10378 | ||
10379 | /* There's not much we can do with a sequence of bytecodes. */ | |
10380 | if (utp->cond && !utp->cond_string) | |
10381 | warning (_("Uploaded tracepoint %d condition has no source form, ignoring it"), | |
10382 | utp->number); | |
d5551862 | 10383 | |
8cdf0e15 | 10384 | if (!create_breakpoint (get_current_arch (), |
409873ef SS |
10385 | addr_str, |
10386 | utp->cond_string, -1, 0 /* parse cond/thread */, | |
8cdf0e15 VP |
10387 | 0 /* tempflag */, |
10388 | (utp->type == bp_fast_tracepoint) /* hardwareflag */, | |
10389 | 1 /* traceflag */, | |
10390 | 0 /* Ignore count */, | |
10391 | pending_break_support, | |
10392 | NULL, | |
10393 | 0 /* from_tty */, | |
10394 | utp->enabled /* enabled */)) | |
fd9b8c24 PA |
10395 | return NULL; |
10396 | ||
00bf0b85 SS |
10397 | set_tracepoint_count (breakpoint_count); |
10398 | ||
409873ef | 10399 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
10400 | tp = get_tracepoint (tracepoint_count); |
10401 | gdb_assert (tp != NULL); | |
d5551862 | 10402 | |
00bf0b85 SS |
10403 | if (utp->pass > 0) |
10404 | { | |
409873ef | 10405 | sprintf (small_buf, "%d %d", utp->pass, tp->number); |
00bf0b85 | 10406 | |
409873ef | 10407 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
10408 | } |
10409 | ||
409873ef SS |
10410 | /* If we have uploaded versions of the original commands, set up a |
10411 | special-purpose "reader" function and call the usual command line | |
10412 | reader, then pass the result to the breakpoint command-setting | |
10413 | function. */ | |
10414 | if (utp->cmd_strings) | |
00bf0b85 | 10415 | { |
409873ef | 10416 | struct command_line *cmd_list; |
00bf0b85 | 10417 | |
409873ef SS |
10418 | this_utp = utp; |
10419 | next_cmd = utp->cmd_strings; | |
d5551862 | 10420 | |
409873ef SS |
10421 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
10422 | ||
10423 | breakpoint_set_commands (tp, cmd_list); | |
00bf0b85 | 10424 | } |
409873ef SS |
10425 | else if (utp->numactions > 0 || utp->num_step_actions > 0) |
10426 | warning (_("Uploaded tracepoint %d actions have no source form, ignoring them"), | |
10427 | utp->number); | |
00bf0b85 SS |
10428 | |
10429 | return tp; | |
10430 | } | |
10431 | ||
1042e4c0 SS |
10432 | /* Print information on tracepoint number TPNUM_EXP, or all if |
10433 | omitted. */ | |
10434 | ||
10435 | static void | |
10436 | tracepoints_info (char *tpnum_exp, int from_tty) | |
10437 | { | |
10438 | struct breakpoint *b; | |
10439 | int tps_to_list = 0; | |
10440 | ||
10441 | /* In the no-arguments case, say "No tracepoints" if none found. */ | |
10442 | if (tpnum_exp == 0) | |
10443 | { | |
10444 | ALL_TRACEPOINTS (b) | |
10445 | { | |
10446 | if (b->number >= 0) | |
10447 | { | |
10448 | tps_to_list = 1; | |
10449 | break; | |
10450 | } | |
10451 | } | |
10452 | if (!tps_to_list) | |
10453 | { | |
10454 | ui_out_message (uiout, 0, "No tracepoints.\n"); | |
10455 | return; | |
10456 | } | |
10457 | } | |
10458 | ||
10459 | /* Otherwise be the same as "info break". */ | |
10460 | breakpoints_info (tpnum_exp, from_tty); | |
10461 | } | |
10462 | ||
10463 | /* The 'enable trace' command enables tracepoints. | |
10464 | Not supported by all targets. */ | |
10465 | static void | |
10466 | enable_trace_command (char *args, int from_tty) | |
10467 | { | |
10468 | enable_command (args, from_tty); | |
10469 | } | |
10470 | ||
10471 | /* The 'disable trace' command disables tracepoints. | |
10472 | Not supported by all targets. */ | |
10473 | static void | |
10474 | disable_trace_command (char *args, int from_tty) | |
10475 | { | |
10476 | disable_command (args, from_tty); | |
10477 | } | |
10478 | ||
10479 | /* Remove a tracepoint (or all if no argument) */ | |
10480 | static void | |
10481 | delete_trace_command (char *arg, int from_tty) | |
10482 | { | |
10483 | struct breakpoint *b, *temp; | |
10484 | ||
10485 | dont_repeat (); | |
10486 | ||
10487 | if (arg == 0) | |
10488 | { | |
10489 | int breaks_to_delete = 0; | |
10490 | ||
10491 | /* Delete all breakpoints if no argument. | |
10492 | Do not delete internal or call-dummy breakpoints, these | |
10493 | have to be deleted with an explicit breakpoint number argument. */ | |
10494 | ALL_TRACEPOINTS (b) | |
10495 | { | |
10496 | if (b->number >= 0) | |
10497 | { | |
10498 | breaks_to_delete = 1; | |
10499 | break; | |
10500 | } | |
10501 | } | |
10502 | ||
10503 | /* Ask user only if there are some breakpoints to delete. */ | |
10504 | if (!from_tty | |
10505 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
10506 | { | |
10507 | ALL_BREAKPOINTS_SAFE (b, temp) | |
10508 | { | |
7a697b8d | 10509 | if (tracepoint_type (b) |
059fb39f | 10510 | && b->number >= 0) |
1042e4c0 SS |
10511 | delete_breakpoint (b); |
10512 | } | |
10513 | } | |
10514 | } | |
10515 | else | |
95a42b64 | 10516 | map_breakpoint_numbers (arg, do_delete_breakpoint, NULL); |
1042e4c0 SS |
10517 | } |
10518 | ||
10519 | /* Set passcount for tracepoint. | |
10520 | ||
10521 | First command argument is passcount, second is tracepoint number. | |
10522 | If tracepoint number omitted, apply to most recently defined. | |
10523 | Also accepts special argument "all". */ | |
10524 | ||
10525 | static void | |
10526 | trace_pass_command (char *args, int from_tty) | |
10527 | { | |
10528 | struct breakpoint *t1 = (struct breakpoint *) -1, *t2; | |
10529 | unsigned int count; | |
10530 | int all = 0; | |
10531 | ||
10532 | if (args == 0 || *args == 0) | |
10533 | error (_("passcount command requires an argument (count + optional TP num)")); | |
10534 | ||
10535 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ | |
10536 | ||
10537 | while (*args && isspace ((int) *args)) | |
10538 | args++; | |
10539 | ||
10540 | if (*args && strncasecmp (args, "all", 3) == 0) | |
10541 | { | |
10542 | args += 3; /* Skip special argument "all". */ | |
10543 | all = 1; | |
10544 | if (*args) | |
10545 | error (_("Junk at end of arguments.")); | |
10546 | } | |
10547 | else | |
10548 | t1 = get_tracepoint_by_number (&args, 1, 1); | |
10549 | ||
10550 | do | |
10551 | { | |
10552 | if (t1) | |
10553 | { | |
10554 | ALL_TRACEPOINTS (t2) | |
10555 | if (t1 == (struct breakpoint *) -1 || t1 == t2) | |
10556 | { | |
10557 | t2->pass_count = count; | |
10558 | observer_notify_tracepoint_modified (t2->number); | |
10559 | if (from_tty) | |
10560 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
10561 | t2->number, count); | |
10562 | } | |
10563 | if (! all && *args) | |
10564 | t1 = get_tracepoint_by_number (&args, 1, 0); | |
10565 | } | |
10566 | } | |
10567 | while (*args); | |
10568 | } | |
10569 | ||
10570 | struct breakpoint * | |
10571 | get_tracepoint (int num) | |
10572 | { | |
10573 | struct breakpoint *t; | |
10574 | ||
10575 | ALL_TRACEPOINTS (t) | |
10576 | if (t->number == num) | |
10577 | return t; | |
10578 | ||
10579 | return NULL; | |
10580 | } | |
10581 | ||
d5551862 SS |
10582 | /* Find the tracepoint with the given target-side number (which may be |
10583 | different from the tracepoint number after disconnecting and | |
10584 | reconnecting). */ | |
10585 | ||
10586 | struct breakpoint * | |
10587 | get_tracepoint_by_number_on_target (int num) | |
10588 | { | |
10589 | struct breakpoint *t; | |
10590 | ||
10591 | ALL_TRACEPOINTS (t) | |
10592 | if (t->number_on_target == num) | |
10593 | return t; | |
10594 | ||
10595 | return NULL; | |
10596 | } | |
10597 | ||
1042e4c0 SS |
10598 | /* Utility: parse a tracepoint number and look it up in the list. |
10599 | If MULTI_P is true, there might be a range of tracepoints in ARG. | |
10600 | if OPTIONAL_P is true, then if the argument is missing, the most | |
10601 | recent tracepoint (tracepoint_count) is returned. */ | |
10602 | struct breakpoint * | |
10603 | get_tracepoint_by_number (char **arg, int multi_p, int optional_p) | |
10604 | { | |
10605 | extern int tracepoint_count; | |
10606 | struct breakpoint *t; | |
10607 | int tpnum; | |
10608 | char *instring = arg == NULL ? NULL : *arg; | |
10609 | ||
10610 | if (arg == NULL || *arg == NULL || ! **arg) | |
10611 | { | |
10612 | if (optional_p) | |
10613 | tpnum = tracepoint_count; | |
10614 | else | |
10615 | error_no_arg (_("tracepoint number")); | |
10616 | } | |
10617 | else | |
10618 | tpnum = multi_p ? get_number_or_range (arg) : get_number (arg); | |
10619 | ||
10620 | if (tpnum <= 0) | |
10621 | { | |
10622 | if (instring && *instring) | |
10623 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
10624 | instring); | |
10625 | else | |
10626 | printf_filtered (_("Tracepoint argument missing and no previous tracepoint\n")); | |
10627 | return NULL; | |
10628 | } | |
10629 | ||
10630 | ALL_TRACEPOINTS (t) | |
10631 | if (t->number == tpnum) | |
10632 | { | |
10633 | return t; | |
10634 | } | |
10635 | ||
10636 | /* FIXME: if we are in the middle of a range we don't want to give | |
10637 | a message. The current interface to get_number_or_range doesn't | |
10638 | allow us to discover this. */ | |
10639 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); | |
10640 | return NULL; | |
10641 | } | |
10642 | ||
10643 | /* save-tracepoints command */ | |
10644 | static void | |
10645 | tracepoint_save_command (char *args, int from_tty) | |
10646 | { | |
10647 | struct breakpoint *tp; | |
10648 | int any_tp = 0; | |
a7bdde9e VP |
10649 | struct command_line *line; |
10650 | char *pathname; | |
1042e4c0 SS |
10651 | char tmp[40]; |
10652 | struct cleanup *cleanup; | |
a7bdde9e | 10653 | struct ui_file *fp; |
1042e4c0 SS |
10654 | |
10655 | if (args == 0 || *args == 0) | |
10656 | error (_("Argument required (file name in which to save tracepoints)")); | |
10657 | ||
10658 | /* See if we have anything to save. */ | |
10659 | ALL_TRACEPOINTS (tp) | |
10660 | { | |
10661 | any_tp = 1; | |
10662 | break; | |
10663 | } | |
10664 | if (!any_tp) | |
10665 | { | |
10666 | warning (_("save-tracepoints: no tracepoints to save.")); | |
10667 | return; | |
10668 | } | |
10669 | ||
10670 | pathname = tilde_expand (args); | |
10671 | cleanup = make_cleanup (xfree, pathname); | |
a7bdde9e | 10672 | fp = gdb_fopen (pathname, "w"); |
059fb39f | 10673 | if (!fp) |
1042e4c0 SS |
10674 | error (_("Unable to open file '%s' for saving tracepoints (%s)"), |
10675 | args, safe_strerror (errno)); | |
a7bdde9e | 10676 | make_cleanup_ui_file_delete (fp); |
8bf6485c SS |
10677 | |
10678 | save_trace_state_variables (fp); | |
10679 | ||
1042e4c0 SS |
10680 | ALL_TRACEPOINTS (tp) |
10681 | { | |
8bf6485c SS |
10682 | if (tp->type == bp_fast_tracepoint) |
10683 | fprintf_unfiltered (fp, "ftrace"); | |
10684 | else | |
10685 | fprintf_unfiltered (fp, "trace"); | |
10686 | ||
1042e4c0 | 10687 | if (tp->addr_string) |
8bf6485c | 10688 | fprintf_unfiltered (fp, " %s", tp->addr_string); |
1042e4c0 SS |
10689 | else |
10690 | { | |
10691 | sprintf_vma (tmp, tp->loc->address); | |
8bf6485c | 10692 | fprintf_unfiltered (fp, " *0x%s", tmp); |
1042e4c0 SS |
10693 | } |
10694 | ||
8bf6485c SS |
10695 | if (tp->cond_string) |
10696 | fprintf_unfiltered (fp, " if %s", tp->cond_string); | |
10697 | ||
10698 | fprintf_unfiltered (fp, "\n"); | |
10699 | ||
1042e4c0 | 10700 | if (tp->pass_count) |
a7bdde9e | 10701 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); |
1042e4c0 | 10702 | |
a7bdde9e | 10703 | if (tp->commands) |
1042e4c0 | 10704 | { |
a7bdde9e VP |
10705 | volatile struct gdb_exception ex; |
10706 | ||
10707 | fprintf_unfiltered (fp, " actions\n"); | |
10708 | ||
10709 | ui_out_redirect (uiout, fp); | |
10710 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
1042e4c0 | 10711 | { |
9add0f1b | 10712 | print_command_lines (uiout, tp->commands->commands, 2); |
a7bdde9e VP |
10713 | } |
10714 | ui_out_redirect (uiout, NULL); | |
1042e4c0 | 10715 | |
a7bdde9e VP |
10716 | if (ex.reason < 0) |
10717 | throw_exception (ex); | |
1042e4c0 | 10718 | |
a7bdde9e | 10719 | fprintf_unfiltered (fp, " end\n"); |
1042e4c0 SS |
10720 | } |
10721 | } | |
8bf6485c SS |
10722 | |
10723 | if (*default_collect) | |
10724 | fprintf_unfiltered (fp, "set default-collect %s\n", default_collect); | |
10725 | ||
1042e4c0 SS |
10726 | do_cleanups (cleanup); |
10727 | if (from_tty) | |
10728 | printf_filtered (_("Tracepoints saved to file '%s'.\n"), args); | |
10729 | return; | |
10730 | } | |
10731 | ||
10732 | /* Create a vector of all tracepoints. */ | |
10733 | ||
10734 | VEC(breakpoint_p) * | |
10735 | all_tracepoints () | |
10736 | { | |
10737 | VEC(breakpoint_p) *tp_vec = 0; | |
10738 | struct breakpoint *tp; | |
10739 | ||
10740 | ALL_TRACEPOINTS (tp) | |
10741 | { | |
10742 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
10743 | } | |
10744 | ||
10745 | return tp_vec; | |
10746 | } | |
10747 | ||
c906108c | 10748 | \f |
31e2b00f AS |
10749 | /* This help string is used for the break, hbreak, tbreak and thbreak commands. |
10750 | It is defined as a macro to prevent duplication. | |
10751 | COMMAND should be a string constant containing the name of the command. */ | |
10752 | #define BREAK_ARGS_HELP(command) \ | |
10753 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
10754 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
10755 | If a line number is specified, break at start of code for that line.\n\ | |
10756 | If a function is specified, break at start of code for that function.\n\ | |
10757 | If an address is specified, break at that exact address.\n\ | |
10758 | With no LOCATION, uses current execution address of selected stack frame.\n\ | |
10759 | This is useful for breaking on return to a stack frame.\n\ | |
10760 | \n\ | |
10761 | THREADNUM is the number from \"info threads\".\n\ | |
10762 | CONDITION is a boolean expression.\n\ | |
10763 | \n\ | |
10764 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
10765 | \n\ | |
10766 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
10767 | ||
44feb3ce TT |
10768 | /* List of subcommands for "catch". */ |
10769 | static struct cmd_list_element *catch_cmdlist; | |
10770 | ||
10771 | /* List of subcommands for "tcatch". */ | |
10772 | static struct cmd_list_element *tcatch_cmdlist; | |
10773 | ||
10774 | /* Like add_cmd, but add the command to both the "catch" and "tcatch" | |
10775 | lists, and pass some additional user data to the command function. */ | |
10776 | static void | |
10777 | add_catch_command (char *name, char *docstring, | |
10778 | void (*sfunc) (char *args, int from_tty, | |
10779 | struct cmd_list_element *command), | |
a96d9b2e SDJ |
10780 | char **(*completer) (struct cmd_list_element *cmd, |
10781 | char *text, char *word), | |
44feb3ce TT |
10782 | void *user_data_catch, |
10783 | void *user_data_tcatch) | |
10784 | { | |
10785 | struct cmd_list_element *command; | |
10786 | ||
10787 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
10788 | &catch_cmdlist); | |
10789 | set_cmd_sfunc (command, sfunc); | |
10790 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 10791 | set_cmd_completer (command, completer); |
44feb3ce TT |
10792 | |
10793 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
10794 | &tcatch_cmdlist); | |
10795 | set_cmd_sfunc (command, sfunc); | |
10796 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 10797 | set_cmd_completer (command, completer); |
44feb3ce TT |
10798 | } |
10799 | ||
6c95b8df | 10800 | static void |
a79b8f6e | 10801 | clear_syscall_counts (struct inferior *inf) |
6c95b8df | 10802 | { |
6c95b8df PA |
10803 | inf->total_syscalls_count = 0; |
10804 | inf->any_syscall_count = 0; | |
10805 | VEC_free (int, inf->syscalls_counts); | |
10806 | } | |
10807 | ||
c906108c | 10808 | void |
fba45db2 | 10809 | _initialize_breakpoint (void) |
c906108c | 10810 | { |
fa8d40ab JJ |
10811 | static struct cmd_list_element *breakpoint_set_cmdlist; |
10812 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
c906108c SS |
10813 | struct cmd_list_element *c; |
10814 | ||
84acb35a | 10815 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
6c95b8df | 10816 | observer_attach_inferior_exit (clear_syscall_counts); |
1f3b5d1b | 10817 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 10818 | |
c906108c SS |
10819 | breakpoint_chain = 0; |
10820 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
10821 | before a breakpoint is set. */ | |
10822 | breakpoint_count = 0; | |
10823 | ||
1042e4c0 SS |
10824 | tracepoint_count = 0; |
10825 | ||
1bedd215 AC |
10826 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
10827 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
10828 | Usage is `ignore N COUNT'.")); | |
c906108c | 10829 | if (xdb_commands) |
c5aa993b | 10830 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 10831 | |
1bedd215 AC |
10832 | add_com ("commands", class_breakpoint, commands_command, _("\ |
10833 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
10834 | Give breakpoint number as argument after \"commands\".\n\ |
10835 | With no argument, the targeted breakpoint is the last one set.\n\ | |
10836 | The commands themselves follow starting on the next line.\n\ | |
10837 | Type a line containing \"end\" to indicate the end of them.\n\ | |
10838 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 10839 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 10840 | |
1bedd215 AC |
10841 | add_com ("condition", class_breakpoint, condition_command, _("\ |
10842 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 10843 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 10844 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 10845 | |
1bedd215 | 10846 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 10847 | Set a temporary breakpoint.\n\ |
c906108c SS |
10848 | Like \"break\" except the breakpoint is only temporary,\n\ |
10849 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
10850 | by using \"enable delete\" on the breakpoint number.\n\ |
10851 | \n" | |
10852 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 10853 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 10854 | |
1bedd215 | 10855 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
31e2b00f | 10856 | Set a hardware assisted breakpoint.\n\ |
c906108c | 10857 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
10858 | some target hardware may not have this support.\n\ |
10859 | \n" | |
10860 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 10861 | set_cmd_completer (c, location_completer); |
c906108c | 10862 | |
1bedd215 | 10863 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 10864 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 10865 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
10866 | so it will be deleted when hit.\n\ |
10867 | \n" | |
10868 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 10869 | set_cmd_completer (c, location_completer); |
c906108c | 10870 | |
1bedd215 AC |
10871 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
10872 | Enable some breakpoints.\n\ | |
c906108c SS |
10873 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
10874 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
10875 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 10876 | With a subcommand you can enable temporarily."), |
c906108c SS |
10877 | &enablelist, "enable ", 1, &cmdlist); |
10878 | if (xdb_commands) | |
1bedd215 AC |
10879 | add_com ("ab", class_breakpoint, enable_command, _("\ |
10880 | Enable some breakpoints.\n\ | |
c906108c SS |
10881 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
10882 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
10883 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 10884 | With a subcommand you can enable temporarily.")); |
c906108c SS |
10885 | |
10886 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
10887 | ||
1bedd215 AC |
10888 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
10889 | Enable some breakpoints.\n\ | |
c906108c SS |
10890 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
10891 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 10892 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 10893 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 10894 | |
1a966eab AC |
10895 | add_cmd ("once", no_class, enable_once_command, _("\ |
10896 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
10897 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
10898 | &enablebreaklist); |
10899 | ||
1a966eab AC |
10900 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
10901 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
10902 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
10903 | &enablebreaklist); |
10904 | ||
1a966eab AC |
10905 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
10906 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
10907 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
10908 | &enablelist); |
10909 | ||
1a966eab AC |
10910 | add_cmd ("once", no_class, enable_once_command, _("\ |
10911 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
10912 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
10913 | &enablelist); |
10914 | ||
1bedd215 AC |
10915 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
10916 | Disable some breakpoints.\n\ | |
c906108c SS |
10917 | Arguments are breakpoint numbers with spaces in between.\n\ |
10918 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 10919 | A disabled breakpoint is not forgotten, but has no effect until reenabled."), |
c906108c SS |
10920 | &disablelist, "disable ", 1, &cmdlist); |
10921 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
10922 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
10923 | if (xdb_commands) | |
1bedd215 AC |
10924 | add_com ("sb", class_breakpoint, disable_command, _("\ |
10925 | Disable some breakpoints.\n\ | |
c906108c SS |
10926 | Arguments are breakpoint numbers with spaces in between.\n\ |
10927 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 10928 | A disabled breakpoint is not forgotten, but has no effect until reenabled.")); |
c906108c | 10929 | |
1a966eab AC |
10930 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
10931 | Disable some breakpoints.\n\ | |
c906108c SS |
10932 | Arguments are breakpoint numbers with spaces in between.\n\ |
10933 | To disable all breakpoints, give no argument.\n\ | |
10934 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
1a966eab | 10935 | This command may be abbreviated \"disable\"."), |
c906108c SS |
10936 | &disablelist); |
10937 | ||
1bedd215 AC |
10938 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
10939 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
10940 | Arguments are breakpoint numbers with spaces in between.\n\ |
10941 | To delete all breakpoints, give no argument.\n\ | |
10942 | \n\ | |
10943 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 10944 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
10945 | &deletelist, "delete ", 1, &cmdlist); |
10946 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 10947 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 10948 | if (xdb_commands) |
1bedd215 AC |
10949 | add_com ("db", class_breakpoint, delete_command, _("\ |
10950 | Delete some breakpoints.\n\ | |
c906108c | 10951 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 10952 | To delete all breakpoints, give no argument.\n")); |
c906108c | 10953 | |
1a966eab AC |
10954 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
10955 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
10956 | Arguments are breakpoint numbers with spaces in between.\n\ |
10957 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 10958 | This command may be abbreviated \"delete\"."), |
c906108c SS |
10959 | &deletelist); |
10960 | ||
1bedd215 AC |
10961 | add_com ("clear", class_breakpoint, clear_command, _("\ |
10962 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
10963 | Argument may be line number, function name, or \"*\" and an address.\n\ |
10964 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
10965 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
10966 | If an address is specified, breakpoints at that address are cleared.\n\ |
10967 | \n\ | |
10968 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
10969 | is executing in.\n\ |
10970 | \n\ | |
1bedd215 | 10971 | See also the \"delete\" command which clears breakpoints by number.")); |
c906108c | 10972 | |
1bedd215 | 10973 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
10974 | Set breakpoint at specified line or function.\n" |
10975 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 10976 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 10977 | |
c906108c SS |
10978 | add_com_alias ("b", "break", class_run, 1); |
10979 | add_com_alias ("br", "break", class_run, 1); | |
10980 | add_com_alias ("bre", "break", class_run, 1); | |
10981 | add_com_alias ("brea", "break", class_run, 1); | |
10982 | ||
7681d515 PM |
10983 | if (xdb_commands) |
10984 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
c906108c SS |
10985 | |
10986 | if (dbx_commands) | |
10987 | { | |
1bedd215 AC |
10988 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
10989 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
10990 | &stoplist, "stop ", 1, &cmdlist); |
10991 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 10992 | _("Break in function or address."), &stoplist); |
c5aa993b | 10993 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 10994 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
10995 | add_com ("status", class_info, breakpoints_info, _("\ |
10996 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
10997 | The \"Type\" column indicates one of:\n\ |
10998 | \tbreakpoint - normal breakpoint\n\ | |
10999 | \twatchpoint - watchpoint\n\ | |
11000 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
11001 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
11002 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
11003 | address and file/line number respectively.\n\ |
11004 | \n\ | |
11005 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
11006 | are set to the address of the last breakpoint listed unless the command\n\ |
11007 | is prefixed with \"server \".\n\n\ | |
c906108c | 11008 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 11009 | breakpoint set.")); |
c906108c SS |
11010 | } |
11011 | ||
1bedd215 AC |
11012 | add_info ("breakpoints", breakpoints_info, _("\ |
11013 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
11014 | The \"Type\" column indicates one of:\n\ |
11015 | \tbreakpoint - normal breakpoint\n\ | |
11016 | \twatchpoint - watchpoint\n\ | |
11017 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
11018 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
11019 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
11020 | address and file/line number respectively.\n\ |
11021 | \n\ | |
11022 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
11023 | are set to the address of the last breakpoint listed unless the command\n\ |
11024 | is prefixed with \"server \".\n\n\ | |
c906108c | 11025 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 11026 | breakpoint set.")); |
c906108c | 11027 | |
6b04bdb7 MS |
11028 | add_info_alias ("b", "breakpoints", 1); |
11029 | ||
c906108c | 11030 | if (xdb_commands) |
1bedd215 AC |
11031 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
11032 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
11033 | The \"Type\" column indicates one of:\n\ |
11034 | \tbreakpoint - normal breakpoint\n\ | |
11035 | \twatchpoint - watchpoint\n\ | |
11036 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
11037 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
11038 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
11039 | address and file/line number respectively.\n\ |
11040 | \n\ | |
11041 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
11042 | are set to the address of the last breakpoint listed unless the command\n\ |
11043 | is prefixed with \"server \".\n\n\ | |
c906108c | 11044 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 11045 | breakpoint set.")); |
c906108c | 11046 | |
1a966eab AC |
11047 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
11048 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
11049 | The \"Type\" column indicates one of:\n\ |
11050 | \tbreakpoint - normal breakpoint\n\ | |
11051 | \twatchpoint - watchpoint\n\ | |
11052 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
11053 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
11054 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
11055 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
11056 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
11057 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
11058 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
11059 | address and file/line number respectively.\n\ |
11060 | \n\ | |
11061 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
11062 | are set to the address of the last breakpoint listed unless the command\n\ |
11063 | is prefixed with \"server \".\n\n\ | |
c906108c | 11064 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 11065 | breakpoint set."), |
c906108c SS |
11066 | &maintenanceinfolist); |
11067 | ||
44feb3ce TT |
11068 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
11069 | Set catchpoints to catch events."), | |
11070 | &catch_cmdlist, "catch ", | |
11071 | 0/*allow-unknown*/, &cmdlist); | |
11072 | ||
11073 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
11074 | Set temporary catchpoints to catch events."), | |
11075 | &tcatch_cmdlist, "tcatch ", | |
11076 | 0/*allow-unknown*/, &cmdlist); | |
11077 | ||
11078 | /* Add catch and tcatch sub-commands. */ | |
11079 | add_catch_command ("catch", _("\ | |
11080 | Catch an exception, when caught.\n\ | |
11081 | With an argument, catch only exceptions with the given name."), | |
11082 | catch_catch_command, | |
a96d9b2e | 11083 | NULL, |
44feb3ce TT |
11084 | CATCH_PERMANENT, |
11085 | CATCH_TEMPORARY); | |
11086 | add_catch_command ("throw", _("\ | |
11087 | Catch an exception, when thrown.\n\ | |
11088 | With an argument, catch only exceptions with the given name."), | |
11089 | catch_throw_command, | |
a96d9b2e | 11090 | NULL, |
44feb3ce TT |
11091 | CATCH_PERMANENT, |
11092 | CATCH_TEMPORARY); | |
11093 | add_catch_command ("fork", _("Catch calls to fork."), | |
11094 | catch_fork_command_1, | |
a96d9b2e | 11095 | NULL, |
44feb3ce TT |
11096 | (void *) (uintptr_t) catch_fork_permanent, |
11097 | (void *) (uintptr_t) catch_fork_temporary); | |
11098 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
11099 | catch_fork_command_1, | |
a96d9b2e | 11100 | NULL, |
44feb3ce TT |
11101 | (void *) (uintptr_t) catch_vfork_permanent, |
11102 | (void *) (uintptr_t) catch_vfork_temporary); | |
11103 | add_catch_command ("exec", _("Catch calls to exec."), | |
11104 | catch_exec_command_1, | |
a96d9b2e SDJ |
11105 | NULL, |
11106 | CATCH_PERMANENT, | |
11107 | CATCH_TEMPORARY); | |
11108 | add_catch_command ("syscall", _("\ | |
11109 | Catch system calls by their names and/or numbers.\n\ | |
11110 | Arguments say which system calls to catch. If no arguments\n\ | |
11111 | are given, every system call will be caught.\n\ | |
11112 | Arguments, if given, should be one or more system call names\n\ | |
11113 | (if your system supports that), or system call numbers."), | |
11114 | catch_syscall_command_1, | |
11115 | catch_syscall_completer, | |
44feb3ce TT |
11116 | CATCH_PERMANENT, |
11117 | CATCH_TEMPORARY); | |
44feb3ce TT |
11118 | add_catch_command ("exception", _("\ |
11119 | Catch Ada exceptions, when raised.\n\ | |
11120 | With an argument, catch only exceptions with the given name."), | |
11121 | catch_ada_exception_command, | |
a96d9b2e | 11122 | NULL, |
44feb3ce TT |
11123 | CATCH_PERMANENT, |
11124 | CATCH_TEMPORARY); | |
11125 | add_catch_command ("assert", _("\ | |
11126 | Catch failed Ada assertions, when raised.\n\ | |
11127 | With an argument, catch only exceptions with the given name."), | |
11128 | catch_assert_command, | |
a96d9b2e | 11129 | NULL, |
44feb3ce TT |
11130 | CATCH_PERMANENT, |
11131 | CATCH_TEMPORARY); | |
c5aa993b | 11132 | |
1bedd215 AC |
11133 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
11134 | Set a watchpoint for an expression.\n\ | |
c906108c | 11135 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 11136 | an expression changes.")); |
65d12d83 | 11137 | set_cmd_completer (c, expression_completer); |
c906108c | 11138 | |
1bedd215 AC |
11139 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
11140 | Set a read watchpoint for an expression.\n\ | |
c906108c | 11141 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 11142 | an expression is read.")); |
65d12d83 | 11143 | set_cmd_completer (c, expression_completer); |
c906108c | 11144 | |
1bedd215 AC |
11145 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
11146 | Set a watchpoint for an expression.\n\ | |
c906108c | 11147 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 11148 | an expression is either read or written.")); |
65d12d83 | 11149 | set_cmd_completer (c, expression_completer); |
c906108c SS |
11150 | |
11151 | add_info ("watchpoints", breakpoints_info, | |
1bedd215 | 11152 | _("Synonym for ``info breakpoints''.")); |
c906108c SS |
11153 | |
11154 | ||
920d2a44 AC |
11155 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
11156 | respond to changes - contrary to the description. */ | |
85c07804 AC |
11157 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
11158 | &can_use_hw_watchpoints, _("\ | |
11159 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
11160 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
11161 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
11162 | such is available. (However, any hardware watchpoints that were\n\ | |
11163 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
11164 | hardware.)"), |
11165 | NULL, | |
920d2a44 | 11166 | show_can_use_hw_watchpoints, |
85c07804 | 11167 | &setlist, &showlist); |
c906108c SS |
11168 | |
11169 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 11170 | |
1042e4c0 SS |
11171 | /* Tracepoint manipulation commands. */ |
11172 | ||
11173 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
11174 | Set a tracepoint at specified line or function.\n\ | |
11175 | \n" | |
11176 | BREAK_ARGS_HELP ("trace") "\n\ | |
11177 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
11178 | set_cmd_completer (c, location_completer); | |
11179 | ||
11180 | add_com_alias ("tp", "trace", class_alias, 0); | |
11181 | add_com_alias ("tr", "trace", class_alias, 1); | |
11182 | add_com_alias ("tra", "trace", class_alias, 1); | |
11183 | add_com_alias ("trac", "trace", class_alias, 1); | |
11184 | ||
7a697b8d SS |
11185 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
11186 | Set a fast tracepoint at specified line or function.\n\ | |
11187 | \n" | |
11188 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
11189 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
11190 | set_cmd_completer (c, location_completer); | |
11191 | ||
1042e4c0 SS |
11192 | add_info ("tracepoints", tracepoints_info, _("\ |
11193 | Status of tracepoints, or tracepoint number NUMBER.\n\ | |
11194 | Convenience variable \"$tpnum\" contains the number of the\n\ | |
11195 | last tracepoint set.")); | |
11196 | ||
11197 | add_info_alias ("tp", "tracepoints", 1); | |
11198 | ||
11199 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
11200 | Delete specified tracepoints.\n\ | |
11201 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
11202 | No argument means delete all tracepoints."), | |
11203 | &deletelist); | |
11204 | ||
11205 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
11206 | Disable specified tracepoints.\n\ | |
11207 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
11208 | No argument means disable all tracepoints."), | |
11209 | &disablelist); | |
11210 | deprecate_cmd (c, "disable"); | |
11211 | ||
11212 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
11213 | Enable specified tracepoints.\n\ | |
11214 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
11215 | No argument means enable all tracepoints."), | |
11216 | &enablelist); | |
11217 | deprecate_cmd (c, "enable"); | |
11218 | ||
11219 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
11220 | Set the passcount for a tracepoint.\n\ | |
11221 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
11222 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
11223 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
11224 | ||
11225 | c = add_com ("save-tracepoints", class_trace, tracepoint_save_command, _("\ | |
11226 | Save current tracepoint definitions as a script.\n\ | |
11227 | Use the 'source' command in another debug session to restore them.")); | |
11228 | set_cmd_completer (c, filename_completer); | |
11229 | ||
1bedd215 | 11230 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
11231 | Breakpoint specific settings\n\ |
11232 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 11233 | pending breakpoint behavior"), |
fa8d40ab JJ |
11234 | &breakpoint_set_cmdlist, "set breakpoint ", |
11235 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 11236 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
11237 | Breakpoint specific settings\n\ |
11238 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 11239 | pending breakpoint behavior"), |
fa8d40ab JJ |
11240 | &breakpoint_show_cmdlist, "show breakpoint ", |
11241 | 0/*allow-unknown*/, &showlist); | |
11242 | ||
7915a72c AC |
11243 | add_setshow_auto_boolean_cmd ("pending", no_class, |
11244 | &pending_break_support, _("\ | |
11245 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
11246 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
11247 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
11248 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
11249 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 11250 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 11251 | NULL, |
920d2a44 | 11252 | show_pending_break_support, |
6e1d7d6c AC |
11253 | &breakpoint_set_cmdlist, |
11254 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
11255 | |
11256 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
11257 | |
11258 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
11259 | &automatic_hardware_breakpoints, _("\ | |
11260 | Set automatic usage of hardware breakpoints."), _("\ | |
11261 | Show automatic usage of hardware breakpoints."), _("\ | |
11262 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
11263 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
11264 | a warning will be emitted for such breakpoints."), | |
11265 | NULL, | |
11266 | show_automatic_hardware_breakpoints, | |
11267 | &breakpoint_set_cmdlist, | |
11268 | &breakpoint_show_cmdlist); | |
74960c60 | 11269 | |
33e5cbd6 PA |
11270 | add_setshow_enum_cmd ("always-inserted", class_support, |
11271 | always_inserted_enums, &always_inserted_mode, _("\ | |
74960c60 VP |
11272 | Set mode for inserting breakpoints."), _("\ |
11273 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
11274 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
11275 | resumed, and removed when execution stops. When this mode is on,\n\ | |
11276 | breakpoints are inserted immediately and removed only when the user\n\ | |
11277 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
11278 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
11279 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
11280 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
11281 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
74960c60 VP |
11282 | NULL, |
11283 | &show_always_inserted_mode, | |
11284 | &breakpoint_set_cmdlist, | |
11285 | &breakpoint_show_cmdlist); | |
765dc015 VP |
11286 | |
11287 | automatic_hardware_breakpoints = 1; | |
f3b1572e PA |
11288 | |
11289 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
c906108c | 11290 | } |