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, |
0fb0cc75 | 5 | 2008, 2009 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" |
c906108c | 62 | |
1042e4c0 SS |
63 | /* readline include files */ |
64 | #include "readline/readline.h" | |
65 | #include "readline/history.h" | |
66 | ||
67 | /* readline defines this. */ | |
68 | #undef savestring | |
69 | ||
034dad6f | 70 | #include "mi/mi-common.h" |
104c1213 | 71 | |
44feb3ce TT |
72 | /* Arguments to pass as context to some catch command handlers. */ |
73 | #define CATCH_PERMANENT ((void *) (uintptr_t) 0) | |
74 | #define CATCH_TEMPORARY ((void *) (uintptr_t) 1) | |
c906108c | 75 | |
44feb3ce | 76 | /* Prototypes for local functions. */ |
c906108c | 77 | |
a14ed312 | 78 | static void enable_delete_command (char *, int); |
c906108c | 79 | |
a14ed312 | 80 | static void enable_delete_breakpoint (struct breakpoint *); |
c906108c | 81 | |
a14ed312 | 82 | static void enable_once_command (char *, int); |
c906108c | 83 | |
a14ed312 | 84 | static void enable_once_breakpoint (struct breakpoint *); |
c906108c | 85 | |
a14ed312 | 86 | static void disable_command (char *, int); |
c906108c | 87 | |
a14ed312 | 88 | static void enable_command (char *, int); |
c906108c | 89 | |
a14ed312 | 90 | static void map_breakpoint_numbers (char *, void (*)(struct breakpoint *)); |
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 | |
9f60f21b | 113 | static void check_duplicates (struct breakpoint *); |
c906108c | 114 | |
76897487 KB |
115 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
116 | ||
a6d9a66e UW |
117 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
118 | CORE_ADDR bpaddr, | |
88f7da05 | 119 | enum bptype bptype); |
76897487 | 120 | |
5af949e3 UW |
121 | static void describe_other_breakpoints (struct gdbarch *, CORE_ADDR, |
122 | struct obj_section *, int); | |
c906108c | 123 | |
a14ed312 | 124 | static void breakpoints_info (char *, int); |
c906108c | 125 | |
a14ed312 | 126 | static void breakpoint_1 (int, int); |
c906108c | 127 | |
89f9893c | 128 | static bpstat bpstat_alloc (const struct bp_location *, bpstat); |
c906108c | 129 | |
4efb68b1 | 130 | static int breakpoint_cond_eval (void *); |
c906108c | 131 | |
4efb68b1 | 132 | static void cleanup_executing_breakpoints (void *); |
c906108c | 133 | |
a14ed312 | 134 | static void commands_command (char *, int); |
c906108c | 135 | |
a14ed312 | 136 | static void condition_command (char *, int); |
c906108c | 137 | |
a14ed312 | 138 | static int get_number_trailer (char **, int); |
c906108c | 139 | |
a14ed312 | 140 | void set_breakpoint_count (int); |
c906108c | 141 | |
c5aa993b JM |
142 | typedef enum |
143 | { | |
144 | mark_inserted, | |
145 | mark_uninserted | |
146 | } | |
147 | insertion_state_t; | |
c906108c | 148 | |
0bde7532 | 149 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
c906108c | 150 | |
a14ed312 | 151 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
152 | |
153 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 154 | |
4efb68b1 | 155 | static int watchpoint_check (void *); |
c906108c | 156 | |
a14ed312 | 157 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 158 | |
a14ed312 | 159 | static int hw_breakpoint_used_count (void); |
c906108c | 160 | |
a14ed312 | 161 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 162 | |
a14ed312 | 163 | static void hbreak_command (char *, int); |
c906108c | 164 | |
a14ed312 | 165 | static void thbreak_command (char *, int); |
c906108c | 166 | |
a14ed312 | 167 | static void watch_command_1 (char *, int, int); |
c906108c | 168 | |
a14ed312 | 169 | static void rwatch_command (char *, int); |
c906108c | 170 | |
a14ed312 | 171 | static void awatch_command (char *, int); |
c906108c | 172 | |
a14ed312 | 173 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 174 | |
a14ed312 | 175 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 176 | |
a14ed312 | 177 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 178 | |
a14ed312 | 179 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 180 | |
a14ed312 | 181 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 182 | |
a14ed312 | 183 | static char *ep_parse_optional_filename (char **arg); |
7a292a7a | 184 | |
d85310f7 MS |
185 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
186 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 187 | |
a14ed312 | 188 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 189 | |
a14ed312 | 190 | static void ep_skip_leading_whitespace (char **s); |
7a292a7a | 191 | |
1aafd4da UW |
192 | static int single_step_breakpoint_inserted_here_p (CORE_ADDR pc); |
193 | ||
fe3f5fa8 VP |
194 | static void free_bp_location (struct bp_location *loc); |
195 | ||
39d61571 | 196 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 197 | |
b60e7edf | 198 | static void update_global_location_list (int); |
a5606eee | 199 | |
b60e7edf | 200 | static void update_global_location_list_nothrow (int); |
74960c60 VP |
201 | |
202 | static int is_hardware_watchpoint (struct breakpoint *bpt); | |
203 | ||
204 | static void insert_breakpoint_locations (void); | |
a5606eee | 205 | |
1042e4c0 SS |
206 | static void tracepoints_info (char *, int); |
207 | ||
208 | static void delete_trace_command (char *, int); | |
209 | ||
210 | static void enable_trace_command (char *, int); | |
211 | ||
212 | static void disable_trace_command (char *, int); | |
213 | ||
214 | static void trace_pass_command (char *, int); | |
215 | ||
3daf8fe5 JG |
216 | static void skip_prologue_sal (struct symtab_and_line *sal); |
217 | ||
218 | ||
f3b1572e PA |
219 | /* Flag indicating that a command has proceeded the inferior past the |
220 | current breakpoint. */ | |
221 | ||
222 | static int breakpoint_proceeded; | |
223 | ||
2cec12e5 AR |
224 | static const char * |
225 | bpdisp_text (enum bpdisp disp) | |
226 | { | |
227 | /* NOTE: the following values are a part of MI protocol and represent | |
228 | values of 'disp' field returned when inferior stops at a breakpoint. */ | |
229 | static char *bpdisps[] = {"del", "dstp", "dis", "keep"}; | |
230 | return bpdisps[(int) disp]; | |
231 | } | |
c906108c | 232 | |
2cec12e5 | 233 | /* Prototypes for exported functions. */ |
c906108c SS |
234 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
235 | if such is available. */ | |
236 | static int can_use_hw_watchpoints; | |
237 | ||
920d2a44 AC |
238 | static void |
239 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
240 | struct cmd_list_element *c, | |
241 | const char *value) | |
242 | { | |
243 | fprintf_filtered (file, _("\ | |
244 | Debugger's willingness to use watchpoint hardware is %s.\n"), | |
245 | value); | |
246 | } | |
247 | ||
fa8d40ab JJ |
248 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
249 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
250 | for unrecognized breakpoint locations. | |
251 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ | |
252 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
253 | static void |
254 | show_pending_break_support (struct ui_file *file, int from_tty, | |
255 | struct cmd_list_element *c, | |
256 | const char *value) | |
257 | { | |
258 | fprintf_filtered (file, _("\ | |
259 | Debugger's behavior regarding pending breakpoints is %s.\n"), | |
260 | value); | |
261 | } | |
fa8d40ab | 262 | |
765dc015 VP |
263 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
264 | set with "break" but falling in read-only memory. | |
265 | If 0, gdb will warn about such breakpoints, but won't automatically | |
266 | use hardware breakpoints. */ | |
267 | static int automatic_hardware_breakpoints; | |
268 | static void | |
269 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
270 | struct cmd_list_element *c, | |
271 | const char *value) | |
272 | { | |
273 | fprintf_filtered (file, _("\ | |
274 | Automatic usage of hardware breakpoints is %s.\n"), | |
275 | value); | |
276 | } | |
277 | ||
33e5cbd6 PA |
278 | /* If on, gdb will keep breakpoints inserted even as inferior is |
279 | stopped, and immediately insert any new breakpoints. If off, gdb | |
280 | will insert breakpoints into inferior only when resuming it, and | |
281 | will remove breakpoints upon stop. If auto, GDB will behave as ON | |
282 | if in non-stop mode, and as OFF if all-stop mode.*/ | |
283 | ||
284 | static const char always_inserted_auto[] = "auto"; | |
285 | static const char always_inserted_on[] = "on"; | |
286 | static const char always_inserted_off[] = "off"; | |
287 | static const char *always_inserted_enums[] = { | |
288 | always_inserted_auto, | |
289 | always_inserted_off, | |
290 | always_inserted_on, | |
291 | NULL | |
292 | }; | |
293 | static const char *always_inserted_mode = always_inserted_auto; | |
294 | static void | |
74960c60 | 295 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 296 | struct cmd_list_element *c, const char *value) |
74960c60 | 297 | { |
33e5cbd6 PA |
298 | if (always_inserted_mode == always_inserted_auto) |
299 | fprintf_filtered (file, _("\ | |
300 | Always inserted breakpoint mode is %s (currently %s).\n"), | |
301 | value, | |
302 | breakpoints_always_inserted_mode () ? "on" : "off"); | |
303 | else | |
304 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), value); | |
74960c60 VP |
305 | } |
306 | ||
33e5cbd6 PA |
307 | int |
308 | breakpoints_always_inserted_mode (void) | |
309 | { | |
310 | return (always_inserted_mode == always_inserted_on | |
311 | || (always_inserted_mode == always_inserted_auto && non_stop)); | |
312 | } | |
765dc015 | 313 | |
a14ed312 | 314 | void _initialize_breakpoint (void); |
c906108c | 315 | |
c906108c SS |
316 | /* Are we executing breakpoint commands? */ |
317 | static int executing_breakpoint_commands; | |
318 | ||
c02f5703 MS |
319 | /* Are overlay event breakpoints enabled? */ |
320 | static int overlay_events_enabled; | |
321 | ||
c906108c SS |
322 | /* Walk the following statement or block through all breakpoints. |
323 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
324 | breakpoint. */ | |
325 | ||
5c44784c | 326 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 327 | |
5c44784c JM |
328 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
329 | for (B = breakpoint_chain; \ | |
330 | B ? (TMP=B->next, 1): 0; \ | |
331 | B = TMP) | |
c906108c | 332 | |
7cc221ef DJ |
333 | /* Similar iterators for the low-level breakpoints. */ |
334 | ||
0d381245 | 335 | #define ALL_BP_LOCATIONS(B) for (B = bp_location_chain; B; B = B->global_next) |
7cc221ef DJ |
336 | |
337 | #define ALL_BP_LOCATIONS_SAFE(B,TMP) \ | |
338 | for (B = bp_location_chain; \ | |
0d381245 | 339 | B ? (TMP=B->global_next, 1): 0; \ |
7cc221ef DJ |
340 | B = TMP) |
341 | ||
1042e4c0 SS |
342 | /* Iterator for tracepoints only. */ |
343 | ||
344 | #define ALL_TRACEPOINTS(B) \ | |
345 | for (B = breakpoint_chain; B; B = B->next) \ | |
346 | if ((B)->type == bp_tracepoint) | |
347 | ||
7cc221ef | 348 | /* Chains of all breakpoints defined. */ |
c906108c SS |
349 | |
350 | struct breakpoint *breakpoint_chain; | |
351 | ||
7cc221ef DJ |
352 | struct bp_location *bp_location_chain; |
353 | ||
20874c92 VP |
354 | /* The locations that no longer correspond to any breakpoint, |
355 | unlinked from bp_location_chain, but for which a hit | |
356 | may still be reported by a target. */ | |
357 | VEC(bp_location_p) *moribund_locations = NULL; | |
358 | ||
c906108c SS |
359 | /* Number of last breakpoint made. */ |
360 | ||
361 | int breakpoint_count; | |
362 | ||
1042e4c0 SS |
363 | /* Number of last tracepoint made. */ |
364 | ||
365 | int tracepoint_count; | |
366 | ||
468d015d JJ |
367 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
368 | static int | |
369 | breakpoint_enabled (struct breakpoint *b) | |
370 | { | |
0d381245 | 371 | return (b->enable_state == bp_enabled); |
468d015d JJ |
372 | } |
373 | ||
c906108c SS |
374 | /* Set breakpoint count to NUM. */ |
375 | ||
376 | void | |
fba45db2 | 377 | set_breakpoint_count (int num) |
c906108c SS |
378 | { |
379 | breakpoint_count = num; | |
4fa62494 | 380 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
381 | } |
382 | ||
383 | /* Used in run_command to zero the hit count when a new run starts. */ | |
384 | ||
385 | void | |
fba45db2 | 386 | clear_breakpoint_hit_counts (void) |
c906108c SS |
387 | { |
388 | struct breakpoint *b; | |
389 | ||
390 | ALL_BREAKPOINTS (b) | |
391 | b->hit_count = 0; | |
392 | } | |
393 | ||
394 | /* Default address, symtab and line to put a breakpoint at | |
395 | for "break" command with no arg. | |
396 | if default_breakpoint_valid is zero, the other three are | |
397 | not valid, and "break" with no arg is an error. | |
398 | ||
399 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
400 | ||
401 | int default_breakpoint_valid; | |
402 | CORE_ADDR default_breakpoint_address; | |
403 | struct symtab *default_breakpoint_symtab; | |
404 | int default_breakpoint_line; | |
405 | \f | |
406 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
407 | Advance *PP after the string and any trailing whitespace. | |
408 | ||
409 | Currently the string can either be a number or "$" followed by the name | |
410 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c | 411 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
40c03ae8 EZ |
412 | |
413 | If the string is a NULL pointer, that denotes the last breakpoint. | |
5c44784c JM |
414 | |
415 | TRAILER is a character which can be found after the number; most | |
416 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 417 | static int |
fba45db2 | 418 | get_number_trailer (char **pp, int trailer) |
c906108c | 419 | { |
5c44784c | 420 | int retval = 0; /* default */ |
c906108c SS |
421 | char *p = *pp; |
422 | ||
423 | if (p == NULL) | |
424 | /* Empty line means refer to the last breakpoint. */ | |
425 | return breakpoint_count; | |
426 | else if (*p == '$') | |
427 | { | |
428 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 429 | to pass to lookup_internalvar(). */ |
c906108c SS |
430 | char *varname; |
431 | char *start = ++p; | |
4fa62494 | 432 | LONGEST val; |
c906108c SS |
433 | |
434 | while (isalnum (*p) || *p == '_') | |
435 | p++; | |
436 | varname = (char *) alloca (p - start + 1); | |
437 | strncpy (varname, start, p - start); | |
438 | varname[p - start] = '\0'; | |
4fa62494 UW |
439 | if (get_internalvar_integer (lookup_internalvar (varname), &val)) |
440 | retval = (int) val; | |
5c44784c JM |
441 | else |
442 | { | |
a3f17187 | 443 | printf_filtered (_("Convenience variable must have integer value.\n")); |
5c44784c JM |
444 | retval = 0; |
445 | } | |
c906108c SS |
446 | } |
447 | else | |
448 | { | |
449 | if (*p == '-') | |
450 | ++p; | |
451 | while (*p >= '0' && *p <= '9') | |
452 | ++p; | |
453 | if (p == *pp) | |
454 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
455 | { |
456 | /* Skip non-numeric token */ | |
457 | while (*p && !isspace((int) *p)) | |
458 | ++p; | |
459 | /* Return zero, which caller must interpret as error. */ | |
460 | retval = 0; | |
461 | } | |
462 | else | |
463 | retval = atoi (*pp); | |
464 | } | |
465 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
466 | { | |
467 | /* Trailing junk: return 0 and let caller print error msg. */ | |
468 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
469 | ++p; | |
470 | retval = 0; | |
c906108c | 471 | } |
c906108c SS |
472 | while (isspace (*p)) |
473 | p++; | |
474 | *pp = p; | |
475 | return retval; | |
476 | } | |
5c44784c | 477 | |
11cf8741 | 478 | |
5c44784c JM |
479 | /* Like get_number_trailer, but don't allow a trailer. */ |
480 | int | |
fba45db2 | 481 | get_number (char **pp) |
5c44784c JM |
482 | { |
483 | return get_number_trailer (pp, '\0'); | |
484 | } | |
485 | ||
486 | /* Parse a number or a range. | |
487 | * A number will be of the form handled by get_number. | |
488 | * A range will be of the form <number1> - <number2>, and | |
489 | * will represent all the integers between number1 and number2, | |
490 | * inclusive. | |
491 | * | |
492 | * While processing a range, this fuction is called iteratively; | |
493 | * At each call it will return the next value in the range. | |
494 | * | |
495 | * At the beginning of parsing a range, the char pointer PP will | |
496 | * be advanced past <number1> and left pointing at the '-' token. | |
497 | * Subsequent calls will not advance the pointer until the range | |
498 | * is completed. The call that completes the range will advance | |
499 | * pointer PP past <number2>. | |
500 | */ | |
501 | ||
502 | int | |
fba45db2 | 503 | get_number_or_range (char **pp) |
5c44784c JM |
504 | { |
505 | static int last_retval, end_value; | |
506 | static char *end_ptr; | |
507 | static int in_range = 0; | |
508 | ||
509 | if (**pp != '-') | |
510 | { | |
511 | /* Default case: pp is pointing either to a solo number, | |
512 | or to the first number of a range. */ | |
513 | last_retval = get_number_trailer (pp, '-'); | |
514 | if (**pp == '-') | |
515 | { | |
516 | char **temp; | |
517 | ||
518 | /* This is the start of a range (<number1> - <number2>). | |
519 | Skip the '-', parse and remember the second number, | |
520 | and also remember the end of the final token. */ | |
521 | ||
522 | temp = &end_ptr; | |
523 | end_ptr = *pp + 1; | |
524 | while (isspace ((int) *end_ptr)) | |
525 | end_ptr++; /* skip white space */ | |
526 | end_value = get_number (temp); | |
527 | if (end_value < last_retval) | |
528 | { | |
8a3fe4f8 | 529 | error (_("inverted range")); |
5c44784c JM |
530 | } |
531 | else if (end_value == last_retval) | |
532 | { | |
533 | /* degenerate range (number1 == number2). Advance the | |
534 | token pointer so that the range will be treated as a | |
535 | single number. */ | |
536 | *pp = end_ptr; | |
537 | } | |
538 | else | |
539 | in_range = 1; | |
540 | } | |
541 | } | |
542 | else if (! in_range) | |
8a3fe4f8 | 543 | error (_("negative value")); |
5c44784c JM |
544 | else |
545 | { | |
546 | /* pp points to the '-' that betokens a range. All | |
547 | number-parsing has already been done. Return the next | |
548 | integer value (one greater than the saved previous value). | |
549 | Do not advance the token pointer 'pp' until the end of range | |
550 | is reached. */ | |
551 | ||
552 | if (++last_retval == end_value) | |
553 | { | |
554 | /* End of range reached; advance token pointer. */ | |
555 | *pp = end_ptr; | |
556 | in_range = 0; | |
557 | } | |
558 | } | |
559 | return last_retval; | |
560 | } | |
561 | ||
562 | ||
c906108c SS |
563 | \f |
564 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
565 | ||
566 | static void | |
fba45db2 | 567 | condition_command (char *arg, int from_tty) |
c906108c | 568 | { |
52f0bd74 | 569 | struct breakpoint *b; |
c906108c | 570 | char *p; |
52f0bd74 | 571 | int bnum; |
c906108c SS |
572 | |
573 | if (arg == 0) | |
e2e0b3e5 | 574 | error_no_arg (_("breakpoint number")); |
c906108c SS |
575 | |
576 | p = arg; | |
577 | bnum = get_number (&p); | |
5c44784c | 578 | if (bnum == 0) |
8a3fe4f8 | 579 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
580 | |
581 | ALL_BREAKPOINTS (b) | |
582 | if (b->number == bnum) | |
2f069f6f JB |
583 | { |
584 | struct bp_location *loc = b->loc; | |
585 | for (; loc; loc = loc->next) | |
586 | { | |
587 | if (loc->cond) | |
588 | { | |
589 | xfree (loc->cond); | |
590 | loc->cond = 0; | |
591 | } | |
592 | } | |
593 | if (b->cond_string != NULL) | |
594 | xfree (b->cond_string); | |
c906108c | 595 | |
2f069f6f JB |
596 | if (*p == 0) |
597 | { | |
598 | b->cond_string = NULL; | |
599 | if (from_tty) | |
600 | printf_filtered (_("Breakpoint %d now unconditional.\n"), bnum); | |
601 | } | |
602 | else | |
603 | { | |
604 | arg = p; | |
605 | /* I don't know if it matters whether this is the string the user | |
606 | typed in or the decompiled expression. */ | |
1b36a34b | 607 | b->cond_string = xstrdup (arg); |
2f069f6f JB |
608 | b->condition_not_parsed = 0; |
609 | for (loc = b->loc; loc; loc = loc->next) | |
610 | { | |
611 | arg = p; | |
612 | loc->cond = | |
613 | parse_exp_1 (&arg, block_for_pc (loc->address), 0); | |
614 | if (*arg) | |
615 | error (_("Junk at end of expression")); | |
616 | } | |
617 | } | |
618 | breakpoints_changed (); | |
383f836e | 619 | observer_notify_breakpoint_modified (b->number); |
2f069f6f JB |
620 | return; |
621 | } | |
c906108c | 622 | |
8a3fe4f8 | 623 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
624 | } |
625 | ||
c906108c | 626 | static void |
fba45db2 | 627 | commands_command (char *arg, int from_tty) |
c906108c | 628 | { |
52f0bd74 | 629 | struct breakpoint *b; |
c906108c | 630 | char *p; |
52f0bd74 | 631 | int bnum; |
c906108c SS |
632 | struct command_line *l; |
633 | ||
634 | /* If we allowed this, we would have problems with when to | |
635 | free the storage, if we change the commands currently | |
636 | being read from. */ | |
637 | ||
638 | if (executing_breakpoint_commands) | |
8a3fe4f8 | 639 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); |
c906108c SS |
640 | |
641 | p = arg; | |
642 | bnum = get_number (&p); | |
5c44784c | 643 | |
c906108c | 644 | if (p && *p) |
8a3fe4f8 | 645 | error (_("Unexpected extra arguments following breakpoint number.")); |
c5aa993b | 646 | |
c906108c SS |
647 | ALL_BREAKPOINTS (b) |
648 | if (b->number == bnum) | |
9ebf4acf AC |
649 | { |
650 | char *tmpbuf = xstrprintf ("Type commands for when breakpoint %d is hit, one per line.", | |
651 | bnum); | |
652 | struct cleanup *cleanups = make_cleanup (xfree, tmpbuf); | |
311a4e6b | 653 | l = read_command_lines (tmpbuf, from_tty, 1); |
9ebf4acf AC |
654 | do_cleanups (cleanups); |
655 | free_command_lines (&b->commands); | |
656 | b->commands = l; | |
657 | breakpoints_changed (); | |
383f836e | 658 | observer_notify_breakpoint_modified (b->number); |
9ebf4acf | 659 | return; |
c5aa993b | 660 | } |
8a3fe4f8 | 661 | error (_("No breakpoint number %d."), bnum); |
c906108c | 662 | } |
40c03ae8 EZ |
663 | |
664 | /* Like commands_command, but instead of reading the commands from | |
665 | input stream, takes them from an already parsed command structure. | |
666 | ||
667 | This is used by cli-script.c to DTRT with breakpoint commands | |
668 | that are part of if and while bodies. */ | |
669 | enum command_control_type | |
670 | commands_from_control_command (char *arg, struct command_line *cmd) | |
671 | { | |
672 | struct breakpoint *b; | |
673 | char *p; | |
674 | int bnum; | |
675 | ||
676 | /* If we allowed this, we would have problems with when to | |
677 | free the storage, if we change the commands currently | |
678 | being read from. */ | |
679 | ||
680 | if (executing_breakpoint_commands) | |
681 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); | |
682 | ||
683 | /* An empty string for the breakpoint number means the last | |
684 | breakpoint, but get_number expects a NULL pointer. */ | |
685 | if (arg && !*arg) | |
686 | p = NULL; | |
687 | else | |
688 | p = arg; | |
689 | bnum = get_number (&p); | |
690 | ||
691 | if (p && *p) | |
692 | error (_("Unexpected extra arguments following breakpoint number.")); | |
693 | ||
694 | ALL_BREAKPOINTS (b) | |
695 | if (b->number == bnum) | |
696 | { | |
697 | free_command_lines (&b->commands); | |
698 | if (cmd->body_count != 1) | |
699 | error (_("Invalid \"commands\" block structure.")); | |
700 | /* We need to copy the commands because if/while will free the | |
701 | list after it finishes execution. */ | |
702 | b->commands = copy_command_lines (cmd->body_list[0]); | |
703 | breakpoints_changed (); | |
383f836e | 704 | observer_notify_breakpoint_modified (b->number); |
40c03ae8 | 705 | return simple_control; |
2f069f6f | 706 | } |
40c03ae8 EZ |
707 | error (_("No breakpoint number %d."), bnum); |
708 | } | |
c906108c | 709 | \f |
8defab1a DJ |
710 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
711 | by replacing any memory breakpoints with their shadowed contents. */ | |
c906108c | 712 | |
8defab1a DJ |
713 | void |
714 | breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr, LONGEST len) | |
c906108c | 715 | { |
8defab1a | 716 | struct bp_location *b; |
c906108c SS |
717 | CORE_ADDR bp_addr = 0; |
718 | int bp_size = 0; | |
8defab1a | 719 | int bptoffset = 0; |
c5aa993b | 720 | |
ffce0d52 | 721 | ALL_BP_LOCATIONS (b) |
c5aa993b | 722 | { |
ffce0d52 | 723 | if (b->owner->type == bp_none) |
8a3fe4f8 | 724 | warning (_("reading through apparently deleted breakpoint #%d?"), |
ffce0d52 DJ |
725 | b->owner->number); |
726 | ||
727 | if (b->loc_type != bp_loc_software_breakpoint) | |
c5aa993b | 728 | continue; |
ffce0d52 | 729 | if (!b->inserted) |
c5aa993b JM |
730 | continue; |
731 | /* Addresses and length of the part of the breakpoint that | |
732 | we need to copy. */ | |
8181d85f DJ |
733 | bp_addr = b->target_info.placed_address; |
734 | bp_size = b->target_info.shadow_len; | |
c5aa993b | 735 | if (bp_size == 0) |
8181d85f | 736 | /* bp isn't valid, or doesn't shadow memory. */ |
c5aa993b | 737 | continue; |
8defab1a | 738 | |
c5aa993b JM |
739 | if (bp_addr + bp_size <= memaddr) |
740 | /* The breakpoint is entirely before the chunk of memory we | |
741 | are reading. */ | |
742 | continue; | |
8defab1a | 743 | |
c5aa993b JM |
744 | if (bp_addr >= memaddr + len) |
745 | /* The breakpoint is entirely after the chunk of memory we are | |
746 | reading. */ | |
747 | continue; | |
c5aa993b | 748 | |
8defab1a DJ |
749 | /* Offset within shadow_contents. */ |
750 | if (bp_addr < memaddr) | |
751 | { | |
752 | /* Only copy the second part of the breakpoint. */ | |
753 | bp_size -= memaddr - bp_addr; | |
754 | bptoffset = memaddr - bp_addr; | |
755 | bp_addr = memaddr; | |
756 | } | |
c5aa993b | 757 | |
8defab1a DJ |
758 | if (bp_addr + bp_size > memaddr + len) |
759 | { | |
760 | /* Only copy the first part of the breakpoint. */ | |
761 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
762 | } | |
c5aa993b | 763 | |
8defab1a DJ |
764 | memcpy (buf + bp_addr - memaddr, |
765 | b->target_info.shadow_contents + bptoffset, bp_size); | |
c5aa993b | 766 | } |
c906108c | 767 | } |
c906108c | 768 | \f |
c5aa993b | 769 | |
687595f9 | 770 | /* A wrapper function for inserting catchpoints. */ |
9cbc821d | 771 | static void |
687595f9 DJ |
772 | insert_catchpoint (struct ui_out *uo, void *args) |
773 | { | |
774 | struct breakpoint *b = (struct breakpoint *) args; | |
775 | int val = -1; | |
776 | ||
fe798b75 JB |
777 | gdb_assert (b->type == bp_catchpoint); |
778 | gdb_assert (b->ops != NULL && b->ops->insert != NULL); | |
779 | ||
780 | b->ops->insert (b); | |
687595f9 DJ |
781 | } |
782 | ||
a5606eee VP |
783 | static int |
784 | is_hardware_watchpoint (struct breakpoint *bpt) | |
785 | { | |
786 | return (bpt->type == bp_hardware_watchpoint | |
787 | || bpt->type == bp_read_watchpoint | |
788 | || bpt->type == bp_access_watchpoint); | |
789 | } | |
7270d8f2 | 790 | |
fa4727a6 DJ |
791 | /* Find the current value of a watchpoint on EXP. Return the value in |
792 | *VALP and *RESULTP and the chain of intermediate and final values | |
793 | in *VAL_CHAIN. RESULTP and VAL_CHAIN may be NULL if the caller does | |
794 | not need them. | |
795 | ||
ccc57cf9 | 796 | If a memory error occurs while evaluating the expression, *RESULTP will |
fa4727a6 DJ |
797 | be set to NULL. *RESULTP may be a lazy value, if the result could |
798 | not be read from memory. It is used to determine whether a value | |
799 | is user-specified (we should watch the whole value) or intermediate | |
800 | (we should watch only the bit used to locate the final value). | |
801 | ||
802 | If the final value, or any intermediate value, could not be read | |
803 | from memory, *VALP will be set to NULL. *VAL_CHAIN will still be | |
804 | set to any referenced values. *VALP will never be a lazy value. | |
805 | This is the value which we store in struct breakpoint. | |
806 | ||
807 | If VAL_CHAIN is non-NULL, *VAL_CHAIN will be released from the | |
808 | value chain. The caller must free the values individually. If | |
809 | VAL_CHAIN is NULL, all generated values will be left on the value | |
810 | chain. */ | |
811 | ||
812 | static void | |
813 | fetch_watchpoint_value (struct expression *exp, struct value **valp, | |
814 | struct value **resultp, struct value **val_chain) | |
815 | { | |
816 | struct value *mark, *new_mark, *result; | |
ccc57cf9 | 817 | volatile struct gdb_exception ex; |
fa4727a6 DJ |
818 | |
819 | *valp = NULL; | |
820 | if (resultp) | |
821 | *resultp = NULL; | |
822 | if (val_chain) | |
823 | *val_chain = NULL; | |
824 | ||
825 | /* Evaluate the expression. */ | |
826 | mark = value_mark (); | |
827 | result = NULL; | |
ccc57cf9 PA |
828 | |
829 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
830 | { | |
831 | result = evaluate_expression (exp); | |
832 | } | |
833 | if (ex.reason < 0) | |
834 | { | |
835 | /* Ignore memory errors, we want watchpoints pointing at | |
836 | inaccessible memory to still be created; otherwise, throw the | |
837 | error to some higher catcher. */ | |
838 | switch (ex.error) | |
839 | { | |
840 | case MEMORY_ERROR: | |
841 | break; | |
842 | default: | |
843 | throw_exception (ex); | |
844 | break; | |
845 | } | |
846 | } | |
847 | ||
fa4727a6 DJ |
848 | new_mark = value_mark (); |
849 | if (mark == new_mark) | |
850 | return; | |
851 | if (resultp) | |
852 | *resultp = result; | |
853 | ||
854 | /* Make sure it's not lazy, so that after the target stops again we | |
855 | have a non-lazy previous value to compare with. */ | |
856 | if (result != NULL | |
857 | && (!value_lazy (result) || gdb_value_fetch_lazy (result))) | |
858 | *valp = result; | |
859 | ||
860 | if (val_chain) | |
861 | { | |
862 | /* Return the chain of intermediate values. We use this to | |
863 | decide which addresses to watch. */ | |
864 | *val_chain = new_mark; | |
865 | value_release_to_mark (mark); | |
866 | } | |
867 | } | |
868 | ||
567e1b4e JB |
869 | /* Assuming that B is a watchpoint: |
870 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 871 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
872 | - Evaluate the condition if there is one, and store the result |
873 | in b->loc->cond. | |
a5606eee VP |
874 | - Update the list of values that must be watched in B->loc. |
875 | ||
bfa149ac JB |
876 | If the watchpoint disposition is disp_del_at_next_stop, then do nothing. |
877 | If this is local watchpoint that is out of scope, delete it. */ | |
b40ce68a | 878 | static void |
a5606eee | 879 | update_watchpoint (struct breakpoint *b, int reparse) |
7270d8f2 | 880 | { |
a5606eee | 881 | int within_current_scope; |
a5606eee VP |
882 | struct frame_id saved_frame_id; |
883 | struct bp_location *loc; | |
884 | bpstat bs; | |
885 | ||
567e1b4e JB |
886 | /* We don't free locations. They are stored in bp_location_chain and |
887 | update_global_locations will eventually delete them and remove | |
888 | breakpoints if needed. */ | |
a5606eee VP |
889 | b->loc = NULL; |
890 | ||
891 | if (b->disposition == disp_del_at_next_stop) | |
892 | return; | |
893 | ||
894 | /* Save the current frame's ID so we can restore it after | |
895 | evaluating the watchpoint expression on its own frame. */ | |
896 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
897 | took a frame parameter, so that we didn't have to change the | |
898 | selected frame. */ | |
899 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
900 | ||
901 | /* Determine if the watchpoint is within scope. */ | |
902 | if (b->exp_valid_block == NULL) | |
903 | within_current_scope = 1; | |
904 | else | |
905 | { | |
906 | struct frame_info *fi; | |
907 | fi = frame_find_by_id (b->watchpoint_frame); | |
908 | within_current_scope = (fi != NULL); | |
909 | if (within_current_scope) | |
910 | select_frame (fi); | |
911 | } | |
912 | ||
913 | if (within_current_scope && reparse) | |
914 | { | |
915 | char *s; | |
916 | if (b->exp) | |
917 | { | |
918 | xfree (b->exp); | |
919 | b->exp = NULL; | |
920 | } | |
921 | s = b->exp_string; | |
922 | b->exp = parse_exp_1 (&s, b->exp_valid_block, 0); | |
923 | /* If the meaning of expression itself changed, the old value is | |
924 | no longer relevant. We don't want to report a watchpoint hit | |
925 | to the user when the old value and the new value may actually | |
926 | be completely different objects. */ | |
927 | value_free (b->val); | |
fa4727a6 DJ |
928 | b->val = NULL; |
929 | b->val_valid = 0; | |
a5606eee | 930 | } |
a5606eee VP |
931 | |
932 | /* If we failed to parse the expression, for example because | |
933 | it refers to a global variable in a not-yet-loaded shared library, | |
934 | don't try to insert watchpoint. We don't automatically delete | |
935 | such watchpoint, though, since failure to parse expression | |
936 | is different from out-of-scope watchpoint. */ | |
937 | if (within_current_scope && b->exp) | |
938 | { | |
fa4727a6 | 939 | struct value *val_chain, *v, *result, *next; |
a5606eee | 940 | |
fa4727a6 | 941 | fetch_watchpoint_value (b->exp, &v, &result, &val_chain); |
a5606eee | 942 | |
a5606eee VP |
943 | /* Avoid setting b->val if it's already set. The meaning of |
944 | b->val is 'the last value' user saw, and we should update | |
945 | it only if we reported that last value to user. As it | |
946 | happens, the code that reports it updates b->val directly. */ | |
fa4727a6 DJ |
947 | if (!b->val_valid) |
948 | { | |
949 | b->val = v; | |
950 | b->val_valid = 1; | |
951 | } | |
a5606eee | 952 | |
db2ad4c3 JK |
953 | /* Change the type of breakpoint between hardware assisted or an |
954 | ordinary watchpoint depending on the hardware support and free | |
955 | hardware slots. REPARSE is set when the inferior is started. */ | |
956 | if ((b->type == bp_watchpoint || b->type == bp_hardware_watchpoint) | |
957 | && reparse) | |
958 | { | |
ca2d49e8 | 959 | int i, mem_cnt, other_type_used; |
db2ad4c3 JK |
960 | |
961 | i = hw_watchpoint_used_count (bp_hardware_watchpoint, | |
962 | &other_type_used); | |
963 | mem_cnt = can_use_hardware_watchpoint (val_chain); | |
964 | ||
ca2d49e8 | 965 | if (!mem_cnt) |
db2ad4c3 JK |
966 | b->type = bp_watchpoint; |
967 | else | |
ca2d49e8 | 968 | { |
d92524f1 | 969 | int target_resources_ok = target_can_use_hardware_watchpoint |
ca2d49e8 SL |
970 | (bp_hardware_watchpoint, i + mem_cnt, other_type_used); |
971 | if (target_resources_ok <= 0) | |
972 | b->type = bp_watchpoint; | |
973 | else | |
974 | b->type = bp_hardware_watchpoint; | |
975 | } | |
db2ad4c3 JK |
976 | } |
977 | ||
a5606eee | 978 | /* Look at each value on the value chain. */ |
fa4727a6 | 979 | for (v = val_chain; v; v = next) |
a5606eee VP |
980 | { |
981 | /* If it's a memory location, and GDB actually needed | |
982 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
983 | must watch it. If the first value returned is |
984 | still lazy, that means an error occurred reading it; | |
985 | watch it anyway in case it becomes readable. */ | |
a5606eee | 986 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 987 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
988 | { |
989 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 990 | |
a5606eee VP |
991 | /* We only watch structs and arrays if user asked |
992 | for it explicitly, never if they just happen to | |
993 | appear in the middle of some value chain. */ | |
fa4727a6 | 994 | if (v == result |
a5606eee VP |
995 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
996 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
997 | { | |
998 | CORE_ADDR addr; | |
999 | int len, type; | |
1000 | struct bp_location *loc, **tmp; | |
1001 | ||
42ae5230 | 1002 | addr = value_address (v); |
a5606eee VP |
1003 | len = TYPE_LENGTH (value_type (v)); |
1004 | type = hw_write; | |
1005 | if (b->type == bp_read_watchpoint) | |
1006 | type = hw_read; | |
1007 | else if (b->type == bp_access_watchpoint) | |
1008 | type = hw_access; | |
1009 | ||
39d61571 | 1010 | loc = allocate_bp_location (b); |
a5606eee VP |
1011 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
1012 | ; | |
1013 | *tmp = loc; | |
a6d9a66e | 1014 | loc->gdbarch = get_type_arch (value_type (v)); |
a5606eee VP |
1015 | loc->address = addr; |
1016 | loc->length = len; | |
1017 | loc->watchpoint_type = type; | |
1018 | } | |
1019 | } | |
1020 | ||
1021 | next = value_next (v); | |
1022 | if (v != b->val) | |
1023 | value_free (v); | |
1024 | } | |
1025 | ||
2ec93238 MK |
1026 | /* We just regenerated the list of breakpoint locations. |
1027 | The new location does not have its condition field set to anything | |
1028 | and therefore, we must always reparse the cond_string, independently | |
1029 | of the value of the reparse flag. */ | |
1030 | if (b->cond_string != NULL) | |
a5606eee VP |
1031 | { |
1032 | char *s = b->cond_string; | |
a5606eee VP |
1033 | b->loc->cond = parse_exp_1 (&s, b->exp_valid_block, 0); |
1034 | } | |
1035 | } | |
1036 | else if (!within_current_scope) | |
7270d8f2 | 1037 | { |
a5606eee | 1038 | printf_filtered (_("\ |
567e1b4e | 1039 | Watchpoint %d deleted because the program has left the block \n\ |
a5606eee VP |
1040 | in which its expression is valid.\n"), |
1041 | b->number); | |
1042 | if (b->related_breakpoint) | |
1043 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1044 | b->disposition = disp_del_at_next_stop; | |
7270d8f2 | 1045 | } |
a5606eee VP |
1046 | |
1047 | /* Restore the selected frame. */ | |
1048 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1049 | } |
1050 | ||
a5606eee | 1051 | |
74960c60 VP |
1052 | /* Returns 1 iff breakpoint location should be |
1053 | inserted in the inferior. */ | |
1054 | static int | |
1055 | should_be_inserted (struct bp_location *bpt) | |
1056 | { | |
1057 | if (!breakpoint_enabled (bpt->owner)) | |
1058 | return 0; | |
1059 | ||
1060 | if (bpt->owner->disposition == disp_del_at_next_stop) | |
1061 | return 0; | |
1062 | ||
1063 | if (!bpt->enabled || bpt->shlib_disabled || bpt->duplicate) | |
1064 | return 0; | |
1065 | ||
1042e4c0 SS |
1066 | /* Tracepoints are inserted by the target at a time of its choosing, |
1067 | not by us. */ | |
1068 | if (bpt->owner->type == bp_tracepoint) | |
1069 | return 0; | |
1070 | ||
74960c60 VP |
1071 | return 1; |
1072 | } | |
1073 | ||
879bfdc2 DJ |
1074 | /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint. |
1075 | Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS, | |
fa3a767f | 1076 | and HW_BREAKPOINT_ERROR are used to report problems. |
879bfdc2 DJ |
1077 | |
1078 | NOTE drow/2003-09-09: This routine could be broken down to an object-style | |
1079 | method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 1080 | static int |
879bfdc2 | 1081 | insert_bp_location (struct bp_location *bpt, |
26bb91f3 | 1082 | struct ui_file *tmp_error_stream, |
fa3a767f | 1083 | int *disabled_breaks, |
26bb91f3 | 1084 | int *hw_breakpoint_error) |
879bfdc2 DJ |
1085 | { |
1086 | int val = 0; | |
1087 | ||
74960c60 | 1088 | if (!should_be_inserted (bpt) || bpt->inserted) |
879bfdc2 DJ |
1089 | return 0; |
1090 | ||
8181d85f DJ |
1091 | /* Initialize the target-specific information. */ |
1092 | memset (&bpt->target_info, 0, sizeof (bpt->target_info)); | |
1093 | bpt->target_info.placed_address = bpt->address; | |
1094 | ||
879bfdc2 DJ |
1095 | if (bpt->loc_type == bp_loc_software_breakpoint |
1096 | || bpt->loc_type == bp_loc_hardware_breakpoint) | |
1097 | { | |
765dc015 VP |
1098 | if (bpt->owner->type != bp_hardware_breakpoint) |
1099 | { | |
1100 | /* If the explicitly specified breakpoint type | |
1101 | is not hardware breakpoint, check the memory map to see | |
1102 | if the breakpoint address is in read only memory or not. | |
1103 | Two important cases are: | |
1104 | - location type is not hardware breakpoint, memory | |
1105 | is readonly. We change the type of the location to | |
1106 | hardware breakpoint. | |
1107 | - location type is hardware breakpoint, memory is read-write. | |
1108 | This means we've previously made the location hardware one, but | |
1109 | then the memory map changed, so we undo. | |
1110 | ||
1111 | When breakpoints are removed, remove_breakpoints will | |
1112 | use location types we've just set here, the only possible | |
1113 | problem is that memory map has changed during running program, | |
1114 | but it's not going to work anyway with current gdb. */ | |
1115 | struct mem_region *mr | |
1116 | = lookup_mem_region (bpt->target_info.placed_address); | |
1117 | ||
1118 | if (mr) | |
1119 | { | |
1120 | if (automatic_hardware_breakpoints) | |
1121 | { | |
1122 | int changed = 0; | |
1123 | enum bp_loc_type new_type; | |
1124 | ||
1125 | if (mr->attrib.mode != MEM_RW) | |
1126 | new_type = bp_loc_hardware_breakpoint; | |
1127 | else | |
1128 | new_type = bp_loc_software_breakpoint; | |
1129 | ||
1130 | if (new_type != bpt->loc_type) | |
1131 | { | |
1132 | static int said = 0; | |
1133 | bpt->loc_type = new_type; | |
1134 | if (!said) | |
1135 | { | |
1136 | fprintf_filtered (gdb_stdout, _("\ | |
0767c96d | 1137 | Note: automatically using hardware breakpoints for read-only addresses.\n")); |
765dc015 VP |
1138 | said = 1; |
1139 | } | |
1140 | } | |
1141 | } | |
1142 | else if (bpt->loc_type == bp_loc_software_breakpoint | |
1143 | && mr->attrib.mode != MEM_RW) | |
1144 | warning (_("cannot set software breakpoint at readonly address %s"), | |
5af949e3 | 1145 | paddress (bpt->gdbarch, bpt->address)); |
765dc015 VP |
1146 | } |
1147 | } | |
1148 | ||
879bfdc2 DJ |
1149 | /* First check to see if we have to handle an overlay. */ |
1150 | if (overlay_debugging == ovly_off | |
1151 | || bpt->section == NULL | |
1152 | || !(section_is_overlay (bpt->section))) | |
1153 | { | |
1154 | /* No overlay handling: just set the breakpoint. */ | |
1155 | ||
1156 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
a6d9a66e UW |
1157 | val = target_insert_hw_breakpoint (bpt->gdbarch, |
1158 | &bpt->target_info); | |
879bfdc2 | 1159 | else |
a6d9a66e UW |
1160 | val = target_insert_breakpoint (bpt->gdbarch, |
1161 | &bpt->target_info); | |
879bfdc2 DJ |
1162 | } |
1163 | else | |
1164 | { | |
1165 | /* This breakpoint is in an overlay section. | |
1166 | Shall we set a breakpoint at the LMA? */ | |
1167 | if (!overlay_events_enabled) | |
1168 | { | |
1169 | /* Yes -- overlay event support is not active, | |
1170 | so we must try to set a breakpoint at the LMA. | |
1171 | This will not work for a hardware breakpoint. */ | |
1172 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8a3fe4f8 | 1173 | warning (_("hardware breakpoint %d not supported in overlay!"), |
879bfdc2 DJ |
1174 | bpt->owner->number); |
1175 | else | |
1176 | { | |
1177 | CORE_ADDR addr = overlay_unmapped_address (bpt->address, | |
1178 | bpt->section); | |
1179 | /* Set a software (trap) breakpoint at the LMA. */ | |
8181d85f DJ |
1180 | bpt->overlay_target_info = bpt->target_info; |
1181 | bpt->overlay_target_info.placed_address = addr; | |
a6d9a66e UW |
1182 | val = target_insert_breakpoint (bpt->gdbarch, |
1183 | &bpt->overlay_target_info); | |
879bfdc2 | 1184 | if (val != 0) |
99361f52 DE |
1185 | fprintf_unfiltered (tmp_error_stream, |
1186 | "Overlay breakpoint %d failed: in ROM?\n", | |
879bfdc2 DJ |
1187 | bpt->owner->number); |
1188 | } | |
1189 | } | |
1190 | /* Shall we set a breakpoint at the VMA? */ | |
1191 | if (section_is_mapped (bpt->section)) | |
1192 | { | |
1193 | /* Yes. This overlay section is mapped into memory. */ | |
1194 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
a6d9a66e UW |
1195 | val = target_insert_hw_breakpoint (bpt->gdbarch, |
1196 | &bpt->target_info); | |
879bfdc2 | 1197 | else |
a6d9a66e UW |
1198 | val = target_insert_breakpoint (bpt->gdbarch, |
1199 | &bpt->target_info); | |
879bfdc2 DJ |
1200 | } |
1201 | else | |
1202 | { | |
1203 | /* No. This breakpoint will not be inserted. | |
1204 | No error, but do not mark the bp as 'inserted'. */ | |
1205 | return 0; | |
1206 | } | |
1207 | } | |
1208 | ||
1209 | if (val) | |
1210 | { | |
1211 | /* Can't set the breakpoint. */ | |
f5c9a895 | 1212 | if (solib_name_from_address (bpt->address)) |
879bfdc2 DJ |
1213 | { |
1214 | /* See also: disable_breakpoints_in_shlibs. */ | |
1215 | val = 0; | |
0d381245 | 1216 | bpt->shlib_disabled = 1; |
879bfdc2 DJ |
1217 | if (!*disabled_breaks) |
1218 | { | |
1219 | fprintf_unfiltered (tmp_error_stream, | |
1220 | "Cannot insert breakpoint %d.\n", | |
1221 | bpt->owner->number); | |
1222 | fprintf_unfiltered (tmp_error_stream, | |
1223 | "Temporarily disabling shared library breakpoints:\n"); | |
1224 | } | |
1225 | *disabled_breaks = 1; | |
1226 | fprintf_unfiltered (tmp_error_stream, | |
1227 | "breakpoint #%d\n", bpt->owner->number); | |
1228 | } | |
1229 | else | |
879bfdc2 | 1230 | { |
879bfdc2 DJ |
1231 | if (bpt->loc_type == bp_loc_hardware_breakpoint) |
1232 | { | |
1233 | *hw_breakpoint_error = 1; | |
1234 | fprintf_unfiltered (tmp_error_stream, | |
1235 | "Cannot insert hardware breakpoint %d.\n", | |
1236 | bpt->owner->number); | |
1237 | } | |
1238 | else | |
1239 | { | |
1240 | fprintf_unfiltered (tmp_error_stream, | |
1241 | "Cannot insert breakpoint %d.\n", | |
1242 | bpt->owner->number); | |
1243 | fprintf_filtered (tmp_error_stream, | |
1244 | "Error accessing memory address "); | |
5af949e3 UW |
1245 | fputs_filtered (paddress (bpt->gdbarch, bpt->address), |
1246 | tmp_error_stream); | |
879bfdc2 DJ |
1247 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1248 | safe_strerror (val)); | |
1249 | } | |
1250 | ||
1251 | } | |
1252 | } | |
1253 | else | |
1254 | bpt->inserted = 1; | |
1255 | ||
1256 | return val; | |
1257 | } | |
1258 | ||
1259 | else if (bpt->loc_type == bp_loc_hardware_watchpoint | |
1260 | /* NOTE drow/2003-09-08: This state only exists for removing | |
1261 | watchpoints. It's not clear that it's necessary... */ | |
1262 | && bpt->owner->disposition != disp_del_at_next_stop) | |
1263 | { | |
a5606eee VP |
1264 | val = target_insert_watchpoint (bpt->address, |
1265 | bpt->length, | |
1266 | bpt->watchpoint_type); | |
1267 | bpt->inserted = (val != -1); | |
879bfdc2 DJ |
1268 | } |
1269 | ||
fe798b75 | 1270 | else if (bpt->owner->type == bp_catchpoint) |
879bfdc2 | 1271 | { |
71fff37b AC |
1272 | struct gdb_exception e = catch_exception (uiout, insert_catchpoint, |
1273 | bpt->owner, RETURN_MASK_ERROR); | |
9cbc821d AC |
1274 | exception_fprintf (gdb_stderr, e, "warning: inserting catchpoint %d: ", |
1275 | bpt->owner->number); | |
1276 | if (e.reason < 0) | |
879bfdc2 DJ |
1277 | bpt->owner->enable_state = bp_disabled; |
1278 | else | |
1279 | bpt->inserted = 1; | |
1640b821 DJ |
1280 | |
1281 | /* We've already printed an error message if there was a problem | |
1282 | inserting this catchpoint, and we've disabled the catchpoint, | |
1283 | so just return success. */ | |
1284 | return 0; | |
879bfdc2 DJ |
1285 | } |
1286 | ||
1287 | return 0; | |
1288 | } | |
1289 | ||
74960c60 VP |
1290 | /* Make sure all breakpoints are inserted in inferior. |
1291 | Throws exception on any error. | |
1292 | A breakpoint that is already inserted won't be inserted | |
1293 | again, so calling this function twice is safe. */ | |
1294 | void | |
1295 | insert_breakpoints (void) | |
1296 | { | |
1297 | struct breakpoint *bpt; | |
1298 | ||
1299 | ALL_BREAKPOINTS (bpt) | |
1300 | if (is_hardware_watchpoint (bpt)) | |
1301 | update_watchpoint (bpt, 0 /* don't reparse. */); | |
1302 | ||
b60e7edf | 1303 | update_global_location_list (1); |
74960c60 | 1304 | |
c35b1492 PA |
1305 | /* update_global_location_list does not insert breakpoints when |
1306 | always_inserted_mode is not enabled. Explicitly insert them | |
1307 | now. */ | |
1308 | if (!breakpoints_always_inserted_mode ()) | |
74960c60 VP |
1309 | insert_breakpoint_locations (); |
1310 | } | |
1311 | ||
c906108c SS |
1312 | /* insert_breakpoints is used when starting or continuing the program. |
1313 | remove_breakpoints is used when the program stops. | |
1314 | Both return zero if successful, | |
1315 | or an `errno' value if could not write the inferior. */ | |
1316 | ||
74960c60 VP |
1317 | static void |
1318 | insert_breakpoint_locations (void) | |
c906108c | 1319 | { |
a5606eee | 1320 | struct breakpoint *bpt; |
879bfdc2 | 1321 | struct bp_location *b, *temp; |
e236ba44 | 1322 | int error = 0; |
c906108c SS |
1323 | int val = 0; |
1324 | int disabled_breaks = 0; | |
81d0cc19 | 1325 | int hw_breakpoint_error = 0; |
c906108c | 1326 | |
81d0cc19 | 1327 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 1328 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 1329 | |
81d0cc19 GS |
1330 | /* Explicitly mark the warning -- this will only be printed if |
1331 | there was an error. */ | |
1332 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
a5606eee | 1333 | |
879bfdc2 DJ |
1334 | ALL_BP_LOCATIONS_SAFE (b, temp) |
1335 | { | |
74960c60 | 1336 | if (!should_be_inserted (b) || b->inserted) |
879bfdc2 DJ |
1337 | continue; |
1338 | ||
f365de73 AS |
1339 | /* There is no point inserting thread-specific breakpoints if the |
1340 | thread no longer exists. */ | |
1341 | if (b->owner->thread != -1 | |
1342 | && !valid_thread_id (b->owner->thread)) | |
1343 | continue; | |
1344 | ||
879bfdc2 | 1345 | val = insert_bp_location (b, tmp_error_stream, |
fa3a767f | 1346 | &disabled_breaks, |
879bfdc2 DJ |
1347 | &hw_breakpoint_error); |
1348 | if (val) | |
e236ba44 | 1349 | error = val; |
879bfdc2 | 1350 | } |
c906108c | 1351 | |
a5606eee VP |
1352 | /* If we failed to insert all locations of a watchpoint, |
1353 | remove them, as half-inserted watchpoint is of limited use. */ | |
1354 | ALL_BREAKPOINTS (bpt) | |
1355 | { | |
1356 | int some_failed = 0; | |
1357 | struct bp_location *loc; | |
1358 | ||
1359 | if (!is_hardware_watchpoint (bpt)) | |
1360 | continue; | |
1361 | ||
d6b74ac4 | 1362 | if (!breakpoint_enabled (bpt)) |
a5606eee | 1363 | continue; |
74960c60 VP |
1364 | |
1365 | if (bpt->disposition == disp_del_at_next_stop) | |
1366 | continue; | |
a5606eee VP |
1367 | |
1368 | for (loc = bpt->loc; loc; loc = loc->next) | |
1369 | if (!loc->inserted) | |
1370 | { | |
1371 | some_failed = 1; | |
1372 | break; | |
1373 | } | |
1374 | if (some_failed) | |
1375 | { | |
1376 | for (loc = bpt->loc; loc; loc = loc->next) | |
1377 | if (loc->inserted) | |
1378 | remove_breakpoint (loc, mark_uninserted); | |
1379 | ||
1380 | hw_breakpoint_error = 1; | |
1381 | fprintf_unfiltered (tmp_error_stream, | |
1382 | "Could not insert hardware watchpoint %d.\n", | |
1383 | bpt->number); | |
1384 | error = -1; | |
1385 | } | |
1386 | } | |
1387 | ||
e236ba44 | 1388 | if (error) |
81d0cc19 GS |
1389 | { |
1390 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1391 | message about possibly exhausted resources. */ | |
879bfdc2 | 1392 | if (hw_breakpoint_error) |
81d0cc19 | 1393 | { |
c6510018 MS |
1394 | fprintf_unfiltered (tmp_error_stream, |
1395 | "Could not insert hardware breakpoints:\n\ | |
1396 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1397 | } |
81d0cc19 GS |
1398 | target_terminal_ours_for_output (); |
1399 | error_stream (tmp_error_stream); | |
1400 | } | |
f7545552 TT |
1401 | |
1402 | do_cleanups (cleanups); | |
c906108c SS |
1403 | } |
1404 | ||
c906108c | 1405 | int |
fba45db2 | 1406 | remove_breakpoints (void) |
c906108c | 1407 | { |
0bde7532 | 1408 | struct bp_location *b; |
c906108c SS |
1409 | int val; |
1410 | ||
0bde7532 | 1411 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1412 | { |
0bde7532 | 1413 | if (b->inserted) |
c5aa993b JM |
1414 | { |
1415 | val = remove_breakpoint (b, mark_uninserted); | |
1416 | if (val != 0) | |
1417 | return val; | |
1418 | } | |
1419 | } | |
c906108c SS |
1420 | return 0; |
1421 | } | |
1422 | ||
692590c1 | 1423 | int |
80ce1ecb | 1424 | remove_hw_watchpoints (void) |
692590c1 | 1425 | { |
0bde7532 | 1426 | struct bp_location *b; |
692590c1 MS |
1427 | int val; |
1428 | ||
0bde7532 | 1429 | ALL_BP_LOCATIONS (b) |
692590c1 | 1430 | { |
0bde7532 | 1431 | if (b->inserted && b->loc_type == bp_loc_hardware_watchpoint) |
692590c1 MS |
1432 | { |
1433 | val = remove_breakpoint (b, mark_uninserted); | |
1434 | if (val != 0) | |
1435 | return val; | |
1436 | } | |
1437 | } | |
1438 | return 0; | |
1439 | } | |
1440 | ||
c906108c | 1441 | int |
fba45db2 | 1442 | reattach_breakpoints (int pid) |
c906108c | 1443 | { |
0bde7532 | 1444 | struct bp_location *b; |
c906108c | 1445 | int val; |
ce696e05 | 1446 | struct cleanup *old_chain = save_inferior_ptid (); |
a4954f26 | 1447 | struct ui_file *tmp_error_stream = mem_fileopen (); |
fa3a767f | 1448 | int dummy1 = 0, dummy2 = 0; |
a4954f26 DJ |
1449 | |
1450 | make_cleanup_ui_file_delete (tmp_error_stream); | |
c906108c | 1451 | |
ce696e05 | 1452 | inferior_ptid = pid_to_ptid (pid); |
0bde7532 | 1453 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1454 | { |
0bde7532 | 1455 | if (b->inserted) |
c5aa993b | 1456 | { |
a4954f26 DJ |
1457 | b->inserted = 0; |
1458 | val = insert_bp_location (b, tmp_error_stream, | |
fa3a767f | 1459 | &dummy1, &dummy2); |
c5aa993b JM |
1460 | if (val != 0) |
1461 | { | |
ce696e05 | 1462 | do_cleanups (old_chain); |
c5aa993b JM |
1463 | return val; |
1464 | } | |
1465 | } | |
1466 | } | |
ce696e05 | 1467 | do_cleanups (old_chain); |
c906108c SS |
1468 | return 0; |
1469 | } | |
1470 | ||
e58b0e63 PA |
1471 | static int internal_breakpoint_number = -1; |
1472 | ||
e62c965a | 1473 | static struct breakpoint * |
a6d9a66e UW |
1474 | create_internal_breakpoint (struct gdbarch *gdbarch, |
1475 | CORE_ADDR address, enum bptype type) | |
e62c965a | 1476 | { |
e62c965a PP |
1477 | struct symtab_and_line sal; |
1478 | struct breakpoint *b; | |
1479 | ||
1480 | init_sal (&sal); /* initialize to zeroes */ | |
1481 | ||
1482 | sal.pc = address; | |
1483 | sal.section = find_pc_overlay (sal.pc); | |
1484 | ||
a6d9a66e | 1485 | b = set_raw_breakpoint (gdbarch, sal, type); |
e62c965a PP |
1486 | b->number = internal_breakpoint_number--; |
1487 | b->disposition = disp_donttouch; | |
1488 | ||
1489 | return b; | |
1490 | } | |
1491 | ||
1492 | static void | |
69de3c6a | 1493 | create_overlay_event_breakpoint (char *func_name) |
e62c965a | 1494 | { |
69de3c6a | 1495 | struct objfile *objfile; |
e62c965a | 1496 | |
69de3c6a PP |
1497 | ALL_OBJFILES (objfile) |
1498 | { | |
1499 | struct breakpoint *b; | |
1500 | struct minimal_symbol *m; | |
1501 | ||
1502 | m = lookup_minimal_symbol_text (func_name, objfile); | |
1503 | if (m == NULL) | |
1504 | continue; | |
e62c965a | 1505 | |
a6d9a66e UW |
1506 | b = create_internal_breakpoint (get_objfile_arch (objfile), |
1507 | SYMBOL_VALUE_ADDRESS (m), | |
69de3c6a PP |
1508 | bp_overlay_event); |
1509 | b->addr_string = xstrdup (func_name); | |
e62c965a | 1510 | |
69de3c6a PP |
1511 | if (overlay_debugging == ovly_auto) |
1512 | { | |
1513 | b->enable_state = bp_enabled; | |
1514 | overlay_events_enabled = 1; | |
1515 | } | |
1516 | else | |
1517 | { | |
1518 | b->enable_state = bp_disabled; | |
1519 | overlay_events_enabled = 0; | |
1520 | } | |
e62c965a PP |
1521 | } |
1522 | update_global_location_list (1); | |
1523 | } | |
1524 | ||
0fd8e87f UW |
1525 | static void |
1526 | create_longjmp_master_breakpoint (char *func_name) | |
1527 | { | |
1528 | struct objfile *objfile; | |
1529 | ||
1530 | ALL_OBJFILES (objfile) | |
1531 | { | |
1532 | struct breakpoint *b; | |
1533 | struct minimal_symbol *m; | |
1534 | ||
1535 | if (!gdbarch_get_longjmp_target_p (get_objfile_arch (objfile))) | |
1536 | continue; | |
1537 | ||
1538 | m = lookup_minimal_symbol_text (func_name, objfile); | |
1539 | if (m == NULL) | |
1540 | continue; | |
1541 | ||
a6d9a66e UW |
1542 | b = create_internal_breakpoint (get_objfile_arch (objfile), |
1543 | SYMBOL_VALUE_ADDRESS (m), | |
0fd8e87f UW |
1544 | bp_longjmp_master); |
1545 | b->addr_string = xstrdup (func_name); | |
1546 | b->enable_state = bp_disabled; | |
1547 | } | |
1548 | update_global_location_list (1); | |
1549 | } | |
1550 | ||
c906108c | 1551 | void |
fba45db2 | 1552 | update_breakpoints_after_exec (void) |
c906108c | 1553 | { |
c5aa993b JM |
1554 | struct breakpoint *b; |
1555 | struct breakpoint *temp; | |
25b22b0a | 1556 | struct bp_location *bploc; |
c906108c | 1557 | |
25b22b0a PA |
1558 | /* We're about to delete breakpoints from GDB's lists. If the |
1559 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
1560 | writing the breakpoints' "shadow contents" back into memory. The | |
1561 | "shadow contents" are NOT valid after an exec, so GDB should not | |
1562 | do that. Instead, the target is responsible from marking | |
1563 | breakpoints out as soon as it detects an exec. We don't do that | |
1564 | here instead, because there may be other attempts to delete | |
1565 | breakpoints after detecting an exec and before reaching here. */ | |
1566 | ALL_BP_LOCATIONS (bploc) | |
1567 | gdb_assert (!bploc->inserted); | |
c906108c SS |
1568 | |
1569 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1570 | { |
1571 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
1572 | if (b->type == bp_shlib_event) | |
1573 | { | |
1574 | delete_breakpoint (b); | |
1575 | continue; | |
1576 | } | |
c906108c | 1577 | |
1900040c | 1578 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
1579 | as must overlay event and longjmp master breakpoints. */ |
1580 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
1581 | || b->type == bp_longjmp_master) | |
c4093a6a JM |
1582 | { |
1583 | delete_breakpoint (b); | |
1584 | continue; | |
1585 | } | |
1586 | ||
c5aa993b JM |
1587 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1588 | if (b->type == bp_step_resume) | |
1589 | { | |
1590 | delete_breakpoint (b); | |
1591 | continue; | |
1592 | } | |
1593 | ||
611c83ae PA |
1594 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
1595 | after an exec. */ | |
1596 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume) | |
1597 | { | |
1598 | delete_breakpoint (b); | |
1599 | continue; | |
1600 | } | |
1601 | ||
ce78b96d JB |
1602 | if (b->type == bp_catchpoint) |
1603 | { | |
1604 | /* For now, none of the bp_catchpoint breakpoints need to | |
1605 | do anything at this point. In the future, if some of | |
1606 | the catchpoints need to something, we will need to add | |
1607 | a new method, and call this method from here. */ | |
1608 | continue; | |
1609 | } | |
1610 | ||
c5aa993b JM |
1611 | /* bp_finish is a special case. The only way we ought to be able |
1612 | to see one of these when an exec() has happened, is if the user | |
1613 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1614 | carries them to the call-site of the current callee, by setting | |
1615 | a temporary bp there and resuming. But in this case, the finish | |
1616 | will carry them entirely through the vfork & exec. | |
1617 | ||
1618 | We don't want to allow a bp_finish to remain inserted now. But | |
1619 | we can't safely delete it, 'cause finish_command has a handle to | |
1620 | the bp on a bpstat, and will later want to delete it. There's a | |
1621 | chance (and I've seen it happen) that if we delete the bp_finish | |
1622 | here, that its storage will get reused by the time finish_command | |
1623 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1624 | We really must allow finish_command to delete a bp_finish. | |
1625 | ||
53a5351d JM |
1626 | In the absense of a general solution for the "how do we know |
1627 | it's safe to delete something others may have handles to?" | |
1628 | problem, what we'll do here is just uninsert the bp_finish, and | |
1629 | let finish_command delete it. | |
1630 | ||
1631 | (We know the bp_finish is "doomed" in the sense that it's | |
1632 | momentary, and will be deleted as soon as finish_command sees | |
1633 | the inferior stopped. So it doesn't matter that the bp's | |
1634 | address is probably bogus in the new a.out, unlike e.g., the | |
1635 | solib breakpoints.) */ | |
c5aa993b | 1636 | |
c5aa993b JM |
1637 | if (b->type == bp_finish) |
1638 | { | |
1639 | continue; | |
1640 | } | |
1641 | ||
1642 | /* Without a symbolic address, we have little hope of the | |
1643 | pre-exec() address meaning the same thing in the post-exec() | |
1644 | a.out. */ | |
1645 | if (b->addr_string == NULL) | |
1646 | { | |
1647 | delete_breakpoint (b); | |
1648 | continue; | |
1649 | } | |
c5aa993b | 1650 | } |
1900040c | 1651 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
69de3c6a | 1652 | create_overlay_event_breakpoint ("_ovly_debug_event"); |
0fd8e87f UW |
1653 | create_longjmp_master_breakpoint ("longjmp"); |
1654 | create_longjmp_master_breakpoint ("_longjmp"); | |
1655 | create_longjmp_master_breakpoint ("siglongjmp"); | |
1656 | create_longjmp_master_breakpoint ("_siglongjmp"); | |
c906108c SS |
1657 | } |
1658 | ||
1659 | int | |
fba45db2 | 1660 | detach_breakpoints (int pid) |
c906108c | 1661 | { |
0bde7532 | 1662 | struct bp_location *b; |
c906108c | 1663 | int val; |
ce696e05 | 1664 | struct cleanup *old_chain = save_inferior_ptid (); |
c5aa993b | 1665 | |
39f77062 | 1666 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 1667 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 1668 | |
ce696e05 KB |
1669 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1670 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1671 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1672 | { |
0bde7532 | 1673 | if (b->inserted) |
c5aa993b JM |
1674 | { |
1675 | val = remove_breakpoint (b, mark_inserted); | |
1676 | if (val != 0) | |
1677 | { | |
ce696e05 | 1678 | do_cleanups (old_chain); |
c5aa993b JM |
1679 | return val; |
1680 | } | |
1681 | } | |
1682 | } | |
ce696e05 | 1683 | do_cleanups (old_chain); |
c906108c SS |
1684 | return 0; |
1685 | } | |
1686 | ||
1687 | static int | |
0bde7532 | 1688 | remove_breakpoint (struct bp_location *b, insertion_state_t is) |
c906108c SS |
1689 | { |
1690 | int val; | |
c5aa993b | 1691 | |
0bde7532 | 1692 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
1693 | /* Permanent breakpoints cannot be inserted or removed. */ |
1694 | return 0; | |
1695 | ||
74960c60 VP |
1696 | /* The type of none suggests that owner is actually deleted. |
1697 | This should not ever happen. */ | |
1698 | gdb_assert (b->owner->type != bp_none); | |
0bde7532 DJ |
1699 | |
1700 | if (b->loc_type == bp_loc_software_breakpoint | |
1701 | || b->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 1702 | { |
c02f5703 MS |
1703 | /* "Normal" instruction breakpoint: either the standard |
1704 | trap-instruction bp (bp_breakpoint), or a | |
1705 | bp_hardware_breakpoint. */ | |
1706 | ||
1707 | /* First check to see if we have to handle an overlay. */ | |
1708 | if (overlay_debugging == ovly_off | |
0bde7532 DJ |
1709 | || b->section == NULL |
1710 | || !(section_is_overlay (b->section))) | |
c02f5703 MS |
1711 | { |
1712 | /* No overlay handling: just remove the breakpoint. */ | |
1713 | ||
0bde7532 | 1714 | if (b->loc_type == bp_loc_hardware_breakpoint) |
a6d9a66e | 1715 | val = target_remove_hw_breakpoint (b->gdbarch, &b->target_info); |
c02f5703 | 1716 | else |
a6d9a66e | 1717 | val = target_remove_breakpoint (b->gdbarch, &b->target_info); |
c02f5703 | 1718 | } |
c906108c SS |
1719 | else |
1720 | { | |
c02f5703 MS |
1721 | /* This breakpoint is in an overlay section. |
1722 | Did we set a breakpoint at the LMA? */ | |
1723 | if (!overlay_events_enabled) | |
1724 | { | |
1725 | /* Yes -- overlay event support is not active, so we | |
1726 | should have set a breakpoint at the LMA. Remove it. | |
1727 | */ | |
c02f5703 MS |
1728 | /* Ignore any failures: if the LMA is in ROM, we will |
1729 | have already warned when we failed to insert it. */ | |
0bde7532 | 1730 | if (b->loc_type == bp_loc_hardware_breakpoint) |
a6d9a66e UW |
1731 | target_remove_hw_breakpoint (b->gdbarch, |
1732 | &b->overlay_target_info); | |
c02f5703 | 1733 | else |
a6d9a66e UW |
1734 | target_remove_breakpoint (b->gdbarch, |
1735 | &b->overlay_target_info); | |
c02f5703 MS |
1736 | } |
1737 | /* Did we set a breakpoint at the VMA? | |
1738 | If so, we will have marked the breakpoint 'inserted'. */ | |
0bde7532 | 1739 | if (b->inserted) |
c906108c | 1740 | { |
c02f5703 MS |
1741 | /* Yes -- remove it. Previously we did not bother to |
1742 | remove the breakpoint if the section had been | |
1743 | unmapped, but let's not rely on that being safe. We | |
1744 | don't know what the overlay manager might do. */ | |
0bde7532 | 1745 | if (b->loc_type == bp_loc_hardware_breakpoint) |
a6d9a66e UW |
1746 | val = target_remove_hw_breakpoint (b->gdbarch, |
1747 | &b->target_info); | |
aa67235e UW |
1748 | |
1749 | /* However, we should remove *software* breakpoints only | |
1750 | if the section is still mapped, or else we overwrite | |
1751 | wrong code with the saved shadow contents. */ | |
1752 | else if (section_is_mapped (b->section)) | |
a6d9a66e UW |
1753 | val = target_remove_breakpoint (b->gdbarch, |
1754 | &b->target_info); | |
aa67235e UW |
1755 | else |
1756 | val = 0; | |
c906108c | 1757 | } |
c02f5703 MS |
1758 | else |
1759 | { | |
1760 | /* No -- not inserted, so no need to remove. No error. */ | |
1761 | val = 0; | |
1762 | } | |
c906108c | 1763 | } |
879d1e6b UW |
1764 | |
1765 | /* In some cases, we might not be able to remove a breakpoint | |
1766 | in a shared library that has already been removed, but we | |
1767 | have not yet processed the shlib unload event. */ | |
f5c9a895 | 1768 | if (val && solib_name_from_address (b->address)) |
879d1e6b UW |
1769 | val = 0; |
1770 | ||
c906108c SS |
1771 | if (val) |
1772 | return val; | |
0bde7532 | 1773 | b->inserted = (is == mark_inserted); |
c906108c | 1774 | } |
a5606eee | 1775 | else if (b->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 1776 | { |
278cd55f AC |
1777 | struct value *v; |
1778 | struct value *n; | |
c5aa993b | 1779 | |
0bde7532 | 1780 | b->inserted = (is == mark_inserted); |
a5606eee VP |
1781 | val = target_remove_watchpoint (b->address, b->length, |
1782 | b->watchpoint_type); | |
2e70b7b9 | 1783 | |
c906108c | 1784 | /* Failure to remove any of the hardware watchpoints comes here. */ |
0bde7532 | 1785 | if ((is == mark_uninserted) && (b->inserted)) |
8a3fe4f8 | 1786 | warning (_("Could not remove hardware watchpoint %d."), |
0bde7532 | 1787 | b->owner->number); |
c906108c | 1788 | } |
ce78b96d JB |
1789 | else if (b->owner->type == bp_catchpoint |
1790 | && breakpoint_enabled (b->owner) | |
1791 | && !b->duplicate) | |
1792 | { | |
1793 | gdb_assert (b->owner->ops != NULL && b->owner->ops->remove != NULL); | |
1794 | ||
1795 | val = b->owner->ops->remove (b->owner); | |
1796 | if (val) | |
1797 | return val; | |
1798 | b->inserted = (is == mark_inserted); | |
1799 | } | |
c906108c SS |
1800 | |
1801 | return 0; | |
1802 | } | |
1803 | ||
1804 | /* Clear the "inserted" flag in all breakpoints. */ | |
1805 | ||
25b22b0a | 1806 | void |
fba45db2 | 1807 | mark_breakpoints_out (void) |
c906108c | 1808 | { |
075f6582 | 1809 | struct bp_location *bpt; |
c906108c | 1810 | |
075f6582 DJ |
1811 | ALL_BP_LOCATIONS (bpt) |
1812 | bpt->inserted = 0; | |
c906108c SS |
1813 | } |
1814 | ||
53a5351d JM |
1815 | /* Clear the "inserted" flag in all breakpoints and delete any |
1816 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1817 | |
1818 | Plus other such housekeeping that has to be done for breakpoints | |
1819 | between runs. | |
1820 | ||
53a5351d JM |
1821 | Note: this function gets called at the end of a run (by |
1822 | generic_mourn_inferior) and when a run begins (by | |
1823 | init_wait_for_inferior). */ | |
c906108c SS |
1824 | |
1825 | ||
1826 | ||
1827 | void | |
fba45db2 | 1828 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 1829 | { |
52f0bd74 | 1830 | struct breakpoint *b, *temp; |
075f6582 | 1831 | struct bp_location *bpt; |
1c5cfe86 | 1832 | int ix; |
c906108c | 1833 | |
50c71eaf PA |
1834 | /* If breakpoint locations are shared across processes, then there's |
1835 | nothing to do. */ | |
2567c7d9 | 1836 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
1837 | return; |
1838 | ||
075f6582 | 1839 | ALL_BP_LOCATIONS (bpt) |
514f746b AR |
1840 | if (bpt->owner->enable_state != bp_permanent) |
1841 | bpt->inserted = 0; | |
075f6582 | 1842 | |
c906108c | 1843 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 1844 | { |
c5aa993b JM |
1845 | switch (b->type) |
1846 | { | |
1847 | case bp_call_dummy: | |
1848 | case bp_watchpoint_scope: | |
c906108c | 1849 | |
c5aa993b JM |
1850 | /* If the call dummy breakpoint is at the entry point it will |
1851 | cause problems when the inferior is rerun, so we better | |
1852 | get rid of it. | |
c906108c | 1853 | |
c5aa993b JM |
1854 | Also get rid of scope breakpoints. */ |
1855 | delete_breakpoint (b); | |
1856 | break; | |
c906108c | 1857 | |
c5aa993b JM |
1858 | case bp_watchpoint: |
1859 | case bp_hardware_watchpoint: | |
1860 | case bp_read_watchpoint: | |
1861 | case bp_access_watchpoint: | |
c906108c | 1862 | |
c5aa993b JM |
1863 | /* Likewise for watchpoints on local expressions. */ |
1864 | if (b->exp_valid_block != NULL) | |
1865 | delete_breakpoint (b); | |
967af18d | 1866 | else if (context == inf_starting) |
c860120c PM |
1867 | { |
1868 | /* Reset val field to force reread of starting value | |
1869 | in insert_breakpoints. */ | |
1870 | if (b->val) | |
1871 | value_free (b->val); | |
1872 | b->val = NULL; | |
fa4727a6 | 1873 | b->val_valid = 0; |
c860120c | 1874 | } |
c5aa993b JM |
1875 | break; |
1876 | default: | |
c5aa993b JM |
1877 | break; |
1878 | } | |
1879 | } | |
1c5cfe86 PA |
1880 | |
1881 | /* Get rid of the moribund locations. */ | |
1882 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bpt); ++ix) | |
1883 | free_bp_location (bpt); | |
1884 | VEC_free (bp_location_p, moribund_locations); | |
c906108c SS |
1885 | } |
1886 | ||
c2c6d25f JM |
1887 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1888 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1889 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1890 | permanent breakpoint. | |
1891 | - When continuing from a location with an ordinary breakpoint, we | |
1892 | actually single step once before calling insert_breakpoints. | |
1893 | - When continuing from a localion with a permanent breakpoint, we | |
1894 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1895 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1896 | |
c2c6d25f | 1897 | enum breakpoint_here |
fba45db2 | 1898 | breakpoint_here_p (CORE_ADDR pc) |
c906108c | 1899 | { |
89f9893c | 1900 | const struct bp_location *bpt; |
c2c6d25f | 1901 | int any_breakpoint_here = 0; |
c906108c | 1902 | |
075f6582 DJ |
1903 | ALL_BP_LOCATIONS (bpt) |
1904 | { | |
1905 | if (bpt->loc_type != bp_loc_software_breakpoint | |
1906 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1907 | continue; | |
1908 | ||
468d015d | 1909 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1910 | || bpt->owner->enable_state == bp_permanent) |
1911 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1912 | { | |
1913 | if (overlay_debugging | |
1914 | && section_is_overlay (bpt->section) | |
1915 | && !section_is_mapped (bpt->section)) | |
1916 | continue; /* unmapped overlay -- can't be a match */ | |
1917 | else if (bpt->owner->enable_state == bp_permanent) | |
1918 | return permanent_breakpoint_here; | |
1919 | else | |
1920 | any_breakpoint_here = 1; | |
1921 | } | |
1922 | } | |
c906108c | 1923 | |
c2c6d25f | 1924 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1925 | } |
1926 | ||
1c5cfe86 PA |
1927 | /* Return true if there's a moribund breakpoint at PC. */ |
1928 | ||
1929 | int | |
1930 | moribund_breakpoint_here_p (CORE_ADDR pc) | |
1931 | { | |
1932 | struct bp_location *loc; | |
1933 | int ix; | |
1934 | ||
1935 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
1936 | if (loc->address == pc) | |
1937 | return 1; | |
1938 | ||
1939 | return 0; | |
1940 | } | |
c2c6d25f | 1941 | |
c36b740a VP |
1942 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
1943 | inserted using regular breakpoint_chain/bp_location_chain mechanism. | |
1944 | This does not check for single-step breakpoints, which are | |
1945 | inserted and removed using direct target manipulation. */ | |
c906108c SS |
1946 | |
1947 | int | |
c36b740a | 1948 | regular_breakpoint_inserted_here_p (CORE_ADDR pc) |
c906108c | 1949 | { |
89f9893c | 1950 | const struct bp_location *bpt; |
c906108c | 1951 | |
075f6582 | 1952 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1953 | { |
075f6582 DJ |
1954 | if (bpt->loc_type != bp_loc_software_breakpoint |
1955 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1956 | continue; | |
1957 | ||
1958 | if (bpt->inserted | |
1959 | && bpt->address == pc) /* bp is inserted and matches pc */ | |
1960 | { | |
1961 | if (overlay_debugging | |
1962 | && section_is_overlay (bpt->section) | |
1963 | && !section_is_mapped (bpt->section)) | |
1964 | continue; /* unmapped overlay -- can't be a match */ | |
1965 | else | |
1966 | return 1; | |
1967 | } | |
c5aa993b | 1968 | } |
c36b740a VP |
1969 | return 0; |
1970 | } | |
1971 | ||
1972 | /* Returns non-zero iff there's either regular breakpoint | |
1973 | or a single step breakpoint inserted at PC. */ | |
1974 | ||
1975 | int | |
1976 | breakpoint_inserted_here_p (CORE_ADDR pc) | |
1977 | { | |
1978 | if (regular_breakpoint_inserted_here_p (pc)) | |
1979 | return 1; | |
c906108c | 1980 | |
1aafd4da UW |
1981 | if (single_step_breakpoint_inserted_here_p (pc)) |
1982 | return 1; | |
1983 | ||
c906108c SS |
1984 | return 0; |
1985 | } | |
1986 | ||
4fa8626c DJ |
1987 | /* This function returns non-zero iff there is a software breakpoint |
1988 | inserted at PC. */ | |
1989 | ||
1990 | int | |
1991 | software_breakpoint_inserted_here_p (CORE_ADDR pc) | |
1992 | { | |
89f9893c | 1993 | const struct bp_location *bpt; |
4fa8626c DJ |
1994 | int any_breakpoint_here = 0; |
1995 | ||
1996 | ALL_BP_LOCATIONS (bpt) | |
1997 | { | |
1998 | if (bpt->loc_type != bp_loc_software_breakpoint) | |
1999 | continue; | |
2000 | ||
0d381245 | 2001 | if (bpt->inserted |
4fa8626c DJ |
2002 | && bpt->address == pc) /* bp is enabled and matches pc */ |
2003 | { | |
2004 | if (overlay_debugging | |
2005 | && section_is_overlay (bpt->section) | |
2006 | && !section_is_mapped (bpt->section)) | |
2007 | continue; /* unmapped overlay -- can't be a match */ | |
2008 | else | |
2009 | return 1; | |
2010 | } | |
2011 | } | |
2012 | ||
1aafd4da UW |
2013 | /* Also check for software single-step breakpoints. */ |
2014 | if (single_step_breakpoint_inserted_here_p (pc)) | |
2015 | return 1; | |
2016 | ||
4fa8626c DJ |
2017 | return 0; |
2018 | } | |
2019 | ||
075f6582 DJ |
2020 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
2021 | PC is valid for process/thread PTID. */ | |
c906108c SS |
2022 | |
2023 | int | |
39f77062 | 2024 | breakpoint_thread_match (CORE_ADDR pc, ptid_t ptid) |
c906108c | 2025 | { |
89f9893c | 2026 | const struct bp_location *bpt; |
4a306c9a | 2027 | /* The thread and task IDs associated to PTID, computed lazily. */ |
a6f1cd96 | 2028 | int thread = -1; |
4a306c9a | 2029 | int task = 0; |
a6f1cd96 | 2030 | |
075f6582 | 2031 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 2032 | { |
075f6582 DJ |
2033 | if (bpt->loc_type != bp_loc_software_breakpoint |
2034 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
2035 | continue; | |
2036 | ||
a6f1cd96 JB |
2037 | if (!breakpoint_enabled (bpt->owner) |
2038 | && bpt->owner->enable_state != bp_permanent) | |
2039 | continue; | |
2040 | ||
2041 | if (bpt->address != pc) | |
2042 | continue; | |
2043 | ||
2044 | if (bpt->owner->thread != -1) | |
075f6582 | 2045 | { |
a6f1cd96 JB |
2046 | /* This is a thread-specific breakpoint. Check that ptid |
2047 | matches that thread. If thread hasn't been computed yet, | |
2048 | it is now time to do so. */ | |
2049 | if (thread == -1) | |
2050 | thread = pid_to_thread_id (ptid); | |
2051 | if (bpt->owner->thread != thread) | |
2052 | continue; | |
075f6582 | 2053 | } |
a6f1cd96 | 2054 | |
4a306c9a JB |
2055 | if (bpt->owner->task != 0) |
2056 | { | |
2057 | /* This is a task-specific breakpoint. Check that ptid | |
2058 | matches that task. If task hasn't been computed yet, | |
2059 | it is now time to do so. */ | |
2060 | if (task == 0) | |
2061 | task = ada_get_task_number (ptid); | |
2062 | if (bpt->owner->task != task) | |
2063 | continue; | |
2064 | } | |
2065 | ||
a6f1cd96 JB |
2066 | if (overlay_debugging |
2067 | && section_is_overlay (bpt->section) | |
2068 | && !section_is_mapped (bpt->section)) | |
2069 | continue; /* unmapped overlay -- can't be a match */ | |
2070 | ||
2071 | return 1; | |
c5aa993b | 2072 | } |
c906108c SS |
2073 | |
2074 | return 0; | |
2075 | } | |
c906108c | 2076 | \f |
c5aa993b | 2077 | |
c906108c SS |
2078 | /* bpstat stuff. External routines' interfaces are documented |
2079 | in breakpoint.h. */ | |
2080 | ||
2081 | int | |
fba45db2 | 2082 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c | 2083 | { |
533be4dd | 2084 | return (ep->type == bp_catchpoint); |
c906108c SS |
2085 | } |
2086 | ||
198757a8 VP |
2087 | void |
2088 | bpstat_free (bpstat bs) | |
2089 | { | |
2090 | if (bs->old_val != NULL) | |
2091 | value_free (bs->old_val); | |
2092 | free_command_lines (&bs->commands); | |
2093 | xfree (bs); | |
2094 | } | |
2095 | ||
c906108c SS |
2096 | /* Clear a bpstat so that it says we are not at any breakpoint. |
2097 | Also free any storage that is part of a bpstat. */ | |
2098 | ||
2099 | void | |
fba45db2 | 2100 | bpstat_clear (bpstat *bsp) |
c906108c SS |
2101 | { |
2102 | bpstat p; | |
2103 | bpstat q; | |
2104 | ||
2105 | if (bsp == 0) | |
2106 | return; | |
2107 | p = *bsp; | |
2108 | while (p != NULL) | |
2109 | { | |
2110 | q = p->next; | |
198757a8 | 2111 | bpstat_free (p); |
c906108c SS |
2112 | p = q; |
2113 | } | |
2114 | *bsp = NULL; | |
2115 | } | |
2116 | ||
2117 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
2118 | is part of the bpstat is copied as well. */ | |
2119 | ||
2120 | bpstat | |
fba45db2 | 2121 | bpstat_copy (bpstat bs) |
c906108c SS |
2122 | { |
2123 | bpstat p = NULL; | |
2124 | bpstat tmp; | |
2125 | bpstat retval = NULL; | |
2126 | ||
2127 | if (bs == NULL) | |
2128 | return bs; | |
2129 | ||
2130 | for (; bs != NULL; bs = bs->next) | |
2131 | { | |
2132 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
2133 | memcpy (tmp, bs, sizeof (*tmp)); | |
31cc81e9 DJ |
2134 | if (bs->commands != NULL) |
2135 | tmp->commands = copy_command_lines (bs->commands); | |
2136 | if (bs->old_val != NULL) | |
3c3185ac JK |
2137 | { |
2138 | tmp->old_val = value_copy (bs->old_val); | |
2139 | release_value (tmp->old_val); | |
2140 | } | |
31cc81e9 | 2141 | |
c906108c SS |
2142 | if (p == NULL) |
2143 | /* This is the first thing in the chain. */ | |
2144 | retval = tmp; | |
2145 | else | |
2146 | p->next = tmp; | |
2147 | p = tmp; | |
2148 | } | |
2149 | p->next = NULL; | |
2150 | return retval; | |
2151 | } | |
2152 | ||
2153 | /* Find the bpstat associated with this breakpoint */ | |
2154 | ||
2155 | bpstat | |
fba45db2 | 2156 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 2157 | { |
c5aa993b JM |
2158 | if (bsp == NULL) |
2159 | return NULL; | |
c906108c | 2160 | |
c5aa993b JM |
2161 | for (; bsp != NULL; bsp = bsp->next) |
2162 | { | |
4f8d1dc6 | 2163 | if (bsp->breakpoint_at && bsp->breakpoint_at->owner == breakpoint) |
c5aa993b JM |
2164 | return bsp; |
2165 | } | |
c906108c SS |
2166 | return NULL; |
2167 | } | |
2168 | ||
2169 | /* Find a step_resume breakpoint associated with this bpstat. | |
2170 | (If there are multiple step_resume bp's on the list, this function | |
2171 | will arbitrarily pick one.) | |
2172 | ||
2173 | It is an error to use this function if BPSTAT doesn't contain a | |
2174 | step_resume breakpoint. | |
2175 | ||
2176 | See wait_for_inferior's use of this function. */ | |
2177 | struct breakpoint * | |
fba45db2 | 2178 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c | 2179 | { |
8601f500 MS |
2180 | int current_thread; |
2181 | ||
8a3fe4f8 | 2182 | gdb_assert (bsp != NULL); |
c906108c | 2183 | |
8601f500 MS |
2184 | current_thread = pid_to_thread_id (inferior_ptid); |
2185 | ||
c906108c SS |
2186 | for (; bsp != NULL; bsp = bsp->next) |
2187 | { | |
059fb39f PM |
2188 | if ((bsp->breakpoint_at != NULL) |
2189 | && (bsp->breakpoint_at->owner->type == bp_step_resume) | |
2190 | && (bsp->breakpoint_at->owner->thread == current_thread | |
2191 | || bsp->breakpoint_at->owner->thread == -1)) | |
4f8d1dc6 | 2192 | return bsp->breakpoint_at->owner; |
c906108c SS |
2193 | } |
2194 | ||
8a3fe4f8 | 2195 | internal_error (__FILE__, __LINE__, _("No step_resume breakpoint found.")); |
c906108c SS |
2196 | } |
2197 | ||
2198 | ||
8671a17b | 2199 | /* Put in *NUM the breakpoint number of the first breakpoint we are stopped |
c906108c SS |
2200 | at. *BSP upon return is a bpstat which points to the remaining |
2201 | breakpoints stopped at (but which is not guaranteed to be good for | |
2202 | anything but further calls to bpstat_num). | |
8671a17b PA |
2203 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
2204 | Return -1 if stopped at a breakpoint that has been deleted since | |
2205 | we set it. | |
2206 | Return 1 otherwise. */ | |
c906108c SS |
2207 | |
2208 | int | |
8671a17b | 2209 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
2210 | { |
2211 | struct breakpoint *b; | |
2212 | ||
2213 | if ((*bsp) == NULL) | |
2214 | return 0; /* No more breakpoint values */ | |
8671a17b | 2215 | |
4f8d1dc6 VP |
2216 | /* We assume we'll never have several bpstats that |
2217 | correspond to a single breakpoint -- otherwise, | |
2218 | this function might return the same number more | |
2219 | than once and this will look ugly. */ | |
2220 | b = (*bsp)->breakpoint_at ? (*bsp)->breakpoint_at->owner : NULL; | |
8671a17b PA |
2221 | *bsp = (*bsp)->next; |
2222 | if (b == NULL) | |
2223 | return -1; /* breakpoint that's been deleted since */ | |
2224 | ||
2225 | *num = b->number; /* We have its number */ | |
2226 | return 1; | |
c906108c SS |
2227 | } |
2228 | ||
2229 | /* Modify BS so that the actions will not be performed. */ | |
2230 | ||
2231 | void | |
fba45db2 | 2232 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
2233 | { |
2234 | for (; bs != NULL; bs = bs->next) | |
2235 | { | |
c2b8ed2c | 2236 | free_command_lines (&bs->commands); |
c906108c SS |
2237 | if (bs->old_val != NULL) |
2238 | { | |
2239 | value_free (bs->old_val); | |
2240 | bs->old_val = NULL; | |
2241 | } | |
2242 | } | |
2243 | } | |
2244 | ||
f3b1572e PA |
2245 | /* Called when a command is about to proceed the inferior. */ |
2246 | ||
2247 | static void | |
2248 | breakpoint_about_to_proceed (void) | |
2249 | { | |
2250 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
2251 | { | |
2252 | struct thread_info *tp = inferior_thread (); | |
2253 | ||
2254 | /* Allow inferior function calls in breakpoint commands to not | |
2255 | interrupt the command list. When the call finishes | |
2256 | successfully, the inferior will be standing at the same | |
2257 | breakpoint as if nothing happened. */ | |
2258 | if (tp->in_infcall) | |
2259 | return; | |
2260 | } | |
2261 | ||
2262 | breakpoint_proceeded = 1; | |
2263 | } | |
2264 | ||
c906108c | 2265 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ |
c906108c | 2266 | static void |
4efb68b1 | 2267 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
2268 | { |
2269 | executing_breakpoint_commands = 0; | |
2270 | } | |
2271 | ||
2272 | /* Execute all the commands associated with all the breakpoints at this | |
2273 | location. Any of these commands could cause the process to proceed | |
2274 | beyond this point, etc. We look out for such changes by checking | |
347bddb7 | 2275 | the global "breakpoint_proceeded" after each command. |
c906108c | 2276 | |
347bddb7 PA |
2277 | Returns true if a breakpoint command resumed the inferior. In that |
2278 | case, it is the caller's responsibility to recall it again with the | |
2279 | bpstat of the current thread. */ | |
2280 | ||
2281 | static int | |
2282 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
2283 | { |
2284 | bpstat bs; | |
2285 | struct cleanup *old_chain; | |
347bddb7 | 2286 | int again = 0; |
c906108c SS |
2287 | |
2288 | /* Avoid endless recursion if a `source' command is contained | |
2289 | in bs->commands. */ | |
2290 | if (executing_breakpoint_commands) | |
347bddb7 | 2291 | return 0; |
c906108c SS |
2292 | |
2293 | executing_breakpoint_commands = 1; | |
2294 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
2295 | ||
c906108c SS |
2296 | /* This pointer will iterate over the list of bpstat's. */ |
2297 | bs = *bsp; | |
2298 | ||
2299 | breakpoint_proceeded = 0; | |
2300 | for (; bs != NULL; bs = bs->next) | |
2301 | { | |
6c50ab1c JB |
2302 | struct command_line *cmd; |
2303 | struct cleanup *this_cmd_tree_chain; | |
2304 | ||
2305 | /* Take ownership of the BSP's command tree, if it has one. | |
2306 | ||
2307 | The command tree could legitimately contain commands like | |
2308 | 'step' and 'next', which call clear_proceed_status, which | |
2309 | frees stop_bpstat's command tree. To make sure this doesn't | |
2310 | free the tree we're executing out from under us, we need to | |
2311 | take ownership of the tree ourselves. Since a given bpstat's | |
2312 | commands are only executed once, we don't need to copy it; we | |
2313 | can clear the pointer in the bpstat, and make sure we free | |
2314 | the tree when we're done. */ | |
c906108c | 2315 | cmd = bs->commands; |
6c50ab1c JB |
2316 | bs->commands = 0; |
2317 | this_cmd_tree_chain = make_cleanup_free_command_lines (&cmd); | |
2318 | ||
c906108c SS |
2319 | while (cmd != NULL) |
2320 | { | |
2321 | execute_control_command (cmd); | |
2322 | ||
2323 | if (breakpoint_proceeded) | |
2324 | break; | |
2325 | else | |
2326 | cmd = cmd->next; | |
2327 | } | |
6c50ab1c JB |
2328 | |
2329 | /* We can free this command tree now. */ | |
2330 | do_cleanups (this_cmd_tree_chain); | |
2331 | ||
c906108c | 2332 | if (breakpoint_proceeded) |
32c1e744 VP |
2333 | { |
2334 | if (target_can_async_p ()) | |
347bddb7 PA |
2335 | /* If we are in async mode, then the target might be still |
2336 | running, not stopped at any breakpoint, so nothing for | |
2337 | us to do here -- just return to the event loop. */ | |
2338 | ; | |
32c1e744 VP |
2339 | else |
2340 | /* In sync mode, when execute_control_command returns | |
2341 | we're already standing on the next breakpoint. | |
347bddb7 PA |
2342 | Breakpoint commands for that stop were not run, since |
2343 | execute_command does not run breakpoint commands -- | |
2344 | only command_line_handler does, but that one is not | |
2345 | involved in execution of breakpoint commands. So, we | |
2346 | can now execute breakpoint commands. It should be | |
2347 | noted that making execute_command do bpstat actions is | |
2348 | not an option -- in this case we'll have recursive | |
2349 | invocation of bpstat for each breakpoint with a | |
2350 | command, and can easily blow up GDB stack. Instead, we | |
2351 | return true, which will trigger the caller to recall us | |
2352 | with the new stop_bpstat. */ | |
2353 | again = 1; | |
2354 | break; | |
32c1e744 | 2355 | } |
c906108c | 2356 | } |
c2b8ed2c | 2357 | do_cleanups (old_chain); |
347bddb7 PA |
2358 | return again; |
2359 | } | |
2360 | ||
2361 | void | |
2362 | bpstat_do_actions (void) | |
2363 | { | |
2364 | /* Do any commands attached to breakpoint we are stopped at. */ | |
2365 | while (!ptid_equal (inferior_ptid, null_ptid) | |
2366 | && target_has_execution | |
2367 | && !is_exited (inferior_ptid) | |
2368 | && !is_executing (inferior_ptid)) | |
2369 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
2370 | and only return when it is stopped at the next breakpoint, we | |
2371 | keep doing breakpoint actions until it returns false to | |
2372 | indicate the inferior was not resumed. */ | |
2373 | if (!bpstat_do_actions_1 (&inferior_thread ()->stop_bpstat)) | |
2374 | break; | |
c906108c SS |
2375 | } |
2376 | ||
fa4727a6 DJ |
2377 | /* Print out the (old or new) value associated with a watchpoint. */ |
2378 | ||
2379 | static void | |
2380 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
2381 | { | |
2382 | if (val == NULL) | |
2383 | fprintf_unfiltered (stream, _("<unreadable>")); | |
2384 | else | |
79a45b7d TT |
2385 | { |
2386 | struct value_print_options opts; | |
2387 | get_user_print_options (&opts); | |
2388 | value_print (val, stream, &opts); | |
2389 | } | |
fa4727a6 DJ |
2390 | } |
2391 | ||
e514a9d6 | 2392 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 2393 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
2394 | by having it set different print_it values. |
2395 | ||
2396 | Current scheme: When we stop, bpstat_print() is called. It loops | |
2397 | through the bpstat list of things causing this stop, calling the | |
2398 | print_bp_stop_message function on each one. The behavior of the | |
2399 | print_bp_stop_message function depends on the print_it field of | |
2400 | bpstat. If such field so indicates, call this function here. | |
2401 | ||
2402 | Return values from this routine (ultimately used by bpstat_print() | |
2403 | and normal_stop() to decide what to do): | |
2404 | PRINT_NOTHING: Means we already printed all we needed to print, | |
2405 | don't print anything else. | |
2406 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
2407 | that something to be followed by a location. | |
2408 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
2409 | that something to be followed by a location. | |
2410 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
2411 | analysis. */ | |
c906108c | 2412 | |
917317f4 | 2413 | static enum print_stop_action |
fba45db2 | 2414 | print_it_typical (bpstat bs) |
c906108c | 2415 | { |
f7545552 | 2416 | struct cleanup *old_chain; |
4f8d1dc6 | 2417 | struct breakpoint *b; |
89f9893c | 2418 | const struct bp_location *bl; |
8b93c638 | 2419 | struct ui_stream *stb; |
f7545552 TT |
2420 | int bp_temp = 0; |
2421 | enum print_stop_action result; | |
2422 | ||
c906108c SS |
2423 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
2424 | which has since been deleted. */ | |
e514a9d6 | 2425 | if (bs->breakpoint_at == NULL) |
917317f4 | 2426 | return PRINT_UNKNOWN; |
0d381245 VP |
2427 | bl = bs->breakpoint_at; |
2428 | b = bl->owner; | |
c906108c | 2429 | |
f7545552 TT |
2430 | stb = ui_out_stream_new (uiout); |
2431 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
2432 | ||
4f8d1dc6 | 2433 | switch (b->type) |
c906108c | 2434 | { |
e514a9d6 JM |
2435 | case bp_breakpoint: |
2436 | case bp_hardware_breakpoint: | |
2cec12e5 | 2437 | bp_temp = bs->breakpoint_at->owner->disposition == disp_del; |
0d381245 VP |
2438 | if (bl->address != bl->requested_address) |
2439 | breakpoint_adjustment_warning (bl->requested_address, | |
2440 | bl->address, | |
4f8d1dc6 VP |
2441 | b->number, 1); |
2442 | annotate_breakpoint (b->number); | |
2cec12e5 AR |
2443 | if (bp_temp) |
2444 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
2445 | else | |
2446 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 2447 | if (ui_out_is_mi_like_p (uiout)) |
2cec12e5 AR |
2448 | { |
2449 | ui_out_field_string (uiout, "reason", | |
2450 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
2451 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
2452 | } | |
4f8d1dc6 | 2453 | ui_out_field_int (uiout, "bkptno", b->number); |
8b93c638 | 2454 | ui_out_text (uiout, ", "); |
f7545552 | 2455 | result = PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2456 | break; |
2457 | ||
2458 | case bp_shlib_event: | |
917317f4 JM |
2459 | /* Did we stop because the user set the stop_on_solib_events |
2460 | variable? (If so, we report this as a generic, "Stopped due | |
2461 | to shlib event" message.) */ | |
a3f17187 | 2462 | printf_filtered (_("Stopped due to shared library event\n")); |
f7545552 | 2463 | result = PRINT_NOTHING; |
e514a9d6 JM |
2464 | break; |
2465 | ||
c4093a6a JM |
2466 | case bp_thread_event: |
2467 | /* Not sure how we will get here. | |
2468 | GDB should not stop for these breakpoints. */ | |
a3f17187 | 2469 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 2470 | result = PRINT_NOTHING; |
c4093a6a JM |
2471 | break; |
2472 | ||
1900040c MS |
2473 | case bp_overlay_event: |
2474 | /* By analogy with the thread event, GDB should not stop for these. */ | |
a3f17187 | 2475 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 2476 | result = PRINT_NOTHING; |
1900040c MS |
2477 | break; |
2478 | ||
0fd8e87f UW |
2479 | case bp_longjmp_master: |
2480 | /* These should never be enabled. */ | |
2481 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
2482 | result = PRINT_NOTHING; | |
2483 | break; | |
2484 | ||
e514a9d6 JM |
2485 | case bp_watchpoint: |
2486 | case bp_hardware_watchpoint: | |
fa4727a6 DJ |
2487 | annotate_watchpoint (b->number); |
2488 | if (ui_out_is_mi_like_p (uiout)) | |
2489 | ui_out_field_string | |
2490 | (uiout, "reason", | |
2491 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
2492 | mention (b); | |
f7545552 | 2493 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
fa4727a6 DJ |
2494 | ui_out_text (uiout, "\nOld value = "); |
2495 | watchpoint_value_print (bs->old_val, stb->stream); | |
2496 | ui_out_field_stream (uiout, "old", stb); | |
2497 | ui_out_text (uiout, "\nNew value = "); | |
2498 | watchpoint_value_print (b->val, stb->stream); | |
2499 | ui_out_field_stream (uiout, "new", stb); | |
fa4727a6 | 2500 | ui_out_text (uiout, "\n"); |
e514a9d6 | 2501 | /* More than one watchpoint may have been triggered. */ |
f7545552 | 2502 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
2503 | break; |
2504 | ||
2505 | case bp_read_watchpoint: | |
9dc5e2a9 | 2506 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2507 | ui_out_field_string |
2508 | (uiout, "reason", | |
2509 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 2510 | mention (b); |
f7545552 | 2511 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 2512 | ui_out_text (uiout, "\nValue = "); |
fa4727a6 | 2513 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 2514 | ui_out_field_stream (uiout, "value", stb); |
8b93c638 | 2515 | ui_out_text (uiout, "\n"); |
f7545552 | 2516 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
2517 | break; |
2518 | ||
2519 | case bp_access_watchpoint: | |
fa4727a6 | 2520 | if (bs->old_val != NULL) |
8b93c638 | 2521 | { |
4f8d1dc6 | 2522 | annotate_watchpoint (b->number); |
9dc5e2a9 | 2523 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2524 | ui_out_field_string |
2525 | (uiout, "reason", | |
2526 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 2527 | mention (b); |
f7545552 | 2528 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 2529 | ui_out_text (uiout, "\nOld value = "); |
fa4727a6 | 2530 | watchpoint_value_print (bs->old_val, stb->stream); |
8b93c638 | 2531 | ui_out_field_stream (uiout, "old", stb); |
8b93c638 JM |
2532 | ui_out_text (uiout, "\nNew value = "); |
2533 | } | |
2534 | else | |
2535 | { | |
4f8d1dc6 | 2536 | mention (b); |
9dc5e2a9 | 2537 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2538 | ui_out_field_string |
2539 | (uiout, "reason", | |
2540 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
f7545552 | 2541 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2542 | ui_out_text (uiout, "\nValue = "); |
2543 | } | |
fa4727a6 | 2544 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 2545 | ui_out_field_stream (uiout, "new", stb); |
8b93c638 | 2546 | ui_out_text (uiout, "\n"); |
f7545552 | 2547 | result = PRINT_UNKNOWN; |
e514a9d6 | 2548 | break; |
4ce44c66 | 2549 | |
e514a9d6 JM |
2550 | /* Fall through, we don't deal with these types of breakpoints |
2551 | here. */ | |
2552 | ||
11cf8741 | 2553 | case bp_finish: |
9dc5e2a9 | 2554 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2555 | ui_out_field_string |
2556 | (uiout, "reason", | |
2557 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
f7545552 | 2558 | result = PRINT_UNKNOWN; |
8b93c638 JM |
2559 | break; |
2560 | ||
e514a9d6 | 2561 | case bp_until: |
9dc5e2a9 | 2562 | if (ui_out_is_mi_like_p (uiout)) |
1fbc2a49 NR |
2563 | ui_out_field_string |
2564 | (uiout, "reason", | |
2565 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
f7545552 | 2566 | result = PRINT_UNKNOWN; |
8b93c638 JM |
2567 | break; |
2568 | ||
c2d11a7d | 2569 | case bp_none: |
e514a9d6 JM |
2570 | case bp_longjmp: |
2571 | case bp_longjmp_resume: | |
2572 | case bp_step_resume: | |
e514a9d6 JM |
2573 | case bp_watchpoint_scope: |
2574 | case bp_call_dummy: | |
1042e4c0 | 2575 | case bp_tracepoint: |
e514a9d6 | 2576 | default: |
f7545552 TT |
2577 | result = PRINT_UNKNOWN; |
2578 | break; | |
e514a9d6 | 2579 | } |
f7545552 TT |
2580 | |
2581 | do_cleanups (old_chain); | |
2582 | return result; | |
e514a9d6 JM |
2583 | } |
2584 | ||
2585 | /* Generic routine for printing messages indicating why we | |
2586 | stopped. The behavior of this function depends on the value | |
2587 | 'print_it' in the bpstat structure. Under some circumstances we | |
2588 | may decide not to print anything here and delegate the task to | |
2589 | normal_stop(). */ | |
2590 | ||
2591 | static enum print_stop_action | |
2592 | print_bp_stop_message (bpstat bs) | |
2593 | { | |
2594 | switch (bs->print_it) | |
2595 | { | |
2596 | case print_it_noop: | |
2597 | /* Nothing should be printed for this bpstat entry. */ | |
2598 | return PRINT_UNKNOWN; | |
2599 | break; | |
2600 | ||
2601 | case print_it_done: | |
2602 | /* We still want to print the frame, but we already printed the | |
2603 | relevant messages. */ | |
2604 | return PRINT_SRC_AND_LOC; | |
2605 | break; | |
2606 | ||
2607 | case print_it_normal: | |
4f8d1dc6 | 2608 | { |
89f9893c | 2609 | const struct bp_location *bl = bs->breakpoint_at; |
4f8d1dc6 VP |
2610 | struct breakpoint *b = bl ? bl->owner : NULL; |
2611 | ||
2612 | /* Normal case. Call the breakpoint's print_it method, or | |
2613 | print_it_typical. */ | |
2614 | /* FIXME: how breakpoint can ever be NULL here? */ | |
2615 | if (b != NULL && b->ops != NULL && b->ops->print_it != NULL) | |
2616 | return b->ops->print_it (b); | |
2617 | else | |
2618 | return print_it_typical (bs); | |
2619 | } | |
2620 | break; | |
3086aeae | 2621 | |
e514a9d6 | 2622 | default: |
8e65ff28 | 2623 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2624 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 2625 | break; |
c906108c | 2626 | } |
c906108c SS |
2627 | } |
2628 | ||
e514a9d6 JM |
2629 | /* Print a message indicating what happened. This is called from |
2630 | normal_stop(). The input to this routine is the head of the bpstat | |
2631 | list - a list of the eventpoints that caused this stop. This | |
2632 | routine calls the generic print routine for printing a message | |
2633 | about reasons for stopping. This will print (for example) the | |
2634 | "Breakpoint n," part of the output. The return value of this | |
2635 | routine is one of: | |
c906108c | 2636 | |
917317f4 JM |
2637 | PRINT_UNKNOWN: Means we printed nothing |
2638 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2639 | code to print the location. An example is |
2640 | "Breakpoint 1, " which should be followed by | |
2641 | the location. | |
917317f4 | 2642 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2643 | to also print the location part of the message. |
2644 | An example is the catch/throw messages, which | |
917317f4 JM |
2645 | don't require a location appended to the end. |
2646 | PRINT_NOTHING: We have done some printing and we don't need any | |
2647 | further info to be printed.*/ | |
c906108c | 2648 | |
917317f4 | 2649 | enum print_stop_action |
fba45db2 | 2650 | bpstat_print (bpstat bs) |
c906108c SS |
2651 | { |
2652 | int val; | |
c5aa993b | 2653 | |
c906108c | 2654 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2655 | (Currently all watchpoints go on the bpstat whether hit or not. |
2656 | That probably could (should) be changed, provided care is taken | |
c906108c | 2657 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2658 | for (; bs; bs = bs->next) |
2659 | { | |
2660 | val = print_bp_stop_message (bs); | |
2661 | if (val == PRINT_SRC_ONLY | |
2662 | || val == PRINT_SRC_AND_LOC | |
2663 | || val == PRINT_NOTHING) | |
2664 | return val; | |
2665 | } | |
c906108c | 2666 | |
e514a9d6 JM |
2667 | /* We reached the end of the chain, or we got a null BS to start |
2668 | with and nothing was printed. */ | |
917317f4 | 2669 | return PRINT_UNKNOWN; |
c906108c SS |
2670 | } |
2671 | ||
2672 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2673 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2674 | The argument is a "struct expression *" that has been cast to char * to | |
2675 | make it pass through catch_errors. */ | |
2676 | ||
2677 | static int | |
4efb68b1 | 2678 | breakpoint_cond_eval (void *exp) |
c906108c | 2679 | { |
278cd55f | 2680 | struct value *mark = value_mark (); |
c5aa993b | 2681 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2682 | value_free_to_mark (mark); |
2683 | return i; | |
2684 | } | |
2685 | ||
2686 | /* Allocate a new bpstat and chain it to the current one. */ | |
2687 | ||
2688 | static bpstat | |
89f9893c | 2689 | bpstat_alloc (const struct bp_location *bl, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
2690 | { |
2691 | bpstat bs; | |
2692 | ||
2693 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2694 | cbs->next = bs; | |
4f8d1dc6 | 2695 | bs->breakpoint_at = bl; |
c906108c SS |
2696 | /* If the condition is false, etc., don't do the commands. */ |
2697 | bs->commands = NULL; | |
2698 | bs->old_val = NULL; | |
2699 | bs->print_it = print_it_normal; | |
2700 | return bs; | |
2701 | } | |
2702 | \f | |
d983da9c DJ |
2703 | /* The target has stopped with waitstatus WS. Check if any hardware |
2704 | watchpoints have triggered, according to the target. */ | |
2705 | ||
2706 | int | |
2707 | watchpoints_triggered (struct target_waitstatus *ws) | |
2708 | { | |
d92524f1 | 2709 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
2710 | CORE_ADDR addr; |
2711 | struct breakpoint *b; | |
2712 | ||
2713 | if (!stopped_by_watchpoint) | |
2714 | { | |
2715 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
2716 | as not triggered. */ | |
2717 | ALL_BREAKPOINTS (b) | |
2718 | if (b->type == bp_hardware_watchpoint | |
2719 | || b->type == bp_read_watchpoint | |
2720 | || b->type == bp_access_watchpoint) | |
2721 | b->watchpoint_triggered = watch_triggered_no; | |
2722 | ||
2723 | return 0; | |
2724 | } | |
2725 | ||
2726 | if (!target_stopped_data_address (¤t_target, &addr)) | |
2727 | { | |
2728 | /* We were stopped by a watchpoint, but we don't know where. | |
2729 | Mark all watchpoints as unknown. */ | |
2730 | ALL_BREAKPOINTS (b) | |
2731 | if (b->type == bp_hardware_watchpoint | |
2732 | || b->type == bp_read_watchpoint | |
2733 | || b->type == bp_access_watchpoint) | |
2734 | b->watchpoint_triggered = watch_triggered_unknown; | |
2735 | ||
2736 | return stopped_by_watchpoint; | |
2737 | } | |
2738 | ||
2739 | /* The target could report the data address. Mark watchpoints | |
2740 | affected by this data address as triggered, and all others as not | |
2741 | triggered. */ | |
2742 | ||
2743 | ALL_BREAKPOINTS (b) | |
2744 | if (b->type == bp_hardware_watchpoint | |
2745 | || b->type == bp_read_watchpoint | |
2746 | || b->type == bp_access_watchpoint) | |
2747 | { | |
a5606eee | 2748 | struct bp_location *loc; |
d983da9c DJ |
2749 | struct value *v; |
2750 | ||
2751 | b->watchpoint_triggered = watch_triggered_no; | |
a5606eee VP |
2752 | for (loc = b->loc; loc; loc = loc->next) |
2753 | /* Exact match not required. Within range is | |
2754 | sufficient. */ | |
5009afc5 AS |
2755 | if (target_watchpoint_addr_within_range (¤t_target, |
2756 | addr, loc->address, | |
2757 | loc->length)) | |
a5606eee VP |
2758 | { |
2759 | b->watchpoint_triggered = watch_triggered_yes; | |
2760 | break; | |
2761 | } | |
d983da9c DJ |
2762 | } |
2763 | ||
2764 | return 1; | |
2765 | } | |
2766 | ||
c906108c SS |
2767 | /* Possible return values for watchpoint_check (this can't be an enum |
2768 | because of check_errors). */ | |
2769 | /* The watchpoint has been deleted. */ | |
2770 | #define WP_DELETED 1 | |
2771 | /* The value has changed. */ | |
2772 | #define WP_VALUE_CHANGED 2 | |
2773 | /* The value has not changed. */ | |
2774 | #define WP_VALUE_NOT_CHANGED 3 | |
2775 | ||
2776 | #define BP_TEMPFLAG 1 | |
2777 | #define BP_HARDWAREFLAG 2 | |
2778 | ||
2779 | /* Check watchpoint condition. */ | |
2780 | ||
2781 | static int | |
4efb68b1 | 2782 | watchpoint_check (void *p) |
c906108c SS |
2783 | { |
2784 | bpstat bs = (bpstat) p; | |
2785 | struct breakpoint *b; | |
2786 | struct frame_info *fr; | |
2787 | int within_current_scope; | |
2788 | ||
4f8d1dc6 | 2789 | b = bs->breakpoint_at->owner; |
c906108c SS |
2790 | |
2791 | if (b->exp_valid_block == NULL) | |
2792 | within_current_scope = 1; | |
2793 | else | |
2794 | { | |
edb3359d DJ |
2795 | struct frame_info *frame = get_current_frame (); |
2796 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
2797 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
2798 | ||
101dcfbe | 2799 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 2800 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
2801 | |
2802 | /* If we've gotten confused in the unwinder, we might have | |
2803 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
2804 | if (within_current_scope) |
2805 | { | |
2806 | struct symbol *function; | |
2807 | ||
2808 | function = get_frame_function (fr); | |
2809 | if (function == NULL | |
2810 | || !contained_in (b->exp_valid_block, | |
2811 | SYMBOL_BLOCK_VALUE (function))) | |
2812 | within_current_scope = 0; | |
2813 | } | |
69fbadd5 | 2814 | |
c12260ac CV |
2815 | /* in_function_epilogue_p() returns a non-zero value if we're still |
2816 | in the function but the stack frame has already been invalidated. | |
2817 | Since we can't rely on the values of local variables after the | |
2818 | stack has been destroyed, we are treating the watchpoint in that | |
edb3359d DJ |
2819 | state as `not changed' without further checking. Don't mark |
2820 | watchpoints as changed if the current frame is in an epilogue - | |
2821 | even if they are in some other frame, our view of the stack | |
2822 | is likely to be wrong. */ | |
2823 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) | |
2824 | return WP_VALUE_NOT_CHANGED; | |
fb14de7b | 2825 | |
edb3359d | 2826 | if (within_current_scope) |
c906108c SS |
2827 | /* If we end up stopping, the current frame will get selected |
2828 | in normal_stop. So this call to select_frame won't affect | |
2829 | the user. */ | |
0f7d239c | 2830 | select_frame (fr); |
c906108c | 2831 | } |
c5aa993b | 2832 | |
c906108c SS |
2833 | if (within_current_scope) |
2834 | { | |
2835 | /* We use value_{,free_to_}mark because it could be a | |
2836 | *long* time before we return to the command level and | |
c5aa993b JM |
2837 | call free_all_values. We can't call free_all_values because |
2838 | we might be in the middle of evaluating a function call. */ | |
c906108c | 2839 | |
278cd55f | 2840 | struct value *mark = value_mark (); |
fa4727a6 DJ |
2841 | struct value *new_val; |
2842 | ||
2843 | fetch_watchpoint_value (b->exp, &new_val, NULL, NULL); | |
2844 | if ((b->val != NULL) != (new_val != NULL) | |
2845 | || (b->val != NULL && !value_equal (b->val, new_val))) | |
c906108c | 2846 | { |
fa4727a6 DJ |
2847 | if (new_val != NULL) |
2848 | { | |
2849 | release_value (new_val); | |
2850 | value_free_to_mark (mark); | |
2851 | } | |
c906108c SS |
2852 | bs->old_val = b->val; |
2853 | b->val = new_val; | |
fa4727a6 | 2854 | b->val_valid = 1; |
c906108c SS |
2855 | /* We will stop here */ |
2856 | return WP_VALUE_CHANGED; | |
2857 | } | |
2858 | else | |
2859 | { | |
2860 | /* Nothing changed, don't do anything. */ | |
2861 | value_free_to_mark (mark); | |
2862 | /* We won't stop here */ | |
2863 | return WP_VALUE_NOT_CHANGED; | |
2864 | } | |
2865 | } | |
2866 | else | |
2867 | { | |
2868 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2869 | if we temporarily ignored the watchpoint, then when |
2870 | we reenter the block in which it is valid it contains | |
2871 | garbage (in the case of a function, it may have two | |
2872 | garbage values, one before and one after the prologue). | |
2873 | So we can't even detect the first assignment to it and | |
2874 | watch after that (since the garbage may or may not equal | |
2875 | the first value assigned). */ | |
4ce44c66 JM |
2876 | /* We print all the stop information in print_it_typical(), but |
2877 | in this case, by the time we call print_it_typical() this bp | |
2878 | will be deleted already. So we have no choice but print the | |
2879 | information here. */ | |
9dc5e2a9 | 2880 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2881 | ui_out_field_string |
2882 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 2883 | ui_out_text (uiout, "\nWatchpoint "); |
4f8d1dc6 | 2884 | ui_out_field_int (uiout, "wpnum", b->number); |
8b93c638 JM |
2885 | ui_out_text (uiout, " deleted because the program has left the block in\n\ |
2886 | which its expression is valid.\n"); | |
4ce44c66 | 2887 | |
c906108c | 2888 | if (b->related_breakpoint) |
b5de0fa7 EZ |
2889 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2890 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
2891 | |
2892 | return WP_DELETED; | |
2893 | } | |
2894 | } | |
2895 | ||
18a18393 VP |
2896 | /* Return true if it looks like target has stopped due to hitting |
2897 | breakpoint location BL. This function does not check if we | |
2898 | should stop, only if BL explains the stop. */ | |
2899 | static int | |
2900 | bpstat_check_location (const struct bp_location *bl, CORE_ADDR bp_addr) | |
2901 | { | |
2902 | struct breakpoint *b = bl->owner; | |
2903 | ||
2904 | if (b->type != bp_watchpoint | |
2905 | && b->type != bp_hardware_watchpoint | |
2906 | && b->type != bp_read_watchpoint | |
2907 | && b->type != bp_access_watchpoint | |
2908 | && b->type != bp_hardware_breakpoint | |
fe798b75 | 2909 | && b->type != bp_catchpoint) /* a non-watchpoint bp */ |
18a18393 VP |
2910 | { |
2911 | if (bl->address != bp_addr) /* address doesn't match */ | |
2912 | return 0; | |
2913 | if (overlay_debugging /* unmapped overlay section */ | |
2914 | && section_is_overlay (bl->section) | |
2915 | && !section_is_mapped (bl->section)) | |
2916 | return 0; | |
2917 | } | |
2918 | ||
2919 | /* Continuable hardware watchpoints are treated as non-existent if the | |
2920 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
2921 | some data address). Otherwise gdb won't stop on a break instruction | |
2922 | in the code (not from a breakpoint) when a hardware watchpoint has | |
2923 | been defined. Also skip watchpoints which we know did not trigger | |
2924 | (did not match the data address). */ | |
2925 | ||
2926 | if ((b->type == bp_hardware_watchpoint | |
2927 | || b->type == bp_read_watchpoint | |
2928 | || b->type == bp_access_watchpoint) | |
2929 | && b->watchpoint_triggered == watch_triggered_no) | |
2930 | return 0; | |
2931 | ||
2932 | if (b->type == bp_hardware_breakpoint) | |
2933 | { | |
2934 | if (bl->address != bp_addr) | |
2935 | return 0; | |
2936 | if (overlay_debugging /* unmapped overlay section */ | |
2937 | && section_is_overlay (bl->section) | |
2938 | && !section_is_mapped (bl->section)) | |
2939 | return 0; | |
2940 | } | |
ce78b96d | 2941 | |
ce78b96d JB |
2942 | if (b->type == bp_catchpoint) |
2943 | { | |
2944 | gdb_assert (b->ops != NULL && b->ops->breakpoint_hit != NULL); | |
2945 | if (!b->ops->breakpoint_hit (b)) | |
2946 | return 0; | |
2947 | } | |
2948 | ||
18a18393 VP |
2949 | return 1; |
2950 | } | |
2951 | ||
2952 | /* If BS refers to a watchpoint, determine if the watched values | |
2953 | has actually changed, and we should stop. If not, set BS->stop | |
2954 | to 0. */ | |
2955 | static void | |
2956 | bpstat_check_watchpoint (bpstat bs) | |
2957 | { | |
2958 | const struct bp_location *bl = bs->breakpoint_at; | |
2959 | struct breakpoint *b = bl->owner; | |
2960 | ||
2961 | if (b->type == bp_watchpoint | |
2962 | || b->type == bp_read_watchpoint | |
2963 | || b->type == bp_access_watchpoint | |
2964 | || b->type == bp_hardware_watchpoint) | |
2965 | { | |
2966 | CORE_ADDR addr; | |
2967 | struct value *v; | |
2968 | int must_check_value = 0; | |
2969 | ||
2970 | if (b->type == bp_watchpoint) | |
2971 | /* For a software watchpoint, we must always check the | |
2972 | watched value. */ | |
2973 | must_check_value = 1; | |
2974 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
2975 | /* We have a hardware watchpoint (read, write, or access) | |
2976 | and the target earlier reported an address watched by | |
2977 | this watchpoint. */ | |
2978 | must_check_value = 1; | |
2979 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
2980 | && b->type == bp_hardware_watchpoint) | |
2981 | /* We were stopped by a hardware watchpoint, but the target could | |
2982 | not report the data address. We must check the watchpoint's | |
2983 | value. Access and read watchpoints are out of luck; without | |
2984 | a data address, we can't figure it out. */ | |
2985 | must_check_value = 1; | |
2986 | ||
2987 | if (must_check_value) | |
2988 | { | |
2989 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
2990 | b->number); | |
2991 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2992 | int e = catch_errors (watchpoint_check, bs, message, | |
2993 | RETURN_MASK_ALL); | |
2994 | do_cleanups (cleanups); | |
2995 | switch (e) | |
2996 | { | |
2997 | case WP_DELETED: | |
2998 | /* We've already printed what needs to be printed. */ | |
2999 | bs->print_it = print_it_done; | |
3000 | /* Stop. */ | |
3001 | break; | |
3002 | case WP_VALUE_CHANGED: | |
3003 | if (b->type == bp_read_watchpoint) | |
3004 | { | |
3005 | /* Don't stop: read watchpoints shouldn't fire if | |
3006 | the value has changed. This is for targets | |
3007 | which cannot set read-only watchpoints. */ | |
3008 | bs->print_it = print_it_noop; | |
3009 | bs->stop = 0; | |
3010 | } | |
3011 | break; | |
3012 | case WP_VALUE_NOT_CHANGED: | |
3013 | if (b->type == bp_hardware_watchpoint | |
3014 | || b->type == bp_watchpoint) | |
3015 | { | |
3016 | /* Don't stop: write watchpoints shouldn't fire if | |
3017 | the value hasn't changed. */ | |
3018 | bs->print_it = print_it_noop; | |
3019 | bs->stop = 0; | |
3020 | } | |
3021 | /* Stop. */ | |
3022 | break; | |
3023 | default: | |
3024 | /* Can't happen. */ | |
3025 | case 0: | |
3026 | /* Error from catch_errors. */ | |
3027 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); | |
3028 | if (b->related_breakpoint) | |
3029 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
3030 | b->disposition = disp_del_at_next_stop; | |
3031 | /* We've already printed what needs to be printed. */ | |
3032 | bs->print_it = print_it_done; | |
3033 | break; | |
3034 | } | |
3035 | } | |
3036 | else /* must_check_value == 0 */ | |
3037 | { | |
3038 | /* This is a case where some watchpoint(s) triggered, but | |
3039 | not at the address of this watchpoint, or else no | |
3040 | watchpoint triggered after all. So don't print | |
3041 | anything for this watchpoint. */ | |
3042 | bs->print_it = print_it_noop; | |
3043 | bs->stop = 0; | |
3044 | } | |
3045 | } | |
3046 | } | |
3047 | ||
3048 | ||
3049 | /* Check conditions (condition proper, frame, thread and ignore count) | |
3050 | of breakpoint referred to by BS. If we should not stop for this | |
3051 | breakpoint, set BS->stop to 0. */ | |
3052 | static void | |
3053 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
3054 | { | |
3055 | int thread_id = pid_to_thread_id (ptid); | |
3056 | const struct bp_location *bl = bs->breakpoint_at; | |
3057 | struct breakpoint *b = bl->owner; | |
3058 | ||
3059 | if (frame_id_p (b->frame_id) | |
edb3359d | 3060 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 VP |
3061 | bs->stop = 0; |
3062 | else if (bs->stop) | |
3063 | { | |
3064 | int value_is_zero = 0; | |
3065 | ||
3066 | /* If this is a scope breakpoint, mark the associated | |
3067 | watchpoint as triggered so that we will handle the | |
3068 | out-of-scope event. We'll get to the watchpoint next | |
3069 | iteration. */ | |
3070 | if (b->type == bp_watchpoint_scope) | |
3071 | b->related_breakpoint->watchpoint_triggered = watch_triggered_yes; | |
3072 | ||
3073 | if (bl->cond && bl->owner->disposition != disp_del_at_next_stop) | |
3074 | { | |
c5bc3a77 DJ |
3075 | /* We use value_mark and value_free_to_mark because it could |
3076 | be a long time before we return to the command level and | |
3077 | call free_all_values. We can't call free_all_values | |
3078 | because we might be in the middle of evaluating a | |
3079 | function call. */ | |
3080 | struct value *mark = value_mark (); | |
3081 | ||
edb3359d DJ |
3082 | /* Need to select the frame, with all that implies so that |
3083 | the conditions will have the right context. Because we | |
3084 | use the frame, we will not see an inlined function's | |
3085 | variables when we arrive at a breakpoint at the start | |
3086 | of the inlined function; the current frame will be the | |
3087 | call site. */ | |
18a18393 VP |
3088 | select_frame (get_current_frame ()); |
3089 | value_is_zero | |
3090 | = catch_errors (breakpoint_cond_eval, (bl->cond), | |
3091 | "Error in testing breakpoint condition:\n", | |
3092 | RETURN_MASK_ALL); | |
3093 | /* FIXME-someday, should give breakpoint # */ | |
c5bc3a77 | 3094 | value_free_to_mark (mark); |
18a18393 VP |
3095 | } |
3096 | if (bl->cond && value_is_zero) | |
3097 | { | |
3098 | bs->stop = 0; | |
3099 | } | |
3100 | else if (b->thread != -1 && b->thread != thread_id) | |
3101 | { | |
3102 | bs->stop = 0; | |
3103 | } | |
3104 | else if (b->ignore_count > 0) | |
3105 | { | |
3106 | b->ignore_count--; | |
3107 | annotate_ignore_count_change (); | |
3108 | bs->stop = 0; | |
3109 | /* Increase the hit count even though we don't | |
3110 | stop. */ | |
3111 | ++(b->hit_count); | |
3112 | } | |
3113 | } | |
3114 | } | |
3115 | ||
3116 | ||
9709f61c | 3117 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 3118 | BP_ADDR in thread PTID. |
c906108c | 3119 | |
d983da9c | 3120 | Determine whether we stopped at a breakpoint, etc, or whether we |
c906108c SS |
3121 | don't understand this stop. Result is a chain of bpstat's such that: |
3122 | ||
c5aa993b | 3123 | if we don't understand the stop, the result is a null pointer. |
c906108c | 3124 | |
c5aa993b | 3125 | if we understand why we stopped, the result is not null. |
c906108c | 3126 | |
c5aa993b JM |
3127 | Each element of the chain refers to a particular breakpoint or |
3128 | watchpoint at which we have stopped. (We may have stopped for | |
3129 | several reasons concurrently.) | |
c906108c | 3130 | |
c5aa993b JM |
3131 | Each element of the chain has valid next, breakpoint_at, |
3132 | commands, FIXME??? fields. */ | |
c906108c SS |
3133 | |
3134 | bpstat | |
d983da9c | 3135 | bpstat_stop_status (CORE_ADDR bp_addr, ptid_t ptid) |
c906108c | 3136 | { |
0d381245 | 3137 | struct breakpoint *b = NULL; |
89f9893c | 3138 | const struct bp_location *bl; |
20874c92 | 3139 | struct bp_location *loc; |
c906108c SS |
3140 | /* Root of the chain of bpstat's */ |
3141 | struct bpstats root_bs[1]; | |
3142 | /* Pointer to the last thing in the chain currently. */ | |
3143 | bpstat bs = root_bs; | |
20874c92 | 3144 | int ix; |
d832cb68 | 3145 | int need_remove_insert; |
c906108c | 3146 | |
0d381245 | 3147 | ALL_BP_LOCATIONS (bl) |
c5aa993b | 3148 | { |
0d381245 VP |
3149 | b = bl->owner; |
3150 | gdb_assert (b); | |
468d015d | 3151 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) |
c5aa993b JM |
3152 | continue; |
3153 | ||
a5606eee VP |
3154 | /* For hardware watchpoints, we look only at the first location. |
3155 | The watchpoint_check function will work on entire expression, | |
3156 | not the individual locations. For read watchopints, the | |
3157 | watchpoints_triggered function have checked all locations | |
3158 | alrea | |
3159 | */ | |
3160 | if (b->type == bp_hardware_watchpoint && bl != b->loc) | |
3161 | continue; | |
3162 | ||
18a18393 VP |
3163 | if (!bpstat_check_location (bl, bp_addr)) |
3164 | continue; | |
3165 | ||
c5aa993b JM |
3166 | /* Come here if it's a watchpoint, or if the break address matches */ |
3167 | ||
0d381245 | 3168 | bs = bpstat_alloc (bl, bs); /* Alloc a bpstat to explain stop */ |
c5aa993b | 3169 | |
18a18393 VP |
3170 | /* Assume we stop. Should we find watchpoint that is not actually |
3171 | triggered, or if condition of breakpoint is false, we'll reset | |
3172 | 'stop' to 0. */ | |
c5aa993b JM |
3173 | bs->stop = 1; |
3174 | bs->print = 1; | |
3175 | ||
18a18393 VP |
3176 | bpstat_check_watchpoint (bs); |
3177 | if (!bs->stop) | |
3178 | continue; | |
c5aa993b | 3179 | |
0fd8e87f UW |
3180 | if (b->type == bp_thread_event || b->type == bp_overlay_event |
3181 | || b->type == bp_longjmp_master) | |
18a18393 | 3182 | /* We do not stop for these. */ |
c5aa993b JM |
3183 | bs->stop = 0; |
3184 | else | |
18a18393 VP |
3185 | bpstat_check_breakpoint_conditions (bs, ptid); |
3186 | ||
3187 | if (bs->stop) | |
c5aa993b | 3188 | { |
18a18393 | 3189 | ++(b->hit_count); |
d983da9c | 3190 | |
18a18393 VP |
3191 | /* We will stop here */ |
3192 | if (b->disposition == disp_disable) | |
c5aa993b | 3193 | { |
514f746b AR |
3194 | if (b->enable_state != bp_permanent) |
3195 | b->enable_state = bp_disabled; | |
b60e7edf | 3196 | update_global_location_list (0); |
c5aa993b | 3197 | } |
18a18393 VP |
3198 | if (b->silent) |
3199 | bs->print = 0; | |
3200 | bs->commands = b->commands; | |
059fb39f PM |
3201 | if (bs->commands |
3202 | && (strcmp ("silent", bs->commands->line) == 0 | |
3203 | || (xdb_commands && strcmp ("Q", bs->commands->line) == 0))) | |
c5aa993b | 3204 | { |
18a18393 VP |
3205 | bs->commands = bs->commands->next; |
3206 | bs->print = 0; | |
c5aa993b | 3207 | } |
18a18393 | 3208 | bs->commands = copy_command_lines (bs->commands); |
c5aa993b | 3209 | } |
18a18393 | 3210 | |
c5aa993b JM |
3211 | /* Print nothing for this entry if we dont stop or if we dont print. */ |
3212 | if (bs->stop == 0 || bs->print == 0) | |
3213 | bs->print_it = print_it_noop; | |
3214 | } | |
c906108c | 3215 | |
20874c92 VP |
3216 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) |
3217 | { | |
3218 | if (loc->address == bp_addr) | |
3219 | { | |
3220 | bs = bpstat_alloc (loc, bs); | |
3221 | /* For hits of moribund locations, we should just proceed. */ | |
3222 | bs->stop = 0; | |
3223 | bs->print = 0; | |
3224 | bs->print_it = print_it_noop; | |
3225 | } | |
3226 | } | |
3227 | ||
c906108c SS |
3228 | bs->next = NULL; /* Terminate the chain */ |
3229 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
3230 | ||
d983da9c DJ |
3231 | /* If we aren't stopping, the value of some hardware watchpoint may |
3232 | not have changed, but the intermediate memory locations we are | |
3233 | watching may have. Don't bother if we're stopping; this will get | |
3234 | done later. */ | |
3235 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3236 | if (bs->stop) | |
3237 | break; | |
3238 | ||
d832cb68 | 3239 | need_remove_insert = 0; |
d983da9c DJ |
3240 | if (bs == NULL) |
3241 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3242 | if (!bs->stop | |
20874c92 | 3243 | && bs->breakpoint_at->owner |
d983da9c DJ |
3244 | && (bs->breakpoint_at->owner->type == bp_hardware_watchpoint |
3245 | || bs->breakpoint_at->owner->type == bp_read_watchpoint | |
3246 | || bs->breakpoint_at->owner->type == bp_access_watchpoint)) | |
3247 | { | |
a5606eee VP |
3248 | /* remove/insert can invalidate bs->breakpoint_at, if this |
3249 | location is no longer used by the watchpoint. Prevent | |
3250 | further code from trying to use it. */ | |
3251 | bs->breakpoint_at = NULL; | |
d832cb68 | 3252 | need_remove_insert = 1; |
d983da9c DJ |
3253 | } |
3254 | ||
d832cb68 DD |
3255 | if (need_remove_insert) |
3256 | { | |
3257 | remove_breakpoints (); | |
3258 | insert_breakpoints (); | |
3259 | } | |
3260 | ||
d983da9c | 3261 | return root_bs->next; |
c906108c SS |
3262 | } |
3263 | \f | |
3264 | /* Tell what to do about this bpstat. */ | |
3265 | struct bpstat_what | |
fba45db2 | 3266 | bpstat_what (bpstat bs) |
c906108c SS |
3267 | { |
3268 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
3269 | enum class |
3270 | { | |
3271 | /* This bpstat element has no effect on the main_action. */ | |
3272 | no_effect = 0, | |
3273 | ||
3274 | /* There was a watchpoint, stop but don't print. */ | |
3275 | wp_silent, | |
c906108c | 3276 | |
c5aa993b JM |
3277 | /* There was a watchpoint, stop and print. */ |
3278 | wp_noisy, | |
c906108c | 3279 | |
c5aa993b JM |
3280 | /* There was a breakpoint but we're not stopping. */ |
3281 | bp_nostop, | |
c906108c | 3282 | |
c5aa993b JM |
3283 | /* There was a breakpoint, stop but don't print. */ |
3284 | bp_silent, | |
c906108c | 3285 | |
c5aa993b JM |
3286 | /* There was a breakpoint, stop and print. */ |
3287 | bp_noisy, | |
c906108c | 3288 | |
c5aa993b JM |
3289 | /* We hit the longjmp breakpoint. */ |
3290 | long_jump, | |
c906108c | 3291 | |
c5aa993b JM |
3292 | /* We hit the longjmp_resume breakpoint. */ |
3293 | long_resume, | |
c906108c | 3294 | |
c5aa993b JM |
3295 | /* We hit the step_resume breakpoint. */ |
3296 | step_resume, | |
c906108c | 3297 | |
c5aa993b JM |
3298 | /* We hit the shared library event breakpoint. */ |
3299 | shlib_event, | |
c906108c | 3300 | |
c5aa993b JM |
3301 | /* This is just used to count how many enums there are. */ |
3302 | class_last | |
c906108c SS |
3303 | }; |
3304 | ||
3305 | /* Here is the table which drives this routine. So that we can | |
3306 | format it pretty, we define some abbreviations for the | |
3307 | enum bpstat_what codes. */ | |
3308 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
3309 | #define ss BPSTAT_WHAT_STOP_SILENT | |
3310 | #define sn BPSTAT_WHAT_STOP_NOISY | |
3311 | #define sgl BPSTAT_WHAT_SINGLE | |
3312 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
3313 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
c906108c | 3314 | #define sr BPSTAT_WHAT_STEP_RESUME |
c906108c | 3315 | #define shl BPSTAT_WHAT_CHECK_SHLIBS |
c906108c SS |
3316 | |
3317 | /* "Can't happen." Might want to print an error message. | |
3318 | abort() is not out of the question, but chances are GDB is just | |
3319 | a bit confused, not unusable. */ | |
3320 | #define err BPSTAT_WHAT_STOP_NOISY | |
3321 | ||
3322 | /* Given an old action and a class, come up with a new action. */ | |
3323 | /* One interesting property of this table is that wp_silent is the same | |
3324 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
3325 | after stopping, the check for whether to step over a breakpoint | |
3326 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
3327 | reference to how we stopped. We retain separate wp_silent and |
3328 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
3329 | |
3330 | Another possibly interesting property of this table is that | |
3331 | there's a partial ordering, priority-like, of the actions. Once | |
3332 | you've decided that some action is appropriate, you'll never go | |
3333 | back and decide something of a lower priority is better. The | |
3334 | ordering is: | |
3335 | ||
d81191fc JB |
3336 | kc < clr sgl shl slr sn sr ss |
3337 | sgl < shl slr sn sr ss | |
3338 | slr < err shl sn sr ss | |
3339 | clr < err shl sn sr ss | |
3340 | ss < shl sn sr | |
3341 | sn < shl sr | |
3342 | shl < sr | |
4d5b2cd7 | 3343 | sr < |
c5aa993b | 3344 | |
43ff13b4 JM |
3345 | What I think this means is that we don't need a damned table |
3346 | here. If you just put the rows and columns in the right order, | |
3347 | it'd look awfully regular. We could simply walk the bpstat list | |
3348 | and choose the highest priority action we find, with a little | |
78b6a731 | 3349 | logic to handle the 'err' cases. */ |
c906108c SS |
3350 | |
3351 | /* step_resume entries: a step resume breakpoint overrides another | |
3352 | breakpoint of signal handling (see comment in wait_for_inferior | |
fcf70625 | 3353 | at where we set the step_resume breakpoint). */ |
c906108c SS |
3354 | |
3355 | static const enum bpstat_what_main_action | |
c5aa993b JM |
3356 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
3357 | { | |
3358 | /* old action */ | |
d81191fc | 3359 | /* kc ss sn sgl slr clr sr shl |
c5aa993b JM |
3360 | */ |
3361 | /*no_effect */ | |
d81191fc | 3362 | {kc, ss, sn, sgl, slr, clr, sr, shl}, |
c5aa993b | 3363 | /*wp_silent */ |
d81191fc | 3364 | {ss, ss, sn, ss, ss, ss, sr, shl}, |
c5aa993b | 3365 | /*wp_noisy */ |
d81191fc | 3366 | {sn, sn, sn, sn, sn, sn, sr, shl}, |
c5aa993b | 3367 | /*bp_nostop */ |
d81191fc | 3368 | {sgl, ss, sn, sgl, slr, slr, sr, shl}, |
c5aa993b | 3369 | /*bp_silent */ |
d81191fc | 3370 | {ss, ss, sn, ss, ss, ss, sr, shl}, |
c5aa993b | 3371 | /*bp_noisy */ |
d81191fc | 3372 | {sn, sn, sn, sn, sn, sn, sr, shl}, |
c5aa993b | 3373 | /*long_jump */ |
d81191fc | 3374 | {slr, ss, sn, slr, slr, err, sr, shl}, |
c5aa993b | 3375 | /*long_resume */ |
d81191fc | 3376 | {clr, ss, sn, err, err, err, sr, shl}, |
c5aa993b | 3377 | /*step_resume */ |
d81191fc | 3378 | {sr, sr, sr, sr, sr, sr, sr, sr}, |
c5aa993b | 3379 | /*shlib */ |
d81191fc | 3380 | {shl, shl, shl, shl, shl, shl, sr, shl} |
c5aa993b | 3381 | }; |
c906108c SS |
3382 | |
3383 | #undef kc | |
3384 | #undef ss | |
3385 | #undef sn | |
3386 | #undef sgl | |
3387 | #undef slr | |
3388 | #undef clr | |
c906108c SS |
3389 | #undef err |
3390 | #undef sr | |
3391 | #undef ts | |
3392 | #undef shl | |
c906108c SS |
3393 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; |
3394 | struct bpstat_what retval; | |
3395 | ||
3396 | retval.call_dummy = 0; | |
3397 | for (; bs != NULL; bs = bs->next) | |
3398 | { | |
3399 | enum class bs_class = no_effect; | |
3400 | if (bs->breakpoint_at == NULL) | |
3401 | /* I suspect this can happen if it was a momentary breakpoint | |
3402 | which has since been deleted. */ | |
3403 | continue; | |
20874c92 VP |
3404 | if (bs->breakpoint_at->owner == NULL) |
3405 | bs_class = bp_nostop; | |
3406 | else | |
4f8d1dc6 | 3407 | switch (bs->breakpoint_at->owner->type) |
c906108c SS |
3408 | { |
3409 | case bp_none: | |
3410 | continue; | |
3411 | ||
3412 | case bp_breakpoint: | |
3413 | case bp_hardware_breakpoint: | |
3414 | case bp_until: | |
3415 | case bp_finish: | |
3416 | if (bs->stop) | |
3417 | { | |
3418 | if (bs->print) | |
3419 | bs_class = bp_noisy; | |
3420 | else | |
3421 | bs_class = bp_silent; | |
3422 | } | |
3423 | else | |
3424 | bs_class = bp_nostop; | |
3425 | break; | |
3426 | case bp_watchpoint: | |
3427 | case bp_hardware_watchpoint: | |
3428 | case bp_read_watchpoint: | |
3429 | case bp_access_watchpoint: | |
3430 | if (bs->stop) | |
3431 | { | |
3432 | if (bs->print) | |
3433 | bs_class = wp_noisy; | |
3434 | else | |
3435 | bs_class = wp_silent; | |
3436 | } | |
3437 | else | |
53a5351d JM |
3438 | /* There was a watchpoint, but we're not stopping. |
3439 | This requires no further action. */ | |
c906108c SS |
3440 | bs_class = no_effect; |
3441 | break; | |
3442 | case bp_longjmp: | |
3443 | bs_class = long_jump; | |
3444 | break; | |
3445 | case bp_longjmp_resume: | |
3446 | bs_class = long_resume; | |
3447 | break; | |
3448 | case bp_step_resume: | |
3449 | if (bs->stop) | |
3450 | { | |
3451 | bs_class = step_resume; | |
3452 | } | |
3453 | else | |
3454 | /* It is for the wrong frame. */ | |
3455 | bs_class = bp_nostop; | |
3456 | break; | |
c906108c SS |
3457 | case bp_watchpoint_scope: |
3458 | bs_class = bp_nostop; | |
3459 | break; | |
c5aa993b JM |
3460 | case bp_shlib_event: |
3461 | bs_class = shlib_event; | |
3462 | break; | |
c4093a6a | 3463 | case bp_thread_event: |
1900040c | 3464 | case bp_overlay_event: |
0fd8e87f | 3465 | case bp_longjmp_master: |
c4093a6a JM |
3466 | bs_class = bp_nostop; |
3467 | break; | |
ce78b96d | 3468 | case bp_catchpoint: |
c5aa993b JM |
3469 | if (bs->stop) |
3470 | { | |
3471 | if (bs->print) | |
3472 | bs_class = bp_noisy; | |
3473 | else | |
3474 | bs_class = bp_silent; | |
3475 | } | |
3476 | else | |
53a5351d JM |
3477 | /* There was a catchpoint, but we're not stopping. |
3478 | This requires no further action. */ | |
c5aa993b JM |
3479 | bs_class = no_effect; |
3480 | break; | |
c906108c | 3481 | case bp_call_dummy: |
53a5351d JM |
3482 | /* Make sure the action is stop (silent or noisy), |
3483 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
3484 | bs_class = bp_silent; |
3485 | retval.call_dummy = 1; | |
3486 | break; | |
1042e4c0 SS |
3487 | case bp_tracepoint: |
3488 | /* Tracepoint hits should not be reported back to GDB, and | |
3489 | if one got through somehow, it should have been filtered | |
3490 | out already. */ | |
3491 | internal_error (__FILE__, __LINE__, | |
3492 | _("bpstat_what: bp_tracepoint encountered")); | |
3493 | break; | |
c906108c | 3494 | } |
c5aa993b | 3495 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
3496 | } |
3497 | retval.main_action = current_action; | |
3498 | return retval; | |
3499 | } | |
3500 | ||
3501 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
3502 | without hardware support). This isn't related to a specific bpstat, | |
3503 | just to things like whether watchpoints are set. */ | |
3504 | ||
c5aa993b | 3505 | int |
fba45db2 | 3506 | bpstat_should_step (void) |
c906108c SS |
3507 | { |
3508 | struct breakpoint *b; | |
3509 | ALL_BREAKPOINTS (b) | |
717a8278 | 3510 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 3511 | return 1; |
c906108c SS |
3512 | return 0; |
3513 | } | |
3514 | ||
c906108c | 3515 | \f |
c5aa993b | 3516 | |
0d381245 VP |
3517 | static void print_breakpoint_location (struct breakpoint *b, |
3518 | struct bp_location *loc, | |
3519 | char *wrap_indent, | |
3520 | struct ui_stream *stb) | |
3521 | { | |
3522 | if (b->source_file) | |
3523 | { | |
3524 | struct symbol *sym | |
3525 | = find_pc_sect_function (loc->address, loc->section); | |
3526 | if (sym) | |
3527 | { | |
3528 | ui_out_text (uiout, "in "); | |
3529 | ui_out_field_string (uiout, "func", | |
3530 | SYMBOL_PRINT_NAME (sym)); | |
3531 | ui_out_wrap_hint (uiout, wrap_indent); | |
3532 | ui_out_text (uiout, " at "); | |
3533 | } | |
3534 | ui_out_field_string (uiout, "file", b->source_file); | |
3535 | ui_out_text (uiout, ":"); | |
3536 | ||
3537 | if (ui_out_is_mi_like_p (uiout)) | |
3538 | { | |
3539 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
3540 | char *fullname = symtab_to_fullname (sal.symtab); | |
3541 | ||
3542 | if (fullname) | |
3543 | ui_out_field_string (uiout, "fullname", fullname); | |
3544 | } | |
3545 | ||
3546 | ui_out_field_int (uiout, "line", b->line_number); | |
3547 | } | |
3548 | else if (!b->loc) | |
3549 | { | |
3550 | ui_out_field_string (uiout, "pending", b->addr_string); | |
3551 | } | |
3552 | else | |
3553 | { | |
3554 | print_address_symbolic (loc->address, stb->stream, demangle, ""); | |
3555 | ui_out_field_stream (uiout, "at", stb); | |
3556 | } | |
3557 | } | |
3558 | ||
c4093a6a | 3559 | /* Print B to gdb_stdout. */ |
c906108c | 3560 | static void |
0d381245 VP |
3561 | print_one_breakpoint_location (struct breakpoint *b, |
3562 | struct bp_location *loc, | |
3563 | int loc_number, | |
a6d9a66e UW |
3564 | struct bp_location **last_loc, |
3565 | int print_address_bits) | |
c906108c | 3566 | { |
52f0bd74 AC |
3567 | struct command_line *l; |
3568 | struct symbol *sym; | |
c4093a6a JM |
3569 | struct ep_type_description |
3570 | { | |
3571 | enum bptype type; | |
3572 | char *description; | |
3573 | }; | |
3574 | static struct ep_type_description bptypes[] = | |
c906108c | 3575 | { |
c5aa993b JM |
3576 | {bp_none, "?deleted?"}, |
3577 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3578 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3579 | {bp_until, "until"}, |
3580 | {bp_finish, "finish"}, | |
3581 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3582 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3583 | {bp_read_watchpoint, "read watchpoint"}, |
3584 | {bp_access_watchpoint, "acc watchpoint"}, | |
3585 | {bp_longjmp, "longjmp"}, | |
3586 | {bp_longjmp_resume, "longjmp resume"}, | |
3587 | {bp_step_resume, "step resume"}, | |
c5aa993b JM |
3588 | {bp_watchpoint_scope, "watchpoint scope"}, |
3589 | {bp_call_dummy, "call dummy"}, | |
3590 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3591 | {bp_thread_event, "thread events"}, |
1900040c | 3592 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 3593 | {bp_longjmp_master, "longjmp master"}, |
ce78b96d | 3594 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 3595 | {bp_tracepoint, "tracepoint"}, |
c5aa993b | 3596 | }; |
c4093a6a | 3597 | |
c2c6d25f | 3598 | static char bpenables[] = "nynny"; |
c906108c | 3599 | char wrap_indent[80]; |
8b93c638 JM |
3600 | struct ui_stream *stb = ui_out_stream_new (uiout); |
3601 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 3602 | struct cleanup *bkpt_chain; |
c906108c | 3603 | |
0d381245 VP |
3604 | int header_of_multiple = 0; |
3605 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
3606 | struct value_print_options opts; |
3607 | ||
3608 | get_user_print_options (&opts); | |
0d381245 VP |
3609 | |
3610 | gdb_assert (!loc || loc_number != 0); | |
3611 | /* See comment in print_one_breakpoint concerning | |
3612 | treatment of breakpoints with single disabled | |
3613 | location. */ | |
3614 | if (loc == NULL | |
3615 | && (b->loc != NULL | |
3616 | && (b->loc->next != NULL || !b->loc->enabled))) | |
3617 | header_of_multiple = 1; | |
3618 | if (loc == NULL) | |
3619 | loc = b->loc; | |
3620 | ||
c4093a6a | 3621 | annotate_record (); |
3b31d625 | 3622 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
3623 | |
3624 | /* 1 */ | |
3625 | annotate_field (0); | |
0d381245 VP |
3626 | if (part_of_multiple) |
3627 | { | |
3628 | char *formatted; | |
0c6773c1 | 3629 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
3630 | ui_out_field_string (uiout, "number", formatted); |
3631 | xfree (formatted); | |
3632 | } | |
3633 | else | |
3634 | { | |
3635 | ui_out_field_int (uiout, "number", b->number); | |
3636 | } | |
c4093a6a JM |
3637 | |
3638 | /* 2 */ | |
3639 | annotate_field (1); | |
0d381245 VP |
3640 | if (part_of_multiple) |
3641 | ui_out_field_skip (uiout, "type"); | |
3642 | else | |
3643 | { | |
3644 | if (((int) b->type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3645 | || ((int) b->type != bptypes[(int) b->type].type)) | |
3646 | internal_error (__FILE__, __LINE__, | |
3647 | _("bptypes table does not describe type #%d."), | |
3648 | (int) b->type); | |
3649 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); | |
3650 | } | |
c4093a6a JM |
3651 | |
3652 | /* 3 */ | |
3653 | annotate_field (2); | |
0d381245 VP |
3654 | if (part_of_multiple) |
3655 | ui_out_field_skip (uiout, "disp"); | |
3656 | else | |
2cec12e5 | 3657 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 3658 | |
c4093a6a JM |
3659 | |
3660 | /* 4 */ | |
3661 | annotate_field (3); | |
0d381245 | 3662 | if (part_of_multiple) |
54e52265 | 3663 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 3664 | else |
54e52265 VP |
3665 | ui_out_field_fmt (uiout, "enabled", "%c", |
3666 | bpenables[(int) b->enable_state]); | |
3667 | ui_out_spaces (uiout, 2); | |
0d381245 | 3668 | |
c4093a6a JM |
3669 | |
3670 | /* 5 and 6 */ | |
3671 | strcpy (wrap_indent, " "); | |
79a45b7d | 3672 | if (opts.addressprint) |
75ac9d7b | 3673 | { |
a6d9a66e | 3674 | if (print_address_bits <= 32) |
75ac9d7b MS |
3675 | strcat (wrap_indent, " "); |
3676 | else | |
3677 | strcat (wrap_indent, " "); | |
3678 | } | |
c906108c | 3679 | |
3086aeae | 3680 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 VP |
3681 | { |
3682 | /* Although the print_one can possibly print | |
3683 | all locations, calling it here is not likely | |
3684 | to get any nice result. So, make sure there's | |
3685 | just one location. */ | |
3686 | gdb_assert (b->loc == NULL || b->loc->next == NULL); | |
a6d9a66e | 3687 | b->ops->print_one (b, last_loc); |
0d381245 | 3688 | } |
3086aeae DJ |
3689 | else |
3690 | switch (b->type) | |
3691 | { | |
3692 | case bp_none: | |
3693 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 3694 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 3695 | break; |
c906108c | 3696 | |
3086aeae DJ |
3697 | case bp_watchpoint: |
3698 | case bp_hardware_watchpoint: | |
3699 | case bp_read_watchpoint: | |
3700 | case bp_access_watchpoint: | |
3701 | /* Field 4, the address, is omitted (which makes the columns | |
3702 | not line up too nicely with the headers, but the effect | |
3703 | is relatively readable). */ | |
79a45b7d | 3704 | if (opts.addressprint) |
3086aeae DJ |
3705 | ui_out_field_skip (uiout, "addr"); |
3706 | annotate_field (5); | |
fa8a61dc | 3707 | ui_out_field_string (uiout, "what", b->exp_string); |
3086aeae DJ |
3708 | break; |
3709 | ||
3086aeae DJ |
3710 | case bp_breakpoint: |
3711 | case bp_hardware_breakpoint: | |
3712 | case bp_until: | |
3713 | case bp_finish: | |
3714 | case bp_longjmp: | |
3715 | case bp_longjmp_resume: | |
3716 | case bp_step_resume: | |
3086aeae DJ |
3717 | case bp_watchpoint_scope: |
3718 | case bp_call_dummy: | |
3719 | case bp_shlib_event: | |
3720 | case bp_thread_event: | |
3721 | case bp_overlay_event: | |
0fd8e87f | 3722 | case bp_longjmp_master: |
1042e4c0 | 3723 | case bp_tracepoint: |
79a45b7d | 3724 | if (opts.addressprint) |
3086aeae DJ |
3725 | { |
3726 | annotate_field (4); | |
54e52265 | 3727 | if (header_of_multiple) |
0d381245 | 3728 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 3729 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 3730 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 3731 | else |
5af949e3 UW |
3732 | ui_out_field_core_addr (uiout, "addr", |
3733 | loc->gdbarch, loc->address); | |
3086aeae DJ |
3734 | } |
3735 | annotate_field (5); | |
0d381245 VP |
3736 | if (!header_of_multiple) |
3737 | print_breakpoint_location (b, loc, wrap_indent, stb); | |
3738 | if (b->loc) | |
a6d9a66e | 3739 | *last_loc = b->loc; |
3086aeae DJ |
3740 | break; |
3741 | } | |
c906108c | 3742 | |
4a306c9a | 3743 | if (!part_of_multiple) |
c4093a6a | 3744 | { |
4a306c9a JB |
3745 | if (b->thread != -1) |
3746 | { | |
3747 | /* FIXME: This seems to be redundant and lost here; see the | |
3748 | "stop only in" line a little further down. */ | |
3749 | ui_out_text (uiout, " thread "); | |
3750 | ui_out_field_int (uiout, "thread", b->thread); | |
3751 | } | |
3752 | else if (b->task != 0) | |
3753 | { | |
3754 | ui_out_text (uiout, " task "); | |
3755 | ui_out_field_int (uiout, "task", b->task); | |
3756 | } | |
c4093a6a JM |
3757 | } |
3758 | ||
8b93c638 | 3759 | ui_out_text (uiout, "\n"); |
c4093a6a | 3760 | |
0d381245 | 3761 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
3762 | { |
3763 | annotate_field (6); | |
8b93c638 | 3764 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
3765 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
3766 | the frame ID. */ | |
5af949e3 UW |
3767 | ui_out_field_core_addr (uiout, "frame", |
3768 | b->gdbarch, b->frame_id.stack_addr); | |
8b93c638 | 3769 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
3770 | } |
3771 | ||
0d381245 | 3772 | if (!part_of_multiple && b->cond_string && !ada_exception_catchpoint_p (b)) |
c4093a6a | 3773 | { |
f7f9143b JB |
3774 | /* We do not print the condition for Ada exception catchpoints |
3775 | because the condition is an internal implementation detail | |
3776 | that we do not want to expose to the user. */ | |
c4093a6a | 3777 | annotate_field (7); |
1042e4c0 SS |
3778 | if (b->type == bp_tracepoint) |
3779 | ui_out_text (uiout, "\ttrace only if "); | |
3780 | else | |
3781 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 JJ |
3782 | ui_out_field_string (uiout, "cond", b->cond_string); |
3783 | ui_out_text (uiout, "\n"); | |
3784 | } | |
3785 | ||
0d381245 | 3786 | if (!part_of_multiple && b->thread != -1) |
c4093a6a JM |
3787 | { |
3788 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3789 | ui_out_text (uiout, "\tstop only in thread "); |
3790 | ui_out_field_int (uiout, "thread", b->thread); | |
3791 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3792 | } |
3793 | ||
63c715c6 | 3794 | if (!part_of_multiple && b->hit_count) |
c4093a6a JM |
3795 | { |
3796 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3797 | if (ep_is_catchpoint (b)) |
3798 | ui_out_text (uiout, "\tcatchpoint"); | |
3799 | else | |
3800 | ui_out_text (uiout, "\tbreakpoint"); | |
3801 | ui_out_text (uiout, " already hit "); | |
3802 | ui_out_field_int (uiout, "times", b->hit_count); | |
3803 | if (b->hit_count == 1) | |
3804 | ui_out_text (uiout, " time\n"); | |
3805 | else | |
3806 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
3807 | } |
3808 | ||
fb40c209 AC |
3809 | /* Output the count also if it is zero, but only if this is |
3810 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 3811 | if (ui_out_is_mi_like_p (uiout)) |
63c715c6 | 3812 | if (!part_of_multiple && b->hit_count == 0) |
fb40c209 | 3813 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 3814 | |
0d381245 | 3815 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
3816 | { |
3817 | annotate_field (8); | |
8b93c638 JM |
3818 | ui_out_text (uiout, "\tignore next "); |
3819 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3820 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 3821 | } |
059fb39f PM |
3822 | |
3823 | l = b->commands; | |
3824 | if (!part_of_multiple && l) | |
c4093a6a | 3825 | { |
3b31d625 EZ |
3826 | struct cleanup *script_chain; |
3827 | ||
c4093a6a | 3828 | annotate_field (9); |
3b31d625 | 3829 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 3830 | print_command_lines (uiout, l, 4); |
3b31d625 | 3831 | do_cleanups (script_chain); |
c4093a6a | 3832 | } |
d24317b4 | 3833 | |
1042e4c0 SS |
3834 | if (!part_of_multiple && b->pass_count) |
3835 | { | |
3836 | annotate_field (10); | |
3837 | ui_out_text (uiout, "\tpass count "); | |
3838 | ui_out_field_int (uiout, "pass", b->pass_count); | |
3839 | ui_out_text (uiout, " \n"); | |
3840 | } | |
3841 | ||
3842 | if (!part_of_multiple && b->step_count) | |
3843 | { | |
3844 | annotate_field (11); | |
3845 | ui_out_text (uiout, "\tstep count "); | |
3846 | ui_out_field_int (uiout, "step", b->step_count); | |
3847 | ui_out_text (uiout, " \n"); | |
3848 | } | |
3849 | ||
3850 | if (!part_of_multiple && b->actions) | |
3851 | { | |
3852 | struct action_line *action; | |
3853 | annotate_field (12); | |
3854 | for (action = b->actions; action; action = action->next) | |
3855 | { | |
3856 | ui_out_text (uiout, " A\t"); | |
3857 | ui_out_text (uiout, action->action); | |
3858 | ui_out_text (uiout, "\n"); | |
3859 | } | |
3860 | } | |
3861 | ||
d24317b4 VP |
3862 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
3863 | { | |
3864 | if (b->addr_string) | |
3865 | ui_out_field_string (uiout, "original-location", b->addr_string); | |
3866 | else if (b->exp_string) | |
3867 | ui_out_field_string (uiout, "original-location", b->exp_string); | |
3868 | } | |
3869 | ||
3b31d625 | 3870 | do_cleanups (bkpt_chain); |
8b93c638 | 3871 | do_cleanups (old_chain); |
c4093a6a | 3872 | } |
c5aa993b | 3873 | |
0d381245 VP |
3874 | static void |
3875 | print_one_breakpoint (struct breakpoint *b, | |
a6d9a66e | 3876 | struct bp_location **last_loc, int print_address_bits) |
0d381245 | 3877 | { |
a6d9a66e | 3878 | print_one_breakpoint_location (b, NULL, 0, last_loc, print_address_bits); |
0d381245 VP |
3879 | |
3880 | /* If this breakpoint has custom print function, | |
3881 | it's already printed. Otherwise, print individual | |
3882 | locations, if any. */ | |
3883 | if (b->ops == NULL || b->ops->print_one == NULL) | |
3884 | { | |
3885 | /* If breakpoint has a single location that is | |
3886 | disabled, we print it as if it had | |
3887 | several locations, since otherwise it's hard to | |
3888 | represent "breakpoint enabled, location disabled" | |
a5606eee VP |
3889 | situation. |
3890 | Note that while hardware watchpoints have | |
3891 | several locations internally, that's no a property | |
3892 | exposed to user. */ | |
0d381245 | 3893 | if (b->loc |
a5606eee | 3894 | && !is_hardware_watchpoint (b) |
0d381245 | 3895 | && (b->loc->next || !b->loc->enabled) |
a5606eee | 3896 | && !ui_out_is_mi_like_p (uiout)) |
0d381245 VP |
3897 | { |
3898 | struct bp_location *loc; | |
3899 | int n = 1; | |
3900 | for (loc = b->loc; loc; loc = loc->next, ++n) | |
a6d9a66e UW |
3901 | print_one_breakpoint_location (b, loc, n, last_loc, |
3902 | print_address_bits); | |
0d381245 VP |
3903 | } |
3904 | } | |
3905 | } | |
3906 | ||
a6d9a66e UW |
3907 | static int |
3908 | breakpoint_address_bits (struct breakpoint *b) | |
3909 | { | |
3910 | int print_address_bits = 0; | |
3911 | struct bp_location *loc; | |
3912 | ||
3913 | for (loc = b->loc; loc; loc = loc->next) | |
3914 | { | |
3915 | int addr_bit = gdbarch_addr_bit (b->gdbarch); | |
3916 | if (addr_bit > print_address_bits) | |
3917 | print_address_bits = addr_bit; | |
3918 | } | |
3919 | ||
3920 | return print_address_bits; | |
3921 | } | |
0d381245 | 3922 | |
c4093a6a JM |
3923 | struct captured_breakpoint_query_args |
3924 | { | |
3925 | int bnum; | |
3926 | }; | |
c5aa993b | 3927 | |
c4093a6a | 3928 | static int |
2b65245e | 3929 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
3930 | { |
3931 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 3932 | struct breakpoint *b; |
a6d9a66e | 3933 | struct bp_location *dummy_loc = NULL; |
c4093a6a JM |
3934 | ALL_BREAKPOINTS (b) |
3935 | { | |
3936 | if (args->bnum == b->number) | |
c5aa993b | 3937 | { |
a6d9a66e UW |
3938 | int print_address_bits = breakpoint_address_bits (b); |
3939 | print_one_breakpoint (b, &dummy_loc, print_address_bits); | |
c4093a6a | 3940 | return GDB_RC_OK; |
c5aa993b | 3941 | } |
c4093a6a JM |
3942 | } |
3943 | return GDB_RC_NONE; | |
3944 | } | |
c5aa993b | 3945 | |
c4093a6a | 3946 | enum gdb_rc |
ce43223b | 3947 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, char **error_message) |
c4093a6a JM |
3948 | { |
3949 | struct captured_breakpoint_query_args args; | |
3950 | args.bnum = bnum; | |
3951 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3952 | an error. */ | |
b0b13bb4 DJ |
3953 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
3954 | error_message, RETURN_MASK_ALL) < 0) | |
3955 | return GDB_RC_FAIL; | |
3956 | else | |
3957 | return GDB_RC_OK; | |
c4093a6a | 3958 | } |
c5aa993b | 3959 | |
7f3b0473 AC |
3960 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
3961 | catchpoints, et.al.). */ | |
3962 | ||
3963 | static int | |
3964 | user_settable_breakpoint (const struct breakpoint *b) | |
3965 | { | |
3966 | return (b->type == bp_breakpoint | |
ce78b96d | 3967 | || b->type == bp_catchpoint |
7f3b0473 | 3968 | || b->type == bp_hardware_breakpoint |
1042e4c0 | 3969 | || b->type == bp_tracepoint |
7f3b0473 AC |
3970 | || b->type == bp_watchpoint |
3971 | || b->type == bp_read_watchpoint | |
3972 | || b->type == bp_access_watchpoint | |
3973 | || b->type == bp_hardware_watchpoint); | |
3974 | } | |
3975 | ||
3976 | /* Print information on user settable breakpoint (watchpoint, etc) | |
3977 | number BNUM. If BNUM is -1 print all user settable breakpoints. | |
3978 | If ALLFLAG is non-zero, include non- user settable breakpoints. */ | |
c906108c | 3979 | |
c4093a6a | 3980 | static void |
fba45db2 | 3981 | breakpoint_1 (int bnum, int allflag) |
c4093a6a | 3982 | { |
52f0bd74 | 3983 | struct breakpoint *b; |
a6d9a66e | 3984 | struct bp_location *last_loc = NULL; |
7f3b0473 | 3985 | int nr_printable_breakpoints; |
3b31d625 | 3986 | struct cleanup *bkpttbl_chain; |
79a45b7d | 3987 | struct value_print_options opts; |
a6d9a66e | 3988 | int print_address_bits = 0; |
c4093a6a | 3989 | |
79a45b7d TT |
3990 | get_user_print_options (&opts); |
3991 | ||
a6d9a66e UW |
3992 | /* Compute the number of rows in the table, as well as the |
3993 | size required for address fields. */ | |
7f3b0473 AC |
3994 | nr_printable_breakpoints = 0; |
3995 | ALL_BREAKPOINTS (b) | |
3996 | if (bnum == -1 | |
3997 | || bnum == b->number) | |
3998 | { | |
3999 | if (allflag || user_settable_breakpoint (b)) | |
a6d9a66e UW |
4000 | { |
4001 | int addr_bit = breakpoint_address_bits (b); | |
4002 | if (addr_bit > print_address_bits) | |
4003 | print_address_bits = addr_bit; | |
4004 | ||
4005 | nr_printable_breakpoints++; | |
4006 | } | |
7f3b0473 AC |
4007 | } |
4008 | ||
79a45b7d | 4009 | if (opts.addressprint) |
3b31d625 EZ |
4010 | bkpttbl_chain |
4011 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
4012 | "BreakpointTable"); | |
8b93c638 | 4013 | else |
3b31d625 EZ |
4014 | bkpttbl_chain |
4015 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
4016 | "BreakpointTable"); | |
8b93c638 | 4017 | |
7f3b0473 | 4018 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
4019 | annotate_breakpoints_headers (); |
4020 | if (nr_printable_breakpoints > 0) | |
4021 | annotate_field (0); | |
0d381245 | 4022 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
4023 | if (nr_printable_breakpoints > 0) |
4024 | annotate_field (1); | |
4025 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
4026 | if (nr_printable_breakpoints > 0) | |
4027 | annotate_field (2); | |
4028 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
4029 | if (nr_printable_breakpoints > 0) | |
4030 | annotate_field (3); | |
54e52265 | 4031 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 4032 | if (opts.addressprint) |
7f3b0473 | 4033 | { |
d7faa9e7 AC |
4034 | if (nr_printable_breakpoints > 0) |
4035 | annotate_field (4); | |
a6d9a66e | 4036 | if (print_address_bits <= 32) |
b25959ec | 4037 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 4038 | else |
b25959ec | 4039 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 4040 | } |
d7faa9e7 AC |
4041 | if (nr_printable_breakpoints > 0) |
4042 | annotate_field (5); | |
4043 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
4044 | ui_out_table_body (uiout); | |
4045 | if (nr_printable_breakpoints > 0) | |
4046 | annotate_breakpoints_table (); | |
7f3b0473 | 4047 | |
c4093a6a JM |
4048 | ALL_BREAKPOINTS (b) |
4049 | if (bnum == -1 | |
4050 | || bnum == b->number) | |
4051 | { | |
4052 | /* We only print out user settable breakpoints unless the | |
4053 | allflag is set. */ | |
7f3b0473 | 4054 | if (allflag || user_settable_breakpoint (b)) |
a6d9a66e | 4055 | print_one_breakpoint (b, &last_loc, print_address_bits); |
c4093a6a JM |
4056 | } |
4057 | ||
3b31d625 | 4058 | do_cleanups (bkpttbl_chain); |
698384cd | 4059 | |
7f3b0473 | 4060 | if (nr_printable_breakpoints == 0) |
c906108c | 4061 | { |
8b93c638 JM |
4062 | if (bnum == -1) |
4063 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
4064 | else | |
4065 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
4066 | bnum); | |
c906108c SS |
4067 | } |
4068 | else | |
c4093a6a | 4069 | { |
a6d9a66e UW |
4070 | if (last_loc && !server_command) |
4071 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 4072 | } |
c906108c | 4073 | |
c4093a6a JM |
4074 | /* FIXME? Should this be moved up so that it is only called when |
4075 | there have been breakpoints? */ | |
c906108c SS |
4076 | annotate_breakpoints_table_end (); |
4077 | } | |
4078 | ||
c906108c | 4079 | static void |
fba45db2 | 4080 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
4081 | { |
4082 | int bnum = -1; | |
4083 | ||
4084 | if (bnum_exp) | |
bb518678 | 4085 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
4086 | |
4087 | breakpoint_1 (bnum, 0); | |
4088 | } | |
4089 | ||
7a292a7a | 4090 | static void |
fba45db2 | 4091 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
4092 | { |
4093 | int bnum = -1; | |
4094 | ||
4095 | if (bnum_exp) | |
bb518678 | 4096 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
4097 | |
4098 | breakpoint_1 (bnum, 1); | |
4099 | } | |
4100 | ||
0d381245 | 4101 | static int |
714835d5 UW |
4102 | breakpoint_has_pc (struct breakpoint *b, |
4103 | CORE_ADDR pc, struct obj_section *section) | |
0d381245 VP |
4104 | { |
4105 | struct bp_location *bl = b->loc; | |
4106 | for (; bl; bl = bl->next) | |
4107 | { | |
4108 | if (bl->address == pc | |
4109 | && (!overlay_debugging || bl->section == section)) | |
4110 | return 1; | |
4111 | } | |
4112 | return 0; | |
4113 | } | |
4114 | ||
c906108c SS |
4115 | /* Print a message describing any breakpoints set at PC. */ |
4116 | ||
4117 | static void | |
5af949e3 UW |
4118 | describe_other_breakpoints (struct gdbarch *gdbarch, CORE_ADDR pc, |
4119 | struct obj_section *section, int thread) | |
c906108c | 4120 | { |
52f0bd74 AC |
4121 | int others = 0; |
4122 | struct breakpoint *b; | |
c906108c SS |
4123 | |
4124 | ALL_BREAKPOINTS (b) | |
0d381245 | 4125 | others += breakpoint_has_pc (b, pc, section); |
c906108c SS |
4126 | if (others > 0) |
4127 | { | |
a3f17187 AC |
4128 | if (others == 1) |
4129 | printf_filtered (_("Note: breakpoint ")); | |
4130 | else /* if (others == ???) */ | |
4131 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 4132 | ALL_BREAKPOINTS (b) |
0d381245 VP |
4133 | if (breakpoint_has_pc (b, pc, section)) |
4134 | { | |
4135 | others--; | |
4136 | printf_filtered ("%d", b->number); | |
4137 | if (b->thread == -1 && thread != -1) | |
4138 | printf_filtered (" (all threads)"); | |
4139 | else if (b->thread != -1) | |
4140 | printf_filtered (" (thread %d)", b->thread); | |
4141 | printf_filtered ("%s%s ", | |
059fb39f PM |
4142 | ((b->enable_state == bp_disabled |
4143 | || b->enable_state == bp_call_disabled) | |
0d381245 VP |
4144 | ? " (disabled)" |
4145 | : b->enable_state == bp_permanent | |
4146 | ? " (permanent)" | |
4147 | : ""), | |
4148 | (others > 1) ? "," | |
4149 | : ((others == 1) ? " and" : "")); | |
4150 | } | |
a3f17187 | 4151 | printf_filtered (_("also set at pc ")); |
5af949e3 | 4152 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
4153 | printf_filtered (".\n"); |
4154 | } | |
4155 | } | |
4156 | \f | |
4157 | /* Set the default place to put a breakpoint | |
4158 | for the `break' command with no arguments. */ | |
4159 | ||
4160 | void | |
fba45db2 KB |
4161 | set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, |
4162 | int line) | |
c906108c SS |
4163 | { |
4164 | default_breakpoint_valid = valid; | |
4165 | default_breakpoint_address = addr; | |
4166 | default_breakpoint_symtab = symtab; | |
4167 | default_breakpoint_line = line; | |
4168 | } | |
4169 | ||
e4f237da KB |
4170 | /* Return true iff it is meaningful to use the address member of |
4171 | BPT. For some breakpoint types, the address member is irrelevant | |
4172 | and it makes no sense to attempt to compare it to other addresses | |
4173 | (or use it for any other purpose either). | |
4174 | ||
4175 | More specifically, each of the following breakpoint types will always | |
4176 | have a zero valued address and we don't want check_duplicates() to mark | |
4177 | breakpoints of any of these types to be a duplicate of an actual | |
4178 | breakpoint at address zero: | |
4179 | ||
4180 | bp_watchpoint | |
4181 | bp_hardware_watchpoint | |
4182 | bp_read_watchpoint | |
4183 | bp_access_watchpoint | |
fe798b75 | 4184 | bp_catchpoint */ |
e4f237da KB |
4185 | |
4186 | static int | |
4187 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
4188 | { | |
4189 | enum bptype type = bpt->type; | |
4190 | ||
4191 | return (type != bp_watchpoint | |
4192 | && type != bp_hardware_watchpoint | |
4193 | && type != bp_read_watchpoint | |
4194 | && type != bp_access_watchpoint | |
fe798b75 | 4195 | && type != bp_catchpoint); |
e4f237da KB |
4196 | } |
4197 | ||
9f60f21b | 4198 | /* Rescan breakpoints at the same address and section as BPT, |
c906108c | 4199 | marking the first one as "first" and any others as "duplicates". |
c2c6d25f | 4200 | This is so that the bpt instruction is only inserted once. |
9f60f21b JB |
4201 | If we have a permanent breakpoint at the same place as BPT, make |
4202 | that one the official one, and the rest as duplicates. */ | |
c906108c SS |
4203 | |
4204 | static void | |
714835d5 | 4205 | check_duplicates_for (CORE_ADDR address, struct obj_section *section) |
c906108c | 4206 | { |
075f6582 | 4207 | struct bp_location *b; |
52f0bd74 | 4208 | int count = 0; |
075f6582 | 4209 | struct bp_location *perm_bp = 0; |
c906108c | 4210 | |
075f6582 DJ |
4211 | ALL_BP_LOCATIONS (b) |
4212 | if (b->owner->enable_state != bp_disabled | |
075f6582 | 4213 | && b->owner->enable_state != bp_call_disabled |
0d381245 VP |
4214 | && b->enabled |
4215 | && !b->shlib_disabled | |
075f6582 DJ |
4216 | && b->address == address /* address / overlay match */ |
4217 | && (!overlay_debugging || b->section == section) | |
4218 | && breakpoint_address_is_meaningful (b->owner)) | |
c5aa993b | 4219 | { |
c2c6d25f | 4220 | /* Have we found a permanent breakpoint? */ |
075f6582 | 4221 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
4222 | { |
4223 | perm_bp = b; | |
4224 | break; | |
4225 | } | |
4226 | ||
c5aa993b | 4227 | count++; |
075f6582 | 4228 | b->duplicate = count > 1; |
c5aa993b | 4229 | } |
c2c6d25f JM |
4230 | |
4231 | /* If we found a permanent breakpoint at this address, go over the | |
aae64587 PA |
4232 | list again and declare all the other breakpoints there (except |
4233 | other permanent breakpoints) to be the duplicates. */ | |
c2c6d25f JM |
4234 | if (perm_bp) |
4235 | { | |
075f6582 | 4236 | perm_bp->duplicate = 0; |
c2c6d25f JM |
4237 | |
4238 | /* Permanent breakpoint should always be inserted. */ | |
075f6582 | 4239 | if (! perm_bp->inserted) |
8e65ff28 | 4240 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 AC |
4241 | _("allegedly permanent breakpoint is not " |
4242 | "actually inserted")); | |
c2c6d25f | 4243 | |
075f6582 | 4244 | ALL_BP_LOCATIONS (b) |
c2c6d25f JM |
4245 | if (b != perm_bp) |
4246 | { | |
aae64587 PA |
4247 | if (b->owner->enable_state != bp_permanent |
4248 | && b->owner->enable_state != bp_disabled | |
075f6582 | 4249 | && b->owner->enable_state != bp_call_disabled |
0d381245 | 4250 | && b->enabled && !b->shlib_disabled |
075f6582 DJ |
4251 | && b->address == address /* address / overlay match */ |
4252 | && (!overlay_debugging || b->section == section) | |
4253 | && breakpoint_address_is_meaningful (b->owner)) | |
4254 | { | |
4255 | if (b->inserted) | |
4256 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 AC |
4257 | _("another breakpoint was inserted on top of " |
4258 | "a permanent breakpoint")); | |
075f6582 DJ |
4259 | |
4260 | b->duplicate = 1; | |
4261 | } | |
c2c6d25f JM |
4262 | } |
4263 | } | |
c906108c SS |
4264 | } |
4265 | ||
0d381245 VP |
4266 | static void |
4267 | check_duplicates (struct breakpoint *bpt) | |
4268 | { | |
4269 | struct bp_location *bl = bpt->loc; | |
4270 | ||
4271 | if (! breakpoint_address_is_meaningful (bpt)) | |
4272 | return; | |
4273 | ||
4274 | for (; bl; bl = bl->next) | |
4275 | check_duplicates_for (bl->address, bl->section); | |
4276 | } | |
4277 | ||
76897487 KB |
4278 | static void |
4279 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
4280 | int bnum, int have_bnum) | |
4281 | { | |
4282 | char astr1[40]; | |
4283 | char astr2[40]; | |
4284 | ||
bb599908 PH |
4285 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
4286 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 4287 | if (have_bnum) |
8a3fe4f8 | 4288 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
4289 | bnum, astr1, astr2); |
4290 | else | |
8a3fe4f8 | 4291 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
4292 | } |
4293 | ||
4294 | /* Adjust a breakpoint's address to account for architectural constraints | |
4295 | on breakpoint placement. Return the adjusted address. Note: Very | |
4296 | few targets require this kind of adjustment. For most targets, | |
4297 | this function is simply the identity function. */ | |
4298 | ||
4299 | static CORE_ADDR | |
a6d9a66e UW |
4300 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
4301 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 4302 | { |
a6d9a66e | 4303 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
4304 | { |
4305 | /* Very few targets need any kind of breakpoint adjustment. */ | |
4306 | return bpaddr; | |
4307 | } | |
88f7da05 KB |
4308 | else if (bptype == bp_watchpoint |
4309 | || bptype == bp_hardware_watchpoint | |
4310 | || bptype == bp_read_watchpoint | |
4311 | || bptype == bp_access_watchpoint | |
fe798b75 | 4312 | || bptype == bp_catchpoint) |
88f7da05 KB |
4313 | { |
4314 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
4315 | have their addresses modified. */ | |
4316 | return bpaddr; | |
4317 | } | |
76897487 KB |
4318 | else |
4319 | { | |
4320 | CORE_ADDR adjusted_bpaddr; | |
4321 | ||
4322 | /* Some targets have architectural constraints on the placement | |
4323 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 4324 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
4325 | |
4326 | /* An adjusted breakpoint address can significantly alter | |
4327 | a user's expectations. Print a warning if an adjustment | |
4328 | is required. */ | |
4329 | if (adjusted_bpaddr != bpaddr) | |
4330 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
4331 | ||
4332 | return adjusted_bpaddr; | |
4333 | } | |
4334 | } | |
4335 | ||
7cc221ef DJ |
4336 | /* Allocate a struct bp_location. */ |
4337 | ||
26bb91f3 | 4338 | static struct bp_location * |
39d61571 | 4339 | allocate_bp_location (struct breakpoint *bpt) |
7cc221ef DJ |
4340 | { |
4341 | struct bp_location *loc, *loc_p; | |
4342 | ||
4343 | loc = xmalloc (sizeof (struct bp_location)); | |
4344 | memset (loc, 0, sizeof (*loc)); | |
4345 | ||
e049a4b5 | 4346 | loc->owner = bpt; |
511a6cd4 | 4347 | loc->cond = NULL; |
0d381245 VP |
4348 | loc->shlib_disabled = 0; |
4349 | loc->enabled = 1; | |
e049a4b5 | 4350 | |
39d61571 | 4351 | switch (bpt->type) |
e049a4b5 DJ |
4352 | { |
4353 | case bp_breakpoint: | |
1042e4c0 | 4354 | case bp_tracepoint: |
e049a4b5 DJ |
4355 | case bp_until: |
4356 | case bp_finish: | |
4357 | case bp_longjmp: | |
4358 | case bp_longjmp_resume: | |
4359 | case bp_step_resume: | |
e049a4b5 DJ |
4360 | case bp_watchpoint_scope: |
4361 | case bp_call_dummy: | |
4362 | case bp_shlib_event: | |
4363 | case bp_thread_event: | |
4364 | case bp_overlay_event: | |
0fd8e87f | 4365 | case bp_longjmp_master: |
e049a4b5 DJ |
4366 | loc->loc_type = bp_loc_software_breakpoint; |
4367 | break; | |
4368 | case bp_hardware_breakpoint: | |
4369 | loc->loc_type = bp_loc_hardware_breakpoint; | |
4370 | break; | |
4371 | case bp_hardware_watchpoint: | |
4372 | case bp_read_watchpoint: | |
4373 | case bp_access_watchpoint: | |
4374 | loc->loc_type = bp_loc_hardware_watchpoint; | |
4375 | break; | |
4376 | case bp_watchpoint: | |
ce78b96d | 4377 | case bp_catchpoint: |
e049a4b5 DJ |
4378 | loc->loc_type = bp_loc_other; |
4379 | break; | |
4380 | default: | |
e2e0b3e5 | 4381 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
4382 | } |
4383 | ||
7cc221ef DJ |
4384 | return loc; |
4385 | } | |
4386 | ||
fe3f5fa8 VP |
4387 | static void free_bp_location (struct bp_location *loc) |
4388 | { | |
4389 | if (loc->cond) | |
4390 | xfree (loc->cond); | |
74960c60 VP |
4391 | |
4392 | if (loc->function_name) | |
4393 | xfree (loc->function_name); | |
4394 | ||
fe3f5fa8 VP |
4395 | xfree (loc); |
4396 | } | |
4397 | ||
0d381245 VP |
4398 | /* Helper to set_raw_breakpoint below. Creates a breakpoint |
4399 | that has type BPTYPE and has no locations as yet. */ | |
63c252f8 | 4400 | /* This function is used in gdbtk sources and thus can not be made static. */ |
c906108c | 4401 | |
c40e75cd | 4402 | static struct breakpoint * |
a6d9a66e UW |
4403 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, |
4404 | enum bptype bptype) | |
c906108c | 4405 | { |
52f0bd74 | 4406 | struct breakpoint *b, *b1; |
c906108c SS |
4407 | |
4408 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4409 | memset (b, 0, sizeof (*b)); | |
2219d63c | 4410 | |
4d28f7a8 | 4411 | b->type = bptype; |
a6d9a66e | 4412 | b->gdbarch = gdbarch; |
c906108c SS |
4413 | b->language = current_language->la_language; |
4414 | b->input_radix = input_radix; | |
4415 | b->thread = -1; | |
b5de0fa7 | 4416 | b->enable_state = bp_enabled; |
c906108c SS |
4417 | b->next = 0; |
4418 | b->silent = 0; | |
4419 | b->ignore_count = 0; | |
4420 | b->commands = NULL; | |
818dd999 | 4421 | b->frame_id = null_frame_id; |
3a3e9ee3 | 4422 | b->forked_inferior_pid = null_ptid; |
c906108c | 4423 | b->exec_pathname = NULL; |
3086aeae | 4424 | b->ops = NULL; |
0d381245 | 4425 | b->condition_not_parsed = 0; |
c906108c SS |
4426 | |
4427 | /* Add this breakpoint to the end of the chain | |
4428 | so that a list of breakpoints will come out in order | |
4429 | of increasing numbers. */ | |
4430 | ||
4431 | b1 = breakpoint_chain; | |
4432 | if (b1 == 0) | |
4433 | breakpoint_chain = b; | |
4434 | else | |
4435 | { | |
4436 | while (b1->next) | |
4437 | b1 = b1->next; | |
4438 | b1->next = b; | |
4439 | } | |
0d381245 VP |
4440 | return b; |
4441 | } | |
4442 | ||
4443 | /* Initialize loc->function_name. */ | |
4444 | static void | |
4445 | set_breakpoint_location_function (struct bp_location *loc) | |
4446 | { | |
4447 | if (loc->owner->type == bp_breakpoint | |
1042e4c0 SS |
4448 | || loc->owner->type == bp_hardware_breakpoint |
4449 | || loc->owner->type == bp_tracepoint) | |
0d381245 VP |
4450 | { |
4451 | find_pc_partial_function (loc->address, &(loc->function_name), | |
4452 | NULL, NULL); | |
4453 | if (loc->function_name) | |
4454 | loc->function_name = xstrdup (loc->function_name); | |
4455 | } | |
4456 | } | |
4457 | ||
a6d9a66e UW |
4458 | /* Attempt to determine architecture of location identified by SAL. */ |
4459 | static struct gdbarch * | |
4460 | get_sal_arch (struct symtab_and_line sal) | |
4461 | { | |
4462 | if (sal.section) | |
4463 | return get_objfile_arch (sal.section->objfile); | |
4464 | if (sal.symtab) | |
4465 | return get_objfile_arch (sal.symtab->objfile); | |
4466 | ||
4467 | return NULL; | |
4468 | } | |
4469 | ||
0d381245 VP |
4470 | /* set_raw_breakpoint is a low level routine for allocating and |
4471 | partially initializing a breakpoint of type BPTYPE. The newly | |
4472 | created breakpoint's address, section, source file name, and line | |
4473 | number are provided by SAL. The newly created and partially | |
4474 | initialized breakpoint is added to the breakpoint chain and | |
4475 | is also returned as the value of this function. | |
4476 | ||
4477 | It is expected that the caller will complete the initialization of | |
4478 | the newly created breakpoint struct as well as output any status | |
4479 | information regarding the creation of a new breakpoint. In | |
4480 | particular, set_raw_breakpoint does NOT set the breakpoint | |
4481 | number! Care should be taken to not allow an error to occur | |
4482 | prior to completing the initialization of the breakpoint. If this | |
4483 | should happen, a bogus breakpoint will be left on the chain. */ | |
4484 | ||
63c252f8 | 4485 | struct breakpoint * |
a6d9a66e UW |
4486 | set_raw_breakpoint (struct gdbarch *gdbarch, |
4487 | struct symtab_and_line sal, enum bptype bptype) | |
0d381245 | 4488 | { |
a6d9a66e | 4489 | struct breakpoint *b = set_raw_breakpoint_without_location (gdbarch, bptype); |
0d381245 | 4490 | CORE_ADDR adjusted_address; |
a6d9a66e UW |
4491 | struct gdbarch *loc_gdbarch; |
4492 | ||
4493 | loc_gdbarch = get_sal_arch (sal); | |
4494 | if (!loc_gdbarch) | |
4495 | loc_gdbarch = b->gdbarch; | |
0d381245 VP |
4496 | |
4497 | /* Adjust the breakpoint's address prior to allocating a location. | |
4498 | Once we call allocate_bp_location(), that mostly uninitialized | |
4499 | location will be placed on the location chain. Adjustment of the | |
8defab1a | 4500 | breakpoint may cause target_read_memory() to be called and we do |
0d381245 VP |
4501 | not want its scan of the location chain to find a breakpoint and |
4502 | location that's only been partially initialized. */ | |
a6d9a66e | 4503 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, sal.pc, b->type); |
0d381245 | 4504 | |
39d61571 | 4505 | b->loc = allocate_bp_location (b); |
a6d9a66e | 4506 | b->loc->gdbarch = loc_gdbarch; |
0d381245 VP |
4507 | b->loc->requested_address = sal.pc; |
4508 | b->loc->address = adjusted_address; | |
4509 | ||
4510 | if (sal.symtab == NULL) | |
4511 | b->source_file = NULL; | |
4512 | else | |
1b36a34b | 4513 | b->source_file = xstrdup (sal.symtab->filename); |
0d381245 VP |
4514 | b->loc->section = sal.section; |
4515 | b->line_number = sal.line; | |
4516 | ||
4517 | set_breakpoint_location_function (b->loc); | |
c906108c | 4518 | |
c906108c SS |
4519 | breakpoints_changed (); |
4520 | ||
4521 | return b; | |
4522 | } | |
4523 | ||
c2c6d25f JM |
4524 | |
4525 | /* Note that the breakpoint object B describes a permanent breakpoint | |
4526 | instruction, hard-wired into the inferior's code. */ | |
4527 | void | |
4528 | make_breakpoint_permanent (struct breakpoint *b) | |
4529 | { | |
0d381245 | 4530 | struct bp_location *bl; |
b5de0fa7 | 4531 | b->enable_state = bp_permanent; |
c2c6d25f | 4532 | |
0d381245 VP |
4533 | /* By definition, permanent breakpoints are already present in the code. |
4534 | Mark all locations as inserted. For now, make_breakpoint_permanent | |
4535 | is called in just one place, so it's hard to say if it's reasonable | |
4536 | to have permanent breakpoint with multiple locations or not, | |
4537 | but it's easy to implmement. */ | |
4538 | for (bl = b->loc; bl; bl = bl->next) | |
4539 | bl->inserted = 1; | |
c2c6d25f JM |
4540 | } |
4541 | ||
53a5351d | 4542 | /* Call this routine when stepping and nexting to enable a breakpoint |
0fd8e87f | 4543 | if we do a longjmp() in THREAD. When we hit that breakpoint, call |
c906108c SS |
4544 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
4545 | ||
4546 | void | |
0fd8e87f | 4547 | set_longjmp_breakpoint (int thread) |
c906108c | 4548 | { |
0fd8e87f UW |
4549 | struct breakpoint *b, *temp; |
4550 | ||
4551 | /* To avoid having to rescan all objfile symbols at every step, | |
4552 | we maintain a list of continually-inserted but always disabled | |
4553 | longjmp "master" breakpoints. Here, we simply create momentary | |
4554 | clones of those and enable them for the requested thread. */ | |
4555 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4556 | if (b->type == bp_longjmp_master) | |
4557 | { | |
4558 | struct breakpoint *clone = clone_momentary_breakpoint (b); | |
4559 | clone->type = bp_longjmp; | |
4560 | clone->thread = thread; | |
4561 | } | |
c906108c SS |
4562 | } |
4563 | ||
611c83ae | 4564 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 4565 | void |
611c83ae | 4566 | delete_longjmp_breakpoint (int thread) |
c906108c | 4567 | { |
611c83ae | 4568 | struct breakpoint *b, *temp; |
c906108c | 4569 | |
611c83ae PA |
4570 | ALL_BREAKPOINTS_SAFE (b, temp) |
4571 | if (b->type == bp_longjmp) | |
4572 | { | |
4573 | if (b->thread == thread) | |
4574 | delete_breakpoint (b); | |
4575 | } | |
c906108c SS |
4576 | } |
4577 | ||
1900040c MS |
4578 | void |
4579 | enable_overlay_breakpoints (void) | |
4580 | { | |
52f0bd74 | 4581 | struct breakpoint *b; |
1900040c MS |
4582 | |
4583 | ALL_BREAKPOINTS (b) | |
4584 | if (b->type == bp_overlay_event) | |
4585 | { | |
4586 | b->enable_state = bp_enabled; | |
b60e7edf | 4587 | update_global_location_list (1); |
c02f5703 | 4588 | overlay_events_enabled = 1; |
1900040c MS |
4589 | } |
4590 | } | |
4591 | ||
4592 | void | |
4593 | disable_overlay_breakpoints (void) | |
4594 | { | |
52f0bd74 | 4595 | struct breakpoint *b; |
1900040c MS |
4596 | |
4597 | ALL_BREAKPOINTS (b) | |
4598 | if (b->type == bp_overlay_event) | |
4599 | { | |
4600 | b->enable_state = bp_disabled; | |
b60e7edf | 4601 | update_global_location_list (0); |
c02f5703 | 4602 | overlay_events_enabled = 0; |
1900040c MS |
4603 | } |
4604 | } | |
4605 | ||
c4093a6a | 4606 | struct breakpoint * |
a6d9a66e | 4607 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
4608 | { |
4609 | struct breakpoint *b; | |
c4093a6a | 4610 | |
a6d9a66e | 4611 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event); |
c4093a6a | 4612 | |
b5de0fa7 | 4613 | b->enable_state = bp_enabled; |
c4093a6a | 4614 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5af949e3 UW |
4615 | b->addr_string |
4616 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
c4093a6a | 4617 | |
b60e7edf | 4618 | update_global_location_list_nothrow (1); |
74960c60 | 4619 | |
c4093a6a JM |
4620 | return b; |
4621 | } | |
4622 | ||
4623 | void | |
4624 | remove_thread_event_breakpoints (void) | |
4625 | { | |
4626 | struct breakpoint *b, *temp; | |
4627 | ||
4628 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4629 | if (b->type == bp_thread_event) | |
4630 | delete_breakpoint (b); | |
4631 | } | |
4632 | ||
0101ce28 JJ |
4633 | struct captured_parse_breakpoint_args |
4634 | { | |
4635 | char **arg_p; | |
4636 | struct symtabs_and_lines *sals_p; | |
4637 | char ***addr_string_p; | |
4638 | int *not_found_ptr; | |
4639 | }; | |
4640 | ||
4641 | struct lang_and_radix | |
4642 | { | |
4643 | enum language lang; | |
4644 | int radix; | |
4645 | }; | |
4646 | ||
0101ce28 | 4647 | |
cae688ec JJ |
4648 | void |
4649 | remove_solib_event_breakpoints (void) | |
4650 | { | |
4651 | struct breakpoint *b, *temp; | |
4652 | ||
4653 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4654 | if (b->type == bp_shlib_event) | |
4655 | delete_breakpoint (b); | |
4656 | } | |
4657 | ||
4658 | struct breakpoint * | |
a6d9a66e | 4659 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
cae688ec JJ |
4660 | { |
4661 | struct breakpoint *b; | |
4662 | ||
a6d9a66e | 4663 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event); |
b60e7edf | 4664 | update_global_location_list_nothrow (1); |
cae688ec JJ |
4665 | return b; |
4666 | } | |
4667 | ||
4668 | /* Disable any breakpoints that are on code in shared libraries. Only | |
4669 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4670 | ||
4671 | void | |
cb851954 | 4672 | disable_breakpoints_in_shlibs (void) |
cae688ec | 4673 | { |
0d381245 | 4674 | struct bp_location *loc; |
cae688ec | 4675 | |
0d381245 | 4676 | ALL_BP_LOCATIONS (loc) |
cae688ec | 4677 | { |
0d381245 VP |
4678 | struct breakpoint *b = loc->owner; |
4679 | /* We apply the check to all breakpoints, including disabled | |
4680 | for those with loc->duplicate set. This is so that when breakpoint | |
4681 | becomes enabled, or the duplicate is removed, gdb will try to insert | |
4682 | all breakpoints. If we don't set shlib_disabled here, we'll try | |
4683 | to insert those breakpoints and fail. */ | |
1042e4c0 SS |
4684 | if (((b->type == bp_breakpoint) |
4685 | || (b->type == bp_hardware_breakpoint) | |
4686 | || (b->type == bp_tracepoint)) | |
0d381245 | 4687 | && !loc->shlib_disabled |
a77053c2 | 4688 | #ifdef PC_SOLIB |
0d381245 | 4689 | && PC_SOLIB (loc->address) |
a77053c2 | 4690 | #else |
f5c9a895 | 4691 | && solib_name_from_address (loc->address) |
a77053c2 MK |
4692 | #endif |
4693 | ) | |
0d381245 VP |
4694 | { |
4695 | loc->shlib_disabled = 1; | |
4696 | } | |
cae688ec JJ |
4697 | } |
4698 | } | |
4699 | ||
84acb35a JJ |
4700 | /* Disable any breakpoints that are in in an unloaded shared library. Only |
4701 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4702 | ||
75149521 | 4703 | static void |
84acb35a JJ |
4704 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
4705 | { | |
0d381245 | 4706 | struct bp_location *loc; |
84acb35a JJ |
4707 | int disabled_shlib_breaks = 0; |
4708 | ||
c86cf029 VP |
4709 | /* SunOS a.out shared libraries are always mapped, so do not |
4710 | disable breakpoints; they will only be reported as unloaded | |
4711 | through clear_solib when GDB discards its shared library | |
4712 | list. See clear_solib for more information. */ | |
4713 | if (exec_bfd != NULL | |
4714 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
4715 | return; | |
4716 | ||
0d381245 | 4717 | ALL_BP_LOCATIONS (loc) |
84acb35a | 4718 | { |
0d381245 VP |
4719 | struct breakpoint *b = loc->owner; |
4720 | if ((loc->loc_type == bp_loc_hardware_breakpoint | |
4721 | || loc->loc_type == bp_loc_software_breakpoint) | |
e2dd7057 PP |
4722 | && !loc->shlib_disabled |
4723 | && (b->type == bp_breakpoint || b->type == bp_hardware_breakpoint) | |
4724 | && solib_contains_address_p (solib, loc->address)) | |
84acb35a | 4725 | { |
e2dd7057 PP |
4726 | loc->shlib_disabled = 1; |
4727 | /* At this point, we cannot rely on remove_breakpoint | |
4728 | succeeding so we must mark the breakpoint as not inserted | |
4729 | to prevent future errors occurring in remove_breakpoints. */ | |
4730 | loc->inserted = 0; | |
4731 | if (!disabled_shlib_breaks) | |
4732 | { | |
4733 | target_terminal_ours_for_output (); | |
4734 | warning (_("Temporarily disabling breakpoints for unloaded shared library \"%s\""), | |
4735 | solib->so_name); | |
84acb35a | 4736 | } |
e2dd7057 | 4737 | disabled_shlib_breaks = 1; |
84acb35a JJ |
4738 | } |
4739 | } | |
84acb35a JJ |
4740 | } |
4741 | ||
ce78b96d JB |
4742 | /* FORK & VFORK catchpoints. */ |
4743 | ||
4744 | /* Implement the "insert" breakpoint_ops method for fork catchpoints. */ | |
4745 | ||
c906108c | 4746 | static void |
ce78b96d JB |
4747 | insert_catch_fork (struct breakpoint *b) |
4748 | { | |
4749 | target_insert_fork_catchpoint (PIDGET (inferior_ptid)); | |
4750 | } | |
4751 | ||
4752 | /* Implement the "remove" breakpoint_ops method for fork catchpoints. */ | |
4753 | ||
4754 | static int | |
4755 | remove_catch_fork (struct breakpoint *b) | |
4756 | { | |
4757 | return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); | |
4758 | } | |
4759 | ||
4760 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
4761 | catchpoints. */ | |
4762 | ||
4763 | static int | |
4764 | breakpoint_hit_catch_fork (struct breakpoint *b) | |
4765 | { | |
4766 | return inferior_has_forked (inferior_ptid, &b->forked_inferior_pid); | |
4767 | } | |
4768 | ||
4769 | /* Implement the "print_it" breakpoint_ops method for fork catchpoints. */ | |
4770 | ||
4771 | static enum print_stop_action | |
4772 | print_it_catch_fork (struct breakpoint *b) | |
4773 | { | |
4774 | annotate_catchpoint (b->number); | |
4775 | printf_filtered (_("\nCatchpoint %d (forked process %d), "), | |
4776 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
4777 | return PRINT_SRC_AND_LOC; | |
4778 | } | |
4779 | ||
4780 | /* Implement the "print_one" breakpoint_ops method for fork catchpoints. */ | |
4781 | ||
4782 | static void | |
a6d9a66e | 4783 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 4784 | { |
79a45b7d TT |
4785 | struct value_print_options opts; |
4786 | ||
4787 | get_user_print_options (&opts); | |
4788 | ||
ce78b96d JB |
4789 | /* Field 4, the address, is omitted (which makes the columns |
4790 | not line up too nicely with the headers, but the effect | |
4791 | is relatively readable). */ | |
79a45b7d | 4792 | if (opts.addressprint) |
ce78b96d JB |
4793 | ui_out_field_skip (uiout, "addr"); |
4794 | annotate_field (5); | |
4795 | ui_out_text (uiout, "fork"); | |
4796 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
4797 | { | |
4798 | ui_out_text (uiout, ", process "); | |
4799 | ui_out_field_int (uiout, "what", | |
4800 | ptid_get_pid (b->forked_inferior_pid)); | |
4801 | ui_out_spaces (uiout, 1); | |
4802 | } | |
4803 | } | |
4804 | ||
4805 | /* Implement the "print_mention" breakpoint_ops method for fork | |
4806 | catchpoints. */ | |
4807 | ||
4808 | static void | |
4809 | print_mention_catch_fork (struct breakpoint *b) | |
4810 | { | |
4811 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
4812 | } | |
4813 | ||
4814 | /* The breakpoint_ops structure to be used in fork catchpoints. */ | |
4815 | ||
4816 | static struct breakpoint_ops catch_fork_breakpoint_ops = | |
4817 | { | |
4818 | insert_catch_fork, | |
4819 | remove_catch_fork, | |
4820 | breakpoint_hit_catch_fork, | |
4821 | print_it_catch_fork, | |
4822 | print_one_catch_fork, | |
4823 | print_mention_catch_fork | |
4824 | }; | |
4825 | ||
4826 | /* Implement the "insert" breakpoint_ops method for vfork catchpoints. */ | |
4827 | ||
4828 | static void | |
4829 | insert_catch_vfork (struct breakpoint *b) | |
4830 | { | |
4831 | target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); | |
4832 | } | |
4833 | ||
4834 | /* Implement the "remove" breakpoint_ops method for vfork catchpoints. */ | |
4835 | ||
4836 | static int | |
4837 | remove_catch_vfork (struct breakpoint *b) | |
4838 | { | |
4839 | return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); | |
4840 | } | |
4841 | ||
4842 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
4843 | catchpoints. */ | |
4844 | ||
4845 | static int | |
4846 | breakpoint_hit_catch_vfork (struct breakpoint *b) | |
4847 | { | |
4848 | return inferior_has_vforked (inferior_ptid, &b->forked_inferior_pid); | |
4849 | } | |
4850 | ||
4851 | /* Implement the "print_it" breakpoint_ops method for vfork catchpoints. */ | |
4852 | ||
4853 | static enum print_stop_action | |
4854 | print_it_catch_vfork (struct breakpoint *b) | |
4855 | { | |
4856 | annotate_catchpoint (b->number); | |
4857 | printf_filtered (_("\nCatchpoint %d (vforked process %d), "), | |
4858 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
4859 | return PRINT_SRC_AND_LOC; | |
4860 | } | |
4861 | ||
4862 | /* Implement the "print_one" breakpoint_ops method for vfork catchpoints. */ | |
4863 | ||
4864 | static void | |
a6d9a66e | 4865 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 4866 | { |
79a45b7d TT |
4867 | struct value_print_options opts; |
4868 | ||
4869 | get_user_print_options (&opts); | |
ce78b96d JB |
4870 | /* Field 4, the address, is omitted (which makes the columns |
4871 | not line up too nicely with the headers, but the effect | |
4872 | is relatively readable). */ | |
79a45b7d | 4873 | if (opts.addressprint) |
ce78b96d JB |
4874 | ui_out_field_skip (uiout, "addr"); |
4875 | annotate_field (5); | |
4876 | ui_out_text (uiout, "vfork"); | |
4877 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
4878 | { | |
4879 | ui_out_text (uiout, ", process "); | |
4880 | ui_out_field_int (uiout, "what", | |
4881 | ptid_get_pid (b->forked_inferior_pid)); | |
4882 | ui_out_spaces (uiout, 1); | |
4883 | } | |
4884 | } | |
4885 | ||
4886 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
4887 | catchpoints. */ | |
4888 | ||
4889 | static void | |
4890 | print_mention_catch_vfork (struct breakpoint *b) | |
4891 | { | |
4892 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
4893 | } | |
4894 | ||
4895 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ | |
4896 | ||
4897 | static struct breakpoint_ops catch_vfork_breakpoint_ops = | |
4898 | { | |
4899 | insert_catch_vfork, | |
4900 | remove_catch_vfork, | |
4901 | breakpoint_hit_catch_vfork, | |
4902 | print_it_catch_vfork, | |
4903 | print_one_catch_vfork, | |
4904 | print_mention_catch_vfork | |
4905 | }; | |
4906 | ||
4907 | /* Create a new breakpoint of the bp_catchpoint kind and return it. | |
4908 | ||
4909 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
4910 | If COND_STRING is not NULL, then store it in the breakpoint. | |
4911 | OPS, if not NULL, is the breakpoint_ops structure associated | |
4912 | to the catchpoint. */ | |
4913 | ||
4914 | static struct breakpoint * | |
a6d9a66e UW |
4915 | create_catchpoint (struct gdbarch *gdbarch, int tempflag, |
4916 | char *cond_string, struct breakpoint_ops *ops) | |
c906108c | 4917 | { |
c5aa993b JM |
4918 | struct symtab_and_line sal; |
4919 | struct breakpoint *b; | |
c5aa993b | 4920 | |
fe39c653 | 4921 | init_sal (&sal); |
c906108c SS |
4922 | sal.pc = 0; |
4923 | sal.symtab = NULL; | |
4924 | sal.line = 0; | |
c5aa993b | 4925 | |
a6d9a66e | 4926 | b = set_raw_breakpoint (gdbarch, sal, bp_catchpoint); |
c906108c SS |
4927 | set_breakpoint_count (breakpoint_count + 1); |
4928 | b->number = breakpoint_count; | |
ce78b96d | 4929 | |
1b36a34b | 4930 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
ce78b96d | 4931 | b->thread = -1; |
c906108c | 4932 | b->addr_string = NULL; |
b5de0fa7 EZ |
4933 | b->enable_state = bp_enabled; |
4934 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
ce78b96d | 4935 | b->ops = ops; |
c5aa993b | 4936 | |
c906108c | 4937 | mention (b); |
ce78b96d | 4938 | update_global_location_list (1); |
c906108c | 4939 | |
ce78b96d | 4940 | return b; |
c906108c | 4941 | } |
c5aa993b | 4942 | |
9b70b993 | 4943 | static void |
a6d9a66e UW |
4944 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
4945 | int tempflag, char *cond_string, | |
ce78b96d | 4946 | struct breakpoint_ops *ops) |
c906108c | 4947 | { |
a6d9a66e UW |
4948 | struct breakpoint *b |
4949 | = create_catchpoint (gdbarch, tempflag, cond_string, ops); | |
ce78b96d JB |
4950 | |
4951 | /* FIXME: We should put this information in a breakpoint private data | |
4952 | area. */ | |
4953 | b->forked_inferior_pid = null_ptid; | |
c906108c SS |
4954 | } |
4955 | ||
fe798b75 JB |
4956 | /* Exec catchpoints. */ |
4957 | ||
9b70b993 | 4958 | static void |
fe798b75 | 4959 | insert_catch_exec (struct breakpoint *b) |
c906108c | 4960 | { |
fe798b75 JB |
4961 | target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
4962 | } | |
c906108c | 4963 | |
fe798b75 JB |
4964 | static int |
4965 | remove_catch_exec (struct breakpoint *b) | |
4966 | { | |
4967 | return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); | |
4968 | } | |
c906108c | 4969 | |
fe798b75 JB |
4970 | static int |
4971 | breakpoint_hit_catch_exec (struct breakpoint *b) | |
4972 | { | |
4973 | return inferior_has_execd (inferior_ptid, &b->exec_pathname); | |
4974 | } | |
c906108c | 4975 | |
fe798b75 JB |
4976 | static enum print_stop_action |
4977 | print_it_catch_exec (struct breakpoint *b) | |
4978 | { | |
4979 | annotate_catchpoint (b->number); | |
4980 | printf_filtered (_("\nCatchpoint %d (exec'd %s), "), b->number, | |
4981 | b->exec_pathname); | |
4982 | return PRINT_SRC_AND_LOC; | |
c906108c SS |
4983 | } |
4984 | ||
fe798b75 | 4985 | static void |
a6d9a66e | 4986 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 JB |
4987 | { |
4988 | struct value_print_options opts; | |
4989 | ||
4990 | get_user_print_options (&opts); | |
4991 | ||
4992 | /* Field 4, the address, is omitted (which makes the columns | |
4993 | not line up too nicely with the headers, but the effect | |
4994 | is relatively readable). */ | |
4995 | if (opts.addressprint) | |
4996 | ui_out_field_skip (uiout, "addr"); | |
4997 | annotate_field (5); | |
4998 | ui_out_text (uiout, "exec"); | |
4999 | if (b->exec_pathname != NULL) | |
5000 | { | |
5001 | ui_out_text (uiout, ", program \""); | |
5002 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
5003 | ui_out_text (uiout, "\" "); | |
5004 | } | |
5005 | } | |
5006 | ||
5007 | static void | |
5008 | print_mention_catch_exec (struct breakpoint *b) | |
5009 | { | |
5010 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
5011 | } | |
5012 | ||
5013 | static struct breakpoint_ops catch_exec_breakpoint_ops = | |
5014 | { | |
5015 | insert_catch_exec, | |
5016 | remove_catch_exec, | |
5017 | breakpoint_hit_catch_exec, | |
5018 | print_it_catch_exec, | |
5019 | print_one_catch_exec, | |
5020 | print_mention_catch_exec | |
5021 | }; | |
5022 | ||
c906108c | 5023 | static int |
fba45db2 | 5024 | hw_breakpoint_used_count (void) |
c906108c | 5025 | { |
52f0bd74 | 5026 | struct breakpoint *b; |
c906108c SS |
5027 | int i = 0; |
5028 | ||
5029 | ALL_BREAKPOINTS (b) | |
c5aa993b | 5030 | { |
d6b74ac4 | 5031 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
c5aa993b JM |
5032 | i++; |
5033 | } | |
c906108c SS |
5034 | |
5035 | return i; | |
5036 | } | |
5037 | ||
5038 | static int | |
fba45db2 | 5039 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 5040 | { |
52f0bd74 | 5041 | struct breakpoint *b; |
c906108c SS |
5042 | int i = 0; |
5043 | ||
5044 | *other_type_used = 0; | |
5045 | ALL_BREAKPOINTS (b) | |
c5aa993b | 5046 | { |
468d015d | 5047 | if (breakpoint_enabled (b)) |
c5aa993b JM |
5048 | { |
5049 | if (b->type == type) | |
5050 | i++; | |
059fb39f PM |
5051 | else if ((b->type == bp_hardware_watchpoint |
5052 | || b->type == bp_read_watchpoint | |
5053 | || b->type == bp_access_watchpoint)) | |
c5aa993b JM |
5054 | *other_type_used = 1; |
5055 | } | |
5056 | } | |
c906108c SS |
5057 | return i; |
5058 | } | |
5059 | ||
c906108c | 5060 | void |
fba45db2 | 5061 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 5062 | { |
c5aa993b | 5063 | struct breakpoint *b; |
c906108c SS |
5064 | |
5065 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
5066 | { |
5067 | if (((b->type == bp_watchpoint) | |
5068 | || (b->type == bp_hardware_watchpoint) | |
5069 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 5070 | || (b->type == bp_access_watchpoint)) |
468d015d | 5071 | && breakpoint_enabled (b)) |
c5aa993b | 5072 | { |
b5de0fa7 | 5073 | b->enable_state = bp_call_disabled; |
b60e7edf | 5074 | update_global_location_list (0); |
c5aa993b JM |
5075 | } |
5076 | } | |
c906108c SS |
5077 | } |
5078 | ||
5079 | void | |
fba45db2 | 5080 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 5081 | { |
c5aa993b | 5082 | struct breakpoint *b; |
c906108c SS |
5083 | |
5084 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
5085 | { |
5086 | if (((b->type == bp_watchpoint) | |
5087 | || (b->type == bp_hardware_watchpoint) | |
5088 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 5089 | || (b->type == bp_access_watchpoint)) |
b5de0fa7 | 5090 | && (b->enable_state == bp_call_disabled)) |
c5aa993b | 5091 | { |
b5de0fa7 | 5092 | b->enable_state = bp_enabled; |
b60e7edf | 5093 | update_global_location_list (1); |
c5aa993b JM |
5094 | } |
5095 | } | |
c906108c SS |
5096 | } |
5097 | ||
5098 | ||
5099 | /* Set a breakpoint that will evaporate an end of command | |
5100 | at address specified by SAL. | |
5101 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
5102 | ||
5103 | struct breakpoint * | |
a6d9a66e UW |
5104 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
5105 | struct frame_id frame_id, enum bptype type) | |
c906108c | 5106 | { |
52f0bd74 | 5107 | struct breakpoint *b; |
edb3359d DJ |
5108 | |
5109 | /* If FRAME_ID is valid, it should be a real frame, not an inlined | |
5110 | one. */ | |
5111 | gdb_assert (!frame_id_inlined_p (frame_id)); | |
5112 | ||
a6d9a66e | 5113 | b = set_raw_breakpoint (gdbarch, sal, type); |
b5de0fa7 EZ |
5114 | b->enable_state = bp_enabled; |
5115 | b->disposition = disp_donttouch; | |
818dd999 | 5116 | b->frame_id = frame_id; |
c906108c SS |
5117 | |
5118 | /* If we're debugging a multi-threaded program, then we | |
5119 | want momentary breakpoints to be active in only a | |
5120 | single thread of control. */ | |
39f77062 KB |
5121 | if (in_thread_list (inferior_ptid)) |
5122 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 5123 | |
b60e7edf | 5124 | update_global_location_list_nothrow (1); |
74960c60 | 5125 | |
c906108c SS |
5126 | return b; |
5127 | } | |
611c83ae | 5128 | |
e58b0e63 PA |
5129 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
5130 | ORIG is NULL. */ | |
5131 | ||
5132 | struct breakpoint * | |
5133 | clone_momentary_breakpoint (struct breakpoint *orig) | |
5134 | { | |
5135 | struct breakpoint *copy; | |
5136 | ||
5137 | /* If there's nothing to clone, then return nothing. */ | |
5138 | if (orig == NULL) | |
5139 | return NULL; | |
5140 | ||
a6d9a66e | 5141 | copy = set_raw_breakpoint_without_location (orig->gdbarch, orig->type); |
e58b0e63 PA |
5142 | copy->loc = allocate_bp_location (copy); |
5143 | set_breakpoint_location_function (copy->loc); | |
5144 | ||
a6d9a66e | 5145 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
5146 | copy->loc->requested_address = orig->loc->requested_address; |
5147 | copy->loc->address = orig->loc->address; | |
5148 | copy->loc->section = orig->loc->section; | |
5149 | ||
5150 | if (orig->source_file == NULL) | |
5151 | copy->source_file = NULL; | |
5152 | else | |
5153 | copy->source_file = xstrdup (orig->source_file); | |
5154 | ||
5155 | copy->line_number = orig->line_number; | |
5156 | copy->frame_id = orig->frame_id; | |
5157 | copy->thread = orig->thread; | |
5158 | ||
5159 | copy->enable_state = bp_enabled; | |
5160 | copy->disposition = disp_donttouch; | |
5161 | copy->number = internal_breakpoint_number--; | |
5162 | ||
5163 | update_global_location_list_nothrow (0); | |
5164 | return copy; | |
5165 | } | |
5166 | ||
611c83ae | 5167 | struct breakpoint * |
a6d9a66e UW |
5168 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
5169 | enum bptype type) | |
611c83ae PA |
5170 | { |
5171 | struct symtab_and_line sal; | |
5172 | ||
5173 | sal = find_pc_line (pc, 0); | |
5174 | sal.pc = pc; | |
5175 | sal.section = find_pc_overlay (pc); | |
5176 | sal.explicit_pc = 1; | |
5177 | ||
a6d9a66e | 5178 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 5179 | } |
c906108c | 5180 | \f |
c5aa993b | 5181 | |
c906108c SS |
5182 | /* Tell the user we have just set a breakpoint B. */ |
5183 | ||
5184 | static void | |
fba45db2 | 5185 | mention (struct breakpoint *b) |
c906108c SS |
5186 | { |
5187 | int say_where = 0; | |
fa8a61dc | 5188 | struct cleanup *ui_out_chain; |
79a45b7d TT |
5189 | struct value_print_options opts; |
5190 | ||
5191 | get_user_print_options (&opts); | |
8b93c638 | 5192 | |
9a4105ab AC |
5193 | /* FIXME: This is misplaced; mention() is called by things (like |
5194 | hitting a watchpoint) other than breakpoint creation. It should | |
5195 | be possible to clean this up and at the same time replace the | |
7f4b89d1 | 5196 | random calls to breakpoint_changed with this hook. */ |
383f836e | 5197 | observer_notify_breakpoint_created (b->number); |
c906108c | 5198 | |
3086aeae DJ |
5199 | if (b->ops != NULL && b->ops->print_mention != NULL) |
5200 | b->ops->print_mention (b); | |
5201 | else | |
5202 | switch (b->type) | |
5203 | { | |
5204 | case bp_none: | |
a3f17187 | 5205 | printf_filtered (_("(apparently deleted?) Eventpoint %d: "), b->number); |
3086aeae DJ |
5206 | break; |
5207 | case bp_watchpoint: | |
5208 | ui_out_text (uiout, "Watchpoint "); | |
5209 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
5210 | ui_out_field_int (uiout, "number", b->number); | |
5211 | ui_out_text (uiout, ": "); | |
fa8a61dc | 5212 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
5213 | do_cleanups (ui_out_chain); |
5214 | break; | |
5215 | case bp_hardware_watchpoint: | |
5216 | ui_out_text (uiout, "Hardware watchpoint "); | |
5217 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
5218 | ui_out_field_int (uiout, "number", b->number); | |
5219 | ui_out_text (uiout, ": "); | |
fa8a61dc | 5220 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
5221 | do_cleanups (ui_out_chain); |
5222 | break; | |
5223 | case bp_read_watchpoint: | |
5224 | ui_out_text (uiout, "Hardware read watchpoint "); | |
5225 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
5226 | ui_out_field_int (uiout, "number", b->number); | |
5227 | ui_out_text (uiout, ": "); | |
fa8a61dc | 5228 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
5229 | do_cleanups (ui_out_chain); |
5230 | break; | |
5231 | case bp_access_watchpoint: | |
5232 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
5233 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
5234 | ui_out_field_int (uiout, "number", b->number); | |
5235 | ui_out_text (uiout, ": "); | |
fa8a61dc | 5236 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
5237 | do_cleanups (ui_out_chain); |
5238 | break; | |
5239 | case bp_breakpoint: | |
5240 | if (ui_out_is_mi_like_p (uiout)) | |
5241 | { | |
5242 | say_where = 0; | |
5243 | break; | |
5244 | } | |
2cec12e5 AR |
5245 | if (b->disposition == disp_del) |
5246 | printf_filtered (_("Temporary breakpoint")); | |
5247 | else | |
5248 | printf_filtered (_("Breakpoint")); | |
5249 | printf_filtered (_(" %d"), b->number); | |
3086aeae DJ |
5250 | say_where = 1; |
5251 | break; | |
5252 | case bp_hardware_breakpoint: | |
5253 | if (ui_out_is_mi_like_p (uiout)) | |
5254 | { | |
5255 | say_where = 0; | |
5256 | break; | |
5257 | } | |
a3f17187 | 5258 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); |
3086aeae DJ |
5259 | say_where = 1; |
5260 | break; | |
1042e4c0 SS |
5261 | case bp_tracepoint: |
5262 | if (ui_out_is_mi_like_p (uiout)) | |
5263 | { | |
5264 | say_where = 0; | |
5265 | break; | |
5266 | } | |
5267 | printf_filtered (_("Tracepoint")); | |
5268 | printf_filtered (_(" %d"), b->number); | |
5269 | say_where = 1; | |
5270 | break; | |
3086aeae DJ |
5271 | |
5272 | case bp_until: | |
5273 | case bp_finish: | |
5274 | case bp_longjmp: | |
5275 | case bp_longjmp_resume: | |
5276 | case bp_step_resume: | |
3086aeae DJ |
5277 | case bp_call_dummy: |
5278 | case bp_watchpoint_scope: | |
5279 | case bp_shlib_event: | |
5280 | case bp_thread_event: | |
5281 | case bp_overlay_event: | |
0fd8e87f | 5282 | case bp_longjmp_master: |
3086aeae DJ |
5283 | break; |
5284 | } | |
c906108c | 5285 | |
c906108c SS |
5286 | if (say_where) |
5287 | { | |
a3f17187 AC |
5288 | /* i18n: cagney/2005-02-11: Below needs to be merged into a |
5289 | single string. */ | |
0d381245 | 5290 | if (b->loc == NULL) |
c906108c | 5291 | { |
a3f17187 | 5292 | printf_filtered (_(" (%s) pending."), b->addr_string); |
0101ce28 JJ |
5293 | } |
5294 | else | |
5295 | { | |
79a45b7d | 5296 | if (opts.addressprint || b->source_file == NULL) |
0101ce28 JJ |
5297 | { |
5298 | printf_filtered (" at "); | |
5af949e3 UW |
5299 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), |
5300 | gdb_stdout); | |
0101ce28 JJ |
5301 | } |
5302 | if (b->source_file) | |
5303 | printf_filtered (": file %s, line %d.", | |
5304 | b->source_file, b->line_number); | |
0d381245 VP |
5305 | |
5306 | if (b->loc->next) | |
5307 | { | |
5308 | struct bp_location *loc = b->loc; | |
5309 | int n = 0; | |
5310 | for (; loc; loc = loc->next) | |
5311 | ++n; | |
5312 | printf_filtered (" (%d locations)", n); | |
5313 | } | |
5314 | ||
c906108c | 5315 | } |
c906108c | 5316 | } |
9dc5e2a9 | 5317 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 5318 | return; |
c906108c SS |
5319 | printf_filtered ("\n"); |
5320 | } | |
c906108c | 5321 | \f |
c5aa993b | 5322 | |
0d381245 | 5323 | static struct bp_location * |
39d61571 | 5324 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
5325 | const struct symtab_and_line *sal) |
5326 | { | |
5327 | struct bp_location *loc, **tmp; | |
5328 | ||
39d61571 | 5329 | loc = allocate_bp_location (b); |
0d381245 VP |
5330 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
5331 | ; | |
5332 | *tmp = loc; | |
a6d9a66e UW |
5333 | loc->gdbarch = get_sal_arch (*sal); |
5334 | if (!loc->gdbarch) | |
5335 | loc->gdbarch = b->gdbarch; | |
0d381245 | 5336 | loc->requested_address = sal->pc; |
a6d9a66e UW |
5337 | loc->address = adjust_breakpoint_address (loc->gdbarch, |
5338 | loc->requested_address, b->type); | |
0d381245 VP |
5339 | loc->section = sal->section; |
5340 | ||
5341 | set_breakpoint_location_function (loc); | |
5342 | return loc; | |
5343 | } | |
514f746b AR |
5344 | \f |
5345 | ||
5346 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
5347 | return 0 otherwise. */ | |
5348 | ||
5349 | static int | |
5350 | bp_loc_is_permanent (struct bp_location *loc) | |
5351 | { | |
5352 | int len; | |
5353 | CORE_ADDR addr; | |
5354 | const gdb_byte *brk; | |
5355 | gdb_byte *target_mem; | |
939c61fa JK |
5356 | struct cleanup *cleanup; |
5357 | int retval = 0; | |
514f746b AR |
5358 | |
5359 | gdb_assert (loc != NULL); | |
5360 | ||
5361 | addr = loc->address; | |
a6d9a66e | 5362 | brk = gdbarch_breakpoint_from_pc (loc->gdbarch, &addr, &len); |
514f746b | 5363 | |
939c61fa JK |
5364 | /* Software breakpoints unsupported? */ |
5365 | if (brk == NULL) | |
5366 | return 0; | |
5367 | ||
514f746b AR |
5368 | target_mem = alloca (len); |
5369 | ||
939c61fa JK |
5370 | /* Enable the automatic memory restoration from breakpoints while |
5371 | we read the memory. Otherwise we could say about our temporary | |
5372 | breakpoints they are permanent. */ | |
5373 | cleanup = make_show_memory_breakpoints_cleanup (0); | |
5374 | ||
514f746b AR |
5375 | if (target_read_memory (loc->address, target_mem, len) == 0 |
5376 | && memcmp (target_mem, brk, len) == 0) | |
939c61fa | 5377 | retval = 1; |
514f746b | 5378 | |
939c61fa JK |
5379 | do_cleanups (cleanup); |
5380 | ||
5381 | return retval; | |
514f746b AR |
5382 | } |
5383 | ||
5384 | ||
c3f6f71d | 5385 | |
018d34a4 VP |
5386 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
5387 | as textual description of the location, and COND_STRING | |
db107f19 | 5388 | as condition expression. */ |
018d34a4 VP |
5389 | |
5390 | static void | |
a6d9a66e UW |
5391 | create_breakpoint (struct gdbarch *gdbarch, |
5392 | struct symtabs_and_lines sals, char *addr_string, | |
018d34a4 VP |
5393 | char *cond_string, |
5394 | enum bptype type, enum bpdisp disposition, | |
4a306c9a | 5395 | int thread, int task, int ignore_count, |
41447f92 | 5396 | struct breakpoint_ops *ops, int from_tty, int enabled) |
018d34a4 | 5397 | { |
0d381245 VP |
5398 | struct breakpoint *b = NULL; |
5399 | int i; | |
018d34a4 VP |
5400 | |
5401 | if (type == bp_hardware_breakpoint) | |
5402 | { | |
5403 | int i = hw_breakpoint_used_count (); | |
5404 | int target_resources_ok = | |
d92524f1 | 5405 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
018d34a4 VP |
5406 | i + 1, 0); |
5407 | if (target_resources_ok == 0) | |
5408 | error (_("No hardware breakpoint support in the target.")); | |
5409 | else if (target_resources_ok < 0) | |
5410 | error (_("Hardware breakpoints used exceeds limit.")); | |
5411 | } | |
5412 | ||
0d381245 VP |
5413 | for (i = 0; i < sals.nelts; ++i) |
5414 | { | |
5415 | struct symtab_and_line sal = sals.sals[i]; | |
5416 | struct bp_location *loc; | |
5417 | ||
5418 | if (from_tty) | |
5af949e3 UW |
5419 | { |
5420 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
5421 | if (!loc_gdbarch) | |
5422 | loc_gdbarch = gdbarch; | |
5423 | ||
5424 | describe_other_breakpoints (loc_gdbarch, | |
5425 | sal.pc, sal.section, thread); | |
5426 | } | |
0d381245 VP |
5427 | |
5428 | if (i == 0) | |
5429 | { | |
a6d9a66e | 5430 | b = set_raw_breakpoint (gdbarch, sal, type); |
0d381245 VP |
5431 | set_breakpoint_count (breakpoint_count + 1); |
5432 | b->number = breakpoint_count; | |
5433 | b->thread = thread; | |
4a306c9a | 5434 | b->task = task; |
018d34a4 | 5435 | |
0d381245 VP |
5436 | b->cond_string = cond_string; |
5437 | b->ignore_count = ignore_count; | |
41447f92 | 5438 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 5439 | b->disposition = disposition; |
018d34a4 | 5440 | |
0d381245 VP |
5441 | loc = b->loc; |
5442 | } | |
5443 | else | |
018d34a4 | 5444 | { |
39d61571 | 5445 | loc = add_location_to_breakpoint (b, &sal); |
0d381245 VP |
5446 | } |
5447 | ||
514f746b AR |
5448 | if (bp_loc_is_permanent (loc)) |
5449 | make_breakpoint_permanent (b); | |
5450 | ||
0d381245 VP |
5451 | if (b->cond_string) |
5452 | { | |
5453 | char *arg = b->cond_string; | |
d32a6982 | 5454 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); |
0d381245 | 5455 | if (*arg) |
db107f19 | 5456 | error (_("Garbage %s follows condition"), arg); |
018d34a4 | 5457 | } |
0d381245 | 5458 | } |
018d34a4 VP |
5459 | |
5460 | if (addr_string) | |
5461 | b->addr_string = addr_string; | |
5462 | else | |
5463 | /* addr_string has to be used or breakpoint_re_set will delete | |
5464 | me. */ | |
5af949e3 UW |
5465 | b->addr_string |
5466 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
018d34a4 | 5467 | |
604133b5 | 5468 | b->ops = ops; |
018d34a4 VP |
5469 | mention (b); |
5470 | } | |
5471 | ||
ed0616c6 VP |
5472 | /* Remove element at INDEX_TO_REMOVE from SAL, shifting other |
5473 | elements to fill the void space. */ | |
2c0b251b PA |
5474 | static void |
5475 | remove_sal (struct symtabs_and_lines *sal, int index_to_remove) | |
ed0616c6 VP |
5476 | { |
5477 | int i = index_to_remove+1; | |
5478 | int last_index = sal->nelts-1; | |
5479 | ||
5480 | for (;i <= last_index; ++i) | |
5481 | sal->sals[i-1] = sal->sals[i]; | |
5482 | ||
5483 | --(sal->nelts); | |
5484 | } | |
5485 | ||
5486 | /* If appropriate, obtains all sals that correspond | |
5487 | to the same file and line as SAL. This is done | |
5488 | only if SAL does not have explicit PC and has | |
5489 | line and file information. If we got just a single | |
5490 | expanded sal, return the original. | |
5491 | ||
5492 | Otherwise, if SAL.explicit_line is not set, filter out | |
5493 | all sals for which the name of enclosing function | |
5494 | is different from SAL. This makes sure that if we have | |
5495 | breakpoint originally set in template instantiation, say | |
5496 | foo<int>(), we won't expand SAL to locations at the same | |
5497 | line in all existing instantiations of 'foo'. | |
5498 | ||
5499 | */ | |
2c0b251b | 5500 | static struct symtabs_and_lines |
ed0616c6 VP |
5501 | expand_line_sal_maybe (struct symtab_and_line sal) |
5502 | { | |
5503 | struct symtabs_and_lines expanded; | |
5504 | CORE_ADDR original_pc = sal.pc; | |
5505 | char *original_function = NULL; | |
5506 | int found; | |
5507 | int i; | |
5508 | ||
5509 | /* If we have explicit pc, don't expand. | |
5510 | If we have no line number, we can't expand. */ | |
5511 | if (sal.explicit_pc || sal.line == 0 || sal.symtab == NULL) | |
5512 | { | |
5513 | expanded.nelts = 1; | |
5514 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5515 | expanded.sals[0] = sal; | |
5516 | return expanded; | |
5517 | } | |
5518 | ||
5519 | sal.pc = 0; | |
5520 | find_pc_partial_function (original_pc, &original_function, NULL, NULL); | |
5521 | ||
5522 | expanded = expand_line_sal (sal); | |
5523 | if (expanded.nelts == 1) | |
5524 | { | |
5525 | /* We had one sal, we got one sal. Without futher | |
5526 | processing, just return the original sal. */ | |
5527 | xfree (expanded.sals); | |
5528 | expanded.nelts = 1; | |
5529 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5530 | sal.pc = original_pc; | |
5531 | expanded.sals[0] = sal; | |
5532 | return expanded; | |
5533 | } | |
5534 | ||
5535 | if (!sal.explicit_line) | |
5536 | { | |
5537 | CORE_ADDR func_addr, func_end; | |
5538 | for (i = 0; i < expanded.nelts; ++i) | |
5539 | { | |
5540 | CORE_ADDR pc = expanded.sals[i].pc; | |
5541 | char *this_function; | |
5542 | if (find_pc_partial_function (pc, &this_function, | |
5543 | &func_addr, &func_end)) | |
5544 | { | |
059fb39f PM |
5545 | if (this_function |
5546 | && strcmp (this_function, original_function) != 0) | |
ed0616c6 VP |
5547 | { |
5548 | remove_sal (&expanded, i); | |
5549 | --i; | |
5550 | } | |
5551 | else if (func_addr == pc) | |
5552 | { | |
5553 | /* We're at beginning of a function, and should | |
5554 | skip prologue. */ | |
5555 | struct symbol *sym = find_pc_function (pc); | |
5556 | if (sym) | |
5557 | expanded.sals[i] = find_function_start_sal (sym, 1); | |
5558 | else | |
d80b854b UW |
5559 | { |
5560 | /* Since find_pc_partial_function returned true, | |
5561 | we should really always find the section here. */ | |
5562 | struct obj_section *section = find_pc_section (pc); | |
5563 | if (section) | |
5564 | { | |
5565 | struct gdbarch *gdbarch | |
5566 | = get_objfile_arch (section->objfile); | |
5567 | expanded.sals[i].pc | |
5568 | = gdbarch_skip_prologue (gdbarch, pc); | |
5569 | } | |
5570 | } | |
ed0616c6 VP |
5571 | } |
5572 | } | |
5573 | } | |
5574 | } | |
3daf8fe5 JG |
5575 | else |
5576 | { | |
5577 | for (i = 0; i < expanded.nelts; ++i) | |
5578 | { | |
5579 | /* If this SAL corresponds to a breakpoint inserted using a | |
5580 | line number, then skip the function prologue if necessary. */ | |
5581 | skip_prologue_sal (&expanded.sals[i]); | |
5582 | } | |
5583 | } | |
ed0616c6 VP |
5584 | |
5585 | ||
5586 | if (expanded.nelts <= 1) | |
5587 | { | |
5588 | /* This is un ugly workaround. If we get zero | |
5589 | expanded sals then something is really wrong. | |
5590 | Fix that by returnign the original sal. */ | |
5591 | xfree (expanded.sals); | |
5592 | expanded.nelts = 1; | |
5593 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5594 | sal.pc = original_pc; | |
5595 | expanded.sals[0] = sal; | |
5596 | return expanded; | |
5597 | } | |
5598 | ||
5599 | if (original_pc) | |
5600 | { | |
5601 | found = 0; | |
5602 | for (i = 0; i < expanded.nelts; ++i) | |
5603 | if (expanded.sals[i].pc == original_pc) | |
5604 | { | |
5605 | found = 1; | |
5606 | break; | |
5607 | } | |
5608 | gdb_assert (found); | |
5609 | } | |
5610 | ||
5611 | return expanded; | |
5612 | } | |
5613 | ||
018d34a4 VP |
5614 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
5615 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
5616 | value. COND_STRING, if not NULL, specified the condition to be | |
5617 | used for all breakpoints. Essentially the only case where | |
5618 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
5619 | function. In that case, it's still not possible to specify | |
5620 | separate conditions for different overloaded functions, so | |
5621 | we take just a single condition string. | |
5622 | ||
c3f6f71d | 5623 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 5624 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
5625 | array contents). If the function fails (error() is called), the |
5626 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
5627 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
5628 | |
5629 | static void | |
a6d9a66e UW |
5630 | create_breakpoints (struct gdbarch *gdbarch, |
5631 | struct symtabs_and_lines sals, char **addr_string, | |
018d34a4 | 5632 | char *cond_string, |
c3f6f71d | 5633 | enum bptype type, enum bpdisp disposition, |
4a306c9a | 5634 | int thread, int task, int ignore_count, |
41447f92 VP |
5635 | struct breakpoint_ops *ops, int from_tty, |
5636 | int enabled) | |
c906108c | 5637 | { |
018d34a4 VP |
5638 | int i; |
5639 | for (i = 0; i < sals.nelts; ++i) | |
c3f6f71d | 5640 | { |
ed0616c6 VP |
5641 | struct symtabs_and_lines expanded = |
5642 | expand_line_sal_maybe (sals.sals[i]); | |
0d381245 | 5643 | |
a6d9a66e | 5644 | create_breakpoint (gdbarch, expanded, addr_string[i], |
018d34a4 | 5645 | cond_string, type, disposition, |
4a306c9a | 5646 | thread, task, ignore_count, ops, from_tty, enabled); |
c3f6f71d | 5647 | } |
c3f6f71d | 5648 | } |
c906108c | 5649 | |
c3f6f71d JM |
5650 | /* Parse ARG which is assumed to be a SAL specification possibly |
5651 | followed by conditionals. On return, SALS contains an array of SAL | |
5652 | addresses found. ADDR_STRING contains a vector of (canonical) | |
5653 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 5654 | |
b9362cc7 | 5655 | static void |
c3f6f71d JM |
5656 | parse_breakpoint_sals (char **address, |
5657 | struct symtabs_and_lines *sals, | |
0101ce28 JJ |
5658 | char ***addr_string, |
5659 | int *not_found_ptr) | |
c3f6f71d JM |
5660 | { |
5661 | char *addr_start = *address; | |
5662 | *addr_string = NULL; | |
5663 | /* If no arg given, or if first arg is 'if ', use the default | |
5664 | breakpoint. */ | |
5665 | if ((*address) == NULL | |
5666 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
5667 | { |
5668 | if (default_breakpoint_valid) | |
5669 | { | |
c3f6f71d | 5670 | struct symtab_and_line sal; |
fe39c653 | 5671 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 5672 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
5673 | xmalloc (sizeof (struct symtab_and_line)); |
5674 | sal.pc = default_breakpoint_address; | |
5675 | sal.line = default_breakpoint_line; | |
5676 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 5677 | sal.section = find_pc_overlay (sal.pc); |
00903456 JK |
5678 | |
5679 | /* "break" without arguments is equivalent to "break *PC" where PC is | |
5680 | the default_breakpoint_address. So make sure to set | |
5681 | sal.explicit_pc to prevent GDB from trying to expand the list of | |
5682 | sals to include all other instances with the same symtab and line. | |
5683 | */ | |
5684 | sal.explicit_pc = 1; | |
5685 | ||
c3f6f71d JM |
5686 | sals->sals[0] = sal; |
5687 | sals->nelts = 1; | |
c906108c SS |
5688 | } |
5689 | else | |
8a3fe4f8 | 5690 | error (_("No default breakpoint address now.")); |
c906108c SS |
5691 | } |
5692 | else | |
5693 | { | |
c906108c | 5694 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
5695 | current_source_symtab (which is decode_line_1's default). This |
5696 | should produce the results we want almost all of the time while | |
1aeae86e AF |
5697 | leaving default_breakpoint_* alone. |
5698 | ObjC: However, don't match an Objective-C method name which | |
5699 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 5700 | |
c214a6fd | 5701 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 5702 | |
c906108c | 5703 | if (default_breakpoint_valid |
0378c332 | 5704 | && (!cursal.symtab |
1aeae86e AF |
5705 | || ((strchr ("+-", (*address)[0]) != NULL) |
5706 | && ((*address)[1] != '[')))) | |
c3f6f71d | 5707 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
0101ce28 JJ |
5708 | default_breakpoint_line, addr_string, |
5709 | not_found_ptr); | |
c906108c | 5710 | else |
0101ce28 JJ |
5711 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
5712 | addr_string, not_found_ptr); | |
c906108c | 5713 | } |
c3f6f71d JM |
5714 | /* For any SAL that didn't have a canonical string, fill one in. */ |
5715 | if (sals->nelts > 0 && *addr_string == NULL) | |
5716 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
5717 | if (addr_start != (*address)) | |
c906108c | 5718 | { |
c3f6f71d JM |
5719 | int i; |
5720 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 5721 | { |
c3f6f71d JM |
5722 | /* Add the string if not present. */ |
5723 | if ((*addr_string)[i] == NULL) | |
5724 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
5725 | } |
5726 | } | |
c3f6f71d | 5727 | } |
c906108c | 5728 | |
c906108c | 5729 | |
c3f6f71d JM |
5730 | /* Convert each SAL into a real PC. Verify that the PC can be |
5731 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 5732 | |
b9362cc7 | 5733 | static void |
c3f6f71d JM |
5734 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, |
5735 | char *address) | |
5736 | { | |
5737 | int i; | |
5738 | for (i = 0; i < sals->nelts; i++) | |
ee53e872 | 5739 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
5740 | } |
5741 | ||
05ff989b | 5742 | static void |
0101ce28 JJ |
5743 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) |
5744 | { | |
5745 | struct captured_parse_breakpoint_args *args = data; | |
5746 | ||
5747 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p, | |
5748 | args->not_found_ptr); | |
0101ce28 JJ |
5749 | } |
5750 | ||
018d34a4 VP |
5751 | /* Given TOK, a string specification of condition and thread, as |
5752 | accepted by the 'break' command, extract the condition | |
5753 | string and thread number and set *COND_STRING and *THREAD. | |
5754 | PC identifies the context at which the condition should be parsed. | |
5755 | If no condition is found, *COND_STRING is set to NULL. | |
5756 | If no thread is found, *THREAD is set to -1. */ | |
5757 | static void | |
5758 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
4a306c9a | 5759 | char **cond_string, int *thread, int *task) |
018d34a4 VP |
5760 | { |
5761 | *cond_string = NULL; | |
5762 | *thread = -1; | |
5763 | while (tok && *tok) | |
5764 | { | |
5765 | char *end_tok; | |
5766 | int toklen; | |
5767 | char *cond_start = NULL; | |
5768 | char *cond_end = NULL; | |
5769 | while (*tok == ' ' || *tok == '\t') | |
5770 | tok++; | |
5771 | ||
5772 | end_tok = tok; | |
5773 | ||
5774 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5775 | end_tok++; | |
5776 | ||
5777 | toklen = end_tok - tok; | |
5778 | ||
5779 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5780 | { | |
f7545552 TT |
5781 | struct expression *expr; |
5782 | ||
018d34a4 | 5783 | tok = cond_start = end_tok + 1; |
f7545552 TT |
5784 | expr = parse_exp_1 (&tok, block_for_pc (pc), 0); |
5785 | xfree (expr); | |
018d34a4 VP |
5786 | cond_end = tok; |
5787 | *cond_string = savestring (cond_start, | |
5788 | cond_end - cond_start); | |
5789 | } | |
5790 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5791 | { | |
5792 | char *tmptok; | |
5793 | ||
5794 | tok = end_tok + 1; | |
5795 | tmptok = tok; | |
5796 | *thread = strtol (tok, &tok, 0); | |
5797 | if (tok == tmptok) | |
5798 | error (_("Junk after thread keyword.")); | |
5799 | if (!valid_thread_id (*thread)) | |
5800 | error (_("Unknown thread %d."), *thread); | |
5801 | } | |
4a306c9a JB |
5802 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
5803 | { | |
5804 | char *tmptok; | |
5805 | ||
5806 | tok = end_tok + 1; | |
5807 | tmptok = tok; | |
5808 | *task = strtol (tok, &tok, 0); | |
5809 | if (tok == tmptok) | |
5810 | error (_("Junk after task keyword.")); | |
5811 | if (!valid_task_id (*task)) | |
5812 | error (_("Unknown task %d\n"), *task); | |
5813 | } | |
018d34a4 VP |
5814 | else |
5815 | error (_("Junk at end of arguments.")); | |
5816 | } | |
5817 | } | |
5818 | ||
72b2ff0e VP |
5819 | /* Set a breakpoint. This function is shared between |
5820 | CLI and MI functions for setting a breakpoint. | |
5821 | This function has two major modes of operations, | |
5822 | selected by the PARSE_CONDITION_AND_THREAD parameter. | |
5823 | If non-zero, the function will parse arg, extracting | |
5824 | breakpoint location, address and thread. Otherwise, | |
5825 | ARG is just the location of breakpoint, with condition | |
5826 | and thread specified by the COND_STRING and THREAD | |
5827 | parameters. */ | |
0101ce28 | 5828 | |
98deb0da | 5829 | static void |
a6d9a66e UW |
5830 | break_command_really (struct gdbarch *gdbarch, |
5831 | char *arg, char *cond_string, int thread, | |
60c46647 | 5832 | int parse_condition_and_thread, |
1042e4c0 | 5833 | int tempflag, int hardwareflag, int traceflag, |
60c46647 VP |
5834 | int ignore_count, |
5835 | enum auto_boolean pending_break_support, | |
604133b5 | 5836 | struct breakpoint_ops *ops, |
41447f92 VP |
5837 | int from_tty, |
5838 | int enabled) | |
c3f6f71d | 5839 | { |
71fff37b | 5840 | struct gdb_exception e; |
c3f6f71d | 5841 | struct symtabs_and_lines sals; |
0101ce28 | 5842 | struct symtab_and_line pending_sal; |
0101ce28 JJ |
5843 | char *copy_arg; |
5844 | char *err_msg; | |
c3f6f71d JM |
5845 | char *addr_start = arg; |
5846 | char **addr_string; | |
5847 | struct cleanup *old_chain; | |
80c99de1 | 5848 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 5849 | struct captured_parse_breakpoint_args parse_args; |
05ff989b | 5850 | int i; |
0101ce28 | 5851 | int pending = 0; |
0101ce28 | 5852 | int not_found = 0; |
1042e4c0 | 5853 | enum bptype type_wanted; |
4a306c9a | 5854 | int task = 0; |
c3f6f71d | 5855 | |
c3f6f71d JM |
5856 | sals.sals = NULL; |
5857 | sals.nelts = 0; | |
5858 | addr_string = NULL; | |
c3f6f71d | 5859 | |
0101ce28 JJ |
5860 | parse_args.arg_p = &arg; |
5861 | parse_args.sals_p = &sals; | |
5862 | parse_args.addr_string_p = &addr_string; | |
5863 | parse_args.not_found_ptr = ¬_found; | |
5864 | ||
05ff989b AC |
5865 | e = catch_exception (uiout, do_captured_parse_breakpoint, |
5866 | &parse_args, RETURN_MASK_ALL); | |
0101ce28 JJ |
5867 | |
5868 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 5869 | switch (e.reason) |
0101ce28 | 5870 | { |
05ff989b | 5871 | case RETURN_QUIT: |
98deb0da | 5872 | throw_exception (e); |
05ff989b AC |
5873 | case RETURN_ERROR: |
5874 | switch (e.error) | |
0101ce28 | 5875 | { |
05ff989b | 5876 | case NOT_FOUND_ERROR: |
0101ce28 | 5877 | |
05ff989b AC |
5878 | /* If pending breakpoint support is turned off, throw |
5879 | error. */ | |
fa8d40ab JJ |
5880 | |
5881 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
5882 | throw_exception (e); |
5883 | ||
5884 | exception_print (gdb_stderr, e); | |
fa8d40ab | 5885 | |
05ff989b AC |
5886 | /* If pending breakpoint support is auto query and the user |
5887 | selects no, then simply return the error code. */ | |
059fb39f PM |
5888 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
5889 | && !nquery ("Make breakpoint pending on future shared library load? ")) | |
98deb0da | 5890 | return; |
fa8d40ab | 5891 | |
05ff989b AC |
5892 | /* At this point, either the user was queried about setting |
5893 | a pending breakpoint and selected yes, or pending | |
5894 | breakpoint behavior is on and thus a pending breakpoint | |
5895 | is defaulted on behalf of the user. */ | |
0101ce28 JJ |
5896 | copy_arg = xstrdup (addr_start); |
5897 | addr_string = ©_arg; | |
5898 | sals.nelts = 1; | |
5899 | sals.sals = &pending_sal; | |
5900 | pending_sal.pc = 0; | |
5901 | pending = 1; | |
05ff989b AC |
5902 | break; |
5903 | default: | |
98deb0da | 5904 | throw_exception (e); |
0101ce28 | 5905 | } |
05ff989b AC |
5906 | default: |
5907 | if (!sals.nelts) | |
98deb0da | 5908 | return; |
0101ce28 | 5909 | } |
c3f6f71d JM |
5910 | |
5911 | /* Create a chain of things that always need to be cleaned up. */ | |
5912 | old_chain = make_cleanup (null_cleanup, 0); | |
5913 | ||
0101ce28 JJ |
5914 | if (!pending) |
5915 | { | |
5916 | /* Make sure that all storage allocated to SALS gets freed. */ | |
5917 | make_cleanup (xfree, sals.sals); | |
5918 | ||
5919 | /* Cleanup the addr_string array but not its contents. */ | |
5920 | make_cleanup (xfree, addr_string); | |
5921 | } | |
c3f6f71d | 5922 | |
c3f6f71d JM |
5923 | /* ----------------------------- SNIP ----------------------------- |
5924 | Anything added to the cleanup chain beyond this point is assumed | |
5925 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
5926 | then the memory is not reclaimed. */ |
5927 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d JM |
5928 | |
5929 | /* Mark the contents of the addr_string for cleanup. These go on | |
80c99de1 | 5930 | the bkpt_chain and only occur if the breakpoint create fails. */ |
c3f6f71d JM |
5931 | for (i = 0; i < sals.nelts; i++) |
5932 | { | |
5933 | if (addr_string[i] != NULL) | |
b8c9b27d | 5934 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
5935 | } |
5936 | ||
5937 | /* Resolve all line numbers to PC's and verify that the addresses | |
5938 | are ok for the target. */ | |
0101ce28 JJ |
5939 | if (!pending) |
5940 | breakpoint_sals_to_pc (&sals, addr_start); | |
c3f6f71d | 5941 | |
1042e4c0 SS |
5942 | type_wanted = (traceflag |
5943 | ? bp_tracepoint | |
5944 | : (hardwareflag ? bp_hardware_breakpoint : bp_breakpoint)); | |
5945 | ||
c3f6f71d JM |
5946 | /* Verify that condition can be parsed, before setting any |
5947 | breakpoints. Allocate a separate condition expression for each | |
5948 | breakpoint. */ | |
0101ce28 | 5949 | if (!pending) |
c3f6f71d | 5950 | { |
2f069f6f | 5951 | if (parse_condition_and_thread) |
72b2ff0e VP |
5952 | { |
5953 | /* Here we only parse 'arg' to separate condition | |
5954 | from thread number, so parsing in context of first | |
5955 | sal is OK. When setting the breakpoint we'll | |
5956 | re-parse it in context of each sal. */ | |
5957 | cond_string = NULL; | |
5958 | thread = -1; | |
4a306c9a JB |
5959 | find_condition_and_thread (arg, sals.sals[0].pc, &cond_string, |
5960 | &thread, &task); | |
72b2ff0e VP |
5961 | if (cond_string) |
5962 | make_cleanup (xfree, cond_string); | |
5963 | } | |
2f069f6f | 5964 | else |
72b2ff0e VP |
5965 | { |
5966 | /* Create a private copy of condition string. */ | |
5967 | if (cond_string) | |
5968 | { | |
5969 | cond_string = xstrdup (cond_string); | |
5970 | make_cleanup (xfree, cond_string); | |
5971 | } | |
5972 | } | |
a6d9a66e | 5973 | create_breakpoints (gdbarch, sals, addr_string, cond_string, type_wanted, |
0101ce28 | 5974 | tempflag ? disp_del : disp_donttouch, |
4a306c9a | 5975 | thread, task, ignore_count, ops, from_tty, enabled); |
c906108c | 5976 | } |
0101ce28 JJ |
5977 | else |
5978 | { | |
fe3f5fa8 | 5979 | struct symtab_and_line sal = {0}; |
0101ce28 JJ |
5980 | struct breakpoint *b; |
5981 | ||
0101ce28 JJ |
5982 | make_cleanup (xfree, copy_arg); |
5983 | ||
a6d9a66e | 5984 | b = set_raw_breakpoint_without_location (gdbarch, type_wanted); |
0101ce28 JJ |
5985 | set_breakpoint_count (breakpoint_count + 1); |
5986 | b->number = breakpoint_count; | |
72b2ff0e | 5987 | b->thread = -1; |
018d34a4 | 5988 | b->addr_string = addr_string[0]; |
72b2ff0e | 5989 | b->cond_string = NULL; |
0101ce28 | 5990 | b->ignore_count = ignore_count; |
0101ce28 | 5991 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 5992 | b->condition_not_parsed = 1; |
604133b5 | 5993 | b->ops = ops; |
41447f92 | 5994 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
74960c60 | 5995 | |
0101ce28 JJ |
5996 | mention (b); |
5997 | } | |
5998 | ||
c3f6f71d | 5999 | if (sals.nelts > 1) |
8a3fe4f8 AC |
6000 | warning (_("Multiple breakpoints were set.\n" |
6001 | "Use the \"delete\" command to delete unwanted breakpoints.")); | |
80c99de1 PA |
6002 | /* That's it. Discard the cleanups for data inserted into the |
6003 | breakpoint. */ | |
6004 | discard_cleanups (bkpt_chain); | |
6005 | /* But cleanup everything else. */ | |
c3f6f71d | 6006 | do_cleanups (old_chain); |
217dc9e2 | 6007 | |
80c99de1 | 6008 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
217dc9e2 | 6009 | update_global_location_list (1); |
c3f6f71d | 6010 | } |
c906108c | 6011 | |
72b2ff0e VP |
6012 | /* Set a breakpoint. |
6013 | ARG is a string describing breakpoint address, | |
6014 | condition, and thread. | |
6015 | FLAG specifies if a breakpoint is hardware on, | |
6016 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
6017 | and BP_TEMPFLAG. */ | |
6018 | ||
98deb0da | 6019 | static void |
72b2ff0e | 6020 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 6021 | { |
72b2ff0e VP |
6022 | int hardwareflag = flag & BP_HARDWAREFLAG; |
6023 | int tempflag = flag & BP_TEMPFLAG; | |
c3f6f71d | 6024 | |
a6d9a66e UW |
6025 | break_command_really (get_current_arch (), |
6026 | arg, | |
98deb0da | 6027 | NULL, 0, 1 /* parse arg */, |
1042e4c0 | 6028 | tempflag, hardwareflag, 0 /* traceflag */, |
98deb0da | 6029 | 0 /* Ignore count */, |
604133b5 AR |
6030 | pending_break_support, |
6031 | NULL /* breakpoint_ops */, | |
41447f92 VP |
6032 | from_tty, |
6033 | 1 /* enabled */); | |
c906108c SS |
6034 | } |
6035 | ||
72b2ff0e | 6036 | |
98deb0da | 6037 | void |
a6d9a66e UW |
6038 | set_breakpoint (struct gdbarch *gdbarch, |
6039 | char *address, char *condition, | |
c3f6f71d | 6040 | int hardwareflag, int tempflag, |
ce43223b | 6041 | int thread, int ignore_count, |
41447f92 | 6042 | int pending, int enabled) |
c3f6f71d | 6043 | { |
a6d9a66e UW |
6044 | break_command_really (gdbarch, |
6045 | address, condition, thread, | |
98deb0da | 6046 | 0 /* condition and thread are valid. */, |
1042e4c0 | 6047 | tempflag, hardwareflag, 0 /* traceflag */, |
98deb0da VP |
6048 | ignore_count, |
6049 | pending | |
6050 | ? AUTO_BOOLEAN_TRUE : AUTO_BOOLEAN_FALSE, | |
41447f92 | 6051 | NULL, 0, enabled); |
c3f6f71d JM |
6052 | } |
6053 | ||
6a048695 JB |
6054 | /* Adjust SAL to the first instruction past the function prologue. |
6055 | The end of the prologue is determined using the line table from | |
3daf8fe5 JG |
6056 | the debugging information. explicit_pc and explicit_line are |
6057 | not modified. | |
6a048695 JB |
6058 | |
6059 | If SAL is already past the prologue, then do nothing. */ | |
6060 | ||
6061 | static void | |
6062 | skip_prologue_sal (struct symtab_and_line *sal) | |
6063 | { | |
6064 | struct symbol *sym = find_pc_function (sal->pc); | |
6065 | struct symtab_and_line start_sal; | |
6066 | ||
6067 | if (sym == NULL) | |
6068 | return; | |
6069 | ||
6070 | start_sal = find_function_start_sal (sym, 1); | |
6071 | if (sal->pc < start_sal.pc) | |
3daf8fe5 JG |
6072 | { |
6073 | start_sal.explicit_line = sal->explicit_line; | |
6074 | start_sal.explicit_pc = sal->explicit_pc; | |
6075 | *sal = start_sal; | |
6076 | } | |
6a048695 | 6077 | } |
c3f6f71d | 6078 | |
c906108c SS |
6079 | /* Helper function for break_command_1 and disassemble_command. */ |
6080 | ||
6081 | void | |
fba45db2 | 6082 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
6083 | { |
6084 | CORE_ADDR pc; | |
6085 | ||
6086 | if (sal->pc == 0 && sal->symtab != NULL) | |
6087 | { | |
6088 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 6089 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
6090 | sal->line, sal->symtab->filename); |
6091 | sal->pc = pc; | |
6a048695 JB |
6092 | |
6093 | /* If this SAL corresponds to a breakpoint inserted using | |
6094 | a line number, then skip the function prologue if necessary. */ | |
6095 | if (sal->explicit_line) | |
56ef84b1 TT |
6096 | { |
6097 | /* Preserve the original line number. */ | |
6098 | int saved_line = sal->line; | |
6099 | skip_prologue_sal (sal); | |
6100 | sal->line = saved_line; | |
6101 | } | |
c906108c SS |
6102 | } |
6103 | ||
6104 | if (sal->section == 0 && sal->symtab != NULL) | |
6105 | { | |
6106 | struct blockvector *bv; | |
c5aa993b JM |
6107 | struct block *b; |
6108 | struct symbol *sym; | |
c906108c | 6109 | |
801e3a5b | 6110 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
6111 | if (bv != NULL) |
6112 | { | |
7f0df278 | 6113 | sym = block_linkage_function (b); |
c906108c SS |
6114 | if (sym != NULL) |
6115 | { | |
6116 | fixup_symbol_section (sym, sal->symtab->objfile); | |
714835d5 | 6117 | sal->section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
6118 | } |
6119 | else | |
6120 | { | |
6121 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
6122 | have to look harder. This case can be executed if we have |
6123 | line numbers but no functions (as can happen in assembly | |
6124 | source). */ | |
c906108c | 6125 | |
c5aa993b | 6126 | struct minimal_symbol *msym; |
c906108c SS |
6127 | |
6128 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
6129 | if (msym) | |
714835d5 | 6130 | sal->section = SYMBOL_OBJ_SECTION (msym); |
c906108c SS |
6131 | } |
6132 | } | |
6133 | } | |
6134 | } | |
6135 | ||
6136 | void | |
fba45db2 | 6137 | break_command (char *arg, int from_tty) |
c906108c | 6138 | { |
db107f19 | 6139 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
6140 | } |
6141 | ||
c906108c | 6142 | void |
fba45db2 | 6143 | tbreak_command (char *arg, int from_tty) |
c906108c | 6144 | { |
db107f19 | 6145 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
6146 | } |
6147 | ||
c906108c | 6148 | static void |
fba45db2 | 6149 | hbreak_command (char *arg, int from_tty) |
c906108c | 6150 | { |
db107f19 | 6151 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
6152 | } |
6153 | ||
6154 | static void | |
fba45db2 | 6155 | thbreak_command (char *arg, int from_tty) |
c906108c | 6156 | { |
db107f19 | 6157 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
6158 | } |
6159 | ||
6160 | static void | |
fba45db2 | 6161 | stop_command (char *arg, int from_tty) |
c906108c | 6162 | { |
a3f17187 | 6163 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 6164 | Usage: stop in <function | address>\n\ |
a3f17187 | 6165 | stop at <line>\n")); |
c906108c SS |
6166 | } |
6167 | ||
6168 | static void | |
fba45db2 | 6169 | stopin_command (char *arg, int from_tty) |
c906108c SS |
6170 | { |
6171 | int badInput = 0; | |
6172 | ||
c5aa993b | 6173 | if (arg == (char *) NULL) |
c906108c SS |
6174 | badInput = 1; |
6175 | else if (*arg != '*') | |
6176 | { | |
6177 | char *argptr = arg; | |
6178 | int hasColon = 0; | |
6179 | ||
53a5351d JM |
6180 | /* look for a ':'. If this is a line number specification, then |
6181 | say it is bad, otherwise, it should be an address or | |
6182 | function/method name */ | |
c906108c | 6183 | while (*argptr && !hasColon) |
c5aa993b JM |
6184 | { |
6185 | hasColon = (*argptr == ':'); | |
6186 | argptr++; | |
6187 | } | |
c906108c SS |
6188 | |
6189 | if (hasColon) | |
c5aa993b | 6190 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 6191 | else |
c5aa993b | 6192 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
6193 | } |
6194 | ||
6195 | if (badInput) | |
a3f17187 | 6196 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 6197 | else |
db107f19 | 6198 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
6199 | } |
6200 | ||
6201 | static void | |
fba45db2 | 6202 | stopat_command (char *arg, int from_tty) |
c906108c SS |
6203 | { |
6204 | int badInput = 0; | |
6205 | ||
c5aa993b | 6206 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
6207 | badInput = 1; |
6208 | else | |
6209 | { | |
6210 | char *argptr = arg; | |
6211 | int hasColon = 0; | |
6212 | ||
6213 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 6214 | it is probably a line number. */ |
c906108c | 6215 | while (*argptr && !hasColon) |
c5aa993b JM |
6216 | { |
6217 | hasColon = (*argptr == ':'); | |
6218 | argptr++; | |
6219 | } | |
c906108c SS |
6220 | |
6221 | if (hasColon) | |
c5aa993b | 6222 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 6223 | else |
c5aa993b | 6224 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
6225 | } |
6226 | ||
6227 | if (badInput) | |
a3f17187 | 6228 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 6229 | else |
db107f19 | 6230 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
6231 | } |
6232 | ||
53a5351d JM |
6233 | /* accessflag: hw_write: watch write, |
6234 | hw_read: watch read, | |
6235 | hw_access: watch access (read or write) */ | |
c906108c | 6236 | static void |
fba45db2 | 6237 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c | 6238 | { |
a6d9a66e | 6239 | struct gdbarch *gdbarch = get_current_arch (); |
d983da9c | 6240 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c SS |
6241 | struct symtab_and_line sal; |
6242 | struct expression *exp; | |
6243 | struct block *exp_valid_block; | |
6244 | struct value *val, *mark; | |
6245 | struct frame_info *frame; | |
c906108c SS |
6246 | char *exp_start = NULL; |
6247 | char *exp_end = NULL; | |
37e4754d | 6248 | char *tok, *id_tok_start, *end_tok; |
c906108c SS |
6249 | int toklen; |
6250 | char *cond_start = NULL; | |
6251 | char *cond_end = NULL; | |
6252 | struct expression *cond = NULL; | |
6253 | int i, other_type_used, target_resources_ok = 0; | |
6254 | enum bptype bp_type; | |
6255 | int mem_cnt = 0; | |
37e4754d | 6256 | int thread = -1; |
c906108c | 6257 | |
fe39c653 | 6258 | init_sal (&sal); /* initialize to zeroes */ |
c5aa993b | 6259 | |
37e4754d LM |
6260 | /* Make sure that we actually have parameters to parse. */ |
6261 | if (arg != NULL && arg[0] != '\0') | |
6262 | { | |
6263 | toklen = strlen (arg); /* Size of argument list. */ | |
6264 | ||
6265 | /* Points tok to the end of the argument list. */ | |
6266 | tok = arg + toklen - 1; | |
6267 | ||
6268 | /* Go backwards in the parameters list. Skip the last parameter. | |
6269 | If we're expecting a 'thread <thread_num>' parameter, this should | |
6270 | be the thread identifier. */ | |
6271 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
6272 | tok--; | |
6273 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
6274 | tok--; | |
6275 | ||
6276 | /* Points end_tok to the beginning of the last token. */ | |
6277 | id_tok_start = tok + 1; | |
6278 | ||
6279 | /* Go backwards in the parameters list. Skip one more parameter. | |
6280 | If we're expecting a 'thread <thread_num>' parameter, we should | |
6281 | reach a "thread" token. */ | |
6282 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
6283 | tok--; | |
6284 | ||
6285 | end_tok = tok; | |
6286 | ||
6287 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
6288 | tok--; | |
6289 | ||
6290 | /* Move the pointer forward to skip the whitespace and | |
6291 | calculate the length of the token. */ | |
6292 | tok++; | |
6293 | toklen = end_tok - tok; | |
6294 | ||
6295 | if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
6296 | { | |
6297 | /* At this point we've found a "thread" token, which means | |
6298 | the user is trying to set a watchpoint that triggers | |
6299 | only in a specific thread. */ | |
6300 | char *endp; | |
6301 | ||
6302 | /* Extract the thread ID from the next token. */ | |
6303 | thread = strtol (id_tok_start, &endp, 0); | |
6304 | ||
6305 | /* Check if the user provided a valid numeric value for the | |
6306 | thread ID. */ | |
6307 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
6308 | error (_("Invalid thread ID specification %s."), id_tok_start); | |
6309 | ||
6310 | /* Check if the thread actually exists. */ | |
6311 | if (!valid_thread_id (thread)) | |
6312 | error (_("Unknown thread %d."), thread); | |
6313 | ||
6314 | /* Truncate the string and get rid of the thread <thread_num> | |
6315 | parameter before the parameter list is parsed by the | |
6316 | evaluate_expression() function. */ | |
6317 | *tok = '\0'; | |
6318 | } | |
6319 | } | |
6320 | ||
6321 | /* Parse the rest of the arguments. */ | |
c906108c SS |
6322 | innermost_block = NULL; |
6323 | exp_start = arg; | |
6324 | exp = parse_exp_1 (&arg, 0, 0); | |
6325 | exp_end = arg; | |
fa8a61dc TT |
6326 | /* Remove trailing whitespace from the expression before saving it. |
6327 | This makes the eventual display of the expression string a bit | |
6328 | prettier. */ | |
6329 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
6330 | --exp_end; | |
6331 | ||
c906108c SS |
6332 | exp_valid_block = innermost_block; |
6333 | mark = value_mark (); | |
fa4727a6 DJ |
6334 | fetch_watchpoint_value (exp, &val, NULL, NULL); |
6335 | if (val != NULL) | |
6336 | release_value (val); | |
c906108c SS |
6337 | |
6338 | tok = arg; | |
6339 | while (*tok == ' ' || *tok == '\t') | |
6340 | tok++; | |
6341 | end_tok = tok; | |
6342 | ||
6343 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
6344 | end_tok++; | |
6345 | ||
6346 | toklen = end_tok - tok; | |
6347 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
6348 | { | |
6349 | tok = cond_start = end_tok + 1; | |
6350 | cond = parse_exp_1 (&tok, 0, 0); | |
6351 | cond_end = tok; | |
6352 | } | |
6353 | if (*tok) | |
8a3fe4f8 | 6354 | error (_("Junk at end of command.")); |
c906108c | 6355 | |
53a5351d | 6356 | if (accessflag == hw_read) |
c5aa993b | 6357 | bp_type = bp_read_watchpoint; |
53a5351d | 6358 | else if (accessflag == hw_access) |
c5aa993b JM |
6359 | bp_type = bp_access_watchpoint; |
6360 | else | |
6361 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
6362 | |
6363 | mem_cnt = can_use_hardware_watchpoint (val); | |
6364 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
8a3fe4f8 | 6365 | error (_("Expression cannot be implemented with read/access watchpoint.")); |
c5aa993b JM |
6366 | if (mem_cnt != 0) |
6367 | { | |
6368 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d | 6369 | target_resources_ok = |
d92524f1 | 6370 | target_can_use_hardware_watchpoint (bp_type, i + mem_cnt, |
53a5351d | 6371 | other_type_used); |
c5aa993b | 6372 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 6373 | error (_("Target does not support this type of hardware watchpoint.")); |
53a5351d | 6374 | |
c5aa993b | 6375 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 6376 | error (_("Target can only support one kind of HW watchpoint at a time.")); |
c5aa993b | 6377 | } |
c906108c | 6378 | |
4d28f7a8 KB |
6379 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
6380 | watchpoint could not be set. */ | |
6381 | if (!mem_cnt || target_resources_ok <= 0) | |
6382 | bp_type = bp_watchpoint; | |
6383 | ||
d983da9c | 6384 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
6385 | |
6386 | /* If the expression is "local", then set up a "watchpoint scope" | |
6387 | breakpoint at the point where we've left the scope of the watchpoint | |
6388 | expression. Create the scope breakpoint before the watchpoint, so | |
6389 | that we will encounter it first in bpstat_stop_status. */ | |
edb3359d | 6390 | if (innermost_block && frame) |
d983da9c | 6391 | { |
edb3359d DJ |
6392 | if (frame_id_p (frame_unwind_caller_id (frame))) |
6393 | { | |
6394 | scope_breakpoint | |
a6d9a66e UW |
6395 | = create_internal_breakpoint (frame_unwind_caller_arch (frame), |
6396 | frame_unwind_caller_pc (frame), | |
edb3359d | 6397 | bp_watchpoint_scope); |
d983da9c | 6398 | |
edb3359d | 6399 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 6400 | |
edb3359d DJ |
6401 | /* Automatically delete the breakpoint when it hits. */ |
6402 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 6403 | |
edb3359d DJ |
6404 | /* Only break in the proper frame (help with recursion). */ |
6405 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 6406 | |
edb3359d | 6407 | /* Set the address at which we will stop. */ |
a6d9a66e UW |
6408 | scope_breakpoint->loc->gdbarch |
6409 | = frame_unwind_caller_arch (frame); | |
edb3359d DJ |
6410 | scope_breakpoint->loc->requested_address |
6411 | = frame_unwind_caller_pc (frame); | |
6412 | scope_breakpoint->loc->address | |
a6d9a66e UW |
6413 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
6414 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
6415 | scope_breakpoint->type); |
6416 | } | |
d983da9c DJ |
6417 | } |
6418 | ||
c906108c | 6419 | /* Now set up the breakpoint. */ |
a6d9a66e | 6420 | b = set_raw_breakpoint (gdbarch, sal, bp_type); |
c906108c SS |
6421 | set_breakpoint_count (breakpoint_count + 1); |
6422 | b->number = breakpoint_count; | |
37e4754d | 6423 | b->thread = thread; |
b5de0fa7 | 6424 | b->disposition = disp_donttouch; |
c906108c SS |
6425 | b->exp = exp; |
6426 | b->exp_valid_block = exp_valid_block; | |
6427 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
6428 | b->val = val; | |
fa4727a6 | 6429 | b->val_valid = 1; |
511a6cd4 | 6430 | b->loc->cond = cond; |
c906108c SS |
6431 | if (cond_start) |
6432 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
6433 | else | |
6434 | b->cond_string = 0; | |
c5aa993b | 6435 | |
c906108c | 6436 | if (frame) |
d983da9c | 6437 | b->watchpoint_frame = get_frame_id (frame); |
c906108c | 6438 | else |
35a487f1 | 6439 | b->watchpoint_frame = null_frame_id; |
c906108c | 6440 | |
d983da9c | 6441 | if (scope_breakpoint != NULL) |
c906108c | 6442 | { |
d983da9c DJ |
6443 | /* The scope breakpoint is related to the watchpoint. We will |
6444 | need to act on them together. */ | |
6445 | b->related_breakpoint = scope_breakpoint; | |
6446 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 6447 | } |
d983da9c | 6448 | |
c906108c SS |
6449 | value_free_to_mark (mark); |
6450 | mention (b); | |
b60e7edf | 6451 | update_global_location_list (1); |
c906108c SS |
6452 | } |
6453 | ||
6454 | /* Return count of locations need to be watched and can be handled | |
6455 | in hardware. If the watchpoint can not be handled | |
6456 | in hardware return zero. */ | |
6457 | ||
c906108c | 6458 | static int |
fba45db2 | 6459 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
6460 | { |
6461 | int found_memory_cnt = 0; | |
2e70b7b9 | 6462 | struct value *head = v; |
c906108c SS |
6463 | |
6464 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 6465 | if (!can_use_hw_watchpoints) |
c906108c | 6466 | return 0; |
c5aa993b | 6467 | |
5c44784c JM |
6468 | /* Make sure that the value of the expression depends only upon |
6469 | memory contents, and values computed from them within GDB. If we | |
6470 | find any register references or function calls, we can't use a | |
6471 | hardware watchpoint. | |
6472 | ||
6473 | The idea here is that evaluating an expression generates a series | |
6474 | of values, one holding the value of every subexpression. (The | |
6475 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
6476 | a*b+c.) GDB's values hold almost enough information to establish | |
6477 | the criteria given above --- they identify memory lvalues, | |
6478 | register lvalues, computed values, etcetera. So we can evaluate | |
6479 | the expression, and then scan the chain of values that leaves | |
6480 | behind to decide whether we can detect any possible change to the | |
6481 | expression's final value using only hardware watchpoints. | |
6482 | ||
6483 | However, I don't think that the values returned by inferior | |
6484 | function calls are special in any way. So this function may not | |
6485 | notice that an expression involving an inferior function call | |
6486 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 6487 | for (; v; v = value_next (v)) |
c906108c | 6488 | { |
5c44784c | 6489 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 6490 | { |
d69fe07e | 6491 | if (value_lazy (v)) |
5c44784c JM |
6492 | /* A lazy memory lvalue is one that GDB never needed to fetch; |
6493 | we either just used its address (e.g., `a' in `a.b') or | |
6494 | we never needed it at all (e.g., `a' in `a,b'). */ | |
6495 | ; | |
53a5351d | 6496 | else |
5c44784c JM |
6497 | { |
6498 | /* Ahh, memory we actually used! Check if we can cover | |
6499 | it with hardware watchpoints. */ | |
df407dfe | 6500 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
6501 | |
6502 | /* We only watch structs and arrays if user asked for it | |
6503 | explicitly, never if they just happen to appear in a | |
6504 | middle of some value chain. */ | |
6505 | if (v == head | |
6506 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
6507 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
6508 | { | |
42ae5230 | 6509 | CORE_ADDR vaddr = value_address (v); |
df407dfe | 6510 | int len = TYPE_LENGTH (value_type (v)); |
2e70b7b9 | 6511 | |
d92524f1 | 6512 | if (!target_region_ok_for_hw_watchpoint (vaddr, len)) |
2e70b7b9 MS |
6513 | return 0; |
6514 | else | |
6515 | found_memory_cnt++; | |
6516 | } | |
5c44784c | 6517 | } |
c5aa993b | 6518 | } |
5086187c AC |
6519 | else if (VALUE_LVAL (v) != not_lval |
6520 | && deprecated_value_modifiable (v) == 0) | |
53a5351d | 6521 | return 0; /* ??? What does this represent? */ |
5086187c | 6522 | else if (VALUE_LVAL (v) == lval_register) |
53a5351d | 6523 | return 0; /* cannot watch a register with a HW watchpoint */ |
c906108c SS |
6524 | } |
6525 | ||
6526 | /* The expression itself looks suitable for using a hardware | |
6527 | watchpoint, but give the target machine a chance to reject it. */ | |
6528 | return found_memory_cnt; | |
6529 | } | |
6530 | ||
8b93c638 | 6531 | void |
fba45db2 | 6532 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6533 | { |
6534 | watch_command (arg, from_tty); | |
6535 | } | |
8926118c | 6536 | |
c5aa993b | 6537 | static void |
fba45db2 | 6538 | watch_command (char *arg, int from_tty) |
c906108c | 6539 | { |
53a5351d | 6540 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
6541 | } |
6542 | ||
8b93c638 | 6543 | void |
fba45db2 | 6544 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6545 | { |
6546 | rwatch_command (arg, from_tty); | |
6547 | } | |
8926118c | 6548 | |
c5aa993b | 6549 | static void |
fba45db2 | 6550 | rwatch_command (char *arg, int from_tty) |
c906108c | 6551 | { |
53a5351d | 6552 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
6553 | } |
6554 | ||
8b93c638 | 6555 | void |
fba45db2 | 6556 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6557 | { |
6558 | awatch_command (arg, from_tty); | |
6559 | } | |
8926118c | 6560 | |
c5aa993b | 6561 | static void |
fba45db2 | 6562 | awatch_command (char *arg, int from_tty) |
c906108c | 6563 | { |
53a5351d | 6564 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 6565 | } |
c906108c | 6566 | \f |
c5aa993b | 6567 | |
43ff13b4 | 6568 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
6569 | because it uses the mechanisms of breakpoints. */ |
6570 | ||
bfec99b2 PA |
6571 | struct until_break_command_continuation_args |
6572 | { | |
6573 | struct breakpoint *breakpoint; | |
6574 | struct breakpoint *breakpoint2; | |
6575 | }; | |
6576 | ||
43ff13b4 JM |
6577 | /* This function is called by fetch_inferior_event via the |
6578 | cmd_continuation pointer, to complete the until command. It takes | |
6579 | care of cleaning up the temporary breakpoints set up by the until | |
6580 | command. */ | |
c2c6d25f | 6581 | static void |
604ead4a | 6582 | until_break_command_continuation (void *arg) |
43ff13b4 | 6583 | { |
bfec99b2 PA |
6584 | struct until_break_command_continuation_args *a = arg; |
6585 | ||
6586 | delete_breakpoint (a->breakpoint); | |
6587 | if (a->breakpoint2) | |
6588 | delete_breakpoint (a->breakpoint2); | |
43ff13b4 JM |
6589 | } |
6590 | ||
c906108c | 6591 | void |
ae66c1fc | 6592 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
6593 | { |
6594 | struct symtabs_and_lines sals; | |
6595 | struct symtab_and_line sal; | |
206415a3 | 6596 | struct frame_info *frame = get_selected_frame (NULL); |
c906108c | 6597 | struct breakpoint *breakpoint; |
f107f563 | 6598 | struct breakpoint *breakpoint2 = NULL; |
c906108c SS |
6599 | struct cleanup *old_chain; |
6600 | ||
6601 | clear_proceed_status (); | |
6602 | ||
6603 | /* Set a breakpoint where the user wants it and at return from | |
6604 | this function */ | |
c5aa993b | 6605 | |
c906108c SS |
6606 | if (default_breakpoint_valid) |
6607 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 6608 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 6609 | else |
53a5351d | 6610 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 6611 | 0, (char ***) NULL, NULL); |
c5aa993b | 6612 | |
c906108c | 6613 | if (sals.nelts != 1) |
8a3fe4f8 | 6614 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 6615 | |
c906108c | 6616 | sal = sals.sals[0]; |
b8c9b27d | 6617 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 6618 | |
c906108c | 6619 | if (*arg) |
8a3fe4f8 | 6620 | error (_("Junk at end of arguments.")); |
c5aa993b | 6621 | |
c906108c | 6622 | resolve_sal_pc (&sal); |
c5aa993b | 6623 | |
ae66c1fc EZ |
6624 | if (anywhere) |
6625 | /* If the user told us to continue until a specified location, | |
6626 | we don't specify a frame at which we need to stop. */ | |
a6d9a66e UW |
6627 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
6628 | null_frame_id, bp_until); | |
ae66c1fc | 6629 | else |
edb3359d | 6630 | /* Otherwise, specify the selected frame, because we want to stop only |
ae66c1fc | 6631 | at the very same frame. */ |
a6d9a66e UW |
6632 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
6633 | get_stack_frame_id (frame), | |
ae66c1fc | 6634 | bp_until); |
c5aa993b | 6635 | |
f107f563 | 6636 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
c906108c | 6637 | |
ae66c1fc EZ |
6638 | /* Keep within the current frame, or in frames called by the current |
6639 | one. */ | |
edb3359d DJ |
6640 | |
6641 | if (frame_id_p (frame_unwind_caller_id (frame))) | |
c906108c | 6642 | { |
edb3359d DJ |
6643 | sal = find_pc_line (frame_unwind_caller_pc (frame), 0); |
6644 | sal.pc = frame_unwind_caller_pc (frame); | |
a6d9a66e UW |
6645 | breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame), |
6646 | sal, | |
edb3359d | 6647 | frame_unwind_caller_id (frame), |
f107f563 VP |
6648 | bp_until); |
6649 | make_cleanup_delete_breakpoint (breakpoint2); | |
c906108c | 6650 | } |
c5aa993b | 6651 | |
c906108c | 6652 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
f107f563 VP |
6653 | |
6654 | /* If we are running asynchronously, and proceed call above has actually | |
6655 | managed to start the target, arrange for breakpoints to be | |
6656 | deleted when the target stops. Otherwise, we're already stopped and | |
6657 | delete breakpoints via cleanup chain. */ | |
6658 | ||
8ea051c5 | 6659 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 6660 | { |
bfec99b2 PA |
6661 | struct until_break_command_continuation_args *args; |
6662 | args = xmalloc (sizeof (*args)); | |
f107f563 | 6663 | |
bfec99b2 PA |
6664 | args->breakpoint = breakpoint; |
6665 | args->breakpoint2 = breakpoint2; | |
f107f563 VP |
6666 | |
6667 | discard_cleanups (old_chain); | |
95e54da7 PA |
6668 | add_continuation (inferior_thread (), |
6669 | until_break_command_continuation, args, | |
604ead4a | 6670 | xfree); |
f107f563 VP |
6671 | } |
6672 | else | |
c5aa993b | 6673 | do_cleanups (old_chain); |
c906108c | 6674 | } |
ae66c1fc | 6675 | |
c906108c | 6676 | static void |
fba45db2 | 6677 | ep_skip_leading_whitespace (char **s) |
c906108c | 6678 | { |
c5aa993b JM |
6679 | if ((s == NULL) || (*s == NULL)) |
6680 | return; | |
6681 | while (isspace (**s)) | |
6682 | *s += 1; | |
c906108c | 6683 | } |
c5aa993b | 6684 | |
c906108c SS |
6685 | /* This function attempts to parse an optional "if <cond>" clause |
6686 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 6687 | |
c906108c SS |
6688 | Else, it returns a pointer to the condition string. (It does not |
6689 | attempt to evaluate the string against a particular block.) And, | |
6690 | it updates arg to point to the first character following the parsed | |
6691 | if clause in the arg string. */ | |
53a5351d | 6692 | |
c906108c | 6693 | static char * |
fba45db2 | 6694 | ep_parse_optional_if_clause (char **arg) |
c906108c | 6695 | { |
c5aa993b JM |
6696 | char *cond_string; |
6697 | ||
6698 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 6699 | return NULL; |
c5aa993b | 6700 | |
c906108c SS |
6701 | /* Skip the "if" keyword. */ |
6702 | (*arg) += 2; | |
c5aa993b | 6703 | |
c906108c SS |
6704 | /* Skip any extra leading whitespace, and record the start of the |
6705 | condition string. */ | |
6706 | ep_skip_leading_whitespace (arg); | |
6707 | cond_string = *arg; | |
c5aa993b | 6708 | |
c906108c SS |
6709 | /* Assume that the condition occupies the remainder of the arg string. */ |
6710 | (*arg) += strlen (cond_string); | |
c5aa993b | 6711 | |
c906108c SS |
6712 | return cond_string; |
6713 | } | |
c5aa993b | 6714 | |
c906108c SS |
6715 | /* This function attempts to parse an optional filename from the arg |
6716 | string. If one is not found, it returns NULL. | |
c5aa993b | 6717 | |
c906108c SS |
6718 | Else, it returns a pointer to the parsed filename. (This function |
6719 | makes no attempt to verify that a file of that name exists, or is | |
6720 | accessible.) And, it updates arg to point to the first character | |
6721 | following the parsed filename in the arg string. | |
c5aa993b | 6722 | |
c906108c SS |
6723 | Note that clients needing to preserve the returned filename for |
6724 | future access should copy it to their own buffers. */ | |
6725 | static char * | |
fba45db2 | 6726 | ep_parse_optional_filename (char **arg) |
c906108c | 6727 | { |
c5aa993b JM |
6728 | static char filename[1024]; |
6729 | char *arg_p = *arg; | |
6730 | int i; | |
6731 | char c; | |
6732 | ||
c906108c SS |
6733 | if ((*arg_p == '\0') || isspace (*arg_p)) |
6734 | return NULL; | |
c5aa993b JM |
6735 | |
6736 | for (i = 0;; i++) | |
c906108c SS |
6737 | { |
6738 | c = *arg_p; | |
6739 | if (isspace (c)) | |
c5aa993b | 6740 | c = '\0'; |
c906108c SS |
6741 | filename[i] = c; |
6742 | if (c == '\0') | |
c5aa993b | 6743 | break; |
c906108c SS |
6744 | arg_p++; |
6745 | } | |
6746 | *arg = arg_p; | |
c5aa993b | 6747 | |
c906108c SS |
6748 | return filename; |
6749 | } | |
c5aa993b | 6750 | |
c906108c SS |
6751 | /* Commands to deal with catching events, such as signals, exceptions, |
6752 | process start/exit, etc. */ | |
c5aa993b JM |
6753 | |
6754 | typedef enum | |
6755 | { | |
44feb3ce TT |
6756 | catch_fork_temporary, catch_vfork_temporary, |
6757 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
6758 | } |
6759 | catch_fork_kind; | |
6760 | ||
c906108c | 6761 | static void |
44feb3ce | 6762 | catch_fork_command_1 (char *arg, int from_tty, struct cmd_list_element *command) |
c906108c | 6763 | { |
a6d9a66e | 6764 | struct gdbarch *gdbarch = get_current_arch (); |
c5aa993b | 6765 | char *cond_string = NULL; |
44feb3ce TT |
6766 | catch_fork_kind fork_kind; |
6767 | int tempflag; | |
6768 | ||
6769 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
6770 | tempflag = (fork_kind == catch_fork_temporary | |
6771 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 6772 | |
44feb3ce TT |
6773 | if (!arg) |
6774 | arg = ""; | |
c906108c | 6775 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6776 | |
c906108c | 6777 | /* The allowed syntax is: |
c5aa993b JM |
6778 | catch [v]fork |
6779 | catch [v]fork if <cond> | |
6780 | ||
c906108c SS |
6781 | First, check if there's an if clause. */ |
6782 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6783 | |
c906108c | 6784 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6785 | error (_("Junk at end of arguments.")); |
c5aa993b | 6786 | |
c906108c SS |
6787 | /* If this target supports it, create a fork or vfork catchpoint |
6788 | and enable reporting of such events. */ | |
c5aa993b JM |
6789 | switch (fork_kind) |
6790 | { | |
44feb3ce TT |
6791 | case catch_fork_temporary: |
6792 | case catch_fork_permanent: | |
a6d9a66e | 6793 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 6794 | &catch_fork_breakpoint_ops); |
c906108c | 6795 | break; |
44feb3ce TT |
6796 | case catch_vfork_temporary: |
6797 | case catch_vfork_permanent: | |
a6d9a66e | 6798 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 6799 | &catch_vfork_breakpoint_ops); |
c906108c | 6800 | break; |
c5aa993b | 6801 | default: |
8a3fe4f8 | 6802 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 6803 | break; |
c5aa993b | 6804 | } |
c906108c SS |
6805 | } |
6806 | ||
6807 | static void | |
44feb3ce | 6808 | catch_exec_command_1 (char *arg, int from_tty, struct cmd_list_element *command) |
c906108c | 6809 | { |
a6d9a66e | 6810 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 6811 | int tempflag; |
c5aa993b | 6812 | char *cond_string = NULL; |
c906108c | 6813 | |
44feb3ce TT |
6814 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
6815 | ||
6816 | if (!arg) | |
6817 | arg = ""; | |
c906108c SS |
6818 | ep_skip_leading_whitespace (&arg); |
6819 | ||
6820 | /* The allowed syntax is: | |
c5aa993b JM |
6821 | catch exec |
6822 | catch exec if <cond> | |
c906108c SS |
6823 | |
6824 | First, check if there's an if clause. */ | |
6825 | cond_string = ep_parse_optional_if_clause (&arg); | |
6826 | ||
6827 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6828 | error (_("Junk at end of arguments.")); |
c906108c SS |
6829 | |
6830 | /* If this target supports it, create an exec catchpoint | |
6831 | and enable reporting of such events. */ | |
a6d9a66e UW |
6832 | create_catchpoint (gdbarch, tempflag, cond_string, |
6833 | &catch_exec_breakpoint_ops); | |
c906108c | 6834 | } |
c5aa993b | 6835 | |
3086aeae DJ |
6836 | static enum print_stop_action |
6837 | print_exception_catchpoint (struct breakpoint *b) | |
6838 | { | |
ade92717 | 6839 | int bp_temp, bp_throw; |
3086aeae | 6840 | |
ade92717 | 6841 | annotate_catchpoint (b->number); |
3086aeae | 6842 | |
ade92717 AR |
6843 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
6844 | if (b->loc->address != b->loc->requested_address) | |
6845 | breakpoint_adjustment_warning (b->loc->requested_address, | |
6846 | b->loc->address, | |
6847 | b->number, 1); | |
df2b6d2d | 6848 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
6849 | ui_out_text (uiout, |
6850 | bp_temp ? "Temporary catchpoint " | |
6851 | : "Catchpoint "); | |
6852 | if (!ui_out_is_mi_like_p (uiout)) | |
6853 | ui_out_field_int (uiout, "bkptno", b->number); | |
6854 | ui_out_text (uiout, | |
c0b37c48 AR |
6855 | bp_throw ? " (exception thrown), " |
6856 | : " (exception caught), "); | |
ade92717 AR |
6857 | if (ui_out_is_mi_like_p (uiout)) |
6858 | { | |
6859 | ui_out_field_string (uiout, "reason", | |
6860 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
6861 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
6862 | ui_out_field_int (uiout, "bkptno", b->number); | |
6863 | } | |
3086aeae DJ |
6864 | return PRINT_SRC_AND_LOC; |
6865 | } | |
6866 | ||
6867 | static void | |
a6d9a66e | 6868 | print_one_exception_catchpoint (struct breakpoint *b, struct bp_location **last_loc) |
3086aeae | 6869 | { |
79a45b7d TT |
6870 | struct value_print_options opts; |
6871 | get_user_print_options (&opts); | |
6872 | if (opts.addressprint) | |
3086aeae DJ |
6873 | { |
6874 | annotate_field (4); | |
604133b5 AR |
6875 | if (b->loc == NULL || b->loc->shlib_disabled) |
6876 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
6877 | else | |
5af949e3 UW |
6878 | ui_out_field_core_addr (uiout, "addr", |
6879 | b->loc->gdbarch, b->loc->address); | |
3086aeae DJ |
6880 | } |
6881 | annotate_field (5); | |
604133b5 | 6882 | if (b->loc) |
a6d9a66e | 6883 | *last_loc = b->loc; |
3086aeae DJ |
6884 | if (strstr (b->addr_string, "throw") != NULL) |
6885 | ui_out_field_string (uiout, "what", "exception throw"); | |
6886 | else | |
6887 | ui_out_field_string (uiout, "what", "exception catch"); | |
6888 | } | |
6889 | ||
6890 | static void | |
6891 | print_mention_exception_catchpoint (struct breakpoint *b) | |
6892 | { | |
ade92717 AR |
6893 | int bp_temp; |
6894 | int bp_throw; | |
6895 | ||
df2b6d2d | 6896 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
6897 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
6898 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
6899 | : _("Catchpoint ")); | |
6900 | ui_out_field_int (uiout, "bkptno", b->number); | |
6901 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
6902 | : _(" (catch)")); | |
3086aeae DJ |
6903 | } |
6904 | ||
6905 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { | |
ce78b96d JB |
6906 | NULL, /* insert */ |
6907 | NULL, /* remove */ | |
6908 | NULL, /* breakpoint_hit */ | |
3086aeae DJ |
6909 | print_exception_catchpoint, |
6910 | print_one_exception_catchpoint, | |
6911 | print_mention_exception_catchpoint | |
6912 | }; | |
6913 | ||
6914 | static int | |
6915 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
6916 | enum exception_event_kind ex_event, int from_tty) | |
6917 | { | |
604133b5 AR |
6918 | char *trigger_func_name; |
6919 | ||
3086aeae | 6920 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 6921 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 6922 | else |
604133b5 | 6923 | trigger_func_name = "__cxa_throw"; |
3086aeae | 6924 | |
a6d9a66e UW |
6925 | break_command_really (get_current_arch (), |
6926 | trigger_func_name, cond_string, -1, | |
604133b5 | 6927 | 0 /* condition and thread are valid. */, |
1042e4c0 | 6928 | tempflag, 0, 0, |
604133b5 AR |
6929 | 0, |
6930 | AUTO_BOOLEAN_TRUE /* pending */, | |
41447f92 VP |
6931 | &gnu_v3_exception_catchpoint_ops, from_tty, |
6932 | 1 /* enabled */); | |
3086aeae | 6933 | |
3086aeae DJ |
6934 | return 1; |
6935 | } | |
6936 | ||
c5aa993b | 6937 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
6938 | |
6939 | static void | |
fba45db2 KB |
6940 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
6941 | int tempflag, int from_tty) | |
c906108c | 6942 | { |
c5aa993b JM |
6943 | char *cond_string = NULL; |
6944 | struct symtab_and_line *sal = NULL; | |
6945 | ||
44feb3ce TT |
6946 | if (!arg) |
6947 | arg = ""; | |
c906108c | 6948 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6949 | |
c906108c SS |
6950 | cond_string = ep_parse_optional_if_clause (&arg); |
6951 | ||
6952 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6953 | error (_("Junk at end of arguments.")); |
c906108c | 6954 | |
059fb39f PM |
6955 | if (ex_event != EX_EVENT_THROW |
6956 | && ex_event != EX_EVENT_CATCH) | |
8a3fe4f8 | 6957 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 6958 | |
3086aeae DJ |
6959 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
6960 | return; | |
6961 | ||
8a3fe4f8 | 6962 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
6963 | } |
6964 | ||
44feb3ce TT |
6965 | /* Implementation of "catch catch" command. */ |
6966 | ||
6967 | static void | |
6968 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
6969 | { | |
6970 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
6971 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); | |
6972 | } | |
6973 | ||
6974 | /* Implementation of "catch throw" command. */ | |
6975 | ||
6976 | static void | |
6977 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
6978 | { | |
6979 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
6980 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); | |
6981 | } | |
6982 | ||
f7f9143b JB |
6983 | /* Create a breakpoint struct for Ada exception catchpoints. */ |
6984 | ||
6985 | static void | |
a6d9a66e UW |
6986 | create_ada_exception_breakpoint (struct gdbarch *gdbarch, |
6987 | struct symtab_and_line sal, | |
f7f9143b JB |
6988 | char *addr_string, |
6989 | char *exp_string, | |
6990 | char *cond_string, | |
6991 | struct expression *cond, | |
6992 | struct breakpoint_ops *ops, | |
6993 | int tempflag, | |
6994 | int from_tty) | |
6995 | { | |
6996 | struct breakpoint *b; | |
6997 | ||
6998 | if (from_tty) | |
6999 | { | |
5af949e3 UW |
7000 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
7001 | if (!loc_gdbarch) | |
7002 | loc_gdbarch = gdbarch; | |
7003 | ||
7004 | describe_other_breakpoints (loc_gdbarch, sal.pc, sal.section, -1); | |
f7f9143b JB |
7005 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
7006 | version for exception catchpoints, because two catchpoints | |
7007 | used for different exception names will use the same address. | |
7008 | In this case, a "breakpoint ... also set at..." warning is | |
7009 | unproductive. Besides. the warning phrasing is also a bit | |
7010 | inapropriate, we should use the word catchpoint, and tell | |
7011 | the user what type of catchpoint it is. The above is good | |
7012 | enough for now, though. */ | |
7013 | } | |
7014 | ||
a6d9a66e | 7015 | b = set_raw_breakpoint (gdbarch, sal, bp_breakpoint); |
f7f9143b JB |
7016 | set_breakpoint_count (breakpoint_count + 1); |
7017 | ||
7018 | b->enable_state = bp_enabled; | |
7019 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
7020 | b->number = breakpoint_count; | |
7021 | b->ignore_count = 0; | |
511a6cd4 | 7022 | b->loc->cond = cond; |
f7f9143b JB |
7023 | b->addr_string = addr_string; |
7024 | b->language = language_ada; | |
7025 | b->cond_string = cond_string; | |
7026 | b->exp_string = exp_string; | |
7027 | b->thread = -1; | |
7028 | b->ops = ops; | |
f7f9143b JB |
7029 | |
7030 | mention (b); | |
b60e7edf | 7031 | update_global_location_list (1); |
f7f9143b JB |
7032 | } |
7033 | ||
7034 | /* Implement the "catch exception" command. */ | |
7035 | ||
7036 | static void | |
44feb3ce TT |
7037 | catch_ada_exception_command (char *arg, int from_tty, |
7038 | struct cmd_list_element *command) | |
f7f9143b | 7039 | { |
a6d9a66e | 7040 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 7041 | int tempflag; |
f7f9143b JB |
7042 | struct symtab_and_line sal; |
7043 | enum bptype type; | |
7044 | char *addr_string = NULL; | |
7045 | char *exp_string = NULL; | |
7046 | char *cond_string = NULL; | |
7047 | struct expression *cond = NULL; | |
7048 | struct breakpoint_ops *ops = NULL; | |
7049 | ||
44feb3ce TT |
7050 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
7051 | ||
7052 | if (!arg) | |
7053 | arg = ""; | |
f7f9143b JB |
7054 | sal = ada_decode_exception_location (arg, &addr_string, &exp_string, |
7055 | &cond_string, &cond, &ops); | |
a6d9a66e | 7056 | create_ada_exception_breakpoint (gdbarch, sal, addr_string, exp_string, |
f7f9143b JB |
7057 | cond_string, cond, ops, tempflag, |
7058 | from_tty); | |
7059 | } | |
7060 | ||
7061 | /* Implement the "catch assert" command. */ | |
7062 | ||
7063 | static void | |
44feb3ce | 7064 | catch_assert_command (char *arg, int from_tty, struct cmd_list_element *command) |
f7f9143b | 7065 | { |
a6d9a66e | 7066 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 7067 | int tempflag; |
f7f9143b JB |
7068 | struct symtab_and_line sal; |
7069 | char *addr_string = NULL; | |
7070 | struct breakpoint_ops *ops = NULL; | |
7071 | ||
44feb3ce TT |
7072 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
7073 | ||
7074 | if (!arg) | |
7075 | arg = ""; | |
f7f9143b | 7076 | sal = ada_decode_assert_location (arg, &addr_string, &ops); |
a6d9a66e UW |
7077 | create_ada_exception_breakpoint (gdbarch, sal, addr_string, NULL, NULL, NULL, |
7078 | ops, tempflag, from_tty); | |
f7f9143b JB |
7079 | } |
7080 | ||
c906108c | 7081 | static void |
fba45db2 | 7082 | catch_command (char *arg, int from_tty) |
c906108c | 7083 | { |
44feb3ce | 7084 | error (_("Catch requires an event name.")); |
c906108c SS |
7085 | } |
7086 | \f | |
7087 | ||
7088 | static void | |
fba45db2 | 7089 | tcatch_command (char *arg, int from_tty) |
c906108c | 7090 | { |
44feb3ce | 7091 | error (_("Catch requires an event name.")); |
c906108c SS |
7092 | } |
7093 | ||
80f8a6eb | 7094 | /* Delete breakpoints by address or line. */ |
c906108c SS |
7095 | |
7096 | static void | |
fba45db2 | 7097 | clear_command (char *arg, int from_tty) |
c906108c | 7098 | { |
d6e956e5 VP |
7099 | struct breakpoint *b; |
7100 | VEC(breakpoint_p) *found = 0; | |
7101 | int ix; | |
c906108c SS |
7102 | int default_match; |
7103 | struct symtabs_and_lines sals; | |
7104 | struct symtab_and_line sal; | |
c906108c SS |
7105 | int i; |
7106 | ||
7107 | if (arg) | |
7108 | { | |
7109 | sals = decode_line_spec (arg, 1); | |
7110 | default_match = 0; | |
7111 | } | |
7112 | else | |
7113 | { | |
c5aa993b | 7114 | sals.sals = (struct symtab_and_line *) |
c906108c | 7115 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 7116 | make_cleanup (xfree, sals.sals); |
fe39c653 | 7117 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
7118 | sal.line = default_breakpoint_line; |
7119 | sal.symtab = default_breakpoint_symtab; | |
7120 | sal.pc = default_breakpoint_address; | |
7121 | if (sal.symtab == 0) | |
8a3fe4f8 | 7122 | error (_("No source file specified.")); |
c906108c SS |
7123 | |
7124 | sals.sals[0] = sal; | |
7125 | sals.nelts = 1; | |
7126 | ||
7127 | default_match = 1; | |
7128 | } | |
7129 | ||
ed0616c6 VP |
7130 | /* We don't call resolve_sal_pc here. That's not |
7131 | as bad as it seems, because all existing breakpoints | |
7132 | typically have both file/line and pc set. So, if | |
7133 | clear is given file/line, we can match this to existing | |
7134 | breakpoint without obtaining pc at all. | |
7135 | ||
7136 | We only support clearing given the address explicitly | |
7137 | present in breakpoint table. Say, we've set breakpoint | |
7138 | at file:line. There were several PC values for that file:line, | |
7139 | due to optimization, all in one block. | |
7140 | We've picked one PC value. If "clear" is issued with another | |
7141 | PC corresponding to the same file:line, the breakpoint won't | |
7142 | be cleared. We probably can still clear the breakpoint, but | |
7143 | since the other PC value is never presented to user, user | |
7144 | can only find it by guessing, and it does not seem important | |
7145 | to support that. */ | |
7146 | ||
c906108c | 7147 | /* For each line spec given, delete bps which correspond |
80f8a6eb MS |
7148 | to it. Do it in two passes, solely to preserve the current |
7149 | behavior that from_tty is forced true if we delete more than | |
7150 | one breakpoint. */ | |
c906108c | 7151 | |
80f8a6eb | 7152 | found = NULL; |
c906108c SS |
7153 | for (i = 0; i < sals.nelts; i++) |
7154 | { | |
7155 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
7156 | If line given (pc == 0), clear all bpts on specified line. |
7157 | If defaulting, clear all bpts on default line | |
c906108c | 7158 | or at default pc. |
c5aa993b JM |
7159 | |
7160 | defaulting sal.pc != 0 tests to do | |
7161 | ||
7162 | 0 1 pc | |
7163 | 1 1 pc _and_ line | |
7164 | 0 0 line | |
7165 | 1 0 <can't happen> */ | |
c906108c SS |
7166 | |
7167 | sal = sals.sals[i]; | |
c906108c | 7168 | |
d6e956e5 VP |
7169 | /* Find all matching breakpoints and add them to |
7170 | 'found'. */ | |
7171 | ALL_BREAKPOINTS (b) | |
c5aa993b | 7172 | { |
0d381245 | 7173 | int match = 0; |
80f8a6eb MS |
7174 | /* Are we going to delete b? */ |
7175 | if (b->type != bp_none | |
7176 | && b->type != bp_watchpoint | |
7177 | && b->type != bp_hardware_watchpoint | |
7178 | && b->type != bp_read_watchpoint | |
0d381245 VP |
7179 | && b->type != bp_access_watchpoint) |
7180 | { | |
7181 | struct bp_location *loc = b->loc; | |
7182 | for (; loc; loc = loc->next) | |
7183 | { | |
7184 | int pc_match = sal.pc | |
7185 | && (loc->address == sal.pc) | |
7186 | && (!section_is_overlay (loc->section) | |
7187 | || loc->section == sal.section); | |
7188 | int line_match = ((default_match || (0 == sal.pc)) | |
7189 | && b->source_file != NULL | |
7190 | && sal.symtab != NULL | |
7191 | && strcmp (b->source_file, sal.symtab->filename) == 0 | |
7192 | && b->line_number == sal.line); | |
7193 | if (pc_match || line_match) | |
7194 | { | |
7195 | match = 1; | |
7196 | break; | |
7197 | } | |
7198 | } | |
7199 | } | |
7200 | ||
7201 | if (match) | |
d6e956e5 | 7202 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 7203 | } |
80f8a6eb MS |
7204 | } |
7205 | /* Now go thru the 'found' chain and delete them. */ | |
d6e956e5 | 7206 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
7207 | { |
7208 | if (arg) | |
8a3fe4f8 | 7209 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 7210 | else |
8a3fe4f8 | 7211 | error (_("No breakpoint at this line.")); |
80f8a6eb | 7212 | } |
c906108c | 7213 | |
d6e956e5 | 7214 | if (VEC_length(breakpoint_p, found) > 1) |
80f8a6eb MS |
7215 | from_tty = 1; /* Always report if deleted more than one */ |
7216 | if (from_tty) | |
a3f17187 | 7217 | { |
d6e956e5 | 7218 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
7219 | printf_unfiltered (_("Deleted breakpoint ")); |
7220 | else | |
7221 | printf_unfiltered (_("Deleted breakpoints ")); | |
7222 | } | |
80f8a6eb | 7223 | breakpoints_changed (); |
d6e956e5 VP |
7224 | |
7225 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 7226 | { |
c5aa993b | 7227 | if (from_tty) |
d6e956e5 VP |
7228 | printf_unfiltered ("%d ", b->number); |
7229 | delete_breakpoint (b); | |
c906108c | 7230 | } |
80f8a6eb MS |
7231 | if (from_tty) |
7232 | putchar_unfiltered ('\n'); | |
c906108c SS |
7233 | } |
7234 | \f | |
7235 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
7236 | all breakpoints that are marked for deletion, whether hit or not. | |
7237 | This is called after any breakpoint is hit, or after errors. */ | |
7238 | ||
7239 | void | |
fba45db2 | 7240 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
7241 | { |
7242 | struct breakpoint *b, *temp; | |
7243 | ||
7244 | for (; bs; bs = bs->next) | |
20874c92 VP |
7245 | if (bs->breakpoint_at |
7246 | && bs->breakpoint_at->owner | |
7247 | && bs->breakpoint_at->owner->disposition == disp_del | |
c906108c | 7248 | && bs->stop) |
4f8d1dc6 | 7249 | delete_breakpoint (bs->breakpoint_at->owner); |
c906108c SS |
7250 | |
7251 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7252 | { |
b5de0fa7 | 7253 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
7254 | delete_breakpoint (b); |
7255 | } | |
c906108c SS |
7256 | } |
7257 | ||
f7545552 TT |
7258 | /* A cleanup function which destroys a vector. */ |
7259 | ||
7260 | static void | |
7261 | do_vec_free (void *p) | |
7262 | { | |
7263 | VEC(bp_location_p) **vec = p; | |
7264 | if (*vec) | |
7265 | VEC_free (bp_location_p, *vec); | |
7266 | } | |
7267 | ||
4cd9bd08 | 7268 | /* If SHOULD_INSERT is false, do not insert any breakpoint locations |
b60e7edf PA |
7269 | into the inferior, only remove already-inserted locations that no |
7270 | longer should be inserted. Functions that delete a breakpoint or | |
7271 | breakpoints should pass false, so that deleting a breakpoint | |
7272 | doesn't have the side effect of inserting the locations of other | |
7273 | breakpoints that are marked not-inserted, but should_be_inserted | |
7274 | returns true on them. | |
7275 | ||
7276 | This behaviour is useful is situations close to tear-down -- e.g., | |
7277 | after an exec, while the target still has execution, but breakpoint | |
7278 | shadows of the previous executable image should *NOT* be restored | |
7279 | to the new image; or before detaching, where the target still has | |
7280 | execution and wants to delete breakpoints from GDB's lists, and all | |
7281 | breakpoints had already been removed from the inferior. */ | |
7282 | ||
0d381245 | 7283 | static void |
b60e7edf | 7284 | update_global_location_list (int should_insert) |
0d381245 | 7285 | { |
74960c60 VP |
7286 | struct breakpoint *b; |
7287 | struct bp_location **next = &bp_location_chain; | |
7288 | struct bp_location *loc; | |
7289 | struct bp_location *loc2; | |
74960c60 VP |
7290 | VEC(bp_location_p) *old_locations = NULL; |
7291 | int ret; | |
7292 | int ix; | |
f7545552 TT |
7293 | struct cleanup *cleanups; |
7294 | ||
7295 | cleanups = make_cleanup (do_vec_free, &old_locations); | |
74960c60 VP |
7296 | /* Store old locations for future reference. */ |
7297 | for (loc = bp_location_chain; loc; loc = loc->global_next) | |
7298 | VEC_safe_push (bp_location_p, old_locations, loc); | |
0d381245 | 7299 | |
74960c60 VP |
7300 | bp_location_chain = NULL; |
7301 | ALL_BREAKPOINTS (b) | |
0d381245 | 7302 | { |
74960c60 | 7303 | for (loc = b->loc; loc; loc = loc->next) |
0d381245 | 7304 | { |
74960c60 VP |
7305 | *next = loc; |
7306 | next = &(loc->global_next); | |
7307 | *next = NULL; | |
0d381245 | 7308 | } |
74960c60 VP |
7309 | } |
7310 | ||
7311 | /* Identify bp_location instances that are no longer present in the new | |
7312 | list, and therefore should be freed. Note that it's not necessary that | |
7313 | those locations should be removed from inferior -- if there's another | |
7314 | location at the same address (previously marked as duplicate), | |
7315 | we don't need to remove/insert the location. */ | |
7316 | for (ix = 0; VEC_iterate(bp_location_p, old_locations, ix, loc); ++ix) | |
7317 | { | |
7318 | /* Tells if 'loc' is found amoung the new locations. If not, we | |
7319 | have to free it. */ | |
7320 | int found_object = 0; | |
20874c92 VP |
7321 | /* Tells if the location should remain inserted in the target. */ |
7322 | int keep_in_target = 0; | |
7323 | int removed = 0; | |
74960c60 VP |
7324 | for (loc2 = bp_location_chain; loc2; loc2 = loc2->global_next) |
7325 | if (loc2 == loc) | |
7326 | { | |
7327 | found_object = 1; | |
7328 | break; | |
7329 | } | |
7330 | ||
7331 | /* If this location is no longer present, and inserted, look if there's | |
7332 | maybe a new location at the same address. If so, mark that one | |
7333 | inserted, and don't remove this one. This is needed so that we | |
7334 | don't have a time window where a breakpoint at certain location is not | |
7335 | inserted. */ | |
7336 | ||
7337 | if (loc->inserted) | |
0d381245 | 7338 | { |
74960c60 | 7339 | /* If the location is inserted now, we might have to remove it. */ |
74960c60 VP |
7340 | |
7341 | if (found_object && should_be_inserted (loc)) | |
7342 | { | |
7343 | /* The location is still present in the location list, and still | |
7344 | should be inserted. Don't do anything. */ | |
20874c92 | 7345 | keep_in_target = 1; |
74960c60 VP |
7346 | } |
7347 | else | |
7348 | { | |
7349 | /* The location is either no longer present, or got disabled. | |
7350 | See if there's another location at the same address, in which | |
7351 | case we don't need to remove this one from the target. */ | |
7352 | if (breakpoint_address_is_meaningful (loc->owner)) | |
7353 | for (loc2 = bp_location_chain; loc2; loc2 = loc2->global_next) | |
7354 | { | |
7355 | /* For the sake of should_insert_location. The | |
7356 | call to check_duplicates will fix up this later. */ | |
7357 | loc2->duplicate = 0; | |
7358 | if (should_be_inserted (loc2) | |
7359 | && loc2 != loc && loc2->address == loc->address) | |
7360 | { | |
7361 | loc2->inserted = 1; | |
7362 | loc2->target_info = loc->target_info; | |
20874c92 | 7363 | keep_in_target = 1; |
74960c60 VP |
7364 | break; |
7365 | } | |
7366 | } | |
7367 | } | |
7368 | ||
20874c92 VP |
7369 | if (!keep_in_target) |
7370 | { | |
7371 | if (remove_breakpoint (loc, mark_uninserted)) | |
7372 | { | |
7373 | /* This is just about all we can do. We could keep this | |
7374 | location on the global list, and try to remove it next | |
7375 | time, but there's no particular reason why we will | |
7376 | succeed next time. | |
7377 | ||
7378 | Note that at this point, loc->owner is still valid, | |
7379 | as delete_breakpoint frees the breakpoint only | |
7380 | after calling us. */ | |
7381 | printf_filtered (_("warning: Error removing breakpoint %d\n"), | |
7382 | loc->owner->number); | |
7383 | } | |
7384 | removed = 1; | |
7385 | } | |
0d381245 | 7386 | } |
74960c60 VP |
7387 | |
7388 | if (!found_object) | |
1c5cfe86 PA |
7389 | { |
7390 | if (removed && non_stop) | |
20874c92 VP |
7391 | { |
7392 | /* This location was removed from the targets. In non-stop mode, | |
7393 | a race condition is possible where we've removed a breakpoint, | |
7394 | but stop events for that breakpoint are already queued and will | |
7395 | arrive later. To suppress spurious SIGTRAPs reported to user, | |
7396 | we keep this breakpoint location for a bit, and will retire it | |
7397 | after we see 3 * thread_count events. | |
1c5cfe86 | 7398 | The theory here is that reporting of events should, |
20874c92 VP |
7399 | "on the average", be fair, so after that many event we'll see |
7400 | events from all threads that have anything of interest, and no | |
1c5cfe86 | 7401 | longer need to keep this breakpoint. This is just a |
20874c92 | 7402 | heuristic, but if it's wrong, we'll report unexpected SIGTRAP, |
1c5cfe86 | 7403 | which is usability issue, but not a correctness problem. */ |
20874c92 VP |
7404 | loc->events_till_retirement = 3 * (thread_count () + 1); |
7405 | loc->owner = NULL; | |
20874c92 | 7406 | |
1c5cfe86 PA |
7407 | VEC_safe_push (bp_location_p, moribund_locations, loc); |
7408 | } | |
7409 | else | |
7410 | free_bp_location (loc); | |
20874c92 | 7411 | } |
74960c60 | 7412 | } |
1c5cfe86 | 7413 | |
74960c60 VP |
7414 | ALL_BREAKPOINTS (b) |
7415 | { | |
7416 | check_duplicates (b); | |
0d381245 | 7417 | } |
74960c60 | 7418 | |
50c71eaf | 7419 | if (breakpoints_always_inserted_mode () && should_insert |
c35b1492 | 7420 | && (have_live_inferiors () |
2567c7d9 | 7421 | || (gdbarch_has_global_breakpoints (target_gdbarch)))) |
74960c60 | 7422 | insert_breakpoint_locations (); |
f7545552 TT |
7423 | |
7424 | do_cleanups (cleanups); | |
74960c60 VP |
7425 | } |
7426 | ||
20874c92 VP |
7427 | void |
7428 | breakpoint_retire_moribund (void) | |
7429 | { | |
7430 | struct bp_location *loc; | |
7431 | int ix; | |
7432 | ||
7433 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
7434 | if (--(loc->events_till_retirement) == 0) | |
7435 | { | |
7436 | free_bp_location (loc); | |
7437 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
7438 | --ix; | |
7439 | } | |
7440 | } | |
7441 | ||
74960c60 | 7442 | static void |
b60e7edf | 7443 | update_global_location_list_nothrow (int inserting) |
74960c60 VP |
7444 | { |
7445 | struct gdb_exception e; | |
7446 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
b60e7edf | 7447 | update_global_location_list (inserting); |
0d381245 VP |
7448 | } |
7449 | ||
a474d7c2 PA |
7450 | /* Clear BPT from a BPS. */ |
7451 | static void | |
7452 | bpstat_remove_breakpoint (bpstat bps, struct breakpoint *bpt) | |
7453 | { | |
7454 | bpstat bs; | |
7455 | for (bs = bps; bs; bs = bs->next) | |
7456 | if (bs->breakpoint_at && bs->breakpoint_at->owner == bpt) | |
7457 | { | |
7458 | bs->breakpoint_at = NULL; | |
7459 | bs->old_val = NULL; | |
7460 | /* bs->commands will be freed later. */ | |
7461 | } | |
7462 | } | |
7463 | ||
7464 | /* Callback for iterate_over_threads. */ | |
7465 | static int | |
7466 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
7467 | { | |
7468 | struct breakpoint *bpt = data; | |
7469 | bpstat_remove_breakpoint (th->stop_bpstat, bpt); | |
7470 | return 0; | |
7471 | } | |
7472 | ||
53a5351d JM |
7473 | /* Delete a breakpoint and clean up all traces of it in the data |
7474 | structures. */ | |
c906108c SS |
7475 | |
7476 | void | |
fba45db2 | 7477 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 7478 | { |
52f0bd74 | 7479 | struct breakpoint *b; |
74960c60 | 7480 | struct bp_location *loc, *next; |
c906108c | 7481 | |
8a3fe4f8 | 7482 | gdb_assert (bpt != NULL); |
c906108c SS |
7483 | |
7484 | /* Has this bp already been deleted? This can happen because multiple | |
7485 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
7486 | ||
7487 | One example of this happening is a watchpoint's scope bp. When the | |
7488 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
7489 | delete it. We also delete its scope bp. But the scope bp is marked | |
7490 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
7491 | checked for auto-deleting bp's, which are deleted. | |
7492 | ||
7493 | A real solution to this problem might involve reference counts in bp's, | |
7494 | and/or giving them pointers back to their referencing bpstat's, and | |
7495 | teaching delete_breakpoint to only free a bp's storage when no more | |
1272ad14 | 7496 | references were extent. A cheaper bandaid was chosen. */ |
c906108c SS |
7497 | if (bpt->type == bp_none) |
7498 | return; | |
7499 | ||
383f836e | 7500 | observer_notify_breakpoint_deleted (bpt->number); |
c906108c | 7501 | |
c906108c SS |
7502 | if (breakpoint_chain == bpt) |
7503 | breakpoint_chain = bpt->next; | |
7504 | ||
c906108c SS |
7505 | ALL_BREAKPOINTS (b) |
7506 | if (b->next == bpt) | |
c5aa993b JM |
7507 | { |
7508 | b->next = bpt->next; | |
7509 | break; | |
7510 | } | |
c906108c | 7511 | |
c906108c | 7512 | free_command_lines (&bpt->commands); |
c906108c | 7513 | if (bpt->cond_string != NULL) |
b8c9b27d | 7514 | xfree (bpt->cond_string); |
c906108c | 7515 | if (bpt->addr_string != NULL) |
b8c9b27d | 7516 | xfree (bpt->addr_string); |
c906108c | 7517 | if (bpt->exp != NULL) |
b8c9b27d | 7518 | xfree (bpt->exp); |
c906108c | 7519 | if (bpt->exp_string != NULL) |
b8c9b27d | 7520 | xfree (bpt->exp_string); |
c906108c SS |
7521 | if (bpt->val != NULL) |
7522 | value_free (bpt->val); | |
7523 | if (bpt->source_file != NULL) | |
b8c9b27d | 7524 | xfree (bpt->source_file); |
c906108c | 7525 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 7526 | xfree (bpt->exec_pathname); |
c906108c SS |
7527 | |
7528 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
7529 | /* FIXME, how can we find all bpstat's? | |
198757a8 VP |
7530 | We just check stop_bpstat for now. Note that we cannot just |
7531 | remove bpstats pointing at bpt from the stop_bpstat list | |
7532 | entirely, as breakpoint commands are associated with the bpstat; | |
7533 | if we remove it here, then the later call to | |
7534 | bpstat_do_actions (&stop_bpstat); | |
7535 | in event-top.c won't do anything, and temporary breakpoints | |
7536 | with commands won't work. */ | |
a474d7c2 | 7537 | |
a474d7c2 | 7538 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); |
74960c60 VP |
7539 | |
7540 | /* Now that breakpoint is removed from breakpoint | |
7541 | list, update the global location list. This | |
7542 | will remove locations that used to belong to | |
7543 | this breakpoint. Do this before freeing | |
7544 | the breakpoint itself, since remove_breakpoint | |
7545 | looks at location's owner. It might be better | |
7546 | design to have location completely self-contained, | |
7547 | but it's not the case now. */ | |
b60e7edf | 7548 | update_global_location_list (0); |
74960c60 VP |
7549 | |
7550 | ||
c906108c SS |
7551 | /* On the chance that someone will soon try again to delete this same |
7552 | bp, we mark it as deleted before freeing its storage. */ | |
7553 | bpt->type = bp_none; | |
7554 | ||
b8c9b27d | 7555 | xfree (bpt); |
c906108c SS |
7556 | } |
7557 | ||
4d6140d9 AC |
7558 | static void |
7559 | do_delete_breakpoint_cleanup (void *b) | |
7560 | { | |
7561 | delete_breakpoint (b); | |
7562 | } | |
7563 | ||
7564 | struct cleanup * | |
7565 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
7566 | { | |
7567 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
7568 | } | |
7569 | ||
c906108c | 7570 | void |
fba45db2 | 7571 | delete_command (char *arg, int from_tty) |
c906108c SS |
7572 | { |
7573 | struct breakpoint *b, *temp; | |
7574 | ||
ea9365bb TT |
7575 | dont_repeat (); |
7576 | ||
c906108c SS |
7577 | if (arg == 0) |
7578 | { | |
7579 | int breaks_to_delete = 0; | |
7580 | ||
7581 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
7582 | Do not delete internal or call-dummy breakpoints, these |
7583 | have to be deleted with an explicit breakpoint number argument. */ | |
7584 | ALL_BREAKPOINTS (b) | |
7585 | { | |
059fb39f PM |
7586 | if (b->type != bp_call_dummy |
7587 | && b->type != bp_shlib_event | |
7588 | && b->type != bp_thread_event | |
7589 | && b->type != bp_overlay_event | |
0fd8e87f | 7590 | && b->type != bp_longjmp_master |
059fb39f | 7591 | && b->number >= 0) |
973d738b DJ |
7592 | { |
7593 | breaks_to_delete = 1; | |
7594 | break; | |
7595 | } | |
c5aa993b | 7596 | } |
c906108c SS |
7597 | |
7598 | /* Ask user only if there are some breakpoints to delete. */ | |
7599 | if (!from_tty | |
e2e0b3e5 | 7600 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 7601 | { |
c5aa993b JM |
7602 | ALL_BREAKPOINTS_SAFE (b, temp) |
7603 | { | |
059fb39f PM |
7604 | if (b->type != bp_call_dummy |
7605 | && b->type != bp_shlib_event | |
7606 | && b->type != bp_thread_event | |
7607 | && b->type != bp_overlay_event | |
0fd8e87f | 7608 | && b->type != bp_longjmp_master |
059fb39f | 7609 | && b->number >= 0) |
c5aa993b JM |
7610 | delete_breakpoint (b); |
7611 | } | |
c906108c SS |
7612 | } |
7613 | } | |
7614 | else | |
7615 | map_breakpoint_numbers (arg, delete_breakpoint); | |
7616 | } | |
7617 | ||
0d381245 VP |
7618 | static int |
7619 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 7620 | { |
0d381245 VP |
7621 | for (; loc; loc = loc->next) |
7622 | if (!loc->shlib_disabled) | |
7623 | return 0; | |
7624 | return 1; | |
fe3f5fa8 VP |
7625 | } |
7626 | ||
776592bf DE |
7627 | /* Subroutine of update_breakpoint_locations to simplify it. |
7628 | Return non-zero if multiple fns in list LOC have the same name. | |
7629 | Null names are ignored. */ | |
7630 | ||
7631 | static int | |
7632 | ambiguous_names_p (struct bp_location *loc) | |
7633 | { | |
7634 | struct bp_location *l; | |
7635 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
7636 | (int (*) (const void *, const void *)) streq, | |
7637 | NULL, xcalloc, xfree); | |
7638 | ||
7639 | for (l = loc; l != NULL; l = l->next) | |
7640 | { | |
7641 | const char **slot; | |
7642 | const char *name = l->function_name; | |
7643 | ||
7644 | /* Allow for some names to be NULL, ignore them. */ | |
7645 | if (name == NULL) | |
7646 | continue; | |
7647 | ||
7648 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
7649 | INSERT); | |
7650 | /* NOTE: We can assume slot != NULL here because xcalloc never returns | |
7651 | NULL. */ | |
7652 | if (*slot != NULL) | |
7653 | { | |
7654 | htab_delete (htab); | |
7655 | return 1; | |
7656 | } | |
7657 | *slot = name; | |
7658 | } | |
7659 | ||
7660 | htab_delete (htab); | |
7661 | return 0; | |
7662 | } | |
7663 | ||
fe3f5fa8 | 7664 | static void |
0d381245 VP |
7665 | update_breakpoint_locations (struct breakpoint *b, |
7666 | struct symtabs_and_lines sals) | |
fe3f5fa8 VP |
7667 | { |
7668 | int i; | |
7669 | char *s; | |
0d381245 VP |
7670 | struct bp_location *existing_locations = b->loc; |
7671 | ||
7672 | /* If there's no new locations, and all existing locations | |
7673 | are pending, don't do anything. This optimizes | |
7674 | the common case where all locations are in the same | |
7675 | shared library, that was unloaded. We'd like to | |
7676 | retain the location, so that when the library | |
7677 | is loaded again, we don't loose the enabled/disabled | |
7678 | status of the individual locations. */ | |
7679 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) | |
fe3f5fa8 VP |
7680 | return; |
7681 | ||
fe3f5fa8 VP |
7682 | b->loc = NULL; |
7683 | ||
0d381245 | 7684 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 7685 | { |
0d381245 | 7686 | struct bp_location *new_loc = |
39d61571 | 7687 | add_location_to_breakpoint (b, &(sals.sals[i])); |
fe3f5fa8 | 7688 | |
0d381245 VP |
7689 | /* Reparse conditions, they might contain references to the |
7690 | old symtab. */ | |
7691 | if (b->cond_string != NULL) | |
7692 | { | |
7693 | struct gdb_exception e; | |
fe3f5fa8 | 7694 | |
0d381245 VP |
7695 | s = b->cond_string; |
7696 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
7697 | { | |
7698 | new_loc->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), | |
7699 | 0); | |
7700 | } | |
7701 | if (e.reason < 0) | |
7702 | { | |
7703 | warning (_("failed to reevaluate condition for breakpoint %d: %s"), | |
7704 | b->number, e.message); | |
7705 | new_loc->enabled = 0; | |
7706 | } | |
7707 | } | |
fe3f5fa8 | 7708 | |
0d381245 VP |
7709 | if (b->source_file != NULL) |
7710 | xfree (b->source_file); | |
7711 | if (sals.sals[i].symtab == NULL) | |
7712 | b->source_file = NULL; | |
7713 | else | |
1b36a34b | 7714 | b->source_file = xstrdup (sals.sals[i].symtab->filename); |
fe3f5fa8 | 7715 | |
0d381245 VP |
7716 | if (b->line_number == 0) |
7717 | b->line_number = sals.sals[i].line; | |
7718 | } | |
fe3f5fa8 | 7719 | |
514f746b AR |
7720 | /* Update locations of permanent breakpoints. */ |
7721 | if (b->enable_state == bp_permanent) | |
7722 | make_breakpoint_permanent (b); | |
7723 | ||
0d381245 VP |
7724 | /* If possible, carry over 'disable' status from existing breakpoints. */ |
7725 | { | |
7726 | struct bp_location *e = existing_locations; | |
776592bf DE |
7727 | /* If there are multiple breakpoints with the same function name, |
7728 | e.g. for inline functions, comparing function names won't work. | |
7729 | Instead compare pc addresses; this is just a heuristic as things | |
7730 | may have moved, but in practice it gives the correct answer | |
7731 | often enough until a better solution is found. */ | |
7732 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
7733 | ||
0d381245 VP |
7734 | for (; e; e = e->next) |
7735 | { | |
7736 | if (!e->enabled && e->function_name) | |
7737 | { | |
7738 | struct bp_location *l = b->loc; | |
776592bf DE |
7739 | if (have_ambiguous_names) |
7740 | { | |
7741 | for (; l; l = l->next) | |
7742 | if (e->address == l->address) | |
7743 | { | |
7744 | l->enabled = 0; | |
7745 | break; | |
7746 | } | |
7747 | } | |
7748 | else | |
7749 | { | |
7750 | for (; l; l = l->next) | |
7751 | if (l->function_name | |
7752 | && strcmp (e->function_name, l->function_name) == 0) | |
7753 | { | |
7754 | l->enabled = 0; | |
7755 | break; | |
7756 | } | |
7757 | } | |
0d381245 VP |
7758 | } |
7759 | } | |
7760 | } | |
fe3f5fa8 | 7761 | |
b60e7edf | 7762 | update_global_location_list (1); |
fe3f5fa8 VP |
7763 | } |
7764 | ||
7765 | ||
c906108c SS |
7766 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
7767 | The value we return ends up being the return value from catch_errors. | |
7768 | Unused in this case. */ | |
7769 | ||
7770 | static int | |
4efb68b1 | 7771 | breakpoint_re_set_one (void *bint) |
c906108c | 7772 | { |
53a5351d JM |
7773 | /* get past catch_errs */ |
7774 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
7775 | struct value *mark; |
7776 | int i; | |
fe3f5fa8 VP |
7777 | int not_found = 0; |
7778 | int *not_found_ptr = ¬_found; | |
7779 | struct symtabs_and_lines sals = {}; | |
ed0616c6 | 7780 | struct symtabs_and_lines expanded; |
c906108c | 7781 | char *s; |
b5de0fa7 | 7782 | enum enable_state save_enable; |
fe3f5fa8 | 7783 | struct gdb_exception e; |
f7545552 | 7784 | struct cleanup *cleanups; |
c906108c SS |
7785 | |
7786 | switch (b->type) | |
7787 | { | |
7788 | case bp_none: | |
8a3fe4f8 | 7789 | warning (_("attempted to reset apparently deleted breakpoint #%d?"), |
53a5351d | 7790 | b->number); |
c906108c SS |
7791 | return 0; |
7792 | case bp_breakpoint: | |
7793 | case bp_hardware_breakpoint: | |
1042e4c0 | 7794 | case bp_tracepoint: |
c906108c SS |
7795 | if (b->addr_string == NULL) |
7796 | { | |
7797 | /* Anything without a string can't be re-set. */ | |
7798 | delete_breakpoint (b); | |
7799 | return 0; | |
7800 | } | |
c906108c SS |
7801 | |
7802 | set_language (b->language); | |
7803 | input_radix = b->input_radix; | |
7804 | s = b->addr_string; | |
fe3f5fa8 | 7805 | TRY_CATCH (e, RETURN_MASK_ERROR) |
c906108c | 7806 | { |
fe3f5fa8 VP |
7807 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, |
7808 | not_found_ptr); | |
7809 | } | |
7810 | if (e.reason < 0) | |
7811 | { | |
7812 | int not_found_and_ok = 0; | |
7813 | /* For pending breakpoints, it's expected that parsing | |
7814 | will fail until the right shared library is loaded. | |
7815 | User has already told to create pending breakpoints and | |
7816 | don't need extra messages. If breakpoint is in bp_shlib_disabled | |
7817 | state, then user already saw the message about that breakpoint | |
7818 | being disabled, and don't want to see more errors. */ | |
0d381245 VP |
7819 | if (not_found |
7820 | && (b->condition_not_parsed | |
7821 | || (b->loc && b->loc->shlib_disabled) | |
7822 | || b->enable_state == bp_disabled)) | |
fe3f5fa8 VP |
7823 | not_found_and_ok = 1; |
7824 | ||
7825 | if (!not_found_and_ok) | |
c906108c | 7826 | { |
fe3f5fa8 VP |
7827 | /* We surely don't want to warn about the same breakpoint |
7828 | 10 times. One solution, implemented here, is disable | |
7829 | the breakpoint on error. Another solution would be to | |
7830 | have separate 'warning emitted' flag. Since this | |
7831 | happens only when a binary has changed, I don't know | |
7832 | which approach is better. */ | |
7833 | b->enable_state = bp_disabled; | |
7834 | throw_exception (e); | |
c906108c | 7835 | } |
fe3f5fa8 | 7836 | } |
c906108c | 7837 | |
fe3f5fa8 VP |
7838 | if (not_found) |
7839 | break; | |
7840 | ||
7841 | gdb_assert (sals.nelts == 1); | |
7842 | resolve_sal_pc (&sals.sals[0]); | |
0d381245 | 7843 | if (b->condition_not_parsed && s && s[0]) |
fe3f5fa8 VP |
7844 | { |
7845 | char *cond_string = 0; | |
7846 | int thread = -1; | |
4a306c9a JB |
7847 | int task = 0; |
7848 | ||
fe3f5fa8 | 7849 | find_condition_and_thread (s, sals.sals[0].pc, |
4a306c9a | 7850 | &cond_string, &thread, &task); |
fe3f5fa8 VP |
7851 | if (cond_string) |
7852 | b->cond_string = cond_string; | |
7853 | b->thread = thread; | |
4a306c9a | 7854 | b->task = task; |
0d381245 | 7855 | b->condition_not_parsed = 0; |
fe3f5fa8 | 7856 | } |
ed0616c6 | 7857 | expanded = expand_line_sal_maybe (sals.sals[0]); |
f7545552 | 7858 | cleanups = make_cleanup (xfree, sals.sals); |
ed0616c6 | 7859 | update_breakpoint_locations (b, expanded); |
f7545552 | 7860 | do_cleanups (cleanups); |
c906108c SS |
7861 | break; |
7862 | ||
7863 | case bp_watchpoint: | |
7864 | case bp_hardware_watchpoint: | |
7865 | case bp_read_watchpoint: | |
7866 | case bp_access_watchpoint: | |
0b3de036 VP |
7867 | /* Watchpoint can be either on expression using entirely global variables, |
7868 | or it can be on local variables. | |
7869 | ||
7870 | Watchpoints of the first kind are never auto-deleted, and even persist | |
7871 | across program restarts. Since they can use variables from shared | |
7872 | libraries, we need to reparse expression as libraries are loaded | |
7873 | and unloaded. | |
7874 | ||
7875 | Watchpoints on local variables can also change meaning as result | |
7876 | of solib event. For example, if a watchpoint uses both a local and | |
7877 | a global variables in expression, it's a local watchpoint, but | |
7878 | unloading of a shared library will make the expression invalid. | |
7879 | This is not a very common use case, but we still re-evaluate | |
7880 | expression, to avoid surprises to the user. | |
7881 | ||
7882 | Note that for local watchpoints, we re-evaluate it only if | |
7883 | watchpoints frame id is still valid. If it's not, it means | |
7884 | the watchpoint is out of scope and will be deleted soon. In fact, | |
7885 | I'm not sure we'll ever be called in this case. | |
7886 | ||
7887 | If a local watchpoint's frame id is still valid, then | |
7888 | b->exp_valid_block is likewise valid, and we can safely use it. | |
7889 | ||
7890 | Don't do anything about disabled watchpoints, since they will | |
7891 | be reevaluated again when enabled. */ | |
a5606eee | 7892 | update_watchpoint (b, 1 /* reparse */); |
c906108c | 7893 | break; |
c5aa993b JM |
7894 | /* We needn't really do anything to reset these, since the mask |
7895 | that requests them is unaffected by e.g., new libraries being | |
7896 | loaded. */ | |
ce78b96d | 7897 | case bp_catchpoint: |
c906108c | 7898 | break; |
c5aa993b | 7899 | |
c906108c | 7900 | default: |
a3f17187 | 7901 | printf_filtered (_("Deleting unknown breakpoint type %d\n"), b->type); |
c906108c | 7902 | /* fall through */ |
0fd8e87f UW |
7903 | /* Delete overlay event and longjmp master breakpoints; they will be |
7904 | reset later by breakpoint_re_set. */ | |
1900040c | 7905 | case bp_overlay_event: |
0fd8e87f | 7906 | case bp_longjmp_master: |
c906108c SS |
7907 | delete_breakpoint (b); |
7908 | break; | |
7909 | ||
c5aa993b JM |
7910 | /* This breakpoint is special, it's set up when the inferior |
7911 | starts and we really don't want to touch it. */ | |
c906108c SS |
7912 | case bp_shlib_event: |
7913 | ||
c4093a6a JM |
7914 | /* Like bp_shlib_event, this breakpoint type is special. |
7915 | Once it is set up, we do not want to touch it. */ | |
7916 | case bp_thread_event: | |
7917 | ||
c5aa993b JM |
7918 | /* Keep temporary breakpoints, which can be encountered when we step |
7919 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7920 | Otherwise these should have been blown away via the cleanup chain | |
7921 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7922 | case bp_until: |
7923 | case bp_finish: | |
7924 | case bp_watchpoint_scope: | |
7925 | case bp_call_dummy: | |
7926 | case bp_step_resume: | |
611c83ae PA |
7927 | case bp_longjmp: |
7928 | case bp_longjmp_resume: | |
c906108c SS |
7929 | break; |
7930 | } | |
7931 | ||
7932 | return 0; | |
7933 | } | |
7934 | ||
69de3c6a | 7935 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 7936 | void |
69de3c6a | 7937 | breakpoint_re_set (void) |
c906108c SS |
7938 | { |
7939 | struct breakpoint *b, *temp; | |
7940 | enum language save_language; | |
7941 | int save_input_radix; | |
c5aa993b | 7942 | |
c906108c SS |
7943 | save_language = current_language->la_language; |
7944 | save_input_radix = input_radix; | |
7945 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7946 | { |
53a5351d | 7947 | /* Format possible error msg */ |
fe3f5fa8 | 7948 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
7949 | b->number); |
7950 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 7951 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 7952 | do_cleanups (cleanups); |
c5aa993b | 7953 | } |
c906108c SS |
7954 | set_language (save_language); |
7955 | input_radix = save_input_radix; | |
e62c965a | 7956 | |
69de3c6a | 7957 | create_overlay_event_breakpoint ("_ovly_debug_event"); |
0fd8e87f UW |
7958 | create_longjmp_master_breakpoint ("longjmp"); |
7959 | create_longjmp_master_breakpoint ("_longjmp"); | |
7960 | create_longjmp_master_breakpoint ("siglongjmp"); | |
7961 | create_longjmp_master_breakpoint ("_siglongjmp"); | |
c906108c SS |
7962 | } |
7963 | \f | |
c906108c SS |
7964 | /* Reset the thread number of this breakpoint: |
7965 | ||
7966 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 7967 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 7968 | void |
fba45db2 | 7969 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
7970 | { |
7971 | if (b->thread != -1) | |
7972 | { | |
39f77062 KB |
7973 | if (in_thread_list (inferior_ptid)) |
7974 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
7975 | } |
7976 | } | |
7977 | ||
03ac34d5 MS |
7978 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7979 | If from_tty is nonzero, it prints a message to that effect, | |
7980 | which ends with a period (no newline). */ | |
7981 | ||
c906108c | 7982 | void |
fba45db2 | 7983 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 7984 | { |
52f0bd74 | 7985 | struct breakpoint *b; |
c906108c SS |
7986 | |
7987 | if (count < 0) | |
7988 | count = 0; | |
7989 | ||
7990 | ALL_BREAKPOINTS (b) | |
7991 | if (b->number == bptnum) | |
c5aa993b JM |
7992 | { |
7993 | b->ignore_count = count; | |
221ea385 KS |
7994 | if (from_tty) |
7995 | { | |
7996 | if (count == 0) | |
a3f17187 | 7997 | printf_filtered (_("Will stop next time breakpoint %d is reached."), |
221ea385 KS |
7998 | bptnum); |
7999 | else if (count == 1) | |
a3f17187 | 8000 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
8001 | bptnum); |
8002 | else | |
a3f17187 | 8003 | printf_filtered (_("Will ignore next %d crossings of breakpoint %d."), |
221ea385 KS |
8004 | count, bptnum); |
8005 | } | |
c5aa993b | 8006 | breakpoints_changed (); |
383f836e | 8007 | observer_notify_breakpoint_modified (b->number); |
c5aa993b JM |
8008 | return; |
8009 | } | |
c906108c | 8010 | |
8a3fe4f8 | 8011 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
8012 | } |
8013 | ||
b2175913 MS |
8014 | void |
8015 | make_breakpoint_silent (struct breakpoint *b) | |
8016 | { | |
8017 | /* Silence the breakpoint. */ | |
8018 | b->silent = 1; | |
8019 | } | |
8020 | ||
c906108c SS |
8021 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
8022 | ||
8023 | static void | |
fba45db2 | 8024 | ignore_command (char *args, int from_tty) |
c906108c SS |
8025 | { |
8026 | char *p = args; | |
52f0bd74 | 8027 | int num; |
c906108c SS |
8028 | |
8029 | if (p == 0) | |
e2e0b3e5 | 8030 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 8031 | |
c906108c | 8032 | num = get_number (&p); |
5c44784c | 8033 | if (num == 0) |
8a3fe4f8 | 8034 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 8035 | if (*p == 0) |
8a3fe4f8 | 8036 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
8037 | |
8038 | set_ignore_count (num, | |
8039 | longest_to_int (value_as_long (parse_and_eval (p))), | |
8040 | from_tty); | |
221ea385 KS |
8041 | if (from_tty) |
8042 | printf_filtered ("\n"); | |
c906108c SS |
8043 | } |
8044 | \f | |
8045 | /* Call FUNCTION on each of the breakpoints | |
8046 | whose numbers are given in ARGS. */ | |
8047 | ||
8048 | static void | |
831662b3 | 8049 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) |
c906108c | 8050 | { |
52f0bd74 | 8051 | char *p = args; |
c906108c | 8052 | char *p1; |
52f0bd74 AC |
8053 | int num; |
8054 | struct breakpoint *b, *tmp; | |
11cf8741 | 8055 | int match; |
c906108c SS |
8056 | |
8057 | if (p == 0) | |
e2e0b3e5 | 8058 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c SS |
8059 | |
8060 | while (*p) | |
8061 | { | |
11cf8741 | 8062 | match = 0; |
c906108c | 8063 | p1 = p; |
c5aa993b | 8064 | |
5c44784c JM |
8065 | num = get_number_or_range (&p1); |
8066 | if (num == 0) | |
c5aa993b | 8067 | { |
8a3fe4f8 | 8068 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
8069 | } |
8070 | else | |
8071 | { | |
8072 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
8073 | if (b->number == num) | |
8074 | { | |
8075 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 8076 | match = 1; |
5c44784c JM |
8077 | function (b); |
8078 | if (related_breakpoint) | |
8079 | function (related_breakpoint); | |
11cf8741 | 8080 | break; |
5c44784c | 8081 | } |
11cf8741 | 8082 | if (match == 0) |
a3f17187 | 8083 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 8084 | } |
c906108c SS |
8085 | p = p1; |
8086 | } | |
8087 | } | |
8088 | ||
0d381245 VP |
8089 | static struct bp_location * |
8090 | find_location_by_number (char *number) | |
8091 | { | |
8092 | char *dot = strchr (number, '.'); | |
8093 | char *p1; | |
8094 | int bp_num; | |
8095 | int loc_num; | |
8096 | struct breakpoint *b; | |
8097 | struct bp_location *loc; | |
8098 | ||
8099 | *dot = '\0'; | |
8100 | ||
8101 | p1 = number; | |
8102 | bp_num = get_number_or_range (&p1); | |
8103 | if (bp_num == 0) | |
8104 | error (_("Bad breakpoint number '%s'"), number); | |
8105 | ||
8106 | ALL_BREAKPOINTS (b) | |
8107 | if (b->number == bp_num) | |
8108 | { | |
8109 | break; | |
8110 | } | |
8111 | ||
8112 | if (!b || b->number != bp_num) | |
8113 | error (_("Bad breakpoint number '%s'"), number); | |
8114 | ||
8115 | p1 = dot+1; | |
8116 | loc_num = get_number_or_range (&p1); | |
8117 | if (loc_num == 0) | |
8118 | error (_("Bad breakpoint location number '%s'"), number); | |
8119 | ||
8120 | --loc_num; | |
8121 | loc = b->loc; | |
8122 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
8123 | ; | |
8124 | if (!loc) | |
8125 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
8126 | ||
8127 | return loc; | |
8128 | } | |
8129 | ||
8130 | ||
1900040c MS |
8131 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
8132 | If from_tty is nonzero, it prints a message to that effect, | |
8133 | which ends with a period (no newline). */ | |
8134 | ||
c906108c | 8135 | void |
fba45db2 | 8136 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
8137 | { |
8138 | /* Never disable a watchpoint scope breakpoint; we want to | |
8139 | hit them when we leave scope so we can delete both the | |
8140 | watchpoint and its scope breakpoint at that time. */ | |
8141 | if (bpt->type == bp_watchpoint_scope) | |
8142 | return; | |
8143 | ||
c2c6d25f | 8144 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 8145 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
8146 | return; |
8147 | ||
b5de0fa7 | 8148 | bpt->enable_state = bp_disabled; |
c906108c | 8149 | |
b60e7edf | 8150 | update_global_location_list (0); |
c906108c | 8151 | |
383f836e | 8152 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
8153 | } |
8154 | ||
c906108c | 8155 | static void |
fba45db2 | 8156 | disable_command (char *args, int from_tty) |
c906108c | 8157 | { |
52f0bd74 | 8158 | struct breakpoint *bpt; |
c906108c SS |
8159 | if (args == 0) |
8160 | ALL_BREAKPOINTS (bpt) | |
8161 | switch (bpt->type) | |
c5aa993b JM |
8162 | { |
8163 | case bp_none: | |
8a3fe4f8 | 8164 | warning (_("attempted to disable apparently deleted breakpoint #%d?"), |
53a5351d | 8165 | bpt->number); |
c5aa993b JM |
8166 | continue; |
8167 | case bp_breakpoint: | |
1042e4c0 | 8168 | case bp_tracepoint: |
ce78b96d | 8169 | case bp_catchpoint: |
c5aa993b JM |
8170 | case bp_hardware_breakpoint: |
8171 | case bp_watchpoint: | |
8172 | case bp_hardware_watchpoint: | |
8173 | case bp_read_watchpoint: | |
8174 | case bp_access_watchpoint: | |
8175 | disable_breakpoint (bpt); | |
8176 | default: | |
8177 | continue; | |
8178 | } | |
0d381245 VP |
8179 | else if (strchr (args, '.')) |
8180 | { | |
8181 | struct bp_location *loc = find_location_by_number (args); | |
8182 | if (loc) | |
8183 | loc->enabled = 0; | |
b60e7edf | 8184 | update_global_location_list (0); |
0d381245 | 8185 | } |
c906108c SS |
8186 | else |
8187 | map_breakpoint_numbers (args, disable_breakpoint); | |
8188 | } | |
8189 | ||
8190 | static void | |
fba45db2 | 8191 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 8192 | { |
c906108c SS |
8193 | int target_resources_ok, other_type_used; |
8194 | struct value *mark; | |
8195 | ||
8196 | if (bpt->type == bp_hardware_breakpoint) | |
8197 | { | |
8198 | int i; | |
c5aa993b | 8199 | i = hw_breakpoint_used_count (); |
53a5351d | 8200 | target_resources_ok = |
d92524f1 | 8201 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 8202 | i + 1, 0); |
c906108c | 8203 | if (target_resources_ok == 0) |
8a3fe4f8 | 8204 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 8205 | else if (target_resources_ok < 0) |
8a3fe4f8 | 8206 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
8207 | } |
8208 | ||
059fb39f PM |
8209 | if (bpt->type == bp_watchpoint |
8210 | || bpt->type == bp_hardware_watchpoint | |
8211 | || bpt->type == bp_read_watchpoint | |
8212 | || bpt->type == bp_access_watchpoint) | |
c906108c | 8213 | { |
dde02812 ES |
8214 | struct gdb_exception e; |
8215 | ||
8216 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 8217 | { |
dde02812 | 8218 | update_watchpoint (bpt, 1 /* reparse */); |
c906108c | 8219 | } |
dde02812 | 8220 | if (e.reason < 0) |
c5aa993b | 8221 | { |
dde02812 ES |
8222 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
8223 | bpt->number); | |
8224 | return; | |
c5aa993b | 8225 | } |
c906108c | 8226 | } |
0101ce28 | 8227 | |
b4c291bb KH |
8228 | if (bpt->enable_state != bp_permanent) |
8229 | bpt->enable_state = bp_enabled; | |
8230 | bpt->disposition = disposition; | |
b60e7edf | 8231 | update_global_location_list (1); |
b4c291bb KH |
8232 | breakpoints_changed (); |
8233 | ||
383f836e | 8234 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
8235 | } |
8236 | ||
fe3f5fa8 | 8237 | |
c906108c | 8238 | void |
fba45db2 | 8239 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
8240 | { |
8241 | do_enable_breakpoint (bpt, bpt->disposition); | |
8242 | } | |
8243 | ||
8244 | /* The enable command enables the specified breakpoints (or all defined | |
8245 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 8246 | in stopping the inferior. */ |
c906108c | 8247 | |
c906108c | 8248 | static void |
fba45db2 | 8249 | enable_command (char *args, int from_tty) |
c906108c | 8250 | { |
52f0bd74 | 8251 | struct breakpoint *bpt; |
c906108c SS |
8252 | if (args == 0) |
8253 | ALL_BREAKPOINTS (bpt) | |
8254 | switch (bpt->type) | |
c5aa993b JM |
8255 | { |
8256 | case bp_none: | |
8a3fe4f8 | 8257 | warning (_("attempted to enable apparently deleted breakpoint #%d?"), |
53a5351d | 8258 | bpt->number); |
c5aa993b JM |
8259 | continue; |
8260 | case bp_breakpoint: | |
1042e4c0 | 8261 | case bp_tracepoint: |
ce78b96d | 8262 | case bp_catchpoint: |
c5aa993b JM |
8263 | case bp_hardware_breakpoint: |
8264 | case bp_watchpoint: | |
8265 | case bp_hardware_watchpoint: | |
8266 | case bp_read_watchpoint: | |
8267 | case bp_access_watchpoint: | |
8268 | enable_breakpoint (bpt); | |
8269 | default: | |
8270 | continue; | |
8271 | } | |
0d381245 VP |
8272 | else if (strchr (args, '.')) |
8273 | { | |
8274 | struct bp_location *loc = find_location_by_number (args); | |
8275 | if (loc) | |
8276 | loc->enabled = 1; | |
b60e7edf | 8277 | update_global_location_list (1); |
0d381245 | 8278 | } |
c906108c SS |
8279 | else |
8280 | map_breakpoint_numbers (args, enable_breakpoint); | |
8281 | } | |
8282 | ||
8283 | static void | |
fba45db2 | 8284 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c | 8285 | { |
b5de0fa7 | 8286 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
8287 | } |
8288 | ||
c906108c | 8289 | static void |
fba45db2 | 8290 | enable_once_command (char *args, int from_tty) |
c906108c SS |
8291 | { |
8292 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
8293 | } | |
8294 | ||
8295 | static void | |
fba45db2 | 8296 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c | 8297 | { |
b5de0fa7 | 8298 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
8299 | } |
8300 | ||
c906108c | 8301 | static void |
fba45db2 | 8302 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
8303 | { |
8304 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
8305 | } | |
8306 | \f | |
fa8d40ab JJ |
8307 | static void |
8308 | set_breakpoint_cmd (char *args, int from_tty) | |
8309 | { | |
8310 | } | |
8311 | ||
8312 | static void | |
8313 | show_breakpoint_cmd (char *args, int from_tty) | |
8314 | { | |
8315 | } | |
8316 | ||
c906108c SS |
8317 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
8318 | ||
8319 | struct symtabs_and_lines | |
fba45db2 | 8320 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
8321 | { |
8322 | struct symtabs_and_lines sals; | |
8323 | if (string == 0) | |
8a3fe4f8 | 8324 | error (_("Empty line specification.")); |
c906108c SS |
8325 | if (default_breakpoint_valid) |
8326 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
8327 | default_breakpoint_symtab, |
8328 | default_breakpoint_line, | |
68219205 | 8329 | (char ***) NULL, NULL); |
c906108c SS |
8330 | else |
8331 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 8332 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c | 8333 | if (*string) |
8a3fe4f8 | 8334 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
8335 | return sals; |
8336 | } | |
8181d85f DJ |
8337 | |
8338 | /* Create and insert a raw software breakpoint at PC. Return an | |
8339 | identifier, which should be used to remove the breakpoint later. | |
8340 | In general, places which call this should be using something on the | |
8341 | breakpoint chain instead; this function should be eliminated | |
8342 | someday. */ | |
8343 | ||
8344 | void * | |
a6d9a66e | 8345 | deprecated_insert_raw_breakpoint (struct gdbarch *gdbarch, CORE_ADDR pc) |
8181d85f DJ |
8346 | { |
8347 | struct bp_target_info *bp_tgt; | |
8348 | ||
8349 | bp_tgt = xmalloc (sizeof (struct bp_target_info)); | |
8350 | memset (bp_tgt, 0, sizeof (struct bp_target_info)); | |
8351 | ||
8352 | bp_tgt->placed_address = pc; | |
a6d9a66e | 8353 | if (target_insert_breakpoint (gdbarch, bp_tgt) != 0) |
8181d85f DJ |
8354 | { |
8355 | /* Could not insert the breakpoint. */ | |
8356 | xfree (bp_tgt); | |
8357 | return NULL; | |
8358 | } | |
8359 | ||
8360 | return bp_tgt; | |
8361 | } | |
8362 | ||
8363 | /* Remove a breakpoint BP inserted by deprecated_insert_raw_breakpoint. */ | |
8364 | ||
8365 | int | |
a6d9a66e | 8366 | deprecated_remove_raw_breakpoint (struct gdbarch *gdbarch, void *bp) |
8181d85f DJ |
8367 | { |
8368 | struct bp_target_info *bp_tgt = bp; | |
8369 | int ret; | |
8370 | ||
a6d9a66e | 8371 | ret = target_remove_breakpoint (gdbarch, bp_tgt); |
8181d85f DJ |
8372 | xfree (bp_tgt); |
8373 | ||
8374 | return ret; | |
8375 | } | |
8376 | ||
8377 | /* One (or perhaps two) breakpoints used for software single stepping. */ | |
8378 | ||
8379 | static void *single_step_breakpoints[2]; | |
a6d9a66e | 8380 | static struct gdbarch *single_step_gdbarch[2]; |
8181d85f DJ |
8381 | |
8382 | /* Create and insert a breakpoint for software single step. */ | |
8383 | ||
8384 | void | |
a6d9a66e | 8385 | insert_single_step_breakpoint (struct gdbarch *gdbarch, CORE_ADDR next_pc) |
8181d85f DJ |
8386 | { |
8387 | void **bpt_p; | |
8388 | ||
8389 | if (single_step_breakpoints[0] == NULL) | |
a6d9a66e UW |
8390 | { |
8391 | bpt_p = &single_step_breakpoints[0]; | |
8392 | single_step_gdbarch[0] = gdbarch; | |
8393 | } | |
8181d85f DJ |
8394 | else |
8395 | { | |
8396 | gdb_assert (single_step_breakpoints[1] == NULL); | |
8397 | bpt_p = &single_step_breakpoints[1]; | |
a6d9a66e | 8398 | single_step_gdbarch[1] = gdbarch; |
8181d85f DJ |
8399 | } |
8400 | ||
8401 | /* NOTE drow/2006-04-11: A future improvement to this function would be | |
8402 | to only create the breakpoints once, and actually put them on the | |
8403 | breakpoint chain. That would let us use set_raw_breakpoint. We could | |
8404 | adjust the addresses each time they were needed. Doing this requires | |
8405 | corresponding changes elsewhere where single step breakpoints are | |
8406 | handled, however. So, for now, we use this. */ | |
8407 | ||
a6d9a66e | 8408 | *bpt_p = deprecated_insert_raw_breakpoint (gdbarch, next_pc); |
8181d85f | 8409 | if (*bpt_p == NULL) |
5af949e3 UW |
8410 | error (_("Could not insert single-step breakpoint at %s"), |
8411 | paddress (gdbarch, next_pc)); | |
8181d85f DJ |
8412 | } |
8413 | ||
8414 | /* Remove and delete any breakpoints used for software single step. */ | |
8415 | ||
8416 | void | |
8417 | remove_single_step_breakpoints (void) | |
8418 | { | |
8419 | gdb_assert (single_step_breakpoints[0] != NULL); | |
8420 | ||
8421 | /* See insert_single_step_breakpoint for more about this deprecated | |
8422 | call. */ | |
a6d9a66e UW |
8423 | deprecated_remove_raw_breakpoint (single_step_gdbarch[0], |
8424 | single_step_breakpoints[0]); | |
8425 | single_step_gdbarch[0] = NULL; | |
8181d85f DJ |
8426 | single_step_breakpoints[0] = NULL; |
8427 | ||
8428 | if (single_step_breakpoints[1] != NULL) | |
8429 | { | |
a6d9a66e UW |
8430 | deprecated_remove_raw_breakpoint (single_step_gdbarch[1], |
8431 | single_step_breakpoints[1]); | |
8432 | single_step_gdbarch[1] = NULL; | |
8181d85f DJ |
8433 | single_step_breakpoints[1] = NULL; |
8434 | } | |
8435 | } | |
8436 | ||
1aafd4da UW |
8437 | /* Check whether a software single-step breakpoint is inserted at PC. */ |
8438 | ||
8439 | static int | |
8440 | single_step_breakpoint_inserted_here_p (CORE_ADDR pc) | |
8441 | { | |
8442 | int i; | |
8443 | ||
8444 | for (i = 0; i < 2; i++) | |
8445 | { | |
8446 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
8447 | if (bp_tgt && bp_tgt->placed_address == pc) | |
8448 | return 1; | |
8449 | } | |
8450 | ||
8451 | return 0; | |
8452 | } | |
8453 | ||
1042e4c0 SS |
8454 | /* Tracepoint-specific operations. */ |
8455 | ||
8456 | /* Set tracepoint count to NUM. */ | |
8457 | static void | |
8458 | set_tracepoint_count (int num) | |
8459 | { | |
8460 | tracepoint_count = num; | |
4fa62494 | 8461 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
8462 | } |
8463 | ||
8464 | void | |
8465 | trace_command (char *arg, int from_tty) | |
8466 | { | |
a6d9a66e UW |
8467 | break_command_really (get_current_arch (), |
8468 | arg, | |
1042e4c0 SS |
8469 | NULL, 0, 1 /* parse arg */, |
8470 | 0 /* tempflag */, 0 /* hardwareflag */, | |
8471 | 1 /* traceflag */, | |
8472 | 0 /* Ignore count */, | |
8473 | pending_break_support, | |
8474 | NULL, | |
8475 | from_tty, | |
8476 | 1 /* enabled */); | |
8477 | set_tracepoint_count (breakpoint_count); | |
8478 | } | |
8479 | ||
8480 | /* Print information on tracepoint number TPNUM_EXP, or all if | |
8481 | omitted. */ | |
8482 | ||
8483 | static void | |
8484 | tracepoints_info (char *tpnum_exp, int from_tty) | |
8485 | { | |
8486 | struct breakpoint *b; | |
8487 | int tps_to_list = 0; | |
8488 | ||
8489 | /* In the no-arguments case, say "No tracepoints" if none found. */ | |
8490 | if (tpnum_exp == 0) | |
8491 | { | |
8492 | ALL_TRACEPOINTS (b) | |
8493 | { | |
8494 | if (b->number >= 0) | |
8495 | { | |
8496 | tps_to_list = 1; | |
8497 | break; | |
8498 | } | |
8499 | } | |
8500 | if (!tps_to_list) | |
8501 | { | |
8502 | ui_out_message (uiout, 0, "No tracepoints.\n"); | |
8503 | return; | |
8504 | } | |
8505 | } | |
8506 | ||
8507 | /* Otherwise be the same as "info break". */ | |
8508 | breakpoints_info (tpnum_exp, from_tty); | |
8509 | } | |
8510 | ||
8511 | /* The 'enable trace' command enables tracepoints. | |
8512 | Not supported by all targets. */ | |
8513 | static void | |
8514 | enable_trace_command (char *args, int from_tty) | |
8515 | { | |
8516 | enable_command (args, from_tty); | |
8517 | } | |
8518 | ||
8519 | /* The 'disable trace' command disables tracepoints. | |
8520 | Not supported by all targets. */ | |
8521 | static void | |
8522 | disable_trace_command (char *args, int from_tty) | |
8523 | { | |
8524 | disable_command (args, from_tty); | |
8525 | } | |
8526 | ||
8527 | /* Remove a tracepoint (or all if no argument) */ | |
8528 | static void | |
8529 | delete_trace_command (char *arg, int from_tty) | |
8530 | { | |
8531 | struct breakpoint *b, *temp; | |
8532 | ||
8533 | dont_repeat (); | |
8534 | ||
8535 | if (arg == 0) | |
8536 | { | |
8537 | int breaks_to_delete = 0; | |
8538 | ||
8539 | /* Delete all breakpoints if no argument. | |
8540 | Do not delete internal or call-dummy breakpoints, these | |
8541 | have to be deleted with an explicit breakpoint number argument. */ | |
8542 | ALL_TRACEPOINTS (b) | |
8543 | { | |
8544 | if (b->number >= 0) | |
8545 | { | |
8546 | breaks_to_delete = 1; | |
8547 | break; | |
8548 | } | |
8549 | } | |
8550 | ||
8551 | /* Ask user only if there are some breakpoints to delete. */ | |
8552 | if (!from_tty | |
8553 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
8554 | { | |
8555 | ALL_BREAKPOINTS_SAFE (b, temp) | |
8556 | { | |
059fb39f PM |
8557 | if (b->type == bp_tracepoint |
8558 | && b->number >= 0) | |
1042e4c0 SS |
8559 | delete_breakpoint (b); |
8560 | } | |
8561 | } | |
8562 | } | |
8563 | else | |
8564 | map_breakpoint_numbers (arg, delete_breakpoint); | |
8565 | } | |
8566 | ||
8567 | /* Set passcount for tracepoint. | |
8568 | ||
8569 | First command argument is passcount, second is tracepoint number. | |
8570 | If tracepoint number omitted, apply to most recently defined. | |
8571 | Also accepts special argument "all". */ | |
8572 | ||
8573 | static void | |
8574 | trace_pass_command (char *args, int from_tty) | |
8575 | { | |
8576 | struct breakpoint *t1 = (struct breakpoint *) -1, *t2; | |
8577 | unsigned int count; | |
8578 | int all = 0; | |
8579 | ||
8580 | if (args == 0 || *args == 0) | |
8581 | error (_("passcount command requires an argument (count + optional TP num)")); | |
8582 | ||
8583 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ | |
8584 | ||
8585 | while (*args && isspace ((int) *args)) | |
8586 | args++; | |
8587 | ||
8588 | if (*args && strncasecmp (args, "all", 3) == 0) | |
8589 | { | |
8590 | args += 3; /* Skip special argument "all". */ | |
8591 | all = 1; | |
8592 | if (*args) | |
8593 | error (_("Junk at end of arguments.")); | |
8594 | } | |
8595 | else | |
8596 | t1 = get_tracepoint_by_number (&args, 1, 1); | |
8597 | ||
8598 | do | |
8599 | { | |
8600 | if (t1) | |
8601 | { | |
8602 | ALL_TRACEPOINTS (t2) | |
8603 | if (t1 == (struct breakpoint *) -1 || t1 == t2) | |
8604 | { | |
8605 | t2->pass_count = count; | |
8606 | observer_notify_tracepoint_modified (t2->number); | |
8607 | if (from_tty) | |
8608 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
8609 | t2->number, count); | |
8610 | } | |
8611 | if (! all && *args) | |
8612 | t1 = get_tracepoint_by_number (&args, 1, 0); | |
8613 | } | |
8614 | } | |
8615 | while (*args); | |
8616 | } | |
8617 | ||
8618 | struct breakpoint * | |
8619 | get_tracepoint (int num) | |
8620 | { | |
8621 | struct breakpoint *t; | |
8622 | ||
8623 | ALL_TRACEPOINTS (t) | |
8624 | if (t->number == num) | |
8625 | return t; | |
8626 | ||
8627 | return NULL; | |
8628 | } | |
8629 | ||
8630 | /* Utility: parse a tracepoint number and look it up in the list. | |
8631 | If MULTI_P is true, there might be a range of tracepoints in ARG. | |
8632 | if OPTIONAL_P is true, then if the argument is missing, the most | |
8633 | recent tracepoint (tracepoint_count) is returned. */ | |
8634 | struct breakpoint * | |
8635 | get_tracepoint_by_number (char **arg, int multi_p, int optional_p) | |
8636 | { | |
8637 | extern int tracepoint_count; | |
8638 | struct breakpoint *t; | |
8639 | int tpnum; | |
8640 | char *instring = arg == NULL ? NULL : *arg; | |
8641 | ||
8642 | if (arg == NULL || *arg == NULL || ! **arg) | |
8643 | { | |
8644 | if (optional_p) | |
8645 | tpnum = tracepoint_count; | |
8646 | else | |
8647 | error_no_arg (_("tracepoint number")); | |
8648 | } | |
8649 | else | |
8650 | tpnum = multi_p ? get_number_or_range (arg) : get_number (arg); | |
8651 | ||
8652 | if (tpnum <= 0) | |
8653 | { | |
8654 | if (instring && *instring) | |
8655 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
8656 | instring); | |
8657 | else | |
8658 | printf_filtered (_("Tracepoint argument missing and no previous tracepoint\n")); | |
8659 | return NULL; | |
8660 | } | |
8661 | ||
8662 | ALL_TRACEPOINTS (t) | |
8663 | if (t->number == tpnum) | |
8664 | { | |
8665 | return t; | |
8666 | } | |
8667 | ||
8668 | /* FIXME: if we are in the middle of a range we don't want to give | |
8669 | a message. The current interface to get_number_or_range doesn't | |
8670 | allow us to discover this. */ | |
8671 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); | |
8672 | return NULL; | |
8673 | } | |
8674 | ||
8675 | /* save-tracepoints command */ | |
8676 | static void | |
8677 | tracepoint_save_command (char *args, int from_tty) | |
8678 | { | |
8679 | struct breakpoint *tp; | |
8680 | int any_tp = 0; | |
8681 | struct action_line *line; | |
8682 | FILE *fp; | |
8683 | char *i1 = " ", *i2 = " "; | |
8684 | char *indent, *actionline, *pathname; | |
8685 | char tmp[40]; | |
8686 | struct cleanup *cleanup; | |
8687 | ||
8688 | if (args == 0 || *args == 0) | |
8689 | error (_("Argument required (file name in which to save tracepoints)")); | |
8690 | ||
8691 | /* See if we have anything to save. */ | |
8692 | ALL_TRACEPOINTS (tp) | |
8693 | { | |
8694 | any_tp = 1; | |
8695 | break; | |
8696 | } | |
8697 | if (!any_tp) | |
8698 | { | |
8699 | warning (_("save-tracepoints: no tracepoints to save.")); | |
8700 | return; | |
8701 | } | |
8702 | ||
8703 | pathname = tilde_expand (args); | |
8704 | cleanup = make_cleanup (xfree, pathname); | |
059fb39f PM |
8705 | fp = fopen (pathname, "w"); |
8706 | if (!fp) | |
1042e4c0 SS |
8707 | error (_("Unable to open file '%s' for saving tracepoints (%s)"), |
8708 | args, safe_strerror (errno)); | |
8709 | make_cleanup_fclose (fp); | |
8710 | ||
8711 | ALL_TRACEPOINTS (tp) | |
8712 | { | |
8713 | if (tp->addr_string) | |
8714 | fprintf (fp, "trace %s\n", tp->addr_string); | |
8715 | else | |
8716 | { | |
8717 | sprintf_vma (tmp, tp->loc->address); | |
8718 | fprintf (fp, "trace *0x%s\n", tmp); | |
8719 | } | |
8720 | ||
8721 | if (tp->pass_count) | |
8722 | fprintf (fp, " passcount %d\n", tp->pass_count); | |
8723 | ||
8724 | if (tp->actions) | |
8725 | { | |
8726 | fprintf (fp, " actions\n"); | |
8727 | indent = i1; | |
8728 | for (line = tp->actions; line; line = line->next) | |
8729 | { | |
8730 | struct cmd_list_element *cmd; | |
8731 | ||
8732 | QUIT; /* allow user to bail out with ^C */ | |
8733 | actionline = line->action; | |
8734 | while (isspace ((int) *actionline)) | |
8735 | actionline++; | |
8736 | ||
8737 | fprintf (fp, "%s%s\n", indent, actionline); | |
8738 | if (*actionline != '#') /* skip for comment lines */ | |
8739 | { | |
8740 | cmd = lookup_cmd (&actionline, cmdlist, "", -1, 1); | |
8741 | if (cmd == 0) | |
8742 | error (_("Bad action list item: %s"), actionline); | |
8743 | if (cmd_cfunc_eq (cmd, while_stepping_pseudocommand)) | |
8744 | indent = i2; | |
8745 | else if (cmd_cfunc_eq (cmd, end_actions_pseudocommand)) | |
8746 | indent = i1; | |
8747 | } | |
8748 | } | |
8749 | } | |
8750 | } | |
8751 | do_cleanups (cleanup); | |
8752 | if (from_tty) | |
8753 | printf_filtered (_("Tracepoints saved to file '%s'.\n"), args); | |
8754 | return; | |
8755 | } | |
8756 | ||
8757 | /* Create a vector of all tracepoints. */ | |
8758 | ||
8759 | VEC(breakpoint_p) * | |
8760 | all_tracepoints () | |
8761 | { | |
8762 | VEC(breakpoint_p) *tp_vec = 0; | |
8763 | struct breakpoint *tp; | |
8764 | ||
8765 | ALL_TRACEPOINTS (tp) | |
8766 | { | |
8767 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
8768 | } | |
8769 | ||
8770 | return tp_vec; | |
8771 | } | |
8772 | ||
c906108c | 8773 | \f |
31e2b00f AS |
8774 | /* This help string is used for the break, hbreak, tbreak and thbreak commands. |
8775 | It is defined as a macro to prevent duplication. | |
8776 | COMMAND should be a string constant containing the name of the command. */ | |
8777 | #define BREAK_ARGS_HELP(command) \ | |
8778 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
8779 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
8780 | If a line number is specified, break at start of code for that line.\n\ | |
8781 | If a function is specified, break at start of code for that function.\n\ | |
8782 | If an address is specified, break at that exact address.\n\ | |
8783 | With no LOCATION, uses current execution address of selected stack frame.\n\ | |
8784 | This is useful for breaking on return to a stack frame.\n\ | |
8785 | \n\ | |
8786 | THREADNUM is the number from \"info threads\".\n\ | |
8787 | CONDITION is a boolean expression.\n\ | |
8788 | \n\ | |
8789 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
8790 | \n\ | |
8791 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
8792 | ||
44feb3ce TT |
8793 | /* List of subcommands for "catch". */ |
8794 | static struct cmd_list_element *catch_cmdlist; | |
8795 | ||
8796 | /* List of subcommands for "tcatch". */ | |
8797 | static struct cmd_list_element *tcatch_cmdlist; | |
8798 | ||
8799 | /* Like add_cmd, but add the command to both the "catch" and "tcatch" | |
8800 | lists, and pass some additional user data to the command function. */ | |
8801 | static void | |
8802 | add_catch_command (char *name, char *docstring, | |
8803 | void (*sfunc) (char *args, int from_tty, | |
8804 | struct cmd_list_element *command), | |
8805 | void *user_data_catch, | |
8806 | void *user_data_tcatch) | |
8807 | { | |
8808 | struct cmd_list_element *command; | |
8809 | ||
8810 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
8811 | &catch_cmdlist); | |
8812 | set_cmd_sfunc (command, sfunc); | |
8813 | set_cmd_context (command, user_data_catch); | |
8814 | ||
8815 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
8816 | &tcatch_cmdlist); | |
8817 | set_cmd_sfunc (command, sfunc); | |
8818 | set_cmd_context (command, user_data_tcatch); | |
8819 | } | |
8820 | ||
c906108c | 8821 | void |
fba45db2 | 8822 | _initialize_breakpoint (void) |
c906108c | 8823 | { |
fa8d40ab JJ |
8824 | static struct cmd_list_element *breakpoint_set_cmdlist; |
8825 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
c906108c SS |
8826 | struct cmd_list_element *c; |
8827 | ||
84acb35a | 8828 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
84acb35a | 8829 | |
c906108c SS |
8830 | breakpoint_chain = 0; |
8831 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
8832 | before a breakpoint is set. */ | |
8833 | breakpoint_count = 0; | |
8834 | ||
1042e4c0 SS |
8835 | tracepoint_count = 0; |
8836 | ||
1bedd215 AC |
8837 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
8838 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
8839 | Usage is `ignore N COUNT'.")); | |
c906108c | 8840 | if (xdb_commands) |
c5aa993b | 8841 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 8842 | |
1bedd215 AC |
8843 | add_com ("commands", class_breakpoint, commands_command, _("\ |
8844 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
8845 | Give breakpoint number as argument after \"commands\".\n\ |
8846 | With no argument, the targeted breakpoint is the last one set.\n\ | |
8847 | The commands themselves follow starting on the next line.\n\ | |
8848 | Type a line containing \"end\" to indicate the end of them.\n\ | |
8849 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 8850 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 8851 | |
1bedd215 AC |
8852 | add_com ("condition", class_breakpoint, condition_command, _("\ |
8853 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 8854 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 8855 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 8856 | |
1bedd215 | 8857 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 8858 | Set a temporary breakpoint.\n\ |
c906108c SS |
8859 | Like \"break\" except the breakpoint is only temporary,\n\ |
8860 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
8861 | by using \"enable delete\" on the breakpoint number.\n\ |
8862 | \n" | |
8863 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 8864 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 8865 | |
1bedd215 | 8866 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
31e2b00f | 8867 | Set a hardware assisted breakpoint.\n\ |
c906108c | 8868 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
8869 | some target hardware may not have this support.\n\ |
8870 | \n" | |
8871 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 8872 | set_cmd_completer (c, location_completer); |
c906108c | 8873 | |
1bedd215 | 8874 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 8875 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 8876 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
8877 | so it will be deleted when hit.\n\ |
8878 | \n" | |
8879 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 8880 | set_cmd_completer (c, location_completer); |
c906108c | 8881 | |
1bedd215 AC |
8882 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
8883 | Enable some breakpoints.\n\ | |
c906108c SS |
8884 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8885 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8886 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8887 | With a subcommand you can enable temporarily."), |
c906108c SS |
8888 | &enablelist, "enable ", 1, &cmdlist); |
8889 | if (xdb_commands) | |
1bedd215 AC |
8890 | add_com ("ab", class_breakpoint, enable_command, _("\ |
8891 | Enable some breakpoints.\n\ | |
c906108c SS |
8892 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8893 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8894 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8895 | With a subcommand you can enable temporarily.")); |
c906108c SS |
8896 | |
8897 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
8898 | ||
1bedd215 AC |
8899 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
8900 | Enable some breakpoints.\n\ | |
c906108c SS |
8901 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8902 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8903 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 8904 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 8905 | |
1a966eab AC |
8906 | add_cmd ("once", no_class, enable_once_command, _("\ |
8907 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8908 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8909 | &enablebreaklist); |
8910 | ||
1a966eab AC |
8911 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8912 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8913 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8914 | &enablebreaklist); |
8915 | ||
1a966eab AC |
8916 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8917 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8918 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8919 | &enablelist); |
8920 | ||
1a966eab AC |
8921 | add_cmd ("once", no_class, enable_once_command, _("\ |
8922 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8923 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8924 | &enablelist); |
8925 | ||
1bedd215 AC |
8926 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
8927 | Disable some breakpoints.\n\ | |
c906108c SS |
8928 | Arguments are breakpoint numbers with spaces in between.\n\ |
8929 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 8930 | A disabled breakpoint is not forgotten, but has no effect until reenabled."), |
c906108c SS |
8931 | &disablelist, "disable ", 1, &cmdlist); |
8932 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
8933 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
8934 | if (xdb_commands) | |
1bedd215 AC |
8935 | add_com ("sb", class_breakpoint, disable_command, _("\ |
8936 | Disable some breakpoints.\n\ | |
c906108c SS |
8937 | Arguments are breakpoint numbers with spaces in between.\n\ |
8938 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 8939 | A disabled breakpoint is not forgotten, but has no effect until reenabled.")); |
c906108c | 8940 | |
1a966eab AC |
8941 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
8942 | Disable some breakpoints.\n\ | |
c906108c SS |
8943 | Arguments are breakpoint numbers with spaces in between.\n\ |
8944 | To disable all breakpoints, give no argument.\n\ | |
8945 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
1a966eab | 8946 | This command may be abbreviated \"disable\"."), |
c906108c SS |
8947 | &disablelist); |
8948 | ||
1bedd215 AC |
8949 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
8950 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
8951 | Arguments are breakpoint numbers with spaces in between.\n\ |
8952 | To delete all breakpoints, give no argument.\n\ | |
8953 | \n\ | |
8954 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 8955 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
8956 | &deletelist, "delete ", 1, &cmdlist); |
8957 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 8958 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 8959 | if (xdb_commands) |
1bedd215 AC |
8960 | add_com ("db", class_breakpoint, delete_command, _("\ |
8961 | Delete some breakpoints.\n\ | |
c906108c | 8962 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 8963 | To delete all breakpoints, give no argument.\n")); |
c906108c | 8964 | |
1a966eab AC |
8965 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
8966 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
8967 | Arguments are breakpoint numbers with spaces in between.\n\ |
8968 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 8969 | This command may be abbreviated \"delete\"."), |
c906108c SS |
8970 | &deletelist); |
8971 | ||
1bedd215 AC |
8972 | add_com ("clear", class_breakpoint, clear_command, _("\ |
8973 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
8974 | Argument may be line number, function name, or \"*\" and an address.\n\ |
8975 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
8976 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
8977 | If an address is specified, breakpoints at that address are cleared.\n\ |
8978 | \n\ | |
8979 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
8980 | is executing in.\n\ |
8981 | \n\ | |
1bedd215 | 8982 | See also the \"delete\" command which clears breakpoints by number.")); |
c906108c | 8983 | |
1bedd215 | 8984 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
8985 | Set breakpoint at specified line or function.\n" |
8986 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 8987 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 8988 | |
c906108c SS |
8989 | add_com_alias ("b", "break", class_run, 1); |
8990 | add_com_alias ("br", "break", class_run, 1); | |
8991 | add_com_alias ("bre", "break", class_run, 1); | |
8992 | add_com_alias ("brea", "break", class_run, 1); | |
8993 | ||
7681d515 PM |
8994 | if (xdb_commands) |
8995 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
c906108c SS |
8996 | |
8997 | if (dbx_commands) | |
8998 | { | |
1bedd215 AC |
8999 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
9000 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
9001 | &stoplist, "stop ", 1, &cmdlist); |
9002 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 9003 | _("Break in function or address."), &stoplist); |
c5aa993b | 9004 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 9005 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
9006 | add_com ("status", class_info, breakpoints_info, _("\ |
9007 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
9008 | The \"Type\" column indicates one of:\n\ |
9009 | \tbreakpoint - normal breakpoint\n\ | |
9010 | \twatchpoint - watchpoint\n\ | |
9011 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
9012 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
9013 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
9014 | address and file/line number respectively.\n\ |
9015 | \n\ | |
9016 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
9017 | are set to the address of the last breakpoint listed unless the command\n\ |
9018 | is prefixed with \"server \".\n\n\ | |
c906108c | 9019 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 9020 | breakpoint set.")); |
c906108c SS |
9021 | } |
9022 | ||
1bedd215 AC |
9023 | add_info ("breakpoints", breakpoints_info, _("\ |
9024 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
9025 | The \"Type\" column indicates one of:\n\ |
9026 | \tbreakpoint - normal breakpoint\n\ | |
9027 | \twatchpoint - watchpoint\n\ | |
9028 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
9029 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
9030 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
9031 | address and file/line number respectively.\n\ |
9032 | \n\ | |
9033 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
9034 | are set to the address of the last breakpoint listed unless the command\n\ |
9035 | is prefixed with \"server \".\n\n\ | |
c906108c | 9036 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 9037 | breakpoint set.")); |
c906108c SS |
9038 | |
9039 | if (xdb_commands) | |
1bedd215 AC |
9040 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
9041 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
9042 | The \"Type\" column indicates one of:\n\ |
9043 | \tbreakpoint - normal breakpoint\n\ | |
9044 | \twatchpoint - watchpoint\n\ | |
9045 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
9046 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
9047 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
9048 | address and file/line number respectively.\n\ |
9049 | \n\ | |
9050 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
9051 | are set to the address of the last breakpoint listed unless the command\n\ |
9052 | is prefixed with \"server \".\n\n\ | |
c906108c | 9053 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 9054 | breakpoint set.")); |
c906108c | 9055 | |
1a966eab AC |
9056 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
9057 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
9058 | The \"Type\" column indicates one of:\n\ |
9059 | \tbreakpoint - normal breakpoint\n\ | |
9060 | \twatchpoint - watchpoint\n\ | |
9061 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
9062 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
9063 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
9064 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
9065 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
9066 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
9067 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
9068 | address and file/line number respectively.\n\ |
9069 | \n\ | |
9070 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
9071 | are set to the address of the last breakpoint listed unless the command\n\ |
9072 | is prefixed with \"server \".\n\n\ | |
c906108c | 9073 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 9074 | breakpoint set."), |
c906108c SS |
9075 | &maintenanceinfolist); |
9076 | ||
44feb3ce TT |
9077 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
9078 | Set catchpoints to catch events."), | |
9079 | &catch_cmdlist, "catch ", | |
9080 | 0/*allow-unknown*/, &cmdlist); | |
9081 | ||
9082 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
9083 | Set temporary catchpoints to catch events."), | |
9084 | &tcatch_cmdlist, "tcatch ", | |
9085 | 0/*allow-unknown*/, &cmdlist); | |
9086 | ||
9087 | /* Add catch and tcatch sub-commands. */ | |
9088 | add_catch_command ("catch", _("\ | |
9089 | Catch an exception, when caught.\n\ | |
9090 | With an argument, catch only exceptions with the given name."), | |
9091 | catch_catch_command, | |
9092 | CATCH_PERMANENT, | |
9093 | CATCH_TEMPORARY); | |
9094 | add_catch_command ("throw", _("\ | |
9095 | Catch an exception, when thrown.\n\ | |
9096 | With an argument, catch only exceptions with the given name."), | |
9097 | catch_throw_command, | |
9098 | CATCH_PERMANENT, | |
9099 | CATCH_TEMPORARY); | |
9100 | add_catch_command ("fork", _("Catch calls to fork."), | |
9101 | catch_fork_command_1, | |
9102 | (void *) (uintptr_t) catch_fork_permanent, | |
9103 | (void *) (uintptr_t) catch_fork_temporary); | |
9104 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
9105 | catch_fork_command_1, | |
9106 | (void *) (uintptr_t) catch_vfork_permanent, | |
9107 | (void *) (uintptr_t) catch_vfork_temporary); | |
9108 | add_catch_command ("exec", _("Catch calls to exec."), | |
9109 | catch_exec_command_1, | |
9110 | CATCH_PERMANENT, | |
9111 | CATCH_TEMPORARY); | |
44feb3ce TT |
9112 | add_catch_command ("exception", _("\ |
9113 | Catch Ada exceptions, when raised.\n\ | |
9114 | With an argument, catch only exceptions with the given name."), | |
9115 | catch_ada_exception_command, | |
9116 | CATCH_PERMANENT, | |
9117 | CATCH_TEMPORARY); | |
9118 | add_catch_command ("assert", _("\ | |
9119 | Catch failed Ada assertions, when raised.\n\ | |
9120 | With an argument, catch only exceptions with the given name."), | |
9121 | catch_assert_command, | |
9122 | CATCH_PERMANENT, | |
9123 | CATCH_TEMPORARY); | |
c5aa993b | 9124 | |
1bedd215 AC |
9125 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
9126 | Set a watchpoint for an expression.\n\ | |
c906108c | 9127 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 9128 | an expression changes.")); |
65d12d83 | 9129 | set_cmd_completer (c, expression_completer); |
c906108c | 9130 | |
1bedd215 AC |
9131 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
9132 | Set a read watchpoint for an expression.\n\ | |
c906108c | 9133 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 9134 | an expression is read.")); |
65d12d83 | 9135 | set_cmd_completer (c, expression_completer); |
c906108c | 9136 | |
1bedd215 AC |
9137 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
9138 | Set a watchpoint for an expression.\n\ | |
c906108c | 9139 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 9140 | an expression is either read or written.")); |
65d12d83 | 9141 | set_cmd_completer (c, expression_completer); |
c906108c SS |
9142 | |
9143 | add_info ("watchpoints", breakpoints_info, | |
1bedd215 | 9144 | _("Synonym for ``info breakpoints''.")); |
c906108c SS |
9145 | |
9146 | ||
920d2a44 AC |
9147 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
9148 | respond to changes - contrary to the description. */ | |
85c07804 AC |
9149 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
9150 | &can_use_hw_watchpoints, _("\ | |
9151 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
9152 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
9153 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
9154 | such is available. (However, any hardware watchpoints that were\n\ | |
9155 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
9156 | hardware.)"), |
9157 | NULL, | |
920d2a44 | 9158 | show_can_use_hw_watchpoints, |
85c07804 | 9159 | &setlist, &showlist); |
c906108c SS |
9160 | |
9161 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 9162 | |
1042e4c0 SS |
9163 | /* Tracepoint manipulation commands. */ |
9164 | ||
9165 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
9166 | Set a tracepoint at specified line or function.\n\ | |
9167 | \n" | |
9168 | BREAK_ARGS_HELP ("trace") "\n\ | |
9169 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
9170 | set_cmd_completer (c, location_completer); | |
9171 | ||
9172 | add_com_alias ("tp", "trace", class_alias, 0); | |
9173 | add_com_alias ("tr", "trace", class_alias, 1); | |
9174 | add_com_alias ("tra", "trace", class_alias, 1); | |
9175 | add_com_alias ("trac", "trace", class_alias, 1); | |
9176 | ||
9177 | add_info ("tracepoints", tracepoints_info, _("\ | |
9178 | Status of tracepoints, or tracepoint number NUMBER.\n\ | |
9179 | Convenience variable \"$tpnum\" contains the number of the\n\ | |
9180 | last tracepoint set.")); | |
9181 | ||
9182 | add_info_alias ("tp", "tracepoints", 1); | |
9183 | ||
9184 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
9185 | Delete specified tracepoints.\n\ | |
9186 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
9187 | No argument means delete all tracepoints."), | |
9188 | &deletelist); | |
9189 | ||
9190 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
9191 | Disable specified tracepoints.\n\ | |
9192 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
9193 | No argument means disable all tracepoints."), | |
9194 | &disablelist); | |
9195 | deprecate_cmd (c, "disable"); | |
9196 | ||
9197 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
9198 | Enable specified tracepoints.\n\ | |
9199 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
9200 | No argument means enable all tracepoints."), | |
9201 | &enablelist); | |
9202 | deprecate_cmd (c, "enable"); | |
9203 | ||
9204 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
9205 | Set the passcount for a tracepoint.\n\ | |
9206 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
9207 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
9208 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
9209 | ||
9210 | c = add_com ("save-tracepoints", class_trace, tracepoint_save_command, _("\ | |
9211 | Save current tracepoint definitions as a script.\n\ | |
9212 | Use the 'source' command in another debug session to restore them.")); | |
9213 | set_cmd_completer (c, filename_completer); | |
9214 | ||
1bedd215 | 9215 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
9216 | Breakpoint specific settings\n\ |
9217 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 9218 | pending breakpoint behavior"), |
fa8d40ab JJ |
9219 | &breakpoint_set_cmdlist, "set breakpoint ", |
9220 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 9221 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
9222 | Breakpoint specific settings\n\ |
9223 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 9224 | pending breakpoint behavior"), |
fa8d40ab JJ |
9225 | &breakpoint_show_cmdlist, "show breakpoint ", |
9226 | 0/*allow-unknown*/, &showlist); | |
9227 | ||
7915a72c AC |
9228 | add_setshow_auto_boolean_cmd ("pending", no_class, |
9229 | &pending_break_support, _("\ | |
9230 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
9231 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
9232 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
9233 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
9234 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 9235 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 9236 | NULL, |
920d2a44 | 9237 | show_pending_break_support, |
6e1d7d6c AC |
9238 | &breakpoint_set_cmdlist, |
9239 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
9240 | |
9241 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
9242 | |
9243 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
9244 | &automatic_hardware_breakpoints, _("\ | |
9245 | Set automatic usage of hardware breakpoints."), _("\ | |
9246 | Show automatic usage of hardware breakpoints."), _("\ | |
9247 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
9248 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
9249 | a warning will be emitted for such breakpoints."), | |
9250 | NULL, | |
9251 | show_automatic_hardware_breakpoints, | |
9252 | &breakpoint_set_cmdlist, | |
9253 | &breakpoint_show_cmdlist); | |
74960c60 | 9254 | |
33e5cbd6 PA |
9255 | add_setshow_enum_cmd ("always-inserted", class_support, |
9256 | always_inserted_enums, &always_inserted_mode, _("\ | |
74960c60 VP |
9257 | Set mode for inserting breakpoints."), _("\ |
9258 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
9259 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
9260 | resumed, and removed when execution stops. When this mode is on,\n\ | |
9261 | breakpoints are inserted immediately and removed only when the user\n\ | |
9262 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
9263 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
9264 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
9265 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
9266 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
74960c60 VP |
9267 | NULL, |
9268 | &show_always_inserted_mode, | |
9269 | &breakpoint_set_cmdlist, | |
9270 | &breakpoint_show_cmdlist); | |
765dc015 VP |
9271 | |
9272 | automatic_hardware_breakpoints = 1; | |
f3b1572e PA |
9273 | |
9274 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
c906108c | 9275 | } |