Commit | Line | Data |
---|---|---|
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" | |
23 | #include <ctype.h> | |
776592bf | 24 | #include "hashtab.h" |
c906108c SS |
25 | #include "symtab.h" |
26 | #include "frame.h" | |
27 | #include "breakpoint.h" | |
1042e4c0 | 28 | #include "tracepoint.h" |
c906108c SS |
29 | #include "gdbtypes.h" |
30 | #include "expression.h" | |
31 | #include "gdbcore.h" | |
32 | #include "gdbcmd.h" | |
33 | #include "value.h" | |
34 | #include "command.h" | |
35 | #include "inferior.h" | |
36 | #include "gdbthread.h" | |
37 | #include "target.h" | |
38 | #include "language.h" | |
39 | #include "gdb_string.h" | |
40 | #include "demangle.h" | |
41 | #include "annotate.h" | |
42 | #include "symfile.h" | |
43 | #include "objfiles.h" | |
0378c332 | 44 | #include "source.h" |
c5f0f3d0 | 45 | #include "linespec.h" |
c94fdfd0 | 46 | #include "completer.h" |
5b7f31a4 | 47 | #include "gdb.h" |
8b93c638 | 48 | #include "ui-out.h" |
e1507482 | 49 | #include "cli/cli-script.h" |
0225421b | 50 | #include "gdb_assert.h" |
fe898f56 | 51 | #include "block.h" |
a77053c2 | 52 | #include "solib.h" |
84acb35a JJ |
53 | #include "solist.h" |
54 | #include "observer.h" | |
60250e8b | 55 | #include "exceptions.h" |
765dc015 | 56 | #include "memattr.h" |
f7f9143b | 57 | #include "ada-lang.h" |
d1aa2f50 | 58 | #include "top.h" |
fa4727a6 | 59 | #include "wrapper.h" |
79a45b7d | 60 | #include "valprint.h" |
c906108c | 61 | |
1042e4c0 SS |
62 | /* readline include files */ |
63 | #include "readline/readline.h" | |
64 | #include "readline/history.h" | |
65 | ||
66 | /* readline defines this. */ | |
67 | #undef savestring | |
68 | ||
034dad6f | 69 | #include "mi/mi-common.h" |
104c1213 | 70 | |
44feb3ce TT |
71 | /* Arguments to pass as context to some catch command handlers. */ |
72 | #define CATCH_PERMANENT ((void *) (uintptr_t) 0) | |
73 | #define CATCH_TEMPORARY ((void *) (uintptr_t) 1) | |
c906108c | 74 | |
44feb3ce | 75 | /* Prototypes for local functions. */ |
c906108c | 76 | |
a14ed312 | 77 | static void enable_delete_command (char *, int); |
c906108c | 78 | |
a14ed312 | 79 | static void enable_delete_breakpoint (struct breakpoint *); |
c906108c | 80 | |
a14ed312 | 81 | static void enable_once_command (char *, int); |
c906108c | 82 | |
a14ed312 | 83 | static void enable_once_breakpoint (struct breakpoint *); |
c906108c | 84 | |
a14ed312 | 85 | static void disable_command (char *, int); |
c906108c | 86 | |
a14ed312 | 87 | static void enable_command (char *, int); |
c906108c | 88 | |
a14ed312 | 89 | static void map_breakpoint_numbers (char *, void (*)(struct breakpoint *)); |
c906108c | 90 | |
a14ed312 | 91 | static void ignore_command (char *, int); |
c906108c | 92 | |
4efb68b1 | 93 | static int breakpoint_re_set_one (void *); |
c906108c | 94 | |
a14ed312 | 95 | static void clear_command (char *, int); |
c906108c | 96 | |
a14ed312 | 97 | static void catch_command (char *, int); |
c906108c | 98 | |
a14ed312 | 99 | static void watch_command (char *, int); |
c906108c | 100 | |
a14ed312 | 101 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 102 | |
98deb0da | 103 | static void break_command_1 (char *, int, int); |
c906108c | 104 | |
a14ed312 | 105 | static void mention (struct breakpoint *); |
c906108c | 106 | |
4d28f7a8 | 107 | struct breakpoint *set_raw_breakpoint (struct symtab_and_line, enum bptype); |
c906108c | 108 | |
9f60f21b | 109 | static void check_duplicates (struct breakpoint *); |
c906108c | 110 | |
76897487 KB |
111 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
112 | ||
88f7da05 KB |
113 | static CORE_ADDR adjust_breakpoint_address (CORE_ADDR bpaddr, |
114 | enum bptype bptype); | |
76897487 | 115 | |
714835d5 | 116 | static void describe_other_breakpoints (CORE_ADDR, struct obj_section *, int); |
c906108c | 117 | |
a14ed312 | 118 | static void breakpoints_info (char *, int); |
c906108c | 119 | |
a14ed312 | 120 | static void breakpoint_1 (int, int); |
c906108c | 121 | |
89f9893c | 122 | static bpstat bpstat_alloc (const struct bp_location *, bpstat); |
c906108c | 123 | |
4efb68b1 | 124 | static int breakpoint_cond_eval (void *); |
c906108c | 125 | |
4efb68b1 | 126 | static void cleanup_executing_breakpoints (void *); |
c906108c | 127 | |
a14ed312 | 128 | static void commands_command (char *, int); |
c906108c | 129 | |
a14ed312 | 130 | static void condition_command (char *, int); |
c906108c | 131 | |
a14ed312 | 132 | static int get_number_trailer (char **, int); |
c906108c | 133 | |
a14ed312 | 134 | void set_breakpoint_count (int); |
c906108c | 135 | |
c5aa993b JM |
136 | typedef enum |
137 | { | |
138 | mark_inserted, | |
139 | mark_uninserted | |
140 | } | |
141 | insertion_state_t; | |
c906108c | 142 | |
0bde7532 | 143 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
c906108c | 144 | |
a14ed312 | 145 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
146 | |
147 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 148 | |
4efb68b1 | 149 | static int watchpoint_check (void *); |
c906108c | 150 | |
a14ed312 | 151 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 152 | |
a14ed312 | 153 | static int hw_breakpoint_used_count (void); |
c906108c | 154 | |
a14ed312 | 155 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 156 | |
a14ed312 | 157 | static void hbreak_command (char *, int); |
c906108c | 158 | |
a14ed312 | 159 | static void thbreak_command (char *, int); |
c906108c | 160 | |
a14ed312 | 161 | static void watch_command_1 (char *, int, int); |
c906108c | 162 | |
a14ed312 | 163 | static void rwatch_command (char *, int); |
c906108c | 164 | |
a14ed312 | 165 | static void awatch_command (char *, int); |
c906108c | 166 | |
a14ed312 | 167 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 168 | |
a14ed312 | 169 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 170 | |
a14ed312 | 171 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 172 | |
a14ed312 | 173 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 174 | |
a14ed312 | 175 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 176 | |
a14ed312 | 177 | static char *ep_parse_optional_filename (char **arg); |
7a292a7a | 178 | |
d85310f7 MS |
179 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
180 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 181 | |
a14ed312 | 182 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 183 | |
a14ed312 | 184 | static void ep_skip_leading_whitespace (char **s); |
7a292a7a | 185 | |
1aafd4da UW |
186 | static int single_step_breakpoint_inserted_here_p (CORE_ADDR pc); |
187 | ||
fe3f5fa8 VP |
188 | static void free_bp_location (struct bp_location *loc); |
189 | ||
39d61571 | 190 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 191 | |
b60e7edf | 192 | static void update_global_location_list (int); |
a5606eee | 193 | |
b60e7edf | 194 | static void update_global_location_list_nothrow (int); |
74960c60 VP |
195 | |
196 | static int is_hardware_watchpoint (struct breakpoint *bpt); | |
197 | ||
198 | static void insert_breakpoint_locations (void); | |
a5606eee | 199 | |
1042e4c0 SS |
200 | static void tracepoints_info (char *, int); |
201 | ||
202 | static void delete_trace_command (char *, int); | |
203 | ||
204 | static void enable_trace_command (char *, int); | |
205 | ||
206 | static void disable_trace_command (char *, int); | |
207 | ||
208 | static void trace_pass_command (char *, int); | |
209 | ||
3daf8fe5 JG |
210 | static void skip_prologue_sal (struct symtab_and_line *sal); |
211 | ||
212 | ||
f3b1572e PA |
213 | /* Flag indicating that a command has proceeded the inferior past the |
214 | current breakpoint. */ | |
215 | ||
216 | static int breakpoint_proceeded; | |
217 | ||
2cec12e5 AR |
218 | static const char * |
219 | bpdisp_text (enum bpdisp disp) | |
220 | { | |
221 | /* NOTE: the following values are a part of MI protocol and represent | |
222 | values of 'disp' field returned when inferior stops at a breakpoint. */ | |
223 | static char *bpdisps[] = {"del", "dstp", "dis", "keep"}; | |
224 | return bpdisps[(int) disp]; | |
225 | } | |
c906108c | 226 | |
2cec12e5 | 227 | /* Prototypes for exported functions. */ |
c906108c SS |
228 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
229 | if such is available. */ | |
230 | static int can_use_hw_watchpoints; | |
231 | ||
920d2a44 AC |
232 | static void |
233 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
234 | struct cmd_list_element *c, | |
235 | const char *value) | |
236 | { | |
237 | fprintf_filtered (file, _("\ | |
238 | Debugger's willingness to use watchpoint hardware is %s.\n"), | |
239 | value); | |
240 | } | |
241 | ||
fa8d40ab JJ |
242 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
243 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
244 | for unrecognized breakpoint locations. | |
245 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ | |
246 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
247 | static void |
248 | show_pending_break_support (struct ui_file *file, int from_tty, | |
249 | struct cmd_list_element *c, | |
250 | const char *value) | |
251 | { | |
252 | fprintf_filtered (file, _("\ | |
253 | Debugger's behavior regarding pending breakpoints is %s.\n"), | |
254 | value); | |
255 | } | |
fa8d40ab | 256 | |
765dc015 VP |
257 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
258 | set with "break" but falling in read-only memory. | |
259 | If 0, gdb will warn about such breakpoints, but won't automatically | |
260 | use hardware breakpoints. */ | |
261 | static int automatic_hardware_breakpoints; | |
262 | static void | |
263 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
264 | struct cmd_list_element *c, | |
265 | const char *value) | |
266 | { | |
267 | fprintf_filtered (file, _("\ | |
268 | Automatic usage of hardware breakpoints is %s.\n"), | |
269 | value); | |
270 | } | |
271 | ||
33e5cbd6 PA |
272 | /* If on, gdb will keep breakpoints inserted even as inferior is |
273 | stopped, and immediately insert any new breakpoints. If off, gdb | |
274 | will insert breakpoints into inferior only when resuming it, and | |
275 | will remove breakpoints upon stop. If auto, GDB will behave as ON | |
276 | if in non-stop mode, and as OFF if all-stop mode.*/ | |
277 | ||
278 | static const char always_inserted_auto[] = "auto"; | |
279 | static const char always_inserted_on[] = "on"; | |
280 | static const char always_inserted_off[] = "off"; | |
281 | static const char *always_inserted_enums[] = { | |
282 | always_inserted_auto, | |
283 | always_inserted_off, | |
284 | always_inserted_on, | |
285 | NULL | |
286 | }; | |
287 | static const char *always_inserted_mode = always_inserted_auto; | |
288 | static void | |
74960c60 | 289 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 290 | struct cmd_list_element *c, const char *value) |
74960c60 | 291 | { |
33e5cbd6 PA |
292 | if (always_inserted_mode == always_inserted_auto) |
293 | fprintf_filtered (file, _("\ | |
294 | Always inserted breakpoint mode is %s (currently %s).\n"), | |
295 | value, | |
296 | breakpoints_always_inserted_mode () ? "on" : "off"); | |
297 | else | |
298 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), value); | |
74960c60 VP |
299 | } |
300 | ||
33e5cbd6 PA |
301 | int |
302 | breakpoints_always_inserted_mode (void) | |
303 | { | |
304 | return (always_inserted_mode == always_inserted_on | |
305 | || (always_inserted_mode == always_inserted_auto && non_stop)); | |
306 | } | |
765dc015 | 307 | |
a14ed312 | 308 | void _initialize_breakpoint (void); |
c906108c | 309 | |
c906108c SS |
310 | /* Are we executing breakpoint commands? */ |
311 | static int executing_breakpoint_commands; | |
312 | ||
c02f5703 MS |
313 | /* Are overlay event breakpoints enabled? */ |
314 | static int overlay_events_enabled; | |
315 | ||
c906108c SS |
316 | /* Walk the following statement or block through all breakpoints. |
317 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
318 | breakpoint. */ | |
319 | ||
5c44784c | 320 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 321 | |
5c44784c JM |
322 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
323 | for (B = breakpoint_chain; \ | |
324 | B ? (TMP=B->next, 1): 0; \ | |
325 | B = TMP) | |
c906108c | 326 | |
7cc221ef DJ |
327 | /* Similar iterators for the low-level breakpoints. */ |
328 | ||
0d381245 | 329 | #define ALL_BP_LOCATIONS(B) for (B = bp_location_chain; B; B = B->global_next) |
7cc221ef DJ |
330 | |
331 | #define ALL_BP_LOCATIONS_SAFE(B,TMP) \ | |
332 | for (B = bp_location_chain; \ | |
0d381245 | 333 | B ? (TMP=B->global_next, 1): 0; \ |
7cc221ef DJ |
334 | B = TMP) |
335 | ||
1042e4c0 SS |
336 | /* Iterator for tracepoints only. */ |
337 | ||
338 | #define ALL_TRACEPOINTS(B) \ | |
339 | for (B = breakpoint_chain; B; B = B->next) \ | |
340 | if ((B)->type == bp_tracepoint) | |
341 | ||
7cc221ef | 342 | /* Chains of all breakpoints defined. */ |
c906108c SS |
343 | |
344 | struct breakpoint *breakpoint_chain; | |
345 | ||
7cc221ef DJ |
346 | struct bp_location *bp_location_chain; |
347 | ||
20874c92 VP |
348 | /* The locations that no longer correspond to any breakpoint, |
349 | unlinked from bp_location_chain, but for which a hit | |
350 | may still be reported by a target. */ | |
351 | VEC(bp_location_p) *moribund_locations = NULL; | |
352 | ||
c906108c SS |
353 | /* Number of last breakpoint made. */ |
354 | ||
355 | int breakpoint_count; | |
356 | ||
1042e4c0 SS |
357 | /* Number of last tracepoint made. */ |
358 | ||
359 | int tracepoint_count; | |
360 | ||
468d015d JJ |
361 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
362 | static int | |
363 | breakpoint_enabled (struct breakpoint *b) | |
364 | { | |
0d381245 | 365 | return (b->enable_state == bp_enabled); |
468d015d JJ |
366 | } |
367 | ||
c906108c SS |
368 | /* Set breakpoint count to NUM. */ |
369 | ||
370 | void | |
fba45db2 | 371 | set_breakpoint_count (int num) |
c906108c SS |
372 | { |
373 | breakpoint_count = num; | |
4fa62494 | 374 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
375 | } |
376 | ||
377 | /* Used in run_command to zero the hit count when a new run starts. */ | |
378 | ||
379 | void | |
fba45db2 | 380 | clear_breakpoint_hit_counts (void) |
c906108c SS |
381 | { |
382 | struct breakpoint *b; | |
383 | ||
384 | ALL_BREAKPOINTS (b) | |
385 | b->hit_count = 0; | |
386 | } | |
387 | ||
388 | /* Default address, symtab and line to put a breakpoint at | |
389 | for "break" command with no arg. | |
390 | if default_breakpoint_valid is zero, the other three are | |
391 | not valid, and "break" with no arg is an error. | |
392 | ||
393 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
394 | ||
395 | int default_breakpoint_valid; | |
396 | CORE_ADDR default_breakpoint_address; | |
397 | struct symtab *default_breakpoint_symtab; | |
398 | int default_breakpoint_line; | |
399 | \f | |
400 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
401 | Advance *PP after the string and any trailing whitespace. | |
402 | ||
403 | Currently the string can either be a number or "$" followed by the name | |
404 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c | 405 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
40c03ae8 EZ |
406 | |
407 | If the string is a NULL pointer, that denotes the last breakpoint. | |
5c44784c JM |
408 | |
409 | TRAILER is a character which can be found after the number; most | |
410 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 411 | static int |
fba45db2 | 412 | get_number_trailer (char **pp, int trailer) |
c906108c | 413 | { |
5c44784c | 414 | int retval = 0; /* default */ |
c906108c SS |
415 | char *p = *pp; |
416 | ||
417 | if (p == NULL) | |
418 | /* Empty line means refer to the last breakpoint. */ | |
419 | return breakpoint_count; | |
420 | else if (*p == '$') | |
421 | { | |
422 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 423 | to pass to lookup_internalvar(). */ |
c906108c SS |
424 | char *varname; |
425 | char *start = ++p; | |
4fa62494 | 426 | LONGEST val; |
c906108c SS |
427 | |
428 | while (isalnum (*p) || *p == '_') | |
429 | p++; | |
430 | varname = (char *) alloca (p - start + 1); | |
431 | strncpy (varname, start, p - start); | |
432 | varname[p - start] = '\0'; | |
4fa62494 UW |
433 | if (get_internalvar_integer (lookup_internalvar (varname), &val)) |
434 | retval = (int) val; | |
5c44784c JM |
435 | else |
436 | { | |
a3f17187 | 437 | printf_filtered (_("Convenience variable must have integer value.\n")); |
5c44784c JM |
438 | retval = 0; |
439 | } | |
c906108c SS |
440 | } |
441 | else | |
442 | { | |
443 | if (*p == '-') | |
444 | ++p; | |
445 | while (*p >= '0' && *p <= '9') | |
446 | ++p; | |
447 | if (p == *pp) | |
448 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
449 | { |
450 | /* Skip non-numeric token */ | |
451 | while (*p && !isspace((int) *p)) | |
452 | ++p; | |
453 | /* Return zero, which caller must interpret as error. */ | |
454 | retval = 0; | |
455 | } | |
456 | else | |
457 | retval = atoi (*pp); | |
458 | } | |
459 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
460 | { | |
461 | /* Trailing junk: return 0 and let caller print error msg. */ | |
462 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
463 | ++p; | |
464 | retval = 0; | |
c906108c | 465 | } |
c906108c SS |
466 | while (isspace (*p)) |
467 | p++; | |
468 | *pp = p; | |
469 | return retval; | |
470 | } | |
5c44784c | 471 | |
11cf8741 | 472 | |
5c44784c JM |
473 | /* Like get_number_trailer, but don't allow a trailer. */ |
474 | int | |
fba45db2 | 475 | get_number (char **pp) |
5c44784c JM |
476 | { |
477 | return get_number_trailer (pp, '\0'); | |
478 | } | |
479 | ||
480 | /* Parse a number or a range. | |
481 | * A number will be of the form handled by get_number. | |
482 | * A range will be of the form <number1> - <number2>, and | |
483 | * will represent all the integers between number1 and number2, | |
484 | * inclusive. | |
485 | * | |
486 | * While processing a range, this fuction is called iteratively; | |
487 | * At each call it will return the next value in the range. | |
488 | * | |
489 | * At the beginning of parsing a range, the char pointer PP will | |
490 | * be advanced past <number1> and left pointing at the '-' token. | |
491 | * Subsequent calls will not advance the pointer until the range | |
492 | * is completed. The call that completes the range will advance | |
493 | * pointer PP past <number2>. | |
494 | */ | |
495 | ||
496 | int | |
fba45db2 | 497 | get_number_or_range (char **pp) |
5c44784c JM |
498 | { |
499 | static int last_retval, end_value; | |
500 | static char *end_ptr; | |
501 | static int in_range = 0; | |
502 | ||
503 | if (**pp != '-') | |
504 | { | |
505 | /* Default case: pp is pointing either to a solo number, | |
506 | or to the first number of a range. */ | |
507 | last_retval = get_number_trailer (pp, '-'); | |
508 | if (**pp == '-') | |
509 | { | |
510 | char **temp; | |
511 | ||
512 | /* This is the start of a range (<number1> - <number2>). | |
513 | Skip the '-', parse and remember the second number, | |
514 | and also remember the end of the final token. */ | |
515 | ||
516 | temp = &end_ptr; | |
517 | end_ptr = *pp + 1; | |
518 | while (isspace ((int) *end_ptr)) | |
519 | end_ptr++; /* skip white space */ | |
520 | end_value = get_number (temp); | |
521 | if (end_value < last_retval) | |
522 | { | |
8a3fe4f8 | 523 | error (_("inverted range")); |
5c44784c JM |
524 | } |
525 | else if (end_value == last_retval) | |
526 | { | |
527 | /* degenerate range (number1 == number2). Advance the | |
528 | token pointer so that the range will be treated as a | |
529 | single number. */ | |
530 | *pp = end_ptr; | |
531 | } | |
532 | else | |
533 | in_range = 1; | |
534 | } | |
535 | } | |
536 | else if (! in_range) | |
8a3fe4f8 | 537 | error (_("negative value")); |
5c44784c JM |
538 | else |
539 | { | |
540 | /* pp points to the '-' that betokens a range. All | |
541 | number-parsing has already been done. Return the next | |
542 | integer value (one greater than the saved previous value). | |
543 | Do not advance the token pointer 'pp' until the end of range | |
544 | is reached. */ | |
545 | ||
546 | if (++last_retval == end_value) | |
547 | { | |
548 | /* End of range reached; advance token pointer. */ | |
549 | *pp = end_ptr; | |
550 | in_range = 0; | |
551 | } | |
552 | } | |
553 | return last_retval; | |
554 | } | |
555 | ||
556 | ||
c906108c SS |
557 | \f |
558 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
559 | ||
560 | static void | |
fba45db2 | 561 | condition_command (char *arg, int from_tty) |
c906108c | 562 | { |
52f0bd74 | 563 | struct breakpoint *b; |
c906108c | 564 | char *p; |
52f0bd74 | 565 | int bnum; |
c906108c SS |
566 | |
567 | if (arg == 0) | |
e2e0b3e5 | 568 | error_no_arg (_("breakpoint number")); |
c906108c SS |
569 | |
570 | p = arg; | |
571 | bnum = get_number (&p); | |
5c44784c | 572 | if (bnum == 0) |
8a3fe4f8 | 573 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
574 | |
575 | ALL_BREAKPOINTS (b) | |
576 | if (b->number == bnum) | |
2f069f6f JB |
577 | { |
578 | struct bp_location *loc = b->loc; | |
579 | for (; loc; loc = loc->next) | |
580 | { | |
581 | if (loc->cond) | |
582 | { | |
583 | xfree (loc->cond); | |
584 | loc->cond = 0; | |
585 | } | |
586 | } | |
587 | if (b->cond_string != NULL) | |
588 | xfree (b->cond_string); | |
c906108c | 589 | |
2f069f6f JB |
590 | if (*p == 0) |
591 | { | |
592 | b->cond_string = NULL; | |
593 | if (from_tty) | |
594 | printf_filtered (_("Breakpoint %d now unconditional.\n"), bnum); | |
595 | } | |
596 | else | |
597 | { | |
598 | arg = p; | |
599 | /* I don't know if it matters whether this is the string the user | |
600 | typed in or the decompiled expression. */ | |
1b36a34b | 601 | b->cond_string = xstrdup (arg); |
2f069f6f JB |
602 | b->condition_not_parsed = 0; |
603 | for (loc = b->loc; loc; loc = loc->next) | |
604 | { | |
605 | arg = p; | |
606 | loc->cond = | |
607 | parse_exp_1 (&arg, block_for_pc (loc->address), 0); | |
608 | if (*arg) | |
609 | error (_("Junk at end of expression")); | |
610 | } | |
611 | } | |
612 | breakpoints_changed (); | |
383f836e | 613 | observer_notify_breakpoint_modified (b->number); |
2f069f6f JB |
614 | return; |
615 | } | |
c906108c | 616 | |
8a3fe4f8 | 617 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
618 | } |
619 | ||
c906108c | 620 | static void |
fba45db2 | 621 | commands_command (char *arg, int from_tty) |
c906108c | 622 | { |
52f0bd74 | 623 | struct breakpoint *b; |
c906108c | 624 | char *p; |
52f0bd74 | 625 | int bnum; |
c906108c SS |
626 | struct command_line *l; |
627 | ||
628 | /* If we allowed this, we would have problems with when to | |
629 | free the storage, if we change the commands currently | |
630 | being read from. */ | |
631 | ||
632 | if (executing_breakpoint_commands) | |
8a3fe4f8 | 633 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); |
c906108c SS |
634 | |
635 | p = arg; | |
636 | bnum = get_number (&p); | |
5c44784c | 637 | |
c906108c | 638 | if (p && *p) |
8a3fe4f8 | 639 | error (_("Unexpected extra arguments following breakpoint number.")); |
c5aa993b | 640 | |
c906108c SS |
641 | ALL_BREAKPOINTS (b) |
642 | if (b->number == bnum) | |
9ebf4acf AC |
643 | { |
644 | char *tmpbuf = xstrprintf ("Type commands for when breakpoint %d is hit, one per line.", | |
645 | bnum); | |
646 | struct cleanup *cleanups = make_cleanup (xfree, tmpbuf); | |
311a4e6b | 647 | l = read_command_lines (tmpbuf, from_tty, 1); |
9ebf4acf AC |
648 | do_cleanups (cleanups); |
649 | free_command_lines (&b->commands); | |
650 | b->commands = l; | |
651 | breakpoints_changed (); | |
383f836e | 652 | observer_notify_breakpoint_modified (b->number); |
9ebf4acf | 653 | return; |
c5aa993b | 654 | } |
8a3fe4f8 | 655 | error (_("No breakpoint number %d."), bnum); |
c906108c | 656 | } |
40c03ae8 EZ |
657 | |
658 | /* Like commands_command, but instead of reading the commands from | |
659 | input stream, takes them from an already parsed command structure. | |
660 | ||
661 | This is used by cli-script.c to DTRT with breakpoint commands | |
662 | that are part of if and while bodies. */ | |
663 | enum command_control_type | |
664 | commands_from_control_command (char *arg, struct command_line *cmd) | |
665 | { | |
666 | struct breakpoint *b; | |
667 | char *p; | |
668 | int bnum; | |
669 | ||
670 | /* If we allowed this, we would have problems with when to | |
671 | free the storage, if we change the commands currently | |
672 | being read from. */ | |
673 | ||
674 | if (executing_breakpoint_commands) | |
675 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); | |
676 | ||
677 | /* An empty string for the breakpoint number means the last | |
678 | breakpoint, but get_number expects a NULL pointer. */ | |
679 | if (arg && !*arg) | |
680 | p = NULL; | |
681 | else | |
682 | p = arg; | |
683 | bnum = get_number (&p); | |
684 | ||
685 | if (p && *p) | |
686 | error (_("Unexpected extra arguments following breakpoint number.")); | |
687 | ||
688 | ALL_BREAKPOINTS (b) | |
689 | if (b->number == bnum) | |
690 | { | |
691 | free_command_lines (&b->commands); | |
692 | if (cmd->body_count != 1) | |
693 | error (_("Invalid \"commands\" block structure.")); | |
694 | /* We need to copy the commands because if/while will free the | |
695 | list after it finishes execution. */ | |
696 | b->commands = copy_command_lines (cmd->body_list[0]); | |
697 | breakpoints_changed (); | |
383f836e | 698 | observer_notify_breakpoint_modified (b->number); |
40c03ae8 | 699 | return simple_control; |
2f069f6f | 700 | } |
40c03ae8 EZ |
701 | error (_("No breakpoint number %d."), bnum); |
702 | } | |
c906108c | 703 | \f |
8defab1a DJ |
704 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
705 | by replacing any memory breakpoints with their shadowed contents. */ | |
c906108c | 706 | |
8defab1a DJ |
707 | void |
708 | breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr, LONGEST len) | |
c906108c | 709 | { |
8defab1a | 710 | struct bp_location *b; |
c906108c SS |
711 | CORE_ADDR bp_addr = 0; |
712 | int bp_size = 0; | |
8defab1a | 713 | int bptoffset = 0; |
c5aa993b | 714 | |
ffce0d52 | 715 | ALL_BP_LOCATIONS (b) |
c5aa993b | 716 | { |
ffce0d52 | 717 | if (b->owner->type == bp_none) |
8a3fe4f8 | 718 | warning (_("reading through apparently deleted breakpoint #%d?"), |
ffce0d52 DJ |
719 | b->owner->number); |
720 | ||
721 | if (b->loc_type != bp_loc_software_breakpoint) | |
c5aa993b | 722 | continue; |
ffce0d52 | 723 | if (!b->inserted) |
c5aa993b JM |
724 | continue; |
725 | /* Addresses and length of the part of the breakpoint that | |
726 | we need to copy. */ | |
8181d85f DJ |
727 | bp_addr = b->target_info.placed_address; |
728 | bp_size = b->target_info.shadow_len; | |
c5aa993b | 729 | if (bp_size == 0) |
8181d85f | 730 | /* bp isn't valid, or doesn't shadow memory. */ |
c5aa993b | 731 | continue; |
8defab1a | 732 | |
c5aa993b JM |
733 | if (bp_addr + bp_size <= memaddr) |
734 | /* The breakpoint is entirely before the chunk of memory we | |
735 | are reading. */ | |
736 | continue; | |
8defab1a | 737 | |
c5aa993b JM |
738 | if (bp_addr >= memaddr + len) |
739 | /* The breakpoint is entirely after the chunk of memory we are | |
740 | reading. */ | |
741 | continue; | |
c5aa993b | 742 | |
8defab1a DJ |
743 | /* Offset within shadow_contents. */ |
744 | if (bp_addr < memaddr) | |
745 | { | |
746 | /* Only copy the second part of the breakpoint. */ | |
747 | bp_size -= memaddr - bp_addr; | |
748 | bptoffset = memaddr - bp_addr; | |
749 | bp_addr = memaddr; | |
750 | } | |
c5aa993b | 751 | |
8defab1a DJ |
752 | if (bp_addr + bp_size > memaddr + len) |
753 | { | |
754 | /* Only copy the first part of the breakpoint. */ | |
755 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
756 | } | |
c5aa993b | 757 | |
8defab1a DJ |
758 | memcpy (buf + bp_addr - memaddr, |
759 | b->target_info.shadow_contents + bptoffset, bp_size); | |
c5aa993b | 760 | } |
c906108c | 761 | } |
c906108c | 762 | \f |
c5aa993b | 763 | |
687595f9 | 764 | /* A wrapper function for inserting catchpoints. */ |
9cbc821d | 765 | static void |
687595f9 DJ |
766 | insert_catchpoint (struct ui_out *uo, void *args) |
767 | { | |
768 | struct breakpoint *b = (struct breakpoint *) args; | |
769 | int val = -1; | |
770 | ||
fe798b75 JB |
771 | gdb_assert (b->type == bp_catchpoint); |
772 | gdb_assert (b->ops != NULL && b->ops->insert != NULL); | |
773 | ||
774 | b->ops->insert (b); | |
687595f9 DJ |
775 | } |
776 | ||
a5606eee VP |
777 | static int |
778 | is_hardware_watchpoint (struct breakpoint *bpt) | |
779 | { | |
780 | return (bpt->type == bp_hardware_watchpoint | |
781 | || bpt->type == bp_read_watchpoint | |
782 | || bpt->type == bp_access_watchpoint); | |
783 | } | |
7270d8f2 | 784 | |
fa4727a6 DJ |
785 | /* Find the current value of a watchpoint on EXP. Return the value in |
786 | *VALP and *RESULTP and the chain of intermediate and final values | |
787 | in *VAL_CHAIN. RESULTP and VAL_CHAIN may be NULL if the caller does | |
788 | not need them. | |
789 | ||
ccc57cf9 | 790 | If a memory error occurs while evaluating the expression, *RESULTP will |
fa4727a6 DJ |
791 | be set to NULL. *RESULTP may be a lazy value, if the result could |
792 | not be read from memory. It is used to determine whether a value | |
793 | is user-specified (we should watch the whole value) or intermediate | |
794 | (we should watch only the bit used to locate the final value). | |
795 | ||
796 | If the final value, or any intermediate value, could not be read | |
797 | from memory, *VALP will be set to NULL. *VAL_CHAIN will still be | |
798 | set to any referenced values. *VALP will never be a lazy value. | |
799 | This is the value which we store in struct breakpoint. | |
800 | ||
801 | If VAL_CHAIN is non-NULL, *VAL_CHAIN will be released from the | |
802 | value chain. The caller must free the values individually. If | |
803 | VAL_CHAIN is NULL, all generated values will be left on the value | |
804 | chain. */ | |
805 | ||
806 | static void | |
807 | fetch_watchpoint_value (struct expression *exp, struct value **valp, | |
808 | struct value **resultp, struct value **val_chain) | |
809 | { | |
810 | struct value *mark, *new_mark, *result; | |
ccc57cf9 | 811 | volatile struct gdb_exception ex; |
fa4727a6 DJ |
812 | |
813 | *valp = NULL; | |
814 | if (resultp) | |
815 | *resultp = NULL; | |
816 | if (val_chain) | |
817 | *val_chain = NULL; | |
818 | ||
819 | /* Evaluate the expression. */ | |
820 | mark = value_mark (); | |
821 | result = NULL; | |
ccc57cf9 PA |
822 | |
823 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
824 | { | |
825 | result = evaluate_expression (exp); | |
826 | } | |
827 | if (ex.reason < 0) | |
828 | { | |
829 | /* Ignore memory errors, we want watchpoints pointing at | |
830 | inaccessible memory to still be created; otherwise, throw the | |
831 | error to some higher catcher. */ | |
832 | switch (ex.error) | |
833 | { | |
834 | case MEMORY_ERROR: | |
835 | break; | |
836 | default: | |
837 | throw_exception (ex); | |
838 | break; | |
839 | } | |
840 | } | |
841 | ||
fa4727a6 DJ |
842 | new_mark = value_mark (); |
843 | if (mark == new_mark) | |
844 | return; | |
845 | if (resultp) | |
846 | *resultp = result; | |
847 | ||
848 | /* Make sure it's not lazy, so that after the target stops again we | |
849 | have a non-lazy previous value to compare with. */ | |
850 | if (result != NULL | |
851 | && (!value_lazy (result) || gdb_value_fetch_lazy (result))) | |
852 | *valp = result; | |
853 | ||
854 | if (val_chain) | |
855 | { | |
856 | /* Return the chain of intermediate values. We use this to | |
857 | decide which addresses to watch. */ | |
858 | *val_chain = new_mark; | |
859 | value_release_to_mark (mark); | |
860 | } | |
861 | } | |
862 | ||
567e1b4e JB |
863 | /* Assuming that B is a watchpoint: |
864 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 865 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
866 | - Evaluate the condition if there is one, and store the result |
867 | in b->loc->cond. | |
a5606eee VP |
868 | - Update the list of values that must be watched in B->loc. |
869 | ||
bfa149ac JB |
870 | If the watchpoint disposition is disp_del_at_next_stop, then do nothing. |
871 | If this is local watchpoint that is out of scope, delete it. */ | |
b40ce68a | 872 | static void |
a5606eee | 873 | update_watchpoint (struct breakpoint *b, int reparse) |
7270d8f2 | 874 | { |
a5606eee | 875 | int within_current_scope; |
a5606eee VP |
876 | struct frame_id saved_frame_id; |
877 | struct bp_location *loc; | |
878 | bpstat bs; | |
879 | ||
567e1b4e JB |
880 | /* We don't free locations. They are stored in bp_location_chain and |
881 | update_global_locations will eventually delete them and remove | |
882 | breakpoints if needed. */ | |
a5606eee VP |
883 | b->loc = NULL; |
884 | ||
885 | if (b->disposition == disp_del_at_next_stop) | |
886 | return; | |
887 | ||
888 | /* Save the current frame's ID so we can restore it after | |
889 | evaluating the watchpoint expression on its own frame. */ | |
890 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
891 | took a frame parameter, so that we didn't have to change the | |
892 | selected frame. */ | |
893 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
894 | ||
895 | /* Determine if the watchpoint is within scope. */ | |
896 | if (b->exp_valid_block == NULL) | |
897 | within_current_scope = 1; | |
898 | else | |
899 | { | |
900 | struct frame_info *fi; | |
901 | fi = frame_find_by_id (b->watchpoint_frame); | |
902 | within_current_scope = (fi != NULL); | |
903 | if (within_current_scope) | |
904 | select_frame (fi); | |
905 | } | |
906 | ||
907 | if (within_current_scope && reparse) | |
908 | { | |
909 | char *s; | |
910 | if (b->exp) | |
911 | { | |
912 | xfree (b->exp); | |
913 | b->exp = NULL; | |
914 | } | |
915 | s = b->exp_string; | |
916 | b->exp = parse_exp_1 (&s, b->exp_valid_block, 0); | |
917 | /* If the meaning of expression itself changed, the old value is | |
918 | no longer relevant. We don't want to report a watchpoint hit | |
919 | to the user when the old value and the new value may actually | |
920 | be completely different objects. */ | |
921 | value_free (b->val); | |
fa4727a6 DJ |
922 | b->val = NULL; |
923 | b->val_valid = 0; | |
a5606eee | 924 | } |
a5606eee VP |
925 | |
926 | /* If we failed to parse the expression, for example because | |
927 | it refers to a global variable in a not-yet-loaded shared library, | |
928 | don't try to insert watchpoint. We don't automatically delete | |
929 | such watchpoint, though, since failure to parse expression | |
930 | is different from out-of-scope watchpoint. */ | |
931 | if (within_current_scope && b->exp) | |
932 | { | |
fa4727a6 | 933 | struct value *val_chain, *v, *result, *next; |
a5606eee | 934 | |
fa4727a6 | 935 | fetch_watchpoint_value (b->exp, &v, &result, &val_chain); |
a5606eee | 936 | |
a5606eee VP |
937 | /* Avoid setting b->val if it's already set. The meaning of |
938 | b->val is 'the last value' user saw, and we should update | |
939 | it only if we reported that last value to user. As it | |
940 | happens, the code that reports it updates b->val directly. */ | |
fa4727a6 DJ |
941 | if (!b->val_valid) |
942 | { | |
943 | b->val = v; | |
944 | b->val_valid = 1; | |
945 | } | |
a5606eee | 946 | |
db2ad4c3 JK |
947 | /* Change the type of breakpoint between hardware assisted or an |
948 | ordinary watchpoint depending on the hardware support and free | |
949 | hardware slots. REPARSE is set when the inferior is started. */ | |
950 | if ((b->type == bp_watchpoint || b->type == bp_hardware_watchpoint) | |
951 | && reparse) | |
952 | { | |
ca2d49e8 | 953 | int i, mem_cnt, other_type_used; |
db2ad4c3 JK |
954 | |
955 | i = hw_watchpoint_used_count (bp_hardware_watchpoint, | |
956 | &other_type_used); | |
957 | mem_cnt = can_use_hardware_watchpoint (val_chain); | |
958 | ||
ca2d49e8 | 959 | if (!mem_cnt) |
db2ad4c3 JK |
960 | b->type = bp_watchpoint; |
961 | else | |
ca2d49e8 | 962 | { |
d92524f1 | 963 | int target_resources_ok = target_can_use_hardware_watchpoint |
ca2d49e8 SL |
964 | (bp_hardware_watchpoint, i + mem_cnt, other_type_used); |
965 | if (target_resources_ok <= 0) | |
966 | b->type = bp_watchpoint; | |
967 | else | |
968 | b->type = bp_hardware_watchpoint; | |
969 | } | |
db2ad4c3 JK |
970 | } |
971 | ||
a5606eee | 972 | /* Look at each value on the value chain. */ |
fa4727a6 | 973 | for (v = val_chain; v; v = next) |
a5606eee VP |
974 | { |
975 | /* If it's a memory location, and GDB actually needed | |
976 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
977 | must watch it. If the first value returned is |
978 | still lazy, that means an error occurred reading it; | |
979 | watch it anyway in case it becomes readable. */ | |
a5606eee | 980 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 981 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
982 | { |
983 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 984 | |
a5606eee VP |
985 | /* We only watch structs and arrays if user asked |
986 | for it explicitly, never if they just happen to | |
987 | appear in the middle of some value chain. */ | |
fa4727a6 | 988 | if (v == result |
a5606eee VP |
989 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
990 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
991 | { | |
992 | CORE_ADDR addr; | |
993 | int len, type; | |
994 | struct bp_location *loc, **tmp; | |
995 | ||
42ae5230 | 996 | addr = value_address (v); |
a5606eee VP |
997 | len = TYPE_LENGTH (value_type (v)); |
998 | type = hw_write; | |
999 | if (b->type == bp_read_watchpoint) | |
1000 | type = hw_read; | |
1001 | else if (b->type == bp_access_watchpoint) | |
1002 | type = hw_access; | |
1003 | ||
39d61571 | 1004 | loc = allocate_bp_location (b); |
a5606eee VP |
1005 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
1006 | ; | |
1007 | *tmp = loc; | |
1008 | loc->address = addr; | |
1009 | loc->length = len; | |
1010 | loc->watchpoint_type = type; | |
1011 | } | |
1012 | } | |
1013 | ||
1014 | next = value_next (v); | |
1015 | if (v != b->val) | |
1016 | value_free (v); | |
1017 | } | |
1018 | ||
2ec93238 MK |
1019 | /* We just regenerated the list of breakpoint locations. |
1020 | The new location does not have its condition field set to anything | |
1021 | and therefore, we must always reparse the cond_string, independently | |
1022 | of the value of the reparse flag. */ | |
1023 | if (b->cond_string != NULL) | |
a5606eee VP |
1024 | { |
1025 | char *s = b->cond_string; | |
a5606eee VP |
1026 | b->loc->cond = parse_exp_1 (&s, b->exp_valid_block, 0); |
1027 | } | |
1028 | } | |
1029 | else if (!within_current_scope) | |
7270d8f2 | 1030 | { |
a5606eee | 1031 | printf_filtered (_("\ |
567e1b4e | 1032 | Watchpoint %d deleted because the program has left the block \n\ |
a5606eee VP |
1033 | in which its expression is valid.\n"), |
1034 | b->number); | |
1035 | if (b->related_breakpoint) | |
1036 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1037 | b->disposition = disp_del_at_next_stop; | |
7270d8f2 | 1038 | } |
a5606eee VP |
1039 | |
1040 | /* Restore the selected frame. */ | |
1041 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1042 | } |
1043 | ||
a5606eee | 1044 | |
74960c60 VP |
1045 | /* Returns 1 iff breakpoint location should be |
1046 | inserted in the inferior. */ | |
1047 | static int | |
1048 | should_be_inserted (struct bp_location *bpt) | |
1049 | { | |
1050 | if (!breakpoint_enabled (bpt->owner)) | |
1051 | return 0; | |
1052 | ||
1053 | if (bpt->owner->disposition == disp_del_at_next_stop) | |
1054 | return 0; | |
1055 | ||
1056 | if (!bpt->enabled || bpt->shlib_disabled || bpt->duplicate) | |
1057 | return 0; | |
1058 | ||
1042e4c0 SS |
1059 | /* Tracepoints are inserted by the target at a time of its choosing, |
1060 | not by us. */ | |
1061 | if (bpt->owner->type == bp_tracepoint) | |
1062 | return 0; | |
1063 | ||
74960c60 VP |
1064 | return 1; |
1065 | } | |
1066 | ||
879bfdc2 DJ |
1067 | /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint. |
1068 | Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS, | |
fa3a767f | 1069 | and HW_BREAKPOINT_ERROR are used to report problems. |
879bfdc2 DJ |
1070 | |
1071 | NOTE drow/2003-09-09: This routine could be broken down to an object-style | |
1072 | method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 1073 | static int |
879bfdc2 | 1074 | insert_bp_location (struct bp_location *bpt, |
26bb91f3 | 1075 | struct ui_file *tmp_error_stream, |
fa3a767f | 1076 | int *disabled_breaks, |
26bb91f3 | 1077 | int *hw_breakpoint_error) |
879bfdc2 DJ |
1078 | { |
1079 | int val = 0; | |
1080 | ||
74960c60 | 1081 | if (!should_be_inserted (bpt) || bpt->inserted) |
879bfdc2 DJ |
1082 | return 0; |
1083 | ||
8181d85f DJ |
1084 | /* Initialize the target-specific information. */ |
1085 | memset (&bpt->target_info, 0, sizeof (bpt->target_info)); | |
1086 | bpt->target_info.placed_address = bpt->address; | |
1087 | ||
879bfdc2 DJ |
1088 | if (bpt->loc_type == bp_loc_software_breakpoint |
1089 | || bpt->loc_type == bp_loc_hardware_breakpoint) | |
1090 | { | |
765dc015 VP |
1091 | if (bpt->owner->type != bp_hardware_breakpoint) |
1092 | { | |
1093 | /* If the explicitly specified breakpoint type | |
1094 | is not hardware breakpoint, check the memory map to see | |
1095 | if the breakpoint address is in read only memory or not. | |
1096 | Two important cases are: | |
1097 | - location type is not hardware breakpoint, memory | |
1098 | is readonly. We change the type of the location to | |
1099 | hardware breakpoint. | |
1100 | - location type is hardware breakpoint, memory is read-write. | |
1101 | This means we've previously made the location hardware one, but | |
1102 | then the memory map changed, so we undo. | |
1103 | ||
1104 | When breakpoints are removed, remove_breakpoints will | |
1105 | use location types we've just set here, the only possible | |
1106 | problem is that memory map has changed during running program, | |
1107 | but it's not going to work anyway with current gdb. */ | |
1108 | struct mem_region *mr | |
1109 | = lookup_mem_region (bpt->target_info.placed_address); | |
1110 | ||
1111 | if (mr) | |
1112 | { | |
1113 | if (automatic_hardware_breakpoints) | |
1114 | { | |
1115 | int changed = 0; | |
1116 | enum bp_loc_type new_type; | |
1117 | ||
1118 | if (mr->attrib.mode != MEM_RW) | |
1119 | new_type = bp_loc_hardware_breakpoint; | |
1120 | else | |
1121 | new_type = bp_loc_software_breakpoint; | |
1122 | ||
1123 | if (new_type != bpt->loc_type) | |
1124 | { | |
1125 | static int said = 0; | |
1126 | bpt->loc_type = new_type; | |
1127 | if (!said) | |
1128 | { | |
1129 | fprintf_filtered (gdb_stdout, _("\ | |
0767c96d | 1130 | Note: automatically using hardware breakpoints for read-only addresses.\n")); |
765dc015 VP |
1131 | said = 1; |
1132 | } | |
1133 | } | |
1134 | } | |
1135 | else if (bpt->loc_type == bp_loc_software_breakpoint | |
1136 | && mr->attrib.mode != MEM_RW) | |
1137 | warning (_("cannot set software breakpoint at readonly address %s"), | |
1138 | paddr (bpt->address)); | |
1139 | } | |
1140 | } | |
1141 | ||
879bfdc2 DJ |
1142 | /* First check to see if we have to handle an overlay. */ |
1143 | if (overlay_debugging == ovly_off | |
1144 | || bpt->section == NULL | |
1145 | || !(section_is_overlay (bpt->section))) | |
1146 | { | |
1147 | /* No overlay handling: just set the breakpoint. */ | |
1148 | ||
1149 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8181d85f | 1150 | val = target_insert_hw_breakpoint (&bpt->target_info); |
879bfdc2 | 1151 | else |
8181d85f | 1152 | val = target_insert_breakpoint (&bpt->target_info); |
879bfdc2 DJ |
1153 | } |
1154 | else | |
1155 | { | |
1156 | /* This breakpoint is in an overlay section. | |
1157 | Shall we set a breakpoint at the LMA? */ | |
1158 | if (!overlay_events_enabled) | |
1159 | { | |
1160 | /* Yes -- overlay event support is not active, | |
1161 | so we must try to set a breakpoint at the LMA. | |
1162 | This will not work for a hardware breakpoint. */ | |
1163 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8a3fe4f8 | 1164 | warning (_("hardware breakpoint %d not supported in overlay!"), |
879bfdc2 DJ |
1165 | bpt->owner->number); |
1166 | else | |
1167 | { | |
1168 | CORE_ADDR addr = overlay_unmapped_address (bpt->address, | |
1169 | bpt->section); | |
1170 | /* Set a software (trap) breakpoint at the LMA. */ | |
8181d85f DJ |
1171 | bpt->overlay_target_info = bpt->target_info; |
1172 | bpt->overlay_target_info.placed_address = addr; | |
1173 | val = target_insert_breakpoint (&bpt->overlay_target_info); | |
879bfdc2 | 1174 | if (val != 0) |
99361f52 DE |
1175 | fprintf_unfiltered (tmp_error_stream, |
1176 | "Overlay breakpoint %d failed: in ROM?\n", | |
879bfdc2 DJ |
1177 | bpt->owner->number); |
1178 | } | |
1179 | } | |
1180 | /* Shall we set a breakpoint at the VMA? */ | |
1181 | if (section_is_mapped (bpt->section)) | |
1182 | { | |
1183 | /* Yes. This overlay section is mapped into memory. */ | |
1184 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8181d85f | 1185 | val = target_insert_hw_breakpoint (&bpt->target_info); |
879bfdc2 | 1186 | else |
8181d85f | 1187 | val = target_insert_breakpoint (&bpt->target_info); |
879bfdc2 DJ |
1188 | } |
1189 | else | |
1190 | { | |
1191 | /* No. This breakpoint will not be inserted. | |
1192 | No error, but do not mark the bp as 'inserted'. */ | |
1193 | return 0; | |
1194 | } | |
1195 | } | |
1196 | ||
1197 | if (val) | |
1198 | { | |
1199 | /* Can't set the breakpoint. */ | |
f5c9a895 | 1200 | if (solib_name_from_address (bpt->address)) |
879bfdc2 DJ |
1201 | { |
1202 | /* See also: disable_breakpoints_in_shlibs. */ | |
1203 | val = 0; | |
0d381245 | 1204 | bpt->shlib_disabled = 1; |
879bfdc2 DJ |
1205 | if (!*disabled_breaks) |
1206 | { | |
1207 | fprintf_unfiltered (tmp_error_stream, | |
1208 | "Cannot insert breakpoint %d.\n", | |
1209 | bpt->owner->number); | |
1210 | fprintf_unfiltered (tmp_error_stream, | |
1211 | "Temporarily disabling shared library breakpoints:\n"); | |
1212 | } | |
1213 | *disabled_breaks = 1; | |
1214 | fprintf_unfiltered (tmp_error_stream, | |
1215 | "breakpoint #%d\n", bpt->owner->number); | |
1216 | } | |
1217 | else | |
879bfdc2 | 1218 | { |
879bfdc2 DJ |
1219 | if (bpt->loc_type == bp_loc_hardware_breakpoint) |
1220 | { | |
1221 | *hw_breakpoint_error = 1; | |
1222 | fprintf_unfiltered (tmp_error_stream, | |
1223 | "Cannot insert hardware breakpoint %d.\n", | |
1224 | bpt->owner->number); | |
1225 | } | |
1226 | else | |
1227 | { | |
1228 | fprintf_unfiltered (tmp_error_stream, | |
1229 | "Cannot insert breakpoint %d.\n", | |
1230 | bpt->owner->number); | |
1231 | fprintf_filtered (tmp_error_stream, | |
1232 | "Error accessing memory address "); | |
ed49a04f | 1233 | fputs_filtered (paddress (bpt->address), tmp_error_stream); |
879bfdc2 DJ |
1234 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1235 | safe_strerror (val)); | |
1236 | } | |
1237 | ||
1238 | } | |
1239 | } | |
1240 | else | |
1241 | bpt->inserted = 1; | |
1242 | ||
1243 | return val; | |
1244 | } | |
1245 | ||
1246 | else if (bpt->loc_type == bp_loc_hardware_watchpoint | |
1247 | /* NOTE drow/2003-09-08: This state only exists for removing | |
1248 | watchpoints. It's not clear that it's necessary... */ | |
1249 | && bpt->owner->disposition != disp_del_at_next_stop) | |
1250 | { | |
a5606eee VP |
1251 | val = target_insert_watchpoint (bpt->address, |
1252 | bpt->length, | |
1253 | bpt->watchpoint_type); | |
1254 | bpt->inserted = (val != -1); | |
879bfdc2 DJ |
1255 | } |
1256 | ||
fe798b75 | 1257 | else if (bpt->owner->type == bp_catchpoint) |
879bfdc2 | 1258 | { |
71fff37b AC |
1259 | struct gdb_exception e = catch_exception (uiout, insert_catchpoint, |
1260 | bpt->owner, RETURN_MASK_ERROR); | |
9cbc821d AC |
1261 | exception_fprintf (gdb_stderr, e, "warning: inserting catchpoint %d: ", |
1262 | bpt->owner->number); | |
1263 | if (e.reason < 0) | |
879bfdc2 DJ |
1264 | bpt->owner->enable_state = bp_disabled; |
1265 | else | |
1266 | bpt->inserted = 1; | |
1640b821 DJ |
1267 | |
1268 | /* We've already printed an error message if there was a problem | |
1269 | inserting this catchpoint, and we've disabled the catchpoint, | |
1270 | so just return success. */ | |
1271 | return 0; | |
879bfdc2 DJ |
1272 | } |
1273 | ||
1274 | return 0; | |
1275 | } | |
1276 | ||
74960c60 VP |
1277 | /* Make sure all breakpoints are inserted in inferior. |
1278 | Throws exception on any error. | |
1279 | A breakpoint that is already inserted won't be inserted | |
1280 | again, so calling this function twice is safe. */ | |
1281 | void | |
1282 | insert_breakpoints (void) | |
1283 | { | |
1284 | struct breakpoint *bpt; | |
1285 | ||
1286 | ALL_BREAKPOINTS (bpt) | |
1287 | if (is_hardware_watchpoint (bpt)) | |
1288 | update_watchpoint (bpt, 0 /* don't reparse. */); | |
1289 | ||
b60e7edf | 1290 | update_global_location_list (1); |
74960c60 | 1291 | |
c35b1492 PA |
1292 | /* update_global_location_list does not insert breakpoints when |
1293 | always_inserted_mode is not enabled. Explicitly insert them | |
1294 | now. */ | |
1295 | if (!breakpoints_always_inserted_mode ()) | |
74960c60 VP |
1296 | insert_breakpoint_locations (); |
1297 | } | |
1298 | ||
c906108c SS |
1299 | /* insert_breakpoints is used when starting or continuing the program. |
1300 | remove_breakpoints is used when the program stops. | |
1301 | Both return zero if successful, | |
1302 | or an `errno' value if could not write the inferior. */ | |
1303 | ||
74960c60 VP |
1304 | static void |
1305 | insert_breakpoint_locations (void) | |
c906108c | 1306 | { |
a5606eee | 1307 | struct breakpoint *bpt; |
879bfdc2 | 1308 | struct bp_location *b, *temp; |
e236ba44 | 1309 | int error = 0; |
c906108c SS |
1310 | int val = 0; |
1311 | int disabled_breaks = 0; | |
81d0cc19 | 1312 | int hw_breakpoint_error = 0; |
c906108c | 1313 | |
81d0cc19 | 1314 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 1315 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 1316 | |
81d0cc19 GS |
1317 | /* Explicitly mark the warning -- this will only be printed if |
1318 | there was an error. */ | |
1319 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
a5606eee | 1320 | |
879bfdc2 DJ |
1321 | ALL_BP_LOCATIONS_SAFE (b, temp) |
1322 | { | |
74960c60 | 1323 | if (!should_be_inserted (b) || b->inserted) |
879bfdc2 DJ |
1324 | continue; |
1325 | ||
f365de73 AS |
1326 | /* There is no point inserting thread-specific breakpoints if the |
1327 | thread no longer exists. */ | |
1328 | if (b->owner->thread != -1 | |
1329 | && !valid_thread_id (b->owner->thread)) | |
1330 | continue; | |
1331 | ||
879bfdc2 | 1332 | val = insert_bp_location (b, tmp_error_stream, |
fa3a767f | 1333 | &disabled_breaks, |
879bfdc2 DJ |
1334 | &hw_breakpoint_error); |
1335 | if (val) | |
e236ba44 | 1336 | error = val; |
879bfdc2 | 1337 | } |
c906108c | 1338 | |
a5606eee VP |
1339 | /* If we failed to insert all locations of a watchpoint, |
1340 | remove them, as half-inserted watchpoint is of limited use. */ | |
1341 | ALL_BREAKPOINTS (bpt) | |
1342 | { | |
1343 | int some_failed = 0; | |
1344 | struct bp_location *loc; | |
1345 | ||
1346 | if (!is_hardware_watchpoint (bpt)) | |
1347 | continue; | |
1348 | ||
d6b74ac4 | 1349 | if (!breakpoint_enabled (bpt)) |
a5606eee | 1350 | continue; |
74960c60 VP |
1351 | |
1352 | if (bpt->disposition == disp_del_at_next_stop) | |
1353 | continue; | |
a5606eee VP |
1354 | |
1355 | for (loc = bpt->loc; loc; loc = loc->next) | |
1356 | if (!loc->inserted) | |
1357 | { | |
1358 | some_failed = 1; | |
1359 | break; | |
1360 | } | |
1361 | if (some_failed) | |
1362 | { | |
1363 | for (loc = bpt->loc; loc; loc = loc->next) | |
1364 | if (loc->inserted) | |
1365 | remove_breakpoint (loc, mark_uninserted); | |
1366 | ||
1367 | hw_breakpoint_error = 1; | |
1368 | fprintf_unfiltered (tmp_error_stream, | |
1369 | "Could not insert hardware watchpoint %d.\n", | |
1370 | bpt->number); | |
1371 | error = -1; | |
1372 | } | |
1373 | } | |
1374 | ||
e236ba44 | 1375 | if (error) |
81d0cc19 GS |
1376 | { |
1377 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1378 | message about possibly exhausted resources. */ | |
879bfdc2 | 1379 | if (hw_breakpoint_error) |
81d0cc19 | 1380 | { |
c6510018 MS |
1381 | fprintf_unfiltered (tmp_error_stream, |
1382 | "Could not insert hardware breakpoints:\n\ | |
1383 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1384 | } |
81d0cc19 GS |
1385 | target_terminal_ours_for_output (); |
1386 | error_stream (tmp_error_stream); | |
1387 | } | |
f7545552 TT |
1388 | |
1389 | do_cleanups (cleanups); | |
c906108c SS |
1390 | } |
1391 | ||
c906108c | 1392 | int |
fba45db2 | 1393 | remove_breakpoints (void) |
c906108c | 1394 | { |
0bde7532 | 1395 | struct bp_location *b; |
c906108c SS |
1396 | int val; |
1397 | ||
0bde7532 | 1398 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1399 | { |
0bde7532 | 1400 | if (b->inserted) |
c5aa993b JM |
1401 | { |
1402 | val = remove_breakpoint (b, mark_uninserted); | |
1403 | if (val != 0) | |
1404 | return val; | |
1405 | } | |
1406 | } | |
c906108c SS |
1407 | return 0; |
1408 | } | |
1409 | ||
692590c1 | 1410 | int |
80ce1ecb | 1411 | remove_hw_watchpoints (void) |
692590c1 | 1412 | { |
0bde7532 | 1413 | struct bp_location *b; |
692590c1 MS |
1414 | int val; |
1415 | ||
0bde7532 | 1416 | ALL_BP_LOCATIONS (b) |
692590c1 | 1417 | { |
0bde7532 | 1418 | if (b->inserted && b->loc_type == bp_loc_hardware_watchpoint) |
692590c1 MS |
1419 | { |
1420 | val = remove_breakpoint (b, mark_uninserted); | |
1421 | if (val != 0) | |
1422 | return val; | |
1423 | } | |
1424 | } | |
1425 | return 0; | |
1426 | } | |
1427 | ||
c906108c | 1428 | int |
fba45db2 | 1429 | reattach_breakpoints (int pid) |
c906108c | 1430 | { |
0bde7532 | 1431 | struct bp_location *b; |
c906108c | 1432 | int val; |
ce696e05 | 1433 | struct cleanup *old_chain = save_inferior_ptid (); |
a4954f26 | 1434 | struct ui_file *tmp_error_stream = mem_fileopen (); |
fa3a767f | 1435 | int dummy1 = 0, dummy2 = 0; |
a4954f26 DJ |
1436 | |
1437 | make_cleanup_ui_file_delete (tmp_error_stream); | |
c906108c | 1438 | |
ce696e05 | 1439 | inferior_ptid = pid_to_ptid (pid); |
0bde7532 | 1440 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1441 | { |
0bde7532 | 1442 | if (b->inserted) |
c5aa993b | 1443 | { |
a4954f26 DJ |
1444 | b->inserted = 0; |
1445 | val = insert_bp_location (b, tmp_error_stream, | |
fa3a767f | 1446 | &dummy1, &dummy2); |
c5aa993b JM |
1447 | if (val != 0) |
1448 | { | |
ce696e05 | 1449 | do_cleanups (old_chain); |
c5aa993b JM |
1450 | return val; |
1451 | } | |
1452 | } | |
1453 | } | |
ce696e05 | 1454 | do_cleanups (old_chain); |
c906108c SS |
1455 | return 0; |
1456 | } | |
1457 | ||
e58b0e63 PA |
1458 | static int internal_breakpoint_number = -1; |
1459 | ||
e62c965a PP |
1460 | static struct breakpoint * |
1461 | create_internal_breakpoint (CORE_ADDR address, enum bptype type) | |
1462 | { | |
e62c965a PP |
1463 | struct symtab_and_line sal; |
1464 | struct breakpoint *b; | |
1465 | ||
1466 | init_sal (&sal); /* initialize to zeroes */ | |
1467 | ||
1468 | sal.pc = address; | |
1469 | sal.section = find_pc_overlay (sal.pc); | |
1470 | ||
1471 | b = set_raw_breakpoint (sal, type); | |
1472 | b->number = internal_breakpoint_number--; | |
1473 | b->disposition = disp_donttouch; | |
1474 | ||
1475 | return b; | |
1476 | } | |
1477 | ||
1478 | static void | |
1479 | create_overlay_event_breakpoint (char *func_name, struct objfile *objfile) | |
1480 | { | |
1481 | struct breakpoint *b; | |
1482 | struct minimal_symbol *m; | |
1483 | ||
059fb39f PM |
1484 | m = lookup_minimal_symbol_text (func_name, objfile); |
1485 | if (m == NULL) | |
e62c965a PP |
1486 | return; |
1487 | ||
1488 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), | |
1489 | bp_overlay_event); | |
1490 | b->addr_string = xstrdup (func_name); | |
1491 | ||
1492 | if (overlay_debugging == ovly_auto) | |
1493 | { | |
1494 | b->enable_state = bp_enabled; | |
1495 | overlay_events_enabled = 1; | |
1496 | } | |
1497 | else | |
1498 | { | |
1499 | b->enable_state = bp_disabled; | |
1500 | overlay_events_enabled = 0; | |
1501 | } | |
1502 | update_global_location_list (1); | |
1503 | } | |
1504 | ||
c906108c | 1505 | void |
fba45db2 | 1506 | update_breakpoints_after_exec (void) |
c906108c | 1507 | { |
c5aa993b JM |
1508 | struct breakpoint *b; |
1509 | struct breakpoint *temp; | |
25b22b0a | 1510 | struct bp_location *bploc; |
e62c965a | 1511 | struct objfile *objfile; |
c906108c | 1512 | |
25b22b0a PA |
1513 | /* We're about to delete breakpoints from GDB's lists. If the |
1514 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
1515 | writing the breakpoints' "shadow contents" back into memory. The | |
1516 | "shadow contents" are NOT valid after an exec, so GDB should not | |
1517 | do that. Instead, the target is responsible from marking | |
1518 | breakpoints out as soon as it detects an exec. We don't do that | |
1519 | here instead, because there may be other attempts to delete | |
1520 | breakpoints after detecting an exec and before reaching here. */ | |
1521 | ALL_BP_LOCATIONS (bploc) | |
1522 | gdb_assert (!bploc->inserted); | |
c906108c SS |
1523 | |
1524 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1525 | { |
1526 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
1527 | if (b->type == bp_shlib_event) | |
1528 | { | |
1529 | delete_breakpoint (b); | |
1530 | continue; | |
1531 | } | |
c906108c | 1532 | |
1900040c MS |
1533 | /* Thread event breakpoints must be set anew after an exec(), |
1534 | as must overlay event breakpoints. */ | |
1535 | if (b->type == bp_thread_event || b->type == bp_overlay_event) | |
c4093a6a JM |
1536 | { |
1537 | delete_breakpoint (b); | |
1538 | continue; | |
1539 | } | |
1540 | ||
c5aa993b JM |
1541 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1542 | if (b->type == bp_step_resume) | |
1543 | { | |
1544 | delete_breakpoint (b); | |
1545 | continue; | |
1546 | } | |
1547 | ||
611c83ae PA |
1548 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
1549 | after an exec. */ | |
1550 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume) | |
1551 | { | |
1552 | delete_breakpoint (b); | |
1553 | continue; | |
1554 | } | |
1555 | ||
ce78b96d JB |
1556 | if (b->type == bp_catchpoint) |
1557 | { | |
1558 | /* For now, none of the bp_catchpoint breakpoints need to | |
1559 | do anything at this point. In the future, if some of | |
1560 | the catchpoints need to something, we will need to add | |
1561 | a new method, and call this method from here. */ | |
1562 | continue; | |
1563 | } | |
1564 | ||
c5aa993b JM |
1565 | /* bp_finish is a special case. The only way we ought to be able |
1566 | to see one of these when an exec() has happened, is if the user | |
1567 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1568 | carries them to the call-site of the current callee, by setting | |
1569 | a temporary bp there and resuming. But in this case, the finish | |
1570 | will carry them entirely through the vfork & exec. | |
1571 | ||
1572 | We don't want to allow a bp_finish to remain inserted now. But | |
1573 | we can't safely delete it, 'cause finish_command has a handle to | |
1574 | the bp on a bpstat, and will later want to delete it. There's a | |
1575 | chance (and I've seen it happen) that if we delete the bp_finish | |
1576 | here, that its storage will get reused by the time finish_command | |
1577 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1578 | We really must allow finish_command to delete a bp_finish. | |
1579 | ||
53a5351d JM |
1580 | In the absense of a general solution for the "how do we know |
1581 | it's safe to delete something others may have handles to?" | |
1582 | problem, what we'll do here is just uninsert the bp_finish, and | |
1583 | let finish_command delete it. | |
1584 | ||
1585 | (We know the bp_finish is "doomed" in the sense that it's | |
1586 | momentary, and will be deleted as soon as finish_command sees | |
1587 | the inferior stopped. So it doesn't matter that the bp's | |
1588 | address is probably bogus in the new a.out, unlike e.g., the | |
1589 | solib breakpoints.) */ | |
c5aa993b | 1590 | |
c5aa993b JM |
1591 | if (b->type == bp_finish) |
1592 | { | |
1593 | continue; | |
1594 | } | |
1595 | ||
1596 | /* Without a symbolic address, we have little hope of the | |
1597 | pre-exec() address meaning the same thing in the post-exec() | |
1598 | a.out. */ | |
1599 | if (b->addr_string == NULL) | |
1600 | { | |
1601 | delete_breakpoint (b); | |
1602 | continue; | |
1603 | } | |
c5aa993b | 1604 | } |
1900040c | 1605 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
e62c965a PP |
1606 | ALL_OBJFILES (objfile) |
1607 | create_overlay_event_breakpoint ("_ovly_debug_event", objfile); | |
c906108c SS |
1608 | } |
1609 | ||
1610 | int | |
fba45db2 | 1611 | detach_breakpoints (int pid) |
c906108c | 1612 | { |
0bde7532 | 1613 | struct bp_location *b; |
c906108c | 1614 | int val; |
ce696e05 | 1615 | struct cleanup *old_chain = save_inferior_ptid (); |
c5aa993b | 1616 | |
39f77062 | 1617 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 1618 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 1619 | |
ce696e05 KB |
1620 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1621 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1622 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1623 | { |
0bde7532 | 1624 | if (b->inserted) |
c5aa993b JM |
1625 | { |
1626 | val = remove_breakpoint (b, mark_inserted); | |
1627 | if (val != 0) | |
1628 | { | |
ce696e05 | 1629 | do_cleanups (old_chain); |
c5aa993b JM |
1630 | return val; |
1631 | } | |
1632 | } | |
1633 | } | |
ce696e05 | 1634 | do_cleanups (old_chain); |
c906108c SS |
1635 | return 0; |
1636 | } | |
1637 | ||
1638 | static int | |
0bde7532 | 1639 | remove_breakpoint (struct bp_location *b, insertion_state_t is) |
c906108c SS |
1640 | { |
1641 | int val; | |
c5aa993b | 1642 | |
0bde7532 | 1643 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
1644 | /* Permanent breakpoints cannot be inserted or removed. */ |
1645 | return 0; | |
1646 | ||
74960c60 VP |
1647 | /* The type of none suggests that owner is actually deleted. |
1648 | This should not ever happen. */ | |
1649 | gdb_assert (b->owner->type != bp_none); | |
0bde7532 DJ |
1650 | |
1651 | if (b->loc_type == bp_loc_software_breakpoint | |
1652 | || b->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 1653 | { |
c02f5703 MS |
1654 | /* "Normal" instruction breakpoint: either the standard |
1655 | trap-instruction bp (bp_breakpoint), or a | |
1656 | bp_hardware_breakpoint. */ | |
1657 | ||
1658 | /* First check to see if we have to handle an overlay. */ | |
1659 | if (overlay_debugging == ovly_off | |
0bde7532 DJ |
1660 | || b->section == NULL |
1661 | || !(section_is_overlay (b->section))) | |
c02f5703 MS |
1662 | { |
1663 | /* No overlay handling: just remove the breakpoint. */ | |
1664 | ||
0bde7532 | 1665 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1666 | val = target_remove_hw_breakpoint (&b->target_info); |
c02f5703 | 1667 | else |
8181d85f | 1668 | val = target_remove_breakpoint (&b->target_info); |
c02f5703 | 1669 | } |
c906108c SS |
1670 | else |
1671 | { | |
c02f5703 MS |
1672 | /* This breakpoint is in an overlay section. |
1673 | Did we set a breakpoint at the LMA? */ | |
1674 | if (!overlay_events_enabled) | |
1675 | { | |
1676 | /* Yes -- overlay event support is not active, so we | |
1677 | should have set a breakpoint at the LMA. Remove it. | |
1678 | */ | |
c02f5703 MS |
1679 | /* Ignore any failures: if the LMA is in ROM, we will |
1680 | have already warned when we failed to insert it. */ | |
0bde7532 | 1681 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1682 | target_remove_hw_breakpoint (&b->overlay_target_info); |
c02f5703 | 1683 | else |
8181d85f | 1684 | target_remove_breakpoint (&b->overlay_target_info); |
c02f5703 MS |
1685 | } |
1686 | /* Did we set a breakpoint at the VMA? | |
1687 | If so, we will have marked the breakpoint 'inserted'. */ | |
0bde7532 | 1688 | if (b->inserted) |
c906108c | 1689 | { |
c02f5703 MS |
1690 | /* Yes -- remove it. Previously we did not bother to |
1691 | remove the breakpoint if the section had been | |
1692 | unmapped, but let's not rely on that being safe. We | |
1693 | don't know what the overlay manager might do. */ | |
0bde7532 | 1694 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1695 | val = target_remove_hw_breakpoint (&b->target_info); |
aa67235e UW |
1696 | |
1697 | /* However, we should remove *software* breakpoints only | |
1698 | if the section is still mapped, or else we overwrite | |
1699 | wrong code with the saved shadow contents. */ | |
1700 | else if (section_is_mapped (b->section)) | |
8181d85f | 1701 | val = target_remove_breakpoint (&b->target_info); |
aa67235e UW |
1702 | else |
1703 | val = 0; | |
c906108c | 1704 | } |
c02f5703 MS |
1705 | else |
1706 | { | |
1707 | /* No -- not inserted, so no need to remove. No error. */ | |
1708 | val = 0; | |
1709 | } | |
c906108c | 1710 | } |
879d1e6b UW |
1711 | |
1712 | /* In some cases, we might not be able to remove a breakpoint | |
1713 | in a shared library that has already been removed, but we | |
1714 | have not yet processed the shlib unload event. */ | |
f5c9a895 | 1715 | if (val && solib_name_from_address (b->address)) |
879d1e6b UW |
1716 | val = 0; |
1717 | ||
c906108c SS |
1718 | if (val) |
1719 | return val; | |
0bde7532 | 1720 | b->inserted = (is == mark_inserted); |
c906108c | 1721 | } |
a5606eee | 1722 | else if (b->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 1723 | { |
278cd55f AC |
1724 | struct value *v; |
1725 | struct value *n; | |
c5aa993b | 1726 | |
0bde7532 | 1727 | b->inserted = (is == mark_inserted); |
a5606eee VP |
1728 | val = target_remove_watchpoint (b->address, b->length, |
1729 | b->watchpoint_type); | |
2e70b7b9 | 1730 | |
c906108c | 1731 | /* Failure to remove any of the hardware watchpoints comes here. */ |
0bde7532 | 1732 | if ((is == mark_uninserted) && (b->inserted)) |
8a3fe4f8 | 1733 | warning (_("Could not remove hardware watchpoint %d."), |
0bde7532 | 1734 | b->owner->number); |
c906108c | 1735 | } |
ce78b96d JB |
1736 | else if (b->owner->type == bp_catchpoint |
1737 | && breakpoint_enabled (b->owner) | |
1738 | && !b->duplicate) | |
1739 | { | |
1740 | gdb_assert (b->owner->ops != NULL && b->owner->ops->remove != NULL); | |
1741 | ||
1742 | val = b->owner->ops->remove (b->owner); | |
1743 | if (val) | |
1744 | return val; | |
1745 | b->inserted = (is == mark_inserted); | |
1746 | } | |
c906108c SS |
1747 | |
1748 | return 0; | |
1749 | } | |
1750 | ||
1751 | /* Clear the "inserted" flag in all breakpoints. */ | |
1752 | ||
25b22b0a | 1753 | void |
fba45db2 | 1754 | mark_breakpoints_out (void) |
c906108c | 1755 | { |
075f6582 | 1756 | struct bp_location *bpt; |
c906108c | 1757 | |
075f6582 DJ |
1758 | ALL_BP_LOCATIONS (bpt) |
1759 | bpt->inserted = 0; | |
c906108c SS |
1760 | } |
1761 | ||
53a5351d JM |
1762 | /* Clear the "inserted" flag in all breakpoints and delete any |
1763 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1764 | |
1765 | Plus other such housekeeping that has to be done for breakpoints | |
1766 | between runs. | |
1767 | ||
53a5351d JM |
1768 | Note: this function gets called at the end of a run (by |
1769 | generic_mourn_inferior) and when a run begins (by | |
1770 | init_wait_for_inferior). */ | |
c906108c SS |
1771 | |
1772 | ||
1773 | ||
1774 | void | |
fba45db2 | 1775 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 1776 | { |
52f0bd74 | 1777 | struct breakpoint *b, *temp; |
075f6582 | 1778 | struct bp_location *bpt; |
1c5cfe86 | 1779 | int ix; |
c906108c | 1780 | |
50c71eaf PA |
1781 | /* If breakpoint locations are shared across processes, then there's |
1782 | nothing to do. */ | |
2567c7d9 | 1783 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
1784 | return; |
1785 | ||
075f6582 | 1786 | ALL_BP_LOCATIONS (bpt) |
514f746b AR |
1787 | if (bpt->owner->enable_state != bp_permanent) |
1788 | bpt->inserted = 0; | |
075f6582 | 1789 | |
c906108c | 1790 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 1791 | { |
c5aa993b JM |
1792 | switch (b->type) |
1793 | { | |
1794 | case bp_call_dummy: | |
1795 | case bp_watchpoint_scope: | |
c906108c | 1796 | |
c5aa993b JM |
1797 | /* If the call dummy breakpoint is at the entry point it will |
1798 | cause problems when the inferior is rerun, so we better | |
1799 | get rid of it. | |
c906108c | 1800 | |
c5aa993b JM |
1801 | Also get rid of scope breakpoints. */ |
1802 | delete_breakpoint (b); | |
1803 | break; | |
c906108c | 1804 | |
c5aa993b JM |
1805 | case bp_watchpoint: |
1806 | case bp_hardware_watchpoint: | |
1807 | case bp_read_watchpoint: | |
1808 | case bp_access_watchpoint: | |
c906108c | 1809 | |
c5aa993b JM |
1810 | /* Likewise for watchpoints on local expressions. */ |
1811 | if (b->exp_valid_block != NULL) | |
1812 | delete_breakpoint (b); | |
967af18d | 1813 | else if (context == inf_starting) |
c860120c PM |
1814 | { |
1815 | /* Reset val field to force reread of starting value | |
1816 | in insert_breakpoints. */ | |
1817 | if (b->val) | |
1818 | value_free (b->val); | |
1819 | b->val = NULL; | |
fa4727a6 | 1820 | b->val_valid = 0; |
c860120c | 1821 | } |
c5aa993b JM |
1822 | break; |
1823 | default: | |
c5aa993b JM |
1824 | break; |
1825 | } | |
1826 | } | |
1c5cfe86 PA |
1827 | |
1828 | /* Get rid of the moribund locations. */ | |
1829 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bpt); ++ix) | |
1830 | free_bp_location (bpt); | |
1831 | VEC_free (bp_location_p, moribund_locations); | |
c906108c SS |
1832 | } |
1833 | ||
c2c6d25f JM |
1834 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1835 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1836 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1837 | permanent breakpoint. | |
1838 | - When continuing from a location with an ordinary breakpoint, we | |
1839 | actually single step once before calling insert_breakpoints. | |
1840 | - When continuing from a localion with a permanent breakpoint, we | |
1841 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1842 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1843 | |
c2c6d25f | 1844 | enum breakpoint_here |
fba45db2 | 1845 | breakpoint_here_p (CORE_ADDR pc) |
c906108c | 1846 | { |
89f9893c | 1847 | const struct bp_location *bpt; |
c2c6d25f | 1848 | int any_breakpoint_here = 0; |
c906108c | 1849 | |
075f6582 DJ |
1850 | ALL_BP_LOCATIONS (bpt) |
1851 | { | |
1852 | if (bpt->loc_type != bp_loc_software_breakpoint | |
1853 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1854 | continue; | |
1855 | ||
468d015d | 1856 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1857 | || bpt->owner->enable_state == bp_permanent) |
1858 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1859 | { | |
1860 | if (overlay_debugging | |
1861 | && section_is_overlay (bpt->section) | |
1862 | && !section_is_mapped (bpt->section)) | |
1863 | continue; /* unmapped overlay -- can't be a match */ | |
1864 | else if (bpt->owner->enable_state == bp_permanent) | |
1865 | return permanent_breakpoint_here; | |
1866 | else | |
1867 | any_breakpoint_here = 1; | |
1868 | } | |
1869 | } | |
c906108c | 1870 | |
c2c6d25f | 1871 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1872 | } |
1873 | ||
1c5cfe86 PA |
1874 | /* Return true if there's a moribund breakpoint at PC. */ |
1875 | ||
1876 | int | |
1877 | moribund_breakpoint_here_p (CORE_ADDR pc) | |
1878 | { | |
1879 | struct bp_location *loc; | |
1880 | int ix; | |
1881 | ||
1882 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
1883 | if (loc->address == pc) | |
1884 | return 1; | |
1885 | ||
1886 | return 0; | |
1887 | } | |
c2c6d25f | 1888 | |
c36b740a VP |
1889 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
1890 | inserted using regular breakpoint_chain/bp_location_chain mechanism. | |
1891 | This does not check for single-step breakpoints, which are | |
1892 | inserted and removed using direct target manipulation. */ | |
c906108c SS |
1893 | |
1894 | int | |
c36b740a | 1895 | regular_breakpoint_inserted_here_p (CORE_ADDR pc) |
c906108c | 1896 | { |
89f9893c | 1897 | const struct bp_location *bpt; |
c906108c | 1898 | |
075f6582 | 1899 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1900 | { |
075f6582 DJ |
1901 | if (bpt->loc_type != bp_loc_software_breakpoint |
1902 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1903 | continue; | |
1904 | ||
1905 | if (bpt->inserted | |
1906 | && bpt->address == pc) /* bp is inserted and matches pc */ | |
1907 | { | |
1908 | if (overlay_debugging | |
1909 | && section_is_overlay (bpt->section) | |
1910 | && !section_is_mapped (bpt->section)) | |
1911 | continue; /* unmapped overlay -- can't be a match */ | |
1912 | else | |
1913 | return 1; | |
1914 | } | |
c5aa993b | 1915 | } |
c36b740a VP |
1916 | return 0; |
1917 | } | |
1918 | ||
1919 | /* Returns non-zero iff there's either regular breakpoint | |
1920 | or a single step breakpoint inserted at PC. */ | |
1921 | ||
1922 | int | |
1923 | breakpoint_inserted_here_p (CORE_ADDR pc) | |
1924 | { | |
1925 | if (regular_breakpoint_inserted_here_p (pc)) | |
1926 | return 1; | |
c906108c | 1927 | |
1aafd4da UW |
1928 | if (single_step_breakpoint_inserted_here_p (pc)) |
1929 | return 1; | |
1930 | ||
c906108c SS |
1931 | return 0; |
1932 | } | |
1933 | ||
4fa8626c DJ |
1934 | /* This function returns non-zero iff there is a software breakpoint |
1935 | inserted at PC. */ | |
1936 | ||
1937 | int | |
1938 | software_breakpoint_inserted_here_p (CORE_ADDR pc) | |
1939 | { | |
89f9893c | 1940 | const struct bp_location *bpt; |
4fa8626c DJ |
1941 | int any_breakpoint_here = 0; |
1942 | ||
1943 | ALL_BP_LOCATIONS (bpt) | |
1944 | { | |
1945 | if (bpt->loc_type != bp_loc_software_breakpoint) | |
1946 | continue; | |
1947 | ||
0d381245 | 1948 | if (bpt->inserted |
4fa8626c DJ |
1949 | && bpt->address == pc) /* bp is enabled and matches pc */ |
1950 | { | |
1951 | if (overlay_debugging | |
1952 | && section_is_overlay (bpt->section) | |
1953 | && !section_is_mapped (bpt->section)) | |
1954 | continue; /* unmapped overlay -- can't be a match */ | |
1955 | else | |
1956 | return 1; | |
1957 | } | |
1958 | } | |
1959 | ||
1aafd4da UW |
1960 | /* Also check for software single-step breakpoints. */ |
1961 | if (single_step_breakpoint_inserted_here_p (pc)) | |
1962 | return 1; | |
1963 | ||
4fa8626c DJ |
1964 | return 0; |
1965 | } | |
1966 | ||
075f6582 DJ |
1967 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
1968 | PC is valid for process/thread PTID. */ | |
c906108c SS |
1969 | |
1970 | int | |
39f77062 | 1971 | breakpoint_thread_match (CORE_ADDR pc, ptid_t ptid) |
c906108c | 1972 | { |
89f9893c | 1973 | const struct bp_location *bpt; |
4a306c9a | 1974 | /* The thread and task IDs associated to PTID, computed lazily. */ |
a6f1cd96 | 1975 | int thread = -1; |
4a306c9a | 1976 | int task = 0; |
a6f1cd96 | 1977 | |
075f6582 | 1978 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1979 | { |
075f6582 DJ |
1980 | if (bpt->loc_type != bp_loc_software_breakpoint |
1981 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1982 | continue; | |
1983 | ||
a6f1cd96 JB |
1984 | if (!breakpoint_enabled (bpt->owner) |
1985 | && bpt->owner->enable_state != bp_permanent) | |
1986 | continue; | |
1987 | ||
1988 | if (bpt->address != pc) | |
1989 | continue; | |
1990 | ||
1991 | if (bpt->owner->thread != -1) | |
075f6582 | 1992 | { |
a6f1cd96 JB |
1993 | /* This is a thread-specific breakpoint. Check that ptid |
1994 | matches that thread. If thread hasn't been computed yet, | |
1995 | it is now time to do so. */ | |
1996 | if (thread == -1) | |
1997 | thread = pid_to_thread_id (ptid); | |
1998 | if (bpt->owner->thread != thread) | |
1999 | continue; | |
075f6582 | 2000 | } |
a6f1cd96 | 2001 | |
4a306c9a JB |
2002 | if (bpt->owner->task != 0) |
2003 | { | |
2004 | /* This is a task-specific breakpoint. Check that ptid | |
2005 | matches that task. If task hasn't been computed yet, | |
2006 | it is now time to do so. */ | |
2007 | if (task == 0) | |
2008 | task = ada_get_task_number (ptid); | |
2009 | if (bpt->owner->task != task) | |
2010 | continue; | |
2011 | } | |
2012 | ||
a6f1cd96 JB |
2013 | if (overlay_debugging |
2014 | && section_is_overlay (bpt->section) | |
2015 | && !section_is_mapped (bpt->section)) | |
2016 | continue; /* unmapped overlay -- can't be a match */ | |
2017 | ||
2018 | return 1; | |
c5aa993b | 2019 | } |
c906108c SS |
2020 | |
2021 | return 0; | |
2022 | } | |
c906108c | 2023 | \f |
c5aa993b | 2024 | |
c906108c SS |
2025 | /* bpstat stuff. External routines' interfaces are documented |
2026 | in breakpoint.h. */ | |
2027 | ||
2028 | int | |
fba45db2 | 2029 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c | 2030 | { |
533be4dd | 2031 | return (ep->type == bp_catchpoint); |
c906108c SS |
2032 | } |
2033 | ||
198757a8 VP |
2034 | void |
2035 | bpstat_free (bpstat bs) | |
2036 | { | |
2037 | if (bs->old_val != NULL) | |
2038 | value_free (bs->old_val); | |
2039 | free_command_lines (&bs->commands); | |
2040 | xfree (bs); | |
2041 | } | |
2042 | ||
c906108c SS |
2043 | /* Clear a bpstat so that it says we are not at any breakpoint. |
2044 | Also free any storage that is part of a bpstat. */ | |
2045 | ||
2046 | void | |
fba45db2 | 2047 | bpstat_clear (bpstat *bsp) |
c906108c SS |
2048 | { |
2049 | bpstat p; | |
2050 | bpstat q; | |
2051 | ||
2052 | if (bsp == 0) | |
2053 | return; | |
2054 | p = *bsp; | |
2055 | while (p != NULL) | |
2056 | { | |
2057 | q = p->next; | |
198757a8 | 2058 | bpstat_free (p); |
c906108c SS |
2059 | p = q; |
2060 | } | |
2061 | *bsp = NULL; | |
2062 | } | |
2063 | ||
2064 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
2065 | is part of the bpstat is copied as well. */ | |
2066 | ||
2067 | bpstat | |
fba45db2 | 2068 | bpstat_copy (bpstat bs) |
c906108c SS |
2069 | { |
2070 | bpstat p = NULL; | |
2071 | bpstat tmp; | |
2072 | bpstat retval = NULL; | |
2073 | ||
2074 | if (bs == NULL) | |
2075 | return bs; | |
2076 | ||
2077 | for (; bs != NULL; bs = bs->next) | |
2078 | { | |
2079 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
2080 | memcpy (tmp, bs, sizeof (*tmp)); | |
31cc81e9 DJ |
2081 | if (bs->commands != NULL) |
2082 | tmp->commands = copy_command_lines (bs->commands); | |
2083 | if (bs->old_val != NULL) | |
3c3185ac JK |
2084 | { |
2085 | tmp->old_val = value_copy (bs->old_val); | |
2086 | release_value (tmp->old_val); | |
2087 | } | |
31cc81e9 | 2088 | |
c906108c SS |
2089 | if (p == NULL) |
2090 | /* This is the first thing in the chain. */ | |
2091 | retval = tmp; | |
2092 | else | |
2093 | p->next = tmp; | |
2094 | p = tmp; | |
2095 | } | |
2096 | p->next = NULL; | |
2097 | return retval; | |
2098 | } | |
2099 | ||
2100 | /* Find the bpstat associated with this breakpoint */ | |
2101 | ||
2102 | bpstat | |
fba45db2 | 2103 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 2104 | { |
c5aa993b JM |
2105 | if (bsp == NULL) |
2106 | return NULL; | |
c906108c | 2107 | |
c5aa993b JM |
2108 | for (; bsp != NULL; bsp = bsp->next) |
2109 | { | |
4f8d1dc6 | 2110 | if (bsp->breakpoint_at && bsp->breakpoint_at->owner == breakpoint) |
c5aa993b JM |
2111 | return bsp; |
2112 | } | |
c906108c SS |
2113 | return NULL; |
2114 | } | |
2115 | ||
2116 | /* Find a step_resume breakpoint associated with this bpstat. | |
2117 | (If there are multiple step_resume bp's on the list, this function | |
2118 | will arbitrarily pick one.) | |
2119 | ||
2120 | It is an error to use this function if BPSTAT doesn't contain a | |
2121 | step_resume breakpoint. | |
2122 | ||
2123 | See wait_for_inferior's use of this function. */ | |
2124 | struct breakpoint * | |
fba45db2 | 2125 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c | 2126 | { |
8601f500 MS |
2127 | int current_thread; |
2128 | ||
8a3fe4f8 | 2129 | gdb_assert (bsp != NULL); |
c906108c | 2130 | |
8601f500 MS |
2131 | current_thread = pid_to_thread_id (inferior_ptid); |
2132 | ||
c906108c SS |
2133 | for (; bsp != NULL; bsp = bsp->next) |
2134 | { | |
059fb39f PM |
2135 | if ((bsp->breakpoint_at != NULL) |
2136 | && (bsp->breakpoint_at->owner->type == bp_step_resume) | |
2137 | && (bsp->breakpoint_at->owner->thread == current_thread | |
2138 | || bsp->breakpoint_at->owner->thread == -1)) | |
4f8d1dc6 | 2139 | return bsp->breakpoint_at->owner; |
c906108c SS |
2140 | } |
2141 | ||
8a3fe4f8 | 2142 | internal_error (__FILE__, __LINE__, _("No step_resume breakpoint found.")); |
c906108c SS |
2143 | } |
2144 | ||
2145 | ||
8671a17b | 2146 | /* Put in *NUM the breakpoint number of the first breakpoint we are stopped |
c906108c SS |
2147 | at. *BSP upon return is a bpstat which points to the remaining |
2148 | breakpoints stopped at (but which is not guaranteed to be good for | |
2149 | anything but further calls to bpstat_num). | |
8671a17b PA |
2150 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
2151 | Return -1 if stopped at a breakpoint that has been deleted since | |
2152 | we set it. | |
2153 | Return 1 otherwise. */ | |
c906108c SS |
2154 | |
2155 | int | |
8671a17b | 2156 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
2157 | { |
2158 | struct breakpoint *b; | |
2159 | ||
2160 | if ((*bsp) == NULL) | |
2161 | return 0; /* No more breakpoint values */ | |
8671a17b | 2162 | |
4f8d1dc6 VP |
2163 | /* We assume we'll never have several bpstats that |
2164 | correspond to a single breakpoint -- otherwise, | |
2165 | this function might return the same number more | |
2166 | than once and this will look ugly. */ | |
2167 | b = (*bsp)->breakpoint_at ? (*bsp)->breakpoint_at->owner : NULL; | |
8671a17b PA |
2168 | *bsp = (*bsp)->next; |
2169 | if (b == NULL) | |
2170 | return -1; /* breakpoint that's been deleted since */ | |
2171 | ||
2172 | *num = b->number; /* We have its number */ | |
2173 | return 1; | |
c906108c SS |
2174 | } |
2175 | ||
2176 | /* Modify BS so that the actions will not be performed. */ | |
2177 | ||
2178 | void | |
fba45db2 | 2179 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
2180 | { |
2181 | for (; bs != NULL; bs = bs->next) | |
2182 | { | |
c2b8ed2c | 2183 | free_command_lines (&bs->commands); |
c906108c SS |
2184 | if (bs->old_val != NULL) |
2185 | { | |
2186 | value_free (bs->old_val); | |
2187 | bs->old_val = NULL; | |
2188 | } | |
2189 | } | |
2190 | } | |
2191 | ||
f3b1572e PA |
2192 | /* Called when a command is about to proceed the inferior. */ |
2193 | ||
2194 | static void | |
2195 | breakpoint_about_to_proceed (void) | |
2196 | { | |
2197 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
2198 | { | |
2199 | struct thread_info *tp = inferior_thread (); | |
2200 | ||
2201 | /* Allow inferior function calls in breakpoint commands to not | |
2202 | interrupt the command list. When the call finishes | |
2203 | successfully, the inferior will be standing at the same | |
2204 | breakpoint as if nothing happened. */ | |
2205 | if (tp->in_infcall) | |
2206 | return; | |
2207 | } | |
2208 | ||
2209 | breakpoint_proceeded = 1; | |
2210 | } | |
2211 | ||
c906108c | 2212 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ |
c906108c | 2213 | static void |
4efb68b1 | 2214 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
2215 | { |
2216 | executing_breakpoint_commands = 0; | |
2217 | } | |
2218 | ||
2219 | /* Execute all the commands associated with all the breakpoints at this | |
2220 | location. Any of these commands could cause the process to proceed | |
2221 | beyond this point, etc. We look out for such changes by checking | |
347bddb7 | 2222 | the global "breakpoint_proceeded" after each command. |
c906108c | 2223 | |
347bddb7 PA |
2224 | Returns true if a breakpoint command resumed the inferior. In that |
2225 | case, it is the caller's responsibility to recall it again with the | |
2226 | bpstat of the current thread. */ | |
2227 | ||
2228 | static int | |
2229 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
2230 | { |
2231 | bpstat bs; | |
2232 | struct cleanup *old_chain; | |
347bddb7 | 2233 | int again = 0; |
c906108c SS |
2234 | |
2235 | /* Avoid endless recursion if a `source' command is contained | |
2236 | in bs->commands. */ | |
2237 | if (executing_breakpoint_commands) | |
347bddb7 | 2238 | return 0; |
c906108c SS |
2239 | |
2240 | executing_breakpoint_commands = 1; | |
2241 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
2242 | ||
c906108c SS |
2243 | /* This pointer will iterate over the list of bpstat's. */ |
2244 | bs = *bsp; | |
2245 | ||
2246 | breakpoint_proceeded = 0; | |
2247 | for (; bs != NULL; bs = bs->next) | |
2248 | { | |
6c50ab1c JB |
2249 | struct command_line *cmd; |
2250 | struct cleanup *this_cmd_tree_chain; | |
2251 | ||
2252 | /* Take ownership of the BSP's command tree, if it has one. | |
2253 | ||
2254 | The command tree could legitimately contain commands like | |
2255 | 'step' and 'next', which call clear_proceed_status, which | |
2256 | frees stop_bpstat's command tree. To make sure this doesn't | |
2257 | free the tree we're executing out from under us, we need to | |
2258 | take ownership of the tree ourselves. Since a given bpstat's | |
2259 | commands are only executed once, we don't need to copy it; we | |
2260 | can clear the pointer in the bpstat, and make sure we free | |
2261 | the tree when we're done. */ | |
c906108c | 2262 | cmd = bs->commands; |
6c50ab1c JB |
2263 | bs->commands = 0; |
2264 | this_cmd_tree_chain = make_cleanup_free_command_lines (&cmd); | |
2265 | ||
c906108c SS |
2266 | while (cmd != NULL) |
2267 | { | |
2268 | execute_control_command (cmd); | |
2269 | ||
2270 | if (breakpoint_proceeded) | |
2271 | break; | |
2272 | else | |
2273 | cmd = cmd->next; | |
2274 | } | |
6c50ab1c JB |
2275 | |
2276 | /* We can free this command tree now. */ | |
2277 | do_cleanups (this_cmd_tree_chain); | |
2278 | ||
c906108c | 2279 | if (breakpoint_proceeded) |
32c1e744 VP |
2280 | { |
2281 | if (target_can_async_p ()) | |
347bddb7 PA |
2282 | /* If we are in async mode, then the target might be still |
2283 | running, not stopped at any breakpoint, so nothing for | |
2284 | us to do here -- just return to the event loop. */ | |
2285 | ; | |
32c1e744 VP |
2286 | else |
2287 | /* In sync mode, when execute_control_command returns | |
2288 | we're already standing on the next breakpoint. | |
347bddb7 PA |
2289 | Breakpoint commands for that stop were not run, since |
2290 | execute_command does not run breakpoint commands -- | |
2291 | only command_line_handler does, but that one is not | |
2292 | involved in execution of breakpoint commands. So, we | |
2293 | can now execute breakpoint commands. It should be | |
2294 | noted that making execute_command do bpstat actions is | |
2295 | not an option -- in this case we'll have recursive | |
2296 | invocation of bpstat for each breakpoint with a | |
2297 | command, and can easily blow up GDB stack. Instead, we | |
2298 | return true, which will trigger the caller to recall us | |
2299 | with the new stop_bpstat. */ | |
2300 | again = 1; | |
2301 | break; | |
32c1e744 | 2302 | } |
c906108c | 2303 | } |
c2b8ed2c | 2304 | do_cleanups (old_chain); |
347bddb7 PA |
2305 | return again; |
2306 | } | |
2307 | ||
2308 | void | |
2309 | bpstat_do_actions (void) | |
2310 | { | |
2311 | /* Do any commands attached to breakpoint we are stopped at. */ | |
2312 | while (!ptid_equal (inferior_ptid, null_ptid) | |
2313 | && target_has_execution | |
2314 | && !is_exited (inferior_ptid) | |
2315 | && !is_executing (inferior_ptid)) | |
2316 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
2317 | and only return when it is stopped at the next breakpoint, we | |
2318 | keep doing breakpoint actions until it returns false to | |
2319 | indicate the inferior was not resumed. */ | |
2320 | if (!bpstat_do_actions_1 (&inferior_thread ()->stop_bpstat)) | |
2321 | break; | |
c906108c SS |
2322 | } |
2323 | ||
fa4727a6 DJ |
2324 | /* Print out the (old or new) value associated with a watchpoint. */ |
2325 | ||
2326 | static void | |
2327 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
2328 | { | |
2329 | if (val == NULL) | |
2330 | fprintf_unfiltered (stream, _("<unreadable>")); | |
2331 | else | |
79a45b7d TT |
2332 | { |
2333 | struct value_print_options opts; | |
2334 | get_user_print_options (&opts); | |
2335 | value_print (val, stream, &opts); | |
2336 | } | |
fa4727a6 DJ |
2337 | } |
2338 | ||
e514a9d6 | 2339 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 2340 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
2341 | by having it set different print_it values. |
2342 | ||
2343 | Current scheme: When we stop, bpstat_print() is called. It loops | |
2344 | through the bpstat list of things causing this stop, calling the | |
2345 | print_bp_stop_message function on each one. The behavior of the | |
2346 | print_bp_stop_message function depends on the print_it field of | |
2347 | bpstat. If such field so indicates, call this function here. | |
2348 | ||
2349 | Return values from this routine (ultimately used by bpstat_print() | |
2350 | and normal_stop() to decide what to do): | |
2351 | PRINT_NOTHING: Means we already printed all we needed to print, | |
2352 | don't print anything else. | |
2353 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
2354 | that something to be followed by a location. | |
2355 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
2356 | that something to be followed by a location. | |
2357 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
2358 | analysis. */ | |
c906108c | 2359 | |
917317f4 | 2360 | static enum print_stop_action |
fba45db2 | 2361 | print_it_typical (bpstat bs) |
c906108c | 2362 | { |
f7545552 | 2363 | struct cleanup *old_chain; |
4f8d1dc6 | 2364 | struct breakpoint *b; |
89f9893c | 2365 | const struct bp_location *bl; |
8b93c638 | 2366 | struct ui_stream *stb; |
f7545552 TT |
2367 | int bp_temp = 0; |
2368 | enum print_stop_action result; | |
2369 | ||
c906108c SS |
2370 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
2371 | which has since been deleted. */ | |
e514a9d6 | 2372 | if (bs->breakpoint_at == NULL) |
917317f4 | 2373 | return PRINT_UNKNOWN; |
0d381245 VP |
2374 | bl = bs->breakpoint_at; |
2375 | b = bl->owner; | |
c906108c | 2376 | |
f7545552 TT |
2377 | stb = ui_out_stream_new (uiout); |
2378 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
2379 | ||
4f8d1dc6 | 2380 | switch (b->type) |
c906108c | 2381 | { |
e514a9d6 JM |
2382 | case bp_breakpoint: |
2383 | case bp_hardware_breakpoint: | |
2cec12e5 | 2384 | bp_temp = bs->breakpoint_at->owner->disposition == disp_del; |
0d381245 VP |
2385 | if (bl->address != bl->requested_address) |
2386 | breakpoint_adjustment_warning (bl->requested_address, | |
2387 | bl->address, | |
4f8d1dc6 VP |
2388 | b->number, 1); |
2389 | annotate_breakpoint (b->number); | |
2cec12e5 AR |
2390 | if (bp_temp) |
2391 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
2392 | else | |
2393 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 2394 | if (ui_out_is_mi_like_p (uiout)) |
2cec12e5 AR |
2395 | { |
2396 | ui_out_field_string (uiout, "reason", | |
2397 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
2398 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
2399 | } | |
4f8d1dc6 | 2400 | ui_out_field_int (uiout, "bkptno", b->number); |
8b93c638 | 2401 | ui_out_text (uiout, ", "); |
f7545552 | 2402 | result = PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2403 | break; |
2404 | ||
2405 | case bp_shlib_event: | |
917317f4 JM |
2406 | /* Did we stop because the user set the stop_on_solib_events |
2407 | variable? (If so, we report this as a generic, "Stopped due | |
2408 | to shlib event" message.) */ | |
a3f17187 | 2409 | printf_filtered (_("Stopped due to shared library event\n")); |
f7545552 | 2410 | result = PRINT_NOTHING; |
e514a9d6 JM |
2411 | break; |
2412 | ||
c4093a6a JM |
2413 | case bp_thread_event: |
2414 | /* Not sure how we will get here. | |
2415 | GDB should not stop for these breakpoints. */ | |
a3f17187 | 2416 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 2417 | result = PRINT_NOTHING; |
c4093a6a JM |
2418 | break; |
2419 | ||
1900040c MS |
2420 | case bp_overlay_event: |
2421 | /* By analogy with the thread event, GDB should not stop for these. */ | |
a3f17187 | 2422 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 2423 | result = PRINT_NOTHING; |
1900040c MS |
2424 | break; |
2425 | ||
e514a9d6 JM |
2426 | case bp_watchpoint: |
2427 | case bp_hardware_watchpoint: | |
fa4727a6 DJ |
2428 | annotate_watchpoint (b->number); |
2429 | if (ui_out_is_mi_like_p (uiout)) | |
2430 | ui_out_field_string | |
2431 | (uiout, "reason", | |
2432 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
2433 | mention (b); | |
f7545552 | 2434 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
fa4727a6 DJ |
2435 | ui_out_text (uiout, "\nOld value = "); |
2436 | watchpoint_value_print (bs->old_val, stb->stream); | |
2437 | ui_out_field_stream (uiout, "old", stb); | |
2438 | ui_out_text (uiout, "\nNew value = "); | |
2439 | watchpoint_value_print (b->val, stb->stream); | |
2440 | ui_out_field_stream (uiout, "new", stb); | |
fa4727a6 | 2441 | ui_out_text (uiout, "\n"); |
e514a9d6 | 2442 | /* More than one watchpoint may have been triggered. */ |
f7545552 | 2443 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
2444 | break; |
2445 | ||
2446 | case bp_read_watchpoint: | |
9dc5e2a9 | 2447 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2448 | ui_out_field_string |
2449 | (uiout, "reason", | |
2450 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 2451 | mention (b); |
f7545552 | 2452 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 2453 | ui_out_text (uiout, "\nValue = "); |
fa4727a6 | 2454 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 2455 | ui_out_field_stream (uiout, "value", stb); |
8b93c638 | 2456 | ui_out_text (uiout, "\n"); |
f7545552 | 2457 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
2458 | break; |
2459 | ||
2460 | case bp_access_watchpoint: | |
fa4727a6 | 2461 | if (bs->old_val != NULL) |
8b93c638 | 2462 | { |
4f8d1dc6 | 2463 | annotate_watchpoint (b->number); |
9dc5e2a9 | 2464 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2465 | ui_out_field_string |
2466 | (uiout, "reason", | |
2467 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 2468 | mention (b); |
f7545552 | 2469 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 2470 | ui_out_text (uiout, "\nOld value = "); |
fa4727a6 | 2471 | watchpoint_value_print (bs->old_val, stb->stream); |
8b93c638 | 2472 | ui_out_field_stream (uiout, "old", stb); |
8b93c638 JM |
2473 | ui_out_text (uiout, "\nNew value = "); |
2474 | } | |
2475 | else | |
2476 | { | |
4f8d1dc6 | 2477 | mention (b); |
9dc5e2a9 | 2478 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2479 | ui_out_field_string |
2480 | (uiout, "reason", | |
2481 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
f7545552 | 2482 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2483 | ui_out_text (uiout, "\nValue = "); |
2484 | } | |
fa4727a6 | 2485 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 2486 | ui_out_field_stream (uiout, "new", stb); |
8b93c638 | 2487 | ui_out_text (uiout, "\n"); |
f7545552 | 2488 | result = PRINT_UNKNOWN; |
e514a9d6 | 2489 | break; |
4ce44c66 | 2490 | |
e514a9d6 JM |
2491 | /* Fall through, we don't deal with these types of breakpoints |
2492 | here. */ | |
2493 | ||
11cf8741 | 2494 | case bp_finish: |
9dc5e2a9 | 2495 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2496 | ui_out_field_string |
2497 | (uiout, "reason", | |
2498 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
f7545552 | 2499 | result = PRINT_UNKNOWN; |
8b93c638 JM |
2500 | break; |
2501 | ||
e514a9d6 | 2502 | case bp_until: |
9dc5e2a9 | 2503 | if (ui_out_is_mi_like_p (uiout)) |
1fbc2a49 NR |
2504 | ui_out_field_string |
2505 | (uiout, "reason", | |
2506 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
f7545552 | 2507 | result = PRINT_UNKNOWN; |
8b93c638 JM |
2508 | break; |
2509 | ||
c2d11a7d | 2510 | case bp_none: |
e514a9d6 JM |
2511 | case bp_longjmp: |
2512 | case bp_longjmp_resume: | |
2513 | case bp_step_resume: | |
e514a9d6 JM |
2514 | case bp_watchpoint_scope: |
2515 | case bp_call_dummy: | |
1042e4c0 | 2516 | case bp_tracepoint: |
e514a9d6 | 2517 | default: |
f7545552 TT |
2518 | result = PRINT_UNKNOWN; |
2519 | break; | |
e514a9d6 | 2520 | } |
f7545552 TT |
2521 | |
2522 | do_cleanups (old_chain); | |
2523 | return result; | |
e514a9d6 JM |
2524 | } |
2525 | ||
2526 | /* Generic routine for printing messages indicating why we | |
2527 | stopped. The behavior of this function depends on the value | |
2528 | 'print_it' in the bpstat structure. Under some circumstances we | |
2529 | may decide not to print anything here and delegate the task to | |
2530 | normal_stop(). */ | |
2531 | ||
2532 | static enum print_stop_action | |
2533 | print_bp_stop_message (bpstat bs) | |
2534 | { | |
2535 | switch (bs->print_it) | |
2536 | { | |
2537 | case print_it_noop: | |
2538 | /* Nothing should be printed for this bpstat entry. */ | |
2539 | return PRINT_UNKNOWN; | |
2540 | break; | |
2541 | ||
2542 | case print_it_done: | |
2543 | /* We still want to print the frame, but we already printed the | |
2544 | relevant messages. */ | |
2545 | return PRINT_SRC_AND_LOC; | |
2546 | break; | |
2547 | ||
2548 | case print_it_normal: | |
4f8d1dc6 | 2549 | { |
89f9893c | 2550 | const struct bp_location *bl = bs->breakpoint_at; |
4f8d1dc6 VP |
2551 | struct breakpoint *b = bl ? bl->owner : NULL; |
2552 | ||
2553 | /* Normal case. Call the breakpoint's print_it method, or | |
2554 | print_it_typical. */ | |
2555 | /* FIXME: how breakpoint can ever be NULL here? */ | |
2556 | if (b != NULL && b->ops != NULL && b->ops->print_it != NULL) | |
2557 | return b->ops->print_it (b); | |
2558 | else | |
2559 | return print_it_typical (bs); | |
2560 | } | |
2561 | break; | |
3086aeae | 2562 | |
e514a9d6 | 2563 | default: |
8e65ff28 | 2564 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2565 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 2566 | break; |
c906108c | 2567 | } |
c906108c SS |
2568 | } |
2569 | ||
e514a9d6 JM |
2570 | /* Print a message indicating what happened. This is called from |
2571 | normal_stop(). The input to this routine is the head of the bpstat | |
2572 | list - a list of the eventpoints that caused this stop. This | |
2573 | routine calls the generic print routine for printing a message | |
2574 | about reasons for stopping. This will print (for example) the | |
2575 | "Breakpoint n," part of the output. The return value of this | |
2576 | routine is one of: | |
c906108c | 2577 | |
917317f4 JM |
2578 | PRINT_UNKNOWN: Means we printed nothing |
2579 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2580 | code to print the location. An example is |
2581 | "Breakpoint 1, " which should be followed by | |
2582 | the location. | |
917317f4 | 2583 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2584 | to also print the location part of the message. |
2585 | An example is the catch/throw messages, which | |
917317f4 JM |
2586 | don't require a location appended to the end. |
2587 | PRINT_NOTHING: We have done some printing and we don't need any | |
2588 | further info to be printed.*/ | |
c906108c | 2589 | |
917317f4 | 2590 | enum print_stop_action |
fba45db2 | 2591 | bpstat_print (bpstat bs) |
c906108c SS |
2592 | { |
2593 | int val; | |
c5aa993b | 2594 | |
c906108c | 2595 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2596 | (Currently all watchpoints go on the bpstat whether hit or not. |
2597 | That probably could (should) be changed, provided care is taken | |
c906108c | 2598 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2599 | for (; bs; bs = bs->next) |
2600 | { | |
2601 | val = print_bp_stop_message (bs); | |
2602 | if (val == PRINT_SRC_ONLY | |
2603 | || val == PRINT_SRC_AND_LOC | |
2604 | || val == PRINT_NOTHING) | |
2605 | return val; | |
2606 | } | |
c906108c | 2607 | |
e514a9d6 JM |
2608 | /* We reached the end of the chain, or we got a null BS to start |
2609 | with and nothing was printed. */ | |
917317f4 | 2610 | return PRINT_UNKNOWN; |
c906108c SS |
2611 | } |
2612 | ||
2613 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2614 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2615 | The argument is a "struct expression *" that has been cast to char * to | |
2616 | make it pass through catch_errors. */ | |
2617 | ||
2618 | static int | |
4efb68b1 | 2619 | breakpoint_cond_eval (void *exp) |
c906108c | 2620 | { |
278cd55f | 2621 | struct value *mark = value_mark (); |
c5aa993b | 2622 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2623 | value_free_to_mark (mark); |
2624 | return i; | |
2625 | } | |
2626 | ||
2627 | /* Allocate a new bpstat and chain it to the current one. */ | |
2628 | ||
2629 | static bpstat | |
89f9893c | 2630 | bpstat_alloc (const struct bp_location *bl, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
2631 | { |
2632 | bpstat bs; | |
2633 | ||
2634 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2635 | cbs->next = bs; | |
4f8d1dc6 | 2636 | bs->breakpoint_at = bl; |
c906108c SS |
2637 | /* If the condition is false, etc., don't do the commands. */ |
2638 | bs->commands = NULL; | |
2639 | bs->old_val = NULL; | |
2640 | bs->print_it = print_it_normal; | |
2641 | return bs; | |
2642 | } | |
2643 | \f | |
d983da9c DJ |
2644 | /* The target has stopped with waitstatus WS. Check if any hardware |
2645 | watchpoints have triggered, according to the target. */ | |
2646 | ||
2647 | int | |
2648 | watchpoints_triggered (struct target_waitstatus *ws) | |
2649 | { | |
d92524f1 | 2650 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
2651 | CORE_ADDR addr; |
2652 | struct breakpoint *b; | |
2653 | ||
2654 | if (!stopped_by_watchpoint) | |
2655 | { | |
2656 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
2657 | as not triggered. */ | |
2658 | ALL_BREAKPOINTS (b) | |
2659 | if (b->type == bp_hardware_watchpoint | |
2660 | || b->type == bp_read_watchpoint | |
2661 | || b->type == bp_access_watchpoint) | |
2662 | b->watchpoint_triggered = watch_triggered_no; | |
2663 | ||
2664 | return 0; | |
2665 | } | |
2666 | ||
2667 | if (!target_stopped_data_address (¤t_target, &addr)) | |
2668 | { | |
2669 | /* We were stopped by a watchpoint, but we don't know where. | |
2670 | Mark all watchpoints as unknown. */ | |
2671 | ALL_BREAKPOINTS (b) | |
2672 | if (b->type == bp_hardware_watchpoint | |
2673 | || b->type == bp_read_watchpoint | |
2674 | || b->type == bp_access_watchpoint) | |
2675 | b->watchpoint_triggered = watch_triggered_unknown; | |
2676 | ||
2677 | return stopped_by_watchpoint; | |
2678 | } | |
2679 | ||
2680 | /* The target could report the data address. Mark watchpoints | |
2681 | affected by this data address as triggered, and all others as not | |
2682 | triggered. */ | |
2683 | ||
2684 | ALL_BREAKPOINTS (b) | |
2685 | if (b->type == bp_hardware_watchpoint | |
2686 | || b->type == bp_read_watchpoint | |
2687 | || b->type == bp_access_watchpoint) | |
2688 | { | |
a5606eee | 2689 | struct bp_location *loc; |
d983da9c DJ |
2690 | struct value *v; |
2691 | ||
2692 | b->watchpoint_triggered = watch_triggered_no; | |
a5606eee VP |
2693 | for (loc = b->loc; loc; loc = loc->next) |
2694 | /* Exact match not required. Within range is | |
2695 | sufficient. */ | |
5009afc5 AS |
2696 | if (target_watchpoint_addr_within_range (¤t_target, |
2697 | addr, loc->address, | |
2698 | loc->length)) | |
a5606eee VP |
2699 | { |
2700 | b->watchpoint_triggered = watch_triggered_yes; | |
2701 | break; | |
2702 | } | |
d983da9c DJ |
2703 | } |
2704 | ||
2705 | return 1; | |
2706 | } | |
2707 | ||
c906108c SS |
2708 | /* Possible return values for watchpoint_check (this can't be an enum |
2709 | because of check_errors). */ | |
2710 | /* The watchpoint has been deleted. */ | |
2711 | #define WP_DELETED 1 | |
2712 | /* The value has changed. */ | |
2713 | #define WP_VALUE_CHANGED 2 | |
2714 | /* The value has not changed. */ | |
2715 | #define WP_VALUE_NOT_CHANGED 3 | |
2716 | ||
2717 | #define BP_TEMPFLAG 1 | |
2718 | #define BP_HARDWAREFLAG 2 | |
2719 | ||
2720 | /* Check watchpoint condition. */ | |
2721 | ||
2722 | static int | |
4efb68b1 | 2723 | watchpoint_check (void *p) |
c906108c SS |
2724 | { |
2725 | bpstat bs = (bpstat) p; | |
2726 | struct breakpoint *b; | |
2727 | struct frame_info *fr; | |
2728 | int within_current_scope; | |
2729 | ||
4f8d1dc6 | 2730 | b = bs->breakpoint_at->owner; |
c906108c SS |
2731 | |
2732 | if (b->exp_valid_block == NULL) | |
2733 | within_current_scope = 1; | |
2734 | else | |
2735 | { | |
2736 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2737 | any chance of handling watchpoints on local variables, we'll need |
2738 | the frame chain (so we can determine if we're in scope). */ | |
2739 | reinit_frame_cache (); | |
101dcfbe | 2740 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 2741 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
2742 | |
2743 | /* If we've gotten confused in the unwinder, we might have | |
2744 | returned a frame that can't describe this variable. */ | |
2745 | if (within_current_scope | |
7f0df278 DJ |
2746 | && (block_linkage_function (b->exp_valid_block) |
2747 | != get_frame_function (fr))) | |
69fbadd5 DJ |
2748 | within_current_scope = 0; |
2749 | ||
c12260ac CV |
2750 | /* in_function_epilogue_p() returns a non-zero value if we're still |
2751 | in the function but the stack frame has already been invalidated. | |
2752 | Since we can't rely on the values of local variables after the | |
2753 | stack has been destroyed, we are treating the watchpoint in that | |
a957e642 CV |
2754 | state as `not changed' without further checking. |
2755 | ||
2756 | vinschen/2003-09-04: The former implementation left out the case | |
2757 | that the watchpoint frame couldn't be found by frame_find_by_id() | |
2758 | because the current PC is currently in an epilogue. Calling | |
2759 | gdbarch_in_function_epilogue_p() also when fr == NULL fixes that. */ | |
fb14de7b UW |
2760 | if (!within_current_scope || fr == get_current_frame ()) |
2761 | { | |
2762 | struct frame_info *frame = get_current_frame (); | |
2763 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
2764 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
2765 | ||
2766 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) | |
2767 | return WP_VALUE_NOT_CHANGED; | |
2768 | } | |
a6fbcf2f | 2769 | if (fr && within_current_scope) |
c906108c SS |
2770 | /* If we end up stopping, the current frame will get selected |
2771 | in normal_stop. So this call to select_frame won't affect | |
2772 | the user. */ | |
0f7d239c | 2773 | select_frame (fr); |
c906108c | 2774 | } |
c5aa993b | 2775 | |
c906108c SS |
2776 | if (within_current_scope) |
2777 | { | |
2778 | /* We use value_{,free_to_}mark because it could be a | |
2779 | *long* time before we return to the command level and | |
c5aa993b JM |
2780 | call free_all_values. We can't call free_all_values because |
2781 | we might be in the middle of evaluating a function call. */ | |
c906108c | 2782 | |
278cd55f | 2783 | struct value *mark = value_mark (); |
fa4727a6 DJ |
2784 | struct value *new_val; |
2785 | ||
2786 | fetch_watchpoint_value (b->exp, &new_val, NULL, NULL); | |
2787 | if ((b->val != NULL) != (new_val != NULL) | |
2788 | || (b->val != NULL && !value_equal (b->val, new_val))) | |
c906108c | 2789 | { |
fa4727a6 DJ |
2790 | if (new_val != NULL) |
2791 | { | |
2792 | release_value (new_val); | |
2793 | value_free_to_mark (mark); | |
2794 | } | |
c906108c SS |
2795 | bs->old_val = b->val; |
2796 | b->val = new_val; | |
fa4727a6 | 2797 | b->val_valid = 1; |
c906108c SS |
2798 | /* We will stop here */ |
2799 | return WP_VALUE_CHANGED; | |
2800 | } | |
2801 | else | |
2802 | { | |
2803 | /* Nothing changed, don't do anything. */ | |
2804 | value_free_to_mark (mark); | |
2805 | /* We won't stop here */ | |
2806 | return WP_VALUE_NOT_CHANGED; | |
2807 | } | |
2808 | } | |
2809 | else | |
2810 | { | |
2811 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2812 | if we temporarily ignored the watchpoint, then when |
2813 | we reenter the block in which it is valid it contains | |
2814 | garbage (in the case of a function, it may have two | |
2815 | garbage values, one before and one after the prologue). | |
2816 | So we can't even detect the first assignment to it and | |
2817 | watch after that (since the garbage may or may not equal | |
2818 | the first value assigned). */ | |
4ce44c66 JM |
2819 | /* We print all the stop information in print_it_typical(), but |
2820 | in this case, by the time we call print_it_typical() this bp | |
2821 | will be deleted already. So we have no choice but print the | |
2822 | information here. */ | |
9dc5e2a9 | 2823 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2824 | ui_out_field_string |
2825 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 2826 | ui_out_text (uiout, "\nWatchpoint "); |
4f8d1dc6 | 2827 | ui_out_field_int (uiout, "wpnum", b->number); |
8b93c638 JM |
2828 | ui_out_text (uiout, " deleted because the program has left the block in\n\ |
2829 | which its expression is valid.\n"); | |
4ce44c66 | 2830 | |
c906108c | 2831 | if (b->related_breakpoint) |
b5de0fa7 EZ |
2832 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2833 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
2834 | |
2835 | return WP_DELETED; | |
2836 | } | |
2837 | } | |
2838 | ||
18a18393 VP |
2839 | /* Return true if it looks like target has stopped due to hitting |
2840 | breakpoint location BL. This function does not check if we | |
2841 | should stop, only if BL explains the stop. */ | |
2842 | static int | |
2843 | bpstat_check_location (const struct bp_location *bl, CORE_ADDR bp_addr) | |
2844 | { | |
2845 | struct breakpoint *b = bl->owner; | |
2846 | ||
2847 | if (b->type != bp_watchpoint | |
2848 | && b->type != bp_hardware_watchpoint | |
2849 | && b->type != bp_read_watchpoint | |
2850 | && b->type != bp_access_watchpoint | |
2851 | && b->type != bp_hardware_breakpoint | |
fe798b75 | 2852 | && b->type != bp_catchpoint) /* a non-watchpoint bp */ |
18a18393 VP |
2853 | { |
2854 | if (bl->address != bp_addr) /* address doesn't match */ | |
2855 | return 0; | |
2856 | if (overlay_debugging /* unmapped overlay section */ | |
2857 | && section_is_overlay (bl->section) | |
2858 | && !section_is_mapped (bl->section)) | |
2859 | return 0; | |
2860 | } | |
2861 | ||
2862 | /* Continuable hardware watchpoints are treated as non-existent if the | |
2863 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
2864 | some data address). Otherwise gdb won't stop on a break instruction | |
2865 | in the code (not from a breakpoint) when a hardware watchpoint has | |
2866 | been defined. Also skip watchpoints which we know did not trigger | |
2867 | (did not match the data address). */ | |
2868 | ||
2869 | if ((b->type == bp_hardware_watchpoint | |
2870 | || b->type == bp_read_watchpoint | |
2871 | || b->type == bp_access_watchpoint) | |
2872 | && b->watchpoint_triggered == watch_triggered_no) | |
2873 | return 0; | |
2874 | ||
2875 | if (b->type == bp_hardware_breakpoint) | |
2876 | { | |
2877 | if (bl->address != bp_addr) | |
2878 | return 0; | |
2879 | if (overlay_debugging /* unmapped overlay section */ | |
2880 | && section_is_overlay (bl->section) | |
2881 | && !section_is_mapped (bl->section)) | |
2882 | return 0; | |
2883 | } | |
ce78b96d | 2884 | |
ce78b96d JB |
2885 | if (b->type == bp_catchpoint) |
2886 | { | |
2887 | gdb_assert (b->ops != NULL && b->ops->breakpoint_hit != NULL); | |
2888 | if (!b->ops->breakpoint_hit (b)) | |
2889 | return 0; | |
2890 | } | |
2891 | ||
18a18393 VP |
2892 | return 1; |
2893 | } | |
2894 | ||
2895 | /* If BS refers to a watchpoint, determine if the watched values | |
2896 | has actually changed, and we should stop. If not, set BS->stop | |
2897 | to 0. */ | |
2898 | static void | |
2899 | bpstat_check_watchpoint (bpstat bs) | |
2900 | { | |
2901 | const struct bp_location *bl = bs->breakpoint_at; | |
2902 | struct breakpoint *b = bl->owner; | |
2903 | ||
2904 | if (b->type == bp_watchpoint | |
2905 | || b->type == bp_read_watchpoint | |
2906 | || b->type == bp_access_watchpoint | |
2907 | || b->type == bp_hardware_watchpoint) | |
2908 | { | |
2909 | CORE_ADDR addr; | |
2910 | struct value *v; | |
2911 | int must_check_value = 0; | |
2912 | ||
2913 | if (b->type == bp_watchpoint) | |
2914 | /* For a software watchpoint, we must always check the | |
2915 | watched value. */ | |
2916 | must_check_value = 1; | |
2917 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
2918 | /* We have a hardware watchpoint (read, write, or access) | |
2919 | and the target earlier reported an address watched by | |
2920 | this watchpoint. */ | |
2921 | must_check_value = 1; | |
2922 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
2923 | && b->type == bp_hardware_watchpoint) | |
2924 | /* We were stopped by a hardware watchpoint, but the target could | |
2925 | not report the data address. We must check the watchpoint's | |
2926 | value. Access and read watchpoints are out of luck; without | |
2927 | a data address, we can't figure it out. */ | |
2928 | must_check_value = 1; | |
2929 | ||
2930 | if (must_check_value) | |
2931 | { | |
2932 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
2933 | b->number); | |
2934 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2935 | int e = catch_errors (watchpoint_check, bs, message, | |
2936 | RETURN_MASK_ALL); | |
2937 | do_cleanups (cleanups); | |
2938 | switch (e) | |
2939 | { | |
2940 | case WP_DELETED: | |
2941 | /* We've already printed what needs to be printed. */ | |
2942 | bs->print_it = print_it_done; | |
2943 | /* Stop. */ | |
2944 | break; | |
2945 | case WP_VALUE_CHANGED: | |
2946 | if (b->type == bp_read_watchpoint) | |
2947 | { | |
2948 | /* Don't stop: read watchpoints shouldn't fire if | |
2949 | the value has changed. This is for targets | |
2950 | which cannot set read-only watchpoints. */ | |
2951 | bs->print_it = print_it_noop; | |
2952 | bs->stop = 0; | |
2953 | } | |
2954 | break; | |
2955 | case WP_VALUE_NOT_CHANGED: | |
2956 | if (b->type == bp_hardware_watchpoint | |
2957 | || b->type == bp_watchpoint) | |
2958 | { | |
2959 | /* Don't stop: write watchpoints shouldn't fire if | |
2960 | the value hasn't changed. */ | |
2961 | bs->print_it = print_it_noop; | |
2962 | bs->stop = 0; | |
2963 | } | |
2964 | /* Stop. */ | |
2965 | break; | |
2966 | default: | |
2967 | /* Can't happen. */ | |
2968 | case 0: | |
2969 | /* Error from catch_errors. */ | |
2970 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); | |
2971 | if (b->related_breakpoint) | |
2972 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
2973 | b->disposition = disp_del_at_next_stop; | |
2974 | /* We've already printed what needs to be printed. */ | |
2975 | bs->print_it = print_it_done; | |
2976 | break; | |
2977 | } | |
2978 | } | |
2979 | else /* must_check_value == 0 */ | |
2980 | { | |
2981 | /* This is a case where some watchpoint(s) triggered, but | |
2982 | not at the address of this watchpoint, or else no | |
2983 | watchpoint triggered after all. So don't print | |
2984 | anything for this watchpoint. */ | |
2985 | bs->print_it = print_it_noop; | |
2986 | bs->stop = 0; | |
2987 | } | |
2988 | } | |
2989 | } | |
2990 | ||
2991 | ||
2992 | /* Check conditions (condition proper, frame, thread and ignore count) | |
2993 | of breakpoint referred to by BS. If we should not stop for this | |
2994 | breakpoint, set BS->stop to 0. */ | |
2995 | static void | |
2996 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
2997 | { | |
2998 | int thread_id = pid_to_thread_id (ptid); | |
2999 | const struct bp_location *bl = bs->breakpoint_at; | |
3000 | struct breakpoint *b = bl->owner; | |
3001 | ||
3002 | if (frame_id_p (b->frame_id) | |
3003 | && !frame_id_eq (b->frame_id, get_frame_id (get_current_frame ()))) | |
3004 | bs->stop = 0; | |
3005 | else if (bs->stop) | |
3006 | { | |
3007 | int value_is_zero = 0; | |
3008 | ||
3009 | /* If this is a scope breakpoint, mark the associated | |
3010 | watchpoint as triggered so that we will handle the | |
3011 | out-of-scope event. We'll get to the watchpoint next | |
3012 | iteration. */ | |
3013 | if (b->type == bp_watchpoint_scope) | |
3014 | b->related_breakpoint->watchpoint_triggered = watch_triggered_yes; | |
3015 | ||
3016 | if (bl->cond && bl->owner->disposition != disp_del_at_next_stop) | |
3017 | { | |
c5bc3a77 DJ |
3018 | /* We use value_mark and value_free_to_mark because it could |
3019 | be a long time before we return to the command level and | |
3020 | call free_all_values. We can't call free_all_values | |
3021 | because we might be in the middle of evaluating a | |
3022 | function call. */ | |
3023 | struct value *mark = value_mark (); | |
3024 | ||
18a18393 VP |
3025 | /* Need to select the frame, with all that implies |
3026 | so that the conditions will have the right context. */ | |
3027 | select_frame (get_current_frame ()); | |
3028 | value_is_zero | |
3029 | = catch_errors (breakpoint_cond_eval, (bl->cond), | |
3030 | "Error in testing breakpoint condition:\n", | |
3031 | RETURN_MASK_ALL); | |
3032 | /* FIXME-someday, should give breakpoint # */ | |
c5bc3a77 | 3033 | value_free_to_mark (mark); |
18a18393 VP |
3034 | } |
3035 | if (bl->cond && value_is_zero) | |
3036 | { | |
3037 | bs->stop = 0; | |
3038 | } | |
3039 | else if (b->thread != -1 && b->thread != thread_id) | |
3040 | { | |
3041 | bs->stop = 0; | |
3042 | } | |
3043 | else if (b->ignore_count > 0) | |
3044 | { | |
3045 | b->ignore_count--; | |
3046 | annotate_ignore_count_change (); | |
3047 | bs->stop = 0; | |
3048 | /* Increase the hit count even though we don't | |
3049 | stop. */ | |
3050 | ++(b->hit_count); | |
3051 | } | |
3052 | } | |
3053 | } | |
3054 | ||
3055 | ||
9709f61c | 3056 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 3057 | BP_ADDR in thread PTID. |
c906108c | 3058 | |
d983da9c | 3059 | Determine whether we stopped at a breakpoint, etc, or whether we |
c906108c SS |
3060 | don't understand this stop. Result is a chain of bpstat's such that: |
3061 | ||
c5aa993b | 3062 | if we don't understand the stop, the result is a null pointer. |
c906108c | 3063 | |
c5aa993b | 3064 | if we understand why we stopped, the result is not null. |
c906108c | 3065 | |
c5aa993b JM |
3066 | Each element of the chain refers to a particular breakpoint or |
3067 | watchpoint at which we have stopped. (We may have stopped for | |
3068 | several reasons concurrently.) | |
c906108c | 3069 | |
c5aa993b JM |
3070 | Each element of the chain has valid next, breakpoint_at, |
3071 | commands, FIXME??? fields. */ | |
c906108c SS |
3072 | |
3073 | bpstat | |
d983da9c | 3074 | bpstat_stop_status (CORE_ADDR bp_addr, ptid_t ptid) |
c906108c | 3075 | { |
0d381245 | 3076 | struct breakpoint *b = NULL; |
89f9893c | 3077 | const struct bp_location *bl; |
20874c92 | 3078 | struct bp_location *loc; |
c906108c SS |
3079 | /* Root of the chain of bpstat's */ |
3080 | struct bpstats root_bs[1]; | |
3081 | /* Pointer to the last thing in the chain currently. */ | |
3082 | bpstat bs = root_bs; | |
20874c92 | 3083 | int ix; |
d832cb68 | 3084 | int need_remove_insert; |
c906108c | 3085 | |
0d381245 | 3086 | ALL_BP_LOCATIONS (bl) |
c5aa993b | 3087 | { |
0d381245 VP |
3088 | b = bl->owner; |
3089 | gdb_assert (b); | |
468d015d | 3090 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) |
c5aa993b JM |
3091 | continue; |
3092 | ||
a5606eee VP |
3093 | /* For hardware watchpoints, we look only at the first location. |
3094 | The watchpoint_check function will work on entire expression, | |
3095 | not the individual locations. For read watchopints, the | |
3096 | watchpoints_triggered function have checked all locations | |
3097 | alrea | |
3098 | */ | |
3099 | if (b->type == bp_hardware_watchpoint && bl != b->loc) | |
3100 | continue; | |
3101 | ||
18a18393 VP |
3102 | if (!bpstat_check_location (bl, bp_addr)) |
3103 | continue; | |
3104 | ||
c5aa993b JM |
3105 | /* Come here if it's a watchpoint, or if the break address matches */ |
3106 | ||
0d381245 | 3107 | bs = bpstat_alloc (bl, bs); /* Alloc a bpstat to explain stop */ |
c5aa993b | 3108 | |
18a18393 VP |
3109 | /* Assume we stop. Should we find watchpoint that is not actually |
3110 | triggered, or if condition of breakpoint is false, we'll reset | |
3111 | 'stop' to 0. */ | |
c5aa993b JM |
3112 | bs->stop = 1; |
3113 | bs->print = 1; | |
3114 | ||
18a18393 VP |
3115 | bpstat_check_watchpoint (bs); |
3116 | if (!bs->stop) | |
3117 | continue; | |
c5aa993b | 3118 | |
18a18393 VP |
3119 | if (b->type == bp_thread_event || b->type == bp_overlay_event) |
3120 | /* We do not stop for these. */ | |
c5aa993b JM |
3121 | bs->stop = 0; |
3122 | else | |
18a18393 VP |
3123 | bpstat_check_breakpoint_conditions (bs, ptid); |
3124 | ||
3125 | if (bs->stop) | |
c5aa993b | 3126 | { |
18a18393 | 3127 | ++(b->hit_count); |
d983da9c | 3128 | |
18a18393 VP |
3129 | /* We will stop here */ |
3130 | if (b->disposition == disp_disable) | |
c5aa993b | 3131 | { |
514f746b AR |
3132 | if (b->enable_state != bp_permanent) |
3133 | b->enable_state = bp_disabled; | |
b60e7edf | 3134 | update_global_location_list (0); |
c5aa993b | 3135 | } |
18a18393 VP |
3136 | if (b->silent) |
3137 | bs->print = 0; | |
3138 | bs->commands = b->commands; | |
059fb39f PM |
3139 | if (bs->commands |
3140 | && (strcmp ("silent", bs->commands->line) == 0 | |
3141 | || (xdb_commands && strcmp ("Q", bs->commands->line) == 0))) | |
c5aa993b | 3142 | { |
18a18393 VP |
3143 | bs->commands = bs->commands->next; |
3144 | bs->print = 0; | |
c5aa993b | 3145 | } |
18a18393 | 3146 | bs->commands = copy_command_lines (bs->commands); |
c5aa993b | 3147 | } |
18a18393 | 3148 | |
c5aa993b JM |
3149 | /* Print nothing for this entry if we dont stop or if we dont print. */ |
3150 | if (bs->stop == 0 || bs->print == 0) | |
3151 | bs->print_it = print_it_noop; | |
3152 | } | |
c906108c | 3153 | |
20874c92 VP |
3154 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) |
3155 | { | |
3156 | if (loc->address == bp_addr) | |
3157 | { | |
3158 | bs = bpstat_alloc (loc, bs); | |
3159 | /* For hits of moribund locations, we should just proceed. */ | |
3160 | bs->stop = 0; | |
3161 | bs->print = 0; | |
3162 | bs->print_it = print_it_noop; | |
3163 | } | |
3164 | } | |
3165 | ||
c906108c SS |
3166 | bs->next = NULL; /* Terminate the chain */ |
3167 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
3168 | ||
d983da9c DJ |
3169 | /* If we aren't stopping, the value of some hardware watchpoint may |
3170 | not have changed, but the intermediate memory locations we are | |
3171 | watching may have. Don't bother if we're stopping; this will get | |
3172 | done later. */ | |
3173 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3174 | if (bs->stop) | |
3175 | break; | |
3176 | ||
d832cb68 | 3177 | need_remove_insert = 0; |
d983da9c DJ |
3178 | if (bs == NULL) |
3179 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3180 | if (!bs->stop | |
20874c92 | 3181 | && bs->breakpoint_at->owner |
d983da9c DJ |
3182 | && (bs->breakpoint_at->owner->type == bp_hardware_watchpoint |
3183 | || bs->breakpoint_at->owner->type == bp_read_watchpoint | |
3184 | || bs->breakpoint_at->owner->type == bp_access_watchpoint)) | |
3185 | { | |
a5606eee VP |
3186 | /* remove/insert can invalidate bs->breakpoint_at, if this |
3187 | location is no longer used by the watchpoint. Prevent | |
3188 | further code from trying to use it. */ | |
3189 | bs->breakpoint_at = NULL; | |
d832cb68 | 3190 | need_remove_insert = 1; |
d983da9c DJ |
3191 | } |
3192 | ||
d832cb68 DD |
3193 | if (need_remove_insert) |
3194 | { | |
3195 | remove_breakpoints (); | |
3196 | insert_breakpoints (); | |
3197 | } | |
3198 | ||
d983da9c | 3199 | return root_bs->next; |
c906108c SS |
3200 | } |
3201 | \f | |
3202 | /* Tell what to do about this bpstat. */ | |
3203 | struct bpstat_what | |
fba45db2 | 3204 | bpstat_what (bpstat bs) |
c906108c SS |
3205 | { |
3206 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
3207 | enum class |
3208 | { | |
3209 | /* This bpstat element has no effect on the main_action. */ | |
3210 | no_effect = 0, | |
3211 | ||
3212 | /* There was a watchpoint, stop but don't print. */ | |
3213 | wp_silent, | |
c906108c | 3214 | |
c5aa993b JM |
3215 | /* There was a watchpoint, stop and print. */ |
3216 | wp_noisy, | |
c906108c | 3217 | |
c5aa993b JM |
3218 | /* There was a breakpoint but we're not stopping. */ |
3219 | bp_nostop, | |
c906108c | 3220 | |
c5aa993b JM |
3221 | /* There was a breakpoint, stop but don't print. */ |
3222 | bp_silent, | |
c906108c | 3223 | |
c5aa993b JM |
3224 | /* There was a breakpoint, stop and print. */ |
3225 | bp_noisy, | |
c906108c | 3226 | |
c5aa993b JM |
3227 | /* We hit the longjmp breakpoint. */ |
3228 | long_jump, | |
c906108c | 3229 | |
c5aa993b JM |
3230 | /* We hit the longjmp_resume breakpoint. */ |
3231 | long_resume, | |
c906108c | 3232 | |
c5aa993b JM |
3233 | /* We hit the step_resume breakpoint. */ |
3234 | step_resume, | |
c906108c | 3235 | |
c5aa993b JM |
3236 | /* We hit the shared library event breakpoint. */ |
3237 | shlib_event, | |
c906108c | 3238 | |
c5aa993b JM |
3239 | /* This is just used to count how many enums there are. */ |
3240 | class_last | |
c906108c SS |
3241 | }; |
3242 | ||
3243 | /* Here is the table which drives this routine. So that we can | |
3244 | format it pretty, we define some abbreviations for the | |
3245 | enum bpstat_what codes. */ | |
3246 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
3247 | #define ss BPSTAT_WHAT_STOP_SILENT | |
3248 | #define sn BPSTAT_WHAT_STOP_NOISY | |
3249 | #define sgl BPSTAT_WHAT_SINGLE | |
3250 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
3251 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
c906108c | 3252 | #define sr BPSTAT_WHAT_STEP_RESUME |
c906108c | 3253 | #define shl BPSTAT_WHAT_CHECK_SHLIBS |
c906108c SS |
3254 | |
3255 | /* "Can't happen." Might want to print an error message. | |
3256 | abort() is not out of the question, but chances are GDB is just | |
3257 | a bit confused, not unusable. */ | |
3258 | #define err BPSTAT_WHAT_STOP_NOISY | |
3259 | ||
3260 | /* Given an old action and a class, come up with a new action. */ | |
3261 | /* One interesting property of this table is that wp_silent is the same | |
3262 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
3263 | after stopping, the check for whether to step over a breakpoint | |
3264 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
3265 | reference to how we stopped. We retain separate wp_silent and |
3266 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
3267 | |
3268 | Another possibly interesting property of this table is that | |
3269 | there's a partial ordering, priority-like, of the actions. Once | |
3270 | you've decided that some action is appropriate, you'll never go | |
3271 | back and decide something of a lower priority is better. The | |
3272 | ordering is: | |
3273 | ||
d81191fc JB |
3274 | kc < clr sgl shl slr sn sr ss |
3275 | sgl < shl slr sn sr ss | |
3276 | slr < err shl sn sr ss | |
3277 | clr < err shl sn sr ss | |
3278 | ss < shl sn sr | |
3279 | sn < shl sr | |
3280 | shl < sr | |
4d5b2cd7 | 3281 | sr < |
c5aa993b | 3282 | |
43ff13b4 JM |
3283 | What I think this means is that we don't need a damned table |
3284 | here. If you just put the rows and columns in the right order, | |
3285 | it'd look awfully regular. We could simply walk the bpstat list | |
3286 | and choose the highest priority action we find, with a little | |
78b6a731 | 3287 | logic to handle the 'err' cases. */ |
c906108c SS |
3288 | |
3289 | /* step_resume entries: a step resume breakpoint overrides another | |
3290 | breakpoint of signal handling (see comment in wait_for_inferior | |
fcf70625 | 3291 | at where we set the step_resume breakpoint). */ |
c906108c SS |
3292 | |
3293 | static const enum bpstat_what_main_action | |
c5aa993b JM |
3294 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
3295 | { | |
3296 | /* old action */ | |
d81191fc | 3297 | /* kc ss sn sgl slr clr sr shl |
c5aa993b JM |
3298 | */ |
3299 | /*no_effect */ | |
d81191fc | 3300 | {kc, ss, sn, sgl, slr, clr, sr, shl}, |
c5aa993b | 3301 | /*wp_silent */ |
d81191fc | 3302 | {ss, ss, sn, ss, ss, ss, sr, shl}, |
c5aa993b | 3303 | /*wp_noisy */ |
d81191fc | 3304 | {sn, sn, sn, sn, sn, sn, sr, shl}, |
c5aa993b | 3305 | /*bp_nostop */ |
d81191fc | 3306 | {sgl, ss, sn, sgl, slr, slr, sr, shl}, |
c5aa993b | 3307 | /*bp_silent */ |
d81191fc | 3308 | {ss, ss, sn, ss, ss, ss, sr, shl}, |
c5aa993b | 3309 | /*bp_noisy */ |
d81191fc | 3310 | {sn, sn, sn, sn, sn, sn, sr, shl}, |
c5aa993b | 3311 | /*long_jump */ |
d81191fc | 3312 | {slr, ss, sn, slr, slr, err, sr, shl}, |
c5aa993b | 3313 | /*long_resume */ |
d81191fc | 3314 | {clr, ss, sn, err, err, err, sr, shl}, |
c5aa993b | 3315 | /*step_resume */ |
d81191fc | 3316 | {sr, sr, sr, sr, sr, sr, sr, sr}, |
c5aa993b | 3317 | /*shlib */ |
d81191fc | 3318 | {shl, shl, shl, shl, shl, shl, sr, shl} |
c5aa993b | 3319 | }; |
c906108c SS |
3320 | |
3321 | #undef kc | |
3322 | #undef ss | |
3323 | #undef sn | |
3324 | #undef sgl | |
3325 | #undef slr | |
3326 | #undef clr | |
c906108c SS |
3327 | #undef err |
3328 | #undef sr | |
3329 | #undef ts | |
3330 | #undef shl | |
c906108c SS |
3331 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; |
3332 | struct bpstat_what retval; | |
3333 | ||
3334 | retval.call_dummy = 0; | |
3335 | for (; bs != NULL; bs = bs->next) | |
3336 | { | |
3337 | enum class bs_class = no_effect; | |
3338 | if (bs->breakpoint_at == NULL) | |
3339 | /* I suspect this can happen if it was a momentary breakpoint | |
3340 | which has since been deleted. */ | |
3341 | continue; | |
20874c92 VP |
3342 | if (bs->breakpoint_at->owner == NULL) |
3343 | bs_class = bp_nostop; | |
3344 | else | |
4f8d1dc6 | 3345 | switch (bs->breakpoint_at->owner->type) |
c906108c SS |
3346 | { |
3347 | case bp_none: | |
3348 | continue; | |
3349 | ||
3350 | case bp_breakpoint: | |
3351 | case bp_hardware_breakpoint: | |
3352 | case bp_until: | |
3353 | case bp_finish: | |
3354 | if (bs->stop) | |
3355 | { | |
3356 | if (bs->print) | |
3357 | bs_class = bp_noisy; | |
3358 | else | |
3359 | bs_class = bp_silent; | |
3360 | } | |
3361 | else | |
3362 | bs_class = bp_nostop; | |
3363 | break; | |
3364 | case bp_watchpoint: | |
3365 | case bp_hardware_watchpoint: | |
3366 | case bp_read_watchpoint: | |
3367 | case bp_access_watchpoint: | |
3368 | if (bs->stop) | |
3369 | { | |
3370 | if (bs->print) | |
3371 | bs_class = wp_noisy; | |
3372 | else | |
3373 | bs_class = wp_silent; | |
3374 | } | |
3375 | else | |
53a5351d JM |
3376 | /* There was a watchpoint, but we're not stopping. |
3377 | This requires no further action. */ | |
c906108c SS |
3378 | bs_class = no_effect; |
3379 | break; | |
3380 | case bp_longjmp: | |
3381 | bs_class = long_jump; | |
3382 | break; | |
3383 | case bp_longjmp_resume: | |
3384 | bs_class = long_resume; | |
3385 | break; | |
3386 | case bp_step_resume: | |
3387 | if (bs->stop) | |
3388 | { | |
3389 | bs_class = step_resume; | |
3390 | } | |
3391 | else | |
3392 | /* It is for the wrong frame. */ | |
3393 | bs_class = bp_nostop; | |
3394 | break; | |
c906108c SS |
3395 | case bp_watchpoint_scope: |
3396 | bs_class = bp_nostop; | |
3397 | break; | |
c5aa993b JM |
3398 | case bp_shlib_event: |
3399 | bs_class = shlib_event; | |
3400 | break; | |
c4093a6a | 3401 | case bp_thread_event: |
1900040c | 3402 | case bp_overlay_event: |
c4093a6a JM |
3403 | bs_class = bp_nostop; |
3404 | break; | |
ce78b96d | 3405 | case bp_catchpoint: |
c5aa993b JM |
3406 | if (bs->stop) |
3407 | { | |
3408 | if (bs->print) | |
3409 | bs_class = bp_noisy; | |
3410 | else | |
3411 | bs_class = bp_silent; | |
3412 | } | |
3413 | else | |
53a5351d JM |
3414 | /* There was a catchpoint, but we're not stopping. |
3415 | This requires no further action. */ | |
c5aa993b JM |
3416 | bs_class = no_effect; |
3417 | break; | |
c906108c | 3418 | case bp_call_dummy: |
53a5351d JM |
3419 | /* Make sure the action is stop (silent or noisy), |
3420 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
3421 | bs_class = bp_silent; |
3422 | retval.call_dummy = 1; | |
3423 | break; | |
1042e4c0 SS |
3424 | case bp_tracepoint: |
3425 | /* Tracepoint hits should not be reported back to GDB, and | |
3426 | if one got through somehow, it should have been filtered | |
3427 | out already. */ | |
3428 | internal_error (__FILE__, __LINE__, | |
3429 | _("bpstat_what: bp_tracepoint encountered")); | |
3430 | break; | |
c906108c | 3431 | } |
c5aa993b | 3432 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
3433 | } |
3434 | retval.main_action = current_action; | |
3435 | return retval; | |
3436 | } | |
3437 | ||
3438 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
3439 | without hardware support). This isn't related to a specific bpstat, | |
3440 | just to things like whether watchpoints are set. */ | |
3441 | ||
c5aa993b | 3442 | int |
fba45db2 | 3443 | bpstat_should_step (void) |
c906108c SS |
3444 | { |
3445 | struct breakpoint *b; | |
3446 | ALL_BREAKPOINTS (b) | |
717a8278 | 3447 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 3448 | return 1; |
c906108c SS |
3449 | return 0; |
3450 | } | |
3451 | ||
c906108c | 3452 | \f |
c5aa993b | 3453 | |
0d381245 VP |
3454 | static void print_breakpoint_location (struct breakpoint *b, |
3455 | struct bp_location *loc, | |
3456 | char *wrap_indent, | |
3457 | struct ui_stream *stb) | |
3458 | { | |
3459 | if (b->source_file) | |
3460 | { | |
3461 | struct symbol *sym | |
3462 | = find_pc_sect_function (loc->address, loc->section); | |
3463 | if (sym) | |
3464 | { | |
3465 | ui_out_text (uiout, "in "); | |
3466 | ui_out_field_string (uiout, "func", | |
3467 | SYMBOL_PRINT_NAME (sym)); | |
3468 | ui_out_wrap_hint (uiout, wrap_indent); | |
3469 | ui_out_text (uiout, " at "); | |
3470 | } | |
3471 | ui_out_field_string (uiout, "file", b->source_file); | |
3472 | ui_out_text (uiout, ":"); | |
3473 | ||
3474 | if (ui_out_is_mi_like_p (uiout)) | |
3475 | { | |
3476 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
3477 | char *fullname = symtab_to_fullname (sal.symtab); | |
3478 | ||
3479 | if (fullname) | |
3480 | ui_out_field_string (uiout, "fullname", fullname); | |
3481 | } | |
3482 | ||
3483 | ui_out_field_int (uiout, "line", b->line_number); | |
3484 | } | |
3485 | else if (!b->loc) | |
3486 | { | |
3487 | ui_out_field_string (uiout, "pending", b->addr_string); | |
3488 | } | |
3489 | else | |
3490 | { | |
3491 | print_address_symbolic (loc->address, stb->stream, demangle, ""); | |
3492 | ui_out_field_stream (uiout, "at", stb); | |
3493 | } | |
3494 | } | |
3495 | ||
c4093a6a | 3496 | /* Print B to gdb_stdout. */ |
c906108c | 3497 | static void |
0d381245 VP |
3498 | print_one_breakpoint_location (struct breakpoint *b, |
3499 | struct bp_location *loc, | |
3500 | int loc_number, | |
3501 | CORE_ADDR *last_addr) | |
c906108c | 3502 | { |
52f0bd74 AC |
3503 | struct command_line *l; |
3504 | struct symbol *sym; | |
c4093a6a JM |
3505 | struct ep_type_description |
3506 | { | |
3507 | enum bptype type; | |
3508 | char *description; | |
3509 | }; | |
3510 | static struct ep_type_description bptypes[] = | |
c906108c | 3511 | { |
c5aa993b JM |
3512 | {bp_none, "?deleted?"}, |
3513 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3514 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3515 | {bp_until, "until"}, |
3516 | {bp_finish, "finish"}, | |
3517 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3518 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3519 | {bp_read_watchpoint, "read watchpoint"}, |
3520 | {bp_access_watchpoint, "acc watchpoint"}, | |
3521 | {bp_longjmp, "longjmp"}, | |
3522 | {bp_longjmp_resume, "longjmp resume"}, | |
3523 | {bp_step_resume, "step resume"}, | |
c5aa993b JM |
3524 | {bp_watchpoint_scope, "watchpoint scope"}, |
3525 | {bp_call_dummy, "call dummy"}, | |
3526 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3527 | {bp_thread_event, "thread events"}, |
1900040c | 3528 | {bp_overlay_event, "overlay events"}, |
ce78b96d | 3529 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 3530 | {bp_tracepoint, "tracepoint"}, |
c5aa993b | 3531 | }; |
c4093a6a | 3532 | |
c2c6d25f | 3533 | static char bpenables[] = "nynny"; |
c906108c | 3534 | char wrap_indent[80]; |
8b93c638 JM |
3535 | struct ui_stream *stb = ui_out_stream_new (uiout); |
3536 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 3537 | struct cleanup *bkpt_chain; |
c906108c | 3538 | |
0d381245 VP |
3539 | int header_of_multiple = 0; |
3540 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
3541 | struct value_print_options opts; |
3542 | ||
3543 | get_user_print_options (&opts); | |
0d381245 VP |
3544 | |
3545 | gdb_assert (!loc || loc_number != 0); | |
3546 | /* See comment in print_one_breakpoint concerning | |
3547 | treatment of breakpoints with single disabled | |
3548 | location. */ | |
3549 | if (loc == NULL | |
3550 | && (b->loc != NULL | |
3551 | && (b->loc->next != NULL || !b->loc->enabled))) | |
3552 | header_of_multiple = 1; | |
3553 | if (loc == NULL) | |
3554 | loc = b->loc; | |
3555 | ||
c4093a6a | 3556 | annotate_record (); |
3b31d625 | 3557 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
3558 | |
3559 | /* 1 */ | |
3560 | annotate_field (0); | |
0d381245 VP |
3561 | if (part_of_multiple) |
3562 | { | |
3563 | char *formatted; | |
0c6773c1 | 3564 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
3565 | ui_out_field_string (uiout, "number", formatted); |
3566 | xfree (formatted); | |
3567 | } | |
3568 | else | |
3569 | { | |
3570 | ui_out_field_int (uiout, "number", b->number); | |
3571 | } | |
c4093a6a JM |
3572 | |
3573 | /* 2 */ | |
3574 | annotate_field (1); | |
0d381245 VP |
3575 | if (part_of_multiple) |
3576 | ui_out_field_skip (uiout, "type"); | |
3577 | else | |
3578 | { | |
3579 | if (((int) b->type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3580 | || ((int) b->type != bptypes[(int) b->type].type)) | |
3581 | internal_error (__FILE__, __LINE__, | |
3582 | _("bptypes table does not describe type #%d."), | |
3583 | (int) b->type); | |
3584 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); | |
3585 | } | |
c4093a6a JM |
3586 | |
3587 | /* 3 */ | |
3588 | annotate_field (2); | |
0d381245 VP |
3589 | if (part_of_multiple) |
3590 | ui_out_field_skip (uiout, "disp"); | |
3591 | else | |
2cec12e5 | 3592 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 3593 | |
c4093a6a JM |
3594 | |
3595 | /* 4 */ | |
3596 | annotate_field (3); | |
0d381245 | 3597 | if (part_of_multiple) |
54e52265 | 3598 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 3599 | else |
54e52265 VP |
3600 | ui_out_field_fmt (uiout, "enabled", "%c", |
3601 | bpenables[(int) b->enable_state]); | |
3602 | ui_out_spaces (uiout, 2); | |
0d381245 | 3603 | |
c4093a6a JM |
3604 | |
3605 | /* 5 and 6 */ | |
3606 | strcpy (wrap_indent, " "); | |
79a45b7d | 3607 | if (opts.addressprint) |
75ac9d7b | 3608 | { |
17a912b6 | 3609 | if (gdbarch_addr_bit (current_gdbarch) <= 32) |
75ac9d7b MS |
3610 | strcat (wrap_indent, " "); |
3611 | else | |
3612 | strcat (wrap_indent, " "); | |
3613 | } | |
c906108c | 3614 | |
3086aeae | 3615 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 VP |
3616 | { |
3617 | /* Although the print_one can possibly print | |
3618 | all locations, calling it here is not likely | |
3619 | to get any nice result. So, make sure there's | |
3620 | just one location. */ | |
3621 | gdb_assert (b->loc == NULL || b->loc->next == NULL); | |
3622 | b->ops->print_one (b, last_addr); | |
3623 | } | |
3086aeae DJ |
3624 | else |
3625 | switch (b->type) | |
3626 | { | |
3627 | case bp_none: | |
3628 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 3629 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 3630 | break; |
c906108c | 3631 | |
3086aeae DJ |
3632 | case bp_watchpoint: |
3633 | case bp_hardware_watchpoint: | |
3634 | case bp_read_watchpoint: | |
3635 | case bp_access_watchpoint: | |
3636 | /* Field 4, the address, is omitted (which makes the columns | |
3637 | not line up too nicely with the headers, but the effect | |
3638 | is relatively readable). */ | |
79a45b7d | 3639 | if (opts.addressprint) |
3086aeae DJ |
3640 | ui_out_field_skip (uiout, "addr"); |
3641 | annotate_field (5); | |
fa8a61dc | 3642 | ui_out_field_string (uiout, "what", b->exp_string); |
3086aeae DJ |
3643 | break; |
3644 | ||
3086aeae DJ |
3645 | case bp_breakpoint: |
3646 | case bp_hardware_breakpoint: | |
3647 | case bp_until: | |
3648 | case bp_finish: | |
3649 | case bp_longjmp: | |
3650 | case bp_longjmp_resume: | |
3651 | case bp_step_resume: | |
3086aeae DJ |
3652 | case bp_watchpoint_scope: |
3653 | case bp_call_dummy: | |
3654 | case bp_shlib_event: | |
3655 | case bp_thread_event: | |
3656 | case bp_overlay_event: | |
1042e4c0 | 3657 | case bp_tracepoint: |
79a45b7d | 3658 | if (opts.addressprint) |
3086aeae DJ |
3659 | { |
3660 | annotate_field (4); | |
54e52265 | 3661 | if (header_of_multiple) |
0d381245 | 3662 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 3663 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 3664 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 3665 | else |
0d381245 | 3666 | ui_out_field_core_addr (uiout, "addr", loc->address); |
3086aeae DJ |
3667 | } |
3668 | annotate_field (5); | |
0d381245 VP |
3669 | if (!header_of_multiple) |
3670 | print_breakpoint_location (b, loc, wrap_indent, stb); | |
3671 | if (b->loc) | |
3672 | *last_addr = b->loc->address; | |
3086aeae DJ |
3673 | break; |
3674 | } | |
c906108c | 3675 | |
4a306c9a | 3676 | if (!part_of_multiple) |
c4093a6a | 3677 | { |
4a306c9a JB |
3678 | if (b->thread != -1) |
3679 | { | |
3680 | /* FIXME: This seems to be redundant and lost here; see the | |
3681 | "stop only in" line a little further down. */ | |
3682 | ui_out_text (uiout, " thread "); | |
3683 | ui_out_field_int (uiout, "thread", b->thread); | |
3684 | } | |
3685 | else if (b->task != 0) | |
3686 | { | |
3687 | ui_out_text (uiout, " task "); | |
3688 | ui_out_field_int (uiout, "task", b->task); | |
3689 | } | |
c4093a6a JM |
3690 | } |
3691 | ||
8b93c638 | 3692 | ui_out_text (uiout, "\n"); |
c4093a6a | 3693 | |
0d381245 | 3694 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
3695 | { |
3696 | annotate_field (6); | |
8b93c638 | 3697 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
3698 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
3699 | the frame ID. */ | |
d0a55772 | 3700 | ui_out_field_core_addr (uiout, "frame", b->frame_id.stack_addr); |
8b93c638 | 3701 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
3702 | } |
3703 | ||
0d381245 | 3704 | if (!part_of_multiple && b->cond_string && !ada_exception_catchpoint_p (b)) |
c4093a6a | 3705 | { |
f7f9143b JB |
3706 | /* We do not print the condition for Ada exception catchpoints |
3707 | because the condition is an internal implementation detail | |
3708 | that we do not want to expose to the user. */ | |
c4093a6a | 3709 | annotate_field (7); |
1042e4c0 SS |
3710 | if (b->type == bp_tracepoint) |
3711 | ui_out_text (uiout, "\ttrace only if "); | |
3712 | else | |
3713 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 JJ |
3714 | ui_out_field_string (uiout, "cond", b->cond_string); |
3715 | ui_out_text (uiout, "\n"); | |
3716 | } | |
3717 | ||
0d381245 | 3718 | if (!part_of_multiple && b->thread != -1) |
c4093a6a JM |
3719 | { |
3720 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3721 | ui_out_text (uiout, "\tstop only in thread "); |
3722 | ui_out_field_int (uiout, "thread", b->thread); | |
3723 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3724 | } |
3725 | ||
63c715c6 | 3726 | if (!part_of_multiple && b->hit_count) |
c4093a6a JM |
3727 | { |
3728 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3729 | if (ep_is_catchpoint (b)) |
3730 | ui_out_text (uiout, "\tcatchpoint"); | |
3731 | else | |
3732 | ui_out_text (uiout, "\tbreakpoint"); | |
3733 | ui_out_text (uiout, " already hit "); | |
3734 | ui_out_field_int (uiout, "times", b->hit_count); | |
3735 | if (b->hit_count == 1) | |
3736 | ui_out_text (uiout, " time\n"); | |
3737 | else | |
3738 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
3739 | } |
3740 | ||
fb40c209 AC |
3741 | /* Output the count also if it is zero, but only if this is |
3742 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 3743 | if (ui_out_is_mi_like_p (uiout)) |
63c715c6 | 3744 | if (!part_of_multiple && b->hit_count == 0) |
fb40c209 | 3745 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 3746 | |
0d381245 | 3747 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
3748 | { |
3749 | annotate_field (8); | |
8b93c638 JM |
3750 | ui_out_text (uiout, "\tignore next "); |
3751 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3752 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 3753 | } |
059fb39f PM |
3754 | |
3755 | l = b->commands; | |
3756 | if (!part_of_multiple && l) | |
c4093a6a | 3757 | { |
3b31d625 EZ |
3758 | struct cleanup *script_chain; |
3759 | ||
c4093a6a | 3760 | annotate_field (9); |
3b31d625 | 3761 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 3762 | print_command_lines (uiout, l, 4); |
3b31d625 | 3763 | do_cleanups (script_chain); |
c4093a6a | 3764 | } |
d24317b4 | 3765 | |
1042e4c0 SS |
3766 | if (!part_of_multiple && b->pass_count) |
3767 | { | |
3768 | annotate_field (10); | |
3769 | ui_out_text (uiout, "\tpass count "); | |
3770 | ui_out_field_int (uiout, "pass", b->pass_count); | |
3771 | ui_out_text (uiout, " \n"); | |
3772 | } | |
3773 | ||
3774 | if (!part_of_multiple && b->step_count) | |
3775 | { | |
3776 | annotate_field (11); | |
3777 | ui_out_text (uiout, "\tstep count "); | |
3778 | ui_out_field_int (uiout, "step", b->step_count); | |
3779 | ui_out_text (uiout, " \n"); | |
3780 | } | |
3781 | ||
3782 | if (!part_of_multiple && b->actions) | |
3783 | { | |
3784 | struct action_line *action; | |
3785 | annotate_field (12); | |
3786 | for (action = b->actions; action; action = action->next) | |
3787 | { | |
3788 | ui_out_text (uiout, " A\t"); | |
3789 | ui_out_text (uiout, action->action); | |
3790 | ui_out_text (uiout, "\n"); | |
3791 | } | |
3792 | } | |
3793 | ||
d24317b4 VP |
3794 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
3795 | { | |
3796 | if (b->addr_string) | |
3797 | ui_out_field_string (uiout, "original-location", b->addr_string); | |
3798 | else if (b->exp_string) | |
3799 | ui_out_field_string (uiout, "original-location", b->exp_string); | |
3800 | } | |
3801 | ||
3b31d625 | 3802 | do_cleanups (bkpt_chain); |
8b93c638 | 3803 | do_cleanups (old_chain); |
c4093a6a | 3804 | } |
c5aa993b | 3805 | |
0d381245 VP |
3806 | static void |
3807 | print_one_breakpoint (struct breakpoint *b, | |
3808 | CORE_ADDR *last_addr) | |
3809 | { | |
3810 | print_one_breakpoint_location (b, NULL, 0, last_addr); | |
3811 | ||
3812 | /* If this breakpoint has custom print function, | |
3813 | it's already printed. Otherwise, print individual | |
3814 | locations, if any. */ | |
3815 | if (b->ops == NULL || b->ops->print_one == NULL) | |
3816 | { | |
3817 | /* If breakpoint has a single location that is | |
3818 | disabled, we print it as if it had | |
3819 | several locations, since otherwise it's hard to | |
3820 | represent "breakpoint enabled, location disabled" | |
a5606eee VP |
3821 | situation. |
3822 | Note that while hardware watchpoints have | |
3823 | several locations internally, that's no a property | |
3824 | exposed to user. */ | |
0d381245 | 3825 | if (b->loc |
a5606eee | 3826 | && !is_hardware_watchpoint (b) |
0d381245 | 3827 | && (b->loc->next || !b->loc->enabled) |
a5606eee | 3828 | && !ui_out_is_mi_like_p (uiout)) |
0d381245 VP |
3829 | { |
3830 | struct bp_location *loc; | |
3831 | int n = 1; | |
3832 | for (loc = b->loc; loc; loc = loc->next, ++n) | |
3833 | print_one_breakpoint_location (b, loc, n, last_addr); | |
3834 | } | |
3835 | } | |
3836 | } | |
3837 | ||
3838 | ||
c4093a6a JM |
3839 | struct captured_breakpoint_query_args |
3840 | { | |
3841 | int bnum; | |
3842 | }; | |
c5aa993b | 3843 | |
c4093a6a | 3844 | static int |
2b65245e | 3845 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
3846 | { |
3847 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 3848 | struct breakpoint *b; |
c4093a6a JM |
3849 | CORE_ADDR dummy_addr = 0; |
3850 | ALL_BREAKPOINTS (b) | |
3851 | { | |
3852 | if (args->bnum == b->number) | |
c5aa993b | 3853 | { |
c4093a6a JM |
3854 | print_one_breakpoint (b, &dummy_addr); |
3855 | return GDB_RC_OK; | |
c5aa993b | 3856 | } |
c4093a6a JM |
3857 | } |
3858 | return GDB_RC_NONE; | |
3859 | } | |
c5aa993b | 3860 | |
c4093a6a | 3861 | enum gdb_rc |
ce43223b | 3862 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, char **error_message) |
c4093a6a JM |
3863 | { |
3864 | struct captured_breakpoint_query_args args; | |
3865 | args.bnum = bnum; | |
3866 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3867 | an error. */ | |
b0b13bb4 DJ |
3868 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
3869 | error_message, RETURN_MASK_ALL) < 0) | |
3870 | return GDB_RC_FAIL; | |
3871 | else | |
3872 | return GDB_RC_OK; | |
c4093a6a | 3873 | } |
c5aa993b | 3874 | |
7f3b0473 AC |
3875 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
3876 | catchpoints, et.al.). */ | |
3877 | ||
3878 | static int | |
3879 | user_settable_breakpoint (const struct breakpoint *b) | |
3880 | { | |
3881 | return (b->type == bp_breakpoint | |
ce78b96d | 3882 | || b->type == bp_catchpoint |
7f3b0473 | 3883 | || b->type == bp_hardware_breakpoint |
1042e4c0 | 3884 | || b->type == bp_tracepoint |
7f3b0473 AC |
3885 | || b->type == bp_watchpoint |
3886 | || b->type == bp_read_watchpoint | |
3887 | || b->type == bp_access_watchpoint | |
3888 | || b->type == bp_hardware_watchpoint); | |
3889 | } | |
3890 | ||
3891 | /* Print information on user settable breakpoint (watchpoint, etc) | |
3892 | number BNUM. If BNUM is -1 print all user settable breakpoints. | |
3893 | If ALLFLAG is non-zero, include non- user settable breakpoints. */ | |
c906108c | 3894 | |
c4093a6a | 3895 | static void |
fba45db2 | 3896 | breakpoint_1 (int bnum, int allflag) |
c4093a6a | 3897 | { |
52f0bd74 | 3898 | struct breakpoint *b; |
c4093a6a | 3899 | CORE_ADDR last_addr = (CORE_ADDR) -1; |
7f3b0473 | 3900 | int nr_printable_breakpoints; |
3b31d625 | 3901 | struct cleanup *bkpttbl_chain; |
79a45b7d | 3902 | struct value_print_options opts; |
c4093a6a | 3903 | |
79a45b7d TT |
3904 | get_user_print_options (&opts); |
3905 | ||
7f3b0473 AC |
3906 | /* Compute the number of rows in the table. */ |
3907 | nr_printable_breakpoints = 0; | |
3908 | ALL_BREAKPOINTS (b) | |
3909 | if (bnum == -1 | |
3910 | || bnum == b->number) | |
3911 | { | |
3912 | if (allflag || user_settable_breakpoint (b)) | |
3913 | nr_printable_breakpoints++; | |
3914 | } | |
3915 | ||
79a45b7d | 3916 | if (opts.addressprint) |
3b31d625 EZ |
3917 | bkpttbl_chain |
3918 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
3919 | "BreakpointTable"); | |
8b93c638 | 3920 | else |
3b31d625 EZ |
3921 | bkpttbl_chain |
3922 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
3923 | "BreakpointTable"); | |
8b93c638 | 3924 | |
7f3b0473 | 3925 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
3926 | annotate_breakpoints_headers (); |
3927 | if (nr_printable_breakpoints > 0) | |
3928 | annotate_field (0); | |
0d381245 | 3929 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
3930 | if (nr_printable_breakpoints > 0) |
3931 | annotate_field (1); | |
3932 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
3933 | if (nr_printable_breakpoints > 0) | |
3934 | annotate_field (2); | |
3935 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
3936 | if (nr_printable_breakpoints > 0) | |
3937 | annotate_field (3); | |
54e52265 | 3938 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 3939 | if (opts.addressprint) |
7f3b0473 | 3940 | { |
d7faa9e7 AC |
3941 | if (nr_printable_breakpoints > 0) |
3942 | annotate_field (4); | |
17a912b6 | 3943 | if (gdbarch_addr_bit (current_gdbarch) <= 32) |
b25959ec | 3944 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3945 | else |
b25959ec | 3946 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3947 | } |
d7faa9e7 AC |
3948 | if (nr_printable_breakpoints > 0) |
3949 | annotate_field (5); | |
3950 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
3951 | ui_out_table_body (uiout); | |
3952 | if (nr_printable_breakpoints > 0) | |
3953 | annotate_breakpoints_table (); | |
7f3b0473 | 3954 | |
c4093a6a JM |
3955 | ALL_BREAKPOINTS (b) |
3956 | if (bnum == -1 | |
3957 | || bnum == b->number) | |
3958 | { | |
3959 | /* We only print out user settable breakpoints unless the | |
3960 | allflag is set. */ | |
7f3b0473 AC |
3961 | if (allflag || user_settable_breakpoint (b)) |
3962 | print_one_breakpoint (b, &last_addr); | |
c4093a6a JM |
3963 | } |
3964 | ||
3b31d625 | 3965 | do_cleanups (bkpttbl_chain); |
698384cd | 3966 | |
7f3b0473 | 3967 | if (nr_printable_breakpoints == 0) |
c906108c | 3968 | { |
8b93c638 JM |
3969 | if (bnum == -1) |
3970 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
3971 | else | |
3972 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
3973 | bnum); | |
c906108c SS |
3974 | } |
3975 | else | |
c4093a6a JM |
3976 | { |
3977 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
3978 | that a comparison of an unsigned with -1 is always false. */ | |
d1aa2f50 | 3979 | if (last_addr != (CORE_ADDR) -1 && !server_command) |
8b9b9e1a | 3980 | set_next_address (current_gdbarch, last_addr); |
c4093a6a | 3981 | } |
c906108c | 3982 | |
c4093a6a JM |
3983 | /* FIXME? Should this be moved up so that it is only called when |
3984 | there have been breakpoints? */ | |
c906108c SS |
3985 | annotate_breakpoints_table_end (); |
3986 | } | |
3987 | ||
c906108c | 3988 | static void |
fba45db2 | 3989 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
3990 | { |
3991 | int bnum = -1; | |
3992 | ||
3993 | if (bnum_exp) | |
bb518678 | 3994 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3995 | |
3996 | breakpoint_1 (bnum, 0); | |
3997 | } | |
3998 | ||
7a292a7a | 3999 | static void |
fba45db2 | 4000 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
4001 | { |
4002 | int bnum = -1; | |
4003 | ||
4004 | if (bnum_exp) | |
bb518678 | 4005 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
4006 | |
4007 | breakpoint_1 (bnum, 1); | |
4008 | } | |
4009 | ||
0d381245 | 4010 | static int |
714835d5 UW |
4011 | breakpoint_has_pc (struct breakpoint *b, |
4012 | CORE_ADDR pc, struct obj_section *section) | |
0d381245 VP |
4013 | { |
4014 | struct bp_location *bl = b->loc; | |
4015 | for (; bl; bl = bl->next) | |
4016 | { | |
4017 | if (bl->address == pc | |
4018 | && (!overlay_debugging || bl->section == section)) | |
4019 | return 1; | |
4020 | } | |
4021 | return 0; | |
4022 | } | |
4023 | ||
c906108c SS |
4024 | /* Print a message describing any breakpoints set at PC. */ |
4025 | ||
4026 | static void | |
714835d5 UW |
4027 | describe_other_breakpoints (CORE_ADDR pc, struct obj_section *section, |
4028 | int thread) | |
c906108c | 4029 | { |
52f0bd74 AC |
4030 | int others = 0; |
4031 | struct breakpoint *b; | |
c906108c SS |
4032 | |
4033 | ALL_BREAKPOINTS (b) | |
0d381245 | 4034 | others += breakpoint_has_pc (b, pc, section); |
c906108c SS |
4035 | if (others > 0) |
4036 | { | |
a3f17187 AC |
4037 | if (others == 1) |
4038 | printf_filtered (_("Note: breakpoint ")); | |
4039 | else /* if (others == ???) */ | |
4040 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 4041 | ALL_BREAKPOINTS (b) |
0d381245 VP |
4042 | if (breakpoint_has_pc (b, pc, section)) |
4043 | { | |
4044 | others--; | |
4045 | printf_filtered ("%d", b->number); | |
4046 | if (b->thread == -1 && thread != -1) | |
4047 | printf_filtered (" (all threads)"); | |
4048 | else if (b->thread != -1) | |
4049 | printf_filtered (" (thread %d)", b->thread); | |
4050 | printf_filtered ("%s%s ", | |
059fb39f PM |
4051 | ((b->enable_state == bp_disabled |
4052 | || b->enable_state == bp_call_disabled) | |
0d381245 VP |
4053 | ? " (disabled)" |
4054 | : b->enable_state == bp_permanent | |
4055 | ? " (permanent)" | |
4056 | : ""), | |
4057 | (others > 1) ? "," | |
4058 | : ((others == 1) ? " and" : "")); | |
4059 | } | |
a3f17187 | 4060 | printf_filtered (_("also set at pc ")); |
ed49a04f | 4061 | fputs_filtered (paddress (pc), gdb_stdout); |
c906108c SS |
4062 | printf_filtered (".\n"); |
4063 | } | |
4064 | } | |
4065 | \f | |
4066 | /* Set the default place to put a breakpoint | |
4067 | for the `break' command with no arguments. */ | |
4068 | ||
4069 | void | |
fba45db2 KB |
4070 | set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, |
4071 | int line) | |
c906108c SS |
4072 | { |
4073 | default_breakpoint_valid = valid; | |
4074 | default_breakpoint_address = addr; | |
4075 | default_breakpoint_symtab = symtab; | |
4076 | default_breakpoint_line = line; | |
4077 | } | |
4078 | ||
e4f237da KB |
4079 | /* Return true iff it is meaningful to use the address member of |
4080 | BPT. For some breakpoint types, the address member is irrelevant | |
4081 | and it makes no sense to attempt to compare it to other addresses | |
4082 | (or use it for any other purpose either). | |
4083 | ||
4084 | More specifically, each of the following breakpoint types will always | |
4085 | have a zero valued address and we don't want check_duplicates() to mark | |
4086 | breakpoints of any of these types to be a duplicate of an actual | |
4087 | breakpoint at address zero: | |
4088 | ||
4089 | bp_watchpoint | |
4090 | bp_hardware_watchpoint | |
4091 | bp_read_watchpoint | |
4092 | bp_access_watchpoint | |
fe798b75 | 4093 | bp_catchpoint */ |
e4f237da KB |
4094 | |
4095 | static int | |
4096 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
4097 | { | |
4098 | enum bptype type = bpt->type; | |
4099 | ||
4100 | return (type != bp_watchpoint | |
4101 | && type != bp_hardware_watchpoint | |
4102 | && type != bp_read_watchpoint | |
4103 | && type != bp_access_watchpoint | |
fe798b75 | 4104 | && type != bp_catchpoint); |
e4f237da KB |
4105 | } |
4106 | ||
9f60f21b | 4107 | /* Rescan breakpoints at the same address and section as BPT, |
c906108c | 4108 | marking the first one as "first" and any others as "duplicates". |
c2c6d25f | 4109 | This is so that the bpt instruction is only inserted once. |
9f60f21b JB |
4110 | If we have a permanent breakpoint at the same place as BPT, make |
4111 | that one the official one, and the rest as duplicates. */ | |
c906108c SS |
4112 | |
4113 | static void | |
714835d5 | 4114 | check_duplicates_for (CORE_ADDR address, struct obj_section *section) |
c906108c | 4115 | { |
075f6582 | 4116 | struct bp_location *b; |
52f0bd74 | 4117 | int count = 0; |
075f6582 | 4118 | struct bp_location *perm_bp = 0; |
c906108c | 4119 | |
075f6582 DJ |
4120 | ALL_BP_LOCATIONS (b) |
4121 | if (b->owner->enable_state != bp_disabled | |
075f6582 | 4122 | && b->owner->enable_state != bp_call_disabled |
0d381245 VP |
4123 | && b->enabled |
4124 | && !b->shlib_disabled | |
075f6582 DJ |
4125 | && b->address == address /* address / overlay match */ |
4126 | && (!overlay_debugging || b->section == section) | |
4127 | && breakpoint_address_is_meaningful (b->owner)) | |
c5aa993b | 4128 | { |
c2c6d25f | 4129 | /* Have we found a permanent breakpoint? */ |
075f6582 | 4130 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
4131 | { |
4132 | perm_bp = b; | |
4133 | break; | |
4134 | } | |
4135 | ||
c5aa993b | 4136 | count++; |
075f6582 | 4137 | b->duplicate = count > 1; |
c5aa993b | 4138 | } |
c2c6d25f JM |
4139 | |
4140 | /* If we found a permanent breakpoint at this address, go over the | |
aae64587 PA |
4141 | list again and declare all the other breakpoints there (except |
4142 | other permanent breakpoints) to be the duplicates. */ | |
c2c6d25f JM |
4143 | if (perm_bp) |
4144 | { | |
075f6582 | 4145 | perm_bp->duplicate = 0; |
c2c6d25f JM |
4146 | |
4147 | /* Permanent breakpoint should always be inserted. */ | |
075f6582 | 4148 | if (! perm_bp->inserted) |
8e65ff28 | 4149 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 AC |
4150 | _("allegedly permanent breakpoint is not " |
4151 | "actually inserted")); | |
c2c6d25f | 4152 | |
075f6582 | 4153 | ALL_BP_LOCATIONS (b) |
c2c6d25f JM |
4154 | if (b != perm_bp) |
4155 | { | |
aae64587 PA |
4156 | if (b->owner->enable_state != bp_permanent |
4157 | && b->owner->enable_state != bp_disabled | |
075f6582 | 4158 | && b->owner->enable_state != bp_call_disabled |
0d381245 | 4159 | && b->enabled && !b->shlib_disabled |
075f6582 DJ |
4160 | && b->address == address /* address / overlay match */ |
4161 | && (!overlay_debugging || b->section == section) | |
4162 | && breakpoint_address_is_meaningful (b->owner)) | |
4163 | { | |
4164 | if (b->inserted) | |
4165 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 AC |
4166 | _("another breakpoint was inserted on top of " |
4167 | "a permanent breakpoint")); | |
075f6582 DJ |
4168 | |
4169 | b->duplicate = 1; | |
4170 | } | |
c2c6d25f JM |
4171 | } |
4172 | } | |
c906108c SS |
4173 | } |
4174 | ||
0d381245 VP |
4175 | static void |
4176 | check_duplicates (struct breakpoint *bpt) | |
4177 | { | |
4178 | struct bp_location *bl = bpt->loc; | |
4179 | ||
4180 | if (! breakpoint_address_is_meaningful (bpt)) | |
4181 | return; | |
4182 | ||
4183 | for (; bl; bl = bl->next) | |
4184 | check_duplicates_for (bl->address, bl->section); | |
4185 | } | |
4186 | ||
76897487 KB |
4187 | static void |
4188 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
4189 | int bnum, int have_bnum) | |
4190 | { | |
4191 | char astr1[40]; | |
4192 | char astr2[40]; | |
4193 | ||
bb599908 PH |
4194 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
4195 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 4196 | if (have_bnum) |
8a3fe4f8 | 4197 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
4198 | bnum, astr1, astr2); |
4199 | else | |
8a3fe4f8 | 4200 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
4201 | } |
4202 | ||
4203 | /* Adjust a breakpoint's address to account for architectural constraints | |
4204 | on breakpoint placement. Return the adjusted address. Note: Very | |
4205 | few targets require this kind of adjustment. For most targets, | |
4206 | this function is simply the identity function. */ | |
4207 | ||
4208 | static CORE_ADDR | |
88f7da05 | 4209 | adjust_breakpoint_address (CORE_ADDR bpaddr, enum bptype bptype) |
76897487 KB |
4210 | { |
4211 | if (!gdbarch_adjust_breakpoint_address_p (current_gdbarch)) | |
4212 | { | |
4213 | /* Very few targets need any kind of breakpoint adjustment. */ | |
4214 | return bpaddr; | |
4215 | } | |
88f7da05 KB |
4216 | else if (bptype == bp_watchpoint |
4217 | || bptype == bp_hardware_watchpoint | |
4218 | || bptype == bp_read_watchpoint | |
4219 | || bptype == bp_access_watchpoint | |
fe798b75 | 4220 | || bptype == bp_catchpoint) |
88f7da05 KB |
4221 | { |
4222 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
4223 | have their addresses modified. */ | |
4224 | return bpaddr; | |
4225 | } | |
76897487 KB |
4226 | else |
4227 | { | |
4228 | CORE_ADDR adjusted_bpaddr; | |
4229 | ||
4230 | /* Some targets have architectural constraints on the placement | |
4231 | of breakpoint instructions. Obtain the adjusted address. */ | |
4232 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (current_gdbarch, | |
4233 | bpaddr); | |
4234 | ||
4235 | /* An adjusted breakpoint address can significantly alter | |
4236 | a user's expectations. Print a warning if an adjustment | |
4237 | is required. */ | |
4238 | if (adjusted_bpaddr != bpaddr) | |
4239 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
4240 | ||
4241 | return adjusted_bpaddr; | |
4242 | } | |
4243 | } | |
4244 | ||
7cc221ef DJ |
4245 | /* Allocate a struct bp_location. */ |
4246 | ||
26bb91f3 | 4247 | static struct bp_location * |
39d61571 | 4248 | allocate_bp_location (struct breakpoint *bpt) |
7cc221ef DJ |
4249 | { |
4250 | struct bp_location *loc, *loc_p; | |
4251 | ||
4252 | loc = xmalloc (sizeof (struct bp_location)); | |
4253 | memset (loc, 0, sizeof (*loc)); | |
4254 | ||
e049a4b5 | 4255 | loc->owner = bpt; |
511a6cd4 | 4256 | loc->cond = NULL; |
0d381245 VP |
4257 | loc->shlib_disabled = 0; |
4258 | loc->enabled = 1; | |
e049a4b5 | 4259 | |
39d61571 | 4260 | switch (bpt->type) |
e049a4b5 DJ |
4261 | { |
4262 | case bp_breakpoint: | |
1042e4c0 | 4263 | case bp_tracepoint: |
e049a4b5 DJ |
4264 | case bp_until: |
4265 | case bp_finish: | |
4266 | case bp_longjmp: | |
4267 | case bp_longjmp_resume: | |
4268 | case bp_step_resume: | |
e049a4b5 DJ |
4269 | case bp_watchpoint_scope: |
4270 | case bp_call_dummy: | |
4271 | case bp_shlib_event: | |
4272 | case bp_thread_event: | |
4273 | case bp_overlay_event: | |
e049a4b5 DJ |
4274 | loc->loc_type = bp_loc_software_breakpoint; |
4275 | break; | |
4276 | case bp_hardware_breakpoint: | |
4277 | loc->loc_type = bp_loc_hardware_breakpoint; | |
4278 | break; | |
4279 | case bp_hardware_watchpoint: | |
4280 | case bp_read_watchpoint: | |
4281 | case bp_access_watchpoint: | |
4282 | loc->loc_type = bp_loc_hardware_watchpoint; | |
4283 | break; | |
4284 | case bp_watchpoint: | |
ce78b96d | 4285 | case bp_catchpoint: |
e049a4b5 DJ |
4286 | loc->loc_type = bp_loc_other; |
4287 | break; | |
4288 | default: | |
e2e0b3e5 | 4289 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
4290 | } |
4291 | ||
7cc221ef DJ |
4292 | return loc; |
4293 | } | |
4294 | ||
fe3f5fa8 VP |
4295 | static void free_bp_location (struct bp_location *loc) |
4296 | { | |
4297 | if (loc->cond) | |
4298 | xfree (loc->cond); | |
74960c60 VP |
4299 | |
4300 | if (loc->function_name) | |
4301 | xfree (loc->function_name); | |
4302 | ||
fe3f5fa8 VP |
4303 | xfree (loc); |
4304 | } | |
4305 | ||
0d381245 VP |
4306 | /* Helper to set_raw_breakpoint below. Creates a breakpoint |
4307 | that has type BPTYPE and has no locations as yet. */ | |
c906108c | 4308 | |
c40e75cd | 4309 | static struct breakpoint * |
0d381245 | 4310 | set_raw_breakpoint_without_location (enum bptype bptype) |
c906108c | 4311 | { |
52f0bd74 | 4312 | struct breakpoint *b, *b1; |
c906108c SS |
4313 | |
4314 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4315 | memset (b, 0, sizeof (*b)); | |
2219d63c | 4316 | |
4d28f7a8 | 4317 | b->type = bptype; |
c906108c SS |
4318 | b->language = current_language->la_language; |
4319 | b->input_radix = input_radix; | |
4320 | b->thread = -1; | |
b5de0fa7 | 4321 | b->enable_state = bp_enabled; |
c906108c SS |
4322 | b->next = 0; |
4323 | b->silent = 0; | |
4324 | b->ignore_count = 0; | |
4325 | b->commands = NULL; | |
818dd999 | 4326 | b->frame_id = null_frame_id; |
3a3e9ee3 | 4327 | b->forked_inferior_pid = null_ptid; |
c906108c | 4328 | b->exec_pathname = NULL; |
3086aeae | 4329 | b->ops = NULL; |
0d381245 | 4330 | b->condition_not_parsed = 0; |
c906108c SS |
4331 | |
4332 | /* Add this breakpoint to the end of the chain | |
4333 | so that a list of breakpoints will come out in order | |
4334 | of increasing numbers. */ | |
4335 | ||
4336 | b1 = breakpoint_chain; | |
4337 | if (b1 == 0) | |
4338 | breakpoint_chain = b; | |
4339 | else | |
4340 | { | |
4341 | while (b1->next) | |
4342 | b1 = b1->next; | |
4343 | b1->next = b; | |
4344 | } | |
0d381245 VP |
4345 | return b; |
4346 | } | |
4347 | ||
4348 | /* Initialize loc->function_name. */ | |
4349 | static void | |
4350 | set_breakpoint_location_function (struct bp_location *loc) | |
4351 | { | |
4352 | if (loc->owner->type == bp_breakpoint | |
1042e4c0 SS |
4353 | || loc->owner->type == bp_hardware_breakpoint |
4354 | || loc->owner->type == bp_tracepoint) | |
0d381245 VP |
4355 | { |
4356 | find_pc_partial_function (loc->address, &(loc->function_name), | |
4357 | NULL, NULL); | |
4358 | if (loc->function_name) | |
4359 | loc->function_name = xstrdup (loc->function_name); | |
4360 | } | |
4361 | } | |
4362 | ||
4363 | /* set_raw_breakpoint is a low level routine for allocating and | |
4364 | partially initializing a breakpoint of type BPTYPE. The newly | |
4365 | created breakpoint's address, section, source file name, and line | |
4366 | number are provided by SAL. The newly created and partially | |
4367 | initialized breakpoint is added to the breakpoint chain and | |
4368 | is also returned as the value of this function. | |
4369 | ||
4370 | It is expected that the caller will complete the initialization of | |
4371 | the newly created breakpoint struct as well as output any status | |
4372 | information regarding the creation of a new breakpoint. In | |
4373 | particular, set_raw_breakpoint does NOT set the breakpoint | |
4374 | number! Care should be taken to not allow an error to occur | |
4375 | prior to completing the initialization of the breakpoint. If this | |
4376 | should happen, a bogus breakpoint will be left on the chain. */ | |
4377 | ||
4378 | struct breakpoint * | |
4379 | set_raw_breakpoint (struct symtab_and_line sal, enum bptype bptype) | |
4380 | { | |
4381 | struct breakpoint *b = set_raw_breakpoint_without_location (bptype); | |
4382 | CORE_ADDR adjusted_address; | |
4383 | ||
4384 | /* Adjust the breakpoint's address prior to allocating a location. | |
4385 | Once we call allocate_bp_location(), that mostly uninitialized | |
4386 | location will be placed on the location chain. Adjustment of the | |
8defab1a | 4387 | breakpoint may cause target_read_memory() to be called and we do |
0d381245 VP |
4388 | not want its scan of the location chain to find a breakpoint and |
4389 | location that's only been partially initialized. */ | |
39d61571 | 4390 | adjusted_address = adjust_breakpoint_address (sal.pc, b->type); |
0d381245 | 4391 | |
39d61571 | 4392 | b->loc = allocate_bp_location (b); |
0d381245 VP |
4393 | b->loc->requested_address = sal.pc; |
4394 | b->loc->address = adjusted_address; | |
4395 | ||
4396 | if (sal.symtab == NULL) | |
4397 | b->source_file = NULL; | |
4398 | else | |
1b36a34b | 4399 | b->source_file = xstrdup (sal.symtab->filename); |
0d381245 VP |
4400 | b->loc->section = sal.section; |
4401 | b->line_number = sal.line; | |
4402 | ||
4403 | set_breakpoint_location_function (b->loc); | |
c906108c | 4404 | |
c906108c SS |
4405 | breakpoints_changed (); |
4406 | ||
4407 | return b; | |
4408 | } | |
4409 | ||
c2c6d25f JM |
4410 | |
4411 | /* Note that the breakpoint object B describes a permanent breakpoint | |
4412 | instruction, hard-wired into the inferior's code. */ | |
4413 | void | |
4414 | make_breakpoint_permanent (struct breakpoint *b) | |
4415 | { | |
0d381245 | 4416 | struct bp_location *bl; |
b5de0fa7 | 4417 | b->enable_state = bp_permanent; |
c2c6d25f | 4418 | |
0d381245 VP |
4419 | /* By definition, permanent breakpoints are already present in the code. |
4420 | Mark all locations as inserted. For now, make_breakpoint_permanent | |
4421 | is called in just one place, so it's hard to say if it's reasonable | |
4422 | to have permanent breakpoint with multiple locations or not, | |
4423 | but it's easy to implmement. */ | |
4424 | for (bl = b->loc; bl; bl = bl->next) | |
4425 | bl->inserted = 1; | |
c2c6d25f JM |
4426 | } |
4427 | ||
c906108c | 4428 | static void |
fba45db2 | 4429 | create_longjmp_breakpoint (char *func_name) |
c906108c | 4430 | { |
1900040c | 4431 | struct minimal_symbol *m; |
c906108c | 4432 | |
059fb39f PM |
4433 | m = lookup_minimal_symbol_text (func_name, NULL); |
4434 | if (m == NULL) | |
611c83ae PA |
4435 | return; |
4436 | set_momentary_breakpoint_at_pc (SYMBOL_VALUE_ADDRESS (m), bp_longjmp); | |
b60e7edf | 4437 | update_global_location_list (1); |
c906108c SS |
4438 | } |
4439 | ||
53a5351d JM |
4440 | /* Call this routine when stepping and nexting to enable a breakpoint |
4441 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
4442 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
4443 | ||
4444 | void | |
611c83ae | 4445 | set_longjmp_breakpoint (void) |
c906108c | 4446 | { |
611c83ae | 4447 | if (gdbarch_get_longjmp_target_p (current_gdbarch)) |
c5aa993b | 4448 | { |
611c83ae PA |
4449 | create_longjmp_breakpoint ("longjmp"); |
4450 | create_longjmp_breakpoint ("_longjmp"); | |
4451 | create_longjmp_breakpoint ("siglongjmp"); | |
4452 | create_longjmp_breakpoint ("_siglongjmp"); | |
c5aa993b | 4453 | } |
c906108c SS |
4454 | } |
4455 | ||
611c83ae | 4456 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 4457 | void |
611c83ae | 4458 | delete_longjmp_breakpoint (int thread) |
c906108c | 4459 | { |
611c83ae | 4460 | struct breakpoint *b, *temp; |
c906108c | 4461 | |
611c83ae PA |
4462 | ALL_BREAKPOINTS_SAFE (b, temp) |
4463 | if (b->type == bp_longjmp) | |
4464 | { | |
4465 | if (b->thread == thread) | |
4466 | delete_breakpoint (b); | |
4467 | } | |
c906108c SS |
4468 | } |
4469 | ||
1900040c MS |
4470 | void |
4471 | enable_overlay_breakpoints (void) | |
4472 | { | |
52f0bd74 | 4473 | struct breakpoint *b; |
1900040c MS |
4474 | |
4475 | ALL_BREAKPOINTS (b) | |
4476 | if (b->type == bp_overlay_event) | |
4477 | { | |
4478 | b->enable_state = bp_enabled; | |
b60e7edf | 4479 | update_global_location_list (1); |
c02f5703 | 4480 | overlay_events_enabled = 1; |
1900040c MS |
4481 | } |
4482 | } | |
4483 | ||
4484 | void | |
4485 | disable_overlay_breakpoints (void) | |
4486 | { | |
52f0bd74 | 4487 | struct breakpoint *b; |
1900040c MS |
4488 | |
4489 | ALL_BREAKPOINTS (b) | |
4490 | if (b->type == bp_overlay_event) | |
4491 | { | |
4492 | b->enable_state = bp_disabled; | |
b60e7edf | 4493 | update_global_location_list (0); |
c02f5703 | 4494 | overlay_events_enabled = 0; |
1900040c MS |
4495 | } |
4496 | } | |
4497 | ||
c4093a6a | 4498 | struct breakpoint * |
fba45db2 | 4499 | create_thread_event_breakpoint (CORE_ADDR address) |
c4093a6a JM |
4500 | { |
4501 | struct breakpoint *b; | |
c4093a6a | 4502 | |
1900040c | 4503 | b = create_internal_breakpoint (address, bp_thread_event); |
c4093a6a | 4504 | |
b5de0fa7 | 4505 | b->enable_state = bp_enabled; |
c4093a6a | 4506 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
b435e160 | 4507 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); |
c4093a6a | 4508 | |
b60e7edf | 4509 | update_global_location_list_nothrow (1); |
74960c60 | 4510 | |
c4093a6a JM |
4511 | return b; |
4512 | } | |
4513 | ||
4514 | void | |
4515 | remove_thread_event_breakpoints (void) | |
4516 | { | |
4517 | struct breakpoint *b, *temp; | |
4518 | ||
4519 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4520 | if (b->type == bp_thread_event) | |
4521 | delete_breakpoint (b); | |
4522 | } | |
4523 | ||
0101ce28 JJ |
4524 | struct captured_parse_breakpoint_args |
4525 | { | |
4526 | char **arg_p; | |
4527 | struct symtabs_and_lines *sals_p; | |
4528 | char ***addr_string_p; | |
4529 | int *not_found_ptr; | |
4530 | }; | |
4531 | ||
4532 | struct lang_and_radix | |
4533 | { | |
4534 | enum language lang; | |
4535 | int radix; | |
4536 | }; | |
4537 | ||
0101ce28 | 4538 | |
cae688ec JJ |
4539 | void |
4540 | remove_solib_event_breakpoints (void) | |
4541 | { | |
4542 | struct breakpoint *b, *temp; | |
4543 | ||
4544 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4545 | if (b->type == bp_shlib_event) | |
4546 | delete_breakpoint (b); | |
4547 | } | |
4548 | ||
4549 | struct breakpoint * | |
4550 | create_solib_event_breakpoint (CORE_ADDR address) | |
4551 | { | |
4552 | struct breakpoint *b; | |
4553 | ||
4554 | b = create_internal_breakpoint (address, bp_shlib_event); | |
b60e7edf | 4555 | update_global_location_list_nothrow (1); |
cae688ec JJ |
4556 | return b; |
4557 | } | |
4558 | ||
4559 | /* Disable any breakpoints that are on code in shared libraries. Only | |
4560 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4561 | ||
4562 | void | |
cb851954 | 4563 | disable_breakpoints_in_shlibs (void) |
cae688ec | 4564 | { |
0d381245 | 4565 | struct bp_location *loc; |
cae688ec | 4566 | |
0d381245 | 4567 | ALL_BP_LOCATIONS (loc) |
cae688ec | 4568 | { |
0d381245 VP |
4569 | struct breakpoint *b = loc->owner; |
4570 | /* We apply the check to all breakpoints, including disabled | |
4571 | for those with loc->duplicate set. This is so that when breakpoint | |
4572 | becomes enabled, or the duplicate is removed, gdb will try to insert | |
4573 | all breakpoints. If we don't set shlib_disabled here, we'll try | |
4574 | to insert those breakpoints and fail. */ | |
1042e4c0 SS |
4575 | if (((b->type == bp_breakpoint) |
4576 | || (b->type == bp_hardware_breakpoint) | |
4577 | || (b->type == bp_tracepoint)) | |
0d381245 | 4578 | && !loc->shlib_disabled |
a77053c2 | 4579 | #ifdef PC_SOLIB |
0d381245 | 4580 | && PC_SOLIB (loc->address) |
a77053c2 | 4581 | #else |
f5c9a895 | 4582 | && solib_name_from_address (loc->address) |
a77053c2 MK |
4583 | #endif |
4584 | ) | |
0d381245 VP |
4585 | { |
4586 | loc->shlib_disabled = 1; | |
4587 | } | |
cae688ec JJ |
4588 | } |
4589 | } | |
4590 | ||
84acb35a JJ |
4591 | /* Disable any breakpoints that are in in an unloaded shared library. Only |
4592 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4593 | ||
75149521 | 4594 | static void |
84acb35a JJ |
4595 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
4596 | { | |
0d381245 | 4597 | struct bp_location *loc; |
84acb35a JJ |
4598 | int disabled_shlib_breaks = 0; |
4599 | ||
c86cf029 VP |
4600 | /* SunOS a.out shared libraries are always mapped, so do not |
4601 | disable breakpoints; they will only be reported as unloaded | |
4602 | through clear_solib when GDB discards its shared library | |
4603 | list. See clear_solib for more information. */ | |
4604 | if (exec_bfd != NULL | |
4605 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
4606 | return; | |
4607 | ||
0d381245 | 4608 | ALL_BP_LOCATIONS (loc) |
84acb35a | 4609 | { |
0d381245 VP |
4610 | struct breakpoint *b = loc->owner; |
4611 | if ((loc->loc_type == bp_loc_hardware_breakpoint | |
4612 | || loc->loc_type == bp_loc_software_breakpoint) | |
e2dd7057 PP |
4613 | && !loc->shlib_disabled |
4614 | && (b->type == bp_breakpoint || b->type == bp_hardware_breakpoint) | |
4615 | && solib_contains_address_p (solib, loc->address)) | |
84acb35a | 4616 | { |
e2dd7057 PP |
4617 | loc->shlib_disabled = 1; |
4618 | /* At this point, we cannot rely on remove_breakpoint | |
4619 | succeeding so we must mark the breakpoint as not inserted | |
4620 | to prevent future errors occurring in remove_breakpoints. */ | |
4621 | loc->inserted = 0; | |
4622 | if (!disabled_shlib_breaks) | |
4623 | { | |
4624 | target_terminal_ours_for_output (); | |
4625 | warning (_("Temporarily disabling breakpoints for unloaded shared library \"%s\""), | |
4626 | solib->so_name); | |
84acb35a | 4627 | } |
e2dd7057 | 4628 | disabled_shlib_breaks = 1; |
84acb35a JJ |
4629 | } |
4630 | } | |
84acb35a JJ |
4631 | } |
4632 | ||
ce78b96d JB |
4633 | /* FORK & VFORK catchpoints. */ |
4634 | ||
4635 | /* Implement the "insert" breakpoint_ops method for fork catchpoints. */ | |
4636 | ||
c906108c | 4637 | static void |
ce78b96d JB |
4638 | insert_catch_fork (struct breakpoint *b) |
4639 | { | |
4640 | target_insert_fork_catchpoint (PIDGET (inferior_ptid)); | |
4641 | } | |
4642 | ||
4643 | /* Implement the "remove" breakpoint_ops method for fork catchpoints. */ | |
4644 | ||
4645 | static int | |
4646 | remove_catch_fork (struct breakpoint *b) | |
4647 | { | |
4648 | return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); | |
4649 | } | |
4650 | ||
4651 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
4652 | catchpoints. */ | |
4653 | ||
4654 | static int | |
4655 | breakpoint_hit_catch_fork (struct breakpoint *b) | |
4656 | { | |
4657 | return inferior_has_forked (inferior_ptid, &b->forked_inferior_pid); | |
4658 | } | |
4659 | ||
4660 | /* Implement the "print_it" breakpoint_ops method for fork catchpoints. */ | |
4661 | ||
4662 | static enum print_stop_action | |
4663 | print_it_catch_fork (struct breakpoint *b) | |
4664 | { | |
4665 | annotate_catchpoint (b->number); | |
4666 | printf_filtered (_("\nCatchpoint %d (forked process %d), "), | |
4667 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
4668 | return PRINT_SRC_AND_LOC; | |
4669 | } | |
4670 | ||
4671 | /* Implement the "print_one" breakpoint_ops method for fork catchpoints. */ | |
4672 | ||
4673 | static void | |
4674 | print_one_catch_fork (struct breakpoint *b, CORE_ADDR *last_addr) | |
4675 | { | |
79a45b7d TT |
4676 | struct value_print_options opts; |
4677 | ||
4678 | get_user_print_options (&opts); | |
4679 | ||
ce78b96d JB |
4680 | /* Field 4, the address, is omitted (which makes the columns |
4681 | not line up too nicely with the headers, but the effect | |
4682 | is relatively readable). */ | |
79a45b7d | 4683 | if (opts.addressprint) |
ce78b96d JB |
4684 | ui_out_field_skip (uiout, "addr"); |
4685 | annotate_field (5); | |
4686 | ui_out_text (uiout, "fork"); | |
4687 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
4688 | { | |
4689 | ui_out_text (uiout, ", process "); | |
4690 | ui_out_field_int (uiout, "what", | |
4691 | ptid_get_pid (b->forked_inferior_pid)); | |
4692 | ui_out_spaces (uiout, 1); | |
4693 | } | |
4694 | } | |
4695 | ||
4696 | /* Implement the "print_mention" breakpoint_ops method for fork | |
4697 | catchpoints. */ | |
4698 | ||
4699 | static void | |
4700 | print_mention_catch_fork (struct breakpoint *b) | |
4701 | { | |
4702 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
4703 | } | |
4704 | ||
4705 | /* The breakpoint_ops structure to be used in fork catchpoints. */ | |
4706 | ||
4707 | static struct breakpoint_ops catch_fork_breakpoint_ops = | |
4708 | { | |
4709 | insert_catch_fork, | |
4710 | remove_catch_fork, | |
4711 | breakpoint_hit_catch_fork, | |
4712 | print_it_catch_fork, | |
4713 | print_one_catch_fork, | |
4714 | print_mention_catch_fork | |
4715 | }; | |
4716 | ||
4717 | /* Implement the "insert" breakpoint_ops method for vfork catchpoints. */ | |
4718 | ||
4719 | static void | |
4720 | insert_catch_vfork (struct breakpoint *b) | |
4721 | { | |
4722 | target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); | |
4723 | } | |
4724 | ||
4725 | /* Implement the "remove" breakpoint_ops method for vfork catchpoints. */ | |
4726 | ||
4727 | static int | |
4728 | remove_catch_vfork (struct breakpoint *b) | |
4729 | { | |
4730 | return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); | |
4731 | } | |
4732 | ||
4733 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
4734 | catchpoints. */ | |
4735 | ||
4736 | static int | |
4737 | breakpoint_hit_catch_vfork (struct breakpoint *b) | |
4738 | { | |
4739 | return inferior_has_vforked (inferior_ptid, &b->forked_inferior_pid); | |
4740 | } | |
4741 | ||
4742 | /* Implement the "print_it" breakpoint_ops method for vfork catchpoints. */ | |
4743 | ||
4744 | static enum print_stop_action | |
4745 | print_it_catch_vfork (struct breakpoint *b) | |
4746 | { | |
4747 | annotate_catchpoint (b->number); | |
4748 | printf_filtered (_("\nCatchpoint %d (vforked process %d), "), | |
4749 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
4750 | return PRINT_SRC_AND_LOC; | |
4751 | } | |
4752 | ||
4753 | /* Implement the "print_one" breakpoint_ops method for vfork catchpoints. */ | |
4754 | ||
4755 | static void | |
4756 | print_one_catch_vfork (struct breakpoint *b, CORE_ADDR *last_addr) | |
4757 | { | |
79a45b7d TT |
4758 | struct value_print_options opts; |
4759 | ||
4760 | get_user_print_options (&opts); | |
ce78b96d JB |
4761 | /* Field 4, the address, is omitted (which makes the columns |
4762 | not line up too nicely with the headers, but the effect | |
4763 | is relatively readable). */ | |
79a45b7d | 4764 | if (opts.addressprint) |
ce78b96d JB |
4765 | ui_out_field_skip (uiout, "addr"); |
4766 | annotate_field (5); | |
4767 | ui_out_text (uiout, "vfork"); | |
4768 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
4769 | { | |
4770 | ui_out_text (uiout, ", process "); | |
4771 | ui_out_field_int (uiout, "what", | |
4772 | ptid_get_pid (b->forked_inferior_pid)); | |
4773 | ui_out_spaces (uiout, 1); | |
4774 | } | |
4775 | } | |
4776 | ||
4777 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
4778 | catchpoints. */ | |
4779 | ||
4780 | static void | |
4781 | print_mention_catch_vfork (struct breakpoint *b) | |
4782 | { | |
4783 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
4784 | } | |
4785 | ||
4786 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ | |
4787 | ||
4788 | static struct breakpoint_ops catch_vfork_breakpoint_ops = | |
4789 | { | |
4790 | insert_catch_vfork, | |
4791 | remove_catch_vfork, | |
4792 | breakpoint_hit_catch_vfork, | |
4793 | print_it_catch_vfork, | |
4794 | print_one_catch_vfork, | |
4795 | print_mention_catch_vfork | |
4796 | }; | |
4797 | ||
4798 | /* Create a new breakpoint of the bp_catchpoint kind and return it. | |
4799 | ||
4800 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
4801 | If COND_STRING is not NULL, then store it in the breakpoint. | |
4802 | OPS, if not NULL, is the breakpoint_ops structure associated | |
4803 | to the catchpoint. */ | |
4804 | ||
4805 | static struct breakpoint * | |
4806 | create_catchpoint (int tempflag, char *cond_string, | |
4807 | struct breakpoint_ops *ops) | |
c906108c | 4808 | { |
c5aa993b JM |
4809 | struct symtab_and_line sal; |
4810 | struct breakpoint *b; | |
c5aa993b | 4811 | |
fe39c653 | 4812 | init_sal (&sal); |
c906108c SS |
4813 | sal.pc = 0; |
4814 | sal.symtab = NULL; | |
4815 | sal.line = 0; | |
c5aa993b | 4816 | |
ce78b96d | 4817 | b = set_raw_breakpoint (sal, bp_catchpoint); |
c906108c SS |
4818 | set_breakpoint_count (breakpoint_count + 1); |
4819 | b->number = breakpoint_count; | |
ce78b96d | 4820 | |
1b36a34b | 4821 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
ce78b96d | 4822 | b->thread = -1; |
c906108c | 4823 | b->addr_string = NULL; |
b5de0fa7 EZ |
4824 | b->enable_state = bp_enabled; |
4825 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
ce78b96d | 4826 | b->ops = ops; |
c5aa993b | 4827 | |
c906108c | 4828 | mention (b); |
ce78b96d | 4829 | update_global_location_list (1); |
c906108c | 4830 | |
ce78b96d | 4831 | return b; |
c906108c | 4832 | } |
c5aa993b | 4833 | |
9b70b993 | 4834 | static void |
ce78b96d JB |
4835 | create_fork_vfork_event_catchpoint (int tempflag, char *cond_string, |
4836 | struct breakpoint_ops *ops) | |
c906108c | 4837 | { |
ce78b96d JB |
4838 | struct breakpoint *b = create_catchpoint (tempflag, cond_string, ops); |
4839 | ||
4840 | /* FIXME: We should put this information in a breakpoint private data | |
4841 | area. */ | |
4842 | b->forked_inferior_pid = null_ptid; | |
c906108c SS |
4843 | } |
4844 | ||
fe798b75 JB |
4845 | /* Exec catchpoints. */ |
4846 | ||
9b70b993 | 4847 | static void |
fe798b75 | 4848 | insert_catch_exec (struct breakpoint *b) |
c906108c | 4849 | { |
fe798b75 JB |
4850 | target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
4851 | } | |
c906108c | 4852 | |
fe798b75 JB |
4853 | static int |
4854 | remove_catch_exec (struct breakpoint *b) | |
4855 | { | |
4856 | return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); | |
4857 | } | |
c906108c | 4858 | |
fe798b75 JB |
4859 | static int |
4860 | breakpoint_hit_catch_exec (struct breakpoint *b) | |
4861 | { | |
4862 | return inferior_has_execd (inferior_ptid, &b->exec_pathname); | |
4863 | } | |
c906108c | 4864 | |
fe798b75 JB |
4865 | static enum print_stop_action |
4866 | print_it_catch_exec (struct breakpoint *b) | |
4867 | { | |
4868 | annotate_catchpoint (b->number); | |
4869 | printf_filtered (_("\nCatchpoint %d (exec'd %s), "), b->number, | |
4870 | b->exec_pathname); | |
4871 | return PRINT_SRC_AND_LOC; | |
c906108c SS |
4872 | } |
4873 | ||
fe798b75 JB |
4874 | static void |
4875 | print_one_catch_exec (struct breakpoint *b, CORE_ADDR *last_addr) | |
4876 | { | |
4877 | struct value_print_options opts; | |
4878 | ||
4879 | get_user_print_options (&opts); | |
4880 | ||
4881 | /* Field 4, the address, is omitted (which makes the columns | |
4882 | not line up too nicely with the headers, but the effect | |
4883 | is relatively readable). */ | |
4884 | if (opts.addressprint) | |
4885 | ui_out_field_skip (uiout, "addr"); | |
4886 | annotate_field (5); | |
4887 | ui_out_text (uiout, "exec"); | |
4888 | if (b->exec_pathname != NULL) | |
4889 | { | |
4890 | ui_out_text (uiout, ", program \""); | |
4891 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
4892 | ui_out_text (uiout, "\" "); | |
4893 | } | |
4894 | } | |
4895 | ||
4896 | static void | |
4897 | print_mention_catch_exec (struct breakpoint *b) | |
4898 | { | |
4899 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
4900 | } | |
4901 | ||
4902 | static struct breakpoint_ops catch_exec_breakpoint_ops = | |
4903 | { | |
4904 | insert_catch_exec, | |
4905 | remove_catch_exec, | |
4906 | breakpoint_hit_catch_exec, | |
4907 | print_it_catch_exec, | |
4908 | print_one_catch_exec, | |
4909 | print_mention_catch_exec | |
4910 | }; | |
4911 | ||
c906108c | 4912 | static int |
fba45db2 | 4913 | hw_breakpoint_used_count (void) |
c906108c | 4914 | { |
52f0bd74 | 4915 | struct breakpoint *b; |
c906108c SS |
4916 | int i = 0; |
4917 | ||
4918 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4919 | { |
d6b74ac4 | 4920 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
c5aa993b JM |
4921 | i++; |
4922 | } | |
c906108c SS |
4923 | |
4924 | return i; | |
4925 | } | |
4926 | ||
4927 | static int | |
fba45db2 | 4928 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 4929 | { |
52f0bd74 | 4930 | struct breakpoint *b; |
c906108c SS |
4931 | int i = 0; |
4932 | ||
4933 | *other_type_used = 0; | |
4934 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4935 | { |
468d015d | 4936 | if (breakpoint_enabled (b)) |
c5aa993b JM |
4937 | { |
4938 | if (b->type == type) | |
4939 | i++; | |
059fb39f PM |
4940 | else if ((b->type == bp_hardware_watchpoint |
4941 | || b->type == bp_read_watchpoint | |
4942 | || b->type == bp_access_watchpoint)) | |
c5aa993b JM |
4943 | *other_type_used = 1; |
4944 | } | |
4945 | } | |
c906108c SS |
4946 | return i; |
4947 | } | |
4948 | ||
c906108c | 4949 | void |
fba45db2 | 4950 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 4951 | { |
c5aa993b | 4952 | struct breakpoint *b; |
c906108c SS |
4953 | |
4954 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4955 | { |
4956 | if (((b->type == bp_watchpoint) | |
4957 | || (b->type == bp_hardware_watchpoint) | |
4958 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 4959 | || (b->type == bp_access_watchpoint)) |
468d015d | 4960 | && breakpoint_enabled (b)) |
c5aa993b | 4961 | { |
b5de0fa7 | 4962 | b->enable_state = bp_call_disabled; |
b60e7edf | 4963 | update_global_location_list (0); |
c5aa993b JM |
4964 | } |
4965 | } | |
c906108c SS |
4966 | } |
4967 | ||
4968 | void | |
fba45db2 | 4969 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 4970 | { |
c5aa993b | 4971 | struct breakpoint *b; |
c906108c SS |
4972 | |
4973 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4974 | { |
4975 | if (((b->type == bp_watchpoint) | |
4976 | || (b->type == bp_hardware_watchpoint) | |
4977 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 4978 | || (b->type == bp_access_watchpoint)) |
b5de0fa7 | 4979 | && (b->enable_state == bp_call_disabled)) |
c5aa993b | 4980 | { |
b5de0fa7 | 4981 | b->enable_state = bp_enabled; |
b60e7edf | 4982 | update_global_location_list (1); |
c5aa993b JM |
4983 | } |
4984 | } | |
c906108c SS |
4985 | } |
4986 | ||
4987 | ||
4988 | /* Set a breakpoint that will evaporate an end of command | |
4989 | at address specified by SAL. | |
4990 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
4991 | ||
4992 | struct breakpoint * | |
818dd999 | 4993 | set_momentary_breakpoint (struct symtab_and_line sal, struct frame_id frame_id, |
fba45db2 | 4994 | enum bptype type) |
c906108c | 4995 | { |
52f0bd74 | 4996 | struct breakpoint *b; |
4d28f7a8 | 4997 | b = set_raw_breakpoint (sal, type); |
b5de0fa7 EZ |
4998 | b->enable_state = bp_enabled; |
4999 | b->disposition = disp_donttouch; | |
818dd999 | 5000 | b->frame_id = frame_id; |
c906108c SS |
5001 | |
5002 | /* If we're debugging a multi-threaded program, then we | |
5003 | want momentary breakpoints to be active in only a | |
5004 | single thread of control. */ | |
39f77062 KB |
5005 | if (in_thread_list (inferior_ptid)) |
5006 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 5007 | |
b60e7edf | 5008 | update_global_location_list_nothrow (1); |
74960c60 | 5009 | |
c906108c SS |
5010 | return b; |
5011 | } | |
611c83ae | 5012 | |
e58b0e63 PA |
5013 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
5014 | ORIG is NULL. */ | |
5015 | ||
5016 | struct breakpoint * | |
5017 | clone_momentary_breakpoint (struct breakpoint *orig) | |
5018 | { | |
5019 | struct breakpoint *copy; | |
5020 | ||
5021 | /* If there's nothing to clone, then return nothing. */ | |
5022 | if (orig == NULL) | |
5023 | return NULL; | |
5024 | ||
5025 | copy = set_raw_breakpoint_without_location (orig->type); | |
5026 | copy->loc = allocate_bp_location (copy); | |
5027 | set_breakpoint_location_function (copy->loc); | |
5028 | ||
5029 | copy->loc->requested_address = orig->loc->requested_address; | |
5030 | copy->loc->address = orig->loc->address; | |
5031 | copy->loc->section = orig->loc->section; | |
5032 | ||
5033 | if (orig->source_file == NULL) | |
5034 | copy->source_file = NULL; | |
5035 | else | |
5036 | copy->source_file = xstrdup (orig->source_file); | |
5037 | ||
5038 | copy->line_number = orig->line_number; | |
5039 | copy->frame_id = orig->frame_id; | |
5040 | copy->thread = orig->thread; | |
5041 | ||
5042 | copy->enable_state = bp_enabled; | |
5043 | copy->disposition = disp_donttouch; | |
5044 | copy->number = internal_breakpoint_number--; | |
5045 | ||
5046 | update_global_location_list_nothrow (0); | |
5047 | return copy; | |
5048 | } | |
5049 | ||
611c83ae PA |
5050 | struct breakpoint * |
5051 | set_momentary_breakpoint_at_pc (CORE_ADDR pc, enum bptype type) | |
5052 | { | |
5053 | struct symtab_and_line sal; | |
5054 | ||
5055 | sal = find_pc_line (pc, 0); | |
5056 | sal.pc = pc; | |
5057 | sal.section = find_pc_overlay (pc); | |
5058 | sal.explicit_pc = 1; | |
5059 | ||
5060 | return set_momentary_breakpoint (sal, null_frame_id, type); | |
5061 | } | |
c906108c | 5062 | \f |
c5aa993b | 5063 | |
c906108c SS |
5064 | /* Tell the user we have just set a breakpoint B. */ |
5065 | ||
5066 | static void | |
fba45db2 | 5067 | mention (struct breakpoint *b) |
c906108c SS |
5068 | { |
5069 | int say_where = 0; | |
fa8a61dc | 5070 | struct cleanup *ui_out_chain; |
79a45b7d TT |
5071 | struct value_print_options opts; |
5072 | ||
5073 | get_user_print_options (&opts); | |
8b93c638 | 5074 | |
9a4105ab AC |
5075 | /* FIXME: This is misplaced; mention() is called by things (like |
5076 | hitting a watchpoint) other than breakpoint creation. It should | |
5077 | be possible to clean this up and at the same time replace the | |
7f4b89d1 | 5078 | random calls to breakpoint_changed with this hook. */ |
383f836e | 5079 | observer_notify_breakpoint_created (b->number); |
c906108c | 5080 | |
3086aeae DJ |
5081 | if (b->ops != NULL && b->ops->print_mention != NULL) |
5082 | b->ops->print_mention (b); | |
5083 | else | |
5084 | switch (b->type) | |
5085 | { | |
5086 | case bp_none: | |
a3f17187 | 5087 | printf_filtered (_("(apparently deleted?) Eventpoint %d: "), b->number); |
3086aeae DJ |
5088 | break; |
5089 | case bp_watchpoint: | |
5090 | ui_out_text (uiout, "Watchpoint "); | |
5091 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
5092 | ui_out_field_int (uiout, "number", b->number); | |
5093 | ui_out_text (uiout, ": "); | |
fa8a61dc | 5094 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
5095 | do_cleanups (ui_out_chain); |
5096 | break; | |
5097 | case bp_hardware_watchpoint: | |
5098 | ui_out_text (uiout, "Hardware watchpoint "); | |
5099 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
5100 | ui_out_field_int (uiout, "number", b->number); | |
5101 | ui_out_text (uiout, ": "); | |
fa8a61dc | 5102 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
5103 | do_cleanups (ui_out_chain); |
5104 | break; | |
5105 | case bp_read_watchpoint: | |
5106 | ui_out_text (uiout, "Hardware read watchpoint "); | |
5107 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
5108 | ui_out_field_int (uiout, "number", b->number); | |
5109 | ui_out_text (uiout, ": "); | |
fa8a61dc | 5110 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
5111 | do_cleanups (ui_out_chain); |
5112 | break; | |
5113 | case bp_access_watchpoint: | |
5114 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
5115 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
5116 | ui_out_field_int (uiout, "number", b->number); | |
5117 | ui_out_text (uiout, ": "); | |
fa8a61dc | 5118 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
5119 | do_cleanups (ui_out_chain); |
5120 | break; | |
5121 | case bp_breakpoint: | |
5122 | if (ui_out_is_mi_like_p (uiout)) | |
5123 | { | |
5124 | say_where = 0; | |
5125 | break; | |
5126 | } | |
2cec12e5 AR |
5127 | if (b->disposition == disp_del) |
5128 | printf_filtered (_("Temporary breakpoint")); | |
5129 | else | |
5130 | printf_filtered (_("Breakpoint")); | |
5131 | printf_filtered (_(" %d"), b->number); | |
3086aeae DJ |
5132 | say_where = 1; |
5133 | break; | |
5134 | case bp_hardware_breakpoint: | |
5135 | if (ui_out_is_mi_like_p (uiout)) | |
5136 | { | |
5137 | say_where = 0; | |
5138 | break; | |
5139 | } | |
a3f17187 | 5140 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); |
3086aeae DJ |
5141 | say_where = 1; |
5142 | break; | |
1042e4c0 SS |
5143 | case bp_tracepoint: |
5144 | if (ui_out_is_mi_like_p (uiout)) | |
5145 | { | |
5146 | say_where = 0; | |
5147 | break; | |
5148 | } | |
5149 | printf_filtered (_("Tracepoint")); | |
5150 | printf_filtered (_(" %d"), b->number); | |
5151 | say_where = 1; | |
5152 | break; | |
3086aeae DJ |
5153 | |
5154 | case bp_until: | |
5155 | case bp_finish: | |
5156 | case bp_longjmp: | |
5157 | case bp_longjmp_resume: | |
5158 | case bp_step_resume: | |
3086aeae DJ |
5159 | case bp_call_dummy: |
5160 | case bp_watchpoint_scope: | |
5161 | case bp_shlib_event: | |
5162 | case bp_thread_event: | |
5163 | case bp_overlay_event: | |
5164 | break; | |
5165 | } | |
c906108c | 5166 | |
c906108c SS |
5167 | if (say_where) |
5168 | { | |
a3f17187 AC |
5169 | /* i18n: cagney/2005-02-11: Below needs to be merged into a |
5170 | single string. */ | |
0d381245 | 5171 | if (b->loc == NULL) |
c906108c | 5172 | { |
a3f17187 | 5173 | printf_filtered (_(" (%s) pending."), b->addr_string); |
0101ce28 JJ |
5174 | } |
5175 | else | |
5176 | { | |
79a45b7d | 5177 | if (opts.addressprint || b->source_file == NULL) |
0101ce28 JJ |
5178 | { |
5179 | printf_filtered (" at "); | |
ed49a04f | 5180 | fputs_filtered (paddress (b->loc->address), gdb_stdout); |
0101ce28 JJ |
5181 | } |
5182 | if (b->source_file) | |
5183 | printf_filtered (": file %s, line %d.", | |
5184 | b->source_file, b->line_number); | |
0d381245 VP |
5185 | |
5186 | if (b->loc->next) | |
5187 | { | |
5188 | struct bp_location *loc = b->loc; | |
5189 | int n = 0; | |
5190 | for (; loc; loc = loc->next) | |
5191 | ++n; | |
5192 | printf_filtered (" (%d locations)", n); | |
5193 | } | |
5194 | ||
c906108c | 5195 | } |
c906108c | 5196 | } |
9dc5e2a9 | 5197 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 5198 | return; |
c906108c SS |
5199 | printf_filtered ("\n"); |
5200 | } | |
c906108c | 5201 | \f |
c5aa993b | 5202 | |
0d381245 | 5203 | static struct bp_location * |
39d61571 | 5204 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
5205 | const struct symtab_and_line *sal) |
5206 | { | |
5207 | struct bp_location *loc, **tmp; | |
5208 | ||
39d61571 | 5209 | loc = allocate_bp_location (b); |
0d381245 VP |
5210 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
5211 | ; | |
5212 | *tmp = loc; | |
5213 | loc->requested_address = sal->pc; | |
39d61571 | 5214 | loc->address = adjust_breakpoint_address (loc->requested_address, b->type); |
0d381245 VP |
5215 | loc->section = sal->section; |
5216 | ||
5217 | set_breakpoint_location_function (loc); | |
5218 | return loc; | |
5219 | } | |
514f746b AR |
5220 | \f |
5221 | ||
5222 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
5223 | return 0 otherwise. */ | |
5224 | ||
5225 | static int | |
5226 | bp_loc_is_permanent (struct bp_location *loc) | |
5227 | { | |
5228 | int len; | |
5229 | CORE_ADDR addr; | |
5230 | const gdb_byte *brk; | |
5231 | gdb_byte *target_mem; | |
939c61fa JK |
5232 | struct cleanup *cleanup; |
5233 | int retval = 0; | |
514f746b AR |
5234 | |
5235 | gdb_assert (loc != NULL); | |
5236 | ||
5237 | addr = loc->address; | |
5238 | brk = gdbarch_breakpoint_from_pc (current_gdbarch, &addr, &len); | |
5239 | ||
939c61fa JK |
5240 | /* Software breakpoints unsupported? */ |
5241 | if (brk == NULL) | |
5242 | return 0; | |
5243 | ||
514f746b AR |
5244 | target_mem = alloca (len); |
5245 | ||
939c61fa JK |
5246 | /* Enable the automatic memory restoration from breakpoints while |
5247 | we read the memory. Otherwise we could say about our temporary | |
5248 | breakpoints they are permanent. */ | |
5249 | cleanup = make_show_memory_breakpoints_cleanup (0); | |
5250 | ||
514f746b AR |
5251 | if (target_read_memory (loc->address, target_mem, len) == 0 |
5252 | && memcmp (target_mem, brk, len) == 0) | |
939c61fa | 5253 | retval = 1; |
514f746b | 5254 | |
939c61fa JK |
5255 | do_cleanups (cleanup); |
5256 | ||
5257 | return retval; | |
514f746b AR |
5258 | } |
5259 | ||
5260 | ||
c3f6f71d | 5261 | |
018d34a4 VP |
5262 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
5263 | as textual description of the location, and COND_STRING | |
db107f19 | 5264 | as condition expression. */ |
018d34a4 VP |
5265 | |
5266 | static void | |
0d381245 | 5267 | create_breakpoint (struct symtabs_and_lines sals, char *addr_string, |
018d34a4 VP |
5268 | char *cond_string, |
5269 | enum bptype type, enum bpdisp disposition, | |
4a306c9a | 5270 | int thread, int task, int ignore_count, |
41447f92 | 5271 | struct breakpoint_ops *ops, int from_tty, int enabled) |
018d34a4 | 5272 | { |
0d381245 VP |
5273 | struct breakpoint *b = NULL; |
5274 | int i; | |
018d34a4 VP |
5275 | |
5276 | if (type == bp_hardware_breakpoint) | |
5277 | { | |
5278 | int i = hw_breakpoint_used_count (); | |
5279 | int target_resources_ok = | |
d92524f1 | 5280 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
018d34a4 VP |
5281 | i + 1, 0); |
5282 | if (target_resources_ok == 0) | |
5283 | error (_("No hardware breakpoint support in the target.")); | |
5284 | else if (target_resources_ok < 0) | |
5285 | error (_("Hardware breakpoints used exceeds limit.")); | |
5286 | } | |
5287 | ||
0d381245 VP |
5288 | for (i = 0; i < sals.nelts; ++i) |
5289 | { | |
5290 | struct symtab_and_line sal = sals.sals[i]; | |
5291 | struct bp_location *loc; | |
5292 | ||
5293 | if (from_tty) | |
5294 | describe_other_breakpoints (sal.pc, sal.section, thread); | |
5295 | ||
5296 | if (i == 0) | |
5297 | { | |
5298 | b = set_raw_breakpoint (sal, type); | |
5299 | set_breakpoint_count (breakpoint_count + 1); | |
5300 | b->number = breakpoint_count; | |
5301 | b->thread = thread; | |
4a306c9a | 5302 | b->task = task; |
018d34a4 | 5303 | |
0d381245 VP |
5304 | b->cond_string = cond_string; |
5305 | b->ignore_count = ignore_count; | |
41447f92 | 5306 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 5307 | b->disposition = disposition; |
018d34a4 | 5308 | |
0d381245 VP |
5309 | loc = b->loc; |
5310 | } | |
5311 | else | |
018d34a4 | 5312 | { |
39d61571 | 5313 | loc = add_location_to_breakpoint (b, &sal); |
0d381245 VP |
5314 | } |
5315 | ||
514f746b AR |
5316 | if (bp_loc_is_permanent (loc)) |
5317 | make_breakpoint_permanent (b); | |
5318 | ||
0d381245 VP |
5319 | if (b->cond_string) |
5320 | { | |
5321 | char *arg = b->cond_string; | |
d32a6982 | 5322 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); |
0d381245 | 5323 | if (*arg) |
db107f19 | 5324 | error (_("Garbage %s follows condition"), arg); |
018d34a4 | 5325 | } |
0d381245 | 5326 | } |
018d34a4 VP |
5327 | |
5328 | if (addr_string) | |
5329 | b->addr_string = addr_string; | |
5330 | else | |
5331 | /* addr_string has to be used or breakpoint_re_set will delete | |
5332 | me. */ | |
5333 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); | |
5334 | ||
604133b5 | 5335 | b->ops = ops; |
018d34a4 VP |
5336 | mention (b); |
5337 | } | |
5338 | ||
ed0616c6 VP |
5339 | /* Remove element at INDEX_TO_REMOVE from SAL, shifting other |
5340 | elements to fill the void space. */ | |
2c0b251b PA |
5341 | static void |
5342 | remove_sal (struct symtabs_and_lines *sal, int index_to_remove) | |
ed0616c6 VP |
5343 | { |
5344 | int i = index_to_remove+1; | |
5345 | int last_index = sal->nelts-1; | |
5346 | ||
5347 | for (;i <= last_index; ++i) | |
5348 | sal->sals[i-1] = sal->sals[i]; | |
5349 | ||
5350 | --(sal->nelts); | |
5351 | } | |
5352 | ||
5353 | /* If appropriate, obtains all sals that correspond | |
5354 | to the same file and line as SAL. This is done | |
5355 | only if SAL does not have explicit PC and has | |
5356 | line and file information. If we got just a single | |
5357 | expanded sal, return the original. | |
5358 | ||
5359 | Otherwise, if SAL.explicit_line is not set, filter out | |
5360 | all sals for which the name of enclosing function | |
5361 | is different from SAL. This makes sure that if we have | |
5362 | breakpoint originally set in template instantiation, say | |
5363 | foo<int>(), we won't expand SAL to locations at the same | |
5364 | line in all existing instantiations of 'foo'. | |
5365 | ||
5366 | */ | |
2c0b251b | 5367 | static struct symtabs_and_lines |
ed0616c6 VP |
5368 | expand_line_sal_maybe (struct symtab_and_line sal) |
5369 | { | |
5370 | struct symtabs_and_lines expanded; | |
5371 | CORE_ADDR original_pc = sal.pc; | |
5372 | char *original_function = NULL; | |
5373 | int found; | |
5374 | int i; | |
5375 | ||
5376 | /* If we have explicit pc, don't expand. | |
5377 | If we have no line number, we can't expand. */ | |
5378 | if (sal.explicit_pc || sal.line == 0 || sal.symtab == NULL) | |
5379 | { | |
5380 | expanded.nelts = 1; | |
5381 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5382 | expanded.sals[0] = sal; | |
5383 | return expanded; | |
5384 | } | |
5385 | ||
5386 | sal.pc = 0; | |
5387 | find_pc_partial_function (original_pc, &original_function, NULL, NULL); | |
5388 | ||
5389 | expanded = expand_line_sal (sal); | |
5390 | if (expanded.nelts == 1) | |
5391 | { | |
5392 | /* We had one sal, we got one sal. Without futher | |
5393 | processing, just return the original sal. */ | |
5394 | xfree (expanded.sals); | |
5395 | expanded.nelts = 1; | |
5396 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5397 | sal.pc = original_pc; | |
5398 | expanded.sals[0] = sal; | |
5399 | return expanded; | |
5400 | } | |
5401 | ||
5402 | if (!sal.explicit_line) | |
5403 | { | |
5404 | CORE_ADDR func_addr, func_end; | |
5405 | for (i = 0; i < expanded.nelts; ++i) | |
5406 | { | |
5407 | CORE_ADDR pc = expanded.sals[i].pc; | |
5408 | char *this_function; | |
5409 | if (find_pc_partial_function (pc, &this_function, | |
5410 | &func_addr, &func_end)) | |
5411 | { | |
059fb39f PM |
5412 | if (this_function |
5413 | && strcmp (this_function, original_function) != 0) | |
ed0616c6 VP |
5414 | { |
5415 | remove_sal (&expanded, i); | |
5416 | --i; | |
5417 | } | |
5418 | else if (func_addr == pc) | |
5419 | { | |
5420 | /* We're at beginning of a function, and should | |
5421 | skip prologue. */ | |
5422 | struct symbol *sym = find_pc_function (pc); | |
5423 | if (sym) | |
5424 | expanded.sals[i] = find_function_start_sal (sym, 1); | |
5425 | else | |
d80b854b UW |
5426 | { |
5427 | /* Since find_pc_partial_function returned true, | |
5428 | we should really always find the section here. */ | |
5429 | struct obj_section *section = find_pc_section (pc); | |
5430 | if (section) | |
5431 | { | |
5432 | struct gdbarch *gdbarch | |
5433 | = get_objfile_arch (section->objfile); | |
5434 | expanded.sals[i].pc | |
5435 | = gdbarch_skip_prologue (gdbarch, pc); | |
5436 | } | |
5437 | } | |
ed0616c6 VP |
5438 | } |
5439 | } | |
5440 | } | |
5441 | } | |
3daf8fe5 JG |
5442 | else |
5443 | { | |
5444 | for (i = 0; i < expanded.nelts; ++i) | |
5445 | { | |
5446 | /* If this SAL corresponds to a breakpoint inserted using a | |
5447 | line number, then skip the function prologue if necessary. */ | |
5448 | skip_prologue_sal (&expanded.sals[i]); | |
5449 | } | |
5450 | } | |
ed0616c6 VP |
5451 | |
5452 | ||
5453 | if (expanded.nelts <= 1) | |
5454 | { | |
5455 | /* This is un ugly workaround. If we get zero | |
5456 | expanded sals then something is really wrong. | |
5457 | Fix that by returnign the original sal. */ | |
5458 | xfree (expanded.sals); | |
5459 | expanded.nelts = 1; | |
5460 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5461 | sal.pc = original_pc; | |
5462 | expanded.sals[0] = sal; | |
5463 | return expanded; | |
5464 | } | |
5465 | ||
5466 | if (original_pc) | |
5467 | { | |
5468 | found = 0; | |
5469 | for (i = 0; i < expanded.nelts; ++i) | |
5470 | if (expanded.sals[i].pc == original_pc) | |
5471 | { | |
5472 | found = 1; | |
5473 | break; | |
5474 | } | |
5475 | gdb_assert (found); | |
5476 | } | |
5477 | ||
5478 | return expanded; | |
5479 | } | |
5480 | ||
018d34a4 VP |
5481 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
5482 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
5483 | value. COND_STRING, if not NULL, specified the condition to be | |
5484 | used for all breakpoints. Essentially the only case where | |
5485 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
5486 | function. In that case, it's still not possible to specify | |
5487 | separate conditions for different overloaded functions, so | |
5488 | we take just a single condition string. | |
5489 | ||
c3f6f71d | 5490 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 5491 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
5492 | array contents). If the function fails (error() is called), the |
5493 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
5494 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
5495 | |
5496 | static void | |
c3f6f71d | 5497 | create_breakpoints (struct symtabs_and_lines sals, char **addr_string, |
018d34a4 | 5498 | char *cond_string, |
c3f6f71d | 5499 | enum bptype type, enum bpdisp disposition, |
4a306c9a | 5500 | int thread, int task, int ignore_count, |
41447f92 VP |
5501 | struct breakpoint_ops *ops, int from_tty, |
5502 | int enabled) | |
c906108c | 5503 | { |
018d34a4 VP |
5504 | int i; |
5505 | for (i = 0; i < sals.nelts; ++i) | |
c3f6f71d | 5506 | { |
ed0616c6 VP |
5507 | struct symtabs_and_lines expanded = |
5508 | expand_line_sal_maybe (sals.sals[i]); | |
0d381245 | 5509 | |
ed0616c6 | 5510 | create_breakpoint (expanded, addr_string[i], |
018d34a4 | 5511 | cond_string, type, disposition, |
4a306c9a | 5512 | thread, task, ignore_count, ops, from_tty, enabled); |
c3f6f71d | 5513 | } |
c3f6f71d | 5514 | } |
c906108c | 5515 | |
c3f6f71d JM |
5516 | /* Parse ARG which is assumed to be a SAL specification possibly |
5517 | followed by conditionals. On return, SALS contains an array of SAL | |
5518 | addresses found. ADDR_STRING contains a vector of (canonical) | |
5519 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 5520 | |
b9362cc7 | 5521 | static void |
c3f6f71d JM |
5522 | parse_breakpoint_sals (char **address, |
5523 | struct symtabs_and_lines *sals, | |
0101ce28 JJ |
5524 | char ***addr_string, |
5525 | int *not_found_ptr) | |
c3f6f71d JM |
5526 | { |
5527 | char *addr_start = *address; | |
5528 | *addr_string = NULL; | |
5529 | /* If no arg given, or if first arg is 'if ', use the default | |
5530 | breakpoint. */ | |
5531 | if ((*address) == NULL | |
5532 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
5533 | { |
5534 | if (default_breakpoint_valid) | |
5535 | { | |
c3f6f71d | 5536 | struct symtab_and_line sal; |
fe39c653 | 5537 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 5538 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
5539 | xmalloc (sizeof (struct symtab_and_line)); |
5540 | sal.pc = default_breakpoint_address; | |
5541 | sal.line = default_breakpoint_line; | |
5542 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 5543 | sal.section = find_pc_overlay (sal.pc); |
00903456 JK |
5544 | |
5545 | /* "break" without arguments is equivalent to "break *PC" where PC is | |
5546 | the default_breakpoint_address. So make sure to set | |
5547 | sal.explicit_pc to prevent GDB from trying to expand the list of | |
5548 | sals to include all other instances with the same symtab and line. | |
5549 | */ | |
5550 | sal.explicit_pc = 1; | |
5551 | ||
c3f6f71d JM |
5552 | sals->sals[0] = sal; |
5553 | sals->nelts = 1; | |
c906108c SS |
5554 | } |
5555 | else | |
8a3fe4f8 | 5556 | error (_("No default breakpoint address now.")); |
c906108c SS |
5557 | } |
5558 | else | |
5559 | { | |
c906108c | 5560 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
5561 | current_source_symtab (which is decode_line_1's default). This |
5562 | should produce the results we want almost all of the time while | |
1aeae86e AF |
5563 | leaving default_breakpoint_* alone. |
5564 | ObjC: However, don't match an Objective-C method name which | |
5565 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 5566 | |
c214a6fd | 5567 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 5568 | |
c906108c | 5569 | if (default_breakpoint_valid |
0378c332 | 5570 | && (!cursal.symtab |
1aeae86e AF |
5571 | || ((strchr ("+-", (*address)[0]) != NULL) |
5572 | && ((*address)[1] != '[')))) | |
c3f6f71d | 5573 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
0101ce28 JJ |
5574 | default_breakpoint_line, addr_string, |
5575 | not_found_ptr); | |
c906108c | 5576 | else |
0101ce28 JJ |
5577 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
5578 | addr_string, not_found_ptr); | |
c906108c | 5579 | } |
c3f6f71d JM |
5580 | /* For any SAL that didn't have a canonical string, fill one in. */ |
5581 | if (sals->nelts > 0 && *addr_string == NULL) | |
5582 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
5583 | if (addr_start != (*address)) | |
c906108c | 5584 | { |
c3f6f71d JM |
5585 | int i; |
5586 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 5587 | { |
c3f6f71d JM |
5588 | /* Add the string if not present. */ |
5589 | if ((*addr_string)[i] == NULL) | |
5590 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
5591 | } |
5592 | } | |
c3f6f71d | 5593 | } |
c906108c | 5594 | |
c906108c | 5595 | |
c3f6f71d JM |
5596 | /* Convert each SAL into a real PC. Verify that the PC can be |
5597 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 5598 | |
b9362cc7 | 5599 | static void |
c3f6f71d JM |
5600 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, |
5601 | char *address) | |
5602 | { | |
5603 | int i; | |
5604 | for (i = 0; i < sals->nelts; i++) | |
ee53e872 | 5605 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
5606 | } |
5607 | ||
05ff989b | 5608 | static void |
0101ce28 JJ |
5609 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) |
5610 | { | |
5611 | struct captured_parse_breakpoint_args *args = data; | |
5612 | ||
5613 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p, | |
5614 | args->not_found_ptr); | |
0101ce28 JJ |
5615 | } |
5616 | ||
018d34a4 VP |
5617 | /* Given TOK, a string specification of condition and thread, as |
5618 | accepted by the 'break' command, extract the condition | |
5619 | string and thread number and set *COND_STRING and *THREAD. | |
5620 | PC identifies the context at which the condition should be parsed. | |
5621 | If no condition is found, *COND_STRING is set to NULL. | |
5622 | If no thread is found, *THREAD is set to -1. */ | |
5623 | static void | |
5624 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
4a306c9a | 5625 | char **cond_string, int *thread, int *task) |
018d34a4 VP |
5626 | { |
5627 | *cond_string = NULL; | |
5628 | *thread = -1; | |
5629 | while (tok && *tok) | |
5630 | { | |
5631 | char *end_tok; | |
5632 | int toklen; | |
5633 | char *cond_start = NULL; | |
5634 | char *cond_end = NULL; | |
5635 | while (*tok == ' ' || *tok == '\t') | |
5636 | tok++; | |
5637 | ||
5638 | end_tok = tok; | |
5639 | ||
5640 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5641 | end_tok++; | |
5642 | ||
5643 | toklen = end_tok - tok; | |
5644 | ||
5645 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5646 | { | |
f7545552 TT |
5647 | struct expression *expr; |
5648 | ||
018d34a4 | 5649 | tok = cond_start = end_tok + 1; |
f7545552 TT |
5650 | expr = parse_exp_1 (&tok, block_for_pc (pc), 0); |
5651 | xfree (expr); | |
018d34a4 VP |
5652 | cond_end = tok; |
5653 | *cond_string = savestring (cond_start, | |
5654 | cond_end - cond_start); | |
5655 | } | |
5656 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5657 | { | |
5658 | char *tmptok; | |
5659 | ||
5660 | tok = end_tok + 1; | |
5661 | tmptok = tok; | |
5662 | *thread = strtol (tok, &tok, 0); | |
5663 | if (tok == tmptok) | |
5664 | error (_("Junk after thread keyword.")); | |
5665 | if (!valid_thread_id (*thread)) | |
5666 | error (_("Unknown thread %d."), *thread); | |
5667 | } | |
4a306c9a JB |
5668 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
5669 | { | |
5670 | char *tmptok; | |
5671 | ||
5672 | tok = end_tok + 1; | |
5673 | tmptok = tok; | |
5674 | *task = strtol (tok, &tok, 0); | |
5675 | if (tok == tmptok) | |
5676 | error (_("Junk after task keyword.")); | |
5677 | if (!valid_task_id (*task)) | |
5678 | error (_("Unknown task %d\n"), *task); | |
5679 | } | |
018d34a4 VP |
5680 | else |
5681 | error (_("Junk at end of arguments.")); | |
5682 | } | |
5683 | } | |
5684 | ||
72b2ff0e VP |
5685 | /* Set a breakpoint. This function is shared between |
5686 | CLI and MI functions for setting a breakpoint. | |
5687 | This function has two major modes of operations, | |
5688 | selected by the PARSE_CONDITION_AND_THREAD parameter. | |
5689 | If non-zero, the function will parse arg, extracting | |
5690 | breakpoint location, address and thread. Otherwise, | |
5691 | ARG is just the location of breakpoint, with condition | |
5692 | and thread specified by the COND_STRING and THREAD | |
5693 | parameters. */ | |
0101ce28 | 5694 | |
98deb0da | 5695 | static void |
72b2ff0e | 5696 | break_command_really (char *arg, char *cond_string, int thread, |
60c46647 | 5697 | int parse_condition_and_thread, |
1042e4c0 | 5698 | int tempflag, int hardwareflag, int traceflag, |
60c46647 VP |
5699 | int ignore_count, |
5700 | enum auto_boolean pending_break_support, | |
604133b5 | 5701 | struct breakpoint_ops *ops, |
41447f92 VP |
5702 | int from_tty, |
5703 | int enabled) | |
c3f6f71d | 5704 | { |
71fff37b | 5705 | struct gdb_exception e; |
c3f6f71d | 5706 | struct symtabs_and_lines sals; |
0101ce28 | 5707 | struct symtab_and_line pending_sal; |
0101ce28 JJ |
5708 | char *copy_arg; |
5709 | char *err_msg; | |
c3f6f71d JM |
5710 | char *addr_start = arg; |
5711 | char **addr_string; | |
5712 | struct cleanup *old_chain; | |
80c99de1 | 5713 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 5714 | struct captured_parse_breakpoint_args parse_args; |
05ff989b | 5715 | int i; |
0101ce28 | 5716 | int pending = 0; |
0101ce28 | 5717 | int not_found = 0; |
1042e4c0 | 5718 | enum bptype type_wanted; |
4a306c9a | 5719 | int task = 0; |
c3f6f71d | 5720 | |
c3f6f71d JM |
5721 | sals.sals = NULL; |
5722 | sals.nelts = 0; | |
5723 | addr_string = NULL; | |
c3f6f71d | 5724 | |
0101ce28 JJ |
5725 | parse_args.arg_p = &arg; |
5726 | parse_args.sals_p = &sals; | |
5727 | parse_args.addr_string_p = &addr_string; | |
5728 | parse_args.not_found_ptr = ¬_found; | |
5729 | ||
05ff989b AC |
5730 | e = catch_exception (uiout, do_captured_parse_breakpoint, |
5731 | &parse_args, RETURN_MASK_ALL); | |
0101ce28 JJ |
5732 | |
5733 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 5734 | switch (e.reason) |
0101ce28 | 5735 | { |
05ff989b | 5736 | case RETURN_QUIT: |
98deb0da | 5737 | throw_exception (e); |
05ff989b AC |
5738 | case RETURN_ERROR: |
5739 | switch (e.error) | |
0101ce28 | 5740 | { |
05ff989b | 5741 | case NOT_FOUND_ERROR: |
0101ce28 | 5742 | |
05ff989b AC |
5743 | /* If pending breakpoint support is turned off, throw |
5744 | error. */ | |
fa8d40ab JJ |
5745 | |
5746 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
5747 | throw_exception (e); |
5748 | ||
5749 | exception_print (gdb_stderr, e); | |
fa8d40ab | 5750 | |
05ff989b AC |
5751 | /* If pending breakpoint support is auto query and the user |
5752 | selects no, then simply return the error code. */ | |
059fb39f PM |
5753 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
5754 | && !nquery ("Make breakpoint pending on future shared library load? ")) | |
98deb0da | 5755 | return; |
fa8d40ab | 5756 | |
05ff989b AC |
5757 | /* At this point, either the user was queried about setting |
5758 | a pending breakpoint and selected yes, or pending | |
5759 | breakpoint behavior is on and thus a pending breakpoint | |
5760 | is defaulted on behalf of the user. */ | |
0101ce28 JJ |
5761 | copy_arg = xstrdup (addr_start); |
5762 | addr_string = ©_arg; | |
5763 | sals.nelts = 1; | |
5764 | sals.sals = &pending_sal; | |
5765 | pending_sal.pc = 0; | |
5766 | pending = 1; | |
05ff989b AC |
5767 | break; |
5768 | default: | |
98deb0da | 5769 | throw_exception (e); |
0101ce28 | 5770 | } |
05ff989b AC |
5771 | default: |
5772 | if (!sals.nelts) | |
98deb0da | 5773 | return; |
0101ce28 | 5774 | } |
c3f6f71d JM |
5775 | |
5776 | /* Create a chain of things that always need to be cleaned up. */ | |
5777 | old_chain = make_cleanup (null_cleanup, 0); | |
5778 | ||
0101ce28 JJ |
5779 | if (!pending) |
5780 | { | |
5781 | /* Make sure that all storage allocated to SALS gets freed. */ | |
5782 | make_cleanup (xfree, sals.sals); | |
5783 | ||
5784 | /* Cleanup the addr_string array but not its contents. */ | |
5785 | make_cleanup (xfree, addr_string); | |
5786 | } | |
c3f6f71d | 5787 | |
c3f6f71d JM |
5788 | /* ----------------------------- SNIP ----------------------------- |
5789 | Anything added to the cleanup chain beyond this point is assumed | |
5790 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
5791 | then the memory is not reclaimed. */ |
5792 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d JM |
5793 | |
5794 | /* Mark the contents of the addr_string for cleanup. These go on | |
80c99de1 | 5795 | the bkpt_chain and only occur if the breakpoint create fails. */ |
c3f6f71d JM |
5796 | for (i = 0; i < sals.nelts; i++) |
5797 | { | |
5798 | if (addr_string[i] != NULL) | |
b8c9b27d | 5799 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
5800 | } |
5801 | ||
5802 | /* Resolve all line numbers to PC's and verify that the addresses | |
5803 | are ok for the target. */ | |
0101ce28 JJ |
5804 | if (!pending) |
5805 | breakpoint_sals_to_pc (&sals, addr_start); | |
c3f6f71d | 5806 | |
1042e4c0 SS |
5807 | type_wanted = (traceflag |
5808 | ? bp_tracepoint | |
5809 | : (hardwareflag ? bp_hardware_breakpoint : bp_breakpoint)); | |
5810 | ||
c3f6f71d JM |
5811 | /* Verify that condition can be parsed, before setting any |
5812 | breakpoints. Allocate a separate condition expression for each | |
5813 | breakpoint. */ | |
0101ce28 | 5814 | if (!pending) |
c3f6f71d | 5815 | { |
2f069f6f | 5816 | if (parse_condition_and_thread) |
72b2ff0e VP |
5817 | { |
5818 | /* Here we only parse 'arg' to separate condition | |
5819 | from thread number, so parsing in context of first | |
5820 | sal is OK. When setting the breakpoint we'll | |
5821 | re-parse it in context of each sal. */ | |
5822 | cond_string = NULL; | |
5823 | thread = -1; | |
4a306c9a JB |
5824 | find_condition_and_thread (arg, sals.sals[0].pc, &cond_string, |
5825 | &thread, &task); | |
72b2ff0e VP |
5826 | if (cond_string) |
5827 | make_cleanup (xfree, cond_string); | |
5828 | } | |
2f069f6f | 5829 | else |
72b2ff0e VP |
5830 | { |
5831 | /* Create a private copy of condition string. */ | |
5832 | if (cond_string) | |
5833 | { | |
5834 | cond_string = xstrdup (cond_string); | |
5835 | make_cleanup (xfree, cond_string); | |
5836 | } | |
5837 | } | |
1042e4c0 | 5838 | create_breakpoints (sals, addr_string, cond_string, type_wanted, |
0101ce28 | 5839 | tempflag ? disp_del : disp_donttouch, |
4a306c9a | 5840 | thread, task, ignore_count, ops, from_tty, enabled); |
c906108c | 5841 | } |
0101ce28 JJ |
5842 | else |
5843 | { | |
fe3f5fa8 | 5844 | struct symtab_and_line sal = {0}; |
0101ce28 JJ |
5845 | struct breakpoint *b; |
5846 | ||
0101ce28 JJ |
5847 | make_cleanup (xfree, copy_arg); |
5848 | ||
1042e4c0 | 5849 | b = set_raw_breakpoint_without_location (type_wanted); |
0101ce28 JJ |
5850 | set_breakpoint_count (breakpoint_count + 1); |
5851 | b->number = breakpoint_count; | |
72b2ff0e | 5852 | b->thread = -1; |
018d34a4 | 5853 | b->addr_string = addr_string[0]; |
72b2ff0e | 5854 | b->cond_string = NULL; |
0101ce28 | 5855 | b->ignore_count = ignore_count; |
0101ce28 | 5856 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 5857 | b->condition_not_parsed = 1; |
604133b5 | 5858 | b->ops = ops; |
41447f92 | 5859 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
74960c60 | 5860 | |
0101ce28 JJ |
5861 | mention (b); |
5862 | } | |
5863 | ||
c3f6f71d | 5864 | if (sals.nelts > 1) |
8a3fe4f8 AC |
5865 | warning (_("Multiple breakpoints were set.\n" |
5866 | "Use the \"delete\" command to delete unwanted breakpoints.")); | |
80c99de1 PA |
5867 | /* That's it. Discard the cleanups for data inserted into the |
5868 | breakpoint. */ | |
5869 | discard_cleanups (bkpt_chain); | |
5870 | /* But cleanup everything else. */ | |
c3f6f71d | 5871 | do_cleanups (old_chain); |
217dc9e2 | 5872 | |
80c99de1 | 5873 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
217dc9e2 | 5874 | update_global_location_list (1); |
c3f6f71d | 5875 | } |
c906108c | 5876 | |
72b2ff0e VP |
5877 | /* Set a breakpoint. |
5878 | ARG is a string describing breakpoint address, | |
5879 | condition, and thread. | |
5880 | FLAG specifies if a breakpoint is hardware on, | |
5881 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
5882 | and BP_TEMPFLAG. */ | |
5883 | ||
98deb0da | 5884 | static void |
72b2ff0e | 5885 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 5886 | { |
72b2ff0e VP |
5887 | int hardwareflag = flag & BP_HARDWAREFLAG; |
5888 | int tempflag = flag & BP_TEMPFLAG; | |
c3f6f71d | 5889 | |
98deb0da VP |
5890 | break_command_really (arg, |
5891 | NULL, 0, 1 /* parse arg */, | |
1042e4c0 | 5892 | tempflag, hardwareflag, 0 /* traceflag */, |
98deb0da | 5893 | 0 /* Ignore count */, |
604133b5 AR |
5894 | pending_break_support, |
5895 | NULL /* breakpoint_ops */, | |
41447f92 VP |
5896 | from_tty, |
5897 | 1 /* enabled */); | |
c906108c SS |
5898 | } |
5899 | ||
72b2ff0e | 5900 | |
98deb0da VP |
5901 | void |
5902 | set_breakpoint (char *address, char *condition, | |
c3f6f71d | 5903 | int hardwareflag, int tempflag, |
ce43223b | 5904 | int thread, int ignore_count, |
41447f92 | 5905 | int pending, int enabled) |
c3f6f71d | 5906 | { |
98deb0da VP |
5907 | break_command_really (address, condition, thread, |
5908 | 0 /* condition and thread are valid. */, | |
1042e4c0 | 5909 | tempflag, hardwareflag, 0 /* traceflag */, |
98deb0da VP |
5910 | ignore_count, |
5911 | pending | |
5912 | ? AUTO_BOOLEAN_TRUE : AUTO_BOOLEAN_FALSE, | |
41447f92 | 5913 | NULL, 0, enabled); |
c3f6f71d JM |
5914 | } |
5915 | ||
6a048695 JB |
5916 | /* Adjust SAL to the first instruction past the function prologue. |
5917 | The end of the prologue is determined using the line table from | |
3daf8fe5 JG |
5918 | the debugging information. explicit_pc and explicit_line are |
5919 | not modified. | |
6a048695 JB |
5920 | |
5921 | If SAL is already past the prologue, then do nothing. */ | |
5922 | ||
5923 | static void | |
5924 | skip_prologue_sal (struct symtab_and_line *sal) | |
5925 | { | |
5926 | struct symbol *sym = find_pc_function (sal->pc); | |
5927 | struct symtab_and_line start_sal; | |
5928 | ||
5929 | if (sym == NULL) | |
5930 | return; | |
5931 | ||
5932 | start_sal = find_function_start_sal (sym, 1); | |
5933 | if (sal->pc < start_sal.pc) | |
3daf8fe5 JG |
5934 | { |
5935 | start_sal.explicit_line = sal->explicit_line; | |
5936 | start_sal.explicit_pc = sal->explicit_pc; | |
5937 | *sal = start_sal; | |
5938 | } | |
6a048695 | 5939 | } |
c3f6f71d | 5940 | |
c906108c SS |
5941 | /* Helper function for break_command_1 and disassemble_command. */ |
5942 | ||
5943 | void | |
fba45db2 | 5944 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
5945 | { |
5946 | CORE_ADDR pc; | |
5947 | ||
5948 | if (sal->pc == 0 && sal->symtab != NULL) | |
5949 | { | |
5950 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 5951 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
5952 | sal->line, sal->symtab->filename); |
5953 | sal->pc = pc; | |
6a048695 JB |
5954 | |
5955 | /* If this SAL corresponds to a breakpoint inserted using | |
5956 | a line number, then skip the function prologue if necessary. */ | |
5957 | if (sal->explicit_line) | |
56ef84b1 TT |
5958 | { |
5959 | /* Preserve the original line number. */ | |
5960 | int saved_line = sal->line; | |
5961 | skip_prologue_sal (sal); | |
5962 | sal->line = saved_line; | |
5963 | } | |
c906108c SS |
5964 | } |
5965 | ||
5966 | if (sal->section == 0 && sal->symtab != NULL) | |
5967 | { | |
5968 | struct blockvector *bv; | |
c5aa993b JM |
5969 | struct block *b; |
5970 | struct symbol *sym; | |
c906108c | 5971 | |
801e3a5b | 5972 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
5973 | if (bv != NULL) |
5974 | { | |
7f0df278 | 5975 | sym = block_linkage_function (b); |
c906108c SS |
5976 | if (sym != NULL) |
5977 | { | |
5978 | fixup_symbol_section (sym, sal->symtab->objfile); | |
714835d5 | 5979 | sal->section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
5980 | } |
5981 | else | |
5982 | { | |
5983 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
5984 | have to look harder. This case can be executed if we have |
5985 | line numbers but no functions (as can happen in assembly | |
5986 | source). */ | |
c906108c | 5987 | |
c5aa993b | 5988 | struct minimal_symbol *msym; |
c906108c SS |
5989 | |
5990 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
5991 | if (msym) | |
714835d5 | 5992 | sal->section = SYMBOL_OBJ_SECTION (msym); |
c906108c SS |
5993 | } |
5994 | } | |
5995 | } | |
5996 | } | |
5997 | ||
5998 | void | |
fba45db2 | 5999 | break_command (char *arg, int from_tty) |
c906108c | 6000 | { |
db107f19 | 6001 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
6002 | } |
6003 | ||
c906108c | 6004 | void |
fba45db2 | 6005 | tbreak_command (char *arg, int from_tty) |
c906108c | 6006 | { |
db107f19 | 6007 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
6008 | } |
6009 | ||
c906108c | 6010 | static void |
fba45db2 | 6011 | hbreak_command (char *arg, int from_tty) |
c906108c | 6012 | { |
db107f19 | 6013 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
6014 | } |
6015 | ||
6016 | static void | |
fba45db2 | 6017 | thbreak_command (char *arg, int from_tty) |
c906108c | 6018 | { |
db107f19 | 6019 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
6020 | } |
6021 | ||
6022 | static void | |
fba45db2 | 6023 | stop_command (char *arg, int from_tty) |
c906108c | 6024 | { |
a3f17187 | 6025 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 6026 | Usage: stop in <function | address>\n\ |
a3f17187 | 6027 | stop at <line>\n")); |
c906108c SS |
6028 | } |
6029 | ||
6030 | static void | |
fba45db2 | 6031 | stopin_command (char *arg, int from_tty) |
c906108c SS |
6032 | { |
6033 | int badInput = 0; | |
6034 | ||
c5aa993b | 6035 | if (arg == (char *) NULL) |
c906108c SS |
6036 | badInput = 1; |
6037 | else if (*arg != '*') | |
6038 | { | |
6039 | char *argptr = arg; | |
6040 | int hasColon = 0; | |
6041 | ||
53a5351d JM |
6042 | /* look for a ':'. If this is a line number specification, then |
6043 | say it is bad, otherwise, it should be an address or | |
6044 | function/method name */ | |
c906108c | 6045 | while (*argptr && !hasColon) |
c5aa993b JM |
6046 | { |
6047 | hasColon = (*argptr == ':'); | |
6048 | argptr++; | |
6049 | } | |
c906108c SS |
6050 | |
6051 | if (hasColon) | |
c5aa993b | 6052 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 6053 | else |
c5aa993b | 6054 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
6055 | } |
6056 | ||
6057 | if (badInput) | |
a3f17187 | 6058 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 6059 | else |
db107f19 | 6060 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
6061 | } |
6062 | ||
6063 | static void | |
fba45db2 | 6064 | stopat_command (char *arg, int from_tty) |
c906108c SS |
6065 | { |
6066 | int badInput = 0; | |
6067 | ||
c5aa993b | 6068 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
6069 | badInput = 1; |
6070 | else | |
6071 | { | |
6072 | char *argptr = arg; | |
6073 | int hasColon = 0; | |
6074 | ||
6075 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 6076 | it is probably a line number. */ |
c906108c | 6077 | while (*argptr && !hasColon) |
c5aa993b JM |
6078 | { |
6079 | hasColon = (*argptr == ':'); | |
6080 | argptr++; | |
6081 | } | |
c906108c SS |
6082 | |
6083 | if (hasColon) | |
c5aa993b | 6084 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 6085 | else |
c5aa993b | 6086 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
6087 | } |
6088 | ||
6089 | if (badInput) | |
a3f17187 | 6090 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 6091 | else |
db107f19 | 6092 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
6093 | } |
6094 | ||
53a5351d JM |
6095 | /* accessflag: hw_write: watch write, |
6096 | hw_read: watch read, | |
6097 | hw_access: watch access (read or write) */ | |
c906108c | 6098 | static void |
fba45db2 | 6099 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c | 6100 | { |
d983da9c | 6101 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c SS |
6102 | struct symtab_and_line sal; |
6103 | struct expression *exp; | |
6104 | struct block *exp_valid_block; | |
6105 | struct value *val, *mark; | |
6106 | struct frame_info *frame; | |
6107 | struct frame_info *prev_frame = NULL; | |
6108 | char *exp_start = NULL; | |
6109 | char *exp_end = NULL; | |
37e4754d | 6110 | char *tok, *id_tok_start, *end_tok; |
c906108c SS |
6111 | int toklen; |
6112 | char *cond_start = NULL; | |
6113 | char *cond_end = NULL; | |
6114 | struct expression *cond = NULL; | |
6115 | int i, other_type_used, target_resources_ok = 0; | |
6116 | enum bptype bp_type; | |
6117 | int mem_cnt = 0; | |
37e4754d | 6118 | int thread = -1; |
c906108c | 6119 | |
fe39c653 | 6120 | init_sal (&sal); /* initialize to zeroes */ |
c5aa993b | 6121 | |
37e4754d LM |
6122 | /* Make sure that we actually have parameters to parse. */ |
6123 | if (arg != NULL && arg[0] != '\0') | |
6124 | { | |
6125 | toklen = strlen (arg); /* Size of argument list. */ | |
6126 | ||
6127 | /* Points tok to the end of the argument list. */ | |
6128 | tok = arg + toklen - 1; | |
6129 | ||
6130 | /* Go backwards in the parameters list. Skip the last parameter. | |
6131 | If we're expecting a 'thread <thread_num>' parameter, this should | |
6132 | be the thread identifier. */ | |
6133 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
6134 | tok--; | |
6135 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
6136 | tok--; | |
6137 | ||
6138 | /* Points end_tok to the beginning of the last token. */ | |
6139 | id_tok_start = tok + 1; | |
6140 | ||
6141 | /* Go backwards in the parameters list. Skip one more parameter. | |
6142 | If we're expecting a 'thread <thread_num>' parameter, we should | |
6143 | reach a "thread" token. */ | |
6144 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
6145 | tok--; | |
6146 | ||
6147 | end_tok = tok; | |
6148 | ||
6149 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
6150 | tok--; | |
6151 | ||
6152 | /* Move the pointer forward to skip the whitespace and | |
6153 | calculate the length of the token. */ | |
6154 | tok++; | |
6155 | toklen = end_tok - tok; | |
6156 | ||
6157 | if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
6158 | { | |
6159 | /* At this point we've found a "thread" token, which means | |
6160 | the user is trying to set a watchpoint that triggers | |
6161 | only in a specific thread. */ | |
6162 | char *endp; | |
6163 | ||
6164 | /* Extract the thread ID from the next token. */ | |
6165 | thread = strtol (id_tok_start, &endp, 0); | |
6166 | ||
6167 | /* Check if the user provided a valid numeric value for the | |
6168 | thread ID. */ | |
6169 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
6170 | error (_("Invalid thread ID specification %s."), id_tok_start); | |
6171 | ||
6172 | /* Check if the thread actually exists. */ | |
6173 | if (!valid_thread_id (thread)) | |
6174 | error (_("Unknown thread %d."), thread); | |
6175 | ||
6176 | /* Truncate the string and get rid of the thread <thread_num> | |
6177 | parameter before the parameter list is parsed by the | |
6178 | evaluate_expression() function. */ | |
6179 | *tok = '\0'; | |
6180 | } | |
6181 | } | |
6182 | ||
6183 | /* Parse the rest of the arguments. */ | |
c906108c SS |
6184 | innermost_block = NULL; |
6185 | exp_start = arg; | |
6186 | exp = parse_exp_1 (&arg, 0, 0); | |
6187 | exp_end = arg; | |
fa8a61dc TT |
6188 | /* Remove trailing whitespace from the expression before saving it. |
6189 | This makes the eventual display of the expression string a bit | |
6190 | prettier. */ | |
6191 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
6192 | --exp_end; | |
6193 | ||
c906108c SS |
6194 | exp_valid_block = innermost_block; |
6195 | mark = value_mark (); | |
fa4727a6 DJ |
6196 | fetch_watchpoint_value (exp, &val, NULL, NULL); |
6197 | if (val != NULL) | |
6198 | release_value (val); | |
c906108c SS |
6199 | |
6200 | tok = arg; | |
6201 | while (*tok == ' ' || *tok == '\t') | |
6202 | tok++; | |
6203 | end_tok = tok; | |
6204 | ||
6205 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
6206 | end_tok++; | |
6207 | ||
6208 | toklen = end_tok - tok; | |
6209 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
6210 | { | |
6211 | tok = cond_start = end_tok + 1; | |
6212 | cond = parse_exp_1 (&tok, 0, 0); | |
6213 | cond_end = tok; | |
6214 | } | |
6215 | if (*tok) | |
8a3fe4f8 | 6216 | error (_("Junk at end of command.")); |
c906108c | 6217 | |
53a5351d | 6218 | if (accessflag == hw_read) |
c5aa993b | 6219 | bp_type = bp_read_watchpoint; |
53a5351d | 6220 | else if (accessflag == hw_access) |
c5aa993b JM |
6221 | bp_type = bp_access_watchpoint; |
6222 | else | |
6223 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
6224 | |
6225 | mem_cnt = can_use_hardware_watchpoint (val); | |
6226 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
8a3fe4f8 | 6227 | error (_("Expression cannot be implemented with read/access watchpoint.")); |
c5aa993b JM |
6228 | if (mem_cnt != 0) |
6229 | { | |
6230 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d | 6231 | target_resources_ok = |
d92524f1 | 6232 | target_can_use_hardware_watchpoint (bp_type, i + mem_cnt, |
53a5351d | 6233 | other_type_used); |
c5aa993b | 6234 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 6235 | error (_("Target does not support this type of hardware watchpoint.")); |
53a5351d | 6236 | |
c5aa993b | 6237 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 6238 | error (_("Target can only support one kind of HW watchpoint at a time.")); |
c5aa993b | 6239 | } |
c906108c | 6240 | |
4d28f7a8 KB |
6241 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
6242 | watchpoint could not be set. */ | |
6243 | if (!mem_cnt || target_resources_ok <= 0) | |
6244 | bp_type = bp_watchpoint; | |
6245 | ||
d983da9c DJ |
6246 | frame = block_innermost_frame (exp_valid_block); |
6247 | if (frame) | |
6248 | prev_frame = get_prev_frame (frame); | |
6249 | else | |
6250 | prev_frame = NULL; | |
6251 | ||
6252 | /* If the expression is "local", then set up a "watchpoint scope" | |
6253 | breakpoint at the point where we've left the scope of the watchpoint | |
6254 | expression. Create the scope breakpoint before the watchpoint, so | |
6255 | that we will encounter it first in bpstat_stop_status. */ | |
6256 | if (innermost_block && prev_frame) | |
6257 | { | |
6258 | scope_breakpoint = create_internal_breakpoint (get_frame_pc (prev_frame), | |
6259 | bp_watchpoint_scope); | |
6260 | ||
6261 | scope_breakpoint->enable_state = bp_enabled; | |
6262 | ||
6263 | /* Automatically delete the breakpoint when it hits. */ | |
6264 | scope_breakpoint->disposition = disp_del; | |
6265 | ||
6266 | /* Only break in the proper frame (help with recursion). */ | |
6267 | scope_breakpoint->frame_id = get_frame_id (prev_frame); | |
6268 | ||
6269 | /* Set the address at which we will stop. */ | |
6270 | scope_breakpoint->loc->requested_address | |
6271 | = get_frame_pc (prev_frame); | |
6272 | scope_breakpoint->loc->address | |
6273 | = adjust_breakpoint_address (scope_breakpoint->loc->requested_address, | |
6274 | scope_breakpoint->type); | |
6275 | } | |
6276 | ||
c906108c | 6277 | /* Now set up the breakpoint. */ |
4d28f7a8 | 6278 | b = set_raw_breakpoint (sal, bp_type); |
c906108c SS |
6279 | set_breakpoint_count (breakpoint_count + 1); |
6280 | b->number = breakpoint_count; | |
37e4754d | 6281 | b->thread = thread; |
b5de0fa7 | 6282 | b->disposition = disp_donttouch; |
c906108c SS |
6283 | b->exp = exp; |
6284 | b->exp_valid_block = exp_valid_block; | |
6285 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
6286 | b->val = val; | |
fa4727a6 | 6287 | b->val_valid = 1; |
511a6cd4 | 6288 | b->loc->cond = cond; |
c906108c SS |
6289 | if (cond_start) |
6290 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
6291 | else | |
6292 | b->cond_string = 0; | |
c5aa993b | 6293 | |
c906108c | 6294 | if (frame) |
d983da9c | 6295 | b->watchpoint_frame = get_frame_id (frame); |
c906108c | 6296 | else |
35a487f1 | 6297 | b->watchpoint_frame = null_frame_id; |
c906108c | 6298 | |
d983da9c | 6299 | if (scope_breakpoint != NULL) |
c906108c | 6300 | { |
d983da9c DJ |
6301 | /* The scope breakpoint is related to the watchpoint. We will |
6302 | need to act on them together. */ | |
6303 | b->related_breakpoint = scope_breakpoint; | |
6304 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 6305 | } |
d983da9c | 6306 | |
c906108c SS |
6307 | value_free_to_mark (mark); |
6308 | mention (b); | |
b60e7edf | 6309 | update_global_location_list (1); |
c906108c SS |
6310 | } |
6311 | ||
6312 | /* Return count of locations need to be watched and can be handled | |
6313 | in hardware. If the watchpoint can not be handled | |
6314 | in hardware return zero. */ | |
6315 | ||
c906108c | 6316 | static int |
fba45db2 | 6317 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
6318 | { |
6319 | int found_memory_cnt = 0; | |
2e70b7b9 | 6320 | struct value *head = v; |
c906108c SS |
6321 | |
6322 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 6323 | if (!can_use_hw_watchpoints) |
c906108c | 6324 | return 0; |
c5aa993b | 6325 | |
5c44784c JM |
6326 | /* Make sure that the value of the expression depends only upon |
6327 | memory contents, and values computed from them within GDB. If we | |
6328 | find any register references or function calls, we can't use a | |
6329 | hardware watchpoint. | |
6330 | ||
6331 | The idea here is that evaluating an expression generates a series | |
6332 | of values, one holding the value of every subexpression. (The | |
6333 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
6334 | a*b+c.) GDB's values hold almost enough information to establish | |
6335 | the criteria given above --- they identify memory lvalues, | |
6336 | register lvalues, computed values, etcetera. So we can evaluate | |
6337 | the expression, and then scan the chain of values that leaves | |
6338 | behind to decide whether we can detect any possible change to the | |
6339 | expression's final value using only hardware watchpoints. | |
6340 | ||
6341 | However, I don't think that the values returned by inferior | |
6342 | function calls are special in any way. So this function may not | |
6343 | notice that an expression involving an inferior function call | |
6344 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 6345 | for (; v; v = value_next (v)) |
c906108c | 6346 | { |
5c44784c | 6347 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 6348 | { |
d69fe07e | 6349 | if (value_lazy (v)) |
5c44784c JM |
6350 | /* A lazy memory lvalue is one that GDB never needed to fetch; |
6351 | we either just used its address (e.g., `a' in `a.b') or | |
6352 | we never needed it at all (e.g., `a' in `a,b'). */ | |
6353 | ; | |
53a5351d | 6354 | else |
5c44784c JM |
6355 | { |
6356 | /* Ahh, memory we actually used! Check if we can cover | |
6357 | it with hardware watchpoints. */ | |
df407dfe | 6358 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
6359 | |
6360 | /* We only watch structs and arrays if user asked for it | |
6361 | explicitly, never if they just happen to appear in a | |
6362 | middle of some value chain. */ | |
6363 | if (v == head | |
6364 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
6365 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
6366 | { | |
42ae5230 | 6367 | CORE_ADDR vaddr = value_address (v); |
df407dfe | 6368 | int len = TYPE_LENGTH (value_type (v)); |
2e70b7b9 | 6369 | |
d92524f1 | 6370 | if (!target_region_ok_for_hw_watchpoint (vaddr, len)) |
2e70b7b9 MS |
6371 | return 0; |
6372 | else | |
6373 | found_memory_cnt++; | |
6374 | } | |
5c44784c | 6375 | } |
c5aa993b | 6376 | } |
5086187c AC |
6377 | else if (VALUE_LVAL (v) != not_lval |
6378 | && deprecated_value_modifiable (v) == 0) | |
53a5351d | 6379 | return 0; /* ??? What does this represent? */ |
5086187c | 6380 | else if (VALUE_LVAL (v) == lval_register) |
53a5351d | 6381 | return 0; /* cannot watch a register with a HW watchpoint */ |
c906108c SS |
6382 | } |
6383 | ||
6384 | /* The expression itself looks suitable for using a hardware | |
6385 | watchpoint, but give the target machine a chance to reject it. */ | |
6386 | return found_memory_cnt; | |
6387 | } | |
6388 | ||
8b93c638 | 6389 | void |
fba45db2 | 6390 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6391 | { |
6392 | watch_command (arg, from_tty); | |
6393 | } | |
8926118c | 6394 | |
c5aa993b | 6395 | static void |
fba45db2 | 6396 | watch_command (char *arg, int from_tty) |
c906108c | 6397 | { |
53a5351d | 6398 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
6399 | } |
6400 | ||
8b93c638 | 6401 | void |
fba45db2 | 6402 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6403 | { |
6404 | rwatch_command (arg, from_tty); | |
6405 | } | |
8926118c | 6406 | |
c5aa993b | 6407 | static void |
fba45db2 | 6408 | rwatch_command (char *arg, int from_tty) |
c906108c | 6409 | { |
53a5351d | 6410 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
6411 | } |
6412 | ||
8b93c638 | 6413 | void |
fba45db2 | 6414 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6415 | { |
6416 | awatch_command (arg, from_tty); | |
6417 | } | |
8926118c | 6418 | |
c5aa993b | 6419 | static void |
fba45db2 | 6420 | awatch_command (char *arg, int from_tty) |
c906108c | 6421 | { |
53a5351d | 6422 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 6423 | } |
c906108c | 6424 | \f |
c5aa993b | 6425 | |
43ff13b4 | 6426 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
6427 | because it uses the mechanisms of breakpoints. */ |
6428 | ||
bfec99b2 PA |
6429 | struct until_break_command_continuation_args |
6430 | { | |
6431 | struct breakpoint *breakpoint; | |
6432 | struct breakpoint *breakpoint2; | |
6433 | }; | |
6434 | ||
43ff13b4 JM |
6435 | /* This function is called by fetch_inferior_event via the |
6436 | cmd_continuation pointer, to complete the until command. It takes | |
6437 | care of cleaning up the temporary breakpoints set up by the until | |
6438 | command. */ | |
c2c6d25f | 6439 | static void |
604ead4a | 6440 | until_break_command_continuation (void *arg) |
43ff13b4 | 6441 | { |
bfec99b2 PA |
6442 | struct until_break_command_continuation_args *a = arg; |
6443 | ||
6444 | delete_breakpoint (a->breakpoint); | |
6445 | if (a->breakpoint2) | |
6446 | delete_breakpoint (a->breakpoint2); | |
43ff13b4 JM |
6447 | } |
6448 | ||
c906108c | 6449 | void |
ae66c1fc | 6450 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
6451 | { |
6452 | struct symtabs_and_lines sals; | |
6453 | struct symtab_and_line sal; | |
206415a3 DJ |
6454 | struct frame_info *frame = get_selected_frame (NULL); |
6455 | struct frame_info *prev_frame = get_prev_frame (frame); | |
c906108c | 6456 | struct breakpoint *breakpoint; |
f107f563 | 6457 | struct breakpoint *breakpoint2 = NULL; |
c906108c SS |
6458 | struct cleanup *old_chain; |
6459 | ||
6460 | clear_proceed_status (); | |
6461 | ||
6462 | /* Set a breakpoint where the user wants it and at return from | |
6463 | this function */ | |
c5aa993b | 6464 | |
c906108c SS |
6465 | if (default_breakpoint_valid) |
6466 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 6467 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 6468 | else |
53a5351d | 6469 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 6470 | 0, (char ***) NULL, NULL); |
c5aa993b | 6471 | |
c906108c | 6472 | if (sals.nelts != 1) |
8a3fe4f8 | 6473 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 6474 | |
c906108c | 6475 | sal = sals.sals[0]; |
b8c9b27d | 6476 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 6477 | |
c906108c | 6478 | if (*arg) |
8a3fe4f8 | 6479 | error (_("Junk at end of arguments.")); |
c5aa993b | 6480 | |
c906108c | 6481 | resolve_sal_pc (&sal); |
c5aa993b | 6482 | |
ae66c1fc EZ |
6483 | if (anywhere) |
6484 | /* If the user told us to continue until a specified location, | |
6485 | we don't specify a frame at which we need to stop. */ | |
6486 | breakpoint = set_momentary_breakpoint (sal, null_frame_id, bp_until); | |
6487 | else | |
6488 | /* Otherwise, specify the current frame, because we want to stop only | |
6489 | at the very same frame. */ | |
206415a3 | 6490 | breakpoint = set_momentary_breakpoint (sal, get_frame_id (frame), |
ae66c1fc | 6491 | bp_until); |
c5aa993b | 6492 | |
f107f563 | 6493 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
c906108c | 6494 | |
ae66c1fc EZ |
6495 | /* Keep within the current frame, or in frames called by the current |
6496 | one. */ | |
c906108c SS |
6497 | if (prev_frame) |
6498 | { | |
30f7db39 AC |
6499 | sal = find_pc_line (get_frame_pc (prev_frame), 0); |
6500 | sal.pc = get_frame_pc (prev_frame); | |
f107f563 VP |
6501 | breakpoint2 = set_momentary_breakpoint (sal, get_frame_id (prev_frame), |
6502 | bp_until); | |
6503 | make_cleanup_delete_breakpoint (breakpoint2); | |
c906108c | 6504 | } |
c5aa993b | 6505 | |
c906108c | 6506 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
f107f563 VP |
6507 | |
6508 | /* If we are running asynchronously, and proceed call above has actually | |
6509 | managed to start the target, arrange for breakpoints to be | |
6510 | deleted when the target stops. Otherwise, we're already stopped and | |
6511 | delete breakpoints via cleanup chain. */ | |
6512 | ||
8ea051c5 | 6513 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 6514 | { |
bfec99b2 PA |
6515 | struct until_break_command_continuation_args *args; |
6516 | args = xmalloc (sizeof (*args)); | |
f107f563 | 6517 | |
bfec99b2 PA |
6518 | args->breakpoint = breakpoint; |
6519 | args->breakpoint2 = breakpoint2; | |
f107f563 VP |
6520 | |
6521 | discard_cleanups (old_chain); | |
95e54da7 PA |
6522 | add_continuation (inferior_thread (), |
6523 | until_break_command_continuation, args, | |
604ead4a | 6524 | xfree); |
f107f563 VP |
6525 | } |
6526 | else | |
c5aa993b | 6527 | do_cleanups (old_chain); |
c906108c | 6528 | } |
ae66c1fc | 6529 | |
c906108c | 6530 | static void |
fba45db2 | 6531 | ep_skip_leading_whitespace (char **s) |
c906108c | 6532 | { |
c5aa993b JM |
6533 | if ((s == NULL) || (*s == NULL)) |
6534 | return; | |
6535 | while (isspace (**s)) | |
6536 | *s += 1; | |
c906108c | 6537 | } |
c5aa993b | 6538 | |
c906108c SS |
6539 | /* This function attempts to parse an optional "if <cond>" clause |
6540 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 6541 | |
c906108c SS |
6542 | Else, it returns a pointer to the condition string. (It does not |
6543 | attempt to evaluate the string against a particular block.) And, | |
6544 | it updates arg to point to the first character following the parsed | |
6545 | if clause in the arg string. */ | |
53a5351d | 6546 | |
c906108c | 6547 | static char * |
fba45db2 | 6548 | ep_parse_optional_if_clause (char **arg) |
c906108c | 6549 | { |
c5aa993b JM |
6550 | char *cond_string; |
6551 | ||
6552 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 6553 | return NULL; |
c5aa993b | 6554 | |
c906108c SS |
6555 | /* Skip the "if" keyword. */ |
6556 | (*arg) += 2; | |
c5aa993b | 6557 | |
c906108c SS |
6558 | /* Skip any extra leading whitespace, and record the start of the |
6559 | condition string. */ | |
6560 | ep_skip_leading_whitespace (arg); | |
6561 | cond_string = *arg; | |
c5aa993b | 6562 | |
c906108c SS |
6563 | /* Assume that the condition occupies the remainder of the arg string. */ |
6564 | (*arg) += strlen (cond_string); | |
c5aa993b | 6565 | |
c906108c SS |
6566 | return cond_string; |
6567 | } | |
c5aa993b | 6568 | |
c906108c SS |
6569 | /* This function attempts to parse an optional filename from the arg |
6570 | string. If one is not found, it returns NULL. | |
c5aa993b | 6571 | |
c906108c SS |
6572 | Else, it returns a pointer to the parsed filename. (This function |
6573 | makes no attempt to verify that a file of that name exists, or is | |
6574 | accessible.) And, it updates arg to point to the first character | |
6575 | following the parsed filename in the arg string. | |
c5aa993b | 6576 | |
c906108c SS |
6577 | Note that clients needing to preserve the returned filename for |
6578 | future access should copy it to their own buffers. */ | |
6579 | static char * | |
fba45db2 | 6580 | ep_parse_optional_filename (char **arg) |
c906108c | 6581 | { |
c5aa993b JM |
6582 | static char filename[1024]; |
6583 | char *arg_p = *arg; | |
6584 | int i; | |
6585 | char c; | |
6586 | ||
c906108c SS |
6587 | if ((*arg_p == '\0') || isspace (*arg_p)) |
6588 | return NULL; | |
c5aa993b JM |
6589 | |
6590 | for (i = 0;; i++) | |
c906108c SS |
6591 | { |
6592 | c = *arg_p; | |
6593 | if (isspace (c)) | |
c5aa993b | 6594 | c = '\0'; |
c906108c SS |
6595 | filename[i] = c; |
6596 | if (c == '\0') | |
c5aa993b | 6597 | break; |
c906108c SS |
6598 | arg_p++; |
6599 | } | |
6600 | *arg = arg_p; | |
c5aa993b | 6601 | |
c906108c SS |
6602 | return filename; |
6603 | } | |
c5aa993b | 6604 | |
c906108c SS |
6605 | /* Commands to deal with catching events, such as signals, exceptions, |
6606 | process start/exit, etc. */ | |
c5aa993b JM |
6607 | |
6608 | typedef enum | |
6609 | { | |
44feb3ce TT |
6610 | catch_fork_temporary, catch_vfork_temporary, |
6611 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
6612 | } |
6613 | catch_fork_kind; | |
6614 | ||
c906108c | 6615 | static void |
44feb3ce | 6616 | catch_fork_command_1 (char *arg, int from_tty, struct cmd_list_element *command) |
c906108c | 6617 | { |
c5aa993b | 6618 | char *cond_string = NULL; |
44feb3ce TT |
6619 | catch_fork_kind fork_kind; |
6620 | int tempflag; | |
6621 | ||
6622 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
6623 | tempflag = (fork_kind == catch_fork_temporary | |
6624 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 6625 | |
44feb3ce TT |
6626 | if (!arg) |
6627 | arg = ""; | |
c906108c | 6628 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6629 | |
c906108c | 6630 | /* The allowed syntax is: |
c5aa993b JM |
6631 | catch [v]fork |
6632 | catch [v]fork if <cond> | |
6633 | ||
c906108c SS |
6634 | First, check if there's an if clause. */ |
6635 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6636 | |
c906108c | 6637 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6638 | error (_("Junk at end of arguments.")); |
c5aa993b | 6639 | |
c906108c SS |
6640 | /* If this target supports it, create a fork or vfork catchpoint |
6641 | and enable reporting of such events. */ | |
c5aa993b JM |
6642 | switch (fork_kind) |
6643 | { | |
44feb3ce TT |
6644 | case catch_fork_temporary: |
6645 | case catch_fork_permanent: | |
ce78b96d JB |
6646 | create_fork_vfork_event_catchpoint (tempflag, cond_string, |
6647 | &catch_fork_breakpoint_ops); | |
c906108c | 6648 | break; |
44feb3ce TT |
6649 | case catch_vfork_temporary: |
6650 | case catch_vfork_permanent: | |
ce78b96d JB |
6651 | create_fork_vfork_event_catchpoint (tempflag, cond_string, |
6652 | &catch_vfork_breakpoint_ops); | |
c906108c | 6653 | break; |
c5aa993b | 6654 | default: |
8a3fe4f8 | 6655 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 6656 | break; |
c5aa993b | 6657 | } |
c906108c SS |
6658 | } |
6659 | ||
6660 | static void | |
44feb3ce | 6661 | catch_exec_command_1 (char *arg, int from_tty, struct cmd_list_element *command) |
c906108c | 6662 | { |
44feb3ce | 6663 | int tempflag; |
c5aa993b | 6664 | char *cond_string = NULL; |
c906108c | 6665 | |
44feb3ce TT |
6666 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
6667 | ||
6668 | if (!arg) | |
6669 | arg = ""; | |
c906108c SS |
6670 | ep_skip_leading_whitespace (&arg); |
6671 | ||
6672 | /* The allowed syntax is: | |
c5aa993b JM |
6673 | catch exec |
6674 | catch exec if <cond> | |
c906108c SS |
6675 | |
6676 | First, check if there's an if clause. */ | |
6677 | cond_string = ep_parse_optional_if_clause (&arg); | |
6678 | ||
6679 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6680 | error (_("Junk at end of arguments.")); |
c906108c SS |
6681 | |
6682 | /* If this target supports it, create an exec catchpoint | |
6683 | and enable reporting of such events. */ | |
fe798b75 | 6684 | create_catchpoint (tempflag, cond_string, &catch_exec_breakpoint_ops); |
c906108c | 6685 | } |
c5aa993b | 6686 | |
3086aeae DJ |
6687 | static enum print_stop_action |
6688 | print_exception_catchpoint (struct breakpoint *b) | |
6689 | { | |
ade92717 | 6690 | int bp_temp, bp_throw; |
3086aeae | 6691 | |
ade92717 | 6692 | annotate_catchpoint (b->number); |
3086aeae | 6693 | |
ade92717 AR |
6694 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
6695 | if (b->loc->address != b->loc->requested_address) | |
6696 | breakpoint_adjustment_warning (b->loc->requested_address, | |
6697 | b->loc->address, | |
6698 | b->number, 1); | |
df2b6d2d | 6699 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
6700 | ui_out_text (uiout, |
6701 | bp_temp ? "Temporary catchpoint " | |
6702 | : "Catchpoint "); | |
6703 | if (!ui_out_is_mi_like_p (uiout)) | |
6704 | ui_out_field_int (uiout, "bkptno", b->number); | |
6705 | ui_out_text (uiout, | |
c0b37c48 AR |
6706 | bp_throw ? " (exception thrown), " |
6707 | : " (exception caught), "); | |
ade92717 AR |
6708 | if (ui_out_is_mi_like_p (uiout)) |
6709 | { | |
6710 | ui_out_field_string (uiout, "reason", | |
6711 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
6712 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
6713 | ui_out_field_int (uiout, "bkptno", b->number); | |
6714 | } | |
3086aeae DJ |
6715 | return PRINT_SRC_AND_LOC; |
6716 | } | |
6717 | ||
6718 | static void | |
6719 | print_one_exception_catchpoint (struct breakpoint *b, CORE_ADDR *last_addr) | |
6720 | { | |
79a45b7d TT |
6721 | struct value_print_options opts; |
6722 | get_user_print_options (&opts); | |
6723 | if (opts.addressprint) | |
3086aeae DJ |
6724 | { |
6725 | annotate_field (4); | |
604133b5 AR |
6726 | if (b->loc == NULL || b->loc->shlib_disabled) |
6727 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
6728 | else | |
6729 | ui_out_field_core_addr (uiout, "addr", b->loc->address); | |
3086aeae DJ |
6730 | } |
6731 | annotate_field (5); | |
604133b5 AR |
6732 | if (b->loc) |
6733 | *last_addr = b->loc->address; | |
3086aeae DJ |
6734 | if (strstr (b->addr_string, "throw") != NULL) |
6735 | ui_out_field_string (uiout, "what", "exception throw"); | |
6736 | else | |
6737 | ui_out_field_string (uiout, "what", "exception catch"); | |
6738 | } | |
6739 | ||
6740 | static void | |
6741 | print_mention_exception_catchpoint (struct breakpoint *b) | |
6742 | { | |
ade92717 AR |
6743 | int bp_temp; |
6744 | int bp_throw; | |
6745 | ||
df2b6d2d | 6746 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
6747 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
6748 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
6749 | : _("Catchpoint ")); | |
6750 | ui_out_field_int (uiout, "bkptno", b->number); | |
6751 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
6752 | : _(" (catch)")); | |
3086aeae DJ |
6753 | } |
6754 | ||
6755 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { | |
ce78b96d JB |
6756 | NULL, /* insert */ |
6757 | NULL, /* remove */ | |
6758 | NULL, /* breakpoint_hit */ | |
3086aeae DJ |
6759 | print_exception_catchpoint, |
6760 | print_one_exception_catchpoint, | |
6761 | print_mention_exception_catchpoint | |
6762 | }; | |
6763 | ||
6764 | static int | |
6765 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
6766 | enum exception_event_kind ex_event, int from_tty) | |
6767 | { | |
604133b5 AR |
6768 | char *trigger_func_name; |
6769 | ||
3086aeae | 6770 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 6771 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 6772 | else |
604133b5 | 6773 | trigger_func_name = "__cxa_throw"; |
3086aeae | 6774 | |
604133b5 AR |
6775 | break_command_really (trigger_func_name, cond_string, -1, |
6776 | 0 /* condition and thread are valid. */, | |
1042e4c0 | 6777 | tempflag, 0, 0, |
604133b5 AR |
6778 | 0, |
6779 | AUTO_BOOLEAN_TRUE /* pending */, | |
41447f92 VP |
6780 | &gnu_v3_exception_catchpoint_ops, from_tty, |
6781 | 1 /* enabled */); | |
3086aeae | 6782 | |
3086aeae DJ |
6783 | return 1; |
6784 | } | |
6785 | ||
c5aa993b | 6786 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
6787 | |
6788 | static void | |
fba45db2 KB |
6789 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
6790 | int tempflag, int from_tty) | |
c906108c | 6791 | { |
c5aa993b JM |
6792 | char *cond_string = NULL; |
6793 | struct symtab_and_line *sal = NULL; | |
6794 | ||
44feb3ce TT |
6795 | if (!arg) |
6796 | arg = ""; | |
c906108c | 6797 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6798 | |
c906108c SS |
6799 | cond_string = ep_parse_optional_if_clause (&arg); |
6800 | ||
6801 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6802 | error (_("Junk at end of arguments.")); |
c906108c | 6803 | |
059fb39f PM |
6804 | if (ex_event != EX_EVENT_THROW |
6805 | && ex_event != EX_EVENT_CATCH) | |
8a3fe4f8 | 6806 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 6807 | |
3086aeae DJ |
6808 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
6809 | return; | |
6810 | ||
8a3fe4f8 | 6811 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
6812 | } |
6813 | ||
44feb3ce TT |
6814 | /* Implementation of "catch catch" command. */ |
6815 | ||
6816 | static void | |
6817 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
6818 | { | |
6819 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
6820 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); | |
6821 | } | |
6822 | ||
6823 | /* Implementation of "catch throw" command. */ | |
6824 | ||
6825 | static void | |
6826 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
6827 | { | |
6828 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
6829 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); | |
6830 | } | |
6831 | ||
f7f9143b JB |
6832 | /* Create a breakpoint struct for Ada exception catchpoints. */ |
6833 | ||
6834 | static void | |
6835 | create_ada_exception_breakpoint (struct symtab_and_line sal, | |
6836 | char *addr_string, | |
6837 | char *exp_string, | |
6838 | char *cond_string, | |
6839 | struct expression *cond, | |
6840 | struct breakpoint_ops *ops, | |
6841 | int tempflag, | |
6842 | int from_tty) | |
6843 | { | |
6844 | struct breakpoint *b; | |
6845 | ||
6846 | if (from_tty) | |
6847 | { | |
6848 | describe_other_breakpoints (sal.pc, sal.section, -1); | |
6849 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special | |
6850 | version for exception catchpoints, because two catchpoints | |
6851 | used for different exception names will use the same address. | |
6852 | In this case, a "breakpoint ... also set at..." warning is | |
6853 | unproductive. Besides. the warning phrasing is also a bit | |
6854 | inapropriate, we should use the word catchpoint, and tell | |
6855 | the user what type of catchpoint it is. The above is good | |
6856 | enough for now, though. */ | |
6857 | } | |
6858 | ||
6859 | b = set_raw_breakpoint (sal, bp_breakpoint); | |
6860 | set_breakpoint_count (breakpoint_count + 1); | |
6861 | ||
6862 | b->enable_state = bp_enabled; | |
6863 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
6864 | b->number = breakpoint_count; | |
6865 | b->ignore_count = 0; | |
511a6cd4 | 6866 | b->loc->cond = cond; |
f7f9143b JB |
6867 | b->addr_string = addr_string; |
6868 | b->language = language_ada; | |
6869 | b->cond_string = cond_string; | |
6870 | b->exp_string = exp_string; | |
6871 | b->thread = -1; | |
6872 | b->ops = ops; | |
f7f9143b JB |
6873 | |
6874 | mention (b); | |
b60e7edf | 6875 | update_global_location_list (1); |
f7f9143b JB |
6876 | } |
6877 | ||
6878 | /* Implement the "catch exception" command. */ | |
6879 | ||
6880 | static void | |
44feb3ce TT |
6881 | catch_ada_exception_command (char *arg, int from_tty, |
6882 | struct cmd_list_element *command) | |
f7f9143b | 6883 | { |
44feb3ce | 6884 | int tempflag; |
f7f9143b JB |
6885 | struct symtab_and_line sal; |
6886 | enum bptype type; | |
6887 | char *addr_string = NULL; | |
6888 | char *exp_string = NULL; | |
6889 | char *cond_string = NULL; | |
6890 | struct expression *cond = NULL; | |
6891 | struct breakpoint_ops *ops = NULL; | |
6892 | ||
44feb3ce TT |
6893 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
6894 | ||
6895 | if (!arg) | |
6896 | arg = ""; | |
f7f9143b JB |
6897 | sal = ada_decode_exception_location (arg, &addr_string, &exp_string, |
6898 | &cond_string, &cond, &ops); | |
6899 | create_ada_exception_breakpoint (sal, addr_string, exp_string, | |
6900 | cond_string, cond, ops, tempflag, | |
6901 | from_tty); | |
6902 | } | |
6903 | ||
6904 | /* Implement the "catch assert" command. */ | |
6905 | ||
6906 | static void | |
44feb3ce | 6907 | catch_assert_command (char *arg, int from_tty, struct cmd_list_element *command) |
f7f9143b | 6908 | { |
44feb3ce | 6909 | int tempflag; |
f7f9143b JB |
6910 | struct symtab_and_line sal; |
6911 | char *addr_string = NULL; | |
6912 | struct breakpoint_ops *ops = NULL; | |
6913 | ||
44feb3ce TT |
6914 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
6915 | ||
6916 | if (!arg) | |
6917 | arg = ""; | |
f7f9143b JB |
6918 | sal = ada_decode_assert_location (arg, &addr_string, &ops); |
6919 | create_ada_exception_breakpoint (sal, addr_string, NULL, NULL, NULL, ops, | |
6920 | tempflag, from_tty); | |
6921 | } | |
6922 | ||
c906108c | 6923 | static void |
fba45db2 | 6924 | catch_command (char *arg, int from_tty) |
c906108c | 6925 | { |
44feb3ce | 6926 | error (_("Catch requires an event name.")); |
c906108c SS |
6927 | } |
6928 | \f | |
6929 | ||
6930 | static void | |
fba45db2 | 6931 | tcatch_command (char *arg, int from_tty) |
c906108c | 6932 | { |
44feb3ce | 6933 | error (_("Catch requires an event name.")); |
c906108c SS |
6934 | } |
6935 | ||
80f8a6eb | 6936 | /* Delete breakpoints by address or line. */ |
c906108c SS |
6937 | |
6938 | static void | |
fba45db2 | 6939 | clear_command (char *arg, int from_tty) |
c906108c | 6940 | { |
d6e956e5 VP |
6941 | struct breakpoint *b; |
6942 | VEC(breakpoint_p) *found = 0; | |
6943 | int ix; | |
c906108c SS |
6944 | int default_match; |
6945 | struct symtabs_and_lines sals; | |
6946 | struct symtab_and_line sal; | |
c906108c SS |
6947 | int i; |
6948 | ||
6949 | if (arg) | |
6950 | { | |
6951 | sals = decode_line_spec (arg, 1); | |
6952 | default_match = 0; | |
6953 | } | |
6954 | else | |
6955 | { | |
c5aa993b | 6956 | sals.sals = (struct symtab_and_line *) |
c906108c | 6957 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 6958 | make_cleanup (xfree, sals.sals); |
fe39c653 | 6959 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
6960 | sal.line = default_breakpoint_line; |
6961 | sal.symtab = default_breakpoint_symtab; | |
6962 | sal.pc = default_breakpoint_address; | |
6963 | if (sal.symtab == 0) | |
8a3fe4f8 | 6964 | error (_("No source file specified.")); |
c906108c SS |
6965 | |
6966 | sals.sals[0] = sal; | |
6967 | sals.nelts = 1; | |
6968 | ||
6969 | default_match = 1; | |
6970 | } | |
6971 | ||
ed0616c6 VP |
6972 | /* We don't call resolve_sal_pc here. That's not |
6973 | as bad as it seems, because all existing breakpoints | |
6974 | typically have both file/line and pc set. So, if | |
6975 | clear is given file/line, we can match this to existing | |
6976 | breakpoint without obtaining pc at all. | |
6977 | ||
6978 | We only support clearing given the address explicitly | |
6979 | present in breakpoint table. Say, we've set breakpoint | |
6980 | at file:line. There were several PC values for that file:line, | |
6981 | due to optimization, all in one block. | |
6982 | We've picked one PC value. If "clear" is issued with another | |
6983 | PC corresponding to the same file:line, the breakpoint won't | |
6984 | be cleared. We probably can still clear the breakpoint, but | |
6985 | since the other PC value is never presented to user, user | |
6986 | can only find it by guessing, and it does not seem important | |
6987 | to support that. */ | |
6988 | ||
c906108c | 6989 | /* For each line spec given, delete bps which correspond |
80f8a6eb MS |
6990 | to it. Do it in two passes, solely to preserve the current |
6991 | behavior that from_tty is forced true if we delete more than | |
6992 | one breakpoint. */ | |
c906108c | 6993 | |
80f8a6eb | 6994 | found = NULL; |
c906108c SS |
6995 | for (i = 0; i < sals.nelts; i++) |
6996 | { | |
6997 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
6998 | If line given (pc == 0), clear all bpts on specified line. |
6999 | If defaulting, clear all bpts on default line | |
c906108c | 7000 | or at default pc. |
c5aa993b JM |
7001 | |
7002 | defaulting sal.pc != 0 tests to do | |
7003 | ||
7004 | 0 1 pc | |
7005 | 1 1 pc _and_ line | |
7006 | 0 0 line | |
7007 | 1 0 <can't happen> */ | |
c906108c SS |
7008 | |
7009 | sal = sals.sals[i]; | |
c906108c | 7010 | |
d6e956e5 VP |
7011 | /* Find all matching breakpoints and add them to |
7012 | 'found'. */ | |
7013 | ALL_BREAKPOINTS (b) | |
c5aa993b | 7014 | { |
0d381245 | 7015 | int match = 0; |
80f8a6eb MS |
7016 | /* Are we going to delete b? */ |
7017 | if (b->type != bp_none | |
7018 | && b->type != bp_watchpoint | |
7019 | && b->type != bp_hardware_watchpoint | |
7020 | && b->type != bp_read_watchpoint | |
0d381245 VP |
7021 | && b->type != bp_access_watchpoint) |
7022 | { | |
7023 | struct bp_location *loc = b->loc; | |
7024 | for (; loc; loc = loc->next) | |
7025 | { | |
7026 | int pc_match = sal.pc | |
7027 | && (loc->address == sal.pc) | |
7028 | && (!section_is_overlay (loc->section) | |
7029 | || loc->section == sal.section); | |
7030 | int line_match = ((default_match || (0 == sal.pc)) | |
7031 | && b->source_file != NULL | |
7032 | && sal.symtab != NULL | |
7033 | && strcmp (b->source_file, sal.symtab->filename) == 0 | |
7034 | && b->line_number == sal.line); | |
7035 | if (pc_match || line_match) | |
7036 | { | |
7037 | match = 1; | |
7038 | break; | |
7039 | } | |
7040 | } | |
7041 | } | |
7042 | ||
7043 | if (match) | |
d6e956e5 | 7044 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 7045 | } |
80f8a6eb MS |
7046 | } |
7047 | /* Now go thru the 'found' chain and delete them. */ | |
d6e956e5 | 7048 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
7049 | { |
7050 | if (arg) | |
8a3fe4f8 | 7051 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 7052 | else |
8a3fe4f8 | 7053 | error (_("No breakpoint at this line.")); |
80f8a6eb | 7054 | } |
c906108c | 7055 | |
d6e956e5 | 7056 | if (VEC_length(breakpoint_p, found) > 1) |
80f8a6eb MS |
7057 | from_tty = 1; /* Always report if deleted more than one */ |
7058 | if (from_tty) | |
a3f17187 | 7059 | { |
d6e956e5 | 7060 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
7061 | printf_unfiltered (_("Deleted breakpoint ")); |
7062 | else | |
7063 | printf_unfiltered (_("Deleted breakpoints ")); | |
7064 | } | |
80f8a6eb | 7065 | breakpoints_changed (); |
d6e956e5 VP |
7066 | |
7067 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 7068 | { |
c5aa993b | 7069 | if (from_tty) |
d6e956e5 VP |
7070 | printf_unfiltered ("%d ", b->number); |
7071 | delete_breakpoint (b); | |
c906108c | 7072 | } |
80f8a6eb MS |
7073 | if (from_tty) |
7074 | putchar_unfiltered ('\n'); | |
c906108c SS |
7075 | } |
7076 | \f | |
7077 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
7078 | all breakpoints that are marked for deletion, whether hit or not. | |
7079 | This is called after any breakpoint is hit, or after errors. */ | |
7080 | ||
7081 | void | |
fba45db2 | 7082 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
7083 | { |
7084 | struct breakpoint *b, *temp; | |
7085 | ||
7086 | for (; bs; bs = bs->next) | |
20874c92 VP |
7087 | if (bs->breakpoint_at |
7088 | && bs->breakpoint_at->owner | |
7089 | && bs->breakpoint_at->owner->disposition == disp_del | |
c906108c | 7090 | && bs->stop) |
4f8d1dc6 | 7091 | delete_breakpoint (bs->breakpoint_at->owner); |
c906108c SS |
7092 | |
7093 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7094 | { |
b5de0fa7 | 7095 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
7096 | delete_breakpoint (b); |
7097 | } | |
c906108c SS |
7098 | } |
7099 | ||
f7545552 TT |
7100 | /* A cleanup function which destroys a vector. */ |
7101 | ||
7102 | static void | |
7103 | do_vec_free (void *p) | |
7104 | { | |
7105 | VEC(bp_location_p) **vec = p; | |
7106 | if (*vec) | |
7107 | VEC_free (bp_location_p, *vec); | |
7108 | } | |
7109 | ||
4cd9bd08 | 7110 | /* If SHOULD_INSERT is false, do not insert any breakpoint locations |
b60e7edf PA |
7111 | into the inferior, only remove already-inserted locations that no |
7112 | longer should be inserted. Functions that delete a breakpoint or | |
7113 | breakpoints should pass false, so that deleting a breakpoint | |
7114 | doesn't have the side effect of inserting the locations of other | |
7115 | breakpoints that are marked not-inserted, but should_be_inserted | |
7116 | returns true on them. | |
7117 | ||
7118 | This behaviour is useful is situations close to tear-down -- e.g., | |
7119 | after an exec, while the target still has execution, but breakpoint | |
7120 | shadows of the previous executable image should *NOT* be restored | |
7121 | to the new image; or before detaching, where the target still has | |
7122 | execution and wants to delete breakpoints from GDB's lists, and all | |
7123 | breakpoints had already been removed from the inferior. */ | |
7124 | ||
0d381245 | 7125 | static void |
b60e7edf | 7126 | update_global_location_list (int should_insert) |
0d381245 | 7127 | { |
74960c60 VP |
7128 | struct breakpoint *b; |
7129 | struct bp_location **next = &bp_location_chain; | |
7130 | struct bp_location *loc; | |
7131 | struct bp_location *loc2; | |
74960c60 VP |
7132 | VEC(bp_location_p) *old_locations = NULL; |
7133 | int ret; | |
7134 | int ix; | |
f7545552 TT |
7135 | struct cleanup *cleanups; |
7136 | ||
7137 | cleanups = make_cleanup (do_vec_free, &old_locations); | |
74960c60 VP |
7138 | /* Store old locations for future reference. */ |
7139 | for (loc = bp_location_chain; loc; loc = loc->global_next) | |
7140 | VEC_safe_push (bp_location_p, old_locations, loc); | |
0d381245 | 7141 | |
74960c60 VP |
7142 | bp_location_chain = NULL; |
7143 | ALL_BREAKPOINTS (b) | |
0d381245 | 7144 | { |
74960c60 | 7145 | for (loc = b->loc; loc; loc = loc->next) |
0d381245 | 7146 | { |
74960c60 VP |
7147 | *next = loc; |
7148 | next = &(loc->global_next); | |
7149 | *next = NULL; | |
0d381245 | 7150 | } |
74960c60 VP |
7151 | } |
7152 | ||
7153 | /* Identify bp_location instances that are no longer present in the new | |
7154 | list, and therefore should be freed. Note that it's not necessary that | |
7155 | those locations should be removed from inferior -- if there's another | |
7156 | location at the same address (previously marked as duplicate), | |
7157 | we don't need to remove/insert the location. */ | |
7158 | for (ix = 0; VEC_iterate(bp_location_p, old_locations, ix, loc); ++ix) | |
7159 | { | |
7160 | /* Tells if 'loc' is found amoung the new locations. If not, we | |
7161 | have to free it. */ | |
7162 | int found_object = 0; | |
20874c92 VP |
7163 | /* Tells if the location should remain inserted in the target. */ |
7164 | int keep_in_target = 0; | |
7165 | int removed = 0; | |
74960c60 VP |
7166 | for (loc2 = bp_location_chain; loc2; loc2 = loc2->global_next) |
7167 | if (loc2 == loc) | |
7168 | { | |
7169 | found_object = 1; | |
7170 | break; | |
7171 | } | |
7172 | ||
7173 | /* If this location is no longer present, and inserted, look if there's | |
7174 | maybe a new location at the same address. If so, mark that one | |
7175 | inserted, and don't remove this one. This is needed so that we | |
7176 | don't have a time window where a breakpoint at certain location is not | |
7177 | inserted. */ | |
7178 | ||
7179 | if (loc->inserted) | |
0d381245 | 7180 | { |
74960c60 | 7181 | /* If the location is inserted now, we might have to remove it. */ |
74960c60 VP |
7182 | |
7183 | if (found_object && should_be_inserted (loc)) | |
7184 | { | |
7185 | /* The location is still present in the location list, and still | |
7186 | should be inserted. Don't do anything. */ | |
20874c92 | 7187 | keep_in_target = 1; |
74960c60 VP |
7188 | } |
7189 | else | |
7190 | { | |
7191 | /* The location is either no longer present, or got disabled. | |
7192 | See if there's another location at the same address, in which | |
7193 | case we don't need to remove this one from the target. */ | |
7194 | if (breakpoint_address_is_meaningful (loc->owner)) | |
7195 | for (loc2 = bp_location_chain; loc2; loc2 = loc2->global_next) | |
7196 | { | |
7197 | /* For the sake of should_insert_location. The | |
7198 | call to check_duplicates will fix up this later. */ | |
7199 | loc2->duplicate = 0; | |
7200 | if (should_be_inserted (loc2) | |
7201 | && loc2 != loc && loc2->address == loc->address) | |
7202 | { | |
7203 | loc2->inserted = 1; | |
7204 | loc2->target_info = loc->target_info; | |
20874c92 | 7205 | keep_in_target = 1; |
74960c60 VP |
7206 | break; |
7207 | } | |
7208 | } | |
7209 | } | |
7210 | ||
20874c92 VP |
7211 | if (!keep_in_target) |
7212 | { | |
7213 | if (remove_breakpoint (loc, mark_uninserted)) | |
7214 | { | |
7215 | /* This is just about all we can do. We could keep this | |
7216 | location on the global list, and try to remove it next | |
7217 | time, but there's no particular reason why we will | |
7218 | succeed next time. | |
7219 | ||
7220 | Note that at this point, loc->owner is still valid, | |
7221 | as delete_breakpoint frees the breakpoint only | |
7222 | after calling us. */ | |
7223 | printf_filtered (_("warning: Error removing breakpoint %d\n"), | |
7224 | loc->owner->number); | |
7225 | } | |
7226 | removed = 1; | |
7227 | } | |
0d381245 | 7228 | } |
74960c60 VP |
7229 | |
7230 | if (!found_object) | |
1c5cfe86 PA |
7231 | { |
7232 | if (removed && non_stop) | |
20874c92 VP |
7233 | { |
7234 | /* This location was removed from the targets. In non-stop mode, | |
7235 | a race condition is possible where we've removed a breakpoint, | |
7236 | but stop events for that breakpoint are already queued and will | |
7237 | arrive later. To suppress spurious SIGTRAPs reported to user, | |
7238 | we keep this breakpoint location for a bit, and will retire it | |
7239 | after we see 3 * thread_count events. | |
1c5cfe86 | 7240 | The theory here is that reporting of events should, |
20874c92 VP |
7241 | "on the average", be fair, so after that many event we'll see |
7242 | events from all threads that have anything of interest, and no | |
1c5cfe86 | 7243 | longer need to keep this breakpoint. This is just a |
20874c92 | 7244 | heuristic, but if it's wrong, we'll report unexpected SIGTRAP, |
1c5cfe86 | 7245 | which is usability issue, but not a correctness problem. */ |
20874c92 VP |
7246 | loc->events_till_retirement = 3 * (thread_count () + 1); |
7247 | loc->owner = NULL; | |
20874c92 | 7248 | |
1c5cfe86 PA |
7249 | VEC_safe_push (bp_location_p, moribund_locations, loc); |
7250 | } | |
7251 | else | |
7252 | free_bp_location (loc); | |
20874c92 | 7253 | } |
74960c60 | 7254 | } |
1c5cfe86 | 7255 | |
74960c60 VP |
7256 | ALL_BREAKPOINTS (b) |
7257 | { | |
7258 | check_duplicates (b); | |
0d381245 | 7259 | } |
74960c60 | 7260 | |
50c71eaf | 7261 | if (breakpoints_always_inserted_mode () && should_insert |
c35b1492 | 7262 | && (have_live_inferiors () |
2567c7d9 | 7263 | || (gdbarch_has_global_breakpoints (target_gdbarch)))) |
74960c60 | 7264 | insert_breakpoint_locations (); |
f7545552 TT |
7265 | |
7266 | do_cleanups (cleanups); | |
74960c60 VP |
7267 | } |
7268 | ||
20874c92 VP |
7269 | void |
7270 | breakpoint_retire_moribund (void) | |
7271 | { | |
7272 | struct bp_location *loc; | |
7273 | int ix; | |
7274 | ||
7275 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
7276 | if (--(loc->events_till_retirement) == 0) | |
7277 | { | |
7278 | free_bp_location (loc); | |
7279 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
7280 | --ix; | |
7281 | } | |
7282 | } | |
7283 | ||
74960c60 | 7284 | static void |
b60e7edf | 7285 | update_global_location_list_nothrow (int inserting) |
74960c60 VP |
7286 | { |
7287 | struct gdb_exception e; | |
7288 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
b60e7edf | 7289 | update_global_location_list (inserting); |
0d381245 VP |
7290 | } |
7291 | ||
a474d7c2 PA |
7292 | /* Clear BPT from a BPS. */ |
7293 | static void | |
7294 | bpstat_remove_breakpoint (bpstat bps, struct breakpoint *bpt) | |
7295 | { | |
7296 | bpstat bs; | |
7297 | for (bs = bps; bs; bs = bs->next) | |
7298 | if (bs->breakpoint_at && bs->breakpoint_at->owner == bpt) | |
7299 | { | |
7300 | bs->breakpoint_at = NULL; | |
7301 | bs->old_val = NULL; | |
7302 | /* bs->commands will be freed later. */ | |
7303 | } | |
7304 | } | |
7305 | ||
7306 | /* Callback for iterate_over_threads. */ | |
7307 | static int | |
7308 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
7309 | { | |
7310 | struct breakpoint *bpt = data; | |
7311 | bpstat_remove_breakpoint (th->stop_bpstat, bpt); | |
7312 | return 0; | |
7313 | } | |
7314 | ||
53a5351d JM |
7315 | /* Delete a breakpoint and clean up all traces of it in the data |
7316 | structures. */ | |
c906108c SS |
7317 | |
7318 | void | |
fba45db2 | 7319 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 7320 | { |
52f0bd74 | 7321 | struct breakpoint *b; |
74960c60 | 7322 | struct bp_location *loc, *next; |
c906108c | 7323 | |
8a3fe4f8 | 7324 | gdb_assert (bpt != NULL); |
c906108c SS |
7325 | |
7326 | /* Has this bp already been deleted? This can happen because multiple | |
7327 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
7328 | ||
7329 | One example of this happening is a watchpoint's scope bp. When the | |
7330 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
7331 | delete it. We also delete its scope bp. But the scope bp is marked | |
7332 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
7333 | checked for auto-deleting bp's, which are deleted. | |
7334 | ||
7335 | A real solution to this problem might involve reference counts in bp's, | |
7336 | and/or giving them pointers back to their referencing bpstat's, and | |
7337 | teaching delete_breakpoint to only free a bp's storage when no more | |
1272ad14 | 7338 | references were extent. A cheaper bandaid was chosen. */ |
c906108c SS |
7339 | if (bpt->type == bp_none) |
7340 | return; | |
7341 | ||
383f836e | 7342 | observer_notify_breakpoint_deleted (bpt->number); |
c906108c | 7343 | |
c906108c SS |
7344 | if (breakpoint_chain == bpt) |
7345 | breakpoint_chain = bpt->next; | |
7346 | ||
c906108c SS |
7347 | ALL_BREAKPOINTS (b) |
7348 | if (b->next == bpt) | |
c5aa993b JM |
7349 | { |
7350 | b->next = bpt->next; | |
7351 | break; | |
7352 | } | |
c906108c | 7353 | |
c906108c | 7354 | free_command_lines (&bpt->commands); |
c906108c | 7355 | if (bpt->cond_string != NULL) |
b8c9b27d | 7356 | xfree (bpt->cond_string); |
c906108c | 7357 | if (bpt->addr_string != NULL) |
b8c9b27d | 7358 | xfree (bpt->addr_string); |
c906108c | 7359 | if (bpt->exp != NULL) |
b8c9b27d | 7360 | xfree (bpt->exp); |
c906108c | 7361 | if (bpt->exp_string != NULL) |
b8c9b27d | 7362 | xfree (bpt->exp_string); |
c906108c SS |
7363 | if (bpt->val != NULL) |
7364 | value_free (bpt->val); | |
7365 | if (bpt->source_file != NULL) | |
b8c9b27d | 7366 | xfree (bpt->source_file); |
c906108c | 7367 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 7368 | xfree (bpt->exec_pathname); |
c906108c SS |
7369 | |
7370 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
7371 | /* FIXME, how can we find all bpstat's? | |
198757a8 VP |
7372 | We just check stop_bpstat for now. Note that we cannot just |
7373 | remove bpstats pointing at bpt from the stop_bpstat list | |
7374 | entirely, as breakpoint commands are associated with the bpstat; | |
7375 | if we remove it here, then the later call to | |
7376 | bpstat_do_actions (&stop_bpstat); | |
7377 | in event-top.c won't do anything, and temporary breakpoints | |
7378 | with commands won't work. */ | |
a474d7c2 | 7379 | |
a474d7c2 | 7380 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); |
74960c60 VP |
7381 | |
7382 | /* Now that breakpoint is removed from breakpoint | |
7383 | list, update the global location list. This | |
7384 | will remove locations that used to belong to | |
7385 | this breakpoint. Do this before freeing | |
7386 | the breakpoint itself, since remove_breakpoint | |
7387 | looks at location's owner. It might be better | |
7388 | design to have location completely self-contained, | |
7389 | but it's not the case now. */ | |
b60e7edf | 7390 | update_global_location_list (0); |
74960c60 VP |
7391 | |
7392 | ||
c906108c SS |
7393 | /* On the chance that someone will soon try again to delete this same |
7394 | bp, we mark it as deleted before freeing its storage. */ | |
7395 | bpt->type = bp_none; | |
7396 | ||
b8c9b27d | 7397 | xfree (bpt); |
c906108c SS |
7398 | } |
7399 | ||
4d6140d9 AC |
7400 | static void |
7401 | do_delete_breakpoint_cleanup (void *b) | |
7402 | { | |
7403 | delete_breakpoint (b); | |
7404 | } | |
7405 | ||
7406 | struct cleanup * | |
7407 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
7408 | { | |
7409 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
7410 | } | |
7411 | ||
c906108c | 7412 | void |
fba45db2 | 7413 | delete_command (char *arg, int from_tty) |
c906108c SS |
7414 | { |
7415 | struct breakpoint *b, *temp; | |
7416 | ||
ea9365bb TT |
7417 | dont_repeat (); |
7418 | ||
c906108c SS |
7419 | if (arg == 0) |
7420 | { | |
7421 | int breaks_to_delete = 0; | |
7422 | ||
7423 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
7424 | Do not delete internal or call-dummy breakpoints, these |
7425 | have to be deleted with an explicit breakpoint number argument. */ | |
7426 | ALL_BREAKPOINTS (b) | |
7427 | { | |
059fb39f PM |
7428 | if (b->type != bp_call_dummy |
7429 | && b->type != bp_shlib_event | |
7430 | && b->type != bp_thread_event | |
7431 | && b->type != bp_overlay_event | |
7432 | && b->number >= 0) | |
973d738b DJ |
7433 | { |
7434 | breaks_to_delete = 1; | |
7435 | break; | |
7436 | } | |
c5aa993b | 7437 | } |
c906108c SS |
7438 | |
7439 | /* Ask user only if there are some breakpoints to delete. */ | |
7440 | if (!from_tty | |
e2e0b3e5 | 7441 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 7442 | { |
c5aa993b JM |
7443 | ALL_BREAKPOINTS_SAFE (b, temp) |
7444 | { | |
059fb39f PM |
7445 | if (b->type != bp_call_dummy |
7446 | && b->type != bp_shlib_event | |
7447 | && b->type != bp_thread_event | |
7448 | && b->type != bp_overlay_event | |
7449 | && b->number >= 0) | |
c5aa993b JM |
7450 | delete_breakpoint (b); |
7451 | } | |
c906108c SS |
7452 | } |
7453 | } | |
7454 | else | |
7455 | map_breakpoint_numbers (arg, delete_breakpoint); | |
7456 | } | |
7457 | ||
0d381245 VP |
7458 | static int |
7459 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 7460 | { |
0d381245 VP |
7461 | for (; loc; loc = loc->next) |
7462 | if (!loc->shlib_disabled) | |
7463 | return 0; | |
7464 | return 1; | |
fe3f5fa8 VP |
7465 | } |
7466 | ||
776592bf DE |
7467 | /* Subroutine of update_breakpoint_locations to simplify it. |
7468 | Return non-zero if multiple fns in list LOC have the same name. | |
7469 | Null names are ignored. */ | |
7470 | ||
7471 | static int | |
7472 | ambiguous_names_p (struct bp_location *loc) | |
7473 | { | |
7474 | struct bp_location *l; | |
7475 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
7476 | (int (*) (const void *, const void *)) streq, | |
7477 | NULL, xcalloc, xfree); | |
7478 | ||
7479 | for (l = loc; l != NULL; l = l->next) | |
7480 | { | |
7481 | const char **slot; | |
7482 | const char *name = l->function_name; | |
7483 | ||
7484 | /* Allow for some names to be NULL, ignore them. */ | |
7485 | if (name == NULL) | |
7486 | continue; | |
7487 | ||
7488 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
7489 | INSERT); | |
7490 | /* NOTE: We can assume slot != NULL here because xcalloc never returns | |
7491 | NULL. */ | |
7492 | if (*slot != NULL) | |
7493 | { | |
7494 | htab_delete (htab); | |
7495 | return 1; | |
7496 | } | |
7497 | *slot = name; | |
7498 | } | |
7499 | ||
7500 | htab_delete (htab); | |
7501 | return 0; | |
7502 | } | |
7503 | ||
fe3f5fa8 | 7504 | static void |
0d381245 VP |
7505 | update_breakpoint_locations (struct breakpoint *b, |
7506 | struct symtabs_and_lines sals) | |
fe3f5fa8 VP |
7507 | { |
7508 | int i; | |
7509 | char *s; | |
0d381245 VP |
7510 | struct bp_location *existing_locations = b->loc; |
7511 | ||
7512 | /* If there's no new locations, and all existing locations | |
7513 | are pending, don't do anything. This optimizes | |
7514 | the common case where all locations are in the same | |
7515 | shared library, that was unloaded. We'd like to | |
7516 | retain the location, so that when the library | |
7517 | is loaded again, we don't loose the enabled/disabled | |
7518 | status of the individual locations. */ | |
7519 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) | |
fe3f5fa8 VP |
7520 | return; |
7521 | ||
fe3f5fa8 VP |
7522 | b->loc = NULL; |
7523 | ||
0d381245 | 7524 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 7525 | { |
0d381245 | 7526 | struct bp_location *new_loc = |
39d61571 | 7527 | add_location_to_breakpoint (b, &(sals.sals[i])); |
fe3f5fa8 | 7528 | |
0d381245 VP |
7529 | /* Reparse conditions, they might contain references to the |
7530 | old symtab. */ | |
7531 | if (b->cond_string != NULL) | |
7532 | { | |
7533 | struct gdb_exception e; | |
fe3f5fa8 | 7534 | |
0d381245 VP |
7535 | s = b->cond_string; |
7536 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
7537 | { | |
7538 | new_loc->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), | |
7539 | 0); | |
7540 | } | |
7541 | if (e.reason < 0) | |
7542 | { | |
7543 | warning (_("failed to reevaluate condition for breakpoint %d: %s"), | |
7544 | b->number, e.message); | |
7545 | new_loc->enabled = 0; | |
7546 | } | |
7547 | } | |
fe3f5fa8 | 7548 | |
0d381245 VP |
7549 | if (b->source_file != NULL) |
7550 | xfree (b->source_file); | |
7551 | if (sals.sals[i].symtab == NULL) | |
7552 | b->source_file = NULL; | |
7553 | else | |
1b36a34b | 7554 | b->source_file = xstrdup (sals.sals[i].symtab->filename); |
fe3f5fa8 | 7555 | |
0d381245 VP |
7556 | if (b->line_number == 0) |
7557 | b->line_number = sals.sals[i].line; | |
7558 | } | |
fe3f5fa8 | 7559 | |
514f746b AR |
7560 | /* Update locations of permanent breakpoints. */ |
7561 | if (b->enable_state == bp_permanent) | |
7562 | make_breakpoint_permanent (b); | |
7563 | ||
0d381245 VP |
7564 | /* If possible, carry over 'disable' status from existing breakpoints. */ |
7565 | { | |
7566 | struct bp_location *e = existing_locations; | |
776592bf DE |
7567 | /* If there are multiple breakpoints with the same function name, |
7568 | e.g. for inline functions, comparing function names won't work. | |
7569 | Instead compare pc addresses; this is just a heuristic as things | |
7570 | may have moved, but in practice it gives the correct answer | |
7571 | often enough until a better solution is found. */ | |
7572 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
7573 | ||
0d381245 VP |
7574 | for (; e; e = e->next) |
7575 | { | |
7576 | if (!e->enabled && e->function_name) | |
7577 | { | |
7578 | struct bp_location *l = b->loc; | |
776592bf DE |
7579 | if (have_ambiguous_names) |
7580 | { | |
7581 | for (; l; l = l->next) | |
7582 | if (e->address == l->address) | |
7583 | { | |
7584 | l->enabled = 0; | |
7585 | break; | |
7586 | } | |
7587 | } | |
7588 | else | |
7589 | { | |
7590 | for (; l; l = l->next) | |
7591 | if (l->function_name | |
7592 | && strcmp (e->function_name, l->function_name) == 0) | |
7593 | { | |
7594 | l->enabled = 0; | |
7595 | break; | |
7596 | } | |
7597 | } | |
0d381245 VP |
7598 | } |
7599 | } | |
7600 | } | |
fe3f5fa8 | 7601 | |
b60e7edf | 7602 | update_global_location_list (1); |
fe3f5fa8 VP |
7603 | } |
7604 | ||
7605 | ||
c906108c SS |
7606 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
7607 | The value we return ends up being the return value from catch_errors. | |
7608 | Unused in this case. */ | |
7609 | ||
7610 | static int | |
4efb68b1 | 7611 | breakpoint_re_set_one (void *bint) |
c906108c | 7612 | { |
53a5351d JM |
7613 | /* get past catch_errs */ |
7614 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
7615 | struct value *mark; |
7616 | int i; | |
fe3f5fa8 VP |
7617 | int not_found = 0; |
7618 | int *not_found_ptr = ¬_found; | |
7619 | struct symtabs_and_lines sals = {}; | |
ed0616c6 | 7620 | struct symtabs_and_lines expanded; |
c906108c | 7621 | char *s; |
b5de0fa7 | 7622 | enum enable_state save_enable; |
fe3f5fa8 | 7623 | struct gdb_exception e; |
f7545552 | 7624 | struct cleanup *cleanups; |
c906108c SS |
7625 | |
7626 | switch (b->type) | |
7627 | { | |
7628 | case bp_none: | |
8a3fe4f8 | 7629 | warning (_("attempted to reset apparently deleted breakpoint #%d?"), |
53a5351d | 7630 | b->number); |
c906108c SS |
7631 | return 0; |
7632 | case bp_breakpoint: | |
7633 | case bp_hardware_breakpoint: | |
1042e4c0 | 7634 | case bp_tracepoint: |
c906108c SS |
7635 | if (b->addr_string == NULL) |
7636 | { | |
7637 | /* Anything without a string can't be re-set. */ | |
7638 | delete_breakpoint (b); | |
7639 | return 0; | |
7640 | } | |
c906108c SS |
7641 | |
7642 | set_language (b->language); | |
7643 | input_radix = b->input_radix; | |
7644 | s = b->addr_string; | |
fe3f5fa8 | 7645 | TRY_CATCH (e, RETURN_MASK_ERROR) |
c906108c | 7646 | { |
fe3f5fa8 VP |
7647 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, |
7648 | not_found_ptr); | |
7649 | } | |
7650 | if (e.reason < 0) | |
7651 | { | |
7652 | int not_found_and_ok = 0; | |
7653 | /* For pending breakpoints, it's expected that parsing | |
7654 | will fail until the right shared library is loaded. | |
7655 | User has already told to create pending breakpoints and | |
7656 | don't need extra messages. If breakpoint is in bp_shlib_disabled | |
7657 | state, then user already saw the message about that breakpoint | |
7658 | being disabled, and don't want to see more errors. */ | |
0d381245 VP |
7659 | if (not_found |
7660 | && (b->condition_not_parsed | |
7661 | || (b->loc && b->loc->shlib_disabled) | |
7662 | || b->enable_state == bp_disabled)) | |
fe3f5fa8 VP |
7663 | not_found_and_ok = 1; |
7664 | ||
7665 | if (!not_found_and_ok) | |
c906108c | 7666 | { |
fe3f5fa8 VP |
7667 | /* We surely don't want to warn about the same breakpoint |
7668 | 10 times. One solution, implemented here, is disable | |
7669 | the breakpoint on error. Another solution would be to | |
7670 | have separate 'warning emitted' flag. Since this | |
7671 | happens only when a binary has changed, I don't know | |
7672 | which approach is better. */ | |
7673 | b->enable_state = bp_disabled; | |
7674 | throw_exception (e); | |
c906108c | 7675 | } |
fe3f5fa8 | 7676 | } |
c906108c | 7677 | |
fe3f5fa8 VP |
7678 | if (not_found) |
7679 | break; | |
7680 | ||
7681 | gdb_assert (sals.nelts == 1); | |
7682 | resolve_sal_pc (&sals.sals[0]); | |
0d381245 | 7683 | if (b->condition_not_parsed && s && s[0]) |
fe3f5fa8 VP |
7684 | { |
7685 | char *cond_string = 0; | |
7686 | int thread = -1; | |
4a306c9a JB |
7687 | int task = 0; |
7688 | ||
fe3f5fa8 | 7689 | find_condition_and_thread (s, sals.sals[0].pc, |
4a306c9a | 7690 | &cond_string, &thread, &task); |
fe3f5fa8 VP |
7691 | if (cond_string) |
7692 | b->cond_string = cond_string; | |
7693 | b->thread = thread; | |
4a306c9a | 7694 | b->task = task; |
0d381245 | 7695 | b->condition_not_parsed = 0; |
fe3f5fa8 | 7696 | } |
ed0616c6 | 7697 | expanded = expand_line_sal_maybe (sals.sals[0]); |
f7545552 | 7698 | cleanups = make_cleanup (xfree, sals.sals); |
ed0616c6 | 7699 | update_breakpoint_locations (b, expanded); |
f7545552 | 7700 | do_cleanups (cleanups); |
c906108c SS |
7701 | break; |
7702 | ||
7703 | case bp_watchpoint: | |
7704 | case bp_hardware_watchpoint: | |
7705 | case bp_read_watchpoint: | |
7706 | case bp_access_watchpoint: | |
0b3de036 VP |
7707 | /* Watchpoint can be either on expression using entirely global variables, |
7708 | or it can be on local variables. | |
7709 | ||
7710 | Watchpoints of the first kind are never auto-deleted, and even persist | |
7711 | across program restarts. Since they can use variables from shared | |
7712 | libraries, we need to reparse expression as libraries are loaded | |
7713 | and unloaded. | |
7714 | ||
7715 | Watchpoints on local variables can also change meaning as result | |
7716 | of solib event. For example, if a watchpoint uses both a local and | |
7717 | a global variables in expression, it's a local watchpoint, but | |
7718 | unloading of a shared library will make the expression invalid. | |
7719 | This is not a very common use case, but we still re-evaluate | |
7720 | expression, to avoid surprises to the user. | |
7721 | ||
7722 | Note that for local watchpoints, we re-evaluate it only if | |
7723 | watchpoints frame id is still valid. If it's not, it means | |
7724 | the watchpoint is out of scope and will be deleted soon. In fact, | |
7725 | I'm not sure we'll ever be called in this case. | |
7726 | ||
7727 | If a local watchpoint's frame id is still valid, then | |
7728 | b->exp_valid_block is likewise valid, and we can safely use it. | |
7729 | ||
7730 | Don't do anything about disabled watchpoints, since they will | |
7731 | be reevaluated again when enabled. */ | |
a5606eee | 7732 | update_watchpoint (b, 1 /* reparse */); |
c906108c | 7733 | break; |
c5aa993b JM |
7734 | /* We needn't really do anything to reset these, since the mask |
7735 | that requests them is unaffected by e.g., new libraries being | |
7736 | loaded. */ | |
ce78b96d | 7737 | case bp_catchpoint: |
c906108c | 7738 | break; |
c5aa993b | 7739 | |
c906108c | 7740 | default: |
a3f17187 | 7741 | printf_filtered (_("Deleting unknown breakpoint type %d\n"), b->type); |
c906108c | 7742 | /* fall through */ |
611c83ae PA |
7743 | /* Delete overlay event breakpoints; they will be reset later by |
7744 | breakpoint_re_set. */ | |
1900040c | 7745 | case bp_overlay_event: |
c906108c SS |
7746 | delete_breakpoint (b); |
7747 | break; | |
7748 | ||
c5aa993b JM |
7749 | /* This breakpoint is special, it's set up when the inferior |
7750 | starts and we really don't want to touch it. */ | |
c906108c SS |
7751 | case bp_shlib_event: |
7752 | ||
c4093a6a JM |
7753 | /* Like bp_shlib_event, this breakpoint type is special. |
7754 | Once it is set up, we do not want to touch it. */ | |
7755 | case bp_thread_event: | |
7756 | ||
c5aa993b JM |
7757 | /* Keep temporary breakpoints, which can be encountered when we step |
7758 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7759 | Otherwise these should have been blown away via the cleanup chain | |
7760 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7761 | case bp_until: |
7762 | case bp_finish: | |
7763 | case bp_watchpoint_scope: | |
7764 | case bp_call_dummy: | |
7765 | case bp_step_resume: | |
611c83ae PA |
7766 | case bp_longjmp: |
7767 | case bp_longjmp_resume: | |
c906108c SS |
7768 | break; |
7769 | } | |
7770 | ||
7771 | return 0; | |
7772 | } | |
7773 | ||
e62c965a PP |
7774 | /* Re-set all breakpoints after symbols have been re-loaded. |
7775 | ||
7776 | If OBJFILE is non-null, create overlay break point only in OBJFILE | |
7777 | (speed optimization). Otherwise rescan all loaded objfiles. */ | |
7778 | ||
c906108c | 7779 | void |
e62c965a | 7780 | breakpoint_re_set_objfile (struct objfile *objfile) |
c906108c SS |
7781 | { |
7782 | struct breakpoint *b, *temp; | |
7783 | enum language save_language; | |
7784 | int save_input_radix; | |
c5aa993b | 7785 | |
c906108c SS |
7786 | save_language = current_language->la_language; |
7787 | save_input_radix = input_radix; | |
7788 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7789 | { |
53a5351d | 7790 | /* Format possible error msg */ |
fe3f5fa8 | 7791 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
7792 | b->number); |
7793 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 7794 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 7795 | do_cleanups (cleanups); |
c5aa993b | 7796 | } |
c906108c SS |
7797 | set_language (save_language); |
7798 | input_radix = save_input_radix; | |
e62c965a PP |
7799 | |
7800 | if (objfile == NULL) | |
7801 | ALL_OBJFILES (objfile) | |
7802 | create_overlay_event_breakpoint ("_ovly_debug_event", objfile); | |
7803 | else | |
7804 | create_overlay_event_breakpoint ("_ovly_debug_event", objfile); | |
7805 | } | |
7806 | ||
7807 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
7808 | ||
7809 | void | |
7810 | breakpoint_re_set (void) | |
7811 | { | |
7812 | breakpoint_re_set_objfile (NULL); | |
c906108c SS |
7813 | } |
7814 | \f | |
c906108c SS |
7815 | /* Reset the thread number of this breakpoint: |
7816 | ||
7817 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 7818 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 7819 | void |
fba45db2 | 7820 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
7821 | { |
7822 | if (b->thread != -1) | |
7823 | { | |
39f77062 KB |
7824 | if (in_thread_list (inferior_ptid)) |
7825 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
7826 | } |
7827 | } | |
7828 | ||
03ac34d5 MS |
7829 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7830 | If from_tty is nonzero, it prints a message to that effect, | |
7831 | which ends with a period (no newline). */ | |
7832 | ||
c906108c | 7833 | void |
fba45db2 | 7834 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 7835 | { |
52f0bd74 | 7836 | struct breakpoint *b; |
c906108c SS |
7837 | |
7838 | if (count < 0) | |
7839 | count = 0; | |
7840 | ||
7841 | ALL_BREAKPOINTS (b) | |
7842 | if (b->number == bptnum) | |
c5aa993b JM |
7843 | { |
7844 | b->ignore_count = count; | |
221ea385 KS |
7845 | if (from_tty) |
7846 | { | |
7847 | if (count == 0) | |
a3f17187 | 7848 | printf_filtered (_("Will stop next time breakpoint %d is reached."), |
221ea385 KS |
7849 | bptnum); |
7850 | else if (count == 1) | |
a3f17187 | 7851 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
7852 | bptnum); |
7853 | else | |
a3f17187 | 7854 | printf_filtered (_("Will ignore next %d crossings of breakpoint %d."), |
221ea385 KS |
7855 | count, bptnum); |
7856 | } | |
c5aa993b | 7857 | breakpoints_changed (); |
383f836e | 7858 | observer_notify_breakpoint_modified (b->number); |
c5aa993b JM |
7859 | return; |
7860 | } | |
c906108c | 7861 | |
8a3fe4f8 | 7862 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
7863 | } |
7864 | ||
b2175913 MS |
7865 | void |
7866 | make_breakpoint_silent (struct breakpoint *b) | |
7867 | { | |
7868 | /* Silence the breakpoint. */ | |
7869 | b->silent = 1; | |
7870 | } | |
7871 | ||
c906108c SS |
7872 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
7873 | ||
7874 | static void | |
fba45db2 | 7875 | ignore_command (char *args, int from_tty) |
c906108c SS |
7876 | { |
7877 | char *p = args; | |
52f0bd74 | 7878 | int num; |
c906108c SS |
7879 | |
7880 | if (p == 0) | |
e2e0b3e5 | 7881 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 7882 | |
c906108c | 7883 | num = get_number (&p); |
5c44784c | 7884 | if (num == 0) |
8a3fe4f8 | 7885 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 7886 | if (*p == 0) |
8a3fe4f8 | 7887 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
7888 | |
7889 | set_ignore_count (num, | |
7890 | longest_to_int (value_as_long (parse_and_eval (p))), | |
7891 | from_tty); | |
221ea385 KS |
7892 | if (from_tty) |
7893 | printf_filtered ("\n"); | |
c906108c SS |
7894 | } |
7895 | \f | |
7896 | /* Call FUNCTION on each of the breakpoints | |
7897 | whose numbers are given in ARGS. */ | |
7898 | ||
7899 | static void | |
831662b3 | 7900 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) |
c906108c | 7901 | { |
52f0bd74 | 7902 | char *p = args; |
c906108c | 7903 | char *p1; |
52f0bd74 AC |
7904 | int num; |
7905 | struct breakpoint *b, *tmp; | |
11cf8741 | 7906 | int match; |
c906108c SS |
7907 | |
7908 | if (p == 0) | |
e2e0b3e5 | 7909 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c SS |
7910 | |
7911 | while (*p) | |
7912 | { | |
11cf8741 | 7913 | match = 0; |
c906108c | 7914 | p1 = p; |
c5aa993b | 7915 | |
5c44784c JM |
7916 | num = get_number_or_range (&p1); |
7917 | if (num == 0) | |
c5aa993b | 7918 | { |
8a3fe4f8 | 7919 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
7920 | } |
7921 | else | |
7922 | { | |
7923 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
7924 | if (b->number == num) | |
7925 | { | |
7926 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 7927 | match = 1; |
5c44784c JM |
7928 | function (b); |
7929 | if (related_breakpoint) | |
7930 | function (related_breakpoint); | |
11cf8741 | 7931 | break; |
5c44784c | 7932 | } |
11cf8741 | 7933 | if (match == 0) |
a3f17187 | 7934 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 7935 | } |
c906108c SS |
7936 | p = p1; |
7937 | } | |
7938 | } | |
7939 | ||
0d381245 VP |
7940 | static struct bp_location * |
7941 | find_location_by_number (char *number) | |
7942 | { | |
7943 | char *dot = strchr (number, '.'); | |
7944 | char *p1; | |
7945 | int bp_num; | |
7946 | int loc_num; | |
7947 | struct breakpoint *b; | |
7948 | struct bp_location *loc; | |
7949 | ||
7950 | *dot = '\0'; | |
7951 | ||
7952 | p1 = number; | |
7953 | bp_num = get_number_or_range (&p1); | |
7954 | if (bp_num == 0) | |
7955 | error (_("Bad breakpoint number '%s'"), number); | |
7956 | ||
7957 | ALL_BREAKPOINTS (b) | |
7958 | if (b->number == bp_num) | |
7959 | { | |
7960 | break; | |
7961 | } | |
7962 | ||
7963 | if (!b || b->number != bp_num) | |
7964 | error (_("Bad breakpoint number '%s'"), number); | |
7965 | ||
7966 | p1 = dot+1; | |
7967 | loc_num = get_number_or_range (&p1); | |
7968 | if (loc_num == 0) | |
7969 | error (_("Bad breakpoint location number '%s'"), number); | |
7970 | ||
7971 | --loc_num; | |
7972 | loc = b->loc; | |
7973 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
7974 | ; | |
7975 | if (!loc) | |
7976 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
7977 | ||
7978 | return loc; | |
7979 | } | |
7980 | ||
7981 | ||
1900040c MS |
7982 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7983 | If from_tty is nonzero, it prints a message to that effect, | |
7984 | which ends with a period (no newline). */ | |
7985 | ||
c906108c | 7986 | void |
fba45db2 | 7987 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7988 | { |
7989 | /* Never disable a watchpoint scope breakpoint; we want to | |
7990 | hit them when we leave scope so we can delete both the | |
7991 | watchpoint and its scope breakpoint at that time. */ | |
7992 | if (bpt->type == bp_watchpoint_scope) | |
7993 | return; | |
7994 | ||
c2c6d25f | 7995 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 7996 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
7997 | return; |
7998 | ||
b5de0fa7 | 7999 | bpt->enable_state = bp_disabled; |
c906108c | 8000 | |
b60e7edf | 8001 | update_global_location_list (0); |
c906108c | 8002 | |
383f836e | 8003 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
8004 | } |
8005 | ||
c906108c | 8006 | static void |
fba45db2 | 8007 | disable_command (char *args, int from_tty) |
c906108c | 8008 | { |
52f0bd74 | 8009 | struct breakpoint *bpt; |
c906108c SS |
8010 | if (args == 0) |
8011 | ALL_BREAKPOINTS (bpt) | |
8012 | switch (bpt->type) | |
c5aa993b JM |
8013 | { |
8014 | case bp_none: | |
8a3fe4f8 | 8015 | warning (_("attempted to disable apparently deleted breakpoint #%d?"), |
53a5351d | 8016 | bpt->number); |
c5aa993b JM |
8017 | continue; |
8018 | case bp_breakpoint: | |
1042e4c0 | 8019 | case bp_tracepoint: |
ce78b96d | 8020 | case bp_catchpoint: |
c5aa993b JM |
8021 | case bp_hardware_breakpoint: |
8022 | case bp_watchpoint: | |
8023 | case bp_hardware_watchpoint: | |
8024 | case bp_read_watchpoint: | |
8025 | case bp_access_watchpoint: | |
8026 | disable_breakpoint (bpt); | |
8027 | default: | |
8028 | continue; | |
8029 | } | |
0d381245 VP |
8030 | else if (strchr (args, '.')) |
8031 | { | |
8032 | struct bp_location *loc = find_location_by_number (args); | |
8033 | if (loc) | |
8034 | loc->enabled = 0; | |
b60e7edf | 8035 | update_global_location_list (0); |
0d381245 | 8036 | } |
c906108c SS |
8037 | else |
8038 | map_breakpoint_numbers (args, disable_breakpoint); | |
8039 | } | |
8040 | ||
8041 | static void | |
fba45db2 | 8042 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 8043 | { |
c906108c SS |
8044 | int target_resources_ok, other_type_used; |
8045 | struct value *mark; | |
8046 | ||
8047 | if (bpt->type == bp_hardware_breakpoint) | |
8048 | { | |
8049 | int i; | |
c5aa993b | 8050 | i = hw_breakpoint_used_count (); |
53a5351d | 8051 | target_resources_ok = |
d92524f1 | 8052 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 8053 | i + 1, 0); |
c906108c | 8054 | if (target_resources_ok == 0) |
8a3fe4f8 | 8055 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 8056 | else if (target_resources_ok < 0) |
8a3fe4f8 | 8057 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
8058 | } |
8059 | ||
059fb39f PM |
8060 | if (bpt->type == bp_watchpoint |
8061 | || bpt->type == bp_hardware_watchpoint | |
8062 | || bpt->type == bp_read_watchpoint | |
8063 | || bpt->type == bp_access_watchpoint) | |
c906108c | 8064 | { |
dde02812 ES |
8065 | struct gdb_exception e; |
8066 | ||
8067 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 8068 | { |
dde02812 | 8069 | update_watchpoint (bpt, 1 /* reparse */); |
c906108c | 8070 | } |
dde02812 | 8071 | if (e.reason < 0) |
c5aa993b | 8072 | { |
dde02812 ES |
8073 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
8074 | bpt->number); | |
8075 | return; | |
c5aa993b | 8076 | } |
c906108c | 8077 | } |
0101ce28 | 8078 | |
b4c291bb KH |
8079 | if (bpt->enable_state != bp_permanent) |
8080 | bpt->enable_state = bp_enabled; | |
8081 | bpt->disposition = disposition; | |
b60e7edf | 8082 | update_global_location_list (1); |
b4c291bb KH |
8083 | breakpoints_changed (); |
8084 | ||
383f836e | 8085 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
8086 | } |
8087 | ||
fe3f5fa8 | 8088 | |
c906108c | 8089 | void |
fba45db2 | 8090 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
8091 | { |
8092 | do_enable_breakpoint (bpt, bpt->disposition); | |
8093 | } | |
8094 | ||
8095 | /* The enable command enables the specified breakpoints (or all defined | |
8096 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 8097 | in stopping the inferior. */ |
c906108c | 8098 | |
c906108c | 8099 | static void |
fba45db2 | 8100 | enable_command (char *args, int from_tty) |
c906108c | 8101 | { |
52f0bd74 | 8102 | struct breakpoint *bpt; |
c906108c SS |
8103 | if (args == 0) |
8104 | ALL_BREAKPOINTS (bpt) | |
8105 | switch (bpt->type) | |
c5aa993b JM |
8106 | { |
8107 | case bp_none: | |
8a3fe4f8 | 8108 | warning (_("attempted to enable apparently deleted breakpoint #%d?"), |
53a5351d | 8109 | bpt->number); |
c5aa993b JM |
8110 | continue; |
8111 | case bp_breakpoint: | |
1042e4c0 | 8112 | case bp_tracepoint: |
ce78b96d | 8113 | case bp_catchpoint: |
c5aa993b JM |
8114 | case bp_hardware_breakpoint: |
8115 | case bp_watchpoint: | |
8116 | case bp_hardware_watchpoint: | |
8117 | case bp_read_watchpoint: | |
8118 | case bp_access_watchpoint: | |
8119 | enable_breakpoint (bpt); | |
8120 | default: | |
8121 | continue; | |
8122 | } | |
0d381245 VP |
8123 | else if (strchr (args, '.')) |
8124 | { | |
8125 | struct bp_location *loc = find_location_by_number (args); | |
8126 | if (loc) | |
8127 | loc->enabled = 1; | |
b60e7edf | 8128 | update_global_location_list (1); |
0d381245 | 8129 | } |
c906108c SS |
8130 | else |
8131 | map_breakpoint_numbers (args, enable_breakpoint); | |
8132 | } | |
8133 | ||
8134 | static void | |
fba45db2 | 8135 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c | 8136 | { |
b5de0fa7 | 8137 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
8138 | } |
8139 | ||
c906108c | 8140 | static void |
fba45db2 | 8141 | enable_once_command (char *args, int from_tty) |
c906108c SS |
8142 | { |
8143 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
8144 | } | |
8145 | ||
8146 | static void | |
fba45db2 | 8147 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c | 8148 | { |
b5de0fa7 | 8149 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
8150 | } |
8151 | ||
c906108c | 8152 | static void |
fba45db2 | 8153 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
8154 | { |
8155 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
8156 | } | |
8157 | \f | |
fa8d40ab JJ |
8158 | static void |
8159 | set_breakpoint_cmd (char *args, int from_tty) | |
8160 | { | |
8161 | } | |
8162 | ||
8163 | static void | |
8164 | show_breakpoint_cmd (char *args, int from_tty) | |
8165 | { | |
8166 | } | |
8167 | ||
c906108c SS |
8168 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
8169 | ||
8170 | struct symtabs_and_lines | |
fba45db2 | 8171 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
8172 | { |
8173 | struct symtabs_and_lines sals; | |
8174 | if (string == 0) | |
8a3fe4f8 | 8175 | error (_("Empty line specification.")); |
c906108c SS |
8176 | if (default_breakpoint_valid) |
8177 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
8178 | default_breakpoint_symtab, |
8179 | default_breakpoint_line, | |
68219205 | 8180 | (char ***) NULL, NULL); |
c906108c SS |
8181 | else |
8182 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 8183 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c | 8184 | if (*string) |
8a3fe4f8 | 8185 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
8186 | return sals; |
8187 | } | |
8181d85f DJ |
8188 | |
8189 | /* Create and insert a raw software breakpoint at PC. Return an | |
8190 | identifier, which should be used to remove the breakpoint later. | |
8191 | In general, places which call this should be using something on the | |
8192 | breakpoint chain instead; this function should be eliminated | |
8193 | someday. */ | |
8194 | ||
8195 | void * | |
8196 | deprecated_insert_raw_breakpoint (CORE_ADDR pc) | |
8197 | { | |
8198 | struct bp_target_info *bp_tgt; | |
8199 | ||
8200 | bp_tgt = xmalloc (sizeof (struct bp_target_info)); | |
8201 | memset (bp_tgt, 0, sizeof (struct bp_target_info)); | |
8202 | ||
8203 | bp_tgt->placed_address = pc; | |
8204 | if (target_insert_breakpoint (bp_tgt) != 0) | |
8205 | { | |
8206 | /* Could not insert the breakpoint. */ | |
8207 | xfree (bp_tgt); | |
8208 | return NULL; | |
8209 | } | |
8210 | ||
8211 | return bp_tgt; | |
8212 | } | |
8213 | ||
8214 | /* Remove a breakpoint BP inserted by deprecated_insert_raw_breakpoint. */ | |
8215 | ||
8216 | int | |
8217 | deprecated_remove_raw_breakpoint (void *bp) | |
8218 | { | |
8219 | struct bp_target_info *bp_tgt = bp; | |
8220 | int ret; | |
8221 | ||
8222 | ret = target_remove_breakpoint (bp_tgt); | |
8223 | xfree (bp_tgt); | |
8224 | ||
8225 | return ret; | |
8226 | } | |
8227 | ||
8228 | /* One (or perhaps two) breakpoints used for software single stepping. */ | |
8229 | ||
8230 | static void *single_step_breakpoints[2]; | |
8231 | ||
8232 | /* Create and insert a breakpoint for software single step. */ | |
8233 | ||
8234 | void | |
8235 | insert_single_step_breakpoint (CORE_ADDR next_pc) | |
8236 | { | |
8237 | void **bpt_p; | |
8238 | ||
8239 | if (single_step_breakpoints[0] == NULL) | |
8240 | bpt_p = &single_step_breakpoints[0]; | |
8241 | else | |
8242 | { | |
8243 | gdb_assert (single_step_breakpoints[1] == NULL); | |
8244 | bpt_p = &single_step_breakpoints[1]; | |
8245 | } | |
8246 | ||
8247 | /* NOTE drow/2006-04-11: A future improvement to this function would be | |
8248 | to only create the breakpoints once, and actually put them on the | |
8249 | breakpoint chain. That would let us use set_raw_breakpoint. We could | |
8250 | adjust the addresses each time they were needed. Doing this requires | |
8251 | corresponding changes elsewhere where single step breakpoints are | |
8252 | handled, however. So, for now, we use this. */ | |
8253 | ||
8254 | *bpt_p = deprecated_insert_raw_breakpoint (next_pc); | |
8255 | if (*bpt_p == NULL) | |
1893a4c0 | 8256 | error (_("Could not insert single-step breakpoint at 0x%s"), |
8181d85f DJ |
8257 | paddr_nz (next_pc)); |
8258 | } | |
8259 | ||
8260 | /* Remove and delete any breakpoints used for software single step. */ | |
8261 | ||
8262 | void | |
8263 | remove_single_step_breakpoints (void) | |
8264 | { | |
8265 | gdb_assert (single_step_breakpoints[0] != NULL); | |
8266 | ||
8267 | /* See insert_single_step_breakpoint for more about this deprecated | |
8268 | call. */ | |
8269 | deprecated_remove_raw_breakpoint (single_step_breakpoints[0]); | |
8270 | single_step_breakpoints[0] = NULL; | |
8271 | ||
8272 | if (single_step_breakpoints[1] != NULL) | |
8273 | { | |
8274 | deprecated_remove_raw_breakpoint (single_step_breakpoints[1]); | |
8275 | single_step_breakpoints[1] = NULL; | |
8276 | } | |
8277 | } | |
8278 | ||
1aafd4da UW |
8279 | /* Check whether a software single-step breakpoint is inserted at PC. */ |
8280 | ||
8281 | static int | |
8282 | single_step_breakpoint_inserted_here_p (CORE_ADDR pc) | |
8283 | { | |
8284 | int i; | |
8285 | ||
8286 | for (i = 0; i < 2; i++) | |
8287 | { | |
8288 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
8289 | if (bp_tgt && bp_tgt->placed_address == pc) | |
8290 | return 1; | |
8291 | } | |
8292 | ||
8293 | return 0; | |
8294 | } | |
8295 | ||
1042e4c0 SS |
8296 | /* Tracepoint-specific operations. */ |
8297 | ||
8298 | /* Set tracepoint count to NUM. */ | |
8299 | static void | |
8300 | set_tracepoint_count (int num) | |
8301 | { | |
8302 | tracepoint_count = num; | |
4fa62494 | 8303 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
8304 | } |
8305 | ||
8306 | void | |
8307 | trace_command (char *arg, int from_tty) | |
8308 | { | |
8309 | break_command_really (arg, | |
8310 | NULL, 0, 1 /* parse arg */, | |
8311 | 0 /* tempflag */, 0 /* hardwareflag */, | |
8312 | 1 /* traceflag */, | |
8313 | 0 /* Ignore count */, | |
8314 | pending_break_support, | |
8315 | NULL, | |
8316 | from_tty, | |
8317 | 1 /* enabled */); | |
8318 | set_tracepoint_count (breakpoint_count); | |
8319 | } | |
8320 | ||
8321 | /* Print information on tracepoint number TPNUM_EXP, or all if | |
8322 | omitted. */ | |
8323 | ||
8324 | static void | |
8325 | tracepoints_info (char *tpnum_exp, int from_tty) | |
8326 | { | |
8327 | struct breakpoint *b; | |
8328 | int tps_to_list = 0; | |
8329 | ||
8330 | /* In the no-arguments case, say "No tracepoints" if none found. */ | |
8331 | if (tpnum_exp == 0) | |
8332 | { | |
8333 | ALL_TRACEPOINTS (b) | |
8334 | { | |
8335 | if (b->number >= 0) | |
8336 | { | |
8337 | tps_to_list = 1; | |
8338 | break; | |
8339 | } | |
8340 | } | |
8341 | if (!tps_to_list) | |
8342 | { | |
8343 | ui_out_message (uiout, 0, "No tracepoints.\n"); | |
8344 | return; | |
8345 | } | |
8346 | } | |
8347 | ||
8348 | /* Otherwise be the same as "info break". */ | |
8349 | breakpoints_info (tpnum_exp, from_tty); | |
8350 | } | |
8351 | ||
8352 | /* The 'enable trace' command enables tracepoints. | |
8353 | Not supported by all targets. */ | |
8354 | static void | |
8355 | enable_trace_command (char *args, int from_tty) | |
8356 | { | |
8357 | enable_command (args, from_tty); | |
8358 | } | |
8359 | ||
8360 | /* The 'disable trace' command disables tracepoints. | |
8361 | Not supported by all targets. */ | |
8362 | static void | |
8363 | disable_trace_command (char *args, int from_tty) | |
8364 | { | |
8365 | disable_command (args, from_tty); | |
8366 | } | |
8367 | ||
8368 | /* Remove a tracepoint (or all if no argument) */ | |
8369 | static void | |
8370 | delete_trace_command (char *arg, int from_tty) | |
8371 | { | |
8372 | struct breakpoint *b, *temp; | |
8373 | ||
8374 | dont_repeat (); | |
8375 | ||
8376 | if (arg == 0) | |
8377 | { | |
8378 | int breaks_to_delete = 0; | |
8379 | ||
8380 | /* Delete all breakpoints if no argument. | |
8381 | Do not delete internal or call-dummy breakpoints, these | |
8382 | have to be deleted with an explicit breakpoint number argument. */ | |
8383 | ALL_TRACEPOINTS (b) | |
8384 | { | |
8385 | if (b->number >= 0) | |
8386 | { | |
8387 | breaks_to_delete = 1; | |
8388 | break; | |
8389 | } | |
8390 | } | |
8391 | ||
8392 | /* Ask user only if there are some breakpoints to delete. */ | |
8393 | if (!from_tty | |
8394 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
8395 | { | |
8396 | ALL_BREAKPOINTS_SAFE (b, temp) | |
8397 | { | |
059fb39f PM |
8398 | if (b->type == bp_tracepoint |
8399 | && b->number >= 0) | |
1042e4c0 SS |
8400 | delete_breakpoint (b); |
8401 | } | |
8402 | } | |
8403 | } | |
8404 | else | |
8405 | map_breakpoint_numbers (arg, delete_breakpoint); | |
8406 | } | |
8407 | ||
8408 | /* Set passcount for tracepoint. | |
8409 | ||
8410 | First command argument is passcount, second is tracepoint number. | |
8411 | If tracepoint number omitted, apply to most recently defined. | |
8412 | Also accepts special argument "all". */ | |
8413 | ||
8414 | static void | |
8415 | trace_pass_command (char *args, int from_tty) | |
8416 | { | |
8417 | struct breakpoint *t1 = (struct breakpoint *) -1, *t2; | |
8418 | unsigned int count; | |
8419 | int all = 0; | |
8420 | ||
8421 | if (args == 0 || *args == 0) | |
8422 | error (_("passcount command requires an argument (count + optional TP num)")); | |
8423 | ||
8424 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ | |
8425 | ||
8426 | while (*args && isspace ((int) *args)) | |
8427 | args++; | |
8428 | ||
8429 | if (*args && strncasecmp (args, "all", 3) == 0) | |
8430 | { | |
8431 | args += 3; /* Skip special argument "all". */ | |
8432 | all = 1; | |
8433 | if (*args) | |
8434 | error (_("Junk at end of arguments.")); | |
8435 | } | |
8436 | else | |
8437 | t1 = get_tracepoint_by_number (&args, 1, 1); | |
8438 | ||
8439 | do | |
8440 | { | |
8441 | if (t1) | |
8442 | { | |
8443 | ALL_TRACEPOINTS (t2) | |
8444 | if (t1 == (struct breakpoint *) -1 || t1 == t2) | |
8445 | { | |
8446 | t2->pass_count = count; | |
8447 | observer_notify_tracepoint_modified (t2->number); | |
8448 | if (from_tty) | |
8449 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
8450 | t2->number, count); | |
8451 | } | |
8452 | if (! all && *args) | |
8453 | t1 = get_tracepoint_by_number (&args, 1, 0); | |
8454 | } | |
8455 | } | |
8456 | while (*args); | |
8457 | } | |
8458 | ||
8459 | struct breakpoint * | |
8460 | get_tracepoint (int num) | |
8461 | { | |
8462 | struct breakpoint *t; | |
8463 | ||
8464 | ALL_TRACEPOINTS (t) | |
8465 | if (t->number == num) | |
8466 | return t; | |
8467 | ||
8468 | return NULL; | |
8469 | } | |
8470 | ||
8471 | /* Utility: parse a tracepoint number and look it up in the list. | |
8472 | If MULTI_P is true, there might be a range of tracepoints in ARG. | |
8473 | if OPTIONAL_P is true, then if the argument is missing, the most | |
8474 | recent tracepoint (tracepoint_count) is returned. */ | |
8475 | struct breakpoint * | |
8476 | get_tracepoint_by_number (char **arg, int multi_p, int optional_p) | |
8477 | { | |
8478 | extern int tracepoint_count; | |
8479 | struct breakpoint *t; | |
8480 | int tpnum; | |
8481 | char *instring = arg == NULL ? NULL : *arg; | |
8482 | ||
8483 | if (arg == NULL || *arg == NULL || ! **arg) | |
8484 | { | |
8485 | if (optional_p) | |
8486 | tpnum = tracepoint_count; | |
8487 | else | |
8488 | error_no_arg (_("tracepoint number")); | |
8489 | } | |
8490 | else | |
8491 | tpnum = multi_p ? get_number_or_range (arg) : get_number (arg); | |
8492 | ||
8493 | if (tpnum <= 0) | |
8494 | { | |
8495 | if (instring && *instring) | |
8496 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
8497 | instring); | |
8498 | else | |
8499 | printf_filtered (_("Tracepoint argument missing and no previous tracepoint\n")); | |
8500 | return NULL; | |
8501 | } | |
8502 | ||
8503 | ALL_TRACEPOINTS (t) | |
8504 | if (t->number == tpnum) | |
8505 | { | |
8506 | return t; | |
8507 | } | |
8508 | ||
8509 | /* FIXME: if we are in the middle of a range we don't want to give | |
8510 | a message. The current interface to get_number_or_range doesn't | |
8511 | allow us to discover this. */ | |
8512 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); | |
8513 | return NULL; | |
8514 | } | |
8515 | ||
8516 | /* save-tracepoints command */ | |
8517 | static void | |
8518 | tracepoint_save_command (char *args, int from_tty) | |
8519 | { | |
8520 | struct breakpoint *tp; | |
8521 | int any_tp = 0; | |
8522 | struct action_line *line; | |
8523 | FILE *fp; | |
8524 | char *i1 = " ", *i2 = " "; | |
8525 | char *indent, *actionline, *pathname; | |
8526 | char tmp[40]; | |
8527 | struct cleanup *cleanup; | |
8528 | ||
8529 | if (args == 0 || *args == 0) | |
8530 | error (_("Argument required (file name in which to save tracepoints)")); | |
8531 | ||
8532 | /* See if we have anything to save. */ | |
8533 | ALL_TRACEPOINTS (tp) | |
8534 | { | |
8535 | any_tp = 1; | |
8536 | break; | |
8537 | } | |
8538 | if (!any_tp) | |
8539 | { | |
8540 | warning (_("save-tracepoints: no tracepoints to save.")); | |
8541 | return; | |
8542 | } | |
8543 | ||
8544 | pathname = tilde_expand (args); | |
8545 | cleanup = make_cleanup (xfree, pathname); | |
059fb39f PM |
8546 | fp = fopen (pathname, "w"); |
8547 | if (!fp) | |
1042e4c0 SS |
8548 | error (_("Unable to open file '%s' for saving tracepoints (%s)"), |
8549 | args, safe_strerror (errno)); | |
8550 | make_cleanup_fclose (fp); | |
8551 | ||
8552 | ALL_TRACEPOINTS (tp) | |
8553 | { | |
8554 | if (tp->addr_string) | |
8555 | fprintf (fp, "trace %s\n", tp->addr_string); | |
8556 | else | |
8557 | { | |
8558 | sprintf_vma (tmp, tp->loc->address); | |
8559 | fprintf (fp, "trace *0x%s\n", tmp); | |
8560 | } | |
8561 | ||
8562 | if (tp->pass_count) | |
8563 | fprintf (fp, " passcount %d\n", tp->pass_count); | |
8564 | ||
8565 | if (tp->actions) | |
8566 | { | |
8567 | fprintf (fp, " actions\n"); | |
8568 | indent = i1; | |
8569 | for (line = tp->actions; line; line = line->next) | |
8570 | { | |
8571 | struct cmd_list_element *cmd; | |
8572 | ||
8573 | QUIT; /* allow user to bail out with ^C */ | |
8574 | actionline = line->action; | |
8575 | while (isspace ((int) *actionline)) | |
8576 | actionline++; | |
8577 | ||
8578 | fprintf (fp, "%s%s\n", indent, actionline); | |
8579 | if (*actionline != '#') /* skip for comment lines */ | |
8580 | { | |
8581 | cmd = lookup_cmd (&actionline, cmdlist, "", -1, 1); | |
8582 | if (cmd == 0) | |
8583 | error (_("Bad action list item: %s"), actionline); | |
8584 | if (cmd_cfunc_eq (cmd, while_stepping_pseudocommand)) | |
8585 | indent = i2; | |
8586 | else if (cmd_cfunc_eq (cmd, end_actions_pseudocommand)) | |
8587 | indent = i1; | |
8588 | } | |
8589 | } | |
8590 | } | |
8591 | } | |
8592 | do_cleanups (cleanup); | |
8593 | if (from_tty) | |
8594 | printf_filtered (_("Tracepoints saved to file '%s'.\n"), args); | |
8595 | return; | |
8596 | } | |
8597 | ||
8598 | /* Create a vector of all tracepoints. */ | |
8599 | ||
8600 | VEC(breakpoint_p) * | |
8601 | all_tracepoints () | |
8602 | { | |
8603 | VEC(breakpoint_p) *tp_vec = 0; | |
8604 | struct breakpoint *tp; | |
8605 | ||
8606 | ALL_TRACEPOINTS (tp) | |
8607 | { | |
8608 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
8609 | } | |
8610 | ||
8611 | return tp_vec; | |
8612 | } | |
8613 | ||
c906108c | 8614 | \f |
31e2b00f AS |
8615 | /* This help string is used for the break, hbreak, tbreak and thbreak commands. |
8616 | It is defined as a macro to prevent duplication. | |
8617 | COMMAND should be a string constant containing the name of the command. */ | |
8618 | #define BREAK_ARGS_HELP(command) \ | |
8619 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
8620 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
8621 | If a line number is specified, break at start of code for that line.\n\ | |
8622 | If a function is specified, break at start of code for that function.\n\ | |
8623 | If an address is specified, break at that exact address.\n\ | |
8624 | With no LOCATION, uses current execution address of selected stack frame.\n\ | |
8625 | This is useful for breaking on return to a stack frame.\n\ | |
8626 | \n\ | |
8627 | THREADNUM is the number from \"info threads\".\n\ | |
8628 | CONDITION is a boolean expression.\n\ | |
8629 | \n\ | |
8630 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
8631 | \n\ | |
8632 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
8633 | ||
44feb3ce TT |
8634 | /* List of subcommands for "catch". */ |
8635 | static struct cmd_list_element *catch_cmdlist; | |
8636 | ||
8637 | /* List of subcommands for "tcatch". */ | |
8638 | static struct cmd_list_element *tcatch_cmdlist; | |
8639 | ||
8640 | /* Like add_cmd, but add the command to both the "catch" and "tcatch" | |
8641 | lists, and pass some additional user data to the command function. */ | |
8642 | static void | |
8643 | add_catch_command (char *name, char *docstring, | |
8644 | void (*sfunc) (char *args, int from_tty, | |
8645 | struct cmd_list_element *command), | |
8646 | void *user_data_catch, | |
8647 | void *user_data_tcatch) | |
8648 | { | |
8649 | struct cmd_list_element *command; | |
8650 | ||
8651 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
8652 | &catch_cmdlist); | |
8653 | set_cmd_sfunc (command, sfunc); | |
8654 | set_cmd_context (command, user_data_catch); | |
8655 | ||
8656 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
8657 | &tcatch_cmdlist); | |
8658 | set_cmd_sfunc (command, sfunc); | |
8659 | set_cmd_context (command, user_data_tcatch); | |
8660 | } | |
8661 | ||
c906108c | 8662 | void |
fba45db2 | 8663 | _initialize_breakpoint (void) |
c906108c | 8664 | { |
fa8d40ab JJ |
8665 | static struct cmd_list_element *breakpoint_set_cmdlist; |
8666 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
c906108c SS |
8667 | struct cmd_list_element *c; |
8668 | ||
84acb35a | 8669 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
84acb35a | 8670 | |
c906108c SS |
8671 | breakpoint_chain = 0; |
8672 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
8673 | before a breakpoint is set. */ | |
8674 | breakpoint_count = 0; | |
8675 | ||
1042e4c0 SS |
8676 | tracepoint_count = 0; |
8677 | ||
1bedd215 AC |
8678 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
8679 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
8680 | Usage is `ignore N COUNT'.")); | |
c906108c | 8681 | if (xdb_commands) |
c5aa993b | 8682 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 8683 | |
1bedd215 AC |
8684 | add_com ("commands", class_breakpoint, commands_command, _("\ |
8685 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
8686 | Give breakpoint number as argument after \"commands\".\n\ |
8687 | With no argument, the targeted breakpoint is the last one set.\n\ | |
8688 | The commands themselves follow starting on the next line.\n\ | |
8689 | Type a line containing \"end\" to indicate the end of them.\n\ | |
8690 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 8691 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 8692 | |
1bedd215 AC |
8693 | add_com ("condition", class_breakpoint, condition_command, _("\ |
8694 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 8695 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 8696 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 8697 | |
1bedd215 | 8698 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 8699 | Set a temporary breakpoint.\n\ |
c906108c SS |
8700 | Like \"break\" except the breakpoint is only temporary,\n\ |
8701 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
8702 | by using \"enable delete\" on the breakpoint number.\n\ |
8703 | \n" | |
8704 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 8705 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 8706 | |
1bedd215 | 8707 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
31e2b00f | 8708 | Set a hardware assisted breakpoint.\n\ |
c906108c | 8709 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
8710 | some target hardware may not have this support.\n\ |
8711 | \n" | |
8712 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 8713 | set_cmd_completer (c, location_completer); |
c906108c | 8714 | |
1bedd215 | 8715 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 8716 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 8717 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
8718 | so it will be deleted when hit.\n\ |
8719 | \n" | |
8720 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 8721 | set_cmd_completer (c, location_completer); |
c906108c | 8722 | |
1bedd215 AC |
8723 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
8724 | Enable some breakpoints.\n\ | |
c906108c SS |
8725 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8726 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8727 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8728 | With a subcommand you can enable temporarily."), |
c906108c SS |
8729 | &enablelist, "enable ", 1, &cmdlist); |
8730 | if (xdb_commands) | |
1bedd215 AC |
8731 | add_com ("ab", class_breakpoint, enable_command, _("\ |
8732 | Enable some breakpoints.\n\ | |
c906108c SS |
8733 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8734 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8735 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8736 | With a subcommand you can enable temporarily.")); |
c906108c SS |
8737 | |
8738 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
8739 | ||
1bedd215 AC |
8740 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
8741 | Enable some breakpoints.\n\ | |
c906108c SS |
8742 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8743 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8744 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 8745 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 8746 | |
1a966eab AC |
8747 | add_cmd ("once", no_class, enable_once_command, _("\ |
8748 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8749 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8750 | &enablebreaklist); |
8751 | ||
1a966eab AC |
8752 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8753 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8754 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8755 | &enablebreaklist); |
8756 | ||
1a966eab AC |
8757 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8758 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8759 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8760 | &enablelist); |
8761 | ||
1a966eab AC |
8762 | add_cmd ("once", no_class, enable_once_command, _("\ |
8763 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8764 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8765 | &enablelist); |
8766 | ||
1bedd215 AC |
8767 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
8768 | Disable some breakpoints.\n\ | |
c906108c SS |
8769 | Arguments are breakpoint numbers with spaces in between.\n\ |
8770 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 8771 | A disabled breakpoint is not forgotten, but has no effect until reenabled."), |
c906108c SS |
8772 | &disablelist, "disable ", 1, &cmdlist); |
8773 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
8774 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
8775 | if (xdb_commands) | |
1bedd215 AC |
8776 | add_com ("sb", class_breakpoint, disable_command, _("\ |
8777 | Disable some breakpoints.\n\ | |
c906108c SS |
8778 | Arguments are breakpoint numbers with spaces in between.\n\ |
8779 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 8780 | A disabled breakpoint is not forgotten, but has no effect until reenabled.")); |
c906108c | 8781 | |
1a966eab AC |
8782 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
8783 | Disable some breakpoints.\n\ | |
c906108c SS |
8784 | Arguments are breakpoint numbers with spaces in between.\n\ |
8785 | To disable all breakpoints, give no argument.\n\ | |
8786 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
1a966eab | 8787 | This command may be abbreviated \"disable\"."), |
c906108c SS |
8788 | &disablelist); |
8789 | ||
1bedd215 AC |
8790 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
8791 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
8792 | Arguments are breakpoint numbers with spaces in between.\n\ |
8793 | To delete all breakpoints, give no argument.\n\ | |
8794 | \n\ | |
8795 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 8796 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
8797 | &deletelist, "delete ", 1, &cmdlist); |
8798 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 8799 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 8800 | if (xdb_commands) |
1bedd215 AC |
8801 | add_com ("db", class_breakpoint, delete_command, _("\ |
8802 | Delete some breakpoints.\n\ | |
c906108c | 8803 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 8804 | To delete all breakpoints, give no argument.\n")); |
c906108c | 8805 | |
1a966eab AC |
8806 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
8807 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
8808 | Arguments are breakpoint numbers with spaces in between.\n\ |
8809 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 8810 | This command may be abbreviated \"delete\"."), |
c906108c SS |
8811 | &deletelist); |
8812 | ||
1bedd215 AC |
8813 | add_com ("clear", class_breakpoint, clear_command, _("\ |
8814 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
8815 | Argument may be line number, function name, or \"*\" and an address.\n\ |
8816 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
8817 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
8818 | If an address is specified, breakpoints at that address are cleared.\n\ |
8819 | \n\ | |
8820 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
8821 | is executing in.\n\ |
8822 | \n\ | |
1bedd215 | 8823 | See also the \"delete\" command which clears breakpoints by number.")); |
c906108c | 8824 | |
1bedd215 | 8825 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
8826 | Set breakpoint at specified line or function.\n" |
8827 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 8828 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 8829 | |
c906108c SS |
8830 | add_com_alias ("b", "break", class_run, 1); |
8831 | add_com_alias ("br", "break", class_run, 1); | |
8832 | add_com_alias ("bre", "break", class_run, 1); | |
8833 | add_com_alias ("brea", "break", class_run, 1); | |
8834 | ||
7681d515 PM |
8835 | if (xdb_commands) |
8836 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
c906108c SS |
8837 | |
8838 | if (dbx_commands) | |
8839 | { | |
1bedd215 AC |
8840 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
8841 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
8842 | &stoplist, "stop ", 1, &cmdlist); |
8843 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 8844 | _("Break in function or address."), &stoplist); |
c5aa993b | 8845 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 8846 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
8847 | add_com ("status", class_info, breakpoints_info, _("\ |
8848 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8849 | The \"Type\" column indicates one of:\n\ |
8850 | \tbreakpoint - normal breakpoint\n\ | |
8851 | \twatchpoint - watchpoint\n\ | |
8852 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8853 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8854 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8855 | address and file/line number respectively.\n\ |
8856 | \n\ | |
8857 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8858 | are set to the address of the last breakpoint listed unless the command\n\ |
8859 | is prefixed with \"server \".\n\n\ | |
c906108c | 8860 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8861 | breakpoint set.")); |
c906108c SS |
8862 | } |
8863 | ||
1bedd215 AC |
8864 | add_info ("breakpoints", breakpoints_info, _("\ |
8865 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8866 | The \"Type\" column indicates one of:\n\ |
8867 | \tbreakpoint - normal breakpoint\n\ | |
8868 | \twatchpoint - watchpoint\n\ | |
8869 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8870 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8871 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8872 | address and file/line number respectively.\n\ |
8873 | \n\ | |
8874 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8875 | are set to the address of the last breakpoint listed unless the command\n\ |
8876 | is prefixed with \"server \".\n\n\ | |
c906108c | 8877 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8878 | breakpoint set.")); |
c906108c SS |
8879 | |
8880 | if (xdb_commands) | |
1bedd215 AC |
8881 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
8882 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8883 | The \"Type\" column indicates one of:\n\ |
8884 | \tbreakpoint - normal breakpoint\n\ | |
8885 | \twatchpoint - watchpoint\n\ | |
8886 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8887 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8888 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8889 | address and file/line number respectively.\n\ |
8890 | \n\ | |
8891 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8892 | are set to the address of the last breakpoint listed unless the command\n\ |
8893 | is prefixed with \"server \".\n\n\ | |
c906108c | 8894 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8895 | breakpoint set.")); |
c906108c | 8896 | |
1a966eab AC |
8897 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
8898 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8899 | The \"Type\" column indicates one of:\n\ |
8900 | \tbreakpoint - normal breakpoint\n\ | |
8901 | \twatchpoint - watchpoint\n\ | |
8902 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
8903 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
8904 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
8905 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
8906 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
8907 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
8908 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
8909 | address and file/line number respectively.\n\ |
8910 | \n\ | |
8911 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8912 | are set to the address of the last breakpoint listed unless the command\n\ |
8913 | is prefixed with \"server \".\n\n\ | |
c906108c | 8914 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 8915 | breakpoint set."), |
c906108c SS |
8916 | &maintenanceinfolist); |
8917 | ||
44feb3ce TT |
8918 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
8919 | Set catchpoints to catch events."), | |
8920 | &catch_cmdlist, "catch ", | |
8921 | 0/*allow-unknown*/, &cmdlist); | |
8922 | ||
8923 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
8924 | Set temporary catchpoints to catch events."), | |
8925 | &tcatch_cmdlist, "tcatch ", | |
8926 | 0/*allow-unknown*/, &cmdlist); | |
8927 | ||
8928 | /* Add catch and tcatch sub-commands. */ | |
8929 | add_catch_command ("catch", _("\ | |
8930 | Catch an exception, when caught.\n\ | |
8931 | With an argument, catch only exceptions with the given name."), | |
8932 | catch_catch_command, | |
8933 | CATCH_PERMANENT, | |
8934 | CATCH_TEMPORARY); | |
8935 | add_catch_command ("throw", _("\ | |
8936 | Catch an exception, when thrown.\n\ | |
8937 | With an argument, catch only exceptions with the given name."), | |
8938 | catch_throw_command, | |
8939 | CATCH_PERMANENT, | |
8940 | CATCH_TEMPORARY); | |
8941 | add_catch_command ("fork", _("Catch calls to fork."), | |
8942 | catch_fork_command_1, | |
8943 | (void *) (uintptr_t) catch_fork_permanent, | |
8944 | (void *) (uintptr_t) catch_fork_temporary); | |
8945 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
8946 | catch_fork_command_1, | |
8947 | (void *) (uintptr_t) catch_vfork_permanent, | |
8948 | (void *) (uintptr_t) catch_vfork_temporary); | |
8949 | add_catch_command ("exec", _("Catch calls to exec."), | |
8950 | catch_exec_command_1, | |
8951 | CATCH_PERMANENT, | |
8952 | CATCH_TEMPORARY); | |
44feb3ce TT |
8953 | add_catch_command ("exception", _("\ |
8954 | Catch Ada exceptions, when raised.\n\ | |
8955 | With an argument, catch only exceptions with the given name."), | |
8956 | catch_ada_exception_command, | |
8957 | CATCH_PERMANENT, | |
8958 | CATCH_TEMPORARY); | |
8959 | add_catch_command ("assert", _("\ | |
8960 | Catch failed Ada assertions, when raised.\n\ | |
8961 | With an argument, catch only exceptions with the given name."), | |
8962 | catch_assert_command, | |
8963 | CATCH_PERMANENT, | |
8964 | CATCH_TEMPORARY); | |
c5aa993b | 8965 | |
1bedd215 AC |
8966 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
8967 | Set a watchpoint for an expression.\n\ | |
c906108c | 8968 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8969 | an expression changes.")); |
65d12d83 | 8970 | set_cmd_completer (c, expression_completer); |
c906108c | 8971 | |
1bedd215 AC |
8972 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
8973 | Set a read watchpoint for an expression.\n\ | |
c906108c | 8974 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8975 | an expression is read.")); |
65d12d83 | 8976 | set_cmd_completer (c, expression_completer); |
c906108c | 8977 | |
1bedd215 AC |
8978 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
8979 | Set a watchpoint for an expression.\n\ | |
c906108c | 8980 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8981 | an expression is either read or written.")); |
65d12d83 | 8982 | set_cmd_completer (c, expression_completer); |
c906108c SS |
8983 | |
8984 | add_info ("watchpoints", breakpoints_info, | |
1bedd215 | 8985 | _("Synonym for ``info breakpoints''.")); |
c906108c SS |
8986 | |
8987 | ||
920d2a44 AC |
8988 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
8989 | respond to changes - contrary to the description. */ | |
85c07804 AC |
8990 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
8991 | &can_use_hw_watchpoints, _("\ | |
8992 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
8993 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
8994 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
8995 | such is available. (However, any hardware watchpoints that were\n\ | |
8996 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
8997 | hardware.)"), |
8998 | NULL, | |
920d2a44 | 8999 | show_can_use_hw_watchpoints, |
85c07804 | 9000 | &setlist, &showlist); |
c906108c SS |
9001 | |
9002 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 9003 | |
1042e4c0 SS |
9004 | /* Tracepoint manipulation commands. */ |
9005 | ||
9006 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
9007 | Set a tracepoint at specified line or function.\n\ | |
9008 | \n" | |
9009 | BREAK_ARGS_HELP ("trace") "\n\ | |
9010 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
9011 | set_cmd_completer (c, location_completer); | |
9012 | ||
9013 | add_com_alias ("tp", "trace", class_alias, 0); | |
9014 | add_com_alias ("tr", "trace", class_alias, 1); | |
9015 | add_com_alias ("tra", "trace", class_alias, 1); | |
9016 | add_com_alias ("trac", "trace", class_alias, 1); | |
9017 | ||
9018 | add_info ("tracepoints", tracepoints_info, _("\ | |
9019 | Status of tracepoints, or tracepoint number NUMBER.\n\ | |
9020 | Convenience variable \"$tpnum\" contains the number of the\n\ | |
9021 | last tracepoint set.")); | |
9022 | ||
9023 | add_info_alias ("tp", "tracepoints", 1); | |
9024 | ||
9025 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
9026 | Delete specified tracepoints.\n\ | |
9027 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
9028 | No argument means delete all tracepoints."), | |
9029 | &deletelist); | |
9030 | ||
9031 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
9032 | Disable specified tracepoints.\n\ | |
9033 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
9034 | No argument means disable all tracepoints."), | |
9035 | &disablelist); | |
9036 | deprecate_cmd (c, "disable"); | |
9037 | ||
9038 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
9039 | Enable specified tracepoints.\n\ | |
9040 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
9041 | No argument means enable all tracepoints."), | |
9042 | &enablelist); | |
9043 | deprecate_cmd (c, "enable"); | |
9044 | ||
9045 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
9046 | Set the passcount for a tracepoint.\n\ | |
9047 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
9048 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
9049 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
9050 | ||
9051 | c = add_com ("save-tracepoints", class_trace, tracepoint_save_command, _("\ | |
9052 | Save current tracepoint definitions as a script.\n\ | |
9053 | Use the 'source' command in another debug session to restore them.")); | |
9054 | set_cmd_completer (c, filename_completer); | |
9055 | ||
1bedd215 | 9056 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
9057 | Breakpoint specific settings\n\ |
9058 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 9059 | pending breakpoint behavior"), |
fa8d40ab JJ |
9060 | &breakpoint_set_cmdlist, "set breakpoint ", |
9061 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 9062 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
9063 | Breakpoint specific settings\n\ |
9064 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 9065 | pending breakpoint behavior"), |
fa8d40ab JJ |
9066 | &breakpoint_show_cmdlist, "show breakpoint ", |
9067 | 0/*allow-unknown*/, &showlist); | |
9068 | ||
7915a72c AC |
9069 | add_setshow_auto_boolean_cmd ("pending", no_class, |
9070 | &pending_break_support, _("\ | |
9071 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
9072 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
9073 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
9074 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
9075 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 9076 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 9077 | NULL, |
920d2a44 | 9078 | show_pending_break_support, |
6e1d7d6c AC |
9079 | &breakpoint_set_cmdlist, |
9080 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
9081 | |
9082 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
9083 | |
9084 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
9085 | &automatic_hardware_breakpoints, _("\ | |
9086 | Set automatic usage of hardware breakpoints."), _("\ | |
9087 | Show automatic usage of hardware breakpoints."), _("\ | |
9088 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
9089 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
9090 | a warning will be emitted for such breakpoints."), | |
9091 | NULL, | |
9092 | show_automatic_hardware_breakpoints, | |
9093 | &breakpoint_set_cmdlist, | |
9094 | &breakpoint_show_cmdlist); | |
74960c60 | 9095 | |
33e5cbd6 PA |
9096 | add_setshow_enum_cmd ("always-inserted", class_support, |
9097 | always_inserted_enums, &always_inserted_mode, _("\ | |
74960c60 VP |
9098 | Set mode for inserting breakpoints."), _("\ |
9099 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
9100 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
9101 | resumed, and removed when execution stops. When this mode is on,\n\ | |
9102 | breakpoints are inserted immediately and removed only when the user\n\ | |
9103 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
9104 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
9105 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
9106 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
9107 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
74960c60 VP |
9108 | NULL, |
9109 | &show_always_inserted_mode, | |
9110 | &breakpoint_set_cmdlist, | |
9111 | &breakpoint_show_cmdlist); | |
765dc015 VP |
9112 | |
9113 | automatic_hardware_breakpoints = 1; | |
f3b1572e PA |
9114 | |
9115 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
c906108c | 9116 | } |