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 | |
69de3c6a | 1479 | create_overlay_event_breakpoint (char *func_name) |
e62c965a | 1480 | { |
69de3c6a | 1481 | struct objfile *objfile; |
e62c965a | 1482 | |
69de3c6a PP |
1483 | ALL_OBJFILES (objfile) |
1484 | { | |
1485 | struct breakpoint *b; | |
1486 | struct minimal_symbol *m; | |
1487 | ||
1488 | m = lookup_minimal_symbol_text (func_name, objfile); | |
1489 | if (m == NULL) | |
1490 | continue; | |
e62c965a | 1491 | |
69de3c6a PP |
1492 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), |
1493 | bp_overlay_event); | |
1494 | b->addr_string = xstrdup (func_name); | |
e62c965a | 1495 | |
69de3c6a PP |
1496 | if (overlay_debugging == ovly_auto) |
1497 | { | |
1498 | b->enable_state = bp_enabled; | |
1499 | overlay_events_enabled = 1; | |
1500 | } | |
1501 | else | |
1502 | { | |
1503 | b->enable_state = bp_disabled; | |
1504 | overlay_events_enabled = 0; | |
1505 | } | |
e62c965a PP |
1506 | } |
1507 | update_global_location_list (1); | |
1508 | } | |
1509 | ||
c906108c | 1510 | void |
fba45db2 | 1511 | update_breakpoints_after_exec (void) |
c906108c | 1512 | { |
c5aa993b JM |
1513 | struct breakpoint *b; |
1514 | struct breakpoint *temp; | |
25b22b0a | 1515 | struct bp_location *bploc; |
c906108c | 1516 | |
25b22b0a PA |
1517 | /* We're about to delete breakpoints from GDB's lists. If the |
1518 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
1519 | writing the breakpoints' "shadow contents" back into memory. The | |
1520 | "shadow contents" are NOT valid after an exec, so GDB should not | |
1521 | do that. Instead, the target is responsible from marking | |
1522 | breakpoints out as soon as it detects an exec. We don't do that | |
1523 | here instead, because there may be other attempts to delete | |
1524 | breakpoints after detecting an exec and before reaching here. */ | |
1525 | ALL_BP_LOCATIONS (bploc) | |
1526 | gdb_assert (!bploc->inserted); | |
c906108c SS |
1527 | |
1528 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1529 | { |
1530 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
1531 | if (b->type == bp_shlib_event) | |
1532 | { | |
1533 | delete_breakpoint (b); | |
1534 | continue; | |
1535 | } | |
c906108c | 1536 | |
1900040c MS |
1537 | /* Thread event breakpoints must be set anew after an exec(), |
1538 | as must overlay event breakpoints. */ | |
1539 | if (b->type == bp_thread_event || b->type == bp_overlay_event) | |
c4093a6a JM |
1540 | { |
1541 | delete_breakpoint (b); | |
1542 | continue; | |
1543 | } | |
1544 | ||
c5aa993b JM |
1545 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1546 | if (b->type == bp_step_resume) | |
1547 | { | |
1548 | delete_breakpoint (b); | |
1549 | continue; | |
1550 | } | |
1551 | ||
611c83ae PA |
1552 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
1553 | after an exec. */ | |
1554 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume) | |
1555 | { | |
1556 | delete_breakpoint (b); | |
1557 | continue; | |
1558 | } | |
1559 | ||
ce78b96d JB |
1560 | if (b->type == bp_catchpoint) |
1561 | { | |
1562 | /* For now, none of the bp_catchpoint breakpoints need to | |
1563 | do anything at this point. In the future, if some of | |
1564 | the catchpoints need to something, we will need to add | |
1565 | a new method, and call this method from here. */ | |
1566 | continue; | |
1567 | } | |
1568 | ||
c5aa993b JM |
1569 | /* bp_finish is a special case. The only way we ought to be able |
1570 | to see one of these when an exec() has happened, is if the user | |
1571 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1572 | carries them to the call-site of the current callee, by setting | |
1573 | a temporary bp there and resuming. But in this case, the finish | |
1574 | will carry them entirely through the vfork & exec. | |
1575 | ||
1576 | We don't want to allow a bp_finish to remain inserted now. But | |
1577 | we can't safely delete it, 'cause finish_command has a handle to | |
1578 | the bp on a bpstat, and will later want to delete it. There's a | |
1579 | chance (and I've seen it happen) that if we delete the bp_finish | |
1580 | here, that its storage will get reused by the time finish_command | |
1581 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1582 | We really must allow finish_command to delete a bp_finish. | |
1583 | ||
53a5351d JM |
1584 | In the absense of a general solution for the "how do we know |
1585 | it's safe to delete something others may have handles to?" | |
1586 | problem, what we'll do here is just uninsert the bp_finish, and | |
1587 | let finish_command delete it. | |
1588 | ||
1589 | (We know the bp_finish is "doomed" in the sense that it's | |
1590 | momentary, and will be deleted as soon as finish_command sees | |
1591 | the inferior stopped. So it doesn't matter that the bp's | |
1592 | address is probably bogus in the new a.out, unlike e.g., the | |
1593 | solib breakpoints.) */ | |
c5aa993b | 1594 | |
c5aa993b JM |
1595 | if (b->type == bp_finish) |
1596 | { | |
1597 | continue; | |
1598 | } | |
1599 | ||
1600 | /* Without a symbolic address, we have little hope of the | |
1601 | pre-exec() address meaning the same thing in the post-exec() | |
1602 | a.out. */ | |
1603 | if (b->addr_string == NULL) | |
1604 | { | |
1605 | delete_breakpoint (b); | |
1606 | continue; | |
1607 | } | |
c5aa993b | 1608 | } |
1900040c | 1609 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
69de3c6a | 1610 | create_overlay_event_breakpoint ("_ovly_debug_event"); |
c906108c SS |
1611 | } |
1612 | ||
1613 | int | |
fba45db2 | 1614 | detach_breakpoints (int pid) |
c906108c | 1615 | { |
0bde7532 | 1616 | struct bp_location *b; |
c906108c | 1617 | int val; |
ce696e05 | 1618 | struct cleanup *old_chain = save_inferior_ptid (); |
c5aa993b | 1619 | |
39f77062 | 1620 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 1621 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 1622 | |
ce696e05 KB |
1623 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1624 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1625 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1626 | { |
0bde7532 | 1627 | if (b->inserted) |
c5aa993b JM |
1628 | { |
1629 | val = remove_breakpoint (b, mark_inserted); | |
1630 | if (val != 0) | |
1631 | { | |
ce696e05 | 1632 | do_cleanups (old_chain); |
c5aa993b JM |
1633 | return val; |
1634 | } | |
1635 | } | |
1636 | } | |
ce696e05 | 1637 | do_cleanups (old_chain); |
c906108c SS |
1638 | return 0; |
1639 | } | |
1640 | ||
1641 | static int | |
0bde7532 | 1642 | remove_breakpoint (struct bp_location *b, insertion_state_t is) |
c906108c SS |
1643 | { |
1644 | int val; | |
c5aa993b | 1645 | |
0bde7532 | 1646 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
1647 | /* Permanent breakpoints cannot be inserted or removed. */ |
1648 | return 0; | |
1649 | ||
74960c60 VP |
1650 | /* The type of none suggests that owner is actually deleted. |
1651 | This should not ever happen. */ | |
1652 | gdb_assert (b->owner->type != bp_none); | |
0bde7532 DJ |
1653 | |
1654 | if (b->loc_type == bp_loc_software_breakpoint | |
1655 | || b->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 1656 | { |
c02f5703 MS |
1657 | /* "Normal" instruction breakpoint: either the standard |
1658 | trap-instruction bp (bp_breakpoint), or a | |
1659 | bp_hardware_breakpoint. */ | |
1660 | ||
1661 | /* First check to see if we have to handle an overlay. */ | |
1662 | if (overlay_debugging == ovly_off | |
0bde7532 DJ |
1663 | || b->section == NULL |
1664 | || !(section_is_overlay (b->section))) | |
c02f5703 MS |
1665 | { |
1666 | /* No overlay handling: just remove the breakpoint. */ | |
1667 | ||
0bde7532 | 1668 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1669 | val = target_remove_hw_breakpoint (&b->target_info); |
c02f5703 | 1670 | else |
8181d85f | 1671 | val = target_remove_breakpoint (&b->target_info); |
c02f5703 | 1672 | } |
c906108c SS |
1673 | else |
1674 | { | |
c02f5703 MS |
1675 | /* This breakpoint is in an overlay section. |
1676 | Did we set a breakpoint at the LMA? */ | |
1677 | if (!overlay_events_enabled) | |
1678 | { | |
1679 | /* Yes -- overlay event support is not active, so we | |
1680 | should have set a breakpoint at the LMA. Remove it. | |
1681 | */ | |
c02f5703 MS |
1682 | /* Ignore any failures: if the LMA is in ROM, we will |
1683 | have already warned when we failed to insert it. */ | |
0bde7532 | 1684 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1685 | target_remove_hw_breakpoint (&b->overlay_target_info); |
c02f5703 | 1686 | else |
8181d85f | 1687 | target_remove_breakpoint (&b->overlay_target_info); |
c02f5703 MS |
1688 | } |
1689 | /* Did we set a breakpoint at the VMA? | |
1690 | If so, we will have marked the breakpoint 'inserted'. */ | |
0bde7532 | 1691 | if (b->inserted) |
c906108c | 1692 | { |
c02f5703 MS |
1693 | /* Yes -- remove it. Previously we did not bother to |
1694 | remove the breakpoint if the section had been | |
1695 | unmapped, but let's not rely on that being safe. We | |
1696 | don't know what the overlay manager might do. */ | |
0bde7532 | 1697 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1698 | val = target_remove_hw_breakpoint (&b->target_info); |
aa67235e UW |
1699 | |
1700 | /* However, we should remove *software* breakpoints only | |
1701 | if the section is still mapped, or else we overwrite | |
1702 | wrong code with the saved shadow contents. */ | |
1703 | else if (section_is_mapped (b->section)) | |
8181d85f | 1704 | val = target_remove_breakpoint (&b->target_info); |
aa67235e UW |
1705 | else |
1706 | val = 0; | |
c906108c | 1707 | } |
c02f5703 MS |
1708 | else |
1709 | { | |
1710 | /* No -- not inserted, so no need to remove. No error. */ | |
1711 | val = 0; | |
1712 | } | |
c906108c | 1713 | } |
879d1e6b UW |
1714 | |
1715 | /* In some cases, we might not be able to remove a breakpoint | |
1716 | in a shared library that has already been removed, but we | |
1717 | have not yet processed the shlib unload event. */ | |
f5c9a895 | 1718 | if (val && solib_name_from_address (b->address)) |
879d1e6b UW |
1719 | val = 0; |
1720 | ||
c906108c SS |
1721 | if (val) |
1722 | return val; | |
0bde7532 | 1723 | b->inserted = (is == mark_inserted); |
c906108c | 1724 | } |
a5606eee | 1725 | else if (b->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 1726 | { |
278cd55f AC |
1727 | struct value *v; |
1728 | struct value *n; | |
c5aa993b | 1729 | |
0bde7532 | 1730 | b->inserted = (is == mark_inserted); |
a5606eee VP |
1731 | val = target_remove_watchpoint (b->address, b->length, |
1732 | b->watchpoint_type); | |
2e70b7b9 | 1733 | |
c906108c | 1734 | /* Failure to remove any of the hardware watchpoints comes here. */ |
0bde7532 | 1735 | if ((is == mark_uninserted) && (b->inserted)) |
8a3fe4f8 | 1736 | warning (_("Could not remove hardware watchpoint %d."), |
0bde7532 | 1737 | b->owner->number); |
c906108c | 1738 | } |
ce78b96d JB |
1739 | else if (b->owner->type == bp_catchpoint |
1740 | && breakpoint_enabled (b->owner) | |
1741 | && !b->duplicate) | |
1742 | { | |
1743 | gdb_assert (b->owner->ops != NULL && b->owner->ops->remove != NULL); | |
1744 | ||
1745 | val = b->owner->ops->remove (b->owner); | |
1746 | if (val) | |
1747 | return val; | |
1748 | b->inserted = (is == mark_inserted); | |
1749 | } | |
c906108c SS |
1750 | |
1751 | return 0; | |
1752 | } | |
1753 | ||
1754 | /* Clear the "inserted" flag in all breakpoints. */ | |
1755 | ||
25b22b0a | 1756 | void |
fba45db2 | 1757 | mark_breakpoints_out (void) |
c906108c | 1758 | { |
075f6582 | 1759 | struct bp_location *bpt; |
c906108c | 1760 | |
075f6582 DJ |
1761 | ALL_BP_LOCATIONS (bpt) |
1762 | bpt->inserted = 0; | |
c906108c SS |
1763 | } |
1764 | ||
53a5351d JM |
1765 | /* Clear the "inserted" flag in all breakpoints and delete any |
1766 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1767 | |
1768 | Plus other such housekeeping that has to be done for breakpoints | |
1769 | between runs. | |
1770 | ||
53a5351d JM |
1771 | Note: this function gets called at the end of a run (by |
1772 | generic_mourn_inferior) and when a run begins (by | |
1773 | init_wait_for_inferior). */ | |
c906108c SS |
1774 | |
1775 | ||
1776 | ||
1777 | void | |
fba45db2 | 1778 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 1779 | { |
52f0bd74 | 1780 | struct breakpoint *b, *temp; |
075f6582 | 1781 | struct bp_location *bpt; |
1c5cfe86 | 1782 | int ix; |
c906108c | 1783 | |
50c71eaf PA |
1784 | /* If breakpoint locations are shared across processes, then there's |
1785 | nothing to do. */ | |
2567c7d9 | 1786 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
1787 | return; |
1788 | ||
075f6582 | 1789 | ALL_BP_LOCATIONS (bpt) |
514f746b AR |
1790 | if (bpt->owner->enable_state != bp_permanent) |
1791 | bpt->inserted = 0; | |
075f6582 | 1792 | |
c906108c | 1793 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 1794 | { |
c5aa993b JM |
1795 | switch (b->type) |
1796 | { | |
1797 | case bp_call_dummy: | |
1798 | case bp_watchpoint_scope: | |
c906108c | 1799 | |
c5aa993b JM |
1800 | /* If the call dummy breakpoint is at the entry point it will |
1801 | cause problems when the inferior is rerun, so we better | |
1802 | get rid of it. | |
c906108c | 1803 | |
c5aa993b JM |
1804 | Also get rid of scope breakpoints. */ |
1805 | delete_breakpoint (b); | |
1806 | break; | |
c906108c | 1807 | |
c5aa993b JM |
1808 | case bp_watchpoint: |
1809 | case bp_hardware_watchpoint: | |
1810 | case bp_read_watchpoint: | |
1811 | case bp_access_watchpoint: | |
c906108c | 1812 | |
c5aa993b JM |
1813 | /* Likewise for watchpoints on local expressions. */ |
1814 | if (b->exp_valid_block != NULL) | |
1815 | delete_breakpoint (b); | |
967af18d | 1816 | else if (context == inf_starting) |
c860120c PM |
1817 | { |
1818 | /* Reset val field to force reread of starting value | |
1819 | in insert_breakpoints. */ | |
1820 | if (b->val) | |
1821 | value_free (b->val); | |
1822 | b->val = NULL; | |
fa4727a6 | 1823 | b->val_valid = 0; |
c860120c | 1824 | } |
c5aa993b JM |
1825 | break; |
1826 | default: | |
c5aa993b JM |
1827 | break; |
1828 | } | |
1829 | } | |
1c5cfe86 PA |
1830 | |
1831 | /* Get rid of the moribund locations. */ | |
1832 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bpt); ++ix) | |
1833 | free_bp_location (bpt); | |
1834 | VEC_free (bp_location_p, moribund_locations); | |
c906108c SS |
1835 | } |
1836 | ||
c2c6d25f JM |
1837 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1838 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1839 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1840 | permanent breakpoint. | |
1841 | - When continuing from a location with an ordinary breakpoint, we | |
1842 | actually single step once before calling insert_breakpoints. | |
1843 | - When continuing from a localion with a permanent breakpoint, we | |
1844 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1845 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1846 | |
c2c6d25f | 1847 | enum breakpoint_here |
fba45db2 | 1848 | breakpoint_here_p (CORE_ADDR pc) |
c906108c | 1849 | { |
89f9893c | 1850 | const struct bp_location *bpt; |
c2c6d25f | 1851 | int any_breakpoint_here = 0; |
c906108c | 1852 | |
075f6582 DJ |
1853 | ALL_BP_LOCATIONS (bpt) |
1854 | { | |
1855 | if (bpt->loc_type != bp_loc_software_breakpoint | |
1856 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1857 | continue; | |
1858 | ||
468d015d | 1859 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1860 | || bpt->owner->enable_state == bp_permanent) |
1861 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1862 | { | |
1863 | if (overlay_debugging | |
1864 | && section_is_overlay (bpt->section) | |
1865 | && !section_is_mapped (bpt->section)) | |
1866 | continue; /* unmapped overlay -- can't be a match */ | |
1867 | else if (bpt->owner->enable_state == bp_permanent) | |
1868 | return permanent_breakpoint_here; | |
1869 | else | |
1870 | any_breakpoint_here = 1; | |
1871 | } | |
1872 | } | |
c906108c | 1873 | |
c2c6d25f | 1874 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1875 | } |
1876 | ||
1c5cfe86 PA |
1877 | /* Return true if there's a moribund breakpoint at PC. */ |
1878 | ||
1879 | int | |
1880 | moribund_breakpoint_here_p (CORE_ADDR pc) | |
1881 | { | |
1882 | struct bp_location *loc; | |
1883 | int ix; | |
1884 | ||
1885 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
1886 | if (loc->address == pc) | |
1887 | return 1; | |
1888 | ||
1889 | return 0; | |
1890 | } | |
c2c6d25f | 1891 | |
c36b740a VP |
1892 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
1893 | inserted using regular breakpoint_chain/bp_location_chain mechanism. | |
1894 | This does not check for single-step breakpoints, which are | |
1895 | inserted and removed using direct target manipulation. */ | |
c906108c SS |
1896 | |
1897 | int | |
c36b740a | 1898 | regular_breakpoint_inserted_here_p (CORE_ADDR pc) |
c906108c | 1899 | { |
89f9893c | 1900 | const struct bp_location *bpt; |
c906108c | 1901 | |
075f6582 | 1902 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1903 | { |
075f6582 DJ |
1904 | if (bpt->loc_type != bp_loc_software_breakpoint |
1905 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1906 | continue; | |
1907 | ||
1908 | if (bpt->inserted | |
1909 | && bpt->address == pc) /* bp is inserted and matches pc */ | |
1910 | { | |
1911 | if (overlay_debugging | |
1912 | && section_is_overlay (bpt->section) | |
1913 | && !section_is_mapped (bpt->section)) | |
1914 | continue; /* unmapped overlay -- can't be a match */ | |
1915 | else | |
1916 | return 1; | |
1917 | } | |
c5aa993b | 1918 | } |
c36b740a VP |
1919 | return 0; |
1920 | } | |
1921 | ||
1922 | /* Returns non-zero iff there's either regular breakpoint | |
1923 | or a single step breakpoint inserted at PC. */ | |
1924 | ||
1925 | int | |
1926 | breakpoint_inserted_here_p (CORE_ADDR pc) | |
1927 | { | |
1928 | if (regular_breakpoint_inserted_here_p (pc)) | |
1929 | return 1; | |
c906108c | 1930 | |
1aafd4da UW |
1931 | if (single_step_breakpoint_inserted_here_p (pc)) |
1932 | return 1; | |
1933 | ||
c906108c SS |
1934 | return 0; |
1935 | } | |
1936 | ||
4fa8626c DJ |
1937 | /* This function returns non-zero iff there is a software breakpoint |
1938 | inserted at PC. */ | |
1939 | ||
1940 | int | |
1941 | software_breakpoint_inserted_here_p (CORE_ADDR pc) | |
1942 | { | |
89f9893c | 1943 | const struct bp_location *bpt; |
4fa8626c DJ |
1944 | int any_breakpoint_here = 0; |
1945 | ||
1946 | ALL_BP_LOCATIONS (bpt) | |
1947 | { | |
1948 | if (bpt->loc_type != bp_loc_software_breakpoint) | |
1949 | continue; | |
1950 | ||
0d381245 | 1951 | if (bpt->inserted |
4fa8626c DJ |
1952 | && bpt->address == pc) /* bp is enabled and matches pc */ |
1953 | { | |
1954 | if (overlay_debugging | |
1955 | && section_is_overlay (bpt->section) | |
1956 | && !section_is_mapped (bpt->section)) | |
1957 | continue; /* unmapped overlay -- can't be a match */ | |
1958 | else | |
1959 | return 1; | |
1960 | } | |
1961 | } | |
1962 | ||
1aafd4da UW |
1963 | /* Also check for software single-step breakpoints. */ |
1964 | if (single_step_breakpoint_inserted_here_p (pc)) | |
1965 | return 1; | |
1966 | ||
4fa8626c DJ |
1967 | return 0; |
1968 | } | |
1969 | ||
075f6582 DJ |
1970 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
1971 | PC is valid for process/thread PTID. */ | |
c906108c SS |
1972 | |
1973 | int | |
39f77062 | 1974 | breakpoint_thread_match (CORE_ADDR pc, ptid_t ptid) |
c906108c | 1975 | { |
89f9893c | 1976 | const struct bp_location *bpt; |
4a306c9a | 1977 | /* The thread and task IDs associated to PTID, computed lazily. */ |
a6f1cd96 | 1978 | int thread = -1; |
4a306c9a | 1979 | int task = 0; |
a6f1cd96 | 1980 | |
075f6582 | 1981 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1982 | { |
075f6582 DJ |
1983 | if (bpt->loc_type != bp_loc_software_breakpoint |
1984 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1985 | continue; | |
1986 | ||
a6f1cd96 JB |
1987 | if (!breakpoint_enabled (bpt->owner) |
1988 | && bpt->owner->enable_state != bp_permanent) | |
1989 | continue; | |
1990 | ||
1991 | if (bpt->address != pc) | |
1992 | continue; | |
1993 | ||
1994 | if (bpt->owner->thread != -1) | |
075f6582 | 1995 | { |
a6f1cd96 JB |
1996 | /* This is a thread-specific breakpoint. Check that ptid |
1997 | matches that thread. If thread hasn't been computed yet, | |
1998 | it is now time to do so. */ | |
1999 | if (thread == -1) | |
2000 | thread = pid_to_thread_id (ptid); | |
2001 | if (bpt->owner->thread != thread) | |
2002 | continue; | |
075f6582 | 2003 | } |
a6f1cd96 | 2004 | |
4a306c9a JB |
2005 | if (bpt->owner->task != 0) |
2006 | { | |
2007 | /* This is a task-specific breakpoint. Check that ptid | |
2008 | matches that task. If task hasn't been computed yet, | |
2009 | it is now time to do so. */ | |
2010 | if (task == 0) | |
2011 | task = ada_get_task_number (ptid); | |
2012 | if (bpt->owner->task != task) | |
2013 | continue; | |
2014 | } | |
2015 | ||
a6f1cd96 JB |
2016 | if (overlay_debugging |
2017 | && section_is_overlay (bpt->section) | |
2018 | && !section_is_mapped (bpt->section)) | |
2019 | continue; /* unmapped overlay -- can't be a match */ | |
2020 | ||
2021 | return 1; | |
c5aa993b | 2022 | } |
c906108c SS |
2023 | |
2024 | return 0; | |
2025 | } | |
c906108c | 2026 | \f |
c5aa993b | 2027 | |
c906108c SS |
2028 | /* bpstat stuff. External routines' interfaces are documented |
2029 | in breakpoint.h. */ | |
2030 | ||
2031 | int | |
fba45db2 | 2032 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c | 2033 | { |
533be4dd | 2034 | return (ep->type == bp_catchpoint); |
c906108c SS |
2035 | } |
2036 | ||
198757a8 VP |
2037 | void |
2038 | bpstat_free (bpstat bs) | |
2039 | { | |
2040 | if (bs->old_val != NULL) | |
2041 | value_free (bs->old_val); | |
2042 | free_command_lines (&bs->commands); | |
2043 | xfree (bs); | |
2044 | } | |
2045 | ||
c906108c SS |
2046 | /* Clear a bpstat so that it says we are not at any breakpoint. |
2047 | Also free any storage that is part of a bpstat. */ | |
2048 | ||
2049 | void | |
fba45db2 | 2050 | bpstat_clear (bpstat *bsp) |
c906108c SS |
2051 | { |
2052 | bpstat p; | |
2053 | bpstat q; | |
2054 | ||
2055 | if (bsp == 0) | |
2056 | return; | |
2057 | p = *bsp; | |
2058 | while (p != NULL) | |
2059 | { | |
2060 | q = p->next; | |
198757a8 | 2061 | bpstat_free (p); |
c906108c SS |
2062 | p = q; |
2063 | } | |
2064 | *bsp = NULL; | |
2065 | } | |
2066 | ||
2067 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
2068 | is part of the bpstat is copied as well. */ | |
2069 | ||
2070 | bpstat | |
fba45db2 | 2071 | bpstat_copy (bpstat bs) |
c906108c SS |
2072 | { |
2073 | bpstat p = NULL; | |
2074 | bpstat tmp; | |
2075 | bpstat retval = NULL; | |
2076 | ||
2077 | if (bs == NULL) | |
2078 | return bs; | |
2079 | ||
2080 | for (; bs != NULL; bs = bs->next) | |
2081 | { | |
2082 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
2083 | memcpy (tmp, bs, sizeof (*tmp)); | |
31cc81e9 DJ |
2084 | if (bs->commands != NULL) |
2085 | tmp->commands = copy_command_lines (bs->commands); | |
2086 | if (bs->old_val != NULL) | |
3c3185ac JK |
2087 | { |
2088 | tmp->old_val = value_copy (bs->old_val); | |
2089 | release_value (tmp->old_val); | |
2090 | } | |
31cc81e9 | 2091 | |
c906108c SS |
2092 | if (p == NULL) |
2093 | /* This is the first thing in the chain. */ | |
2094 | retval = tmp; | |
2095 | else | |
2096 | p->next = tmp; | |
2097 | p = tmp; | |
2098 | } | |
2099 | p->next = NULL; | |
2100 | return retval; | |
2101 | } | |
2102 | ||
2103 | /* Find the bpstat associated with this breakpoint */ | |
2104 | ||
2105 | bpstat | |
fba45db2 | 2106 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 2107 | { |
c5aa993b JM |
2108 | if (bsp == NULL) |
2109 | return NULL; | |
c906108c | 2110 | |
c5aa993b JM |
2111 | for (; bsp != NULL; bsp = bsp->next) |
2112 | { | |
4f8d1dc6 | 2113 | if (bsp->breakpoint_at && bsp->breakpoint_at->owner == breakpoint) |
c5aa993b JM |
2114 | return bsp; |
2115 | } | |
c906108c SS |
2116 | return NULL; |
2117 | } | |
2118 | ||
2119 | /* Find a step_resume breakpoint associated with this bpstat. | |
2120 | (If there are multiple step_resume bp's on the list, this function | |
2121 | will arbitrarily pick one.) | |
2122 | ||
2123 | It is an error to use this function if BPSTAT doesn't contain a | |
2124 | step_resume breakpoint. | |
2125 | ||
2126 | See wait_for_inferior's use of this function. */ | |
2127 | struct breakpoint * | |
fba45db2 | 2128 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c | 2129 | { |
8601f500 MS |
2130 | int current_thread; |
2131 | ||
8a3fe4f8 | 2132 | gdb_assert (bsp != NULL); |
c906108c | 2133 | |
8601f500 MS |
2134 | current_thread = pid_to_thread_id (inferior_ptid); |
2135 | ||
c906108c SS |
2136 | for (; bsp != NULL; bsp = bsp->next) |
2137 | { | |
059fb39f PM |
2138 | if ((bsp->breakpoint_at != NULL) |
2139 | && (bsp->breakpoint_at->owner->type == bp_step_resume) | |
2140 | && (bsp->breakpoint_at->owner->thread == current_thread | |
2141 | || bsp->breakpoint_at->owner->thread == -1)) | |
4f8d1dc6 | 2142 | return bsp->breakpoint_at->owner; |
c906108c SS |
2143 | } |
2144 | ||
8a3fe4f8 | 2145 | internal_error (__FILE__, __LINE__, _("No step_resume breakpoint found.")); |
c906108c SS |
2146 | } |
2147 | ||
2148 | ||
8671a17b | 2149 | /* Put in *NUM the breakpoint number of the first breakpoint we are stopped |
c906108c SS |
2150 | at. *BSP upon return is a bpstat which points to the remaining |
2151 | breakpoints stopped at (but which is not guaranteed to be good for | |
2152 | anything but further calls to bpstat_num). | |
8671a17b PA |
2153 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
2154 | Return -1 if stopped at a breakpoint that has been deleted since | |
2155 | we set it. | |
2156 | Return 1 otherwise. */ | |
c906108c SS |
2157 | |
2158 | int | |
8671a17b | 2159 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
2160 | { |
2161 | struct breakpoint *b; | |
2162 | ||
2163 | if ((*bsp) == NULL) | |
2164 | return 0; /* No more breakpoint values */ | |
8671a17b | 2165 | |
4f8d1dc6 VP |
2166 | /* We assume we'll never have several bpstats that |
2167 | correspond to a single breakpoint -- otherwise, | |
2168 | this function might return the same number more | |
2169 | than once and this will look ugly. */ | |
2170 | b = (*bsp)->breakpoint_at ? (*bsp)->breakpoint_at->owner : NULL; | |
8671a17b PA |
2171 | *bsp = (*bsp)->next; |
2172 | if (b == NULL) | |
2173 | return -1; /* breakpoint that's been deleted since */ | |
2174 | ||
2175 | *num = b->number; /* We have its number */ | |
2176 | return 1; | |
c906108c SS |
2177 | } |
2178 | ||
2179 | /* Modify BS so that the actions will not be performed. */ | |
2180 | ||
2181 | void | |
fba45db2 | 2182 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
2183 | { |
2184 | for (; bs != NULL; bs = bs->next) | |
2185 | { | |
c2b8ed2c | 2186 | free_command_lines (&bs->commands); |
c906108c SS |
2187 | if (bs->old_val != NULL) |
2188 | { | |
2189 | value_free (bs->old_val); | |
2190 | bs->old_val = NULL; | |
2191 | } | |
2192 | } | |
2193 | } | |
2194 | ||
f3b1572e PA |
2195 | /* Called when a command is about to proceed the inferior. */ |
2196 | ||
2197 | static void | |
2198 | breakpoint_about_to_proceed (void) | |
2199 | { | |
2200 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
2201 | { | |
2202 | struct thread_info *tp = inferior_thread (); | |
2203 | ||
2204 | /* Allow inferior function calls in breakpoint commands to not | |
2205 | interrupt the command list. When the call finishes | |
2206 | successfully, the inferior will be standing at the same | |
2207 | breakpoint as if nothing happened. */ | |
2208 | if (tp->in_infcall) | |
2209 | return; | |
2210 | } | |
2211 | ||
2212 | breakpoint_proceeded = 1; | |
2213 | } | |
2214 | ||
c906108c | 2215 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ |
c906108c | 2216 | static void |
4efb68b1 | 2217 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
2218 | { |
2219 | executing_breakpoint_commands = 0; | |
2220 | } | |
2221 | ||
2222 | /* Execute all the commands associated with all the breakpoints at this | |
2223 | location. Any of these commands could cause the process to proceed | |
2224 | beyond this point, etc. We look out for such changes by checking | |
347bddb7 | 2225 | the global "breakpoint_proceeded" after each command. |
c906108c | 2226 | |
347bddb7 PA |
2227 | Returns true if a breakpoint command resumed the inferior. In that |
2228 | case, it is the caller's responsibility to recall it again with the | |
2229 | bpstat of the current thread. */ | |
2230 | ||
2231 | static int | |
2232 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
2233 | { |
2234 | bpstat bs; | |
2235 | struct cleanup *old_chain; | |
347bddb7 | 2236 | int again = 0; |
c906108c SS |
2237 | |
2238 | /* Avoid endless recursion if a `source' command is contained | |
2239 | in bs->commands. */ | |
2240 | if (executing_breakpoint_commands) | |
347bddb7 | 2241 | return 0; |
c906108c SS |
2242 | |
2243 | executing_breakpoint_commands = 1; | |
2244 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
2245 | ||
c906108c SS |
2246 | /* This pointer will iterate over the list of bpstat's. */ |
2247 | bs = *bsp; | |
2248 | ||
2249 | breakpoint_proceeded = 0; | |
2250 | for (; bs != NULL; bs = bs->next) | |
2251 | { | |
6c50ab1c JB |
2252 | struct command_line *cmd; |
2253 | struct cleanup *this_cmd_tree_chain; | |
2254 | ||
2255 | /* Take ownership of the BSP's command tree, if it has one. | |
2256 | ||
2257 | The command tree could legitimately contain commands like | |
2258 | 'step' and 'next', which call clear_proceed_status, which | |
2259 | frees stop_bpstat's command tree. To make sure this doesn't | |
2260 | free the tree we're executing out from under us, we need to | |
2261 | take ownership of the tree ourselves. Since a given bpstat's | |
2262 | commands are only executed once, we don't need to copy it; we | |
2263 | can clear the pointer in the bpstat, and make sure we free | |
2264 | the tree when we're done. */ | |
c906108c | 2265 | cmd = bs->commands; |
6c50ab1c JB |
2266 | bs->commands = 0; |
2267 | this_cmd_tree_chain = make_cleanup_free_command_lines (&cmd); | |
2268 | ||
c906108c SS |
2269 | while (cmd != NULL) |
2270 | { | |
2271 | execute_control_command (cmd); | |
2272 | ||
2273 | if (breakpoint_proceeded) | |
2274 | break; | |
2275 | else | |
2276 | cmd = cmd->next; | |
2277 | } | |
6c50ab1c JB |
2278 | |
2279 | /* We can free this command tree now. */ | |
2280 | do_cleanups (this_cmd_tree_chain); | |
2281 | ||
c906108c | 2282 | if (breakpoint_proceeded) |
32c1e744 VP |
2283 | { |
2284 | if (target_can_async_p ()) | |
347bddb7 PA |
2285 | /* If we are in async mode, then the target might be still |
2286 | running, not stopped at any breakpoint, so nothing for | |
2287 | us to do here -- just return to the event loop. */ | |
2288 | ; | |
32c1e744 VP |
2289 | else |
2290 | /* In sync mode, when execute_control_command returns | |
2291 | we're already standing on the next breakpoint. | |
347bddb7 PA |
2292 | Breakpoint commands for that stop were not run, since |
2293 | execute_command does not run breakpoint commands -- | |
2294 | only command_line_handler does, but that one is not | |
2295 | involved in execution of breakpoint commands. So, we | |
2296 | can now execute breakpoint commands. It should be | |
2297 | noted that making execute_command do bpstat actions is | |
2298 | not an option -- in this case we'll have recursive | |
2299 | invocation of bpstat for each breakpoint with a | |
2300 | command, and can easily blow up GDB stack. Instead, we | |
2301 | return true, which will trigger the caller to recall us | |
2302 | with the new stop_bpstat. */ | |
2303 | again = 1; | |
2304 | break; | |
32c1e744 | 2305 | } |
c906108c | 2306 | } |
c2b8ed2c | 2307 | do_cleanups (old_chain); |
347bddb7 PA |
2308 | return again; |
2309 | } | |
2310 | ||
2311 | void | |
2312 | bpstat_do_actions (void) | |
2313 | { | |
2314 | /* Do any commands attached to breakpoint we are stopped at. */ | |
2315 | while (!ptid_equal (inferior_ptid, null_ptid) | |
2316 | && target_has_execution | |
2317 | && !is_exited (inferior_ptid) | |
2318 | && !is_executing (inferior_ptid)) | |
2319 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
2320 | and only return when it is stopped at the next breakpoint, we | |
2321 | keep doing breakpoint actions until it returns false to | |
2322 | indicate the inferior was not resumed. */ | |
2323 | if (!bpstat_do_actions_1 (&inferior_thread ()->stop_bpstat)) | |
2324 | break; | |
c906108c SS |
2325 | } |
2326 | ||
fa4727a6 DJ |
2327 | /* Print out the (old or new) value associated with a watchpoint. */ |
2328 | ||
2329 | static void | |
2330 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
2331 | { | |
2332 | if (val == NULL) | |
2333 | fprintf_unfiltered (stream, _("<unreadable>")); | |
2334 | else | |
79a45b7d TT |
2335 | { |
2336 | struct value_print_options opts; | |
2337 | get_user_print_options (&opts); | |
2338 | value_print (val, stream, &opts); | |
2339 | } | |
fa4727a6 DJ |
2340 | } |
2341 | ||
e514a9d6 | 2342 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 2343 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
2344 | by having it set different print_it values. |
2345 | ||
2346 | Current scheme: When we stop, bpstat_print() is called. It loops | |
2347 | through the bpstat list of things causing this stop, calling the | |
2348 | print_bp_stop_message function on each one. The behavior of the | |
2349 | print_bp_stop_message function depends on the print_it field of | |
2350 | bpstat. If such field so indicates, call this function here. | |
2351 | ||
2352 | Return values from this routine (ultimately used by bpstat_print() | |
2353 | and normal_stop() to decide what to do): | |
2354 | PRINT_NOTHING: Means we already printed all we needed to print, | |
2355 | don't print anything else. | |
2356 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
2357 | that something to be followed by a location. | |
2358 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
2359 | that something to be followed by a location. | |
2360 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
2361 | analysis. */ | |
c906108c | 2362 | |
917317f4 | 2363 | static enum print_stop_action |
fba45db2 | 2364 | print_it_typical (bpstat bs) |
c906108c | 2365 | { |
f7545552 | 2366 | struct cleanup *old_chain; |
4f8d1dc6 | 2367 | struct breakpoint *b; |
89f9893c | 2368 | const struct bp_location *bl; |
8b93c638 | 2369 | struct ui_stream *stb; |
f7545552 TT |
2370 | int bp_temp = 0; |
2371 | enum print_stop_action result; | |
2372 | ||
c906108c SS |
2373 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
2374 | which has since been deleted. */ | |
e514a9d6 | 2375 | if (bs->breakpoint_at == NULL) |
917317f4 | 2376 | return PRINT_UNKNOWN; |
0d381245 VP |
2377 | bl = bs->breakpoint_at; |
2378 | b = bl->owner; | |
c906108c | 2379 | |
f7545552 TT |
2380 | stb = ui_out_stream_new (uiout); |
2381 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
2382 | ||
4f8d1dc6 | 2383 | switch (b->type) |
c906108c | 2384 | { |
e514a9d6 JM |
2385 | case bp_breakpoint: |
2386 | case bp_hardware_breakpoint: | |
2cec12e5 | 2387 | bp_temp = bs->breakpoint_at->owner->disposition == disp_del; |
0d381245 VP |
2388 | if (bl->address != bl->requested_address) |
2389 | breakpoint_adjustment_warning (bl->requested_address, | |
2390 | bl->address, | |
4f8d1dc6 VP |
2391 | b->number, 1); |
2392 | annotate_breakpoint (b->number); | |
2cec12e5 AR |
2393 | if (bp_temp) |
2394 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
2395 | else | |
2396 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 2397 | if (ui_out_is_mi_like_p (uiout)) |
2cec12e5 AR |
2398 | { |
2399 | ui_out_field_string (uiout, "reason", | |
2400 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
2401 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
2402 | } | |
4f8d1dc6 | 2403 | ui_out_field_int (uiout, "bkptno", b->number); |
8b93c638 | 2404 | ui_out_text (uiout, ", "); |
f7545552 | 2405 | result = PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2406 | break; |
2407 | ||
2408 | case bp_shlib_event: | |
917317f4 JM |
2409 | /* Did we stop because the user set the stop_on_solib_events |
2410 | variable? (If so, we report this as a generic, "Stopped due | |
2411 | to shlib event" message.) */ | |
a3f17187 | 2412 | printf_filtered (_("Stopped due to shared library event\n")); |
f7545552 | 2413 | result = PRINT_NOTHING; |
e514a9d6 JM |
2414 | break; |
2415 | ||
c4093a6a JM |
2416 | case bp_thread_event: |
2417 | /* Not sure how we will get here. | |
2418 | GDB should not stop for these breakpoints. */ | |
a3f17187 | 2419 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 2420 | result = PRINT_NOTHING; |
c4093a6a JM |
2421 | break; |
2422 | ||
1900040c MS |
2423 | case bp_overlay_event: |
2424 | /* By analogy with the thread event, GDB should not stop for these. */ | |
a3f17187 | 2425 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 2426 | result = PRINT_NOTHING; |
1900040c MS |
2427 | break; |
2428 | ||
e514a9d6 JM |
2429 | case bp_watchpoint: |
2430 | case bp_hardware_watchpoint: | |
fa4727a6 DJ |
2431 | annotate_watchpoint (b->number); |
2432 | if (ui_out_is_mi_like_p (uiout)) | |
2433 | ui_out_field_string | |
2434 | (uiout, "reason", | |
2435 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
2436 | mention (b); | |
f7545552 | 2437 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
fa4727a6 DJ |
2438 | ui_out_text (uiout, "\nOld value = "); |
2439 | watchpoint_value_print (bs->old_val, stb->stream); | |
2440 | ui_out_field_stream (uiout, "old", stb); | |
2441 | ui_out_text (uiout, "\nNew value = "); | |
2442 | watchpoint_value_print (b->val, stb->stream); | |
2443 | ui_out_field_stream (uiout, "new", stb); | |
fa4727a6 | 2444 | ui_out_text (uiout, "\n"); |
e514a9d6 | 2445 | /* More than one watchpoint may have been triggered. */ |
f7545552 | 2446 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
2447 | break; |
2448 | ||
2449 | case bp_read_watchpoint: | |
9dc5e2a9 | 2450 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2451 | ui_out_field_string |
2452 | (uiout, "reason", | |
2453 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 2454 | mention (b); |
f7545552 | 2455 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 2456 | ui_out_text (uiout, "\nValue = "); |
fa4727a6 | 2457 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 2458 | ui_out_field_stream (uiout, "value", stb); |
8b93c638 | 2459 | ui_out_text (uiout, "\n"); |
f7545552 | 2460 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
2461 | break; |
2462 | ||
2463 | case bp_access_watchpoint: | |
fa4727a6 | 2464 | if (bs->old_val != NULL) |
8b93c638 | 2465 | { |
4f8d1dc6 | 2466 | annotate_watchpoint (b->number); |
9dc5e2a9 | 2467 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2468 | ui_out_field_string |
2469 | (uiout, "reason", | |
2470 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 2471 | mention (b); |
f7545552 | 2472 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 2473 | ui_out_text (uiout, "\nOld value = "); |
fa4727a6 | 2474 | watchpoint_value_print (bs->old_val, stb->stream); |
8b93c638 | 2475 | ui_out_field_stream (uiout, "old", stb); |
8b93c638 JM |
2476 | ui_out_text (uiout, "\nNew value = "); |
2477 | } | |
2478 | else | |
2479 | { | |
4f8d1dc6 | 2480 | mention (b); |
9dc5e2a9 | 2481 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2482 | ui_out_field_string |
2483 | (uiout, "reason", | |
2484 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
f7545552 | 2485 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2486 | ui_out_text (uiout, "\nValue = "); |
2487 | } | |
fa4727a6 | 2488 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 2489 | ui_out_field_stream (uiout, "new", stb); |
8b93c638 | 2490 | ui_out_text (uiout, "\n"); |
f7545552 | 2491 | result = PRINT_UNKNOWN; |
e514a9d6 | 2492 | break; |
4ce44c66 | 2493 | |
e514a9d6 JM |
2494 | /* Fall through, we don't deal with these types of breakpoints |
2495 | here. */ | |
2496 | ||
11cf8741 | 2497 | case bp_finish: |
9dc5e2a9 | 2498 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2499 | ui_out_field_string |
2500 | (uiout, "reason", | |
2501 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
f7545552 | 2502 | result = PRINT_UNKNOWN; |
8b93c638 JM |
2503 | break; |
2504 | ||
e514a9d6 | 2505 | case bp_until: |
9dc5e2a9 | 2506 | if (ui_out_is_mi_like_p (uiout)) |
1fbc2a49 NR |
2507 | ui_out_field_string |
2508 | (uiout, "reason", | |
2509 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
f7545552 | 2510 | result = PRINT_UNKNOWN; |
8b93c638 JM |
2511 | break; |
2512 | ||
c2d11a7d | 2513 | case bp_none: |
e514a9d6 JM |
2514 | case bp_longjmp: |
2515 | case bp_longjmp_resume: | |
2516 | case bp_step_resume: | |
e514a9d6 JM |
2517 | case bp_watchpoint_scope: |
2518 | case bp_call_dummy: | |
1042e4c0 | 2519 | case bp_tracepoint: |
e514a9d6 | 2520 | default: |
f7545552 TT |
2521 | result = PRINT_UNKNOWN; |
2522 | break; | |
e514a9d6 | 2523 | } |
f7545552 TT |
2524 | |
2525 | do_cleanups (old_chain); | |
2526 | return result; | |
e514a9d6 JM |
2527 | } |
2528 | ||
2529 | /* Generic routine for printing messages indicating why we | |
2530 | stopped. The behavior of this function depends on the value | |
2531 | 'print_it' in the bpstat structure. Under some circumstances we | |
2532 | may decide not to print anything here and delegate the task to | |
2533 | normal_stop(). */ | |
2534 | ||
2535 | static enum print_stop_action | |
2536 | print_bp_stop_message (bpstat bs) | |
2537 | { | |
2538 | switch (bs->print_it) | |
2539 | { | |
2540 | case print_it_noop: | |
2541 | /* Nothing should be printed for this bpstat entry. */ | |
2542 | return PRINT_UNKNOWN; | |
2543 | break; | |
2544 | ||
2545 | case print_it_done: | |
2546 | /* We still want to print the frame, but we already printed the | |
2547 | relevant messages. */ | |
2548 | return PRINT_SRC_AND_LOC; | |
2549 | break; | |
2550 | ||
2551 | case print_it_normal: | |
4f8d1dc6 | 2552 | { |
89f9893c | 2553 | const struct bp_location *bl = bs->breakpoint_at; |
4f8d1dc6 VP |
2554 | struct breakpoint *b = bl ? bl->owner : NULL; |
2555 | ||
2556 | /* Normal case. Call the breakpoint's print_it method, or | |
2557 | print_it_typical. */ | |
2558 | /* FIXME: how breakpoint can ever be NULL here? */ | |
2559 | if (b != NULL && b->ops != NULL && b->ops->print_it != NULL) | |
2560 | return b->ops->print_it (b); | |
2561 | else | |
2562 | return print_it_typical (bs); | |
2563 | } | |
2564 | break; | |
3086aeae | 2565 | |
e514a9d6 | 2566 | default: |
8e65ff28 | 2567 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2568 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 2569 | break; |
c906108c | 2570 | } |
c906108c SS |
2571 | } |
2572 | ||
e514a9d6 JM |
2573 | /* Print a message indicating what happened. This is called from |
2574 | normal_stop(). The input to this routine is the head of the bpstat | |
2575 | list - a list of the eventpoints that caused this stop. This | |
2576 | routine calls the generic print routine for printing a message | |
2577 | about reasons for stopping. This will print (for example) the | |
2578 | "Breakpoint n," part of the output. The return value of this | |
2579 | routine is one of: | |
c906108c | 2580 | |
917317f4 JM |
2581 | PRINT_UNKNOWN: Means we printed nothing |
2582 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2583 | code to print the location. An example is |
2584 | "Breakpoint 1, " which should be followed by | |
2585 | the location. | |
917317f4 | 2586 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2587 | to also print the location part of the message. |
2588 | An example is the catch/throw messages, which | |
917317f4 JM |
2589 | don't require a location appended to the end. |
2590 | PRINT_NOTHING: We have done some printing and we don't need any | |
2591 | further info to be printed.*/ | |
c906108c | 2592 | |
917317f4 | 2593 | enum print_stop_action |
fba45db2 | 2594 | bpstat_print (bpstat bs) |
c906108c SS |
2595 | { |
2596 | int val; | |
c5aa993b | 2597 | |
c906108c | 2598 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2599 | (Currently all watchpoints go on the bpstat whether hit or not. |
2600 | That probably could (should) be changed, provided care is taken | |
c906108c | 2601 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2602 | for (; bs; bs = bs->next) |
2603 | { | |
2604 | val = print_bp_stop_message (bs); | |
2605 | if (val == PRINT_SRC_ONLY | |
2606 | || val == PRINT_SRC_AND_LOC | |
2607 | || val == PRINT_NOTHING) | |
2608 | return val; | |
2609 | } | |
c906108c | 2610 | |
e514a9d6 JM |
2611 | /* We reached the end of the chain, or we got a null BS to start |
2612 | with and nothing was printed. */ | |
917317f4 | 2613 | return PRINT_UNKNOWN; |
c906108c SS |
2614 | } |
2615 | ||
2616 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2617 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2618 | The argument is a "struct expression *" that has been cast to char * to | |
2619 | make it pass through catch_errors. */ | |
2620 | ||
2621 | static int | |
4efb68b1 | 2622 | breakpoint_cond_eval (void *exp) |
c906108c | 2623 | { |
278cd55f | 2624 | struct value *mark = value_mark (); |
c5aa993b | 2625 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2626 | value_free_to_mark (mark); |
2627 | return i; | |
2628 | } | |
2629 | ||
2630 | /* Allocate a new bpstat and chain it to the current one. */ | |
2631 | ||
2632 | static bpstat | |
89f9893c | 2633 | bpstat_alloc (const struct bp_location *bl, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
2634 | { |
2635 | bpstat bs; | |
2636 | ||
2637 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2638 | cbs->next = bs; | |
4f8d1dc6 | 2639 | bs->breakpoint_at = bl; |
c906108c SS |
2640 | /* If the condition is false, etc., don't do the commands. */ |
2641 | bs->commands = NULL; | |
2642 | bs->old_val = NULL; | |
2643 | bs->print_it = print_it_normal; | |
2644 | return bs; | |
2645 | } | |
2646 | \f | |
d983da9c DJ |
2647 | /* The target has stopped with waitstatus WS. Check if any hardware |
2648 | watchpoints have triggered, according to the target. */ | |
2649 | ||
2650 | int | |
2651 | watchpoints_triggered (struct target_waitstatus *ws) | |
2652 | { | |
d92524f1 | 2653 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
2654 | CORE_ADDR addr; |
2655 | struct breakpoint *b; | |
2656 | ||
2657 | if (!stopped_by_watchpoint) | |
2658 | { | |
2659 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
2660 | as not triggered. */ | |
2661 | ALL_BREAKPOINTS (b) | |
2662 | if (b->type == bp_hardware_watchpoint | |
2663 | || b->type == bp_read_watchpoint | |
2664 | || b->type == bp_access_watchpoint) | |
2665 | b->watchpoint_triggered = watch_triggered_no; | |
2666 | ||
2667 | return 0; | |
2668 | } | |
2669 | ||
2670 | if (!target_stopped_data_address (¤t_target, &addr)) | |
2671 | { | |
2672 | /* We were stopped by a watchpoint, but we don't know where. | |
2673 | Mark all watchpoints as unknown. */ | |
2674 | ALL_BREAKPOINTS (b) | |
2675 | if (b->type == bp_hardware_watchpoint | |
2676 | || b->type == bp_read_watchpoint | |
2677 | || b->type == bp_access_watchpoint) | |
2678 | b->watchpoint_triggered = watch_triggered_unknown; | |
2679 | ||
2680 | return stopped_by_watchpoint; | |
2681 | } | |
2682 | ||
2683 | /* The target could report the data address. Mark watchpoints | |
2684 | affected by this data address as triggered, and all others as not | |
2685 | triggered. */ | |
2686 | ||
2687 | ALL_BREAKPOINTS (b) | |
2688 | if (b->type == bp_hardware_watchpoint | |
2689 | || b->type == bp_read_watchpoint | |
2690 | || b->type == bp_access_watchpoint) | |
2691 | { | |
a5606eee | 2692 | struct bp_location *loc; |
d983da9c DJ |
2693 | struct value *v; |
2694 | ||
2695 | b->watchpoint_triggered = watch_triggered_no; | |
a5606eee VP |
2696 | for (loc = b->loc; loc; loc = loc->next) |
2697 | /* Exact match not required. Within range is | |
2698 | sufficient. */ | |
5009afc5 AS |
2699 | if (target_watchpoint_addr_within_range (¤t_target, |
2700 | addr, loc->address, | |
2701 | loc->length)) | |
a5606eee VP |
2702 | { |
2703 | b->watchpoint_triggered = watch_triggered_yes; | |
2704 | break; | |
2705 | } | |
d983da9c DJ |
2706 | } |
2707 | ||
2708 | return 1; | |
2709 | } | |
2710 | ||
c906108c SS |
2711 | /* Possible return values for watchpoint_check (this can't be an enum |
2712 | because of check_errors). */ | |
2713 | /* The watchpoint has been deleted. */ | |
2714 | #define WP_DELETED 1 | |
2715 | /* The value has changed. */ | |
2716 | #define WP_VALUE_CHANGED 2 | |
2717 | /* The value has not changed. */ | |
2718 | #define WP_VALUE_NOT_CHANGED 3 | |
2719 | ||
2720 | #define BP_TEMPFLAG 1 | |
2721 | #define BP_HARDWAREFLAG 2 | |
2722 | ||
2723 | /* Check watchpoint condition. */ | |
2724 | ||
2725 | static int | |
4efb68b1 | 2726 | watchpoint_check (void *p) |
c906108c SS |
2727 | { |
2728 | bpstat bs = (bpstat) p; | |
2729 | struct breakpoint *b; | |
2730 | struct frame_info *fr; | |
2731 | int within_current_scope; | |
2732 | ||
4f8d1dc6 | 2733 | b = bs->breakpoint_at->owner; |
c906108c SS |
2734 | |
2735 | if (b->exp_valid_block == NULL) | |
2736 | within_current_scope = 1; | |
2737 | else | |
2738 | { | |
2739 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2740 | any chance of handling watchpoints on local variables, we'll need |
2741 | the frame chain (so we can determine if we're in scope). */ | |
2742 | reinit_frame_cache (); | |
101dcfbe | 2743 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 2744 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
2745 | |
2746 | /* If we've gotten confused in the unwinder, we might have | |
2747 | returned a frame that can't describe this variable. */ | |
2748 | if (within_current_scope | |
7f0df278 DJ |
2749 | && (block_linkage_function (b->exp_valid_block) |
2750 | != get_frame_function (fr))) | |
69fbadd5 DJ |
2751 | within_current_scope = 0; |
2752 | ||
c12260ac CV |
2753 | /* in_function_epilogue_p() returns a non-zero value if we're still |
2754 | in the function but the stack frame has already been invalidated. | |
2755 | Since we can't rely on the values of local variables after the | |
2756 | stack has been destroyed, we are treating the watchpoint in that | |
a957e642 CV |
2757 | state as `not changed' without further checking. |
2758 | ||
2759 | vinschen/2003-09-04: The former implementation left out the case | |
2760 | that the watchpoint frame couldn't be found by frame_find_by_id() | |
2761 | because the current PC is currently in an epilogue. Calling | |
2762 | gdbarch_in_function_epilogue_p() also when fr == NULL fixes that. */ | |
fb14de7b UW |
2763 | if (!within_current_scope || fr == get_current_frame ()) |
2764 | { | |
2765 | struct frame_info *frame = get_current_frame (); | |
2766 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
2767 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
2768 | ||
2769 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) | |
2770 | return WP_VALUE_NOT_CHANGED; | |
2771 | } | |
a6fbcf2f | 2772 | if (fr && within_current_scope) |
c906108c SS |
2773 | /* If we end up stopping, the current frame will get selected |
2774 | in normal_stop. So this call to select_frame won't affect | |
2775 | the user. */ | |
0f7d239c | 2776 | select_frame (fr); |
c906108c | 2777 | } |
c5aa993b | 2778 | |
c906108c SS |
2779 | if (within_current_scope) |
2780 | { | |
2781 | /* We use value_{,free_to_}mark because it could be a | |
2782 | *long* time before we return to the command level and | |
c5aa993b JM |
2783 | call free_all_values. We can't call free_all_values because |
2784 | we might be in the middle of evaluating a function call. */ | |
c906108c | 2785 | |
278cd55f | 2786 | struct value *mark = value_mark (); |
fa4727a6 DJ |
2787 | struct value *new_val; |
2788 | ||
2789 | fetch_watchpoint_value (b->exp, &new_val, NULL, NULL); | |
2790 | if ((b->val != NULL) != (new_val != NULL) | |
2791 | || (b->val != NULL && !value_equal (b->val, new_val))) | |
c906108c | 2792 | { |
fa4727a6 DJ |
2793 | if (new_val != NULL) |
2794 | { | |
2795 | release_value (new_val); | |
2796 | value_free_to_mark (mark); | |
2797 | } | |
c906108c SS |
2798 | bs->old_val = b->val; |
2799 | b->val = new_val; | |
fa4727a6 | 2800 | b->val_valid = 1; |
c906108c SS |
2801 | /* We will stop here */ |
2802 | return WP_VALUE_CHANGED; | |
2803 | } | |
2804 | else | |
2805 | { | |
2806 | /* Nothing changed, don't do anything. */ | |
2807 | value_free_to_mark (mark); | |
2808 | /* We won't stop here */ | |
2809 | return WP_VALUE_NOT_CHANGED; | |
2810 | } | |
2811 | } | |
2812 | else | |
2813 | { | |
2814 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2815 | if we temporarily ignored the watchpoint, then when |
2816 | we reenter the block in which it is valid it contains | |
2817 | garbage (in the case of a function, it may have two | |
2818 | garbage values, one before and one after the prologue). | |
2819 | So we can't even detect the first assignment to it and | |
2820 | watch after that (since the garbage may or may not equal | |
2821 | the first value assigned). */ | |
4ce44c66 JM |
2822 | /* We print all the stop information in print_it_typical(), but |
2823 | in this case, by the time we call print_it_typical() this bp | |
2824 | will be deleted already. So we have no choice but print the | |
2825 | information here. */ | |
9dc5e2a9 | 2826 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2827 | ui_out_field_string |
2828 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 2829 | ui_out_text (uiout, "\nWatchpoint "); |
4f8d1dc6 | 2830 | ui_out_field_int (uiout, "wpnum", b->number); |
8b93c638 JM |
2831 | ui_out_text (uiout, " deleted because the program has left the block in\n\ |
2832 | which its expression is valid.\n"); | |
4ce44c66 | 2833 | |
c906108c | 2834 | if (b->related_breakpoint) |
b5de0fa7 EZ |
2835 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2836 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
2837 | |
2838 | return WP_DELETED; | |
2839 | } | |
2840 | } | |
2841 | ||
18a18393 VP |
2842 | /* Return true if it looks like target has stopped due to hitting |
2843 | breakpoint location BL. This function does not check if we | |
2844 | should stop, only if BL explains the stop. */ | |
2845 | static int | |
2846 | bpstat_check_location (const struct bp_location *bl, CORE_ADDR bp_addr) | |
2847 | { | |
2848 | struct breakpoint *b = bl->owner; | |
2849 | ||
2850 | if (b->type != bp_watchpoint | |
2851 | && b->type != bp_hardware_watchpoint | |
2852 | && b->type != bp_read_watchpoint | |
2853 | && b->type != bp_access_watchpoint | |
2854 | && b->type != bp_hardware_breakpoint | |
fe798b75 | 2855 | && b->type != bp_catchpoint) /* a non-watchpoint bp */ |
18a18393 VP |
2856 | { |
2857 | if (bl->address != bp_addr) /* address doesn't match */ | |
2858 | return 0; | |
2859 | if (overlay_debugging /* unmapped overlay section */ | |
2860 | && section_is_overlay (bl->section) | |
2861 | && !section_is_mapped (bl->section)) | |
2862 | return 0; | |
2863 | } | |
2864 | ||
2865 | /* Continuable hardware watchpoints are treated as non-existent if the | |
2866 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
2867 | some data address). Otherwise gdb won't stop on a break instruction | |
2868 | in the code (not from a breakpoint) when a hardware watchpoint has | |
2869 | been defined. Also skip watchpoints which we know did not trigger | |
2870 | (did not match the data address). */ | |
2871 | ||
2872 | if ((b->type == bp_hardware_watchpoint | |
2873 | || b->type == bp_read_watchpoint | |
2874 | || b->type == bp_access_watchpoint) | |
2875 | && b->watchpoint_triggered == watch_triggered_no) | |
2876 | return 0; | |
2877 | ||
2878 | if (b->type == bp_hardware_breakpoint) | |
2879 | { | |
2880 | if (bl->address != bp_addr) | |
2881 | return 0; | |
2882 | if (overlay_debugging /* unmapped overlay section */ | |
2883 | && section_is_overlay (bl->section) | |
2884 | && !section_is_mapped (bl->section)) | |
2885 | return 0; | |
2886 | } | |
ce78b96d | 2887 | |
ce78b96d JB |
2888 | if (b->type == bp_catchpoint) |
2889 | { | |
2890 | gdb_assert (b->ops != NULL && b->ops->breakpoint_hit != NULL); | |
2891 | if (!b->ops->breakpoint_hit (b)) | |
2892 | return 0; | |
2893 | } | |
2894 | ||
18a18393 VP |
2895 | return 1; |
2896 | } | |
2897 | ||
2898 | /* If BS refers to a watchpoint, determine if the watched values | |
2899 | has actually changed, and we should stop. If not, set BS->stop | |
2900 | to 0. */ | |
2901 | static void | |
2902 | bpstat_check_watchpoint (bpstat bs) | |
2903 | { | |
2904 | const struct bp_location *bl = bs->breakpoint_at; | |
2905 | struct breakpoint *b = bl->owner; | |
2906 | ||
2907 | if (b->type == bp_watchpoint | |
2908 | || b->type == bp_read_watchpoint | |
2909 | || b->type == bp_access_watchpoint | |
2910 | || b->type == bp_hardware_watchpoint) | |
2911 | { | |
2912 | CORE_ADDR addr; | |
2913 | struct value *v; | |
2914 | int must_check_value = 0; | |
2915 | ||
2916 | if (b->type == bp_watchpoint) | |
2917 | /* For a software watchpoint, we must always check the | |
2918 | watched value. */ | |
2919 | must_check_value = 1; | |
2920 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
2921 | /* We have a hardware watchpoint (read, write, or access) | |
2922 | and the target earlier reported an address watched by | |
2923 | this watchpoint. */ | |
2924 | must_check_value = 1; | |
2925 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
2926 | && b->type == bp_hardware_watchpoint) | |
2927 | /* We were stopped by a hardware watchpoint, but the target could | |
2928 | not report the data address. We must check the watchpoint's | |
2929 | value. Access and read watchpoints are out of luck; without | |
2930 | a data address, we can't figure it out. */ | |
2931 | must_check_value = 1; | |
2932 | ||
2933 | if (must_check_value) | |
2934 | { | |
2935 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
2936 | b->number); | |
2937 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2938 | int e = catch_errors (watchpoint_check, bs, message, | |
2939 | RETURN_MASK_ALL); | |
2940 | do_cleanups (cleanups); | |
2941 | switch (e) | |
2942 | { | |
2943 | case WP_DELETED: | |
2944 | /* We've already printed what needs to be printed. */ | |
2945 | bs->print_it = print_it_done; | |
2946 | /* Stop. */ | |
2947 | break; | |
2948 | case WP_VALUE_CHANGED: | |
2949 | if (b->type == bp_read_watchpoint) | |
2950 | { | |
2951 | /* Don't stop: read watchpoints shouldn't fire if | |
2952 | the value has changed. This is for targets | |
2953 | which cannot set read-only watchpoints. */ | |
2954 | bs->print_it = print_it_noop; | |
2955 | bs->stop = 0; | |
2956 | } | |
2957 | break; | |
2958 | case WP_VALUE_NOT_CHANGED: | |
2959 | if (b->type == bp_hardware_watchpoint | |
2960 | || b->type == bp_watchpoint) | |
2961 | { | |
2962 | /* Don't stop: write watchpoints shouldn't fire if | |
2963 | the value hasn't changed. */ | |
2964 | bs->print_it = print_it_noop; | |
2965 | bs->stop = 0; | |
2966 | } | |
2967 | /* Stop. */ | |
2968 | break; | |
2969 | default: | |
2970 | /* Can't happen. */ | |
2971 | case 0: | |
2972 | /* Error from catch_errors. */ | |
2973 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); | |
2974 | if (b->related_breakpoint) | |
2975 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
2976 | b->disposition = disp_del_at_next_stop; | |
2977 | /* We've already printed what needs to be printed. */ | |
2978 | bs->print_it = print_it_done; | |
2979 | break; | |
2980 | } | |
2981 | } | |
2982 | else /* must_check_value == 0 */ | |
2983 | { | |
2984 | /* This is a case where some watchpoint(s) triggered, but | |
2985 | not at the address of this watchpoint, or else no | |
2986 | watchpoint triggered after all. So don't print | |
2987 | anything for this watchpoint. */ | |
2988 | bs->print_it = print_it_noop; | |
2989 | bs->stop = 0; | |
2990 | } | |
2991 | } | |
2992 | } | |
2993 | ||
2994 | ||
2995 | /* Check conditions (condition proper, frame, thread and ignore count) | |
2996 | of breakpoint referred to by BS. If we should not stop for this | |
2997 | breakpoint, set BS->stop to 0. */ | |
2998 | static void | |
2999 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
3000 | { | |
3001 | int thread_id = pid_to_thread_id (ptid); | |
3002 | const struct bp_location *bl = bs->breakpoint_at; | |
3003 | struct breakpoint *b = bl->owner; | |
3004 | ||
3005 | if (frame_id_p (b->frame_id) | |
3006 | && !frame_id_eq (b->frame_id, get_frame_id (get_current_frame ()))) | |
3007 | bs->stop = 0; | |
3008 | else if (bs->stop) | |
3009 | { | |
3010 | int value_is_zero = 0; | |
3011 | ||
3012 | /* If this is a scope breakpoint, mark the associated | |
3013 | watchpoint as triggered so that we will handle the | |
3014 | out-of-scope event. We'll get to the watchpoint next | |
3015 | iteration. */ | |
3016 | if (b->type == bp_watchpoint_scope) | |
3017 | b->related_breakpoint->watchpoint_triggered = watch_triggered_yes; | |
3018 | ||
3019 | if (bl->cond && bl->owner->disposition != disp_del_at_next_stop) | |
3020 | { | |
c5bc3a77 DJ |
3021 | /* We use value_mark and value_free_to_mark because it could |
3022 | be a long time before we return to the command level and | |
3023 | call free_all_values. We can't call free_all_values | |
3024 | because we might be in the middle of evaluating a | |
3025 | function call. */ | |
3026 | struct value *mark = value_mark (); | |
3027 | ||
18a18393 VP |
3028 | /* Need to select the frame, with all that implies |
3029 | so that the conditions will have the right context. */ | |
3030 | select_frame (get_current_frame ()); | |
3031 | value_is_zero | |
3032 | = catch_errors (breakpoint_cond_eval, (bl->cond), | |
3033 | "Error in testing breakpoint condition:\n", | |
3034 | RETURN_MASK_ALL); | |
3035 | /* FIXME-someday, should give breakpoint # */ | |
c5bc3a77 | 3036 | value_free_to_mark (mark); |
18a18393 VP |
3037 | } |
3038 | if (bl->cond && value_is_zero) | |
3039 | { | |
3040 | bs->stop = 0; | |
3041 | } | |
3042 | else if (b->thread != -1 && b->thread != thread_id) | |
3043 | { | |
3044 | bs->stop = 0; | |
3045 | } | |
3046 | else if (b->ignore_count > 0) | |
3047 | { | |
3048 | b->ignore_count--; | |
3049 | annotate_ignore_count_change (); | |
3050 | bs->stop = 0; | |
3051 | /* Increase the hit count even though we don't | |
3052 | stop. */ | |
3053 | ++(b->hit_count); | |
3054 | } | |
3055 | } | |
3056 | } | |
3057 | ||
3058 | ||
9709f61c | 3059 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 3060 | BP_ADDR in thread PTID. |
c906108c | 3061 | |
d983da9c | 3062 | Determine whether we stopped at a breakpoint, etc, or whether we |
c906108c SS |
3063 | don't understand this stop. Result is a chain of bpstat's such that: |
3064 | ||
c5aa993b | 3065 | if we don't understand the stop, the result is a null pointer. |
c906108c | 3066 | |
c5aa993b | 3067 | if we understand why we stopped, the result is not null. |
c906108c | 3068 | |
c5aa993b JM |
3069 | Each element of the chain refers to a particular breakpoint or |
3070 | watchpoint at which we have stopped. (We may have stopped for | |
3071 | several reasons concurrently.) | |
c906108c | 3072 | |
c5aa993b JM |
3073 | Each element of the chain has valid next, breakpoint_at, |
3074 | commands, FIXME??? fields. */ | |
c906108c SS |
3075 | |
3076 | bpstat | |
d983da9c | 3077 | bpstat_stop_status (CORE_ADDR bp_addr, ptid_t ptid) |
c906108c | 3078 | { |
0d381245 | 3079 | struct breakpoint *b = NULL; |
89f9893c | 3080 | const struct bp_location *bl; |
20874c92 | 3081 | struct bp_location *loc; |
c906108c SS |
3082 | /* Root of the chain of bpstat's */ |
3083 | struct bpstats root_bs[1]; | |
3084 | /* Pointer to the last thing in the chain currently. */ | |
3085 | bpstat bs = root_bs; | |
20874c92 | 3086 | int ix; |
d832cb68 | 3087 | int need_remove_insert; |
c906108c | 3088 | |
0d381245 | 3089 | ALL_BP_LOCATIONS (bl) |
c5aa993b | 3090 | { |
0d381245 VP |
3091 | b = bl->owner; |
3092 | gdb_assert (b); | |
468d015d | 3093 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) |
c5aa993b JM |
3094 | continue; |
3095 | ||
a5606eee VP |
3096 | /* For hardware watchpoints, we look only at the first location. |
3097 | The watchpoint_check function will work on entire expression, | |
3098 | not the individual locations. For read watchopints, the | |
3099 | watchpoints_triggered function have checked all locations | |
3100 | alrea | |
3101 | */ | |
3102 | if (b->type == bp_hardware_watchpoint && bl != b->loc) | |
3103 | continue; | |
3104 | ||
18a18393 VP |
3105 | if (!bpstat_check_location (bl, bp_addr)) |
3106 | continue; | |
3107 | ||
c5aa993b JM |
3108 | /* Come here if it's a watchpoint, or if the break address matches */ |
3109 | ||
0d381245 | 3110 | bs = bpstat_alloc (bl, bs); /* Alloc a bpstat to explain stop */ |
c5aa993b | 3111 | |
18a18393 VP |
3112 | /* Assume we stop. Should we find watchpoint that is not actually |
3113 | triggered, or if condition of breakpoint is false, we'll reset | |
3114 | 'stop' to 0. */ | |
c5aa993b JM |
3115 | bs->stop = 1; |
3116 | bs->print = 1; | |
3117 | ||
18a18393 VP |
3118 | bpstat_check_watchpoint (bs); |
3119 | if (!bs->stop) | |
3120 | continue; | |
c5aa993b | 3121 | |
18a18393 VP |
3122 | if (b->type == bp_thread_event || b->type == bp_overlay_event) |
3123 | /* We do not stop for these. */ | |
c5aa993b JM |
3124 | bs->stop = 0; |
3125 | else | |
18a18393 VP |
3126 | bpstat_check_breakpoint_conditions (bs, ptid); |
3127 | ||
3128 | if (bs->stop) | |
c5aa993b | 3129 | { |
18a18393 | 3130 | ++(b->hit_count); |
d983da9c | 3131 | |
18a18393 VP |
3132 | /* We will stop here */ |
3133 | if (b->disposition == disp_disable) | |
c5aa993b | 3134 | { |
514f746b AR |
3135 | if (b->enable_state != bp_permanent) |
3136 | b->enable_state = bp_disabled; | |
b60e7edf | 3137 | update_global_location_list (0); |
c5aa993b | 3138 | } |
18a18393 VP |
3139 | if (b->silent) |
3140 | bs->print = 0; | |
3141 | bs->commands = b->commands; | |
059fb39f PM |
3142 | if (bs->commands |
3143 | && (strcmp ("silent", bs->commands->line) == 0 | |
3144 | || (xdb_commands && strcmp ("Q", bs->commands->line) == 0))) | |
c5aa993b | 3145 | { |
18a18393 VP |
3146 | bs->commands = bs->commands->next; |
3147 | bs->print = 0; | |
c5aa993b | 3148 | } |
18a18393 | 3149 | bs->commands = copy_command_lines (bs->commands); |
c5aa993b | 3150 | } |
18a18393 | 3151 | |
c5aa993b JM |
3152 | /* Print nothing for this entry if we dont stop or if we dont print. */ |
3153 | if (bs->stop == 0 || bs->print == 0) | |
3154 | bs->print_it = print_it_noop; | |
3155 | } | |
c906108c | 3156 | |
20874c92 VP |
3157 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) |
3158 | { | |
3159 | if (loc->address == bp_addr) | |
3160 | { | |
3161 | bs = bpstat_alloc (loc, bs); | |
3162 | /* For hits of moribund locations, we should just proceed. */ | |
3163 | bs->stop = 0; | |
3164 | bs->print = 0; | |
3165 | bs->print_it = print_it_noop; | |
3166 | } | |
3167 | } | |
3168 | ||
c906108c SS |
3169 | bs->next = NULL; /* Terminate the chain */ |
3170 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
3171 | ||
d983da9c DJ |
3172 | /* If we aren't stopping, the value of some hardware watchpoint may |
3173 | not have changed, but the intermediate memory locations we are | |
3174 | watching may have. Don't bother if we're stopping; this will get | |
3175 | done later. */ | |
3176 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3177 | if (bs->stop) | |
3178 | break; | |
3179 | ||
d832cb68 | 3180 | need_remove_insert = 0; |
d983da9c DJ |
3181 | if (bs == NULL) |
3182 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3183 | if (!bs->stop | |
20874c92 | 3184 | && bs->breakpoint_at->owner |
d983da9c DJ |
3185 | && (bs->breakpoint_at->owner->type == bp_hardware_watchpoint |
3186 | || bs->breakpoint_at->owner->type == bp_read_watchpoint | |
3187 | || bs->breakpoint_at->owner->type == bp_access_watchpoint)) | |
3188 | { | |
a5606eee VP |
3189 | /* remove/insert can invalidate bs->breakpoint_at, if this |
3190 | location is no longer used by the watchpoint. Prevent | |
3191 | further code from trying to use it. */ | |
3192 | bs->breakpoint_at = NULL; | |
d832cb68 | 3193 | need_remove_insert = 1; |
d983da9c DJ |
3194 | } |
3195 | ||
d832cb68 DD |
3196 | if (need_remove_insert) |
3197 | { | |
3198 | remove_breakpoints (); | |
3199 | insert_breakpoints (); | |
3200 | } | |
3201 | ||
d983da9c | 3202 | return root_bs->next; |
c906108c SS |
3203 | } |
3204 | \f | |
3205 | /* Tell what to do about this bpstat. */ | |
3206 | struct bpstat_what | |
fba45db2 | 3207 | bpstat_what (bpstat bs) |
c906108c SS |
3208 | { |
3209 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
3210 | enum class |
3211 | { | |
3212 | /* This bpstat element has no effect on the main_action. */ | |
3213 | no_effect = 0, | |
3214 | ||
3215 | /* There was a watchpoint, stop but don't print. */ | |
3216 | wp_silent, | |
c906108c | 3217 | |
c5aa993b JM |
3218 | /* There was a watchpoint, stop and print. */ |
3219 | wp_noisy, | |
c906108c | 3220 | |
c5aa993b JM |
3221 | /* There was a breakpoint but we're not stopping. */ |
3222 | bp_nostop, | |
c906108c | 3223 | |
c5aa993b JM |
3224 | /* There was a breakpoint, stop but don't print. */ |
3225 | bp_silent, | |
c906108c | 3226 | |
c5aa993b JM |
3227 | /* There was a breakpoint, stop and print. */ |
3228 | bp_noisy, | |
c906108c | 3229 | |
c5aa993b JM |
3230 | /* We hit the longjmp breakpoint. */ |
3231 | long_jump, | |
c906108c | 3232 | |
c5aa993b JM |
3233 | /* We hit the longjmp_resume breakpoint. */ |
3234 | long_resume, | |
c906108c | 3235 | |
c5aa993b JM |
3236 | /* We hit the step_resume breakpoint. */ |
3237 | step_resume, | |
c906108c | 3238 | |
c5aa993b JM |
3239 | /* We hit the shared library event breakpoint. */ |
3240 | shlib_event, | |
c906108c | 3241 | |
c5aa993b JM |
3242 | /* This is just used to count how many enums there are. */ |
3243 | class_last | |
c906108c SS |
3244 | }; |
3245 | ||
3246 | /* Here is the table which drives this routine. So that we can | |
3247 | format it pretty, we define some abbreviations for the | |
3248 | enum bpstat_what codes. */ | |
3249 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
3250 | #define ss BPSTAT_WHAT_STOP_SILENT | |
3251 | #define sn BPSTAT_WHAT_STOP_NOISY | |
3252 | #define sgl BPSTAT_WHAT_SINGLE | |
3253 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
3254 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
c906108c | 3255 | #define sr BPSTAT_WHAT_STEP_RESUME |
c906108c | 3256 | #define shl BPSTAT_WHAT_CHECK_SHLIBS |
c906108c SS |
3257 | |
3258 | /* "Can't happen." Might want to print an error message. | |
3259 | abort() is not out of the question, but chances are GDB is just | |
3260 | a bit confused, not unusable. */ | |
3261 | #define err BPSTAT_WHAT_STOP_NOISY | |
3262 | ||
3263 | /* Given an old action and a class, come up with a new action. */ | |
3264 | /* One interesting property of this table is that wp_silent is the same | |
3265 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
3266 | after stopping, the check for whether to step over a breakpoint | |
3267 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
3268 | reference to how we stopped. We retain separate wp_silent and |
3269 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
3270 | |
3271 | Another possibly interesting property of this table is that | |
3272 | there's a partial ordering, priority-like, of the actions. Once | |
3273 | you've decided that some action is appropriate, you'll never go | |
3274 | back and decide something of a lower priority is better. The | |
3275 | ordering is: | |
3276 | ||
d81191fc JB |
3277 | kc < clr sgl shl slr sn sr ss |
3278 | sgl < shl slr sn sr ss | |
3279 | slr < err shl sn sr ss | |
3280 | clr < err shl sn sr ss | |
3281 | ss < shl sn sr | |
3282 | sn < shl sr | |
3283 | shl < sr | |
4d5b2cd7 | 3284 | sr < |
c5aa993b | 3285 | |
43ff13b4 JM |
3286 | What I think this means is that we don't need a damned table |
3287 | here. If you just put the rows and columns in the right order, | |
3288 | it'd look awfully regular. We could simply walk the bpstat list | |
3289 | and choose the highest priority action we find, with a little | |
78b6a731 | 3290 | logic to handle the 'err' cases. */ |
c906108c SS |
3291 | |
3292 | /* step_resume entries: a step resume breakpoint overrides another | |
3293 | breakpoint of signal handling (see comment in wait_for_inferior | |
fcf70625 | 3294 | at where we set the step_resume breakpoint). */ |
c906108c SS |
3295 | |
3296 | static const enum bpstat_what_main_action | |
c5aa993b JM |
3297 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
3298 | { | |
3299 | /* old action */ | |
d81191fc | 3300 | /* kc ss sn sgl slr clr sr shl |
c5aa993b JM |
3301 | */ |
3302 | /*no_effect */ | |
d81191fc | 3303 | {kc, ss, sn, sgl, slr, clr, sr, shl}, |
c5aa993b | 3304 | /*wp_silent */ |
d81191fc | 3305 | {ss, ss, sn, ss, ss, ss, sr, shl}, |
c5aa993b | 3306 | /*wp_noisy */ |
d81191fc | 3307 | {sn, sn, sn, sn, sn, sn, sr, shl}, |
c5aa993b | 3308 | /*bp_nostop */ |
d81191fc | 3309 | {sgl, ss, sn, sgl, slr, slr, sr, shl}, |
c5aa993b | 3310 | /*bp_silent */ |
d81191fc | 3311 | {ss, ss, sn, ss, ss, ss, sr, shl}, |
c5aa993b | 3312 | /*bp_noisy */ |
d81191fc | 3313 | {sn, sn, sn, sn, sn, sn, sr, shl}, |
c5aa993b | 3314 | /*long_jump */ |
d81191fc | 3315 | {slr, ss, sn, slr, slr, err, sr, shl}, |
c5aa993b | 3316 | /*long_resume */ |
d81191fc | 3317 | {clr, ss, sn, err, err, err, sr, shl}, |
c5aa993b | 3318 | /*step_resume */ |
d81191fc | 3319 | {sr, sr, sr, sr, sr, sr, sr, sr}, |
c5aa993b | 3320 | /*shlib */ |
d81191fc | 3321 | {shl, shl, shl, shl, shl, shl, sr, shl} |
c5aa993b | 3322 | }; |
c906108c SS |
3323 | |
3324 | #undef kc | |
3325 | #undef ss | |
3326 | #undef sn | |
3327 | #undef sgl | |
3328 | #undef slr | |
3329 | #undef clr | |
c906108c SS |
3330 | #undef err |
3331 | #undef sr | |
3332 | #undef ts | |
3333 | #undef shl | |
c906108c SS |
3334 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; |
3335 | struct bpstat_what retval; | |
3336 | ||
3337 | retval.call_dummy = 0; | |
3338 | for (; bs != NULL; bs = bs->next) | |
3339 | { | |
3340 | enum class bs_class = no_effect; | |
3341 | if (bs->breakpoint_at == NULL) | |
3342 | /* I suspect this can happen if it was a momentary breakpoint | |
3343 | which has since been deleted. */ | |
3344 | continue; | |
20874c92 VP |
3345 | if (bs->breakpoint_at->owner == NULL) |
3346 | bs_class = bp_nostop; | |
3347 | else | |
4f8d1dc6 | 3348 | switch (bs->breakpoint_at->owner->type) |
c906108c SS |
3349 | { |
3350 | case bp_none: | |
3351 | continue; | |
3352 | ||
3353 | case bp_breakpoint: | |
3354 | case bp_hardware_breakpoint: | |
3355 | case bp_until: | |
3356 | case bp_finish: | |
3357 | if (bs->stop) | |
3358 | { | |
3359 | if (bs->print) | |
3360 | bs_class = bp_noisy; | |
3361 | else | |
3362 | bs_class = bp_silent; | |
3363 | } | |
3364 | else | |
3365 | bs_class = bp_nostop; | |
3366 | break; | |
3367 | case bp_watchpoint: | |
3368 | case bp_hardware_watchpoint: | |
3369 | case bp_read_watchpoint: | |
3370 | case bp_access_watchpoint: | |
3371 | if (bs->stop) | |
3372 | { | |
3373 | if (bs->print) | |
3374 | bs_class = wp_noisy; | |
3375 | else | |
3376 | bs_class = wp_silent; | |
3377 | } | |
3378 | else | |
53a5351d JM |
3379 | /* There was a watchpoint, but we're not stopping. |
3380 | This requires no further action. */ | |
c906108c SS |
3381 | bs_class = no_effect; |
3382 | break; | |
3383 | case bp_longjmp: | |
3384 | bs_class = long_jump; | |
3385 | break; | |
3386 | case bp_longjmp_resume: | |
3387 | bs_class = long_resume; | |
3388 | break; | |
3389 | case bp_step_resume: | |
3390 | if (bs->stop) | |
3391 | { | |
3392 | bs_class = step_resume; | |
3393 | } | |
3394 | else | |
3395 | /* It is for the wrong frame. */ | |
3396 | bs_class = bp_nostop; | |
3397 | break; | |
c906108c SS |
3398 | case bp_watchpoint_scope: |
3399 | bs_class = bp_nostop; | |
3400 | break; | |
c5aa993b JM |
3401 | case bp_shlib_event: |
3402 | bs_class = shlib_event; | |
3403 | break; | |
c4093a6a | 3404 | case bp_thread_event: |
1900040c | 3405 | case bp_overlay_event: |
c4093a6a JM |
3406 | bs_class = bp_nostop; |
3407 | break; | |
ce78b96d | 3408 | case bp_catchpoint: |
c5aa993b JM |
3409 | if (bs->stop) |
3410 | { | |
3411 | if (bs->print) | |
3412 | bs_class = bp_noisy; | |
3413 | else | |
3414 | bs_class = bp_silent; | |
3415 | } | |
3416 | else | |
53a5351d JM |
3417 | /* There was a catchpoint, but we're not stopping. |
3418 | This requires no further action. */ | |
c5aa993b JM |
3419 | bs_class = no_effect; |
3420 | break; | |
c906108c | 3421 | case bp_call_dummy: |
53a5351d JM |
3422 | /* Make sure the action is stop (silent or noisy), |
3423 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
3424 | bs_class = bp_silent; |
3425 | retval.call_dummy = 1; | |
3426 | break; | |
1042e4c0 SS |
3427 | case bp_tracepoint: |
3428 | /* Tracepoint hits should not be reported back to GDB, and | |
3429 | if one got through somehow, it should have been filtered | |
3430 | out already. */ | |
3431 | internal_error (__FILE__, __LINE__, | |
3432 | _("bpstat_what: bp_tracepoint encountered")); | |
3433 | break; | |
c906108c | 3434 | } |
c5aa993b | 3435 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
3436 | } |
3437 | retval.main_action = current_action; | |
3438 | return retval; | |
3439 | } | |
3440 | ||
3441 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
3442 | without hardware support). This isn't related to a specific bpstat, | |
3443 | just to things like whether watchpoints are set. */ | |
3444 | ||
c5aa993b | 3445 | int |
fba45db2 | 3446 | bpstat_should_step (void) |
c906108c SS |
3447 | { |
3448 | struct breakpoint *b; | |
3449 | ALL_BREAKPOINTS (b) | |
717a8278 | 3450 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 3451 | return 1; |
c906108c SS |
3452 | return 0; |
3453 | } | |
3454 | ||
c906108c | 3455 | \f |
c5aa993b | 3456 | |
0d381245 VP |
3457 | static void print_breakpoint_location (struct breakpoint *b, |
3458 | struct bp_location *loc, | |
3459 | char *wrap_indent, | |
3460 | struct ui_stream *stb) | |
3461 | { | |
3462 | if (b->source_file) | |
3463 | { | |
3464 | struct symbol *sym | |
3465 | = find_pc_sect_function (loc->address, loc->section); | |
3466 | if (sym) | |
3467 | { | |
3468 | ui_out_text (uiout, "in "); | |
3469 | ui_out_field_string (uiout, "func", | |
3470 | SYMBOL_PRINT_NAME (sym)); | |
3471 | ui_out_wrap_hint (uiout, wrap_indent); | |
3472 | ui_out_text (uiout, " at "); | |
3473 | } | |
3474 | ui_out_field_string (uiout, "file", b->source_file); | |
3475 | ui_out_text (uiout, ":"); | |
3476 | ||
3477 | if (ui_out_is_mi_like_p (uiout)) | |
3478 | { | |
3479 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
3480 | char *fullname = symtab_to_fullname (sal.symtab); | |
3481 | ||
3482 | if (fullname) | |
3483 | ui_out_field_string (uiout, "fullname", fullname); | |
3484 | } | |
3485 | ||
3486 | ui_out_field_int (uiout, "line", b->line_number); | |
3487 | } | |
3488 | else if (!b->loc) | |
3489 | { | |
3490 | ui_out_field_string (uiout, "pending", b->addr_string); | |
3491 | } | |
3492 | else | |
3493 | { | |
3494 | print_address_symbolic (loc->address, stb->stream, demangle, ""); | |
3495 | ui_out_field_stream (uiout, "at", stb); | |
3496 | } | |
3497 | } | |
3498 | ||
c4093a6a | 3499 | /* Print B to gdb_stdout. */ |
c906108c | 3500 | static void |
0d381245 VP |
3501 | print_one_breakpoint_location (struct breakpoint *b, |
3502 | struct bp_location *loc, | |
3503 | int loc_number, | |
3504 | CORE_ADDR *last_addr) | |
c906108c | 3505 | { |
52f0bd74 AC |
3506 | struct command_line *l; |
3507 | struct symbol *sym; | |
c4093a6a JM |
3508 | struct ep_type_description |
3509 | { | |
3510 | enum bptype type; | |
3511 | char *description; | |
3512 | }; | |
3513 | static struct ep_type_description bptypes[] = | |
c906108c | 3514 | { |
c5aa993b JM |
3515 | {bp_none, "?deleted?"}, |
3516 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3517 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3518 | {bp_until, "until"}, |
3519 | {bp_finish, "finish"}, | |
3520 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3521 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3522 | {bp_read_watchpoint, "read watchpoint"}, |
3523 | {bp_access_watchpoint, "acc watchpoint"}, | |
3524 | {bp_longjmp, "longjmp"}, | |
3525 | {bp_longjmp_resume, "longjmp resume"}, | |
3526 | {bp_step_resume, "step resume"}, | |
c5aa993b JM |
3527 | {bp_watchpoint_scope, "watchpoint scope"}, |
3528 | {bp_call_dummy, "call dummy"}, | |
3529 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3530 | {bp_thread_event, "thread events"}, |
1900040c | 3531 | {bp_overlay_event, "overlay events"}, |
ce78b96d | 3532 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 3533 | {bp_tracepoint, "tracepoint"}, |
c5aa993b | 3534 | }; |
c4093a6a | 3535 | |
c2c6d25f | 3536 | static char bpenables[] = "nynny"; |
c906108c | 3537 | char wrap_indent[80]; |
8b93c638 JM |
3538 | struct ui_stream *stb = ui_out_stream_new (uiout); |
3539 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 3540 | struct cleanup *bkpt_chain; |
c906108c | 3541 | |
0d381245 VP |
3542 | int header_of_multiple = 0; |
3543 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
3544 | struct value_print_options opts; |
3545 | ||
3546 | get_user_print_options (&opts); | |
0d381245 VP |
3547 | |
3548 | gdb_assert (!loc || loc_number != 0); | |
3549 | /* See comment in print_one_breakpoint concerning | |
3550 | treatment of breakpoints with single disabled | |
3551 | location. */ | |
3552 | if (loc == NULL | |
3553 | && (b->loc != NULL | |
3554 | && (b->loc->next != NULL || !b->loc->enabled))) | |
3555 | header_of_multiple = 1; | |
3556 | if (loc == NULL) | |
3557 | loc = b->loc; | |
3558 | ||
c4093a6a | 3559 | annotate_record (); |
3b31d625 | 3560 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
3561 | |
3562 | /* 1 */ | |
3563 | annotate_field (0); | |
0d381245 VP |
3564 | if (part_of_multiple) |
3565 | { | |
3566 | char *formatted; | |
0c6773c1 | 3567 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
3568 | ui_out_field_string (uiout, "number", formatted); |
3569 | xfree (formatted); | |
3570 | } | |
3571 | else | |
3572 | { | |
3573 | ui_out_field_int (uiout, "number", b->number); | |
3574 | } | |
c4093a6a JM |
3575 | |
3576 | /* 2 */ | |
3577 | annotate_field (1); | |
0d381245 VP |
3578 | if (part_of_multiple) |
3579 | ui_out_field_skip (uiout, "type"); | |
3580 | else | |
3581 | { | |
3582 | if (((int) b->type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3583 | || ((int) b->type != bptypes[(int) b->type].type)) | |
3584 | internal_error (__FILE__, __LINE__, | |
3585 | _("bptypes table does not describe type #%d."), | |
3586 | (int) b->type); | |
3587 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); | |
3588 | } | |
c4093a6a JM |
3589 | |
3590 | /* 3 */ | |
3591 | annotate_field (2); | |
0d381245 VP |
3592 | if (part_of_multiple) |
3593 | ui_out_field_skip (uiout, "disp"); | |
3594 | else | |
2cec12e5 | 3595 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 3596 | |
c4093a6a JM |
3597 | |
3598 | /* 4 */ | |
3599 | annotate_field (3); | |
0d381245 | 3600 | if (part_of_multiple) |
54e52265 | 3601 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 3602 | else |
54e52265 VP |
3603 | ui_out_field_fmt (uiout, "enabled", "%c", |
3604 | bpenables[(int) b->enable_state]); | |
3605 | ui_out_spaces (uiout, 2); | |
0d381245 | 3606 | |
c4093a6a JM |
3607 | |
3608 | /* 5 and 6 */ | |
3609 | strcpy (wrap_indent, " "); | |
79a45b7d | 3610 | if (opts.addressprint) |
75ac9d7b | 3611 | { |
17a912b6 | 3612 | if (gdbarch_addr_bit (current_gdbarch) <= 32) |
75ac9d7b MS |
3613 | strcat (wrap_indent, " "); |
3614 | else | |
3615 | strcat (wrap_indent, " "); | |
3616 | } | |
c906108c | 3617 | |
3086aeae | 3618 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 VP |
3619 | { |
3620 | /* Although the print_one can possibly print | |
3621 | all locations, calling it here is not likely | |
3622 | to get any nice result. So, make sure there's | |
3623 | just one location. */ | |
3624 | gdb_assert (b->loc == NULL || b->loc->next == NULL); | |
3625 | b->ops->print_one (b, last_addr); | |
3626 | } | |
3086aeae DJ |
3627 | else |
3628 | switch (b->type) | |
3629 | { | |
3630 | case bp_none: | |
3631 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 3632 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 3633 | break; |
c906108c | 3634 | |
3086aeae DJ |
3635 | case bp_watchpoint: |
3636 | case bp_hardware_watchpoint: | |
3637 | case bp_read_watchpoint: | |
3638 | case bp_access_watchpoint: | |
3639 | /* Field 4, the address, is omitted (which makes the columns | |
3640 | not line up too nicely with the headers, but the effect | |
3641 | is relatively readable). */ | |
79a45b7d | 3642 | if (opts.addressprint) |
3086aeae DJ |
3643 | ui_out_field_skip (uiout, "addr"); |
3644 | annotate_field (5); | |
fa8a61dc | 3645 | ui_out_field_string (uiout, "what", b->exp_string); |
3086aeae DJ |
3646 | break; |
3647 | ||
3086aeae DJ |
3648 | case bp_breakpoint: |
3649 | case bp_hardware_breakpoint: | |
3650 | case bp_until: | |
3651 | case bp_finish: | |
3652 | case bp_longjmp: | |
3653 | case bp_longjmp_resume: | |
3654 | case bp_step_resume: | |
3086aeae DJ |
3655 | case bp_watchpoint_scope: |
3656 | case bp_call_dummy: | |
3657 | case bp_shlib_event: | |
3658 | case bp_thread_event: | |
3659 | case bp_overlay_event: | |
1042e4c0 | 3660 | case bp_tracepoint: |
79a45b7d | 3661 | if (opts.addressprint) |
3086aeae DJ |
3662 | { |
3663 | annotate_field (4); | |
54e52265 | 3664 | if (header_of_multiple) |
0d381245 | 3665 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 3666 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 3667 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 3668 | else |
0d381245 | 3669 | ui_out_field_core_addr (uiout, "addr", loc->address); |
3086aeae DJ |
3670 | } |
3671 | annotate_field (5); | |
0d381245 VP |
3672 | if (!header_of_multiple) |
3673 | print_breakpoint_location (b, loc, wrap_indent, stb); | |
3674 | if (b->loc) | |
3675 | *last_addr = b->loc->address; | |
3086aeae DJ |
3676 | break; |
3677 | } | |
c906108c | 3678 | |
4a306c9a | 3679 | if (!part_of_multiple) |
c4093a6a | 3680 | { |
4a306c9a JB |
3681 | if (b->thread != -1) |
3682 | { | |
3683 | /* FIXME: This seems to be redundant and lost here; see the | |
3684 | "stop only in" line a little further down. */ | |
3685 | ui_out_text (uiout, " thread "); | |
3686 | ui_out_field_int (uiout, "thread", b->thread); | |
3687 | } | |
3688 | else if (b->task != 0) | |
3689 | { | |
3690 | ui_out_text (uiout, " task "); | |
3691 | ui_out_field_int (uiout, "task", b->task); | |
3692 | } | |
c4093a6a JM |
3693 | } |
3694 | ||
8b93c638 | 3695 | ui_out_text (uiout, "\n"); |
c4093a6a | 3696 | |
0d381245 | 3697 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
3698 | { |
3699 | annotate_field (6); | |
8b93c638 | 3700 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
3701 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
3702 | the frame ID. */ | |
d0a55772 | 3703 | ui_out_field_core_addr (uiout, "frame", b->frame_id.stack_addr); |
8b93c638 | 3704 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
3705 | } |
3706 | ||
0d381245 | 3707 | if (!part_of_multiple && b->cond_string && !ada_exception_catchpoint_p (b)) |
c4093a6a | 3708 | { |
f7f9143b JB |
3709 | /* We do not print the condition for Ada exception catchpoints |
3710 | because the condition is an internal implementation detail | |
3711 | that we do not want to expose to the user. */ | |
c4093a6a | 3712 | annotate_field (7); |
1042e4c0 SS |
3713 | if (b->type == bp_tracepoint) |
3714 | ui_out_text (uiout, "\ttrace only if "); | |
3715 | else | |
3716 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 JJ |
3717 | ui_out_field_string (uiout, "cond", b->cond_string); |
3718 | ui_out_text (uiout, "\n"); | |
3719 | } | |
3720 | ||
0d381245 | 3721 | if (!part_of_multiple && b->thread != -1) |
c4093a6a JM |
3722 | { |
3723 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3724 | ui_out_text (uiout, "\tstop only in thread "); |
3725 | ui_out_field_int (uiout, "thread", b->thread); | |
3726 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3727 | } |
3728 | ||
63c715c6 | 3729 | if (!part_of_multiple && b->hit_count) |
c4093a6a JM |
3730 | { |
3731 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3732 | if (ep_is_catchpoint (b)) |
3733 | ui_out_text (uiout, "\tcatchpoint"); | |
3734 | else | |
3735 | ui_out_text (uiout, "\tbreakpoint"); | |
3736 | ui_out_text (uiout, " already hit "); | |
3737 | ui_out_field_int (uiout, "times", b->hit_count); | |
3738 | if (b->hit_count == 1) | |
3739 | ui_out_text (uiout, " time\n"); | |
3740 | else | |
3741 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
3742 | } |
3743 | ||
fb40c209 AC |
3744 | /* Output the count also if it is zero, but only if this is |
3745 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 3746 | if (ui_out_is_mi_like_p (uiout)) |
63c715c6 | 3747 | if (!part_of_multiple && b->hit_count == 0) |
fb40c209 | 3748 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 3749 | |
0d381245 | 3750 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
3751 | { |
3752 | annotate_field (8); | |
8b93c638 JM |
3753 | ui_out_text (uiout, "\tignore next "); |
3754 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3755 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 3756 | } |
059fb39f PM |
3757 | |
3758 | l = b->commands; | |
3759 | if (!part_of_multiple && l) | |
c4093a6a | 3760 | { |
3b31d625 EZ |
3761 | struct cleanup *script_chain; |
3762 | ||
c4093a6a | 3763 | annotate_field (9); |
3b31d625 | 3764 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 3765 | print_command_lines (uiout, l, 4); |
3b31d625 | 3766 | do_cleanups (script_chain); |
c4093a6a | 3767 | } |
d24317b4 | 3768 | |
1042e4c0 SS |
3769 | if (!part_of_multiple && b->pass_count) |
3770 | { | |
3771 | annotate_field (10); | |
3772 | ui_out_text (uiout, "\tpass count "); | |
3773 | ui_out_field_int (uiout, "pass", b->pass_count); | |
3774 | ui_out_text (uiout, " \n"); | |
3775 | } | |
3776 | ||
3777 | if (!part_of_multiple && b->step_count) | |
3778 | { | |
3779 | annotate_field (11); | |
3780 | ui_out_text (uiout, "\tstep count "); | |
3781 | ui_out_field_int (uiout, "step", b->step_count); | |
3782 | ui_out_text (uiout, " \n"); | |
3783 | } | |
3784 | ||
3785 | if (!part_of_multiple && b->actions) | |
3786 | { | |
3787 | struct action_line *action; | |
3788 | annotate_field (12); | |
3789 | for (action = b->actions; action; action = action->next) | |
3790 | { | |
3791 | ui_out_text (uiout, " A\t"); | |
3792 | ui_out_text (uiout, action->action); | |
3793 | ui_out_text (uiout, "\n"); | |
3794 | } | |
3795 | } | |
3796 | ||
d24317b4 VP |
3797 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
3798 | { | |
3799 | if (b->addr_string) | |
3800 | ui_out_field_string (uiout, "original-location", b->addr_string); | |
3801 | else if (b->exp_string) | |
3802 | ui_out_field_string (uiout, "original-location", b->exp_string); | |
3803 | } | |
3804 | ||
3b31d625 | 3805 | do_cleanups (bkpt_chain); |
8b93c638 | 3806 | do_cleanups (old_chain); |
c4093a6a | 3807 | } |
c5aa993b | 3808 | |
0d381245 VP |
3809 | static void |
3810 | print_one_breakpoint (struct breakpoint *b, | |
3811 | CORE_ADDR *last_addr) | |
3812 | { | |
3813 | print_one_breakpoint_location (b, NULL, 0, last_addr); | |
3814 | ||
3815 | /* If this breakpoint has custom print function, | |
3816 | it's already printed. Otherwise, print individual | |
3817 | locations, if any. */ | |
3818 | if (b->ops == NULL || b->ops->print_one == NULL) | |
3819 | { | |
3820 | /* If breakpoint has a single location that is | |
3821 | disabled, we print it as if it had | |
3822 | several locations, since otherwise it's hard to | |
3823 | represent "breakpoint enabled, location disabled" | |
a5606eee VP |
3824 | situation. |
3825 | Note that while hardware watchpoints have | |
3826 | several locations internally, that's no a property | |
3827 | exposed to user. */ | |
0d381245 | 3828 | if (b->loc |
a5606eee | 3829 | && !is_hardware_watchpoint (b) |
0d381245 | 3830 | && (b->loc->next || !b->loc->enabled) |
a5606eee | 3831 | && !ui_out_is_mi_like_p (uiout)) |
0d381245 VP |
3832 | { |
3833 | struct bp_location *loc; | |
3834 | int n = 1; | |
3835 | for (loc = b->loc; loc; loc = loc->next, ++n) | |
3836 | print_one_breakpoint_location (b, loc, n, last_addr); | |
3837 | } | |
3838 | } | |
3839 | } | |
3840 | ||
3841 | ||
c4093a6a JM |
3842 | struct captured_breakpoint_query_args |
3843 | { | |
3844 | int bnum; | |
3845 | }; | |
c5aa993b | 3846 | |
c4093a6a | 3847 | static int |
2b65245e | 3848 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
3849 | { |
3850 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 3851 | struct breakpoint *b; |
c4093a6a JM |
3852 | CORE_ADDR dummy_addr = 0; |
3853 | ALL_BREAKPOINTS (b) | |
3854 | { | |
3855 | if (args->bnum == b->number) | |
c5aa993b | 3856 | { |
c4093a6a JM |
3857 | print_one_breakpoint (b, &dummy_addr); |
3858 | return GDB_RC_OK; | |
c5aa993b | 3859 | } |
c4093a6a JM |
3860 | } |
3861 | return GDB_RC_NONE; | |
3862 | } | |
c5aa993b | 3863 | |
c4093a6a | 3864 | enum gdb_rc |
ce43223b | 3865 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, char **error_message) |
c4093a6a JM |
3866 | { |
3867 | struct captured_breakpoint_query_args args; | |
3868 | args.bnum = bnum; | |
3869 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3870 | an error. */ | |
b0b13bb4 DJ |
3871 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
3872 | error_message, RETURN_MASK_ALL) < 0) | |
3873 | return GDB_RC_FAIL; | |
3874 | else | |
3875 | return GDB_RC_OK; | |
c4093a6a | 3876 | } |
c5aa993b | 3877 | |
7f3b0473 AC |
3878 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
3879 | catchpoints, et.al.). */ | |
3880 | ||
3881 | static int | |
3882 | user_settable_breakpoint (const struct breakpoint *b) | |
3883 | { | |
3884 | return (b->type == bp_breakpoint | |
ce78b96d | 3885 | || b->type == bp_catchpoint |
7f3b0473 | 3886 | || b->type == bp_hardware_breakpoint |
1042e4c0 | 3887 | || b->type == bp_tracepoint |
7f3b0473 AC |
3888 | || b->type == bp_watchpoint |
3889 | || b->type == bp_read_watchpoint | |
3890 | || b->type == bp_access_watchpoint | |
3891 | || b->type == bp_hardware_watchpoint); | |
3892 | } | |
3893 | ||
3894 | /* Print information on user settable breakpoint (watchpoint, etc) | |
3895 | number BNUM. If BNUM is -1 print all user settable breakpoints. | |
3896 | If ALLFLAG is non-zero, include non- user settable breakpoints. */ | |
c906108c | 3897 | |
c4093a6a | 3898 | static void |
fba45db2 | 3899 | breakpoint_1 (int bnum, int allflag) |
c4093a6a | 3900 | { |
52f0bd74 | 3901 | struct breakpoint *b; |
c4093a6a | 3902 | CORE_ADDR last_addr = (CORE_ADDR) -1; |
7f3b0473 | 3903 | int nr_printable_breakpoints; |
3b31d625 | 3904 | struct cleanup *bkpttbl_chain; |
79a45b7d | 3905 | struct value_print_options opts; |
c4093a6a | 3906 | |
79a45b7d TT |
3907 | get_user_print_options (&opts); |
3908 | ||
7f3b0473 AC |
3909 | /* Compute the number of rows in the table. */ |
3910 | nr_printable_breakpoints = 0; | |
3911 | ALL_BREAKPOINTS (b) | |
3912 | if (bnum == -1 | |
3913 | || bnum == b->number) | |
3914 | { | |
3915 | if (allflag || user_settable_breakpoint (b)) | |
3916 | nr_printable_breakpoints++; | |
3917 | } | |
3918 | ||
79a45b7d | 3919 | if (opts.addressprint) |
3b31d625 EZ |
3920 | bkpttbl_chain |
3921 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
3922 | "BreakpointTable"); | |
8b93c638 | 3923 | else |
3b31d625 EZ |
3924 | bkpttbl_chain |
3925 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
3926 | "BreakpointTable"); | |
8b93c638 | 3927 | |
7f3b0473 | 3928 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
3929 | annotate_breakpoints_headers (); |
3930 | if (nr_printable_breakpoints > 0) | |
3931 | annotate_field (0); | |
0d381245 | 3932 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
3933 | if (nr_printable_breakpoints > 0) |
3934 | annotate_field (1); | |
3935 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
3936 | if (nr_printable_breakpoints > 0) | |
3937 | annotate_field (2); | |
3938 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
3939 | if (nr_printable_breakpoints > 0) | |
3940 | annotate_field (3); | |
54e52265 | 3941 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 3942 | if (opts.addressprint) |
7f3b0473 | 3943 | { |
d7faa9e7 AC |
3944 | if (nr_printable_breakpoints > 0) |
3945 | annotate_field (4); | |
17a912b6 | 3946 | if (gdbarch_addr_bit (current_gdbarch) <= 32) |
b25959ec | 3947 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3948 | else |
b25959ec | 3949 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3950 | } |
d7faa9e7 AC |
3951 | if (nr_printable_breakpoints > 0) |
3952 | annotate_field (5); | |
3953 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
3954 | ui_out_table_body (uiout); | |
3955 | if (nr_printable_breakpoints > 0) | |
3956 | annotate_breakpoints_table (); | |
7f3b0473 | 3957 | |
c4093a6a JM |
3958 | ALL_BREAKPOINTS (b) |
3959 | if (bnum == -1 | |
3960 | || bnum == b->number) | |
3961 | { | |
3962 | /* We only print out user settable breakpoints unless the | |
3963 | allflag is set. */ | |
7f3b0473 AC |
3964 | if (allflag || user_settable_breakpoint (b)) |
3965 | print_one_breakpoint (b, &last_addr); | |
c4093a6a JM |
3966 | } |
3967 | ||
3b31d625 | 3968 | do_cleanups (bkpttbl_chain); |
698384cd | 3969 | |
7f3b0473 | 3970 | if (nr_printable_breakpoints == 0) |
c906108c | 3971 | { |
8b93c638 JM |
3972 | if (bnum == -1) |
3973 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
3974 | else | |
3975 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
3976 | bnum); | |
c906108c SS |
3977 | } |
3978 | else | |
c4093a6a JM |
3979 | { |
3980 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
3981 | that a comparison of an unsigned with -1 is always false. */ | |
d1aa2f50 | 3982 | if (last_addr != (CORE_ADDR) -1 && !server_command) |
8b9b9e1a | 3983 | set_next_address (current_gdbarch, last_addr); |
c4093a6a | 3984 | } |
c906108c | 3985 | |
c4093a6a JM |
3986 | /* FIXME? Should this be moved up so that it is only called when |
3987 | there have been breakpoints? */ | |
c906108c SS |
3988 | annotate_breakpoints_table_end (); |
3989 | } | |
3990 | ||
c906108c | 3991 | static void |
fba45db2 | 3992 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
3993 | { |
3994 | int bnum = -1; | |
3995 | ||
3996 | if (bnum_exp) | |
bb518678 | 3997 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3998 | |
3999 | breakpoint_1 (bnum, 0); | |
4000 | } | |
4001 | ||
7a292a7a | 4002 | static void |
fba45db2 | 4003 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
4004 | { |
4005 | int bnum = -1; | |
4006 | ||
4007 | if (bnum_exp) | |
bb518678 | 4008 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
4009 | |
4010 | breakpoint_1 (bnum, 1); | |
4011 | } | |
4012 | ||
0d381245 | 4013 | static int |
714835d5 UW |
4014 | breakpoint_has_pc (struct breakpoint *b, |
4015 | CORE_ADDR pc, struct obj_section *section) | |
0d381245 VP |
4016 | { |
4017 | struct bp_location *bl = b->loc; | |
4018 | for (; bl; bl = bl->next) | |
4019 | { | |
4020 | if (bl->address == pc | |
4021 | && (!overlay_debugging || bl->section == section)) | |
4022 | return 1; | |
4023 | } | |
4024 | return 0; | |
4025 | } | |
4026 | ||
c906108c SS |
4027 | /* Print a message describing any breakpoints set at PC. */ |
4028 | ||
4029 | static void | |
714835d5 UW |
4030 | describe_other_breakpoints (CORE_ADDR pc, struct obj_section *section, |
4031 | int thread) | |
c906108c | 4032 | { |
52f0bd74 AC |
4033 | int others = 0; |
4034 | struct breakpoint *b; | |
c906108c SS |
4035 | |
4036 | ALL_BREAKPOINTS (b) | |
0d381245 | 4037 | others += breakpoint_has_pc (b, pc, section); |
c906108c SS |
4038 | if (others > 0) |
4039 | { | |
a3f17187 AC |
4040 | if (others == 1) |
4041 | printf_filtered (_("Note: breakpoint ")); | |
4042 | else /* if (others == ???) */ | |
4043 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 4044 | ALL_BREAKPOINTS (b) |
0d381245 VP |
4045 | if (breakpoint_has_pc (b, pc, section)) |
4046 | { | |
4047 | others--; | |
4048 | printf_filtered ("%d", b->number); | |
4049 | if (b->thread == -1 && thread != -1) | |
4050 | printf_filtered (" (all threads)"); | |
4051 | else if (b->thread != -1) | |
4052 | printf_filtered (" (thread %d)", b->thread); | |
4053 | printf_filtered ("%s%s ", | |
059fb39f PM |
4054 | ((b->enable_state == bp_disabled |
4055 | || b->enable_state == bp_call_disabled) | |
0d381245 VP |
4056 | ? " (disabled)" |
4057 | : b->enable_state == bp_permanent | |
4058 | ? " (permanent)" | |
4059 | : ""), | |
4060 | (others > 1) ? "," | |
4061 | : ((others == 1) ? " and" : "")); | |
4062 | } | |
a3f17187 | 4063 | printf_filtered (_("also set at pc ")); |
ed49a04f | 4064 | fputs_filtered (paddress (pc), gdb_stdout); |
c906108c SS |
4065 | printf_filtered (".\n"); |
4066 | } | |
4067 | } | |
4068 | \f | |
4069 | /* Set the default place to put a breakpoint | |
4070 | for the `break' command with no arguments. */ | |
4071 | ||
4072 | void | |
fba45db2 KB |
4073 | set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, |
4074 | int line) | |
c906108c SS |
4075 | { |
4076 | default_breakpoint_valid = valid; | |
4077 | default_breakpoint_address = addr; | |
4078 | default_breakpoint_symtab = symtab; | |
4079 | default_breakpoint_line = line; | |
4080 | } | |
4081 | ||
e4f237da KB |
4082 | /* Return true iff it is meaningful to use the address member of |
4083 | BPT. For some breakpoint types, the address member is irrelevant | |
4084 | and it makes no sense to attempt to compare it to other addresses | |
4085 | (or use it for any other purpose either). | |
4086 | ||
4087 | More specifically, each of the following breakpoint types will always | |
4088 | have a zero valued address and we don't want check_duplicates() to mark | |
4089 | breakpoints of any of these types to be a duplicate of an actual | |
4090 | breakpoint at address zero: | |
4091 | ||
4092 | bp_watchpoint | |
4093 | bp_hardware_watchpoint | |
4094 | bp_read_watchpoint | |
4095 | bp_access_watchpoint | |
fe798b75 | 4096 | bp_catchpoint */ |
e4f237da KB |
4097 | |
4098 | static int | |
4099 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
4100 | { | |
4101 | enum bptype type = bpt->type; | |
4102 | ||
4103 | return (type != bp_watchpoint | |
4104 | && type != bp_hardware_watchpoint | |
4105 | && type != bp_read_watchpoint | |
4106 | && type != bp_access_watchpoint | |
fe798b75 | 4107 | && type != bp_catchpoint); |
e4f237da KB |
4108 | } |
4109 | ||
9f60f21b | 4110 | /* Rescan breakpoints at the same address and section as BPT, |
c906108c | 4111 | marking the first one as "first" and any others as "duplicates". |
c2c6d25f | 4112 | This is so that the bpt instruction is only inserted once. |
9f60f21b JB |
4113 | If we have a permanent breakpoint at the same place as BPT, make |
4114 | that one the official one, and the rest as duplicates. */ | |
c906108c SS |
4115 | |
4116 | static void | |
714835d5 | 4117 | check_duplicates_for (CORE_ADDR address, struct obj_section *section) |
c906108c | 4118 | { |
075f6582 | 4119 | struct bp_location *b; |
52f0bd74 | 4120 | int count = 0; |
075f6582 | 4121 | struct bp_location *perm_bp = 0; |
c906108c | 4122 | |
075f6582 DJ |
4123 | ALL_BP_LOCATIONS (b) |
4124 | if (b->owner->enable_state != bp_disabled | |
075f6582 | 4125 | && b->owner->enable_state != bp_call_disabled |
0d381245 VP |
4126 | && b->enabled |
4127 | && !b->shlib_disabled | |
075f6582 DJ |
4128 | && b->address == address /* address / overlay match */ |
4129 | && (!overlay_debugging || b->section == section) | |
4130 | && breakpoint_address_is_meaningful (b->owner)) | |
c5aa993b | 4131 | { |
c2c6d25f | 4132 | /* Have we found a permanent breakpoint? */ |
075f6582 | 4133 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
4134 | { |
4135 | perm_bp = b; | |
4136 | break; | |
4137 | } | |
4138 | ||
c5aa993b | 4139 | count++; |
075f6582 | 4140 | b->duplicate = count > 1; |
c5aa993b | 4141 | } |
c2c6d25f JM |
4142 | |
4143 | /* If we found a permanent breakpoint at this address, go over the | |
aae64587 PA |
4144 | list again and declare all the other breakpoints there (except |
4145 | other permanent breakpoints) to be the duplicates. */ | |
c2c6d25f JM |
4146 | if (perm_bp) |
4147 | { | |
075f6582 | 4148 | perm_bp->duplicate = 0; |
c2c6d25f JM |
4149 | |
4150 | /* Permanent breakpoint should always be inserted. */ | |
075f6582 | 4151 | if (! perm_bp->inserted) |
8e65ff28 | 4152 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 AC |
4153 | _("allegedly permanent breakpoint is not " |
4154 | "actually inserted")); | |
c2c6d25f | 4155 | |
075f6582 | 4156 | ALL_BP_LOCATIONS (b) |
c2c6d25f JM |
4157 | if (b != perm_bp) |
4158 | { | |
aae64587 PA |
4159 | if (b->owner->enable_state != bp_permanent |
4160 | && b->owner->enable_state != bp_disabled | |
075f6582 | 4161 | && b->owner->enable_state != bp_call_disabled |
0d381245 | 4162 | && b->enabled && !b->shlib_disabled |
075f6582 DJ |
4163 | && b->address == address /* address / overlay match */ |
4164 | && (!overlay_debugging || b->section == section) | |
4165 | && breakpoint_address_is_meaningful (b->owner)) | |
4166 | { | |
4167 | if (b->inserted) | |
4168 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 AC |
4169 | _("another breakpoint was inserted on top of " |
4170 | "a permanent breakpoint")); | |
075f6582 DJ |
4171 | |
4172 | b->duplicate = 1; | |
4173 | } | |
c2c6d25f JM |
4174 | } |
4175 | } | |
c906108c SS |
4176 | } |
4177 | ||
0d381245 VP |
4178 | static void |
4179 | check_duplicates (struct breakpoint *bpt) | |
4180 | { | |
4181 | struct bp_location *bl = bpt->loc; | |
4182 | ||
4183 | if (! breakpoint_address_is_meaningful (bpt)) | |
4184 | return; | |
4185 | ||
4186 | for (; bl; bl = bl->next) | |
4187 | check_duplicates_for (bl->address, bl->section); | |
4188 | } | |
4189 | ||
76897487 KB |
4190 | static void |
4191 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
4192 | int bnum, int have_bnum) | |
4193 | { | |
4194 | char astr1[40]; | |
4195 | char astr2[40]; | |
4196 | ||
bb599908 PH |
4197 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
4198 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 4199 | if (have_bnum) |
8a3fe4f8 | 4200 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
4201 | bnum, astr1, astr2); |
4202 | else | |
8a3fe4f8 | 4203 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
4204 | } |
4205 | ||
4206 | /* Adjust a breakpoint's address to account for architectural constraints | |
4207 | on breakpoint placement. Return the adjusted address. Note: Very | |
4208 | few targets require this kind of adjustment. For most targets, | |
4209 | this function is simply the identity function. */ | |
4210 | ||
4211 | static CORE_ADDR | |
88f7da05 | 4212 | adjust_breakpoint_address (CORE_ADDR bpaddr, enum bptype bptype) |
76897487 KB |
4213 | { |
4214 | if (!gdbarch_adjust_breakpoint_address_p (current_gdbarch)) | |
4215 | { | |
4216 | /* Very few targets need any kind of breakpoint adjustment. */ | |
4217 | return bpaddr; | |
4218 | } | |
88f7da05 KB |
4219 | else if (bptype == bp_watchpoint |
4220 | || bptype == bp_hardware_watchpoint | |
4221 | || bptype == bp_read_watchpoint | |
4222 | || bptype == bp_access_watchpoint | |
fe798b75 | 4223 | || bptype == bp_catchpoint) |
88f7da05 KB |
4224 | { |
4225 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
4226 | have their addresses modified. */ | |
4227 | return bpaddr; | |
4228 | } | |
76897487 KB |
4229 | else |
4230 | { | |
4231 | CORE_ADDR adjusted_bpaddr; | |
4232 | ||
4233 | /* Some targets have architectural constraints on the placement | |
4234 | of breakpoint instructions. Obtain the adjusted address. */ | |
4235 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (current_gdbarch, | |
4236 | bpaddr); | |
4237 | ||
4238 | /* An adjusted breakpoint address can significantly alter | |
4239 | a user's expectations. Print a warning if an adjustment | |
4240 | is required. */ | |
4241 | if (adjusted_bpaddr != bpaddr) | |
4242 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
4243 | ||
4244 | return adjusted_bpaddr; | |
4245 | } | |
4246 | } | |
4247 | ||
7cc221ef DJ |
4248 | /* Allocate a struct bp_location. */ |
4249 | ||
26bb91f3 | 4250 | static struct bp_location * |
39d61571 | 4251 | allocate_bp_location (struct breakpoint *bpt) |
7cc221ef DJ |
4252 | { |
4253 | struct bp_location *loc, *loc_p; | |
4254 | ||
4255 | loc = xmalloc (sizeof (struct bp_location)); | |
4256 | memset (loc, 0, sizeof (*loc)); | |
4257 | ||
e049a4b5 | 4258 | loc->owner = bpt; |
511a6cd4 | 4259 | loc->cond = NULL; |
0d381245 VP |
4260 | loc->shlib_disabled = 0; |
4261 | loc->enabled = 1; | |
e049a4b5 | 4262 | |
39d61571 | 4263 | switch (bpt->type) |
e049a4b5 DJ |
4264 | { |
4265 | case bp_breakpoint: | |
1042e4c0 | 4266 | case bp_tracepoint: |
e049a4b5 DJ |
4267 | case bp_until: |
4268 | case bp_finish: | |
4269 | case bp_longjmp: | |
4270 | case bp_longjmp_resume: | |
4271 | case bp_step_resume: | |
e049a4b5 DJ |
4272 | case bp_watchpoint_scope: |
4273 | case bp_call_dummy: | |
4274 | case bp_shlib_event: | |
4275 | case bp_thread_event: | |
4276 | case bp_overlay_event: | |
e049a4b5 DJ |
4277 | loc->loc_type = bp_loc_software_breakpoint; |
4278 | break; | |
4279 | case bp_hardware_breakpoint: | |
4280 | loc->loc_type = bp_loc_hardware_breakpoint; | |
4281 | break; | |
4282 | case bp_hardware_watchpoint: | |
4283 | case bp_read_watchpoint: | |
4284 | case bp_access_watchpoint: | |
4285 | loc->loc_type = bp_loc_hardware_watchpoint; | |
4286 | break; | |
4287 | case bp_watchpoint: | |
ce78b96d | 4288 | case bp_catchpoint: |
e049a4b5 DJ |
4289 | loc->loc_type = bp_loc_other; |
4290 | break; | |
4291 | default: | |
e2e0b3e5 | 4292 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
4293 | } |
4294 | ||
7cc221ef DJ |
4295 | return loc; |
4296 | } | |
4297 | ||
fe3f5fa8 VP |
4298 | static void free_bp_location (struct bp_location *loc) |
4299 | { | |
4300 | if (loc->cond) | |
4301 | xfree (loc->cond); | |
74960c60 VP |
4302 | |
4303 | if (loc->function_name) | |
4304 | xfree (loc->function_name); | |
4305 | ||
fe3f5fa8 VP |
4306 | xfree (loc); |
4307 | } | |
4308 | ||
0d381245 VP |
4309 | /* Helper to set_raw_breakpoint below. Creates a breakpoint |
4310 | that has type BPTYPE and has no locations as yet. */ | |
c906108c | 4311 | |
c40e75cd | 4312 | static struct breakpoint * |
0d381245 | 4313 | set_raw_breakpoint_without_location (enum bptype bptype) |
c906108c | 4314 | { |
52f0bd74 | 4315 | struct breakpoint *b, *b1; |
c906108c SS |
4316 | |
4317 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4318 | memset (b, 0, sizeof (*b)); | |
2219d63c | 4319 | |
4d28f7a8 | 4320 | b->type = bptype; |
c906108c SS |
4321 | b->language = current_language->la_language; |
4322 | b->input_radix = input_radix; | |
4323 | b->thread = -1; | |
b5de0fa7 | 4324 | b->enable_state = bp_enabled; |
c906108c SS |
4325 | b->next = 0; |
4326 | b->silent = 0; | |
4327 | b->ignore_count = 0; | |
4328 | b->commands = NULL; | |
818dd999 | 4329 | b->frame_id = null_frame_id; |
3a3e9ee3 | 4330 | b->forked_inferior_pid = null_ptid; |
c906108c | 4331 | b->exec_pathname = NULL; |
3086aeae | 4332 | b->ops = NULL; |
0d381245 | 4333 | b->condition_not_parsed = 0; |
c906108c SS |
4334 | |
4335 | /* Add this breakpoint to the end of the chain | |
4336 | so that a list of breakpoints will come out in order | |
4337 | of increasing numbers. */ | |
4338 | ||
4339 | b1 = breakpoint_chain; | |
4340 | if (b1 == 0) | |
4341 | breakpoint_chain = b; | |
4342 | else | |
4343 | { | |
4344 | while (b1->next) | |
4345 | b1 = b1->next; | |
4346 | b1->next = b; | |
4347 | } | |
0d381245 VP |
4348 | return b; |
4349 | } | |
4350 | ||
4351 | /* Initialize loc->function_name. */ | |
4352 | static void | |
4353 | set_breakpoint_location_function (struct bp_location *loc) | |
4354 | { | |
4355 | if (loc->owner->type == bp_breakpoint | |
1042e4c0 SS |
4356 | || loc->owner->type == bp_hardware_breakpoint |
4357 | || loc->owner->type == bp_tracepoint) | |
0d381245 VP |
4358 | { |
4359 | find_pc_partial_function (loc->address, &(loc->function_name), | |
4360 | NULL, NULL); | |
4361 | if (loc->function_name) | |
4362 | loc->function_name = xstrdup (loc->function_name); | |
4363 | } | |
4364 | } | |
4365 | ||
4366 | /* set_raw_breakpoint is a low level routine for allocating and | |
4367 | partially initializing a breakpoint of type BPTYPE. The newly | |
4368 | created breakpoint's address, section, source file name, and line | |
4369 | number are provided by SAL. The newly created and partially | |
4370 | initialized breakpoint is added to the breakpoint chain and | |
4371 | is also returned as the value of this function. | |
4372 | ||
4373 | It is expected that the caller will complete the initialization of | |
4374 | the newly created breakpoint struct as well as output any status | |
4375 | information regarding the creation of a new breakpoint. In | |
4376 | particular, set_raw_breakpoint does NOT set the breakpoint | |
4377 | number! Care should be taken to not allow an error to occur | |
4378 | prior to completing the initialization of the breakpoint. If this | |
4379 | should happen, a bogus breakpoint will be left on the chain. */ | |
4380 | ||
4381 | struct breakpoint * | |
4382 | set_raw_breakpoint (struct symtab_and_line sal, enum bptype bptype) | |
4383 | { | |
4384 | struct breakpoint *b = set_raw_breakpoint_without_location (bptype); | |
4385 | CORE_ADDR adjusted_address; | |
4386 | ||
4387 | /* Adjust the breakpoint's address prior to allocating a location. | |
4388 | Once we call allocate_bp_location(), that mostly uninitialized | |
4389 | location will be placed on the location chain. Adjustment of the | |
8defab1a | 4390 | breakpoint may cause target_read_memory() to be called and we do |
0d381245 VP |
4391 | not want its scan of the location chain to find a breakpoint and |
4392 | location that's only been partially initialized. */ | |
39d61571 | 4393 | adjusted_address = adjust_breakpoint_address (sal.pc, b->type); |
0d381245 | 4394 | |
39d61571 | 4395 | b->loc = allocate_bp_location (b); |
0d381245 VP |
4396 | b->loc->requested_address = sal.pc; |
4397 | b->loc->address = adjusted_address; | |
4398 | ||
4399 | if (sal.symtab == NULL) | |
4400 | b->source_file = NULL; | |
4401 | else | |
1b36a34b | 4402 | b->source_file = xstrdup (sal.symtab->filename); |
0d381245 VP |
4403 | b->loc->section = sal.section; |
4404 | b->line_number = sal.line; | |
4405 | ||
4406 | set_breakpoint_location_function (b->loc); | |
c906108c | 4407 | |
c906108c SS |
4408 | breakpoints_changed (); |
4409 | ||
4410 | return b; | |
4411 | } | |
4412 | ||
c2c6d25f JM |
4413 | |
4414 | /* Note that the breakpoint object B describes a permanent breakpoint | |
4415 | instruction, hard-wired into the inferior's code. */ | |
4416 | void | |
4417 | make_breakpoint_permanent (struct breakpoint *b) | |
4418 | { | |
0d381245 | 4419 | struct bp_location *bl; |
b5de0fa7 | 4420 | b->enable_state = bp_permanent; |
c2c6d25f | 4421 | |
0d381245 VP |
4422 | /* By definition, permanent breakpoints are already present in the code. |
4423 | Mark all locations as inserted. For now, make_breakpoint_permanent | |
4424 | is called in just one place, so it's hard to say if it's reasonable | |
4425 | to have permanent breakpoint with multiple locations or not, | |
4426 | but it's easy to implmement. */ | |
4427 | for (bl = b->loc; bl; bl = bl->next) | |
4428 | bl->inserted = 1; | |
c2c6d25f JM |
4429 | } |
4430 | ||
c906108c | 4431 | static void |
fba45db2 | 4432 | create_longjmp_breakpoint (char *func_name) |
c906108c | 4433 | { |
1900040c | 4434 | struct minimal_symbol *m; |
c906108c | 4435 | |
059fb39f PM |
4436 | m = lookup_minimal_symbol_text (func_name, NULL); |
4437 | if (m == NULL) | |
611c83ae PA |
4438 | return; |
4439 | set_momentary_breakpoint_at_pc (SYMBOL_VALUE_ADDRESS (m), bp_longjmp); | |
b60e7edf | 4440 | update_global_location_list (1); |
c906108c SS |
4441 | } |
4442 | ||
53a5351d JM |
4443 | /* Call this routine when stepping and nexting to enable a breakpoint |
4444 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
4445 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
4446 | ||
4447 | void | |
611c83ae | 4448 | set_longjmp_breakpoint (void) |
c906108c | 4449 | { |
611c83ae | 4450 | if (gdbarch_get_longjmp_target_p (current_gdbarch)) |
c5aa993b | 4451 | { |
611c83ae PA |
4452 | create_longjmp_breakpoint ("longjmp"); |
4453 | create_longjmp_breakpoint ("_longjmp"); | |
4454 | create_longjmp_breakpoint ("siglongjmp"); | |
4455 | create_longjmp_breakpoint ("_siglongjmp"); | |
c5aa993b | 4456 | } |
c906108c SS |
4457 | } |
4458 | ||
611c83ae | 4459 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 4460 | void |
611c83ae | 4461 | delete_longjmp_breakpoint (int thread) |
c906108c | 4462 | { |
611c83ae | 4463 | struct breakpoint *b, *temp; |
c906108c | 4464 | |
611c83ae PA |
4465 | ALL_BREAKPOINTS_SAFE (b, temp) |
4466 | if (b->type == bp_longjmp) | |
4467 | { | |
4468 | if (b->thread == thread) | |
4469 | delete_breakpoint (b); | |
4470 | } | |
c906108c SS |
4471 | } |
4472 | ||
1900040c MS |
4473 | void |
4474 | enable_overlay_breakpoints (void) | |
4475 | { | |
52f0bd74 | 4476 | struct breakpoint *b; |
1900040c MS |
4477 | |
4478 | ALL_BREAKPOINTS (b) | |
4479 | if (b->type == bp_overlay_event) | |
4480 | { | |
4481 | b->enable_state = bp_enabled; | |
b60e7edf | 4482 | update_global_location_list (1); |
c02f5703 | 4483 | overlay_events_enabled = 1; |
1900040c MS |
4484 | } |
4485 | } | |
4486 | ||
4487 | void | |
4488 | disable_overlay_breakpoints (void) | |
4489 | { | |
52f0bd74 | 4490 | struct breakpoint *b; |
1900040c MS |
4491 | |
4492 | ALL_BREAKPOINTS (b) | |
4493 | if (b->type == bp_overlay_event) | |
4494 | { | |
4495 | b->enable_state = bp_disabled; | |
b60e7edf | 4496 | update_global_location_list (0); |
c02f5703 | 4497 | overlay_events_enabled = 0; |
1900040c MS |
4498 | } |
4499 | } | |
4500 | ||
c4093a6a | 4501 | struct breakpoint * |
fba45db2 | 4502 | create_thread_event_breakpoint (CORE_ADDR address) |
c4093a6a JM |
4503 | { |
4504 | struct breakpoint *b; | |
c4093a6a | 4505 | |
1900040c | 4506 | b = create_internal_breakpoint (address, bp_thread_event); |
c4093a6a | 4507 | |
b5de0fa7 | 4508 | b->enable_state = bp_enabled; |
c4093a6a | 4509 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
b435e160 | 4510 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); |
c4093a6a | 4511 | |
b60e7edf | 4512 | update_global_location_list_nothrow (1); |
74960c60 | 4513 | |
c4093a6a JM |
4514 | return b; |
4515 | } | |
4516 | ||
4517 | void | |
4518 | remove_thread_event_breakpoints (void) | |
4519 | { | |
4520 | struct breakpoint *b, *temp; | |
4521 | ||
4522 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4523 | if (b->type == bp_thread_event) | |
4524 | delete_breakpoint (b); | |
4525 | } | |
4526 | ||
0101ce28 JJ |
4527 | struct captured_parse_breakpoint_args |
4528 | { | |
4529 | char **arg_p; | |
4530 | struct symtabs_and_lines *sals_p; | |
4531 | char ***addr_string_p; | |
4532 | int *not_found_ptr; | |
4533 | }; | |
4534 | ||
4535 | struct lang_and_radix | |
4536 | { | |
4537 | enum language lang; | |
4538 | int radix; | |
4539 | }; | |
4540 | ||
0101ce28 | 4541 | |
cae688ec JJ |
4542 | void |
4543 | remove_solib_event_breakpoints (void) | |
4544 | { | |
4545 | struct breakpoint *b, *temp; | |
4546 | ||
4547 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4548 | if (b->type == bp_shlib_event) | |
4549 | delete_breakpoint (b); | |
4550 | } | |
4551 | ||
4552 | struct breakpoint * | |
4553 | create_solib_event_breakpoint (CORE_ADDR address) | |
4554 | { | |
4555 | struct breakpoint *b; | |
4556 | ||
4557 | b = create_internal_breakpoint (address, bp_shlib_event); | |
b60e7edf | 4558 | update_global_location_list_nothrow (1); |
cae688ec JJ |
4559 | return b; |
4560 | } | |
4561 | ||
4562 | /* Disable any breakpoints that are on code in shared libraries. Only | |
4563 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4564 | ||
4565 | void | |
cb851954 | 4566 | disable_breakpoints_in_shlibs (void) |
cae688ec | 4567 | { |
0d381245 | 4568 | struct bp_location *loc; |
cae688ec | 4569 | |
0d381245 | 4570 | ALL_BP_LOCATIONS (loc) |
cae688ec | 4571 | { |
0d381245 VP |
4572 | struct breakpoint *b = loc->owner; |
4573 | /* We apply the check to all breakpoints, including disabled | |
4574 | for those with loc->duplicate set. This is so that when breakpoint | |
4575 | becomes enabled, or the duplicate is removed, gdb will try to insert | |
4576 | all breakpoints. If we don't set shlib_disabled here, we'll try | |
4577 | to insert those breakpoints and fail. */ | |
1042e4c0 SS |
4578 | if (((b->type == bp_breakpoint) |
4579 | || (b->type == bp_hardware_breakpoint) | |
4580 | || (b->type == bp_tracepoint)) | |
0d381245 | 4581 | && !loc->shlib_disabled |
a77053c2 | 4582 | #ifdef PC_SOLIB |
0d381245 | 4583 | && PC_SOLIB (loc->address) |
a77053c2 | 4584 | #else |
f5c9a895 | 4585 | && solib_name_from_address (loc->address) |
a77053c2 MK |
4586 | #endif |
4587 | ) | |
0d381245 VP |
4588 | { |
4589 | loc->shlib_disabled = 1; | |
4590 | } | |
cae688ec JJ |
4591 | } |
4592 | } | |
4593 | ||
84acb35a JJ |
4594 | /* Disable any breakpoints that are in in an unloaded shared library. Only |
4595 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4596 | ||
75149521 | 4597 | static void |
84acb35a JJ |
4598 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
4599 | { | |
0d381245 | 4600 | struct bp_location *loc; |
84acb35a JJ |
4601 | int disabled_shlib_breaks = 0; |
4602 | ||
c86cf029 VP |
4603 | /* SunOS a.out shared libraries are always mapped, so do not |
4604 | disable breakpoints; they will only be reported as unloaded | |
4605 | through clear_solib when GDB discards its shared library | |
4606 | list. See clear_solib for more information. */ | |
4607 | if (exec_bfd != NULL | |
4608 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
4609 | return; | |
4610 | ||
0d381245 | 4611 | ALL_BP_LOCATIONS (loc) |
84acb35a | 4612 | { |
0d381245 VP |
4613 | struct breakpoint *b = loc->owner; |
4614 | if ((loc->loc_type == bp_loc_hardware_breakpoint | |
4615 | || loc->loc_type == bp_loc_software_breakpoint) | |
e2dd7057 PP |
4616 | && !loc->shlib_disabled |
4617 | && (b->type == bp_breakpoint || b->type == bp_hardware_breakpoint) | |
4618 | && solib_contains_address_p (solib, loc->address)) | |
84acb35a | 4619 | { |
e2dd7057 PP |
4620 | loc->shlib_disabled = 1; |
4621 | /* At this point, we cannot rely on remove_breakpoint | |
4622 | succeeding so we must mark the breakpoint as not inserted | |
4623 | to prevent future errors occurring in remove_breakpoints. */ | |
4624 | loc->inserted = 0; | |
4625 | if (!disabled_shlib_breaks) | |
4626 | { | |
4627 | target_terminal_ours_for_output (); | |
4628 | warning (_("Temporarily disabling breakpoints for unloaded shared library \"%s\""), | |
4629 | solib->so_name); | |
84acb35a | 4630 | } |
e2dd7057 | 4631 | disabled_shlib_breaks = 1; |
84acb35a JJ |
4632 | } |
4633 | } | |
84acb35a JJ |
4634 | } |
4635 | ||
ce78b96d JB |
4636 | /* FORK & VFORK catchpoints. */ |
4637 | ||
4638 | /* Implement the "insert" breakpoint_ops method for fork catchpoints. */ | |
4639 | ||
c906108c | 4640 | static void |
ce78b96d JB |
4641 | insert_catch_fork (struct breakpoint *b) |
4642 | { | |
4643 | target_insert_fork_catchpoint (PIDGET (inferior_ptid)); | |
4644 | } | |
4645 | ||
4646 | /* Implement the "remove" breakpoint_ops method for fork catchpoints. */ | |
4647 | ||
4648 | static int | |
4649 | remove_catch_fork (struct breakpoint *b) | |
4650 | { | |
4651 | return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); | |
4652 | } | |
4653 | ||
4654 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
4655 | catchpoints. */ | |
4656 | ||
4657 | static int | |
4658 | breakpoint_hit_catch_fork (struct breakpoint *b) | |
4659 | { | |
4660 | return inferior_has_forked (inferior_ptid, &b->forked_inferior_pid); | |
4661 | } | |
4662 | ||
4663 | /* Implement the "print_it" breakpoint_ops method for fork catchpoints. */ | |
4664 | ||
4665 | static enum print_stop_action | |
4666 | print_it_catch_fork (struct breakpoint *b) | |
4667 | { | |
4668 | annotate_catchpoint (b->number); | |
4669 | printf_filtered (_("\nCatchpoint %d (forked process %d), "), | |
4670 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
4671 | return PRINT_SRC_AND_LOC; | |
4672 | } | |
4673 | ||
4674 | /* Implement the "print_one" breakpoint_ops method for fork catchpoints. */ | |
4675 | ||
4676 | static void | |
4677 | print_one_catch_fork (struct breakpoint *b, CORE_ADDR *last_addr) | |
4678 | { | |
79a45b7d TT |
4679 | struct value_print_options opts; |
4680 | ||
4681 | get_user_print_options (&opts); | |
4682 | ||
ce78b96d JB |
4683 | /* Field 4, the address, is omitted (which makes the columns |
4684 | not line up too nicely with the headers, but the effect | |
4685 | is relatively readable). */ | |
79a45b7d | 4686 | if (opts.addressprint) |
ce78b96d JB |
4687 | ui_out_field_skip (uiout, "addr"); |
4688 | annotate_field (5); | |
4689 | ui_out_text (uiout, "fork"); | |
4690 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
4691 | { | |
4692 | ui_out_text (uiout, ", process "); | |
4693 | ui_out_field_int (uiout, "what", | |
4694 | ptid_get_pid (b->forked_inferior_pid)); | |
4695 | ui_out_spaces (uiout, 1); | |
4696 | } | |
4697 | } | |
4698 | ||
4699 | /* Implement the "print_mention" breakpoint_ops method for fork | |
4700 | catchpoints. */ | |
4701 | ||
4702 | static void | |
4703 | print_mention_catch_fork (struct breakpoint *b) | |
4704 | { | |
4705 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
4706 | } | |
4707 | ||
4708 | /* The breakpoint_ops structure to be used in fork catchpoints. */ | |
4709 | ||
4710 | static struct breakpoint_ops catch_fork_breakpoint_ops = | |
4711 | { | |
4712 | insert_catch_fork, | |
4713 | remove_catch_fork, | |
4714 | breakpoint_hit_catch_fork, | |
4715 | print_it_catch_fork, | |
4716 | print_one_catch_fork, | |
4717 | print_mention_catch_fork | |
4718 | }; | |
4719 | ||
4720 | /* Implement the "insert" breakpoint_ops method for vfork catchpoints. */ | |
4721 | ||
4722 | static void | |
4723 | insert_catch_vfork (struct breakpoint *b) | |
4724 | { | |
4725 | target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); | |
4726 | } | |
4727 | ||
4728 | /* Implement the "remove" breakpoint_ops method for vfork catchpoints. */ | |
4729 | ||
4730 | static int | |
4731 | remove_catch_vfork (struct breakpoint *b) | |
4732 | { | |
4733 | return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); | |
4734 | } | |
4735 | ||
4736 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
4737 | catchpoints. */ | |
4738 | ||
4739 | static int | |
4740 | breakpoint_hit_catch_vfork (struct breakpoint *b) | |
4741 | { | |
4742 | return inferior_has_vforked (inferior_ptid, &b->forked_inferior_pid); | |
4743 | } | |
4744 | ||
4745 | /* Implement the "print_it" breakpoint_ops method for vfork catchpoints. */ | |
4746 | ||
4747 | static enum print_stop_action | |
4748 | print_it_catch_vfork (struct breakpoint *b) | |
4749 | { | |
4750 | annotate_catchpoint (b->number); | |
4751 | printf_filtered (_("\nCatchpoint %d (vforked process %d), "), | |
4752 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
4753 | return PRINT_SRC_AND_LOC; | |
4754 | } | |
4755 | ||
4756 | /* Implement the "print_one" breakpoint_ops method for vfork catchpoints. */ | |
4757 | ||
4758 | static void | |
4759 | print_one_catch_vfork (struct breakpoint *b, CORE_ADDR *last_addr) | |
4760 | { | |
79a45b7d TT |
4761 | struct value_print_options opts; |
4762 | ||
4763 | get_user_print_options (&opts); | |
ce78b96d JB |
4764 | /* Field 4, the address, is omitted (which makes the columns |
4765 | not line up too nicely with the headers, but the effect | |
4766 | is relatively readable). */ | |
79a45b7d | 4767 | if (opts.addressprint) |
ce78b96d JB |
4768 | ui_out_field_skip (uiout, "addr"); |
4769 | annotate_field (5); | |
4770 | ui_out_text (uiout, "vfork"); | |
4771 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
4772 | { | |
4773 | ui_out_text (uiout, ", process "); | |
4774 | ui_out_field_int (uiout, "what", | |
4775 | ptid_get_pid (b->forked_inferior_pid)); | |
4776 | ui_out_spaces (uiout, 1); | |
4777 | } | |
4778 | } | |
4779 | ||
4780 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
4781 | catchpoints. */ | |
4782 | ||
4783 | static void | |
4784 | print_mention_catch_vfork (struct breakpoint *b) | |
4785 | { | |
4786 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
4787 | } | |
4788 | ||
4789 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ | |
4790 | ||
4791 | static struct breakpoint_ops catch_vfork_breakpoint_ops = | |
4792 | { | |
4793 | insert_catch_vfork, | |
4794 | remove_catch_vfork, | |
4795 | breakpoint_hit_catch_vfork, | |
4796 | print_it_catch_vfork, | |
4797 | print_one_catch_vfork, | |
4798 | print_mention_catch_vfork | |
4799 | }; | |
4800 | ||
4801 | /* Create a new breakpoint of the bp_catchpoint kind and return it. | |
4802 | ||
4803 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
4804 | If COND_STRING is not NULL, then store it in the breakpoint. | |
4805 | OPS, if not NULL, is the breakpoint_ops structure associated | |
4806 | to the catchpoint. */ | |
4807 | ||
4808 | static struct breakpoint * | |
4809 | create_catchpoint (int tempflag, char *cond_string, | |
4810 | struct breakpoint_ops *ops) | |
c906108c | 4811 | { |
c5aa993b JM |
4812 | struct symtab_and_line sal; |
4813 | struct breakpoint *b; | |
c5aa993b | 4814 | |
fe39c653 | 4815 | init_sal (&sal); |
c906108c SS |
4816 | sal.pc = 0; |
4817 | sal.symtab = NULL; | |
4818 | sal.line = 0; | |
c5aa993b | 4819 | |
ce78b96d | 4820 | b = set_raw_breakpoint (sal, bp_catchpoint); |
c906108c SS |
4821 | set_breakpoint_count (breakpoint_count + 1); |
4822 | b->number = breakpoint_count; | |
ce78b96d | 4823 | |
1b36a34b | 4824 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
ce78b96d | 4825 | b->thread = -1; |
c906108c | 4826 | b->addr_string = NULL; |
b5de0fa7 EZ |
4827 | b->enable_state = bp_enabled; |
4828 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
ce78b96d | 4829 | b->ops = ops; |
c5aa993b | 4830 | |
c906108c | 4831 | mention (b); |
ce78b96d | 4832 | update_global_location_list (1); |
c906108c | 4833 | |
ce78b96d | 4834 | return b; |
c906108c | 4835 | } |
c5aa993b | 4836 | |
9b70b993 | 4837 | static void |
ce78b96d JB |
4838 | create_fork_vfork_event_catchpoint (int tempflag, char *cond_string, |
4839 | struct breakpoint_ops *ops) | |
c906108c | 4840 | { |
ce78b96d JB |
4841 | struct breakpoint *b = create_catchpoint (tempflag, cond_string, ops); |
4842 | ||
4843 | /* FIXME: We should put this information in a breakpoint private data | |
4844 | area. */ | |
4845 | b->forked_inferior_pid = null_ptid; | |
c906108c SS |
4846 | } |
4847 | ||
fe798b75 JB |
4848 | /* Exec catchpoints. */ |
4849 | ||
9b70b993 | 4850 | static void |
fe798b75 | 4851 | insert_catch_exec (struct breakpoint *b) |
c906108c | 4852 | { |
fe798b75 JB |
4853 | target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
4854 | } | |
c906108c | 4855 | |
fe798b75 JB |
4856 | static int |
4857 | remove_catch_exec (struct breakpoint *b) | |
4858 | { | |
4859 | return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); | |
4860 | } | |
c906108c | 4861 | |
fe798b75 JB |
4862 | static int |
4863 | breakpoint_hit_catch_exec (struct breakpoint *b) | |
4864 | { | |
4865 | return inferior_has_execd (inferior_ptid, &b->exec_pathname); | |
4866 | } | |
c906108c | 4867 | |
fe798b75 JB |
4868 | static enum print_stop_action |
4869 | print_it_catch_exec (struct breakpoint *b) | |
4870 | { | |
4871 | annotate_catchpoint (b->number); | |
4872 | printf_filtered (_("\nCatchpoint %d (exec'd %s), "), b->number, | |
4873 | b->exec_pathname); | |
4874 | return PRINT_SRC_AND_LOC; | |
c906108c SS |
4875 | } |
4876 | ||
fe798b75 JB |
4877 | static void |
4878 | print_one_catch_exec (struct breakpoint *b, CORE_ADDR *last_addr) | |
4879 | { | |
4880 | struct value_print_options opts; | |
4881 | ||
4882 | get_user_print_options (&opts); | |
4883 | ||
4884 | /* Field 4, the address, is omitted (which makes the columns | |
4885 | not line up too nicely with the headers, but the effect | |
4886 | is relatively readable). */ | |
4887 | if (opts.addressprint) | |
4888 | ui_out_field_skip (uiout, "addr"); | |
4889 | annotate_field (5); | |
4890 | ui_out_text (uiout, "exec"); | |
4891 | if (b->exec_pathname != NULL) | |
4892 | { | |
4893 | ui_out_text (uiout, ", program \""); | |
4894 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
4895 | ui_out_text (uiout, "\" "); | |
4896 | } | |
4897 | } | |
4898 | ||
4899 | static void | |
4900 | print_mention_catch_exec (struct breakpoint *b) | |
4901 | { | |
4902 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
4903 | } | |
4904 | ||
4905 | static struct breakpoint_ops catch_exec_breakpoint_ops = | |
4906 | { | |
4907 | insert_catch_exec, | |
4908 | remove_catch_exec, | |
4909 | breakpoint_hit_catch_exec, | |
4910 | print_it_catch_exec, | |
4911 | print_one_catch_exec, | |
4912 | print_mention_catch_exec | |
4913 | }; | |
4914 | ||
c906108c | 4915 | static int |
fba45db2 | 4916 | hw_breakpoint_used_count (void) |
c906108c | 4917 | { |
52f0bd74 | 4918 | struct breakpoint *b; |
c906108c SS |
4919 | int i = 0; |
4920 | ||
4921 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4922 | { |
d6b74ac4 | 4923 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
c5aa993b JM |
4924 | i++; |
4925 | } | |
c906108c SS |
4926 | |
4927 | return i; | |
4928 | } | |
4929 | ||
4930 | static int | |
fba45db2 | 4931 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 4932 | { |
52f0bd74 | 4933 | struct breakpoint *b; |
c906108c SS |
4934 | int i = 0; |
4935 | ||
4936 | *other_type_used = 0; | |
4937 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4938 | { |
468d015d | 4939 | if (breakpoint_enabled (b)) |
c5aa993b JM |
4940 | { |
4941 | if (b->type == type) | |
4942 | i++; | |
059fb39f PM |
4943 | else if ((b->type == bp_hardware_watchpoint |
4944 | || b->type == bp_read_watchpoint | |
4945 | || b->type == bp_access_watchpoint)) | |
c5aa993b JM |
4946 | *other_type_used = 1; |
4947 | } | |
4948 | } | |
c906108c SS |
4949 | return i; |
4950 | } | |
4951 | ||
c906108c | 4952 | void |
fba45db2 | 4953 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 4954 | { |
c5aa993b | 4955 | struct breakpoint *b; |
c906108c SS |
4956 | |
4957 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4958 | { |
4959 | if (((b->type == bp_watchpoint) | |
4960 | || (b->type == bp_hardware_watchpoint) | |
4961 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 4962 | || (b->type == bp_access_watchpoint)) |
468d015d | 4963 | && breakpoint_enabled (b)) |
c5aa993b | 4964 | { |
b5de0fa7 | 4965 | b->enable_state = bp_call_disabled; |
b60e7edf | 4966 | update_global_location_list (0); |
c5aa993b JM |
4967 | } |
4968 | } | |
c906108c SS |
4969 | } |
4970 | ||
4971 | void | |
fba45db2 | 4972 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 4973 | { |
c5aa993b | 4974 | struct breakpoint *b; |
c906108c SS |
4975 | |
4976 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4977 | { |
4978 | if (((b->type == bp_watchpoint) | |
4979 | || (b->type == bp_hardware_watchpoint) | |
4980 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 4981 | || (b->type == bp_access_watchpoint)) |
b5de0fa7 | 4982 | && (b->enable_state == bp_call_disabled)) |
c5aa993b | 4983 | { |
b5de0fa7 | 4984 | b->enable_state = bp_enabled; |
b60e7edf | 4985 | update_global_location_list (1); |
c5aa993b JM |
4986 | } |
4987 | } | |
c906108c SS |
4988 | } |
4989 | ||
4990 | ||
4991 | /* Set a breakpoint that will evaporate an end of command | |
4992 | at address specified by SAL. | |
4993 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
4994 | ||
4995 | struct breakpoint * | |
818dd999 | 4996 | set_momentary_breakpoint (struct symtab_and_line sal, struct frame_id frame_id, |
fba45db2 | 4997 | enum bptype type) |
c906108c | 4998 | { |
52f0bd74 | 4999 | struct breakpoint *b; |
4d28f7a8 | 5000 | b = set_raw_breakpoint (sal, type); |
b5de0fa7 EZ |
5001 | b->enable_state = bp_enabled; |
5002 | b->disposition = disp_donttouch; | |
818dd999 | 5003 | b->frame_id = frame_id; |
c906108c SS |
5004 | |
5005 | /* If we're debugging a multi-threaded program, then we | |
5006 | want momentary breakpoints to be active in only a | |
5007 | single thread of control. */ | |
39f77062 KB |
5008 | if (in_thread_list (inferior_ptid)) |
5009 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 5010 | |
b60e7edf | 5011 | update_global_location_list_nothrow (1); |
74960c60 | 5012 | |
c906108c SS |
5013 | return b; |
5014 | } | |
611c83ae | 5015 | |
e58b0e63 PA |
5016 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
5017 | ORIG is NULL. */ | |
5018 | ||
5019 | struct breakpoint * | |
5020 | clone_momentary_breakpoint (struct breakpoint *orig) | |
5021 | { | |
5022 | struct breakpoint *copy; | |
5023 | ||
5024 | /* If there's nothing to clone, then return nothing. */ | |
5025 | if (orig == NULL) | |
5026 | return NULL; | |
5027 | ||
5028 | copy = set_raw_breakpoint_without_location (orig->type); | |
5029 | copy->loc = allocate_bp_location (copy); | |
5030 | set_breakpoint_location_function (copy->loc); | |
5031 | ||
5032 | copy->loc->requested_address = orig->loc->requested_address; | |
5033 | copy->loc->address = orig->loc->address; | |
5034 | copy->loc->section = orig->loc->section; | |
5035 | ||
5036 | if (orig->source_file == NULL) | |
5037 | copy->source_file = NULL; | |
5038 | else | |
5039 | copy->source_file = xstrdup (orig->source_file); | |
5040 | ||
5041 | copy->line_number = orig->line_number; | |
5042 | copy->frame_id = orig->frame_id; | |
5043 | copy->thread = orig->thread; | |
5044 | ||
5045 | copy->enable_state = bp_enabled; | |
5046 | copy->disposition = disp_donttouch; | |
5047 | copy->number = internal_breakpoint_number--; | |
5048 | ||
5049 | update_global_location_list_nothrow (0); | |
5050 | return copy; | |
5051 | } | |
5052 | ||
611c83ae PA |
5053 | struct breakpoint * |
5054 | set_momentary_breakpoint_at_pc (CORE_ADDR pc, enum bptype type) | |
5055 | { | |
5056 | struct symtab_and_line sal; | |
5057 | ||
5058 | sal = find_pc_line (pc, 0); | |
5059 | sal.pc = pc; | |
5060 | sal.section = find_pc_overlay (pc); | |
5061 | sal.explicit_pc = 1; | |
5062 | ||
5063 | return set_momentary_breakpoint (sal, null_frame_id, type); | |
5064 | } | |
c906108c | 5065 | \f |
c5aa993b | 5066 | |
c906108c SS |
5067 | /* Tell the user we have just set a breakpoint B. */ |
5068 | ||
5069 | static void | |
fba45db2 | 5070 | mention (struct breakpoint *b) |
c906108c SS |
5071 | { |
5072 | int say_where = 0; | |
fa8a61dc | 5073 | struct cleanup *ui_out_chain; |
79a45b7d TT |
5074 | struct value_print_options opts; |
5075 | ||
5076 | get_user_print_options (&opts); | |
8b93c638 | 5077 | |
9a4105ab AC |
5078 | /* FIXME: This is misplaced; mention() is called by things (like |
5079 | hitting a watchpoint) other than breakpoint creation. It should | |
5080 | be possible to clean this up and at the same time replace the | |
7f4b89d1 | 5081 | random calls to breakpoint_changed with this hook. */ |
383f836e | 5082 | observer_notify_breakpoint_created (b->number); |
c906108c | 5083 | |
3086aeae DJ |
5084 | if (b->ops != NULL && b->ops->print_mention != NULL) |
5085 | b->ops->print_mention (b); | |
5086 | else | |
5087 | switch (b->type) | |
5088 | { | |
5089 | case bp_none: | |
a3f17187 | 5090 | printf_filtered (_("(apparently deleted?) Eventpoint %d: "), b->number); |
3086aeae DJ |
5091 | break; |
5092 | case bp_watchpoint: | |
5093 | ui_out_text (uiout, "Watchpoint "); | |
5094 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
5095 | ui_out_field_int (uiout, "number", b->number); | |
5096 | ui_out_text (uiout, ": "); | |
fa8a61dc | 5097 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
5098 | do_cleanups (ui_out_chain); |
5099 | break; | |
5100 | case bp_hardware_watchpoint: | |
5101 | ui_out_text (uiout, "Hardware watchpoint "); | |
5102 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
5103 | ui_out_field_int (uiout, "number", b->number); | |
5104 | ui_out_text (uiout, ": "); | |
fa8a61dc | 5105 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
5106 | do_cleanups (ui_out_chain); |
5107 | break; | |
5108 | case bp_read_watchpoint: | |
5109 | ui_out_text (uiout, "Hardware read watchpoint "); | |
5110 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
5111 | ui_out_field_int (uiout, "number", b->number); | |
5112 | ui_out_text (uiout, ": "); | |
fa8a61dc | 5113 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
5114 | do_cleanups (ui_out_chain); |
5115 | break; | |
5116 | case bp_access_watchpoint: | |
5117 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
5118 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
5119 | ui_out_field_int (uiout, "number", b->number); | |
5120 | ui_out_text (uiout, ": "); | |
fa8a61dc | 5121 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
5122 | do_cleanups (ui_out_chain); |
5123 | break; | |
5124 | case bp_breakpoint: | |
5125 | if (ui_out_is_mi_like_p (uiout)) | |
5126 | { | |
5127 | say_where = 0; | |
5128 | break; | |
5129 | } | |
2cec12e5 AR |
5130 | if (b->disposition == disp_del) |
5131 | printf_filtered (_("Temporary breakpoint")); | |
5132 | else | |
5133 | printf_filtered (_("Breakpoint")); | |
5134 | printf_filtered (_(" %d"), b->number); | |
3086aeae DJ |
5135 | say_where = 1; |
5136 | break; | |
5137 | case bp_hardware_breakpoint: | |
5138 | if (ui_out_is_mi_like_p (uiout)) | |
5139 | { | |
5140 | say_where = 0; | |
5141 | break; | |
5142 | } | |
a3f17187 | 5143 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); |
3086aeae DJ |
5144 | say_where = 1; |
5145 | break; | |
1042e4c0 SS |
5146 | case bp_tracepoint: |
5147 | if (ui_out_is_mi_like_p (uiout)) | |
5148 | { | |
5149 | say_where = 0; | |
5150 | break; | |
5151 | } | |
5152 | printf_filtered (_("Tracepoint")); | |
5153 | printf_filtered (_(" %d"), b->number); | |
5154 | say_where = 1; | |
5155 | break; | |
3086aeae DJ |
5156 | |
5157 | case bp_until: | |
5158 | case bp_finish: | |
5159 | case bp_longjmp: | |
5160 | case bp_longjmp_resume: | |
5161 | case bp_step_resume: | |
3086aeae DJ |
5162 | case bp_call_dummy: |
5163 | case bp_watchpoint_scope: | |
5164 | case bp_shlib_event: | |
5165 | case bp_thread_event: | |
5166 | case bp_overlay_event: | |
5167 | break; | |
5168 | } | |
c906108c | 5169 | |
c906108c SS |
5170 | if (say_where) |
5171 | { | |
a3f17187 AC |
5172 | /* i18n: cagney/2005-02-11: Below needs to be merged into a |
5173 | single string. */ | |
0d381245 | 5174 | if (b->loc == NULL) |
c906108c | 5175 | { |
a3f17187 | 5176 | printf_filtered (_(" (%s) pending."), b->addr_string); |
0101ce28 JJ |
5177 | } |
5178 | else | |
5179 | { | |
79a45b7d | 5180 | if (opts.addressprint || b->source_file == NULL) |
0101ce28 JJ |
5181 | { |
5182 | printf_filtered (" at "); | |
ed49a04f | 5183 | fputs_filtered (paddress (b->loc->address), gdb_stdout); |
0101ce28 JJ |
5184 | } |
5185 | if (b->source_file) | |
5186 | printf_filtered (": file %s, line %d.", | |
5187 | b->source_file, b->line_number); | |
0d381245 VP |
5188 | |
5189 | if (b->loc->next) | |
5190 | { | |
5191 | struct bp_location *loc = b->loc; | |
5192 | int n = 0; | |
5193 | for (; loc; loc = loc->next) | |
5194 | ++n; | |
5195 | printf_filtered (" (%d locations)", n); | |
5196 | } | |
5197 | ||
c906108c | 5198 | } |
c906108c | 5199 | } |
9dc5e2a9 | 5200 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 5201 | return; |
c906108c SS |
5202 | printf_filtered ("\n"); |
5203 | } | |
c906108c | 5204 | \f |
c5aa993b | 5205 | |
0d381245 | 5206 | static struct bp_location * |
39d61571 | 5207 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
5208 | const struct symtab_and_line *sal) |
5209 | { | |
5210 | struct bp_location *loc, **tmp; | |
5211 | ||
39d61571 | 5212 | loc = allocate_bp_location (b); |
0d381245 VP |
5213 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
5214 | ; | |
5215 | *tmp = loc; | |
5216 | loc->requested_address = sal->pc; | |
39d61571 | 5217 | loc->address = adjust_breakpoint_address (loc->requested_address, b->type); |
0d381245 VP |
5218 | loc->section = sal->section; |
5219 | ||
5220 | set_breakpoint_location_function (loc); | |
5221 | return loc; | |
5222 | } | |
514f746b AR |
5223 | \f |
5224 | ||
5225 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
5226 | return 0 otherwise. */ | |
5227 | ||
5228 | static int | |
5229 | bp_loc_is_permanent (struct bp_location *loc) | |
5230 | { | |
5231 | int len; | |
5232 | CORE_ADDR addr; | |
5233 | const gdb_byte *brk; | |
5234 | gdb_byte *target_mem; | |
939c61fa JK |
5235 | struct cleanup *cleanup; |
5236 | int retval = 0; | |
514f746b AR |
5237 | |
5238 | gdb_assert (loc != NULL); | |
5239 | ||
5240 | addr = loc->address; | |
5241 | brk = gdbarch_breakpoint_from_pc (current_gdbarch, &addr, &len); | |
5242 | ||
939c61fa JK |
5243 | /* Software breakpoints unsupported? */ |
5244 | if (brk == NULL) | |
5245 | return 0; | |
5246 | ||
514f746b AR |
5247 | target_mem = alloca (len); |
5248 | ||
939c61fa JK |
5249 | /* Enable the automatic memory restoration from breakpoints while |
5250 | we read the memory. Otherwise we could say about our temporary | |
5251 | breakpoints they are permanent. */ | |
5252 | cleanup = make_show_memory_breakpoints_cleanup (0); | |
5253 | ||
514f746b AR |
5254 | if (target_read_memory (loc->address, target_mem, len) == 0 |
5255 | && memcmp (target_mem, brk, len) == 0) | |
939c61fa | 5256 | retval = 1; |
514f746b | 5257 | |
939c61fa JK |
5258 | do_cleanups (cleanup); |
5259 | ||
5260 | return retval; | |
514f746b AR |
5261 | } |
5262 | ||
5263 | ||
c3f6f71d | 5264 | |
018d34a4 VP |
5265 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
5266 | as textual description of the location, and COND_STRING | |
db107f19 | 5267 | as condition expression. */ |
018d34a4 VP |
5268 | |
5269 | static void | |
0d381245 | 5270 | create_breakpoint (struct symtabs_and_lines sals, char *addr_string, |
018d34a4 VP |
5271 | char *cond_string, |
5272 | enum bptype type, enum bpdisp disposition, | |
4a306c9a | 5273 | int thread, int task, int ignore_count, |
41447f92 | 5274 | struct breakpoint_ops *ops, int from_tty, int enabled) |
018d34a4 | 5275 | { |
0d381245 VP |
5276 | struct breakpoint *b = NULL; |
5277 | int i; | |
018d34a4 VP |
5278 | |
5279 | if (type == bp_hardware_breakpoint) | |
5280 | { | |
5281 | int i = hw_breakpoint_used_count (); | |
5282 | int target_resources_ok = | |
d92524f1 | 5283 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
018d34a4 VP |
5284 | i + 1, 0); |
5285 | if (target_resources_ok == 0) | |
5286 | error (_("No hardware breakpoint support in the target.")); | |
5287 | else if (target_resources_ok < 0) | |
5288 | error (_("Hardware breakpoints used exceeds limit.")); | |
5289 | } | |
5290 | ||
0d381245 VP |
5291 | for (i = 0; i < sals.nelts; ++i) |
5292 | { | |
5293 | struct symtab_and_line sal = sals.sals[i]; | |
5294 | struct bp_location *loc; | |
5295 | ||
5296 | if (from_tty) | |
5297 | describe_other_breakpoints (sal.pc, sal.section, thread); | |
5298 | ||
5299 | if (i == 0) | |
5300 | { | |
5301 | b = set_raw_breakpoint (sal, type); | |
5302 | set_breakpoint_count (breakpoint_count + 1); | |
5303 | b->number = breakpoint_count; | |
5304 | b->thread = thread; | |
4a306c9a | 5305 | b->task = task; |
018d34a4 | 5306 | |
0d381245 VP |
5307 | b->cond_string = cond_string; |
5308 | b->ignore_count = ignore_count; | |
41447f92 | 5309 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 5310 | b->disposition = disposition; |
018d34a4 | 5311 | |
0d381245 VP |
5312 | loc = b->loc; |
5313 | } | |
5314 | else | |
018d34a4 | 5315 | { |
39d61571 | 5316 | loc = add_location_to_breakpoint (b, &sal); |
0d381245 VP |
5317 | } |
5318 | ||
514f746b AR |
5319 | if (bp_loc_is_permanent (loc)) |
5320 | make_breakpoint_permanent (b); | |
5321 | ||
0d381245 VP |
5322 | if (b->cond_string) |
5323 | { | |
5324 | char *arg = b->cond_string; | |
d32a6982 | 5325 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); |
0d381245 | 5326 | if (*arg) |
db107f19 | 5327 | error (_("Garbage %s follows condition"), arg); |
018d34a4 | 5328 | } |
0d381245 | 5329 | } |
018d34a4 VP |
5330 | |
5331 | if (addr_string) | |
5332 | b->addr_string = addr_string; | |
5333 | else | |
5334 | /* addr_string has to be used or breakpoint_re_set will delete | |
5335 | me. */ | |
5336 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); | |
5337 | ||
604133b5 | 5338 | b->ops = ops; |
018d34a4 VP |
5339 | mention (b); |
5340 | } | |
5341 | ||
ed0616c6 VP |
5342 | /* Remove element at INDEX_TO_REMOVE from SAL, shifting other |
5343 | elements to fill the void space. */ | |
2c0b251b PA |
5344 | static void |
5345 | remove_sal (struct symtabs_and_lines *sal, int index_to_remove) | |
ed0616c6 VP |
5346 | { |
5347 | int i = index_to_remove+1; | |
5348 | int last_index = sal->nelts-1; | |
5349 | ||
5350 | for (;i <= last_index; ++i) | |
5351 | sal->sals[i-1] = sal->sals[i]; | |
5352 | ||
5353 | --(sal->nelts); | |
5354 | } | |
5355 | ||
5356 | /* If appropriate, obtains all sals that correspond | |
5357 | to the same file and line as SAL. This is done | |
5358 | only if SAL does not have explicit PC and has | |
5359 | line and file information. If we got just a single | |
5360 | expanded sal, return the original. | |
5361 | ||
5362 | Otherwise, if SAL.explicit_line is not set, filter out | |
5363 | all sals for which the name of enclosing function | |
5364 | is different from SAL. This makes sure that if we have | |
5365 | breakpoint originally set in template instantiation, say | |
5366 | foo<int>(), we won't expand SAL to locations at the same | |
5367 | line in all existing instantiations of 'foo'. | |
5368 | ||
5369 | */ | |
2c0b251b | 5370 | static struct symtabs_and_lines |
ed0616c6 VP |
5371 | expand_line_sal_maybe (struct symtab_and_line sal) |
5372 | { | |
5373 | struct symtabs_and_lines expanded; | |
5374 | CORE_ADDR original_pc = sal.pc; | |
5375 | char *original_function = NULL; | |
5376 | int found; | |
5377 | int i; | |
5378 | ||
5379 | /* If we have explicit pc, don't expand. | |
5380 | If we have no line number, we can't expand. */ | |
5381 | if (sal.explicit_pc || sal.line == 0 || sal.symtab == NULL) | |
5382 | { | |
5383 | expanded.nelts = 1; | |
5384 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5385 | expanded.sals[0] = sal; | |
5386 | return expanded; | |
5387 | } | |
5388 | ||
5389 | sal.pc = 0; | |
5390 | find_pc_partial_function (original_pc, &original_function, NULL, NULL); | |
5391 | ||
5392 | expanded = expand_line_sal (sal); | |
5393 | if (expanded.nelts == 1) | |
5394 | { | |
5395 | /* We had one sal, we got one sal. Without futher | |
5396 | processing, just return the original sal. */ | |
5397 | xfree (expanded.sals); | |
5398 | expanded.nelts = 1; | |
5399 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5400 | sal.pc = original_pc; | |
5401 | expanded.sals[0] = sal; | |
5402 | return expanded; | |
5403 | } | |
5404 | ||
5405 | if (!sal.explicit_line) | |
5406 | { | |
5407 | CORE_ADDR func_addr, func_end; | |
5408 | for (i = 0; i < expanded.nelts; ++i) | |
5409 | { | |
5410 | CORE_ADDR pc = expanded.sals[i].pc; | |
5411 | char *this_function; | |
5412 | if (find_pc_partial_function (pc, &this_function, | |
5413 | &func_addr, &func_end)) | |
5414 | { | |
059fb39f PM |
5415 | if (this_function |
5416 | && strcmp (this_function, original_function) != 0) | |
ed0616c6 VP |
5417 | { |
5418 | remove_sal (&expanded, i); | |
5419 | --i; | |
5420 | } | |
5421 | else if (func_addr == pc) | |
5422 | { | |
5423 | /* We're at beginning of a function, and should | |
5424 | skip prologue. */ | |
5425 | struct symbol *sym = find_pc_function (pc); | |
5426 | if (sym) | |
5427 | expanded.sals[i] = find_function_start_sal (sym, 1); | |
5428 | else | |
d80b854b UW |
5429 | { |
5430 | /* Since find_pc_partial_function returned true, | |
5431 | we should really always find the section here. */ | |
5432 | struct obj_section *section = find_pc_section (pc); | |
5433 | if (section) | |
5434 | { | |
5435 | struct gdbarch *gdbarch | |
5436 | = get_objfile_arch (section->objfile); | |
5437 | expanded.sals[i].pc | |
5438 | = gdbarch_skip_prologue (gdbarch, pc); | |
5439 | } | |
5440 | } | |
ed0616c6 VP |
5441 | } |
5442 | } | |
5443 | } | |
5444 | } | |
3daf8fe5 JG |
5445 | else |
5446 | { | |
5447 | for (i = 0; i < expanded.nelts; ++i) | |
5448 | { | |
5449 | /* If this SAL corresponds to a breakpoint inserted using a | |
5450 | line number, then skip the function prologue if necessary. */ | |
5451 | skip_prologue_sal (&expanded.sals[i]); | |
5452 | } | |
5453 | } | |
ed0616c6 VP |
5454 | |
5455 | ||
5456 | if (expanded.nelts <= 1) | |
5457 | { | |
5458 | /* This is un ugly workaround. If we get zero | |
5459 | expanded sals then something is really wrong. | |
5460 | Fix that by returnign the original sal. */ | |
5461 | xfree (expanded.sals); | |
5462 | expanded.nelts = 1; | |
5463 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5464 | sal.pc = original_pc; | |
5465 | expanded.sals[0] = sal; | |
5466 | return expanded; | |
5467 | } | |
5468 | ||
5469 | if (original_pc) | |
5470 | { | |
5471 | found = 0; | |
5472 | for (i = 0; i < expanded.nelts; ++i) | |
5473 | if (expanded.sals[i].pc == original_pc) | |
5474 | { | |
5475 | found = 1; | |
5476 | break; | |
5477 | } | |
5478 | gdb_assert (found); | |
5479 | } | |
5480 | ||
5481 | return expanded; | |
5482 | } | |
5483 | ||
018d34a4 VP |
5484 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
5485 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
5486 | value. COND_STRING, if not NULL, specified the condition to be | |
5487 | used for all breakpoints. Essentially the only case where | |
5488 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
5489 | function. In that case, it's still not possible to specify | |
5490 | separate conditions for different overloaded functions, so | |
5491 | we take just a single condition string. | |
5492 | ||
c3f6f71d | 5493 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 5494 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
5495 | array contents). If the function fails (error() is called), the |
5496 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
5497 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
5498 | |
5499 | static void | |
c3f6f71d | 5500 | create_breakpoints (struct symtabs_and_lines sals, char **addr_string, |
018d34a4 | 5501 | char *cond_string, |
c3f6f71d | 5502 | enum bptype type, enum bpdisp disposition, |
4a306c9a | 5503 | int thread, int task, int ignore_count, |
41447f92 VP |
5504 | struct breakpoint_ops *ops, int from_tty, |
5505 | int enabled) | |
c906108c | 5506 | { |
018d34a4 VP |
5507 | int i; |
5508 | for (i = 0; i < sals.nelts; ++i) | |
c3f6f71d | 5509 | { |
ed0616c6 VP |
5510 | struct symtabs_and_lines expanded = |
5511 | expand_line_sal_maybe (sals.sals[i]); | |
0d381245 | 5512 | |
ed0616c6 | 5513 | create_breakpoint (expanded, addr_string[i], |
018d34a4 | 5514 | cond_string, type, disposition, |
4a306c9a | 5515 | thread, task, ignore_count, ops, from_tty, enabled); |
c3f6f71d | 5516 | } |
c3f6f71d | 5517 | } |
c906108c | 5518 | |
c3f6f71d JM |
5519 | /* Parse ARG which is assumed to be a SAL specification possibly |
5520 | followed by conditionals. On return, SALS contains an array of SAL | |
5521 | addresses found. ADDR_STRING contains a vector of (canonical) | |
5522 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 5523 | |
b9362cc7 | 5524 | static void |
c3f6f71d JM |
5525 | parse_breakpoint_sals (char **address, |
5526 | struct symtabs_and_lines *sals, | |
0101ce28 JJ |
5527 | char ***addr_string, |
5528 | int *not_found_ptr) | |
c3f6f71d JM |
5529 | { |
5530 | char *addr_start = *address; | |
5531 | *addr_string = NULL; | |
5532 | /* If no arg given, or if first arg is 'if ', use the default | |
5533 | breakpoint. */ | |
5534 | if ((*address) == NULL | |
5535 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
5536 | { |
5537 | if (default_breakpoint_valid) | |
5538 | { | |
c3f6f71d | 5539 | struct symtab_and_line sal; |
fe39c653 | 5540 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 5541 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
5542 | xmalloc (sizeof (struct symtab_and_line)); |
5543 | sal.pc = default_breakpoint_address; | |
5544 | sal.line = default_breakpoint_line; | |
5545 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 5546 | sal.section = find_pc_overlay (sal.pc); |
00903456 JK |
5547 | |
5548 | /* "break" without arguments is equivalent to "break *PC" where PC is | |
5549 | the default_breakpoint_address. So make sure to set | |
5550 | sal.explicit_pc to prevent GDB from trying to expand the list of | |
5551 | sals to include all other instances with the same symtab and line. | |
5552 | */ | |
5553 | sal.explicit_pc = 1; | |
5554 | ||
c3f6f71d JM |
5555 | sals->sals[0] = sal; |
5556 | sals->nelts = 1; | |
c906108c SS |
5557 | } |
5558 | else | |
8a3fe4f8 | 5559 | error (_("No default breakpoint address now.")); |
c906108c SS |
5560 | } |
5561 | else | |
5562 | { | |
c906108c | 5563 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
5564 | current_source_symtab (which is decode_line_1's default). This |
5565 | should produce the results we want almost all of the time while | |
1aeae86e AF |
5566 | leaving default_breakpoint_* alone. |
5567 | ObjC: However, don't match an Objective-C method name which | |
5568 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 5569 | |
c214a6fd | 5570 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 5571 | |
c906108c | 5572 | if (default_breakpoint_valid |
0378c332 | 5573 | && (!cursal.symtab |
1aeae86e AF |
5574 | || ((strchr ("+-", (*address)[0]) != NULL) |
5575 | && ((*address)[1] != '[')))) | |
c3f6f71d | 5576 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
0101ce28 JJ |
5577 | default_breakpoint_line, addr_string, |
5578 | not_found_ptr); | |
c906108c | 5579 | else |
0101ce28 JJ |
5580 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
5581 | addr_string, not_found_ptr); | |
c906108c | 5582 | } |
c3f6f71d JM |
5583 | /* For any SAL that didn't have a canonical string, fill one in. */ |
5584 | if (sals->nelts > 0 && *addr_string == NULL) | |
5585 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
5586 | if (addr_start != (*address)) | |
c906108c | 5587 | { |
c3f6f71d JM |
5588 | int i; |
5589 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 5590 | { |
c3f6f71d JM |
5591 | /* Add the string if not present. */ |
5592 | if ((*addr_string)[i] == NULL) | |
5593 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
5594 | } |
5595 | } | |
c3f6f71d | 5596 | } |
c906108c | 5597 | |
c906108c | 5598 | |
c3f6f71d JM |
5599 | /* Convert each SAL into a real PC. Verify that the PC can be |
5600 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 5601 | |
b9362cc7 | 5602 | static void |
c3f6f71d JM |
5603 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, |
5604 | char *address) | |
5605 | { | |
5606 | int i; | |
5607 | for (i = 0; i < sals->nelts; i++) | |
ee53e872 | 5608 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
5609 | } |
5610 | ||
05ff989b | 5611 | static void |
0101ce28 JJ |
5612 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) |
5613 | { | |
5614 | struct captured_parse_breakpoint_args *args = data; | |
5615 | ||
5616 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p, | |
5617 | args->not_found_ptr); | |
0101ce28 JJ |
5618 | } |
5619 | ||
018d34a4 VP |
5620 | /* Given TOK, a string specification of condition and thread, as |
5621 | accepted by the 'break' command, extract the condition | |
5622 | string and thread number and set *COND_STRING and *THREAD. | |
5623 | PC identifies the context at which the condition should be parsed. | |
5624 | If no condition is found, *COND_STRING is set to NULL. | |
5625 | If no thread is found, *THREAD is set to -1. */ | |
5626 | static void | |
5627 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
4a306c9a | 5628 | char **cond_string, int *thread, int *task) |
018d34a4 VP |
5629 | { |
5630 | *cond_string = NULL; | |
5631 | *thread = -1; | |
5632 | while (tok && *tok) | |
5633 | { | |
5634 | char *end_tok; | |
5635 | int toklen; | |
5636 | char *cond_start = NULL; | |
5637 | char *cond_end = NULL; | |
5638 | while (*tok == ' ' || *tok == '\t') | |
5639 | tok++; | |
5640 | ||
5641 | end_tok = tok; | |
5642 | ||
5643 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5644 | end_tok++; | |
5645 | ||
5646 | toklen = end_tok - tok; | |
5647 | ||
5648 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5649 | { | |
f7545552 TT |
5650 | struct expression *expr; |
5651 | ||
018d34a4 | 5652 | tok = cond_start = end_tok + 1; |
f7545552 TT |
5653 | expr = parse_exp_1 (&tok, block_for_pc (pc), 0); |
5654 | xfree (expr); | |
018d34a4 VP |
5655 | cond_end = tok; |
5656 | *cond_string = savestring (cond_start, | |
5657 | cond_end - cond_start); | |
5658 | } | |
5659 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5660 | { | |
5661 | char *tmptok; | |
5662 | ||
5663 | tok = end_tok + 1; | |
5664 | tmptok = tok; | |
5665 | *thread = strtol (tok, &tok, 0); | |
5666 | if (tok == tmptok) | |
5667 | error (_("Junk after thread keyword.")); | |
5668 | if (!valid_thread_id (*thread)) | |
5669 | error (_("Unknown thread %d."), *thread); | |
5670 | } | |
4a306c9a JB |
5671 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
5672 | { | |
5673 | char *tmptok; | |
5674 | ||
5675 | tok = end_tok + 1; | |
5676 | tmptok = tok; | |
5677 | *task = strtol (tok, &tok, 0); | |
5678 | if (tok == tmptok) | |
5679 | error (_("Junk after task keyword.")); | |
5680 | if (!valid_task_id (*task)) | |
5681 | error (_("Unknown task %d\n"), *task); | |
5682 | } | |
018d34a4 VP |
5683 | else |
5684 | error (_("Junk at end of arguments.")); | |
5685 | } | |
5686 | } | |
5687 | ||
72b2ff0e VP |
5688 | /* Set a breakpoint. This function is shared between |
5689 | CLI and MI functions for setting a breakpoint. | |
5690 | This function has two major modes of operations, | |
5691 | selected by the PARSE_CONDITION_AND_THREAD parameter. | |
5692 | If non-zero, the function will parse arg, extracting | |
5693 | breakpoint location, address and thread. Otherwise, | |
5694 | ARG is just the location of breakpoint, with condition | |
5695 | and thread specified by the COND_STRING and THREAD | |
5696 | parameters. */ | |
0101ce28 | 5697 | |
98deb0da | 5698 | static void |
72b2ff0e | 5699 | break_command_really (char *arg, char *cond_string, int thread, |
60c46647 | 5700 | int parse_condition_and_thread, |
1042e4c0 | 5701 | int tempflag, int hardwareflag, int traceflag, |
60c46647 VP |
5702 | int ignore_count, |
5703 | enum auto_boolean pending_break_support, | |
604133b5 | 5704 | struct breakpoint_ops *ops, |
41447f92 VP |
5705 | int from_tty, |
5706 | int enabled) | |
c3f6f71d | 5707 | { |
71fff37b | 5708 | struct gdb_exception e; |
c3f6f71d | 5709 | struct symtabs_and_lines sals; |
0101ce28 | 5710 | struct symtab_and_line pending_sal; |
0101ce28 JJ |
5711 | char *copy_arg; |
5712 | char *err_msg; | |
c3f6f71d JM |
5713 | char *addr_start = arg; |
5714 | char **addr_string; | |
5715 | struct cleanup *old_chain; | |
80c99de1 | 5716 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 5717 | struct captured_parse_breakpoint_args parse_args; |
05ff989b | 5718 | int i; |
0101ce28 | 5719 | int pending = 0; |
0101ce28 | 5720 | int not_found = 0; |
1042e4c0 | 5721 | enum bptype type_wanted; |
4a306c9a | 5722 | int task = 0; |
c3f6f71d | 5723 | |
c3f6f71d JM |
5724 | sals.sals = NULL; |
5725 | sals.nelts = 0; | |
5726 | addr_string = NULL; | |
c3f6f71d | 5727 | |
0101ce28 JJ |
5728 | parse_args.arg_p = &arg; |
5729 | parse_args.sals_p = &sals; | |
5730 | parse_args.addr_string_p = &addr_string; | |
5731 | parse_args.not_found_ptr = ¬_found; | |
5732 | ||
05ff989b AC |
5733 | e = catch_exception (uiout, do_captured_parse_breakpoint, |
5734 | &parse_args, RETURN_MASK_ALL); | |
0101ce28 JJ |
5735 | |
5736 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 5737 | switch (e.reason) |
0101ce28 | 5738 | { |
05ff989b | 5739 | case RETURN_QUIT: |
98deb0da | 5740 | throw_exception (e); |
05ff989b AC |
5741 | case RETURN_ERROR: |
5742 | switch (e.error) | |
0101ce28 | 5743 | { |
05ff989b | 5744 | case NOT_FOUND_ERROR: |
0101ce28 | 5745 | |
05ff989b AC |
5746 | /* If pending breakpoint support is turned off, throw |
5747 | error. */ | |
fa8d40ab JJ |
5748 | |
5749 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
5750 | throw_exception (e); |
5751 | ||
5752 | exception_print (gdb_stderr, e); | |
fa8d40ab | 5753 | |
05ff989b AC |
5754 | /* If pending breakpoint support is auto query and the user |
5755 | selects no, then simply return the error code. */ | |
059fb39f PM |
5756 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
5757 | && !nquery ("Make breakpoint pending on future shared library load? ")) | |
98deb0da | 5758 | return; |
fa8d40ab | 5759 | |
05ff989b AC |
5760 | /* At this point, either the user was queried about setting |
5761 | a pending breakpoint and selected yes, or pending | |
5762 | breakpoint behavior is on and thus a pending breakpoint | |
5763 | is defaulted on behalf of the user. */ | |
0101ce28 JJ |
5764 | copy_arg = xstrdup (addr_start); |
5765 | addr_string = ©_arg; | |
5766 | sals.nelts = 1; | |
5767 | sals.sals = &pending_sal; | |
5768 | pending_sal.pc = 0; | |
5769 | pending = 1; | |
05ff989b AC |
5770 | break; |
5771 | default: | |
98deb0da | 5772 | throw_exception (e); |
0101ce28 | 5773 | } |
05ff989b AC |
5774 | default: |
5775 | if (!sals.nelts) | |
98deb0da | 5776 | return; |
0101ce28 | 5777 | } |
c3f6f71d JM |
5778 | |
5779 | /* Create a chain of things that always need to be cleaned up. */ | |
5780 | old_chain = make_cleanup (null_cleanup, 0); | |
5781 | ||
0101ce28 JJ |
5782 | if (!pending) |
5783 | { | |
5784 | /* Make sure that all storage allocated to SALS gets freed. */ | |
5785 | make_cleanup (xfree, sals.sals); | |
5786 | ||
5787 | /* Cleanup the addr_string array but not its contents. */ | |
5788 | make_cleanup (xfree, addr_string); | |
5789 | } | |
c3f6f71d | 5790 | |
c3f6f71d JM |
5791 | /* ----------------------------- SNIP ----------------------------- |
5792 | Anything added to the cleanup chain beyond this point is assumed | |
5793 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
5794 | then the memory is not reclaimed. */ |
5795 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d JM |
5796 | |
5797 | /* Mark the contents of the addr_string for cleanup. These go on | |
80c99de1 | 5798 | the bkpt_chain and only occur if the breakpoint create fails. */ |
c3f6f71d JM |
5799 | for (i = 0; i < sals.nelts; i++) |
5800 | { | |
5801 | if (addr_string[i] != NULL) | |
b8c9b27d | 5802 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
5803 | } |
5804 | ||
5805 | /* Resolve all line numbers to PC's and verify that the addresses | |
5806 | are ok for the target. */ | |
0101ce28 JJ |
5807 | if (!pending) |
5808 | breakpoint_sals_to_pc (&sals, addr_start); | |
c3f6f71d | 5809 | |
1042e4c0 SS |
5810 | type_wanted = (traceflag |
5811 | ? bp_tracepoint | |
5812 | : (hardwareflag ? bp_hardware_breakpoint : bp_breakpoint)); | |
5813 | ||
c3f6f71d JM |
5814 | /* Verify that condition can be parsed, before setting any |
5815 | breakpoints. Allocate a separate condition expression for each | |
5816 | breakpoint. */ | |
0101ce28 | 5817 | if (!pending) |
c3f6f71d | 5818 | { |
2f069f6f | 5819 | if (parse_condition_and_thread) |
72b2ff0e VP |
5820 | { |
5821 | /* Here we only parse 'arg' to separate condition | |
5822 | from thread number, so parsing in context of first | |
5823 | sal is OK. When setting the breakpoint we'll | |
5824 | re-parse it in context of each sal. */ | |
5825 | cond_string = NULL; | |
5826 | thread = -1; | |
4a306c9a JB |
5827 | find_condition_and_thread (arg, sals.sals[0].pc, &cond_string, |
5828 | &thread, &task); | |
72b2ff0e VP |
5829 | if (cond_string) |
5830 | make_cleanup (xfree, cond_string); | |
5831 | } | |
2f069f6f | 5832 | else |
72b2ff0e VP |
5833 | { |
5834 | /* Create a private copy of condition string. */ | |
5835 | if (cond_string) | |
5836 | { | |
5837 | cond_string = xstrdup (cond_string); | |
5838 | make_cleanup (xfree, cond_string); | |
5839 | } | |
5840 | } | |
1042e4c0 | 5841 | create_breakpoints (sals, addr_string, cond_string, type_wanted, |
0101ce28 | 5842 | tempflag ? disp_del : disp_donttouch, |
4a306c9a | 5843 | thread, task, ignore_count, ops, from_tty, enabled); |
c906108c | 5844 | } |
0101ce28 JJ |
5845 | else |
5846 | { | |
fe3f5fa8 | 5847 | struct symtab_and_line sal = {0}; |
0101ce28 JJ |
5848 | struct breakpoint *b; |
5849 | ||
0101ce28 JJ |
5850 | make_cleanup (xfree, copy_arg); |
5851 | ||
1042e4c0 | 5852 | b = set_raw_breakpoint_without_location (type_wanted); |
0101ce28 JJ |
5853 | set_breakpoint_count (breakpoint_count + 1); |
5854 | b->number = breakpoint_count; | |
72b2ff0e | 5855 | b->thread = -1; |
018d34a4 | 5856 | b->addr_string = addr_string[0]; |
72b2ff0e | 5857 | b->cond_string = NULL; |
0101ce28 | 5858 | b->ignore_count = ignore_count; |
0101ce28 | 5859 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 5860 | b->condition_not_parsed = 1; |
604133b5 | 5861 | b->ops = ops; |
41447f92 | 5862 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
74960c60 | 5863 | |
0101ce28 JJ |
5864 | mention (b); |
5865 | } | |
5866 | ||
c3f6f71d | 5867 | if (sals.nelts > 1) |
8a3fe4f8 AC |
5868 | warning (_("Multiple breakpoints were set.\n" |
5869 | "Use the \"delete\" command to delete unwanted breakpoints.")); | |
80c99de1 PA |
5870 | /* That's it. Discard the cleanups for data inserted into the |
5871 | breakpoint. */ | |
5872 | discard_cleanups (bkpt_chain); | |
5873 | /* But cleanup everything else. */ | |
c3f6f71d | 5874 | do_cleanups (old_chain); |
217dc9e2 | 5875 | |
80c99de1 | 5876 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
217dc9e2 | 5877 | update_global_location_list (1); |
c3f6f71d | 5878 | } |
c906108c | 5879 | |
72b2ff0e VP |
5880 | /* Set a breakpoint. |
5881 | ARG is a string describing breakpoint address, | |
5882 | condition, and thread. | |
5883 | FLAG specifies if a breakpoint is hardware on, | |
5884 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
5885 | and BP_TEMPFLAG. */ | |
5886 | ||
98deb0da | 5887 | static void |
72b2ff0e | 5888 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 5889 | { |
72b2ff0e VP |
5890 | int hardwareflag = flag & BP_HARDWAREFLAG; |
5891 | int tempflag = flag & BP_TEMPFLAG; | |
c3f6f71d | 5892 | |
98deb0da VP |
5893 | break_command_really (arg, |
5894 | NULL, 0, 1 /* parse arg */, | |
1042e4c0 | 5895 | tempflag, hardwareflag, 0 /* traceflag */, |
98deb0da | 5896 | 0 /* Ignore count */, |
604133b5 AR |
5897 | pending_break_support, |
5898 | NULL /* breakpoint_ops */, | |
41447f92 VP |
5899 | from_tty, |
5900 | 1 /* enabled */); | |
c906108c SS |
5901 | } |
5902 | ||
72b2ff0e | 5903 | |
98deb0da VP |
5904 | void |
5905 | set_breakpoint (char *address, char *condition, | |
c3f6f71d | 5906 | int hardwareflag, int tempflag, |
ce43223b | 5907 | int thread, int ignore_count, |
41447f92 | 5908 | int pending, int enabled) |
c3f6f71d | 5909 | { |
98deb0da VP |
5910 | break_command_really (address, condition, thread, |
5911 | 0 /* condition and thread are valid. */, | |
1042e4c0 | 5912 | tempflag, hardwareflag, 0 /* traceflag */, |
98deb0da VP |
5913 | ignore_count, |
5914 | pending | |
5915 | ? AUTO_BOOLEAN_TRUE : AUTO_BOOLEAN_FALSE, | |
41447f92 | 5916 | NULL, 0, enabled); |
c3f6f71d JM |
5917 | } |
5918 | ||
6a048695 JB |
5919 | /* Adjust SAL to the first instruction past the function prologue. |
5920 | The end of the prologue is determined using the line table from | |
3daf8fe5 JG |
5921 | the debugging information. explicit_pc and explicit_line are |
5922 | not modified. | |
6a048695 JB |
5923 | |
5924 | If SAL is already past the prologue, then do nothing. */ | |
5925 | ||
5926 | static void | |
5927 | skip_prologue_sal (struct symtab_and_line *sal) | |
5928 | { | |
5929 | struct symbol *sym = find_pc_function (sal->pc); | |
5930 | struct symtab_and_line start_sal; | |
5931 | ||
5932 | if (sym == NULL) | |
5933 | return; | |
5934 | ||
5935 | start_sal = find_function_start_sal (sym, 1); | |
5936 | if (sal->pc < start_sal.pc) | |
3daf8fe5 JG |
5937 | { |
5938 | start_sal.explicit_line = sal->explicit_line; | |
5939 | start_sal.explicit_pc = sal->explicit_pc; | |
5940 | *sal = start_sal; | |
5941 | } | |
6a048695 | 5942 | } |
c3f6f71d | 5943 | |
c906108c SS |
5944 | /* Helper function for break_command_1 and disassemble_command. */ |
5945 | ||
5946 | void | |
fba45db2 | 5947 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
5948 | { |
5949 | CORE_ADDR pc; | |
5950 | ||
5951 | if (sal->pc == 0 && sal->symtab != NULL) | |
5952 | { | |
5953 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 5954 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
5955 | sal->line, sal->symtab->filename); |
5956 | sal->pc = pc; | |
6a048695 JB |
5957 | |
5958 | /* If this SAL corresponds to a breakpoint inserted using | |
5959 | a line number, then skip the function prologue if necessary. */ | |
5960 | if (sal->explicit_line) | |
56ef84b1 TT |
5961 | { |
5962 | /* Preserve the original line number. */ | |
5963 | int saved_line = sal->line; | |
5964 | skip_prologue_sal (sal); | |
5965 | sal->line = saved_line; | |
5966 | } | |
c906108c SS |
5967 | } |
5968 | ||
5969 | if (sal->section == 0 && sal->symtab != NULL) | |
5970 | { | |
5971 | struct blockvector *bv; | |
c5aa993b JM |
5972 | struct block *b; |
5973 | struct symbol *sym; | |
c906108c | 5974 | |
801e3a5b | 5975 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
5976 | if (bv != NULL) |
5977 | { | |
7f0df278 | 5978 | sym = block_linkage_function (b); |
c906108c SS |
5979 | if (sym != NULL) |
5980 | { | |
5981 | fixup_symbol_section (sym, sal->symtab->objfile); | |
714835d5 | 5982 | sal->section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
5983 | } |
5984 | else | |
5985 | { | |
5986 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
5987 | have to look harder. This case can be executed if we have |
5988 | line numbers but no functions (as can happen in assembly | |
5989 | source). */ | |
c906108c | 5990 | |
c5aa993b | 5991 | struct minimal_symbol *msym; |
c906108c SS |
5992 | |
5993 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
5994 | if (msym) | |
714835d5 | 5995 | sal->section = SYMBOL_OBJ_SECTION (msym); |
c906108c SS |
5996 | } |
5997 | } | |
5998 | } | |
5999 | } | |
6000 | ||
6001 | void | |
fba45db2 | 6002 | break_command (char *arg, int from_tty) |
c906108c | 6003 | { |
db107f19 | 6004 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
6005 | } |
6006 | ||
c906108c | 6007 | void |
fba45db2 | 6008 | tbreak_command (char *arg, int from_tty) |
c906108c | 6009 | { |
db107f19 | 6010 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
6011 | } |
6012 | ||
c906108c | 6013 | static void |
fba45db2 | 6014 | hbreak_command (char *arg, int from_tty) |
c906108c | 6015 | { |
db107f19 | 6016 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
6017 | } |
6018 | ||
6019 | static void | |
fba45db2 | 6020 | thbreak_command (char *arg, int from_tty) |
c906108c | 6021 | { |
db107f19 | 6022 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
6023 | } |
6024 | ||
6025 | static void | |
fba45db2 | 6026 | stop_command (char *arg, int from_tty) |
c906108c | 6027 | { |
a3f17187 | 6028 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 6029 | Usage: stop in <function | address>\n\ |
a3f17187 | 6030 | stop at <line>\n")); |
c906108c SS |
6031 | } |
6032 | ||
6033 | static void | |
fba45db2 | 6034 | stopin_command (char *arg, int from_tty) |
c906108c SS |
6035 | { |
6036 | int badInput = 0; | |
6037 | ||
c5aa993b | 6038 | if (arg == (char *) NULL) |
c906108c SS |
6039 | badInput = 1; |
6040 | else if (*arg != '*') | |
6041 | { | |
6042 | char *argptr = arg; | |
6043 | int hasColon = 0; | |
6044 | ||
53a5351d JM |
6045 | /* look for a ':'. If this is a line number specification, then |
6046 | say it is bad, otherwise, it should be an address or | |
6047 | function/method name */ | |
c906108c | 6048 | while (*argptr && !hasColon) |
c5aa993b JM |
6049 | { |
6050 | hasColon = (*argptr == ':'); | |
6051 | argptr++; | |
6052 | } | |
c906108c SS |
6053 | |
6054 | if (hasColon) | |
c5aa993b | 6055 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 6056 | else |
c5aa993b | 6057 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
6058 | } |
6059 | ||
6060 | if (badInput) | |
a3f17187 | 6061 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 6062 | else |
db107f19 | 6063 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
6064 | } |
6065 | ||
6066 | static void | |
fba45db2 | 6067 | stopat_command (char *arg, int from_tty) |
c906108c SS |
6068 | { |
6069 | int badInput = 0; | |
6070 | ||
c5aa993b | 6071 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
6072 | badInput = 1; |
6073 | else | |
6074 | { | |
6075 | char *argptr = arg; | |
6076 | int hasColon = 0; | |
6077 | ||
6078 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 6079 | it is probably a line number. */ |
c906108c | 6080 | while (*argptr && !hasColon) |
c5aa993b JM |
6081 | { |
6082 | hasColon = (*argptr == ':'); | |
6083 | argptr++; | |
6084 | } | |
c906108c SS |
6085 | |
6086 | if (hasColon) | |
c5aa993b | 6087 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 6088 | else |
c5aa993b | 6089 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
6090 | } |
6091 | ||
6092 | if (badInput) | |
a3f17187 | 6093 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 6094 | else |
db107f19 | 6095 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
6096 | } |
6097 | ||
53a5351d JM |
6098 | /* accessflag: hw_write: watch write, |
6099 | hw_read: watch read, | |
6100 | hw_access: watch access (read or write) */ | |
c906108c | 6101 | static void |
fba45db2 | 6102 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c | 6103 | { |
d983da9c | 6104 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c SS |
6105 | struct symtab_and_line sal; |
6106 | struct expression *exp; | |
6107 | struct block *exp_valid_block; | |
6108 | struct value *val, *mark; | |
6109 | struct frame_info *frame; | |
6110 | struct frame_info *prev_frame = NULL; | |
6111 | char *exp_start = NULL; | |
6112 | char *exp_end = NULL; | |
37e4754d | 6113 | char *tok, *id_tok_start, *end_tok; |
c906108c SS |
6114 | int toklen; |
6115 | char *cond_start = NULL; | |
6116 | char *cond_end = NULL; | |
6117 | struct expression *cond = NULL; | |
6118 | int i, other_type_used, target_resources_ok = 0; | |
6119 | enum bptype bp_type; | |
6120 | int mem_cnt = 0; | |
37e4754d | 6121 | int thread = -1; |
c906108c | 6122 | |
fe39c653 | 6123 | init_sal (&sal); /* initialize to zeroes */ |
c5aa993b | 6124 | |
37e4754d LM |
6125 | /* Make sure that we actually have parameters to parse. */ |
6126 | if (arg != NULL && arg[0] != '\0') | |
6127 | { | |
6128 | toklen = strlen (arg); /* Size of argument list. */ | |
6129 | ||
6130 | /* Points tok to the end of the argument list. */ | |
6131 | tok = arg + toklen - 1; | |
6132 | ||
6133 | /* Go backwards in the parameters list. Skip the last parameter. | |
6134 | If we're expecting a 'thread <thread_num>' parameter, this should | |
6135 | be the thread identifier. */ | |
6136 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
6137 | tok--; | |
6138 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
6139 | tok--; | |
6140 | ||
6141 | /* Points end_tok to the beginning of the last token. */ | |
6142 | id_tok_start = tok + 1; | |
6143 | ||
6144 | /* Go backwards in the parameters list. Skip one more parameter. | |
6145 | If we're expecting a 'thread <thread_num>' parameter, we should | |
6146 | reach a "thread" token. */ | |
6147 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
6148 | tok--; | |
6149 | ||
6150 | end_tok = tok; | |
6151 | ||
6152 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
6153 | tok--; | |
6154 | ||
6155 | /* Move the pointer forward to skip the whitespace and | |
6156 | calculate the length of the token. */ | |
6157 | tok++; | |
6158 | toklen = end_tok - tok; | |
6159 | ||
6160 | if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
6161 | { | |
6162 | /* At this point we've found a "thread" token, which means | |
6163 | the user is trying to set a watchpoint that triggers | |
6164 | only in a specific thread. */ | |
6165 | char *endp; | |
6166 | ||
6167 | /* Extract the thread ID from the next token. */ | |
6168 | thread = strtol (id_tok_start, &endp, 0); | |
6169 | ||
6170 | /* Check if the user provided a valid numeric value for the | |
6171 | thread ID. */ | |
6172 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
6173 | error (_("Invalid thread ID specification %s."), id_tok_start); | |
6174 | ||
6175 | /* Check if the thread actually exists. */ | |
6176 | if (!valid_thread_id (thread)) | |
6177 | error (_("Unknown thread %d."), thread); | |
6178 | ||
6179 | /* Truncate the string and get rid of the thread <thread_num> | |
6180 | parameter before the parameter list is parsed by the | |
6181 | evaluate_expression() function. */ | |
6182 | *tok = '\0'; | |
6183 | } | |
6184 | } | |
6185 | ||
6186 | /* Parse the rest of the arguments. */ | |
c906108c SS |
6187 | innermost_block = NULL; |
6188 | exp_start = arg; | |
6189 | exp = parse_exp_1 (&arg, 0, 0); | |
6190 | exp_end = arg; | |
fa8a61dc TT |
6191 | /* Remove trailing whitespace from the expression before saving it. |
6192 | This makes the eventual display of the expression string a bit | |
6193 | prettier. */ | |
6194 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
6195 | --exp_end; | |
6196 | ||
c906108c SS |
6197 | exp_valid_block = innermost_block; |
6198 | mark = value_mark (); | |
fa4727a6 DJ |
6199 | fetch_watchpoint_value (exp, &val, NULL, NULL); |
6200 | if (val != NULL) | |
6201 | release_value (val); | |
c906108c SS |
6202 | |
6203 | tok = arg; | |
6204 | while (*tok == ' ' || *tok == '\t') | |
6205 | tok++; | |
6206 | end_tok = tok; | |
6207 | ||
6208 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
6209 | end_tok++; | |
6210 | ||
6211 | toklen = end_tok - tok; | |
6212 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
6213 | { | |
6214 | tok = cond_start = end_tok + 1; | |
6215 | cond = parse_exp_1 (&tok, 0, 0); | |
6216 | cond_end = tok; | |
6217 | } | |
6218 | if (*tok) | |
8a3fe4f8 | 6219 | error (_("Junk at end of command.")); |
c906108c | 6220 | |
53a5351d | 6221 | if (accessflag == hw_read) |
c5aa993b | 6222 | bp_type = bp_read_watchpoint; |
53a5351d | 6223 | else if (accessflag == hw_access) |
c5aa993b JM |
6224 | bp_type = bp_access_watchpoint; |
6225 | else | |
6226 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
6227 | |
6228 | mem_cnt = can_use_hardware_watchpoint (val); | |
6229 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
8a3fe4f8 | 6230 | error (_("Expression cannot be implemented with read/access watchpoint.")); |
c5aa993b JM |
6231 | if (mem_cnt != 0) |
6232 | { | |
6233 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d | 6234 | target_resources_ok = |
d92524f1 | 6235 | target_can_use_hardware_watchpoint (bp_type, i + mem_cnt, |
53a5351d | 6236 | other_type_used); |
c5aa993b | 6237 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 6238 | error (_("Target does not support this type of hardware watchpoint.")); |
53a5351d | 6239 | |
c5aa993b | 6240 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 6241 | error (_("Target can only support one kind of HW watchpoint at a time.")); |
c5aa993b | 6242 | } |
c906108c | 6243 | |
4d28f7a8 KB |
6244 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
6245 | watchpoint could not be set. */ | |
6246 | if (!mem_cnt || target_resources_ok <= 0) | |
6247 | bp_type = bp_watchpoint; | |
6248 | ||
d983da9c DJ |
6249 | frame = block_innermost_frame (exp_valid_block); |
6250 | if (frame) | |
6251 | prev_frame = get_prev_frame (frame); | |
6252 | else | |
6253 | prev_frame = NULL; | |
6254 | ||
6255 | /* If the expression is "local", then set up a "watchpoint scope" | |
6256 | breakpoint at the point where we've left the scope of the watchpoint | |
6257 | expression. Create the scope breakpoint before the watchpoint, so | |
6258 | that we will encounter it first in bpstat_stop_status. */ | |
6259 | if (innermost_block && prev_frame) | |
6260 | { | |
6261 | scope_breakpoint = create_internal_breakpoint (get_frame_pc (prev_frame), | |
6262 | bp_watchpoint_scope); | |
6263 | ||
6264 | scope_breakpoint->enable_state = bp_enabled; | |
6265 | ||
6266 | /* Automatically delete the breakpoint when it hits. */ | |
6267 | scope_breakpoint->disposition = disp_del; | |
6268 | ||
6269 | /* Only break in the proper frame (help with recursion). */ | |
6270 | scope_breakpoint->frame_id = get_frame_id (prev_frame); | |
6271 | ||
6272 | /* Set the address at which we will stop. */ | |
6273 | scope_breakpoint->loc->requested_address | |
6274 | = get_frame_pc (prev_frame); | |
6275 | scope_breakpoint->loc->address | |
6276 | = adjust_breakpoint_address (scope_breakpoint->loc->requested_address, | |
6277 | scope_breakpoint->type); | |
6278 | } | |
6279 | ||
c906108c | 6280 | /* Now set up the breakpoint. */ |
4d28f7a8 | 6281 | b = set_raw_breakpoint (sal, bp_type); |
c906108c SS |
6282 | set_breakpoint_count (breakpoint_count + 1); |
6283 | b->number = breakpoint_count; | |
37e4754d | 6284 | b->thread = thread; |
b5de0fa7 | 6285 | b->disposition = disp_donttouch; |
c906108c SS |
6286 | b->exp = exp; |
6287 | b->exp_valid_block = exp_valid_block; | |
6288 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
6289 | b->val = val; | |
fa4727a6 | 6290 | b->val_valid = 1; |
511a6cd4 | 6291 | b->loc->cond = cond; |
c906108c SS |
6292 | if (cond_start) |
6293 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
6294 | else | |
6295 | b->cond_string = 0; | |
c5aa993b | 6296 | |
c906108c | 6297 | if (frame) |
d983da9c | 6298 | b->watchpoint_frame = get_frame_id (frame); |
c906108c | 6299 | else |
35a487f1 | 6300 | b->watchpoint_frame = null_frame_id; |
c906108c | 6301 | |
d983da9c | 6302 | if (scope_breakpoint != NULL) |
c906108c | 6303 | { |
d983da9c DJ |
6304 | /* The scope breakpoint is related to the watchpoint. We will |
6305 | need to act on them together. */ | |
6306 | b->related_breakpoint = scope_breakpoint; | |
6307 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 6308 | } |
d983da9c | 6309 | |
c906108c SS |
6310 | value_free_to_mark (mark); |
6311 | mention (b); | |
b60e7edf | 6312 | update_global_location_list (1); |
c906108c SS |
6313 | } |
6314 | ||
6315 | /* Return count of locations need to be watched and can be handled | |
6316 | in hardware. If the watchpoint can not be handled | |
6317 | in hardware return zero. */ | |
6318 | ||
c906108c | 6319 | static int |
fba45db2 | 6320 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
6321 | { |
6322 | int found_memory_cnt = 0; | |
2e70b7b9 | 6323 | struct value *head = v; |
c906108c SS |
6324 | |
6325 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 6326 | if (!can_use_hw_watchpoints) |
c906108c | 6327 | return 0; |
c5aa993b | 6328 | |
5c44784c JM |
6329 | /* Make sure that the value of the expression depends only upon |
6330 | memory contents, and values computed from them within GDB. If we | |
6331 | find any register references or function calls, we can't use a | |
6332 | hardware watchpoint. | |
6333 | ||
6334 | The idea here is that evaluating an expression generates a series | |
6335 | of values, one holding the value of every subexpression. (The | |
6336 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
6337 | a*b+c.) GDB's values hold almost enough information to establish | |
6338 | the criteria given above --- they identify memory lvalues, | |
6339 | register lvalues, computed values, etcetera. So we can evaluate | |
6340 | the expression, and then scan the chain of values that leaves | |
6341 | behind to decide whether we can detect any possible change to the | |
6342 | expression's final value using only hardware watchpoints. | |
6343 | ||
6344 | However, I don't think that the values returned by inferior | |
6345 | function calls are special in any way. So this function may not | |
6346 | notice that an expression involving an inferior function call | |
6347 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 6348 | for (; v; v = value_next (v)) |
c906108c | 6349 | { |
5c44784c | 6350 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 6351 | { |
d69fe07e | 6352 | if (value_lazy (v)) |
5c44784c JM |
6353 | /* A lazy memory lvalue is one that GDB never needed to fetch; |
6354 | we either just used its address (e.g., `a' in `a.b') or | |
6355 | we never needed it at all (e.g., `a' in `a,b'). */ | |
6356 | ; | |
53a5351d | 6357 | else |
5c44784c JM |
6358 | { |
6359 | /* Ahh, memory we actually used! Check if we can cover | |
6360 | it with hardware watchpoints. */ | |
df407dfe | 6361 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
6362 | |
6363 | /* We only watch structs and arrays if user asked for it | |
6364 | explicitly, never if they just happen to appear in a | |
6365 | middle of some value chain. */ | |
6366 | if (v == head | |
6367 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
6368 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
6369 | { | |
42ae5230 | 6370 | CORE_ADDR vaddr = value_address (v); |
df407dfe | 6371 | int len = TYPE_LENGTH (value_type (v)); |
2e70b7b9 | 6372 | |
d92524f1 | 6373 | if (!target_region_ok_for_hw_watchpoint (vaddr, len)) |
2e70b7b9 MS |
6374 | return 0; |
6375 | else | |
6376 | found_memory_cnt++; | |
6377 | } | |
5c44784c | 6378 | } |
c5aa993b | 6379 | } |
5086187c AC |
6380 | else if (VALUE_LVAL (v) != not_lval |
6381 | && deprecated_value_modifiable (v) == 0) | |
53a5351d | 6382 | return 0; /* ??? What does this represent? */ |
5086187c | 6383 | else if (VALUE_LVAL (v) == lval_register) |
53a5351d | 6384 | return 0; /* cannot watch a register with a HW watchpoint */ |
c906108c SS |
6385 | } |
6386 | ||
6387 | /* The expression itself looks suitable for using a hardware | |
6388 | watchpoint, but give the target machine a chance to reject it. */ | |
6389 | return found_memory_cnt; | |
6390 | } | |
6391 | ||
8b93c638 | 6392 | void |
fba45db2 | 6393 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6394 | { |
6395 | watch_command (arg, from_tty); | |
6396 | } | |
8926118c | 6397 | |
c5aa993b | 6398 | static void |
fba45db2 | 6399 | watch_command (char *arg, int from_tty) |
c906108c | 6400 | { |
53a5351d | 6401 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
6402 | } |
6403 | ||
8b93c638 | 6404 | void |
fba45db2 | 6405 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6406 | { |
6407 | rwatch_command (arg, from_tty); | |
6408 | } | |
8926118c | 6409 | |
c5aa993b | 6410 | static void |
fba45db2 | 6411 | rwatch_command (char *arg, int from_tty) |
c906108c | 6412 | { |
53a5351d | 6413 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
6414 | } |
6415 | ||
8b93c638 | 6416 | void |
fba45db2 | 6417 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6418 | { |
6419 | awatch_command (arg, from_tty); | |
6420 | } | |
8926118c | 6421 | |
c5aa993b | 6422 | static void |
fba45db2 | 6423 | awatch_command (char *arg, int from_tty) |
c906108c | 6424 | { |
53a5351d | 6425 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 6426 | } |
c906108c | 6427 | \f |
c5aa993b | 6428 | |
43ff13b4 | 6429 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
6430 | because it uses the mechanisms of breakpoints. */ |
6431 | ||
bfec99b2 PA |
6432 | struct until_break_command_continuation_args |
6433 | { | |
6434 | struct breakpoint *breakpoint; | |
6435 | struct breakpoint *breakpoint2; | |
6436 | }; | |
6437 | ||
43ff13b4 JM |
6438 | /* This function is called by fetch_inferior_event via the |
6439 | cmd_continuation pointer, to complete the until command. It takes | |
6440 | care of cleaning up the temporary breakpoints set up by the until | |
6441 | command. */ | |
c2c6d25f | 6442 | static void |
604ead4a | 6443 | until_break_command_continuation (void *arg) |
43ff13b4 | 6444 | { |
bfec99b2 PA |
6445 | struct until_break_command_continuation_args *a = arg; |
6446 | ||
6447 | delete_breakpoint (a->breakpoint); | |
6448 | if (a->breakpoint2) | |
6449 | delete_breakpoint (a->breakpoint2); | |
43ff13b4 JM |
6450 | } |
6451 | ||
c906108c | 6452 | void |
ae66c1fc | 6453 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
6454 | { |
6455 | struct symtabs_and_lines sals; | |
6456 | struct symtab_and_line sal; | |
206415a3 DJ |
6457 | struct frame_info *frame = get_selected_frame (NULL); |
6458 | struct frame_info *prev_frame = get_prev_frame (frame); | |
c906108c | 6459 | struct breakpoint *breakpoint; |
f107f563 | 6460 | struct breakpoint *breakpoint2 = NULL; |
c906108c SS |
6461 | struct cleanup *old_chain; |
6462 | ||
6463 | clear_proceed_status (); | |
6464 | ||
6465 | /* Set a breakpoint where the user wants it and at return from | |
6466 | this function */ | |
c5aa993b | 6467 | |
c906108c SS |
6468 | if (default_breakpoint_valid) |
6469 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 6470 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 6471 | else |
53a5351d | 6472 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 6473 | 0, (char ***) NULL, NULL); |
c5aa993b | 6474 | |
c906108c | 6475 | if (sals.nelts != 1) |
8a3fe4f8 | 6476 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 6477 | |
c906108c | 6478 | sal = sals.sals[0]; |
b8c9b27d | 6479 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 6480 | |
c906108c | 6481 | if (*arg) |
8a3fe4f8 | 6482 | error (_("Junk at end of arguments.")); |
c5aa993b | 6483 | |
c906108c | 6484 | resolve_sal_pc (&sal); |
c5aa993b | 6485 | |
ae66c1fc EZ |
6486 | if (anywhere) |
6487 | /* If the user told us to continue until a specified location, | |
6488 | we don't specify a frame at which we need to stop. */ | |
6489 | breakpoint = set_momentary_breakpoint (sal, null_frame_id, bp_until); | |
6490 | else | |
6491 | /* Otherwise, specify the current frame, because we want to stop only | |
6492 | at the very same frame. */ | |
206415a3 | 6493 | breakpoint = set_momentary_breakpoint (sal, get_frame_id (frame), |
ae66c1fc | 6494 | bp_until); |
c5aa993b | 6495 | |
f107f563 | 6496 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
c906108c | 6497 | |
ae66c1fc EZ |
6498 | /* Keep within the current frame, or in frames called by the current |
6499 | one. */ | |
c906108c SS |
6500 | if (prev_frame) |
6501 | { | |
30f7db39 AC |
6502 | sal = find_pc_line (get_frame_pc (prev_frame), 0); |
6503 | sal.pc = get_frame_pc (prev_frame); | |
f107f563 VP |
6504 | breakpoint2 = set_momentary_breakpoint (sal, get_frame_id (prev_frame), |
6505 | bp_until); | |
6506 | make_cleanup_delete_breakpoint (breakpoint2); | |
c906108c | 6507 | } |
c5aa993b | 6508 | |
c906108c | 6509 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
f107f563 VP |
6510 | |
6511 | /* If we are running asynchronously, and proceed call above has actually | |
6512 | managed to start the target, arrange for breakpoints to be | |
6513 | deleted when the target stops. Otherwise, we're already stopped and | |
6514 | delete breakpoints via cleanup chain. */ | |
6515 | ||
8ea051c5 | 6516 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 6517 | { |
bfec99b2 PA |
6518 | struct until_break_command_continuation_args *args; |
6519 | args = xmalloc (sizeof (*args)); | |
f107f563 | 6520 | |
bfec99b2 PA |
6521 | args->breakpoint = breakpoint; |
6522 | args->breakpoint2 = breakpoint2; | |
f107f563 VP |
6523 | |
6524 | discard_cleanups (old_chain); | |
95e54da7 PA |
6525 | add_continuation (inferior_thread (), |
6526 | until_break_command_continuation, args, | |
604ead4a | 6527 | xfree); |
f107f563 VP |
6528 | } |
6529 | else | |
c5aa993b | 6530 | do_cleanups (old_chain); |
c906108c | 6531 | } |
ae66c1fc | 6532 | |
c906108c | 6533 | static void |
fba45db2 | 6534 | ep_skip_leading_whitespace (char **s) |
c906108c | 6535 | { |
c5aa993b JM |
6536 | if ((s == NULL) || (*s == NULL)) |
6537 | return; | |
6538 | while (isspace (**s)) | |
6539 | *s += 1; | |
c906108c | 6540 | } |
c5aa993b | 6541 | |
c906108c SS |
6542 | /* This function attempts to parse an optional "if <cond>" clause |
6543 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 6544 | |
c906108c SS |
6545 | Else, it returns a pointer to the condition string. (It does not |
6546 | attempt to evaluate the string against a particular block.) And, | |
6547 | it updates arg to point to the first character following the parsed | |
6548 | if clause in the arg string. */ | |
53a5351d | 6549 | |
c906108c | 6550 | static char * |
fba45db2 | 6551 | ep_parse_optional_if_clause (char **arg) |
c906108c | 6552 | { |
c5aa993b JM |
6553 | char *cond_string; |
6554 | ||
6555 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 6556 | return NULL; |
c5aa993b | 6557 | |
c906108c SS |
6558 | /* Skip the "if" keyword. */ |
6559 | (*arg) += 2; | |
c5aa993b | 6560 | |
c906108c SS |
6561 | /* Skip any extra leading whitespace, and record the start of the |
6562 | condition string. */ | |
6563 | ep_skip_leading_whitespace (arg); | |
6564 | cond_string = *arg; | |
c5aa993b | 6565 | |
c906108c SS |
6566 | /* Assume that the condition occupies the remainder of the arg string. */ |
6567 | (*arg) += strlen (cond_string); | |
c5aa993b | 6568 | |
c906108c SS |
6569 | return cond_string; |
6570 | } | |
c5aa993b | 6571 | |
c906108c SS |
6572 | /* This function attempts to parse an optional filename from the arg |
6573 | string. If one is not found, it returns NULL. | |
c5aa993b | 6574 | |
c906108c SS |
6575 | Else, it returns a pointer to the parsed filename. (This function |
6576 | makes no attempt to verify that a file of that name exists, or is | |
6577 | accessible.) And, it updates arg to point to the first character | |
6578 | following the parsed filename in the arg string. | |
c5aa993b | 6579 | |
c906108c SS |
6580 | Note that clients needing to preserve the returned filename for |
6581 | future access should copy it to their own buffers. */ | |
6582 | static char * | |
fba45db2 | 6583 | ep_parse_optional_filename (char **arg) |
c906108c | 6584 | { |
c5aa993b JM |
6585 | static char filename[1024]; |
6586 | char *arg_p = *arg; | |
6587 | int i; | |
6588 | char c; | |
6589 | ||
c906108c SS |
6590 | if ((*arg_p == '\0') || isspace (*arg_p)) |
6591 | return NULL; | |
c5aa993b JM |
6592 | |
6593 | for (i = 0;; i++) | |
c906108c SS |
6594 | { |
6595 | c = *arg_p; | |
6596 | if (isspace (c)) | |
c5aa993b | 6597 | c = '\0'; |
c906108c SS |
6598 | filename[i] = c; |
6599 | if (c == '\0') | |
c5aa993b | 6600 | break; |
c906108c SS |
6601 | arg_p++; |
6602 | } | |
6603 | *arg = arg_p; | |
c5aa993b | 6604 | |
c906108c SS |
6605 | return filename; |
6606 | } | |
c5aa993b | 6607 | |
c906108c SS |
6608 | /* Commands to deal with catching events, such as signals, exceptions, |
6609 | process start/exit, etc. */ | |
c5aa993b JM |
6610 | |
6611 | typedef enum | |
6612 | { | |
44feb3ce TT |
6613 | catch_fork_temporary, catch_vfork_temporary, |
6614 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
6615 | } |
6616 | catch_fork_kind; | |
6617 | ||
c906108c | 6618 | static void |
44feb3ce | 6619 | catch_fork_command_1 (char *arg, int from_tty, struct cmd_list_element *command) |
c906108c | 6620 | { |
c5aa993b | 6621 | char *cond_string = NULL; |
44feb3ce TT |
6622 | catch_fork_kind fork_kind; |
6623 | int tempflag; | |
6624 | ||
6625 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
6626 | tempflag = (fork_kind == catch_fork_temporary | |
6627 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 6628 | |
44feb3ce TT |
6629 | if (!arg) |
6630 | arg = ""; | |
c906108c | 6631 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6632 | |
c906108c | 6633 | /* The allowed syntax is: |
c5aa993b JM |
6634 | catch [v]fork |
6635 | catch [v]fork if <cond> | |
6636 | ||
c906108c SS |
6637 | First, check if there's an if clause. */ |
6638 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6639 | |
c906108c | 6640 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6641 | error (_("Junk at end of arguments.")); |
c5aa993b | 6642 | |
c906108c SS |
6643 | /* If this target supports it, create a fork or vfork catchpoint |
6644 | and enable reporting of such events. */ | |
c5aa993b JM |
6645 | switch (fork_kind) |
6646 | { | |
44feb3ce TT |
6647 | case catch_fork_temporary: |
6648 | case catch_fork_permanent: | |
ce78b96d JB |
6649 | create_fork_vfork_event_catchpoint (tempflag, cond_string, |
6650 | &catch_fork_breakpoint_ops); | |
c906108c | 6651 | break; |
44feb3ce TT |
6652 | case catch_vfork_temporary: |
6653 | case catch_vfork_permanent: | |
ce78b96d JB |
6654 | create_fork_vfork_event_catchpoint (tempflag, cond_string, |
6655 | &catch_vfork_breakpoint_ops); | |
c906108c | 6656 | break; |
c5aa993b | 6657 | default: |
8a3fe4f8 | 6658 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 6659 | break; |
c5aa993b | 6660 | } |
c906108c SS |
6661 | } |
6662 | ||
6663 | static void | |
44feb3ce | 6664 | catch_exec_command_1 (char *arg, int from_tty, struct cmd_list_element *command) |
c906108c | 6665 | { |
44feb3ce | 6666 | int tempflag; |
c5aa993b | 6667 | char *cond_string = NULL; |
c906108c | 6668 | |
44feb3ce TT |
6669 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
6670 | ||
6671 | if (!arg) | |
6672 | arg = ""; | |
c906108c SS |
6673 | ep_skip_leading_whitespace (&arg); |
6674 | ||
6675 | /* The allowed syntax is: | |
c5aa993b JM |
6676 | catch exec |
6677 | catch exec if <cond> | |
c906108c SS |
6678 | |
6679 | First, check if there's an if clause. */ | |
6680 | cond_string = ep_parse_optional_if_clause (&arg); | |
6681 | ||
6682 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6683 | error (_("Junk at end of arguments.")); |
c906108c SS |
6684 | |
6685 | /* If this target supports it, create an exec catchpoint | |
6686 | and enable reporting of such events. */ | |
fe798b75 | 6687 | create_catchpoint (tempflag, cond_string, &catch_exec_breakpoint_ops); |
c906108c | 6688 | } |
c5aa993b | 6689 | |
3086aeae DJ |
6690 | static enum print_stop_action |
6691 | print_exception_catchpoint (struct breakpoint *b) | |
6692 | { | |
ade92717 | 6693 | int bp_temp, bp_throw; |
3086aeae | 6694 | |
ade92717 | 6695 | annotate_catchpoint (b->number); |
3086aeae | 6696 | |
ade92717 AR |
6697 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
6698 | if (b->loc->address != b->loc->requested_address) | |
6699 | breakpoint_adjustment_warning (b->loc->requested_address, | |
6700 | b->loc->address, | |
6701 | b->number, 1); | |
df2b6d2d | 6702 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
6703 | ui_out_text (uiout, |
6704 | bp_temp ? "Temporary catchpoint " | |
6705 | : "Catchpoint "); | |
6706 | if (!ui_out_is_mi_like_p (uiout)) | |
6707 | ui_out_field_int (uiout, "bkptno", b->number); | |
6708 | ui_out_text (uiout, | |
c0b37c48 AR |
6709 | bp_throw ? " (exception thrown), " |
6710 | : " (exception caught), "); | |
ade92717 AR |
6711 | if (ui_out_is_mi_like_p (uiout)) |
6712 | { | |
6713 | ui_out_field_string (uiout, "reason", | |
6714 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
6715 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
6716 | ui_out_field_int (uiout, "bkptno", b->number); | |
6717 | } | |
3086aeae DJ |
6718 | return PRINT_SRC_AND_LOC; |
6719 | } | |
6720 | ||
6721 | static void | |
6722 | print_one_exception_catchpoint (struct breakpoint *b, CORE_ADDR *last_addr) | |
6723 | { | |
79a45b7d TT |
6724 | struct value_print_options opts; |
6725 | get_user_print_options (&opts); | |
6726 | if (opts.addressprint) | |
3086aeae DJ |
6727 | { |
6728 | annotate_field (4); | |
604133b5 AR |
6729 | if (b->loc == NULL || b->loc->shlib_disabled) |
6730 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
6731 | else | |
6732 | ui_out_field_core_addr (uiout, "addr", b->loc->address); | |
3086aeae DJ |
6733 | } |
6734 | annotate_field (5); | |
604133b5 AR |
6735 | if (b->loc) |
6736 | *last_addr = b->loc->address; | |
3086aeae DJ |
6737 | if (strstr (b->addr_string, "throw") != NULL) |
6738 | ui_out_field_string (uiout, "what", "exception throw"); | |
6739 | else | |
6740 | ui_out_field_string (uiout, "what", "exception catch"); | |
6741 | } | |
6742 | ||
6743 | static void | |
6744 | print_mention_exception_catchpoint (struct breakpoint *b) | |
6745 | { | |
ade92717 AR |
6746 | int bp_temp; |
6747 | int bp_throw; | |
6748 | ||
df2b6d2d | 6749 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
6750 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
6751 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
6752 | : _("Catchpoint ")); | |
6753 | ui_out_field_int (uiout, "bkptno", b->number); | |
6754 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
6755 | : _(" (catch)")); | |
3086aeae DJ |
6756 | } |
6757 | ||
6758 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { | |
ce78b96d JB |
6759 | NULL, /* insert */ |
6760 | NULL, /* remove */ | |
6761 | NULL, /* breakpoint_hit */ | |
3086aeae DJ |
6762 | print_exception_catchpoint, |
6763 | print_one_exception_catchpoint, | |
6764 | print_mention_exception_catchpoint | |
6765 | }; | |
6766 | ||
6767 | static int | |
6768 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
6769 | enum exception_event_kind ex_event, int from_tty) | |
6770 | { | |
604133b5 AR |
6771 | char *trigger_func_name; |
6772 | ||
3086aeae | 6773 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 6774 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 6775 | else |
604133b5 | 6776 | trigger_func_name = "__cxa_throw"; |
3086aeae | 6777 | |
604133b5 AR |
6778 | break_command_really (trigger_func_name, cond_string, -1, |
6779 | 0 /* condition and thread are valid. */, | |
1042e4c0 | 6780 | tempflag, 0, 0, |
604133b5 AR |
6781 | 0, |
6782 | AUTO_BOOLEAN_TRUE /* pending */, | |
41447f92 VP |
6783 | &gnu_v3_exception_catchpoint_ops, from_tty, |
6784 | 1 /* enabled */); | |
3086aeae | 6785 | |
3086aeae DJ |
6786 | return 1; |
6787 | } | |
6788 | ||
c5aa993b | 6789 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
6790 | |
6791 | static void | |
fba45db2 KB |
6792 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
6793 | int tempflag, int from_tty) | |
c906108c | 6794 | { |
c5aa993b JM |
6795 | char *cond_string = NULL; |
6796 | struct symtab_and_line *sal = NULL; | |
6797 | ||
44feb3ce TT |
6798 | if (!arg) |
6799 | arg = ""; | |
c906108c | 6800 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6801 | |
c906108c SS |
6802 | cond_string = ep_parse_optional_if_clause (&arg); |
6803 | ||
6804 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6805 | error (_("Junk at end of arguments.")); |
c906108c | 6806 | |
059fb39f PM |
6807 | if (ex_event != EX_EVENT_THROW |
6808 | && ex_event != EX_EVENT_CATCH) | |
8a3fe4f8 | 6809 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 6810 | |
3086aeae DJ |
6811 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
6812 | return; | |
6813 | ||
8a3fe4f8 | 6814 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
6815 | } |
6816 | ||
44feb3ce TT |
6817 | /* Implementation of "catch catch" command. */ |
6818 | ||
6819 | static void | |
6820 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
6821 | { | |
6822 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
6823 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); | |
6824 | } | |
6825 | ||
6826 | /* Implementation of "catch throw" command. */ | |
6827 | ||
6828 | static void | |
6829 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
6830 | { | |
6831 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
6832 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); | |
6833 | } | |
6834 | ||
f7f9143b JB |
6835 | /* Create a breakpoint struct for Ada exception catchpoints. */ |
6836 | ||
6837 | static void | |
6838 | create_ada_exception_breakpoint (struct symtab_and_line sal, | |
6839 | char *addr_string, | |
6840 | char *exp_string, | |
6841 | char *cond_string, | |
6842 | struct expression *cond, | |
6843 | struct breakpoint_ops *ops, | |
6844 | int tempflag, | |
6845 | int from_tty) | |
6846 | { | |
6847 | struct breakpoint *b; | |
6848 | ||
6849 | if (from_tty) | |
6850 | { | |
6851 | describe_other_breakpoints (sal.pc, sal.section, -1); | |
6852 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special | |
6853 | version for exception catchpoints, because two catchpoints | |
6854 | used for different exception names will use the same address. | |
6855 | In this case, a "breakpoint ... also set at..." warning is | |
6856 | unproductive. Besides. the warning phrasing is also a bit | |
6857 | inapropriate, we should use the word catchpoint, and tell | |
6858 | the user what type of catchpoint it is. The above is good | |
6859 | enough for now, though. */ | |
6860 | } | |
6861 | ||
6862 | b = set_raw_breakpoint (sal, bp_breakpoint); | |
6863 | set_breakpoint_count (breakpoint_count + 1); | |
6864 | ||
6865 | b->enable_state = bp_enabled; | |
6866 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
6867 | b->number = breakpoint_count; | |
6868 | b->ignore_count = 0; | |
511a6cd4 | 6869 | b->loc->cond = cond; |
f7f9143b JB |
6870 | b->addr_string = addr_string; |
6871 | b->language = language_ada; | |
6872 | b->cond_string = cond_string; | |
6873 | b->exp_string = exp_string; | |
6874 | b->thread = -1; | |
6875 | b->ops = ops; | |
f7f9143b JB |
6876 | |
6877 | mention (b); | |
b60e7edf | 6878 | update_global_location_list (1); |
f7f9143b JB |
6879 | } |
6880 | ||
6881 | /* Implement the "catch exception" command. */ | |
6882 | ||
6883 | static void | |
44feb3ce TT |
6884 | catch_ada_exception_command (char *arg, int from_tty, |
6885 | struct cmd_list_element *command) | |
f7f9143b | 6886 | { |
44feb3ce | 6887 | int tempflag; |
f7f9143b JB |
6888 | struct symtab_and_line sal; |
6889 | enum bptype type; | |
6890 | char *addr_string = NULL; | |
6891 | char *exp_string = NULL; | |
6892 | char *cond_string = NULL; | |
6893 | struct expression *cond = NULL; | |
6894 | struct breakpoint_ops *ops = NULL; | |
6895 | ||
44feb3ce TT |
6896 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
6897 | ||
6898 | if (!arg) | |
6899 | arg = ""; | |
f7f9143b JB |
6900 | sal = ada_decode_exception_location (arg, &addr_string, &exp_string, |
6901 | &cond_string, &cond, &ops); | |
6902 | create_ada_exception_breakpoint (sal, addr_string, exp_string, | |
6903 | cond_string, cond, ops, tempflag, | |
6904 | from_tty); | |
6905 | } | |
6906 | ||
6907 | /* Implement the "catch assert" command. */ | |
6908 | ||
6909 | static void | |
44feb3ce | 6910 | catch_assert_command (char *arg, int from_tty, struct cmd_list_element *command) |
f7f9143b | 6911 | { |
44feb3ce | 6912 | int tempflag; |
f7f9143b JB |
6913 | struct symtab_and_line sal; |
6914 | char *addr_string = NULL; | |
6915 | struct breakpoint_ops *ops = NULL; | |
6916 | ||
44feb3ce TT |
6917 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
6918 | ||
6919 | if (!arg) | |
6920 | arg = ""; | |
f7f9143b JB |
6921 | sal = ada_decode_assert_location (arg, &addr_string, &ops); |
6922 | create_ada_exception_breakpoint (sal, addr_string, NULL, NULL, NULL, ops, | |
6923 | tempflag, from_tty); | |
6924 | } | |
6925 | ||
c906108c | 6926 | static void |
fba45db2 | 6927 | catch_command (char *arg, int from_tty) |
c906108c | 6928 | { |
44feb3ce | 6929 | error (_("Catch requires an event name.")); |
c906108c SS |
6930 | } |
6931 | \f | |
6932 | ||
6933 | static void | |
fba45db2 | 6934 | tcatch_command (char *arg, int from_tty) |
c906108c | 6935 | { |
44feb3ce | 6936 | error (_("Catch requires an event name.")); |
c906108c SS |
6937 | } |
6938 | ||
80f8a6eb | 6939 | /* Delete breakpoints by address or line. */ |
c906108c SS |
6940 | |
6941 | static void | |
fba45db2 | 6942 | clear_command (char *arg, int from_tty) |
c906108c | 6943 | { |
d6e956e5 VP |
6944 | struct breakpoint *b; |
6945 | VEC(breakpoint_p) *found = 0; | |
6946 | int ix; | |
c906108c SS |
6947 | int default_match; |
6948 | struct symtabs_and_lines sals; | |
6949 | struct symtab_and_line sal; | |
c906108c SS |
6950 | int i; |
6951 | ||
6952 | if (arg) | |
6953 | { | |
6954 | sals = decode_line_spec (arg, 1); | |
6955 | default_match = 0; | |
6956 | } | |
6957 | else | |
6958 | { | |
c5aa993b | 6959 | sals.sals = (struct symtab_and_line *) |
c906108c | 6960 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 6961 | make_cleanup (xfree, sals.sals); |
fe39c653 | 6962 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
6963 | sal.line = default_breakpoint_line; |
6964 | sal.symtab = default_breakpoint_symtab; | |
6965 | sal.pc = default_breakpoint_address; | |
6966 | if (sal.symtab == 0) | |
8a3fe4f8 | 6967 | error (_("No source file specified.")); |
c906108c SS |
6968 | |
6969 | sals.sals[0] = sal; | |
6970 | sals.nelts = 1; | |
6971 | ||
6972 | default_match = 1; | |
6973 | } | |
6974 | ||
ed0616c6 VP |
6975 | /* We don't call resolve_sal_pc here. That's not |
6976 | as bad as it seems, because all existing breakpoints | |
6977 | typically have both file/line and pc set. So, if | |
6978 | clear is given file/line, we can match this to existing | |
6979 | breakpoint without obtaining pc at all. | |
6980 | ||
6981 | We only support clearing given the address explicitly | |
6982 | present in breakpoint table. Say, we've set breakpoint | |
6983 | at file:line. There were several PC values for that file:line, | |
6984 | due to optimization, all in one block. | |
6985 | We've picked one PC value. If "clear" is issued with another | |
6986 | PC corresponding to the same file:line, the breakpoint won't | |
6987 | be cleared. We probably can still clear the breakpoint, but | |
6988 | since the other PC value is never presented to user, user | |
6989 | can only find it by guessing, and it does not seem important | |
6990 | to support that. */ | |
6991 | ||
c906108c | 6992 | /* For each line spec given, delete bps which correspond |
80f8a6eb MS |
6993 | to it. Do it in two passes, solely to preserve the current |
6994 | behavior that from_tty is forced true if we delete more than | |
6995 | one breakpoint. */ | |
c906108c | 6996 | |
80f8a6eb | 6997 | found = NULL; |
c906108c SS |
6998 | for (i = 0; i < sals.nelts; i++) |
6999 | { | |
7000 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
7001 | If line given (pc == 0), clear all bpts on specified line. |
7002 | If defaulting, clear all bpts on default line | |
c906108c | 7003 | or at default pc. |
c5aa993b JM |
7004 | |
7005 | defaulting sal.pc != 0 tests to do | |
7006 | ||
7007 | 0 1 pc | |
7008 | 1 1 pc _and_ line | |
7009 | 0 0 line | |
7010 | 1 0 <can't happen> */ | |
c906108c SS |
7011 | |
7012 | sal = sals.sals[i]; | |
c906108c | 7013 | |
d6e956e5 VP |
7014 | /* Find all matching breakpoints and add them to |
7015 | 'found'. */ | |
7016 | ALL_BREAKPOINTS (b) | |
c5aa993b | 7017 | { |
0d381245 | 7018 | int match = 0; |
80f8a6eb MS |
7019 | /* Are we going to delete b? */ |
7020 | if (b->type != bp_none | |
7021 | && b->type != bp_watchpoint | |
7022 | && b->type != bp_hardware_watchpoint | |
7023 | && b->type != bp_read_watchpoint | |
0d381245 VP |
7024 | && b->type != bp_access_watchpoint) |
7025 | { | |
7026 | struct bp_location *loc = b->loc; | |
7027 | for (; loc; loc = loc->next) | |
7028 | { | |
7029 | int pc_match = sal.pc | |
7030 | && (loc->address == sal.pc) | |
7031 | && (!section_is_overlay (loc->section) | |
7032 | || loc->section == sal.section); | |
7033 | int line_match = ((default_match || (0 == sal.pc)) | |
7034 | && b->source_file != NULL | |
7035 | && sal.symtab != NULL | |
7036 | && strcmp (b->source_file, sal.symtab->filename) == 0 | |
7037 | && b->line_number == sal.line); | |
7038 | if (pc_match || line_match) | |
7039 | { | |
7040 | match = 1; | |
7041 | break; | |
7042 | } | |
7043 | } | |
7044 | } | |
7045 | ||
7046 | if (match) | |
d6e956e5 | 7047 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 7048 | } |
80f8a6eb MS |
7049 | } |
7050 | /* Now go thru the 'found' chain and delete them. */ | |
d6e956e5 | 7051 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
7052 | { |
7053 | if (arg) | |
8a3fe4f8 | 7054 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 7055 | else |
8a3fe4f8 | 7056 | error (_("No breakpoint at this line.")); |
80f8a6eb | 7057 | } |
c906108c | 7058 | |
d6e956e5 | 7059 | if (VEC_length(breakpoint_p, found) > 1) |
80f8a6eb MS |
7060 | from_tty = 1; /* Always report if deleted more than one */ |
7061 | if (from_tty) | |
a3f17187 | 7062 | { |
d6e956e5 | 7063 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
7064 | printf_unfiltered (_("Deleted breakpoint ")); |
7065 | else | |
7066 | printf_unfiltered (_("Deleted breakpoints ")); | |
7067 | } | |
80f8a6eb | 7068 | breakpoints_changed (); |
d6e956e5 VP |
7069 | |
7070 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 7071 | { |
c5aa993b | 7072 | if (from_tty) |
d6e956e5 VP |
7073 | printf_unfiltered ("%d ", b->number); |
7074 | delete_breakpoint (b); | |
c906108c | 7075 | } |
80f8a6eb MS |
7076 | if (from_tty) |
7077 | putchar_unfiltered ('\n'); | |
c906108c SS |
7078 | } |
7079 | \f | |
7080 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
7081 | all breakpoints that are marked for deletion, whether hit or not. | |
7082 | This is called after any breakpoint is hit, or after errors. */ | |
7083 | ||
7084 | void | |
fba45db2 | 7085 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
7086 | { |
7087 | struct breakpoint *b, *temp; | |
7088 | ||
7089 | for (; bs; bs = bs->next) | |
20874c92 VP |
7090 | if (bs->breakpoint_at |
7091 | && bs->breakpoint_at->owner | |
7092 | && bs->breakpoint_at->owner->disposition == disp_del | |
c906108c | 7093 | && bs->stop) |
4f8d1dc6 | 7094 | delete_breakpoint (bs->breakpoint_at->owner); |
c906108c SS |
7095 | |
7096 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7097 | { |
b5de0fa7 | 7098 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
7099 | delete_breakpoint (b); |
7100 | } | |
c906108c SS |
7101 | } |
7102 | ||
f7545552 TT |
7103 | /* A cleanup function which destroys a vector. */ |
7104 | ||
7105 | static void | |
7106 | do_vec_free (void *p) | |
7107 | { | |
7108 | VEC(bp_location_p) **vec = p; | |
7109 | if (*vec) | |
7110 | VEC_free (bp_location_p, *vec); | |
7111 | } | |
7112 | ||
4cd9bd08 | 7113 | /* If SHOULD_INSERT is false, do not insert any breakpoint locations |
b60e7edf PA |
7114 | into the inferior, only remove already-inserted locations that no |
7115 | longer should be inserted. Functions that delete a breakpoint or | |
7116 | breakpoints should pass false, so that deleting a breakpoint | |
7117 | doesn't have the side effect of inserting the locations of other | |
7118 | breakpoints that are marked not-inserted, but should_be_inserted | |
7119 | returns true on them. | |
7120 | ||
7121 | This behaviour is useful is situations close to tear-down -- e.g., | |
7122 | after an exec, while the target still has execution, but breakpoint | |
7123 | shadows of the previous executable image should *NOT* be restored | |
7124 | to the new image; or before detaching, where the target still has | |
7125 | execution and wants to delete breakpoints from GDB's lists, and all | |
7126 | breakpoints had already been removed from the inferior. */ | |
7127 | ||
0d381245 | 7128 | static void |
b60e7edf | 7129 | update_global_location_list (int should_insert) |
0d381245 | 7130 | { |
74960c60 VP |
7131 | struct breakpoint *b; |
7132 | struct bp_location **next = &bp_location_chain; | |
7133 | struct bp_location *loc; | |
7134 | struct bp_location *loc2; | |
74960c60 VP |
7135 | VEC(bp_location_p) *old_locations = NULL; |
7136 | int ret; | |
7137 | int ix; | |
f7545552 TT |
7138 | struct cleanup *cleanups; |
7139 | ||
7140 | cleanups = make_cleanup (do_vec_free, &old_locations); | |
74960c60 VP |
7141 | /* Store old locations for future reference. */ |
7142 | for (loc = bp_location_chain; loc; loc = loc->global_next) | |
7143 | VEC_safe_push (bp_location_p, old_locations, loc); | |
0d381245 | 7144 | |
74960c60 VP |
7145 | bp_location_chain = NULL; |
7146 | ALL_BREAKPOINTS (b) | |
0d381245 | 7147 | { |
74960c60 | 7148 | for (loc = b->loc; loc; loc = loc->next) |
0d381245 | 7149 | { |
74960c60 VP |
7150 | *next = loc; |
7151 | next = &(loc->global_next); | |
7152 | *next = NULL; | |
0d381245 | 7153 | } |
74960c60 VP |
7154 | } |
7155 | ||
7156 | /* Identify bp_location instances that are no longer present in the new | |
7157 | list, and therefore should be freed. Note that it's not necessary that | |
7158 | those locations should be removed from inferior -- if there's another | |
7159 | location at the same address (previously marked as duplicate), | |
7160 | we don't need to remove/insert the location. */ | |
7161 | for (ix = 0; VEC_iterate(bp_location_p, old_locations, ix, loc); ++ix) | |
7162 | { | |
7163 | /* Tells if 'loc' is found amoung the new locations. If not, we | |
7164 | have to free it. */ | |
7165 | int found_object = 0; | |
20874c92 VP |
7166 | /* Tells if the location should remain inserted in the target. */ |
7167 | int keep_in_target = 0; | |
7168 | int removed = 0; | |
74960c60 VP |
7169 | for (loc2 = bp_location_chain; loc2; loc2 = loc2->global_next) |
7170 | if (loc2 == loc) | |
7171 | { | |
7172 | found_object = 1; | |
7173 | break; | |
7174 | } | |
7175 | ||
7176 | /* If this location is no longer present, and inserted, look if there's | |
7177 | maybe a new location at the same address. If so, mark that one | |
7178 | inserted, and don't remove this one. This is needed so that we | |
7179 | don't have a time window where a breakpoint at certain location is not | |
7180 | inserted. */ | |
7181 | ||
7182 | if (loc->inserted) | |
0d381245 | 7183 | { |
74960c60 | 7184 | /* If the location is inserted now, we might have to remove it. */ |
74960c60 VP |
7185 | |
7186 | if (found_object && should_be_inserted (loc)) | |
7187 | { | |
7188 | /* The location is still present in the location list, and still | |
7189 | should be inserted. Don't do anything. */ | |
20874c92 | 7190 | keep_in_target = 1; |
74960c60 VP |
7191 | } |
7192 | else | |
7193 | { | |
7194 | /* The location is either no longer present, or got disabled. | |
7195 | See if there's another location at the same address, in which | |
7196 | case we don't need to remove this one from the target. */ | |
7197 | if (breakpoint_address_is_meaningful (loc->owner)) | |
7198 | for (loc2 = bp_location_chain; loc2; loc2 = loc2->global_next) | |
7199 | { | |
7200 | /* For the sake of should_insert_location. The | |
7201 | call to check_duplicates will fix up this later. */ | |
7202 | loc2->duplicate = 0; | |
7203 | if (should_be_inserted (loc2) | |
7204 | && loc2 != loc && loc2->address == loc->address) | |
7205 | { | |
7206 | loc2->inserted = 1; | |
7207 | loc2->target_info = loc->target_info; | |
20874c92 | 7208 | keep_in_target = 1; |
74960c60 VP |
7209 | break; |
7210 | } | |
7211 | } | |
7212 | } | |
7213 | ||
20874c92 VP |
7214 | if (!keep_in_target) |
7215 | { | |
7216 | if (remove_breakpoint (loc, mark_uninserted)) | |
7217 | { | |
7218 | /* This is just about all we can do. We could keep this | |
7219 | location on the global list, and try to remove it next | |
7220 | time, but there's no particular reason why we will | |
7221 | succeed next time. | |
7222 | ||
7223 | Note that at this point, loc->owner is still valid, | |
7224 | as delete_breakpoint frees the breakpoint only | |
7225 | after calling us. */ | |
7226 | printf_filtered (_("warning: Error removing breakpoint %d\n"), | |
7227 | loc->owner->number); | |
7228 | } | |
7229 | removed = 1; | |
7230 | } | |
0d381245 | 7231 | } |
74960c60 VP |
7232 | |
7233 | if (!found_object) | |
1c5cfe86 PA |
7234 | { |
7235 | if (removed && non_stop) | |
20874c92 VP |
7236 | { |
7237 | /* This location was removed from the targets. In non-stop mode, | |
7238 | a race condition is possible where we've removed a breakpoint, | |
7239 | but stop events for that breakpoint are already queued and will | |
7240 | arrive later. To suppress spurious SIGTRAPs reported to user, | |
7241 | we keep this breakpoint location for a bit, and will retire it | |
7242 | after we see 3 * thread_count events. | |
1c5cfe86 | 7243 | The theory here is that reporting of events should, |
20874c92 VP |
7244 | "on the average", be fair, so after that many event we'll see |
7245 | events from all threads that have anything of interest, and no | |
1c5cfe86 | 7246 | longer need to keep this breakpoint. This is just a |
20874c92 | 7247 | heuristic, but if it's wrong, we'll report unexpected SIGTRAP, |
1c5cfe86 | 7248 | which is usability issue, but not a correctness problem. */ |
20874c92 VP |
7249 | loc->events_till_retirement = 3 * (thread_count () + 1); |
7250 | loc->owner = NULL; | |
20874c92 | 7251 | |
1c5cfe86 PA |
7252 | VEC_safe_push (bp_location_p, moribund_locations, loc); |
7253 | } | |
7254 | else | |
7255 | free_bp_location (loc); | |
20874c92 | 7256 | } |
74960c60 | 7257 | } |
1c5cfe86 | 7258 | |
74960c60 VP |
7259 | ALL_BREAKPOINTS (b) |
7260 | { | |
7261 | check_duplicates (b); | |
0d381245 | 7262 | } |
74960c60 | 7263 | |
50c71eaf | 7264 | if (breakpoints_always_inserted_mode () && should_insert |
c35b1492 | 7265 | && (have_live_inferiors () |
2567c7d9 | 7266 | || (gdbarch_has_global_breakpoints (target_gdbarch)))) |
74960c60 | 7267 | insert_breakpoint_locations (); |
f7545552 TT |
7268 | |
7269 | do_cleanups (cleanups); | |
74960c60 VP |
7270 | } |
7271 | ||
20874c92 VP |
7272 | void |
7273 | breakpoint_retire_moribund (void) | |
7274 | { | |
7275 | struct bp_location *loc; | |
7276 | int ix; | |
7277 | ||
7278 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
7279 | if (--(loc->events_till_retirement) == 0) | |
7280 | { | |
7281 | free_bp_location (loc); | |
7282 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
7283 | --ix; | |
7284 | } | |
7285 | } | |
7286 | ||
74960c60 | 7287 | static void |
b60e7edf | 7288 | update_global_location_list_nothrow (int inserting) |
74960c60 VP |
7289 | { |
7290 | struct gdb_exception e; | |
7291 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
b60e7edf | 7292 | update_global_location_list (inserting); |
0d381245 VP |
7293 | } |
7294 | ||
a474d7c2 PA |
7295 | /* Clear BPT from a BPS. */ |
7296 | static void | |
7297 | bpstat_remove_breakpoint (bpstat bps, struct breakpoint *bpt) | |
7298 | { | |
7299 | bpstat bs; | |
7300 | for (bs = bps; bs; bs = bs->next) | |
7301 | if (bs->breakpoint_at && bs->breakpoint_at->owner == bpt) | |
7302 | { | |
7303 | bs->breakpoint_at = NULL; | |
7304 | bs->old_val = NULL; | |
7305 | /* bs->commands will be freed later. */ | |
7306 | } | |
7307 | } | |
7308 | ||
7309 | /* Callback for iterate_over_threads. */ | |
7310 | static int | |
7311 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
7312 | { | |
7313 | struct breakpoint *bpt = data; | |
7314 | bpstat_remove_breakpoint (th->stop_bpstat, bpt); | |
7315 | return 0; | |
7316 | } | |
7317 | ||
53a5351d JM |
7318 | /* Delete a breakpoint and clean up all traces of it in the data |
7319 | structures. */ | |
c906108c SS |
7320 | |
7321 | void | |
fba45db2 | 7322 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 7323 | { |
52f0bd74 | 7324 | struct breakpoint *b; |
74960c60 | 7325 | struct bp_location *loc, *next; |
c906108c | 7326 | |
8a3fe4f8 | 7327 | gdb_assert (bpt != NULL); |
c906108c SS |
7328 | |
7329 | /* Has this bp already been deleted? This can happen because multiple | |
7330 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
7331 | ||
7332 | One example of this happening is a watchpoint's scope bp. When the | |
7333 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
7334 | delete it. We also delete its scope bp. But the scope bp is marked | |
7335 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
7336 | checked for auto-deleting bp's, which are deleted. | |
7337 | ||
7338 | A real solution to this problem might involve reference counts in bp's, | |
7339 | and/or giving them pointers back to their referencing bpstat's, and | |
7340 | teaching delete_breakpoint to only free a bp's storage when no more | |
1272ad14 | 7341 | references were extent. A cheaper bandaid was chosen. */ |
c906108c SS |
7342 | if (bpt->type == bp_none) |
7343 | return; | |
7344 | ||
383f836e | 7345 | observer_notify_breakpoint_deleted (bpt->number); |
c906108c | 7346 | |
c906108c SS |
7347 | if (breakpoint_chain == bpt) |
7348 | breakpoint_chain = bpt->next; | |
7349 | ||
c906108c SS |
7350 | ALL_BREAKPOINTS (b) |
7351 | if (b->next == bpt) | |
c5aa993b JM |
7352 | { |
7353 | b->next = bpt->next; | |
7354 | break; | |
7355 | } | |
c906108c | 7356 | |
c906108c | 7357 | free_command_lines (&bpt->commands); |
c906108c | 7358 | if (bpt->cond_string != NULL) |
b8c9b27d | 7359 | xfree (bpt->cond_string); |
c906108c | 7360 | if (bpt->addr_string != NULL) |
b8c9b27d | 7361 | xfree (bpt->addr_string); |
c906108c | 7362 | if (bpt->exp != NULL) |
b8c9b27d | 7363 | xfree (bpt->exp); |
c906108c | 7364 | if (bpt->exp_string != NULL) |
b8c9b27d | 7365 | xfree (bpt->exp_string); |
c906108c SS |
7366 | if (bpt->val != NULL) |
7367 | value_free (bpt->val); | |
7368 | if (bpt->source_file != NULL) | |
b8c9b27d | 7369 | xfree (bpt->source_file); |
c906108c | 7370 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 7371 | xfree (bpt->exec_pathname); |
c906108c SS |
7372 | |
7373 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
7374 | /* FIXME, how can we find all bpstat's? | |
198757a8 VP |
7375 | We just check stop_bpstat for now. Note that we cannot just |
7376 | remove bpstats pointing at bpt from the stop_bpstat list | |
7377 | entirely, as breakpoint commands are associated with the bpstat; | |
7378 | if we remove it here, then the later call to | |
7379 | bpstat_do_actions (&stop_bpstat); | |
7380 | in event-top.c won't do anything, and temporary breakpoints | |
7381 | with commands won't work. */ | |
a474d7c2 | 7382 | |
a474d7c2 | 7383 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); |
74960c60 VP |
7384 | |
7385 | /* Now that breakpoint is removed from breakpoint | |
7386 | list, update the global location list. This | |
7387 | will remove locations that used to belong to | |
7388 | this breakpoint. Do this before freeing | |
7389 | the breakpoint itself, since remove_breakpoint | |
7390 | looks at location's owner. It might be better | |
7391 | design to have location completely self-contained, | |
7392 | but it's not the case now. */ | |
b60e7edf | 7393 | update_global_location_list (0); |
74960c60 VP |
7394 | |
7395 | ||
c906108c SS |
7396 | /* On the chance that someone will soon try again to delete this same |
7397 | bp, we mark it as deleted before freeing its storage. */ | |
7398 | bpt->type = bp_none; | |
7399 | ||
b8c9b27d | 7400 | xfree (bpt); |
c906108c SS |
7401 | } |
7402 | ||
4d6140d9 AC |
7403 | static void |
7404 | do_delete_breakpoint_cleanup (void *b) | |
7405 | { | |
7406 | delete_breakpoint (b); | |
7407 | } | |
7408 | ||
7409 | struct cleanup * | |
7410 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
7411 | { | |
7412 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
7413 | } | |
7414 | ||
c906108c | 7415 | void |
fba45db2 | 7416 | delete_command (char *arg, int from_tty) |
c906108c SS |
7417 | { |
7418 | struct breakpoint *b, *temp; | |
7419 | ||
ea9365bb TT |
7420 | dont_repeat (); |
7421 | ||
c906108c SS |
7422 | if (arg == 0) |
7423 | { | |
7424 | int breaks_to_delete = 0; | |
7425 | ||
7426 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
7427 | Do not delete internal or call-dummy breakpoints, these |
7428 | have to be deleted with an explicit breakpoint number argument. */ | |
7429 | ALL_BREAKPOINTS (b) | |
7430 | { | |
059fb39f PM |
7431 | if (b->type != bp_call_dummy |
7432 | && b->type != bp_shlib_event | |
7433 | && b->type != bp_thread_event | |
7434 | && b->type != bp_overlay_event | |
7435 | && b->number >= 0) | |
973d738b DJ |
7436 | { |
7437 | breaks_to_delete = 1; | |
7438 | break; | |
7439 | } | |
c5aa993b | 7440 | } |
c906108c SS |
7441 | |
7442 | /* Ask user only if there are some breakpoints to delete. */ | |
7443 | if (!from_tty | |
e2e0b3e5 | 7444 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 7445 | { |
c5aa993b JM |
7446 | ALL_BREAKPOINTS_SAFE (b, temp) |
7447 | { | |
059fb39f PM |
7448 | if (b->type != bp_call_dummy |
7449 | && b->type != bp_shlib_event | |
7450 | && b->type != bp_thread_event | |
7451 | && b->type != bp_overlay_event | |
7452 | && b->number >= 0) | |
c5aa993b JM |
7453 | delete_breakpoint (b); |
7454 | } | |
c906108c SS |
7455 | } |
7456 | } | |
7457 | else | |
7458 | map_breakpoint_numbers (arg, delete_breakpoint); | |
7459 | } | |
7460 | ||
0d381245 VP |
7461 | static int |
7462 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 7463 | { |
0d381245 VP |
7464 | for (; loc; loc = loc->next) |
7465 | if (!loc->shlib_disabled) | |
7466 | return 0; | |
7467 | return 1; | |
fe3f5fa8 VP |
7468 | } |
7469 | ||
776592bf DE |
7470 | /* Subroutine of update_breakpoint_locations to simplify it. |
7471 | Return non-zero if multiple fns in list LOC have the same name. | |
7472 | Null names are ignored. */ | |
7473 | ||
7474 | static int | |
7475 | ambiguous_names_p (struct bp_location *loc) | |
7476 | { | |
7477 | struct bp_location *l; | |
7478 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
7479 | (int (*) (const void *, const void *)) streq, | |
7480 | NULL, xcalloc, xfree); | |
7481 | ||
7482 | for (l = loc; l != NULL; l = l->next) | |
7483 | { | |
7484 | const char **slot; | |
7485 | const char *name = l->function_name; | |
7486 | ||
7487 | /* Allow for some names to be NULL, ignore them. */ | |
7488 | if (name == NULL) | |
7489 | continue; | |
7490 | ||
7491 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
7492 | INSERT); | |
7493 | /* NOTE: We can assume slot != NULL here because xcalloc never returns | |
7494 | NULL. */ | |
7495 | if (*slot != NULL) | |
7496 | { | |
7497 | htab_delete (htab); | |
7498 | return 1; | |
7499 | } | |
7500 | *slot = name; | |
7501 | } | |
7502 | ||
7503 | htab_delete (htab); | |
7504 | return 0; | |
7505 | } | |
7506 | ||
fe3f5fa8 | 7507 | static void |
0d381245 VP |
7508 | update_breakpoint_locations (struct breakpoint *b, |
7509 | struct symtabs_and_lines sals) | |
fe3f5fa8 VP |
7510 | { |
7511 | int i; | |
7512 | char *s; | |
0d381245 VP |
7513 | struct bp_location *existing_locations = b->loc; |
7514 | ||
7515 | /* If there's no new locations, and all existing locations | |
7516 | are pending, don't do anything. This optimizes | |
7517 | the common case where all locations are in the same | |
7518 | shared library, that was unloaded. We'd like to | |
7519 | retain the location, so that when the library | |
7520 | is loaded again, we don't loose the enabled/disabled | |
7521 | status of the individual locations. */ | |
7522 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) | |
fe3f5fa8 VP |
7523 | return; |
7524 | ||
fe3f5fa8 VP |
7525 | b->loc = NULL; |
7526 | ||
0d381245 | 7527 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 7528 | { |
0d381245 | 7529 | struct bp_location *new_loc = |
39d61571 | 7530 | add_location_to_breakpoint (b, &(sals.sals[i])); |
fe3f5fa8 | 7531 | |
0d381245 VP |
7532 | /* Reparse conditions, they might contain references to the |
7533 | old symtab. */ | |
7534 | if (b->cond_string != NULL) | |
7535 | { | |
7536 | struct gdb_exception e; | |
fe3f5fa8 | 7537 | |
0d381245 VP |
7538 | s = b->cond_string; |
7539 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
7540 | { | |
7541 | new_loc->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), | |
7542 | 0); | |
7543 | } | |
7544 | if (e.reason < 0) | |
7545 | { | |
7546 | warning (_("failed to reevaluate condition for breakpoint %d: %s"), | |
7547 | b->number, e.message); | |
7548 | new_loc->enabled = 0; | |
7549 | } | |
7550 | } | |
fe3f5fa8 | 7551 | |
0d381245 VP |
7552 | if (b->source_file != NULL) |
7553 | xfree (b->source_file); | |
7554 | if (sals.sals[i].symtab == NULL) | |
7555 | b->source_file = NULL; | |
7556 | else | |
1b36a34b | 7557 | b->source_file = xstrdup (sals.sals[i].symtab->filename); |
fe3f5fa8 | 7558 | |
0d381245 VP |
7559 | if (b->line_number == 0) |
7560 | b->line_number = sals.sals[i].line; | |
7561 | } | |
fe3f5fa8 | 7562 | |
514f746b AR |
7563 | /* Update locations of permanent breakpoints. */ |
7564 | if (b->enable_state == bp_permanent) | |
7565 | make_breakpoint_permanent (b); | |
7566 | ||
0d381245 VP |
7567 | /* If possible, carry over 'disable' status from existing breakpoints. */ |
7568 | { | |
7569 | struct bp_location *e = existing_locations; | |
776592bf DE |
7570 | /* If there are multiple breakpoints with the same function name, |
7571 | e.g. for inline functions, comparing function names won't work. | |
7572 | Instead compare pc addresses; this is just a heuristic as things | |
7573 | may have moved, but in practice it gives the correct answer | |
7574 | often enough until a better solution is found. */ | |
7575 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
7576 | ||
0d381245 VP |
7577 | for (; e; e = e->next) |
7578 | { | |
7579 | if (!e->enabled && e->function_name) | |
7580 | { | |
7581 | struct bp_location *l = b->loc; | |
776592bf DE |
7582 | if (have_ambiguous_names) |
7583 | { | |
7584 | for (; l; l = l->next) | |
7585 | if (e->address == l->address) | |
7586 | { | |
7587 | l->enabled = 0; | |
7588 | break; | |
7589 | } | |
7590 | } | |
7591 | else | |
7592 | { | |
7593 | for (; l; l = l->next) | |
7594 | if (l->function_name | |
7595 | && strcmp (e->function_name, l->function_name) == 0) | |
7596 | { | |
7597 | l->enabled = 0; | |
7598 | break; | |
7599 | } | |
7600 | } | |
0d381245 VP |
7601 | } |
7602 | } | |
7603 | } | |
fe3f5fa8 | 7604 | |
b60e7edf | 7605 | update_global_location_list (1); |
fe3f5fa8 VP |
7606 | } |
7607 | ||
7608 | ||
c906108c SS |
7609 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
7610 | The value we return ends up being the return value from catch_errors. | |
7611 | Unused in this case. */ | |
7612 | ||
7613 | static int | |
4efb68b1 | 7614 | breakpoint_re_set_one (void *bint) |
c906108c | 7615 | { |
53a5351d JM |
7616 | /* get past catch_errs */ |
7617 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
7618 | struct value *mark; |
7619 | int i; | |
fe3f5fa8 VP |
7620 | int not_found = 0; |
7621 | int *not_found_ptr = ¬_found; | |
7622 | struct symtabs_and_lines sals = {}; | |
ed0616c6 | 7623 | struct symtabs_and_lines expanded; |
c906108c | 7624 | char *s; |
b5de0fa7 | 7625 | enum enable_state save_enable; |
fe3f5fa8 | 7626 | struct gdb_exception e; |
f7545552 | 7627 | struct cleanup *cleanups; |
c906108c SS |
7628 | |
7629 | switch (b->type) | |
7630 | { | |
7631 | case bp_none: | |
8a3fe4f8 | 7632 | warning (_("attempted to reset apparently deleted breakpoint #%d?"), |
53a5351d | 7633 | b->number); |
c906108c SS |
7634 | return 0; |
7635 | case bp_breakpoint: | |
7636 | case bp_hardware_breakpoint: | |
1042e4c0 | 7637 | case bp_tracepoint: |
c906108c SS |
7638 | if (b->addr_string == NULL) |
7639 | { | |
7640 | /* Anything without a string can't be re-set. */ | |
7641 | delete_breakpoint (b); | |
7642 | return 0; | |
7643 | } | |
c906108c SS |
7644 | |
7645 | set_language (b->language); | |
7646 | input_radix = b->input_radix; | |
7647 | s = b->addr_string; | |
fe3f5fa8 | 7648 | TRY_CATCH (e, RETURN_MASK_ERROR) |
c906108c | 7649 | { |
fe3f5fa8 VP |
7650 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, |
7651 | not_found_ptr); | |
7652 | } | |
7653 | if (e.reason < 0) | |
7654 | { | |
7655 | int not_found_and_ok = 0; | |
7656 | /* For pending breakpoints, it's expected that parsing | |
7657 | will fail until the right shared library is loaded. | |
7658 | User has already told to create pending breakpoints and | |
7659 | don't need extra messages. If breakpoint is in bp_shlib_disabled | |
7660 | state, then user already saw the message about that breakpoint | |
7661 | being disabled, and don't want to see more errors. */ | |
0d381245 VP |
7662 | if (not_found |
7663 | && (b->condition_not_parsed | |
7664 | || (b->loc && b->loc->shlib_disabled) | |
7665 | || b->enable_state == bp_disabled)) | |
fe3f5fa8 VP |
7666 | not_found_and_ok = 1; |
7667 | ||
7668 | if (!not_found_and_ok) | |
c906108c | 7669 | { |
fe3f5fa8 VP |
7670 | /* We surely don't want to warn about the same breakpoint |
7671 | 10 times. One solution, implemented here, is disable | |
7672 | the breakpoint on error. Another solution would be to | |
7673 | have separate 'warning emitted' flag. Since this | |
7674 | happens only when a binary has changed, I don't know | |
7675 | which approach is better. */ | |
7676 | b->enable_state = bp_disabled; | |
7677 | throw_exception (e); | |
c906108c | 7678 | } |
fe3f5fa8 | 7679 | } |
c906108c | 7680 | |
fe3f5fa8 VP |
7681 | if (not_found) |
7682 | break; | |
7683 | ||
7684 | gdb_assert (sals.nelts == 1); | |
7685 | resolve_sal_pc (&sals.sals[0]); | |
0d381245 | 7686 | if (b->condition_not_parsed && s && s[0]) |
fe3f5fa8 VP |
7687 | { |
7688 | char *cond_string = 0; | |
7689 | int thread = -1; | |
4a306c9a JB |
7690 | int task = 0; |
7691 | ||
fe3f5fa8 | 7692 | find_condition_and_thread (s, sals.sals[0].pc, |
4a306c9a | 7693 | &cond_string, &thread, &task); |
fe3f5fa8 VP |
7694 | if (cond_string) |
7695 | b->cond_string = cond_string; | |
7696 | b->thread = thread; | |
4a306c9a | 7697 | b->task = task; |
0d381245 | 7698 | b->condition_not_parsed = 0; |
fe3f5fa8 | 7699 | } |
ed0616c6 | 7700 | expanded = expand_line_sal_maybe (sals.sals[0]); |
f7545552 | 7701 | cleanups = make_cleanup (xfree, sals.sals); |
ed0616c6 | 7702 | update_breakpoint_locations (b, expanded); |
f7545552 | 7703 | do_cleanups (cleanups); |
c906108c SS |
7704 | break; |
7705 | ||
7706 | case bp_watchpoint: | |
7707 | case bp_hardware_watchpoint: | |
7708 | case bp_read_watchpoint: | |
7709 | case bp_access_watchpoint: | |
0b3de036 VP |
7710 | /* Watchpoint can be either on expression using entirely global variables, |
7711 | or it can be on local variables. | |
7712 | ||
7713 | Watchpoints of the first kind are never auto-deleted, and even persist | |
7714 | across program restarts. Since they can use variables from shared | |
7715 | libraries, we need to reparse expression as libraries are loaded | |
7716 | and unloaded. | |
7717 | ||
7718 | Watchpoints on local variables can also change meaning as result | |
7719 | of solib event. For example, if a watchpoint uses both a local and | |
7720 | a global variables in expression, it's a local watchpoint, but | |
7721 | unloading of a shared library will make the expression invalid. | |
7722 | This is not a very common use case, but we still re-evaluate | |
7723 | expression, to avoid surprises to the user. | |
7724 | ||
7725 | Note that for local watchpoints, we re-evaluate it only if | |
7726 | watchpoints frame id is still valid. If it's not, it means | |
7727 | the watchpoint is out of scope and will be deleted soon. In fact, | |
7728 | I'm not sure we'll ever be called in this case. | |
7729 | ||
7730 | If a local watchpoint's frame id is still valid, then | |
7731 | b->exp_valid_block is likewise valid, and we can safely use it. | |
7732 | ||
7733 | Don't do anything about disabled watchpoints, since they will | |
7734 | be reevaluated again when enabled. */ | |
a5606eee | 7735 | update_watchpoint (b, 1 /* reparse */); |
c906108c | 7736 | break; |
c5aa993b JM |
7737 | /* We needn't really do anything to reset these, since the mask |
7738 | that requests them is unaffected by e.g., new libraries being | |
7739 | loaded. */ | |
ce78b96d | 7740 | case bp_catchpoint: |
c906108c | 7741 | break; |
c5aa993b | 7742 | |
c906108c | 7743 | default: |
a3f17187 | 7744 | printf_filtered (_("Deleting unknown breakpoint type %d\n"), b->type); |
c906108c | 7745 | /* fall through */ |
611c83ae PA |
7746 | /* Delete overlay event breakpoints; they will be reset later by |
7747 | breakpoint_re_set. */ | |
1900040c | 7748 | case bp_overlay_event: |
c906108c SS |
7749 | delete_breakpoint (b); |
7750 | break; | |
7751 | ||
c5aa993b JM |
7752 | /* This breakpoint is special, it's set up when the inferior |
7753 | starts and we really don't want to touch it. */ | |
c906108c SS |
7754 | case bp_shlib_event: |
7755 | ||
c4093a6a JM |
7756 | /* Like bp_shlib_event, this breakpoint type is special. |
7757 | Once it is set up, we do not want to touch it. */ | |
7758 | case bp_thread_event: | |
7759 | ||
c5aa993b JM |
7760 | /* Keep temporary breakpoints, which can be encountered when we step |
7761 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7762 | Otherwise these should have been blown away via the cleanup chain | |
7763 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7764 | case bp_until: |
7765 | case bp_finish: | |
7766 | case bp_watchpoint_scope: | |
7767 | case bp_call_dummy: | |
7768 | case bp_step_resume: | |
611c83ae PA |
7769 | case bp_longjmp: |
7770 | case bp_longjmp_resume: | |
c906108c SS |
7771 | break; |
7772 | } | |
7773 | ||
7774 | return 0; | |
7775 | } | |
7776 | ||
69de3c6a | 7777 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 7778 | void |
69de3c6a | 7779 | breakpoint_re_set (void) |
c906108c SS |
7780 | { |
7781 | struct breakpoint *b, *temp; | |
7782 | enum language save_language; | |
7783 | int save_input_radix; | |
c5aa993b | 7784 | |
c906108c SS |
7785 | save_language = current_language->la_language; |
7786 | save_input_radix = input_radix; | |
7787 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7788 | { |
53a5351d | 7789 | /* Format possible error msg */ |
fe3f5fa8 | 7790 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
7791 | b->number); |
7792 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 7793 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 7794 | do_cleanups (cleanups); |
c5aa993b | 7795 | } |
c906108c SS |
7796 | set_language (save_language); |
7797 | input_radix = save_input_radix; | |
e62c965a | 7798 | |
69de3c6a | 7799 | create_overlay_event_breakpoint ("_ovly_debug_event"); |
c906108c SS |
7800 | } |
7801 | \f | |
c906108c SS |
7802 | /* Reset the thread number of this breakpoint: |
7803 | ||
7804 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 7805 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 7806 | void |
fba45db2 | 7807 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
7808 | { |
7809 | if (b->thread != -1) | |
7810 | { | |
39f77062 KB |
7811 | if (in_thread_list (inferior_ptid)) |
7812 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
7813 | } |
7814 | } | |
7815 | ||
03ac34d5 MS |
7816 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7817 | If from_tty is nonzero, it prints a message to that effect, | |
7818 | which ends with a period (no newline). */ | |
7819 | ||
c906108c | 7820 | void |
fba45db2 | 7821 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 7822 | { |
52f0bd74 | 7823 | struct breakpoint *b; |
c906108c SS |
7824 | |
7825 | if (count < 0) | |
7826 | count = 0; | |
7827 | ||
7828 | ALL_BREAKPOINTS (b) | |
7829 | if (b->number == bptnum) | |
c5aa993b JM |
7830 | { |
7831 | b->ignore_count = count; | |
221ea385 KS |
7832 | if (from_tty) |
7833 | { | |
7834 | if (count == 0) | |
a3f17187 | 7835 | printf_filtered (_("Will stop next time breakpoint %d is reached."), |
221ea385 KS |
7836 | bptnum); |
7837 | else if (count == 1) | |
a3f17187 | 7838 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
7839 | bptnum); |
7840 | else | |
a3f17187 | 7841 | printf_filtered (_("Will ignore next %d crossings of breakpoint %d."), |
221ea385 KS |
7842 | count, bptnum); |
7843 | } | |
c5aa993b | 7844 | breakpoints_changed (); |
383f836e | 7845 | observer_notify_breakpoint_modified (b->number); |
c5aa993b JM |
7846 | return; |
7847 | } | |
c906108c | 7848 | |
8a3fe4f8 | 7849 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
7850 | } |
7851 | ||
b2175913 MS |
7852 | void |
7853 | make_breakpoint_silent (struct breakpoint *b) | |
7854 | { | |
7855 | /* Silence the breakpoint. */ | |
7856 | b->silent = 1; | |
7857 | } | |
7858 | ||
c906108c SS |
7859 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
7860 | ||
7861 | static void | |
fba45db2 | 7862 | ignore_command (char *args, int from_tty) |
c906108c SS |
7863 | { |
7864 | char *p = args; | |
52f0bd74 | 7865 | int num; |
c906108c SS |
7866 | |
7867 | if (p == 0) | |
e2e0b3e5 | 7868 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 7869 | |
c906108c | 7870 | num = get_number (&p); |
5c44784c | 7871 | if (num == 0) |
8a3fe4f8 | 7872 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 7873 | if (*p == 0) |
8a3fe4f8 | 7874 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
7875 | |
7876 | set_ignore_count (num, | |
7877 | longest_to_int (value_as_long (parse_and_eval (p))), | |
7878 | from_tty); | |
221ea385 KS |
7879 | if (from_tty) |
7880 | printf_filtered ("\n"); | |
c906108c SS |
7881 | } |
7882 | \f | |
7883 | /* Call FUNCTION on each of the breakpoints | |
7884 | whose numbers are given in ARGS. */ | |
7885 | ||
7886 | static void | |
831662b3 | 7887 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) |
c906108c | 7888 | { |
52f0bd74 | 7889 | char *p = args; |
c906108c | 7890 | char *p1; |
52f0bd74 AC |
7891 | int num; |
7892 | struct breakpoint *b, *tmp; | |
11cf8741 | 7893 | int match; |
c906108c SS |
7894 | |
7895 | if (p == 0) | |
e2e0b3e5 | 7896 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c SS |
7897 | |
7898 | while (*p) | |
7899 | { | |
11cf8741 | 7900 | match = 0; |
c906108c | 7901 | p1 = p; |
c5aa993b | 7902 | |
5c44784c JM |
7903 | num = get_number_or_range (&p1); |
7904 | if (num == 0) | |
c5aa993b | 7905 | { |
8a3fe4f8 | 7906 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
7907 | } |
7908 | else | |
7909 | { | |
7910 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
7911 | if (b->number == num) | |
7912 | { | |
7913 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 7914 | match = 1; |
5c44784c JM |
7915 | function (b); |
7916 | if (related_breakpoint) | |
7917 | function (related_breakpoint); | |
11cf8741 | 7918 | break; |
5c44784c | 7919 | } |
11cf8741 | 7920 | if (match == 0) |
a3f17187 | 7921 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 7922 | } |
c906108c SS |
7923 | p = p1; |
7924 | } | |
7925 | } | |
7926 | ||
0d381245 VP |
7927 | static struct bp_location * |
7928 | find_location_by_number (char *number) | |
7929 | { | |
7930 | char *dot = strchr (number, '.'); | |
7931 | char *p1; | |
7932 | int bp_num; | |
7933 | int loc_num; | |
7934 | struct breakpoint *b; | |
7935 | struct bp_location *loc; | |
7936 | ||
7937 | *dot = '\0'; | |
7938 | ||
7939 | p1 = number; | |
7940 | bp_num = get_number_or_range (&p1); | |
7941 | if (bp_num == 0) | |
7942 | error (_("Bad breakpoint number '%s'"), number); | |
7943 | ||
7944 | ALL_BREAKPOINTS (b) | |
7945 | if (b->number == bp_num) | |
7946 | { | |
7947 | break; | |
7948 | } | |
7949 | ||
7950 | if (!b || b->number != bp_num) | |
7951 | error (_("Bad breakpoint number '%s'"), number); | |
7952 | ||
7953 | p1 = dot+1; | |
7954 | loc_num = get_number_or_range (&p1); | |
7955 | if (loc_num == 0) | |
7956 | error (_("Bad breakpoint location number '%s'"), number); | |
7957 | ||
7958 | --loc_num; | |
7959 | loc = b->loc; | |
7960 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
7961 | ; | |
7962 | if (!loc) | |
7963 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
7964 | ||
7965 | return loc; | |
7966 | } | |
7967 | ||
7968 | ||
1900040c MS |
7969 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7970 | If from_tty is nonzero, it prints a message to that effect, | |
7971 | which ends with a period (no newline). */ | |
7972 | ||
c906108c | 7973 | void |
fba45db2 | 7974 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7975 | { |
7976 | /* Never disable a watchpoint scope breakpoint; we want to | |
7977 | hit them when we leave scope so we can delete both the | |
7978 | watchpoint and its scope breakpoint at that time. */ | |
7979 | if (bpt->type == bp_watchpoint_scope) | |
7980 | return; | |
7981 | ||
c2c6d25f | 7982 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 7983 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
7984 | return; |
7985 | ||
b5de0fa7 | 7986 | bpt->enable_state = bp_disabled; |
c906108c | 7987 | |
b60e7edf | 7988 | update_global_location_list (0); |
c906108c | 7989 | |
383f836e | 7990 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
7991 | } |
7992 | ||
c906108c | 7993 | static void |
fba45db2 | 7994 | disable_command (char *args, int from_tty) |
c906108c | 7995 | { |
52f0bd74 | 7996 | struct breakpoint *bpt; |
c906108c SS |
7997 | if (args == 0) |
7998 | ALL_BREAKPOINTS (bpt) | |
7999 | switch (bpt->type) | |
c5aa993b JM |
8000 | { |
8001 | case bp_none: | |
8a3fe4f8 | 8002 | warning (_("attempted to disable apparently deleted breakpoint #%d?"), |
53a5351d | 8003 | bpt->number); |
c5aa993b JM |
8004 | continue; |
8005 | case bp_breakpoint: | |
1042e4c0 | 8006 | case bp_tracepoint: |
ce78b96d | 8007 | case bp_catchpoint: |
c5aa993b JM |
8008 | case bp_hardware_breakpoint: |
8009 | case bp_watchpoint: | |
8010 | case bp_hardware_watchpoint: | |
8011 | case bp_read_watchpoint: | |
8012 | case bp_access_watchpoint: | |
8013 | disable_breakpoint (bpt); | |
8014 | default: | |
8015 | continue; | |
8016 | } | |
0d381245 VP |
8017 | else if (strchr (args, '.')) |
8018 | { | |
8019 | struct bp_location *loc = find_location_by_number (args); | |
8020 | if (loc) | |
8021 | loc->enabled = 0; | |
b60e7edf | 8022 | update_global_location_list (0); |
0d381245 | 8023 | } |
c906108c SS |
8024 | else |
8025 | map_breakpoint_numbers (args, disable_breakpoint); | |
8026 | } | |
8027 | ||
8028 | static void | |
fba45db2 | 8029 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 8030 | { |
c906108c SS |
8031 | int target_resources_ok, other_type_used; |
8032 | struct value *mark; | |
8033 | ||
8034 | if (bpt->type == bp_hardware_breakpoint) | |
8035 | { | |
8036 | int i; | |
c5aa993b | 8037 | i = hw_breakpoint_used_count (); |
53a5351d | 8038 | target_resources_ok = |
d92524f1 | 8039 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 8040 | i + 1, 0); |
c906108c | 8041 | if (target_resources_ok == 0) |
8a3fe4f8 | 8042 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 8043 | else if (target_resources_ok < 0) |
8a3fe4f8 | 8044 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
8045 | } |
8046 | ||
059fb39f PM |
8047 | if (bpt->type == bp_watchpoint |
8048 | || bpt->type == bp_hardware_watchpoint | |
8049 | || bpt->type == bp_read_watchpoint | |
8050 | || bpt->type == bp_access_watchpoint) | |
c906108c | 8051 | { |
dde02812 ES |
8052 | struct gdb_exception e; |
8053 | ||
8054 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 8055 | { |
dde02812 | 8056 | update_watchpoint (bpt, 1 /* reparse */); |
c906108c | 8057 | } |
dde02812 | 8058 | if (e.reason < 0) |
c5aa993b | 8059 | { |
dde02812 ES |
8060 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
8061 | bpt->number); | |
8062 | return; | |
c5aa993b | 8063 | } |
c906108c | 8064 | } |
0101ce28 | 8065 | |
b4c291bb KH |
8066 | if (bpt->enable_state != bp_permanent) |
8067 | bpt->enable_state = bp_enabled; | |
8068 | bpt->disposition = disposition; | |
b60e7edf | 8069 | update_global_location_list (1); |
b4c291bb KH |
8070 | breakpoints_changed (); |
8071 | ||
383f836e | 8072 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
8073 | } |
8074 | ||
fe3f5fa8 | 8075 | |
c906108c | 8076 | void |
fba45db2 | 8077 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
8078 | { |
8079 | do_enable_breakpoint (bpt, bpt->disposition); | |
8080 | } | |
8081 | ||
8082 | /* The enable command enables the specified breakpoints (or all defined | |
8083 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 8084 | in stopping the inferior. */ |
c906108c | 8085 | |
c906108c | 8086 | static void |
fba45db2 | 8087 | enable_command (char *args, int from_tty) |
c906108c | 8088 | { |
52f0bd74 | 8089 | struct breakpoint *bpt; |
c906108c SS |
8090 | if (args == 0) |
8091 | ALL_BREAKPOINTS (bpt) | |
8092 | switch (bpt->type) | |
c5aa993b JM |
8093 | { |
8094 | case bp_none: | |
8a3fe4f8 | 8095 | warning (_("attempted to enable apparently deleted breakpoint #%d?"), |
53a5351d | 8096 | bpt->number); |
c5aa993b JM |
8097 | continue; |
8098 | case bp_breakpoint: | |
1042e4c0 | 8099 | case bp_tracepoint: |
ce78b96d | 8100 | case bp_catchpoint: |
c5aa993b JM |
8101 | case bp_hardware_breakpoint: |
8102 | case bp_watchpoint: | |
8103 | case bp_hardware_watchpoint: | |
8104 | case bp_read_watchpoint: | |
8105 | case bp_access_watchpoint: | |
8106 | enable_breakpoint (bpt); | |
8107 | default: | |
8108 | continue; | |
8109 | } | |
0d381245 VP |
8110 | else if (strchr (args, '.')) |
8111 | { | |
8112 | struct bp_location *loc = find_location_by_number (args); | |
8113 | if (loc) | |
8114 | loc->enabled = 1; | |
b60e7edf | 8115 | update_global_location_list (1); |
0d381245 | 8116 | } |
c906108c SS |
8117 | else |
8118 | map_breakpoint_numbers (args, enable_breakpoint); | |
8119 | } | |
8120 | ||
8121 | static void | |
fba45db2 | 8122 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c | 8123 | { |
b5de0fa7 | 8124 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
8125 | } |
8126 | ||
c906108c | 8127 | static void |
fba45db2 | 8128 | enable_once_command (char *args, int from_tty) |
c906108c SS |
8129 | { |
8130 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
8131 | } | |
8132 | ||
8133 | static void | |
fba45db2 | 8134 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c | 8135 | { |
b5de0fa7 | 8136 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
8137 | } |
8138 | ||
c906108c | 8139 | static void |
fba45db2 | 8140 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
8141 | { |
8142 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
8143 | } | |
8144 | \f | |
fa8d40ab JJ |
8145 | static void |
8146 | set_breakpoint_cmd (char *args, int from_tty) | |
8147 | { | |
8148 | } | |
8149 | ||
8150 | static void | |
8151 | show_breakpoint_cmd (char *args, int from_tty) | |
8152 | { | |
8153 | } | |
8154 | ||
c906108c SS |
8155 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
8156 | ||
8157 | struct symtabs_and_lines | |
fba45db2 | 8158 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
8159 | { |
8160 | struct symtabs_and_lines sals; | |
8161 | if (string == 0) | |
8a3fe4f8 | 8162 | error (_("Empty line specification.")); |
c906108c SS |
8163 | if (default_breakpoint_valid) |
8164 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
8165 | default_breakpoint_symtab, |
8166 | default_breakpoint_line, | |
68219205 | 8167 | (char ***) NULL, NULL); |
c906108c SS |
8168 | else |
8169 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 8170 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c | 8171 | if (*string) |
8a3fe4f8 | 8172 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
8173 | return sals; |
8174 | } | |
8181d85f DJ |
8175 | |
8176 | /* Create and insert a raw software breakpoint at PC. Return an | |
8177 | identifier, which should be used to remove the breakpoint later. | |
8178 | In general, places which call this should be using something on the | |
8179 | breakpoint chain instead; this function should be eliminated | |
8180 | someday. */ | |
8181 | ||
8182 | void * | |
8183 | deprecated_insert_raw_breakpoint (CORE_ADDR pc) | |
8184 | { | |
8185 | struct bp_target_info *bp_tgt; | |
8186 | ||
8187 | bp_tgt = xmalloc (sizeof (struct bp_target_info)); | |
8188 | memset (bp_tgt, 0, sizeof (struct bp_target_info)); | |
8189 | ||
8190 | bp_tgt->placed_address = pc; | |
8191 | if (target_insert_breakpoint (bp_tgt) != 0) | |
8192 | { | |
8193 | /* Could not insert the breakpoint. */ | |
8194 | xfree (bp_tgt); | |
8195 | return NULL; | |
8196 | } | |
8197 | ||
8198 | return bp_tgt; | |
8199 | } | |
8200 | ||
8201 | /* Remove a breakpoint BP inserted by deprecated_insert_raw_breakpoint. */ | |
8202 | ||
8203 | int | |
8204 | deprecated_remove_raw_breakpoint (void *bp) | |
8205 | { | |
8206 | struct bp_target_info *bp_tgt = bp; | |
8207 | int ret; | |
8208 | ||
8209 | ret = target_remove_breakpoint (bp_tgt); | |
8210 | xfree (bp_tgt); | |
8211 | ||
8212 | return ret; | |
8213 | } | |
8214 | ||
8215 | /* One (or perhaps two) breakpoints used for software single stepping. */ | |
8216 | ||
8217 | static void *single_step_breakpoints[2]; | |
8218 | ||
8219 | /* Create and insert a breakpoint for software single step. */ | |
8220 | ||
8221 | void | |
8222 | insert_single_step_breakpoint (CORE_ADDR next_pc) | |
8223 | { | |
8224 | void **bpt_p; | |
8225 | ||
8226 | if (single_step_breakpoints[0] == NULL) | |
8227 | bpt_p = &single_step_breakpoints[0]; | |
8228 | else | |
8229 | { | |
8230 | gdb_assert (single_step_breakpoints[1] == NULL); | |
8231 | bpt_p = &single_step_breakpoints[1]; | |
8232 | } | |
8233 | ||
8234 | /* NOTE drow/2006-04-11: A future improvement to this function would be | |
8235 | to only create the breakpoints once, and actually put them on the | |
8236 | breakpoint chain. That would let us use set_raw_breakpoint. We could | |
8237 | adjust the addresses each time they were needed. Doing this requires | |
8238 | corresponding changes elsewhere where single step breakpoints are | |
8239 | handled, however. So, for now, we use this. */ | |
8240 | ||
8241 | *bpt_p = deprecated_insert_raw_breakpoint (next_pc); | |
8242 | if (*bpt_p == NULL) | |
1893a4c0 | 8243 | error (_("Could not insert single-step breakpoint at 0x%s"), |
8181d85f DJ |
8244 | paddr_nz (next_pc)); |
8245 | } | |
8246 | ||
8247 | /* Remove and delete any breakpoints used for software single step. */ | |
8248 | ||
8249 | void | |
8250 | remove_single_step_breakpoints (void) | |
8251 | { | |
8252 | gdb_assert (single_step_breakpoints[0] != NULL); | |
8253 | ||
8254 | /* See insert_single_step_breakpoint for more about this deprecated | |
8255 | call. */ | |
8256 | deprecated_remove_raw_breakpoint (single_step_breakpoints[0]); | |
8257 | single_step_breakpoints[0] = NULL; | |
8258 | ||
8259 | if (single_step_breakpoints[1] != NULL) | |
8260 | { | |
8261 | deprecated_remove_raw_breakpoint (single_step_breakpoints[1]); | |
8262 | single_step_breakpoints[1] = NULL; | |
8263 | } | |
8264 | } | |
8265 | ||
1aafd4da UW |
8266 | /* Check whether a software single-step breakpoint is inserted at PC. */ |
8267 | ||
8268 | static int | |
8269 | single_step_breakpoint_inserted_here_p (CORE_ADDR pc) | |
8270 | { | |
8271 | int i; | |
8272 | ||
8273 | for (i = 0; i < 2; i++) | |
8274 | { | |
8275 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
8276 | if (bp_tgt && bp_tgt->placed_address == pc) | |
8277 | return 1; | |
8278 | } | |
8279 | ||
8280 | return 0; | |
8281 | } | |
8282 | ||
1042e4c0 SS |
8283 | /* Tracepoint-specific operations. */ |
8284 | ||
8285 | /* Set tracepoint count to NUM. */ | |
8286 | static void | |
8287 | set_tracepoint_count (int num) | |
8288 | { | |
8289 | tracepoint_count = num; | |
4fa62494 | 8290 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
8291 | } |
8292 | ||
8293 | void | |
8294 | trace_command (char *arg, int from_tty) | |
8295 | { | |
8296 | break_command_really (arg, | |
8297 | NULL, 0, 1 /* parse arg */, | |
8298 | 0 /* tempflag */, 0 /* hardwareflag */, | |
8299 | 1 /* traceflag */, | |
8300 | 0 /* Ignore count */, | |
8301 | pending_break_support, | |
8302 | NULL, | |
8303 | from_tty, | |
8304 | 1 /* enabled */); | |
8305 | set_tracepoint_count (breakpoint_count); | |
8306 | } | |
8307 | ||
8308 | /* Print information on tracepoint number TPNUM_EXP, or all if | |
8309 | omitted. */ | |
8310 | ||
8311 | static void | |
8312 | tracepoints_info (char *tpnum_exp, int from_tty) | |
8313 | { | |
8314 | struct breakpoint *b; | |
8315 | int tps_to_list = 0; | |
8316 | ||
8317 | /* In the no-arguments case, say "No tracepoints" if none found. */ | |
8318 | if (tpnum_exp == 0) | |
8319 | { | |
8320 | ALL_TRACEPOINTS (b) | |
8321 | { | |
8322 | if (b->number >= 0) | |
8323 | { | |
8324 | tps_to_list = 1; | |
8325 | break; | |
8326 | } | |
8327 | } | |
8328 | if (!tps_to_list) | |
8329 | { | |
8330 | ui_out_message (uiout, 0, "No tracepoints.\n"); | |
8331 | return; | |
8332 | } | |
8333 | } | |
8334 | ||
8335 | /* Otherwise be the same as "info break". */ | |
8336 | breakpoints_info (tpnum_exp, from_tty); | |
8337 | } | |
8338 | ||
8339 | /* The 'enable trace' command enables tracepoints. | |
8340 | Not supported by all targets. */ | |
8341 | static void | |
8342 | enable_trace_command (char *args, int from_tty) | |
8343 | { | |
8344 | enable_command (args, from_tty); | |
8345 | } | |
8346 | ||
8347 | /* The 'disable trace' command disables tracepoints. | |
8348 | Not supported by all targets. */ | |
8349 | static void | |
8350 | disable_trace_command (char *args, int from_tty) | |
8351 | { | |
8352 | disable_command (args, from_tty); | |
8353 | } | |
8354 | ||
8355 | /* Remove a tracepoint (or all if no argument) */ | |
8356 | static void | |
8357 | delete_trace_command (char *arg, int from_tty) | |
8358 | { | |
8359 | struct breakpoint *b, *temp; | |
8360 | ||
8361 | dont_repeat (); | |
8362 | ||
8363 | if (arg == 0) | |
8364 | { | |
8365 | int breaks_to_delete = 0; | |
8366 | ||
8367 | /* Delete all breakpoints if no argument. | |
8368 | Do not delete internal or call-dummy breakpoints, these | |
8369 | have to be deleted with an explicit breakpoint number argument. */ | |
8370 | ALL_TRACEPOINTS (b) | |
8371 | { | |
8372 | if (b->number >= 0) | |
8373 | { | |
8374 | breaks_to_delete = 1; | |
8375 | break; | |
8376 | } | |
8377 | } | |
8378 | ||
8379 | /* Ask user only if there are some breakpoints to delete. */ | |
8380 | if (!from_tty | |
8381 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
8382 | { | |
8383 | ALL_BREAKPOINTS_SAFE (b, temp) | |
8384 | { | |
059fb39f PM |
8385 | if (b->type == bp_tracepoint |
8386 | && b->number >= 0) | |
1042e4c0 SS |
8387 | delete_breakpoint (b); |
8388 | } | |
8389 | } | |
8390 | } | |
8391 | else | |
8392 | map_breakpoint_numbers (arg, delete_breakpoint); | |
8393 | } | |
8394 | ||
8395 | /* Set passcount for tracepoint. | |
8396 | ||
8397 | First command argument is passcount, second is tracepoint number. | |
8398 | If tracepoint number omitted, apply to most recently defined. | |
8399 | Also accepts special argument "all". */ | |
8400 | ||
8401 | static void | |
8402 | trace_pass_command (char *args, int from_tty) | |
8403 | { | |
8404 | struct breakpoint *t1 = (struct breakpoint *) -1, *t2; | |
8405 | unsigned int count; | |
8406 | int all = 0; | |
8407 | ||
8408 | if (args == 0 || *args == 0) | |
8409 | error (_("passcount command requires an argument (count + optional TP num)")); | |
8410 | ||
8411 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ | |
8412 | ||
8413 | while (*args && isspace ((int) *args)) | |
8414 | args++; | |
8415 | ||
8416 | if (*args && strncasecmp (args, "all", 3) == 0) | |
8417 | { | |
8418 | args += 3; /* Skip special argument "all". */ | |
8419 | all = 1; | |
8420 | if (*args) | |
8421 | error (_("Junk at end of arguments.")); | |
8422 | } | |
8423 | else | |
8424 | t1 = get_tracepoint_by_number (&args, 1, 1); | |
8425 | ||
8426 | do | |
8427 | { | |
8428 | if (t1) | |
8429 | { | |
8430 | ALL_TRACEPOINTS (t2) | |
8431 | if (t1 == (struct breakpoint *) -1 || t1 == t2) | |
8432 | { | |
8433 | t2->pass_count = count; | |
8434 | observer_notify_tracepoint_modified (t2->number); | |
8435 | if (from_tty) | |
8436 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
8437 | t2->number, count); | |
8438 | } | |
8439 | if (! all && *args) | |
8440 | t1 = get_tracepoint_by_number (&args, 1, 0); | |
8441 | } | |
8442 | } | |
8443 | while (*args); | |
8444 | } | |
8445 | ||
8446 | struct breakpoint * | |
8447 | get_tracepoint (int num) | |
8448 | { | |
8449 | struct breakpoint *t; | |
8450 | ||
8451 | ALL_TRACEPOINTS (t) | |
8452 | if (t->number == num) | |
8453 | return t; | |
8454 | ||
8455 | return NULL; | |
8456 | } | |
8457 | ||
8458 | /* Utility: parse a tracepoint number and look it up in the list. | |
8459 | If MULTI_P is true, there might be a range of tracepoints in ARG. | |
8460 | if OPTIONAL_P is true, then if the argument is missing, the most | |
8461 | recent tracepoint (tracepoint_count) is returned. */ | |
8462 | struct breakpoint * | |
8463 | get_tracepoint_by_number (char **arg, int multi_p, int optional_p) | |
8464 | { | |
8465 | extern int tracepoint_count; | |
8466 | struct breakpoint *t; | |
8467 | int tpnum; | |
8468 | char *instring = arg == NULL ? NULL : *arg; | |
8469 | ||
8470 | if (arg == NULL || *arg == NULL || ! **arg) | |
8471 | { | |
8472 | if (optional_p) | |
8473 | tpnum = tracepoint_count; | |
8474 | else | |
8475 | error_no_arg (_("tracepoint number")); | |
8476 | } | |
8477 | else | |
8478 | tpnum = multi_p ? get_number_or_range (arg) : get_number (arg); | |
8479 | ||
8480 | if (tpnum <= 0) | |
8481 | { | |
8482 | if (instring && *instring) | |
8483 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
8484 | instring); | |
8485 | else | |
8486 | printf_filtered (_("Tracepoint argument missing and no previous tracepoint\n")); | |
8487 | return NULL; | |
8488 | } | |
8489 | ||
8490 | ALL_TRACEPOINTS (t) | |
8491 | if (t->number == tpnum) | |
8492 | { | |
8493 | return t; | |
8494 | } | |
8495 | ||
8496 | /* FIXME: if we are in the middle of a range we don't want to give | |
8497 | a message. The current interface to get_number_or_range doesn't | |
8498 | allow us to discover this. */ | |
8499 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); | |
8500 | return NULL; | |
8501 | } | |
8502 | ||
8503 | /* save-tracepoints command */ | |
8504 | static void | |
8505 | tracepoint_save_command (char *args, int from_tty) | |
8506 | { | |
8507 | struct breakpoint *tp; | |
8508 | int any_tp = 0; | |
8509 | struct action_line *line; | |
8510 | FILE *fp; | |
8511 | char *i1 = " ", *i2 = " "; | |
8512 | char *indent, *actionline, *pathname; | |
8513 | char tmp[40]; | |
8514 | struct cleanup *cleanup; | |
8515 | ||
8516 | if (args == 0 || *args == 0) | |
8517 | error (_("Argument required (file name in which to save tracepoints)")); | |
8518 | ||
8519 | /* See if we have anything to save. */ | |
8520 | ALL_TRACEPOINTS (tp) | |
8521 | { | |
8522 | any_tp = 1; | |
8523 | break; | |
8524 | } | |
8525 | if (!any_tp) | |
8526 | { | |
8527 | warning (_("save-tracepoints: no tracepoints to save.")); | |
8528 | return; | |
8529 | } | |
8530 | ||
8531 | pathname = tilde_expand (args); | |
8532 | cleanup = make_cleanup (xfree, pathname); | |
059fb39f PM |
8533 | fp = fopen (pathname, "w"); |
8534 | if (!fp) | |
1042e4c0 SS |
8535 | error (_("Unable to open file '%s' for saving tracepoints (%s)"), |
8536 | args, safe_strerror (errno)); | |
8537 | make_cleanup_fclose (fp); | |
8538 | ||
8539 | ALL_TRACEPOINTS (tp) | |
8540 | { | |
8541 | if (tp->addr_string) | |
8542 | fprintf (fp, "trace %s\n", tp->addr_string); | |
8543 | else | |
8544 | { | |
8545 | sprintf_vma (tmp, tp->loc->address); | |
8546 | fprintf (fp, "trace *0x%s\n", tmp); | |
8547 | } | |
8548 | ||
8549 | if (tp->pass_count) | |
8550 | fprintf (fp, " passcount %d\n", tp->pass_count); | |
8551 | ||
8552 | if (tp->actions) | |
8553 | { | |
8554 | fprintf (fp, " actions\n"); | |
8555 | indent = i1; | |
8556 | for (line = tp->actions; line; line = line->next) | |
8557 | { | |
8558 | struct cmd_list_element *cmd; | |
8559 | ||
8560 | QUIT; /* allow user to bail out with ^C */ | |
8561 | actionline = line->action; | |
8562 | while (isspace ((int) *actionline)) | |
8563 | actionline++; | |
8564 | ||
8565 | fprintf (fp, "%s%s\n", indent, actionline); | |
8566 | if (*actionline != '#') /* skip for comment lines */ | |
8567 | { | |
8568 | cmd = lookup_cmd (&actionline, cmdlist, "", -1, 1); | |
8569 | if (cmd == 0) | |
8570 | error (_("Bad action list item: %s"), actionline); | |
8571 | if (cmd_cfunc_eq (cmd, while_stepping_pseudocommand)) | |
8572 | indent = i2; | |
8573 | else if (cmd_cfunc_eq (cmd, end_actions_pseudocommand)) | |
8574 | indent = i1; | |
8575 | } | |
8576 | } | |
8577 | } | |
8578 | } | |
8579 | do_cleanups (cleanup); | |
8580 | if (from_tty) | |
8581 | printf_filtered (_("Tracepoints saved to file '%s'.\n"), args); | |
8582 | return; | |
8583 | } | |
8584 | ||
8585 | /* Create a vector of all tracepoints. */ | |
8586 | ||
8587 | VEC(breakpoint_p) * | |
8588 | all_tracepoints () | |
8589 | { | |
8590 | VEC(breakpoint_p) *tp_vec = 0; | |
8591 | struct breakpoint *tp; | |
8592 | ||
8593 | ALL_TRACEPOINTS (tp) | |
8594 | { | |
8595 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
8596 | } | |
8597 | ||
8598 | return tp_vec; | |
8599 | } | |
8600 | ||
c906108c | 8601 | \f |
31e2b00f AS |
8602 | /* This help string is used for the break, hbreak, tbreak and thbreak commands. |
8603 | It is defined as a macro to prevent duplication. | |
8604 | COMMAND should be a string constant containing the name of the command. */ | |
8605 | #define BREAK_ARGS_HELP(command) \ | |
8606 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
8607 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
8608 | If a line number is specified, break at start of code for that line.\n\ | |
8609 | If a function is specified, break at start of code for that function.\n\ | |
8610 | If an address is specified, break at that exact address.\n\ | |
8611 | With no LOCATION, uses current execution address of selected stack frame.\n\ | |
8612 | This is useful for breaking on return to a stack frame.\n\ | |
8613 | \n\ | |
8614 | THREADNUM is the number from \"info threads\".\n\ | |
8615 | CONDITION is a boolean expression.\n\ | |
8616 | \n\ | |
8617 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
8618 | \n\ | |
8619 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
8620 | ||
44feb3ce TT |
8621 | /* List of subcommands for "catch". */ |
8622 | static struct cmd_list_element *catch_cmdlist; | |
8623 | ||
8624 | /* List of subcommands for "tcatch". */ | |
8625 | static struct cmd_list_element *tcatch_cmdlist; | |
8626 | ||
8627 | /* Like add_cmd, but add the command to both the "catch" and "tcatch" | |
8628 | lists, and pass some additional user data to the command function. */ | |
8629 | static void | |
8630 | add_catch_command (char *name, char *docstring, | |
8631 | void (*sfunc) (char *args, int from_tty, | |
8632 | struct cmd_list_element *command), | |
8633 | void *user_data_catch, | |
8634 | void *user_data_tcatch) | |
8635 | { | |
8636 | struct cmd_list_element *command; | |
8637 | ||
8638 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
8639 | &catch_cmdlist); | |
8640 | set_cmd_sfunc (command, sfunc); | |
8641 | set_cmd_context (command, user_data_catch); | |
8642 | ||
8643 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
8644 | &tcatch_cmdlist); | |
8645 | set_cmd_sfunc (command, sfunc); | |
8646 | set_cmd_context (command, user_data_tcatch); | |
8647 | } | |
8648 | ||
c906108c | 8649 | void |
fba45db2 | 8650 | _initialize_breakpoint (void) |
c906108c | 8651 | { |
fa8d40ab JJ |
8652 | static struct cmd_list_element *breakpoint_set_cmdlist; |
8653 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
c906108c SS |
8654 | struct cmd_list_element *c; |
8655 | ||
84acb35a | 8656 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
84acb35a | 8657 | |
c906108c SS |
8658 | breakpoint_chain = 0; |
8659 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
8660 | before a breakpoint is set. */ | |
8661 | breakpoint_count = 0; | |
8662 | ||
1042e4c0 SS |
8663 | tracepoint_count = 0; |
8664 | ||
1bedd215 AC |
8665 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
8666 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
8667 | Usage is `ignore N COUNT'.")); | |
c906108c | 8668 | if (xdb_commands) |
c5aa993b | 8669 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 8670 | |
1bedd215 AC |
8671 | add_com ("commands", class_breakpoint, commands_command, _("\ |
8672 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
8673 | Give breakpoint number as argument after \"commands\".\n\ |
8674 | With no argument, the targeted breakpoint is the last one set.\n\ | |
8675 | The commands themselves follow starting on the next line.\n\ | |
8676 | Type a line containing \"end\" to indicate the end of them.\n\ | |
8677 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 8678 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 8679 | |
1bedd215 AC |
8680 | add_com ("condition", class_breakpoint, condition_command, _("\ |
8681 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 8682 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 8683 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 8684 | |
1bedd215 | 8685 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 8686 | Set a temporary breakpoint.\n\ |
c906108c SS |
8687 | Like \"break\" except the breakpoint is only temporary,\n\ |
8688 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
8689 | by using \"enable delete\" on the breakpoint number.\n\ |
8690 | \n" | |
8691 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 8692 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 8693 | |
1bedd215 | 8694 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
31e2b00f | 8695 | Set a hardware assisted breakpoint.\n\ |
c906108c | 8696 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
8697 | some target hardware may not have this support.\n\ |
8698 | \n" | |
8699 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 8700 | set_cmd_completer (c, location_completer); |
c906108c | 8701 | |
1bedd215 | 8702 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 8703 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 8704 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
8705 | so it will be deleted when hit.\n\ |
8706 | \n" | |
8707 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 8708 | set_cmd_completer (c, location_completer); |
c906108c | 8709 | |
1bedd215 AC |
8710 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
8711 | Enable some breakpoints.\n\ | |
c906108c SS |
8712 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8713 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8714 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8715 | With a subcommand you can enable temporarily."), |
c906108c SS |
8716 | &enablelist, "enable ", 1, &cmdlist); |
8717 | if (xdb_commands) | |
1bedd215 AC |
8718 | add_com ("ab", class_breakpoint, enable_command, _("\ |
8719 | Enable some breakpoints.\n\ | |
c906108c SS |
8720 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8721 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8722 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8723 | With a subcommand you can enable temporarily.")); |
c906108c SS |
8724 | |
8725 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
8726 | ||
1bedd215 AC |
8727 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
8728 | Enable some breakpoints.\n\ | |
c906108c SS |
8729 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8730 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8731 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 8732 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 8733 | |
1a966eab AC |
8734 | add_cmd ("once", no_class, enable_once_command, _("\ |
8735 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8736 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8737 | &enablebreaklist); |
8738 | ||
1a966eab AC |
8739 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8740 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8741 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8742 | &enablebreaklist); |
8743 | ||
1a966eab AC |
8744 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8745 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8746 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8747 | &enablelist); |
8748 | ||
1a966eab AC |
8749 | add_cmd ("once", no_class, enable_once_command, _("\ |
8750 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8751 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8752 | &enablelist); |
8753 | ||
1bedd215 AC |
8754 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
8755 | Disable some breakpoints.\n\ | |
c906108c SS |
8756 | Arguments are breakpoint numbers with spaces in between.\n\ |
8757 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 8758 | A disabled breakpoint is not forgotten, but has no effect until reenabled."), |
c906108c SS |
8759 | &disablelist, "disable ", 1, &cmdlist); |
8760 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
8761 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
8762 | if (xdb_commands) | |
1bedd215 AC |
8763 | add_com ("sb", class_breakpoint, disable_command, _("\ |
8764 | Disable some breakpoints.\n\ | |
c906108c SS |
8765 | Arguments are breakpoint numbers with spaces in between.\n\ |
8766 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 8767 | A disabled breakpoint is not forgotten, but has no effect until reenabled.")); |
c906108c | 8768 | |
1a966eab AC |
8769 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
8770 | Disable some breakpoints.\n\ | |
c906108c SS |
8771 | Arguments are breakpoint numbers with spaces in between.\n\ |
8772 | To disable all breakpoints, give no argument.\n\ | |
8773 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
1a966eab | 8774 | This command may be abbreviated \"disable\"."), |
c906108c SS |
8775 | &disablelist); |
8776 | ||
1bedd215 AC |
8777 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
8778 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
8779 | Arguments are breakpoint numbers with spaces in between.\n\ |
8780 | To delete all breakpoints, give no argument.\n\ | |
8781 | \n\ | |
8782 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 8783 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
8784 | &deletelist, "delete ", 1, &cmdlist); |
8785 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 8786 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 8787 | if (xdb_commands) |
1bedd215 AC |
8788 | add_com ("db", class_breakpoint, delete_command, _("\ |
8789 | Delete some breakpoints.\n\ | |
c906108c | 8790 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 8791 | To delete all breakpoints, give no argument.\n")); |
c906108c | 8792 | |
1a966eab AC |
8793 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
8794 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
8795 | Arguments are breakpoint numbers with spaces in between.\n\ |
8796 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 8797 | This command may be abbreviated \"delete\"."), |
c906108c SS |
8798 | &deletelist); |
8799 | ||
1bedd215 AC |
8800 | add_com ("clear", class_breakpoint, clear_command, _("\ |
8801 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
8802 | Argument may be line number, function name, or \"*\" and an address.\n\ |
8803 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
8804 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
8805 | If an address is specified, breakpoints at that address are cleared.\n\ |
8806 | \n\ | |
8807 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
8808 | is executing in.\n\ |
8809 | \n\ | |
1bedd215 | 8810 | See also the \"delete\" command which clears breakpoints by number.")); |
c906108c | 8811 | |
1bedd215 | 8812 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
8813 | Set breakpoint at specified line or function.\n" |
8814 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 8815 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 8816 | |
c906108c SS |
8817 | add_com_alias ("b", "break", class_run, 1); |
8818 | add_com_alias ("br", "break", class_run, 1); | |
8819 | add_com_alias ("bre", "break", class_run, 1); | |
8820 | add_com_alias ("brea", "break", class_run, 1); | |
8821 | ||
7681d515 PM |
8822 | if (xdb_commands) |
8823 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
c906108c SS |
8824 | |
8825 | if (dbx_commands) | |
8826 | { | |
1bedd215 AC |
8827 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
8828 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
8829 | &stoplist, "stop ", 1, &cmdlist); |
8830 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 8831 | _("Break in function or address."), &stoplist); |
c5aa993b | 8832 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 8833 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
8834 | add_com ("status", class_info, breakpoints_info, _("\ |
8835 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8836 | The \"Type\" column indicates one of:\n\ |
8837 | \tbreakpoint - normal breakpoint\n\ | |
8838 | \twatchpoint - watchpoint\n\ | |
8839 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8840 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8841 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8842 | address and file/line number respectively.\n\ |
8843 | \n\ | |
8844 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8845 | are set to the address of the last breakpoint listed unless the command\n\ |
8846 | is prefixed with \"server \".\n\n\ | |
c906108c | 8847 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8848 | breakpoint set.")); |
c906108c SS |
8849 | } |
8850 | ||
1bedd215 AC |
8851 | add_info ("breakpoints", breakpoints_info, _("\ |
8852 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8853 | The \"Type\" column indicates one of:\n\ |
8854 | \tbreakpoint - normal breakpoint\n\ | |
8855 | \twatchpoint - watchpoint\n\ | |
8856 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8857 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8858 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8859 | address and file/line number respectively.\n\ |
8860 | \n\ | |
8861 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8862 | are set to the address of the last breakpoint listed unless the command\n\ |
8863 | is prefixed with \"server \".\n\n\ | |
c906108c | 8864 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8865 | breakpoint set.")); |
c906108c SS |
8866 | |
8867 | if (xdb_commands) | |
1bedd215 AC |
8868 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
8869 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8870 | The \"Type\" column indicates one of:\n\ |
8871 | \tbreakpoint - normal breakpoint\n\ | |
8872 | \twatchpoint - watchpoint\n\ | |
8873 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8874 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8875 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8876 | address and file/line number respectively.\n\ |
8877 | \n\ | |
8878 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8879 | are set to the address of the last breakpoint listed unless the command\n\ |
8880 | is prefixed with \"server \".\n\n\ | |
c906108c | 8881 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8882 | breakpoint set.")); |
c906108c | 8883 | |
1a966eab AC |
8884 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
8885 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8886 | The \"Type\" column indicates one of:\n\ |
8887 | \tbreakpoint - normal breakpoint\n\ | |
8888 | \twatchpoint - watchpoint\n\ | |
8889 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
8890 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
8891 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
8892 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
8893 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
8894 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
8895 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
8896 | address and file/line number respectively.\n\ |
8897 | \n\ | |
8898 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8899 | are set to the address of the last breakpoint listed unless the command\n\ |
8900 | is prefixed with \"server \".\n\n\ | |
c906108c | 8901 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 8902 | breakpoint set."), |
c906108c SS |
8903 | &maintenanceinfolist); |
8904 | ||
44feb3ce TT |
8905 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
8906 | Set catchpoints to catch events."), | |
8907 | &catch_cmdlist, "catch ", | |
8908 | 0/*allow-unknown*/, &cmdlist); | |
8909 | ||
8910 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
8911 | Set temporary catchpoints to catch events."), | |
8912 | &tcatch_cmdlist, "tcatch ", | |
8913 | 0/*allow-unknown*/, &cmdlist); | |
8914 | ||
8915 | /* Add catch and tcatch sub-commands. */ | |
8916 | add_catch_command ("catch", _("\ | |
8917 | Catch an exception, when caught.\n\ | |
8918 | With an argument, catch only exceptions with the given name."), | |
8919 | catch_catch_command, | |
8920 | CATCH_PERMANENT, | |
8921 | CATCH_TEMPORARY); | |
8922 | add_catch_command ("throw", _("\ | |
8923 | Catch an exception, when thrown.\n\ | |
8924 | With an argument, catch only exceptions with the given name."), | |
8925 | catch_throw_command, | |
8926 | CATCH_PERMANENT, | |
8927 | CATCH_TEMPORARY); | |
8928 | add_catch_command ("fork", _("Catch calls to fork."), | |
8929 | catch_fork_command_1, | |
8930 | (void *) (uintptr_t) catch_fork_permanent, | |
8931 | (void *) (uintptr_t) catch_fork_temporary); | |
8932 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
8933 | catch_fork_command_1, | |
8934 | (void *) (uintptr_t) catch_vfork_permanent, | |
8935 | (void *) (uintptr_t) catch_vfork_temporary); | |
8936 | add_catch_command ("exec", _("Catch calls to exec."), | |
8937 | catch_exec_command_1, | |
8938 | CATCH_PERMANENT, | |
8939 | CATCH_TEMPORARY); | |
44feb3ce TT |
8940 | add_catch_command ("exception", _("\ |
8941 | Catch Ada exceptions, when raised.\n\ | |
8942 | With an argument, catch only exceptions with the given name."), | |
8943 | catch_ada_exception_command, | |
8944 | CATCH_PERMANENT, | |
8945 | CATCH_TEMPORARY); | |
8946 | add_catch_command ("assert", _("\ | |
8947 | Catch failed Ada assertions, when raised.\n\ | |
8948 | With an argument, catch only exceptions with the given name."), | |
8949 | catch_assert_command, | |
8950 | CATCH_PERMANENT, | |
8951 | CATCH_TEMPORARY); | |
c5aa993b | 8952 | |
1bedd215 AC |
8953 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
8954 | Set a watchpoint for an expression.\n\ | |
c906108c | 8955 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8956 | an expression changes.")); |
65d12d83 | 8957 | set_cmd_completer (c, expression_completer); |
c906108c | 8958 | |
1bedd215 AC |
8959 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
8960 | Set a read watchpoint for an expression.\n\ | |
c906108c | 8961 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8962 | an expression is read.")); |
65d12d83 | 8963 | set_cmd_completer (c, expression_completer); |
c906108c | 8964 | |
1bedd215 AC |
8965 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
8966 | Set a watchpoint for an expression.\n\ | |
c906108c | 8967 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8968 | an expression is either read or written.")); |
65d12d83 | 8969 | set_cmd_completer (c, expression_completer); |
c906108c SS |
8970 | |
8971 | add_info ("watchpoints", breakpoints_info, | |
1bedd215 | 8972 | _("Synonym for ``info breakpoints''.")); |
c906108c SS |
8973 | |
8974 | ||
920d2a44 AC |
8975 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
8976 | respond to changes - contrary to the description. */ | |
85c07804 AC |
8977 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
8978 | &can_use_hw_watchpoints, _("\ | |
8979 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
8980 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
8981 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
8982 | such is available. (However, any hardware watchpoints that were\n\ | |
8983 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
8984 | hardware.)"), |
8985 | NULL, | |
920d2a44 | 8986 | show_can_use_hw_watchpoints, |
85c07804 | 8987 | &setlist, &showlist); |
c906108c SS |
8988 | |
8989 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 8990 | |
1042e4c0 SS |
8991 | /* Tracepoint manipulation commands. */ |
8992 | ||
8993 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
8994 | Set a tracepoint at specified line or function.\n\ | |
8995 | \n" | |
8996 | BREAK_ARGS_HELP ("trace") "\n\ | |
8997 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
8998 | set_cmd_completer (c, location_completer); | |
8999 | ||
9000 | add_com_alias ("tp", "trace", class_alias, 0); | |
9001 | add_com_alias ("tr", "trace", class_alias, 1); | |
9002 | add_com_alias ("tra", "trace", class_alias, 1); | |
9003 | add_com_alias ("trac", "trace", class_alias, 1); | |
9004 | ||
9005 | add_info ("tracepoints", tracepoints_info, _("\ | |
9006 | Status of tracepoints, or tracepoint number NUMBER.\n\ | |
9007 | Convenience variable \"$tpnum\" contains the number of the\n\ | |
9008 | last tracepoint set.")); | |
9009 | ||
9010 | add_info_alias ("tp", "tracepoints", 1); | |
9011 | ||
9012 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
9013 | Delete specified tracepoints.\n\ | |
9014 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
9015 | No argument means delete all tracepoints."), | |
9016 | &deletelist); | |
9017 | ||
9018 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
9019 | Disable specified tracepoints.\n\ | |
9020 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
9021 | No argument means disable all tracepoints."), | |
9022 | &disablelist); | |
9023 | deprecate_cmd (c, "disable"); | |
9024 | ||
9025 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
9026 | Enable specified tracepoints.\n\ | |
9027 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
9028 | No argument means enable all tracepoints."), | |
9029 | &enablelist); | |
9030 | deprecate_cmd (c, "enable"); | |
9031 | ||
9032 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
9033 | Set the passcount for a tracepoint.\n\ | |
9034 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
9035 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
9036 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
9037 | ||
9038 | c = add_com ("save-tracepoints", class_trace, tracepoint_save_command, _("\ | |
9039 | Save current tracepoint definitions as a script.\n\ | |
9040 | Use the 'source' command in another debug session to restore them.")); | |
9041 | set_cmd_completer (c, filename_completer); | |
9042 | ||
1bedd215 | 9043 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
9044 | Breakpoint specific settings\n\ |
9045 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 9046 | pending breakpoint behavior"), |
fa8d40ab JJ |
9047 | &breakpoint_set_cmdlist, "set breakpoint ", |
9048 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 9049 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
9050 | Breakpoint specific settings\n\ |
9051 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 9052 | pending breakpoint behavior"), |
fa8d40ab JJ |
9053 | &breakpoint_show_cmdlist, "show breakpoint ", |
9054 | 0/*allow-unknown*/, &showlist); | |
9055 | ||
7915a72c AC |
9056 | add_setshow_auto_boolean_cmd ("pending", no_class, |
9057 | &pending_break_support, _("\ | |
9058 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
9059 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
9060 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
9061 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
9062 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 9063 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 9064 | NULL, |
920d2a44 | 9065 | show_pending_break_support, |
6e1d7d6c AC |
9066 | &breakpoint_set_cmdlist, |
9067 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
9068 | |
9069 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
9070 | |
9071 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
9072 | &automatic_hardware_breakpoints, _("\ | |
9073 | Set automatic usage of hardware breakpoints."), _("\ | |
9074 | Show automatic usage of hardware breakpoints."), _("\ | |
9075 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
9076 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
9077 | a warning will be emitted for such breakpoints."), | |
9078 | NULL, | |
9079 | show_automatic_hardware_breakpoints, | |
9080 | &breakpoint_set_cmdlist, | |
9081 | &breakpoint_show_cmdlist); | |
74960c60 | 9082 | |
33e5cbd6 PA |
9083 | add_setshow_enum_cmd ("always-inserted", class_support, |
9084 | always_inserted_enums, &always_inserted_mode, _("\ | |
74960c60 VP |
9085 | Set mode for inserting breakpoints."), _("\ |
9086 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
9087 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
9088 | resumed, and removed when execution stops. When this mode is on,\n\ | |
9089 | breakpoints are inserted immediately and removed only when the user\n\ | |
9090 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
9091 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
9092 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
9093 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
9094 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
74960c60 VP |
9095 | NULL, |
9096 | &show_always_inserted_mode, | |
9097 | &breakpoint_set_cmdlist, | |
9098 | &breakpoint_show_cmdlist); | |
765dc015 VP |
9099 | |
9100 | automatic_hardware_breakpoints = 1; | |
f3b1572e PA |
9101 | |
9102 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
c906108c | 9103 | } |