Commit | Line | Data |
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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
6aba47ca | 3 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
9b254dd1 | 4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, |
0fb0cc75 | 5 | 2008, 2009 Free Software Foundation, Inc. |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
23 | #include <ctype.h> | |
776592bf | 24 | #include "hashtab.h" |
c906108c SS |
25 | #include "symtab.h" |
26 | #include "frame.h" | |
27 | #include "breakpoint.h" | |
28 | #include "gdbtypes.h" | |
29 | #include "expression.h" | |
30 | #include "gdbcore.h" | |
31 | #include "gdbcmd.h" | |
32 | #include "value.h" | |
33 | #include "command.h" | |
34 | #include "inferior.h" | |
35 | #include "gdbthread.h" | |
36 | #include "target.h" | |
37 | #include "language.h" | |
38 | #include "gdb_string.h" | |
39 | #include "demangle.h" | |
40 | #include "annotate.h" | |
41 | #include "symfile.h" | |
42 | #include "objfiles.h" | |
0378c332 | 43 | #include "source.h" |
c5f0f3d0 | 44 | #include "linespec.h" |
c94fdfd0 | 45 | #include "completer.h" |
5b7f31a4 | 46 | #include "gdb.h" |
8b93c638 | 47 | #include "ui-out.h" |
e1507482 | 48 | #include "cli/cli-script.h" |
0225421b | 49 | #include "gdb_assert.h" |
fe898f56 | 50 | #include "block.h" |
a77053c2 | 51 | #include "solib.h" |
84acb35a JJ |
52 | #include "solist.h" |
53 | #include "observer.h" | |
60250e8b | 54 | #include "exceptions.h" |
765dc015 | 55 | #include "memattr.h" |
f7f9143b | 56 | #include "ada-lang.h" |
d1aa2f50 | 57 | #include "top.h" |
fa4727a6 | 58 | #include "wrapper.h" |
79a45b7d | 59 | #include "valprint.h" |
c906108c | 60 | |
034dad6f | 61 | #include "mi/mi-common.h" |
104c1213 | 62 | |
44feb3ce TT |
63 | /* Arguments to pass as context to some catch command handlers. */ |
64 | #define CATCH_PERMANENT ((void *) (uintptr_t) 0) | |
65 | #define CATCH_TEMPORARY ((void *) (uintptr_t) 1) | |
c906108c | 66 | |
44feb3ce | 67 | /* Prototypes for local functions. */ |
c906108c | 68 | |
a14ed312 | 69 | static void enable_delete_command (char *, int); |
c906108c | 70 | |
a14ed312 | 71 | static void enable_delete_breakpoint (struct breakpoint *); |
c906108c | 72 | |
a14ed312 | 73 | static void enable_once_command (char *, int); |
c906108c | 74 | |
a14ed312 | 75 | static void enable_once_breakpoint (struct breakpoint *); |
c906108c | 76 | |
a14ed312 | 77 | static void disable_command (char *, int); |
c906108c | 78 | |
a14ed312 | 79 | static void enable_command (char *, int); |
c906108c | 80 | |
a14ed312 | 81 | static void map_breakpoint_numbers (char *, void (*)(struct breakpoint *)); |
c906108c | 82 | |
a14ed312 | 83 | static void ignore_command (char *, int); |
c906108c | 84 | |
4efb68b1 | 85 | static int breakpoint_re_set_one (void *); |
c906108c | 86 | |
a14ed312 | 87 | static void clear_command (char *, int); |
c906108c | 88 | |
a14ed312 | 89 | static void catch_command (char *, int); |
c906108c | 90 | |
a14ed312 | 91 | static void watch_command (char *, int); |
c906108c | 92 | |
a14ed312 | 93 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 94 | |
98deb0da | 95 | static void break_command_1 (char *, int, int); |
c906108c | 96 | |
a14ed312 | 97 | static void mention (struct breakpoint *); |
c906108c | 98 | |
4d28f7a8 | 99 | struct breakpoint *set_raw_breakpoint (struct symtab_and_line, enum bptype); |
c906108c | 100 | |
9f60f21b | 101 | static void check_duplicates (struct breakpoint *); |
c906108c | 102 | |
76897487 KB |
103 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
104 | ||
88f7da05 KB |
105 | static CORE_ADDR adjust_breakpoint_address (CORE_ADDR bpaddr, |
106 | enum bptype bptype); | |
76897487 | 107 | |
714835d5 | 108 | static void describe_other_breakpoints (CORE_ADDR, struct obj_section *, int); |
c906108c | 109 | |
a14ed312 | 110 | static void breakpoints_info (char *, int); |
c906108c | 111 | |
a14ed312 | 112 | static void breakpoint_1 (int, int); |
c906108c | 113 | |
89f9893c | 114 | static bpstat bpstat_alloc (const struct bp_location *, bpstat); |
c906108c | 115 | |
4efb68b1 | 116 | static int breakpoint_cond_eval (void *); |
c906108c | 117 | |
4efb68b1 | 118 | static void cleanup_executing_breakpoints (void *); |
c906108c | 119 | |
a14ed312 | 120 | static void commands_command (char *, int); |
c906108c | 121 | |
a14ed312 | 122 | static void condition_command (char *, int); |
c906108c | 123 | |
a14ed312 | 124 | static int get_number_trailer (char **, int); |
c906108c | 125 | |
a14ed312 | 126 | void set_breakpoint_count (int); |
c906108c | 127 | |
c5aa993b JM |
128 | typedef enum |
129 | { | |
130 | mark_inserted, | |
131 | mark_uninserted | |
132 | } | |
133 | insertion_state_t; | |
c906108c | 134 | |
0bde7532 | 135 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
c906108c | 136 | |
a14ed312 | 137 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
138 | |
139 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 140 | |
4efb68b1 | 141 | static int watchpoint_check (void *); |
c906108c | 142 | |
a14ed312 | 143 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 144 | |
1900040c MS |
145 | static void create_overlay_event_breakpoint (char *); |
146 | ||
a14ed312 | 147 | static int hw_breakpoint_used_count (void); |
c906108c | 148 | |
a14ed312 | 149 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 150 | |
a14ed312 | 151 | static void hbreak_command (char *, int); |
c906108c | 152 | |
a14ed312 | 153 | static void thbreak_command (char *, int); |
c906108c | 154 | |
a14ed312 | 155 | static void watch_command_1 (char *, int, int); |
c906108c | 156 | |
a14ed312 | 157 | static void rwatch_command (char *, int); |
c906108c | 158 | |
a14ed312 | 159 | static void awatch_command (char *, int); |
c906108c | 160 | |
a14ed312 | 161 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 162 | |
a14ed312 | 163 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 164 | |
a14ed312 | 165 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 166 | |
a14ed312 | 167 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 168 | |
a14ed312 | 169 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 170 | |
a14ed312 | 171 | static char *ep_parse_optional_filename (char **arg); |
7a292a7a | 172 | |
d85310f7 MS |
173 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
174 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 175 | |
a14ed312 | 176 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 177 | |
a14ed312 | 178 | static void ep_skip_leading_whitespace (char **s); |
7a292a7a | 179 | |
1aafd4da UW |
180 | static int single_step_breakpoint_inserted_here_p (CORE_ADDR pc); |
181 | ||
fe3f5fa8 VP |
182 | static void free_bp_location (struct bp_location *loc); |
183 | ||
39d61571 | 184 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 185 | |
b60e7edf | 186 | static void update_global_location_list (int); |
a5606eee | 187 | |
b60e7edf | 188 | static void update_global_location_list_nothrow (int); |
74960c60 VP |
189 | |
190 | static int is_hardware_watchpoint (struct breakpoint *bpt); | |
191 | ||
192 | static void insert_breakpoint_locations (void); | |
a5606eee | 193 | |
f3b1572e PA |
194 | /* Flag indicating that a command has proceeded the inferior past the |
195 | current breakpoint. */ | |
196 | ||
197 | static int breakpoint_proceeded; | |
198 | ||
2cec12e5 AR |
199 | static const char * |
200 | bpdisp_text (enum bpdisp disp) | |
201 | { | |
202 | /* NOTE: the following values are a part of MI protocol and represent | |
203 | values of 'disp' field returned when inferior stops at a breakpoint. */ | |
204 | static char *bpdisps[] = {"del", "dstp", "dis", "keep"}; | |
205 | return bpdisps[(int) disp]; | |
206 | } | |
c906108c | 207 | |
2cec12e5 | 208 | /* Prototypes for exported functions. */ |
c906108c SS |
209 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
210 | if such is available. */ | |
211 | static int can_use_hw_watchpoints; | |
212 | ||
920d2a44 AC |
213 | static void |
214 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
215 | struct cmd_list_element *c, | |
216 | const char *value) | |
217 | { | |
218 | fprintf_filtered (file, _("\ | |
219 | Debugger's willingness to use watchpoint hardware is %s.\n"), | |
220 | value); | |
221 | } | |
222 | ||
fa8d40ab JJ |
223 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
224 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
225 | for unrecognized breakpoint locations. | |
226 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ | |
227 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
228 | static void |
229 | show_pending_break_support (struct ui_file *file, int from_tty, | |
230 | struct cmd_list_element *c, | |
231 | const char *value) | |
232 | { | |
233 | fprintf_filtered (file, _("\ | |
234 | Debugger's behavior regarding pending breakpoints is %s.\n"), | |
235 | value); | |
236 | } | |
fa8d40ab | 237 | |
765dc015 VP |
238 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
239 | set with "break" but falling in read-only memory. | |
240 | If 0, gdb will warn about such breakpoints, but won't automatically | |
241 | use hardware breakpoints. */ | |
242 | static int automatic_hardware_breakpoints; | |
243 | static void | |
244 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
245 | struct cmd_list_element *c, | |
246 | const char *value) | |
247 | { | |
248 | fprintf_filtered (file, _("\ | |
249 | Automatic usage of hardware breakpoints is %s.\n"), | |
250 | value); | |
251 | } | |
252 | ||
33e5cbd6 PA |
253 | /* If on, gdb will keep breakpoints inserted even as inferior is |
254 | stopped, and immediately insert any new breakpoints. If off, gdb | |
255 | will insert breakpoints into inferior only when resuming it, and | |
256 | will remove breakpoints upon stop. If auto, GDB will behave as ON | |
257 | if in non-stop mode, and as OFF if all-stop mode.*/ | |
258 | ||
259 | static const char always_inserted_auto[] = "auto"; | |
260 | static const char always_inserted_on[] = "on"; | |
261 | static const char always_inserted_off[] = "off"; | |
262 | static const char *always_inserted_enums[] = { | |
263 | always_inserted_auto, | |
264 | always_inserted_off, | |
265 | always_inserted_on, | |
266 | NULL | |
267 | }; | |
268 | static const char *always_inserted_mode = always_inserted_auto; | |
269 | static void | |
74960c60 | 270 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 271 | struct cmd_list_element *c, const char *value) |
74960c60 | 272 | { |
33e5cbd6 PA |
273 | if (always_inserted_mode == always_inserted_auto) |
274 | fprintf_filtered (file, _("\ | |
275 | Always inserted breakpoint mode is %s (currently %s).\n"), | |
276 | value, | |
277 | breakpoints_always_inserted_mode () ? "on" : "off"); | |
278 | else | |
279 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), value); | |
74960c60 VP |
280 | } |
281 | ||
33e5cbd6 PA |
282 | int |
283 | breakpoints_always_inserted_mode (void) | |
284 | { | |
285 | return (always_inserted_mode == always_inserted_on | |
286 | || (always_inserted_mode == always_inserted_auto && non_stop)); | |
287 | } | |
765dc015 | 288 | |
a14ed312 | 289 | void _initialize_breakpoint (void); |
c906108c | 290 | |
c906108c SS |
291 | /* Are we executing breakpoint commands? */ |
292 | static int executing_breakpoint_commands; | |
293 | ||
c02f5703 MS |
294 | /* Are overlay event breakpoints enabled? */ |
295 | static int overlay_events_enabled; | |
296 | ||
c906108c SS |
297 | /* Walk the following statement or block through all breakpoints. |
298 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
299 | breakpoint. */ | |
300 | ||
5c44784c | 301 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 302 | |
5c44784c JM |
303 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
304 | for (B = breakpoint_chain; \ | |
305 | B ? (TMP=B->next, 1): 0; \ | |
306 | B = TMP) | |
c906108c | 307 | |
7cc221ef DJ |
308 | /* Similar iterators for the low-level breakpoints. */ |
309 | ||
0d381245 | 310 | #define ALL_BP_LOCATIONS(B) for (B = bp_location_chain; B; B = B->global_next) |
7cc221ef DJ |
311 | |
312 | #define ALL_BP_LOCATIONS_SAFE(B,TMP) \ | |
313 | for (B = bp_location_chain; \ | |
0d381245 | 314 | B ? (TMP=B->global_next, 1): 0; \ |
7cc221ef DJ |
315 | B = TMP) |
316 | ||
7cc221ef | 317 | /* Chains of all breakpoints defined. */ |
c906108c SS |
318 | |
319 | struct breakpoint *breakpoint_chain; | |
320 | ||
7cc221ef DJ |
321 | struct bp_location *bp_location_chain; |
322 | ||
20874c92 VP |
323 | /* The locations that no longer correspond to any breakpoint, |
324 | unlinked from bp_location_chain, but for which a hit | |
325 | may still be reported by a target. */ | |
326 | VEC(bp_location_p) *moribund_locations = NULL; | |
327 | ||
c906108c SS |
328 | /* Number of last breakpoint made. */ |
329 | ||
330 | int breakpoint_count; | |
331 | ||
468d015d JJ |
332 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
333 | static int | |
334 | breakpoint_enabled (struct breakpoint *b) | |
335 | { | |
0d381245 | 336 | return (b->enable_state == bp_enabled); |
468d015d JJ |
337 | } |
338 | ||
c906108c SS |
339 | /* Set breakpoint count to NUM. */ |
340 | ||
341 | void | |
fba45db2 | 342 | set_breakpoint_count (int num) |
c906108c SS |
343 | { |
344 | breakpoint_count = num; | |
345 | set_internalvar (lookup_internalvar ("bpnum"), | |
8b9b9e1a | 346 | value_from_longest (builtin_type_int32, (LONGEST) num)); |
c906108c SS |
347 | } |
348 | ||
349 | /* Used in run_command to zero the hit count when a new run starts. */ | |
350 | ||
351 | void | |
fba45db2 | 352 | clear_breakpoint_hit_counts (void) |
c906108c SS |
353 | { |
354 | struct breakpoint *b; | |
355 | ||
356 | ALL_BREAKPOINTS (b) | |
357 | b->hit_count = 0; | |
358 | } | |
359 | ||
360 | /* Default address, symtab and line to put a breakpoint at | |
361 | for "break" command with no arg. | |
362 | if default_breakpoint_valid is zero, the other three are | |
363 | not valid, and "break" with no arg is an error. | |
364 | ||
365 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
366 | ||
367 | int default_breakpoint_valid; | |
368 | CORE_ADDR default_breakpoint_address; | |
369 | struct symtab *default_breakpoint_symtab; | |
370 | int default_breakpoint_line; | |
371 | \f | |
372 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
373 | Advance *PP after the string and any trailing whitespace. | |
374 | ||
375 | Currently the string can either be a number or "$" followed by the name | |
376 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c | 377 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
40c03ae8 EZ |
378 | |
379 | If the string is a NULL pointer, that denotes the last breakpoint. | |
5c44784c JM |
380 | |
381 | TRAILER is a character which can be found after the number; most | |
382 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 383 | static int |
fba45db2 | 384 | get_number_trailer (char **pp, int trailer) |
c906108c | 385 | { |
5c44784c | 386 | int retval = 0; /* default */ |
c906108c SS |
387 | char *p = *pp; |
388 | ||
389 | if (p == NULL) | |
390 | /* Empty line means refer to the last breakpoint. */ | |
391 | return breakpoint_count; | |
392 | else if (*p == '$') | |
393 | { | |
394 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 395 | to pass to lookup_internalvar(). */ |
c906108c SS |
396 | char *varname; |
397 | char *start = ++p; | |
278cd55f | 398 | struct value *val; |
c906108c SS |
399 | |
400 | while (isalnum (*p) || *p == '_') | |
401 | p++; | |
402 | varname = (char *) alloca (p - start + 1); | |
403 | strncpy (varname, start, p - start); | |
404 | varname[p - start] = '\0'; | |
405 | val = value_of_internalvar (lookup_internalvar (varname)); | |
df407dfe | 406 | if (TYPE_CODE (value_type (val)) == TYPE_CODE_INT) |
5c44784c JM |
407 | retval = (int) value_as_long (val); |
408 | else | |
409 | { | |
a3f17187 | 410 | printf_filtered (_("Convenience variable must have integer value.\n")); |
5c44784c JM |
411 | retval = 0; |
412 | } | |
c906108c SS |
413 | } |
414 | else | |
415 | { | |
416 | if (*p == '-') | |
417 | ++p; | |
418 | while (*p >= '0' && *p <= '9') | |
419 | ++p; | |
420 | if (p == *pp) | |
421 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
422 | { |
423 | /* Skip non-numeric token */ | |
424 | while (*p && !isspace((int) *p)) | |
425 | ++p; | |
426 | /* Return zero, which caller must interpret as error. */ | |
427 | retval = 0; | |
428 | } | |
429 | else | |
430 | retval = atoi (*pp); | |
431 | } | |
432 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
433 | { | |
434 | /* Trailing junk: return 0 and let caller print error msg. */ | |
435 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
436 | ++p; | |
437 | retval = 0; | |
c906108c | 438 | } |
c906108c SS |
439 | while (isspace (*p)) |
440 | p++; | |
441 | *pp = p; | |
442 | return retval; | |
443 | } | |
5c44784c | 444 | |
11cf8741 | 445 | |
5c44784c JM |
446 | /* Like get_number_trailer, but don't allow a trailer. */ |
447 | int | |
fba45db2 | 448 | get_number (char **pp) |
5c44784c JM |
449 | { |
450 | return get_number_trailer (pp, '\0'); | |
451 | } | |
452 | ||
453 | /* Parse a number or a range. | |
454 | * A number will be of the form handled by get_number. | |
455 | * A range will be of the form <number1> - <number2>, and | |
456 | * will represent all the integers between number1 and number2, | |
457 | * inclusive. | |
458 | * | |
459 | * While processing a range, this fuction is called iteratively; | |
460 | * At each call it will return the next value in the range. | |
461 | * | |
462 | * At the beginning of parsing a range, the char pointer PP will | |
463 | * be advanced past <number1> and left pointing at the '-' token. | |
464 | * Subsequent calls will not advance the pointer until the range | |
465 | * is completed. The call that completes the range will advance | |
466 | * pointer PP past <number2>. | |
467 | */ | |
468 | ||
469 | int | |
fba45db2 | 470 | get_number_or_range (char **pp) |
5c44784c JM |
471 | { |
472 | static int last_retval, end_value; | |
473 | static char *end_ptr; | |
474 | static int in_range = 0; | |
475 | ||
476 | if (**pp != '-') | |
477 | { | |
478 | /* Default case: pp is pointing either to a solo number, | |
479 | or to the first number of a range. */ | |
480 | last_retval = get_number_trailer (pp, '-'); | |
481 | if (**pp == '-') | |
482 | { | |
483 | char **temp; | |
484 | ||
485 | /* This is the start of a range (<number1> - <number2>). | |
486 | Skip the '-', parse and remember the second number, | |
487 | and also remember the end of the final token. */ | |
488 | ||
489 | temp = &end_ptr; | |
490 | end_ptr = *pp + 1; | |
491 | while (isspace ((int) *end_ptr)) | |
492 | end_ptr++; /* skip white space */ | |
493 | end_value = get_number (temp); | |
494 | if (end_value < last_retval) | |
495 | { | |
8a3fe4f8 | 496 | error (_("inverted range")); |
5c44784c JM |
497 | } |
498 | else if (end_value == last_retval) | |
499 | { | |
500 | /* degenerate range (number1 == number2). Advance the | |
501 | token pointer so that the range will be treated as a | |
502 | single number. */ | |
503 | *pp = end_ptr; | |
504 | } | |
505 | else | |
506 | in_range = 1; | |
507 | } | |
508 | } | |
509 | else if (! in_range) | |
8a3fe4f8 | 510 | error (_("negative value")); |
5c44784c JM |
511 | else |
512 | { | |
513 | /* pp points to the '-' that betokens a range. All | |
514 | number-parsing has already been done. Return the next | |
515 | integer value (one greater than the saved previous value). | |
516 | Do not advance the token pointer 'pp' until the end of range | |
517 | is reached. */ | |
518 | ||
519 | if (++last_retval == end_value) | |
520 | { | |
521 | /* End of range reached; advance token pointer. */ | |
522 | *pp = end_ptr; | |
523 | in_range = 0; | |
524 | } | |
525 | } | |
526 | return last_retval; | |
527 | } | |
528 | ||
529 | ||
c906108c SS |
530 | \f |
531 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
532 | ||
533 | static void | |
fba45db2 | 534 | condition_command (char *arg, int from_tty) |
c906108c | 535 | { |
52f0bd74 | 536 | struct breakpoint *b; |
c906108c | 537 | char *p; |
52f0bd74 | 538 | int bnum; |
c906108c SS |
539 | |
540 | if (arg == 0) | |
e2e0b3e5 | 541 | error_no_arg (_("breakpoint number")); |
c906108c SS |
542 | |
543 | p = arg; | |
544 | bnum = get_number (&p); | |
5c44784c | 545 | if (bnum == 0) |
8a3fe4f8 | 546 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
547 | |
548 | ALL_BREAKPOINTS (b) | |
549 | if (b->number == bnum) | |
2f069f6f JB |
550 | { |
551 | struct bp_location *loc = b->loc; | |
552 | for (; loc; loc = loc->next) | |
553 | { | |
554 | if (loc->cond) | |
555 | { | |
556 | xfree (loc->cond); | |
557 | loc->cond = 0; | |
558 | } | |
559 | } | |
560 | if (b->cond_string != NULL) | |
561 | xfree (b->cond_string); | |
c906108c | 562 | |
2f069f6f JB |
563 | if (*p == 0) |
564 | { | |
565 | b->cond_string = NULL; | |
566 | if (from_tty) | |
567 | printf_filtered (_("Breakpoint %d now unconditional.\n"), bnum); | |
568 | } | |
569 | else | |
570 | { | |
571 | arg = p; | |
572 | /* I don't know if it matters whether this is the string the user | |
573 | typed in or the decompiled expression. */ | |
574 | b->cond_string = savestring (arg, strlen (arg)); | |
575 | b->condition_not_parsed = 0; | |
576 | for (loc = b->loc; loc; loc = loc->next) | |
577 | { | |
578 | arg = p; | |
579 | loc->cond = | |
580 | parse_exp_1 (&arg, block_for_pc (loc->address), 0); | |
581 | if (*arg) | |
582 | error (_("Junk at end of expression")); | |
583 | } | |
584 | } | |
585 | breakpoints_changed (); | |
383f836e | 586 | observer_notify_breakpoint_modified (b->number); |
2f069f6f JB |
587 | return; |
588 | } | |
c906108c | 589 | |
8a3fe4f8 | 590 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
591 | } |
592 | ||
c906108c | 593 | static void |
fba45db2 | 594 | commands_command (char *arg, int from_tty) |
c906108c | 595 | { |
52f0bd74 | 596 | struct breakpoint *b; |
c906108c | 597 | char *p; |
52f0bd74 | 598 | int bnum; |
c906108c SS |
599 | struct command_line *l; |
600 | ||
601 | /* If we allowed this, we would have problems with when to | |
602 | free the storage, if we change the commands currently | |
603 | being read from. */ | |
604 | ||
605 | if (executing_breakpoint_commands) | |
8a3fe4f8 | 606 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); |
c906108c SS |
607 | |
608 | p = arg; | |
609 | bnum = get_number (&p); | |
5c44784c | 610 | |
c906108c | 611 | if (p && *p) |
8a3fe4f8 | 612 | error (_("Unexpected extra arguments following breakpoint number.")); |
c5aa993b | 613 | |
c906108c SS |
614 | ALL_BREAKPOINTS (b) |
615 | if (b->number == bnum) | |
9ebf4acf AC |
616 | { |
617 | char *tmpbuf = xstrprintf ("Type commands for when breakpoint %d is hit, one per line.", | |
618 | bnum); | |
619 | struct cleanup *cleanups = make_cleanup (xfree, tmpbuf); | |
311a4e6b | 620 | l = read_command_lines (tmpbuf, from_tty, 1); |
9ebf4acf AC |
621 | do_cleanups (cleanups); |
622 | free_command_lines (&b->commands); | |
623 | b->commands = l; | |
624 | breakpoints_changed (); | |
383f836e | 625 | observer_notify_breakpoint_modified (b->number); |
9ebf4acf | 626 | return; |
c5aa993b | 627 | } |
8a3fe4f8 | 628 | error (_("No breakpoint number %d."), bnum); |
c906108c | 629 | } |
40c03ae8 EZ |
630 | |
631 | /* Like commands_command, but instead of reading the commands from | |
632 | input stream, takes them from an already parsed command structure. | |
633 | ||
634 | This is used by cli-script.c to DTRT with breakpoint commands | |
635 | that are part of if and while bodies. */ | |
636 | enum command_control_type | |
637 | commands_from_control_command (char *arg, struct command_line *cmd) | |
638 | { | |
639 | struct breakpoint *b; | |
640 | char *p; | |
641 | int bnum; | |
642 | ||
643 | /* If we allowed this, we would have problems with when to | |
644 | free the storage, if we change the commands currently | |
645 | being read from. */ | |
646 | ||
647 | if (executing_breakpoint_commands) | |
648 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); | |
649 | ||
650 | /* An empty string for the breakpoint number means the last | |
651 | breakpoint, but get_number expects a NULL pointer. */ | |
652 | if (arg && !*arg) | |
653 | p = NULL; | |
654 | else | |
655 | p = arg; | |
656 | bnum = get_number (&p); | |
657 | ||
658 | if (p && *p) | |
659 | error (_("Unexpected extra arguments following breakpoint number.")); | |
660 | ||
661 | ALL_BREAKPOINTS (b) | |
662 | if (b->number == bnum) | |
663 | { | |
664 | free_command_lines (&b->commands); | |
665 | if (cmd->body_count != 1) | |
666 | error (_("Invalid \"commands\" block structure.")); | |
667 | /* We need to copy the commands because if/while will free the | |
668 | list after it finishes execution. */ | |
669 | b->commands = copy_command_lines (cmd->body_list[0]); | |
670 | breakpoints_changed (); | |
383f836e | 671 | observer_notify_breakpoint_modified (b->number); |
40c03ae8 | 672 | return simple_control; |
2f069f6f | 673 | } |
40c03ae8 EZ |
674 | error (_("No breakpoint number %d."), bnum); |
675 | } | |
c906108c | 676 | \f |
8defab1a DJ |
677 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
678 | by replacing any memory breakpoints with their shadowed contents. */ | |
c906108c | 679 | |
8defab1a DJ |
680 | void |
681 | breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr, LONGEST len) | |
c906108c | 682 | { |
8defab1a | 683 | struct bp_location *b; |
c906108c SS |
684 | CORE_ADDR bp_addr = 0; |
685 | int bp_size = 0; | |
8defab1a | 686 | int bptoffset = 0; |
c5aa993b | 687 | |
ffce0d52 | 688 | ALL_BP_LOCATIONS (b) |
c5aa993b | 689 | { |
ffce0d52 | 690 | if (b->owner->type == bp_none) |
8a3fe4f8 | 691 | warning (_("reading through apparently deleted breakpoint #%d?"), |
ffce0d52 DJ |
692 | b->owner->number); |
693 | ||
694 | if (b->loc_type != bp_loc_software_breakpoint) | |
c5aa993b | 695 | continue; |
ffce0d52 | 696 | if (!b->inserted) |
c5aa993b JM |
697 | continue; |
698 | /* Addresses and length of the part of the breakpoint that | |
699 | we need to copy. */ | |
8181d85f DJ |
700 | bp_addr = b->target_info.placed_address; |
701 | bp_size = b->target_info.shadow_len; | |
c5aa993b | 702 | if (bp_size == 0) |
8181d85f | 703 | /* bp isn't valid, or doesn't shadow memory. */ |
c5aa993b | 704 | continue; |
8defab1a | 705 | |
c5aa993b JM |
706 | if (bp_addr + bp_size <= memaddr) |
707 | /* The breakpoint is entirely before the chunk of memory we | |
708 | are reading. */ | |
709 | continue; | |
8defab1a | 710 | |
c5aa993b JM |
711 | if (bp_addr >= memaddr + len) |
712 | /* The breakpoint is entirely after the chunk of memory we are | |
713 | reading. */ | |
714 | continue; | |
c5aa993b | 715 | |
8defab1a DJ |
716 | /* Offset within shadow_contents. */ |
717 | if (bp_addr < memaddr) | |
718 | { | |
719 | /* Only copy the second part of the breakpoint. */ | |
720 | bp_size -= memaddr - bp_addr; | |
721 | bptoffset = memaddr - bp_addr; | |
722 | bp_addr = memaddr; | |
723 | } | |
c5aa993b | 724 | |
8defab1a DJ |
725 | if (bp_addr + bp_size > memaddr + len) |
726 | { | |
727 | /* Only copy the first part of the breakpoint. */ | |
728 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
729 | } | |
c5aa993b | 730 | |
8defab1a DJ |
731 | memcpy (buf + bp_addr - memaddr, |
732 | b->target_info.shadow_contents + bptoffset, bp_size); | |
c5aa993b | 733 | } |
c906108c | 734 | } |
c906108c | 735 | \f |
c5aa993b | 736 | |
687595f9 | 737 | /* A wrapper function for inserting catchpoints. */ |
9cbc821d | 738 | static void |
687595f9 DJ |
739 | insert_catchpoint (struct ui_out *uo, void *args) |
740 | { | |
741 | struct breakpoint *b = (struct breakpoint *) args; | |
742 | int val = -1; | |
743 | ||
fe798b75 JB |
744 | gdb_assert (b->type == bp_catchpoint); |
745 | gdb_assert (b->ops != NULL && b->ops->insert != NULL); | |
746 | ||
747 | b->ops->insert (b); | |
687595f9 DJ |
748 | } |
749 | ||
a5606eee VP |
750 | static int |
751 | is_hardware_watchpoint (struct breakpoint *bpt) | |
752 | { | |
753 | return (bpt->type == bp_hardware_watchpoint | |
754 | || bpt->type == bp_read_watchpoint | |
755 | || bpt->type == bp_access_watchpoint); | |
756 | } | |
7270d8f2 | 757 | |
fa4727a6 DJ |
758 | /* Find the current value of a watchpoint on EXP. Return the value in |
759 | *VALP and *RESULTP and the chain of intermediate and final values | |
760 | in *VAL_CHAIN. RESULTP and VAL_CHAIN may be NULL if the caller does | |
761 | not need them. | |
762 | ||
ccc57cf9 | 763 | If a memory error occurs while evaluating the expression, *RESULTP will |
fa4727a6 DJ |
764 | be set to NULL. *RESULTP may be a lazy value, if the result could |
765 | not be read from memory. It is used to determine whether a value | |
766 | is user-specified (we should watch the whole value) or intermediate | |
767 | (we should watch only the bit used to locate the final value). | |
768 | ||
769 | If the final value, or any intermediate value, could not be read | |
770 | from memory, *VALP will be set to NULL. *VAL_CHAIN will still be | |
771 | set to any referenced values. *VALP will never be a lazy value. | |
772 | This is the value which we store in struct breakpoint. | |
773 | ||
774 | If VAL_CHAIN is non-NULL, *VAL_CHAIN will be released from the | |
775 | value chain. The caller must free the values individually. If | |
776 | VAL_CHAIN is NULL, all generated values will be left on the value | |
777 | chain. */ | |
778 | ||
779 | static void | |
780 | fetch_watchpoint_value (struct expression *exp, struct value **valp, | |
781 | struct value **resultp, struct value **val_chain) | |
782 | { | |
783 | struct value *mark, *new_mark, *result; | |
ccc57cf9 | 784 | volatile struct gdb_exception ex; |
fa4727a6 DJ |
785 | |
786 | *valp = NULL; | |
787 | if (resultp) | |
788 | *resultp = NULL; | |
789 | if (val_chain) | |
790 | *val_chain = NULL; | |
791 | ||
792 | /* Evaluate the expression. */ | |
793 | mark = value_mark (); | |
794 | result = NULL; | |
ccc57cf9 PA |
795 | |
796 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
797 | { | |
798 | result = evaluate_expression (exp); | |
799 | } | |
800 | if (ex.reason < 0) | |
801 | { | |
802 | /* Ignore memory errors, we want watchpoints pointing at | |
803 | inaccessible memory to still be created; otherwise, throw the | |
804 | error to some higher catcher. */ | |
805 | switch (ex.error) | |
806 | { | |
807 | case MEMORY_ERROR: | |
808 | break; | |
809 | default: | |
810 | throw_exception (ex); | |
811 | break; | |
812 | } | |
813 | } | |
814 | ||
fa4727a6 DJ |
815 | new_mark = value_mark (); |
816 | if (mark == new_mark) | |
817 | return; | |
818 | if (resultp) | |
819 | *resultp = result; | |
820 | ||
821 | /* Make sure it's not lazy, so that after the target stops again we | |
822 | have a non-lazy previous value to compare with. */ | |
823 | if (result != NULL | |
824 | && (!value_lazy (result) || gdb_value_fetch_lazy (result))) | |
825 | *valp = result; | |
826 | ||
827 | if (val_chain) | |
828 | { | |
829 | /* Return the chain of intermediate values. We use this to | |
830 | decide which addresses to watch. */ | |
831 | *val_chain = new_mark; | |
832 | value_release_to_mark (mark); | |
833 | } | |
834 | } | |
835 | ||
567e1b4e JB |
836 | /* Assuming that B is a watchpoint: |
837 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 838 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
839 | - Evaluate the condition if there is one, and store the result |
840 | in b->loc->cond. | |
a5606eee VP |
841 | - Update the list of values that must be watched in B->loc. |
842 | ||
bfa149ac JB |
843 | If the watchpoint disposition is disp_del_at_next_stop, then do nothing. |
844 | If this is local watchpoint that is out of scope, delete it. */ | |
b40ce68a | 845 | static void |
a5606eee | 846 | update_watchpoint (struct breakpoint *b, int reparse) |
7270d8f2 | 847 | { |
a5606eee | 848 | int within_current_scope; |
a5606eee VP |
849 | struct frame_id saved_frame_id; |
850 | struct bp_location *loc; | |
851 | bpstat bs; | |
852 | ||
567e1b4e JB |
853 | /* We don't free locations. They are stored in bp_location_chain and |
854 | update_global_locations will eventually delete them and remove | |
855 | breakpoints if needed. */ | |
a5606eee VP |
856 | b->loc = NULL; |
857 | ||
858 | if (b->disposition == disp_del_at_next_stop) | |
859 | return; | |
860 | ||
861 | /* Save the current frame's ID so we can restore it after | |
862 | evaluating the watchpoint expression on its own frame. */ | |
863 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
864 | took a frame parameter, so that we didn't have to change the | |
865 | selected frame. */ | |
866 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
867 | ||
868 | /* Determine if the watchpoint is within scope. */ | |
869 | if (b->exp_valid_block == NULL) | |
870 | within_current_scope = 1; | |
871 | else | |
872 | { | |
873 | struct frame_info *fi; | |
874 | fi = frame_find_by_id (b->watchpoint_frame); | |
875 | within_current_scope = (fi != NULL); | |
876 | if (within_current_scope) | |
877 | select_frame (fi); | |
878 | } | |
879 | ||
880 | if (within_current_scope && reparse) | |
881 | { | |
882 | char *s; | |
883 | if (b->exp) | |
884 | { | |
885 | xfree (b->exp); | |
886 | b->exp = NULL; | |
887 | } | |
888 | s = b->exp_string; | |
889 | b->exp = parse_exp_1 (&s, b->exp_valid_block, 0); | |
890 | /* If the meaning of expression itself changed, the old value is | |
891 | no longer relevant. We don't want to report a watchpoint hit | |
892 | to the user when the old value and the new value may actually | |
893 | be completely different objects. */ | |
894 | value_free (b->val); | |
fa4727a6 DJ |
895 | b->val = NULL; |
896 | b->val_valid = 0; | |
a5606eee | 897 | } |
a5606eee VP |
898 | |
899 | /* If we failed to parse the expression, for example because | |
900 | it refers to a global variable in a not-yet-loaded shared library, | |
901 | don't try to insert watchpoint. We don't automatically delete | |
902 | such watchpoint, though, since failure to parse expression | |
903 | is different from out-of-scope watchpoint. */ | |
904 | if (within_current_scope && b->exp) | |
905 | { | |
fa4727a6 | 906 | struct value *val_chain, *v, *result, *next; |
a5606eee | 907 | |
fa4727a6 | 908 | fetch_watchpoint_value (b->exp, &v, &result, &val_chain); |
a5606eee | 909 | |
a5606eee VP |
910 | /* Avoid setting b->val if it's already set. The meaning of |
911 | b->val is 'the last value' user saw, and we should update | |
912 | it only if we reported that last value to user. As it | |
913 | happens, the code that reports it updates b->val directly. */ | |
fa4727a6 DJ |
914 | if (!b->val_valid) |
915 | { | |
916 | b->val = v; | |
917 | b->val_valid = 1; | |
918 | } | |
a5606eee | 919 | |
db2ad4c3 JK |
920 | /* Change the type of breakpoint between hardware assisted or an |
921 | ordinary watchpoint depending on the hardware support and free | |
922 | hardware slots. REPARSE is set when the inferior is started. */ | |
923 | if ((b->type == bp_watchpoint || b->type == bp_hardware_watchpoint) | |
924 | && reparse) | |
925 | { | |
ca2d49e8 | 926 | int i, mem_cnt, other_type_used; |
db2ad4c3 JK |
927 | |
928 | i = hw_watchpoint_used_count (bp_hardware_watchpoint, | |
929 | &other_type_used); | |
930 | mem_cnt = can_use_hardware_watchpoint (val_chain); | |
931 | ||
ca2d49e8 | 932 | if (!mem_cnt) |
db2ad4c3 JK |
933 | b->type = bp_watchpoint; |
934 | else | |
ca2d49e8 SL |
935 | { |
936 | int target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT | |
937 | (bp_hardware_watchpoint, i + mem_cnt, other_type_used); | |
938 | if (target_resources_ok <= 0) | |
939 | b->type = bp_watchpoint; | |
940 | else | |
941 | b->type = bp_hardware_watchpoint; | |
942 | } | |
db2ad4c3 JK |
943 | } |
944 | ||
a5606eee | 945 | /* Look at each value on the value chain. */ |
fa4727a6 | 946 | for (v = val_chain; v; v = next) |
a5606eee VP |
947 | { |
948 | /* If it's a memory location, and GDB actually needed | |
949 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
950 | must watch it. If the first value returned is |
951 | still lazy, that means an error occurred reading it; | |
952 | watch it anyway in case it becomes readable. */ | |
a5606eee | 953 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 954 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
955 | { |
956 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 957 | |
a5606eee VP |
958 | /* We only watch structs and arrays if user asked |
959 | for it explicitly, never if they just happen to | |
960 | appear in the middle of some value chain. */ | |
fa4727a6 | 961 | if (v == result |
a5606eee VP |
962 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
963 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
964 | { | |
965 | CORE_ADDR addr; | |
966 | int len, type; | |
967 | struct bp_location *loc, **tmp; | |
968 | ||
969 | addr = VALUE_ADDRESS (v) + value_offset (v); | |
970 | len = TYPE_LENGTH (value_type (v)); | |
971 | type = hw_write; | |
972 | if (b->type == bp_read_watchpoint) | |
973 | type = hw_read; | |
974 | else if (b->type == bp_access_watchpoint) | |
975 | type = hw_access; | |
976 | ||
39d61571 | 977 | loc = allocate_bp_location (b); |
a5606eee VP |
978 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
979 | ; | |
980 | *tmp = loc; | |
981 | loc->address = addr; | |
982 | loc->length = len; | |
983 | loc->watchpoint_type = type; | |
984 | } | |
985 | } | |
986 | ||
987 | next = value_next (v); | |
988 | if (v != b->val) | |
989 | value_free (v); | |
990 | } | |
991 | ||
2ec93238 MK |
992 | /* We just regenerated the list of breakpoint locations. |
993 | The new location does not have its condition field set to anything | |
994 | and therefore, we must always reparse the cond_string, independently | |
995 | of the value of the reparse flag. */ | |
996 | if (b->cond_string != NULL) | |
a5606eee VP |
997 | { |
998 | char *s = b->cond_string; | |
a5606eee VP |
999 | b->loc->cond = parse_exp_1 (&s, b->exp_valid_block, 0); |
1000 | } | |
1001 | } | |
1002 | else if (!within_current_scope) | |
7270d8f2 | 1003 | { |
a5606eee | 1004 | printf_filtered (_("\ |
567e1b4e | 1005 | Watchpoint %d deleted because the program has left the block \n\ |
a5606eee VP |
1006 | in which its expression is valid.\n"), |
1007 | b->number); | |
1008 | if (b->related_breakpoint) | |
1009 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1010 | b->disposition = disp_del_at_next_stop; | |
7270d8f2 | 1011 | } |
a5606eee VP |
1012 | |
1013 | /* Restore the selected frame. */ | |
1014 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1015 | } |
1016 | ||
a5606eee | 1017 | |
74960c60 VP |
1018 | /* Returns 1 iff breakpoint location should be |
1019 | inserted in the inferior. */ | |
1020 | static int | |
1021 | should_be_inserted (struct bp_location *bpt) | |
1022 | { | |
1023 | if (!breakpoint_enabled (bpt->owner)) | |
1024 | return 0; | |
1025 | ||
1026 | if (bpt->owner->disposition == disp_del_at_next_stop) | |
1027 | return 0; | |
1028 | ||
1029 | if (!bpt->enabled || bpt->shlib_disabled || bpt->duplicate) | |
1030 | return 0; | |
1031 | ||
1032 | return 1; | |
1033 | } | |
1034 | ||
879bfdc2 DJ |
1035 | /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint. |
1036 | Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS, | |
fa3a767f | 1037 | and HW_BREAKPOINT_ERROR are used to report problems. |
879bfdc2 DJ |
1038 | |
1039 | NOTE drow/2003-09-09: This routine could be broken down to an object-style | |
1040 | method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 1041 | static int |
879bfdc2 | 1042 | insert_bp_location (struct bp_location *bpt, |
26bb91f3 | 1043 | struct ui_file *tmp_error_stream, |
fa3a767f | 1044 | int *disabled_breaks, |
26bb91f3 | 1045 | int *hw_breakpoint_error) |
879bfdc2 DJ |
1046 | { |
1047 | int val = 0; | |
1048 | ||
74960c60 | 1049 | if (!should_be_inserted (bpt) || bpt->inserted) |
879bfdc2 DJ |
1050 | return 0; |
1051 | ||
8181d85f DJ |
1052 | /* Initialize the target-specific information. */ |
1053 | memset (&bpt->target_info, 0, sizeof (bpt->target_info)); | |
1054 | bpt->target_info.placed_address = bpt->address; | |
1055 | ||
879bfdc2 DJ |
1056 | if (bpt->loc_type == bp_loc_software_breakpoint |
1057 | || bpt->loc_type == bp_loc_hardware_breakpoint) | |
1058 | { | |
765dc015 VP |
1059 | if (bpt->owner->type != bp_hardware_breakpoint) |
1060 | { | |
1061 | /* If the explicitly specified breakpoint type | |
1062 | is not hardware breakpoint, check the memory map to see | |
1063 | if the breakpoint address is in read only memory or not. | |
1064 | Two important cases are: | |
1065 | - location type is not hardware breakpoint, memory | |
1066 | is readonly. We change the type of the location to | |
1067 | hardware breakpoint. | |
1068 | - location type is hardware breakpoint, memory is read-write. | |
1069 | This means we've previously made the location hardware one, but | |
1070 | then the memory map changed, so we undo. | |
1071 | ||
1072 | When breakpoints are removed, remove_breakpoints will | |
1073 | use location types we've just set here, the only possible | |
1074 | problem is that memory map has changed during running program, | |
1075 | but it's not going to work anyway with current gdb. */ | |
1076 | struct mem_region *mr | |
1077 | = lookup_mem_region (bpt->target_info.placed_address); | |
1078 | ||
1079 | if (mr) | |
1080 | { | |
1081 | if (automatic_hardware_breakpoints) | |
1082 | { | |
1083 | int changed = 0; | |
1084 | enum bp_loc_type new_type; | |
1085 | ||
1086 | if (mr->attrib.mode != MEM_RW) | |
1087 | new_type = bp_loc_hardware_breakpoint; | |
1088 | else | |
1089 | new_type = bp_loc_software_breakpoint; | |
1090 | ||
1091 | if (new_type != bpt->loc_type) | |
1092 | { | |
1093 | static int said = 0; | |
1094 | bpt->loc_type = new_type; | |
1095 | if (!said) | |
1096 | { | |
1097 | fprintf_filtered (gdb_stdout, _("\ | |
0767c96d | 1098 | Note: automatically using hardware breakpoints for read-only addresses.\n")); |
765dc015 VP |
1099 | said = 1; |
1100 | } | |
1101 | } | |
1102 | } | |
1103 | else if (bpt->loc_type == bp_loc_software_breakpoint | |
1104 | && mr->attrib.mode != MEM_RW) | |
1105 | warning (_("cannot set software breakpoint at readonly address %s"), | |
1106 | paddr (bpt->address)); | |
1107 | } | |
1108 | } | |
1109 | ||
879bfdc2 DJ |
1110 | /* First check to see if we have to handle an overlay. */ |
1111 | if (overlay_debugging == ovly_off | |
1112 | || bpt->section == NULL | |
1113 | || !(section_is_overlay (bpt->section))) | |
1114 | { | |
1115 | /* No overlay handling: just set the breakpoint. */ | |
1116 | ||
1117 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8181d85f | 1118 | val = target_insert_hw_breakpoint (&bpt->target_info); |
879bfdc2 | 1119 | else |
8181d85f | 1120 | val = target_insert_breakpoint (&bpt->target_info); |
879bfdc2 DJ |
1121 | } |
1122 | else | |
1123 | { | |
1124 | /* This breakpoint is in an overlay section. | |
1125 | Shall we set a breakpoint at the LMA? */ | |
1126 | if (!overlay_events_enabled) | |
1127 | { | |
1128 | /* Yes -- overlay event support is not active, | |
1129 | so we must try to set a breakpoint at the LMA. | |
1130 | This will not work for a hardware breakpoint. */ | |
1131 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8a3fe4f8 | 1132 | warning (_("hardware breakpoint %d not supported in overlay!"), |
879bfdc2 DJ |
1133 | bpt->owner->number); |
1134 | else | |
1135 | { | |
1136 | CORE_ADDR addr = overlay_unmapped_address (bpt->address, | |
1137 | bpt->section); | |
1138 | /* Set a software (trap) breakpoint at the LMA. */ | |
8181d85f DJ |
1139 | bpt->overlay_target_info = bpt->target_info; |
1140 | bpt->overlay_target_info.placed_address = addr; | |
1141 | val = target_insert_breakpoint (&bpt->overlay_target_info); | |
879bfdc2 | 1142 | if (val != 0) |
99361f52 DE |
1143 | fprintf_unfiltered (tmp_error_stream, |
1144 | "Overlay breakpoint %d failed: in ROM?\n", | |
879bfdc2 DJ |
1145 | bpt->owner->number); |
1146 | } | |
1147 | } | |
1148 | /* Shall we set a breakpoint at the VMA? */ | |
1149 | if (section_is_mapped (bpt->section)) | |
1150 | { | |
1151 | /* Yes. This overlay section is mapped into memory. */ | |
1152 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8181d85f | 1153 | val = target_insert_hw_breakpoint (&bpt->target_info); |
879bfdc2 | 1154 | else |
8181d85f | 1155 | val = target_insert_breakpoint (&bpt->target_info); |
879bfdc2 DJ |
1156 | } |
1157 | else | |
1158 | { | |
1159 | /* No. This breakpoint will not be inserted. | |
1160 | No error, but do not mark the bp as 'inserted'. */ | |
1161 | return 0; | |
1162 | } | |
1163 | } | |
1164 | ||
1165 | if (val) | |
1166 | { | |
1167 | /* Can't set the breakpoint. */ | |
f5c9a895 | 1168 | if (solib_name_from_address (bpt->address)) |
879bfdc2 DJ |
1169 | { |
1170 | /* See also: disable_breakpoints_in_shlibs. */ | |
1171 | val = 0; | |
0d381245 | 1172 | bpt->shlib_disabled = 1; |
879bfdc2 DJ |
1173 | if (!*disabled_breaks) |
1174 | { | |
1175 | fprintf_unfiltered (tmp_error_stream, | |
1176 | "Cannot insert breakpoint %d.\n", | |
1177 | bpt->owner->number); | |
1178 | fprintf_unfiltered (tmp_error_stream, | |
1179 | "Temporarily disabling shared library breakpoints:\n"); | |
1180 | } | |
1181 | *disabled_breaks = 1; | |
1182 | fprintf_unfiltered (tmp_error_stream, | |
1183 | "breakpoint #%d\n", bpt->owner->number); | |
1184 | } | |
1185 | else | |
879bfdc2 | 1186 | { |
879bfdc2 DJ |
1187 | if (bpt->loc_type == bp_loc_hardware_breakpoint) |
1188 | { | |
1189 | *hw_breakpoint_error = 1; | |
1190 | fprintf_unfiltered (tmp_error_stream, | |
1191 | "Cannot insert hardware breakpoint %d.\n", | |
1192 | bpt->owner->number); | |
1193 | } | |
1194 | else | |
1195 | { | |
1196 | fprintf_unfiltered (tmp_error_stream, | |
1197 | "Cannot insert breakpoint %d.\n", | |
1198 | bpt->owner->number); | |
1199 | fprintf_filtered (tmp_error_stream, | |
1200 | "Error accessing memory address "); | |
ed49a04f | 1201 | fputs_filtered (paddress (bpt->address), tmp_error_stream); |
879bfdc2 DJ |
1202 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1203 | safe_strerror (val)); | |
1204 | } | |
1205 | ||
1206 | } | |
1207 | } | |
1208 | else | |
1209 | bpt->inserted = 1; | |
1210 | ||
1211 | return val; | |
1212 | } | |
1213 | ||
1214 | else if (bpt->loc_type == bp_loc_hardware_watchpoint | |
1215 | /* NOTE drow/2003-09-08: This state only exists for removing | |
1216 | watchpoints. It's not clear that it's necessary... */ | |
1217 | && bpt->owner->disposition != disp_del_at_next_stop) | |
1218 | { | |
a5606eee VP |
1219 | val = target_insert_watchpoint (bpt->address, |
1220 | bpt->length, | |
1221 | bpt->watchpoint_type); | |
1222 | bpt->inserted = (val != -1); | |
879bfdc2 DJ |
1223 | } |
1224 | ||
fe798b75 | 1225 | else if (bpt->owner->type == bp_catchpoint) |
879bfdc2 | 1226 | { |
71fff37b AC |
1227 | struct gdb_exception e = catch_exception (uiout, insert_catchpoint, |
1228 | bpt->owner, RETURN_MASK_ERROR); | |
9cbc821d AC |
1229 | exception_fprintf (gdb_stderr, e, "warning: inserting catchpoint %d: ", |
1230 | bpt->owner->number); | |
1231 | if (e.reason < 0) | |
879bfdc2 DJ |
1232 | bpt->owner->enable_state = bp_disabled; |
1233 | else | |
1234 | bpt->inserted = 1; | |
1640b821 DJ |
1235 | |
1236 | /* We've already printed an error message if there was a problem | |
1237 | inserting this catchpoint, and we've disabled the catchpoint, | |
1238 | so just return success. */ | |
1239 | return 0; | |
879bfdc2 DJ |
1240 | } |
1241 | ||
1242 | return 0; | |
1243 | } | |
1244 | ||
74960c60 VP |
1245 | /* Make sure all breakpoints are inserted in inferior. |
1246 | Throws exception on any error. | |
1247 | A breakpoint that is already inserted won't be inserted | |
1248 | again, so calling this function twice is safe. */ | |
1249 | void | |
1250 | insert_breakpoints (void) | |
1251 | { | |
1252 | struct breakpoint *bpt; | |
1253 | ||
1254 | ALL_BREAKPOINTS (bpt) | |
1255 | if (is_hardware_watchpoint (bpt)) | |
1256 | update_watchpoint (bpt, 0 /* don't reparse. */); | |
1257 | ||
b60e7edf | 1258 | update_global_location_list (1); |
74960c60 | 1259 | |
50c71eaf PA |
1260 | if (!breakpoints_always_inserted_mode () |
1261 | && (target_has_execution | |
1262 | || (gdbarch_has_global_solist (target_gdbarch) | |
1263 | && target_supports_multi_process ()))) | |
74960c60 VP |
1264 | /* update_global_location_list does not insert breakpoints |
1265 | when always_inserted_mode is not enabled. Explicitly | |
1266 | insert them now. */ | |
1267 | insert_breakpoint_locations (); | |
1268 | } | |
1269 | ||
c906108c SS |
1270 | /* insert_breakpoints is used when starting or continuing the program. |
1271 | remove_breakpoints is used when the program stops. | |
1272 | Both return zero if successful, | |
1273 | or an `errno' value if could not write the inferior. */ | |
1274 | ||
74960c60 VP |
1275 | static void |
1276 | insert_breakpoint_locations (void) | |
c906108c | 1277 | { |
a5606eee | 1278 | struct breakpoint *bpt; |
879bfdc2 | 1279 | struct bp_location *b, *temp; |
e236ba44 | 1280 | int error = 0; |
c906108c SS |
1281 | int val = 0; |
1282 | int disabled_breaks = 0; | |
81d0cc19 | 1283 | int hw_breakpoint_error = 0; |
c906108c | 1284 | |
81d0cc19 | 1285 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 1286 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 1287 | |
81d0cc19 GS |
1288 | /* Explicitly mark the warning -- this will only be printed if |
1289 | there was an error. */ | |
1290 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
a5606eee | 1291 | |
879bfdc2 DJ |
1292 | ALL_BP_LOCATIONS_SAFE (b, temp) |
1293 | { | |
74960c60 | 1294 | if (!should_be_inserted (b) || b->inserted) |
879bfdc2 DJ |
1295 | continue; |
1296 | ||
f365de73 AS |
1297 | /* There is no point inserting thread-specific breakpoints if the |
1298 | thread no longer exists. */ | |
1299 | if (b->owner->thread != -1 | |
1300 | && !valid_thread_id (b->owner->thread)) | |
1301 | continue; | |
1302 | ||
879bfdc2 | 1303 | val = insert_bp_location (b, tmp_error_stream, |
fa3a767f | 1304 | &disabled_breaks, |
879bfdc2 DJ |
1305 | &hw_breakpoint_error); |
1306 | if (val) | |
e236ba44 | 1307 | error = val; |
879bfdc2 | 1308 | } |
c906108c | 1309 | |
a5606eee VP |
1310 | /* If we failed to insert all locations of a watchpoint, |
1311 | remove them, as half-inserted watchpoint is of limited use. */ | |
1312 | ALL_BREAKPOINTS (bpt) | |
1313 | { | |
1314 | int some_failed = 0; | |
1315 | struct bp_location *loc; | |
1316 | ||
1317 | if (!is_hardware_watchpoint (bpt)) | |
1318 | continue; | |
1319 | ||
d6b74ac4 | 1320 | if (!breakpoint_enabled (bpt)) |
a5606eee | 1321 | continue; |
74960c60 VP |
1322 | |
1323 | if (bpt->disposition == disp_del_at_next_stop) | |
1324 | continue; | |
a5606eee VP |
1325 | |
1326 | for (loc = bpt->loc; loc; loc = loc->next) | |
1327 | if (!loc->inserted) | |
1328 | { | |
1329 | some_failed = 1; | |
1330 | break; | |
1331 | } | |
1332 | if (some_failed) | |
1333 | { | |
1334 | for (loc = bpt->loc; loc; loc = loc->next) | |
1335 | if (loc->inserted) | |
1336 | remove_breakpoint (loc, mark_uninserted); | |
1337 | ||
1338 | hw_breakpoint_error = 1; | |
1339 | fprintf_unfiltered (tmp_error_stream, | |
1340 | "Could not insert hardware watchpoint %d.\n", | |
1341 | bpt->number); | |
1342 | error = -1; | |
1343 | } | |
1344 | } | |
1345 | ||
e236ba44 | 1346 | if (error) |
81d0cc19 GS |
1347 | { |
1348 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1349 | message about possibly exhausted resources. */ | |
879bfdc2 | 1350 | if (hw_breakpoint_error) |
81d0cc19 | 1351 | { |
c6510018 MS |
1352 | fprintf_unfiltered (tmp_error_stream, |
1353 | "Could not insert hardware breakpoints:\n\ | |
1354 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1355 | } |
81d0cc19 GS |
1356 | target_terminal_ours_for_output (); |
1357 | error_stream (tmp_error_stream); | |
1358 | } | |
f7545552 TT |
1359 | |
1360 | do_cleanups (cleanups); | |
c906108c SS |
1361 | } |
1362 | ||
c906108c | 1363 | int |
fba45db2 | 1364 | remove_breakpoints (void) |
c906108c | 1365 | { |
0bde7532 | 1366 | struct bp_location *b; |
c906108c SS |
1367 | int val; |
1368 | ||
0bde7532 | 1369 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1370 | { |
0bde7532 | 1371 | if (b->inserted) |
c5aa993b JM |
1372 | { |
1373 | val = remove_breakpoint (b, mark_uninserted); | |
1374 | if (val != 0) | |
1375 | return val; | |
1376 | } | |
1377 | } | |
c906108c SS |
1378 | return 0; |
1379 | } | |
1380 | ||
692590c1 | 1381 | int |
80ce1ecb | 1382 | remove_hw_watchpoints (void) |
692590c1 | 1383 | { |
0bde7532 | 1384 | struct bp_location *b; |
692590c1 MS |
1385 | int val; |
1386 | ||
0bde7532 | 1387 | ALL_BP_LOCATIONS (b) |
692590c1 | 1388 | { |
0bde7532 | 1389 | if (b->inserted && b->loc_type == bp_loc_hardware_watchpoint) |
692590c1 MS |
1390 | { |
1391 | val = remove_breakpoint (b, mark_uninserted); | |
1392 | if (val != 0) | |
1393 | return val; | |
1394 | } | |
1395 | } | |
1396 | return 0; | |
1397 | } | |
1398 | ||
c906108c | 1399 | int |
fba45db2 | 1400 | reattach_breakpoints (int pid) |
c906108c | 1401 | { |
0bde7532 | 1402 | struct bp_location *b; |
c906108c | 1403 | int val; |
ce696e05 | 1404 | struct cleanup *old_chain = save_inferior_ptid (); |
a4954f26 | 1405 | struct ui_file *tmp_error_stream = mem_fileopen (); |
fa3a767f | 1406 | int dummy1 = 0, dummy2 = 0; |
a4954f26 DJ |
1407 | |
1408 | make_cleanup_ui_file_delete (tmp_error_stream); | |
c906108c | 1409 | |
ce696e05 | 1410 | inferior_ptid = pid_to_ptid (pid); |
0bde7532 | 1411 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1412 | { |
0bde7532 | 1413 | if (b->inserted) |
c5aa993b | 1414 | { |
a4954f26 DJ |
1415 | b->inserted = 0; |
1416 | val = insert_bp_location (b, tmp_error_stream, | |
fa3a767f | 1417 | &dummy1, &dummy2); |
c5aa993b JM |
1418 | if (val != 0) |
1419 | { | |
ce696e05 | 1420 | do_cleanups (old_chain); |
c5aa993b JM |
1421 | return val; |
1422 | } | |
1423 | } | |
1424 | } | |
ce696e05 | 1425 | do_cleanups (old_chain); |
c906108c SS |
1426 | return 0; |
1427 | } | |
1428 | ||
1429 | void | |
fba45db2 | 1430 | update_breakpoints_after_exec (void) |
c906108c | 1431 | { |
c5aa993b JM |
1432 | struct breakpoint *b; |
1433 | struct breakpoint *temp; | |
25b22b0a | 1434 | struct bp_location *bploc; |
c906108c | 1435 | |
25b22b0a PA |
1436 | /* We're about to delete breakpoints from GDB's lists. If the |
1437 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
1438 | writing the breakpoints' "shadow contents" back into memory. The | |
1439 | "shadow contents" are NOT valid after an exec, so GDB should not | |
1440 | do that. Instead, the target is responsible from marking | |
1441 | breakpoints out as soon as it detects an exec. We don't do that | |
1442 | here instead, because there may be other attempts to delete | |
1443 | breakpoints after detecting an exec and before reaching here. */ | |
1444 | ALL_BP_LOCATIONS (bploc) | |
1445 | gdb_assert (!bploc->inserted); | |
c906108c SS |
1446 | |
1447 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1448 | { |
1449 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
1450 | if (b->type == bp_shlib_event) | |
1451 | { | |
1452 | delete_breakpoint (b); | |
1453 | continue; | |
1454 | } | |
c906108c | 1455 | |
1900040c MS |
1456 | /* Thread event breakpoints must be set anew after an exec(), |
1457 | as must overlay event breakpoints. */ | |
1458 | if (b->type == bp_thread_event || b->type == bp_overlay_event) | |
c4093a6a JM |
1459 | { |
1460 | delete_breakpoint (b); | |
1461 | continue; | |
1462 | } | |
1463 | ||
c5aa993b JM |
1464 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1465 | if (b->type == bp_step_resume) | |
1466 | { | |
1467 | delete_breakpoint (b); | |
1468 | continue; | |
1469 | } | |
1470 | ||
611c83ae PA |
1471 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
1472 | after an exec. */ | |
1473 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume) | |
1474 | { | |
1475 | delete_breakpoint (b); | |
1476 | continue; | |
1477 | } | |
1478 | ||
ce78b96d JB |
1479 | if (b->type == bp_catchpoint) |
1480 | { | |
1481 | /* For now, none of the bp_catchpoint breakpoints need to | |
1482 | do anything at this point. In the future, if some of | |
1483 | the catchpoints need to something, we will need to add | |
1484 | a new method, and call this method from here. */ | |
1485 | continue; | |
1486 | } | |
1487 | ||
c5aa993b JM |
1488 | /* bp_finish is a special case. The only way we ought to be able |
1489 | to see one of these when an exec() has happened, is if the user | |
1490 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1491 | carries them to the call-site of the current callee, by setting | |
1492 | a temporary bp there and resuming. But in this case, the finish | |
1493 | will carry them entirely through the vfork & exec. | |
1494 | ||
1495 | We don't want to allow a bp_finish to remain inserted now. But | |
1496 | we can't safely delete it, 'cause finish_command has a handle to | |
1497 | the bp on a bpstat, and will later want to delete it. There's a | |
1498 | chance (and I've seen it happen) that if we delete the bp_finish | |
1499 | here, that its storage will get reused by the time finish_command | |
1500 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1501 | We really must allow finish_command to delete a bp_finish. | |
1502 | ||
53a5351d JM |
1503 | In the absense of a general solution for the "how do we know |
1504 | it's safe to delete something others may have handles to?" | |
1505 | problem, what we'll do here is just uninsert the bp_finish, and | |
1506 | let finish_command delete it. | |
1507 | ||
1508 | (We know the bp_finish is "doomed" in the sense that it's | |
1509 | momentary, and will be deleted as soon as finish_command sees | |
1510 | the inferior stopped. So it doesn't matter that the bp's | |
1511 | address is probably bogus in the new a.out, unlike e.g., the | |
1512 | solib breakpoints.) */ | |
c5aa993b | 1513 | |
c5aa993b JM |
1514 | if (b->type == bp_finish) |
1515 | { | |
1516 | continue; | |
1517 | } | |
1518 | ||
1519 | /* Without a symbolic address, we have little hope of the | |
1520 | pre-exec() address meaning the same thing in the post-exec() | |
1521 | a.out. */ | |
1522 | if (b->addr_string == NULL) | |
1523 | { | |
1524 | delete_breakpoint (b); | |
1525 | continue; | |
1526 | } | |
c5aa993b | 1527 | } |
1900040c MS |
1528 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
1529 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
1530 | } |
1531 | ||
1532 | int | |
fba45db2 | 1533 | detach_breakpoints (int pid) |
c906108c | 1534 | { |
0bde7532 | 1535 | struct bp_location *b; |
c906108c | 1536 | int val; |
ce696e05 | 1537 | struct cleanup *old_chain = save_inferior_ptid (); |
c5aa993b | 1538 | |
39f77062 | 1539 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 1540 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 1541 | |
ce696e05 KB |
1542 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1543 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1544 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1545 | { |
0bde7532 | 1546 | if (b->inserted) |
c5aa993b JM |
1547 | { |
1548 | val = remove_breakpoint (b, mark_inserted); | |
1549 | if (val != 0) | |
1550 | { | |
ce696e05 | 1551 | do_cleanups (old_chain); |
c5aa993b JM |
1552 | return val; |
1553 | } | |
1554 | } | |
1555 | } | |
ce696e05 | 1556 | do_cleanups (old_chain); |
c906108c SS |
1557 | return 0; |
1558 | } | |
1559 | ||
1560 | static int | |
0bde7532 | 1561 | remove_breakpoint (struct bp_location *b, insertion_state_t is) |
c906108c SS |
1562 | { |
1563 | int val; | |
c5aa993b | 1564 | |
0bde7532 | 1565 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
1566 | /* Permanent breakpoints cannot be inserted or removed. */ |
1567 | return 0; | |
1568 | ||
74960c60 VP |
1569 | /* The type of none suggests that owner is actually deleted. |
1570 | This should not ever happen. */ | |
1571 | gdb_assert (b->owner->type != bp_none); | |
0bde7532 DJ |
1572 | |
1573 | if (b->loc_type == bp_loc_software_breakpoint | |
1574 | || b->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 1575 | { |
c02f5703 MS |
1576 | /* "Normal" instruction breakpoint: either the standard |
1577 | trap-instruction bp (bp_breakpoint), or a | |
1578 | bp_hardware_breakpoint. */ | |
1579 | ||
1580 | /* First check to see if we have to handle an overlay. */ | |
1581 | if (overlay_debugging == ovly_off | |
0bde7532 DJ |
1582 | || b->section == NULL |
1583 | || !(section_is_overlay (b->section))) | |
c02f5703 MS |
1584 | { |
1585 | /* No overlay handling: just remove the breakpoint. */ | |
1586 | ||
0bde7532 | 1587 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1588 | val = target_remove_hw_breakpoint (&b->target_info); |
c02f5703 | 1589 | else |
8181d85f | 1590 | val = target_remove_breakpoint (&b->target_info); |
c02f5703 | 1591 | } |
c906108c SS |
1592 | else |
1593 | { | |
c02f5703 MS |
1594 | /* This breakpoint is in an overlay section. |
1595 | Did we set a breakpoint at the LMA? */ | |
1596 | if (!overlay_events_enabled) | |
1597 | { | |
1598 | /* Yes -- overlay event support is not active, so we | |
1599 | should have set a breakpoint at the LMA. Remove it. | |
1600 | */ | |
c02f5703 MS |
1601 | /* Ignore any failures: if the LMA is in ROM, we will |
1602 | have already warned when we failed to insert it. */ | |
0bde7532 | 1603 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1604 | target_remove_hw_breakpoint (&b->overlay_target_info); |
c02f5703 | 1605 | else |
8181d85f | 1606 | target_remove_breakpoint (&b->overlay_target_info); |
c02f5703 MS |
1607 | } |
1608 | /* Did we set a breakpoint at the VMA? | |
1609 | If so, we will have marked the breakpoint 'inserted'. */ | |
0bde7532 | 1610 | if (b->inserted) |
c906108c | 1611 | { |
c02f5703 MS |
1612 | /* Yes -- remove it. Previously we did not bother to |
1613 | remove the breakpoint if the section had been | |
1614 | unmapped, but let's not rely on that being safe. We | |
1615 | don't know what the overlay manager might do. */ | |
0bde7532 | 1616 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1617 | val = target_remove_hw_breakpoint (&b->target_info); |
aa67235e UW |
1618 | |
1619 | /* However, we should remove *software* breakpoints only | |
1620 | if the section is still mapped, or else we overwrite | |
1621 | wrong code with the saved shadow contents. */ | |
1622 | else if (section_is_mapped (b->section)) | |
8181d85f | 1623 | val = target_remove_breakpoint (&b->target_info); |
aa67235e UW |
1624 | else |
1625 | val = 0; | |
c906108c | 1626 | } |
c02f5703 MS |
1627 | else |
1628 | { | |
1629 | /* No -- not inserted, so no need to remove. No error. */ | |
1630 | val = 0; | |
1631 | } | |
c906108c | 1632 | } |
879d1e6b UW |
1633 | |
1634 | /* In some cases, we might not be able to remove a breakpoint | |
1635 | in a shared library that has already been removed, but we | |
1636 | have not yet processed the shlib unload event. */ | |
f5c9a895 | 1637 | if (val && solib_name_from_address (b->address)) |
879d1e6b UW |
1638 | val = 0; |
1639 | ||
c906108c SS |
1640 | if (val) |
1641 | return val; | |
0bde7532 | 1642 | b->inserted = (is == mark_inserted); |
c906108c | 1643 | } |
a5606eee | 1644 | else if (b->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 1645 | { |
278cd55f AC |
1646 | struct value *v; |
1647 | struct value *n; | |
c5aa993b | 1648 | |
0bde7532 | 1649 | b->inserted = (is == mark_inserted); |
a5606eee VP |
1650 | val = target_remove_watchpoint (b->address, b->length, |
1651 | b->watchpoint_type); | |
2e70b7b9 | 1652 | |
c906108c | 1653 | /* Failure to remove any of the hardware watchpoints comes here. */ |
0bde7532 | 1654 | if ((is == mark_uninserted) && (b->inserted)) |
8a3fe4f8 | 1655 | warning (_("Could not remove hardware watchpoint %d."), |
0bde7532 | 1656 | b->owner->number); |
c906108c | 1657 | } |
ce78b96d JB |
1658 | else if (b->owner->type == bp_catchpoint |
1659 | && breakpoint_enabled (b->owner) | |
1660 | && !b->duplicate) | |
1661 | { | |
1662 | gdb_assert (b->owner->ops != NULL && b->owner->ops->remove != NULL); | |
1663 | ||
1664 | val = b->owner->ops->remove (b->owner); | |
1665 | if (val) | |
1666 | return val; | |
1667 | b->inserted = (is == mark_inserted); | |
1668 | } | |
c906108c SS |
1669 | |
1670 | return 0; | |
1671 | } | |
1672 | ||
1673 | /* Clear the "inserted" flag in all breakpoints. */ | |
1674 | ||
25b22b0a | 1675 | void |
fba45db2 | 1676 | mark_breakpoints_out (void) |
c906108c | 1677 | { |
075f6582 | 1678 | struct bp_location *bpt; |
c906108c | 1679 | |
075f6582 DJ |
1680 | ALL_BP_LOCATIONS (bpt) |
1681 | bpt->inserted = 0; | |
c906108c SS |
1682 | } |
1683 | ||
53a5351d JM |
1684 | /* Clear the "inserted" flag in all breakpoints and delete any |
1685 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1686 | |
1687 | Plus other such housekeeping that has to be done for breakpoints | |
1688 | between runs. | |
1689 | ||
53a5351d JM |
1690 | Note: this function gets called at the end of a run (by |
1691 | generic_mourn_inferior) and when a run begins (by | |
1692 | init_wait_for_inferior). */ | |
c906108c SS |
1693 | |
1694 | ||
1695 | ||
1696 | void | |
fba45db2 | 1697 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 1698 | { |
52f0bd74 | 1699 | struct breakpoint *b, *temp; |
075f6582 | 1700 | struct bp_location *bpt; |
1c5cfe86 | 1701 | int ix; |
c906108c | 1702 | |
50c71eaf PA |
1703 | /* If breakpoint locations are shared across processes, then there's |
1704 | nothing to do. */ | |
1705 | if (gdbarch_has_global_solist (target_gdbarch)) | |
1706 | return; | |
1707 | ||
075f6582 | 1708 | ALL_BP_LOCATIONS (bpt) |
514f746b AR |
1709 | if (bpt->owner->enable_state != bp_permanent) |
1710 | bpt->inserted = 0; | |
075f6582 | 1711 | |
c906108c | 1712 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 1713 | { |
c5aa993b JM |
1714 | switch (b->type) |
1715 | { | |
1716 | case bp_call_dummy: | |
1717 | case bp_watchpoint_scope: | |
c906108c | 1718 | |
c5aa993b JM |
1719 | /* If the call dummy breakpoint is at the entry point it will |
1720 | cause problems when the inferior is rerun, so we better | |
1721 | get rid of it. | |
c906108c | 1722 | |
c5aa993b JM |
1723 | Also get rid of scope breakpoints. */ |
1724 | delete_breakpoint (b); | |
1725 | break; | |
c906108c | 1726 | |
c5aa993b JM |
1727 | case bp_watchpoint: |
1728 | case bp_hardware_watchpoint: | |
1729 | case bp_read_watchpoint: | |
1730 | case bp_access_watchpoint: | |
c906108c | 1731 | |
c5aa993b JM |
1732 | /* Likewise for watchpoints on local expressions. */ |
1733 | if (b->exp_valid_block != NULL) | |
1734 | delete_breakpoint (b); | |
967af18d | 1735 | else if (context == inf_starting) |
c860120c PM |
1736 | { |
1737 | /* Reset val field to force reread of starting value | |
1738 | in insert_breakpoints. */ | |
1739 | if (b->val) | |
1740 | value_free (b->val); | |
1741 | b->val = NULL; | |
fa4727a6 | 1742 | b->val_valid = 0; |
c860120c | 1743 | } |
c5aa993b JM |
1744 | break; |
1745 | default: | |
c5aa993b JM |
1746 | break; |
1747 | } | |
1748 | } | |
1c5cfe86 PA |
1749 | |
1750 | /* Get rid of the moribund locations. */ | |
1751 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bpt); ++ix) | |
1752 | free_bp_location (bpt); | |
1753 | VEC_free (bp_location_p, moribund_locations); | |
c906108c SS |
1754 | } |
1755 | ||
c2c6d25f JM |
1756 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1757 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1758 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1759 | permanent breakpoint. | |
1760 | - When continuing from a location with an ordinary breakpoint, we | |
1761 | actually single step once before calling insert_breakpoints. | |
1762 | - When continuing from a localion with a permanent breakpoint, we | |
1763 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1764 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1765 | |
c2c6d25f | 1766 | enum breakpoint_here |
fba45db2 | 1767 | breakpoint_here_p (CORE_ADDR pc) |
c906108c | 1768 | { |
89f9893c | 1769 | const struct bp_location *bpt; |
c2c6d25f | 1770 | int any_breakpoint_here = 0; |
c906108c | 1771 | |
075f6582 DJ |
1772 | ALL_BP_LOCATIONS (bpt) |
1773 | { | |
1774 | if (bpt->loc_type != bp_loc_software_breakpoint | |
1775 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1776 | continue; | |
1777 | ||
468d015d | 1778 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1779 | || bpt->owner->enable_state == bp_permanent) |
1780 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1781 | { | |
1782 | if (overlay_debugging | |
1783 | && section_is_overlay (bpt->section) | |
1784 | && !section_is_mapped (bpt->section)) | |
1785 | continue; /* unmapped overlay -- can't be a match */ | |
1786 | else if (bpt->owner->enable_state == bp_permanent) | |
1787 | return permanent_breakpoint_here; | |
1788 | else | |
1789 | any_breakpoint_here = 1; | |
1790 | } | |
1791 | } | |
c906108c | 1792 | |
c2c6d25f | 1793 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1794 | } |
1795 | ||
1c5cfe86 PA |
1796 | /* Return true if there's a moribund breakpoint at PC. */ |
1797 | ||
1798 | int | |
1799 | moribund_breakpoint_here_p (CORE_ADDR pc) | |
1800 | { | |
1801 | struct bp_location *loc; | |
1802 | int ix; | |
1803 | ||
1804 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
1805 | if (loc->address == pc) | |
1806 | return 1; | |
1807 | ||
1808 | return 0; | |
1809 | } | |
c2c6d25f | 1810 | |
c36b740a VP |
1811 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
1812 | inserted using regular breakpoint_chain/bp_location_chain mechanism. | |
1813 | This does not check for single-step breakpoints, which are | |
1814 | inserted and removed using direct target manipulation. */ | |
c906108c SS |
1815 | |
1816 | int | |
c36b740a | 1817 | regular_breakpoint_inserted_here_p (CORE_ADDR pc) |
c906108c | 1818 | { |
89f9893c | 1819 | const struct bp_location *bpt; |
c906108c | 1820 | |
075f6582 | 1821 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1822 | { |
075f6582 DJ |
1823 | if (bpt->loc_type != bp_loc_software_breakpoint |
1824 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1825 | continue; | |
1826 | ||
1827 | if (bpt->inserted | |
1828 | && bpt->address == pc) /* bp is inserted and matches pc */ | |
1829 | { | |
1830 | if (overlay_debugging | |
1831 | && section_is_overlay (bpt->section) | |
1832 | && !section_is_mapped (bpt->section)) | |
1833 | continue; /* unmapped overlay -- can't be a match */ | |
1834 | else | |
1835 | return 1; | |
1836 | } | |
c5aa993b | 1837 | } |
c36b740a VP |
1838 | return 0; |
1839 | } | |
1840 | ||
1841 | /* Returns non-zero iff there's either regular breakpoint | |
1842 | or a single step breakpoint inserted at PC. */ | |
1843 | ||
1844 | int | |
1845 | breakpoint_inserted_here_p (CORE_ADDR pc) | |
1846 | { | |
1847 | if (regular_breakpoint_inserted_here_p (pc)) | |
1848 | return 1; | |
c906108c | 1849 | |
1aafd4da UW |
1850 | if (single_step_breakpoint_inserted_here_p (pc)) |
1851 | return 1; | |
1852 | ||
c906108c SS |
1853 | return 0; |
1854 | } | |
1855 | ||
4fa8626c DJ |
1856 | /* This function returns non-zero iff there is a software breakpoint |
1857 | inserted at PC. */ | |
1858 | ||
1859 | int | |
1860 | software_breakpoint_inserted_here_p (CORE_ADDR pc) | |
1861 | { | |
89f9893c | 1862 | const struct bp_location *bpt; |
4fa8626c DJ |
1863 | int any_breakpoint_here = 0; |
1864 | ||
1865 | ALL_BP_LOCATIONS (bpt) | |
1866 | { | |
1867 | if (bpt->loc_type != bp_loc_software_breakpoint) | |
1868 | continue; | |
1869 | ||
0d381245 | 1870 | if (bpt->inserted |
4fa8626c DJ |
1871 | && bpt->address == pc) /* bp is enabled and matches pc */ |
1872 | { | |
1873 | if (overlay_debugging | |
1874 | && section_is_overlay (bpt->section) | |
1875 | && !section_is_mapped (bpt->section)) | |
1876 | continue; /* unmapped overlay -- can't be a match */ | |
1877 | else | |
1878 | return 1; | |
1879 | } | |
1880 | } | |
1881 | ||
1aafd4da UW |
1882 | /* Also check for software single-step breakpoints. */ |
1883 | if (single_step_breakpoint_inserted_here_p (pc)) | |
1884 | return 1; | |
1885 | ||
4fa8626c DJ |
1886 | return 0; |
1887 | } | |
1888 | ||
075f6582 DJ |
1889 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
1890 | PC is valid for process/thread PTID. */ | |
c906108c SS |
1891 | |
1892 | int | |
39f77062 | 1893 | breakpoint_thread_match (CORE_ADDR pc, ptid_t ptid) |
c906108c | 1894 | { |
89f9893c | 1895 | const struct bp_location *bpt; |
a6f1cd96 JB |
1896 | /* The thread ID associated to PTID, computed lazily. */ |
1897 | int thread = -1; | |
1898 | ||
075f6582 | 1899 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1900 | { |
075f6582 DJ |
1901 | if (bpt->loc_type != bp_loc_software_breakpoint |
1902 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1903 | continue; | |
1904 | ||
a6f1cd96 JB |
1905 | if (!breakpoint_enabled (bpt->owner) |
1906 | && bpt->owner->enable_state != bp_permanent) | |
1907 | continue; | |
1908 | ||
1909 | if (bpt->address != pc) | |
1910 | continue; | |
1911 | ||
1912 | if (bpt->owner->thread != -1) | |
075f6582 | 1913 | { |
a6f1cd96 JB |
1914 | /* This is a thread-specific breakpoint. Check that ptid |
1915 | matches that thread. If thread hasn't been computed yet, | |
1916 | it is now time to do so. */ | |
1917 | if (thread == -1) | |
1918 | thread = pid_to_thread_id (ptid); | |
1919 | if (bpt->owner->thread != thread) | |
1920 | continue; | |
075f6582 | 1921 | } |
a6f1cd96 JB |
1922 | |
1923 | if (overlay_debugging | |
1924 | && section_is_overlay (bpt->section) | |
1925 | && !section_is_mapped (bpt->section)) | |
1926 | continue; /* unmapped overlay -- can't be a match */ | |
1927 | ||
1928 | return 1; | |
c5aa993b | 1929 | } |
c906108c SS |
1930 | |
1931 | return 0; | |
1932 | } | |
c906108c | 1933 | \f |
c5aa993b | 1934 | |
c906108c SS |
1935 | /* bpstat stuff. External routines' interfaces are documented |
1936 | in breakpoint.h. */ | |
1937 | ||
1938 | int | |
fba45db2 | 1939 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c | 1940 | { |
533be4dd | 1941 | return (ep->type == bp_catchpoint); |
c906108c SS |
1942 | } |
1943 | ||
198757a8 VP |
1944 | void |
1945 | bpstat_free (bpstat bs) | |
1946 | { | |
1947 | if (bs->old_val != NULL) | |
1948 | value_free (bs->old_val); | |
1949 | free_command_lines (&bs->commands); | |
1950 | xfree (bs); | |
1951 | } | |
1952 | ||
c906108c SS |
1953 | /* Clear a bpstat so that it says we are not at any breakpoint. |
1954 | Also free any storage that is part of a bpstat. */ | |
1955 | ||
1956 | void | |
fba45db2 | 1957 | bpstat_clear (bpstat *bsp) |
c906108c SS |
1958 | { |
1959 | bpstat p; | |
1960 | bpstat q; | |
1961 | ||
1962 | if (bsp == 0) | |
1963 | return; | |
1964 | p = *bsp; | |
1965 | while (p != NULL) | |
1966 | { | |
1967 | q = p->next; | |
198757a8 | 1968 | bpstat_free (p); |
c906108c SS |
1969 | p = q; |
1970 | } | |
1971 | *bsp = NULL; | |
1972 | } | |
1973 | ||
1974 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
1975 | is part of the bpstat is copied as well. */ | |
1976 | ||
1977 | bpstat | |
fba45db2 | 1978 | bpstat_copy (bpstat bs) |
c906108c SS |
1979 | { |
1980 | bpstat p = NULL; | |
1981 | bpstat tmp; | |
1982 | bpstat retval = NULL; | |
1983 | ||
1984 | if (bs == NULL) | |
1985 | return bs; | |
1986 | ||
1987 | for (; bs != NULL; bs = bs->next) | |
1988 | { | |
1989 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
1990 | memcpy (tmp, bs, sizeof (*tmp)); | |
31cc81e9 DJ |
1991 | if (bs->commands != NULL) |
1992 | tmp->commands = copy_command_lines (bs->commands); | |
1993 | if (bs->old_val != NULL) | |
3c3185ac JK |
1994 | { |
1995 | tmp->old_val = value_copy (bs->old_val); | |
1996 | release_value (tmp->old_val); | |
1997 | } | |
31cc81e9 | 1998 | |
c906108c SS |
1999 | if (p == NULL) |
2000 | /* This is the first thing in the chain. */ | |
2001 | retval = tmp; | |
2002 | else | |
2003 | p->next = tmp; | |
2004 | p = tmp; | |
2005 | } | |
2006 | p->next = NULL; | |
2007 | return retval; | |
2008 | } | |
2009 | ||
2010 | /* Find the bpstat associated with this breakpoint */ | |
2011 | ||
2012 | bpstat | |
fba45db2 | 2013 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 2014 | { |
c5aa993b JM |
2015 | if (bsp == NULL) |
2016 | return NULL; | |
c906108c | 2017 | |
c5aa993b JM |
2018 | for (; bsp != NULL; bsp = bsp->next) |
2019 | { | |
4f8d1dc6 | 2020 | if (bsp->breakpoint_at && bsp->breakpoint_at->owner == breakpoint) |
c5aa993b JM |
2021 | return bsp; |
2022 | } | |
c906108c SS |
2023 | return NULL; |
2024 | } | |
2025 | ||
2026 | /* Find a step_resume breakpoint associated with this bpstat. | |
2027 | (If there are multiple step_resume bp's on the list, this function | |
2028 | will arbitrarily pick one.) | |
2029 | ||
2030 | It is an error to use this function if BPSTAT doesn't contain a | |
2031 | step_resume breakpoint. | |
2032 | ||
2033 | See wait_for_inferior's use of this function. */ | |
2034 | struct breakpoint * | |
fba45db2 | 2035 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c | 2036 | { |
8601f500 MS |
2037 | int current_thread; |
2038 | ||
8a3fe4f8 | 2039 | gdb_assert (bsp != NULL); |
c906108c | 2040 | |
8601f500 MS |
2041 | current_thread = pid_to_thread_id (inferior_ptid); |
2042 | ||
c906108c SS |
2043 | for (; bsp != NULL; bsp = bsp->next) |
2044 | { | |
2045 | if ((bsp->breakpoint_at != NULL) && | |
4f8d1dc6 VP |
2046 | (bsp->breakpoint_at->owner->type == bp_step_resume) && |
2047 | (bsp->breakpoint_at->owner->thread == current_thread || | |
2048 | bsp->breakpoint_at->owner->thread == -1)) | |
2049 | return bsp->breakpoint_at->owner; | |
c906108c SS |
2050 | } |
2051 | ||
8a3fe4f8 | 2052 | internal_error (__FILE__, __LINE__, _("No step_resume breakpoint found.")); |
c906108c SS |
2053 | } |
2054 | ||
2055 | ||
8671a17b | 2056 | /* Put in *NUM the breakpoint number of the first breakpoint we are stopped |
c906108c SS |
2057 | at. *BSP upon return is a bpstat which points to the remaining |
2058 | breakpoints stopped at (but which is not guaranteed to be good for | |
2059 | anything but further calls to bpstat_num). | |
8671a17b PA |
2060 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
2061 | Return -1 if stopped at a breakpoint that has been deleted since | |
2062 | we set it. | |
2063 | Return 1 otherwise. */ | |
c906108c SS |
2064 | |
2065 | int | |
8671a17b | 2066 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
2067 | { |
2068 | struct breakpoint *b; | |
2069 | ||
2070 | if ((*bsp) == NULL) | |
2071 | return 0; /* No more breakpoint values */ | |
8671a17b | 2072 | |
4f8d1dc6 VP |
2073 | /* We assume we'll never have several bpstats that |
2074 | correspond to a single breakpoint -- otherwise, | |
2075 | this function might return the same number more | |
2076 | than once and this will look ugly. */ | |
2077 | b = (*bsp)->breakpoint_at ? (*bsp)->breakpoint_at->owner : NULL; | |
8671a17b PA |
2078 | *bsp = (*bsp)->next; |
2079 | if (b == NULL) | |
2080 | return -1; /* breakpoint that's been deleted since */ | |
2081 | ||
2082 | *num = b->number; /* We have its number */ | |
2083 | return 1; | |
c906108c SS |
2084 | } |
2085 | ||
2086 | /* Modify BS so that the actions will not be performed. */ | |
2087 | ||
2088 | void | |
fba45db2 | 2089 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
2090 | { |
2091 | for (; bs != NULL; bs = bs->next) | |
2092 | { | |
c2b8ed2c | 2093 | free_command_lines (&bs->commands); |
c906108c SS |
2094 | if (bs->old_val != NULL) |
2095 | { | |
2096 | value_free (bs->old_val); | |
2097 | bs->old_val = NULL; | |
2098 | } | |
2099 | } | |
2100 | } | |
2101 | ||
f3b1572e PA |
2102 | /* Called when a command is about to proceed the inferior. */ |
2103 | ||
2104 | static void | |
2105 | breakpoint_about_to_proceed (void) | |
2106 | { | |
2107 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
2108 | { | |
2109 | struct thread_info *tp = inferior_thread (); | |
2110 | ||
2111 | /* Allow inferior function calls in breakpoint commands to not | |
2112 | interrupt the command list. When the call finishes | |
2113 | successfully, the inferior will be standing at the same | |
2114 | breakpoint as if nothing happened. */ | |
2115 | if (tp->in_infcall) | |
2116 | return; | |
2117 | } | |
2118 | ||
2119 | breakpoint_proceeded = 1; | |
2120 | } | |
2121 | ||
c906108c | 2122 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ |
c906108c | 2123 | static void |
4efb68b1 | 2124 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
2125 | { |
2126 | executing_breakpoint_commands = 0; | |
2127 | } | |
2128 | ||
2129 | /* Execute all the commands associated with all the breakpoints at this | |
2130 | location. Any of these commands could cause the process to proceed | |
2131 | beyond this point, etc. We look out for such changes by checking | |
347bddb7 | 2132 | the global "breakpoint_proceeded" after each command. |
c906108c | 2133 | |
347bddb7 PA |
2134 | Returns true if a breakpoint command resumed the inferior. In that |
2135 | case, it is the caller's responsibility to recall it again with the | |
2136 | bpstat of the current thread. */ | |
2137 | ||
2138 | static int | |
2139 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
2140 | { |
2141 | bpstat bs; | |
2142 | struct cleanup *old_chain; | |
347bddb7 | 2143 | int again = 0; |
c906108c SS |
2144 | |
2145 | /* Avoid endless recursion if a `source' command is contained | |
2146 | in bs->commands. */ | |
2147 | if (executing_breakpoint_commands) | |
347bddb7 | 2148 | return 0; |
c906108c SS |
2149 | |
2150 | executing_breakpoint_commands = 1; | |
2151 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
2152 | ||
c906108c SS |
2153 | /* This pointer will iterate over the list of bpstat's. */ |
2154 | bs = *bsp; | |
2155 | ||
2156 | breakpoint_proceeded = 0; | |
2157 | for (; bs != NULL; bs = bs->next) | |
2158 | { | |
6c50ab1c JB |
2159 | struct command_line *cmd; |
2160 | struct cleanup *this_cmd_tree_chain; | |
2161 | ||
2162 | /* Take ownership of the BSP's command tree, if it has one. | |
2163 | ||
2164 | The command tree could legitimately contain commands like | |
2165 | 'step' and 'next', which call clear_proceed_status, which | |
2166 | frees stop_bpstat's command tree. To make sure this doesn't | |
2167 | free the tree we're executing out from under us, we need to | |
2168 | take ownership of the tree ourselves. Since a given bpstat's | |
2169 | commands are only executed once, we don't need to copy it; we | |
2170 | can clear the pointer in the bpstat, and make sure we free | |
2171 | the tree when we're done. */ | |
c906108c | 2172 | cmd = bs->commands; |
6c50ab1c JB |
2173 | bs->commands = 0; |
2174 | this_cmd_tree_chain = make_cleanup_free_command_lines (&cmd); | |
2175 | ||
c906108c SS |
2176 | while (cmd != NULL) |
2177 | { | |
2178 | execute_control_command (cmd); | |
2179 | ||
2180 | if (breakpoint_proceeded) | |
2181 | break; | |
2182 | else | |
2183 | cmd = cmd->next; | |
2184 | } | |
6c50ab1c JB |
2185 | |
2186 | /* We can free this command tree now. */ | |
2187 | do_cleanups (this_cmd_tree_chain); | |
2188 | ||
c906108c | 2189 | if (breakpoint_proceeded) |
32c1e744 VP |
2190 | { |
2191 | if (target_can_async_p ()) | |
347bddb7 PA |
2192 | /* If we are in async mode, then the target might be still |
2193 | running, not stopped at any breakpoint, so nothing for | |
2194 | us to do here -- just return to the event loop. */ | |
2195 | ; | |
32c1e744 VP |
2196 | else |
2197 | /* In sync mode, when execute_control_command returns | |
2198 | we're already standing on the next breakpoint. | |
347bddb7 PA |
2199 | Breakpoint commands for that stop were not run, since |
2200 | execute_command does not run breakpoint commands -- | |
2201 | only command_line_handler does, but that one is not | |
2202 | involved in execution of breakpoint commands. So, we | |
2203 | can now execute breakpoint commands. It should be | |
2204 | noted that making execute_command do bpstat actions is | |
2205 | not an option -- in this case we'll have recursive | |
2206 | invocation of bpstat for each breakpoint with a | |
2207 | command, and can easily blow up GDB stack. Instead, we | |
2208 | return true, which will trigger the caller to recall us | |
2209 | with the new stop_bpstat. */ | |
2210 | again = 1; | |
2211 | break; | |
32c1e744 | 2212 | } |
c906108c | 2213 | } |
c2b8ed2c | 2214 | do_cleanups (old_chain); |
347bddb7 PA |
2215 | return again; |
2216 | } | |
2217 | ||
2218 | void | |
2219 | bpstat_do_actions (void) | |
2220 | { | |
2221 | /* Do any commands attached to breakpoint we are stopped at. */ | |
2222 | while (!ptid_equal (inferior_ptid, null_ptid) | |
2223 | && target_has_execution | |
2224 | && !is_exited (inferior_ptid) | |
2225 | && !is_executing (inferior_ptid)) | |
2226 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
2227 | and only return when it is stopped at the next breakpoint, we | |
2228 | keep doing breakpoint actions until it returns false to | |
2229 | indicate the inferior was not resumed. */ | |
2230 | if (!bpstat_do_actions_1 (&inferior_thread ()->stop_bpstat)) | |
2231 | break; | |
c906108c SS |
2232 | } |
2233 | ||
fa4727a6 DJ |
2234 | /* Print out the (old or new) value associated with a watchpoint. */ |
2235 | ||
2236 | static void | |
2237 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
2238 | { | |
2239 | if (val == NULL) | |
2240 | fprintf_unfiltered (stream, _("<unreadable>")); | |
2241 | else | |
79a45b7d TT |
2242 | { |
2243 | struct value_print_options opts; | |
2244 | get_user_print_options (&opts); | |
2245 | value_print (val, stream, &opts); | |
2246 | } | |
fa4727a6 DJ |
2247 | } |
2248 | ||
e514a9d6 | 2249 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 2250 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
2251 | by having it set different print_it values. |
2252 | ||
2253 | Current scheme: When we stop, bpstat_print() is called. It loops | |
2254 | through the bpstat list of things causing this stop, calling the | |
2255 | print_bp_stop_message function on each one. The behavior of the | |
2256 | print_bp_stop_message function depends on the print_it field of | |
2257 | bpstat. If such field so indicates, call this function here. | |
2258 | ||
2259 | Return values from this routine (ultimately used by bpstat_print() | |
2260 | and normal_stop() to decide what to do): | |
2261 | PRINT_NOTHING: Means we already printed all we needed to print, | |
2262 | don't print anything else. | |
2263 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
2264 | that something to be followed by a location. | |
2265 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
2266 | that something to be followed by a location. | |
2267 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
2268 | analysis. */ | |
c906108c | 2269 | |
917317f4 | 2270 | static enum print_stop_action |
fba45db2 | 2271 | print_it_typical (bpstat bs) |
c906108c | 2272 | { |
f7545552 | 2273 | struct cleanup *old_chain; |
4f8d1dc6 | 2274 | struct breakpoint *b; |
89f9893c | 2275 | const struct bp_location *bl; |
8b93c638 | 2276 | struct ui_stream *stb; |
f7545552 TT |
2277 | int bp_temp = 0; |
2278 | enum print_stop_action result; | |
2279 | ||
c906108c SS |
2280 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
2281 | which has since been deleted. */ | |
e514a9d6 | 2282 | if (bs->breakpoint_at == NULL) |
917317f4 | 2283 | return PRINT_UNKNOWN; |
0d381245 VP |
2284 | bl = bs->breakpoint_at; |
2285 | b = bl->owner; | |
c906108c | 2286 | |
f7545552 TT |
2287 | stb = ui_out_stream_new (uiout); |
2288 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
2289 | ||
4f8d1dc6 | 2290 | switch (b->type) |
c906108c | 2291 | { |
e514a9d6 JM |
2292 | case bp_breakpoint: |
2293 | case bp_hardware_breakpoint: | |
2cec12e5 | 2294 | bp_temp = bs->breakpoint_at->owner->disposition == disp_del; |
0d381245 VP |
2295 | if (bl->address != bl->requested_address) |
2296 | breakpoint_adjustment_warning (bl->requested_address, | |
2297 | bl->address, | |
4f8d1dc6 VP |
2298 | b->number, 1); |
2299 | annotate_breakpoint (b->number); | |
2cec12e5 AR |
2300 | if (bp_temp) |
2301 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
2302 | else | |
2303 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 2304 | if (ui_out_is_mi_like_p (uiout)) |
2cec12e5 AR |
2305 | { |
2306 | ui_out_field_string (uiout, "reason", | |
2307 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
2308 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
2309 | } | |
4f8d1dc6 | 2310 | ui_out_field_int (uiout, "bkptno", b->number); |
8b93c638 | 2311 | ui_out_text (uiout, ", "); |
f7545552 | 2312 | result = PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2313 | break; |
2314 | ||
2315 | case bp_shlib_event: | |
917317f4 JM |
2316 | /* Did we stop because the user set the stop_on_solib_events |
2317 | variable? (If so, we report this as a generic, "Stopped due | |
2318 | to shlib event" message.) */ | |
a3f17187 | 2319 | printf_filtered (_("Stopped due to shared library event\n")); |
f7545552 | 2320 | result = PRINT_NOTHING; |
e514a9d6 JM |
2321 | break; |
2322 | ||
c4093a6a JM |
2323 | case bp_thread_event: |
2324 | /* Not sure how we will get here. | |
2325 | GDB should not stop for these breakpoints. */ | |
a3f17187 | 2326 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 2327 | result = PRINT_NOTHING; |
c4093a6a JM |
2328 | break; |
2329 | ||
1900040c MS |
2330 | case bp_overlay_event: |
2331 | /* By analogy with the thread event, GDB should not stop for these. */ | |
a3f17187 | 2332 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 2333 | result = PRINT_NOTHING; |
1900040c MS |
2334 | break; |
2335 | ||
e514a9d6 JM |
2336 | case bp_watchpoint: |
2337 | case bp_hardware_watchpoint: | |
fa4727a6 DJ |
2338 | annotate_watchpoint (b->number); |
2339 | if (ui_out_is_mi_like_p (uiout)) | |
2340 | ui_out_field_string | |
2341 | (uiout, "reason", | |
2342 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
2343 | mention (b); | |
f7545552 | 2344 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
fa4727a6 DJ |
2345 | ui_out_text (uiout, "\nOld value = "); |
2346 | watchpoint_value_print (bs->old_val, stb->stream); | |
2347 | ui_out_field_stream (uiout, "old", stb); | |
2348 | ui_out_text (uiout, "\nNew value = "); | |
2349 | watchpoint_value_print (b->val, stb->stream); | |
2350 | ui_out_field_stream (uiout, "new", stb); | |
fa4727a6 | 2351 | ui_out_text (uiout, "\n"); |
e514a9d6 | 2352 | /* More than one watchpoint may have been triggered. */ |
f7545552 | 2353 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
2354 | break; |
2355 | ||
2356 | case bp_read_watchpoint: | |
9dc5e2a9 | 2357 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2358 | ui_out_field_string |
2359 | (uiout, "reason", | |
2360 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 2361 | mention (b); |
f7545552 | 2362 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 2363 | ui_out_text (uiout, "\nValue = "); |
fa4727a6 | 2364 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 2365 | ui_out_field_stream (uiout, "value", stb); |
8b93c638 | 2366 | ui_out_text (uiout, "\n"); |
f7545552 | 2367 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
2368 | break; |
2369 | ||
2370 | case bp_access_watchpoint: | |
fa4727a6 | 2371 | if (bs->old_val != NULL) |
8b93c638 | 2372 | { |
4f8d1dc6 | 2373 | annotate_watchpoint (b->number); |
9dc5e2a9 | 2374 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2375 | ui_out_field_string |
2376 | (uiout, "reason", | |
2377 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 2378 | mention (b); |
f7545552 | 2379 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 2380 | ui_out_text (uiout, "\nOld value = "); |
fa4727a6 | 2381 | watchpoint_value_print (bs->old_val, stb->stream); |
8b93c638 | 2382 | ui_out_field_stream (uiout, "old", stb); |
8b93c638 JM |
2383 | ui_out_text (uiout, "\nNew value = "); |
2384 | } | |
2385 | else | |
2386 | { | |
4f8d1dc6 | 2387 | mention (b); |
9dc5e2a9 | 2388 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2389 | ui_out_field_string |
2390 | (uiout, "reason", | |
2391 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
f7545552 | 2392 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2393 | ui_out_text (uiout, "\nValue = "); |
2394 | } | |
fa4727a6 | 2395 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 2396 | ui_out_field_stream (uiout, "new", stb); |
8b93c638 | 2397 | ui_out_text (uiout, "\n"); |
f7545552 | 2398 | result = PRINT_UNKNOWN; |
e514a9d6 | 2399 | break; |
4ce44c66 | 2400 | |
e514a9d6 JM |
2401 | /* Fall through, we don't deal with these types of breakpoints |
2402 | here. */ | |
2403 | ||
11cf8741 | 2404 | case bp_finish: |
9dc5e2a9 | 2405 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2406 | ui_out_field_string |
2407 | (uiout, "reason", | |
2408 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
f7545552 | 2409 | result = PRINT_UNKNOWN; |
8b93c638 JM |
2410 | break; |
2411 | ||
e514a9d6 | 2412 | case bp_until: |
9dc5e2a9 | 2413 | if (ui_out_is_mi_like_p (uiout)) |
1fbc2a49 NR |
2414 | ui_out_field_string |
2415 | (uiout, "reason", | |
2416 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
f7545552 | 2417 | result = PRINT_UNKNOWN; |
8b93c638 JM |
2418 | break; |
2419 | ||
c2d11a7d | 2420 | case bp_none: |
e514a9d6 JM |
2421 | case bp_longjmp: |
2422 | case bp_longjmp_resume: | |
2423 | case bp_step_resume: | |
e514a9d6 JM |
2424 | case bp_watchpoint_scope: |
2425 | case bp_call_dummy: | |
2426 | default: | |
f7545552 TT |
2427 | result = PRINT_UNKNOWN; |
2428 | break; | |
e514a9d6 | 2429 | } |
f7545552 TT |
2430 | |
2431 | do_cleanups (old_chain); | |
2432 | return result; | |
e514a9d6 JM |
2433 | } |
2434 | ||
2435 | /* Generic routine for printing messages indicating why we | |
2436 | stopped. The behavior of this function depends on the value | |
2437 | 'print_it' in the bpstat structure. Under some circumstances we | |
2438 | may decide not to print anything here and delegate the task to | |
2439 | normal_stop(). */ | |
2440 | ||
2441 | static enum print_stop_action | |
2442 | print_bp_stop_message (bpstat bs) | |
2443 | { | |
2444 | switch (bs->print_it) | |
2445 | { | |
2446 | case print_it_noop: | |
2447 | /* Nothing should be printed for this bpstat entry. */ | |
2448 | return PRINT_UNKNOWN; | |
2449 | break; | |
2450 | ||
2451 | case print_it_done: | |
2452 | /* We still want to print the frame, but we already printed the | |
2453 | relevant messages. */ | |
2454 | return PRINT_SRC_AND_LOC; | |
2455 | break; | |
2456 | ||
2457 | case print_it_normal: | |
4f8d1dc6 | 2458 | { |
89f9893c | 2459 | const struct bp_location *bl = bs->breakpoint_at; |
4f8d1dc6 VP |
2460 | struct breakpoint *b = bl ? bl->owner : NULL; |
2461 | ||
2462 | /* Normal case. Call the breakpoint's print_it method, or | |
2463 | print_it_typical. */ | |
2464 | /* FIXME: how breakpoint can ever be NULL here? */ | |
2465 | if (b != NULL && b->ops != NULL && b->ops->print_it != NULL) | |
2466 | return b->ops->print_it (b); | |
2467 | else | |
2468 | return print_it_typical (bs); | |
2469 | } | |
2470 | break; | |
3086aeae | 2471 | |
e514a9d6 | 2472 | default: |
8e65ff28 | 2473 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2474 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 2475 | break; |
c906108c | 2476 | } |
c906108c SS |
2477 | } |
2478 | ||
e514a9d6 JM |
2479 | /* Print a message indicating what happened. This is called from |
2480 | normal_stop(). The input to this routine is the head of the bpstat | |
2481 | list - a list of the eventpoints that caused this stop. This | |
2482 | routine calls the generic print routine for printing a message | |
2483 | about reasons for stopping. This will print (for example) the | |
2484 | "Breakpoint n," part of the output. The return value of this | |
2485 | routine is one of: | |
c906108c | 2486 | |
917317f4 JM |
2487 | PRINT_UNKNOWN: Means we printed nothing |
2488 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2489 | code to print the location. An example is |
2490 | "Breakpoint 1, " which should be followed by | |
2491 | the location. | |
917317f4 | 2492 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2493 | to also print the location part of the message. |
2494 | An example is the catch/throw messages, which | |
917317f4 JM |
2495 | don't require a location appended to the end. |
2496 | PRINT_NOTHING: We have done some printing and we don't need any | |
2497 | further info to be printed.*/ | |
c906108c | 2498 | |
917317f4 | 2499 | enum print_stop_action |
fba45db2 | 2500 | bpstat_print (bpstat bs) |
c906108c SS |
2501 | { |
2502 | int val; | |
c5aa993b | 2503 | |
c906108c | 2504 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2505 | (Currently all watchpoints go on the bpstat whether hit or not. |
2506 | That probably could (should) be changed, provided care is taken | |
c906108c | 2507 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2508 | for (; bs; bs = bs->next) |
2509 | { | |
2510 | val = print_bp_stop_message (bs); | |
2511 | if (val == PRINT_SRC_ONLY | |
2512 | || val == PRINT_SRC_AND_LOC | |
2513 | || val == PRINT_NOTHING) | |
2514 | return val; | |
2515 | } | |
c906108c | 2516 | |
e514a9d6 JM |
2517 | /* We reached the end of the chain, or we got a null BS to start |
2518 | with and nothing was printed. */ | |
917317f4 | 2519 | return PRINT_UNKNOWN; |
c906108c SS |
2520 | } |
2521 | ||
2522 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2523 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2524 | The argument is a "struct expression *" that has been cast to char * to | |
2525 | make it pass through catch_errors. */ | |
2526 | ||
2527 | static int | |
4efb68b1 | 2528 | breakpoint_cond_eval (void *exp) |
c906108c | 2529 | { |
278cd55f | 2530 | struct value *mark = value_mark (); |
c5aa993b | 2531 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2532 | value_free_to_mark (mark); |
2533 | return i; | |
2534 | } | |
2535 | ||
2536 | /* Allocate a new bpstat and chain it to the current one. */ | |
2537 | ||
2538 | static bpstat | |
89f9893c | 2539 | bpstat_alloc (const struct bp_location *bl, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
2540 | { |
2541 | bpstat bs; | |
2542 | ||
2543 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2544 | cbs->next = bs; | |
4f8d1dc6 | 2545 | bs->breakpoint_at = bl; |
c906108c SS |
2546 | /* If the condition is false, etc., don't do the commands. */ |
2547 | bs->commands = NULL; | |
2548 | bs->old_val = NULL; | |
2549 | bs->print_it = print_it_normal; | |
2550 | return bs; | |
2551 | } | |
2552 | \f | |
d983da9c DJ |
2553 | /* The target has stopped with waitstatus WS. Check if any hardware |
2554 | watchpoints have triggered, according to the target. */ | |
2555 | ||
2556 | int | |
2557 | watchpoints_triggered (struct target_waitstatus *ws) | |
2558 | { | |
2559 | int stopped_by_watchpoint = STOPPED_BY_WATCHPOINT (*ws); | |
2560 | CORE_ADDR addr; | |
2561 | struct breakpoint *b; | |
2562 | ||
2563 | if (!stopped_by_watchpoint) | |
2564 | { | |
2565 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
2566 | as not triggered. */ | |
2567 | ALL_BREAKPOINTS (b) | |
2568 | if (b->type == bp_hardware_watchpoint | |
2569 | || b->type == bp_read_watchpoint | |
2570 | || b->type == bp_access_watchpoint) | |
2571 | b->watchpoint_triggered = watch_triggered_no; | |
2572 | ||
2573 | return 0; | |
2574 | } | |
2575 | ||
2576 | if (!target_stopped_data_address (¤t_target, &addr)) | |
2577 | { | |
2578 | /* We were stopped by a watchpoint, but we don't know where. | |
2579 | Mark all watchpoints as unknown. */ | |
2580 | ALL_BREAKPOINTS (b) | |
2581 | if (b->type == bp_hardware_watchpoint | |
2582 | || b->type == bp_read_watchpoint | |
2583 | || b->type == bp_access_watchpoint) | |
2584 | b->watchpoint_triggered = watch_triggered_unknown; | |
2585 | ||
2586 | return stopped_by_watchpoint; | |
2587 | } | |
2588 | ||
2589 | /* The target could report the data address. Mark watchpoints | |
2590 | affected by this data address as triggered, and all others as not | |
2591 | triggered. */ | |
2592 | ||
2593 | ALL_BREAKPOINTS (b) | |
2594 | if (b->type == bp_hardware_watchpoint | |
2595 | || b->type == bp_read_watchpoint | |
2596 | || b->type == bp_access_watchpoint) | |
2597 | { | |
a5606eee | 2598 | struct bp_location *loc; |
d983da9c DJ |
2599 | struct value *v; |
2600 | ||
2601 | b->watchpoint_triggered = watch_triggered_no; | |
a5606eee VP |
2602 | for (loc = b->loc; loc; loc = loc->next) |
2603 | /* Exact match not required. Within range is | |
2604 | sufficient. */ | |
5009afc5 AS |
2605 | if (target_watchpoint_addr_within_range (¤t_target, |
2606 | addr, loc->address, | |
2607 | loc->length)) | |
a5606eee VP |
2608 | { |
2609 | b->watchpoint_triggered = watch_triggered_yes; | |
2610 | break; | |
2611 | } | |
d983da9c DJ |
2612 | } |
2613 | ||
2614 | return 1; | |
2615 | } | |
2616 | ||
c906108c SS |
2617 | /* Possible return values for watchpoint_check (this can't be an enum |
2618 | because of check_errors). */ | |
2619 | /* The watchpoint has been deleted. */ | |
2620 | #define WP_DELETED 1 | |
2621 | /* The value has changed. */ | |
2622 | #define WP_VALUE_CHANGED 2 | |
2623 | /* The value has not changed. */ | |
2624 | #define WP_VALUE_NOT_CHANGED 3 | |
2625 | ||
2626 | #define BP_TEMPFLAG 1 | |
2627 | #define BP_HARDWAREFLAG 2 | |
2628 | ||
2629 | /* Check watchpoint condition. */ | |
2630 | ||
2631 | static int | |
4efb68b1 | 2632 | watchpoint_check (void *p) |
c906108c SS |
2633 | { |
2634 | bpstat bs = (bpstat) p; | |
2635 | struct breakpoint *b; | |
2636 | struct frame_info *fr; | |
2637 | int within_current_scope; | |
2638 | ||
4f8d1dc6 | 2639 | b = bs->breakpoint_at->owner; |
c906108c SS |
2640 | |
2641 | if (b->exp_valid_block == NULL) | |
2642 | within_current_scope = 1; | |
2643 | else | |
2644 | { | |
2645 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2646 | any chance of handling watchpoints on local variables, we'll need |
2647 | the frame chain (so we can determine if we're in scope). */ | |
2648 | reinit_frame_cache (); | |
101dcfbe | 2649 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 2650 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
2651 | |
2652 | /* If we've gotten confused in the unwinder, we might have | |
2653 | returned a frame that can't describe this variable. */ | |
2654 | if (within_current_scope | |
7f0df278 DJ |
2655 | && (block_linkage_function (b->exp_valid_block) |
2656 | != get_frame_function (fr))) | |
69fbadd5 DJ |
2657 | within_current_scope = 0; |
2658 | ||
c12260ac CV |
2659 | /* in_function_epilogue_p() returns a non-zero value if we're still |
2660 | in the function but the stack frame has already been invalidated. | |
2661 | Since we can't rely on the values of local variables after the | |
2662 | stack has been destroyed, we are treating the watchpoint in that | |
a957e642 CV |
2663 | state as `not changed' without further checking. |
2664 | ||
2665 | vinschen/2003-09-04: The former implementation left out the case | |
2666 | that the watchpoint frame couldn't be found by frame_find_by_id() | |
2667 | because the current PC is currently in an epilogue. Calling | |
2668 | gdbarch_in_function_epilogue_p() also when fr == NULL fixes that. */ | |
a6fbcf2f | 2669 | if ((!within_current_scope || fr == get_current_frame ()) |
c12260ac CV |
2670 | && gdbarch_in_function_epilogue_p (current_gdbarch, read_pc ())) |
2671 | return WP_VALUE_NOT_CHANGED; | |
a6fbcf2f | 2672 | if (fr && within_current_scope) |
c906108c SS |
2673 | /* If we end up stopping, the current frame will get selected |
2674 | in normal_stop. So this call to select_frame won't affect | |
2675 | the user. */ | |
0f7d239c | 2676 | select_frame (fr); |
c906108c | 2677 | } |
c5aa993b | 2678 | |
c906108c SS |
2679 | if (within_current_scope) |
2680 | { | |
2681 | /* We use value_{,free_to_}mark because it could be a | |
2682 | *long* time before we return to the command level and | |
c5aa993b JM |
2683 | call free_all_values. We can't call free_all_values because |
2684 | we might be in the middle of evaluating a function call. */ | |
c906108c | 2685 | |
278cd55f | 2686 | struct value *mark = value_mark (); |
fa4727a6 DJ |
2687 | struct value *new_val; |
2688 | ||
2689 | fetch_watchpoint_value (b->exp, &new_val, NULL, NULL); | |
2690 | if ((b->val != NULL) != (new_val != NULL) | |
2691 | || (b->val != NULL && !value_equal (b->val, new_val))) | |
c906108c | 2692 | { |
fa4727a6 DJ |
2693 | if (new_val != NULL) |
2694 | { | |
2695 | release_value (new_val); | |
2696 | value_free_to_mark (mark); | |
2697 | } | |
c906108c SS |
2698 | bs->old_val = b->val; |
2699 | b->val = new_val; | |
fa4727a6 | 2700 | b->val_valid = 1; |
c906108c SS |
2701 | /* We will stop here */ |
2702 | return WP_VALUE_CHANGED; | |
2703 | } | |
2704 | else | |
2705 | { | |
2706 | /* Nothing changed, don't do anything. */ | |
2707 | value_free_to_mark (mark); | |
2708 | /* We won't stop here */ | |
2709 | return WP_VALUE_NOT_CHANGED; | |
2710 | } | |
2711 | } | |
2712 | else | |
2713 | { | |
2714 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2715 | if we temporarily ignored the watchpoint, then when |
2716 | we reenter the block in which it is valid it contains | |
2717 | garbage (in the case of a function, it may have two | |
2718 | garbage values, one before and one after the prologue). | |
2719 | So we can't even detect the first assignment to it and | |
2720 | watch after that (since the garbage may or may not equal | |
2721 | the first value assigned). */ | |
4ce44c66 JM |
2722 | /* We print all the stop information in print_it_typical(), but |
2723 | in this case, by the time we call print_it_typical() this bp | |
2724 | will be deleted already. So we have no choice but print the | |
2725 | information here. */ | |
9dc5e2a9 | 2726 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2727 | ui_out_field_string |
2728 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 2729 | ui_out_text (uiout, "\nWatchpoint "); |
4f8d1dc6 | 2730 | ui_out_field_int (uiout, "wpnum", b->number); |
8b93c638 JM |
2731 | ui_out_text (uiout, " deleted because the program has left the block in\n\ |
2732 | which its expression is valid.\n"); | |
4ce44c66 | 2733 | |
c906108c | 2734 | if (b->related_breakpoint) |
b5de0fa7 EZ |
2735 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2736 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
2737 | |
2738 | return WP_DELETED; | |
2739 | } | |
2740 | } | |
2741 | ||
18a18393 VP |
2742 | /* Return true if it looks like target has stopped due to hitting |
2743 | breakpoint location BL. This function does not check if we | |
2744 | should stop, only if BL explains the stop. */ | |
2745 | static int | |
2746 | bpstat_check_location (const struct bp_location *bl, CORE_ADDR bp_addr) | |
2747 | { | |
2748 | struct breakpoint *b = bl->owner; | |
2749 | ||
2750 | if (b->type != bp_watchpoint | |
2751 | && b->type != bp_hardware_watchpoint | |
2752 | && b->type != bp_read_watchpoint | |
2753 | && b->type != bp_access_watchpoint | |
2754 | && b->type != bp_hardware_breakpoint | |
fe798b75 | 2755 | && b->type != bp_catchpoint) /* a non-watchpoint bp */ |
18a18393 VP |
2756 | { |
2757 | if (bl->address != bp_addr) /* address doesn't match */ | |
2758 | return 0; | |
2759 | if (overlay_debugging /* unmapped overlay section */ | |
2760 | && section_is_overlay (bl->section) | |
2761 | && !section_is_mapped (bl->section)) | |
2762 | return 0; | |
2763 | } | |
2764 | ||
2765 | /* Continuable hardware watchpoints are treated as non-existent if the | |
2766 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
2767 | some data address). Otherwise gdb won't stop on a break instruction | |
2768 | in the code (not from a breakpoint) when a hardware watchpoint has | |
2769 | been defined. Also skip watchpoints which we know did not trigger | |
2770 | (did not match the data address). */ | |
2771 | ||
2772 | if ((b->type == bp_hardware_watchpoint | |
2773 | || b->type == bp_read_watchpoint | |
2774 | || b->type == bp_access_watchpoint) | |
2775 | && b->watchpoint_triggered == watch_triggered_no) | |
2776 | return 0; | |
2777 | ||
2778 | if (b->type == bp_hardware_breakpoint) | |
2779 | { | |
2780 | if (bl->address != bp_addr) | |
2781 | return 0; | |
2782 | if (overlay_debugging /* unmapped overlay section */ | |
2783 | && section_is_overlay (bl->section) | |
2784 | && !section_is_mapped (bl->section)) | |
2785 | return 0; | |
2786 | } | |
ce78b96d | 2787 | |
ce78b96d JB |
2788 | if (b->type == bp_catchpoint) |
2789 | { | |
2790 | gdb_assert (b->ops != NULL && b->ops->breakpoint_hit != NULL); | |
2791 | if (!b->ops->breakpoint_hit (b)) | |
2792 | return 0; | |
2793 | } | |
2794 | ||
18a18393 VP |
2795 | return 1; |
2796 | } | |
2797 | ||
2798 | /* If BS refers to a watchpoint, determine if the watched values | |
2799 | has actually changed, and we should stop. If not, set BS->stop | |
2800 | to 0. */ | |
2801 | static void | |
2802 | bpstat_check_watchpoint (bpstat bs) | |
2803 | { | |
2804 | const struct bp_location *bl = bs->breakpoint_at; | |
2805 | struct breakpoint *b = bl->owner; | |
2806 | ||
2807 | if (b->type == bp_watchpoint | |
2808 | || b->type == bp_read_watchpoint | |
2809 | || b->type == bp_access_watchpoint | |
2810 | || b->type == bp_hardware_watchpoint) | |
2811 | { | |
2812 | CORE_ADDR addr; | |
2813 | struct value *v; | |
2814 | int must_check_value = 0; | |
2815 | ||
2816 | if (b->type == bp_watchpoint) | |
2817 | /* For a software watchpoint, we must always check the | |
2818 | watched value. */ | |
2819 | must_check_value = 1; | |
2820 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
2821 | /* We have a hardware watchpoint (read, write, or access) | |
2822 | and the target earlier reported an address watched by | |
2823 | this watchpoint. */ | |
2824 | must_check_value = 1; | |
2825 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
2826 | && b->type == bp_hardware_watchpoint) | |
2827 | /* We were stopped by a hardware watchpoint, but the target could | |
2828 | not report the data address. We must check the watchpoint's | |
2829 | value. Access and read watchpoints are out of luck; without | |
2830 | a data address, we can't figure it out. */ | |
2831 | must_check_value = 1; | |
2832 | ||
2833 | if (must_check_value) | |
2834 | { | |
2835 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
2836 | b->number); | |
2837 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2838 | int e = catch_errors (watchpoint_check, bs, message, | |
2839 | RETURN_MASK_ALL); | |
2840 | do_cleanups (cleanups); | |
2841 | switch (e) | |
2842 | { | |
2843 | case WP_DELETED: | |
2844 | /* We've already printed what needs to be printed. */ | |
2845 | bs->print_it = print_it_done; | |
2846 | /* Stop. */ | |
2847 | break; | |
2848 | case WP_VALUE_CHANGED: | |
2849 | if (b->type == bp_read_watchpoint) | |
2850 | { | |
2851 | /* Don't stop: read watchpoints shouldn't fire if | |
2852 | the value has changed. This is for targets | |
2853 | which cannot set read-only watchpoints. */ | |
2854 | bs->print_it = print_it_noop; | |
2855 | bs->stop = 0; | |
2856 | } | |
2857 | break; | |
2858 | case WP_VALUE_NOT_CHANGED: | |
2859 | if (b->type == bp_hardware_watchpoint | |
2860 | || b->type == bp_watchpoint) | |
2861 | { | |
2862 | /* Don't stop: write watchpoints shouldn't fire if | |
2863 | the value hasn't changed. */ | |
2864 | bs->print_it = print_it_noop; | |
2865 | bs->stop = 0; | |
2866 | } | |
2867 | /* Stop. */ | |
2868 | break; | |
2869 | default: | |
2870 | /* Can't happen. */ | |
2871 | case 0: | |
2872 | /* Error from catch_errors. */ | |
2873 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); | |
2874 | if (b->related_breakpoint) | |
2875 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
2876 | b->disposition = disp_del_at_next_stop; | |
2877 | /* We've already printed what needs to be printed. */ | |
2878 | bs->print_it = print_it_done; | |
2879 | break; | |
2880 | } | |
2881 | } | |
2882 | else /* must_check_value == 0 */ | |
2883 | { | |
2884 | /* This is a case where some watchpoint(s) triggered, but | |
2885 | not at the address of this watchpoint, or else no | |
2886 | watchpoint triggered after all. So don't print | |
2887 | anything for this watchpoint. */ | |
2888 | bs->print_it = print_it_noop; | |
2889 | bs->stop = 0; | |
2890 | } | |
2891 | } | |
2892 | } | |
2893 | ||
2894 | ||
2895 | /* Check conditions (condition proper, frame, thread and ignore count) | |
2896 | of breakpoint referred to by BS. If we should not stop for this | |
2897 | breakpoint, set BS->stop to 0. */ | |
2898 | static void | |
2899 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
2900 | { | |
2901 | int thread_id = pid_to_thread_id (ptid); | |
2902 | const struct bp_location *bl = bs->breakpoint_at; | |
2903 | struct breakpoint *b = bl->owner; | |
2904 | ||
2905 | if (frame_id_p (b->frame_id) | |
2906 | && !frame_id_eq (b->frame_id, get_frame_id (get_current_frame ()))) | |
2907 | bs->stop = 0; | |
2908 | else if (bs->stop) | |
2909 | { | |
2910 | int value_is_zero = 0; | |
2911 | ||
2912 | /* If this is a scope breakpoint, mark the associated | |
2913 | watchpoint as triggered so that we will handle the | |
2914 | out-of-scope event. We'll get to the watchpoint next | |
2915 | iteration. */ | |
2916 | if (b->type == bp_watchpoint_scope) | |
2917 | b->related_breakpoint->watchpoint_triggered = watch_triggered_yes; | |
2918 | ||
2919 | if (bl->cond && bl->owner->disposition != disp_del_at_next_stop) | |
2920 | { | |
c5bc3a77 DJ |
2921 | /* We use value_mark and value_free_to_mark because it could |
2922 | be a long time before we return to the command level and | |
2923 | call free_all_values. We can't call free_all_values | |
2924 | because we might be in the middle of evaluating a | |
2925 | function call. */ | |
2926 | struct value *mark = value_mark (); | |
2927 | ||
18a18393 VP |
2928 | /* Need to select the frame, with all that implies |
2929 | so that the conditions will have the right context. */ | |
2930 | select_frame (get_current_frame ()); | |
2931 | value_is_zero | |
2932 | = catch_errors (breakpoint_cond_eval, (bl->cond), | |
2933 | "Error in testing breakpoint condition:\n", | |
2934 | RETURN_MASK_ALL); | |
2935 | /* FIXME-someday, should give breakpoint # */ | |
c5bc3a77 | 2936 | value_free_to_mark (mark); |
18a18393 VP |
2937 | } |
2938 | if (bl->cond && value_is_zero) | |
2939 | { | |
2940 | bs->stop = 0; | |
2941 | } | |
2942 | else if (b->thread != -1 && b->thread != thread_id) | |
2943 | { | |
2944 | bs->stop = 0; | |
2945 | } | |
2946 | else if (b->ignore_count > 0) | |
2947 | { | |
2948 | b->ignore_count--; | |
2949 | annotate_ignore_count_change (); | |
2950 | bs->stop = 0; | |
2951 | /* Increase the hit count even though we don't | |
2952 | stop. */ | |
2953 | ++(b->hit_count); | |
2954 | } | |
2955 | } | |
2956 | } | |
2957 | ||
2958 | ||
9709f61c | 2959 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 2960 | BP_ADDR in thread PTID. |
c906108c | 2961 | |
d983da9c | 2962 | Determine whether we stopped at a breakpoint, etc, or whether we |
c906108c SS |
2963 | don't understand this stop. Result is a chain of bpstat's such that: |
2964 | ||
c5aa993b | 2965 | if we don't understand the stop, the result is a null pointer. |
c906108c | 2966 | |
c5aa993b | 2967 | if we understand why we stopped, the result is not null. |
c906108c | 2968 | |
c5aa993b JM |
2969 | Each element of the chain refers to a particular breakpoint or |
2970 | watchpoint at which we have stopped. (We may have stopped for | |
2971 | several reasons concurrently.) | |
c906108c | 2972 | |
c5aa993b JM |
2973 | Each element of the chain has valid next, breakpoint_at, |
2974 | commands, FIXME??? fields. */ | |
c906108c SS |
2975 | |
2976 | bpstat | |
d983da9c | 2977 | bpstat_stop_status (CORE_ADDR bp_addr, ptid_t ptid) |
c906108c | 2978 | { |
0d381245 | 2979 | struct breakpoint *b = NULL; |
89f9893c | 2980 | const struct bp_location *bl; |
20874c92 | 2981 | struct bp_location *loc; |
c906108c SS |
2982 | /* Root of the chain of bpstat's */ |
2983 | struct bpstats root_bs[1]; | |
2984 | /* Pointer to the last thing in the chain currently. */ | |
2985 | bpstat bs = root_bs; | |
20874c92 | 2986 | int ix; |
d832cb68 | 2987 | int need_remove_insert; |
c906108c | 2988 | |
0d381245 | 2989 | ALL_BP_LOCATIONS (bl) |
c5aa993b | 2990 | { |
0d381245 VP |
2991 | b = bl->owner; |
2992 | gdb_assert (b); | |
468d015d | 2993 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) |
c5aa993b JM |
2994 | continue; |
2995 | ||
a5606eee VP |
2996 | /* For hardware watchpoints, we look only at the first location. |
2997 | The watchpoint_check function will work on entire expression, | |
2998 | not the individual locations. For read watchopints, the | |
2999 | watchpoints_triggered function have checked all locations | |
3000 | alrea | |
3001 | */ | |
3002 | if (b->type == bp_hardware_watchpoint && bl != b->loc) | |
3003 | continue; | |
3004 | ||
18a18393 VP |
3005 | if (!bpstat_check_location (bl, bp_addr)) |
3006 | continue; | |
3007 | ||
c5aa993b JM |
3008 | /* Come here if it's a watchpoint, or if the break address matches */ |
3009 | ||
0d381245 | 3010 | bs = bpstat_alloc (bl, bs); /* Alloc a bpstat to explain stop */ |
c5aa993b | 3011 | |
18a18393 VP |
3012 | /* Assume we stop. Should we find watchpoint that is not actually |
3013 | triggered, or if condition of breakpoint is false, we'll reset | |
3014 | 'stop' to 0. */ | |
c5aa993b JM |
3015 | bs->stop = 1; |
3016 | bs->print = 1; | |
3017 | ||
18a18393 VP |
3018 | bpstat_check_watchpoint (bs); |
3019 | if (!bs->stop) | |
3020 | continue; | |
c5aa993b | 3021 | |
18a18393 VP |
3022 | if (b->type == bp_thread_event || b->type == bp_overlay_event) |
3023 | /* We do not stop for these. */ | |
c5aa993b JM |
3024 | bs->stop = 0; |
3025 | else | |
18a18393 VP |
3026 | bpstat_check_breakpoint_conditions (bs, ptid); |
3027 | ||
3028 | if (bs->stop) | |
c5aa993b | 3029 | { |
18a18393 | 3030 | ++(b->hit_count); |
d983da9c | 3031 | |
18a18393 VP |
3032 | /* We will stop here */ |
3033 | if (b->disposition == disp_disable) | |
c5aa993b | 3034 | { |
514f746b AR |
3035 | if (b->enable_state != bp_permanent) |
3036 | b->enable_state = bp_disabled; | |
b60e7edf | 3037 | update_global_location_list (0); |
c5aa993b | 3038 | } |
18a18393 VP |
3039 | if (b->silent) |
3040 | bs->print = 0; | |
3041 | bs->commands = b->commands; | |
3042 | if (bs->commands && | |
3043 | (strcmp ("silent", bs->commands->line) == 0 | |
3044 | || (xdb_commands && strcmp ("Q", bs->commands->line) == 0))) | |
c5aa993b | 3045 | { |
18a18393 VP |
3046 | bs->commands = bs->commands->next; |
3047 | bs->print = 0; | |
c5aa993b | 3048 | } |
18a18393 | 3049 | bs->commands = copy_command_lines (bs->commands); |
c5aa993b | 3050 | } |
18a18393 | 3051 | |
c5aa993b JM |
3052 | /* Print nothing for this entry if we dont stop or if we dont print. */ |
3053 | if (bs->stop == 0 || bs->print == 0) | |
3054 | bs->print_it = print_it_noop; | |
3055 | } | |
c906108c | 3056 | |
20874c92 VP |
3057 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) |
3058 | { | |
3059 | if (loc->address == bp_addr) | |
3060 | { | |
3061 | bs = bpstat_alloc (loc, bs); | |
3062 | /* For hits of moribund locations, we should just proceed. */ | |
3063 | bs->stop = 0; | |
3064 | bs->print = 0; | |
3065 | bs->print_it = print_it_noop; | |
3066 | } | |
3067 | } | |
3068 | ||
c906108c SS |
3069 | bs->next = NULL; /* Terminate the chain */ |
3070 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
3071 | ||
d983da9c DJ |
3072 | /* If we aren't stopping, the value of some hardware watchpoint may |
3073 | not have changed, but the intermediate memory locations we are | |
3074 | watching may have. Don't bother if we're stopping; this will get | |
3075 | done later. */ | |
3076 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3077 | if (bs->stop) | |
3078 | break; | |
3079 | ||
d832cb68 | 3080 | need_remove_insert = 0; |
d983da9c DJ |
3081 | if (bs == NULL) |
3082 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3083 | if (!bs->stop | |
20874c92 | 3084 | && bs->breakpoint_at->owner |
d983da9c DJ |
3085 | && (bs->breakpoint_at->owner->type == bp_hardware_watchpoint |
3086 | || bs->breakpoint_at->owner->type == bp_read_watchpoint | |
3087 | || bs->breakpoint_at->owner->type == bp_access_watchpoint)) | |
3088 | { | |
a5606eee VP |
3089 | /* remove/insert can invalidate bs->breakpoint_at, if this |
3090 | location is no longer used by the watchpoint. Prevent | |
3091 | further code from trying to use it. */ | |
3092 | bs->breakpoint_at = NULL; | |
d832cb68 | 3093 | need_remove_insert = 1; |
d983da9c DJ |
3094 | } |
3095 | ||
d832cb68 DD |
3096 | if (need_remove_insert) |
3097 | { | |
3098 | remove_breakpoints (); | |
3099 | insert_breakpoints (); | |
3100 | } | |
3101 | ||
d983da9c | 3102 | return root_bs->next; |
c906108c SS |
3103 | } |
3104 | \f | |
3105 | /* Tell what to do about this bpstat. */ | |
3106 | struct bpstat_what | |
fba45db2 | 3107 | bpstat_what (bpstat bs) |
c906108c SS |
3108 | { |
3109 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
3110 | enum class |
3111 | { | |
3112 | /* This bpstat element has no effect on the main_action. */ | |
3113 | no_effect = 0, | |
3114 | ||
3115 | /* There was a watchpoint, stop but don't print. */ | |
3116 | wp_silent, | |
c906108c | 3117 | |
c5aa993b JM |
3118 | /* There was a watchpoint, stop and print. */ |
3119 | wp_noisy, | |
c906108c | 3120 | |
c5aa993b JM |
3121 | /* There was a breakpoint but we're not stopping. */ |
3122 | bp_nostop, | |
c906108c | 3123 | |
c5aa993b JM |
3124 | /* There was a breakpoint, stop but don't print. */ |
3125 | bp_silent, | |
c906108c | 3126 | |
c5aa993b JM |
3127 | /* There was a breakpoint, stop and print. */ |
3128 | bp_noisy, | |
c906108c | 3129 | |
c5aa993b JM |
3130 | /* We hit the longjmp breakpoint. */ |
3131 | long_jump, | |
c906108c | 3132 | |
c5aa993b JM |
3133 | /* We hit the longjmp_resume breakpoint. */ |
3134 | long_resume, | |
c906108c | 3135 | |
c5aa993b JM |
3136 | /* We hit the step_resume breakpoint. */ |
3137 | step_resume, | |
c906108c | 3138 | |
c5aa993b JM |
3139 | /* We hit the shared library event breakpoint. */ |
3140 | shlib_event, | |
c906108c | 3141 | |
c5aa993b JM |
3142 | /* This is just used to count how many enums there are. */ |
3143 | class_last | |
c906108c SS |
3144 | }; |
3145 | ||
3146 | /* Here is the table which drives this routine. So that we can | |
3147 | format it pretty, we define some abbreviations for the | |
3148 | enum bpstat_what codes. */ | |
3149 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
3150 | #define ss BPSTAT_WHAT_STOP_SILENT | |
3151 | #define sn BPSTAT_WHAT_STOP_NOISY | |
3152 | #define sgl BPSTAT_WHAT_SINGLE | |
3153 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
3154 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
c906108c | 3155 | #define sr BPSTAT_WHAT_STEP_RESUME |
c906108c | 3156 | #define shl BPSTAT_WHAT_CHECK_SHLIBS |
c906108c SS |
3157 | |
3158 | /* "Can't happen." Might want to print an error message. | |
3159 | abort() is not out of the question, but chances are GDB is just | |
3160 | a bit confused, not unusable. */ | |
3161 | #define err BPSTAT_WHAT_STOP_NOISY | |
3162 | ||
3163 | /* Given an old action and a class, come up with a new action. */ | |
3164 | /* One interesting property of this table is that wp_silent is the same | |
3165 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
3166 | after stopping, the check for whether to step over a breakpoint | |
3167 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
3168 | reference to how we stopped. We retain separate wp_silent and |
3169 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
3170 | |
3171 | Another possibly interesting property of this table is that | |
3172 | there's a partial ordering, priority-like, of the actions. Once | |
3173 | you've decided that some action is appropriate, you'll never go | |
3174 | back and decide something of a lower priority is better. The | |
3175 | ordering is: | |
3176 | ||
d81191fc JB |
3177 | kc < clr sgl shl slr sn sr ss |
3178 | sgl < shl slr sn sr ss | |
3179 | slr < err shl sn sr ss | |
3180 | clr < err shl sn sr ss | |
3181 | ss < shl sn sr | |
3182 | sn < shl sr | |
3183 | shl < sr | |
4d5b2cd7 | 3184 | sr < |
c5aa993b | 3185 | |
43ff13b4 JM |
3186 | What I think this means is that we don't need a damned table |
3187 | here. If you just put the rows and columns in the right order, | |
3188 | it'd look awfully regular. We could simply walk the bpstat list | |
3189 | and choose the highest priority action we find, with a little | |
78b6a731 | 3190 | logic to handle the 'err' cases. */ |
c906108c SS |
3191 | |
3192 | /* step_resume entries: a step resume breakpoint overrides another | |
3193 | breakpoint of signal handling (see comment in wait_for_inferior | |
fcf70625 | 3194 | at where we set the step_resume breakpoint). */ |
c906108c SS |
3195 | |
3196 | static const enum bpstat_what_main_action | |
c5aa993b JM |
3197 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
3198 | { | |
3199 | /* old action */ | |
d81191fc | 3200 | /* kc ss sn sgl slr clr sr shl |
c5aa993b JM |
3201 | */ |
3202 | /*no_effect */ | |
d81191fc | 3203 | {kc, ss, sn, sgl, slr, clr, sr, shl}, |
c5aa993b | 3204 | /*wp_silent */ |
d81191fc | 3205 | {ss, ss, sn, ss, ss, ss, sr, shl}, |
c5aa993b | 3206 | /*wp_noisy */ |
d81191fc | 3207 | {sn, sn, sn, sn, sn, sn, sr, shl}, |
c5aa993b | 3208 | /*bp_nostop */ |
d81191fc | 3209 | {sgl, ss, sn, sgl, slr, slr, sr, shl}, |
c5aa993b | 3210 | /*bp_silent */ |
d81191fc | 3211 | {ss, ss, sn, ss, ss, ss, sr, shl}, |
c5aa993b | 3212 | /*bp_noisy */ |
d81191fc | 3213 | {sn, sn, sn, sn, sn, sn, sr, shl}, |
c5aa993b | 3214 | /*long_jump */ |
d81191fc | 3215 | {slr, ss, sn, slr, slr, err, sr, shl}, |
c5aa993b | 3216 | /*long_resume */ |
d81191fc | 3217 | {clr, ss, sn, err, err, err, sr, shl}, |
c5aa993b | 3218 | /*step_resume */ |
d81191fc | 3219 | {sr, sr, sr, sr, sr, sr, sr, sr}, |
c5aa993b | 3220 | /*shlib */ |
d81191fc | 3221 | {shl, shl, shl, shl, shl, shl, sr, shl} |
c5aa993b | 3222 | }; |
c906108c SS |
3223 | |
3224 | #undef kc | |
3225 | #undef ss | |
3226 | #undef sn | |
3227 | #undef sgl | |
3228 | #undef slr | |
3229 | #undef clr | |
c906108c SS |
3230 | #undef err |
3231 | #undef sr | |
3232 | #undef ts | |
3233 | #undef shl | |
c906108c SS |
3234 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; |
3235 | struct bpstat_what retval; | |
3236 | ||
3237 | retval.call_dummy = 0; | |
3238 | for (; bs != NULL; bs = bs->next) | |
3239 | { | |
3240 | enum class bs_class = no_effect; | |
3241 | if (bs->breakpoint_at == NULL) | |
3242 | /* I suspect this can happen if it was a momentary breakpoint | |
3243 | which has since been deleted. */ | |
3244 | continue; | |
20874c92 VP |
3245 | if (bs->breakpoint_at->owner == NULL) |
3246 | bs_class = bp_nostop; | |
3247 | else | |
4f8d1dc6 | 3248 | switch (bs->breakpoint_at->owner->type) |
c906108c SS |
3249 | { |
3250 | case bp_none: | |
3251 | continue; | |
3252 | ||
3253 | case bp_breakpoint: | |
3254 | case bp_hardware_breakpoint: | |
3255 | case bp_until: | |
3256 | case bp_finish: | |
3257 | if (bs->stop) | |
3258 | { | |
3259 | if (bs->print) | |
3260 | bs_class = bp_noisy; | |
3261 | else | |
3262 | bs_class = bp_silent; | |
3263 | } | |
3264 | else | |
3265 | bs_class = bp_nostop; | |
3266 | break; | |
3267 | case bp_watchpoint: | |
3268 | case bp_hardware_watchpoint: | |
3269 | case bp_read_watchpoint: | |
3270 | case bp_access_watchpoint: | |
3271 | if (bs->stop) | |
3272 | { | |
3273 | if (bs->print) | |
3274 | bs_class = wp_noisy; | |
3275 | else | |
3276 | bs_class = wp_silent; | |
3277 | } | |
3278 | else | |
53a5351d JM |
3279 | /* There was a watchpoint, but we're not stopping. |
3280 | This requires no further action. */ | |
c906108c SS |
3281 | bs_class = no_effect; |
3282 | break; | |
3283 | case bp_longjmp: | |
3284 | bs_class = long_jump; | |
3285 | break; | |
3286 | case bp_longjmp_resume: | |
3287 | bs_class = long_resume; | |
3288 | break; | |
3289 | case bp_step_resume: | |
3290 | if (bs->stop) | |
3291 | { | |
3292 | bs_class = step_resume; | |
3293 | } | |
3294 | else | |
3295 | /* It is for the wrong frame. */ | |
3296 | bs_class = bp_nostop; | |
3297 | break; | |
c906108c SS |
3298 | case bp_watchpoint_scope: |
3299 | bs_class = bp_nostop; | |
3300 | break; | |
c5aa993b JM |
3301 | case bp_shlib_event: |
3302 | bs_class = shlib_event; | |
3303 | break; | |
c4093a6a | 3304 | case bp_thread_event: |
1900040c | 3305 | case bp_overlay_event: |
c4093a6a JM |
3306 | bs_class = bp_nostop; |
3307 | break; | |
ce78b96d | 3308 | case bp_catchpoint: |
c5aa993b JM |
3309 | if (bs->stop) |
3310 | { | |
3311 | if (bs->print) | |
3312 | bs_class = bp_noisy; | |
3313 | else | |
3314 | bs_class = bp_silent; | |
3315 | } | |
3316 | else | |
53a5351d JM |
3317 | /* There was a catchpoint, but we're not stopping. |
3318 | This requires no further action. */ | |
c5aa993b JM |
3319 | bs_class = no_effect; |
3320 | break; | |
c906108c | 3321 | case bp_call_dummy: |
53a5351d JM |
3322 | /* Make sure the action is stop (silent or noisy), |
3323 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
3324 | bs_class = bp_silent; |
3325 | retval.call_dummy = 1; | |
3326 | break; | |
3327 | } | |
c5aa993b | 3328 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
3329 | } |
3330 | retval.main_action = current_action; | |
3331 | return retval; | |
3332 | } | |
3333 | ||
3334 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
3335 | without hardware support). This isn't related to a specific bpstat, | |
3336 | just to things like whether watchpoints are set. */ | |
3337 | ||
c5aa993b | 3338 | int |
fba45db2 | 3339 | bpstat_should_step (void) |
c906108c SS |
3340 | { |
3341 | struct breakpoint *b; | |
3342 | ALL_BREAKPOINTS (b) | |
717a8278 | 3343 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 3344 | return 1; |
c906108c SS |
3345 | return 0; |
3346 | } | |
3347 | ||
c906108c | 3348 | \f |
c5aa993b | 3349 | |
0d381245 VP |
3350 | static void print_breakpoint_location (struct breakpoint *b, |
3351 | struct bp_location *loc, | |
3352 | char *wrap_indent, | |
3353 | struct ui_stream *stb) | |
3354 | { | |
3355 | if (b->source_file) | |
3356 | { | |
3357 | struct symbol *sym | |
3358 | = find_pc_sect_function (loc->address, loc->section); | |
3359 | if (sym) | |
3360 | { | |
3361 | ui_out_text (uiout, "in "); | |
3362 | ui_out_field_string (uiout, "func", | |
3363 | SYMBOL_PRINT_NAME (sym)); | |
3364 | ui_out_wrap_hint (uiout, wrap_indent); | |
3365 | ui_out_text (uiout, " at "); | |
3366 | } | |
3367 | ui_out_field_string (uiout, "file", b->source_file); | |
3368 | ui_out_text (uiout, ":"); | |
3369 | ||
3370 | if (ui_out_is_mi_like_p (uiout)) | |
3371 | { | |
3372 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
3373 | char *fullname = symtab_to_fullname (sal.symtab); | |
3374 | ||
3375 | if (fullname) | |
3376 | ui_out_field_string (uiout, "fullname", fullname); | |
3377 | } | |
3378 | ||
3379 | ui_out_field_int (uiout, "line", b->line_number); | |
3380 | } | |
3381 | else if (!b->loc) | |
3382 | { | |
3383 | ui_out_field_string (uiout, "pending", b->addr_string); | |
3384 | } | |
3385 | else | |
3386 | { | |
3387 | print_address_symbolic (loc->address, stb->stream, demangle, ""); | |
3388 | ui_out_field_stream (uiout, "at", stb); | |
3389 | } | |
3390 | } | |
3391 | ||
c4093a6a | 3392 | /* Print B to gdb_stdout. */ |
c906108c | 3393 | static void |
0d381245 VP |
3394 | print_one_breakpoint_location (struct breakpoint *b, |
3395 | struct bp_location *loc, | |
3396 | int loc_number, | |
3397 | CORE_ADDR *last_addr) | |
c906108c | 3398 | { |
52f0bd74 AC |
3399 | struct command_line *l; |
3400 | struct symbol *sym; | |
c4093a6a JM |
3401 | struct ep_type_description |
3402 | { | |
3403 | enum bptype type; | |
3404 | char *description; | |
3405 | }; | |
3406 | static struct ep_type_description bptypes[] = | |
c906108c | 3407 | { |
c5aa993b JM |
3408 | {bp_none, "?deleted?"}, |
3409 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3410 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3411 | {bp_until, "until"}, |
3412 | {bp_finish, "finish"}, | |
3413 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3414 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3415 | {bp_read_watchpoint, "read watchpoint"}, |
3416 | {bp_access_watchpoint, "acc watchpoint"}, | |
3417 | {bp_longjmp, "longjmp"}, | |
3418 | {bp_longjmp_resume, "longjmp resume"}, | |
3419 | {bp_step_resume, "step resume"}, | |
c5aa993b JM |
3420 | {bp_watchpoint_scope, "watchpoint scope"}, |
3421 | {bp_call_dummy, "call dummy"}, | |
3422 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3423 | {bp_thread_event, "thread events"}, |
1900040c | 3424 | {bp_overlay_event, "overlay events"}, |
ce78b96d | 3425 | {bp_catchpoint, "catchpoint"}, |
c5aa993b | 3426 | }; |
c4093a6a | 3427 | |
c2c6d25f | 3428 | static char bpenables[] = "nynny"; |
c906108c | 3429 | char wrap_indent[80]; |
8b93c638 JM |
3430 | struct ui_stream *stb = ui_out_stream_new (uiout); |
3431 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 3432 | struct cleanup *bkpt_chain; |
c906108c | 3433 | |
0d381245 VP |
3434 | int header_of_multiple = 0; |
3435 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
3436 | struct value_print_options opts; |
3437 | ||
3438 | get_user_print_options (&opts); | |
0d381245 VP |
3439 | |
3440 | gdb_assert (!loc || loc_number != 0); | |
3441 | /* See comment in print_one_breakpoint concerning | |
3442 | treatment of breakpoints with single disabled | |
3443 | location. */ | |
3444 | if (loc == NULL | |
3445 | && (b->loc != NULL | |
3446 | && (b->loc->next != NULL || !b->loc->enabled))) | |
3447 | header_of_multiple = 1; | |
3448 | if (loc == NULL) | |
3449 | loc = b->loc; | |
3450 | ||
c4093a6a | 3451 | annotate_record (); |
3b31d625 | 3452 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
3453 | |
3454 | /* 1 */ | |
3455 | annotate_field (0); | |
0d381245 VP |
3456 | if (part_of_multiple) |
3457 | { | |
3458 | char *formatted; | |
0c6773c1 | 3459 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
3460 | ui_out_field_string (uiout, "number", formatted); |
3461 | xfree (formatted); | |
3462 | } | |
3463 | else | |
3464 | { | |
3465 | ui_out_field_int (uiout, "number", b->number); | |
3466 | } | |
c4093a6a JM |
3467 | |
3468 | /* 2 */ | |
3469 | annotate_field (1); | |
0d381245 VP |
3470 | if (part_of_multiple) |
3471 | ui_out_field_skip (uiout, "type"); | |
3472 | else | |
3473 | { | |
3474 | if (((int) b->type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3475 | || ((int) b->type != bptypes[(int) b->type].type)) | |
3476 | internal_error (__FILE__, __LINE__, | |
3477 | _("bptypes table does not describe type #%d."), | |
3478 | (int) b->type); | |
3479 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); | |
3480 | } | |
c4093a6a JM |
3481 | |
3482 | /* 3 */ | |
3483 | annotate_field (2); | |
0d381245 VP |
3484 | if (part_of_multiple) |
3485 | ui_out_field_skip (uiout, "disp"); | |
3486 | else | |
2cec12e5 | 3487 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 3488 | |
c4093a6a JM |
3489 | |
3490 | /* 4 */ | |
3491 | annotate_field (3); | |
0d381245 | 3492 | if (part_of_multiple) |
54e52265 | 3493 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 3494 | else |
54e52265 VP |
3495 | ui_out_field_fmt (uiout, "enabled", "%c", |
3496 | bpenables[(int) b->enable_state]); | |
3497 | ui_out_spaces (uiout, 2); | |
0d381245 | 3498 | |
c4093a6a JM |
3499 | |
3500 | /* 5 and 6 */ | |
3501 | strcpy (wrap_indent, " "); | |
79a45b7d | 3502 | if (opts.addressprint) |
75ac9d7b | 3503 | { |
17a912b6 | 3504 | if (gdbarch_addr_bit (current_gdbarch) <= 32) |
75ac9d7b MS |
3505 | strcat (wrap_indent, " "); |
3506 | else | |
3507 | strcat (wrap_indent, " "); | |
3508 | } | |
c906108c | 3509 | |
3086aeae | 3510 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 VP |
3511 | { |
3512 | /* Although the print_one can possibly print | |
3513 | all locations, calling it here is not likely | |
3514 | to get any nice result. So, make sure there's | |
3515 | just one location. */ | |
3516 | gdb_assert (b->loc == NULL || b->loc->next == NULL); | |
3517 | b->ops->print_one (b, last_addr); | |
3518 | } | |
3086aeae DJ |
3519 | else |
3520 | switch (b->type) | |
3521 | { | |
3522 | case bp_none: | |
3523 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 3524 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 3525 | break; |
c906108c | 3526 | |
3086aeae DJ |
3527 | case bp_watchpoint: |
3528 | case bp_hardware_watchpoint: | |
3529 | case bp_read_watchpoint: | |
3530 | case bp_access_watchpoint: | |
3531 | /* Field 4, the address, is omitted (which makes the columns | |
3532 | not line up too nicely with the headers, but the effect | |
3533 | is relatively readable). */ | |
79a45b7d | 3534 | if (opts.addressprint) |
3086aeae DJ |
3535 | ui_out_field_skip (uiout, "addr"); |
3536 | annotate_field (5); | |
fa8a61dc | 3537 | ui_out_field_string (uiout, "what", b->exp_string); |
3086aeae DJ |
3538 | break; |
3539 | ||
3086aeae DJ |
3540 | case bp_breakpoint: |
3541 | case bp_hardware_breakpoint: | |
3542 | case bp_until: | |
3543 | case bp_finish: | |
3544 | case bp_longjmp: | |
3545 | case bp_longjmp_resume: | |
3546 | case bp_step_resume: | |
3086aeae DJ |
3547 | case bp_watchpoint_scope: |
3548 | case bp_call_dummy: | |
3549 | case bp_shlib_event: | |
3550 | case bp_thread_event: | |
3551 | case bp_overlay_event: | |
79a45b7d | 3552 | if (opts.addressprint) |
3086aeae DJ |
3553 | { |
3554 | annotate_field (4); | |
54e52265 | 3555 | if (header_of_multiple) |
0d381245 | 3556 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 3557 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 3558 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 3559 | else |
0d381245 | 3560 | ui_out_field_core_addr (uiout, "addr", loc->address); |
3086aeae DJ |
3561 | } |
3562 | annotate_field (5); | |
0d381245 VP |
3563 | if (!header_of_multiple) |
3564 | print_breakpoint_location (b, loc, wrap_indent, stb); | |
3565 | if (b->loc) | |
3566 | *last_addr = b->loc->address; | |
3086aeae DJ |
3567 | break; |
3568 | } | |
c906108c | 3569 | |
0d381245 | 3570 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 3571 | { |
8b93c638 JM |
3572 | /* FIXME: This seems to be redundant and lost here; see the |
3573 | "stop only in" line a little further down. */ | |
3574 | ui_out_text (uiout, " thread "); | |
3575 | ui_out_field_int (uiout, "thread", b->thread); | |
c4093a6a JM |
3576 | } |
3577 | ||
8b93c638 | 3578 | ui_out_text (uiout, "\n"); |
c4093a6a | 3579 | |
0d381245 | 3580 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
3581 | { |
3582 | annotate_field (6); | |
8b93c638 | 3583 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
3584 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
3585 | the frame ID. */ | |
d0a55772 | 3586 | ui_out_field_core_addr (uiout, "frame", b->frame_id.stack_addr); |
8b93c638 | 3587 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
3588 | } |
3589 | ||
0d381245 | 3590 | if (!part_of_multiple && b->cond_string && !ada_exception_catchpoint_p (b)) |
c4093a6a | 3591 | { |
f7f9143b JB |
3592 | /* We do not print the condition for Ada exception catchpoints |
3593 | because the condition is an internal implementation detail | |
3594 | that we do not want to expose to the user. */ | |
c4093a6a | 3595 | annotate_field (7); |
8b93c638 | 3596 | ui_out_text (uiout, "\tstop only if "); |
0101ce28 JJ |
3597 | ui_out_field_string (uiout, "cond", b->cond_string); |
3598 | ui_out_text (uiout, "\n"); | |
3599 | } | |
3600 | ||
0d381245 | 3601 | if (!part_of_multiple && b->thread != -1) |
c4093a6a JM |
3602 | { |
3603 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3604 | ui_out_text (uiout, "\tstop only in thread "); |
3605 | ui_out_field_int (uiout, "thread", b->thread); | |
3606 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3607 | } |
3608 | ||
63c715c6 | 3609 | if (!part_of_multiple && b->hit_count) |
c4093a6a JM |
3610 | { |
3611 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3612 | if (ep_is_catchpoint (b)) |
3613 | ui_out_text (uiout, "\tcatchpoint"); | |
3614 | else | |
3615 | ui_out_text (uiout, "\tbreakpoint"); | |
3616 | ui_out_text (uiout, " already hit "); | |
3617 | ui_out_field_int (uiout, "times", b->hit_count); | |
3618 | if (b->hit_count == 1) | |
3619 | ui_out_text (uiout, " time\n"); | |
3620 | else | |
3621 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
3622 | } |
3623 | ||
fb40c209 AC |
3624 | /* Output the count also if it is zero, but only if this is |
3625 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 3626 | if (ui_out_is_mi_like_p (uiout)) |
63c715c6 | 3627 | if (!part_of_multiple && b->hit_count == 0) |
fb40c209 | 3628 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 3629 | |
0d381245 | 3630 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
3631 | { |
3632 | annotate_field (8); | |
8b93c638 JM |
3633 | ui_out_text (uiout, "\tignore next "); |
3634 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3635 | ui_out_text (uiout, " hits\n"); | |
c4093a6a JM |
3636 | } |
3637 | ||
0d381245 | 3638 | if (!part_of_multiple && (l = b->commands)) |
c4093a6a | 3639 | { |
3b31d625 EZ |
3640 | struct cleanup *script_chain; |
3641 | ||
c4093a6a | 3642 | annotate_field (9); |
3b31d625 | 3643 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 3644 | print_command_lines (uiout, l, 4); |
3b31d625 | 3645 | do_cleanups (script_chain); |
c4093a6a | 3646 | } |
d24317b4 VP |
3647 | |
3648 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) | |
3649 | { | |
3650 | if (b->addr_string) | |
3651 | ui_out_field_string (uiout, "original-location", b->addr_string); | |
3652 | else if (b->exp_string) | |
3653 | ui_out_field_string (uiout, "original-location", b->exp_string); | |
3654 | } | |
3655 | ||
3b31d625 | 3656 | do_cleanups (bkpt_chain); |
8b93c638 | 3657 | do_cleanups (old_chain); |
c4093a6a | 3658 | } |
c5aa993b | 3659 | |
0d381245 VP |
3660 | static void |
3661 | print_one_breakpoint (struct breakpoint *b, | |
3662 | CORE_ADDR *last_addr) | |
3663 | { | |
3664 | print_one_breakpoint_location (b, NULL, 0, last_addr); | |
3665 | ||
3666 | /* If this breakpoint has custom print function, | |
3667 | it's already printed. Otherwise, print individual | |
3668 | locations, if any. */ | |
3669 | if (b->ops == NULL || b->ops->print_one == NULL) | |
3670 | { | |
3671 | /* If breakpoint has a single location that is | |
3672 | disabled, we print it as if it had | |
3673 | several locations, since otherwise it's hard to | |
3674 | represent "breakpoint enabled, location disabled" | |
a5606eee VP |
3675 | situation. |
3676 | Note that while hardware watchpoints have | |
3677 | several locations internally, that's no a property | |
3678 | exposed to user. */ | |
0d381245 | 3679 | if (b->loc |
a5606eee | 3680 | && !is_hardware_watchpoint (b) |
0d381245 | 3681 | && (b->loc->next || !b->loc->enabled) |
a5606eee | 3682 | && !ui_out_is_mi_like_p (uiout)) |
0d381245 VP |
3683 | { |
3684 | struct bp_location *loc; | |
3685 | int n = 1; | |
3686 | for (loc = b->loc; loc; loc = loc->next, ++n) | |
3687 | print_one_breakpoint_location (b, loc, n, last_addr); | |
3688 | } | |
3689 | } | |
3690 | } | |
3691 | ||
3692 | ||
c4093a6a JM |
3693 | struct captured_breakpoint_query_args |
3694 | { | |
3695 | int bnum; | |
3696 | }; | |
c5aa993b | 3697 | |
c4093a6a | 3698 | static int |
2b65245e | 3699 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
3700 | { |
3701 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 3702 | struct breakpoint *b; |
c4093a6a JM |
3703 | CORE_ADDR dummy_addr = 0; |
3704 | ALL_BREAKPOINTS (b) | |
3705 | { | |
3706 | if (args->bnum == b->number) | |
c5aa993b | 3707 | { |
c4093a6a JM |
3708 | print_one_breakpoint (b, &dummy_addr); |
3709 | return GDB_RC_OK; | |
c5aa993b | 3710 | } |
c4093a6a JM |
3711 | } |
3712 | return GDB_RC_NONE; | |
3713 | } | |
c5aa993b | 3714 | |
c4093a6a | 3715 | enum gdb_rc |
ce43223b | 3716 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, char **error_message) |
c4093a6a JM |
3717 | { |
3718 | struct captured_breakpoint_query_args args; | |
3719 | args.bnum = bnum; | |
3720 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3721 | an error. */ | |
b0b13bb4 DJ |
3722 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
3723 | error_message, RETURN_MASK_ALL) < 0) | |
3724 | return GDB_RC_FAIL; | |
3725 | else | |
3726 | return GDB_RC_OK; | |
c4093a6a | 3727 | } |
c5aa993b | 3728 | |
7f3b0473 AC |
3729 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
3730 | catchpoints, et.al.). */ | |
3731 | ||
3732 | static int | |
3733 | user_settable_breakpoint (const struct breakpoint *b) | |
3734 | { | |
3735 | return (b->type == bp_breakpoint | |
ce78b96d | 3736 | || b->type == bp_catchpoint |
7f3b0473 AC |
3737 | || b->type == bp_hardware_breakpoint |
3738 | || b->type == bp_watchpoint | |
3739 | || b->type == bp_read_watchpoint | |
3740 | || b->type == bp_access_watchpoint | |
3741 | || b->type == bp_hardware_watchpoint); | |
3742 | } | |
3743 | ||
3744 | /* Print information on user settable breakpoint (watchpoint, etc) | |
3745 | number BNUM. If BNUM is -1 print all user settable breakpoints. | |
3746 | If ALLFLAG is non-zero, include non- user settable breakpoints. */ | |
c906108c | 3747 | |
c4093a6a | 3748 | static void |
fba45db2 | 3749 | breakpoint_1 (int bnum, int allflag) |
c4093a6a | 3750 | { |
52f0bd74 | 3751 | struct breakpoint *b; |
c4093a6a | 3752 | CORE_ADDR last_addr = (CORE_ADDR) -1; |
7f3b0473 | 3753 | int nr_printable_breakpoints; |
3b31d625 | 3754 | struct cleanup *bkpttbl_chain; |
79a45b7d | 3755 | struct value_print_options opts; |
c4093a6a | 3756 | |
79a45b7d TT |
3757 | get_user_print_options (&opts); |
3758 | ||
7f3b0473 AC |
3759 | /* Compute the number of rows in the table. */ |
3760 | nr_printable_breakpoints = 0; | |
3761 | ALL_BREAKPOINTS (b) | |
3762 | if (bnum == -1 | |
3763 | || bnum == b->number) | |
3764 | { | |
3765 | if (allflag || user_settable_breakpoint (b)) | |
3766 | nr_printable_breakpoints++; | |
3767 | } | |
3768 | ||
79a45b7d | 3769 | if (opts.addressprint) |
3b31d625 EZ |
3770 | bkpttbl_chain |
3771 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
3772 | "BreakpointTable"); | |
8b93c638 | 3773 | else |
3b31d625 EZ |
3774 | bkpttbl_chain |
3775 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
3776 | "BreakpointTable"); | |
8b93c638 | 3777 | |
7f3b0473 | 3778 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
3779 | annotate_breakpoints_headers (); |
3780 | if (nr_printable_breakpoints > 0) | |
3781 | annotate_field (0); | |
0d381245 | 3782 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
3783 | if (nr_printable_breakpoints > 0) |
3784 | annotate_field (1); | |
3785 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
3786 | if (nr_printable_breakpoints > 0) | |
3787 | annotate_field (2); | |
3788 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
3789 | if (nr_printable_breakpoints > 0) | |
3790 | annotate_field (3); | |
54e52265 | 3791 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 3792 | if (opts.addressprint) |
7f3b0473 | 3793 | { |
d7faa9e7 AC |
3794 | if (nr_printable_breakpoints > 0) |
3795 | annotate_field (4); | |
17a912b6 | 3796 | if (gdbarch_addr_bit (current_gdbarch) <= 32) |
b25959ec | 3797 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3798 | else |
b25959ec | 3799 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3800 | } |
d7faa9e7 AC |
3801 | if (nr_printable_breakpoints > 0) |
3802 | annotate_field (5); | |
3803 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
3804 | ui_out_table_body (uiout); | |
3805 | if (nr_printable_breakpoints > 0) | |
3806 | annotate_breakpoints_table (); | |
7f3b0473 | 3807 | |
c4093a6a JM |
3808 | ALL_BREAKPOINTS (b) |
3809 | if (bnum == -1 | |
3810 | || bnum == b->number) | |
3811 | { | |
3812 | /* We only print out user settable breakpoints unless the | |
3813 | allflag is set. */ | |
7f3b0473 AC |
3814 | if (allflag || user_settable_breakpoint (b)) |
3815 | print_one_breakpoint (b, &last_addr); | |
c4093a6a JM |
3816 | } |
3817 | ||
3b31d625 | 3818 | do_cleanups (bkpttbl_chain); |
698384cd | 3819 | |
7f3b0473 | 3820 | if (nr_printable_breakpoints == 0) |
c906108c | 3821 | { |
8b93c638 JM |
3822 | if (bnum == -1) |
3823 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
3824 | else | |
3825 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
3826 | bnum); | |
c906108c SS |
3827 | } |
3828 | else | |
c4093a6a JM |
3829 | { |
3830 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
3831 | that a comparison of an unsigned with -1 is always false. */ | |
d1aa2f50 | 3832 | if (last_addr != (CORE_ADDR) -1 && !server_command) |
8b9b9e1a | 3833 | set_next_address (current_gdbarch, last_addr); |
c4093a6a | 3834 | } |
c906108c | 3835 | |
c4093a6a JM |
3836 | /* FIXME? Should this be moved up so that it is only called when |
3837 | there have been breakpoints? */ | |
c906108c SS |
3838 | annotate_breakpoints_table_end (); |
3839 | } | |
3840 | ||
c906108c | 3841 | static void |
fba45db2 | 3842 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
3843 | { |
3844 | int bnum = -1; | |
3845 | ||
3846 | if (bnum_exp) | |
bb518678 | 3847 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3848 | |
3849 | breakpoint_1 (bnum, 0); | |
3850 | } | |
3851 | ||
7a292a7a | 3852 | static void |
fba45db2 | 3853 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
3854 | { |
3855 | int bnum = -1; | |
3856 | ||
3857 | if (bnum_exp) | |
bb518678 | 3858 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3859 | |
3860 | breakpoint_1 (bnum, 1); | |
3861 | } | |
3862 | ||
0d381245 | 3863 | static int |
714835d5 UW |
3864 | breakpoint_has_pc (struct breakpoint *b, |
3865 | CORE_ADDR pc, struct obj_section *section) | |
0d381245 VP |
3866 | { |
3867 | struct bp_location *bl = b->loc; | |
3868 | for (; bl; bl = bl->next) | |
3869 | { | |
3870 | if (bl->address == pc | |
3871 | && (!overlay_debugging || bl->section == section)) | |
3872 | return 1; | |
3873 | } | |
3874 | return 0; | |
3875 | } | |
3876 | ||
c906108c SS |
3877 | /* Print a message describing any breakpoints set at PC. */ |
3878 | ||
3879 | static void | |
714835d5 UW |
3880 | describe_other_breakpoints (CORE_ADDR pc, struct obj_section *section, |
3881 | int thread) | |
c906108c | 3882 | { |
52f0bd74 AC |
3883 | int others = 0; |
3884 | struct breakpoint *b; | |
c906108c SS |
3885 | |
3886 | ALL_BREAKPOINTS (b) | |
0d381245 | 3887 | others += breakpoint_has_pc (b, pc, section); |
c906108c SS |
3888 | if (others > 0) |
3889 | { | |
a3f17187 AC |
3890 | if (others == 1) |
3891 | printf_filtered (_("Note: breakpoint ")); | |
3892 | else /* if (others == ???) */ | |
3893 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 3894 | ALL_BREAKPOINTS (b) |
0d381245 VP |
3895 | if (breakpoint_has_pc (b, pc, section)) |
3896 | { | |
3897 | others--; | |
3898 | printf_filtered ("%d", b->number); | |
3899 | if (b->thread == -1 && thread != -1) | |
3900 | printf_filtered (" (all threads)"); | |
3901 | else if (b->thread != -1) | |
3902 | printf_filtered (" (thread %d)", b->thread); | |
3903 | printf_filtered ("%s%s ", | |
3904 | ((b->enable_state == bp_disabled || | |
3905 | b->enable_state == bp_call_disabled) | |
3906 | ? " (disabled)" | |
3907 | : b->enable_state == bp_permanent | |
3908 | ? " (permanent)" | |
3909 | : ""), | |
3910 | (others > 1) ? "," | |
3911 | : ((others == 1) ? " and" : "")); | |
3912 | } | |
a3f17187 | 3913 | printf_filtered (_("also set at pc ")); |
ed49a04f | 3914 | fputs_filtered (paddress (pc), gdb_stdout); |
c906108c SS |
3915 | printf_filtered (".\n"); |
3916 | } | |
3917 | } | |
3918 | \f | |
3919 | /* Set the default place to put a breakpoint | |
3920 | for the `break' command with no arguments. */ | |
3921 | ||
3922 | void | |
fba45db2 KB |
3923 | set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, |
3924 | int line) | |
c906108c SS |
3925 | { |
3926 | default_breakpoint_valid = valid; | |
3927 | default_breakpoint_address = addr; | |
3928 | default_breakpoint_symtab = symtab; | |
3929 | default_breakpoint_line = line; | |
3930 | } | |
3931 | ||
e4f237da KB |
3932 | /* Return true iff it is meaningful to use the address member of |
3933 | BPT. For some breakpoint types, the address member is irrelevant | |
3934 | and it makes no sense to attempt to compare it to other addresses | |
3935 | (or use it for any other purpose either). | |
3936 | ||
3937 | More specifically, each of the following breakpoint types will always | |
3938 | have a zero valued address and we don't want check_duplicates() to mark | |
3939 | breakpoints of any of these types to be a duplicate of an actual | |
3940 | breakpoint at address zero: | |
3941 | ||
3942 | bp_watchpoint | |
3943 | bp_hardware_watchpoint | |
3944 | bp_read_watchpoint | |
3945 | bp_access_watchpoint | |
fe798b75 | 3946 | bp_catchpoint */ |
e4f237da KB |
3947 | |
3948 | static int | |
3949 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
3950 | { | |
3951 | enum bptype type = bpt->type; | |
3952 | ||
3953 | return (type != bp_watchpoint | |
3954 | && type != bp_hardware_watchpoint | |
3955 | && type != bp_read_watchpoint | |
3956 | && type != bp_access_watchpoint | |
fe798b75 | 3957 | && type != bp_catchpoint); |
e4f237da KB |
3958 | } |
3959 | ||
9f60f21b | 3960 | /* Rescan breakpoints at the same address and section as BPT, |
c906108c | 3961 | marking the first one as "first" and any others as "duplicates". |
c2c6d25f | 3962 | This is so that the bpt instruction is only inserted once. |
9f60f21b JB |
3963 | If we have a permanent breakpoint at the same place as BPT, make |
3964 | that one the official one, and the rest as duplicates. */ | |
c906108c SS |
3965 | |
3966 | static void | |
714835d5 | 3967 | check_duplicates_for (CORE_ADDR address, struct obj_section *section) |
c906108c | 3968 | { |
075f6582 | 3969 | struct bp_location *b; |
52f0bd74 | 3970 | int count = 0; |
075f6582 | 3971 | struct bp_location *perm_bp = 0; |
c906108c | 3972 | |
075f6582 DJ |
3973 | ALL_BP_LOCATIONS (b) |
3974 | if (b->owner->enable_state != bp_disabled | |
075f6582 | 3975 | && b->owner->enable_state != bp_call_disabled |
0d381245 VP |
3976 | && b->enabled |
3977 | && !b->shlib_disabled | |
075f6582 DJ |
3978 | && b->address == address /* address / overlay match */ |
3979 | && (!overlay_debugging || b->section == section) | |
3980 | && breakpoint_address_is_meaningful (b->owner)) | |
c5aa993b | 3981 | { |
c2c6d25f | 3982 | /* Have we found a permanent breakpoint? */ |
075f6582 | 3983 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
3984 | { |
3985 | perm_bp = b; | |
3986 | break; | |
3987 | } | |
3988 | ||
c5aa993b | 3989 | count++; |
075f6582 | 3990 | b->duplicate = count > 1; |
c5aa993b | 3991 | } |
c2c6d25f JM |
3992 | |
3993 | /* If we found a permanent breakpoint at this address, go over the | |
aae64587 PA |
3994 | list again and declare all the other breakpoints there (except |
3995 | other permanent breakpoints) to be the duplicates. */ | |
c2c6d25f JM |
3996 | if (perm_bp) |
3997 | { | |
075f6582 | 3998 | perm_bp->duplicate = 0; |
c2c6d25f JM |
3999 | |
4000 | /* Permanent breakpoint should always be inserted. */ | |
075f6582 | 4001 | if (! perm_bp->inserted) |
8e65ff28 | 4002 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 AC |
4003 | _("allegedly permanent breakpoint is not " |
4004 | "actually inserted")); | |
c2c6d25f | 4005 | |
075f6582 | 4006 | ALL_BP_LOCATIONS (b) |
c2c6d25f JM |
4007 | if (b != perm_bp) |
4008 | { | |
aae64587 PA |
4009 | if (b->owner->enable_state != bp_permanent |
4010 | && b->owner->enable_state != bp_disabled | |
075f6582 | 4011 | && b->owner->enable_state != bp_call_disabled |
0d381245 | 4012 | && b->enabled && !b->shlib_disabled |
075f6582 DJ |
4013 | && b->address == address /* address / overlay match */ |
4014 | && (!overlay_debugging || b->section == section) | |
4015 | && breakpoint_address_is_meaningful (b->owner)) | |
4016 | { | |
4017 | if (b->inserted) | |
4018 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 AC |
4019 | _("another breakpoint was inserted on top of " |
4020 | "a permanent breakpoint")); | |
075f6582 DJ |
4021 | |
4022 | b->duplicate = 1; | |
4023 | } | |
c2c6d25f JM |
4024 | } |
4025 | } | |
c906108c SS |
4026 | } |
4027 | ||
0d381245 VP |
4028 | static void |
4029 | check_duplicates (struct breakpoint *bpt) | |
4030 | { | |
4031 | struct bp_location *bl = bpt->loc; | |
4032 | ||
4033 | if (! breakpoint_address_is_meaningful (bpt)) | |
4034 | return; | |
4035 | ||
4036 | for (; bl; bl = bl->next) | |
4037 | check_duplicates_for (bl->address, bl->section); | |
4038 | } | |
4039 | ||
76897487 KB |
4040 | static void |
4041 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
4042 | int bnum, int have_bnum) | |
4043 | { | |
4044 | char astr1[40]; | |
4045 | char astr2[40]; | |
4046 | ||
bb599908 PH |
4047 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
4048 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 4049 | if (have_bnum) |
8a3fe4f8 | 4050 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
4051 | bnum, astr1, astr2); |
4052 | else | |
8a3fe4f8 | 4053 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
4054 | } |
4055 | ||
4056 | /* Adjust a breakpoint's address to account for architectural constraints | |
4057 | on breakpoint placement. Return the adjusted address. Note: Very | |
4058 | few targets require this kind of adjustment. For most targets, | |
4059 | this function is simply the identity function. */ | |
4060 | ||
4061 | static CORE_ADDR | |
88f7da05 | 4062 | adjust_breakpoint_address (CORE_ADDR bpaddr, enum bptype bptype) |
76897487 KB |
4063 | { |
4064 | if (!gdbarch_adjust_breakpoint_address_p (current_gdbarch)) | |
4065 | { | |
4066 | /* Very few targets need any kind of breakpoint adjustment. */ | |
4067 | return bpaddr; | |
4068 | } | |
88f7da05 KB |
4069 | else if (bptype == bp_watchpoint |
4070 | || bptype == bp_hardware_watchpoint | |
4071 | || bptype == bp_read_watchpoint | |
4072 | || bptype == bp_access_watchpoint | |
fe798b75 | 4073 | || bptype == bp_catchpoint) |
88f7da05 KB |
4074 | { |
4075 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
4076 | have their addresses modified. */ | |
4077 | return bpaddr; | |
4078 | } | |
76897487 KB |
4079 | else |
4080 | { | |
4081 | CORE_ADDR adjusted_bpaddr; | |
4082 | ||
4083 | /* Some targets have architectural constraints on the placement | |
4084 | of breakpoint instructions. Obtain the adjusted address. */ | |
4085 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (current_gdbarch, | |
4086 | bpaddr); | |
4087 | ||
4088 | /* An adjusted breakpoint address can significantly alter | |
4089 | a user's expectations. Print a warning if an adjustment | |
4090 | is required. */ | |
4091 | if (adjusted_bpaddr != bpaddr) | |
4092 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
4093 | ||
4094 | return adjusted_bpaddr; | |
4095 | } | |
4096 | } | |
4097 | ||
7cc221ef DJ |
4098 | /* Allocate a struct bp_location. */ |
4099 | ||
26bb91f3 | 4100 | static struct bp_location * |
39d61571 | 4101 | allocate_bp_location (struct breakpoint *bpt) |
7cc221ef DJ |
4102 | { |
4103 | struct bp_location *loc, *loc_p; | |
4104 | ||
4105 | loc = xmalloc (sizeof (struct bp_location)); | |
4106 | memset (loc, 0, sizeof (*loc)); | |
4107 | ||
e049a4b5 | 4108 | loc->owner = bpt; |
511a6cd4 | 4109 | loc->cond = NULL; |
0d381245 VP |
4110 | loc->shlib_disabled = 0; |
4111 | loc->enabled = 1; | |
e049a4b5 | 4112 | |
39d61571 | 4113 | switch (bpt->type) |
e049a4b5 DJ |
4114 | { |
4115 | case bp_breakpoint: | |
4116 | case bp_until: | |
4117 | case bp_finish: | |
4118 | case bp_longjmp: | |
4119 | case bp_longjmp_resume: | |
4120 | case bp_step_resume: | |
e049a4b5 DJ |
4121 | case bp_watchpoint_scope: |
4122 | case bp_call_dummy: | |
4123 | case bp_shlib_event: | |
4124 | case bp_thread_event: | |
4125 | case bp_overlay_event: | |
e049a4b5 DJ |
4126 | loc->loc_type = bp_loc_software_breakpoint; |
4127 | break; | |
4128 | case bp_hardware_breakpoint: | |
4129 | loc->loc_type = bp_loc_hardware_breakpoint; | |
4130 | break; | |
4131 | case bp_hardware_watchpoint: | |
4132 | case bp_read_watchpoint: | |
4133 | case bp_access_watchpoint: | |
4134 | loc->loc_type = bp_loc_hardware_watchpoint; | |
4135 | break; | |
4136 | case bp_watchpoint: | |
ce78b96d | 4137 | case bp_catchpoint: |
e049a4b5 DJ |
4138 | loc->loc_type = bp_loc_other; |
4139 | break; | |
4140 | default: | |
e2e0b3e5 | 4141 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
4142 | } |
4143 | ||
7cc221ef DJ |
4144 | return loc; |
4145 | } | |
4146 | ||
fe3f5fa8 VP |
4147 | static void free_bp_location (struct bp_location *loc) |
4148 | { | |
4149 | if (loc->cond) | |
4150 | xfree (loc->cond); | |
74960c60 VP |
4151 | |
4152 | if (loc->function_name) | |
4153 | xfree (loc->function_name); | |
4154 | ||
fe3f5fa8 VP |
4155 | xfree (loc); |
4156 | } | |
4157 | ||
0d381245 VP |
4158 | /* Helper to set_raw_breakpoint below. Creates a breakpoint |
4159 | that has type BPTYPE and has no locations as yet. */ | |
c906108c | 4160 | |
c40e75cd | 4161 | static struct breakpoint * |
0d381245 | 4162 | set_raw_breakpoint_without_location (enum bptype bptype) |
c906108c | 4163 | { |
52f0bd74 | 4164 | struct breakpoint *b, *b1; |
c906108c SS |
4165 | |
4166 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4167 | memset (b, 0, sizeof (*b)); | |
2219d63c | 4168 | |
4d28f7a8 | 4169 | b->type = bptype; |
c906108c SS |
4170 | b->language = current_language->la_language; |
4171 | b->input_radix = input_radix; | |
4172 | b->thread = -1; | |
b5de0fa7 | 4173 | b->enable_state = bp_enabled; |
c906108c SS |
4174 | b->next = 0; |
4175 | b->silent = 0; | |
4176 | b->ignore_count = 0; | |
4177 | b->commands = NULL; | |
818dd999 | 4178 | b->frame_id = null_frame_id; |
3a3e9ee3 | 4179 | b->forked_inferior_pid = null_ptid; |
c906108c | 4180 | b->exec_pathname = NULL; |
3086aeae | 4181 | b->ops = NULL; |
0d381245 | 4182 | b->condition_not_parsed = 0; |
c906108c SS |
4183 | |
4184 | /* Add this breakpoint to the end of the chain | |
4185 | so that a list of breakpoints will come out in order | |
4186 | of increasing numbers. */ | |
4187 | ||
4188 | b1 = breakpoint_chain; | |
4189 | if (b1 == 0) | |
4190 | breakpoint_chain = b; | |
4191 | else | |
4192 | { | |
4193 | while (b1->next) | |
4194 | b1 = b1->next; | |
4195 | b1->next = b; | |
4196 | } | |
0d381245 VP |
4197 | return b; |
4198 | } | |
4199 | ||
4200 | /* Initialize loc->function_name. */ | |
4201 | static void | |
4202 | set_breakpoint_location_function (struct bp_location *loc) | |
4203 | { | |
4204 | if (loc->owner->type == bp_breakpoint | |
4205 | || loc->owner->type == bp_hardware_breakpoint) | |
4206 | { | |
4207 | find_pc_partial_function (loc->address, &(loc->function_name), | |
4208 | NULL, NULL); | |
4209 | if (loc->function_name) | |
4210 | loc->function_name = xstrdup (loc->function_name); | |
4211 | } | |
4212 | } | |
4213 | ||
4214 | /* set_raw_breakpoint is a low level routine for allocating and | |
4215 | partially initializing a breakpoint of type BPTYPE. The newly | |
4216 | created breakpoint's address, section, source file name, and line | |
4217 | number are provided by SAL. The newly created and partially | |
4218 | initialized breakpoint is added to the breakpoint chain and | |
4219 | is also returned as the value of this function. | |
4220 | ||
4221 | It is expected that the caller will complete the initialization of | |
4222 | the newly created breakpoint struct as well as output any status | |
4223 | information regarding the creation of a new breakpoint. In | |
4224 | particular, set_raw_breakpoint does NOT set the breakpoint | |
4225 | number! Care should be taken to not allow an error to occur | |
4226 | prior to completing the initialization of the breakpoint. If this | |
4227 | should happen, a bogus breakpoint will be left on the chain. */ | |
4228 | ||
4229 | struct breakpoint * | |
4230 | set_raw_breakpoint (struct symtab_and_line sal, enum bptype bptype) | |
4231 | { | |
4232 | struct breakpoint *b = set_raw_breakpoint_without_location (bptype); | |
4233 | CORE_ADDR adjusted_address; | |
4234 | ||
4235 | /* Adjust the breakpoint's address prior to allocating a location. | |
4236 | Once we call allocate_bp_location(), that mostly uninitialized | |
4237 | location will be placed on the location chain. Adjustment of the | |
8defab1a | 4238 | breakpoint may cause target_read_memory() to be called and we do |
0d381245 VP |
4239 | not want its scan of the location chain to find a breakpoint and |
4240 | location that's only been partially initialized. */ | |
39d61571 | 4241 | adjusted_address = adjust_breakpoint_address (sal.pc, b->type); |
0d381245 | 4242 | |
39d61571 | 4243 | b->loc = allocate_bp_location (b); |
0d381245 VP |
4244 | b->loc->requested_address = sal.pc; |
4245 | b->loc->address = adjusted_address; | |
4246 | ||
4247 | if (sal.symtab == NULL) | |
4248 | b->source_file = NULL; | |
4249 | else | |
4250 | b->source_file = savestring (sal.symtab->filename, | |
4251 | strlen (sal.symtab->filename)); | |
4252 | b->loc->section = sal.section; | |
4253 | b->line_number = sal.line; | |
4254 | ||
4255 | set_breakpoint_location_function (b->loc); | |
c906108c | 4256 | |
c906108c SS |
4257 | breakpoints_changed (); |
4258 | ||
4259 | return b; | |
4260 | } | |
4261 | ||
c2c6d25f JM |
4262 | |
4263 | /* Note that the breakpoint object B describes a permanent breakpoint | |
4264 | instruction, hard-wired into the inferior's code. */ | |
4265 | void | |
4266 | make_breakpoint_permanent (struct breakpoint *b) | |
4267 | { | |
0d381245 | 4268 | struct bp_location *bl; |
b5de0fa7 | 4269 | b->enable_state = bp_permanent; |
c2c6d25f | 4270 | |
0d381245 VP |
4271 | /* By definition, permanent breakpoints are already present in the code. |
4272 | Mark all locations as inserted. For now, make_breakpoint_permanent | |
4273 | is called in just one place, so it's hard to say if it's reasonable | |
4274 | to have permanent breakpoint with multiple locations or not, | |
4275 | but it's easy to implmement. */ | |
4276 | for (bl = b->loc; bl; bl = bl->next) | |
4277 | bl->inserted = 1; | |
c2c6d25f JM |
4278 | } |
4279 | ||
1900040c MS |
4280 | static struct breakpoint * |
4281 | create_internal_breakpoint (CORE_ADDR address, enum bptype type) | |
4282 | { | |
4283 | static int internal_breakpoint_number = -1; | |
4284 | struct symtab_and_line sal; | |
4285 | struct breakpoint *b; | |
4286 | ||
fe39c653 | 4287 | init_sal (&sal); /* initialize to zeroes */ |
1900040c MS |
4288 | |
4289 | sal.pc = address; | |
4290 | sal.section = find_pc_overlay (sal.pc); | |
4291 | ||
4292 | b = set_raw_breakpoint (sal, type); | |
4293 | b->number = internal_breakpoint_number--; | |
4294 | b->disposition = disp_donttouch; | |
4295 | ||
4296 | return b; | |
4297 | } | |
4298 | ||
c906108c SS |
4299 | |
4300 | static void | |
fba45db2 | 4301 | create_longjmp_breakpoint (char *func_name) |
c906108c | 4302 | { |
1900040c | 4303 | struct minimal_symbol *m; |
c906108c | 4304 | |
611c83ae PA |
4305 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
4306 | return; | |
4307 | set_momentary_breakpoint_at_pc (SYMBOL_VALUE_ADDRESS (m), bp_longjmp); | |
b60e7edf | 4308 | update_global_location_list (1); |
c906108c SS |
4309 | } |
4310 | ||
53a5351d JM |
4311 | /* Call this routine when stepping and nexting to enable a breakpoint |
4312 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
4313 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
4314 | ||
4315 | void | |
611c83ae | 4316 | set_longjmp_breakpoint (void) |
c906108c | 4317 | { |
611c83ae | 4318 | if (gdbarch_get_longjmp_target_p (current_gdbarch)) |
c5aa993b | 4319 | { |
611c83ae PA |
4320 | create_longjmp_breakpoint ("longjmp"); |
4321 | create_longjmp_breakpoint ("_longjmp"); | |
4322 | create_longjmp_breakpoint ("siglongjmp"); | |
4323 | create_longjmp_breakpoint ("_siglongjmp"); | |
c5aa993b | 4324 | } |
c906108c SS |
4325 | } |
4326 | ||
611c83ae | 4327 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 4328 | void |
611c83ae | 4329 | delete_longjmp_breakpoint (int thread) |
c906108c | 4330 | { |
611c83ae | 4331 | struct breakpoint *b, *temp; |
c906108c | 4332 | |
611c83ae PA |
4333 | ALL_BREAKPOINTS_SAFE (b, temp) |
4334 | if (b->type == bp_longjmp) | |
4335 | { | |
4336 | if (b->thread == thread) | |
4337 | delete_breakpoint (b); | |
4338 | } | |
c906108c SS |
4339 | } |
4340 | ||
1900040c | 4341 | static void |
25db0f1b | 4342 | create_overlay_event_breakpoint_1 (char *func_name, struct objfile *objfile) |
1900040c MS |
4343 | { |
4344 | struct breakpoint *b; | |
4345 | struct minimal_symbol *m; | |
4346 | ||
25db0f1b | 4347 | if ((m = lookup_minimal_symbol_text (func_name, objfile)) == NULL) |
1900040c MS |
4348 | return; |
4349 | ||
4350 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), | |
4351 | bp_overlay_event); | |
4352 | b->addr_string = xstrdup (func_name); | |
4353 | ||
4354 | if (overlay_debugging == ovly_auto) | |
c02f5703 MS |
4355 | { |
4356 | b->enable_state = bp_enabled; | |
4357 | overlay_events_enabled = 1; | |
4358 | } | |
1900040c | 4359 | else |
c02f5703 MS |
4360 | { |
4361 | b->enable_state = bp_disabled; | |
4362 | overlay_events_enabled = 0; | |
4363 | } | |
b60e7edf | 4364 | update_global_location_list (1); |
1900040c MS |
4365 | } |
4366 | ||
25db0f1b UW |
4367 | static void |
4368 | create_overlay_event_breakpoint (char *func_name) | |
4369 | { | |
4370 | struct objfile *objfile; | |
4371 | ALL_OBJFILES (objfile) | |
4372 | create_overlay_event_breakpoint_1 (func_name, objfile); | |
4373 | } | |
4374 | ||
1900040c MS |
4375 | void |
4376 | enable_overlay_breakpoints (void) | |
4377 | { | |
52f0bd74 | 4378 | struct breakpoint *b; |
1900040c MS |
4379 | |
4380 | ALL_BREAKPOINTS (b) | |
4381 | if (b->type == bp_overlay_event) | |
4382 | { | |
4383 | b->enable_state = bp_enabled; | |
b60e7edf | 4384 | update_global_location_list (1); |
c02f5703 | 4385 | overlay_events_enabled = 1; |
1900040c MS |
4386 | } |
4387 | } | |
4388 | ||
4389 | void | |
4390 | disable_overlay_breakpoints (void) | |
4391 | { | |
52f0bd74 | 4392 | struct breakpoint *b; |
1900040c MS |
4393 | |
4394 | ALL_BREAKPOINTS (b) | |
4395 | if (b->type == bp_overlay_event) | |
4396 | { | |
4397 | b->enable_state = bp_disabled; | |
b60e7edf | 4398 | update_global_location_list (0); |
c02f5703 | 4399 | overlay_events_enabled = 0; |
1900040c MS |
4400 | } |
4401 | } | |
4402 | ||
c4093a6a | 4403 | struct breakpoint * |
fba45db2 | 4404 | create_thread_event_breakpoint (CORE_ADDR address) |
c4093a6a JM |
4405 | { |
4406 | struct breakpoint *b; | |
c4093a6a | 4407 | |
1900040c | 4408 | b = create_internal_breakpoint (address, bp_thread_event); |
c4093a6a | 4409 | |
b5de0fa7 | 4410 | b->enable_state = bp_enabled; |
c4093a6a | 4411 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
b435e160 | 4412 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); |
c4093a6a | 4413 | |
b60e7edf | 4414 | update_global_location_list_nothrow (1); |
74960c60 | 4415 | |
c4093a6a JM |
4416 | return b; |
4417 | } | |
4418 | ||
4419 | void | |
4420 | remove_thread_event_breakpoints (void) | |
4421 | { | |
4422 | struct breakpoint *b, *temp; | |
4423 | ||
4424 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4425 | if (b->type == bp_thread_event) | |
4426 | delete_breakpoint (b); | |
4427 | } | |
4428 | ||
0101ce28 JJ |
4429 | struct captured_parse_breakpoint_args |
4430 | { | |
4431 | char **arg_p; | |
4432 | struct symtabs_and_lines *sals_p; | |
4433 | char ***addr_string_p; | |
4434 | int *not_found_ptr; | |
4435 | }; | |
4436 | ||
4437 | struct lang_and_radix | |
4438 | { | |
4439 | enum language lang; | |
4440 | int radix; | |
4441 | }; | |
4442 | ||
0101ce28 | 4443 | |
cae688ec JJ |
4444 | void |
4445 | remove_solib_event_breakpoints (void) | |
4446 | { | |
4447 | struct breakpoint *b, *temp; | |
4448 | ||
4449 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4450 | if (b->type == bp_shlib_event) | |
4451 | delete_breakpoint (b); | |
4452 | } | |
4453 | ||
4454 | struct breakpoint * | |
4455 | create_solib_event_breakpoint (CORE_ADDR address) | |
4456 | { | |
4457 | struct breakpoint *b; | |
4458 | ||
4459 | b = create_internal_breakpoint (address, bp_shlib_event); | |
b60e7edf | 4460 | update_global_location_list_nothrow (1); |
cae688ec JJ |
4461 | return b; |
4462 | } | |
4463 | ||
4464 | /* Disable any breakpoints that are on code in shared libraries. Only | |
4465 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4466 | ||
4467 | void | |
cb851954 | 4468 | disable_breakpoints_in_shlibs (void) |
cae688ec | 4469 | { |
0d381245 | 4470 | struct bp_location *loc; |
cae688ec | 4471 | |
0d381245 | 4472 | ALL_BP_LOCATIONS (loc) |
cae688ec | 4473 | { |
0d381245 VP |
4474 | struct breakpoint *b = loc->owner; |
4475 | /* We apply the check to all breakpoints, including disabled | |
4476 | for those with loc->duplicate set. This is so that when breakpoint | |
4477 | becomes enabled, or the duplicate is removed, gdb will try to insert | |
4478 | all breakpoints. If we don't set shlib_disabled here, we'll try | |
4479 | to insert those breakpoints and fail. */ | |
a77053c2 | 4480 | if (((b->type == bp_breakpoint) || (b->type == bp_hardware_breakpoint)) |
0d381245 | 4481 | && !loc->shlib_disabled |
a77053c2 | 4482 | #ifdef PC_SOLIB |
0d381245 | 4483 | && PC_SOLIB (loc->address) |
a77053c2 | 4484 | #else |
f5c9a895 | 4485 | && solib_name_from_address (loc->address) |
a77053c2 MK |
4486 | #endif |
4487 | ) | |
0d381245 VP |
4488 | { |
4489 | loc->shlib_disabled = 1; | |
4490 | } | |
cae688ec JJ |
4491 | } |
4492 | } | |
4493 | ||
84acb35a JJ |
4494 | /* Disable any breakpoints that are in in an unloaded shared library. Only |
4495 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4496 | ||
75149521 | 4497 | static void |
84acb35a JJ |
4498 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
4499 | { | |
0d381245 | 4500 | struct bp_location *loc; |
84acb35a JJ |
4501 | int disabled_shlib_breaks = 0; |
4502 | ||
c86cf029 VP |
4503 | /* SunOS a.out shared libraries are always mapped, so do not |
4504 | disable breakpoints; they will only be reported as unloaded | |
4505 | through clear_solib when GDB discards its shared library | |
4506 | list. See clear_solib for more information. */ | |
4507 | if (exec_bfd != NULL | |
4508 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
4509 | return; | |
4510 | ||
0d381245 | 4511 | ALL_BP_LOCATIONS (loc) |
84acb35a | 4512 | { |
0d381245 VP |
4513 | struct breakpoint *b = loc->owner; |
4514 | if ((loc->loc_type == bp_loc_hardware_breakpoint | |
4515 | || loc->loc_type == bp_loc_software_breakpoint) | |
e2dd7057 PP |
4516 | && !loc->shlib_disabled |
4517 | && (b->type == bp_breakpoint || b->type == bp_hardware_breakpoint) | |
4518 | && solib_contains_address_p (solib, loc->address)) | |
84acb35a | 4519 | { |
e2dd7057 PP |
4520 | loc->shlib_disabled = 1; |
4521 | /* At this point, we cannot rely on remove_breakpoint | |
4522 | succeeding so we must mark the breakpoint as not inserted | |
4523 | to prevent future errors occurring in remove_breakpoints. */ | |
4524 | loc->inserted = 0; | |
4525 | if (!disabled_shlib_breaks) | |
4526 | { | |
4527 | target_terminal_ours_for_output (); | |
4528 | warning (_("Temporarily disabling breakpoints for unloaded shared library \"%s\""), | |
4529 | solib->so_name); | |
84acb35a | 4530 | } |
e2dd7057 | 4531 | disabled_shlib_breaks = 1; |
84acb35a JJ |
4532 | } |
4533 | } | |
84acb35a JJ |
4534 | } |
4535 | ||
ce78b96d JB |
4536 | /* FORK & VFORK catchpoints. */ |
4537 | ||
4538 | /* Implement the "insert" breakpoint_ops method for fork catchpoints. */ | |
4539 | ||
c906108c | 4540 | static void |
ce78b96d JB |
4541 | insert_catch_fork (struct breakpoint *b) |
4542 | { | |
4543 | target_insert_fork_catchpoint (PIDGET (inferior_ptid)); | |
4544 | } | |
4545 | ||
4546 | /* Implement the "remove" breakpoint_ops method for fork catchpoints. */ | |
4547 | ||
4548 | static int | |
4549 | remove_catch_fork (struct breakpoint *b) | |
4550 | { | |
4551 | return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); | |
4552 | } | |
4553 | ||
4554 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
4555 | catchpoints. */ | |
4556 | ||
4557 | static int | |
4558 | breakpoint_hit_catch_fork (struct breakpoint *b) | |
4559 | { | |
4560 | return inferior_has_forked (inferior_ptid, &b->forked_inferior_pid); | |
4561 | } | |
4562 | ||
4563 | /* Implement the "print_it" breakpoint_ops method for fork catchpoints. */ | |
4564 | ||
4565 | static enum print_stop_action | |
4566 | print_it_catch_fork (struct breakpoint *b) | |
4567 | { | |
4568 | annotate_catchpoint (b->number); | |
4569 | printf_filtered (_("\nCatchpoint %d (forked process %d), "), | |
4570 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
4571 | return PRINT_SRC_AND_LOC; | |
4572 | } | |
4573 | ||
4574 | /* Implement the "print_one" breakpoint_ops method for fork catchpoints. */ | |
4575 | ||
4576 | static void | |
4577 | print_one_catch_fork (struct breakpoint *b, CORE_ADDR *last_addr) | |
4578 | { | |
79a45b7d TT |
4579 | struct value_print_options opts; |
4580 | ||
4581 | get_user_print_options (&opts); | |
4582 | ||
ce78b96d JB |
4583 | /* Field 4, the address, is omitted (which makes the columns |
4584 | not line up too nicely with the headers, but the effect | |
4585 | is relatively readable). */ | |
79a45b7d | 4586 | if (opts.addressprint) |
ce78b96d JB |
4587 | ui_out_field_skip (uiout, "addr"); |
4588 | annotate_field (5); | |
4589 | ui_out_text (uiout, "fork"); | |
4590 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
4591 | { | |
4592 | ui_out_text (uiout, ", process "); | |
4593 | ui_out_field_int (uiout, "what", | |
4594 | ptid_get_pid (b->forked_inferior_pid)); | |
4595 | ui_out_spaces (uiout, 1); | |
4596 | } | |
4597 | } | |
4598 | ||
4599 | /* Implement the "print_mention" breakpoint_ops method for fork | |
4600 | catchpoints. */ | |
4601 | ||
4602 | static void | |
4603 | print_mention_catch_fork (struct breakpoint *b) | |
4604 | { | |
4605 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
4606 | } | |
4607 | ||
4608 | /* The breakpoint_ops structure to be used in fork catchpoints. */ | |
4609 | ||
4610 | static struct breakpoint_ops catch_fork_breakpoint_ops = | |
4611 | { | |
4612 | insert_catch_fork, | |
4613 | remove_catch_fork, | |
4614 | breakpoint_hit_catch_fork, | |
4615 | print_it_catch_fork, | |
4616 | print_one_catch_fork, | |
4617 | print_mention_catch_fork | |
4618 | }; | |
4619 | ||
4620 | /* Implement the "insert" breakpoint_ops method for vfork catchpoints. */ | |
4621 | ||
4622 | static void | |
4623 | insert_catch_vfork (struct breakpoint *b) | |
4624 | { | |
4625 | target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); | |
4626 | } | |
4627 | ||
4628 | /* Implement the "remove" breakpoint_ops method for vfork catchpoints. */ | |
4629 | ||
4630 | static int | |
4631 | remove_catch_vfork (struct breakpoint *b) | |
4632 | { | |
4633 | return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); | |
4634 | } | |
4635 | ||
4636 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
4637 | catchpoints. */ | |
4638 | ||
4639 | static int | |
4640 | breakpoint_hit_catch_vfork (struct breakpoint *b) | |
4641 | { | |
4642 | return inferior_has_vforked (inferior_ptid, &b->forked_inferior_pid); | |
4643 | } | |
4644 | ||
4645 | /* Implement the "print_it" breakpoint_ops method for vfork catchpoints. */ | |
4646 | ||
4647 | static enum print_stop_action | |
4648 | print_it_catch_vfork (struct breakpoint *b) | |
4649 | { | |
4650 | annotate_catchpoint (b->number); | |
4651 | printf_filtered (_("\nCatchpoint %d (vforked process %d), "), | |
4652 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
4653 | return PRINT_SRC_AND_LOC; | |
4654 | } | |
4655 | ||
4656 | /* Implement the "print_one" breakpoint_ops method for vfork catchpoints. */ | |
4657 | ||
4658 | static void | |
4659 | print_one_catch_vfork (struct breakpoint *b, CORE_ADDR *last_addr) | |
4660 | { | |
79a45b7d TT |
4661 | struct value_print_options opts; |
4662 | ||
4663 | get_user_print_options (&opts); | |
ce78b96d JB |
4664 | /* Field 4, the address, is omitted (which makes the columns |
4665 | not line up too nicely with the headers, but the effect | |
4666 | is relatively readable). */ | |
79a45b7d | 4667 | if (opts.addressprint) |
ce78b96d JB |
4668 | ui_out_field_skip (uiout, "addr"); |
4669 | annotate_field (5); | |
4670 | ui_out_text (uiout, "vfork"); | |
4671 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
4672 | { | |
4673 | ui_out_text (uiout, ", process "); | |
4674 | ui_out_field_int (uiout, "what", | |
4675 | ptid_get_pid (b->forked_inferior_pid)); | |
4676 | ui_out_spaces (uiout, 1); | |
4677 | } | |
4678 | } | |
4679 | ||
4680 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
4681 | catchpoints. */ | |
4682 | ||
4683 | static void | |
4684 | print_mention_catch_vfork (struct breakpoint *b) | |
4685 | { | |
4686 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
4687 | } | |
4688 | ||
4689 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ | |
4690 | ||
4691 | static struct breakpoint_ops catch_vfork_breakpoint_ops = | |
4692 | { | |
4693 | insert_catch_vfork, | |
4694 | remove_catch_vfork, | |
4695 | breakpoint_hit_catch_vfork, | |
4696 | print_it_catch_vfork, | |
4697 | print_one_catch_vfork, | |
4698 | print_mention_catch_vfork | |
4699 | }; | |
4700 | ||
4701 | /* Create a new breakpoint of the bp_catchpoint kind and return it. | |
4702 | ||
4703 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
4704 | If COND_STRING is not NULL, then store it in the breakpoint. | |
4705 | OPS, if not NULL, is the breakpoint_ops structure associated | |
4706 | to the catchpoint. */ | |
4707 | ||
4708 | static struct breakpoint * | |
4709 | create_catchpoint (int tempflag, char *cond_string, | |
4710 | struct breakpoint_ops *ops) | |
c906108c | 4711 | { |
c5aa993b JM |
4712 | struct symtab_and_line sal; |
4713 | struct breakpoint *b; | |
c5aa993b | 4714 | |
fe39c653 | 4715 | init_sal (&sal); |
c906108c SS |
4716 | sal.pc = 0; |
4717 | sal.symtab = NULL; | |
4718 | sal.line = 0; | |
c5aa993b | 4719 | |
ce78b96d | 4720 | b = set_raw_breakpoint (sal, bp_catchpoint); |
c906108c SS |
4721 | set_breakpoint_count (breakpoint_count + 1); |
4722 | b->number = breakpoint_count; | |
ce78b96d | 4723 | |
53a5351d JM |
4724 | b->cond_string = (cond_string == NULL) ? |
4725 | NULL : savestring (cond_string, strlen (cond_string)); | |
ce78b96d | 4726 | b->thread = -1; |
c906108c | 4727 | b->addr_string = NULL; |
b5de0fa7 EZ |
4728 | b->enable_state = bp_enabled; |
4729 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
ce78b96d | 4730 | b->ops = ops; |
c5aa993b | 4731 | |
c906108c | 4732 | mention (b); |
ce78b96d | 4733 | update_global_location_list (1); |
c906108c | 4734 | |
ce78b96d | 4735 | return b; |
c906108c | 4736 | } |
c5aa993b | 4737 | |
9b70b993 | 4738 | static void |
ce78b96d JB |
4739 | create_fork_vfork_event_catchpoint (int tempflag, char *cond_string, |
4740 | struct breakpoint_ops *ops) | |
c906108c | 4741 | { |
ce78b96d JB |
4742 | struct breakpoint *b = create_catchpoint (tempflag, cond_string, ops); |
4743 | ||
4744 | /* FIXME: We should put this information in a breakpoint private data | |
4745 | area. */ | |
4746 | b->forked_inferior_pid = null_ptid; | |
c906108c SS |
4747 | } |
4748 | ||
fe798b75 JB |
4749 | /* Exec catchpoints. */ |
4750 | ||
9b70b993 | 4751 | static void |
fe798b75 | 4752 | insert_catch_exec (struct breakpoint *b) |
c906108c | 4753 | { |
fe798b75 JB |
4754 | target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
4755 | } | |
c906108c | 4756 | |
fe798b75 JB |
4757 | static int |
4758 | remove_catch_exec (struct breakpoint *b) | |
4759 | { | |
4760 | return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); | |
4761 | } | |
c906108c | 4762 | |
fe798b75 JB |
4763 | static int |
4764 | breakpoint_hit_catch_exec (struct breakpoint *b) | |
4765 | { | |
4766 | return inferior_has_execd (inferior_ptid, &b->exec_pathname); | |
4767 | } | |
c906108c | 4768 | |
fe798b75 JB |
4769 | static enum print_stop_action |
4770 | print_it_catch_exec (struct breakpoint *b) | |
4771 | { | |
4772 | annotate_catchpoint (b->number); | |
4773 | printf_filtered (_("\nCatchpoint %d (exec'd %s), "), b->number, | |
4774 | b->exec_pathname); | |
4775 | return PRINT_SRC_AND_LOC; | |
c906108c SS |
4776 | } |
4777 | ||
fe798b75 JB |
4778 | static void |
4779 | print_one_catch_exec (struct breakpoint *b, CORE_ADDR *last_addr) | |
4780 | { | |
4781 | struct value_print_options opts; | |
4782 | ||
4783 | get_user_print_options (&opts); | |
4784 | ||
4785 | /* Field 4, the address, is omitted (which makes the columns | |
4786 | not line up too nicely with the headers, but the effect | |
4787 | is relatively readable). */ | |
4788 | if (opts.addressprint) | |
4789 | ui_out_field_skip (uiout, "addr"); | |
4790 | annotate_field (5); | |
4791 | ui_out_text (uiout, "exec"); | |
4792 | if (b->exec_pathname != NULL) | |
4793 | { | |
4794 | ui_out_text (uiout, ", program \""); | |
4795 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
4796 | ui_out_text (uiout, "\" "); | |
4797 | } | |
4798 | } | |
4799 | ||
4800 | static void | |
4801 | print_mention_catch_exec (struct breakpoint *b) | |
4802 | { | |
4803 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
4804 | } | |
4805 | ||
4806 | static struct breakpoint_ops catch_exec_breakpoint_ops = | |
4807 | { | |
4808 | insert_catch_exec, | |
4809 | remove_catch_exec, | |
4810 | breakpoint_hit_catch_exec, | |
4811 | print_it_catch_exec, | |
4812 | print_one_catch_exec, | |
4813 | print_mention_catch_exec | |
4814 | }; | |
4815 | ||
c906108c | 4816 | static int |
fba45db2 | 4817 | hw_breakpoint_used_count (void) |
c906108c | 4818 | { |
52f0bd74 | 4819 | struct breakpoint *b; |
c906108c SS |
4820 | int i = 0; |
4821 | ||
4822 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4823 | { |
d6b74ac4 | 4824 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
c5aa993b JM |
4825 | i++; |
4826 | } | |
c906108c SS |
4827 | |
4828 | return i; | |
4829 | } | |
4830 | ||
4831 | static int | |
fba45db2 | 4832 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 4833 | { |
52f0bd74 | 4834 | struct breakpoint *b; |
c906108c SS |
4835 | int i = 0; |
4836 | ||
4837 | *other_type_used = 0; | |
4838 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4839 | { |
468d015d | 4840 | if (breakpoint_enabled (b)) |
c5aa993b JM |
4841 | { |
4842 | if (b->type == type) | |
4843 | i++; | |
4844 | else if ((b->type == bp_hardware_watchpoint || | |
4845 | b->type == bp_read_watchpoint || | |
468d015d | 4846 | b->type == bp_access_watchpoint)) |
c5aa993b JM |
4847 | *other_type_used = 1; |
4848 | } | |
4849 | } | |
c906108c SS |
4850 | return i; |
4851 | } | |
4852 | ||
c906108c | 4853 | void |
fba45db2 | 4854 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 4855 | { |
c5aa993b | 4856 | struct breakpoint *b; |
c906108c SS |
4857 | |
4858 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4859 | { |
4860 | if (((b->type == bp_watchpoint) | |
4861 | || (b->type == bp_hardware_watchpoint) | |
4862 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 4863 | || (b->type == bp_access_watchpoint)) |
468d015d | 4864 | && breakpoint_enabled (b)) |
c5aa993b | 4865 | { |
b5de0fa7 | 4866 | b->enable_state = bp_call_disabled; |
b60e7edf | 4867 | update_global_location_list (0); |
c5aa993b JM |
4868 | } |
4869 | } | |
c906108c SS |
4870 | } |
4871 | ||
4872 | void | |
fba45db2 | 4873 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 4874 | { |
c5aa993b | 4875 | struct breakpoint *b; |
c906108c SS |
4876 | |
4877 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4878 | { |
4879 | if (((b->type == bp_watchpoint) | |
4880 | || (b->type == bp_hardware_watchpoint) | |
4881 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 4882 | || (b->type == bp_access_watchpoint)) |
b5de0fa7 | 4883 | && (b->enable_state == bp_call_disabled)) |
c5aa993b | 4884 | { |
b5de0fa7 | 4885 | b->enable_state = bp_enabled; |
b60e7edf | 4886 | update_global_location_list (1); |
c5aa993b JM |
4887 | } |
4888 | } | |
c906108c SS |
4889 | } |
4890 | ||
4891 | ||
4892 | /* Set a breakpoint that will evaporate an end of command | |
4893 | at address specified by SAL. | |
4894 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
4895 | ||
4896 | struct breakpoint * | |
818dd999 | 4897 | set_momentary_breakpoint (struct symtab_and_line sal, struct frame_id frame_id, |
fba45db2 | 4898 | enum bptype type) |
c906108c | 4899 | { |
52f0bd74 | 4900 | struct breakpoint *b; |
4d28f7a8 | 4901 | b = set_raw_breakpoint (sal, type); |
b5de0fa7 EZ |
4902 | b->enable_state = bp_enabled; |
4903 | b->disposition = disp_donttouch; | |
818dd999 | 4904 | b->frame_id = frame_id; |
c906108c SS |
4905 | |
4906 | /* If we're debugging a multi-threaded program, then we | |
4907 | want momentary breakpoints to be active in only a | |
4908 | single thread of control. */ | |
39f77062 KB |
4909 | if (in_thread_list (inferior_ptid)) |
4910 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 4911 | |
b60e7edf | 4912 | update_global_location_list_nothrow (1); |
74960c60 | 4913 | |
c906108c SS |
4914 | return b; |
4915 | } | |
611c83ae PA |
4916 | |
4917 | struct breakpoint * | |
4918 | set_momentary_breakpoint_at_pc (CORE_ADDR pc, enum bptype type) | |
4919 | { | |
4920 | struct symtab_and_line sal; | |
4921 | ||
4922 | sal = find_pc_line (pc, 0); | |
4923 | sal.pc = pc; | |
4924 | sal.section = find_pc_overlay (pc); | |
4925 | sal.explicit_pc = 1; | |
4926 | ||
4927 | return set_momentary_breakpoint (sal, null_frame_id, type); | |
4928 | } | |
c906108c | 4929 | \f |
c5aa993b | 4930 | |
c906108c SS |
4931 | /* Tell the user we have just set a breakpoint B. */ |
4932 | ||
4933 | static void | |
fba45db2 | 4934 | mention (struct breakpoint *b) |
c906108c SS |
4935 | { |
4936 | int say_where = 0; | |
fa8a61dc | 4937 | struct cleanup *ui_out_chain; |
79a45b7d TT |
4938 | struct value_print_options opts; |
4939 | ||
4940 | get_user_print_options (&opts); | |
8b93c638 | 4941 | |
9a4105ab AC |
4942 | /* FIXME: This is misplaced; mention() is called by things (like |
4943 | hitting a watchpoint) other than breakpoint creation. It should | |
4944 | be possible to clean this up and at the same time replace the | |
7f4b89d1 | 4945 | random calls to breakpoint_changed with this hook. */ |
383f836e | 4946 | observer_notify_breakpoint_created (b->number); |
c906108c | 4947 | |
3086aeae DJ |
4948 | if (b->ops != NULL && b->ops->print_mention != NULL) |
4949 | b->ops->print_mention (b); | |
4950 | else | |
4951 | switch (b->type) | |
4952 | { | |
4953 | case bp_none: | |
a3f17187 | 4954 | printf_filtered (_("(apparently deleted?) Eventpoint %d: "), b->number); |
3086aeae DJ |
4955 | break; |
4956 | case bp_watchpoint: | |
4957 | ui_out_text (uiout, "Watchpoint "); | |
4958 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4959 | ui_out_field_int (uiout, "number", b->number); | |
4960 | ui_out_text (uiout, ": "); | |
fa8a61dc | 4961 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
4962 | do_cleanups (ui_out_chain); |
4963 | break; | |
4964 | case bp_hardware_watchpoint: | |
4965 | ui_out_text (uiout, "Hardware watchpoint "); | |
4966 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4967 | ui_out_field_int (uiout, "number", b->number); | |
4968 | ui_out_text (uiout, ": "); | |
fa8a61dc | 4969 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
4970 | do_cleanups (ui_out_chain); |
4971 | break; | |
4972 | case bp_read_watchpoint: | |
4973 | ui_out_text (uiout, "Hardware read watchpoint "); | |
4974 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
4975 | ui_out_field_int (uiout, "number", b->number); | |
4976 | ui_out_text (uiout, ": "); | |
fa8a61dc | 4977 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
4978 | do_cleanups (ui_out_chain); |
4979 | break; | |
4980 | case bp_access_watchpoint: | |
4981 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
4982 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
4983 | ui_out_field_int (uiout, "number", b->number); | |
4984 | ui_out_text (uiout, ": "); | |
fa8a61dc | 4985 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
4986 | do_cleanups (ui_out_chain); |
4987 | break; | |
4988 | case bp_breakpoint: | |
4989 | if (ui_out_is_mi_like_p (uiout)) | |
4990 | { | |
4991 | say_where = 0; | |
4992 | break; | |
4993 | } | |
2cec12e5 AR |
4994 | if (b->disposition == disp_del) |
4995 | printf_filtered (_("Temporary breakpoint")); | |
4996 | else | |
4997 | printf_filtered (_("Breakpoint")); | |
4998 | printf_filtered (_(" %d"), b->number); | |
3086aeae DJ |
4999 | say_where = 1; |
5000 | break; | |
5001 | case bp_hardware_breakpoint: | |
5002 | if (ui_out_is_mi_like_p (uiout)) | |
5003 | { | |
5004 | say_where = 0; | |
5005 | break; | |
5006 | } | |
a3f17187 | 5007 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); |
3086aeae DJ |
5008 | say_where = 1; |
5009 | break; | |
3086aeae DJ |
5010 | |
5011 | case bp_until: | |
5012 | case bp_finish: | |
5013 | case bp_longjmp: | |
5014 | case bp_longjmp_resume: | |
5015 | case bp_step_resume: | |
3086aeae DJ |
5016 | case bp_call_dummy: |
5017 | case bp_watchpoint_scope: | |
5018 | case bp_shlib_event: | |
5019 | case bp_thread_event: | |
5020 | case bp_overlay_event: | |
5021 | break; | |
5022 | } | |
c906108c | 5023 | |
c906108c SS |
5024 | if (say_where) |
5025 | { | |
a3f17187 AC |
5026 | /* i18n: cagney/2005-02-11: Below needs to be merged into a |
5027 | single string. */ | |
0d381245 | 5028 | if (b->loc == NULL) |
c906108c | 5029 | { |
a3f17187 | 5030 | printf_filtered (_(" (%s) pending."), b->addr_string); |
0101ce28 JJ |
5031 | } |
5032 | else | |
5033 | { | |
79a45b7d | 5034 | if (opts.addressprint || b->source_file == NULL) |
0101ce28 JJ |
5035 | { |
5036 | printf_filtered (" at "); | |
ed49a04f | 5037 | fputs_filtered (paddress (b->loc->address), gdb_stdout); |
0101ce28 JJ |
5038 | } |
5039 | if (b->source_file) | |
5040 | printf_filtered (": file %s, line %d.", | |
5041 | b->source_file, b->line_number); | |
0d381245 VP |
5042 | |
5043 | if (b->loc->next) | |
5044 | { | |
5045 | struct bp_location *loc = b->loc; | |
5046 | int n = 0; | |
5047 | for (; loc; loc = loc->next) | |
5048 | ++n; | |
5049 | printf_filtered (" (%d locations)", n); | |
5050 | } | |
5051 | ||
c906108c | 5052 | } |
c906108c | 5053 | } |
9dc5e2a9 | 5054 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 5055 | return; |
c906108c SS |
5056 | printf_filtered ("\n"); |
5057 | } | |
c906108c | 5058 | \f |
c5aa993b | 5059 | |
0d381245 | 5060 | static struct bp_location * |
39d61571 | 5061 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
5062 | const struct symtab_and_line *sal) |
5063 | { | |
5064 | struct bp_location *loc, **tmp; | |
5065 | ||
39d61571 | 5066 | loc = allocate_bp_location (b); |
0d381245 VP |
5067 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
5068 | ; | |
5069 | *tmp = loc; | |
5070 | loc->requested_address = sal->pc; | |
39d61571 | 5071 | loc->address = adjust_breakpoint_address (loc->requested_address, b->type); |
0d381245 VP |
5072 | loc->section = sal->section; |
5073 | ||
5074 | set_breakpoint_location_function (loc); | |
5075 | return loc; | |
5076 | } | |
514f746b AR |
5077 | \f |
5078 | ||
5079 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
5080 | return 0 otherwise. */ | |
5081 | ||
5082 | static int | |
5083 | bp_loc_is_permanent (struct bp_location *loc) | |
5084 | { | |
5085 | int len; | |
5086 | CORE_ADDR addr; | |
5087 | const gdb_byte *brk; | |
5088 | gdb_byte *target_mem; | |
939c61fa JK |
5089 | struct cleanup *cleanup; |
5090 | int retval = 0; | |
514f746b AR |
5091 | |
5092 | gdb_assert (loc != NULL); | |
5093 | ||
5094 | addr = loc->address; | |
5095 | brk = gdbarch_breakpoint_from_pc (current_gdbarch, &addr, &len); | |
5096 | ||
939c61fa JK |
5097 | /* Software breakpoints unsupported? */ |
5098 | if (brk == NULL) | |
5099 | return 0; | |
5100 | ||
514f746b AR |
5101 | target_mem = alloca (len); |
5102 | ||
939c61fa JK |
5103 | /* Enable the automatic memory restoration from breakpoints while |
5104 | we read the memory. Otherwise we could say about our temporary | |
5105 | breakpoints they are permanent. */ | |
5106 | cleanup = make_show_memory_breakpoints_cleanup (0); | |
5107 | ||
514f746b AR |
5108 | if (target_read_memory (loc->address, target_mem, len) == 0 |
5109 | && memcmp (target_mem, brk, len) == 0) | |
939c61fa | 5110 | retval = 1; |
514f746b | 5111 | |
939c61fa JK |
5112 | do_cleanups (cleanup); |
5113 | ||
5114 | return retval; | |
514f746b AR |
5115 | } |
5116 | ||
5117 | ||
c3f6f71d | 5118 | |
018d34a4 VP |
5119 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
5120 | as textual description of the location, and COND_STRING | |
db107f19 | 5121 | as condition expression. */ |
018d34a4 VP |
5122 | |
5123 | static void | |
0d381245 | 5124 | create_breakpoint (struct symtabs_and_lines sals, char *addr_string, |
018d34a4 VP |
5125 | char *cond_string, |
5126 | enum bptype type, enum bpdisp disposition, | |
604133b5 | 5127 | int thread, int ignore_count, |
41447f92 | 5128 | struct breakpoint_ops *ops, int from_tty, int enabled) |
018d34a4 | 5129 | { |
0d381245 VP |
5130 | struct breakpoint *b = NULL; |
5131 | int i; | |
018d34a4 VP |
5132 | |
5133 | if (type == bp_hardware_breakpoint) | |
5134 | { | |
5135 | int i = hw_breakpoint_used_count (); | |
5136 | int target_resources_ok = | |
5137 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
5138 | i + 1, 0); | |
5139 | if (target_resources_ok == 0) | |
5140 | error (_("No hardware breakpoint support in the target.")); | |
5141 | else if (target_resources_ok < 0) | |
5142 | error (_("Hardware breakpoints used exceeds limit.")); | |
5143 | } | |
5144 | ||
0d381245 VP |
5145 | for (i = 0; i < sals.nelts; ++i) |
5146 | { | |
5147 | struct symtab_and_line sal = sals.sals[i]; | |
5148 | struct bp_location *loc; | |
5149 | ||
5150 | if (from_tty) | |
5151 | describe_other_breakpoints (sal.pc, sal.section, thread); | |
5152 | ||
5153 | if (i == 0) | |
5154 | { | |
5155 | b = set_raw_breakpoint (sal, type); | |
5156 | set_breakpoint_count (breakpoint_count + 1); | |
5157 | b->number = breakpoint_count; | |
5158 | b->thread = thread; | |
018d34a4 | 5159 | |
0d381245 VP |
5160 | b->cond_string = cond_string; |
5161 | b->ignore_count = ignore_count; | |
41447f92 | 5162 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 5163 | b->disposition = disposition; |
018d34a4 | 5164 | |
0d381245 VP |
5165 | loc = b->loc; |
5166 | } | |
5167 | else | |
018d34a4 | 5168 | { |
39d61571 | 5169 | loc = add_location_to_breakpoint (b, &sal); |
0d381245 VP |
5170 | } |
5171 | ||
514f746b AR |
5172 | if (bp_loc_is_permanent (loc)) |
5173 | make_breakpoint_permanent (b); | |
5174 | ||
0d381245 VP |
5175 | if (b->cond_string) |
5176 | { | |
5177 | char *arg = b->cond_string; | |
d32a6982 | 5178 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); |
0d381245 | 5179 | if (*arg) |
db107f19 | 5180 | error (_("Garbage %s follows condition"), arg); |
018d34a4 | 5181 | } |
0d381245 | 5182 | } |
018d34a4 VP |
5183 | |
5184 | if (addr_string) | |
5185 | b->addr_string = addr_string; | |
5186 | else | |
5187 | /* addr_string has to be used or breakpoint_re_set will delete | |
5188 | me. */ | |
5189 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); | |
5190 | ||
604133b5 | 5191 | b->ops = ops; |
018d34a4 VP |
5192 | mention (b); |
5193 | } | |
5194 | ||
ed0616c6 VP |
5195 | /* Remove element at INDEX_TO_REMOVE from SAL, shifting other |
5196 | elements to fill the void space. */ | |
2c0b251b PA |
5197 | static void |
5198 | remove_sal (struct symtabs_and_lines *sal, int index_to_remove) | |
ed0616c6 VP |
5199 | { |
5200 | int i = index_to_remove+1; | |
5201 | int last_index = sal->nelts-1; | |
5202 | ||
5203 | for (;i <= last_index; ++i) | |
5204 | sal->sals[i-1] = sal->sals[i]; | |
5205 | ||
5206 | --(sal->nelts); | |
5207 | } | |
5208 | ||
5209 | /* If appropriate, obtains all sals that correspond | |
5210 | to the same file and line as SAL. This is done | |
5211 | only if SAL does not have explicit PC and has | |
5212 | line and file information. If we got just a single | |
5213 | expanded sal, return the original. | |
5214 | ||
5215 | Otherwise, if SAL.explicit_line is not set, filter out | |
5216 | all sals for which the name of enclosing function | |
5217 | is different from SAL. This makes sure that if we have | |
5218 | breakpoint originally set in template instantiation, say | |
5219 | foo<int>(), we won't expand SAL to locations at the same | |
5220 | line in all existing instantiations of 'foo'. | |
5221 | ||
5222 | */ | |
2c0b251b | 5223 | static struct symtabs_and_lines |
ed0616c6 VP |
5224 | expand_line_sal_maybe (struct symtab_and_line sal) |
5225 | { | |
5226 | struct symtabs_and_lines expanded; | |
5227 | CORE_ADDR original_pc = sal.pc; | |
5228 | char *original_function = NULL; | |
5229 | int found; | |
5230 | int i; | |
5231 | ||
5232 | /* If we have explicit pc, don't expand. | |
5233 | If we have no line number, we can't expand. */ | |
5234 | if (sal.explicit_pc || sal.line == 0 || sal.symtab == NULL) | |
5235 | { | |
5236 | expanded.nelts = 1; | |
5237 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5238 | expanded.sals[0] = sal; | |
5239 | return expanded; | |
5240 | } | |
5241 | ||
5242 | sal.pc = 0; | |
5243 | find_pc_partial_function (original_pc, &original_function, NULL, NULL); | |
5244 | ||
5245 | expanded = expand_line_sal (sal); | |
5246 | if (expanded.nelts == 1) | |
5247 | { | |
5248 | /* We had one sal, we got one sal. Without futher | |
5249 | processing, just return the original sal. */ | |
5250 | xfree (expanded.sals); | |
5251 | expanded.nelts = 1; | |
5252 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5253 | sal.pc = original_pc; | |
5254 | expanded.sals[0] = sal; | |
5255 | return expanded; | |
5256 | } | |
5257 | ||
5258 | if (!sal.explicit_line) | |
5259 | { | |
5260 | CORE_ADDR func_addr, func_end; | |
5261 | for (i = 0; i < expanded.nelts; ++i) | |
5262 | { | |
5263 | CORE_ADDR pc = expanded.sals[i].pc; | |
5264 | char *this_function; | |
5265 | if (find_pc_partial_function (pc, &this_function, | |
5266 | &func_addr, &func_end)) | |
5267 | { | |
5268 | if (this_function && | |
5269 | strcmp (this_function, original_function) != 0) | |
5270 | { | |
5271 | remove_sal (&expanded, i); | |
5272 | --i; | |
5273 | } | |
5274 | else if (func_addr == pc) | |
5275 | { | |
5276 | /* We're at beginning of a function, and should | |
5277 | skip prologue. */ | |
5278 | struct symbol *sym = find_pc_function (pc); | |
5279 | if (sym) | |
5280 | expanded.sals[i] = find_function_start_sal (sym, 1); | |
5281 | else | |
5282 | expanded.sals[i].pc | |
5283 | = gdbarch_skip_prologue (current_gdbarch, pc); | |
5284 | } | |
5285 | } | |
5286 | } | |
5287 | } | |
5288 | ||
5289 | ||
5290 | if (expanded.nelts <= 1) | |
5291 | { | |
5292 | /* This is un ugly workaround. If we get zero | |
5293 | expanded sals then something is really wrong. | |
5294 | Fix that by returnign the original sal. */ | |
5295 | xfree (expanded.sals); | |
5296 | expanded.nelts = 1; | |
5297 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5298 | sal.pc = original_pc; | |
5299 | expanded.sals[0] = sal; | |
5300 | return expanded; | |
5301 | } | |
5302 | ||
5303 | if (original_pc) | |
5304 | { | |
5305 | found = 0; | |
5306 | for (i = 0; i < expanded.nelts; ++i) | |
5307 | if (expanded.sals[i].pc == original_pc) | |
5308 | { | |
5309 | found = 1; | |
5310 | break; | |
5311 | } | |
5312 | gdb_assert (found); | |
5313 | } | |
5314 | ||
5315 | return expanded; | |
5316 | } | |
5317 | ||
018d34a4 VP |
5318 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
5319 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
5320 | value. COND_STRING, if not NULL, specified the condition to be | |
5321 | used for all breakpoints. Essentially the only case where | |
5322 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
5323 | function. In that case, it's still not possible to specify | |
5324 | separate conditions for different overloaded functions, so | |
5325 | we take just a single condition string. | |
5326 | ||
c3f6f71d | 5327 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 5328 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
5329 | array contents). If the function fails (error() is called), the |
5330 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
5331 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
5332 | |
5333 | static void | |
c3f6f71d | 5334 | create_breakpoints (struct symtabs_and_lines sals, char **addr_string, |
018d34a4 | 5335 | char *cond_string, |
c3f6f71d | 5336 | enum bptype type, enum bpdisp disposition, |
604133b5 | 5337 | int thread, int ignore_count, |
41447f92 VP |
5338 | struct breakpoint_ops *ops, int from_tty, |
5339 | int enabled) | |
c906108c | 5340 | { |
018d34a4 VP |
5341 | int i; |
5342 | for (i = 0; i < sals.nelts; ++i) | |
c3f6f71d | 5343 | { |
ed0616c6 VP |
5344 | struct symtabs_and_lines expanded = |
5345 | expand_line_sal_maybe (sals.sals[i]); | |
0d381245 | 5346 | |
ed0616c6 | 5347 | create_breakpoint (expanded, addr_string[i], |
018d34a4 | 5348 | cond_string, type, disposition, |
41447f92 | 5349 | thread, ignore_count, ops, from_tty, enabled); |
c3f6f71d | 5350 | } |
74960c60 | 5351 | |
b60e7edf | 5352 | update_global_location_list (1); |
c3f6f71d | 5353 | } |
c906108c | 5354 | |
c3f6f71d JM |
5355 | /* Parse ARG which is assumed to be a SAL specification possibly |
5356 | followed by conditionals. On return, SALS contains an array of SAL | |
5357 | addresses found. ADDR_STRING contains a vector of (canonical) | |
5358 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 5359 | |
b9362cc7 | 5360 | static void |
c3f6f71d JM |
5361 | parse_breakpoint_sals (char **address, |
5362 | struct symtabs_and_lines *sals, | |
0101ce28 JJ |
5363 | char ***addr_string, |
5364 | int *not_found_ptr) | |
c3f6f71d JM |
5365 | { |
5366 | char *addr_start = *address; | |
5367 | *addr_string = NULL; | |
5368 | /* If no arg given, or if first arg is 'if ', use the default | |
5369 | breakpoint. */ | |
5370 | if ((*address) == NULL | |
5371 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
5372 | { |
5373 | if (default_breakpoint_valid) | |
5374 | { | |
c3f6f71d | 5375 | struct symtab_and_line sal; |
fe39c653 | 5376 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 5377 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
5378 | xmalloc (sizeof (struct symtab_and_line)); |
5379 | sal.pc = default_breakpoint_address; | |
5380 | sal.line = default_breakpoint_line; | |
5381 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 5382 | sal.section = find_pc_overlay (sal.pc); |
c3f6f71d JM |
5383 | sals->sals[0] = sal; |
5384 | sals->nelts = 1; | |
c906108c SS |
5385 | } |
5386 | else | |
8a3fe4f8 | 5387 | error (_("No default breakpoint address now.")); |
c906108c SS |
5388 | } |
5389 | else | |
5390 | { | |
c906108c | 5391 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
5392 | current_source_symtab (which is decode_line_1's default). This |
5393 | should produce the results we want almost all of the time while | |
1aeae86e AF |
5394 | leaving default_breakpoint_* alone. |
5395 | ObjC: However, don't match an Objective-C method name which | |
5396 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 5397 | |
c214a6fd | 5398 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 5399 | |
c906108c | 5400 | if (default_breakpoint_valid |
0378c332 | 5401 | && (!cursal.symtab |
1aeae86e AF |
5402 | || ((strchr ("+-", (*address)[0]) != NULL) |
5403 | && ((*address)[1] != '[')))) | |
c3f6f71d | 5404 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
0101ce28 JJ |
5405 | default_breakpoint_line, addr_string, |
5406 | not_found_ptr); | |
c906108c | 5407 | else |
0101ce28 JJ |
5408 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
5409 | addr_string, not_found_ptr); | |
c906108c | 5410 | } |
c3f6f71d JM |
5411 | /* For any SAL that didn't have a canonical string, fill one in. */ |
5412 | if (sals->nelts > 0 && *addr_string == NULL) | |
5413 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
5414 | if (addr_start != (*address)) | |
c906108c | 5415 | { |
c3f6f71d JM |
5416 | int i; |
5417 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 5418 | { |
c3f6f71d JM |
5419 | /* Add the string if not present. */ |
5420 | if ((*addr_string)[i] == NULL) | |
5421 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
5422 | } |
5423 | } | |
c3f6f71d | 5424 | } |
c906108c | 5425 | |
c906108c | 5426 | |
c3f6f71d JM |
5427 | /* Convert each SAL into a real PC. Verify that the PC can be |
5428 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 5429 | |
b9362cc7 | 5430 | static void |
c3f6f71d JM |
5431 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, |
5432 | char *address) | |
5433 | { | |
5434 | int i; | |
5435 | for (i = 0; i < sals->nelts; i++) | |
ee53e872 | 5436 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
5437 | } |
5438 | ||
05ff989b | 5439 | static void |
0101ce28 JJ |
5440 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) |
5441 | { | |
5442 | struct captured_parse_breakpoint_args *args = data; | |
5443 | ||
5444 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p, | |
5445 | args->not_found_ptr); | |
0101ce28 JJ |
5446 | } |
5447 | ||
018d34a4 VP |
5448 | /* Given TOK, a string specification of condition and thread, as |
5449 | accepted by the 'break' command, extract the condition | |
5450 | string and thread number and set *COND_STRING and *THREAD. | |
5451 | PC identifies the context at which the condition should be parsed. | |
5452 | If no condition is found, *COND_STRING is set to NULL. | |
5453 | If no thread is found, *THREAD is set to -1. */ | |
5454 | static void | |
5455 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
5456 | char **cond_string, int *thread) | |
5457 | { | |
5458 | *cond_string = NULL; | |
5459 | *thread = -1; | |
5460 | while (tok && *tok) | |
5461 | { | |
5462 | char *end_tok; | |
5463 | int toklen; | |
5464 | char *cond_start = NULL; | |
5465 | char *cond_end = NULL; | |
5466 | while (*tok == ' ' || *tok == '\t') | |
5467 | tok++; | |
5468 | ||
5469 | end_tok = tok; | |
5470 | ||
5471 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5472 | end_tok++; | |
5473 | ||
5474 | toklen = end_tok - tok; | |
5475 | ||
5476 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5477 | { | |
f7545552 TT |
5478 | struct expression *expr; |
5479 | ||
018d34a4 | 5480 | tok = cond_start = end_tok + 1; |
f7545552 TT |
5481 | expr = parse_exp_1 (&tok, block_for_pc (pc), 0); |
5482 | xfree (expr); | |
018d34a4 VP |
5483 | cond_end = tok; |
5484 | *cond_string = savestring (cond_start, | |
5485 | cond_end - cond_start); | |
5486 | } | |
5487 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5488 | { | |
5489 | char *tmptok; | |
5490 | ||
5491 | tok = end_tok + 1; | |
5492 | tmptok = tok; | |
5493 | *thread = strtol (tok, &tok, 0); | |
5494 | if (tok == tmptok) | |
5495 | error (_("Junk after thread keyword.")); | |
5496 | if (!valid_thread_id (*thread)) | |
5497 | error (_("Unknown thread %d."), *thread); | |
5498 | } | |
5499 | else | |
5500 | error (_("Junk at end of arguments.")); | |
5501 | } | |
5502 | } | |
5503 | ||
72b2ff0e VP |
5504 | /* Set a breakpoint. This function is shared between |
5505 | CLI and MI functions for setting a breakpoint. | |
5506 | This function has two major modes of operations, | |
5507 | selected by the PARSE_CONDITION_AND_THREAD parameter. | |
5508 | If non-zero, the function will parse arg, extracting | |
5509 | breakpoint location, address and thread. Otherwise, | |
5510 | ARG is just the location of breakpoint, with condition | |
5511 | and thread specified by the COND_STRING and THREAD | |
5512 | parameters. */ | |
0101ce28 | 5513 | |
98deb0da | 5514 | static void |
72b2ff0e | 5515 | break_command_really (char *arg, char *cond_string, int thread, |
60c46647 VP |
5516 | int parse_condition_and_thread, |
5517 | int tempflag, int hardwareflag, | |
5518 | int ignore_count, | |
5519 | enum auto_boolean pending_break_support, | |
604133b5 | 5520 | struct breakpoint_ops *ops, |
41447f92 VP |
5521 | int from_tty, |
5522 | int enabled) | |
c3f6f71d | 5523 | { |
71fff37b | 5524 | struct gdb_exception e; |
c3f6f71d | 5525 | struct symtabs_and_lines sals; |
0101ce28 | 5526 | struct symtab_and_line pending_sal; |
0101ce28 JJ |
5527 | char *copy_arg; |
5528 | char *err_msg; | |
c3f6f71d JM |
5529 | char *addr_start = arg; |
5530 | char **addr_string; | |
5531 | struct cleanup *old_chain; | |
5532 | struct cleanup *breakpoint_chain = NULL; | |
0101ce28 | 5533 | struct captured_parse_breakpoint_args parse_args; |
05ff989b | 5534 | int i; |
0101ce28 | 5535 | int pending = 0; |
0101ce28 | 5536 | int not_found = 0; |
c3f6f71d | 5537 | |
c3f6f71d JM |
5538 | sals.sals = NULL; |
5539 | sals.nelts = 0; | |
5540 | addr_string = NULL; | |
c3f6f71d | 5541 | |
0101ce28 JJ |
5542 | parse_args.arg_p = &arg; |
5543 | parse_args.sals_p = &sals; | |
5544 | parse_args.addr_string_p = &addr_string; | |
5545 | parse_args.not_found_ptr = ¬_found; | |
5546 | ||
05ff989b AC |
5547 | e = catch_exception (uiout, do_captured_parse_breakpoint, |
5548 | &parse_args, RETURN_MASK_ALL); | |
0101ce28 JJ |
5549 | |
5550 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 5551 | switch (e.reason) |
0101ce28 | 5552 | { |
05ff989b | 5553 | case RETURN_QUIT: |
98deb0da | 5554 | throw_exception (e); |
05ff989b AC |
5555 | case RETURN_ERROR: |
5556 | switch (e.error) | |
0101ce28 | 5557 | { |
05ff989b | 5558 | case NOT_FOUND_ERROR: |
0101ce28 | 5559 | |
05ff989b AC |
5560 | /* If pending breakpoint support is turned off, throw |
5561 | error. */ | |
fa8d40ab JJ |
5562 | |
5563 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
5564 | throw_exception (e); |
5565 | ||
5566 | exception_print (gdb_stderr, e); | |
fa8d40ab | 5567 | |
05ff989b AC |
5568 | /* If pending breakpoint support is auto query and the user |
5569 | selects no, then simply return the error code. */ | |
fa8d40ab JJ |
5570 | if (pending_break_support == AUTO_BOOLEAN_AUTO && |
5571 | !nquery ("Make breakpoint pending on future shared library load? ")) | |
98deb0da | 5572 | return; |
fa8d40ab | 5573 | |
05ff989b AC |
5574 | /* At this point, either the user was queried about setting |
5575 | a pending breakpoint and selected yes, or pending | |
5576 | breakpoint behavior is on and thus a pending breakpoint | |
5577 | is defaulted on behalf of the user. */ | |
0101ce28 JJ |
5578 | copy_arg = xstrdup (addr_start); |
5579 | addr_string = ©_arg; | |
5580 | sals.nelts = 1; | |
5581 | sals.sals = &pending_sal; | |
5582 | pending_sal.pc = 0; | |
5583 | pending = 1; | |
05ff989b AC |
5584 | break; |
5585 | default: | |
98deb0da | 5586 | throw_exception (e); |
0101ce28 | 5587 | } |
05ff989b AC |
5588 | default: |
5589 | if (!sals.nelts) | |
98deb0da | 5590 | return; |
0101ce28 | 5591 | } |
c3f6f71d JM |
5592 | |
5593 | /* Create a chain of things that always need to be cleaned up. */ | |
5594 | old_chain = make_cleanup (null_cleanup, 0); | |
5595 | ||
0101ce28 JJ |
5596 | if (!pending) |
5597 | { | |
5598 | /* Make sure that all storage allocated to SALS gets freed. */ | |
5599 | make_cleanup (xfree, sals.sals); | |
5600 | ||
5601 | /* Cleanup the addr_string array but not its contents. */ | |
5602 | make_cleanup (xfree, addr_string); | |
5603 | } | |
c3f6f71d | 5604 | |
c3f6f71d JM |
5605 | /* ----------------------------- SNIP ----------------------------- |
5606 | Anything added to the cleanup chain beyond this point is assumed | |
5607 | to be part of a breakpoint. If the breakpoint create succeeds | |
5608 | then the memory is not reclaimed. */ | |
5609 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
5610 | ||
5611 | /* Mark the contents of the addr_string for cleanup. These go on | |
5612 | the breakpoint_chain and only occure if the breakpoint create | |
5613 | fails. */ | |
5614 | for (i = 0; i < sals.nelts; i++) | |
5615 | { | |
5616 | if (addr_string[i] != NULL) | |
b8c9b27d | 5617 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
5618 | } |
5619 | ||
5620 | /* Resolve all line numbers to PC's and verify that the addresses | |
5621 | are ok for the target. */ | |
0101ce28 JJ |
5622 | if (!pending) |
5623 | breakpoint_sals_to_pc (&sals, addr_start); | |
c3f6f71d JM |
5624 | |
5625 | /* Verify that condition can be parsed, before setting any | |
5626 | breakpoints. Allocate a separate condition expression for each | |
5627 | breakpoint. */ | |
0101ce28 | 5628 | if (!pending) |
c3f6f71d | 5629 | { |
2f069f6f | 5630 | if (parse_condition_and_thread) |
72b2ff0e VP |
5631 | { |
5632 | /* Here we only parse 'arg' to separate condition | |
5633 | from thread number, so parsing in context of first | |
5634 | sal is OK. When setting the breakpoint we'll | |
5635 | re-parse it in context of each sal. */ | |
5636 | cond_string = NULL; | |
5637 | thread = -1; | |
5638 | find_condition_and_thread (arg, sals.sals[0].pc, &cond_string, &thread); | |
5639 | if (cond_string) | |
5640 | make_cleanup (xfree, cond_string); | |
5641 | } | |
2f069f6f | 5642 | else |
72b2ff0e VP |
5643 | { |
5644 | /* Create a private copy of condition string. */ | |
5645 | if (cond_string) | |
5646 | { | |
5647 | cond_string = xstrdup (cond_string); | |
5648 | make_cleanup (xfree, cond_string); | |
5649 | } | |
5650 | } | |
018d34a4 | 5651 | create_breakpoints (sals, addr_string, cond_string, |
0101ce28 JJ |
5652 | hardwareflag ? bp_hardware_breakpoint |
5653 | : bp_breakpoint, | |
5654 | tempflag ? disp_del : disp_donttouch, | |
41447f92 | 5655 | thread, ignore_count, ops, from_tty, enabled); |
c906108c | 5656 | } |
0101ce28 JJ |
5657 | else |
5658 | { | |
fe3f5fa8 | 5659 | struct symtab_and_line sal = {0}; |
0101ce28 JJ |
5660 | struct breakpoint *b; |
5661 | ||
0101ce28 JJ |
5662 | make_cleanup (xfree, copy_arg); |
5663 | ||
0d381245 VP |
5664 | b = set_raw_breakpoint_without_location (hardwareflag |
5665 | ? bp_hardware_breakpoint | |
5666 | : bp_breakpoint); | |
0101ce28 JJ |
5667 | set_breakpoint_count (breakpoint_count + 1); |
5668 | b->number = breakpoint_count; | |
72b2ff0e | 5669 | b->thread = -1; |
018d34a4 | 5670 | b->addr_string = addr_string[0]; |
72b2ff0e | 5671 | b->cond_string = NULL; |
0101ce28 | 5672 | b->ignore_count = ignore_count; |
0101ce28 | 5673 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 5674 | b->condition_not_parsed = 1; |
604133b5 | 5675 | b->ops = ops; |
41447f92 | 5676 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
74960c60 | 5677 | |
b60e7edf | 5678 | update_global_location_list (1); |
0101ce28 JJ |
5679 | mention (b); |
5680 | } | |
5681 | ||
c3f6f71d | 5682 | if (sals.nelts > 1) |
8a3fe4f8 AC |
5683 | warning (_("Multiple breakpoints were set.\n" |
5684 | "Use the \"delete\" command to delete unwanted breakpoints.")); | |
c3f6f71d JM |
5685 | /* That's it. Discard the cleanups for data inserted into the |
5686 | breakpoint. */ | |
5687 | discard_cleanups (breakpoint_chain); | |
5688 | /* But cleanup everything else. */ | |
5689 | do_cleanups (old_chain); | |
5690 | } | |
c906108c | 5691 | |
72b2ff0e VP |
5692 | /* Set a breakpoint. |
5693 | ARG is a string describing breakpoint address, | |
5694 | condition, and thread. | |
5695 | FLAG specifies if a breakpoint is hardware on, | |
5696 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
5697 | and BP_TEMPFLAG. */ | |
5698 | ||
98deb0da | 5699 | static void |
72b2ff0e | 5700 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 5701 | { |
72b2ff0e VP |
5702 | int hardwareflag = flag & BP_HARDWAREFLAG; |
5703 | int tempflag = flag & BP_TEMPFLAG; | |
c3f6f71d | 5704 | |
98deb0da VP |
5705 | break_command_really (arg, |
5706 | NULL, 0, 1 /* parse arg */, | |
5707 | tempflag, hardwareflag, | |
5708 | 0 /* Ignore count */, | |
604133b5 AR |
5709 | pending_break_support, |
5710 | NULL /* breakpoint_ops */, | |
41447f92 VP |
5711 | from_tty, |
5712 | 1 /* enabled */); | |
c906108c SS |
5713 | } |
5714 | ||
72b2ff0e | 5715 | |
98deb0da VP |
5716 | void |
5717 | set_breakpoint (char *address, char *condition, | |
c3f6f71d | 5718 | int hardwareflag, int tempflag, |
ce43223b | 5719 | int thread, int ignore_count, |
41447f92 | 5720 | int pending, int enabled) |
c3f6f71d | 5721 | { |
98deb0da VP |
5722 | break_command_really (address, condition, thread, |
5723 | 0 /* condition and thread are valid. */, | |
5724 | tempflag, hardwareflag, | |
5725 | ignore_count, | |
5726 | pending | |
5727 | ? AUTO_BOOLEAN_TRUE : AUTO_BOOLEAN_FALSE, | |
41447f92 | 5728 | NULL, 0, enabled); |
c3f6f71d JM |
5729 | } |
5730 | ||
6a048695 JB |
5731 | /* Adjust SAL to the first instruction past the function prologue. |
5732 | The end of the prologue is determined using the line table from | |
5733 | the debugging information. | |
5734 | ||
5735 | If SAL is already past the prologue, then do nothing. */ | |
5736 | ||
5737 | static void | |
5738 | skip_prologue_sal (struct symtab_and_line *sal) | |
5739 | { | |
5740 | struct symbol *sym = find_pc_function (sal->pc); | |
5741 | struct symtab_and_line start_sal; | |
5742 | ||
5743 | if (sym == NULL) | |
5744 | return; | |
5745 | ||
5746 | start_sal = find_function_start_sal (sym, 1); | |
5747 | if (sal->pc < start_sal.pc) | |
5748 | *sal = start_sal; | |
5749 | } | |
c3f6f71d | 5750 | |
c906108c SS |
5751 | /* Helper function for break_command_1 and disassemble_command. */ |
5752 | ||
5753 | void | |
fba45db2 | 5754 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
5755 | { |
5756 | CORE_ADDR pc; | |
5757 | ||
5758 | if (sal->pc == 0 && sal->symtab != NULL) | |
5759 | { | |
5760 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 5761 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
5762 | sal->line, sal->symtab->filename); |
5763 | sal->pc = pc; | |
6a048695 JB |
5764 | |
5765 | /* If this SAL corresponds to a breakpoint inserted using | |
5766 | a line number, then skip the function prologue if necessary. */ | |
5767 | if (sal->explicit_line) | |
5768 | skip_prologue_sal (sal); | |
c906108c SS |
5769 | } |
5770 | ||
5771 | if (sal->section == 0 && sal->symtab != NULL) | |
5772 | { | |
5773 | struct blockvector *bv; | |
c5aa993b JM |
5774 | struct block *b; |
5775 | struct symbol *sym; | |
c906108c | 5776 | |
801e3a5b | 5777 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
5778 | if (bv != NULL) |
5779 | { | |
7f0df278 | 5780 | sym = block_linkage_function (b); |
c906108c SS |
5781 | if (sym != NULL) |
5782 | { | |
5783 | fixup_symbol_section (sym, sal->symtab->objfile); | |
714835d5 | 5784 | sal->section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
5785 | } |
5786 | else | |
5787 | { | |
5788 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
5789 | have to look harder. This case can be executed if we have |
5790 | line numbers but no functions (as can happen in assembly | |
5791 | source). */ | |
c906108c | 5792 | |
c5aa993b | 5793 | struct minimal_symbol *msym; |
c906108c SS |
5794 | |
5795 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
5796 | if (msym) | |
714835d5 | 5797 | sal->section = SYMBOL_OBJ_SECTION (msym); |
c906108c SS |
5798 | } |
5799 | } | |
5800 | } | |
5801 | } | |
5802 | ||
5803 | void | |
fba45db2 | 5804 | break_command (char *arg, int from_tty) |
c906108c | 5805 | { |
db107f19 | 5806 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
5807 | } |
5808 | ||
c906108c | 5809 | void |
fba45db2 | 5810 | tbreak_command (char *arg, int from_tty) |
c906108c | 5811 | { |
db107f19 | 5812 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
5813 | } |
5814 | ||
c906108c | 5815 | static void |
fba45db2 | 5816 | hbreak_command (char *arg, int from_tty) |
c906108c | 5817 | { |
db107f19 | 5818 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
5819 | } |
5820 | ||
5821 | static void | |
fba45db2 | 5822 | thbreak_command (char *arg, int from_tty) |
c906108c | 5823 | { |
db107f19 | 5824 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
5825 | } |
5826 | ||
5827 | static void | |
fba45db2 | 5828 | stop_command (char *arg, int from_tty) |
c906108c | 5829 | { |
a3f17187 | 5830 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 5831 | Usage: stop in <function | address>\n\ |
a3f17187 | 5832 | stop at <line>\n")); |
c906108c SS |
5833 | } |
5834 | ||
5835 | static void | |
fba45db2 | 5836 | stopin_command (char *arg, int from_tty) |
c906108c SS |
5837 | { |
5838 | int badInput = 0; | |
5839 | ||
c5aa993b | 5840 | if (arg == (char *) NULL) |
c906108c SS |
5841 | badInput = 1; |
5842 | else if (*arg != '*') | |
5843 | { | |
5844 | char *argptr = arg; | |
5845 | int hasColon = 0; | |
5846 | ||
53a5351d JM |
5847 | /* look for a ':'. If this is a line number specification, then |
5848 | say it is bad, otherwise, it should be an address or | |
5849 | function/method name */ | |
c906108c | 5850 | while (*argptr && !hasColon) |
c5aa993b JM |
5851 | { |
5852 | hasColon = (*argptr == ':'); | |
5853 | argptr++; | |
5854 | } | |
c906108c SS |
5855 | |
5856 | if (hasColon) | |
c5aa993b | 5857 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 5858 | else |
c5aa993b | 5859 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
5860 | } |
5861 | ||
5862 | if (badInput) | |
a3f17187 | 5863 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 5864 | else |
db107f19 | 5865 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
5866 | } |
5867 | ||
5868 | static void | |
fba45db2 | 5869 | stopat_command (char *arg, int from_tty) |
c906108c SS |
5870 | { |
5871 | int badInput = 0; | |
5872 | ||
c5aa993b | 5873 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
5874 | badInput = 1; |
5875 | else | |
5876 | { | |
5877 | char *argptr = arg; | |
5878 | int hasColon = 0; | |
5879 | ||
5880 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 5881 | it is probably a line number. */ |
c906108c | 5882 | while (*argptr && !hasColon) |
c5aa993b JM |
5883 | { |
5884 | hasColon = (*argptr == ':'); | |
5885 | argptr++; | |
5886 | } | |
c906108c SS |
5887 | |
5888 | if (hasColon) | |
c5aa993b | 5889 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 5890 | else |
c5aa993b | 5891 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
5892 | } |
5893 | ||
5894 | if (badInput) | |
a3f17187 | 5895 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 5896 | else |
db107f19 | 5897 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
5898 | } |
5899 | ||
53a5351d JM |
5900 | /* accessflag: hw_write: watch write, |
5901 | hw_read: watch read, | |
5902 | hw_access: watch access (read or write) */ | |
c906108c | 5903 | static void |
fba45db2 | 5904 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c | 5905 | { |
d983da9c | 5906 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c SS |
5907 | struct symtab_and_line sal; |
5908 | struct expression *exp; | |
5909 | struct block *exp_valid_block; | |
5910 | struct value *val, *mark; | |
5911 | struct frame_info *frame; | |
5912 | struct frame_info *prev_frame = NULL; | |
5913 | char *exp_start = NULL; | |
5914 | char *exp_end = NULL; | |
37e4754d | 5915 | char *tok, *id_tok_start, *end_tok; |
c906108c SS |
5916 | int toklen; |
5917 | char *cond_start = NULL; | |
5918 | char *cond_end = NULL; | |
5919 | struct expression *cond = NULL; | |
5920 | int i, other_type_used, target_resources_ok = 0; | |
5921 | enum bptype bp_type; | |
5922 | int mem_cnt = 0; | |
37e4754d | 5923 | int thread = -1; |
c906108c | 5924 | |
fe39c653 | 5925 | init_sal (&sal); /* initialize to zeroes */ |
c5aa993b | 5926 | |
37e4754d LM |
5927 | /* Make sure that we actually have parameters to parse. */ |
5928 | if (arg != NULL && arg[0] != '\0') | |
5929 | { | |
5930 | toklen = strlen (arg); /* Size of argument list. */ | |
5931 | ||
5932 | /* Points tok to the end of the argument list. */ | |
5933 | tok = arg + toklen - 1; | |
5934 | ||
5935 | /* Go backwards in the parameters list. Skip the last parameter. | |
5936 | If we're expecting a 'thread <thread_num>' parameter, this should | |
5937 | be the thread identifier. */ | |
5938 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
5939 | tok--; | |
5940 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
5941 | tok--; | |
5942 | ||
5943 | /* Points end_tok to the beginning of the last token. */ | |
5944 | id_tok_start = tok + 1; | |
5945 | ||
5946 | /* Go backwards in the parameters list. Skip one more parameter. | |
5947 | If we're expecting a 'thread <thread_num>' parameter, we should | |
5948 | reach a "thread" token. */ | |
5949 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
5950 | tok--; | |
5951 | ||
5952 | end_tok = tok; | |
5953 | ||
5954 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
5955 | tok--; | |
5956 | ||
5957 | /* Move the pointer forward to skip the whitespace and | |
5958 | calculate the length of the token. */ | |
5959 | tok++; | |
5960 | toklen = end_tok - tok; | |
5961 | ||
5962 | if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5963 | { | |
5964 | /* At this point we've found a "thread" token, which means | |
5965 | the user is trying to set a watchpoint that triggers | |
5966 | only in a specific thread. */ | |
5967 | char *endp; | |
5968 | ||
5969 | /* Extract the thread ID from the next token. */ | |
5970 | thread = strtol (id_tok_start, &endp, 0); | |
5971 | ||
5972 | /* Check if the user provided a valid numeric value for the | |
5973 | thread ID. */ | |
5974 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
5975 | error (_("Invalid thread ID specification %s."), id_tok_start); | |
5976 | ||
5977 | /* Check if the thread actually exists. */ | |
5978 | if (!valid_thread_id (thread)) | |
5979 | error (_("Unknown thread %d."), thread); | |
5980 | ||
5981 | /* Truncate the string and get rid of the thread <thread_num> | |
5982 | parameter before the parameter list is parsed by the | |
5983 | evaluate_expression() function. */ | |
5984 | *tok = '\0'; | |
5985 | } | |
5986 | } | |
5987 | ||
5988 | /* Parse the rest of the arguments. */ | |
c906108c SS |
5989 | innermost_block = NULL; |
5990 | exp_start = arg; | |
5991 | exp = parse_exp_1 (&arg, 0, 0); | |
5992 | exp_end = arg; | |
fa8a61dc TT |
5993 | /* Remove trailing whitespace from the expression before saving it. |
5994 | This makes the eventual display of the expression string a bit | |
5995 | prettier. */ | |
5996 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
5997 | --exp_end; | |
5998 | ||
c906108c SS |
5999 | exp_valid_block = innermost_block; |
6000 | mark = value_mark (); | |
fa4727a6 DJ |
6001 | fetch_watchpoint_value (exp, &val, NULL, NULL); |
6002 | if (val != NULL) | |
6003 | release_value (val); | |
c906108c SS |
6004 | |
6005 | tok = arg; | |
6006 | while (*tok == ' ' || *tok == '\t') | |
6007 | tok++; | |
6008 | end_tok = tok; | |
6009 | ||
6010 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
6011 | end_tok++; | |
6012 | ||
6013 | toklen = end_tok - tok; | |
6014 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
6015 | { | |
6016 | tok = cond_start = end_tok + 1; | |
6017 | cond = parse_exp_1 (&tok, 0, 0); | |
6018 | cond_end = tok; | |
6019 | } | |
6020 | if (*tok) | |
8a3fe4f8 | 6021 | error (_("Junk at end of command.")); |
c906108c | 6022 | |
53a5351d | 6023 | if (accessflag == hw_read) |
c5aa993b | 6024 | bp_type = bp_read_watchpoint; |
53a5351d | 6025 | else if (accessflag == hw_access) |
c5aa993b JM |
6026 | bp_type = bp_access_watchpoint; |
6027 | else | |
6028 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
6029 | |
6030 | mem_cnt = can_use_hardware_watchpoint (val); | |
6031 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
8a3fe4f8 | 6032 | error (_("Expression cannot be implemented with read/access watchpoint.")); |
c5aa993b JM |
6033 | if (mem_cnt != 0) |
6034 | { | |
6035 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d JM |
6036 | target_resources_ok = |
6037 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type, i + mem_cnt, | |
6038 | other_type_used); | |
c5aa993b | 6039 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 6040 | error (_("Target does not support this type of hardware watchpoint.")); |
53a5351d | 6041 | |
c5aa993b | 6042 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 6043 | error (_("Target can only support one kind of HW watchpoint at a time.")); |
c5aa993b | 6044 | } |
c906108c | 6045 | |
4d28f7a8 KB |
6046 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
6047 | watchpoint could not be set. */ | |
6048 | if (!mem_cnt || target_resources_ok <= 0) | |
6049 | bp_type = bp_watchpoint; | |
6050 | ||
d983da9c DJ |
6051 | frame = block_innermost_frame (exp_valid_block); |
6052 | if (frame) | |
6053 | prev_frame = get_prev_frame (frame); | |
6054 | else | |
6055 | prev_frame = NULL; | |
6056 | ||
6057 | /* If the expression is "local", then set up a "watchpoint scope" | |
6058 | breakpoint at the point where we've left the scope of the watchpoint | |
6059 | expression. Create the scope breakpoint before the watchpoint, so | |
6060 | that we will encounter it first in bpstat_stop_status. */ | |
6061 | if (innermost_block && prev_frame) | |
6062 | { | |
6063 | scope_breakpoint = create_internal_breakpoint (get_frame_pc (prev_frame), | |
6064 | bp_watchpoint_scope); | |
6065 | ||
6066 | scope_breakpoint->enable_state = bp_enabled; | |
6067 | ||
6068 | /* Automatically delete the breakpoint when it hits. */ | |
6069 | scope_breakpoint->disposition = disp_del; | |
6070 | ||
6071 | /* Only break in the proper frame (help with recursion). */ | |
6072 | scope_breakpoint->frame_id = get_frame_id (prev_frame); | |
6073 | ||
6074 | /* Set the address at which we will stop. */ | |
6075 | scope_breakpoint->loc->requested_address | |
6076 | = get_frame_pc (prev_frame); | |
6077 | scope_breakpoint->loc->address | |
6078 | = adjust_breakpoint_address (scope_breakpoint->loc->requested_address, | |
6079 | scope_breakpoint->type); | |
6080 | } | |
6081 | ||
c906108c | 6082 | /* Now set up the breakpoint. */ |
4d28f7a8 | 6083 | b = set_raw_breakpoint (sal, bp_type); |
c906108c SS |
6084 | set_breakpoint_count (breakpoint_count + 1); |
6085 | b->number = breakpoint_count; | |
37e4754d | 6086 | b->thread = thread; |
b5de0fa7 | 6087 | b->disposition = disp_donttouch; |
c906108c SS |
6088 | b->exp = exp; |
6089 | b->exp_valid_block = exp_valid_block; | |
6090 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
6091 | b->val = val; | |
fa4727a6 | 6092 | b->val_valid = 1; |
511a6cd4 | 6093 | b->loc->cond = cond; |
c906108c SS |
6094 | if (cond_start) |
6095 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
6096 | else | |
6097 | b->cond_string = 0; | |
c5aa993b | 6098 | |
c906108c | 6099 | if (frame) |
d983da9c | 6100 | b->watchpoint_frame = get_frame_id (frame); |
c906108c | 6101 | else |
35a487f1 | 6102 | b->watchpoint_frame = null_frame_id; |
c906108c | 6103 | |
d983da9c | 6104 | if (scope_breakpoint != NULL) |
c906108c | 6105 | { |
d983da9c DJ |
6106 | /* The scope breakpoint is related to the watchpoint. We will |
6107 | need to act on them together. */ | |
6108 | b->related_breakpoint = scope_breakpoint; | |
6109 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 6110 | } |
d983da9c | 6111 | |
c906108c SS |
6112 | value_free_to_mark (mark); |
6113 | mention (b); | |
b60e7edf | 6114 | update_global_location_list (1); |
c906108c SS |
6115 | } |
6116 | ||
6117 | /* Return count of locations need to be watched and can be handled | |
6118 | in hardware. If the watchpoint can not be handled | |
6119 | in hardware return zero. */ | |
6120 | ||
c906108c | 6121 | static int |
fba45db2 | 6122 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
6123 | { |
6124 | int found_memory_cnt = 0; | |
2e70b7b9 | 6125 | struct value *head = v; |
c906108c SS |
6126 | |
6127 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 6128 | if (!can_use_hw_watchpoints) |
c906108c | 6129 | return 0; |
c5aa993b | 6130 | |
5c44784c JM |
6131 | /* Make sure that the value of the expression depends only upon |
6132 | memory contents, and values computed from them within GDB. If we | |
6133 | find any register references or function calls, we can't use a | |
6134 | hardware watchpoint. | |
6135 | ||
6136 | The idea here is that evaluating an expression generates a series | |
6137 | of values, one holding the value of every subexpression. (The | |
6138 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
6139 | a*b+c.) GDB's values hold almost enough information to establish | |
6140 | the criteria given above --- they identify memory lvalues, | |
6141 | register lvalues, computed values, etcetera. So we can evaluate | |
6142 | the expression, and then scan the chain of values that leaves | |
6143 | behind to decide whether we can detect any possible change to the | |
6144 | expression's final value using only hardware watchpoints. | |
6145 | ||
6146 | However, I don't think that the values returned by inferior | |
6147 | function calls are special in any way. So this function may not | |
6148 | notice that an expression involving an inferior function call | |
6149 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 6150 | for (; v; v = value_next (v)) |
c906108c | 6151 | { |
5c44784c | 6152 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 6153 | { |
d69fe07e | 6154 | if (value_lazy (v)) |
5c44784c JM |
6155 | /* A lazy memory lvalue is one that GDB never needed to fetch; |
6156 | we either just used its address (e.g., `a' in `a.b') or | |
6157 | we never needed it at all (e.g., `a' in `a,b'). */ | |
6158 | ; | |
53a5351d | 6159 | else |
5c44784c JM |
6160 | { |
6161 | /* Ahh, memory we actually used! Check if we can cover | |
6162 | it with hardware watchpoints. */ | |
df407dfe | 6163 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
6164 | |
6165 | /* We only watch structs and arrays if user asked for it | |
6166 | explicitly, never if they just happen to appear in a | |
6167 | middle of some value chain. */ | |
6168 | if (v == head | |
6169 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
6170 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
6171 | { | |
df407dfe AC |
6172 | CORE_ADDR vaddr = VALUE_ADDRESS (v) + value_offset (v); |
6173 | int len = TYPE_LENGTH (value_type (v)); | |
2e70b7b9 MS |
6174 | |
6175 | if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len)) | |
6176 | return 0; | |
6177 | else | |
6178 | found_memory_cnt++; | |
6179 | } | |
5c44784c | 6180 | } |
c5aa993b | 6181 | } |
5086187c AC |
6182 | else if (VALUE_LVAL (v) != not_lval |
6183 | && deprecated_value_modifiable (v) == 0) | |
53a5351d | 6184 | return 0; /* ??? What does this represent? */ |
5086187c | 6185 | else if (VALUE_LVAL (v) == lval_register) |
53a5351d | 6186 | return 0; /* cannot watch a register with a HW watchpoint */ |
c906108c SS |
6187 | } |
6188 | ||
6189 | /* The expression itself looks suitable for using a hardware | |
6190 | watchpoint, but give the target machine a chance to reject it. */ | |
6191 | return found_memory_cnt; | |
6192 | } | |
6193 | ||
8b93c638 | 6194 | void |
fba45db2 | 6195 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6196 | { |
6197 | watch_command (arg, from_tty); | |
6198 | } | |
8926118c | 6199 | |
c5aa993b | 6200 | static void |
fba45db2 | 6201 | watch_command (char *arg, int from_tty) |
c906108c | 6202 | { |
53a5351d | 6203 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
6204 | } |
6205 | ||
8b93c638 | 6206 | void |
fba45db2 | 6207 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6208 | { |
6209 | rwatch_command (arg, from_tty); | |
6210 | } | |
8926118c | 6211 | |
c5aa993b | 6212 | static void |
fba45db2 | 6213 | rwatch_command (char *arg, int from_tty) |
c906108c | 6214 | { |
53a5351d | 6215 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
6216 | } |
6217 | ||
8b93c638 | 6218 | void |
fba45db2 | 6219 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6220 | { |
6221 | awatch_command (arg, from_tty); | |
6222 | } | |
8926118c | 6223 | |
c5aa993b | 6224 | static void |
fba45db2 | 6225 | awatch_command (char *arg, int from_tty) |
c906108c | 6226 | { |
53a5351d | 6227 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 6228 | } |
c906108c | 6229 | \f |
c5aa993b | 6230 | |
43ff13b4 | 6231 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
6232 | because it uses the mechanisms of breakpoints. */ |
6233 | ||
bfec99b2 PA |
6234 | struct until_break_command_continuation_args |
6235 | { | |
6236 | struct breakpoint *breakpoint; | |
6237 | struct breakpoint *breakpoint2; | |
6238 | }; | |
6239 | ||
43ff13b4 JM |
6240 | /* This function is called by fetch_inferior_event via the |
6241 | cmd_continuation pointer, to complete the until command. It takes | |
6242 | care of cleaning up the temporary breakpoints set up by the until | |
6243 | command. */ | |
c2c6d25f | 6244 | static void |
604ead4a | 6245 | until_break_command_continuation (void *arg) |
43ff13b4 | 6246 | { |
bfec99b2 PA |
6247 | struct until_break_command_continuation_args *a = arg; |
6248 | ||
6249 | delete_breakpoint (a->breakpoint); | |
6250 | if (a->breakpoint2) | |
6251 | delete_breakpoint (a->breakpoint2); | |
43ff13b4 JM |
6252 | } |
6253 | ||
c906108c | 6254 | void |
ae66c1fc | 6255 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
6256 | { |
6257 | struct symtabs_and_lines sals; | |
6258 | struct symtab_and_line sal; | |
206415a3 DJ |
6259 | struct frame_info *frame = get_selected_frame (NULL); |
6260 | struct frame_info *prev_frame = get_prev_frame (frame); | |
c906108c | 6261 | struct breakpoint *breakpoint; |
f107f563 | 6262 | struct breakpoint *breakpoint2 = NULL; |
c906108c SS |
6263 | struct cleanup *old_chain; |
6264 | ||
6265 | clear_proceed_status (); | |
6266 | ||
6267 | /* Set a breakpoint where the user wants it and at return from | |
6268 | this function */ | |
c5aa993b | 6269 | |
c906108c SS |
6270 | if (default_breakpoint_valid) |
6271 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 6272 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 6273 | else |
53a5351d | 6274 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 6275 | 0, (char ***) NULL, NULL); |
c5aa993b | 6276 | |
c906108c | 6277 | if (sals.nelts != 1) |
8a3fe4f8 | 6278 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 6279 | |
c906108c | 6280 | sal = sals.sals[0]; |
b8c9b27d | 6281 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 6282 | |
c906108c | 6283 | if (*arg) |
8a3fe4f8 | 6284 | error (_("Junk at end of arguments.")); |
c5aa993b | 6285 | |
c906108c | 6286 | resolve_sal_pc (&sal); |
c5aa993b | 6287 | |
ae66c1fc EZ |
6288 | if (anywhere) |
6289 | /* If the user told us to continue until a specified location, | |
6290 | we don't specify a frame at which we need to stop. */ | |
6291 | breakpoint = set_momentary_breakpoint (sal, null_frame_id, bp_until); | |
6292 | else | |
6293 | /* Otherwise, specify the current frame, because we want to stop only | |
6294 | at the very same frame. */ | |
206415a3 | 6295 | breakpoint = set_momentary_breakpoint (sal, get_frame_id (frame), |
ae66c1fc | 6296 | bp_until); |
c5aa993b | 6297 | |
f107f563 | 6298 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
c906108c | 6299 | |
ae66c1fc EZ |
6300 | /* Keep within the current frame, or in frames called by the current |
6301 | one. */ | |
c906108c SS |
6302 | if (prev_frame) |
6303 | { | |
30f7db39 AC |
6304 | sal = find_pc_line (get_frame_pc (prev_frame), 0); |
6305 | sal.pc = get_frame_pc (prev_frame); | |
f107f563 VP |
6306 | breakpoint2 = set_momentary_breakpoint (sal, get_frame_id (prev_frame), |
6307 | bp_until); | |
6308 | make_cleanup_delete_breakpoint (breakpoint2); | |
c906108c | 6309 | } |
c5aa993b | 6310 | |
c906108c | 6311 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
f107f563 VP |
6312 | |
6313 | /* If we are running asynchronously, and proceed call above has actually | |
6314 | managed to start the target, arrange for breakpoints to be | |
6315 | deleted when the target stops. Otherwise, we're already stopped and | |
6316 | delete breakpoints via cleanup chain. */ | |
6317 | ||
8ea051c5 | 6318 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 6319 | { |
bfec99b2 PA |
6320 | struct until_break_command_continuation_args *args; |
6321 | args = xmalloc (sizeof (*args)); | |
f107f563 | 6322 | |
bfec99b2 PA |
6323 | args->breakpoint = breakpoint; |
6324 | args->breakpoint2 = breakpoint2; | |
f107f563 VP |
6325 | |
6326 | discard_cleanups (old_chain); | |
95e54da7 PA |
6327 | add_continuation (inferior_thread (), |
6328 | until_break_command_continuation, args, | |
604ead4a | 6329 | xfree); |
f107f563 VP |
6330 | } |
6331 | else | |
c5aa993b | 6332 | do_cleanups (old_chain); |
c906108c | 6333 | } |
ae66c1fc | 6334 | |
c906108c | 6335 | static void |
fba45db2 | 6336 | ep_skip_leading_whitespace (char **s) |
c906108c | 6337 | { |
c5aa993b JM |
6338 | if ((s == NULL) || (*s == NULL)) |
6339 | return; | |
6340 | while (isspace (**s)) | |
6341 | *s += 1; | |
c906108c | 6342 | } |
c5aa993b | 6343 | |
c906108c SS |
6344 | /* This function attempts to parse an optional "if <cond>" clause |
6345 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 6346 | |
c906108c SS |
6347 | Else, it returns a pointer to the condition string. (It does not |
6348 | attempt to evaluate the string against a particular block.) And, | |
6349 | it updates arg to point to the first character following the parsed | |
6350 | if clause in the arg string. */ | |
53a5351d | 6351 | |
c906108c | 6352 | static char * |
fba45db2 | 6353 | ep_parse_optional_if_clause (char **arg) |
c906108c | 6354 | { |
c5aa993b JM |
6355 | char *cond_string; |
6356 | ||
6357 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 6358 | return NULL; |
c5aa993b | 6359 | |
c906108c SS |
6360 | /* Skip the "if" keyword. */ |
6361 | (*arg) += 2; | |
c5aa993b | 6362 | |
c906108c SS |
6363 | /* Skip any extra leading whitespace, and record the start of the |
6364 | condition string. */ | |
6365 | ep_skip_leading_whitespace (arg); | |
6366 | cond_string = *arg; | |
c5aa993b | 6367 | |
c906108c SS |
6368 | /* Assume that the condition occupies the remainder of the arg string. */ |
6369 | (*arg) += strlen (cond_string); | |
c5aa993b | 6370 | |
c906108c SS |
6371 | return cond_string; |
6372 | } | |
c5aa993b | 6373 | |
c906108c SS |
6374 | /* This function attempts to parse an optional filename from the arg |
6375 | string. If one is not found, it returns NULL. | |
c5aa993b | 6376 | |
c906108c SS |
6377 | Else, it returns a pointer to the parsed filename. (This function |
6378 | makes no attempt to verify that a file of that name exists, or is | |
6379 | accessible.) And, it updates arg to point to the first character | |
6380 | following the parsed filename in the arg string. | |
c5aa993b | 6381 | |
c906108c SS |
6382 | Note that clients needing to preserve the returned filename for |
6383 | future access should copy it to their own buffers. */ | |
6384 | static char * | |
fba45db2 | 6385 | ep_parse_optional_filename (char **arg) |
c906108c | 6386 | { |
c5aa993b JM |
6387 | static char filename[1024]; |
6388 | char *arg_p = *arg; | |
6389 | int i; | |
6390 | char c; | |
6391 | ||
c906108c SS |
6392 | if ((*arg_p == '\0') || isspace (*arg_p)) |
6393 | return NULL; | |
c5aa993b JM |
6394 | |
6395 | for (i = 0;; i++) | |
c906108c SS |
6396 | { |
6397 | c = *arg_p; | |
6398 | if (isspace (c)) | |
c5aa993b | 6399 | c = '\0'; |
c906108c SS |
6400 | filename[i] = c; |
6401 | if (c == '\0') | |
c5aa993b | 6402 | break; |
c906108c SS |
6403 | arg_p++; |
6404 | } | |
6405 | *arg = arg_p; | |
c5aa993b | 6406 | |
c906108c SS |
6407 | return filename; |
6408 | } | |
c5aa993b | 6409 | |
c906108c SS |
6410 | /* Commands to deal with catching events, such as signals, exceptions, |
6411 | process start/exit, etc. */ | |
c5aa993b JM |
6412 | |
6413 | typedef enum | |
6414 | { | |
44feb3ce TT |
6415 | catch_fork_temporary, catch_vfork_temporary, |
6416 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
6417 | } |
6418 | catch_fork_kind; | |
6419 | ||
c906108c | 6420 | static void |
44feb3ce | 6421 | catch_fork_command_1 (char *arg, int from_tty, struct cmd_list_element *command) |
c906108c | 6422 | { |
c5aa993b | 6423 | char *cond_string = NULL; |
44feb3ce TT |
6424 | catch_fork_kind fork_kind; |
6425 | int tempflag; | |
6426 | ||
6427 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
6428 | tempflag = (fork_kind == catch_fork_temporary | |
6429 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 6430 | |
44feb3ce TT |
6431 | if (!arg) |
6432 | arg = ""; | |
c906108c | 6433 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6434 | |
c906108c | 6435 | /* The allowed syntax is: |
c5aa993b JM |
6436 | catch [v]fork |
6437 | catch [v]fork if <cond> | |
6438 | ||
c906108c SS |
6439 | First, check if there's an if clause. */ |
6440 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6441 | |
c906108c | 6442 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6443 | error (_("Junk at end of arguments.")); |
c5aa993b | 6444 | |
c906108c SS |
6445 | /* If this target supports it, create a fork or vfork catchpoint |
6446 | and enable reporting of such events. */ | |
c5aa993b JM |
6447 | switch (fork_kind) |
6448 | { | |
44feb3ce TT |
6449 | case catch_fork_temporary: |
6450 | case catch_fork_permanent: | |
ce78b96d JB |
6451 | create_fork_vfork_event_catchpoint (tempflag, cond_string, |
6452 | &catch_fork_breakpoint_ops); | |
c906108c | 6453 | break; |
44feb3ce TT |
6454 | case catch_vfork_temporary: |
6455 | case catch_vfork_permanent: | |
ce78b96d JB |
6456 | create_fork_vfork_event_catchpoint (tempflag, cond_string, |
6457 | &catch_vfork_breakpoint_ops); | |
c906108c | 6458 | break; |
c5aa993b | 6459 | default: |
8a3fe4f8 | 6460 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 6461 | break; |
c5aa993b | 6462 | } |
c906108c SS |
6463 | } |
6464 | ||
6465 | static void | |
44feb3ce | 6466 | catch_exec_command_1 (char *arg, int from_tty, struct cmd_list_element *command) |
c906108c | 6467 | { |
44feb3ce | 6468 | int tempflag; |
c5aa993b | 6469 | char *cond_string = NULL; |
c906108c | 6470 | |
44feb3ce TT |
6471 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
6472 | ||
6473 | if (!arg) | |
6474 | arg = ""; | |
c906108c SS |
6475 | ep_skip_leading_whitespace (&arg); |
6476 | ||
6477 | /* The allowed syntax is: | |
c5aa993b JM |
6478 | catch exec |
6479 | catch exec if <cond> | |
c906108c SS |
6480 | |
6481 | First, check if there's an if clause. */ | |
6482 | cond_string = ep_parse_optional_if_clause (&arg); | |
6483 | ||
6484 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6485 | error (_("Junk at end of arguments.")); |
c906108c SS |
6486 | |
6487 | /* If this target supports it, create an exec catchpoint | |
6488 | and enable reporting of such events. */ | |
fe798b75 | 6489 | create_catchpoint (tempflag, cond_string, &catch_exec_breakpoint_ops); |
c906108c | 6490 | } |
c5aa993b | 6491 | |
3086aeae DJ |
6492 | static enum print_stop_action |
6493 | print_exception_catchpoint (struct breakpoint *b) | |
6494 | { | |
ade92717 | 6495 | int bp_temp, bp_throw; |
3086aeae | 6496 | |
ade92717 | 6497 | annotate_catchpoint (b->number); |
3086aeae | 6498 | |
ade92717 AR |
6499 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
6500 | if (b->loc->address != b->loc->requested_address) | |
6501 | breakpoint_adjustment_warning (b->loc->requested_address, | |
6502 | b->loc->address, | |
6503 | b->number, 1); | |
6504 | bp_temp = b->loc->owner->disposition == disp_del; | |
6505 | ui_out_text (uiout, | |
6506 | bp_temp ? "Temporary catchpoint " | |
6507 | : "Catchpoint "); | |
6508 | if (!ui_out_is_mi_like_p (uiout)) | |
6509 | ui_out_field_int (uiout, "bkptno", b->number); | |
6510 | ui_out_text (uiout, | |
c0b37c48 AR |
6511 | bp_throw ? " (exception thrown), " |
6512 | : " (exception caught), "); | |
ade92717 AR |
6513 | if (ui_out_is_mi_like_p (uiout)) |
6514 | { | |
6515 | ui_out_field_string (uiout, "reason", | |
6516 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
6517 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
6518 | ui_out_field_int (uiout, "bkptno", b->number); | |
6519 | } | |
3086aeae DJ |
6520 | return PRINT_SRC_AND_LOC; |
6521 | } | |
6522 | ||
6523 | static void | |
6524 | print_one_exception_catchpoint (struct breakpoint *b, CORE_ADDR *last_addr) | |
6525 | { | |
79a45b7d TT |
6526 | struct value_print_options opts; |
6527 | get_user_print_options (&opts); | |
6528 | if (opts.addressprint) | |
3086aeae DJ |
6529 | { |
6530 | annotate_field (4); | |
604133b5 AR |
6531 | if (b->loc == NULL || b->loc->shlib_disabled) |
6532 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
6533 | else | |
6534 | ui_out_field_core_addr (uiout, "addr", b->loc->address); | |
3086aeae DJ |
6535 | } |
6536 | annotate_field (5); | |
604133b5 AR |
6537 | if (b->loc) |
6538 | *last_addr = b->loc->address; | |
3086aeae DJ |
6539 | if (strstr (b->addr_string, "throw") != NULL) |
6540 | ui_out_field_string (uiout, "what", "exception throw"); | |
6541 | else | |
6542 | ui_out_field_string (uiout, "what", "exception catch"); | |
6543 | } | |
6544 | ||
6545 | static void | |
6546 | print_mention_exception_catchpoint (struct breakpoint *b) | |
6547 | { | |
ade92717 AR |
6548 | int bp_temp; |
6549 | int bp_throw; | |
6550 | ||
6551 | bp_temp = b->loc->owner->disposition == disp_del; | |
6552 | bp_throw = strstr (b->addr_string, "throw") != NULL; | |
6553 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
6554 | : _("Catchpoint ")); | |
6555 | ui_out_field_int (uiout, "bkptno", b->number); | |
6556 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
6557 | : _(" (catch)")); | |
3086aeae DJ |
6558 | } |
6559 | ||
6560 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { | |
ce78b96d JB |
6561 | NULL, /* insert */ |
6562 | NULL, /* remove */ | |
6563 | NULL, /* breakpoint_hit */ | |
3086aeae DJ |
6564 | print_exception_catchpoint, |
6565 | print_one_exception_catchpoint, | |
6566 | print_mention_exception_catchpoint | |
6567 | }; | |
6568 | ||
6569 | static int | |
6570 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
6571 | enum exception_event_kind ex_event, int from_tty) | |
6572 | { | |
604133b5 AR |
6573 | char *trigger_func_name; |
6574 | ||
3086aeae | 6575 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 6576 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 6577 | else |
604133b5 | 6578 | trigger_func_name = "__cxa_throw"; |
3086aeae | 6579 | |
604133b5 AR |
6580 | break_command_really (trigger_func_name, cond_string, -1, |
6581 | 0 /* condition and thread are valid. */, | |
ade92717 | 6582 | tempflag, 0, |
604133b5 AR |
6583 | 0, |
6584 | AUTO_BOOLEAN_TRUE /* pending */, | |
41447f92 VP |
6585 | &gnu_v3_exception_catchpoint_ops, from_tty, |
6586 | 1 /* enabled */); | |
3086aeae | 6587 | |
3086aeae DJ |
6588 | return 1; |
6589 | } | |
6590 | ||
c5aa993b | 6591 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
6592 | |
6593 | static void | |
fba45db2 KB |
6594 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
6595 | int tempflag, int from_tty) | |
c906108c | 6596 | { |
c5aa993b JM |
6597 | char *cond_string = NULL; |
6598 | struct symtab_and_line *sal = NULL; | |
6599 | ||
44feb3ce TT |
6600 | if (!arg) |
6601 | arg = ""; | |
c906108c | 6602 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6603 | |
c906108c SS |
6604 | cond_string = ep_parse_optional_if_clause (&arg); |
6605 | ||
6606 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6607 | error (_("Junk at end of arguments.")); |
c906108c SS |
6608 | |
6609 | if ((ex_event != EX_EVENT_THROW) && | |
6610 | (ex_event != EX_EVENT_CATCH)) | |
8a3fe4f8 | 6611 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 6612 | |
3086aeae DJ |
6613 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
6614 | return; | |
6615 | ||
8a3fe4f8 | 6616 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
6617 | } |
6618 | ||
44feb3ce TT |
6619 | /* Implementation of "catch catch" command. */ |
6620 | ||
6621 | static void | |
6622 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
6623 | { | |
6624 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
6625 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); | |
6626 | } | |
6627 | ||
6628 | /* Implementation of "catch throw" command. */ | |
6629 | ||
6630 | static void | |
6631 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
6632 | { | |
6633 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
6634 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); | |
6635 | } | |
6636 | ||
f7f9143b JB |
6637 | /* Create a breakpoint struct for Ada exception catchpoints. */ |
6638 | ||
6639 | static void | |
6640 | create_ada_exception_breakpoint (struct symtab_and_line sal, | |
6641 | char *addr_string, | |
6642 | char *exp_string, | |
6643 | char *cond_string, | |
6644 | struct expression *cond, | |
6645 | struct breakpoint_ops *ops, | |
6646 | int tempflag, | |
6647 | int from_tty) | |
6648 | { | |
6649 | struct breakpoint *b; | |
6650 | ||
6651 | if (from_tty) | |
6652 | { | |
6653 | describe_other_breakpoints (sal.pc, sal.section, -1); | |
6654 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special | |
6655 | version for exception catchpoints, because two catchpoints | |
6656 | used for different exception names will use the same address. | |
6657 | In this case, a "breakpoint ... also set at..." warning is | |
6658 | unproductive. Besides. the warning phrasing is also a bit | |
6659 | inapropriate, we should use the word catchpoint, and tell | |
6660 | the user what type of catchpoint it is. The above is good | |
6661 | enough for now, though. */ | |
6662 | } | |
6663 | ||
6664 | b = set_raw_breakpoint (sal, bp_breakpoint); | |
6665 | set_breakpoint_count (breakpoint_count + 1); | |
6666 | ||
6667 | b->enable_state = bp_enabled; | |
6668 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
6669 | b->number = breakpoint_count; | |
6670 | b->ignore_count = 0; | |
511a6cd4 | 6671 | b->loc->cond = cond; |
f7f9143b JB |
6672 | b->addr_string = addr_string; |
6673 | b->language = language_ada; | |
6674 | b->cond_string = cond_string; | |
6675 | b->exp_string = exp_string; | |
6676 | b->thread = -1; | |
6677 | b->ops = ops; | |
f7f9143b JB |
6678 | |
6679 | mention (b); | |
b60e7edf | 6680 | update_global_location_list (1); |
f7f9143b JB |
6681 | } |
6682 | ||
6683 | /* Implement the "catch exception" command. */ | |
6684 | ||
6685 | static void | |
44feb3ce TT |
6686 | catch_ada_exception_command (char *arg, int from_tty, |
6687 | struct cmd_list_element *command) | |
f7f9143b | 6688 | { |
44feb3ce | 6689 | int tempflag; |
f7f9143b JB |
6690 | struct symtab_and_line sal; |
6691 | enum bptype type; | |
6692 | char *addr_string = NULL; | |
6693 | char *exp_string = NULL; | |
6694 | char *cond_string = NULL; | |
6695 | struct expression *cond = NULL; | |
6696 | struct breakpoint_ops *ops = NULL; | |
6697 | ||
44feb3ce TT |
6698 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
6699 | ||
6700 | if (!arg) | |
6701 | arg = ""; | |
f7f9143b JB |
6702 | sal = ada_decode_exception_location (arg, &addr_string, &exp_string, |
6703 | &cond_string, &cond, &ops); | |
6704 | create_ada_exception_breakpoint (sal, addr_string, exp_string, | |
6705 | cond_string, cond, ops, tempflag, | |
6706 | from_tty); | |
6707 | } | |
6708 | ||
6709 | /* Implement the "catch assert" command. */ | |
6710 | ||
6711 | static void | |
44feb3ce | 6712 | catch_assert_command (char *arg, int from_tty, struct cmd_list_element *command) |
f7f9143b | 6713 | { |
44feb3ce | 6714 | int tempflag; |
f7f9143b JB |
6715 | struct symtab_and_line sal; |
6716 | char *addr_string = NULL; | |
6717 | struct breakpoint_ops *ops = NULL; | |
6718 | ||
44feb3ce TT |
6719 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
6720 | ||
6721 | if (!arg) | |
6722 | arg = ""; | |
f7f9143b JB |
6723 | sal = ada_decode_assert_location (arg, &addr_string, &ops); |
6724 | create_ada_exception_breakpoint (sal, addr_string, NULL, NULL, NULL, ops, | |
6725 | tempflag, from_tty); | |
6726 | } | |
6727 | ||
c906108c | 6728 | static void |
fba45db2 | 6729 | catch_command (char *arg, int from_tty) |
c906108c | 6730 | { |
44feb3ce | 6731 | error (_("Catch requires an event name.")); |
c906108c SS |
6732 | } |
6733 | \f | |
6734 | ||
6735 | static void | |
fba45db2 | 6736 | tcatch_command (char *arg, int from_tty) |
c906108c | 6737 | { |
44feb3ce | 6738 | error (_("Catch requires an event name.")); |
c906108c SS |
6739 | } |
6740 | ||
80f8a6eb | 6741 | /* Delete breakpoints by address or line. */ |
c906108c SS |
6742 | |
6743 | static void | |
fba45db2 | 6744 | clear_command (char *arg, int from_tty) |
c906108c | 6745 | { |
d6e956e5 VP |
6746 | struct breakpoint *b; |
6747 | VEC(breakpoint_p) *found = 0; | |
6748 | int ix; | |
c906108c SS |
6749 | int default_match; |
6750 | struct symtabs_and_lines sals; | |
6751 | struct symtab_and_line sal; | |
c906108c SS |
6752 | int i; |
6753 | ||
6754 | if (arg) | |
6755 | { | |
6756 | sals = decode_line_spec (arg, 1); | |
6757 | default_match = 0; | |
6758 | } | |
6759 | else | |
6760 | { | |
c5aa993b | 6761 | sals.sals = (struct symtab_and_line *) |
c906108c | 6762 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 6763 | make_cleanup (xfree, sals.sals); |
fe39c653 | 6764 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
6765 | sal.line = default_breakpoint_line; |
6766 | sal.symtab = default_breakpoint_symtab; | |
6767 | sal.pc = default_breakpoint_address; | |
6768 | if (sal.symtab == 0) | |
8a3fe4f8 | 6769 | error (_("No source file specified.")); |
c906108c SS |
6770 | |
6771 | sals.sals[0] = sal; | |
6772 | sals.nelts = 1; | |
6773 | ||
6774 | default_match = 1; | |
6775 | } | |
6776 | ||
ed0616c6 VP |
6777 | /* We don't call resolve_sal_pc here. That's not |
6778 | as bad as it seems, because all existing breakpoints | |
6779 | typically have both file/line and pc set. So, if | |
6780 | clear is given file/line, we can match this to existing | |
6781 | breakpoint without obtaining pc at all. | |
6782 | ||
6783 | We only support clearing given the address explicitly | |
6784 | present in breakpoint table. Say, we've set breakpoint | |
6785 | at file:line. There were several PC values for that file:line, | |
6786 | due to optimization, all in one block. | |
6787 | We've picked one PC value. If "clear" is issued with another | |
6788 | PC corresponding to the same file:line, the breakpoint won't | |
6789 | be cleared. We probably can still clear the breakpoint, but | |
6790 | since the other PC value is never presented to user, user | |
6791 | can only find it by guessing, and it does not seem important | |
6792 | to support that. */ | |
6793 | ||
c906108c | 6794 | /* For each line spec given, delete bps which correspond |
80f8a6eb MS |
6795 | to it. Do it in two passes, solely to preserve the current |
6796 | behavior that from_tty is forced true if we delete more than | |
6797 | one breakpoint. */ | |
c906108c | 6798 | |
80f8a6eb | 6799 | found = NULL; |
c906108c SS |
6800 | for (i = 0; i < sals.nelts; i++) |
6801 | { | |
6802 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
6803 | If line given (pc == 0), clear all bpts on specified line. |
6804 | If defaulting, clear all bpts on default line | |
c906108c | 6805 | or at default pc. |
c5aa993b JM |
6806 | |
6807 | defaulting sal.pc != 0 tests to do | |
6808 | ||
6809 | 0 1 pc | |
6810 | 1 1 pc _and_ line | |
6811 | 0 0 line | |
6812 | 1 0 <can't happen> */ | |
c906108c SS |
6813 | |
6814 | sal = sals.sals[i]; | |
c906108c | 6815 | |
d6e956e5 VP |
6816 | /* Find all matching breakpoints and add them to |
6817 | 'found'. */ | |
6818 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6819 | { |
0d381245 | 6820 | int match = 0; |
80f8a6eb MS |
6821 | /* Are we going to delete b? */ |
6822 | if (b->type != bp_none | |
6823 | && b->type != bp_watchpoint | |
6824 | && b->type != bp_hardware_watchpoint | |
6825 | && b->type != bp_read_watchpoint | |
0d381245 VP |
6826 | && b->type != bp_access_watchpoint) |
6827 | { | |
6828 | struct bp_location *loc = b->loc; | |
6829 | for (; loc; loc = loc->next) | |
6830 | { | |
6831 | int pc_match = sal.pc | |
6832 | && (loc->address == sal.pc) | |
6833 | && (!section_is_overlay (loc->section) | |
6834 | || loc->section == sal.section); | |
6835 | int line_match = ((default_match || (0 == sal.pc)) | |
6836 | && b->source_file != NULL | |
6837 | && sal.symtab != NULL | |
6838 | && strcmp (b->source_file, sal.symtab->filename) == 0 | |
6839 | && b->line_number == sal.line); | |
6840 | if (pc_match || line_match) | |
6841 | { | |
6842 | match = 1; | |
6843 | break; | |
6844 | } | |
6845 | } | |
6846 | } | |
6847 | ||
6848 | if (match) | |
d6e956e5 | 6849 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 6850 | } |
80f8a6eb MS |
6851 | } |
6852 | /* Now go thru the 'found' chain and delete them. */ | |
d6e956e5 | 6853 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
6854 | { |
6855 | if (arg) | |
8a3fe4f8 | 6856 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 6857 | else |
8a3fe4f8 | 6858 | error (_("No breakpoint at this line.")); |
80f8a6eb | 6859 | } |
c906108c | 6860 | |
d6e956e5 | 6861 | if (VEC_length(breakpoint_p, found) > 1) |
80f8a6eb MS |
6862 | from_tty = 1; /* Always report if deleted more than one */ |
6863 | if (from_tty) | |
a3f17187 | 6864 | { |
d6e956e5 | 6865 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
6866 | printf_unfiltered (_("Deleted breakpoint ")); |
6867 | else | |
6868 | printf_unfiltered (_("Deleted breakpoints ")); | |
6869 | } | |
80f8a6eb | 6870 | breakpoints_changed (); |
d6e956e5 VP |
6871 | |
6872 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 6873 | { |
c5aa993b | 6874 | if (from_tty) |
d6e956e5 VP |
6875 | printf_unfiltered ("%d ", b->number); |
6876 | delete_breakpoint (b); | |
c906108c | 6877 | } |
80f8a6eb MS |
6878 | if (from_tty) |
6879 | putchar_unfiltered ('\n'); | |
c906108c SS |
6880 | } |
6881 | \f | |
6882 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
6883 | all breakpoints that are marked for deletion, whether hit or not. | |
6884 | This is called after any breakpoint is hit, or after errors. */ | |
6885 | ||
6886 | void | |
fba45db2 | 6887 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
6888 | { |
6889 | struct breakpoint *b, *temp; | |
6890 | ||
6891 | for (; bs; bs = bs->next) | |
20874c92 VP |
6892 | if (bs->breakpoint_at |
6893 | && bs->breakpoint_at->owner | |
6894 | && bs->breakpoint_at->owner->disposition == disp_del | |
c906108c | 6895 | && bs->stop) |
4f8d1dc6 | 6896 | delete_breakpoint (bs->breakpoint_at->owner); |
c906108c SS |
6897 | |
6898 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 6899 | { |
b5de0fa7 | 6900 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
6901 | delete_breakpoint (b); |
6902 | } | |
c906108c SS |
6903 | } |
6904 | ||
f7545552 TT |
6905 | /* A cleanup function which destroys a vector. */ |
6906 | ||
6907 | static void | |
6908 | do_vec_free (void *p) | |
6909 | { | |
6910 | VEC(bp_location_p) **vec = p; | |
6911 | if (*vec) | |
6912 | VEC_free (bp_location_p, *vec); | |
6913 | } | |
6914 | ||
4cd9bd08 | 6915 | /* If SHOULD_INSERT is false, do not insert any breakpoint locations |
b60e7edf PA |
6916 | into the inferior, only remove already-inserted locations that no |
6917 | longer should be inserted. Functions that delete a breakpoint or | |
6918 | breakpoints should pass false, so that deleting a breakpoint | |
6919 | doesn't have the side effect of inserting the locations of other | |
6920 | breakpoints that are marked not-inserted, but should_be_inserted | |
6921 | returns true on them. | |
6922 | ||
6923 | This behaviour is useful is situations close to tear-down -- e.g., | |
6924 | after an exec, while the target still has execution, but breakpoint | |
6925 | shadows of the previous executable image should *NOT* be restored | |
6926 | to the new image; or before detaching, where the target still has | |
6927 | execution and wants to delete breakpoints from GDB's lists, and all | |
6928 | breakpoints had already been removed from the inferior. */ | |
6929 | ||
0d381245 | 6930 | static void |
b60e7edf | 6931 | update_global_location_list (int should_insert) |
0d381245 | 6932 | { |
74960c60 VP |
6933 | struct breakpoint *b; |
6934 | struct bp_location **next = &bp_location_chain; | |
6935 | struct bp_location *loc; | |
6936 | struct bp_location *loc2; | |
74960c60 VP |
6937 | VEC(bp_location_p) *old_locations = NULL; |
6938 | int ret; | |
6939 | int ix; | |
f7545552 TT |
6940 | struct cleanup *cleanups; |
6941 | ||
6942 | cleanups = make_cleanup (do_vec_free, &old_locations); | |
74960c60 VP |
6943 | /* Store old locations for future reference. */ |
6944 | for (loc = bp_location_chain; loc; loc = loc->global_next) | |
6945 | VEC_safe_push (bp_location_p, old_locations, loc); | |
0d381245 | 6946 | |
74960c60 VP |
6947 | bp_location_chain = NULL; |
6948 | ALL_BREAKPOINTS (b) | |
0d381245 | 6949 | { |
74960c60 | 6950 | for (loc = b->loc; loc; loc = loc->next) |
0d381245 | 6951 | { |
74960c60 VP |
6952 | *next = loc; |
6953 | next = &(loc->global_next); | |
6954 | *next = NULL; | |
0d381245 | 6955 | } |
74960c60 VP |
6956 | } |
6957 | ||
6958 | /* Identify bp_location instances that are no longer present in the new | |
6959 | list, and therefore should be freed. Note that it's not necessary that | |
6960 | those locations should be removed from inferior -- if there's another | |
6961 | location at the same address (previously marked as duplicate), | |
6962 | we don't need to remove/insert the location. */ | |
6963 | for (ix = 0; VEC_iterate(bp_location_p, old_locations, ix, loc); ++ix) | |
6964 | { | |
6965 | /* Tells if 'loc' is found amoung the new locations. If not, we | |
6966 | have to free it. */ | |
6967 | int found_object = 0; | |
20874c92 VP |
6968 | /* Tells if the location should remain inserted in the target. */ |
6969 | int keep_in_target = 0; | |
6970 | int removed = 0; | |
74960c60 VP |
6971 | for (loc2 = bp_location_chain; loc2; loc2 = loc2->global_next) |
6972 | if (loc2 == loc) | |
6973 | { | |
6974 | found_object = 1; | |
6975 | break; | |
6976 | } | |
6977 | ||
6978 | /* If this location is no longer present, and inserted, look if there's | |
6979 | maybe a new location at the same address. If so, mark that one | |
6980 | inserted, and don't remove this one. This is needed so that we | |
6981 | don't have a time window where a breakpoint at certain location is not | |
6982 | inserted. */ | |
6983 | ||
6984 | if (loc->inserted) | |
0d381245 | 6985 | { |
74960c60 | 6986 | /* If the location is inserted now, we might have to remove it. */ |
74960c60 VP |
6987 | |
6988 | if (found_object && should_be_inserted (loc)) | |
6989 | { | |
6990 | /* The location is still present in the location list, and still | |
6991 | should be inserted. Don't do anything. */ | |
20874c92 | 6992 | keep_in_target = 1; |
74960c60 VP |
6993 | } |
6994 | else | |
6995 | { | |
6996 | /* The location is either no longer present, or got disabled. | |
6997 | See if there's another location at the same address, in which | |
6998 | case we don't need to remove this one from the target. */ | |
6999 | if (breakpoint_address_is_meaningful (loc->owner)) | |
7000 | for (loc2 = bp_location_chain; loc2; loc2 = loc2->global_next) | |
7001 | { | |
7002 | /* For the sake of should_insert_location. The | |
7003 | call to check_duplicates will fix up this later. */ | |
7004 | loc2->duplicate = 0; | |
7005 | if (should_be_inserted (loc2) | |
7006 | && loc2 != loc && loc2->address == loc->address) | |
7007 | { | |
7008 | loc2->inserted = 1; | |
7009 | loc2->target_info = loc->target_info; | |
20874c92 | 7010 | keep_in_target = 1; |
74960c60 VP |
7011 | break; |
7012 | } | |
7013 | } | |
7014 | } | |
7015 | ||
20874c92 VP |
7016 | if (!keep_in_target) |
7017 | { | |
7018 | if (remove_breakpoint (loc, mark_uninserted)) | |
7019 | { | |
7020 | /* This is just about all we can do. We could keep this | |
7021 | location on the global list, and try to remove it next | |
7022 | time, but there's no particular reason why we will | |
7023 | succeed next time. | |
7024 | ||
7025 | Note that at this point, loc->owner is still valid, | |
7026 | as delete_breakpoint frees the breakpoint only | |
7027 | after calling us. */ | |
7028 | printf_filtered (_("warning: Error removing breakpoint %d\n"), | |
7029 | loc->owner->number); | |
7030 | } | |
7031 | removed = 1; | |
7032 | } | |
0d381245 | 7033 | } |
74960c60 VP |
7034 | |
7035 | if (!found_object) | |
1c5cfe86 PA |
7036 | { |
7037 | if (removed && non_stop) | |
20874c92 VP |
7038 | { |
7039 | /* This location was removed from the targets. In non-stop mode, | |
7040 | a race condition is possible where we've removed a breakpoint, | |
7041 | but stop events for that breakpoint are already queued and will | |
7042 | arrive later. To suppress spurious SIGTRAPs reported to user, | |
7043 | we keep this breakpoint location for a bit, and will retire it | |
7044 | after we see 3 * thread_count events. | |
1c5cfe86 | 7045 | The theory here is that reporting of events should, |
20874c92 VP |
7046 | "on the average", be fair, so after that many event we'll see |
7047 | events from all threads that have anything of interest, and no | |
1c5cfe86 | 7048 | longer need to keep this breakpoint. This is just a |
20874c92 | 7049 | heuristic, but if it's wrong, we'll report unexpected SIGTRAP, |
1c5cfe86 | 7050 | which is usability issue, but not a correctness problem. */ |
20874c92 VP |
7051 | loc->events_till_retirement = 3 * (thread_count () + 1); |
7052 | loc->owner = NULL; | |
20874c92 | 7053 | |
1c5cfe86 PA |
7054 | VEC_safe_push (bp_location_p, moribund_locations, loc); |
7055 | } | |
7056 | else | |
7057 | free_bp_location (loc); | |
20874c92 | 7058 | } |
74960c60 | 7059 | } |
1c5cfe86 | 7060 | |
74960c60 VP |
7061 | ALL_BREAKPOINTS (b) |
7062 | { | |
7063 | check_duplicates (b); | |
0d381245 | 7064 | } |
74960c60 | 7065 | |
50c71eaf PA |
7066 | if (breakpoints_always_inserted_mode () && should_insert |
7067 | && (target_has_execution | |
7068 | || (gdbarch_has_global_solist (target_gdbarch) | |
7069 | && target_supports_multi_process ()))) | |
74960c60 | 7070 | insert_breakpoint_locations (); |
f7545552 TT |
7071 | |
7072 | do_cleanups (cleanups); | |
74960c60 VP |
7073 | } |
7074 | ||
20874c92 VP |
7075 | void |
7076 | breakpoint_retire_moribund (void) | |
7077 | { | |
7078 | struct bp_location *loc; | |
7079 | int ix; | |
7080 | ||
7081 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
7082 | if (--(loc->events_till_retirement) == 0) | |
7083 | { | |
7084 | free_bp_location (loc); | |
7085 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
7086 | --ix; | |
7087 | } | |
7088 | } | |
7089 | ||
74960c60 | 7090 | static void |
b60e7edf | 7091 | update_global_location_list_nothrow (int inserting) |
74960c60 VP |
7092 | { |
7093 | struct gdb_exception e; | |
7094 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
b60e7edf | 7095 | update_global_location_list (inserting); |
0d381245 VP |
7096 | } |
7097 | ||
a474d7c2 PA |
7098 | /* Clear BPT from a BPS. */ |
7099 | static void | |
7100 | bpstat_remove_breakpoint (bpstat bps, struct breakpoint *bpt) | |
7101 | { | |
7102 | bpstat bs; | |
7103 | for (bs = bps; bs; bs = bs->next) | |
7104 | if (bs->breakpoint_at && bs->breakpoint_at->owner == bpt) | |
7105 | { | |
7106 | bs->breakpoint_at = NULL; | |
7107 | bs->old_val = NULL; | |
7108 | /* bs->commands will be freed later. */ | |
7109 | } | |
7110 | } | |
7111 | ||
7112 | /* Callback for iterate_over_threads. */ | |
7113 | static int | |
7114 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
7115 | { | |
7116 | struct breakpoint *bpt = data; | |
7117 | bpstat_remove_breakpoint (th->stop_bpstat, bpt); | |
7118 | return 0; | |
7119 | } | |
7120 | ||
53a5351d JM |
7121 | /* Delete a breakpoint and clean up all traces of it in the data |
7122 | structures. */ | |
c906108c SS |
7123 | |
7124 | void | |
fba45db2 | 7125 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 7126 | { |
52f0bd74 | 7127 | struct breakpoint *b; |
74960c60 | 7128 | struct bp_location *loc, *next; |
c906108c | 7129 | |
8a3fe4f8 | 7130 | gdb_assert (bpt != NULL); |
c906108c SS |
7131 | |
7132 | /* Has this bp already been deleted? This can happen because multiple | |
7133 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
7134 | ||
7135 | One example of this happening is a watchpoint's scope bp. When the | |
7136 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
7137 | delete it. We also delete its scope bp. But the scope bp is marked | |
7138 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
7139 | checked for auto-deleting bp's, which are deleted. | |
7140 | ||
7141 | A real solution to this problem might involve reference counts in bp's, | |
7142 | and/or giving them pointers back to their referencing bpstat's, and | |
7143 | teaching delete_breakpoint to only free a bp's storage when no more | |
1272ad14 | 7144 | references were extent. A cheaper bandaid was chosen. */ |
c906108c SS |
7145 | if (bpt->type == bp_none) |
7146 | return; | |
7147 | ||
383f836e | 7148 | observer_notify_breakpoint_deleted (bpt->number); |
c906108c | 7149 | |
c906108c SS |
7150 | if (breakpoint_chain == bpt) |
7151 | breakpoint_chain = bpt->next; | |
7152 | ||
c906108c SS |
7153 | ALL_BREAKPOINTS (b) |
7154 | if (b->next == bpt) | |
c5aa993b JM |
7155 | { |
7156 | b->next = bpt->next; | |
7157 | break; | |
7158 | } | |
c906108c | 7159 | |
c906108c | 7160 | free_command_lines (&bpt->commands); |
c906108c | 7161 | if (bpt->cond_string != NULL) |
b8c9b27d | 7162 | xfree (bpt->cond_string); |
c906108c | 7163 | if (bpt->addr_string != NULL) |
b8c9b27d | 7164 | xfree (bpt->addr_string); |
c906108c | 7165 | if (bpt->exp != NULL) |
b8c9b27d | 7166 | xfree (bpt->exp); |
c906108c | 7167 | if (bpt->exp_string != NULL) |
b8c9b27d | 7168 | xfree (bpt->exp_string); |
c906108c SS |
7169 | if (bpt->val != NULL) |
7170 | value_free (bpt->val); | |
7171 | if (bpt->source_file != NULL) | |
b8c9b27d | 7172 | xfree (bpt->source_file); |
c906108c | 7173 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 7174 | xfree (bpt->exec_pathname); |
c906108c SS |
7175 | |
7176 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
7177 | /* FIXME, how can we find all bpstat's? | |
198757a8 VP |
7178 | We just check stop_bpstat for now. Note that we cannot just |
7179 | remove bpstats pointing at bpt from the stop_bpstat list | |
7180 | entirely, as breakpoint commands are associated with the bpstat; | |
7181 | if we remove it here, then the later call to | |
7182 | bpstat_do_actions (&stop_bpstat); | |
7183 | in event-top.c won't do anything, and temporary breakpoints | |
7184 | with commands won't work. */ | |
a474d7c2 | 7185 | |
a474d7c2 | 7186 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); |
74960c60 VP |
7187 | |
7188 | /* Now that breakpoint is removed from breakpoint | |
7189 | list, update the global location list. This | |
7190 | will remove locations that used to belong to | |
7191 | this breakpoint. Do this before freeing | |
7192 | the breakpoint itself, since remove_breakpoint | |
7193 | looks at location's owner. It might be better | |
7194 | design to have location completely self-contained, | |
7195 | but it's not the case now. */ | |
b60e7edf | 7196 | update_global_location_list (0); |
74960c60 VP |
7197 | |
7198 | ||
c906108c SS |
7199 | /* On the chance that someone will soon try again to delete this same |
7200 | bp, we mark it as deleted before freeing its storage. */ | |
7201 | bpt->type = bp_none; | |
7202 | ||
b8c9b27d | 7203 | xfree (bpt); |
c906108c SS |
7204 | } |
7205 | ||
4d6140d9 AC |
7206 | static void |
7207 | do_delete_breakpoint_cleanup (void *b) | |
7208 | { | |
7209 | delete_breakpoint (b); | |
7210 | } | |
7211 | ||
7212 | struct cleanup * | |
7213 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
7214 | { | |
7215 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
7216 | } | |
7217 | ||
c906108c | 7218 | void |
fba45db2 | 7219 | delete_command (char *arg, int from_tty) |
c906108c SS |
7220 | { |
7221 | struct breakpoint *b, *temp; | |
7222 | ||
ea9365bb TT |
7223 | dont_repeat (); |
7224 | ||
c906108c SS |
7225 | if (arg == 0) |
7226 | { | |
7227 | int breaks_to_delete = 0; | |
7228 | ||
7229 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
7230 | Do not delete internal or call-dummy breakpoints, these |
7231 | have to be deleted with an explicit breakpoint number argument. */ | |
7232 | ALL_BREAKPOINTS (b) | |
7233 | { | |
7234 | if (b->type != bp_call_dummy && | |
7235 | b->type != bp_shlib_event && | |
c4093a6a | 7236 | b->type != bp_thread_event && |
1900040c | 7237 | b->type != bp_overlay_event && |
c5aa993b | 7238 | b->number >= 0) |
973d738b DJ |
7239 | { |
7240 | breaks_to_delete = 1; | |
7241 | break; | |
7242 | } | |
c5aa993b | 7243 | } |
c906108c SS |
7244 | |
7245 | /* Ask user only if there are some breakpoints to delete. */ | |
7246 | if (!from_tty | |
e2e0b3e5 | 7247 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 7248 | { |
c5aa993b JM |
7249 | ALL_BREAKPOINTS_SAFE (b, temp) |
7250 | { | |
7251 | if (b->type != bp_call_dummy && | |
7252 | b->type != bp_shlib_event && | |
c4093a6a | 7253 | b->type != bp_thread_event && |
1900040c | 7254 | b->type != bp_overlay_event && |
c5aa993b JM |
7255 | b->number >= 0) |
7256 | delete_breakpoint (b); | |
7257 | } | |
c906108c SS |
7258 | } |
7259 | } | |
7260 | else | |
7261 | map_breakpoint_numbers (arg, delete_breakpoint); | |
7262 | } | |
7263 | ||
0d381245 VP |
7264 | static int |
7265 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 7266 | { |
0d381245 VP |
7267 | for (; loc; loc = loc->next) |
7268 | if (!loc->shlib_disabled) | |
7269 | return 0; | |
7270 | return 1; | |
fe3f5fa8 VP |
7271 | } |
7272 | ||
776592bf DE |
7273 | /* Subroutine of update_breakpoint_locations to simplify it. |
7274 | Return non-zero if multiple fns in list LOC have the same name. | |
7275 | Null names are ignored. */ | |
7276 | ||
7277 | static int | |
7278 | ambiguous_names_p (struct bp_location *loc) | |
7279 | { | |
7280 | struct bp_location *l; | |
7281 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
7282 | (int (*) (const void *, const void *)) streq, | |
7283 | NULL, xcalloc, xfree); | |
7284 | ||
7285 | for (l = loc; l != NULL; l = l->next) | |
7286 | { | |
7287 | const char **slot; | |
7288 | const char *name = l->function_name; | |
7289 | ||
7290 | /* Allow for some names to be NULL, ignore them. */ | |
7291 | if (name == NULL) | |
7292 | continue; | |
7293 | ||
7294 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
7295 | INSERT); | |
7296 | /* NOTE: We can assume slot != NULL here because xcalloc never returns | |
7297 | NULL. */ | |
7298 | if (*slot != NULL) | |
7299 | { | |
7300 | htab_delete (htab); | |
7301 | return 1; | |
7302 | } | |
7303 | *slot = name; | |
7304 | } | |
7305 | ||
7306 | htab_delete (htab); | |
7307 | return 0; | |
7308 | } | |
7309 | ||
fe3f5fa8 | 7310 | static void |
0d381245 VP |
7311 | update_breakpoint_locations (struct breakpoint *b, |
7312 | struct symtabs_and_lines sals) | |
fe3f5fa8 VP |
7313 | { |
7314 | int i; | |
7315 | char *s; | |
0d381245 VP |
7316 | struct bp_location *existing_locations = b->loc; |
7317 | ||
7318 | /* If there's no new locations, and all existing locations | |
7319 | are pending, don't do anything. This optimizes | |
7320 | the common case where all locations are in the same | |
7321 | shared library, that was unloaded. We'd like to | |
7322 | retain the location, so that when the library | |
7323 | is loaded again, we don't loose the enabled/disabled | |
7324 | status of the individual locations. */ | |
7325 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) | |
fe3f5fa8 VP |
7326 | return; |
7327 | ||
fe3f5fa8 VP |
7328 | b->loc = NULL; |
7329 | ||
0d381245 | 7330 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 7331 | { |
0d381245 | 7332 | struct bp_location *new_loc = |
39d61571 | 7333 | add_location_to_breakpoint (b, &(sals.sals[i])); |
fe3f5fa8 | 7334 | |
0d381245 VP |
7335 | /* Reparse conditions, they might contain references to the |
7336 | old symtab. */ | |
7337 | if (b->cond_string != NULL) | |
7338 | { | |
7339 | struct gdb_exception e; | |
fe3f5fa8 | 7340 | |
0d381245 VP |
7341 | s = b->cond_string; |
7342 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
7343 | { | |
7344 | new_loc->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), | |
7345 | 0); | |
7346 | } | |
7347 | if (e.reason < 0) | |
7348 | { | |
7349 | warning (_("failed to reevaluate condition for breakpoint %d: %s"), | |
7350 | b->number, e.message); | |
7351 | new_loc->enabled = 0; | |
7352 | } | |
7353 | } | |
fe3f5fa8 | 7354 | |
0d381245 VP |
7355 | if (b->source_file != NULL) |
7356 | xfree (b->source_file); | |
7357 | if (sals.sals[i].symtab == NULL) | |
7358 | b->source_file = NULL; | |
7359 | else | |
7360 | b->source_file = | |
7361 | savestring (sals.sals[i].symtab->filename, | |
7362 | strlen (sals.sals[i].symtab->filename)); | |
fe3f5fa8 | 7363 | |
0d381245 VP |
7364 | if (b->line_number == 0) |
7365 | b->line_number = sals.sals[i].line; | |
7366 | } | |
fe3f5fa8 | 7367 | |
514f746b AR |
7368 | /* Update locations of permanent breakpoints. */ |
7369 | if (b->enable_state == bp_permanent) | |
7370 | make_breakpoint_permanent (b); | |
7371 | ||
0d381245 VP |
7372 | /* If possible, carry over 'disable' status from existing breakpoints. */ |
7373 | { | |
7374 | struct bp_location *e = existing_locations; | |
776592bf DE |
7375 | /* If there are multiple breakpoints with the same function name, |
7376 | e.g. for inline functions, comparing function names won't work. | |
7377 | Instead compare pc addresses; this is just a heuristic as things | |
7378 | may have moved, but in practice it gives the correct answer | |
7379 | often enough until a better solution is found. */ | |
7380 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
7381 | ||
0d381245 VP |
7382 | for (; e; e = e->next) |
7383 | { | |
7384 | if (!e->enabled && e->function_name) | |
7385 | { | |
7386 | struct bp_location *l = b->loc; | |
776592bf DE |
7387 | if (have_ambiguous_names) |
7388 | { | |
7389 | for (; l; l = l->next) | |
7390 | if (e->address == l->address) | |
7391 | { | |
7392 | l->enabled = 0; | |
7393 | break; | |
7394 | } | |
7395 | } | |
7396 | else | |
7397 | { | |
7398 | for (; l; l = l->next) | |
7399 | if (l->function_name | |
7400 | && strcmp (e->function_name, l->function_name) == 0) | |
7401 | { | |
7402 | l->enabled = 0; | |
7403 | break; | |
7404 | } | |
7405 | } | |
0d381245 VP |
7406 | } |
7407 | } | |
7408 | } | |
fe3f5fa8 | 7409 | |
b60e7edf | 7410 | update_global_location_list (1); |
fe3f5fa8 VP |
7411 | } |
7412 | ||
7413 | ||
c906108c SS |
7414 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
7415 | The value we return ends up being the return value from catch_errors. | |
7416 | Unused in this case. */ | |
7417 | ||
7418 | static int | |
4efb68b1 | 7419 | breakpoint_re_set_one (void *bint) |
c906108c | 7420 | { |
53a5351d JM |
7421 | /* get past catch_errs */ |
7422 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
7423 | struct value *mark; |
7424 | int i; | |
fe3f5fa8 VP |
7425 | int not_found = 0; |
7426 | int *not_found_ptr = ¬_found; | |
7427 | struct symtabs_and_lines sals = {}; | |
ed0616c6 | 7428 | struct symtabs_and_lines expanded; |
c906108c | 7429 | char *s; |
b5de0fa7 | 7430 | enum enable_state save_enable; |
fe3f5fa8 | 7431 | struct gdb_exception e; |
f7545552 | 7432 | struct cleanup *cleanups; |
c906108c SS |
7433 | |
7434 | switch (b->type) | |
7435 | { | |
7436 | case bp_none: | |
8a3fe4f8 | 7437 | warning (_("attempted to reset apparently deleted breakpoint #%d?"), |
53a5351d | 7438 | b->number); |
c906108c SS |
7439 | return 0; |
7440 | case bp_breakpoint: | |
7441 | case bp_hardware_breakpoint: | |
c906108c SS |
7442 | if (b->addr_string == NULL) |
7443 | { | |
7444 | /* Anything without a string can't be re-set. */ | |
7445 | delete_breakpoint (b); | |
7446 | return 0; | |
7447 | } | |
c906108c SS |
7448 | |
7449 | set_language (b->language); | |
7450 | input_radix = b->input_radix; | |
7451 | s = b->addr_string; | |
fe3f5fa8 | 7452 | TRY_CATCH (e, RETURN_MASK_ERROR) |
c906108c | 7453 | { |
fe3f5fa8 VP |
7454 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, |
7455 | not_found_ptr); | |
7456 | } | |
7457 | if (e.reason < 0) | |
7458 | { | |
7459 | int not_found_and_ok = 0; | |
7460 | /* For pending breakpoints, it's expected that parsing | |
7461 | will fail until the right shared library is loaded. | |
7462 | User has already told to create pending breakpoints and | |
7463 | don't need extra messages. If breakpoint is in bp_shlib_disabled | |
7464 | state, then user already saw the message about that breakpoint | |
7465 | being disabled, and don't want to see more errors. */ | |
0d381245 VP |
7466 | if (not_found |
7467 | && (b->condition_not_parsed | |
7468 | || (b->loc && b->loc->shlib_disabled) | |
7469 | || b->enable_state == bp_disabled)) | |
fe3f5fa8 VP |
7470 | not_found_and_ok = 1; |
7471 | ||
7472 | if (!not_found_and_ok) | |
c906108c | 7473 | { |
fe3f5fa8 VP |
7474 | /* We surely don't want to warn about the same breakpoint |
7475 | 10 times. One solution, implemented here, is disable | |
7476 | the breakpoint on error. Another solution would be to | |
7477 | have separate 'warning emitted' flag. Since this | |
7478 | happens only when a binary has changed, I don't know | |
7479 | which approach is better. */ | |
7480 | b->enable_state = bp_disabled; | |
7481 | throw_exception (e); | |
c906108c | 7482 | } |
fe3f5fa8 | 7483 | } |
c906108c | 7484 | |
fe3f5fa8 VP |
7485 | if (not_found) |
7486 | break; | |
7487 | ||
7488 | gdb_assert (sals.nelts == 1); | |
7489 | resolve_sal_pc (&sals.sals[0]); | |
0d381245 | 7490 | if (b->condition_not_parsed && s && s[0]) |
fe3f5fa8 VP |
7491 | { |
7492 | char *cond_string = 0; | |
7493 | int thread = -1; | |
7494 | find_condition_and_thread (s, sals.sals[0].pc, | |
7495 | &cond_string, &thread); | |
7496 | if (cond_string) | |
7497 | b->cond_string = cond_string; | |
7498 | b->thread = thread; | |
0d381245 | 7499 | b->condition_not_parsed = 0; |
fe3f5fa8 | 7500 | } |
ed0616c6 | 7501 | expanded = expand_line_sal_maybe (sals.sals[0]); |
f7545552 | 7502 | cleanups = make_cleanup (xfree, sals.sals); |
ed0616c6 | 7503 | update_breakpoint_locations (b, expanded); |
f7545552 | 7504 | do_cleanups (cleanups); |
c906108c SS |
7505 | break; |
7506 | ||
7507 | case bp_watchpoint: | |
7508 | case bp_hardware_watchpoint: | |
7509 | case bp_read_watchpoint: | |
7510 | case bp_access_watchpoint: | |
0b3de036 VP |
7511 | /* Watchpoint can be either on expression using entirely global variables, |
7512 | or it can be on local variables. | |
7513 | ||
7514 | Watchpoints of the first kind are never auto-deleted, and even persist | |
7515 | across program restarts. Since they can use variables from shared | |
7516 | libraries, we need to reparse expression as libraries are loaded | |
7517 | and unloaded. | |
7518 | ||
7519 | Watchpoints on local variables can also change meaning as result | |
7520 | of solib event. For example, if a watchpoint uses both a local and | |
7521 | a global variables in expression, it's a local watchpoint, but | |
7522 | unloading of a shared library will make the expression invalid. | |
7523 | This is not a very common use case, but we still re-evaluate | |
7524 | expression, to avoid surprises to the user. | |
7525 | ||
7526 | Note that for local watchpoints, we re-evaluate it only if | |
7527 | watchpoints frame id is still valid. If it's not, it means | |
7528 | the watchpoint is out of scope and will be deleted soon. In fact, | |
7529 | I'm not sure we'll ever be called in this case. | |
7530 | ||
7531 | If a local watchpoint's frame id is still valid, then | |
7532 | b->exp_valid_block is likewise valid, and we can safely use it. | |
7533 | ||
7534 | Don't do anything about disabled watchpoints, since they will | |
7535 | be reevaluated again when enabled. */ | |
a5606eee | 7536 | update_watchpoint (b, 1 /* reparse */); |
c906108c | 7537 | break; |
c5aa993b JM |
7538 | /* We needn't really do anything to reset these, since the mask |
7539 | that requests them is unaffected by e.g., new libraries being | |
7540 | loaded. */ | |
ce78b96d | 7541 | case bp_catchpoint: |
c906108c | 7542 | break; |
c5aa993b | 7543 | |
c906108c | 7544 | default: |
a3f17187 | 7545 | printf_filtered (_("Deleting unknown breakpoint type %d\n"), b->type); |
c906108c | 7546 | /* fall through */ |
611c83ae PA |
7547 | /* Delete overlay event breakpoints; they will be reset later by |
7548 | breakpoint_re_set. */ | |
1900040c | 7549 | case bp_overlay_event: |
c906108c SS |
7550 | delete_breakpoint (b); |
7551 | break; | |
7552 | ||
c5aa993b JM |
7553 | /* This breakpoint is special, it's set up when the inferior |
7554 | starts and we really don't want to touch it. */ | |
c906108c SS |
7555 | case bp_shlib_event: |
7556 | ||
c4093a6a JM |
7557 | /* Like bp_shlib_event, this breakpoint type is special. |
7558 | Once it is set up, we do not want to touch it. */ | |
7559 | case bp_thread_event: | |
7560 | ||
c5aa993b JM |
7561 | /* Keep temporary breakpoints, which can be encountered when we step |
7562 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7563 | Otherwise these should have been blown away via the cleanup chain | |
7564 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7565 | case bp_until: |
7566 | case bp_finish: | |
7567 | case bp_watchpoint_scope: | |
7568 | case bp_call_dummy: | |
7569 | case bp_step_resume: | |
611c83ae PA |
7570 | case bp_longjmp: |
7571 | case bp_longjmp_resume: | |
c906108c SS |
7572 | break; |
7573 | } | |
7574 | ||
7575 | return 0; | |
7576 | } | |
7577 | ||
7578 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
7579 | void | |
fba45db2 | 7580 | breakpoint_re_set (void) |
c906108c SS |
7581 | { |
7582 | struct breakpoint *b, *temp; | |
7583 | enum language save_language; | |
7584 | int save_input_radix; | |
c5aa993b | 7585 | |
c906108c SS |
7586 | save_language = current_language->la_language; |
7587 | save_input_radix = input_radix; | |
7588 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7589 | { |
53a5351d | 7590 | /* Format possible error msg */ |
fe3f5fa8 | 7591 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
7592 | b->number); |
7593 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 7594 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 7595 | do_cleanups (cleanups); |
c5aa993b | 7596 | } |
c906108c SS |
7597 | set_language (save_language); |
7598 | input_radix = save_input_radix; | |
1900040c MS |
7599 | |
7600 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
7601 | } |
7602 | \f | |
c906108c SS |
7603 | /* Reset the thread number of this breakpoint: |
7604 | ||
7605 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 7606 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 7607 | void |
fba45db2 | 7608 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
7609 | { |
7610 | if (b->thread != -1) | |
7611 | { | |
39f77062 KB |
7612 | if (in_thread_list (inferior_ptid)) |
7613 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
7614 | } |
7615 | } | |
7616 | ||
03ac34d5 MS |
7617 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7618 | If from_tty is nonzero, it prints a message to that effect, | |
7619 | which ends with a period (no newline). */ | |
7620 | ||
c906108c | 7621 | void |
fba45db2 | 7622 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 7623 | { |
52f0bd74 | 7624 | struct breakpoint *b; |
c906108c SS |
7625 | |
7626 | if (count < 0) | |
7627 | count = 0; | |
7628 | ||
7629 | ALL_BREAKPOINTS (b) | |
7630 | if (b->number == bptnum) | |
c5aa993b JM |
7631 | { |
7632 | b->ignore_count = count; | |
221ea385 KS |
7633 | if (from_tty) |
7634 | { | |
7635 | if (count == 0) | |
a3f17187 | 7636 | printf_filtered (_("Will stop next time breakpoint %d is reached."), |
221ea385 KS |
7637 | bptnum); |
7638 | else if (count == 1) | |
a3f17187 | 7639 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
7640 | bptnum); |
7641 | else | |
a3f17187 | 7642 | printf_filtered (_("Will ignore next %d crossings of breakpoint %d."), |
221ea385 KS |
7643 | count, bptnum); |
7644 | } | |
c5aa993b | 7645 | breakpoints_changed (); |
383f836e | 7646 | observer_notify_breakpoint_modified (b->number); |
c5aa993b JM |
7647 | return; |
7648 | } | |
c906108c | 7649 | |
8a3fe4f8 | 7650 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
7651 | } |
7652 | ||
b2175913 MS |
7653 | void |
7654 | make_breakpoint_silent (struct breakpoint *b) | |
7655 | { | |
7656 | /* Silence the breakpoint. */ | |
7657 | b->silent = 1; | |
7658 | } | |
7659 | ||
c906108c SS |
7660 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
7661 | ||
7662 | static void | |
fba45db2 | 7663 | ignore_command (char *args, int from_tty) |
c906108c SS |
7664 | { |
7665 | char *p = args; | |
52f0bd74 | 7666 | int num; |
c906108c SS |
7667 | |
7668 | if (p == 0) | |
e2e0b3e5 | 7669 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 7670 | |
c906108c | 7671 | num = get_number (&p); |
5c44784c | 7672 | if (num == 0) |
8a3fe4f8 | 7673 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 7674 | if (*p == 0) |
8a3fe4f8 | 7675 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
7676 | |
7677 | set_ignore_count (num, | |
7678 | longest_to_int (value_as_long (parse_and_eval (p))), | |
7679 | from_tty); | |
221ea385 KS |
7680 | if (from_tty) |
7681 | printf_filtered ("\n"); | |
c906108c SS |
7682 | } |
7683 | \f | |
7684 | /* Call FUNCTION on each of the breakpoints | |
7685 | whose numbers are given in ARGS. */ | |
7686 | ||
7687 | static void | |
831662b3 | 7688 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) |
c906108c | 7689 | { |
52f0bd74 | 7690 | char *p = args; |
c906108c | 7691 | char *p1; |
52f0bd74 AC |
7692 | int num; |
7693 | struct breakpoint *b, *tmp; | |
11cf8741 | 7694 | int match; |
c906108c SS |
7695 | |
7696 | if (p == 0) | |
e2e0b3e5 | 7697 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c SS |
7698 | |
7699 | while (*p) | |
7700 | { | |
11cf8741 | 7701 | match = 0; |
c906108c | 7702 | p1 = p; |
c5aa993b | 7703 | |
5c44784c JM |
7704 | num = get_number_or_range (&p1); |
7705 | if (num == 0) | |
c5aa993b | 7706 | { |
8a3fe4f8 | 7707 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
7708 | } |
7709 | else | |
7710 | { | |
7711 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
7712 | if (b->number == num) | |
7713 | { | |
7714 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 7715 | match = 1; |
5c44784c JM |
7716 | function (b); |
7717 | if (related_breakpoint) | |
7718 | function (related_breakpoint); | |
11cf8741 | 7719 | break; |
5c44784c | 7720 | } |
11cf8741 | 7721 | if (match == 0) |
a3f17187 | 7722 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 7723 | } |
c906108c SS |
7724 | p = p1; |
7725 | } | |
7726 | } | |
7727 | ||
0d381245 VP |
7728 | static struct bp_location * |
7729 | find_location_by_number (char *number) | |
7730 | { | |
7731 | char *dot = strchr (number, '.'); | |
7732 | char *p1; | |
7733 | int bp_num; | |
7734 | int loc_num; | |
7735 | struct breakpoint *b; | |
7736 | struct bp_location *loc; | |
7737 | ||
7738 | *dot = '\0'; | |
7739 | ||
7740 | p1 = number; | |
7741 | bp_num = get_number_or_range (&p1); | |
7742 | if (bp_num == 0) | |
7743 | error (_("Bad breakpoint number '%s'"), number); | |
7744 | ||
7745 | ALL_BREAKPOINTS (b) | |
7746 | if (b->number == bp_num) | |
7747 | { | |
7748 | break; | |
7749 | } | |
7750 | ||
7751 | if (!b || b->number != bp_num) | |
7752 | error (_("Bad breakpoint number '%s'"), number); | |
7753 | ||
7754 | p1 = dot+1; | |
7755 | loc_num = get_number_or_range (&p1); | |
7756 | if (loc_num == 0) | |
7757 | error (_("Bad breakpoint location number '%s'"), number); | |
7758 | ||
7759 | --loc_num; | |
7760 | loc = b->loc; | |
7761 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
7762 | ; | |
7763 | if (!loc) | |
7764 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
7765 | ||
7766 | return loc; | |
7767 | } | |
7768 | ||
7769 | ||
1900040c MS |
7770 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7771 | If from_tty is nonzero, it prints a message to that effect, | |
7772 | which ends with a period (no newline). */ | |
7773 | ||
c906108c | 7774 | void |
fba45db2 | 7775 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7776 | { |
7777 | /* Never disable a watchpoint scope breakpoint; we want to | |
7778 | hit them when we leave scope so we can delete both the | |
7779 | watchpoint and its scope breakpoint at that time. */ | |
7780 | if (bpt->type == bp_watchpoint_scope) | |
7781 | return; | |
7782 | ||
c2c6d25f | 7783 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 7784 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
7785 | return; |
7786 | ||
b5de0fa7 | 7787 | bpt->enable_state = bp_disabled; |
c906108c | 7788 | |
b60e7edf | 7789 | update_global_location_list (0); |
c906108c | 7790 | |
383f836e | 7791 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
7792 | } |
7793 | ||
c906108c | 7794 | static void |
fba45db2 | 7795 | disable_command (char *args, int from_tty) |
c906108c | 7796 | { |
52f0bd74 | 7797 | struct breakpoint *bpt; |
c906108c SS |
7798 | if (args == 0) |
7799 | ALL_BREAKPOINTS (bpt) | |
7800 | switch (bpt->type) | |
c5aa993b JM |
7801 | { |
7802 | case bp_none: | |
8a3fe4f8 | 7803 | warning (_("attempted to disable apparently deleted breakpoint #%d?"), |
53a5351d | 7804 | bpt->number); |
c5aa993b JM |
7805 | continue; |
7806 | case bp_breakpoint: | |
ce78b96d | 7807 | case bp_catchpoint: |
c5aa993b JM |
7808 | case bp_hardware_breakpoint: |
7809 | case bp_watchpoint: | |
7810 | case bp_hardware_watchpoint: | |
7811 | case bp_read_watchpoint: | |
7812 | case bp_access_watchpoint: | |
7813 | disable_breakpoint (bpt); | |
7814 | default: | |
7815 | continue; | |
7816 | } | |
0d381245 VP |
7817 | else if (strchr (args, '.')) |
7818 | { | |
7819 | struct bp_location *loc = find_location_by_number (args); | |
7820 | if (loc) | |
7821 | loc->enabled = 0; | |
b60e7edf | 7822 | update_global_location_list (0); |
0d381245 | 7823 | } |
c906108c SS |
7824 | else |
7825 | map_breakpoint_numbers (args, disable_breakpoint); | |
7826 | } | |
7827 | ||
7828 | static void | |
fba45db2 | 7829 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 7830 | { |
c906108c SS |
7831 | int target_resources_ok, other_type_used; |
7832 | struct value *mark; | |
7833 | ||
7834 | if (bpt->type == bp_hardware_breakpoint) | |
7835 | { | |
7836 | int i; | |
c5aa993b | 7837 | i = hw_breakpoint_used_count (); |
53a5351d JM |
7838 | target_resources_ok = |
7839 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
7840 | i + 1, 0); | |
c906108c | 7841 | if (target_resources_ok == 0) |
8a3fe4f8 | 7842 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 7843 | else if (target_resources_ok < 0) |
8a3fe4f8 | 7844 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
7845 | } |
7846 | ||
fe3f5fa8 VP |
7847 | if (bpt->type == bp_watchpoint || |
7848 | bpt->type == bp_hardware_watchpoint || | |
7849 | bpt->type == bp_read_watchpoint || | |
7850 | bpt->type == bp_access_watchpoint) | |
c906108c | 7851 | { |
dde02812 ES |
7852 | struct gdb_exception e; |
7853 | ||
7854 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 7855 | { |
dde02812 | 7856 | update_watchpoint (bpt, 1 /* reparse */); |
c906108c | 7857 | } |
dde02812 | 7858 | if (e.reason < 0) |
c5aa993b | 7859 | { |
dde02812 ES |
7860 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
7861 | bpt->number); | |
7862 | return; | |
c5aa993b | 7863 | } |
c906108c | 7864 | } |
0101ce28 | 7865 | |
b4c291bb KH |
7866 | if (bpt->enable_state != bp_permanent) |
7867 | bpt->enable_state = bp_enabled; | |
7868 | bpt->disposition = disposition; | |
b60e7edf | 7869 | update_global_location_list (1); |
b4c291bb KH |
7870 | breakpoints_changed (); |
7871 | ||
383f836e | 7872 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
7873 | } |
7874 | ||
fe3f5fa8 | 7875 | |
c906108c | 7876 | void |
fba45db2 | 7877 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7878 | { |
7879 | do_enable_breakpoint (bpt, bpt->disposition); | |
7880 | } | |
7881 | ||
7882 | /* The enable command enables the specified breakpoints (or all defined | |
7883 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 7884 | in stopping the inferior. */ |
c906108c | 7885 | |
c906108c | 7886 | static void |
fba45db2 | 7887 | enable_command (char *args, int from_tty) |
c906108c | 7888 | { |
52f0bd74 | 7889 | struct breakpoint *bpt; |
c906108c SS |
7890 | if (args == 0) |
7891 | ALL_BREAKPOINTS (bpt) | |
7892 | switch (bpt->type) | |
c5aa993b JM |
7893 | { |
7894 | case bp_none: | |
8a3fe4f8 | 7895 | warning (_("attempted to enable apparently deleted breakpoint #%d?"), |
53a5351d | 7896 | bpt->number); |
c5aa993b JM |
7897 | continue; |
7898 | case bp_breakpoint: | |
ce78b96d | 7899 | case bp_catchpoint: |
c5aa993b JM |
7900 | case bp_hardware_breakpoint: |
7901 | case bp_watchpoint: | |
7902 | case bp_hardware_watchpoint: | |
7903 | case bp_read_watchpoint: | |
7904 | case bp_access_watchpoint: | |
7905 | enable_breakpoint (bpt); | |
7906 | default: | |
7907 | continue; | |
7908 | } | |
0d381245 VP |
7909 | else if (strchr (args, '.')) |
7910 | { | |
7911 | struct bp_location *loc = find_location_by_number (args); | |
7912 | if (loc) | |
7913 | loc->enabled = 1; | |
b60e7edf | 7914 | update_global_location_list (1); |
0d381245 | 7915 | } |
c906108c SS |
7916 | else |
7917 | map_breakpoint_numbers (args, enable_breakpoint); | |
7918 | } | |
7919 | ||
7920 | static void | |
fba45db2 | 7921 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c | 7922 | { |
b5de0fa7 | 7923 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
7924 | } |
7925 | ||
c906108c | 7926 | static void |
fba45db2 | 7927 | enable_once_command (char *args, int from_tty) |
c906108c SS |
7928 | { |
7929 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
7930 | } | |
7931 | ||
7932 | static void | |
fba45db2 | 7933 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c | 7934 | { |
b5de0fa7 | 7935 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
7936 | } |
7937 | ||
c906108c | 7938 | static void |
fba45db2 | 7939 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
7940 | { |
7941 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
7942 | } | |
7943 | \f | |
fa8d40ab JJ |
7944 | static void |
7945 | set_breakpoint_cmd (char *args, int from_tty) | |
7946 | { | |
7947 | } | |
7948 | ||
7949 | static void | |
7950 | show_breakpoint_cmd (char *args, int from_tty) | |
7951 | { | |
7952 | } | |
7953 | ||
c906108c SS |
7954 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
7955 | ||
7956 | struct symtabs_and_lines | |
fba45db2 | 7957 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
7958 | { |
7959 | struct symtabs_and_lines sals; | |
7960 | if (string == 0) | |
8a3fe4f8 | 7961 | error (_("Empty line specification.")); |
c906108c SS |
7962 | if (default_breakpoint_valid) |
7963 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
7964 | default_breakpoint_symtab, |
7965 | default_breakpoint_line, | |
68219205 | 7966 | (char ***) NULL, NULL); |
c906108c SS |
7967 | else |
7968 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 7969 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c | 7970 | if (*string) |
8a3fe4f8 | 7971 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
7972 | return sals; |
7973 | } | |
8181d85f DJ |
7974 | |
7975 | /* Create and insert a raw software breakpoint at PC. Return an | |
7976 | identifier, which should be used to remove the breakpoint later. | |
7977 | In general, places which call this should be using something on the | |
7978 | breakpoint chain instead; this function should be eliminated | |
7979 | someday. */ | |
7980 | ||
7981 | void * | |
7982 | deprecated_insert_raw_breakpoint (CORE_ADDR pc) | |
7983 | { | |
7984 | struct bp_target_info *bp_tgt; | |
7985 | ||
7986 | bp_tgt = xmalloc (sizeof (struct bp_target_info)); | |
7987 | memset (bp_tgt, 0, sizeof (struct bp_target_info)); | |
7988 | ||
7989 | bp_tgt->placed_address = pc; | |
7990 | if (target_insert_breakpoint (bp_tgt) != 0) | |
7991 | { | |
7992 | /* Could not insert the breakpoint. */ | |
7993 | xfree (bp_tgt); | |
7994 | return NULL; | |
7995 | } | |
7996 | ||
7997 | return bp_tgt; | |
7998 | } | |
7999 | ||
8000 | /* Remove a breakpoint BP inserted by deprecated_insert_raw_breakpoint. */ | |
8001 | ||
8002 | int | |
8003 | deprecated_remove_raw_breakpoint (void *bp) | |
8004 | { | |
8005 | struct bp_target_info *bp_tgt = bp; | |
8006 | int ret; | |
8007 | ||
8008 | ret = target_remove_breakpoint (bp_tgt); | |
8009 | xfree (bp_tgt); | |
8010 | ||
8011 | return ret; | |
8012 | } | |
8013 | ||
8014 | /* One (or perhaps two) breakpoints used for software single stepping. */ | |
8015 | ||
8016 | static void *single_step_breakpoints[2]; | |
8017 | ||
8018 | /* Create and insert a breakpoint for software single step. */ | |
8019 | ||
8020 | void | |
8021 | insert_single_step_breakpoint (CORE_ADDR next_pc) | |
8022 | { | |
8023 | void **bpt_p; | |
8024 | ||
8025 | if (single_step_breakpoints[0] == NULL) | |
8026 | bpt_p = &single_step_breakpoints[0]; | |
8027 | else | |
8028 | { | |
8029 | gdb_assert (single_step_breakpoints[1] == NULL); | |
8030 | bpt_p = &single_step_breakpoints[1]; | |
8031 | } | |
8032 | ||
8033 | /* NOTE drow/2006-04-11: A future improvement to this function would be | |
8034 | to only create the breakpoints once, and actually put them on the | |
8035 | breakpoint chain. That would let us use set_raw_breakpoint. We could | |
8036 | adjust the addresses each time they were needed. Doing this requires | |
8037 | corresponding changes elsewhere where single step breakpoints are | |
8038 | handled, however. So, for now, we use this. */ | |
8039 | ||
8040 | *bpt_p = deprecated_insert_raw_breakpoint (next_pc); | |
8041 | if (*bpt_p == NULL) | |
1893a4c0 | 8042 | error (_("Could not insert single-step breakpoint at 0x%s"), |
8181d85f DJ |
8043 | paddr_nz (next_pc)); |
8044 | } | |
8045 | ||
8046 | /* Remove and delete any breakpoints used for software single step. */ | |
8047 | ||
8048 | void | |
8049 | remove_single_step_breakpoints (void) | |
8050 | { | |
8051 | gdb_assert (single_step_breakpoints[0] != NULL); | |
8052 | ||
8053 | /* See insert_single_step_breakpoint for more about this deprecated | |
8054 | call. */ | |
8055 | deprecated_remove_raw_breakpoint (single_step_breakpoints[0]); | |
8056 | single_step_breakpoints[0] = NULL; | |
8057 | ||
8058 | if (single_step_breakpoints[1] != NULL) | |
8059 | { | |
8060 | deprecated_remove_raw_breakpoint (single_step_breakpoints[1]); | |
8061 | single_step_breakpoints[1] = NULL; | |
8062 | } | |
8063 | } | |
8064 | ||
1aafd4da UW |
8065 | /* Check whether a software single-step breakpoint is inserted at PC. */ |
8066 | ||
8067 | static int | |
8068 | single_step_breakpoint_inserted_here_p (CORE_ADDR pc) | |
8069 | { | |
8070 | int i; | |
8071 | ||
8072 | for (i = 0; i < 2; i++) | |
8073 | { | |
8074 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
8075 | if (bp_tgt && bp_tgt->placed_address == pc) | |
8076 | return 1; | |
8077 | } | |
8078 | ||
8079 | return 0; | |
8080 | } | |
8081 | ||
c906108c | 8082 | \f |
31e2b00f AS |
8083 | /* This help string is used for the break, hbreak, tbreak and thbreak commands. |
8084 | It is defined as a macro to prevent duplication. | |
8085 | COMMAND should be a string constant containing the name of the command. */ | |
8086 | #define BREAK_ARGS_HELP(command) \ | |
8087 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
8088 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
8089 | If a line number is specified, break at start of code for that line.\n\ | |
8090 | If a function is specified, break at start of code for that function.\n\ | |
8091 | If an address is specified, break at that exact address.\n\ | |
8092 | With no LOCATION, uses current execution address of selected stack frame.\n\ | |
8093 | This is useful for breaking on return to a stack frame.\n\ | |
8094 | \n\ | |
8095 | THREADNUM is the number from \"info threads\".\n\ | |
8096 | CONDITION is a boolean expression.\n\ | |
8097 | \n\ | |
8098 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
8099 | \n\ | |
8100 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
8101 | ||
44feb3ce TT |
8102 | /* List of subcommands for "catch". */ |
8103 | static struct cmd_list_element *catch_cmdlist; | |
8104 | ||
8105 | /* List of subcommands for "tcatch". */ | |
8106 | static struct cmd_list_element *tcatch_cmdlist; | |
8107 | ||
8108 | /* Like add_cmd, but add the command to both the "catch" and "tcatch" | |
8109 | lists, and pass some additional user data to the command function. */ | |
8110 | static void | |
8111 | add_catch_command (char *name, char *docstring, | |
8112 | void (*sfunc) (char *args, int from_tty, | |
8113 | struct cmd_list_element *command), | |
8114 | void *user_data_catch, | |
8115 | void *user_data_tcatch) | |
8116 | { | |
8117 | struct cmd_list_element *command; | |
8118 | ||
8119 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
8120 | &catch_cmdlist); | |
8121 | set_cmd_sfunc (command, sfunc); | |
8122 | set_cmd_context (command, user_data_catch); | |
8123 | ||
8124 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
8125 | &tcatch_cmdlist); | |
8126 | set_cmd_sfunc (command, sfunc); | |
8127 | set_cmd_context (command, user_data_tcatch); | |
8128 | } | |
8129 | ||
c906108c | 8130 | void |
fba45db2 | 8131 | _initialize_breakpoint (void) |
c906108c | 8132 | { |
fa8d40ab JJ |
8133 | static struct cmd_list_element *breakpoint_set_cmdlist; |
8134 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
c906108c SS |
8135 | struct cmd_list_element *c; |
8136 | ||
84acb35a | 8137 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
84acb35a | 8138 | |
c906108c SS |
8139 | breakpoint_chain = 0; |
8140 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
8141 | before a breakpoint is set. */ | |
8142 | breakpoint_count = 0; | |
8143 | ||
1bedd215 AC |
8144 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
8145 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
8146 | Usage is `ignore N COUNT'.")); | |
c906108c | 8147 | if (xdb_commands) |
c5aa993b | 8148 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 8149 | |
1bedd215 AC |
8150 | add_com ("commands", class_breakpoint, commands_command, _("\ |
8151 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
8152 | Give breakpoint number as argument after \"commands\".\n\ |
8153 | With no argument, the targeted breakpoint is the last one set.\n\ | |
8154 | The commands themselves follow starting on the next line.\n\ | |
8155 | Type a line containing \"end\" to indicate the end of them.\n\ | |
8156 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 8157 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 8158 | |
1bedd215 AC |
8159 | add_com ("condition", class_breakpoint, condition_command, _("\ |
8160 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 8161 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 8162 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 8163 | |
1bedd215 | 8164 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 8165 | Set a temporary breakpoint.\n\ |
c906108c SS |
8166 | Like \"break\" except the breakpoint is only temporary,\n\ |
8167 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
8168 | by using \"enable delete\" on the breakpoint number.\n\ |
8169 | \n" | |
8170 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 8171 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 8172 | |
1bedd215 | 8173 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
31e2b00f | 8174 | Set a hardware assisted breakpoint.\n\ |
c906108c | 8175 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
8176 | some target hardware may not have this support.\n\ |
8177 | \n" | |
8178 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 8179 | set_cmd_completer (c, location_completer); |
c906108c | 8180 | |
1bedd215 | 8181 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 8182 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 8183 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
8184 | so it will be deleted when hit.\n\ |
8185 | \n" | |
8186 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 8187 | set_cmd_completer (c, location_completer); |
c906108c | 8188 | |
1bedd215 AC |
8189 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
8190 | Enable some breakpoints.\n\ | |
c906108c SS |
8191 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8192 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8193 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8194 | With a subcommand you can enable temporarily."), |
c906108c SS |
8195 | &enablelist, "enable ", 1, &cmdlist); |
8196 | if (xdb_commands) | |
1bedd215 AC |
8197 | add_com ("ab", class_breakpoint, enable_command, _("\ |
8198 | Enable some breakpoints.\n\ | |
c906108c SS |
8199 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8200 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8201 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8202 | With a subcommand you can enable temporarily.")); |
c906108c SS |
8203 | |
8204 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
8205 | ||
1bedd215 AC |
8206 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
8207 | Enable some breakpoints.\n\ | |
c906108c SS |
8208 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8209 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8210 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 8211 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 8212 | |
1a966eab AC |
8213 | add_cmd ("once", no_class, enable_once_command, _("\ |
8214 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8215 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8216 | &enablebreaklist); |
8217 | ||
1a966eab AC |
8218 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8219 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8220 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8221 | &enablebreaklist); |
8222 | ||
1a966eab AC |
8223 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8224 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8225 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8226 | &enablelist); |
8227 | ||
1a966eab AC |
8228 | add_cmd ("once", no_class, enable_once_command, _("\ |
8229 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8230 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8231 | &enablelist); |
8232 | ||
1bedd215 AC |
8233 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
8234 | Disable some breakpoints.\n\ | |
c906108c SS |
8235 | Arguments are breakpoint numbers with spaces in between.\n\ |
8236 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 8237 | A disabled breakpoint is not forgotten, but has no effect until reenabled."), |
c906108c SS |
8238 | &disablelist, "disable ", 1, &cmdlist); |
8239 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
8240 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
8241 | if (xdb_commands) | |
1bedd215 AC |
8242 | add_com ("sb", class_breakpoint, disable_command, _("\ |
8243 | Disable some breakpoints.\n\ | |
c906108c SS |
8244 | Arguments are breakpoint numbers with spaces in between.\n\ |
8245 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 8246 | A disabled breakpoint is not forgotten, but has no effect until reenabled.")); |
c906108c | 8247 | |
1a966eab AC |
8248 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
8249 | Disable some breakpoints.\n\ | |
c906108c SS |
8250 | Arguments are breakpoint numbers with spaces in between.\n\ |
8251 | To disable all breakpoints, give no argument.\n\ | |
8252 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
1a966eab | 8253 | This command may be abbreviated \"disable\"."), |
c906108c SS |
8254 | &disablelist); |
8255 | ||
1bedd215 AC |
8256 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
8257 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
8258 | Arguments are breakpoint numbers with spaces in between.\n\ |
8259 | To delete all breakpoints, give no argument.\n\ | |
8260 | \n\ | |
8261 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 8262 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
8263 | &deletelist, "delete ", 1, &cmdlist); |
8264 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 8265 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 8266 | if (xdb_commands) |
1bedd215 AC |
8267 | add_com ("db", class_breakpoint, delete_command, _("\ |
8268 | Delete some breakpoints.\n\ | |
c906108c | 8269 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 8270 | To delete all breakpoints, give no argument.\n")); |
c906108c | 8271 | |
1a966eab AC |
8272 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
8273 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
8274 | Arguments are breakpoint numbers with spaces in between.\n\ |
8275 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 8276 | This command may be abbreviated \"delete\"."), |
c906108c SS |
8277 | &deletelist); |
8278 | ||
1bedd215 AC |
8279 | add_com ("clear", class_breakpoint, clear_command, _("\ |
8280 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
8281 | Argument may be line number, function name, or \"*\" and an address.\n\ |
8282 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
8283 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
8284 | If an address is specified, breakpoints at that address are cleared.\n\ |
8285 | \n\ | |
8286 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
8287 | is executing in.\n\ |
8288 | \n\ | |
1bedd215 | 8289 | See also the \"delete\" command which clears breakpoints by number.")); |
c906108c | 8290 | |
1bedd215 | 8291 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
8292 | Set breakpoint at specified line or function.\n" |
8293 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 8294 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 8295 | |
c906108c SS |
8296 | add_com_alias ("b", "break", class_run, 1); |
8297 | add_com_alias ("br", "break", class_run, 1); | |
8298 | add_com_alias ("bre", "break", class_run, 1); | |
8299 | add_com_alias ("brea", "break", class_run, 1); | |
8300 | ||
502fd408 | 8301 | if (xdb_commands) |
c906108c SS |
8302 | { |
8303 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
8304 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
c906108c SS |
8305 | } |
8306 | ||
8307 | if (dbx_commands) | |
8308 | { | |
1bedd215 AC |
8309 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
8310 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
8311 | &stoplist, "stop ", 1, &cmdlist); |
8312 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 8313 | _("Break in function or address."), &stoplist); |
c5aa993b | 8314 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 8315 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
8316 | add_com ("status", class_info, breakpoints_info, _("\ |
8317 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8318 | The \"Type\" column indicates one of:\n\ |
8319 | \tbreakpoint - normal breakpoint\n\ | |
8320 | \twatchpoint - watchpoint\n\ | |
8321 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8322 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8323 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8324 | address and file/line number respectively.\n\ |
8325 | \n\ | |
8326 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8327 | are set to the address of the last breakpoint listed unless the command\n\ |
8328 | is prefixed with \"server \".\n\n\ | |
c906108c | 8329 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8330 | breakpoint set.")); |
c906108c SS |
8331 | } |
8332 | ||
1bedd215 AC |
8333 | add_info ("breakpoints", breakpoints_info, _("\ |
8334 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8335 | The \"Type\" column indicates one of:\n\ |
8336 | \tbreakpoint - normal breakpoint\n\ | |
8337 | \twatchpoint - watchpoint\n\ | |
8338 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8339 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8340 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8341 | address and file/line number respectively.\n\ |
8342 | \n\ | |
8343 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8344 | are set to the address of the last breakpoint listed unless the command\n\ |
8345 | is prefixed with \"server \".\n\n\ | |
c906108c | 8346 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8347 | breakpoint set.")); |
c906108c SS |
8348 | |
8349 | if (xdb_commands) | |
1bedd215 AC |
8350 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
8351 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8352 | The \"Type\" column indicates one of:\n\ |
8353 | \tbreakpoint - normal breakpoint\n\ | |
8354 | \twatchpoint - watchpoint\n\ | |
8355 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8356 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8357 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8358 | address and file/line number respectively.\n\ |
8359 | \n\ | |
8360 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8361 | are set to the address of the last breakpoint listed unless the command\n\ |
8362 | is prefixed with \"server \".\n\n\ | |
c906108c | 8363 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8364 | breakpoint set.")); |
c906108c | 8365 | |
1a966eab AC |
8366 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
8367 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8368 | The \"Type\" column indicates one of:\n\ |
8369 | \tbreakpoint - normal breakpoint\n\ | |
8370 | \twatchpoint - watchpoint\n\ | |
8371 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
8372 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
8373 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
8374 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
8375 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
8376 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
8377 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
8378 | address and file/line number respectively.\n\ |
8379 | \n\ | |
8380 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8381 | are set to the address of the last breakpoint listed unless the command\n\ |
8382 | is prefixed with \"server \".\n\n\ | |
c906108c | 8383 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 8384 | breakpoint set."), |
c906108c SS |
8385 | &maintenanceinfolist); |
8386 | ||
44feb3ce TT |
8387 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
8388 | Set catchpoints to catch events."), | |
8389 | &catch_cmdlist, "catch ", | |
8390 | 0/*allow-unknown*/, &cmdlist); | |
8391 | ||
8392 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
8393 | Set temporary catchpoints to catch events."), | |
8394 | &tcatch_cmdlist, "tcatch ", | |
8395 | 0/*allow-unknown*/, &cmdlist); | |
8396 | ||
8397 | /* Add catch and tcatch sub-commands. */ | |
8398 | add_catch_command ("catch", _("\ | |
8399 | Catch an exception, when caught.\n\ | |
8400 | With an argument, catch only exceptions with the given name."), | |
8401 | catch_catch_command, | |
8402 | CATCH_PERMANENT, | |
8403 | CATCH_TEMPORARY); | |
8404 | add_catch_command ("throw", _("\ | |
8405 | Catch an exception, when thrown.\n\ | |
8406 | With an argument, catch only exceptions with the given name."), | |
8407 | catch_throw_command, | |
8408 | CATCH_PERMANENT, | |
8409 | CATCH_TEMPORARY); | |
8410 | add_catch_command ("fork", _("Catch calls to fork."), | |
8411 | catch_fork_command_1, | |
8412 | (void *) (uintptr_t) catch_fork_permanent, | |
8413 | (void *) (uintptr_t) catch_fork_temporary); | |
8414 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
8415 | catch_fork_command_1, | |
8416 | (void *) (uintptr_t) catch_vfork_permanent, | |
8417 | (void *) (uintptr_t) catch_vfork_temporary); | |
8418 | add_catch_command ("exec", _("Catch calls to exec."), | |
8419 | catch_exec_command_1, | |
8420 | CATCH_PERMANENT, | |
8421 | CATCH_TEMPORARY); | |
44feb3ce TT |
8422 | add_catch_command ("exception", _("\ |
8423 | Catch Ada exceptions, when raised.\n\ | |
8424 | With an argument, catch only exceptions with the given name."), | |
8425 | catch_ada_exception_command, | |
8426 | CATCH_PERMANENT, | |
8427 | CATCH_TEMPORARY); | |
8428 | add_catch_command ("assert", _("\ | |
8429 | Catch failed Ada assertions, when raised.\n\ | |
8430 | With an argument, catch only exceptions with the given name."), | |
8431 | catch_assert_command, | |
8432 | CATCH_PERMANENT, | |
8433 | CATCH_TEMPORARY); | |
c5aa993b | 8434 | |
1bedd215 AC |
8435 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
8436 | Set a watchpoint for an expression.\n\ | |
c906108c | 8437 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8438 | an expression changes.")); |
65d12d83 | 8439 | set_cmd_completer (c, expression_completer); |
c906108c | 8440 | |
1bedd215 AC |
8441 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
8442 | Set a read watchpoint for an expression.\n\ | |
c906108c | 8443 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8444 | an expression is read.")); |
65d12d83 | 8445 | set_cmd_completer (c, expression_completer); |
c906108c | 8446 | |
1bedd215 AC |
8447 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
8448 | Set a watchpoint for an expression.\n\ | |
c906108c | 8449 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8450 | an expression is either read or written.")); |
65d12d83 | 8451 | set_cmd_completer (c, expression_completer); |
c906108c SS |
8452 | |
8453 | add_info ("watchpoints", breakpoints_info, | |
1bedd215 | 8454 | _("Synonym for ``info breakpoints''.")); |
c906108c SS |
8455 | |
8456 | ||
920d2a44 AC |
8457 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
8458 | respond to changes - contrary to the description. */ | |
85c07804 AC |
8459 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
8460 | &can_use_hw_watchpoints, _("\ | |
8461 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
8462 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
8463 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
8464 | such is available. (However, any hardware watchpoints that were\n\ | |
8465 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
8466 | hardware.)"), |
8467 | NULL, | |
920d2a44 | 8468 | show_can_use_hw_watchpoints, |
85c07804 | 8469 | &setlist, &showlist); |
c906108c SS |
8470 | |
8471 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 8472 | |
1bedd215 | 8473 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
8474 | Breakpoint specific settings\n\ |
8475 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 8476 | pending breakpoint behavior"), |
fa8d40ab JJ |
8477 | &breakpoint_set_cmdlist, "set breakpoint ", |
8478 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 8479 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
8480 | Breakpoint specific settings\n\ |
8481 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 8482 | pending breakpoint behavior"), |
fa8d40ab JJ |
8483 | &breakpoint_show_cmdlist, "show breakpoint ", |
8484 | 0/*allow-unknown*/, &showlist); | |
8485 | ||
7915a72c AC |
8486 | add_setshow_auto_boolean_cmd ("pending", no_class, |
8487 | &pending_break_support, _("\ | |
8488 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
8489 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
8490 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
8491 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
8492 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 8493 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 8494 | NULL, |
920d2a44 | 8495 | show_pending_break_support, |
6e1d7d6c AC |
8496 | &breakpoint_set_cmdlist, |
8497 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
8498 | |
8499 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
8500 | |
8501 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
8502 | &automatic_hardware_breakpoints, _("\ | |
8503 | Set automatic usage of hardware breakpoints."), _("\ | |
8504 | Show automatic usage of hardware breakpoints."), _("\ | |
8505 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
8506 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
8507 | a warning will be emitted for such breakpoints."), | |
8508 | NULL, | |
8509 | show_automatic_hardware_breakpoints, | |
8510 | &breakpoint_set_cmdlist, | |
8511 | &breakpoint_show_cmdlist); | |
74960c60 | 8512 | |
33e5cbd6 PA |
8513 | add_setshow_enum_cmd ("always-inserted", class_support, |
8514 | always_inserted_enums, &always_inserted_mode, _("\ | |
74960c60 VP |
8515 | Set mode for inserting breakpoints."), _("\ |
8516 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
8517 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
8518 | resumed, and removed when execution stops. When this mode is on,\n\ | |
8519 | breakpoints are inserted immediately and removed only when the user\n\ | |
8520 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
8521 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
8522 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
8523 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
8524 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
74960c60 VP |
8525 | NULL, |
8526 | &show_always_inserted_mode, | |
8527 | &breakpoint_set_cmdlist, | |
8528 | &breakpoint_show_cmdlist); | |
765dc015 VP |
8529 | |
8530 | automatic_hardware_breakpoints = 1; | |
f3b1572e PA |
8531 | |
8532 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
c906108c | 8533 | } |