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 | |
2cec12e5 AR |
194 | static const char * |
195 | bpdisp_text (enum bpdisp disp) | |
196 | { | |
197 | /* NOTE: the following values are a part of MI protocol and represent | |
198 | values of 'disp' field returned when inferior stops at a breakpoint. */ | |
199 | static char *bpdisps[] = {"del", "dstp", "dis", "keep"}; | |
200 | return bpdisps[(int) disp]; | |
201 | } | |
c906108c | 202 | |
2cec12e5 | 203 | /* Prototypes for exported functions. */ |
c906108c SS |
204 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
205 | if such is available. */ | |
206 | static int can_use_hw_watchpoints; | |
207 | ||
920d2a44 AC |
208 | static void |
209 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
210 | struct cmd_list_element *c, | |
211 | const char *value) | |
212 | { | |
213 | fprintf_filtered (file, _("\ | |
214 | Debugger's willingness to use watchpoint hardware is %s.\n"), | |
215 | value); | |
216 | } | |
217 | ||
fa8d40ab JJ |
218 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
219 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
220 | for unrecognized breakpoint locations. | |
221 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ | |
222 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
223 | static void |
224 | show_pending_break_support (struct ui_file *file, int from_tty, | |
225 | struct cmd_list_element *c, | |
226 | const char *value) | |
227 | { | |
228 | fprintf_filtered (file, _("\ | |
229 | Debugger's behavior regarding pending breakpoints is %s.\n"), | |
230 | value); | |
231 | } | |
fa8d40ab | 232 | |
765dc015 VP |
233 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
234 | set with "break" but falling in read-only memory. | |
235 | If 0, gdb will warn about such breakpoints, but won't automatically | |
236 | use hardware breakpoints. */ | |
237 | static int automatic_hardware_breakpoints; | |
238 | static void | |
239 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
240 | struct cmd_list_element *c, | |
241 | const char *value) | |
242 | { | |
243 | fprintf_filtered (file, _("\ | |
244 | Automatic usage of hardware breakpoints is %s.\n"), | |
245 | value); | |
246 | } | |
247 | ||
33e5cbd6 PA |
248 | /* If on, gdb will keep breakpoints inserted even as inferior is |
249 | stopped, and immediately insert any new breakpoints. If off, gdb | |
250 | will insert breakpoints into inferior only when resuming it, and | |
251 | will remove breakpoints upon stop. If auto, GDB will behave as ON | |
252 | if in non-stop mode, and as OFF if all-stop mode.*/ | |
253 | ||
254 | static const char always_inserted_auto[] = "auto"; | |
255 | static const char always_inserted_on[] = "on"; | |
256 | static const char always_inserted_off[] = "off"; | |
257 | static const char *always_inserted_enums[] = { | |
258 | always_inserted_auto, | |
259 | always_inserted_off, | |
260 | always_inserted_on, | |
261 | NULL | |
262 | }; | |
263 | static const char *always_inserted_mode = always_inserted_auto; | |
264 | static void | |
74960c60 | 265 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 266 | struct cmd_list_element *c, const char *value) |
74960c60 | 267 | { |
33e5cbd6 PA |
268 | if (always_inserted_mode == always_inserted_auto) |
269 | fprintf_filtered (file, _("\ | |
270 | Always inserted breakpoint mode is %s (currently %s).\n"), | |
271 | value, | |
272 | breakpoints_always_inserted_mode () ? "on" : "off"); | |
273 | else | |
274 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), value); | |
74960c60 VP |
275 | } |
276 | ||
33e5cbd6 PA |
277 | int |
278 | breakpoints_always_inserted_mode (void) | |
279 | { | |
280 | return (always_inserted_mode == always_inserted_on | |
281 | || (always_inserted_mode == always_inserted_auto && non_stop)); | |
282 | } | |
765dc015 | 283 | |
a14ed312 | 284 | void _initialize_breakpoint (void); |
c906108c | 285 | |
c906108c SS |
286 | /* Are we executing breakpoint commands? */ |
287 | static int executing_breakpoint_commands; | |
288 | ||
c02f5703 MS |
289 | /* Are overlay event breakpoints enabled? */ |
290 | static int overlay_events_enabled; | |
291 | ||
c906108c SS |
292 | /* Walk the following statement or block through all breakpoints. |
293 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
294 | breakpoint. */ | |
295 | ||
5c44784c | 296 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 297 | |
5c44784c JM |
298 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
299 | for (B = breakpoint_chain; \ | |
300 | B ? (TMP=B->next, 1): 0; \ | |
301 | B = TMP) | |
c906108c | 302 | |
7cc221ef DJ |
303 | /* Similar iterators for the low-level breakpoints. */ |
304 | ||
0d381245 | 305 | #define ALL_BP_LOCATIONS(B) for (B = bp_location_chain; B; B = B->global_next) |
7cc221ef DJ |
306 | |
307 | #define ALL_BP_LOCATIONS_SAFE(B,TMP) \ | |
308 | for (B = bp_location_chain; \ | |
0d381245 | 309 | B ? (TMP=B->global_next, 1): 0; \ |
7cc221ef DJ |
310 | B = TMP) |
311 | ||
7cc221ef | 312 | /* Chains of all breakpoints defined. */ |
c906108c SS |
313 | |
314 | struct breakpoint *breakpoint_chain; | |
315 | ||
7cc221ef DJ |
316 | struct bp_location *bp_location_chain; |
317 | ||
20874c92 VP |
318 | /* The locations that no longer correspond to any breakpoint, |
319 | unlinked from bp_location_chain, but for which a hit | |
320 | may still be reported by a target. */ | |
321 | VEC(bp_location_p) *moribund_locations = NULL; | |
322 | ||
c906108c SS |
323 | /* Number of last breakpoint made. */ |
324 | ||
325 | int breakpoint_count; | |
326 | ||
468d015d JJ |
327 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
328 | static int | |
329 | breakpoint_enabled (struct breakpoint *b) | |
330 | { | |
0d381245 | 331 | return (b->enable_state == bp_enabled); |
468d015d JJ |
332 | } |
333 | ||
c906108c SS |
334 | /* Set breakpoint count to NUM. */ |
335 | ||
336 | void | |
fba45db2 | 337 | set_breakpoint_count (int num) |
c906108c SS |
338 | { |
339 | breakpoint_count = num; | |
340 | set_internalvar (lookup_internalvar ("bpnum"), | |
8b9b9e1a | 341 | value_from_longest (builtin_type_int32, (LONGEST) num)); |
c906108c SS |
342 | } |
343 | ||
344 | /* Used in run_command to zero the hit count when a new run starts. */ | |
345 | ||
346 | void | |
fba45db2 | 347 | clear_breakpoint_hit_counts (void) |
c906108c SS |
348 | { |
349 | struct breakpoint *b; | |
350 | ||
351 | ALL_BREAKPOINTS (b) | |
352 | b->hit_count = 0; | |
353 | } | |
354 | ||
355 | /* Default address, symtab and line to put a breakpoint at | |
356 | for "break" command with no arg. | |
357 | if default_breakpoint_valid is zero, the other three are | |
358 | not valid, and "break" with no arg is an error. | |
359 | ||
360 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
361 | ||
362 | int default_breakpoint_valid; | |
363 | CORE_ADDR default_breakpoint_address; | |
364 | struct symtab *default_breakpoint_symtab; | |
365 | int default_breakpoint_line; | |
366 | \f | |
367 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
368 | Advance *PP after the string and any trailing whitespace. | |
369 | ||
370 | Currently the string can either be a number or "$" followed by the name | |
371 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c | 372 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
40c03ae8 EZ |
373 | |
374 | If the string is a NULL pointer, that denotes the last breakpoint. | |
5c44784c JM |
375 | |
376 | TRAILER is a character which can be found after the number; most | |
377 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 378 | static int |
fba45db2 | 379 | get_number_trailer (char **pp, int trailer) |
c906108c | 380 | { |
5c44784c | 381 | int retval = 0; /* default */ |
c906108c SS |
382 | char *p = *pp; |
383 | ||
384 | if (p == NULL) | |
385 | /* Empty line means refer to the last breakpoint. */ | |
386 | return breakpoint_count; | |
387 | else if (*p == '$') | |
388 | { | |
389 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 390 | to pass to lookup_internalvar(). */ |
c906108c SS |
391 | char *varname; |
392 | char *start = ++p; | |
278cd55f | 393 | struct value *val; |
c906108c SS |
394 | |
395 | while (isalnum (*p) || *p == '_') | |
396 | p++; | |
397 | varname = (char *) alloca (p - start + 1); | |
398 | strncpy (varname, start, p - start); | |
399 | varname[p - start] = '\0'; | |
400 | val = value_of_internalvar (lookup_internalvar (varname)); | |
df407dfe | 401 | if (TYPE_CODE (value_type (val)) == TYPE_CODE_INT) |
5c44784c JM |
402 | retval = (int) value_as_long (val); |
403 | else | |
404 | { | |
a3f17187 | 405 | printf_filtered (_("Convenience variable must have integer value.\n")); |
5c44784c JM |
406 | retval = 0; |
407 | } | |
c906108c SS |
408 | } |
409 | else | |
410 | { | |
411 | if (*p == '-') | |
412 | ++p; | |
413 | while (*p >= '0' && *p <= '9') | |
414 | ++p; | |
415 | if (p == *pp) | |
416 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
417 | { |
418 | /* Skip non-numeric token */ | |
419 | while (*p && !isspace((int) *p)) | |
420 | ++p; | |
421 | /* Return zero, which caller must interpret as error. */ | |
422 | retval = 0; | |
423 | } | |
424 | else | |
425 | retval = atoi (*pp); | |
426 | } | |
427 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
428 | { | |
429 | /* Trailing junk: return 0 and let caller print error msg. */ | |
430 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
431 | ++p; | |
432 | retval = 0; | |
c906108c | 433 | } |
c906108c SS |
434 | while (isspace (*p)) |
435 | p++; | |
436 | *pp = p; | |
437 | return retval; | |
438 | } | |
5c44784c | 439 | |
11cf8741 | 440 | |
5c44784c JM |
441 | /* Like get_number_trailer, but don't allow a trailer. */ |
442 | int | |
fba45db2 | 443 | get_number (char **pp) |
5c44784c JM |
444 | { |
445 | return get_number_trailer (pp, '\0'); | |
446 | } | |
447 | ||
448 | /* Parse a number or a range. | |
449 | * A number will be of the form handled by get_number. | |
450 | * A range will be of the form <number1> - <number2>, and | |
451 | * will represent all the integers between number1 and number2, | |
452 | * inclusive. | |
453 | * | |
454 | * While processing a range, this fuction is called iteratively; | |
455 | * At each call it will return the next value in the range. | |
456 | * | |
457 | * At the beginning of parsing a range, the char pointer PP will | |
458 | * be advanced past <number1> and left pointing at the '-' token. | |
459 | * Subsequent calls will not advance the pointer until the range | |
460 | * is completed. The call that completes the range will advance | |
461 | * pointer PP past <number2>. | |
462 | */ | |
463 | ||
464 | int | |
fba45db2 | 465 | get_number_or_range (char **pp) |
5c44784c JM |
466 | { |
467 | static int last_retval, end_value; | |
468 | static char *end_ptr; | |
469 | static int in_range = 0; | |
470 | ||
471 | if (**pp != '-') | |
472 | { | |
473 | /* Default case: pp is pointing either to a solo number, | |
474 | or to the first number of a range. */ | |
475 | last_retval = get_number_trailer (pp, '-'); | |
476 | if (**pp == '-') | |
477 | { | |
478 | char **temp; | |
479 | ||
480 | /* This is the start of a range (<number1> - <number2>). | |
481 | Skip the '-', parse and remember the second number, | |
482 | and also remember the end of the final token. */ | |
483 | ||
484 | temp = &end_ptr; | |
485 | end_ptr = *pp + 1; | |
486 | while (isspace ((int) *end_ptr)) | |
487 | end_ptr++; /* skip white space */ | |
488 | end_value = get_number (temp); | |
489 | if (end_value < last_retval) | |
490 | { | |
8a3fe4f8 | 491 | error (_("inverted range")); |
5c44784c JM |
492 | } |
493 | else if (end_value == last_retval) | |
494 | { | |
495 | /* degenerate range (number1 == number2). Advance the | |
496 | token pointer so that the range will be treated as a | |
497 | single number. */ | |
498 | *pp = end_ptr; | |
499 | } | |
500 | else | |
501 | in_range = 1; | |
502 | } | |
503 | } | |
504 | else if (! in_range) | |
8a3fe4f8 | 505 | error (_("negative value")); |
5c44784c JM |
506 | else |
507 | { | |
508 | /* pp points to the '-' that betokens a range. All | |
509 | number-parsing has already been done. Return the next | |
510 | integer value (one greater than the saved previous value). | |
511 | Do not advance the token pointer 'pp' until the end of range | |
512 | is reached. */ | |
513 | ||
514 | if (++last_retval == end_value) | |
515 | { | |
516 | /* End of range reached; advance token pointer. */ | |
517 | *pp = end_ptr; | |
518 | in_range = 0; | |
519 | } | |
520 | } | |
521 | return last_retval; | |
522 | } | |
523 | ||
524 | ||
c906108c SS |
525 | \f |
526 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
527 | ||
528 | static void | |
fba45db2 | 529 | condition_command (char *arg, int from_tty) |
c906108c | 530 | { |
52f0bd74 | 531 | struct breakpoint *b; |
c906108c | 532 | char *p; |
52f0bd74 | 533 | int bnum; |
c906108c SS |
534 | |
535 | if (arg == 0) | |
e2e0b3e5 | 536 | error_no_arg (_("breakpoint number")); |
c906108c SS |
537 | |
538 | p = arg; | |
539 | bnum = get_number (&p); | |
5c44784c | 540 | if (bnum == 0) |
8a3fe4f8 | 541 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
542 | |
543 | ALL_BREAKPOINTS (b) | |
544 | if (b->number == bnum) | |
2f069f6f JB |
545 | { |
546 | struct bp_location *loc = b->loc; | |
547 | for (; loc; loc = loc->next) | |
548 | { | |
549 | if (loc->cond) | |
550 | { | |
551 | xfree (loc->cond); | |
552 | loc->cond = 0; | |
553 | } | |
554 | } | |
555 | if (b->cond_string != NULL) | |
556 | xfree (b->cond_string); | |
c906108c | 557 | |
2f069f6f JB |
558 | if (*p == 0) |
559 | { | |
560 | b->cond_string = NULL; | |
561 | if (from_tty) | |
562 | printf_filtered (_("Breakpoint %d now unconditional.\n"), bnum); | |
563 | } | |
564 | else | |
565 | { | |
566 | arg = p; | |
567 | /* I don't know if it matters whether this is the string the user | |
568 | typed in or the decompiled expression. */ | |
569 | b->cond_string = savestring (arg, strlen (arg)); | |
570 | b->condition_not_parsed = 0; | |
571 | for (loc = b->loc; loc; loc = loc->next) | |
572 | { | |
573 | arg = p; | |
574 | loc->cond = | |
575 | parse_exp_1 (&arg, block_for_pc (loc->address), 0); | |
576 | if (*arg) | |
577 | error (_("Junk at end of expression")); | |
578 | } | |
579 | } | |
580 | breakpoints_changed (); | |
383f836e | 581 | observer_notify_breakpoint_modified (b->number); |
2f069f6f JB |
582 | return; |
583 | } | |
c906108c | 584 | |
8a3fe4f8 | 585 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
586 | } |
587 | ||
c906108c | 588 | static void |
fba45db2 | 589 | commands_command (char *arg, int from_tty) |
c906108c | 590 | { |
52f0bd74 | 591 | struct breakpoint *b; |
c906108c | 592 | char *p; |
52f0bd74 | 593 | int bnum; |
c906108c SS |
594 | struct command_line *l; |
595 | ||
596 | /* If we allowed this, we would have problems with when to | |
597 | free the storage, if we change the commands currently | |
598 | being read from. */ | |
599 | ||
600 | if (executing_breakpoint_commands) | |
8a3fe4f8 | 601 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); |
c906108c SS |
602 | |
603 | p = arg; | |
604 | bnum = get_number (&p); | |
5c44784c | 605 | |
c906108c | 606 | if (p && *p) |
8a3fe4f8 | 607 | error (_("Unexpected extra arguments following breakpoint number.")); |
c5aa993b | 608 | |
c906108c SS |
609 | ALL_BREAKPOINTS (b) |
610 | if (b->number == bnum) | |
9ebf4acf AC |
611 | { |
612 | char *tmpbuf = xstrprintf ("Type commands for when breakpoint %d is hit, one per line.", | |
613 | bnum); | |
614 | struct cleanup *cleanups = make_cleanup (xfree, tmpbuf); | |
311a4e6b | 615 | l = read_command_lines (tmpbuf, from_tty, 1); |
9ebf4acf AC |
616 | do_cleanups (cleanups); |
617 | free_command_lines (&b->commands); | |
618 | b->commands = l; | |
619 | breakpoints_changed (); | |
383f836e | 620 | observer_notify_breakpoint_modified (b->number); |
9ebf4acf | 621 | return; |
c5aa993b | 622 | } |
8a3fe4f8 | 623 | error (_("No breakpoint number %d."), bnum); |
c906108c | 624 | } |
40c03ae8 EZ |
625 | |
626 | /* Like commands_command, but instead of reading the commands from | |
627 | input stream, takes them from an already parsed command structure. | |
628 | ||
629 | This is used by cli-script.c to DTRT with breakpoint commands | |
630 | that are part of if and while bodies. */ | |
631 | enum command_control_type | |
632 | commands_from_control_command (char *arg, struct command_line *cmd) | |
633 | { | |
634 | struct breakpoint *b; | |
635 | char *p; | |
636 | int bnum; | |
637 | ||
638 | /* If we allowed this, we would have problems with when to | |
639 | free the storage, if we change the commands currently | |
640 | being read from. */ | |
641 | ||
642 | if (executing_breakpoint_commands) | |
643 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); | |
644 | ||
645 | /* An empty string for the breakpoint number means the last | |
646 | breakpoint, but get_number expects a NULL pointer. */ | |
647 | if (arg && !*arg) | |
648 | p = NULL; | |
649 | else | |
650 | p = arg; | |
651 | bnum = get_number (&p); | |
652 | ||
653 | if (p && *p) | |
654 | error (_("Unexpected extra arguments following breakpoint number.")); | |
655 | ||
656 | ALL_BREAKPOINTS (b) | |
657 | if (b->number == bnum) | |
658 | { | |
659 | free_command_lines (&b->commands); | |
660 | if (cmd->body_count != 1) | |
661 | error (_("Invalid \"commands\" block structure.")); | |
662 | /* We need to copy the commands because if/while will free the | |
663 | list after it finishes execution. */ | |
664 | b->commands = copy_command_lines (cmd->body_list[0]); | |
665 | breakpoints_changed (); | |
383f836e | 666 | observer_notify_breakpoint_modified (b->number); |
40c03ae8 | 667 | return simple_control; |
2f069f6f | 668 | } |
40c03ae8 EZ |
669 | error (_("No breakpoint number %d."), bnum); |
670 | } | |
c906108c | 671 | \f |
8defab1a DJ |
672 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
673 | by replacing any memory breakpoints with their shadowed contents. */ | |
c906108c | 674 | |
8defab1a DJ |
675 | void |
676 | breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr, LONGEST len) | |
c906108c | 677 | { |
8defab1a | 678 | struct bp_location *b; |
c906108c SS |
679 | CORE_ADDR bp_addr = 0; |
680 | int bp_size = 0; | |
8defab1a | 681 | int bptoffset = 0; |
c5aa993b | 682 | |
ffce0d52 | 683 | ALL_BP_LOCATIONS (b) |
c5aa993b | 684 | { |
ffce0d52 | 685 | if (b->owner->type == bp_none) |
8a3fe4f8 | 686 | warning (_("reading through apparently deleted breakpoint #%d?"), |
ffce0d52 DJ |
687 | b->owner->number); |
688 | ||
689 | if (b->loc_type != bp_loc_software_breakpoint) | |
c5aa993b | 690 | continue; |
ffce0d52 | 691 | if (!b->inserted) |
c5aa993b JM |
692 | continue; |
693 | /* Addresses and length of the part of the breakpoint that | |
694 | we need to copy. */ | |
8181d85f DJ |
695 | bp_addr = b->target_info.placed_address; |
696 | bp_size = b->target_info.shadow_len; | |
c5aa993b | 697 | if (bp_size == 0) |
8181d85f | 698 | /* bp isn't valid, or doesn't shadow memory. */ |
c5aa993b | 699 | continue; |
8defab1a | 700 | |
c5aa993b JM |
701 | if (bp_addr + bp_size <= memaddr) |
702 | /* The breakpoint is entirely before the chunk of memory we | |
703 | are reading. */ | |
704 | continue; | |
8defab1a | 705 | |
c5aa993b JM |
706 | if (bp_addr >= memaddr + len) |
707 | /* The breakpoint is entirely after the chunk of memory we are | |
708 | reading. */ | |
709 | continue; | |
c5aa993b | 710 | |
8defab1a DJ |
711 | /* Offset within shadow_contents. */ |
712 | if (bp_addr < memaddr) | |
713 | { | |
714 | /* Only copy the second part of the breakpoint. */ | |
715 | bp_size -= memaddr - bp_addr; | |
716 | bptoffset = memaddr - bp_addr; | |
717 | bp_addr = memaddr; | |
718 | } | |
c5aa993b | 719 | |
8defab1a DJ |
720 | if (bp_addr + bp_size > memaddr + len) |
721 | { | |
722 | /* Only copy the first part of the breakpoint. */ | |
723 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
724 | } | |
c5aa993b | 725 | |
8defab1a DJ |
726 | memcpy (buf + bp_addr - memaddr, |
727 | b->target_info.shadow_contents + bptoffset, bp_size); | |
c5aa993b | 728 | } |
c906108c | 729 | } |
c906108c | 730 | \f |
c5aa993b | 731 | |
687595f9 | 732 | /* A wrapper function for inserting catchpoints. */ |
9cbc821d | 733 | static void |
687595f9 DJ |
734 | insert_catchpoint (struct ui_out *uo, void *args) |
735 | { | |
736 | struct breakpoint *b = (struct breakpoint *) args; | |
737 | int val = -1; | |
738 | ||
fe798b75 JB |
739 | gdb_assert (b->type == bp_catchpoint); |
740 | gdb_assert (b->ops != NULL && b->ops->insert != NULL); | |
741 | ||
742 | b->ops->insert (b); | |
687595f9 DJ |
743 | } |
744 | ||
a5606eee VP |
745 | static int |
746 | is_hardware_watchpoint (struct breakpoint *bpt) | |
747 | { | |
748 | return (bpt->type == bp_hardware_watchpoint | |
749 | || bpt->type == bp_read_watchpoint | |
750 | || bpt->type == bp_access_watchpoint); | |
751 | } | |
7270d8f2 | 752 | |
fa4727a6 DJ |
753 | /* Find the current value of a watchpoint on EXP. Return the value in |
754 | *VALP and *RESULTP and the chain of intermediate and final values | |
755 | in *VAL_CHAIN. RESULTP and VAL_CHAIN may be NULL if the caller does | |
756 | not need them. | |
757 | ||
ccc57cf9 | 758 | If a memory error occurs while evaluating the expression, *RESULTP will |
fa4727a6 DJ |
759 | be set to NULL. *RESULTP may be a lazy value, if the result could |
760 | not be read from memory. It is used to determine whether a value | |
761 | is user-specified (we should watch the whole value) or intermediate | |
762 | (we should watch only the bit used to locate the final value). | |
763 | ||
764 | If the final value, or any intermediate value, could not be read | |
765 | from memory, *VALP will be set to NULL. *VAL_CHAIN will still be | |
766 | set to any referenced values. *VALP will never be a lazy value. | |
767 | This is the value which we store in struct breakpoint. | |
768 | ||
769 | If VAL_CHAIN is non-NULL, *VAL_CHAIN will be released from the | |
770 | value chain. The caller must free the values individually. If | |
771 | VAL_CHAIN is NULL, all generated values will be left on the value | |
772 | chain. */ | |
773 | ||
774 | static void | |
775 | fetch_watchpoint_value (struct expression *exp, struct value **valp, | |
776 | struct value **resultp, struct value **val_chain) | |
777 | { | |
778 | struct value *mark, *new_mark, *result; | |
ccc57cf9 | 779 | volatile struct gdb_exception ex; |
fa4727a6 DJ |
780 | |
781 | *valp = NULL; | |
782 | if (resultp) | |
783 | *resultp = NULL; | |
784 | if (val_chain) | |
785 | *val_chain = NULL; | |
786 | ||
787 | /* Evaluate the expression. */ | |
788 | mark = value_mark (); | |
789 | result = NULL; | |
ccc57cf9 PA |
790 | |
791 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
792 | { | |
793 | result = evaluate_expression (exp); | |
794 | } | |
795 | if (ex.reason < 0) | |
796 | { | |
797 | /* Ignore memory errors, we want watchpoints pointing at | |
798 | inaccessible memory to still be created; otherwise, throw the | |
799 | error to some higher catcher. */ | |
800 | switch (ex.error) | |
801 | { | |
802 | case MEMORY_ERROR: | |
803 | break; | |
804 | default: | |
805 | throw_exception (ex); | |
806 | break; | |
807 | } | |
808 | } | |
809 | ||
fa4727a6 DJ |
810 | new_mark = value_mark (); |
811 | if (mark == new_mark) | |
812 | return; | |
813 | if (resultp) | |
814 | *resultp = result; | |
815 | ||
816 | /* Make sure it's not lazy, so that after the target stops again we | |
817 | have a non-lazy previous value to compare with. */ | |
818 | if (result != NULL | |
819 | && (!value_lazy (result) || gdb_value_fetch_lazy (result))) | |
820 | *valp = result; | |
821 | ||
822 | if (val_chain) | |
823 | { | |
824 | /* Return the chain of intermediate values. We use this to | |
825 | decide which addresses to watch. */ | |
826 | *val_chain = new_mark; | |
827 | value_release_to_mark (mark); | |
828 | } | |
829 | } | |
830 | ||
567e1b4e JB |
831 | /* Assuming that B is a watchpoint: |
832 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 833 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
834 | - Evaluate the condition if there is one, and store the result |
835 | in b->loc->cond. | |
a5606eee VP |
836 | - Update the list of values that must be watched in B->loc. |
837 | ||
838 | If the watchpoint is disabled, do nothing. If this is | |
839 | local watchpoint that is out of scope, delete it. */ | |
b40ce68a | 840 | static void |
a5606eee | 841 | update_watchpoint (struct breakpoint *b, int reparse) |
7270d8f2 | 842 | { |
a5606eee | 843 | int within_current_scope; |
a5606eee VP |
844 | struct frame_id saved_frame_id; |
845 | struct bp_location *loc; | |
846 | bpstat bs; | |
847 | ||
567e1b4e JB |
848 | /* We don't free locations. They are stored in bp_location_chain and |
849 | update_global_locations will eventually delete them and remove | |
850 | breakpoints if needed. */ | |
a5606eee VP |
851 | b->loc = NULL; |
852 | ||
853 | if (b->disposition == disp_del_at_next_stop) | |
854 | return; | |
855 | ||
856 | /* Save the current frame's ID so we can restore it after | |
857 | evaluating the watchpoint expression on its own frame. */ | |
858 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
859 | took a frame parameter, so that we didn't have to change the | |
860 | selected frame. */ | |
861 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
862 | ||
863 | /* Determine if the watchpoint is within scope. */ | |
864 | if (b->exp_valid_block == NULL) | |
865 | within_current_scope = 1; | |
866 | else | |
867 | { | |
868 | struct frame_info *fi; | |
869 | fi = frame_find_by_id (b->watchpoint_frame); | |
870 | within_current_scope = (fi != NULL); | |
871 | if (within_current_scope) | |
872 | select_frame (fi); | |
873 | } | |
874 | ||
875 | if (within_current_scope && reparse) | |
876 | { | |
877 | char *s; | |
878 | if (b->exp) | |
879 | { | |
880 | xfree (b->exp); | |
881 | b->exp = NULL; | |
882 | } | |
883 | s = b->exp_string; | |
884 | b->exp = parse_exp_1 (&s, b->exp_valid_block, 0); | |
885 | /* If the meaning of expression itself changed, the old value is | |
886 | no longer relevant. We don't want to report a watchpoint hit | |
887 | to the user when the old value and the new value may actually | |
888 | be completely different objects. */ | |
889 | value_free (b->val); | |
fa4727a6 DJ |
890 | b->val = NULL; |
891 | b->val_valid = 0; | |
a5606eee | 892 | } |
a5606eee VP |
893 | |
894 | /* If we failed to parse the expression, for example because | |
895 | it refers to a global variable in a not-yet-loaded shared library, | |
896 | don't try to insert watchpoint. We don't automatically delete | |
897 | such watchpoint, though, since failure to parse expression | |
898 | is different from out-of-scope watchpoint. */ | |
899 | if (within_current_scope && b->exp) | |
900 | { | |
fa4727a6 | 901 | struct value *val_chain, *v, *result, *next; |
a5606eee | 902 | |
fa4727a6 | 903 | fetch_watchpoint_value (b->exp, &v, &result, &val_chain); |
a5606eee | 904 | |
a5606eee VP |
905 | /* Avoid setting b->val if it's already set. The meaning of |
906 | b->val is 'the last value' user saw, and we should update | |
907 | it only if we reported that last value to user. As it | |
908 | happens, the code that reports it updates b->val directly. */ | |
fa4727a6 DJ |
909 | if (!b->val_valid) |
910 | { | |
911 | b->val = v; | |
912 | b->val_valid = 1; | |
913 | } | |
a5606eee | 914 | |
db2ad4c3 JK |
915 | /* Change the type of breakpoint between hardware assisted or an |
916 | ordinary watchpoint depending on the hardware support and free | |
917 | hardware slots. REPARSE is set when the inferior is started. */ | |
918 | if ((b->type == bp_watchpoint || b->type == bp_hardware_watchpoint) | |
919 | && reparse) | |
920 | { | |
ca2d49e8 | 921 | int i, mem_cnt, other_type_used; |
db2ad4c3 JK |
922 | |
923 | i = hw_watchpoint_used_count (bp_hardware_watchpoint, | |
924 | &other_type_used); | |
925 | mem_cnt = can_use_hardware_watchpoint (val_chain); | |
926 | ||
ca2d49e8 | 927 | if (!mem_cnt) |
db2ad4c3 JK |
928 | b->type = bp_watchpoint; |
929 | else | |
ca2d49e8 SL |
930 | { |
931 | int target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT | |
932 | (bp_hardware_watchpoint, i + mem_cnt, other_type_used); | |
933 | if (target_resources_ok <= 0) | |
934 | b->type = bp_watchpoint; | |
935 | else | |
936 | b->type = bp_hardware_watchpoint; | |
937 | } | |
db2ad4c3 JK |
938 | } |
939 | ||
a5606eee | 940 | /* Look at each value on the value chain. */ |
fa4727a6 | 941 | for (v = val_chain; v; v = next) |
a5606eee VP |
942 | { |
943 | /* If it's a memory location, and GDB actually needed | |
944 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
945 | must watch it. If the first value returned is |
946 | still lazy, that means an error occurred reading it; | |
947 | watch it anyway in case it becomes readable. */ | |
a5606eee | 948 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 949 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
950 | { |
951 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 952 | |
a5606eee VP |
953 | /* We only watch structs and arrays if user asked |
954 | for it explicitly, never if they just happen to | |
955 | appear in the middle of some value chain. */ | |
fa4727a6 | 956 | if (v == result |
a5606eee VP |
957 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
958 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
959 | { | |
960 | CORE_ADDR addr; | |
961 | int len, type; | |
962 | struct bp_location *loc, **tmp; | |
963 | ||
964 | addr = VALUE_ADDRESS (v) + value_offset (v); | |
965 | len = TYPE_LENGTH (value_type (v)); | |
966 | type = hw_write; | |
967 | if (b->type == bp_read_watchpoint) | |
968 | type = hw_read; | |
969 | else if (b->type == bp_access_watchpoint) | |
970 | type = hw_access; | |
971 | ||
39d61571 | 972 | loc = allocate_bp_location (b); |
a5606eee VP |
973 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
974 | ; | |
975 | *tmp = loc; | |
976 | loc->address = addr; | |
977 | loc->length = len; | |
978 | loc->watchpoint_type = type; | |
979 | } | |
980 | } | |
981 | ||
982 | next = value_next (v); | |
983 | if (v != b->val) | |
984 | value_free (v); | |
985 | } | |
986 | ||
2ec93238 MK |
987 | /* We just regenerated the list of breakpoint locations. |
988 | The new location does not have its condition field set to anything | |
989 | and therefore, we must always reparse the cond_string, independently | |
990 | of the value of the reparse flag. */ | |
991 | if (b->cond_string != NULL) | |
a5606eee VP |
992 | { |
993 | char *s = b->cond_string; | |
a5606eee VP |
994 | b->loc->cond = parse_exp_1 (&s, b->exp_valid_block, 0); |
995 | } | |
996 | } | |
997 | else if (!within_current_scope) | |
7270d8f2 | 998 | { |
a5606eee | 999 | printf_filtered (_("\ |
567e1b4e | 1000 | Watchpoint %d deleted because the program has left the block \n\ |
a5606eee VP |
1001 | in which its expression is valid.\n"), |
1002 | b->number); | |
1003 | if (b->related_breakpoint) | |
1004 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1005 | b->disposition = disp_del_at_next_stop; | |
7270d8f2 | 1006 | } |
a5606eee VP |
1007 | |
1008 | /* Restore the selected frame. */ | |
1009 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1010 | } |
1011 | ||
a5606eee | 1012 | |
74960c60 VP |
1013 | /* Returns 1 iff breakpoint location should be |
1014 | inserted in the inferior. */ | |
1015 | static int | |
1016 | should_be_inserted (struct bp_location *bpt) | |
1017 | { | |
1018 | if (!breakpoint_enabled (bpt->owner)) | |
1019 | return 0; | |
1020 | ||
1021 | if (bpt->owner->disposition == disp_del_at_next_stop) | |
1022 | return 0; | |
1023 | ||
1024 | if (!bpt->enabled || bpt->shlib_disabled || bpt->duplicate) | |
1025 | return 0; | |
1026 | ||
1027 | return 1; | |
1028 | } | |
1029 | ||
879bfdc2 DJ |
1030 | /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint. |
1031 | Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS, | |
fa3a767f | 1032 | and HW_BREAKPOINT_ERROR are used to report problems. |
879bfdc2 DJ |
1033 | |
1034 | NOTE drow/2003-09-09: This routine could be broken down to an object-style | |
1035 | method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 1036 | static int |
879bfdc2 | 1037 | insert_bp_location (struct bp_location *bpt, |
26bb91f3 | 1038 | struct ui_file *tmp_error_stream, |
fa3a767f | 1039 | int *disabled_breaks, |
26bb91f3 | 1040 | int *hw_breakpoint_error) |
879bfdc2 DJ |
1041 | { |
1042 | int val = 0; | |
1043 | ||
74960c60 | 1044 | if (!should_be_inserted (bpt) || bpt->inserted) |
879bfdc2 DJ |
1045 | return 0; |
1046 | ||
8181d85f DJ |
1047 | /* Initialize the target-specific information. */ |
1048 | memset (&bpt->target_info, 0, sizeof (bpt->target_info)); | |
1049 | bpt->target_info.placed_address = bpt->address; | |
1050 | ||
879bfdc2 DJ |
1051 | if (bpt->loc_type == bp_loc_software_breakpoint |
1052 | || bpt->loc_type == bp_loc_hardware_breakpoint) | |
1053 | { | |
765dc015 VP |
1054 | if (bpt->owner->type != bp_hardware_breakpoint) |
1055 | { | |
1056 | /* If the explicitly specified breakpoint type | |
1057 | is not hardware breakpoint, check the memory map to see | |
1058 | if the breakpoint address is in read only memory or not. | |
1059 | Two important cases are: | |
1060 | - location type is not hardware breakpoint, memory | |
1061 | is readonly. We change the type of the location to | |
1062 | hardware breakpoint. | |
1063 | - location type is hardware breakpoint, memory is read-write. | |
1064 | This means we've previously made the location hardware one, but | |
1065 | then the memory map changed, so we undo. | |
1066 | ||
1067 | When breakpoints are removed, remove_breakpoints will | |
1068 | use location types we've just set here, the only possible | |
1069 | problem is that memory map has changed during running program, | |
1070 | but it's not going to work anyway with current gdb. */ | |
1071 | struct mem_region *mr | |
1072 | = lookup_mem_region (bpt->target_info.placed_address); | |
1073 | ||
1074 | if (mr) | |
1075 | { | |
1076 | if (automatic_hardware_breakpoints) | |
1077 | { | |
1078 | int changed = 0; | |
1079 | enum bp_loc_type new_type; | |
1080 | ||
1081 | if (mr->attrib.mode != MEM_RW) | |
1082 | new_type = bp_loc_hardware_breakpoint; | |
1083 | else | |
1084 | new_type = bp_loc_software_breakpoint; | |
1085 | ||
1086 | if (new_type != bpt->loc_type) | |
1087 | { | |
1088 | static int said = 0; | |
1089 | bpt->loc_type = new_type; | |
1090 | if (!said) | |
1091 | { | |
1092 | fprintf_filtered (gdb_stdout, _("\ | |
0767c96d | 1093 | Note: automatically using hardware breakpoints for read-only addresses.\n")); |
765dc015 VP |
1094 | said = 1; |
1095 | } | |
1096 | } | |
1097 | } | |
1098 | else if (bpt->loc_type == bp_loc_software_breakpoint | |
1099 | && mr->attrib.mode != MEM_RW) | |
1100 | warning (_("cannot set software breakpoint at readonly address %s"), | |
1101 | paddr (bpt->address)); | |
1102 | } | |
1103 | } | |
1104 | ||
879bfdc2 DJ |
1105 | /* First check to see if we have to handle an overlay. */ |
1106 | if (overlay_debugging == ovly_off | |
1107 | || bpt->section == NULL | |
1108 | || !(section_is_overlay (bpt->section))) | |
1109 | { | |
1110 | /* No overlay handling: just set the breakpoint. */ | |
1111 | ||
1112 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8181d85f | 1113 | val = target_insert_hw_breakpoint (&bpt->target_info); |
879bfdc2 | 1114 | else |
8181d85f | 1115 | val = target_insert_breakpoint (&bpt->target_info); |
879bfdc2 DJ |
1116 | } |
1117 | else | |
1118 | { | |
1119 | /* This breakpoint is in an overlay section. | |
1120 | Shall we set a breakpoint at the LMA? */ | |
1121 | if (!overlay_events_enabled) | |
1122 | { | |
1123 | /* Yes -- overlay event support is not active, | |
1124 | so we must try to set a breakpoint at the LMA. | |
1125 | This will not work for a hardware breakpoint. */ | |
1126 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8a3fe4f8 | 1127 | warning (_("hardware breakpoint %d not supported in overlay!"), |
879bfdc2 DJ |
1128 | bpt->owner->number); |
1129 | else | |
1130 | { | |
1131 | CORE_ADDR addr = overlay_unmapped_address (bpt->address, | |
1132 | bpt->section); | |
1133 | /* Set a software (trap) breakpoint at the LMA. */ | |
8181d85f DJ |
1134 | bpt->overlay_target_info = bpt->target_info; |
1135 | bpt->overlay_target_info.placed_address = addr; | |
1136 | val = target_insert_breakpoint (&bpt->overlay_target_info); | |
879bfdc2 DJ |
1137 | if (val != 0) |
1138 | fprintf_unfiltered (tmp_error_stream, | |
1139 | "Overlay breakpoint %d failed: in ROM?", | |
1140 | bpt->owner->number); | |
1141 | } | |
1142 | } | |
1143 | /* Shall we set a breakpoint at the VMA? */ | |
1144 | if (section_is_mapped (bpt->section)) | |
1145 | { | |
1146 | /* Yes. This overlay section is mapped into memory. */ | |
1147 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8181d85f | 1148 | val = target_insert_hw_breakpoint (&bpt->target_info); |
879bfdc2 | 1149 | else |
8181d85f | 1150 | val = target_insert_breakpoint (&bpt->target_info); |
879bfdc2 DJ |
1151 | } |
1152 | else | |
1153 | { | |
1154 | /* No. This breakpoint will not be inserted. | |
1155 | No error, but do not mark the bp as 'inserted'. */ | |
1156 | return 0; | |
1157 | } | |
1158 | } | |
1159 | ||
1160 | if (val) | |
1161 | { | |
1162 | /* Can't set the breakpoint. */ | |
9bbf65bb | 1163 | if (solib_address (bpt->address)) |
879bfdc2 DJ |
1164 | { |
1165 | /* See also: disable_breakpoints_in_shlibs. */ | |
1166 | val = 0; | |
0d381245 | 1167 | bpt->shlib_disabled = 1; |
879bfdc2 DJ |
1168 | if (!*disabled_breaks) |
1169 | { | |
1170 | fprintf_unfiltered (tmp_error_stream, | |
1171 | "Cannot insert breakpoint %d.\n", | |
1172 | bpt->owner->number); | |
1173 | fprintf_unfiltered (tmp_error_stream, | |
1174 | "Temporarily disabling shared library breakpoints:\n"); | |
1175 | } | |
1176 | *disabled_breaks = 1; | |
1177 | fprintf_unfiltered (tmp_error_stream, | |
1178 | "breakpoint #%d\n", bpt->owner->number); | |
1179 | } | |
1180 | else | |
879bfdc2 | 1181 | { |
879bfdc2 DJ |
1182 | if (bpt->loc_type == bp_loc_hardware_breakpoint) |
1183 | { | |
1184 | *hw_breakpoint_error = 1; | |
1185 | fprintf_unfiltered (tmp_error_stream, | |
1186 | "Cannot insert hardware breakpoint %d.\n", | |
1187 | bpt->owner->number); | |
1188 | } | |
1189 | else | |
1190 | { | |
1191 | fprintf_unfiltered (tmp_error_stream, | |
1192 | "Cannot insert breakpoint %d.\n", | |
1193 | bpt->owner->number); | |
1194 | fprintf_filtered (tmp_error_stream, | |
1195 | "Error accessing memory address "); | |
ed49a04f | 1196 | fputs_filtered (paddress (bpt->address), tmp_error_stream); |
879bfdc2 DJ |
1197 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1198 | safe_strerror (val)); | |
1199 | } | |
1200 | ||
1201 | } | |
1202 | } | |
1203 | else | |
1204 | bpt->inserted = 1; | |
1205 | ||
1206 | return val; | |
1207 | } | |
1208 | ||
1209 | else if (bpt->loc_type == bp_loc_hardware_watchpoint | |
1210 | /* NOTE drow/2003-09-08: This state only exists for removing | |
1211 | watchpoints. It's not clear that it's necessary... */ | |
1212 | && bpt->owner->disposition != disp_del_at_next_stop) | |
1213 | { | |
a5606eee VP |
1214 | val = target_insert_watchpoint (bpt->address, |
1215 | bpt->length, | |
1216 | bpt->watchpoint_type); | |
1217 | bpt->inserted = (val != -1); | |
879bfdc2 DJ |
1218 | } |
1219 | ||
fe798b75 | 1220 | else if (bpt->owner->type == bp_catchpoint) |
879bfdc2 | 1221 | { |
71fff37b AC |
1222 | struct gdb_exception e = catch_exception (uiout, insert_catchpoint, |
1223 | bpt->owner, RETURN_MASK_ERROR); | |
9cbc821d AC |
1224 | exception_fprintf (gdb_stderr, e, "warning: inserting catchpoint %d: ", |
1225 | bpt->owner->number); | |
1226 | if (e.reason < 0) | |
879bfdc2 DJ |
1227 | bpt->owner->enable_state = bp_disabled; |
1228 | else | |
1229 | bpt->inserted = 1; | |
1640b821 DJ |
1230 | |
1231 | /* We've already printed an error message if there was a problem | |
1232 | inserting this catchpoint, and we've disabled the catchpoint, | |
1233 | so just return success. */ | |
1234 | return 0; | |
879bfdc2 DJ |
1235 | } |
1236 | ||
1237 | return 0; | |
1238 | } | |
1239 | ||
74960c60 VP |
1240 | /* Make sure all breakpoints are inserted in inferior. |
1241 | Throws exception on any error. | |
1242 | A breakpoint that is already inserted won't be inserted | |
1243 | again, so calling this function twice is safe. */ | |
1244 | void | |
1245 | insert_breakpoints (void) | |
1246 | { | |
1247 | struct breakpoint *bpt; | |
1248 | ||
1249 | ALL_BREAKPOINTS (bpt) | |
1250 | if (is_hardware_watchpoint (bpt)) | |
1251 | update_watchpoint (bpt, 0 /* don't reparse. */); | |
1252 | ||
b60e7edf | 1253 | update_global_location_list (1); |
74960c60 | 1254 | |
50c71eaf PA |
1255 | if (!breakpoints_always_inserted_mode () |
1256 | && (target_has_execution | |
1257 | || (gdbarch_has_global_solist (target_gdbarch) | |
1258 | && target_supports_multi_process ()))) | |
74960c60 VP |
1259 | /* update_global_location_list does not insert breakpoints |
1260 | when always_inserted_mode is not enabled. Explicitly | |
1261 | insert them now. */ | |
1262 | insert_breakpoint_locations (); | |
1263 | } | |
1264 | ||
c906108c SS |
1265 | /* insert_breakpoints is used when starting or continuing the program. |
1266 | remove_breakpoints is used when the program stops. | |
1267 | Both return zero if successful, | |
1268 | or an `errno' value if could not write the inferior. */ | |
1269 | ||
74960c60 VP |
1270 | static void |
1271 | insert_breakpoint_locations (void) | |
c906108c | 1272 | { |
a5606eee | 1273 | struct breakpoint *bpt; |
879bfdc2 | 1274 | struct bp_location *b, *temp; |
e236ba44 | 1275 | int error = 0; |
c906108c SS |
1276 | int val = 0; |
1277 | int disabled_breaks = 0; | |
81d0cc19 | 1278 | int hw_breakpoint_error = 0; |
c906108c | 1279 | |
81d0cc19 GS |
1280 | struct ui_file *tmp_error_stream = mem_fileopen (); |
1281 | make_cleanup_ui_file_delete (tmp_error_stream); | |
74960c60 | 1282 | |
81d0cc19 GS |
1283 | /* Explicitly mark the warning -- this will only be printed if |
1284 | there was an error. */ | |
1285 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
a5606eee | 1286 | |
879bfdc2 DJ |
1287 | ALL_BP_LOCATIONS_SAFE (b, temp) |
1288 | { | |
74960c60 | 1289 | if (!should_be_inserted (b) || b->inserted) |
879bfdc2 DJ |
1290 | continue; |
1291 | ||
f365de73 AS |
1292 | /* There is no point inserting thread-specific breakpoints if the |
1293 | thread no longer exists. */ | |
1294 | if (b->owner->thread != -1 | |
1295 | && !valid_thread_id (b->owner->thread)) | |
1296 | continue; | |
1297 | ||
879bfdc2 | 1298 | val = insert_bp_location (b, tmp_error_stream, |
fa3a767f | 1299 | &disabled_breaks, |
879bfdc2 DJ |
1300 | &hw_breakpoint_error); |
1301 | if (val) | |
e236ba44 | 1302 | error = val; |
879bfdc2 | 1303 | } |
c906108c | 1304 | |
a5606eee VP |
1305 | /* If we failed to insert all locations of a watchpoint, |
1306 | remove them, as half-inserted watchpoint is of limited use. */ | |
1307 | ALL_BREAKPOINTS (bpt) | |
1308 | { | |
1309 | int some_failed = 0; | |
1310 | struct bp_location *loc; | |
1311 | ||
1312 | if (!is_hardware_watchpoint (bpt)) | |
1313 | continue; | |
1314 | ||
d6b74ac4 | 1315 | if (!breakpoint_enabled (bpt)) |
a5606eee | 1316 | continue; |
74960c60 VP |
1317 | |
1318 | if (bpt->disposition == disp_del_at_next_stop) | |
1319 | continue; | |
a5606eee VP |
1320 | |
1321 | for (loc = bpt->loc; loc; loc = loc->next) | |
1322 | if (!loc->inserted) | |
1323 | { | |
1324 | some_failed = 1; | |
1325 | break; | |
1326 | } | |
1327 | if (some_failed) | |
1328 | { | |
1329 | for (loc = bpt->loc; loc; loc = loc->next) | |
1330 | if (loc->inserted) | |
1331 | remove_breakpoint (loc, mark_uninserted); | |
1332 | ||
1333 | hw_breakpoint_error = 1; | |
1334 | fprintf_unfiltered (tmp_error_stream, | |
1335 | "Could not insert hardware watchpoint %d.\n", | |
1336 | bpt->number); | |
1337 | error = -1; | |
1338 | } | |
1339 | } | |
1340 | ||
e236ba44 | 1341 | if (error) |
81d0cc19 GS |
1342 | { |
1343 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1344 | message about possibly exhausted resources. */ | |
879bfdc2 | 1345 | if (hw_breakpoint_error) |
81d0cc19 | 1346 | { |
c6510018 MS |
1347 | fprintf_unfiltered (tmp_error_stream, |
1348 | "Could not insert hardware breakpoints:\n\ | |
1349 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1350 | } |
81d0cc19 GS |
1351 | target_terminal_ours_for_output (); |
1352 | error_stream (tmp_error_stream); | |
1353 | } | |
c906108c SS |
1354 | } |
1355 | ||
c906108c | 1356 | int |
fba45db2 | 1357 | remove_breakpoints (void) |
c906108c | 1358 | { |
0bde7532 | 1359 | struct bp_location *b; |
c906108c SS |
1360 | int val; |
1361 | ||
0bde7532 | 1362 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1363 | { |
0bde7532 | 1364 | if (b->inserted) |
c5aa993b JM |
1365 | { |
1366 | val = remove_breakpoint (b, mark_uninserted); | |
1367 | if (val != 0) | |
1368 | return val; | |
1369 | } | |
1370 | } | |
c906108c SS |
1371 | return 0; |
1372 | } | |
1373 | ||
692590c1 | 1374 | int |
80ce1ecb | 1375 | remove_hw_watchpoints (void) |
692590c1 | 1376 | { |
0bde7532 | 1377 | struct bp_location *b; |
692590c1 MS |
1378 | int val; |
1379 | ||
0bde7532 | 1380 | ALL_BP_LOCATIONS (b) |
692590c1 | 1381 | { |
0bde7532 | 1382 | if (b->inserted && b->loc_type == bp_loc_hardware_watchpoint) |
692590c1 MS |
1383 | { |
1384 | val = remove_breakpoint (b, mark_uninserted); | |
1385 | if (val != 0) | |
1386 | return val; | |
1387 | } | |
1388 | } | |
1389 | return 0; | |
1390 | } | |
1391 | ||
c906108c | 1392 | int |
fba45db2 | 1393 | reattach_breakpoints (int pid) |
c906108c | 1394 | { |
0bde7532 | 1395 | struct bp_location *b; |
c906108c | 1396 | int val; |
ce696e05 | 1397 | struct cleanup *old_chain = save_inferior_ptid (); |
a4954f26 | 1398 | struct ui_file *tmp_error_stream = mem_fileopen (); |
fa3a767f | 1399 | int dummy1 = 0, dummy2 = 0; |
a4954f26 DJ |
1400 | |
1401 | make_cleanup_ui_file_delete (tmp_error_stream); | |
c906108c | 1402 | |
ce696e05 | 1403 | inferior_ptid = pid_to_ptid (pid); |
0bde7532 | 1404 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1405 | { |
0bde7532 | 1406 | if (b->inserted) |
c5aa993b | 1407 | { |
a4954f26 DJ |
1408 | b->inserted = 0; |
1409 | val = insert_bp_location (b, tmp_error_stream, | |
fa3a767f | 1410 | &dummy1, &dummy2); |
c5aa993b JM |
1411 | if (val != 0) |
1412 | { | |
ce696e05 | 1413 | do_cleanups (old_chain); |
c5aa993b JM |
1414 | return val; |
1415 | } | |
1416 | } | |
1417 | } | |
ce696e05 | 1418 | do_cleanups (old_chain); |
c906108c SS |
1419 | return 0; |
1420 | } | |
1421 | ||
1422 | void | |
fba45db2 | 1423 | update_breakpoints_after_exec (void) |
c906108c | 1424 | { |
c5aa993b JM |
1425 | struct breakpoint *b; |
1426 | struct breakpoint *temp; | |
25b22b0a | 1427 | struct bp_location *bploc; |
c906108c | 1428 | |
25b22b0a PA |
1429 | /* We're about to delete breakpoints from GDB's lists. If the |
1430 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
1431 | writing the breakpoints' "shadow contents" back into memory. The | |
1432 | "shadow contents" are NOT valid after an exec, so GDB should not | |
1433 | do that. Instead, the target is responsible from marking | |
1434 | breakpoints out as soon as it detects an exec. We don't do that | |
1435 | here instead, because there may be other attempts to delete | |
1436 | breakpoints after detecting an exec and before reaching here. */ | |
1437 | ALL_BP_LOCATIONS (bploc) | |
1438 | gdb_assert (!bploc->inserted); | |
c906108c SS |
1439 | |
1440 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1441 | { |
1442 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
1443 | if (b->type == bp_shlib_event) | |
1444 | { | |
1445 | delete_breakpoint (b); | |
1446 | continue; | |
1447 | } | |
c906108c | 1448 | |
1900040c MS |
1449 | /* Thread event breakpoints must be set anew after an exec(), |
1450 | as must overlay event breakpoints. */ | |
1451 | if (b->type == bp_thread_event || b->type == bp_overlay_event) | |
c4093a6a JM |
1452 | { |
1453 | delete_breakpoint (b); | |
1454 | continue; | |
1455 | } | |
1456 | ||
c5aa993b JM |
1457 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1458 | if (b->type == bp_step_resume) | |
1459 | { | |
1460 | delete_breakpoint (b); | |
1461 | continue; | |
1462 | } | |
1463 | ||
611c83ae PA |
1464 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
1465 | after an exec. */ | |
1466 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume) | |
1467 | { | |
1468 | delete_breakpoint (b); | |
1469 | continue; | |
1470 | } | |
1471 | ||
ce78b96d JB |
1472 | if (b->type == bp_catchpoint) |
1473 | { | |
1474 | /* For now, none of the bp_catchpoint breakpoints need to | |
1475 | do anything at this point. In the future, if some of | |
1476 | the catchpoints need to something, we will need to add | |
1477 | a new method, and call this method from here. */ | |
1478 | continue; | |
1479 | } | |
1480 | ||
c5aa993b JM |
1481 | /* bp_finish is a special case. The only way we ought to be able |
1482 | to see one of these when an exec() has happened, is if the user | |
1483 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1484 | carries them to the call-site of the current callee, by setting | |
1485 | a temporary bp there and resuming. But in this case, the finish | |
1486 | will carry them entirely through the vfork & exec. | |
1487 | ||
1488 | We don't want to allow a bp_finish to remain inserted now. But | |
1489 | we can't safely delete it, 'cause finish_command has a handle to | |
1490 | the bp on a bpstat, and will later want to delete it. There's a | |
1491 | chance (and I've seen it happen) that if we delete the bp_finish | |
1492 | here, that its storage will get reused by the time finish_command | |
1493 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1494 | We really must allow finish_command to delete a bp_finish. | |
1495 | ||
53a5351d JM |
1496 | In the absense of a general solution for the "how do we know |
1497 | it's safe to delete something others may have handles to?" | |
1498 | problem, what we'll do here is just uninsert the bp_finish, and | |
1499 | let finish_command delete it. | |
1500 | ||
1501 | (We know the bp_finish is "doomed" in the sense that it's | |
1502 | momentary, and will be deleted as soon as finish_command sees | |
1503 | the inferior stopped. So it doesn't matter that the bp's | |
1504 | address is probably bogus in the new a.out, unlike e.g., the | |
1505 | solib breakpoints.) */ | |
c5aa993b | 1506 | |
c5aa993b JM |
1507 | if (b->type == bp_finish) |
1508 | { | |
1509 | continue; | |
1510 | } | |
1511 | ||
1512 | /* Without a symbolic address, we have little hope of the | |
1513 | pre-exec() address meaning the same thing in the post-exec() | |
1514 | a.out. */ | |
1515 | if (b->addr_string == NULL) | |
1516 | { | |
1517 | delete_breakpoint (b); | |
1518 | continue; | |
1519 | } | |
c5aa993b | 1520 | } |
1900040c MS |
1521 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
1522 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
1523 | } |
1524 | ||
1525 | int | |
fba45db2 | 1526 | detach_breakpoints (int pid) |
c906108c | 1527 | { |
0bde7532 | 1528 | struct bp_location *b; |
c906108c | 1529 | int val; |
ce696e05 | 1530 | struct cleanup *old_chain = save_inferior_ptid (); |
c5aa993b | 1531 | |
39f77062 | 1532 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 1533 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 1534 | |
ce696e05 KB |
1535 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1536 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1537 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1538 | { |
0bde7532 | 1539 | if (b->inserted) |
c5aa993b JM |
1540 | { |
1541 | val = remove_breakpoint (b, mark_inserted); | |
1542 | if (val != 0) | |
1543 | { | |
ce696e05 | 1544 | do_cleanups (old_chain); |
c5aa993b JM |
1545 | return val; |
1546 | } | |
1547 | } | |
1548 | } | |
ce696e05 | 1549 | do_cleanups (old_chain); |
c906108c SS |
1550 | return 0; |
1551 | } | |
1552 | ||
1553 | static int | |
0bde7532 | 1554 | remove_breakpoint (struct bp_location *b, insertion_state_t is) |
c906108c SS |
1555 | { |
1556 | int val; | |
c5aa993b | 1557 | |
0bde7532 | 1558 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
1559 | /* Permanent breakpoints cannot be inserted or removed. */ |
1560 | return 0; | |
1561 | ||
74960c60 VP |
1562 | /* The type of none suggests that owner is actually deleted. |
1563 | This should not ever happen. */ | |
1564 | gdb_assert (b->owner->type != bp_none); | |
0bde7532 DJ |
1565 | |
1566 | if (b->loc_type == bp_loc_software_breakpoint | |
1567 | || b->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 1568 | { |
c02f5703 MS |
1569 | /* "Normal" instruction breakpoint: either the standard |
1570 | trap-instruction bp (bp_breakpoint), or a | |
1571 | bp_hardware_breakpoint. */ | |
1572 | ||
1573 | /* First check to see if we have to handle an overlay. */ | |
1574 | if (overlay_debugging == ovly_off | |
0bde7532 DJ |
1575 | || b->section == NULL |
1576 | || !(section_is_overlay (b->section))) | |
c02f5703 MS |
1577 | { |
1578 | /* No overlay handling: just remove the breakpoint. */ | |
1579 | ||
0bde7532 | 1580 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1581 | val = target_remove_hw_breakpoint (&b->target_info); |
c02f5703 | 1582 | else |
8181d85f | 1583 | val = target_remove_breakpoint (&b->target_info); |
c02f5703 | 1584 | } |
c906108c SS |
1585 | else |
1586 | { | |
c02f5703 MS |
1587 | /* This breakpoint is in an overlay section. |
1588 | Did we set a breakpoint at the LMA? */ | |
1589 | if (!overlay_events_enabled) | |
1590 | { | |
1591 | /* Yes -- overlay event support is not active, so we | |
1592 | should have set a breakpoint at the LMA. Remove it. | |
1593 | */ | |
c02f5703 MS |
1594 | /* Ignore any failures: if the LMA is in ROM, we will |
1595 | have already warned when we failed to insert it. */ | |
0bde7532 | 1596 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1597 | target_remove_hw_breakpoint (&b->overlay_target_info); |
c02f5703 | 1598 | else |
8181d85f | 1599 | target_remove_breakpoint (&b->overlay_target_info); |
c02f5703 MS |
1600 | } |
1601 | /* Did we set a breakpoint at the VMA? | |
1602 | If so, we will have marked the breakpoint 'inserted'. */ | |
0bde7532 | 1603 | if (b->inserted) |
c906108c | 1604 | { |
c02f5703 MS |
1605 | /* Yes -- remove it. Previously we did not bother to |
1606 | remove the breakpoint if the section had been | |
1607 | unmapped, but let's not rely on that being safe. We | |
1608 | don't know what the overlay manager might do. */ | |
0bde7532 | 1609 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1610 | val = target_remove_hw_breakpoint (&b->target_info); |
aa67235e UW |
1611 | |
1612 | /* However, we should remove *software* breakpoints only | |
1613 | if the section is still mapped, or else we overwrite | |
1614 | wrong code with the saved shadow contents. */ | |
1615 | else if (section_is_mapped (b->section)) | |
8181d85f | 1616 | val = target_remove_breakpoint (&b->target_info); |
aa67235e UW |
1617 | else |
1618 | val = 0; | |
c906108c | 1619 | } |
c02f5703 MS |
1620 | else |
1621 | { | |
1622 | /* No -- not inserted, so no need to remove. No error. */ | |
1623 | val = 0; | |
1624 | } | |
c906108c | 1625 | } |
879d1e6b UW |
1626 | |
1627 | /* In some cases, we might not be able to remove a breakpoint | |
1628 | in a shared library that has already been removed, but we | |
1629 | have not yet processed the shlib unload event. */ | |
1630 | if (val && solib_address (b->address)) | |
1631 | val = 0; | |
1632 | ||
c906108c SS |
1633 | if (val) |
1634 | return val; | |
0bde7532 | 1635 | b->inserted = (is == mark_inserted); |
c906108c | 1636 | } |
a5606eee | 1637 | else if (b->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 1638 | { |
278cd55f AC |
1639 | struct value *v; |
1640 | struct value *n; | |
c5aa993b | 1641 | |
0bde7532 | 1642 | b->inserted = (is == mark_inserted); |
a5606eee VP |
1643 | val = target_remove_watchpoint (b->address, b->length, |
1644 | b->watchpoint_type); | |
2e70b7b9 | 1645 | |
c906108c | 1646 | /* Failure to remove any of the hardware watchpoints comes here. */ |
0bde7532 | 1647 | if ((is == mark_uninserted) && (b->inserted)) |
8a3fe4f8 | 1648 | warning (_("Could not remove hardware watchpoint %d."), |
0bde7532 | 1649 | b->owner->number); |
c906108c | 1650 | } |
ce78b96d JB |
1651 | else if (b->owner->type == bp_catchpoint |
1652 | && breakpoint_enabled (b->owner) | |
1653 | && !b->duplicate) | |
1654 | { | |
1655 | gdb_assert (b->owner->ops != NULL && b->owner->ops->remove != NULL); | |
1656 | ||
1657 | val = b->owner->ops->remove (b->owner); | |
1658 | if (val) | |
1659 | return val; | |
1660 | b->inserted = (is == mark_inserted); | |
1661 | } | |
c906108c SS |
1662 | |
1663 | return 0; | |
1664 | } | |
1665 | ||
1666 | /* Clear the "inserted" flag in all breakpoints. */ | |
1667 | ||
25b22b0a | 1668 | void |
fba45db2 | 1669 | mark_breakpoints_out (void) |
c906108c | 1670 | { |
075f6582 | 1671 | struct bp_location *bpt; |
c906108c | 1672 | |
075f6582 DJ |
1673 | ALL_BP_LOCATIONS (bpt) |
1674 | bpt->inserted = 0; | |
c906108c SS |
1675 | } |
1676 | ||
53a5351d JM |
1677 | /* Clear the "inserted" flag in all breakpoints and delete any |
1678 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1679 | |
1680 | Plus other such housekeeping that has to be done for breakpoints | |
1681 | between runs. | |
1682 | ||
53a5351d JM |
1683 | Note: this function gets called at the end of a run (by |
1684 | generic_mourn_inferior) and when a run begins (by | |
1685 | init_wait_for_inferior). */ | |
c906108c SS |
1686 | |
1687 | ||
1688 | ||
1689 | void | |
fba45db2 | 1690 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 1691 | { |
52f0bd74 | 1692 | struct breakpoint *b, *temp; |
075f6582 | 1693 | struct bp_location *bpt; |
1c5cfe86 | 1694 | int ix; |
c906108c | 1695 | |
50c71eaf PA |
1696 | /* If breakpoint locations are shared across processes, then there's |
1697 | nothing to do. */ | |
1698 | if (gdbarch_has_global_solist (target_gdbarch)) | |
1699 | return; | |
1700 | ||
075f6582 | 1701 | ALL_BP_LOCATIONS (bpt) |
514f746b AR |
1702 | if (bpt->owner->enable_state != bp_permanent) |
1703 | bpt->inserted = 0; | |
075f6582 | 1704 | |
c906108c | 1705 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 1706 | { |
c5aa993b JM |
1707 | switch (b->type) |
1708 | { | |
1709 | case bp_call_dummy: | |
1710 | case bp_watchpoint_scope: | |
c906108c | 1711 | |
c5aa993b JM |
1712 | /* If the call dummy breakpoint is at the entry point it will |
1713 | cause problems when the inferior is rerun, so we better | |
1714 | get rid of it. | |
c906108c | 1715 | |
c5aa993b JM |
1716 | Also get rid of scope breakpoints. */ |
1717 | delete_breakpoint (b); | |
1718 | break; | |
c906108c | 1719 | |
c5aa993b JM |
1720 | case bp_watchpoint: |
1721 | case bp_hardware_watchpoint: | |
1722 | case bp_read_watchpoint: | |
1723 | case bp_access_watchpoint: | |
c906108c | 1724 | |
c5aa993b JM |
1725 | /* Likewise for watchpoints on local expressions. */ |
1726 | if (b->exp_valid_block != NULL) | |
1727 | delete_breakpoint (b); | |
967af18d | 1728 | else if (context == inf_starting) |
c860120c PM |
1729 | { |
1730 | /* Reset val field to force reread of starting value | |
1731 | in insert_breakpoints. */ | |
1732 | if (b->val) | |
1733 | value_free (b->val); | |
1734 | b->val = NULL; | |
fa4727a6 | 1735 | b->val_valid = 0; |
c860120c | 1736 | } |
c5aa993b JM |
1737 | break; |
1738 | default: | |
c5aa993b JM |
1739 | break; |
1740 | } | |
1741 | } | |
1c5cfe86 PA |
1742 | |
1743 | /* Get rid of the moribund locations. */ | |
1744 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bpt); ++ix) | |
1745 | free_bp_location (bpt); | |
1746 | VEC_free (bp_location_p, moribund_locations); | |
c906108c SS |
1747 | } |
1748 | ||
c2c6d25f JM |
1749 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1750 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1751 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1752 | permanent breakpoint. | |
1753 | - When continuing from a location with an ordinary breakpoint, we | |
1754 | actually single step once before calling insert_breakpoints. | |
1755 | - When continuing from a localion with a permanent breakpoint, we | |
1756 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1757 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1758 | |
c2c6d25f | 1759 | enum breakpoint_here |
fba45db2 | 1760 | breakpoint_here_p (CORE_ADDR pc) |
c906108c | 1761 | { |
89f9893c | 1762 | const struct bp_location *bpt; |
c2c6d25f | 1763 | int any_breakpoint_here = 0; |
c906108c | 1764 | |
075f6582 DJ |
1765 | ALL_BP_LOCATIONS (bpt) |
1766 | { | |
1767 | if (bpt->loc_type != bp_loc_software_breakpoint | |
1768 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1769 | continue; | |
1770 | ||
468d015d | 1771 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1772 | || bpt->owner->enable_state == bp_permanent) |
1773 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1774 | { | |
1775 | if (overlay_debugging | |
1776 | && section_is_overlay (bpt->section) | |
1777 | && !section_is_mapped (bpt->section)) | |
1778 | continue; /* unmapped overlay -- can't be a match */ | |
1779 | else if (bpt->owner->enable_state == bp_permanent) | |
1780 | return permanent_breakpoint_here; | |
1781 | else | |
1782 | any_breakpoint_here = 1; | |
1783 | } | |
1784 | } | |
c906108c | 1785 | |
c2c6d25f | 1786 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1787 | } |
1788 | ||
1c5cfe86 PA |
1789 | /* Return true if there's a moribund breakpoint at PC. */ |
1790 | ||
1791 | int | |
1792 | moribund_breakpoint_here_p (CORE_ADDR pc) | |
1793 | { | |
1794 | struct bp_location *loc; | |
1795 | int ix; | |
1796 | ||
1797 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
1798 | if (loc->address == pc) | |
1799 | return 1; | |
1800 | ||
1801 | return 0; | |
1802 | } | |
c2c6d25f | 1803 | |
c36b740a VP |
1804 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
1805 | inserted using regular breakpoint_chain/bp_location_chain mechanism. | |
1806 | This does not check for single-step breakpoints, which are | |
1807 | inserted and removed using direct target manipulation. */ | |
c906108c SS |
1808 | |
1809 | int | |
c36b740a | 1810 | regular_breakpoint_inserted_here_p (CORE_ADDR pc) |
c906108c | 1811 | { |
89f9893c | 1812 | const struct bp_location *bpt; |
c906108c | 1813 | |
075f6582 | 1814 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1815 | { |
075f6582 DJ |
1816 | if (bpt->loc_type != bp_loc_software_breakpoint |
1817 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1818 | continue; | |
1819 | ||
1820 | if (bpt->inserted | |
1821 | && bpt->address == pc) /* bp is inserted and matches pc */ | |
1822 | { | |
1823 | if (overlay_debugging | |
1824 | && section_is_overlay (bpt->section) | |
1825 | && !section_is_mapped (bpt->section)) | |
1826 | continue; /* unmapped overlay -- can't be a match */ | |
1827 | else | |
1828 | return 1; | |
1829 | } | |
c5aa993b | 1830 | } |
c36b740a VP |
1831 | return 0; |
1832 | } | |
1833 | ||
1834 | /* Returns non-zero iff there's either regular breakpoint | |
1835 | or a single step breakpoint inserted at PC. */ | |
1836 | ||
1837 | int | |
1838 | breakpoint_inserted_here_p (CORE_ADDR pc) | |
1839 | { | |
1840 | if (regular_breakpoint_inserted_here_p (pc)) | |
1841 | return 1; | |
c906108c | 1842 | |
1aafd4da UW |
1843 | if (single_step_breakpoint_inserted_here_p (pc)) |
1844 | return 1; | |
1845 | ||
c906108c SS |
1846 | return 0; |
1847 | } | |
1848 | ||
4fa8626c DJ |
1849 | /* This function returns non-zero iff there is a software breakpoint |
1850 | inserted at PC. */ | |
1851 | ||
1852 | int | |
1853 | software_breakpoint_inserted_here_p (CORE_ADDR pc) | |
1854 | { | |
89f9893c | 1855 | const struct bp_location *bpt; |
4fa8626c DJ |
1856 | int any_breakpoint_here = 0; |
1857 | ||
1858 | ALL_BP_LOCATIONS (bpt) | |
1859 | { | |
1860 | if (bpt->loc_type != bp_loc_software_breakpoint) | |
1861 | continue; | |
1862 | ||
0d381245 | 1863 | if (bpt->inserted |
4fa8626c DJ |
1864 | && bpt->address == pc) /* bp is enabled and matches pc */ |
1865 | { | |
1866 | if (overlay_debugging | |
1867 | && section_is_overlay (bpt->section) | |
1868 | && !section_is_mapped (bpt->section)) | |
1869 | continue; /* unmapped overlay -- can't be a match */ | |
1870 | else | |
1871 | return 1; | |
1872 | } | |
1873 | } | |
1874 | ||
1aafd4da UW |
1875 | /* Also check for software single-step breakpoints. */ |
1876 | if (single_step_breakpoint_inserted_here_p (pc)) | |
1877 | return 1; | |
1878 | ||
4fa8626c DJ |
1879 | return 0; |
1880 | } | |
1881 | ||
075f6582 DJ |
1882 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
1883 | PC is valid for process/thread PTID. */ | |
c906108c SS |
1884 | |
1885 | int | |
39f77062 | 1886 | breakpoint_thread_match (CORE_ADDR pc, ptid_t ptid) |
c906108c | 1887 | { |
89f9893c | 1888 | const struct bp_location *bpt; |
c906108c SS |
1889 | int thread; |
1890 | ||
39f77062 | 1891 | thread = pid_to_thread_id (ptid); |
c906108c | 1892 | |
075f6582 | 1893 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1894 | { |
075f6582 DJ |
1895 | if (bpt->loc_type != bp_loc_software_breakpoint |
1896 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1897 | continue; | |
1898 | ||
468d015d | 1899 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1900 | || bpt->owner->enable_state == bp_permanent) |
1901 | && bpt->address == pc | |
1902 | && (bpt->owner->thread == -1 || bpt->owner->thread == thread)) | |
1903 | { | |
1904 | if (overlay_debugging | |
1905 | && section_is_overlay (bpt->section) | |
1906 | && !section_is_mapped (bpt->section)) | |
1907 | continue; /* unmapped overlay -- can't be a match */ | |
1908 | else | |
1909 | return 1; | |
1910 | } | |
c5aa993b | 1911 | } |
c906108c SS |
1912 | |
1913 | return 0; | |
1914 | } | |
c906108c | 1915 | \f |
c5aa993b | 1916 | |
c906108c SS |
1917 | /* bpstat stuff. External routines' interfaces are documented |
1918 | in breakpoint.h. */ | |
1919 | ||
1920 | int | |
fba45db2 | 1921 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c | 1922 | { |
533be4dd | 1923 | return (ep->type == bp_catchpoint); |
c906108c SS |
1924 | } |
1925 | ||
198757a8 VP |
1926 | void |
1927 | bpstat_free (bpstat bs) | |
1928 | { | |
1929 | if (bs->old_val != NULL) | |
1930 | value_free (bs->old_val); | |
1931 | free_command_lines (&bs->commands); | |
1932 | xfree (bs); | |
1933 | } | |
1934 | ||
c906108c SS |
1935 | /* Clear a bpstat so that it says we are not at any breakpoint. |
1936 | Also free any storage that is part of a bpstat. */ | |
1937 | ||
1938 | void | |
fba45db2 | 1939 | bpstat_clear (bpstat *bsp) |
c906108c SS |
1940 | { |
1941 | bpstat p; | |
1942 | bpstat q; | |
1943 | ||
1944 | if (bsp == 0) | |
1945 | return; | |
1946 | p = *bsp; | |
1947 | while (p != NULL) | |
1948 | { | |
1949 | q = p->next; | |
198757a8 | 1950 | bpstat_free (p); |
c906108c SS |
1951 | p = q; |
1952 | } | |
1953 | *bsp = NULL; | |
1954 | } | |
1955 | ||
1956 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
1957 | is part of the bpstat is copied as well. */ | |
1958 | ||
1959 | bpstat | |
fba45db2 | 1960 | bpstat_copy (bpstat bs) |
c906108c SS |
1961 | { |
1962 | bpstat p = NULL; | |
1963 | bpstat tmp; | |
1964 | bpstat retval = NULL; | |
1965 | ||
1966 | if (bs == NULL) | |
1967 | return bs; | |
1968 | ||
1969 | for (; bs != NULL; bs = bs->next) | |
1970 | { | |
1971 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
1972 | memcpy (tmp, bs, sizeof (*tmp)); | |
31cc81e9 DJ |
1973 | if (bs->commands != NULL) |
1974 | tmp->commands = copy_command_lines (bs->commands); | |
1975 | if (bs->old_val != NULL) | |
3c3185ac JK |
1976 | { |
1977 | tmp->old_val = value_copy (bs->old_val); | |
1978 | release_value (tmp->old_val); | |
1979 | } | |
31cc81e9 | 1980 | |
c906108c SS |
1981 | if (p == NULL) |
1982 | /* This is the first thing in the chain. */ | |
1983 | retval = tmp; | |
1984 | else | |
1985 | p->next = tmp; | |
1986 | p = tmp; | |
1987 | } | |
1988 | p->next = NULL; | |
1989 | return retval; | |
1990 | } | |
1991 | ||
1992 | /* Find the bpstat associated with this breakpoint */ | |
1993 | ||
1994 | bpstat | |
fba45db2 | 1995 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 1996 | { |
c5aa993b JM |
1997 | if (bsp == NULL) |
1998 | return NULL; | |
c906108c | 1999 | |
c5aa993b JM |
2000 | for (; bsp != NULL; bsp = bsp->next) |
2001 | { | |
4f8d1dc6 | 2002 | if (bsp->breakpoint_at && bsp->breakpoint_at->owner == breakpoint) |
c5aa993b JM |
2003 | return bsp; |
2004 | } | |
c906108c SS |
2005 | return NULL; |
2006 | } | |
2007 | ||
2008 | /* Find a step_resume breakpoint associated with this bpstat. | |
2009 | (If there are multiple step_resume bp's on the list, this function | |
2010 | will arbitrarily pick one.) | |
2011 | ||
2012 | It is an error to use this function if BPSTAT doesn't contain a | |
2013 | step_resume breakpoint. | |
2014 | ||
2015 | See wait_for_inferior's use of this function. */ | |
2016 | struct breakpoint * | |
fba45db2 | 2017 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c | 2018 | { |
8601f500 MS |
2019 | int current_thread; |
2020 | ||
8a3fe4f8 | 2021 | gdb_assert (bsp != NULL); |
c906108c | 2022 | |
8601f500 MS |
2023 | current_thread = pid_to_thread_id (inferior_ptid); |
2024 | ||
c906108c SS |
2025 | for (; bsp != NULL; bsp = bsp->next) |
2026 | { | |
2027 | if ((bsp->breakpoint_at != NULL) && | |
4f8d1dc6 VP |
2028 | (bsp->breakpoint_at->owner->type == bp_step_resume) && |
2029 | (bsp->breakpoint_at->owner->thread == current_thread || | |
2030 | bsp->breakpoint_at->owner->thread == -1)) | |
2031 | return bsp->breakpoint_at->owner; | |
c906108c SS |
2032 | } |
2033 | ||
8a3fe4f8 | 2034 | internal_error (__FILE__, __LINE__, _("No step_resume breakpoint found.")); |
c906108c SS |
2035 | } |
2036 | ||
2037 | ||
8671a17b | 2038 | /* Put in *NUM the breakpoint number of the first breakpoint we are stopped |
c906108c SS |
2039 | at. *BSP upon return is a bpstat which points to the remaining |
2040 | breakpoints stopped at (but which is not guaranteed to be good for | |
2041 | anything but further calls to bpstat_num). | |
8671a17b PA |
2042 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
2043 | Return -1 if stopped at a breakpoint that has been deleted since | |
2044 | we set it. | |
2045 | Return 1 otherwise. */ | |
c906108c SS |
2046 | |
2047 | int | |
8671a17b | 2048 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
2049 | { |
2050 | struct breakpoint *b; | |
2051 | ||
2052 | if ((*bsp) == NULL) | |
2053 | return 0; /* No more breakpoint values */ | |
8671a17b | 2054 | |
4f8d1dc6 VP |
2055 | /* We assume we'll never have several bpstats that |
2056 | correspond to a single breakpoint -- otherwise, | |
2057 | this function might return the same number more | |
2058 | than once and this will look ugly. */ | |
2059 | b = (*bsp)->breakpoint_at ? (*bsp)->breakpoint_at->owner : NULL; | |
8671a17b PA |
2060 | *bsp = (*bsp)->next; |
2061 | if (b == NULL) | |
2062 | return -1; /* breakpoint that's been deleted since */ | |
2063 | ||
2064 | *num = b->number; /* We have its number */ | |
2065 | return 1; | |
c906108c SS |
2066 | } |
2067 | ||
2068 | /* Modify BS so that the actions will not be performed. */ | |
2069 | ||
2070 | void | |
fba45db2 | 2071 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
2072 | { |
2073 | for (; bs != NULL; bs = bs->next) | |
2074 | { | |
c2b8ed2c | 2075 | free_command_lines (&bs->commands); |
c906108c SS |
2076 | if (bs->old_val != NULL) |
2077 | { | |
2078 | value_free (bs->old_val); | |
2079 | bs->old_val = NULL; | |
2080 | } | |
2081 | } | |
2082 | } | |
2083 | ||
2084 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ | |
c906108c | 2085 | static void |
4efb68b1 | 2086 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
2087 | { |
2088 | executing_breakpoint_commands = 0; | |
2089 | } | |
2090 | ||
2091 | /* Execute all the commands associated with all the breakpoints at this | |
2092 | location. Any of these commands could cause the process to proceed | |
2093 | beyond this point, etc. We look out for such changes by checking | |
347bddb7 | 2094 | the global "breakpoint_proceeded" after each command. |
c906108c | 2095 | |
347bddb7 PA |
2096 | Returns true if a breakpoint command resumed the inferior. In that |
2097 | case, it is the caller's responsibility to recall it again with the | |
2098 | bpstat of the current thread. */ | |
2099 | ||
2100 | static int | |
2101 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
2102 | { |
2103 | bpstat bs; | |
2104 | struct cleanup *old_chain; | |
347bddb7 | 2105 | int again = 0; |
c906108c SS |
2106 | |
2107 | /* Avoid endless recursion if a `source' command is contained | |
2108 | in bs->commands. */ | |
2109 | if (executing_breakpoint_commands) | |
347bddb7 | 2110 | return 0; |
c906108c SS |
2111 | |
2112 | executing_breakpoint_commands = 1; | |
2113 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
2114 | ||
c906108c SS |
2115 | /* This pointer will iterate over the list of bpstat's. */ |
2116 | bs = *bsp; | |
2117 | ||
2118 | breakpoint_proceeded = 0; | |
2119 | for (; bs != NULL; bs = bs->next) | |
2120 | { | |
6c50ab1c JB |
2121 | struct command_line *cmd; |
2122 | struct cleanup *this_cmd_tree_chain; | |
2123 | ||
2124 | /* Take ownership of the BSP's command tree, if it has one. | |
2125 | ||
2126 | The command tree could legitimately contain commands like | |
2127 | 'step' and 'next', which call clear_proceed_status, which | |
2128 | frees stop_bpstat's command tree. To make sure this doesn't | |
2129 | free the tree we're executing out from under us, we need to | |
2130 | take ownership of the tree ourselves. Since a given bpstat's | |
2131 | commands are only executed once, we don't need to copy it; we | |
2132 | can clear the pointer in the bpstat, and make sure we free | |
2133 | the tree when we're done. */ | |
c906108c | 2134 | cmd = bs->commands; |
6c50ab1c JB |
2135 | bs->commands = 0; |
2136 | this_cmd_tree_chain = make_cleanup_free_command_lines (&cmd); | |
2137 | ||
c906108c SS |
2138 | while (cmd != NULL) |
2139 | { | |
2140 | execute_control_command (cmd); | |
2141 | ||
2142 | if (breakpoint_proceeded) | |
2143 | break; | |
2144 | else | |
2145 | cmd = cmd->next; | |
2146 | } | |
6c50ab1c JB |
2147 | |
2148 | /* We can free this command tree now. */ | |
2149 | do_cleanups (this_cmd_tree_chain); | |
2150 | ||
c906108c | 2151 | if (breakpoint_proceeded) |
32c1e744 VP |
2152 | { |
2153 | if (target_can_async_p ()) | |
347bddb7 PA |
2154 | /* If we are in async mode, then the target might be still |
2155 | running, not stopped at any breakpoint, so nothing for | |
2156 | us to do here -- just return to the event loop. */ | |
2157 | ; | |
32c1e744 VP |
2158 | else |
2159 | /* In sync mode, when execute_control_command returns | |
2160 | we're already standing on the next breakpoint. | |
347bddb7 PA |
2161 | Breakpoint commands for that stop were not run, since |
2162 | execute_command does not run breakpoint commands -- | |
2163 | only command_line_handler does, but that one is not | |
2164 | involved in execution of breakpoint commands. So, we | |
2165 | can now execute breakpoint commands. It should be | |
2166 | noted that making execute_command do bpstat actions is | |
2167 | not an option -- in this case we'll have recursive | |
2168 | invocation of bpstat for each breakpoint with a | |
2169 | command, and can easily blow up GDB stack. Instead, we | |
2170 | return true, which will trigger the caller to recall us | |
2171 | with the new stop_bpstat. */ | |
2172 | again = 1; | |
2173 | break; | |
32c1e744 | 2174 | } |
c906108c | 2175 | } |
c2b8ed2c | 2176 | do_cleanups (old_chain); |
347bddb7 PA |
2177 | return again; |
2178 | } | |
2179 | ||
2180 | void | |
2181 | bpstat_do_actions (void) | |
2182 | { | |
2183 | /* Do any commands attached to breakpoint we are stopped at. */ | |
2184 | while (!ptid_equal (inferior_ptid, null_ptid) | |
2185 | && target_has_execution | |
2186 | && !is_exited (inferior_ptid) | |
2187 | && !is_executing (inferior_ptid)) | |
2188 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
2189 | and only return when it is stopped at the next breakpoint, we | |
2190 | keep doing breakpoint actions until it returns false to | |
2191 | indicate the inferior was not resumed. */ | |
2192 | if (!bpstat_do_actions_1 (&inferior_thread ()->stop_bpstat)) | |
2193 | break; | |
c906108c SS |
2194 | } |
2195 | ||
fa4727a6 DJ |
2196 | /* Print out the (old or new) value associated with a watchpoint. */ |
2197 | ||
2198 | static void | |
2199 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
2200 | { | |
2201 | if (val == NULL) | |
2202 | fprintf_unfiltered (stream, _("<unreadable>")); | |
2203 | else | |
79a45b7d TT |
2204 | { |
2205 | struct value_print_options opts; | |
2206 | get_user_print_options (&opts); | |
2207 | value_print (val, stream, &opts); | |
2208 | } | |
fa4727a6 DJ |
2209 | } |
2210 | ||
e514a9d6 | 2211 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 2212 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
2213 | by having it set different print_it values. |
2214 | ||
2215 | Current scheme: When we stop, bpstat_print() is called. It loops | |
2216 | through the bpstat list of things causing this stop, calling the | |
2217 | print_bp_stop_message function on each one. The behavior of the | |
2218 | print_bp_stop_message function depends on the print_it field of | |
2219 | bpstat. If such field so indicates, call this function here. | |
2220 | ||
2221 | Return values from this routine (ultimately used by bpstat_print() | |
2222 | and normal_stop() to decide what to do): | |
2223 | PRINT_NOTHING: Means we already printed all we needed to print, | |
2224 | don't print anything else. | |
2225 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
2226 | that something to be followed by a location. | |
2227 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
2228 | that something to be followed by a location. | |
2229 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
2230 | analysis. */ | |
c906108c | 2231 | |
917317f4 | 2232 | static enum print_stop_action |
fba45db2 | 2233 | print_it_typical (bpstat bs) |
c906108c | 2234 | { |
3b31d625 | 2235 | struct cleanup *old_chain, *ui_out_chain; |
4f8d1dc6 | 2236 | struct breakpoint *b; |
89f9893c | 2237 | const struct bp_location *bl; |
8b93c638 | 2238 | struct ui_stream *stb; |
2cec12e5 | 2239 | int bp_temp = 0; |
8b93c638 | 2240 | stb = ui_out_stream_new (uiout); |
b02eeafb | 2241 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c SS |
2242 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
2243 | which has since been deleted. */ | |
e514a9d6 | 2244 | if (bs->breakpoint_at == NULL) |
917317f4 | 2245 | return PRINT_UNKNOWN; |
0d381245 VP |
2246 | bl = bs->breakpoint_at; |
2247 | b = bl->owner; | |
c906108c | 2248 | |
4f8d1dc6 | 2249 | switch (b->type) |
c906108c | 2250 | { |
e514a9d6 JM |
2251 | case bp_breakpoint: |
2252 | case bp_hardware_breakpoint: | |
2cec12e5 | 2253 | bp_temp = bs->breakpoint_at->owner->disposition == disp_del; |
0d381245 VP |
2254 | if (bl->address != bl->requested_address) |
2255 | breakpoint_adjustment_warning (bl->requested_address, | |
2256 | bl->address, | |
4f8d1dc6 VP |
2257 | b->number, 1); |
2258 | annotate_breakpoint (b->number); | |
2cec12e5 AR |
2259 | if (bp_temp) |
2260 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
2261 | else | |
2262 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 2263 | if (ui_out_is_mi_like_p (uiout)) |
2cec12e5 AR |
2264 | { |
2265 | ui_out_field_string (uiout, "reason", | |
2266 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
2267 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
2268 | } | |
4f8d1dc6 | 2269 | ui_out_field_int (uiout, "bkptno", b->number); |
8b93c638 JM |
2270 | ui_out_text (uiout, ", "); |
2271 | return PRINT_SRC_AND_LOC; | |
e514a9d6 JM |
2272 | break; |
2273 | ||
2274 | case bp_shlib_event: | |
917317f4 JM |
2275 | /* Did we stop because the user set the stop_on_solib_events |
2276 | variable? (If so, we report this as a generic, "Stopped due | |
2277 | to shlib event" message.) */ | |
a3f17187 | 2278 | printf_filtered (_("Stopped due to shared library event\n")); |
e514a9d6 JM |
2279 | return PRINT_NOTHING; |
2280 | break; | |
2281 | ||
c4093a6a JM |
2282 | case bp_thread_event: |
2283 | /* Not sure how we will get here. | |
2284 | GDB should not stop for these breakpoints. */ | |
a3f17187 | 2285 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); |
c4093a6a JM |
2286 | return PRINT_NOTHING; |
2287 | break; | |
2288 | ||
1900040c MS |
2289 | case bp_overlay_event: |
2290 | /* By analogy with the thread event, GDB should not stop for these. */ | |
a3f17187 | 2291 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
1900040c MS |
2292 | return PRINT_NOTHING; |
2293 | break; | |
2294 | ||
e514a9d6 JM |
2295 | case bp_watchpoint: |
2296 | case bp_hardware_watchpoint: | |
fa4727a6 DJ |
2297 | annotate_watchpoint (b->number); |
2298 | if (ui_out_is_mi_like_p (uiout)) | |
2299 | ui_out_field_string | |
2300 | (uiout, "reason", | |
2301 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
2302 | mention (b); | |
2303 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
2304 | ui_out_text (uiout, "\nOld value = "); | |
2305 | watchpoint_value_print (bs->old_val, stb->stream); | |
2306 | ui_out_field_stream (uiout, "old", stb); | |
2307 | ui_out_text (uiout, "\nNew value = "); | |
2308 | watchpoint_value_print (b->val, stb->stream); | |
2309 | ui_out_field_stream (uiout, "new", stb); | |
2310 | do_cleanups (ui_out_chain); | |
2311 | ui_out_text (uiout, "\n"); | |
e514a9d6 JM |
2312 | /* More than one watchpoint may have been triggered. */ |
2313 | return PRINT_UNKNOWN; | |
2314 | break; | |
2315 | ||
2316 | case bp_read_watchpoint: | |
9dc5e2a9 | 2317 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2318 | ui_out_field_string |
2319 | (uiout, "reason", | |
2320 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 2321 | mention (b); |
3b31d625 | 2322 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 2323 | ui_out_text (uiout, "\nValue = "); |
fa4727a6 | 2324 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 2325 | ui_out_field_stream (uiout, "value", stb); |
3b31d625 | 2326 | do_cleanups (ui_out_chain); |
8b93c638 | 2327 | ui_out_text (uiout, "\n"); |
917317f4 | 2328 | return PRINT_UNKNOWN; |
e514a9d6 JM |
2329 | break; |
2330 | ||
2331 | case bp_access_watchpoint: | |
fa4727a6 | 2332 | if (bs->old_val != NULL) |
8b93c638 | 2333 | { |
4f8d1dc6 | 2334 | annotate_watchpoint (b->number); |
9dc5e2a9 | 2335 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2336 | ui_out_field_string |
2337 | (uiout, "reason", | |
2338 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 2339 | mention (b); |
3b31d625 | 2340 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 2341 | ui_out_text (uiout, "\nOld value = "); |
fa4727a6 | 2342 | watchpoint_value_print (bs->old_val, stb->stream); |
8b93c638 | 2343 | ui_out_field_stream (uiout, "old", stb); |
8b93c638 JM |
2344 | ui_out_text (uiout, "\nNew value = "); |
2345 | } | |
2346 | else | |
2347 | { | |
4f8d1dc6 | 2348 | mention (b); |
9dc5e2a9 | 2349 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2350 | ui_out_field_string |
2351 | (uiout, "reason", | |
2352 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
3b31d625 | 2353 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2354 | ui_out_text (uiout, "\nValue = "); |
2355 | } | |
fa4727a6 | 2356 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 2357 | ui_out_field_stream (uiout, "new", stb); |
3b31d625 | 2358 | do_cleanups (ui_out_chain); |
8b93c638 | 2359 | ui_out_text (uiout, "\n"); |
917317f4 | 2360 | return PRINT_UNKNOWN; |
e514a9d6 | 2361 | break; |
4ce44c66 | 2362 | |
e514a9d6 JM |
2363 | /* Fall through, we don't deal with these types of breakpoints |
2364 | here. */ | |
2365 | ||
11cf8741 | 2366 | case bp_finish: |
9dc5e2a9 | 2367 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2368 | ui_out_field_string |
2369 | (uiout, "reason", | |
2370 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
8b93c638 JM |
2371 | return PRINT_UNKNOWN; |
2372 | break; | |
2373 | ||
e514a9d6 | 2374 | case bp_until: |
9dc5e2a9 | 2375 | if (ui_out_is_mi_like_p (uiout)) |
1fbc2a49 NR |
2376 | ui_out_field_string |
2377 | (uiout, "reason", | |
2378 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
8b93c638 JM |
2379 | return PRINT_UNKNOWN; |
2380 | break; | |
2381 | ||
c2d11a7d | 2382 | case bp_none: |
e514a9d6 JM |
2383 | case bp_longjmp: |
2384 | case bp_longjmp_resume: | |
2385 | case bp_step_resume: | |
e514a9d6 JM |
2386 | case bp_watchpoint_scope: |
2387 | case bp_call_dummy: | |
2388 | default: | |
2389 | return PRINT_UNKNOWN; | |
2390 | } | |
2391 | } | |
2392 | ||
2393 | /* Generic routine for printing messages indicating why we | |
2394 | stopped. The behavior of this function depends on the value | |
2395 | 'print_it' in the bpstat structure. Under some circumstances we | |
2396 | may decide not to print anything here and delegate the task to | |
2397 | normal_stop(). */ | |
2398 | ||
2399 | static enum print_stop_action | |
2400 | print_bp_stop_message (bpstat bs) | |
2401 | { | |
2402 | switch (bs->print_it) | |
2403 | { | |
2404 | case print_it_noop: | |
2405 | /* Nothing should be printed for this bpstat entry. */ | |
2406 | return PRINT_UNKNOWN; | |
2407 | break; | |
2408 | ||
2409 | case print_it_done: | |
2410 | /* We still want to print the frame, but we already printed the | |
2411 | relevant messages. */ | |
2412 | return PRINT_SRC_AND_LOC; | |
2413 | break; | |
2414 | ||
2415 | case print_it_normal: | |
4f8d1dc6 | 2416 | { |
89f9893c | 2417 | const struct bp_location *bl = bs->breakpoint_at; |
4f8d1dc6 VP |
2418 | struct breakpoint *b = bl ? bl->owner : NULL; |
2419 | ||
2420 | /* Normal case. Call the breakpoint's print_it method, or | |
2421 | print_it_typical. */ | |
2422 | /* FIXME: how breakpoint can ever be NULL here? */ | |
2423 | if (b != NULL && b->ops != NULL && b->ops->print_it != NULL) | |
2424 | return b->ops->print_it (b); | |
2425 | else | |
2426 | return print_it_typical (bs); | |
2427 | } | |
2428 | break; | |
3086aeae | 2429 | |
e514a9d6 | 2430 | default: |
8e65ff28 | 2431 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2432 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 2433 | break; |
c906108c | 2434 | } |
c906108c SS |
2435 | } |
2436 | ||
e514a9d6 JM |
2437 | /* Print a message indicating what happened. This is called from |
2438 | normal_stop(). The input to this routine is the head of the bpstat | |
2439 | list - a list of the eventpoints that caused this stop. This | |
2440 | routine calls the generic print routine for printing a message | |
2441 | about reasons for stopping. This will print (for example) the | |
2442 | "Breakpoint n," part of the output. The return value of this | |
2443 | routine is one of: | |
c906108c | 2444 | |
917317f4 JM |
2445 | PRINT_UNKNOWN: Means we printed nothing |
2446 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2447 | code to print the location. An example is |
2448 | "Breakpoint 1, " which should be followed by | |
2449 | the location. | |
917317f4 | 2450 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2451 | to also print the location part of the message. |
2452 | An example is the catch/throw messages, which | |
917317f4 JM |
2453 | don't require a location appended to the end. |
2454 | PRINT_NOTHING: We have done some printing and we don't need any | |
2455 | further info to be printed.*/ | |
c906108c | 2456 | |
917317f4 | 2457 | enum print_stop_action |
fba45db2 | 2458 | bpstat_print (bpstat bs) |
c906108c SS |
2459 | { |
2460 | int val; | |
c5aa993b | 2461 | |
c906108c | 2462 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2463 | (Currently all watchpoints go on the bpstat whether hit or not. |
2464 | That probably could (should) be changed, provided care is taken | |
c906108c | 2465 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2466 | for (; bs; bs = bs->next) |
2467 | { | |
2468 | val = print_bp_stop_message (bs); | |
2469 | if (val == PRINT_SRC_ONLY | |
2470 | || val == PRINT_SRC_AND_LOC | |
2471 | || val == PRINT_NOTHING) | |
2472 | return val; | |
2473 | } | |
c906108c | 2474 | |
e514a9d6 JM |
2475 | /* We reached the end of the chain, or we got a null BS to start |
2476 | with and nothing was printed. */ | |
917317f4 | 2477 | return PRINT_UNKNOWN; |
c906108c SS |
2478 | } |
2479 | ||
2480 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2481 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2482 | The argument is a "struct expression *" that has been cast to char * to | |
2483 | make it pass through catch_errors. */ | |
2484 | ||
2485 | static int | |
4efb68b1 | 2486 | breakpoint_cond_eval (void *exp) |
c906108c | 2487 | { |
278cd55f | 2488 | struct value *mark = value_mark (); |
c5aa993b | 2489 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2490 | value_free_to_mark (mark); |
2491 | return i; | |
2492 | } | |
2493 | ||
2494 | /* Allocate a new bpstat and chain it to the current one. */ | |
2495 | ||
2496 | static bpstat | |
89f9893c | 2497 | bpstat_alloc (const struct bp_location *bl, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
2498 | { |
2499 | bpstat bs; | |
2500 | ||
2501 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2502 | cbs->next = bs; | |
4f8d1dc6 | 2503 | bs->breakpoint_at = bl; |
c906108c SS |
2504 | /* If the condition is false, etc., don't do the commands. */ |
2505 | bs->commands = NULL; | |
2506 | bs->old_val = NULL; | |
2507 | bs->print_it = print_it_normal; | |
2508 | return bs; | |
2509 | } | |
2510 | \f | |
d983da9c DJ |
2511 | /* The target has stopped with waitstatus WS. Check if any hardware |
2512 | watchpoints have triggered, according to the target. */ | |
2513 | ||
2514 | int | |
2515 | watchpoints_triggered (struct target_waitstatus *ws) | |
2516 | { | |
2517 | int stopped_by_watchpoint = STOPPED_BY_WATCHPOINT (*ws); | |
2518 | CORE_ADDR addr; | |
2519 | struct breakpoint *b; | |
2520 | ||
2521 | if (!stopped_by_watchpoint) | |
2522 | { | |
2523 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
2524 | as not triggered. */ | |
2525 | ALL_BREAKPOINTS (b) | |
2526 | if (b->type == bp_hardware_watchpoint | |
2527 | || b->type == bp_read_watchpoint | |
2528 | || b->type == bp_access_watchpoint) | |
2529 | b->watchpoint_triggered = watch_triggered_no; | |
2530 | ||
2531 | return 0; | |
2532 | } | |
2533 | ||
2534 | if (!target_stopped_data_address (¤t_target, &addr)) | |
2535 | { | |
2536 | /* We were stopped by a watchpoint, but we don't know where. | |
2537 | Mark all watchpoints as unknown. */ | |
2538 | ALL_BREAKPOINTS (b) | |
2539 | if (b->type == bp_hardware_watchpoint | |
2540 | || b->type == bp_read_watchpoint | |
2541 | || b->type == bp_access_watchpoint) | |
2542 | b->watchpoint_triggered = watch_triggered_unknown; | |
2543 | ||
2544 | return stopped_by_watchpoint; | |
2545 | } | |
2546 | ||
2547 | /* The target could report the data address. Mark watchpoints | |
2548 | affected by this data address as triggered, and all others as not | |
2549 | triggered. */ | |
2550 | ||
2551 | ALL_BREAKPOINTS (b) | |
2552 | if (b->type == bp_hardware_watchpoint | |
2553 | || b->type == bp_read_watchpoint | |
2554 | || b->type == bp_access_watchpoint) | |
2555 | { | |
a5606eee | 2556 | struct bp_location *loc; |
d983da9c DJ |
2557 | struct value *v; |
2558 | ||
2559 | b->watchpoint_triggered = watch_triggered_no; | |
a5606eee VP |
2560 | for (loc = b->loc; loc; loc = loc->next) |
2561 | /* Exact match not required. Within range is | |
2562 | sufficient. */ | |
5009afc5 AS |
2563 | if (target_watchpoint_addr_within_range (¤t_target, |
2564 | addr, loc->address, | |
2565 | loc->length)) | |
a5606eee VP |
2566 | { |
2567 | b->watchpoint_triggered = watch_triggered_yes; | |
2568 | break; | |
2569 | } | |
d983da9c DJ |
2570 | } |
2571 | ||
2572 | return 1; | |
2573 | } | |
2574 | ||
c906108c SS |
2575 | /* Possible return values for watchpoint_check (this can't be an enum |
2576 | because of check_errors). */ | |
2577 | /* The watchpoint has been deleted. */ | |
2578 | #define WP_DELETED 1 | |
2579 | /* The value has changed. */ | |
2580 | #define WP_VALUE_CHANGED 2 | |
2581 | /* The value has not changed. */ | |
2582 | #define WP_VALUE_NOT_CHANGED 3 | |
2583 | ||
2584 | #define BP_TEMPFLAG 1 | |
2585 | #define BP_HARDWAREFLAG 2 | |
2586 | ||
2587 | /* Check watchpoint condition. */ | |
2588 | ||
2589 | static int | |
4efb68b1 | 2590 | watchpoint_check (void *p) |
c906108c SS |
2591 | { |
2592 | bpstat bs = (bpstat) p; | |
2593 | struct breakpoint *b; | |
2594 | struct frame_info *fr; | |
2595 | int within_current_scope; | |
2596 | ||
4f8d1dc6 | 2597 | b = bs->breakpoint_at->owner; |
c906108c SS |
2598 | |
2599 | if (b->exp_valid_block == NULL) | |
2600 | within_current_scope = 1; | |
2601 | else | |
2602 | { | |
2603 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2604 | any chance of handling watchpoints on local variables, we'll need |
2605 | the frame chain (so we can determine if we're in scope). */ | |
2606 | reinit_frame_cache (); | |
101dcfbe | 2607 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 2608 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
2609 | |
2610 | /* If we've gotten confused in the unwinder, we might have | |
2611 | returned a frame that can't describe this variable. */ | |
2612 | if (within_current_scope | |
7f0df278 DJ |
2613 | && (block_linkage_function (b->exp_valid_block) |
2614 | != get_frame_function (fr))) | |
69fbadd5 DJ |
2615 | within_current_scope = 0; |
2616 | ||
c12260ac CV |
2617 | /* in_function_epilogue_p() returns a non-zero value if we're still |
2618 | in the function but the stack frame has already been invalidated. | |
2619 | Since we can't rely on the values of local variables after the | |
2620 | stack has been destroyed, we are treating the watchpoint in that | |
a957e642 CV |
2621 | state as `not changed' without further checking. |
2622 | ||
2623 | vinschen/2003-09-04: The former implementation left out the case | |
2624 | that the watchpoint frame couldn't be found by frame_find_by_id() | |
2625 | because the current PC is currently in an epilogue. Calling | |
2626 | gdbarch_in_function_epilogue_p() also when fr == NULL fixes that. */ | |
a6fbcf2f | 2627 | if ((!within_current_scope || fr == get_current_frame ()) |
c12260ac CV |
2628 | && gdbarch_in_function_epilogue_p (current_gdbarch, read_pc ())) |
2629 | return WP_VALUE_NOT_CHANGED; | |
a6fbcf2f | 2630 | if (fr && within_current_scope) |
c906108c SS |
2631 | /* If we end up stopping, the current frame will get selected |
2632 | in normal_stop. So this call to select_frame won't affect | |
2633 | the user. */ | |
0f7d239c | 2634 | select_frame (fr); |
c906108c | 2635 | } |
c5aa993b | 2636 | |
c906108c SS |
2637 | if (within_current_scope) |
2638 | { | |
2639 | /* We use value_{,free_to_}mark because it could be a | |
2640 | *long* time before we return to the command level and | |
c5aa993b JM |
2641 | call free_all_values. We can't call free_all_values because |
2642 | we might be in the middle of evaluating a function call. */ | |
c906108c | 2643 | |
278cd55f | 2644 | struct value *mark = value_mark (); |
fa4727a6 DJ |
2645 | struct value *new_val; |
2646 | ||
2647 | fetch_watchpoint_value (b->exp, &new_val, NULL, NULL); | |
2648 | if ((b->val != NULL) != (new_val != NULL) | |
2649 | || (b->val != NULL && !value_equal (b->val, new_val))) | |
c906108c | 2650 | { |
fa4727a6 DJ |
2651 | if (new_val != NULL) |
2652 | { | |
2653 | release_value (new_val); | |
2654 | value_free_to_mark (mark); | |
2655 | } | |
c906108c SS |
2656 | bs->old_val = b->val; |
2657 | b->val = new_val; | |
fa4727a6 | 2658 | b->val_valid = 1; |
c906108c SS |
2659 | /* We will stop here */ |
2660 | return WP_VALUE_CHANGED; | |
2661 | } | |
2662 | else | |
2663 | { | |
2664 | /* Nothing changed, don't do anything. */ | |
2665 | value_free_to_mark (mark); | |
2666 | /* We won't stop here */ | |
2667 | return WP_VALUE_NOT_CHANGED; | |
2668 | } | |
2669 | } | |
2670 | else | |
2671 | { | |
2672 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2673 | if we temporarily ignored the watchpoint, then when |
2674 | we reenter the block in which it is valid it contains | |
2675 | garbage (in the case of a function, it may have two | |
2676 | garbage values, one before and one after the prologue). | |
2677 | So we can't even detect the first assignment to it and | |
2678 | watch after that (since the garbage may or may not equal | |
2679 | the first value assigned). */ | |
4ce44c66 JM |
2680 | /* We print all the stop information in print_it_typical(), but |
2681 | in this case, by the time we call print_it_typical() this bp | |
2682 | will be deleted already. So we have no choice but print the | |
2683 | information here. */ | |
9dc5e2a9 | 2684 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2685 | ui_out_field_string |
2686 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 2687 | ui_out_text (uiout, "\nWatchpoint "); |
4f8d1dc6 | 2688 | ui_out_field_int (uiout, "wpnum", b->number); |
8b93c638 JM |
2689 | ui_out_text (uiout, " deleted because the program has left the block in\n\ |
2690 | which its expression is valid.\n"); | |
4ce44c66 | 2691 | |
c906108c | 2692 | if (b->related_breakpoint) |
b5de0fa7 EZ |
2693 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2694 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
2695 | |
2696 | return WP_DELETED; | |
2697 | } | |
2698 | } | |
2699 | ||
18a18393 VP |
2700 | /* Return true if it looks like target has stopped due to hitting |
2701 | breakpoint location BL. This function does not check if we | |
2702 | should stop, only if BL explains the stop. */ | |
2703 | static int | |
2704 | bpstat_check_location (const struct bp_location *bl, CORE_ADDR bp_addr) | |
2705 | { | |
2706 | struct breakpoint *b = bl->owner; | |
2707 | ||
2708 | if (b->type != bp_watchpoint | |
2709 | && b->type != bp_hardware_watchpoint | |
2710 | && b->type != bp_read_watchpoint | |
2711 | && b->type != bp_access_watchpoint | |
2712 | && b->type != bp_hardware_breakpoint | |
fe798b75 | 2713 | && b->type != bp_catchpoint) /* a non-watchpoint bp */ |
18a18393 VP |
2714 | { |
2715 | if (bl->address != bp_addr) /* address doesn't match */ | |
2716 | return 0; | |
2717 | if (overlay_debugging /* unmapped overlay section */ | |
2718 | && section_is_overlay (bl->section) | |
2719 | && !section_is_mapped (bl->section)) | |
2720 | return 0; | |
2721 | } | |
2722 | ||
2723 | /* Continuable hardware watchpoints are treated as non-existent if the | |
2724 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
2725 | some data address). Otherwise gdb won't stop on a break instruction | |
2726 | in the code (not from a breakpoint) when a hardware watchpoint has | |
2727 | been defined. Also skip watchpoints which we know did not trigger | |
2728 | (did not match the data address). */ | |
2729 | ||
2730 | if ((b->type == bp_hardware_watchpoint | |
2731 | || b->type == bp_read_watchpoint | |
2732 | || b->type == bp_access_watchpoint) | |
2733 | && b->watchpoint_triggered == watch_triggered_no) | |
2734 | return 0; | |
2735 | ||
2736 | if (b->type == bp_hardware_breakpoint) | |
2737 | { | |
2738 | if (bl->address != bp_addr) | |
2739 | return 0; | |
2740 | if (overlay_debugging /* unmapped overlay section */ | |
2741 | && section_is_overlay (bl->section) | |
2742 | && !section_is_mapped (bl->section)) | |
2743 | return 0; | |
2744 | } | |
ce78b96d | 2745 | |
ce78b96d JB |
2746 | if (b->type == bp_catchpoint) |
2747 | { | |
2748 | gdb_assert (b->ops != NULL && b->ops->breakpoint_hit != NULL); | |
2749 | if (!b->ops->breakpoint_hit (b)) | |
2750 | return 0; | |
2751 | } | |
2752 | ||
18a18393 VP |
2753 | return 1; |
2754 | } | |
2755 | ||
2756 | /* If BS refers to a watchpoint, determine if the watched values | |
2757 | has actually changed, and we should stop. If not, set BS->stop | |
2758 | to 0. */ | |
2759 | static void | |
2760 | bpstat_check_watchpoint (bpstat bs) | |
2761 | { | |
2762 | const struct bp_location *bl = bs->breakpoint_at; | |
2763 | struct breakpoint *b = bl->owner; | |
2764 | ||
2765 | if (b->type == bp_watchpoint | |
2766 | || b->type == bp_read_watchpoint | |
2767 | || b->type == bp_access_watchpoint | |
2768 | || b->type == bp_hardware_watchpoint) | |
2769 | { | |
2770 | CORE_ADDR addr; | |
2771 | struct value *v; | |
2772 | int must_check_value = 0; | |
2773 | ||
2774 | if (b->type == bp_watchpoint) | |
2775 | /* For a software watchpoint, we must always check the | |
2776 | watched value. */ | |
2777 | must_check_value = 1; | |
2778 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
2779 | /* We have a hardware watchpoint (read, write, or access) | |
2780 | and the target earlier reported an address watched by | |
2781 | this watchpoint. */ | |
2782 | must_check_value = 1; | |
2783 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
2784 | && b->type == bp_hardware_watchpoint) | |
2785 | /* We were stopped by a hardware watchpoint, but the target could | |
2786 | not report the data address. We must check the watchpoint's | |
2787 | value. Access and read watchpoints are out of luck; without | |
2788 | a data address, we can't figure it out. */ | |
2789 | must_check_value = 1; | |
2790 | ||
2791 | if (must_check_value) | |
2792 | { | |
2793 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
2794 | b->number); | |
2795 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2796 | int e = catch_errors (watchpoint_check, bs, message, | |
2797 | RETURN_MASK_ALL); | |
2798 | do_cleanups (cleanups); | |
2799 | switch (e) | |
2800 | { | |
2801 | case WP_DELETED: | |
2802 | /* We've already printed what needs to be printed. */ | |
2803 | bs->print_it = print_it_done; | |
2804 | /* Stop. */ | |
2805 | break; | |
2806 | case WP_VALUE_CHANGED: | |
2807 | if (b->type == bp_read_watchpoint) | |
2808 | { | |
2809 | /* Don't stop: read watchpoints shouldn't fire if | |
2810 | the value has changed. This is for targets | |
2811 | which cannot set read-only watchpoints. */ | |
2812 | bs->print_it = print_it_noop; | |
2813 | bs->stop = 0; | |
2814 | } | |
2815 | break; | |
2816 | case WP_VALUE_NOT_CHANGED: | |
2817 | if (b->type == bp_hardware_watchpoint | |
2818 | || b->type == bp_watchpoint) | |
2819 | { | |
2820 | /* Don't stop: write watchpoints shouldn't fire if | |
2821 | the value hasn't changed. */ | |
2822 | bs->print_it = print_it_noop; | |
2823 | bs->stop = 0; | |
2824 | } | |
2825 | /* Stop. */ | |
2826 | break; | |
2827 | default: | |
2828 | /* Can't happen. */ | |
2829 | case 0: | |
2830 | /* Error from catch_errors. */ | |
2831 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); | |
2832 | if (b->related_breakpoint) | |
2833 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
2834 | b->disposition = disp_del_at_next_stop; | |
2835 | /* We've already printed what needs to be printed. */ | |
2836 | bs->print_it = print_it_done; | |
2837 | break; | |
2838 | } | |
2839 | } | |
2840 | else /* must_check_value == 0 */ | |
2841 | { | |
2842 | /* This is a case where some watchpoint(s) triggered, but | |
2843 | not at the address of this watchpoint, or else no | |
2844 | watchpoint triggered after all. So don't print | |
2845 | anything for this watchpoint. */ | |
2846 | bs->print_it = print_it_noop; | |
2847 | bs->stop = 0; | |
2848 | } | |
2849 | } | |
2850 | } | |
2851 | ||
2852 | ||
2853 | /* Check conditions (condition proper, frame, thread and ignore count) | |
2854 | of breakpoint referred to by BS. If we should not stop for this | |
2855 | breakpoint, set BS->stop to 0. */ | |
2856 | static void | |
2857 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
2858 | { | |
2859 | int thread_id = pid_to_thread_id (ptid); | |
2860 | const struct bp_location *bl = bs->breakpoint_at; | |
2861 | struct breakpoint *b = bl->owner; | |
2862 | ||
2863 | if (frame_id_p (b->frame_id) | |
2864 | && !frame_id_eq (b->frame_id, get_frame_id (get_current_frame ()))) | |
2865 | bs->stop = 0; | |
2866 | else if (bs->stop) | |
2867 | { | |
2868 | int value_is_zero = 0; | |
2869 | ||
2870 | /* If this is a scope breakpoint, mark the associated | |
2871 | watchpoint as triggered so that we will handle the | |
2872 | out-of-scope event. We'll get to the watchpoint next | |
2873 | iteration. */ | |
2874 | if (b->type == bp_watchpoint_scope) | |
2875 | b->related_breakpoint->watchpoint_triggered = watch_triggered_yes; | |
2876 | ||
2877 | if (bl->cond && bl->owner->disposition != disp_del_at_next_stop) | |
2878 | { | |
2879 | /* Need to select the frame, with all that implies | |
2880 | so that the conditions will have the right context. */ | |
2881 | select_frame (get_current_frame ()); | |
2882 | value_is_zero | |
2883 | = catch_errors (breakpoint_cond_eval, (bl->cond), | |
2884 | "Error in testing breakpoint condition:\n", | |
2885 | RETURN_MASK_ALL); | |
2886 | /* FIXME-someday, should give breakpoint # */ | |
2887 | free_all_values (); | |
2888 | } | |
2889 | if (bl->cond && value_is_zero) | |
2890 | { | |
2891 | bs->stop = 0; | |
2892 | } | |
2893 | else if (b->thread != -1 && b->thread != thread_id) | |
2894 | { | |
2895 | bs->stop = 0; | |
2896 | } | |
2897 | else if (b->ignore_count > 0) | |
2898 | { | |
2899 | b->ignore_count--; | |
2900 | annotate_ignore_count_change (); | |
2901 | bs->stop = 0; | |
2902 | /* Increase the hit count even though we don't | |
2903 | stop. */ | |
2904 | ++(b->hit_count); | |
2905 | } | |
2906 | } | |
2907 | } | |
2908 | ||
2909 | ||
9709f61c | 2910 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 2911 | BP_ADDR in thread PTID. |
c906108c | 2912 | |
d983da9c | 2913 | Determine whether we stopped at a breakpoint, etc, or whether we |
c906108c SS |
2914 | don't understand this stop. Result is a chain of bpstat's such that: |
2915 | ||
c5aa993b | 2916 | if we don't understand the stop, the result is a null pointer. |
c906108c | 2917 | |
c5aa993b | 2918 | if we understand why we stopped, the result is not null. |
c906108c | 2919 | |
c5aa993b JM |
2920 | Each element of the chain refers to a particular breakpoint or |
2921 | watchpoint at which we have stopped. (We may have stopped for | |
2922 | several reasons concurrently.) | |
c906108c | 2923 | |
c5aa993b JM |
2924 | Each element of the chain has valid next, breakpoint_at, |
2925 | commands, FIXME??? fields. */ | |
c906108c SS |
2926 | |
2927 | bpstat | |
d983da9c | 2928 | bpstat_stop_status (CORE_ADDR bp_addr, ptid_t ptid) |
c906108c | 2929 | { |
0d381245 | 2930 | struct breakpoint *b = NULL; |
89f9893c | 2931 | const struct bp_location *bl; |
20874c92 | 2932 | struct bp_location *loc; |
c906108c SS |
2933 | /* Root of the chain of bpstat's */ |
2934 | struct bpstats root_bs[1]; | |
2935 | /* Pointer to the last thing in the chain currently. */ | |
2936 | bpstat bs = root_bs; | |
20874c92 | 2937 | int ix; |
d832cb68 | 2938 | int need_remove_insert; |
c906108c | 2939 | |
0d381245 | 2940 | ALL_BP_LOCATIONS (bl) |
c5aa993b | 2941 | { |
0d381245 VP |
2942 | b = bl->owner; |
2943 | gdb_assert (b); | |
468d015d | 2944 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) |
c5aa993b JM |
2945 | continue; |
2946 | ||
a5606eee VP |
2947 | /* For hardware watchpoints, we look only at the first location. |
2948 | The watchpoint_check function will work on entire expression, | |
2949 | not the individual locations. For read watchopints, the | |
2950 | watchpoints_triggered function have checked all locations | |
2951 | alrea | |
2952 | */ | |
2953 | if (b->type == bp_hardware_watchpoint && bl != b->loc) | |
2954 | continue; | |
2955 | ||
18a18393 VP |
2956 | if (!bpstat_check_location (bl, bp_addr)) |
2957 | continue; | |
2958 | ||
c5aa993b JM |
2959 | /* Come here if it's a watchpoint, or if the break address matches */ |
2960 | ||
0d381245 | 2961 | bs = bpstat_alloc (bl, bs); /* Alloc a bpstat to explain stop */ |
c5aa993b | 2962 | |
18a18393 VP |
2963 | /* Assume we stop. Should we find watchpoint that is not actually |
2964 | triggered, or if condition of breakpoint is false, we'll reset | |
2965 | 'stop' to 0. */ | |
c5aa993b JM |
2966 | bs->stop = 1; |
2967 | bs->print = 1; | |
2968 | ||
18a18393 VP |
2969 | bpstat_check_watchpoint (bs); |
2970 | if (!bs->stop) | |
2971 | continue; | |
c5aa993b | 2972 | |
18a18393 VP |
2973 | if (b->type == bp_thread_event || b->type == bp_overlay_event) |
2974 | /* We do not stop for these. */ | |
c5aa993b JM |
2975 | bs->stop = 0; |
2976 | else | |
18a18393 VP |
2977 | bpstat_check_breakpoint_conditions (bs, ptid); |
2978 | ||
2979 | if (bs->stop) | |
c5aa993b | 2980 | { |
18a18393 | 2981 | ++(b->hit_count); |
d983da9c | 2982 | |
18a18393 VP |
2983 | /* We will stop here */ |
2984 | if (b->disposition == disp_disable) | |
c5aa993b | 2985 | { |
514f746b AR |
2986 | if (b->enable_state != bp_permanent) |
2987 | b->enable_state = bp_disabled; | |
b60e7edf | 2988 | update_global_location_list (0); |
c5aa993b | 2989 | } |
18a18393 VP |
2990 | if (b->silent) |
2991 | bs->print = 0; | |
2992 | bs->commands = b->commands; | |
2993 | if (bs->commands && | |
2994 | (strcmp ("silent", bs->commands->line) == 0 | |
2995 | || (xdb_commands && strcmp ("Q", bs->commands->line) == 0))) | |
c5aa993b | 2996 | { |
18a18393 VP |
2997 | bs->commands = bs->commands->next; |
2998 | bs->print = 0; | |
c5aa993b | 2999 | } |
18a18393 | 3000 | bs->commands = copy_command_lines (bs->commands); |
c5aa993b | 3001 | } |
18a18393 | 3002 | |
c5aa993b JM |
3003 | /* Print nothing for this entry if we dont stop or if we dont print. */ |
3004 | if (bs->stop == 0 || bs->print == 0) | |
3005 | bs->print_it = print_it_noop; | |
3006 | } | |
c906108c | 3007 | |
20874c92 VP |
3008 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) |
3009 | { | |
3010 | if (loc->address == bp_addr) | |
3011 | { | |
3012 | bs = bpstat_alloc (loc, bs); | |
3013 | /* For hits of moribund locations, we should just proceed. */ | |
3014 | bs->stop = 0; | |
3015 | bs->print = 0; | |
3016 | bs->print_it = print_it_noop; | |
3017 | } | |
3018 | } | |
3019 | ||
c906108c SS |
3020 | bs->next = NULL; /* Terminate the chain */ |
3021 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
3022 | ||
d983da9c DJ |
3023 | /* If we aren't stopping, the value of some hardware watchpoint may |
3024 | not have changed, but the intermediate memory locations we are | |
3025 | watching may have. Don't bother if we're stopping; this will get | |
3026 | done later. */ | |
3027 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3028 | if (bs->stop) | |
3029 | break; | |
3030 | ||
d832cb68 | 3031 | need_remove_insert = 0; |
d983da9c DJ |
3032 | if (bs == NULL) |
3033 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3034 | if (!bs->stop | |
20874c92 | 3035 | && bs->breakpoint_at->owner |
d983da9c DJ |
3036 | && (bs->breakpoint_at->owner->type == bp_hardware_watchpoint |
3037 | || bs->breakpoint_at->owner->type == bp_read_watchpoint | |
3038 | || bs->breakpoint_at->owner->type == bp_access_watchpoint)) | |
3039 | { | |
a5606eee VP |
3040 | /* remove/insert can invalidate bs->breakpoint_at, if this |
3041 | location is no longer used by the watchpoint. Prevent | |
3042 | further code from trying to use it. */ | |
3043 | bs->breakpoint_at = NULL; | |
d832cb68 | 3044 | need_remove_insert = 1; |
d983da9c DJ |
3045 | } |
3046 | ||
d832cb68 DD |
3047 | if (need_remove_insert) |
3048 | { | |
3049 | remove_breakpoints (); | |
3050 | insert_breakpoints (); | |
3051 | } | |
3052 | ||
d983da9c | 3053 | return root_bs->next; |
c906108c SS |
3054 | } |
3055 | \f | |
3056 | /* Tell what to do about this bpstat. */ | |
3057 | struct bpstat_what | |
fba45db2 | 3058 | bpstat_what (bpstat bs) |
c906108c SS |
3059 | { |
3060 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
3061 | enum class |
3062 | { | |
3063 | /* This bpstat element has no effect on the main_action. */ | |
3064 | no_effect = 0, | |
3065 | ||
3066 | /* There was a watchpoint, stop but don't print. */ | |
3067 | wp_silent, | |
c906108c | 3068 | |
c5aa993b JM |
3069 | /* There was a watchpoint, stop and print. */ |
3070 | wp_noisy, | |
c906108c | 3071 | |
c5aa993b JM |
3072 | /* There was a breakpoint but we're not stopping. */ |
3073 | bp_nostop, | |
c906108c | 3074 | |
c5aa993b JM |
3075 | /* There was a breakpoint, stop but don't print. */ |
3076 | bp_silent, | |
c906108c | 3077 | |
c5aa993b JM |
3078 | /* There was a breakpoint, stop and print. */ |
3079 | bp_noisy, | |
c906108c | 3080 | |
c5aa993b JM |
3081 | /* We hit the longjmp breakpoint. */ |
3082 | long_jump, | |
c906108c | 3083 | |
c5aa993b JM |
3084 | /* We hit the longjmp_resume breakpoint. */ |
3085 | long_resume, | |
c906108c | 3086 | |
c5aa993b JM |
3087 | /* We hit the step_resume breakpoint. */ |
3088 | step_resume, | |
c906108c | 3089 | |
c5aa993b JM |
3090 | /* We hit the shared library event breakpoint. */ |
3091 | shlib_event, | |
c906108c | 3092 | |
c5aa993b JM |
3093 | /* This is just used to count how many enums there are. */ |
3094 | class_last | |
c906108c SS |
3095 | }; |
3096 | ||
3097 | /* Here is the table which drives this routine. So that we can | |
3098 | format it pretty, we define some abbreviations for the | |
3099 | enum bpstat_what codes. */ | |
3100 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
3101 | #define ss BPSTAT_WHAT_STOP_SILENT | |
3102 | #define sn BPSTAT_WHAT_STOP_NOISY | |
3103 | #define sgl BPSTAT_WHAT_SINGLE | |
3104 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
3105 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
c906108c | 3106 | #define sr BPSTAT_WHAT_STEP_RESUME |
c906108c | 3107 | #define shl BPSTAT_WHAT_CHECK_SHLIBS |
c906108c SS |
3108 | |
3109 | /* "Can't happen." Might want to print an error message. | |
3110 | abort() is not out of the question, but chances are GDB is just | |
3111 | a bit confused, not unusable. */ | |
3112 | #define err BPSTAT_WHAT_STOP_NOISY | |
3113 | ||
3114 | /* Given an old action and a class, come up with a new action. */ | |
3115 | /* One interesting property of this table is that wp_silent is the same | |
3116 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
3117 | after stopping, the check for whether to step over a breakpoint | |
3118 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
3119 | reference to how we stopped. We retain separate wp_silent and |
3120 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
3121 | |
3122 | Another possibly interesting property of this table is that | |
3123 | there's a partial ordering, priority-like, of the actions. Once | |
3124 | you've decided that some action is appropriate, you'll never go | |
3125 | back and decide something of a lower priority is better. The | |
3126 | ordering is: | |
3127 | ||
d81191fc JB |
3128 | kc < clr sgl shl slr sn sr ss |
3129 | sgl < shl slr sn sr ss | |
3130 | slr < err shl sn sr ss | |
3131 | clr < err shl sn sr ss | |
3132 | ss < shl sn sr | |
3133 | sn < shl sr | |
3134 | shl < sr | |
4d5b2cd7 | 3135 | sr < |
c5aa993b | 3136 | |
43ff13b4 JM |
3137 | What I think this means is that we don't need a damned table |
3138 | here. If you just put the rows and columns in the right order, | |
3139 | it'd look awfully regular. We could simply walk the bpstat list | |
3140 | and choose the highest priority action we find, with a little | |
78b6a731 | 3141 | logic to handle the 'err' cases. */ |
c906108c SS |
3142 | |
3143 | /* step_resume entries: a step resume breakpoint overrides another | |
3144 | breakpoint of signal handling (see comment in wait_for_inferior | |
fcf70625 | 3145 | at where we set the step_resume breakpoint). */ |
c906108c SS |
3146 | |
3147 | static const enum bpstat_what_main_action | |
c5aa993b JM |
3148 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
3149 | { | |
3150 | /* old action */ | |
d81191fc | 3151 | /* kc ss sn sgl slr clr sr shl |
c5aa993b JM |
3152 | */ |
3153 | /*no_effect */ | |
d81191fc | 3154 | {kc, ss, sn, sgl, slr, clr, sr, shl}, |
c5aa993b | 3155 | /*wp_silent */ |
d81191fc | 3156 | {ss, ss, sn, ss, ss, ss, sr, shl}, |
c5aa993b | 3157 | /*wp_noisy */ |
d81191fc | 3158 | {sn, sn, sn, sn, sn, sn, sr, shl}, |
c5aa993b | 3159 | /*bp_nostop */ |
d81191fc | 3160 | {sgl, ss, sn, sgl, slr, slr, sr, shl}, |
c5aa993b | 3161 | /*bp_silent */ |
d81191fc | 3162 | {ss, ss, sn, ss, ss, ss, sr, shl}, |
c5aa993b | 3163 | /*bp_noisy */ |
d81191fc | 3164 | {sn, sn, sn, sn, sn, sn, sr, shl}, |
c5aa993b | 3165 | /*long_jump */ |
d81191fc | 3166 | {slr, ss, sn, slr, slr, err, sr, shl}, |
c5aa993b | 3167 | /*long_resume */ |
d81191fc | 3168 | {clr, ss, sn, err, err, err, sr, shl}, |
c5aa993b | 3169 | /*step_resume */ |
d81191fc | 3170 | {sr, sr, sr, sr, sr, sr, sr, sr}, |
c5aa993b | 3171 | /*shlib */ |
d81191fc | 3172 | {shl, shl, shl, shl, shl, shl, sr, shl} |
c5aa993b | 3173 | }; |
c906108c SS |
3174 | |
3175 | #undef kc | |
3176 | #undef ss | |
3177 | #undef sn | |
3178 | #undef sgl | |
3179 | #undef slr | |
3180 | #undef clr | |
c906108c SS |
3181 | #undef err |
3182 | #undef sr | |
3183 | #undef ts | |
3184 | #undef shl | |
c906108c SS |
3185 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; |
3186 | struct bpstat_what retval; | |
3187 | ||
3188 | retval.call_dummy = 0; | |
3189 | for (; bs != NULL; bs = bs->next) | |
3190 | { | |
3191 | enum class bs_class = no_effect; | |
3192 | if (bs->breakpoint_at == NULL) | |
3193 | /* I suspect this can happen if it was a momentary breakpoint | |
3194 | which has since been deleted. */ | |
3195 | continue; | |
20874c92 VP |
3196 | if (bs->breakpoint_at->owner == NULL) |
3197 | bs_class = bp_nostop; | |
3198 | else | |
4f8d1dc6 | 3199 | switch (bs->breakpoint_at->owner->type) |
c906108c SS |
3200 | { |
3201 | case bp_none: | |
3202 | continue; | |
3203 | ||
3204 | case bp_breakpoint: | |
3205 | case bp_hardware_breakpoint: | |
3206 | case bp_until: | |
3207 | case bp_finish: | |
3208 | if (bs->stop) | |
3209 | { | |
3210 | if (bs->print) | |
3211 | bs_class = bp_noisy; | |
3212 | else | |
3213 | bs_class = bp_silent; | |
3214 | } | |
3215 | else | |
3216 | bs_class = bp_nostop; | |
3217 | break; | |
3218 | case bp_watchpoint: | |
3219 | case bp_hardware_watchpoint: | |
3220 | case bp_read_watchpoint: | |
3221 | case bp_access_watchpoint: | |
3222 | if (bs->stop) | |
3223 | { | |
3224 | if (bs->print) | |
3225 | bs_class = wp_noisy; | |
3226 | else | |
3227 | bs_class = wp_silent; | |
3228 | } | |
3229 | else | |
53a5351d JM |
3230 | /* There was a watchpoint, but we're not stopping. |
3231 | This requires no further action. */ | |
c906108c SS |
3232 | bs_class = no_effect; |
3233 | break; | |
3234 | case bp_longjmp: | |
3235 | bs_class = long_jump; | |
3236 | break; | |
3237 | case bp_longjmp_resume: | |
3238 | bs_class = long_resume; | |
3239 | break; | |
3240 | case bp_step_resume: | |
3241 | if (bs->stop) | |
3242 | { | |
3243 | bs_class = step_resume; | |
3244 | } | |
3245 | else | |
3246 | /* It is for the wrong frame. */ | |
3247 | bs_class = bp_nostop; | |
3248 | break; | |
c906108c SS |
3249 | case bp_watchpoint_scope: |
3250 | bs_class = bp_nostop; | |
3251 | break; | |
c5aa993b JM |
3252 | case bp_shlib_event: |
3253 | bs_class = shlib_event; | |
3254 | break; | |
c4093a6a | 3255 | case bp_thread_event: |
1900040c | 3256 | case bp_overlay_event: |
c4093a6a JM |
3257 | bs_class = bp_nostop; |
3258 | break; | |
ce78b96d | 3259 | case bp_catchpoint: |
c5aa993b JM |
3260 | if (bs->stop) |
3261 | { | |
3262 | if (bs->print) | |
3263 | bs_class = bp_noisy; | |
3264 | else | |
3265 | bs_class = bp_silent; | |
3266 | } | |
3267 | else | |
53a5351d JM |
3268 | /* There was a catchpoint, but we're not stopping. |
3269 | This requires no further action. */ | |
c5aa993b JM |
3270 | bs_class = no_effect; |
3271 | break; | |
c906108c | 3272 | case bp_call_dummy: |
53a5351d JM |
3273 | /* Make sure the action is stop (silent or noisy), |
3274 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
3275 | bs_class = bp_silent; |
3276 | retval.call_dummy = 1; | |
3277 | break; | |
3278 | } | |
c5aa993b | 3279 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
3280 | } |
3281 | retval.main_action = current_action; | |
3282 | return retval; | |
3283 | } | |
3284 | ||
3285 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
3286 | without hardware support). This isn't related to a specific bpstat, | |
3287 | just to things like whether watchpoints are set. */ | |
3288 | ||
c5aa993b | 3289 | int |
fba45db2 | 3290 | bpstat_should_step (void) |
c906108c SS |
3291 | { |
3292 | struct breakpoint *b; | |
3293 | ALL_BREAKPOINTS (b) | |
468d015d | 3294 | if (breakpoint_enabled (b) && b->type == bp_watchpoint) |
3172dc30 | 3295 | return 1; |
c906108c SS |
3296 | return 0; |
3297 | } | |
3298 | ||
c906108c | 3299 | \f |
c5aa993b | 3300 | |
0d381245 VP |
3301 | static void print_breakpoint_location (struct breakpoint *b, |
3302 | struct bp_location *loc, | |
3303 | char *wrap_indent, | |
3304 | struct ui_stream *stb) | |
3305 | { | |
3306 | if (b->source_file) | |
3307 | { | |
3308 | struct symbol *sym | |
3309 | = find_pc_sect_function (loc->address, loc->section); | |
3310 | if (sym) | |
3311 | { | |
3312 | ui_out_text (uiout, "in "); | |
3313 | ui_out_field_string (uiout, "func", | |
3314 | SYMBOL_PRINT_NAME (sym)); | |
3315 | ui_out_wrap_hint (uiout, wrap_indent); | |
3316 | ui_out_text (uiout, " at "); | |
3317 | } | |
3318 | ui_out_field_string (uiout, "file", b->source_file); | |
3319 | ui_out_text (uiout, ":"); | |
3320 | ||
3321 | if (ui_out_is_mi_like_p (uiout)) | |
3322 | { | |
3323 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
3324 | char *fullname = symtab_to_fullname (sal.symtab); | |
3325 | ||
3326 | if (fullname) | |
3327 | ui_out_field_string (uiout, "fullname", fullname); | |
3328 | } | |
3329 | ||
3330 | ui_out_field_int (uiout, "line", b->line_number); | |
3331 | } | |
3332 | else if (!b->loc) | |
3333 | { | |
3334 | ui_out_field_string (uiout, "pending", b->addr_string); | |
3335 | } | |
3336 | else | |
3337 | { | |
3338 | print_address_symbolic (loc->address, stb->stream, demangle, ""); | |
3339 | ui_out_field_stream (uiout, "at", stb); | |
3340 | } | |
3341 | } | |
3342 | ||
c4093a6a | 3343 | /* Print B to gdb_stdout. */ |
c906108c | 3344 | static void |
0d381245 VP |
3345 | print_one_breakpoint_location (struct breakpoint *b, |
3346 | struct bp_location *loc, | |
3347 | int loc_number, | |
3348 | CORE_ADDR *last_addr) | |
c906108c | 3349 | { |
52f0bd74 AC |
3350 | struct command_line *l; |
3351 | struct symbol *sym; | |
c4093a6a JM |
3352 | struct ep_type_description |
3353 | { | |
3354 | enum bptype type; | |
3355 | char *description; | |
3356 | }; | |
3357 | static struct ep_type_description bptypes[] = | |
c906108c | 3358 | { |
c5aa993b JM |
3359 | {bp_none, "?deleted?"}, |
3360 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3361 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3362 | {bp_until, "until"}, |
3363 | {bp_finish, "finish"}, | |
3364 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3365 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3366 | {bp_read_watchpoint, "read watchpoint"}, |
3367 | {bp_access_watchpoint, "acc watchpoint"}, | |
3368 | {bp_longjmp, "longjmp"}, | |
3369 | {bp_longjmp_resume, "longjmp resume"}, | |
3370 | {bp_step_resume, "step resume"}, | |
c5aa993b JM |
3371 | {bp_watchpoint_scope, "watchpoint scope"}, |
3372 | {bp_call_dummy, "call dummy"}, | |
3373 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3374 | {bp_thread_event, "thread events"}, |
1900040c | 3375 | {bp_overlay_event, "overlay events"}, |
ce78b96d | 3376 | {bp_catchpoint, "catchpoint"}, |
c5aa993b | 3377 | }; |
c4093a6a | 3378 | |
c2c6d25f | 3379 | static char bpenables[] = "nynny"; |
c906108c | 3380 | char wrap_indent[80]; |
8b93c638 JM |
3381 | struct ui_stream *stb = ui_out_stream_new (uiout); |
3382 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 3383 | struct cleanup *bkpt_chain; |
c906108c | 3384 | |
0d381245 VP |
3385 | int header_of_multiple = 0; |
3386 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
3387 | struct value_print_options opts; |
3388 | ||
3389 | get_user_print_options (&opts); | |
0d381245 VP |
3390 | |
3391 | gdb_assert (!loc || loc_number != 0); | |
3392 | /* See comment in print_one_breakpoint concerning | |
3393 | treatment of breakpoints with single disabled | |
3394 | location. */ | |
3395 | if (loc == NULL | |
3396 | && (b->loc != NULL | |
3397 | && (b->loc->next != NULL || !b->loc->enabled))) | |
3398 | header_of_multiple = 1; | |
3399 | if (loc == NULL) | |
3400 | loc = b->loc; | |
3401 | ||
c4093a6a | 3402 | annotate_record (); |
3b31d625 | 3403 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
3404 | |
3405 | /* 1 */ | |
3406 | annotate_field (0); | |
0d381245 VP |
3407 | if (part_of_multiple) |
3408 | { | |
3409 | char *formatted; | |
0c6773c1 | 3410 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
3411 | ui_out_field_string (uiout, "number", formatted); |
3412 | xfree (formatted); | |
3413 | } | |
3414 | else | |
3415 | { | |
3416 | ui_out_field_int (uiout, "number", b->number); | |
3417 | } | |
c4093a6a JM |
3418 | |
3419 | /* 2 */ | |
3420 | annotate_field (1); | |
0d381245 VP |
3421 | if (part_of_multiple) |
3422 | ui_out_field_skip (uiout, "type"); | |
3423 | else | |
3424 | { | |
3425 | if (((int) b->type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3426 | || ((int) b->type != bptypes[(int) b->type].type)) | |
3427 | internal_error (__FILE__, __LINE__, | |
3428 | _("bptypes table does not describe type #%d."), | |
3429 | (int) b->type); | |
3430 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); | |
3431 | } | |
c4093a6a JM |
3432 | |
3433 | /* 3 */ | |
3434 | annotate_field (2); | |
0d381245 VP |
3435 | if (part_of_multiple) |
3436 | ui_out_field_skip (uiout, "disp"); | |
3437 | else | |
2cec12e5 | 3438 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 3439 | |
c4093a6a JM |
3440 | |
3441 | /* 4 */ | |
3442 | annotate_field (3); | |
0d381245 | 3443 | if (part_of_multiple) |
54e52265 | 3444 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 3445 | else |
54e52265 VP |
3446 | ui_out_field_fmt (uiout, "enabled", "%c", |
3447 | bpenables[(int) b->enable_state]); | |
3448 | ui_out_spaces (uiout, 2); | |
0d381245 | 3449 | |
c4093a6a JM |
3450 | |
3451 | /* 5 and 6 */ | |
3452 | strcpy (wrap_indent, " "); | |
79a45b7d | 3453 | if (opts.addressprint) |
75ac9d7b | 3454 | { |
17a912b6 | 3455 | if (gdbarch_addr_bit (current_gdbarch) <= 32) |
75ac9d7b MS |
3456 | strcat (wrap_indent, " "); |
3457 | else | |
3458 | strcat (wrap_indent, " "); | |
3459 | } | |
c906108c | 3460 | |
3086aeae | 3461 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 VP |
3462 | { |
3463 | /* Although the print_one can possibly print | |
3464 | all locations, calling it here is not likely | |
3465 | to get any nice result. So, make sure there's | |
3466 | just one location. */ | |
3467 | gdb_assert (b->loc == NULL || b->loc->next == NULL); | |
3468 | b->ops->print_one (b, last_addr); | |
3469 | } | |
3086aeae DJ |
3470 | else |
3471 | switch (b->type) | |
3472 | { | |
3473 | case bp_none: | |
3474 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 3475 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 3476 | break; |
c906108c | 3477 | |
3086aeae DJ |
3478 | case bp_watchpoint: |
3479 | case bp_hardware_watchpoint: | |
3480 | case bp_read_watchpoint: | |
3481 | case bp_access_watchpoint: | |
3482 | /* Field 4, the address, is omitted (which makes the columns | |
3483 | not line up too nicely with the headers, but the effect | |
3484 | is relatively readable). */ | |
79a45b7d | 3485 | if (opts.addressprint) |
3086aeae DJ |
3486 | ui_out_field_skip (uiout, "addr"); |
3487 | annotate_field (5); | |
3488 | print_expression (b->exp, stb->stream); | |
3489 | ui_out_field_stream (uiout, "what", stb); | |
3490 | break; | |
3491 | ||
3086aeae DJ |
3492 | case bp_breakpoint: |
3493 | case bp_hardware_breakpoint: | |
3494 | case bp_until: | |
3495 | case bp_finish: | |
3496 | case bp_longjmp: | |
3497 | case bp_longjmp_resume: | |
3498 | case bp_step_resume: | |
3086aeae DJ |
3499 | case bp_watchpoint_scope: |
3500 | case bp_call_dummy: | |
3501 | case bp_shlib_event: | |
3502 | case bp_thread_event: | |
3503 | case bp_overlay_event: | |
79a45b7d | 3504 | if (opts.addressprint) |
3086aeae DJ |
3505 | { |
3506 | annotate_field (4); | |
54e52265 | 3507 | if (header_of_multiple) |
0d381245 | 3508 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 3509 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 3510 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 3511 | else |
0d381245 | 3512 | ui_out_field_core_addr (uiout, "addr", loc->address); |
3086aeae DJ |
3513 | } |
3514 | annotate_field (5); | |
0d381245 VP |
3515 | if (!header_of_multiple) |
3516 | print_breakpoint_location (b, loc, wrap_indent, stb); | |
3517 | if (b->loc) | |
3518 | *last_addr = b->loc->address; | |
3086aeae DJ |
3519 | break; |
3520 | } | |
c906108c | 3521 | |
0d381245 | 3522 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 3523 | { |
8b93c638 JM |
3524 | /* FIXME: This seems to be redundant and lost here; see the |
3525 | "stop only in" line a little further down. */ | |
3526 | ui_out_text (uiout, " thread "); | |
3527 | ui_out_field_int (uiout, "thread", b->thread); | |
c4093a6a JM |
3528 | } |
3529 | ||
8b93c638 | 3530 | ui_out_text (uiout, "\n"); |
c4093a6a | 3531 | |
0d381245 | 3532 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
3533 | { |
3534 | annotate_field (6); | |
8b93c638 | 3535 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
3536 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
3537 | the frame ID. */ | |
d0a55772 | 3538 | ui_out_field_core_addr (uiout, "frame", b->frame_id.stack_addr); |
8b93c638 | 3539 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
3540 | } |
3541 | ||
0d381245 | 3542 | if (!part_of_multiple && b->cond_string && !ada_exception_catchpoint_p (b)) |
c4093a6a | 3543 | { |
f7f9143b JB |
3544 | /* We do not print the condition for Ada exception catchpoints |
3545 | because the condition is an internal implementation detail | |
3546 | that we do not want to expose to the user. */ | |
c4093a6a | 3547 | annotate_field (7); |
8b93c638 | 3548 | ui_out_text (uiout, "\tstop only if "); |
0101ce28 JJ |
3549 | ui_out_field_string (uiout, "cond", b->cond_string); |
3550 | ui_out_text (uiout, "\n"); | |
3551 | } | |
3552 | ||
0d381245 | 3553 | if (!part_of_multiple && b->thread != -1) |
c4093a6a JM |
3554 | { |
3555 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3556 | ui_out_text (uiout, "\tstop only in thread "); |
3557 | ui_out_field_int (uiout, "thread", b->thread); | |
3558 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3559 | } |
3560 | ||
63c715c6 | 3561 | if (!part_of_multiple && b->hit_count) |
c4093a6a JM |
3562 | { |
3563 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3564 | if (ep_is_catchpoint (b)) |
3565 | ui_out_text (uiout, "\tcatchpoint"); | |
3566 | else | |
3567 | ui_out_text (uiout, "\tbreakpoint"); | |
3568 | ui_out_text (uiout, " already hit "); | |
3569 | ui_out_field_int (uiout, "times", b->hit_count); | |
3570 | if (b->hit_count == 1) | |
3571 | ui_out_text (uiout, " time\n"); | |
3572 | else | |
3573 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
3574 | } |
3575 | ||
fb40c209 AC |
3576 | /* Output the count also if it is zero, but only if this is |
3577 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 3578 | if (ui_out_is_mi_like_p (uiout)) |
63c715c6 | 3579 | if (!part_of_multiple && b->hit_count == 0) |
fb40c209 | 3580 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 3581 | |
0d381245 | 3582 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
3583 | { |
3584 | annotate_field (8); | |
8b93c638 JM |
3585 | ui_out_text (uiout, "\tignore next "); |
3586 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3587 | ui_out_text (uiout, " hits\n"); | |
c4093a6a JM |
3588 | } |
3589 | ||
0d381245 | 3590 | if (!part_of_multiple && (l = b->commands)) |
c4093a6a | 3591 | { |
3b31d625 EZ |
3592 | struct cleanup *script_chain; |
3593 | ||
c4093a6a | 3594 | annotate_field (9); |
3b31d625 | 3595 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 3596 | print_command_lines (uiout, l, 4); |
3b31d625 | 3597 | do_cleanups (script_chain); |
c4093a6a | 3598 | } |
d24317b4 VP |
3599 | |
3600 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) | |
3601 | { | |
3602 | if (b->addr_string) | |
3603 | ui_out_field_string (uiout, "original-location", b->addr_string); | |
3604 | else if (b->exp_string) | |
3605 | ui_out_field_string (uiout, "original-location", b->exp_string); | |
3606 | } | |
3607 | ||
3b31d625 | 3608 | do_cleanups (bkpt_chain); |
8b93c638 | 3609 | do_cleanups (old_chain); |
c4093a6a | 3610 | } |
c5aa993b | 3611 | |
0d381245 VP |
3612 | static void |
3613 | print_one_breakpoint (struct breakpoint *b, | |
3614 | CORE_ADDR *last_addr) | |
3615 | { | |
3616 | print_one_breakpoint_location (b, NULL, 0, last_addr); | |
3617 | ||
3618 | /* If this breakpoint has custom print function, | |
3619 | it's already printed. Otherwise, print individual | |
3620 | locations, if any. */ | |
3621 | if (b->ops == NULL || b->ops->print_one == NULL) | |
3622 | { | |
3623 | /* If breakpoint has a single location that is | |
3624 | disabled, we print it as if it had | |
3625 | several locations, since otherwise it's hard to | |
3626 | represent "breakpoint enabled, location disabled" | |
a5606eee VP |
3627 | situation. |
3628 | Note that while hardware watchpoints have | |
3629 | several locations internally, that's no a property | |
3630 | exposed to user. */ | |
0d381245 | 3631 | if (b->loc |
a5606eee | 3632 | && !is_hardware_watchpoint (b) |
0d381245 | 3633 | && (b->loc->next || !b->loc->enabled) |
a5606eee | 3634 | && !ui_out_is_mi_like_p (uiout)) |
0d381245 VP |
3635 | { |
3636 | struct bp_location *loc; | |
3637 | int n = 1; | |
3638 | for (loc = b->loc; loc; loc = loc->next, ++n) | |
3639 | print_one_breakpoint_location (b, loc, n, last_addr); | |
3640 | } | |
3641 | } | |
3642 | } | |
3643 | ||
3644 | ||
c4093a6a JM |
3645 | struct captured_breakpoint_query_args |
3646 | { | |
3647 | int bnum; | |
3648 | }; | |
c5aa993b | 3649 | |
c4093a6a | 3650 | static int |
2b65245e | 3651 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
3652 | { |
3653 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 3654 | struct breakpoint *b; |
c4093a6a JM |
3655 | CORE_ADDR dummy_addr = 0; |
3656 | ALL_BREAKPOINTS (b) | |
3657 | { | |
3658 | if (args->bnum == b->number) | |
c5aa993b | 3659 | { |
c4093a6a JM |
3660 | print_one_breakpoint (b, &dummy_addr); |
3661 | return GDB_RC_OK; | |
c5aa993b | 3662 | } |
c4093a6a JM |
3663 | } |
3664 | return GDB_RC_NONE; | |
3665 | } | |
c5aa993b | 3666 | |
c4093a6a | 3667 | enum gdb_rc |
ce43223b | 3668 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, char **error_message) |
c4093a6a JM |
3669 | { |
3670 | struct captured_breakpoint_query_args args; | |
3671 | args.bnum = bnum; | |
3672 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3673 | an error. */ | |
b0b13bb4 DJ |
3674 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
3675 | error_message, RETURN_MASK_ALL) < 0) | |
3676 | return GDB_RC_FAIL; | |
3677 | else | |
3678 | return GDB_RC_OK; | |
c4093a6a | 3679 | } |
c5aa993b | 3680 | |
7f3b0473 AC |
3681 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
3682 | catchpoints, et.al.). */ | |
3683 | ||
3684 | static int | |
3685 | user_settable_breakpoint (const struct breakpoint *b) | |
3686 | { | |
3687 | return (b->type == bp_breakpoint | |
ce78b96d | 3688 | || b->type == bp_catchpoint |
7f3b0473 AC |
3689 | || b->type == bp_hardware_breakpoint |
3690 | || b->type == bp_watchpoint | |
3691 | || b->type == bp_read_watchpoint | |
3692 | || b->type == bp_access_watchpoint | |
3693 | || b->type == bp_hardware_watchpoint); | |
3694 | } | |
3695 | ||
3696 | /* Print information on user settable breakpoint (watchpoint, etc) | |
3697 | number BNUM. If BNUM is -1 print all user settable breakpoints. | |
3698 | If ALLFLAG is non-zero, include non- user settable breakpoints. */ | |
c906108c | 3699 | |
c4093a6a | 3700 | static void |
fba45db2 | 3701 | breakpoint_1 (int bnum, int allflag) |
c4093a6a | 3702 | { |
52f0bd74 | 3703 | struct breakpoint *b; |
c4093a6a | 3704 | CORE_ADDR last_addr = (CORE_ADDR) -1; |
7f3b0473 | 3705 | int nr_printable_breakpoints; |
3b31d625 | 3706 | struct cleanup *bkpttbl_chain; |
79a45b7d | 3707 | struct value_print_options opts; |
c4093a6a | 3708 | |
79a45b7d TT |
3709 | get_user_print_options (&opts); |
3710 | ||
7f3b0473 AC |
3711 | /* Compute the number of rows in the table. */ |
3712 | nr_printable_breakpoints = 0; | |
3713 | ALL_BREAKPOINTS (b) | |
3714 | if (bnum == -1 | |
3715 | || bnum == b->number) | |
3716 | { | |
3717 | if (allflag || user_settable_breakpoint (b)) | |
3718 | nr_printable_breakpoints++; | |
3719 | } | |
3720 | ||
79a45b7d | 3721 | if (opts.addressprint) |
3b31d625 EZ |
3722 | bkpttbl_chain |
3723 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
3724 | "BreakpointTable"); | |
8b93c638 | 3725 | else |
3b31d625 EZ |
3726 | bkpttbl_chain |
3727 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
3728 | "BreakpointTable"); | |
8b93c638 | 3729 | |
7f3b0473 | 3730 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
3731 | annotate_breakpoints_headers (); |
3732 | if (nr_printable_breakpoints > 0) | |
3733 | annotate_field (0); | |
0d381245 | 3734 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
3735 | if (nr_printable_breakpoints > 0) |
3736 | annotate_field (1); | |
3737 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
3738 | if (nr_printable_breakpoints > 0) | |
3739 | annotate_field (2); | |
3740 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
3741 | if (nr_printable_breakpoints > 0) | |
3742 | annotate_field (3); | |
54e52265 | 3743 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 3744 | if (opts.addressprint) |
7f3b0473 | 3745 | { |
d7faa9e7 AC |
3746 | if (nr_printable_breakpoints > 0) |
3747 | annotate_field (4); | |
17a912b6 | 3748 | if (gdbarch_addr_bit (current_gdbarch) <= 32) |
b25959ec | 3749 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3750 | else |
b25959ec | 3751 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3752 | } |
d7faa9e7 AC |
3753 | if (nr_printable_breakpoints > 0) |
3754 | annotate_field (5); | |
3755 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
3756 | ui_out_table_body (uiout); | |
3757 | if (nr_printable_breakpoints > 0) | |
3758 | annotate_breakpoints_table (); | |
7f3b0473 | 3759 | |
c4093a6a JM |
3760 | ALL_BREAKPOINTS (b) |
3761 | if (bnum == -1 | |
3762 | || bnum == b->number) | |
3763 | { | |
3764 | /* We only print out user settable breakpoints unless the | |
3765 | allflag is set. */ | |
7f3b0473 AC |
3766 | if (allflag || user_settable_breakpoint (b)) |
3767 | print_one_breakpoint (b, &last_addr); | |
c4093a6a JM |
3768 | } |
3769 | ||
3b31d625 | 3770 | do_cleanups (bkpttbl_chain); |
698384cd | 3771 | |
7f3b0473 | 3772 | if (nr_printable_breakpoints == 0) |
c906108c | 3773 | { |
8b93c638 JM |
3774 | if (bnum == -1) |
3775 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
3776 | else | |
3777 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
3778 | bnum); | |
c906108c SS |
3779 | } |
3780 | else | |
c4093a6a JM |
3781 | { |
3782 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
3783 | that a comparison of an unsigned with -1 is always false. */ | |
d1aa2f50 | 3784 | if (last_addr != (CORE_ADDR) -1 && !server_command) |
8b9b9e1a | 3785 | set_next_address (current_gdbarch, last_addr); |
c4093a6a | 3786 | } |
c906108c | 3787 | |
c4093a6a JM |
3788 | /* FIXME? Should this be moved up so that it is only called when |
3789 | there have been breakpoints? */ | |
c906108c SS |
3790 | annotate_breakpoints_table_end (); |
3791 | } | |
3792 | ||
c906108c | 3793 | static void |
fba45db2 | 3794 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
3795 | { |
3796 | int bnum = -1; | |
3797 | ||
3798 | if (bnum_exp) | |
bb518678 | 3799 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3800 | |
3801 | breakpoint_1 (bnum, 0); | |
3802 | } | |
3803 | ||
7a292a7a | 3804 | static void |
fba45db2 | 3805 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
3806 | { |
3807 | int bnum = -1; | |
3808 | ||
3809 | if (bnum_exp) | |
bb518678 | 3810 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3811 | |
3812 | breakpoint_1 (bnum, 1); | |
3813 | } | |
3814 | ||
0d381245 | 3815 | static int |
714835d5 UW |
3816 | breakpoint_has_pc (struct breakpoint *b, |
3817 | CORE_ADDR pc, struct obj_section *section) | |
0d381245 VP |
3818 | { |
3819 | struct bp_location *bl = b->loc; | |
3820 | for (; bl; bl = bl->next) | |
3821 | { | |
3822 | if (bl->address == pc | |
3823 | && (!overlay_debugging || bl->section == section)) | |
3824 | return 1; | |
3825 | } | |
3826 | return 0; | |
3827 | } | |
3828 | ||
c906108c SS |
3829 | /* Print a message describing any breakpoints set at PC. */ |
3830 | ||
3831 | static void | |
714835d5 UW |
3832 | describe_other_breakpoints (CORE_ADDR pc, struct obj_section *section, |
3833 | int thread) | |
c906108c | 3834 | { |
52f0bd74 AC |
3835 | int others = 0; |
3836 | struct breakpoint *b; | |
c906108c SS |
3837 | |
3838 | ALL_BREAKPOINTS (b) | |
0d381245 | 3839 | others += breakpoint_has_pc (b, pc, section); |
c906108c SS |
3840 | if (others > 0) |
3841 | { | |
a3f17187 AC |
3842 | if (others == 1) |
3843 | printf_filtered (_("Note: breakpoint ")); | |
3844 | else /* if (others == ???) */ | |
3845 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 3846 | ALL_BREAKPOINTS (b) |
0d381245 VP |
3847 | if (breakpoint_has_pc (b, pc, section)) |
3848 | { | |
3849 | others--; | |
3850 | printf_filtered ("%d", b->number); | |
3851 | if (b->thread == -1 && thread != -1) | |
3852 | printf_filtered (" (all threads)"); | |
3853 | else if (b->thread != -1) | |
3854 | printf_filtered (" (thread %d)", b->thread); | |
3855 | printf_filtered ("%s%s ", | |
3856 | ((b->enable_state == bp_disabled || | |
3857 | b->enable_state == bp_call_disabled) | |
3858 | ? " (disabled)" | |
3859 | : b->enable_state == bp_permanent | |
3860 | ? " (permanent)" | |
3861 | : ""), | |
3862 | (others > 1) ? "," | |
3863 | : ((others == 1) ? " and" : "")); | |
3864 | } | |
a3f17187 | 3865 | printf_filtered (_("also set at pc ")); |
ed49a04f | 3866 | fputs_filtered (paddress (pc), gdb_stdout); |
c906108c SS |
3867 | printf_filtered (".\n"); |
3868 | } | |
3869 | } | |
3870 | \f | |
3871 | /* Set the default place to put a breakpoint | |
3872 | for the `break' command with no arguments. */ | |
3873 | ||
3874 | void | |
fba45db2 KB |
3875 | set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, |
3876 | int line) | |
c906108c SS |
3877 | { |
3878 | default_breakpoint_valid = valid; | |
3879 | default_breakpoint_address = addr; | |
3880 | default_breakpoint_symtab = symtab; | |
3881 | default_breakpoint_line = line; | |
3882 | } | |
3883 | ||
e4f237da KB |
3884 | /* Return true iff it is meaningful to use the address member of |
3885 | BPT. For some breakpoint types, the address member is irrelevant | |
3886 | and it makes no sense to attempt to compare it to other addresses | |
3887 | (or use it for any other purpose either). | |
3888 | ||
3889 | More specifically, each of the following breakpoint types will always | |
3890 | have a zero valued address and we don't want check_duplicates() to mark | |
3891 | breakpoints of any of these types to be a duplicate of an actual | |
3892 | breakpoint at address zero: | |
3893 | ||
3894 | bp_watchpoint | |
3895 | bp_hardware_watchpoint | |
3896 | bp_read_watchpoint | |
3897 | bp_access_watchpoint | |
fe798b75 | 3898 | bp_catchpoint */ |
e4f237da KB |
3899 | |
3900 | static int | |
3901 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
3902 | { | |
3903 | enum bptype type = bpt->type; | |
3904 | ||
3905 | return (type != bp_watchpoint | |
3906 | && type != bp_hardware_watchpoint | |
3907 | && type != bp_read_watchpoint | |
3908 | && type != bp_access_watchpoint | |
fe798b75 | 3909 | && type != bp_catchpoint); |
e4f237da KB |
3910 | } |
3911 | ||
9f60f21b | 3912 | /* Rescan breakpoints at the same address and section as BPT, |
c906108c | 3913 | marking the first one as "first" and any others as "duplicates". |
c2c6d25f | 3914 | This is so that the bpt instruction is only inserted once. |
9f60f21b JB |
3915 | If we have a permanent breakpoint at the same place as BPT, make |
3916 | that one the official one, and the rest as duplicates. */ | |
c906108c SS |
3917 | |
3918 | static void | |
714835d5 | 3919 | check_duplicates_for (CORE_ADDR address, struct obj_section *section) |
c906108c | 3920 | { |
075f6582 | 3921 | struct bp_location *b; |
52f0bd74 | 3922 | int count = 0; |
075f6582 | 3923 | struct bp_location *perm_bp = 0; |
c906108c | 3924 | |
075f6582 DJ |
3925 | ALL_BP_LOCATIONS (b) |
3926 | if (b->owner->enable_state != bp_disabled | |
075f6582 | 3927 | && b->owner->enable_state != bp_call_disabled |
0d381245 VP |
3928 | && b->enabled |
3929 | && !b->shlib_disabled | |
075f6582 DJ |
3930 | && b->address == address /* address / overlay match */ |
3931 | && (!overlay_debugging || b->section == section) | |
3932 | && breakpoint_address_is_meaningful (b->owner)) | |
c5aa993b | 3933 | { |
c2c6d25f | 3934 | /* Have we found a permanent breakpoint? */ |
075f6582 | 3935 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
3936 | { |
3937 | perm_bp = b; | |
3938 | break; | |
3939 | } | |
3940 | ||
c5aa993b | 3941 | count++; |
075f6582 | 3942 | b->duplicate = count > 1; |
c5aa993b | 3943 | } |
c2c6d25f JM |
3944 | |
3945 | /* If we found a permanent breakpoint at this address, go over the | |
3946 | list again and declare all the other breakpoints there to be the | |
3947 | duplicates. */ | |
3948 | if (perm_bp) | |
3949 | { | |
075f6582 | 3950 | perm_bp->duplicate = 0; |
c2c6d25f JM |
3951 | |
3952 | /* Permanent breakpoint should always be inserted. */ | |
075f6582 | 3953 | if (! perm_bp->inserted) |
8e65ff28 | 3954 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 AC |
3955 | _("allegedly permanent breakpoint is not " |
3956 | "actually inserted")); | |
c2c6d25f | 3957 | |
075f6582 | 3958 | ALL_BP_LOCATIONS (b) |
c2c6d25f JM |
3959 | if (b != perm_bp) |
3960 | { | |
075f6582 | 3961 | if (b->owner->enable_state != bp_disabled |
075f6582 | 3962 | && b->owner->enable_state != bp_call_disabled |
0d381245 | 3963 | && b->enabled && !b->shlib_disabled |
075f6582 DJ |
3964 | && b->address == address /* address / overlay match */ |
3965 | && (!overlay_debugging || b->section == section) | |
3966 | && breakpoint_address_is_meaningful (b->owner)) | |
3967 | { | |
3968 | if (b->inserted) | |
3969 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 AC |
3970 | _("another breakpoint was inserted on top of " |
3971 | "a permanent breakpoint")); | |
075f6582 DJ |
3972 | |
3973 | b->duplicate = 1; | |
3974 | } | |
c2c6d25f JM |
3975 | } |
3976 | } | |
c906108c SS |
3977 | } |
3978 | ||
0d381245 VP |
3979 | static void |
3980 | check_duplicates (struct breakpoint *bpt) | |
3981 | { | |
3982 | struct bp_location *bl = bpt->loc; | |
3983 | ||
3984 | if (! breakpoint_address_is_meaningful (bpt)) | |
3985 | return; | |
3986 | ||
3987 | for (; bl; bl = bl->next) | |
3988 | check_duplicates_for (bl->address, bl->section); | |
3989 | } | |
3990 | ||
76897487 KB |
3991 | static void |
3992 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
3993 | int bnum, int have_bnum) | |
3994 | { | |
3995 | char astr1[40]; | |
3996 | char astr2[40]; | |
3997 | ||
bb599908 PH |
3998 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
3999 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 4000 | if (have_bnum) |
8a3fe4f8 | 4001 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
4002 | bnum, astr1, astr2); |
4003 | else | |
8a3fe4f8 | 4004 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
4005 | } |
4006 | ||
4007 | /* Adjust a breakpoint's address to account for architectural constraints | |
4008 | on breakpoint placement. Return the adjusted address. Note: Very | |
4009 | few targets require this kind of adjustment. For most targets, | |
4010 | this function is simply the identity function. */ | |
4011 | ||
4012 | static CORE_ADDR | |
88f7da05 | 4013 | adjust_breakpoint_address (CORE_ADDR bpaddr, enum bptype bptype) |
76897487 KB |
4014 | { |
4015 | if (!gdbarch_adjust_breakpoint_address_p (current_gdbarch)) | |
4016 | { | |
4017 | /* Very few targets need any kind of breakpoint adjustment. */ | |
4018 | return bpaddr; | |
4019 | } | |
88f7da05 KB |
4020 | else if (bptype == bp_watchpoint |
4021 | || bptype == bp_hardware_watchpoint | |
4022 | || bptype == bp_read_watchpoint | |
4023 | || bptype == bp_access_watchpoint | |
fe798b75 | 4024 | || bptype == bp_catchpoint) |
88f7da05 KB |
4025 | { |
4026 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
4027 | have their addresses modified. */ | |
4028 | return bpaddr; | |
4029 | } | |
76897487 KB |
4030 | else |
4031 | { | |
4032 | CORE_ADDR adjusted_bpaddr; | |
4033 | ||
4034 | /* Some targets have architectural constraints on the placement | |
4035 | of breakpoint instructions. Obtain the adjusted address. */ | |
4036 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (current_gdbarch, | |
4037 | bpaddr); | |
4038 | ||
4039 | /* An adjusted breakpoint address can significantly alter | |
4040 | a user's expectations. Print a warning if an adjustment | |
4041 | is required. */ | |
4042 | if (adjusted_bpaddr != bpaddr) | |
4043 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
4044 | ||
4045 | return adjusted_bpaddr; | |
4046 | } | |
4047 | } | |
4048 | ||
7cc221ef DJ |
4049 | /* Allocate a struct bp_location. */ |
4050 | ||
26bb91f3 | 4051 | static struct bp_location * |
39d61571 | 4052 | allocate_bp_location (struct breakpoint *bpt) |
7cc221ef DJ |
4053 | { |
4054 | struct bp_location *loc, *loc_p; | |
4055 | ||
4056 | loc = xmalloc (sizeof (struct bp_location)); | |
4057 | memset (loc, 0, sizeof (*loc)); | |
4058 | ||
e049a4b5 | 4059 | loc->owner = bpt; |
511a6cd4 | 4060 | loc->cond = NULL; |
0d381245 VP |
4061 | loc->shlib_disabled = 0; |
4062 | loc->enabled = 1; | |
e049a4b5 | 4063 | |
39d61571 | 4064 | switch (bpt->type) |
e049a4b5 DJ |
4065 | { |
4066 | case bp_breakpoint: | |
4067 | case bp_until: | |
4068 | case bp_finish: | |
4069 | case bp_longjmp: | |
4070 | case bp_longjmp_resume: | |
4071 | case bp_step_resume: | |
e049a4b5 DJ |
4072 | case bp_watchpoint_scope: |
4073 | case bp_call_dummy: | |
4074 | case bp_shlib_event: | |
4075 | case bp_thread_event: | |
4076 | case bp_overlay_event: | |
e049a4b5 DJ |
4077 | loc->loc_type = bp_loc_software_breakpoint; |
4078 | break; | |
4079 | case bp_hardware_breakpoint: | |
4080 | loc->loc_type = bp_loc_hardware_breakpoint; | |
4081 | break; | |
4082 | case bp_hardware_watchpoint: | |
4083 | case bp_read_watchpoint: | |
4084 | case bp_access_watchpoint: | |
4085 | loc->loc_type = bp_loc_hardware_watchpoint; | |
4086 | break; | |
4087 | case bp_watchpoint: | |
ce78b96d | 4088 | case bp_catchpoint: |
e049a4b5 DJ |
4089 | loc->loc_type = bp_loc_other; |
4090 | break; | |
4091 | default: | |
e2e0b3e5 | 4092 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
4093 | } |
4094 | ||
7cc221ef DJ |
4095 | return loc; |
4096 | } | |
4097 | ||
fe3f5fa8 VP |
4098 | static void free_bp_location (struct bp_location *loc) |
4099 | { | |
4100 | if (loc->cond) | |
4101 | xfree (loc->cond); | |
74960c60 VP |
4102 | |
4103 | if (loc->function_name) | |
4104 | xfree (loc->function_name); | |
4105 | ||
fe3f5fa8 VP |
4106 | xfree (loc); |
4107 | } | |
4108 | ||
0d381245 VP |
4109 | /* Helper to set_raw_breakpoint below. Creates a breakpoint |
4110 | that has type BPTYPE and has no locations as yet. */ | |
c906108c | 4111 | |
c40e75cd | 4112 | static struct breakpoint * |
0d381245 | 4113 | set_raw_breakpoint_without_location (enum bptype bptype) |
c906108c | 4114 | { |
52f0bd74 | 4115 | struct breakpoint *b, *b1; |
c906108c SS |
4116 | |
4117 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4118 | memset (b, 0, sizeof (*b)); | |
2219d63c | 4119 | |
4d28f7a8 | 4120 | b->type = bptype; |
c906108c SS |
4121 | b->language = current_language->la_language; |
4122 | b->input_radix = input_radix; | |
4123 | b->thread = -1; | |
b5de0fa7 | 4124 | b->enable_state = bp_enabled; |
c906108c SS |
4125 | b->next = 0; |
4126 | b->silent = 0; | |
4127 | b->ignore_count = 0; | |
4128 | b->commands = NULL; | |
818dd999 | 4129 | b->frame_id = null_frame_id; |
3a3e9ee3 | 4130 | b->forked_inferior_pid = null_ptid; |
c906108c | 4131 | b->exec_pathname = NULL; |
3086aeae | 4132 | b->ops = NULL; |
0d381245 | 4133 | b->condition_not_parsed = 0; |
c906108c SS |
4134 | |
4135 | /* Add this breakpoint to the end of the chain | |
4136 | so that a list of breakpoints will come out in order | |
4137 | of increasing numbers. */ | |
4138 | ||
4139 | b1 = breakpoint_chain; | |
4140 | if (b1 == 0) | |
4141 | breakpoint_chain = b; | |
4142 | else | |
4143 | { | |
4144 | while (b1->next) | |
4145 | b1 = b1->next; | |
4146 | b1->next = b; | |
4147 | } | |
0d381245 VP |
4148 | return b; |
4149 | } | |
4150 | ||
4151 | /* Initialize loc->function_name. */ | |
4152 | static void | |
4153 | set_breakpoint_location_function (struct bp_location *loc) | |
4154 | { | |
4155 | if (loc->owner->type == bp_breakpoint | |
4156 | || loc->owner->type == bp_hardware_breakpoint) | |
4157 | { | |
4158 | find_pc_partial_function (loc->address, &(loc->function_name), | |
4159 | NULL, NULL); | |
4160 | if (loc->function_name) | |
4161 | loc->function_name = xstrdup (loc->function_name); | |
4162 | } | |
4163 | } | |
4164 | ||
4165 | /* set_raw_breakpoint is a low level routine for allocating and | |
4166 | partially initializing a breakpoint of type BPTYPE. The newly | |
4167 | created breakpoint's address, section, source file name, and line | |
4168 | number are provided by SAL. The newly created and partially | |
4169 | initialized breakpoint is added to the breakpoint chain and | |
4170 | is also returned as the value of this function. | |
4171 | ||
4172 | It is expected that the caller will complete the initialization of | |
4173 | the newly created breakpoint struct as well as output any status | |
4174 | information regarding the creation of a new breakpoint. In | |
4175 | particular, set_raw_breakpoint does NOT set the breakpoint | |
4176 | number! Care should be taken to not allow an error to occur | |
4177 | prior to completing the initialization of the breakpoint. If this | |
4178 | should happen, a bogus breakpoint will be left on the chain. */ | |
4179 | ||
4180 | struct breakpoint * | |
4181 | set_raw_breakpoint (struct symtab_and_line sal, enum bptype bptype) | |
4182 | { | |
4183 | struct breakpoint *b = set_raw_breakpoint_without_location (bptype); | |
4184 | CORE_ADDR adjusted_address; | |
4185 | ||
4186 | /* Adjust the breakpoint's address prior to allocating a location. | |
4187 | Once we call allocate_bp_location(), that mostly uninitialized | |
4188 | location will be placed on the location chain. Adjustment of the | |
8defab1a | 4189 | breakpoint may cause target_read_memory() to be called and we do |
0d381245 VP |
4190 | not want its scan of the location chain to find a breakpoint and |
4191 | location that's only been partially initialized. */ | |
39d61571 | 4192 | adjusted_address = adjust_breakpoint_address (sal.pc, b->type); |
0d381245 | 4193 | |
39d61571 | 4194 | b->loc = allocate_bp_location (b); |
0d381245 VP |
4195 | b->loc->requested_address = sal.pc; |
4196 | b->loc->address = adjusted_address; | |
4197 | ||
4198 | if (sal.symtab == NULL) | |
4199 | b->source_file = NULL; | |
4200 | else | |
4201 | b->source_file = savestring (sal.symtab->filename, | |
4202 | strlen (sal.symtab->filename)); | |
4203 | b->loc->section = sal.section; | |
4204 | b->line_number = sal.line; | |
4205 | ||
4206 | set_breakpoint_location_function (b->loc); | |
c906108c | 4207 | |
c906108c SS |
4208 | breakpoints_changed (); |
4209 | ||
4210 | return b; | |
4211 | } | |
4212 | ||
c2c6d25f JM |
4213 | |
4214 | /* Note that the breakpoint object B describes a permanent breakpoint | |
4215 | instruction, hard-wired into the inferior's code. */ | |
4216 | void | |
4217 | make_breakpoint_permanent (struct breakpoint *b) | |
4218 | { | |
0d381245 | 4219 | struct bp_location *bl; |
b5de0fa7 | 4220 | b->enable_state = bp_permanent; |
c2c6d25f | 4221 | |
0d381245 VP |
4222 | /* By definition, permanent breakpoints are already present in the code. |
4223 | Mark all locations as inserted. For now, make_breakpoint_permanent | |
4224 | is called in just one place, so it's hard to say if it's reasonable | |
4225 | to have permanent breakpoint with multiple locations or not, | |
4226 | but it's easy to implmement. */ | |
4227 | for (bl = b->loc; bl; bl = bl->next) | |
4228 | bl->inserted = 1; | |
c2c6d25f JM |
4229 | } |
4230 | ||
1900040c MS |
4231 | static struct breakpoint * |
4232 | create_internal_breakpoint (CORE_ADDR address, enum bptype type) | |
4233 | { | |
4234 | static int internal_breakpoint_number = -1; | |
4235 | struct symtab_and_line sal; | |
4236 | struct breakpoint *b; | |
4237 | ||
fe39c653 | 4238 | init_sal (&sal); /* initialize to zeroes */ |
1900040c MS |
4239 | |
4240 | sal.pc = address; | |
4241 | sal.section = find_pc_overlay (sal.pc); | |
4242 | ||
4243 | b = set_raw_breakpoint (sal, type); | |
4244 | b->number = internal_breakpoint_number--; | |
4245 | b->disposition = disp_donttouch; | |
4246 | ||
4247 | return b; | |
4248 | } | |
4249 | ||
c906108c SS |
4250 | |
4251 | static void | |
fba45db2 | 4252 | create_longjmp_breakpoint (char *func_name) |
c906108c | 4253 | { |
1900040c | 4254 | struct minimal_symbol *m; |
c906108c | 4255 | |
611c83ae PA |
4256 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
4257 | return; | |
4258 | set_momentary_breakpoint_at_pc (SYMBOL_VALUE_ADDRESS (m), bp_longjmp); | |
b60e7edf | 4259 | update_global_location_list (1); |
c906108c SS |
4260 | } |
4261 | ||
53a5351d JM |
4262 | /* Call this routine when stepping and nexting to enable a breakpoint |
4263 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
4264 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
4265 | ||
4266 | void | |
611c83ae | 4267 | set_longjmp_breakpoint (void) |
c906108c | 4268 | { |
611c83ae | 4269 | if (gdbarch_get_longjmp_target_p (current_gdbarch)) |
c5aa993b | 4270 | { |
611c83ae PA |
4271 | create_longjmp_breakpoint ("longjmp"); |
4272 | create_longjmp_breakpoint ("_longjmp"); | |
4273 | create_longjmp_breakpoint ("siglongjmp"); | |
4274 | create_longjmp_breakpoint ("_siglongjmp"); | |
c5aa993b | 4275 | } |
c906108c SS |
4276 | } |
4277 | ||
611c83ae | 4278 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 4279 | void |
611c83ae | 4280 | delete_longjmp_breakpoint (int thread) |
c906108c | 4281 | { |
611c83ae | 4282 | struct breakpoint *b, *temp; |
c906108c | 4283 | |
611c83ae PA |
4284 | ALL_BREAKPOINTS_SAFE (b, temp) |
4285 | if (b->type == bp_longjmp) | |
4286 | { | |
4287 | if (b->thread == thread) | |
4288 | delete_breakpoint (b); | |
4289 | } | |
c906108c SS |
4290 | } |
4291 | ||
1900040c | 4292 | static void |
25db0f1b | 4293 | create_overlay_event_breakpoint_1 (char *func_name, struct objfile *objfile) |
1900040c MS |
4294 | { |
4295 | struct breakpoint *b; | |
4296 | struct minimal_symbol *m; | |
4297 | ||
25db0f1b | 4298 | if ((m = lookup_minimal_symbol_text (func_name, objfile)) == NULL) |
1900040c MS |
4299 | return; |
4300 | ||
4301 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), | |
4302 | bp_overlay_event); | |
4303 | b->addr_string = xstrdup (func_name); | |
4304 | ||
4305 | if (overlay_debugging == ovly_auto) | |
c02f5703 MS |
4306 | { |
4307 | b->enable_state = bp_enabled; | |
4308 | overlay_events_enabled = 1; | |
4309 | } | |
1900040c | 4310 | else |
c02f5703 MS |
4311 | { |
4312 | b->enable_state = bp_disabled; | |
4313 | overlay_events_enabled = 0; | |
4314 | } | |
b60e7edf | 4315 | update_global_location_list (1); |
1900040c MS |
4316 | } |
4317 | ||
25db0f1b UW |
4318 | static void |
4319 | create_overlay_event_breakpoint (char *func_name) | |
4320 | { | |
4321 | struct objfile *objfile; | |
4322 | ALL_OBJFILES (objfile) | |
4323 | create_overlay_event_breakpoint_1 (func_name, objfile); | |
4324 | } | |
4325 | ||
1900040c MS |
4326 | void |
4327 | enable_overlay_breakpoints (void) | |
4328 | { | |
52f0bd74 | 4329 | struct breakpoint *b; |
1900040c MS |
4330 | |
4331 | ALL_BREAKPOINTS (b) | |
4332 | if (b->type == bp_overlay_event) | |
4333 | { | |
4334 | b->enable_state = bp_enabled; | |
b60e7edf | 4335 | update_global_location_list (1); |
c02f5703 | 4336 | overlay_events_enabled = 1; |
1900040c MS |
4337 | } |
4338 | } | |
4339 | ||
4340 | void | |
4341 | disable_overlay_breakpoints (void) | |
4342 | { | |
52f0bd74 | 4343 | struct breakpoint *b; |
1900040c MS |
4344 | |
4345 | ALL_BREAKPOINTS (b) | |
4346 | if (b->type == bp_overlay_event) | |
4347 | { | |
4348 | b->enable_state = bp_disabled; | |
b60e7edf | 4349 | update_global_location_list (0); |
c02f5703 | 4350 | overlay_events_enabled = 0; |
1900040c MS |
4351 | } |
4352 | } | |
4353 | ||
c4093a6a | 4354 | struct breakpoint * |
fba45db2 | 4355 | create_thread_event_breakpoint (CORE_ADDR address) |
c4093a6a JM |
4356 | { |
4357 | struct breakpoint *b; | |
c4093a6a | 4358 | |
1900040c | 4359 | b = create_internal_breakpoint (address, bp_thread_event); |
c4093a6a | 4360 | |
b5de0fa7 | 4361 | b->enable_state = bp_enabled; |
c4093a6a | 4362 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
b435e160 | 4363 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); |
c4093a6a | 4364 | |
b60e7edf | 4365 | update_global_location_list_nothrow (1); |
74960c60 | 4366 | |
c4093a6a JM |
4367 | return b; |
4368 | } | |
4369 | ||
4370 | void | |
4371 | remove_thread_event_breakpoints (void) | |
4372 | { | |
4373 | struct breakpoint *b, *temp; | |
4374 | ||
4375 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4376 | if (b->type == bp_thread_event) | |
4377 | delete_breakpoint (b); | |
4378 | } | |
4379 | ||
0101ce28 JJ |
4380 | struct captured_parse_breakpoint_args |
4381 | { | |
4382 | char **arg_p; | |
4383 | struct symtabs_and_lines *sals_p; | |
4384 | char ***addr_string_p; | |
4385 | int *not_found_ptr; | |
4386 | }; | |
4387 | ||
4388 | struct lang_and_radix | |
4389 | { | |
4390 | enum language lang; | |
4391 | int radix; | |
4392 | }; | |
4393 | ||
0101ce28 | 4394 | |
cae688ec JJ |
4395 | void |
4396 | remove_solib_event_breakpoints (void) | |
4397 | { | |
4398 | struct breakpoint *b, *temp; | |
4399 | ||
4400 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4401 | if (b->type == bp_shlib_event) | |
4402 | delete_breakpoint (b); | |
4403 | } | |
4404 | ||
4405 | struct breakpoint * | |
4406 | create_solib_event_breakpoint (CORE_ADDR address) | |
4407 | { | |
4408 | struct breakpoint *b; | |
4409 | ||
4410 | b = create_internal_breakpoint (address, bp_shlib_event); | |
b60e7edf | 4411 | update_global_location_list_nothrow (1); |
cae688ec JJ |
4412 | return b; |
4413 | } | |
4414 | ||
4415 | /* Disable any breakpoints that are on code in shared libraries. Only | |
4416 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4417 | ||
4418 | void | |
cb851954 | 4419 | disable_breakpoints_in_shlibs (void) |
cae688ec | 4420 | { |
0d381245 | 4421 | struct bp_location *loc; |
cae688ec JJ |
4422 | int disabled_shlib_breaks = 0; |
4423 | ||
0d381245 | 4424 | ALL_BP_LOCATIONS (loc) |
cae688ec | 4425 | { |
0d381245 VP |
4426 | struct breakpoint *b = loc->owner; |
4427 | /* We apply the check to all breakpoints, including disabled | |
4428 | for those with loc->duplicate set. This is so that when breakpoint | |
4429 | becomes enabled, or the duplicate is removed, gdb will try to insert | |
4430 | all breakpoints. If we don't set shlib_disabled here, we'll try | |
4431 | to insert those breakpoints and fail. */ | |
a77053c2 | 4432 | if (((b->type == bp_breakpoint) || (b->type == bp_hardware_breakpoint)) |
0d381245 | 4433 | && !loc->shlib_disabled |
a77053c2 | 4434 | #ifdef PC_SOLIB |
0d381245 | 4435 | && PC_SOLIB (loc->address) |
a77053c2 | 4436 | #else |
0d381245 | 4437 | && solib_address (loc->address) |
a77053c2 MK |
4438 | #endif |
4439 | ) | |
0d381245 VP |
4440 | { |
4441 | loc->shlib_disabled = 1; | |
4442 | } | |
cae688ec JJ |
4443 | } |
4444 | } | |
4445 | ||
84acb35a JJ |
4446 | /* Disable any breakpoints that are in in an unloaded shared library. Only |
4447 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4448 | ||
75149521 | 4449 | static void |
84acb35a JJ |
4450 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
4451 | { | |
0d381245 | 4452 | struct bp_location *loc; |
84acb35a JJ |
4453 | int disabled_shlib_breaks = 0; |
4454 | ||
0d381245 | 4455 | ALL_BP_LOCATIONS (loc) |
84acb35a | 4456 | { |
0d381245 VP |
4457 | struct breakpoint *b = loc->owner; |
4458 | if ((loc->loc_type == bp_loc_hardware_breakpoint | |
4459 | || loc->loc_type == bp_loc_software_breakpoint) | |
4460 | && !loc->shlib_disabled) | |
84acb35a | 4461 | { |
a77053c2 | 4462 | #ifdef PC_SOLIB |
0d381245 | 4463 | char *so_name = PC_SOLIB (loc->address); |
a77053c2 | 4464 | #else |
0d381245 | 4465 | char *so_name = solib_address (loc->address); |
a77053c2 MK |
4466 | #endif |
4467 | if (so_name && !strcmp (so_name, solib->so_name)) | |
84acb35a | 4468 | { |
0d381245 | 4469 | loc->shlib_disabled = 1; |
84acb35a JJ |
4470 | /* At this point, we cannot rely on remove_breakpoint |
4471 | succeeding so we must mark the breakpoint as not inserted | |
4472 | to prevent future errors occurring in remove_breakpoints. */ | |
0d381245 | 4473 | loc->inserted = 0; |
84acb35a JJ |
4474 | if (!disabled_shlib_breaks) |
4475 | { | |
4476 | target_terminal_ours_for_output (); | |
8a3fe4f8 | 4477 | warning (_("Temporarily disabling breakpoints for unloaded shared library \"%s\""), |
84acb35a JJ |
4478 | so_name); |
4479 | } | |
4480 | disabled_shlib_breaks = 1; | |
4481 | } | |
4482 | } | |
4483 | } | |
84acb35a JJ |
4484 | } |
4485 | ||
ce78b96d JB |
4486 | /* FORK & VFORK catchpoints. */ |
4487 | ||
4488 | /* Implement the "insert" breakpoint_ops method for fork catchpoints. */ | |
4489 | ||
c906108c | 4490 | static void |
ce78b96d JB |
4491 | insert_catch_fork (struct breakpoint *b) |
4492 | { | |
4493 | target_insert_fork_catchpoint (PIDGET (inferior_ptid)); | |
4494 | } | |
4495 | ||
4496 | /* Implement the "remove" breakpoint_ops method for fork catchpoints. */ | |
4497 | ||
4498 | static int | |
4499 | remove_catch_fork (struct breakpoint *b) | |
4500 | { | |
4501 | return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); | |
4502 | } | |
4503 | ||
4504 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
4505 | catchpoints. */ | |
4506 | ||
4507 | static int | |
4508 | breakpoint_hit_catch_fork (struct breakpoint *b) | |
4509 | { | |
4510 | return inferior_has_forked (inferior_ptid, &b->forked_inferior_pid); | |
4511 | } | |
4512 | ||
4513 | /* Implement the "print_it" breakpoint_ops method for fork catchpoints. */ | |
4514 | ||
4515 | static enum print_stop_action | |
4516 | print_it_catch_fork (struct breakpoint *b) | |
4517 | { | |
4518 | annotate_catchpoint (b->number); | |
4519 | printf_filtered (_("\nCatchpoint %d (forked process %d), "), | |
4520 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
4521 | return PRINT_SRC_AND_LOC; | |
4522 | } | |
4523 | ||
4524 | /* Implement the "print_one" breakpoint_ops method for fork catchpoints. */ | |
4525 | ||
4526 | static void | |
4527 | print_one_catch_fork (struct breakpoint *b, CORE_ADDR *last_addr) | |
4528 | { | |
79a45b7d TT |
4529 | struct value_print_options opts; |
4530 | ||
4531 | get_user_print_options (&opts); | |
4532 | ||
ce78b96d JB |
4533 | /* Field 4, the address, is omitted (which makes the columns |
4534 | not line up too nicely with the headers, but the effect | |
4535 | is relatively readable). */ | |
79a45b7d | 4536 | if (opts.addressprint) |
ce78b96d JB |
4537 | ui_out_field_skip (uiout, "addr"); |
4538 | annotate_field (5); | |
4539 | ui_out_text (uiout, "fork"); | |
4540 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
4541 | { | |
4542 | ui_out_text (uiout, ", process "); | |
4543 | ui_out_field_int (uiout, "what", | |
4544 | ptid_get_pid (b->forked_inferior_pid)); | |
4545 | ui_out_spaces (uiout, 1); | |
4546 | } | |
4547 | } | |
4548 | ||
4549 | /* Implement the "print_mention" breakpoint_ops method for fork | |
4550 | catchpoints. */ | |
4551 | ||
4552 | static void | |
4553 | print_mention_catch_fork (struct breakpoint *b) | |
4554 | { | |
4555 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
4556 | } | |
4557 | ||
4558 | /* The breakpoint_ops structure to be used in fork catchpoints. */ | |
4559 | ||
4560 | static struct breakpoint_ops catch_fork_breakpoint_ops = | |
4561 | { | |
4562 | insert_catch_fork, | |
4563 | remove_catch_fork, | |
4564 | breakpoint_hit_catch_fork, | |
4565 | print_it_catch_fork, | |
4566 | print_one_catch_fork, | |
4567 | print_mention_catch_fork | |
4568 | }; | |
4569 | ||
4570 | /* Implement the "insert" breakpoint_ops method for vfork catchpoints. */ | |
4571 | ||
4572 | static void | |
4573 | insert_catch_vfork (struct breakpoint *b) | |
4574 | { | |
4575 | target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); | |
4576 | } | |
4577 | ||
4578 | /* Implement the "remove" breakpoint_ops method for vfork catchpoints. */ | |
4579 | ||
4580 | static int | |
4581 | remove_catch_vfork (struct breakpoint *b) | |
4582 | { | |
4583 | return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); | |
4584 | } | |
4585 | ||
4586 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
4587 | catchpoints. */ | |
4588 | ||
4589 | static int | |
4590 | breakpoint_hit_catch_vfork (struct breakpoint *b) | |
4591 | { | |
4592 | return inferior_has_vforked (inferior_ptid, &b->forked_inferior_pid); | |
4593 | } | |
4594 | ||
4595 | /* Implement the "print_it" breakpoint_ops method for vfork catchpoints. */ | |
4596 | ||
4597 | static enum print_stop_action | |
4598 | print_it_catch_vfork (struct breakpoint *b) | |
4599 | { | |
4600 | annotate_catchpoint (b->number); | |
4601 | printf_filtered (_("\nCatchpoint %d (vforked process %d), "), | |
4602 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
4603 | return PRINT_SRC_AND_LOC; | |
4604 | } | |
4605 | ||
4606 | /* Implement the "print_one" breakpoint_ops method for vfork catchpoints. */ | |
4607 | ||
4608 | static void | |
4609 | print_one_catch_vfork (struct breakpoint *b, CORE_ADDR *last_addr) | |
4610 | { | |
79a45b7d TT |
4611 | struct value_print_options opts; |
4612 | ||
4613 | get_user_print_options (&opts); | |
ce78b96d JB |
4614 | /* Field 4, the address, is omitted (which makes the columns |
4615 | not line up too nicely with the headers, but the effect | |
4616 | is relatively readable). */ | |
79a45b7d | 4617 | if (opts.addressprint) |
ce78b96d JB |
4618 | ui_out_field_skip (uiout, "addr"); |
4619 | annotate_field (5); | |
4620 | ui_out_text (uiout, "vfork"); | |
4621 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
4622 | { | |
4623 | ui_out_text (uiout, ", process "); | |
4624 | ui_out_field_int (uiout, "what", | |
4625 | ptid_get_pid (b->forked_inferior_pid)); | |
4626 | ui_out_spaces (uiout, 1); | |
4627 | } | |
4628 | } | |
4629 | ||
4630 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
4631 | catchpoints. */ | |
4632 | ||
4633 | static void | |
4634 | print_mention_catch_vfork (struct breakpoint *b) | |
4635 | { | |
4636 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
4637 | } | |
4638 | ||
4639 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ | |
4640 | ||
4641 | static struct breakpoint_ops catch_vfork_breakpoint_ops = | |
4642 | { | |
4643 | insert_catch_vfork, | |
4644 | remove_catch_vfork, | |
4645 | breakpoint_hit_catch_vfork, | |
4646 | print_it_catch_vfork, | |
4647 | print_one_catch_vfork, | |
4648 | print_mention_catch_vfork | |
4649 | }; | |
4650 | ||
4651 | /* Create a new breakpoint of the bp_catchpoint kind and return it. | |
4652 | ||
4653 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
4654 | If COND_STRING is not NULL, then store it in the breakpoint. | |
4655 | OPS, if not NULL, is the breakpoint_ops structure associated | |
4656 | to the catchpoint. */ | |
4657 | ||
4658 | static struct breakpoint * | |
4659 | create_catchpoint (int tempflag, char *cond_string, | |
4660 | struct breakpoint_ops *ops) | |
c906108c | 4661 | { |
c5aa993b JM |
4662 | struct symtab_and_line sal; |
4663 | struct breakpoint *b; | |
c5aa993b | 4664 | |
fe39c653 | 4665 | init_sal (&sal); |
c906108c SS |
4666 | sal.pc = 0; |
4667 | sal.symtab = NULL; | |
4668 | sal.line = 0; | |
c5aa993b | 4669 | |
ce78b96d | 4670 | b = set_raw_breakpoint (sal, bp_catchpoint); |
c906108c SS |
4671 | set_breakpoint_count (breakpoint_count + 1); |
4672 | b->number = breakpoint_count; | |
ce78b96d | 4673 | |
53a5351d JM |
4674 | b->cond_string = (cond_string == NULL) ? |
4675 | NULL : savestring (cond_string, strlen (cond_string)); | |
ce78b96d | 4676 | b->thread = -1; |
c906108c | 4677 | b->addr_string = NULL; |
b5de0fa7 EZ |
4678 | b->enable_state = bp_enabled; |
4679 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
ce78b96d | 4680 | b->ops = ops; |
c5aa993b | 4681 | |
c906108c | 4682 | mention (b); |
ce78b96d | 4683 | update_global_location_list (1); |
c906108c | 4684 | |
ce78b96d | 4685 | return b; |
c906108c | 4686 | } |
c5aa993b | 4687 | |
9b70b993 | 4688 | static void |
ce78b96d JB |
4689 | create_fork_vfork_event_catchpoint (int tempflag, char *cond_string, |
4690 | struct breakpoint_ops *ops) | |
c906108c | 4691 | { |
ce78b96d JB |
4692 | struct breakpoint *b = create_catchpoint (tempflag, cond_string, ops); |
4693 | ||
4694 | /* FIXME: We should put this information in a breakpoint private data | |
4695 | area. */ | |
4696 | b->forked_inferior_pid = null_ptid; | |
c906108c SS |
4697 | } |
4698 | ||
fe798b75 JB |
4699 | /* Exec catchpoints. */ |
4700 | ||
9b70b993 | 4701 | static void |
fe798b75 | 4702 | insert_catch_exec (struct breakpoint *b) |
c906108c | 4703 | { |
fe798b75 JB |
4704 | target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
4705 | } | |
c906108c | 4706 | |
fe798b75 JB |
4707 | static int |
4708 | remove_catch_exec (struct breakpoint *b) | |
4709 | { | |
4710 | return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); | |
4711 | } | |
c906108c | 4712 | |
fe798b75 JB |
4713 | static int |
4714 | breakpoint_hit_catch_exec (struct breakpoint *b) | |
4715 | { | |
4716 | return inferior_has_execd (inferior_ptid, &b->exec_pathname); | |
4717 | } | |
c906108c | 4718 | |
fe798b75 JB |
4719 | static enum print_stop_action |
4720 | print_it_catch_exec (struct breakpoint *b) | |
4721 | { | |
4722 | annotate_catchpoint (b->number); | |
4723 | printf_filtered (_("\nCatchpoint %d (exec'd %s), "), b->number, | |
4724 | b->exec_pathname); | |
4725 | return PRINT_SRC_AND_LOC; | |
c906108c SS |
4726 | } |
4727 | ||
fe798b75 JB |
4728 | static void |
4729 | print_one_catch_exec (struct breakpoint *b, CORE_ADDR *last_addr) | |
4730 | { | |
4731 | struct value_print_options opts; | |
4732 | ||
4733 | get_user_print_options (&opts); | |
4734 | ||
4735 | /* Field 4, the address, is omitted (which makes the columns | |
4736 | not line up too nicely with the headers, but the effect | |
4737 | is relatively readable). */ | |
4738 | if (opts.addressprint) | |
4739 | ui_out_field_skip (uiout, "addr"); | |
4740 | annotate_field (5); | |
4741 | ui_out_text (uiout, "exec"); | |
4742 | if (b->exec_pathname != NULL) | |
4743 | { | |
4744 | ui_out_text (uiout, ", program \""); | |
4745 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
4746 | ui_out_text (uiout, "\" "); | |
4747 | } | |
4748 | } | |
4749 | ||
4750 | static void | |
4751 | print_mention_catch_exec (struct breakpoint *b) | |
4752 | { | |
4753 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
4754 | } | |
4755 | ||
4756 | static struct breakpoint_ops catch_exec_breakpoint_ops = | |
4757 | { | |
4758 | insert_catch_exec, | |
4759 | remove_catch_exec, | |
4760 | breakpoint_hit_catch_exec, | |
4761 | print_it_catch_exec, | |
4762 | print_one_catch_exec, | |
4763 | print_mention_catch_exec | |
4764 | }; | |
4765 | ||
c906108c | 4766 | static int |
fba45db2 | 4767 | hw_breakpoint_used_count (void) |
c906108c | 4768 | { |
52f0bd74 | 4769 | struct breakpoint *b; |
c906108c SS |
4770 | int i = 0; |
4771 | ||
4772 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4773 | { |
d6b74ac4 | 4774 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
c5aa993b JM |
4775 | i++; |
4776 | } | |
c906108c SS |
4777 | |
4778 | return i; | |
4779 | } | |
4780 | ||
4781 | static int | |
fba45db2 | 4782 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 4783 | { |
52f0bd74 | 4784 | struct breakpoint *b; |
c906108c SS |
4785 | int i = 0; |
4786 | ||
4787 | *other_type_used = 0; | |
4788 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4789 | { |
468d015d | 4790 | if (breakpoint_enabled (b)) |
c5aa993b JM |
4791 | { |
4792 | if (b->type == type) | |
4793 | i++; | |
4794 | else if ((b->type == bp_hardware_watchpoint || | |
4795 | b->type == bp_read_watchpoint || | |
468d015d | 4796 | b->type == bp_access_watchpoint)) |
c5aa993b JM |
4797 | *other_type_used = 1; |
4798 | } | |
4799 | } | |
c906108c SS |
4800 | return i; |
4801 | } | |
4802 | ||
c906108c | 4803 | void |
fba45db2 | 4804 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 4805 | { |
c5aa993b | 4806 | struct breakpoint *b; |
c906108c SS |
4807 | |
4808 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4809 | { |
4810 | if (((b->type == bp_watchpoint) | |
4811 | || (b->type == bp_hardware_watchpoint) | |
4812 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 4813 | || (b->type == bp_access_watchpoint)) |
468d015d | 4814 | && breakpoint_enabled (b)) |
c5aa993b | 4815 | { |
b5de0fa7 | 4816 | b->enable_state = bp_call_disabled; |
b60e7edf | 4817 | update_global_location_list (0); |
c5aa993b JM |
4818 | } |
4819 | } | |
c906108c SS |
4820 | } |
4821 | ||
4822 | void | |
fba45db2 | 4823 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 4824 | { |
c5aa993b | 4825 | struct breakpoint *b; |
c906108c SS |
4826 | |
4827 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4828 | { |
4829 | if (((b->type == bp_watchpoint) | |
4830 | || (b->type == bp_hardware_watchpoint) | |
4831 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 4832 | || (b->type == bp_access_watchpoint)) |
b5de0fa7 | 4833 | && (b->enable_state == bp_call_disabled)) |
c5aa993b | 4834 | { |
b5de0fa7 | 4835 | b->enable_state = bp_enabled; |
b60e7edf | 4836 | update_global_location_list (1); |
c5aa993b JM |
4837 | } |
4838 | } | |
c906108c SS |
4839 | } |
4840 | ||
4841 | ||
4842 | /* Set a breakpoint that will evaporate an end of command | |
4843 | at address specified by SAL. | |
4844 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
4845 | ||
4846 | struct breakpoint * | |
818dd999 | 4847 | set_momentary_breakpoint (struct symtab_and_line sal, struct frame_id frame_id, |
fba45db2 | 4848 | enum bptype type) |
c906108c | 4849 | { |
52f0bd74 | 4850 | struct breakpoint *b; |
4d28f7a8 | 4851 | b = set_raw_breakpoint (sal, type); |
b5de0fa7 EZ |
4852 | b->enable_state = bp_enabled; |
4853 | b->disposition = disp_donttouch; | |
818dd999 | 4854 | b->frame_id = frame_id; |
c906108c SS |
4855 | |
4856 | /* If we're debugging a multi-threaded program, then we | |
4857 | want momentary breakpoints to be active in only a | |
4858 | single thread of control. */ | |
39f77062 KB |
4859 | if (in_thread_list (inferior_ptid)) |
4860 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 4861 | |
b60e7edf | 4862 | update_global_location_list_nothrow (1); |
74960c60 | 4863 | |
c906108c SS |
4864 | return b; |
4865 | } | |
611c83ae PA |
4866 | |
4867 | struct breakpoint * | |
4868 | set_momentary_breakpoint_at_pc (CORE_ADDR pc, enum bptype type) | |
4869 | { | |
4870 | struct symtab_and_line sal; | |
4871 | ||
4872 | sal = find_pc_line (pc, 0); | |
4873 | sal.pc = pc; | |
4874 | sal.section = find_pc_overlay (pc); | |
4875 | sal.explicit_pc = 1; | |
4876 | ||
4877 | return set_momentary_breakpoint (sal, null_frame_id, type); | |
4878 | } | |
c906108c | 4879 | \f |
c5aa993b | 4880 | |
c906108c SS |
4881 | /* Tell the user we have just set a breakpoint B. */ |
4882 | ||
4883 | static void | |
fba45db2 | 4884 | mention (struct breakpoint *b) |
c906108c SS |
4885 | { |
4886 | int say_where = 0; | |
3b31d625 | 4887 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 | 4888 | struct ui_stream *stb; |
79a45b7d TT |
4889 | struct value_print_options opts; |
4890 | ||
4891 | get_user_print_options (&opts); | |
8b93c638 JM |
4892 | |
4893 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 4894 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c | 4895 | |
9a4105ab AC |
4896 | /* FIXME: This is misplaced; mention() is called by things (like |
4897 | hitting a watchpoint) other than breakpoint creation. It should | |
4898 | be possible to clean this up and at the same time replace the | |
7f4b89d1 | 4899 | random calls to breakpoint_changed with this hook. */ |
383f836e | 4900 | observer_notify_breakpoint_created (b->number); |
c906108c | 4901 | |
3086aeae DJ |
4902 | if (b->ops != NULL && b->ops->print_mention != NULL) |
4903 | b->ops->print_mention (b); | |
4904 | else | |
4905 | switch (b->type) | |
4906 | { | |
4907 | case bp_none: | |
a3f17187 | 4908 | printf_filtered (_("(apparently deleted?) Eventpoint %d: "), b->number); |
3086aeae DJ |
4909 | break; |
4910 | case bp_watchpoint: | |
4911 | ui_out_text (uiout, "Watchpoint "); | |
4912 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4913 | ui_out_field_int (uiout, "number", b->number); | |
4914 | ui_out_text (uiout, ": "); | |
4915 | print_expression (b->exp, stb->stream); | |
4916 | ui_out_field_stream (uiout, "exp", stb); | |
4917 | do_cleanups (ui_out_chain); | |
4918 | break; | |
4919 | case bp_hardware_watchpoint: | |
4920 | ui_out_text (uiout, "Hardware watchpoint "); | |
4921 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4922 | ui_out_field_int (uiout, "number", b->number); | |
4923 | ui_out_text (uiout, ": "); | |
4924 | print_expression (b->exp, stb->stream); | |
4925 | ui_out_field_stream (uiout, "exp", stb); | |
4926 | do_cleanups (ui_out_chain); | |
4927 | break; | |
4928 | case bp_read_watchpoint: | |
4929 | ui_out_text (uiout, "Hardware read watchpoint "); | |
4930 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
4931 | ui_out_field_int (uiout, "number", b->number); | |
4932 | ui_out_text (uiout, ": "); | |
4933 | print_expression (b->exp, stb->stream); | |
4934 | ui_out_field_stream (uiout, "exp", stb); | |
4935 | do_cleanups (ui_out_chain); | |
4936 | break; | |
4937 | case bp_access_watchpoint: | |
4938 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
4939 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
4940 | ui_out_field_int (uiout, "number", b->number); | |
4941 | ui_out_text (uiout, ": "); | |
4942 | print_expression (b->exp, stb->stream); | |
4943 | ui_out_field_stream (uiout, "exp", stb); | |
4944 | do_cleanups (ui_out_chain); | |
4945 | break; | |
4946 | case bp_breakpoint: | |
4947 | if (ui_out_is_mi_like_p (uiout)) | |
4948 | { | |
4949 | say_where = 0; | |
4950 | break; | |
4951 | } | |
2cec12e5 AR |
4952 | if (b->disposition == disp_del) |
4953 | printf_filtered (_("Temporary breakpoint")); | |
4954 | else | |
4955 | printf_filtered (_("Breakpoint")); | |
4956 | printf_filtered (_(" %d"), b->number); | |
3086aeae DJ |
4957 | say_where = 1; |
4958 | break; | |
4959 | case bp_hardware_breakpoint: | |
4960 | if (ui_out_is_mi_like_p (uiout)) | |
4961 | { | |
4962 | say_where = 0; | |
4963 | break; | |
4964 | } | |
a3f17187 | 4965 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); |
3086aeae DJ |
4966 | say_where = 1; |
4967 | break; | |
3086aeae DJ |
4968 | |
4969 | case bp_until: | |
4970 | case bp_finish: | |
4971 | case bp_longjmp: | |
4972 | case bp_longjmp_resume: | |
4973 | case bp_step_resume: | |
3086aeae DJ |
4974 | case bp_call_dummy: |
4975 | case bp_watchpoint_scope: | |
4976 | case bp_shlib_event: | |
4977 | case bp_thread_event: | |
4978 | case bp_overlay_event: | |
4979 | break; | |
4980 | } | |
c906108c | 4981 | |
c906108c SS |
4982 | if (say_where) |
4983 | { | |
a3f17187 AC |
4984 | /* i18n: cagney/2005-02-11: Below needs to be merged into a |
4985 | single string. */ | |
0d381245 | 4986 | if (b->loc == NULL) |
c906108c | 4987 | { |
a3f17187 | 4988 | printf_filtered (_(" (%s) pending."), b->addr_string); |
0101ce28 JJ |
4989 | } |
4990 | else | |
4991 | { | |
79a45b7d | 4992 | if (opts.addressprint || b->source_file == NULL) |
0101ce28 JJ |
4993 | { |
4994 | printf_filtered (" at "); | |
ed49a04f | 4995 | fputs_filtered (paddress (b->loc->address), gdb_stdout); |
0101ce28 JJ |
4996 | } |
4997 | if (b->source_file) | |
4998 | printf_filtered (": file %s, line %d.", | |
4999 | b->source_file, b->line_number); | |
0d381245 VP |
5000 | |
5001 | if (b->loc->next) | |
5002 | { | |
5003 | struct bp_location *loc = b->loc; | |
5004 | int n = 0; | |
5005 | for (; loc; loc = loc->next) | |
5006 | ++n; | |
5007 | printf_filtered (" (%d locations)", n); | |
5008 | } | |
5009 | ||
c906108c | 5010 | } |
c906108c | 5011 | } |
8b93c638 | 5012 | do_cleanups (old_chain); |
9dc5e2a9 | 5013 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 5014 | return; |
c906108c SS |
5015 | printf_filtered ("\n"); |
5016 | } | |
c906108c | 5017 | \f |
c5aa993b | 5018 | |
0d381245 | 5019 | static struct bp_location * |
39d61571 | 5020 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
5021 | const struct symtab_and_line *sal) |
5022 | { | |
5023 | struct bp_location *loc, **tmp; | |
5024 | ||
39d61571 | 5025 | loc = allocate_bp_location (b); |
0d381245 VP |
5026 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
5027 | ; | |
5028 | *tmp = loc; | |
5029 | loc->requested_address = sal->pc; | |
39d61571 | 5030 | loc->address = adjust_breakpoint_address (loc->requested_address, b->type); |
0d381245 VP |
5031 | loc->section = sal->section; |
5032 | ||
5033 | set_breakpoint_location_function (loc); | |
5034 | return loc; | |
5035 | } | |
514f746b AR |
5036 | \f |
5037 | ||
5038 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
5039 | return 0 otherwise. */ | |
5040 | ||
5041 | static int | |
5042 | bp_loc_is_permanent (struct bp_location *loc) | |
5043 | { | |
5044 | int len; | |
5045 | CORE_ADDR addr; | |
5046 | const gdb_byte *brk; | |
5047 | gdb_byte *target_mem; | |
939c61fa JK |
5048 | struct cleanup *cleanup; |
5049 | int retval = 0; | |
514f746b AR |
5050 | |
5051 | gdb_assert (loc != NULL); | |
5052 | ||
5053 | addr = loc->address; | |
5054 | brk = gdbarch_breakpoint_from_pc (current_gdbarch, &addr, &len); | |
5055 | ||
939c61fa JK |
5056 | /* Software breakpoints unsupported? */ |
5057 | if (brk == NULL) | |
5058 | return 0; | |
5059 | ||
514f746b AR |
5060 | target_mem = alloca (len); |
5061 | ||
939c61fa JK |
5062 | /* Enable the automatic memory restoration from breakpoints while |
5063 | we read the memory. Otherwise we could say about our temporary | |
5064 | breakpoints they are permanent. */ | |
5065 | cleanup = make_show_memory_breakpoints_cleanup (0); | |
5066 | ||
514f746b AR |
5067 | if (target_read_memory (loc->address, target_mem, len) == 0 |
5068 | && memcmp (target_mem, brk, len) == 0) | |
939c61fa | 5069 | retval = 1; |
514f746b | 5070 | |
939c61fa JK |
5071 | do_cleanups (cleanup); |
5072 | ||
5073 | return retval; | |
514f746b AR |
5074 | } |
5075 | ||
5076 | ||
c3f6f71d | 5077 | |
018d34a4 VP |
5078 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
5079 | as textual description of the location, and COND_STRING | |
db107f19 | 5080 | as condition expression. */ |
018d34a4 VP |
5081 | |
5082 | static void | |
0d381245 | 5083 | create_breakpoint (struct symtabs_and_lines sals, char *addr_string, |
018d34a4 VP |
5084 | char *cond_string, |
5085 | enum bptype type, enum bpdisp disposition, | |
604133b5 AR |
5086 | int thread, int ignore_count, |
5087 | struct breakpoint_ops *ops, int from_tty) | |
018d34a4 | 5088 | { |
0d381245 VP |
5089 | struct breakpoint *b = NULL; |
5090 | int i; | |
018d34a4 VP |
5091 | |
5092 | if (type == bp_hardware_breakpoint) | |
5093 | { | |
5094 | int i = hw_breakpoint_used_count (); | |
5095 | int target_resources_ok = | |
5096 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
5097 | i + 1, 0); | |
5098 | if (target_resources_ok == 0) | |
5099 | error (_("No hardware breakpoint support in the target.")); | |
5100 | else if (target_resources_ok < 0) | |
5101 | error (_("Hardware breakpoints used exceeds limit.")); | |
5102 | } | |
5103 | ||
0d381245 VP |
5104 | for (i = 0; i < sals.nelts; ++i) |
5105 | { | |
5106 | struct symtab_and_line sal = sals.sals[i]; | |
5107 | struct bp_location *loc; | |
5108 | ||
5109 | if (from_tty) | |
5110 | describe_other_breakpoints (sal.pc, sal.section, thread); | |
5111 | ||
5112 | if (i == 0) | |
5113 | { | |
5114 | b = set_raw_breakpoint (sal, type); | |
5115 | set_breakpoint_count (breakpoint_count + 1); | |
5116 | b->number = breakpoint_count; | |
5117 | b->thread = thread; | |
018d34a4 | 5118 | |
0d381245 VP |
5119 | b->cond_string = cond_string; |
5120 | b->ignore_count = ignore_count; | |
5121 | b->enable_state = bp_enabled; | |
5122 | b->disposition = disposition; | |
018d34a4 | 5123 | |
0d381245 VP |
5124 | loc = b->loc; |
5125 | } | |
5126 | else | |
018d34a4 | 5127 | { |
39d61571 | 5128 | loc = add_location_to_breakpoint (b, &sal); |
0d381245 VP |
5129 | } |
5130 | ||
514f746b AR |
5131 | if (bp_loc_is_permanent (loc)) |
5132 | make_breakpoint_permanent (b); | |
5133 | ||
0d381245 VP |
5134 | if (b->cond_string) |
5135 | { | |
5136 | char *arg = b->cond_string; | |
d32a6982 | 5137 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); |
0d381245 | 5138 | if (*arg) |
db107f19 | 5139 | error (_("Garbage %s follows condition"), arg); |
018d34a4 | 5140 | } |
0d381245 | 5141 | } |
018d34a4 VP |
5142 | |
5143 | if (addr_string) | |
5144 | b->addr_string = addr_string; | |
5145 | else | |
5146 | /* addr_string has to be used or breakpoint_re_set will delete | |
5147 | me. */ | |
5148 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); | |
5149 | ||
604133b5 | 5150 | b->ops = ops; |
018d34a4 VP |
5151 | mention (b); |
5152 | } | |
5153 | ||
ed0616c6 VP |
5154 | /* Remove element at INDEX_TO_REMOVE from SAL, shifting other |
5155 | elements to fill the void space. */ | |
5156 | static void remove_sal (struct symtabs_and_lines *sal, int index_to_remove) | |
5157 | { | |
5158 | int i = index_to_remove+1; | |
5159 | int last_index = sal->nelts-1; | |
5160 | ||
5161 | for (;i <= last_index; ++i) | |
5162 | sal->sals[i-1] = sal->sals[i]; | |
5163 | ||
5164 | --(sal->nelts); | |
5165 | } | |
5166 | ||
5167 | /* If appropriate, obtains all sals that correspond | |
5168 | to the same file and line as SAL. This is done | |
5169 | only if SAL does not have explicit PC and has | |
5170 | line and file information. If we got just a single | |
5171 | expanded sal, return the original. | |
5172 | ||
5173 | Otherwise, if SAL.explicit_line is not set, filter out | |
5174 | all sals for which the name of enclosing function | |
5175 | is different from SAL. This makes sure that if we have | |
5176 | breakpoint originally set in template instantiation, say | |
5177 | foo<int>(), we won't expand SAL to locations at the same | |
5178 | line in all existing instantiations of 'foo'. | |
5179 | ||
5180 | */ | |
5181 | struct symtabs_and_lines | |
5182 | expand_line_sal_maybe (struct symtab_and_line sal) | |
5183 | { | |
5184 | struct symtabs_and_lines expanded; | |
5185 | CORE_ADDR original_pc = sal.pc; | |
5186 | char *original_function = NULL; | |
5187 | int found; | |
5188 | int i; | |
5189 | ||
5190 | /* If we have explicit pc, don't expand. | |
5191 | If we have no line number, we can't expand. */ | |
5192 | if (sal.explicit_pc || sal.line == 0 || sal.symtab == NULL) | |
5193 | { | |
5194 | expanded.nelts = 1; | |
5195 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5196 | expanded.sals[0] = sal; | |
5197 | return expanded; | |
5198 | } | |
5199 | ||
5200 | sal.pc = 0; | |
5201 | find_pc_partial_function (original_pc, &original_function, NULL, NULL); | |
5202 | ||
5203 | expanded = expand_line_sal (sal); | |
5204 | if (expanded.nelts == 1) | |
5205 | { | |
5206 | /* We had one sal, we got one sal. Without futher | |
5207 | processing, just return the original sal. */ | |
5208 | xfree (expanded.sals); | |
5209 | expanded.nelts = 1; | |
5210 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5211 | sal.pc = original_pc; | |
5212 | expanded.sals[0] = sal; | |
5213 | return expanded; | |
5214 | } | |
5215 | ||
5216 | if (!sal.explicit_line) | |
5217 | { | |
5218 | CORE_ADDR func_addr, func_end; | |
5219 | for (i = 0; i < expanded.nelts; ++i) | |
5220 | { | |
5221 | CORE_ADDR pc = expanded.sals[i].pc; | |
5222 | char *this_function; | |
5223 | if (find_pc_partial_function (pc, &this_function, | |
5224 | &func_addr, &func_end)) | |
5225 | { | |
5226 | if (this_function && | |
5227 | strcmp (this_function, original_function) != 0) | |
5228 | { | |
5229 | remove_sal (&expanded, i); | |
5230 | --i; | |
5231 | } | |
5232 | else if (func_addr == pc) | |
5233 | { | |
5234 | /* We're at beginning of a function, and should | |
5235 | skip prologue. */ | |
5236 | struct symbol *sym = find_pc_function (pc); | |
5237 | if (sym) | |
5238 | expanded.sals[i] = find_function_start_sal (sym, 1); | |
5239 | else | |
5240 | expanded.sals[i].pc | |
5241 | = gdbarch_skip_prologue (current_gdbarch, pc); | |
5242 | } | |
5243 | } | |
5244 | } | |
5245 | } | |
5246 | ||
5247 | ||
5248 | if (expanded.nelts <= 1) | |
5249 | { | |
5250 | /* This is un ugly workaround. If we get zero | |
5251 | expanded sals then something is really wrong. | |
5252 | Fix that by returnign the original sal. */ | |
5253 | xfree (expanded.sals); | |
5254 | expanded.nelts = 1; | |
5255 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5256 | sal.pc = original_pc; | |
5257 | expanded.sals[0] = sal; | |
5258 | return expanded; | |
5259 | } | |
5260 | ||
5261 | if (original_pc) | |
5262 | { | |
5263 | found = 0; | |
5264 | for (i = 0; i < expanded.nelts; ++i) | |
5265 | if (expanded.sals[i].pc == original_pc) | |
5266 | { | |
5267 | found = 1; | |
5268 | break; | |
5269 | } | |
5270 | gdb_assert (found); | |
5271 | } | |
5272 | ||
5273 | return expanded; | |
5274 | } | |
5275 | ||
018d34a4 VP |
5276 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
5277 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
5278 | value. COND_STRING, if not NULL, specified the condition to be | |
5279 | used for all breakpoints. Essentially the only case where | |
5280 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
5281 | function. In that case, it's still not possible to specify | |
5282 | separate conditions for different overloaded functions, so | |
5283 | we take just a single condition string. | |
5284 | ||
c3f6f71d | 5285 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 5286 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
5287 | array contents). If the function fails (error() is called), the |
5288 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
5289 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
5290 | |
5291 | static void | |
c3f6f71d | 5292 | create_breakpoints (struct symtabs_and_lines sals, char **addr_string, |
018d34a4 | 5293 | char *cond_string, |
c3f6f71d | 5294 | enum bptype type, enum bpdisp disposition, |
604133b5 AR |
5295 | int thread, int ignore_count, |
5296 | struct breakpoint_ops *ops, int from_tty) | |
c906108c | 5297 | { |
018d34a4 VP |
5298 | int i; |
5299 | for (i = 0; i < sals.nelts; ++i) | |
c3f6f71d | 5300 | { |
ed0616c6 VP |
5301 | struct symtabs_and_lines expanded = |
5302 | expand_line_sal_maybe (sals.sals[i]); | |
0d381245 | 5303 | |
ed0616c6 | 5304 | create_breakpoint (expanded, addr_string[i], |
018d34a4 | 5305 | cond_string, type, disposition, |
604133b5 | 5306 | thread, ignore_count, ops, from_tty); |
c3f6f71d | 5307 | } |
74960c60 | 5308 | |
b60e7edf | 5309 | update_global_location_list (1); |
c3f6f71d | 5310 | } |
c906108c | 5311 | |
c3f6f71d JM |
5312 | /* Parse ARG which is assumed to be a SAL specification possibly |
5313 | followed by conditionals. On return, SALS contains an array of SAL | |
5314 | addresses found. ADDR_STRING contains a vector of (canonical) | |
5315 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 5316 | |
b9362cc7 | 5317 | static void |
c3f6f71d JM |
5318 | parse_breakpoint_sals (char **address, |
5319 | struct symtabs_and_lines *sals, | |
0101ce28 JJ |
5320 | char ***addr_string, |
5321 | int *not_found_ptr) | |
c3f6f71d JM |
5322 | { |
5323 | char *addr_start = *address; | |
5324 | *addr_string = NULL; | |
5325 | /* If no arg given, or if first arg is 'if ', use the default | |
5326 | breakpoint. */ | |
5327 | if ((*address) == NULL | |
5328 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
5329 | { |
5330 | if (default_breakpoint_valid) | |
5331 | { | |
c3f6f71d | 5332 | struct symtab_and_line sal; |
fe39c653 | 5333 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 5334 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
5335 | xmalloc (sizeof (struct symtab_and_line)); |
5336 | sal.pc = default_breakpoint_address; | |
5337 | sal.line = default_breakpoint_line; | |
5338 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 5339 | sal.section = find_pc_overlay (sal.pc); |
c3f6f71d JM |
5340 | sals->sals[0] = sal; |
5341 | sals->nelts = 1; | |
c906108c SS |
5342 | } |
5343 | else | |
8a3fe4f8 | 5344 | error (_("No default breakpoint address now.")); |
c906108c SS |
5345 | } |
5346 | else | |
5347 | { | |
c906108c | 5348 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
5349 | current_source_symtab (which is decode_line_1's default). This |
5350 | should produce the results we want almost all of the time while | |
1aeae86e AF |
5351 | leaving default_breakpoint_* alone. |
5352 | ObjC: However, don't match an Objective-C method name which | |
5353 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 5354 | |
c214a6fd | 5355 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 5356 | |
c906108c | 5357 | if (default_breakpoint_valid |
0378c332 | 5358 | && (!cursal.symtab |
1aeae86e AF |
5359 | || ((strchr ("+-", (*address)[0]) != NULL) |
5360 | && ((*address)[1] != '[')))) | |
c3f6f71d | 5361 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
0101ce28 JJ |
5362 | default_breakpoint_line, addr_string, |
5363 | not_found_ptr); | |
c906108c | 5364 | else |
0101ce28 JJ |
5365 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
5366 | addr_string, not_found_ptr); | |
c906108c | 5367 | } |
c3f6f71d JM |
5368 | /* For any SAL that didn't have a canonical string, fill one in. */ |
5369 | if (sals->nelts > 0 && *addr_string == NULL) | |
5370 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
5371 | if (addr_start != (*address)) | |
c906108c | 5372 | { |
c3f6f71d JM |
5373 | int i; |
5374 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 5375 | { |
c3f6f71d JM |
5376 | /* Add the string if not present. */ |
5377 | if ((*addr_string)[i] == NULL) | |
5378 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
5379 | } |
5380 | } | |
c3f6f71d | 5381 | } |
c906108c | 5382 | |
c906108c | 5383 | |
c3f6f71d JM |
5384 | /* Convert each SAL into a real PC. Verify that the PC can be |
5385 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 5386 | |
b9362cc7 | 5387 | static void |
c3f6f71d JM |
5388 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, |
5389 | char *address) | |
5390 | { | |
5391 | int i; | |
5392 | for (i = 0; i < sals->nelts; i++) | |
ee53e872 | 5393 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
5394 | } |
5395 | ||
05ff989b | 5396 | static void |
0101ce28 JJ |
5397 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) |
5398 | { | |
5399 | struct captured_parse_breakpoint_args *args = data; | |
5400 | ||
5401 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p, | |
5402 | args->not_found_ptr); | |
0101ce28 JJ |
5403 | } |
5404 | ||
018d34a4 VP |
5405 | /* Given TOK, a string specification of condition and thread, as |
5406 | accepted by the 'break' command, extract the condition | |
5407 | string and thread number and set *COND_STRING and *THREAD. | |
5408 | PC identifies the context at which the condition should be parsed. | |
5409 | If no condition is found, *COND_STRING is set to NULL. | |
5410 | If no thread is found, *THREAD is set to -1. */ | |
5411 | static void | |
5412 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
5413 | char **cond_string, int *thread) | |
5414 | { | |
5415 | *cond_string = NULL; | |
5416 | *thread = -1; | |
5417 | while (tok && *tok) | |
5418 | { | |
5419 | char *end_tok; | |
5420 | int toklen; | |
5421 | char *cond_start = NULL; | |
5422 | char *cond_end = NULL; | |
5423 | while (*tok == ' ' || *tok == '\t') | |
5424 | tok++; | |
5425 | ||
5426 | end_tok = tok; | |
5427 | ||
5428 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5429 | end_tok++; | |
5430 | ||
5431 | toklen = end_tok - tok; | |
5432 | ||
5433 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5434 | { | |
5435 | tok = cond_start = end_tok + 1; | |
5436 | parse_exp_1 (&tok, block_for_pc (pc), 0); | |
5437 | cond_end = tok; | |
5438 | *cond_string = savestring (cond_start, | |
5439 | cond_end - cond_start); | |
5440 | } | |
5441 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5442 | { | |
5443 | char *tmptok; | |
5444 | ||
5445 | tok = end_tok + 1; | |
5446 | tmptok = tok; | |
5447 | *thread = strtol (tok, &tok, 0); | |
5448 | if (tok == tmptok) | |
5449 | error (_("Junk after thread keyword.")); | |
5450 | if (!valid_thread_id (*thread)) | |
5451 | error (_("Unknown thread %d."), *thread); | |
5452 | } | |
5453 | else | |
5454 | error (_("Junk at end of arguments.")); | |
5455 | } | |
5456 | } | |
5457 | ||
72b2ff0e VP |
5458 | /* Set a breakpoint. This function is shared between |
5459 | CLI and MI functions for setting a breakpoint. | |
5460 | This function has two major modes of operations, | |
5461 | selected by the PARSE_CONDITION_AND_THREAD parameter. | |
5462 | If non-zero, the function will parse arg, extracting | |
5463 | breakpoint location, address and thread. Otherwise, | |
5464 | ARG is just the location of breakpoint, with condition | |
5465 | and thread specified by the COND_STRING and THREAD | |
5466 | parameters. */ | |
0101ce28 | 5467 | |
98deb0da | 5468 | static void |
72b2ff0e | 5469 | break_command_really (char *arg, char *cond_string, int thread, |
60c46647 VP |
5470 | int parse_condition_and_thread, |
5471 | int tempflag, int hardwareflag, | |
5472 | int ignore_count, | |
5473 | enum auto_boolean pending_break_support, | |
604133b5 | 5474 | struct breakpoint_ops *ops, |
60c46647 | 5475 | int from_tty) |
c3f6f71d | 5476 | { |
71fff37b | 5477 | struct gdb_exception e; |
c3f6f71d | 5478 | struct symtabs_and_lines sals; |
0101ce28 | 5479 | struct symtab_and_line pending_sal; |
0101ce28 JJ |
5480 | char *copy_arg; |
5481 | char *err_msg; | |
c3f6f71d JM |
5482 | char *addr_start = arg; |
5483 | char **addr_string; | |
5484 | struct cleanup *old_chain; | |
5485 | struct cleanup *breakpoint_chain = NULL; | |
0101ce28 | 5486 | struct captured_parse_breakpoint_args parse_args; |
05ff989b | 5487 | int i; |
0101ce28 | 5488 | int pending = 0; |
0101ce28 | 5489 | int not_found = 0; |
c3f6f71d | 5490 | |
c3f6f71d JM |
5491 | sals.sals = NULL; |
5492 | sals.nelts = 0; | |
5493 | addr_string = NULL; | |
c3f6f71d | 5494 | |
0101ce28 JJ |
5495 | parse_args.arg_p = &arg; |
5496 | parse_args.sals_p = &sals; | |
5497 | parse_args.addr_string_p = &addr_string; | |
5498 | parse_args.not_found_ptr = ¬_found; | |
5499 | ||
05ff989b AC |
5500 | e = catch_exception (uiout, do_captured_parse_breakpoint, |
5501 | &parse_args, RETURN_MASK_ALL); | |
0101ce28 JJ |
5502 | |
5503 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 5504 | switch (e.reason) |
0101ce28 | 5505 | { |
05ff989b | 5506 | case RETURN_QUIT: |
98deb0da | 5507 | throw_exception (e); |
05ff989b AC |
5508 | case RETURN_ERROR: |
5509 | switch (e.error) | |
0101ce28 | 5510 | { |
05ff989b | 5511 | case NOT_FOUND_ERROR: |
0101ce28 | 5512 | |
05ff989b AC |
5513 | /* If pending breakpoint support is turned off, throw |
5514 | error. */ | |
fa8d40ab JJ |
5515 | |
5516 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
5517 | throw_exception (e); |
5518 | ||
5519 | exception_print (gdb_stderr, e); | |
fa8d40ab | 5520 | |
05ff989b AC |
5521 | /* If pending breakpoint support is auto query and the user |
5522 | selects no, then simply return the error code. */ | |
fa8d40ab JJ |
5523 | if (pending_break_support == AUTO_BOOLEAN_AUTO && |
5524 | !nquery ("Make breakpoint pending on future shared library load? ")) | |
98deb0da | 5525 | return; |
fa8d40ab | 5526 | |
05ff989b AC |
5527 | /* At this point, either the user was queried about setting |
5528 | a pending breakpoint and selected yes, or pending | |
5529 | breakpoint behavior is on and thus a pending breakpoint | |
5530 | is defaulted on behalf of the user. */ | |
0101ce28 JJ |
5531 | copy_arg = xstrdup (addr_start); |
5532 | addr_string = ©_arg; | |
5533 | sals.nelts = 1; | |
5534 | sals.sals = &pending_sal; | |
5535 | pending_sal.pc = 0; | |
5536 | pending = 1; | |
05ff989b AC |
5537 | break; |
5538 | default: | |
98deb0da | 5539 | throw_exception (e); |
0101ce28 | 5540 | } |
05ff989b AC |
5541 | default: |
5542 | if (!sals.nelts) | |
98deb0da | 5543 | return; |
0101ce28 | 5544 | } |
c3f6f71d JM |
5545 | |
5546 | /* Create a chain of things that always need to be cleaned up. */ | |
5547 | old_chain = make_cleanup (null_cleanup, 0); | |
5548 | ||
0101ce28 JJ |
5549 | if (!pending) |
5550 | { | |
5551 | /* Make sure that all storage allocated to SALS gets freed. */ | |
5552 | make_cleanup (xfree, sals.sals); | |
5553 | ||
5554 | /* Cleanup the addr_string array but not its contents. */ | |
5555 | make_cleanup (xfree, addr_string); | |
5556 | } | |
c3f6f71d | 5557 | |
c3f6f71d JM |
5558 | /* ----------------------------- SNIP ----------------------------- |
5559 | Anything added to the cleanup chain beyond this point is assumed | |
5560 | to be part of a breakpoint. If the breakpoint create succeeds | |
5561 | then the memory is not reclaimed. */ | |
5562 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
5563 | ||
5564 | /* Mark the contents of the addr_string for cleanup. These go on | |
5565 | the breakpoint_chain and only occure if the breakpoint create | |
5566 | fails. */ | |
5567 | for (i = 0; i < sals.nelts; i++) | |
5568 | { | |
5569 | if (addr_string[i] != NULL) | |
b8c9b27d | 5570 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
5571 | } |
5572 | ||
5573 | /* Resolve all line numbers to PC's and verify that the addresses | |
5574 | are ok for the target. */ | |
0101ce28 JJ |
5575 | if (!pending) |
5576 | breakpoint_sals_to_pc (&sals, addr_start); | |
c3f6f71d JM |
5577 | |
5578 | /* Verify that condition can be parsed, before setting any | |
5579 | breakpoints. Allocate a separate condition expression for each | |
5580 | breakpoint. */ | |
0101ce28 | 5581 | if (!pending) |
c3f6f71d | 5582 | { |
2f069f6f | 5583 | if (parse_condition_and_thread) |
72b2ff0e VP |
5584 | { |
5585 | /* Here we only parse 'arg' to separate condition | |
5586 | from thread number, so parsing in context of first | |
5587 | sal is OK. When setting the breakpoint we'll | |
5588 | re-parse it in context of each sal. */ | |
5589 | cond_string = NULL; | |
5590 | thread = -1; | |
5591 | find_condition_and_thread (arg, sals.sals[0].pc, &cond_string, &thread); | |
5592 | if (cond_string) | |
5593 | make_cleanup (xfree, cond_string); | |
5594 | } | |
2f069f6f | 5595 | else |
72b2ff0e VP |
5596 | { |
5597 | /* Create a private copy of condition string. */ | |
5598 | if (cond_string) | |
5599 | { | |
5600 | cond_string = xstrdup (cond_string); | |
5601 | make_cleanup (xfree, cond_string); | |
5602 | } | |
5603 | } | |
018d34a4 | 5604 | create_breakpoints (sals, addr_string, cond_string, |
0101ce28 JJ |
5605 | hardwareflag ? bp_hardware_breakpoint |
5606 | : bp_breakpoint, | |
5607 | tempflag ? disp_del : disp_donttouch, | |
604133b5 | 5608 | thread, ignore_count, ops, from_tty); |
c906108c | 5609 | } |
0101ce28 JJ |
5610 | else |
5611 | { | |
fe3f5fa8 | 5612 | struct symtab_and_line sal = {0}; |
0101ce28 JJ |
5613 | struct breakpoint *b; |
5614 | ||
0101ce28 JJ |
5615 | make_cleanup (xfree, copy_arg); |
5616 | ||
0d381245 VP |
5617 | b = set_raw_breakpoint_without_location (hardwareflag |
5618 | ? bp_hardware_breakpoint | |
5619 | : bp_breakpoint); | |
0101ce28 JJ |
5620 | set_breakpoint_count (breakpoint_count + 1); |
5621 | b->number = breakpoint_count; | |
72b2ff0e | 5622 | b->thread = -1; |
018d34a4 | 5623 | b->addr_string = addr_string[0]; |
72b2ff0e | 5624 | b->cond_string = NULL; |
0101ce28 | 5625 | b->ignore_count = ignore_count; |
0101ce28 | 5626 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 5627 | b->condition_not_parsed = 1; |
604133b5 | 5628 | b->ops = ops; |
74960c60 | 5629 | |
b60e7edf | 5630 | update_global_location_list (1); |
0101ce28 JJ |
5631 | mention (b); |
5632 | } | |
5633 | ||
c3f6f71d | 5634 | if (sals.nelts > 1) |
8a3fe4f8 AC |
5635 | warning (_("Multiple breakpoints were set.\n" |
5636 | "Use the \"delete\" command to delete unwanted breakpoints.")); | |
c3f6f71d JM |
5637 | /* That's it. Discard the cleanups for data inserted into the |
5638 | breakpoint. */ | |
5639 | discard_cleanups (breakpoint_chain); | |
5640 | /* But cleanup everything else. */ | |
5641 | do_cleanups (old_chain); | |
5642 | } | |
c906108c | 5643 | |
72b2ff0e VP |
5644 | /* Set a breakpoint. |
5645 | ARG is a string describing breakpoint address, | |
5646 | condition, and thread. | |
5647 | FLAG specifies if a breakpoint is hardware on, | |
5648 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
5649 | and BP_TEMPFLAG. */ | |
5650 | ||
98deb0da | 5651 | static void |
72b2ff0e | 5652 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 5653 | { |
72b2ff0e VP |
5654 | int hardwareflag = flag & BP_HARDWAREFLAG; |
5655 | int tempflag = flag & BP_TEMPFLAG; | |
c3f6f71d | 5656 | |
98deb0da VP |
5657 | break_command_really (arg, |
5658 | NULL, 0, 1 /* parse arg */, | |
5659 | tempflag, hardwareflag, | |
5660 | 0 /* Ignore count */, | |
604133b5 AR |
5661 | pending_break_support, |
5662 | NULL /* breakpoint_ops */, | |
5663 | from_tty); | |
c906108c SS |
5664 | } |
5665 | ||
72b2ff0e | 5666 | |
98deb0da VP |
5667 | void |
5668 | set_breakpoint (char *address, char *condition, | |
c3f6f71d | 5669 | int hardwareflag, int tempflag, |
ce43223b | 5670 | int thread, int ignore_count, |
98deb0da | 5671 | int pending) |
c3f6f71d | 5672 | { |
98deb0da VP |
5673 | break_command_really (address, condition, thread, |
5674 | 0 /* condition and thread are valid. */, | |
5675 | tempflag, hardwareflag, | |
5676 | ignore_count, | |
5677 | pending | |
5678 | ? AUTO_BOOLEAN_TRUE : AUTO_BOOLEAN_FALSE, | |
604133b5 | 5679 | NULL, 0); |
c3f6f71d JM |
5680 | } |
5681 | ||
6a048695 JB |
5682 | /* Adjust SAL to the first instruction past the function prologue. |
5683 | The end of the prologue is determined using the line table from | |
5684 | the debugging information. | |
5685 | ||
5686 | If SAL is already past the prologue, then do nothing. */ | |
5687 | ||
5688 | static void | |
5689 | skip_prologue_sal (struct symtab_and_line *sal) | |
5690 | { | |
5691 | struct symbol *sym = find_pc_function (sal->pc); | |
5692 | struct symtab_and_line start_sal; | |
5693 | ||
5694 | if (sym == NULL) | |
5695 | return; | |
5696 | ||
5697 | start_sal = find_function_start_sal (sym, 1); | |
5698 | if (sal->pc < start_sal.pc) | |
5699 | *sal = start_sal; | |
5700 | } | |
c3f6f71d | 5701 | |
c906108c SS |
5702 | /* Helper function for break_command_1 and disassemble_command. */ |
5703 | ||
5704 | void | |
fba45db2 | 5705 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
5706 | { |
5707 | CORE_ADDR pc; | |
5708 | ||
5709 | if (sal->pc == 0 && sal->symtab != NULL) | |
5710 | { | |
5711 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 5712 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
5713 | sal->line, sal->symtab->filename); |
5714 | sal->pc = pc; | |
6a048695 JB |
5715 | |
5716 | /* If this SAL corresponds to a breakpoint inserted using | |
5717 | a line number, then skip the function prologue if necessary. */ | |
5718 | if (sal->explicit_line) | |
5719 | skip_prologue_sal (sal); | |
c906108c SS |
5720 | } |
5721 | ||
5722 | if (sal->section == 0 && sal->symtab != NULL) | |
5723 | { | |
5724 | struct blockvector *bv; | |
c5aa993b JM |
5725 | struct block *b; |
5726 | struct symbol *sym; | |
c906108c | 5727 | |
801e3a5b | 5728 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
5729 | if (bv != NULL) |
5730 | { | |
7f0df278 | 5731 | sym = block_linkage_function (b); |
c906108c SS |
5732 | if (sym != NULL) |
5733 | { | |
5734 | fixup_symbol_section (sym, sal->symtab->objfile); | |
714835d5 | 5735 | sal->section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
5736 | } |
5737 | else | |
5738 | { | |
5739 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
5740 | have to look harder. This case can be executed if we have |
5741 | line numbers but no functions (as can happen in assembly | |
5742 | source). */ | |
c906108c | 5743 | |
c5aa993b | 5744 | struct minimal_symbol *msym; |
c906108c SS |
5745 | |
5746 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
5747 | if (msym) | |
714835d5 | 5748 | sal->section = SYMBOL_OBJ_SECTION (msym); |
c906108c SS |
5749 | } |
5750 | } | |
5751 | } | |
5752 | } | |
5753 | ||
5754 | void | |
fba45db2 | 5755 | break_command (char *arg, int from_tty) |
c906108c | 5756 | { |
db107f19 | 5757 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
5758 | } |
5759 | ||
c906108c | 5760 | void |
fba45db2 | 5761 | tbreak_command (char *arg, int from_tty) |
c906108c | 5762 | { |
db107f19 | 5763 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
5764 | } |
5765 | ||
c906108c | 5766 | static void |
fba45db2 | 5767 | hbreak_command (char *arg, int from_tty) |
c906108c | 5768 | { |
db107f19 | 5769 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
5770 | } |
5771 | ||
5772 | static void | |
fba45db2 | 5773 | thbreak_command (char *arg, int from_tty) |
c906108c | 5774 | { |
db107f19 | 5775 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
5776 | } |
5777 | ||
5778 | static void | |
fba45db2 | 5779 | stop_command (char *arg, int from_tty) |
c906108c | 5780 | { |
a3f17187 | 5781 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 5782 | Usage: stop in <function | address>\n\ |
a3f17187 | 5783 | stop at <line>\n")); |
c906108c SS |
5784 | } |
5785 | ||
5786 | static void | |
fba45db2 | 5787 | stopin_command (char *arg, int from_tty) |
c906108c SS |
5788 | { |
5789 | int badInput = 0; | |
5790 | ||
c5aa993b | 5791 | if (arg == (char *) NULL) |
c906108c SS |
5792 | badInput = 1; |
5793 | else if (*arg != '*') | |
5794 | { | |
5795 | char *argptr = arg; | |
5796 | int hasColon = 0; | |
5797 | ||
53a5351d JM |
5798 | /* look for a ':'. If this is a line number specification, then |
5799 | say it is bad, otherwise, it should be an address or | |
5800 | function/method name */ | |
c906108c | 5801 | while (*argptr && !hasColon) |
c5aa993b JM |
5802 | { |
5803 | hasColon = (*argptr == ':'); | |
5804 | argptr++; | |
5805 | } | |
c906108c SS |
5806 | |
5807 | if (hasColon) | |
c5aa993b | 5808 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 5809 | else |
c5aa993b | 5810 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
5811 | } |
5812 | ||
5813 | if (badInput) | |
a3f17187 | 5814 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 5815 | else |
db107f19 | 5816 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
5817 | } |
5818 | ||
5819 | static void | |
fba45db2 | 5820 | stopat_command (char *arg, int from_tty) |
c906108c SS |
5821 | { |
5822 | int badInput = 0; | |
5823 | ||
c5aa993b | 5824 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
5825 | badInput = 1; |
5826 | else | |
5827 | { | |
5828 | char *argptr = arg; | |
5829 | int hasColon = 0; | |
5830 | ||
5831 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 5832 | it is probably a line number. */ |
c906108c | 5833 | while (*argptr && !hasColon) |
c5aa993b JM |
5834 | { |
5835 | hasColon = (*argptr == ':'); | |
5836 | argptr++; | |
5837 | } | |
c906108c SS |
5838 | |
5839 | if (hasColon) | |
c5aa993b | 5840 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 5841 | else |
c5aa993b | 5842 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
5843 | } |
5844 | ||
5845 | if (badInput) | |
a3f17187 | 5846 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 5847 | else |
db107f19 | 5848 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
5849 | } |
5850 | ||
53a5351d JM |
5851 | /* accessflag: hw_write: watch write, |
5852 | hw_read: watch read, | |
5853 | hw_access: watch access (read or write) */ | |
c906108c | 5854 | static void |
fba45db2 | 5855 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c | 5856 | { |
d983da9c | 5857 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c SS |
5858 | struct symtab_and_line sal; |
5859 | struct expression *exp; | |
5860 | struct block *exp_valid_block; | |
5861 | struct value *val, *mark; | |
5862 | struct frame_info *frame; | |
5863 | struct frame_info *prev_frame = NULL; | |
5864 | char *exp_start = NULL; | |
5865 | char *exp_end = NULL; | |
37e4754d | 5866 | char *tok, *id_tok_start, *end_tok; |
c906108c SS |
5867 | int toklen; |
5868 | char *cond_start = NULL; | |
5869 | char *cond_end = NULL; | |
5870 | struct expression *cond = NULL; | |
5871 | int i, other_type_used, target_resources_ok = 0; | |
5872 | enum bptype bp_type; | |
5873 | int mem_cnt = 0; | |
37e4754d | 5874 | int thread = -1; |
c906108c | 5875 | |
fe39c653 | 5876 | init_sal (&sal); /* initialize to zeroes */ |
c5aa993b | 5877 | |
37e4754d LM |
5878 | /* Make sure that we actually have parameters to parse. */ |
5879 | if (arg != NULL && arg[0] != '\0') | |
5880 | { | |
5881 | toklen = strlen (arg); /* Size of argument list. */ | |
5882 | ||
5883 | /* Points tok to the end of the argument list. */ | |
5884 | tok = arg + toklen - 1; | |
5885 | ||
5886 | /* Go backwards in the parameters list. Skip the last parameter. | |
5887 | If we're expecting a 'thread <thread_num>' parameter, this should | |
5888 | be the thread identifier. */ | |
5889 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
5890 | tok--; | |
5891 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
5892 | tok--; | |
5893 | ||
5894 | /* Points end_tok to the beginning of the last token. */ | |
5895 | id_tok_start = tok + 1; | |
5896 | ||
5897 | /* Go backwards in the parameters list. Skip one more parameter. | |
5898 | If we're expecting a 'thread <thread_num>' parameter, we should | |
5899 | reach a "thread" token. */ | |
5900 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
5901 | tok--; | |
5902 | ||
5903 | end_tok = tok; | |
5904 | ||
5905 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
5906 | tok--; | |
5907 | ||
5908 | /* Move the pointer forward to skip the whitespace and | |
5909 | calculate the length of the token. */ | |
5910 | tok++; | |
5911 | toklen = end_tok - tok; | |
5912 | ||
5913 | if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5914 | { | |
5915 | /* At this point we've found a "thread" token, which means | |
5916 | the user is trying to set a watchpoint that triggers | |
5917 | only in a specific thread. */ | |
5918 | char *endp; | |
5919 | ||
5920 | /* Extract the thread ID from the next token. */ | |
5921 | thread = strtol (id_tok_start, &endp, 0); | |
5922 | ||
5923 | /* Check if the user provided a valid numeric value for the | |
5924 | thread ID. */ | |
5925 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
5926 | error (_("Invalid thread ID specification %s."), id_tok_start); | |
5927 | ||
5928 | /* Check if the thread actually exists. */ | |
5929 | if (!valid_thread_id (thread)) | |
5930 | error (_("Unknown thread %d."), thread); | |
5931 | ||
5932 | /* Truncate the string and get rid of the thread <thread_num> | |
5933 | parameter before the parameter list is parsed by the | |
5934 | evaluate_expression() function. */ | |
5935 | *tok = '\0'; | |
5936 | } | |
5937 | } | |
5938 | ||
5939 | /* Parse the rest of the arguments. */ | |
c906108c SS |
5940 | innermost_block = NULL; |
5941 | exp_start = arg; | |
5942 | exp = parse_exp_1 (&arg, 0, 0); | |
5943 | exp_end = arg; | |
5944 | exp_valid_block = innermost_block; | |
5945 | mark = value_mark (); | |
fa4727a6 DJ |
5946 | fetch_watchpoint_value (exp, &val, NULL, NULL); |
5947 | if (val != NULL) | |
5948 | release_value (val); | |
c906108c SS |
5949 | |
5950 | tok = arg; | |
5951 | while (*tok == ' ' || *tok == '\t') | |
5952 | tok++; | |
5953 | end_tok = tok; | |
5954 | ||
5955 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5956 | end_tok++; | |
5957 | ||
5958 | toklen = end_tok - tok; | |
5959 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5960 | { | |
5961 | tok = cond_start = end_tok + 1; | |
5962 | cond = parse_exp_1 (&tok, 0, 0); | |
5963 | cond_end = tok; | |
5964 | } | |
5965 | if (*tok) | |
8a3fe4f8 | 5966 | error (_("Junk at end of command.")); |
c906108c | 5967 | |
53a5351d | 5968 | if (accessflag == hw_read) |
c5aa993b | 5969 | bp_type = bp_read_watchpoint; |
53a5351d | 5970 | else if (accessflag == hw_access) |
c5aa993b JM |
5971 | bp_type = bp_access_watchpoint; |
5972 | else | |
5973 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
5974 | |
5975 | mem_cnt = can_use_hardware_watchpoint (val); | |
5976 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
8a3fe4f8 | 5977 | error (_("Expression cannot be implemented with read/access watchpoint.")); |
c5aa993b JM |
5978 | if (mem_cnt != 0) |
5979 | { | |
5980 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d JM |
5981 | target_resources_ok = |
5982 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type, i + mem_cnt, | |
5983 | other_type_used); | |
c5aa993b | 5984 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 5985 | error (_("Target does not support this type of hardware watchpoint.")); |
53a5351d | 5986 | |
c5aa993b | 5987 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 5988 | error (_("Target can only support one kind of HW watchpoint at a time.")); |
c5aa993b | 5989 | } |
c906108c | 5990 | |
4d28f7a8 KB |
5991 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
5992 | watchpoint could not be set. */ | |
5993 | if (!mem_cnt || target_resources_ok <= 0) | |
5994 | bp_type = bp_watchpoint; | |
5995 | ||
d983da9c DJ |
5996 | frame = block_innermost_frame (exp_valid_block); |
5997 | if (frame) | |
5998 | prev_frame = get_prev_frame (frame); | |
5999 | else | |
6000 | prev_frame = NULL; | |
6001 | ||
6002 | /* If the expression is "local", then set up a "watchpoint scope" | |
6003 | breakpoint at the point where we've left the scope of the watchpoint | |
6004 | expression. Create the scope breakpoint before the watchpoint, so | |
6005 | that we will encounter it first in bpstat_stop_status. */ | |
6006 | if (innermost_block && prev_frame) | |
6007 | { | |
6008 | scope_breakpoint = create_internal_breakpoint (get_frame_pc (prev_frame), | |
6009 | bp_watchpoint_scope); | |
6010 | ||
6011 | scope_breakpoint->enable_state = bp_enabled; | |
6012 | ||
6013 | /* Automatically delete the breakpoint when it hits. */ | |
6014 | scope_breakpoint->disposition = disp_del; | |
6015 | ||
6016 | /* Only break in the proper frame (help with recursion). */ | |
6017 | scope_breakpoint->frame_id = get_frame_id (prev_frame); | |
6018 | ||
6019 | /* Set the address at which we will stop. */ | |
6020 | scope_breakpoint->loc->requested_address | |
6021 | = get_frame_pc (prev_frame); | |
6022 | scope_breakpoint->loc->address | |
6023 | = adjust_breakpoint_address (scope_breakpoint->loc->requested_address, | |
6024 | scope_breakpoint->type); | |
6025 | } | |
6026 | ||
c906108c | 6027 | /* Now set up the breakpoint. */ |
4d28f7a8 | 6028 | b = set_raw_breakpoint (sal, bp_type); |
c906108c SS |
6029 | set_breakpoint_count (breakpoint_count + 1); |
6030 | b->number = breakpoint_count; | |
37e4754d | 6031 | b->thread = thread; |
b5de0fa7 | 6032 | b->disposition = disp_donttouch; |
c906108c SS |
6033 | b->exp = exp; |
6034 | b->exp_valid_block = exp_valid_block; | |
6035 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
6036 | b->val = val; | |
fa4727a6 | 6037 | b->val_valid = 1; |
511a6cd4 | 6038 | b->loc->cond = cond; |
c906108c SS |
6039 | if (cond_start) |
6040 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
6041 | else | |
6042 | b->cond_string = 0; | |
c5aa993b | 6043 | |
c906108c | 6044 | if (frame) |
d983da9c | 6045 | b->watchpoint_frame = get_frame_id (frame); |
c906108c | 6046 | else |
35a487f1 | 6047 | b->watchpoint_frame = null_frame_id; |
c906108c | 6048 | |
d983da9c | 6049 | if (scope_breakpoint != NULL) |
c906108c | 6050 | { |
d983da9c DJ |
6051 | /* The scope breakpoint is related to the watchpoint. We will |
6052 | need to act on them together. */ | |
6053 | b->related_breakpoint = scope_breakpoint; | |
6054 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 6055 | } |
d983da9c | 6056 | |
c906108c SS |
6057 | value_free_to_mark (mark); |
6058 | mention (b); | |
b60e7edf | 6059 | update_global_location_list (1); |
c906108c SS |
6060 | } |
6061 | ||
6062 | /* Return count of locations need to be watched and can be handled | |
6063 | in hardware. If the watchpoint can not be handled | |
6064 | in hardware return zero. */ | |
6065 | ||
c906108c | 6066 | static int |
fba45db2 | 6067 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
6068 | { |
6069 | int found_memory_cnt = 0; | |
2e70b7b9 | 6070 | struct value *head = v; |
c906108c SS |
6071 | |
6072 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 6073 | if (!can_use_hw_watchpoints) |
c906108c | 6074 | return 0; |
c5aa993b | 6075 | |
5c44784c JM |
6076 | /* Make sure that the value of the expression depends only upon |
6077 | memory contents, and values computed from them within GDB. If we | |
6078 | find any register references or function calls, we can't use a | |
6079 | hardware watchpoint. | |
6080 | ||
6081 | The idea here is that evaluating an expression generates a series | |
6082 | of values, one holding the value of every subexpression. (The | |
6083 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
6084 | a*b+c.) GDB's values hold almost enough information to establish | |
6085 | the criteria given above --- they identify memory lvalues, | |
6086 | register lvalues, computed values, etcetera. So we can evaluate | |
6087 | the expression, and then scan the chain of values that leaves | |
6088 | behind to decide whether we can detect any possible change to the | |
6089 | expression's final value using only hardware watchpoints. | |
6090 | ||
6091 | However, I don't think that the values returned by inferior | |
6092 | function calls are special in any way. So this function may not | |
6093 | notice that an expression involving an inferior function call | |
6094 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 6095 | for (; v; v = value_next (v)) |
c906108c | 6096 | { |
5c44784c | 6097 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 6098 | { |
d69fe07e | 6099 | if (value_lazy (v)) |
5c44784c JM |
6100 | /* A lazy memory lvalue is one that GDB never needed to fetch; |
6101 | we either just used its address (e.g., `a' in `a.b') or | |
6102 | we never needed it at all (e.g., `a' in `a,b'). */ | |
6103 | ; | |
53a5351d | 6104 | else |
5c44784c JM |
6105 | { |
6106 | /* Ahh, memory we actually used! Check if we can cover | |
6107 | it with hardware watchpoints. */ | |
df407dfe | 6108 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
6109 | |
6110 | /* We only watch structs and arrays if user asked for it | |
6111 | explicitly, never if they just happen to appear in a | |
6112 | middle of some value chain. */ | |
6113 | if (v == head | |
6114 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
6115 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
6116 | { | |
df407dfe AC |
6117 | CORE_ADDR vaddr = VALUE_ADDRESS (v) + value_offset (v); |
6118 | int len = TYPE_LENGTH (value_type (v)); | |
2e70b7b9 MS |
6119 | |
6120 | if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len)) | |
6121 | return 0; | |
6122 | else | |
6123 | found_memory_cnt++; | |
6124 | } | |
5c44784c | 6125 | } |
c5aa993b | 6126 | } |
5086187c AC |
6127 | else if (VALUE_LVAL (v) != not_lval |
6128 | && deprecated_value_modifiable (v) == 0) | |
53a5351d | 6129 | return 0; /* ??? What does this represent? */ |
5086187c | 6130 | else if (VALUE_LVAL (v) == lval_register) |
53a5351d | 6131 | return 0; /* cannot watch a register with a HW watchpoint */ |
c906108c SS |
6132 | } |
6133 | ||
6134 | /* The expression itself looks suitable for using a hardware | |
6135 | watchpoint, but give the target machine a chance to reject it. */ | |
6136 | return found_memory_cnt; | |
6137 | } | |
6138 | ||
8b93c638 | 6139 | void |
fba45db2 | 6140 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6141 | { |
6142 | watch_command (arg, from_tty); | |
6143 | } | |
8926118c | 6144 | |
c5aa993b | 6145 | static void |
fba45db2 | 6146 | watch_command (char *arg, int from_tty) |
c906108c | 6147 | { |
53a5351d | 6148 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
6149 | } |
6150 | ||
8b93c638 | 6151 | void |
fba45db2 | 6152 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6153 | { |
6154 | rwatch_command (arg, from_tty); | |
6155 | } | |
8926118c | 6156 | |
c5aa993b | 6157 | static void |
fba45db2 | 6158 | rwatch_command (char *arg, int from_tty) |
c906108c | 6159 | { |
53a5351d | 6160 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
6161 | } |
6162 | ||
8b93c638 | 6163 | void |
fba45db2 | 6164 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6165 | { |
6166 | awatch_command (arg, from_tty); | |
6167 | } | |
8926118c | 6168 | |
c5aa993b | 6169 | static void |
fba45db2 | 6170 | awatch_command (char *arg, int from_tty) |
c906108c | 6171 | { |
53a5351d | 6172 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 6173 | } |
c906108c | 6174 | \f |
c5aa993b | 6175 | |
43ff13b4 | 6176 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
6177 | because it uses the mechanisms of breakpoints. */ |
6178 | ||
bfec99b2 PA |
6179 | struct until_break_command_continuation_args |
6180 | { | |
6181 | struct breakpoint *breakpoint; | |
6182 | struct breakpoint *breakpoint2; | |
6183 | }; | |
6184 | ||
43ff13b4 JM |
6185 | /* This function is called by fetch_inferior_event via the |
6186 | cmd_continuation pointer, to complete the until command. It takes | |
6187 | care of cleaning up the temporary breakpoints set up by the until | |
6188 | command. */ | |
c2c6d25f | 6189 | static void |
604ead4a | 6190 | until_break_command_continuation (void *arg) |
43ff13b4 | 6191 | { |
bfec99b2 PA |
6192 | struct until_break_command_continuation_args *a = arg; |
6193 | ||
6194 | delete_breakpoint (a->breakpoint); | |
6195 | if (a->breakpoint2) | |
6196 | delete_breakpoint (a->breakpoint2); | |
43ff13b4 JM |
6197 | } |
6198 | ||
c906108c | 6199 | void |
ae66c1fc | 6200 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
6201 | { |
6202 | struct symtabs_and_lines sals; | |
6203 | struct symtab_and_line sal; | |
206415a3 DJ |
6204 | struct frame_info *frame = get_selected_frame (NULL); |
6205 | struct frame_info *prev_frame = get_prev_frame (frame); | |
c906108c | 6206 | struct breakpoint *breakpoint; |
f107f563 | 6207 | struct breakpoint *breakpoint2 = NULL; |
c906108c SS |
6208 | struct cleanup *old_chain; |
6209 | ||
6210 | clear_proceed_status (); | |
6211 | ||
6212 | /* Set a breakpoint where the user wants it and at return from | |
6213 | this function */ | |
c5aa993b | 6214 | |
c906108c SS |
6215 | if (default_breakpoint_valid) |
6216 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 6217 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 6218 | else |
53a5351d | 6219 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 6220 | 0, (char ***) NULL, NULL); |
c5aa993b | 6221 | |
c906108c | 6222 | if (sals.nelts != 1) |
8a3fe4f8 | 6223 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 6224 | |
c906108c | 6225 | sal = sals.sals[0]; |
b8c9b27d | 6226 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 6227 | |
c906108c | 6228 | if (*arg) |
8a3fe4f8 | 6229 | error (_("Junk at end of arguments.")); |
c5aa993b | 6230 | |
c906108c | 6231 | resolve_sal_pc (&sal); |
c5aa993b | 6232 | |
ae66c1fc EZ |
6233 | if (anywhere) |
6234 | /* If the user told us to continue until a specified location, | |
6235 | we don't specify a frame at which we need to stop. */ | |
6236 | breakpoint = set_momentary_breakpoint (sal, null_frame_id, bp_until); | |
6237 | else | |
6238 | /* Otherwise, specify the current frame, because we want to stop only | |
6239 | at the very same frame. */ | |
206415a3 | 6240 | breakpoint = set_momentary_breakpoint (sal, get_frame_id (frame), |
ae66c1fc | 6241 | bp_until); |
c5aa993b | 6242 | |
f107f563 | 6243 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
c906108c | 6244 | |
ae66c1fc EZ |
6245 | /* Keep within the current frame, or in frames called by the current |
6246 | one. */ | |
c906108c SS |
6247 | if (prev_frame) |
6248 | { | |
30f7db39 AC |
6249 | sal = find_pc_line (get_frame_pc (prev_frame), 0); |
6250 | sal.pc = get_frame_pc (prev_frame); | |
f107f563 VP |
6251 | breakpoint2 = set_momentary_breakpoint (sal, get_frame_id (prev_frame), |
6252 | bp_until); | |
6253 | make_cleanup_delete_breakpoint (breakpoint2); | |
c906108c | 6254 | } |
c5aa993b | 6255 | |
c906108c | 6256 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
f107f563 VP |
6257 | |
6258 | /* If we are running asynchronously, and proceed call above has actually | |
6259 | managed to start the target, arrange for breakpoints to be | |
6260 | deleted when the target stops. Otherwise, we're already stopped and | |
6261 | delete breakpoints via cleanup chain. */ | |
6262 | ||
8ea051c5 | 6263 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 6264 | { |
bfec99b2 PA |
6265 | struct until_break_command_continuation_args *args; |
6266 | args = xmalloc (sizeof (*args)); | |
f107f563 | 6267 | |
bfec99b2 PA |
6268 | args->breakpoint = breakpoint; |
6269 | args->breakpoint2 = breakpoint2; | |
f107f563 VP |
6270 | |
6271 | discard_cleanups (old_chain); | |
95e54da7 PA |
6272 | add_continuation (inferior_thread (), |
6273 | until_break_command_continuation, args, | |
604ead4a | 6274 | xfree); |
f107f563 VP |
6275 | } |
6276 | else | |
c5aa993b | 6277 | do_cleanups (old_chain); |
c906108c | 6278 | } |
ae66c1fc | 6279 | |
c906108c | 6280 | static void |
fba45db2 | 6281 | ep_skip_leading_whitespace (char **s) |
c906108c | 6282 | { |
c5aa993b JM |
6283 | if ((s == NULL) || (*s == NULL)) |
6284 | return; | |
6285 | while (isspace (**s)) | |
6286 | *s += 1; | |
c906108c | 6287 | } |
c5aa993b | 6288 | |
c906108c SS |
6289 | /* This function attempts to parse an optional "if <cond>" clause |
6290 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 6291 | |
c906108c SS |
6292 | Else, it returns a pointer to the condition string. (It does not |
6293 | attempt to evaluate the string against a particular block.) And, | |
6294 | it updates arg to point to the first character following the parsed | |
6295 | if clause in the arg string. */ | |
53a5351d | 6296 | |
c906108c | 6297 | static char * |
fba45db2 | 6298 | ep_parse_optional_if_clause (char **arg) |
c906108c | 6299 | { |
c5aa993b JM |
6300 | char *cond_string; |
6301 | ||
6302 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 6303 | return NULL; |
c5aa993b | 6304 | |
c906108c SS |
6305 | /* Skip the "if" keyword. */ |
6306 | (*arg) += 2; | |
c5aa993b | 6307 | |
c906108c SS |
6308 | /* Skip any extra leading whitespace, and record the start of the |
6309 | condition string. */ | |
6310 | ep_skip_leading_whitespace (arg); | |
6311 | cond_string = *arg; | |
c5aa993b | 6312 | |
c906108c SS |
6313 | /* Assume that the condition occupies the remainder of the arg string. */ |
6314 | (*arg) += strlen (cond_string); | |
c5aa993b | 6315 | |
c906108c SS |
6316 | return cond_string; |
6317 | } | |
c5aa993b | 6318 | |
c906108c SS |
6319 | /* This function attempts to parse an optional filename from the arg |
6320 | string. If one is not found, it returns NULL. | |
c5aa993b | 6321 | |
c906108c SS |
6322 | Else, it returns a pointer to the parsed filename. (This function |
6323 | makes no attempt to verify that a file of that name exists, or is | |
6324 | accessible.) And, it updates arg to point to the first character | |
6325 | following the parsed filename in the arg string. | |
c5aa993b | 6326 | |
c906108c SS |
6327 | Note that clients needing to preserve the returned filename for |
6328 | future access should copy it to their own buffers. */ | |
6329 | static char * | |
fba45db2 | 6330 | ep_parse_optional_filename (char **arg) |
c906108c | 6331 | { |
c5aa993b JM |
6332 | static char filename[1024]; |
6333 | char *arg_p = *arg; | |
6334 | int i; | |
6335 | char c; | |
6336 | ||
c906108c SS |
6337 | if ((*arg_p == '\0') || isspace (*arg_p)) |
6338 | return NULL; | |
c5aa993b JM |
6339 | |
6340 | for (i = 0;; i++) | |
c906108c SS |
6341 | { |
6342 | c = *arg_p; | |
6343 | if (isspace (c)) | |
c5aa993b | 6344 | c = '\0'; |
c906108c SS |
6345 | filename[i] = c; |
6346 | if (c == '\0') | |
c5aa993b | 6347 | break; |
c906108c SS |
6348 | arg_p++; |
6349 | } | |
6350 | *arg = arg_p; | |
c5aa993b | 6351 | |
c906108c SS |
6352 | return filename; |
6353 | } | |
c5aa993b | 6354 | |
c906108c SS |
6355 | /* Commands to deal with catching events, such as signals, exceptions, |
6356 | process start/exit, etc. */ | |
c5aa993b JM |
6357 | |
6358 | typedef enum | |
6359 | { | |
44feb3ce TT |
6360 | catch_fork_temporary, catch_vfork_temporary, |
6361 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
6362 | } |
6363 | catch_fork_kind; | |
6364 | ||
c906108c | 6365 | static void |
44feb3ce | 6366 | catch_fork_command_1 (char *arg, int from_tty, struct cmd_list_element *command) |
c906108c | 6367 | { |
c5aa993b | 6368 | char *cond_string = NULL; |
44feb3ce TT |
6369 | catch_fork_kind fork_kind; |
6370 | int tempflag; | |
6371 | ||
6372 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
6373 | tempflag = (fork_kind == catch_fork_temporary | |
6374 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 6375 | |
44feb3ce TT |
6376 | if (!arg) |
6377 | arg = ""; | |
c906108c | 6378 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6379 | |
c906108c | 6380 | /* The allowed syntax is: |
c5aa993b JM |
6381 | catch [v]fork |
6382 | catch [v]fork if <cond> | |
6383 | ||
c906108c SS |
6384 | First, check if there's an if clause. */ |
6385 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6386 | |
c906108c | 6387 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6388 | error (_("Junk at end of arguments.")); |
c5aa993b | 6389 | |
c906108c SS |
6390 | /* If this target supports it, create a fork or vfork catchpoint |
6391 | and enable reporting of such events. */ | |
c5aa993b JM |
6392 | switch (fork_kind) |
6393 | { | |
44feb3ce TT |
6394 | case catch_fork_temporary: |
6395 | case catch_fork_permanent: | |
ce78b96d JB |
6396 | create_fork_vfork_event_catchpoint (tempflag, cond_string, |
6397 | &catch_fork_breakpoint_ops); | |
c906108c | 6398 | break; |
44feb3ce TT |
6399 | case catch_vfork_temporary: |
6400 | case catch_vfork_permanent: | |
ce78b96d JB |
6401 | create_fork_vfork_event_catchpoint (tempflag, cond_string, |
6402 | &catch_vfork_breakpoint_ops); | |
c906108c | 6403 | break; |
c5aa993b | 6404 | default: |
8a3fe4f8 | 6405 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 6406 | break; |
c5aa993b | 6407 | } |
c906108c SS |
6408 | } |
6409 | ||
6410 | static void | |
44feb3ce | 6411 | catch_exec_command_1 (char *arg, int from_tty, struct cmd_list_element *command) |
c906108c | 6412 | { |
44feb3ce | 6413 | int tempflag; |
c5aa993b | 6414 | char *cond_string = NULL; |
c906108c | 6415 | |
44feb3ce TT |
6416 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
6417 | ||
6418 | if (!arg) | |
6419 | arg = ""; | |
c906108c SS |
6420 | ep_skip_leading_whitespace (&arg); |
6421 | ||
6422 | /* The allowed syntax is: | |
c5aa993b JM |
6423 | catch exec |
6424 | catch exec if <cond> | |
c906108c SS |
6425 | |
6426 | First, check if there's an if clause. */ | |
6427 | cond_string = ep_parse_optional_if_clause (&arg); | |
6428 | ||
6429 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6430 | error (_("Junk at end of arguments.")); |
c906108c SS |
6431 | |
6432 | /* If this target supports it, create an exec catchpoint | |
6433 | and enable reporting of such events. */ | |
fe798b75 | 6434 | create_catchpoint (tempflag, cond_string, &catch_exec_breakpoint_ops); |
c906108c | 6435 | } |
c5aa993b | 6436 | |
3086aeae DJ |
6437 | static enum print_stop_action |
6438 | print_exception_catchpoint (struct breakpoint *b) | |
6439 | { | |
ade92717 | 6440 | int bp_temp, bp_throw; |
3086aeae | 6441 | |
ade92717 | 6442 | annotate_catchpoint (b->number); |
3086aeae | 6443 | |
ade92717 AR |
6444 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
6445 | if (b->loc->address != b->loc->requested_address) | |
6446 | breakpoint_adjustment_warning (b->loc->requested_address, | |
6447 | b->loc->address, | |
6448 | b->number, 1); | |
6449 | bp_temp = b->loc->owner->disposition == disp_del; | |
6450 | ui_out_text (uiout, | |
6451 | bp_temp ? "Temporary catchpoint " | |
6452 | : "Catchpoint "); | |
6453 | if (!ui_out_is_mi_like_p (uiout)) | |
6454 | ui_out_field_int (uiout, "bkptno", b->number); | |
6455 | ui_out_text (uiout, | |
c0b37c48 AR |
6456 | bp_throw ? " (exception thrown), " |
6457 | : " (exception caught), "); | |
ade92717 AR |
6458 | if (ui_out_is_mi_like_p (uiout)) |
6459 | { | |
6460 | ui_out_field_string (uiout, "reason", | |
6461 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
6462 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
6463 | ui_out_field_int (uiout, "bkptno", b->number); | |
6464 | } | |
3086aeae DJ |
6465 | return PRINT_SRC_AND_LOC; |
6466 | } | |
6467 | ||
6468 | static void | |
6469 | print_one_exception_catchpoint (struct breakpoint *b, CORE_ADDR *last_addr) | |
6470 | { | |
79a45b7d TT |
6471 | struct value_print_options opts; |
6472 | get_user_print_options (&opts); | |
6473 | if (opts.addressprint) | |
3086aeae DJ |
6474 | { |
6475 | annotate_field (4); | |
604133b5 AR |
6476 | if (b->loc == NULL || b->loc->shlib_disabled) |
6477 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
6478 | else | |
6479 | ui_out_field_core_addr (uiout, "addr", b->loc->address); | |
3086aeae DJ |
6480 | } |
6481 | annotate_field (5); | |
604133b5 AR |
6482 | if (b->loc) |
6483 | *last_addr = b->loc->address; | |
3086aeae DJ |
6484 | if (strstr (b->addr_string, "throw") != NULL) |
6485 | ui_out_field_string (uiout, "what", "exception throw"); | |
6486 | else | |
6487 | ui_out_field_string (uiout, "what", "exception catch"); | |
6488 | } | |
6489 | ||
6490 | static void | |
6491 | print_mention_exception_catchpoint (struct breakpoint *b) | |
6492 | { | |
ade92717 AR |
6493 | int bp_temp; |
6494 | int bp_throw; | |
6495 | ||
6496 | bp_temp = b->loc->owner->disposition == disp_del; | |
6497 | bp_throw = strstr (b->addr_string, "throw") != NULL; | |
6498 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
6499 | : _("Catchpoint ")); | |
6500 | ui_out_field_int (uiout, "bkptno", b->number); | |
6501 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
6502 | : _(" (catch)")); | |
3086aeae DJ |
6503 | } |
6504 | ||
6505 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { | |
ce78b96d JB |
6506 | NULL, /* insert */ |
6507 | NULL, /* remove */ | |
6508 | NULL, /* breakpoint_hit */ | |
3086aeae DJ |
6509 | print_exception_catchpoint, |
6510 | print_one_exception_catchpoint, | |
6511 | print_mention_exception_catchpoint | |
6512 | }; | |
6513 | ||
6514 | static int | |
6515 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
6516 | enum exception_event_kind ex_event, int from_tty) | |
6517 | { | |
604133b5 AR |
6518 | char *trigger_func_name; |
6519 | ||
3086aeae | 6520 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 6521 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 6522 | else |
604133b5 | 6523 | trigger_func_name = "__cxa_throw"; |
3086aeae | 6524 | |
604133b5 AR |
6525 | break_command_really (trigger_func_name, cond_string, -1, |
6526 | 0 /* condition and thread are valid. */, | |
ade92717 | 6527 | tempflag, 0, |
604133b5 AR |
6528 | 0, |
6529 | AUTO_BOOLEAN_TRUE /* pending */, | |
6530 | &gnu_v3_exception_catchpoint_ops, from_tty); | |
3086aeae | 6531 | |
3086aeae DJ |
6532 | return 1; |
6533 | } | |
6534 | ||
c5aa993b | 6535 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
6536 | |
6537 | static void | |
fba45db2 KB |
6538 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
6539 | int tempflag, int from_tty) | |
c906108c | 6540 | { |
c5aa993b JM |
6541 | char *cond_string = NULL; |
6542 | struct symtab_and_line *sal = NULL; | |
6543 | ||
44feb3ce TT |
6544 | if (!arg) |
6545 | arg = ""; | |
c906108c | 6546 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6547 | |
c906108c SS |
6548 | cond_string = ep_parse_optional_if_clause (&arg); |
6549 | ||
6550 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6551 | error (_("Junk at end of arguments.")); |
c906108c SS |
6552 | |
6553 | if ((ex_event != EX_EVENT_THROW) && | |
6554 | (ex_event != EX_EVENT_CATCH)) | |
8a3fe4f8 | 6555 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 6556 | |
3086aeae DJ |
6557 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
6558 | return; | |
6559 | ||
8a3fe4f8 | 6560 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
6561 | } |
6562 | ||
44feb3ce TT |
6563 | /* Implementation of "catch catch" command. */ |
6564 | ||
6565 | static void | |
6566 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
6567 | { | |
6568 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
6569 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); | |
6570 | } | |
6571 | ||
6572 | /* Implementation of "catch throw" command. */ | |
6573 | ||
6574 | static void | |
6575 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
6576 | { | |
6577 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
6578 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); | |
6579 | } | |
6580 | ||
f7f9143b JB |
6581 | /* Create a breakpoint struct for Ada exception catchpoints. */ |
6582 | ||
6583 | static void | |
6584 | create_ada_exception_breakpoint (struct symtab_and_line sal, | |
6585 | char *addr_string, | |
6586 | char *exp_string, | |
6587 | char *cond_string, | |
6588 | struct expression *cond, | |
6589 | struct breakpoint_ops *ops, | |
6590 | int tempflag, | |
6591 | int from_tty) | |
6592 | { | |
6593 | struct breakpoint *b; | |
6594 | ||
6595 | if (from_tty) | |
6596 | { | |
6597 | describe_other_breakpoints (sal.pc, sal.section, -1); | |
6598 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special | |
6599 | version for exception catchpoints, because two catchpoints | |
6600 | used for different exception names will use the same address. | |
6601 | In this case, a "breakpoint ... also set at..." warning is | |
6602 | unproductive. Besides. the warning phrasing is also a bit | |
6603 | inapropriate, we should use the word catchpoint, and tell | |
6604 | the user what type of catchpoint it is. The above is good | |
6605 | enough for now, though. */ | |
6606 | } | |
6607 | ||
6608 | b = set_raw_breakpoint (sal, bp_breakpoint); | |
6609 | set_breakpoint_count (breakpoint_count + 1); | |
6610 | ||
6611 | b->enable_state = bp_enabled; | |
6612 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
6613 | b->number = breakpoint_count; | |
6614 | b->ignore_count = 0; | |
511a6cd4 | 6615 | b->loc->cond = cond; |
f7f9143b JB |
6616 | b->addr_string = addr_string; |
6617 | b->language = language_ada; | |
6618 | b->cond_string = cond_string; | |
6619 | b->exp_string = exp_string; | |
6620 | b->thread = -1; | |
6621 | b->ops = ops; | |
f7f9143b JB |
6622 | |
6623 | mention (b); | |
b60e7edf | 6624 | update_global_location_list (1); |
f7f9143b JB |
6625 | } |
6626 | ||
6627 | /* Implement the "catch exception" command. */ | |
6628 | ||
6629 | static void | |
44feb3ce TT |
6630 | catch_ada_exception_command (char *arg, int from_tty, |
6631 | struct cmd_list_element *command) | |
f7f9143b | 6632 | { |
44feb3ce | 6633 | int tempflag; |
f7f9143b JB |
6634 | struct symtab_and_line sal; |
6635 | enum bptype type; | |
6636 | char *addr_string = NULL; | |
6637 | char *exp_string = NULL; | |
6638 | char *cond_string = NULL; | |
6639 | struct expression *cond = NULL; | |
6640 | struct breakpoint_ops *ops = NULL; | |
6641 | ||
44feb3ce TT |
6642 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
6643 | ||
6644 | if (!arg) | |
6645 | arg = ""; | |
f7f9143b JB |
6646 | sal = ada_decode_exception_location (arg, &addr_string, &exp_string, |
6647 | &cond_string, &cond, &ops); | |
6648 | create_ada_exception_breakpoint (sal, addr_string, exp_string, | |
6649 | cond_string, cond, ops, tempflag, | |
6650 | from_tty); | |
6651 | } | |
6652 | ||
6653 | /* Implement the "catch assert" command. */ | |
6654 | ||
6655 | static void | |
44feb3ce | 6656 | catch_assert_command (char *arg, int from_tty, struct cmd_list_element *command) |
f7f9143b | 6657 | { |
44feb3ce | 6658 | int tempflag; |
f7f9143b JB |
6659 | struct symtab_and_line sal; |
6660 | char *addr_string = NULL; | |
6661 | struct breakpoint_ops *ops = NULL; | |
6662 | ||
44feb3ce TT |
6663 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
6664 | ||
6665 | if (!arg) | |
6666 | arg = ""; | |
f7f9143b JB |
6667 | sal = ada_decode_assert_location (arg, &addr_string, &ops); |
6668 | create_ada_exception_breakpoint (sal, addr_string, NULL, NULL, NULL, ops, | |
6669 | tempflag, from_tty); | |
6670 | } | |
6671 | ||
c906108c | 6672 | static void |
fba45db2 | 6673 | catch_command (char *arg, int from_tty) |
c906108c | 6674 | { |
44feb3ce | 6675 | error (_("Catch requires an event name.")); |
c906108c SS |
6676 | } |
6677 | \f | |
6678 | ||
6679 | static void | |
fba45db2 | 6680 | tcatch_command (char *arg, int from_tty) |
c906108c | 6681 | { |
44feb3ce | 6682 | error (_("Catch requires an event name.")); |
c906108c SS |
6683 | } |
6684 | ||
80f8a6eb | 6685 | /* Delete breakpoints by address or line. */ |
c906108c SS |
6686 | |
6687 | static void | |
fba45db2 | 6688 | clear_command (char *arg, int from_tty) |
c906108c | 6689 | { |
d6e956e5 VP |
6690 | struct breakpoint *b; |
6691 | VEC(breakpoint_p) *found = 0; | |
6692 | int ix; | |
c906108c SS |
6693 | int default_match; |
6694 | struct symtabs_and_lines sals; | |
6695 | struct symtab_and_line sal; | |
c906108c SS |
6696 | int i; |
6697 | ||
6698 | if (arg) | |
6699 | { | |
6700 | sals = decode_line_spec (arg, 1); | |
6701 | default_match = 0; | |
6702 | } | |
6703 | else | |
6704 | { | |
c5aa993b | 6705 | sals.sals = (struct symtab_and_line *) |
c906108c | 6706 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 6707 | make_cleanup (xfree, sals.sals); |
fe39c653 | 6708 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
6709 | sal.line = default_breakpoint_line; |
6710 | sal.symtab = default_breakpoint_symtab; | |
6711 | sal.pc = default_breakpoint_address; | |
6712 | if (sal.symtab == 0) | |
8a3fe4f8 | 6713 | error (_("No source file specified.")); |
c906108c SS |
6714 | |
6715 | sals.sals[0] = sal; | |
6716 | sals.nelts = 1; | |
6717 | ||
6718 | default_match = 1; | |
6719 | } | |
6720 | ||
ed0616c6 VP |
6721 | /* We don't call resolve_sal_pc here. That's not |
6722 | as bad as it seems, because all existing breakpoints | |
6723 | typically have both file/line and pc set. So, if | |
6724 | clear is given file/line, we can match this to existing | |
6725 | breakpoint without obtaining pc at all. | |
6726 | ||
6727 | We only support clearing given the address explicitly | |
6728 | present in breakpoint table. Say, we've set breakpoint | |
6729 | at file:line. There were several PC values for that file:line, | |
6730 | due to optimization, all in one block. | |
6731 | We've picked one PC value. If "clear" is issued with another | |
6732 | PC corresponding to the same file:line, the breakpoint won't | |
6733 | be cleared. We probably can still clear the breakpoint, but | |
6734 | since the other PC value is never presented to user, user | |
6735 | can only find it by guessing, and it does not seem important | |
6736 | to support that. */ | |
6737 | ||
c906108c | 6738 | /* For each line spec given, delete bps which correspond |
80f8a6eb MS |
6739 | to it. Do it in two passes, solely to preserve the current |
6740 | behavior that from_tty is forced true if we delete more than | |
6741 | one breakpoint. */ | |
c906108c | 6742 | |
80f8a6eb | 6743 | found = NULL; |
c906108c SS |
6744 | for (i = 0; i < sals.nelts; i++) |
6745 | { | |
6746 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
6747 | If line given (pc == 0), clear all bpts on specified line. |
6748 | If defaulting, clear all bpts on default line | |
c906108c | 6749 | or at default pc. |
c5aa993b JM |
6750 | |
6751 | defaulting sal.pc != 0 tests to do | |
6752 | ||
6753 | 0 1 pc | |
6754 | 1 1 pc _and_ line | |
6755 | 0 0 line | |
6756 | 1 0 <can't happen> */ | |
c906108c SS |
6757 | |
6758 | sal = sals.sals[i]; | |
c906108c | 6759 | |
d6e956e5 VP |
6760 | /* Find all matching breakpoints and add them to |
6761 | 'found'. */ | |
6762 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6763 | { |
0d381245 | 6764 | int match = 0; |
80f8a6eb MS |
6765 | /* Are we going to delete b? */ |
6766 | if (b->type != bp_none | |
6767 | && b->type != bp_watchpoint | |
6768 | && b->type != bp_hardware_watchpoint | |
6769 | && b->type != bp_read_watchpoint | |
0d381245 VP |
6770 | && b->type != bp_access_watchpoint) |
6771 | { | |
6772 | struct bp_location *loc = b->loc; | |
6773 | for (; loc; loc = loc->next) | |
6774 | { | |
6775 | int pc_match = sal.pc | |
6776 | && (loc->address == sal.pc) | |
6777 | && (!section_is_overlay (loc->section) | |
6778 | || loc->section == sal.section); | |
6779 | int line_match = ((default_match || (0 == sal.pc)) | |
6780 | && b->source_file != NULL | |
6781 | && sal.symtab != NULL | |
6782 | && strcmp (b->source_file, sal.symtab->filename) == 0 | |
6783 | && b->line_number == sal.line); | |
6784 | if (pc_match || line_match) | |
6785 | { | |
6786 | match = 1; | |
6787 | break; | |
6788 | } | |
6789 | } | |
6790 | } | |
6791 | ||
6792 | if (match) | |
d6e956e5 | 6793 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 6794 | } |
80f8a6eb MS |
6795 | } |
6796 | /* Now go thru the 'found' chain and delete them. */ | |
d6e956e5 | 6797 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
6798 | { |
6799 | if (arg) | |
8a3fe4f8 | 6800 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 6801 | else |
8a3fe4f8 | 6802 | error (_("No breakpoint at this line.")); |
80f8a6eb | 6803 | } |
c906108c | 6804 | |
d6e956e5 | 6805 | if (VEC_length(breakpoint_p, found) > 1) |
80f8a6eb MS |
6806 | from_tty = 1; /* Always report if deleted more than one */ |
6807 | if (from_tty) | |
a3f17187 | 6808 | { |
d6e956e5 | 6809 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
6810 | printf_unfiltered (_("Deleted breakpoint ")); |
6811 | else | |
6812 | printf_unfiltered (_("Deleted breakpoints ")); | |
6813 | } | |
80f8a6eb | 6814 | breakpoints_changed (); |
d6e956e5 VP |
6815 | |
6816 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 6817 | { |
c5aa993b | 6818 | if (from_tty) |
d6e956e5 VP |
6819 | printf_unfiltered ("%d ", b->number); |
6820 | delete_breakpoint (b); | |
c906108c | 6821 | } |
80f8a6eb MS |
6822 | if (from_tty) |
6823 | putchar_unfiltered ('\n'); | |
c906108c SS |
6824 | } |
6825 | \f | |
6826 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
6827 | all breakpoints that are marked for deletion, whether hit or not. | |
6828 | This is called after any breakpoint is hit, or after errors. */ | |
6829 | ||
6830 | void | |
fba45db2 | 6831 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
6832 | { |
6833 | struct breakpoint *b, *temp; | |
6834 | ||
6835 | for (; bs; bs = bs->next) | |
20874c92 VP |
6836 | if (bs->breakpoint_at |
6837 | && bs->breakpoint_at->owner | |
6838 | && bs->breakpoint_at->owner->disposition == disp_del | |
c906108c | 6839 | && bs->stop) |
4f8d1dc6 | 6840 | delete_breakpoint (bs->breakpoint_at->owner); |
c906108c SS |
6841 | |
6842 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 6843 | { |
b5de0fa7 | 6844 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
6845 | delete_breakpoint (b); |
6846 | } | |
c906108c SS |
6847 | } |
6848 | ||
4cd9bd08 | 6849 | /* If SHOULD_INSERT is false, do not insert any breakpoint locations |
b60e7edf PA |
6850 | into the inferior, only remove already-inserted locations that no |
6851 | longer should be inserted. Functions that delete a breakpoint or | |
6852 | breakpoints should pass false, so that deleting a breakpoint | |
6853 | doesn't have the side effect of inserting the locations of other | |
6854 | breakpoints that are marked not-inserted, but should_be_inserted | |
6855 | returns true on them. | |
6856 | ||
6857 | This behaviour is useful is situations close to tear-down -- e.g., | |
6858 | after an exec, while the target still has execution, but breakpoint | |
6859 | shadows of the previous executable image should *NOT* be restored | |
6860 | to the new image; or before detaching, where the target still has | |
6861 | execution and wants to delete breakpoints from GDB's lists, and all | |
6862 | breakpoints had already been removed from the inferior. */ | |
6863 | ||
0d381245 | 6864 | static void |
b60e7edf | 6865 | update_global_location_list (int should_insert) |
0d381245 | 6866 | { |
74960c60 VP |
6867 | struct breakpoint *b; |
6868 | struct bp_location **next = &bp_location_chain; | |
6869 | struct bp_location *loc; | |
6870 | struct bp_location *loc2; | |
6871 | struct gdb_exception e; | |
6872 | VEC(bp_location_p) *old_locations = NULL; | |
6873 | int ret; | |
6874 | int ix; | |
6875 | ||
6876 | /* Store old locations for future reference. */ | |
6877 | for (loc = bp_location_chain; loc; loc = loc->global_next) | |
6878 | VEC_safe_push (bp_location_p, old_locations, loc); | |
0d381245 | 6879 | |
74960c60 VP |
6880 | bp_location_chain = NULL; |
6881 | ALL_BREAKPOINTS (b) | |
0d381245 | 6882 | { |
74960c60 | 6883 | for (loc = b->loc; loc; loc = loc->next) |
0d381245 | 6884 | { |
74960c60 VP |
6885 | *next = loc; |
6886 | next = &(loc->global_next); | |
6887 | *next = NULL; | |
0d381245 | 6888 | } |
74960c60 VP |
6889 | } |
6890 | ||
6891 | /* Identify bp_location instances that are no longer present in the new | |
6892 | list, and therefore should be freed. Note that it's not necessary that | |
6893 | those locations should be removed from inferior -- if there's another | |
6894 | location at the same address (previously marked as duplicate), | |
6895 | we don't need to remove/insert the location. */ | |
6896 | for (ix = 0; VEC_iterate(bp_location_p, old_locations, ix, loc); ++ix) | |
6897 | { | |
6898 | /* Tells if 'loc' is found amoung the new locations. If not, we | |
6899 | have to free it. */ | |
6900 | int found_object = 0; | |
20874c92 VP |
6901 | /* Tells if the location should remain inserted in the target. */ |
6902 | int keep_in_target = 0; | |
6903 | int removed = 0; | |
74960c60 VP |
6904 | for (loc2 = bp_location_chain; loc2; loc2 = loc2->global_next) |
6905 | if (loc2 == loc) | |
6906 | { | |
6907 | found_object = 1; | |
6908 | break; | |
6909 | } | |
6910 | ||
6911 | /* If this location is no longer present, and inserted, look if there's | |
6912 | maybe a new location at the same address. If so, mark that one | |
6913 | inserted, and don't remove this one. This is needed so that we | |
6914 | don't have a time window where a breakpoint at certain location is not | |
6915 | inserted. */ | |
6916 | ||
6917 | if (loc->inserted) | |
0d381245 | 6918 | { |
74960c60 | 6919 | /* If the location is inserted now, we might have to remove it. */ |
74960c60 VP |
6920 | |
6921 | if (found_object && should_be_inserted (loc)) | |
6922 | { | |
6923 | /* The location is still present in the location list, and still | |
6924 | should be inserted. Don't do anything. */ | |
20874c92 | 6925 | keep_in_target = 1; |
74960c60 VP |
6926 | } |
6927 | else | |
6928 | { | |
6929 | /* The location is either no longer present, or got disabled. | |
6930 | See if there's another location at the same address, in which | |
6931 | case we don't need to remove this one from the target. */ | |
6932 | if (breakpoint_address_is_meaningful (loc->owner)) | |
6933 | for (loc2 = bp_location_chain; loc2; loc2 = loc2->global_next) | |
6934 | { | |
6935 | /* For the sake of should_insert_location. The | |
6936 | call to check_duplicates will fix up this later. */ | |
6937 | loc2->duplicate = 0; | |
6938 | if (should_be_inserted (loc2) | |
6939 | && loc2 != loc && loc2->address == loc->address) | |
6940 | { | |
6941 | loc2->inserted = 1; | |
6942 | loc2->target_info = loc->target_info; | |
20874c92 | 6943 | keep_in_target = 1; |
74960c60 VP |
6944 | break; |
6945 | } | |
6946 | } | |
6947 | } | |
6948 | ||
20874c92 VP |
6949 | if (!keep_in_target) |
6950 | { | |
6951 | if (remove_breakpoint (loc, mark_uninserted)) | |
6952 | { | |
6953 | /* This is just about all we can do. We could keep this | |
6954 | location on the global list, and try to remove it next | |
6955 | time, but there's no particular reason why we will | |
6956 | succeed next time. | |
6957 | ||
6958 | Note that at this point, loc->owner is still valid, | |
6959 | as delete_breakpoint frees the breakpoint only | |
6960 | after calling us. */ | |
6961 | printf_filtered (_("warning: Error removing breakpoint %d\n"), | |
6962 | loc->owner->number); | |
6963 | } | |
6964 | removed = 1; | |
6965 | } | |
0d381245 | 6966 | } |
74960c60 VP |
6967 | |
6968 | if (!found_object) | |
1c5cfe86 PA |
6969 | { |
6970 | if (removed && non_stop) | |
20874c92 VP |
6971 | { |
6972 | /* This location was removed from the targets. In non-stop mode, | |
6973 | a race condition is possible where we've removed a breakpoint, | |
6974 | but stop events for that breakpoint are already queued and will | |
6975 | arrive later. To suppress spurious SIGTRAPs reported to user, | |
6976 | we keep this breakpoint location for a bit, and will retire it | |
6977 | after we see 3 * thread_count events. | |
1c5cfe86 | 6978 | The theory here is that reporting of events should, |
20874c92 VP |
6979 | "on the average", be fair, so after that many event we'll see |
6980 | events from all threads that have anything of interest, and no | |
1c5cfe86 | 6981 | longer need to keep this breakpoint. This is just a |
20874c92 | 6982 | heuristic, but if it's wrong, we'll report unexpected SIGTRAP, |
1c5cfe86 | 6983 | which is usability issue, but not a correctness problem. */ |
20874c92 VP |
6984 | loc->events_till_retirement = 3 * (thread_count () + 1); |
6985 | loc->owner = NULL; | |
20874c92 | 6986 | |
1c5cfe86 PA |
6987 | VEC_safe_push (bp_location_p, moribund_locations, loc); |
6988 | } | |
6989 | else | |
6990 | free_bp_location (loc); | |
20874c92 | 6991 | } |
74960c60 | 6992 | } |
1c5cfe86 | 6993 | |
74960c60 VP |
6994 | ALL_BREAKPOINTS (b) |
6995 | { | |
6996 | check_duplicates (b); | |
0d381245 | 6997 | } |
74960c60 | 6998 | |
50c71eaf PA |
6999 | if (breakpoints_always_inserted_mode () && should_insert |
7000 | && (target_has_execution | |
7001 | || (gdbarch_has_global_solist (target_gdbarch) | |
7002 | && target_supports_multi_process ()))) | |
74960c60 VP |
7003 | insert_breakpoint_locations (); |
7004 | } | |
7005 | ||
20874c92 VP |
7006 | void |
7007 | breakpoint_retire_moribund (void) | |
7008 | { | |
7009 | struct bp_location *loc; | |
7010 | int ix; | |
7011 | ||
7012 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
7013 | if (--(loc->events_till_retirement) == 0) | |
7014 | { | |
7015 | free_bp_location (loc); | |
7016 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
7017 | --ix; | |
7018 | } | |
7019 | } | |
7020 | ||
74960c60 | 7021 | static void |
b60e7edf | 7022 | update_global_location_list_nothrow (int inserting) |
74960c60 VP |
7023 | { |
7024 | struct gdb_exception e; | |
7025 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
b60e7edf | 7026 | update_global_location_list (inserting); |
0d381245 VP |
7027 | } |
7028 | ||
a474d7c2 PA |
7029 | /* Clear BPT from a BPS. */ |
7030 | static void | |
7031 | bpstat_remove_breakpoint (bpstat bps, struct breakpoint *bpt) | |
7032 | { | |
7033 | bpstat bs; | |
7034 | for (bs = bps; bs; bs = bs->next) | |
7035 | if (bs->breakpoint_at && bs->breakpoint_at->owner == bpt) | |
7036 | { | |
7037 | bs->breakpoint_at = NULL; | |
7038 | bs->old_val = NULL; | |
7039 | /* bs->commands will be freed later. */ | |
7040 | } | |
7041 | } | |
7042 | ||
7043 | /* Callback for iterate_over_threads. */ | |
7044 | static int | |
7045 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
7046 | { | |
7047 | struct breakpoint *bpt = data; | |
7048 | bpstat_remove_breakpoint (th->stop_bpstat, bpt); | |
7049 | return 0; | |
7050 | } | |
7051 | ||
53a5351d JM |
7052 | /* Delete a breakpoint and clean up all traces of it in the data |
7053 | structures. */ | |
c906108c SS |
7054 | |
7055 | void | |
fba45db2 | 7056 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 7057 | { |
52f0bd74 | 7058 | struct breakpoint *b; |
74960c60 | 7059 | struct bp_location *loc, *next; |
c906108c | 7060 | |
8a3fe4f8 | 7061 | gdb_assert (bpt != NULL); |
c906108c SS |
7062 | |
7063 | /* Has this bp already been deleted? This can happen because multiple | |
7064 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
7065 | ||
7066 | One example of this happening is a watchpoint's scope bp. When the | |
7067 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
7068 | delete it. We also delete its scope bp. But the scope bp is marked | |
7069 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
7070 | checked for auto-deleting bp's, which are deleted. | |
7071 | ||
7072 | A real solution to this problem might involve reference counts in bp's, | |
7073 | and/or giving them pointers back to their referencing bpstat's, and | |
7074 | teaching delete_breakpoint to only free a bp's storage when no more | |
1272ad14 | 7075 | references were extent. A cheaper bandaid was chosen. */ |
c906108c SS |
7076 | if (bpt->type == bp_none) |
7077 | return; | |
7078 | ||
383f836e | 7079 | observer_notify_breakpoint_deleted (bpt->number); |
c906108c | 7080 | |
c906108c SS |
7081 | if (breakpoint_chain == bpt) |
7082 | breakpoint_chain = bpt->next; | |
7083 | ||
c906108c SS |
7084 | ALL_BREAKPOINTS (b) |
7085 | if (b->next == bpt) | |
c5aa993b JM |
7086 | { |
7087 | b->next = bpt->next; | |
7088 | break; | |
7089 | } | |
c906108c | 7090 | |
c906108c | 7091 | free_command_lines (&bpt->commands); |
c906108c | 7092 | if (bpt->cond_string != NULL) |
b8c9b27d | 7093 | xfree (bpt->cond_string); |
c906108c | 7094 | if (bpt->addr_string != NULL) |
b8c9b27d | 7095 | xfree (bpt->addr_string); |
c906108c | 7096 | if (bpt->exp != NULL) |
b8c9b27d | 7097 | xfree (bpt->exp); |
c906108c | 7098 | if (bpt->exp_string != NULL) |
b8c9b27d | 7099 | xfree (bpt->exp_string); |
c906108c SS |
7100 | if (bpt->val != NULL) |
7101 | value_free (bpt->val); | |
7102 | if (bpt->source_file != NULL) | |
b8c9b27d | 7103 | xfree (bpt->source_file); |
c906108c | 7104 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 7105 | xfree (bpt->exec_pathname); |
c906108c SS |
7106 | |
7107 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
7108 | /* FIXME, how can we find all bpstat's? | |
198757a8 VP |
7109 | We just check stop_bpstat for now. Note that we cannot just |
7110 | remove bpstats pointing at bpt from the stop_bpstat list | |
7111 | entirely, as breakpoint commands are associated with the bpstat; | |
7112 | if we remove it here, then the later call to | |
7113 | bpstat_do_actions (&stop_bpstat); | |
7114 | in event-top.c won't do anything, and temporary breakpoints | |
7115 | with commands won't work. */ | |
a474d7c2 | 7116 | |
a474d7c2 | 7117 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); |
74960c60 VP |
7118 | |
7119 | /* Now that breakpoint is removed from breakpoint | |
7120 | list, update the global location list. This | |
7121 | will remove locations that used to belong to | |
7122 | this breakpoint. Do this before freeing | |
7123 | the breakpoint itself, since remove_breakpoint | |
7124 | looks at location's owner. It might be better | |
7125 | design to have location completely self-contained, | |
7126 | but it's not the case now. */ | |
b60e7edf | 7127 | update_global_location_list (0); |
74960c60 VP |
7128 | |
7129 | ||
c906108c SS |
7130 | /* On the chance that someone will soon try again to delete this same |
7131 | bp, we mark it as deleted before freeing its storage. */ | |
7132 | bpt->type = bp_none; | |
7133 | ||
b8c9b27d | 7134 | xfree (bpt); |
c906108c SS |
7135 | } |
7136 | ||
4d6140d9 AC |
7137 | static void |
7138 | do_delete_breakpoint_cleanup (void *b) | |
7139 | { | |
7140 | delete_breakpoint (b); | |
7141 | } | |
7142 | ||
7143 | struct cleanup * | |
7144 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
7145 | { | |
7146 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
7147 | } | |
7148 | ||
c906108c | 7149 | void |
fba45db2 | 7150 | delete_command (char *arg, int from_tty) |
c906108c SS |
7151 | { |
7152 | struct breakpoint *b, *temp; | |
7153 | ||
ea9365bb TT |
7154 | dont_repeat (); |
7155 | ||
c906108c SS |
7156 | if (arg == 0) |
7157 | { | |
7158 | int breaks_to_delete = 0; | |
7159 | ||
7160 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
7161 | Do not delete internal or call-dummy breakpoints, these |
7162 | have to be deleted with an explicit breakpoint number argument. */ | |
7163 | ALL_BREAKPOINTS (b) | |
7164 | { | |
7165 | if (b->type != bp_call_dummy && | |
7166 | b->type != bp_shlib_event && | |
c4093a6a | 7167 | b->type != bp_thread_event && |
1900040c | 7168 | b->type != bp_overlay_event && |
c5aa993b | 7169 | b->number >= 0) |
973d738b DJ |
7170 | { |
7171 | breaks_to_delete = 1; | |
7172 | break; | |
7173 | } | |
c5aa993b | 7174 | } |
c906108c SS |
7175 | |
7176 | /* Ask user only if there are some breakpoints to delete. */ | |
7177 | if (!from_tty | |
e2e0b3e5 | 7178 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 7179 | { |
c5aa993b JM |
7180 | ALL_BREAKPOINTS_SAFE (b, temp) |
7181 | { | |
7182 | if (b->type != bp_call_dummy && | |
7183 | b->type != bp_shlib_event && | |
c4093a6a | 7184 | b->type != bp_thread_event && |
1900040c | 7185 | b->type != bp_overlay_event && |
c5aa993b JM |
7186 | b->number >= 0) |
7187 | delete_breakpoint (b); | |
7188 | } | |
c906108c SS |
7189 | } |
7190 | } | |
7191 | else | |
7192 | map_breakpoint_numbers (arg, delete_breakpoint); | |
7193 | } | |
7194 | ||
0d381245 VP |
7195 | static int |
7196 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 7197 | { |
0d381245 VP |
7198 | for (; loc; loc = loc->next) |
7199 | if (!loc->shlib_disabled) | |
7200 | return 0; | |
7201 | return 1; | |
fe3f5fa8 VP |
7202 | } |
7203 | ||
776592bf DE |
7204 | /* Subroutine of update_breakpoint_locations to simplify it. |
7205 | Return non-zero if multiple fns in list LOC have the same name. | |
7206 | Null names are ignored. */ | |
7207 | ||
7208 | static int | |
7209 | ambiguous_names_p (struct bp_location *loc) | |
7210 | { | |
7211 | struct bp_location *l; | |
7212 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
7213 | (int (*) (const void *, const void *)) streq, | |
7214 | NULL, xcalloc, xfree); | |
7215 | ||
7216 | for (l = loc; l != NULL; l = l->next) | |
7217 | { | |
7218 | const char **slot; | |
7219 | const char *name = l->function_name; | |
7220 | ||
7221 | /* Allow for some names to be NULL, ignore them. */ | |
7222 | if (name == NULL) | |
7223 | continue; | |
7224 | ||
7225 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
7226 | INSERT); | |
7227 | /* NOTE: We can assume slot != NULL here because xcalloc never returns | |
7228 | NULL. */ | |
7229 | if (*slot != NULL) | |
7230 | { | |
7231 | htab_delete (htab); | |
7232 | return 1; | |
7233 | } | |
7234 | *slot = name; | |
7235 | } | |
7236 | ||
7237 | htab_delete (htab); | |
7238 | return 0; | |
7239 | } | |
7240 | ||
fe3f5fa8 | 7241 | static void |
0d381245 VP |
7242 | update_breakpoint_locations (struct breakpoint *b, |
7243 | struct symtabs_and_lines sals) | |
fe3f5fa8 VP |
7244 | { |
7245 | int i; | |
7246 | char *s; | |
0d381245 VP |
7247 | struct bp_location *existing_locations = b->loc; |
7248 | ||
7249 | /* If there's no new locations, and all existing locations | |
7250 | are pending, don't do anything. This optimizes | |
7251 | the common case where all locations are in the same | |
7252 | shared library, that was unloaded. We'd like to | |
7253 | retain the location, so that when the library | |
7254 | is loaded again, we don't loose the enabled/disabled | |
7255 | status of the individual locations. */ | |
7256 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) | |
fe3f5fa8 VP |
7257 | return; |
7258 | ||
fe3f5fa8 VP |
7259 | b->loc = NULL; |
7260 | ||
0d381245 | 7261 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 7262 | { |
0d381245 | 7263 | struct bp_location *new_loc = |
39d61571 | 7264 | add_location_to_breakpoint (b, &(sals.sals[i])); |
fe3f5fa8 | 7265 | |
0d381245 VP |
7266 | /* Reparse conditions, they might contain references to the |
7267 | old symtab. */ | |
7268 | if (b->cond_string != NULL) | |
7269 | { | |
7270 | struct gdb_exception e; | |
fe3f5fa8 | 7271 | |
0d381245 VP |
7272 | s = b->cond_string; |
7273 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
7274 | { | |
7275 | new_loc->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), | |
7276 | 0); | |
7277 | } | |
7278 | if (e.reason < 0) | |
7279 | { | |
7280 | warning (_("failed to reevaluate condition for breakpoint %d: %s"), | |
7281 | b->number, e.message); | |
7282 | new_loc->enabled = 0; | |
7283 | } | |
7284 | } | |
fe3f5fa8 | 7285 | |
0d381245 VP |
7286 | if (b->source_file != NULL) |
7287 | xfree (b->source_file); | |
7288 | if (sals.sals[i].symtab == NULL) | |
7289 | b->source_file = NULL; | |
7290 | else | |
7291 | b->source_file = | |
7292 | savestring (sals.sals[i].symtab->filename, | |
7293 | strlen (sals.sals[i].symtab->filename)); | |
fe3f5fa8 | 7294 | |
0d381245 VP |
7295 | if (b->line_number == 0) |
7296 | b->line_number = sals.sals[i].line; | |
7297 | } | |
fe3f5fa8 | 7298 | |
514f746b AR |
7299 | /* Update locations of permanent breakpoints. */ |
7300 | if (b->enable_state == bp_permanent) | |
7301 | make_breakpoint_permanent (b); | |
7302 | ||
0d381245 VP |
7303 | /* If possible, carry over 'disable' status from existing breakpoints. */ |
7304 | { | |
7305 | struct bp_location *e = existing_locations; | |
776592bf DE |
7306 | /* If there are multiple breakpoints with the same function name, |
7307 | e.g. for inline functions, comparing function names won't work. | |
7308 | Instead compare pc addresses; this is just a heuristic as things | |
7309 | may have moved, but in practice it gives the correct answer | |
7310 | often enough until a better solution is found. */ | |
7311 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
7312 | ||
0d381245 VP |
7313 | for (; e; e = e->next) |
7314 | { | |
7315 | if (!e->enabled && e->function_name) | |
7316 | { | |
7317 | struct bp_location *l = b->loc; | |
776592bf DE |
7318 | if (have_ambiguous_names) |
7319 | { | |
7320 | for (; l; l = l->next) | |
7321 | if (e->address == l->address) | |
7322 | { | |
7323 | l->enabled = 0; | |
7324 | break; | |
7325 | } | |
7326 | } | |
7327 | else | |
7328 | { | |
7329 | for (; l; l = l->next) | |
7330 | if (l->function_name | |
7331 | && strcmp (e->function_name, l->function_name) == 0) | |
7332 | { | |
7333 | l->enabled = 0; | |
7334 | break; | |
7335 | } | |
7336 | } | |
0d381245 VP |
7337 | } |
7338 | } | |
7339 | } | |
fe3f5fa8 | 7340 | |
b60e7edf | 7341 | update_global_location_list (1); |
fe3f5fa8 VP |
7342 | } |
7343 | ||
7344 | ||
c906108c SS |
7345 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
7346 | The value we return ends up being the return value from catch_errors. | |
7347 | Unused in this case. */ | |
7348 | ||
7349 | static int | |
4efb68b1 | 7350 | breakpoint_re_set_one (void *bint) |
c906108c | 7351 | { |
53a5351d JM |
7352 | /* get past catch_errs */ |
7353 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
7354 | struct value *mark; |
7355 | int i; | |
fe3f5fa8 VP |
7356 | int not_found = 0; |
7357 | int *not_found_ptr = ¬_found; | |
7358 | struct symtabs_and_lines sals = {}; | |
ed0616c6 | 7359 | struct symtabs_and_lines expanded; |
c906108c | 7360 | char *s; |
b5de0fa7 | 7361 | enum enable_state save_enable; |
fe3f5fa8 VP |
7362 | struct gdb_exception e; |
7363 | ||
c906108c SS |
7364 | |
7365 | switch (b->type) | |
7366 | { | |
7367 | case bp_none: | |
8a3fe4f8 | 7368 | warning (_("attempted to reset apparently deleted breakpoint #%d?"), |
53a5351d | 7369 | b->number); |
c906108c SS |
7370 | return 0; |
7371 | case bp_breakpoint: | |
7372 | case bp_hardware_breakpoint: | |
c906108c SS |
7373 | if (b->addr_string == NULL) |
7374 | { | |
7375 | /* Anything without a string can't be re-set. */ | |
7376 | delete_breakpoint (b); | |
7377 | return 0; | |
7378 | } | |
c906108c SS |
7379 | |
7380 | set_language (b->language); | |
7381 | input_radix = b->input_radix; | |
7382 | s = b->addr_string; | |
fe3f5fa8 | 7383 | TRY_CATCH (e, RETURN_MASK_ERROR) |
c906108c | 7384 | { |
fe3f5fa8 VP |
7385 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, |
7386 | not_found_ptr); | |
7387 | } | |
7388 | if (e.reason < 0) | |
7389 | { | |
7390 | int not_found_and_ok = 0; | |
7391 | /* For pending breakpoints, it's expected that parsing | |
7392 | will fail until the right shared library is loaded. | |
7393 | User has already told to create pending breakpoints and | |
7394 | don't need extra messages. If breakpoint is in bp_shlib_disabled | |
7395 | state, then user already saw the message about that breakpoint | |
7396 | being disabled, and don't want to see more errors. */ | |
0d381245 VP |
7397 | if (not_found |
7398 | && (b->condition_not_parsed | |
7399 | || (b->loc && b->loc->shlib_disabled) | |
7400 | || b->enable_state == bp_disabled)) | |
fe3f5fa8 VP |
7401 | not_found_and_ok = 1; |
7402 | ||
7403 | if (!not_found_and_ok) | |
c906108c | 7404 | { |
fe3f5fa8 VP |
7405 | /* We surely don't want to warn about the same breakpoint |
7406 | 10 times. One solution, implemented here, is disable | |
7407 | the breakpoint on error. Another solution would be to | |
7408 | have separate 'warning emitted' flag. Since this | |
7409 | happens only when a binary has changed, I don't know | |
7410 | which approach is better. */ | |
7411 | b->enable_state = bp_disabled; | |
7412 | throw_exception (e); | |
c906108c | 7413 | } |
fe3f5fa8 | 7414 | } |
c906108c | 7415 | |
fe3f5fa8 VP |
7416 | if (not_found) |
7417 | break; | |
7418 | ||
7419 | gdb_assert (sals.nelts == 1); | |
7420 | resolve_sal_pc (&sals.sals[0]); | |
0d381245 | 7421 | if (b->condition_not_parsed && s && s[0]) |
fe3f5fa8 VP |
7422 | { |
7423 | char *cond_string = 0; | |
7424 | int thread = -1; | |
7425 | find_condition_and_thread (s, sals.sals[0].pc, | |
7426 | &cond_string, &thread); | |
7427 | if (cond_string) | |
7428 | b->cond_string = cond_string; | |
7429 | b->thread = thread; | |
0d381245 | 7430 | b->condition_not_parsed = 0; |
fe3f5fa8 | 7431 | } |
ed0616c6 VP |
7432 | expanded = expand_line_sal_maybe (sals.sals[0]); |
7433 | update_breakpoint_locations (b, expanded); | |
0d381245 | 7434 | |
b8c9b27d | 7435 | xfree (sals.sals); |
c906108c SS |
7436 | break; |
7437 | ||
7438 | case bp_watchpoint: | |
7439 | case bp_hardware_watchpoint: | |
7440 | case bp_read_watchpoint: | |
7441 | case bp_access_watchpoint: | |
0b3de036 VP |
7442 | /* Watchpoint can be either on expression using entirely global variables, |
7443 | or it can be on local variables. | |
7444 | ||
7445 | Watchpoints of the first kind are never auto-deleted, and even persist | |
7446 | across program restarts. Since they can use variables from shared | |
7447 | libraries, we need to reparse expression as libraries are loaded | |
7448 | and unloaded. | |
7449 | ||
7450 | Watchpoints on local variables can also change meaning as result | |
7451 | of solib event. For example, if a watchpoint uses both a local and | |
7452 | a global variables in expression, it's a local watchpoint, but | |
7453 | unloading of a shared library will make the expression invalid. | |
7454 | This is not a very common use case, but we still re-evaluate | |
7455 | expression, to avoid surprises to the user. | |
7456 | ||
7457 | Note that for local watchpoints, we re-evaluate it only if | |
7458 | watchpoints frame id is still valid. If it's not, it means | |
7459 | the watchpoint is out of scope and will be deleted soon. In fact, | |
7460 | I'm not sure we'll ever be called in this case. | |
7461 | ||
7462 | If a local watchpoint's frame id is still valid, then | |
7463 | b->exp_valid_block is likewise valid, and we can safely use it. | |
7464 | ||
7465 | Don't do anything about disabled watchpoints, since they will | |
7466 | be reevaluated again when enabled. */ | |
a5606eee | 7467 | update_watchpoint (b, 1 /* reparse */); |
c906108c | 7468 | break; |
c5aa993b JM |
7469 | /* We needn't really do anything to reset these, since the mask |
7470 | that requests them is unaffected by e.g., new libraries being | |
7471 | loaded. */ | |
ce78b96d | 7472 | case bp_catchpoint: |
c906108c | 7473 | break; |
c5aa993b | 7474 | |
c906108c | 7475 | default: |
a3f17187 | 7476 | printf_filtered (_("Deleting unknown breakpoint type %d\n"), b->type); |
c906108c | 7477 | /* fall through */ |
611c83ae PA |
7478 | /* Delete overlay event breakpoints; they will be reset later by |
7479 | breakpoint_re_set. */ | |
1900040c | 7480 | case bp_overlay_event: |
c906108c SS |
7481 | delete_breakpoint (b); |
7482 | break; | |
7483 | ||
c5aa993b JM |
7484 | /* This breakpoint is special, it's set up when the inferior |
7485 | starts and we really don't want to touch it. */ | |
c906108c SS |
7486 | case bp_shlib_event: |
7487 | ||
c4093a6a JM |
7488 | /* Like bp_shlib_event, this breakpoint type is special. |
7489 | Once it is set up, we do not want to touch it. */ | |
7490 | case bp_thread_event: | |
7491 | ||
c5aa993b JM |
7492 | /* Keep temporary breakpoints, which can be encountered when we step |
7493 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7494 | Otherwise these should have been blown away via the cleanup chain | |
7495 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7496 | case bp_until: |
7497 | case bp_finish: | |
7498 | case bp_watchpoint_scope: | |
7499 | case bp_call_dummy: | |
7500 | case bp_step_resume: | |
611c83ae PA |
7501 | case bp_longjmp: |
7502 | case bp_longjmp_resume: | |
c906108c SS |
7503 | break; |
7504 | } | |
7505 | ||
7506 | return 0; | |
7507 | } | |
7508 | ||
7509 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
7510 | void | |
fba45db2 | 7511 | breakpoint_re_set (void) |
c906108c SS |
7512 | { |
7513 | struct breakpoint *b, *temp; | |
7514 | enum language save_language; | |
7515 | int save_input_radix; | |
c5aa993b | 7516 | |
c906108c SS |
7517 | save_language = current_language->la_language; |
7518 | save_input_radix = input_radix; | |
7519 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7520 | { |
53a5351d | 7521 | /* Format possible error msg */ |
fe3f5fa8 | 7522 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
7523 | b->number); |
7524 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 7525 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 7526 | do_cleanups (cleanups); |
c5aa993b | 7527 | } |
c906108c SS |
7528 | set_language (save_language); |
7529 | input_radix = save_input_radix; | |
1900040c MS |
7530 | |
7531 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
7532 | } |
7533 | \f | |
c906108c SS |
7534 | /* Reset the thread number of this breakpoint: |
7535 | ||
7536 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 7537 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 7538 | void |
fba45db2 | 7539 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
7540 | { |
7541 | if (b->thread != -1) | |
7542 | { | |
39f77062 KB |
7543 | if (in_thread_list (inferior_ptid)) |
7544 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
7545 | } |
7546 | } | |
7547 | ||
03ac34d5 MS |
7548 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7549 | If from_tty is nonzero, it prints a message to that effect, | |
7550 | which ends with a period (no newline). */ | |
7551 | ||
c906108c | 7552 | void |
fba45db2 | 7553 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 7554 | { |
52f0bd74 | 7555 | struct breakpoint *b; |
c906108c SS |
7556 | |
7557 | if (count < 0) | |
7558 | count = 0; | |
7559 | ||
7560 | ALL_BREAKPOINTS (b) | |
7561 | if (b->number == bptnum) | |
c5aa993b JM |
7562 | { |
7563 | b->ignore_count = count; | |
221ea385 KS |
7564 | if (from_tty) |
7565 | { | |
7566 | if (count == 0) | |
a3f17187 | 7567 | printf_filtered (_("Will stop next time breakpoint %d is reached."), |
221ea385 KS |
7568 | bptnum); |
7569 | else if (count == 1) | |
a3f17187 | 7570 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
7571 | bptnum); |
7572 | else | |
a3f17187 | 7573 | printf_filtered (_("Will ignore next %d crossings of breakpoint %d."), |
221ea385 KS |
7574 | count, bptnum); |
7575 | } | |
c5aa993b | 7576 | breakpoints_changed (); |
383f836e | 7577 | observer_notify_breakpoint_modified (b->number); |
c5aa993b JM |
7578 | return; |
7579 | } | |
c906108c | 7580 | |
8a3fe4f8 | 7581 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
7582 | } |
7583 | ||
b2175913 MS |
7584 | void |
7585 | make_breakpoint_silent (struct breakpoint *b) | |
7586 | { | |
7587 | /* Silence the breakpoint. */ | |
7588 | b->silent = 1; | |
7589 | } | |
7590 | ||
c906108c SS |
7591 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
7592 | ||
7593 | static void | |
fba45db2 | 7594 | ignore_command (char *args, int from_tty) |
c906108c SS |
7595 | { |
7596 | char *p = args; | |
52f0bd74 | 7597 | int num; |
c906108c SS |
7598 | |
7599 | if (p == 0) | |
e2e0b3e5 | 7600 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 7601 | |
c906108c | 7602 | num = get_number (&p); |
5c44784c | 7603 | if (num == 0) |
8a3fe4f8 | 7604 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 7605 | if (*p == 0) |
8a3fe4f8 | 7606 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
7607 | |
7608 | set_ignore_count (num, | |
7609 | longest_to_int (value_as_long (parse_and_eval (p))), | |
7610 | from_tty); | |
221ea385 KS |
7611 | if (from_tty) |
7612 | printf_filtered ("\n"); | |
c906108c SS |
7613 | } |
7614 | \f | |
7615 | /* Call FUNCTION on each of the breakpoints | |
7616 | whose numbers are given in ARGS. */ | |
7617 | ||
7618 | static void | |
831662b3 | 7619 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) |
c906108c | 7620 | { |
52f0bd74 | 7621 | char *p = args; |
c906108c | 7622 | char *p1; |
52f0bd74 AC |
7623 | int num; |
7624 | struct breakpoint *b, *tmp; | |
11cf8741 | 7625 | int match; |
c906108c SS |
7626 | |
7627 | if (p == 0) | |
e2e0b3e5 | 7628 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c SS |
7629 | |
7630 | while (*p) | |
7631 | { | |
11cf8741 | 7632 | match = 0; |
c906108c | 7633 | p1 = p; |
c5aa993b | 7634 | |
5c44784c JM |
7635 | num = get_number_or_range (&p1); |
7636 | if (num == 0) | |
c5aa993b | 7637 | { |
8a3fe4f8 | 7638 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
7639 | } |
7640 | else | |
7641 | { | |
7642 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
7643 | if (b->number == num) | |
7644 | { | |
7645 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 7646 | match = 1; |
5c44784c JM |
7647 | function (b); |
7648 | if (related_breakpoint) | |
7649 | function (related_breakpoint); | |
11cf8741 | 7650 | break; |
5c44784c | 7651 | } |
11cf8741 | 7652 | if (match == 0) |
a3f17187 | 7653 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 7654 | } |
c906108c SS |
7655 | p = p1; |
7656 | } | |
7657 | } | |
7658 | ||
0d381245 VP |
7659 | static struct bp_location * |
7660 | find_location_by_number (char *number) | |
7661 | { | |
7662 | char *dot = strchr (number, '.'); | |
7663 | char *p1; | |
7664 | int bp_num; | |
7665 | int loc_num; | |
7666 | struct breakpoint *b; | |
7667 | struct bp_location *loc; | |
7668 | ||
7669 | *dot = '\0'; | |
7670 | ||
7671 | p1 = number; | |
7672 | bp_num = get_number_or_range (&p1); | |
7673 | if (bp_num == 0) | |
7674 | error (_("Bad breakpoint number '%s'"), number); | |
7675 | ||
7676 | ALL_BREAKPOINTS (b) | |
7677 | if (b->number == bp_num) | |
7678 | { | |
7679 | break; | |
7680 | } | |
7681 | ||
7682 | if (!b || b->number != bp_num) | |
7683 | error (_("Bad breakpoint number '%s'"), number); | |
7684 | ||
7685 | p1 = dot+1; | |
7686 | loc_num = get_number_or_range (&p1); | |
7687 | if (loc_num == 0) | |
7688 | error (_("Bad breakpoint location number '%s'"), number); | |
7689 | ||
7690 | --loc_num; | |
7691 | loc = b->loc; | |
7692 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
7693 | ; | |
7694 | if (!loc) | |
7695 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
7696 | ||
7697 | return loc; | |
7698 | } | |
7699 | ||
7700 | ||
1900040c MS |
7701 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7702 | If from_tty is nonzero, it prints a message to that effect, | |
7703 | which ends with a period (no newline). */ | |
7704 | ||
c906108c | 7705 | void |
fba45db2 | 7706 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7707 | { |
7708 | /* Never disable a watchpoint scope breakpoint; we want to | |
7709 | hit them when we leave scope so we can delete both the | |
7710 | watchpoint and its scope breakpoint at that time. */ | |
7711 | if (bpt->type == bp_watchpoint_scope) | |
7712 | return; | |
7713 | ||
c2c6d25f | 7714 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 7715 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
7716 | return; |
7717 | ||
b5de0fa7 | 7718 | bpt->enable_state = bp_disabled; |
c906108c | 7719 | |
b60e7edf | 7720 | update_global_location_list (0); |
c906108c | 7721 | |
383f836e | 7722 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
7723 | } |
7724 | ||
c906108c | 7725 | static void |
fba45db2 | 7726 | disable_command (char *args, int from_tty) |
c906108c | 7727 | { |
52f0bd74 | 7728 | struct breakpoint *bpt; |
c906108c SS |
7729 | if (args == 0) |
7730 | ALL_BREAKPOINTS (bpt) | |
7731 | switch (bpt->type) | |
c5aa993b JM |
7732 | { |
7733 | case bp_none: | |
8a3fe4f8 | 7734 | warning (_("attempted to disable apparently deleted breakpoint #%d?"), |
53a5351d | 7735 | bpt->number); |
c5aa993b JM |
7736 | continue; |
7737 | case bp_breakpoint: | |
ce78b96d | 7738 | case bp_catchpoint: |
c5aa993b JM |
7739 | case bp_hardware_breakpoint: |
7740 | case bp_watchpoint: | |
7741 | case bp_hardware_watchpoint: | |
7742 | case bp_read_watchpoint: | |
7743 | case bp_access_watchpoint: | |
7744 | disable_breakpoint (bpt); | |
7745 | default: | |
7746 | continue; | |
7747 | } | |
0d381245 VP |
7748 | else if (strchr (args, '.')) |
7749 | { | |
7750 | struct bp_location *loc = find_location_by_number (args); | |
7751 | if (loc) | |
7752 | loc->enabled = 0; | |
b60e7edf | 7753 | update_global_location_list (0); |
0d381245 | 7754 | } |
c906108c SS |
7755 | else |
7756 | map_breakpoint_numbers (args, disable_breakpoint); | |
7757 | } | |
7758 | ||
7759 | static void | |
fba45db2 | 7760 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 7761 | { |
c906108c SS |
7762 | int target_resources_ok, other_type_used; |
7763 | struct value *mark; | |
7764 | ||
7765 | if (bpt->type == bp_hardware_breakpoint) | |
7766 | { | |
7767 | int i; | |
c5aa993b | 7768 | i = hw_breakpoint_used_count (); |
53a5351d JM |
7769 | target_resources_ok = |
7770 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
7771 | i + 1, 0); | |
c906108c | 7772 | if (target_resources_ok == 0) |
8a3fe4f8 | 7773 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 7774 | else if (target_resources_ok < 0) |
8a3fe4f8 | 7775 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
7776 | } |
7777 | ||
fe3f5fa8 VP |
7778 | if (bpt->type == bp_watchpoint || |
7779 | bpt->type == bp_hardware_watchpoint || | |
7780 | bpt->type == bp_read_watchpoint || | |
7781 | bpt->type == bp_access_watchpoint) | |
c906108c | 7782 | { |
dde02812 ES |
7783 | struct gdb_exception e; |
7784 | ||
7785 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 7786 | { |
dde02812 | 7787 | update_watchpoint (bpt, 1 /* reparse */); |
c906108c | 7788 | } |
dde02812 | 7789 | if (e.reason < 0) |
c5aa993b | 7790 | { |
dde02812 ES |
7791 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
7792 | bpt->number); | |
7793 | return; | |
c5aa993b | 7794 | } |
c906108c | 7795 | } |
0101ce28 | 7796 | |
b4c291bb KH |
7797 | if (bpt->enable_state != bp_permanent) |
7798 | bpt->enable_state = bp_enabled; | |
7799 | bpt->disposition = disposition; | |
b60e7edf | 7800 | update_global_location_list (1); |
b4c291bb KH |
7801 | breakpoints_changed (); |
7802 | ||
383f836e | 7803 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
7804 | } |
7805 | ||
fe3f5fa8 | 7806 | |
c906108c | 7807 | void |
fba45db2 | 7808 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7809 | { |
7810 | do_enable_breakpoint (bpt, bpt->disposition); | |
7811 | } | |
7812 | ||
7813 | /* The enable command enables the specified breakpoints (or all defined | |
7814 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 7815 | in stopping the inferior. */ |
c906108c | 7816 | |
c906108c | 7817 | static void |
fba45db2 | 7818 | enable_command (char *args, int from_tty) |
c906108c | 7819 | { |
52f0bd74 | 7820 | struct breakpoint *bpt; |
c906108c SS |
7821 | if (args == 0) |
7822 | ALL_BREAKPOINTS (bpt) | |
7823 | switch (bpt->type) | |
c5aa993b JM |
7824 | { |
7825 | case bp_none: | |
8a3fe4f8 | 7826 | warning (_("attempted to enable apparently deleted breakpoint #%d?"), |
53a5351d | 7827 | bpt->number); |
c5aa993b JM |
7828 | continue; |
7829 | case bp_breakpoint: | |
ce78b96d | 7830 | case bp_catchpoint: |
c5aa993b JM |
7831 | case bp_hardware_breakpoint: |
7832 | case bp_watchpoint: | |
7833 | case bp_hardware_watchpoint: | |
7834 | case bp_read_watchpoint: | |
7835 | case bp_access_watchpoint: | |
7836 | enable_breakpoint (bpt); | |
7837 | default: | |
7838 | continue; | |
7839 | } | |
0d381245 VP |
7840 | else if (strchr (args, '.')) |
7841 | { | |
7842 | struct bp_location *loc = find_location_by_number (args); | |
7843 | if (loc) | |
7844 | loc->enabled = 1; | |
b60e7edf | 7845 | update_global_location_list (1); |
0d381245 | 7846 | } |
c906108c SS |
7847 | else |
7848 | map_breakpoint_numbers (args, enable_breakpoint); | |
7849 | } | |
7850 | ||
7851 | static void | |
fba45db2 | 7852 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c | 7853 | { |
b5de0fa7 | 7854 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
7855 | } |
7856 | ||
c906108c | 7857 | static void |
fba45db2 | 7858 | enable_once_command (char *args, int from_tty) |
c906108c SS |
7859 | { |
7860 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
7861 | } | |
7862 | ||
7863 | static void | |
fba45db2 | 7864 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c | 7865 | { |
b5de0fa7 | 7866 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
7867 | } |
7868 | ||
c906108c | 7869 | static void |
fba45db2 | 7870 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
7871 | { |
7872 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
7873 | } | |
7874 | \f | |
fa8d40ab JJ |
7875 | static void |
7876 | set_breakpoint_cmd (char *args, int from_tty) | |
7877 | { | |
7878 | } | |
7879 | ||
7880 | static void | |
7881 | show_breakpoint_cmd (char *args, int from_tty) | |
7882 | { | |
7883 | } | |
7884 | ||
c906108c SS |
7885 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
7886 | ||
7887 | struct symtabs_and_lines | |
fba45db2 | 7888 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
7889 | { |
7890 | struct symtabs_and_lines sals; | |
7891 | if (string == 0) | |
8a3fe4f8 | 7892 | error (_("Empty line specification.")); |
c906108c SS |
7893 | if (default_breakpoint_valid) |
7894 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
7895 | default_breakpoint_symtab, |
7896 | default_breakpoint_line, | |
68219205 | 7897 | (char ***) NULL, NULL); |
c906108c SS |
7898 | else |
7899 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 7900 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c | 7901 | if (*string) |
8a3fe4f8 | 7902 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
7903 | return sals; |
7904 | } | |
8181d85f DJ |
7905 | |
7906 | /* Create and insert a raw software breakpoint at PC. Return an | |
7907 | identifier, which should be used to remove the breakpoint later. | |
7908 | In general, places which call this should be using something on the | |
7909 | breakpoint chain instead; this function should be eliminated | |
7910 | someday. */ | |
7911 | ||
7912 | void * | |
7913 | deprecated_insert_raw_breakpoint (CORE_ADDR pc) | |
7914 | { | |
7915 | struct bp_target_info *bp_tgt; | |
7916 | ||
7917 | bp_tgt = xmalloc (sizeof (struct bp_target_info)); | |
7918 | memset (bp_tgt, 0, sizeof (struct bp_target_info)); | |
7919 | ||
7920 | bp_tgt->placed_address = pc; | |
7921 | if (target_insert_breakpoint (bp_tgt) != 0) | |
7922 | { | |
7923 | /* Could not insert the breakpoint. */ | |
7924 | xfree (bp_tgt); | |
7925 | return NULL; | |
7926 | } | |
7927 | ||
7928 | return bp_tgt; | |
7929 | } | |
7930 | ||
7931 | /* Remove a breakpoint BP inserted by deprecated_insert_raw_breakpoint. */ | |
7932 | ||
7933 | int | |
7934 | deprecated_remove_raw_breakpoint (void *bp) | |
7935 | { | |
7936 | struct bp_target_info *bp_tgt = bp; | |
7937 | int ret; | |
7938 | ||
7939 | ret = target_remove_breakpoint (bp_tgt); | |
7940 | xfree (bp_tgt); | |
7941 | ||
7942 | return ret; | |
7943 | } | |
7944 | ||
7945 | /* One (or perhaps two) breakpoints used for software single stepping. */ | |
7946 | ||
7947 | static void *single_step_breakpoints[2]; | |
7948 | ||
7949 | /* Create and insert a breakpoint for software single step. */ | |
7950 | ||
7951 | void | |
7952 | insert_single_step_breakpoint (CORE_ADDR next_pc) | |
7953 | { | |
7954 | void **bpt_p; | |
7955 | ||
7956 | if (single_step_breakpoints[0] == NULL) | |
7957 | bpt_p = &single_step_breakpoints[0]; | |
7958 | else | |
7959 | { | |
7960 | gdb_assert (single_step_breakpoints[1] == NULL); | |
7961 | bpt_p = &single_step_breakpoints[1]; | |
7962 | } | |
7963 | ||
7964 | /* NOTE drow/2006-04-11: A future improvement to this function would be | |
7965 | to only create the breakpoints once, and actually put them on the | |
7966 | breakpoint chain. That would let us use set_raw_breakpoint. We could | |
7967 | adjust the addresses each time they were needed. Doing this requires | |
7968 | corresponding changes elsewhere where single step breakpoints are | |
7969 | handled, however. So, for now, we use this. */ | |
7970 | ||
7971 | *bpt_p = deprecated_insert_raw_breakpoint (next_pc); | |
7972 | if (*bpt_p == NULL) | |
1893a4c0 | 7973 | error (_("Could not insert single-step breakpoint at 0x%s"), |
8181d85f DJ |
7974 | paddr_nz (next_pc)); |
7975 | } | |
7976 | ||
7977 | /* Remove and delete any breakpoints used for software single step. */ | |
7978 | ||
7979 | void | |
7980 | remove_single_step_breakpoints (void) | |
7981 | { | |
7982 | gdb_assert (single_step_breakpoints[0] != NULL); | |
7983 | ||
7984 | /* See insert_single_step_breakpoint for more about this deprecated | |
7985 | call. */ | |
7986 | deprecated_remove_raw_breakpoint (single_step_breakpoints[0]); | |
7987 | single_step_breakpoints[0] = NULL; | |
7988 | ||
7989 | if (single_step_breakpoints[1] != NULL) | |
7990 | { | |
7991 | deprecated_remove_raw_breakpoint (single_step_breakpoints[1]); | |
7992 | single_step_breakpoints[1] = NULL; | |
7993 | } | |
7994 | } | |
7995 | ||
1aafd4da UW |
7996 | /* Check whether a software single-step breakpoint is inserted at PC. */ |
7997 | ||
7998 | static int | |
7999 | single_step_breakpoint_inserted_here_p (CORE_ADDR pc) | |
8000 | { | |
8001 | int i; | |
8002 | ||
8003 | for (i = 0; i < 2; i++) | |
8004 | { | |
8005 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
8006 | if (bp_tgt && bp_tgt->placed_address == pc) | |
8007 | return 1; | |
8008 | } | |
8009 | ||
8010 | return 0; | |
8011 | } | |
8012 | ||
c906108c | 8013 | \f |
31e2b00f AS |
8014 | /* This help string is used for the break, hbreak, tbreak and thbreak commands. |
8015 | It is defined as a macro to prevent duplication. | |
8016 | COMMAND should be a string constant containing the name of the command. */ | |
8017 | #define BREAK_ARGS_HELP(command) \ | |
8018 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
8019 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
8020 | If a line number is specified, break at start of code for that line.\n\ | |
8021 | If a function is specified, break at start of code for that function.\n\ | |
8022 | If an address is specified, break at that exact address.\n\ | |
8023 | With no LOCATION, uses current execution address of selected stack frame.\n\ | |
8024 | This is useful for breaking on return to a stack frame.\n\ | |
8025 | \n\ | |
8026 | THREADNUM is the number from \"info threads\".\n\ | |
8027 | CONDITION is a boolean expression.\n\ | |
8028 | \n\ | |
8029 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
8030 | \n\ | |
8031 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
8032 | ||
44feb3ce TT |
8033 | /* List of subcommands for "catch". */ |
8034 | static struct cmd_list_element *catch_cmdlist; | |
8035 | ||
8036 | /* List of subcommands for "tcatch". */ | |
8037 | static struct cmd_list_element *tcatch_cmdlist; | |
8038 | ||
8039 | /* Like add_cmd, but add the command to both the "catch" and "tcatch" | |
8040 | lists, and pass some additional user data to the command function. */ | |
8041 | static void | |
8042 | add_catch_command (char *name, char *docstring, | |
8043 | void (*sfunc) (char *args, int from_tty, | |
8044 | struct cmd_list_element *command), | |
8045 | void *user_data_catch, | |
8046 | void *user_data_tcatch) | |
8047 | { | |
8048 | struct cmd_list_element *command; | |
8049 | ||
8050 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
8051 | &catch_cmdlist); | |
8052 | set_cmd_sfunc (command, sfunc); | |
8053 | set_cmd_context (command, user_data_catch); | |
8054 | ||
8055 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
8056 | &tcatch_cmdlist); | |
8057 | set_cmd_sfunc (command, sfunc); | |
8058 | set_cmd_context (command, user_data_tcatch); | |
8059 | } | |
8060 | ||
c906108c | 8061 | void |
fba45db2 | 8062 | _initialize_breakpoint (void) |
c906108c | 8063 | { |
fa8d40ab JJ |
8064 | static struct cmd_list_element *breakpoint_set_cmdlist; |
8065 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
c906108c SS |
8066 | struct cmd_list_element *c; |
8067 | ||
84acb35a | 8068 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
84acb35a | 8069 | |
c906108c SS |
8070 | breakpoint_chain = 0; |
8071 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
8072 | before a breakpoint is set. */ | |
8073 | breakpoint_count = 0; | |
8074 | ||
1bedd215 AC |
8075 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
8076 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
8077 | Usage is `ignore N COUNT'.")); | |
c906108c | 8078 | if (xdb_commands) |
c5aa993b | 8079 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 8080 | |
1bedd215 AC |
8081 | add_com ("commands", class_breakpoint, commands_command, _("\ |
8082 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
8083 | Give breakpoint number as argument after \"commands\".\n\ |
8084 | With no argument, the targeted breakpoint is the last one set.\n\ | |
8085 | The commands themselves follow starting on the next line.\n\ | |
8086 | Type a line containing \"end\" to indicate the end of them.\n\ | |
8087 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 8088 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 8089 | |
1bedd215 AC |
8090 | add_com ("condition", class_breakpoint, condition_command, _("\ |
8091 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 8092 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 8093 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 8094 | |
1bedd215 | 8095 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 8096 | Set a temporary breakpoint.\n\ |
c906108c SS |
8097 | Like \"break\" except the breakpoint is only temporary,\n\ |
8098 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
8099 | by using \"enable delete\" on the breakpoint number.\n\ |
8100 | \n" | |
8101 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 8102 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 8103 | |
1bedd215 | 8104 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
31e2b00f | 8105 | Set a hardware assisted breakpoint.\n\ |
c906108c | 8106 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
8107 | some target hardware may not have this support.\n\ |
8108 | \n" | |
8109 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 8110 | set_cmd_completer (c, location_completer); |
c906108c | 8111 | |
1bedd215 | 8112 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 8113 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 8114 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
8115 | so it will be deleted when hit.\n\ |
8116 | \n" | |
8117 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 8118 | set_cmd_completer (c, location_completer); |
c906108c | 8119 | |
1bedd215 AC |
8120 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
8121 | Enable some breakpoints.\n\ | |
c906108c SS |
8122 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8123 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8124 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8125 | With a subcommand you can enable temporarily."), |
c906108c SS |
8126 | &enablelist, "enable ", 1, &cmdlist); |
8127 | if (xdb_commands) | |
1bedd215 AC |
8128 | add_com ("ab", class_breakpoint, enable_command, _("\ |
8129 | Enable some breakpoints.\n\ | |
c906108c SS |
8130 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8131 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8132 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8133 | With a subcommand you can enable temporarily.")); |
c906108c SS |
8134 | |
8135 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
8136 | ||
1bedd215 AC |
8137 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
8138 | Enable some breakpoints.\n\ | |
c906108c SS |
8139 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8140 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8141 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 8142 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 8143 | |
1a966eab AC |
8144 | add_cmd ("once", no_class, enable_once_command, _("\ |
8145 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8146 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8147 | &enablebreaklist); |
8148 | ||
1a966eab AC |
8149 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8150 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8151 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8152 | &enablebreaklist); |
8153 | ||
1a966eab AC |
8154 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8155 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8156 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8157 | &enablelist); |
8158 | ||
1a966eab AC |
8159 | add_cmd ("once", no_class, enable_once_command, _("\ |
8160 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8161 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8162 | &enablelist); |
8163 | ||
1bedd215 AC |
8164 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
8165 | Disable some breakpoints.\n\ | |
c906108c SS |
8166 | Arguments are breakpoint numbers with spaces in between.\n\ |
8167 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 8168 | A disabled breakpoint is not forgotten, but has no effect until reenabled."), |
c906108c SS |
8169 | &disablelist, "disable ", 1, &cmdlist); |
8170 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
8171 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
8172 | if (xdb_commands) | |
1bedd215 AC |
8173 | add_com ("sb", class_breakpoint, disable_command, _("\ |
8174 | Disable some breakpoints.\n\ | |
c906108c SS |
8175 | Arguments are breakpoint numbers with spaces in between.\n\ |
8176 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 8177 | A disabled breakpoint is not forgotten, but has no effect until reenabled.")); |
c906108c | 8178 | |
1a966eab AC |
8179 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
8180 | Disable some breakpoints.\n\ | |
c906108c SS |
8181 | Arguments are breakpoint numbers with spaces in between.\n\ |
8182 | To disable all breakpoints, give no argument.\n\ | |
8183 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
1a966eab | 8184 | This command may be abbreviated \"disable\"."), |
c906108c SS |
8185 | &disablelist); |
8186 | ||
1bedd215 AC |
8187 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
8188 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
8189 | Arguments are breakpoint numbers with spaces in between.\n\ |
8190 | To delete all breakpoints, give no argument.\n\ | |
8191 | \n\ | |
8192 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 8193 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
8194 | &deletelist, "delete ", 1, &cmdlist); |
8195 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 8196 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 8197 | if (xdb_commands) |
1bedd215 AC |
8198 | add_com ("db", class_breakpoint, delete_command, _("\ |
8199 | Delete some breakpoints.\n\ | |
c906108c | 8200 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 8201 | To delete all breakpoints, give no argument.\n")); |
c906108c | 8202 | |
1a966eab AC |
8203 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
8204 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
8205 | Arguments are breakpoint numbers with spaces in between.\n\ |
8206 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 8207 | This command may be abbreviated \"delete\"."), |
c906108c SS |
8208 | &deletelist); |
8209 | ||
1bedd215 AC |
8210 | add_com ("clear", class_breakpoint, clear_command, _("\ |
8211 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
8212 | Argument may be line number, function name, or \"*\" and an address.\n\ |
8213 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
8214 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
8215 | If an address is specified, breakpoints at that address are cleared.\n\ |
8216 | \n\ | |
8217 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
8218 | is executing in.\n\ |
8219 | \n\ | |
1bedd215 | 8220 | See also the \"delete\" command which clears breakpoints by number.")); |
c906108c | 8221 | |
1bedd215 | 8222 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
8223 | Set breakpoint at specified line or function.\n" |
8224 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 8225 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 8226 | |
c906108c SS |
8227 | add_com_alias ("b", "break", class_run, 1); |
8228 | add_com_alias ("br", "break", class_run, 1); | |
8229 | add_com_alias ("bre", "break", class_run, 1); | |
8230 | add_com_alias ("brea", "break", class_run, 1); | |
8231 | ||
502fd408 | 8232 | if (xdb_commands) |
c906108c SS |
8233 | { |
8234 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
8235 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
c906108c SS |
8236 | } |
8237 | ||
8238 | if (dbx_commands) | |
8239 | { | |
1bedd215 AC |
8240 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
8241 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
8242 | &stoplist, "stop ", 1, &cmdlist); |
8243 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 8244 | _("Break in function or address."), &stoplist); |
c5aa993b | 8245 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 8246 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
8247 | add_com ("status", class_info, breakpoints_info, _("\ |
8248 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8249 | The \"Type\" column indicates one of:\n\ |
8250 | \tbreakpoint - normal breakpoint\n\ | |
8251 | \twatchpoint - watchpoint\n\ | |
8252 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8253 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8254 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8255 | address and file/line number respectively.\n\ |
8256 | \n\ | |
8257 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8258 | are set to the address of the last breakpoint listed unless the command\n\ |
8259 | is prefixed with \"server \".\n\n\ | |
c906108c | 8260 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8261 | breakpoint set.")); |
c906108c SS |
8262 | } |
8263 | ||
1bedd215 AC |
8264 | add_info ("breakpoints", breakpoints_info, _("\ |
8265 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8266 | The \"Type\" column indicates one of:\n\ |
8267 | \tbreakpoint - normal breakpoint\n\ | |
8268 | \twatchpoint - watchpoint\n\ | |
8269 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8270 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8271 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8272 | address and file/line number respectively.\n\ |
8273 | \n\ | |
8274 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8275 | are set to the address of the last breakpoint listed unless the command\n\ |
8276 | is prefixed with \"server \".\n\n\ | |
c906108c | 8277 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8278 | breakpoint set.")); |
c906108c SS |
8279 | |
8280 | if (xdb_commands) | |
1bedd215 AC |
8281 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
8282 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8283 | The \"Type\" column indicates one of:\n\ |
8284 | \tbreakpoint - normal breakpoint\n\ | |
8285 | \twatchpoint - watchpoint\n\ | |
8286 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8287 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8288 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8289 | address and file/line number respectively.\n\ |
8290 | \n\ | |
8291 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8292 | are set to the address of the last breakpoint listed unless the command\n\ |
8293 | is prefixed with \"server \".\n\n\ | |
c906108c | 8294 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8295 | breakpoint set.")); |
c906108c | 8296 | |
1a966eab AC |
8297 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
8298 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8299 | The \"Type\" column indicates one of:\n\ |
8300 | \tbreakpoint - normal breakpoint\n\ | |
8301 | \twatchpoint - watchpoint\n\ | |
8302 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
8303 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
8304 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
8305 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
8306 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
8307 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
8308 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
8309 | address and file/line number respectively.\n\ |
8310 | \n\ | |
8311 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8312 | are set to the address of the last breakpoint listed unless the command\n\ |
8313 | is prefixed with \"server \".\n\n\ | |
c906108c | 8314 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 8315 | breakpoint set."), |
c906108c SS |
8316 | &maintenanceinfolist); |
8317 | ||
44feb3ce TT |
8318 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
8319 | Set catchpoints to catch events."), | |
8320 | &catch_cmdlist, "catch ", | |
8321 | 0/*allow-unknown*/, &cmdlist); | |
8322 | ||
8323 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
8324 | Set temporary catchpoints to catch events."), | |
8325 | &tcatch_cmdlist, "tcatch ", | |
8326 | 0/*allow-unknown*/, &cmdlist); | |
8327 | ||
8328 | /* Add catch and tcatch sub-commands. */ | |
8329 | add_catch_command ("catch", _("\ | |
8330 | Catch an exception, when caught.\n\ | |
8331 | With an argument, catch only exceptions with the given name."), | |
8332 | catch_catch_command, | |
8333 | CATCH_PERMANENT, | |
8334 | CATCH_TEMPORARY); | |
8335 | add_catch_command ("throw", _("\ | |
8336 | Catch an exception, when thrown.\n\ | |
8337 | With an argument, catch only exceptions with the given name."), | |
8338 | catch_throw_command, | |
8339 | CATCH_PERMANENT, | |
8340 | CATCH_TEMPORARY); | |
8341 | add_catch_command ("fork", _("Catch calls to fork."), | |
8342 | catch_fork_command_1, | |
8343 | (void *) (uintptr_t) catch_fork_permanent, | |
8344 | (void *) (uintptr_t) catch_fork_temporary); | |
8345 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
8346 | catch_fork_command_1, | |
8347 | (void *) (uintptr_t) catch_vfork_permanent, | |
8348 | (void *) (uintptr_t) catch_vfork_temporary); | |
8349 | add_catch_command ("exec", _("Catch calls to exec."), | |
8350 | catch_exec_command_1, | |
8351 | CATCH_PERMANENT, | |
8352 | CATCH_TEMPORARY); | |
44feb3ce TT |
8353 | add_catch_command ("exception", _("\ |
8354 | Catch Ada exceptions, when raised.\n\ | |
8355 | With an argument, catch only exceptions with the given name."), | |
8356 | catch_ada_exception_command, | |
8357 | CATCH_PERMANENT, | |
8358 | CATCH_TEMPORARY); | |
8359 | add_catch_command ("assert", _("\ | |
8360 | Catch failed Ada assertions, when raised.\n\ | |
8361 | With an argument, catch only exceptions with the given name."), | |
8362 | catch_assert_command, | |
8363 | CATCH_PERMANENT, | |
8364 | CATCH_TEMPORARY); | |
c5aa993b | 8365 | |
1bedd215 AC |
8366 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
8367 | Set a watchpoint for an expression.\n\ | |
c906108c | 8368 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8369 | an expression changes.")); |
65d12d83 | 8370 | set_cmd_completer (c, expression_completer); |
c906108c | 8371 | |
1bedd215 AC |
8372 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
8373 | Set a read watchpoint for an expression.\n\ | |
c906108c | 8374 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8375 | an expression is read.")); |
65d12d83 | 8376 | set_cmd_completer (c, expression_completer); |
c906108c | 8377 | |
1bedd215 AC |
8378 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
8379 | Set a watchpoint for an expression.\n\ | |
c906108c | 8380 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8381 | an expression is either read or written.")); |
65d12d83 | 8382 | set_cmd_completer (c, expression_completer); |
c906108c SS |
8383 | |
8384 | add_info ("watchpoints", breakpoints_info, | |
1bedd215 | 8385 | _("Synonym for ``info breakpoints''.")); |
c906108c SS |
8386 | |
8387 | ||
920d2a44 AC |
8388 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
8389 | respond to changes - contrary to the description. */ | |
85c07804 AC |
8390 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
8391 | &can_use_hw_watchpoints, _("\ | |
8392 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
8393 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
8394 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
8395 | such is available. (However, any hardware watchpoints that were\n\ | |
8396 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
8397 | hardware.)"), |
8398 | NULL, | |
920d2a44 | 8399 | show_can_use_hw_watchpoints, |
85c07804 | 8400 | &setlist, &showlist); |
c906108c SS |
8401 | |
8402 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 8403 | |
1bedd215 | 8404 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
8405 | Breakpoint specific settings\n\ |
8406 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 8407 | pending breakpoint behavior"), |
fa8d40ab JJ |
8408 | &breakpoint_set_cmdlist, "set breakpoint ", |
8409 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 8410 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
8411 | Breakpoint specific settings\n\ |
8412 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 8413 | pending breakpoint behavior"), |
fa8d40ab JJ |
8414 | &breakpoint_show_cmdlist, "show breakpoint ", |
8415 | 0/*allow-unknown*/, &showlist); | |
8416 | ||
7915a72c AC |
8417 | add_setshow_auto_boolean_cmd ("pending", no_class, |
8418 | &pending_break_support, _("\ | |
8419 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
8420 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
8421 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
8422 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
8423 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 8424 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 8425 | NULL, |
920d2a44 | 8426 | show_pending_break_support, |
6e1d7d6c AC |
8427 | &breakpoint_set_cmdlist, |
8428 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
8429 | |
8430 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
8431 | |
8432 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
8433 | &automatic_hardware_breakpoints, _("\ | |
8434 | Set automatic usage of hardware breakpoints."), _("\ | |
8435 | Show automatic usage of hardware breakpoints."), _("\ | |
8436 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
8437 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
8438 | a warning will be emitted for such breakpoints."), | |
8439 | NULL, | |
8440 | show_automatic_hardware_breakpoints, | |
8441 | &breakpoint_set_cmdlist, | |
8442 | &breakpoint_show_cmdlist); | |
74960c60 | 8443 | |
33e5cbd6 PA |
8444 | add_setshow_enum_cmd ("always-inserted", class_support, |
8445 | always_inserted_enums, &always_inserted_mode, _("\ | |
74960c60 VP |
8446 | Set mode for inserting breakpoints."), _("\ |
8447 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
8448 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
8449 | resumed, and removed when execution stops. When this mode is on,\n\ | |
8450 | breakpoints are inserted immediately and removed only when the user\n\ | |
8451 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
8452 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
8453 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
8454 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
8455 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
74960c60 VP |
8456 | NULL, |
8457 | &show_always_inserted_mode, | |
8458 | &breakpoint_set_cmdlist, | |
8459 | &breakpoint_show_cmdlist); | |
765dc015 VP |
8460 | |
8461 | automatic_hardware_breakpoints = 1; | |
c906108c | 8462 | } |