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