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" | |
a6d9a66e | 23 | #include "arch-utils.h" |
c906108c | 24 | #include <ctype.h> |
776592bf | 25 | #include "hashtab.h" |
c906108c SS |
26 | #include "symtab.h" |
27 | #include "frame.h" | |
28 | #include "breakpoint.h" | |
1042e4c0 | 29 | #include "tracepoint.h" |
c906108c SS |
30 | #include "gdbtypes.h" |
31 | #include "expression.h" | |
32 | #include "gdbcore.h" | |
33 | #include "gdbcmd.h" | |
34 | #include "value.h" | |
35 | #include "command.h" | |
36 | #include "inferior.h" | |
37 | #include "gdbthread.h" | |
38 | #include "target.h" | |
39 | #include "language.h" | |
40 | #include "gdb_string.h" | |
41 | #include "demangle.h" | |
42 | #include "annotate.h" | |
43 | #include "symfile.h" | |
44 | #include "objfiles.h" | |
0378c332 | 45 | #include "source.h" |
c5f0f3d0 | 46 | #include "linespec.h" |
c94fdfd0 | 47 | #include "completer.h" |
5b7f31a4 | 48 | #include "gdb.h" |
8b93c638 | 49 | #include "ui-out.h" |
e1507482 | 50 | #include "cli/cli-script.h" |
0225421b | 51 | #include "gdb_assert.h" |
fe898f56 | 52 | #include "block.h" |
a77053c2 | 53 | #include "solib.h" |
84acb35a JJ |
54 | #include "solist.h" |
55 | #include "observer.h" | |
60250e8b | 56 | #include "exceptions.h" |
765dc015 | 57 | #include "memattr.h" |
f7f9143b | 58 | #include "ada-lang.h" |
d1aa2f50 | 59 | #include "top.h" |
fa4727a6 | 60 | #include "wrapper.h" |
79a45b7d | 61 | #include "valprint.h" |
c906108c | 62 | |
1042e4c0 SS |
63 | /* readline include files */ |
64 | #include "readline/readline.h" | |
65 | #include "readline/history.h" | |
66 | ||
67 | /* readline defines this. */ | |
68 | #undef savestring | |
69 | ||
034dad6f | 70 | #include "mi/mi-common.h" |
104c1213 | 71 | |
44feb3ce TT |
72 | /* Arguments to pass as context to some catch command handlers. */ |
73 | #define CATCH_PERMANENT ((void *) (uintptr_t) 0) | |
74 | #define CATCH_TEMPORARY ((void *) (uintptr_t) 1) | |
c906108c | 75 | |
44feb3ce | 76 | /* Prototypes for local functions. */ |
c906108c | 77 | |
a14ed312 | 78 | static void enable_delete_command (char *, int); |
c906108c | 79 | |
a14ed312 | 80 | static void enable_delete_breakpoint (struct breakpoint *); |
c906108c | 81 | |
a14ed312 | 82 | static void enable_once_command (char *, int); |
c906108c | 83 | |
a14ed312 | 84 | static void enable_once_breakpoint (struct breakpoint *); |
c906108c | 85 | |
a14ed312 | 86 | static void disable_command (char *, int); |
c906108c | 87 | |
a14ed312 | 88 | static void enable_command (char *, int); |
c906108c | 89 | |
a14ed312 | 90 | static void map_breakpoint_numbers (char *, void (*)(struct breakpoint *)); |
c906108c | 91 | |
a14ed312 | 92 | static void ignore_command (char *, int); |
c906108c | 93 | |
4efb68b1 | 94 | static int breakpoint_re_set_one (void *); |
c906108c | 95 | |
a14ed312 | 96 | static void clear_command (char *, int); |
c906108c | 97 | |
a14ed312 | 98 | static void catch_command (char *, int); |
c906108c | 99 | |
a14ed312 | 100 | static void watch_command (char *, int); |
c906108c | 101 | |
a14ed312 | 102 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 103 | |
98deb0da | 104 | static void break_command_1 (char *, int, int); |
c906108c | 105 | |
a14ed312 | 106 | static void mention (struct breakpoint *); |
c906108c | 107 | |
63c252f8 PM |
108 | /* This function is used in gdbtk sources and thus can not be made static. */ |
109 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, | |
a6d9a66e UW |
110 | struct symtab_and_line, |
111 | enum bptype); | |
c906108c | 112 | |
9f60f21b | 113 | static void check_duplicates (struct breakpoint *); |
c906108c | 114 | |
76897487 KB |
115 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
116 | ||
a6d9a66e UW |
117 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
118 | CORE_ADDR bpaddr, | |
88f7da05 | 119 | enum bptype bptype); |
76897487 | 120 | |
5af949e3 UW |
121 | static void describe_other_breakpoints (struct gdbarch *, CORE_ADDR, |
122 | struct obj_section *, int); | |
c906108c | 123 | |
a14ed312 | 124 | static void breakpoints_info (char *, int); |
c906108c | 125 | |
a14ed312 | 126 | static void breakpoint_1 (int, int); |
c906108c | 127 | |
89f9893c | 128 | static bpstat bpstat_alloc (const struct bp_location *, bpstat); |
c906108c | 129 | |
4efb68b1 | 130 | static int breakpoint_cond_eval (void *); |
c906108c | 131 | |
4efb68b1 | 132 | static void cleanup_executing_breakpoints (void *); |
c906108c | 133 | |
a14ed312 | 134 | static void commands_command (char *, int); |
c906108c | 135 | |
a14ed312 | 136 | static void condition_command (char *, int); |
c906108c | 137 | |
a14ed312 | 138 | static int get_number_trailer (char **, int); |
c906108c | 139 | |
a14ed312 | 140 | void set_breakpoint_count (int); |
c906108c | 141 | |
c5aa993b JM |
142 | typedef enum |
143 | { | |
144 | mark_inserted, | |
145 | mark_uninserted | |
146 | } | |
147 | insertion_state_t; | |
c906108c | 148 | |
0bde7532 | 149 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
c906108c | 150 | |
a14ed312 | 151 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
152 | |
153 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 154 | |
4efb68b1 | 155 | static int watchpoint_check (void *); |
c906108c | 156 | |
a14ed312 | 157 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 158 | |
a14ed312 | 159 | static int hw_breakpoint_used_count (void); |
c906108c | 160 | |
a14ed312 | 161 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 162 | |
a14ed312 | 163 | static void hbreak_command (char *, int); |
c906108c | 164 | |
a14ed312 | 165 | static void thbreak_command (char *, int); |
c906108c | 166 | |
a14ed312 | 167 | static void watch_command_1 (char *, int, int); |
c906108c | 168 | |
a14ed312 | 169 | static void rwatch_command (char *, int); |
c906108c | 170 | |
a14ed312 | 171 | static void awatch_command (char *, int); |
c906108c | 172 | |
a14ed312 | 173 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 174 | |
a14ed312 | 175 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 176 | |
a14ed312 | 177 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 178 | |
a14ed312 | 179 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 180 | |
a14ed312 | 181 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 182 | |
a14ed312 | 183 | static char *ep_parse_optional_filename (char **arg); |
7a292a7a | 184 | |
d85310f7 MS |
185 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
186 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 187 | |
a14ed312 | 188 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 189 | |
a14ed312 | 190 | static void ep_skip_leading_whitespace (char **s); |
7a292a7a | 191 | |
1aafd4da UW |
192 | static int single_step_breakpoint_inserted_here_p (CORE_ADDR pc); |
193 | ||
fe3f5fa8 VP |
194 | static void free_bp_location (struct bp_location *loc); |
195 | ||
39d61571 | 196 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 197 | |
b60e7edf | 198 | static void update_global_location_list (int); |
a5606eee | 199 | |
b60e7edf | 200 | static void update_global_location_list_nothrow (int); |
74960c60 VP |
201 | |
202 | static int is_hardware_watchpoint (struct breakpoint *bpt); | |
203 | ||
204 | static void insert_breakpoint_locations (void); | |
a5606eee | 205 | |
1042e4c0 SS |
206 | static void tracepoints_info (char *, int); |
207 | ||
208 | static void delete_trace_command (char *, int); | |
209 | ||
210 | static void enable_trace_command (char *, int); | |
211 | ||
212 | static void disable_trace_command (char *, int); | |
213 | ||
214 | static void trace_pass_command (char *, int); | |
215 | ||
3daf8fe5 JG |
216 | static void skip_prologue_sal (struct symtab_and_line *sal); |
217 | ||
218 | ||
f3b1572e PA |
219 | /* Flag indicating that a command has proceeded the inferior past the |
220 | current breakpoint. */ | |
221 | ||
222 | static int breakpoint_proceeded; | |
223 | ||
2cec12e5 AR |
224 | static const char * |
225 | bpdisp_text (enum bpdisp disp) | |
226 | { | |
227 | /* NOTE: the following values are a part of MI protocol and represent | |
228 | values of 'disp' field returned when inferior stops at a breakpoint. */ | |
229 | static char *bpdisps[] = {"del", "dstp", "dis", "keep"}; | |
230 | return bpdisps[(int) disp]; | |
231 | } | |
c906108c | 232 | |
2cec12e5 | 233 | /* Prototypes for exported functions. */ |
c906108c SS |
234 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
235 | if such is available. */ | |
236 | static int can_use_hw_watchpoints; | |
237 | ||
920d2a44 AC |
238 | static void |
239 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
240 | struct cmd_list_element *c, | |
241 | const char *value) | |
242 | { | |
243 | fprintf_filtered (file, _("\ | |
244 | Debugger's willingness to use watchpoint hardware is %s.\n"), | |
245 | value); | |
246 | } | |
247 | ||
fa8d40ab JJ |
248 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
249 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
250 | for unrecognized breakpoint locations. | |
251 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ | |
252 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
253 | static void |
254 | show_pending_break_support (struct ui_file *file, int from_tty, | |
255 | struct cmd_list_element *c, | |
256 | const char *value) | |
257 | { | |
258 | fprintf_filtered (file, _("\ | |
259 | Debugger's behavior regarding pending breakpoints is %s.\n"), | |
260 | value); | |
261 | } | |
fa8d40ab | 262 | |
765dc015 VP |
263 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
264 | set with "break" but falling in read-only memory. | |
265 | If 0, gdb will warn about such breakpoints, but won't automatically | |
266 | use hardware breakpoints. */ | |
267 | static int automatic_hardware_breakpoints; | |
268 | static void | |
269 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
270 | struct cmd_list_element *c, | |
271 | const char *value) | |
272 | { | |
273 | fprintf_filtered (file, _("\ | |
274 | Automatic usage of hardware breakpoints is %s.\n"), | |
275 | value); | |
276 | } | |
277 | ||
33e5cbd6 PA |
278 | /* If on, gdb will keep breakpoints inserted even as inferior is |
279 | stopped, and immediately insert any new breakpoints. If off, gdb | |
280 | will insert breakpoints into inferior only when resuming it, and | |
281 | will remove breakpoints upon stop. If auto, GDB will behave as ON | |
282 | if in non-stop mode, and as OFF if all-stop mode.*/ | |
283 | ||
284 | static const char always_inserted_auto[] = "auto"; | |
285 | static const char always_inserted_on[] = "on"; | |
286 | static const char always_inserted_off[] = "off"; | |
287 | static const char *always_inserted_enums[] = { | |
288 | always_inserted_auto, | |
289 | always_inserted_off, | |
290 | always_inserted_on, | |
291 | NULL | |
292 | }; | |
293 | static const char *always_inserted_mode = always_inserted_auto; | |
294 | static void | |
74960c60 | 295 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 296 | struct cmd_list_element *c, const char *value) |
74960c60 | 297 | { |
33e5cbd6 PA |
298 | if (always_inserted_mode == always_inserted_auto) |
299 | fprintf_filtered (file, _("\ | |
300 | Always inserted breakpoint mode is %s (currently %s).\n"), | |
301 | value, | |
302 | breakpoints_always_inserted_mode () ? "on" : "off"); | |
303 | else | |
304 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), value); | |
74960c60 VP |
305 | } |
306 | ||
33e5cbd6 PA |
307 | int |
308 | breakpoints_always_inserted_mode (void) | |
309 | { | |
310 | return (always_inserted_mode == always_inserted_on | |
311 | || (always_inserted_mode == always_inserted_auto && non_stop)); | |
312 | } | |
765dc015 | 313 | |
a14ed312 | 314 | void _initialize_breakpoint (void); |
c906108c | 315 | |
c906108c SS |
316 | /* Are we executing breakpoint commands? */ |
317 | static int executing_breakpoint_commands; | |
318 | ||
c02f5703 MS |
319 | /* Are overlay event breakpoints enabled? */ |
320 | static int overlay_events_enabled; | |
321 | ||
8bea4e01 UW |
322 | /* Are we executing startup code? */ |
323 | static int executing_startup; | |
324 | ||
c906108c SS |
325 | /* Walk the following statement or block through all breakpoints. |
326 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
327 | breakpoint. */ | |
328 | ||
5c44784c | 329 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 330 | |
5c44784c JM |
331 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
332 | for (B = breakpoint_chain; \ | |
333 | B ? (TMP=B->next, 1): 0; \ | |
334 | B = TMP) | |
c906108c | 335 | |
7cc221ef DJ |
336 | /* Similar iterators for the low-level breakpoints. */ |
337 | ||
0d381245 | 338 | #define ALL_BP_LOCATIONS(B) for (B = bp_location_chain; B; B = B->global_next) |
7cc221ef DJ |
339 | |
340 | #define ALL_BP_LOCATIONS_SAFE(B,TMP) \ | |
341 | for (B = bp_location_chain; \ | |
0d381245 | 342 | B ? (TMP=B->global_next, 1): 0; \ |
7cc221ef DJ |
343 | B = TMP) |
344 | ||
1042e4c0 SS |
345 | /* Iterator for tracepoints only. */ |
346 | ||
347 | #define ALL_TRACEPOINTS(B) \ | |
348 | for (B = breakpoint_chain; B; B = B->next) \ | |
349 | if ((B)->type == bp_tracepoint) | |
350 | ||
7cc221ef | 351 | /* Chains of all breakpoints defined. */ |
c906108c SS |
352 | |
353 | struct breakpoint *breakpoint_chain; | |
354 | ||
7cc221ef DJ |
355 | struct bp_location *bp_location_chain; |
356 | ||
20874c92 VP |
357 | /* The locations that no longer correspond to any breakpoint, |
358 | unlinked from bp_location_chain, but for which a hit | |
359 | may still be reported by a target. */ | |
360 | VEC(bp_location_p) *moribund_locations = NULL; | |
361 | ||
c906108c SS |
362 | /* Number of last breakpoint made. */ |
363 | ||
364 | int breakpoint_count; | |
365 | ||
1042e4c0 SS |
366 | /* Number of last tracepoint made. */ |
367 | ||
368 | int tracepoint_count; | |
369 | ||
468d015d JJ |
370 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
371 | static int | |
372 | breakpoint_enabled (struct breakpoint *b) | |
373 | { | |
0d381245 | 374 | return (b->enable_state == bp_enabled); |
468d015d JJ |
375 | } |
376 | ||
c906108c SS |
377 | /* Set breakpoint count to NUM. */ |
378 | ||
379 | void | |
fba45db2 | 380 | set_breakpoint_count (int num) |
c906108c SS |
381 | { |
382 | breakpoint_count = num; | |
4fa62494 | 383 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
384 | } |
385 | ||
386 | /* Used in run_command to zero the hit count when a new run starts. */ | |
387 | ||
388 | void | |
fba45db2 | 389 | clear_breakpoint_hit_counts (void) |
c906108c SS |
390 | { |
391 | struct breakpoint *b; | |
392 | ||
393 | ALL_BREAKPOINTS (b) | |
394 | b->hit_count = 0; | |
395 | } | |
396 | ||
397 | /* Default address, symtab and line to put a breakpoint at | |
398 | for "break" command with no arg. | |
399 | if default_breakpoint_valid is zero, the other three are | |
400 | not valid, and "break" with no arg is an error. | |
401 | ||
402 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
403 | ||
404 | int default_breakpoint_valid; | |
405 | CORE_ADDR default_breakpoint_address; | |
406 | struct symtab *default_breakpoint_symtab; | |
407 | int default_breakpoint_line; | |
408 | \f | |
409 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
410 | Advance *PP after the string and any trailing whitespace. | |
411 | ||
412 | Currently the string can either be a number or "$" followed by the name | |
413 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c | 414 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
40c03ae8 EZ |
415 | |
416 | If the string is a NULL pointer, that denotes the last breakpoint. | |
5c44784c JM |
417 | |
418 | TRAILER is a character which can be found after the number; most | |
419 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 420 | static int |
fba45db2 | 421 | get_number_trailer (char **pp, int trailer) |
c906108c | 422 | { |
5c44784c | 423 | int retval = 0; /* default */ |
c906108c SS |
424 | char *p = *pp; |
425 | ||
426 | if (p == NULL) | |
427 | /* Empty line means refer to the last breakpoint. */ | |
428 | return breakpoint_count; | |
429 | else if (*p == '$') | |
430 | { | |
431 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 432 | to pass to lookup_internalvar(). */ |
c906108c SS |
433 | char *varname; |
434 | char *start = ++p; | |
4fa62494 | 435 | LONGEST val; |
c906108c SS |
436 | |
437 | while (isalnum (*p) || *p == '_') | |
438 | p++; | |
439 | varname = (char *) alloca (p - start + 1); | |
440 | strncpy (varname, start, p - start); | |
441 | varname[p - start] = '\0'; | |
4fa62494 UW |
442 | if (get_internalvar_integer (lookup_internalvar (varname), &val)) |
443 | retval = (int) val; | |
5c44784c JM |
444 | else |
445 | { | |
a3f17187 | 446 | printf_filtered (_("Convenience variable must have integer value.\n")); |
5c44784c JM |
447 | retval = 0; |
448 | } | |
c906108c SS |
449 | } |
450 | else | |
451 | { | |
452 | if (*p == '-') | |
453 | ++p; | |
454 | while (*p >= '0' && *p <= '9') | |
455 | ++p; | |
456 | if (p == *pp) | |
457 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
458 | { |
459 | /* Skip non-numeric token */ | |
460 | while (*p && !isspace((int) *p)) | |
461 | ++p; | |
462 | /* Return zero, which caller must interpret as error. */ | |
463 | retval = 0; | |
464 | } | |
465 | else | |
466 | retval = atoi (*pp); | |
467 | } | |
468 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
469 | { | |
470 | /* Trailing junk: return 0 and let caller print error msg. */ | |
471 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
472 | ++p; | |
473 | retval = 0; | |
c906108c | 474 | } |
c906108c SS |
475 | while (isspace (*p)) |
476 | p++; | |
477 | *pp = p; | |
478 | return retval; | |
479 | } | |
5c44784c | 480 | |
11cf8741 | 481 | |
5c44784c JM |
482 | /* Like get_number_trailer, but don't allow a trailer. */ |
483 | int | |
fba45db2 | 484 | get_number (char **pp) |
5c44784c JM |
485 | { |
486 | return get_number_trailer (pp, '\0'); | |
487 | } | |
488 | ||
489 | /* Parse a number or a range. | |
490 | * A number will be of the form handled by get_number. | |
491 | * A range will be of the form <number1> - <number2>, and | |
492 | * will represent all the integers between number1 and number2, | |
493 | * inclusive. | |
494 | * | |
495 | * While processing a range, this fuction is called iteratively; | |
496 | * At each call it will return the next value in the range. | |
497 | * | |
498 | * At the beginning of parsing a range, the char pointer PP will | |
499 | * be advanced past <number1> and left pointing at the '-' token. | |
500 | * Subsequent calls will not advance the pointer until the range | |
501 | * is completed. The call that completes the range will advance | |
502 | * pointer PP past <number2>. | |
503 | */ | |
504 | ||
505 | int | |
fba45db2 | 506 | get_number_or_range (char **pp) |
5c44784c JM |
507 | { |
508 | static int last_retval, end_value; | |
509 | static char *end_ptr; | |
510 | static int in_range = 0; | |
511 | ||
512 | if (**pp != '-') | |
513 | { | |
514 | /* Default case: pp is pointing either to a solo number, | |
515 | or to the first number of a range. */ | |
516 | last_retval = get_number_trailer (pp, '-'); | |
517 | if (**pp == '-') | |
518 | { | |
519 | char **temp; | |
520 | ||
521 | /* This is the start of a range (<number1> - <number2>). | |
522 | Skip the '-', parse and remember the second number, | |
523 | and also remember the end of the final token. */ | |
524 | ||
525 | temp = &end_ptr; | |
526 | end_ptr = *pp + 1; | |
527 | while (isspace ((int) *end_ptr)) | |
528 | end_ptr++; /* skip white space */ | |
529 | end_value = get_number (temp); | |
530 | if (end_value < last_retval) | |
531 | { | |
8a3fe4f8 | 532 | error (_("inverted range")); |
5c44784c JM |
533 | } |
534 | else if (end_value == last_retval) | |
535 | { | |
536 | /* degenerate range (number1 == number2). Advance the | |
537 | token pointer so that the range will be treated as a | |
538 | single number. */ | |
539 | *pp = end_ptr; | |
540 | } | |
541 | else | |
542 | in_range = 1; | |
543 | } | |
544 | } | |
545 | else if (! in_range) | |
8a3fe4f8 | 546 | error (_("negative value")); |
5c44784c JM |
547 | else |
548 | { | |
549 | /* pp points to the '-' that betokens a range. All | |
550 | number-parsing has already been done. Return the next | |
551 | integer value (one greater than the saved previous value). | |
552 | Do not advance the token pointer 'pp' until the end of range | |
553 | is reached. */ | |
554 | ||
555 | if (++last_retval == end_value) | |
556 | { | |
557 | /* End of range reached; advance token pointer. */ | |
558 | *pp = end_ptr; | |
559 | in_range = 0; | |
560 | } | |
561 | } | |
562 | return last_retval; | |
563 | } | |
564 | ||
565 | ||
c906108c SS |
566 | \f |
567 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
568 | ||
569 | static void | |
fba45db2 | 570 | condition_command (char *arg, int from_tty) |
c906108c | 571 | { |
52f0bd74 | 572 | struct breakpoint *b; |
c906108c | 573 | char *p; |
52f0bd74 | 574 | int bnum; |
c906108c SS |
575 | |
576 | if (arg == 0) | |
e2e0b3e5 | 577 | error_no_arg (_("breakpoint number")); |
c906108c SS |
578 | |
579 | p = arg; | |
580 | bnum = get_number (&p); | |
5c44784c | 581 | if (bnum == 0) |
8a3fe4f8 | 582 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
583 | |
584 | ALL_BREAKPOINTS (b) | |
585 | if (b->number == bnum) | |
2f069f6f JB |
586 | { |
587 | struct bp_location *loc = b->loc; | |
588 | for (; loc; loc = loc->next) | |
589 | { | |
590 | if (loc->cond) | |
591 | { | |
592 | xfree (loc->cond); | |
593 | loc->cond = 0; | |
594 | } | |
595 | } | |
596 | if (b->cond_string != NULL) | |
597 | xfree (b->cond_string); | |
c906108c | 598 | |
2f069f6f JB |
599 | if (*p == 0) |
600 | { | |
601 | b->cond_string = NULL; | |
602 | if (from_tty) | |
603 | printf_filtered (_("Breakpoint %d now unconditional.\n"), bnum); | |
604 | } | |
605 | else | |
606 | { | |
607 | arg = p; | |
608 | /* I don't know if it matters whether this is the string the user | |
609 | typed in or the decompiled expression. */ | |
1b36a34b | 610 | b->cond_string = xstrdup (arg); |
2f069f6f JB |
611 | b->condition_not_parsed = 0; |
612 | for (loc = b->loc; loc; loc = loc->next) | |
613 | { | |
614 | arg = p; | |
615 | loc->cond = | |
616 | parse_exp_1 (&arg, block_for_pc (loc->address), 0); | |
617 | if (*arg) | |
618 | error (_("Junk at end of expression")); | |
619 | } | |
620 | } | |
621 | breakpoints_changed (); | |
383f836e | 622 | observer_notify_breakpoint_modified (b->number); |
2f069f6f JB |
623 | return; |
624 | } | |
c906108c | 625 | |
8a3fe4f8 | 626 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
627 | } |
628 | ||
c906108c | 629 | static void |
fba45db2 | 630 | commands_command (char *arg, int from_tty) |
c906108c | 631 | { |
52f0bd74 | 632 | struct breakpoint *b; |
c906108c | 633 | char *p; |
52f0bd74 | 634 | int bnum; |
c906108c SS |
635 | struct command_line *l; |
636 | ||
637 | /* If we allowed this, we would have problems with when to | |
638 | free the storage, if we change the commands currently | |
639 | being read from. */ | |
640 | ||
641 | if (executing_breakpoint_commands) | |
8a3fe4f8 | 642 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); |
c906108c SS |
643 | |
644 | p = arg; | |
645 | bnum = get_number (&p); | |
5c44784c | 646 | |
c906108c | 647 | if (p && *p) |
8a3fe4f8 | 648 | error (_("Unexpected extra arguments following breakpoint number.")); |
c5aa993b | 649 | |
c906108c SS |
650 | ALL_BREAKPOINTS (b) |
651 | if (b->number == bnum) | |
9ebf4acf AC |
652 | { |
653 | char *tmpbuf = xstrprintf ("Type commands for when breakpoint %d is hit, one per line.", | |
654 | bnum); | |
655 | struct cleanup *cleanups = make_cleanup (xfree, tmpbuf); | |
311a4e6b | 656 | l = read_command_lines (tmpbuf, from_tty, 1); |
9ebf4acf AC |
657 | do_cleanups (cleanups); |
658 | free_command_lines (&b->commands); | |
659 | b->commands = l; | |
660 | breakpoints_changed (); | |
383f836e | 661 | observer_notify_breakpoint_modified (b->number); |
9ebf4acf | 662 | return; |
c5aa993b | 663 | } |
8a3fe4f8 | 664 | error (_("No breakpoint number %d."), bnum); |
c906108c | 665 | } |
40c03ae8 EZ |
666 | |
667 | /* Like commands_command, but instead of reading the commands from | |
668 | input stream, takes them from an already parsed command structure. | |
669 | ||
670 | This is used by cli-script.c to DTRT with breakpoint commands | |
671 | that are part of if and while bodies. */ | |
672 | enum command_control_type | |
673 | commands_from_control_command (char *arg, struct command_line *cmd) | |
674 | { | |
675 | struct breakpoint *b; | |
676 | char *p; | |
677 | int bnum; | |
678 | ||
679 | /* If we allowed this, we would have problems with when to | |
680 | free the storage, if we change the commands currently | |
681 | being read from. */ | |
682 | ||
683 | if (executing_breakpoint_commands) | |
684 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); | |
685 | ||
686 | /* An empty string for the breakpoint number means the last | |
687 | breakpoint, but get_number expects a NULL pointer. */ | |
688 | if (arg && !*arg) | |
689 | p = NULL; | |
690 | else | |
691 | p = arg; | |
692 | bnum = get_number (&p); | |
693 | ||
694 | if (p && *p) | |
695 | error (_("Unexpected extra arguments following breakpoint number.")); | |
696 | ||
697 | ALL_BREAKPOINTS (b) | |
698 | if (b->number == bnum) | |
699 | { | |
700 | free_command_lines (&b->commands); | |
701 | if (cmd->body_count != 1) | |
702 | error (_("Invalid \"commands\" block structure.")); | |
703 | /* We need to copy the commands because if/while will free the | |
704 | list after it finishes execution. */ | |
705 | b->commands = copy_command_lines (cmd->body_list[0]); | |
706 | breakpoints_changed (); | |
383f836e | 707 | observer_notify_breakpoint_modified (b->number); |
40c03ae8 | 708 | return simple_control; |
2f069f6f | 709 | } |
40c03ae8 EZ |
710 | error (_("No breakpoint number %d."), bnum); |
711 | } | |
c906108c | 712 | \f |
8defab1a DJ |
713 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
714 | by replacing any memory breakpoints with their shadowed contents. */ | |
c906108c | 715 | |
8defab1a DJ |
716 | void |
717 | breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr, LONGEST len) | |
c906108c | 718 | { |
8defab1a | 719 | struct bp_location *b; |
c906108c SS |
720 | CORE_ADDR bp_addr = 0; |
721 | int bp_size = 0; | |
8defab1a | 722 | int bptoffset = 0; |
c5aa993b | 723 | |
ffce0d52 | 724 | ALL_BP_LOCATIONS (b) |
c5aa993b | 725 | { |
ffce0d52 | 726 | if (b->owner->type == bp_none) |
8a3fe4f8 | 727 | warning (_("reading through apparently deleted breakpoint #%d?"), |
ffce0d52 DJ |
728 | b->owner->number); |
729 | ||
730 | if (b->loc_type != bp_loc_software_breakpoint) | |
c5aa993b | 731 | continue; |
ffce0d52 | 732 | if (!b->inserted) |
c5aa993b JM |
733 | continue; |
734 | /* Addresses and length of the part of the breakpoint that | |
735 | we need to copy. */ | |
8181d85f DJ |
736 | bp_addr = b->target_info.placed_address; |
737 | bp_size = b->target_info.shadow_len; | |
c5aa993b | 738 | if (bp_size == 0) |
8181d85f | 739 | /* bp isn't valid, or doesn't shadow memory. */ |
c5aa993b | 740 | continue; |
8defab1a | 741 | |
c5aa993b JM |
742 | if (bp_addr + bp_size <= memaddr) |
743 | /* The breakpoint is entirely before the chunk of memory we | |
744 | are reading. */ | |
745 | continue; | |
8defab1a | 746 | |
c5aa993b JM |
747 | if (bp_addr >= memaddr + len) |
748 | /* The breakpoint is entirely after the chunk of memory we are | |
749 | reading. */ | |
750 | continue; | |
c5aa993b | 751 | |
8defab1a DJ |
752 | /* Offset within shadow_contents. */ |
753 | if (bp_addr < memaddr) | |
754 | { | |
755 | /* Only copy the second part of the breakpoint. */ | |
756 | bp_size -= memaddr - bp_addr; | |
757 | bptoffset = memaddr - bp_addr; | |
758 | bp_addr = memaddr; | |
759 | } | |
c5aa993b | 760 | |
8defab1a DJ |
761 | if (bp_addr + bp_size > memaddr + len) |
762 | { | |
763 | /* Only copy the first part of the breakpoint. */ | |
764 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
765 | } | |
c5aa993b | 766 | |
8defab1a DJ |
767 | memcpy (buf + bp_addr - memaddr, |
768 | b->target_info.shadow_contents + bptoffset, bp_size); | |
c5aa993b | 769 | } |
c906108c | 770 | } |
c906108c | 771 | \f |
c5aa993b | 772 | |
687595f9 | 773 | /* A wrapper function for inserting catchpoints. */ |
9cbc821d | 774 | static void |
687595f9 DJ |
775 | insert_catchpoint (struct ui_out *uo, void *args) |
776 | { | |
777 | struct breakpoint *b = (struct breakpoint *) args; | |
778 | int val = -1; | |
779 | ||
fe798b75 JB |
780 | gdb_assert (b->type == bp_catchpoint); |
781 | gdb_assert (b->ops != NULL && b->ops->insert != NULL); | |
782 | ||
783 | b->ops->insert (b); | |
687595f9 DJ |
784 | } |
785 | ||
a5606eee VP |
786 | static int |
787 | is_hardware_watchpoint (struct breakpoint *bpt) | |
788 | { | |
789 | return (bpt->type == bp_hardware_watchpoint | |
790 | || bpt->type == bp_read_watchpoint | |
791 | || bpt->type == bp_access_watchpoint); | |
792 | } | |
7270d8f2 | 793 | |
fa4727a6 DJ |
794 | /* Find the current value of a watchpoint on EXP. Return the value in |
795 | *VALP and *RESULTP and the chain of intermediate and final values | |
796 | in *VAL_CHAIN. RESULTP and VAL_CHAIN may be NULL if the caller does | |
797 | not need them. | |
798 | ||
ccc57cf9 | 799 | If a memory error occurs while evaluating the expression, *RESULTP will |
fa4727a6 DJ |
800 | be set to NULL. *RESULTP may be a lazy value, if the result could |
801 | not be read from memory. It is used to determine whether a value | |
802 | is user-specified (we should watch the whole value) or intermediate | |
803 | (we should watch only the bit used to locate the final value). | |
804 | ||
805 | If the final value, or any intermediate value, could not be read | |
806 | from memory, *VALP will be set to NULL. *VAL_CHAIN will still be | |
807 | set to any referenced values. *VALP will never be a lazy value. | |
808 | This is the value which we store in struct breakpoint. | |
809 | ||
810 | If VAL_CHAIN is non-NULL, *VAL_CHAIN will be released from the | |
811 | value chain. The caller must free the values individually. If | |
812 | VAL_CHAIN is NULL, all generated values will be left on the value | |
813 | chain. */ | |
814 | ||
815 | static void | |
816 | fetch_watchpoint_value (struct expression *exp, struct value **valp, | |
817 | struct value **resultp, struct value **val_chain) | |
818 | { | |
819 | struct value *mark, *new_mark, *result; | |
ccc57cf9 | 820 | volatile struct gdb_exception ex; |
fa4727a6 DJ |
821 | |
822 | *valp = NULL; | |
823 | if (resultp) | |
824 | *resultp = NULL; | |
825 | if (val_chain) | |
826 | *val_chain = NULL; | |
827 | ||
828 | /* Evaluate the expression. */ | |
829 | mark = value_mark (); | |
830 | result = NULL; | |
ccc57cf9 PA |
831 | |
832 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
833 | { | |
834 | result = evaluate_expression (exp); | |
835 | } | |
836 | if (ex.reason < 0) | |
837 | { | |
838 | /* Ignore memory errors, we want watchpoints pointing at | |
839 | inaccessible memory to still be created; otherwise, throw the | |
840 | error to some higher catcher. */ | |
841 | switch (ex.error) | |
842 | { | |
843 | case MEMORY_ERROR: | |
844 | break; | |
845 | default: | |
846 | throw_exception (ex); | |
847 | break; | |
848 | } | |
849 | } | |
850 | ||
fa4727a6 DJ |
851 | new_mark = value_mark (); |
852 | if (mark == new_mark) | |
853 | return; | |
854 | if (resultp) | |
855 | *resultp = result; | |
856 | ||
857 | /* Make sure it's not lazy, so that after the target stops again we | |
858 | have a non-lazy previous value to compare with. */ | |
859 | if (result != NULL | |
860 | && (!value_lazy (result) || gdb_value_fetch_lazy (result))) | |
861 | *valp = result; | |
862 | ||
863 | if (val_chain) | |
864 | { | |
865 | /* Return the chain of intermediate values. We use this to | |
866 | decide which addresses to watch. */ | |
867 | *val_chain = new_mark; | |
868 | value_release_to_mark (mark); | |
869 | } | |
870 | } | |
871 | ||
567e1b4e JB |
872 | /* Assuming that B is a watchpoint: |
873 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 874 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
875 | - Evaluate the condition if there is one, and store the result |
876 | in b->loc->cond. | |
a5606eee VP |
877 | - Update the list of values that must be watched in B->loc. |
878 | ||
bfa149ac JB |
879 | If the watchpoint disposition is disp_del_at_next_stop, then do nothing. |
880 | If this is local watchpoint that is out of scope, delete it. */ | |
b40ce68a | 881 | static void |
a5606eee | 882 | update_watchpoint (struct breakpoint *b, int reparse) |
7270d8f2 | 883 | { |
a5606eee | 884 | int within_current_scope; |
a5606eee VP |
885 | struct frame_id saved_frame_id; |
886 | struct bp_location *loc; | |
887 | bpstat bs; | |
888 | ||
567e1b4e JB |
889 | /* We don't free locations. They are stored in bp_location_chain and |
890 | update_global_locations will eventually delete them and remove | |
891 | breakpoints if needed. */ | |
a5606eee VP |
892 | b->loc = NULL; |
893 | ||
894 | if (b->disposition == disp_del_at_next_stop) | |
895 | return; | |
896 | ||
897 | /* Save the current frame's ID so we can restore it after | |
898 | evaluating the watchpoint expression on its own frame. */ | |
899 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
900 | took a frame parameter, so that we didn't have to change the | |
901 | selected frame. */ | |
902 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
903 | ||
904 | /* Determine if the watchpoint is within scope. */ | |
905 | if (b->exp_valid_block == NULL) | |
906 | within_current_scope = 1; | |
907 | else | |
908 | { | |
909 | struct frame_info *fi; | |
910 | fi = frame_find_by_id (b->watchpoint_frame); | |
911 | within_current_scope = (fi != NULL); | |
912 | if (within_current_scope) | |
913 | select_frame (fi); | |
914 | } | |
915 | ||
916 | if (within_current_scope && reparse) | |
917 | { | |
918 | char *s; | |
919 | if (b->exp) | |
920 | { | |
921 | xfree (b->exp); | |
922 | b->exp = NULL; | |
923 | } | |
924 | s = b->exp_string; | |
925 | b->exp = parse_exp_1 (&s, b->exp_valid_block, 0); | |
926 | /* If the meaning of expression itself changed, the old value is | |
927 | no longer relevant. We don't want to report a watchpoint hit | |
928 | to the user when the old value and the new value may actually | |
929 | be completely different objects. */ | |
930 | value_free (b->val); | |
fa4727a6 DJ |
931 | b->val = NULL; |
932 | b->val_valid = 0; | |
a5606eee | 933 | } |
a5606eee VP |
934 | |
935 | /* If we failed to parse the expression, for example because | |
936 | it refers to a global variable in a not-yet-loaded shared library, | |
937 | don't try to insert watchpoint. We don't automatically delete | |
938 | such watchpoint, though, since failure to parse expression | |
939 | is different from out-of-scope watchpoint. */ | |
940 | if (within_current_scope && b->exp) | |
941 | { | |
fa4727a6 | 942 | struct value *val_chain, *v, *result, *next; |
a5606eee | 943 | |
fa4727a6 | 944 | fetch_watchpoint_value (b->exp, &v, &result, &val_chain); |
a5606eee | 945 | |
a5606eee VP |
946 | /* Avoid setting b->val if it's already set. The meaning of |
947 | b->val is 'the last value' user saw, and we should update | |
948 | it only if we reported that last value to user. As it | |
949 | happens, the code that reports it updates b->val directly. */ | |
fa4727a6 DJ |
950 | if (!b->val_valid) |
951 | { | |
952 | b->val = v; | |
953 | b->val_valid = 1; | |
954 | } | |
a5606eee | 955 | |
db2ad4c3 JK |
956 | /* Change the type of breakpoint between hardware assisted or an |
957 | ordinary watchpoint depending on the hardware support and free | |
958 | hardware slots. REPARSE is set when the inferior is started. */ | |
959 | if ((b->type == bp_watchpoint || b->type == bp_hardware_watchpoint) | |
960 | && reparse) | |
961 | { | |
ca2d49e8 | 962 | int i, mem_cnt, other_type_used; |
db2ad4c3 JK |
963 | |
964 | i = hw_watchpoint_used_count (bp_hardware_watchpoint, | |
965 | &other_type_used); | |
966 | mem_cnt = can_use_hardware_watchpoint (val_chain); | |
967 | ||
ca2d49e8 | 968 | if (!mem_cnt) |
db2ad4c3 JK |
969 | b->type = bp_watchpoint; |
970 | else | |
ca2d49e8 | 971 | { |
d92524f1 | 972 | int target_resources_ok = target_can_use_hardware_watchpoint |
ca2d49e8 SL |
973 | (bp_hardware_watchpoint, i + mem_cnt, other_type_used); |
974 | if (target_resources_ok <= 0) | |
975 | b->type = bp_watchpoint; | |
976 | else | |
977 | b->type = bp_hardware_watchpoint; | |
978 | } | |
db2ad4c3 JK |
979 | } |
980 | ||
a5606eee | 981 | /* Look at each value on the value chain. */ |
fa4727a6 | 982 | for (v = val_chain; v; v = next) |
a5606eee VP |
983 | { |
984 | /* If it's a memory location, and GDB actually needed | |
985 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
986 | must watch it. If the first value returned is |
987 | still lazy, that means an error occurred reading it; | |
988 | watch it anyway in case it becomes readable. */ | |
a5606eee | 989 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 990 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
991 | { |
992 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 993 | |
a5606eee VP |
994 | /* We only watch structs and arrays if user asked |
995 | for it explicitly, never if they just happen to | |
996 | appear in the middle of some value chain. */ | |
fa4727a6 | 997 | if (v == result |
a5606eee VP |
998 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
999 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1000 | { | |
1001 | CORE_ADDR addr; | |
1002 | int len, type; | |
1003 | struct bp_location *loc, **tmp; | |
1004 | ||
42ae5230 | 1005 | addr = value_address (v); |
a5606eee VP |
1006 | len = TYPE_LENGTH (value_type (v)); |
1007 | type = hw_write; | |
1008 | if (b->type == bp_read_watchpoint) | |
1009 | type = hw_read; | |
1010 | else if (b->type == bp_access_watchpoint) | |
1011 | type = hw_access; | |
1012 | ||
39d61571 | 1013 | loc = allocate_bp_location (b); |
a5606eee VP |
1014 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
1015 | ; | |
1016 | *tmp = loc; | |
a6d9a66e | 1017 | loc->gdbarch = get_type_arch (value_type (v)); |
a5606eee VP |
1018 | loc->address = addr; |
1019 | loc->length = len; | |
1020 | loc->watchpoint_type = type; | |
1021 | } | |
1022 | } | |
1023 | ||
1024 | next = value_next (v); | |
1025 | if (v != b->val) | |
1026 | value_free (v); | |
1027 | } | |
1028 | ||
2ec93238 MK |
1029 | /* We just regenerated the list of breakpoint locations. |
1030 | The new location does not have its condition field set to anything | |
1031 | and therefore, we must always reparse the cond_string, independently | |
1032 | of the value of the reparse flag. */ | |
1033 | if (b->cond_string != NULL) | |
a5606eee VP |
1034 | { |
1035 | char *s = b->cond_string; | |
a5606eee VP |
1036 | b->loc->cond = parse_exp_1 (&s, b->exp_valid_block, 0); |
1037 | } | |
1038 | } | |
1039 | else if (!within_current_scope) | |
7270d8f2 | 1040 | { |
a5606eee | 1041 | printf_filtered (_("\ |
567e1b4e | 1042 | Watchpoint %d deleted because the program has left the block \n\ |
a5606eee VP |
1043 | in which its expression is valid.\n"), |
1044 | b->number); | |
1045 | if (b->related_breakpoint) | |
1046 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1047 | b->disposition = disp_del_at_next_stop; | |
7270d8f2 | 1048 | } |
a5606eee VP |
1049 | |
1050 | /* Restore the selected frame. */ | |
1051 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1052 | } |
1053 | ||
a5606eee | 1054 | |
74960c60 VP |
1055 | /* Returns 1 iff breakpoint location should be |
1056 | inserted in the inferior. */ | |
1057 | static int | |
1058 | should_be_inserted (struct bp_location *bpt) | |
1059 | { | |
1060 | if (!breakpoint_enabled (bpt->owner)) | |
1061 | return 0; | |
1062 | ||
1063 | if (bpt->owner->disposition == disp_del_at_next_stop) | |
1064 | return 0; | |
1065 | ||
1066 | if (!bpt->enabled || bpt->shlib_disabled || bpt->duplicate) | |
1067 | return 0; | |
1068 | ||
1042e4c0 SS |
1069 | /* Tracepoints are inserted by the target at a time of its choosing, |
1070 | not by us. */ | |
1071 | if (bpt->owner->type == bp_tracepoint) | |
1072 | return 0; | |
1073 | ||
74960c60 VP |
1074 | return 1; |
1075 | } | |
1076 | ||
879bfdc2 DJ |
1077 | /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint. |
1078 | Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS, | |
fa3a767f | 1079 | and HW_BREAKPOINT_ERROR are used to report problems. |
879bfdc2 DJ |
1080 | |
1081 | NOTE drow/2003-09-09: This routine could be broken down to an object-style | |
1082 | method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 1083 | static int |
879bfdc2 | 1084 | insert_bp_location (struct bp_location *bpt, |
26bb91f3 | 1085 | struct ui_file *tmp_error_stream, |
fa3a767f | 1086 | int *disabled_breaks, |
26bb91f3 | 1087 | int *hw_breakpoint_error) |
879bfdc2 DJ |
1088 | { |
1089 | int val = 0; | |
1090 | ||
74960c60 | 1091 | if (!should_be_inserted (bpt) || bpt->inserted) |
879bfdc2 DJ |
1092 | return 0; |
1093 | ||
8181d85f DJ |
1094 | /* Initialize the target-specific information. */ |
1095 | memset (&bpt->target_info, 0, sizeof (bpt->target_info)); | |
1096 | bpt->target_info.placed_address = bpt->address; | |
1097 | ||
879bfdc2 DJ |
1098 | if (bpt->loc_type == bp_loc_software_breakpoint |
1099 | || bpt->loc_type == bp_loc_hardware_breakpoint) | |
1100 | { | |
765dc015 VP |
1101 | if (bpt->owner->type != bp_hardware_breakpoint) |
1102 | { | |
1103 | /* If the explicitly specified breakpoint type | |
1104 | is not hardware breakpoint, check the memory map to see | |
1105 | if the breakpoint address is in read only memory or not. | |
1106 | Two important cases are: | |
1107 | - location type is not hardware breakpoint, memory | |
1108 | is readonly. We change the type of the location to | |
1109 | hardware breakpoint. | |
1110 | - location type is hardware breakpoint, memory is read-write. | |
1111 | This means we've previously made the location hardware one, but | |
1112 | then the memory map changed, so we undo. | |
1113 | ||
1114 | When breakpoints are removed, remove_breakpoints will | |
1115 | use location types we've just set here, the only possible | |
1116 | problem is that memory map has changed during running program, | |
1117 | but it's not going to work anyway with current gdb. */ | |
1118 | struct mem_region *mr | |
1119 | = lookup_mem_region (bpt->target_info.placed_address); | |
1120 | ||
1121 | if (mr) | |
1122 | { | |
1123 | if (automatic_hardware_breakpoints) | |
1124 | { | |
1125 | int changed = 0; | |
1126 | enum bp_loc_type new_type; | |
1127 | ||
1128 | if (mr->attrib.mode != MEM_RW) | |
1129 | new_type = bp_loc_hardware_breakpoint; | |
1130 | else | |
1131 | new_type = bp_loc_software_breakpoint; | |
1132 | ||
1133 | if (new_type != bpt->loc_type) | |
1134 | { | |
1135 | static int said = 0; | |
1136 | bpt->loc_type = new_type; | |
1137 | if (!said) | |
1138 | { | |
1139 | fprintf_filtered (gdb_stdout, _("\ | |
0767c96d | 1140 | Note: automatically using hardware breakpoints for read-only addresses.\n")); |
765dc015 VP |
1141 | said = 1; |
1142 | } | |
1143 | } | |
1144 | } | |
1145 | else if (bpt->loc_type == bp_loc_software_breakpoint | |
1146 | && mr->attrib.mode != MEM_RW) | |
1147 | warning (_("cannot set software breakpoint at readonly address %s"), | |
5af949e3 | 1148 | paddress (bpt->gdbarch, bpt->address)); |
765dc015 VP |
1149 | } |
1150 | } | |
1151 | ||
879bfdc2 DJ |
1152 | /* First check to see if we have to handle an overlay. */ |
1153 | if (overlay_debugging == ovly_off | |
1154 | || bpt->section == NULL | |
1155 | || !(section_is_overlay (bpt->section))) | |
1156 | { | |
1157 | /* No overlay handling: just set the breakpoint. */ | |
1158 | ||
1159 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
a6d9a66e UW |
1160 | val = target_insert_hw_breakpoint (bpt->gdbarch, |
1161 | &bpt->target_info); | |
879bfdc2 | 1162 | else |
a6d9a66e UW |
1163 | val = target_insert_breakpoint (bpt->gdbarch, |
1164 | &bpt->target_info); | |
879bfdc2 DJ |
1165 | } |
1166 | else | |
1167 | { | |
1168 | /* This breakpoint is in an overlay section. | |
1169 | Shall we set a breakpoint at the LMA? */ | |
1170 | if (!overlay_events_enabled) | |
1171 | { | |
1172 | /* Yes -- overlay event support is not active, | |
1173 | so we must try to set a breakpoint at the LMA. | |
1174 | This will not work for a hardware breakpoint. */ | |
1175 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8a3fe4f8 | 1176 | warning (_("hardware breakpoint %d not supported in overlay!"), |
879bfdc2 DJ |
1177 | bpt->owner->number); |
1178 | else | |
1179 | { | |
1180 | CORE_ADDR addr = overlay_unmapped_address (bpt->address, | |
1181 | bpt->section); | |
1182 | /* Set a software (trap) breakpoint at the LMA. */ | |
8181d85f DJ |
1183 | bpt->overlay_target_info = bpt->target_info; |
1184 | bpt->overlay_target_info.placed_address = addr; | |
a6d9a66e UW |
1185 | val = target_insert_breakpoint (bpt->gdbarch, |
1186 | &bpt->overlay_target_info); | |
879bfdc2 | 1187 | if (val != 0) |
99361f52 DE |
1188 | fprintf_unfiltered (tmp_error_stream, |
1189 | "Overlay breakpoint %d failed: in ROM?\n", | |
879bfdc2 DJ |
1190 | bpt->owner->number); |
1191 | } | |
1192 | } | |
1193 | /* Shall we set a breakpoint at the VMA? */ | |
1194 | if (section_is_mapped (bpt->section)) | |
1195 | { | |
1196 | /* Yes. This overlay section is mapped into memory. */ | |
1197 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
a6d9a66e UW |
1198 | val = target_insert_hw_breakpoint (bpt->gdbarch, |
1199 | &bpt->target_info); | |
879bfdc2 | 1200 | else |
a6d9a66e UW |
1201 | val = target_insert_breakpoint (bpt->gdbarch, |
1202 | &bpt->target_info); | |
879bfdc2 DJ |
1203 | } |
1204 | else | |
1205 | { | |
1206 | /* No. This breakpoint will not be inserted. | |
1207 | No error, but do not mark the bp as 'inserted'. */ | |
1208 | return 0; | |
1209 | } | |
1210 | } | |
1211 | ||
1212 | if (val) | |
1213 | { | |
1214 | /* Can't set the breakpoint. */ | |
f5c9a895 | 1215 | if (solib_name_from_address (bpt->address)) |
879bfdc2 DJ |
1216 | { |
1217 | /* See also: disable_breakpoints_in_shlibs. */ | |
1218 | val = 0; | |
0d381245 | 1219 | bpt->shlib_disabled = 1; |
879bfdc2 DJ |
1220 | if (!*disabled_breaks) |
1221 | { | |
1222 | fprintf_unfiltered (tmp_error_stream, | |
1223 | "Cannot insert breakpoint %d.\n", | |
1224 | bpt->owner->number); | |
1225 | fprintf_unfiltered (tmp_error_stream, | |
1226 | "Temporarily disabling shared library breakpoints:\n"); | |
1227 | } | |
1228 | *disabled_breaks = 1; | |
1229 | fprintf_unfiltered (tmp_error_stream, | |
1230 | "breakpoint #%d\n", bpt->owner->number); | |
1231 | } | |
1232 | else | |
879bfdc2 | 1233 | { |
879bfdc2 DJ |
1234 | if (bpt->loc_type == bp_loc_hardware_breakpoint) |
1235 | { | |
1236 | *hw_breakpoint_error = 1; | |
1237 | fprintf_unfiltered (tmp_error_stream, | |
1238 | "Cannot insert hardware breakpoint %d.\n", | |
1239 | bpt->owner->number); | |
1240 | } | |
1241 | else | |
1242 | { | |
1243 | fprintf_unfiltered (tmp_error_stream, | |
1244 | "Cannot insert breakpoint %d.\n", | |
1245 | bpt->owner->number); | |
1246 | fprintf_filtered (tmp_error_stream, | |
1247 | "Error accessing memory address "); | |
5af949e3 UW |
1248 | fputs_filtered (paddress (bpt->gdbarch, bpt->address), |
1249 | tmp_error_stream); | |
879bfdc2 DJ |
1250 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1251 | safe_strerror (val)); | |
1252 | } | |
1253 | ||
1254 | } | |
1255 | } | |
1256 | else | |
1257 | bpt->inserted = 1; | |
1258 | ||
1259 | return val; | |
1260 | } | |
1261 | ||
1262 | else if (bpt->loc_type == bp_loc_hardware_watchpoint | |
1263 | /* NOTE drow/2003-09-08: This state only exists for removing | |
1264 | watchpoints. It's not clear that it's necessary... */ | |
1265 | && bpt->owner->disposition != disp_del_at_next_stop) | |
1266 | { | |
a5606eee VP |
1267 | val = target_insert_watchpoint (bpt->address, |
1268 | bpt->length, | |
1269 | bpt->watchpoint_type); | |
1270 | bpt->inserted = (val != -1); | |
879bfdc2 DJ |
1271 | } |
1272 | ||
fe798b75 | 1273 | else if (bpt->owner->type == bp_catchpoint) |
879bfdc2 | 1274 | { |
71fff37b AC |
1275 | struct gdb_exception e = catch_exception (uiout, insert_catchpoint, |
1276 | bpt->owner, RETURN_MASK_ERROR); | |
9cbc821d AC |
1277 | exception_fprintf (gdb_stderr, e, "warning: inserting catchpoint %d: ", |
1278 | bpt->owner->number); | |
1279 | if (e.reason < 0) | |
879bfdc2 DJ |
1280 | bpt->owner->enable_state = bp_disabled; |
1281 | else | |
1282 | bpt->inserted = 1; | |
1640b821 DJ |
1283 | |
1284 | /* We've already printed an error message if there was a problem | |
1285 | inserting this catchpoint, and we've disabled the catchpoint, | |
1286 | so just return success. */ | |
1287 | return 0; | |
879bfdc2 DJ |
1288 | } |
1289 | ||
1290 | return 0; | |
1291 | } | |
1292 | ||
74960c60 VP |
1293 | /* Make sure all breakpoints are inserted in inferior. |
1294 | Throws exception on any error. | |
1295 | A breakpoint that is already inserted won't be inserted | |
1296 | again, so calling this function twice is safe. */ | |
1297 | void | |
1298 | insert_breakpoints (void) | |
1299 | { | |
1300 | struct breakpoint *bpt; | |
1301 | ||
1302 | ALL_BREAKPOINTS (bpt) | |
1303 | if (is_hardware_watchpoint (bpt)) | |
1304 | update_watchpoint (bpt, 0 /* don't reparse. */); | |
1305 | ||
b60e7edf | 1306 | update_global_location_list (1); |
74960c60 | 1307 | |
c35b1492 PA |
1308 | /* update_global_location_list does not insert breakpoints when |
1309 | always_inserted_mode is not enabled. Explicitly insert them | |
1310 | now. */ | |
1311 | if (!breakpoints_always_inserted_mode ()) | |
74960c60 VP |
1312 | insert_breakpoint_locations (); |
1313 | } | |
1314 | ||
c906108c SS |
1315 | /* insert_breakpoints is used when starting or continuing the program. |
1316 | remove_breakpoints is used when the program stops. | |
1317 | Both return zero if successful, | |
1318 | or an `errno' value if could not write the inferior. */ | |
1319 | ||
74960c60 VP |
1320 | static void |
1321 | insert_breakpoint_locations (void) | |
c906108c | 1322 | { |
a5606eee | 1323 | struct breakpoint *bpt; |
879bfdc2 | 1324 | struct bp_location *b, *temp; |
e236ba44 | 1325 | int error = 0; |
c906108c SS |
1326 | int val = 0; |
1327 | int disabled_breaks = 0; | |
81d0cc19 | 1328 | int hw_breakpoint_error = 0; |
c906108c | 1329 | |
81d0cc19 | 1330 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 1331 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 1332 | |
81d0cc19 GS |
1333 | /* Explicitly mark the warning -- this will only be printed if |
1334 | there was an error. */ | |
1335 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
a5606eee | 1336 | |
879bfdc2 DJ |
1337 | ALL_BP_LOCATIONS_SAFE (b, temp) |
1338 | { | |
74960c60 | 1339 | if (!should_be_inserted (b) || b->inserted) |
879bfdc2 DJ |
1340 | continue; |
1341 | ||
f365de73 AS |
1342 | /* There is no point inserting thread-specific breakpoints if the |
1343 | thread no longer exists. */ | |
1344 | if (b->owner->thread != -1 | |
1345 | && !valid_thread_id (b->owner->thread)) | |
1346 | continue; | |
1347 | ||
879bfdc2 | 1348 | val = insert_bp_location (b, tmp_error_stream, |
fa3a767f | 1349 | &disabled_breaks, |
879bfdc2 DJ |
1350 | &hw_breakpoint_error); |
1351 | if (val) | |
e236ba44 | 1352 | error = val; |
879bfdc2 | 1353 | } |
c906108c | 1354 | |
a5606eee VP |
1355 | /* If we failed to insert all locations of a watchpoint, |
1356 | remove them, as half-inserted watchpoint is of limited use. */ | |
1357 | ALL_BREAKPOINTS (bpt) | |
1358 | { | |
1359 | int some_failed = 0; | |
1360 | struct bp_location *loc; | |
1361 | ||
1362 | if (!is_hardware_watchpoint (bpt)) | |
1363 | continue; | |
1364 | ||
d6b74ac4 | 1365 | if (!breakpoint_enabled (bpt)) |
a5606eee | 1366 | continue; |
74960c60 VP |
1367 | |
1368 | if (bpt->disposition == disp_del_at_next_stop) | |
1369 | continue; | |
a5606eee VP |
1370 | |
1371 | for (loc = bpt->loc; loc; loc = loc->next) | |
1372 | if (!loc->inserted) | |
1373 | { | |
1374 | some_failed = 1; | |
1375 | break; | |
1376 | } | |
1377 | if (some_failed) | |
1378 | { | |
1379 | for (loc = bpt->loc; loc; loc = loc->next) | |
1380 | if (loc->inserted) | |
1381 | remove_breakpoint (loc, mark_uninserted); | |
1382 | ||
1383 | hw_breakpoint_error = 1; | |
1384 | fprintf_unfiltered (tmp_error_stream, | |
1385 | "Could not insert hardware watchpoint %d.\n", | |
1386 | bpt->number); | |
1387 | error = -1; | |
1388 | } | |
1389 | } | |
1390 | ||
e236ba44 | 1391 | if (error) |
81d0cc19 GS |
1392 | { |
1393 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1394 | message about possibly exhausted resources. */ | |
879bfdc2 | 1395 | if (hw_breakpoint_error) |
81d0cc19 | 1396 | { |
c6510018 MS |
1397 | fprintf_unfiltered (tmp_error_stream, |
1398 | "Could not insert hardware breakpoints:\n\ | |
1399 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1400 | } |
81d0cc19 GS |
1401 | target_terminal_ours_for_output (); |
1402 | error_stream (tmp_error_stream); | |
1403 | } | |
f7545552 TT |
1404 | |
1405 | do_cleanups (cleanups); | |
c906108c SS |
1406 | } |
1407 | ||
c906108c | 1408 | int |
fba45db2 | 1409 | remove_breakpoints (void) |
c906108c | 1410 | { |
0bde7532 | 1411 | struct bp_location *b; |
c906108c SS |
1412 | int val; |
1413 | ||
0bde7532 | 1414 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1415 | { |
0bde7532 | 1416 | if (b->inserted) |
c5aa993b JM |
1417 | { |
1418 | val = remove_breakpoint (b, mark_uninserted); | |
1419 | if (val != 0) | |
1420 | return val; | |
1421 | } | |
1422 | } | |
c906108c SS |
1423 | return 0; |
1424 | } | |
1425 | ||
692590c1 | 1426 | int |
80ce1ecb | 1427 | remove_hw_watchpoints (void) |
692590c1 | 1428 | { |
0bde7532 | 1429 | struct bp_location *b; |
692590c1 MS |
1430 | int val; |
1431 | ||
0bde7532 | 1432 | ALL_BP_LOCATIONS (b) |
692590c1 | 1433 | { |
0bde7532 | 1434 | if (b->inserted && b->loc_type == bp_loc_hardware_watchpoint) |
692590c1 MS |
1435 | { |
1436 | val = remove_breakpoint (b, mark_uninserted); | |
1437 | if (val != 0) | |
1438 | return val; | |
1439 | } | |
1440 | } | |
1441 | return 0; | |
1442 | } | |
1443 | ||
c906108c | 1444 | int |
fba45db2 | 1445 | reattach_breakpoints (int pid) |
c906108c | 1446 | { |
0bde7532 | 1447 | struct bp_location *b; |
c906108c | 1448 | int val; |
ce696e05 | 1449 | struct cleanup *old_chain = save_inferior_ptid (); |
a4954f26 | 1450 | struct ui_file *tmp_error_stream = mem_fileopen (); |
fa3a767f | 1451 | int dummy1 = 0, dummy2 = 0; |
a4954f26 DJ |
1452 | |
1453 | make_cleanup_ui_file_delete (tmp_error_stream); | |
c906108c | 1454 | |
ce696e05 | 1455 | inferior_ptid = pid_to_ptid (pid); |
0bde7532 | 1456 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1457 | { |
0bde7532 | 1458 | if (b->inserted) |
c5aa993b | 1459 | { |
a4954f26 DJ |
1460 | b->inserted = 0; |
1461 | val = insert_bp_location (b, tmp_error_stream, | |
fa3a767f | 1462 | &dummy1, &dummy2); |
c5aa993b JM |
1463 | if (val != 0) |
1464 | { | |
ce696e05 | 1465 | do_cleanups (old_chain); |
c5aa993b JM |
1466 | return val; |
1467 | } | |
1468 | } | |
1469 | } | |
ce696e05 | 1470 | do_cleanups (old_chain); |
c906108c SS |
1471 | return 0; |
1472 | } | |
1473 | ||
e58b0e63 PA |
1474 | static int internal_breakpoint_number = -1; |
1475 | ||
e62c965a | 1476 | static struct breakpoint * |
a6d9a66e UW |
1477 | create_internal_breakpoint (struct gdbarch *gdbarch, |
1478 | CORE_ADDR address, enum bptype type) | |
e62c965a | 1479 | { |
e62c965a PP |
1480 | struct symtab_and_line sal; |
1481 | struct breakpoint *b; | |
1482 | ||
1483 | init_sal (&sal); /* initialize to zeroes */ | |
1484 | ||
1485 | sal.pc = address; | |
1486 | sal.section = find_pc_overlay (sal.pc); | |
1487 | ||
a6d9a66e | 1488 | b = set_raw_breakpoint (gdbarch, sal, type); |
e62c965a PP |
1489 | b->number = internal_breakpoint_number--; |
1490 | b->disposition = disp_donttouch; | |
1491 | ||
1492 | return b; | |
1493 | } | |
1494 | ||
1495 | static void | |
69de3c6a | 1496 | create_overlay_event_breakpoint (char *func_name) |
e62c965a | 1497 | { |
69de3c6a | 1498 | struct objfile *objfile; |
e62c965a | 1499 | |
69de3c6a PP |
1500 | ALL_OBJFILES (objfile) |
1501 | { | |
1502 | struct breakpoint *b; | |
1503 | struct minimal_symbol *m; | |
1504 | ||
1505 | m = lookup_minimal_symbol_text (func_name, objfile); | |
1506 | if (m == NULL) | |
1507 | continue; | |
e62c965a | 1508 | |
a6d9a66e UW |
1509 | b = create_internal_breakpoint (get_objfile_arch (objfile), |
1510 | SYMBOL_VALUE_ADDRESS (m), | |
69de3c6a PP |
1511 | bp_overlay_event); |
1512 | b->addr_string = xstrdup (func_name); | |
e62c965a | 1513 | |
69de3c6a PP |
1514 | if (overlay_debugging == ovly_auto) |
1515 | { | |
1516 | b->enable_state = bp_enabled; | |
1517 | overlay_events_enabled = 1; | |
1518 | } | |
1519 | else | |
1520 | { | |
1521 | b->enable_state = bp_disabled; | |
1522 | overlay_events_enabled = 0; | |
1523 | } | |
e62c965a PP |
1524 | } |
1525 | update_global_location_list (1); | |
1526 | } | |
1527 | ||
0fd8e87f UW |
1528 | static void |
1529 | create_longjmp_master_breakpoint (char *func_name) | |
1530 | { | |
1531 | struct objfile *objfile; | |
1532 | ||
1533 | ALL_OBJFILES (objfile) | |
1534 | { | |
1535 | struct breakpoint *b; | |
1536 | struct minimal_symbol *m; | |
1537 | ||
1538 | if (!gdbarch_get_longjmp_target_p (get_objfile_arch (objfile))) | |
1539 | continue; | |
1540 | ||
1541 | m = lookup_minimal_symbol_text (func_name, objfile); | |
1542 | if (m == NULL) | |
1543 | continue; | |
1544 | ||
a6d9a66e UW |
1545 | b = create_internal_breakpoint (get_objfile_arch (objfile), |
1546 | SYMBOL_VALUE_ADDRESS (m), | |
0fd8e87f UW |
1547 | bp_longjmp_master); |
1548 | b->addr_string = xstrdup (func_name); | |
1549 | b->enable_state = bp_disabled; | |
1550 | } | |
1551 | update_global_location_list (1); | |
1552 | } | |
1553 | ||
c906108c | 1554 | void |
fba45db2 | 1555 | update_breakpoints_after_exec (void) |
c906108c | 1556 | { |
c5aa993b JM |
1557 | struct breakpoint *b; |
1558 | struct breakpoint *temp; | |
25b22b0a | 1559 | struct bp_location *bploc; |
c906108c | 1560 | |
25b22b0a PA |
1561 | /* We're about to delete breakpoints from GDB's lists. If the |
1562 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
1563 | writing the breakpoints' "shadow contents" back into memory. The | |
1564 | "shadow contents" are NOT valid after an exec, so GDB should not | |
1565 | do that. Instead, the target is responsible from marking | |
1566 | breakpoints out as soon as it detects an exec. We don't do that | |
1567 | here instead, because there may be other attempts to delete | |
1568 | breakpoints after detecting an exec and before reaching here. */ | |
1569 | ALL_BP_LOCATIONS (bploc) | |
1570 | gdb_assert (!bploc->inserted); | |
c906108c SS |
1571 | |
1572 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1573 | { |
1574 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
1575 | if (b->type == bp_shlib_event) | |
1576 | { | |
1577 | delete_breakpoint (b); | |
1578 | continue; | |
1579 | } | |
c906108c | 1580 | |
1900040c | 1581 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
1582 | as must overlay event and longjmp master breakpoints. */ |
1583 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
1584 | || b->type == bp_longjmp_master) | |
c4093a6a JM |
1585 | { |
1586 | delete_breakpoint (b); | |
1587 | continue; | |
1588 | } | |
1589 | ||
c5aa993b JM |
1590 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1591 | if (b->type == bp_step_resume) | |
1592 | { | |
1593 | delete_breakpoint (b); | |
1594 | continue; | |
1595 | } | |
1596 | ||
611c83ae PA |
1597 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
1598 | after an exec. */ | |
1599 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume) | |
1600 | { | |
1601 | delete_breakpoint (b); | |
1602 | continue; | |
1603 | } | |
1604 | ||
ce78b96d JB |
1605 | if (b->type == bp_catchpoint) |
1606 | { | |
1607 | /* For now, none of the bp_catchpoint breakpoints need to | |
1608 | do anything at this point. In the future, if some of | |
1609 | the catchpoints need to something, we will need to add | |
1610 | a new method, and call this method from here. */ | |
1611 | continue; | |
1612 | } | |
1613 | ||
c5aa993b JM |
1614 | /* bp_finish is a special case. The only way we ought to be able |
1615 | to see one of these when an exec() has happened, is if the user | |
1616 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1617 | carries them to the call-site of the current callee, by setting | |
1618 | a temporary bp there and resuming. But in this case, the finish | |
1619 | will carry them entirely through the vfork & exec. | |
1620 | ||
1621 | We don't want to allow a bp_finish to remain inserted now. But | |
1622 | we can't safely delete it, 'cause finish_command has a handle to | |
1623 | the bp on a bpstat, and will later want to delete it. There's a | |
1624 | chance (and I've seen it happen) that if we delete the bp_finish | |
1625 | here, that its storage will get reused by the time finish_command | |
1626 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1627 | We really must allow finish_command to delete a bp_finish. | |
1628 | ||
53a5351d JM |
1629 | In the absense of a general solution for the "how do we know |
1630 | it's safe to delete something others may have handles to?" | |
1631 | problem, what we'll do here is just uninsert the bp_finish, and | |
1632 | let finish_command delete it. | |
1633 | ||
1634 | (We know the bp_finish is "doomed" in the sense that it's | |
1635 | momentary, and will be deleted as soon as finish_command sees | |
1636 | the inferior stopped. So it doesn't matter that the bp's | |
1637 | address is probably bogus in the new a.out, unlike e.g., the | |
1638 | solib breakpoints.) */ | |
c5aa993b | 1639 | |
c5aa993b JM |
1640 | if (b->type == bp_finish) |
1641 | { | |
1642 | continue; | |
1643 | } | |
1644 | ||
1645 | /* Without a symbolic address, we have little hope of the | |
1646 | pre-exec() address meaning the same thing in the post-exec() | |
1647 | a.out. */ | |
1648 | if (b->addr_string == NULL) | |
1649 | { | |
1650 | delete_breakpoint (b); | |
1651 | continue; | |
1652 | } | |
c5aa993b | 1653 | } |
1900040c | 1654 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
69de3c6a | 1655 | create_overlay_event_breakpoint ("_ovly_debug_event"); |
0fd8e87f UW |
1656 | create_longjmp_master_breakpoint ("longjmp"); |
1657 | create_longjmp_master_breakpoint ("_longjmp"); | |
1658 | create_longjmp_master_breakpoint ("siglongjmp"); | |
1659 | create_longjmp_master_breakpoint ("_siglongjmp"); | |
c906108c SS |
1660 | } |
1661 | ||
1662 | int | |
fba45db2 | 1663 | detach_breakpoints (int pid) |
c906108c | 1664 | { |
0bde7532 | 1665 | struct bp_location *b; |
c906108c | 1666 | int val; |
ce696e05 | 1667 | struct cleanup *old_chain = save_inferior_ptid (); |
c5aa993b | 1668 | |
39f77062 | 1669 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 1670 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 1671 | |
ce696e05 KB |
1672 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1673 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1674 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1675 | { |
0bde7532 | 1676 | if (b->inserted) |
c5aa993b JM |
1677 | { |
1678 | val = remove_breakpoint (b, mark_inserted); | |
1679 | if (val != 0) | |
1680 | { | |
ce696e05 | 1681 | do_cleanups (old_chain); |
c5aa993b JM |
1682 | return val; |
1683 | } | |
1684 | } | |
1685 | } | |
ce696e05 | 1686 | do_cleanups (old_chain); |
c906108c SS |
1687 | return 0; |
1688 | } | |
1689 | ||
1690 | static int | |
0bde7532 | 1691 | remove_breakpoint (struct bp_location *b, insertion_state_t is) |
c906108c SS |
1692 | { |
1693 | int val; | |
c5aa993b | 1694 | |
0bde7532 | 1695 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
1696 | /* Permanent breakpoints cannot be inserted or removed. */ |
1697 | return 0; | |
1698 | ||
74960c60 VP |
1699 | /* The type of none suggests that owner is actually deleted. |
1700 | This should not ever happen. */ | |
1701 | gdb_assert (b->owner->type != bp_none); | |
0bde7532 DJ |
1702 | |
1703 | if (b->loc_type == bp_loc_software_breakpoint | |
1704 | || b->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 1705 | { |
c02f5703 MS |
1706 | /* "Normal" instruction breakpoint: either the standard |
1707 | trap-instruction bp (bp_breakpoint), or a | |
1708 | bp_hardware_breakpoint. */ | |
1709 | ||
1710 | /* First check to see if we have to handle an overlay. */ | |
1711 | if (overlay_debugging == ovly_off | |
0bde7532 DJ |
1712 | || b->section == NULL |
1713 | || !(section_is_overlay (b->section))) | |
c02f5703 MS |
1714 | { |
1715 | /* No overlay handling: just remove the breakpoint. */ | |
1716 | ||
0bde7532 | 1717 | if (b->loc_type == bp_loc_hardware_breakpoint) |
a6d9a66e | 1718 | val = target_remove_hw_breakpoint (b->gdbarch, &b->target_info); |
c02f5703 | 1719 | else |
a6d9a66e | 1720 | val = target_remove_breakpoint (b->gdbarch, &b->target_info); |
c02f5703 | 1721 | } |
c906108c SS |
1722 | else |
1723 | { | |
c02f5703 MS |
1724 | /* This breakpoint is in an overlay section. |
1725 | Did we set a breakpoint at the LMA? */ | |
1726 | if (!overlay_events_enabled) | |
1727 | { | |
1728 | /* Yes -- overlay event support is not active, so we | |
1729 | should have set a breakpoint at the LMA. Remove it. | |
1730 | */ | |
c02f5703 MS |
1731 | /* Ignore any failures: if the LMA is in ROM, we will |
1732 | have already warned when we failed to insert it. */ | |
0bde7532 | 1733 | if (b->loc_type == bp_loc_hardware_breakpoint) |
a6d9a66e UW |
1734 | target_remove_hw_breakpoint (b->gdbarch, |
1735 | &b->overlay_target_info); | |
c02f5703 | 1736 | else |
a6d9a66e UW |
1737 | target_remove_breakpoint (b->gdbarch, |
1738 | &b->overlay_target_info); | |
c02f5703 MS |
1739 | } |
1740 | /* Did we set a breakpoint at the VMA? | |
1741 | If so, we will have marked the breakpoint 'inserted'. */ | |
0bde7532 | 1742 | if (b->inserted) |
c906108c | 1743 | { |
c02f5703 MS |
1744 | /* Yes -- remove it. Previously we did not bother to |
1745 | remove the breakpoint if the section had been | |
1746 | unmapped, but let's not rely on that being safe. We | |
1747 | don't know what the overlay manager might do. */ | |
0bde7532 | 1748 | if (b->loc_type == bp_loc_hardware_breakpoint) |
a6d9a66e UW |
1749 | val = target_remove_hw_breakpoint (b->gdbarch, |
1750 | &b->target_info); | |
aa67235e UW |
1751 | |
1752 | /* However, we should remove *software* breakpoints only | |
1753 | if the section is still mapped, or else we overwrite | |
1754 | wrong code with the saved shadow contents. */ | |
1755 | else if (section_is_mapped (b->section)) | |
a6d9a66e UW |
1756 | val = target_remove_breakpoint (b->gdbarch, |
1757 | &b->target_info); | |
aa67235e UW |
1758 | else |
1759 | val = 0; | |
c906108c | 1760 | } |
c02f5703 MS |
1761 | else |
1762 | { | |
1763 | /* No -- not inserted, so no need to remove. No error. */ | |
1764 | val = 0; | |
1765 | } | |
c906108c | 1766 | } |
879d1e6b UW |
1767 | |
1768 | /* In some cases, we might not be able to remove a breakpoint | |
1769 | in a shared library that has already been removed, but we | |
1770 | have not yet processed the shlib unload event. */ | |
f5c9a895 | 1771 | if (val && solib_name_from_address (b->address)) |
879d1e6b UW |
1772 | val = 0; |
1773 | ||
c906108c SS |
1774 | if (val) |
1775 | return val; | |
0bde7532 | 1776 | b->inserted = (is == mark_inserted); |
c906108c | 1777 | } |
a5606eee | 1778 | else if (b->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 1779 | { |
278cd55f AC |
1780 | struct value *v; |
1781 | struct value *n; | |
c5aa993b | 1782 | |
0bde7532 | 1783 | b->inserted = (is == mark_inserted); |
a5606eee VP |
1784 | val = target_remove_watchpoint (b->address, b->length, |
1785 | b->watchpoint_type); | |
2e70b7b9 | 1786 | |
c906108c | 1787 | /* Failure to remove any of the hardware watchpoints comes here. */ |
0bde7532 | 1788 | if ((is == mark_uninserted) && (b->inserted)) |
8a3fe4f8 | 1789 | warning (_("Could not remove hardware watchpoint %d."), |
0bde7532 | 1790 | b->owner->number); |
c906108c | 1791 | } |
ce78b96d JB |
1792 | else if (b->owner->type == bp_catchpoint |
1793 | && breakpoint_enabled (b->owner) | |
1794 | && !b->duplicate) | |
1795 | { | |
1796 | gdb_assert (b->owner->ops != NULL && b->owner->ops->remove != NULL); | |
1797 | ||
1798 | val = b->owner->ops->remove (b->owner); | |
1799 | if (val) | |
1800 | return val; | |
1801 | b->inserted = (is == mark_inserted); | |
1802 | } | |
c906108c SS |
1803 | |
1804 | return 0; | |
1805 | } | |
1806 | ||
1807 | /* Clear the "inserted" flag in all breakpoints. */ | |
1808 | ||
25b22b0a | 1809 | void |
fba45db2 | 1810 | mark_breakpoints_out (void) |
c906108c | 1811 | { |
075f6582 | 1812 | struct bp_location *bpt; |
c906108c | 1813 | |
075f6582 DJ |
1814 | ALL_BP_LOCATIONS (bpt) |
1815 | bpt->inserted = 0; | |
c906108c SS |
1816 | } |
1817 | ||
53a5351d JM |
1818 | /* Clear the "inserted" flag in all breakpoints and delete any |
1819 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1820 | |
1821 | Plus other such housekeeping that has to be done for breakpoints | |
1822 | between runs. | |
1823 | ||
53a5351d JM |
1824 | Note: this function gets called at the end of a run (by |
1825 | generic_mourn_inferior) and when a run begins (by | |
1826 | init_wait_for_inferior). */ | |
c906108c SS |
1827 | |
1828 | ||
1829 | ||
1830 | void | |
fba45db2 | 1831 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 1832 | { |
52f0bd74 | 1833 | struct breakpoint *b, *temp; |
075f6582 | 1834 | struct bp_location *bpt; |
1c5cfe86 | 1835 | int ix; |
c906108c | 1836 | |
50c71eaf PA |
1837 | /* If breakpoint locations are shared across processes, then there's |
1838 | nothing to do. */ | |
2567c7d9 | 1839 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
1840 | return; |
1841 | ||
075f6582 | 1842 | ALL_BP_LOCATIONS (bpt) |
514f746b AR |
1843 | if (bpt->owner->enable_state != bp_permanent) |
1844 | bpt->inserted = 0; | |
075f6582 | 1845 | |
c906108c | 1846 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 1847 | { |
c5aa993b JM |
1848 | switch (b->type) |
1849 | { | |
1850 | case bp_call_dummy: | |
1851 | case bp_watchpoint_scope: | |
c906108c | 1852 | |
c5aa993b JM |
1853 | /* If the call dummy breakpoint is at the entry point it will |
1854 | cause problems when the inferior is rerun, so we better | |
1855 | get rid of it. | |
c906108c | 1856 | |
c5aa993b JM |
1857 | Also get rid of scope breakpoints. */ |
1858 | delete_breakpoint (b); | |
1859 | break; | |
c906108c | 1860 | |
c5aa993b JM |
1861 | case bp_watchpoint: |
1862 | case bp_hardware_watchpoint: | |
1863 | case bp_read_watchpoint: | |
1864 | case bp_access_watchpoint: | |
c906108c | 1865 | |
c5aa993b JM |
1866 | /* Likewise for watchpoints on local expressions. */ |
1867 | if (b->exp_valid_block != NULL) | |
1868 | delete_breakpoint (b); | |
967af18d | 1869 | else if (context == inf_starting) |
c860120c PM |
1870 | { |
1871 | /* Reset val field to force reread of starting value | |
1872 | in insert_breakpoints. */ | |
1873 | if (b->val) | |
1874 | value_free (b->val); | |
1875 | b->val = NULL; | |
fa4727a6 | 1876 | b->val_valid = 0; |
c860120c | 1877 | } |
c5aa993b JM |
1878 | break; |
1879 | default: | |
c5aa993b JM |
1880 | break; |
1881 | } | |
1882 | } | |
1c5cfe86 PA |
1883 | |
1884 | /* Get rid of the moribund locations. */ | |
1885 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bpt); ++ix) | |
1886 | free_bp_location (bpt); | |
1887 | VEC_free (bp_location_p, moribund_locations); | |
c906108c SS |
1888 | } |
1889 | ||
c2c6d25f JM |
1890 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1891 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1892 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1893 | permanent breakpoint. | |
1894 | - When continuing from a location with an ordinary breakpoint, we | |
1895 | actually single step once before calling insert_breakpoints. | |
1896 | - When continuing from a localion with a permanent breakpoint, we | |
1897 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1898 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1899 | |
c2c6d25f | 1900 | enum breakpoint_here |
fba45db2 | 1901 | breakpoint_here_p (CORE_ADDR pc) |
c906108c | 1902 | { |
89f9893c | 1903 | const struct bp_location *bpt; |
c2c6d25f | 1904 | int any_breakpoint_here = 0; |
c906108c | 1905 | |
075f6582 DJ |
1906 | ALL_BP_LOCATIONS (bpt) |
1907 | { | |
1908 | if (bpt->loc_type != bp_loc_software_breakpoint | |
1909 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1910 | continue; | |
1911 | ||
468d015d | 1912 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1913 | || bpt->owner->enable_state == bp_permanent) |
1914 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1915 | { | |
1916 | if (overlay_debugging | |
1917 | && section_is_overlay (bpt->section) | |
1918 | && !section_is_mapped (bpt->section)) | |
1919 | continue; /* unmapped overlay -- can't be a match */ | |
1920 | else if (bpt->owner->enable_state == bp_permanent) | |
1921 | return permanent_breakpoint_here; | |
1922 | else | |
1923 | any_breakpoint_here = 1; | |
1924 | } | |
1925 | } | |
c906108c | 1926 | |
c2c6d25f | 1927 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1928 | } |
1929 | ||
1c5cfe86 PA |
1930 | /* Return true if there's a moribund breakpoint at PC. */ |
1931 | ||
1932 | int | |
1933 | moribund_breakpoint_here_p (CORE_ADDR pc) | |
1934 | { | |
1935 | struct bp_location *loc; | |
1936 | int ix; | |
1937 | ||
1938 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
1939 | if (loc->address == pc) | |
1940 | return 1; | |
1941 | ||
1942 | return 0; | |
1943 | } | |
c2c6d25f | 1944 | |
c36b740a VP |
1945 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
1946 | inserted using regular breakpoint_chain/bp_location_chain mechanism. | |
1947 | This does not check for single-step breakpoints, which are | |
1948 | inserted and removed using direct target manipulation. */ | |
c906108c SS |
1949 | |
1950 | int | |
c36b740a | 1951 | regular_breakpoint_inserted_here_p (CORE_ADDR pc) |
c906108c | 1952 | { |
89f9893c | 1953 | const struct bp_location *bpt; |
c906108c | 1954 | |
075f6582 | 1955 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1956 | { |
075f6582 DJ |
1957 | if (bpt->loc_type != bp_loc_software_breakpoint |
1958 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1959 | continue; | |
1960 | ||
1961 | if (bpt->inserted | |
1962 | && bpt->address == pc) /* bp is inserted and matches pc */ | |
1963 | { | |
1964 | if (overlay_debugging | |
1965 | && section_is_overlay (bpt->section) | |
1966 | && !section_is_mapped (bpt->section)) | |
1967 | continue; /* unmapped overlay -- can't be a match */ | |
1968 | else | |
1969 | return 1; | |
1970 | } | |
c5aa993b | 1971 | } |
c36b740a VP |
1972 | return 0; |
1973 | } | |
1974 | ||
1975 | /* Returns non-zero iff there's either regular breakpoint | |
1976 | or a single step breakpoint inserted at PC. */ | |
1977 | ||
1978 | int | |
1979 | breakpoint_inserted_here_p (CORE_ADDR pc) | |
1980 | { | |
1981 | if (regular_breakpoint_inserted_here_p (pc)) | |
1982 | return 1; | |
c906108c | 1983 | |
1aafd4da UW |
1984 | if (single_step_breakpoint_inserted_here_p (pc)) |
1985 | return 1; | |
1986 | ||
c906108c SS |
1987 | return 0; |
1988 | } | |
1989 | ||
4fa8626c DJ |
1990 | /* This function returns non-zero iff there is a software breakpoint |
1991 | inserted at PC. */ | |
1992 | ||
1993 | int | |
1994 | software_breakpoint_inserted_here_p (CORE_ADDR pc) | |
1995 | { | |
89f9893c | 1996 | const struct bp_location *bpt; |
4fa8626c DJ |
1997 | int any_breakpoint_here = 0; |
1998 | ||
1999 | ALL_BP_LOCATIONS (bpt) | |
2000 | { | |
2001 | if (bpt->loc_type != bp_loc_software_breakpoint) | |
2002 | continue; | |
2003 | ||
0d381245 | 2004 | if (bpt->inserted |
4fa8626c DJ |
2005 | && bpt->address == pc) /* bp is enabled and matches pc */ |
2006 | { | |
2007 | if (overlay_debugging | |
2008 | && section_is_overlay (bpt->section) | |
2009 | && !section_is_mapped (bpt->section)) | |
2010 | continue; /* unmapped overlay -- can't be a match */ | |
2011 | else | |
2012 | return 1; | |
2013 | } | |
2014 | } | |
2015 | ||
1aafd4da UW |
2016 | /* Also check for software single-step breakpoints. */ |
2017 | if (single_step_breakpoint_inserted_here_p (pc)) | |
2018 | return 1; | |
2019 | ||
4fa8626c DJ |
2020 | return 0; |
2021 | } | |
2022 | ||
075f6582 DJ |
2023 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
2024 | PC is valid for process/thread PTID. */ | |
c906108c SS |
2025 | |
2026 | int | |
39f77062 | 2027 | breakpoint_thread_match (CORE_ADDR pc, ptid_t ptid) |
c906108c | 2028 | { |
89f9893c | 2029 | const struct bp_location *bpt; |
4a306c9a | 2030 | /* The thread and task IDs associated to PTID, computed lazily. */ |
a6f1cd96 | 2031 | int thread = -1; |
4a306c9a | 2032 | int task = 0; |
a6f1cd96 | 2033 | |
075f6582 | 2034 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 2035 | { |
075f6582 DJ |
2036 | if (bpt->loc_type != bp_loc_software_breakpoint |
2037 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
2038 | continue; | |
2039 | ||
a6f1cd96 JB |
2040 | if (!breakpoint_enabled (bpt->owner) |
2041 | && bpt->owner->enable_state != bp_permanent) | |
2042 | continue; | |
2043 | ||
2044 | if (bpt->address != pc) | |
2045 | continue; | |
2046 | ||
2047 | if (bpt->owner->thread != -1) | |
075f6582 | 2048 | { |
a6f1cd96 JB |
2049 | /* This is a thread-specific breakpoint. Check that ptid |
2050 | matches that thread. If thread hasn't been computed yet, | |
2051 | it is now time to do so. */ | |
2052 | if (thread == -1) | |
2053 | thread = pid_to_thread_id (ptid); | |
2054 | if (bpt->owner->thread != thread) | |
2055 | continue; | |
075f6582 | 2056 | } |
a6f1cd96 | 2057 | |
4a306c9a JB |
2058 | if (bpt->owner->task != 0) |
2059 | { | |
2060 | /* This is a task-specific breakpoint. Check that ptid | |
2061 | matches that task. If task hasn't been computed yet, | |
2062 | it is now time to do so. */ | |
2063 | if (task == 0) | |
2064 | task = ada_get_task_number (ptid); | |
2065 | if (bpt->owner->task != task) | |
2066 | continue; | |
2067 | } | |
2068 | ||
a6f1cd96 JB |
2069 | if (overlay_debugging |
2070 | && section_is_overlay (bpt->section) | |
2071 | && !section_is_mapped (bpt->section)) | |
2072 | continue; /* unmapped overlay -- can't be a match */ | |
2073 | ||
2074 | return 1; | |
c5aa993b | 2075 | } |
c906108c SS |
2076 | |
2077 | return 0; | |
2078 | } | |
c906108c | 2079 | \f |
c5aa993b | 2080 | |
c906108c SS |
2081 | /* bpstat stuff. External routines' interfaces are documented |
2082 | in breakpoint.h. */ | |
2083 | ||
2084 | int | |
fba45db2 | 2085 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c | 2086 | { |
533be4dd | 2087 | return (ep->type == bp_catchpoint); |
c906108c SS |
2088 | } |
2089 | ||
198757a8 VP |
2090 | void |
2091 | bpstat_free (bpstat bs) | |
2092 | { | |
2093 | if (bs->old_val != NULL) | |
2094 | value_free (bs->old_val); | |
2095 | free_command_lines (&bs->commands); | |
2096 | xfree (bs); | |
2097 | } | |
2098 | ||
c906108c SS |
2099 | /* Clear a bpstat so that it says we are not at any breakpoint. |
2100 | Also free any storage that is part of a bpstat. */ | |
2101 | ||
2102 | void | |
fba45db2 | 2103 | bpstat_clear (bpstat *bsp) |
c906108c SS |
2104 | { |
2105 | bpstat p; | |
2106 | bpstat q; | |
2107 | ||
2108 | if (bsp == 0) | |
2109 | return; | |
2110 | p = *bsp; | |
2111 | while (p != NULL) | |
2112 | { | |
2113 | q = p->next; | |
198757a8 | 2114 | bpstat_free (p); |
c906108c SS |
2115 | p = q; |
2116 | } | |
2117 | *bsp = NULL; | |
2118 | } | |
2119 | ||
2120 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
2121 | is part of the bpstat is copied as well. */ | |
2122 | ||
2123 | bpstat | |
fba45db2 | 2124 | bpstat_copy (bpstat bs) |
c906108c SS |
2125 | { |
2126 | bpstat p = NULL; | |
2127 | bpstat tmp; | |
2128 | bpstat retval = NULL; | |
2129 | ||
2130 | if (bs == NULL) | |
2131 | return bs; | |
2132 | ||
2133 | for (; bs != NULL; bs = bs->next) | |
2134 | { | |
2135 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
2136 | memcpy (tmp, bs, sizeof (*tmp)); | |
31cc81e9 DJ |
2137 | if (bs->commands != NULL) |
2138 | tmp->commands = copy_command_lines (bs->commands); | |
2139 | if (bs->old_val != NULL) | |
3c3185ac JK |
2140 | { |
2141 | tmp->old_val = value_copy (bs->old_val); | |
2142 | release_value (tmp->old_val); | |
2143 | } | |
31cc81e9 | 2144 | |
c906108c SS |
2145 | if (p == NULL) |
2146 | /* This is the first thing in the chain. */ | |
2147 | retval = tmp; | |
2148 | else | |
2149 | p->next = tmp; | |
2150 | p = tmp; | |
2151 | } | |
2152 | p->next = NULL; | |
2153 | return retval; | |
2154 | } | |
2155 | ||
2156 | /* Find the bpstat associated with this breakpoint */ | |
2157 | ||
2158 | bpstat | |
fba45db2 | 2159 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 2160 | { |
c5aa993b JM |
2161 | if (bsp == NULL) |
2162 | return NULL; | |
c906108c | 2163 | |
c5aa993b JM |
2164 | for (; bsp != NULL; bsp = bsp->next) |
2165 | { | |
4f8d1dc6 | 2166 | if (bsp->breakpoint_at && bsp->breakpoint_at->owner == breakpoint) |
c5aa993b JM |
2167 | return bsp; |
2168 | } | |
c906108c SS |
2169 | return NULL; |
2170 | } | |
2171 | ||
2172 | /* Find a step_resume breakpoint associated with this bpstat. | |
2173 | (If there are multiple step_resume bp's on the list, this function | |
2174 | will arbitrarily pick one.) | |
2175 | ||
2176 | It is an error to use this function if BPSTAT doesn't contain a | |
2177 | step_resume breakpoint. | |
2178 | ||
2179 | See wait_for_inferior's use of this function. */ | |
2180 | struct breakpoint * | |
fba45db2 | 2181 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c | 2182 | { |
8601f500 MS |
2183 | int current_thread; |
2184 | ||
8a3fe4f8 | 2185 | gdb_assert (bsp != NULL); |
c906108c | 2186 | |
8601f500 MS |
2187 | current_thread = pid_to_thread_id (inferior_ptid); |
2188 | ||
c906108c SS |
2189 | for (; bsp != NULL; bsp = bsp->next) |
2190 | { | |
059fb39f PM |
2191 | if ((bsp->breakpoint_at != NULL) |
2192 | && (bsp->breakpoint_at->owner->type == bp_step_resume) | |
2193 | && (bsp->breakpoint_at->owner->thread == current_thread | |
2194 | || bsp->breakpoint_at->owner->thread == -1)) | |
4f8d1dc6 | 2195 | return bsp->breakpoint_at->owner; |
c906108c SS |
2196 | } |
2197 | ||
8a3fe4f8 | 2198 | internal_error (__FILE__, __LINE__, _("No step_resume breakpoint found.")); |
c906108c SS |
2199 | } |
2200 | ||
2201 | ||
8671a17b | 2202 | /* Put in *NUM the breakpoint number of the first breakpoint we are stopped |
c906108c SS |
2203 | at. *BSP upon return is a bpstat which points to the remaining |
2204 | breakpoints stopped at (but which is not guaranteed to be good for | |
2205 | anything but further calls to bpstat_num). | |
8671a17b PA |
2206 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
2207 | Return -1 if stopped at a breakpoint that has been deleted since | |
2208 | we set it. | |
2209 | Return 1 otherwise. */ | |
c906108c SS |
2210 | |
2211 | int | |
8671a17b | 2212 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
2213 | { |
2214 | struct breakpoint *b; | |
2215 | ||
2216 | if ((*bsp) == NULL) | |
2217 | return 0; /* No more breakpoint values */ | |
8671a17b | 2218 | |
4f8d1dc6 VP |
2219 | /* We assume we'll never have several bpstats that |
2220 | correspond to a single breakpoint -- otherwise, | |
2221 | this function might return the same number more | |
2222 | than once and this will look ugly. */ | |
2223 | b = (*bsp)->breakpoint_at ? (*bsp)->breakpoint_at->owner : NULL; | |
8671a17b PA |
2224 | *bsp = (*bsp)->next; |
2225 | if (b == NULL) | |
2226 | return -1; /* breakpoint that's been deleted since */ | |
2227 | ||
2228 | *num = b->number; /* We have its number */ | |
2229 | return 1; | |
c906108c SS |
2230 | } |
2231 | ||
2232 | /* Modify BS so that the actions will not be performed. */ | |
2233 | ||
2234 | void | |
fba45db2 | 2235 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
2236 | { |
2237 | for (; bs != NULL; bs = bs->next) | |
2238 | { | |
c2b8ed2c | 2239 | free_command_lines (&bs->commands); |
c906108c SS |
2240 | if (bs->old_val != NULL) |
2241 | { | |
2242 | value_free (bs->old_val); | |
2243 | bs->old_val = NULL; | |
2244 | } | |
2245 | } | |
2246 | } | |
2247 | ||
f3b1572e PA |
2248 | /* Called when a command is about to proceed the inferior. */ |
2249 | ||
2250 | static void | |
2251 | breakpoint_about_to_proceed (void) | |
2252 | { | |
2253 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
2254 | { | |
2255 | struct thread_info *tp = inferior_thread (); | |
2256 | ||
2257 | /* Allow inferior function calls in breakpoint commands to not | |
2258 | interrupt the command list. When the call finishes | |
2259 | successfully, the inferior will be standing at the same | |
2260 | breakpoint as if nothing happened. */ | |
2261 | if (tp->in_infcall) | |
2262 | return; | |
2263 | } | |
2264 | ||
2265 | breakpoint_proceeded = 1; | |
2266 | } | |
2267 | ||
c906108c | 2268 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ |
c906108c | 2269 | static void |
4efb68b1 | 2270 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
2271 | { |
2272 | executing_breakpoint_commands = 0; | |
2273 | } | |
2274 | ||
2275 | /* Execute all the commands associated with all the breakpoints at this | |
2276 | location. Any of these commands could cause the process to proceed | |
2277 | beyond this point, etc. We look out for such changes by checking | |
347bddb7 | 2278 | the global "breakpoint_proceeded" after each command. |
c906108c | 2279 | |
347bddb7 PA |
2280 | Returns true if a breakpoint command resumed the inferior. In that |
2281 | case, it is the caller's responsibility to recall it again with the | |
2282 | bpstat of the current thread. */ | |
2283 | ||
2284 | static int | |
2285 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
2286 | { |
2287 | bpstat bs; | |
2288 | struct cleanup *old_chain; | |
347bddb7 | 2289 | int again = 0; |
c906108c SS |
2290 | |
2291 | /* Avoid endless recursion if a `source' command is contained | |
2292 | in bs->commands. */ | |
2293 | if (executing_breakpoint_commands) | |
347bddb7 | 2294 | return 0; |
c906108c SS |
2295 | |
2296 | executing_breakpoint_commands = 1; | |
2297 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
2298 | ||
c906108c SS |
2299 | /* This pointer will iterate over the list of bpstat's. */ |
2300 | bs = *bsp; | |
2301 | ||
2302 | breakpoint_proceeded = 0; | |
2303 | for (; bs != NULL; bs = bs->next) | |
2304 | { | |
6c50ab1c JB |
2305 | struct command_line *cmd; |
2306 | struct cleanup *this_cmd_tree_chain; | |
2307 | ||
2308 | /* Take ownership of the BSP's command tree, if it has one. | |
2309 | ||
2310 | The command tree could legitimately contain commands like | |
2311 | 'step' and 'next', which call clear_proceed_status, which | |
2312 | frees stop_bpstat's command tree. To make sure this doesn't | |
2313 | free the tree we're executing out from under us, we need to | |
2314 | take ownership of the tree ourselves. Since a given bpstat's | |
2315 | commands are only executed once, we don't need to copy it; we | |
2316 | can clear the pointer in the bpstat, and make sure we free | |
2317 | the tree when we're done. */ | |
c906108c | 2318 | cmd = bs->commands; |
6c50ab1c JB |
2319 | bs->commands = 0; |
2320 | this_cmd_tree_chain = make_cleanup_free_command_lines (&cmd); | |
2321 | ||
c906108c SS |
2322 | while (cmd != NULL) |
2323 | { | |
2324 | execute_control_command (cmd); | |
2325 | ||
2326 | if (breakpoint_proceeded) | |
2327 | break; | |
2328 | else | |
2329 | cmd = cmd->next; | |
2330 | } | |
6c50ab1c JB |
2331 | |
2332 | /* We can free this command tree now. */ | |
2333 | do_cleanups (this_cmd_tree_chain); | |
2334 | ||
c906108c | 2335 | if (breakpoint_proceeded) |
32c1e744 VP |
2336 | { |
2337 | if (target_can_async_p ()) | |
347bddb7 PA |
2338 | /* If we are in async mode, then the target might be still |
2339 | running, not stopped at any breakpoint, so nothing for | |
2340 | us to do here -- just return to the event loop. */ | |
2341 | ; | |
32c1e744 VP |
2342 | else |
2343 | /* In sync mode, when execute_control_command returns | |
2344 | we're already standing on the next breakpoint. | |
347bddb7 PA |
2345 | Breakpoint commands for that stop were not run, since |
2346 | execute_command does not run breakpoint commands -- | |
2347 | only command_line_handler does, but that one is not | |
2348 | involved in execution of breakpoint commands. So, we | |
2349 | can now execute breakpoint commands. It should be | |
2350 | noted that making execute_command do bpstat actions is | |
2351 | not an option -- in this case we'll have recursive | |
2352 | invocation of bpstat for each breakpoint with a | |
2353 | command, and can easily blow up GDB stack. Instead, we | |
2354 | return true, which will trigger the caller to recall us | |
2355 | with the new stop_bpstat. */ | |
2356 | again = 1; | |
2357 | break; | |
32c1e744 | 2358 | } |
c906108c | 2359 | } |
c2b8ed2c | 2360 | do_cleanups (old_chain); |
347bddb7 PA |
2361 | return again; |
2362 | } | |
2363 | ||
2364 | void | |
2365 | bpstat_do_actions (void) | |
2366 | { | |
2367 | /* Do any commands attached to breakpoint we are stopped at. */ | |
2368 | while (!ptid_equal (inferior_ptid, null_ptid) | |
2369 | && target_has_execution | |
2370 | && !is_exited (inferior_ptid) | |
2371 | && !is_executing (inferior_ptid)) | |
2372 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
2373 | and only return when it is stopped at the next breakpoint, we | |
2374 | keep doing breakpoint actions until it returns false to | |
2375 | indicate the inferior was not resumed. */ | |
2376 | if (!bpstat_do_actions_1 (&inferior_thread ()->stop_bpstat)) | |
2377 | break; | |
c906108c SS |
2378 | } |
2379 | ||
fa4727a6 DJ |
2380 | /* Print out the (old or new) value associated with a watchpoint. */ |
2381 | ||
2382 | static void | |
2383 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
2384 | { | |
2385 | if (val == NULL) | |
2386 | fprintf_unfiltered (stream, _("<unreadable>")); | |
2387 | else | |
79a45b7d TT |
2388 | { |
2389 | struct value_print_options opts; | |
2390 | get_user_print_options (&opts); | |
2391 | value_print (val, stream, &opts); | |
2392 | } | |
fa4727a6 DJ |
2393 | } |
2394 | ||
e514a9d6 | 2395 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 2396 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
2397 | by having it set different print_it values. |
2398 | ||
2399 | Current scheme: When we stop, bpstat_print() is called. It loops | |
2400 | through the bpstat list of things causing this stop, calling the | |
2401 | print_bp_stop_message function on each one. The behavior of the | |
2402 | print_bp_stop_message function depends on the print_it field of | |
2403 | bpstat. If such field so indicates, call this function here. | |
2404 | ||
2405 | Return values from this routine (ultimately used by bpstat_print() | |
2406 | and normal_stop() to decide what to do): | |
2407 | PRINT_NOTHING: Means we already printed all we needed to print, | |
2408 | don't print anything else. | |
2409 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
2410 | that something to be followed by a location. | |
2411 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
2412 | that something to be followed by a location. | |
2413 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
2414 | analysis. */ | |
c906108c | 2415 | |
917317f4 | 2416 | static enum print_stop_action |
fba45db2 | 2417 | print_it_typical (bpstat bs) |
c906108c | 2418 | { |
f7545552 | 2419 | struct cleanup *old_chain; |
4f8d1dc6 | 2420 | struct breakpoint *b; |
89f9893c | 2421 | const struct bp_location *bl; |
8b93c638 | 2422 | struct ui_stream *stb; |
f7545552 TT |
2423 | int bp_temp = 0; |
2424 | enum print_stop_action result; | |
2425 | ||
c906108c SS |
2426 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
2427 | which has since been deleted. */ | |
e514a9d6 | 2428 | if (bs->breakpoint_at == NULL) |
917317f4 | 2429 | return PRINT_UNKNOWN; |
0d381245 VP |
2430 | bl = bs->breakpoint_at; |
2431 | b = bl->owner; | |
c906108c | 2432 | |
f7545552 TT |
2433 | stb = ui_out_stream_new (uiout); |
2434 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
2435 | ||
4f8d1dc6 | 2436 | switch (b->type) |
c906108c | 2437 | { |
e514a9d6 JM |
2438 | case bp_breakpoint: |
2439 | case bp_hardware_breakpoint: | |
2cec12e5 | 2440 | bp_temp = bs->breakpoint_at->owner->disposition == disp_del; |
0d381245 VP |
2441 | if (bl->address != bl->requested_address) |
2442 | breakpoint_adjustment_warning (bl->requested_address, | |
2443 | bl->address, | |
4f8d1dc6 VP |
2444 | b->number, 1); |
2445 | annotate_breakpoint (b->number); | |
2cec12e5 AR |
2446 | if (bp_temp) |
2447 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
2448 | else | |
2449 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 2450 | if (ui_out_is_mi_like_p (uiout)) |
2cec12e5 AR |
2451 | { |
2452 | ui_out_field_string (uiout, "reason", | |
2453 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
2454 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
2455 | } | |
4f8d1dc6 | 2456 | ui_out_field_int (uiout, "bkptno", b->number); |
8b93c638 | 2457 | ui_out_text (uiout, ", "); |
f7545552 | 2458 | result = PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2459 | break; |
2460 | ||
2461 | case bp_shlib_event: | |
917317f4 JM |
2462 | /* Did we stop because the user set the stop_on_solib_events |
2463 | variable? (If so, we report this as a generic, "Stopped due | |
2464 | to shlib event" message.) */ | |
a3f17187 | 2465 | printf_filtered (_("Stopped due to shared library event\n")); |
f7545552 | 2466 | result = PRINT_NOTHING; |
e514a9d6 JM |
2467 | break; |
2468 | ||
c4093a6a JM |
2469 | case bp_thread_event: |
2470 | /* Not sure how we will get here. | |
2471 | GDB should not stop for these breakpoints. */ | |
a3f17187 | 2472 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 2473 | result = PRINT_NOTHING; |
c4093a6a JM |
2474 | break; |
2475 | ||
1900040c MS |
2476 | case bp_overlay_event: |
2477 | /* By analogy with the thread event, GDB should not stop for these. */ | |
a3f17187 | 2478 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 2479 | result = PRINT_NOTHING; |
1900040c MS |
2480 | break; |
2481 | ||
0fd8e87f UW |
2482 | case bp_longjmp_master: |
2483 | /* These should never be enabled. */ | |
2484 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
2485 | result = PRINT_NOTHING; | |
2486 | break; | |
2487 | ||
e514a9d6 JM |
2488 | case bp_watchpoint: |
2489 | case bp_hardware_watchpoint: | |
fa4727a6 DJ |
2490 | annotate_watchpoint (b->number); |
2491 | if (ui_out_is_mi_like_p (uiout)) | |
2492 | ui_out_field_string | |
2493 | (uiout, "reason", | |
2494 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
2495 | mention (b); | |
f7545552 | 2496 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
fa4727a6 DJ |
2497 | ui_out_text (uiout, "\nOld value = "); |
2498 | watchpoint_value_print (bs->old_val, stb->stream); | |
2499 | ui_out_field_stream (uiout, "old", stb); | |
2500 | ui_out_text (uiout, "\nNew value = "); | |
2501 | watchpoint_value_print (b->val, stb->stream); | |
2502 | ui_out_field_stream (uiout, "new", stb); | |
fa4727a6 | 2503 | ui_out_text (uiout, "\n"); |
e514a9d6 | 2504 | /* More than one watchpoint may have been triggered. */ |
f7545552 | 2505 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
2506 | break; |
2507 | ||
2508 | case bp_read_watchpoint: | |
9dc5e2a9 | 2509 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2510 | ui_out_field_string |
2511 | (uiout, "reason", | |
2512 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 2513 | mention (b); |
f7545552 | 2514 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 2515 | ui_out_text (uiout, "\nValue = "); |
fa4727a6 | 2516 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 2517 | ui_out_field_stream (uiout, "value", stb); |
8b93c638 | 2518 | ui_out_text (uiout, "\n"); |
f7545552 | 2519 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
2520 | break; |
2521 | ||
2522 | case bp_access_watchpoint: | |
fa4727a6 | 2523 | if (bs->old_val != NULL) |
8b93c638 | 2524 | { |
4f8d1dc6 | 2525 | annotate_watchpoint (b->number); |
9dc5e2a9 | 2526 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2527 | ui_out_field_string |
2528 | (uiout, "reason", | |
2529 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 2530 | mention (b); |
f7545552 | 2531 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 2532 | ui_out_text (uiout, "\nOld value = "); |
fa4727a6 | 2533 | watchpoint_value_print (bs->old_val, stb->stream); |
8b93c638 | 2534 | ui_out_field_stream (uiout, "old", stb); |
8b93c638 JM |
2535 | ui_out_text (uiout, "\nNew value = "); |
2536 | } | |
2537 | else | |
2538 | { | |
4f8d1dc6 | 2539 | mention (b); |
9dc5e2a9 | 2540 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2541 | ui_out_field_string |
2542 | (uiout, "reason", | |
2543 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
f7545552 | 2544 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2545 | ui_out_text (uiout, "\nValue = "); |
2546 | } | |
fa4727a6 | 2547 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 2548 | ui_out_field_stream (uiout, "new", stb); |
8b93c638 | 2549 | ui_out_text (uiout, "\n"); |
f7545552 | 2550 | result = PRINT_UNKNOWN; |
e514a9d6 | 2551 | break; |
4ce44c66 | 2552 | |
e514a9d6 JM |
2553 | /* Fall through, we don't deal with these types of breakpoints |
2554 | here. */ | |
2555 | ||
11cf8741 | 2556 | case bp_finish: |
9dc5e2a9 | 2557 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2558 | ui_out_field_string |
2559 | (uiout, "reason", | |
2560 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
f7545552 | 2561 | result = PRINT_UNKNOWN; |
8b93c638 JM |
2562 | break; |
2563 | ||
e514a9d6 | 2564 | case bp_until: |
9dc5e2a9 | 2565 | if (ui_out_is_mi_like_p (uiout)) |
1fbc2a49 NR |
2566 | ui_out_field_string |
2567 | (uiout, "reason", | |
2568 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
f7545552 | 2569 | result = PRINT_UNKNOWN; |
8b93c638 JM |
2570 | break; |
2571 | ||
c2d11a7d | 2572 | case bp_none: |
e514a9d6 JM |
2573 | case bp_longjmp: |
2574 | case bp_longjmp_resume: | |
2575 | case bp_step_resume: | |
e514a9d6 JM |
2576 | case bp_watchpoint_scope: |
2577 | case bp_call_dummy: | |
1042e4c0 | 2578 | case bp_tracepoint: |
e514a9d6 | 2579 | default: |
f7545552 TT |
2580 | result = PRINT_UNKNOWN; |
2581 | break; | |
e514a9d6 | 2582 | } |
f7545552 TT |
2583 | |
2584 | do_cleanups (old_chain); | |
2585 | return result; | |
e514a9d6 JM |
2586 | } |
2587 | ||
2588 | /* Generic routine for printing messages indicating why we | |
2589 | stopped. The behavior of this function depends on the value | |
2590 | 'print_it' in the bpstat structure. Under some circumstances we | |
2591 | may decide not to print anything here and delegate the task to | |
2592 | normal_stop(). */ | |
2593 | ||
2594 | static enum print_stop_action | |
2595 | print_bp_stop_message (bpstat bs) | |
2596 | { | |
2597 | switch (bs->print_it) | |
2598 | { | |
2599 | case print_it_noop: | |
2600 | /* Nothing should be printed for this bpstat entry. */ | |
2601 | return PRINT_UNKNOWN; | |
2602 | break; | |
2603 | ||
2604 | case print_it_done: | |
2605 | /* We still want to print the frame, but we already printed the | |
2606 | relevant messages. */ | |
2607 | return PRINT_SRC_AND_LOC; | |
2608 | break; | |
2609 | ||
2610 | case print_it_normal: | |
4f8d1dc6 | 2611 | { |
89f9893c | 2612 | const struct bp_location *bl = bs->breakpoint_at; |
4f8d1dc6 VP |
2613 | struct breakpoint *b = bl ? bl->owner : NULL; |
2614 | ||
2615 | /* Normal case. Call the breakpoint's print_it method, or | |
2616 | print_it_typical. */ | |
2617 | /* FIXME: how breakpoint can ever be NULL here? */ | |
2618 | if (b != NULL && b->ops != NULL && b->ops->print_it != NULL) | |
2619 | return b->ops->print_it (b); | |
2620 | else | |
2621 | return print_it_typical (bs); | |
2622 | } | |
2623 | break; | |
3086aeae | 2624 | |
e514a9d6 | 2625 | default: |
8e65ff28 | 2626 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2627 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 2628 | break; |
c906108c | 2629 | } |
c906108c SS |
2630 | } |
2631 | ||
e514a9d6 JM |
2632 | /* Print a message indicating what happened. This is called from |
2633 | normal_stop(). The input to this routine is the head of the bpstat | |
2634 | list - a list of the eventpoints that caused this stop. This | |
2635 | routine calls the generic print routine for printing a message | |
2636 | about reasons for stopping. This will print (for example) the | |
2637 | "Breakpoint n," part of the output. The return value of this | |
2638 | routine is one of: | |
c906108c | 2639 | |
917317f4 JM |
2640 | PRINT_UNKNOWN: Means we printed nothing |
2641 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2642 | code to print the location. An example is |
2643 | "Breakpoint 1, " which should be followed by | |
2644 | the location. | |
917317f4 | 2645 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2646 | to also print the location part of the message. |
2647 | An example is the catch/throw messages, which | |
917317f4 JM |
2648 | don't require a location appended to the end. |
2649 | PRINT_NOTHING: We have done some printing and we don't need any | |
2650 | further info to be printed.*/ | |
c906108c | 2651 | |
917317f4 | 2652 | enum print_stop_action |
fba45db2 | 2653 | bpstat_print (bpstat bs) |
c906108c SS |
2654 | { |
2655 | int val; | |
c5aa993b | 2656 | |
c906108c | 2657 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2658 | (Currently all watchpoints go on the bpstat whether hit or not. |
2659 | That probably could (should) be changed, provided care is taken | |
c906108c | 2660 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2661 | for (; bs; bs = bs->next) |
2662 | { | |
2663 | val = print_bp_stop_message (bs); | |
2664 | if (val == PRINT_SRC_ONLY | |
2665 | || val == PRINT_SRC_AND_LOC | |
2666 | || val == PRINT_NOTHING) | |
2667 | return val; | |
2668 | } | |
c906108c | 2669 | |
e514a9d6 JM |
2670 | /* We reached the end of the chain, or we got a null BS to start |
2671 | with and nothing was printed. */ | |
917317f4 | 2672 | return PRINT_UNKNOWN; |
c906108c SS |
2673 | } |
2674 | ||
2675 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2676 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2677 | The argument is a "struct expression *" that has been cast to char * to | |
2678 | make it pass through catch_errors. */ | |
2679 | ||
2680 | static int | |
4efb68b1 | 2681 | breakpoint_cond_eval (void *exp) |
c906108c | 2682 | { |
278cd55f | 2683 | struct value *mark = value_mark (); |
c5aa993b | 2684 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2685 | value_free_to_mark (mark); |
2686 | return i; | |
2687 | } | |
2688 | ||
2689 | /* Allocate a new bpstat and chain it to the current one. */ | |
2690 | ||
2691 | static bpstat | |
89f9893c | 2692 | bpstat_alloc (const struct bp_location *bl, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
2693 | { |
2694 | bpstat bs; | |
2695 | ||
2696 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2697 | cbs->next = bs; | |
4f8d1dc6 | 2698 | bs->breakpoint_at = bl; |
c906108c SS |
2699 | /* If the condition is false, etc., don't do the commands. */ |
2700 | bs->commands = NULL; | |
2701 | bs->old_val = NULL; | |
2702 | bs->print_it = print_it_normal; | |
2703 | return bs; | |
2704 | } | |
2705 | \f | |
d983da9c DJ |
2706 | /* The target has stopped with waitstatus WS. Check if any hardware |
2707 | watchpoints have triggered, according to the target. */ | |
2708 | ||
2709 | int | |
2710 | watchpoints_triggered (struct target_waitstatus *ws) | |
2711 | { | |
d92524f1 | 2712 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
2713 | CORE_ADDR addr; |
2714 | struct breakpoint *b; | |
2715 | ||
2716 | if (!stopped_by_watchpoint) | |
2717 | { | |
2718 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
2719 | as not triggered. */ | |
2720 | ALL_BREAKPOINTS (b) | |
2721 | if (b->type == bp_hardware_watchpoint | |
2722 | || b->type == bp_read_watchpoint | |
2723 | || b->type == bp_access_watchpoint) | |
2724 | b->watchpoint_triggered = watch_triggered_no; | |
2725 | ||
2726 | return 0; | |
2727 | } | |
2728 | ||
2729 | if (!target_stopped_data_address (¤t_target, &addr)) | |
2730 | { | |
2731 | /* We were stopped by a watchpoint, but we don't know where. | |
2732 | Mark all watchpoints as unknown. */ | |
2733 | ALL_BREAKPOINTS (b) | |
2734 | if (b->type == bp_hardware_watchpoint | |
2735 | || b->type == bp_read_watchpoint | |
2736 | || b->type == bp_access_watchpoint) | |
2737 | b->watchpoint_triggered = watch_triggered_unknown; | |
2738 | ||
2739 | return stopped_by_watchpoint; | |
2740 | } | |
2741 | ||
2742 | /* The target could report the data address. Mark watchpoints | |
2743 | affected by this data address as triggered, and all others as not | |
2744 | triggered. */ | |
2745 | ||
2746 | ALL_BREAKPOINTS (b) | |
2747 | if (b->type == bp_hardware_watchpoint | |
2748 | || b->type == bp_read_watchpoint | |
2749 | || b->type == bp_access_watchpoint) | |
2750 | { | |
a5606eee | 2751 | struct bp_location *loc; |
d983da9c DJ |
2752 | struct value *v; |
2753 | ||
2754 | b->watchpoint_triggered = watch_triggered_no; | |
a5606eee VP |
2755 | for (loc = b->loc; loc; loc = loc->next) |
2756 | /* Exact match not required. Within range is | |
2757 | sufficient. */ | |
5009afc5 AS |
2758 | if (target_watchpoint_addr_within_range (¤t_target, |
2759 | addr, loc->address, | |
2760 | loc->length)) | |
a5606eee VP |
2761 | { |
2762 | b->watchpoint_triggered = watch_triggered_yes; | |
2763 | break; | |
2764 | } | |
d983da9c DJ |
2765 | } |
2766 | ||
2767 | return 1; | |
2768 | } | |
2769 | ||
c906108c SS |
2770 | /* Possible return values for watchpoint_check (this can't be an enum |
2771 | because of check_errors). */ | |
2772 | /* The watchpoint has been deleted. */ | |
2773 | #define WP_DELETED 1 | |
2774 | /* The value has changed. */ | |
2775 | #define WP_VALUE_CHANGED 2 | |
2776 | /* The value has not changed. */ | |
2777 | #define WP_VALUE_NOT_CHANGED 3 | |
2778 | ||
2779 | #define BP_TEMPFLAG 1 | |
2780 | #define BP_HARDWAREFLAG 2 | |
2781 | ||
2782 | /* Check watchpoint condition. */ | |
2783 | ||
2784 | static int | |
4efb68b1 | 2785 | watchpoint_check (void *p) |
c906108c SS |
2786 | { |
2787 | bpstat bs = (bpstat) p; | |
2788 | struct breakpoint *b; | |
2789 | struct frame_info *fr; | |
2790 | int within_current_scope; | |
2791 | ||
4f8d1dc6 | 2792 | b = bs->breakpoint_at->owner; |
c906108c SS |
2793 | |
2794 | if (b->exp_valid_block == NULL) | |
2795 | within_current_scope = 1; | |
2796 | else | |
2797 | { | |
edb3359d DJ |
2798 | struct frame_info *frame = get_current_frame (); |
2799 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
2800 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
2801 | ||
101dcfbe | 2802 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 2803 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
2804 | |
2805 | /* If we've gotten confused in the unwinder, we might have | |
2806 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
2807 | if (within_current_scope) |
2808 | { | |
2809 | struct symbol *function; | |
2810 | ||
2811 | function = get_frame_function (fr); | |
2812 | if (function == NULL | |
2813 | || !contained_in (b->exp_valid_block, | |
2814 | SYMBOL_BLOCK_VALUE (function))) | |
2815 | within_current_scope = 0; | |
2816 | } | |
69fbadd5 | 2817 | |
c12260ac CV |
2818 | /* in_function_epilogue_p() returns a non-zero value if we're still |
2819 | in the function but the stack frame has already been invalidated. | |
2820 | Since we can't rely on the values of local variables after the | |
2821 | stack has been destroyed, we are treating the watchpoint in that | |
edb3359d DJ |
2822 | state as `not changed' without further checking. Don't mark |
2823 | watchpoints as changed if the current frame is in an epilogue - | |
2824 | even if they are in some other frame, our view of the stack | |
2825 | is likely to be wrong. */ | |
2826 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) | |
2827 | return WP_VALUE_NOT_CHANGED; | |
fb14de7b | 2828 | |
edb3359d | 2829 | if (within_current_scope) |
c906108c SS |
2830 | /* If we end up stopping, the current frame will get selected |
2831 | in normal_stop. So this call to select_frame won't affect | |
2832 | the user. */ | |
0f7d239c | 2833 | select_frame (fr); |
c906108c | 2834 | } |
c5aa993b | 2835 | |
c906108c SS |
2836 | if (within_current_scope) |
2837 | { | |
2838 | /* We use value_{,free_to_}mark because it could be a | |
2839 | *long* time before we return to the command level and | |
c5aa993b JM |
2840 | call free_all_values. We can't call free_all_values because |
2841 | we might be in the middle of evaluating a function call. */ | |
c906108c | 2842 | |
278cd55f | 2843 | struct value *mark = value_mark (); |
fa4727a6 DJ |
2844 | struct value *new_val; |
2845 | ||
2846 | fetch_watchpoint_value (b->exp, &new_val, NULL, NULL); | |
2847 | if ((b->val != NULL) != (new_val != NULL) | |
2848 | || (b->val != NULL && !value_equal (b->val, new_val))) | |
c906108c | 2849 | { |
fa4727a6 DJ |
2850 | if (new_val != NULL) |
2851 | { | |
2852 | release_value (new_val); | |
2853 | value_free_to_mark (mark); | |
2854 | } | |
c906108c SS |
2855 | bs->old_val = b->val; |
2856 | b->val = new_val; | |
fa4727a6 | 2857 | b->val_valid = 1; |
c906108c SS |
2858 | /* We will stop here */ |
2859 | return WP_VALUE_CHANGED; | |
2860 | } | |
2861 | else | |
2862 | { | |
2863 | /* Nothing changed, don't do anything. */ | |
2864 | value_free_to_mark (mark); | |
2865 | /* We won't stop here */ | |
2866 | return WP_VALUE_NOT_CHANGED; | |
2867 | } | |
2868 | } | |
2869 | else | |
2870 | { | |
2871 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2872 | if we temporarily ignored the watchpoint, then when |
2873 | we reenter the block in which it is valid it contains | |
2874 | garbage (in the case of a function, it may have two | |
2875 | garbage values, one before and one after the prologue). | |
2876 | So we can't even detect the first assignment to it and | |
2877 | watch after that (since the garbage may or may not equal | |
2878 | the first value assigned). */ | |
4ce44c66 JM |
2879 | /* We print all the stop information in print_it_typical(), but |
2880 | in this case, by the time we call print_it_typical() this bp | |
2881 | will be deleted already. So we have no choice but print the | |
2882 | information here. */ | |
9dc5e2a9 | 2883 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2884 | ui_out_field_string |
2885 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 2886 | ui_out_text (uiout, "\nWatchpoint "); |
4f8d1dc6 | 2887 | ui_out_field_int (uiout, "wpnum", b->number); |
8b93c638 JM |
2888 | ui_out_text (uiout, " deleted because the program has left the block in\n\ |
2889 | which its expression is valid.\n"); | |
4ce44c66 | 2890 | |
c906108c | 2891 | if (b->related_breakpoint) |
b5de0fa7 EZ |
2892 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2893 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
2894 | |
2895 | return WP_DELETED; | |
2896 | } | |
2897 | } | |
2898 | ||
18a18393 VP |
2899 | /* Return true if it looks like target has stopped due to hitting |
2900 | breakpoint location BL. This function does not check if we | |
2901 | should stop, only if BL explains the stop. */ | |
2902 | static int | |
2903 | bpstat_check_location (const struct bp_location *bl, CORE_ADDR bp_addr) | |
2904 | { | |
2905 | struct breakpoint *b = bl->owner; | |
2906 | ||
2907 | if (b->type != bp_watchpoint | |
2908 | && b->type != bp_hardware_watchpoint | |
2909 | && b->type != bp_read_watchpoint | |
2910 | && b->type != bp_access_watchpoint | |
2911 | && b->type != bp_hardware_breakpoint | |
fe798b75 | 2912 | && b->type != bp_catchpoint) /* a non-watchpoint bp */ |
18a18393 VP |
2913 | { |
2914 | if (bl->address != bp_addr) /* address doesn't match */ | |
2915 | return 0; | |
2916 | if (overlay_debugging /* unmapped overlay section */ | |
2917 | && section_is_overlay (bl->section) | |
2918 | && !section_is_mapped (bl->section)) | |
2919 | return 0; | |
2920 | } | |
2921 | ||
2922 | /* Continuable hardware watchpoints are treated as non-existent if the | |
2923 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
2924 | some data address). Otherwise gdb won't stop on a break instruction | |
2925 | in the code (not from a breakpoint) when a hardware watchpoint has | |
2926 | been defined. Also skip watchpoints which we know did not trigger | |
2927 | (did not match the data address). */ | |
2928 | ||
2929 | if ((b->type == bp_hardware_watchpoint | |
2930 | || b->type == bp_read_watchpoint | |
2931 | || b->type == bp_access_watchpoint) | |
2932 | && b->watchpoint_triggered == watch_triggered_no) | |
2933 | return 0; | |
2934 | ||
2935 | if (b->type == bp_hardware_breakpoint) | |
2936 | { | |
2937 | if (bl->address != bp_addr) | |
2938 | return 0; | |
2939 | if (overlay_debugging /* unmapped overlay section */ | |
2940 | && section_is_overlay (bl->section) | |
2941 | && !section_is_mapped (bl->section)) | |
2942 | return 0; | |
2943 | } | |
ce78b96d | 2944 | |
ce78b96d JB |
2945 | if (b->type == bp_catchpoint) |
2946 | { | |
2947 | gdb_assert (b->ops != NULL && b->ops->breakpoint_hit != NULL); | |
2948 | if (!b->ops->breakpoint_hit (b)) | |
2949 | return 0; | |
2950 | } | |
2951 | ||
18a18393 VP |
2952 | return 1; |
2953 | } | |
2954 | ||
2955 | /* If BS refers to a watchpoint, determine if the watched values | |
2956 | has actually changed, and we should stop. If not, set BS->stop | |
2957 | to 0. */ | |
2958 | static void | |
2959 | bpstat_check_watchpoint (bpstat bs) | |
2960 | { | |
2961 | const struct bp_location *bl = bs->breakpoint_at; | |
2962 | struct breakpoint *b = bl->owner; | |
2963 | ||
2964 | if (b->type == bp_watchpoint | |
2965 | || b->type == bp_read_watchpoint | |
2966 | || b->type == bp_access_watchpoint | |
2967 | || b->type == bp_hardware_watchpoint) | |
2968 | { | |
2969 | CORE_ADDR addr; | |
2970 | struct value *v; | |
2971 | int must_check_value = 0; | |
2972 | ||
2973 | if (b->type == bp_watchpoint) | |
2974 | /* For a software watchpoint, we must always check the | |
2975 | watched value. */ | |
2976 | must_check_value = 1; | |
2977 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
2978 | /* We have a hardware watchpoint (read, write, or access) | |
2979 | and the target earlier reported an address watched by | |
2980 | this watchpoint. */ | |
2981 | must_check_value = 1; | |
2982 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
2983 | && b->type == bp_hardware_watchpoint) | |
2984 | /* We were stopped by a hardware watchpoint, but the target could | |
2985 | not report the data address. We must check the watchpoint's | |
2986 | value. Access and read watchpoints are out of luck; without | |
2987 | a data address, we can't figure it out. */ | |
2988 | must_check_value = 1; | |
2989 | ||
2990 | if (must_check_value) | |
2991 | { | |
2992 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
2993 | b->number); | |
2994 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2995 | int e = catch_errors (watchpoint_check, bs, message, | |
2996 | RETURN_MASK_ALL); | |
2997 | do_cleanups (cleanups); | |
2998 | switch (e) | |
2999 | { | |
3000 | case WP_DELETED: | |
3001 | /* We've already printed what needs to be printed. */ | |
3002 | bs->print_it = print_it_done; | |
3003 | /* Stop. */ | |
3004 | break; | |
3005 | case WP_VALUE_CHANGED: | |
3006 | if (b->type == bp_read_watchpoint) | |
3007 | { | |
3008 | /* Don't stop: read watchpoints shouldn't fire if | |
3009 | the value has changed. This is for targets | |
3010 | which cannot set read-only watchpoints. */ | |
3011 | bs->print_it = print_it_noop; | |
3012 | bs->stop = 0; | |
3013 | } | |
3014 | break; | |
3015 | case WP_VALUE_NOT_CHANGED: | |
3016 | if (b->type == bp_hardware_watchpoint | |
3017 | || b->type == bp_watchpoint) | |
3018 | { | |
3019 | /* Don't stop: write watchpoints shouldn't fire if | |
3020 | the value hasn't changed. */ | |
3021 | bs->print_it = print_it_noop; | |
3022 | bs->stop = 0; | |
3023 | } | |
3024 | /* Stop. */ | |
3025 | break; | |
3026 | default: | |
3027 | /* Can't happen. */ | |
3028 | case 0: | |
3029 | /* Error from catch_errors. */ | |
3030 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); | |
3031 | if (b->related_breakpoint) | |
3032 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
3033 | b->disposition = disp_del_at_next_stop; | |
3034 | /* We've already printed what needs to be printed. */ | |
3035 | bs->print_it = print_it_done; | |
3036 | break; | |
3037 | } | |
3038 | } | |
3039 | else /* must_check_value == 0 */ | |
3040 | { | |
3041 | /* This is a case where some watchpoint(s) triggered, but | |
3042 | not at the address of this watchpoint, or else no | |
3043 | watchpoint triggered after all. So don't print | |
3044 | anything for this watchpoint. */ | |
3045 | bs->print_it = print_it_noop; | |
3046 | bs->stop = 0; | |
3047 | } | |
3048 | } | |
3049 | } | |
3050 | ||
3051 | ||
3052 | /* Check conditions (condition proper, frame, thread and ignore count) | |
3053 | of breakpoint referred to by BS. If we should not stop for this | |
3054 | breakpoint, set BS->stop to 0. */ | |
3055 | static void | |
3056 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
3057 | { | |
3058 | int thread_id = pid_to_thread_id (ptid); | |
3059 | const struct bp_location *bl = bs->breakpoint_at; | |
3060 | struct breakpoint *b = bl->owner; | |
3061 | ||
3062 | if (frame_id_p (b->frame_id) | |
edb3359d | 3063 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 VP |
3064 | bs->stop = 0; |
3065 | else if (bs->stop) | |
3066 | { | |
3067 | int value_is_zero = 0; | |
3068 | ||
3069 | /* If this is a scope breakpoint, mark the associated | |
3070 | watchpoint as triggered so that we will handle the | |
3071 | out-of-scope event. We'll get to the watchpoint next | |
3072 | iteration. */ | |
3073 | if (b->type == bp_watchpoint_scope) | |
3074 | b->related_breakpoint->watchpoint_triggered = watch_triggered_yes; | |
3075 | ||
3076 | if (bl->cond && bl->owner->disposition != disp_del_at_next_stop) | |
3077 | { | |
c5bc3a77 DJ |
3078 | /* We use value_mark and value_free_to_mark because it could |
3079 | be a long time before we return to the command level and | |
3080 | call free_all_values. We can't call free_all_values | |
3081 | because we might be in the middle of evaluating a | |
3082 | function call. */ | |
3083 | struct value *mark = value_mark (); | |
3084 | ||
edb3359d DJ |
3085 | /* Need to select the frame, with all that implies so that |
3086 | the conditions will have the right context. Because we | |
3087 | use the frame, we will not see an inlined function's | |
3088 | variables when we arrive at a breakpoint at the start | |
3089 | of the inlined function; the current frame will be the | |
3090 | call site. */ | |
18a18393 VP |
3091 | select_frame (get_current_frame ()); |
3092 | value_is_zero | |
3093 | = catch_errors (breakpoint_cond_eval, (bl->cond), | |
3094 | "Error in testing breakpoint condition:\n", | |
3095 | RETURN_MASK_ALL); | |
3096 | /* FIXME-someday, should give breakpoint # */ | |
c5bc3a77 | 3097 | value_free_to_mark (mark); |
18a18393 VP |
3098 | } |
3099 | if (bl->cond && value_is_zero) | |
3100 | { | |
3101 | bs->stop = 0; | |
3102 | } | |
3103 | else if (b->thread != -1 && b->thread != thread_id) | |
3104 | { | |
3105 | bs->stop = 0; | |
3106 | } | |
3107 | else if (b->ignore_count > 0) | |
3108 | { | |
3109 | b->ignore_count--; | |
3110 | annotate_ignore_count_change (); | |
3111 | bs->stop = 0; | |
3112 | /* Increase the hit count even though we don't | |
3113 | stop. */ | |
3114 | ++(b->hit_count); | |
3115 | } | |
3116 | } | |
3117 | } | |
3118 | ||
3119 | ||
9709f61c | 3120 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 3121 | BP_ADDR in thread PTID. |
c906108c | 3122 | |
d983da9c | 3123 | Determine whether we stopped at a breakpoint, etc, or whether we |
c906108c SS |
3124 | don't understand this stop. Result is a chain of bpstat's such that: |
3125 | ||
c5aa993b | 3126 | if we don't understand the stop, the result is a null pointer. |
c906108c | 3127 | |
c5aa993b | 3128 | if we understand why we stopped, the result is not null. |
c906108c | 3129 | |
c5aa993b JM |
3130 | Each element of the chain refers to a particular breakpoint or |
3131 | watchpoint at which we have stopped. (We may have stopped for | |
3132 | several reasons concurrently.) | |
c906108c | 3133 | |
c5aa993b JM |
3134 | Each element of the chain has valid next, breakpoint_at, |
3135 | commands, FIXME??? fields. */ | |
c906108c SS |
3136 | |
3137 | bpstat | |
d983da9c | 3138 | bpstat_stop_status (CORE_ADDR bp_addr, ptid_t ptid) |
c906108c | 3139 | { |
0d381245 | 3140 | struct breakpoint *b = NULL; |
89f9893c | 3141 | const struct bp_location *bl; |
20874c92 | 3142 | struct bp_location *loc; |
c906108c SS |
3143 | /* Root of the chain of bpstat's */ |
3144 | struct bpstats root_bs[1]; | |
3145 | /* Pointer to the last thing in the chain currently. */ | |
3146 | bpstat bs = root_bs; | |
20874c92 | 3147 | int ix; |
d832cb68 | 3148 | int need_remove_insert; |
c906108c | 3149 | |
0d381245 | 3150 | ALL_BP_LOCATIONS (bl) |
c5aa993b | 3151 | { |
0d381245 VP |
3152 | b = bl->owner; |
3153 | gdb_assert (b); | |
468d015d | 3154 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) |
c5aa993b JM |
3155 | continue; |
3156 | ||
a5606eee VP |
3157 | /* For hardware watchpoints, we look only at the first location. |
3158 | The watchpoint_check function will work on entire expression, | |
3159 | not the individual locations. For read watchopints, the | |
3160 | watchpoints_triggered function have checked all locations | |
3161 | alrea | |
3162 | */ | |
3163 | if (b->type == bp_hardware_watchpoint && bl != b->loc) | |
3164 | continue; | |
3165 | ||
18a18393 VP |
3166 | if (!bpstat_check_location (bl, bp_addr)) |
3167 | continue; | |
3168 | ||
c5aa993b JM |
3169 | /* Come here if it's a watchpoint, or if the break address matches */ |
3170 | ||
0d381245 | 3171 | bs = bpstat_alloc (bl, bs); /* Alloc a bpstat to explain stop */ |
c5aa993b | 3172 | |
18a18393 VP |
3173 | /* Assume we stop. Should we find watchpoint that is not actually |
3174 | triggered, or if condition of breakpoint is false, we'll reset | |
3175 | 'stop' to 0. */ | |
c5aa993b JM |
3176 | bs->stop = 1; |
3177 | bs->print = 1; | |
3178 | ||
18a18393 VP |
3179 | bpstat_check_watchpoint (bs); |
3180 | if (!bs->stop) | |
3181 | continue; | |
c5aa993b | 3182 | |
0fd8e87f UW |
3183 | if (b->type == bp_thread_event || b->type == bp_overlay_event |
3184 | || b->type == bp_longjmp_master) | |
18a18393 | 3185 | /* We do not stop for these. */ |
c5aa993b JM |
3186 | bs->stop = 0; |
3187 | else | |
18a18393 VP |
3188 | bpstat_check_breakpoint_conditions (bs, ptid); |
3189 | ||
3190 | if (bs->stop) | |
c5aa993b | 3191 | { |
18a18393 | 3192 | ++(b->hit_count); |
d983da9c | 3193 | |
18a18393 VP |
3194 | /* We will stop here */ |
3195 | if (b->disposition == disp_disable) | |
c5aa993b | 3196 | { |
514f746b AR |
3197 | if (b->enable_state != bp_permanent) |
3198 | b->enable_state = bp_disabled; | |
b60e7edf | 3199 | update_global_location_list (0); |
c5aa993b | 3200 | } |
18a18393 VP |
3201 | if (b->silent) |
3202 | bs->print = 0; | |
3203 | bs->commands = b->commands; | |
059fb39f PM |
3204 | if (bs->commands |
3205 | && (strcmp ("silent", bs->commands->line) == 0 | |
3206 | || (xdb_commands && strcmp ("Q", bs->commands->line) == 0))) | |
c5aa993b | 3207 | { |
18a18393 VP |
3208 | bs->commands = bs->commands->next; |
3209 | bs->print = 0; | |
c5aa993b | 3210 | } |
18a18393 | 3211 | bs->commands = copy_command_lines (bs->commands); |
c5aa993b | 3212 | } |
18a18393 | 3213 | |
c5aa993b JM |
3214 | /* Print nothing for this entry if we dont stop or if we dont print. */ |
3215 | if (bs->stop == 0 || bs->print == 0) | |
3216 | bs->print_it = print_it_noop; | |
3217 | } | |
c906108c | 3218 | |
20874c92 VP |
3219 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) |
3220 | { | |
3221 | if (loc->address == bp_addr) | |
3222 | { | |
3223 | bs = bpstat_alloc (loc, bs); | |
3224 | /* For hits of moribund locations, we should just proceed. */ | |
3225 | bs->stop = 0; | |
3226 | bs->print = 0; | |
3227 | bs->print_it = print_it_noop; | |
3228 | } | |
3229 | } | |
3230 | ||
c906108c SS |
3231 | bs->next = NULL; /* Terminate the chain */ |
3232 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
3233 | ||
d983da9c DJ |
3234 | /* If we aren't stopping, the value of some hardware watchpoint may |
3235 | not have changed, but the intermediate memory locations we are | |
3236 | watching may have. Don't bother if we're stopping; this will get | |
3237 | done later. */ | |
3238 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3239 | if (bs->stop) | |
3240 | break; | |
3241 | ||
d832cb68 | 3242 | need_remove_insert = 0; |
d983da9c DJ |
3243 | if (bs == NULL) |
3244 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3245 | if (!bs->stop | |
20874c92 | 3246 | && bs->breakpoint_at->owner |
d983da9c DJ |
3247 | && (bs->breakpoint_at->owner->type == bp_hardware_watchpoint |
3248 | || bs->breakpoint_at->owner->type == bp_read_watchpoint | |
3249 | || bs->breakpoint_at->owner->type == bp_access_watchpoint)) | |
3250 | { | |
a5606eee VP |
3251 | /* remove/insert can invalidate bs->breakpoint_at, if this |
3252 | location is no longer used by the watchpoint. Prevent | |
3253 | further code from trying to use it. */ | |
3254 | bs->breakpoint_at = NULL; | |
d832cb68 | 3255 | need_remove_insert = 1; |
d983da9c DJ |
3256 | } |
3257 | ||
d832cb68 DD |
3258 | if (need_remove_insert) |
3259 | { | |
3260 | remove_breakpoints (); | |
3261 | insert_breakpoints (); | |
3262 | } | |
3263 | ||
d983da9c | 3264 | return root_bs->next; |
c906108c SS |
3265 | } |
3266 | \f | |
3267 | /* Tell what to do about this bpstat. */ | |
3268 | struct bpstat_what | |
fba45db2 | 3269 | bpstat_what (bpstat bs) |
c906108c SS |
3270 | { |
3271 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
3272 | enum class |
3273 | { | |
3274 | /* This bpstat element has no effect on the main_action. */ | |
3275 | no_effect = 0, | |
3276 | ||
3277 | /* There was a watchpoint, stop but don't print. */ | |
3278 | wp_silent, | |
c906108c | 3279 | |
c5aa993b JM |
3280 | /* There was a watchpoint, stop and print. */ |
3281 | wp_noisy, | |
c906108c | 3282 | |
c5aa993b JM |
3283 | /* There was a breakpoint but we're not stopping. */ |
3284 | bp_nostop, | |
c906108c | 3285 | |
c5aa993b JM |
3286 | /* There was a breakpoint, stop but don't print. */ |
3287 | bp_silent, | |
c906108c | 3288 | |
c5aa993b JM |
3289 | /* There was a breakpoint, stop and print. */ |
3290 | bp_noisy, | |
c906108c | 3291 | |
c5aa993b JM |
3292 | /* We hit the longjmp breakpoint. */ |
3293 | long_jump, | |
c906108c | 3294 | |
c5aa993b JM |
3295 | /* We hit the longjmp_resume breakpoint. */ |
3296 | long_resume, | |
c906108c | 3297 | |
c5aa993b JM |
3298 | /* We hit the step_resume breakpoint. */ |
3299 | step_resume, | |
c906108c | 3300 | |
c5aa993b JM |
3301 | /* We hit the shared library event breakpoint. */ |
3302 | shlib_event, | |
c906108c | 3303 | |
c5aa993b JM |
3304 | /* This is just used to count how many enums there are. */ |
3305 | class_last | |
c906108c SS |
3306 | }; |
3307 | ||
3308 | /* Here is the table which drives this routine. So that we can | |
3309 | format it pretty, we define some abbreviations for the | |
3310 | enum bpstat_what codes. */ | |
3311 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
3312 | #define ss BPSTAT_WHAT_STOP_SILENT | |
3313 | #define sn BPSTAT_WHAT_STOP_NOISY | |
3314 | #define sgl BPSTAT_WHAT_SINGLE | |
3315 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
3316 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
c906108c | 3317 | #define sr BPSTAT_WHAT_STEP_RESUME |
c906108c | 3318 | #define shl BPSTAT_WHAT_CHECK_SHLIBS |
c906108c SS |
3319 | |
3320 | /* "Can't happen." Might want to print an error message. | |
3321 | abort() is not out of the question, but chances are GDB is just | |
3322 | a bit confused, not unusable. */ | |
3323 | #define err BPSTAT_WHAT_STOP_NOISY | |
3324 | ||
3325 | /* Given an old action and a class, come up with a new action. */ | |
3326 | /* One interesting property of this table is that wp_silent is the same | |
3327 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
3328 | after stopping, the check for whether to step over a breakpoint | |
3329 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
3330 | reference to how we stopped. We retain separate wp_silent and |
3331 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
3332 | |
3333 | Another possibly interesting property of this table is that | |
3334 | there's a partial ordering, priority-like, of the actions. Once | |
3335 | you've decided that some action is appropriate, you'll never go | |
3336 | back and decide something of a lower priority is better. The | |
3337 | ordering is: | |
3338 | ||
d81191fc JB |
3339 | kc < clr sgl shl slr sn sr ss |
3340 | sgl < shl slr sn sr ss | |
3341 | slr < err shl sn sr ss | |
3342 | clr < err shl sn sr ss | |
3343 | ss < shl sn sr | |
3344 | sn < shl sr | |
3345 | shl < sr | |
4d5b2cd7 | 3346 | sr < |
c5aa993b | 3347 | |
43ff13b4 JM |
3348 | What I think this means is that we don't need a damned table |
3349 | here. If you just put the rows and columns in the right order, | |
3350 | it'd look awfully regular. We could simply walk the bpstat list | |
3351 | and choose the highest priority action we find, with a little | |
78b6a731 | 3352 | logic to handle the 'err' cases. */ |
c906108c SS |
3353 | |
3354 | /* step_resume entries: a step resume breakpoint overrides another | |
3355 | breakpoint of signal handling (see comment in wait_for_inferior | |
fcf70625 | 3356 | at where we set the step_resume breakpoint). */ |
c906108c SS |
3357 | |
3358 | static const enum bpstat_what_main_action | |
c5aa993b JM |
3359 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
3360 | { | |
3361 | /* old action */ | |
d81191fc | 3362 | /* kc ss sn sgl slr clr sr shl |
c5aa993b JM |
3363 | */ |
3364 | /*no_effect */ | |
d81191fc | 3365 | {kc, ss, sn, sgl, slr, clr, sr, shl}, |
c5aa993b | 3366 | /*wp_silent */ |
d81191fc | 3367 | {ss, ss, sn, ss, ss, ss, sr, shl}, |
c5aa993b | 3368 | /*wp_noisy */ |
d81191fc | 3369 | {sn, sn, sn, sn, sn, sn, sr, shl}, |
c5aa993b | 3370 | /*bp_nostop */ |
d81191fc | 3371 | {sgl, ss, sn, sgl, slr, slr, sr, shl}, |
c5aa993b | 3372 | /*bp_silent */ |
d81191fc | 3373 | {ss, ss, sn, ss, ss, ss, sr, shl}, |
c5aa993b | 3374 | /*bp_noisy */ |
d81191fc | 3375 | {sn, sn, sn, sn, sn, sn, sr, shl}, |
c5aa993b | 3376 | /*long_jump */ |
d81191fc | 3377 | {slr, ss, sn, slr, slr, err, sr, shl}, |
c5aa993b | 3378 | /*long_resume */ |
d81191fc | 3379 | {clr, ss, sn, err, err, err, sr, shl}, |
c5aa993b | 3380 | /*step_resume */ |
d81191fc | 3381 | {sr, sr, sr, sr, sr, sr, sr, sr}, |
c5aa993b | 3382 | /*shlib */ |
d81191fc | 3383 | {shl, shl, shl, shl, shl, shl, sr, shl} |
c5aa993b | 3384 | }; |
c906108c SS |
3385 | |
3386 | #undef kc | |
3387 | #undef ss | |
3388 | #undef sn | |
3389 | #undef sgl | |
3390 | #undef slr | |
3391 | #undef clr | |
c906108c SS |
3392 | #undef err |
3393 | #undef sr | |
3394 | #undef ts | |
3395 | #undef shl | |
c906108c SS |
3396 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; |
3397 | struct bpstat_what retval; | |
3398 | ||
3399 | retval.call_dummy = 0; | |
3400 | for (; bs != NULL; bs = bs->next) | |
3401 | { | |
3402 | enum class bs_class = no_effect; | |
3403 | if (bs->breakpoint_at == NULL) | |
3404 | /* I suspect this can happen if it was a momentary breakpoint | |
3405 | which has since been deleted. */ | |
3406 | continue; | |
20874c92 VP |
3407 | if (bs->breakpoint_at->owner == NULL) |
3408 | bs_class = bp_nostop; | |
3409 | else | |
4f8d1dc6 | 3410 | switch (bs->breakpoint_at->owner->type) |
c906108c SS |
3411 | { |
3412 | case bp_none: | |
3413 | continue; | |
3414 | ||
3415 | case bp_breakpoint: | |
3416 | case bp_hardware_breakpoint: | |
3417 | case bp_until: | |
3418 | case bp_finish: | |
3419 | if (bs->stop) | |
3420 | { | |
3421 | if (bs->print) | |
3422 | bs_class = bp_noisy; | |
3423 | else | |
3424 | bs_class = bp_silent; | |
3425 | } | |
3426 | else | |
3427 | bs_class = bp_nostop; | |
3428 | break; | |
3429 | case bp_watchpoint: | |
3430 | case bp_hardware_watchpoint: | |
3431 | case bp_read_watchpoint: | |
3432 | case bp_access_watchpoint: | |
3433 | if (bs->stop) | |
3434 | { | |
3435 | if (bs->print) | |
3436 | bs_class = wp_noisy; | |
3437 | else | |
3438 | bs_class = wp_silent; | |
3439 | } | |
3440 | else | |
53a5351d JM |
3441 | /* There was a watchpoint, but we're not stopping. |
3442 | This requires no further action. */ | |
c906108c SS |
3443 | bs_class = no_effect; |
3444 | break; | |
3445 | case bp_longjmp: | |
3446 | bs_class = long_jump; | |
3447 | break; | |
3448 | case bp_longjmp_resume: | |
3449 | bs_class = long_resume; | |
3450 | break; | |
3451 | case bp_step_resume: | |
3452 | if (bs->stop) | |
3453 | { | |
3454 | bs_class = step_resume; | |
3455 | } | |
3456 | else | |
3457 | /* It is for the wrong frame. */ | |
3458 | bs_class = bp_nostop; | |
3459 | break; | |
c906108c SS |
3460 | case bp_watchpoint_scope: |
3461 | bs_class = bp_nostop; | |
3462 | break; | |
c5aa993b JM |
3463 | case bp_shlib_event: |
3464 | bs_class = shlib_event; | |
3465 | break; | |
c4093a6a | 3466 | case bp_thread_event: |
1900040c | 3467 | case bp_overlay_event: |
0fd8e87f | 3468 | case bp_longjmp_master: |
c4093a6a JM |
3469 | bs_class = bp_nostop; |
3470 | break; | |
ce78b96d | 3471 | case bp_catchpoint: |
c5aa993b JM |
3472 | if (bs->stop) |
3473 | { | |
3474 | if (bs->print) | |
3475 | bs_class = bp_noisy; | |
3476 | else | |
3477 | bs_class = bp_silent; | |
3478 | } | |
3479 | else | |
53a5351d JM |
3480 | /* There was a catchpoint, but we're not stopping. |
3481 | This requires no further action. */ | |
c5aa993b JM |
3482 | bs_class = no_effect; |
3483 | break; | |
c906108c | 3484 | case bp_call_dummy: |
53a5351d JM |
3485 | /* Make sure the action is stop (silent or noisy), |
3486 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
3487 | bs_class = bp_silent; |
3488 | retval.call_dummy = 1; | |
3489 | break; | |
1042e4c0 SS |
3490 | case bp_tracepoint: |
3491 | /* Tracepoint hits should not be reported back to GDB, and | |
3492 | if one got through somehow, it should have been filtered | |
3493 | out already. */ | |
3494 | internal_error (__FILE__, __LINE__, | |
3495 | _("bpstat_what: bp_tracepoint encountered")); | |
3496 | break; | |
c906108c | 3497 | } |
c5aa993b | 3498 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
3499 | } |
3500 | retval.main_action = current_action; | |
3501 | return retval; | |
3502 | } | |
3503 | ||
3504 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
3505 | without hardware support). This isn't related to a specific bpstat, | |
3506 | just to things like whether watchpoints are set. */ | |
3507 | ||
c5aa993b | 3508 | int |
fba45db2 | 3509 | bpstat_should_step (void) |
c906108c SS |
3510 | { |
3511 | struct breakpoint *b; | |
3512 | ALL_BREAKPOINTS (b) | |
717a8278 | 3513 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 3514 | return 1; |
c906108c SS |
3515 | return 0; |
3516 | } | |
3517 | ||
c906108c | 3518 | \f |
c5aa993b | 3519 | |
0d381245 VP |
3520 | static void print_breakpoint_location (struct breakpoint *b, |
3521 | struct bp_location *loc, | |
3522 | char *wrap_indent, | |
3523 | struct ui_stream *stb) | |
3524 | { | |
3525 | if (b->source_file) | |
3526 | { | |
3527 | struct symbol *sym | |
3528 | = find_pc_sect_function (loc->address, loc->section); | |
3529 | if (sym) | |
3530 | { | |
3531 | ui_out_text (uiout, "in "); | |
3532 | ui_out_field_string (uiout, "func", | |
3533 | SYMBOL_PRINT_NAME (sym)); | |
3534 | ui_out_wrap_hint (uiout, wrap_indent); | |
3535 | ui_out_text (uiout, " at "); | |
3536 | } | |
3537 | ui_out_field_string (uiout, "file", b->source_file); | |
3538 | ui_out_text (uiout, ":"); | |
3539 | ||
3540 | if (ui_out_is_mi_like_p (uiout)) | |
3541 | { | |
3542 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
3543 | char *fullname = symtab_to_fullname (sal.symtab); | |
3544 | ||
3545 | if (fullname) | |
3546 | ui_out_field_string (uiout, "fullname", fullname); | |
3547 | } | |
3548 | ||
3549 | ui_out_field_int (uiout, "line", b->line_number); | |
3550 | } | |
3551 | else if (!b->loc) | |
3552 | { | |
3553 | ui_out_field_string (uiout, "pending", b->addr_string); | |
3554 | } | |
3555 | else | |
3556 | { | |
3557 | print_address_symbolic (loc->address, stb->stream, demangle, ""); | |
3558 | ui_out_field_stream (uiout, "at", stb); | |
3559 | } | |
3560 | } | |
3561 | ||
c4093a6a | 3562 | /* Print B to gdb_stdout. */ |
c906108c | 3563 | static void |
0d381245 VP |
3564 | print_one_breakpoint_location (struct breakpoint *b, |
3565 | struct bp_location *loc, | |
3566 | int loc_number, | |
a6d9a66e UW |
3567 | struct bp_location **last_loc, |
3568 | int print_address_bits) | |
c906108c | 3569 | { |
52f0bd74 AC |
3570 | struct command_line *l; |
3571 | struct symbol *sym; | |
c4093a6a JM |
3572 | struct ep_type_description |
3573 | { | |
3574 | enum bptype type; | |
3575 | char *description; | |
3576 | }; | |
3577 | static struct ep_type_description bptypes[] = | |
c906108c | 3578 | { |
c5aa993b JM |
3579 | {bp_none, "?deleted?"}, |
3580 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3581 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3582 | {bp_until, "until"}, |
3583 | {bp_finish, "finish"}, | |
3584 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3585 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3586 | {bp_read_watchpoint, "read watchpoint"}, |
3587 | {bp_access_watchpoint, "acc watchpoint"}, | |
3588 | {bp_longjmp, "longjmp"}, | |
3589 | {bp_longjmp_resume, "longjmp resume"}, | |
3590 | {bp_step_resume, "step resume"}, | |
c5aa993b JM |
3591 | {bp_watchpoint_scope, "watchpoint scope"}, |
3592 | {bp_call_dummy, "call dummy"}, | |
3593 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3594 | {bp_thread_event, "thread events"}, |
1900040c | 3595 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 3596 | {bp_longjmp_master, "longjmp master"}, |
ce78b96d | 3597 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 3598 | {bp_tracepoint, "tracepoint"}, |
c5aa993b | 3599 | }; |
c4093a6a | 3600 | |
c2c6d25f | 3601 | static char bpenables[] = "nynny"; |
c906108c | 3602 | char wrap_indent[80]; |
8b93c638 JM |
3603 | struct ui_stream *stb = ui_out_stream_new (uiout); |
3604 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 3605 | struct cleanup *bkpt_chain; |
c906108c | 3606 | |
0d381245 VP |
3607 | int header_of_multiple = 0; |
3608 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
3609 | struct value_print_options opts; |
3610 | ||
3611 | get_user_print_options (&opts); | |
0d381245 VP |
3612 | |
3613 | gdb_assert (!loc || loc_number != 0); | |
3614 | /* See comment in print_one_breakpoint concerning | |
3615 | treatment of breakpoints with single disabled | |
3616 | location. */ | |
3617 | if (loc == NULL | |
3618 | && (b->loc != NULL | |
3619 | && (b->loc->next != NULL || !b->loc->enabled))) | |
3620 | header_of_multiple = 1; | |
3621 | if (loc == NULL) | |
3622 | loc = b->loc; | |
3623 | ||
c4093a6a | 3624 | annotate_record (); |
3b31d625 | 3625 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
3626 | |
3627 | /* 1 */ | |
3628 | annotate_field (0); | |
0d381245 VP |
3629 | if (part_of_multiple) |
3630 | { | |
3631 | char *formatted; | |
0c6773c1 | 3632 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
3633 | ui_out_field_string (uiout, "number", formatted); |
3634 | xfree (formatted); | |
3635 | } | |
3636 | else | |
3637 | { | |
3638 | ui_out_field_int (uiout, "number", b->number); | |
3639 | } | |
c4093a6a JM |
3640 | |
3641 | /* 2 */ | |
3642 | annotate_field (1); | |
0d381245 VP |
3643 | if (part_of_multiple) |
3644 | ui_out_field_skip (uiout, "type"); | |
3645 | else | |
3646 | { | |
3647 | if (((int) b->type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3648 | || ((int) b->type != bptypes[(int) b->type].type)) | |
3649 | internal_error (__FILE__, __LINE__, | |
3650 | _("bptypes table does not describe type #%d."), | |
3651 | (int) b->type); | |
3652 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); | |
3653 | } | |
c4093a6a JM |
3654 | |
3655 | /* 3 */ | |
3656 | annotate_field (2); | |
0d381245 VP |
3657 | if (part_of_multiple) |
3658 | ui_out_field_skip (uiout, "disp"); | |
3659 | else | |
2cec12e5 | 3660 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 3661 | |
c4093a6a JM |
3662 | |
3663 | /* 4 */ | |
3664 | annotate_field (3); | |
0d381245 | 3665 | if (part_of_multiple) |
54e52265 | 3666 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 3667 | else |
54e52265 VP |
3668 | ui_out_field_fmt (uiout, "enabled", "%c", |
3669 | bpenables[(int) b->enable_state]); | |
3670 | ui_out_spaces (uiout, 2); | |
0d381245 | 3671 | |
c4093a6a JM |
3672 | |
3673 | /* 5 and 6 */ | |
3674 | strcpy (wrap_indent, " "); | |
79a45b7d | 3675 | if (opts.addressprint) |
75ac9d7b | 3676 | { |
a6d9a66e | 3677 | if (print_address_bits <= 32) |
75ac9d7b MS |
3678 | strcat (wrap_indent, " "); |
3679 | else | |
3680 | strcat (wrap_indent, " "); | |
3681 | } | |
c906108c | 3682 | |
3086aeae | 3683 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 VP |
3684 | { |
3685 | /* Although the print_one can possibly print | |
3686 | all locations, calling it here is not likely | |
3687 | to get any nice result. So, make sure there's | |
3688 | just one location. */ | |
3689 | gdb_assert (b->loc == NULL || b->loc->next == NULL); | |
a6d9a66e | 3690 | b->ops->print_one (b, last_loc); |
0d381245 | 3691 | } |
3086aeae DJ |
3692 | else |
3693 | switch (b->type) | |
3694 | { | |
3695 | case bp_none: | |
3696 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 3697 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 3698 | break; |
c906108c | 3699 | |
3086aeae DJ |
3700 | case bp_watchpoint: |
3701 | case bp_hardware_watchpoint: | |
3702 | case bp_read_watchpoint: | |
3703 | case bp_access_watchpoint: | |
3704 | /* Field 4, the address, is omitted (which makes the columns | |
3705 | not line up too nicely with the headers, but the effect | |
3706 | is relatively readable). */ | |
79a45b7d | 3707 | if (opts.addressprint) |
3086aeae DJ |
3708 | ui_out_field_skip (uiout, "addr"); |
3709 | annotate_field (5); | |
fa8a61dc | 3710 | ui_out_field_string (uiout, "what", b->exp_string); |
3086aeae DJ |
3711 | break; |
3712 | ||
3086aeae DJ |
3713 | case bp_breakpoint: |
3714 | case bp_hardware_breakpoint: | |
3715 | case bp_until: | |
3716 | case bp_finish: | |
3717 | case bp_longjmp: | |
3718 | case bp_longjmp_resume: | |
3719 | case bp_step_resume: | |
3086aeae DJ |
3720 | case bp_watchpoint_scope: |
3721 | case bp_call_dummy: | |
3722 | case bp_shlib_event: | |
3723 | case bp_thread_event: | |
3724 | case bp_overlay_event: | |
0fd8e87f | 3725 | case bp_longjmp_master: |
1042e4c0 | 3726 | case bp_tracepoint: |
79a45b7d | 3727 | if (opts.addressprint) |
3086aeae DJ |
3728 | { |
3729 | annotate_field (4); | |
54e52265 | 3730 | if (header_of_multiple) |
0d381245 | 3731 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 3732 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 3733 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 3734 | else |
5af949e3 UW |
3735 | ui_out_field_core_addr (uiout, "addr", |
3736 | loc->gdbarch, loc->address); | |
3086aeae DJ |
3737 | } |
3738 | annotate_field (5); | |
0d381245 VP |
3739 | if (!header_of_multiple) |
3740 | print_breakpoint_location (b, loc, wrap_indent, stb); | |
3741 | if (b->loc) | |
a6d9a66e | 3742 | *last_loc = b->loc; |
3086aeae DJ |
3743 | break; |
3744 | } | |
c906108c | 3745 | |
4a306c9a | 3746 | if (!part_of_multiple) |
c4093a6a | 3747 | { |
4a306c9a JB |
3748 | if (b->thread != -1) |
3749 | { | |
3750 | /* FIXME: This seems to be redundant and lost here; see the | |
3751 | "stop only in" line a little further down. */ | |
3752 | ui_out_text (uiout, " thread "); | |
3753 | ui_out_field_int (uiout, "thread", b->thread); | |
3754 | } | |
3755 | else if (b->task != 0) | |
3756 | { | |
3757 | ui_out_text (uiout, " task "); | |
3758 | ui_out_field_int (uiout, "task", b->task); | |
3759 | } | |
c4093a6a JM |
3760 | } |
3761 | ||
8b93c638 | 3762 | ui_out_text (uiout, "\n"); |
c4093a6a | 3763 | |
0d381245 | 3764 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
3765 | { |
3766 | annotate_field (6); | |
8b93c638 | 3767 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
3768 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
3769 | the frame ID. */ | |
5af949e3 UW |
3770 | ui_out_field_core_addr (uiout, "frame", |
3771 | b->gdbarch, b->frame_id.stack_addr); | |
8b93c638 | 3772 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
3773 | } |
3774 | ||
0d381245 | 3775 | if (!part_of_multiple && b->cond_string && !ada_exception_catchpoint_p (b)) |
c4093a6a | 3776 | { |
f7f9143b JB |
3777 | /* We do not print the condition for Ada exception catchpoints |
3778 | because the condition is an internal implementation detail | |
3779 | that we do not want to expose to the user. */ | |
c4093a6a | 3780 | annotate_field (7); |
1042e4c0 SS |
3781 | if (b->type == bp_tracepoint) |
3782 | ui_out_text (uiout, "\ttrace only if "); | |
3783 | else | |
3784 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 JJ |
3785 | ui_out_field_string (uiout, "cond", b->cond_string); |
3786 | ui_out_text (uiout, "\n"); | |
3787 | } | |
3788 | ||
0d381245 | 3789 | if (!part_of_multiple && b->thread != -1) |
c4093a6a JM |
3790 | { |
3791 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3792 | ui_out_text (uiout, "\tstop only in thread "); |
3793 | ui_out_field_int (uiout, "thread", b->thread); | |
3794 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3795 | } |
3796 | ||
63c715c6 | 3797 | if (!part_of_multiple && b->hit_count) |
c4093a6a JM |
3798 | { |
3799 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3800 | if (ep_is_catchpoint (b)) |
3801 | ui_out_text (uiout, "\tcatchpoint"); | |
3802 | else | |
3803 | ui_out_text (uiout, "\tbreakpoint"); | |
3804 | ui_out_text (uiout, " already hit "); | |
3805 | ui_out_field_int (uiout, "times", b->hit_count); | |
3806 | if (b->hit_count == 1) | |
3807 | ui_out_text (uiout, " time\n"); | |
3808 | else | |
3809 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
3810 | } |
3811 | ||
fb40c209 AC |
3812 | /* Output the count also if it is zero, but only if this is |
3813 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 3814 | if (ui_out_is_mi_like_p (uiout)) |
63c715c6 | 3815 | if (!part_of_multiple && b->hit_count == 0) |
fb40c209 | 3816 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 3817 | |
0d381245 | 3818 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
3819 | { |
3820 | annotate_field (8); | |
8b93c638 JM |
3821 | ui_out_text (uiout, "\tignore next "); |
3822 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3823 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 3824 | } |
059fb39f PM |
3825 | |
3826 | l = b->commands; | |
3827 | if (!part_of_multiple && l) | |
c4093a6a | 3828 | { |
3b31d625 EZ |
3829 | struct cleanup *script_chain; |
3830 | ||
c4093a6a | 3831 | annotate_field (9); |
3b31d625 | 3832 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 3833 | print_command_lines (uiout, l, 4); |
3b31d625 | 3834 | do_cleanups (script_chain); |
c4093a6a | 3835 | } |
d24317b4 | 3836 | |
1042e4c0 SS |
3837 | if (!part_of_multiple && b->pass_count) |
3838 | { | |
3839 | annotate_field (10); | |
3840 | ui_out_text (uiout, "\tpass count "); | |
3841 | ui_out_field_int (uiout, "pass", b->pass_count); | |
3842 | ui_out_text (uiout, " \n"); | |
3843 | } | |
3844 | ||
3845 | if (!part_of_multiple && b->step_count) | |
3846 | { | |
3847 | annotate_field (11); | |
3848 | ui_out_text (uiout, "\tstep count "); | |
3849 | ui_out_field_int (uiout, "step", b->step_count); | |
3850 | ui_out_text (uiout, " \n"); | |
3851 | } | |
3852 | ||
3853 | if (!part_of_multiple && b->actions) | |
3854 | { | |
3855 | struct action_line *action; | |
3856 | annotate_field (12); | |
3857 | for (action = b->actions; action; action = action->next) | |
3858 | { | |
3859 | ui_out_text (uiout, " A\t"); | |
3860 | ui_out_text (uiout, action->action); | |
3861 | ui_out_text (uiout, "\n"); | |
3862 | } | |
3863 | } | |
3864 | ||
d24317b4 VP |
3865 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
3866 | { | |
3867 | if (b->addr_string) | |
3868 | ui_out_field_string (uiout, "original-location", b->addr_string); | |
3869 | else if (b->exp_string) | |
3870 | ui_out_field_string (uiout, "original-location", b->exp_string); | |
3871 | } | |
3872 | ||
3b31d625 | 3873 | do_cleanups (bkpt_chain); |
8b93c638 | 3874 | do_cleanups (old_chain); |
c4093a6a | 3875 | } |
c5aa993b | 3876 | |
0d381245 VP |
3877 | static void |
3878 | print_one_breakpoint (struct breakpoint *b, | |
a6d9a66e | 3879 | struct bp_location **last_loc, int print_address_bits) |
0d381245 | 3880 | { |
a6d9a66e | 3881 | print_one_breakpoint_location (b, NULL, 0, last_loc, print_address_bits); |
0d381245 VP |
3882 | |
3883 | /* If this breakpoint has custom print function, | |
3884 | it's already printed. Otherwise, print individual | |
3885 | locations, if any. */ | |
3886 | if (b->ops == NULL || b->ops->print_one == NULL) | |
3887 | { | |
3888 | /* If breakpoint has a single location that is | |
3889 | disabled, we print it as if it had | |
3890 | several locations, since otherwise it's hard to | |
3891 | represent "breakpoint enabled, location disabled" | |
a5606eee VP |
3892 | situation. |
3893 | Note that while hardware watchpoints have | |
3894 | several locations internally, that's no a property | |
3895 | exposed to user. */ | |
0d381245 | 3896 | if (b->loc |
a5606eee | 3897 | && !is_hardware_watchpoint (b) |
0d381245 | 3898 | && (b->loc->next || !b->loc->enabled) |
a5606eee | 3899 | && !ui_out_is_mi_like_p (uiout)) |
0d381245 VP |
3900 | { |
3901 | struct bp_location *loc; | |
3902 | int n = 1; | |
3903 | for (loc = b->loc; loc; loc = loc->next, ++n) | |
a6d9a66e UW |
3904 | print_one_breakpoint_location (b, loc, n, last_loc, |
3905 | print_address_bits); | |
0d381245 VP |
3906 | } |
3907 | } | |
3908 | } | |
3909 | ||
a6d9a66e UW |
3910 | static int |
3911 | breakpoint_address_bits (struct breakpoint *b) | |
3912 | { | |
3913 | int print_address_bits = 0; | |
3914 | struct bp_location *loc; | |
3915 | ||
3916 | for (loc = b->loc; loc; loc = loc->next) | |
3917 | { | |
3918 | int addr_bit = gdbarch_addr_bit (b->gdbarch); | |
3919 | if (addr_bit > print_address_bits) | |
3920 | print_address_bits = addr_bit; | |
3921 | } | |
3922 | ||
3923 | return print_address_bits; | |
3924 | } | |
0d381245 | 3925 | |
c4093a6a JM |
3926 | struct captured_breakpoint_query_args |
3927 | { | |
3928 | int bnum; | |
3929 | }; | |
c5aa993b | 3930 | |
c4093a6a | 3931 | static int |
2b65245e | 3932 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
3933 | { |
3934 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 3935 | struct breakpoint *b; |
a6d9a66e | 3936 | struct bp_location *dummy_loc = NULL; |
c4093a6a JM |
3937 | ALL_BREAKPOINTS (b) |
3938 | { | |
3939 | if (args->bnum == b->number) | |
c5aa993b | 3940 | { |
a6d9a66e UW |
3941 | int print_address_bits = breakpoint_address_bits (b); |
3942 | print_one_breakpoint (b, &dummy_loc, print_address_bits); | |
c4093a6a | 3943 | return GDB_RC_OK; |
c5aa993b | 3944 | } |
c4093a6a JM |
3945 | } |
3946 | return GDB_RC_NONE; | |
3947 | } | |
c5aa993b | 3948 | |
c4093a6a | 3949 | enum gdb_rc |
ce43223b | 3950 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, char **error_message) |
c4093a6a JM |
3951 | { |
3952 | struct captured_breakpoint_query_args args; | |
3953 | args.bnum = bnum; | |
3954 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3955 | an error. */ | |
b0b13bb4 DJ |
3956 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
3957 | error_message, RETURN_MASK_ALL) < 0) | |
3958 | return GDB_RC_FAIL; | |
3959 | else | |
3960 | return GDB_RC_OK; | |
c4093a6a | 3961 | } |
c5aa993b | 3962 | |
7f3b0473 AC |
3963 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
3964 | catchpoints, et.al.). */ | |
3965 | ||
3966 | static int | |
3967 | user_settable_breakpoint (const struct breakpoint *b) | |
3968 | { | |
3969 | return (b->type == bp_breakpoint | |
ce78b96d | 3970 | || b->type == bp_catchpoint |
7f3b0473 | 3971 | || b->type == bp_hardware_breakpoint |
1042e4c0 | 3972 | || b->type == bp_tracepoint |
7f3b0473 AC |
3973 | || b->type == bp_watchpoint |
3974 | || b->type == bp_read_watchpoint | |
3975 | || b->type == bp_access_watchpoint | |
3976 | || b->type == bp_hardware_watchpoint); | |
3977 | } | |
3978 | ||
3979 | /* Print information on user settable breakpoint (watchpoint, etc) | |
3980 | number BNUM. If BNUM is -1 print all user settable breakpoints. | |
3981 | If ALLFLAG is non-zero, include non- user settable breakpoints. */ | |
c906108c | 3982 | |
c4093a6a | 3983 | static void |
fba45db2 | 3984 | breakpoint_1 (int bnum, int allflag) |
c4093a6a | 3985 | { |
52f0bd74 | 3986 | struct breakpoint *b; |
a6d9a66e | 3987 | struct bp_location *last_loc = NULL; |
7f3b0473 | 3988 | int nr_printable_breakpoints; |
3b31d625 | 3989 | struct cleanup *bkpttbl_chain; |
79a45b7d | 3990 | struct value_print_options opts; |
a6d9a66e | 3991 | int print_address_bits = 0; |
c4093a6a | 3992 | |
79a45b7d TT |
3993 | get_user_print_options (&opts); |
3994 | ||
a6d9a66e UW |
3995 | /* Compute the number of rows in the table, as well as the |
3996 | size required for address fields. */ | |
7f3b0473 AC |
3997 | nr_printable_breakpoints = 0; |
3998 | ALL_BREAKPOINTS (b) | |
3999 | if (bnum == -1 | |
4000 | || bnum == b->number) | |
4001 | { | |
4002 | if (allflag || user_settable_breakpoint (b)) | |
a6d9a66e UW |
4003 | { |
4004 | int addr_bit = breakpoint_address_bits (b); | |
4005 | if (addr_bit > print_address_bits) | |
4006 | print_address_bits = addr_bit; | |
4007 | ||
4008 | nr_printable_breakpoints++; | |
4009 | } | |
7f3b0473 AC |
4010 | } |
4011 | ||
79a45b7d | 4012 | if (opts.addressprint) |
3b31d625 EZ |
4013 | bkpttbl_chain |
4014 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
4015 | "BreakpointTable"); | |
8b93c638 | 4016 | else |
3b31d625 EZ |
4017 | bkpttbl_chain |
4018 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
4019 | "BreakpointTable"); | |
8b93c638 | 4020 | |
7f3b0473 | 4021 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
4022 | annotate_breakpoints_headers (); |
4023 | if (nr_printable_breakpoints > 0) | |
4024 | annotate_field (0); | |
0d381245 | 4025 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
4026 | if (nr_printable_breakpoints > 0) |
4027 | annotate_field (1); | |
4028 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
4029 | if (nr_printable_breakpoints > 0) | |
4030 | annotate_field (2); | |
4031 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
4032 | if (nr_printable_breakpoints > 0) | |
4033 | annotate_field (3); | |
54e52265 | 4034 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 4035 | if (opts.addressprint) |
7f3b0473 | 4036 | { |
d7faa9e7 AC |
4037 | if (nr_printable_breakpoints > 0) |
4038 | annotate_field (4); | |
a6d9a66e | 4039 | if (print_address_bits <= 32) |
b25959ec | 4040 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 4041 | else |
b25959ec | 4042 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 4043 | } |
d7faa9e7 AC |
4044 | if (nr_printable_breakpoints > 0) |
4045 | annotate_field (5); | |
4046 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
4047 | ui_out_table_body (uiout); | |
4048 | if (nr_printable_breakpoints > 0) | |
4049 | annotate_breakpoints_table (); | |
7f3b0473 | 4050 | |
c4093a6a JM |
4051 | ALL_BREAKPOINTS (b) |
4052 | if (bnum == -1 | |
4053 | || bnum == b->number) | |
4054 | { | |
4055 | /* We only print out user settable breakpoints unless the | |
4056 | allflag is set. */ | |
7f3b0473 | 4057 | if (allflag || user_settable_breakpoint (b)) |
a6d9a66e | 4058 | print_one_breakpoint (b, &last_loc, print_address_bits); |
c4093a6a JM |
4059 | } |
4060 | ||
3b31d625 | 4061 | do_cleanups (bkpttbl_chain); |
698384cd | 4062 | |
7f3b0473 | 4063 | if (nr_printable_breakpoints == 0) |
c906108c | 4064 | { |
8b93c638 JM |
4065 | if (bnum == -1) |
4066 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
4067 | else | |
4068 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
4069 | bnum); | |
c906108c SS |
4070 | } |
4071 | else | |
c4093a6a | 4072 | { |
a6d9a66e UW |
4073 | if (last_loc && !server_command) |
4074 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 4075 | } |
c906108c | 4076 | |
c4093a6a JM |
4077 | /* FIXME? Should this be moved up so that it is only called when |
4078 | there have been breakpoints? */ | |
c906108c SS |
4079 | annotate_breakpoints_table_end (); |
4080 | } | |
4081 | ||
c906108c | 4082 | static void |
fba45db2 | 4083 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
4084 | { |
4085 | int bnum = -1; | |
4086 | ||
4087 | if (bnum_exp) | |
bb518678 | 4088 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
4089 | |
4090 | breakpoint_1 (bnum, 0); | |
4091 | } | |
4092 | ||
7a292a7a | 4093 | static void |
fba45db2 | 4094 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
4095 | { |
4096 | int bnum = -1; | |
4097 | ||
4098 | if (bnum_exp) | |
bb518678 | 4099 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
4100 | |
4101 | breakpoint_1 (bnum, 1); | |
4102 | } | |
4103 | ||
0d381245 | 4104 | static int |
714835d5 UW |
4105 | breakpoint_has_pc (struct breakpoint *b, |
4106 | CORE_ADDR pc, struct obj_section *section) | |
0d381245 VP |
4107 | { |
4108 | struct bp_location *bl = b->loc; | |
4109 | for (; bl; bl = bl->next) | |
4110 | { | |
4111 | if (bl->address == pc | |
4112 | && (!overlay_debugging || bl->section == section)) | |
4113 | return 1; | |
4114 | } | |
4115 | return 0; | |
4116 | } | |
4117 | ||
c906108c SS |
4118 | /* Print a message describing any breakpoints set at PC. */ |
4119 | ||
4120 | static void | |
5af949e3 UW |
4121 | describe_other_breakpoints (struct gdbarch *gdbarch, CORE_ADDR pc, |
4122 | struct obj_section *section, int thread) | |
c906108c | 4123 | { |
52f0bd74 AC |
4124 | int others = 0; |
4125 | struct breakpoint *b; | |
c906108c SS |
4126 | |
4127 | ALL_BREAKPOINTS (b) | |
0d381245 | 4128 | others += breakpoint_has_pc (b, pc, section); |
c906108c SS |
4129 | if (others > 0) |
4130 | { | |
a3f17187 AC |
4131 | if (others == 1) |
4132 | printf_filtered (_("Note: breakpoint ")); | |
4133 | else /* if (others == ???) */ | |
4134 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 4135 | ALL_BREAKPOINTS (b) |
0d381245 VP |
4136 | if (breakpoint_has_pc (b, pc, section)) |
4137 | { | |
4138 | others--; | |
4139 | printf_filtered ("%d", b->number); | |
4140 | if (b->thread == -1 && thread != -1) | |
4141 | printf_filtered (" (all threads)"); | |
4142 | else if (b->thread != -1) | |
4143 | printf_filtered (" (thread %d)", b->thread); | |
4144 | printf_filtered ("%s%s ", | |
059fb39f | 4145 | ((b->enable_state == bp_disabled |
8bea4e01 UW |
4146 | || b->enable_state == bp_call_disabled |
4147 | || b->enable_state == bp_startup_disabled) | |
0d381245 VP |
4148 | ? " (disabled)" |
4149 | : b->enable_state == bp_permanent | |
4150 | ? " (permanent)" | |
4151 | : ""), | |
4152 | (others > 1) ? "," | |
4153 | : ((others == 1) ? " and" : "")); | |
4154 | } | |
a3f17187 | 4155 | printf_filtered (_("also set at pc ")); |
5af949e3 | 4156 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
4157 | printf_filtered (".\n"); |
4158 | } | |
4159 | } | |
4160 | \f | |
4161 | /* Set the default place to put a breakpoint | |
4162 | for the `break' command with no arguments. */ | |
4163 | ||
4164 | void | |
fba45db2 KB |
4165 | set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, |
4166 | int line) | |
c906108c SS |
4167 | { |
4168 | default_breakpoint_valid = valid; | |
4169 | default_breakpoint_address = addr; | |
4170 | default_breakpoint_symtab = symtab; | |
4171 | default_breakpoint_line = line; | |
4172 | } | |
4173 | ||
e4f237da KB |
4174 | /* Return true iff it is meaningful to use the address member of |
4175 | BPT. For some breakpoint types, the address member is irrelevant | |
4176 | and it makes no sense to attempt to compare it to other addresses | |
4177 | (or use it for any other purpose either). | |
4178 | ||
4179 | More specifically, each of the following breakpoint types will always | |
4180 | have a zero valued address and we don't want check_duplicates() to mark | |
4181 | breakpoints of any of these types to be a duplicate of an actual | |
4182 | breakpoint at address zero: | |
4183 | ||
4184 | bp_watchpoint | |
4185 | bp_hardware_watchpoint | |
4186 | bp_read_watchpoint | |
4187 | bp_access_watchpoint | |
fe798b75 | 4188 | bp_catchpoint */ |
e4f237da KB |
4189 | |
4190 | static int | |
4191 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
4192 | { | |
4193 | enum bptype type = bpt->type; | |
4194 | ||
4195 | return (type != bp_watchpoint | |
4196 | && type != bp_hardware_watchpoint | |
4197 | && type != bp_read_watchpoint | |
4198 | && type != bp_access_watchpoint | |
fe798b75 | 4199 | && type != bp_catchpoint); |
e4f237da KB |
4200 | } |
4201 | ||
9f60f21b | 4202 | /* Rescan breakpoints at the same address and section as BPT, |
c906108c | 4203 | marking the first one as "first" and any others as "duplicates". |
c2c6d25f | 4204 | This is so that the bpt instruction is only inserted once. |
9f60f21b JB |
4205 | If we have a permanent breakpoint at the same place as BPT, make |
4206 | that one the official one, and the rest as duplicates. */ | |
c906108c SS |
4207 | |
4208 | static void | |
714835d5 | 4209 | check_duplicates_for (CORE_ADDR address, struct obj_section *section) |
c906108c | 4210 | { |
075f6582 | 4211 | struct bp_location *b; |
52f0bd74 | 4212 | int count = 0; |
075f6582 | 4213 | struct bp_location *perm_bp = 0; |
c906108c | 4214 | |
075f6582 DJ |
4215 | ALL_BP_LOCATIONS (b) |
4216 | if (b->owner->enable_state != bp_disabled | |
075f6582 | 4217 | && b->owner->enable_state != bp_call_disabled |
8bea4e01 | 4218 | && b->owner->enable_state != bp_startup_disabled |
0d381245 VP |
4219 | && b->enabled |
4220 | && !b->shlib_disabled | |
075f6582 DJ |
4221 | && b->address == address /* address / overlay match */ |
4222 | && (!overlay_debugging || b->section == section) | |
4223 | && breakpoint_address_is_meaningful (b->owner)) | |
c5aa993b | 4224 | { |
c2c6d25f | 4225 | /* Have we found a permanent breakpoint? */ |
075f6582 | 4226 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
4227 | { |
4228 | perm_bp = b; | |
4229 | break; | |
4230 | } | |
4231 | ||
c5aa993b | 4232 | count++; |
075f6582 | 4233 | b->duplicate = count > 1; |
c5aa993b | 4234 | } |
c2c6d25f JM |
4235 | |
4236 | /* If we found a permanent breakpoint at this address, go over the | |
aae64587 PA |
4237 | list again and declare all the other breakpoints there (except |
4238 | other permanent breakpoints) to be the duplicates. */ | |
c2c6d25f JM |
4239 | if (perm_bp) |
4240 | { | |
075f6582 | 4241 | perm_bp->duplicate = 0; |
c2c6d25f JM |
4242 | |
4243 | /* Permanent breakpoint should always be inserted. */ | |
075f6582 | 4244 | if (! perm_bp->inserted) |
8e65ff28 | 4245 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 AC |
4246 | _("allegedly permanent breakpoint is not " |
4247 | "actually inserted")); | |
c2c6d25f | 4248 | |
075f6582 | 4249 | ALL_BP_LOCATIONS (b) |
c2c6d25f JM |
4250 | if (b != perm_bp) |
4251 | { | |
aae64587 PA |
4252 | if (b->owner->enable_state != bp_permanent |
4253 | && b->owner->enable_state != bp_disabled | |
075f6582 | 4254 | && b->owner->enable_state != bp_call_disabled |
8bea4e01 | 4255 | && b->owner->enable_state != bp_startup_disabled |
0d381245 | 4256 | && b->enabled && !b->shlib_disabled |
075f6582 DJ |
4257 | && b->address == address /* address / overlay match */ |
4258 | && (!overlay_debugging || b->section == section) | |
4259 | && breakpoint_address_is_meaningful (b->owner)) | |
4260 | { | |
4261 | if (b->inserted) | |
4262 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 AC |
4263 | _("another breakpoint was inserted on top of " |
4264 | "a permanent breakpoint")); | |
075f6582 DJ |
4265 | |
4266 | b->duplicate = 1; | |
4267 | } | |
c2c6d25f JM |
4268 | } |
4269 | } | |
c906108c SS |
4270 | } |
4271 | ||
0d381245 VP |
4272 | static void |
4273 | check_duplicates (struct breakpoint *bpt) | |
4274 | { | |
4275 | struct bp_location *bl = bpt->loc; | |
4276 | ||
4277 | if (! breakpoint_address_is_meaningful (bpt)) | |
4278 | return; | |
4279 | ||
4280 | for (; bl; bl = bl->next) | |
4281 | check_duplicates_for (bl->address, bl->section); | |
4282 | } | |
4283 | ||
76897487 KB |
4284 | static void |
4285 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
4286 | int bnum, int have_bnum) | |
4287 | { | |
4288 | char astr1[40]; | |
4289 | char astr2[40]; | |
4290 | ||
bb599908 PH |
4291 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
4292 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 4293 | if (have_bnum) |
8a3fe4f8 | 4294 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
4295 | bnum, astr1, astr2); |
4296 | else | |
8a3fe4f8 | 4297 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
4298 | } |
4299 | ||
4300 | /* Adjust a breakpoint's address to account for architectural constraints | |
4301 | on breakpoint placement. Return the adjusted address. Note: Very | |
4302 | few targets require this kind of adjustment. For most targets, | |
4303 | this function is simply the identity function. */ | |
4304 | ||
4305 | static CORE_ADDR | |
a6d9a66e UW |
4306 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
4307 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 4308 | { |
a6d9a66e | 4309 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
4310 | { |
4311 | /* Very few targets need any kind of breakpoint adjustment. */ | |
4312 | return bpaddr; | |
4313 | } | |
88f7da05 KB |
4314 | else if (bptype == bp_watchpoint |
4315 | || bptype == bp_hardware_watchpoint | |
4316 | || bptype == bp_read_watchpoint | |
4317 | || bptype == bp_access_watchpoint | |
fe798b75 | 4318 | || bptype == bp_catchpoint) |
88f7da05 KB |
4319 | { |
4320 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
4321 | have their addresses modified. */ | |
4322 | return bpaddr; | |
4323 | } | |
76897487 KB |
4324 | else |
4325 | { | |
4326 | CORE_ADDR adjusted_bpaddr; | |
4327 | ||
4328 | /* Some targets have architectural constraints on the placement | |
4329 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 4330 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
4331 | |
4332 | /* An adjusted breakpoint address can significantly alter | |
4333 | a user's expectations. Print a warning if an adjustment | |
4334 | is required. */ | |
4335 | if (adjusted_bpaddr != bpaddr) | |
4336 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
4337 | ||
4338 | return adjusted_bpaddr; | |
4339 | } | |
4340 | } | |
4341 | ||
7cc221ef DJ |
4342 | /* Allocate a struct bp_location. */ |
4343 | ||
26bb91f3 | 4344 | static struct bp_location * |
39d61571 | 4345 | allocate_bp_location (struct breakpoint *bpt) |
7cc221ef DJ |
4346 | { |
4347 | struct bp_location *loc, *loc_p; | |
4348 | ||
4349 | loc = xmalloc (sizeof (struct bp_location)); | |
4350 | memset (loc, 0, sizeof (*loc)); | |
4351 | ||
e049a4b5 | 4352 | loc->owner = bpt; |
511a6cd4 | 4353 | loc->cond = NULL; |
0d381245 VP |
4354 | loc->shlib_disabled = 0; |
4355 | loc->enabled = 1; | |
e049a4b5 | 4356 | |
39d61571 | 4357 | switch (bpt->type) |
e049a4b5 DJ |
4358 | { |
4359 | case bp_breakpoint: | |
1042e4c0 | 4360 | case bp_tracepoint: |
e049a4b5 DJ |
4361 | case bp_until: |
4362 | case bp_finish: | |
4363 | case bp_longjmp: | |
4364 | case bp_longjmp_resume: | |
4365 | case bp_step_resume: | |
e049a4b5 DJ |
4366 | case bp_watchpoint_scope: |
4367 | case bp_call_dummy: | |
4368 | case bp_shlib_event: | |
4369 | case bp_thread_event: | |
4370 | case bp_overlay_event: | |
0fd8e87f | 4371 | case bp_longjmp_master: |
e049a4b5 DJ |
4372 | loc->loc_type = bp_loc_software_breakpoint; |
4373 | break; | |
4374 | case bp_hardware_breakpoint: | |
4375 | loc->loc_type = bp_loc_hardware_breakpoint; | |
4376 | break; | |
4377 | case bp_hardware_watchpoint: | |
4378 | case bp_read_watchpoint: | |
4379 | case bp_access_watchpoint: | |
4380 | loc->loc_type = bp_loc_hardware_watchpoint; | |
4381 | break; | |
4382 | case bp_watchpoint: | |
ce78b96d | 4383 | case bp_catchpoint: |
e049a4b5 DJ |
4384 | loc->loc_type = bp_loc_other; |
4385 | break; | |
4386 | default: | |
e2e0b3e5 | 4387 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
4388 | } |
4389 | ||
7cc221ef DJ |
4390 | return loc; |
4391 | } | |
4392 | ||
fe3f5fa8 VP |
4393 | static void free_bp_location (struct bp_location *loc) |
4394 | { | |
4395 | if (loc->cond) | |
4396 | xfree (loc->cond); | |
74960c60 VP |
4397 | |
4398 | if (loc->function_name) | |
4399 | xfree (loc->function_name); | |
4400 | ||
fe3f5fa8 VP |
4401 | xfree (loc); |
4402 | } | |
4403 | ||
0d381245 VP |
4404 | /* Helper to set_raw_breakpoint below. Creates a breakpoint |
4405 | that has type BPTYPE and has no locations as yet. */ | |
63c252f8 | 4406 | /* This function is used in gdbtk sources and thus can not be made static. */ |
c906108c | 4407 | |
c40e75cd | 4408 | static struct breakpoint * |
a6d9a66e UW |
4409 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, |
4410 | enum bptype bptype) | |
c906108c | 4411 | { |
52f0bd74 | 4412 | struct breakpoint *b, *b1; |
c906108c SS |
4413 | |
4414 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4415 | memset (b, 0, sizeof (*b)); | |
2219d63c | 4416 | |
4d28f7a8 | 4417 | b->type = bptype; |
a6d9a66e | 4418 | b->gdbarch = gdbarch; |
c906108c SS |
4419 | b->language = current_language->la_language; |
4420 | b->input_radix = input_radix; | |
4421 | b->thread = -1; | |
b5de0fa7 | 4422 | b->enable_state = bp_enabled; |
c906108c SS |
4423 | b->next = 0; |
4424 | b->silent = 0; | |
4425 | b->ignore_count = 0; | |
4426 | b->commands = NULL; | |
818dd999 | 4427 | b->frame_id = null_frame_id; |
3a3e9ee3 | 4428 | b->forked_inferior_pid = null_ptid; |
c906108c | 4429 | b->exec_pathname = NULL; |
3086aeae | 4430 | b->ops = NULL; |
0d381245 | 4431 | b->condition_not_parsed = 0; |
c906108c SS |
4432 | |
4433 | /* Add this breakpoint to the end of the chain | |
4434 | so that a list of breakpoints will come out in order | |
4435 | of increasing numbers. */ | |
4436 | ||
4437 | b1 = breakpoint_chain; | |
4438 | if (b1 == 0) | |
4439 | breakpoint_chain = b; | |
4440 | else | |
4441 | { | |
4442 | while (b1->next) | |
4443 | b1 = b1->next; | |
4444 | b1->next = b; | |
4445 | } | |
0d381245 VP |
4446 | return b; |
4447 | } | |
4448 | ||
4449 | /* Initialize loc->function_name. */ | |
4450 | static void | |
4451 | set_breakpoint_location_function (struct bp_location *loc) | |
4452 | { | |
4453 | if (loc->owner->type == bp_breakpoint | |
1042e4c0 SS |
4454 | || loc->owner->type == bp_hardware_breakpoint |
4455 | || loc->owner->type == bp_tracepoint) | |
0d381245 VP |
4456 | { |
4457 | find_pc_partial_function (loc->address, &(loc->function_name), | |
4458 | NULL, NULL); | |
4459 | if (loc->function_name) | |
4460 | loc->function_name = xstrdup (loc->function_name); | |
4461 | } | |
4462 | } | |
4463 | ||
a6d9a66e UW |
4464 | /* Attempt to determine architecture of location identified by SAL. */ |
4465 | static struct gdbarch * | |
4466 | get_sal_arch (struct symtab_and_line sal) | |
4467 | { | |
4468 | if (sal.section) | |
4469 | return get_objfile_arch (sal.section->objfile); | |
4470 | if (sal.symtab) | |
4471 | return get_objfile_arch (sal.symtab->objfile); | |
4472 | ||
4473 | return NULL; | |
4474 | } | |
4475 | ||
0d381245 VP |
4476 | /* set_raw_breakpoint is a low level routine for allocating and |
4477 | partially initializing a breakpoint of type BPTYPE. The newly | |
4478 | created breakpoint's address, section, source file name, and line | |
4479 | number are provided by SAL. The newly created and partially | |
4480 | initialized breakpoint is added to the breakpoint chain and | |
4481 | is also returned as the value of this function. | |
4482 | ||
4483 | It is expected that the caller will complete the initialization of | |
4484 | the newly created breakpoint struct as well as output any status | |
4485 | information regarding the creation of a new breakpoint. In | |
4486 | particular, set_raw_breakpoint does NOT set the breakpoint | |
4487 | number! Care should be taken to not allow an error to occur | |
4488 | prior to completing the initialization of the breakpoint. If this | |
4489 | should happen, a bogus breakpoint will be left on the chain. */ | |
4490 | ||
63c252f8 | 4491 | struct breakpoint * |
a6d9a66e UW |
4492 | set_raw_breakpoint (struct gdbarch *gdbarch, |
4493 | struct symtab_and_line sal, enum bptype bptype) | |
0d381245 | 4494 | { |
a6d9a66e | 4495 | struct breakpoint *b = set_raw_breakpoint_without_location (gdbarch, bptype); |
0d381245 | 4496 | CORE_ADDR adjusted_address; |
a6d9a66e UW |
4497 | struct gdbarch *loc_gdbarch; |
4498 | ||
4499 | loc_gdbarch = get_sal_arch (sal); | |
4500 | if (!loc_gdbarch) | |
4501 | loc_gdbarch = b->gdbarch; | |
0d381245 VP |
4502 | |
4503 | /* Adjust the breakpoint's address prior to allocating a location. | |
4504 | Once we call allocate_bp_location(), that mostly uninitialized | |
4505 | location will be placed on the location chain. Adjustment of the | |
8defab1a | 4506 | breakpoint may cause target_read_memory() to be called and we do |
0d381245 VP |
4507 | not want its scan of the location chain to find a breakpoint and |
4508 | location that's only been partially initialized. */ | |
a6d9a66e | 4509 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, sal.pc, b->type); |
0d381245 | 4510 | |
39d61571 | 4511 | b->loc = allocate_bp_location (b); |
a6d9a66e | 4512 | b->loc->gdbarch = loc_gdbarch; |
0d381245 VP |
4513 | b->loc->requested_address = sal.pc; |
4514 | b->loc->address = adjusted_address; | |
4515 | ||
4516 | if (sal.symtab == NULL) | |
4517 | b->source_file = NULL; | |
4518 | else | |
1b36a34b | 4519 | b->source_file = xstrdup (sal.symtab->filename); |
0d381245 VP |
4520 | b->loc->section = sal.section; |
4521 | b->line_number = sal.line; | |
4522 | ||
4523 | set_breakpoint_location_function (b->loc); | |
c906108c | 4524 | |
c906108c SS |
4525 | breakpoints_changed (); |
4526 | ||
4527 | return b; | |
4528 | } | |
4529 | ||
c2c6d25f JM |
4530 | |
4531 | /* Note that the breakpoint object B describes a permanent breakpoint | |
4532 | instruction, hard-wired into the inferior's code. */ | |
4533 | void | |
4534 | make_breakpoint_permanent (struct breakpoint *b) | |
4535 | { | |
0d381245 | 4536 | struct bp_location *bl; |
b5de0fa7 | 4537 | b->enable_state = bp_permanent; |
c2c6d25f | 4538 | |
0d381245 VP |
4539 | /* By definition, permanent breakpoints are already present in the code. |
4540 | Mark all locations as inserted. For now, make_breakpoint_permanent | |
4541 | is called in just one place, so it's hard to say if it's reasonable | |
4542 | to have permanent breakpoint with multiple locations or not, | |
4543 | but it's easy to implmement. */ | |
4544 | for (bl = b->loc; bl; bl = bl->next) | |
4545 | bl->inserted = 1; | |
c2c6d25f JM |
4546 | } |
4547 | ||
53a5351d | 4548 | /* Call this routine when stepping and nexting to enable a breakpoint |
0fd8e87f | 4549 | if we do a longjmp() in THREAD. When we hit that breakpoint, call |
c906108c SS |
4550 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
4551 | ||
4552 | void | |
0fd8e87f | 4553 | set_longjmp_breakpoint (int thread) |
c906108c | 4554 | { |
0fd8e87f UW |
4555 | struct breakpoint *b, *temp; |
4556 | ||
4557 | /* To avoid having to rescan all objfile symbols at every step, | |
4558 | we maintain a list of continually-inserted but always disabled | |
4559 | longjmp "master" breakpoints. Here, we simply create momentary | |
4560 | clones of those and enable them for the requested thread. */ | |
4561 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4562 | if (b->type == bp_longjmp_master) | |
4563 | { | |
4564 | struct breakpoint *clone = clone_momentary_breakpoint (b); | |
4565 | clone->type = bp_longjmp; | |
4566 | clone->thread = thread; | |
4567 | } | |
c906108c SS |
4568 | } |
4569 | ||
611c83ae | 4570 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 4571 | void |
611c83ae | 4572 | delete_longjmp_breakpoint (int thread) |
c906108c | 4573 | { |
611c83ae | 4574 | struct breakpoint *b, *temp; |
c906108c | 4575 | |
611c83ae PA |
4576 | ALL_BREAKPOINTS_SAFE (b, temp) |
4577 | if (b->type == bp_longjmp) | |
4578 | { | |
4579 | if (b->thread == thread) | |
4580 | delete_breakpoint (b); | |
4581 | } | |
c906108c SS |
4582 | } |
4583 | ||
1900040c MS |
4584 | void |
4585 | enable_overlay_breakpoints (void) | |
4586 | { | |
52f0bd74 | 4587 | struct breakpoint *b; |
1900040c MS |
4588 | |
4589 | ALL_BREAKPOINTS (b) | |
4590 | if (b->type == bp_overlay_event) | |
4591 | { | |
4592 | b->enable_state = bp_enabled; | |
b60e7edf | 4593 | update_global_location_list (1); |
c02f5703 | 4594 | overlay_events_enabled = 1; |
1900040c MS |
4595 | } |
4596 | } | |
4597 | ||
4598 | void | |
4599 | disable_overlay_breakpoints (void) | |
4600 | { | |
52f0bd74 | 4601 | struct breakpoint *b; |
1900040c MS |
4602 | |
4603 | ALL_BREAKPOINTS (b) | |
4604 | if (b->type == bp_overlay_event) | |
4605 | { | |
4606 | b->enable_state = bp_disabled; | |
b60e7edf | 4607 | update_global_location_list (0); |
c02f5703 | 4608 | overlay_events_enabled = 0; |
1900040c MS |
4609 | } |
4610 | } | |
4611 | ||
c4093a6a | 4612 | struct breakpoint * |
a6d9a66e | 4613 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
4614 | { |
4615 | struct breakpoint *b; | |
c4093a6a | 4616 | |
a6d9a66e | 4617 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event); |
c4093a6a | 4618 | |
b5de0fa7 | 4619 | b->enable_state = bp_enabled; |
c4093a6a | 4620 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5af949e3 UW |
4621 | b->addr_string |
4622 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
c4093a6a | 4623 | |
b60e7edf | 4624 | update_global_location_list_nothrow (1); |
74960c60 | 4625 | |
c4093a6a JM |
4626 | return b; |
4627 | } | |
4628 | ||
4629 | void | |
4630 | remove_thread_event_breakpoints (void) | |
4631 | { | |
4632 | struct breakpoint *b, *temp; | |
4633 | ||
4634 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4635 | if (b->type == bp_thread_event) | |
4636 | delete_breakpoint (b); | |
4637 | } | |
4638 | ||
0101ce28 JJ |
4639 | struct captured_parse_breakpoint_args |
4640 | { | |
4641 | char **arg_p; | |
4642 | struct symtabs_and_lines *sals_p; | |
4643 | char ***addr_string_p; | |
4644 | int *not_found_ptr; | |
4645 | }; | |
4646 | ||
4647 | struct lang_and_radix | |
4648 | { | |
4649 | enum language lang; | |
4650 | int radix; | |
4651 | }; | |
4652 | ||
0101ce28 | 4653 | |
cae688ec JJ |
4654 | void |
4655 | remove_solib_event_breakpoints (void) | |
4656 | { | |
4657 | struct breakpoint *b, *temp; | |
4658 | ||
4659 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4660 | if (b->type == bp_shlib_event) | |
4661 | delete_breakpoint (b); | |
4662 | } | |
4663 | ||
4664 | struct breakpoint * | |
a6d9a66e | 4665 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
cae688ec JJ |
4666 | { |
4667 | struct breakpoint *b; | |
4668 | ||
a6d9a66e | 4669 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event); |
b60e7edf | 4670 | update_global_location_list_nothrow (1); |
cae688ec JJ |
4671 | return b; |
4672 | } | |
4673 | ||
4674 | /* Disable any breakpoints that are on code in shared libraries. Only | |
4675 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4676 | ||
4677 | void | |
cb851954 | 4678 | disable_breakpoints_in_shlibs (void) |
cae688ec | 4679 | { |
0d381245 | 4680 | struct bp_location *loc; |
cae688ec | 4681 | |
0d381245 | 4682 | ALL_BP_LOCATIONS (loc) |
cae688ec | 4683 | { |
0d381245 VP |
4684 | struct breakpoint *b = loc->owner; |
4685 | /* We apply the check to all breakpoints, including disabled | |
4686 | for those with loc->duplicate set. This is so that when breakpoint | |
4687 | becomes enabled, or the duplicate is removed, gdb will try to insert | |
4688 | all breakpoints. If we don't set shlib_disabled here, we'll try | |
4689 | to insert those breakpoints and fail. */ | |
1042e4c0 SS |
4690 | if (((b->type == bp_breakpoint) |
4691 | || (b->type == bp_hardware_breakpoint) | |
4692 | || (b->type == bp_tracepoint)) | |
0d381245 | 4693 | && !loc->shlib_disabled |
a77053c2 | 4694 | #ifdef PC_SOLIB |
0d381245 | 4695 | && PC_SOLIB (loc->address) |
a77053c2 | 4696 | #else |
f5c9a895 | 4697 | && solib_name_from_address (loc->address) |
a77053c2 MK |
4698 | #endif |
4699 | ) | |
0d381245 VP |
4700 | { |
4701 | loc->shlib_disabled = 1; | |
4702 | } | |
cae688ec JJ |
4703 | } |
4704 | } | |
4705 | ||
84acb35a JJ |
4706 | /* Disable any breakpoints that are in in an unloaded shared library. Only |
4707 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4708 | ||
75149521 | 4709 | static void |
84acb35a JJ |
4710 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
4711 | { | |
0d381245 | 4712 | struct bp_location *loc; |
84acb35a JJ |
4713 | int disabled_shlib_breaks = 0; |
4714 | ||
c86cf029 VP |
4715 | /* SunOS a.out shared libraries are always mapped, so do not |
4716 | disable breakpoints; they will only be reported as unloaded | |
4717 | through clear_solib when GDB discards its shared library | |
4718 | list. See clear_solib for more information. */ | |
4719 | if (exec_bfd != NULL | |
4720 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
4721 | return; | |
4722 | ||
0d381245 | 4723 | ALL_BP_LOCATIONS (loc) |
84acb35a | 4724 | { |
0d381245 VP |
4725 | struct breakpoint *b = loc->owner; |
4726 | if ((loc->loc_type == bp_loc_hardware_breakpoint | |
4727 | || loc->loc_type == bp_loc_software_breakpoint) | |
e2dd7057 PP |
4728 | && !loc->shlib_disabled |
4729 | && (b->type == bp_breakpoint || b->type == bp_hardware_breakpoint) | |
4730 | && solib_contains_address_p (solib, loc->address)) | |
84acb35a | 4731 | { |
e2dd7057 PP |
4732 | loc->shlib_disabled = 1; |
4733 | /* At this point, we cannot rely on remove_breakpoint | |
4734 | succeeding so we must mark the breakpoint as not inserted | |
4735 | to prevent future errors occurring in remove_breakpoints. */ | |
4736 | loc->inserted = 0; | |
4737 | if (!disabled_shlib_breaks) | |
4738 | { | |
4739 | target_terminal_ours_for_output (); | |
4740 | warning (_("Temporarily disabling breakpoints for unloaded shared library \"%s\""), | |
4741 | solib->so_name); | |
84acb35a | 4742 | } |
e2dd7057 | 4743 | disabled_shlib_breaks = 1; |
84acb35a JJ |
4744 | } |
4745 | } | |
84acb35a JJ |
4746 | } |
4747 | ||
ce78b96d JB |
4748 | /* FORK & VFORK catchpoints. */ |
4749 | ||
4750 | /* Implement the "insert" breakpoint_ops method for fork catchpoints. */ | |
4751 | ||
c906108c | 4752 | static void |
ce78b96d JB |
4753 | insert_catch_fork (struct breakpoint *b) |
4754 | { | |
4755 | target_insert_fork_catchpoint (PIDGET (inferior_ptid)); | |
4756 | } | |
4757 | ||
4758 | /* Implement the "remove" breakpoint_ops method for fork catchpoints. */ | |
4759 | ||
4760 | static int | |
4761 | remove_catch_fork (struct breakpoint *b) | |
4762 | { | |
4763 | return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); | |
4764 | } | |
4765 | ||
4766 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
4767 | catchpoints. */ | |
4768 | ||
4769 | static int | |
4770 | breakpoint_hit_catch_fork (struct breakpoint *b) | |
4771 | { | |
4772 | return inferior_has_forked (inferior_ptid, &b->forked_inferior_pid); | |
4773 | } | |
4774 | ||
4775 | /* Implement the "print_it" breakpoint_ops method for fork catchpoints. */ | |
4776 | ||
4777 | static enum print_stop_action | |
4778 | print_it_catch_fork (struct breakpoint *b) | |
4779 | { | |
4780 | annotate_catchpoint (b->number); | |
4781 | printf_filtered (_("\nCatchpoint %d (forked process %d), "), | |
4782 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
4783 | return PRINT_SRC_AND_LOC; | |
4784 | } | |
4785 | ||
4786 | /* Implement the "print_one" breakpoint_ops method for fork catchpoints. */ | |
4787 | ||
4788 | static void | |
a6d9a66e | 4789 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 4790 | { |
79a45b7d TT |
4791 | struct value_print_options opts; |
4792 | ||
4793 | get_user_print_options (&opts); | |
4794 | ||
ce78b96d JB |
4795 | /* Field 4, the address, is omitted (which makes the columns |
4796 | not line up too nicely with the headers, but the effect | |
4797 | is relatively readable). */ | |
79a45b7d | 4798 | if (opts.addressprint) |
ce78b96d JB |
4799 | ui_out_field_skip (uiout, "addr"); |
4800 | annotate_field (5); | |
4801 | ui_out_text (uiout, "fork"); | |
4802 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
4803 | { | |
4804 | ui_out_text (uiout, ", process "); | |
4805 | ui_out_field_int (uiout, "what", | |
4806 | ptid_get_pid (b->forked_inferior_pid)); | |
4807 | ui_out_spaces (uiout, 1); | |
4808 | } | |
4809 | } | |
4810 | ||
4811 | /* Implement the "print_mention" breakpoint_ops method for fork | |
4812 | catchpoints. */ | |
4813 | ||
4814 | static void | |
4815 | print_mention_catch_fork (struct breakpoint *b) | |
4816 | { | |
4817 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
4818 | } | |
4819 | ||
4820 | /* The breakpoint_ops structure to be used in fork catchpoints. */ | |
4821 | ||
4822 | static struct breakpoint_ops catch_fork_breakpoint_ops = | |
4823 | { | |
4824 | insert_catch_fork, | |
4825 | remove_catch_fork, | |
4826 | breakpoint_hit_catch_fork, | |
4827 | print_it_catch_fork, | |
4828 | print_one_catch_fork, | |
4829 | print_mention_catch_fork | |
4830 | }; | |
4831 | ||
4832 | /* Implement the "insert" breakpoint_ops method for vfork catchpoints. */ | |
4833 | ||
4834 | static void | |
4835 | insert_catch_vfork (struct breakpoint *b) | |
4836 | { | |
4837 | target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); | |
4838 | } | |
4839 | ||
4840 | /* Implement the "remove" breakpoint_ops method for vfork catchpoints. */ | |
4841 | ||
4842 | static int | |
4843 | remove_catch_vfork (struct breakpoint *b) | |
4844 | { | |
4845 | return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); | |
4846 | } | |
4847 | ||
4848 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
4849 | catchpoints. */ | |
4850 | ||
4851 | static int | |
4852 | breakpoint_hit_catch_vfork (struct breakpoint *b) | |
4853 | { | |
4854 | return inferior_has_vforked (inferior_ptid, &b->forked_inferior_pid); | |
4855 | } | |
4856 | ||
4857 | /* Implement the "print_it" breakpoint_ops method for vfork catchpoints. */ | |
4858 | ||
4859 | static enum print_stop_action | |
4860 | print_it_catch_vfork (struct breakpoint *b) | |
4861 | { | |
4862 | annotate_catchpoint (b->number); | |
4863 | printf_filtered (_("\nCatchpoint %d (vforked process %d), "), | |
4864 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
4865 | return PRINT_SRC_AND_LOC; | |
4866 | } | |
4867 | ||
4868 | /* Implement the "print_one" breakpoint_ops method for vfork catchpoints. */ | |
4869 | ||
4870 | static void | |
a6d9a66e | 4871 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 4872 | { |
79a45b7d TT |
4873 | struct value_print_options opts; |
4874 | ||
4875 | get_user_print_options (&opts); | |
ce78b96d JB |
4876 | /* Field 4, the address, is omitted (which makes the columns |
4877 | not line up too nicely with the headers, but the effect | |
4878 | is relatively readable). */ | |
79a45b7d | 4879 | if (opts.addressprint) |
ce78b96d JB |
4880 | ui_out_field_skip (uiout, "addr"); |
4881 | annotate_field (5); | |
4882 | ui_out_text (uiout, "vfork"); | |
4883 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
4884 | { | |
4885 | ui_out_text (uiout, ", process "); | |
4886 | ui_out_field_int (uiout, "what", | |
4887 | ptid_get_pid (b->forked_inferior_pid)); | |
4888 | ui_out_spaces (uiout, 1); | |
4889 | } | |
4890 | } | |
4891 | ||
4892 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
4893 | catchpoints. */ | |
4894 | ||
4895 | static void | |
4896 | print_mention_catch_vfork (struct breakpoint *b) | |
4897 | { | |
4898 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
4899 | } | |
4900 | ||
4901 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ | |
4902 | ||
4903 | static struct breakpoint_ops catch_vfork_breakpoint_ops = | |
4904 | { | |
4905 | insert_catch_vfork, | |
4906 | remove_catch_vfork, | |
4907 | breakpoint_hit_catch_vfork, | |
4908 | print_it_catch_vfork, | |
4909 | print_one_catch_vfork, | |
4910 | print_mention_catch_vfork | |
4911 | }; | |
4912 | ||
4913 | /* Create a new breakpoint of the bp_catchpoint kind and return it. | |
4914 | ||
4915 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
4916 | If COND_STRING is not NULL, then store it in the breakpoint. | |
4917 | OPS, if not NULL, is the breakpoint_ops structure associated | |
4918 | to the catchpoint. */ | |
4919 | ||
4920 | static struct breakpoint * | |
a6d9a66e UW |
4921 | create_catchpoint (struct gdbarch *gdbarch, int tempflag, |
4922 | char *cond_string, struct breakpoint_ops *ops) | |
c906108c | 4923 | { |
c5aa993b JM |
4924 | struct symtab_and_line sal; |
4925 | struct breakpoint *b; | |
c5aa993b | 4926 | |
fe39c653 | 4927 | init_sal (&sal); |
c906108c SS |
4928 | sal.pc = 0; |
4929 | sal.symtab = NULL; | |
4930 | sal.line = 0; | |
c5aa993b | 4931 | |
a6d9a66e | 4932 | b = set_raw_breakpoint (gdbarch, sal, bp_catchpoint); |
c906108c SS |
4933 | set_breakpoint_count (breakpoint_count + 1); |
4934 | b->number = breakpoint_count; | |
ce78b96d | 4935 | |
1b36a34b | 4936 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
ce78b96d | 4937 | b->thread = -1; |
c906108c | 4938 | b->addr_string = NULL; |
b5de0fa7 EZ |
4939 | b->enable_state = bp_enabled; |
4940 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
ce78b96d | 4941 | b->ops = ops; |
c5aa993b | 4942 | |
c906108c | 4943 | mention (b); |
ce78b96d | 4944 | update_global_location_list (1); |
c906108c | 4945 | |
ce78b96d | 4946 | return b; |
c906108c | 4947 | } |
c5aa993b | 4948 | |
9b70b993 | 4949 | static void |
a6d9a66e UW |
4950 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
4951 | int tempflag, char *cond_string, | |
ce78b96d | 4952 | struct breakpoint_ops *ops) |
c906108c | 4953 | { |
a6d9a66e UW |
4954 | struct breakpoint *b |
4955 | = create_catchpoint (gdbarch, tempflag, cond_string, ops); | |
ce78b96d JB |
4956 | |
4957 | /* FIXME: We should put this information in a breakpoint private data | |
4958 | area. */ | |
4959 | b->forked_inferior_pid = null_ptid; | |
c906108c SS |
4960 | } |
4961 | ||
fe798b75 JB |
4962 | /* Exec catchpoints. */ |
4963 | ||
9b70b993 | 4964 | static void |
fe798b75 | 4965 | insert_catch_exec (struct breakpoint *b) |
c906108c | 4966 | { |
fe798b75 JB |
4967 | target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
4968 | } | |
c906108c | 4969 | |
fe798b75 JB |
4970 | static int |
4971 | remove_catch_exec (struct breakpoint *b) | |
4972 | { | |
4973 | return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); | |
4974 | } | |
c906108c | 4975 | |
fe798b75 JB |
4976 | static int |
4977 | breakpoint_hit_catch_exec (struct breakpoint *b) | |
4978 | { | |
4979 | return inferior_has_execd (inferior_ptid, &b->exec_pathname); | |
4980 | } | |
c906108c | 4981 | |
fe798b75 JB |
4982 | static enum print_stop_action |
4983 | print_it_catch_exec (struct breakpoint *b) | |
4984 | { | |
4985 | annotate_catchpoint (b->number); | |
4986 | printf_filtered (_("\nCatchpoint %d (exec'd %s), "), b->number, | |
4987 | b->exec_pathname); | |
4988 | return PRINT_SRC_AND_LOC; | |
c906108c SS |
4989 | } |
4990 | ||
fe798b75 | 4991 | static void |
a6d9a66e | 4992 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 JB |
4993 | { |
4994 | struct value_print_options opts; | |
4995 | ||
4996 | get_user_print_options (&opts); | |
4997 | ||
4998 | /* Field 4, the address, is omitted (which makes the columns | |
4999 | not line up too nicely with the headers, but the effect | |
5000 | is relatively readable). */ | |
5001 | if (opts.addressprint) | |
5002 | ui_out_field_skip (uiout, "addr"); | |
5003 | annotate_field (5); | |
5004 | ui_out_text (uiout, "exec"); | |
5005 | if (b->exec_pathname != NULL) | |
5006 | { | |
5007 | ui_out_text (uiout, ", program \""); | |
5008 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
5009 | ui_out_text (uiout, "\" "); | |
5010 | } | |
5011 | } | |
5012 | ||
5013 | static void | |
5014 | print_mention_catch_exec (struct breakpoint *b) | |
5015 | { | |
5016 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
5017 | } | |
5018 | ||
5019 | static struct breakpoint_ops catch_exec_breakpoint_ops = | |
5020 | { | |
5021 | insert_catch_exec, | |
5022 | remove_catch_exec, | |
5023 | breakpoint_hit_catch_exec, | |
5024 | print_it_catch_exec, | |
5025 | print_one_catch_exec, | |
5026 | print_mention_catch_exec | |
5027 | }; | |
5028 | ||
c906108c | 5029 | static int |
fba45db2 | 5030 | hw_breakpoint_used_count (void) |
c906108c | 5031 | { |
52f0bd74 | 5032 | struct breakpoint *b; |
c906108c SS |
5033 | int i = 0; |
5034 | ||
5035 | ALL_BREAKPOINTS (b) | |
c5aa993b | 5036 | { |
d6b74ac4 | 5037 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
c5aa993b JM |
5038 | i++; |
5039 | } | |
c906108c SS |
5040 | |
5041 | return i; | |
5042 | } | |
5043 | ||
5044 | static int | |
fba45db2 | 5045 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 5046 | { |
52f0bd74 | 5047 | struct breakpoint *b; |
c906108c SS |
5048 | int i = 0; |
5049 | ||
5050 | *other_type_used = 0; | |
5051 | ALL_BREAKPOINTS (b) | |
c5aa993b | 5052 | { |
468d015d | 5053 | if (breakpoint_enabled (b)) |
c5aa993b JM |
5054 | { |
5055 | if (b->type == type) | |
5056 | i++; | |
059fb39f PM |
5057 | else if ((b->type == bp_hardware_watchpoint |
5058 | || b->type == bp_read_watchpoint | |
5059 | || b->type == bp_access_watchpoint)) | |
c5aa993b JM |
5060 | *other_type_used = 1; |
5061 | } | |
5062 | } | |
c906108c SS |
5063 | return i; |
5064 | } | |
5065 | ||
c906108c | 5066 | void |
fba45db2 | 5067 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 5068 | { |
c5aa993b | 5069 | struct breakpoint *b; |
c906108c SS |
5070 | |
5071 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
5072 | { |
5073 | if (((b->type == bp_watchpoint) | |
5074 | || (b->type == bp_hardware_watchpoint) | |
5075 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 5076 | || (b->type == bp_access_watchpoint)) |
468d015d | 5077 | && breakpoint_enabled (b)) |
c5aa993b | 5078 | { |
b5de0fa7 | 5079 | b->enable_state = bp_call_disabled; |
b60e7edf | 5080 | update_global_location_list (0); |
c5aa993b JM |
5081 | } |
5082 | } | |
c906108c SS |
5083 | } |
5084 | ||
5085 | void | |
fba45db2 | 5086 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 5087 | { |
c5aa993b | 5088 | struct breakpoint *b; |
c906108c SS |
5089 | |
5090 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
5091 | { |
5092 | if (((b->type == bp_watchpoint) | |
5093 | || (b->type == bp_hardware_watchpoint) | |
5094 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 5095 | || (b->type == bp_access_watchpoint)) |
b5de0fa7 | 5096 | && (b->enable_state == bp_call_disabled)) |
c5aa993b | 5097 | { |
b5de0fa7 | 5098 | b->enable_state = bp_enabled; |
b60e7edf | 5099 | update_global_location_list (1); |
c5aa993b JM |
5100 | } |
5101 | } | |
c906108c SS |
5102 | } |
5103 | ||
8bea4e01 UW |
5104 | void |
5105 | disable_breakpoints_before_startup (void) | |
5106 | { | |
5107 | struct breakpoint *b; | |
5108 | int found = 0; | |
5109 | ||
5110 | ALL_BREAKPOINTS (b) | |
5111 | { | |
5112 | if ((b->type == bp_breakpoint | |
5113 | || b->type == bp_hardware_breakpoint) | |
5114 | && breakpoint_enabled (b)) | |
5115 | { | |
5116 | b->enable_state = bp_startup_disabled; | |
5117 | found = 1; | |
5118 | } | |
5119 | } | |
5120 | ||
5121 | if (found) | |
5122 | update_global_location_list (0); | |
5123 | ||
5124 | executing_startup = 1; | |
5125 | } | |
5126 | ||
5127 | void | |
5128 | enable_breakpoints_after_startup (void) | |
5129 | { | |
5130 | struct breakpoint *b; | |
5131 | int found = 0; | |
5132 | ||
5133 | executing_startup = 0; | |
5134 | ||
5135 | ALL_BREAKPOINTS (b) | |
5136 | { | |
5137 | if ((b->type == bp_breakpoint | |
5138 | || b->type == bp_hardware_breakpoint) | |
5139 | && b->enable_state == bp_startup_disabled) | |
5140 | { | |
5141 | b->enable_state = bp_enabled; | |
5142 | found = 1; | |
5143 | } | |
5144 | } | |
5145 | ||
5146 | if (found) | |
5147 | breakpoint_re_set (); | |
5148 | } | |
5149 | ||
c906108c SS |
5150 | |
5151 | /* Set a breakpoint that will evaporate an end of command | |
5152 | at address specified by SAL. | |
5153 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
5154 | ||
5155 | struct breakpoint * | |
a6d9a66e UW |
5156 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
5157 | struct frame_id frame_id, enum bptype type) | |
c906108c | 5158 | { |
52f0bd74 | 5159 | struct breakpoint *b; |
edb3359d DJ |
5160 | |
5161 | /* If FRAME_ID is valid, it should be a real frame, not an inlined | |
5162 | one. */ | |
5163 | gdb_assert (!frame_id_inlined_p (frame_id)); | |
5164 | ||
a6d9a66e | 5165 | b = set_raw_breakpoint (gdbarch, sal, type); |
b5de0fa7 EZ |
5166 | b->enable_state = bp_enabled; |
5167 | b->disposition = disp_donttouch; | |
818dd999 | 5168 | b->frame_id = frame_id; |
c906108c SS |
5169 | |
5170 | /* If we're debugging a multi-threaded program, then we | |
5171 | want momentary breakpoints to be active in only a | |
5172 | single thread of control. */ | |
39f77062 KB |
5173 | if (in_thread_list (inferior_ptid)) |
5174 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 5175 | |
b60e7edf | 5176 | update_global_location_list_nothrow (1); |
74960c60 | 5177 | |
c906108c SS |
5178 | return b; |
5179 | } | |
611c83ae | 5180 | |
e58b0e63 PA |
5181 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
5182 | ORIG is NULL. */ | |
5183 | ||
5184 | struct breakpoint * | |
5185 | clone_momentary_breakpoint (struct breakpoint *orig) | |
5186 | { | |
5187 | struct breakpoint *copy; | |
5188 | ||
5189 | /* If there's nothing to clone, then return nothing. */ | |
5190 | if (orig == NULL) | |
5191 | return NULL; | |
5192 | ||
a6d9a66e | 5193 | copy = set_raw_breakpoint_without_location (orig->gdbarch, orig->type); |
e58b0e63 PA |
5194 | copy->loc = allocate_bp_location (copy); |
5195 | set_breakpoint_location_function (copy->loc); | |
5196 | ||
a6d9a66e | 5197 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
5198 | copy->loc->requested_address = orig->loc->requested_address; |
5199 | copy->loc->address = orig->loc->address; | |
5200 | copy->loc->section = orig->loc->section; | |
5201 | ||
5202 | if (orig->source_file == NULL) | |
5203 | copy->source_file = NULL; | |
5204 | else | |
5205 | copy->source_file = xstrdup (orig->source_file); | |
5206 | ||
5207 | copy->line_number = orig->line_number; | |
5208 | copy->frame_id = orig->frame_id; | |
5209 | copy->thread = orig->thread; | |
5210 | ||
5211 | copy->enable_state = bp_enabled; | |
5212 | copy->disposition = disp_donttouch; | |
5213 | copy->number = internal_breakpoint_number--; | |
5214 | ||
5215 | update_global_location_list_nothrow (0); | |
5216 | return copy; | |
5217 | } | |
5218 | ||
611c83ae | 5219 | struct breakpoint * |
a6d9a66e UW |
5220 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
5221 | enum bptype type) | |
611c83ae PA |
5222 | { |
5223 | struct symtab_and_line sal; | |
5224 | ||
5225 | sal = find_pc_line (pc, 0); | |
5226 | sal.pc = pc; | |
5227 | sal.section = find_pc_overlay (pc); | |
5228 | sal.explicit_pc = 1; | |
5229 | ||
a6d9a66e | 5230 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 5231 | } |
c906108c | 5232 | \f |
c5aa993b | 5233 | |
c906108c SS |
5234 | /* Tell the user we have just set a breakpoint B. */ |
5235 | ||
5236 | static void | |
fba45db2 | 5237 | mention (struct breakpoint *b) |
c906108c SS |
5238 | { |
5239 | int say_where = 0; | |
fa8a61dc | 5240 | struct cleanup *ui_out_chain; |
79a45b7d TT |
5241 | struct value_print_options opts; |
5242 | ||
5243 | get_user_print_options (&opts); | |
8b93c638 | 5244 | |
9a4105ab AC |
5245 | /* FIXME: This is misplaced; mention() is called by things (like |
5246 | hitting a watchpoint) other than breakpoint creation. It should | |
5247 | be possible to clean this up and at the same time replace the | |
7f4b89d1 | 5248 | random calls to breakpoint_changed with this hook. */ |
383f836e | 5249 | observer_notify_breakpoint_created (b->number); |
c906108c | 5250 | |
3086aeae DJ |
5251 | if (b->ops != NULL && b->ops->print_mention != NULL) |
5252 | b->ops->print_mention (b); | |
5253 | else | |
5254 | switch (b->type) | |
5255 | { | |
5256 | case bp_none: | |
a3f17187 | 5257 | printf_filtered (_("(apparently deleted?) Eventpoint %d: "), b->number); |
3086aeae DJ |
5258 | break; |
5259 | case bp_watchpoint: | |
5260 | ui_out_text (uiout, "Watchpoint "); | |
5261 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
5262 | ui_out_field_int (uiout, "number", b->number); | |
5263 | ui_out_text (uiout, ": "); | |
fa8a61dc | 5264 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
5265 | do_cleanups (ui_out_chain); |
5266 | break; | |
5267 | case bp_hardware_watchpoint: | |
5268 | ui_out_text (uiout, "Hardware watchpoint "); | |
5269 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
5270 | ui_out_field_int (uiout, "number", b->number); | |
5271 | ui_out_text (uiout, ": "); | |
fa8a61dc | 5272 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
5273 | do_cleanups (ui_out_chain); |
5274 | break; | |
5275 | case bp_read_watchpoint: | |
5276 | ui_out_text (uiout, "Hardware read watchpoint "); | |
5277 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
5278 | ui_out_field_int (uiout, "number", b->number); | |
5279 | ui_out_text (uiout, ": "); | |
fa8a61dc | 5280 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
5281 | do_cleanups (ui_out_chain); |
5282 | break; | |
5283 | case bp_access_watchpoint: | |
5284 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
5285 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
5286 | ui_out_field_int (uiout, "number", b->number); | |
5287 | ui_out_text (uiout, ": "); | |
fa8a61dc | 5288 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
5289 | do_cleanups (ui_out_chain); |
5290 | break; | |
5291 | case bp_breakpoint: | |
5292 | if (ui_out_is_mi_like_p (uiout)) | |
5293 | { | |
5294 | say_where = 0; | |
5295 | break; | |
5296 | } | |
2cec12e5 AR |
5297 | if (b->disposition == disp_del) |
5298 | printf_filtered (_("Temporary breakpoint")); | |
5299 | else | |
5300 | printf_filtered (_("Breakpoint")); | |
5301 | printf_filtered (_(" %d"), b->number); | |
3086aeae DJ |
5302 | say_where = 1; |
5303 | break; | |
5304 | case bp_hardware_breakpoint: | |
5305 | if (ui_out_is_mi_like_p (uiout)) | |
5306 | { | |
5307 | say_where = 0; | |
5308 | break; | |
5309 | } | |
a3f17187 | 5310 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); |
3086aeae DJ |
5311 | say_where = 1; |
5312 | break; | |
1042e4c0 SS |
5313 | case bp_tracepoint: |
5314 | if (ui_out_is_mi_like_p (uiout)) | |
5315 | { | |
5316 | say_where = 0; | |
5317 | break; | |
5318 | } | |
5319 | printf_filtered (_("Tracepoint")); | |
5320 | printf_filtered (_(" %d"), b->number); | |
5321 | say_where = 1; | |
5322 | break; | |
3086aeae DJ |
5323 | |
5324 | case bp_until: | |
5325 | case bp_finish: | |
5326 | case bp_longjmp: | |
5327 | case bp_longjmp_resume: | |
5328 | case bp_step_resume: | |
3086aeae DJ |
5329 | case bp_call_dummy: |
5330 | case bp_watchpoint_scope: | |
5331 | case bp_shlib_event: | |
5332 | case bp_thread_event: | |
5333 | case bp_overlay_event: | |
0fd8e87f | 5334 | case bp_longjmp_master: |
3086aeae DJ |
5335 | break; |
5336 | } | |
c906108c | 5337 | |
c906108c SS |
5338 | if (say_where) |
5339 | { | |
a3f17187 AC |
5340 | /* i18n: cagney/2005-02-11: Below needs to be merged into a |
5341 | single string. */ | |
0d381245 | 5342 | if (b->loc == NULL) |
c906108c | 5343 | { |
a3f17187 | 5344 | printf_filtered (_(" (%s) pending."), b->addr_string); |
0101ce28 JJ |
5345 | } |
5346 | else | |
5347 | { | |
79a45b7d | 5348 | if (opts.addressprint || b->source_file == NULL) |
0101ce28 JJ |
5349 | { |
5350 | printf_filtered (" at "); | |
5af949e3 UW |
5351 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), |
5352 | gdb_stdout); | |
0101ce28 JJ |
5353 | } |
5354 | if (b->source_file) | |
5355 | printf_filtered (": file %s, line %d.", | |
5356 | b->source_file, b->line_number); | |
0d381245 VP |
5357 | |
5358 | if (b->loc->next) | |
5359 | { | |
5360 | struct bp_location *loc = b->loc; | |
5361 | int n = 0; | |
5362 | for (; loc; loc = loc->next) | |
5363 | ++n; | |
5364 | printf_filtered (" (%d locations)", n); | |
5365 | } | |
5366 | ||
c906108c | 5367 | } |
c906108c | 5368 | } |
9dc5e2a9 | 5369 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 5370 | return; |
c906108c SS |
5371 | printf_filtered ("\n"); |
5372 | } | |
c906108c | 5373 | \f |
c5aa993b | 5374 | |
0d381245 | 5375 | static struct bp_location * |
39d61571 | 5376 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
5377 | const struct symtab_and_line *sal) |
5378 | { | |
5379 | struct bp_location *loc, **tmp; | |
5380 | ||
39d61571 | 5381 | loc = allocate_bp_location (b); |
0d381245 VP |
5382 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
5383 | ; | |
5384 | *tmp = loc; | |
a6d9a66e UW |
5385 | loc->gdbarch = get_sal_arch (*sal); |
5386 | if (!loc->gdbarch) | |
5387 | loc->gdbarch = b->gdbarch; | |
0d381245 | 5388 | loc->requested_address = sal->pc; |
a6d9a66e UW |
5389 | loc->address = adjust_breakpoint_address (loc->gdbarch, |
5390 | loc->requested_address, b->type); | |
0d381245 VP |
5391 | loc->section = sal->section; |
5392 | ||
5393 | set_breakpoint_location_function (loc); | |
5394 | return loc; | |
5395 | } | |
514f746b AR |
5396 | \f |
5397 | ||
5398 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
5399 | return 0 otherwise. */ | |
5400 | ||
5401 | static int | |
5402 | bp_loc_is_permanent (struct bp_location *loc) | |
5403 | { | |
5404 | int len; | |
5405 | CORE_ADDR addr; | |
5406 | const gdb_byte *brk; | |
5407 | gdb_byte *target_mem; | |
939c61fa JK |
5408 | struct cleanup *cleanup; |
5409 | int retval = 0; | |
514f746b AR |
5410 | |
5411 | gdb_assert (loc != NULL); | |
5412 | ||
5413 | addr = loc->address; | |
a6d9a66e | 5414 | brk = gdbarch_breakpoint_from_pc (loc->gdbarch, &addr, &len); |
514f746b | 5415 | |
939c61fa JK |
5416 | /* Software breakpoints unsupported? */ |
5417 | if (brk == NULL) | |
5418 | return 0; | |
5419 | ||
514f746b AR |
5420 | target_mem = alloca (len); |
5421 | ||
939c61fa JK |
5422 | /* Enable the automatic memory restoration from breakpoints while |
5423 | we read the memory. Otherwise we could say about our temporary | |
5424 | breakpoints they are permanent. */ | |
5425 | cleanup = make_show_memory_breakpoints_cleanup (0); | |
5426 | ||
514f746b AR |
5427 | if (target_read_memory (loc->address, target_mem, len) == 0 |
5428 | && memcmp (target_mem, brk, len) == 0) | |
939c61fa | 5429 | retval = 1; |
514f746b | 5430 | |
939c61fa JK |
5431 | do_cleanups (cleanup); |
5432 | ||
5433 | return retval; | |
514f746b AR |
5434 | } |
5435 | ||
5436 | ||
c3f6f71d | 5437 | |
018d34a4 VP |
5438 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
5439 | as textual description of the location, and COND_STRING | |
db107f19 | 5440 | as condition expression. */ |
018d34a4 VP |
5441 | |
5442 | static void | |
a6d9a66e UW |
5443 | create_breakpoint (struct gdbarch *gdbarch, |
5444 | struct symtabs_and_lines sals, char *addr_string, | |
018d34a4 VP |
5445 | char *cond_string, |
5446 | enum bptype type, enum bpdisp disposition, | |
4a306c9a | 5447 | int thread, int task, int ignore_count, |
41447f92 | 5448 | struct breakpoint_ops *ops, int from_tty, int enabled) |
018d34a4 | 5449 | { |
0d381245 VP |
5450 | struct breakpoint *b = NULL; |
5451 | int i; | |
018d34a4 VP |
5452 | |
5453 | if (type == bp_hardware_breakpoint) | |
5454 | { | |
5455 | int i = hw_breakpoint_used_count (); | |
5456 | int target_resources_ok = | |
d92524f1 | 5457 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
018d34a4 VP |
5458 | i + 1, 0); |
5459 | if (target_resources_ok == 0) | |
5460 | error (_("No hardware breakpoint support in the target.")); | |
5461 | else if (target_resources_ok < 0) | |
5462 | error (_("Hardware breakpoints used exceeds limit.")); | |
5463 | } | |
5464 | ||
0d381245 VP |
5465 | for (i = 0; i < sals.nelts; ++i) |
5466 | { | |
5467 | struct symtab_and_line sal = sals.sals[i]; | |
5468 | struct bp_location *loc; | |
5469 | ||
5470 | if (from_tty) | |
5af949e3 UW |
5471 | { |
5472 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
5473 | if (!loc_gdbarch) | |
5474 | loc_gdbarch = gdbarch; | |
5475 | ||
5476 | describe_other_breakpoints (loc_gdbarch, | |
5477 | sal.pc, sal.section, thread); | |
5478 | } | |
0d381245 VP |
5479 | |
5480 | if (i == 0) | |
5481 | { | |
a6d9a66e | 5482 | b = set_raw_breakpoint (gdbarch, sal, type); |
0d381245 VP |
5483 | set_breakpoint_count (breakpoint_count + 1); |
5484 | b->number = breakpoint_count; | |
5485 | b->thread = thread; | |
4a306c9a | 5486 | b->task = task; |
018d34a4 | 5487 | |
0d381245 VP |
5488 | b->cond_string = cond_string; |
5489 | b->ignore_count = ignore_count; | |
41447f92 | 5490 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 5491 | b->disposition = disposition; |
018d34a4 | 5492 | |
8bea4e01 UW |
5493 | if (enabled && executing_startup |
5494 | && (b->type == bp_breakpoint | |
5495 | || b->type == bp_hardware_breakpoint)) | |
5496 | b->enable_state = bp_startup_disabled; | |
5497 | ||
0d381245 VP |
5498 | loc = b->loc; |
5499 | } | |
5500 | else | |
018d34a4 | 5501 | { |
39d61571 | 5502 | loc = add_location_to_breakpoint (b, &sal); |
0d381245 VP |
5503 | } |
5504 | ||
514f746b AR |
5505 | if (bp_loc_is_permanent (loc)) |
5506 | make_breakpoint_permanent (b); | |
5507 | ||
0d381245 VP |
5508 | if (b->cond_string) |
5509 | { | |
5510 | char *arg = b->cond_string; | |
d32a6982 | 5511 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); |
0d381245 | 5512 | if (*arg) |
db107f19 | 5513 | error (_("Garbage %s follows condition"), arg); |
018d34a4 | 5514 | } |
0d381245 | 5515 | } |
018d34a4 VP |
5516 | |
5517 | if (addr_string) | |
5518 | b->addr_string = addr_string; | |
5519 | else | |
5520 | /* addr_string has to be used or breakpoint_re_set will delete | |
5521 | me. */ | |
5af949e3 UW |
5522 | b->addr_string |
5523 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
018d34a4 | 5524 | |
604133b5 | 5525 | b->ops = ops; |
018d34a4 VP |
5526 | mention (b); |
5527 | } | |
5528 | ||
ed0616c6 VP |
5529 | /* Remove element at INDEX_TO_REMOVE from SAL, shifting other |
5530 | elements to fill the void space. */ | |
2c0b251b PA |
5531 | static void |
5532 | remove_sal (struct symtabs_and_lines *sal, int index_to_remove) | |
ed0616c6 VP |
5533 | { |
5534 | int i = index_to_remove+1; | |
5535 | int last_index = sal->nelts-1; | |
5536 | ||
5537 | for (;i <= last_index; ++i) | |
5538 | sal->sals[i-1] = sal->sals[i]; | |
5539 | ||
5540 | --(sal->nelts); | |
5541 | } | |
5542 | ||
5543 | /* If appropriate, obtains all sals that correspond | |
5544 | to the same file and line as SAL. This is done | |
5545 | only if SAL does not have explicit PC and has | |
5546 | line and file information. If we got just a single | |
5547 | expanded sal, return the original. | |
5548 | ||
5549 | Otherwise, if SAL.explicit_line is not set, filter out | |
5550 | all sals for which the name of enclosing function | |
5551 | is different from SAL. This makes sure that if we have | |
5552 | breakpoint originally set in template instantiation, say | |
5553 | foo<int>(), we won't expand SAL to locations at the same | |
5554 | line in all existing instantiations of 'foo'. | |
5555 | ||
5556 | */ | |
2c0b251b | 5557 | static struct symtabs_and_lines |
ed0616c6 VP |
5558 | expand_line_sal_maybe (struct symtab_and_line sal) |
5559 | { | |
5560 | struct symtabs_and_lines expanded; | |
5561 | CORE_ADDR original_pc = sal.pc; | |
5562 | char *original_function = NULL; | |
5563 | int found; | |
5564 | int i; | |
5565 | ||
5566 | /* If we have explicit pc, don't expand. | |
5567 | If we have no line number, we can't expand. */ | |
5568 | if (sal.explicit_pc || sal.line == 0 || sal.symtab == NULL) | |
5569 | { | |
5570 | expanded.nelts = 1; | |
5571 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5572 | expanded.sals[0] = sal; | |
5573 | return expanded; | |
5574 | } | |
5575 | ||
5576 | sal.pc = 0; | |
5577 | find_pc_partial_function (original_pc, &original_function, NULL, NULL); | |
5578 | ||
5579 | expanded = expand_line_sal (sal); | |
5580 | if (expanded.nelts == 1) | |
5581 | { | |
5582 | /* We had one sal, we got one sal. Without futher | |
5583 | processing, just return the original sal. */ | |
5584 | xfree (expanded.sals); | |
5585 | expanded.nelts = 1; | |
5586 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5587 | sal.pc = original_pc; | |
5588 | expanded.sals[0] = sal; | |
5589 | return expanded; | |
5590 | } | |
5591 | ||
5592 | if (!sal.explicit_line) | |
5593 | { | |
5594 | CORE_ADDR func_addr, func_end; | |
5595 | for (i = 0; i < expanded.nelts; ++i) | |
5596 | { | |
5597 | CORE_ADDR pc = expanded.sals[i].pc; | |
5598 | char *this_function; | |
5599 | if (find_pc_partial_function (pc, &this_function, | |
5600 | &func_addr, &func_end)) | |
5601 | { | |
059fb39f PM |
5602 | if (this_function |
5603 | && strcmp (this_function, original_function) != 0) | |
ed0616c6 VP |
5604 | { |
5605 | remove_sal (&expanded, i); | |
5606 | --i; | |
5607 | } | |
5608 | else if (func_addr == pc) | |
5609 | { | |
5610 | /* We're at beginning of a function, and should | |
5611 | skip prologue. */ | |
5612 | struct symbol *sym = find_pc_function (pc); | |
5613 | if (sym) | |
5614 | expanded.sals[i] = find_function_start_sal (sym, 1); | |
5615 | else | |
d80b854b UW |
5616 | { |
5617 | /* Since find_pc_partial_function returned true, | |
5618 | we should really always find the section here. */ | |
5619 | struct obj_section *section = find_pc_section (pc); | |
5620 | if (section) | |
5621 | { | |
5622 | struct gdbarch *gdbarch | |
5623 | = get_objfile_arch (section->objfile); | |
5624 | expanded.sals[i].pc | |
5625 | = gdbarch_skip_prologue (gdbarch, pc); | |
5626 | } | |
5627 | } | |
ed0616c6 VP |
5628 | } |
5629 | } | |
5630 | } | |
5631 | } | |
3daf8fe5 JG |
5632 | else |
5633 | { | |
5634 | for (i = 0; i < expanded.nelts; ++i) | |
5635 | { | |
5636 | /* If this SAL corresponds to a breakpoint inserted using a | |
5637 | line number, then skip the function prologue if necessary. */ | |
5638 | skip_prologue_sal (&expanded.sals[i]); | |
5639 | } | |
5640 | } | |
ed0616c6 VP |
5641 | |
5642 | ||
5643 | if (expanded.nelts <= 1) | |
5644 | { | |
5645 | /* This is un ugly workaround. If we get zero | |
5646 | expanded sals then something is really wrong. | |
5647 | Fix that by returnign the original sal. */ | |
5648 | xfree (expanded.sals); | |
5649 | expanded.nelts = 1; | |
5650 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5651 | sal.pc = original_pc; | |
5652 | expanded.sals[0] = sal; | |
5653 | return expanded; | |
5654 | } | |
5655 | ||
5656 | if (original_pc) | |
5657 | { | |
5658 | found = 0; | |
5659 | for (i = 0; i < expanded.nelts; ++i) | |
5660 | if (expanded.sals[i].pc == original_pc) | |
5661 | { | |
5662 | found = 1; | |
5663 | break; | |
5664 | } | |
5665 | gdb_assert (found); | |
5666 | } | |
5667 | ||
5668 | return expanded; | |
5669 | } | |
5670 | ||
018d34a4 VP |
5671 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
5672 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
5673 | value. COND_STRING, if not NULL, specified the condition to be | |
5674 | used for all breakpoints. Essentially the only case where | |
5675 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
5676 | function. In that case, it's still not possible to specify | |
5677 | separate conditions for different overloaded functions, so | |
5678 | we take just a single condition string. | |
5679 | ||
c3f6f71d | 5680 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 5681 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
5682 | array contents). If the function fails (error() is called), the |
5683 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
5684 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
5685 | |
5686 | static void | |
a6d9a66e UW |
5687 | create_breakpoints (struct gdbarch *gdbarch, |
5688 | struct symtabs_and_lines sals, char **addr_string, | |
018d34a4 | 5689 | char *cond_string, |
c3f6f71d | 5690 | enum bptype type, enum bpdisp disposition, |
4a306c9a | 5691 | int thread, int task, int ignore_count, |
41447f92 VP |
5692 | struct breakpoint_ops *ops, int from_tty, |
5693 | int enabled) | |
c906108c | 5694 | { |
018d34a4 VP |
5695 | int i; |
5696 | for (i = 0; i < sals.nelts; ++i) | |
c3f6f71d | 5697 | { |
ed0616c6 VP |
5698 | struct symtabs_and_lines expanded = |
5699 | expand_line_sal_maybe (sals.sals[i]); | |
0d381245 | 5700 | |
a6d9a66e | 5701 | create_breakpoint (gdbarch, expanded, addr_string[i], |
018d34a4 | 5702 | cond_string, type, disposition, |
4a306c9a | 5703 | thread, task, ignore_count, ops, from_tty, enabled); |
c3f6f71d | 5704 | } |
c3f6f71d | 5705 | } |
c906108c | 5706 | |
c3f6f71d JM |
5707 | /* Parse ARG which is assumed to be a SAL specification possibly |
5708 | followed by conditionals. On return, SALS contains an array of SAL | |
5709 | addresses found. ADDR_STRING contains a vector of (canonical) | |
5710 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 5711 | |
b9362cc7 | 5712 | static void |
c3f6f71d JM |
5713 | parse_breakpoint_sals (char **address, |
5714 | struct symtabs_and_lines *sals, | |
0101ce28 JJ |
5715 | char ***addr_string, |
5716 | int *not_found_ptr) | |
c3f6f71d JM |
5717 | { |
5718 | char *addr_start = *address; | |
5719 | *addr_string = NULL; | |
5720 | /* If no arg given, or if first arg is 'if ', use the default | |
5721 | breakpoint. */ | |
5722 | if ((*address) == NULL | |
5723 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
5724 | { |
5725 | if (default_breakpoint_valid) | |
5726 | { | |
c3f6f71d | 5727 | struct symtab_and_line sal; |
fe39c653 | 5728 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 5729 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
5730 | xmalloc (sizeof (struct symtab_and_line)); |
5731 | sal.pc = default_breakpoint_address; | |
5732 | sal.line = default_breakpoint_line; | |
5733 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 5734 | sal.section = find_pc_overlay (sal.pc); |
00903456 JK |
5735 | |
5736 | /* "break" without arguments is equivalent to "break *PC" where PC is | |
5737 | the default_breakpoint_address. So make sure to set | |
5738 | sal.explicit_pc to prevent GDB from trying to expand the list of | |
5739 | sals to include all other instances with the same symtab and line. | |
5740 | */ | |
5741 | sal.explicit_pc = 1; | |
5742 | ||
c3f6f71d JM |
5743 | sals->sals[0] = sal; |
5744 | sals->nelts = 1; | |
c906108c SS |
5745 | } |
5746 | else | |
8a3fe4f8 | 5747 | error (_("No default breakpoint address now.")); |
c906108c SS |
5748 | } |
5749 | else | |
5750 | { | |
c906108c | 5751 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
5752 | current_source_symtab (which is decode_line_1's default). This |
5753 | should produce the results we want almost all of the time while | |
1aeae86e AF |
5754 | leaving default_breakpoint_* alone. |
5755 | ObjC: However, don't match an Objective-C method name which | |
5756 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 5757 | |
c214a6fd | 5758 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 5759 | |
c906108c | 5760 | if (default_breakpoint_valid |
0378c332 | 5761 | && (!cursal.symtab |
1aeae86e AF |
5762 | || ((strchr ("+-", (*address)[0]) != NULL) |
5763 | && ((*address)[1] != '[')))) | |
c3f6f71d | 5764 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
0101ce28 JJ |
5765 | default_breakpoint_line, addr_string, |
5766 | not_found_ptr); | |
c906108c | 5767 | else |
0101ce28 JJ |
5768 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
5769 | addr_string, not_found_ptr); | |
c906108c | 5770 | } |
c3f6f71d JM |
5771 | /* For any SAL that didn't have a canonical string, fill one in. */ |
5772 | if (sals->nelts > 0 && *addr_string == NULL) | |
5773 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
5774 | if (addr_start != (*address)) | |
c906108c | 5775 | { |
c3f6f71d JM |
5776 | int i; |
5777 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 5778 | { |
c3f6f71d JM |
5779 | /* Add the string if not present. */ |
5780 | if ((*addr_string)[i] == NULL) | |
5781 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
5782 | } |
5783 | } | |
c3f6f71d | 5784 | } |
c906108c | 5785 | |
c906108c | 5786 | |
c3f6f71d JM |
5787 | /* Convert each SAL into a real PC. Verify that the PC can be |
5788 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 5789 | |
b9362cc7 | 5790 | static void |
c3f6f71d JM |
5791 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, |
5792 | char *address) | |
5793 | { | |
5794 | int i; | |
5795 | for (i = 0; i < sals->nelts; i++) | |
ee53e872 | 5796 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
5797 | } |
5798 | ||
05ff989b | 5799 | static void |
0101ce28 JJ |
5800 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) |
5801 | { | |
5802 | struct captured_parse_breakpoint_args *args = data; | |
5803 | ||
5804 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p, | |
5805 | args->not_found_ptr); | |
0101ce28 JJ |
5806 | } |
5807 | ||
018d34a4 VP |
5808 | /* Given TOK, a string specification of condition and thread, as |
5809 | accepted by the 'break' command, extract the condition | |
5810 | string and thread number and set *COND_STRING and *THREAD. | |
5811 | PC identifies the context at which the condition should be parsed. | |
5812 | If no condition is found, *COND_STRING is set to NULL. | |
5813 | If no thread is found, *THREAD is set to -1. */ | |
5814 | static void | |
5815 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
4a306c9a | 5816 | char **cond_string, int *thread, int *task) |
018d34a4 VP |
5817 | { |
5818 | *cond_string = NULL; | |
5819 | *thread = -1; | |
5820 | while (tok && *tok) | |
5821 | { | |
5822 | char *end_tok; | |
5823 | int toklen; | |
5824 | char *cond_start = NULL; | |
5825 | char *cond_end = NULL; | |
5826 | while (*tok == ' ' || *tok == '\t') | |
5827 | tok++; | |
5828 | ||
5829 | end_tok = tok; | |
5830 | ||
5831 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5832 | end_tok++; | |
5833 | ||
5834 | toklen = end_tok - tok; | |
5835 | ||
5836 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5837 | { | |
f7545552 TT |
5838 | struct expression *expr; |
5839 | ||
018d34a4 | 5840 | tok = cond_start = end_tok + 1; |
f7545552 TT |
5841 | expr = parse_exp_1 (&tok, block_for_pc (pc), 0); |
5842 | xfree (expr); | |
018d34a4 VP |
5843 | cond_end = tok; |
5844 | *cond_string = savestring (cond_start, | |
5845 | cond_end - cond_start); | |
5846 | } | |
5847 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5848 | { | |
5849 | char *tmptok; | |
5850 | ||
5851 | tok = end_tok + 1; | |
5852 | tmptok = tok; | |
5853 | *thread = strtol (tok, &tok, 0); | |
5854 | if (tok == tmptok) | |
5855 | error (_("Junk after thread keyword.")); | |
5856 | if (!valid_thread_id (*thread)) | |
5857 | error (_("Unknown thread %d."), *thread); | |
5858 | } | |
4a306c9a JB |
5859 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
5860 | { | |
5861 | char *tmptok; | |
5862 | ||
5863 | tok = end_tok + 1; | |
5864 | tmptok = tok; | |
5865 | *task = strtol (tok, &tok, 0); | |
5866 | if (tok == tmptok) | |
5867 | error (_("Junk after task keyword.")); | |
5868 | if (!valid_task_id (*task)) | |
5869 | error (_("Unknown task %d\n"), *task); | |
5870 | } | |
018d34a4 VP |
5871 | else |
5872 | error (_("Junk at end of arguments.")); | |
5873 | } | |
5874 | } | |
5875 | ||
72b2ff0e VP |
5876 | /* Set a breakpoint. This function is shared between |
5877 | CLI and MI functions for setting a breakpoint. | |
5878 | This function has two major modes of operations, | |
5879 | selected by the PARSE_CONDITION_AND_THREAD parameter. | |
5880 | If non-zero, the function will parse arg, extracting | |
5881 | breakpoint location, address and thread. Otherwise, | |
5882 | ARG is just the location of breakpoint, with condition | |
5883 | and thread specified by the COND_STRING and THREAD | |
5884 | parameters. */ | |
0101ce28 | 5885 | |
98deb0da | 5886 | static void |
a6d9a66e UW |
5887 | break_command_really (struct gdbarch *gdbarch, |
5888 | char *arg, char *cond_string, int thread, | |
60c46647 | 5889 | int parse_condition_and_thread, |
1042e4c0 | 5890 | int tempflag, int hardwareflag, int traceflag, |
60c46647 VP |
5891 | int ignore_count, |
5892 | enum auto_boolean pending_break_support, | |
604133b5 | 5893 | struct breakpoint_ops *ops, |
41447f92 VP |
5894 | int from_tty, |
5895 | int enabled) | |
c3f6f71d | 5896 | { |
71fff37b | 5897 | struct gdb_exception e; |
c3f6f71d | 5898 | struct symtabs_and_lines sals; |
0101ce28 | 5899 | struct symtab_and_line pending_sal; |
0101ce28 JJ |
5900 | char *copy_arg; |
5901 | char *err_msg; | |
c3f6f71d JM |
5902 | char *addr_start = arg; |
5903 | char **addr_string; | |
5904 | struct cleanup *old_chain; | |
80c99de1 | 5905 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 5906 | struct captured_parse_breakpoint_args parse_args; |
05ff989b | 5907 | int i; |
0101ce28 | 5908 | int pending = 0; |
0101ce28 | 5909 | int not_found = 0; |
1042e4c0 | 5910 | enum bptype type_wanted; |
4a306c9a | 5911 | int task = 0; |
c3f6f71d | 5912 | |
c3f6f71d JM |
5913 | sals.sals = NULL; |
5914 | sals.nelts = 0; | |
5915 | addr_string = NULL; | |
c3f6f71d | 5916 | |
0101ce28 JJ |
5917 | parse_args.arg_p = &arg; |
5918 | parse_args.sals_p = &sals; | |
5919 | parse_args.addr_string_p = &addr_string; | |
5920 | parse_args.not_found_ptr = ¬_found; | |
5921 | ||
05ff989b AC |
5922 | e = catch_exception (uiout, do_captured_parse_breakpoint, |
5923 | &parse_args, RETURN_MASK_ALL); | |
0101ce28 JJ |
5924 | |
5925 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 5926 | switch (e.reason) |
0101ce28 | 5927 | { |
05ff989b | 5928 | case RETURN_QUIT: |
98deb0da | 5929 | throw_exception (e); |
05ff989b AC |
5930 | case RETURN_ERROR: |
5931 | switch (e.error) | |
0101ce28 | 5932 | { |
05ff989b | 5933 | case NOT_FOUND_ERROR: |
0101ce28 | 5934 | |
05ff989b AC |
5935 | /* If pending breakpoint support is turned off, throw |
5936 | error. */ | |
fa8d40ab JJ |
5937 | |
5938 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
5939 | throw_exception (e); |
5940 | ||
5941 | exception_print (gdb_stderr, e); | |
fa8d40ab | 5942 | |
05ff989b AC |
5943 | /* If pending breakpoint support is auto query and the user |
5944 | selects no, then simply return the error code. */ | |
059fb39f PM |
5945 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
5946 | && !nquery ("Make breakpoint pending on future shared library load? ")) | |
98deb0da | 5947 | return; |
fa8d40ab | 5948 | |
05ff989b AC |
5949 | /* At this point, either the user was queried about setting |
5950 | a pending breakpoint and selected yes, or pending | |
5951 | breakpoint behavior is on and thus a pending breakpoint | |
5952 | is defaulted on behalf of the user. */ | |
0101ce28 JJ |
5953 | copy_arg = xstrdup (addr_start); |
5954 | addr_string = ©_arg; | |
5955 | sals.nelts = 1; | |
5956 | sals.sals = &pending_sal; | |
5957 | pending_sal.pc = 0; | |
5958 | pending = 1; | |
05ff989b AC |
5959 | break; |
5960 | default: | |
98deb0da | 5961 | throw_exception (e); |
0101ce28 | 5962 | } |
05ff989b AC |
5963 | default: |
5964 | if (!sals.nelts) | |
98deb0da | 5965 | return; |
0101ce28 | 5966 | } |
c3f6f71d JM |
5967 | |
5968 | /* Create a chain of things that always need to be cleaned up. */ | |
5969 | old_chain = make_cleanup (null_cleanup, 0); | |
5970 | ||
0101ce28 JJ |
5971 | if (!pending) |
5972 | { | |
5973 | /* Make sure that all storage allocated to SALS gets freed. */ | |
5974 | make_cleanup (xfree, sals.sals); | |
5975 | ||
5976 | /* Cleanup the addr_string array but not its contents. */ | |
5977 | make_cleanup (xfree, addr_string); | |
5978 | } | |
c3f6f71d | 5979 | |
c3f6f71d JM |
5980 | /* ----------------------------- SNIP ----------------------------- |
5981 | Anything added to the cleanup chain beyond this point is assumed | |
5982 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
5983 | then the memory is not reclaimed. */ |
5984 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d JM |
5985 | |
5986 | /* Mark the contents of the addr_string for cleanup. These go on | |
80c99de1 | 5987 | the bkpt_chain and only occur if the breakpoint create fails. */ |
c3f6f71d JM |
5988 | for (i = 0; i < sals.nelts; i++) |
5989 | { | |
5990 | if (addr_string[i] != NULL) | |
b8c9b27d | 5991 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
5992 | } |
5993 | ||
5994 | /* Resolve all line numbers to PC's and verify that the addresses | |
5995 | are ok for the target. */ | |
0101ce28 JJ |
5996 | if (!pending) |
5997 | breakpoint_sals_to_pc (&sals, addr_start); | |
c3f6f71d | 5998 | |
1042e4c0 SS |
5999 | type_wanted = (traceflag |
6000 | ? bp_tracepoint | |
6001 | : (hardwareflag ? bp_hardware_breakpoint : bp_breakpoint)); | |
6002 | ||
c3f6f71d JM |
6003 | /* Verify that condition can be parsed, before setting any |
6004 | breakpoints. Allocate a separate condition expression for each | |
6005 | breakpoint. */ | |
0101ce28 | 6006 | if (!pending) |
c3f6f71d | 6007 | { |
2f069f6f | 6008 | if (parse_condition_and_thread) |
72b2ff0e VP |
6009 | { |
6010 | /* Here we only parse 'arg' to separate condition | |
6011 | from thread number, so parsing in context of first | |
6012 | sal is OK. When setting the breakpoint we'll | |
6013 | re-parse it in context of each sal. */ | |
6014 | cond_string = NULL; | |
6015 | thread = -1; | |
4a306c9a JB |
6016 | find_condition_and_thread (arg, sals.sals[0].pc, &cond_string, |
6017 | &thread, &task); | |
72b2ff0e VP |
6018 | if (cond_string) |
6019 | make_cleanup (xfree, cond_string); | |
6020 | } | |
2f069f6f | 6021 | else |
72b2ff0e VP |
6022 | { |
6023 | /* Create a private copy of condition string. */ | |
6024 | if (cond_string) | |
6025 | { | |
6026 | cond_string = xstrdup (cond_string); | |
6027 | make_cleanup (xfree, cond_string); | |
6028 | } | |
6029 | } | |
a6d9a66e | 6030 | create_breakpoints (gdbarch, sals, addr_string, cond_string, type_wanted, |
0101ce28 | 6031 | tempflag ? disp_del : disp_donttouch, |
4a306c9a | 6032 | thread, task, ignore_count, ops, from_tty, enabled); |
c906108c | 6033 | } |
0101ce28 JJ |
6034 | else |
6035 | { | |
fe3f5fa8 | 6036 | struct symtab_and_line sal = {0}; |
0101ce28 JJ |
6037 | struct breakpoint *b; |
6038 | ||
0101ce28 JJ |
6039 | make_cleanup (xfree, copy_arg); |
6040 | ||
a6d9a66e | 6041 | b = set_raw_breakpoint_without_location (gdbarch, type_wanted); |
0101ce28 JJ |
6042 | set_breakpoint_count (breakpoint_count + 1); |
6043 | b->number = breakpoint_count; | |
72b2ff0e | 6044 | b->thread = -1; |
018d34a4 | 6045 | b->addr_string = addr_string[0]; |
72b2ff0e | 6046 | b->cond_string = NULL; |
0101ce28 | 6047 | b->ignore_count = ignore_count; |
0101ce28 | 6048 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 6049 | b->condition_not_parsed = 1; |
604133b5 | 6050 | b->ops = ops; |
41447f92 | 6051 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
74960c60 | 6052 | |
8bea4e01 UW |
6053 | if (enabled && executing_startup |
6054 | && (b->type == bp_breakpoint | |
6055 | || b->type == bp_hardware_breakpoint)) | |
6056 | b->enable_state = bp_startup_disabled; | |
6057 | ||
0101ce28 JJ |
6058 | mention (b); |
6059 | } | |
6060 | ||
c3f6f71d | 6061 | if (sals.nelts > 1) |
8a3fe4f8 AC |
6062 | warning (_("Multiple breakpoints were set.\n" |
6063 | "Use the \"delete\" command to delete unwanted breakpoints.")); | |
80c99de1 PA |
6064 | /* That's it. Discard the cleanups for data inserted into the |
6065 | breakpoint. */ | |
6066 | discard_cleanups (bkpt_chain); | |
6067 | /* But cleanup everything else. */ | |
c3f6f71d | 6068 | do_cleanups (old_chain); |
217dc9e2 | 6069 | |
80c99de1 | 6070 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
217dc9e2 | 6071 | update_global_location_list (1); |
c3f6f71d | 6072 | } |
c906108c | 6073 | |
72b2ff0e VP |
6074 | /* Set a breakpoint. |
6075 | ARG is a string describing breakpoint address, | |
6076 | condition, and thread. | |
6077 | FLAG specifies if a breakpoint is hardware on, | |
6078 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
6079 | and BP_TEMPFLAG. */ | |
6080 | ||
98deb0da | 6081 | static void |
72b2ff0e | 6082 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 6083 | { |
72b2ff0e VP |
6084 | int hardwareflag = flag & BP_HARDWAREFLAG; |
6085 | int tempflag = flag & BP_TEMPFLAG; | |
c3f6f71d | 6086 | |
a6d9a66e UW |
6087 | break_command_really (get_current_arch (), |
6088 | arg, | |
98deb0da | 6089 | NULL, 0, 1 /* parse arg */, |
1042e4c0 | 6090 | tempflag, hardwareflag, 0 /* traceflag */, |
98deb0da | 6091 | 0 /* Ignore count */, |
604133b5 AR |
6092 | pending_break_support, |
6093 | NULL /* breakpoint_ops */, | |
41447f92 VP |
6094 | from_tty, |
6095 | 1 /* enabled */); | |
c906108c SS |
6096 | } |
6097 | ||
72b2ff0e | 6098 | |
98deb0da | 6099 | void |
a6d9a66e UW |
6100 | set_breakpoint (struct gdbarch *gdbarch, |
6101 | char *address, char *condition, | |
c3f6f71d | 6102 | int hardwareflag, int tempflag, |
ce43223b | 6103 | int thread, int ignore_count, |
41447f92 | 6104 | int pending, int enabled) |
c3f6f71d | 6105 | { |
a6d9a66e UW |
6106 | break_command_really (gdbarch, |
6107 | address, condition, thread, | |
98deb0da | 6108 | 0 /* condition and thread are valid. */, |
1042e4c0 | 6109 | tempflag, hardwareflag, 0 /* traceflag */, |
98deb0da VP |
6110 | ignore_count, |
6111 | pending | |
6112 | ? AUTO_BOOLEAN_TRUE : AUTO_BOOLEAN_FALSE, | |
41447f92 | 6113 | NULL, 0, enabled); |
c3f6f71d JM |
6114 | } |
6115 | ||
6a048695 JB |
6116 | /* Adjust SAL to the first instruction past the function prologue. |
6117 | The end of the prologue is determined using the line table from | |
3daf8fe5 JG |
6118 | the debugging information. explicit_pc and explicit_line are |
6119 | not modified. | |
6a048695 JB |
6120 | |
6121 | If SAL is already past the prologue, then do nothing. */ | |
6122 | ||
6123 | static void | |
6124 | skip_prologue_sal (struct symtab_and_line *sal) | |
6125 | { | |
6126 | struct symbol *sym = find_pc_function (sal->pc); | |
6127 | struct symtab_and_line start_sal; | |
6128 | ||
6129 | if (sym == NULL) | |
6130 | return; | |
6131 | ||
6132 | start_sal = find_function_start_sal (sym, 1); | |
6133 | if (sal->pc < start_sal.pc) | |
3daf8fe5 JG |
6134 | { |
6135 | start_sal.explicit_line = sal->explicit_line; | |
6136 | start_sal.explicit_pc = sal->explicit_pc; | |
6137 | *sal = start_sal; | |
6138 | } | |
6a048695 | 6139 | } |
c3f6f71d | 6140 | |
c906108c SS |
6141 | /* Helper function for break_command_1 and disassemble_command. */ |
6142 | ||
6143 | void | |
fba45db2 | 6144 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
6145 | { |
6146 | CORE_ADDR pc; | |
6147 | ||
6148 | if (sal->pc == 0 && sal->symtab != NULL) | |
6149 | { | |
6150 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 6151 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
6152 | sal->line, sal->symtab->filename); |
6153 | sal->pc = pc; | |
6a048695 JB |
6154 | |
6155 | /* If this SAL corresponds to a breakpoint inserted using | |
6156 | a line number, then skip the function prologue if necessary. */ | |
6157 | if (sal->explicit_line) | |
56ef84b1 TT |
6158 | { |
6159 | /* Preserve the original line number. */ | |
6160 | int saved_line = sal->line; | |
6161 | skip_prologue_sal (sal); | |
6162 | sal->line = saved_line; | |
6163 | } | |
c906108c SS |
6164 | } |
6165 | ||
6166 | if (sal->section == 0 && sal->symtab != NULL) | |
6167 | { | |
6168 | struct blockvector *bv; | |
c5aa993b JM |
6169 | struct block *b; |
6170 | struct symbol *sym; | |
c906108c | 6171 | |
801e3a5b | 6172 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
6173 | if (bv != NULL) |
6174 | { | |
7f0df278 | 6175 | sym = block_linkage_function (b); |
c906108c SS |
6176 | if (sym != NULL) |
6177 | { | |
6178 | fixup_symbol_section (sym, sal->symtab->objfile); | |
714835d5 | 6179 | sal->section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
6180 | } |
6181 | else | |
6182 | { | |
6183 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
6184 | have to look harder. This case can be executed if we have |
6185 | line numbers but no functions (as can happen in assembly | |
6186 | source). */ | |
c906108c | 6187 | |
c5aa993b | 6188 | struct minimal_symbol *msym; |
c906108c SS |
6189 | |
6190 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
6191 | if (msym) | |
714835d5 | 6192 | sal->section = SYMBOL_OBJ_SECTION (msym); |
c906108c SS |
6193 | } |
6194 | } | |
6195 | } | |
6196 | } | |
6197 | ||
6198 | void | |
fba45db2 | 6199 | break_command (char *arg, int from_tty) |
c906108c | 6200 | { |
db107f19 | 6201 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
6202 | } |
6203 | ||
c906108c | 6204 | void |
fba45db2 | 6205 | tbreak_command (char *arg, int from_tty) |
c906108c | 6206 | { |
db107f19 | 6207 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
6208 | } |
6209 | ||
c906108c | 6210 | static void |
fba45db2 | 6211 | hbreak_command (char *arg, int from_tty) |
c906108c | 6212 | { |
db107f19 | 6213 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
6214 | } |
6215 | ||
6216 | static void | |
fba45db2 | 6217 | thbreak_command (char *arg, int from_tty) |
c906108c | 6218 | { |
db107f19 | 6219 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
6220 | } |
6221 | ||
6222 | static void | |
fba45db2 | 6223 | stop_command (char *arg, int from_tty) |
c906108c | 6224 | { |
a3f17187 | 6225 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 6226 | Usage: stop in <function | address>\n\ |
a3f17187 | 6227 | stop at <line>\n")); |
c906108c SS |
6228 | } |
6229 | ||
6230 | static void | |
fba45db2 | 6231 | stopin_command (char *arg, int from_tty) |
c906108c SS |
6232 | { |
6233 | int badInput = 0; | |
6234 | ||
c5aa993b | 6235 | if (arg == (char *) NULL) |
c906108c SS |
6236 | badInput = 1; |
6237 | else if (*arg != '*') | |
6238 | { | |
6239 | char *argptr = arg; | |
6240 | int hasColon = 0; | |
6241 | ||
53a5351d JM |
6242 | /* look for a ':'. If this is a line number specification, then |
6243 | say it is bad, otherwise, it should be an address or | |
6244 | function/method name */ | |
c906108c | 6245 | while (*argptr && !hasColon) |
c5aa993b JM |
6246 | { |
6247 | hasColon = (*argptr == ':'); | |
6248 | argptr++; | |
6249 | } | |
c906108c SS |
6250 | |
6251 | if (hasColon) | |
c5aa993b | 6252 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 6253 | else |
c5aa993b | 6254 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
6255 | } |
6256 | ||
6257 | if (badInput) | |
a3f17187 | 6258 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 6259 | else |
db107f19 | 6260 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
6261 | } |
6262 | ||
6263 | static void | |
fba45db2 | 6264 | stopat_command (char *arg, int from_tty) |
c906108c SS |
6265 | { |
6266 | int badInput = 0; | |
6267 | ||
c5aa993b | 6268 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
6269 | badInput = 1; |
6270 | else | |
6271 | { | |
6272 | char *argptr = arg; | |
6273 | int hasColon = 0; | |
6274 | ||
6275 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 6276 | it is probably a line number. */ |
c906108c | 6277 | while (*argptr && !hasColon) |
c5aa993b JM |
6278 | { |
6279 | hasColon = (*argptr == ':'); | |
6280 | argptr++; | |
6281 | } | |
c906108c SS |
6282 | |
6283 | if (hasColon) | |
c5aa993b | 6284 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 6285 | else |
c5aa993b | 6286 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
6287 | } |
6288 | ||
6289 | if (badInput) | |
a3f17187 | 6290 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 6291 | else |
db107f19 | 6292 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
6293 | } |
6294 | ||
53a5351d JM |
6295 | /* accessflag: hw_write: watch write, |
6296 | hw_read: watch read, | |
6297 | hw_access: watch access (read or write) */ | |
c906108c | 6298 | static void |
fba45db2 | 6299 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c | 6300 | { |
a6d9a66e | 6301 | struct gdbarch *gdbarch = get_current_arch (); |
d983da9c | 6302 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c SS |
6303 | struct symtab_and_line sal; |
6304 | struct expression *exp; | |
6305 | struct block *exp_valid_block; | |
6306 | struct value *val, *mark; | |
6307 | struct frame_info *frame; | |
c906108c SS |
6308 | char *exp_start = NULL; |
6309 | char *exp_end = NULL; | |
37e4754d | 6310 | char *tok, *id_tok_start, *end_tok; |
c906108c SS |
6311 | int toklen; |
6312 | char *cond_start = NULL; | |
6313 | char *cond_end = NULL; | |
6314 | struct expression *cond = NULL; | |
6315 | int i, other_type_used, target_resources_ok = 0; | |
6316 | enum bptype bp_type; | |
6317 | int mem_cnt = 0; | |
37e4754d | 6318 | int thread = -1; |
c906108c | 6319 | |
fe39c653 | 6320 | init_sal (&sal); /* initialize to zeroes */ |
c5aa993b | 6321 | |
37e4754d LM |
6322 | /* Make sure that we actually have parameters to parse. */ |
6323 | if (arg != NULL && arg[0] != '\0') | |
6324 | { | |
6325 | toklen = strlen (arg); /* Size of argument list. */ | |
6326 | ||
6327 | /* Points tok to the end of the argument list. */ | |
6328 | tok = arg + toklen - 1; | |
6329 | ||
6330 | /* Go backwards in the parameters list. Skip the last parameter. | |
6331 | If we're expecting a 'thread <thread_num>' parameter, this should | |
6332 | be the thread identifier. */ | |
6333 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
6334 | tok--; | |
6335 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
6336 | tok--; | |
6337 | ||
6338 | /* Points end_tok to the beginning of the last token. */ | |
6339 | id_tok_start = tok + 1; | |
6340 | ||
6341 | /* Go backwards in the parameters list. Skip one more parameter. | |
6342 | If we're expecting a 'thread <thread_num>' parameter, we should | |
6343 | reach a "thread" token. */ | |
6344 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
6345 | tok--; | |
6346 | ||
6347 | end_tok = tok; | |
6348 | ||
6349 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
6350 | tok--; | |
6351 | ||
6352 | /* Move the pointer forward to skip the whitespace and | |
6353 | calculate the length of the token. */ | |
6354 | tok++; | |
6355 | toklen = end_tok - tok; | |
6356 | ||
6357 | if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
6358 | { | |
6359 | /* At this point we've found a "thread" token, which means | |
6360 | the user is trying to set a watchpoint that triggers | |
6361 | only in a specific thread. */ | |
6362 | char *endp; | |
6363 | ||
6364 | /* Extract the thread ID from the next token. */ | |
6365 | thread = strtol (id_tok_start, &endp, 0); | |
6366 | ||
6367 | /* Check if the user provided a valid numeric value for the | |
6368 | thread ID. */ | |
6369 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
6370 | error (_("Invalid thread ID specification %s."), id_tok_start); | |
6371 | ||
6372 | /* Check if the thread actually exists. */ | |
6373 | if (!valid_thread_id (thread)) | |
6374 | error (_("Unknown thread %d."), thread); | |
6375 | ||
6376 | /* Truncate the string and get rid of the thread <thread_num> | |
6377 | parameter before the parameter list is parsed by the | |
6378 | evaluate_expression() function. */ | |
6379 | *tok = '\0'; | |
6380 | } | |
6381 | } | |
6382 | ||
6383 | /* Parse the rest of the arguments. */ | |
c906108c SS |
6384 | innermost_block = NULL; |
6385 | exp_start = arg; | |
6386 | exp = parse_exp_1 (&arg, 0, 0); | |
6387 | exp_end = arg; | |
fa8a61dc TT |
6388 | /* Remove trailing whitespace from the expression before saving it. |
6389 | This makes the eventual display of the expression string a bit | |
6390 | prettier. */ | |
6391 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
6392 | --exp_end; | |
6393 | ||
c906108c SS |
6394 | exp_valid_block = innermost_block; |
6395 | mark = value_mark (); | |
fa4727a6 DJ |
6396 | fetch_watchpoint_value (exp, &val, NULL, NULL); |
6397 | if (val != NULL) | |
6398 | release_value (val); | |
c906108c SS |
6399 | |
6400 | tok = arg; | |
6401 | while (*tok == ' ' || *tok == '\t') | |
6402 | tok++; | |
6403 | end_tok = tok; | |
6404 | ||
6405 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
6406 | end_tok++; | |
6407 | ||
6408 | toklen = end_tok - tok; | |
6409 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
6410 | { | |
6411 | tok = cond_start = end_tok + 1; | |
6412 | cond = parse_exp_1 (&tok, 0, 0); | |
6413 | cond_end = tok; | |
6414 | } | |
6415 | if (*tok) | |
8a3fe4f8 | 6416 | error (_("Junk at end of command.")); |
c906108c | 6417 | |
53a5351d | 6418 | if (accessflag == hw_read) |
c5aa993b | 6419 | bp_type = bp_read_watchpoint; |
53a5351d | 6420 | else if (accessflag == hw_access) |
c5aa993b JM |
6421 | bp_type = bp_access_watchpoint; |
6422 | else | |
6423 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
6424 | |
6425 | mem_cnt = can_use_hardware_watchpoint (val); | |
6426 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
8a3fe4f8 | 6427 | error (_("Expression cannot be implemented with read/access watchpoint.")); |
c5aa993b JM |
6428 | if (mem_cnt != 0) |
6429 | { | |
6430 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d | 6431 | target_resources_ok = |
d92524f1 | 6432 | target_can_use_hardware_watchpoint (bp_type, i + mem_cnt, |
53a5351d | 6433 | other_type_used); |
c5aa993b | 6434 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 6435 | error (_("Target does not support this type of hardware watchpoint.")); |
53a5351d | 6436 | |
c5aa993b | 6437 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 6438 | error (_("Target can only support one kind of HW watchpoint at a time.")); |
c5aa993b | 6439 | } |
c906108c | 6440 | |
4d28f7a8 KB |
6441 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
6442 | watchpoint could not be set. */ | |
6443 | if (!mem_cnt || target_resources_ok <= 0) | |
6444 | bp_type = bp_watchpoint; | |
6445 | ||
d983da9c | 6446 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
6447 | |
6448 | /* If the expression is "local", then set up a "watchpoint scope" | |
6449 | breakpoint at the point where we've left the scope of the watchpoint | |
6450 | expression. Create the scope breakpoint before the watchpoint, so | |
6451 | that we will encounter it first in bpstat_stop_status. */ | |
edb3359d | 6452 | if (innermost_block && frame) |
d983da9c | 6453 | { |
edb3359d DJ |
6454 | if (frame_id_p (frame_unwind_caller_id (frame))) |
6455 | { | |
6456 | scope_breakpoint | |
a6d9a66e UW |
6457 | = create_internal_breakpoint (frame_unwind_caller_arch (frame), |
6458 | frame_unwind_caller_pc (frame), | |
edb3359d | 6459 | bp_watchpoint_scope); |
d983da9c | 6460 | |
edb3359d | 6461 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 6462 | |
edb3359d DJ |
6463 | /* Automatically delete the breakpoint when it hits. */ |
6464 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 6465 | |
edb3359d DJ |
6466 | /* Only break in the proper frame (help with recursion). */ |
6467 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 6468 | |
edb3359d | 6469 | /* Set the address at which we will stop. */ |
a6d9a66e UW |
6470 | scope_breakpoint->loc->gdbarch |
6471 | = frame_unwind_caller_arch (frame); | |
edb3359d DJ |
6472 | scope_breakpoint->loc->requested_address |
6473 | = frame_unwind_caller_pc (frame); | |
6474 | scope_breakpoint->loc->address | |
a6d9a66e UW |
6475 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
6476 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
6477 | scope_breakpoint->type); |
6478 | } | |
d983da9c DJ |
6479 | } |
6480 | ||
c906108c | 6481 | /* Now set up the breakpoint. */ |
a6d9a66e | 6482 | b = set_raw_breakpoint (gdbarch, sal, bp_type); |
c906108c SS |
6483 | set_breakpoint_count (breakpoint_count + 1); |
6484 | b->number = breakpoint_count; | |
37e4754d | 6485 | b->thread = thread; |
b5de0fa7 | 6486 | b->disposition = disp_donttouch; |
c906108c SS |
6487 | b->exp = exp; |
6488 | b->exp_valid_block = exp_valid_block; | |
6489 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
6490 | b->val = val; | |
fa4727a6 | 6491 | b->val_valid = 1; |
511a6cd4 | 6492 | b->loc->cond = cond; |
c906108c SS |
6493 | if (cond_start) |
6494 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
6495 | else | |
6496 | b->cond_string = 0; | |
c5aa993b | 6497 | |
c906108c | 6498 | if (frame) |
d983da9c | 6499 | b->watchpoint_frame = get_frame_id (frame); |
c906108c | 6500 | else |
35a487f1 | 6501 | b->watchpoint_frame = null_frame_id; |
c906108c | 6502 | |
d983da9c | 6503 | if (scope_breakpoint != NULL) |
c906108c | 6504 | { |
d983da9c DJ |
6505 | /* The scope breakpoint is related to the watchpoint. We will |
6506 | need to act on them together. */ | |
6507 | b->related_breakpoint = scope_breakpoint; | |
6508 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 6509 | } |
d983da9c | 6510 | |
c906108c SS |
6511 | value_free_to_mark (mark); |
6512 | mention (b); | |
b60e7edf | 6513 | update_global_location_list (1); |
c906108c SS |
6514 | } |
6515 | ||
6516 | /* Return count of locations need to be watched and can be handled | |
6517 | in hardware. If the watchpoint can not be handled | |
6518 | in hardware return zero. */ | |
6519 | ||
c906108c | 6520 | static int |
fba45db2 | 6521 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
6522 | { |
6523 | int found_memory_cnt = 0; | |
2e70b7b9 | 6524 | struct value *head = v; |
c906108c SS |
6525 | |
6526 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 6527 | if (!can_use_hw_watchpoints) |
c906108c | 6528 | return 0; |
c5aa993b | 6529 | |
5c44784c JM |
6530 | /* Make sure that the value of the expression depends only upon |
6531 | memory contents, and values computed from them within GDB. If we | |
6532 | find any register references or function calls, we can't use a | |
6533 | hardware watchpoint. | |
6534 | ||
6535 | The idea here is that evaluating an expression generates a series | |
6536 | of values, one holding the value of every subexpression. (The | |
6537 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
6538 | a*b+c.) GDB's values hold almost enough information to establish | |
6539 | the criteria given above --- they identify memory lvalues, | |
6540 | register lvalues, computed values, etcetera. So we can evaluate | |
6541 | the expression, and then scan the chain of values that leaves | |
6542 | behind to decide whether we can detect any possible change to the | |
6543 | expression's final value using only hardware watchpoints. | |
6544 | ||
6545 | However, I don't think that the values returned by inferior | |
6546 | function calls are special in any way. So this function may not | |
6547 | notice that an expression involving an inferior function call | |
6548 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 6549 | for (; v; v = value_next (v)) |
c906108c | 6550 | { |
5c44784c | 6551 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 6552 | { |
d69fe07e | 6553 | if (value_lazy (v)) |
5c44784c JM |
6554 | /* A lazy memory lvalue is one that GDB never needed to fetch; |
6555 | we either just used its address (e.g., `a' in `a.b') or | |
6556 | we never needed it at all (e.g., `a' in `a,b'). */ | |
6557 | ; | |
53a5351d | 6558 | else |
5c44784c JM |
6559 | { |
6560 | /* Ahh, memory we actually used! Check if we can cover | |
6561 | it with hardware watchpoints. */ | |
df407dfe | 6562 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
6563 | |
6564 | /* We only watch structs and arrays if user asked for it | |
6565 | explicitly, never if they just happen to appear in a | |
6566 | middle of some value chain. */ | |
6567 | if (v == head | |
6568 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
6569 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
6570 | { | |
42ae5230 | 6571 | CORE_ADDR vaddr = value_address (v); |
df407dfe | 6572 | int len = TYPE_LENGTH (value_type (v)); |
2e70b7b9 | 6573 | |
d92524f1 | 6574 | if (!target_region_ok_for_hw_watchpoint (vaddr, len)) |
2e70b7b9 MS |
6575 | return 0; |
6576 | else | |
6577 | found_memory_cnt++; | |
6578 | } | |
5c44784c | 6579 | } |
c5aa993b | 6580 | } |
5086187c AC |
6581 | else if (VALUE_LVAL (v) != not_lval |
6582 | && deprecated_value_modifiable (v) == 0) | |
53a5351d | 6583 | return 0; /* ??? What does this represent? */ |
5086187c | 6584 | else if (VALUE_LVAL (v) == lval_register) |
53a5351d | 6585 | return 0; /* cannot watch a register with a HW watchpoint */ |
c906108c SS |
6586 | } |
6587 | ||
6588 | /* The expression itself looks suitable for using a hardware | |
6589 | watchpoint, but give the target machine a chance to reject it. */ | |
6590 | return found_memory_cnt; | |
6591 | } | |
6592 | ||
8b93c638 | 6593 | void |
fba45db2 | 6594 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6595 | { |
6596 | watch_command (arg, from_tty); | |
6597 | } | |
8926118c | 6598 | |
c5aa993b | 6599 | static void |
fba45db2 | 6600 | watch_command (char *arg, int from_tty) |
c906108c | 6601 | { |
53a5351d | 6602 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
6603 | } |
6604 | ||
8b93c638 | 6605 | void |
fba45db2 | 6606 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6607 | { |
6608 | rwatch_command (arg, from_tty); | |
6609 | } | |
8926118c | 6610 | |
c5aa993b | 6611 | static void |
fba45db2 | 6612 | rwatch_command (char *arg, int from_tty) |
c906108c | 6613 | { |
53a5351d | 6614 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
6615 | } |
6616 | ||
8b93c638 | 6617 | void |
fba45db2 | 6618 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6619 | { |
6620 | awatch_command (arg, from_tty); | |
6621 | } | |
8926118c | 6622 | |
c5aa993b | 6623 | static void |
fba45db2 | 6624 | awatch_command (char *arg, int from_tty) |
c906108c | 6625 | { |
53a5351d | 6626 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 6627 | } |
c906108c | 6628 | \f |
c5aa993b | 6629 | |
43ff13b4 | 6630 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
6631 | because it uses the mechanisms of breakpoints. */ |
6632 | ||
bfec99b2 PA |
6633 | struct until_break_command_continuation_args |
6634 | { | |
6635 | struct breakpoint *breakpoint; | |
6636 | struct breakpoint *breakpoint2; | |
6637 | }; | |
6638 | ||
43ff13b4 JM |
6639 | /* This function is called by fetch_inferior_event via the |
6640 | cmd_continuation pointer, to complete the until command. It takes | |
6641 | care of cleaning up the temporary breakpoints set up by the until | |
6642 | command. */ | |
c2c6d25f | 6643 | static void |
604ead4a | 6644 | until_break_command_continuation (void *arg) |
43ff13b4 | 6645 | { |
bfec99b2 PA |
6646 | struct until_break_command_continuation_args *a = arg; |
6647 | ||
6648 | delete_breakpoint (a->breakpoint); | |
6649 | if (a->breakpoint2) | |
6650 | delete_breakpoint (a->breakpoint2); | |
43ff13b4 JM |
6651 | } |
6652 | ||
c906108c | 6653 | void |
ae66c1fc | 6654 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
6655 | { |
6656 | struct symtabs_and_lines sals; | |
6657 | struct symtab_and_line sal; | |
206415a3 | 6658 | struct frame_info *frame = get_selected_frame (NULL); |
c906108c | 6659 | struct breakpoint *breakpoint; |
f107f563 | 6660 | struct breakpoint *breakpoint2 = NULL; |
c906108c SS |
6661 | struct cleanup *old_chain; |
6662 | ||
6663 | clear_proceed_status (); | |
6664 | ||
6665 | /* Set a breakpoint where the user wants it and at return from | |
6666 | this function */ | |
c5aa993b | 6667 | |
c906108c SS |
6668 | if (default_breakpoint_valid) |
6669 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 6670 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 6671 | else |
53a5351d | 6672 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 6673 | 0, (char ***) NULL, NULL); |
c5aa993b | 6674 | |
c906108c | 6675 | if (sals.nelts != 1) |
8a3fe4f8 | 6676 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 6677 | |
c906108c | 6678 | sal = sals.sals[0]; |
b8c9b27d | 6679 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 6680 | |
c906108c | 6681 | if (*arg) |
8a3fe4f8 | 6682 | error (_("Junk at end of arguments.")); |
c5aa993b | 6683 | |
c906108c | 6684 | resolve_sal_pc (&sal); |
c5aa993b | 6685 | |
ae66c1fc EZ |
6686 | if (anywhere) |
6687 | /* If the user told us to continue until a specified location, | |
6688 | we don't specify a frame at which we need to stop. */ | |
a6d9a66e UW |
6689 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
6690 | null_frame_id, bp_until); | |
ae66c1fc | 6691 | else |
edb3359d | 6692 | /* Otherwise, specify the selected frame, because we want to stop only |
ae66c1fc | 6693 | at the very same frame. */ |
a6d9a66e UW |
6694 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
6695 | get_stack_frame_id (frame), | |
ae66c1fc | 6696 | bp_until); |
c5aa993b | 6697 | |
f107f563 | 6698 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
c906108c | 6699 | |
ae66c1fc EZ |
6700 | /* Keep within the current frame, or in frames called by the current |
6701 | one. */ | |
edb3359d DJ |
6702 | |
6703 | if (frame_id_p (frame_unwind_caller_id (frame))) | |
c906108c | 6704 | { |
edb3359d DJ |
6705 | sal = find_pc_line (frame_unwind_caller_pc (frame), 0); |
6706 | sal.pc = frame_unwind_caller_pc (frame); | |
a6d9a66e UW |
6707 | breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame), |
6708 | sal, | |
edb3359d | 6709 | frame_unwind_caller_id (frame), |
f107f563 VP |
6710 | bp_until); |
6711 | make_cleanup_delete_breakpoint (breakpoint2); | |
c906108c | 6712 | } |
c5aa993b | 6713 | |
c906108c | 6714 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
f107f563 VP |
6715 | |
6716 | /* If we are running asynchronously, and proceed call above has actually | |
6717 | managed to start the target, arrange for breakpoints to be | |
6718 | deleted when the target stops. Otherwise, we're already stopped and | |
6719 | delete breakpoints via cleanup chain. */ | |
6720 | ||
8ea051c5 | 6721 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 6722 | { |
bfec99b2 PA |
6723 | struct until_break_command_continuation_args *args; |
6724 | args = xmalloc (sizeof (*args)); | |
f107f563 | 6725 | |
bfec99b2 PA |
6726 | args->breakpoint = breakpoint; |
6727 | args->breakpoint2 = breakpoint2; | |
f107f563 VP |
6728 | |
6729 | discard_cleanups (old_chain); | |
95e54da7 PA |
6730 | add_continuation (inferior_thread (), |
6731 | until_break_command_continuation, args, | |
604ead4a | 6732 | xfree); |
f107f563 VP |
6733 | } |
6734 | else | |
c5aa993b | 6735 | do_cleanups (old_chain); |
c906108c | 6736 | } |
ae66c1fc | 6737 | |
c906108c | 6738 | static void |
fba45db2 | 6739 | ep_skip_leading_whitespace (char **s) |
c906108c | 6740 | { |
c5aa993b JM |
6741 | if ((s == NULL) || (*s == NULL)) |
6742 | return; | |
6743 | while (isspace (**s)) | |
6744 | *s += 1; | |
c906108c | 6745 | } |
c5aa993b | 6746 | |
c906108c SS |
6747 | /* This function attempts to parse an optional "if <cond>" clause |
6748 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 6749 | |
c906108c SS |
6750 | Else, it returns a pointer to the condition string. (It does not |
6751 | attempt to evaluate the string against a particular block.) And, | |
6752 | it updates arg to point to the first character following the parsed | |
6753 | if clause in the arg string. */ | |
53a5351d | 6754 | |
c906108c | 6755 | static char * |
fba45db2 | 6756 | ep_parse_optional_if_clause (char **arg) |
c906108c | 6757 | { |
c5aa993b JM |
6758 | char *cond_string; |
6759 | ||
6760 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 6761 | return NULL; |
c5aa993b | 6762 | |
c906108c SS |
6763 | /* Skip the "if" keyword. */ |
6764 | (*arg) += 2; | |
c5aa993b | 6765 | |
c906108c SS |
6766 | /* Skip any extra leading whitespace, and record the start of the |
6767 | condition string. */ | |
6768 | ep_skip_leading_whitespace (arg); | |
6769 | cond_string = *arg; | |
c5aa993b | 6770 | |
c906108c SS |
6771 | /* Assume that the condition occupies the remainder of the arg string. */ |
6772 | (*arg) += strlen (cond_string); | |
c5aa993b | 6773 | |
c906108c SS |
6774 | return cond_string; |
6775 | } | |
c5aa993b | 6776 | |
c906108c SS |
6777 | /* This function attempts to parse an optional filename from the arg |
6778 | string. If one is not found, it returns NULL. | |
c5aa993b | 6779 | |
c906108c SS |
6780 | Else, it returns a pointer to the parsed filename. (This function |
6781 | makes no attempt to verify that a file of that name exists, or is | |
6782 | accessible.) And, it updates arg to point to the first character | |
6783 | following the parsed filename in the arg string. | |
c5aa993b | 6784 | |
c906108c SS |
6785 | Note that clients needing to preserve the returned filename for |
6786 | future access should copy it to their own buffers. */ | |
6787 | static char * | |
fba45db2 | 6788 | ep_parse_optional_filename (char **arg) |
c906108c | 6789 | { |
c5aa993b JM |
6790 | static char filename[1024]; |
6791 | char *arg_p = *arg; | |
6792 | int i; | |
6793 | char c; | |
6794 | ||
c906108c SS |
6795 | if ((*arg_p == '\0') || isspace (*arg_p)) |
6796 | return NULL; | |
c5aa993b JM |
6797 | |
6798 | for (i = 0;; i++) | |
c906108c SS |
6799 | { |
6800 | c = *arg_p; | |
6801 | if (isspace (c)) | |
c5aa993b | 6802 | c = '\0'; |
c906108c SS |
6803 | filename[i] = c; |
6804 | if (c == '\0') | |
c5aa993b | 6805 | break; |
c906108c SS |
6806 | arg_p++; |
6807 | } | |
6808 | *arg = arg_p; | |
c5aa993b | 6809 | |
c906108c SS |
6810 | return filename; |
6811 | } | |
c5aa993b | 6812 | |
c906108c SS |
6813 | /* Commands to deal with catching events, such as signals, exceptions, |
6814 | process start/exit, etc. */ | |
c5aa993b JM |
6815 | |
6816 | typedef enum | |
6817 | { | |
44feb3ce TT |
6818 | catch_fork_temporary, catch_vfork_temporary, |
6819 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
6820 | } |
6821 | catch_fork_kind; | |
6822 | ||
c906108c | 6823 | static void |
44feb3ce | 6824 | catch_fork_command_1 (char *arg, int from_tty, struct cmd_list_element *command) |
c906108c | 6825 | { |
a6d9a66e | 6826 | struct gdbarch *gdbarch = get_current_arch (); |
c5aa993b | 6827 | char *cond_string = NULL; |
44feb3ce TT |
6828 | catch_fork_kind fork_kind; |
6829 | int tempflag; | |
6830 | ||
6831 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
6832 | tempflag = (fork_kind == catch_fork_temporary | |
6833 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 6834 | |
44feb3ce TT |
6835 | if (!arg) |
6836 | arg = ""; | |
c906108c | 6837 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6838 | |
c906108c | 6839 | /* The allowed syntax is: |
c5aa993b JM |
6840 | catch [v]fork |
6841 | catch [v]fork if <cond> | |
6842 | ||
c906108c SS |
6843 | First, check if there's an if clause. */ |
6844 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6845 | |
c906108c | 6846 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6847 | error (_("Junk at end of arguments.")); |
c5aa993b | 6848 | |
c906108c SS |
6849 | /* If this target supports it, create a fork or vfork catchpoint |
6850 | and enable reporting of such events. */ | |
c5aa993b JM |
6851 | switch (fork_kind) |
6852 | { | |
44feb3ce TT |
6853 | case catch_fork_temporary: |
6854 | case catch_fork_permanent: | |
a6d9a66e | 6855 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 6856 | &catch_fork_breakpoint_ops); |
c906108c | 6857 | break; |
44feb3ce TT |
6858 | case catch_vfork_temporary: |
6859 | case catch_vfork_permanent: | |
a6d9a66e | 6860 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 6861 | &catch_vfork_breakpoint_ops); |
c906108c | 6862 | break; |
c5aa993b | 6863 | default: |
8a3fe4f8 | 6864 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 6865 | break; |
c5aa993b | 6866 | } |
c906108c SS |
6867 | } |
6868 | ||
6869 | static void | |
44feb3ce | 6870 | catch_exec_command_1 (char *arg, int from_tty, struct cmd_list_element *command) |
c906108c | 6871 | { |
a6d9a66e | 6872 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 6873 | int tempflag; |
c5aa993b | 6874 | char *cond_string = NULL; |
c906108c | 6875 | |
44feb3ce TT |
6876 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
6877 | ||
6878 | if (!arg) | |
6879 | arg = ""; | |
c906108c SS |
6880 | ep_skip_leading_whitespace (&arg); |
6881 | ||
6882 | /* The allowed syntax is: | |
c5aa993b JM |
6883 | catch exec |
6884 | catch exec if <cond> | |
c906108c SS |
6885 | |
6886 | First, check if there's an if clause. */ | |
6887 | cond_string = ep_parse_optional_if_clause (&arg); | |
6888 | ||
6889 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6890 | error (_("Junk at end of arguments.")); |
c906108c SS |
6891 | |
6892 | /* If this target supports it, create an exec catchpoint | |
6893 | and enable reporting of such events. */ | |
a6d9a66e UW |
6894 | create_catchpoint (gdbarch, tempflag, cond_string, |
6895 | &catch_exec_breakpoint_ops); | |
c906108c | 6896 | } |
c5aa993b | 6897 | |
3086aeae DJ |
6898 | static enum print_stop_action |
6899 | print_exception_catchpoint (struct breakpoint *b) | |
6900 | { | |
ade92717 | 6901 | int bp_temp, bp_throw; |
3086aeae | 6902 | |
ade92717 | 6903 | annotate_catchpoint (b->number); |
3086aeae | 6904 | |
ade92717 AR |
6905 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
6906 | if (b->loc->address != b->loc->requested_address) | |
6907 | breakpoint_adjustment_warning (b->loc->requested_address, | |
6908 | b->loc->address, | |
6909 | b->number, 1); | |
df2b6d2d | 6910 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
6911 | ui_out_text (uiout, |
6912 | bp_temp ? "Temporary catchpoint " | |
6913 | : "Catchpoint "); | |
6914 | if (!ui_out_is_mi_like_p (uiout)) | |
6915 | ui_out_field_int (uiout, "bkptno", b->number); | |
6916 | ui_out_text (uiout, | |
c0b37c48 AR |
6917 | bp_throw ? " (exception thrown), " |
6918 | : " (exception caught), "); | |
ade92717 AR |
6919 | if (ui_out_is_mi_like_p (uiout)) |
6920 | { | |
6921 | ui_out_field_string (uiout, "reason", | |
6922 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
6923 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
6924 | ui_out_field_int (uiout, "bkptno", b->number); | |
6925 | } | |
3086aeae DJ |
6926 | return PRINT_SRC_AND_LOC; |
6927 | } | |
6928 | ||
6929 | static void | |
a6d9a66e | 6930 | print_one_exception_catchpoint (struct breakpoint *b, struct bp_location **last_loc) |
3086aeae | 6931 | { |
79a45b7d TT |
6932 | struct value_print_options opts; |
6933 | get_user_print_options (&opts); | |
6934 | if (opts.addressprint) | |
3086aeae DJ |
6935 | { |
6936 | annotate_field (4); | |
604133b5 AR |
6937 | if (b->loc == NULL || b->loc->shlib_disabled) |
6938 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
6939 | else | |
5af949e3 UW |
6940 | ui_out_field_core_addr (uiout, "addr", |
6941 | b->loc->gdbarch, b->loc->address); | |
3086aeae DJ |
6942 | } |
6943 | annotate_field (5); | |
604133b5 | 6944 | if (b->loc) |
a6d9a66e | 6945 | *last_loc = b->loc; |
3086aeae DJ |
6946 | if (strstr (b->addr_string, "throw") != NULL) |
6947 | ui_out_field_string (uiout, "what", "exception throw"); | |
6948 | else | |
6949 | ui_out_field_string (uiout, "what", "exception catch"); | |
6950 | } | |
6951 | ||
6952 | static void | |
6953 | print_mention_exception_catchpoint (struct breakpoint *b) | |
6954 | { | |
ade92717 AR |
6955 | int bp_temp; |
6956 | int bp_throw; | |
6957 | ||
df2b6d2d | 6958 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
6959 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
6960 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
6961 | : _("Catchpoint ")); | |
6962 | ui_out_field_int (uiout, "bkptno", b->number); | |
6963 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
6964 | : _(" (catch)")); | |
3086aeae DJ |
6965 | } |
6966 | ||
6967 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { | |
ce78b96d JB |
6968 | NULL, /* insert */ |
6969 | NULL, /* remove */ | |
6970 | NULL, /* breakpoint_hit */ | |
3086aeae DJ |
6971 | print_exception_catchpoint, |
6972 | print_one_exception_catchpoint, | |
6973 | print_mention_exception_catchpoint | |
6974 | }; | |
6975 | ||
6976 | static int | |
6977 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
6978 | enum exception_event_kind ex_event, int from_tty) | |
6979 | { | |
604133b5 AR |
6980 | char *trigger_func_name; |
6981 | ||
3086aeae | 6982 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 6983 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 6984 | else |
604133b5 | 6985 | trigger_func_name = "__cxa_throw"; |
3086aeae | 6986 | |
a6d9a66e UW |
6987 | break_command_really (get_current_arch (), |
6988 | trigger_func_name, cond_string, -1, | |
604133b5 | 6989 | 0 /* condition and thread are valid. */, |
1042e4c0 | 6990 | tempflag, 0, 0, |
604133b5 AR |
6991 | 0, |
6992 | AUTO_BOOLEAN_TRUE /* pending */, | |
41447f92 VP |
6993 | &gnu_v3_exception_catchpoint_ops, from_tty, |
6994 | 1 /* enabled */); | |
3086aeae | 6995 | |
3086aeae DJ |
6996 | return 1; |
6997 | } | |
6998 | ||
c5aa993b | 6999 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
7000 | |
7001 | static void | |
fba45db2 KB |
7002 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
7003 | int tempflag, int from_tty) | |
c906108c | 7004 | { |
c5aa993b JM |
7005 | char *cond_string = NULL; |
7006 | struct symtab_and_line *sal = NULL; | |
7007 | ||
44feb3ce TT |
7008 | if (!arg) |
7009 | arg = ""; | |
c906108c | 7010 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 7011 | |
c906108c SS |
7012 | cond_string = ep_parse_optional_if_clause (&arg); |
7013 | ||
7014 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 7015 | error (_("Junk at end of arguments.")); |
c906108c | 7016 | |
059fb39f PM |
7017 | if (ex_event != EX_EVENT_THROW |
7018 | && ex_event != EX_EVENT_CATCH) | |
8a3fe4f8 | 7019 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 7020 | |
3086aeae DJ |
7021 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
7022 | return; | |
7023 | ||
8a3fe4f8 | 7024 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
7025 | } |
7026 | ||
44feb3ce TT |
7027 | /* Implementation of "catch catch" command. */ |
7028 | ||
7029 | static void | |
7030 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
7031 | { | |
7032 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
7033 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); | |
7034 | } | |
7035 | ||
7036 | /* Implementation of "catch throw" command. */ | |
7037 | ||
7038 | static void | |
7039 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
7040 | { | |
7041 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
7042 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); | |
7043 | } | |
7044 | ||
f7f9143b JB |
7045 | /* Create a breakpoint struct for Ada exception catchpoints. */ |
7046 | ||
7047 | static void | |
a6d9a66e UW |
7048 | create_ada_exception_breakpoint (struct gdbarch *gdbarch, |
7049 | struct symtab_and_line sal, | |
f7f9143b JB |
7050 | char *addr_string, |
7051 | char *exp_string, | |
7052 | char *cond_string, | |
7053 | struct expression *cond, | |
7054 | struct breakpoint_ops *ops, | |
7055 | int tempflag, | |
7056 | int from_tty) | |
7057 | { | |
7058 | struct breakpoint *b; | |
7059 | ||
7060 | if (from_tty) | |
7061 | { | |
5af949e3 UW |
7062 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
7063 | if (!loc_gdbarch) | |
7064 | loc_gdbarch = gdbarch; | |
7065 | ||
7066 | describe_other_breakpoints (loc_gdbarch, sal.pc, sal.section, -1); | |
f7f9143b JB |
7067 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
7068 | version for exception catchpoints, because two catchpoints | |
7069 | used for different exception names will use the same address. | |
7070 | In this case, a "breakpoint ... also set at..." warning is | |
7071 | unproductive. Besides. the warning phrasing is also a bit | |
7072 | inapropriate, we should use the word catchpoint, and tell | |
7073 | the user what type of catchpoint it is. The above is good | |
7074 | enough for now, though. */ | |
7075 | } | |
7076 | ||
a6d9a66e | 7077 | b = set_raw_breakpoint (gdbarch, sal, bp_breakpoint); |
f7f9143b JB |
7078 | set_breakpoint_count (breakpoint_count + 1); |
7079 | ||
7080 | b->enable_state = bp_enabled; | |
7081 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
7082 | b->number = breakpoint_count; | |
7083 | b->ignore_count = 0; | |
511a6cd4 | 7084 | b->loc->cond = cond; |
f7f9143b JB |
7085 | b->addr_string = addr_string; |
7086 | b->language = language_ada; | |
7087 | b->cond_string = cond_string; | |
7088 | b->exp_string = exp_string; | |
7089 | b->thread = -1; | |
7090 | b->ops = ops; | |
f7f9143b JB |
7091 | |
7092 | mention (b); | |
b60e7edf | 7093 | update_global_location_list (1); |
f7f9143b JB |
7094 | } |
7095 | ||
7096 | /* Implement the "catch exception" command. */ | |
7097 | ||
7098 | static void | |
44feb3ce TT |
7099 | catch_ada_exception_command (char *arg, int from_tty, |
7100 | struct cmd_list_element *command) | |
f7f9143b | 7101 | { |
a6d9a66e | 7102 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 7103 | int tempflag; |
f7f9143b JB |
7104 | struct symtab_and_line sal; |
7105 | enum bptype type; | |
7106 | char *addr_string = NULL; | |
7107 | char *exp_string = NULL; | |
7108 | char *cond_string = NULL; | |
7109 | struct expression *cond = NULL; | |
7110 | struct breakpoint_ops *ops = NULL; | |
7111 | ||
44feb3ce TT |
7112 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
7113 | ||
7114 | if (!arg) | |
7115 | arg = ""; | |
f7f9143b JB |
7116 | sal = ada_decode_exception_location (arg, &addr_string, &exp_string, |
7117 | &cond_string, &cond, &ops); | |
a6d9a66e | 7118 | create_ada_exception_breakpoint (gdbarch, sal, addr_string, exp_string, |
f7f9143b JB |
7119 | cond_string, cond, ops, tempflag, |
7120 | from_tty); | |
7121 | } | |
7122 | ||
7123 | /* Implement the "catch assert" command. */ | |
7124 | ||
7125 | static void | |
44feb3ce | 7126 | catch_assert_command (char *arg, int from_tty, struct cmd_list_element *command) |
f7f9143b | 7127 | { |
a6d9a66e | 7128 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 7129 | int tempflag; |
f7f9143b JB |
7130 | struct symtab_and_line sal; |
7131 | char *addr_string = NULL; | |
7132 | struct breakpoint_ops *ops = NULL; | |
7133 | ||
44feb3ce TT |
7134 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
7135 | ||
7136 | if (!arg) | |
7137 | arg = ""; | |
f7f9143b | 7138 | sal = ada_decode_assert_location (arg, &addr_string, &ops); |
a6d9a66e UW |
7139 | create_ada_exception_breakpoint (gdbarch, sal, addr_string, NULL, NULL, NULL, |
7140 | ops, tempflag, from_tty); | |
f7f9143b JB |
7141 | } |
7142 | ||
c906108c | 7143 | static void |
fba45db2 | 7144 | catch_command (char *arg, int from_tty) |
c906108c | 7145 | { |
44feb3ce | 7146 | error (_("Catch requires an event name.")); |
c906108c SS |
7147 | } |
7148 | \f | |
7149 | ||
7150 | static void | |
fba45db2 | 7151 | tcatch_command (char *arg, int from_tty) |
c906108c | 7152 | { |
44feb3ce | 7153 | error (_("Catch requires an event name.")); |
c906108c SS |
7154 | } |
7155 | ||
80f8a6eb | 7156 | /* Delete breakpoints by address or line. */ |
c906108c SS |
7157 | |
7158 | static void | |
fba45db2 | 7159 | clear_command (char *arg, int from_tty) |
c906108c | 7160 | { |
d6e956e5 VP |
7161 | struct breakpoint *b; |
7162 | VEC(breakpoint_p) *found = 0; | |
7163 | int ix; | |
c906108c SS |
7164 | int default_match; |
7165 | struct symtabs_and_lines sals; | |
7166 | struct symtab_and_line sal; | |
c906108c SS |
7167 | int i; |
7168 | ||
7169 | if (arg) | |
7170 | { | |
7171 | sals = decode_line_spec (arg, 1); | |
7172 | default_match = 0; | |
7173 | } | |
7174 | else | |
7175 | { | |
c5aa993b | 7176 | sals.sals = (struct symtab_and_line *) |
c906108c | 7177 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 7178 | make_cleanup (xfree, sals.sals); |
fe39c653 | 7179 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
7180 | sal.line = default_breakpoint_line; |
7181 | sal.symtab = default_breakpoint_symtab; | |
7182 | sal.pc = default_breakpoint_address; | |
7183 | if (sal.symtab == 0) | |
8a3fe4f8 | 7184 | error (_("No source file specified.")); |
c906108c SS |
7185 | |
7186 | sals.sals[0] = sal; | |
7187 | sals.nelts = 1; | |
7188 | ||
7189 | default_match = 1; | |
7190 | } | |
7191 | ||
ed0616c6 VP |
7192 | /* We don't call resolve_sal_pc here. That's not |
7193 | as bad as it seems, because all existing breakpoints | |
7194 | typically have both file/line and pc set. So, if | |
7195 | clear is given file/line, we can match this to existing | |
7196 | breakpoint without obtaining pc at all. | |
7197 | ||
7198 | We only support clearing given the address explicitly | |
7199 | present in breakpoint table. Say, we've set breakpoint | |
7200 | at file:line. There were several PC values for that file:line, | |
7201 | due to optimization, all in one block. | |
7202 | We've picked one PC value. If "clear" is issued with another | |
7203 | PC corresponding to the same file:line, the breakpoint won't | |
7204 | be cleared. We probably can still clear the breakpoint, but | |
7205 | since the other PC value is never presented to user, user | |
7206 | can only find it by guessing, and it does not seem important | |
7207 | to support that. */ | |
7208 | ||
c906108c | 7209 | /* For each line spec given, delete bps which correspond |
80f8a6eb MS |
7210 | to it. Do it in two passes, solely to preserve the current |
7211 | behavior that from_tty is forced true if we delete more than | |
7212 | one breakpoint. */ | |
c906108c | 7213 | |
80f8a6eb | 7214 | found = NULL; |
c906108c SS |
7215 | for (i = 0; i < sals.nelts; i++) |
7216 | { | |
7217 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
7218 | If line given (pc == 0), clear all bpts on specified line. |
7219 | If defaulting, clear all bpts on default line | |
c906108c | 7220 | or at default pc. |
c5aa993b JM |
7221 | |
7222 | defaulting sal.pc != 0 tests to do | |
7223 | ||
7224 | 0 1 pc | |
7225 | 1 1 pc _and_ line | |
7226 | 0 0 line | |
7227 | 1 0 <can't happen> */ | |
c906108c SS |
7228 | |
7229 | sal = sals.sals[i]; | |
c906108c | 7230 | |
d6e956e5 VP |
7231 | /* Find all matching breakpoints and add them to |
7232 | 'found'. */ | |
7233 | ALL_BREAKPOINTS (b) | |
c5aa993b | 7234 | { |
0d381245 | 7235 | int match = 0; |
80f8a6eb MS |
7236 | /* Are we going to delete b? */ |
7237 | if (b->type != bp_none | |
7238 | && b->type != bp_watchpoint | |
7239 | && b->type != bp_hardware_watchpoint | |
7240 | && b->type != bp_read_watchpoint | |
0d381245 VP |
7241 | && b->type != bp_access_watchpoint) |
7242 | { | |
7243 | struct bp_location *loc = b->loc; | |
7244 | for (; loc; loc = loc->next) | |
7245 | { | |
7246 | int pc_match = sal.pc | |
7247 | && (loc->address == sal.pc) | |
7248 | && (!section_is_overlay (loc->section) | |
7249 | || loc->section == sal.section); | |
7250 | int line_match = ((default_match || (0 == sal.pc)) | |
7251 | && b->source_file != NULL | |
7252 | && sal.symtab != NULL | |
7253 | && strcmp (b->source_file, sal.symtab->filename) == 0 | |
7254 | && b->line_number == sal.line); | |
7255 | if (pc_match || line_match) | |
7256 | { | |
7257 | match = 1; | |
7258 | break; | |
7259 | } | |
7260 | } | |
7261 | } | |
7262 | ||
7263 | if (match) | |
d6e956e5 | 7264 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 7265 | } |
80f8a6eb MS |
7266 | } |
7267 | /* Now go thru the 'found' chain and delete them. */ | |
d6e956e5 | 7268 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
7269 | { |
7270 | if (arg) | |
8a3fe4f8 | 7271 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 7272 | else |
8a3fe4f8 | 7273 | error (_("No breakpoint at this line.")); |
80f8a6eb | 7274 | } |
c906108c | 7275 | |
d6e956e5 | 7276 | if (VEC_length(breakpoint_p, found) > 1) |
80f8a6eb MS |
7277 | from_tty = 1; /* Always report if deleted more than one */ |
7278 | if (from_tty) | |
a3f17187 | 7279 | { |
d6e956e5 | 7280 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
7281 | printf_unfiltered (_("Deleted breakpoint ")); |
7282 | else | |
7283 | printf_unfiltered (_("Deleted breakpoints ")); | |
7284 | } | |
80f8a6eb | 7285 | breakpoints_changed (); |
d6e956e5 VP |
7286 | |
7287 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 7288 | { |
c5aa993b | 7289 | if (from_tty) |
d6e956e5 VP |
7290 | printf_unfiltered ("%d ", b->number); |
7291 | delete_breakpoint (b); | |
c906108c | 7292 | } |
80f8a6eb MS |
7293 | if (from_tty) |
7294 | putchar_unfiltered ('\n'); | |
c906108c SS |
7295 | } |
7296 | \f | |
7297 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
7298 | all breakpoints that are marked for deletion, whether hit or not. | |
7299 | This is called after any breakpoint is hit, or after errors. */ | |
7300 | ||
7301 | void | |
fba45db2 | 7302 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
7303 | { |
7304 | struct breakpoint *b, *temp; | |
7305 | ||
7306 | for (; bs; bs = bs->next) | |
20874c92 VP |
7307 | if (bs->breakpoint_at |
7308 | && bs->breakpoint_at->owner | |
7309 | && bs->breakpoint_at->owner->disposition == disp_del | |
c906108c | 7310 | && bs->stop) |
4f8d1dc6 | 7311 | delete_breakpoint (bs->breakpoint_at->owner); |
c906108c SS |
7312 | |
7313 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7314 | { |
b5de0fa7 | 7315 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
7316 | delete_breakpoint (b); |
7317 | } | |
c906108c SS |
7318 | } |
7319 | ||
f7545552 TT |
7320 | /* A cleanup function which destroys a vector. */ |
7321 | ||
7322 | static void | |
7323 | do_vec_free (void *p) | |
7324 | { | |
7325 | VEC(bp_location_p) **vec = p; | |
7326 | if (*vec) | |
7327 | VEC_free (bp_location_p, *vec); | |
7328 | } | |
7329 | ||
4cd9bd08 | 7330 | /* If SHOULD_INSERT is false, do not insert any breakpoint locations |
b60e7edf PA |
7331 | into the inferior, only remove already-inserted locations that no |
7332 | longer should be inserted. Functions that delete a breakpoint or | |
7333 | breakpoints should pass false, so that deleting a breakpoint | |
7334 | doesn't have the side effect of inserting the locations of other | |
7335 | breakpoints that are marked not-inserted, but should_be_inserted | |
7336 | returns true on them. | |
7337 | ||
7338 | This behaviour is useful is situations close to tear-down -- e.g., | |
7339 | after an exec, while the target still has execution, but breakpoint | |
7340 | shadows of the previous executable image should *NOT* be restored | |
7341 | to the new image; or before detaching, where the target still has | |
7342 | execution and wants to delete breakpoints from GDB's lists, and all | |
7343 | breakpoints had already been removed from the inferior. */ | |
7344 | ||
0d381245 | 7345 | static void |
b60e7edf | 7346 | update_global_location_list (int should_insert) |
0d381245 | 7347 | { |
74960c60 VP |
7348 | struct breakpoint *b; |
7349 | struct bp_location **next = &bp_location_chain; | |
7350 | struct bp_location *loc; | |
7351 | struct bp_location *loc2; | |
74960c60 VP |
7352 | VEC(bp_location_p) *old_locations = NULL; |
7353 | int ret; | |
7354 | int ix; | |
f7545552 TT |
7355 | struct cleanup *cleanups; |
7356 | ||
7357 | cleanups = make_cleanup (do_vec_free, &old_locations); | |
74960c60 VP |
7358 | /* Store old locations for future reference. */ |
7359 | for (loc = bp_location_chain; loc; loc = loc->global_next) | |
7360 | VEC_safe_push (bp_location_p, old_locations, loc); | |
0d381245 | 7361 | |
74960c60 VP |
7362 | bp_location_chain = NULL; |
7363 | ALL_BREAKPOINTS (b) | |
0d381245 | 7364 | { |
74960c60 | 7365 | for (loc = b->loc; loc; loc = loc->next) |
0d381245 | 7366 | { |
74960c60 VP |
7367 | *next = loc; |
7368 | next = &(loc->global_next); | |
7369 | *next = NULL; | |
0d381245 | 7370 | } |
74960c60 VP |
7371 | } |
7372 | ||
7373 | /* Identify bp_location instances that are no longer present in the new | |
7374 | list, and therefore should be freed. Note that it's not necessary that | |
7375 | those locations should be removed from inferior -- if there's another | |
7376 | location at the same address (previously marked as duplicate), | |
7377 | we don't need to remove/insert the location. */ | |
7378 | for (ix = 0; VEC_iterate(bp_location_p, old_locations, ix, loc); ++ix) | |
7379 | { | |
7380 | /* Tells if 'loc' is found amoung the new locations. If not, we | |
7381 | have to free it. */ | |
7382 | int found_object = 0; | |
20874c92 VP |
7383 | /* Tells if the location should remain inserted in the target. */ |
7384 | int keep_in_target = 0; | |
7385 | int removed = 0; | |
74960c60 VP |
7386 | for (loc2 = bp_location_chain; loc2; loc2 = loc2->global_next) |
7387 | if (loc2 == loc) | |
7388 | { | |
7389 | found_object = 1; | |
7390 | break; | |
7391 | } | |
7392 | ||
7393 | /* If this location is no longer present, and inserted, look if there's | |
7394 | maybe a new location at the same address. If so, mark that one | |
7395 | inserted, and don't remove this one. This is needed so that we | |
7396 | don't have a time window where a breakpoint at certain location is not | |
7397 | inserted. */ | |
7398 | ||
7399 | if (loc->inserted) | |
0d381245 | 7400 | { |
74960c60 | 7401 | /* If the location is inserted now, we might have to remove it. */ |
74960c60 VP |
7402 | |
7403 | if (found_object && should_be_inserted (loc)) | |
7404 | { | |
7405 | /* The location is still present in the location list, and still | |
7406 | should be inserted. Don't do anything. */ | |
20874c92 | 7407 | keep_in_target = 1; |
74960c60 VP |
7408 | } |
7409 | else | |
7410 | { | |
7411 | /* The location is either no longer present, or got disabled. | |
7412 | See if there's another location at the same address, in which | |
7413 | case we don't need to remove this one from the target. */ | |
7414 | if (breakpoint_address_is_meaningful (loc->owner)) | |
7415 | for (loc2 = bp_location_chain; loc2; loc2 = loc2->global_next) | |
7416 | { | |
7417 | /* For the sake of should_insert_location. The | |
7418 | call to check_duplicates will fix up this later. */ | |
7419 | loc2->duplicate = 0; | |
7420 | if (should_be_inserted (loc2) | |
7421 | && loc2 != loc && loc2->address == loc->address) | |
7422 | { | |
7423 | loc2->inserted = 1; | |
7424 | loc2->target_info = loc->target_info; | |
20874c92 | 7425 | keep_in_target = 1; |
74960c60 VP |
7426 | break; |
7427 | } | |
7428 | } | |
7429 | } | |
7430 | ||
20874c92 VP |
7431 | if (!keep_in_target) |
7432 | { | |
7433 | if (remove_breakpoint (loc, mark_uninserted)) | |
7434 | { | |
7435 | /* This is just about all we can do. We could keep this | |
7436 | location on the global list, and try to remove it next | |
7437 | time, but there's no particular reason why we will | |
7438 | succeed next time. | |
7439 | ||
7440 | Note that at this point, loc->owner is still valid, | |
7441 | as delete_breakpoint frees the breakpoint only | |
7442 | after calling us. */ | |
7443 | printf_filtered (_("warning: Error removing breakpoint %d\n"), | |
7444 | loc->owner->number); | |
7445 | } | |
7446 | removed = 1; | |
7447 | } | |
0d381245 | 7448 | } |
74960c60 VP |
7449 | |
7450 | if (!found_object) | |
1c5cfe86 PA |
7451 | { |
7452 | if (removed && non_stop) | |
20874c92 VP |
7453 | { |
7454 | /* This location was removed from the targets. In non-stop mode, | |
7455 | a race condition is possible where we've removed a breakpoint, | |
7456 | but stop events for that breakpoint are already queued and will | |
7457 | arrive later. To suppress spurious SIGTRAPs reported to user, | |
7458 | we keep this breakpoint location for a bit, and will retire it | |
7459 | after we see 3 * thread_count events. | |
1c5cfe86 | 7460 | The theory here is that reporting of events should, |
20874c92 VP |
7461 | "on the average", be fair, so after that many event we'll see |
7462 | events from all threads that have anything of interest, and no | |
1c5cfe86 | 7463 | longer need to keep this breakpoint. This is just a |
20874c92 | 7464 | heuristic, but if it's wrong, we'll report unexpected SIGTRAP, |
1c5cfe86 | 7465 | which is usability issue, but not a correctness problem. */ |
20874c92 VP |
7466 | loc->events_till_retirement = 3 * (thread_count () + 1); |
7467 | loc->owner = NULL; | |
20874c92 | 7468 | |
1c5cfe86 PA |
7469 | VEC_safe_push (bp_location_p, moribund_locations, loc); |
7470 | } | |
7471 | else | |
7472 | free_bp_location (loc); | |
20874c92 | 7473 | } |
74960c60 | 7474 | } |
1c5cfe86 | 7475 | |
74960c60 VP |
7476 | ALL_BREAKPOINTS (b) |
7477 | { | |
7478 | check_duplicates (b); | |
0d381245 | 7479 | } |
74960c60 | 7480 | |
50c71eaf | 7481 | if (breakpoints_always_inserted_mode () && should_insert |
c35b1492 | 7482 | && (have_live_inferiors () |
2567c7d9 | 7483 | || (gdbarch_has_global_breakpoints (target_gdbarch)))) |
74960c60 | 7484 | insert_breakpoint_locations (); |
f7545552 TT |
7485 | |
7486 | do_cleanups (cleanups); | |
74960c60 VP |
7487 | } |
7488 | ||
20874c92 VP |
7489 | void |
7490 | breakpoint_retire_moribund (void) | |
7491 | { | |
7492 | struct bp_location *loc; | |
7493 | int ix; | |
7494 | ||
7495 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
7496 | if (--(loc->events_till_retirement) == 0) | |
7497 | { | |
7498 | free_bp_location (loc); | |
7499 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
7500 | --ix; | |
7501 | } | |
7502 | } | |
7503 | ||
74960c60 | 7504 | static void |
b60e7edf | 7505 | update_global_location_list_nothrow (int inserting) |
74960c60 VP |
7506 | { |
7507 | struct gdb_exception e; | |
7508 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
b60e7edf | 7509 | update_global_location_list (inserting); |
0d381245 VP |
7510 | } |
7511 | ||
a474d7c2 PA |
7512 | /* Clear BPT from a BPS. */ |
7513 | static void | |
7514 | bpstat_remove_breakpoint (bpstat bps, struct breakpoint *bpt) | |
7515 | { | |
7516 | bpstat bs; | |
7517 | for (bs = bps; bs; bs = bs->next) | |
7518 | if (bs->breakpoint_at && bs->breakpoint_at->owner == bpt) | |
7519 | { | |
7520 | bs->breakpoint_at = NULL; | |
7521 | bs->old_val = NULL; | |
7522 | /* bs->commands will be freed later. */ | |
7523 | } | |
7524 | } | |
7525 | ||
7526 | /* Callback for iterate_over_threads. */ | |
7527 | static int | |
7528 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
7529 | { | |
7530 | struct breakpoint *bpt = data; | |
7531 | bpstat_remove_breakpoint (th->stop_bpstat, bpt); | |
7532 | return 0; | |
7533 | } | |
7534 | ||
53a5351d JM |
7535 | /* Delete a breakpoint and clean up all traces of it in the data |
7536 | structures. */ | |
c906108c SS |
7537 | |
7538 | void | |
fba45db2 | 7539 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 7540 | { |
52f0bd74 | 7541 | struct breakpoint *b; |
74960c60 | 7542 | struct bp_location *loc, *next; |
c906108c | 7543 | |
8a3fe4f8 | 7544 | gdb_assert (bpt != NULL); |
c906108c SS |
7545 | |
7546 | /* Has this bp already been deleted? This can happen because multiple | |
7547 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
7548 | ||
7549 | One example of this happening is a watchpoint's scope bp. When the | |
7550 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
7551 | delete it. We also delete its scope bp. But the scope bp is marked | |
7552 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
7553 | checked for auto-deleting bp's, which are deleted. | |
7554 | ||
7555 | A real solution to this problem might involve reference counts in bp's, | |
7556 | and/or giving them pointers back to their referencing bpstat's, and | |
7557 | teaching delete_breakpoint to only free a bp's storage when no more | |
1272ad14 | 7558 | references were extent. A cheaper bandaid was chosen. */ |
c906108c SS |
7559 | if (bpt->type == bp_none) |
7560 | return; | |
7561 | ||
383f836e | 7562 | observer_notify_breakpoint_deleted (bpt->number); |
c906108c | 7563 | |
c906108c SS |
7564 | if (breakpoint_chain == bpt) |
7565 | breakpoint_chain = bpt->next; | |
7566 | ||
c906108c SS |
7567 | ALL_BREAKPOINTS (b) |
7568 | if (b->next == bpt) | |
c5aa993b JM |
7569 | { |
7570 | b->next = bpt->next; | |
7571 | break; | |
7572 | } | |
c906108c | 7573 | |
c906108c | 7574 | free_command_lines (&bpt->commands); |
c906108c | 7575 | if (bpt->cond_string != NULL) |
b8c9b27d | 7576 | xfree (bpt->cond_string); |
c906108c | 7577 | if (bpt->addr_string != NULL) |
b8c9b27d | 7578 | xfree (bpt->addr_string); |
c906108c | 7579 | if (bpt->exp != NULL) |
b8c9b27d | 7580 | xfree (bpt->exp); |
c906108c | 7581 | if (bpt->exp_string != NULL) |
b8c9b27d | 7582 | xfree (bpt->exp_string); |
c906108c SS |
7583 | if (bpt->val != NULL) |
7584 | value_free (bpt->val); | |
7585 | if (bpt->source_file != NULL) | |
b8c9b27d | 7586 | xfree (bpt->source_file); |
c906108c | 7587 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 7588 | xfree (bpt->exec_pathname); |
c906108c SS |
7589 | |
7590 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
7591 | /* FIXME, how can we find all bpstat's? | |
198757a8 VP |
7592 | We just check stop_bpstat for now. Note that we cannot just |
7593 | remove bpstats pointing at bpt from the stop_bpstat list | |
7594 | entirely, as breakpoint commands are associated with the bpstat; | |
7595 | if we remove it here, then the later call to | |
7596 | bpstat_do_actions (&stop_bpstat); | |
7597 | in event-top.c won't do anything, and temporary breakpoints | |
7598 | with commands won't work. */ | |
a474d7c2 | 7599 | |
a474d7c2 | 7600 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); |
74960c60 VP |
7601 | |
7602 | /* Now that breakpoint is removed from breakpoint | |
7603 | list, update the global location list. This | |
7604 | will remove locations that used to belong to | |
7605 | this breakpoint. Do this before freeing | |
7606 | the breakpoint itself, since remove_breakpoint | |
7607 | looks at location's owner. It might be better | |
7608 | design to have location completely self-contained, | |
7609 | but it's not the case now. */ | |
b60e7edf | 7610 | update_global_location_list (0); |
74960c60 VP |
7611 | |
7612 | ||
c906108c SS |
7613 | /* On the chance that someone will soon try again to delete this same |
7614 | bp, we mark it as deleted before freeing its storage. */ | |
7615 | bpt->type = bp_none; | |
7616 | ||
b8c9b27d | 7617 | xfree (bpt); |
c906108c SS |
7618 | } |
7619 | ||
4d6140d9 AC |
7620 | static void |
7621 | do_delete_breakpoint_cleanup (void *b) | |
7622 | { | |
7623 | delete_breakpoint (b); | |
7624 | } | |
7625 | ||
7626 | struct cleanup * | |
7627 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
7628 | { | |
7629 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
7630 | } | |
7631 | ||
c906108c | 7632 | void |
fba45db2 | 7633 | delete_command (char *arg, int from_tty) |
c906108c SS |
7634 | { |
7635 | struct breakpoint *b, *temp; | |
7636 | ||
ea9365bb TT |
7637 | dont_repeat (); |
7638 | ||
c906108c SS |
7639 | if (arg == 0) |
7640 | { | |
7641 | int breaks_to_delete = 0; | |
7642 | ||
7643 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
7644 | Do not delete internal or call-dummy breakpoints, these |
7645 | have to be deleted with an explicit breakpoint number argument. */ | |
7646 | ALL_BREAKPOINTS (b) | |
7647 | { | |
059fb39f PM |
7648 | if (b->type != bp_call_dummy |
7649 | && b->type != bp_shlib_event | |
7650 | && b->type != bp_thread_event | |
7651 | && b->type != bp_overlay_event | |
0fd8e87f | 7652 | && b->type != bp_longjmp_master |
059fb39f | 7653 | && b->number >= 0) |
973d738b DJ |
7654 | { |
7655 | breaks_to_delete = 1; | |
7656 | break; | |
7657 | } | |
c5aa993b | 7658 | } |
c906108c SS |
7659 | |
7660 | /* Ask user only if there are some breakpoints to delete. */ | |
7661 | if (!from_tty | |
e2e0b3e5 | 7662 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 7663 | { |
c5aa993b JM |
7664 | ALL_BREAKPOINTS_SAFE (b, temp) |
7665 | { | |
059fb39f PM |
7666 | if (b->type != bp_call_dummy |
7667 | && b->type != bp_shlib_event | |
7668 | && b->type != bp_thread_event | |
7669 | && b->type != bp_overlay_event | |
0fd8e87f | 7670 | && b->type != bp_longjmp_master |
059fb39f | 7671 | && b->number >= 0) |
c5aa993b JM |
7672 | delete_breakpoint (b); |
7673 | } | |
c906108c SS |
7674 | } |
7675 | } | |
7676 | else | |
7677 | map_breakpoint_numbers (arg, delete_breakpoint); | |
7678 | } | |
7679 | ||
0d381245 VP |
7680 | static int |
7681 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 7682 | { |
0d381245 VP |
7683 | for (; loc; loc = loc->next) |
7684 | if (!loc->shlib_disabled) | |
7685 | return 0; | |
7686 | return 1; | |
fe3f5fa8 VP |
7687 | } |
7688 | ||
776592bf DE |
7689 | /* Subroutine of update_breakpoint_locations to simplify it. |
7690 | Return non-zero if multiple fns in list LOC have the same name. | |
7691 | Null names are ignored. */ | |
7692 | ||
7693 | static int | |
7694 | ambiguous_names_p (struct bp_location *loc) | |
7695 | { | |
7696 | struct bp_location *l; | |
7697 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
7698 | (int (*) (const void *, const void *)) streq, | |
7699 | NULL, xcalloc, xfree); | |
7700 | ||
7701 | for (l = loc; l != NULL; l = l->next) | |
7702 | { | |
7703 | const char **slot; | |
7704 | const char *name = l->function_name; | |
7705 | ||
7706 | /* Allow for some names to be NULL, ignore them. */ | |
7707 | if (name == NULL) | |
7708 | continue; | |
7709 | ||
7710 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
7711 | INSERT); | |
7712 | /* NOTE: We can assume slot != NULL here because xcalloc never returns | |
7713 | NULL. */ | |
7714 | if (*slot != NULL) | |
7715 | { | |
7716 | htab_delete (htab); | |
7717 | return 1; | |
7718 | } | |
7719 | *slot = name; | |
7720 | } | |
7721 | ||
7722 | htab_delete (htab); | |
7723 | return 0; | |
7724 | } | |
7725 | ||
fe3f5fa8 | 7726 | static void |
0d381245 VP |
7727 | update_breakpoint_locations (struct breakpoint *b, |
7728 | struct symtabs_and_lines sals) | |
fe3f5fa8 VP |
7729 | { |
7730 | int i; | |
7731 | char *s; | |
0d381245 VP |
7732 | struct bp_location *existing_locations = b->loc; |
7733 | ||
7734 | /* If there's no new locations, and all existing locations | |
7735 | are pending, don't do anything. This optimizes | |
7736 | the common case where all locations are in the same | |
7737 | shared library, that was unloaded. We'd like to | |
7738 | retain the location, so that when the library | |
7739 | is loaded again, we don't loose the enabled/disabled | |
7740 | status of the individual locations. */ | |
7741 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) | |
fe3f5fa8 VP |
7742 | return; |
7743 | ||
fe3f5fa8 VP |
7744 | b->loc = NULL; |
7745 | ||
0d381245 | 7746 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 7747 | { |
0d381245 | 7748 | struct bp_location *new_loc = |
39d61571 | 7749 | add_location_to_breakpoint (b, &(sals.sals[i])); |
fe3f5fa8 | 7750 | |
0d381245 VP |
7751 | /* Reparse conditions, they might contain references to the |
7752 | old symtab. */ | |
7753 | if (b->cond_string != NULL) | |
7754 | { | |
7755 | struct gdb_exception e; | |
fe3f5fa8 | 7756 | |
0d381245 VP |
7757 | s = b->cond_string; |
7758 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
7759 | { | |
7760 | new_loc->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), | |
7761 | 0); | |
7762 | } | |
7763 | if (e.reason < 0) | |
7764 | { | |
7765 | warning (_("failed to reevaluate condition for breakpoint %d: %s"), | |
7766 | b->number, e.message); | |
7767 | new_loc->enabled = 0; | |
7768 | } | |
7769 | } | |
fe3f5fa8 | 7770 | |
0d381245 VP |
7771 | if (b->source_file != NULL) |
7772 | xfree (b->source_file); | |
7773 | if (sals.sals[i].symtab == NULL) | |
7774 | b->source_file = NULL; | |
7775 | else | |
1b36a34b | 7776 | b->source_file = xstrdup (sals.sals[i].symtab->filename); |
fe3f5fa8 | 7777 | |
0d381245 VP |
7778 | if (b->line_number == 0) |
7779 | b->line_number = sals.sals[i].line; | |
7780 | } | |
fe3f5fa8 | 7781 | |
514f746b AR |
7782 | /* Update locations of permanent breakpoints. */ |
7783 | if (b->enable_state == bp_permanent) | |
7784 | make_breakpoint_permanent (b); | |
7785 | ||
0d381245 VP |
7786 | /* If possible, carry over 'disable' status from existing breakpoints. */ |
7787 | { | |
7788 | struct bp_location *e = existing_locations; | |
776592bf DE |
7789 | /* If there are multiple breakpoints with the same function name, |
7790 | e.g. for inline functions, comparing function names won't work. | |
7791 | Instead compare pc addresses; this is just a heuristic as things | |
7792 | may have moved, but in practice it gives the correct answer | |
7793 | often enough until a better solution is found. */ | |
7794 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
7795 | ||
0d381245 VP |
7796 | for (; e; e = e->next) |
7797 | { | |
7798 | if (!e->enabled && e->function_name) | |
7799 | { | |
7800 | struct bp_location *l = b->loc; | |
776592bf DE |
7801 | if (have_ambiguous_names) |
7802 | { | |
7803 | for (; l; l = l->next) | |
7804 | if (e->address == l->address) | |
7805 | { | |
7806 | l->enabled = 0; | |
7807 | break; | |
7808 | } | |
7809 | } | |
7810 | else | |
7811 | { | |
7812 | for (; l; l = l->next) | |
7813 | if (l->function_name | |
7814 | && strcmp (e->function_name, l->function_name) == 0) | |
7815 | { | |
7816 | l->enabled = 0; | |
7817 | break; | |
7818 | } | |
7819 | } | |
0d381245 VP |
7820 | } |
7821 | } | |
7822 | } | |
fe3f5fa8 | 7823 | |
b60e7edf | 7824 | update_global_location_list (1); |
fe3f5fa8 VP |
7825 | } |
7826 | ||
7827 | ||
c906108c SS |
7828 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
7829 | The value we return ends up being the return value from catch_errors. | |
7830 | Unused in this case. */ | |
7831 | ||
7832 | static int | |
4efb68b1 | 7833 | breakpoint_re_set_one (void *bint) |
c906108c | 7834 | { |
53a5351d JM |
7835 | /* get past catch_errs */ |
7836 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
7837 | struct value *mark; |
7838 | int i; | |
fe3f5fa8 VP |
7839 | int not_found = 0; |
7840 | int *not_found_ptr = ¬_found; | |
7841 | struct symtabs_and_lines sals = {}; | |
ed0616c6 | 7842 | struct symtabs_and_lines expanded; |
c906108c | 7843 | char *s; |
b5de0fa7 | 7844 | enum enable_state save_enable; |
fe3f5fa8 | 7845 | struct gdb_exception e; |
f7545552 | 7846 | struct cleanup *cleanups; |
c906108c SS |
7847 | |
7848 | switch (b->type) | |
7849 | { | |
7850 | case bp_none: | |
8a3fe4f8 | 7851 | warning (_("attempted to reset apparently deleted breakpoint #%d?"), |
53a5351d | 7852 | b->number); |
c906108c SS |
7853 | return 0; |
7854 | case bp_breakpoint: | |
7855 | case bp_hardware_breakpoint: | |
1042e4c0 | 7856 | case bp_tracepoint: |
8bea4e01 UW |
7857 | /* Do not attempt to re-set breakpoints disabled during startup. */ |
7858 | if (b->enable_state == bp_startup_disabled) | |
7859 | return 0; | |
7860 | ||
c906108c SS |
7861 | if (b->addr_string == NULL) |
7862 | { | |
7863 | /* Anything without a string can't be re-set. */ | |
7864 | delete_breakpoint (b); | |
7865 | return 0; | |
7866 | } | |
c906108c SS |
7867 | |
7868 | set_language (b->language); | |
7869 | input_radix = b->input_radix; | |
7870 | s = b->addr_string; | |
fe3f5fa8 | 7871 | TRY_CATCH (e, RETURN_MASK_ERROR) |
c906108c | 7872 | { |
fe3f5fa8 VP |
7873 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, |
7874 | not_found_ptr); | |
7875 | } | |
7876 | if (e.reason < 0) | |
7877 | { | |
7878 | int not_found_and_ok = 0; | |
7879 | /* For pending breakpoints, it's expected that parsing | |
7880 | will fail until the right shared library is loaded. | |
7881 | User has already told to create pending breakpoints and | |
7882 | don't need extra messages. If breakpoint is in bp_shlib_disabled | |
7883 | state, then user already saw the message about that breakpoint | |
7884 | being disabled, and don't want to see more errors. */ | |
0d381245 VP |
7885 | if (not_found |
7886 | && (b->condition_not_parsed | |
7887 | || (b->loc && b->loc->shlib_disabled) | |
7888 | || b->enable_state == bp_disabled)) | |
fe3f5fa8 VP |
7889 | not_found_and_ok = 1; |
7890 | ||
7891 | if (!not_found_and_ok) | |
c906108c | 7892 | { |
fe3f5fa8 VP |
7893 | /* We surely don't want to warn about the same breakpoint |
7894 | 10 times. One solution, implemented here, is disable | |
7895 | the breakpoint on error. Another solution would be to | |
7896 | have separate 'warning emitted' flag. Since this | |
7897 | happens only when a binary has changed, I don't know | |
7898 | which approach is better. */ | |
7899 | b->enable_state = bp_disabled; | |
7900 | throw_exception (e); | |
c906108c | 7901 | } |
fe3f5fa8 | 7902 | } |
c906108c | 7903 | |
fe3f5fa8 VP |
7904 | if (not_found) |
7905 | break; | |
7906 | ||
7907 | gdb_assert (sals.nelts == 1); | |
7908 | resolve_sal_pc (&sals.sals[0]); | |
0d381245 | 7909 | if (b->condition_not_parsed && s && s[0]) |
fe3f5fa8 VP |
7910 | { |
7911 | char *cond_string = 0; | |
7912 | int thread = -1; | |
4a306c9a JB |
7913 | int task = 0; |
7914 | ||
fe3f5fa8 | 7915 | find_condition_and_thread (s, sals.sals[0].pc, |
4a306c9a | 7916 | &cond_string, &thread, &task); |
fe3f5fa8 VP |
7917 | if (cond_string) |
7918 | b->cond_string = cond_string; | |
7919 | b->thread = thread; | |
4a306c9a | 7920 | b->task = task; |
0d381245 | 7921 | b->condition_not_parsed = 0; |
fe3f5fa8 | 7922 | } |
ed0616c6 | 7923 | expanded = expand_line_sal_maybe (sals.sals[0]); |
f7545552 | 7924 | cleanups = make_cleanup (xfree, sals.sals); |
ed0616c6 | 7925 | update_breakpoint_locations (b, expanded); |
f7545552 | 7926 | do_cleanups (cleanups); |
c906108c SS |
7927 | break; |
7928 | ||
7929 | case bp_watchpoint: | |
7930 | case bp_hardware_watchpoint: | |
7931 | case bp_read_watchpoint: | |
7932 | case bp_access_watchpoint: | |
0b3de036 VP |
7933 | /* Watchpoint can be either on expression using entirely global variables, |
7934 | or it can be on local variables. | |
7935 | ||
7936 | Watchpoints of the first kind are never auto-deleted, and even persist | |
7937 | across program restarts. Since they can use variables from shared | |
7938 | libraries, we need to reparse expression as libraries are loaded | |
7939 | and unloaded. | |
7940 | ||
7941 | Watchpoints on local variables can also change meaning as result | |
7942 | of solib event. For example, if a watchpoint uses both a local and | |
7943 | a global variables in expression, it's a local watchpoint, but | |
7944 | unloading of a shared library will make the expression invalid. | |
7945 | This is not a very common use case, but we still re-evaluate | |
7946 | expression, to avoid surprises to the user. | |
7947 | ||
7948 | Note that for local watchpoints, we re-evaluate it only if | |
7949 | watchpoints frame id is still valid. If it's not, it means | |
7950 | the watchpoint is out of scope and will be deleted soon. In fact, | |
7951 | I'm not sure we'll ever be called in this case. | |
7952 | ||
7953 | If a local watchpoint's frame id is still valid, then | |
7954 | b->exp_valid_block is likewise valid, and we can safely use it. | |
7955 | ||
7956 | Don't do anything about disabled watchpoints, since they will | |
7957 | be reevaluated again when enabled. */ | |
a5606eee | 7958 | update_watchpoint (b, 1 /* reparse */); |
c906108c | 7959 | break; |
c5aa993b JM |
7960 | /* We needn't really do anything to reset these, since the mask |
7961 | that requests them is unaffected by e.g., new libraries being | |
7962 | loaded. */ | |
ce78b96d | 7963 | case bp_catchpoint: |
c906108c | 7964 | break; |
c5aa993b | 7965 | |
c906108c | 7966 | default: |
a3f17187 | 7967 | printf_filtered (_("Deleting unknown breakpoint type %d\n"), b->type); |
c906108c | 7968 | /* fall through */ |
0fd8e87f UW |
7969 | /* Delete overlay event and longjmp master breakpoints; they will be |
7970 | reset later by breakpoint_re_set. */ | |
1900040c | 7971 | case bp_overlay_event: |
0fd8e87f | 7972 | case bp_longjmp_master: |
c906108c SS |
7973 | delete_breakpoint (b); |
7974 | break; | |
7975 | ||
c5aa993b JM |
7976 | /* This breakpoint is special, it's set up when the inferior |
7977 | starts and we really don't want to touch it. */ | |
c906108c SS |
7978 | case bp_shlib_event: |
7979 | ||
c4093a6a JM |
7980 | /* Like bp_shlib_event, this breakpoint type is special. |
7981 | Once it is set up, we do not want to touch it. */ | |
7982 | case bp_thread_event: | |
7983 | ||
c5aa993b JM |
7984 | /* Keep temporary breakpoints, which can be encountered when we step |
7985 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7986 | Otherwise these should have been blown away via the cleanup chain | |
7987 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7988 | case bp_until: |
7989 | case bp_finish: | |
7990 | case bp_watchpoint_scope: | |
7991 | case bp_call_dummy: | |
7992 | case bp_step_resume: | |
611c83ae PA |
7993 | case bp_longjmp: |
7994 | case bp_longjmp_resume: | |
c906108c SS |
7995 | break; |
7996 | } | |
7997 | ||
7998 | return 0; | |
7999 | } | |
8000 | ||
69de3c6a | 8001 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 8002 | void |
69de3c6a | 8003 | breakpoint_re_set (void) |
c906108c SS |
8004 | { |
8005 | struct breakpoint *b, *temp; | |
8006 | enum language save_language; | |
8007 | int save_input_radix; | |
c5aa993b | 8008 | |
c906108c SS |
8009 | save_language = current_language->la_language; |
8010 | save_input_radix = input_radix; | |
8011 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 8012 | { |
53a5351d | 8013 | /* Format possible error msg */ |
fe3f5fa8 | 8014 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
8015 | b->number); |
8016 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 8017 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 8018 | do_cleanups (cleanups); |
c5aa993b | 8019 | } |
c906108c SS |
8020 | set_language (save_language); |
8021 | input_radix = save_input_radix; | |
e62c965a | 8022 | |
69de3c6a | 8023 | create_overlay_event_breakpoint ("_ovly_debug_event"); |
0fd8e87f UW |
8024 | create_longjmp_master_breakpoint ("longjmp"); |
8025 | create_longjmp_master_breakpoint ("_longjmp"); | |
8026 | create_longjmp_master_breakpoint ("siglongjmp"); | |
8027 | create_longjmp_master_breakpoint ("_siglongjmp"); | |
c906108c SS |
8028 | } |
8029 | \f | |
c906108c SS |
8030 | /* Reset the thread number of this breakpoint: |
8031 | ||
8032 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 8033 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 8034 | void |
fba45db2 | 8035 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
8036 | { |
8037 | if (b->thread != -1) | |
8038 | { | |
39f77062 KB |
8039 | if (in_thread_list (inferior_ptid)) |
8040 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
8041 | } |
8042 | } | |
8043 | ||
03ac34d5 MS |
8044 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
8045 | If from_tty is nonzero, it prints a message to that effect, | |
8046 | which ends with a period (no newline). */ | |
8047 | ||
c906108c | 8048 | void |
fba45db2 | 8049 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 8050 | { |
52f0bd74 | 8051 | struct breakpoint *b; |
c906108c SS |
8052 | |
8053 | if (count < 0) | |
8054 | count = 0; | |
8055 | ||
8056 | ALL_BREAKPOINTS (b) | |
8057 | if (b->number == bptnum) | |
c5aa993b JM |
8058 | { |
8059 | b->ignore_count = count; | |
221ea385 KS |
8060 | if (from_tty) |
8061 | { | |
8062 | if (count == 0) | |
a3f17187 | 8063 | printf_filtered (_("Will stop next time breakpoint %d is reached."), |
221ea385 KS |
8064 | bptnum); |
8065 | else if (count == 1) | |
a3f17187 | 8066 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
8067 | bptnum); |
8068 | else | |
a3f17187 | 8069 | printf_filtered (_("Will ignore next %d crossings of breakpoint %d."), |
221ea385 KS |
8070 | count, bptnum); |
8071 | } | |
c5aa993b | 8072 | breakpoints_changed (); |
383f836e | 8073 | observer_notify_breakpoint_modified (b->number); |
c5aa993b JM |
8074 | return; |
8075 | } | |
c906108c | 8076 | |
8a3fe4f8 | 8077 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
8078 | } |
8079 | ||
b2175913 MS |
8080 | void |
8081 | make_breakpoint_silent (struct breakpoint *b) | |
8082 | { | |
8083 | /* Silence the breakpoint. */ | |
8084 | b->silent = 1; | |
8085 | } | |
8086 | ||
c906108c SS |
8087 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
8088 | ||
8089 | static void | |
fba45db2 | 8090 | ignore_command (char *args, int from_tty) |
c906108c SS |
8091 | { |
8092 | char *p = args; | |
52f0bd74 | 8093 | int num; |
c906108c SS |
8094 | |
8095 | if (p == 0) | |
e2e0b3e5 | 8096 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 8097 | |
c906108c | 8098 | num = get_number (&p); |
5c44784c | 8099 | if (num == 0) |
8a3fe4f8 | 8100 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 8101 | if (*p == 0) |
8a3fe4f8 | 8102 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
8103 | |
8104 | set_ignore_count (num, | |
8105 | longest_to_int (value_as_long (parse_and_eval (p))), | |
8106 | from_tty); | |
221ea385 KS |
8107 | if (from_tty) |
8108 | printf_filtered ("\n"); | |
c906108c SS |
8109 | } |
8110 | \f | |
8111 | /* Call FUNCTION on each of the breakpoints | |
8112 | whose numbers are given in ARGS. */ | |
8113 | ||
8114 | static void | |
831662b3 | 8115 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) |
c906108c | 8116 | { |
52f0bd74 | 8117 | char *p = args; |
c906108c | 8118 | char *p1; |
52f0bd74 AC |
8119 | int num; |
8120 | struct breakpoint *b, *tmp; | |
11cf8741 | 8121 | int match; |
c906108c SS |
8122 | |
8123 | if (p == 0) | |
e2e0b3e5 | 8124 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c SS |
8125 | |
8126 | while (*p) | |
8127 | { | |
11cf8741 | 8128 | match = 0; |
c906108c | 8129 | p1 = p; |
c5aa993b | 8130 | |
5c44784c JM |
8131 | num = get_number_or_range (&p1); |
8132 | if (num == 0) | |
c5aa993b | 8133 | { |
8a3fe4f8 | 8134 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
8135 | } |
8136 | else | |
8137 | { | |
8138 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
8139 | if (b->number == num) | |
8140 | { | |
8141 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 8142 | match = 1; |
5c44784c JM |
8143 | function (b); |
8144 | if (related_breakpoint) | |
8145 | function (related_breakpoint); | |
11cf8741 | 8146 | break; |
5c44784c | 8147 | } |
11cf8741 | 8148 | if (match == 0) |
a3f17187 | 8149 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 8150 | } |
c906108c SS |
8151 | p = p1; |
8152 | } | |
8153 | } | |
8154 | ||
0d381245 VP |
8155 | static struct bp_location * |
8156 | find_location_by_number (char *number) | |
8157 | { | |
8158 | char *dot = strchr (number, '.'); | |
8159 | char *p1; | |
8160 | int bp_num; | |
8161 | int loc_num; | |
8162 | struct breakpoint *b; | |
8163 | struct bp_location *loc; | |
8164 | ||
8165 | *dot = '\0'; | |
8166 | ||
8167 | p1 = number; | |
8168 | bp_num = get_number_or_range (&p1); | |
8169 | if (bp_num == 0) | |
8170 | error (_("Bad breakpoint number '%s'"), number); | |
8171 | ||
8172 | ALL_BREAKPOINTS (b) | |
8173 | if (b->number == bp_num) | |
8174 | { | |
8175 | break; | |
8176 | } | |
8177 | ||
8178 | if (!b || b->number != bp_num) | |
8179 | error (_("Bad breakpoint number '%s'"), number); | |
8180 | ||
8181 | p1 = dot+1; | |
8182 | loc_num = get_number_or_range (&p1); | |
8183 | if (loc_num == 0) | |
8184 | error (_("Bad breakpoint location number '%s'"), number); | |
8185 | ||
8186 | --loc_num; | |
8187 | loc = b->loc; | |
8188 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
8189 | ; | |
8190 | if (!loc) | |
8191 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
8192 | ||
8193 | return loc; | |
8194 | } | |
8195 | ||
8196 | ||
1900040c MS |
8197 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
8198 | If from_tty is nonzero, it prints a message to that effect, | |
8199 | which ends with a period (no newline). */ | |
8200 | ||
c906108c | 8201 | void |
fba45db2 | 8202 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
8203 | { |
8204 | /* Never disable a watchpoint scope breakpoint; we want to | |
8205 | hit them when we leave scope so we can delete both the | |
8206 | watchpoint and its scope breakpoint at that time. */ | |
8207 | if (bpt->type == bp_watchpoint_scope) | |
8208 | return; | |
8209 | ||
c2c6d25f | 8210 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 8211 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
8212 | return; |
8213 | ||
b5de0fa7 | 8214 | bpt->enable_state = bp_disabled; |
c906108c | 8215 | |
b60e7edf | 8216 | update_global_location_list (0); |
c906108c | 8217 | |
383f836e | 8218 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
8219 | } |
8220 | ||
c906108c | 8221 | static void |
fba45db2 | 8222 | disable_command (char *args, int from_tty) |
c906108c | 8223 | { |
52f0bd74 | 8224 | struct breakpoint *bpt; |
c906108c SS |
8225 | if (args == 0) |
8226 | ALL_BREAKPOINTS (bpt) | |
8227 | switch (bpt->type) | |
c5aa993b JM |
8228 | { |
8229 | case bp_none: | |
8a3fe4f8 | 8230 | warning (_("attempted to disable apparently deleted breakpoint #%d?"), |
53a5351d | 8231 | bpt->number); |
c5aa993b JM |
8232 | continue; |
8233 | case bp_breakpoint: | |
1042e4c0 | 8234 | case bp_tracepoint: |
ce78b96d | 8235 | case bp_catchpoint: |
c5aa993b JM |
8236 | case bp_hardware_breakpoint: |
8237 | case bp_watchpoint: | |
8238 | case bp_hardware_watchpoint: | |
8239 | case bp_read_watchpoint: | |
8240 | case bp_access_watchpoint: | |
8241 | disable_breakpoint (bpt); | |
8242 | default: | |
8243 | continue; | |
8244 | } | |
0d381245 VP |
8245 | else if (strchr (args, '.')) |
8246 | { | |
8247 | struct bp_location *loc = find_location_by_number (args); | |
8248 | if (loc) | |
8249 | loc->enabled = 0; | |
b60e7edf | 8250 | update_global_location_list (0); |
0d381245 | 8251 | } |
c906108c SS |
8252 | else |
8253 | map_breakpoint_numbers (args, disable_breakpoint); | |
8254 | } | |
8255 | ||
8256 | static void | |
fba45db2 | 8257 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 8258 | { |
c906108c SS |
8259 | int target_resources_ok, other_type_used; |
8260 | struct value *mark; | |
8261 | ||
8262 | if (bpt->type == bp_hardware_breakpoint) | |
8263 | { | |
8264 | int i; | |
c5aa993b | 8265 | i = hw_breakpoint_used_count (); |
53a5351d | 8266 | target_resources_ok = |
d92524f1 | 8267 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 8268 | i + 1, 0); |
c906108c | 8269 | if (target_resources_ok == 0) |
8a3fe4f8 | 8270 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 8271 | else if (target_resources_ok < 0) |
8a3fe4f8 | 8272 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
8273 | } |
8274 | ||
059fb39f PM |
8275 | if (bpt->type == bp_watchpoint |
8276 | || bpt->type == bp_hardware_watchpoint | |
8277 | || bpt->type == bp_read_watchpoint | |
8278 | || bpt->type == bp_access_watchpoint) | |
c906108c | 8279 | { |
dde02812 ES |
8280 | struct gdb_exception e; |
8281 | ||
8282 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 8283 | { |
dde02812 | 8284 | update_watchpoint (bpt, 1 /* reparse */); |
c906108c | 8285 | } |
dde02812 | 8286 | if (e.reason < 0) |
c5aa993b | 8287 | { |
dde02812 ES |
8288 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
8289 | bpt->number); | |
8290 | return; | |
c5aa993b | 8291 | } |
c906108c | 8292 | } |
0101ce28 | 8293 | |
b4c291bb KH |
8294 | if (bpt->enable_state != bp_permanent) |
8295 | bpt->enable_state = bp_enabled; | |
8296 | bpt->disposition = disposition; | |
b60e7edf | 8297 | update_global_location_list (1); |
b4c291bb KH |
8298 | breakpoints_changed (); |
8299 | ||
383f836e | 8300 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
8301 | } |
8302 | ||
fe3f5fa8 | 8303 | |
c906108c | 8304 | void |
fba45db2 | 8305 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
8306 | { |
8307 | do_enable_breakpoint (bpt, bpt->disposition); | |
8308 | } | |
8309 | ||
8310 | /* The enable command enables the specified breakpoints (or all defined | |
8311 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 8312 | in stopping the inferior. */ |
c906108c | 8313 | |
c906108c | 8314 | static void |
fba45db2 | 8315 | enable_command (char *args, int from_tty) |
c906108c | 8316 | { |
52f0bd74 | 8317 | struct breakpoint *bpt; |
c906108c SS |
8318 | if (args == 0) |
8319 | ALL_BREAKPOINTS (bpt) | |
8320 | switch (bpt->type) | |
c5aa993b JM |
8321 | { |
8322 | case bp_none: | |
8a3fe4f8 | 8323 | warning (_("attempted to enable apparently deleted breakpoint #%d?"), |
53a5351d | 8324 | bpt->number); |
c5aa993b JM |
8325 | continue; |
8326 | case bp_breakpoint: | |
1042e4c0 | 8327 | case bp_tracepoint: |
ce78b96d | 8328 | case bp_catchpoint: |
c5aa993b JM |
8329 | case bp_hardware_breakpoint: |
8330 | case bp_watchpoint: | |
8331 | case bp_hardware_watchpoint: | |
8332 | case bp_read_watchpoint: | |
8333 | case bp_access_watchpoint: | |
8334 | enable_breakpoint (bpt); | |
8335 | default: | |
8336 | continue; | |
8337 | } | |
0d381245 VP |
8338 | else if (strchr (args, '.')) |
8339 | { | |
8340 | struct bp_location *loc = find_location_by_number (args); | |
8341 | if (loc) | |
8342 | loc->enabled = 1; | |
b60e7edf | 8343 | update_global_location_list (1); |
0d381245 | 8344 | } |
c906108c SS |
8345 | else |
8346 | map_breakpoint_numbers (args, enable_breakpoint); | |
8347 | } | |
8348 | ||
8349 | static void | |
fba45db2 | 8350 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c | 8351 | { |
b5de0fa7 | 8352 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
8353 | } |
8354 | ||
c906108c | 8355 | static void |
fba45db2 | 8356 | enable_once_command (char *args, int from_tty) |
c906108c SS |
8357 | { |
8358 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
8359 | } | |
8360 | ||
8361 | static void | |
fba45db2 | 8362 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c | 8363 | { |
b5de0fa7 | 8364 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
8365 | } |
8366 | ||
c906108c | 8367 | static void |
fba45db2 | 8368 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
8369 | { |
8370 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
8371 | } | |
8372 | \f | |
fa8d40ab JJ |
8373 | static void |
8374 | set_breakpoint_cmd (char *args, int from_tty) | |
8375 | { | |
8376 | } | |
8377 | ||
8378 | static void | |
8379 | show_breakpoint_cmd (char *args, int from_tty) | |
8380 | { | |
8381 | } | |
8382 | ||
c906108c SS |
8383 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
8384 | ||
8385 | struct symtabs_and_lines | |
fba45db2 | 8386 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
8387 | { |
8388 | struct symtabs_and_lines sals; | |
8389 | if (string == 0) | |
8a3fe4f8 | 8390 | error (_("Empty line specification.")); |
c906108c SS |
8391 | if (default_breakpoint_valid) |
8392 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
8393 | default_breakpoint_symtab, |
8394 | default_breakpoint_line, | |
68219205 | 8395 | (char ***) NULL, NULL); |
c906108c SS |
8396 | else |
8397 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 8398 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c | 8399 | if (*string) |
8a3fe4f8 | 8400 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
8401 | return sals; |
8402 | } | |
8181d85f DJ |
8403 | |
8404 | /* Create and insert a raw software breakpoint at PC. Return an | |
8405 | identifier, which should be used to remove the breakpoint later. | |
8406 | In general, places which call this should be using something on the | |
8407 | breakpoint chain instead; this function should be eliminated | |
8408 | someday. */ | |
8409 | ||
8410 | void * | |
a6d9a66e | 8411 | deprecated_insert_raw_breakpoint (struct gdbarch *gdbarch, CORE_ADDR pc) |
8181d85f DJ |
8412 | { |
8413 | struct bp_target_info *bp_tgt; | |
8414 | ||
8415 | bp_tgt = xmalloc (sizeof (struct bp_target_info)); | |
8416 | memset (bp_tgt, 0, sizeof (struct bp_target_info)); | |
8417 | ||
8418 | bp_tgt->placed_address = pc; | |
a6d9a66e | 8419 | if (target_insert_breakpoint (gdbarch, bp_tgt) != 0) |
8181d85f DJ |
8420 | { |
8421 | /* Could not insert the breakpoint. */ | |
8422 | xfree (bp_tgt); | |
8423 | return NULL; | |
8424 | } | |
8425 | ||
8426 | return bp_tgt; | |
8427 | } | |
8428 | ||
8429 | /* Remove a breakpoint BP inserted by deprecated_insert_raw_breakpoint. */ | |
8430 | ||
8431 | int | |
a6d9a66e | 8432 | deprecated_remove_raw_breakpoint (struct gdbarch *gdbarch, void *bp) |
8181d85f DJ |
8433 | { |
8434 | struct bp_target_info *bp_tgt = bp; | |
8435 | int ret; | |
8436 | ||
a6d9a66e | 8437 | ret = target_remove_breakpoint (gdbarch, bp_tgt); |
8181d85f DJ |
8438 | xfree (bp_tgt); |
8439 | ||
8440 | return ret; | |
8441 | } | |
8442 | ||
8443 | /* One (or perhaps two) breakpoints used for software single stepping. */ | |
8444 | ||
8445 | static void *single_step_breakpoints[2]; | |
a6d9a66e | 8446 | static struct gdbarch *single_step_gdbarch[2]; |
8181d85f DJ |
8447 | |
8448 | /* Create and insert a breakpoint for software single step. */ | |
8449 | ||
8450 | void | |
a6d9a66e | 8451 | insert_single_step_breakpoint (struct gdbarch *gdbarch, CORE_ADDR next_pc) |
8181d85f DJ |
8452 | { |
8453 | void **bpt_p; | |
8454 | ||
8455 | if (single_step_breakpoints[0] == NULL) | |
a6d9a66e UW |
8456 | { |
8457 | bpt_p = &single_step_breakpoints[0]; | |
8458 | single_step_gdbarch[0] = gdbarch; | |
8459 | } | |
8181d85f DJ |
8460 | else |
8461 | { | |
8462 | gdb_assert (single_step_breakpoints[1] == NULL); | |
8463 | bpt_p = &single_step_breakpoints[1]; | |
a6d9a66e | 8464 | single_step_gdbarch[1] = gdbarch; |
8181d85f DJ |
8465 | } |
8466 | ||
8467 | /* NOTE drow/2006-04-11: A future improvement to this function would be | |
8468 | to only create the breakpoints once, and actually put them on the | |
8469 | breakpoint chain. That would let us use set_raw_breakpoint. We could | |
8470 | adjust the addresses each time they were needed. Doing this requires | |
8471 | corresponding changes elsewhere where single step breakpoints are | |
8472 | handled, however. So, for now, we use this. */ | |
8473 | ||
a6d9a66e | 8474 | *bpt_p = deprecated_insert_raw_breakpoint (gdbarch, next_pc); |
8181d85f | 8475 | if (*bpt_p == NULL) |
5af949e3 UW |
8476 | error (_("Could not insert single-step breakpoint at %s"), |
8477 | paddress (gdbarch, next_pc)); | |
8181d85f DJ |
8478 | } |
8479 | ||
8480 | /* Remove and delete any breakpoints used for software single step. */ | |
8481 | ||
8482 | void | |
8483 | remove_single_step_breakpoints (void) | |
8484 | { | |
8485 | gdb_assert (single_step_breakpoints[0] != NULL); | |
8486 | ||
8487 | /* See insert_single_step_breakpoint for more about this deprecated | |
8488 | call. */ | |
a6d9a66e UW |
8489 | deprecated_remove_raw_breakpoint (single_step_gdbarch[0], |
8490 | single_step_breakpoints[0]); | |
8491 | single_step_gdbarch[0] = NULL; | |
8181d85f DJ |
8492 | single_step_breakpoints[0] = NULL; |
8493 | ||
8494 | if (single_step_breakpoints[1] != NULL) | |
8495 | { | |
a6d9a66e UW |
8496 | deprecated_remove_raw_breakpoint (single_step_gdbarch[1], |
8497 | single_step_breakpoints[1]); | |
8498 | single_step_gdbarch[1] = NULL; | |
8181d85f DJ |
8499 | single_step_breakpoints[1] = NULL; |
8500 | } | |
8501 | } | |
8502 | ||
1aafd4da UW |
8503 | /* Check whether a software single-step breakpoint is inserted at PC. */ |
8504 | ||
8505 | static int | |
8506 | single_step_breakpoint_inserted_here_p (CORE_ADDR pc) | |
8507 | { | |
8508 | int i; | |
8509 | ||
8510 | for (i = 0; i < 2; i++) | |
8511 | { | |
8512 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
8513 | if (bp_tgt && bp_tgt->placed_address == pc) | |
8514 | return 1; | |
8515 | } | |
8516 | ||
8517 | return 0; | |
8518 | } | |
8519 | ||
1042e4c0 SS |
8520 | /* Tracepoint-specific operations. */ |
8521 | ||
8522 | /* Set tracepoint count to NUM. */ | |
8523 | static void | |
8524 | set_tracepoint_count (int num) | |
8525 | { | |
8526 | tracepoint_count = num; | |
4fa62494 | 8527 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
8528 | } |
8529 | ||
8530 | void | |
8531 | trace_command (char *arg, int from_tty) | |
8532 | { | |
a6d9a66e UW |
8533 | break_command_really (get_current_arch (), |
8534 | arg, | |
1042e4c0 SS |
8535 | NULL, 0, 1 /* parse arg */, |
8536 | 0 /* tempflag */, 0 /* hardwareflag */, | |
8537 | 1 /* traceflag */, | |
8538 | 0 /* Ignore count */, | |
8539 | pending_break_support, | |
8540 | NULL, | |
8541 | from_tty, | |
8542 | 1 /* enabled */); | |
8543 | set_tracepoint_count (breakpoint_count); | |
8544 | } | |
8545 | ||
8546 | /* Print information on tracepoint number TPNUM_EXP, or all if | |
8547 | omitted. */ | |
8548 | ||
8549 | static void | |
8550 | tracepoints_info (char *tpnum_exp, int from_tty) | |
8551 | { | |
8552 | struct breakpoint *b; | |
8553 | int tps_to_list = 0; | |
8554 | ||
8555 | /* In the no-arguments case, say "No tracepoints" if none found. */ | |
8556 | if (tpnum_exp == 0) | |
8557 | { | |
8558 | ALL_TRACEPOINTS (b) | |
8559 | { | |
8560 | if (b->number >= 0) | |
8561 | { | |
8562 | tps_to_list = 1; | |
8563 | break; | |
8564 | } | |
8565 | } | |
8566 | if (!tps_to_list) | |
8567 | { | |
8568 | ui_out_message (uiout, 0, "No tracepoints.\n"); | |
8569 | return; | |
8570 | } | |
8571 | } | |
8572 | ||
8573 | /* Otherwise be the same as "info break". */ | |
8574 | breakpoints_info (tpnum_exp, from_tty); | |
8575 | } | |
8576 | ||
8577 | /* The 'enable trace' command enables tracepoints. | |
8578 | Not supported by all targets. */ | |
8579 | static void | |
8580 | enable_trace_command (char *args, int from_tty) | |
8581 | { | |
8582 | enable_command (args, from_tty); | |
8583 | } | |
8584 | ||
8585 | /* The 'disable trace' command disables tracepoints. | |
8586 | Not supported by all targets. */ | |
8587 | static void | |
8588 | disable_trace_command (char *args, int from_tty) | |
8589 | { | |
8590 | disable_command (args, from_tty); | |
8591 | } | |
8592 | ||
8593 | /* Remove a tracepoint (or all if no argument) */ | |
8594 | static void | |
8595 | delete_trace_command (char *arg, int from_tty) | |
8596 | { | |
8597 | struct breakpoint *b, *temp; | |
8598 | ||
8599 | dont_repeat (); | |
8600 | ||
8601 | if (arg == 0) | |
8602 | { | |
8603 | int breaks_to_delete = 0; | |
8604 | ||
8605 | /* Delete all breakpoints if no argument. | |
8606 | Do not delete internal or call-dummy breakpoints, these | |
8607 | have to be deleted with an explicit breakpoint number argument. */ | |
8608 | ALL_TRACEPOINTS (b) | |
8609 | { | |
8610 | if (b->number >= 0) | |
8611 | { | |
8612 | breaks_to_delete = 1; | |
8613 | break; | |
8614 | } | |
8615 | } | |
8616 | ||
8617 | /* Ask user only if there are some breakpoints to delete. */ | |
8618 | if (!from_tty | |
8619 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
8620 | { | |
8621 | ALL_BREAKPOINTS_SAFE (b, temp) | |
8622 | { | |
059fb39f PM |
8623 | if (b->type == bp_tracepoint |
8624 | && b->number >= 0) | |
1042e4c0 SS |
8625 | delete_breakpoint (b); |
8626 | } | |
8627 | } | |
8628 | } | |
8629 | else | |
8630 | map_breakpoint_numbers (arg, delete_breakpoint); | |
8631 | } | |
8632 | ||
8633 | /* Set passcount for tracepoint. | |
8634 | ||
8635 | First command argument is passcount, second is tracepoint number. | |
8636 | If tracepoint number omitted, apply to most recently defined. | |
8637 | Also accepts special argument "all". */ | |
8638 | ||
8639 | static void | |
8640 | trace_pass_command (char *args, int from_tty) | |
8641 | { | |
8642 | struct breakpoint *t1 = (struct breakpoint *) -1, *t2; | |
8643 | unsigned int count; | |
8644 | int all = 0; | |
8645 | ||
8646 | if (args == 0 || *args == 0) | |
8647 | error (_("passcount command requires an argument (count + optional TP num)")); | |
8648 | ||
8649 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ | |
8650 | ||
8651 | while (*args && isspace ((int) *args)) | |
8652 | args++; | |
8653 | ||
8654 | if (*args && strncasecmp (args, "all", 3) == 0) | |
8655 | { | |
8656 | args += 3; /* Skip special argument "all". */ | |
8657 | all = 1; | |
8658 | if (*args) | |
8659 | error (_("Junk at end of arguments.")); | |
8660 | } | |
8661 | else | |
8662 | t1 = get_tracepoint_by_number (&args, 1, 1); | |
8663 | ||
8664 | do | |
8665 | { | |
8666 | if (t1) | |
8667 | { | |
8668 | ALL_TRACEPOINTS (t2) | |
8669 | if (t1 == (struct breakpoint *) -1 || t1 == t2) | |
8670 | { | |
8671 | t2->pass_count = count; | |
8672 | observer_notify_tracepoint_modified (t2->number); | |
8673 | if (from_tty) | |
8674 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
8675 | t2->number, count); | |
8676 | } | |
8677 | if (! all && *args) | |
8678 | t1 = get_tracepoint_by_number (&args, 1, 0); | |
8679 | } | |
8680 | } | |
8681 | while (*args); | |
8682 | } | |
8683 | ||
8684 | struct breakpoint * | |
8685 | get_tracepoint (int num) | |
8686 | { | |
8687 | struct breakpoint *t; | |
8688 | ||
8689 | ALL_TRACEPOINTS (t) | |
8690 | if (t->number == num) | |
8691 | return t; | |
8692 | ||
8693 | return NULL; | |
8694 | } | |
8695 | ||
8696 | /* Utility: parse a tracepoint number and look it up in the list. | |
8697 | If MULTI_P is true, there might be a range of tracepoints in ARG. | |
8698 | if OPTIONAL_P is true, then if the argument is missing, the most | |
8699 | recent tracepoint (tracepoint_count) is returned. */ | |
8700 | struct breakpoint * | |
8701 | get_tracepoint_by_number (char **arg, int multi_p, int optional_p) | |
8702 | { | |
8703 | extern int tracepoint_count; | |
8704 | struct breakpoint *t; | |
8705 | int tpnum; | |
8706 | char *instring = arg == NULL ? NULL : *arg; | |
8707 | ||
8708 | if (arg == NULL || *arg == NULL || ! **arg) | |
8709 | { | |
8710 | if (optional_p) | |
8711 | tpnum = tracepoint_count; | |
8712 | else | |
8713 | error_no_arg (_("tracepoint number")); | |
8714 | } | |
8715 | else | |
8716 | tpnum = multi_p ? get_number_or_range (arg) : get_number (arg); | |
8717 | ||
8718 | if (tpnum <= 0) | |
8719 | { | |
8720 | if (instring && *instring) | |
8721 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
8722 | instring); | |
8723 | else | |
8724 | printf_filtered (_("Tracepoint argument missing and no previous tracepoint\n")); | |
8725 | return NULL; | |
8726 | } | |
8727 | ||
8728 | ALL_TRACEPOINTS (t) | |
8729 | if (t->number == tpnum) | |
8730 | { | |
8731 | return t; | |
8732 | } | |
8733 | ||
8734 | /* FIXME: if we are in the middle of a range we don't want to give | |
8735 | a message. The current interface to get_number_or_range doesn't | |
8736 | allow us to discover this. */ | |
8737 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); | |
8738 | return NULL; | |
8739 | } | |
8740 | ||
8741 | /* save-tracepoints command */ | |
8742 | static void | |
8743 | tracepoint_save_command (char *args, int from_tty) | |
8744 | { | |
8745 | struct breakpoint *tp; | |
8746 | int any_tp = 0; | |
8747 | struct action_line *line; | |
8748 | FILE *fp; | |
8749 | char *i1 = " ", *i2 = " "; | |
8750 | char *indent, *actionline, *pathname; | |
8751 | char tmp[40]; | |
8752 | struct cleanup *cleanup; | |
8753 | ||
8754 | if (args == 0 || *args == 0) | |
8755 | error (_("Argument required (file name in which to save tracepoints)")); | |
8756 | ||
8757 | /* See if we have anything to save. */ | |
8758 | ALL_TRACEPOINTS (tp) | |
8759 | { | |
8760 | any_tp = 1; | |
8761 | break; | |
8762 | } | |
8763 | if (!any_tp) | |
8764 | { | |
8765 | warning (_("save-tracepoints: no tracepoints to save.")); | |
8766 | return; | |
8767 | } | |
8768 | ||
8769 | pathname = tilde_expand (args); | |
8770 | cleanup = make_cleanup (xfree, pathname); | |
059fb39f PM |
8771 | fp = fopen (pathname, "w"); |
8772 | if (!fp) | |
1042e4c0 SS |
8773 | error (_("Unable to open file '%s' for saving tracepoints (%s)"), |
8774 | args, safe_strerror (errno)); | |
8775 | make_cleanup_fclose (fp); | |
8776 | ||
8777 | ALL_TRACEPOINTS (tp) | |
8778 | { | |
8779 | if (tp->addr_string) | |
8780 | fprintf (fp, "trace %s\n", tp->addr_string); | |
8781 | else | |
8782 | { | |
8783 | sprintf_vma (tmp, tp->loc->address); | |
8784 | fprintf (fp, "trace *0x%s\n", tmp); | |
8785 | } | |
8786 | ||
8787 | if (tp->pass_count) | |
8788 | fprintf (fp, " passcount %d\n", tp->pass_count); | |
8789 | ||
8790 | if (tp->actions) | |
8791 | { | |
8792 | fprintf (fp, " actions\n"); | |
8793 | indent = i1; | |
8794 | for (line = tp->actions; line; line = line->next) | |
8795 | { | |
8796 | struct cmd_list_element *cmd; | |
8797 | ||
8798 | QUIT; /* allow user to bail out with ^C */ | |
8799 | actionline = line->action; | |
8800 | while (isspace ((int) *actionline)) | |
8801 | actionline++; | |
8802 | ||
8803 | fprintf (fp, "%s%s\n", indent, actionline); | |
8804 | if (*actionline != '#') /* skip for comment lines */ | |
8805 | { | |
8806 | cmd = lookup_cmd (&actionline, cmdlist, "", -1, 1); | |
8807 | if (cmd == 0) | |
8808 | error (_("Bad action list item: %s"), actionline); | |
8809 | if (cmd_cfunc_eq (cmd, while_stepping_pseudocommand)) | |
8810 | indent = i2; | |
8811 | else if (cmd_cfunc_eq (cmd, end_actions_pseudocommand)) | |
8812 | indent = i1; | |
8813 | } | |
8814 | } | |
8815 | } | |
8816 | } | |
8817 | do_cleanups (cleanup); | |
8818 | if (from_tty) | |
8819 | printf_filtered (_("Tracepoints saved to file '%s'.\n"), args); | |
8820 | return; | |
8821 | } | |
8822 | ||
8823 | /* Create a vector of all tracepoints. */ | |
8824 | ||
8825 | VEC(breakpoint_p) * | |
8826 | all_tracepoints () | |
8827 | { | |
8828 | VEC(breakpoint_p) *tp_vec = 0; | |
8829 | struct breakpoint *tp; | |
8830 | ||
8831 | ALL_TRACEPOINTS (tp) | |
8832 | { | |
8833 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
8834 | } | |
8835 | ||
8836 | return tp_vec; | |
8837 | } | |
8838 | ||
c906108c | 8839 | \f |
31e2b00f AS |
8840 | /* This help string is used for the break, hbreak, tbreak and thbreak commands. |
8841 | It is defined as a macro to prevent duplication. | |
8842 | COMMAND should be a string constant containing the name of the command. */ | |
8843 | #define BREAK_ARGS_HELP(command) \ | |
8844 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
8845 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
8846 | If a line number is specified, break at start of code for that line.\n\ | |
8847 | If a function is specified, break at start of code for that function.\n\ | |
8848 | If an address is specified, break at that exact address.\n\ | |
8849 | With no LOCATION, uses current execution address of selected stack frame.\n\ | |
8850 | This is useful for breaking on return to a stack frame.\n\ | |
8851 | \n\ | |
8852 | THREADNUM is the number from \"info threads\".\n\ | |
8853 | CONDITION is a boolean expression.\n\ | |
8854 | \n\ | |
8855 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
8856 | \n\ | |
8857 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
8858 | ||
44feb3ce TT |
8859 | /* List of subcommands for "catch". */ |
8860 | static struct cmd_list_element *catch_cmdlist; | |
8861 | ||
8862 | /* List of subcommands for "tcatch". */ | |
8863 | static struct cmd_list_element *tcatch_cmdlist; | |
8864 | ||
8865 | /* Like add_cmd, but add the command to both the "catch" and "tcatch" | |
8866 | lists, and pass some additional user data to the command function. */ | |
8867 | static void | |
8868 | add_catch_command (char *name, char *docstring, | |
8869 | void (*sfunc) (char *args, int from_tty, | |
8870 | struct cmd_list_element *command), | |
8871 | void *user_data_catch, | |
8872 | void *user_data_tcatch) | |
8873 | { | |
8874 | struct cmd_list_element *command; | |
8875 | ||
8876 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
8877 | &catch_cmdlist); | |
8878 | set_cmd_sfunc (command, sfunc); | |
8879 | set_cmd_context (command, user_data_catch); | |
8880 | ||
8881 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
8882 | &tcatch_cmdlist); | |
8883 | set_cmd_sfunc (command, sfunc); | |
8884 | set_cmd_context (command, user_data_tcatch); | |
8885 | } | |
8886 | ||
c906108c | 8887 | void |
fba45db2 | 8888 | _initialize_breakpoint (void) |
c906108c | 8889 | { |
fa8d40ab JJ |
8890 | static struct cmd_list_element *breakpoint_set_cmdlist; |
8891 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
c906108c SS |
8892 | struct cmd_list_element *c; |
8893 | ||
84acb35a | 8894 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
84acb35a | 8895 | |
c906108c SS |
8896 | breakpoint_chain = 0; |
8897 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
8898 | before a breakpoint is set. */ | |
8899 | breakpoint_count = 0; | |
8900 | ||
1042e4c0 SS |
8901 | tracepoint_count = 0; |
8902 | ||
1bedd215 AC |
8903 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
8904 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
8905 | Usage is `ignore N COUNT'.")); | |
c906108c | 8906 | if (xdb_commands) |
c5aa993b | 8907 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 8908 | |
1bedd215 AC |
8909 | add_com ("commands", class_breakpoint, commands_command, _("\ |
8910 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
8911 | Give breakpoint number as argument after \"commands\".\n\ |
8912 | With no argument, the targeted breakpoint is the last one set.\n\ | |
8913 | The commands themselves follow starting on the next line.\n\ | |
8914 | Type a line containing \"end\" to indicate the end of them.\n\ | |
8915 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 8916 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 8917 | |
1bedd215 AC |
8918 | add_com ("condition", class_breakpoint, condition_command, _("\ |
8919 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 8920 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 8921 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 8922 | |
1bedd215 | 8923 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 8924 | Set a temporary breakpoint.\n\ |
c906108c SS |
8925 | Like \"break\" except the breakpoint is only temporary,\n\ |
8926 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
8927 | by using \"enable delete\" on the breakpoint number.\n\ |
8928 | \n" | |
8929 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 8930 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 8931 | |
1bedd215 | 8932 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
31e2b00f | 8933 | Set a hardware assisted breakpoint.\n\ |
c906108c | 8934 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
8935 | some target hardware may not have this support.\n\ |
8936 | \n" | |
8937 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 8938 | set_cmd_completer (c, location_completer); |
c906108c | 8939 | |
1bedd215 | 8940 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 8941 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 8942 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
8943 | so it will be deleted when hit.\n\ |
8944 | \n" | |
8945 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 8946 | set_cmd_completer (c, location_completer); |
c906108c | 8947 | |
1bedd215 AC |
8948 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
8949 | Enable some breakpoints.\n\ | |
c906108c SS |
8950 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8951 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8952 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8953 | With a subcommand you can enable temporarily."), |
c906108c SS |
8954 | &enablelist, "enable ", 1, &cmdlist); |
8955 | if (xdb_commands) | |
1bedd215 AC |
8956 | add_com ("ab", class_breakpoint, enable_command, _("\ |
8957 | Enable some breakpoints.\n\ | |
c906108c SS |
8958 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8959 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8960 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8961 | With a subcommand you can enable temporarily.")); |
c906108c SS |
8962 | |
8963 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
8964 | ||
1bedd215 AC |
8965 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
8966 | Enable some breakpoints.\n\ | |
c906108c SS |
8967 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8968 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8969 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 8970 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 8971 | |
1a966eab AC |
8972 | add_cmd ("once", no_class, enable_once_command, _("\ |
8973 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8974 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8975 | &enablebreaklist); |
8976 | ||
1a966eab AC |
8977 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8978 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8979 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8980 | &enablebreaklist); |
8981 | ||
1a966eab AC |
8982 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8983 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8984 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8985 | &enablelist); |
8986 | ||
1a966eab AC |
8987 | add_cmd ("once", no_class, enable_once_command, _("\ |
8988 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8989 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8990 | &enablelist); |
8991 | ||
1bedd215 AC |
8992 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
8993 | Disable some breakpoints.\n\ | |
c906108c SS |
8994 | Arguments are breakpoint numbers with spaces in between.\n\ |
8995 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 8996 | A disabled breakpoint is not forgotten, but has no effect until reenabled."), |
c906108c SS |
8997 | &disablelist, "disable ", 1, &cmdlist); |
8998 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
8999 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
9000 | if (xdb_commands) | |
1bedd215 AC |
9001 | add_com ("sb", class_breakpoint, disable_command, _("\ |
9002 | Disable some breakpoints.\n\ | |
c906108c SS |
9003 | Arguments are breakpoint numbers with spaces in between.\n\ |
9004 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 9005 | A disabled breakpoint is not forgotten, but has no effect until reenabled.")); |
c906108c | 9006 | |
1a966eab AC |
9007 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
9008 | Disable some breakpoints.\n\ | |
c906108c SS |
9009 | Arguments are breakpoint numbers with spaces in between.\n\ |
9010 | To disable all breakpoints, give no argument.\n\ | |
9011 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
1a966eab | 9012 | This command may be abbreviated \"disable\"."), |
c906108c SS |
9013 | &disablelist); |
9014 | ||
1bedd215 AC |
9015 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
9016 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
9017 | Arguments are breakpoint numbers with spaces in between.\n\ |
9018 | To delete all breakpoints, give no argument.\n\ | |
9019 | \n\ | |
9020 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 9021 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
9022 | &deletelist, "delete ", 1, &cmdlist); |
9023 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 9024 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 9025 | if (xdb_commands) |
1bedd215 AC |
9026 | add_com ("db", class_breakpoint, delete_command, _("\ |
9027 | Delete some breakpoints.\n\ | |
c906108c | 9028 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 9029 | To delete all breakpoints, give no argument.\n")); |
c906108c | 9030 | |
1a966eab AC |
9031 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
9032 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
9033 | Arguments are breakpoint numbers with spaces in between.\n\ |
9034 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 9035 | This command may be abbreviated \"delete\"."), |
c906108c SS |
9036 | &deletelist); |
9037 | ||
1bedd215 AC |
9038 | add_com ("clear", class_breakpoint, clear_command, _("\ |
9039 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
9040 | Argument may be line number, function name, or \"*\" and an address.\n\ |
9041 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
9042 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
9043 | If an address is specified, breakpoints at that address are cleared.\n\ |
9044 | \n\ | |
9045 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
9046 | is executing in.\n\ |
9047 | \n\ | |
1bedd215 | 9048 | See also the \"delete\" command which clears breakpoints by number.")); |
c906108c | 9049 | |
1bedd215 | 9050 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
9051 | Set breakpoint at specified line or function.\n" |
9052 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 9053 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 9054 | |
c906108c SS |
9055 | add_com_alias ("b", "break", class_run, 1); |
9056 | add_com_alias ("br", "break", class_run, 1); | |
9057 | add_com_alias ("bre", "break", class_run, 1); | |
9058 | add_com_alias ("brea", "break", class_run, 1); | |
9059 | ||
7681d515 PM |
9060 | if (xdb_commands) |
9061 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
c906108c SS |
9062 | |
9063 | if (dbx_commands) | |
9064 | { | |
1bedd215 AC |
9065 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
9066 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
9067 | &stoplist, "stop ", 1, &cmdlist); |
9068 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 9069 | _("Break in function or address."), &stoplist); |
c5aa993b | 9070 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 9071 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
9072 | add_com ("status", class_info, breakpoints_info, _("\ |
9073 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
9074 | The \"Type\" column indicates one of:\n\ |
9075 | \tbreakpoint - normal breakpoint\n\ | |
9076 | \twatchpoint - watchpoint\n\ | |
9077 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
9078 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
9079 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
9080 | address and file/line number respectively.\n\ |
9081 | \n\ | |
9082 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
9083 | are set to the address of the last breakpoint listed unless the command\n\ |
9084 | is prefixed with \"server \".\n\n\ | |
c906108c | 9085 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 9086 | breakpoint set.")); |
c906108c SS |
9087 | } |
9088 | ||
1bedd215 AC |
9089 | add_info ("breakpoints", breakpoints_info, _("\ |
9090 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
9091 | The \"Type\" column indicates one of:\n\ |
9092 | \tbreakpoint - normal breakpoint\n\ | |
9093 | \twatchpoint - watchpoint\n\ | |
9094 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
9095 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
9096 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
9097 | address and file/line number respectively.\n\ |
9098 | \n\ | |
9099 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
9100 | are set to the address of the last breakpoint listed unless the command\n\ |
9101 | is prefixed with \"server \".\n\n\ | |
c906108c | 9102 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 9103 | breakpoint set.")); |
c906108c SS |
9104 | |
9105 | if (xdb_commands) | |
1bedd215 AC |
9106 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
9107 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
9108 | The \"Type\" column indicates one of:\n\ |
9109 | \tbreakpoint - normal breakpoint\n\ | |
9110 | \twatchpoint - watchpoint\n\ | |
9111 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
9112 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
9113 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
9114 | address and file/line number respectively.\n\ |
9115 | \n\ | |
9116 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
9117 | are set to the address of the last breakpoint listed unless the command\n\ |
9118 | is prefixed with \"server \".\n\n\ | |
c906108c | 9119 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 9120 | breakpoint set.")); |
c906108c | 9121 | |
1a966eab AC |
9122 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
9123 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
9124 | The \"Type\" column indicates one of:\n\ |
9125 | \tbreakpoint - normal breakpoint\n\ | |
9126 | \twatchpoint - watchpoint\n\ | |
9127 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
9128 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
9129 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
9130 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
9131 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
9132 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
9133 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
9134 | address and file/line number respectively.\n\ |
9135 | \n\ | |
9136 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
9137 | are set to the address of the last breakpoint listed unless the command\n\ |
9138 | is prefixed with \"server \".\n\n\ | |
c906108c | 9139 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 9140 | breakpoint set."), |
c906108c SS |
9141 | &maintenanceinfolist); |
9142 | ||
44feb3ce TT |
9143 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
9144 | Set catchpoints to catch events."), | |
9145 | &catch_cmdlist, "catch ", | |
9146 | 0/*allow-unknown*/, &cmdlist); | |
9147 | ||
9148 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
9149 | Set temporary catchpoints to catch events."), | |
9150 | &tcatch_cmdlist, "tcatch ", | |
9151 | 0/*allow-unknown*/, &cmdlist); | |
9152 | ||
9153 | /* Add catch and tcatch sub-commands. */ | |
9154 | add_catch_command ("catch", _("\ | |
9155 | Catch an exception, when caught.\n\ | |
9156 | With an argument, catch only exceptions with the given name."), | |
9157 | catch_catch_command, | |
9158 | CATCH_PERMANENT, | |
9159 | CATCH_TEMPORARY); | |
9160 | add_catch_command ("throw", _("\ | |
9161 | Catch an exception, when thrown.\n\ | |
9162 | With an argument, catch only exceptions with the given name."), | |
9163 | catch_throw_command, | |
9164 | CATCH_PERMANENT, | |
9165 | CATCH_TEMPORARY); | |
9166 | add_catch_command ("fork", _("Catch calls to fork."), | |
9167 | catch_fork_command_1, | |
9168 | (void *) (uintptr_t) catch_fork_permanent, | |
9169 | (void *) (uintptr_t) catch_fork_temporary); | |
9170 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
9171 | catch_fork_command_1, | |
9172 | (void *) (uintptr_t) catch_vfork_permanent, | |
9173 | (void *) (uintptr_t) catch_vfork_temporary); | |
9174 | add_catch_command ("exec", _("Catch calls to exec."), | |
9175 | catch_exec_command_1, | |
9176 | CATCH_PERMANENT, | |
9177 | CATCH_TEMPORARY); | |
44feb3ce TT |
9178 | add_catch_command ("exception", _("\ |
9179 | Catch Ada exceptions, when raised.\n\ | |
9180 | With an argument, catch only exceptions with the given name."), | |
9181 | catch_ada_exception_command, | |
9182 | CATCH_PERMANENT, | |
9183 | CATCH_TEMPORARY); | |
9184 | add_catch_command ("assert", _("\ | |
9185 | Catch failed Ada assertions, when raised.\n\ | |
9186 | With an argument, catch only exceptions with the given name."), | |
9187 | catch_assert_command, | |
9188 | CATCH_PERMANENT, | |
9189 | CATCH_TEMPORARY); | |
c5aa993b | 9190 | |
1bedd215 AC |
9191 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
9192 | Set a watchpoint for an expression.\n\ | |
c906108c | 9193 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 9194 | an expression changes.")); |
65d12d83 | 9195 | set_cmd_completer (c, expression_completer); |
c906108c | 9196 | |
1bedd215 AC |
9197 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
9198 | Set a read watchpoint for an expression.\n\ | |
c906108c | 9199 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 9200 | an expression is read.")); |
65d12d83 | 9201 | set_cmd_completer (c, expression_completer); |
c906108c | 9202 | |
1bedd215 AC |
9203 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
9204 | Set a watchpoint for an expression.\n\ | |
c906108c | 9205 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 9206 | an expression is either read or written.")); |
65d12d83 | 9207 | set_cmd_completer (c, expression_completer); |
c906108c SS |
9208 | |
9209 | add_info ("watchpoints", breakpoints_info, | |
1bedd215 | 9210 | _("Synonym for ``info breakpoints''.")); |
c906108c SS |
9211 | |
9212 | ||
920d2a44 AC |
9213 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
9214 | respond to changes - contrary to the description. */ | |
85c07804 AC |
9215 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
9216 | &can_use_hw_watchpoints, _("\ | |
9217 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
9218 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
9219 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
9220 | such is available. (However, any hardware watchpoints that were\n\ | |
9221 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
9222 | hardware.)"), |
9223 | NULL, | |
920d2a44 | 9224 | show_can_use_hw_watchpoints, |
85c07804 | 9225 | &setlist, &showlist); |
c906108c SS |
9226 | |
9227 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 9228 | |
1042e4c0 SS |
9229 | /* Tracepoint manipulation commands. */ |
9230 | ||
9231 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
9232 | Set a tracepoint at specified line or function.\n\ | |
9233 | \n" | |
9234 | BREAK_ARGS_HELP ("trace") "\n\ | |
9235 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
9236 | set_cmd_completer (c, location_completer); | |
9237 | ||
9238 | add_com_alias ("tp", "trace", class_alias, 0); | |
9239 | add_com_alias ("tr", "trace", class_alias, 1); | |
9240 | add_com_alias ("tra", "trace", class_alias, 1); | |
9241 | add_com_alias ("trac", "trace", class_alias, 1); | |
9242 | ||
9243 | add_info ("tracepoints", tracepoints_info, _("\ | |
9244 | Status of tracepoints, or tracepoint number NUMBER.\n\ | |
9245 | Convenience variable \"$tpnum\" contains the number of the\n\ | |
9246 | last tracepoint set.")); | |
9247 | ||
9248 | add_info_alias ("tp", "tracepoints", 1); | |
9249 | ||
9250 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
9251 | Delete specified tracepoints.\n\ | |
9252 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
9253 | No argument means delete all tracepoints."), | |
9254 | &deletelist); | |
9255 | ||
9256 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
9257 | Disable specified tracepoints.\n\ | |
9258 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
9259 | No argument means disable all tracepoints."), | |
9260 | &disablelist); | |
9261 | deprecate_cmd (c, "disable"); | |
9262 | ||
9263 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
9264 | Enable specified tracepoints.\n\ | |
9265 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
9266 | No argument means enable all tracepoints."), | |
9267 | &enablelist); | |
9268 | deprecate_cmd (c, "enable"); | |
9269 | ||
9270 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
9271 | Set the passcount for a tracepoint.\n\ | |
9272 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
9273 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
9274 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
9275 | ||
9276 | c = add_com ("save-tracepoints", class_trace, tracepoint_save_command, _("\ | |
9277 | Save current tracepoint definitions as a script.\n\ | |
9278 | Use the 'source' command in another debug session to restore them.")); | |
9279 | set_cmd_completer (c, filename_completer); | |
9280 | ||
1bedd215 | 9281 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
9282 | Breakpoint specific settings\n\ |
9283 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 9284 | pending breakpoint behavior"), |
fa8d40ab JJ |
9285 | &breakpoint_set_cmdlist, "set breakpoint ", |
9286 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 9287 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
9288 | Breakpoint specific settings\n\ |
9289 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 9290 | pending breakpoint behavior"), |
fa8d40ab JJ |
9291 | &breakpoint_show_cmdlist, "show breakpoint ", |
9292 | 0/*allow-unknown*/, &showlist); | |
9293 | ||
7915a72c AC |
9294 | add_setshow_auto_boolean_cmd ("pending", no_class, |
9295 | &pending_break_support, _("\ | |
9296 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
9297 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
9298 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
9299 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
9300 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 9301 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 9302 | NULL, |
920d2a44 | 9303 | show_pending_break_support, |
6e1d7d6c AC |
9304 | &breakpoint_set_cmdlist, |
9305 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
9306 | |
9307 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
9308 | |
9309 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
9310 | &automatic_hardware_breakpoints, _("\ | |
9311 | Set automatic usage of hardware breakpoints."), _("\ | |
9312 | Show automatic usage of hardware breakpoints."), _("\ | |
9313 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
9314 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
9315 | a warning will be emitted for such breakpoints."), | |
9316 | NULL, | |
9317 | show_automatic_hardware_breakpoints, | |
9318 | &breakpoint_set_cmdlist, | |
9319 | &breakpoint_show_cmdlist); | |
74960c60 | 9320 | |
33e5cbd6 PA |
9321 | add_setshow_enum_cmd ("always-inserted", class_support, |
9322 | always_inserted_enums, &always_inserted_mode, _("\ | |
74960c60 VP |
9323 | Set mode for inserting breakpoints."), _("\ |
9324 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
9325 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
9326 | resumed, and removed when execution stops. When this mode is on,\n\ | |
9327 | breakpoints are inserted immediately and removed only when the user\n\ | |
9328 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
9329 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
9330 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
9331 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
9332 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
74960c60 VP |
9333 | NULL, |
9334 | &show_always_inserted_mode, | |
9335 | &breakpoint_set_cmdlist, | |
9336 | &breakpoint_show_cmdlist); | |
765dc015 VP |
9337 | |
9338 | automatic_hardware_breakpoints = 1; | |
f3b1572e PA |
9339 | |
9340 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
c906108c | 9341 | } |