Commit | Line | Data |
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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
6aba47ca | 3 | Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, |
9b254dd1 | 4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, |
0fb0cc75 | 5 | 2008, 2009 Free Software Foundation, Inc. |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
23 | #include <ctype.h> | |
776592bf | 24 | #include "hashtab.h" |
c906108c SS |
25 | #include "symtab.h" |
26 | #include "frame.h" | |
27 | #include "breakpoint.h" | |
1042e4c0 | 28 | #include "tracepoint.h" |
c906108c SS |
29 | #include "gdbtypes.h" |
30 | #include "expression.h" | |
31 | #include "gdbcore.h" | |
32 | #include "gdbcmd.h" | |
33 | #include "value.h" | |
34 | #include "command.h" | |
35 | #include "inferior.h" | |
36 | #include "gdbthread.h" | |
37 | #include "target.h" | |
38 | #include "language.h" | |
39 | #include "gdb_string.h" | |
40 | #include "demangle.h" | |
41 | #include "annotate.h" | |
42 | #include "symfile.h" | |
43 | #include "objfiles.h" | |
0378c332 | 44 | #include "source.h" |
c5f0f3d0 | 45 | #include "linespec.h" |
c94fdfd0 | 46 | #include "completer.h" |
5b7f31a4 | 47 | #include "gdb.h" |
8b93c638 | 48 | #include "ui-out.h" |
e1507482 | 49 | #include "cli/cli-script.h" |
0225421b | 50 | #include "gdb_assert.h" |
fe898f56 | 51 | #include "block.h" |
a77053c2 | 52 | #include "solib.h" |
84acb35a JJ |
53 | #include "solist.h" |
54 | #include "observer.h" | |
60250e8b | 55 | #include "exceptions.h" |
765dc015 | 56 | #include "memattr.h" |
f7f9143b | 57 | #include "ada-lang.h" |
d1aa2f50 | 58 | #include "top.h" |
fa4727a6 | 59 | #include "wrapper.h" |
79a45b7d | 60 | #include "valprint.h" |
c906108c | 61 | |
1042e4c0 SS |
62 | /* readline include files */ |
63 | #include "readline/readline.h" | |
64 | #include "readline/history.h" | |
65 | ||
66 | /* readline defines this. */ | |
67 | #undef savestring | |
68 | ||
034dad6f | 69 | #include "mi/mi-common.h" |
104c1213 | 70 | |
44feb3ce TT |
71 | /* Arguments to pass as context to some catch command handlers. */ |
72 | #define CATCH_PERMANENT ((void *) (uintptr_t) 0) | |
73 | #define CATCH_TEMPORARY ((void *) (uintptr_t) 1) | |
c906108c | 74 | |
44feb3ce | 75 | /* Prototypes for local functions. */ |
c906108c | 76 | |
a14ed312 | 77 | static void enable_delete_command (char *, int); |
c906108c | 78 | |
a14ed312 | 79 | static void enable_delete_breakpoint (struct breakpoint *); |
c906108c | 80 | |
a14ed312 | 81 | static void enable_once_command (char *, int); |
c906108c | 82 | |
a14ed312 | 83 | static void enable_once_breakpoint (struct breakpoint *); |
c906108c | 84 | |
a14ed312 | 85 | static void disable_command (char *, int); |
c906108c | 86 | |
a14ed312 | 87 | static void enable_command (char *, int); |
c906108c | 88 | |
a14ed312 | 89 | static void map_breakpoint_numbers (char *, void (*)(struct breakpoint *)); |
c906108c | 90 | |
a14ed312 | 91 | static void ignore_command (char *, int); |
c906108c | 92 | |
4efb68b1 | 93 | static int breakpoint_re_set_one (void *); |
c906108c | 94 | |
a14ed312 | 95 | static void clear_command (char *, int); |
c906108c | 96 | |
a14ed312 | 97 | static void catch_command (char *, int); |
c906108c | 98 | |
a14ed312 | 99 | static void watch_command (char *, int); |
c906108c | 100 | |
a14ed312 | 101 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 102 | |
98deb0da | 103 | static void break_command_1 (char *, int, int); |
c906108c | 104 | |
a14ed312 | 105 | static void mention (struct breakpoint *); |
c906108c | 106 | |
4d28f7a8 | 107 | struct breakpoint *set_raw_breakpoint (struct symtab_and_line, enum bptype); |
c906108c | 108 | |
9f60f21b | 109 | static void check_duplicates (struct breakpoint *); |
c906108c | 110 | |
76897487 KB |
111 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
112 | ||
88f7da05 KB |
113 | static CORE_ADDR adjust_breakpoint_address (CORE_ADDR bpaddr, |
114 | enum bptype bptype); | |
76897487 | 115 | |
714835d5 | 116 | static void describe_other_breakpoints (CORE_ADDR, struct obj_section *, int); |
c906108c | 117 | |
a14ed312 | 118 | static void breakpoints_info (char *, int); |
c906108c | 119 | |
a14ed312 | 120 | static void breakpoint_1 (int, int); |
c906108c | 121 | |
89f9893c | 122 | static bpstat bpstat_alloc (const struct bp_location *, bpstat); |
c906108c | 123 | |
4efb68b1 | 124 | static int breakpoint_cond_eval (void *); |
c906108c | 125 | |
4efb68b1 | 126 | static void cleanup_executing_breakpoints (void *); |
c906108c | 127 | |
a14ed312 | 128 | static void commands_command (char *, int); |
c906108c | 129 | |
a14ed312 | 130 | static void condition_command (char *, int); |
c906108c | 131 | |
a14ed312 | 132 | static int get_number_trailer (char **, int); |
c906108c | 133 | |
a14ed312 | 134 | void set_breakpoint_count (int); |
c906108c | 135 | |
c5aa993b JM |
136 | typedef enum |
137 | { | |
138 | mark_inserted, | |
139 | mark_uninserted | |
140 | } | |
141 | insertion_state_t; | |
c906108c | 142 | |
0bde7532 | 143 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
c906108c | 144 | |
a14ed312 | 145 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
146 | |
147 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 148 | |
4efb68b1 | 149 | static int watchpoint_check (void *); |
c906108c | 150 | |
a14ed312 | 151 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 152 | |
a14ed312 | 153 | static int hw_breakpoint_used_count (void); |
c906108c | 154 | |
a14ed312 | 155 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 156 | |
a14ed312 | 157 | static void hbreak_command (char *, int); |
c906108c | 158 | |
a14ed312 | 159 | static void thbreak_command (char *, int); |
c906108c | 160 | |
a14ed312 | 161 | static void watch_command_1 (char *, int, int); |
c906108c | 162 | |
a14ed312 | 163 | static void rwatch_command (char *, int); |
c906108c | 164 | |
a14ed312 | 165 | static void awatch_command (char *, int); |
c906108c | 166 | |
a14ed312 | 167 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 168 | |
a14ed312 | 169 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 170 | |
a14ed312 | 171 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 172 | |
a14ed312 | 173 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 174 | |
a14ed312 | 175 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 176 | |
a14ed312 | 177 | static char *ep_parse_optional_filename (char **arg); |
7a292a7a | 178 | |
d85310f7 MS |
179 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
180 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 181 | |
a14ed312 | 182 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 183 | |
a14ed312 | 184 | static void ep_skip_leading_whitespace (char **s); |
7a292a7a | 185 | |
1aafd4da UW |
186 | static int single_step_breakpoint_inserted_here_p (CORE_ADDR pc); |
187 | ||
fe3f5fa8 VP |
188 | static void free_bp_location (struct bp_location *loc); |
189 | ||
39d61571 | 190 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 191 | |
b60e7edf | 192 | static void update_global_location_list (int); |
a5606eee | 193 | |
b60e7edf | 194 | static void update_global_location_list_nothrow (int); |
74960c60 VP |
195 | |
196 | static int is_hardware_watchpoint (struct breakpoint *bpt); | |
197 | ||
198 | static void insert_breakpoint_locations (void); | |
a5606eee | 199 | |
1042e4c0 SS |
200 | static void tracepoints_info (char *, int); |
201 | ||
202 | static void delete_trace_command (char *, int); | |
203 | ||
204 | static void enable_trace_command (char *, int); | |
205 | ||
206 | static void disable_trace_command (char *, int); | |
207 | ||
208 | static void trace_pass_command (char *, int); | |
209 | ||
3daf8fe5 JG |
210 | static void skip_prologue_sal (struct symtab_and_line *sal); |
211 | ||
212 | ||
f3b1572e PA |
213 | /* Flag indicating that a command has proceeded the inferior past the |
214 | current breakpoint. */ | |
215 | ||
216 | static int breakpoint_proceeded; | |
217 | ||
2cec12e5 AR |
218 | static const char * |
219 | bpdisp_text (enum bpdisp disp) | |
220 | { | |
221 | /* NOTE: the following values are a part of MI protocol and represent | |
222 | values of 'disp' field returned when inferior stops at a breakpoint. */ | |
223 | static char *bpdisps[] = {"del", "dstp", "dis", "keep"}; | |
224 | return bpdisps[(int) disp]; | |
225 | } | |
c906108c | 226 | |
2cec12e5 | 227 | /* Prototypes for exported functions. */ |
c906108c SS |
228 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
229 | if such is available. */ | |
230 | static int can_use_hw_watchpoints; | |
231 | ||
920d2a44 AC |
232 | static void |
233 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
234 | struct cmd_list_element *c, | |
235 | const char *value) | |
236 | { | |
237 | fprintf_filtered (file, _("\ | |
238 | Debugger's willingness to use watchpoint hardware is %s.\n"), | |
239 | value); | |
240 | } | |
241 | ||
fa8d40ab JJ |
242 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
243 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
244 | for unrecognized breakpoint locations. | |
245 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ | |
246 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
247 | static void |
248 | show_pending_break_support (struct ui_file *file, int from_tty, | |
249 | struct cmd_list_element *c, | |
250 | const char *value) | |
251 | { | |
252 | fprintf_filtered (file, _("\ | |
253 | Debugger's behavior regarding pending breakpoints is %s.\n"), | |
254 | value); | |
255 | } | |
fa8d40ab | 256 | |
765dc015 VP |
257 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
258 | set with "break" but falling in read-only memory. | |
259 | If 0, gdb will warn about such breakpoints, but won't automatically | |
260 | use hardware breakpoints. */ | |
261 | static int automatic_hardware_breakpoints; | |
262 | static void | |
263 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
264 | struct cmd_list_element *c, | |
265 | const char *value) | |
266 | { | |
267 | fprintf_filtered (file, _("\ | |
268 | Automatic usage of hardware breakpoints is %s.\n"), | |
269 | value); | |
270 | } | |
271 | ||
33e5cbd6 PA |
272 | /* If on, gdb will keep breakpoints inserted even as inferior is |
273 | stopped, and immediately insert any new breakpoints. If off, gdb | |
274 | will insert breakpoints into inferior only when resuming it, and | |
275 | will remove breakpoints upon stop. If auto, GDB will behave as ON | |
276 | if in non-stop mode, and as OFF if all-stop mode.*/ | |
277 | ||
278 | static const char always_inserted_auto[] = "auto"; | |
279 | static const char always_inserted_on[] = "on"; | |
280 | static const char always_inserted_off[] = "off"; | |
281 | static const char *always_inserted_enums[] = { | |
282 | always_inserted_auto, | |
283 | always_inserted_off, | |
284 | always_inserted_on, | |
285 | NULL | |
286 | }; | |
287 | static const char *always_inserted_mode = always_inserted_auto; | |
288 | static void | |
74960c60 | 289 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 290 | struct cmd_list_element *c, const char *value) |
74960c60 | 291 | { |
33e5cbd6 PA |
292 | if (always_inserted_mode == always_inserted_auto) |
293 | fprintf_filtered (file, _("\ | |
294 | Always inserted breakpoint mode is %s (currently %s).\n"), | |
295 | value, | |
296 | breakpoints_always_inserted_mode () ? "on" : "off"); | |
297 | else | |
298 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), value); | |
74960c60 VP |
299 | } |
300 | ||
33e5cbd6 PA |
301 | int |
302 | breakpoints_always_inserted_mode (void) | |
303 | { | |
304 | return (always_inserted_mode == always_inserted_on | |
305 | || (always_inserted_mode == always_inserted_auto && non_stop)); | |
306 | } | |
765dc015 | 307 | |
a14ed312 | 308 | void _initialize_breakpoint (void); |
c906108c | 309 | |
c906108c SS |
310 | /* Are we executing breakpoint commands? */ |
311 | static int executing_breakpoint_commands; | |
312 | ||
c02f5703 MS |
313 | /* Are overlay event breakpoints enabled? */ |
314 | static int overlay_events_enabled; | |
315 | ||
c906108c SS |
316 | /* Walk the following statement or block through all breakpoints. |
317 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
318 | breakpoint. */ | |
319 | ||
5c44784c | 320 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 321 | |
5c44784c JM |
322 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
323 | for (B = breakpoint_chain; \ | |
324 | B ? (TMP=B->next, 1): 0; \ | |
325 | B = TMP) | |
c906108c | 326 | |
7cc221ef DJ |
327 | /* Similar iterators for the low-level breakpoints. */ |
328 | ||
0d381245 | 329 | #define ALL_BP_LOCATIONS(B) for (B = bp_location_chain; B; B = B->global_next) |
7cc221ef DJ |
330 | |
331 | #define ALL_BP_LOCATIONS_SAFE(B,TMP) \ | |
332 | for (B = bp_location_chain; \ | |
0d381245 | 333 | B ? (TMP=B->global_next, 1): 0; \ |
7cc221ef DJ |
334 | B = TMP) |
335 | ||
1042e4c0 SS |
336 | /* Iterator for tracepoints only. */ |
337 | ||
338 | #define ALL_TRACEPOINTS(B) \ | |
339 | for (B = breakpoint_chain; B; B = B->next) \ | |
340 | if ((B)->type == bp_tracepoint) | |
341 | ||
7cc221ef | 342 | /* Chains of all breakpoints defined. */ |
c906108c SS |
343 | |
344 | struct breakpoint *breakpoint_chain; | |
345 | ||
7cc221ef DJ |
346 | struct bp_location *bp_location_chain; |
347 | ||
20874c92 VP |
348 | /* The locations that no longer correspond to any breakpoint, |
349 | unlinked from bp_location_chain, but for which a hit | |
350 | may still be reported by a target. */ | |
351 | VEC(bp_location_p) *moribund_locations = NULL; | |
352 | ||
c906108c SS |
353 | /* Number of last breakpoint made. */ |
354 | ||
355 | int breakpoint_count; | |
356 | ||
1042e4c0 SS |
357 | /* Number of last tracepoint made. */ |
358 | ||
359 | int tracepoint_count; | |
360 | ||
468d015d JJ |
361 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
362 | static int | |
363 | breakpoint_enabled (struct breakpoint *b) | |
364 | { | |
0d381245 | 365 | return (b->enable_state == bp_enabled); |
468d015d JJ |
366 | } |
367 | ||
c906108c SS |
368 | /* Set breakpoint count to NUM. */ |
369 | ||
370 | void | |
fba45db2 | 371 | set_breakpoint_count (int num) |
c906108c SS |
372 | { |
373 | breakpoint_count = num; | |
4fa62494 | 374 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
375 | } |
376 | ||
377 | /* Used in run_command to zero the hit count when a new run starts. */ | |
378 | ||
379 | void | |
fba45db2 | 380 | clear_breakpoint_hit_counts (void) |
c906108c SS |
381 | { |
382 | struct breakpoint *b; | |
383 | ||
384 | ALL_BREAKPOINTS (b) | |
385 | b->hit_count = 0; | |
386 | } | |
387 | ||
388 | /* Default address, symtab and line to put a breakpoint at | |
389 | for "break" command with no arg. | |
390 | if default_breakpoint_valid is zero, the other three are | |
391 | not valid, and "break" with no arg is an error. | |
392 | ||
393 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
394 | ||
395 | int default_breakpoint_valid; | |
396 | CORE_ADDR default_breakpoint_address; | |
397 | struct symtab *default_breakpoint_symtab; | |
398 | int default_breakpoint_line; | |
399 | \f | |
400 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
401 | Advance *PP after the string and any trailing whitespace. | |
402 | ||
403 | Currently the string can either be a number or "$" followed by the name | |
404 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c | 405 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
40c03ae8 EZ |
406 | |
407 | If the string is a NULL pointer, that denotes the last breakpoint. | |
5c44784c JM |
408 | |
409 | TRAILER is a character which can be found after the number; most | |
410 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 411 | static int |
fba45db2 | 412 | get_number_trailer (char **pp, int trailer) |
c906108c | 413 | { |
5c44784c | 414 | int retval = 0; /* default */ |
c906108c SS |
415 | char *p = *pp; |
416 | ||
417 | if (p == NULL) | |
418 | /* Empty line means refer to the last breakpoint. */ | |
419 | return breakpoint_count; | |
420 | else if (*p == '$') | |
421 | { | |
422 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 423 | to pass to lookup_internalvar(). */ |
c906108c SS |
424 | char *varname; |
425 | char *start = ++p; | |
4fa62494 | 426 | LONGEST val; |
c906108c SS |
427 | |
428 | while (isalnum (*p) || *p == '_') | |
429 | p++; | |
430 | varname = (char *) alloca (p - start + 1); | |
431 | strncpy (varname, start, p - start); | |
432 | varname[p - start] = '\0'; | |
4fa62494 UW |
433 | if (get_internalvar_integer (lookup_internalvar (varname), &val)) |
434 | retval = (int) val; | |
5c44784c JM |
435 | else |
436 | { | |
a3f17187 | 437 | printf_filtered (_("Convenience variable must have integer value.\n")); |
5c44784c JM |
438 | retval = 0; |
439 | } | |
c906108c SS |
440 | } |
441 | else | |
442 | { | |
443 | if (*p == '-') | |
444 | ++p; | |
445 | while (*p >= '0' && *p <= '9') | |
446 | ++p; | |
447 | if (p == *pp) | |
448 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
449 | { |
450 | /* Skip non-numeric token */ | |
451 | while (*p && !isspace((int) *p)) | |
452 | ++p; | |
453 | /* Return zero, which caller must interpret as error. */ | |
454 | retval = 0; | |
455 | } | |
456 | else | |
457 | retval = atoi (*pp); | |
458 | } | |
459 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
460 | { | |
461 | /* Trailing junk: return 0 and let caller print error msg. */ | |
462 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
463 | ++p; | |
464 | retval = 0; | |
c906108c | 465 | } |
c906108c SS |
466 | while (isspace (*p)) |
467 | p++; | |
468 | *pp = p; | |
469 | return retval; | |
470 | } | |
5c44784c | 471 | |
11cf8741 | 472 | |
5c44784c JM |
473 | /* Like get_number_trailer, but don't allow a trailer. */ |
474 | int | |
fba45db2 | 475 | get_number (char **pp) |
5c44784c JM |
476 | { |
477 | return get_number_trailer (pp, '\0'); | |
478 | } | |
479 | ||
480 | /* Parse a number or a range. | |
481 | * A number will be of the form handled by get_number. | |
482 | * A range will be of the form <number1> - <number2>, and | |
483 | * will represent all the integers between number1 and number2, | |
484 | * inclusive. | |
485 | * | |
486 | * While processing a range, this fuction is called iteratively; | |
487 | * At each call it will return the next value in the range. | |
488 | * | |
489 | * At the beginning of parsing a range, the char pointer PP will | |
490 | * be advanced past <number1> and left pointing at the '-' token. | |
491 | * Subsequent calls will not advance the pointer until the range | |
492 | * is completed. The call that completes the range will advance | |
493 | * pointer PP past <number2>. | |
494 | */ | |
495 | ||
496 | int | |
fba45db2 | 497 | get_number_or_range (char **pp) |
5c44784c JM |
498 | { |
499 | static int last_retval, end_value; | |
500 | static char *end_ptr; | |
501 | static int in_range = 0; | |
502 | ||
503 | if (**pp != '-') | |
504 | { | |
505 | /* Default case: pp is pointing either to a solo number, | |
506 | or to the first number of a range. */ | |
507 | last_retval = get_number_trailer (pp, '-'); | |
508 | if (**pp == '-') | |
509 | { | |
510 | char **temp; | |
511 | ||
512 | /* This is the start of a range (<number1> - <number2>). | |
513 | Skip the '-', parse and remember the second number, | |
514 | and also remember the end of the final token. */ | |
515 | ||
516 | temp = &end_ptr; | |
517 | end_ptr = *pp + 1; | |
518 | while (isspace ((int) *end_ptr)) | |
519 | end_ptr++; /* skip white space */ | |
520 | end_value = get_number (temp); | |
521 | if (end_value < last_retval) | |
522 | { | |
8a3fe4f8 | 523 | error (_("inverted range")); |
5c44784c JM |
524 | } |
525 | else if (end_value == last_retval) | |
526 | { | |
527 | /* degenerate range (number1 == number2). Advance the | |
528 | token pointer so that the range will be treated as a | |
529 | single number. */ | |
530 | *pp = end_ptr; | |
531 | } | |
532 | else | |
533 | in_range = 1; | |
534 | } | |
535 | } | |
536 | else if (! in_range) | |
8a3fe4f8 | 537 | error (_("negative value")); |
5c44784c JM |
538 | else |
539 | { | |
540 | /* pp points to the '-' that betokens a range. All | |
541 | number-parsing has already been done. Return the next | |
542 | integer value (one greater than the saved previous value). | |
543 | Do not advance the token pointer 'pp' until the end of range | |
544 | is reached. */ | |
545 | ||
546 | if (++last_retval == end_value) | |
547 | { | |
548 | /* End of range reached; advance token pointer. */ | |
549 | *pp = end_ptr; | |
550 | in_range = 0; | |
551 | } | |
552 | } | |
553 | return last_retval; | |
554 | } | |
555 | ||
556 | ||
c906108c SS |
557 | \f |
558 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
559 | ||
560 | static void | |
fba45db2 | 561 | condition_command (char *arg, int from_tty) |
c906108c | 562 | { |
52f0bd74 | 563 | struct breakpoint *b; |
c906108c | 564 | char *p; |
52f0bd74 | 565 | int bnum; |
c906108c SS |
566 | |
567 | if (arg == 0) | |
e2e0b3e5 | 568 | error_no_arg (_("breakpoint number")); |
c906108c SS |
569 | |
570 | p = arg; | |
571 | bnum = get_number (&p); | |
5c44784c | 572 | if (bnum == 0) |
8a3fe4f8 | 573 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
574 | |
575 | ALL_BREAKPOINTS (b) | |
576 | if (b->number == bnum) | |
2f069f6f JB |
577 | { |
578 | struct bp_location *loc = b->loc; | |
579 | for (; loc; loc = loc->next) | |
580 | { | |
581 | if (loc->cond) | |
582 | { | |
583 | xfree (loc->cond); | |
584 | loc->cond = 0; | |
585 | } | |
586 | } | |
587 | if (b->cond_string != NULL) | |
588 | xfree (b->cond_string); | |
c906108c | 589 | |
2f069f6f JB |
590 | if (*p == 0) |
591 | { | |
592 | b->cond_string = NULL; | |
593 | if (from_tty) | |
594 | printf_filtered (_("Breakpoint %d now unconditional.\n"), bnum); | |
595 | } | |
596 | else | |
597 | { | |
598 | arg = p; | |
599 | /* I don't know if it matters whether this is the string the user | |
600 | typed in or the decompiled expression. */ | |
1b36a34b | 601 | b->cond_string = xstrdup (arg); |
2f069f6f JB |
602 | b->condition_not_parsed = 0; |
603 | for (loc = b->loc; loc; loc = loc->next) | |
604 | { | |
605 | arg = p; | |
606 | loc->cond = | |
607 | parse_exp_1 (&arg, block_for_pc (loc->address), 0); | |
608 | if (*arg) | |
609 | error (_("Junk at end of expression")); | |
610 | } | |
611 | } | |
612 | breakpoints_changed (); | |
383f836e | 613 | observer_notify_breakpoint_modified (b->number); |
2f069f6f JB |
614 | return; |
615 | } | |
c906108c | 616 | |
8a3fe4f8 | 617 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
618 | } |
619 | ||
c906108c | 620 | static void |
fba45db2 | 621 | commands_command (char *arg, int from_tty) |
c906108c | 622 | { |
52f0bd74 | 623 | struct breakpoint *b; |
c906108c | 624 | char *p; |
52f0bd74 | 625 | int bnum; |
c906108c SS |
626 | struct command_line *l; |
627 | ||
628 | /* If we allowed this, we would have problems with when to | |
629 | free the storage, if we change the commands currently | |
630 | being read from. */ | |
631 | ||
632 | if (executing_breakpoint_commands) | |
8a3fe4f8 | 633 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); |
c906108c SS |
634 | |
635 | p = arg; | |
636 | bnum = get_number (&p); | |
5c44784c | 637 | |
c906108c | 638 | if (p && *p) |
8a3fe4f8 | 639 | error (_("Unexpected extra arguments following breakpoint number.")); |
c5aa993b | 640 | |
c906108c SS |
641 | ALL_BREAKPOINTS (b) |
642 | if (b->number == bnum) | |
9ebf4acf AC |
643 | { |
644 | char *tmpbuf = xstrprintf ("Type commands for when breakpoint %d is hit, one per line.", | |
645 | bnum); | |
646 | struct cleanup *cleanups = make_cleanup (xfree, tmpbuf); | |
311a4e6b | 647 | l = read_command_lines (tmpbuf, from_tty, 1); |
9ebf4acf AC |
648 | do_cleanups (cleanups); |
649 | free_command_lines (&b->commands); | |
650 | b->commands = l; | |
651 | breakpoints_changed (); | |
383f836e | 652 | observer_notify_breakpoint_modified (b->number); |
9ebf4acf | 653 | return; |
c5aa993b | 654 | } |
8a3fe4f8 | 655 | error (_("No breakpoint number %d."), bnum); |
c906108c | 656 | } |
40c03ae8 EZ |
657 | |
658 | /* Like commands_command, but instead of reading the commands from | |
659 | input stream, takes them from an already parsed command structure. | |
660 | ||
661 | This is used by cli-script.c to DTRT with breakpoint commands | |
662 | that are part of if and while bodies. */ | |
663 | enum command_control_type | |
664 | commands_from_control_command (char *arg, struct command_line *cmd) | |
665 | { | |
666 | struct breakpoint *b; | |
667 | char *p; | |
668 | int bnum; | |
669 | ||
670 | /* If we allowed this, we would have problems with when to | |
671 | free the storage, if we change the commands currently | |
672 | being read from. */ | |
673 | ||
674 | if (executing_breakpoint_commands) | |
675 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); | |
676 | ||
677 | /* An empty string for the breakpoint number means the last | |
678 | breakpoint, but get_number expects a NULL pointer. */ | |
679 | if (arg && !*arg) | |
680 | p = NULL; | |
681 | else | |
682 | p = arg; | |
683 | bnum = get_number (&p); | |
684 | ||
685 | if (p && *p) | |
686 | error (_("Unexpected extra arguments following breakpoint number.")); | |
687 | ||
688 | ALL_BREAKPOINTS (b) | |
689 | if (b->number == bnum) | |
690 | { | |
691 | free_command_lines (&b->commands); | |
692 | if (cmd->body_count != 1) | |
693 | error (_("Invalid \"commands\" block structure.")); | |
694 | /* We need to copy the commands because if/while will free the | |
695 | list after it finishes execution. */ | |
696 | b->commands = copy_command_lines (cmd->body_list[0]); | |
697 | breakpoints_changed (); | |
383f836e | 698 | observer_notify_breakpoint_modified (b->number); |
40c03ae8 | 699 | return simple_control; |
2f069f6f | 700 | } |
40c03ae8 EZ |
701 | error (_("No breakpoint number %d."), bnum); |
702 | } | |
c906108c | 703 | \f |
8defab1a DJ |
704 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
705 | by replacing any memory breakpoints with their shadowed contents. */ | |
c906108c | 706 | |
8defab1a DJ |
707 | void |
708 | breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr, LONGEST len) | |
c906108c | 709 | { |
8defab1a | 710 | struct bp_location *b; |
c906108c SS |
711 | CORE_ADDR bp_addr = 0; |
712 | int bp_size = 0; | |
8defab1a | 713 | int bptoffset = 0; |
c5aa993b | 714 | |
ffce0d52 | 715 | ALL_BP_LOCATIONS (b) |
c5aa993b | 716 | { |
ffce0d52 | 717 | if (b->owner->type == bp_none) |
8a3fe4f8 | 718 | warning (_("reading through apparently deleted breakpoint #%d?"), |
ffce0d52 DJ |
719 | b->owner->number); |
720 | ||
721 | if (b->loc_type != bp_loc_software_breakpoint) | |
c5aa993b | 722 | continue; |
ffce0d52 | 723 | if (!b->inserted) |
c5aa993b JM |
724 | continue; |
725 | /* Addresses and length of the part of the breakpoint that | |
726 | we need to copy. */ | |
8181d85f DJ |
727 | bp_addr = b->target_info.placed_address; |
728 | bp_size = b->target_info.shadow_len; | |
c5aa993b | 729 | if (bp_size == 0) |
8181d85f | 730 | /* bp isn't valid, or doesn't shadow memory. */ |
c5aa993b | 731 | continue; |
8defab1a | 732 | |
c5aa993b JM |
733 | if (bp_addr + bp_size <= memaddr) |
734 | /* The breakpoint is entirely before the chunk of memory we | |
735 | are reading. */ | |
736 | continue; | |
8defab1a | 737 | |
c5aa993b JM |
738 | if (bp_addr >= memaddr + len) |
739 | /* The breakpoint is entirely after the chunk of memory we are | |
740 | reading. */ | |
741 | continue; | |
c5aa993b | 742 | |
8defab1a DJ |
743 | /* Offset within shadow_contents. */ |
744 | if (bp_addr < memaddr) | |
745 | { | |
746 | /* Only copy the second part of the breakpoint. */ | |
747 | bp_size -= memaddr - bp_addr; | |
748 | bptoffset = memaddr - bp_addr; | |
749 | bp_addr = memaddr; | |
750 | } | |
c5aa993b | 751 | |
8defab1a DJ |
752 | if (bp_addr + bp_size > memaddr + len) |
753 | { | |
754 | /* Only copy the first part of the breakpoint. */ | |
755 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
756 | } | |
c5aa993b | 757 | |
8defab1a DJ |
758 | memcpy (buf + bp_addr - memaddr, |
759 | b->target_info.shadow_contents + bptoffset, bp_size); | |
c5aa993b | 760 | } |
c906108c | 761 | } |
c906108c | 762 | \f |
c5aa993b | 763 | |
687595f9 | 764 | /* A wrapper function for inserting catchpoints. */ |
9cbc821d | 765 | static void |
687595f9 DJ |
766 | insert_catchpoint (struct ui_out *uo, void *args) |
767 | { | |
768 | struct breakpoint *b = (struct breakpoint *) args; | |
769 | int val = -1; | |
770 | ||
fe798b75 JB |
771 | gdb_assert (b->type == bp_catchpoint); |
772 | gdb_assert (b->ops != NULL && b->ops->insert != NULL); | |
773 | ||
774 | b->ops->insert (b); | |
687595f9 DJ |
775 | } |
776 | ||
a5606eee VP |
777 | static int |
778 | is_hardware_watchpoint (struct breakpoint *bpt) | |
779 | { | |
780 | return (bpt->type == bp_hardware_watchpoint | |
781 | || bpt->type == bp_read_watchpoint | |
782 | || bpt->type == bp_access_watchpoint); | |
783 | } | |
7270d8f2 | 784 | |
fa4727a6 DJ |
785 | /* Find the current value of a watchpoint on EXP. Return the value in |
786 | *VALP and *RESULTP and the chain of intermediate and final values | |
787 | in *VAL_CHAIN. RESULTP and VAL_CHAIN may be NULL if the caller does | |
788 | not need them. | |
789 | ||
ccc57cf9 | 790 | If a memory error occurs while evaluating the expression, *RESULTP will |
fa4727a6 DJ |
791 | be set to NULL. *RESULTP may be a lazy value, if the result could |
792 | not be read from memory. It is used to determine whether a value | |
793 | is user-specified (we should watch the whole value) or intermediate | |
794 | (we should watch only the bit used to locate the final value). | |
795 | ||
796 | If the final value, or any intermediate value, could not be read | |
797 | from memory, *VALP will be set to NULL. *VAL_CHAIN will still be | |
798 | set to any referenced values. *VALP will never be a lazy value. | |
799 | This is the value which we store in struct breakpoint. | |
800 | ||
801 | If VAL_CHAIN is non-NULL, *VAL_CHAIN will be released from the | |
802 | value chain. The caller must free the values individually. If | |
803 | VAL_CHAIN is NULL, all generated values will be left on the value | |
804 | chain. */ | |
805 | ||
806 | static void | |
807 | fetch_watchpoint_value (struct expression *exp, struct value **valp, | |
808 | struct value **resultp, struct value **val_chain) | |
809 | { | |
810 | struct value *mark, *new_mark, *result; | |
ccc57cf9 | 811 | volatile struct gdb_exception ex; |
fa4727a6 DJ |
812 | |
813 | *valp = NULL; | |
814 | if (resultp) | |
815 | *resultp = NULL; | |
816 | if (val_chain) | |
817 | *val_chain = NULL; | |
818 | ||
819 | /* Evaluate the expression. */ | |
820 | mark = value_mark (); | |
821 | result = NULL; | |
ccc57cf9 PA |
822 | |
823 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
824 | { | |
825 | result = evaluate_expression (exp); | |
826 | } | |
827 | if (ex.reason < 0) | |
828 | { | |
829 | /* Ignore memory errors, we want watchpoints pointing at | |
830 | inaccessible memory to still be created; otherwise, throw the | |
831 | error to some higher catcher. */ | |
832 | switch (ex.error) | |
833 | { | |
834 | case MEMORY_ERROR: | |
835 | break; | |
836 | default: | |
837 | throw_exception (ex); | |
838 | break; | |
839 | } | |
840 | } | |
841 | ||
fa4727a6 DJ |
842 | new_mark = value_mark (); |
843 | if (mark == new_mark) | |
844 | return; | |
845 | if (resultp) | |
846 | *resultp = result; | |
847 | ||
848 | /* Make sure it's not lazy, so that after the target stops again we | |
849 | have a non-lazy previous value to compare with. */ | |
850 | if (result != NULL | |
851 | && (!value_lazy (result) || gdb_value_fetch_lazy (result))) | |
852 | *valp = result; | |
853 | ||
854 | if (val_chain) | |
855 | { | |
856 | /* Return the chain of intermediate values. We use this to | |
857 | decide which addresses to watch. */ | |
858 | *val_chain = new_mark; | |
859 | value_release_to_mark (mark); | |
860 | } | |
861 | } | |
862 | ||
567e1b4e JB |
863 | /* Assuming that B is a watchpoint: |
864 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 865 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
866 | - Evaluate the condition if there is one, and store the result |
867 | in b->loc->cond. | |
a5606eee VP |
868 | - Update the list of values that must be watched in B->loc. |
869 | ||
bfa149ac JB |
870 | If the watchpoint disposition is disp_del_at_next_stop, then do nothing. |
871 | If this is local watchpoint that is out of scope, delete it. */ | |
b40ce68a | 872 | static void |
a5606eee | 873 | update_watchpoint (struct breakpoint *b, int reparse) |
7270d8f2 | 874 | { |
a5606eee | 875 | int within_current_scope; |
a5606eee VP |
876 | struct frame_id saved_frame_id; |
877 | struct bp_location *loc; | |
878 | bpstat bs; | |
879 | ||
567e1b4e JB |
880 | /* We don't free locations. They are stored in bp_location_chain and |
881 | update_global_locations will eventually delete them and remove | |
882 | breakpoints if needed. */ | |
a5606eee VP |
883 | b->loc = NULL; |
884 | ||
885 | if (b->disposition == disp_del_at_next_stop) | |
886 | return; | |
887 | ||
888 | /* Save the current frame's ID so we can restore it after | |
889 | evaluating the watchpoint expression on its own frame. */ | |
890 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
891 | took a frame parameter, so that we didn't have to change the | |
892 | selected frame. */ | |
893 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
894 | ||
895 | /* Determine if the watchpoint is within scope. */ | |
896 | if (b->exp_valid_block == NULL) | |
897 | within_current_scope = 1; | |
898 | else | |
899 | { | |
900 | struct frame_info *fi; | |
901 | fi = frame_find_by_id (b->watchpoint_frame); | |
902 | within_current_scope = (fi != NULL); | |
903 | if (within_current_scope) | |
904 | select_frame (fi); | |
905 | } | |
906 | ||
907 | if (within_current_scope && reparse) | |
908 | { | |
909 | char *s; | |
910 | if (b->exp) | |
911 | { | |
912 | xfree (b->exp); | |
913 | b->exp = NULL; | |
914 | } | |
915 | s = b->exp_string; | |
916 | b->exp = parse_exp_1 (&s, b->exp_valid_block, 0); | |
917 | /* If the meaning of expression itself changed, the old value is | |
918 | no longer relevant. We don't want to report a watchpoint hit | |
919 | to the user when the old value and the new value may actually | |
920 | be completely different objects. */ | |
921 | value_free (b->val); | |
fa4727a6 DJ |
922 | b->val = NULL; |
923 | b->val_valid = 0; | |
a5606eee | 924 | } |
a5606eee VP |
925 | |
926 | /* If we failed to parse the expression, for example because | |
927 | it refers to a global variable in a not-yet-loaded shared library, | |
928 | don't try to insert watchpoint. We don't automatically delete | |
929 | such watchpoint, though, since failure to parse expression | |
930 | is different from out-of-scope watchpoint. */ | |
931 | if (within_current_scope && b->exp) | |
932 | { | |
fa4727a6 | 933 | struct value *val_chain, *v, *result, *next; |
a5606eee | 934 | |
fa4727a6 | 935 | fetch_watchpoint_value (b->exp, &v, &result, &val_chain); |
a5606eee | 936 | |
a5606eee VP |
937 | /* Avoid setting b->val if it's already set. The meaning of |
938 | b->val is 'the last value' user saw, and we should update | |
939 | it only if we reported that last value to user. As it | |
940 | happens, the code that reports it updates b->val directly. */ | |
fa4727a6 DJ |
941 | if (!b->val_valid) |
942 | { | |
943 | b->val = v; | |
944 | b->val_valid = 1; | |
945 | } | |
a5606eee | 946 | |
db2ad4c3 JK |
947 | /* Change the type of breakpoint between hardware assisted or an |
948 | ordinary watchpoint depending on the hardware support and free | |
949 | hardware slots. REPARSE is set when the inferior is started. */ | |
950 | if ((b->type == bp_watchpoint || b->type == bp_hardware_watchpoint) | |
951 | && reparse) | |
952 | { | |
ca2d49e8 | 953 | int i, mem_cnt, other_type_used; |
db2ad4c3 JK |
954 | |
955 | i = hw_watchpoint_used_count (bp_hardware_watchpoint, | |
956 | &other_type_used); | |
957 | mem_cnt = can_use_hardware_watchpoint (val_chain); | |
958 | ||
ca2d49e8 | 959 | if (!mem_cnt) |
db2ad4c3 JK |
960 | b->type = bp_watchpoint; |
961 | else | |
ca2d49e8 | 962 | { |
d92524f1 | 963 | int target_resources_ok = target_can_use_hardware_watchpoint |
ca2d49e8 SL |
964 | (bp_hardware_watchpoint, i + mem_cnt, other_type_used); |
965 | if (target_resources_ok <= 0) | |
966 | b->type = bp_watchpoint; | |
967 | else | |
968 | b->type = bp_hardware_watchpoint; | |
969 | } | |
db2ad4c3 JK |
970 | } |
971 | ||
a5606eee | 972 | /* Look at each value on the value chain. */ |
fa4727a6 | 973 | for (v = val_chain; v; v = next) |
a5606eee VP |
974 | { |
975 | /* If it's a memory location, and GDB actually needed | |
976 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
977 | must watch it. If the first value returned is |
978 | still lazy, that means an error occurred reading it; | |
979 | watch it anyway in case it becomes readable. */ | |
a5606eee | 980 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 981 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
982 | { |
983 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 984 | |
a5606eee VP |
985 | /* We only watch structs and arrays if user asked |
986 | for it explicitly, never if they just happen to | |
987 | appear in the middle of some value chain. */ | |
fa4727a6 | 988 | if (v == result |
a5606eee VP |
989 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
990 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
991 | { | |
992 | CORE_ADDR addr; | |
993 | int len, type; | |
994 | struct bp_location *loc, **tmp; | |
995 | ||
42ae5230 | 996 | addr = value_address (v); |
a5606eee VP |
997 | len = TYPE_LENGTH (value_type (v)); |
998 | type = hw_write; | |
999 | if (b->type == bp_read_watchpoint) | |
1000 | type = hw_read; | |
1001 | else if (b->type == bp_access_watchpoint) | |
1002 | type = hw_access; | |
1003 | ||
39d61571 | 1004 | loc = allocate_bp_location (b); |
a5606eee VP |
1005 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
1006 | ; | |
1007 | *tmp = loc; | |
1008 | loc->address = addr; | |
1009 | loc->length = len; | |
1010 | loc->watchpoint_type = type; | |
1011 | } | |
1012 | } | |
1013 | ||
1014 | next = value_next (v); | |
1015 | if (v != b->val) | |
1016 | value_free (v); | |
1017 | } | |
1018 | ||
2ec93238 MK |
1019 | /* We just regenerated the list of breakpoint locations. |
1020 | The new location does not have its condition field set to anything | |
1021 | and therefore, we must always reparse the cond_string, independently | |
1022 | of the value of the reparse flag. */ | |
1023 | if (b->cond_string != NULL) | |
a5606eee VP |
1024 | { |
1025 | char *s = b->cond_string; | |
a5606eee VP |
1026 | b->loc->cond = parse_exp_1 (&s, b->exp_valid_block, 0); |
1027 | } | |
1028 | } | |
1029 | else if (!within_current_scope) | |
7270d8f2 | 1030 | { |
a5606eee | 1031 | printf_filtered (_("\ |
567e1b4e | 1032 | Watchpoint %d deleted because the program has left the block \n\ |
a5606eee VP |
1033 | in which its expression is valid.\n"), |
1034 | b->number); | |
1035 | if (b->related_breakpoint) | |
1036 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1037 | b->disposition = disp_del_at_next_stop; | |
7270d8f2 | 1038 | } |
a5606eee VP |
1039 | |
1040 | /* Restore the selected frame. */ | |
1041 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1042 | } |
1043 | ||
a5606eee | 1044 | |
74960c60 VP |
1045 | /* Returns 1 iff breakpoint location should be |
1046 | inserted in the inferior. */ | |
1047 | static int | |
1048 | should_be_inserted (struct bp_location *bpt) | |
1049 | { | |
1050 | if (!breakpoint_enabled (bpt->owner)) | |
1051 | return 0; | |
1052 | ||
1053 | if (bpt->owner->disposition == disp_del_at_next_stop) | |
1054 | return 0; | |
1055 | ||
1056 | if (!bpt->enabled || bpt->shlib_disabled || bpt->duplicate) | |
1057 | return 0; | |
1058 | ||
1042e4c0 SS |
1059 | /* Tracepoints are inserted by the target at a time of its choosing, |
1060 | not by us. */ | |
1061 | if (bpt->owner->type == bp_tracepoint) | |
1062 | return 0; | |
1063 | ||
74960c60 VP |
1064 | return 1; |
1065 | } | |
1066 | ||
879bfdc2 DJ |
1067 | /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint. |
1068 | Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS, | |
fa3a767f | 1069 | and HW_BREAKPOINT_ERROR are used to report problems. |
879bfdc2 DJ |
1070 | |
1071 | NOTE drow/2003-09-09: This routine could be broken down to an object-style | |
1072 | method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 1073 | static int |
879bfdc2 | 1074 | insert_bp_location (struct bp_location *bpt, |
26bb91f3 | 1075 | struct ui_file *tmp_error_stream, |
fa3a767f | 1076 | int *disabled_breaks, |
26bb91f3 | 1077 | int *hw_breakpoint_error) |
879bfdc2 DJ |
1078 | { |
1079 | int val = 0; | |
1080 | ||
74960c60 | 1081 | if (!should_be_inserted (bpt) || bpt->inserted) |
879bfdc2 DJ |
1082 | return 0; |
1083 | ||
8181d85f DJ |
1084 | /* Initialize the target-specific information. */ |
1085 | memset (&bpt->target_info, 0, sizeof (bpt->target_info)); | |
1086 | bpt->target_info.placed_address = bpt->address; | |
1087 | ||
879bfdc2 DJ |
1088 | if (bpt->loc_type == bp_loc_software_breakpoint |
1089 | || bpt->loc_type == bp_loc_hardware_breakpoint) | |
1090 | { | |
765dc015 VP |
1091 | if (bpt->owner->type != bp_hardware_breakpoint) |
1092 | { | |
1093 | /* If the explicitly specified breakpoint type | |
1094 | is not hardware breakpoint, check the memory map to see | |
1095 | if the breakpoint address is in read only memory or not. | |
1096 | Two important cases are: | |
1097 | - location type is not hardware breakpoint, memory | |
1098 | is readonly. We change the type of the location to | |
1099 | hardware breakpoint. | |
1100 | - location type is hardware breakpoint, memory is read-write. | |
1101 | This means we've previously made the location hardware one, but | |
1102 | then the memory map changed, so we undo. | |
1103 | ||
1104 | When breakpoints are removed, remove_breakpoints will | |
1105 | use location types we've just set here, the only possible | |
1106 | problem is that memory map has changed during running program, | |
1107 | but it's not going to work anyway with current gdb. */ | |
1108 | struct mem_region *mr | |
1109 | = lookup_mem_region (bpt->target_info.placed_address); | |
1110 | ||
1111 | if (mr) | |
1112 | { | |
1113 | if (automatic_hardware_breakpoints) | |
1114 | { | |
1115 | int changed = 0; | |
1116 | enum bp_loc_type new_type; | |
1117 | ||
1118 | if (mr->attrib.mode != MEM_RW) | |
1119 | new_type = bp_loc_hardware_breakpoint; | |
1120 | else | |
1121 | new_type = bp_loc_software_breakpoint; | |
1122 | ||
1123 | if (new_type != bpt->loc_type) | |
1124 | { | |
1125 | static int said = 0; | |
1126 | bpt->loc_type = new_type; | |
1127 | if (!said) | |
1128 | { | |
1129 | fprintf_filtered (gdb_stdout, _("\ | |
0767c96d | 1130 | Note: automatically using hardware breakpoints for read-only addresses.\n")); |
765dc015 VP |
1131 | said = 1; |
1132 | } | |
1133 | } | |
1134 | } | |
1135 | else if (bpt->loc_type == bp_loc_software_breakpoint | |
1136 | && mr->attrib.mode != MEM_RW) | |
1137 | warning (_("cannot set software breakpoint at readonly address %s"), | |
1138 | paddr (bpt->address)); | |
1139 | } | |
1140 | } | |
1141 | ||
879bfdc2 DJ |
1142 | /* First check to see if we have to handle an overlay. */ |
1143 | if (overlay_debugging == ovly_off | |
1144 | || bpt->section == NULL | |
1145 | || !(section_is_overlay (bpt->section))) | |
1146 | { | |
1147 | /* No overlay handling: just set the breakpoint. */ | |
1148 | ||
1149 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8181d85f | 1150 | val = target_insert_hw_breakpoint (&bpt->target_info); |
879bfdc2 | 1151 | else |
8181d85f | 1152 | val = target_insert_breakpoint (&bpt->target_info); |
879bfdc2 DJ |
1153 | } |
1154 | else | |
1155 | { | |
1156 | /* This breakpoint is in an overlay section. | |
1157 | Shall we set a breakpoint at the LMA? */ | |
1158 | if (!overlay_events_enabled) | |
1159 | { | |
1160 | /* Yes -- overlay event support is not active, | |
1161 | so we must try to set a breakpoint at the LMA. | |
1162 | This will not work for a hardware breakpoint. */ | |
1163 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8a3fe4f8 | 1164 | warning (_("hardware breakpoint %d not supported in overlay!"), |
879bfdc2 DJ |
1165 | bpt->owner->number); |
1166 | else | |
1167 | { | |
1168 | CORE_ADDR addr = overlay_unmapped_address (bpt->address, | |
1169 | bpt->section); | |
1170 | /* Set a software (trap) breakpoint at the LMA. */ | |
8181d85f DJ |
1171 | bpt->overlay_target_info = bpt->target_info; |
1172 | bpt->overlay_target_info.placed_address = addr; | |
1173 | val = target_insert_breakpoint (&bpt->overlay_target_info); | |
879bfdc2 | 1174 | if (val != 0) |
99361f52 DE |
1175 | fprintf_unfiltered (tmp_error_stream, |
1176 | "Overlay breakpoint %d failed: in ROM?\n", | |
879bfdc2 DJ |
1177 | bpt->owner->number); |
1178 | } | |
1179 | } | |
1180 | /* Shall we set a breakpoint at the VMA? */ | |
1181 | if (section_is_mapped (bpt->section)) | |
1182 | { | |
1183 | /* Yes. This overlay section is mapped into memory. */ | |
1184 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8181d85f | 1185 | val = target_insert_hw_breakpoint (&bpt->target_info); |
879bfdc2 | 1186 | else |
8181d85f | 1187 | val = target_insert_breakpoint (&bpt->target_info); |
879bfdc2 DJ |
1188 | } |
1189 | else | |
1190 | { | |
1191 | /* No. This breakpoint will not be inserted. | |
1192 | No error, but do not mark the bp as 'inserted'. */ | |
1193 | return 0; | |
1194 | } | |
1195 | } | |
1196 | ||
1197 | if (val) | |
1198 | { | |
1199 | /* Can't set the breakpoint. */ | |
f5c9a895 | 1200 | if (solib_name_from_address (bpt->address)) |
879bfdc2 DJ |
1201 | { |
1202 | /* See also: disable_breakpoints_in_shlibs. */ | |
1203 | val = 0; | |
0d381245 | 1204 | bpt->shlib_disabled = 1; |
879bfdc2 DJ |
1205 | if (!*disabled_breaks) |
1206 | { | |
1207 | fprintf_unfiltered (tmp_error_stream, | |
1208 | "Cannot insert breakpoint %d.\n", | |
1209 | bpt->owner->number); | |
1210 | fprintf_unfiltered (tmp_error_stream, | |
1211 | "Temporarily disabling shared library breakpoints:\n"); | |
1212 | } | |
1213 | *disabled_breaks = 1; | |
1214 | fprintf_unfiltered (tmp_error_stream, | |
1215 | "breakpoint #%d\n", bpt->owner->number); | |
1216 | } | |
1217 | else | |
879bfdc2 | 1218 | { |
879bfdc2 DJ |
1219 | if (bpt->loc_type == bp_loc_hardware_breakpoint) |
1220 | { | |
1221 | *hw_breakpoint_error = 1; | |
1222 | fprintf_unfiltered (tmp_error_stream, | |
1223 | "Cannot insert hardware breakpoint %d.\n", | |
1224 | bpt->owner->number); | |
1225 | } | |
1226 | else | |
1227 | { | |
1228 | fprintf_unfiltered (tmp_error_stream, | |
1229 | "Cannot insert breakpoint %d.\n", | |
1230 | bpt->owner->number); | |
1231 | fprintf_filtered (tmp_error_stream, | |
1232 | "Error accessing memory address "); | |
ed49a04f | 1233 | fputs_filtered (paddress (bpt->address), tmp_error_stream); |
879bfdc2 DJ |
1234 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1235 | safe_strerror (val)); | |
1236 | } | |
1237 | ||
1238 | } | |
1239 | } | |
1240 | else | |
1241 | bpt->inserted = 1; | |
1242 | ||
1243 | return val; | |
1244 | } | |
1245 | ||
1246 | else if (bpt->loc_type == bp_loc_hardware_watchpoint | |
1247 | /* NOTE drow/2003-09-08: This state only exists for removing | |
1248 | watchpoints. It's not clear that it's necessary... */ | |
1249 | && bpt->owner->disposition != disp_del_at_next_stop) | |
1250 | { | |
a5606eee VP |
1251 | val = target_insert_watchpoint (bpt->address, |
1252 | bpt->length, | |
1253 | bpt->watchpoint_type); | |
1254 | bpt->inserted = (val != -1); | |
879bfdc2 DJ |
1255 | } |
1256 | ||
fe798b75 | 1257 | else if (bpt->owner->type == bp_catchpoint) |
879bfdc2 | 1258 | { |
71fff37b AC |
1259 | struct gdb_exception e = catch_exception (uiout, insert_catchpoint, |
1260 | bpt->owner, RETURN_MASK_ERROR); | |
9cbc821d AC |
1261 | exception_fprintf (gdb_stderr, e, "warning: inserting catchpoint %d: ", |
1262 | bpt->owner->number); | |
1263 | if (e.reason < 0) | |
879bfdc2 DJ |
1264 | bpt->owner->enable_state = bp_disabled; |
1265 | else | |
1266 | bpt->inserted = 1; | |
1640b821 DJ |
1267 | |
1268 | /* We've already printed an error message if there was a problem | |
1269 | inserting this catchpoint, and we've disabled the catchpoint, | |
1270 | so just return success. */ | |
1271 | return 0; | |
879bfdc2 DJ |
1272 | } |
1273 | ||
1274 | return 0; | |
1275 | } | |
1276 | ||
74960c60 VP |
1277 | /* Make sure all breakpoints are inserted in inferior. |
1278 | Throws exception on any error. | |
1279 | A breakpoint that is already inserted won't be inserted | |
1280 | again, so calling this function twice is safe. */ | |
1281 | void | |
1282 | insert_breakpoints (void) | |
1283 | { | |
1284 | struct breakpoint *bpt; | |
1285 | ||
1286 | ALL_BREAKPOINTS (bpt) | |
1287 | if (is_hardware_watchpoint (bpt)) | |
1288 | update_watchpoint (bpt, 0 /* don't reparse. */); | |
1289 | ||
b60e7edf | 1290 | update_global_location_list (1); |
74960c60 | 1291 | |
c35b1492 PA |
1292 | /* update_global_location_list does not insert breakpoints when |
1293 | always_inserted_mode is not enabled. Explicitly insert them | |
1294 | now. */ | |
1295 | if (!breakpoints_always_inserted_mode ()) | |
74960c60 VP |
1296 | insert_breakpoint_locations (); |
1297 | } | |
1298 | ||
c906108c SS |
1299 | /* insert_breakpoints is used when starting or continuing the program. |
1300 | remove_breakpoints is used when the program stops. | |
1301 | Both return zero if successful, | |
1302 | or an `errno' value if could not write the inferior. */ | |
1303 | ||
74960c60 VP |
1304 | static void |
1305 | insert_breakpoint_locations (void) | |
c906108c | 1306 | { |
a5606eee | 1307 | struct breakpoint *bpt; |
879bfdc2 | 1308 | struct bp_location *b, *temp; |
e236ba44 | 1309 | int error = 0; |
c906108c SS |
1310 | int val = 0; |
1311 | int disabled_breaks = 0; | |
81d0cc19 | 1312 | int hw_breakpoint_error = 0; |
c906108c | 1313 | |
81d0cc19 | 1314 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 1315 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 1316 | |
81d0cc19 GS |
1317 | /* Explicitly mark the warning -- this will only be printed if |
1318 | there was an error. */ | |
1319 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
a5606eee | 1320 | |
879bfdc2 DJ |
1321 | ALL_BP_LOCATIONS_SAFE (b, temp) |
1322 | { | |
74960c60 | 1323 | if (!should_be_inserted (b) || b->inserted) |
879bfdc2 DJ |
1324 | continue; |
1325 | ||
f365de73 AS |
1326 | /* There is no point inserting thread-specific breakpoints if the |
1327 | thread no longer exists. */ | |
1328 | if (b->owner->thread != -1 | |
1329 | && !valid_thread_id (b->owner->thread)) | |
1330 | continue; | |
1331 | ||
879bfdc2 | 1332 | val = insert_bp_location (b, tmp_error_stream, |
fa3a767f | 1333 | &disabled_breaks, |
879bfdc2 DJ |
1334 | &hw_breakpoint_error); |
1335 | if (val) | |
e236ba44 | 1336 | error = val; |
879bfdc2 | 1337 | } |
c906108c | 1338 | |
a5606eee VP |
1339 | /* If we failed to insert all locations of a watchpoint, |
1340 | remove them, as half-inserted watchpoint is of limited use. */ | |
1341 | ALL_BREAKPOINTS (bpt) | |
1342 | { | |
1343 | int some_failed = 0; | |
1344 | struct bp_location *loc; | |
1345 | ||
1346 | if (!is_hardware_watchpoint (bpt)) | |
1347 | continue; | |
1348 | ||
d6b74ac4 | 1349 | if (!breakpoint_enabled (bpt)) |
a5606eee | 1350 | continue; |
74960c60 VP |
1351 | |
1352 | if (bpt->disposition == disp_del_at_next_stop) | |
1353 | continue; | |
a5606eee VP |
1354 | |
1355 | for (loc = bpt->loc; loc; loc = loc->next) | |
1356 | if (!loc->inserted) | |
1357 | { | |
1358 | some_failed = 1; | |
1359 | break; | |
1360 | } | |
1361 | if (some_failed) | |
1362 | { | |
1363 | for (loc = bpt->loc; loc; loc = loc->next) | |
1364 | if (loc->inserted) | |
1365 | remove_breakpoint (loc, mark_uninserted); | |
1366 | ||
1367 | hw_breakpoint_error = 1; | |
1368 | fprintf_unfiltered (tmp_error_stream, | |
1369 | "Could not insert hardware watchpoint %d.\n", | |
1370 | bpt->number); | |
1371 | error = -1; | |
1372 | } | |
1373 | } | |
1374 | ||
e236ba44 | 1375 | if (error) |
81d0cc19 GS |
1376 | { |
1377 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1378 | message about possibly exhausted resources. */ | |
879bfdc2 | 1379 | if (hw_breakpoint_error) |
81d0cc19 | 1380 | { |
c6510018 MS |
1381 | fprintf_unfiltered (tmp_error_stream, |
1382 | "Could not insert hardware breakpoints:\n\ | |
1383 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1384 | } |
81d0cc19 GS |
1385 | target_terminal_ours_for_output (); |
1386 | error_stream (tmp_error_stream); | |
1387 | } | |
f7545552 TT |
1388 | |
1389 | do_cleanups (cleanups); | |
c906108c SS |
1390 | } |
1391 | ||
c906108c | 1392 | int |
fba45db2 | 1393 | remove_breakpoints (void) |
c906108c | 1394 | { |
0bde7532 | 1395 | struct bp_location *b; |
c906108c SS |
1396 | int val; |
1397 | ||
0bde7532 | 1398 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1399 | { |
0bde7532 | 1400 | if (b->inserted) |
c5aa993b JM |
1401 | { |
1402 | val = remove_breakpoint (b, mark_uninserted); | |
1403 | if (val != 0) | |
1404 | return val; | |
1405 | } | |
1406 | } | |
c906108c SS |
1407 | return 0; |
1408 | } | |
1409 | ||
692590c1 | 1410 | int |
80ce1ecb | 1411 | remove_hw_watchpoints (void) |
692590c1 | 1412 | { |
0bde7532 | 1413 | struct bp_location *b; |
692590c1 MS |
1414 | int val; |
1415 | ||
0bde7532 | 1416 | ALL_BP_LOCATIONS (b) |
692590c1 | 1417 | { |
0bde7532 | 1418 | if (b->inserted && b->loc_type == bp_loc_hardware_watchpoint) |
692590c1 MS |
1419 | { |
1420 | val = remove_breakpoint (b, mark_uninserted); | |
1421 | if (val != 0) | |
1422 | return val; | |
1423 | } | |
1424 | } | |
1425 | return 0; | |
1426 | } | |
1427 | ||
c906108c | 1428 | int |
fba45db2 | 1429 | reattach_breakpoints (int pid) |
c906108c | 1430 | { |
0bde7532 | 1431 | struct bp_location *b; |
c906108c | 1432 | int val; |
ce696e05 | 1433 | struct cleanup *old_chain = save_inferior_ptid (); |
a4954f26 | 1434 | struct ui_file *tmp_error_stream = mem_fileopen (); |
fa3a767f | 1435 | int dummy1 = 0, dummy2 = 0; |
a4954f26 DJ |
1436 | |
1437 | make_cleanup_ui_file_delete (tmp_error_stream); | |
c906108c | 1438 | |
ce696e05 | 1439 | inferior_ptid = pid_to_ptid (pid); |
0bde7532 | 1440 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1441 | { |
0bde7532 | 1442 | if (b->inserted) |
c5aa993b | 1443 | { |
a4954f26 DJ |
1444 | b->inserted = 0; |
1445 | val = insert_bp_location (b, tmp_error_stream, | |
fa3a767f | 1446 | &dummy1, &dummy2); |
c5aa993b JM |
1447 | if (val != 0) |
1448 | { | |
ce696e05 | 1449 | do_cleanups (old_chain); |
c5aa993b JM |
1450 | return val; |
1451 | } | |
1452 | } | |
1453 | } | |
ce696e05 | 1454 | do_cleanups (old_chain); |
c906108c SS |
1455 | return 0; |
1456 | } | |
1457 | ||
e58b0e63 PA |
1458 | static int internal_breakpoint_number = -1; |
1459 | ||
e62c965a PP |
1460 | static struct breakpoint * |
1461 | create_internal_breakpoint (CORE_ADDR address, enum bptype type) | |
1462 | { | |
e62c965a PP |
1463 | struct symtab_and_line sal; |
1464 | struct breakpoint *b; | |
1465 | ||
1466 | init_sal (&sal); /* initialize to zeroes */ | |
1467 | ||
1468 | sal.pc = address; | |
1469 | sal.section = find_pc_overlay (sal.pc); | |
1470 | ||
1471 | b = set_raw_breakpoint (sal, type); | |
1472 | b->number = internal_breakpoint_number--; | |
1473 | b->disposition = disp_donttouch; | |
1474 | ||
1475 | return b; | |
1476 | } | |
1477 | ||
1478 | static void | |
69de3c6a | 1479 | create_overlay_event_breakpoint (char *func_name) |
e62c965a | 1480 | { |
69de3c6a | 1481 | struct objfile *objfile; |
e62c965a | 1482 | |
69de3c6a PP |
1483 | ALL_OBJFILES (objfile) |
1484 | { | |
1485 | struct breakpoint *b; | |
1486 | struct minimal_symbol *m; | |
1487 | ||
1488 | m = lookup_minimal_symbol_text (func_name, objfile); | |
1489 | if (m == NULL) | |
1490 | continue; | |
e62c965a | 1491 | |
69de3c6a PP |
1492 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), |
1493 | bp_overlay_event); | |
1494 | b->addr_string = xstrdup (func_name); | |
e62c965a | 1495 | |
69de3c6a PP |
1496 | if (overlay_debugging == ovly_auto) |
1497 | { | |
1498 | b->enable_state = bp_enabled; | |
1499 | overlay_events_enabled = 1; | |
1500 | } | |
1501 | else | |
1502 | { | |
1503 | b->enable_state = bp_disabled; | |
1504 | overlay_events_enabled = 0; | |
1505 | } | |
e62c965a PP |
1506 | } |
1507 | update_global_location_list (1); | |
1508 | } | |
1509 | ||
0fd8e87f UW |
1510 | static void |
1511 | create_longjmp_master_breakpoint (char *func_name) | |
1512 | { | |
1513 | struct objfile *objfile; | |
1514 | ||
1515 | ALL_OBJFILES (objfile) | |
1516 | { | |
1517 | struct breakpoint *b; | |
1518 | struct minimal_symbol *m; | |
1519 | ||
1520 | if (!gdbarch_get_longjmp_target_p (get_objfile_arch (objfile))) | |
1521 | continue; | |
1522 | ||
1523 | m = lookup_minimal_symbol_text (func_name, objfile); | |
1524 | if (m == NULL) | |
1525 | continue; | |
1526 | ||
1527 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), | |
1528 | bp_longjmp_master); | |
1529 | b->addr_string = xstrdup (func_name); | |
1530 | b->enable_state = bp_disabled; | |
1531 | } | |
1532 | update_global_location_list (1); | |
1533 | } | |
1534 | ||
c906108c | 1535 | void |
fba45db2 | 1536 | update_breakpoints_after_exec (void) |
c906108c | 1537 | { |
c5aa993b JM |
1538 | struct breakpoint *b; |
1539 | struct breakpoint *temp; | |
25b22b0a | 1540 | struct bp_location *bploc; |
c906108c | 1541 | |
25b22b0a PA |
1542 | /* We're about to delete breakpoints from GDB's lists. If the |
1543 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
1544 | writing the breakpoints' "shadow contents" back into memory. The | |
1545 | "shadow contents" are NOT valid after an exec, so GDB should not | |
1546 | do that. Instead, the target is responsible from marking | |
1547 | breakpoints out as soon as it detects an exec. We don't do that | |
1548 | here instead, because there may be other attempts to delete | |
1549 | breakpoints after detecting an exec and before reaching here. */ | |
1550 | ALL_BP_LOCATIONS (bploc) | |
1551 | gdb_assert (!bploc->inserted); | |
c906108c SS |
1552 | |
1553 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1554 | { |
1555 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
1556 | if (b->type == bp_shlib_event) | |
1557 | { | |
1558 | delete_breakpoint (b); | |
1559 | continue; | |
1560 | } | |
c906108c | 1561 | |
1900040c | 1562 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
1563 | as must overlay event and longjmp master breakpoints. */ |
1564 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
1565 | || b->type == bp_longjmp_master) | |
c4093a6a JM |
1566 | { |
1567 | delete_breakpoint (b); | |
1568 | continue; | |
1569 | } | |
1570 | ||
c5aa993b JM |
1571 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1572 | if (b->type == bp_step_resume) | |
1573 | { | |
1574 | delete_breakpoint (b); | |
1575 | continue; | |
1576 | } | |
1577 | ||
611c83ae PA |
1578 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
1579 | after an exec. */ | |
1580 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume) | |
1581 | { | |
1582 | delete_breakpoint (b); | |
1583 | continue; | |
1584 | } | |
1585 | ||
ce78b96d JB |
1586 | if (b->type == bp_catchpoint) |
1587 | { | |
1588 | /* For now, none of the bp_catchpoint breakpoints need to | |
1589 | do anything at this point. In the future, if some of | |
1590 | the catchpoints need to something, we will need to add | |
1591 | a new method, and call this method from here. */ | |
1592 | continue; | |
1593 | } | |
1594 | ||
c5aa993b JM |
1595 | /* bp_finish is a special case. The only way we ought to be able |
1596 | to see one of these when an exec() has happened, is if the user | |
1597 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1598 | carries them to the call-site of the current callee, by setting | |
1599 | a temporary bp there and resuming. But in this case, the finish | |
1600 | will carry them entirely through the vfork & exec. | |
1601 | ||
1602 | We don't want to allow a bp_finish to remain inserted now. But | |
1603 | we can't safely delete it, 'cause finish_command has a handle to | |
1604 | the bp on a bpstat, and will later want to delete it. There's a | |
1605 | chance (and I've seen it happen) that if we delete the bp_finish | |
1606 | here, that its storage will get reused by the time finish_command | |
1607 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1608 | We really must allow finish_command to delete a bp_finish. | |
1609 | ||
53a5351d JM |
1610 | In the absense of a general solution for the "how do we know |
1611 | it's safe to delete something others may have handles to?" | |
1612 | problem, what we'll do here is just uninsert the bp_finish, and | |
1613 | let finish_command delete it. | |
1614 | ||
1615 | (We know the bp_finish is "doomed" in the sense that it's | |
1616 | momentary, and will be deleted as soon as finish_command sees | |
1617 | the inferior stopped. So it doesn't matter that the bp's | |
1618 | address is probably bogus in the new a.out, unlike e.g., the | |
1619 | solib breakpoints.) */ | |
c5aa993b | 1620 | |
c5aa993b JM |
1621 | if (b->type == bp_finish) |
1622 | { | |
1623 | continue; | |
1624 | } | |
1625 | ||
1626 | /* Without a symbolic address, we have little hope of the | |
1627 | pre-exec() address meaning the same thing in the post-exec() | |
1628 | a.out. */ | |
1629 | if (b->addr_string == NULL) | |
1630 | { | |
1631 | delete_breakpoint (b); | |
1632 | continue; | |
1633 | } | |
c5aa993b | 1634 | } |
1900040c | 1635 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
69de3c6a | 1636 | create_overlay_event_breakpoint ("_ovly_debug_event"); |
0fd8e87f UW |
1637 | create_longjmp_master_breakpoint ("longjmp"); |
1638 | create_longjmp_master_breakpoint ("_longjmp"); | |
1639 | create_longjmp_master_breakpoint ("siglongjmp"); | |
1640 | create_longjmp_master_breakpoint ("_siglongjmp"); | |
c906108c SS |
1641 | } |
1642 | ||
1643 | int | |
fba45db2 | 1644 | detach_breakpoints (int pid) |
c906108c | 1645 | { |
0bde7532 | 1646 | struct bp_location *b; |
c906108c | 1647 | int val; |
ce696e05 | 1648 | struct cleanup *old_chain = save_inferior_ptid (); |
c5aa993b | 1649 | |
39f77062 | 1650 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 1651 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 1652 | |
ce696e05 KB |
1653 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1654 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1655 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1656 | { |
0bde7532 | 1657 | if (b->inserted) |
c5aa993b JM |
1658 | { |
1659 | val = remove_breakpoint (b, mark_inserted); | |
1660 | if (val != 0) | |
1661 | { | |
ce696e05 | 1662 | do_cleanups (old_chain); |
c5aa993b JM |
1663 | return val; |
1664 | } | |
1665 | } | |
1666 | } | |
ce696e05 | 1667 | do_cleanups (old_chain); |
c906108c SS |
1668 | return 0; |
1669 | } | |
1670 | ||
1671 | static int | |
0bde7532 | 1672 | remove_breakpoint (struct bp_location *b, insertion_state_t is) |
c906108c SS |
1673 | { |
1674 | int val; | |
c5aa993b | 1675 | |
0bde7532 | 1676 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
1677 | /* Permanent breakpoints cannot be inserted or removed. */ |
1678 | return 0; | |
1679 | ||
74960c60 VP |
1680 | /* The type of none suggests that owner is actually deleted. |
1681 | This should not ever happen. */ | |
1682 | gdb_assert (b->owner->type != bp_none); | |
0bde7532 DJ |
1683 | |
1684 | if (b->loc_type == bp_loc_software_breakpoint | |
1685 | || b->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 1686 | { |
c02f5703 MS |
1687 | /* "Normal" instruction breakpoint: either the standard |
1688 | trap-instruction bp (bp_breakpoint), or a | |
1689 | bp_hardware_breakpoint. */ | |
1690 | ||
1691 | /* First check to see if we have to handle an overlay. */ | |
1692 | if (overlay_debugging == ovly_off | |
0bde7532 DJ |
1693 | || b->section == NULL |
1694 | || !(section_is_overlay (b->section))) | |
c02f5703 MS |
1695 | { |
1696 | /* No overlay handling: just remove the breakpoint. */ | |
1697 | ||
0bde7532 | 1698 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1699 | val = target_remove_hw_breakpoint (&b->target_info); |
c02f5703 | 1700 | else |
8181d85f | 1701 | val = target_remove_breakpoint (&b->target_info); |
c02f5703 | 1702 | } |
c906108c SS |
1703 | else |
1704 | { | |
c02f5703 MS |
1705 | /* This breakpoint is in an overlay section. |
1706 | Did we set a breakpoint at the LMA? */ | |
1707 | if (!overlay_events_enabled) | |
1708 | { | |
1709 | /* Yes -- overlay event support is not active, so we | |
1710 | should have set a breakpoint at the LMA. Remove it. | |
1711 | */ | |
c02f5703 MS |
1712 | /* Ignore any failures: if the LMA is in ROM, we will |
1713 | have already warned when we failed to insert it. */ | |
0bde7532 | 1714 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1715 | target_remove_hw_breakpoint (&b->overlay_target_info); |
c02f5703 | 1716 | else |
8181d85f | 1717 | target_remove_breakpoint (&b->overlay_target_info); |
c02f5703 MS |
1718 | } |
1719 | /* Did we set a breakpoint at the VMA? | |
1720 | If so, we will have marked the breakpoint 'inserted'. */ | |
0bde7532 | 1721 | if (b->inserted) |
c906108c | 1722 | { |
c02f5703 MS |
1723 | /* Yes -- remove it. Previously we did not bother to |
1724 | remove the breakpoint if the section had been | |
1725 | unmapped, but let's not rely on that being safe. We | |
1726 | don't know what the overlay manager might do. */ | |
0bde7532 | 1727 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1728 | val = target_remove_hw_breakpoint (&b->target_info); |
aa67235e UW |
1729 | |
1730 | /* However, we should remove *software* breakpoints only | |
1731 | if the section is still mapped, or else we overwrite | |
1732 | wrong code with the saved shadow contents. */ | |
1733 | else if (section_is_mapped (b->section)) | |
8181d85f | 1734 | val = target_remove_breakpoint (&b->target_info); |
aa67235e UW |
1735 | else |
1736 | val = 0; | |
c906108c | 1737 | } |
c02f5703 MS |
1738 | else |
1739 | { | |
1740 | /* No -- not inserted, so no need to remove. No error. */ | |
1741 | val = 0; | |
1742 | } | |
c906108c | 1743 | } |
879d1e6b UW |
1744 | |
1745 | /* In some cases, we might not be able to remove a breakpoint | |
1746 | in a shared library that has already been removed, but we | |
1747 | have not yet processed the shlib unload event. */ | |
f5c9a895 | 1748 | if (val && solib_name_from_address (b->address)) |
879d1e6b UW |
1749 | val = 0; |
1750 | ||
c906108c SS |
1751 | if (val) |
1752 | return val; | |
0bde7532 | 1753 | b->inserted = (is == mark_inserted); |
c906108c | 1754 | } |
a5606eee | 1755 | else if (b->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 1756 | { |
278cd55f AC |
1757 | struct value *v; |
1758 | struct value *n; | |
c5aa993b | 1759 | |
0bde7532 | 1760 | b->inserted = (is == mark_inserted); |
a5606eee VP |
1761 | val = target_remove_watchpoint (b->address, b->length, |
1762 | b->watchpoint_type); | |
2e70b7b9 | 1763 | |
c906108c | 1764 | /* Failure to remove any of the hardware watchpoints comes here. */ |
0bde7532 | 1765 | if ((is == mark_uninserted) && (b->inserted)) |
8a3fe4f8 | 1766 | warning (_("Could not remove hardware watchpoint %d."), |
0bde7532 | 1767 | b->owner->number); |
c906108c | 1768 | } |
ce78b96d JB |
1769 | else if (b->owner->type == bp_catchpoint |
1770 | && breakpoint_enabled (b->owner) | |
1771 | && !b->duplicate) | |
1772 | { | |
1773 | gdb_assert (b->owner->ops != NULL && b->owner->ops->remove != NULL); | |
1774 | ||
1775 | val = b->owner->ops->remove (b->owner); | |
1776 | if (val) | |
1777 | return val; | |
1778 | b->inserted = (is == mark_inserted); | |
1779 | } | |
c906108c SS |
1780 | |
1781 | return 0; | |
1782 | } | |
1783 | ||
1784 | /* Clear the "inserted" flag in all breakpoints. */ | |
1785 | ||
25b22b0a | 1786 | void |
fba45db2 | 1787 | mark_breakpoints_out (void) |
c906108c | 1788 | { |
075f6582 | 1789 | struct bp_location *bpt; |
c906108c | 1790 | |
075f6582 DJ |
1791 | ALL_BP_LOCATIONS (bpt) |
1792 | bpt->inserted = 0; | |
c906108c SS |
1793 | } |
1794 | ||
53a5351d JM |
1795 | /* Clear the "inserted" flag in all breakpoints and delete any |
1796 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1797 | |
1798 | Plus other such housekeeping that has to be done for breakpoints | |
1799 | between runs. | |
1800 | ||
53a5351d JM |
1801 | Note: this function gets called at the end of a run (by |
1802 | generic_mourn_inferior) and when a run begins (by | |
1803 | init_wait_for_inferior). */ | |
c906108c SS |
1804 | |
1805 | ||
1806 | ||
1807 | void | |
fba45db2 | 1808 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 1809 | { |
52f0bd74 | 1810 | struct breakpoint *b, *temp; |
075f6582 | 1811 | struct bp_location *bpt; |
1c5cfe86 | 1812 | int ix; |
c906108c | 1813 | |
50c71eaf PA |
1814 | /* If breakpoint locations are shared across processes, then there's |
1815 | nothing to do. */ | |
2567c7d9 | 1816 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
1817 | return; |
1818 | ||
075f6582 | 1819 | ALL_BP_LOCATIONS (bpt) |
514f746b AR |
1820 | if (bpt->owner->enable_state != bp_permanent) |
1821 | bpt->inserted = 0; | |
075f6582 | 1822 | |
c906108c | 1823 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 1824 | { |
c5aa993b JM |
1825 | switch (b->type) |
1826 | { | |
1827 | case bp_call_dummy: | |
1828 | case bp_watchpoint_scope: | |
c906108c | 1829 | |
c5aa993b JM |
1830 | /* If the call dummy breakpoint is at the entry point it will |
1831 | cause problems when the inferior is rerun, so we better | |
1832 | get rid of it. | |
c906108c | 1833 | |
c5aa993b JM |
1834 | Also get rid of scope breakpoints. */ |
1835 | delete_breakpoint (b); | |
1836 | break; | |
c906108c | 1837 | |
c5aa993b JM |
1838 | case bp_watchpoint: |
1839 | case bp_hardware_watchpoint: | |
1840 | case bp_read_watchpoint: | |
1841 | case bp_access_watchpoint: | |
c906108c | 1842 | |
c5aa993b JM |
1843 | /* Likewise for watchpoints on local expressions. */ |
1844 | if (b->exp_valid_block != NULL) | |
1845 | delete_breakpoint (b); | |
967af18d | 1846 | else if (context == inf_starting) |
c860120c PM |
1847 | { |
1848 | /* Reset val field to force reread of starting value | |
1849 | in insert_breakpoints. */ | |
1850 | if (b->val) | |
1851 | value_free (b->val); | |
1852 | b->val = NULL; | |
fa4727a6 | 1853 | b->val_valid = 0; |
c860120c | 1854 | } |
c5aa993b JM |
1855 | break; |
1856 | default: | |
c5aa993b JM |
1857 | break; |
1858 | } | |
1859 | } | |
1c5cfe86 PA |
1860 | |
1861 | /* Get rid of the moribund locations. */ | |
1862 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bpt); ++ix) | |
1863 | free_bp_location (bpt); | |
1864 | VEC_free (bp_location_p, moribund_locations); | |
c906108c SS |
1865 | } |
1866 | ||
c2c6d25f JM |
1867 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1868 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1869 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1870 | permanent breakpoint. | |
1871 | - When continuing from a location with an ordinary breakpoint, we | |
1872 | actually single step once before calling insert_breakpoints. | |
1873 | - When continuing from a localion with a permanent breakpoint, we | |
1874 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1875 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1876 | |
c2c6d25f | 1877 | enum breakpoint_here |
fba45db2 | 1878 | breakpoint_here_p (CORE_ADDR pc) |
c906108c | 1879 | { |
89f9893c | 1880 | const struct bp_location *bpt; |
c2c6d25f | 1881 | int any_breakpoint_here = 0; |
c906108c | 1882 | |
075f6582 DJ |
1883 | ALL_BP_LOCATIONS (bpt) |
1884 | { | |
1885 | if (bpt->loc_type != bp_loc_software_breakpoint | |
1886 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1887 | continue; | |
1888 | ||
468d015d | 1889 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1890 | || bpt->owner->enable_state == bp_permanent) |
1891 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1892 | { | |
1893 | if (overlay_debugging | |
1894 | && section_is_overlay (bpt->section) | |
1895 | && !section_is_mapped (bpt->section)) | |
1896 | continue; /* unmapped overlay -- can't be a match */ | |
1897 | else if (bpt->owner->enable_state == bp_permanent) | |
1898 | return permanent_breakpoint_here; | |
1899 | else | |
1900 | any_breakpoint_here = 1; | |
1901 | } | |
1902 | } | |
c906108c | 1903 | |
c2c6d25f | 1904 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1905 | } |
1906 | ||
1c5cfe86 PA |
1907 | /* Return true if there's a moribund breakpoint at PC. */ |
1908 | ||
1909 | int | |
1910 | moribund_breakpoint_here_p (CORE_ADDR pc) | |
1911 | { | |
1912 | struct bp_location *loc; | |
1913 | int ix; | |
1914 | ||
1915 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
1916 | if (loc->address == pc) | |
1917 | return 1; | |
1918 | ||
1919 | return 0; | |
1920 | } | |
c2c6d25f | 1921 | |
c36b740a VP |
1922 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
1923 | inserted using regular breakpoint_chain/bp_location_chain mechanism. | |
1924 | This does not check for single-step breakpoints, which are | |
1925 | inserted and removed using direct target manipulation. */ | |
c906108c SS |
1926 | |
1927 | int | |
c36b740a | 1928 | regular_breakpoint_inserted_here_p (CORE_ADDR pc) |
c906108c | 1929 | { |
89f9893c | 1930 | const struct bp_location *bpt; |
c906108c | 1931 | |
075f6582 | 1932 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1933 | { |
075f6582 DJ |
1934 | if (bpt->loc_type != bp_loc_software_breakpoint |
1935 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1936 | continue; | |
1937 | ||
1938 | if (bpt->inserted | |
1939 | && bpt->address == pc) /* bp is inserted and matches pc */ | |
1940 | { | |
1941 | if (overlay_debugging | |
1942 | && section_is_overlay (bpt->section) | |
1943 | && !section_is_mapped (bpt->section)) | |
1944 | continue; /* unmapped overlay -- can't be a match */ | |
1945 | else | |
1946 | return 1; | |
1947 | } | |
c5aa993b | 1948 | } |
c36b740a VP |
1949 | return 0; |
1950 | } | |
1951 | ||
1952 | /* Returns non-zero iff there's either regular breakpoint | |
1953 | or a single step breakpoint inserted at PC. */ | |
1954 | ||
1955 | int | |
1956 | breakpoint_inserted_here_p (CORE_ADDR pc) | |
1957 | { | |
1958 | if (regular_breakpoint_inserted_here_p (pc)) | |
1959 | return 1; | |
c906108c | 1960 | |
1aafd4da UW |
1961 | if (single_step_breakpoint_inserted_here_p (pc)) |
1962 | return 1; | |
1963 | ||
c906108c SS |
1964 | return 0; |
1965 | } | |
1966 | ||
4fa8626c DJ |
1967 | /* This function returns non-zero iff there is a software breakpoint |
1968 | inserted at PC. */ | |
1969 | ||
1970 | int | |
1971 | software_breakpoint_inserted_here_p (CORE_ADDR pc) | |
1972 | { | |
89f9893c | 1973 | const struct bp_location *bpt; |
4fa8626c DJ |
1974 | int any_breakpoint_here = 0; |
1975 | ||
1976 | ALL_BP_LOCATIONS (bpt) | |
1977 | { | |
1978 | if (bpt->loc_type != bp_loc_software_breakpoint) | |
1979 | continue; | |
1980 | ||
0d381245 | 1981 | if (bpt->inserted |
4fa8626c DJ |
1982 | && bpt->address == pc) /* bp is enabled and matches pc */ |
1983 | { | |
1984 | if (overlay_debugging | |
1985 | && section_is_overlay (bpt->section) | |
1986 | && !section_is_mapped (bpt->section)) | |
1987 | continue; /* unmapped overlay -- can't be a match */ | |
1988 | else | |
1989 | return 1; | |
1990 | } | |
1991 | } | |
1992 | ||
1aafd4da UW |
1993 | /* Also check for software single-step breakpoints. */ |
1994 | if (single_step_breakpoint_inserted_here_p (pc)) | |
1995 | return 1; | |
1996 | ||
4fa8626c DJ |
1997 | return 0; |
1998 | } | |
1999 | ||
075f6582 DJ |
2000 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
2001 | PC is valid for process/thread PTID. */ | |
c906108c SS |
2002 | |
2003 | int | |
39f77062 | 2004 | breakpoint_thread_match (CORE_ADDR pc, ptid_t ptid) |
c906108c | 2005 | { |
89f9893c | 2006 | const struct bp_location *bpt; |
4a306c9a | 2007 | /* The thread and task IDs associated to PTID, computed lazily. */ |
a6f1cd96 | 2008 | int thread = -1; |
4a306c9a | 2009 | int task = 0; |
a6f1cd96 | 2010 | |
075f6582 | 2011 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 2012 | { |
075f6582 DJ |
2013 | if (bpt->loc_type != bp_loc_software_breakpoint |
2014 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
2015 | continue; | |
2016 | ||
a6f1cd96 JB |
2017 | if (!breakpoint_enabled (bpt->owner) |
2018 | && bpt->owner->enable_state != bp_permanent) | |
2019 | continue; | |
2020 | ||
2021 | if (bpt->address != pc) | |
2022 | continue; | |
2023 | ||
2024 | if (bpt->owner->thread != -1) | |
075f6582 | 2025 | { |
a6f1cd96 JB |
2026 | /* This is a thread-specific breakpoint. Check that ptid |
2027 | matches that thread. If thread hasn't been computed yet, | |
2028 | it is now time to do so. */ | |
2029 | if (thread == -1) | |
2030 | thread = pid_to_thread_id (ptid); | |
2031 | if (bpt->owner->thread != thread) | |
2032 | continue; | |
075f6582 | 2033 | } |
a6f1cd96 | 2034 | |
4a306c9a JB |
2035 | if (bpt->owner->task != 0) |
2036 | { | |
2037 | /* This is a task-specific breakpoint. Check that ptid | |
2038 | matches that task. If task hasn't been computed yet, | |
2039 | it is now time to do so. */ | |
2040 | if (task == 0) | |
2041 | task = ada_get_task_number (ptid); | |
2042 | if (bpt->owner->task != task) | |
2043 | continue; | |
2044 | } | |
2045 | ||
a6f1cd96 JB |
2046 | if (overlay_debugging |
2047 | && section_is_overlay (bpt->section) | |
2048 | && !section_is_mapped (bpt->section)) | |
2049 | continue; /* unmapped overlay -- can't be a match */ | |
2050 | ||
2051 | return 1; | |
c5aa993b | 2052 | } |
c906108c SS |
2053 | |
2054 | return 0; | |
2055 | } | |
c906108c | 2056 | \f |
c5aa993b | 2057 | |
c906108c SS |
2058 | /* bpstat stuff. External routines' interfaces are documented |
2059 | in breakpoint.h. */ | |
2060 | ||
2061 | int | |
fba45db2 | 2062 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c | 2063 | { |
533be4dd | 2064 | return (ep->type == bp_catchpoint); |
c906108c SS |
2065 | } |
2066 | ||
198757a8 VP |
2067 | void |
2068 | bpstat_free (bpstat bs) | |
2069 | { | |
2070 | if (bs->old_val != NULL) | |
2071 | value_free (bs->old_val); | |
2072 | free_command_lines (&bs->commands); | |
2073 | xfree (bs); | |
2074 | } | |
2075 | ||
c906108c SS |
2076 | /* Clear a bpstat so that it says we are not at any breakpoint. |
2077 | Also free any storage that is part of a bpstat. */ | |
2078 | ||
2079 | void | |
fba45db2 | 2080 | bpstat_clear (bpstat *bsp) |
c906108c SS |
2081 | { |
2082 | bpstat p; | |
2083 | bpstat q; | |
2084 | ||
2085 | if (bsp == 0) | |
2086 | return; | |
2087 | p = *bsp; | |
2088 | while (p != NULL) | |
2089 | { | |
2090 | q = p->next; | |
198757a8 | 2091 | bpstat_free (p); |
c906108c SS |
2092 | p = q; |
2093 | } | |
2094 | *bsp = NULL; | |
2095 | } | |
2096 | ||
2097 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
2098 | is part of the bpstat is copied as well. */ | |
2099 | ||
2100 | bpstat | |
fba45db2 | 2101 | bpstat_copy (bpstat bs) |
c906108c SS |
2102 | { |
2103 | bpstat p = NULL; | |
2104 | bpstat tmp; | |
2105 | bpstat retval = NULL; | |
2106 | ||
2107 | if (bs == NULL) | |
2108 | return bs; | |
2109 | ||
2110 | for (; bs != NULL; bs = bs->next) | |
2111 | { | |
2112 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
2113 | memcpy (tmp, bs, sizeof (*tmp)); | |
31cc81e9 DJ |
2114 | if (bs->commands != NULL) |
2115 | tmp->commands = copy_command_lines (bs->commands); | |
2116 | if (bs->old_val != NULL) | |
3c3185ac JK |
2117 | { |
2118 | tmp->old_val = value_copy (bs->old_val); | |
2119 | release_value (tmp->old_val); | |
2120 | } | |
31cc81e9 | 2121 | |
c906108c SS |
2122 | if (p == NULL) |
2123 | /* This is the first thing in the chain. */ | |
2124 | retval = tmp; | |
2125 | else | |
2126 | p->next = tmp; | |
2127 | p = tmp; | |
2128 | } | |
2129 | p->next = NULL; | |
2130 | return retval; | |
2131 | } | |
2132 | ||
2133 | /* Find the bpstat associated with this breakpoint */ | |
2134 | ||
2135 | bpstat | |
fba45db2 | 2136 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 2137 | { |
c5aa993b JM |
2138 | if (bsp == NULL) |
2139 | return NULL; | |
c906108c | 2140 | |
c5aa993b JM |
2141 | for (; bsp != NULL; bsp = bsp->next) |
2142 | { | |
4f8d1dc6 | 2143 | if (bsp->breakpoint_at && bsp->breakpoint_at->owner == breakpoint) |
c5aa993b JM |
2144 | return bsp; |
2145 | } | |
c906108c SS |
2146 | return NULL; |
2147 | } | |
2148 | ||
2149 | /* Find a step_resume breakpoint associated with this bpstat. | |
2150 | (If there are multiple step_resume bp's on the list, this function | |
2151 | will arbitrarily pick one.) | |
2152 | ||
2153 | It is an error to use this function if BPSTAT doesn't contain a | |
2154 | step_resume breakpoint. | |
2155 | ||
2156 | See wait_for_inferior's use of this function. */ | |
2157 | struct breakpoint * | |
fba45db2 | 2158 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c | 2159 | { |
8601f500 MS |
2160 | int current_thread; |
2161 | ||
8a3fe4f8 | 2162 | gdb_assert (bsp != NULL); |
c906108c | 2163 | |
8601f500 MS |
2164 | current_thread = pid_to_thread_id (inferior_ptid); |
2165 | ||
c906108c SS |
2166 | for (; bsp != NULL; bsp = bsp->next) |
2167 | { | |
059fb39f PM |
2168 | if ((bsp->breakpoint_at != NULL) |
2169 | && (bsp->breakpoint_at->owner->type == bp_step_resume) | |
2170 | && (bsp->breakpoint_at->owner->thread == current_thread | |
2171 | || bsp->breakpoint_at->owner->thread == -1)) | |
4f8d1dc6 | 2172 | return bsp->breakpoint_at->owner; |
c906108c SS |
2173 | } |
2174 | ||
8a3fe4f8 | 2175 | internal_error (__FILE__, __LINE__, _("No step_resume breakpoint found.")); |
c906108c SS |
2176 | } |
2177 | ||
2178 | ||
8671a17b | 2179 | /* Put in *NUM the breakpoint number of the first breakpoint we are stopped |
c906108c SS |
2180 | at. *BSP upon return is a bpstat which points to the remaining |
2181 | breakpoints stopped at (but which is not guaranteed to be good for | |
2182 | anything but further calls to bpstat_num). | |
8671a17b PA |
2183 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
2184 | Return -1 if stopped at a breakpoint that has been deleted since | |
2185 | we set it. | |
2186 | Return 1 otherwise. */ | |
c906108c SS |
2187 | |
2188 | int | |
8671a17b | 2189 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
2190 | { |
2191 | struct breakpoint *b; | |
2192 | ||
2193 | if ((*bsp) == NULL) | |
2194 | return 0; /* No more breakpoint values */ | |
8671a17b | 2195 | |
4f8d1dc6 VP |
2196 | /* We assume we'll never have several bpstats that |
2197 | correspond to a single breakpoint -- otherwise, | |
2198 | this function might return the same number more | |
2199 | than once and this will look ugly. */ | |
2200 | b = (*bsp)->breakpoint_at ? (*bsp)->breakpoint_at->owner : NULL; | |
8671a17b PA |
2201 | *bsp = (*bsp)->next; |
2202 | if (b == NULL) | |
2203 | return -1; /* breakpoint that's been deleted since */ | |
2204 | ||
2205 | *num = b->number; /* We have its number */ | |
2206 | return 1; | |
c906108c SS |
2207 | } |
2208 | ||
2209 | /* Modify BS so that the actions will not be performed. */ | |
2210 | ||
2211 | void | |
fba45db2 | 2212 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
2213 | { |
2214 | for (; bs != NULL; bs = bs->next) | |
2215 | { | |
c2b8ed2c | 2216 | free_command_lines (&bs->commands); |
c906108c SS |
2217 | if (bs->old_val != NULL) |
2218 | { | |
2219 | value_free (bs->old_val); | |
2220 | bs->old_val = NULL; | |
2221 | } | |
2222 | } | |
2223 | } | |
2224 | ||
f3b1572e PA |
2225 | /* Called when a command is about to proceed the inferior. */ |
2226 | ||
2227 | static void | |
2228 | breakpoint_about_to_proceed (void) | |
2229 | { | |
2230 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
2231 | { | |
2232 | struct thread_info *tp = inferior_thread (); | |
2233 | ||
2234 | /* Allow inferior function calls in breakpoint commands to not | |
2235 | interrupt the command list. When the call finishes | |
2236 | successfully, the inferior will be standing at the same | |
2237 | breakpoint as if nothing happened. */ | |
2238 | if (tp->in_infcall) | |
2239 | return; | |
2240 | } | |
2241 | ||
2242 | breakpoint_proceeded = 1; | |
2243 | } | |
2244 | ||
c906108c | 2245 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ |
c906108c | 2246 | static void |
4efb68b1 | 2247 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
2248 | { |
2249 | executing_breakpoint_commands = 0; | |
2250 | } | |
2251 | ||
2252 | /* Execute all the commands associated with all the breakpoints at this | |
2253 | location. Any of these commands could cause the process to proceed | |
2254 | beyond this point, etc. We look out for such changes by checking | |
347bddb7 | 2255 | the global "breakpoint_proceeded" after each command. |
c906108c | 2256 | |
347bddb7 PA |
2257 | Returns true if a breakpoint command resumed the inferior. In that |
2258 | case, it is the caller's responsibility to recall it again with the | |
2259 | bpstat of the current thread. */ | |
2260 | ||
2261 | static int | |
2262 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
2263 | { |
2264 | bpstat bs; | |
2265 | struct cleanup *old_chain; | |
347bddb7 | 2266 | int again = 0; |
c906108c SS |
2267 | |
2268 | /* Avoid endless recursion if a `source' command is contained | |
2269 | in bs->commands. */ | |
2270 | if (executing_breakpoint_commands) | |
347bddb7 | 2271 | return 0; |
c906108c SS |
2272 | |
2273 | executing_breakpoint_commands = 1; | |
2274 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
2275 | ||
c906108c SS |
2276 | /* This pointer will iterate over the list of bpstat's. */ |
2277 | bs = *bsp; | |
2278 | ||
2279 | breakpoint_proceeded = 0; | |
2280 | for (; bs != NULL; bs = bs->next) | |
2281 | { | |
6c50ab1c JB |
2282 | struct command_line *cmd; |
2283 | struct cleanup *this_cmd_tree_chain; | |
2284 | ||
2285 | /* Take ownership of the BSP's command tree, if it has one. | |
2286 | ||
2287 | The command tree could legitimately contain commands like | |
2288 | 'step' and 'next', which call clear_proceed_status, which | |
2289 | frees stop_bpstat's command tree. To make sure this doesn't | |
2290 | free the tree we're executing out from under us, we need to | |
2291 | take ownership of the tree ourselves. Since a given bpstat's | |
2292 | commands are only executed once, we don't need to copy it; we | |
2293 | can clear the pointer in the bpstat, and make sure we free | |
2294 | the tree when we're done. */ | |
c906108c | 2295 | cmd = bs->commands; |
6c50ab1c JB |
2296 | bs->commands = 0; |
2297 | this_cmd_tree_chain = make_cleanup_free_command_lines (&cmd); | |
2298 | ||
c906108c SS |
2299 | while (cmd != NULL) |
2300 | { | |
2301 | execute_control_command (cmd); | |
2302 | ||
2303 | if (breakpoint_proceeded) | |
2304 | break; | |
2305 | else | |
2306 | cmd = cmd->next; | |
2307 | } | |
6c50ab1c JB |
2308 | |
2309 | /* We can free this command tree now. */ | |
2310 | do_cleanups (this_cmd_tree_chain); | |
2311 | ||
c906108c | 2312 | if (breakpoint_proceeded) |
32c1e744 VP |
2313 | { |
2314 | if (target_can_async_p ()) | |
347bddb7 PA |
2315 | /* If we are in async mode, then the target might be still |
2316 | running, not stopped at any breakpoint, so nothing for | |
2317 | us to do here -- just return to the event loop. */ | |
2318 | ; | |
32c1e744 VP |
2319 | else |
2320 | /* In sync mode, when execute_control_command returns | |
2321 | we're already standing on the next breakpoint. | |
347bddb7 PA |
2322 | Breakpoint commands for that stop were not run, since |
2323 | execute_command does not run breakpoint commands -- | |
2324 | only command_line_handler does, but that one is not | |
2325 | involved in execution of breakpoint commands. So, we | |
2326 | can now execute breakpoint commands. It should be | |
2327 | noted that making execute_command do bpstat actions is | |
2328 | not an option -- in this case we'll have recursive | |
2329 | invocation of bpstat for each breakpoint with a | |
2330 | command, and can easily blow up GDB stack. Instead, we | |
2331 | return true, which will trigger the caller to recall us | |
2332 | with the new stop_bpstat. */ | |
2333 | again = 1; | |
2334 | break; | |
32c1e744 | 2335 | } |
c906108c | 2336 | } |
c2b8ed2c | 2337 | do_cleanups (old_chain); |
347bddb7 PA |
2338 | return again; |
2339 | } | |
2340 | ||
2341 | void | |
2342 | bpstat_do_actions (void) | |
2343 | { | |
2344 | /* Do any commands attached to breakpoint we are stopped at. */ | |
2345 | while (!ptid_equal (inferior_ptid, null_ptid) | |
2346 | && target_has_execution | |
2347 | && !is_exited (inferior_ptid) | |
2348 | && !is_executing (inferior_ptid)) | |
2349 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
2350 | and only return when it is stopped at the next breakpoint, we | |
2351 | keep doing breakpoint actions until it returns false to | |
2352 | indicate the inferior was not resumed. */ | |
2353 | if (!bpstat_do_actions_1 (&inferior_thread ()->stop_bpstat)) | |
2354 | break; | |
c906108c SS |
2355 | } |
2356 | ||
fa4727a6 DJ |
2357 | /* Print out the (old or new) value associated with a watchpoint. */ |
2358 | ||
2359 | static void | |
2360 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
2361 | { | |
2362 | if (val == NULL) | |
2363 | fprintf_unfiltered (stream, _("<unreadable>")); | |
2364 | else | |
79a45b7d TT |
2365 | { |
2366 | struct value_print_options opts; | |
2367 | get_user_print_options (&opts); | |
2368 | value_print (val, stream, &opts); | |
2369 | } | |
fa4727a6 DJ |
2370 | } |
2371 | ||
e514a9d6 | 2372 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 2373 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
2374 | by having it set different print_it values. |
2375 | ||
2376 | Current scheme: When we stop, bpstat_print() is called. It loops | |
2377 | through the bpstat list of things causing this stop, calling the | |
2378 | print_bp_stop_message function on each one. The behavior of the | |
2379 | print_bp_stop_message function depends on the print_it field of | |
2380 | bpstat. If such field so indicates, call this function here. | |
2381 | ||
2382 | Return values from this routine (ultimately used by bpstat_print() | |
2383 | and normal_stop() to decide what to do): | |
2384 | PRINT_NOTHING: Means we already printed all we needed to print, | |
2385 | don't print anything else. | |
2386 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
2387 | that something to be followed by a location. | |
2388 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
2389 | that something to be followed by a location. | |
2390 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
2391 | analysis. */ | |
c906108c | 2392 | |
917317f4 | 2393 | static enum print_stop_action |
fba45db2 | 2394 | print_it_typical (bpstat bs) |
c906108c | 2395 | { |
f7545552 | 2396 | struct cleanup *old_chain; |
4f8d1dc6 | 2397 | struct breakpoint *b; |
89f9893c | 2398 | const struct bp_location *bl; |
8b93c638 | 2399 | struct ui_stream *stb; |
f7545552 TT |
2400 | int bp_temp = 0; |
2401 | enum print_stop_action result; | |
2402 | ||
c906108c SS |
2403 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
2404 | which has since been deleted. */ | |
e514a9d6 | 2405 | if (bs->breakpoint_at == NULL) |
917317f4 | 2406 | return PRINT_UNKNOWN; |
0d381245 VP |
2407 | bl = bs->breakpoint_at; |
2408 | b = bl->owner; | |
c906108c | 2409 | |
f7545552 TT |
2410 | stb = ui_out_stream_new (uiout); |
2411 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
2412 | ||
4f8d1dc6 | 2413 | switch (b->type) |
c906108c | 2414 | { |
e514a9d6 JM |
2415 | case bp_breakpoint: |
2416 | case bp_hardware_breakpoint: | |
2cec12e5 | 2417 | bp_temp = bs->breakpoint_at->owner->disposition == disp_del; |
0d381245 VP |
2418 | if (bl->address != bl->requested_address) |
2419 | breakpoint_adjustment_warning (bl->requested_address, | |
2420 | bl->address, | |
4f8d1dc6 VP |
2421 | b->number, 1); |
2422 | annotate_breakpoint (b->number); | |
2cec12e5 AR |
2423 | if (bp_temp) |
2424 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
2425 | else | |
2426 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 2427 | if (ui_out_is_mi_like_p (uiout)) |
2cec12e5 AR |
2428 | { |
2429 | ui_out_field_string (uiout, "reason", | |
2430 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
2431 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
2432 | } | |
4f8d1dc6 | 2433 | ui_out_field_int (uiout, "bkptno", b->number); |
8b93c638 | 2434 | ui_out_text (uiout, ", "); |
f7545552 | 2435 | result = PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2436 | break; |
2437 | ||
2438 | case bp_shlib_event: | |
917317f4 JM |
2439 | /* Did we stop because the user set the stop_on_solib_events |
2440 | variable? (If so, we report this as a generic, "Stopped due | |
2441 | to shlib event" message.) */ | |
a3f17187 | 2442 | printf_filtered (_("Stopped due to shared library event\n")); |
f7545552 | 2443 | result = PRINT_NOTHING; |
e514a9d6 JM |
2444 | break; |
2445 | ||
c4093a6a JM |
2446 | case bp_thread_event: |
2447 | /* Not sure how we will get here. | |
2448 | GDB should not stop for these breakpoints. */ | |
a3f17187 | 2449 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 2450 | result = PRINT_NOTHING; |
c4093a6a JM |
2451 | break; |
2452 | ||
1900040c MS |
2453 | case bp_overlay_event: |
2454 | /* By analogy with the thread event, GDB should not stop for these. */ | |
a3f17187 | 2455 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
f7545552 | 2456 | result = PRINT_NOTHING; |
1900040c MS |
2457 | break; |
2458 | ||
0fd8e87f UW |
2459 | case bp_longjmp_master: |
2460 | /* These should never be enabled. */ | |
2461 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
2462 | result = PRINT_NOTHING; | |
2463 | break; | |
2464 | ||
e514a9d6 JM |
2465 | case bp_watchpoint: |
2466 | case bp_hardware_watchpoint: | |
fa4727a6 DJ |
2467 | annotate_watchpoint (b->number); |
2468 | if (ui_out_is_mi_like_p (uiout)) | |
2469 | ui_out_field_string | |
2470 | (uiout, "reason", | |
2471 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
2472 | mention (b); | |
f7545552 | 2473 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
fa4727a6 DJ |
2474 | ui_out_text (uiout, "\nOld value = "); |
2475 | watchpoint_value_print (bs->old_val, stb->stream); | |
2476 | ui_out_field_stream (uiout, "old", stb); | |
2477 | ui_out_text (uiout, "\nNew value = "); | |
2478 | watchpoint_value_print (b->val, stb->stream); | |
2479 | ui_out_field_stream (uiout, "new", stb); | |
fa4727a6 | 2480 | ui_out_text (uiout, "\n"); |
e514a9d6 | 2481 | /* More than one watchpoint may have been triggered. */ |
f7545552 | 2482 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
2483 | break; |
2484 | ||
2485 | case bp_read_watchpoint: | |
9dc5e2a9 | 2486 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2487 | ui_out_field_string |
2488 | (uiout, "reason", | |
2489 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 2490 | mention (b); |
f7545552 | 2491 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 2492 | ui_out_text (uiout, "\nValue = "); |
fa4727a6 | 2493 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 2494 | ui_out_field_stream (uiout, "value", stb); |
8b93c638 | 2495 | ui_out_text (uiout, "\n"); |
f7545552 | 2496 | result = PRINT_UNKNOWN; |
e514a9d6 JM |
2497 | break; |
2498 | ||
2499 | case bp_access_watchpoint: | |
fa4727a6 | 2500 | if (bs->old_val != NULL) |
8b93c638 | 2501 | { |
4f8d1dc6 | 2502 | annotate_watchpoint (b->number); |
9dc5e2a9 | 2503 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2504 | ui_out_field_string |
2505 | (uiout, "reason", | |
2506 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 2507 | mention (b); |
f7545552 | 2508 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 2509 | ui_out_text (uiout, "\nOld value = "); |
fa4727a6 | 2510 | watchpoint_value_print (bs->old_val, stb->stream); |
8b93c638 | 2511 | ui_out_field_stream (uiout, "old", stb); |
8b93c638 JM |
2512 | ui_out_text (uiout, "\nNew value = "); |
2513 | } | |
2514 | else | |
2515 | { | |
4f8d1dc6 | 2516 | mention (b); |
9dc5e2a9 | 2517 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2518 | ui_out_field_string |
2519 | (uiout, "reason", | |
2520 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
f7545552 | 2521 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2522 | ui_out_text (uiout, "\nValue = "); |
2523 | } | |
fa4727a6 | 2524 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 2525 | ui_out_field_stream (uiout, "new", stb); |
8b93c638 | 2526 | ui_out_text (uiout, "\n"); |
f7545552 | 2527 | result = PRINT_UNKNOWN; |
e514a9d6 | 2528 | break; |
4ce44c66 | 2529 | |
e514a9d6 JM |
2530 | /* Fall through, we don't deal with these types of breakpoints |
2531 | here. */ | |
2532 | ||
11cf8741 | 2533 | case bp_finish: |
9dc5e2a9 | 2534 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2535 | ui_out_field_string |
2536 | (uiout, "reason", | |
2537 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
f7545552 | 2538 | result = PRINT_UNKNOWN; |
8b93c638 JM |
2539 | break; |
2540 | ||
e514a9d6 | 2541 | case bp_until: |
9dc5e2a9 | 2542 | if (ui_out_is_mi_like_p (uiout)) |
1fbc2a49 NR |
2543 | ui_out_field_string |
2544 | (uiout, "reason", | |
2545 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
f7545552 | 2546 | result = PRINT_UNKNOWN; |
8b93c638 JM |
2547 | break; |
2548 | ||
c2d11a7d | 2549 | case bp_none: |
e514a9d6 JM |
2550 | case bp_longjmp: |
2551 | case bp_longjmp_resume: | |
2552 | case bp_step_resume: | |
e514a9d6 JM |
2553 | case bp_watchpoint_scope: |
2554 | case bp_call_dummy: | |
1042e4c0 | 2555 | case bp_tracepoint: |
e514a9d6 | 2556 | default: |
f7545552 TT |
2557 | result = PRINT_UNKNOWN; |
2558 | break; | |
e514a9d6 | 2559 | } |
f7545552 TT |
2560 | |
2561 | do_cleanups (old_chain); | |
2562 | return result; | |
e514a9d6 JM |
2563 | } |
2564 | ||
2565 | /* Generic routine for printing messages indicating why we | |
2566 | stopped. The behavior of this function depends on the value | |
2567 | 'print_it' in the bpstat structure. Under some circumstances we | |
2568 | may decide not to print anything here and delegate the task to | |
2569 | normal_stop(). */ | |
2570 | ||
2571 | static enum print_stop_action | |
2572 | print_bp_stop_message (bpstat bs) | |
2573 | { | |
2574 | switch (bs->print_it) | |
2575 | { | |
2576 | case print_it_noop: | |
2577 | /* Nothing should be printed for this bpstat entry. */ | |
2578 | return PRINT_UNKNOWN; | |
2579 | break; | |
2580 | ||
2581 | case print_it_done: | |
2582 | /* We still want to print the frame, but we already printed the | |
2583 | relevant messages. */ | |
2584 | return PRINT_SRC_AND_LOC; | |
2585 | break; | |
2586 | ||
2587 | case print_it_normal: | |
4f8d1dc6 | 2588 | { |
89f9893c | 2589 | const struct bp_location *bl = bs->breakpoint_at; |
4f8d1dc6 VP |
2590 | struct breakpoint *b = bl ? bl->owner : NULL; |
2591 | ||
2592 | /* Normal case. Call the breakpoint's print_it method, or | |
2593 | print_it_typical. */ | |
2594 | /* FIXME: how breakpoint can ever be NULL here? */ | |
2595 | if (b != NULL && b->ops != NULL && b->ops->print_it != NULL) | |
2596 | return b->ops->print_it (b); | |
2597 | else | |
2598 | return print_it_typical (bs); | |
2599 | } | |
2600 | break; | |
3086aeae | 2601 | |
e514a9d6 | 2602 | default: |
8e65ff28 | 2603 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2604 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 2605 | break; |
c906108c | 2606 | } |
c906108c SS |
2607 | } |
2608 | ||
e514a9d6 JM |
2609 | /* Print a message indicating what happened. This is called from |
2610 | normal_stop(). The input to this routine is the head of the bpstat | |
2611 | list - a list of the eventpoints that caused this stop. This | |
2612 | routine calls the generic print routine for printing a message | |
2613 | about reasons for stopping. This will print (for example) the | |
2614 | "Breakpoint n," part of the output. The return value of this | |
2615 | routine is one of: | |
c906108c | 2616 | |
917317f4 JM |
2617 | PRINT_UNKNOWN: Means we printed nothing |
2618 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2619 | code to print the location. An example is |
2620 | "Breakpoint 1, " which should be followed by | |
2621 | the location. | |
917317f4 | 2622 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2623 | to also print the location part of the message. |
2624 | An example is the catch/throw messages, which | |
917317f4 JM |
2625 | don't require a location appended to the end. |
2626 | PRINT_NOTHING: We have done some printing and we don't need any | |
2627 | further info to be printed.*/ | |
c906108c | 2628 | |
917317f4 | 2629 | enum print_stop_action |
fba45db2 | 2630 | bpstat_print (bpstat bs) |
c906108c SS |
2631 | { |
2632 | int val; | |
c5aa993b | 2633 | |
c906108c | 2634 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2635 | (Currently all watchpoints go on the bpstat whether hit or not. |
2636 | That probably could (should) be changed, provided care is taken | |
c906108c | 2637 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2638 | for (; bs; bs = bs->next) |
2639 | { | |
2640 | val = print_bp_stop_message (bs); | |
2641 | if (val == PRINT_SRC_ONLY | |
2642 | || val == PRINT_SRC_AND_LOC | |
2643 | || val == PRINT_NOTHING) | |
2644 | return val; | |
2645 | } | |
c906108c | 2646 | |
e514a9d6 JM |
2647 | /* We reached the end of the chain, or we got a null BS to start |
2648 | with and nothing was printed. */ | |
917317f4 | 2649 | return PRINT_UNKNOWN; |
c906108c SS |
2650 | } |
2651 | ||
2652 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2653 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2654 | The argument is a "struct expression *" that has been cast to char * to | |
2655 | make it pass through catch_errors. */ | |
2656 | ||
2657 | static int | |
4efb68b1 | 2658 | breakpoint_cond_eval (void *exp) |
c906108c | 2659 | { |
278cd55f | 2660 | struct value *mark = value_mark (); |
c5aa993b | 2661 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2662 | value_free_to_mark (mark); |
2663 | return i; | |
2664 | } | |
2665 | ||
2666 | /* Allocate a new bpstat and chain it to the current one. */ | |
2667 | ||
2668 | static bpstat | |
89f9893c | 2669 | bpstat_alloc (const struct bp_location *bl, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
2670 | { |
2671 | bpstat bs; | |
2672 | ||
2673 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2674 | cbs->next = bs; | |
4f8d1dc6 | 2675 | bs->breakpoint_at = bl; |
c906108c SS |
2676 | /* If the condition is false, etc., don't do the commands. */ |
2677 | bs->commands = NULL; | |
2678 | bs->old_val = NULL; | |
2679 | bs->print_it = print_it_normal; | |
2680 | return bs; | |
2681 | } | |
2682 | \f | |
d983da9c DJ |
2683 | /* The target has stopped with waitstatus WS. Check if any hardware |
2684 | watchpoints have triggered, according to the target. */ | |
2685 | ||
2686 | int | |
2687 | watchpoints_triggered (struct target_waitstatus *ws) | |
2688 | { | |
d92524f1 | 2689 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
2690 | CORE_ADDR addr; |
2691 | struct breakpoint *b; | |
2692 | ||
2693 | if (!stopped_by_watchpoint) | |
2694 | { | |
2695 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
2696 | as not triggered. */ | |
2697 | ALL_BREAKPOINTS (b) | |
2698 | if (b->type == bp_hardware_watchpoint | |
2699 | || b->type == bp_read_watchpoint | |
2700 | || b->type == bp_access_watchpoint) | |
2701 | b->watchpoint_triggered = watch_triggered_no; | |
2702 | ||
2703 | return 0; | |
2704 | } | |
2705 | ||
2706 | if (!target_stopped_data_address (¤t_target, &addr)) | |
2707 | { | |
2708 | /* We were stopped by a watchpoint, but we don't know where. | |
2709 | Mark all watchpoints as unknown. */ | |
2710 | ALL_BREAKPOINTS (b) | |
2711 | if (b->type == bp_hardware_watchpoint | |
2712 | || b->type == bp_read_watchpoint | |
2713 | || b->type == bp_access_watchpoint) | |
2714 | b->watchpoint_triggered = watch_triggered_unknown; | |
2715 | ||
2716 | return stopped_by_watchpoint; | |
2717 | } | |
2718 | ||
2719 | /* The target could report the data address. Mark watchpoints | |
2720 | affected by this data address as triggered, and all others as not | |
2721 | triggered. */ | |
2722 | ||
2723 | ALL_BREAKPOINTS (b) | |
2724 | if (b->type == bp_hardware_watchpoint | |
2725 | || b->type == bp_read_watchpoint | |
2726 | || b->type == bp_access_watchpoint) | |
2727 | { | |
a5606eee | 2728 | struct bp_location *loc; |
d983da9c DJ |
2729 | struct value *v; |
2730 | ||
2731 | b->watchpoint_triggered = watch_triggered_no; | |
a5606eee VP |
2732 | for (loc = b->loc; loc; loc = loc->next) |
2733 | /* Exact match not required. Within range is | |
2734 | sufficient. */ | |
5009afc5 AS |
2735 | if (target_watchpoint_addr_within_range (¤t_target, |
2736 | addr, loc->address, | |
2737 | loc->length)) | |
a5606eee VP |
2738 | { |
2739 | b->watchpoint_triggered = watch_triggered_yes; | |
2740 | break; | |
2741 | } | |
d983da9c DJ |
2742 | } |
2743 | ||
2744 | return 1; | |
2745 | } | |
2746 | ||
c906108c SS |
2747 | /* Possible return values for watchpoint_check (this can't be an enum |
2748 | because of check_errors). */ | |
2749 | /* The watchpoint has been deleted. */ | |
2750 | #define WP_DELETED 1 | |
2751 | /* The value has changed. */ | |
2752 | #define WP_VALUE_CHANGED 2 | |
2753 | /* The value has not changed. */ | |
2754 | #define WP_VALUE_NOT_CHANGED 3 | |
2755 | ||
2756 | #define BP_TEMPFLAG 1 | |
2757 | #define BP_HARDWAREFLAG 2 | |
2758 | ||
2759 | /* Check watchpoint condition. */ | |
2760 | ||
2761 | static int | |
4efb68b1 | 2762 | watchpoint_check (void *p) |
c906108c SS |
2763 | { |
2764 | bpstat bs = (bpstat) p; | |
2765 | struct breakpoint *b; | |
2766 | struct frame_info *fr; | |
2767 | int within_current_scope; | |
2768 | ||
4f8d1dc6 | 2769 | b = bs->breakpoint_at->owner; |
c906108c SS |
2770 | |
2771 | if (b->exp_valid_block == NULL) | |
2772 | within_current_scope = 1; | |
2773 | else | |
2774 | { | |
edb3359d DJ |
2775 | struct frame_info *frame = get_current_frame (); |
2776 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
2777 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
2778 | ||
101dcfbe | 2779 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 2780 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
2781 | |
2782 | /* If we've gotten confused in the unwinder, we might have | |
2783 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
2784 | if (within_current_scope) |
2785 | { | |
2786 | struct symbol *function; | |
2787 | ||
2788 | function = get_frame_function (fr); | |
2789 | if (function == NULL | |
2790 | || !contained_in (b->exp_valid_block, | |
2791 | SYMBOL_BLOCK_VALUE (function))) | |
2792 | within_current_scope = 0; | |
2793 | } | |
69fbadd5 | 2794 | |
c12260ac CV |
2795 | /* in_function_epilogue_p() returns a non-zero value if we're still |
2796 | in the function but the stack frame has already been invalidated. | |
2797 | Since we can't rely on the values of local variables after the | |
2798 | stack has been destroyed, we are treating the watchpoint in that | |
edb3359d DJ |
2799 | state as `not changed' without further checking. Don't mark |
2800 | watchpoints as changed if the current frame is in an epilogue - | |
2801 | even if they are in some other frame, our view of the stack | |
2802 | is likely to be wrong. */ | |
2803 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) | |
2804 | return WP_VALUE_NOT_CHANGED; | |
fb14de7b | 2805 | |
edb3359d | 2806 | if (within_current_scope) |
c906108c SS |
2807 | /* If we end up stopping, the current frame will get selected |
2808 | in normal_stop. So this call to select_frame won't affect | |
2809 | the user. */ | |
0f7d239c | 2810 | select_frame (fr); |
c906108c | 2811 | } |
c5aa993b | 2812 | |
c906108c SS |
2813 | if (within_current_scope) |
2814 | { | |
2815 | /* We use value_{,free_to_}mark because it could be a | |
2816 | *long* time before we return to the command level and | |
c5aa993b JM |
2817 | call free_all_values. We can't call free_all_values because |
2818 | we might be in the middle of evaluating a function call. */ | |
c906108c | 2819 | |
278cd55f | 2820 | struct value *mark = value_mark (); |
fa4727a6 DJ |
2821 | struct value *new_val; |
2822 | ||
2823 | fetch_watchpoint_value (b->exp, &new_val, NULL, NULL); | |
2824 | if ((b->val != NULL) != (new_val != NULL) | |
2825 | || (b->val != NULL && !value_equal (b->val, new_val))) | |
c906108c | 2826 | { |
fa4727a6 DJ |
2827 | if (new_val != NULL) |
2828 | { | |
2829 | release_value (new_val); | |
2830 | value_free_to_mark (mark); | |
2831 | } | |
c906108c SS |
2832 | bs->old_val = b->val; |
2833 | b->val = new_val; | |
fa4727a6 | 2834 | b->val_valid = 1; |
c906108c SS |
2835 | /* We will stop here */ |
2836 | return WP_VALUE_CHANGED; | |
2837 | } | |
2838 | else | |
2839 | { | |
2840 | /* Nothing changed, don't do anything. */ | |
2841 | value_free_to_mark (mark); | |
2842 | /* We won't stop here */ | |
2843 | return WP_VALUE_NOT_CHANGED; | |
2844 | } | |
2845 | } | |
2846 | else | |
2847 | { | |
2848 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2849 | if we temporarily ignored the watchpoint, then when |
2850 | we reenter the block in which it is valid it contains | |
2851 | garbage (in the case of a function, it may have two | |
2852 | garbage values, one before and one after the prologue). | |
2853 | So we can't even detect the first assignment to it and | |
2854 | watch after that (since the garbage may or may not equal | |
2855 | the first value assigned). */ | |
4ce44c66 JM |
2856 | /* We print all the stop information in print_it_typical(), but |
2857 | in this case, by the time we call print_it_typical() this bp | |
2858 | will be deleted already. So we have no choice but print the | |
2859 | information here. */ | |
9dc5e2a9 | 2860 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2861 | ui_out_field_string |
2862 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 2863 | ui_out_text (uiout, "\nWatchpoint "); |
4f8d1dc6 | 2864 | ui_out_field_int (uiout, "wpnum", b->number); |
8b93c638 JM |
2865 | ui_out_text (uiout, " deleted because the program has left the block in\n\ |
2866 | which its expression is valid.\n"); | |
4ce44c66 | 2867 | |
c906108c | 2868 | if (b->related_breakpoint) |
b5de0fa7 EZ |
2869 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2870 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
2871 | |
2872 | return WP_DELETED; | |
2873 | } | |
2874 | } | |
2875 | ||
18a18393 VP |
2876 | /* Return true if it looks like target has stopped due to hitting |
2877 | breakpoint location BL. This function does not check if we | |
2878 | should stop, only if BL explains the stop. */ | |
2879 | static int | |
2880 | bpstat_check_location (const struct bp_location *bl, CORE_ADDR bp_addr) | |
2881 | { | |
2882 | struct breakpoint *b = bl->owner; | |
2883 | ||
2884 | if (b->type != bp_watchpoint | |
2885 | && b->type != bp_hardware_watchpoint | |
2886 | && b->type != bp_read_watchpoint | |
2887 | && b->type != bp_access_watchpoint | |
2888 | && b->type != bp_hardware_breakpoint | |
fe798b75 | 2889 | && b->type != bp_catchpoint) /* a non-watchpoint bp */ |
18a18393 VP |
2890 | { |
2891 | if (bl->address != bp_addr) /* address doesn't match */ | |
2892 | return 0; | |
2893 | if (overlay_debugging /* unmapped overlay section */ | |
2894 | && section_is_overlay (bl->section) | |
2895 | && !section_is_mapped (bl->section)) | |
2896 | return 0; | |
2897 | } | |
2898 | ||
2899 | /* Continuable hardware watchpoints are treated as non-existent if the | |
2900 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
2901 | some data address). Otherwise gdb won't stop on a break instruction | |
2902 | in the code (not from a breakpoint) when a hardware watchpoint has | |
2903 | been defined. Also skip watchpoints which we know did not trigger | |
2904 | (did not match the data address). */ | |
2905 | ||
2906 | if ((b->type == bp_hardware_watchpoint | |
2907 | || b->type == bp_read_watchpoint | |
2908 | || b->type == bp_access_watchpoint) | |
2909 | && b->watchpoint_triggered == watch_triggered_no) | |
2910 | return 0; | |
2911 | ||
2912 | if (b->type == bp_hardware_breakpoint) | |
2913 | { | |
2914 | if (bl->address != bp_addr) | |
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 | } | |
ce78b96d | 2921 | |
ce78b96d JB |
2922 | if (b->type == bp_catchpoint) |
2923 | { | |
2924 | gdb_assert (b->ops != NULL && b->ops->breakpoint_hit != NULL); | |
2925 | if (!b->ops->breakpoint_hit (b)) | |
2926 | return 0; | |
2927 | } | |
2928 | ||
18a18393 VP |
2929 | return 1; |
2930 | } | |
2931 | ||
2932 | /* If BS refers to a watchpoint, determine if the watched values | |
2933 | has actually changed, and we should stop. If not, set BS->stop | |
2934 | to 0. */ | |
2935 | static void | |
2936 | bpstat_check_watchpoint (bpstat bs) | |
2937 | { | |
2938 | const struct bp_location *bl = bs->breakpoint_at; | |
2939 | struct breakpoint *b = bl->owner; | |
2940 | ||
2941 | if (b->type == bp_watchpoint | |
2942 | || b->type == bp_read_watchpoint | |
2943 | || b->type == bp_access_watchpoint | |
2944 | || b->type == bp_hardware_watchpoint) | |
2945 | { | |
2946 | CORE_ADDR addr; | |
2947 | struct value *v; | |
2948 | int must_check_value = 0; | |
2949 | ||
2950 | if (b->type == bp_watchpoint) | |
2951 | /* For a software watchpoint, we must always check the | |
2952 | watched value. */ | |
2953 | must_check_value = 1; | |
2954 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
2955 | /* We have a hardware watchpoint (read, write, or access) | |
2956 | and the target earlier reported an address watched by | |
2957 | this watchpoint. */ | |
2958 | must_check_value = 1; | |
2959 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
2960 | && b->type == bp_hardware_watchpoint) | |
2961 | /* We were stopped by a hardware watchpoint, but the target could | |
2962 | not report the data address. We must check the watchpoint's | |
2963 | value. Access and read watchpoints are out of luck; without | |
2964 | a data address, we can't figure it out. */ | |
2965 | must_check_value = 1; | |
2966 | ||
2967 | if (must_check_value) | |
2968 | { | |
2969 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
2970 | b->number); | |
2971 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2972 | int e = catch_errors (watchpoint_check, bs, message, | |
2973 | RETURN_MASK_ALL); | |
2974 | do_cleanups (cleanups); | |
2975 | switch (e) | |
2976 | { | |
2977 | case WP_DELETED: | |
2978 | /* We've already printed what needs to be printed. */ | |
2979 | bs->print_it = print_it_done; | |
2980 | /* Stop. */ | |
2981 | break; | |
2982 | case WP_VALUE_CHANGED: | |
2983 | if (b->type == bp_read_watchpoint) | |
2984 | { | |
2985 | /* Don't stop: read watchpoints shouldn't fire if | |
2986 | the value has changed. This is for targets | |
2987 | which cannot set read-only watchpoints. */ | |
2988 | bs->print_it = print_it_noop; | |
2989 | bs->stop = 0; | |
2990 | } | |
2991 | break; | |
2992 | case WP_VALUE_NOT_CHANGED: | |
2993 | if (b->type == bp_hardware_watchpoint | |
2994 | || b->type == bp_watchpoint) | |
2995 | { | |
2996 | /* Don't stop: write watchpoints shouldn't fire if | |
2997 | the value hasn't changed. */ | |
2998 | bs->print_it = print_it_noop; | |
2999 | bs->stop = 0; | |
3000 | } | |
3001 | /* Stop. */ | |
3002 | break; | |
3003 | default: | |
3004 | /* Can't happen. */ | |
3005 | case 0: | |
3006 | /* Error from catch_errors. */ | |
3007 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); | |
3008 | if (b->related_breakpoint) | |
3009 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
3010 | b->disposition = disp_del_at_next_stop; | |
3011 | /* We've already printed what needs to be printed. */ | |
3012 | bs->print_it = print_it_done; | |
3013 | break; | |
3014 | } | |
3015 | } | |
3016 | else /* must_check_value == 0 */ | |
3017 | { | |
3018 | /* This is a case where some watchpoint(s) triggered, but | |
3019 | not at the address of this watchpoint, or else no | |
3020 | watchpoint triggered after all. So don't print | |
3021 | anything for this watchpoint. */ | |
3022 | bs->print_it = print_it_noop; | |
3023 | bs->stop = 0; | |
3024 | } | |
3025 | } | |
3026 | } | |
3027 | ||
3028 | ||
3029 | /* Check conditions (condition proper, frame, thread and ignore count) | |
3030 | of breakpoint referred to by BS. If we should not stop for this | |
3031 | breakpoint, set BS->stop to 0. */ | |
3032 | static void | |
3033 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
3034 | { | |
3035 | int thread_id = pid_to_thread_id (ptid); | |
3036 | const struct bp_location *bl = bs->breakpoint_at; | |
3037 | struct breakpoint *b = bl->owner; | |
3038 | ||
3039 | if (frame_id_p (b->frame_id) | |
edb3359d | 3040 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 VP |
3041 | bs->stop = 0; |
3042 | else if (bs->stop) | |
3043 | { | |
3044 | int value_is_zero = 0; | |
3045 | ||
3046 | /* If this is a scope breakpoint, mark the associated | |
3047 | watchpoint as triggered so that we will handle the | |
3048 | out-of-scope event. We'll get to the watchpoint next | |
3049 | iteration. */ | |
3050 | if (b->type == bp_watchpoint_scope) | |
3051 | b->related_breakpoint->watchpoint_triggered = watch_triggered_yes; | |
3052 | ||
3053 | if (bl->cond && bl->owner->disposition != disp_del_at_next_stop) | |
3054 | { | |
c5bc3a77 DJ |
3055 | /* We use value_mark and value_free_to_mark because it could |
3056 | be a long time before we return to the command level and | |
3057 | call free_all_values. We can't call free_all_values | |
3058 | because we might be in the middle of evaluating a | |
3059 | function call. */ | |
3060 | struct value *mark = value_mark (); | |
3061 | ||
edb3359d DJ |
3062 | /* Need to select the frame, with all that implies so that |
3063 | the conditions will have the right context. Because we | |
3064 | use the frame, we will not see an inlined function's | |
3065 | variables when we arrive at a breakpoint at the start | |
3066 | of the inlined function; the current frame will be the | |
3067 | call site. */ | |
18a18393 VP |
3068 | select_frame (get_current_frame ()); |
3069 | value_is_zero | |
3070 | = catch_errors (breakpoint_cond_eval, (bl->cond), | |
3071 | "Error in testing breakpoint condition:\n", | |
3072 | RETURN_MASK_ALL); | |
3073 | /* FIXME-someday, should give breakpoint # */ | |
c5bc3a77 | 3074 | value_free_to_mark (mark); |
18a18393 VP |
3075 | } |
3076 | if (bl->cond && value_is_zero) | |
3077 | { | |
3078 | bs->stop = 0; | |
3079 | } | |
3080 | else if (b->thread != -1 && b->thread != thread_id) | |
3081 | { | |
3082 | bs->stop = 0; | |
3083 | } | |
3084 | else if (b->ignore_count > 0) | |
3085 | { | |
3086 | b->ignore_count--; | |
3087 | annotate_ignore_count_change (); | |
3088 | bs->stop = 0; | |
3089 | /* Increase the hit count even though we don't | |
3090 | stop. */ | |
3091 | ++(b->hit_count); | |
3092 | } | |
3093 | } | |
3094 | } | |
3095 | ||
3096 | ||
9709f61c | 3097 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 3098 | BP_ADDR in thread PTID. |
c906108c | 3099 | |
d983da9c | 3100 | Determine whether we stopped at a breakpoint, etc, or whether we |
c906108c SS |
3101 | don't understand this stop. Result is a chain of bpstat's such that: |
3102 | ||
c5aa993b | 3103 | if we don't understand the stop, the result is a null pointer. |
c906108c | 3104 | |
c5aa993b | 3105 | if we understand why we stopped, the result is not null. |
c906108c | 3106 | |
c5aa993b JM |
3107 | Each element of the chain refers to a particular breakpoint or |
3108 | watchpoint at which we have stopped. (We may have stopped for | |
3109 | several reasons concurrently.) | |
c906108c | 3110 | |
c5aa993b JM |
3111 | Each element of the chain has valid next, breakpoint_at, |
3112 | commands, FIXME??? fields. */ | |
c906108c SS |
3113 | |
3114 | bpstat | |
d983da9c | 3115 | bpstat_stop_status (CORE_ADDR bp_addr, ptid_t ptid) |
c906108c | 3116 | { |
0d381245 | 3117 | struct breakpoint *b = NULL; |
89f9893c | 3118 | const struct bp_location *bl; |
20874c92 | 3119 | struct bp_location *loc; |
c906108c SS |
3120 | /* Root of the chain of bpstat's */ |
3121 | struct bpstats root_bs[1]; | |
3122 | /* Pointer to the last thing in the chain currently. */ | |
3123 | bpstat bs = root_bs; | |
20874c92 | 3124 | int ix; |
d832cb68 | 3125 | int need_remove_insert; |
c906108c | 3126 | |
0d381245 | 3127 | ALL_BP_LOCATIONS (bl) |
c5aa993b | 3128 | { |
0d381245 VP |
3129 | b = bl->owner; |
3130 | gdb_assert (b); | |
468d015d | 3131 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) |
c5aa993b JM |
3132 | continue; |
3133 | ||
a5606eee VP |
3134 | /* For hardware watchpoints, we look only at the first location. |
3135 | The watchpoint_check function will work on entire expression, | |
3136 | not the individual locations. For read watchopints, the | |
3137 | watchpoints_triggered function have checked all locations | |
3138 | alrea | |
3139 | */ | |
3140 | if (b->type == bp_hardware_watchpoint && bl != b->loc) | |
3141 | continue; | |
3142 | ||
18a18393 VP |
3143 | if (!bpstat_check_location (bl, bp_addr)) |
3144 | continue; | |
3145 | ||
c5aa993b JM |
3146 | /* Come here if it's a watchpoint, or if the break address matches */ |
3147 | ||
0d381245 | 3148 | bs = bpstat_alloc (bl, bs); /* Alloc a bpstat to explain stop */ |
c5aa993b | 3149 | |
18a18393 VP |
3150 | /* Assume we stop. Should we find watchpoint that is not actually |
3151 | triggered, or if condition of breakpoint is false, we'll reset | |
3152 | 'stop' to 0. */ | |
c5aa993b JM |
3153 | bs->stop = 1; |
3154 | bs->print = 1; | |
3155 | ||
18a18393 VP |
3156 | bpstat_check_watchpoint (bs); |
3157 | if (!bs->stop) | |
3158 | continue; | |
c5aa993b | 3159 | |
0fd8e87f UW |
3160 | if (b->type == bp_thread_event || b->type == bp_overlay_event |
3161 | || b->type == bp_longjmp_master) | |
18a18393 | 3162 | /* We do not stop for these. */ |
c5aa993b JM |
3163 | bs->stop = 0; |
3164 | else | |
18a18393 VP |
3165 | bpstat_check_breakpoint_conditions (bs, ptid); |
3166 | ||
3167 | if (bs->stop) | |
c5aa993b | 3168 | { |
18a18393 | 3169 | ++(b->hit_count); |
d983da9c | 3170 | |
18a18393 VP |
3171 | /* We will stop here */ |
3172 | if (b->disposition == disp_disable) | |
c5aa993b | 3173 | { |
514f746b AR |
3174 | if (b->enable_state != bp_permanent) |
3175 | b->enable_state = bp_disabled; | |
b60e7edf | 3176 | update_global_location_list (0); |
c5aa993b | 3177 | } |
18a18393 VP |
3178 | if (b->silent) |
3179 | bs->print = 0; | |
3180 | bs->commands = b->commands; | |
059fb39f PM |
3181 | if (bs->commands |
3182 | && (strcmp ("silent", bs->commands->line) == 0 | |
3183 | || (xdb_commands && strcmp ("Q", bs->commands->line) == 0))) | |
c5aa993b | 3184 | { |
18a18393 VP |
3185 | bs->commands = bs->commands->next; |
3186 | bs->print = 0; | |
c5aa993b | 3187 | } |
18a18393 | 3188 | bs->commands = copy_command_lines (bs->commands); |
c5aa993b | 3189 | } |
18a18393 | 3190 | |
c5aa993b JM |
3191 | /* Print nothing for this entry if we dont stop or if we dont print. */ |
3192 | if (bs->stop == 0 || bs->print == 0) | |
3193 | bs->print_it = print_it_noop; | |
3194 | } | |
c906108c | 3195 | |
20874c92 VP |
3196 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) |
3197 | { | |
3198 | if (loc->address == bp_addr) | |
3199 | { | |
3200 | bs = bpstat_alloc (loc, bs); | |
3201 | /* For hits of moribund locations, we should just proceed. */ | |
3202 | bs->stop = 0; | |
3203 | bs->print = 0; | |
3204 | bs->print_it = print_it_noop; | |
3205 | } | |
3206 | } | |
3207 | ||
c906108c SS |
3208 | bs->next = NULL; /* Terminate the chain */ |
3209 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
3210 | ||
d983da9c DJ |
3211 | /* If we aren't stopping, the value of some hardware watchpoint may |
3212 | not have changed, but the intermediate memory locations we are | |
3213 | watching may have. Don't bother if we're stopping; this will get | |
3214 | done later. */ | |
3215 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3216 | if (bs->stop) | |
3217 | break; | |
3218 | ||
d832cb68 | 3219 | need_remove_insert = 0; |
d983da9c DJ |
3220 | if (bs == NULL) |
3221 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3222 | if (!bs->stop | |
20874c92 | 3223 | && bs->breakpoint_at->owner |
d983da9c DJ |
3224 | && (bs->breakpoint_at->owner->type == bp_hardware_watchpoint |
3225 | || bs->breakpoint_at->owner->type == bp_read_watchpoint | |
3226 | || bs->breakpoint_at->owner->type == bp_access_watchpoint)) | |
3227 | { | |
a5606eee VP |
3228 | /* remove/insert can invalidate bs->breakpoint_at, if this |
3229 | location is no longer used by the watchpoint. Prevent | |
3230 | further code from trying to use it. */ | |
3231 | bs->breakpoint_at = NULL; | |
d832cb68 | 3232 | need_remove_insert = 1; |
d983da9c DJ |
3233 | } |
3234 | ||
d832cb68 DD |
3235 | if (need_remove_insert) |
3236 | { | |
3237 | remove_breakpoints (); | |
3238 | insert_breakpoints (); | |
3239 | } | |
3240 | ||
d983da9c | 3241 | return root_bs->next; |
c906108c SS |
3242 | } |
3243 | \f | |
3244 | /* Tell what to do about this bpstat. */ | |
3245 | struct bpstat_what | |
fba45db2 | 3246 | bpstat_what (bpstat bs) |
c906108c SS |
3247 | { |
3248 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
3249 | enum class |
3250 | { | |
3251 | /* This bpstat element has no effect on the main_action. */ | |
3252 | no_effect = 0, | |
3253 | ||
3254 | /* There was a watchpoint, stop but don't print. */ | |
3255 | wp_silent, | |
c906108c | 3256 | |
c5aa993b JM |
3257 | /* There was a watchpoint, stop and print. */ |
3258 | wp_noisy, | |
c906108c | 3259 | |
c5aa993b JM |
3260 | /* There was a breakpoint but we're not stopping. */ |
3261 | bp_nostop, | |
c906108c | 3262 | |
c5aa993b JM |
3263 | /* There was a breakpoint, stop but don't print. */ |
3264 | bp_silent, | |
c906108c | 3265 | |
c5aa993b JM |
3266 | /* There was a breakpoint, stop and print. */ |
3267 | bp_noisy, | |
c906108c | 3268 | |
c5aa993b JM |
3269 | /* We hit the longjmp breakpoint. */ |
3270 | long_jump, | |
c906108c | 3271 | |
c5aa993b JM |
3272 | /* We hit the longjmp_resume breakpoint. */ |
3273 | long_resume, | |
c906108c | 3274 | |
c5aa993b JM |
3275 | /* We hit the step_resume breakpoint. */ |
3276 | step_resume, | |
c906108c | 3277 | |
c5aa993b JM |
3278 | /* We hit the shared library event breakpoint. */ |
3279 | shlib_event, | |
c906108c | 3280 | |
c5aa993b JM |
3281 | /* This is just used to count how many enums there are. */ |
3282 | class_last | |
c906108c SS |
3283 | }; |
3284 | ||
3285 | /* Here is the table which drives this routine. So that we can | |
3286 | format it pretty, we define some abbreviations for the | |
3287 | enum bpstat_what codes. */ | |
3288 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
3289 | #define ss BPSTAT_WHAT_STOP_SILENT | |
3290 | #define sn BPSTAT_WHAT_STOP_NOISY | |
3291 | #define sgl BPSTAT_WHAT_SINGLE | |
3292 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
3293 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
c906108c | 3294 | #define sr BPSTAT_WHAT_STEP_RESUME |
c906108c | 3295 | #define shl BPSTAT_WHAT_CHECK_SHLIBS |
c906108c SS |
3296 | |
3297 | /* "Can't happen." Might want to print an error message. | |
3298 | abort() is not out of the question, but chances are GDB is just | |
3299 | a bit confused, not unusable. */ | |
3300 | #define err BPSTAT_WHAT_STOP_NOISY | |
3301 | ||
3302 | /* Given an old action and a class, come up with a new action. */ | |
3303 | /* One interesting property of this table is that wp_silent is the same | |
3304 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
3305 | after stopping, the check for whether to step over a breakpoint | |
3306 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
3307 | reference to how we stopped. We retain separate wp_silent and |
3308 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
3309 | |
3310 | Another possibly interesting property of this table is that | |
3311 | there's a partial ordering, priority-like, of the actions. Once | |
3312 | you've decided that some action is appropriate, you'll never go | |
3313 | back and decide something of a lower priority is better. The | |
3314 | ordering is: | |
3315 | ||
d81191fc JB |
3316 | kc < clr sgl shl slr sn sr ss |
3317 | sgl < shl slr sn sr ss | |
3318 | slr < err shl sn sr ss | |
3319 | clr < err shl sn sr ss | |
3320 | ss < shl sn sr | |
3321 | sn < shl sr | |
3322 | shl < sr | |
4d5b2cd7 | 3323 | sr < |
c5aa993b | 3324 | |
43ff13b4 JM |
3325 | What I think this means is that we don't need a damned table |
3326 | here. If you just put the rows and columns in the right order, | |
3327 | it'd look awfully regular. We could simply walk the bpstat list | |
3328 | and choose the highest priority action we find, with a little | |
78b6a731 | 3329 | logic to handle the 'err' cases. */ |
c906108c SS |
3330 | |
3331 | /* step_resume entries: a step resume breakpoint overrides another | |
3332 | breakpoint of signal handling (see comment in wait_for_inferior | |
fcf70625 | 3333 | at where we set the step_resume breakpoint). */ |
c906108c SS |
3334 | |
3335 | static const enum bpstat_what_main_action | |
c5aa993b JM |
3336 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
3337 | { | |
3338 | /* old action */ | |
d81191fc | 3339 | /* kc ss sn sgl slr clr sr shl |
c5aa993b JM |
3340 | */ |
3341 | /*no_effect */ | |
d81191fc | 3342 | {kc, ss, sn, sgl, slr, clr, sr, shl}, |
c5aa993b | 3343 | /*wp_silent */ |
d81191fc | 3344 | {ss, ss, sn, ss, ss, ss, sr, shl}, |
c5aa993b | 3345 | /*wp_noisy */ |
d81191fc | 3346 | {sn, sn, sn, sn, sn, sn, sr, shl}, |
c5aa993b | 3347 | /*bp_nostop */ |
d81191fc | 3348 | {sgl, ss, sn, sgl, slr, slr, sr, shl}, |
c5aa993b | 3349 | /*bp_silent */ |
d81191fc | 3350 | {ss, ss, sn, ss, ss, ss, sr, shl}, |
c5aa993b | 3351 | /*bp_noisy */ |
d81191fc | 3352 | {sn, sn, sn, sn, sn, sn, sr, shl}, |
c5aa993b | 3353 | /*long_jump */ |
d81191fc | 3354 | {slr, ss, sn, slr, slr, err, sr, shl}, |
c5aa993b | 3355 | /*long_resume */ |
d81191fc | 3356 | {clr, ss, sn, err, err, err, sr, shl}, |
c5aa993b | 3357 | /*step_resume */ |
d81191fc | 3358 | {sr, sr, sr, sr, sr, sr, sr, sr}, |
c5aa993b | 3359 | /*shlib */ |
d81191fc | 3360 | {shl, shl, shl, shl, shl, shl, sr, shl} |
c5aa993b | 3361 | }; |
c906108c SS |
3362 | |
3363 | #undef kc | |
3364 | #undef ss | |
3365 | #undef sn | |
3366 | #undef sgl | |
3367 | #undef slr | |
3368 | #undef clr | |
c906108c SS |
3369 | #undef err |
3370 | #undef sr | |
3371 | #undef ts | |
3372 | #undef shl | |
c906108c SS |
3373 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; |
3374 | struct bpstat_what retval; | |
3375 | ||
3376 | retval.call_dummy = 0; | |
3377 | for (; bs != NULL; bs = bs->next) | |
3378 | { | |
3379 | enum class bs_class = no_effect; | |
3380 | if (bs->breakpoint_at == NULL) | |
3381 | /* I suspect this can happen if it was a momentary breakpoint | |
3382 | which has since been deleted. */ | |
3383 | continue; | |
20874c92 VP |
3384 | if (bs->breakpoint_at->owner == NULL) |
3385 | bs_class = bp_nostop; | |
3386 | else | |
4f8d1dc6 | 3387 | switch (bs->breakpoint_at->owner->type) |
c906108c SS |
3388 | { |
3389 | case bp_none: | |
3390 | continue; | |
3391 | ||
3392 | case bp_breakpoint: | |
3393 | case bp_hardware_breakpoint: | |
3394 | case bp_until: | |
3395 | case bp_finish: | |
3396 | if (bs->stop) | |
3397 | { | |
3398 | if (bs->print) | |
3399 | bs_class = bp_noisy; | |
3400 | else | |
3401 | bs_class = bp_silent; | |
3402 | } | |
3403 | else | |
3404 | bs_class = bp_nostop; | |
3405 | break; | |
3406 | case bp_watchpoint: | |
3407 | case bp_hardware_watchpoint: | |
3408 | case bp_read_watchpoint: | |
3409 | case bp_access_watchpoint: | |
3410 | if (bs->stop) | |
3411 | { | |
3412 | if (bs->print) | |
3413 | bs_class = wp_noisy; | |
3414 | else | |
3415 | bs_class = wp_silent; | |
3416 | } | |
3417 | else | |
53a5351d JM |
3418 | /* There was a watchpoint, but we're not stopping. |
3419 | This requires no further action. */ | |
c906108c SS |
3420 | bs_class = no_effect; |
3421 | break; | |
3422 | case bp_longjmp: | |
3423 | bs_class = long_jump; | |
3424 | break; | |
3425 | case bp_longjmp_resume: | |
3426 | bs_class = long_resume; | |
3427 | break; | |
3428 | case bp_step_resume: | |
3429 | if (bs->stop) | |
3430 | { | |
3431 | bs_class = step_resume; | |
3432 | } | |
3433 | else | |
3434 | /* It is for the wrong frame. */ | |
3435 | bs_class = bp_nostop; | |
3436 | break; | |
c906108c SS |
3437 | case bp_watchpoint_scope: |
3438 | bs_class = bp_nostop; | |
3439 | break; | |
c5aa993b JM |
3440 | case bp_shlib_event: |
3441 | bs_class = shlib_event; | |
3442 | break; | |
c4093a6a | 3443 | case bp_thread_event: |
1900040c | 3444 | case bp_overlay_event: |
0fd8e87f | 3445 | case bp_longjmp_master: |
c4093a6a JM |
3446 | bs_class = bp_nostop; |
3447 | break; | |
ce78b96d | 3448 | case bp_catchpoint: |
c5aa993b JM |
3449 | if (bs->stop) |
3450 | { | |
3451 | if (bs->print) | |
3452 | bs_class = bp_noisy; | |
3453 | else | |
3454 | bs_class = bp_silent; | |
3455 | } | |
3456 | else | |
53a5351d JM |
3457 | /* There was a catchpoint, but we're not stopping. |
3458 | This requires no further action. */ | |
c5aa993b JM |
3459 | bs_class = no_effect; |
3460 | break; | |
c906108c | 3461 | case bp_call_dummy: |
53a5351d JM |
3462 | /* Make sure the action is stop (silent or noisy), |
3463 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
3464 | bs_class = bp_silent; |
3465 | retval.call_dummy = 1; | |
3466 | break; | |
1042e4c0 SS |
3467 | case bp_tracepoint: |
3468 | /* Tracepoint hits should not be reported back to GDB, and | |
3469 | if one got through somehow, it should have been filtered | |
3470 | out already. */ | |
3471 | internal_error (__FILE__, __LINE__, | |
3472 | _("bpstat_what: bp_tracepoint encountered")); | |
3473 | break; | |
c906108c | 3474 | } |
c5aa993b | 3475 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
3476 | } |
3477 | retval.main_action = current_action; | |
3478 | return retval; | |
3479 | } | |
3480 | ||
3481 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
3482 | without hardware support). This isn't related to a specific bpstat, | |
3483 | just to things like whether watchpoints are set. */ | |
3484 | ||
c5aa993b | 3485 | int |
fba45db2 | 3486 | bpstat_should_step (void) |
c906108c SS |
3487 | { |
3488 | struct breakpoint *b; | |
3489 | ALL_BREAKPOINTS (b) | |
717a8278 | 3490 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 3491 | return 1; |
c906108c SS |
3492 | return 0; |
3493 | } | |
3494 | ||
c906108c | 3495 | \f |
c5aa993b | 3496 | |
0d381245 VP |
3497 | static void print_breakpoint_location (struct breakpoint *b, |
3498 | struct bp_location *loc, | |
3499 | char *wrap_indent, | |
3500 | struct ui_stream *stb) | |
3501 | { | |
3502 | if (b->source_file) | |
3503 | { | |
3504 | struct symbol *sym | |
3505 | = find_pc_sect_function (loc->address, loc->section); | |
3506 | if (sym) | |
3507 | { | |
3508 | ui_out_text (uiout, "in "); | |
3509 | ui_out_field_string (uiout, "func", | |
3510 | SYMBOL_PRINT_NAME (sym)); | |
3511 | ui_out_wrap_hint (uiout, wrap_indent); | |
3512 | ui_out_text (uiout, " at "); | |
3513 | } | |
3514 | ui_out_field_string (uiout, "file", b->source_file); | |
3515 | ui_out_text (uiout, ":"); | |
3516 | ||
3517 | if (ui_out_is_mi_like_p (uiout)) | |
3518 | { | |
3519 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
3520 | char *fullname = symtab_to_fullname (sal.symtab); | |
3521 | ||
3522 | if (fullname) | |
3523 | ui_out_field_string (uiout, "fullname", fullname); | |
3524 | } | |
3525 | ||
3526 | ui_out_field_int (uiout, "line", b->line_number); | |
3527 | } | |
3528 | else if (!b->loc) | |
3529 | { | |
3530 | ui_out_field_string (uiout, "pending", b->addr_string); | |
3531 | } | |
3532 | else | |
3533 | { | |
3534 | print_address_symbolic (loc->address, stb->stream, demangle, ""); | |
3535 | ui_out_field_stream (uiout, "at", stb); | |
3536 | } | |
3537 | } | |
3538 | ||
c4093a6a | 3539 | /* Print B to gdb_stdout. */ |
c906108c | 3540 | static void |
0d381245 VP |
3541 | print_one_breakpoint_location (struct breakpoint *b, |
3542 | struct bp_location *loc, | |
3543 | int loc_number, | |
3544 | CORE_ADDR *last_addr) | |
c906108c | 3545 | { |
52f0bd74 AC |
3546 | struct command_line *l; |
3547 | struct symbol *sym; | |
c4093a6a JM |
3548 | struct ep_type_description |
3549 | { | |
3550 | enum bptype type; | |
3551 | char *description; | |
3552 | }; | |
3553 | static struct ep_type_description bptypes[] = | |
c906108c | 3554 | { |
c5aa993b JM |
3555 | {bp_none, "?deleted?"}, |
3556 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3557 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3558 | {bp_until, "until"}, |
3559 | {bp_finish, "finish"}, | |
3560 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3561 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3562 | {bp_read_watchpoint, "read watchpoint"}, |
3563 | {bp_access_watchpoint, "acc watchpoint"}, | |
3564 | {bp_longjmp, "longjmp"}, | |
3565 | {bp_longjmp_resume, "longjmp resume"}, | |
3566 | {bp_step_resume, "step resume"}, | |
c5aa993b JM |
3567 | {bp_watchpoint_scope, "watchpoint scope"}, |
3568 | {bp_call_dummy, "call dummy"}, | |
3569 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3570 | {bp_thread_event, "thread events"}, |
1900040c | 3571 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 3572 | {bp_longjmp_master, "longjmp master"}, |
ce78b96d | 3573 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 3574 | {bp_tracepoint, "tracepoint"}, |
c5aa993b | 3575 | }; |
c4093a6a | 3576 | |
c2c6d25f | 3577 | static char bpenables[] = "nynny"; |
c906108c | 3578 | char wrap_indent[80]; |
8b93c638 JM |
3579 | struct ui_stream *stb = ui_out_stream_new (uiout); |
3580 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 3581 | struct cleanup *bkpt_chain; |
c906108c | 3582 | |
0d381245 VP |
3583 | int header_of_multiple = 0; |
3584 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
3585 | struct value_print_options opts; |
3586 | ||
3587 | get_user_print_options (&opts); | |
0d381245 VP |
3588 | |
3589 | gdb_assert (!loc || loc_number != 0); | |
3590 | /* See comment in print_one_breakpoint concerning | |
3591 | treatment of breakpoints with single disabled | |
3592 | location. */ | |
3593 | if (loc == NULL | |
3594 | && (b->loc != NULL | |
3595 | && (b->loc->next != NULL || !b->loc->enabled))) | |
3596 | header_of_multiple = 1; | |
3597 | if (loc == NULL) | |
3598 | loc = b->loc; | |
3599 | ||
c4093a6a | 3600 | annotate_record (); |
3b31d625 | 3601 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
3602 | |
3603 | /* 1 */ | |
3604 | annotate_field (0); | |
0d381245 VP |
3605 | if (part_of_multiple) |
3606 | { | |
3607 | char *formatted; | |
0c6773c1 | 3608 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
3609 | ui_out_field_string (uiout, "number", formatted); |
3610 | xfree (formatted); | |
3611 | } | |
3612 | else | |
3613 | { | |
3614 | ui_out_field_int (uiout, "number", b->number); | |
3615 | } | |
c4093a6a JM |
3616 | |
3617 | /* 2 */ | |
3618 | annotate_field (1); | |
0d381245 VP |
3619 | if (part_of_multiple) |
3620 | ui_out_field_skip (uiout, "type"); | |
3621 | else | |
3622 | { | |
3623 | if (((int) b->type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3624 | || ((int) b->type != bptypes[(int) b->type].type)) | |
3625 | internal_error (__FILE__, __LINE__, | |
3626 | _("bptypes table does not describe type #%d."), | |
3627 | (int) b->type); | |
3628 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); | |
3629 | } | |
c4093a6a JM |
3630 | |
3631 | /* 3 */ | |
3632 | annotate_field (2); | |
0d381245 VP |
3633 | if (part_of_multiple) |
3634 | ui_out_field_skip (uiout, "disp"); | |
3635 | else | |
2cec12e5 | 3636 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 3637 | |
c4093a6a JM |
3638 | |
3639 | /* 4 */ | |
3640 | annotate_field (3); | |
0d381245 | 3641 | if (part_of_multiple) |
54e52265 | 3642 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 3643 | else |
54e52265 VP |
3644 | ui_out_field_fmt (uiout, "enabled", "%c", |
3645 | bpenables[(int) b->enable_state]); | |
3646 | ui_out_spaces (uiout, 2); | |
0d381245 | 3647 | |
c4093a6a JM |
3648 | |
3649 | /* 5 and 6 */ | |
3650 | strcpy (wrap_indent, " "); | |
79a45b7d | 3651 | if (opts.addressprint) |
75ac9d7b | 3652 | { |
17a912b6 | 3653 | if (gdbarch_addr_bit (current_gdbarch) <= 32) |
75ac9d7b MS |
3654 | strcat (wrap_indent, " "); |
3655 | else | |
3656 | strcat (wrap_indent, " "); | |
3657 | } | |
c906108c | 3658 | |
3086aeae | 3659 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 VP |
3660 | { |
3661 | /* Although the print_one can possibly print | |
3662 | all locations, calling it here is not likely | |
3663 | to get any nice result. So, make sure there's | |
3664 | just one location. */ | |
3665 | gdb_assert (b->loc == NULL || b->loc->next == NULL); | |
3666 | b->ops->print_one (b, last_addr); | |
3667 | } | |
3086aeae DJ |
3668 | else |
3669 | switch (b->type) | |
3670 | { | |
3671 | case bp_none: | |
3672 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 3673 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 3674 | break; |
c906108c | 3675 | |
3086aeae DJ |
3676 | case bp_watchpoint: |
3677 | case bp_hardware_watchpoint: | |
3678 | case bp_read_watchpoint: | |
3679 | case bp_access_watchpoint: | |
3680 | /* Field 4, the address, is omitted (which makes the columns | |
3681 | not line up too nicely with the headers, but the effect | |
3682 | is relatively readable). */ | |
79a45b7d | 3683 | if (opts.addressprint) |
3086aeae DJ |
3684 | ui_out_field_skip (uiout, "addr"); |
3685 | annotate_field (5); | |
fa8a61dc | 3686 | ui_out_field_string (uiout, "what", b->exp_string); |
3086aeae DJ |
3687 | break; |
3688 | ||
3086aeae DJ |
3689 | case bp_breakpoint: |
3690 | case bp_hardware_breakpoint: | |
3691 | case bp_until: | |
3692 | case bp_finish: | |
3693 | case bp_longjmp: | |
3694 | case bp_longjmp_resume: | |
3695 | case bp_step_resume: | |
3086aeae DJ |
3696 | case bp_watchpoint_scope: |
3697 | case bp_call_dummy: | |
3698 | case bp_shlib_event: | |
3699 | case bp_thread_event: | |
3700 | case bp_overlay_event: | |
0fd8e87f | 3701 | case bp_longjmp_master: |
1042e4c0 | 3702 | case bp_tracepoint: |
79a45b7d | 3703 | if (opts.addressprint) |
3086aeae DJ |
3704 | { |
3705 | annotate_field (4); | |
54e52265 | 3706 | if (header_of_multiple) |
0d381245 | 3707 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 3708 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 3709 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 3710 | else |
0d381245 | 3711 | ui_out_field_core_addr (uiout, "addr", loc->address); |
3086aeae DJ |
3712 | } |
3713 | annotate_field (5); | |
0d381245 VP |
3714 | if (!header_of_multiple) |
3715 | print_breakpoint_location (b, loc, wrap_indent, stb); | |
3716 | if (b->loc) | |
3717 | *last_addr = b->loc->address; | |
3086aeae DJ |
3718 | break; |
3719 | } | |
c906108c | 3720 | |
4a306c9a | 3721 | if (!part_of_multiple) |
c4093a6a | 3722 | { |
4a306c9a JB |
3723 | if (b->thread != -1) |
3724 | { | |
3725 | /* FIXME: This seems to be redundant and lost here; see the | |
3726 | "stop only in" line a little further down. */ | |
3727 | ui_out_text (uiout, " thread "); | |
3728 | ui_out_field_int (uiout, "thread", b->thread); | |
3729 | } | |
3730 | else if (b->task != 0) | |
3731 | { | |
3732 | ui_out_text (uiout, " task "); | |
3733 | ui_out_field_int (uiout, "task", b->task); | |
3734 | } | |
c4093a6a JM |
3735 | } |
3736 | ||
8b93c638 | 3737 | ui_out_text (uiout, "\n"); |
c4093a6a | 3738 | |
0d381245 | 3739 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
3740 | { |
3741 | annotate_field (6); | |
8b93c638 | 3742 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
3743 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
3744 | the frame ID. */ | |
d0a55772 | 3745 | ui_out_field_core_addr (uiout, "frame", b->frame_id.stack_addr); |
8b93c638 | 3746 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
3747 | } |
3748 | ||
0d381245 | 3749 | if (!part_of_multiple && b->cond_string && !ada_exception_catchpoint_p (b)) |
c4093a6a | 3750 | { |
f7f9143b JB |
3751 | /* We do not print the condition for Ada exception catchpoints |
3752 | because the condition is an internal implementation detail | |
3753 | that we do not want to expose to the user. */ | |
c4093a6a | 3754 | annotate_field (7); |
1042e4c0 SS |
3755 | if (b->type == bp_tracepoint) |
3756 | ui_out_text (uiout, "\ttrace only if "); | |
3757 | else | |
3758 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 JJ |
3759 | ui_out_field_string (uiout, "cond", b->cond_string); |
3760 | ui_out_text (uiout, "\n"); | |
3761 | } | |
3762 | ||
0d381245 | 3763 | if (!part_of_multiple && b->thread != -1) |
c4093a6a JM |
3764 | { |
3765 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3766 | ui_out_text (uiout, "\tstop only in thread "); |
3767 | ui_out_field_int (uiout, "thread", b->thread); | |
3768 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3769 | } |
3770 | ||
63c715c6 | 3771 | if (!part_of_multiple && b->hit_count) |
c4093a6a JM |
3772 | { |
3773 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3774 | if (ep_is_catchpoint (b)) |
3775 | ui_out_text (uiout, "\tcatchpoint"); | |
3776 | else | |
3777 | ui_out_text (uiout, "\tbreakpoint"); | |
3778 | ui_out_text (uiout, " already hit "); | |
3779 | ui_out_field_int (uiout, "times", b->hit_count); | |
3780 | if (b->hit_count == 1) | |
3781 | ui_out_text (uiout, " time\n"); | |
3782 | else | |
3783 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
3784 | } |
3785 | ||
fb40c209 AC |
3786 | /* Output the count also if it is zero, but only if this is |
3787 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 3788 | if (ui_out_is_mi_like_p (uiout)) |
63c715c6 | 3789 | if (!part_of_multiple && b->hit_count == 0) |
fb40c209 | 3790 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 3791 | |
0d381245 | 3792 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
3793 | { |
3794 | annotate_field (8); | |
8b93c638 JM |
3795 | ui_out_text (uiout, "\tignore next "); |
3796 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3797 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 3798 | } |
059fb39f PM |
3799 | |
3800 | l = b->commands; | |
3801 | if (!part_of_multiple && l) | |
c4093a6a | 3802 | { |
3b31d625 EZ |
3803 | struct cleanup *script_chain; |
3804 | ||
c4093a6a | 3805 | annotate_field (9); |
3b31d625 | 3806 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 3807 | print_command_lines (uiout, l, 4); |
3b31d625 | 3808 | do_cleanups (script_chain); |
c4093a6a | 3809 | } |
d24317b4 | 3810 | |
1042e4c0 SS |
3811 | if (!part_of_multiple && b->pass_count) |
3812 | { | |
3813 | annotate_field (10); | |
3814 | ui_out_text (uiout, "\tpass count "); | |
3815 | ui_out_field_int (uiout, "pass", b->pass_count); | |
3816 | ui_out_text (uiout, " \n"); | |
3817 | } | |
3818 | ||
3819 | if (!part_of_multiple && b->step_count) | |
3820 | { | |
3821 | annotate_field (11); | |
3822 | ui_out_text (uiout, "\tstep count "); | |
3823 | ui_out_field_int (uiout, "step", b->step_count); | |
3824 | ui_out_text (uiout, " \n"); | |
3825 | } | |
3826 | ||
3827 | if (!part_of_multiple && b->actions) | |
3828 | { | |
3829 | struct action_line *action; | |
3830 | annotate_field (12); | |
3831 | for (action = b->actions; action; action = action->next) | |
3832 | { | |
3833 | ui_out_text (uiout, " A\t"); | |
3834 | ui_out_text (uiout, action->action); | |
3835 | ui_out_text (uiout, "\n"); | |
3836 | } | |
3837 | } | |
3838 | ||
d24317b4 VP |
3839 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
3840 | { | |
3841 | if (b->addr_string) | |
3842 | ui_out_field_string (uiout, "original-location", b->addr_string); | |
3843 | else if (b->exp_string) | |
3844 | ui_out_field_string (uiout, "original-location", b->exp_string); | |
3845 | } | |
3846 | ||
3b31d625 | 3847 | do_cleanups (bkpt_chain); |
8b93c638 | 3848 | do_cleanups (old_chain); |
c4093a6a | 3849 | } |
c5aa993b | 3850 | |
0d381245 VP |
3851 | static void |
3852 | print_one_breakpoint (struct breakpoint *b, | |
3853 | CORE_ADDR *last_addr) | |
3854 | { | |
3855 | print_one_breakpoint_location (b, NULL, 0, last_addr); | |
3856 | ||
3857 | /* If this breakpoint has custom print function, | |
3858 | it's already printed. Otherwise, print individual | |
3859 | locations, if any. */ | |
3860 | if (b->ops == NULL || b->ops->print_one == NULL) | |
3861 | { | |
3862 | /* If breakpoint has a single location that is | |
3863 | disabled, we print it as if it had | |
3864 | several locations, since otherwise it's hard to | |
3865 | represent "breakpoint enabled, location disabled" | |
a5606eee VP |
3866 | situation. |
3867 | Note that while hardware watchpoints have | |
3868 | several locations internally, that's no a property | |
3869 | exposed to user. */ | |
0d381245 | 3870 | if (b->loc |
a5606eee | 3871 | && !is_hardware_watchpoint (b) |
0d381245 | 3872 | && (b->loc->next || !b->loc->enabled) |
a5606eee | 3873 | && !ui_out_is_mi_like_p (uiout)) |
0d381245 VP |
3874 | { |
3875 | struct bp_location *loc; | |
3876 | int n = 1; | |
3877 | for (loc = b->loc; loc; loc = loc->next, ++n) | |
3878 | print_one_breakpoint_location (b, loc, n, last_addr); | |
3879 | } | |
3880 | } | |
3881 | } | |
3882 | ||
3883 | ||
c4093a6a JM |
3884 | struct captured_breakpoint_query_args |
3885 | { | |
3886 | int bnum; | |
3887 | }; | |
c5aa993b | 3888 | |
c4093a6a | 3889 | static int |
2b65245e | 3890 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
3891 | { |
3892 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 3893 | struct breakpoint *b; |
c4093a6a JM |
3894 | CORE_ADDR dummy_addr = 0; |
3895 | ALL_BREAKPOINTS (b) | |
3896 | { | |
3897 | if (args->bnum == b->number) | |
c5aa993b | 3898 | { |
c4093a6a JM |
3899 | print_one_breakpoint (b, &dummy_addr); |
3900 | return GDB_RC_OK; | |
c5aa993b | 3901 | } |
c4093a6a JM |
3902 | } |
3903 | return GDB_RC_NONE; | |
3904 | } | |
c5aa993b | 3905 | |
c4093a6a | 3906 | enum gdb_rc |
ce43223b | 3907 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, char **error_message) |
c4093a6a JM |
3908 | { |
3909 | struct captured_breakpoint_query_args args; | |
3910 | args.bnum = bnum; | |
3911 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3912 | an error. */ | |
b0b13bb4 DJ |
3913 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
3914 | error_message, RETURN_MASK_ALL) < 0) | |
3915 | return GDB_RC_FAIL; | |
3916 | else | |
3917 | return GDB_RC_OK; | |
c4093a6a | 3918 | } |
c5aa993b | 3919 | |
7f3b0473 AC |
3920 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
3921 | catchpoints, et.al.). */ | |
3922 | ||
3923 | static int | |
3924 | user_settable_breakpoint (const struct breakpoint *b) | |
3925 | { | |
3926 | return (b->type == bp_breakpoint | |
ce78b96d | 3927 | || b->type == bp_catchpoint |
7f3b0473 | 3928 | || b->type == bp_hardware_breakpoint |
1042e4c0 | 3929 | || b->type == bp_tracepoint |
7f3b0473 AC |
3930 | || b->type == bp_watchpoint |
3931 | || b->type == bp_read_watchpoint | |
3932 | || b->type == bp_access_watchpoint | |
3933 | || b->type == bp_hardware_watchpoint); | |
3934 | } | |
3935 | ||
3936 | /* Print information on user settable breakpoint (watchpoint, etc) | |
3937 | number BNUM. If BNUM is -1 print all user settable breakpoints. | |
3938 | If ALLFLAG is non-zero, include non- user settable breakpoints. */ | |
c906108c | 3939 | |
c4093a6a | 3940 | static void |
fba45db2 | 3941 | breakpoint_1 (int bnum, int allflag) |
c4093a6a | 3942 | { |
52f0bd74 | 3943 | struct breakpoint *b; |
c4093a6a | 3944 | CORE_ADDR last_addr = (CORE_ADDR) -1; |
7f3b0473 | 3945 | int nr_printable_breakpoints; |
3b31d625 | 3946 | struct cleanup *bkpttbl_chain; |
79a45b7d | 3947 | struct value_print_options opts; |
c4093a6a | 3948 | |
79a45b7d TT |
3949 | get_user_print_options (&opts); |
3950 | ||
7f3b0473 AC |
3951 | /* Compute the number of rows in the table. */ |
3952 | nr_printable_breakpoints = 0; | |
3953 | ALL_BREAKPOINTS (b) | |
3954 | if (bnum == -1 | |
3955 | || bnum == b->number) | |
3956 | { | |
3957 | if (allflag || user_settable_breakpoint (b)) | |
3958 | nr_printable_breakpoints++; | |
3959 | } | |
3960 | ||
79a45b7d | 3961 | if (opts.addressprint) |
3b31d625 EZ |
3962 | bkpttbl_chain |
3963 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
3964 | "BreakpointTable"); | |
8b93c638 | 3965 | else |
3b31d625 EZ |
3966 | bkpttbl_chain |
3967 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
3968 | "BreakpointTable"); | |
8b93c638 | 3969 | |
7f3b0473 | 3970 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
3971 | annotate_breakpoints_headers (); |
3972 | if (nr_printable_breakpoints > 0) | |
3973 | annotate_field (0); | |
0d381245 | 3974 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
3975 | if (nr_printable_breakpoints > 0) |
3976 | annotate_field (1); | |
3977 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
3978 | if (nr_printable_breakpoints > 0) | |
3979 | annotate_field (2); | |
3980 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
3981 | if (nr_printable_breakpoints > 0) | |
3982 | annotate_field (3); | |
54e52265 | 3983 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 3984 | if (opts.addressprint) |
7f3b0473 | 3985 | { |
d7faa9e7 AC |
3986 | if (nr_printable_breakpoints > 0) |
3987 | annotate_field (4); | |
17a912b6 | 3988 | if (gdbarch_addr_bit (current_gdbarch) <= 32) |
b25959ec | 3989 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3990 | else |
b25959ec | 3991 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3992 | } |
d7faa9e7 AC |
3993 | if (nr_printable_breakpoints > 0) |
3994 | annotate_field (5); | |
3995 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
3996 | ui_out_table_body (uiout); | |
3997 | if (nr_printable_breakpoints > 0) | |
3998 | annotate_breakpoints_table (); | |
7f3b0473 | 3999 | |
c4093a6a JM |
4000 | ALL_BREAKPOINTS (b) |
4001 | if (bnum == -1 | |
4002 | || bnum == b->number) | |
4003 | { | |
4004 | /* We only print out user settable breakpoints unless the | |
4005 | allflag is set. */ | |
7f3b0473 AC |
4006 | if (allflag || user_settable_breakpoint (b)) |
4007 | print_one_breakpoint (b, &last_addr); | |
c4093a6a JM |
4008 | } |
4009 | ||
3b31d625 | 4010 | do_cleanups (bkpttbl_chain); |
698384cd | 4011 | |
7f3b0473 | 4012 | if (nr_printable_breakpoints == 0) |
c906108c | 4013 | { |
8b93c638 JM |
4014 | if (bnum == -1) |
4015 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
4016 | else | |
4017 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
4018 | bnum); | |
c906108c SS |
4019 | } |
4020 | else | |
c4093a6a JM |
4021 | { |
4022 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
4023 | that a comparison of an unsigned with -1 is always false. */ | |
d1aa2f50 | 4024 | if (last_addr != (CORE_ADDR) -1 && !server_command) |
8b9b9e1a | 4025 | set_next_address (current_gdbarch, last_addr); |
c4093a6a | 4026 | } |
c906108c | 4027 | |
c4093a6a JM |
4028 | /* FIXME? Should this be moved up so that it is only called when |
4029 | there have been breakpoints? */ | |
c906108c SS |
4030 | annotate_breakpoints_table_end (); |
4031 | } | |
4032 | ||
c906108c | 4033 | static void |
fba45db2 | 4034 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
4035 | { |
4036 | int bnum = -1; | |
4037 | ||
4038 | if (bnum_exp) | |
bb518678 | 4039 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
4040 | |
4041 | breakpoint_1 (bnum, 0); | |
4042 | } | |
4043 | ||
7a292a7a | 4044 | static void |
fba45db2 | 4045 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
4046 | { |
4047 | int bnum = -1; | |
4048 | ||
4049 | if (bnum_exp) | |
bb518678 | 4050 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
4051 | |
4052 | breakpoint_1 (bnum, 1); | |
4053 | } | |
4054 | ||
0d381245 | 4055 | static int |
714835d5 UW |
4056 | breakpoint_has_pc (struct breakpoint *b, |
4057 | CORE_ADDR pc, struct obj_section *section) | |
0d381245 VP |
4058 | { |
4059 | struct bp_location *bl = b->loc; | |
4060 | for (; bl; bl = bl->next) | |
4061 | { | |
4062 | if (bl->address == pc | |
4063 | && (!overlay_debugging || bl->section == section)) | |
4064 | return 1; | |
4065 | } | |
4066 | return 0; | |
4067 | } | |
4068 | ||
c906108c SS |
4069 | /* Print a message describing any breakpoints set at PC. */ |
4070 | ||
4071 | static void | |
714835d5 UW |
4072 | describe_other_breakpoints (CORE_ADDR pc, struct obj_section *section, |
4073 | int thread) | |
c906108c | 4074 | { |
52f0bd74 AC |
4075 | int others = 0; |
4076 | struct breakpoint *b; | |
c906108c SS |
4077 | |
4078 | ALL_BREAKPOINTS (b) | |
0d381245 | 4079 | others += breakpoint_has_pc (b, pc, section); |
c906108c SS |
4080 | if (others > 0) |
4081 | { | |
a3f17187 AC |
4082 | if (others == 1) |
4083 | printf_filtered (_("Note: breakpoint ")); | |
4084 | else /* if (others == ???) */ | |
4085 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 4086 | ALL_BREAKPOINTS (b) |
0d381245 VP |
4087 | if (breakpoint_has_pc (b, pc, section)) |
4088 | { | |
4089 | others--; | |
4090 | printf_filtered ("%d", b->number); | |
4091 | if (b->thread == -1 && thread != -1) | |
4092 | printf_filtered (" (all threads)"); | |
4093 | else if (b->thread != -1) | |
4094 | printf_filtered (" (thread %d)", b->thread); | |
4095 | printf_filtered ("%s%s ", | |
059fb39f PM |
4096 | ((b->enable_state == bp_disabled |
4097 | || b->enable_state == bp_call_disabled) | |
0d381245 VP |
4098 | ? " (disabled)" |
4099 | : b->enable_state == bp_permanent | |
4100 | ? " (permanent)" | |
4101 | : ""), | |
4102 | (others > 1) ? "," | |
4103 | : ((others == 1) ? " and" : "")); | |
4104 | } | |
a3f17187 | 4105 | printf_filtered (_("also set at pc ")); |
ed49a04f | 4106 | fputs_filtered (paddress (pc), gdb_stdout); |
c906108c SS |
4107 | printf_filtered (".\n"); |
4108 | } | |
4109 | } | |
4110 | \f | |
4111 | /* Set the default place to put a breakpoint | |
4112 | for the `break' command with no arguments. */ | |
4113 | ||
4114 | void | |
fba45db2 KB |
4115 | set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, |
4116 | int line) | |
c906108c SS |
4117 | { |
4118 | default_breakpoint_valid = valid; | |
4119 | default_breakpoint_address = addr; | |
4120 | default_breakpoint_symtab = symtab; | |
4121 | default_breakpoint_line = line; | |
4122 | } | |
4123 | ||
e4f237da KB |
4124 | /* Return true iff it is meaningful to use the address member of |
4125 | BPT. For some breakpoint types, the address member is irrelevant | |
4126 | and it makes no sense to attempt to compare it to other addresses | |
4127 | (or use it for any other purpose either). | |
4128 | ||
4129 | More specifically, each of the following breakpoint types will always | |
4130 | have a zero valued address and we don't want check_duplicates() to mark | |
4131 | breakpoints of any of these types to be a duplicate of an actual | |
4132 | breakpoint at address zero: | |
4133 | ||
4134 | bp_watchpoint | |
4135 | bp_hardware_watchpoint | |
4136 | bp_read_watchpoint | |
4137 | bp_access_watchpoint | |
fe798b75 | 4138 | bp_catchpoint */ |
e4f237da KB |
4139 | |
4140 | static int | |
4141 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
4142 | { | |
4143 | enum bptype type = bpt->type; | |
4144 | ||
4145 | return (type != bp_watchpoint | |
4146 | && type != bp_hardware_watchpoint | |
4147 | && type != bp_read_watchpoint | |
4148 | && type != bp_access_watchpoint | |
fe798b75 | 4149 | && type != bp_catchpoint); |
e4f237da KB |
4150 | } |
4151 | ||
9f60f21b | 4152 | /* Rescan breakpoints at the same address and section as BPT, |
c906108c | 4153 | marking the first one as "first" and any others as "duplicates". |
c2c6d25f | 4154 | This is so that the bpt instruction is only inserted once. |
9f60f21b JB |
4155 | If we have a permanent breakpoint at the same place as BPT, make |
4156 | that one the official one, and the rest as duplicates. */ | |
c906108c SS |
4157 | |
4158 | static void | |
714835d5 | 4159 | check_duplicates_for (CORE_ADDR address, struct obj_section *section) |
c906108c | 4160 | { |
075f6582 | 4161 | struct bp_location *b; |
52f0bd74 | 4162 | int count = 0; |
075f6582 | 4163 | struct bp_location *perm_bp = 0; |
c906108c | 4164 | |
075f6582 DJ |
4165 | ALL_BP_LOCATIONS (b) |
4166 | if (b->owner->enable_state != bp_disabled | |
075f6582 | 4167 | && b->owner->enable_state != bp_call_disabled |
0d381245 VP |
4168 | && b->enabled |
4169 | && !b->shlib_disabled | |
075f6582 DJ |
4170 | && b->address == address /* address / overlay match */ |
4171 | && (!overlay_debugging || b->section == section) | |
4172 | && breakpoint_address_is_meaningful (b->owner)) | |
c5aa993b | 4173 | { |
c2c6d25f | 4174 | /* Have we found a permanent breakpoint? */ |
075f6582 | 4175 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
4176 | { |
4177 | perm_bp = b; | |
4178 | break; | |
4179 | } | |
4180 | ||
c5aa993b | 4181 | count++; |
075f6582 | 4182 | b->duplicate = count > 1; |
c5aa993b | 4183 | } |
c2c6d25f JM |
4184 | |
4185 | /* If we found a permanent breakpoint at this address, go over the | |
aae64587 PA |
4186 | list again and declare all the other breakpoints there (except |
4187 | other permanent breakpoints) to be the duplicates. */ | |
c2c6d25f JM |
4188 | if (perm_bp) |
4189 | { | |
075f6582 | 4190 | perm_bp->duplicate = 0; |
c2c6d25f JM |
4191 | |
4192 | /* Permanent breakpoint should always be inserted. */ | |
075f6582 | 4193 | if (! perm_bp->inserted) |
8e65ff28 | 4194 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 AC |
4195 | _("allegedly permanent breakpoint is not " |
4196 | "actually inserted")); | |
c2c6d25f | 4197 | |
075f6582 | 4198 | ALL_BP_LOCATIONS (b) |
c2c6d25f JM |
4199 | if (b != perm_bp) |
4200 | { | |
aae64587 PA |
4201 | if (b->owner->enable_state != bp_permanent |
4202 | && b->owner->enable_state != bp_disabled | |
075f6582 | 4203 | && b->owner->enable_state != bp_call_disabled |
0d381245 | 4204 | && b->enabled && !b->shlib_disabled |
075f6582 DJ |
4205 | && b->address == address /* address / overlay match */ |
4206 | && (!overlay_debugging || b->section == section) | |
4207 | && breakpoint_address_is_meaningful (b->owner)) | |
4208 | { | |
4209 | if (b->inserted) | |
4210 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 AC |
4211 | _("another breakpoint was inserted on top of " |
4212 | "a permanent breakpoint")); | |
075f6582 DJ |
4213 | |
4214 | b->duplicate = 1; | |
4215 | } | |
c2c6d25f JM |
4216 | } |
4217 | } | |
c906108c SS |
4218 | } |
4219 | ||
0d381245 VP |
4220 | static void |
4221 | check_duplicates (struct breakpoint *bpt) | |
4222 | { | |
4223 | struct bp_location *bl = bpt->loc; | |
4224 | ||
4225 | if (! breakpoint_address_is_meaningful (bpt)) | |
4226 | return; | |
4227 | ||
4228 | for (; bl; bl = bl->next) | |
4229 | check_duplicates_for (bl->address, bl->section); | |
4230 | } | |
4231 | ||
76897487 KB |
4232 | static void |
4233 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
4234 | int bnum, int have_bnum) | |
4235 | { | |
4236 | char astr1[40]; | |
4237 | char astr2[40]; | |
4238 | ||
bb599908 PH |
4239 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
4240 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 4241 | if (have_bnum) |
8a3fe4f8 | 4242 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
4243 | bnum, astr1, astr2); |
4244 | else | |
8a3fe4f8 | 4245 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
4246 | } |
4247 | ||
4248 | /* Adjust a breakpoint's address to account for architectural constraints | |
4249 | on breakpoint placement. Return the adjusted address. Note: Very | |
4250 | few targets require this kind of adjustment. For most targets, | |
4251 | this function is simply the identity function. */ | |
4252 | ||
4253 | static CORE_ADDR | |
88f7da05 | 4254 | adjust_breakpoint_address (CORE_ADDR bpaddr, enum bptype bptype) |
76897487 KB |
4255 | { |
4256 | if (!gdbarch_adjust_breakpoint_address_p (current_gdbarch)) | |
4257 | { | |
4258 | /* Very few targets need any kind of breakpoint adjustment. */ | |
4259 | return bpaddr; | |
4260 | } | |
88f7da05 KB |
4261 | else if (bptype == bp_watchpoint |
4262 | || bptype == bp_hardware_watchpoint | |
4263 | || bptype == bp_read_watchpoint | |
4264 | || bptype == bp_access_watchpoint | |
fe798b75 | 4265 | || bptype == bp_catchpoint) |
88f7da05 KB |
4266 | { |
4267 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
4268 | have their addresses modified. */ | |
4269 | return bpaddr; | |
4270 | } | |
76897487 KB |
4271 | else |
4272 | { | |
4273 | CORE_ADDR adjusted_bpaddr; | |
4274 | ||
4275 | /* Some targets have architectural constraints on the placement | |
4276 | of breakpoint instructions. Obtain the adjusted address. */ | |
4277 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (current_gdbarch, | |
4278 | bpaddr); | |
4279 | ||
4280 | /* An adjusted breakpoint address can significantly alter | |
4281 | a user's expectations. Print a warning if an adjustment | |
4282 | is required. */ | |
4283 | if (adjusted_bpaddr != bpaddr) | |
4284 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
4285 | ||
4286 | return adjusted_bpaddr; | |
4287 | } | |
4288 | } | |
4289 | ||
7cc221ef DJ |
4290 | /* Allocate a struct bp_location. */ |
4291 | ||
26bb91f3 | 4292 | static struct bp_location * |
39d61571 | 4293 | allocate_bp_location (struct breakpoint *bpt) |
7cc221ef DJ |
4294 | { |
4295 | struct bp_location *loc, *loc_p; | |
4296 | ||
4297 | loc = xmalloc (sizeof (struct bp_location)); | |
4298 | memset (loc, 0, sizeof (*loc)); | |
4299 | ||
e049a4b5 | 4300 | loc->owner = bpt; |
511a6cd4 | 4301 | loc->cond = NULL; |
0d381245 VP |
4302 | loc->shlib_disabled = 0; |
4303 | loc->enabled = 1; | |
e049a4b5 | 4304 | |
39d61571 | 4305 | switch (bpt->type) |
e049a4b5 DJ |
4306 | { |
4307 | case bp_breakpoint: | |
1042e4c0 | 4308 | case bp_tracepoint: |
e049a4b5 DJ |
4309 | case bp_until: |
4310 | case bp_finish: | |
4311 | case bp_longjmp: | |
4312 | case bp_longjmp_resume: | |
4313 | case bp_step_resume: | |
e049a4b5 DJ |
4314 | case bp_watchpoint_scope: |
4315 | case bp_call_dummy: | |
4316 | case bp_shlib_event: | |
4317 | case bp_thread_event: | |
4318 | case bp_overlay_event: | |
0fd8e87f | 4319 | case bp_longjmp_master: |
e049a4b5 DJ |
4320 | loc->loc_type = bp_loc_software_breakpoint; |
4321 | break; | |
4322 | case bp_hardware_breakpoint: | |
4323 | loc->loc_type = bp_loc_hardware_breakpoint; | |
4324 | break; | |
4325 | case bp_hardware_watchpoint: | |
4326 | case bp_read_watchpoint: | |
4327 | case bp_access_watchpoint: | |
4328 | loc->loc_type = bp_loc_hardware_watchpoint; | |
4329 | break; | |
4330 | case bp_watchpoint: | |
ce78b96d | 4331 | case bp_catchpoint: |
e049a4b5 DJ |
4332 | loc->loc_type = bp_loc_other; |
4333 | break; | |
4334 | default: | |
e2e0b3e5 | 4335 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
4336 | } |
4337 | ||
7cc221ef DJ |
4338 | return loc; |
4339 | } | |
4340 | ||
fe3f5fa8 VP |
4341 | static void free_bp_location (struct bp_location *loc) |
4342 | { | |
4343 | if (loc->cond) | |
4344 | xfree (loc->cond); | |
74960c60 VP |
4345 | |
4346 | if (loc->function_name) | |
4347 | xfree (loc->function_name); | |
4348 | ||
fe3f5fa8 VP |
4349 | xfree (loc); |
4350 | } | |
4351 | ||
0d381245 VP |
4352 | /* Helper to set_raw_breakpoint below. Creates a breakpoint |
4353 | that has type BPTYPE and has no locations as yet. */ | |
c906108c | 4354 | |
c40e75cd | 4355 | static struct breakpoint * |
0d381245 | 4356 | set_raw_breakpoint_without_location (enum bptype bptype) |
c906108c | 4357 | { |
52f0bd74 | 4358 | struct breakpoint *b, *b1; |
c906108c SS |
4359 | |
4360 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4361 | memset (b, 0, sizeof (*b)); | |
2219d63c | 4362 | |
4d28f7a8 | 4363 | b->type = bptype; |
c906108c SS |
4364 | b->language = current_language->la_language; |
4365 | b->input_radix = input_radix; | |
4366 | b->thread = -1; | |
b5de0fa7 | 4367 | b->enable_state = bp_enabled; |
c906108c SS |
4368 | b->next = 0; |
4369 | b->silent = 0; | |
4370 | b->ignore_count = 0; | |
4371 | b->commands = NULL; | |
818dd999 | 4372 | b->frame_id = null_frame_id; |
3a3e9ee3 | 4373 | b->forked_inferior_pid = null_ptid; |
c906108c | 4374 | b->exec_pathname = NULL; |
3086aeae | 4375 | b->ops = NULL; |
0d381245 | 4376 | b->condition_not_parsed = 0; |
c906108c SS |
4377 | |
4378 | /* Add this breakpoint to the end of the chain | |
4379 | so that a list of breakpoints will come out in order | |
4380 | of increasing numbers. */ | |
4381 | ||
4382 | b1 = breakpoint_chain; | |
4383 | if (b1 == 0) | |
4384 | breakpoint_chain = b; | |
4385 | else | |
4386 | { | |
4387 | while (b1->next) | |
4388 | b1 = b1->next; | |
4389 | b1->next = b; | |
4390 | } | |
0d381245 VP |
4391 | return b; |
4392 | } | |
4393 | ||
4394 | /* Initialize loc->function_name. */ | |
4395 | static void | |
4396 | set_breakpoint_location_function (struct bp_location *loc) | |
4397 | { | |
4398 | if (loc->owner->type == bp_breakpoint | |
1042e4c0 SS |
4399 | || loc->owner->type == bp_hardware_breakpoint |
4400 | || loc->owner->type == bp_tracepoint) | |
0d381245 VP |
4401 | { |
4402 | find_pc_partial_function (loc->address, &(loc->function_name), | |
4403 | NULL, NULL); | |
4404 | if (loc->function_name) | |
4405 | loc->function_name = xstrdup (loc->function_name); | |
4406 | } | |
4407 | } | |
4408 | ||
4409 | /* set_raw_breakpoint is a low level routine for allocating and | |
4410 | partially initializing a breakpoint of type BPTYPE. The newly | |
4411 | created breakpoint's address, section, source file name, and line | |
4412 | number are provided by SAL. The newly created and partially | |
4413 | initialized breakpoint is added to the breakpoint chain and | |
4414 | is also returned as the value of this function. | |
4415 | ||
4416 | It is expected that the caller will complete the initialization of | |
4417 | the newly created breakpoint struct as well as output any status | |
4418 | information regarding the creation of a new breakpoint. In | |
4419 | particular, set_raw_breakpoint does NOT set the breakpoint | |
4420 | number! Care should be taken to not allow an error to occur | |
4421 | prior to completing the initialization of the breakpoint. If this | |
4422 | should happen, a bogus breakpoint will be left on the chain. */ | |
4423 | ||
4424 | struct breakpoint * | |
4425 | set_raw_breakpoint (struct symtab_and_line sal, enum bptype bptype) | |
4426 | { | |
4427 | struct breakpoint *b = set_raw_breakpoint_without_location (bptype); | |
4428 | CORE_ADDR adjusted_address; | |
4429 | ||
4430 | /* Adjust the breakpoint's address prior to allocating a location. | |
4431 | Once we call allocate_bp_location(), that mostly uninitialized | |
4432 | location will be placed on the location chain. Adjustment of the | |
8defab1a | 4433 | breakpoint may cause target_read_memory() to be called and we do |
0d381245 VP |
4434 | not want its scan of the location chain to find a breakpoint and |
4435 | location that's only been partially initialized. */ | |
39d61571 | 4436 | adjusted_address = adjust_breakpoint_address (sal.pc, b->type); |
0d381245 | 4437 | |
39d61571 | 4438 | b->loc = allocate_bp_location (b); |
0d381245 VP |
4439 | b->loc->requested_address = sal.pc; |
4440 | b->loc->address = adjusted_address; | |
4441 | ||
4442 | if (sal.symtab == NULL) | |
4443 | b->source_file = NULL; | |
4444 | else | |
1b36a34b | 4445 | b->source_file = xstrdup (sal.symtab->filename); |
0d381245 VP |
4446 | b->loc->section = sal.section; |
4447 | b->line_number = sal.line; | |
4448 | ||
4449 | set_breakpoint_location_function (b->loc); | |
c906108c | 4450 | |
c906108c SS |
4451 | breakpoints_changed (); |
4452 | ||
4453 | return b; | |
4454 | } | |
4455 | ||
c2c6d25f JM |
4456 | |
4457 | /* Note that the breakpoint object B describes a permanent breakpoint | |
4458 | instruction, hard-wired into the inferior's code. */ | |
4459 | void | |
4460 | make_breakpoint_permanent (struct breakpoint *b) | |
4461 | { | |
0d381245 | 4462 | struct bp_location *bl; |
b5de0fa7 | 4463 | b->enable_state = bp_permanent; |
c2c6d25f | 4464 | |
0d381245 VP |
4465 | /* By definition, permanent breakpoints are already present in the code. |
4466 | Mark all locations as inserted. For now, make_breakpoint_permanent | |
4467 | is called in just one place, so it's hard to say if it's reasonable | |
4468 | to have permanent breakpoint with multiple locations or not, | |
4469 | but it's easy to implmement. */ | |
4470 | for (bl = b->loc; bl; bl = bl->next) | |
4471 | bl->inserted = 1; | |
c2c6d25f JM |
4472 | } |
4473 | ||
53a5351d | 4474 | /* Call this routine when stepping and nexting to enable a breakpoint |
0fd8e87f | 4475 | if we do a longjmp() in THREAD. When we hit that breakpoint, call |
c906108c SS |
4476 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
4477 | ||
4478 | void | |
0fd8e87f | 4479 | set_longjmp_breakpoint (int thread) |
c906108c | 4480 | { |
0fd8e87f UW |
4481 | struct breakpoint *b, *temp; |
4482 | ||
4483 | /* To avoid having to rescan all objfile symbols at every step, | |
4484 | we maintain a list of continually-inserted but always disabled | |
4485 | longjmp "master" breakpoints. Here, we simply create momentary | |
4486 | clones of those and enable them for the requested thread. */ | |
4487 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4488 | if (b->type == bp_longjmp_master) | |
4489 | { | |
4490 | struct breakpoint *clone = clone_momentary_breakpoint (b); | |
4491 | clone->type = bp_longjmp; | |
4492 | clone->thread = thread; | |
4493 | } | |
c906108c SS |
4494 | } |
4495 | ||
611c83ae | 4496 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 4497 | void |
611c83ae | 4498 | delete_longjmp_breakpoint (int thread) |
c906108c | 4499 | { |
611c83ae | 4500 | struct breakpoint *b, *temp; |
c906108c | 4501 | |
611c83ae PA |
4502 | ALL_BREAKPOINTS_SAFE (b, temp) |
4503 | if (b->type == bp_longjmp) | |
4504 | { | |
4505 | if (b->thread == thread) | |
4506 | delete_breakpoint (b); | |
4507 | } | |
c906108c SS |
4508 | } |
4509 | ||
1900040c MS |
4510 | void |
4511 | enable_overlay_breakpoints (void) | |
4512 | { | |
52f0bd74 | 4513 | struct breakpoint *b; |
1900040c MS |
4514 | |
4515 | ALL_BREAKPOINTS (b) | |
4516 | if (b->type == bp_overlay_event) | |
4517 | { | |
4518 | b->enable_state = bp_enabled; | |
b60e7edf | 4519 | update_global_location_list (1); |
c02f5703 | 4520 | overlay_events_enabled = 1; |
1900040c MS |
4521 | } |
4522 | } | |
4523 | ||
4524 | void | |
4525 | disable_overlay_breakpoints (void) | |
4526 | { | |
52f0bd74 | 4527 | struct breakpoint *b; |
1900040c MS |
4528 | |
4529 | ALL_BREAKPOINTS (b) | |
4530 | if (b->type == bp_overlay_event) | |
4531 | { | |
4532 | b->enable_state = bp_disabled; | |
b60e7edf | 4533 | update_global_location_list (0); |
c02f5703 | 4534 | overlay_events_enabled = 0; |
1900040c MS |
4535 | } |
4536 | } | |
4537 | ||
c4093a6a | 4538 | struct breakpoint * |
fba45db2 | 4539 | create_thread_event_breakpoint (CORE_ADDR address) |
c4093a6a JM |
4540 | { |
4541 | struct breakpoint *b; | |
c4093a6a | 4542 | |
1900040c | 4543 | b = create_internal_breakpoint (address, bp_thread_event); |
c4093a6a | 4544 | |
b5de0fa7 | 4545 | b->enable_state = bp_enabled; |
c4093a6a | 4546 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
b435e160 | 4547 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); |
c4093a6a | 4548 | |
b60e7edf | 4549 | update_global_location_list_nothrow (1); |
74960c60 | 4550 | |
c4093a6a JM |
4551 | return b; |
4552 | } | |
4553 | ||
4554 | void | |
4555 | remove_thread_event_breakpoints (void) | |
4556 | { | |
4557 | struct breakpoint *b, *temp; | |
4558 | ||
4559 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4560 | if (b->type == bp_thread_event) | |
4561 | delete_breakpoint (b); | |
4562 | } | |
4563 | ||
0101ce28 JJ |
4564 | struct captured_parse_breakpoint_args |
4565 | { | |
4566 | char **arg_p; | |
4567 | struct symtabs_and_lines *sals_p; | |
4568 | char ***addr_string_p; | |
4569 | int *not_found_ptr; | |
4570 | }; | |
4571 | ||
4572 | struct lang_and_radix | |
4573 | { | |
4574 | enum language lang; | |
4575 | int radix; | |
4576 | }; | |
4577 | ||
0101ce28 | 4578 | |
cae688ec JJ |
4579 | void |
4580 | remove_solib_event_breakpoints (void) | |
4581 | { | |
4582 | struct breakpoint *b, *temp; | |
4583 | ||
4584 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4585 | if (b->type == bp_shlib_event) | |
4586 | delete_breakpoint (b); | |
4587 | } | |
4588 | ||
4589 | struct breakpoint * | |
4590 | create_solib_event_breakpoint (CORE_ADDR address) | |
4591 | { | |
4592 | struct breakpoint *b; | |
4593 | ||
4594 | b = create_internal_breakpoint (address, bp_shlib_event); | |
b60e7edf | 4595 | update_global_location_list_nothrow (1); |
cae688ec JJ |
4596 | return b; |
4597 | } | |
4598 | ||
4599 | /* Disable any breakpoints that are on code in shared libraries. Only | |
4600 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4601 | ||
4602 | void | |
cb851954 | 4603 | disable_breakpoints_in_shlibs (void) |
cae688ec | 4604 | { |
0d381245 | 4605 | struct bp_location *loc; |
cae688ec | 4606 | |
0d381245 | 4607 | ALL_BP_LOCATIONS (loc) |
cae688ec | 4608 | { |
0d381245 VP |
4609 | struct breakpoint *b = loc->owner; |
4610 | /* We apply the check to all breakpoints, including disabled | |
4611 | for those with loc->duplicate set. This is so that when breakpoint | |
4612 | becomes enabled, or the duplicate is removed, gdb will try to insert | |
4613 | all breakpoints. If we don't set shlib_disabled here, we'll try | |
4614 | to insert those breakpoints and fail. */ | |
1042e4c0 SS |
4615 | if (((b->type == bp_breakpoint) |
4616 | || (b->type == bp_hardware_breakpoint) | |
4617 | || (b->type == bp_tracepoint)) | |
0d381245 | 4618 | && !loc->shlib_disabled |
a77053c2 | 4619 | #ifdef PC_SOLIB |
0d381245 | 4620 | && PC_SOLIB (loc->address) |
a77053c2 | 4621 | #else |
f5c9a895 | 4622 | && solib_name_from_address (loc->address) |
a77053c2 MK |
4623 | #endif |
4624 | ) | |
0d381245 VP |
4625 | { |
4626 | loc->shlib_disabled = 1; | |
4627 | } | |
cae688ec JJ |
4628 | } |
4629 | } | |
4630 | ||
84acb35a JJ |
4631 | /* Disable any breakpoints that are in in an unloaded shared library. Only |
4632 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4633 | ||
75149521 | 4634 | static void |
84acb35a JJ |
4635 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
4636 | { | |
0d381245 | 4637 | struct bp_location *loc; |
84acb35a JJ |
4638 | int disabled_shlib_breaks = 0; |
4639 | ||
c86cf029 VP |
4640 | /* SunOS a.out shared libraries are always mapped, so do not |
4641 | disable breakpoints; they will only be reported as unloaded | |
4642 | through clear_solib when GDB discards its shared library | |
4643 | list. See clear_solib for more information. */ | |
4644 | if (exec_bfd != NULL | |
4645 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
4646 | return; | |
4647 | ||
0d381245 | 4648 | ALL_BP_LOCATIONS (loc) |
84acb35a | 4649 | { |
0d381245 VP |
4650 | struct breakpoint *b = loc->owner; |
4651 | if ((loc->loc_type == bp_loc_hardware_breakpoint | |
4652 | || loc->loc_type == bp_loc_software_breakpoint) | |
e2dd7057 PP |
4653 | && !loc->shlib_disabled |
4654 | && (b->type == bp_breakpoint || b->type == bp_hardware_breakpoint) | |
4655 | && solib_contains_address_p (solib, loc->address)) | |
84acb35a | 4656 | { |
e2dd7057 PP |
4657 | loc->shlib_disabled = 1; |
4658 | /* At this point, we cannot rely on remove_breakpoint | |
4659 | succeeding so we must mark the breakpoint as not inserted | |
4660 | to prevent future errors occurring in remove_breakpoints. */ | |
4661 | loc->inserted = 0; | |
4662 | if (!disabled_shlib_breaks) | |
4663 | { | |
4664 | target_terminal_ours_for_output (); | |
4665 | warning (_("Temporarily disabling breakpoints for unloaded shared library \"%s\""), | |
4666 | solib->so_name); | |
84acb35a | 4667 | } |
e2dd7057 | 4668 | disabled_shlib_breaks = 1; |
84acb35a JJ |
4669 | } |
4670 | } | |
84acb35a JJ |
4671 | } |
4672 | ||
ce78b96d JB |
4673 | /* FORK & VFORK catchpoints. */ |
4674 | ||
4675 | /* Implement the "insert" breakpoint_ops method for fork catchpoints. */ | |
4676 | ||
c906108c | 4677 | static void |
ce78b96d JB |
4678 | insert_catch_fork (struct breakpoint *b) |
4679 | { | |
4680 | target_insert_fork_catchpoint (PIDGET (inferior_ptid)); | |
4681 | } | |
4682 | ||
4683 | /* Implement the "remove" breakpoint_ops method for fork catchpoints. */ | |
4684 | ||
4685 | static int | |
4686 | remove_catch_fork (struct breakpoint *b) | |
4687 | { | |
4688 | return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); | |
4689 | } | |
4690 | ||
4691 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
4692 | catchpoints. */ | |
4693 | ||
4694 | static int | |
4695 | breakpoint_hit_catch_fork (struct breakpoint *b) | |
4696 | { | |
4697 | return inferior_has_forked (inferior_ptid, &b->forked_inferior_pid); | |
4698 | } | |
4699 | ||
4700 | /* Implement the "print_it" breakpoint_ops method for fork catchpoints. */ | |
4701 | ||
4702 | static enum print_stop_action | |
4703 | print_it_catch_fork (struct breakpoint *b) | |
4704 | { | |
4705 | annotate_catchpoint (b->number); | |
4706 | printf_filtered (_("\nCatchpoint %d (forked process %d), "), | |
4707 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
4708 | return PRINT_SRC_AND_LOC; | |
4709 | } | |
4710 | ||
4711 | /* Implement the "print_one" breakpoint_ops method for fork catchpoints. */ | |
4712 | ||
4713 | static void | |
4714 | print_one_catch_fork (struct breakpoint *b, CORE_ADDR *last_addr) | |
4715 | { | |
79a45b7d TT |
4716 | struct value_print_options opts; |
4717 | ||
4718 | get_user_print_options (&opts); | |
4719 | ||
ce78b96d JB |
4720 | /* Field 4, the address, is omitted (which makes the columns |
4721 | not line up too nicely with the headers, but the effect | |
4722 | is relatively readable). */ | |
79a45b7d | 4723 | if (opts.addressprint) |
ce78b96d JB |
4724 | ui_out_field_skip (uiout, "addr"); |
4725 | annotate_field (5); | |
4726 | ui_out_text (uiout, "fork"); | |
4727 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
4728 | { | |
4729 | ui_out_text (uiout, ", process "); | |
4730 | ui_out_field_int (uiout, "what", | |
4731 | ptid_get_pid (b->forked_inferior_pid)); | |
4732 | ui_out_spaces (uiout, 1); | |
4733 | } | |
4734 | } | |
4735 | ||
4736 | /* Implement the "print_mention" breakpoint_ops method for fork | |
4737 | catchpoints. */ | |
4738 | ||
4739 | static void | |
4740 | print_mention_catch_fork (struct breakpoint *b) | |
4741 | { | |
4742 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
4743 | } | |
4744 | ||
4745 | /* The breakpoint_ops structure to be used in fork catchpoints. */ | |
4746 | ||
4747 | static struct breakpoint_ops catch_fork_breakpoint_ops = | |
4748 | { | |
4749 | insert_catch_fork, | |
4750 | remove_catch_fork, | |
4751 | breakpoint_hit_catch_fork, | |
4752 | print_it_catch_fork, | |
4753 | print_one_catch_fork, | |
4754 | print_mention_catch_fork | |
4755 | }; | |
4756 | ||
4757 | /* Implement the "insert" breakpoint_ops method for vfork catchpoints. */ | |
4758 | ||
4759 | static void | |
4760 | insert_catch_vfork (struct breakpoint *b) | |
4761 | { | |
4762 | target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); | |
4763 | } | |
4764 | ||
4765 | /* Implement the "remove" breakpoint_ops method for vfork catchpoints. */ | |
4766 | ||
4767 | static int | |
4768 | remove_catch_vfork (struct breakpoint *b) | |
4769 | { | |
4770 | return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); | |
4771 | } | |
4772 | ||
4773 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
4774 | catchpoints. */ | |
4775 | ||
4776 | static int | |
4777 | breakpoint_hit_catch_vfork (struct breakpoint *b) | |
4778 | { | |
4779 | return inferior_has_vforked (inferior_ptid, &b->forked_inferior_pid); | |
4780 | } | |
4781 | ||
4782 | /* Implement the "print_it" breakpoint_ops method for vfork catchpoints. */ | |
4783 | ||
4784 | static enum print_stop_action | |
4785 | print_it_catch_vfork (struct breakpoint *b) | |
4786 | { | |
4787 | annotate_catchpoint (b->number); | |
4788 | printf_filtered (_("\nCatchpoint %d (vforked process %d), "), | |
4789 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
4790 | return PRINT_SRC_AND_LOC; | |
4791 | } | |
4792 | ||
4793 | /* Implement the "print_one" breakpoint_ops method for vfork catchpoints. */ | |
4794 | ||
4795 | static void | |
4796 | print_one_catch_vfork (struct breakpoint *b, CORE_ADDR *last_addr) | |
4797 | { | |
79a45b7d TT |
4798 | struct value_print_options opts; |
4799 | ||
4800 | get_user_print_options (&opts); | |
ce78b96d JB |
4801 | /* Field 4, the address, is omitted (which makes the columns |
4802 | not line up too nicely with the headers, but the effect | |
4803 | is relatively readable). */ | |
79a45b7d | 4804 | if (opts.addressprint) |
ce78b96d JB |
4805 | ui_out_field_skip (uiout, "addr"); |
4806 | annotate_field (5); | |
4807 | ui_out_text (uiout, "vfork"); | |
4808 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
4809 | { | |
4810 | ui_out_text (uiout, ", process "); | |
4811 | ui_out_field_int (uiout, "what", | |
4812 | ptid_get_pid (b->forked_inferior_pid)); | |
4813 | ui_out_spaces (uiout, 1); | |
4814 | } | |
4815 | } | |
4816 | ||
4817 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
4818 | catchpoints. */ | |
4819 | ||
4820 | static void | |
4821 | print_mention_catch_vfork (struct breakpoint *b) | |
4822 | { | |
4823 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
4824 | } | |
4825 | ||
4826 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ | |
4827 | ||
4828 | static struct breakpoint_ops catch_vfork_breakpoint_ops = | |
4829 | { | |
4830 | insert_catch_vfork, | |
4831 | remove_catch_vfork, | |
4832 | breakpoint_hit_catch_vfork, | |
4833 | print_it_catch_vfork, | |
4834 | print_one_catch_vfork, | |
4835 | print_mention_catch_vfork | |
4836 | }; | |
4837 | ||
4838 | /* Create a new breakpoint of the bp_catchpoint kind and return it. | |
4839 | ||
4840 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
4841 | If COND_STRING is not NULL, then store it in the breakpoint. | |
4842 | OPS, if not NULL, is the breakpoint_ops structure associated | |
4843 | to the catchpoint. */ | |
4844 | ||
4845 | static struct breakpoint * | |
4846 | create_catchpoint (int tempflag, char *cond_string, | |
4847 | struct breakpoint_ops *ops) | |
c906108c | 4848 | { |
c5aa993b JM |
4849 | struct symtab_and_line sal; |
4850 | struct breakpoint *b; | |
c5aa993b | 4851 | |
fe39c653 | 4852 | init_sal (&sal); |
c906108c SS |
4853 | sal.pc = 0; |
4854 | sal.symtab = NULL; | |
4855 | sal.line = 0; | |
c5aa993b | 4856 | |
ce78b96d | 4857 | b = set_raw_breakpoint (sal, bp_catchpoint); |
c906108c SS |
4858 | set_breakpoint_count (breakpoint_count + 1); |
4859 | b->number = breakpoint_count; | |
ce78b96d | 4860 | |
1b36a34b | 4861 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
ce78b96d | 4862 | b->thread = -1; |
c906108c | 4863 | b->addr_string = NULL; |
b5de0fa7 EZ |
4864 | b->enable_state = bp_enabled; |
4865 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
ce78b96d | 4866 | b->ops = ops; |
c5aa993b | 4867 | |
c906108c | 4868 | mention (b); |
ce78b96d | 4869 | update_global_location_list (1); |
c906108c | 4870 | |
ce78b96d | 4871 | return b; |
c906108c | 4872 | } |
c5aa993b | 4873 | |
9b70b993 | 4874 | static void |
ce78b96d JB |
4875 | create_fork_vfork_event_catchpoint (int tempflag, char *cond_string, |
4876 | struct breakpoint_ops *ops) | |
c906108c | 4877 | { |
ce78b96d JB |
4878 | struct breakpoint *b = create_catchpoint (tempflag, cond_string, ops); |
4879 | ||
4880 | /* FIXME: We should put this information in a breakpoint private data | |
4881 | area. */ | |
4882 | b->forked_inferior_pid = null_ptid; | |
c906108c SS |
4883 | } |
4884 | ||
fe798b75 JB |
4885 | /* Exec catchpoints. */ |
4886 | ||
9b70b993 | 4887 | static void |
fe798b75 | 4888 | insert_catch_exec (struct breakpoint *b) |
c906108c | 4889 | { |
fe798b75 JB |
4890 | target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
4891 | } | |
c906108c | 4892 | |
fe798b75 JB |
4893 | static int |
4894 | remove_catch_exec (struct breakpoint *b) | |
4895 | { | |
4896 | return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); | |
4897 | } | |
c906108c | 4898 | |
fe798b75 JB |
4899 | static int |
4900 | breakpoint_hit_catch_exec (struct breakpoint *b) | |
4901 | { | |
4902 | return inferior_has_execd (inferior_ptid, &b->exec_pathname); | |
4903 | } | |
c906108c | 4904 | |
fe798b75 JB |
4905 | static enum print_stop_action |
4906 | print_it_catch_exec (struct breakpoint *b) | |
4907 | { | |
4908 | annotate_catchpoint (b->number); | |
4909 | printf_filtered (_("\nCatchpoint %d (exec'd %s), "), b->number, | |
4910 | b->exec_pathname); | |
4911 | return PRINT_SRC_AND_LOC; | |
c906108c SS |
4912 | } |
4913 | ||
fe798b75 JB |
4914 | static void |
4915 | print_one_catch_exec (struct breakpoint *b, CORE_ADDR *last_addr) | |
4916 | { | |
4917 | struct value_print_options opts; | |
4918 | ||
4919 | get_user_print_options (&opts); | |
4920 | ||
4921 | /* Field 4, the address, is omitted (which makes the columns | |
4922 | not line up too nicely with the headers, but the effect | |
4923 | is relatively readable). */ | |
4924 | if (opts.addressprint) | |
4925 | ui_out_field_skip (uiout, "addr"); | |
4926 | annotate_field (5); | |
4927 | ui_out_text (uiout, "exec"); | |
4928 | if (b->exec_pathname != NULL) | |
4929 | { | |
4930 | ui_out_text (uiout, ", program \""); | |
4931 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
4932 | ui_out_text (uiout, "\" "); | |
4933 | } | |
4934 | } | |
4935 | ||
4936 | static void | |
4937 | print_mention_catch_exec (struct breakpoint *b) | |
4938 | { | |
4939 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
4940 | } | |
4941 | ||
4942 | static struct breakpoint_ops catch_exec_breakpoint_ops = | |
4943 | { | |
4944 | insert_catch_exec, | |
4945 | remove_catch_exec, | |
4946 | breakpoint_hit_catch_exec, | |
4947 | print_it_catch_exec, | |
4948 | print_one_catch_exec, | |
4949 | print_mention_catch_exec | |
4950 | }; | |
4951 | ||
c906108c | 4952 | static int |
fba45db2 | 4953 | hw_breakpoint_used_count (void) |
c906108c | 4954 | { |
52f0bd74 | 4955 | struct breakpoint *b; |
c906108c SS |
4956 | int i = 0; |
4957 | ||
4958 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4959 | { |
d6b74ac4 | 4960 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
c5aa993b JM |
4961 | i++; |
4962 | } | |
c906108c SS |
4963 | |
4964 | return i; | |
4965 | } | |
4966 | ||
4967 | static int | |
fba45db2 | 4968 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 4969 | { |
52f0bd74 | 4970 | struct breakpoint *b; |
c906108c SS |
4971 | int i = 0; |
4972 | ||
4973 | *other_type_used = 0; | |
4974 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4975 | { |
468d015d | 4976 | if (breakpoint_enabled (b)) |
c5aa993b JM |
4977 | { |
4978 | if (b->type == type) | |
4979 | i++; | |
059fb39f PM |
4980 | else if ((b->type == bp_hardware_watchpoint |
4981 | || b->type == bp_read_watchpoint | |
4982 | || b->type == bp_access_watchpoint)) | |
c5aa993b JM |
4983 | *other_type_used = 1; |
4984 | } | |
4985 | } | |
c906108c SS |
4986 | return i; |
4987 | } | |
4988 | ||
c906108c | 4989 | void |
fba45db2 | 4990 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 4991 | { |
c5aa993b | 4992 | struct breakpoint *b; |
c906108c SS |
4993 | |
4994 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4995 | { |
4996 | if (((b->type == bp_watchpoint) | |
4997 | || (b->type == bp_hardware_watchpoint) | |
4998 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 4999 | || (b->type == bp_access_watchpoint)) |
468d015d | 5000 | && breakpoint_enabled (b)) |
c5aa993b | 5001 | { |
b5de0fa7 | 5002 | b->enable_state = bp_call_disabled; |
b60e7edf | 5003 | update_global_location_list (0); |
c5aa993b JM |
5004 | } |
5005 | } | |
c906108c SS |
5006 | } |
5007 | ||
5008 | void | |
fba45db2 | 5009 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 5010 | { |
c5aa993b | 5011 | struct breakpoint *b; |
c906108c SS |
5012 | |
5013 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
5014 | { |
5015 | if (((b->type == bp_watchpoint) | |
5016 | || (b->type == bp_hardware_watchpoint) | |
5017 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 5018 | || (b->type == bp_access_watchpoint)) |
b5de0fa7 | 5019 | && (b->enable_state == bp_call_disabled)) |
c5aa993b | 5020 | { |
b5de0fa7 | 5021 | b->enable_state = bp_enabled; |
b60e7edf | 5022 | update_global_location_list (1); |
c5aa993b JM |
5023 | } |
5024 | } | |
c906108c SS |
5025 | } |
5026 | ||
5027 | ||
5028 | /* Set a breakpoint that will evaporate an end of command | |
5029 | at address specified by SAL. | |
5030 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
5031 | ||
5032 | struct breakpoint * | |
818dd999 | 5033 | set_momentary_breakpoint (struct symtab_and_line sal, struct frame_id frame_id, |
fba45db2 | 5034 | enum bptype type) |
c906108c | 5035 | { |
52f0bd74 | 5036 | struct breakpoint *b; |
edb3359d DJ |
5037 | |
5038 | /* If FRAME_ID is valid, it should be a real frame, not an inlined | |
5039 | one. */ | |
5040 | gdb_assert (!frame_id_inlined_p (frame_id)); | |
5041 | ||
4d28f7a8 | 5042 | b = set_raw_breakpoint (sal, type); |
b5de0fa7 EZ |
5043 | b->enable_state = bp_enabled; |
5044 | b->disposition = disp_donttouch; | |
818dd999 | 5045 | b->frame_id = frame_id; |
c906108c SS |
5046 | |
5047 | /* If we're debugging a multi-threaded program, then we | |
5048 | want momentary breakpoints to be active in only a | |
5049 | single thread of control. */ | |
39f77062 KB |
5050 | if (in_thread_list (inferior_ptid)) |
5051 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 5052 | |
b60e7edf | 5053 | update_global_location_list_nothrow (1); |
74960c60 | 5054 | |
c906108c SS |
5055 | return b; |
5056 | } | |
611c83ae | 5057 | |
e58b0e63 PA |
5058 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
5059 | ORIG is NULL. */ | |
5060 | ||
5061 | struct breakpoint * | |
5062 | clone_momentary_breakpoint (struct breakpoint *orig) | |
5063 | { | |
5064 | struct breakpoint *copy; | |
5065 | ||
5066 | /* If there's nothing to clone, then return nothing. */ | |
5067 | if (orig == NULL) | |
5068 | return NULL; | |
5069 | ||
5070 | copy = set_raw_breakpoint_without_location (orig->type); | |
5071 | copy->loc = allocate_bp_location (copy); | |
5072 | set_breakpoint_location_function (copy->loc); | |
5073 | ||
5074 | copy->loc->requested_address = orig->loc->requested_address; | |
5075 | copy->loc->address = orig->loc->address; | |
5076 | copy->loc->section = orig->loc->section; | |
5077 | ||
5078 | if (orig->source_file == NULL) | |
5079 | copy->source_file = NULL; | |
5080 | else | |
5081 | copy->source_file = xstrdup (orig->source_file); | |
5082 | ||
5083 | copy->line_number = orig->line_number; | |
5084 | copy->frame_id = orig->frame_id; | |
5085 | copy->thread = orig->thread; | |
5086 | ||
5087 | copy->enable_state = bp_enabled; | |
5088 | copy->disposition = disp_donttouch; | |
5089 | copy->number = internal_breakpoint_number--; | |
5090 | ||
5091 | update_global_location_list_nothrow (0); | |
5092 | return copy; | |
5093 | } | |
5094 | ||
611c83ae PA |
5095 | struct breakpoint * |
5096 | set_momentary_breakpoint_at_pc (CORE_ADDR pc, enum bptype type) | |
5097 | { | |
5098 | struct symtab_and_line sal; | |
5099 | ||
5100 | sal = find_pc_line (pc, 0); | |
5101 | sal.pc = pc; | |
5102 | sal.section = find_pc_overlay (pc); | |
5103 | sal.explicit_pc = 1; | |
5104 | ||
5105 | return set_momentary_breakpoint (sal, null_frame_id, type); | |
5106 | } | |
c906108c | 5107 | \f |
c5aa993b | 5108 | |
c906108c SS |
5109 | /* Tell the user we have just set a breakpoint B. */ |
5110 | ||
5111 | static void | |
fba45db2 | 5112 | mention (struct breakpoint *b) |
c906108c SS |
5113 | { |
5114 | int say_where = 0; | |
fa8a61dc | 5115 | struct cleanup *ui_out_chain; |
79a45b7d TT |
5116 | struct value_print_options opts; |
5117 | ||
5118 | get_user_print_options (&opts); | |
8b93c638 | 5119 | |
9a4105ab AC |
5120 | /* FIXME: This is misplaced; mention() is called by things (like |
5121 | hitting a watchpoint) other than breakpoint creation. It should | |
5122 | be possible to clean this up and at the same time replace the | |
7f4b89d1 | 5123 | random calls to breakpoint_changed with this hook. */ |
383f836e | 5124 | observer_notify_breakpoint_created (b->number); |
c906108c | 5125 | |
3086aeae DJ |
5126 | if (b->ops != NULL && b->ops->print_mention != NULL) |
5127 | b->ops->print_mention (b); | |
5128 | else | |
5129 | switch (b->type) | |
5130 | { | |
5131 | case bp_none: | |
a3f17187 | 5132 | printf_filtered (_("(apparently deleted?) Eventpoint %d: "), b->number); |
3086aeae DJ |
5133 | break; |
5134 | case bp_watchpoint: | |
5135 | ui_out_text (uiout, "Watchpoint "); | |
5136 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
5137 | ui_out_field_int (uiout, "number", b->number); | |
5138 | ui_out_text (uiout, ": "); | |
fa8a61dc | 5139 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
5140 | do_cleanups (ui_out_chain); |
5141 | break; | |
5142 | case bp_hardware_watchpoint: | |
5143 | ui_out_text (uiout, "Hardware watchpoint "); | |
5144 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
5145 | ui_out_field_int (uiout, "number", b->number); | |
5146 | ui_out_text (uiout, ": "); | |
fa8a61dc | 5147 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
5148 | do_cleanups (ui_out_chain); |
5149 | break; | |
5150 | case bp_read_watchpoint: | |
5151 | ui_out_text (uiout, "Hardware read watchpoint "); | |
5152 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
5153 | ui_out_field_int (uiout, "number", b->number); | |
5154 | ui_out_text (uiout, ": "); | |
fa8a61dc | 5155 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
5156 | do_cleanups (ui_out_chain); |
5157 | break; | |
5158 | case bp_access_watchpoint: | |
5159 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
5160 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
5161 | ui_out_field_int (uiout, "number", b->number); | |
5162 | ui_out_text (uiout, ": "); | |
fa8a61dc | 5163 | ui_out_field_string (uiout, "exp", b->exp_string); |
3086aeae DJ |
5164 | do_cleanups (ui_out_chain); |
5165 | break; | |
5166 | case bp_breakpoint: | |
5167 | if (ui_out_is_mi_like_p (uiout)) | |
5168 | { | |
5169 | say_where = 0; | |
5170 | break; | |
5171 | } | |
2cec12e5 AR |
5172 | if (b->disposition == disp_del) |
5173 | printf_filtered (_("Temporary breakpoint")); | |
5174 | else | |
5175 | printf_filtered (_("Breakpoint")); | |
5176 | printf_filtered (_(" %d"), b->number); | |
3086aeae DJ |
5177 | say_where = 1; |
5178 | break; | |
5179 | case bp_hardware_breakpoint: | |
5180 | if (ui_out_is_mi_like_p (uiout)) | |
5181 | { | |
5182 | say_where = 0; | |
5183 | break; | |
5184 | } | |
a3f17187 | 5185 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); |
3086aeae DJ |
5186 | say_where = 1; |
5187 | break; | |
1042e4c0 SS |
5188 | case bp_tracepoint: |
5189 | if (ui_out_is_mi_like_p (uiout)) | |
5190 | { | |
5191 | say_where = 0; | |
5192 | break; | |
5193 | } | |
5194 | printf_filtered (_("Tracepoint")); | |
5195 | printf_filtered (_(" %d"), b->number); | |
5196 | say_where = 1; | |
5197 | break; | |
3086aeae DJ |
5198 | |
5199 | case bp_until: | |
5200 | case bp_finish: | |
5201 | case bp_longjmp: | |
5202 | case bp_longjmp_resume: | |
5203 | case bp_step_resume: | |
3086aeae DJ |
5204 | case bp_call_dummy: |
5205 | case bp_watchpoint_scope: | |
5206 | case bp_shlib_event: | |
5207 | case bp_thread_event: | |
5208 | case bp_overlay_event: | |
0fd8e87f | 5209 | case bp_longjmp_master: |
3086aeae DJ |
5210 | break; |
5211 | } | |
c906108c | 5212 | |
c906108c SS |
5213 | if (say_where) |
5214 | { | |
a3f17187 AC |
5215 | /* i18n: cagney/2005-02-11: Below needs to be merged into a |
5216 | single string. */ | |
0d381245 | 5217 | if (b->loc == NULL) |
c906108c | 5218 | { |
a3f17187 | 5219 | printf_filtered (_(" (%s) pending."), b->addr_string); |
0101ce28 JJ |
5220 | } |
5221 | else | |
5222 | { | |
79a45b7d | 5223 | if (opts.addressprint || b->source_file == NULL) |
0101ce28 JJ |
5224 | { |
5225 | printf_filtered (" at "); | |
ed49a04f | 5226 | fputs_filtered (paddress (b->loc->address), gdb_stdout); |
0101ce28 JJ |
5227 | } |
5228 | if (b->source_file) | |
5229 | printf_filtered (": file %s, line %d.", | |
5230 | b->source_file, b->line_number); | |
0d381245 VP |
5231 | |
5232 | if (b->loc->next) | |
5233 | { | |
5234 | struct bp_location *loc = b->loc; | |
5235 | int n = 0; | |
5236 | for (; loc; loc = loc->next) | |
5237 | ++n; | |
5238 | printf_filtered (" (%d locations)", n); | |
5239 | } | |
5240 | ||
c906108c | 5241 | } |
c906108c | 5242 | } |
9dc5e2a9 | 5243 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 5244 | return; |
c906108c SS |
5245 | printf_filtered ("\n"); |
5246 | } | |
c906108c | 5247 | \f |
c5aa993b | 5248 | |
0d381245 | 5249 | static struct bp_location * |
39d61571 | 5250 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
5251 | const struct symtab_and_line *sal) |
5252 | { | |
5253 | struct bp_location *loc, **tmp; | |
5254 | ||
39d61571 | 5255 | loc = allocate_bp_location (b); |
0d381245 VP |
5256 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
5257 | ; | |
5258 | *tmp = loc; | |
5259 | loc->requested_address = sal->pc; | |
39d61571 | 5260 | loc->address = adjust_breakpoint_address (loc->requested_address, b->type); |
0d381245 VP |
5261 | loc->section = sal->section; |
5262 | ||
5263 | set_breakpoint_location_function (loc); | |
5264 | return loc; | |
5265 | } | |
514f746b AR |
5266 | \f |
5267 | ||
5268 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
5269 | return 0 otherwise. */ | |
5270 | ||
5271 | static int | |
5272 | bp_loc_is_permanent (struct bp_location *loc) | |
5273 | { | |
5274 | int len; | |
5275 | CORE_ADDR addr; | |
5276 | const gdb_byte *brk; | |
5277 | gdb_byte *target_mem; | |
939c61fa JK |
5278 | struct cleanup *cleanup; |
5279 | int retval = 0; | |
514f746b AR |
5280 | |
5281 | gdb_assert (loc != NULL); | |
5282 | ||
5283 | addr = loc->address; | |
5284 | brk = gdbarch_breakpoint_from_pc (current_gdbarch, &addr, &len); | |
5285 | ||
939c61fa JK |
5286 | /* Software breakpoints unsupported? */ |
5287 | if (brk == NULL) | |
5288 | return 0; | |
5289 | ||
514f746b AR |
5290 | target_mem = alloca (len); |
5291 | ||
939c61fa JK |
5292 | /* Enable the automatic memory restoration from breakpoints while |
5293 | we read the memory. Otherwise we could say about our temporary | |
5294 | breakpoints they are permanent. */ | |
5295 | cleanup = make_show_memory_breakpoints_cleanup (0); | |
5296 | ||
514f746b AR |
5297 | if (target_read_memory (loc->address, target_mem, len) == 0 |
5298 | && memcmp (target_mem, brk, len) == 0) | |
939c61fa | 5299 | retval = 1; |
514f746b | 5300 | |
939c61fa JK |
5301 | do_cleanups (cleanup); |
5302 | ||
5303 | return retval; | |
514f746b AR |
5304 | } |
5305 | ||
5306 | ||
c3f6f71d | 5307 | |
018d34a4 VP |
5308 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
5309 | as textual description of the location, and COND_STRING | |
db107f19 | 5310 | as condition expression. */ |
018d34a4 VP |
5311 | |
5312 | static void | |
0d381245 | 5313 | create_breakpoint (struct symtabs_and_lines sals, char *addr_string, |
018d34a4 VP |
5314 | char *cond_string, |
5315 | enum bptype type, enum bpdisp disposition, | |
4a306c9a | 5316 | int thread, int task, int ignore_count, |
41447f92 | 5317 | struct breakpoint_ops *ops, int from_tty, int enabled) |
018d34a4 | 5318 | { |
0d381245 VP |
5319 | struct breakpoint *b = NULL; |
5320 | int i; | |
018d34a4 VP |
5321 | |
5322 | if (type == bp_hardware_breakpoint) | |
5323 | { | |
5324 | int i = hw_breakpoint_used_count (); | |
5325 | int target_resources_ok = | |
d92524f1 | 5326 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
018d34a4 VP |
5327 | i + 1, 0); |
5328 | if (target_resources_ok == 0) | |
5329 | error (_("No hardware breakpoint support in the target.")); | |
5330 | else if (target_resources_ok < 0) | |
5331 | error (_("Hardware breakpoints used exceeds limit.")); | |
5332 | } | |
5333 | ||
0d381245 VP |
5334 | for (i = 0; i < sals.nelts; ++i) |
5335 | { | |
5336 | struct symtab_and_line sal = sals.sals[i]; | |
5337 | struct bp_location *loc; | |
5338 | ||
5339 | if (from_tty) | |
5340 | describe_other_breakpoints (sal.pc, sal.section, thread); | |
5341 | ||
5342 | if (i == 0) | |
5343 | { | |
5344 | b = set_raw_breakpoint (sal, type); | |
5345 | set_breakpoint_count (breakpoint_count + 1); | |
5346 | b->number = breakpoint_count; | |
5347 | b->thread = thread; | |
4a306c9a | 5348 | b->task = task; |
018d34a4 | 5349 | |
0d381245 VP |
5350 | b->cond_string = cond_string; |
5351 | b->ignore_count = ignore_count; | |
41447f92 | 5352 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 5353 | b->disposition = disposition; |
018d34a4 | 5354 | |
0d381245 VP |
5355 | loc = b->loc; |
5356 | } | |
5357 | else | |
018d34a4 | 5358 | { |
39d61571 | 5359 | loc = add_location_to_breakpoint (b, &sal); |
0d381245 VP |
5360 | } |
5361 | ||
514f746b AR |
5362 | if (bp_loc_is_permanent (loc)) |
5363 | make_breakpoint_permanent (b); | |
5364 | ||
0d381245 VP |
5365 | if (b->cond_string) |
5366 | { | |
5367 | char *arg = b->cond_string; | |
d32a6982 | 5368 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); |
0d381245 | 5369 | if (*arg) |
db107f19 | 5370 | error (_("Garbage %s follows condition"), arg); |
018d34a4 | 5371 | } |
0d381245 | 5372 | } |
018d34a4 VP |
5373 | |
5374 | if (addr_string) | |
5375 | b->addr_string = addr_string; | |
5376 | else | |
5377 | /* addr_string has to be used or breakpoint_re_set will delete | |
5378 | me. */ | |
5379 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); | |
5380 | ||
604133b5 | 5381 | b->ops = ops; |
018d34a4 VP |
5382 | mention (b); |
5383 | } | |
5384 | ||
ed0616c6 VP |
5385 | /* Remove element at INDEX_TO_REMOVE from SAL, shifting other |
5386 | elements to fill the void space. */ | |
2c0b251b PA |
5387 | static void |
5388 | remove_sal (struct symtabs_and_lines *sal, int index_to_remove) | |
ed0616c6 VP |
5389 | { |
5390 | int i = index_to_remove+1; | |
5391 | int last_index = sal->nelts-1; | |
5392 | ||
5393 | for (;i <= last_index; ++i) | |
5394 | sal->sals[i-1] = sal->sals[i]; | |
5395 | ||
5396 | --(sal->nelts); | |
5397 | } | |
5398 | ||
5399 | /* If appropriate, obtains all sals that correspond | |
5400 | to the same file and line as SAL. This is done | |
5401 | only if SAL does not have explicit PC and has | |
5402 | line and file information. If we got just a single | |
5403 | expanded sal, return the original. | |
5404 | ||
5405 | Otherwise, if SAL.explicit_line is not set, filter out | |
5406 | all sals for which the name of enclosing function | |
5407 | is different from SAL. This makes sure that if we have | |
5408 | breakpoint originally set in template instantiation, say | |
5409 | foo<int>(), we won't expand SAL to locations at the same | |
5410 | line in all existing instantiations of 'foo'. | |
5411 | ||
5412 | */ | |
2c0b251b | 5413 | static struct symtabs_and_lines |
ed0616c6 VP |
5414 | expand_line_sal_maybe (struct symtab_and_line sal) |
5415 | { | |
5416 | struct symtabs_and_lines expanded; | |
5417 | CORE_ADDR original_pc = sal.pc; | |
5418 | char *original_function = NULL; | |
5419 | int found; | |
5420 | int i; | |
5421 | ||
5422 | /* If we have explicit pc, don't expand. | |
5423 | If we have no line number, we can't expand. */ | |
5424 | if (sal.explicit_pc || sal.line == 0 || sal.symtab == NULL) | |
5425 | { | |
5426 | expanded.nelts = 1; | |
5427 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5428 | expanded.sals[0] = sal; | |
5429 | return expanded; | |
5430 | } | |
5431 | ||
5432 | sal.pc = 0; | |
5433 | find_pc_partial_function (original_pc, &original_function, NULL, NULL); | |
5434 | ||
5435 | expanded = expand_line_sal (sal); | |
5436 | if (expanded.nelts == 1) | |
5437 | { | |
5438 | /* We had one sal, we got one sal. Without futher | |
5439 | processing, just return the original sal. */ | |
5440 | xfree (expanded.sals); | |
5441 | expanded.nelts = 1; | |
5442 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5443 | sal.pc = original_pc; | |
5444 | expanded.sals[0] = sal; | |
5445 | return expanded; | |
5446 | } | |
5447 | ||
5448 | if (!sal.explicit_line) | |
5449 | { | |
5450 | CORE_ADDR func_addr, func_end; | |
5451 | for (i = 0; i < expanded.nelts; ++i) | |
5452 | { | |
5453 | CORE_ADDR pc = expanded.sals[i].pc; | |
5454 | char *this_function; | |
5455 | if (find_pc_partial_function (pc, &this_function, | |
5456 | &func_addr, &func_end)) | |
5457 | { | |
059fb39f PM |
5458 | if (this_function |
5459 | && strcmp (this_function, original_function) != 0) | |
ed0616c6 VP |
5460 | { |
5461 | remove_sal (&expanded, i); | |
5462 | --i; | |
5463 | } | |
5464 | else if (func_addr == pc) | |
5465 | { | |
5466 | /* We're at beginning of a function, and should | |
5467 | skip prologue. */ | |
5468 | struct symbol *sym = find_pc_function (pc); | |
5469 | if (sym) | |
5470 | expanded.sals[i] = find_function_start_sal (sym, 1); | |
5471 | else | |
d80b854b UW |
5472 | { |
5473 | /* Since find_pc_partial_function returned true, | |
5474 | we should really always find the section here. */ | |
5475 | struct obj_section *section = find_pc_section (pc); | |
5476 | if (section) | |
5477 | { | |
5478 | struct gdbarch *gdbarch | |
5479 | = get_objfile_arch (section->objfile); | |
5480 | expanded.sals[i].pc | |
5481 | = gdbarch_skip_prologue (gdbarch, pc); | |
5482 | } | |
5483 | } | |
ed0616c6 VP |
5484 | } |
5485 | } | |
5486 | } | |
5487 | } | |
3daf8fe5 JG |
5488 | else |
5489 | { | |
5490 | for (i = 0; i < expanded.nelts; ++i) | |
5491 | { | |
5492 | /* If this SAL corresponds to a breakpoint inserted using a | |
5493 | line number, then skip the function prologue if necessary. */ | |
5494 | skip_prologue_sal (&expanded.sals[i]); | |
5495 | } | |
5496 | } | |
ed0616c6 VP |
5497 | |
5498 | ||
5499 | if (expanded.nelts <= 1) | |
5500 | { | |
5501 | /* This is un ugly workaround. If we get zero | |
5502 | expanded sals then something is really wrong. | |
5503 | Fix that by returnign the original sal. */ | |
5504 | xfree (expanded.sals); | |
5505 | expanded.nelts = 1; | |
5506 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5507 | sal.pc = original_pc; | |
5508 | expanded.sals[0] = sal; | |
5509 | return expanded; | |
5510 | } | |
5511 | ||
5512 | if (original_pc) | |
5513 | { | |
5514 | found = 0; | |
5515 | for (i = 0; i < expanded.nelts; ++i) | |
5516 | if (expanded.sals[i].pc == original_pc) | |
5517 | { | |
5518 | found = 1; | |
5519 | break; | |
5520 | } | |
5521 | gdb_assert (found); | |
5522 | } | |
5523 | ||
5524 | return expanded; | |
5525 | } | |
5526 | ||
018d34a4 VP |
5527 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
5528 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
5529 | value. COND_STRING, if not NULL, specified the condition to be | |
5530 | used for all breakpoints. Essentially the only case where | |
5531 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
5532 | function. In that case, it's still not possible to specify | |
5533 | separate conditions for different overloaded functions, so | |
5534 | we take just a single condition string. | |
5535 | ||
c3f6f71d | 5536 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 5537 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
5538 | array contents). If the function fails (error() is called), the |
5539 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
5540 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
5541 | |
5542 | static void | |
c3f6f71d | 5543 | create_breakpoints (struct symtabs_and_lines sals, char **addr_string, |
018d34a4 | 5544 | char *cond_string, |
c3f6f71d | 5545 | enum bptype type, enum bpdisp disposition, |
4a306c9a | 5546 | int thread, int task, int ignore_count, |
41447f92 VP |
5547 | struct breakpoint_ops *ops, int from_tty, |
5548 | int enabled) | |
c906108c | 5549 | { |
018d34a4 VP |
5550 | int i; |
5551 | for (i = 0; i < sals.nelts; ++i) | |
c3f6f71d | 5552 | { |
ed0616c6 VP |
5553 | struct symtabs_and_lines expanded = |
5554 | expand_line_sal_maybe (sals.sals[i]); | |
0d381245 | 5555 | |
ed0616c6 | 5556 | create_breakpoint (expanded, addr_string[i], |
018d34a4 | 5557 | cond_string, type, disposition, |
4a306c9a | 5558 | thread, task, ignore_count, ops, from_tty, enabled); |
c3f6f71d | 5559 | } |
c3f6f71d | 5560 | } |
c906108c | 5561 | |
c3f6f71d JM |
5562 | /* Parse ARG which is assumed to be a SAL specification possibly |
5563 | followed by conditionals. On return, SALS contains an array of SAL | |
5564 | addresses found. ADDR_STRING contains a vector of (canonical) | |
5565 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 5566 | |
b9362cc7 | 5567 | static void |
c3f6f71d JM |
5568 | parse_breakpoint_sals (char **address, |
5569 | struct symtabs_and_lines *sals, | |
0101ce28 JJ |
5570 | char ***addr_string, |
5571 | int *not_found_ptr) | |
c3f6f71d JM |
5572 | { |
5573 | char *addr_start = *address; | |
5574 | *addr_string = NULL; | |
5575 | /* If no arg given, or if first arg is 'if ', use the default | |
5576 | breakpoint. */ | |
5577 | if ((*address) == NULL | |
5578 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
5579 | { |
5580 | if (default_breakpoint_valid) | |
5581 | { | |
c3f6f71d | 5582 | struct symtab_and_line sal; |
fe39c653 | 5583 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 5584 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
5585 | xmalloc (sizeof (struct symtab_and_line)); |
5586 | sal.pc = default_breakpoint_address; | |
5587 | sal.line = default_breakpoint_line; | |
5588 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 5589 | sal.section = find_pc_overlay (sal.pc); |
00903456 JK |
5590 | |
5591 | /* "break" without arguments is equivalent to "break *PC" where PC is | |
5592 | the default_breakpoint_address. So make sure to set | |
5593 | sal.explicit_pc to prevent GDB from trying to expand the list of | |
5594 | sals to include all other instances with the same symtab and line. | |
5595 | */ | |
5596 | sal.explicit_pc = 1; | |
5597 | ||
c3f6f71d JM |
5598 | sals->sals[0] = sal; |
5599 | sals->nelts = 1; | |
c906108c SS |
5600 | } |
5601 | else | |
8a3fe4f8 | 5602 | error (_("No default breakpoint address now.")); |
c906108c SS |
5603 | } |
5604 | else | |
5605 | { | |
c906108c | 5606 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
5607 | current_source_symtab (which is decode_line_1's default). This |
5608 | should produce the results we want almost all of the time while | |
1aeae86e AF |
5609 | leaving default_breakpoint_* alone. |
5610 | ObjC: However, don't match an Objective-C method name which | |
5611 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 5612 | |
c214a6fd | 5613 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 5614 | |
c906108c | 5615 | if (default_breakpoint_valid |
0378c332 | 5616 | && (!cursal.symtab |
1aeae86e AF |
5617 | || ((strchr ("+-", (*address)[0]) != NULL) |
5618 | && ((*address)[1] != '[')))) | |
c3f6f71d | 5619 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
0101ce28 JJ |
5620 | default_breakpoint_line, addr_string, |
5621 | not_found_ptr); | |
c906108c | 5622 | else |
0101ce28 JJ |
5623 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
5624 | addr_string, not_found_ptr); | |
c906108c | 5625 | } |
c3f6f71d JM |
5626 | /* For any SAL that didn't have a canonical string, fill one in. */ |
5627 | if (sals->nelts > 0 && *addr_string == NULL) | |
5628 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
5629 | if (addr_start != (*address)) | |
c906108c | 5630 | { |
c3f6f71d JM |
5631 | int i; |
5632 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 5633 | { |
c3f6f71d JM |
5634 | /* Add the string if not present. */ |
5635 | if ((*addr_string)[i] == NULL) | |
5636 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
5637 | } |
5638 | } | |
c3f6f71d | 5639 | } |
c906108c | 5640 | |
c906108c | 5641 | |
c3f6f71d JM |
5642 | /* Convert each SAL into a real PC. Verify that the PC can be |
5643 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 5644 | |
b9362cc7 | 5645 | static void |
c3f6f71d JM |
5646 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, |
5647 | char *address) | |
5648 | { | |
5649 | int i; | |
5650 | for (i = 0; i < sals->nelts; i++) | |
ee53e872 | 5651 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
5652 | } |
5653 | ||
05ff989b | 5654 | static void |
0101ce28 JJ |
5655 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) |
5656 | { | |
5657 | struct captured_parse_breakpoint_args *args = data; | |
5658 | ||
5659 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p, | |
5660 | args->not_found_ptr); | |
0101ce28 JJ |
5661 | } |
5662 | ||
018d34a4 VP |
5663 | /* Given TOK, a string specification of condition and thread, as |
5664 | accepted by the 'break' command, extract the condition | |
5665 | string and thread number and set *COND_STRING and *THREAD. | |
5666 | PC identifies the context at which the condition should be parsed. | |
5667 | If no condition is found, *COND_STRING is set to NULL. | |
5668 | If no thread is found, *THREAD is set to -1. */ | |
5669 | static void | |
5670 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
4a306c9a | 5671 | char **cond_string, int *thread, int *task) |
018d34a4 VP |
5672 | { |
5673 | *cond_string = NULL; | |
5674 | *thread = -1; | |
5675 | while (tok && *tok) | |
5676 | { | |
5677 | char *end_tok; | |
5678 | int toklen; | |
5679 | char *cond_start = NULL; | |
5680 | char *cond_end = NULL; | |
5681 | while (*tok == ' ' || *tok == '\t') | |
5682 | tok++; | |
5683 | ||
5684 | end_tok = tok; | |
5685 | ||
5686 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5687 | end_tok++; | |
5688 | ||
5689 | toklen = end_tok - tok; | |
5690 | ||
5691 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5692 | { | |
f7545552 TT |
5693 | struct expression *expr; |
5694 | ||
018d34a4 | 5695 | tok = cond_start = end_tok + 1; |
f7545552 TT |
5696 | expr = parse_exp_1 (&tok, block_for_pc (pc), 0); |
5697 | xfree (expr); | |
018d34a4 VP |
5698 | cond_end = tok; |
5699 | *cond_string = savestring (cond_start, | |
5700 | cond_end - cond_start); | |
5701 | } | |
5702 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5703 | { | |
5704 | char *tmptok; | |
5705 | ||
5706 | tok = end_tok + 1; | |
5707 | tmptok = tok; | |
5708 | *thread = strtol (tok, &tok, 0); | |
5709 | if (tok == tmptok) | |
5710 | error (_("Junk after thread keyword.")); | |
5711 | if (!valid_thread_id (*thread)) | |
5712 | error (_("Unknown thread %d."), *thread); | |
5713 | } | |
4a306c9a JB |
5714 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
5715 | { | |
5716 | char *tmptok; | |
5717 | ||
5718 | tok = end_tok + 1; | |
5719 | tmptok = tok; | |
5720 | *task = strtol (tok, &tok, 0); | |
5721 | if (tok == tmptok) | |
5722 | error (_("Junk after task keyword.")); | |
5723 | if (!valid_task_id (*task)) | |
5724 | error (_("Unknown task %d\n"), *task); | |
5725 | } | |
018d34a4 VP |
5726 | else |
5727 | error (_("Junk at end of arguments.")); | |
5728 | } | |
5729 | } | |
5730 | ||
72b2ff0e VP |
5731 | /* Set a breakpoint. This function is shared between |
5732 | CLI and MI functions for setting a breakpoint. | |
5733 | This function has two major modes of operations, | |
5734 | selected by the PARSE_CONDITION_AND_THREAD parameter. | |
5735 | If non-zero, the function will parse arg, extracting | |
5736 | breakpoint location, address and thread. Otherwise, | |
5737 | ARG is just the location of breakpoint, with condition | |
5738 | and thread specified by the COND_STRING and THREAD | |
5739 | parameters. */ | |
0101ce28 | 5740 | |
98deb0da | 5741 | static void |
72b2ff0e | 5742 | break_command_really (char *arg, char *cond_string, int thread, |
60c46647 | 5743 | int parse_condition_and_thread, |
1042e4c0 | 5744 | int tempflag, int hardwareflag, int traceflag, |
60c46647 VP |
5745 | int ignore_count, |
5746 | enum auto_boolean pending_break_support, | |
604133b5 | 5747 | struct breakpoint_ops *ops, |
41447f92 VP |
5748 | int from_tty, |
5749 | int enabled) | |
c3f6f71d | 5750 | { |
71fff37b | 5751 | struct gdb_exception e; |
c3f6f71d | 5752 | struct symtabs_and_lines sals; |
0101ce28 | 5753 | struct symtab_and_line pending_sal; |
0101ce28 JJ |
5754 | char *copy_arg; |
5755 | char *err_msg; | |
c3f6f71d JM |
5756 | char *addr_start = arg; |
5757 | char **addr_string; | |
5758 | struct cleanup *old_chain; | |
80c99de1 | 5759 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 5760 | struct captured_parse_breakpoint_args parse_args; |
05ff989b | 5761 | int i; |
0101ce28 | 5762 | int pending = 0; |
0101ce28 | 5763 | int not_found = 0; |
1042e4c0 | 5764 | enum bptype type_wanted; |
4a306c9a | 5765 | int task = 0; |
c3f6f71d | 5766 | |
c3f6f71d JM |
5767 | sals.sals = NULL; |
5768 | sals.nelts = 0; | |
5769 | addr_string = NULL; | |
c3f6f71d | 5770 | |
0101ce28 JJ |
5771 | parse_args.arg_p = &arg; |
5772 | parse_args.sals_p = &sals; | |
5773 | parse_args.addr_string_p = &addr_string; | |
5774 | parse_args.not_found_ptr = ¬_found; | |
5775 | ||
05ff989b AC |
5776 | e = catch_exception (uiout, do_captured_parse_breakpoint, |
5777 | &parse_args, RETURN_MASK_ALL); | |
0101ce28 JJ |
5778 | |
5779 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 5780 | switch (e.reason) |
0101ce28 | 5781 | { |
05ff989b | 5782 | case RETURN_QUIT: |
98deb0da | 5783 | throw_exception (e); |
05ff989b AC |
5784 | case RETURN_ERROR: |
5785 | switch (e.error) | |
0101ce28 | 5786 | { |
05ff989b | 5787 | case NOT_FOUND_ERROR: |
0101ce28 | 5788 | |
05ff989b AC |
5789 | /* If pending breakpoint support is turned off, throw |
5790 | error. */ | |
fa8d40ab JJ |
5791 | |
5792 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
5793 | throw_exception (e); |
5794 | ||
5795 | exception_print (gdb_stderr, e); | |
fa8d40ab | 5796 | |
05ff989b AC |
5797 | /* If pending breakpoint support is auto query and the user |
5798 | selects no, then simply return the error code. */ | |
059fb39f PM |
5799 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
5800 | && !nquery ("Make breakpoint pending on future shared library load? ")) | |
98deb0da | 5801 | return; |
fa8d40ab | 5802 | |
05ff989b AC |
5803 | /* At this point, either the user was queried about setting |
5804 | a pending breakpoint and selected yes, or pending | |
5805 | breakpoint behavior is on and thus a pending breakpoint | |
5806 | is defaulted on behalf of the user. */ | |
0101ce28 JJ |
5807 | copy_arg = xstrdup (addr_start); |
5808 | addr_string = ©_arg; | |
5809 | sals.nelts = 1; | |
5810 | sals.sals = &pending_sal; | |
5811 | pending_sal.pc = 0; | |
5812 | pending = 1; | |
05ff989b AC |
5813 | break; |
5814 | default: | |
98deb0da | 5815 | throw_exception (e); |
0101ce28 | 5816 | } |
05ff989b AC |
5817 | default: |
5818 | if (!sals.nelts) | |
98deb0da | 5819 | return; |
0101ce28 | 5820 | } |
c3f6f71d JM |
5821 | |
5822 | /* Create a chain of things that always need to be cleaned up. */ | |
5823 | old_chain = make_cleanup (null_cleanup, 0); | |
5824 | ||
0101ce28 JJ |
5825 | if (!pending) |
5826 | { | |
5827 | /* Make sure that all storage allocated to SALS gets freed. */ | |
5828 | make_cleanup (xfree, sals.sals); | |
5829 | ||
5830 | /* Cleanup the addr_string array but not its contents. */ | |
5831 | make_cleanup (xfree, addr_string); | |
5832 | } | |
c3f6f71d | 5833 | |
c3f6f71d JM |
5834 | /* ----------------------------- SNIP ----------------------------- |
5835 | Anything added to the cleanup chain beyond this point is assumed | |
5836 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
5837 | then the memory is not reclaimed. */ |
5838 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d JM |
5839 | |
5840 | /* Mark the contents of the addr_string for cleanup. These go on | |
80c99de1 | 5841 | the bkpt_chain and only occur if the breakpoint create fails. */ |
c3f6f71d JM |
5842 | for (i = 0; i < sals.nelts; i++) |
5843 | { | |
5844 | if (addr_string[i] != NULL) | |
b8c9b27d | 5845 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
5846 | } |
5847 | ||
5848 | /* Resolve all line numbers to PC's and verify that the addresses | |
5849 | are ok for the target. */ | |
0101ce28 JJ |
5850 | if (!pending) |
5851 | breakpoint_sals_to_pc (&sals, addr_start); | |
c3f6f71d | 5852 | |
1042e4c0 SS |
5853 | type_wanted = (traceflag |
5854 | ? bp_tracepoint | |
5855 | : (hardwareflag ? bp_hardware_breakpoint : bp_breakpoint)); | |
5856 | ||
c3f6f71d JM |
5857 | /* Verify that condition can be parsed, before setting any |
5858 | breakpoints. Allocate a separate condition expression for each | |
5859 | breakpoint. */ | |
0101ce28 | 5860 | if (!pending) |
c3f6f71d | 5861 | { |
2f069f6f | 5862 | if (parse_condition_and_thread) |
72b2ff0e VP |
5863 | { |
5864 | /* Here we only parse 'arg' to separate condition | |
5865 | from thread number, so parsing in context of first | |
5866 | sal is OK. When setting the breakpoint we'll | |
5867 | re-parse it in context of each sal. */ | |
5868 | cond_string = NULL; | |
5869 | thread = -1; | |
4a306c9a JB |
5870 | find_condition_and_thread (arg, sals.sals[0].pc, &cond_string, |
5871 | &thread, &task); | |
72b2ff0e VP |
5872 | if (cond_string) |
5873 | make_cleanup (xfree, cond_string); | |
5874 | } | |
2f069f6f | 5875 | else |
72b2ff0e VP |
5876 | { |
5877 | /* Create a private copy of condition string. */ | |
5878 | if (cond_string) | |
5879 | { | |
5880 | cond_string = xstrdup (cond_string); | |
5881 | make_cleanup (xfree, cond_string); | |
5882 | } | |
5883 | } | |
1042e4c0 | 5884 | create_breakpoints (sals, addr_string, cond_string, type_wanted, |
0101ce28 | 5885 | tempflag ? disp_del : disp_donttouch, |
4a306c9a | 5886 | thread, task, ignore_count, ops, from_tty, enabled); |
c906108c | 5887 | } |
0101ce28 JJ |
5888 | else |
5889 | { | |
fe3f5fa8 | 5890 | struct symtab_and_line sal = {0}; |
0101ce28 JJ |
5891 | struct breakpoint *b; |
5892 | ||
0101ce28 JJ |
5893 | make_cleanup (xfree, copy_arg); |
5894 | ||
1042e4c0 | 5895 | b = set_raw_breakpoint_without_location (type_wanted); |
0101ce28 JJ |
5896 | set_breakpoint_count (breakpoint_count + 1); |
5897 | b->number = breakpoint_count; | |
72b2ff0e | 5898 | b->thread = -1; |
018d34a4 | 5899 | b->addr_string = addr_string[0]; |
72b2ff0e | 5900 | b->cond_string = NULL; |
0101ce28 | 5901 | b->ignore_count = ignore_count; |
0101ce28 | 5902 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 5903 | b->condition_not_parsed = 1; |
604133b5 | 5904 | b->ops = ops; |
41447f92 | 5905 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
74960c60 | 5906 | |
0101ce28 JJ |
5907 | mention (b); |
5908 | } | |
5909 | ||
c3f6f71d | 5910 | if (sals.nelts > 1) |
8a3fe4f8 AC |
5911 | warning (_("Multiple breakpoints were set.\n" |
5912 | "Use the \"delete\" command to delete unwanted breakpoints.")); | |
80c99de1 PA |
5913 | /* That's it. Discard the cleanups for data inserted into the |
5914 | breakpoint. */ | |
5915 | discard_cleanups (bkpt_chain); | |
5916 | /* But cleanup everything else. */ | |
c3f6f71d | 5917 | do_cleanups (old_chain); |
217dc9e2 | 5918 | |
80c99de1 | 5919 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
217dc9e2 | 5920 | update_global_location_list (1); |
c3f6f71d | 5921 | } |
c906108c | 5922 | |
72b2ff0e VP |
5923 | /* Set a breakpoint. |
5924 | ARG is a string describing breakpoint address, | |
5925 | condition, and thread. | |
5926 | FLAG specifies if a breakpoint is hardware on, | |
5927 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
5928 | and BP_TEMPFLAG. */ | |
5929 | ||
98deb0da | 5930 | static void |
72b2ff0e | 5931 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 5932 | { |
72b2ff0e VP |
5933 | int hardwareflag = flag & BP_HARDWAREFLAG; |
5934 | int tempflag = flag & BP_TEMPFLAG; | |
c3f6f71d | 5935 | |
98deb0da VP |
5936 | break_command_really (arg, |
5937 | NULL, 0, 1 /* parse arg */, | |
1042e4c0 | 5938 | tempflag, hardwareflag, 0 /* traceflag */, |
98deb0da | 5939 | 0 /* Ignore count */, |
604133b5 AR |
5940 | pending_break_support, |
5941 | NULL /* breakpoint_ops */, | |
41447f92 VP |
5942 | from_tty, |
5943 | 1 /* enabled */); | |
c906108c SS |
5944 | } |
5945 | ||
72b2ff0e | 5946 | |
98deb0da VP |
5947 | void |
5948 | set_breakpoint (char *address, char *condition, | |
c3f6f71d | 5949 | int hardwareflag, int tempflag, |
ce43223b | 5950 | int thread, int ignore_count, |
41447f92 | 5951 | int pending, int enabled) |
c3f6f71d | 5952 | { |
98deb0da VP |
5953 | break_command_really (address, condition, thread, |
5954 | 0 /* condition and thread are valid. */, | |
1042e4c0 | 5955 | tempflag, hardwareflag, 0 /* traceflag */, |
98deb0da VP |
5956 | ignore_count, |
5957 | pending | |
5958 | ? AUTO_BOOLEAN_TRUE : AUTO_BOOLEAN_FALSE, | |
41447f92 | 5959 | NULL, 0, enabled); |
c3f6f71d JM |
5960 | } |
5961 | ||
6a048695 JB |
5962 | /* Adjust SAL to the first instruction past the function prologue. |
5963 | The end of the prologue is determined using the line table from | |
3daf8fe5 JG |
5964 | the debugging information. explicit_pc and explicit_line are |
5965 | not modified. | |
6a048695 JB |
5966 | |
5967 | If SAL is already past the prologue, then do nothing. */ | |
5968 | ||
5969 | static void | |
5970 | skip_prologue_sal (struct symtab_and_line *sal) | |
5971 | { | |
5972 | struct symbol *sym = find_pc_function (sal->pc); | |
5973 | struct symtab_and_line start_sal; | |
5974 | ||
5975 | if (sym == NULL) | |
5976 | return; | |
5977 | ||
5978 | start_sal = find_function_start_sal (sym, 1); | |
5979 | if (sal->pc < start_sal.pc) | |
3daf8fe5 JG |
5980 | { |
5981 | start_sal.explicit_line = sal->explicit_line; | |
5982 | start_sal.explicit_pc = sal->explicit_pc; | |
5983 | *sal = start_sal; | |
5984 | } | |
6a048695 | 5985 | } |
c3f6f71d | 5986 | |
c906108c SS |
5987 | /* Helper function for break_command_1 and disassemble_command. */ |
5988 | ||
5989 | void | |
fba45db2 | 5990 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
5991 | { |
5992 | CORE_ADDR pc; | |
5993 | ||
5994 | if (sal->pc == 0 && sal->symtab != NULL) | |
5995 | { | |
5996 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 5997 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
5998 | sal->line, sal->symtab->filename); |
5999 | sal->pc = pc; | |
6a048695 JB |
6000 | |
6001 | /* If this SAL corresponds to a breakpoint inserted using | |
6002 | a line number, then skip the function prologue if necessary. */ | |
6003 | if (sal->explicit_line) | |
56ef84b1 TT |
6004 | { |
6005 | /* Preserve the original line number. */ | |
6006 | int saved_line = sal->line; | |
6007 | skip_prologue_sal (sal); | |
6008 | sal->line = saved_line; | |
6009 | } | |
c906108c SS |
6010 | } |
6011 | ||
6012 | if (sal->section == 0 && sal->symtab != NULL) | |
6013 | { | |
6014 | struct blockvector *bv; | |
c5aa993b JM |
6015 | struct block *b; |
6016 | struct symbol *sym; | |
c906108c | 6017 | |
801e3a5b | 6018 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
6019 | if (bv != NULL) |
6020 | { | |
7f0df278 | 6021 | sym = block_linkage_function (b); |
c906108c SS |
6022 | if (sym != NULL) |
6023 | { | |
6024 | fixup_symbol_section (sym, sal->symtab->objfile); | |
714835d5 | 6025 | sal->section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
6026 | } |
6027 | else | |
6028 | { | |
6029 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
6030 | have to look harder. This case can be executed if we have |
6031 | line numbers but no functions (as can happen in assembly | |
6032 | source). */ | |
c906108c | 6033 | |
c5aa993b | 6034 | struct minimal_symbol *msym; |
c906108c SS |
6035 | |
6036 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
6037 | if (msym) | |
714835d5 | 6038 | sal->section = SYMBOL_OBJ_SECTION (msym); |
c906108c SS |
6039 | } |
6040 | } | |
6041 | } | |
6042 | } | |
6043 | ||
6044 | void | |
fba45db2 | 6045 | break_command (char *arg, int from_tty) |
c906108c | 6046 | { |
db107f19 | 6047 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
6048 | } |
6049 | ||
c906108c | 6050 | void |
fba45db2 | 6051 | tbreak_command (char *arg, int from_tty) |
c906108c | 6052 | { |
db107f19 | 6053 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
6054 | } |
6055 | ||
c906108c | 6056 | static void |
fba45db2 | 6057 | hbreak_command (char *arg, int from_tty) |
c906108c | 6058 | { |
db107f19 | 6059 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
6060 | } |
6061 | ||
6062 | static void | |
fba45db2 | 6063 | thbreak_command (char *arg, int from_tty) |
c906108c | 6064 | { |
db107f19 | 6065 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
6066 | } |
6067 | ||
6068 | static void | |
fba45db2 | 6069 | stop_command (char *arg, int from_tty) |
c906108c | 6070 | { |
a3f17187 | 6071 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 6072 | Usage: stop in <function | address>\n\ |
a3f17187 | 6073 | stop at <line>\n")); |
c906108c SS |
6074 | } |
6075 | ||
6076 | static void | |
fba45db2 | 6077 | stopin_command (char *arg, int from_tty) |
c906108c SS |
6078 | { |
6079 | int badInput = 0; | |
6080 | ||
c5aa993b | 6081 | if (arg == (char *) NULL) |
c906108c SS |
6082 | badInput = 1; |
6083 | else if (*arg != '*') | |
6084 | { | |
6085 | char *argptr = arg; | |
6086 | int hasColon = 0; | |
6087 | ||
53a5351d JM |
6088 | /* look for a ':'. If this is a line number specification, then |
6089 | say it is bad, otherwise, it should be an address or | |
6090 | function/method name */ | |
c906108c | 6091 | while (*argptr && !hasColon) |
c5aa993b JM |
6092 | { |
6093 | hasColon = (*argptr == ':'); | |
6094 | argptr++; | |
6095 | } | |
c906108c SS |
6096 | |
6097 | if (hasColon) | |
c5aa993b | 6098 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 6099 | else |
c5aa993b | 6100 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
6101 | } |
6102 | ||
6103 | if (badInput) | |
a3f17187 | 6104 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 6105 | else |
db107f19 | 6106 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
6107 | } |
6108 | ||
6109 | static void | |
fba45db2 | 6110 | stopat_command (char *arg, int from_tty) |
c906108c SS |
6111 | { |
6112 | int badInput = 0; | |
6113 | ||
c5aa993b | 6114 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
6115 | badInput = 1; |
6116 | else | |
6117 | { | |
6118 | char *argptr = arg; | |
6119 | int hasColon = 0; | |
6120 | ||
6121 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 6122 | it is probably a line number. */ |
c906108c | 6123 | while (*argptr && !hasColon) |
c5aa993b JM |
6124 | { |
6125 | hasColon = (*argptr == ':'); | |
6126 | argptr++; | |
6127 | } | |
c906108c SS |
6128 | |
6129 | if (hasColon) | |
c5aa993b | 6130 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 6131 | else |
c5aa993b | 6132 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
6133 | } |
6134 | ||
6135 | if (badInput) | |
a3f17187 | 6136 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 6137 | else |
db107f19 | 6138 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
6139 | } |
6140 | ||
53a5351d JM |
6141 | /* accessflag: hw_write: watch write, |
6142 | hw_read: watch read, | |
6143 | hw_access: watch access (read or write) */ | |
c906108c | 6144 | static void |
fba45db2 | 6145 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c | 6146 | { |
d983da9c | 6147 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c SS |
6148 | struct symtab_and_line sal; |
6149 | struct expression *exp; | |
6150 | struct block *exp_valid_block; | |
6151 | struct value *val, *mark; | |
6152 | struct frame_info *frame; | |
c906108c SS |
6153 | char *exp_start = NULL; |
6154 | char *exp_end = NULL; | |
37e4754d | 6155 | char *tok, *id_tok_start, *end_tok; |
c906108c SS |
6156 | int toklen; |
6157 | char *cond_start = NULL; | |
6158 | char *cond_end = NULL; | |
6159 | struct expression *cond = NULL; | |
6160 | int i, other_type_used, target_resources_ok = 0; | |
6161 | enum bptype bp_type; | |
6162 | int mem_cnt = 0; | |
37e4754d | 6163 | int thread = -1; |
c906108c | 6164 | |
fe39c653 | 6165 | init_sal (&sal); /* initialize to zeroes */ |
c5aa993b | 6166 | |
37e4754d LM |
6167 | /* Make sure that we actually have parameters to parse. */ |
6168 | if (arg != NULL && arg[0] != '\0') | |
6169 | { | |
6170 | toklen = strlen (arg); /* Size of argument list. */ | |
6171 | ||
6172 | /* Points tok to the end of the argument list. */ | |
6173 | tok = arg + toklen - 1; | |
6174 | ||
6175 | /* Go backwards in the parameters list. Skip the last parameter. | |
6176 | If we're expecting a 'thread <thread_num>' parameter, this should | |
6177 | be the thread identifier. */ | |
6178 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
6179 | tok--; | |
6180 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
6181 | tok--; | |
6182 | ||
6183 | /* Points end_tok to the beginning of the last token. */ | |
6184 | id_tok_start = tok + 1; | |
6185 | ||
6186 | /* Go backwards in the parameters list. Skip one more parameter. | |
6187 | If we're expecting a 'thread <thread_num>' parameter, we should | |
6188 | reach a "thread" token. */ | |
6189 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
6190 | tok--; | |
6191 | ||
6192 | end_tok = tok; | |
6193 | ||
6194 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
6195 | tok--; | |
6196 | ||
6197 | /* Move the pointer forward to skip the whitespace and | |
6198 | calculate the length of the token. */ | |
6199 | tok++; | |
6200 | toklen = end_tok - tok; | |
6201 | ||
6202 | if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
6203 | { | |
6204 | /* At this point we've found a "thread" token, which means | |
6205 | the user is trying to set a watchpoint that triggers | |
6206 | only in a specific thread. */ | |
6207 | char *endp; | |
6208 | ||
6209 | /* Extract the thread ID from the next token. */ | |
6210 | thread = strtol (id_tok_start, &endp, 0); | |
6211 | ||
6212 | /* Check if the user provided a valid numeric value for the | |
6213 | thread ID. */ | |
6214 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
6215 | error (_("Invalid thread ID specification %s."), id_tok_start); | |
6216 | ||
6217 | /* Check if the thread actually exists. */ | |
6218 | if (!valid_thread_id (thread)) | |
6219 | error (_("Unknown thread %d."), thread); | |
6220 | ||
6221 | /* Truncate the string and get rid of the thread <thread_num> | |
6222 | parameter before the parameter list is parsed by the | |
6223 | evaluate_expression() function. */ | |
6224 | *tok = '\0'; | |
6225 | } | |
6226 | } | |
6227 | ||
6228 | /* Parse the rest of the arguments. */ | |
c906108c SS |
6229 | innermost_block = NULL; |
6230 | exp_start = arg; | |
6231 | exp = parse_exp_1 (&arg, 0, 0); | |
6232 | exp_end = arg; | |
fa8a61dc TT |
6233 | /* Remove trailing whitespace from the expression before saving it. |
6234 | This makes the eventual display of the expression string a bit | |
6235 | prettier. */ | |
6236 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
6237 | --exp_end; | |
6238 | ||
c906108c SS |
6239 | exp_valid_block = innermost_block; |
6240 | mark = value_mark (); | |
fa4727a6 DJ |
6241 | fetch_watchpoint_value (exp, &val, NULL, NULL); |
6242 | if (val != NULL) | |
6243 | release_value (val); | |
c906108c SS |
6244 | |
6245 | tok = arg; | |
6246 | while (*tok == ' ' || *tok == '\t') | |
6247 | tok++; | |
6248 | end_tok = tok; | |
6249 | ||
6250 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
6251 | end_tok++; | |
6252 | ||
6253 | toklen = end_tok - tok; | |
6254 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
6255 | { | |
6256 | tok = cond_start = end_tok + 1; | |
6257 | cond = parse_exp_1 (&tok, 0, 0); | |
6258 | cond_end = tok; | |
6259 | } | |
6260 | if (*tok) | |
8a3fe4f8 | 6261 | error (_("Junk at end of command.")); |
c906108c | 6262 | |
53a5351d | 6263 | if (accessflag == hw_read) |
c5aa993b | 6264 | bp_type = bp_read_watchpoint; |
53a5351d | 6265 | else if (accessflag == hw_access) |
c5aa993b JM |
6266 | bp_type = bp_access_watchpoint; |
6267 | else | |
6268 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
6269 | |
6270 | mem_cnt = can_use_hardware_watchpoint (val); | |
6271 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
8a3fe4f8 | 6272 | error (_("Expression cannot be implemented with read/access watchpoint.")); |
c5aa993b JM |
6273 | if (mem_cnt != 0) |
6274 | { | |
6275 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d | 6276 | target_resources_ok = |
d92524f1 | 6277 | target_can_use_hardware_watchpoint (bp_type, i + mem_cnt, |
53a5351d | 6278 | other_type_used); |
c5aa993b | 6279 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 6280 | error (_("Target does not support this type of hardware watchpoint.")); |
53a5351d | 6281 | |
c5aa993b | 6282 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 6283 | error (_("Target can only support one kind of HW watchpoint at a time.")); |
c5aa993b | 6284 | } |
c906108c | 6285 | |
4d28f7a8 KB |
6286 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
6287 | watchpoint could not be set. */ | |
6288 | if (!mem_cnt || target_resources_ok <= 0) | |
6289 | bp_type = bp_watchpoint; | |
6290 | ||
d983da9c | 6291 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
6292 | |
6293 | /* If the expression is "local", then set up a "watchpoint scope" | |
6294 | breakpoint at the point where we've left the scope of the watchpoint | |
6295 | expression. Create the scope breakpoint before the watchpoint, so | |
6296 | that we will encounter it first in bpstat_stop_status. */ | |
edb3359d | 6297 | if (innermost_block && frame) |
d983da9c | 6298 | { |
edb3359d DJ |
6299 | if (frame_id_p (frame_unwind_caller_id (frame))) |
6300 | { | |
6301 | scope_breakpoint | |
6302 | = create_internal_breakpoint (frame_unwind_caller_pc (frame), | |
6303 | bp_watchpoint_scope); | |
d983da9c | 6304 | |
edb3359d | 6305 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 6306 | |
edb3359d DJ |
6307 | /* Automatically delete the breakpoint when it hits. */ |
6308 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 6309 | |
edb3359d DJ |
6310 | /* Only break in the proper frame (help with recursion). */ |
6311 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 6312 | |
edb3359d DJ |
6313 | /* Set the address at which we will stop. */ |
6314 | scope_breakpoint->loc->requested_address | |
6315 | = frame_unwind_caller_pc (frame); | |
6316 | scope_breakpoint->loc->address | |
6317 | = adjust_breakpoint_address (scope_breakpoint->loc->requested_address, | |
6318 | scope_breakpoint->type); | |
6319 | } | |
d983da9c DJ |
6320 | } |
6321 | ||
c906108c | 6322 | /* Now set up the breakpoint. */ |
4d28f7a8 | 6323 | b = set_raw_breakpoint (sal, bp_type); |
c906108c SS |
6324 | set_breakpoint_count (breakpoint_count + 1); |
6325 | b->number = breakpoint_count; | |
37e4754d | 6326 | b->thread = thread; |
b5de0fa7 | 6327 | b->disposition = disp_donttouch; |
c906108c SS |
6328 | b->exp = exp; |
6329 | b->exp_valid_block = exp_valid_block; | |
6330 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
6331 | b->val = val; | |
fa4727a6 | 6332 | b->val_valid = 1; |
511a6cd4 | 6333 | b->loc->cond = cond; |
c906108c SS |
6334 | if (cond_start) |
6335 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
6336 | else | |
6337 | b->cond_string = 0; | |
c5aa993b | 6338 | |
c906108c | 6339 | if (frame) |
d983da9c | 6340 | b->watchpoint_frame = get_frame_id (frame); |
c906108c | 6341 | else |
35a487f1 | 6342 | b->watchpoint_frame = null_frame_id; |
c906108c | 6343 | |
d983da9c | 6344 | if (scope_breakpoint != NULL) |
c906108c | 6345 | { |
d983da9c DJ |
6346 | /* The scope breakpoint is related to the watchpoint. We will |
6347 | need to act on them together. */ | |
6348 | b->related_breakpoint = scope_breakpoint; | |
6349 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 6350 | } |
d983da9c | 6351 | |
c906108c SS |
6352 | value_free_to_mark (mark); |
6353 | mention (b); | |
b60e7edf | 6354 | update_global_location_list (1); |
c906108c SS |
6355 | } |
6356 | ||
6357 | /* Return count of locations need to be watched and can be handled | |
6358 | in hardware. If the watchpoint can not be handled | |
6359 | in hardware return zero. */ | |
6360 | ||
c906108c | 6361 | static int |
fba45db2 | 6362 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
6363 | { |
6364 | int found_memory_cnt = 0; | |
2e70b7b9 | 6365 | struct value *head = v; |
c906108c SS |
6366 | |
6367 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 6368 | if (!can_use_hw_watchpoints) |
c906108c | 6369 | return 0; |
c5aa993b | 6370 | |
5c44784c JM |
6371 | /* Make sure that the value of the expression depends only upon |
6372 | memory contents, and values computed from them within GDB. If we | |
6373 | find any register references or function calls, we can't use a | |
6374 | hardware watchpoint. | |
6375 | ||
6376 | The idea here is that evaluating an expression generates a series | |
6377 | of values, one holding the value of every subexpression. (The | |
6378 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
6379 | a*b+c.) GDB's values hold almost enough information to establish | |
6380 | the criteria given above --- they identify memory lvalues, | |
6381 | register lvalues, computed values, etcetera. So we can evaluate | |
6382 | the expression, and then scan the chain of values that leaves | |
6383 | behind to decide whether we can detect any possible change to the | |
6384 | expression's final value using only hardware watchpoints. | |
6385 | ||
6386 | However, I don't think that the values returned by inferior | |
6387 | function calls are special in any way. So this function may not | |
6388 | notice that an expression involving an inferior function call | |
6389 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 6390 | for (; v; v = value_next (v)) |
c906108c | 6391 | { |
5c44784c | 6392 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 6393 | { |
d69fe07e | 6394 | if (value_lazy (v)) |
5c44784c JM |
6395 | /* A lazy memory lvalue is one that GDB never needed to fetch; |
6396 | we either just used its address (e.g., `a' in `a.b') or | |
6397 | we never needed it at all (e.g., `a' in `a,b'). */ | |
6398 | ; | |
53a5351d | 6399 | else |
5c44784c JM |
6400 | { |
6401 | /* Ahh, memory we actually used! Check if we can cover | |
6402 | it with hardware watchpoints. */ | |
df407dfe | 6403 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
6404 | |
6405 | /* We only watch structs and arrays if user asked for it | |
6406 | explicitly, never if they just happen to appear in a | |
6407 | middle of some value chain. */ | |
6408 | if (v == head | |
6409 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
6410 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
6411 | { | |
42ae5230 | 6412 | CORE_ADDR vaddr = value_address (v); |
df407dfe | 6413 | int len = TYPE_LENGTH (value_type (v)); |
2e70b7b9 | 6414 | |
d92524f1 | 6415 | if (!target_region_ok_for_hw_watchpoint (vaddr, len)) |
2e70b7b9 MS |
6416 | return 0; |
6417 | else | |
6418 | found_memory_cnt++; | |
6419 | } | |
5c44784c | 6420 | } |
c5aa993b | 6421 | } |
5086187c AC |
6422 | else if (VALUE_LVAL (v) != not_lval |
6423 | && deprecated_value_modifiable (v) == 0) | |
53a5351d | 6424 | return 0; /* ??? What does this represent? */ |
5086187c | 6425 | else if (VALUE_LVAL (v) == lval_register) |
53a5351d | 6426 | return 0; /* cannot watch a register with a HW watchpoint */ |
c906108c SS |
6427 | } |
6428 | ||
6429 | /* The expression itself looks suitable for using a hardware | |
6430 | watchpoint, but give the target machine a chance to reject it. */ | |
6431 | return found_memory_cnt; | |
6432 | } | |
6433 | ||
8b93c638 | 6434 | void |
fba45db2 | 6435 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6436 | { |
6437 | watch_command (arg, from_tty); | |
6438 | } | |
8926118c | 6439 | |
c5aa993b | 6440 | static void |
fba45db2 | 6441 | watch_command (char *arg, int from_tty) |
c906108c | 6442 | { |
53a5351d | 6443 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
6444 | } |
6445 | ||
8b93c638 | 6446 | void |
fba45db2 | 6447 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6448 | { |
6449 | rwatch_command (arg, from_tty); | |
6450 | } | |
8926118c | 6451 | |
c5aa993b | 6452 | static void |
fba45db2 | 6453 | rwatch_command (char *arg, int from_tty) |
c906108c | 6454 | { |
53a5351d | 6455 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
6456 | } |
6457 | ||
8b93c638 | 6458 | void |
fba45db2 | 6459 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6460 | { |
6461 | awatch_command (arg, from_tty); | |
6462 | } | |
8926118c | 6463 | |
c5aa993b | 6464 | static void |
fba45db2 | 6465 | awatch_command (char *arg, int from_tty) |
c906108c | 6466 | { |
53a5351d | 6467 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 6468 | } |
c906108c | 6469 | \f |
c5aa993b | 6470 | |
43ff13b4 | 6471 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
6472 | because it uses the mechanisms of breakpoints. */ |
6473 | ||
bfec99b2 PA |
6474 | struct until_break_command_continuation_args |
6475 | { | |
6476 | struct breakpoint *breakpoint; | |
6477 | struct breakpoint *breakpoint2; | |
6478 | }; | |
6479 | ||
43ff13b4 JM |
6480 | /* This function is called by fetch_inferior_event via the |
6481 | cmd_continuation pointer, to complete the until command. It takes | |
6482 | care of cleaning up the temporary breakpoints set up by the until | |
6483 | command. */ | |
c2c6d25f | 6484 | static void |
604ead4a | 6485 | until_break_command_continuation (void *arg) |
43ff13b4 | 6486 | { |
bfec99b2 PA |
6487 | struct until_break_command_continuation_args *a = arg; |
6488 | ||
6489 | delete_breakpoint (a->breakpoint); | |
6490 | if (a->breakpoint2) | |
6491 | delete_breakpoint (a->breakpoint2); | |
43ff13b4 JM |
6492 | } |
6493 | ||
c906108c | 6494 | void |
ae66c1fc | 6495 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
6496 | { |
6497 | struct symtabs_and_lines sals; | |
6498 | struct symtab_and_line sal; | |
206415a3 | 6499 | struct frame_info *frame = get_selected_frame (NULL); |
c906108c | 6500 | struct breakpoint *breakpoint; |
f107f563 | 6501 | struct breakpoint *breakpoint2 = NULL; |
c906108c SS |
6502 | struct cleanup *old_chain; |
6503 | ||
6504 | clear_proceed_status (); | |
6505 | ||
6506 | /* Set a breakpoint where the user wants it and at return from | |
6507 | this function */ | |
c5aa993b | 6508 | |
c906108c SS |
6509 | if (default_breakpoint_valid) |
6510 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 6511 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 6512 | else |
53a5351d | 6513 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 6514 | 0, (char ***) NULL, NULL); |
c5aa993b | 6515 | |
c906108c | 6516 | if (sals.nelts != 1) |
8a3fe4f8 | 6517 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 6518 | |
c906108c | 6519 | sal = sals.sals[0]; |
b8c9b27d | 6520 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 6521 | |
c906108c | 6522 | if (*arg) |
8a3fe4f8 | 6523 | error (_("Junk at end of arguments.")); |
c5aa993b | 6524 | |
c906108c | 6525 | resolve_sal_pc (&sal); |
c5aa993b | 6526 | |
ae66c1fc EZ |
6527 | if (anywhere) |
6528 | /* If the user told us to continue until a specified location, | |
6529 | we don't specify a frame at which we need to stop. */ | |
6530 | breakpoint = set_momentary_breakpoint (sal, null_frame_id, bp_until); | |
6531 | else | |
edb3359d | 6532 | /* Otherwise, specify the selected frame, because we want to stop only |
ae66c1fc | 6533 | at the very same frame. */ |
edb3359d | 6534 | breakpoint = set_momentary_breakpoint (sal, get_stack_frame_id (frame), |
ae66c1fc | 6535 | bp_until); |
c5aa993b | 6536 | |
f107f563 | 6537 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
c906108c | 6538 | |
ae66c1fc EZ |
6539 | /* Keep within the current frame, or in frames called by the current |
6540 | one. */ | |
edb3359d DJ |
6541 | |
6542 | if (frame_id_p (frame_unwind_caller_id (frame))) | |
c906108c | 6543 | { |
edb3359d DJ |
6544 | sal = find_pc_line (frame_unwind_caller_pc (frame), 0); |
6545 | sal.pc = frame_unwind_caller_pc (frame); | |
6546 | breakpoint2 = set_momentary_breakpoint (sal, | |
6547 | frame_unwind_caller_id (frame), | |
f107f563 VP |
6548 | bp_until); |
6549 | make_cleanup_delete_breakpoint (breakpoint2); | |
c906108c | 6550 | } |
c5aa993b | 6551 | |
c906108c | 6552 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
f107f563 VP |
6553 | |
6554 | /* If we are running asynchronously, and proceed call above has actually | |
6555 | managed to start the target, arrange for breakpoints to be | |
6556 | deleted when the target stops. Otherwise, we're already stopped and | |
6557 | delete breakpoints via cleanup chain. */ | |
6558 | ||
8ea051c5 | 6559 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 6560 | { |
bfec99b2 PA |
6561 | struct until_break_command_continuation_args *args; |
6562 | args = xmalloc (sizeof (*args)); | |
f107f563 | 6563 | |
bfec99b2 PA |
6564 | args->breakpoint = breakpoint; |
6565 | args->breakpoint2 = breakpoint2; | |
f107f563 VP |
6566 | |
6567 | discard_cleanups (old_chain); | |
95e54da7 PA |
6568 | add_continuation (inferior_thread (), |
6569 | until_break_command_continuation, args, | |
604ead4a | 6570 | xfree); |
f107f563 VP |
6571 | } |
6572 | else | |
c5aa993b | 6573 | do_cleanups (old_chain); |
c906108c | 6574 | } |
ae66c1fc | 6575 | |
c906108c | 6576 | static void |
fba45db2 | 6577 | ep_skip_leading_whitespace (char **s) |
c906108c | 6578 | { |
c5aa993b JM |
6579 | if ((s == NULL) || (*s == NULL)) |
6580 | return; | |
6581 | while (isspace (**s)) | |
6582 | *s += 1; | |
c906108c | 6583 | } |
c5aa993b | 6584 | |
c906108c SS |
6585 | /* This function attempts to parse an optional "if <cond>" clause |
6586 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 6587 | |
c906108c SS |
6588 | Else, it returns a pointer to the condition string. (It does not |
6589 | attempt to evaluate the string against a particular block.) And, | |
6590 | it updates arg to point to the first character following the parsed | |
6591 | if clause in the arg string. */ | |
53a5351d | 6592 | |
c906108c | 6593 | static char * |
fba45db2 | 6594 | ep_parse_optional_if_clause (char **arg) |
c906108c | 6595 | { |
c5aa993b JM |
6596 | char *cond_string; |
6597 | ||
6598 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 6599 | return NULL; |
c5aa993b | 6600 | |
c906108c SS |
6601 | /* Skip the "if" keyword. */ |
6602 | (*arg) += 2; | |
c5aa993b | 6603 | |
c906108c SS |
6604 | /* Skip any extra leading whitespace, and record the start of the |
6605 | condition string. */ | |
6606 | ep_skip_leading_whitespace (arg); | |
6607 | cond_string = *arg; | |
c5aa993b | 6608 | |
c906108c SS |
6609 | /* Assume that the condition occupies the remainder of the arg string. */ |
6610 | (*arg) += strlen (cond_string); | |
c5aa993b | 6611 | |
c906108c SS |
6612 | return cond_string; |
6613 | } | |
c5aa993b | 6614 | |
c906108c SS |
6615 | /* This function attempts to parse an optional filename from the arg |
6616 | string. If one is not found, it returns NULL. | |
c5aa993b | 6617 | |
c906108c SS |
6618 | Else, it returns a pointer to the parsed filename. (This function |
6619 | makes no attempt to verify that a file of that name exists, or is | |
6620 | accessible.) And, it updates arg to point to the first character | |
6621 | following the parsed filename in the arg string. | |
c5aa993b | 6622 | |
c906108c SS |
6623 | Note that clients needing to preserve the returned filename for |
6624 | future access should copy it to their own buffers. */ | |
6625 | static char * | |
fba45db2 | 6626 | ep_parse_optional_filename (char **arg) |
c906108c | 6627 | { |
c5aa993b JM |
6628 | static char filename[1024]; |
6629 | char *arg_p = *arg; | |
6630 | int i; | |
6631 | char c; | |
6632 | ||
c906108c SS |
6633 | if ((*arg_p == '\0') || isspace (*arg_p)) |
6634 | return NULL; | |
c5aa993b JM |
6635 | |
6636 | for (i = 0;; i++) | |
c906108c SS |
6637 | { |
6638 | c = *arg_p; | |
6639 | if (isspace (c)) | |
c5aa993b | 6640 | c = '\0'; |
c906108c SS |
6641 | filename[i] = c; |
6642 | if (c == '\0') | |
c5aa993b | 6643 | break; |
c906108c SS |
6644 | arg_p++; |
6645 | } | |
6646 | *arg = arg_p; | |
c5aa993b | 6647 | |
c906108c SS |
6648 | return filename; |
6649 | } | |
c5aa993b | 6650 | |
c906108c SS |
6651 | /* Commands to deal with catching events, such as signals, exceptions, |
6652 | process start/exit, etc. */ | |
c5aa993b JM |
6653 | |
6654 | typedef enum | |
6655 | { | |
44feb3ce TT |
6656 | catch_fork_temporary, catch_vfork_temporary, |
6657 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
6658 | } |
6659 | catch_fork_kind; | |
6660 | ||
c906108c | 6661 | static void |
44feb3ce | 6662 | catch_fork_command_1 (char *arg, int from_tty, struct cmd_list_element *command) |
c906108c | 6663 | { |
c5aa993b | 6664 | char *cond_string = NULL; |
44feb3ce TT |
6665 | catch_fork_kind fork_kind; |
6666 | int tempflag; | |
6667 | ||
6668 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
6669 | tempflag = (fork_kind == catch_fork_temporary | |
6670 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 6671 | |
44feb3ce TT |
6672 | if (!arg) |
6673 | arg = ""; | |
c906108c | 6674 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6675 | |
c906108c | 6676 | /* The allowed syntax is: |
c5aa993b JM |
6677 | catch [v]fork |
6678 | catch [v]fork if <cond> | |
6679 | ||
c906108c SS |
6680 | First, check if there's an if clause. */ |
6681 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6682 | |
c906108c | 6683 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6684 | error (_("Junk at end of arguments.")); |
c5aa993b | 6685 | |
c906108c SS |
6686 | /* If this target supports it, create a fork or vfork catchpoint |
6687 | and enable reporting of such events. */ | |
c5aa993b JM |
6688 | switch (fork_kind) |
6689 | { | |
44feb3ce TT |
6690 | case catch_fork_temporary: |
6691 | case catch_fork_permanent: | |
ce78b96d JB |
6692 | create_fork_vfork_event_catchpoint (tempflag, cond_string, |
6693 | &catch_fork_breakpoint_ops); | |
c906108c | 6694 | break; |
44feb3ce TT |
6695 | case catch_vfork_temporary: |
6696 | case catch_vfork_permanent: | |
ce78b96d JB |
6697 | create_fork_vfork_event_catchpoint (tempflag, cond_string, |
6698 | &catch_vfork_breakpoint_ops); | |
c906108c | 6699 | break; |
c5aa993b | 6700 | default: |
8a3fe4f8 | 6701 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 6702 | break; |
c5aa993b | 6703 | } |
c906108c SS |
6704 | } |
6705 | ||
6706 | static void | |
44feb3ce | 6707 | catch_exec_command_1 (char *arg, int from_tty, struct cmd_list_element *command) |
c906108c | 6708 | { |
44feb3ce | 6709 | int tempflag; |
c5aa993b | 6710 | char *cond_string = NULL; |
c906108c | 6711 | |
44feb3ce TT |
6712 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
6713 | ||
6714 | if (!arg) | |
6715 | arg = ""; | |
c906108c SS |
6716 | ep_skip_leading_whitespace (&arg); |
6717 | ||
6718 | /* The allowed syntax is: | |
c5aa993b JM |
6719 | catch exec |
6720 | catch exec if <cond> | |
c906108c SS |
6721 | |
6722 | First, check if there's an if clause. */ | |
6723 | cond_string = ep_parse_optional_if_clause (&arg); | |
6724 | ||
6725 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6726 | error (_("Junk at end of arguments.")); |
c906108c SS |
6727 | |
6728 | /* If this target supports it, create an exec catchpoint | |
6729 | and enable reporting of such events. */ | |
fe798b75 | 6730 | create_catchpoint (tempflag, cond_string, &catch_exec_breakpoint_ops); |
c906108c | 6731 | } |
c5aa993b | 6732 | |
3086aeae DJ |
6733 | static enum print_stop_action |
6734 | print_exception_catchpoint (struct breakpoint *b) | |
6735 | { | |
ade92717 | 6736 | int bp_temp, bp_throw; |
3086aeae | 6737 | |
ade92717 | 6738 | annotate_catchpoint (b->number); |
3086aeae | 6739 | |
ade92717 AR |
6740 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
6741 | if (b->loc->address != b->loc->requested_address) | |
6742 | breakpoint_adjustment_warning (b->loc->requested_address, | |
6743 | b->loc->address, | |
6744 | b->number, 1); | |
df2b6d2d | 6745 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
6746 | ui_out_text (uiout, |
6747 | bp_temp ? "Temporary catchpoint " | |
6748 | : "Catchpoint "); | |
6749 | if (!ui_out_is_mi_like_p (uiout)) | |
6750 | ui_out_field_int (uiout, "bkptno", b->number); | |
6751 | ui_out_text (uiout, | |
c0b37c48 AR |
6752 | bp_throw ? " (exception thrown), " |
6753 | : " (exception caught), "); | |
ade92717 AR |
6754 | if (ui_out_is_mi_like_p (uiout)) |
6755 | { | |
6756 | ui_out_field_string (uiout, "reason", | |
6757 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
6758 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
6759 | ui_out_field_int (uiout, "bkptno", b->number); | |
6760 | } | |
3086aeae DJ |
6761 | return PRINT_SRC_AND_LOC; |
6762 | } | |
6763 | ||
6764 | static void | |
6765 | print_one_exception_catchpoint (struct breakpoint *b, CORE_ADDR *last_addr) | |
6766 | { | |
79a45b7d TT |
6767 | struct value_print_options opts; |
6768 | get_user_print_options (&opts); | |
6769 | if (opts.addressprint) | |
3086aeae DJ |
6770 | { |
6771 | annotate_field (4); | |
604133b5 AR |
6772 | if (b->loc == NULL || b->loc->shlib_disabled) |
6773 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
6774 | else | |
6775 | ui_out_field_core_addr (uiout, "addr", b->loc->address); | |
3086aeae DJ |
6776 | } |
6777 | annotate_field (5); | |
604133b5 AR |
6778 | if (b->loc) |
6779 | *last_addr = b->loc->address; | |
3086aeae DJ |
6780 | if (strstr (b->addr_string, "throw") != NULL) |
6781 | ui_out_field_string (uiout, "what", "exception throw"); | |
6782 | else | |
6783 | ui_out_field_string (uiout, "what", "exception catch"); | |
6784 | } | |
6785 | ||
6786 | static void | |
6787 | print_mention_exception_catchpoint (struct breakpoint *b) | |
6788 | { | |
ade92717 AR |
6789 | int bp_temp; |
6790 | int bp_throw; | |
6791 | ||
df2b6d2d | 6792 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
6793 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
6794 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
6795 | : _("Catchpoint ")); | |
6796 | ui_out_field_int (uiout, "bkptno", b->number); | |
6797 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
6798 | : _(" (catch)")); | |
3086aeae DJ |
6799 | } |
6800 | ||
6801 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { | |
ce78b96d JB |
6802 | NULL, /* insert */ |
6803 | NULL, /* remove */ | |
6804 | NULL, /* breakpoint_hit */ | |
3086aeae DJ |
6805 | print_exception_catchpoint, |
6806 | print_one_exception_catchpoint, | |
6807 | print_mention_exception_catchpoint | |
6808 | }; | |
6809 | ||
6810 | static int | |
6811 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
6812 | enum exception_event_kind ex_event, int from_tty) | |
6813 | { | |
604133b5 AR |
6814 | char *trigger_func_name; |
6815 | ||
3086aeae | 6816 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 6817 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 6818 | else |
604133b5 | 6819 | trigger_func_name = "__cxa_throw"; |
3086aeae | 6820 | |
604133b5 AR |
6821 | break_command_really (trigger_func_name, cond_string, -1, |
6822 | 0 /* condition and thread are valid. */, | |
1042e4c0 | 6823 | tempflag, 0, 0, |
604133b5 AR |
6824 | 0, |
6825 | AUTO_BOOLEAN_TRUE /* pending */, | |
41447f92 VP |
6826 | &gnu_v3_exception_catchpoint_ops, from_tty, |
6827 | 1 /* enabled */); | |
3086aeae | 6828 | |
3086aeae DJ |
6829 | return 1; |
6830 | } | |
6831 | ||
c5aa993b | 6832 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
6833 | |
6834 | static void | |
fba45db2 KB |
6835 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
6836 | int tempflag, int from_tty) | |
c906108c | 6837 | { |
c5aa993b JM |
6838 | char *cond_string = NULL; |
6839 | struct symtab_and_line *sal = NULL; | |
6840 | ||
44feb3ce TT |
6841 | if (!arg) |
6842 | arg = ""; | |
c906108c | 6843 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6844 | |
c906108c SS |
6845 | cond_string = ep_parse_optional_if_clause (&arg); |
6846 | ||
6847 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6848 | error (_("Junk at end of arguments.")); |
c906108c | 6849 | |
059fb39f PM |
6850 | if (ex_event != EX_EVENT_THROW |
6851 | && ex_event != EX_EVENT_CATCH) | |
8a3fe4f8 | 6852 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 6853 | |
3086aeae DJ |
6854 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
6855 | return; | |
6856 | ||
8a3fe4f8 | 6857 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
6858 | } |
6859 | ||
44feb3ce TT |
6860 | /* Implementation of "catch catch" command. */ |
6861 | ||
6862 | static void | |
6863 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
6864 | { | |
6865 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
6866 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); | |
6867 | } | |
6868 | ||
6869 | /* Implementation of "catch throw" command. */ | |
6870 | ||
6871 | static void | |
6872 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
6873 | { | |
6874 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
6875 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); | |
6876 | } | |
6877 | ||
f7f9143b JB |
6878 | /* Create a breakpoint struct for Ada exception catchpoints. */ |
6879 | ||
6880 | static void | |
6881 | create_ada_exception_breakpoint (struct symtab_and_line sal, | |
6882 | char *addr_string, | |
6883 | char *exp_string, | |
6884 | char *cond_string, | |
6885 | struct expression *cond, | |
6886 | struct breakpoint_ops *ops, | |
6887 | int tempflag, | |
6888 | int from_tty) | |
6889 | { | |
6890 | struct breakpoint *b; | |
6891 | ||
6892 | if (from_tty) | |
6893 | { | |
6894 | describe_other_breakpoints (sal.pc, sal.section, -1); | |
6895 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special | |
6896 | version for exception catchpoints, because two catchpoints | |
6897 | used for different exception names will use the same address. | |
6898 | In this case, a "breakpoint ... also set at..." warning is | |
6899 | unproductive. Besides. the warning phrasing is also a bit | |
6900 | inapropriate, we should use the word catchpoint, and tell | |
6901 | the user what type of catchpoint it is. The above is good | |
6902 | enough for now, though. */ | |
6903 | } | |
6904 | ||
6905 | b = set_raw_breakpoint (sal, bp_breakpoint); | |
6906 | set_breakpoint_count (breakpoint_count + 1); | |
6907 | ||
6908 | b->enable_state = bp_enabled; | |
6909 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
6910 | b->number = breakpoint_count; | |
6911 | b->ignore_count = 0; | |
511a6cd4 | 6912 | b->loc->cond = cond; |
f7f9143b JB |
6913 | b->addr_string = addr_string; |
6914 | b->language = language_ada; | |
6915 | b->cond_string = cond_string; | |
6916 | b->exp_string = exp_string; | |
6917 | b->thread = -1; | |
6918 | b->ops = ops; | |
f7f9143b JB |
6919 | |
6920 | mention (b); | |
b60e7edf | 6921 | update_global_location_list (1); |
f7f9143b JB |
6922 | } |
6923 | ||
6924 | /* Implement the "catch exception" command. */ | |
6925 | ||
6926 | static void | |
44feb3ce TT |
6927 | catch_ada_exception_command (char *arg, int from_tty, |
6928 | struct cmd_list_element *command) | |
f7f9143b | 6929 | { |
44feb3ce | 6930 | int tempflag; |
f7f9143b JB |
6931 | struct symtab_and_line sal; |
6932 | enum bptype type; | |
6933 | char *addr_string = NULL; | |
6934 | char *exp_string = NULL; | |
6935 | char *cond_string = NULL; | |
6936 | struct expression *cond = NULL; | |
6937 | struct breakpoint_ops *ops = NULL; | |
6938 | ||
44feb3ce TT |
6939 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
6940 | ||
6941 | if (!arg) | |
6942 | arg = ""; | |
f7f9143b JB |
6943 | sal = ada_decode_exception_location (arg, &addr_string, &exp_string, |
6944 | &cond_string, &cond, &ops); | |
6945 | create_ada_exception_breakpoint (sal, addr_string, exp_string, | |
6946 | cond_string, cond, ops, tempflag, | |
6947 | from_tty); | |
6948 | } | |
6949 | ||
6950 | /* Implement the "catch assert" command. */ | |
6951 | ||
6952 | static void | |
44feb3ce | 6953 | catch_assert_command (char *arg, int from_tty, struct cmd_list_element *command) |
f7f9143b | 6954 | { |
44feb3ce | 6955 | int tempflag; |
f7f9143b JB |
6956 | struct symtab_and_line sal; |
6957 | char *addr_string = NULL; | |
6958 | struct breakpoint_ops *ops = NULL; | |
6959 | ||
44feb3ce TT |
6960 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
6961 | ||
6962 | if (!arg) | |
6963 | arg = ""; | |
f7f9143b JB |
6964 | sal = ada_decode_assert_location (arg, &addr_string, &ops); |
6965 | create_ada_exception_breakpoint (sal, addr_string, NULL, NULL, NULL, ops, | |
6966 | tempflag, from_tty); | |
6967 | } | |
6968 | ||
c906108c | 6969 | static void |
fba45db2 | 6970 | catch_command (char *arg, int from_tty) |
c906108c | 6971 | { |
44feb3ce | 6972 | error (_("Catch requires an event name.")); |
c906108c SS |
6973 | } |
6974 | \f | |
6975 | ||
6976 | static void | |
fba45db2 | 6977 | tcatch_command (char *arg, int from_tty) |
c906108c | 6978 | { |
44feb3ce | 6979 | error (_("Catch requires an event name.")); |
c906108c SS |
6980 | } |
6981 | ||
80f8a6eb | 6982 | /* Delete breakpoints by address or line. */ |
c906108c SS |
6983 | |
6984 | static void | |
fba45db2 | 6985 | clear_command (char *arg, int from_tty) |
c906108c | 6986 | { |
d6e956e5 VP |
6987 | struct breakpoint *b; |
6988 | VEC(breakpoint_p) *found = 0; | |
6989 | int ix; | |
c906108c SS |
6990 | int default_match; |
6991 | struct symtabs_and_lines sals; | |
6992 | struct symtab_and_line sal; | |
c906108c SS |
6993 | int i; |
6994 | ||
6995 | if (arg) | |
6996 | { | |
6997 | sals = decode_line_spec (arg, 1); | |
6998 | default_match = 0; | |
6999 | } | |
7000 | else | |
7001 | { | |
c5aa993b | 7002 | sals.sals = (struct symtab_and_line *) |
c906108c | 7003 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 7004 | make_cleanup (xfree, sals.sals); |
fe39c653 | 7005 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
7006 | sal.line = default_breakpoint_line; |
7007 | sal.symtab = default_breakpoint_symtab; | |
7008 | sal.pc = default_breakpoint_address; | |
7009 | if (sal.symtab == 0) | |
8a3fe4f8 | 7010 | error (_("No source file specified.")); |
c906108c SS |
7011 | |
7012 | sals.sals[0] = sal; | |
7013 | sals.nelts = 1; | |
7014 | ||
7015 | default_match = 1; | |
7016 | } | |
7017 | ||
ed0616c6 VP |
7018 | /* We don't call resolve_sal_pc here. That's not |
7019 | as bad as it seems, because all existing breakpoints | |
7020 | typically have both file/line and pc set. So, if | |
7021 | clear is given file/line, we can match this to existing | |
7022 | breakpoint without obtaining pc at all. | |
7023 | ||
7024 | We only support clearing given the address explicitly | |
7025 | present in breakpoint table. Say, we've set breakpoint | |
7026 | at file:line. There were several PC values for that file:line, | |
7027 | due to optimization, all in one block. | |
7028 | We've picked one PC value. If "clear" is issued with another | |
7029 | PC corresponding to the same file:line, the breakpoint won't | |
7030 | be cleared. We probably can still clear the breakpoint, but | |
7031 | since the other PC value is never presented to user, user | |
7032 | can only find it by guessing, and it does not seem important | |
7033 | to support that. */ | |
7034 | ||
c906108c | 7035 | /* For each line spec given, delete bps which correspond |
80f8a6eb MS |
7036 | to it. Do it in two passes, solely to preserve the current |
7037 | behavior that from_tty is forced true if we delete more than | |
7038 | one breakpoint. */ | |
c906108c | 7039 | |
80f8a6eb | 7040 | found = NULL; |
c906108c SS |
7041 | for (i = 0; i < sals.nelts; i++) |
7042 | { | |
7043 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
7044 | If line given (pc == 0), clear all bpts on specified line. |
7045 | If defaulting, clear all bpts on default line | |
c906108c | 7046 | or at default pc. |
c5aa993b JM |
7047 | |
7048 | defaulting sal.pc != 0 tests to do | |
7049 | ||
7050 | 0 1 pc | |
7051 | 1 1 pc _and_ line | |
7052 | 0 0 line | |
7053 | 1 0 <can't happen> */ | |
c906108c SS |
7054 | |
7055 | sal = sals.sals[i]; | |
c906108c | 7056 | |
d6e956e5 VP |
7057 | /* Find all matching breakpoints and add them to |
7058 | 'found'. */ | |
7059 | ALL_BREAKPOINTS (b) | |
c5aa993b | 7060 | { |
0d381245 | 7061 | int match = 0; |
80f8a6eb MS |
7062 | /* Are we going to delete b? */ |
7063 | if (b->type != bp_none | |
7064 | && b->type != bp_watchpoint | |
7065 | && b->type != bp_hardware_watchpoint | |
7066 | && b->type != bp_read_watchpoint | |
0d381245 VP |
7067 | && b->type != bp_access_watchpoint) |
7068 | { | |
7069 | struct bp_location *loc = b->loc; | |
7070 | for (; loc; loc = loc->next) | |
7071 | { | |
7072 | int pc_match = sal.pc | |
7073 | && (loc->address == sal.pc) | |
7074 | && (!section_is_overlay (loc->section) | |
7075 | || loc->section == sal.section); | |
7076 | int line_match = ((default_match || (0 == sal.pc)) | |
7077 | && b->source_file != NULL | |
7078 | && sal.symtab != NULL | |
7079 | && strcmp (b->source_file, sal.symtab->filename) == 0 | |
7080 | && b->line_number == sal.line); | |
7081 | if (pc_match || line_match) | |
7082 | { | |
7083 | match = 1; | |
7084 | break; | |
7085 | } | |
7086 | } | |
7087 | } | |
7088 | ||
7089 | if (match) | |
d6e956e5 | 7090 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 7091 | } |
80f8a6eb MS |
7092 | } |
7093 | /* Now go thru the 'found' chain and delete them. */ | |
d6e956e5 | 7094 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
7095 | { |
7096 | if (arg) | |
8a3fe4f8 | 7097 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 7098 | else |
8a3fe4f8 | 7099 | error (_("No breakpoint at this line.")); |
80f8a6eb | 7100 | } |
c906108c | 7101 | |
d6e956e5 | 7102 | if (VEC_length(breakpoint_p, found) > 1) |
80f8a6eb MS |
7103 | from_tty = 1; /* Always report if deleted more than one */ |
7104 | if (from_tty) | |
a3f17187 | 7105 | { |
d6e956e5 | 7106 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
7107 | printf_unfiltered (_("Deleted breakpoint ")); |
7108 | else | |
7109 | printf_unfiltered (_("Deleted breakpoints ")); | |
7110 | } | |
80f8a6eb | 7111 | breakpoints_changed (); |
d6e956e5 VP |
7112 | |
7113 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 7114 | { |
c5aa993b | 7115 | if (from_tty) |
d6e956e5 VP |
7116 | printf_unfiltered ("%d ", b->number); |
7117 | delete_breakpoint (b); | |
c906108c | 7118 | } |
80f8a6eb MS |
7119 | if (from_tty) |
7120 | putchar_unfiltered ('\n'); | |
c906108c SS |
7121 | } |
7122 | \f | |
7123 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
7124 | all breakpoints that are marked for deletion, whether hit or not. | |
7125 | This is called after any breakpoint is hit, or after errors. */ | |
7126 | ||
7127 | void | |
fba45db2 | 7128 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
7129 | { |
7130 | struct breakpoint *b, *temp; | |
7131 | ||
7132 | for (; bs; bs = bs->next) | |
20874c92 VP |
7133 | if (bs->breakpoint_at |
7134 | && bs->breakpoint_at->owner | |
7135 | && bs->breakpoint_at->owner->disposition == disp_del | |
c906108c | 7136 | && bs->stop) |
4f8d1dc6 | 7137 | delete_breakpoint (bs->breakpoint_at->owner); |
c906108c SS |
7138 | |
7139 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7140 | { |
b5de0fa7 | 7141 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
7142 | delete_breakpoint (b); |
7143 | } | |
c906108c SS |
7144 | } |
7145 | ||
f7545552 TT |
7146 | /* A cleanup function which destroys a vector. */ |
7147 | ||
7148 | static void | |
7149 | do_vec_free (void *p) | |
7150 | { | |
7151 | VEC(bp_location_p) **vec = p; | |
7152 | if (*vec) | |
7153 | VEC_free (bp_location_p, *vec); | |
7154 | } | |
7155 | ||
4cd9bd08 | 7156 | /* If SHOULD_INSERT is false, do not insert any breakpoint locations |
b60e7edf PA |
7157 | into the inferior, only remove already-inserted locations that no |
7158 | longer should be inserted. Functions that delete a breakpoint or | |
7159 | breakpoints should pass false, so that deleting a breakpoint | |
7160 | doesn't have the side effect of inserting the locations of other | |
7161 | breakpoints that are marked not-inserted, but should_be_inserted | |
7162 | returns true on them. | |
7163 | ||
7164 | This behaviour is useful is situations close to tear-down -- e.g., | |
7165 | after an exec, while the target still has execution, but breakpoint | |
7166 | shadows of the previous executable image should *NOT* be restored | |
7167 | to the new image; or before detaching, where the target still has | |
7168 | execution and wants to delete breakpoints from GDB's lists, and all | |
7169 | breakpoints had already been removed from the inferior. */ | |
7170 | ||
0d381245 | 7171 | static void |
b60e7edf | 7172 | update_global_location_list (int should_insert) |
0d381245 | 7173 | { |
74960c60 VP |
7174 | struct breakpoint *b; |
7175 | struct bp_location **next = &bp_location_chain; | |
7176 | struct bp_location *loc; | |
7177 | struct bp_location *loc2; | |
74960c60 VP |
7178 | VEC(bp_location_p) *old_locations = NULL; |
7179 | int ret; | |
7180 | int ix; | |
f7545552 TT |
7181 | struct cleanup *cleanups; |
7182 | ||
7183 | cleanups = make_cleanup (do_vec_free, &old_locations); | |
74960c60 VP |
7184 | /* Store old locations for future reference. */ |
7185 | for (loc = bp_location_chain; loc; loc = loc->global_next) | |
7186 | VEC_safe_push (bp_location_p, old_locations, loc); | |
0d381245 | 7187 | |
74960c60 VP |
7188 | bp_location_chain = NULL; |
7189 | ALL_BREAKPOINTS (b) | |
0d381245 | 7190 | { |
74960c60 | 7191 | for (loc = b->loc; loc; loc = loc->next) |
0d381245 | 7192 | { |
74960c60 VP |
7193 | *next = loc; |
7194 | next = &(loc->global_next); | |
7195 | *next = NULL; | |
0d381245 | 7196 | } |
74960c60 VP |
7197 | } |
7198 | ||
7199 | /* Identify bp_location instances that are no longer present in the new | |
7200 | list, and therefore should be freed. Note that it's not necessary that | |
7201 | those locations should be removed from inferior -- if there's another | |
7202 | location at the same address (previously marked as duplicate), | |
7203 | we don't need to remove/insert the location. */ | |
7204 | for (ix = 0; VEC_iterate(bp_location_p, old_locations, ix, loc); ++ix) | |
7205 | { | |
7206 | /* Tells if 'loc' is found amoung the new locations. If not, we | |
7207 | have to free it. */ | |
7208 | int found_object = 0; | |
20874c92 VP |
7209 | /* Tells if the location should remain inserted in the target. */ |
7210 | int keep_in_target = 0; | |
7211 | int removed = 0; | |
74960c60 VP |
7212 | for (loc2 = bp_location_chain; loc2; loc2 = loc2->global_next) |
7213 | if (loc2 == loc) | |
7214 | { | |
7215 | found_object = 1; | |
7216 | break; | |
7217 | } | |
7218 | ||
7219 | /* If this location is no longer present, and inserted, look if there's | |
7220 | maybe a new location at the same address. If so, mark that one | |
7221 | inserted, and don't remove this one. This is needed so that we | |
7222 | don't have a time window where a breakpoint at certain location is not | |
7223 | inserted. */ | |
7224 | ||
7225 | if (loc->inserted) | |
0d381245 | 7226 | { |
74960c60 | 7227 | /* If the location is inserted now, we might have to remove it. */ |
74960c60 VP |
7228 | |
7229 | if (found_object && should_be_inserted (loc)) | |
7230 | { | |
7231 | /* The location is still present in the location list, and still | |
7232 | should be inserted. Don't do anything. */ | |
20874c92 | 7233 | keep_in_target = 1; |
74960c60 VP |
7234 | } |
7235 | else | |
7236 | { | |
7237 | /* The location is either no longer present, or got disabled. | |
7238 | See if there's another location at the same address, in which | |
7239 | case we don't need to remove this one from the target. */ | |
7240 | if (breakpoint_address_is_meaningful (loc->owner)) | |
7241 | for (loc2 = bp_location_chain; loc2; loc2 = loc2->global_next) | |
7242 | { | |
7243 | /* For the sake of should_insert_location. The | |
7244 | call to check_duplicates will fix up this later. */ | |
7245 | loc2->duplicate = 0; | |
7246 | if (should_be_inserted (loc2) | |
7247 | && loc2 != loc && loc2->address == loc->address) | |
7248 | { | |
7249 | loc2->inserted = 1; | |
7250 | loc2->target_info = loc->target_info; | |
20874c92 | 7251 | keep_in_target = 1; |
74960c60 VP |
7252 | break; |
7253 | } | |
7254 | } | |
7255 | } | |
7256 | ||
20874c92 VP |
7257 | if (!keep_in_target) |
7258 | { | |
7259 | if (remove_breakpoint (loc, mark_uninserted)) | |
7260 | { | |
7261 | /* This is just about all we can do. We could keep this | |
7262 | location on the global list, and try to remove it next | |
7263 | time, but there's no particular reason why we will | |
7264 | succeed next time. | |
7265 | ||
7266 | Note that at this point, loc->owner is still valid, | |
7267 | as delete_breakpoint frees the breakpoint only | |
7268 | after calling us. */ | |
7269 | printf_filtered (_("warning: Error removing breakpoint %d\n"), | |
7270 | loc->owner->number); | |
7271 | } | |
7272 | removed = 1; | |
7273 | } | |
0d381245 | 7274 | } |
74960c60 VP |
7275 | |
7276 | if (!found_object) | |
1c5cfe86 PA |
7277 | { |
7278 | if (removed && non_stop) | |
20874c92 VP |
7279 | { |
7280 | /* This location was removed from the targets. In non-stop mode, | |
7281 | a race condition is possible where we've removed a breakpoint, | |
7282 | but stop events for that breakpoint are already queued and will | |
7283 | arrive later. To suppress spurious SIGTRAPs reported to user, | |
7284 | we keep this breakpoint location for a bit, and will retire it | |
7285 | after we see 3 * thread_count events. | |
1c5cfe86 | 7286 | The theory here is that reporting of events should, |
20874c92 VP |
7287 | "on the average", be fair, so after that many event we'll see |
7288 | events from all threads that have anything of interest, and no | |
1c5cfe86 | 7289 | longer need to keep this breakpoint. This is just a |
20874c92 | 7290 | heuristic, but if it's wrong, we'll report unexpected SIGTRAP, |
1c5cfe86 | 7291 | which is usability issue, but not a correctness problem. */ |
20874c92 VP |
7292 | loc->events_till_retirement = 3 * (thread_count () + 1); |
7293 | loc->owner = NULL; | |
20874c92 | 7294 | |
1c5cfe86 PA |
7295 | VEC_safe_push (bp_location_p, moribund_locations, loc); |
7296 | } | |
7297 | else | |
7298 | free_bp_location (loc); | |
20874c92 | 7299 | } |
74960c60 | 7300 | } |
1c5cfe86 | 7301 | |
74960c60 VP |
7302 | ALL_BREAKPOINTS (b) |
7303 | { | |
7304 | check_duplicates (b); | |
0d381245 | 7305 | } |
74960c60 | 7306 | |
50c71eaf | 7307 | if (breakpoints_always_inserted_mode () && should_insert |
c35b1492 | 7308 | && (have_live_inferiors () |
2567c7d9 | 7309 | || (gdbarch_has_global_breakpoints (target_gdbarch)))) |
74960c60 | 7310 | insert_breakpoint_locations (); |
f7545552 TT |
7311 | |
7312 | do_cleanups (cleanups); | |
74960c60 VP |
7313 | } |
7314 | ||
20874c92 VP |
7315 | void |
7316 | breakpoint_retire_moribund (void) | |
7317 | { | |
7318 | struct bp_location *loc; | |
7319 | int ix; | |
7320 | ||
7321 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
7322 | if (--(loc->events_till_retirement) == 0) | |
7323 | { | |
7324 | free_bp_location (loc); | |
7325 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
7326 | --ix; | |
7327 | } | |
7328 | } | |
7329 | ||
74960c60 | 7330 | static void |
b60e7edf | 7331 | update_global_location_list_nothrow (int inserting) |
74960c60 VP |
7332 | { |
7333 | struct gdb_exception e; | |
7334 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
b60e7edf | 7335 | update_global_location_list (inserting); |
0d381245 VP |
7336 | } |
7337 | ||
a474d7c2 PA |
7338 | /* Clear BPT from a BPS. */ |
7339 | static void | |
7340 | bpstat_remove_breakpoint (bpstat bps, struct breakpoint *bpt) | |
7341 | { | |
7342 | bpstat bs; | |
7343 | for (bs = bps; bs; bs = bs->next) | |
7344 | if (bs->breakpoint_at && bs->breakpoint_at->owner == bpt) | |
7345 | { | |
7346 | bs->breakpoint_at = NULL; | |
7347 | bs->old_val = NULL; | |
7348 | /* bs->commands will be freed later. */ | |
7349 | } | |
7350 | } | |
7351 | ||
7352 | /* Callback for iterate_over_threads. */ | |
7353 | static int | |
7354 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
7355 | { | |
7356 | struct breakpoint *bpt = data; | |
7357 | bpstat_remove_breakpoint (th->stop_bpstat, bpt); | |
7358 | return 0; | |
7359 | } | |
7360 | ||
53a5351d JM |
7361 | /* Delete a breakpoint and clean up all traces of it in the data |
7362 | structures. */ | |
c906108c SS |
7363 | |
7364 | void | |
fba45db2 | 7365 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 7366 | { |
52f0bd74 | 7367 | struct breakpoint *b; |
74960c60 | 7368 | struct bp_location *loc, *next; |
c906108c | 7369 | |
8a3fe4f8 | 7370 | gdb_assert (bpt != NULL); |
c906108c SS |
7371 | |
7372 | /* Has this bp already been deleted? This can happen because multiple | |
7373 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
7374 | ||
7375 | One example of this happening is a watchpoint's scope bp. When the | |
7376 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
7377 | delete it. We also delete its scope bp. But the scope bp is marked | |
7378 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
7379 | checked for auto-deleting bp's, which are deleted. | |
7380 | ||
7381 | A real solution to this problem might involve reference counts in bp's, | |
7382 | and/or giving them pointers back to their referencing bpstat's, and | |
7383 | teaching delete_breakpoint to only free a bp's storage when no more | |
1272ad14 | 7384 | references were extent. A cheaper bandaid was chosen. */ |
c906108c SS |
7385 | if (bpt->type == bp_none) |
7386 | return; | |
7387 | ||
383f836e | 7388 | observer_notify_breakpoint_deleted (bpt->number); |
c906108c | 7389 | |
c906108c SS |
7390 | if (breakpoint_chain == bpt) |
7391 | breakpoint_chain = bpt->next; | |
7392 | ||
c906108c SS |
7393 | ALL_BREAKPOINTS (b) |
7394 | if (b->next == bpt) | |
c5aa993b JM |
7395 | { |
7396 | b->next = bpt->next; | |
7397 | break; | |
7398 | } | |
c906108c | 7399 | |
c906108c | 7400 | free_command_lines (&bpt->commands); |
c906108c | 7401 | if (bpt->cond_string != NULL) |
b8c9b27d | 7402 | xfree (bpt->cond_string); |
c906108c | 7403 | if (bpt->addr_string != NULL) |
b8c9b27d | 7404 | xfree (bpt->addr_string); |
c906108c | 7405 | if (bpt->exp != NULL) |
b8c9b27d | 7406 | xfree (bpt->exp); |
c906108c | 7407 | if (bpt->exp_string != NULL) |
b8c9b27d | 7408 | xfree (bpt->exp_string); |
c906108c SS |
7409 | if (bpt->val != NULL) |
7410 | value_free (bpt->val); | |
7411 | if (bpt->source_file != NULL) | |
b8c9b27d | 7412 | xfree (bpt->source_file); |
c906108c | 7413 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 7414 | xfree (bpt->exec_pathname); |
c906108c SS |
7415 | |
7416 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
7417 | /* FIXME, how can we find all bpstat's? | |
198757a8 VP |
7418 | We just check stop_bpstat for now. Note that we cannot just |
7419 | remove bpstats pointing at bpt from the stop_bpstat list | |
7420 | entirely, as breakpoint commands are associated with the bpstat; | |
7421 | if we remove it here, then the later call to | |
7422 | bpstat_do_actions (&stop_bpstat); | |
7423 | in event-top.c won't do anything, and temporary breakpoints | |
7424 | with commands won't work. */ | |
a474d7c2 | 7425 | |
a474d7c2 | 7426 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); |
74960c60 VP |
7427 | |
7428 | /* Now that breakpoint is removed from breakpoint | |
7429 | list, update the global location list. This | |
7430 | will remove locations that used to belong to | |
7431 | this breakpoint. Do this before freeing | |
7432 | the breakpoint itself, since remove_breakpoint | |
7433 | looks at location's owner. It might be better | |
7434 | design to have location completely self-contained, | |
7435 | but it's not the case now. */ | |
b60e7edf | 7436 | update_global_location_list (0); |
74960c60 VP |
7437 | |
7438 | ||
c906108c SS |
7439 | /* On the chance that someone will soon try again to delete this same |
7440 | bp, we mark it as deleted before freeing its storage. */ | |
7441 | bpt->type = bp_none; | |
7442 | ||
b8c9b27d | 7443 | xfree (bpt); |
c906108c SS |
7444 | } |
7445 | ||
4d6140d9 AC |
7446 | static void |
7447 | do_delete_breakpoint_cleanup (void *b) | |
7448 | { | |
7449 | delete_breakpoint (b); | |
7450 | } | |
7451 | ||
7452 | struct cleanup * | |
7453 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
7454 | { | |
7455 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
7456 | } | |
7457 | ||
c906108c | 7458 | void |
fba45db2 | 7459 | delete_command (char *arg, int from_tty) |
c906108c SS |
7460 | { |
7461 | struct breakpoint *b, *temp; | |
7462 | ||
ea9365bb TT |
7463 | dont_repeat (); |
7464 | ||
c906108c SS |
7465 | if (arg == 0) |
7466 | { | |
7467 | int breaks_to_delete = 0; | |
7468 | ||
7469 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
7470 | Do not delete internal or call-dummy breakpoints, these |
7471 | have to be deleted with an explicit breakpoint number argument. */ | |
7472 | ALL_BREAKPOINTS (b) | |
7473 | { | |
059fb39f PM |
7474 | if (b->type != bp_call_dummy |
7475 | && b->type != bp_shlib_event | |
7476 | && b->type != bp_thread_event | |
7477 | && b->type != bp_overlay_event | |
0fd8e87f | 7478 | && b->type != bp_longjmp_master |
059fb39f | 7479 | && b->number >= 0) |
973d738b DJ |
7480 | { |
7481 | breaks_to_delete = 1; | |
7482 | break; | |
7483 | } | |
c5aa993b | 7484 | } |
c906108c SS |
7485 | |
7486 | /* Ask user only if there are some breakpoints to delete. */ | |
7487 | if (!from_tty | |
e2e0b3e5 | 7488 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 7489 | { |
c5aa993b JM |
7490 | ALL_BREAKPOINTS_SAFE (b, temp) |
7491 | { | |
059fb39f PM |
7492 | if (b->type != bp_call_dummy |
7493 | && b->type != bp_shlib_event | |
7494 | && b->type != bp_thread_event | |
7495 | && b->type != bp_overlay_event | |
0fd8e87f | 7496 | && b->type != bp_longjmp_master |
059fb39f | 7497 | && b->number >= 0) |
c5aa993b JM |
7498 | delete_breakpoint (b); |
7499 | } | |
c906108c SS |
7500 | } |
7501 | } | |
7502 | else | |
7503 | map_breakpoint_numbers (arg, delete_breakpoint); | |
7504 | } | |
7505 | ||
0d381245 VP |
7506 | static int |
7507 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 7508 | { |
0d381245 VP |
7509 | for (; loc; loc = loc->next) |
7510 | if (!loc->shlib_disabled) | |
7511 | return 0; | |
7512 | return 1; | |
fe3f5fa8 VP |
7513 | } |
7514 | ||
776592bf DE |
7515 | /* Subroutine of update_breakpoint_locations to simplify it. |
7516 | Return non-zero if multiple fns in list LOC have the same name. | |
7517 | Null names are ignored. */ | |
7518 | ||
7519 | static int | |
7520 | ambiguous_names_p (struct bp_location *loc) | |
7521 | { | |
7522 | struct bp_location *l; | |
7523 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
7524 | (int (*) (const void *, const void *)) streq, | |
7525 | NULL, xcalloc, xfree); | |
7526 | ||
7527 | for (l = loc; l != NULL; l = l->next) | |
7528 | { | |
7529 | const char **slot; | |
7530 | const char *name = l->function_name; | |
7531 | ||
7532 | /* Allow for some names to be NULL, ignore them. */ | |
7533 | if (name == NULL) | |
7534 | continue; | |
7535 | ||
7536 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
7537 | INSERT); | |
7538 | /* NOTE: We can assume slot != NULL here because xcalloc never returns | |
7539 | NULL. */ | |
7540 | if (*slot != NULL) | |
7541 | { | |
7542 | htab_delete (htab); | |
7543 | return 1; | |
7544 | } | |
7545 | *slot = name; | |
7546 | } | |
7547 | ||
7548 | htab_delete (htab); | |
7549 | return 0; | |
7550 | } | |
7551 | ||
fe3f5fa8 | 7552 | static void |
0d381245 VP |
7553 | update_breakpoint_locations (struct breakpoint *b, |
7554 | struct symtabs_and_lines sals) | |
fe3f5fa8 VP |
7555 | { |
7556 | int i; | |
7557 | char *s; | |
0d381245 VP |
7558 | struct bp_location *existing_locations = b->loc; |
7559 | ||
7560 | /* If there's no new locations, and all existing locations | |
7561 | are pending, don't do anything. This optimizes | |
7562 | the common case where all locations are in the same | |
7563 | shared library, that was unloaded. We'd like to | |
7564 | retain the location, so that when the library | |
7565 | is loaded again, we don't loose the enabled/disabled | |
7566 | status of the individual locations. */ | |
7567 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) | |
fe3f5fa8 VP |
7568 | return; |
7569 | ||
fe3f5fa8 VP |
7570 | b->loc = NULL; |
7571 | ||
0d381245 | 7572 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 7573 | { |
0d381245 | 7574 | struct bp_location *new_loc = |
39d61571 | 7575 | add_location_to_breakpoint (b, &(sals.sals[i])); |
fe3f5fa8 | 7576 | |
0d381245 VP |
7577 | /* Reparse conditions, they might contain references to the |
7578 | old symtab. */ | |
7579 | if (b->cond_string != NULL) | |
7580 | { | |
7581 | struct gdb_exception e; | |
fe3f5fa8 | 7582 | |
0d381245 VP |
7583 | s = b->cond_string; |
7584 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
7585 | { | |
7586 | new_loc->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), | |
7587 | 0); | |
7588 | } | |
7589 | if (e.reason < 0) | |
7590 | { | |
7591 | warning (_("failed to reevaluate condition for breakpoint %d: %s"), | |
7592 | b->number, e.message); | |
7593 | new_loc->enabled = 0; | |
7594 | } | |
7595 | } | |
fe3f5fa8 | 7596 | |
0d381245 VP |
7597 | if (b->source_file != NULL) |
7598 | xfree (b->source_file); | |
7599 | if (sals.sals[i].symtab == NULL) | |
7600 | b->source_file = NULL; | |
7601 | else | |
1b36a34b | 7602 | b->source_file = xstrdup (sals.sals[i].symtab->filename); |
fe3f5fa8 | 7603 | |
0d381245 VP |
7604 | if (b->line_number == 0) |
7605 | b->line_number = sals.sals[i].line; | |
7606 | } | |
fe3f5fa8 | 7607 | |
514f746b AR |
7608 | /* Update locations of permanent breakpoints. */ |
7609 | if (b->enable_state == bp_permanent) | |
7610 | make_breakpoint_permanent (b); | |
7611 | ||
0d381245 VP |
7612 | /* If possible, carry over 'disable' status from existing breakpoints. */ |
7613 | { | |
7614 | struct bp_location *e = existing_locations; | |
776592bf DE |
7615 | /* If there are multiple breakpoints with the same function name, |
7616 | e.g. for inline functions, comparing function names won't work. | |
7617 | Instead compare pc addresses; this is just a heuristic as things | |
7618 | may have moved, but in practice it gives the correct answer | |
7619 | often enough until a better solution is found. */ | |
7620 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
7621 | ||
0d381245 VP |
7622 | for (; e; e = e->next) |
7623 | { | |
7624 | if (!e->enabled && e->function_name) | |
7625 | { | |
7626 | struct bp_location *l = b->loc; | |
776592bf DE |
7627 | if (have_ambiguous_names) |
7628 | { | |
7629 | for (; l; l = l->next) | |
7630 | if (e->address == l->address) | |
7631 | { | |
7632 | l->enabled = 0; | |
7633 | break; | |
7634 | } | |
7635 | } | |
7636 | else | |
7637 | { | |
7638 | for (; l; l = l->next) | |
7639 | if (l->function_name | |
7640 | && strcmp (e->function_name, l->function_name) == 0) | |
7641 | { | |
7642 | l->enabled = 0; | |
7643 | break; | |
7644 | } | |
7645 | } | |
0d381245 VP |
7646 | } |
7647 | } | |
7648 | } | |
fe3f5fa8 | 7649 | |
b60e7edf | 7650 | update_global_location_list (1); |
fe3f5fa8 VP |
7651 | } |
7652 | ||
7653 | ||
c906108c SS |
7654 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
7655 | The value we return ends up being the return value from catch_errors. | |
7656 | Unused in this case. */ | |
7657 | ||
7658 | static int | |
4efb68b1 | 7659 | breakpoint_re_set_one (void *bint) |
c906108c | 7660 | { |
53a5351d JM |
7661 | /* get past catch_errs */ |
7662 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
7663 | struct value *mark; |
7664 | int i; | |
fe3f5fa8 VP |
7665 | int not_found = 0; |
7666 | int *not_found_ptr = ¬_found; | |
7667 | struct symtabs_and_lines sals = {}; | |
ed0616c6 | 7668 | struct symtabs_and_lines expanded; |
c906108c | 7669 | char *s; |
b5de0fa7 | 7670 | enum enable_state save_enable; |
fe3f5fa8 | 7671 | struct gdb_exception e; |
f7545552 | 7672 | struct cleanup *cleanups; |
c906108c SS |
7673 | |
7674 | switch (b->type) | |
7675 | { | |
7676 | case bp_none: | |
8a3fe4f8 | 7677 | warning (_("attempted to reset apparently deleted breakpoint #%d?"), |
53a5351d | 7678 | b->number); |
c906108c SS |
7679 | return 0; |
7680 | case bp_breakpoint: | |
7681 | case bp_hardware_breakpoint: | |
1042e4c0 | 7682 | case bp_tracepoint: |
c906108c SS |
7683 | if (b->addr_string == NULL) |
7684 | { | |
7685 | /* Anything without a string can't be re-set. */ | |
7686 | delete_breakpoint (b); | |
7687 | return 0; | |
7688 | } | |
c906108c SS |
7689 | |
7690 | set_language (b->language); | |
7691 | input_radix = b->input_radix; | |
7692 | s = b->addr_string; | |
fe3f5fa8 | 7693 | TRY_CATCH (e, RETURN_MASK_ERROR) |
c906108c | 7694 | { |
fe3f5fa8 VP |
7695 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, |
7696 | not_found_ptr); | |
7697 | } | |
7698 | if (e.reason < 0) | |
7699 | { | |
7700 | int not_found_and_ok = 0; | |
7701 | /* For pending breakpoints, it's expected that parsing | |
7702 | will fail until the right shared library is loaded. | |
7703 | User has already told to create pending breakpoints and | |
7704 | don't need extra messages. If breakpoint is in bp_shlib_disabled | |
7705 | state, then user already saw the message about that breakpoint | |
7706 | being disabled, and don't want to see more errors. */ | |
0d381245 VP |
7707 | if (not_found |
7708 | && (b->condition_not_parsed | |
7709 | || (b->loc && b->loc->shlib_disabled) | |
7710 | || b->enable_state == bp_disabled)) | |
fe3f5fa8 VP |
7711 | not_found_and_ok = 1; |
7712 | ||
7713 | if (!not_found_and_ok) | |
c906108c | 7714 | { |
fe3f5fa8 VP |
7715 | /* We surely don't want to warn about the same breakpoint |
7716 | 10 times. One solution, implemented here, is disable | |
7717 | the breakpoint on error. Another solution would be to | |
7718 | have separate 'warning emitted' flag. Since this | |
7719 | happens only when a binary has changed, I don't know | |
7720 | which approach is better. */ | |
7721 | b->enable_state = bp_disabled; | |
7722 | throw_exception (e); | |
c906108c | 7723 | } |
fe3f5fa8 | 7724 | } |
c906108c | 7725 | |
fe3f5fa8 VP |
7726 | if (not_found) |
7727 | break; | |
7728 | ||
7729 | gdb_assert (sals.nelts == 1); | |
7730 | resolve_sal_pc (&sals.sals[0]); | |
0d381245 | 7731 | if (b->condition_not_parsed && s && s[0]) |
fe3f5fa8 VP |
7732 | { |
7733 | char *cond_string = 0; | |
7734 | int thread = -1; | |
4a306c9a JB |
7735 | int task = 0; |
7736 | ||
fe3f5fa8 | 7737 | find_condition_and_thread (s, sals.sals[0].pc, |
4a306c9a | 7738 | &cond_string, &thread, &task); |
fe3f5fa8 VP |
7739 | if (cond_string) |
7740 | b->cond_string = cond_string; | |
7741 | b->thread = thread; | |
4a306c9a | 7742 | b->task = task; |
0d381245 | 7743 | b->condition_not_parsed = 0; |
fe3f5fa8 | 7744 | } |
ed0616c6 | 7745 | expanded = expand_line_sal_maybe (sals.sals[0]); |
f7545552 | 7746 | cleanups = make_cleanup (xfree, sals.sals); |
ed0616c6 | 7747 | update_breakpoint_locations (b, expanded); |
f7545552 | 7748 | do_cleanups (cleanups); |
c906108c SS |
7749 | break; |
7750 | ||
7751 | case bp_watchpoint: | |
7752 | case bp_hardware_watchpoint: | |
7753 | case bp_read_watchpoint: | |
7754 | case bp_access_watchpoint: | |
0b3de036 VP |
7755 | /* Watchpoint can be either on expression using entirely global variables, |
7756 | or it can be on local variables. | |
7757 | ||
7758 | Watchpoints of the first kind are never auto-deleted, and even persist | |
7759 | across program restarts. Since they can use variables from shared | |
7760 | libraries, we need to reparse expression as libraries are loaded | |
7761 | and unloaded. | |
7762 | ||
7763 | Watchpoints on local variables can also change meaning as result | |
7764 | of solib event. For example, if a watchpoint uses both a local and | |
7765 | a global variables in expression, it's a local watchpoint, but | |
7766 | unloading of a shared library will make the expression invalid. | |
7767 | This is not a very common use case, but we still re-evaluate | |
7768 | expression, to avoid surprises to the user. | |
7769 | ||
7770 | Note that for local watchpoints, we re-evaluate it only if | |
7771 | watchpoints frame id is still valid. If it's not, it means | |
7772 | the watchpoint is out of scope and will be deleted soon. In fact, | |
7773 | I'm not sure we'll ever be called in this case. | |
7774 | ||
7775 | If a local watchpoint's frame id is still valid, then | |
7776 | b->exp_valid_block is likewise valid, and we can safely use it. | |
7777 | ||
7778 | Don't do anything about disabled watchpoints, since they will | |
7779 | be reevaluated again when enabled. */ | |
a5606eee | 7780 | update_watchpoint (b, 1 /* reparse */); |
c906108c | 7781 | break; |
c5aa993b JM |
7782 | /* We needn't really do anything to reset these, since the mask |
7783 | that requests them is unaffected by e.g., new libraries being | |
7784 | loaded. */ | |
ce78b96d | 7785 | case bp_catchpoint: |
c906108c | 7786 | break; |
c5aa993b | 7787 | |
c906108c | 7788 | default: |
a3f17187 | 7789 | printf_filtered (_("Deleting unknown breakpoint type %d\n"), b->type); |
c906108c | 7790 | /* fall through */ |
0fd8e87f UW |
7791 | /* Delete overlay event and longjmp master breakpoints; they will be |
7792 | reset later by breakpoint_re_set. */ | |
1900040c | 7793 | case bp_overlay_event: |
0fd8e87f | 7794 | case bp_longjmp_master: |
c906108c SS |
7795 | delete_breakpoint (b); |
7796 | break; | |
7797 | ||
c5aa993b JM |
7798 | /* This breakpoint is special, it's set up when the inferior |
7799 | starts and we really don't want to touch it. */ | |
c906108c SS |
7800 | case bp_shlib_event: |
7801 | ||
c4093a6a JM |
7802 | /* Like bp_shlib_event, this breakpoint type is special. |
7803 | Once it is set up, we do not want to touch it. */ | |
7804 | case bp_thread_event: | |
7805 | ||
c5aa993b JM |
7806 | /* Keep temporary breakpoints, which can be encountered when we step |
7807 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7808 | Otherwise these should have been blown away via the cleanup chain | |
7809 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7810 | case bp_until: |
7811 | case bp_finish: | |
7812 | case bp_watchpoint_scope: | |
7813 | case bp_call_dummy: | |
7814 | case bp_step_resume: | |
611c83ae PA |
7815 | case bp_longjmp: |
7816 | case bp_longjmp_resume: | |
c906108c SS |
7817 | break; |
7818 | } | |
7819 | ||
7820 | return 0; | |
7821 | } | |
7822 | ||
69de3c6a | 7823 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 7824 | void |
69de3c6a | 7825 | breakpoint_re_set (void) |
c906108c SS |
7826 | { |
7827 | struct breakpoint *b, *temp; | |
7828 | enum language save_language; | |
7829 | int save_input_radix; | |
c5aa993b | 7830 | |
c906108c SS |
7831 | save_language = current_language->la_language; |
7832 | save_input_radix = input_radix; | |
7833 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7834 | { |
53a5351d | 7835 | /* Format possible error msg */ |
fe3f5fa8 | 7836 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
7837 | b->number); |
7838 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 7839 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 7840 | do_cleanups (cleanups); |
c5aa993b | 7841 | } |
c906108c SS |
7842 | set_language (save_language); |
7843 | input_radix = save_input_radix; | |
e62c965a | 7844 | |
69de3c6a | 7845 | create_overlay_event_breakpoint ("_ovly_debug_event"); |
0fd8e87f UW |
7846 | create_longjmp_master_breakpoint ("longjmp"); |
7847 | create_longjmp_master_breakpoint ("_longjmp"); | |
7848 | create_longjmp_master_breakpoint ("siglongjmp"); | |
7849 | create_longjmp_master_breakpoint ("_siglongjmp"); | |
c906108c SS |
7850 | } |
7851 | \f | |
c906108c SS |
7852 | /* Reset the thread number of this breakpoint: |
7853 | ||
7854 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 7855 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 7856 | void |
fba45db2 | 7857 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
7858 | { |
7859 | if (b->thread != -1) | |
7860 | { | |
39f77062 KB |
7861 | if (in_thread_list (inferior_ptid)) |
7862 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
7863 | } |
7864 | } | |
7865 | ||
03ac34d5 MS |
7866 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7867 | If from_tty is nonzero, it prints a message to that effect, | |
7868 | which ends with a period (no newline). */ | |
7869 | ||
c906108c | 7870 | void |
fba45db2 | 7871 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 7872 | { |
52f0bd74 | 7873 | struct breakpoint *b; |
c906108c SS |
7874 | |
7875 | if (count < 0) | |
7876 | count = 0; | |
7877 | ||
7878 | ALL_BREAKPOINTS (b) | |
7879 | if (b->number == bptnum) | |
c5aa993b JM |
7880 | { |
7881 | b->ignore_count = count; | |
221ea385 KS |
7882 | if (from_tty) |
7883 | { | |
7884 | if (count == 0) | |
a3f17187 | 7885 | printf_filtered (_("Will stop next time breakpoint %d is reached."), |
221ea385 KS |
7886 | bptnum); |
7887 | else if (count == 1) | |
a3f17187 | 7888 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
7889 | bptnum); |
7890 | else | |
a3f17187 | 7891 | printf_filtered (_("Will ignore next %d crossings of breakpoint %d."), |
221ea385 KS |
7892 | count, bptnum); |
7893 | } | |
c5aa993b | 7894 | breakpoints_changed (); |
383f836e | 7895 | observer_notify_breakpoint_modified (b->number); |
c5aa993b JM |
7896 | return; |
7897 | } | |
c906108c | 7898 | |
8a3fe4f8 | 7899 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
7900 | } |
7901 | ||
b2175913 MS |
7902 | void |
7903 | make_breakpoint_silent (struct breakpoint *b) | |
7904 | { | |
7905 | /* Silence the breakpoint. */ | |
7906 | b->silent = 1; | |
7907 | } | |
7908 | ||
c906108c SS |
7909 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
7910 | ||
7911 | static void | |
fba45db2 | 7912 | ignore_command (char *args, int from_tty) |
c906108c SS |
7913 | { |
7914 | char *p = args; | |
52f0bd74 | 7915 | int num; |
c906108c SS |
7916 | |
7917 | if (p == 0) | |
e2e0b3e5 | 7918 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 7919 | |
c906108c | 7920 | num = get_number (&p); |
5c44784c | 7921 | if (num == 0) |
8a3fe4f8 | 7922 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 7923 | if (*p == 0) |
8a3fe4f8 | 7924 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
7925 | |
7926 | set_ignore_count (num, | |
7927 | longest_to_int (value_as_long (parse_and_eval (p))), | |
7928 | from_tty); | |
221ea385 KS |
7929 | if (from_tty) |
7930 | printf_filtered ("\n"); | |
c906108c SS |
7931 | } |
7932 | \f | |
7933 | /* Call FUNCTION on each of the breakpoints | |
7934 | whose numbers are given in ARGS. */ | |
7935 | ||
7936 | static void | |
831662b3 | 7937 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) |
c906108c | 7938 | { |
52f0bd74 | 7939 | char *p = args; |
c906108c | 7940 | char *p1; |
52f0bd74 AC |
7941 | int num; |
7942 | struct breakpoint *b, *tmp; | |
11cf8741 | 7943 | int match; |
c906108c SS |
7944 | |
7945 | if (p == 0) | |
e2e0b3e5 | 7946 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c SS |
7947 | |
7948 | while (*p) | |
7949 | { | |
11cf8741 | 7950 | match = 0; |
c906108c | 7951 | p1 = p; |
c5aa993b | 7952 | |
5c44784c JM |
7953 | num = get_number_or_range (&p1); |
7954 | if (num == 0) | |
c5aa993b | 7955 | { |
8a3fe4f8 | 7956 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
7957 | } |
7958 | else | |
7959 | { | |
7960 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
7961 | if (b->number == num) | |
7962 | { | |
7963 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 7964 | match = 1; |
5c44784c JM |
7965 | function (b); |
7966 | if (related_breakpoint) | |
7967 | function (related_breakpoint); | |
11cf8741 | 7968 | break; |
5c44784c | 7969 | } |
11cf8741 | 7970 | if (match == 0) |
a3f17187 | 7971 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 7972 | } |
c906108c SS |
7973 | p = p1; |
7974 | } | |
7975 | } | |
7976 | ||
0d381245 VP |
7977 | static struct bp_location * |
7978 | find_location_by_number (char *number) | |
7979 | { | |
7980 | char *dot = strchr (number, '.'); | |
7981 | char *p1; | |
7982 | int bp_num; | |
7983 | int loc_num; | |
7984 | struct breakpoint *b; | |
7985 | struct bp_location *loc; | |
7986 | ||
7987 | *dot = '\0'; | |
7988 | ||
7989 | p1 = number; | |
7990 | bp_num = get_number_or_range (&p1); | |
7991 | if (bp_num == 0) | |
7992 | error (_("Bad breakpoint number '%s'"), number); | |
7993 | ||
7994 | ALL_BREAKPOINTS (b) | |
7995 | if (b->number == bp_num) | |
7996 | { | |
7997 | break; | |
7998 | } | |
7999 | ||
8000 | if (!b || b->number != bp_num) | |
8001 | error (_("Bad breakpoint number '%s'"), number); | |
8002 | ||
8003 | p1 = dot+1; | |
8004 | loc_num = get_number_or_range (&p1); | |
8005 | if (loc_num == 0) | |
8006 | error (_("Bad breakpoint location number '%s'"), number); | |
8007 | ||
8008 | --loc_num; | |
8009 | loc = b->loc; | |
8010 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
8011 | ; | |
8012 | if (!loc) | |
8013 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
8014 | ||
8015 | return loc; | |
8016 | } | |
8017 | ||
8018 | ||
1900040c MS |
8019 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
8020 | If from_tty is nonzero, it prints a message to that effect, | |
8021 | which ends with a period (no newline). */ | |
8022 | ||
c906108c | 8023 | void |
fba45db2 | 8024 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
8025 | { |
8026 | /* Never disable a watchpoint scope breakpoint; we want to | |
8027 | hit them when we leave scope so we can delete both the | |
8028 | watchpoint and its scope breakpoint at that time. */ | |
8029 | if (bpt->type == bp_watchpoint_scope) | |
8030 | return; | |
8031 | ||
c2c6d25f | 8032 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 8033 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
8034 | return; |
8035 | ||
b5de0fa7 | 8036 | bpt->enable_state = bp_disabled; |
c906108c | 8037 | |
b60e7edf | 8038 | update_global_location_list (0); |
c906108c | 8039 | |
383f836e | 8040 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
8041 | } |
8042 | ||
c906108c | 8043 | static void |
fba45db2 | 8044 | disable_command (char *args, int from_tty) |
c906108c | 8045 | { |
52f0bd74 | 8046 | struct breakpoint *bpt; |
c906108c SS |
8047 | if (args == 0) |
8048 | ALL_BREAKPOINTS (bpt) | |
8049 | switch (bpt->type) | |
c5aa993b JM |
8050 | { |
8051 | case bp_none: | |
8a3fe4f8 | 8052 | warning (_("attempted to disable apparently deleted breakpoint #%d?"), |
53a5351d | 8053 | bpt->number); |
c5aa993b JM |
8054 | continue; |
8055 | case bp_breakpoint: | |
1042e4c0 | 8056 | case bp_tracepoint: |
ce78b96d | 8057 | case bp_catchpoint: |
c5aa993b JM |
8058 | case bp_hardware_breakpoint: |
8059 | case bp_watchpoint: | |
8060 | case bp_hardware_watchpoint: | |
8061 | case bp_read_watchpoint: | |
8062 | case bp_access_watchpoint: | |
8063 | disable_breakpoint (bpt); | |
8064 | default: | |
8065 | continue; | |
8066 | } | |
0d381245 VP |
8067 | else if (strchr (args, '.')) |
8068 | { | |
8069 | struct bp_location *loc = find_location_by_number (args); | |
8070 | if (loc) | |
8071 | loc->enabled = 0; | |
b60e7edf | 8072 | update_global_location_list (0); |
0d381245 | 8073 | } |
c906108c SS |
8074 | else |
8075 | map_breakpoint_numbers (args, disable_breakpoint); | |
8076 | } | |
8077 | ||
8078 | static void | |
fba45db2 | 8079 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 8080 | { |
c906108c SS |
8081 | int target_resources_ok, other_type_used; |
8082 | struct value *mark; | |
8083 | ||
8084 | if (bpt->type == bp_hardware_breakpoint) | |
8085 | { | |
8086 | int i; | |
c5aa993b | 8087 | i = hw_breakpoint_used_count (); |
53a5351d | 8088 | target_resources_ok = |
d92524f1 | 8089 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 8090 | i + 1, 0); |
c906108c | 8091 | if (target_resources_ok == 0) |
8a3fe4f8 | 8092 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 8093 | else if (target_resources_ok < 0) |
8a3fe4f8 | 8094 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
8095 | } |
8096 | ||
059fb39f PM |
8097 | if (bpt->type == bp_watchpoint |
8098 | || bpt->type == bp_hardware_watchpoint | |
8099 | || bpt->type == bp_read_watchpoint | |
8100 | || bpt->type == bp_access_watchpoint) | |
c906108c | 8101 | { |
dde02812 ES |
8102 | struct gdb_exception e; |
8103 | ||
8104 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 8105 | { |
dde02812 | 8106 | update_watchpoint (bpt, 1 /* reparse */); |
c906108c | 8107 | } |
dde02812 | 8108 | if (e.reason < 0) |
c5aa993b | 8109 | { |
dde02812 ES |
8110 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
8111 | bpt->number); | |
8112 | return; | |
c5aa993b | 8113 | } |
c906108c | 8114 | } |
0101ce28 | 8115 | |
b4c291bb KH |
8116 | if (bpt->enable_state != bp_permanent) |
8117 | bpt->enable_state = bp_enabled; | |
8118 | bpt->disposition = disposition; | |
b60e7edf | 8119 | update_global_location_list (1); |
b4c291bb KH |
8120 | breakpoints_changed (); |
8121 | ||
383f836e | 8122 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
8123 | } |
8124 | ||
fe3f5fa8 | 8125 | |
c906108c | 8126 | void |
fba45db2 | 8127 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
8128 | { |
8129 | do_enable_breakpoint (bpt, bpt->disposition); | |
8130 | } | |
8131 | ||
8132 | /* The enable command enables the specified breakpoints (or all defined | |
8133 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 8134 | in stopping the inferior. */ |
c906108c | 8135 | |
c906108c | 8136 | static void |
fba45db2 | 8137 | enable_command (char *args, int from_tty) |
c906108c | 8138 | { |
52f0bd74 | 8139 | struct breakpoint *bpt; |
c906108c SS |
8140 | if (args == 0) |
8141 | ALL_BREAKPOINTS (bpt) | |
8142 | switch (bpt->type) | |
c5aa993b JM |
8143 | { |
8144 | case bp_none: | |
8a3fe4f8 | 8145 | warning (_("attempted to enable apparently deleted breakpoint #%d?"), |
53a5351d | 8146 | bpt->number); |
c5aa993b JM |
8147 | continue; |
8148 | case bp_breakpoint: | |
1042e4c0 | 8149 | case bp_tracepoint: |
ce78b96d | 8150 | case bp_catchpoint: |
c5aa993b JM |
8151 | case bp_hardware_breakpoint: |
8152 | case bp_watchpoint: | |
8153 | case bp_hardware_watchpoint: | |
8154 | case bp_read_watchpoint: | |
8155 | case bp_access_watchpoint: | |
8156 | enable_breakpoint (bpt); | |
8157 | default: | |
8158 | continue; | |
8159 | } | |
0d381245 VP |
8160 | else if (strchr (args, '.')) |
8161 | { | |
8162 | struct bp_location *loc = find_location_by_number (args); | |
8163 | if (loc) | |
8164 | loc->enabled = 1; | |
b60e7edf | 8165 | update_global_location_list (1); |
0d381245 | 8166 | } |
c906108c SS |
8167 | else |
8168 | map_breakpoint_numbers (args, enable_breakpoint); | |
8169 | } | |
8170 | ||
8171 | static void | |
fba45db2 | 8172 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c | 8173 | { |
b5de0fa7 | 8174 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
8175 | } |
8176 | ||
c906108c | 8177 | static void |
fba45db2 | 8178 | enable_once_command (char *args, int from_tty) |
c906108c SS |
8179 | { |
8180 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
8181 | } | |
8182 | ||
8183 | static void | |
fba45db2 | 8184 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c | 8185 | { |
b5de0fa7 | 8186 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
8187 | } |
8188 | ||
c906108c | 8189 | static void |
fba45db2 | 8190 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
8191 | { |
8192 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
8193 | } | |
8194 | \f | |
fa8d40ab JJ |
8195 | static void |
8196 | set_breakpoint_cmd (char *args, int from_tty) | |
8197 | { | |
8198 | } | |
8199 | ||
8200 | static void | |
8201 | show_breakpoint_cmd (char *args, int from_tty) | |
8202 | { | |
8203 | } | |
8204 | ||
c906108c SS |
8205 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
8206 | ||
8207 | struct symtabs_and_lines | |
fba45db2 | 8208 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
8209 | { |
8210 | struct symtabs_and_lines sals; | |
8211 | if (string == 0) | |
8a3fe4f8 | 8212 | error (_("Empty line specification.")); |
c906108c SS |
8213 | if (default_breakpoint_valid) |
8214 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
8215 | default_breakpoint_symtab, |
8216 | default_breakpoint_line, | |
68219205 | 8217 | (char ***) NULL, NULL); |
c906108c SS |
8218 | else |
8219 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 8220 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c | 8221 | if (*string) |
8a3fe4f8 | 8222 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
8223 | return sals; |
8224 | } | |
8181d85f DJ |
8225 | |
8226 | /* Create and insert a raw software breakpoint at PC. Return an | |
8227 | identifier, which should be used to remove the breakpoint later. | |
8228 | In general, places which call this should be using something on the | |
8229 | breakpoint chain instead; this function should be eliminated | |
8230 | someday. */ | |
8231 | ||
8232 | void * | |
8233 | deprecated_insert_raw_breakpoint (CORE_ADDR pc) | |
8234 | { | |
8235 | struct bp_target_info *bp_tgt; | |
8236 | ||
8237 | bp_tgt = xmalloc (sizeof (struct bp_target_info)); | |
8238 | memset (bp_tgt, 0, sizeof (struct bp_target_info)); | |
8239 | ||
8240 | bp_tgt->placed_address = pc; | |
8241 | if (target_insert_breakpoint (bp_tgt) != 0) | |
8242 | { | |
8243 | /* Could not insert the breakpoint. */ | |
8244 | xfree (bp_tgt); | |
8245 | return NULL; | |
8246 | } | |
8247 | ||
8248 | return bp_tgt; | |
8249 | } | |
8250 | ||
8251 | /* Remove a breakpoint BP inserted by deprecated_insert_raw_breakpoint. */ | |
8252 | ||
8253 | int | |
8254 | deprecated_remove_raw_breakpoint (void *bp) | |
8255 | { | |
8256 | struct bp_target_info *bp_tgt = bp; | |
8257 | int ret; | |
8258 | ||
8259 | ret = target_remove_breakpoint (bp_tgt); | |
8260 | xfree (bp_tgt); | |
8261 | ||
8262 | return ret; | |
8263 | } | |
8264 | ||
8265 | /* One (or perhaps two) breakpoints used for software single stepping. */ | |
8266 | ||
8267 | static void *single_step_breakpoints[2]; | |
8268 | ||
8269 | /* Create and insert a breakpoint for software single step. */ | |
8270 | ||
8271 | void | |
8272 | insert_single_step_breakpoint (CORE_ADDR next_pc) | |
8273 | { | |
8274 | void **bpt_p; | |
8275 | ||
8276 | if (single_step_breakpoints[0] == NULL) | |
8277 | bpt_p = &single_step_breakpoints[0]; | |
8278 | else | |
8279 | { | |
8280 | gdb_assert (single_step_breakpoints[1] == NULL); | |
8281 | bpt_p = &single_step_breakpoints[1]; | |
8282 | } | |
8283 | ||
8284 | /* NOTE drow/2006-04-11: A future improvement to this function would be | |
8285 | to only create the breakpoints once, and actually put them on the | |
8286 | breakpoint chain. That would let us use set_raw_breakpoint. We could | |
8287 | adjust the addresses each time they were needed. Doing this requires | |
8288 | corresponding changes elsewhere where single step breakpoints are | |
8289 | handled, however. So, for now, we use this. */ | |
8290 | ||
8291 | *bpt_p = deprecated_insert_raw_breakpoint (next_pc); | |
8292 | if (*bpt_p == NULL) | |
1893a4c0 | 8293 | error (_("Could not insert single-step breakpoint at 0x%s"), |
8181d85f DJ |
8294 | paddr_nz (next_pc)); |
8295 | } | |
8296 | ||
8297 | /* Remove and delete any breakpoints used for software single step. */ | |
8298 | ||
8299 | void | |
8300 | remove_single_step_breakpoints (void) | |
8301 | { | |
8302 | gdb_assert (single_step_breakpoints[0] != NULL); | |
8303 | ||
8304 | /* See insert_single_step_breakpoint for more about this deprecated | |
8305 | call. */ | |
8306 | deprecated_remove_raw_breakpoint (single_step_breakpoints[0]); | |
8307 | single_step_breakpoints[0] = NULL; | |
8308 | ||
8309 | if (single_step_breakpoints[1] != NULL) | |
8310 | { | |
8311 | deprecated_remove_raw_breakpoint (single_step_breakpoints[1]); | |
8312 | single_step_breakpoints[1] = NULL; | |
8313 | } | |
8314 | } | |
8315 | ||
1aafd4da UW |
8316 | /* Check whether a software single-step breakpoint is inserted at PC. */ |
8317 | ||
8318 | static int | |
8319 | single_step_breakpoint_inserted_here_p (CORE_ADDR pc) | |
8320 | { | |
8321 | int i; | |
8322 | ||
8323 | for (i = 0; i < 2; i++) | |
8324 | { | |
8325 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
8326 | if (bp_tgt && bp_tgt->placed_address == pc) | |
8327 | return 1; | |
8328 | } | |
8329 | ||
8330 | return 0; | |
8331 | } | |
8332 | ||
1042e4c0 SS |
8333 | /* Tracepoint-specific operations. */ |
8334 | ||
8335 | /* Set tracepoint count to NUM. */ | |
8336 | static void | |
8337 | set_tracepoint_count (int num) | |
8338 | { | |
8339 | tracepoint_count = num; | |
4fa62494 | 8340 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
8341 | } |
8342 | ||
8343 | void | |
8344 | trace_command (char *arg, int from_tty) | |
8345 | { | |
8346 | break_command_really (arg, | |
8347 | NULL, 0, 1 /* parse arg */, | |
8348 | 0 /* tempflag */, 0 /* hardwareflag */, | |
8349 | 1 /* traceflag */, | |
8350 | 0 /* Ignore count */, | |
8351 | pending_break_support, | |
8352 | NULL, | |
8353 | from_tty, | |
8354 | 1 /* enabled */); | |
8355 | set_tracepoint_count (breakpoint_count); | |
8356 | } | |
8357 | ||
8358 | /* Print information on tracepoint number TPNUM_EXP, or all if | |
8359 | omitted. */ | |
8360 | ||
8361 | static void | |
8362 | tracepoints_info (char *tpnum_exp, int from_tty) | |
8363 | { | |
8364 | struct breakpoint *b; | |
8365 | int tps_to_list = 0; | |
8366 | ||
8367 | /* In the no-arguments case, say "No tracepoints" if none found. */ | |
8368 | if (tpnum_exp == 0) | |
8369 | { | |
8370 | ALL_TRACEPOINTS (b) | |
8371 | { | |
8372 | if (b->number >= 0) | |
8373 | { | |
8374 | tps_to_list = 1; | |
8375 | break; | |
8376 | } | |
8377 | } | |
8378 | if (!tps_to_list) | |
8379 | { | |
8380 | ui_out_message (uiout, 0, "No tracepoints.\n"); | |
8381 | return; | |
8382 | } | |
8383 | } | |
8384 | ||
8385 | /* Otherwise be the same as "info break". */ | |
8386 | breakpoints_info (tpnum_exp, from_tty); | |
8387 | } | |
8388 | ||
8389 | /* The 'enable trace' command enables tracepoints. | |
8390 | Not supported by all targets. */ | |
8391 | static void | |
8392 | enable_trace_command (char *args, int from_tty) | |
8393 | { | |
8394 | enable_command (args, from_tty); | |
8395 | } | |
8396 | ||
8397 | /* The 'disable trace' command disables tracepoints. | |
8398 | Not supported by all targets. */ | |
8399 | static void | |
8400 | disable_trace_command (char *args, int from_tty) | |
8401 | { | |
8402 | disable_command (args, from_tty); | |
8403 | } | |
8404 | ||
8405 | /* Remove a tracepoint (or all if no argument) */ | |
8406 | static void | |
8407 | delete_trace_command (char *arg, int from_tty) | |
8408 | { | |
8409 | struct breakpoint *b, *temp; | |
8410 | ||
8411 | dont_repeat (); | |
8412 | ||
8413 | if (arg == 0) | |
8414 | { | |
8415 | int breaks_to_delete = 0; | |
8416 | ||
8417 | /* Delete all breakpoints if no argument. | |
8418 | Do not delete internal or call-dummy breakpoints, these | |
8419 | have to be deleted with an explicit breakpoint number argument. */ | |
8420 | ALL_TRACEPOINTS (b) | |
8421 | { | |
8422 | if (b->number >= 0) | |
8423 | { | |
8424 | breaks_to_delete = 1; | |
8425 | break; | |
8426 | } | |
8427 | } | |
8428 | ||
8429 | /* Ask user only if there are some breakpoints to delete. */ | |
8430 | if (!from_tty | |
8431 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
8432 | { | |
8433 | ALL_BREAKPOINTS_SAFE (b, temp) | |
8434 | { | |
059fb39f PM |
8435 | if (b->type == bp_tracepoint |
8436 | && b->number >= 0) | |
1042e4c0 SS |
8437 | delete_breakpoint (b); |
8438 | } | |
8439 | } | |
8440 | } | |
8441 | else | |
8442 | map_breakpoint_numbers (arg, delete_breakpoint); | |
8443 | } | |
8444 | ||
8445 | /* Set passcount for tracepoint. | |
8446 | ||
8447 | First command argument is passcount, second is tracepoint number. | |
8448 | If tracepoint number omitted, apply to most recently defined. | |
8449 | Also accepts special argument "all". */ | |
8450 | ||
8451 | static void | |
8452 | trace_pass_command (char *args, int from_tty) | |
8453 | { | |
8454 | struct breakpoint *t1 = (struct breakpoint *) -1, *t2; | |
8455 | unsigned int count; | |
8456 | int all = 0; | |
8457 | ||
8458 | if (args == 0 || *args == 0) | |
8459 | error (_("passcount command requires an argument (count + optional TP num)")); | |
8460 | ||
8461 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ | |
8462 | ||
8463 | while (*args && isspace ((int) *args)) | |
8464 | args++; | |
8465 | ||
8466 | if (*args && strncasecmp (args, "all", 3) == 0) | |
8467 | { | |
8468 | args += 3; /* Skip special argument "all". */ | |
8469 | all = 1; | |
8470 | if (*args) | |
8471 | error (_("Junk at end of arguments.")); | |
8472 | } | |
8473 | else | |
8474 | t1 = get_tracepoint_by_number (&args, 1, 1); | |
8475 | ||
8476 | do | |
8477 | { | |
8478 | if (t1) | |
8479 | { | |
8480 | ALL_TRACEPOINTS (t2) | |
8481 | if (t1 == (struct breakpoint *) -1 || t1 == t2) | |
8482 | { | |
8483 | t2->pass_count = count; | |
8484 | observer_notify_tracepoint_modified (t2->number); | |
8485 | if (from_tty) | |
8486 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
8487 | t2->number, count); | |
8488 | } | |
8489 | if (! all && *args) | |
8490 | t1 = get_tracepoint_by_number (&args, 1, 0); | |
8491 | } | |
8492 | } | |
8493 | while (*args); | |
8494 | } | |
8495 | ||
8496 | struct breakpoint * | |
8497 | get_tracepoint (int num) | |
8498 | { | |
8499 | struct breakpoint *t; | |
8500 | ||
8501 | ALL_TRACEPOINTS (t) | |
8502 | if (t->number == num) | |
8503 | return t; | |
8504 | ||
8505 | return NULL; | |
8506 | } | |
8507 | ||
8508 | /* Utility: parse a tracepoint number and look it up in the list. | |
8509 | If MULTI_P is true, there might be a range of tracepoints in ARG. | |
8510 | if OPTIONAL_P is true, then if the argument is missing, the most | |
8511 | recent tracepoint (tracepoint_count) is returned. */ | |
8512 | struct breakpoint * | |
8513 | get_tracepoint_by_number (char **arg, int multi_p, int optional_p) | |
8514 | { | |
8515 | extern int tracepoint_count; | |
8516 | struct breakpoint *t; | |
8517 | int tpnum; | |
8518 | char *instring = arg == NULL ? NULL : *arg; | |
8519 | ||
8520 | if (arg == NULL || *arg == NULL || ! **arg) | |
8521 | { | |
8522 | if (optional_p) | |
8523 | tpnum = tracepoint_count; | |
8524 | else | |
8525 | error_no_arg (_("tracepoint number")); | |
8526 | } | |
8527 | else | |
8528 | tpnum = multi_p ? get_number_or_range (arg) : get_number (arg); | |
8529 | ||
8530 | if (tpnum <= 0) | |
8531 | { | |
8532 | if (instring && *instring) | |
8533 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
8534 | instring); | |
8535 | else | |
8536 | printf_filtered (_("Tracepoint argument missing and no previous tracepoint\n")); | |
8537 | return NULL; | |
8538 | } | |
8539 | ||
8540 | ALL_TRACEPOINTS (t) | |
8541 | if (t->number == tpnum) | |
8542 | { | |
8543 | return t; | |
8544 | } | |
8545 | ||
8546 | /* FIXME: if we are in the middle of a range we don't want to give | |
8547 | a message. The current interface to get_number_or_range doesn't | |
8548 | allow us to discover this. */ | |
8549 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); | |
8550 | return NULL; | |
8551 | } | |
8552 | ||
8553 | /* save-tracepoints command */ | |
8554 | static void | |
8555 | tracepoint_save_command (char *args, int from_tty) | |
8556 | { | |
8557 | struct breakpoint *tp; | |
8558 | int any_tp = 0; | |
8559 | struct action_line *line; | |
8560 | FILE *fp; | |
8561 | char *i1 = " ", *i2 = " "; | |
8562 | char *indent, *actionline, *pathname; | |
8563 | char tmp[40]; | |
8564 | struct cleanup *cleanup; | |
8565 | ||
8566 | if (args == 0 || *args == 0) | |
8567 | error (_("Argument required (file name in which to save tracepoints)")); | |
8568 | ||
8569 | /* See if we have anything to save. */ | |
8570 | ALL_TRACEPOINTS (tp) | |
8571 | { | |
8572 | any_tp = 1; | |
8573 | break; | |
8574 | } | |
8575 | if (!any_tp) | |
8576 | { | |
8577 | warning (_("save-tracepoints: no tracepoints to save.")); | |
8578 | return; | |
8579 | } | |
8580 | ||
8581 | pathname = tilde_expand (args); | |
8582 | cleanup = make_cleanup (xfree, pathname); | |
059fb39f PM |
8583 | fp = fopen (pathname, "w"); |
8584 | if (!fp) | |
1042e4c0 SS |
8585 | error (_("Unable to open file '%s' for saving tracepoints (%s)"), |
8586 | args, safe_strerror (errno)); | |
8587 | make_cleanup_fclose (fp); | |
8588 | ||
8589 | ALL_TRACEPOINTS (tp) | |
8590 | { | |
8591 | if (tp->addr_string) | |
8592 | fprintf (fp, "trace %s\n", tp->addr_string); | |
8593 | else | |
8594 | { | |
8595 | sprintf_vma (tmp, tp->loc->address); | |
8596 | fprintf (fp, "trace *0x%s\n", tmp); | |
8597 | } | |
8598 | ||
8599 | if (tp->pass_count) | |
8600 | fprintf (fp, " passcount %d\n", tp->pass_count); | |
8601 | ||
8602 | if (tp->actions) | |
8603 | { | |
8604 | fprintf (fp, " actions\n"); | |
8605 | indent = i1; | |
8606 | for (line = tp->actions; line; line = line->next) | |
8607 | { | |
8608 | struct cmd_list_element *cmd; | |
8609 | ||
8610 | QUIT; /* allow user to bail out with ^C */ | |
8611 | actionline = line->action; | |
8612 | while (isspace ((int) *actionline)) | |
8613 | actionline++; | |
8614 | ||
8615 | fprintf (fp, "%s%s\n", indent, actionline); | |
8616 | if (*actionline != '#') /* skip for comment lines */ | |
8617 | { | |
8618 | cmd = lookup_cmd (&actionline, cmdlist, "", -1, 1); | |
8619 | if (cmd == 0) | |
8620 | error (_("Bad action list item: %s"), actionline); | |
8621 | if (cmd_cfunc_eq (cmd, while_stepping_pseudocommand)) | |
8622 | indent = i2; | |
8623 | else if (cmd_cfunc_eq (cmd, end_actions_pseudocommand)) | |
8624 | indent = i1; | |
8625 | } | |
8626 | } | |
8627 | } | |
8628 | } | |
8629 | do_cleanups (cleanup); | |
8630 | if (from_tty) | |
8631 | printf_filtered (_("Tracepoints saved to file '%s'.\n"), args); | |
8632 | return; | |
8633 | } | |
8634 | ||
8635 | /* Create a vector of all tracepoints. */ | |
8636 | ||
8637 | VEC(breakpoint_p) * | |
8638 | all_tracepoints () | |
8639 | { | |
8640 | VEC(breakpoint_p) *tp_vec = 0; | |
8641 | struct breakpoint *tp; | |
8642 | ||
8643 | ALL_TRACEPOINTS (tp) | |
8644 | { | |
8645 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
8646 | } | |
8647 | ||
8648 | return tp_vec; | |
8649 | } | |
8650 | ||
c906108c | 8651 | \f |
31e2b00f AS |
8652 | /* This help string is used for the break, hbreak, tbreak and thbreak commands. |
8653 | It is defined as a macro to prevent duplication. | |
8654 | COMMAND should be a string constant containing the name of the command. */ | |
8655 | #define BREAK_ARGS_HELP(command) \ | |
8656 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
8657 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
8658 | If a line number is specified, break at start of code for that line.\n\ | |
8659 | If a function is specified, break at start of code for that function.\n\ | |
8660 | If an address is specified, break at that exact address.\n\ | |
8661 | With no LOCATION, uses current execution address of selected stack frame.\n\ | |
8662 | This is useful for breaking on return to a stack frame.\n\ | |
8663 | \n\ | |
8664 | THREADNUM is the number from \"info threads\".\n\ | |
8665 | CONDITION is a boolean expression.\n\ | |
8666 | \n\ | |
8667 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
8668 | \n\ | |
8669 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
8670 | ||
44feb3ce TT |
8671 | /* List of subcommands for "catch". */ |
8672 | static struct cmd_list_element *catch_cmdlist; | |
8673 | ||
8674 | /* List of subcommands for "tcatch". */ | |
8675 | static struct cmd_list_element *tcatch_cmdlist; | |
8676 | ||
8677 | /* Like add_cmd, but add the command to both the "catch" and "tcatch" | |
8678 | lists, and pass some additional user data to the command function. */ | |
8679 | static void | |
8680 | add_catch_command (char *name, char *docstring, | |
8681 | void (*sfunc) (char *args, int from_tty, | |
8682 | struct cmd_list_element *command), | |
8683 | void *user_data_catch, | |
8684 | void *user_data_tcatch) | |
8685 | { | |
8686 | struct cmd_list_element *command; | |
8687 | ||
8688 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
8689 | &catch_cmdlist); | |
8690 | set_cmd_sfunc (command, sfunc); | |
8691 | set_cmd_context (command, user_data_catch); | |
8692 | ||
8693 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
8694 | &tcatch_cmdlist); | |
8695 | set_cmd_sfunc (command, sfunc); | |
8696 | set_cmd_context (command, user_data_tcatch); | |
8697 | } | |
8698 | ||
c906108c | 8699 | void |
fba45db2 | 8700 | _initialize_breakpoint (void) |
c906108c | 8701 | { |
fa8d40ab JJ |
8702 | static struct cmd_list_element *breakpoint_set_cmdlist; |
8703 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
c906108c SS |
8704 | struct cmd_list_element *c; |
8705 | ||
84acb35a | 8706 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
84acb35a | 8707 | |
c906108c SS |
8708 | breakpoint_chain = 0; |
8709 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
8710 | before a breakpoint is set. */ | |
8711 | breakpoint_count = 0; | |
8712 | ||
1042e4c0 SS |
8713 | tracepoint_count = 0; |
8714 | ||
1bedd215 AC |
8715 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
8716 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
8717 | Usage is `ignore N COUNT'.")); | |
c906108c | 8718 | if (xdb_commands) |
c5aa993b | 8719 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 8720 | |
1bedd215 AC |
8721 | add_com ("commands", class_breakpoint, commands_command, _("\ |
8722 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
8723 | Give breakpoint number as argument after \"commands\".\n\ |
8724 | With no argument, the targeted breakpoint is the last one set.\n\ | |
8725 | The commands themselves follow starting on the next line.\n\ | |
8726 | Type a line containing \"end\" to indicate the end of them.\n\ | |
8727 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 8728 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 8729 | |
1bedd215 AC |
8730 | add_com ("condition", class_breakpoint, condition_command, _("\ |
8731 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 8732 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 8733 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 8734 | |
1bedd215 | 8735 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 8736 | Set a temporary breakpoint.\n\ |
c906108c SS |
8737 | Like \"break\" except the breakpoint is only temporary,\n\ |
8738 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
8739 | by using \"enable delete\" on the breakpoint number.\n\ |
8740 | \n" | |
8741 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 8742 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 8743 | |
1bedd215 | 8744 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
31e2b00f | 8745 | Set a hardware assisted breakpoint.\n\ |
c906108c | 8746 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
8747 | some target hardware may not have this support.\n\ |
8748 | \n" | |
8749 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 8750 | set_cmd_completer (c, location_completer); |
c906108c | 8751 | |
1bedd215 | 8752 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 8753 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 8754 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
8755 | so it will be deleted when hit.\n\ |
8756 | \n" | |
8757 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 8758 | set_cmd_completer (c, location_completer); |
c906108c | 8759 | |
1bedd215 AC |
8760 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
8761 | Enable some breakpoints.\n\ | |
c906108c SS |
8762 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8763 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8764 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8765 | With a subcommand you can enable temporarily."), |
c906108c SS |
8766 | &enablelist, "enable ", 1, &cmdlist); |
8767 | if (xdb_commands) | |
1bedd215 AC |
8768 | add_com ("ab", class_breakpoint, enable_command, _("\ |
8769 | Enable some breakpoints.\n\ | |
c906108c SS |
8770 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8771 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8772 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8773 | With a subcommand you can enable temporarily.")); |
c906108c SS |
8774 | |
8775 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
8776 | ||
1bedd215 AC |
8777 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
8778 | Enable some breakpoints.\n\ | |
c906108c SS |
8779 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8780 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8781 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 8782 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 8783 | |
1a966eab AC |
8784 | add_cmd ("once", no_class, enable_once_command, _("\ |
8785 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8786 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8787 | &enablebreaklist); |
8788 | ||
1a966eab AC |
8789 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8790 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8791 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8792 | &enablebreaklist); |
8793 | ||
1a966eab AC |
8794 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8795 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8796 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8797 | &enablelist); |
8798 | ||
1a966eab AC |
8799 | add_cmd ("once", no_class, enable_once_command, _("\ |
8800 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8801 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8802 | &enablelist); |
8803 | ||
1bedd215 AC |
8804 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
8805 | Disable some breakpoints.\n\ | |
c906108c SS |
8806 | Arguments are breakpoint numbers with spaces in between.\n\ |
8807 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 8808 | A disabled breakpoint is not forgotten, but has no effect until reenabled."), |
c906108c SS |
8809 | &disablelist, "disable ", 1, &cmdlist); |
8810 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
8811 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
8812 | if (xdb_commands) | |
1bedd215 AC |
8813 | add_com ("sb", class_breakpoint, disable_command, _("\ |
8814 | Disable some breakpoints.\n\ | |
c906108c SS |
8815 | Arguments are breakpoint numbers with spaces in between.\n\ |
8816 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 8817 | A disabled breakpoint is not forgotten, but has no effect until reenabled.")); |
c906108c | 8818 | |
1a966eab AC |
8819 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
8820 | Disable some breakpoints.\n\ | |
c906108c SS |
8821 | Arguments are breakpoint numbers with spaces in between.\n\ |
8822 | To disable all breakpoints, give no argument.\n\ | |
8823 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
1a966eab | 8824 | This command may be abbreviated \"disable\"."), |
c906108c SS |
8825 | &disablelist); |
8826 | ||
1bedd215 AC |
8827 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
8828 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
8829 | Arguments are breakpoint numbers with spaces in between.\n\ |
8830 | To delete all breakpoints, give no argument.\n\ | |
8831 | \n\ | |
8832 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 8833 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
8834 | &deletelist, "delete ", 1, &cmdlist); |
8835 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 8836 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 8837 | if (xdb_commands) |
1bedd215 AC |
8838 | add_com ("db", class_breakpoint, delete_command, _("\ |
8839 | Delete some breakpoints.\n\ | |
c906108c | 8840 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 8841 | To delete all breakpoints, give no argument.\n")); |
c906108c | 8842 | |
1a966eab AC |
8843 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
8844 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
8845 | Arguments are breakpoint numbers with spaces in between.\n\ |
8846 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 8847 | This command may be abbreviated \"delete\"."), |
c906108c SS |
8848 | &deletelist); |
8849 | ||
1bedd215 AC |
8850 | add_com ("clear", class_breakpoint, clear_command, _("\ |
8851 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
8852 | Argument may be line number, function name, or \"*\" and an address.\n\ |
8853 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
8854 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
8855 | If an address is specified, breakpoints at that address are cleared.\n\ |
8856 | \n\ | |
8857 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
8858 | is executing in.\n\ |
8859 | \n\ | |
1bedd215 | 8860 | See also the \"delete\" command which clears breakpoints by number.")); |
c906108c | 8861 | |
1bedd215 | 8862 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
8863 | Set breakpoint at specified line or function.\n" |
8864 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 8865 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 8866 | |
c906108c SS |
8867 | add_com_alias ("b", "break", class_run, 1); |
8868 | add_com_alias ("br", "break", class_run, 1); | |
8869 | add_com_alias ("bre", "break", class_run, 1); | |
8870 | add_com_alias ("brea", "break", class_run, 1); | |
8871 | ||
7681d515 PM |
8872 | if (xdb_commands) |
8873 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
c906108c SS |
8874 | |
8875 | if (dbx_commands) | |
8876 | { | |
1bedd215 AC |
8877 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
8878 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
8879 | &stoplist, "stop ", 1, &cmdlist); |
8880 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 8881 | _("Break in function or address."), &stoplist); |
c5aa993b | 8882 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 8883 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
8884 | add_com ("status", class_info, breakpoints_info, _("\ |
8885 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8886 | The \"Type\" column indicates one of:\n\ |
8887 | \tbreakpoint - normal breakpoint\n\ | |
8888 | \twatchpoint - watchpoint\n\ | |
8889 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8890 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8891 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8892 | address and file/line number respectively.\n\ |
8893 | \n\ | |
8894 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8895 | are set to the address of the last breakpoint listed unless the command\n\ |
8896 | is prefixed with \"server \".\n\n\ | |
c906108c | 8897 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8898 | breakpoint set.")); |
c906108c SS |
8899 | } |
8900 | ||
1bedd215 AC |
8901 | add_info ("breakpoints", breakpoints_info, _("\ |
8902 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8903 | The \"Type\" column indicates one of:\n\ |
8904 | \tbreakpoint - normal breakpoint\n\ | |
8905 | \twatchpoint - watchpoint\n\ | |
8906 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8907 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8908 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8909 | address and file/line number respectively.\n\ |
8910 | \n\ | |
8911 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8912 | are set to the address of the last breakpoint listed unless the command\n\ |
8913 | is prefixed with \"server \".\n\n\ | |
c906108c | 8914 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8915 | breakpoint set.")); |
c906108c SS |
8916 | |
8917 | if (xdb_commands) | |
1bedd215 AC |
8918 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
8919 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8920 | The \"Type\" column indicates one of:\n\ |
8921 | \tbreakpoint - normal breakpoint\n\ | |
8922 | \twatchpoint - watchpoint\n\ | |
8923 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8924 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8925 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8926 | address and file/line number respectively.\n\ |
8927 | \n\ | |
8928 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8929 | are set to the address of the last breakpoint listed unless the command\n\ |
8930 | is prefixed with \"server \".\n\n\ | |
c906108c | 8931 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8932 | breakpoint set.")); |
c906108c | 8933 | |
1a966eab AC |
8934 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
8935 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8936 | The \"Type\" column indicates one of:\n\ |
8937 | \tbreakpoint - normal breakpoint\n\ | |
8938 | \twatchpoint - watchpoint\n\ | |
8939 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
8940 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
8941 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
8942 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
8943 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
8944 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
8945 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
8946 | address and file/line number respectively.\n\ |
8947 | \n\ | |
8948 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8949 | are set to the address of the last breakpoint listed unless the command\n\ |
8950 | is prefixed with \"server \".\n\n\ | |
c906108c | 8951 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 8952 | breakpoint set."), |
c906108c SS |
8953 | &maintenanceinfolist); |
8954 | ||
44feb3ce TT |
8955 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
8956 | Set catchpoints to catch events."), | |
8957 | &catch_cmdlist, "catch ", | |
8958 | 0/*allow-unknown*/, &cmdlist); | |
8959 | ||
8960 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
8961 | Set temporary catchpoints to catch events."), | |
8962 | &tcatch_cmdlist, "tcatch ", | |
8963 | 0/*allow-unknown*/, &cmdlist); | |
8964 | ||
8965 | /* Add catch and tcatch sub-commands. */ | |
8966 | add_catch_command ("catch", _("\ | |
8967 | Catch an exception, when caught.\n\ | |
8968 | With an argument, catch only exceptions with the given name."), | |
8969 | catch_catch_command, | |
8970 | CATCH_PERMANENT, | |
8971 | CATCH_TEMPORARY); | |
8972 | add_catch_command ("throw", _("\ | |
8973 | Catch an exception, when thrown.\n\ | |
8974 | With an argument, catch only exceptions with the given name."), | |
8975 | catch_throw_command, | |
8976 | CATCH_PERMANENT, | |
8977 | CATCH_TEMPORARY); | |
8978 | add_catch_command ("fork", _("Catch calls to fork."), | |
8979 | catch_fork_command_1, | |
8980 | (void *) (uintptr_t) catch_fork_permanent, | |
8981 | (void *) (uintptr_t) catch_fork_temporary); | |
8982 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
8983 | catch_fork_command_1, | |
8984 | (void *) (uintptr_t) catch_vfork_permanent, | |
8985 | (void *) (uintptr_t) catch_vfork_temporary); | |
8986 | add_catch_command ("exec", _("Catch calls to exec."), | |
8987 | catch_exec_command_1, | |
8988 | CATCH_PERMANENT, | |
8989 | CATCH_TEMPORARY); | |
44feb3ce TT |
8990 | add_catch_command ("exception", _("\ |
8991 | Catch Ada exceptions, when raised.\n\ | |
8992 | With an argument, catch only exceptions with the given name."), | |
8993 | catch_ada_exception_command, | |
8994 | CATCH_PERMANENT, | |
8995 | CATCH_TEMPORARY); | |
8996 | add_catch_command ("assert", _("\ | |
8997 | Catch failed Ada assertions, when raised.\n\ | |
8998 | With an argument, catch only exceptions with the given name."), | |
8999 | catch_assert_command, | |
9000 | CATCH_PERMANENT, | |
9001 | CATCH_TEMPORARY); | |
c5aa993b | 9002 | |
1bedd215 AC |
9003 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
9004 | Set a watchpoint for an expression.\n\ | |
c906108c | 9005 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 9006 | an expression changes.")); |
65d12d83 | 9007 | set_cmd_completer (c, expression_completer); |
c906108c | 9008 | |
1bedd215 AC |
9009 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
9010 | Set a read watchpoint for an expression.\n\ | |
c906108c | 9011 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 9012 | an expression is read.")); |
65d12d83 | 9013 | set_cmd_completer (c, expression_completer); |
c906108c | 9014 | |
1bedd215 AC |
9015 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
9016 | Set a watchpoint for an expression.\n\ | |
c906108c | 9017 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 9018 | an expression is either read or written.")); |
65d12d83 | 9019 | set_cmd_completer (c, expression_completer); |
c906108c SS |
9020 | |
9021 | add_info ("watchpoints", breakpoints_info, | |
1bedd215 | 9022 | _("Synonym for ``info breakpoints''.")); |
c906108c SS |
9023 | |
9024 | ||
920d2a44 AC |
9025 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
9026 | respond to changes - contrary to the description. */ | |
85c07804 AC |
9027 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
9028 | &can_use_hw_watchpoints, _("\ | |
9029 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
9030 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
9031 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
9032 | such is available. (However, any hardware watchpoints that were\n\ | |
9033 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
9034 | hardware.)"), |
9035 | NULL, | |
920d2a44 | 9036 | show_can_use_hw_watchpoints, |
85c07804 | 9037 | &setlist, &showlist); |
c906108c SS |
9038 | |
9039 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 9040 | |
1042e4c0 SS |
9041 | /* Tracepoint manipulation commands. */ |
9042 | ||
9043 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
9044 | Set a tracepoint at specified line or function.\n\ | |
9045 | \n" | |
9046 | BREAK_ARGS_HELP ("trace") "\n\ | |
9047 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
9048 | set_cmd_completer (c, location_completer); | |
9049 | ||
9050 | add_com_alias ("tp", "trace", class_alias, 0); | |
9051 | add_com_alias ("tr", "trace", class_alias, 1); | |
9052 | add_com_alias ("tra", "trace", class_alias, 1); | |
9053 | add_com_alias ("trac", "trace", class_alias, 1); | |
9054 | ||
9055 | add_info ("tracepoints", tracepoints_info, _("\ | |
9056 | Status of tracepoints, or tracepoint number NUMBER.\n\ | |
9057 | Convenience variable \"$tpnum\" contains the number of the\n\ | |
9058 | last tracepoint set.")); | |
9059 | ||
9060 | add_info_alias ("tp", "tracepoints", 1); | |
9061 | ||
9062 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
9063 | Delete specified tracepoints.\n\ | |
9064 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
9065 | No argument means delete all tracepoints."), | |
9066 | &deletelist); | |
9067 | ||
9068 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
9069 | Disable specified tracepoints.\n\ | |
9070 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
9071 | No argument means disable all tracepoints."), | |
9072 | &disablelist); | |
9073 | deprecate_cmd (c, "disable"); | |
9074 | ||
9075 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
9076 | Enable specified tracepoints.\n\ | |
9077 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
9078 | No argument means enable all tracepoints."), | |
9079 | &enablelist); | |
9080 | deprecate_cmd (c, "enable"); | |
9081 | ||
9082 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
9083 | Set the passcount for a tracepoint.\n\ | |
9084 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
9085 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
9086 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
9087 | ||
9088 | c = add_com ("save-tracepoints", class_trace, tracepoint_save_command, _("\ | |
9089 | Save current tracepoint definitions as a script.\n\ | |
9090 | Use the 'source' command in another debug session to restore them.")); | |
9091 | set_cmd_completer (c, filename_completer); | |
9092 | ||
1bedd215 | 9093 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
9094 | Breakpoint specific settings\n\ |
9095 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 9096 | pending breakpoint behavior"), |
fa8d40ab JJ |
9097 | &breakpoint_set_cmdlist, "set breakpoint ", |
9098 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 9099 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
9100 | Breakpoint specific settings\n\ |
9101 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 9102 | pending breakpoint behavior"), |
fa8d40ab JJ |
9103 | &breakpoint_show_cmdlist, "show breakpoint ", |
9104 | 0/*allow-unknown*/, &showlist); | |
9105 | ||
7915a72c AC |
9106 | add_setshow_auto_boolean_cmd ("pending", no_class, |
9107 | &pending_break_support, _("\ | |
9108 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
9109 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
9110 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
9111 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
9112 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 9113 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 9114 | NULL, |
920d2a44 | 9115 | show_pending_break_support, |
6e1d7d6c AC |
9116 | &breakpoint_set_cmdlist, |
9117 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
9118 | |
9119 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
9120 | |
9121 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
9122 | &automatic_hardware_breakpoints, _("\ | |
9123 | Set automatic usage of hardware breakpoints."), _("\ | |
9124 | Show automatic usage of hardware breakpoints."), _("\ | |
9125 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
9126 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
9127 | a warning will be emitted for such breakpoints."), | |
9128 | NULL, | |
9129 | show_automatic_hardware_breakpoints, | |
9130 | &breakpoint_set_cmdlist, | |
9131 | &breakpoint_show_cmdlist); | |
74960c60 | 9132 | |
33e5cbd6 PA |
9133 | add_setshow_enum_cmd ("always-inserted", class_support, |
9134 | always_inserted_enums, &always_inserted_mode, _("\ | |
74960c60 VP |
9135 | Set mode for inserting breakpoints."), _("\ |
9136 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
9137 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
9138 | resumed, and removed when execution stops. When this mode is on,\n\ | |
9139 | breakpoints are inserted immediately and removed only when the user\n\ | |
9140 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
9141 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
9142 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
9143 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
9144 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
74960c60 VP |
9145 | NULL, |
9146 | &show_always_inserted_mode, | |
9147 | &breakpoint_set_cmdlist, | |
9148 | &breakpoint_show_cmdlist); | |
765dc015 VP |
9149 | |
9150 | automatic_hardware_breakpoints = 1; | |
f3b1572e PA |
9151 | |
9152 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
c906108c | 9153 | } |