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 DJ |
4 | 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, |
5 | 2008 Free Software Foundation, Inc. | |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
23 | #include <ctype.h> | |
776592bf | 24 | #include "hashtab.h" |
c906108c SS |
25 | #include "symtab.h" |
26 | #include "frame.h" | |
27 | #include "breakpoint.h" | |
28 | #include "gdbtypes.h" | |
29 | #include "expression.h" | |
30 | #include "gdbcore.h" | |
31 | #include "gdbcmd.h" | |
32 | #include "value.h" | |
33 | #include "command.h" | |
34 | #include "inferior.h" | |
35 | #include "gdbthread.h" | |
36 | #include "target.h" | |
37 | #include "language.h" | |
38 | #include "gdb_string.h" | |
39 | #include "demangle.h" | |
40 | #include "annotate.h" | |
41 | #include "symfile.h" | |
42 | #include "objfiles.h" | |
0378c332 | 43 | #include "source.h" |
c5f0f3d0 | 44 | #include "linespec.h" |
c94fdfd0 | 45 | #include "completer.h" |
5b7f31a4 | 46 | #include "gdb.h" |
8b93c638 | 47 | #include "ui-out.h" |
e1507482 | 48 | #include "cli/cli-script.h" |
0225421b | 49 | #include "gdb_assert.h" |
fe898f56 | 50 | #include "block.h" |
a77053c2 | 51 | #include "solib.h" |
84acb35a JJ |
52 | #include "solist.h" |
53 | #include "observer.h" | |
60250e8b | 54 | #include "exceptions.h" |
765dc015 | 55 | #include "memattr.h" |
f7f9143b | 56 | #include "ada-lang.h" |
d1aa2f50 | 57 | #include "top.h" |
fa4727a6 | 58 | #include "wrapper.h" |
c906108c | 59 | |
034dad6f | 60 | #include "mi/mi-common.h" |
104c1213 | 61 | |
44feb3ce TT |
62 | /* Arguments to pass as context to some catch command handlers. */ |
63 | #define CATCH_PERMANENT ((void *) (uintptr_t) 0) | |
64 | #define CATCH_TEMPORARY ((void *) (uintptr_t) 1) | |
c906108c | 65 | |
44feb3ce | 66 | /* Prototypes for local functions. */ |
c906108c | 67 | |
a14ed312 | 68 | static void enable_delete_command (char *, int); |
c906108c | 69 | |
a14ed312 | 70 | static void enable_delete_breakpoint (struct breakpoint *); |
c906108c | 71 | |
a14ed312 | 72 | static void enable_once_command (char *, int); |
c906108c | 73 | |
a14ed312 | 74 | static void enable_once_breakpoint (struct breakpoint *); |
c906108c | 75 | |
a14ed312 | 76 | static void disable_command (char *, int); |
c906108c | 77 | |
a14ed312 | 78 | static void enable_command (char *, int); |
c906108c | 79 | |
a14ed312 | 80 | static void map_breakpoint_numbers (char *, void (*)(struct breakpoint *)); |
c906108c | 81 | |
a14ed312 | 82 | static void ignore_command (char *, int); |
c906108c | 83 | |
4efb68b1 | 84 | static int breakpoint_re_set_one (void *); |
c906108c | 85 | |
a14ed312 | 86 | static void clear_command (char *, int); |
c906108c | 87 | |
a14ed312 | 88 | static void catch_command (char *, int); |
c906108c | 89 | |
a14ed312 | 90 | static void watch_command (char *, int); |
c906108c | 91 | |
a14ed312 | 92 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 93 | |
98deb0da | 94 | static void break_command_1 (char *, int, int); |
c906108c | 95 | |
a14ed312 | 96 | static void mention (struct breakpoint *); |
c906108c | 97 | |
4d28f7a8 | 98 | struct breakpoint *set_raw_breakpoint (struct symtab_and_line, enum bptype); |
c906108c | 99 | |
9f60f21b | 100 | static void check_duplicates (struct breakpoint *); |
c906108c | 101 | |
76897487 KB |
102 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
103 | ||
88f7da05 KB |
104 | static CORE_ADDR adjust_breakpoint_address (CORE_ADDR bpaddr, |
105 | enum bptype bptype); | |
76897487 | 106 | |
714835d5 | 107 | static void describe_other_breakpoints (CORE_ADDR, struct obj_section *, int); |
c906108c | 108 | |
a14ed312 | 109 | static void breakpoints_info (char *, int); |
c906108c | 110 | |
a14ed312 | 111 | static void breakpoint_1 (int, int); |
c906108c | 112 | |
89f9893c | 113 | static bpstat bpstat_alloc (const struct bp_location *, bpstat); |
c906108c | 114 | |
4efb68b1 | 115 | static int breakpoint_cond_eval (void *); |
c906108c | 116 | |
4efb68b1 | 117 | static void cleanup_executing_breakpoints (void *); |
c906108c | 118 | |
a14ed312 | 119 | static void commands_command (char *, int); |
c906108c | 120 | |
a14ed312 | 121 | static void condition_command (char *, int); |
c906108c | 122 | |
a14ed312 | 123 | static int get_number_trailer (char **, int); |
c906108c | 124 | |
a14ed312 | 125 | void set_breakpoint_count (int); |
c906108c | 126 | |
c5aa993b JM |
127 | typedef enum |
128 | { | |
129 | mark_inserted, | |
130 | mark_uninserted | |
131 | } | |
132 | insertion_state_t; | |
c906108c | 133 | |
0bde7532 | 134 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
c906108c | 135 | |
a14ed312 | 136 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
137 | |
138 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 139 | |
4efb68b1 | 140 | static int watchpoint_check (void *); |
c906108c | 141 | |
a14ed312 | 142 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 143 | |
1900040c MS |
144 | static void create_overlay_event_breakpoint (char *); |
145 | ||
a14ed312 | 146 | static int hw_breakpoint_used_count (void); |
c906108c | 147 | |
a14ed312 | 148 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 149 | |
a14ed312 | 150 | static void hbreak_command (char *, int); |
c906108c | 151 | |
a14ed312 | 152 | static void thbreak_command (char *, int); |
c906108c | 153 | |
a14ed312 | 154 | static void watch_command_1 (char *, int, int); |
c906108c | 155 | |
a14ed312 | 156 | static void rwatch_command (char *, int); |
c906108c | 157 | |
a14ed312 | 158 | static void awatch_command (char *, int); |
c906108c | 159 | |
a14ed312 | 160 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 161 | |
a14ed312 KB |
162 | static void create_fork_vfork_event_catchpoint (int tempflag, |
163 | char *cond_string, | |
164 | enum bptype bp_kind); | |
7a292a7a | 165 | |
a14ed312 | 166 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 167 | |
a14ed312 | 168 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 169 | |
a14ed312 | 170 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 171 | |
a14ed312 | 172 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 173 | |
a14ed312 | 174 | static char *ep_parse_optional_filename (char **arg); |
7a292a7a | 175 | |
d85310f7 MS |
176 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
177 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 178 | |
a14ed312 | 179 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 180 | |
a14ed312 | 181 | static void ep_skip_leading_whitespace (char **s); |
7a292a7a | 182 | |
1aafd4da UW |
183 | static int single_step_breakpoint_inserted_here_p (CORE_ADDR pc); |
184 | ||
fe3f5fa8 VP |
185 | static void free_bp_location (struct bp_location *loc); |
186 | ||
a5606eee VP |
187 | static struct bp_location * |
188 | allocate_bp_location (struct breakpoint *bpt, enum bptype bp_type); | |
189 | ||
b60e7edf | 190 | static void update_global_location_list (int); |
a5606eee | 191 | |
b60e7edf | 192 | static void update_global_location_list_nothrow (int); |
74960c60 VP |
193 | |
194 | static int is_hardware_watchpoint (struct breakpoint *bpt); | |
195 | ||
196 | static void insert_breakpoint_locations (void); | |
a5606eee | 197 | |
2cec12e5 AR |
198 | static const char * |
199 | bpdisp_text (enum bpdisp disp) | |
200 | { | |
201 | /* NOTE: the following values are a part of MI protocol and represent | |
202 | values of 'disp' field returned when inferior stops at a breakpoint. */ | |
203 | static char *bpdisps[] = {"del", "dstp", "dis", "keep"}; | |
204 | return bpdisps[(int) disp]; | |
205 | } | |
c906108c | 206 | |
2cec12e5 | 207 | /* Prototypes for exported functions. */ |
c906108c SS |
208 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
209 | if such is available. */ | |
210 | static int can_use_hw_watchpoints; | |
211 | ||
920d2a44 AC |
212 | static void |
213 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
214 | struct cmd_list_element *c, | |
215 | const char *value) | |
216 | { | |
217 | fprintf_filtered (file, _("\ | |
218 | Debugger's willingness to use watchpoint hardware is %s.\n"), | |
219 | value); | |
220 | } | |
221 | ||
fa8d40ab JJ |
222 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
223 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
224 | for unrecognized breakpoint locations. | |
225 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ | |
226 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
227 | static void |
228 | show_pending_break_support (struct ui_file *file, int from_tty, | |
229 | struct cmd_list_element *c, | |
230 | const char *value) | |
231 | { | |
232 | fprintf_filtered (file, _("\ | |
233 | Debugger's behavior regarding pending breakpoints is %s.\n"), | |
234 | value); | |
235 | } | |
fa8d40ab | 236 | |
765dc015 VP |
237 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
238 | set with "break" but falling in read-only memory. | |
239 | If 0, gdb will warn about such breakpoints, but won't automatically | |
240 | use hardware breakpoints. */ | |
241 | static int automatic_hardware_breakpoints; | |
242 | static void | |
243 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
244 | struct cmd_list_element *c, | |
245 | const char *value) | |
246 | { | |
247 | fprintf_filtered (file, _("\ | |
248 | Automatic usage of hardware breakpoints is %s.\n"), | |
249 | value); | |
250 | } | |
251 | ||
33e5cbd6 PA |
252 | /* If on, gdb will keep breakpoints inserted even as inferior is |
253 | stopped, and immediately insert any new breakpoints. If off, gdb | |
254 | will insert breakpoints into inferior only when resuming it, and | |
255 | will remove breakpoints upon stop. If auto, GDB will behave as ON | |
256 | if in non-stop mode, and as OFF if all-stop mode.*/ | |
257 | ||
258 | static const char always_inserted_auto[] = "auto"; | |
259 | static const char always_inserted_on[] = "on"; | |
260 | static const char always_inserted_off[] = "off"; | |
261 | static const char *always_inserted_enums[] = { | |
262 | always_inserted_auto, | |
263 | always_inserted_off, | |
264 | always_inserted_on, | |
265 | NULL | |
266 | }; | |
267 | static const char *always_inserted_mode = always_inserted_auto; | |
268 | static void | |
74960c60 | 269 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 270 | struct cmd_list_element *c, const char *value) |
74960c60 | 271 | { |
33e5cbd6 PA |
272 | if (always_inserted_mode == always_inserted_auto) |
273 | fprintf_filtered (file, _("\ | |
274 | Always inserted breakpoint mode is %s (currently %s).\n"), | |
275 | value, | |
276 | breakpoints_always_inserted_mode () ? "on" : "off"); | |
277 | else | |
278 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), value); | |
74960c60 VP |
279 | } |
280 | ||
33e5cbd6 PA |
281 | int |
282 | breakpoints_always_inserted_mode (void) | |
283 | { | |
284 | return (always_inserted_mode == always_inserted_on | |
285 | || (always_inserted_mode == always_inserted_auto && non_stop)); | |
286 | } | |
765dc015 | 287 | |
a14ed312 | 288 | void _initialize_breakpoint (void); |
c906108c | 289 | |
c5aa993b | 290 | extern int addressprint; /* Print machine addresses? */ |
c906108c | 291 | |
c906108c SS |
292 | /* Are we executing breakpoint commands? */ |
293 | static int executing_breakpoint_commands; | |
294 | ||
c02f5703 MS |
295 | /* Are overlay event breakpoints enabled? */ |
296 | static int overlay_events_enabled; | |
297 | ||
c906108c SS |
298 | /* Walk the following statement or block through all breakpoints. |
299 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
300 | breakpoint. */ | |
301 | ||
5c44784c | 302 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 303 | |
5c44784c JM |
304 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
305 | for (B = breakpoint_chain; \ | |
306 | B ? (TMP=B->next, 1): 0; \ | |
307 | B = TMP) | |
c906108c | 308 | |
7cc221ef DJ |
309 | /* Similar iterators for the low-level breakpoints. */ |
310 | ||
0d381245 | 311 | #define ALL_BP_LOCATIONS(B) for (B = bp_location_chain; B; B = B->global_next) |
7cc221ef DJ |
312 | |
313 | #define ALL_BP_LOCATIONS_SAFE(B,TMP) \ | |
314 | for (B = bp_location_chain; \ | |
0d381245 | 315 | B ? (TMP=B->global_next, 1): 0; \ |
7cc221ef DJ |
316 | B = TMP) |
317 | ||
7cc221ef | 318 | /* Chains of all breakpoints defined. */ |
c906108c SS |
319 | |
320 | struct breakpoint *breakpoint_chain; | |
321 | ||
7cc221ef DJ |
322 | struct bp_location *bp_location_chain; |
323 | ||
20874c92 VP |
324 | /* The locations that no longer correspond to any breakpoint, |
325 | unlinked from bp_location_chain, but for which a hit | |
326 | may still be reported by a target. */ | |
327 | VEC(bp_location_p) *moribund_locations = NULL; | |
328 | ||
c906108c SS |
329 | /* Number of last breakpoint made. */ |
330 | ||
331 | int breakpoint_count; | |
332 | ||
c906108c SS |
333 | /* This function returns a pointer to the string representation of the |
334 | pathname of the dynamically-linked library that has just been | |
335 | loaded. | |
336 | ||
337 | This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE, | |
338 | or undefined results are guaranteed. | |
339 | ||
340 | This string's contents are only valid immediately after the | |
341 | inferior has stopped in the dynamic linker hook, and becomes | |
342 | invalid as soon as the inferior is continued. Clients should make | |
343 | a copy of this string if they wish to continue the inferior and | |
344 | then access the string. */ | |
345 | ||
346 | #ifndef SOLIB_LOADED_LIBRARY_PATHNAME | |
347 | #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) "" | |
348 | #endif | |
349 | ||
350 | /* This function returns a pointer to the string representation of the | |
351 | pathname of the dynamically-linked library that has just been | |
352 | unloaded. | |
353 | ||
354 | This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is | |
355 | TRUE, or undefined results are guaranteed. | |
356 | ||
357 | This string's contents are only valid immediately after the | |
358 | inferior has stopped in the dynamic linker hook, and becomes | |
359 | invalid as soon as the inferior is continued. Clients should make | |
360 | a copy of this string if they wish to continue the inferior and | |
361 | then access the string. */ | |
362 | ||
363 | #ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME | |
364 | #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) "" | |
365 | #endif | |
366 | ||
367 | /* This function is called by the "catch load" command. It allows the | |
368 | debugger to be notified by the dynamic linker when a specified | |
369 | library file (or any library file, if filename is NULL) is loaded. */ | |
370 | ||
371 | #ifndef SOLIB_CREATE_CATCH_LOAD_HOOK | |
372 | #define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
8a3fe4f8 | 373 | error (_("catch of library loads not yet implemented on this platform")) |
c906108c SS |
374 | #endif |
375 | ||
376 | /* This function is called by the "catch unload" command. It allows | |
377 | the debugger to be notified by the dynamic linker when a specified | |
378 | library file (or any library file, if filename is NULL) is | |
379 | unloaded. */ | |
380 | ||
381 | #ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK | |
1272ad14 | 382 | #define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid, tempflag, filename, cond_string) \ |
8a3fe4f8 | 383 | error (_("catch of library unloads not yet implemented on this platform")) |
c906108c SS |
384 | #endif |
385 | ||
468d015d JJ |
386 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
387 | static int | |
388 | breakpoint_enabled (struct breakpoint *b) | |
389 | { | |
0d381245 | 390 | return (b->enable_state == bp_enabled); |
468d015d JJ |
391 | } |
392 | ||
c906108c SS |
393 | /* Set breakpoint count to NUM. */ |
394 | ||
395 | void | |
fba45db2 | 396 | set_breakpoint_count (int num) |
c906108c SS |
397 | { |
398 | breakpoint_count = num; | |
399 | set_internalvar (lookup_internalvar ("bpnum"), | |
8b9b9e1a | 400 | value_from_longest (builtin_type_int32, (LONGEST) num)); |
c906108c SS |
401 | } |
402 | ||
403 | /* Used in run_command to zero the hit count when a new run starts. */ | |
404 | ||
405 | void | |
fba45db2 | 406 | clear_breakpoint_hit_counts (void) |
c906108c SS |
407 | { |
408 | struct breakpoint *b; | |
409 | ||
410 | ALL_BREAKPOINTS (b) | |
411 | b->hit_count = 0; | |
412 | } | |
413 | ||
414 | /* Default address, symtab and line to put a breakpoint at | |
415 | for "break" command with no arg. | |
416 | if default_breakpoint_valid is zero, the other three are | |
417 | not valid, and "break" with no arg is an error. | |
418 | ||
419 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
420 | ||
421 | int default_breakpoint_valid; | |
422 | CORE_ADDR default_breakpoint_address; | |
423 | struct symtab *default_breakpoint_symtab; | |
424 | int default_breakpoint_line; | |
425 | \f | |
426 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
427 | Advance *PP after the string and any trailing whitespace. | |
428 | ||
429 | Currently the string can either be a number or "$" followed by the name | |
430 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c | 431 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
40c03ae8 EZ |
432 | |
433 | If the string is a NULL pointer, that denotes the last breakpoint. | |
5c44784c JM |
434 | |
435 | TRAILER is a character which can be found after the number; most | |
436 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 437 | static int |
fba45db2 | 438 | get_number_trailer (char **pp, int trailer) |
c906108c | 439 | { |
5c44784c | 440 | int retval = 0; /* default */ |
c906108c SS |
441 | char *p = *pp; |
442 | ||
443 | if (p == NULL) | |
444 | /* Empty line means refer to the last breakpoint. */ | |
445 | return breakpoint_count; | |
446 | else if (*p == '$') | |
447 | { | |
448 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 449 | to pass to lookup_internalvar(). */ |
c906108c SS |
450 | char *varname; |
451 | char *start = ++p; | |
278cd55f | 452 | struct value *val; |
c906108c SS |
453 | |
454 | while (isalnum (*p) || *p == '_') | |
455 | p++; | |
456 | varname = (char *) alloca (p - start + 1); | |
457 | strncpy (varname, start, p - start); | |
458 | varname[p - start] = '\0'; | |
459 | val = value_of_internalvar (lookup_internalvar (varname)); | |
df407dfe | 460 | if (TYPE_CODE (value_type (val)) == TYPE_CODE_INT) |
5c44784c JM |
461 | retval = (int) value_as_long (val); |
462 | else | |
463 | { | |
a3f17187 | 464 | printf_filtered (_("Convenience variable must have integer value.\n")); |
5c44784c JM |
465 | retval = 0; |
466 | } | |
c906108c SS |
467 | } |
468 | else | |
469 | { | |
470 | if (*p == '-') | |
471 | ++p; | |
472 | while (*p >= '0' && *p <= '9') | |
473 | ++p; | |
474 | if (p == *pp) | |
475 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
476 | { |
477 | /* Skip non-numeric token */ | |
478 | while (*p && !isspace((int) *p)) | |
479 | ++p; | |
480 | /* Return zero, which caller must interpret as error. */ | |
481 | retval = 0; | |
482 | } | |
483 | else | |
484 | retval = atoi (*pp); | |
485 | } | |
486 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
487 | { | |
488 | /* Trailing junk: return 0 and let caller print error msg. */ | |
489 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
490 | ++p; | |
491 | retval = 0; | |
c906108c | 492 | } |
c906108c SS |
493 | while (isspace (*p)) |
494 | p++; | |
495 | *pp = p; | |
496 | return retval; | |
497 | } | |
5c44784c | 498 | |
11cf8741 | 499 | |
5c44784c JM |
500 | /* Like get_number_trailer, but don't allow a trailer. */ |
501 | int | |
fba45db2 | 502 | get_number (char **pp) |
5c44784c JM |
503 | { |
504 | return get_number_trailer (pp, '\0'); | |
505 | } | |
506 | ||
507 | /* Parse a number or a range. | |
508 | * A number will be of the form handled by get_number. | |
509 | * A range will be of the form <number1> - <number2>, and | |
510 | * will represent all the integers between number1 and number2, | |
511 | * inclusive. | |
512 | * | |
513 | * While processing a range, this fuction is called iteratively; | |
514 | * At each call it will return the next value in the range. | |
515 | * | |
516 | * At the beginning of parsing a range, the char pointer PP will | |
517 | * be advanced past <number1> and left pointing at the '-' token. | |
518 | * Subsequent calls will not advance the pointer until the range | |
519 | * is completed. The call that completes the range will advance | |
520 | * pointer PP past <number2>. | |
521 | */ | |
522 | ||
523 | int | |
fba45db2 | 524 | get_number_or_range (char **pp) |
5c44784c JM |
525 | { |
526 | static int last_retval, end_value; | |
527 | static char *end_ptr; | |
528 | static int in_range = 0; | |
529 | ||
530 | if (**pp != '-') | |
531 | { | |
532 | /* Default case: pp is pointing either to a solo number, | |
533 | or to the first number of a range. */ | |
534 | last_retval = get_number_trailer (pp, '-'); | |
535 | if (**pp == '-') | |
536 | { | |
537 | char **temp; | |
538 | ||
539 | /* This is the start of a range (<number1> - <number2>). | |
540 | Skip the '-', parse and remember the second number, | |
541 | and also remember the end of the final token. */ | |
542 | ||
543 | temp = &end_ptr; | |
544 | end_ptr = *pp + 1; | |
545 | while (isspace ((int) *end_ptr)) | |
546 | end_ptr++; /* skip white space */ | |
547 | end_value = get_number (temp); | |
548 | if (end_value < last_retval) | |
549 | { | |
8a3fe4f8 | 550 | error (_("inverted range")); |
5c44784c JM |
551 | } |
552 | else if (end_value == last_retval) | |
553 | { | |
554 | /* degenerate range (number1 == number2). Advance the | |
555 | token pointer so that the range will be treated as a | |
556 | single number. */ | |
557 | *pp = end_ptr; | |
558 | } | |
559 | else | |
560 | in_range = 1; | |
561 | } | |
562 | } | |
563 | else if (! in_range) | |
8a3fe4f8 | 564 | error (_("negative value")); |
5c44784c JM |
565 | else |
566 | { | |
567 | /* pp points to the '-' that betokens a range. All | |
568 | number-parsing has already been done. Return the next | |
569 | integer value (one greater than the saved previous value). | |
570 | Do not advance the token pointer 'pp' until the end of range | |
571 | is reached. */ | |
572 | ||
573 | if (++last_retval == end_value) | |
574 | { | |
575 | /* End of range reached; advance token pointer. */ | |
576 | *pp = end_ptr; | |
577 | in_range = 0; | |
578 | } | |
579 | } | |
580 | return last_retval; | |
581 | } | |
582 | ||
583 | ||
c906108c SS |
584 | \f |
585 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
586 | ||
587 | static void | |
fba45db2 | 588 | condition_command (char *arg, int from_tty) |
c906108c | 589 | { |
52f0bd74 | 590 | struct breakpoint *b; |
c906108c | 591 | char *p; |
52f0bd74 | 592 | int bnum; |
c906108c SS |
593 | |
594 | if (arg == 0) | |
e2e0b3e5 | 595 | error_no_arg (_("breakpoint number")); |
c906108c SS |
596 | |
597 | p = arg; | |
598 | bnum = get_number (&p); | |
5c44784c | 599 | if (bnum == 0) |
8a3fe4f8 | 600 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
601 | |
602 | ALL_BREAKPOINTS (b) | |
603 | if (b->number == bnum) | |
2f069f6f JB |
604 | { |
605 | struct bp_location *loc = b->loc; | |
606 | for (; loc; loc = loc->next) | |
607 | { | |
608 | if (loc->cond) | |
609 | { | |
610 | xfree (loc->cond); | |
611 | loc->cond = 0; | |
612 | } | |
613 | } | |
614 | if (b->cond_string != NULL) | |
615 | xfree (b->cond_string); | |
c906108c | 616 | |
2f069f6f JB |
617 | if (*p == 0) |
618 | { | |
619 | b->cond_string = NULL; | |
620 | if (from_tty) | |
621 | printf_filtered (_("Breakpoint %d now unconditional.\n"), bnum); | |
622 | } | |
623 | else | |
624 | { | |
625 | arg = p; | |
626 | /* I don't know if it matters whether this is the string the user | |
627 | typed in or the decompiled expression. */ | |
628 | b->cond_string = savestring (arg, strlen (arg)); | |
629 | b->condition_not_parsed = 0; | |
630 | for (loc = b->loc; loc; loc = loc->next) | |
631 | { | |
632 | arg = p; | |
633 | loc->cond = | |
634 | parse_exp_1 (&arg, block_for_pc (loc->address), 0); | |
635 | if (*arg) | |
636 | error (_("Junk at end of expression")); | |
637 | } | |
638 | } | |
639 | breakpoints_changed (); | |
383f836e | 640 | observer_notify_breakpoint_modified (b->number); |
2f069f6f JB |
641 | return; |
642 | } | |
c906108c | 643 | |
8a3fe4f8 | 644 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
645 | } |
646 | ||
c906108c | 647 | static void |
fba45db2 | 648 | commands_command (char *arg, int from_tty) |
c906108c | 649 | { |
52f0bd74 | 650 | struct breakpoint *b; |
c906108c | 651 | char *p; |
52f0bd74 | 652 | int bnum; |
c906108c SS |
653 | struct command_line *l; |
654 | ||
655 | /* If we allowed this, we would have problems with when to | |
656 | free the storage, if we change the commands currently | |
657 | being read from. */ | |
658 | ||
659 | if (executing_breakpoint_commands) | |
8a3fe4f8 | 660 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); |
c906108c SS |
661 | |
662 | p = arg; | |
663 | bnum = get_number (&p); | |
5c44784c | 664 | |
c906108c | 665 | if (p && *p) |
8a3fe4f8 | 666 | error (_("Unexpected extra arguments following breakpoint number.")); |
c5aa993b | 667 | |
c906108c SS |
668 | ALL_BREAKPOINTS (b) |
669 | if (b->number == bnum) | |
9ebf4acf AC |
670 | { |
671 | char *tmpbuf = xstrprintf ("Type commands for when breakpoint %d is hit, one per line.", | |
672 | bnum); | |
673 | struct cleanup *cleanups = make_cleanup (xfree, tmpbuf); | |
311a4e6b | 674 | l = read_command_lines (tmpbuf, from_tty, 1); |
9ebf4acf AC |
675 | do_cleanups (cleanups); |
676 | free_command_lines (&b->commands); | |
677 | b->commands = l; | |
678 | breakpoints_changed (); | |
383f836e | 679 | observer_notify_breakpoint_modified (b->number); |
9ebf4acf | 680 | return; |
c5aa993b | 681 | } |
8a3fe4f8 | 682 | error (_("No breakpoint number %d."), bnum); |
c906108c | 683 | } |
40c03ae8 EZ |
684 | |
685 | /* Like commands_command, but instead of reading the commands from | |
686 | input stream, takes them from an already parsed command structure. | |
687 | ||
688 | This is used by cli-script.c to DTRT with breakpoint commands | |
689 | that are part of if and while bodies. */ | |
690 | enum command_control_type | |
691 | commands_from_control_command (char *arg, struct command_line *cmd) | |
692 | { | |
693 | struct breakpoint *b; | |
694 | char *p; | |
695 | int bnum; | |
696 | ||
697 | /* If we allowed this, we would have problems with when to | |
698 | free the storage, if we change the commands currently | |
699 | being read from. */ | |
700 | ||
701 | if (executing_breakpoint_commands) | |
702 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); | |
703 | ||
704 | /* An empty string for the breakpoint number means the last | |
705 | breakpoint, but get_number expects a NULL pointer. */ | |
706 | if (arg && !*arg) | |
707 | p = NULL; | |
708 | else | |
709 | p = arg; | |
710 | bnum = get_number (&p); | |
711 | ||
712 | if (p && *p) | |
713 | error (_("Unexpected extra arguments following breakpoint number.")); | |
714 | ||
715 | ALL_BREAKPOINTS (b) | |
716 | if (b->number == bnum) | |
717 | { | |
718 | free_command_lines (&b->commands); | |
719 | if (cmd->body_count != 1) | |
720 | error (_("Invalid \"commands\" block structure.")); | |
721 | /* We need to copy the commands because if/while will free the | |
722 | list after it finishes execution. */ | |
723 | b->commands = copy_command_lines (cmd->body_list[0]); | |
724 | breakpoints_changed (); | |
383f836e | 725 | observer_notify_breakpoint_modified (b->number); |
40c03ae8 | 726 | return simple_control; |
2f069f6f | 727 | } |
40c03ae8 EZ |
728 | error (_("No breakpoint number %d."), bnum); |
729 | } | |
c906108c | 730 | \f |
8defab1a DJ |
731 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
732 | by replacing any memory breakpoints with their shadowed contents. */ | |
c906108c | 733 | |
8defab1a DJ |
734 | void |
735 | breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr, LONGEST len) | |
c906108c | 736 | { |
8defab1a | 737 | struct bp_location *b; |
c906108c SS |
738 | CORE_ADDR bp_addr = 0; |
739 | int bp_size = 0; | |
8defab1a | 740 | int bptoffset = 0; |
c5aa993b | 741 | |
ffce0d52 | 742 | ALL_BP_LOCATIONS (b) |
c5aa993b | 743 | { |
ffce0d52 | 744 | if (b->owner->type == bp_none) |
8a3fe4f8 | 745 | warning (_("reading through apparently deleted breakpoint #%d?"), |
ffce0d52 DJ |
746 | b->owner->number); |
747 | ||
748 | if (b->loc_type != bp_loc_software_breakpoint) | |
c5aa993b | 749 | continue; |
ffce0d52 | 750 | if (!b->inserted) |
c5aa993b JM |
751 | continue; |
752 | /* Addresses and length of the part of the breakpoint that | |
753 | we need to copy. */ | |
8181d85f DJ |
754 | bp_addr = b->target_info.placed_address; |
755 | bp_size = b->target_info.shadow_len; | |
c5aa993b | 756 | if (bp_size == 0) |
8181d85f | 757 | /* bp isn't valid, or doesn't shadow memory. */ |
c5aa993b | 758 | continue; |
8defab1a | 759 | |
c5aa993b JM |
760 | if (bp_addr + bp_size <= memaddr) |
761 | /* The breakpoint is entirely before the chunk of memory we | |
762 | are reading. */ | |
763 | continue; | |
8defab1a | 764 | |
c5aa993b JM |
765 | if (bp_addr >= memaddr + len) |
766 | /* The breakpoint is entirely after the chunk of memory we are | |
767 | reading. */ | |
768 | continue; | |
c5aa993b | 769 | |
8defab1a DJ |
770 | /* Offset within shadow_contents. */ |
771 | if (bp_addr < memaddr) | |
772 | { | |
773 | /* Only copy the second part of the breakpoint. */ | |
774 | bp_size -= memaddr - bp_addr; | |
775 | bptoffset = memaddr - bp_addr; | |
776 | bp_addr = memaddr; | |
777 | } | |
c5aa993b | 778 | |
8defab1a DJ |
779 | if (bp_addr + bp_size > memaddr + len) |
780 | { | |
781 | /* Only copy the first part of the breakpoint. */ | |
782 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
783 | } | |
c5aa993b | 784 | |
8defab1a DJ |
785 | memcpy (buf + bp_addr - memaddr, |
786 | b->target_info.shadow_contents + bptoffset, bp_size); | |
c5aa993b | 787 | } |
c906108c | 788 | } |
c906108c | 789 | \f |
c5aa993b | 790 | |
687595f9 | 791 | /* A wrapper function for inserting catchpoints. */ |
9cbc821d | 792 | static void |
687595f9 DJ |
793 | insert_catchpoint (struct ui_out *uo, void *args) |
794 | { | |
795 | struct breakpoint *b = (struct breakpoint *) args; | |
796 | int val = -1; | |
797 | ||
798 | switch (b->type) | |
799 | { | |
800 | case bp_catch_fork: | |
fa113d1a | 801 | target_insert_fork_catchpoint (PIDGET (inferior_ptid)); |
687595f9 DJ |
802 | break; |
803 | case bp_catch_vfork: | |
fa113d1a | 804 | target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); |
687595f9 DJ |
805 | break; |
806 | case bp_catch_exec: | |
fa113d1a | 807 | target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
687595f9 DJ |
808 | break; |
809 | default: | |
e2e0b3e5 | 810 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
687595f9 DJ |
811 | break; |
812 | } | |
687595f9 DJ |
813 | } |
814 | ||
a5606eee VP |
815 | static int |
816 | is_hardware_watchpoint (struct breakpoint *bpt) | |
817 | { | |
818 | return (bpt->type == bp_hardware_watchpoint | |
819 | || bpt->type == bp_read_watchpoint | |
820 | || bpt->type == bp_access_watchpoint); | |
821 | } | |
7270d8f2 | 822 | |
fa4727a6 DJ |
823 | /* Find the current value of a watchpoint on EXP. Return the value in |
824 | *VALP and *RESULTP and the chain of intermediate and final values | |
825 | in *VAL_CHAIN. RESULTP and VAL_CHAIN may be NULL if the caller does | |
826 | not need them. | |
827 | ||
828 | If an error occurs while evaluating the expression, *RESULTP will | |
829 | be set to NULL. *RESULTP may be a lazy value, if the result could | |
830 | not be read from memory. It is used to determine whether a value | |
831 | is user-specified (we should watch the whole value) or intermediate | |
832 | (we should watch only the bit used to locate the final value). | |
833 | ||
834 | If the final value, or any intermediate value, could not be read | |
835 | from memory, *VALP will be set to NULL. *VAL_CHAIN will still be | |
836 | set to any referenced values. *VALP will never be a lazy value. | |
837 | This is the value which we store in struct breakpoint. | |
838 | ||
839 | If VAL_CHAIN is non-NULL, *VAL_CHAIN will be released from the | |
840 | value chain. The caller must free the values individually. If | |
841 | VAL_CHAIN is NULL, all generated values will be left on the value | |
842 | chain. */ | |
843 | ||
844 | static void | |
845 | fetch_watchpoint_value (struct expression *exp, struct value **valp, | |
846 | struct value **resultp, struct value **val_chain) | |
847 | { | |
848 | struct value *mark, *new_mark, *result; | |
849 | ||
850 | *valp = NULL; | |
851 | if (resultp) | |
852 | *resultp = NULL; | |
853 | if (val_chain) | |
854 | *val_chain = NULL; | |
855 | ||
856 | /* Evaluate the expression. */ | |
857 | mark = value_mark (); | |
858 | result = NULL; | |
859 | gdb_evaluate_expression (exp, &result); | |
860 | new_mark = value_mark (); | |
861 | if (mark == new_mark) | |
862 | return; | |
863 | if (resultp) | |
864 | *resultp = result; | |
865 | ||
866 | /* Make sure it's not lazy, so that after the target stops again we | |
867 | have a non-lazy previous value to compare with. */ | |
868 | if (result != NULL | |
869 | && (!value_lazy (result) || gdb_value_fetch_lazy (result))) | |
870 | *valp = result; | |
871 | ||
872 | if (val_chain) | |
873 | { | |
874 | /* Return the chain of intermediate values. We use this to | |
875 | decide which addresses to watch. */ | |
876 | *val_chain = new_mark; | |
877 | value_release_to_mark (mark); | |
878 | } | |
879 | } | |
880 | ||
881 | /* Assuming that B is a hardware watchpoint: | |
a5606eee VP |
882 | - Reparse watchpoint expression, is REPARSE is non-zero |
883 | - Evaluate expression and store the result in B->val | |
884 | - Update the list of values that must be watched in B->loc. | |
885 | ||
886 | If the watchpoint is disabled, do nothing. If this is | |
887 | local watchpoint that is out of scope, delete it. */ | |
b40ce68a | 888 | static void |
a5606eee | 889 | update_watchpoint (struct breakpoint *b, int reparse) |
7270d8f2 | 890 | { |
a5606eee | 891 | int within_current_scope; |
a5606eee VP |
892 | struct frame_id saved_frame_id; |
893 | struct bp_location *loc; | |
894 | bpstat bs; | |
895 | ||
74960c60 VP |
896 | /* We don't free locations. They are stored in |
897 | bp_location_chain and update_global_locations will | |
898 | eventually delete them and remove breakpoints if | |
899 | needed. */ | |
a5606eee VP |
900 | b->loc = NULL; |
901 | ||
902 | if (b->disposition == disp_del_at_next_stop) | |
903 | return; | |
904 | ||
905 | /* Save the current frame's ID so we can restore it after | |
906 | evaluating the watchpoint expression on its own frame. */ | |
907 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
908 | took a frame parameter, so that we didn't have to change the | |
909 | selected frame. */ | |
910 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
911 | ||
912 | /* Determine if the watchpoint is within scope. */ | |
913 | if (b->exp_valid_block == NULL) | |
914 | within_current_scope = 1; | |
915 | else | |
916 | { | |
917 | struct frame_info *fi; | |
918 | fi = frame_find_by_id (b->watchpoint_frame); | |
919 | within_current_scope = (fi != NULL); | |
920 | if (within_current_scope) | |
921 | select_frame (fi); | |
922 | } | |
923 | ||
924 | if (within_current_scope && reparse) | |
925 | { | |
926 | char *s; | |
927 | if (b->exp) | |
928 | { | |
929 | xfree (b->exp); | |
930 | b->exp = NULL; | |
931 | } | |
932 | s = b->exp_string; | |
933 | b->exp = parse_exp_1 (&s, b->exp_valid_block, 0); | |
934 | /* If the meaning of expression itself changed, the old value is | |
935 | no longer relevant. We don't want to report a watchpoint hit | |
936 | to the user when the old value and the new value may actually | |
937 | be completely different objects. */ | |
938 | value_free (b->val); | |
fa4727a6 DJ |
939 | b->val = NULL; |
940 | b->val_valid = 0; | |
a5606eee | 941 | } |
a5606eee VP |
942 | |
943 | /* If we failed to parse the expression, for example because | |
944 | it refers to a global variable in a not-yet-loaded shared library, | |
945 | don't try to insert watchpoint. We don't automatically delete | |
946 | such watchpoint, though, since failure to parse expression | |
947 | is different from out-of-scope watchpoint. */ | |
948 | if (within_current_scope && b->exp) | |
949 | { | |
fa4727a6 | 950 | struct value *val_chain, *v, *result, *next; |
a5606eee | 951 | |
fa4727a6 | 952 | fetch_watchpoint_value (b->exp, &v, &result, &val_chain); |
a5606eee | 953 | |
a5606eee VP |
954 | /* Avoid setting b->val if it's already set. The meaning of |
955 | b->val is 'the last value' user saw, and we should update | |
956 | it only if we reported that last value to user. As it | |
957 | happens, the code that reports it updates b->val directly. */ | |
fa4727a6 DJ |
958 | if (!b->val_valid) |
959 | { | |
960 | b->val = v; | |
961 | b->val_valid = 1; | |
962 | } | |
a5606eee VP |
963 | |
964 | /* Look at each value on the value chain. */ | |
fa4727a6 | 965 | for (v = val_chain; v; v = next) |
a5606eee VP |
966 | { |
967 | /* If it's a memory location, and GDB actually needed | |
968 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
969 | must watch it. If the first value returned is |
970 | still lazy, that means an error occurred reading it; | |
971 | watch it anyway in case it becomes readable. */ | |
a5606eee | 972 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 973 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
974 | { |
975 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 976 | |
a5606eee VP |
977 | /* We only watch structs and arrays if user asked |
978 | for it explicitly, never if they just happen to | |
979 | appear in the middle of some value chain. */ | |
fa4727a6 | 980 | if (v == result |
a5606eee VP |
981 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
982 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
983 | { | |
984 | CORE_ADDR addr; | |
985 | int len, type; | |
986 | struct bp_location *loc, **tmp; | |
987 | ||
988 | addr = VALUE_ADDRESS (v) + value_offset (v); | |
989 | len = TYPE_LENGTH (value_type (v)); | |
990 | type = hw_write; | |
991 | if (b->type == bp_read_watchpoint) | |
992 | type = hw_read; | |
993 | else if (b->type == bp_access_watchpoint) | |
994 | type = hw_access; | |
995 | ||
996 | loc = allocate_bp_location (b, bp_hardware_watchpoint); | |
997 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
998 | ; | |
999 | *tmp = loc; | |
1000 | loc->address = addr; | |
1001 | loc->length = len; | |
1002 | loc->watchpoint_type = type; | |
1003 | } | |
1004 | } | |
1005 | ||
1006 | next = value_next (v); | |
1007 | if (v != b->val) | |
1008 | value_free (v); | |
1009 | } | |
1010 | ||
2ec93238 MK |
1011 | /* We just regenerated the list of breakpoint locations. |
1012 | The new location does not have its condition field set to anything | |
1013 | and therefore, we must always reparse the cond_string, independently | |
1014 | of the value of the reparse flag. */ | |
1015 | if (b->cond_string != NULL) | |
a5606eee VP |
1016 | { |
1017 | char *s = b->cond_string; | |
a5606eee VP |
1018 | b->loc->cond = parse_exp_1 (&s, b->exp_valid_block, 0); |
1019 | } | |
1020 | } | |
1021 | else if (!within_current_scope) | |
7270d8f2 | 1022 | { |
a5606eee VP |
1023 | printf_filtered (_("\ |
1024 | Hardware watchpoint %d deleted because the program has left the block \n\ | |
1025 | in which its expression is valid.\n"), | |
1026 | b->number); | |
1027 | if (b->related_breakpoint) | |
1028 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1029 | b->disposition = disp_del_at_next_stop; | |
7270d8f2 | 1030 | } |
a5606eee VP |
1031 | |
1032 | /* Restore the selected frame. */ | |
1033 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1034 | } |
1035 | ||
a5606eee | 1036 | |
74960c60 VP |
1037 | /* Returns 1 iff breakpoint location should be |
1038 | inserted in the inferior. */ | |
1039 | static int | |
1040 | should_be_inserted (struct bp_location *bpt) | |
1041 | { | |
1042 | if (!breakpoint_enabled (bpt->owner)) | |
1043 | return 0; | |
1044 | ||
1045 | if (bpt->owner->disposition == disp_del_at_next_stop) | |
1046 | return 0; | |
1047 | ||
1048 | if (!bpt->enabled || bpt->shlib_disabled || bpt->duplicate) | |
1049 | return 0; | |
1050 | ||
1051 | return 1; | |
1052 | } | |
1053 | ||
879bfdc2 DJ |
1054 | /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint. |
1055 | Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS, | |
1056 | PROCESS_WARNING, and HW_BREAKPOINT_ERROR are used to report problems. | |
1057 | ||
1058 | NOTE drow/2003-09-09: This routine could be broken down to an object-style | |
1059 | method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 1060 | static int |
879bfdc2 | 1061 | insert_bp_location (struct bp_location *bpt, |
26bb91f3 DJ |
1062 | struct ui_file *tmp_error_stream, |
1063 | int *disabled_breaks, int *process_warning, | |
1064 | int *hw_breakpoint_error) | |
879bfdc2 DJ |
1065 | { |
1066 | int val = 0; | |
1067 | ||
74960c60 | 1068 | if (!should_be_inserted (bpt) || bpt->inserted) |
879bfdc2 DJ |
1069 | return 0; |
1070 | ||
8181d85f DJ |
1071 | /* Initialize the target-specific information. */ |
1072 | memset (&bpt->target_info, 0, sizeof (bpt->target_info)); | |
1073 | bpt->target_info.placed_address = bpt->address; | |
1074 | ||
879bfdc2 DJ |
1075 | if (bpt->loc_type == bp_loc_software_breakpoint |
1076 | || bpt->loc_type == bp_loc_hardware_breakpoint) | |
1077 | { | |
765dc015 VP |
1078 | if (bpt->owner->type != bp_hardware_breakpoint) |
1079 | { | |
1080 | /* If the explicitly specified breakpoint type | |
1081 | is not hardware breakpoint, check the memory map to see | |
1082 | if the breakpoint address is in read only memory or not. | |
1083 | Two important cases are: | |
1084 | - location type is not hardware breakpoint, memory | |
1085 | is readonly. We change the type of the location to | |
1086 | hardware breakpoint. | |
1087 | - location type is hardware breakpoint, memory is read-write. | |
1088 | This means we've previously made the location hardware one, but | |
1089 | then the memory map changed, so we undo. | |
1090 | ||
1091 | When breakpoints are removed, remove_breakpoints will | |
1092 | use location types we've just set here, the only possible | |
1093 | problem is that memory map has changed during running program, | |
1094 | but it's not going to work anyway with current gdb. */ | |
1095 | struct mem_region *mr | |
1096 | = lookup_mem_region (bpt->target_info.placed_address); | |
1097 | ||
1098 | if (mr) | |
1099 | { | |
1100 | if (automatic_hardware_breakpoints) | |
1101 | { | |
1102 | int changed = 0; | |
1103 | enum bp_loc_type new_type; | |
1104 | ||
1105 | if (mr->attrib.mode != MEM_RW) | |
1106 | new_type = bp_loc_hardware_breakpoint; | |
1107 | else | |
1108 | new_type = bp_loc_software_breakpoint; | |
1109 | ||
1110 | if (new_type != bpt->loc_type) | |
1111 | { | |
1112 | static int said = 0; | |
1113 | bpt->loc_type = new_type; | |
1114 | if (!said) | |
1115 | { | |
1116 | fprintf_filtered (gdb_stdout, _("\ | |
0767c96d | 1117 | Note: automatically using hardware breakpoints for read-only addresses.\n")); |
765dc015 VP |
1118 | said = 1; |
1119 | } | |
1120 | } | |
1121 | } | |
1122 | else if (bpt->loc_type == bp_loc_software_breakpoint | |
1123 | && mr->attrib.mode != MEM_RW) | |
1124 | warning (_("cannot set software breakpoint at readonly address %s"), | |
1125 | paddr (bpt->address)); | |
1126 | } | |
1127 | } | |
1128 | ||
879bfdc2 DJ |
1129 | /* First check to see if we have to handle an overlay. */ |
1130 | if (overlay_debugging == ovly_off | |
1131 | || bpt->section == NULL | |
1132 | || !(section_is_overlay (bpt->section))) | |
1133 | { | |
1134 | /* No overlay handling: just set the breakpoint. */ | |
1135 | ||
1136 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8181d85f | 1137 | val = target_insert_hw_breakpoint (&bpt->target_info); |
879bfdc2 | 1138 | else |
8181d85f | 1139 | val = target_insert_breakpoint (&bpt->target_info); |
879bfdc2 DJ |
1140 | } |
1141 | else | |
1142 | { | |
1143 | /* This breakpoint is in an overlay section. | |
1144 | Shall we set a breakpoint at the LMA? */ | |
1145 | if (!overlay_events_enabled) | |
1146 | { | |
1147 | /* Yes -- overlay event support is not active, | |
1148 | so we must try to set a breakpoint at the LMA. | |
1149 | This will not work for a hardware breakpoint. */ | |
1150 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8a3fe4f8 | 1151 | warning (_("hardware breakpoint %d not supported in overlay!"), |
879bfdc2 DJ |
1152 | bpt->owner->number); |
1153 | else | |
1154 | { | |
1155 | CORE_ADDR addr = overlay_unmapped_address (bpt->address, | |
1156 | bpt->section); | |
1157 | /* Set a software (trap) breakpoint at the LMA. */ | |
8181d85f DJ |
1158 | bpt->overlay_target_info = bpt->target_info; |
1159 | bpt->overlay_target_info.placed_address = addr; | |
1160 | val = target_insert_breakpoint (&bpt->overlay_target_info); | |
879bfdc2 DJ |
1161 | if (val != 0) |
1162 | fprintf_unfiltered (tmp_error_stream, | |
1163 | "Overlay breakpoint %d failed: in ROM?", | |
1164 | bpt->owner->number); | |
1165 | } | |
1166 | } | |
1167 | /* Shall we set a breakpoint at the VMA? */ | |
1168 | if (section_is_mapped (bpt->section)) | |
1169 | { | |
1170 | /* Yes. This overlay section is mapped into memory. */ | |
1171 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8181d85f | 1172 | val = target_insert_hw_breakpoint (&bpt->target_info); |
879bfdc2 | 1173 | else |
8181d85f | 1174 | val = target_insert_breakpoint (&bpt->target_info); |
879bfdc2 DJ |
1175 | } |
1176 | else | |
1177 | { | |
1178 | /* No. This breakpoint will not be inserted. | |
1179 | No error, but do not mark the bp as 'inserted'. */ | |
1180 | return 0; | |
1181 | } | |
1182 | } | |
1183 | ||
1184 | if (val) | |
1185 | { | |
1186 | /* Can't set the breakpoint. */ | |
9bbf65bb | 1187 | if (solib_address (bpt->address)) |
879bfdc2 DJ |
1188 | { |
1189 | /* See also: disable_breakpoints_in_shlibs. */ | |
1190 | val = 0; | |
0d381245 | 1191 | bpt->shlib_disabled = 1; |
879bfdc2 DJ |
1192 | if (!*disabled_breaks) |
1193 | { | |
1194 | fprintf_unfiltered (tmp_error_stream, | |
1195 | "Cannot insert breakpoint %d.\n", | |
1196 | bpt->owner->number); | |
1197 | fprintf_unfiltered (tmp_error_stream, | |
1198 | "Temporarily disabling shared library breakpoints:\n"); | |
1199 | } | |
1200 | *disabled_breaks = 1; | |
1201 | fprintf_unfiltered (tmp_error_stream, | |
1202 | "breakpoint #%d\n", bpt->owner->number); | |
1203 | } | |
1204 | else | |
879bfdc2 DJ |
1205 | { |
1206 | #ifdef ONE_PROCESS_WRITETEXT | |
1207 | *process_warning = 1; | |
1208 | #endif | |
1209 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
1210 | { | |
1211 | *hw_breakpoint_error = 1; | |
1212 | fprintf_unfiltered (tmp_error_stream, | |
1213 | "Cannot insert hardware breakpoint %d.\n", | |
1214 | bpt->owner->number); | |
1215 | } | |
1216 | else | |
1217 | { | |
1218 | fprintf_unfiltered (tmp_error_stream, | |
1219 | "Cannot insert breakpoint %d.\n", | |
1220 | bpt->owner->number); | |
1221 | fprintf_filtered (tmp_error_stream, | |
1222 | "Error accessing memory address "); | |
ed49a04f | 1223 | fputs_filtered (paddress (bpt->address), tmp_error_stream); |
879bfdc2 DJ |
1224 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1225 | safe_strerror (val)); | |
1226 | } | |
1227 | ||
1228 | } | |
1229 | } | |
1230 | else | |
1231 | bpt->inserted = 1; | |
1232 | ||
1233 | return val; | |
1234 | } | |
1235 | ||
1236 | else if (bpt->loc_type == bp_loc_hardware_watchpoint | |
1237 | /* NOTE drow/2003-09-08: This state only exists for removing | |
1238 | watchpoints. It's not clear that it's necessary... */ | |
1239 | && bpt->owner->disposition != disp_del_at_next_stop) | |
1240 | { | |
a5606eee VP |
1241 | val = target_insert_watchpoint (bpt->address, |
1242 | bpt->length, | |
1243 | bpt->watchpoint_type); | |
1244 | bpt->inserted = (val != -1); | |
879bfdc2 DJ |
1245 | } |
1246 | ||
879bfdc2 DJ |
1247 | else if (bpt->owner->type == bp_catch_fork |
1248 | || bpt->owner->type == bp_catch_vfork | |
1249 | || bpt->owner->type == bp_catch_exec) | |
1250 | { | |
71fff37b AC |
1251 | struct gdb_exception e = catch_exception (uiout, insert_catchpoint, |
1252 | bpt->owner, RETURN_MASK_ERROR); | |
9cbc821d AC |
1253 | exception_fprintf (gdb_stderr, e, "warning: inserting catchpoint %d: ", |
1254 | bpt->owner->number); | |
1255 | if (e.reason < 0) | |
879bfdc2 DJ |
1256 | bpt->owner->enable_state = bp_disabled; |
1257 | else | |
1258 | bpt->inserted = 1; | |
1640b821 DJ |
1259 | |
1260 | /* We've already printed an error message if there was a problem | |
1261 | inserting this catchpoint, and we've disabled the catchpoint, | |
1262 | so just return success. */ | |
1263 | return 0; | |
879bfdc2 DJ |
1264 | } |
1265 | ||
1266 | return 0; | |
1267 | } | |
1268 | ||
74960c60 VP |
1269 | /* Make sure all breakpoints are inserted in inferior. |
1270 | Throws exception on any error. | |
1271 | A breakpoint that is already inserted won't be inserted | |
1272 | again, so calling this function twice is safe. */ | |
1273 | void | |
1274 | insert_breakpoints (void) | |
1275 | { | |
1276 | struct breakpoint *bpt; | |
1277 | ||
1278 | ALL_BREAKPOINTS (bpt) | |
1279 | if (is_hardware_watchpoint (bpt)) | |
1280 | update_watchpoint (bpt, 0 /* don't reparse. */); | |
1281 | ||
b60e7edf | 1282 | update_global_location_list (1); |
74960c60 | 1283 | |
a12654ce | 1284 | if (!breakpoints_always_inserted_mode () && target_has_execution) |
74960c60 VP |
1285 | /* update_global_location_list does not insert breakpoints |
1286 | when always_inserted_mode is not enabled. Explicitly | |
1287 | insert them now. */ | |
1288 | insert_breakpoint_locations (); | |
1289 | } | |
1290 | ||
c906108c SS |
1291 | /* insert_breakpoints is used when starting or continuing the program. |
1292 | remove_breakpoints is used when the program stops. | |
1293 | Both return zero if successful, | |
1294 | or an `errno' value if could not write the inferior. */ | |
1295 | ||
74960c60 VP |
1296 | static void |
1297 | insert_breakpoint_locations (void) | |
c906108c | 1298 | { |
a5606eee | 1299 | struct breakpoint *bpt; |
879bfdc2 | 1300 | struct bp_location *b, *temp; |
e236ba44 | 1301 | int error = 0; |
c906108c SS |
1302 | int val = 0; |
1303 | int disabled_breaks = 0; | |
81d0cc19 GS |
1304 | int hw_breakpoint_error = 0; |
1305 | int process_warning = 0; | |
c906108c | 1306 | |
81d0cc19 GS |
1307 | struct ui_file *tmp_error_stream = mem_fileopen (); |
1308 | make_cleanup_ui_file_delete (tmp_error_stream); | |
74960c60 | 1309 | |
81d0cc19 GS |
1310 | /* Explicitly mark the warning -- this will only be printed if |
1311 | there was an error. */ | |
1312 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
a5606eee | 1313 | |
879bfdc2 DJ |
1314 | ALL_BP_LOCATIONS_SAFE (b, temp) |
1315 | { | |
74960c60 | 1316 | if (!should_be_inserted (b) || b->inserted) |
879bfdc2 DJ |
1317 | continue; |
1318 | ||
f365de73 AS |
1319 | /* There is no point inserting thread-specific breakpoints if the |
1320 | thread no longer exists. */ | |
1321 | if (b->owner->thread != -1 | |
1322 | && !valid_thread_id (b->owner->thread)) | |
1323 | continue; | |
1324 | ||
879bfdc2 DJ |
1325 | val = insert_bp_location (b, tmp_error_stream, |
1326 | &disabled_breaks, &process_warning, | |
1327 | &hw_breakpoint_error); | |
1328 | if (val) | |
e236ba44 | 1329 | error = val; |
879bfdc2 | 1330 | } |
c906108c | 1331 | |
a5606eee VP |
1332 | /* If we failed to insert all locations of a watchpoint, |
1333 | remove them, as half-inserted watchpoint is of limited use. */ | |
1334 | ALL_BREAKPOINTS (bpt) | |
1335 | { | |
1336 | int some_failed = 0; | |
1337 | struct bp_location *loc; | |
1338 | ||
1339 | if (!is_hardware_watchpoint (bpt)) | |
1340 | continue; | |
1341 | ||
d6b74ac4 | 1342 | if (!breakpoint_enabled (bpt)) |
a5606eee | 1343 | continue; |
74960c60 VP |
1344 | |
1345 | if (bpt->disposition == disp_del_at_next_stop) | |
1346 | continue; | |
a5606eee VP |
1347 | |
1348 | for (loc = bpt->loc; loc; loc = loc->next) | |
1349 | if (!loc->inserted) | |
1350 | { | |
1351 | some_failed = 1; | |
1352 | break; | |
1353 | } | |
1354 | if (some_failed) | |
1355 | { | |
1356 | for (loc = bpt->loc; loc; loc = loc->next) | |
1357 | if (loc->inserted) | |
1358 | remove_breakpoint (loc, mark_uninserted); | |
1359 | ||
1360 | hw_breakpoint_error = 1; | |
1361 | fprintf_unfiltered (tmp_error_stream, | |
1362 | "Could not insert hardware watchpoint %d.\n", | |
1363 | bpt->number); | |
1364 | error = -1; | |
1365 | } | |
1366 | } | |
1367 | ||
e236ba44 | 1368 | if (error) |
81d0cc19 GS |
1369 | { |
1370 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1371 | message about possibly exhausted resources. */ | |
879bfdc2 | 1372 | if (hw_breakpoint_error) |
81d0cc19 | 1373 | { |
c6510018 MS |
1374 | fprintf_unfiltered (tmp_error_stream, |
1375 | "Could not insert hardware breakpoints:\n\ | |
1376 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1377 | } |
c6510018 | 1378 | #ifdef ONE_PROCESS_WRITETEXT |
81d0cc19 | 1379 | if (process_warning) |
c6510018 MS |
1380 | fprintf_unfiltered (tmp_error_stream, |
1381 | "The same program may be running in another process."); | |
1382 | #endif | |
81d0cc19 GS |
1383 | target_terminal_ours_for_output (); |
1384 | error_stream (tmp_error_stream); | |
1385 | } | |
c906108c SS |
1386 | } |
1387 | ||
c906108c | 1388 | int |
fba45db2 | 1389 | remove_breakpoints (void) |
c906108c | 1390 | { |
0bde7532 | 1391 | struct bp_location *b; |
c906108c SS |
1392 | int val; |
1393 | ||
0bde7532 | 1394 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1395 | { |
0bde7532 | 1396 | if (b->inserted) |
c5aa993b JM |
1397 | { |
1398 | val = remove_breakpoint (b, mark_uninserted); | |
1399 | if (val != 0) | |
1400 | return val; | |
1401 | } | |
1402 | } | |
c906108c SS |
1403 | return 0; |
1404 | } | |
1405 | ||
692590c1 | 1406 | int |
80ce1ecb | 1407 | remove_hw_watchpoints (void) |
692590c1 | 1408 | { |
0bde7532 | 1409 | struct bp_location *b; |
692590c1 MS |
1410 | int val; |
1411 | ||
0bde7532 | 1412 | ALL_BP_LOCATIONS (b) |
692590c1 | 1413 | { |
0bde7532 | 1414 | if (b->inserted && b->loc_type == bp_loc_hardware_watchpoint) |
692590c1 MS |
1415 | { |
1416 | val = remove_breakpoint (b, mark_uninserted); | |
1417 | if (val != 0) | |
1418 | return val; | |
1419 | } | |
1420 | } | |
1421 | return 0; | |
1422 | } | |
1423 | ||
c906108c | 1424 | int |
fba45db2 | 1425 | reattach_breakpoints (int pid) |
c906108c | 1426 | { |
0bde7532 | 1427 | struct bp_location *b; |
c906108c | 1428 | int val; |
ce696e05 | 1429 | struct cleanup *old_chain = save_inferior_ptid (); |
a4954f26 DJ |
1430 | struct ui_file *tmp_error_stream = mem_fileopen (); |
1431 | int dummy1 = 0, dummy2 = 0, dummy3 = 0; | |
1432 | ||
1433 | make_cleanup_ui_file_delete (tmp_error_stream); | |
c906108c | 1434 | |
ce696e05 | 1435 | inferior_ptid = pid_to_ptid (pid); |
0bde7532 | 1436 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1437 | { |
0bde7532 | 1438 | if (b->inserted) |
c5aa993b | 1439 | { |
a4954f26 DJ |
1440 | b->inserted = 0; |
1441 | val = insert_bp_location (b, tmp_error_stream, | |
1442 | &dummy1, &dummy2, &dummy3); | |
c5aa993b JM |
1443 | if (val != 0) |
1444 | { | |
ce696e05 | 1445 | do_cleanups (old_chain); |
c5aa993b JM |
1446 | return val; |
1447 | } | |
1448 | } | |
1449 | } | |
ce696e05 | 1450 | do_cleanups (old_chain); |
c906108c SS |
1451 | return 0; |
1452 | } | |
1453 | ||
1454 | void | |
fba45db2 | 1455 | update_breakpoints_after_exec (void) |
c906108c | 1456 | { |
c5aa993b JM |
1457 | struct breakpoint *b; |
1458 | struct breakpoint *temp; | |
25b22b0a | 1459 | struct bp_location *bploc; |
c906108c | 1460 | |
25b22b0a PA |
1461 | /* We're about to delete breakpoints from GDB's lists. If the |
1462 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
1463 | writing the breakpoints' "shadow contents" back into memory. The | |
1464 | "shadow contents" are NOT valid after an exec, so GDB should not | |
1465 | do that. Instead, the target is responsible from marking | |
1466 | breakpoints out as soon as it detects an exec. We don't do that | |
1467 | here instead, because there may be other attempts to delete | |
1468 | breakpoints after detecting an exec and before reaching here. */ | |
1469 | ALL_BP_LOCATIONS (bploc) | |
1470 | gdb_assert (!bploc->inserted); | |
c906108c SS |
1471 | |
1472 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1473 | { |
1474 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
1475 | if (b->type == bp_shlib_event) | |
1476 | { | |
1477 | delete_breakpoint (b); | |
1478 | continue; | |
1479 | } | |
c906108c | 1480 | |
1900040c MS |
1481 | /* Thread event breakpoints must be set anew after an exec(), |
1482 | as must overlay event breakpoints. */ | |
1483 | if (b->type == bp_thread_event || b->type == bp_overlay_event) | |
c4093a6a JM |
1484 | { |
1485 | delete_breakpoint (b); | |
1486 | continue; | |
1487 | } | |
1488 | ||
c5aa993b JM |
1489 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1490 | if (b->type == bp_step_resume) | |
1491 | { | |
1492 | delete_breakpoint (b); | |
1493 | continue; | |
1494 | } | |
1495 | ||
611c83ae PA |
1496 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
1497 | after an exec. */ | |
1498 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume) | |
1499 | { | |
1500 | delete_breakpoint (b); | |
1501 | continue; | |
1502 | } | |
1503 | ||
c5aa993b JM |
1504 | /* Don't delete an exec catchpoint, because else the inferior |
1505 | won't stop when it ought! | |
1506 | ||
1507 | Similarly, we probably ought to keep vfork catchpoints, 'cause | |
53a5351d JM |
1508 | on this target, we may not be able to stop when the vfork is |
1509 | seen, but only when the subsequent exec is seen. (And because | |
1510 | deleting fork catchpoints here but not vfork catchpoints will | |
e14a792b | 1511 | seem mysterious to users, keep those too.) */ |
c5aa993b JM |
1512 | if ((b->type == bp_catch_exec) || |
1513 | (b->type == bp_catch_vfork) || | |
1514 | (b->type == bp_catch_fork)) | |
1515 | { | |
c5aa993b JM |
1516 | continue; |
1517 | } | |
1518 | ||
1519 | /* bp_finish is a special case. The only way we ought to be able | |
1520 | to see one of these when an exec() has happened, is if the user | |
1521 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1522 | carries them to the call-site of the current callee, by setting | |
1523 | a temporary bp there and resuming. But in this case, the finish | |
1524 | will carry them entirely through the vfork & exec. | |
1525 | ||
1526 | We don't want to allow a bp_finish to remain inserted now. But | |
1527 | we can't safely delete it, 'cause finish_command has a handle to | |
1528 | the bp on a bpstat, and will later want to delete it. There's a | |
1529 | chance (and I've seen it happen) that if we delete the bp_finish | |
1530 | here, that its storage will get reused by the time finish_command | |
1531 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1532 | We really must allow finish_command to delete a bp_finish. | |
1533 | ||
53a5351d JM |
1534 | In the absense of a general solution for the "how do we know |
1535 | it's safe to delete something others may have handles to?" | |
1536 | problem, what we'll do here is just uninsert the bp_finish, and | |
1537 | let finish_command delete it. | |
1538 | ||
1539 | (We know the bp_finish is "doomed" in the sense that it's | |
1540 | momentary, and will be deleted as soon as finish_command sees | |
1541 | the inferior stopped. So it doesn't matter that the bp's | |
1542 | address is probably bogus in the new a.out, unlike e.g., the | |
1543 | solib breakpoints.) */ | |
c5aa993b | 1544 | |
c5aa993b JM |
1545 | if (b->type == bp_finish) |
1546 | { | |
1547 | continue; | |
1548 | } | |
1549 | ||
1550 | /* Without a symbolic address, we have little hope of the | |
1551 | pre-exec() address meaning the same thing in the post-exec() | |
1552 | a.out. */ | |
1553 | if (b->addr_string == NULL) | |
1554 | { | |
1555 | delete_breakpoint (b); | |
1556 | continue; | |
1557 | } | |
c5aa993b | 1558 | } |
1900040c MS |
1559 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
1560 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
1561 | } |
1562 | ||
1563 | int | |
fba45db2 | 1564 | detach_breakpoints (int pid) |
c906108c | 1565 | { |
0bde7532 | 1566 | struct bp_location *b; |
c906108c | 1567 | int val; |
ce696e05 | 1568 | struct cleanup *old_chain = save_inferior_ptid (); |
c5aa993b | 1569 | |
39f77062 | 1570 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 1571 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 1572 | |
ce696e05 KB |
1573 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1574 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1575 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1576 | { |
0bde7532 | 1577 | if (b->inserted) |
c5aa993b JM |
1578 | { |
1579 | val = remove_breakpoint (b, mark_inserted); | |
1580 | if (val != 0) | |
1581 | { | |
ce696e05 | 1582 | do_cleanups (old_chain); |
c5aa993b JM |
1583 | return val; |
1584 | } | |
1585 | } | |
1586 | } | |
ce696e05 | 1587 | do_cleanups (old_chain); |
c906108c SS |
1588 | return 0; |
1589 | } | |
1590 | ||
1591 | static int | |
0bde7532 | 1592 | remove_breakpoint (struct bp_location *b, insertion_state_t is) |
c906108c SS |
1593 | { |
1594 | int val; | |
c5aa993b | 1595 | |
0bde7532 | 1596 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
1597 | /* Permanent breakpoints cannot be inserted or removed. */ |
1598 | return 0; | |
1599 | ||
74960c60 VP |
1600 | /* The type of none suggests that owner is actually deleted. |
1601 | This should not ever happen. */ | |
1602 | gdb_assert (b->owner->type != bp_none); | |
0bde7532 DJ |
1603 | |
1604 | if (b->loc_type == bp_loc_software_breakpoint | |
1605 | || b->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 1606 | { |
c02f5703 MS |
1607 | /* "Normal" instruction breakpoint: either the standard |
1608 | trap-instruction bp (bp_breakpoint), or a | |
1609 | bp_hardware_breakpoint. */ | |
1610 | ||
1611 | /* First check to see if we have to handle an overlay. */ | |
1612 | if (overlay_debugging == ovly_off | |
0bde7532 DJ |
1613 | || b->section == NULL |
1614 | || !(section_is_overlay (b->section))) | |
c02f5703 MS |
1615 | { |
1616 | /* No overlay handling: just remove the breakpoint. */ | |
1617 | ||
0bde7532 | 1618 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1619 | val = target_remove_hw_breakpoint (&b->target_info); |
c02f5703 | 1620 | else |
8181d85f | 1621 | val = target_remove_breakpoint (&b->target_info); |
c02f5703 | 1622 | } |
c906108c SS |
1623 | else |
1624 | { | |
c02f5703 MS |
1625 | /* This breakpoint is in an overlay section. |
1626 | Did we set a breakpoint at the LMA? */ | |
1627 | if (!overlay_events_enabled) | |
1628 | { | |
1629 | /* Yes -- overlay event support is not active, so we | |
1630 | should have set a breakpoint at the LMA. Remove it. | |
1631 | */ | |
c02f5703 MS |
1632 | /* Ignore any failures: if the LMA is in ROM, we will |
1633 | have already warned when we failed to insert it. */ | |
0bde7532 | 1634 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1635 | target_remove_hw_breakpoint (&b->overlay_target_info); |
c02f5703 | 1636 | else |
8181d85f | 1637 | target_remove_breakpoint (&b->overlay_target_info); |
c02f5703 MS |
1638 | } |
1639 | /* Did we set a breakpoint at the VMA? | |
1640 | If so, we will have marked the breakpoint 'inserted'. */ | |
0bde7532 | 1641 | if (b->inserted) |
c906108c | 1642 | { |
c02f5703 MS |
1643 | /* Yes -- remove it. Previously we did not bother to |
1644 | remove the breakpoint if the section had been | |
1645 | unmapped, but let's not rely on that being safe. We | |
1646 | don't know what the overlay manager might do. */ | |
0bde7532 | 1647 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1648 | val = target_remove_hw_breakpoint (&b->target_info); |
aa67235e UW |
1649 | |
1650 | /* However, we should remove *software* breakpoints only | |
1651 | if the section is still mapped, or else we overwrite | |
1652 | wrong code with the saved shadow contents. */ | |
1653 | else if (section_is_mapped (b->section)) | |
8181d85f | 1654 | val = target_remove_breakpoint (&b->target_info); |
aa67235e UW |
1655 | else |
1656 | val = 0; | |
c906108c | 1657 | } |
c02f5703 MS |
1658 | else |
1659 | { | |
1660 | /* No -- not inserted, so no need to remove. No error. */ | |
1661 | val = 0; | |
1662 | } | |
c906108c | 1663 | } |
879d1e6b UW |
1664 | |
1665 | /* In some cases, we might not be able to remove a breakpoint | |
1666 | in a shared library that has already been removed, but we | |
1667 | have not yet processed the shlib unload event. */ | |
1668 | if (val && solib_address (b->address)) | |
1669 | val = 0; | |
1670 | ||
c906108c SS |
1671 | if (val) |
1672 | return val; | |
0bde7532 | 1673 | b->inserted = (is == mark_inserted); |
c906108c | 1674 | } |
a5606eee | 1675 | else if (b->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 1676 | { |
278cd55f AC |
1677 | struct value *v; |
1678 | struct value *n; | |
c5aa993b | 1679 | |
0bde7532 | 1680 | b->inserted = (is == mark_inserted); |
a5606eee VP |
1681 | val = target_remove_watchpoint (b->address, b->length, |
1682 | b->watchpoint_type); | |
2e70b7b9 | 1683 | |
c906108c | 1684 | /* Failure to remove any of the hardware watchpoints comes here. */ |
0bde7532 | 1685 | if ((is == mark_uninserted) && (b->inserted)) |
8a3fe4f8 | 1686 | warning (_("Could not remove hardware watchpoint %d."), |
0bde7532 | 1687 | b->owner->number); |
c906108c | 1688 | } |
0bde7532 DJ |
1689 | else if ((b->owner->type == bp_catch_fork || |
1690 | b->owner->type == bp_catch_vfork || | |
1691 | b->owner->type == bp_catch_exec) | |
468d015d | 1692 | && breakpoint_enabled (b->owner) |
0bde7532 | 1693 | && !b->duplicate) |
c906108c SS |
1694 | { |
1695 | val = -1; | |
0bde7532 | 1696 | switch (b->owner->type) |
c5aa993b JM |
1697 | { |
1698 | case bp_catch_fork: | |
39f77062 | 1699 | val = target_remove_fork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1700 | break; |
1701 | case bp_catch_vfork: | |
39f77062 | 1702 | val = target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b JM |
1703 | break; |
1704 | case bp_catch_exec: | |
39f77062 | 1705 | val = target_remove_exec_catchpoint (PIDGET (inferior_ptid)); |
c5aa993b | 1706 | break; |
ac9a91a7 | 1707 | default: |
8a3fe4f8 | 1708 | warning (_("Internal error, %s line %d."), __FILE__, __LINE__); |
ac9a91a7 | 1709 | break; |
c5aa993b | 1710 | } |
c906108c SS |
1711 | if (val) |
1712 | return val; | |
0bde7532 | 1713 | b->inserted = (is == mark_inserted); |
c906108c | 1714 | } |
c906108c SS |
1715 | |
1716 | return 0; | |
1717 | } | |
1718 | ||
1719 | /* Clear the "inserted" flag in all breakpoints. */ | |
1720 | ||
25b22b0a | 1721 | void |
fba45db2 | 1722 | mark_breakpoints_out (void) |
c906108c | 1723 | { |
075f6582 | 1724 | struct bp_location *bpt; |
c906108c | 1725 | |
075f6582 DJ |
1726 | ALL_BP_LOCATIONS (bpt) |
1727 | bpt->inserted = 0; | |
c906108c SS |
1728 | } |
1729 | ||
53a5351d JM |
1730 | /* Clear the "inserted" flag in all breakpoints and delete any |
1731 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1732 | |
1733 | Plus other such housekeeping that has to be done for breakpoints | |
1734 | between runs. | |
1735 | ||
53a5351d JM |
1736 | Note: this function gets called at the end of a run (by |
1737 | generic_mourn_inferior) and when a run begins (by | |
1738 | init_wait_for_inferior). */ | |
c906108c SS |
1739 | |
1740 | ||
1741 | ||
1742 | void | |
fba45db2 | 1743 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 1744 | { |
52f0bd74 | 1745 | struct breakpoint *b, *temp; |
075f6582 | 1746 | struct bp_location *bpt; |
c906108c | 1747 | |
075f6582 | 1748 | ALL_BP_LOCATIONS (bpt) |
514f746b AR |
1749 | if (bpt->owner->enable_state != bp_permanent) |
1750 | bpt->inserted = 0; | |
075f6582 | 1751 | |
c906108c | 1752 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 1753 | { |
c5aa993b JM |
1754 | switch (b->type) |
1755 | { | |
1756 | case bp_call_dummy: | |
1757 | case bp_watchpoint_scope: | |
c906108c | 1758 | |
c5aa993b JM |
1759 | /* If the call dummy breakpoint is at the entry point it will |
1760 | cause problems when the inferior is rerun, so we better | |
1761 | get rid of it. | |
c906108c | 1762 | |
c5aa993b JM |
1763 | Also get rid of scope breakpoints. */ |
1764 | delete_breakpoint (b); | |
1765 | break; | |
c906108c | 1766 | |
c5aa993b JM |
1767 | case bp_watchpoint: |
1768 | case bp_hardware_watchpoint: | |
1769 | case bp_read_watchpoint: | |
1770 | case bp_access_watchpoint: | |
c906108c | 1771 | |
c5aa993b JM |
1772 | /* Likewise for watchpoints on local expressions. */ |
1773 | if (b->exp_valid_block != NULL) | |
1774 | delete_breakpoint (b); | |
967af18d | 1775 | else if (context == inf_starting) |
c860120c PM |
1776 | { |
1777 | /* Reset val field to force reread of starting value | |
1778 | in insert_breakpoints. */ | |
1779 | if (b->val) | |
1780 | value_free (b->val); | |
1781 | b->val = NULL; | |
fa4727a6 | 1782 | b->val_valid = 0; |
c860120c | 1783 | } |
c5aa993b JM |
1784 | break; |
1785 | default: | |
c5aa993b JM |
1786 | break; |
1787 | } | |
1788 | } | |
c906108c SS |
1789 | } |
1790 | ||
c2c6d25f JM |
1791 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1792 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1793 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1794 | permanent breakpoint. | |
1795 | - When continuing from a location with an ordinary breakpoint, we | |
1796 | actually single step once before calling insert_breakpoints. | |
1797 | - When continuing from a localion with a permanent breakpoint, we | |
1798 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1799 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1800 | |
c2c6d25f | 1801 | enum breakpoint_here |
fba45db2 | 1802 | breakpoint_here_p (CORE_ADDR pc) |
c906108c | 1803 | { |
89f9893c | 1804 | const struct bp_location *bpt; |
c2c6d25f | 1805 | int any_breakpoint_here = 0; |
c906108c | 1806 | |
075f6582 DJ |
1807 | ALL_BP_LOCATIONS (bpt) |
1808 | { | |
1809 | if (bpt->loc_type != bp_loc_software_breakpoint | |
1810 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1811 | continue; | |
1812 | ||
468d015d | 1813 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1814 | || bpt->owner->enable_state == bp_permanent) |
1815 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1816 | { | |
1817 | if (overlay_debugging | |
1818 | && section_is_overlay (bpt->section) | |
1819 | && !section_is_mapped (bpt->section)) | |
1820 | continue; /* unmapped overlay -- can't be a match */ | |
1821 | else if (bpt->owner->enable_state == bp_permanent) | |
1822 | return permanent_breakpoint_here; | |
1823 | else | |
1824 | any_breakpoint_here = 1; | |
1825 | } | |
1826 | } | |
c906108c | 1827 | |
c2c6d25f | 1828 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1829 | } |
1830 | ||
c2c6d25f | 1831 | |
c36b740a VP |
1832 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
1833 | inserted using regular breakpoint_chain/bp_location_chain mechanism. | |
1834 | This does not check for single-step breakpoints, which are | |
1835 | inserted and removed using direct target manipulation. */ | |
c906108c SS |
1836 | |
1837 | int | |
c36b740a | 1838 | regular_breakpoint_inserted_here_p (CORE_ADDR pc) |
c906108c | 1839 | { |
89f9893c | 1840 | const struct bp_location *bpt; |
c906108c | 1841 | |
075f6582 | 1842 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1843 | { |
075f6582 DJ |
1844 | if (bpt->loc_type != bp_loc_software_breakpoint |
1845 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1846 | continue; | |
1847 | ||
1848 | if (bpt->inserted | |
1849 | && bpt->address == pc) /* bp is inserted and matches pc */ | |
1850 | { | |
1851 | if (overlay_debugging | |
1852 | && section_is_overlay (bpt->section) | |
1853 | && !section_is_mapped (bpt->section)) | |
1854 | continue; /* unmapped overlay -- can't be a match */ | |
1855 | else | |
1856 | return 1; | |
1857 | } | |
c5aa993b | 1858 | } |
c36b740a VP |
1859 | return 0; |
1860 | } | |
1861 | ||
1862 | /* Returns non-zero iff there's either regular breakpoint | |
1863 | or a single step breakpoint inserted at PC. */ | |
1864 | ||
1865 | int | |
1866 | breakpoint_inserted_here_p (CORE_ADDR pc) | |
1867 | { | |
1868 | if (regular_breakpoint_inserted_here_p (pc)) | |
1869 | return 1; | |
c906108c | 1870 | |
1aafd4da UW |
1871 | if (single_step_breakpoint_inserted_here_p (pc)) |
1872 | return 1; | |
1873 | ||
c906108c SS |
1874 | return 0; |
1875 | } | |
1876 | ||
4fa8626c DJ |
1877 | /* This function returns non-zero iff there is a software breakpoint |
1878 | inserted at PC. */ | |
1879 | ||
1880 | int | |
1881 | software_breakpoint_inserted_here_p (CORE_ADDR pc) | |
1882 | { | |
89f9893c | 1883 | const struct bp_location *bpt; |
4fa8626c DJ |
1884 | int any_breakpoint_here = 0; |
1885 | ||
1886 | ALL_BP_LOCATIONS (bpt) | |
1887 | { | |
1888 | if (bpt->loc_type != bp_loc_software_breakpoint) | |
1889 | continue; | |
1890 | ||
0d381245 | 1891 | if (bpt->inserted |
4fa8626c DJ |
1892 | && bpt->address == pc) /* bp is enabled and matches pc */ |
1893 | { | |
1894 | if (overlay_debugging | |
1895 | && section_is_overlay (bpt->section) | |
1896 | && !section_is_mapped (bpt->section)) | |
1897 | continue; /* unmapped overlay -- can't be a match */ | |
1898 | else | |
1899 | return 1; | |
1900 | } | |
1901 | } | |
1902 | ||
1aafd4da UW |
1903 | /* Also check for software single-step breakpoints. */ |
1904 | if (single_step_breakpoint_inserted_here_p (pc)) | |
1905 | return 1; | |
1906 | ||
4fa8626c DJ |
1907 | return 0; |
1908 | } | |
1909 | ||
075f6582 DJ |
1910 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
1911 | PC is valid for process/thread PTID. */ | |
c906108c SS |
1912 | |
1913 | int | |
39f77062 | 1914 | breakpoint_thread_match (CORE_ADDR pc, ptid_t ptid) |
c906108c | 1915 | { |
89f9893c | 1916 | const struct bp_location *bpt; |
c906108c SS |
1917 | int thread; |
1918 | ||
39f77062 | 1919 | thread = pid_to_thread_id (ptid); |
c906108c | 1920 | |
075f6582 | 1921 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1922 | { |
075f6582 DJ |
1923 | if (bpt->loc_type != bp_loc_software_breakpoint |
1924 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1925 | continue; | |
1926 | ||
468d015d | 1927 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1928 | || bpt->owner->enable_state == bp_permanent) |
1929 | && bpt->address == pc | |
1930 | && (bpt->owner->thread == -1 || bpt->owner->thread == thread)) | |
1931 | { | |
1932 | if (overlay_debugging | |
1933 | && section_is_overlay (bpt->section) | |
1934 | && !section_is_mapped (bpt->section)) | |
1935 | continue; /* unmapped overlay -- can't be a match */ | |
1936 | else | |
1937 | return 1; | |
1938 | } | |
c5aa993b | 1939 | } |
c906108c SS |
1940 | |
1941 | return 0; | |
1942 | } | |
c906108c | 1943 | \f |
c5aa993b | 1944 | |
c906108c SS |
1945 | /* bpstat stuff. External routines' interfaces are documented |
1946 | in breakpoint.h. */ | |
1947 | ||
1948 | int | |
fba45db2 | 1949 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c SS |
1950 | { |
1951 | return | |
1952 | (ep->type == bp_catch_load) | |
1953 | || (ep->type == bp_catch_unload) | |
1954 | || (ep->type == bp_catch_fork) | |
1955 | || (ep->type == bp_catch_vfork) | |
dfdfb3ca | 1956 | || (ep->type == bp_catch_exec); |
c906108c | 1957 | |
c5aa993b | 1958 | /* ??rehrauer: Add more kinds here, as are implemented... */ |
c906108c | 1959 | } |
c5aa993b | 1960 | |
c906108c | 1961 | int |
fba45db2 | 1962 | ep_is_shlib_catchpoint (struct breakpoint *ep) |
c906108c SS |
1963 | { |
1964 | return | |
1965 | (ep->type == bp_catch_load) | |
d85310f7 | 1966 | || (ep->type == bp_catch_unload); |
c906108c SS |
1967 | } |
1968 | ||
198757a8 VP |
1969 | void |
1970 | bpstat_free (bpstat bs) | |
1971 | { | |
1972 | if (bs->old_val != NULL) | |
1973 | value_free (bs->old_val); | |
1974 | free_command_lines (&bs->commands); | |
1975 | xfree (bs); | |
1976 | } | |
1977 | ||
c906108c SS |
1978 | /* Clear a bpstat so that it says we are not at any breakpoint. |
1979 | Also free any storage that is part of a bpstat. */ | |
1980 | ||
1981 | void | |
fba45db2 | 1982 | bpstat_clear (bpstat *bsp) |
c906108c SS |
1983 | { |
1984 | bpstat p; | |
1985 | bpstat q; | |
1986 | ||
1987 | if (bsp == 0) | |
1988 | return; | |
1989 | p = *bsp; | |
1990 | while (p != NULL) | |
1991 | { | |
1992 | q = p->next; | |
198757a8 | 1993 | bpstat_free (p); |
c906108c SS |
1994 | p = q; |
1995 | } | |
1996 | *bsp = NULL; | |
1997 | } | |
1998 | ||
1999 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
2000 | is part of the bpstat is copied as well. */ | |
2001 | ||
2002 | bpstat | |
fba45db2 | 2003 | bpstat_copy (bpstat bs) |
c906108c SS |
2004 | { |
2005 | bpstat p = NULL; | |
2006 | bpstat tmp; | |
2007 | bpstat retval = NULL; | |
2008 | ||
2009 | if (bs == NULL) | |
2010 | return bs; | |
2011 | ||
2012 | for (; bs != NULL; bs = bs->next) | |
2013 | { | |
2014 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
2015 | memcpy (tmp, bs, sizeof (*tmp)); | |
31cc81e9 DJ |
2016 | if (bs->commands != NULL) |
2017 | tmp->commands = copy_command_lines (bs->commands); | |
2018 | if (bs->old_val != NULL) | |
3c3185ac JK |
2019 | { |
2020 | tmp->old_val = value_copy (bs->old_val); | |
2021 | release_value (tmp->old_val); | |
2022 | } | |
31cc81e9 | 2023 | |
c906108c SS |
2024 | if (p == NULL) |
2025 | /* This is the first thing in the chain. */ | |
2026 | retval = tmp; | |
2027 | else | |
2028 | p->next = tmp; | |
2029 | p = tmp; | |
2030 | } | |
2031 | p->next = NULL; | |
2032 | return retval; | |
2033 | } | |
2034 | ||
2035 | /* Find the bpstat associated with this breakpoint */ | |
2036 | ||
2037 | bpstat | |
fba45db2 | 2038 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 2039 | { |
c5aa993b JM |
2040 | if (bsp == NULL) |
2041 | return NULL; | |
c906108c | 2042 | |
c5aa993b JM |
2043 | for (; bsp != NULL; bsp = bsp->next) |
2044 | { | |
4f8d1dc6 | 2045 | if (bsp->breakpoint_at && bsp->breakpoint_at->owner == breakpoint) |
c5aa993b JM |
2046 | return bsp; |
2047 | } | |
c906108c SS |
2048 | return NULL; |
2049 | } | |
2050 | ||
2051 | /* Find a step_resume breakpoint associated with this bpstat. | |
2052 | (If there are multiple step_resume bp's on the list, this function | |
2053 | will arbitrarily pick one.) | |
2054 | ||
2055 | It is an error to use this function if BPSTAT doesn't contain a | |
2056 | step_resume breakpoint. | |
2057 | ||
2058 | See wait_for_inferior's use of this function. */ | |
2059 | struct breakpoint * | |
fba45db2 | 2060 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c | 2061 | { |
8601f500 MS |
2062 | int current_thread; |
2063 | ||
8a3fe4f8 | 2064 | gdb_assert (bsp != NULL); |
c906108c | 2065 | |
8601f500 MS |
2066 | current_thread = pid_to_thread_id (inferior_ptid); |
2067 | ||
c906108c SS |
2068 | for (; bsp != NULL; bsp = bsp->next) |
2069 | { | |
2070 | if ((bsp->breakpoint_at != NULL) && | |
4f8d1dc6 VP |
2071 | (bsp->breakpoint_at->owner->type == bp_step_resume) && |
2072 | (bsp->breakpoint_at->owner->thread == current_thread || | |
2073 | bsp->breakpoint_at->owner->thread == -1)) | |
2074 | return bsp->breakpoint_at->owner; | |
c906108c SS |
2075 | } |
2076 | ||
8a3fe4f8 | 2077 | internal_error (__FILE__, __LINE__, _("No step_resume breakpoint found.")); |
c906108c SS |
2078 | } |
2079 | ||
2080 | ||
8671a17b | 2081 | /* Put in *NUM the breakpoint number of the first breakpoint we are stopped |
c906108c SS |
2082 | at. *BSP upon return is a bpstat which points to the remaining |
2083 | breakpoints stopped at (but which is not guaranteed to be good for | |
2084 | anything but further calls to bpstat_num). | |
8671a17b PA |
2085 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
2086 | Return -1 if stopped at a breakpoint that has been deleted since | |
2087 | we set it. | |
2088 | Return 1 otherwise. */ | |
c906108c SS |
2089 | |
2090 | int | |
8671a17b | 2091 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
2092 | { |
2093 | struct breakpoint *b; | |
2094 | ||
2095 | if ((*bsp) == NULL) | |
2096 | return 0; /* No more breakpoint values */ | |
8671a17b | 2097 | |
4f8d1dc6 VP |
2098 | /* We assume we'll never have several bpstats that |
2099 | correspond to a single breakpoint -- otherwise, | |
2100 | this function might return the same number more | |
2101 | than once and this will look ugly. */ | |
2102 | b = (*bsp)->breakpoint_at ? (*bsp)->breakpoint_at->owner : NULL; | |
8671a17b PA |
2103 | *bsp = (*bsp)->next; |
2104 | if (b == NULL) | |
2105 | return -1; /* breakpoint that's been deleted since */ | |
2106 | ||
2107 | *num = b->number; /* We have its number */ | |
2108 | return 1; | |
c906108c SS |
2109 | } |
2110 | ||
2111 | /* Modify BS so that the actions will not be performed. */ | |
2112 | ||
2113 | void | |
fba45db2 | 2114 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
2115 | { |
2116 | for (; bs != NULL; bs = bs->next) | |
2117 | { | |
c2b8ed2c | 2118 | free_command_lines (&bs->commands); |
c906108c SS |
2119 | if (bs->old_val != NULL) |
2120 | { | |
2121 | value_free (bs->old_val); | |
2122 | bs->old_val = NULL; | |
2123 | } | |
2124 | } | |
2125 | } | |
2126 | ||
2127 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ | |
c906108c | 2128 | static void |
4efb68b1 | 2129 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
2130 | { |
2131 | executing_breakpoint_commands = 0; | |
2132 | } | |
2133 | ||
2134 | /* Execute all the commands associated with all the breakpoints at this | |
2135 | location. Any of these commands could cause the process to proceed | |
2136 | beyond this point, etc. We look out for such changes by checking | |
347bddb7 | 2137 | the global "breakpoint_proceeded" after each command. |
c906108c | 2138 | |
347bddb7 PA |
2139 | Returns true if a breakpoint command resumed the inferior. In that |
2140 | case, it is the caller's responsibility to recall it again with the | |
2141 | bpstat of the current thread. */ | |
2142 | ||
2143 | static int | |
2144 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
2145 | { |
2146 | bpstat bs; | |
2147 | struct cleanup *old_chain; | |
347bddb7 | 2148 | int again = 0; |
c906108c SS |
2149 | |
2150 | /* Avoid endless recursion if a `source' command is contained | |
2151 | in bs->commands. */ | |
2152 | if (executing_breakpoint_commands) | |
347bddb7 | 2153 | return 0; |
c906108c SS |
2154 | |
2155 | executing_breakpoint_commands = 1; | |
2156 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
2157 | ||
c906108c SS |
2158 | /* This pointer will iterate over the list of bpstat's. */ |
2159 | bs = *bsp; | |
2160 | ||
2161 | breakpoint_proceeded = 0; | |
2162 | for (; bs != NULL; bs = bs->next) | |
2163 | { | |
6c50ab1c JB |
2164 | struct command_line *cmd; |
2165 | struct cleanup *this_cmd_tree_chain; | |
2166 | ||
2167 | /* Take ownership of the BSP's command tree, if it has one. | |
2168 | ||
2169 | The command tree could legitimately contain commands like | |
2170 | 'step' and 'next', which call clear_proceed_status, which | |
2171 | frees stop_bpstat's command tree. To make sure this doesn't | |
2172 | free the tree we're executing out from under us, we need to | |
2173 | take ownership of the tree ourselves. Since a given bpstat's | |
2174 | commands are only executed once, we don't need to copy it; we | |
2175 | can clear the pointer in the bpstat, and make sure we free | |
2176 | the tree when we're done. */ | |
c906108c | 2177 | cmd = bs->commands; |
6c50ab1c JB |
2178 | bs->commands = 0; |
2179 | this_cmd_tree_chain = make_cleanup_free_command_lines (&cmd); | |
2180 | ||
c906108c SS |
2181 | while (cmd != NULL) |
2182 | { | |
2183 | execute_control_command (cmd); | |
2184 | ||
2185 | if (breakpoint_proceeded) | |
2186 | break; | |
2187 | else | |
2188 | cmd = cmd->next; | |
2189 | } | |
6c50ab1c JB |
2190 | |
2191 | /* We can free this command tree now. */ | |
2192 | do_cleanups (this_cmd_tree_chain); | |
2193 | ||
c906108c | 2194 | if (breakpoint_proceeded) |
32c1e744 VP |
2195 | { |
2196 | if (target_can_async_p ()) | |
347bddb7 PA |
2197 | /* If we are in async mode, then the target might be still |
2198 | running, not stopped at any breakpoint, so nothing for | |
2199 | us to do here -- just return to the event loop. */ | |
2200 | ; | |
32c1e744 VP |
2201 | else |
2202 | /* In sync mode, when execute_control_command returns | |
2203 | we're already standing on the next breakpoint. | |
347bddb7 PA |
2204 | Breakpoint commands for that stop were not run, since |
2205 | execute_command does not run breakpoint commands -- | |
2206 | only command_line_handler does, but that one is not | |
2207 | involved in execution of breakpoint commands. So, we | |
2208 | can now execute breakpoint commands. It should be | |
2209 | noted that making execute_command do bpstat actions is | |
2210 | not an option -- in this case we'll have recursive | |
2211 | invocation of bpstat for each breakpoint with a | |
2212 | command, and can easily blow up GDB stack. Instead, we | |
2213 | return true, which will trigger the caller to recall us | |
2214 | with the new stop_bpstat. */ | |
2215 | again = 1; | |
2216 | break; | |
32c1e744 | 2217 | } |
c906108c | 2218 | } |
c2b8ed2c | 2219 | do_cleanups (old_chain); |
347bddb7 PA |
2220 | return again; |
2221 | } | |
2222 | ||
2223 | void | |
2224 | bpstat_do_actions (void) | |
2225 | { | |
2226 | /* Do any commands attached to breakpoint we are stopped at. */ | |
2227 | while (!ptid_equal (inferior_ptid, null_ptid) | |
2228 | && target_has_execution | |
2229 | && !is_exited (inferior_ptid) | |
2230 | && !is_executing (inferior_ptid)) | |
2231 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
2232 | and only return when it is stopped at the next breakpoint, we | |
2233 | keep doing breakpoint actions until it returns false to | |
2234 | indicate the inferior was not resumed. */ | |
2235 | if (!bpstat_do_actions_1 (&inferior_thread ()->stop_bpstat)) | |
2236 | break; | |
c906108c SS |
2237 | } |
2238 | ||
fa4727a6 DJ |
2239 | /* Print out the (old or new) value associated with a watchpoint. */ |
2240 | ||
2241 | static void | |
2242 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
2243 | { | |
2244 | if (val == NULL) | |
2245 | fprintf_unfiltered (stream, _("<unreadable>")); | |
2246 | else | |
2247 | value_print (val, stream, 0, Val_pretty_default); | |
2248 | } | |
2249 | ||
e514a9d6 | 2250 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 2251 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
2252 | by having it set different print_it values. |
2253 | ||
2254 | Current scheme: When we stop, bpstat_print() is called. It loops | |
2255 | through the bpstat list of things causing this stop, calling the | |
2256 | print_bp_stop_message function on each one. The behavior of the | |
2257 | print_bp_stop_message function depends on the print_it field of | |
2258 | bpstat. If such field so indicates, call this function here. | |
2259 | ||
2260 | Return values from this routine (ultimately used by bpstat_print() | |
2261 | and normal_stop() to decide what to do): | |
2262 | PRINT_NOTHING: Means we already printed all we needed to print, | |
2263 | don't print anything else. | |
2264 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
2265 | that something to be followed by a location. | |
2266 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
2267 | that something to be followed by a location. | |
2268 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
2269 | analysis. */ | |
c906108c | 2270 | |
917317f4 | 2271 | static enum print_stop_action |
fba45db2 | 2272 | print_it_typical (bpstat bs) |
c906108c | 2273 | { |
3b31d625 | 2274 | struct cleanup *old_chain, *ui_out_chain; |
4f8d1dc6 | 2275 | struct breakpoint *b; |
89f9893c | 2276 | const struct bp_location *bl; |
8b93c638 | 2277 | struct ui_stream *stb; |
2cec12e5 | 2278 | int bp_temp = 0; |
8b93c638 | 2279 | stb = ui_out_stream_new (uiout); |
b02eeafb | 2280 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c SS |
2281 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
2282 | which has since been deleted. */ | |
e514a9d6 | 2283 | if (bs->breakpoint_at == NULL) |
917317f4 | 2284 | return PRINT_UNKNOWN; |
0d381245 VP |
2285 | bl = bs->breakpoint_at; |
2286 | b = bl->owner; | |
c906108c | 2287 | |
4f8d1dc6 | 2288 | switch (b->type) |
c906108c | 2289 | { |
e514a9d6 JM |
2290 | case bp_breakpoint: |
2291 | case bp_hardware_breakpoint: | |
2cec12e5 | 2292 | bp_temp = bs->breakpoint_at->owner->disposition == disp_del; |
0d381245 VP |
2293 | if (bl->address != bl->requested_address) |
2294 | breakpoint_adjustment_warning (bl->requested_address, | |
2295 | bl->address, | |
4f8d1dc6 VP |
2296 | b->number, 1); |
2297 | annotate_breakpoint (b->number); | |
2cec12e5 AR |
2298 | if (bp_temp) |
2299 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
2300 | else | |
2301 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 2302 | if (ui_out_is_mi_like_p (uiout)) |
2cec12e5 AR |
2303 | { |
2304 | ui_out_field_string (uiout, "reason", | |
2305 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
2306 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
2307 | } | |
4f8d1dc6 | 2308 | ui_out_field_int (uiout, "bkptno", b->number); |
8b93c638 JM |
2309 | ui_out_text (uiout, ", "); |
2310 | return PRINT_SRC_AND_LOC; | |
e514a9d6 JM |
2311 | break; |
2312 | ||
2313 | case bp_shlib_event: | |
917317f4 JM |
2314 | /* Did we stop because the user set the stop_on_solib_events |
2315 | variable? (If so, we report this as a generic, "Stopped due | |
2316 | to shlib event" message.) */ | |
a3f17187 | 2317 | printf_filtered (_("Stopped due to shared library event\n")); |
e514a9d6 JM |
2318 | return PRINT_NOTHING; |
2319 | break; | |
2320 | ||
c4093a6a JM |
2321 | case bp_thread_event: |
2322 | /* Not sure how we will get here. | |
2323 | GDB should not stop for these breakpoints. */ | |
a3f17187 | 2324 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); |
c4093a6a JM |
2325 | return PRINT_NOTHING; |
2326 | break; | |
2327 | ||
1900040c MS |
2328 | case bp_overlay_event: |
2329 | /* By analogy with the thread event, GDB should not stop for these. */ | |
a3f17187 | 2330 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
1900040c MS |
2331 | return PRINT_NOTHING; |
2332 | break; | |
2333 | ||
e514a9d6 | 2334 | case bp_catch_load: |
4f8d1dc6 | 2335 | annotate_catchpoint (b->number); |
a3f17187 | 2336 | printf_filtered (_("\nCatchpoint %d (loaded %s), "), |
4f8d1dc6 VP |
2337 | b->number, |
2338 | b->triggered_dll_pathname); | |
e514a9d6 JM |
2339 | return PRINT_SRC_AND_LOC; |
2340 | break; | |
2341 | ||
2342 | case bp_catch_unload: | |
4f8d1dc6 | 2343 | annotate_catchpoint (b->number); |
a3f17187 | 2344 | printf_filtered (_("\nCatchpoint %d (unloaded %s), "), |
4f8d1dc6 VP |
2345 | b->number, |
2346 | b->triggered_dll_pathname); | |
e514a9d6 JM |
2347 | return PRINT_SRC_AND_LOC; |
2348 | break; | |
2349 | ||
2350 | case bp_catch_fork: | |
4f8d1dc6 | 2351 | annotate_catchpoint (b->number); |
a3f17187 | 2352 | printf_filtered (_("\nCatchpoint %d (forked process %d), "), |
4f8d1dc6 | 2353 | b->number, |
3a3e9ee3 | 2354 | ptid_get_pid (b->forked_inferior_pid)); |
917317f4 | 2355 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2356 | break; |
2357 | ||
2358 | case bp_catch_vfork: | |
4f8d1dc6 | 2359 | annotate_catchpoint (b->number); |
a3f17187 | 2360 | printf_filtered (_("\nCatchpoint %d (vforked process %d), "), |
4f8d1dc6 | 2361 | b->number, |
3a3e9ee3 | 2362 | ptid_get_pid (b->forked_inferior_pid)); |
e514a9d6 JM |
2363 | return PRINT_SRC_AND_LOC; |
2364 | break; | |
2365 | ||
2366 | case bp_catch_exec: | |
4f8d1dc6 | 2367 | annotate_catchpoint (b->number); |
a3f17187 | 2368 | printf_filtered (_("\nCatchpoint %d (exec'd %s), "), |
4f8d1dc6 VP |
2369 | b->number, |
2370 | b->exec_pathname); | |
917317f4 | 2371 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2372 | break; |
2373 | ||
e514a9d6 JM |
2374 | case bp_watchpoint: |
2375 | case bp_hardware_watchpoint: | |
fa4727a6 DJ |
2376 | annotate_watchpoint (b->number); |
2377 | if (ui_out_is_mi_like_p (uiout)) | |
2378 | ui_out_field_string | |
2379 | (uiout, "reason", | |
2380 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
2381 | mention (b); | |
2382 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
2383 | ui_out_text (uiout, "\nOld value = "); | |
2384 | watchpoint_value_print (bs->old_val, stb->stream); | |
2385 | ui_out_field_stream (uiout, "old", stb); | |
2386 | ui_out_text (uiout, "\nNew value = "); | |
2387 | watchpoint_value_print (b->val, stb->stream); | |
2388 | ui_out_field_stream (uiout, "new", stb); | |
2389 | do_cleanups (ui_out_chain); | |
2390 | ui_out_text (uiout, "\n"); | |
e514a9d6 JM |
2391 | /* More than one watchpoint may have been triggered. */ |
2392 | return PRINT_UNKNOWN; | |
2393 | break; | |
2394 | ||
2395 | case bp_read_watchpoint: | |
9dc5e2a9 | 2396 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2397 | ui_out_field_string |
2398 | (uiout, "reason", | |
2399 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 2400 | mention (b); |
3b31d625 | 2401 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 2402 | ui_out_text (uiout, "\nValue = "); |
fa4727a6 | 2403 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 2404 | ui_out_field_stream (uiout, "value", stb); |
3b31d625 | 2405 | do_cleanups (ui_out_chain); |
8b93c638 | 2406 | ui_out_text (uiout, "\n"); |
917317f4 | 2407 | return PRINT_UNKNOWN; |
e514a9d6 JM |
2408 | break; |
2409 | ||
2410 | case bp_access_watchpoint: | |
fa4727a6 | 2411 | if (bs->old_val != NULL) |
8b93c638 | 2412 | { |
4f8d1dc6 | 2413 | annotate_watchpoint (b->number); |
9dc5e2a9 | 2414 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2415 | ui_out_field_string |
2416 | (uiout, "reason", | |
2417 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 2418 | mention (b); |
3b31d625 | 2419 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 2420 | ui_out_text (uiout, "\nOld value = "); |
fa4727a6 | 2421 | watchpoint_value_print (bs->old_val, stb->stream); |
8b93c638 | 2422 | ui_out_field_stream (uiout, "old", stb); |
8b93c638 JM |
2423 | ui_out_text (uiout, "\nNew value = "); |
2424 | } | |
2425 | else | |
2426 | { | |
4f8d1dc6 | 2427 | mention (b); |
9dc5e2a9 | 2428 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2429 | ui_out_field_string |
2430 | (uiout, "reason", | |
2431 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
3b31d625 | 2432 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2433 | ui_out_text (uiout, "\nValue = "); |
2434 | } | |
fa4727a6 | 2435 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 2436 | ui_out_field_stream (uiout, "new", stb); |
3b31d625 | 2437 | do_cleanups (ui_out_chain); |
8b93c638 | 2438 | ui_out_text (uiout, "\n"); |
917317f4 | 2439 | return PRINT_UNKNOWN; |
e514a9d6 | 2440 | break; |
4ce44c66 | 2441 | |
e514a9d6 JM |
2442 | /* Fall through, we don't deal with these types of breakpoints |
2443 | here. */ | |
2444 | ||
11cf8741 | 2445 | case bp_finish: |
9dc5e2a9 | 2446 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2447 | ui_out_field_string |
2448 | (uiout, "reason", | |
2449 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
8b93c638 JM |
2450 | return PRINT_UNKNOWN; |
2451 | break; | |
2452 | ||
e514a9d6 | 2453 | case bp_until: |
9dc5e2a9 | 2454 | if (ui_out_is_mi_like_p (uiout)) |
1fbc2a49 NR |
2455 | ui_out_field_string |
2456 | (uiout, "reason", | |
2457 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
8b93c638 JM |
2458 | return PRINT_UNKNOWN; |
2459 | break; | |
2460 | ||
c2d11a7d | 2461 | case bp_none: |
e514a9d6 JM |
2462 | case bp_longjmp: |
2463 | case bp_longjmp_resume: | |
2464 | case bp_step_resume: | |
e514a9d6 JM |
2465 | case bp_watchpoint_scope: |
2466 | case bp_call_dummy: | |
2467 | default: | |
2468 | return PRINT_UNKNOWN; | |
2469 | } | |
2470 | } | |
2471 | ||
2472 | /* Generic routine for printing messages indicating why we | |
2473 | stopped. The behavior of this function depends on the value | |
2474 | 'print_it' in the bpstat structure. Under some circumstances we | |
2475 | may decide not to print anything here and delegate the task to | |
2476 | normal_stop(). */ | |
2477 | ||
2478 | static enum print_stop_action | |
2479 | print_bp_stop_message (bpstat bs) | |
2480 | { | |
2481 | switch (bs->print_it) | |
2482 | { | |
2483 | case print_it_noop: | |
2484 | /* Nothing should be printed for this bpstat entry. */ | |
2485 | return PRINT_UNKNOWN; | |
2486 | break; | |
2487 | ||
2488 | case print_it_done: | |
2489 | /* We still want to print the frame, but we already printed the | |
2490 | relevant messages. */ | |
2491 | return PRINT_SRC_AND_LOC; | |
2492 | break; | |
2493 | ||
2494 | case print_it_normal: | |
4f8d1dc6 | 2495 | { |
89f9893c | 2496 | const struct bp_location *bl = bs->breakpoint_at; |
4f8d1dc6 VP |
2497 | struct breakpoint *b = bl ? bl->owner : NULL; |
2498 | ||
2499 | /* Normal case. Call the breakpoint's print_it method, or | |
2500 | print_it_typical. */ | |
2501 | /* FIXME: how breakpoint can ever be NULL here? */ | |
2502 | if (b != NULL && b->ops != NULL && b->ops->print_it != NULL) | |
2503 | return b->ops->print_it (b); | |
2504 | else | |
2505 | return print_it_typical (bs); | |
2506 | } | |
2507 | break; | |
3086aeae | 2508 | |
e514a9d6 | 2509 | default: |
8e65ff28 | 2510 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2511 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 2512 | break; |
c906108c | 2513 | } |
c906108c SS |
2514 | } |
2515 | ||
e514a9d6 JM |
2516 | /* Print a message indicating what happened. This is called from |
2517 | normal_stop(). The input to this routine is the head of the bpstat | |
2518 | list - a list of the eventpoints that caused this stop. This | |
2519 | routine calls the generic print routine for printing a message | |
2520 | about reasons for stopping. This will print (for example) the | |
2521 | "Breakpoint n," part of the output. The return value of this | |
2522 | routine is one of: | |
c906108c | 2523 | |
917317f4 JM |
2524 | PRINT_UNKNOWN: Means we printed nothing |
2525 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2526 | code to print the location. An example is |
2527 | "Breakpoint 1, " which should be followed by | |
2528 | the location. | |
917317f4 | 2529 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2530 | to also print the location part of the message. |
2531 | An example is the catch/throw messages, which | |
917317f4 JM |
2532 | don't require a location appended to the end. |
2533 | PRINT_NOTHING: We have done some printing and we don't need any | |
2534 | further info to be printed.*/ | |
c906108c | 2535 | |
917317f4 | 2536 | enum print_stop_action |
fba45db2 | 2537 | bpstat_print (bpstat bs) |
c906108c SS |
2538 | { |
2539 | int val; | |
c5aa993b | 2540 | |
c906108c | 2541 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2542 | (Currently all watchpoints go on the bpstat whether hit or not. |
2543 | That probably could (should) be changed, provided care is taken | |
c906108c | 2544 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2545 | for (; bs; bs = bs->next) |
2546 | { | |
2547 | val = print_bp_stop_message (bs); | |
2548 | if (val == PRINT_SRC_ONLY | |
2549 | || val == PRINT_SRC_AND_LOC | |
2550 | || val == PRINT_NOTHING) | |
2551 | return val; | |
2552 | } | |
c906108c | 2553 | |
e514a9d6 JM |
2554 | /* We reached the end of the chain, or we got a null BS to start |
2555 | with and nothing was printed. */ | |
917317f4 | 2556 | return PRINT_UNKNOWN; |
c906108c SS |
2557 | } |
2558 | ||
2559 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2560 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2561 | The argument is a "struct expression *" that has been cast to char * to | |
2562 | make it pass through catch_errors. */ | |
2563 | ||
2564 | static int | |
4efb68b1 | 2565 | breakpoint_cond_eval (void *exp) |
c906108c | 2566 | { |
278cd55f | 2567 | struct value *mark = value_mark (); |
c5aa993b | 2568 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2569 | value_free_to_mark (mark); |
2570 | return i; | |
2571 | } | |
2572 | ||
2573 | /* Allocate a new bpstat and chain it to the current one. */ | |
2574 | ||
2575 | static bpstat | |
89f9893c | 2576 | bpstat_alloc (const struct bp_location *bl, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
2577 | { |
2578 | bpstat bs; | |
2579 | ||
2580 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2581 | cbs->next = bs; | |
4f8d1dc6 | 2582 | bs->breakpoint_at = bl; |
c906108c SS |
2583 | /* If the condition is false, etc., don't do the commands. */ |
2584 | bs->commands = NULL; | |
2585 | bs->old_val = NULL; | |
2586 | bs->print_it = print_it_normal; | |
2587 | return bs; | |
2588 | } | |
2589 | \f | |
d983da9c DJ |
2590 | /* The target has stopped with waitstatus WS. Check if any hardware |
2591 | watchpoints have triggered, according to the target. */ | |
2592 | ||
2593 | int | |
2594 | watchpoints_triggered (struct target_waitstatus *ws) | |
2595 | { | |
2596 | int stopped_by_watchpoint = STOPPED_BY_WATCHPOINT (*ws); | |
2597 | CORE_ADDR addr; | |
2598 | struct breakpoint *b; | |
2599 | ||
2600 | if (!stopped_by_watchpoint) | |
2601 | { | |
2602 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
2603 | as not triggered. */ | |
2604 | ALL_BREAKPOINTS (b) | |
2605 | if (b->type == bp_hardware_watchpoint | |
2606 | || b->type == bp_read_watchpoint | |
2607 | || b->type == bp_access_watchpoint) | |
2608 | b->watchpoint_triggered = watch_triggered_no; | |
2609 | ||
2610 | return 0; | |
2611 | } | |
2612 | ||
2613 | if (!target_stopped_data_address (¤t_target, &addr)) | |
2614 | { | |
2615 | /* We were stopped by a watchpoint, but we don't know where. | |
2616 | Mark all watchpoints as unknown. */ | |
2617 | ALL_BREAKPOINTS (b) | |
2618 | if (b->type == bp_hardware_watchpoint | |
2619 | || b->type == bp_read_watchpoint | |
2620 | || b->type == bp_access_watchpoint) | |
2621 | b->watchpoint_triggered = watch_triggered_unknown; | |
2622 | ||
2623 | return stopped_by_watchpoint; | |
2624 | } | |
2625 | ||
2626 | /* The target could report the data address. Mark watchpoints | |
2627 | affected by this data address as triggered, and all others as not | |
2628 | triggered. */ | |
2629 | ||
2630 | ALL_BREAKPOINTS (b) | |
2631 | if (b->type == bp_hardware_watchpoint | |
2632 | || b->type == bp_read_watchpoint | |
2633 | || b->type == bp_access_watchpoint) | |
2634 | { | |
a5606eee | 2635 | struct bp_location *loc; |
d983da9c DJ |
2636 | struct value *v; |
2637 | ||
2638 | b->watchpoint_triggered = watch_triggered_no; | |
a5606eee VP |
2639 | for (loc = b->loc; loc; loc = loc->next) |
2640 | /* Exact match not required. Within range is | |
2641 | sufficient. */ | |
5009afc5 AS |
2642 | if (target_watchpoint_addr_within_range (¤t_target, |
2643 | addr, loc->address, | |
2644 | loc->length)) | |
a5606eee VP |
2645 | { |
2646 | b->watchpoint_triggered = watch_triggered_yes; | |
2647 | break; | |
2648 | } | |
d983da9c DJ |
2649 | } |
2650 | ||
2651 | return 1; | |
2652 | } | |
2653 | ||
c906108c SS |
2654 | /* Possible return values for watchpoint_check (this can't be an enum |
2655 | because of check_errors). */ | |
2656 | /* The watchpoint has been deleted. */ | |
2657 | #define WP_DELETED 1 | |
2658 | /* The value has changed. */ | |
2659 | #define WP_VALUE_CHANGED 2 | |
2660 | /* The value has not changed. */ | |
2661 | #define WP_VALUE_NOT_CHANGED 3 | |
2662 | ||
2663 | #define BP_TEMPFLAG 1 | |
2664 | #define BP_HARDWAREFLAG 2 | |
2665 | ||
2666 | /* Check watchpoint condition. */ | |
2667 | ||
2668 | static int | |
4efb68b1 | 2669 | watchpoint_check (void *p) |
c906108c SS |
2670 | { |
2671 | bpstat bs = (bpstat) p; | |
2672 | struct breakpoint *b; | |
2673 | struct frame_info *fr; | |
2674 | int within_current_scope; | |
2675 | ||
4f8d1dc6 | 2676 | b = bs->breakpoint_at->owner; |
c906108c SS |
2677 | |
2678 | if (b->exp_valid_block == NULL) | |
2679 | within_current_scope = 1; | |
2680 | else | |
2681 | { | |
2682 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2683 | any chance of handling watchpoints on local variables, we'll need |
2684 | the frame chain (so we can determine if we're in scope). */ | |
2685 | reinit_frame_cache (); | |
101dcfbe | 2686 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 2687 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
2688 | |
2689 | /* If we've gotten confused in the unwinder, we might have | |
2690 | returned a frame that can't describe this variable. */ | |
2691 | if (within_current_scope | |
7f0df278 DJ |
2692 | && (block_linkage_function (b->exp_valid_block) |
2693 | != get_frame_function (fr))) | |
69fbadd5 DJ |
2694 | within_current_scope = 0; |
2695 | ||
c12260ac CV |
2696 | /* in_function_epilogue_p() returns a non-zero value if we're still |
2697 | in the function but the stack frame has already been invalidated. | |
2698 | Since we can't rely on the values of local variables after the | |
2699 | stack has been destroyed, we are treating the watchpoint in that | |
a957e642 CV |
2700 | state as `not changed' without further checking. |
2701 | ||
2702 | vinschen/2003-09-04: The former implementation left out the case | |
2703 | that the watchpoint frame couldn't be found by frame_find_by_id() | |
2704 | because the current PC is currently in an epilogue. Calling | |
2705 | gdbarch_in_function_epilogue_p() also when fr == NULL fixes that. */ | |
a6fbcf2f | 2706 | if ((!within_current_scope || fr == get_current_frame ()) |
c12260ac CV |
2707 | && gdbarch_in_function_epilogue_p (current_gdbarch, read_pc ())) |
2708 | return WP_VALUE_NOT_CHANGED; | |
a6fbcf2f | 2709 | if (fr && within_current_scope) |
c906108c SS |
2710 | /* If we end up stopping, the current frame will get selected |
2711 | in normal_stop. So this call to select_frame won't affect | |
2712 | the user. */ | |
0f7d239c | 2713 | select_frame (fr); |
c906108c | 2714 | } |
c5aa993b | 2715 | |
c906108c SS |
2716 | if (within_current_scope) |
2717 | { | |
2718 | /* We use value_{,free_to_}mark because it could be a | |
2719 | *long* time before we return to the command level and | |
c5aa993b JM |
2720 | call free_all_values. We can't call free_all_values because |
2721 | we might be in the middle of evaluating a function call. */ | |
c906108c | 2722 | |
278cd55f | 2723 | struct value *mark = value_mark (); |
fa4727a6 DJ |
2724 | struct value *new_val; |
2725 | ||
2726 | fetch_watchpoint_value (b->exp, &new_val, NULL, NULL); | |
2727 | if ((b->val != NULL) != (new_val != NULL) | |
2728 | || (b->val != NULL && !value_equal (b->val, new_val))) | |
c906108c | 2729 | { |
fa4727a6 DJ |
2730 | if (new_val != NULL) |
2731 | { | |
2732 | release_value (new_val); | |
2733 | value_free_to_mark (mark); | |
2734 | } | |
c906108c SS |
2735 | bs->old_val = b->val; |
2736 | b->val = new_val; | |
fa4727a6 | 2737 | b->val_valid = 1; |
c906108c SS |
2738 | /* We will stop here */ |
2739 | return WP_VALUE_CHANGED; | |
2740 | } | |
2741 | else | |
2742 | { | |
2743 | /* Nothing changed, don't do anything. */ | |
2744 | value_free_to_mark (mark); | |
2745 | /* We won't stop here */ | |
2746 | return WP_VALUE_NOT_CHANGED; | |
2747 | } | |
2748 | } | |
2749 | else | |
2750 | { | |
2751 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2752 | if we temporarily ignored the watchpoint, then when |
2753 | we reenter the block in which it is valid it contains | |
2754 | garbage (in the case of a function, it may have two | |
2755 | garbage values, one before and one after the prologue). | |
2756 | So we can't even detect the first assignment to it and | |
2757 | watch after that (since the garbage may or may not equal | |
2758 | the first value assigned). */ | |
4ce44c66 JM |
2759 | /* We print all the stop information in print_it_typical(), but |
2760 | in this case, by the time we call print_it_typical() this bp | |
2761 | will be deleted already. So we have no choice but print the | |
2762 | information here. */ | |
9dc5e2a9 | 2763 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2764 | ui_out_field_string |
2765 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 2766 | ui_out_text (uiout, "\nWatchpoint "); |
4f8d1dc6 | 2767 | ui_out_field_int (uiout, "wpnum", b->number); |
8b93c638 JM |
2768 | ui_out_text (uiout, " deleted because the program has left the block in\n\ |
2769 | which its expression is valid.\n"); | |
4ce44c66 | 2770 | |
c906108c | 2771 | if (b->related_breakpoint) |
b5de0fa7 EZ |
2772 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2773 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
2774 | |
2775 | return WP_DELETED; | |
2776 | } | |
2777 | } | |
2778 | ||
18a18393 VP |
2779 | /* Return true if it looks like target has stopped due to hitting |
2780 | breakpoint location BL. This function does not check if we | |
2781 | should stop, only if BL explains the stop. */ | |
2782 | static int | |
2783 | bpstat_check_location (const struct bp_location *bl, CORE_ADDR bp_addr) | |
2784 | { | |
2785 | struct breakpoint *b = bl->owner; | |
2786 | ||
2787 | if (b->type != bp_watchpoint | |
2788 | && b->type != bp_hardware_watchpoint | |
2789 | && b->type != bp_read_watchpoint | |
2790 | && b->type != bp_access_watchpoint | |
2791 | && b->type != bp_hardware_breakpoint | |
2792 | && b->type != bp_catch_fork | |
2793 | && b->type != bp_catch_vfork | |
2794 | && b->type != bp_catch_exec) /* a non-watchpoint bp */ | |
2795 | { | |
2796 | if (bl->address != bp_addr) /* address doesn't match */ | |
2797 | return 0; | |
2798 | if (overlay_debugging /* unmapped overlay section */ | |
2799 | && section_is_overlay (bl->section) | |
2800 | && !section_is_mapped (bl->section)) | |
2801 | return 0; | |
2802 | } | |
2803 | ||
2804 | /* Continuable hardware watchpoints are treated as non-existent if the | |
2805 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
2806 | some data address). Otherwise gdb won't stop on a break instruction | |
2807 | in the code (not from a breakpoint) when a hardware watchpoint has | |
2808 | been defined. Also skip watchpoints which we know did not trigger | |
2809 | (did not match the data address). */ | |
2810 | ||
2811 | if ((b->type == bp_hardware_watchpoint | |
2812 | || b->type == bp_read_watchpoint | |
2813 | || b->type == bp_access_watchpoint) | |
2814 | && b->watchpoint_triggered == watch_triggered_no) | |
2815 | return 0; | |
2816 | ||
2817 | if (b->type == bp_hardware_breakpoint) | |
2818 | { | |
2819 | if (bl->address != bp_addr) | |
2820 | return 0; | |
2821 | if (overlay_debugging /* unmapped overlay section */ | |
2822 | && section_is_overlay (bl->section) | |
2823 | && !section_is_mapped (bl->section)) | |
2824 | return 0; | |
2825 | } | |
2826 | ||
2827 | /* Is this a catchpoint of a load or unload? If so, did we | |
2828 | get a load or unload of the specified library? If not, | |
2829 | ignore it. */ | |
2830 | if ((b->type == bp_catch_load) | |
2831 | #if defined(SOLIB_HAVE_LOAD_EVENT) | |
2832 | && (!SOLIB_HAVE_LOAD_EVENT (PIDGET (inferior_ptid)) | |
2833 | || ((b->dll_pathname != NULL) | |
2834 | && (strcmp (b->dll_pathname, | |
2835 | SOLIB_LOADED_LIBRARY_PATHNAME ( | |
2836 | PIDGET (inferior_ptid))) | |
2837 | != 0))) | |
2838 | #endif | |
2839 | ) | |
2840 | return 0; | |
2841 | ||
2842 | if ((b->type == bp_catch_unload) | |
2843 | #if defined(SOLIB_HAVE_UNLOAD_EVENT) | |
2844 | && (!SOLIB_HAVE_UNLOAD_EVENT (PIDGET (inferior_ptid)) | |
2845 | || ((b->dll_pathname != NULL) | |
2846 | && (strcmp (b->dll_pathname, | |
2847 | SOLIB_UNLOADED_LIBRARY_PATHNAME ( | |
2848 | PIDGET (inferior_ptid))) | |
2849 | != 0))) | |
2850 | #endif | |
2851 | ) | |
2852 | return 0; | |
2853 | ||
2854 | if ((b->type == bp_catch_fork) | |
3a3e9ee3 | 2855 | && !inferior_has_forked (inferior_ptid, |
18a18393 VP |
2856 | &b->forked_inferior_pid)) |
2857 | return 0; | |
2858 | ||
2859 | if ((b->type == bp_catch_vfork) | |
3a3e9ee3 | 2860 | && !inferior_has_vforked (inferior_ptid, |
18a18393 VP |
2861 | &b->forked_inferior_pid)) |
2862 | return 0; | |
2863 | ||
2864 | if ((b->type == bp_catch_exec) | |
3a3e9ee3 | 2865 | && !inferior_has_execd (inferior_ptid, &b->exec_pathname)) |
18a18393 VP |
2866 | return 0; |
2867 | ||
2868 | return 1; | |
2869 | } | |
2870 | ||
2871 | /* If BS refers to a watchpoint, determine if the watched values | |
2872 | has actually changed, and we should stop. If not, set BS->stop | |
2873 | to 0. */ | |
2874 | static void | |
2875 | bpstat_check_watchpoint (bpstat bs) | |
2876 | { | |
2877 | const struct bp_location *bl = bs->breakpoint_at; | |
2878 | struct breakpoint *b = bl->owner; | |
2879 | ||
2880 | if (b->type == bp_watchpoint | |
2881 | || b->type == bp_read_watchpoint | |
2882 | || b->type == bp_access_watchpoint | |
2883 | || b->type == bp_hardware_watchpoint) | |
2884 | { | |
2885 | CORE_ADDR addr; | |
2886 | struct value *v; | |
2887 | int must_check_value = 0; | |
2888 | ||
2889 | if (b->type == bp_watchpoint) | |
2890 | /* For a software watchpoint, we must always check the | |
2891 | watched value. */ | |
2892 | must_check_value = 1; | |
2893 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
2894 | /* We have a hardware watchpoint (read, write, or access) | |
2895 | and the target earlier reported an address watched by | |
2896 | this watchpoint. */ | |
2897 | must_check_value = 1; | |
2898 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
2899 | && b->type == bp_hardware_watchpoint) | |
2900 | /* We were stopped by a hardware watchpoint, but the target could | |
2901 | not report the data address. We must check the watchpoint's | |
2902 | value. Access and read watchpoints are out of luck; without | |
2903 | a data address, we can't figure it out. */ | |
2904 | must_check_value = 1; | |
2905 | ||
2906 | if (must_check_value) | |
2907 | { | |
2908 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
2909 | b->number); | |
2910 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2911 | int e = catch_errors (watchpoint_check, bs, message, | |
2912 | RETURN_MASK_ALL); | |
2913 | do_cleanups (cleanups); | |
2914 | switch (e) | |
2915 | { | |
2916 | case WP_DELETED: | |
2917 | /* We've already printed what needs to be printed. */ | |
2918 | bs->print_it = print_it_done; | |
2919 | /* Stop. */ | |
2920 | break; | |
2921 | case WP_VALUE_CHANGED: | |
2922 | if (b->type == bp_read_watchpoint) | |
2923 | { | |
2924 | /* Don't stop: read watchpoints shouldn't fire if | |
2925 | the value has changed. This is for targets | |
2926 | which cannot set read-only watchpoints. */ | |
2927 | bs->print_it = print_it_noop; | |
2928 | bs->stop = 0; | |
2929 | } | |
2930 | break; | |
2931 | case WP_VALUE_NOT_CHANGED: | |
2932 | if (b->type == bp_hardware_watchpoint | |
2933 | || b->type == bp_watchpoint) | |
2934 | { | |
2935 | /* Don't stop: write watchpoints shouldn't fire if | |
2936 | the value hasn't changed. */ | |
2937 | bs->print_it = print_it_noop; | |
2938 | bs->stop = 0; | |
2939 | } | |
2940 | /* Stop. */ | |
2941 | break; | |
2942 | default: | |
2943 | /* Can't happen. */ | |
2944 | case 0: | |
2945 | /* Error from catch_errors. */ | |
2946 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); | |
2947 | if (b->related_breakpoint) | |
2948 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
2949 | b->disposition = disp_del_at_next_stop; | |
2950 | /* We've already printed what needs to be printed. */ | |
2951 | bs->print_it = print_it_done; | |
2952 | break; | |
2953 | } | |
2954 | } | |
2955 | else /* must_check_value == 0 */ | |
2956 | { | |
2957 | /* This is a case where some watchpoint(s) triggered, but | |
2958 | not at the address of this watchpoint, or else no | |
2959 | watchpoint triggered after all. So don't print | |
2960 | anything for this watchpoint. */ | |
2961 | bs->print_it = print_it_noop; | |
2962 | bs->stop = 0; | |
2963 | } | |
2964 | } | |
2965 | } | |
2966 | ||
2967 | ||
2968 | /* Check conditions (condition proper, frame, thread and ignore count) | |
2969 | of breakpoint referred to by BS. If we should not stop for this | |
2970 | breakpoint, set BS->stop to 0. */ | |
2971 | static void | |
2972 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
2973 | { | |
2974 | int thread_id = pid_to_thread_id (ptid); | |
2975 | const struct bp_location *bl = bs->breakpoint_at; | |
2976 | struct breakpoint *b = bl->owner; | |
2977 | ||
2978 | if (frame_id_p (b->frame_id) | |
2979 | && !frame_id_eq (b->frame_id, get_frame_id (get_current_frame ()))) | |
2980 | bs->stop = 0; | |
2981 | else if (bs->stop) | |
2982 | { | |
2983 | int value_is_zero = 0; | |
2984 | ||
2985 | /* If this is a scope breakpoint, mark the associated | |
2986 | watchpoint as triggered so that we will handle the | |
2987 | out-of-scope event. We'll get to the watchpoint next | |
2988 | iteration. */ | |
2989 | if (b->type == bp_watchpoint_scope) | |
2990 | b->related_breakpoint->watchpoint_triggered = watch_triggered_yes; | |
2991 | ||
2992 | if (bl->cond && bl->owner->disposition != disp_del_at_next_stop) | |
2993 | { | |
2994 | /* Need to select the frame, with all that implies | |
2995 | so that the conditions will have the right context. */ | |
2996 | select_frame (get_current_frame ()); | |
2997 | value_is_zero | |
2998 | = catch_errors (breakpoint_cond_eval, (bl->cond), | |
2999 | "Error in testing breakpoint condition:\n", | |
3000 | RETURN_MASK_ALL); | |
3001 | /* FIXME-someday, should give breakpoint # */ | |
3002 | free_all_values (); | |
3003 | } | |
3004 | if (bl->cond && value_is_zero) | |
3005 | { | |
3006 | bs->stop = 0; | |
3007 | } | |
3008 | else if (b->thread != -1 && b->thread != thread_id) | |
3009 | { | |
3010 | bs->stop = 0; | |
3011 | } | |
3012 | else if (b->ignore_count > 0) | |
3013 | { | |
3014 | b->ignore_count--; | |
3015 | annotate_ignore_count_change (); | |
3016 | bs->stop = 0; | |
3017 | /* Increase the hit count even though we don't | |
3018 | stop. */ | |
3019 | ++(b->hit_count); | |
3020 | } | |
3021 | } | |
3022 | } | |
3023 | ||
3024 | ||
9709f61c | 3025 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 3026 | BP_ADDR in thread PTID. |
c906108c | 3027 | |
d983da9c | 3028 | Determine whether we stopped at a breakpoint, etc, or whether we |
c906108c SS |
3029 | don't understand this stop. Result is a chain of bpstat's such that: |
3030 | ||
c5aa993b | 3031 | if we don't understand the stop, the result is a null pointer. |
c906108c | 3032 | |
c5aa993b | 3033 | if we understand why we stopped, the result is not null. |
c906108c | 3034 | |
c5aa993b JM |
3035 | Each element of the chain refers to a particular breakpoint or |
3036 | watchpoint at which we have stopped. (We may have stopped for | |
3037 | several reasons concurrently.) | |
c906108c | 3038 | |
c5aa993b JM |
3039 | Each element of the chain has valid next, breakpoint_at, |
3040 | commands, FIXME??? fields. */ | |
c906108c SS |
3041 | |
3042 | bpstat | |
d983da9c | 3043 | bpstat_stop_status (CORE_ADDR bp_addr, ptid_t ptid) |
c906108c | 3044 | { |
0d381245 | 3045 | struct breakpoint *b = NULL; |
89f9893c | 3046 | const struct bp_location *bl; |
20874c92 | 3047 | struct bp_location *loc; |
c906108c SS |
3048 | /* Root of the chain of bpstat's */ |
3049 | struct bpstats root_bs[1]; | |
3050 | /* Pointer to the last thing in the chain currently. */ | |
3051 | bpstat bs = root_bs; | |
20874c92 | 3052 | int ix; |
d832cb68 | 3053 | int need_remove_insert; |
c906108c | 3054 | |
0d381245 | 3055 | ALL_BP_LOCATIONS (bl) |
c5aa993b | 3056 | { |
0d381245 VP |
3057 | b = bl->owner; |
3058 | gdb_assert (b); | |
468d015d | 3059 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) |
c5aa993b JM |
3060 | continue; |
3061 | ||
a5606eee VP |
3062 | /* For hardware watchpoints, we look only at the first location. |
3063 | The watchpoint_check function will work on entire expression, | |
3064 | not the individual locations. For read watchopints, the | |
3065 | watchpoints_triggered function have checked all locations | |
3066 | alrea | |
3067 | */ | |
3068 | if (b->type == bp_hardware_watchpoint && bl != b->loc) | |
3069 | continue; | |
3070 | ||
18a18393 VP |
3071 | if (!bpstat_check_location (bl, bp_addr)) |
3072 | continue; | |
3073 | ||
c5aa993b JM |
3074 | /* Come here if it's a watchpoint, or if the break address matches */ |
3075 | ||
0d381245 | 3076 | bs = bpstat_alloc (bl, bs); /* Alloc a bpstat to explain stop */ |
c5aa993b | 3077 | |
18a18393 VP |
3078 | /* Assume we stop. Should we find watchpoint that is not actually |
3079 | triggered, or if condition of breakpoint is false, we'll reset | |
3080 | 'stop' to 0. */ | |
c5aa993b JM |
3081 | bs->stop = 1; |
3082 | bs->print = 1; | |
3083 | ||
18a18393 VP |
3084 | bpstat_check_watchpoint (bs); |
3085 | if (!bs->stop) | |
3086 | continue; | |
c5aa993b | 3087 | |
18a18393 VP |
3088 | if (b->type == bp_thread_event || b->type == bp_overlay_event) |
3089 | /* We do not stop for these. */ | |
c5aa993b JM |
3090 | bs->stop = 0; |
3091 | else | |
18a18393 VP |
3092 | bpstat_check_breakpoint_conditions (bs, ptid); |
3093 | ||
3094 | if (bs->stop) | |
c5aa993b | 3095 | { |
18a18393 | 3096 | ++(b->hit_count); |
d983da9c | 3097 | |
18a18393 VP |
3098 | /* We will stop here */ |
3099 | if (b->disposition == disp_disable) | |
c5aa993b | 3100 | { |
514f746b AR |
3101 | if (b->enable_state != bp_permanent) |
3102 | b->enable_state = bp_disabled; | |
b60e7edf | 3103 | update_global_location_list (0); |
c5aa993b | 3104 | } |
18a18393 VP |
3105 | if (b->silent) |
3106 | bs->print = 0; | |
3107 | bs->commands = b->commands; | |
3108 | if (bs->commands && | |
3109 | (strcmp ("silent", bs->commands->line) == 0 | |
3110 | || (xdb_commands && strcmp ("Q", bs->commands->line) == 0))) | |
c5aa993b | 3111 | { |
18a18393 VP |
3112 | bs->commands = bs->commands->next; |
3113 | bs->print = 0; | |
c5aa993b | 3114 | } |
18a18393 | 3115 | bs->commands = copy_command_lines (bs->commands); |
c5aa993b | 3116 | } |
18a18393 | 3117 | |
c5aa993b JM |
3118 | /* Print nothing for this entry if we dont stop or if we dont print. */ |
3119 | if (bs->stop == 0 || bs->print == 0) | |
3120 | bs->print_it = print_it_noop; | |
3121 | } | |
c906108c | 3122 | |
20874c92 VP |
3123 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) |
3124 | { | |
3125 | if (loc->address == bp_addr) | |
3126 | { | |
3127 | bs = bpstat_alloc (loc, bs); | |
3128 | /* For hits of moribund locations, we should just proceed. */ | |
3129 | bs->stop = 0; | |
3130 | bs->print = 0; | |
3131 | bs->print_it = print_it_noop; | |
3132 | } | |
3133 | } | |
3134 | ||
c906108c SS |
3135 | bs->next = NULL; /* Terminate the chain */ |
3136 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
3137 | ||
d983da9c DJ |
3138 | /* If we aren't stopping, the value of some hardware watchpoint may |
3139 | not have changed, but the intermediate memory locations we are | |
3140 | watching may have. Don't bother if we're stopping; this will get | |
3141 | done later. */ | |
3142 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3143 | if (bs->stop) | |
3144 | break; | |
3145 | ||
d832cb68 | 3146 | need_remove_insert = 0; |
d983da9c DJ |
3147 | if (bs == NULL) |
3148 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3149 | if (!bs->stop | |
20874c92 | 3150 | && bs->breakpoint_at->owner |
d983da9c DJ |
3151 | && (bs->breakpoint_at->owner->type == bp_hardware_watchpoint |
3152 | || bs->breakpoint_at->owner->type == bp_read_watchpoint | |
3153 | || bs->breakpoint_at->owner->type == bp_access_watchpoint)) | |
3154 | { | |
a5606eee VP |
3155 | /* remove/insert can invalidate bs->breakpoint_at, if this |
3156 | location is no longer used by the watchpoint. Prevent | |
3157 | further code from trying to use it. */ | |
3158 | bs->breakpoint_at = NULL; | |
d832cb68 | 3159 | need_remove_insert = 1; |
d983da9c DJ |
3160 | } |
3161 | ||
d832cb68 DD |
3162 | if (need_remove_insert) |
3163 | { | |
3164 | remove_breakpoints (); | |
3165 | insert_breakpoints (); | |
3166 | } | |
3167 | ||
d983da9c | 3168 | return root_bs->next; |
c906108c SS |
3169 | } |
3170 | \f | |
3171 | /* Tell what to do about this bpstat. */ | |
3172 | struct bpstat_what | |
fba45db2 | 3173 | bpstat_what (bpstat bs) |
c906108c SS |
3174 | { |
3175 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
3176 | enum class |
3177 | { | |
3178 | /* This bpstat element has no effect on the main_action. */ | |
3179 | no_effect = 0, | |
3180 | ||
3181 | /* There was a watchpoint, stop but don't print. */ | |
3182 | wp_silent, | |
c906108c | 3183 | |
c5aa993b JM |
3184 | /* There was a watchpoint, stop and print. */ |
3185 | wp_noisy, | |
c906108c | 3186 | |
c5aa993b JM |
3187 | /* There was a breakpoint but we're not stopping. */ |
3188 | bp_nostop, | |
c906108c | 3189 | |
c5aa993b JM |
3190 | /* There was a breakpoint, stop but don't print. */ |
3191 | bp_silent, | |
c906108c | 3192 | |
c5aa993b JM |
3193 | /* There was a breakpoint, stop and print. */ |
3194 | bp_noisy, | |
c906108c | 3195 | |
c5aa993b JM |
3196 | /* We hit the longjmp breakpoint. */ |
3197 | long_jump, | |
c906108c | 3198 | |
c5aa993b JM |
3199 | /* We hit the longjmp_resume breakpoint. */ |
3200 | long_resume, | |
c906108c | 3201 | |
c5aa993b JM |
3202 | /* We hit the step_resume breakpoint. */ |
3203 | step_resume, | |
c906108c | 3204 | |
c5aa993b JM |
3205 | /* We hit the shared library event breakpoint. */ |
3206 | shlib_event, | |
c906108c | 3207 | |
c5aa993b JM |
3208 | /* We caught a shared library event. */ |
3209 | catch_shlib_event, | |
c906108c | 3210 | |
c5aa993b JM |
3211 | /* This is just used to count how many enums there are. */ |
3212 | class_last | |
c906108c SS |
3213 | }; |
3214 | ||
3215 | /* Here is the table which drives this routine. So that we can | |
3216 | format it pretty, we define some abbreviations for the | |
3217 | enum bpstat_what codes. */ | |
3218 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
3219 | #define ss BPSTAT_WHAT_STOP_SILENT | |
3220 | #define sn BPSTAT_WHAT_STOP_NOISY | |
3221 | #define sgl BPSTAT_WHAT_SINGLE | |
3222 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
3223 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
c906108c | 3224 | #define sr BPSTAT_WHAT_STEP_RESUME |
c906108c SS |
3225 | #define shl BPSTAT_WHAT_CHECK_SHLIBS |
3226 | #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK | |
3227 | ||
3228 | /* "Can't happen." Might want to print an error message. | |
3229 | abort() is not out of the question, but chances are GDB is just | |
3230 | a bit confused, not unusable. */ | |
3231 | #define err BPSTAT_WHAT_STOP_NOISY | |
3232 | ||
3233 | /* Given an old action and a class, come up with a new action. */ | |
3234 | /* One interesting property of this table is that wp_silent is the same | |
3235 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
3236 | after stopping, the check for whether to step over a breakpoint | |
3237 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
3238 | reference to how we stopped. We retain separate wp_silent and |
3239 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
3240 | |
3241 | Another possibly interesting property of this table is that | |
3242 | there's a partial ordering, priority-like, of the actions. Once | |
3243 | you've decided that some action is appropriate, you'll never go | |
3244 | back and decide something of a lower priority is better. The | |
3245 | ordering is: | |
3246 | ||
4d5b2cd7 | 3247 | kc < clr sgl shl shlr slr sn sr ss |
78b6a731 | 3248 | sgl < shl shlr slr sn sr ss |
4d5b2cd7 | 3249 | slr < err shl shlr sn sr ss |
78b6a731 | 3250 | clr < err shl shlr sn sr ss |
4d5b2cd7 DJ |
3251 | ss < shl shlr sn sr |
3252 | sn < shl shlr sr | |
46d57086 DJ |
3253 | shl < shlr sr |
3254 | shlr < sr | |
4d5b2cd7 | 3255 | sr < |
c5aa993b | 3256 | |
43ff13b4 JM |
3257 | What I think this means is that we don't need a damned table |
3258 | here. If you just put the rows and columns in the right order, | |
3259 | it'd look awfully regular. We could simply walk the bpstat list | |
3260 | and choose the highest priority action we find, with a little | |
78b6a731 | 3261 | logic to handle the 'err' cases. */ |
c906108c SS |
3262 | |
3263 | /* step_resume entries: a step resume breakpoint overrides another | |
3264 | breakpoint of signal handling (see comment in wait_for_inferior | |
fcf70625 | 3265 | at where we set the step_resume breakpoint). */ |
c906108c SS |
3266 | |
3267 | static const enum bpstat_what_main_action | |
c5aa993b JM |
3268 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
3269 | { | |
3270 | /* old action */ | |
78b6a731 | 3271 | /* kc ss sn sgl slr clr sr shl shlr |
c5aa993b JM |
3272 | */ |
3273 | /*no_effect */ | |
78b6a731 | 3274 | {kc, ss, sn, sgl, slr, clr, sr, shl, shlr}, |
c5aa993b | 3275 | /*wp_silent */ |
78b6a731 | 3276 | {ss, ss, sn, ss, ss, ss, sr, shl, shlr}, |
c5aa993b | 3277 | /*wp_noisy */ |
78b6a731 | 3278 | {sn, sn, sn, sn, sn, sn, sr, shl, shlr}, |
c5aa993b | 3279 | /*bp_nostop */ |
78b6a731 | 3280 | {sgl, ss, sn, sgl, slr, slr, sr, shl, shlr}, |
c5aa993b | 3281 | /*bp_silent */ |
78b6a731 | 3282 | {ss, ss, sn, ss, ss, ss, sr, shl, shlr}, |
c5aa993b | 3283 | /*bp_noisy */ |
78b6a731 | 3284 | {sn, sn, sn, sn, sn, sn, sr, shl, shlr}, |
c5aa993b | 3285 | /*long_jump */ |
78b6a731 | 3286 | {slr, ss, sn, slr, slr, err, sr, shl, shlr}, |
c5aa993b | 3287 | /*long_resume */ |
78b6a731 | 3288 | {clr, ss, sn, err, err, err, sr, shl, shlr}, |
c5aa993b | 3289 | /*step_resume */ |
78b6a731 | 3290 | {sr, sr, sr, sr, sr, sr, sr, sr, sr}, |
c5aa993b | 3291 | /*shlib */ |
78b6a731 | 3292 | {shl, shl, shl, shl, shl, shl, sr, shl, shlr}, |
c5aa993b | 3293 | /*catch_shlib */ |
78b6a731 | 3294 | {shlr, shlr, shlr, shlr, shlr, shlr, sr, shlr, shlr} |
c5aa993b | 3295 | }; |
c906108c SS |
3296 | |
3297 | #undef kc | |
3298 | #undef ss | |
3299 | #undef sn | |
3300 | #undef sgl | |
3301 | #undef slr | |
3302 | #undef clr | |
c906108c SS |
3303 | #undef err |
3304 | #undef sr | |
3305 | #undef ts | |
3306 | #undef shl | |
3307 | #undef shlr | |
3308 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; | |
3309 | struct bpstat_what retval; | |
3310 | ||
3311 | retval.call_dummy = 0; | |
3312 | for (; bs != NULL; bs = bs->next) | |
3313 | { | |
3314 | enum class bs_class = no_effect; | |
3315 | if (bs->breakpoint_at == NULL) | |
3316 | /* I suspect this can happen if it was a momentary breakpoint | |
3317 | which has since been deleted. */ | |
3318 | continue; | |
20874c92 VP |
3319 | if (bs->breakpoint_at->owner == NULL) |
3320 | bs_class = bp_nostop; | |
3321 | else | |
4f8d1dc6 | 3322 | switch (bs->breakpoint_at->owner->type) |
c906108c SS |
3323 | { |
3324 | case bp_none: | |
3325 | continue; | |
3326 | ||
3327 | case bp_breakpoint: | |
3328 | case bp_hardware_breakpoint: | |
3329 | case bp_until: | |
3330 | case bp_finish: | |
3331 | if (bs->stop) | |
3332 | { | |
3333 | if (bs->print) | |
3334 | bs_class = bp_noisy; | |
3335 | else | |
3336 | bs_class = bp_silent; | |
3337 | } | |
3338 | else | |
3339 | bs_class = bp_nostop; | |
3340 | break; | |
3341 | case bp_watchpoint: | |
3342 | case bp_hardware_watchpoint: | |
3343 | case bp_read_watchpoint: | |
3344 | case bp_access_watchpoint: | |
3345 | if (bs->stop) | |
3346 | { | |
3347 | if (bs->print) | |
3348 | bs_class = wp_noisy; | |
3349 | else | |
3350 | bs_class = wp_silent; | |
3351 | } | |
3352 | else | |
53a5351d JM |
3353 | /* There was a watchpoint, but we're not stopping. |
3354 | This requires no further action. */ | |
c906108c SS |
3355 | bs_class = no_effect; |
3356 | break; | |
3357 | case bp_longjmp: | |
3358 | bs_class = long_jump; | |
3359 | break; | |
3360 | case bp_longjmp_resume: | |
3361 | bs_class = long_resume; | |
3362 | break; | |
3363 | case bp_step_resume: | |
3364 | if (bs->stop) | |
3365 | { | |
3366 | bs_class = step_resume; | |
3367 | } | |
3368 | else | |
3369 | /* It is for the wrong frame. */ | |
3370 | bs_class = bp_nostop; | |
3371 | break; | |
c906108c SS |
3372 | case bp_watchpoint_scope: |
3373 | bs_class = bp_nostop; | |
3374 | break; | |
c5aa993b JM |
3375 | case bp_shlib_event: |
3376 | bs_class = shlib_event; | |
3377 | break; | |
c4093a6a | 3378 | case bp_thread_event: |
1900040c | 3379 | case bp_overlay_event: |
c4093a6a JM |
3380 | bs_class = bp_nostop; |
3381 | break; | |
c5aa993b JM |
3382 | case bp_catch_load: |
3383 | case bp_catch_unload: | |
3384 | /* Only if this catchpoint triggered should we cause the | |
3385 | step-out-of-dld behaviour. Otherwise, we ignore this | |
3386 | catchpoint. */ | |
3387 | if (bs->stop) | |
3388 | bs_class = catch_shlib_event; | |
3389 | else | |
3390 | bs_class = no_effect; | |
3391 | break; | |
3392 | case bp_catch_fork: | |
3393 | case bp_catch_vfork: | |
3394 | case bp_catch_exec: | |
3395 | if (bs->stop) | |
3396 | { | |
3397 | if (bs->print) | |
3398 | bs_class = bp_noisy; | |
3399 | else | |
3400 | bs_class = bp_silent; | |
3401 | } | |
3402 | else | |
53a5351d JM |
3403 | /* There was a catchpoint, but we're not stopping. |
3404 | This requires no further action. */ | |
c5aa993b JM |
3405 | bs_class = no_effect; |
3406 | break; | |
c906108c | 3407 | case bp_call_dummy: |
53a5351d JM |
3408 | /* Make sure the action is stop (silent or noisy), |
3409 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
3410 | bs_class = bp_silent; |
3411 | retval.call_dummy = 1; | |
3412 | break; | |
3413 | } | |
c5aa993b | 3414 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
3415 | } |
3416 | retval.main_action = current_action; | |
3417 | return retval; | |
3418 | } | |
3419 | ||
3420 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
3421 | without hardware support). This isn't related to a specific bpstat, | |
3422 | just to things like whether watchpoints are set. */ | |
3423 | ||
c5aa993b | 3424 | int |
fba45db2 | 3425 | bpstat_should_step (void) |
c906108c SS |
3426 | { |
3427 | struct breakpoint *b; | |
3428 | ALL_BREAKPOINTS (b) | |
468d015d | 3429 | if (breakpoint_enabled (b) && b->type == bp_watchpoint) |
3172dc30 | 3430 | return 1; |
c906108c SS |
3431 | return 0; |
3432 | } | |
3433 | ||
c906108c | 3434 | \f |
c5aa993b | 3435 | |
c906108c SS |
3436 | /* Given a bpstat that records zero or more triggered eventpoints, this |
3437 | function returns another bpstat which contains only the catchpoints | |
3438 | on that first list, if any. */ | |
3439 | void | |
fba45db2 | 3440 | bpstat_get_triggered_catchpoints (bpstat ep_list, bpstat *cp_list) |
c5aa993b JM |
3441 | { |
3442 | struct bpstats root_bs[1]; | |
3443 | bpstat bs = root_bs; | |
3444 | struct breakpoint *ep; | |
3445 | char *dll_pathname; | |
3446 | ||
c906108c SS |
3447 | bpstat_clear (cp_list); |
3448 | root_bs->next = NULL; | |
c5aa993b JM |
3449 | |
3450 | for (; ep_list != NULL; ep_list = ep_list->next) | |
c906108c SS |
3451 | { |
3452 | /* Is this eventpoint a catchpoint? If not, ignore it. */ | |
4f8d1dc6 | 3453 | ep = ep_list->breakpoint_at->owner; |
c906108c | 3454 | if (ep == NULL) |
c5aa993b JM |
3455 | break; |
3456 | if ((ep->type != bp_catch_load) && | |
dfdfb3ca | 3457 | (ep->type != bp_catch_unload)) |
53a5351d | 3458 | /* pai: (temp) ADD fork/vfork here!! */ |
c5aa993b JM |
3459 | continue; |
3460 | ||
c906108c | 3461 | /* Yes; add it to the list. */ |
4f8d1dc6 | 3462 | bs = bpstat_alloc (ep_list->breakpoint_at, bs); |
c906108c SS |
3463 | *bs = *ep_list; |
3464 | bs->next = NULL; | |
3465 | bs = root_bs->next; | |
c5aa993b | 3466 | |
c906108c SS |
3467 | #if defined(SOLIB_ADD) |
3468 | /* Also, for each triggered catchpoint, tag it with the name of | |
3469 | the library that caused this trigger. (We copy the name now, | |
3470 | because it's only guaranteed to be available NOW, when the | |
3471 | catchpoint triggers. Clients who may wish to know the name | |
3472 | later must get it from the catchpoint itself.) */ | |
3473 | if (ep->triggered_dll_pathname != NULL) | |
b8c9b27d | 3474 | xfree (ep->triggered_dll_pathname); |
c906108c | 3475 | if (ep->type == bp_catch_load) |
39f77062 KB |
3476 | dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME ( |
3477 | PIDGET (inferior_ptid)); | |
c906108c | 3478 | else |
39f77062 KB |
3479 | dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
3480 | PIDGET (inferior_ptid)); | |
c906108c SS |
3481 | #else |
3482 | dll_pathname = NULL; | |
3483 | #endif | |
3484 | if (dll_pathname) | |
3485 | { | |
53a5351d JM |
3486 | ep->triggered_dll_pathname = (char *) |
3487 | xmalloc (strlen (dll_pathname) + 1); | |
c906108c SS |
3488 | strcpy (ep->triggered_dll_pathname, dll_pathname); |
3489 | } | |
3490 | else | |
3491 | ep->triggered_dll_pathname = NULL; | |
3492 | } | |
c5aa993b | 3493 | |
c906108c SS |
3494 | *cp_list = bs; |
3495 | } | |
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"}, |
c5aa993b JM |
3572 | {bp_catch_load, "catch load"}, |
3573 | {bp_catch_unload, "catch unload"}, | |
3574 | {bp_catch_fork, "catch fork"}, | |
3575 | {bp_catch_vfork, "catch vfork"}, | |
dfdfb3ca | 3576 | {bp_catch_exec, "catch exec"} |
c5aa993b | 3577 | }; |
c4093a6a | 3578 | |
c2c6d25f | 3579 | static char bpenables[] = "nynny"; |
c906108c | 3580 | char wrap_indent[80]; |
8b93c638 JM |
3581 | struct ui_stream *stb = ui_out_stream_new (uiout); |
3582 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 3583 | struct cleanup *bkpt_chain; |
c906108c | 3584 | |
0d381245 VP |
3585 | int header_of_multiple = 0; |
3586 | int part_of_multiple = (loc != NULL); | |
3587 | ||
3588 | gdb_assert (!loc || loc_number != 0); | |
3589 | /* See comment in print_one_breakpoint concerning | |
3590 | treatment of breakpoints with single disabled | |
3591 | location. */ | |
3592 | if (loc == NULL | |
3593 | && (b->loc != NULL | |
3594 | && (b->loc->next != NULL || !b->loc->enabled))) | |
3595 | header_of_multiple = 1; | |
3596 | if (loc == NULL) | |
3597 | loc = b->loc; | |
3598 | ||
c4093a6a | 3599 | annotate_record (); |
3b31d625 | 3600 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
3601 | |
3602 | /* 1 */ | |
3603 | annotate_field (0); | |
0d381245 VP |
3604 | if (part_of_multiple) |
3605 | { | |
3606 | char *formatted; | |
0c6773c1 | 3607 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
3608 | ui_out_field_string (uiout, "number", formatted); |
3609 | xfree (formatted); | |
3610 | } | |
3611 | else | |
3612 | { | |
3613 | ui_out_field_int (uiout, "number", b->number); | |
3614 | } | |
c4093a6a JM |
3615 | |
3616 | /* 2 */ | |
3617 | annotate_field (1); | |
0d381245 VP |
3618 | if (part_of_multiple) |
3619 | ui_out_field_skip (uiout, "type"); | |
3620 | else | |
3621 | { | |
3622 | if (((int) b->type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3623 | || ((int) b->type != bptypes[(int) b->type].type)) | |
3624 | internal_error (__FILE__, __LINE__, | |
3625 | _("bptypes table does not describe type #%d."), | |
3626 | (int) b->type); | |
3627 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); | |
3628 | } | |
c4093a6a JM |
3629 | |
3630 | /* 3 */ | |
3631 | annotate_field (2); | |
0d381245 VP |
3632 | if (part_of_multiple) |
3633 | ui_out_field_skip (uiout, "disp"); | |
3634 | else | |
2cec12e5 | 3635 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 3636 | |
c4093a6a JM |
3637 | |
3638 | /* 4 */ | |
3639 | annotate_field (3); | |
0d381245 | 3640 | if (part_of_multiple) |
54e52265 | 3641 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 3642 | else |
54e52265 VP |
3643 | ui_out_field_fmt (uiout, "enabled", "%c", |
3644 | bpenables[(int) b->enable_state]); | |
3645 | ui_out_spaces (uiout, 2); | |
0d381245 | 3646 | |
c4093a6a JM |
3647 | |
3648 | /* 5 and 6 */ | |
3649 | strcpy (wrap_indent, " "); | |
3650 | if (addressprint) | |
75ac9d7b | 3651 | { |
17a912b6 | 3652 | if (gdbarch_addr_bit (current_gdbarch) <= 32) |
75ac9d7b MS |
3653 | strcat (wrap_indent, " "); |
3654 | else | |
3655 | strcat (wrap_indent, " "); | |
3656 | } | |
c906108c | 3657 | |
3086aeae | 3658 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 VP |
3659 | { |
3660 | /* Although the print_one can possibly print | |
3661 | all locations, calling it here is not likely | |
3662 | to get any nice result. So, make sure there's | |
3663 | just one location. */ | |
3664 | gdb_assert (b->loc == NULL || b->loc->next == NULL); | |
3665 | b->ops->print_one (b, last_addr); | |
3666 | } | |
3086aeae DJ |
3667 | else |
3668 | switch (b->type) | |
3669 | { | |
3670 | case bp_none: | |
3671 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 3672 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 3673 | break; |
c906108c | 3674 | |
3086aeae DJ |
3675 | case bp_watchpoint: |
3676 | case bp_hardware_watchpoint: | |
3677 | case bp_read_watchpoint: | |
3678 | case bp_access_watchpoint: | |
3679 | /* Field 4, the address, is omitted (which makes the columns | |
3680 | not line up too nicely with the headers, but the effect | |
3681 | is relatively readable). */ | |
3682 | if (addressprint) | |
3683 | ui_out_field_skip (uiout, "addr"); | |
3684 | annotate_field (5); | |
3685 | print_expression (b->exp, stb->stream); | |
3686 | ui_out_field_stream (uiout, "what", stb); | |
3687 | break; | |
3688 | ||
3689 | case bp_catch_load: | |
3690 | case bp_catch_unload: | |
3691 | /* Field 4, the address, is omitted (which makes the columns | |
3692 | not line up too nicely with the headers, but the effect | |
3693 | is relatively readable). */ | |
3694 | if (addressprint) | |
3695 | ui_out_field_skip (uiout, "addr"); | |
3696 | annotate_field (5); | |
3697 | if (b->dll_pathname == NULL) | |
3698 | { | |
3699 | ui_out_field_string (uiout, "what", "<any library>"); | |
3700 | ui_out_spaces (uiout, 1); | |
3701 | } | |
3702 | else | |
3703 | { | |
3704 | ui_out_text (uiout, "library \""); | |
3705 | ui_out_field_string (uiout, "what", b->dll_pathname); | |
3706 | ui_out_text (uiout, "\" "); | |
3707 | } | |
3708 | break; | |
3709 | ||
3710 | case bp_catch_fork: | |
3711 | case bp_catch_vfork: | |
3712 | /* Field 4, the address, is omitted (which makes the columns | |
3713 | not line up too nicely with the headers, but the effect | |
3714 | is relatively readable). */ | |
3715 | if (addressprint) | |
3716 | ui_out_field_skip (uiout, "addr"); | |
3717 | annotate_field (5); | |
3a3e9ee3 | 3718 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) |
3086aeae DJ |
3719 | { |
3720 | ui_out_text (uiout, "process "); | |
3a3e9ee3 PA |
3721 | ui_out_field_int (uiout, "what", |
3722 | ptid_get_pid (b->forked_inferior_pid)); | |
3086aeae DJ |
3723 | ui_out_spaces (uiout, 1); |
3724 | } | |
0f699bbe | 3725 | break; |
3086aeae DJ |
3726 | |
3727 | case bp_catch_exec: | |
3728 | /* Field 4, the address, is omitted (which makes the columns | |
3729 | not line up too nicely with the headers, but the effect | |
3730 | is relatively readable). */ | |
3731 | if (addressprint) | |
3732 | ui_out_field_skip (uiout, "addr"); | |
3733 | annotate_field (5); | |
3734 | if (b->exec_pathname != NULL) | |
3735 | { | |
3736 | ui_out_text (uiout, "program \""); | |
3737 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
3738 | ui_out_text (uiout, "\" "); | |
3739 | } | |
3740 | break; | |
3741 | ||
3086aeae DJ |
3742 | case bp_breakpoint: |
3743 | case bp_hardware_breakpoint: | |
3744 | case bp_until: | |
3745 | case bp_finish: | |
3746 | case bp_longjmp: | |
3747 | case bp_longjmp_resume: | |
3748 | case bp_step_resume: | |
3086aeae DJ |
3749 | case bp_watchpoint_scope: |
3750 | case bp_call_dummy: | |
3751 | case bp_shlib_event: | |
3752 | case bp_thread_event: | |
3753 | case bp_overlay_event: | |
3754 | if (addressprint) | |
3755 | { | |
3756 | annotate_field (4); | |
54e52265 | 3757 | if (header_of_multiple) |
0d381245 | 3758 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 3759 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 3760 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 3761 | else |
0d381245 | 3762 | ui_out_field_core_addr (uiout, "addr", loc->address); |
3086aeae DJ |
3763 | } |
3764 | annotate_field (5); | |
0d381245 VP |
3765 | if (!header_of_multiple) |
3766 | print_breakpoint_location (b, loc, wrap_indent, stb); | |
3767 | if (b->loc) | |
3768 | *last_addr = b->loc->address; | |
3086aeae DJ |
3769 | break; |
3770 | } | |
c906108c | 3771 | |
0d381245 | 3772 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 3773 | { |
8b93c638 JM |
3774 | /* FIXME: This seems to be redundant and lost here; see the |
3775 | "stop only in" line a little further down. */ | |
3776 | ui_out_text (uiout, " thread "); | |
3777 | ui_out_field_int (uiout, "thread", b->thread); | |
c4093a6a JM |
3778 | } |
3779 | ||
8b93c638 | 3780 | ui_out_text (uiout, "\n"); |
c4093a6a | 3781 | |
0d381245 | 3782 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
3783 | { |
3784 | annotate_field (6); | |
8b93c638 | 3785 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
3786 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
3787 | the frame ID. */ | |
d0a55772 | 3788 | ui_out_field_core_addr (uiout, "frame", b->frame_id.stack_addr); |
8b93c638 | 3789 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
3790 | } |
3791 | ||
0d381245 | 3792 | if (!part_of_multiple && b->cond_string && !ada_exception_catchpoint_p (b)) |
c4093a6a | 3793 | { |
f7f9143b JB |
3794 | /* We do not print the condition for Ada exception catchpoints |
3795 | because the condition is an internal implementation detail | |
3796 | that we do not want to expose to the user. */ | |
c4093a6a | 3797 | annotate_field (7); |
8b93c638 | 3798 | ui_out_text (uiout, "\tstop only if "); |
0101ce28 JJ |
3799 | ui_out_field_string (uiout, "cond", b->cond_string); |
3800 | ui_out_text (uiout, "\n"); | |
3801 | } | |
3802 | ||
0d381245 | 3803 | if (!part_of_multiple && b->thread != -1) |
c4093a6a JM |
3804 | { |
3805 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3806 | ui_out_text (uiout, "\tstop only in thread "); |
3807 | ui_out_field_int (uiout, "thread", b->thread); | |
3808 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3809 | } |
3810 | ||
63c715c6 | 3811 | if (!part_of_multiple && b->hit_count) |
c4093a6a JM |
3812 | { |
3813 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3814 | if (ep_is_catchpoint (b)) |
3815 | ui_out_text (uiout, "\tcatchpoint"); | |
3816 | else | |
3817 | ui_out_text (uiout, "\tbreakpoint"); | |
3818 | ui_out_text (uiout, " already hit "); | |
3819 | ui_out_field_int (uiout, "times", b->hit_count); | |
3820 | if (b->hit_count == 1) | |
3821 | ui_out_text (uiout, " time\n"); | |
3822 | else | |
3823 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
3824 | } |
3825 | ||
fb40c209 AC |
3826 | /* Output the count also if it is zero, but only if this is |
3827 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 3828 | if (ui_out_is_mi_like_p (uiout)) |
63c715c6 | 3829 | if (!part_of_multiple && b->hit_count == 0) |
fb40c209 | 3830 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 3831 | |
0d381245 | 3832 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
3833 | { |
3834 | annotate_field (8); | |
8b93c638 JM |
3835 | ui_out_text (uiout, "\tignore next "); |
3836 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3837 | ui_out_text (uiout, " hits\n"); | |
c4093a6a JM |
3838 | } |
3839 | ||
0d381245 | 3840 | if (!part_of_multiple && (l = b->commands)) |
c4093a6a | 3841 | { |
3b31d625 EZ |
3842 | struct cleanup *script_chain; |
3843 | ||
c4093a6a | 3844 | annotate_field (9); |
3b31d625 | 3845 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 3846 | print_command_lines (uiout, l, 4); |
3b31d625 | 3847 | do_cleanups (script_chain); |
c4093a6a | 3848 | } |
d24317b4 VP |
3849 | |
3850 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) | |
3851 | { | |
3852 | if (b->addr_string) | |
3853 | ui_out_field_string (uiout, "original-location", b->addr_string); | |
3854 | else if (b->exp_string) | |
3855 | ui_out_field_string (uiout, "original-location", b->exp_string); | |
3856 | } | |
3857 | ||
3b31d625 | 3858 | do_cleanups (bkpt_chain); |
8b93c638 | 3859 | do_cleanups (old_chain); |
c4093a6a | 3860 | } |
c5aa993b | 3861 | |
0d381245 VP |
3862 | static void |
3863 | print_one_breakpoint (struct breakpoint *b, | |
3864 | CORE_ADDR *last_addr) | |
3865 | { | |
3866 | print_one_breakpoint_location (b, NULL, 0, last_addr); | |
3867 | ||
3868 | /* If this breakpoint has custom print function, | |
3869 | it's already printed. Otherwise, print individual | |
3870 | locations, if any. */ | |
3871 | if (b->ops == NULL || b->ops->print_one == NULL) | |
3872 | { | |
3873 | /* If breakpoint has a single location that is | |
3874 | disabled, we print it as if it had | |
3875 | several locations, since otherwise it's hard to | |
3876 | represent "breakpoint enabled, location disabled" | |
a5606eee VP |
3877 | situation. |
3878 | Note that while hardware watchpoints have | |
3879 | several locations internally, that's no a property | |
3880 | exposed to user. */ | |
0d381245 | 3881 | if (b->loc |
a5606eee | 3882 | && !is_hardware_watchpoint (b) |
0d381245 | 3883 | && (b->loc->next || !b->loc->enabled) |
a5606eee | 3884 | && !ui_out_is_mi_like_p (uiout)) |
0d381245 VP |
3885 | { |
3886 | struct bp_location *loc; | |
3887 | int n = 1; | |
3888 | for (loc = b->loc; loc; loc = loc->next, ++n) | |
3889 | print_one_breakpoint_location (b, loc, n, last_addr); | |
3890 | } | |
3891 | } | |
3892 | } | |
3893 | ||
3894 | ||
c4093a6a JM |
3895 | struct captured_breakpoint_query_args |
3896 | { | |
3897 | int bnum; | |
3898 | }; | |
c5aa993b | 3899 | |
c4093a6a | 3900 | static int |
2b65245e | 3901 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
3902 | { |
3903 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 3904 | struct breakpoint *b; |
c4093a6a JM |
3905 | CORE_ADDR dummy_addr = 0; |
3906 | ALL_BREAKPOINTS (b) | |
3907 | { | |
3908 | if (args->bnum == b->number) | |
c5aa993b | 3909 | { |
c4093a6a JM |
3910 | print_one_breakpoint (b, &dummy_addr); |
3911 | return GDB_RC_OK; | |
c5aa993b | 3912 | } |
c4093a6a JM |
3913 | } |
3914 | return GDB_RC_NONE; | |
3915 | } | |
c5aa993b | 3916 | |
c4093a6a | 3917 | enum gdb_rc |
ce43223b | 3918 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, char **error_message) |
c4093a6a JM |
3919 | { |
3920 | struct captured_breakpoint_query_args args; | |
3921 | args.bnum = bnum; | |
3922 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3923 | an error. */ | |
b0b13bb4 DJ |
3924 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
3925 | error_message, RETURN_MASK_ALL) < 0) | |
3926 | return GDB_RC_FAIL; | |
3927 | else | |
3928 | return GDB_RC_OK; | |
c4093a6a | 3929 | } |
c5aa993b | 3930 | |
7f3b0473 AC |
3931 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
3932 | catchpoints, et.al.). */ | |
3933 | ||
3934 | static int | |
3935 | user_settable_breakpoint (const struct breakpoint *b) | |
3936 | { | |
3937 | return (b->type == bp_breakpoint | |
3938 | || b->type == bp_catch_load | |
3939 | || b->type == bp_catch_unload | |
3940 | || b->type == bp_catch_fork | |
3941 | || b->type == bp_catch_vfork | |
3942 | || b->type == bp_catch_exec | |
7f3b0473 AC |
3943 | || b->type == bp_hardware_breakpoint |
3944 | || b->type == bp_watchpoint | |
3945 | || b->type == bp_read_watchpoint | |
3946 | || b->type == bp_access_watchpoint | |
3947 | || b->type == bp_hardware_watchpoint); | |
3948 | } | |
3949 | ||
3950 | /* Print information on user settable breakpoint (watchpoint, etc) | |
3951 | number BNUM. If BNUM is -1 print all user settable breakpoints. | |
3952 | If ALLFLAG is non-zero, include non- user settable breakpoints. */ | |
c906108c | 3953 | |
c4093a6a | 3954 | static void |
fba45db2 | 3955 | breakpoint_1 (int bnum, int allflag) |
c4093a6a | 3956 | { |
52f0bd74 | 3957 | struct breakpoint *b; |
c4093a6a | 3958 | CORE_ADDR last_addr = (CORE_ADDR) -1; |
7f3b0473 | 3959 | int nr_printable_breakpoints; |
3b31d625 | 3960 | struct cleanup *bkpttbl_chain; |
c4093a6a | 3961 | |
7f3b0473 AC |
3962 | /* Compute the number of rows in the table. */ |
3963 | nr_printable_breakpoints = 0; | |
3964 | ALL_BREAKPOINTS (b) | |
3965 | if (bnum == -1 | |
3966 | || bnum == b->number) | |
3967 | { | |
3968 | if (allflag || user_settable_breakpoint (b)) | |
3969 | nr_printable_breakpoints++; | |
3970 | } | |
3971 | ||
8b93c638 | 3972 | if (addressprint) |
3b31d625 EZ |
3973 | bkpttbl_chain |
3974 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
3975 | "BreakpointTable"); | |
8b93c638 | 3976 | else |
3b31d625 EZ |
3977 | bkpttbl_chain |
3978 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
3979 | "BreakpointTable"); | |
8b93c638 | 3980 | |
7f3b0473 | 3981 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
3982 | annotate_breakpoints_headers (); |
3983 | if (nr_printable_breakpoints > 0) | |
3984 | annotate_field (0); | |
0d381245 | 3985 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
3986 | if (nr_printable_breakpoints > 0) |
3987 | annotate_field (1); | |
3988 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
3989 | if (nr_printable_breakpoints > 0) | |
3990 | annotate_field (2); | |
3991 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
3992 | if (nr_printable_breakpoints > 0) | |
3993 | annotate_field (3); | |
54e52265 | 3994 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
d7faa9e7 | 3995 | if (addressprint) |
7f3b0473 | 3996 | { |
d7faa9e7 AC |
3997 | if (nr_printable_breakpoints > 0) |
3998 | annotate_field (4); | |
17a912b6 | 3999 | if (gdbarch_addr_bit (current_gdbarch) <= 32) |
b25959ec | 4000 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 4001 | else |
b25959ec | 4002 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 4003 | } |
d7faa9e7 AC |
4004 | if (nr_printable_breakpoints > 0) |
4005 | annotate_field (5); | |
4006 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
4007 | ui_out_table_body (uiout); | |
4008 | if (nr_printable_breakpoints > 0) | |
4009 | annotate_breakpoints_table (); | |
7f3b0473 | 4010 | |
c4093a6a JM |
4011 | ALL_BREAKPOINTS (b) |
4012 | if (bnum == -1 | |
4013 | || bnum == b->number) | |
4014 | { | |
4015 | /* We only print out user settable breakpoints unless the | |
4016 | allflag is set. */ | |
7f3b0473 AC |
4017 | if (allflag || user_settable_breakpoint (b)) |
4018 | print_one_breakpoint (b, &last_addr); | |
c4093a6a JM |
4019 | } |
4020 | ||
3b31d625 | 4021 | do_cleanups (bkpttbl_chain); |
698384cd | 4022 | |
7f3b0473 | 4023 | if (nr_printable_breakpoints == 0) |
c906108c | 4024 | { |
8b93c638 JM |
4025 | if (bnum == -1) |
4026 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
4027 | else | |
4028 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
4029 | bnum); | |
c906108c SS |
4030 | } |
4031 | else | |
c4093a6a JM |
4032 | { |
4033 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
4034 | that a comparison of an unsigned with -1 is always false. */ | |
d1aa2f50 | 4035 | if (last_addr != (CORE_ADDR) -1 && !server_command) |
8b9b9e1a | 4036 | set_next_address (current_gdbarch, last_addr); |
c4093a6a | 4037 | } |
c906108c | 4038 | |
c4093a6a JM |
4039 | /* FIXME? Should this be moved up so that it is only called when |
4040 | there have been breakpoints? */ | |
c906108c SS |
4041 | annotate_breakpoints_table_end (); |
4042 | } | |
4043 | ||
c906108c | 4044 | static void |
fba45db2 | 4045 | breakpoints_info (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, 0); | |
4053 | } | |
4054 | ||
7a292a7a | 4055 | static void |
fba45db2 | 4056 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
4057 | { |
4058 | int bnum = -1; | |
4059 | ||
4060 | if (bnum_exp) | |
bb518678 | 4061 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
4062 | |
4063 | breakpoint_1 (bnum, 1); | |
4064 | } | |
4065 | ||
0d381245 | 4066 | static int |
714835d5 UW |
4067 | breakpoint_has_pc (struct breakpoint *b, |
4068 | CORE_ADDR pc, struct obj_section *section) | |
0d381245 VP |
4069 | { |
4070 | struct bp_location *bl = b->loc; | |
4071 | for (; bl; bl = bl->next) | |
4072 | { | |
4073 | if (bl->address == pc | |
4074 | && (!overlay_debugging || bl->section == section)) | |
4075 | return 1; | |
4076 | } | |
4077 | return 0; | |
4078 | } | |
4079 | ||
c906108c SS |
4080 | /* Print a message describing any breakpoints set at PC. */ |
4081 | ||
4082 | static void | |
714835d5 UW |
4083 | describe_other_breakpoints (CORE_ADDR pc, struct obj_section *section, |
4084 | int thread) | |
c906108c | 4085 | { |
52f0bd74 AC |
4086 | int others = 0; |
4087 | struct breakpoint *b; | |
c906108c SS |
4088 | |
4089 | ALL_BREAKPOINTS (b) | |
0d381245 | 4090 | others += breakpoint_has_pc (b, pc, section); |
c906108c SS |
4091 | if (others > 0) |
4092 | { | |
a3f17187 AC |
4093 | if (others == 1) |
4094 | printf_filtered (_("Note: breakpoint ")); | |
4095 | else /* if (others == ???) */ | |
4096 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 4097 | ALL_BREAKPOINTS (b) |
0d381245 VP |
4098 | if (breakpoint_has_pc (b, pc, section)) |
4099 | { | |
4100 | others--; | |
4101 | printf_filtered ("%d", b->number); | |
4102 | if (b->thread == -1 && thread != -1) | |
4103 | printf_filtered (" (all threads)"); | |
4104 | else if (b->thread != -1) | |
4105 | printf_filtered (" (thread %d)", b->thread); | |
4106 | printf_filtered ("%s%s ", | |
4107 | ((b->enable_state == bp_disabled || | |
4108 | b->enable_state == bp_call_disabled) | |
4109 | ? " (disabled)" | |
4110 | : b->enable_state == bp_permanent | |
4111 | ? " (permanent)" | |
4112 | : ""), | |
4113 | (others > 1) ? "," | |
4114 | : ((others == 1) ? " and" : "")); | |
4115 | } | |
a3f17187 | 4116 | printf_filtered (_("also set at pc ")); |
ed49a04f | 4117 | fputs_filtered (paddress (pc), gdb_stdout); |
c906108c SS |
4118 | printf_filtered (".\n"); |
4119 | } | |
4120 | } | |
4121 | \f | |
4122 | /* Set the default place to put a breakpoint | |
4123 | for the `break' command with no arguments. */ | |
4124 | ||
4125 | void | |
fba45db2 KB |
4126 | set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, |
4127 | int line) | |
c906108c SS |
4128 | { |
4129 | default_breakpoint_valid = valid; | |
4130 | default_breakpoint_address = addr; | |
4131 | default_breakpoint_symtab = symtab; | |
4132 | default_breakpoint_line = line; | |
4133 | } | |
4134 | ||
e4f237da KB |
4135 | /* Return true iff it is meaningful to use the address member of |
4136 | BPT. For some breakpoint types, the address member is irrelevant | |
4137 | and it makes no sense to attempt to compare it to other addresses | |
4138 | (or use it for any other purpose either). | |
4139 | ||
4140 | More specifically, each of the following breakpoint types will always | |
4141 | have a zero valued address and we don't want check_duplicates() to mark | |
4142 | breakpoints of any of these types to be a duplicate of an actual | |
4143 | breakpoint at address zero: | |
4144 | ||
4145 | bp_watchpoint | |
4146 | bp_hardware_watchpoint | |
4147 | bp_read_watchpoint | |
4148 | bp_access_watchpoint | |
4149 | bp_catch_exec | |
e4f237da KB |
4150 | bp_catch_fork |
4151 | bp_catch_vork */ | |
4152 | ||
4153 | static int | |
4154 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
4155 | { | |
4156 | enum bptype type = bpt->type; | |
4157 | ||
4158 | return (type != bp_watchpoint | |
4159 | && type != bp_hardware_watchpoint | |
4160 | && type != bp_read_watchpoint | |
4161 | && type != bp_access_watchpoint | |
4162 | && type != bp_catch_exec | |
e4f237da KB |
4163 | && type != bp_catch_fork |
4164 | && type != bp_catch_vfork); | |
4165 | } | |
4166 | ||
9f60f21b | 4167 | /* Rescan breakpoints at the same address and section as BPT, |
c906108c | 4168 | marking the first one as "first" and any others as "duplicates". |
c2c6d25f | 4169 | This is so that the bpt instruction is only inserted once. |
9f60f21b JB |
4170 | If we have a permanent breakpoint at the same place as BPT, make |
4171 | that one the official one, and the rest as duplicates. */ | |
c906108c SS |
4172 | |
4173 | static void | |
714835d5 | 4174 | check_duplicates_for (CORE_ADDR address, struct obj_section *section) |
c906108c | 4175 | { |
075f6582 | 4176 | struct bp_location *b; |
52f0bd74 | 4177 | int count = 0; |
075f6582 | 4178 | struct bp_location *perm_bp = 0; |
c906108c | 4179 | |
075f6582 DJ |
4180 | ALL_BP_LOCATIONS (b) |
4181 | if (b->owner->enable_state != bp_disabled | |
075f6582 | 4182 | && b->owner->enable_state != bp_call_disabled |
0d381245 VP |
4183 | && b->enabled |
4184 | && !b->shlib_disabled | |
075f6582 DJ |
4185 | && b->address == address /* address / overlay match */ |
4186 | && (!overlay_debugging || b->section == section) | |
4187 | && breakpoint_address_is_meaningful (b->owner)) | |
c5aa993b | 4188 | { |
c2c6d25f | 4189 | /* Have we found a permanent breakpoint? */ |
075f6582 | 4190 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
4191 | { |
4192 | perm_bp = b; | |
4193 | break; | |
4194 | } | |
4195 | ||
c5aa993b | 4196 | count++; |
075f6582 | 4197 | b->duplicate = count > 1; |
c5aa993b | 4198 | } |
c2c6d25f JM |
4199 | |
4200 | /* If we found a permanent breakpoint at this address, go over the | |
4201 | list again and declare all the other breakpoints there to be the | |
4202 | duplicates. */ | |
4203 | if (perm_bp) | |
4204 | { | |
075f6582 | 4205 | perm_bp->duplicate = 0; |
c2c6d25f JM |
4206 | |
4207 | /* Permanent breakpoint should always be inserted. */ | |
075f6582 | 4208 | if (! perm_bp->inserted) |
8e65ff28 | 4209 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 AC |
4210 | _("allegedly permanent breakpoint is not " |
4211 | "actually inserted")); | |
c2c6d25f | 4212 | |
075f6582 | 4213 | ALL_BP_LOCATIONS (b) |
c2c6d25f JM |
4214 | if (b != perm_bp) |
4215 | { | |
075f6582 | 4216 | if (b->owner->enable_state != bp_disabled |
075f6582 | 4217 | && b->owner->enable_state != bp_call_disabled |
0d381245 | 4218 | && b->enabled && !b->shlib_disabled |
075f6582 DJ |
4219 | && b->address == address /* address / overlay match */ |
4220 | && (!overlay_debugging || b->section == section) | |
4221 | && breakpoint_address_is_meaningful (b->owner)) | |
4222 | { | |
4223 | if (b->inserted) | |
4224 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 AC |
4225 | _("another breakpoint was inserted on top of " |
4226 | "a permanent breakpoint")); | |
075f6582 DJ |
4227 | |
4228 | b->duplicate = 1; | |
4229 | } | |
c2c6d25f JM |
4230 | } |
4231 | } | |
c906108c SS |
4232 | } |
4233 | ||
0d381245 VP |
4234 | static void |
4235 | check_duplicates (struct breakpoint *bpt) | |
4236 | { | |
4237 | struct bp_location *bl = bpt->loc; | |
4238 | ||
4239 | if (! breakpoint_address_is_meaningful (bpt)) | |
4240 | return; | |
4241 | ||
4242 | for (; bl; bl = bl->next) | |
4243 | check_duplicates_for (bl->address, bl->section); | |
4244 | } | |
4245 | ||
76897487 KB |
4246 | static void |
4247 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
4248 | int bnum, int have_bnum) | |
4249 | { | |
4250 | char astr1[40]; | |
4251 | char astr2[40]; | |
4252 | ||
bb599908 PH |
4253 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
4254 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 4255 | if (have_bnum) |
8a3fe4f8 | 4256 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
4257 | bnum, astr1, astr2); |
4258 | else | |
8a3fe4f8 | 4259 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
4260 | } |
4261 | ||
4262 | /* Adjust a breakpoint's address to account for architectural constraints | |
4263 | on breakpoint placement. Return the adjusted address. Note: Very | |
4264 | few targets require this kind of adjustment. For most targets, | |
4265 | this function is simply the identity function. */ | |
4266 | ||
4267 | static CORE_ADDR | |
88f7da05 | 4268 | adjust_breakpoint_address (CORE_ADDR bpaddr, enum bptype bptype) |
76897487 KB |
4269 | { |
4270 | if (!gdbarch_adjust_breakpoint_address_p (current_gdbarch)) | |
4271 | { | |
4272 | /* Very few targets need any kind of breakpoint adjustment. */ | |
4273 | return bpaddr; | |
4274 | } | |
88f7da05 KB |
4275 | else if (bptype == bp_watchpoint |
4276 | || bptype == bp_hardware_watchpoint | |
4277 | || bptype == bp_read_watchpoint | |
4278 | || bptype == bp_access_watchpoint | |
4279 | || bptype == bp_catch_fork | |
4280 | || bptype == bp_catch_vfork | |
4281 | || bptype == bp_catch_exec) | |
4282 | { | |
4283 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
4284 | have their addresses modified. */ | |
4285 | return bpaddr; | |
4286 | } | |
76897487 KB |
4287 | else |
4288 | { | |
4289 | CORE_ADDR adjusted_bpaddr; | |
4290 | ||
4291 | /* Some targets have architectural constraints on the placement | |
4292 | of breakpoint instructions. Obtain the adjusted address. */ | |
4293 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (current_gdbarch, | |
4294 | bpaddr); | |
4295 | ||
4296 | /* An adjusted breakpoint address can significantly alter | |
4297 | a user's expectations. Print a warning if an adjustment | |
4298 | is required. */ | |
4299 | if (adjusted_bpaddr != bpaddr) | |
4300 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
4301 | ||
4302 | return adjusted_bpaddr; | |
4303 | } | |
4304 | } | |
4305 | ||
7cc221ef DJ |
4306 | /* Allocate a struct bp_location. */ |
4307 | ||
26bb91f3 | 4308 | static struct bp_location * |
e049a4b5 | 4309 | allocate_bp_location (struct breakpoint *bpt, enum bptype bp_type) |
7cc221ef DJ |
4310 | { |
4311 | struct bp_location *loc, *loc_p; | |
4312 | ||
4313 | loc = xmalloc (sizeof (struct bp_location)); | |
4314 | memset (loc, 0, sizeof (*loc)); | |
4315 | ||
e049a4b5 | 4316 | loc->owner = bpt; |
511a6cd4 | 4317 | loc->cond = NULL; |
0d381245 VP |
4318 | loc->shlib_disabled = 0; |
4319 | loc->enabled = 1; | |
e049a4b5 DJ |
4320 | |
4321 | switch (bp_type) | |
4322 | { | |
4323 | case bp_breakpoint: | |
4324 | case bp_until: | |
4325 | case bp_finish: | |
4326 | case bp_longjmp: | |
4327 | case bp_longjmp_resume: | |
4328 | case bp_step_resume: | |
e049a4b5 DJ |
4329 | case bp_watchpoint_scope: |
4330 | case bp_call_dummy: | |
4331 | case bp_shlib_event: | |
4332 | case bp_thread_event: | |
4333 | case bp_overlay_event: | |
4334 | case bp_catch_load: | |
4335 | case bp_catch_unload: | |
4336 | loc->loc_type = bp_loc_software_breakpoint; | |
4337 | break; | |
4338 | case bp_hardware_breakpoint: | |
4339 | loc->loc_type = bp_loc_hardware_breakpoint; | |
4340 | break; | |
4341 | case bp_hardware_watchpoint: | |
4342 | case bp_read_watchpoint: | |
4343 | case bp_access_watchpoint: | |
4344 | loc->loc_type = bp_loc_hardware_watchpoint; | |
4345 | break; | |
4346 | case bp_watchpoint: | |
4347 | case bp_catch_fork: | |
4348 | case bp_catch_vfork: | |
4349 | case bp_catch_exec: | |
e049a4b5 DJ |
4350 | loc->loc_type = bp_loc_other; |
4351 | break; | |
4352 | default: | |
e2e0b3e5 | 4353 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
4354 | } |
4355 | ||
7cc221ef DJ |
4356 | return loc; |
4357 | } | |
4358 | ||
fe3f5fa8 VP |
4359 | static void free_bp_location (struct bp_location *loc) |
4360 | { | |
4361 | if (loc->cond) | |
4362 | xfree (loc->cond); | |
74960c60 VP |
4363 | |
4364 | if (loc->function_name) | |
4365 | xfree (loc->function_name); | |
4366 | ||
fe3f5fa8 VP |
4367 | xfree (loc); |
4368 | } | |
4369 | ||
0d381245 VP |
4370 | /* Helper to set_raw_breakpoint below. Creates a breakpoint |
4371 | that has type BPTYPE and has no locations as yet. */ | |
c906108c | 4372 | |
c40e75cd | 4373 | static struct breakpoint * |
0d381245 | 4374 | set_raw_breakpoint_without_location (enum bptype bptype) |
c906108c | 4375 | { |
52f0bd74 | 4376 | struct breakpoint *b, *b1; |
c906108c SS |
4377 | |
4378 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4379 | memset (b, 0, sizeof (*b)); | |
2219d63c | 4380 | |
4d28f7a8 | 4381 | b->type = bptype; |
c906108c SS |
4382 | b->language = current_language->la_language; |
4383 | b->input_radix = input_radix; | |
4384 | b->thread = -1; | |
b5de0fa7 | 4385 | b->enable_state = bp_enabled; |
c906108c SS |
4386 | b->next = 0; |
4387 | b->silent = 0; | |
4388 | b->ignore_count = 0; | |
4389 | b->commands = NULL; | |
818dd999 | 4390 | b->frame_id = null_frame_id; |
c906108c SS |
4391 | b->dll_pathname = NULL; |
4392 | b->triggered_dll_pathname = NULL; | |
3a3e9ee3 | 4393 | b->forked_inferior_pid = null_ptid; |
c906108c | 4394 | b->exec_pathname = NULL; |
3086aeae | 4395 | b->ops = NULL; |
0d381245 | 4396 | b->condition_not_parsed = 0; |
c906108c SS |
4397 | |
4398 | /* Add this breakpoint to the end of the chain | |
4399 | so that a list of breakpoints will come out in order | |
4400 | of increasing numbers. */ | |
4401 | ||
4402 | b1 = breakpoint_chain; | |
4403 | if (b1 == 0) | |
4404 | breakpoint_chain = b; | |
4405 | else | |
4406 | { | |
4407 | while (b1->next) | |
4408 | b1 = b1->next; | |
4409 | b1->next = b; | |
4410 | } | |
0d381245 VP |
4411 | return b; |
4412 | } | |
4413 | ||
4414 | /* Initialize loc->function_name. */ | |
4415 | static void | |
4416 | set_breakpoint_location_function (struct bp_location *loc) | |
4417 | { | |
4418 | if (loc->owner->type == bp_breakpoint | |
4419 | || loc->owner->type == bp_hardware_breakpoint) | |
4420 | { | |
4421 | find_pc_partial_function (loc->address, &(loc->function_name), | |
4422 | NULL, NULL); | |
4423 | if (loc->function_name) | |
4424 | loc->function_name = xstrdup (loc->function_name); | |
4425 | } | |
4426 | } | |
4427 | ||
4428 | /* set_raw_breakpoint is a low level routine for allocating and | |
4429 | partially initializing a breakpoint of type BPTYPE. The newly | |
4430 | created breakpoint's address, section, source file name, and line | |
4431 | number are provided by SAL. The newly created and partially | |
4432 | initialized breakpoint is added to the breakpoint chain and | |
4433 | is also returned as the value of this function. | |
4434 | ||
4435 | It is expected that the caller will complete the initialization of | |
4436 | the newly created breakpoint struct as well as output any status | |
4437 | information regarding the creation of a new breakpoint. In | |
4438 | particular, set_raw_breakpoint does NOT set the breakpoint | |
4439 | number! Care should be taken to not allow an error to occur | |
4440 | prior to completing the initialization of the breakpoint. If this | |
4441 | should happen, a bogus breakpoint will be left on the chain. */ | |
4442 | ||
4443 | struct breakpoint * | |
4444 | set_raw_breakpoint (struct symtab_and_line sal, enum bptype bptype) | |
4445 | { | |
4446 | struct breakpoint *b = set_raw_breakpoint_without_location (bptype); | |
4447 | CORE_ADDR adjusted_address; | |
4448 | ||
4449 | /* Adjust the breakpoint's address prior to allocating a location. | |
4450 | Once we call allocate_bp_location(), that mostly uninitialized | |
4451 | location will be placed on the location chain. Adjustment of the | |
8defab1a | 4452 | breakpoint may cause target_read_memory() to be called and we do |
0d381245 VP |
4453 | not want its scan of the location chain to find a breakpoint and |
4454 | location that's only been partially initialized. */ | |
4455 | adjusted_address = adjust_breakpoint_address (sal.pc, bptype); | |
4456 | ||
4457 | b->loc = allocate_bp_location (b, bptype); | |
4458 | b->loc->requested_address = sal.pc; | |
4459 | b->loc->address = adjusted_address; | |
4460 | ||
4461 | if (sal.symtab == NULL) | |
4462 | b->source_file = NULL; | |
4463 | else | |
4464 | b->source_file = savestring (sal.symtab->filename, | |
4465 | strlen (sal.symtab->filename)); | |
4466 | b->loc->section = sal.section; | |
4467 | b->line_number = sal.line; | |
4468 | ||
4469 | set_breakpoint_location_function (b->loc); | |
c906108c | 4470 | |
c906108c SS |
4471 | breakpoints_changed (); |
4472 | ||
4473 | return b; | |
4474 | } | |
4475 | ||
c2c6d25f JM |
4476 | |
4477 | /* Note that the breakpoint object B describes a permanent breakpoint | |
4478 | instruction, hard-wired into the inferior's code. */ | |
4479 | void | |
4480 | make_breakpoint_permanent (struct breakpoint *b) | |
4481 | { | |
0d381245 | 4482 | struct bp_location *bl; |
b5de0fa7 | 4483 | b->enable_state = bp_permanent; |
c2c6d25f | 4484 | |
0d381245 VP |
4485 | /* By definition, permanent breakpoints are already present in the code. |
4486 | Mark all locations as inserted. For now, make_breakpoint_permanent | |
4487 | is called in just one place, so it's hard to say if it's reasonable | |
4488 | to have permanent breakpoint with multiple locations or not, | |
4489 | but it's easy to implmement. */ | |
4490 | for (bl = b->loc; bl; bl = bl->next) | |
4491 | bl->inserted = 1; | |
c2c6d25f JM |
4492 | } |
4493 | ||
1900040c MS |
4494 | static struct breakpoint * |
4495 | create_internal_breakpoint (CORE_ADDR address, enum bptype type) | |
4496 | { | |
4497 | static int internal_breakpoint_number = -1; | |
4498 | struct symtab_and_line sal; | |
4499 | struct breakpoint *b; | |
4500 | ||
fe39c653 | 4501 | init_sal (&sal); /* initialize to zeroes */ |
1900040c MS |
4502 | |
4503 | sal.pc = address; | |
4504 | sal.section = find_pc_overlay (sal.pc); | |
4505 | ||
4506 | b = set_raw_breakpoint (sal, type); | |
4507 | b->number = internal_breakpoint_number--; | |
4508 | b->disposition = disp_donttouch; | |
4509 | ||
4510 | return b; | |
4511 | } | |
4512 | ||
c906108c SS |
4513 | |
4514 | static void | |
fba45db2 | 4515 | create_longjmp_breakpoint (char *func_name) |
c906108c | 4516 | { |
1900040c | 4517 | struct minimal_symbol *m; |
c906108c | 4518 | |
611c83ae PA |
4519 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
4520 | return; | |
4521 | set_momentary_breakpoint_at_pc (SYMBOL_VALUE_ADDRESS (m), bp_longjmp); | |
b60e7edf | 4522 | update_global_location_list (1); |
c906108c SS |
4523 | } |
4524 | ||
53a5351d JM |
4525 | /* Call this routine when stepping and nexting to enable a breakpoint |
4526 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
4527 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
4528 | ||
4529 | void | |
611c83ae | 4530 | set_longjmp_breakpoint (void) |
c906108c | 4531 | { |
611c83ae | 4532 | if (gdbarch_get_longjmp_target_p (current_gdbarch)) |
c5aa993b | 4533 | { |
611c83ae PA |
4534 | create_longjmp_breakpoint ("longjmp"); |
4535 | create_longjmp_breakpoint ("_longjmp"); | |
4536 | create_longjmp_breakpoint ("siglongjmp"); | |
4537 | create_longjmp_breakpoint ("_siglongjmp"); | |
c5aa993b | 4538 | } |
c906108c SS |
4539 | } |
4540 | ||
611c83ae | 4541 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 4542 | void |
611c83ae | 4543 | delete_longjmp_breakpoint (int thread) |
c906108c | 4544 | { |
611c83ae | 4545 | struct breakpoint *b, *temp; |
c906108c | 4546 | |
611c83ae PA |
4547 | ALL_BREAKPOINTS_SAFE (b, temp) |
4548 | if (b->type == bp_longjmp) | |
4549 | { | |
4550 | if (b->thread == thread) | |
4551 | delete_breakpoint (b); | |
4552 | } | |
c906108c SS |
4553 | } |
4554 | ||
1900040c | 4555 | static void |
25db0f1b | 4556 | create_overlay_event_breakpoint_1 (char *func_name, struct objfile *objfile) |
1900040c MS |
4557 | { |
4558 | struct breakpoint *b; | |
4559 | struct minimal_symbol *m; | |
4560 | ||
25db0f1b | 4561 | if ((m = lookup_minimal_symbol_text (func_name, objfile)) == NULL) |
1900040c MS |
4562 | return; |
4563 | ||
4564 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), | |
4565 | bp_overlay_event); | |
4566 | b->addr_string = xstrdup (func_name); | |
4567 | ||
4568 | if (overlay_debugging == ovly_auto) | |
c02f5703 MS |
4569 | { |
4570 | b->enable_state = bp_enabled; | |
4571 | overlay_events_enabled = 1; | |
4572 | } | |
1900040c | 4573 | else |
c02f5703 MS |
4574 | { |
4575 | b->enable_state = bp_disabled; | |
4576 | overlay_events_enabled = 0; | |
4577 | } | |
b60e7edf | 4578 | update_global_location_list (1); |
1900040c MS |
4579 | } |
4580 | ||
25db0f1b UW |
4581 | static void |
4582 | create_overlay_event_breakpoint (char *func_name) | |
4583 | { | |
4584 | struct objfile *objfile; | |
4585 | ALL_OBJFILES (objfile) | |
4586 | create_overlay_event_breakpoint_1 (func_name, objfile); | |
4587 | } | |
4588 | ||
1900040c MS |
4589 | void |
4590 | enable_overlay_breakpoints (void) | |
4591 | { | |
52f0bd74 | 4592 | struct breakpoint *b; |
1900040c MS |
4593 | |
4594 | ALL_BREAKPOINTS (b) | |
4595 | if (b->type == bp_overlay_event) | |
4596 | { | |
4597 | b->enable_state = bp_enabled; | |
b60e7edf | 4598 | update_global_location_list (1); |
c02f5703 | 4599 | overlay_events_enabled = 1; |
1900040c MS |
4600 | } |
4601 | } | |
4602 | ||
4603 | void | |
4604 | disable_overlay_breakpoints (void) | |
4605 | { | |
52f0bd74 | 4606 | struct breakpoint *b; |
1900040c MS |
4607 | |
4608 | ALL_BREAKPOINTS (b) | |
4609 | if (b->type == bp_overlay_event) | |
4610 | { | |
4611 | b->enable_state = bp_disabled; | |
b60e7edf | 4612 | update_global_location_list (0); |
c02f5703 | 4613 | overlay_events_enabled = 0; |
1900040c MS |
4614 | } |
4615 | } | |
4616 | ||
c4093a6a | 4617 | struct breakpoint * |
fba45db2 | 4618 | create_thread_event_breakpoint (CORE_ADDR address) |
c4093a6a JM |
4619 | { |
4620 | struct breakpoint *b; | |
c4093a6a | 4621 | |
1900040c | 4622 | b = create_internal_breakpoint (address, bp_thread_event); |
c4093a6a | 4623 | |
b5de0fa7 | 4624 | b->enable_state = bp_enabled; |
c4093a6a | 4625 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
b435e160 | 4626 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); |
c4093a6a | 4627 | |
b60e7edf | 4628 | update_global_location_list_nothrow (1); |
74960c60 | 4629 | |
c4093a6a JM |
4630 | return b; |
4631 | } | |
4632 | ||
4633 | void | |
4634 | remove_thread_event_breakpoints (void) | |
4635 | { | |
4636 | struct breakpoint *b, *temp; | |
4637 | ||
4638 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4639 | if (b->type == bp_thread_event) | |
4640 | delete_breakpoint (b); | |
4641 | } | |
4642 | ||
0101ce28 JJ |
4643 | struct captured_parse_breakpoint_args |
4644 | { | |
4645 | char **arg_p; | |
4646 | struct symtabs_and_lines *sals_p; | |
4647 | char ***addr_string_p; | |
4648 | int *not_found_ptr; | |
4649 | }; | |
4650 | ||
4651 | struct lang_and_radix | |
4652 | { | |
4653 | enum language lang; | |
4654 | int radix; | |
4655 | }; | |
4656 | ||
0101ce28 | 4657 | |
cae688ec JJ |
4658 | void |
4659 | remove_solib_event_breakpoints (void) | |
4660 | { | |
4661 | struct breakpoint *b, *temp; | |
4662 | ||
4663 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4664 | if (b->type == bp_shlib_event) | |
4665 | delete_breakpoint (b); | |
4666 | } | |
4667 | ||
4668 | struct breakpoint * | |
4669 | create_solib_event_breakpoint (CORE_ADDR address) | |
4670 | { | |
4671 | struct breakpoint *b; | |
4672 | ||
4673 | b = create_internal_breakpoint (address, bp_shlib_event); | |
b60e7edf | 4674 | update_global_location_list_nothrow (1); |
cae688ec JJ |
4675 | return b; |
4676 | } | |
4677 | ||
4678 | /* Disable any breakpoints that are on code in shared libraries. Only | |
4679 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4680 | ||
4681 | void | |
cb851954 | 4682 | disable_breakpoints_in_shlibs (void) |
cae688ec | 4683 | { |
0d381245 | 4684 | struct bp_location *loc; |
cae688ec JJ |
4685 | int disabled_shlib_breaks = 0; |
4686 | ||
0d381245 | 4687 | ALL_BP_LOCATIONS (loc) |
cae688ec | 4688 | { |
0d381245 VP |
4689 | struct breakpoint *b = loc->owner; |
4690 | /* We apply the check to all breakpoints, including disabled | |
4691 | for those with loc->duplicate set. This is so that when breakpoint | |
4692 | becomes enabled, or the duplicate is removed, gdb will try to insert | |
4693 | all breakpoints. If we don't set shlib_disabled here, we'll try | |
4694 | to insert those breakpoints and fail. */ | |
a77053c2 | 4695 | if (((b->type == bp_breakpoint) || (b->type == bp_hardware_breakpoint)) |
0d381245 | 4696 | && !loc->shlib_disabled |
a77053c2 | 4697 | #ifdef PC_SOLIB |
0d381245 | 4698 | && PC_SOLIB (loc->address) |
a77053c2 | 4699 | #else |
0d381245 | 4700 | && solib_address (loc->address) |
a77053c2 MK |
4701 | #endif |
4702 | ) | |
0d381245 VP |
4703 | { |
4704 | loc->shlib_disabled = 1; | |
4705 | } | |
cae688ec JJ |
4706 | } |
4707 | } | |
4708 | ||
84acb35a JJ |
4709 | /* Disable any breakpoints that are in in an unloaded shared library. Only |
4710 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4711 | ||
75149521 | 4712 | static void |
84acb35a JJ |
4713 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
4714 | { | |
0d381245 | 4715 | struct bp_location *loc; |
84acb35a JJ |
4716 | int disabled_shlib_breaks = 0; |
4717 | ||
0d381245 | 4718 | ALL_BP_LOCATIONS (loc) |
84acb35a | 4719 | { |
0d381245 VP |
4720 | struct breakpoint *b = loc->owner; |
4721 | if ((loc->loc_type == bp_loc_hardware_breakpoint | |
4722 | || loc->loc_type == bp_loc_software_breakpoint) | |
4723 | && !loc->shlib_disabled) | |
84acb35a | 4724 | { |
a77053c2 | 4725 | #ifdef PC_SOLIB |
0d381245 | 4726 | char *so_name = PC_SOLIB (loc->address); |
a77053c2 | 4727 | #else |
0d381245 | 4728 | char *so_name = solib_address (loc->address); |
a77053c2 MK |
4729 | #endif |
4730 | if (so_name && !strcmp (so_name, solib->so_name)) | |
84acb35a | 4731 | { |
0d381245 | 4732 | loc->shlib_disabled = 1; |
84acb35a JJ |
4733 | /* At this point, we cannot rely on remove_breakpoint |
4734 | succeeding so we must mark the breakpoint as not inserted | |
4735 | to prevent future errors occurring in remove_breakpoints. */ | |
0d381245 | 4736 | loc->inserted = 0; |
84acb35a JJ |
4737 | if (!disabled_shlib_breaks) |
4738 | { | |
4739 | target_terminal_ours_for_output (); | |
8a3fe4f8 | 4740 | warning (_("Temporarily disabling breakpoints for unloaded shared library \"%s\""), |
84acb35a JJ |
4741 | so_name); |
4742 | } | |
4743 | disabled_shlib_breaks = 1; | |
4744 | } | |
4745 | } | |
4746 | } | |
84acb35a JJ |
4747 | } |
4748 | ||
c906108c | 4749 | static void |
fba45db2 KB |
4750 | create_fork_vfork_event_catchpoint (int tempflag, char *cond_string, |
4751 | enum bptype bp_kind) | |
c906108c | 4752 | { |
c5aa993b JM |
4753 | struct symtab_and_line sal; |
4754 | struct breakpoint *b; | |
4755 | int thread = -1; /* All threads. */ | |
4756 | ||
fe39c653 | 4757 | init_sal (&sal); |
c906108c SS |
4758 | sal.pc = 0; |
4759 | sal.symtab = NULL; | |
4760 | sal.line = 0; | |
c5aa993b | 4761 | |
4d28f7a8 | 4762 | b = set_raw_breakpoint (sal, bp_kind); |
c906108c SS |
4763 | set_breakpoint_count (breakpoint_count + 1); |
4764 | b->number = breakpoint_count; | |
53a5351d JM |
4765 | b->cond_string = (cond_string == NULL) ? |
4766 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4767 | b->thread = thread; |
4768 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4769 | b->enable_state = bp_enabled; |
4770 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
3a3e9ee3 | 4771 | b->forked_inferior_pid = null_ptid; |
b60e7edf | 4772 | update_global_location_list (1); |
74960c60 | 4773 | |
c5aa993b | 4774 | |
c906108c SS |
4775 | mention (b); |
4776 | } | |
4777 | ||
9b70b993 | 4778 | static void |
fba45db2 | 4779 | create_fork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4780 | { |
4781 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork); | |
4782 | } | |
c5aa993b | 4783 | |
9b70b993 | 4784 | static void |
fba45db2 | 4785 | create_vfork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4786 | { |
4787 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork); | |
4788 | } | |
4789 | ||
9b70b993 | 4790 | static void |
fba45db2 | 4791 | create_exec_event_catchpoint (int tempflag, char *cond_string) |
c906108c | 4792 | { |
c5aa993b JM |
4793 | struct symtab_and_line sal; |
4794 | struct breakpoint *b; | |
4795 | int thread = -1; /* All threads. */ | |
c906108c | 4796 | |
fe39c653 | 4797 | init_sal (&sal); |
c906108c SS |
4798 | sal.pc = 0; |
4799 | sal.symtab = NULL; | |
4800 | sal.line = 0; | |
4801 | ||
4d28f7a8 | 4802 | b = set_raw_breakpoint (sal, bp_catch_exec); |
c906108c SS |
4803 | set_breakpoint_count (breakpoint_count + 1); |
4804 | b->number = breakpoint_count; | |
53a5351d JM |
4805 | b->cond_string = (cond_string == NULL) ? |
4806 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4807 | b->thread = thread; |
4808 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4809 | b->enable_state = bp_enabled; |
4810 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
b60e7edf | 4811 | update_global_location_list (1); |
c906108c | 4812 | |
c906108c SS |
4813 | mention (b); |
4814 | } | |
4815 | ||
4816 | static int | |
fba45db2 | 4817 | hw_breakpoint_used_count (void) |
c906108c | 4818 | { |
52f0bd74 | 4819 | struct breakpoint *b; |
c906108c SS |
4820 | int i = 0; |
4821 | ||
4822 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4823 | { |
d6b74ac4 | 4824 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
c5aa993b JM |
4825 | i++; |
4826 | } | |
c906108c SS |
4827 | |
4828 | return i; | |
4829 | } | |
4830 | ||
4831 | static int | |
fba45db2 | 4832 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 4833 | { |
52f0bd74 | 4834 | struct breakpoint *b; |
c906108c SS |
4835 | int i = 0; |
4836 | ||
4837 | *other_type_used = 0; | |
4838 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4839 | { |
468d015d | 4840 | if (breakpoint_enabled (b)) |
c5aa993b JM |
4841 | { |
4842 | if (b->type == type) | |
4843 | i++; | |
4844 | else if ((b->type == bp_hardware_watchpoint || | |
4845 | b->type == bp_read_watchpoint || | |
468d015d | 4846 | b->type == bp_access_watchpoint)) |
c5aa993b JM |
4847 | *other_type_used = 1; |
4848 | } | |
4849 | } | |
c906108c SS |
4850 | return i; |
4851 | } | |
4852 | ||
c906108c | 4853 | void |
fba45db2 | 4854 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 4855 | { |
c5aa993b | 4856 | struct breakpoint *b; |
c906108c SS |
4857 | |
4858 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4859 | { |
4860 | if (((b->type == bp_watchpoint) | |
4861 | || (b->type == bp_hardware_watchpoint) | |
4862 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 4863 | || (b->type == bp_access_watchpoint)) |
468d015d | 4864 | && breakpoint_enabled (b)) |
c5aa993b | 4865 | { |
b5de0fa7 | 4866 | b->enable_state = bp_call_disabled; |
b60e7edf | 4867 | update_global_location_list (0); |
c5aa993b JM |
4868 | } |
4869 | } | |
c906108c SS |
4870 | } |
4871 | ||
4872 | void | |
fba45db2 | 4873 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 4874 | { |
c5aa993b | 4875 | struct breakpoint *b; |
c906108c SS |
4876 | |
4877 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4878 | { |
4879 | if (((b->type == bp_watchpoint) | |
4880 | || (b->type == bp_hardware_watchpoint) | |
4881 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 4882 | || (b->type == bp_access_watchpoint)) |
b5de0fa7 | 4883 | && (b->enable_state == bp_call_disabled)) |
c5aa993b | 4884 | { |
b5de0fa7 | 4885 | b->enable_state = bp_enabled; |
b60e7edf | 4886 | update_global_location_list (1); |
c5aa993b JM |
4887 | } |
4888 | } | |
c906108c SS |
4889 | } |
4890 | ||
4891 | ||
4892 | /* Set a breakpoint that will evaporate an end of command | |
4893 | at address specified by SAL. | |
4894 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
4895 | ||
4896 | struct breakpoint * | |
818dd999 | 4897 | set_momentary_breakpoint (struct symtab_and_line sal, struct frame_id frame_id, |
fba45db2 | 4898 | enum bptype type) |
c906108c | 4899 | { |
52f0bd74 | 4900 | struct breakpoint *b; |
4d28f7a8 | 4901 | b = set_raw_breakpoint (sal, type); |
b5de0fa7 EZ |
4902 | b->enable_state = bp_enabled; |
4903 | b->disposition = disp_donttouch; | |
818dd999 | 4904 | b->frame_id = frame_id; |
c906108c SS |
4905 | |
4906 | /* If we're debugging a multi-threaded program, then we | |
4907 | want momentary breakpoints to be active in only a | |
4908 | single thread of control. */ | |
39f77062 KB |
4909 | if (in_thread_list (inferior_ptid)) |
4910 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 4911 | |
b60e7edf | 4912 | update_global_location_list_nothrow (1); |
74960c60 | 4913 | |
c906108c SS |
4914 | return b; |
4915 | } | |
611c83ae PA |
4916 | |
4917 | struct breakpoint * | |
4918 | set_momentary_breakpoint_at_pc (CORE_ADDR pc, enum bptype type) | |
4919 | { | |
4920 | struct symtab_and_line sal; | |
4921 | ||
4922 | sal = find_pc_line (pc, 0); | |
4923 | sal.pc = pc; | |
4924 | sal.section = find_pc_overlay (pc); | |
4925 | sal.explicit_pc = 1; | |
4926 | ||
4927 | return set_momentary_breakpoint (sal, null_frame_id, type); | |
4928 | } | |
c906108c | 4929 | \f |
c5aa993b | 4930 | |
c906108c SS |
4931 | /* Tell the user we have just set a breakpoint B. */ |
4932 | ||
4933 | static void | |
fba45db2 | 4934 | mention (struct breakpoint *b) |
c906108c SS |
4935 | { |
4936 | int say_where = 0; | |
3b31d625 | 4937 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 JM |
4938 | struct ui_stream *stb; |
4939 | ||
4940 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 4941 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c | 4942 | |
9a4105ab AC |
4943 | /* FIXME: This is misplaced; mention() is called by things (like |
4944 | hitting a watchpoint) other than breakpoint creation. It should | |
4945 | be possible to clean this up and at the same time replace the | |
7f4b89d1 | 4946 | random calls to breakpoint_changed with this hook. */ |
383f836e | 4947 | observer_notify_breakpoint_created (b->number); |
c906108c | 4948 | |
3086aeae DJ |
4949 | if (b->ops != NULL && b->ops->print_mention != NULL) |
4950 | b->ops->print_mention (b); | |
4951 | else | |
4952 | switch (b->type) | |
4953 | { | |
4954 | case bp_none: | |
a3f17187 | 4955 | printf_filtered (_("(apparently deleted?) Eventpoint %d: "), b->number); |
3086aeae DJ |
4956 | break; |
4957 | case bp_watchpoint: | |
4958 | ui_out_text (uiout, "Watchpoint "); | |
4959 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4960 | ui_out_field_int (uiout, "number", b->number); | |
4961 | ui_out_text (uiout, ": "); | |
4962 | print_expression (b->exp, stb->stream); | |
4963 | ui_out_field_stream (uiout, "exp", stb); | |
4964 | do_cleanups (ui_out_chain); | |
4965 | break; | |
4966 | case bp_hardware_watchpoint: | |
4967 | ui_out_text (uiout, "Hardware watchpoint "); | |
4968 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4969 | ui_out_field_int (uiout, "number", b->number); | |
4970 | ui_out_text (uiout, ": "); | |
4971 | print_expression (b->exp, stb->stream); | |
4972 | ui_out_field_stream (uiout, "exp", stb); | |
4973 | do_cleanups (ui_out_chain); | |
4974 | break; | |
4975 | case bp_read_watchpoint: | |
4976 | ui_out_text (uiout, "Hardware read watchpoint "); | |
4977 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
4978 | ui_out_field_int (uiout, "number", b->number); | |
4979 | ui_out_text (uiout, ": "); | |
4980 | print_expression (b->exp, stb->stream); | |
4981 | ui_out_field_stream (uiout, "exp", stb); | |
4982 | do_cleanups (ui_out_chain); | |
4983 | break; | |
4984 | case bp_access_watchpoint: | |
4985 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
4986 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
4987 | ui_out_field_int (uiout, "number", b->number); | |
4988 | ui_out_text (uiout, ": "); | |
4989 | print_expression (b->exp, stb->stream); | |
4990 | ui_out_field_stream (uiout, "exp", stb); | |
4991 | do_cleanups (ui_out_chain); | |
4992 | break; | |
4993 | case bp_breakpoint: | |
4994 | if (ui_out_is_mi_like_p (uiout)) | |
4995 | { | |
4996 | say_where = 0; | |
4997 | break; | |
4998 | } | |
2cec12e5 AR |
4999 | if (b->disposition == disp_del) |
5000 | printf_filtered (_("Temporary breakpoint")); | |
5001 | else | |
5002 | printf_filtered (_("Breakpoint")); | |
5003 | printf_filtered (_(" %d"), b->number); | |
3086aeae DJ |
5004 | say_where = 1; |
5005 | break; | |
5006 | case bp_hardware_breakpoint: | |
5007 | if (ui_out_is_mi_like_p (uiout)) | |
5008 | { | |
5009 | say_where = 0; | |
5010 | break; | |
5011 | } | |
a3f17187 | 5012 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); |
3086aeae DJ |
5013 | say_where = 1; |
5014 | break; | |
5015 | case bp_catch_load: | |
5016 | case bp_catch_unload: | |
a3f17187 | 5017 | printf_filtered (_("Catchpoint %d (%s %s)"), |
3086aeae DJ |
5018 | b->number, |
5019 | (b->type == bp_catch_load) ? "load" : "unload", | |
5020 | (b->dll_pathname != NULL) ? | |
5021 | b->dll_pathname : "<any library>"); | |
5022 | break; | |
5023 | case bp_catch_fork: | |
5024 | case bp_catch_vfork: | |
a3f17187 | 5025 | printf_filtered (_("Catchpoint %d (%s)"), |
3086aeae DJ |
5026 | b->number, |
5027 | (b->type == bp_catch_fork) ? "fork" : "vfork"); | |
5028 | break; | |
5029 | case bp_catch_exec: | |
a3f17187 | 5030 | printf_filtered (_("Catchpoint %d (exec)"), |
3086aeae DJ |
5031 | b->number); |
5032 | break; | |
3086aeae DJ |
5033 | |
5034 | case bp_until: | |
5035 | case bp_finish: | |
5036 | case bp_longjmp: | |
5037 | case bp_longjmp_resume: | |
5038 | case bp_step_resume: | |
3086aeae DJ |
5039 | case bp_call_dummy: |
5040 | case bp_watchpoint_scope: | |
5041 | case bp_shlib_event: | |
5042 | case bp_thread_event: | |
5043 | case bp_overlay_event: | |
5044 | break; | |
5045 | } | |
c906108c | 5046 | |
c906108c SS |
5047 | if (say_where) |
5048 | { | |
a3f17187 AC |
5049 | /* i18n: cagney/2005-02-11: Below needs to be merged into a |
5050 | single string. */ | |
0d381245 | 5051 | if (b->loc == NULL) |
c906108c | 5052 | { |
a3f17187 | 5053 | printf_filtered (_(" (%s) pending."), b->addr_string); |
0101ce28 JJ |
5054 | } |
5055 | else | |
5056 | { | |
5057 | if (addressprint || b->source_file == NULL) | |
5058 | { | |
5059 | printf_filtered (" at "); | |
ed49a04f | 5060 | fputs_filtered (paddress (b->loc->address), gdb_stdout); |
0101ce28 JJ |
5061 | } |
5062 | if (b->source_file) | |
5063 | printf_filtered (": file %s, line %d.", | |
5064 | b->source_file, b->line_number); | |
0d381245 VP |
5065 | |
5066 | if (b->loc->next) | |
5067 | { | |
5068 | struct bp_location *loc = b->loc; | |
5069 | int n = 0; | |
5070 | for (; loc; loc = loc->next) | |
5071 | ++n; | |
5072 | printf_filtered (" (%d locations)", n); | |
5073 | } | |
5074 | ||
c906108c | 5075 | } |
c906108c | 5076 | } |
8b93c638 | 5077 | do_cleanups (old_chain); |
9dc5e2a9 | 5078 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 5079 | return; |
c906108c SS |
5080 | printf_filtered ("\n"); |
5081 | } | |
c906108c | 5082 | \f |
c5aa993b | 5083 | |
0d381245 VP |
5084 | static struct bp_location * |
5085 | add_location_to_breakpoint (struct breakpoint *b, enum bptype bptype, | |
5086 | const struct symtab_and_line *sal) | |
5087 | { | |
5088 | struct bp_location *loc, **tmp; | |
5089 | ||
5090 | loc = allocate_bp_location (b, bptype); | |
5091 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
5092 | ; | |
5093 | *tmp = loc; | |
5094 | loc->requested_address = sal->pc; | |
5095 | loc->address = adjust_breakpoint_address (loc->requested_address, | |
5096 | bptype); | |
5097 | loc->section = sal->section; | |
5098 | ||
5099 | set_breakpoint_location_function (loc); | |
5100 | return loc; | |
5101 | } | |
514f746b AR |
5102 | \f |
5103 | ||
5104 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
5105 | return 0 otherwise. */ | |
5106 | ||
5107 | static int | |
5108 | bp_loc_is_permanent (struct bp_location *loc) | |
5109 | { | |
5110 | int len; | |
5111 | CORE_ADDR addr; | |
5112 | const gdb_byte *brk; | |
5113 | gdb_byte *target_mem; | |
5114 | ||
5115 | gdb_assert (loc != NULL); | |
5116 | ||
5117 | addr = loc->address; | |
5118 | brk = gdbarch_breakpoint_from_pc (current_gdbarch, &addr, &len); | |
5119 | ||
5120 | target_mem = alloca (len); | |
5121 | ||
5122 | if (target_read_memory (loc->address, target_mem, len) == 0 | |
5123 | && memcmp (target_mem, brk, len) == 0) | |
5124 | return 1; | |
5125 | ||
5126 | return 0; | |
5127 | } | |
5128 | ||
5129 | ||
c3f6f71d | 5130 | |
018d34a4 VP |
5131 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
5132 | as textual description of the location, and COND_STRING | |
db107f19 | 5133 | as condition expression. */ |
018d34a4 VP |
5134 | |
5135 | static void | |
0d381245 | 5136 | create_breakpoint (struct symtabs_and_lines sals, char *addr_string, |
018d34a4 VP |
5137 | char *cond_string, |
5138 | enum bptype type, enum bpdisp disposition, | |
604133b5 AR |
5139 | int thread, int ignore_count, |
5140 | struct breakpoint_ops *ops, int from_tty) | |
018d34a4 | 5141 | { |
0d381245 VP |
5142 | struct breakpoint *b = NULL; |
5143 | int i; | |
018d34a4 VP |
5144 | |
5145 | if (type == bp_hardware_breakpoint) | |
5146 | { | |
5147 | int i = hw_breakpoint_used_count (); | |
5148 | int target_resources_ok = | |
5149 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
5150 | i + 1, 0); | |
5151 | if (target_resources_ok == 0) | |
5152 | error (_("No hardware breakpoint support in the target.")); | |
5153 | else if (target_resources_ok < 0) | |
5154 | error (_("Hardware breakpoints used exceeds limit.")); | |
5155 | } | |
5156 | ||
0d381245 VP |
5157 | for (i = 0; i < sals.nelts; ++i) |
5158 | { | |
5159 | struct symtab_and_line sal = sals.sals[i]; | |
5160 | struct bp_location *loc; | |
5161 | ||
5162 | if (from_tty) | |
5163 | describe_other_breakpoints (sal.pc, sal.section, thread); | |
5164 | ||
5165 | if (i == 0) | |
5166 | { | |
5167 | b = set_raw_breakpoint (sal, type); | |
5168 | set_breakpoint_count (breakpoint_count + 1); | |
5169 | b->number = breakpoint_count; | |
5170 | b->thread = thread; | |
018d34a4 | 5171 | |
0d381245 VP |
5172 | b->cond_string = cond_string; |
5173 | b->ignore_count = ignore_count; | |
5174 | b->enable_state = bp_enabled; | |
5175 | b->disposition = disposition; | |
018d34a4 | 5176 | |
0d381245 VP |
5177 | loc = b->loc; |
5178 | } | |
5179 | else | |
018d34a4 | 5180 | { |
0d381245 VP |
5181 | loc = add_location_to_breakpoint (b, type, &sal); |
5182 | } | |
5183 | ||
514f746b AR |
5184 | if (bp_loc_is_permanent (loc)) |
5185 | make_breakpoint_permanent (b); | |
5186 | ||
0d381245 VP |
5187 | if (b->cond_string) |
5188 | { | |
5189 | char *arg = b->cond_string; | |
d32a6982 | 5190 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); |
0d381245 | 5191 | if (*arg) |
db107f19 | 5192 | error (_("Garbage %s follows condition"), arg); |
018d34a4 | 5193 | } |
0d381245 | 5194 | } |
018d34a4 VP |
5195 | |
5196 | if (addr_string) | |
5197 | b->addr_string = addr_string; | |
5198 | else | |
5199 | /* addr_string has to be used or breakpoint_re_set will delete | |
5200 | me. */ | |
5201 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); | |
5202 | ||
604133b5 | 5203 | b->ops = ops; |
018d34a4 VP |
5204 | mention (b); |
5205 | } | |
5206 | ||
ed0616c6 VP |
5207 | /* Remove element at INDEX_TO_REMOVE from SAL, shifting other |
5208 | elements to fill the void space. */ | |
5209 | static void remove_sal (struct symtabs_and_lines *sal, int index_to_remove) | |
5210 | { | |
5211 | int i = index_to_remove+1; | |
5212 | int last_index = sal->nelts-1; | |
5213 | ||
5214 | for (;i <= last_index; ++i) | |
5215 | sal->sals[i-1] = sal->sals[i]; | |
5216 | ||
5217 | --(sal->nelts); | |
5218 | } | |
5219 | ||
5220 | /* If appropriate, obtains all sals that correspond | |
5221 | to the same file and line as SAL. This is done | |
5222 | only if SAL does not have explicit PC and has | |
5223 | line and file information. If we got just a single | |
5224 | expanded sal, return the original. | |
5225 | ||
5226 | Otherwise, if SAL.explicit_line is not set, filter out | |
5227 | all sals for which the name of enclosing function | |
5228 | is different from SAL. This makes sure that if we have | |
5229 | breakpoint originally set in template instantiation, say | |
5230 | foo<int>(), we won't expand SAL to locations at the same | |
5231 | line in all existing instantiations of 'foo'. | |
5232 | ||
5233 | */ | |
5234 | struct symtabs_and_lines | |
5235 | expand_line_sal_maybe (struct symtab_and_line sal) | |
5236 | { | |
5237 | struct symtabs_and_lines expanded; | |
5238 | CORE_ADDR original_pc = sal.pc; | |
5239 | char *original_function = NULL; | |
5240 | int found; | |
5241 | int i; | |
5242 | ||
5243 | /* If we have explicit pc, don't expand. | |
5244 | If we have no line number, we can't expand. */ | |
5245 | if (sal.explicit_pc || sal.line == 0 || sal.symtab == NULL) | |
5246 | { | |
5247 | expanded.nelts = 1; | |
5248 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5249 | expanded.sals[0] = sal; | |
5250 | return expanded; | |
5251 | } | |
5252 | ||
5253 | sal.pc = 0; | |
5254 | find_pc_partial_function (original_pc, &original_function, NULL, NULL); | |
5255 | ||
5256 | expanded = expand_line_sal (sal); | |
5257 | if (expanded.nelts == 1) | |
5258 | { | |
5259 | /* We had one sal, we got one sal. Without futher | |
5260 | processing, just return the original sal. */ | |
5261 | xfree (expanded.sals); | |
5262 | expanded.nelts = 1; | |
5263 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5264 | sal.pc = original_pc; | |
5265 | expanded.sals[0] = sal; | |
5266 | return expanded; | |
5267 | } | |
5268 | ||
5269 | if (!sal.explicit_line) | |
5270 | { | |
5271 | CORE_ADDR func_addr, func_end; | |
5272 | for (i = 0; i < expanded.nelts; ++i) | |
5273 | { | |
5274 | CORE_ADDR pc = expanded.sals[i].pc; | |
5275 | char *this_function; | |
5276 | if (find_pc_partial_function (pc, &this_function, | |
5277 | &func_addr, &func_end)) | |
5278 | { | |
5279 | if (this_function && | |
5280 | strcmp (this_function, original_function) != 0) | |
5281 | { | |
5282 | remove_sal (&expanded, i); | |
5283 | --i; | |
5284 | } | |
5285 | else if (func_addr == pc) | |
5286 | { | |
5287 | /* We're at beginning of a function, and should | |
5288 | skip prologue. */ | |
5289 | struct symbol *sym = find_pc_function (pc); | |
5290 | if (sym) | |
5291 | expanded.sals[i] = find_function_start_sal (sym, 1); | |
5292 | else | |
5293 | expanded.sals[i].pc | |
5294 | = gdbarch_skip_prologue (current_gdbarch, pc); | |
5295 | } | |
5296 | } | |
5297 | } | |
5298 | } | |
5299 | ||
5300 | ||
5301 | if (expanded.nelts <= 1) | |
5302 | { | |
5303 | /* This is un ugly workaround. If we get zero | |
5304 | expanded sals then something is really wrong. | |
5305 | Fix that by returnign the original sal. */ | |
5306 | xfree (expanded.sals); | |
5307 | expanded.nelts = 1; | |
5308 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5309 | sal.pc = original_pc; | |
5310 | expanded.sals[0] = sal; | |
5311 | return expanded; | |
5312 | } | |
5313 | ||
5314 | if (original_pc) | |
5315 | { | |
5316 | found = 0; | |
5317 | for (i = 0; i < expanded.nelts; ++i) | |
5318 | if (expanded.sals[i].pc == original_pc) | |
5319 | { | |
5320 | found = 1; | |
5321 | break; | |
5322 | } | |
5323 | gdb_assert (found); | |
5324 | } | |
5325 | ||
5326 | return expanded; | |
5327 | } | |
5328 | ||
018d34a4 VP |
5329 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
5330 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
5331 | value. COND_STRING, if not NULL, specified the condition to be | |
5332 | used for all breakpoints. Essentially the only case where | |
5333 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
5334 | function. In that case, it's still not possible to specify | |
5335 | separate conditions for different overloaded functions, so | |
5336 | we take just a single condition string. | |
5337 | ||
c3f6f71d | 5338 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 5339 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
5340 | array contents). If the function fails (error() is called), the |
5341 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
5342 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
5343 | |
5344 | static void | |
c3f6f71d | 5345 | create_breakpoints (struct symtabs_and_lines sals, char **addr_string, |
018d34a4 | 5346 | char *cond_string, |
c3f6f71d | 5347 | enum bptype type, enum bpdisp disposition, |
604133b5 AR |
5348 | int thread, int ignore_count, |
5349 | struct breakpoint_ops *ops, int from_tty) | |
c906108c | 5350 | { |
018d34a4 VP |
5351 | int i; |
5352 | for (i = 0; i < sals.nelts; ++i) | |
c3f6f71d | 5353 | { |
ed0616c6 VP |
5354 | struct symtabs_and_lines expanded = |
5355 | expand_line_sal_maybe (sals.sals[i]); | |
0d381245 | 5356 | |
ed0616c6 | 5357 | create_breakpoint (expanded, addr_string[i], |
018d34a4 | 5358 | cond_string, type, disposition, |
604133b5 | 5359 | thread, ignore_count, ops, from_tty); |
c3f6f71d | 5360 | } |
74960c60 | 5361 | |
b60e7edf | 5362 | update_global_location_list (1); |
c3f6f71d | 5363 | } |
c906108c | 5364 | |
c3f6f71d JM |
5365 | /* Parse ARG which is assumed to be a SAL specification possibly |
5366 | followed by conditionals. On return, SALS contains an array of SAL | |
5367 | addresses found. ADDR_STRING contains a vector of (canonical) | |
5368 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 5369 | |
b9362cc7 | 5370 | static void |
c3f6f71d JM |
5371 | parse_breakpoint_sals (char **address, |
5372 | struct symtabs_and_lines *sals, | |
0101ce28 JJ |
5373 | char ***addr_string, |
5374 | int *not_found_ptr) | |
c3f6f71d JM |
5375 | { |
5376 | char *addr_start = *address; | |
5377 | *addr_string = NULL; | |
5378 | /* If no arg given, or if first arg is 'if ', use the default | |
5379 | breakpoint. */ | |
5380 | if ((*address) == NULL | |
5381 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
5382 | { |
5383 | if (default_breakpoint_valid) | |
5384 | { | |
c3f6f71d | 5385 | struct symtab_and_line sal; |
fe39c653 | 5386 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 5387 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
5388 | xmalloc (sizeof (struct symtab_and_line)); |
5389 | sal.pc = default_breakpoint_address; | |
5390 | sal.line = default_breakpoint_line; | |
5391 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 5392 | sal.section = find_pc_overlay (sal.pc); |
c3f6f71d JM |
5393 | sals->sals[0] = sal; |
5394 | sals->nelts = 1; | |
c906108c SS |
5395 | } |
5396 | else | |
8a3fe4f8 | 5397 | error (_("No default breakpoint address now.")); |
c906108c SS |
5398 | } |
5399 | else | |
5400 | { | |
c906108c | 5401 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
5402 | current_source_symtab (which is decode_line_1's default). This |
5403 | should produce the results we want almost all of the time while | |
1aeae86e AF |
5404 | leaving default_breakpoint_* alone. |
5405 | ObjC: However, don't match an Objective-C method name which | |
5406 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 5407 | |
c214a6fd | 5408 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 5409 | |
c906108c | 5410 | if (default_breakpoint_valid |
0378c332 | 5411 | && (!cursal.symtab |
1aeae86e AF |
5412 | || ((strchr ("+-", (*address)[0]) != NULL) |
5413 | && ((*address)[1] != '[')))) | |
c3f6f71d | 5414 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
0101ce28 JJ |
5415 | default_breakpoint_line, addr_string, |
5416 | not_found_ptr); | |
c906108c | 5417 | else |
0101ce28 JJ |
5418 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
5419 | addr_string, not_found_ptr); | |
c906108c | 5420 | } |
c3f6f71d JM |
5421 | /* For any SAL that didn't have a canonical string, fill one in. */ |
5422 | if (sals->nelts > 0 && *addr_string == NULL) | |
5423 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
5424 | if (addr_start != (*address)) | |
c906108c | 5425 | { |
c3f6f71d JM |
5426 | int i; |
5427 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 5428 | { |
c3f6f71d JM |
5429 | /* Add the string if not present. */ |
5430 | if ((*addr_string)[i] == NULL) | |
5431 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
5432 | } |
5433 | } | |
c3f6f71d | 5434 | } |
c906108c | 5435 | |
c906108c | 5436 | |
c3f6f71d JM |
5437 | /* Convert each SAL into a real PC. Verify that the PC can be |
5438 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 5439 | |
b9362cc7 | 5440 | static void |
c3f6f71d JM |
5441 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, |
5442 | char *address) | |
5443 | { | |
5444 | int i; | |
5445 | for (i = 0; i < sals->nelts; i++) | |
ee53e872 | 5446 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
5447 | } |
5448 | ||
05ff989b | 5449 | static void |
0101ce28 JJ |
5450 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) |
5451 | { | |
5452 | struct captured_parse_breakpoint_args *args = data; | |
5453 | ||
5454 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p, | |
5455 | args->not_found_ptr); | |
0101ce28 JJ |
5456 | } |
5457 | ||
018d34a4 VP |
5458 | /* Given TOK, a string specification of condition and thread, as |
5459 | accepted by the 'break' command, extract the condition | |
5460 | string and thread number and set *COND_STRING and *THREAD. | |
5461 | PC identifies the context at which the condition should be parsed. | |
5462 | If no condition is found, *COND_STRING is set to NULL. | |
5463 | If no thread is found, *THREAD is set to -1. */ | |
5464 | static void | |
5465 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
5466 | char **cond_string, int *thread) | |
5467 | { | |
5468 | *cond_string = NULL; | |
5469 | *thread = -1; | |
5470 | while (tok && *tok) | |
5471 | { | |
5472 | char *end_tok; | |
5473 | int toklen; | |
5474 | char *cond_start = NULL; | |
5475 | char *cond_end = NULL; | |
5476 | while (*tok == ' ' || *tok == '\t') | |
5477 | tok++; | |
5478 | ||
5479 | end_tok = tok; | |
5480 | ||
5481 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5482 | end_tok++; | |
5483 | ||
5484 | toklen = end_tok - tok; | |
5485 | ||
5486 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5487 | { | |
5488 | tok = cond_start = end_tok + 1; | |
5489 | parse_exp_1 (&tok, block_for_pc (pc), 0); | |
5490 | cond_end = tok; | |
5491 | *cond_string = savestring (cond_start, | |
5492 | cond_end - cond_start); | |
5493 | } | |
5494 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5495 | { | |
5496 | char *tmptok; | |
5497 | ||
5498 | tok = end_tok + 1; | |
5499 | tmptok = tok; | |
5500 | *thread = strtol (tok, &tok, 0); | |
5501 | if (tok == tmptok) | |
5502 | error (_("Junk after thread keyword.")); | |
5503 | if (!valid_thread_id (*thread)) | |
5504 | error (_("Unknown thread %d."), *thread); | |
5505 | } | |
5506 | else | |
5507 | error (_("Junk at end of arguments.")); | |
5508 | } | |
5509 | } | |
5510 | ||
72b2ff0e VP |
5511 | /* Set a breakpoint. This function is shared between |
5512 | CLI and MI functions for setting a breakpoint. | |
5513 | This function has two major modes of operations, | |
5514 | selected by the PARSE_CONDITION_AND_THREAD parameter. | |
5515 | If non-zero, the function will parse arg, extracting | |
5516 | breakpoint location, address and thread. Otherwise, | |
5517 | ARG is just the location of breakpoint, with condition | |
5518 | and thread specified by the COND_STRING and THREAD | |
5519 | parameters. */ | |
0101ce28 | 5520 | |
98deb0da | 5521 | static void |
72b2ff0e | 5522 | break_command_really (char *arg, char *cond_string, int thread, |
60c46647 VP |
5523 | int parse_condition_and_thread, |
5524 | int tempflag, int hardwareflag, | |
5525 | int ignore_count, | |
5526 | enum auto_boolean pending_break_support, | |
604133b5 | 5527 | struct breakpoint_ops *ops, |
60c46647 | 5528 | int from_tty) |
c3f6f71d | 5529 | { |
71fff37b | 5530 | struct gdb_exception e; |
c3f6f71d | 5531 | struct symtabs_and_lines sals; |
0101ce28 | 5532 | struct symtab_and_line pending_sal; |
0101ce28 JJ |
5533 | char *copy_arg; |
5534 | char *err_msg; | |
c3f6f71d JM |
5535 | char *addr_start = arg; |
5536 | char **addr_string; | |
5537 | struct cleanup *old_chain; | |
5538 | struct cleanup *breakpoint_chain = NULL; | |
0101ce28 | 5539 | struct captured_parse_breakpoint_args parse_args; |
05ff989b | 5540 | int i; |
0101ce28 | 5541 | int pending = 0; |
0101ce28 | 5542 | int not_found = 0; |
c3f6f71d | 5543 | |
c3f6f71d JM |
5544 | sals.sals = NULL; |
5545 | sals.nelts = 0; | |
5546 | addr_string = NULL; | |
c3f6f71d | 5547 | |
0101ce28 JJ |
5548 | parse_args.arg_p = &arg; |
5549 | parse_args.sals_p = &sals; | |
5550 | parse_args.addr_string_p = &addr_string; | |
5551 | parse_args.not_found_ptr = ¬_found; | |
5552 | ||
05ff989b AC |
5553 | e = catch_exception (uiout, do_captured_parse_breakpoint, |
5554 | &parse_args, RETURN_MASK_ALL); | |
0101ce28 JJ |
5555 | |
5556 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 5557 | switch (e.reason) |
0101ce28 | 5558 | { |
05ff989b | 5559 | case RETURN_QUIT: |
98deb0da | 5560 | throw_exception (e); |
05ff989b AC |
5561 | case RETURN_ERROR: |
5562 | switch (e.error) | |
0101ce28 | 5563 | { |
05ff989b | 5564 | case NOT_FOUND_ERROR: |
0101ce28 | 5565 | |
05ff989b AC |
5566 | /* If pending breakpoint support is turned off, throw |
5567 | error. */ | |
fa8d40ab JJ |
5568 | |
5569 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
5570 | throw_exception (e); |
5571 | ||
5572 | exception_print (gdb_stderr, e); | |
fa8d40ab | 5573 | |
05ff989b AC |
5574 | /* If pending breakpoint support is auto query and the user |
5575 | selects no, then simply return the error code. */ | |
fa8d40ab JJ |
5576 | if (pending_break_support == AUTO_BOOLEAN_AUTO && |
5577 | !nquery ("Make breakpoint pending on future shared library load? ")) | |
98deb0da | 5578 | return; |
fa8d40ab | 5579 | |
05ff989b AC |
5580 | /* At this point, either the user was queried about setting |
5581 | a pending breakpoint and selected yes, or pending | |
5582 | breakpoint behavior is on and thus a pending breakpoint | |
5583 | is defaulted on behalf of the user. */ | |
0101ce28 JJ |
5584 | copy_arg = xstrdup (addr_start); |
5585 | addr_string = ©_arg; | |
5586 | sals.nelts = 1; | |
5587 | sals.sals = &pending_sal; | |
5588 | pending_sal.pc = 0; | |
5589 | pending = 1; | |
05ff989b AC |
5590 | break; |
5591 | default: | |
98deb0da | 5592 | throw_exception (e); |
0101ce28 | 5593 | } |
05ff989b AC |
5594 | default: |
5595 | if (!sals.nelts) | |
98deb0da | 5596 | return; |
0101ce28 | 5597 | } |
c3f6f71d JM |
5598 | |
5599 | /* Create a chain of things that always need to be cleaned up. */ | |
5600 | old_chain = make_cleanup (null_cleanup, 0); | |
5601 | ||
0101ce28 JJ |
5602 | if (!pending) |
5603 | { | |
5604 | /* Make sure that all storage allocated to SALS gets freed. */ | |
5605 | make_cleanup (xfree, sals.sals); | |
5606 | ||
5607 | /* Cleanup the addr_string array but not its contents. */ | |
5608 | make_cleanup (xfree, addr_string); | |
5609 | } | |
c3f6f71d | 5610 | |
c3f6f71d JM |
5611 | /* ----------------------------- SNIP ----------------------------- |
5612 | Anything added to the cleanup chain beyond this point is assumed | |
5613 | to be part of a breakpoint. If the breakpoint create succeeds | |
5614 | then the memory is not reclaimed. */ | |
5615 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
5616 | ||
5617 | /* Mark the contents of the addr_string for cleanup. These go on | |
5618 | the breakpoint_chain and only occure if the breakpoint create | |
5619 | fails. */ | |
5620 | for (i = 0; i < sals.nelts; i++) | |
5621 | { | |
5622 | if (addr_string[i] != NULL) | |
b8c9b27d | 5623 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
5624 | } |
5625 | ||
5626 | /* Resolve all line numbers to PC's and verify that the addresses | |
5627 | are ok for the target. */ | |
0101ce28 JJ |
5628 | if (!pending) |
5629 | breakpoint_sals_to_pc (&sals, addr_start); | |
c3f6f71d JM |
5630 | |
5631 | /* Verify that condition can be parsed, before setting any | |
5632 | breakpoints. Allocate a separate condition expression for each | |
5633 | breakpoint. */ | |
0101ce28 | 5634 | if (!pending) |
c3f6f71d | 5635 | { |
2f069f6f | 5636 | if (parse_condition_and_thread) |
72b2ff0e VP |
5637 | { |
5638 | /* Here we only parse 'arg' to separate condition | |
5639 | from thread number, so parsing in context of first | |
5640 | sal is OK. When setting the breakpoint we'll | |
5641 | re-parse it in context of each sal. */ | |
5642 | cond_string = NULL; | |
5643 | thread = -1; | |
5644 | find_condition_and_thread (arg, sals.sals[0].pc, &cond_string, &thread); | |
5645 | if (cond_string) | |
5646 | make_cleanup (xfree, cond_string); | |
5647 | } | |
2f069f6f | 5648 | else |
72b2ff0e VP |
5649 | { |
5650 | /* Create a private copy of condition string. */ | |
5651 | if (cond_string) | |
5652 | { | |
5653 | cond_string = xstrdup (cond_string); | |
5654 | make_cleanup (xfree, cond_string); | |
5655 | } | |
5656 | } | |
018d34a4 | 5657 | create_breakpoints (sals, addr_string, cond_string, |
0101ce28 JJ |
5658 | hardwareflag ? bp_hardware_breakpoint |
5659 | : bp_breakpoint, | |
5660 | tempflag ? disp_del : disp_donttouch, | |
604133b5 | 5661 | thread, ignore_count, ops, from_tty); |
c906108c | 5662 | } |
0101ce28 JJ |
5663 | else |
5664 | { | |
fe3f5fa8 | 5665 | struct symtab_and_line sal = {0}; |
0101ce28 JJ |
5666 | struct breakpoint *b; |
5667 | ||
0101ce28 JJ |
5668 | make_cleanup (xfree, copy_arg); |
5669 | ||
0d381245 VP |
5670 | b = set_raw_breakpoint_without_location (hardwareflag |
5671 | ? bp_hardware_breakpoint | |
5672 | : bp_breakpoint); | |
0101ce28 JJ |
5673 | set_breakpoint_count (breakpoint_count + 1); |
5674 | b->number = breakpoint_count; | |
72b2ff0e | 5675 | b->thread = -1; |
018d34a4 | 5676 | b->addr_string = addr_string[0]; |
72b2ff0e | 5677 | b->cond_string = NULL; |
0101ce28 | 5678 | b->ignore_count = ignore_count; |
0101ce28 | 5679 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 5680 | b->condition_not_parsed = 1; |
604133b5 | 5681 | b->ops = ops; |
74960c60 | 5682 | |
b60e7edf | 5683 | update_global_location_list (1); |
0101ce28 JJ |
5684 | mention (b); |
5685 | } | |
5686 | ||
c3f6f71d | 5687 | if (sals.nelts > 1) |
8a3fe4f8 AC |
5688 | warning (_("Multiple breakpoints were set.\n" |
5689 | "Use the \"delete\" command to delete unwanted breakpoints.")); | |
c3f6f71d JM |
5690 | /* That's it. Discard the cleanups for data inserted into the |
5691 | breakpoint. */ | |
5692 | discard_cleanups (breakpoint_chain); | |
5693 | /* But cleanup everything else. */ | |
5694 | do_cleanups (old_chain); | |
5695 | } | |
c906108c | 5696 | |
72b2ff0e VP |
5697 | /* Set a breakpoint. |
5698 | ARG is a string describing breakpoint address, | |
5699 | condition, and thread. | |
5700 | FLAG specifies if a breakpoint is hardware on, | |
5701 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
5702 | and BP_TEMPFLAG. */ | |
5703 | ||
98deb0da | 5704 | static void |
72b2ff0e | 5705 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 5706 | { |
72b2ff0e VP |
5707 | int hardwareflag = flag & BP_HARDWAREFLAG; |
5708 | int tempflag = flag & BP_TEMPFLAG; | |
c3f6f71d | 5709 | |
98deb0da VP |
5710 | break_command_really (arg, |
5711 | NULL, 0, 1 /* parse arg */, | |
5712 | tempflag, hardwareflag, | |
5713 | 0 /* Ignore count */, | |
604133b5 AR |
5714 | pending_break_support, |
5715 | NULL /* breakpoint_ops */, | |
5716 | from_tty); | |
c906108c SS |
5717 | } |
5718 | ||
72b2ff0e | 5719 | |
98deb0da VP |
5720 | void |
5721 | set_breakpoint (char *address, char *condition, | |
c3f6f71d | 5722 | int hardwareflag, int tempflag, |
ce43223b | 5723 | int thread, int ignore_count, |
98deb0da | 5724 | int pending) |
c3f6f71d | 5725 | { |
98deb0da VP |
5726 | break_command_really (address, condition, thread, |
5727 | 0 /* condition and thread are valid. */, | |
5728 | tempflag, hardwareflag, | |
5729 | ignore_count, | |
5730 | pending | |
5731 | ? AUTO_BOOLEAN_TRUE : AUTO_BOOLEAN_FALSE, | |
604133b5 | 5732 | NULL, 0); |
c3f6f71d JM |
5733 | } |
5734 | ||
6a048695 JB |
5735 | /* Adjust SAL to the first instruction past the function prologue. |
5736 | The end of the prologue is determined using the line table from | |
5737 | the debugging information. | |
5738 | ||
5739 | If SAL is already past the prologue, then do nothing. */ | |
5740 | ||
5741 | static void | |
5742 | skip_prologue_sal (struct symtab_and_line *sal) | |
5743 | { | |
5744 | struct symbol *sym = find_pc_function (sal->pc); | |
5745 | struct symtab_and_line start_sal; | |
5746 | ||
5747 | if (sym == NULL) | |
5748 | return; | |
5749 | ||
5750 | start_sal = find_function_start_sal (sym, 1); | |
5751 | if (sal->pc < start_sal.pc) | |
5752 | *sal = start_sal; | |
5753 | } | |
c3f6f71d | 5754 | |
c906108c SS |
5755 | /* Helper function for break_command_1 and disassemble_command. */ |
5756 | ||
5757 | void | |
fba45db2 | 5758 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
5759 | { |
5760 | CORE_ADDR pc; | |
5761 | ||
5762 | if (sal->pc == 0 && sal->symtab != NULL) | |
5763 | { | |
5764 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 5765 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
5766 | sal->line, sal->symtab->filename); |
5767 | sal->pc = pc; | |
6a048695 JB |
5768 | |
5769 | /* If this SAL corresponds to a breakpoint inserted using | |
5770 | a line number, then skip the function prologue if necessary. */ | |
5771 | if (sal->explicit_line) | |
5772 | skip_prologue_sal (sal); | |
c906108c SS |
5773 | } |
5774 | ||
5775 | if (sal->section == 0 && sal->symtab != NULL) | |
5776 | { | |
5777 | struct blockvector *bv; | |
c5aa993b JM |
5778 | struct block *b; |
5779 | struct symbol *sym; | |
c906108c | 5780 | |
801e3a5b | 5781 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
5782 | if (bv != NULL) |
5783 | { | |
7f0df278 | 5784 | sym = block_linkage_function (b); |
c906108c SS |
5785 | if (sym != NULL) |
5786 | { | |
5787 | fixup_symbol_section (sym, sal->symtab->objfile); | |
714835d5 | 5788 | sal->section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
5789 | } |
5790 | else | |
5791 | { | |
5792 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
5793 | have to look harder. This case can be executed if we have |
5794 | line numbers but no functions (as can happen in assembly | |
5795 | source). */ | |
c906108c | 5796 | |
c5aa993b | 5797 | struct minimal_symbol *msym; |
c906108c SS |
5798 | |
5799 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
5800 | if (msym) | |
714835d5 | 5801 | sal->section = SYMBOL_OBJ_SECTION (msym); |
c906108c SS |
5802 | } |
5803 | } | |
5804 | } | |
5805 | } | |
5806 | ||
5807 | void | |
fba45db2 | 5808 | break_command (char *arg, int from_tty) |
c906108c | 5809 | { |
db107f19 | 5810 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
5811 | } |
5812 | ||
c906108c | 5813 | void |
fba45db2 | 5814 | tbreak_command (char *arg, int from_tty) |
c906108c | 5815 | { |
db107f19 | 5816 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
5817 | } |
5818 | ||
c906108c | 5819 | static void |
fba45db2 | 5820 | hbreak_command (char *arg, int from_tty) |
c906108c | 5821 | { |
db107f19 | 5822 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
5823 | } |
5824 | ||
5825 | static void | |
fba45db2 | 5826 | thbreak_command (char *arg, int from_tty) |
c906108c | 5827 | { |
db107f19 | 5828 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
5829 | } |
5830 | ||
5831 | static void | |
fba45db2 | 5832 | stop_command (char *arg, int from_tty) |
c906108c | 5833 | { |
a3f17187 | 5834 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 5835 | Usage: stop in <function | address>\n\ |
a3f17187 | 5836 | stop at <line>\n")); |
c906108c SS |
5837 | } |
5838 | ||
5839 | static void | |
fba45db2 | 5840 | stopin_command (char *arg, int from_tty) |
c906108c SS |
5841 | { |
5842 | int badInput = 0; | |
5843 | ||
c5aa993b | 5844 | if (arg == (char *) NULL) |
c906108c SS |
5845 | badInput = 1; |
5846 | else if (*arg != '*') | |
5847 | { | |
5848 | char *argptr = arg; | |
5849 | int hasColon = 0; | |
5850 | ||
53a5351d JM |
5851 | /* look for a ':'. If this is a line number specification, then |
5852 | say it is bad, otherwise, it should be an address or | |
5853 | function/method name */ | |
c906108c | 5854 | while (*argptr && !hasColon) |
c5aa993b JM |
5855 | { |
5856 | hasColon = (*argptr == ':'); | |
5857 | argptr++; | |
5858 | } | |
c906108c SS |
5859 | |
5860 | if (hasColon) | |
c5aa993b | 5861 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 5862 | else |
c5aa993b | 5863 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
5864 | } |
5865 | ||
5866 | if (badInput) | |
a3f17187 | 5867 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 5868 | else |
db107f19 | 5869 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
5870 | } |
5871 | ||
5872 | static void | |
fba45db2 | 5873 | stopat_command (char *arg, int from_tty) |
c906108c SS |
5874 | { |
5875 | int badInput = 0; | |
5876 | ||
c5aa993b | 5877 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
5878 | badInput = 1; |
5879 | else | |
5880 | { | |
5881 | char *argptr = arg; | |
5882 | int hasColon = 0; | |
5883 | ||
5884 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 5885 | it is probably a line number. */ |
c906108c | 5886 | while (*argptr && !hasColon) |
c5aa993b JM |
5887 | { |
5888 | hasColon = (*argptr == ':'); | |
5889 | argptr++; | |
5890 | } | |
c906108c SS |
5891 | |
5892 | if (hasColon) | |
c5aa993b | 5893 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 5894 | else |
c5aa993b | 5895 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
5896 | } |
5897 | ||
5898 | if (badInput) | |
a3f17187 | 5899 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 5900 | else |
db107f19 | 5901 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
5902 | } |
5903 | ||
53a5351d JM |
5904 | /* accessflag: hw_write: watch write, |
5905 | hw_read: watch read, | |
5906 | hw_access: watch access (read or write) */ | |
c906108c | 5907 | static void |
fba45db2 | 5908 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c | 5909 | { |
d983da9c | 5910 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c SS |
5911 | struct symtab_and_line sal; |
5912 | struct expression *exp; | |
5913 | struct block *exp_valid_block; | |
5914 | struct value *val, *mark; | |
5915 | struct frame_info *frame; | |
5916 | struct frame_info *prev_frame = NULL; | |
5917 | char *exp_start = NULL; | |
5918 | char *exp_end = NULL; | |
37e4754d | 5919 | char *tok, *id_tok_start, *end_tok; |
c906108c SS |
5920 | int toklen; |
5921 | char *cond_start = NULL; | |
5922 | char *cond_end = NULL; | |
5923 | struct expression *cond = NULL; | |
5924 | int i, other_type_used, target_resources_ok = 0; | |
5925 | enum bptype bp_type; | |
5926 | int mem_cnt = 0; | |
37e4754d | 5927 | int thread = -1; |
c906108c | 5928 | |
fe39c653 | 5929 | init_sal (&sal); /* initialize to zeroes */ |
c5aa993b | 5930 | |
37e4754d LM |
5931 | /* Make sure that we actually have parameters to parse. */ |
5932 | if (arg != NULL && arg[0] != '\0') | |
5933 | { | |
5934 | toklen = strlen (arg); /* Size of argument list. */ | |
5935 | ||
5936 | /* Points tok to the end of the argument list. */ | |
5937 | tok = arg + toklen - 1; | |
5938 | ||
5939 | /* Go backwards in the parameters list. Skip the last parameter. | |
5940 | If we're expecting a 'thread <thread_num>' parameter, this should | |
5941 | be the thread identifier. */ | |
5942 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
5943 | tok--; | |
5944 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
5945 | tok--; | |
5946 | ||
5947 | /* Points end_tok to the beginning of the last token. */ | |
5948 | id_tok_start = tok + 1; | |
5949 | ||
5950 | /* Go backwards in the parameters list. Skip one more parameter. | |
5951 | If we're expecting a 'thread <thread_num>' parameter, we should | |
5952 | reach a "thread" token. */ | |
5953 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
5954 | tok--; | |
5955 | ||
5956 | end_tok = tok; | |
5957 | ||
5958 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
5959 | tok--; | |
5960 | ||
5961 | /* Move the pointer forward to skip the whitespace and | |
5962 | calculate the length of the token. */ | |
5963 | tok++; | |
5964 | toklen = end_tok - tok; | |
5965 | ||
5966 | if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5967 | { | |
5968 | /* At this point we've found a "thread" token, which means | |
5969 | the user is trying to set a watchpoint that triggers | |
5970 | only in a specific thread. */ | |
5971 | char *endp; | |
5972 | ||
5973 | /* Extract the thread ID from the next token. */ | |
5974 | thread = strtol (id_tok_start, &endp, 0); | |
5975 | ||
5976 | /* Check if the user provided a valid numeric value for the | |
5977 | thread ID. */ | |
5978 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
5979 | error (_("Invalid thread ID specification %s."), id_tok_start); | |
5980 | ||
5981 | /* Check if the thread actually exists. */ | |
5982 | if (!valid_thread_id (thread)) | |
5983 | error (_("Unknown thread %d."), thread); | |
5984 | ||
5985 | /* Truncate the string and get rid of the thread <thread_num> | |
5986 | parameter before the parameter list is parsed by the | |
5987 | evaluate_expression() function. */ | |
5988 | *tok = '\0'; | |
5989 | } | |
5990 | } | |
5991 | ||
5992 | /* Parse the rest of the arguments. */ | |
c906108c SS |
5993 | innermost_block = NULL; |
5994 | exp_start = arg; | |
5995 | exp = parse_exp_1 (&arg, 0, 0); | |
5996 | exp_end = arg; | |
5997 | exp_valid_block = innermost_block; | |
5998 | mark = value_mark (); | |
fa4727a6 DJ |
5999 | fetch_watchpoint_value (exp, &val, NULL, NULL); |
6000 | if (val != NULL) | |
6001 | release_value (val); | |
c906108c SS |
6002 | |
6003 | tok = arg; | |
6004 | while (*tok == ' ' || *tok == '\t') | |
6005 | tok++; | |
6006 | end_tok = tok; | |
6007 | ||
6008 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
6009 | end_tok++; | |
6010 | ||
6011 | toklen = end_tok - tok; | |
6012 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
6013 | { | |
6014 | tok = cond_start = end_tok + 1; | |
6015 | cond = parse_exp_1 (&tok, 0, 0); | |
6016 | cond_end = tok; | |
6017 | } | |
6018 | if (*tok) | |
8a3fe4f8 | 6019 | error (_("Junk at end of command.")); |
c906108c | 6020 | |
53a5351d | 6021 | if (accessflag == hw_read) |
c5aa993b | 6022 | bp_type = bp_read_watchpoint; |
53a5351d | 6023 | else if (accessflag == hw_access) |
c5aa993b JM |
6024 | bp_type = bp_access_watchpoint; |
6025 | else | |
6026 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
6027 | |
6028 | mem_cnt = can_use_hardware_watchpoint (val); | |
6029 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
8a3fe4f8 | 6030 | error (_("Expression cannot be implemented with read/access watchpoint.")); |
c5aa993b JM |
6031 | if (mem_cnt != 0) |
6032 | { | |
6033 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d JM |
6034 | target_resources_ok = |
6035 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type, i + mem_cnt, | |
6036 | other_type_used); | |
c5aa993b | 6037 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 6038 | error (_("Target does not support this type of hardware watchpoint.")); |
53a5351d | 6039 | |
c5aa993b | 6040 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 6041 | error (_("Target can only support one kind of HW watchpoint at a time.")); |
c5aa993b | 6042 | } |
c906108c | 6043 | |
4d28f7a8 KB |
6044 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
6045 | watchpoint could not be set. */ | |
6046 | if (!mem_cnt || target_resources_ok <= 0) | |
6047 | bp_type = bp_watchpoint; | |
6048 | ||
d983da9c DJ |
6049 | frame = block_innermost_frame (exp_valid_block); |
6050 | if (frame) | |
6051 | prev_frame = get_prev_frame (frame); | |
6052 | else | |
6053 | prev_frame = NULL; | |
6054 | ||
6055 | /* If the expression is "local", then set up a "watchpoint scope" | |
6056 | breakpoint at the point where we've left the scope of the watchpoint | |
6057 | expression. Create the scope breakpoint before the watchpoint, so | |
6058 | that we will encounter it first in bpstat_stop_status. */ | |
6059 | if (innermost_block && prev_frame) | |
6060 | { | |
6061 | scope_breakpoint = create_internal_breakpoint (get_frame_pc (prev_frame), | |
6062 | bp_watchpoint_scope); | |
6063 | ||
6064 | scope_breakpoint->enable_state = bp_enabled; | |
6065 | ||
6066 | /* Automatically delete the breakpoint when it hits. */ | |
6067 | scope_breakpoint->disposition = disp_del; | |
6068 | ||
6069 | /* Only break in the proper frame (help with recursion). */ | |
6070 | scope_breakpoint->frame_id = get_frame_id (prev_frame); | |
6071 | ||
6072 | /* Set the address at which we will stop. */ | |
6073 | scope_breakpoint->loc->requested_address | |
6074 | = get_frame_pc (prev_frame); | |
6075 | scope_breakpoint->loc->address | |
6076 | = adjust_breakpoint_address (scope_breakpoint->loc->requested_address, | |
6077 | scope_breakpoint->type); | |
6078 | } | |
6079 | ||
c906108c | 6080 | /* Now set up the breakpoint. */ |
4d28f7a8 | 6081 | b = set_raw_breakpoint (sal, bp_type); |
c906108c SS |
6082 | set_breakpoint_count (breakpoint_count + 1); |
6083 | b->number = breakpoint_count; | |
37e4754d | 6084 | b->thread = thread; |
b5de0fa7 | 6085 | b->disposition = disp_donttouch; |
c906108c SS |
6086 | b->exp = exp; |
6087 | b->exp_valid_block = exp_valid_block; | |
6088 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
6089 | b->val = val; | |
fa4727a6 | 6090 | b->val_valid = 1; |
511a6cd4 | 6091 | b->loc->cond = cond; |
c906108c SS |
6092 | if (cond_start) |
6093 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
6094 | else | |
6095 | b->cond_string = 0; | |
c5aa993b | 6096 | |
c906108c | 6097 | if (frame) |
d983da9c | 6098 | b->watchpoint_frame = get_frame_id (frame); |
c906108c | 6099 | else |
35a487f1 | 6100 | b->watchpoint_frame = null_frame_id; |
c906108c | 6101 | |
d983da9c | 6102 | if (scope_breakpoint != NULL) |
c906108c | 6103 | { |
d983da9c DJ |
6104 | /* The scope breakpoint is related to the watchpoint. We will |
6105 | need to act on them together. */ | |
6106 | b->related_breakpoint = scope_breakpoint; | |
6107 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 6108 | } |
d983da9c | 6109 | |
c906108c SS |
6110 | value_free_to_mark (mark); |
6111 | mention (b); | |
b60e7edf | 6112 | update_global_location_list (1); |
c906108c SS |
6113 | } |
6114 | ||
6115 | /* Return count of locations need to be watched and can be handled | |
6116 | in hardware. If the watchpoint can not be handled | |
6117 | in hardware return zero. */ | |
6118 | ||
c906108c | 6119 | static int |
fba45db2 | 6120 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
6121 | { |
6122 | int found_memory_cnt = 0; | |
2e70b7b9 | 6123 | struct value *head = v; |
c906108c SS |
6124 | |
6125 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 6126 | if (!can_use_hw_watchpoints) |
c906108c | 6127 | return 0; |
c5aa993b | 6128 | |
5c44784c JM |
6129 | /* Make sure that the value of the expression depends only upon |
6130 | memory contents, and values computed from them within GDB. If we | |
6131 | find any register references or function calls, we can't use a | |
6132 | hardware watchpoint. | |
6133 | ||
6134 | The idea here is that evaluating an expression generates a series | |
6135 | of values, one holding the value of every subexpression. (The | |
6136 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
6137 | a*b+c.) GDB's values hold almost enough information to establish | |
6138 | the criteria given above --- they identify memory lvalues, | |
6139 | register lvalues, computed values, etcetera. So we can evaluate | |
6140 | the expression, and then scan the chain of values that leaves | |
6141 | behind to decide whether we can detect any possible change to the | |
6142 | expression's final value using only hardware watchpoints. | |
6143 | ||
6144 | However, I don't think that the values returned by inferior | |
6145 | function calls are special in any way. So this function may not | |
6146 | notice that an expression involving an inferior function call | |
6147 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 6148 | for (; v; v = value_next (v)) |
c906108c | 6149 | { |
5c44784c | 6150 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 6151 | { |
d69fe07e | 6152 | if (value_lazy (v)) |
5c44784c JM |
6153 | /* A lazy memory lvalue is one that GDB never needed to fetch; |
6154 | we either just used its address (e.g., `a' in `a.b') or | |
6155 | we never needed it at all (e.g., `a' in `a,b'). */ | |
6156 | ; | |
53a5351d | 6157 | else |
5c44784c JM |
6158 | { |
6159 | /* Ahh, memory we actually used! Check if we can cover | |
6160 | it with hardware watchpoints. */ | |
df407dfe | 6161 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
6162 | |
6163 | /* We only watch structs and arrays if user asked for it | |
6164 | explicitly, never if they just happen to appear in a | |
6165 | middle of some value chain. */ | |
6166 | if (v == head | |
6167 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
6168 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
6169 | { | |
df407dfe AC |
6170 | CORE_ADDR vaddr = VALUE_ADDRESS (v) + value_offset (v); |
6171 | int len = TYPE_LENGTH (value_type (v)); | |
2e70b7b9 MS |
6172 | |
6173 | if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len)) | |
6174 | return 0; | |
6175 | else | |
6176 | found_memory_cnt++; | |
6177 | } | |
5c44784c | 6178 | } |
c5aa993b | 6179 | } |
5086187c AC |
6180 | else if (VALUE_LVAL (v) != not_lval |
6181 | && deprecated_value_modifiable (v) == 0) | |
53a5351d | 6182 | return 0; /* ??? What does this represent? */ |
5086187c | 6183 | else if (VALUE_LVAL (v) == lval_register) |
53a5351d | 6184 | return 0; /* cannot watch a register with a HW watchpoint */ |
c906108c SS |
6185 | } |
6186 | ||
6187 | /* The expression itself looks suitable for using a hardware | |
6188 | watchpoint, but give the target machine a chance to reject it. */ | |
6189 | return found_memory_cnt; | |
6190 | } | |
6191 | ||
8b93c638 | 6192 | void |
fba45db2 | 6193 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6194 | { |
6195 | watch_command (arg, from_tty); | |
6196 | } | |
8926118c | 6197 | |
c5aa993b | 6198 | static void |
fba45db2 | 6199 | watch_command (char *arg, int from_tty) |
c906108c | 6200 | { |
53a5351d | 6201 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
6202 | } |
6203 | ||
8b93c638 | 6204 | void |
fba45db2 | 6205 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6206 | { |
6207 | rwatch_command (arg, from_tty); | |
6208 | } | |
8926118c | 6209 | |
c5aa993b | 6210 | static void |
fba45db2 | 6211 | rwatch_command (char *arg, int from_tty) |
c906108c | 6212 | { |
53a5351d | 6213 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
6214 | } |
6215 | ||
8b93c638 | 6216 | void |
fba45db2 | 6217 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6218 | { |
6219 | awatch_command (arg, from_tty); | |
6220 | } | |
8926118c | 6221 | |
c5aa993b | 6222 | static void |
fba45db2 | 6223 | awatch_command (char *arg, int from_tty) |
c906108c | 6224 | { |
53a5351d | 6225 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 6226 | } |
c906108c | 6227 | \f |
c5aa993b | 6228 | |
43ff13b4 | 6229 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
6230 | because it uses the mechanisms of breakpoints. */ |
6231 | ||
bfec99b2 PA |
6232 | struct until_break_command_continuation_args |
6233 | { | |
6234 | struct breakpoint *breakpoint; | |
6235 | struct breakpoint *breakpoint2; | |
6236 | }; | |
6237 | ||
43ff13b4 JM |
6238 | /* This function is called by fetch_inferior_event via the |
6239 | cmd_continuation pointer, to complete the until command. It takes | |
6240 | care of cleaning up the temporary breakpoints set up by the until | |
6241 | command. */ | |
c2c6d25f | 6242 | static void |
604ead4a | 6243 | until_break_command_continuation (void *arg) |
43ff13b4 | 6244 | { |
bfec99b2 PA |
6245 | struct until_break_command_continuation_args *a = arg; |
6246 | ||
6247 | delete_breakpoint (a->breakpoint); | |
6248 | if (a->breakpoint2) | |
6249 | delete_breakpoint (a->breakpoint2); | |
43ff13b4 JM |
6250 | } |
6251 | ||
c906108c | 6252 | void |
ae66c1fc | 6253 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
6254 | { |
6255 | struct symtabs_and_lines sals; | |
6256 | struct symtab_and_line sal; | |
206415a3 DJ |
6257 | struct frame_info *frame = get_selected_frame (NULL); |
6258 | struct frame_info *prev_frame = get_prev_frame (frame); | |
c906108c | 6259 | struct breakpoint *breakpoint; |
f107f563 | 6260 | struct breakpoint *breakpoint2 = NULL; |
c906108c SS |
6261 | struct cleanup *old_chain; |
6262 | ||
6263 | clear_proceed_status (); | |
6264 | ||
6265 | /* Set a breakpoint where the user wants it and at return from | |
6266 | this function */ | |
c5aa993b | 6267 | |
c906108c SS |
6268 | if (default_breakpoint_valid) |
6269 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 6270 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 6271 | else |
53a5351d | 6272 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 6273 | 0, (char ***) NULL, NULL); |
c5aa993b | 6274 | |
c906108c | 6275 | if (sals.nelts != 1) |
8a3fe4f8 | 6276 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 6277 | |
c906108c | 6278 | sal = sals.sals[0]; |
b8c9b27d | 6279 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 6280 | |
c906108c | 6281 | if (*arg) |
8a3fe4f8 | 6282 | error (_("Junk at end of arguments.")); |
c5aa993b | 6283 | |
c906108c | 6284 | resolve_sal_pc (&sal); |
c5aa993b | 6285 | |
ae66c1fc EZ |
6286 | if (anywhere) |
6287 | /* If the user told us to continue until a specified location, | |
6288 | we don't specify a frame at which we need to stop. */ | |
6289 | breakpoint = set_momentary_breakpoint (sal, null_frame_id, bp_until); | |
6290 | else | |
6291 | /* Otherwise, specify the current frame, because we want to stop only | |
6292 | at the very same frame. */ | |
206415a3 | 6293 | breakpoint = set_momentary_breakpoint (sal, get_frame_id (frame), |
ae66c1fc | 6294 | bp_until); |
c5aa993b | 6295 | |
f107f563 | 6296 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
c906108c | 6297 | |
ae66c1fc EZ |
6298 | /* Keep within the current frame, or in frames called by the current |
6299 | one. */ | |
c906108c SS |
6300 | if (prev_frame) |
6301 | { | |
30f7db39 AC |
6302 | sal = find_pc_line (get_frame_pc (prev_frame), 0); |
6303 | sal.pc = get_frame_pc (prev_frame); | |
f107f563 VP |
6304 | breakpoint2 = set_momentary_breakpoint (sal, get_frame_id (prev_frame), |
6305 | bp_until); | |
6306 | make_cleanup_delete_breakpoint (breakpoint2); | |
c906108c | 6307 | } |
c5aa993b | 6308 | |
c906108c | 6309 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
f107f563 VP |
6310 | |
6311 | /* If we are running asynchronously, and proceed call above has actually | |
6312 | managed to start the target, arrange for breakpoints to be | |
6313 | deleted when the target stops. Otherwise, we're already stopped and | |
6314 | delete breakpoints via cleanup chain. */ | |
6315 | ||
8ea051c5 | 6316 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 6317 | { |
bfec99b2 PA |
6318 | struct until_break_command_continuation_args *args; |
6319 | args = xmalloc (sizeof (*args)); | |
f107f563 | 6320 | |
bfec99b2 PA |
6321 | args->breakpoint = breakpoint; |
6322 | args->breakpoint2 = breakpoint2; | |
f107f563 VP |
6323 | |
6324 | discard_cleanups (old_chain); | |
95e54da7 PA |
6325 | add_continuation (inferior_thread (), |
6326 | until_break_command_continuation, args, | |
604ead4a | 6327 | xfree); |
f107f563 VP |
6328 | } |
6329 | else | |
c5aa993b | 6330 | do_cleanups (old_chain); |
c906108c | 6331 | } |
ae66c1fc | 6332 | |
c906108c | 6333 | static void |
fba45db2 | 6334 | ep_skip_leading_whitespace (char **s) |
c906108c | 6335 | { |
c5aa993b JM |
6336 | if ((s == NULL) || (*s == NULL)) |
6337 | return; | |
6338 | while (isspace (**s)) | |
6339 | *s += 1; | |
c906108c | 6340 | } |
c5aa993b | 6341 | |
c906108c SS |
6342 | /* This function attempts to parse an optional "if <cond>" clause |
6343 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 6344 | |
c906108c SS |
6345 | Else, it returns a pointer to the condition string. (It does not |
6346 | attempt to evaluate the string against a particular block.) And, | |
6347 | it updates arg to point to the first character following the parsed | |
6348 | if clause in the arg string. */ | |
53a5351d | 6349 | |
c906108c | 6350 | static char * |
fba45db2 | 6351 | ep_parse_optional_if_clause (char **arg) |
c906108c | 6352 | { |
c5aa993b JM |
6353 | char *cond_string; |
6354 | ||
6355 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 6356 | return NULL; |
c5aa993b | 6357 | |
c906108c SS |
6358 | /* Skip the "if" keyword. */ |
6359 | (*arg) += 2; | |
c5aa993b | 6360 | |
c906108c SS |
6361 | /* Skip any extra leading whitespace, and record the start of the |
6362 | condition string. */ | |
6363 | ep_skip_leading_whitespace (arg); | |
6364 | cond_string = *arg; | |
c5aa993b | 6365 | |
c906108c SS |
6366 | /* Assume that the condition occupies the remainder of the arg string. */ |
6367 | (*arg) += strlen (cond_string); | |
c5aa993b | 6368 | |
c906108c SS |
6369 | return cond_string; |
6370 | } | |
c5aa993b | 6371 | |
c906108c SS |
6372 | /* This function attempts to parse an optional filename from the arg |
6373 | string. If one is not found, it returns NULL. | |
c5aa993b | 6374 | |
c906108c SS |
6375 | Else, it returns a pointer to the parsed filename. (This function |
6376 | makes no attempt to verify that a file of that name exists, or is | |
6377 | accessible.) And, it updates arg to point to the first character | |
6378 | following the parsed filename in the arg string. | |
c5aa993b | 6379 | |
c906108c SS |
6380 | Note that clients needing to preserve the returned filename for |
6381 | future access should copy it to their own buffers. */ | |
6382 | static char * | |
fba45db2 | 6383 | ep_parse_optional_filename (char **arg) |
c906108c | 6384 | { |
c5aa993b JM |
6385 | static char filename[1024]; |
6386 | char *arg_p = *arg; | |
6387 | int i; | |
6388 | char c; | |
6389 | ||
c906108c SS |
6390 | if ((*arg_p == '\0') || isspace (*arg_p)) |
6391 | return NULL; | |
c5aa993b JM |
6392 | |
6393 | for (i = 0;; i++) | |
c906108c SS |
6394 | { |
6395 | c = *arg_p; | |
6396 | if (isspace (c)) | |
c5aa993b | 6397 | c = '\0'; |
c906108c SS |
6398 | filename[i] = c; |
6399 | if (c == '\0') | |
c5aa993b | 6400 | break; |
c906108c SS |
6401 | arg_p++; |
6402 | } | |
6403 | *arg = arg_p; | |
c5aa993b | 6404 | |
c906108c SS |
6405 | return filename; |
6406 | } | |
c5aa993b | 6407 | |
c906108c SS |
6408 | /* Commands to deal with catching events, such as signals, exceptions, |
6409 | process start/exit, etc. */ | |
c5aa993b JM |
6410 | |
6411 | typedef enum | |
6412 | { | |
44feb3ce TT |
6413 | catch_fork_temporary, catch_vfork_temporary, |
6414 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
6415 | } |
6416 | catch_fork_kind; | |
6417 | ||
c906108c | 6418 | static void |
44feb3ce | 6419 | catch_fork_command_1 (char *arg, int from_tty, struct cmd_list_element *command) |
c906108c | 6420 | { |
c5aa993b | 6421 | char *cond_string = NULL; |
44feb3ce TT |
6422 | catch_fork_kind fork_kind; |
6423 | int tempflag; | |
6424 | ||
6425 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
6426 | tempflag = (fork_kind == catch_fork_temporary | |
6427 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 6428 | |
44feb3ce TT |
6429 | if (!arg) |
6430 | arg = ""; | |
c906108c | 6431 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6432 | |
c906108c | 6433 | /* The allowed syntax is: |
c5aa993b JM |
6434 | catch [v]fork |
6435 | catch [v]fork if <cond> | |
6436 | ||
c906108c SS |
6437 | First, check if there's an if clause. */ |
6438 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6439 | |
c906108c | 6440 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6441 | error (_("Junk at end of arguments.")); |
c5aa993b | 6442 | |
c906108c SS |
6443 | /* If this target supports it, create a fork or vfork catchpoint |
6444 | and enable reporting of such events. */ | |
c5aa993b JM |
6445 | switch (fork_kind) |
6446 | { | |
44feb3ce TT |
6447 | case catch_fork_temporary: |
6448 | case catch_fork_permanent: | |
c906108c SS |
6449 | create_fork_event_catchpoint (tempflag, cond_string); |
6450 | break; | |
44feb3ce TT |
6451 | case catch_vfork_temporary: |
6452 | case catch_vfork_permanent: | |
c906108c SS |
6453 | create_vfork_event_catchpoint (tempflag, cond_string); |
6454 | break; | |
c5aa993b | 6455 | default: |
8a3fe4f8 | 6456 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 6457 | break; |
c5aa993b | 6458 | } |
c906108c SS |
6459 | } |
6460 | ||
6461 | static void | |
44feb3ce | 6462 | catch_exec_command_1 (char *arg, int from_tty, struct cmd_list_element *command) |
c906108c | 6463 | { |
44feb3ce | 6464 | int tempflag; |
c5aa993b | 6465 | char *cond_string = NULL; |
c906108c | 6466 | |
44feb3ce TT |
6467 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
6468 | ||
6469 | if (!arg) | |
6470 | arg = ""; | |
c906108c SS |
6471 | ep_skip_leading_whitespace (&arg); |
6472 | ||
6473 | /* The allowed syntax is: | |
c5aa993b JM |
6474 | catch exec |
6475 | catch exec if <cond> | |
c906108c SS |
6476 | |
6477 | First, check if there's an if clause. */ | |
6478 | cond_string = ep_parse_optional_if_clause (&arg); | |
6479 | ||
6480 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6481 | error (_("Junk at end of arguments.")); |
c906108c SS |
6482 | |
6483 | /* If this target supports it, create an exec catchpoint | |
6484 | and enable reporting of such events. */ | |
6485 | create_exec_event_catchpoint (tempflag, cond_string); | |
6486 | } | |
c5aa993b | 6487 | |
c906108c | 6488 | static void |
44feb3ce | 6489 | catch_load_command_1 (char *arg, int from_tty, struct cmd_list_element *command) |
c906108c | 6490 | { |
44feb3ce | 6491 | int tempflag; |
c5aa993b JM |
6492 | char *dll_pathname = NULL; |
6493 | char *cond_string = NULL; | |
6494 | ||
44feb3ce TT |
6495 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
6496 | ||
6497 | if (!arg) | |
6498 | arg = ""; | |
c906108c | 6499 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6500 | |
c906108c | 6501 | /* The allowed syntax is: |
c5aa993b JM |
6502 | catch load |
6503 | catch load if <cond> | |
6504 | catch load <filename> | |
6505 | catch load <filename> if <cond> | |
6506 | ||
c906108c SS |
6507 | The user is not allowed to specify the <filename> after an |
6508 | if clause. | |
c5aa993b | 6509 | |
c906108c | 6510 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6511 | |
c906108c SS |
6512 | First, check if there's an if clause. If so, then there |
6513 | cannot be a filename. */ | |
6514 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6515 | |
c906108c SS |
6516 | /* If there was an if clause, then there cannot be a filename. |
6517 | Else, there might be a filename and an if clause. */ | |
6518 | if (cond_string == NULL) | |
6519 | { | |
6520 | dll_pathname = ep_parse_optional_filename (&arg); | |
6521 | ep_skip_leading_whitespace (&arg); | |
6522 | cond_string = ep_parse_optional_if_clause (&arg); | |
6523 | } | |
c5aa993b | 6524 | |
c906108c | 6525 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6526 | error (_("Junk at end of arguments.")); |
c5aa993b | 6527 | |
c906108c SS |
6528 | /* Create a load breakpoint that only triggers when a load of |
6529 | the specified dll (or any dll, if no pathname was specified) | |
6530 | occurs. */ | |
39f77062 | 6531 | SOLIB_CREATE_CATCH_LOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6532 | dll_pathname, cond_string); |
c906108c | 6533 | } |
c5aa993b | 6534 | |
c906108c | 6535 | static void |
44feb3ce TT |
6536 | catch_unload_command_1 (char *arg, int from_tty, |
6537 | struct cmd_list_element *command) | |
c906108c | 6538 | { |
44feb3ce | 6539 | int tempflag; |
c5aa993b JM |
6540 | char *dll_pathname = NULL; |
6541 | char *cond_string = NULL; | |
6542 | ||
44feb3ce TT |
6543 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
6544 | ||
6545 | if (!arg) | |
6546 | arg = ""; | |
c906108c | 6547 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6548 | |
c906108c | 6549 | /* The allowed syntax is: |
c5aa993b JM |
6550 | catch unload |
6551 | catch unload if <cond> | |
6552 | catch unload <filename> | |
6553 | catch unload <filename> if <cond> | |
6554 | ||
c906108c SS |
6555 | The user is not allowed to specify the <filename> after an |
6556 | if clause. | |
c5aa993b | 6557 | |
c906108c | 6558 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6559 | |
c906108c SS |
6560 | First, check if there's an if clause. If so, then there |
6561 | cannot be a filename. */ | |
6562 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6563 | |
c906108c SS |
6564 | /* If there was an if clause, then there cannot be a filename. |
6565 | Else, there might be a filename and an if clause. */ | |
6566 | if (cond_string == NULL) | |
6567 | { | |
6568 | dll_pathname = ep_parse_optional_filename (&arg); | |
6569 | ep_skip_leading_whitespace (&arg); | |
6570 | cond_string = ep_parse_optional_if_clause (&arg); | |
6571 | } | |
c5aa993b | 6572 | |
c906108c | 6573 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6574 | error (_("Junk at end of arguments.")); |
c5aa993b | 6575 | |
c906108c SS |
6576 | /* Create an unload breakpoint that only triggers when an unload of |
6577 | the specified dll (or any dll, if no pathname was specified) | |
6578 | occurs. */ | |
39f77062 | 6579 | SOLIB_CREATE_CATCH_UNLOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6580 | dll_pathname, cond_string); |
c906108c | 6581 | } |
c906108c | 6582 | |
3086aeae DJ |
6583 | static enum print_stop_action |
6584 | print_exception_catchpoint (struct breakpoint *b) | |
6585 | { | |
ade92717 | 6586 | int bp_temp, bp_throw; |
3086aeae | 6587 | |
ade92717 | 6588 | annotate_catchpoint (b->number); |
3086aeae | 6589 | |
ade92717 AR |
6590 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
6591 | if (b->loc->address != b->loc->requested_address) | |
6592 | breakpoint_adjustment_warning (b->loc->requested_address, | |
6593 | b->loc->address, | |
6594 | b->number, 1); | |
6595 | bp_temp = b->loc->owner->disposition == disp_del; | |
6596 | ui_out_text (uiout, | |
6597 | bp_temp ? "Temporary catchpoint " | |
6598 | : "Catchpoint "); | |
6599 | if (!ui_out_is_mi_like_p (uiout)) | |
6600 | ui_out_field_int (uiout, "bkptno", b->number); | |
6601 | ui_out_text (uiout, | |
c0b37c48 AR |
6602 | bp_throw ? " (exception thrown), " |
6603 | : " (exception caught), "); | |
ade92717 AR |
6604 | if (ui_out_is_mi_like_p (uiout)) |
6605 | { | |
6606 | ui_out_field_string (uiout, "reason", | |
6607 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
6608 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
6609 | ui_out_field_int (uiout, "bkptno", b->number); | |
6610 | } | |
3086aeae DJ |
6611 | return PRINT_SRC_AND_LOC; |
6612 | } | |
6613 | ||
6614 | static void | |
6615 | print_one_exception_catchpoint (struct breakpoint *b, CORE_ADDR *last_addr) | |
6616 | { | |
6617 | if (addressprint) | |
6618 | { | |
6619 | annotate_field (4); | |
604133b5 AR |
6620 | if (b->loc == NULL || b->loc->shlib_disabled) |
6621 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
6622 | else | |
6623 | ui_out_field_core_addr (uiout, "addr", b->loc->address); | |
3086aeae DJ |
6624 | } |
6625 | annotate_field (5); | |
604133b5 AR |
6626 | if (b->loc) |
6627 | *last_addr = b->loc->address; | |
3086aeae DJ |
6628 | if (strstr (b->addr_string, "throw") != NULL) |
6629 | ui_out_field_string (uiout, "what", "exception throw"); | |
6630 | else | |
6631 | ui_out_field_string (uiout, "what", "exception catch"); | |
6632 | } | |
6633 | ||
6634 | static void | |
6635 | print_mention_exception_catchpoint (struct breakpoint *b) | |
6636 | { | |
ade92717 AR |
6637 | int bp_temp; |
6638 | int bp_throw; | |
6639 | ||
6640 | bp_temp = b->loc->owner->disposition == disp_del; | |
6641 | bp_throw = strstr (b->addr_string, "throw") != NULL; | |
6642 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
6643 | : _("Catchpoint ")); | |
6644 | ui_out_field_int (uiout, "bkptno", b->number); | |
6645 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
6646 | : _(" (catch)")); | |
3086aeae DJ |
6647 | } |
6648 | ||
6649 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { | |
6650 | print_exception_catchpoint, | |
6651 | print_one_exception_catchpoint, | |
6652 | print_mention_exception_catchpoint | |
6653 | }; | |
6654 | ||
6655 | static int | |
6656 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
6657 | enum exception_event_kind ex_event, int from_tty) | |
6658 | { | |
604133b5 AR |
6659 | char *trigger_func_name; |
6660 | ||
3086aeae | 6661 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 6662 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 6663 | else |
604133b5 | 6664 | trigger_func_name = "__cxa_throw"; |
3086aeae | 6665 | |
604133b5 AR |
6666 | break_command_really (trigger_func_name, cond_string, -1, |
6667 | 0 /* condition and thread are valid. */, | |
ade92717 | 6668 | tempflag, 0, |
604133b5 AR |
6669 | 0, |
6670 | AUTO_BOOLEAN_TRUE /* pending */, | |
6671 | &gnu_v3_exception_catchpoint_ops, from_tty); | |
3086aeae | 6672 | |
3086aeae DJ |
6673 | return 1; |
6674 | } | |
6675 | ||
c5aa993b | 6676 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
6677 | |
6678 | static void | |
fba45db2 KB |
6679 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
6680 | int tempflag, int from_tty) | |
c906108c | 6681 | { |
c5aa993b JM |
6682 | char *cond_string = NULL; |
6683 | struct symtab_and_line *sal = NULL; | |
6684 | ||
44feb3ce TT |
6685 | if (!arg) |
6686 | arg = ""; | |
c906108c | 6687 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6688 | |
c906108c SS |
6689 | cond_string = ep_parse_optional_if_clause (&arg); |
6690 | ||
6691 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6692 | error (_("Junk at end of arguments.")); |
c906108c SS |
6693 | |
6694 | if ((ex_event != EX_EVENT_THROW) && | |
6695 | (ex_event != EX_EVENT_CATCH)) | |
8a3fe4f8 | 6696 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 6697 | |
3086aeae DJ |
6698 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
6699 | return; | |
6700 | ||
8a3fe4f8 | 6701 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
6702 | } |
6703 | ||
44feb3ce TT |
6704 | /* Implementation of "catch catch" command. */ |
6705 | ||
6706 | static void | |
6707 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
6708 | { | |
6709 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
6710 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); | |
6711 | } | |
6712 | ||
6713 | /* Implementation of "catch throw" command. */ | |
6714 | ||
6715 | static void | |
6716 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
6717 | { | |
6718 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
6719 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); | |
6720 | } | |
6721 | ||
f7f9143b JB |
6722 | /* Create a breakpoint struct for Ada exception catchpoints. */ |
6723 | ||
6724 | static void | |
6725 | create_ada_exception_breakpoint (struct symtab_and_line sal, | |
6726 | char *addr_string, | |
6727 | char *exp_string, | |
6728 | char *cond_string, | |
6729 | struct expression *cond, | |
6730 | struct breakpoint_ops *ops, | |
6731 | int tempflag, | |
6732 | int from_tty) | |
6733 | { | |
6734 | struct breakpoint *b; | |
6735 | ||
6736 | if (from_tty) | |
6737 | { | |
6738 | describe_other_breakpoints (sal.pc, sal.section, -1); | |
6739 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special | |
6740 | version for exception catchpoints, because two catchpoints | |
6741 | used for different exception names will use the same address. | |
6742 | In this case, a "breakpoint ... also set at..." warning is | |
6743 | unproductive. Besides. the warning phrasing is also a bit | |
6744 | inapropriate, we should use the word catchpoint, and tell | |
6745 | the user what type of catchpoint it is. The above is good | |
6746 | enough for now, though. */ | |
6747 | } | |
6748 | ||
6749 | b = set_raw_breakpoint (sal, bp_breakpoint); | |
6750 | set_breakpoint_count (breakpoint_count + 1); | |
6751 | ||
6752 | b->enable_state = bp_enabled; | |
6753 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
6754 | b->number = breakpoint_count; | |
6755 | b->ignore_count = 0; | |
511a6cd4 | 6756 | b->loc->cond = cond; |
f7f9143b JB |
6757 | b->addr_string = addr_string; |
6758 | b->language = language_ada; | |
6759 | b->cond_string = cond_string; | |
6760 | b->exp_string = exp_string; | |
6761 | b->thread = -1; | |
6762 | b->ops = ops; | |
f7f9143b JB |
6763 | |
6764 | mention (b); | |
b60e7edf | 6765 | update_global_location_list (1); |
f7f9143b JB |
6766 | } |
6767 | ||
6768 | /* Implement the "catch exception" command. */ | |
6769 | ||
6770 | static void | |
44feb3ce TT |
6771 | catch_ada_exception_command (char *arg, int from_tty, |
6772 | struct cmd_list_element *command) | |
f7f9143b | 6773 | { |
44feb3ce | 6774 | int tempflag; |
f7f9143b JB |
6775 | struct symtab_and_line sal; |
6776 | enum bptype type; | |
6777 | char *addr_string = NULL; | |
6778 | char *exp_string = NULL; | |
6779 | char *cond_string = NULL; | |
6780 | struct expression *cond = NULL; | |
6781 | struct breakpoint_ops *ops = NULL; | |
6782 | ||
44feb3ce TT |
6783 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
6784 | ||
6785 | if (!arg) | |
6786 | arg = ""; | |
f7f9143b JB |
6787 | sal = ada_decode_exception_location (arg, &addr_string, &exp_string, |
6788 | &cond_string, &cond, &ops); | |
6789 | create_ada_exception_breakpoint (sal, addr_string, exp_string, | |
6790 | cond_string, cond, ops, tempflag, | |
6791 | from_tty); | |
6792 | } | |
6793 | ||
6794 | /* Implement the "catch assert" command. */ | |
6795 | ||
6796 | static void | |
44feb3ce | 6797 | catch_assert_command (char *arg, int from_tty, struct cmd_list_element *command) |
f7f9143b | 6798 | { |
44feb3ce | 6799 | int tempflag; |
f7f9143b JB |
6800 | struct symtab_and_line sal; |
6801 | char *addr_string = NULL; | |
6802 | struct breakpoint_ops *ops = NULL; | |
6803 | ||
44feb3ce TT |
6804 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
6805 | ||
6806 | if (!arg) | |
6807 | arg = ""; | |
f7f9143b JB |
6808 | sal = ada_decode_assert_location (arg, &addr_string, &ops); |
6809 | create_ada_exception_breakpoint (sal, addr_string, NULL, NULL, NULL, ops, | |
6810 | tempflag, from_tty); | |
6811 | } | |
6812 | ||
c906108c | 6813 | static void |
fba45db2 | 6814 | catch_command (char *arg, int from_tty) |
c906108c | 6815 | { |
44feb3ce | 6816 | error (_("Catch requires an event name.")); |
c906108c SS |
6817 | } |
6818 | \f | |
6819 | ||
6820 | static void | |
fba45db2 | 6821 | tcatch_command (char *arg, int from_tty) |
c906108c | 6822 | { |
44feb3ce | 6823 | error (_("Catch requires an event name.")); |
c906108c SS |
6824 | } |
6825 | ||
80f8a6eb | 6826 | /* Delete breakpoints by address or line. */ |
c906108c SS |
6827 | |
6828 | static void | |
fba45db2 | 6829 | clear_command (char *arg, int from_tty) |
c906108c | 6830 | { |
d6e956e5 VP |
6831 | struct breakpoint *b; |
6832 | VEC(breakpoint_p) *found = 0; | |
6833 | int ix; | |
c906108c SS |
6834 | int default_match; |
6835 | struct symtabs_and_lines sals; | |
6836 | struct symtab_and_line sal; | |
c906108c SS |
6837 | int i; |
6838 | ||
6839 | if (arg) | |
6840 | { | |
6841 | sals = decode_line_spec (arg, 1); | |
6842 | default_match = 0; | |
6843 | } | |
6844 | else | |
6845 | { | |
c5aa993b | 6846 | sals.sals = (struct symtab_and_line *) |
c906108c | 6847 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 6848 | make_cleanup (xfree, sals.sals); |
fe39c653 | 6849 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
6850 | sal.line = default_breakpoint_line; |
6851 | sal.symtab = default_breakpoint_symtab; | |
6852 | sal.pc = default_breakpoint_address; | |
6853 | if (sal.symtab == 0) | |
8a3fe4f8 | 6854 | error (_("No source file specified.")); |
c906108c SS |
6855 | |
6856 | sals.sals[0] = sal; | |
6857 | sals.nelts = 1; | |
6858 | ||
6859 | default_match = 1; | |
6860 | } | |
6861 | ||
ed0616c6 VP |
6862 | /* We don't call resolve_sal_pc here. That's not |
6863 | as bad as it seems, because all existing breakpoints | |
6864 | typically have both file/line and pc set. So, if | |
6865 | clear is given file/line, we can match this to existing | |
6866 | breakpoint without obtaining pc at all. | |
6867 | ||
6868 | We only support clearing given the address explicitly | |
6869 | present in breakpoint table. Say, we've set breakpoint | |
6870 | at file:line. There were several PC values for that file:line, | |
6871 | due to optimization, all in one block. | |
6872 | We've picked one PC value. If "clear" is issued with another | |
6873 | PC corresponding to the same file:line, the breakpoint won't | |
6874 | be cleared. We probably can still clear the breakpoint, but | |
6875 | since the other PC value is never presented to user, user | |
6876 | can only find it by guessing, and it does not seem important | |
6877 | to support that. */ | |
6878 | ||
c906108c | 6879 | /* For each line spec given, delete bps which correspond |
80f8a6eb MS |
6880 | to it. Do it in two passes, solely to preserve the current |
6881 | behavior that from_tty is forced true if we delete more than | |
6882 | one breakpoint. */ | |
c906108c | 6883 | |
80f8a6eb | 6884 | found = NULL; |
c906108c SS |
6885 | for (i = 0; i < sals.nelts; i++) |
6886 | { | |
6887 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
6888 | If line given (pc == 0), clear all bpts on specified line. |
6889 | If defaulting, clear all bpts on default line | |
c906108c | 6890 | or at default pc. |
c5aa993b JM |
6891 | |
6892 | defaulting sal.pc != 0 tests to do | |
6893 | ||
6894 | 0 1 pc | |
6895 | 1 1 pc _and_ line | |
6896 | 0 0 line | |
6897 | 1 0 <can't happen> */ | |
c906108c SS |
6898 | |
6899 | sal = sals.sals[i]; | |
c906108c | 6900 | |
d6e956e5 VP |
6901 | /* Find all matching breakpoints and add them to |
6902 | 'found'. */ | |
6903 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6904 | { |
0d381245 | 6905 | int match = 0; |
80f8a6eb MS |
6906 | /* Are we going to delete b? */ |
6907 | if (b->type != bp_none | |
6908 | && b->type != bp_watchpoint | |
6909 | && b->type != bp_hardware_watchpoint | |
6910 | && b->type != bp_read_watchpoint | |
0d381245 VP |
6911 | && b->type != bp_access_watchpoint) |
6912 | { | |
6913 | struct bp_location *loc = b->loc; | |
6914 | for (; loc; loc = loc->next) | |
6915 | { | |
6916 | int pc_match = sal.pc | |
6917 | && (loc->address == sal.pc) | |
6918 | && (!section_is_overlay (loc->section) | |
6919 | || loc->section == sal.section); | |
6920 | int line_match = ((default_match || (0 == sal.pc)) | |
6921 | && b->source_file != NULL | |
6922 | && sal.symtab != NULL | |
6923 | && strcmp (b->source_file, sal.symtab->filename) == 0 | |
6924 | && b->line_number == sal.line); | |
6925 | if (pc_match || line_match) | |
6926 | { | |
6927 | match = 1; | |
6928 | break; | |
6929 | } | |
6930 | } | |
6931 | } | |
6932 | ||
6933 | if (match) | |
d6e956e5 | 6934 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 6935 | } |
80f8a6eb MS |
6936 | } |
6937 | /* Now go thru the 'found' chain and delete them. */ | |
d6e956e5 | 6938 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
6939 | { |
6940 | if (arg) | |
8a3fe4f8 | 6941 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 6942 | else |
8a3fe4f8 | 6943 | error (_("No breakpoint at this line.")); |
80f8a6eb | 6944 | } |
c906108c | 6945 | |
d6e956e5 | 6946 | if (VEC_length(breakpoint_p, found) > 1) |
80f8a6eb MS |
6947 | from_tty = 1; /* Always report if deleted more than one */ |
6948 | if (from_tty) | |
a3f17187 | 6949 | { |
d6e956e5 | 6950 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
6951 | printf_unfiltered (_("Deleted breakpoint ")); |
6952 | else | |
6953 | printf_unfiltered (_("Deleted breakpoints ")); | |
6954 | } | |
80f8a6eb | 6955 | breakpoints_changed (); |
d6e956e5 VP |
6956 | |
6957 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 6958 | { |
c5aa993b | 6959 | if (from_tty) |
d6e956e5 VP |
6960 | printf_unfiltered ("%d ", b->number); |
6961 | delete_breakpoint (b); | |
c906108c | 6962 | } |
80f8a6eb MS |
6963 | if (from_tty) |
6964 | putchar_unfiltered ('\n'); | |
c906108c SS |
6965 | } |
6966 | \f | |
6967 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
6968 | all breakpoints that are marked for deletion, whether hit or not. | |
6969 | This is called after any breakpoint is hit, or after errors. */ | |
6970 | ||
6971 | void | |
fba45db2 | 6972 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
6973 | { |
6974 | struct breakpoint *b, *temp; | |
6975 | ||
6976 | for (; bs; bs = bs->next) | |
20874c92 VP |
6977 | if (bs->breakpoint_at |
6978 | && bs->breakpoint_at->owner | |
6979 | && bs->breakpoint_at->owner->disposition == disp_del | |
c906108c | 6980 | && bs->stop) |
4f8d1dc6 | 6981 | delete_breakpoint (bs->breakpoint_at->owner); |
c906108c SS |
6982 | |
6983 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 6984 | { |
b5de0fa7 | 6985 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
6986 | delete_breakpoint (b); |
6987 | } | |
c906108c SS |
6988 | } |
6989 | ||
b60e7edf PA |
6990 | /* If SHOULD_INSERT is true, do not insert any breakpoint locations |
6991 | into the inferior, only remove already-inserted locations that no | |
6992 | longer should be inserted. Functions that delete a breakpoint or | |
6993 | breakpoints should pass false, so that deleting a breakpoint | |
6994 | doesn't have the side effect of inserting the locations of other | |
6995 | breakpoints that are marked not-inserted, but should_be_inserted | |
6996 | returns true on them. | |
6997 | ||
6998 | This behaviour is useful is situations close to tear-down -- e.g., | |
6999 | after an exec, while the target still has execution, but breakpoint | |
7000 | shadows of the previous executable image should *NOT* be restored | |
7001 | to the new image; or before detaching, where the target still has | |
7002 | execution and wants to delete breakpoints from GDB's lists, and all | |
7003 | breakpoints had already been removed from the inferior. */ | |
7004 | ||
0d381245 | 7005 | static void |
b60e7edf | 7006 | update_global_location_list (int should_insert) |
0d381245 | 7007 | { |
74960c60 VP |
7008 | struct breakpoint *b; |
7009 | struct bp_location **next = &bp_location_chain; | |
7010 | struct bp_location *loc; | |
7011 | struct bp_location *loc2; | |
7012 | struct gdb_exception e; | |
7013 | VEC(bp_location_p) *old_locations = NULL; | |
7014 | int ret; | |
7015 | int ix; | |
7016 | ||
7017 | /* Store old locations for future reference. */ | |
7018 | for (loc = bp_location_chain; loc; loc = loc->global_next) | |
7019 | VEC_safe_push (bp_location_p, old_locations, loc); | |
0d381245 | 7020 | |
74960c60 VP |
7021 | bp_location_chain = NULL; |
7022 | ALL_BREAKPOINTS (b) | |
0d381245 | 7023 | { |
74960c60 | 7024 | for (loc = b->loc; loc; loc = loc->next) |
0d381245 | 7025 | { |
74960c60 VP |
7026 | *next = loc; |
7027 | next = &(loc->global_next); | |
7028 | *next = NULL; | |
0d381245 | 7029 | } |
74960c60 VP |
7030 | } |
7031 | ||
7032 | /* Identify bp_location instances that are no longer present in the new | |
7033 | list, and therefore should be freed. Note that it's not necessary that | |
7034 | those locations should be removed from inferior -- if there's another | |
7035 | location at the same address (previously marked as duplicate), | |
7036 | we don't need to remove/insert the location. */ | |
7037 | for (ix = 0; VEC_iterate(bp_location_p, old_locations, ix, loc); ++ix) | |
7038 | { | |
7039 | /* Tells if 'loc' is found amoung the new locations. If not, we | |
7040 | have to free it. */ | |
7041 | int found_object = 0; | |
20874c92 VP |
7042 | /* Tells if the location should remain inserted in the target. */ |
7043 | int keep_in_target = 0; | |
7044 | int removed = 0; | |
74960c60 VP |
7045 | for (loc2 = bp_location_chain; loc2; loc2 = loc2->global_next) |
7046 | if (loc2 == loc) | |
7047 | { | |
7048 | found_object = 1; | |
7049 | break; | |
7050 | } | |
7051 | ||
7052 | /* If this location is no longer present, and inserted, look if there's | |
7053 | maybe a new location at the same address. If so, mark that one | |
7054 | inserted, and don't remove this one. This is needed so that we | |
7055 | don't have a time window where a breakpoint at certain location is not | |
7056 | inserted. */ | |
7057 | ||
7058 | if (loc->inserted) | |
0d381245 | 7059 | { |
74960c60 | 7060 | /* If the location is inserted now, we might have to remove it. */ |
74960c60 VP |
7061 | |
7062 | if (found_object && should_be_inserted (loc)) | |
7063 | { | |
7064 | /* The location is still present in the location list, and still | |
7065 | should be inserted. Don't do anything. */ | |
20874c92 | 7066 | keep_in_target = 1; |
74960c60 VP |
7067 | } |
7068 | else | |
7069 | { | |
7070 | /* The location is either no longer present, or got disabled. | |
7071 | See if there's another location at the same address, in which | |
7072 | case we don't need to remove this one from the target. */ | |
7073 | if (breakpoint_address_is_meaningful (loc->owner)) | |
7074 | for (loc2 = bp_location_chain; loc2; loc2 = loc2->global_next) | |
7075 | { | |
7076 | /* For the sake of should_insert_location. The | |
7077 | call to check_duplicates will fix up this later. */ | |
7078 | loc2->duplicate = 0; | |
7079 | if (should_be_inserted (loc2) | |
7080 | && loc2 != loc && loc2->address == loc->address) | |
7081 | { | |
7082 | loc2->inserted = 1; | |
7083 | loc2->target_info = loc->target_info; | |
20874c92 | 7084 | keep_in_target = 1; |
74960c60 VP |
7085 | break; |
7086 | } | |
7087 | } | |
7088 | } | |
7089 | ||
20874c92 VP |
7090 | if (!keep_in_target) |
7091 | { | |
7092 | if (remove_breakpoint (loc, mark_uninserted)) | |
7093 | { | |
7094 | /* This is just about all we can do. We could keep this | |
7095 | location on the global list, and try to remove it next | |
7096 | time, but there's no particular reason why we will | |
7097 | succeed next time. | |
7098 | ||
7099 | Note that at this point, loc->owner is still valid, | |
7100 | as delete_breakpoint frees the breakpoint only | |
7101 | after calling us. */ | |
7102 | printf_filtered (_("warning: Error removing breakpoint %d\n"), | |
7103 | loc->owner->number); | |
7104 | } | |
7105 | removed = 1; | |
7106 | } | |
0d381245 | 7107 | } |
74960c60 VP |
7108 | |
7109 | if (!found_object) | |
20874c92 VP |
7110 | { |
7111 | if (removed) | |
7112 | { | |
7113 | /* This location was removed from the targets. In non-stop mode, | |
7114 | a race condition is possible where we've removed a breakpoint, | |
7115 | but stop events for that breakpoint are already queued and will | |
7116 | arrive later. To suppress spurious SIGTRAPs reported to user, | |
7117 | we keep this breakpoint location for a bit, and will retire it | |
7118 | after we see 3 * thread_count events. | |
7119 | The theory here is that reporting of events should, | |
7120 | "on the average", be fair, so after that many event we'll see | |
7121 | events from all threads that have anything of interest, and no | |
7122 | longer need to keep this breakpoint. This is just a | |
7123 | heuristic, but if it's wrong, we'll report unexpected SIGTRAP, | |
7124 | which is usability issue, but not a correctness problem. */ | |
7125 | loc->events_till_retirement = 3 * (thread_count () + 1); | |
7126 | loc->owner = NULL; | |
7127 | } | |
7128 | ||
7129 | free_bp_location (loc); | |
7130 | } | |
74960c60 VP |
7131 | } |
7132 | ||
7133 | ALL_BREAKPOINTS (b) | |
7134 | { | |
7135 | check_duplicates (b); | |
0d381245 | 7136 | } |
74960c60 | 7137 | |
a12654ce PA |
7138 | if (breakpoints_always_inserted_mode () |
7139 | && should_insert | |
7140 | && target_has_execution) | |
74960c60 VP |
7141 | insert_breakpoint_locations (); |
7142 | } | |
7143 | ||
20874c92 VP |
7144 | void |
7145 | breakpoint_retire_moribund (void) | |
7146 | { | |
7147 | struct bp_location *loc; | |
7148 | int ix; | |
7149 | ||
7150 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
7151 | if (--(loc->events_till_retirement) == 0) | |
7152 | { | |
7153 | free_bp_location (loc); | |
7154 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
7155 | --ix; | |
7156 | } | |
7157 | } | |
7158 | ||
74960c60 | 7159 | static void |
b60e7edf | 7160 | update_global_location_list_nothrow (int inserting) |
74960c60 VP |
7161 | { |
7162 | struct gdb_exception e; | |
7163 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
b60e7edf | 7164 | update_global_location_list (inserting); |
0d381245 VP |
7165 | } |
7166 | ||
a474d7c2 PA |
7167 | /* Clear BPT from a BPS. */ |
7168 | static void | |
7169 | bpstat_remove_breakpoint (bpstat bps, struct breakpoint *bpt) | |
7170 | { | |
7171 | bpstat bs; | |
7172 | for (bs = bps; bs; bs = bs->next) | |
7173 | if (bs->breakpoint_at && bs->breakpoint_at->owner == bpt) | |
7174 | { | |
7175 | bs->breakpoint_at = NULL; | |
7176 | bs->old_val = NULL; | |
7177 | /* bs->commands will be freed later. */ | |
7178 | } | |
7179 | } | |
7180 | ||
7181 | /* Callback for iterate_over_threads. */ | |
7182 | static int | |
7183 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
7184 | { | |
7185 | struct breakpoint *bpt = data; | |
7186 | bpstat_remove_breakpoint (th->stop_bpstat, bpt); | |
7187 | return 0; | |
7188 | } | |
7189 | ||
53a5351d JM |
7190 | /* Delete a breakpoint and clean up all traces of it in the data |
7191 | structures. */ | |
c906108c SS |
7192 | |
7193 | void | |
fba45db2 | 7194 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 7195 | { |
52f0bd74 | 7196 | struct breakpoint *b; |
74960c60 | 7197 | struct bp_location *loc, *next; |
c906108c | 7198 | |
8a3fe4f8 | 7199 | gdb_assert (bpt != NULL); |
c906108c SS |
7200 | |
7201 | /* Has this bp already been deleted? This can happen because multiple | |
7202 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
7203 | ||
7204 | One example of this happening is a watchpoint's scope bp. When the | |
7205 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
7206 | delete it. We also delete its scope bp. But the scope bp is marked | |
7207 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
7208 | checked for auto-deleting bp's, which are deleted. | |
7209 | ||
7210 | A real solution to this problem might involve reference counts in bp's, | |
7211 | and/or giving them pointers back to their referencing bpstat's, and | |
7212 | teaching delete_breakpoint to only free a bp's storage when no more | |
1272ad14 | 7213 | references were extent. A cheaper bandaid was chosen. */ |
c906108c SS |
7214 | if (bpt->type == bp_none) |
7215 | return; | |
7216 | ||
383f836e | 7217 | observer_notify_breakpoint_deleted (bpt->number); |
c906108c | 7218 | |
c906108c SS |
7219 | if (breakpoint_chain == bpt) |
7220 | breakpoint_chain = bpt->next; | |
7221 | ||
c906108c SS |
7222 | ALL_BREAKPOINTS (b) |
7223 | if (b->next == bpt) | |
c5aa993b JM |
7224 | { |
7225 | b->next = bpt->next; | |
7226 | break; | |
7227 | } | |
c906108c | 7228 | |
c906108c | 7229 | free_command_lines (&bpt->commands); |
c906108c | 7230 | if (bpt->cond_string != NULL) |
b8c9b27d | 7231 | xfree (bpt->cond_string); |
c906108c | 7232 | if (bpt->addr_string != NULL) |
b8c9b27d | 7233 | xfree (bpt->addr_string); |
c906108c | 7234 | if (bpt->exp != NULL) |
b8c9b27d | 7235 | xfree (bpt->exp); |
c906108c | 7236 | if (bpt->exp_string != NULL) |
b8c9b27d | 7237 | xfree (bpt->exp_string); |
c906108c SS |
7238 | if (bpt->val != NULL) |
7239 | value_free (bpt->val); | |
7240 | if (bpt->source_file != NULL) | |
b8c9b27d | 7241 | xfree (bpt->source_file); |
c906108c | 7242 | if (bpt->dll_pathname != NULL) |
b8c9b27d | 7243 | xfree (bpt->dll_pathname); |
c906108c | 7244 | if (bpt->triggered_dll_pathname != NULL) |
b8c9b27d | 7245 | xfree (bpt->triggered_dll_pathname); |
c906108c | 7246 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 7247 | xfree (bpt->exec_pathname); |
c906108c SS |
7248 | |
7249 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
7250 | /* FIXME, how can we find all bpstat's? | |
198757a8 VP |
7251 | We just check stop_bpstat for now. Note that we cannot just |
7252 | remove bpstats pointing at bpt from the stop_bpstat list | |
7253 | entirely, as breakpoint commands are associated with the bpstat; | |
7254 | if we remove it here, then the later call to | |
7255 | bpstat_do_actions (&stop_bpstat); | |
7256 | in event-top.c won't do anything, and temporary breakpoints | |
7257 | with commands won't work. */ | |
a474d7c2 | 7258 | |
a474d7c2 | 7259 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); |
74960c60 VP |
7260 | |
7261 | /* Now that breakpoint is removed from breakpoint | |
7262 | list, update the global location list. This | |
7263 | will remove locations that used to belong to | |
7264 | this breakpoint. Do this before freeing | |
7265 | the breakpoint itself, since remove_breakpoint | |
7266 | looks at location's owner. It might be better | |
7267 | design to have location completely self-contained, | |
7268 | but it's not the case now. */ | |
b60e7edf | 7269 | update_global_location_list (0); |
74960c60 VP |
7270 | |
7271 | ||
c906108c SS |
7272 | /* On the chance that someone will soon try again to delete this same |
7273 | bp, we mark it as deleted before freeing its storage. */ | |
7274 | bpt->type = bp_none; | |
7275 | ||
b8c9b27d | 7276 | xfree (bpt); |
c906108c SS |
7277 | } |
7278 | ||
4d6140d9 AC |
7279 | static void |
7280 | do_delete_breakpoint_cleanup (void *b) | |
7281 | { | |
7282 | delete_breakpoint (b); | |
7283 | } | |
7284 | ||
7285 | struct cleanup * | |
7286 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
7287 | { | |
7288 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
7289 | } | |
7290 | ||
c906108c | 7291 | void |
fba45db2 | 7292 | delete_command (char *arg, int from_tty) |
c906108c SS |
7293 | { |
7294 | struct breakpoint *b, *temp; | |
7295 | ||
ea9365bb TT |
7296 | dont_repeat (); |
7297 | ||
c906108c SS |
7298 | if (arg == 0) |
7299 | { | |
7300 | int breaks_to_delete = 0; | |
7301 | ||
7302 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
7303 | Do not delete internal or call-dummy breakpoints, these |
7304 | have to be deleted with an explicit breakpoint number argument. */ | |
7305 | ALL_BREAKPOINTS (b) | |
7306 | { | |
7307 | if (b->type != bp_call_dummy && | |
7308 | b->type != bp_shlib_event && | |
c4093a6a | 7309 | b->type != bp_thread_event && |
1900040c | 7310 | b->type != bp_overlay_event && |
c5aa993b | 7311 | b->number >= 0) |
973d738b DJ |
7312 | { |
7313 | breaks_to_delete = 1; | |
7314 | break; | |
7315 | } | |
c5aa993b | 7316 | } |
c906108c SS |
7317 | |
7318 | /* Ask user only if there are some breakpoints to delete. */ | |
7319 | if (!from_tty | |
e2e0b3e5 | 7320 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 7321 | { |
c5aa993b JM |
7322 | ALL_BREAKPOINTS_SAFE (b, temp) |
7323 | { | |
7324 | if (b->type != bp_call_dummy && | |
7325 | b->type != bp_shlib_event && | |
c4093a6a | 7326 | b->type != bp_thread_event && |
1900040c | 7327 | b->type != bp_overlay_event && |
c5aa993b JM |
7328 | b->number >= 0) |
7329 | delete_breakpoint (b); | |
7330 | } | |
c906108c SS |
7331 | } |
7332 | } | |
7333 | else | |
7334 | map_breakpoint_numbers (arg, delete_breakpoint); | |
7335 | } | |
7336 | ||
0d381245 VP |
7337 | static int |
7338 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 7339 | { |
0d381245 VP |
7340 | for (; loc; loc = loc->next) |
7341 | if (!loc->shlib_disabled) | |
7342 | return 0; | |
7343 | return 1; | |
fe3f5fa8 VP |
7344 | } |
7345 | ||
776592bf DE |
7346 | /* Subroutine of update_breakpoint_locations to simplify it. |
7347 | Return non-zero if multiple fns in list LOC have the same name. | |
7348 | Null names are ignored. */ | |
7349 | ||
7350 | static int | |
7351 | ambiguous_names_p (struct bp_location *loc) | |
7352 | { | |
7353 | struct bp_location *l; | |
7354 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
7355 | (int (*) (const void *, const void *)) streq, | |
7356 | NULL, xcalloc, xfree); | |
7357 | ||
7358 | for (l = loc; l != NULL; l = l->next) | |
7359 | { | |
7360 | const char **slot; | |
7361 | const char *name = l->function_name; | |
7362 | ||
7363 | /* Allow for some names to be NULL, ignore them. */ | |
7364 | if (name == NULL) | |
7365 | continue; | |
7366 | ||
7367 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
7368 | INSERT); | |
7369 | /* NOTE: We can assume slot != NULL here because xcalloc never returns | |
7370 | NULL. */ | |
7371 | if (*slot != NULL) | |
7372 | { | |
7373 | htab_delete (htab); | |
7374 | return 1; | |
7375 | } | |
7376 | *slot = name; | |
7377 | } | |
7378 | ||
7379 | htab_delete (htab); | |
7380 | return 0; | |
7381 | } | |
7382 | ||
fe3f5fa8 | 7383 | static void |
0d381245 VP |
7384 | update_breakpoint_locations (struct breakpoint *b, |
7385 | struct symtabs_and_lines sals) | |
fe3f5fa8 VP |
7386 | { |
7387 | int i; | |
7388 | char *s; | |
0d381245 VP |
7389 | struct bp_location *existing_locations = b->loc; |
7390 | ||
7391 | /* If there's no new locations, and all existing locations | |
7392 | are pending, don't do anything. This optimizes | |
7393 | the common case where all locations are in the same | |
7394 | shared library, that was unloaded. We'd like to | |
7395 | retain the location, so that when the library | |
7396 | is loaded again, we don't loose the enabled/disabled | |
7397 | status of the individual locations. */ | |
7398 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) | |
fe3f5fa8 VP |
7399 | return; |
7400 | ||
fe3f5fa8 VP |
7401 | b->loc = NULL; |
7402 | ||
0d381245 | 7403 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 7404 | { |
0d381245 VP |
7405 | struct bp_location *new_loc = |
7406 | add_location_to_breakpoint (b, b->type, &(sals.sals[i])); | |
fe3f5fa8 | 7407 | |
0d381245 VP |
7408 | /* Reparse conditions, they might contain references to the |
7409 | old symtab. */ | |
7410 | if (b->cond_string != NULL) | |
7411 | { | |
7412 | struct gdb_exception e; | |
fe3f5fa8 | 7413 | |
0d381245 VP |
7414 | s = b->cond_string; |
7415 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
7416 | { | |
7417 | new_loc->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), | |
7418 | 0); | |
7419 | } | |
7420 | if (e.reason < 0) | |
7421 | { | |
7422 | warning (_("failed to reevaluate condition for breakpoint %d: %s"), | |
7423 | b->number, e.message); | |
7424 | new_loc->enabled = 0; | |
7425 | } | |
7426 | } | |
fe3f5fa8 | 7427 | |
0d381245 VP |
7428 | if (b->source_file != NULL) |
7429 | xfree (b->source_file); | |
7430 | if (sals.sals[i].symtab == NULL) | |
7431 | b->source_file = NULL; | |
7432 | else | |
7433 | b->source_file = | |
7434 | savestring (sals.sals[i].symtab->filename, | |
7435 | strlen (sals.sals[i].symtab->filename)); | |
fe3f5fa8 | 7436 | |
0d381245 VP |
7437 | if (b->line_number == 0) |
7438 | b->line_number = sals.sals[i].line; | |
7439 | } | |
fe3f5fa8 | 7440 | |
514f746b AR |
7441 | /* Update locations of permanent breakpoints. */ |
7442 | if (b->enable_state == bp_permanent) | |
7443 | make_breakpoint_permanent (b); | |
7444 | ||
0d381245 VP |
7445 | /* If possible, carry over 'disable' status from existing breakpoints. */ |
7446 | { | |
7447 | struct bp_location *e = existing_locations; | |
776592bf DE |
7448 | /* If there are multiple breakpoints with the same function name, |
7449 | e.g. for inline functions, comparing function names won't work. | |
7450 | Instead compare pc addresses; this is just a heuristic as things | |
7451 | may have moved, but in practice it gives the correct answer | |
7452 | often enough until a better solution is found. */ | |
7453 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
7454 | ||
0d381245 VP |
7455 | for (; e; e = e->next) |
7456 | { | |
7457 | if (!e->enabled && e->function_name) | |
7458 | { | |
7459 | struct bp_location *l = b->loc; | |
776592bf DE |
7460 | if (have_ambiguous_names) |
7461 | { | |
7462 | for (; l; l = l->next) | |
7463 | if (e->address == l->address) | |
7464 | { | |
7465 | l->enabled = 0; | |
7466 | break; | |
7467 | } | |
7468 | } | |
7469 | else | |
7470 | { | |
7471 | for (; l; l = l->next) | |
7472 | if (l->function_name | |
7473 | && strcmp (e->function_name, l->function_name) == 0) | |
7474 | { | |
7475 | l->enabled = 0; | |
7476 | break; | |
7477 | } | |
7478 | } | |
0d381245 VP |
7479 | } |
7480 | } | |
7481 | } | |
fe3f5fa8 | 7482 | |
b60e7edf | 7483 | update_global_location_list (1); |
fe3f5fa8 VP |
7484 | } |
7485 | ||
7486 | ||
c906108c SS |
7487 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
7488 | The value we return ends up being the return value from catch_errors. | |
7489 | Unused in this case. */ | |
7490 | ||
7491 | static int | |
4efb68b1 | 7492 | breakpoint_re_set_one (void *bint) |
c906108c | 7493 | { |
53a5351d JM |
7494 | /* get past catch_errs */ |
7495 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
7496 | struct value *mark; |
7497 | int i; | |
fe3f5fa8 VP |
7498 | int not_found = 0; |
7499 | int *not_found_ptr = ¬_found; | |
7500 | struct symtabs_and_lines sals = {}; | |
ed0616c6 | 7501 | struct symtabs_and_lines expanded; |
c906108c | 7502 | char *s; |
b5de0fa7 | 7503 | enum enable_state save_enable; |
fe3f5fa8 VP |
7504 | struct gdb_exception e; |
7505 | ||
c906108c SS |
7506 | |
7507 | switch (b->type) | |
7508 | { | |
7509 | case bp_none: | |
8a3fe4f8 | 7510 | warning (_("attempted to reset apparently deleted breakpoint #%d?"), |
53a5351d | 7511 | b->number); |
c906108c SS |
7512 | return 0; |
7513 | case bp_breakpoint: | |
7514 | case bp_hardware_breakpoint: | |
7515 | case bp_catch_load: | |
7516 | case bp_catch_unload: | |
7517 | if (b->addr_string == NULL) | |
7518 | { | |
7519 | /* Anything without a string can't be re-set. */ | |
7520 | delete_breakpoint (b); | |
7521 | return 0; | |
7522 | } | |
c906108c SS |
7523 | |
7524 | set_language (b->language); | |
7525 | input_radix = b->input_radix; | |
7526 | s = b->addr_string; | |
fe3f5fa8 | 7527 | TRY_CATCH (e, RETURN_MASK_ERROR) |
c906108c | 7528 | { |
fe3f5fa8 VP |
7529 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, |
7530 | not_found_ptr); | |
7531 | } | |
7532 | if (e.reason < 0) | |
7533 | { | |
7534 | int not_found_and_ok = 0; | |
7535 | /* For pending breakpoints, it's expected that parsing | |
7536 | will fail until the right shared library is loaded. | |
7537 | User has already told to create pending breakpoints and | |
7538 | don't need extra messages. If breakpoint is in bp_shlib_disabled | |
7539 | state, then user already saw the message about that breakpoint | |
7540 | being disabled, and don't want to see more errors. */ | |
0d381245 VP |
7541 | if (not_found |
7542 | && (b->condition_not_parsed | |
7543 | || (b->loc && b->loc->shlib_disabled) | |
7544 | || b->enable_state == bp_disabled)) | |
fe3f5fa8 VP |
7545 | not_found_and_ok = 1; |
7546 | ||
7547 | if (!not_found_and_ok) | |
c906108c | 7548 | { |
fe3f5fa8 VP |
7549 | /* We surely don't want to warn about the same breakpoint |
7550 | 10 times. One solution, implemented here, is disable | |
7551 | the breakpoint on error. Another solution would be to | |
7552 | have separate 'warning emitted' flag. Since this | |
7553 | happens only when a binary has changed, I don't know | |
7554 | which approach is better. */ | |
7555 | b->enable_state = bp_disabled; | |
7556 | throw_exception (e); | |
c906108c | 7557 | } |
fe3f5fa8 | 7558 | } |
c906108c | 7559 | |
fe3f5fa8 VP |
7560 | if (not_found) |
7561 | break; | |
7562 | ||
7563 | gdb_assert (sals.nelts == 1); | |
7564 | resolve_sal_pc (&sals.sals[0]); | |
0d381245 | 7565 | if (b->condition_not_parsed && s && s[0]) |
fe3f5fa8 VP |
7566 | { |
7567 | char *cond_string = 0; | |
7568 | int thread = -1; | |
7569 | find_condition_and_thread (s, sals.sals[0].pc, | |
7570 | &cond_string, &thread); | |
7571 | if (cond_string) | |
7572 | b->cond_string = cond_string; | |
7573 | b->thread = thread; | |
0d381245 | 7574 | b->condition_not_parsed = 0; |
fe3f5fa8 | 7575 | } |
ed0616c6 VP |
7576 | expanded = expand_line_sal_maybe (sals.sals[0]); |
7577 | update_breakpoint_locations (b, expanded); | |
0d381245 | 7578 | |
b8c9b27d | 7579 | xfree (sals.sals); |
c906108c SS |
7580 | break; |
7581 | ||
7582 | case bp_watchpoint: | |
7583 | case bp_hardware_watchpoint: | |
7584 | case bp_read_watchpoint: | |
7585 | case bp_access_watchpoint: | |
0b3de036 VP |
7586 | /* Watchpoint can be either on expression using entirely global variables, |
7587 | or it can be on local variables. | |
7588 | ||
7589 | Watchpoints of the first kind are never auto-deleted, and even persist | |
7590 | across program restarts. Since they can use variables from shared | |
7591 | libraries, we need to reparse expression as libraries are loaded | |
7592 | and unloaded. | |
7593 | ||
7594 | Watchpoints on local variables can also change meaning as result | |
7595 | of solib event. For example, if a watchpoint uses both a local and | |
7596 | a global variables in expression, it's a local watchpoint, but | |
7597 | unloading of a shared library will make the expression invalid. | |
7598 | This is not a very common use case, but we still re-evaluate | |
7599 | expression, to avoid surprises to the user. | |
7600 | ||
7601 | Note that for local watchpoints, we re-evaluate it only if | |
7602 | watchpoints frame id is still valid. If it's not, it means | |
7603 | the watchpoint is out of scope and will be deleted soon. In fact, | |
7604 | I'm not sure we'll ever be called in this case. | |
7605 | ||
7606 | If a local watchpoint's frame id is still valid, then | |
7607 | b->exp_valid_block is likewise valid, and we can safely use it. | |
7608 | ||
7609 | Don't do anything about disabled watchpoints, since they will | |
7610 | be reevaluated again when enabled. */ | |
a5606eee | 7611 | update_watchpoint (b, 1 /* reparse */); |
c906108c | 7612 | break; |
c5aa993b JM |
7613 | /* We needn't really do anything to reset these, since the mask |
7614 | that requests them is unaffected by e.g., new libraries being | |
7615 | loaded. */ | |
c906108c SS |
7616 | case bp_catch_fork: |
7617 | case bp_catch_vfork: | |
7618 | case bp_catch_exec: | |
7619 | break; | |
c5aa993b | 7620 | |
c906108c | 7621 | default: |
a3f17187 | 7622 | printf_filtered (_("Deleting unknown breakpoint type %d\n"), b->type); |
c906108c | 7623 | /* fall through */ |
611c83ae PA |
7624 | /* Delete overlay event breakpoints; they will be reset later by |
7625 | breakpoint_re_set. */ | |
1900040c | 7626 | case bp_overlay_event: |
c906108c SS |
7627 | delete_breakpoint (b); |
7628 | break; | |
7629 | ||
c5aa993b JM |
7630 | /* This breakpoint is special, it's set up when the inferior |
7631 | starts and we really don't want to touch it. */ | |
c906108c SS |
7632 | case bp_shlib_event: |
7633 | ||
c4093a6a JM |
7634 | /* Like bp_shlib_event, this breakpoint type is special. |
7635 | Once it is set up, we do not want to touch it. */ | |
7636 | case bp_thread_event: | |
7637 | ||
c5aa993b JM |
7638 | /* Keep temporary breakpoints, which can be encountered when we step |
7639 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7640 | Otherwise these should have been blown away via the cleanup chain | |
7641 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7642 | case bp_until: |
7643 | case bp_finish: | |
7644 | case bp_watchpoint_scope: | |
7645 | case bp_call_dummy: | |
7646 | case bp_step_resume: | |
611c83ae PA |
7647 | case bp_longjmp: |
7648 | case bp_longjmp_resume: | |
c906108c SS |
7649 | break; |
7650 | } | |
7651 | ||
7652 | return 0; | |
7653 | } | |
7654 | ||
7655 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
7656 | void | |
fba45db2 | 7657 | breakpoint_re_set (void) |
c906108c SS |
7658 | { |
7659 | struct breakpoint *b, *temp; | |
7660 | enum language save_language; | |
7661 | int save_input_radix; | |
c5aa993b | 7662 | |
c906108c SS |
7663 | save_language = current_language->la_language; |
7664 | save_input_radix = input_radix; | |
7665 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7666 | { |
53a5351d | 7667 | /* Format possible error msg */ |
fe3f5fa8 | 7668 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
7669 | b->number); |
7670 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 7671 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 7672 | do_cleanups (cleanups); |
c5aa993b | 7673 | } |
c906108c SS |
7674 | set_language (save_language); |
7675 | input_radix = save_input_radix; | |
1900040c MS |
7676 | |
7677 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
7678 | } |
7679 | \f | |
c906108c SS |
7680 | /* Reset the thread number of this breakpoint: |
7681 | ||
7682 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 7683 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 7684 | void |
fba45db2 | 7685 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
7686 | { |
7687 | if (b->thread != -1) | |
7688 | { | |
39f77062 KB |
7689 | if (in_thread_list (inferior_ptid)) |
7690 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
7691 | } |
7692 | } | |
7693 | ||
03ac34d5 MS |
7694 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7695 | If from_tty is nonzero, it prints a message to that effect, | |
7696 | which ends with a period (no newline). */ | |
7697 | ||
c906108c | 7698 | void |
fba45db2 | 7699 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 7700 | { |
52f0bd74 | 7701 | struct breakpoint *b; |
c906108c SS |
7702 | |
7703 | if (count < 0) | |
7704 | count = 0; | |
7705 | ||
7706 | ALL_BREAKPOINTS (b) | |
7707 | if (b->number == bptnum) | |
c5aa993b JM |
7708 | { |
7709 | b->ignore_count = count; | |
221ea385 KS |
7710 | if (from_tty) |
7711 | { | |
7712 | if (count == 0) | |
a3f17187 | 7713 | printf_filtered (_("Will stop next time breakpoint %d is reached."), |
221ea385 KS |
7714 | bptnum); |
7715 | else if (count == 1) | |
a3f17187 | 7716 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
7717 | bptnum); |
7718 | else | |
a3f17187 | 7719 | printf_filtered (_("Will ignore next %d crossings of breakpoint %d."), |
221ea385 KS |
7720 | count, bptnum); |
7721 | } | |
c5aa993b | 7722 | breakpoints_changed (); |
383f836e | 7723 | observer_notify_breakpoint_modified (b->number); |
c5aa993b JM |
7724 | return; |
7725 | } | |
c906108c | 7726 | |
8a3fe4f8 | 7727 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
7728 | } |
7729 | ||
c906108c SS |
7730 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
7731 | ||
7732 | static void | |
fba45db2 | 7733 | ignore_command (char *args, int from_tty) |
c906108c SS |
7734 | { |
7735 | char *p = args; | |
52f0bd74 | 7736 | int num; |
c906108c SS |
7737 | |
7738 | if (p == 0) | |
e2e0b3e5 | 7739 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 7740 | |
c906108c | 7741 | num = get_number (&p); |
5c44784c | 7742 | if (num == 0) |
8a3fe4f8 | 7743 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 7744 | if (*p == 0) |
8a3fe4f8 | 7745 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
7746 | |
7747 | set_ignore_count (num, | |
7748 | longest_to_int (value_as_long (parse_and_eval (p))), | |
7749 | from_tty); | |
221ea385 KS |
7750 | if (from_tty) |
7751 | printf_filtered ("\n"); | |
c906108c SS |
7752 | } |
7753 | \f | |
7754 | /* Call FUNCTION on each of the breakpoints | |
7755 | whose numbers are given in ARGS. */ | |
7756 | ||
7757 | static void | |
831662b3 | 7758 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) |
c906108c | 7759 | { |
52f0bd74 | 7760 | char *p = args; |
c906108c | 7761 | char *p1; |
52f0bd74 AC |
7762 | int num; |
7763 | struct breakpoint *b, *tmp; | |
11cf8741 | 7764 | int match; |
c906108c SS |
7765 | |
7766 | if (p == 0) | |
e2e0b3e5 | 7767 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c SS |
7768 | |
7769 | while (*p) | |
7770 | { | |
11cf8741 | 7771 | match = 0; |
c906108c | 7772 | p1 = p; |
c5aa993b | 7773 | |
5c44784c JM |
7774 | num = get_number_or_range (&p1); |
7775 | if (num == 0) | |
c5aa993b | 7776 | { |
8a3fe4f8 | 7777 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
7778 | } |
7779 | else | |
7780 | { | |
7781 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
7782 | if (b->number == num) | |
7783 | { | |
7784 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 7785 | match = 1; |
5c44784c JM |
7786 | function (b); |
7787 | if (related_breakpoint) | |
7788 | function (related_breakpoint); | |
11cf8741 | 7789 | break; |
5c44784c | 7790 | } |
11cf8741 | 7791 | if (match == 0) |
a3f17187 | 7792 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 7793 | } |
c906108c SS |
7794 | p = p1; |
7795 | } | |
7796 | } | |
7797 | ||
0d381245 VP |
7798 | static struct bp_location * |
7799 | find_location_by_number (char *number) | |
7800 | { | |
7801 | char *dot = strchr (number, '.'); | |
7802 | char *p1; | |
7803 | int bp_num; | |
7804 | int loc_num; | |
7805 | struct breakpoint *b; | |
7806 | struct bp_location *loc; | |
7807 | ||
7808 | *dot = '\0'; | |
7809 | ||
7810 | p1 = number; | |
7811 | bp_num = get_number_or_range (&p1); | |
7812 | if (bp_num == 0) | |
7813 | error (_("Bad breakpoint number '%s'"), number); | |
7814 | ||
7815 | ALL_BREAKPOINTS (b) | |
7816 | if (b->number == bp_num) | |
7817 | { | |
7818 | break; | |
7819 | } | |
7820 | ||
7821 | if (!b || b->number != bp_num) | |
7822 | error (_("Bad breakpoint number '%s'"), number); | |
7823 | ||
7824 | p1 = dot+1; | |
7825 | loc_num = get_number_or_range (&p1); | |
7826 | if (loc_num == 0) | |
7827 | error (_("Bad breakpoint location number '%s'"), number); | |
7828 | ||
7829 | --loc_num; | |
7830 | loc = b->loc; | |
7831 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
7832 | ; | |
7833 | if (!loc) | |
7834 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
7835 | ||
7836 | return loc; | |
7837 | } | |
7838 | ||
7839 | ||
1900040c MS |
7840 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7841 | If from_tty is nonzero, it prints a message to that effect, | |
7842 | which ends with a period (no newline). */ | |
7843 | ||
c906108c | 7844 | void |
fba45db2 | 7845 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7846 | { |
7847 | /* Never disable a watchpoint scope breakpoint; we want to | |
7848 | hit them when we leave scope so we can delete both the | |
7849 | watchpoint and its scope breakpoint at that time. */ | |
7850 | if (bpt->type == bp_watchpoint_scope) | |
7851 | return; | |
7852 | ||
c2c6d25f | 7853 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 7854 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
7855 | return; |
7856 | ||
b5de0fa7 | 7857 | bpt->enable_state = bp_disabled; |
c906108c | 7858 | |
b60e7edf | 7859 | update_global_location_list (0); |
c906108c | 7860 | |
383f836e | 7861 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
7862 | } |
7863 | ||
c906108c | 7864 | static void |
fba45db2 | 7865 | disable_command (char *args, int from_tty) |
c906108c | 7866 | { |
52f0bd74 | 7867 | struct breakpoint *bpt; |
c906108c SS |
7868 | if (args == 0) |
7869 | ALL_BREAKPOINTS (bpt) | |
7870 | switch (bpt->type) | |
c5aa993b JM |
7871 | { |
7872 | case bp_none: | |
8a3fe4f8 | 7873 | warning (_("attempted to disable apparently deleted breakpoint #%d?"), |
53a5351d | 7874 | bpt->number); |
c5aa993b JM |
7875 | continue; |
7876 | case bp_breakpoint: | |
7877 | case bp_catch_load: | |
7878 | case bp_catch_unload: | |
7879 | case bp_catch_fork: | |
7880 | case bp_catch_vfork: | |
7881 | case bp_catch_exec: | |
c5aa993b JM |
7882 | case bp_hardware_breakpoint: |
7883 | case bp_watchpoint: | |
7884 | case bp_hardware_watchpoint: | |
7885 | case bp_read_watchpoint: | |
7886 | case bp_access_watchpoint: | |
7887 | disable_breakpoint (bpt); | |
7888 | default: | |
7889 | continue; | |
7890 | } | |
0d381245 VP |
7891 | else if (strchr (args, '.')) |
7892 | { | |
7893 | struct bp_location *loc = find_location_by_number (args); | |
7894 | if (loc) | |
7895 | loc->enabled = 0; | |
b60e7edf | 7896 | update_global_location_list (0); |
0d381245 | 7897 | } |
c906108c SS |
7898 | else |
7899 | map_breakpoint_numbers (args, disable_breakpoint); | |
7900 | } | |
7901 | ||
7902 | static void | |
fba45db2 | 7903 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 7904 | { |
c906108c SS |
7905 | int target_resources_ok, other_type_used; |
7906 | struct value *mark; | |
7907 | ||
7908 | if (bpt->type == bp_hardware_breakpoint) | |
7909 | { | |
7910 | int i; | |
c5aa993b | 7911 | i = hw_breakpoint_used_count (); |
53a5351d JM |
7912 | target_resources_ok = |
7913 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
7914 | i + 1, 0); | |
c906108c | 7915 | if (target_resources_ok == 0) |
8a3fe4f8 | 7916 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 7917 | else if (target_resources_ok < 0) |
8a3fe4f8 | 7918 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
7919 | } |
7920 | ||
fe3f5fa8 VP |
7921 | if (bpt->type == bp_watchpoint || |
7922 | bpt->type == bp_hardware_watchpoint || | |
7923 | bpt->type == bp_read_watchpoint || | |
7924 | bpt->type == bp_access_watchpoint) | |
c906108c | 7925 | { |
fe3f5fa8 VP |
7926 | struct frame_id saved_frame_id; |
7927 | ||
7928 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
7929 | if (bpt->exp_valid_block != NULL) | |
c906108c | 7930 | { |
fe3f5fa8 VP |
7931 | struct frame_info *fr = |
7932 | fr = frame_find_by_id (bpt->watchpoint_frame); | |
7933 | if (fr == NULL) | |
c906108c | 7934 | { |
fe3f5fa8 VP |
7935 | printf_filtered (_("\ |
7936 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
7937 | is valid is not currently in scope.\n"), bpt->number); | |
c906108c SS |
7938 | return; |
7939 | } | |
fe3f5fa8 | 7940 | select_frame (fr); |
c906108c | 7941 | } |
0101ce28 | 7942 | |
b4c291bb KH |
7943 | if (bpt->val) |
7944 | value_free (bpt->val); | |
fe3f5fa8 | 7945 | mark = value_mark (); |
fa4727a6 DJ |
7946 | fetch_watchpoint_value (bpt->exp, &bpt->val, NULL, NULL); |
7947 | if (bpt->val) | |
7948 | release_value (bpt->val); | |
7949 | bpt->val_valid = 1; | |
7950 | ||
fe3f5fa8 VP |
7951 | if (bpt->type == bp_hardware_watchpoint || |
7952 | bpt->type == bp_read_watchpoint || | |
c5aa993b JM |
7953 | bpt->type == bp_access_watchpoint) |
7954 | { | |
fe3f5fa8 VP |
7955 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); |
7956 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); | |
0101ce28 | 7957 | |
fe3f5fa8 VP |
7958 | /* Hack around 'unused var' error for some targets here */ |
7959 | (void) mem_cnt, (void) i; | |
7960 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
7961 | bpt->type, i + mem_cnt, other_type_used); | |
7962 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
7963 | bp_watchpoint in the following condition */ | |
7964 | if (target_resources_ok < 0) | |
c5aa993b | 7965 | { |
fe3f5fa8 | 7966 | printf_filtered (_("\ |
c906108c | 7967 | Cannot enable watchpoint %d because target watch resources\n\ |
a3f17187 | 7968 | have been allocated for other watchpoints.\n"), bpt->number); |
fe3f5fa8 VP |
7969 | value_free_to_mark (mark); |
7970 | return; | |
c5aa993b JM |
7971 | } |
7972 | } | |
fe3f5fa8 VP |
7973 | |
7974 | select_frame (frame_find_by_id (saved_frame_id)); | |
7975 | value_free_to_mark (mark); | |
c906108c | 7976 | } |
0101ce28 | 7977 | |
b4c291bb KH |
7978 | if (bpt->enable_state != bp_permanent) |
7979 | bpt->enable_state = bp_enabled; | |
7980 | bpt->disposition = disposition; | |
b60e7edf | 7981 | update_global_location_list (1); |
b4c291bb KH |
7982 | breakpoints_changed (); |
7983 | ||
383f836e | 7984 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
7985 | } |
7986 | ||
fe3f5fa8 | 7987 | |
c906108c | 7988 | void |
fba45db2 | 7989 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7990 | { |
7991 | do_enable_breakpoint (bpt, bpt->disposition); | |
7992 | } | |
7993 | ||
7994 | /* The enable command enables the specified breakpoints (or all defined | |
7995 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 7996 | in stopping the inferior. */ |
c906108c | 7997 | |
c906108c | 7998 | static void |
fba45db2 | 7999 | enable_command (char *args, int from_tty) |
c906108c | 8000 | { |
52f0bd74 | 8001 | struct breakpoint *bpt; |
c906108c SS |
8002 | if (args == 0) |
8003 | ALL_BREAKPOINTS (bpt) | |
8004 | switch (bpt->type) | |
c5aa993b JM |
8005 | { |
8006 | case bp_none: | |
8a3fe4f8 | 8007 | warning (_("attempted to enable apparently deleted breakpoint #%d?"), |
53a5351d | 8008 | bpt->number); |
c5aa993b JM |
8009 | continue; |
8010 | case bp_breakpoint: | |
8011 | case bp_catch_load: | |
8012 | case bp_catch_unload: | |
8013 | case bp_catch_fork: | |
8014 | case bp_catch_vfork: | |
8015 | case bp_catch_exec: | |
c5aa993b JM |
8016 | case bp_hardware_breakpoint: |
8017 | case bp_watchpoint: | |
8018 | case bp_hardware_watchpoint: | |
8019 | case bp_read_watchpoint: | |
8020 | case bp_access_watchpoint: | |
8021 | enable_breakpoint (bpt); | |
8022 | default: | |
8023 | continue; | |
8024 | } | |
0d381245 VP |
8025 | else if (strchr (args, '.')) |
8026 | { | |
8027 | struct bp_location *loc = find_location_by_number (args); | |
8028 | if (loc) | |
8029 | loc->enabled = 1; | |
b60e7edf | 8030 | update_global_location_list (1); |
0d381245 | 8031 | } |
c906108c SS |
8032 | else |
8033 | map_breakpoint_numbers (args, enable_breakpoint); | |
8034 | } | |
8035 | ||
8036 | static void | |
fba45db2 | 8037 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c | 8038 | { |
b5de0fa7 | 8039 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
8040 | } |
8041 | ||
c906108c | 8042 | static void |
fba45db2 | 8043 | enable_once_command (char *args, int from_tty) |
c906108c SS |
8044 | { |
8045 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
8046 | } | |
8047 | ||
8048 | static void | |
fba45db2 | 8049 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c | 8050 | { |
b5de0fa7 | 8051 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
8052 | } |
8053 | ||
c906108c | 8054 | static void |
fba45db2 | 8055 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
8056 | { |
8057 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
8058 | } | |
8059 | \f | |
fa8d40ab JJ |
8060 | static void |
8061 | set_breakpoint_cmd (char *args, int from_tty) | |
8062 | { | |
8063 | } | |
8064 | ||
8065 | static void | |
8066 | show_breakpoint_cmd (char *args, int from_tty) | |
8067 | { | |
8068 | } | |
8069 | ||
c906108c SS |
8070 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
8071 | ||
8072 | struct symtabs_and_lines | |
fba45db2 | 8073 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
8074 | { |
8075 | struct symtabs_and_lines sals; | |
8076 | if (string == 0) | |
8a3fe4f8 | 8077 | error (_("Empty line specification.")); |
c906108c SS |
8078 | if (default_breakpoint_valid) |
8079 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
8080 | default_breakpoint_symtab, |
8081 | default_breakpoint_line, | |
68219205 | 8082 | (char ***) NULL, NULL); |
c906108c SS |
8083 | else |
8084 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 8085 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c | 8086 | if (*string) |
8a3fe4f8 | 8087 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
8088 | return sals; |
8089 | } | |
8181d85f DJ |
8090 | |
8091 | /* Create and insert a raw software breakpoint at PC. Return an | |
8092 | identifier, which should be used to remove the breakpoint later. | |
8093 | In general, places which call this should be using something on the | |
8094 | breakpoint chain instead; this function should be eliminated | |
8095 | someday. */ | |
8096 | ||
8097 | void * | |
8098 | deprecated_insert_raw_breakpoint (CORE_ADDR pc) | |
8099 | { | |
8100 | struct bp_target_info *bp_tgt; | |
8101 | ||
8102 | bp_tgt = xmalloc (sizeof (struct bp_target_info)); | |
8103 | memset (bp_tgt, 0, sizeof (struct bp_target_info)); | |
8104 | ||
8105 | bp_tgt->placed_address = pc; | |
8106 | if (target_insert_breakpoint (bp_tgt) != 0) | |
8107 | { | |
8108 | /* Could not insert the breakpoint. */ | |
8109 | xfree (bp_tgt); | |
8110 | return NULL; | |
8111 | } | |
8112 | ||
8113 | return bp_tgt; | |
8114 | } | |
8115 | ||
8116 | /* Remove a breakpoint BP inserted by deprecated_insert_raw_breakpoint. */ | |
8117 | ||
8118 | int | |
8119 | deprecated_remove_raw_breakpoint (void *bp) | |
8120 | { | |
8121 | struct bp_target_info *bp_tgt = bp; | |
8122 | int ret; | |
8123 | ||
8124 | ret = target_remove_breakpoint (bp_tgt); | |
8125 | xfree (bp_tgt); | |
8126 | ||
8127 | return ret; | |
8128 | } | |
8129 | ||
8130 | /* One (or perhaps two) breakpoints used for software single stepping. */ | |
8131 | ||
8132 | static void *single_step_breakpoints[2]; | |
8133 | ||
8134 | /* Create and insert a breakpoint for software single step. */ | |
8135 | ||
8136 | void | |
8137 | insert_single_step_breakpoint (CORE_ADDR next_pc) | |
8138 | { | |
8139 | void **bpt_p; | |
8140 | ||
8141 | if (single_step_breakpoints[0] == NULL) | |
8142 | bpt_p = &single_step_breakpoints[0]; | |
8143 | else | |
8144 | { | |
8145 | gdb_assert (single_step_breakpoints[1] == NULL); | |
8146 | bpt_p = &single_step_breakpoints[1]; | |
8147 | } | |
8148 | ||
8149 | /* NOTE drow/2006-04-11: A future improvement to this function would be | |
8150 | to only create the breakpoints once, and actually put them on the | |
8151 | breakpoint chain. That would let us use set_raw_breakpoint. We could | |
8152 | adjust the addresses each time they were needed. Doing this requires | |
8153 | corresponding changes elsewhere where single step breakpoints are | |
8154 | handled, however. So, for now, we use this. */ | |
8155 | ||
8156 | *bpt_p = deprecated_insert_raw_breakpoint (next_pc); | |
8157 | if (*bpt_p == NULL) | |
1893a4c0 | 8158 | error (_("Could not insert single-step breakpoint at 0x%s"), |
8181d85f DJ |
8159 | paddr_nz (next_pc)); |
8160 | } | |
8161 | ||
8162 | /* Remove and delete any breakpoints used for software single step. */ | |
8163 | ||
8164 | void | |
8165 | remove_single_step_breakpoints (void) | |
8166 | { | |
8167 | gdb_assert (single_step_breakpoints[0] != NULL); | |
8168 | ||
8169 | /* See insert_single_step_breakpoint for more about this deprecated | |
8170 | call. */ | |
8171 | deprecated_remove_raw_breakpoint (single_step_breakpoints[0]); | |
8172 | single_step_breakpoints[0] = NULL; | |
8173 | ||
8174 | if (single_step_breakpoints[1] != NULL) | |
8175 | { | |
8176 | deprecated_remove_raw_breakpoint (single_step_breakpoints[1]); | |
8177 | single_step_breakpoints[1] = NULL; | |
8178 | } | |
8179 | } | |
8180 | ||
1aafd4da UW |
8181 | /* Check whether a software single-step breakpoint is inserted at PC. */ |
8182 | ||
8183 | static int | |
8184 | single_step_breakpoint_inserted_here_p (CORE_ADDR pc) | |
8185 | { | |
8186 | int i; | |
8187 | ||
8188 | for (i = 0; i < 2; i++) | |
8189 | { | |
8190 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
8191 | if (bp_tgt && bp_tgt->placed_address == pc) | |
8192 | return 1; | |
8193 | } | |
8194 | ||
8195 | return 0; | |
8196 | } | |
8197 | ||
c906108c | 8198 | \f |
31e2b00f AS |
8199 | /* This help string is used for the break, hbreak, tbreak and thbreak commands. |
8200 | It is defined as a macro to prevent duplication. | |
8201 | COMMAND should be a string constant containing the name of the command. */ | |
8202 | #define BREAK_ARGS_HELP(command) \ | |
8203 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
8204 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
8205 | If a line number is specified, break at start of code for that line.\n\ | |
8206 | If a function is specified, break at start of code for that function.\n\ | |
8207 | If an address is specified, break at that exact address.\n\ | |
8208 | With no LOCATION, uses current execution address of selected stack frame.\n\ | |
8209 | This is useful for breaking on return to a stack frame.\n\ | |
8210 | \n\ | |
8211 | THREADNUM is the number from \"info threads\".\n\ | |
8212 | CONDITION is a boolean expression.\n\ | |
8213 | \n\ | |
8214 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
8215 | \n\ | |
8216 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
8217 | ||
44feb3ce TT |
8218 | /* List of subcommands for "catch". */ |
8219 | static struct cmd_list_element *catch_cmdlist; | |
8220 | ||
8221 | /* List of subcommands for "tcatch". */ | |
8222 | static struct cmd_list_element *tcatch_cmdlist; | |
8223 | ||
8224 | /* Like add_cmd, but add the command to both the "catch" and "tcatch" | |
8225 | lists, and pass some additional user data to the command function. */ | |
8226 | static void | |
8227 | add_catch_command (char *name, char *docstring, | |
8228 | void (*sfunc) (char *args, int from_tty, | |
8229 | struct cmd_list_element *command), | |
8230 | void *user_data_catch, | |
8231 | void *user_data_tcatch) | |
8232 | { | |
8233 | struct cmd_list_element *command; | |
8234 | ||
8235 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
8236 | &catch_cmdlist); | |
8237 | set_cmd_sfunc (command, sfunc); | |
8238 | set_cmd_context (command, user_data_catch); | |
8239 | ||
8240 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
8241 | &tcatch_cmdlist); | |
8242 | set_cmd_sfunc (command, sfunc); | |
8243 | set_cmd_context (command, user_data_tcatch); | |
8244 | } | |
8245 | ||
c906108c | 8246 | void |
fba45db2 | 8247 | _initialize_breakpoint (void) |
c906108c | 8248 | { |
fa8d40ab JJ |
8249 | static struct cmd_list_element *breakpoint_set_cmdlist; |
8250 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
c906108c SS |
8251 | struct cmd_list_element *c; |
8252 | ||
84acb35a | 8253 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
84acb35a | 8254 | |
c906108c SS |
8255 | breakpoint_chain = 0; |
8256 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
8257 | before a breakpoint is set. */ | |
8258 | breakpoint_count = 0; | |
8259 | ||
1bedd215 AC |
8260 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
8261 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
8262 | Usage is `ignore N COUNT'.")); | |
c906108c | 8263 | if (xdb_commands) |
c5aa993b | 8264 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 8265 | |
1bedd215 AC |
8266 | add_com ("commands", class_breakpoint, commands_command, _("\ |
8267 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
8268 | Give breakpoint number as argument after \"commands\".\n\ |
8269 | With no argument, the targeted breakpoint is the last one set.\n\ | |
8270 | The commands themselves follow starting on the next line.\n\ | |
8271 | Type a line containing \"end\" to indicate the end of them.\n\ | |
8272 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 8273 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 8274 | |
1bedd215 AC |
8275 | add_com ("condition", class_breakpoint, condition_command, _("\ |
8276 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 8277 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 8278 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 8279 | |
1bedd215 | 8280 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 8281 | Set a temporary breakpoint.\n\ |
c906108c SS |
8282 | Like \"break\" except the breakpoint is only temporary,\n\ |
8283 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
8284 | by using \"enable delete\" on the breakpoint number.\n\ |
8285 | \n" | |
8286 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 8287 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 8288 | |
1bedd215 | 8289 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
31e2b00f | 8290 | Set a hardware assisted breakpoint.\n\ |
c906108c | 8291 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
8292 | some target hardware may not have this support.\n\ |
8293 | \n" | |
8294 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 8295 | set_cmd_completer (c, location_completer); |
c906108c | 8296 | |
1bedd215 | 8297 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 8298 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 8299 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
8300 | so it will be deleted when hit.\n\ |
8301 | \n" | |
8302 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 8303 | set_cmd_completer (c, location_completer); |
c906108c | 8304 | |
1bedd215 AC |
8305 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
8306 | Enable some breakpoints.\n\ | |
c906108c SS |
8307 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8308 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8309 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8310 | With a subcommand you can enable temporarily."), |
c906108c SS |
8311 | &enablelist, "enable ", 1, &cmdlist); |
8312 | if (xdb_commands) | |
1bedd215 AC |
8313 | add_com ("ab", class_breakpoint, enable_command, _("\ |
8314 | Enable some breakpoints.\n\ | |
c906108c SS |
8315 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8316 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8317 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8318 | With a subcommand you can enable temporarily.")); |
c906108c SS |
8319 | |
8320 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
8321 | ||
1bedd215 AC |
8322 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
8323 | Enable some breakpoints.\n\ | |
c906108c SS |
8324 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8325 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8326 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 8327 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 8328 | |
1a966eab AC |
8329 | add_cmd ("once", no_class, enable_once_command, _("\ |
8330 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8331 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8332 | &enablebreaklist); |
8333 | ||
1a966eab AC |
8334 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8335 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8336 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8337 | &enablebreaklist); |
8338 | ||
1a966eab AC |
8339 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8340 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8341 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8342 | &enablelist); |
8343 | ||
1a966eab AC |
8344 | add_cmd ("once", no_class, enable_once_command, _("\ |
8345 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8346 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8347 | &enablelist); |
8348 | ||
1bedd215 AC |
8349 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
8350 | Disable some breakpoints.\n\ | |
c906108c SS |
8351 | Arguments are breakpoint numbers with spaces in between.\n\ |
8352 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 8353 | A disabled breakpoint is not forgotten, but has no effect until reenabled."), |
c906108c SS |
8354 | &disablelist, "disable ", 1, &cmdlist); |
8355 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
8356 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
8357 | if (xdb_commands) | |
1bedd215 AC |
8358 | add_com ("sb", class_breakpoint, disable_command, _("\ |
8359 | Disable some breakpoints.\n\ | |
c906108c SS |
8360 | Arguments are breakpoint numbers with spaces in between.\n\ |
8361 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 8362 | A disabled breakpoint is not forgotten, but has no effect until reenabled.")); |
c906108c | 8363 | |
1a966eab AC |
8364 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
8365 | Disable some breakpoints.\n\ | |
c906108c SS |
8366 | Arguments are breakpoint numbers with spaces in between.\n\ |
8367 | To disable all breakpoints, give no argument.\n\ | |
8368 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
1a966eab | 8369 | This command may be abbreviated \"disable\"."), |
c906108c SS |
8370 | &disablelist); |
8371 | ||
1bedd215 AC |
8372 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
8373 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
8374 | Arguments are breakpoint numbers with spaces in between.\n\ |
8375 | To delete all breakpoints, give no argument.\n\ | |
8376 | \n\ | |
8377 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 8378 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
8379 | &deletelist, "delete ", 1, &cmdlist); |
8380 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 8381 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 8382 | if (xdb_commands) |
1bedd215 AC |
8383 | add_com ("db", class_breakpoint, delete_command, _("\ |
8384 | Delete some breakpoints.\n\ | |
c906108c | 8385 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 8386 | To delete all breakpoints, give no argument.\n")); |
c906108c | 8387 | |
1a966eab AC |
8388 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
8389 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
8390 | Arguments are breakpoint numbers with spaces in between.\n\ |
8391 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 8392 | This command may be abbreviated \"delete\"."), |
c906108c SS |
8393 | &deletelist); |
8394 | ||
1bedd215 AC |
8395 | add_com ("clear", class_breakpoint, clear_command, _("\ |
8396 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
8397 | Argument may be line number, function name, or \"*\" and an address.\n\ |
8398 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
8399 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
8400 | If an address is specified, breakpoints at that address are cleared.\n\ |
8401 | \n\ | |
8402 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
8403 | is executing in.\n\ |
8404 | \n\ | |
1bedd215 | 8405 | See also the \"delete\" command which clears breakpoints by number.")); |
c906108c | 8406 | |
1bedd215 | 8407 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
8408 | Set breakpoint at specified line or function.\n" |
8409 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 8410 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 8411 | |
c906108c SS |
8412 | add_com_alias ("b", "break", class_run, 1); |
8413 | add_com_alias ("br", "break", class_run, 1); | |
8414 | add_com_alias ("bre", "break", class_run, 1); | |
8415 | add_com_alias ("brea", "break", class_run, 1); | |
8416 | ||
502fd408 | 8417 | if (xdb_commands) |
c906108c SS |
8418 | { |
8419 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
8420 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
c906108c SS |
8421 | } |
8422 | ||
8423 | if (dbx_commands) | |
8424 | { | |
1bedd215 AC |
8425 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
8426 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
8427 | &stoplist, "stop ", 1, &cmdlist); |
8428 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 8429 | _("Break in function or address."), &stoplist); |
c5aa993b | 8430 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 8431 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
8432 | add_com ("status", class_info, breakpoints_info, _("\ |
8433 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8434 | The \"Type\" column indicates one of:\n\ |
8435 | \tbreakpoint - normal breakpoint\n\ | |
8436 | \twatchpoint - watchpoint\n\ | |
8437 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8438 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8439 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8440 | address and file/line number respectively.\n\ |
8441 | \n\ | |
8442 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8443 | are set to the address of the last breakpoint listed unless the command\n\ |
8444 | is prefixed with \"server \".\n\n\ | |
c906108c | 8445 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8446 | breakpoint set.")); |
c906108c SS |
8447 | } |
8448 | ||
1bedd215 AC |
8449 | add_info ("breakpoints", breakpoints_info, _("\ |
8450 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8451 | The \"Type\" column indicates one of:\n\ |
8452 | \tbreakpoint - normal breakpoint\n\ | |
8453 | \twatchpoint - watchpoint\n\ | |
8454 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8455 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8456 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8457 | address and file/line number respectively.\n\ |
8458 | \n\ | |
8459 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8460 | are set to the address of the last breakpoint listed unless the command\n\ |
8461 | is prefixed with \"server \".\n\n\ | |
c906108c | 8462 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8463 | breakpoint set.")); |
c906108c SS |
8464 | |
8465 | if (xdb_commands) | |
1bedd215 AC |
8466 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
8467 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8468 | The \"Type\" column indicates one of:\n\ |
8469 | \tbreakpoint - normal breakpoint\n\ | |
8470 | \twatchpoint - watchpoint\n\ | |
8471 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8472 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8473 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8474 | address and file/line number respectively.\n\ |
8475 | \n\ | |
8476 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8477 | are set to the address of the last breakpoint listed unless the command\n\ |
8478 | is prefixed with \"server \".\n\n\ | |
c906108c | 8479 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8480 | breakpoint set.")); |
c906108c | 8481 | |
1a966eab AC |
8482 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
8483 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8484 | The \"Type\" column indicates one of:\n\ |
8485 | \tbreakpoint - normal breakpoint\n\ | |
8486 | \twatchpoint - watchpoint\n\ | |
8487 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
8488 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
8489 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
8490 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
8491 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
8492 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
8493 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
8494 | address and file/line number respectively.\n\ |
8495 | \n\ | |
8496 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8497 | are set to the address of the last breakpoint listed unless the command\n\ |
8498 | is prefixed with \"server \".\n\n\ | |
c906108c | 8499 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 8500 | breakpoint set."), |
c906108c SS |
8501 | &maintenanceinfolist); |
8502 | ||
44feb3ce TT |
8503 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
8504 | Set catchpoints to catch events."), | |
8505 | &catch_cmdlist, "catch ", | |
8506 | 0/*allow-unknown*/, &cmdlist); | |
8507 | ||
8508 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
8509 | Set temporary catchpoints to catch events."), | |
8510 | &tcatch_cmdlist, "tcatch ", | |
8511 | 0/*allow-unknown*/, &cmdlist); | |
8512 | ||
8513 | /* Add catch and tcatch sub-commands. */ | |
8514 | add_catch_command ("catch", _("\ | |
8515 | Catch an exception, when caught.\n\ | |
8516 | With an argument, catch only exceptions with the given name."), | |
8517 | catch_catch_command, | |
8518 | CATCH_PERMANENT, | |
8519 | CATCH_TEMPORARY); | |
8520 | add_catch_command ("throw", _("\ | |
8521 | Catch an exception, when thrown.\n\ | |
8522 | With an argument, catch only exceptions with the given name."), | |
8523 | catch_throw_command, | |
8524 | CATCH_PERMANENT, | |
8525 | CATCH_TEMPORARY); | |
8526 | add_catch_command ("fork", _("Catch calls to fork."), | |
8527 | catch_fork_command_1, | |
8528 | (void *) (uintptr_t) catch_fork_permanent, | |
8529 | (void *) (uintptr_t) catch_fork_temporary); | |
8530 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
8531 | catch_fork_command_1, | |
8532 | (void *) (uintptr_t) catch_vfork_permanent, | |
8533 | (void *) (uintptr_t) catch_vfork_temporary); | |
8534 | add_catch_command ("exec", _("Catch calls to exec."), | |
8535 | catch_exec_command_1, | |
8536 | CATCH_PERMANENT, | |
8537 | CATCH_TEMPORARY); | |
8538 | add_catch_command ("load", _("\ | |
8539 | Catch library loads.\n\ | |
8540 | With an argument, catch only loads of that library."), | |
8541 | catch_load_command_1, | |
8542 | CATCH_PERMANENT, | |
8543 | CATCH_TEMPORARY); | |
8544 | add_catch_command ("unload", _("\ | |
8545 | Catch library unloads.\n\ | |
8546 | With an argument, catch only unloads of that library."), | |
8547 | catch_unload_command_1, | |
8548 | CATCH_PERMANENT, | |
8549 | CATCH_TEMPORARY); | |
8550 | add_catch_command ("exception", _("\ | |
8551 | Catch Ada exceptions, when raised.\n\ | |
8552 | With an argument, catch only exceptions with the given name."), | |
8553 | catch_ada_exception_command, | |
8554 | CATCH_PERMANENT, | |
8555 | CATCH_TEMPORARY); | |
8556 | add_catch_command ("assert", _("\ | |
8557 | Catch failed Ada assertions, when raised.\n\ | |
8558 | With an argument, catch only exceptions with the given name."), | |
8559 | catch_assert_command, | |
8560 | CATCH_PERMANENT, | |
8561 | CATCH_TEMPORARY); | |
c5aa993b | 8562 | |
1bedd215 AC |
8563 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
8564 | Set a watchpoint for an expression.\n\ | |
c906108c | 8565 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8566 | an expression changes.")); |
65d12d83 | 8567 | set_cmd_completer (c, expression_completer); |
c906108c | 8568 | |
1bedd215 AC |
8569 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
8570 | Set a read watchpoint for an expression.\n\ | |
c906108c | 8571 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8572 | an expression is read.")); |
65d12d83 | 8573 | set_cmd_completer (c, expression_completer); |
c906108c | 8574 | |
1bedd215 AC |
8575 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
8576 | Set a watchpoint for an expression.\n\ | |
c906108c | 8577 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8578 | an expression is either read or written.")); |
65d12d83 | 8579 | set_cmd_completer (c, expression_completer); |
c906108c SS |
8580 | |
8581 | add_info ("watchpoints", breakpoints_info, | |
1bedd215 | 8582 | _("Synonym for ``info breakpoints''.")); |
c906108c SS |
8583 | |
8584 | ||
920d2a44 AC |
8585 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
8586 | respond to changes - contrary to the description. */ | |
85c07804 AC |
8587 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
8588 | &can_use_hw_watchpoints, _("\ | |
8589 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
8590 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
8591 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
8592 | such is available. (However, any hardware watchpoints that were\n\ | |
8593 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
8594 | hardware.)"), |
8595 | NULL, | |
920d2a44 | 8596 | show_can_use_hw_watchpoints, |
85c07804 | 8597 | &setlist, &showlist); |
c906108c SS |
8598 | |
8599 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 8600 | |
1bedd215 | 8601 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
8602 | Breakpoint specific settings\n\ |
8603 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 8604 | pending breakpoint behavior"), |
fa8d40ab JJ |
8605 | &breakpoint_set_cmdlist, "set breakpoint ", |
8606 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 8607 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
8608 | Breakpoint specific settings\n\ |
8609 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 8610 | pending breakpoint behavior"), |
fa8d40ab JJ |
8611 | &breakpoint_show_cmdlist, "show breakpoint ", |
8612 | 0/*allow-unknown*/, &showlist); | |
8613 | ||
7915a72c AC |
8614 | add_setshow_auto_boolean_cmd ("pending", no_class, |
8615 | &pending_break_support, _("\ | |
8616 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
8617 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
8618 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
8619 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
8620 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 8621 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 8622 | NULL, |
920d2a44 | 8623 | show_pending_break_support, |
6e1d7d6c AC |
8624 | &breakpoint_set_cmdlist, |
8625 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
8626 | |
8627 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
8628 | |
8629 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
8630 | &automatic_hardware_breakpoints, _("\ | |
8631 | Set automatic usage of hardware breakpoints."), _("\ | |
8632 | Show automatic usage of hardware breakpoints."), _("\ | |
8633 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
8634 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
8635 | a warning will be emitted for such breakpoints."), | |
8636 | NULL, | |
8637 | show_automatic_hardware_breakpoints, | |
8638 | &breakpoint_set_cmdlist, | |
8639 | &breakpoint_show_cmdlist); | |
74960c60 | 8640 | |
33e5cbd6 PA |
8641 | add_setshow_enum_cmd ("always-inserted", class_support, |
8642 | always_inserted_enums, &always_inserted_mode, _("\ | |
74960c60 VP |
8643 | Set mode for inserting breakpoints."), _("\ |
8644 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
8645 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
8646 | resumed, and removed when execution stops. When this mode is on,\n\ | |
8647 | breakpoints are inserted immediately and removed only when the user\n\ | |
8648 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
8649 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
8650 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
8651 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
8652 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
74960c60 VP |
8653 | NULL, |
8654 | &show_always_inserted_mode, | |
8655 | &breakpoint_set_cmdlist, | |
8656 | &breakpoint_show_cmdlist); | |
765dc015 VP |
8657 | |
8658 | automatic_hardware_breakpoints = 1; | |
c906108c | 8659 | } |