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; |
1c5cfe86 | 1747 | int ix; |
c906108c | 1748 | |
075f6582 | 1749 | ALL_BP_LOCATIONS (bpt) |
514f746b AR |
1750 | if (bpt->owner->enable_state != bp_permanent) |
1751 | bpt->inserted = 0; | |
075f6582 | 1752 | |
c906108c | 1753 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 1754 | { |
c5aa993b JM |
1755 | switch (b->type) |
1756 | { | |
1757 | case bp_call_dummy: | |
1758 | case bp_watchpoint_scope: | |
c906108c | 1759 | |
c5aa993b JM |
1760 | /* If the call dummy breakpoint is at the entry point it will |
1761 | cause problems when the inferior is rerun, so we better | |
1762 | get rid of it. | |
c906108c | 1763 | |
c5aa993b JM |
1764 | Also get rid of scope breakpoints. */ |
1765 | delete_breakpoint (b); | |
1766 | break; | |
c906108c | 1767 | |
c5aa993b JM |
1768 | case bp_watchpoint: |
1769 | case bp_hardware_watchpoint: | |
1770 | case bp_read_watchpoint: | |
1771 | case bp_access_watchpoint: | |
c906108c | 1772 | |
c5aa993b JM |
1773 | /* Likewise for watchpoints on local expressions. */ |
1774 | if (b->exp_valid_block != NULL) | |
1775 | delete_breakpoint (b); | |
967af18d | 1776 | else if (context == inf_starting) |
c860120c PM |
1777 | { |
1778 | /* Reset val field to force reread of starting value | |
1779 | in insert_breakpoints. */ | |
1780 | if (b->val) | |
1781 | value_free (b->val); | |
1782 | b->val = NULL; | |
fa4727a6 | 1783 | b->val_valid = 0; |
c860120c | 1784 | } |
c5aa993b JM |
1785 | break; |
1786 | default: | |
c5aa993b JM |
1787 | break; |
1788 | } | |
1789 | } | |
1c5cfe86 PA |
1790 | |
1791 | /* Get rid of the moribund locations. */ | |
1792 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bpt); ++ix) | |
1793 | free_bp_location (bpt); | |
1794 | VEC_free (bp_location_p, moribund_locations); | |
c906108c SS |
1795 | } |
1796 | ||
c2c6d25f JM |
1797 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1798 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1799 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1800 | permanent breakpoint. | |
1801 | - When continuing from a location with an ordinary breakpoint, we | |
1802 | actually single step once before calling insert_breakpoints. | |
1803 | - When continuing from a localion with a permanent breakpoint, we | |
1804 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1805 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1806 | |
c2c6d25f | 1807 | enum breakpoint_here |
fba45db2 | 1808 | breakpoint_here_p (CORE_ADDR pc) |
c906108c | 1809 | { |
89f9893c | 1810 | const struct bp_location *bpt; |
c2c6d25f | 1811 | int any_breakpoint_here = 0; |
c906108c | 1812 | |
075f6582 DJ |
1813 | ALL_BP_LOCATIONS (bpt) |
1814 | { | |
1815 | if (bpt->loc_type != bp_loc_software_breakpoint | |
1816 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1817 | continue; | |
1818 | ||
468d015d | 1819 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1820 | || bpt->owner->enable_state == bp_permanent) |
1821 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1822 | { | |
1823 | if (overlay_debugging | |
1824 | && section_is_overlay (bpt->section) | |
1825 | && !section_is_mapped (bpt->section)) | |
1826 | continue; /* unmapped overlay -- can't be a match */ | |
1827 | else if (bpt->owner->enable_state == bp_permanent) | |
1828 | return permanent_breakpoint_here; | |
1829 | else | |
1830 | any_breakpoint_here = 1; | |
1831 | } | |
1832 | } | |
c906108c | 1833 | |
c2c6d25f | 1834 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1835 | } |
1836 | ||
1c5cfe86 PA |
1837 | /* Return true if there's a moribund breakpoint at PC. */ |
1838 | ||
1839 | int | |
1840 | moribund_breakpoint_here_p (CORE_ADDR pc) | |
1841 | { | |
1842 | struct bp_location *loc; | |
1843 | int ix; | |
1844 | ||
1845 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
1846 | if (loc->address == pc) | |
1847 | return 1; | |
1848 | ||
1849 | return 0; | |
1850 | } | |
c2c6d25f | 1851 | |
c36b740a VP |
1852 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
1853 | inserted using regular breakpoint_chain/bp_location_chain mechanism. | |
1854 | This does not check for single-step breakpoints, which are | |
1855 | inserted and removed using direct target manipulation. */ | |
c906108c SS |
1856 | |
1857 | int | |
c36b740a | 1858 | regular_breakpoint_inserted_here_p (CORE_ADDR pc) |
c906108c | 1859 | { |
89f9893c | 1860 | const struct bp_location *bpt; |
c906108c | 1861 | |
075f6582 | 1862 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1863 | { |
075f6582 DJ |
1864 | if (bpt->loc_type != bp_loc_software_breakpoint |
1865 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1866 | continue; | |
1867 | ||
1868 | if (bpt->inserted | |
1869 | && bpt->address == pc) /* bp is inserted and matches pc */ | |
1870 | { | |
1871 | if (overlay_debugging | |
1872 | && section_is_overlay (bpt->section) | |
1873 | && !section_is_mapped (bpt->section)) | |
1874 | continue; /* unmapped overlay -- can't be a match */ | |
1875 | else | |
1876 | return 1; | |
1877 | } | |
c5aa993b | 1878 | } |
c36b740a VP |
1879 | return 0; |
1880 | } | |
1881 | ||
1882 | /* Returns non-zero iff there's either regular breakpoint | |
1883 | or a single step breakpoint inserted at PC. */ | |
1884 | ||
1885 | int | |
1886 | breakpoint_inserted_here_p (CORE_ADDR pc) | |
1887 | { | |
1888 | if (regular_breakpoint_inserted_here_p (pc)) | |
1889 | return 1; | |
c906108c | 1890 | |
1aafd4da UW |
1891 | if (single_step_breakpoint_inserted_here_p (pc)) |
1892 | return 1; | |
1893 | ||
c906108c SS |
1894 | return 0; |
1895 | } | |
1896 | ||
4fa8626c DJ |
1897 | /* This function returns non-zero iff there is a software breakpoint |
1898 | inserted at PC. */ | |
1899 | ||
1900 | int | |
1901 | software_breakpoint_inserted_here_p (CORE_ADDR pc) | |
1902 | { | |
89f9893c | 1903 | const struct bp_location *bpt; |
4fa8626c DJ |
1904 | int any_breakpoint_here = 0; |
1905 | ||
1906 | ALL_BP_LOCATIONS (bpt) | |
1907 | { | |
1908 | if (bpt->loc_type != bp_loc_software_breakpoint) | |
1909 | continue; | |
1910 | ||
0d381245 | 1911 | if (bpt->inserted |
4fa8626c DJ |
1912 | && bpt->address == pc) /* bp is enabled and matches pc */ |
1913 | { | |
1914 | if (overlay_debugging | |
1915 | && section_is_overlay (bpt->section) | |
1916 | && !section_is_mapped (bpt->section)) | |
1917 | continue; /* unmapped overlay -- can't be a match */ | |
1918 | else | |
1919 | return 1; | |
1920 | } | |
1921 | } | |
1922 | ||
1aafd4da UW |
1923 | /* Also check for software single-step breakpoints. */ |
1924 | if (single_step_breakpoint_inserted_here_p (pc)) | |
1925 | return 1; | |
1926 | ||
4fa8626c DJ |
1927 | return 0; |
1928 | } | |
1929 | ||
075f6582 DJ |
1930 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
1931 | PC is valid for process/thread PTID. */ | |
c906108c SS |
1932 | |
1933 | int | |
39f77062 | 1934 | breakpoint_thread_match (CORE_ADDR pc, ptid_t ptid) |
c906108c | 1935 | { |
89f9893c | 1936 | const struct bp_location *bpt; |
c906108c SS |
1937 | int thread; |
1938 | ||
39f77062 | 1939 | thread = pid_to_thread_id (ptid); |
c906108c | 1940 | |
075f6582 | 1941 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1942 | { |
075f6582 DJ |
1943 | if (bpt->loc_type != bp_loc_software_breakpoint |
1944 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1945 | continue; | |
1946 | ||
468d015d | 1947 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1948 | || bpt->owner->enable_state == bp_permanent) |
1949 | && bpt->address == pc | |
1950 | && (bpt->owner->thread == -1 || bpt->owner->thread == thread)) | |
1951 | { | |
1952 | if (overlay_debugging | |
1953 | && section_is_overlay (bpt->section) | |
1954 | && !section_is_mapped (bpt->section)) | |
1955 | continue; /* unmapped overlay -- can't be a match */ | |
1956 | else | |
1957 | return 1; | |
1958 | } | |
c5aa993b | 1959 | } |
c906108c SS |
1960 | |
1961 | return 0; | |
1962 | } | |
c906108c | 1963 | \f |
c5aa993b | 1964 | |
c906108c SS |
1965 | /* bpstat stuff. External routines' interfaces are documented |
1966 | in breakpoint.h. */ | |
1967 | ||
1968 | int | |
fba45db2 | 1969 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c SS |
1970 | { |
1971 | return | |
1972 | (ep->type == bp_catch_load) | |
1973 | || (ep->type == bp_catch_unload) | |
1974 | || (ep->type == bp_catch_fork) | |
1975 | || (ep->type == bp_catch_vfork) | |
dfdfb3ca | 1976 | || (ep->type == bp_catch_exec); |
c906108c | 1977 | |
c5aa993b | 1978 | /* ??rehrauer: Add more kinds here, as are implemented... */ |
c906108c | 1979 | } |
c5aa993b | 1980 | |
c906108c | 1981 | int |
fba45db2 | 1982 | ep_is_shlib_catchpoint (struct breakpoint *ep) |
c906108c SS |
1983 | { |
1984 | return | |
1985 | (ep->type == bp_catch_load) | |
d85310f7 | 1986 | || (ep->type == bp_catch_unload); |
c906108c SS |
1987 | } |
1988 | ||
198757a8 VP |
1989 | void |
1990 | bpstat_free (bpstat bs) | |
1991 | { | |
1992 | if (bs->old_val != NULL) | |
1993 | value_free (bs->old_val); | |
1994 | free_command_lines (&bs->commands); | |
1995 | xfree (bs); | |
1996 | } | |
1997 | ||
c906108c SS |
1998 | /* Clear a bpstat so that it says we are not at any breakpoint. |
1999 | Also free any storage that is part of a bpstat. */ | |
2000 | ||
2001 | void | |
fba45db2 | 2002 | bpstat_clear (bpstat *bsp) |
c906108c SS |
2003 | { |
2004 | bpstat p; | |
2005 | bpstat q; | |
2006 | ||
2007 | if (bsp == 0) | |
2008 | return; | |
2009 | p = *bsp; | |
2010 | while (p != NULL) | |
2011 | { | |
2012 | q = p->next; | |
198757a8 | 2013 | bpstat_free (p); |
c906108c SS |
2014 | p = q; |
2015 | } | |
2016 | *bsp = NULL; | |
2017 | } | |
2018 | ||
2019 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
2020 | is part of the bpstat is copied as well. */ | |
2021 | ||
2022 | bpstat | |
fba45db2 | 2023 | bpstat_copy (bpstat bs) |
c906108c SS |
2024 | { |
2025 | bpstat p = NULL; | |
2026 | bpstat tmp; | |
2027 | bpstat retval = NULL; | |
2028 | ||
2029 | if (bs == NULL) | |
2030 | return bs; | |
2031 | ||
2032 | for (; bs != NULL; bs = bs->next) | |
2033 | { | |
2034 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
2035 | memcpy (tmp, bs, sizeof (*tmp)); | |
31cc81e9 DJ |
2036 | if (bs->commands != NULL) |
2037 | tmp->commands = copy_command_lines (bs->commands); | |
2038 | if (bs->old_val != NULL) | |
3c3185ac JK |
2039 | { |
2040 | tmp->old_val = value_copy (bs->old_val); | |
2041 | release_value (tmp->old_val); | |
2042 | } | |
31cc81e9 | 2043 | |
c906108c SS |
2044 | if (p == NULL) |
2045 | /* This is the first thing in the chain. */ | |
2046 | retval = tmp; | |
2047 | else | |
2048 | p->next = tmp; | |
2049 | p = tmp; | |
2050 | } | |
2051 | p->next = NULL; | |
2052 | return retval; | |
2053 | } | |
2054 | ||
2055 | /* Find the bpstat associated with this breakpoint */ | |
2056 | ||
2057 | bpstat | |
fba45db2 | 2058 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 2059 | { |
c5aa993b JM |
2060 | if (bsp == NULL) |
2061 | return NULL; | |
c906108c | 2062 | |
c5aa993b JM |
2063 | for (; bsp != NULL; bsp = bsp->next) |
2064 | { | |
4f8d1dc6 | 2065 | if (bsp->breakpoint_at && bsp->breakpoint_at->owner == breakpoint) |
c5aa993b JM |
2066 | return bsp; |
2067 | } | |
c906108c SS |
2068 | return NULL; |
2069 | } | |
2070 | ||
2071 | /* Find a step_resume breakpoint associated with this bpstat. | |
2072 | (If there are multiple step_resume bp's on the list, this function | |
2073 | will arbitrarily pick one.) | |
2074 | ||
2075 | It is an error to use this function if BPSTAT doesn't contain a | |
2076 | step_resume breakpoint. | |
2077 | ||
2078 | See wait_for_inferior's use of this function. */ | |
2079 | struct breakpoint * | |
fba45db2 | 2080 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c | 2081 | { |
8601f500 MS |
2082 | int current_thread; |
2083 | ||
8a3fe4f8 | 2084 | gdb_assert (bsp != NULL); |
c906108c | 2085 | |
8601f500 MS |
2086 | current_thread = pid_to_thread_id (inferior_ptid); |
2087 | ||
c906108c SS |
2088 | for (; bsp != NULL; bsp = bsp->next) |
2089 | { | |
2090 | if ((bsp->breakpoint_at != NULL) && | |
4f8d1dc6 VP |
2091 | (bsp->breakpoint_at->owner->type == bp_step_resume) && |
2092 | (bsp->breakpoint_at->owner->thread == current_thread || | |
2093 | bsp->breakpoint_at->owner->thread == -1)) | |
2094 | return bsp->breakpoint_at->owner; | |
c906108c SS |
2095 | } |
2096 | ||
8a3fe4f8 | 2097 | internal_error (__FILE__, __LINE__, _("No step_resume breakpoint found.")); |
c906108c SS |
2098 | } |
2099 | ||
2100 | ||
8671a17b | 2101 | /* Put in *NUM the breakpoint number of the first breakpoint we are stopped |
c906108c SS |
2102 | at. *BSP upon return is a bpstat which points to the remaining |
2103 | breakpoints stopped at (but which is not guaranteed to be good for | |
2104 | anything but further calls to bpstat_num). | |
8671a17b PA |
2105 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
2106 | Return -1 if stopped at a breakpoint that has been deleted since | |
2107 | we set it. | |
2108 | Return 1 otherwise. */ | |
c906108c SS |
2109 | |
2110 | int | |
8671a17b | 2111 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
2112 | { |
2113 | struct breakpoint *b; | |
2114 | ||
2115 | if ((*bsp) == NULL) | |
2116 | return 0; /* No more breakpoint values */ | |
8671a17b | 2117 | |
4f8d1dc6 VP |
2118 | /* We assume we'll never have several bpstats that |
2119 | correspond to a single breakpoint -- otherwise, | |
2120 | this function might return the same number more | |
2121 | than once and this will look ugly. */ | |
2122 | b = (*bsp)->breakpoint_at ? (*bsp)->breakpoint_at->owner : NULL; | |
8671a17b PA |
2123 | *bsp = (*bsp)->next; |
2124 | if (b == NULL) | |
2125 | return -1; /* breakpoint that's been deleted since */ | |
2126 | ||
2127 | *num = b->number; /* We have its number */ | |
2128 | return 1; | |
c906108c SS |
2129 | } |
2130 | ||
2131 | /* Modify BS so that the actions will not be performed. */ | |
2132 | ||
2133 | void | |
fba45db2 | 2134 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
2135 | { |
2136 | for (; bs != NULL; bs = bs->next) | |
2137 | { | |
c2b8ed2c | 2138 | free_command_lines (&bs->commands); |
c906108c SS |
2139 | if (bs->old_val != NULL) |
2140 | { | |
2141 | value_free (bs->old_val); | |
2142 | bs->old_val = NULL; | |
2143 | } | |
2144 | } | |
2145 | } | |
2146 | ||
2147 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ | |
c906108c | 2148 | static void |
4efb68b1 | 2149 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
2150 | { |
2151 | executing_breakpoint_commands = 0; | |
2152 | } | |
2153 | ||
2154 | /* Execute all the commands associated with all the breakpoints at this | |
2155 | location. Any of these commands could cause the process to proceed | |
2156 | beyond this point, etc. We look out for such changes by checking | |
347bddb7 | 2157 | the global "breakpoint_proceeded" after each command. |
c906108c | 2158 | |
347bddb7 PA |
2159 | Returns true if a breakpoint command resumed the inferior. In that |
2160 | case, it is the caller's responsibility to recall it again with the | |
2161 | bpstat of the current thread. */ | |
2162 | ||
2163 | static int | |
2164 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
2165 | { |
2166 | bpstat bs; | |
2167 | struct cleanup *old_chain; | |
347bddb7 | 2168 | int again = 0; |
c906108c SS |
2169 | |
2170 | /* Avoid endless recursion if a `source' command is contained | |
2171 | in bs->commands. */ | |
2172 | if (executing_breakpoint_commands) | |
347bddb7 | 2173 | return 0; |
c906108c SS |
2174 | |
2175 | executing_breakpoint_commands = 1; | |
2176 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
2177 | ||
c906108c SS |
2178 | /* This pointer will iterate over the list of bpstat's. */ |
2179 | bs = *bsp; | |
2180 | ||
2181 | breakpoint_proceeded = 0; | |
2182 | for (; bs != NULL; bs = bs->next) | |
2183 | { | |
6c50ab1c JB |
2184 | struct command_line *cmd; |
2185 | struct cleanup *this_cmd_tree_chain; | |
2186 | ||
2187 | /* Take ownership of the BSP's command tree, if it has one. | |
2188 | ||
2189 | The command tree could legitimately contain commands like | |
2190 | 'step' and 'next', which call clear_proceed_status, which | |
2191 | frees stop_bpstat's command tree. To make sure this doesn't | |
2192 | free the tree we're executing out from under us, we need to | |
2193 | take ownership of the tree ourselves. Since a given bpstat's | |
2194 | commands are only executed once, we don't need to copy it; we | |
2195 | can clear the pointer in the bpstat, and make sure we free | |
2196 | the tree when we're done. */ | |
c906108c | 2197 | cmd = bs->commands; |
6c50ab1c JB |
2198 | bs->commands = 0; |
2199 | this_cmd_tree_chain = make_cleanup_free_command_lines (&cmd); | |
2200 | ||
c906108c SS |
2201 | while (cmd != NULL) |
2202 | { | |
2203 | execute_control_command (cmd); | |
2204 | ||
2205 | if (breakpoint_proceeded) | |
2206 | break; | |
2207 | else | |
2208 | cmd = cmd->next; | |
2209 | } | |
6c50ab1c JB |
2210 | |
2211 | /* We can free this command tree now. */ | |
2212 | do_cleanups (this_cmd_tree_chain); | |
2213 | ||
c906108c | 2214 | if (breakpoint_proceeded) |
32c1e744 VP |
2215 | { |
2216 | if (target_can_async_p ()) | |
347bddb7 PA |
2217 | /* If we are in async mode, then the target might be still |
2218 | running, not stopped at any breakpoint, so nothing for | |
2219 | us to do here -- just return to the event loop. */ | |
2220 | ; | |
32c1e744 VP |
2221 | else |
2222 | /* In sync mode, when execute_control_command returns | |
2223 | we're already standing on the next breakpoint. | |
347bddb7 PA |
2224 | Breakpoint commands for that stop were not run, since |
2225 | execute_command does not run breakpoint commands -- | |
2226 | only command_line_handler does, but that one is not | |
2227 | involved in execution of breakpoint commands. So, we | |
2228 | can now execute breakpoint commands. It should be | |
2229 | noted that making execute_command do bpstat actions is | |
2230 | not an option -- in this case we'll have recursive | |
2231 | invocation of bpstat for each breakpoint with a | |
2232 | command, and can easily blow up GDB stack. Instead, we | |
2233 | return true, which will trigger the caller to recall us | |
2234 | with the new stop_bpstat. */ | |
2235 | again = 1; | |
2236 | break; | |
32c1e744 | 2237 | } |
c906108c | 2238 | } |
c2b8ed2c | 2239 | do_cleanups (old_chain); |
347bddb7 PA |
2240 | return again; |
2241 | } | |
2242 | ||
2243 | void | |
2244 | bpstat_do_actions (void) | |
2245 | { | |
2246 | /* Do any commands attached to breakpoint we are stopped at. */ | |
2247 | while (!ptid_equal (inferior_ptid, null_ptid) | |
2248 | && target_has_execution | |
2249 | && !is_exited (inferior_ptid) | |
2250 | && !is_executing (inferior_ptid)) | |
2251 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
2252 | and only return when it is stopped at the next breakpoint, we | |
2253 | keep doing breakpoint actions until it returns false to | |
2254 | indicate the inferior was not resumed. */ | |
2255 | if (!bpstat_do_actions_1 (&inferior_thread ()->stop_bpstat)) | |
2256 | break; | |
c906108c SS |
2257 | } |
2258 | ||
fa4727a6 DJ |
2259 | /* Print out the (old or new) value associated with a watchpoint. */ |
2260 | ||
2261 | static void | |
2262 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
2263 | { | |
2264 | if (val == NULL) | |
2265 | fprintf_unfiltered (stream, _("<unreadable>")); | |
2266 | else | |
2267 | value_print (val, stream, 0, Val_pretty_default); | |
2268 | } | |
2269 | ||
e514a9d6 | 2270 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 2271 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
2272 | by having it set different print_it values. |
2273 | ||
2274 | Current scheme: When we stop, bpstat_print() is called. It loops | |
2275 | through the bpstat list of things causing this stop, calling the | |
2276 | print_bp_stop_message function on each one. The behavior of the | |
2277 | print_bp_stop_message function depends on the print_it field of | |
2278 | bpstat. If such field so indicates, call this function here. | |
2279 | ||
2280 | Return values from this routine (ultimately used by bpstat_print() | |
2281 | and normal_stop() to decide what to do): | |
2282 | PRINT_NOTHING: Means we already printed all we needed to print, | |
2283 | don't print anything else. | |
2284 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
2285 | that something to be followed by a location. | |
2286 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
2287 | that something to be followed by a location. | |
2288 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
2289 | analysis. */ | |
c906108c | 2290 | |
917317f4 | 2291 | static enum print_stop_action |
fba45db2 | 2292 | print_it_typical (bpstat bs) |
c906108c | 2293 | { |
3b31d625 | 2294 | struct cleanup *old_chain, *ui_out_chain; |
4f8d1dc6 | 2295 | struct breakpoint *b; |
89f9893c | 2296 | const struct bp_location *bl; |
8b93c638 | 2297 | struct ui_stream *stb; |
2cec12e5 | 2298 | int bp_temp = 0; |
8b93c638 | 2299 | stb = ui_out_stream_new (uiout); |
b02eeafb | 2300 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c SS |
2301 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
2302 | which has since been deleted. */ | |
e514a9d6 | 2303 | if (bs->breakpoint_at == NULL) |
917317f4 | 2304 | return PRINT_UNKNOWN; |
0d381245 VP |
2305 | bl = bs->breakpoint_at; |
2306 | b = bl->owner; | |
c906108c | 2307 | |
4f8d1dc6 | 2308 | switch (b->type) |
c906108c | 2309 | { |
e514a9d6 JM |
2310 | case bp_breakpoint: |
2311 | case bp_hardware_breakpoint: | |
2cec12e5 | 2312 | bp_temp = bs->breakpoint_at->owner->disposition == disp_del; |
0d381245 VP |
2313 | if (bl->address != bl->requested_address) |
2314 | breakpoint_adjustment_warning (bl->requested_address, | |
2315 | bl->address, | |
4f8d1dc6 VP |
2316 | b->number, 1); |
2317 | annotate_breakpoint (b->number); | |
2cec12e5 AR |
2318 | if (bp_temp) |
2319 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
2320 | else | |
2321 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 2322 | if (ui_out_is_mi_like_p (uiout)) |
2cec12e5 AR |
2323 | { |
2324 | ui_out_field_string (uiout, "reason", | |
2325 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
2326 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
2327 | } | |
4f8d1dc6 | 2328 | ui_out_field_int (uiout, "bkptno", b->number); |
8b93c638 JM |
2329 | ui_out_text (uiout, ", "); |
2330 | return PRINT_SRC_AND_LOC; | |
e514a9d6 JM |
2331 | break; |
2332 | ||
2333 | case bp_shlib_event: | |
917317f4 JM |
2334 | /* Did we stop because the user set the stop_on_solib_events |
2335 | variable? (If so, we report this as a generic, "Stopped due | |
2336 | to shlib event" message.) */ | |
a3f17187 | 2337 | printf_filtered (_("Stopped due to shared library event\n")); |
e514a9d6 JM |
2338 | return PRINT_NOTHING; |
2339 | break; | |
2340 | ||
c4093a6a JM |
2341 | case bp_thread_event: |
2342 | /* Not sure how we will get here. | |
2343 | GDB should not stop for these breakpoints. */ | |
a3f17187 | 2344 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); |
c4093a6a JM |
2345 | return PRINT_NOTHING; |
2346 | break; | |
2347 | ||
1900040c MS |
2348 | case bp_overlay_event: |
2349 | /* By analogy with the thread event, GDB should not stop for these. */ | |
a3f17187 | 2350 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
1900040c MS |
2351 | return PRINT_NOTHING; |
2352 | break; | |
2353 | ||
e514a9d6 | 2354 | case bp_catch_load: |
4f8d1dc6 | 2355 | annotate_catchpoint (b->number); |
a3f17187 | 2356 | printf_filtered (_("\nCatchpoint %d (loaded %s), "), |
4f8d1dc6 VP |
2357 | b->number, |
2358 | b->triggered_dll_pathname); | |
e514a9d6 JM |
2359 | return PRINT_SRC_AND_LOC; |
2360 | break; | |
2361 | ||
2362 | case bp_catch_unload: | |
4f8d1dc6 | 2363 | annotate_catchpoint (b->number); |
a3f17187 | 2364 | printf_filtered (_("\nCatchpoint %d (unloaded %s), "), |
4f8d1dc6 VP |
2365 | b->number, |
2366 | b->triggered_dll_pathname); | |
e514a9d6 JM |
2367 | return PRINT_SRC_AND_LOC; |
2368 | break; | |
2369 | ||
2370 | case bp_catch_fork: | |
4f8d1dc6 | 2371 | annotate_catchpoint (b->number); |
a3f17187 | 2372 | printf_filtered (_("\nCatchpoint %d (forked process %d), "), |
4f8d1dc6 | 2373 | b->number, |
3a3e9ee3 | 2374 | ptid_get_pid (b->forked_inferior_pid)); |
917317f4 | 2375 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2376 | break; |
2377 | ||
2378 | case bp_catch_vfork: | |
4f8d1dc6 | 2379 | annotate_catchpoint (b->number); |
a3f17187 | 2380 | printf_filtered (_("\nCatchpoint %d (vforked process %d), "), |
4f8d1dc6 | 2381 | b->number, |
3a3e9ee3 | 2382 | ptid_get_pid (b->forked_inferior_pid)); |
e514a9d6 JM |
2383 | return PRINT_SRC_AND_LOC; |
2384 | break; | |
2385 | ||
2386 | case bp_catch_exec: | |
4f8d1dc6 | 2387 | annotate_catchpoint (b->number); |
a3f17187 | 2388 | printf_filtered (_("\nCatchpoint %d (exec'd %s), "), |
4f8d1dc6 VP |
2389 | b->number, |
2390 | b->exec_pathname); | |
917317f4 | 2391 | return PRINT_SRC_AND_LOC; |
e514a9d6 JM |
2392 | break; |
2393 | ||
e514a9d6 JM |
2394 | case bp_watchpoint: |
2395 | case bp_hardware_watchpoint: | |
fa4727a6 DJ |
2396 | annotate_watchpoint (b->number); |
2397 | if (ui_out_is_mi_like_p (uiout)) | |
2398 | ui_out_field_string | |
2399 | (uiout, "reason", | |
2400 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
2401 | mention (b); | |
2402 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
2403 | ui_out_text (uiout, "\nOld value = "); | |
2404 | watchpoint_value_print (bs->old_val, stb->stream); | |
2405 | ui_out_field_stream (uiout, "old", stb); | |
2406 | ui_out_text (uiout, "\nNew value = "); | |
2407 | watchpoint_value_print (b->val, stb->stream); | |
2408 | ui_out_field_stream (uiout, "new", stb); | |
2409 | do_cleanups (ui_out_chain); | |
2410 | ui_out_text (uiout, "\n"); | |
e514a9d6 JM |
2411 | /* More than one watchpoint may have been triggered. */ |
2412 | return PRINT_UNKNOWN; | |
2413 | break; | |
2414 | ||
2415 | case bp_read_watchpoint: | |
9dc5e2a9 | 2416 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2417 | ui_out_field_string |
2418 | (uiout, "reason", | |
2419 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 2420 | mention (b); |
3b31d625 | 2421 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 2422 | ui_out_text (uiout, "\nValue = "); |
fa4727a6 | 2423 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 2424 | ui_out_field_stream (uiout, "value", stb); |
3b31d625 | 2425 | do_cleanups (ui_out_chain); |
8b93c638 | 2426 | ui_out_text (uiout, "\n"); |
917317f4 | 2427 | return PRINT_UNKNOWN; |
e514a9d6 JM |
2428 | break; |
2429 | ||
2430 | case bp_access_watchpoint: | |
fa4727a6 | 2431 | if (bs->old_val != NULL) |
8b93c638 | 2432 | { |
4f8d1dc6 | 2433 | annotate_watchpoint (b->number); |
9dc5e2a9 | 2434 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2435 | ui_out_field_string |
2436 | (uiout, "reason", | |
2437 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 2438 | mention (b); |
3b31d625 | 2439 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 2440 | ui_out_text (uiout, "\nOld value = "); |
fa4727a6 | 2441 | watchpoint_value_print (bs->old_val, stb->stream); |
8b93c638 | 2442 | ui_out_field_stream (uiout, "old", stb); |
8b93c638 JM |
2443 | ui_out_text (uiout, "\nNew value = "); |
2444 | } | |
2445 | else | |
2446 | { | |
4f8d1dc6 | 2447 | mention (b); |
9dc5e2a9 | 2448 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2449 | ui_out_field_string |
2450 | (uiout, "reason", | |
2451 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
3b31d625 | 2452 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2453 | ui_out_text (uiout, "\nValue = "); |
2454 | } | |
fa4727a6 | 2455 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 2456 | ui_out_field_stream (uiout, "new", stb); |
3b31d625 | 2457 | do_cleanups (ui_out_chain); |
8b93c638 | 2458 | ui_out_text (uiout, "\n"); |
917317f4 | 2459 | return PRINT_UNKNOWN; |
e514a9d6 | 2460 | break; |
4ce44c66 | 2461 | |
e514a9d6 JM |
2462 | /* Fall through, we don't deal with these types of breakpoints |
2463 | here. */ | |
2464 | ||
11cf8741 | 2465 | case bp_finish: |
9dc5e2a9 | 2466 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2467 | ui_out_field_string |
2468 | (uiout, "reason", | |
2469 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
8b93c638 JM |
2470 | return PRINT_UNKNOWN; |
2471 | break; | |
2472 | ||
e514a9d6 | 2473 | case bp_until: |
9dc5e2a9 | 2474 | if (ui_out_is_mi_like_p (uiout)) |
1fbc2a49 NR |
2475 | ui_out_field_string |
2476 | (uiout, "reason", | |
2477 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
8b93c638 JM |
2478 | return PRINT_UNKNOWN; |
2479 | break; | |
2480 | ||
c2d11a7d | 2481 | case bp_none: |
e514a9d6 JM |
2482 | case bp_longjmp: |
2483 | case bp_longjmp_resume: | |
2484 | case bp_step_resume: | |
e514a9d6 JM |
2485 | case bp_watchpoint_scope: |
2486 | case bp_call_dummy: | |
2487 | default: | |
2488 | return PRINT_UNKNOWN; | |
2489 | } | |
2490 | } | |
2491 | ||
2492 | /* Generic routine for printing messages indicating why we | |
2493 | stopped. The behavior of this function depends on the value | |
2494 | 'print_it' in the bpstat structure. Under some circumstances we | |
2495 | may decide not to print anything here and delegate the task to | |
2496 | normal_stop(). */ | |
2497 | ||
2498 | static enum print_stop_action | |
2499 | print_bp_stop_message (bpstat bs) | |
2500 | { | |
2501 | switch (bs->print_it) | |
2502 | { | |
2503 | case print_it_noop: | |
2504 | /* Nothing should be printed for this bpstat entry. */ | |
2505 | return PRINT_UNKNOWN; | |
2506 | break; | |
2507 | ||
2508 | case print_it_done: | |
2509 | /* We still want to print the frame, but we already printed the | |
2510 | relevant messages. */ | |
2511 | return PRINT_SRC_AND_LOC; | |
2512 | break; | |
2513 | ||
2514 | case print_it_normal: | |
4f8d1dc6 | 2515 | { |
89f9893c | 2516 | const struct bp_location *bl = bs->breakpoint_at; |
4f8d1dc6 VP |
2517 | struct breakpoint *b = bl ? bl->owner : NULL; |
2518 | ||
2519 | /* Normal case. Call the breakpoint's print_it method, or | |
2520 | print_it_typical. */ | |
2521 | /* FIXME: how breakpoint can ever be NULL here? */ | |
2522 | if (b != NULL && b->ops != NULL && b->ops->print_it != NULL) | |
2523 | return b->ops->print_it (b); | |
2524 | else | |
2525 | return print_it_typical (bs); | |
2526 | } | |
2527 | break; | |
3086aeae | 2528 | |
e514a9d6 | 2529 | default: |
8e65ff28 | 2530 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2531 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 2532 | break; |
c906108c | 2533 | } |
c906108c SS |
2534 | } |
2535 | ||
e514a9d6 JM |
2536 | /* Print a message indicating what happened. This is called from |
2537 | normal_stop(). The input to this routine is the head of the bpstat | |
2538 | list - a list of the eventpoints that caused this stop. This | |
2539 | routine calls the generic print routine for printing a message | |
2540 | about reasons for stopping. This will print (for example) the | |
2541 | "Breakpoint n," part of the output. The return value of this | |
2542 | routine is one of: | |
c906108c | 2543 | |
917317f4 JM |
2544 | PRINT_UNKNOWN: Means we printed nothing |
2545 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2546 | code to print the location. An example is |
2547 | "Breakpoint 1, " which should be followed by | |
2548 | the location. | |
917317f4 | 2549 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2550 | to also print the location part of the message. |
2551 | An example is the catch/throw messages, which | |
917317f4 JM |
2552 | don't require a location appended to the end. |
2553 | PRINT_NOTHING: We have done some printing and we don't need any | |
2554 | further info to be printed.*/ | |
c906108c | 2555 | |
917317f4 | 2556 | enum print_stop_action |
fba45db2 | 2557 | bpstat_print (bpstat bs) |
c906108c SS |
2558 | { |
2559 | int val; | |
c5aa993b | 2560 | |
c906108c | 2561 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2562 | (Currently all watchpoints go on the bpstat whether hit or not. |
2563 | That probably could (should) be changed, provided care is taken | |
c906108c | 2564 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2565 | for (; bs; bs = bs->next) |
2566 | { | |
2567 | val = print_bp_stop_message (bs); | |
2568 | if (val == PRINT_SRC_ONLY | |
2569 | || val == PRINT_SRC_AND_LOC | |
2570 | || val == PRINT_NOTHING) | |
2571 | return val; | |
2572 | } | |
c906108c | 2573 | |
e514a9d6 JM |
2574 | /* We reached the end of the chain, or we got a null BS to start |
2575 | with and nothing was printed. */ | |
917317f4 | 2576 | return PRINT_UNKNOWN; |
c906108c SS |
2577 | } |
2578 | ||
2579 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2580 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2581 | The argument is a "struct expression *" that has been cast to char * to | |
2582 | make it pass through catch_errors. */ | |
2583 | ||
2584 | static int | |
4efb68b1 | 2585 | breakpoint_cond_eval (void *exp) |
c906108c | 2586 | { |
278cd55f | 2587 | struct value *mark = value_mark (); |
c5aa993b | 2588 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2589 | value_free_to_mark (mark); |
2590 | return i; | |
2591 | } | |
2592 | ||
2593 | /* Allocate a new bpstat and chain it to the current one. */ | |
2594 | ||
2595 | static bpstat | |
89f9893c | 2596 | bpstat_alloc (const struct bp_location *bl, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
2597 | { |
2598 | bpstat bs; | |
2599 | ||
2600 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2601 | cbs->next = bs; | |
4f8d1dc6 | 2602 | bs->breakpoint_at = bl; |
c906108c SS |
2603 | /* If the condition is false, etc., don't do the commands. */ |
2604 | bs->commands = NULL; | |
2605 | bs->old_val = NULL; | |
2606 | bs->print_it = print_it_normal; | |
2607 | return bs; | |
2608 | } | |
2609 | \f | |
d983da9c DJ |
2610 | /* The target has stopped with waitstatus WS. Check if any hardware |
2611 | watchpoints have triggered, according to the target. */ | |
2612 | ||
2613 | int | |
2614 | watchpoints_triggered (struct target_waitstatus *ws) | |
2615 | { | |
2616 | int stopped_by_watchpoint = STOPPED_BY_WATCHPOINT (*ws); | |
2617 | CORE_ADDR addr; | |
2618 | struct breakpoint *b; | |
2619 | ||
2620 | if (!stopped_by_watchpoint) | |
2621 | { | |
2622 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
2623 | as not triggered. */ | |
2624 | ALL_BREAKPOINTS (b) | |
2625 | if (b->type == bp_hardware_watchpoint | |
2626 | || b->type == bp_read_watchpoint | |
2627 | || b->type == bp_access_watchpoint) | |
2628 | b->watchpoint_triggered = watch_triggered_no; | |
2629 | ||
2630 | return 0; | |
2631 | } | |
2632 | ||
2633 | if (!target_stopped_data_address (¤t_target, &addr)) | |
2634 | { | |
2635 | /* We were stopped by a watchpoint, but we don't know where. | |
2636 | Mark all watchpoints as unknown. */ | |
2637 | ALL_BREAKPOINTS (b) | |
2638 | if (b->type == bp_hardware_watchpoint | |
2639 | || b->type == bp_read_watchpoint | |
2640 | || b->type == bp_access_watchpoint) | |
2641 | b->watchpoint_triggered = watch_triggered_unknown; | |
2642 | ||
2643 | return stopped_by_watchpoint; | |
2644 | } | |
2645 | ||
2646 | /* The target could report the data address. Mark watchpoints | |
2647 | affected by this data address as triggered, and all others as not | |
2648 | triggered. */ | |
2649 | ||
2650 | ALL_BREAKPOINTS (b) | |
2651 | if (b->type == bp_hardware_watchpoint | |
2652 | || b->type == bp_read_watchpoint | |
2653 | || b->type == bp_access_watchpoint) | |
2654 | { | |
a5606eee | 2655 | struct bp_location *loc; |
d983da9c DJ |
2656 | struct value *v; |
2657 | ||
2658 | b->watchpoint_triggered = watch_triggered_no; | |
a5606eee VP |
2659 | for (loc = b->loc; loc; loc = loc->next) |
2660 | /* Exact match not required. Within range is | |
2661 | sufficient. */ | |
5009afc5 AS |
2662 | if (target_watchpoint_addr_within_range (¤t_target, |
2663 | addr, loc->address, | |
2664 | loc->length)) | |
a5606eee VP |
2665 | { |
2666 | b->watchpoint_triggered = watch_triggered_yes; | |
2667 | break; | |
2668 | } | |
d983da9c DJ |
2669 | } |
2670 | ||
2671 | return 1; | |
2672 | } | |
2673 | ||
c906108c SS |
2674 | /* Possible return values for watchpoint_check (this can't be an enum |
2675 | because of check_errors). */ | |
2676 | /* The watchpoint has been deleted. */ | |
2677 | #define WP_DELETED 1 | |
2678 | /* The value has changed. */ | |
2679 | #define WP_VALUE_CHANGED 2 | |
2680 | /* The value has not changed. */ | |
2681 | #define WP_VALUE_NOT_CHANGED 3 | |
2682 | ||
2683 | #define BP_TEMPFLAG 1 | |
2684 | #define BP_HARDWAREFLAG 2 | |
2685 | ||
2686 | /* Check watchpoint condition. */ | |
2687 | ||
2688 | static int | |
4efb68b1 | 2689 | watchpoint_check (void *p) |
c906108c SS |
2690 | { |
2691 | bpstat bs = (bpstat) p; | |
2692 | struct breakpoint *b; | |
2693 | struct frame_info *fr; | |
2694 | int within_current_scope; | |
2695 | ||
4f8d1dc6 | 2696 | b = bs->breakpoint_at->owner; |
c906108c SS |
2697 | |
2698 | if (b->exp_valid_block == NULL) | |
2699 | within_current_scope = 1; | |
2700 | else | |
2701 | { | |
2702 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2703 | any chance of handling watchpoints on local variables, we'll need |
2704 | the frame chain (so we can determine if we're in scope). */ | |
2705 | reinit_frame_cache (); | |
101dcfbe | 2706 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 2707 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
2708 | |
2709 | /* If we've gotten confused in the unwinder, we might have | |
2710 | returned a frame that can't describe this variable. */ | |
2711 | if (within_current_scope | |
7f0df278 DJ |
2712 | && (block_linkage_function (b->exp_valid_block) |
2713 | != get_frame_function (fr))) | |
69fbadd5 DJ |
2714 | within_current_scope = 0; |
2715 | ||
c12260ac CV |
2716 | /* in_function_epilogue_p() returns a non-zero value if we're still |
2717 | in the function but the stack frame has already been invalidated. | |
2718 | Since we can't rely on the values of local variables after the | |
2719 | stack has been destroyed, we are treating the watchpoint in that | |
a957e642 CV |
2720 | state as `not changed' without further checking. |
2721 | ||
2722 | vinschen/2003-09-04: The former implementation left out the case | |
2723 | that the watchpoint frame couldn't be found by frame_find_by_id() | |
2724 | because the current PC is currently in an epilogue. Calling | |
2725 | gdbarch_in_function_epilogue_p() also when fr == NULL fixes that. */ | |
a6fbcf2f | 2726 | if ((!within_current_scope || fr == get_current_frame ()) |
c12260ac CV |
2727 | && gdbarch_in_function_epilogue_p (current_gdbarch, read_pc ())) |
2728 | return WP_VALUE_NOT_CHANGED; | |
a6fbcf2f | 2729 | if (fr && within_current_scope) |
c906108c SS |
2730 | /* If we end up stopping, the current frame will get selected |
2731 | in normal_stop. So this call to select_frame won't affect | |
2732 | the user. */ | |
0f7d239c | 2733 | select_frame (fr); |
c906108c | 2734 | } |
c5aa993b | 2735 | |
c906108c SS |
2736 | if (within_current_scope) |
2737 | { | |
2738 | /* We use value_{,free_to_}mark because it could be a | |
2739 | *long* time before we return to the command level and | |
c5aa993b JM |
2740 | call free_all_values. We can't call free_all_values because |
2741 | we might be in the middle of evaluating a function call. */ | |
c906108c | 2742 | |
278cd55f | 2743 | struct value *mark = value_mark (); |
fa4727a6 DJ |
2744 | struct value *new_val; |
2745 | ||
2746 | fetch_watchpoint_value (b->exp, &new_val, NULL, NULL); | |
2747 | if ((b->val != NULL) != (new_val != NULL) | |
2748 | || (b->val != NULL && !value_equal (b->val, new_val))) | |
c906108c | 2749 | { |
fa4727a6 DJ |
2750 | if (new_val != NULL) |
2751 | { | |
2752 | release_value (new_val); | |
2753 | value_free_to_mark (mark); | |
2754 | } | |
c906108c SS |
2755 | bs->old_val = b->val; |
2756 | b->val = new_val; | |
fa4727a6 | 2757 | b->val_valid = 1; |
c906108c SS |
2758 | /* We will stop here */ |
2759 | return WP_VALUE_CHANGED; | |
2760 | } | |
2761 | else | |
2762 | { | |
2763 | /* Nothing changed, don't do anything. */ | |
2764 | value_free_to_mark (mark); | |
2765 | /* We won't stop here */ | |
2766 | return WP_VALUE_NOT_CHANGED; | |
2767 | } | |
2768 | } | |
2769 | else | |
2770 | { | |
2771 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2772 | if we temporarily ignored the watchpoint, then when |
2773 | we reenter the block in which it is valid it contains | |
2774 | garbage (in the case of a function, it may have two | |
2775 | garbage values, one before and one after the prologue). | |
2776 | So we can't even detect the first assignment to it and | |
2777 | watch after that (since the garbage may or may not equal | |
2778 | the first value assigned). */ | |
4ce44c66 JM |
2779 | /* We print all the stop information in print_it_typical(), but |
2780 | in this case, by the time we call print_it_typical() this bp | |
2781 | will be deleted already. So we have no choice but print the | |
2782 | information here. */ | |
9dc5e2a9 | 2783 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2784 | ui_out_field_string |
2785 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 2786 | ui_out_text (uiout, "\nWatchpoint "); |
4f8d1dc6 | 2787 | ui_out_field_int (uiout, "wpnum", b->number); |
8b93c638 JM |
2788 | ui_out_text (uiout, " deleted because the program has left the block in\n\ |
2789 | which its expression is valid.\n"); | |
4ce44c66 | 2790 | |
c906108c | 2791 | if (b->related_breakpoint) |
b5de0fa7 EZ |
2792 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2793 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
2794 | |
2795 | return WP_DELETED; | |
2796 | } | |
2797 | } | |
2798 | ||
18a18393 VP |
2799 | /* Return true if it looks like target has stopped due to hitting |
2800 | breakpoint location BL. This function does not check if we | |
2801 | should stop, only if BL explains the stop. */ | |
2802 | static int | |
2803 | bpstat_check_location (const struct bp_location *bl, CORE_ADDR bp_addr) | |
2804 | { | |
2805 | struct breakpoint *b = bl->owner; | |
2806 | ||
2807 | if (b->type != bp_watchpoint | |
2808 | && b->type != bp_hardware_watchpoint | |
2809 | && b->type != bp_read_watchpoint | |
2810 | && b->type != bp_access_watchpoint | |
2811 | && b->type != bp_hardware_breakpoint | |
2812 | && b->type != bp_catch_fork | |
2813 | && b->type != bp_catch_vfork | |
2814 | && b->type != bp_catch_exec) /* a non-watchpoint bp */ | |
2815 | { | |
2816 | if (bl->address != bp_addr) /* address doesn't match */ | |
2817 | return 0; | |
2818 | if (overlay_debugging /* unmapped overlay section */ | |
2819 | && section_is_overlay (bl->section) | |
2820 | && !section_is_mapped (bl->section)) | |
2821 | return 0; | |
2822 | } | |
2823 | ||
2824 | /* Continuable hardware watchpoints are treated as non-existent if the | |
2825 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
2826 | some data address). Otherwise gdb won't stop on a break instruction | |
2827 | in the code (not from a breakpoint) when a hardware watchpoint has | |
2828 | been defined. Also skip watchpoints which we know did not trigger | |
2829 | (did not match the data address). */ | |
2830 | ||
2831 | if ((b->type == bp_hardware_watchpoint | |
2832 | || b->type == bp_read_watchpoint | |
2833 | || b->type == bp_access_watchpoint) | |
2834 | && b->watchpoint_triggered == watch_triggered_no) | |
2835 | return 0; | |
2836 | ||
2837 | if (b->type == bp_hardware_breakpoint) | |
2838 | { | |
2839 | if (bl->address != bp_addr) | |
2840 | return 0; | |
2841 | if (overlay_debugging /* unmapped overlay section */ | |
2842 | && section_is_overlay (bl->section) | |
2843 | && !section_is_mapped (bl->section)) | |
2844 | return 0; | |
2845 | } | |
2846 | ||
2847 | /* Is this a catchpoint of a load or unload? If so, did we | |
2848 | get a load or unload of the specified library? If not, | |
2849 | ignore it. */ | |
2850 | if ((b->type == bp_catch_load) | |
2851 | #if defined(SOLIB_HAVE_LOAD_EVENT) | |
2852 | && (!SOLIB_HAVE_LOAD_EVENT (PIDGET (inferior_ptid)) | |
2853 | || ((b->dll_pathname != NULL) | |
2854 | && (strcmp (b->dll_pathname, | |
2855 | SOLIB_LOADED_LIBRARY_PATHNAME ( | |
2856 | PIDGET (inferior_ptid))) | |
2857 | != 0))) | |
2858 | #endif | |
2859 | ) | |
2860 | return 0; | |
2861 | ||
2862 | if ((b->type == bp_catch_unload) | |
2863 | #if defined(SOLIB_HAVE_UNLOAD_EVENT) | |
2864 | && (!SOLIB_HAVE_UNLOAD_EVENT (PIDGET (inferior_ptid)) | |
2865 | || ((b->dll_pathname != NULL) | |
2866 | && (strcmp (b->dll_pathname, | |
2867 | SOLIB_UNLOADED_LIBRARY_PATHNAME ( | |
2868 | PIDGET (inferior_ptid))) | |
2869 | != 0))) | |
2870 | #endif | |
2871 | ) | |
2872 | return 0; | |
2873 | ||
2874 | if ((b->type == bp_catch_fork) | |
3a3e9ee3 | 2875 | && !inferior_has_forked (inferior_ptid, |
18a18393 VP |
2876 | &b->forked_inferior_pid)) |
2877 | return 0; | |
2878 | ||
2879 | if ((b->type == bp_catch_vfork) | |
3a3e9ee3 | 2880 | && !inferior_has_vforked (inferior_ptid, |
18a18393 VP |
2881 | &b->forked_inferior_pid)) |
2882 | return 0; | |
2883 | ||
2884 | if ((b->type == bp_catch_exec) | |
3a3e9ee3 | 2885 | && !inferior_has_execd (inferior_ptid, &b->exec_pathname)) |
18a18393 VP |
2886 | return 0; |
2887 | ||
2888 | return 1; | |
2889 | } | |
2890 | ||
2891 | /* If BS refers to a watchpoint, determine if the watched values | |
2892 | has actually changed, and we should stop. If not, set BS->stop | |
2893 | to 0. */ | |
2894 | static void | |
2895 | bpstat_check_watchpoint (bpstat bs) | |
2896 | { | |
2897 | const struct bp_location *bl = bs->breakpoint_at; | |
2898 | struct breakpoint *b = bl->owner; | |
2899 | ||
2900 | if (b->type == bp_watchpoint | |
2901 | || b->type == bp_read_watchpoint | |
2902 | || b->type == bp_access_watchpoint | |
2903 | || b->type == bp_hardware_watchpoint) | |
2904 | { | |
2905 | CORE_ADDR addr; | |
2906 | struct value *v; | |
2907 | int must_check_value = 0; | |
2908 | ||
2909 | if (b->type == bp_watchpoint) | |
2910 | /* For a software watchpoint, we must always check the | |
2911 | watched value. */ | |
2912 | must_check_value = 1; | |
2913 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
2914 | /* We have a hardware watchpoint (read, write, or access) | |
2915 | and the target earlier reported an address watched by | |
2916 | this watchpoint. */ | |
2917 | must_check_value = 1; | |
2918 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
2919 | && b->type == bp_hardware_watchpoint) | |
2920 | /* We were stopped by a hardware watchpoint, but the target could | |
2921 | not report the data address. We must check the watchpoint's | |
2922 | value. Access and read watchpoints are out of luck; without | |
2923 | a data address, we can't figure it out. */ | |
2924 | must_check_value = 1; | |
2925 | ||
2926 | if (must_check_value) | |
2927 | { | |
2928 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
2929 | b->number); | |
2930 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2931 | int e = catch_errors (watchpoint_check, bs, message, | |
2932 | RETURN_MASK_ALL); | |
2933 | do_cleanups (cleanups); | |
2934 | switch (e) | |
2935 | { | |
2936 | case WP_DELETED: | |
2937 | /* We've already printed what needs to be printed. */ | |
2938 | bs->print_it = print_it_done; | |
2939 | /* Stop. */ | |
2940 | break; | |
2941 | case WP_VALUE_CHANGED: | |
2942 | if (b->type == bp_read_watchpoint) | |
2943 | { | |
2944 | /* Don't stop: read watchpoints shouldn't fire if | |
2945 | the value has changed. This is for targets | |
2946 | which cannot set read-only watchpoints. */ | |
2947 | bs->print_it = print_it_noop; | |
2948 | bs->stop = 0; | |
2949 | } | |
2950 | break; | |
2951 | case WP_VALUE_NOT_CHANGED: | |
2952 | if (b->type == bp_hardware_watchpoint | |
2953 | || b->type == bp_watchpoint) | |
2954 | { | |
2955 | /* Don't stop: write watchpoints shouldn't fire if | |
2956 | the value hasn't changed. */ | |
2957 | bs->print_it = print_it_noop; | |
2958 | bs->stop = 0; | |
2959 | } | |
2960 | /* Stop. */ | |
2961 | break; | |
2962 | default: | |
2963 | /* Can't happen. */ | |
2964 | case 0: | |
2965 | /* Error from catch_errors. */ | |
2966 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); | |
2967 | if (b->related_breakpoint) | |
2968 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
2969 | b->disposition = disp_del_at_next_stop; | |
2970 | /* We've already printed what needs to be printed. */ | |
2971 | bs->print_it = print_it_done; | |
2972 | break; | |
2973 | } | |
2974 | } | |
2975 | else /* must_check_value == 0 */ | |
2976 | { | |
2977 | /* This is a case where some watchpoint(s) triggered, but | |
2978 | not at the address of this watchpoint, or else no | |
2979 | watchpoint triggered after all. So don't print | |
2980 | anything for this watchpoint. */ | |
2981 | bs->print_it = print_it_noop; | |
2982 | bs->stop = 0; | |
2983 | } | |
2984 | } | |
2985 | } | |
2986 | ||
2987 | ||
2988 | /* Check conditions (condition proper, frame, thread and ignore count) | |
2989 | of breakpoint referred to by BS. If we should not stop for this | |
2990 | breakpoint, set BS->stop to 0. */ | |
2991 | static void | |
2992 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
2993 | { | |
2994 | int thread_id = pid_to_thread_id (ptid); | |
2995 | const struct bp_location *bl = bs->breakpoint_at; | |
2996 | struct breakpoint *b = bl->owner; | |
2997 | ||
2998 | if (frame_id_p (b->frame_id) | |
2999 | && !frame_id_eq (b->frame_id, get_frame_id (get_current_frame ()))) | |
3000 | bs->stop = 0; | |
3001 | else if (bs->stop) | |
3002 | { | |
3003 | int value_is_zero = 0; | |
3004 | ||
3005 | /* If this is a scope breakpoint, mark the associated | |
3006 | watchpoint as triggered so that we will handle the | |
3007 | out-of-scope event. We'll get to the watchpoint next | |
3008 | iteration. */ | |
3009 | if (b->type == bp_watchpoint_scope) | |
3010 | b->related_breakpoint->watchpoint_triggered = watch_triggered_yes; | |
3011 | ||
3012 | if (bl->cond && bl->owner->disposition != disp_del_at_next_stop) | |
3013 | { | |
3014 | /* Need to select the frame, with all that implies | |
3015 | so that the conditions will have the right context. */ | |
3016 | select_frame (get_current_frame ()); | |
3017 | value_is_zero | |
3018 | = catch_errors (breakpoint_cond_eval, (bl->cond), | |
3019 | "Error in testing breakpoint condition:\n", | |
3020 | RETURN_MASK_ALL); | |
3021 | /* FIXME-someday, should give breakpoint # */ | |
3022 | free_all_values (); | |
3023 | } | |
3024 | if (bl->cond && value_is_zero) | |
3025 | { | |
3026 | bs->stop = 0; | |
3027 | } | |
3028 | else if (b->thread != -1 && b->thread != thread_id) | |
3029 | { | |
3030 | bs->stop = 0; | |
3031 | } | |
3032 | else if (b->ignore_count > 0) | |
3033 | { | |
3034 | b->ignore_count--; | |
3035 | annotate_ignore_count_change (); | |
3036 | bs->stop = 0; | |
3037 | /* Increase the hit count even though we don't | |
3038 | stop. */ | |
3039 | ++(b->hit_count); | |
3040 | } | |
3041 | } | |
3042 | } | |
3043 | ||
3044 | ||
9709f61c | 3045 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 3046 | BP_ADDR in thread PTID. |
c906108c | 3047 | |
d983da9c | 3048 | Determine whether we stopped at a breakpoint, etc, or whether we |
c906108c SS |
3049 | don't understand this stop. Result is a chain of bpstat's such that: |
3050 | ||
c5aa993b | 3051 | if we don't understand the stop, the result is a null pointer. |
c906108c | 3052 | |
c5aa993b | 3053 | if we understand why we stopped, the result is not null. |
c906108c | 3054 | |
c5aa993b JM |
3055 | Each element of the chain refers to a particular breakpoint or |
3056 | watchpoint at which we have stopped. (We may have stopped for | |
3057 | several reasons concurrently.) | |
c906108c | 3058 | |
c5aa993b JM |
3059 | Each element of the chain has valid next, breakpoint_at, |
3060 | commands, FIXME??? fields. */ | |
c906108c SS |
3061 | |
3062 | bpstat | |
d983da9c | 3063 | bpstat_stop_status (CORE_ADDR bp_addr, ptid_t ptid) |
c906108c | 3064 | { |
0d381245 | 3065 | struct breakpoint *b = NULL; |
89f9893c | 3066 | const struct bp_location *bl; |
20874c92 | 3067 | struct bp_location *loc; |
c906108c SS |
3068 | /* Root of the chain of bpstat's */ |
3069 | struct bpstats root_bs[1]; | |
3070 | /* Pointer to the last thing in the chain currently. */ | |
3071 | bpstat bs = root_bs; | |
20874c92 | 3072 | int ix; |
d832cb68 | 3073 | int need_remove_insert; |
c906108c | 3074 | |
0d381245 | 3075 | ALL_BP_LOCATIONS (bl) |
c5aa993b | 3076 | { |
0d381245 VP |
3077 | b = bl->owner; |
3078 | gdb_assert (b); | |
468d015d | 3079 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) |
c5aa993b JM |
3080 | continue; |
3081 | ||
a5606eee VP |
3082 | /* For hardware watchpoints, we look only at the first location. |
3083 | The watchpoint_check function will work on entire expression, | |
3084 | not the individual locations. For read watchopints, the | |
3085 | watchpoints_triggered function have checked all locations | |
3086 | alrea | |
3087 | */ | |
3088 | if (b->type == bp_hardware_watchpoint && bl != b->loc) | |
3089 | continue; | |
3090 | ||
18a18393 VP |
3091 | if (!bpstat_check_location (bl, bp_addr)) |
3092 | continue; | |
3093 | ||
c5aa993b JM |
3094 | /* Come here if it's a watchpoint, or if the break address matches */ |
3095 | ||
0d381245 | 3096 | bs = bpstat_alloc (bl, bs); /* Alloc a bpstat to explain stop */ |
c5aa993b | 3097 | |
18a18393 VP |
3098 | /* Assume we stop. Should we find watchpoint that is not actually |
3099 | triggered, or if condition of breakpoint is false, we'll reset | |
3100 | 'stop' to 0. */ | |
c5aa993b JM |
3101 | bs->stop = 1; |
3102 | bs->print = 1; | |
3103 | ||
18a18393 VP |
3104 | bpstat_check_watchpoint (bs); |
3105 | if (!bs->stop) | |
3106 | continue; | |
c5aa993b | 3107 | |
18a18393 VP |
3108 | if (b->type == bp_thread_event || b->type == bp_overlay_event) |
3109 | /* We do not stop for these. */ | |
c5aa993b JM |
3110 | bs->stop = 0; |
3111 | else | |
18a18393 VP |
3112 | bpstat_check_breakpoint_conditions (bs, ptid); |
3113 | ||
3114 | if (bs->stop) | |
c5aa993b | 3115 | { |
18a18393 | 3116 | ++(b->hit_count); |
d983da9c | 3117 | |
18a18393 VP |
3118 | /* We will stop here */ |
3119 | if (b->disposition == disp_disable) | |
c5aa993b | 3120 | { |
514f746b AR |
3121 | if (b->enable_state != bp_permanent) |
3122 | b->enable_state = bp_disabled; | |
b60e7edf | 3123 | update_global_location_list (0); |
c5aa993b | 3124 | } |
18a18393 VP |
3125 | if (b->silent) |
3126 | bs->print = 0; | |
3127 | bs->commands = b->commands; | |
3128 | if (bs->commands && | |
3129 | (strcmp ("silent", bs->commands->line) == 0 | |
3130 | || (xdb_commands && strcmp ("Q", bs->commands->line) == 0))) | |
c5aa993b | 3131 | { |
18a18393 VP |
3132 | bs->commands = bs->commands->next; |
3133 | bs->print = 0; | |
c5aa993b | 3134 | } |
18a18393 | 3135 | bs->commands = copy_command_lines (bs->commands); |
c5aa993b | 3136 | } |
18a18393 | 3137 | |
c5aa993b JM |
3138 | /* Print nothing for this entry if we dont stop or if we dont print. */ |
3139 | if (bs->stop == 0 || bs->print == 0) | |
3140 | bs->print_it = print_it_noop; | |
3141 | } | |
c906108c | 3142 | |
20874c92 VP |
3143 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) |
3144 | { | |
3145 | if (loc->address == bp_addr) | |
3146 | { | |
3147 | bs = bpstat_alloc (loc, bs); | |
3148 | /* For hits of moribund locations, we should just proceed. */ | |
3149 | bs->stop = 0; | |
3150 | bs->print = 0; | |
3151 | bs->print_it = print_it_noop; | |
3152 | } | |
3153 | } | |
3154 | ||
c906108c SS |
3155 | bs->next = NULL; /* Terminate the chain */ |
3156 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
3157 | ||
d983da9c DJ |
3158 | /* If we aren't stopping, the value of some hardware watchpoint may |
3159 | not have changed, but the intermediate memory locations we are | |
3160 | watching may have. Don't bother if we're stopping; this will get | |
3161 | done later. */ | |
3162 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3163 | if (bs->stop) | |
3164 | break; | |
3165 | ||
d832cb68 | 3166 | need_remove_insert = 0; |
d983da9c DJ |
3167 | if (bs == NULL) |
3168 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3169 | if (!bs->stop | |
20874c92 | 3170 | && bs->breakpoint_at->owner |
d983da9c DJ |
3171 | && (bs->breakpoint_at->owner->type == bp_hardware_watchpoint |
3172 | || bs->breakpoint_at->owner->type == bp_read_watchpoint | |
3173 | || bs->breakpoint_at->owner->type == bp_access_watchpoint)) | |
3174 | { | |
a5606eee VP |
3175 | /* remove/insert can invalidate bs->breakpoint_at, if this |
3176 | location is no longer used by the watchpoint. Prevent | |
3177 | further code from trying to use it. */ | |
3178 | bs->breakpoint_at = NULL; | |
d832cb68 | 3179 | need_remove_insert = 1; |
d983da9c DJ |
3180 | } |
3181 | ||
d832cb68 DD |
3182 | if (need_remove_insert) |
3183 | { | |
3184 | remove_breakpoints (); | |
3185 | insert_breakpoints (); | |
3186 | } | |
3187 | ||
d983da9c | 3188 | return root_bs->next; |
c906108c SS |
3189 | } |
3190 | \f | |
3191 | /* Tell what to do about this bpstat. */ | |
3192 | struct bpstat_what | |
fba45db2 | 3193 | bpstat_what (bpstat bs) |
c906108c SS |
3194 | { |
3195 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
3196 | enum class |
3197 | { | |
3198 | /* This bpstat element has no effect on the main_action. */ | |
3199 | no_effect = 0, | |
3200 | ||
3201 | /* There was a watchpoint, stop but don't print. */ | |
3202 | wp_silent, | |
c906108c | 3203 | |
c5aa993b JM |
3204 | /* There was a watchpoint, stop and print. */ |
3205 | wp_noisy, | |
c906108c | 3206 | |
c5aa993b JM |
3207 | /* There was a breakpoint but we're not stopping. */ |
3208 | bp_nostop, | |
c906108c | 3209 | |
c5aa993b JM |
3210 | /* There was a breakpoint, stop but don't print. */ |
3211 | bp_silent, | |
c906108c | 3212 | |
c5aa993b JM |
3213 | /* There was a breakpoint, stop and print. */ |
3214 | bp_noisy, | |
c906108c | 3215 | |
c5aa993b JM |
3216 | /* We hit the longjmp breakpoint. */ |
3217 | long_jump, | |
c906108c | 3218 | |
c5aa993b JM |
3219 | /* We hit the longjmp_resume breakpoint. */ |
3220 | long_resume, | |
c906108c | 3221 | |
c5aa993b JM |
3222 | /* We hit the step_resume breakpoint. */ |
3223 | step_resume, | |
c906108c | 3224 | |
c5aa993b JM |
3225 | /* We hit the shared library event breakpoint. */ |
3226 | shlib_event, | |
c906108c | 3227 | |
c5aa993b JM |
3228 | /* We caught a shared library event. */ |
3229 | catch_shlib_event, | |
c906108c | 3230 | |
c5aa993b JM |
3231 | /* This is just used to count how many enums there are. */ |
3232 | class_last | |
c906108c SS |
3233 | }; |
3234 | ||
3235 | /* Here is the table which drives this routine. So that we can | |
3236 | format it pretty, we define some abbreviations for the | |
3237 | enum bpstat_what codes. */ | |
3238 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
3239 | #define ss BPSTAT_WHAT_STOP_SILENT | |
3240 | #define sn BPSTAT_WHAT_STOP_NOISY | |
3241 | #define sgl BPSTAT_WHAT_SINGLE | |
3242 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
3243 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
c906108c | 3244 | #define sr BPSTAT_WHAT_STEP_RESUME |
c906108c SS |
3245 | #define shl BPSTAT_WHAT_CHECK_SHLIBS |
3246 | #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK | |
3247 | ||
3248 | /* "Can't happen." Might want to print an error message. | |
3249 | abort() is not out of the question, but chances are GDB is just | |
3250 | a bit confused, not unusable. */ | |
3251 | #define err BPSTAT_WHAT_STOP_NOISY | |
3252 | ||
3253 | /* Given an old action and a class, come up with a new action. */ | |
3254 | /* One interesting property of this table is that wp_silent is the same | |
3255 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
3256 | after stopping, the check for whether to step over a breakpoint | |
3257 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
3258 | reference to how we stopped. We retain separate wp_silent and |
3259 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
3260 | |
3261 | Another possibly interesting property of this table is that | |
3262 | there's a partial ordering, priority-like, of the actions. Once | |
3263 | you've decided that some action is appropriate, you'll never go | |
3264 | back and decide something of a lower priority is better. The | |
3265 | ordering is: | |
3266 | ||
4d5b2cd7 | 3267 | kc < clr sgl shl shlr slr sn sr ss |
78b6a731 | 3268 | sgl < shl shlr slr sn sr ss |
4d5b2cd7 | 3269 | slr < err shl shlr sn sr ss |
78b6a731 | 3270 | clr < err shl shlr sn sr ss |
4d5b2cd7 DJ |
3271 | ss < shl shlr sn sr |
3272 | sn < shl shlr sr | |
46d57086 DJ |
3273 | shl < shlr sr |
3274 | shlr < sr | |
4d5b2cd7 | 3275 | sr < |
c5aa993b | 3276 | |
43ff13b4 JM |
3277 | What I think this means is that we don't need a damned table |
3278 | here. If you just put the rows and columns in the right order, | |
3279 | it'd look awfully regular. We could simply walk the bpstat list | |
3280 | and choose the highest priority action we find, with a little | |
78b6a731 | 3281 | logic to handle the 'err' cases. */ |
c906108c SS |
3282 | |
3283 | /* step_resume entries: a step resume breakpoint overrides another | |
3284 | breakpoint of signal handling (see comment in wait_for_inferior | |
fcf70625 | 3285 | at where we set the step_resume breakpoint). */ |
c906108c SS |
3286 | |
3287 | static const enum bpstat_what_main_action | |
c5aa993b JM |
3288 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
3289 | { | |
3290 | /* old action */ | |
78b6a731 | 3291 | /* kc ss sn sgl slr clr sr shl shlr |
c5aa993b JM |
3292 | */ |
3293 | /*no_effect */ | |
78b6a731 | 3294 | {kc, ss, sn, sgl, slr, clr, sr, shl, shlr}, |
c5aa993b | 3295 | /*wp_silent */ |
78b6a731 | 3296 | {ss, ss, sn, ss, ss, ss, sr, shl, shlr}, |
c5aa993b | 3297 | /*wp_noisy */ |
78b6a731 | 3298 | {sn, sn, sn, sn, sn, sn, sr, shl, shlr}, |
c5aa993b | 3299 | /*bp_nostop */ |
78b6a731 | 3300 | {sgl, ss, sn, sgl, slr, slr, sr, shl, shlr}, |
c5aa993b | 3301 | /*bp_silent */ |
78b6a731 | 3302 | {ss, ss, sn, ss, ss, ss, sr, shl, shlr}, |
c5aa993b | 3303 | /*bp_noisy */ |
78b6a731 | 3304 | {sn, sn, sn, sn, sn, sn, sr, shl, shlr}, |
c5aa993b | 3305 | /*long_jump */ |
78b6a731 | 3306 | {slr, ss, sn, slr, slr, err, sr, shl, shlr}, |
c5aa993b | 3307 | /*long_resume */ |
78b6a731 | 3308 | {clr, ss, sn, err, err, err, sr, shl, shlr}, |
c5aa993b | 3309 | /*step_resume */ |
78b6a731 | 3310 | {sr, sr, sr, sr, sr, sr, sr, sr, sr}, |
c5aa993b | 3311 | /*shlib */ |
78b6a731 | 3312 | {shl, shl, shl, shl, shl, shl, sr, shl, shlr}, |
c5aa993b | 3313 | /*catch_shlib */ |
78b6a731 | 3314 | {shlr, shlr, shlr, shlr, shlr, shlr, sr, shlr, shlr} |
c5aa993b | 3315 | }; |
c906108c SS |
3316 | |
3317 | #undef kc | |
3318 | #undef ss | |
3319 | #undef sn | |
3320 | #undef sgl | |
3321 | #undef slr | |
3322 | #undef clr | |
c906108c SS |
3323 | #undef err |
3324 | #undef sr | |
3325 | #undef ts | |
3326 | #undef shl | |
3327 | #undef shlr | |
3328 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; | |
3329 | struct bpstat_what retval; | |
3330 | ||
3331 | retval.call_dummy = 0; | |
3332 | for (; bs != NULL; bs = bs->next) | |
3333 | { | |
3334 | enum class bs_class = no_effect; | |
3335 | if (bs->breakpoint_at == NULL) | |
3336 | /* I suspect this can happen if it was a momentary breakpoint | |
3337 | which has since been deleted. */ | |
3338 | continue; | |
20874c92 VP |
3339 | if (bs->breakpoint_at->owner == NULL) |
3340 | bs_class = bp_nostop; | |
3341 | else | |
4f8d1dc6 | 3342 | switch (bs->breakpoint_at->owner->type) |
c906108c SS |
3343 | { |
3344 | case bp_none: | |
3345 | continue; | |
3346 | ||
3347 | case bp_breakpoint: | |
3348 | case bp_hardware_breakpoint: | |
3349 | case bp_until: | |
3350 | case bp_finish: | |
3351 | if (bs->stop) | |
3352 | { | |
3353 | if (bs->print) | |
3354 | bs_class = bp_noisy; | |
3355 | else | |
3356 | bs_class = bp_silent; | |
3357 | } | |
3358 | else | |
3359 | bs_class = bp_nostop; | |
3360 | break; | |
3361 | case bp_watchpoint: | |
3362 | case bp_hardware_watchpoint: | |
3363 | case bp_read_watchpoint: | |
3364 | case bp_access_watchpoint: | |
3365 | if (bs->stop) | |
3366 | { | |
3367 | if (bs->print) | |
3368 | bs_class = wp_noisy; | |
3369 | else | |
3370 | bs_class = wp_silent; | |
3371 | } | |
3372 | else | |
53a5351d JM |
3373 | /* There was a watchpoint, but we're not stopping. |
3374 | This requires no further action. */ | |
c906108c SS |
3375 | bs_class = no_effect; |
3376 | break; | |
3377 | case bp_longjmp: | |
3378 | bs_class = long_jump; | |
3379 | break; | |
3380 | case bp_longjmp_resume: | |
3381 | bs_class = long_resume; | |
3382 | break; | |
3383 | case bp_step_resume: | |
3384 | if (bs->stop) | |
3385 | { | |
3386 | bs_class = step_resume; | |
3387 | } | |
3388 | else | |
3389 | /* It is for the wrong frame. */ | |
3390 | bs_class = bp_nostop; | |
3391 | break; | |
c906108c SS |
3392 | case bp_watchpoint_scope: |
3393 | bs_class = bp_nostop; | |
3394 | break; | |
c5aa993b JM |
3395 | case bp_shlib_event: |
3396 | bs_class = shlib_event; | |
3397 | break; | |
c4093a6a | 3398 | case bp_thread_event: |
1900040c | 3399 | case bp_overlay_event: |
c4093a6a JM |
3400 | bs_class = bp_nostop; |
3401 | break; | |
c5aa993b JM |
3402 | case bp_catch_load: |
3403 | case bp_catch_unload: | |
3404 | /* Only if this catchpoint triggered should we cause the | |
3405 | step-out-of-dld behaviour. Otherwise, we ignore this | |
3406 | catchpoint. */ | |
3407 | if (bs->stop) | |
3408 | bs_class = catch_shlib_event; | |
3409 | else | |
3410 | bs_class = no_effect; | |
3411 | break; | |
3412 | case bp_catch_fork: | |
3413 | case bp_catch_vfork: | |
3414 | case bp_catch_exec: | |
3415 | if (bs->stop) | |
3416 | { | |
3417 | if (bs->print) | |
3418 | bs_class = bp_noisy; | |
3419 | else | |
3420 | bs_class = bp_silent; | |
3421 | } | |
3422 | else | |
53a5351d JM |
3423 | /* There was a catchpoint, but we're not stopping. |
3424 | This requires no further action. */ | |
c5aa993b JM |
3425 | bs_class = no_effect; |
3426 | break; | |
c906108c | 3427 | case bp_call_dummy: |
53a5351d JM |
3428 | /* Make sure the action is stop (silent or noisy), |
3429 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
3430 | bs_class = bp_silent; |
3431 | retval.call_dummy = 1; | |
3432 | break; | |
3433 | } | |
c5aa993b | 3434 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
3435 | } |
3436 | retval.main_action = current_action; | |
3437 | return retval; | |
3438 | } | |
3439 | ||
3440 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
3441 | without hardware support). This isn't related to a specific bpstat, | |
3442 | just to things like whether watchpoints are set. */ | |
3443 | ||
c5aa993b | 3444 | int |
fba45db2 | 3445 | bpstat_should_step (void) |
c906108c SS |
3446 | { |
3447 | struct breakpoint *b; | |
3448 | ALL_BREAKPOINTS (b) | |
468d015d | 3449 | if (breakpoint_enabled (b) && b->type == bp_watchpoint) |
3172dc30 | 3450 | return 1; |
c906108c SS |
3451 | return 0; |
3452 | } | |
3453 | ||
c906108c | 3454 | \f |
c5aa993b | 3455 | |
c906108c SS |
3456 | /* Given a bpstat that records zero or more triggered eventpoints, this |
3457 | function returns another bpstat which contains only the catchpoints | |
3458 | on that first list, if any. */ | |
3459 | void | |
fba45db2 | 3460 | bpstat_get_triggered_catchpoints (bpstat ep_list, bpstat *cp_list) |
c5aa993b JM |
3461 | { |
3462 | struct bpstats root_bs[1]; | |
3463 | bpstat bs = root_bs; | |
3464 | struct breakpoint *ep; | |
3465 | char *dll_pathname; | |
3466 | ||
c906108c SS |
3467 | bpstat_clear (cp_list); |
3468 | root_bs->next = NULL; | |
c5aa993b JM |
3469 | |
3470 | for (; ep_list != NULL; ep_list = ep_list->next) | |
c906108c SS |
3471 | { |
3472 | /* Is this eventpoint a catchpoint? If not, ignore it. */ | |
4f8d1dc6 | 3473 | ep = ep_list->breakpoint_at->owner; |
c906108c | 3474 | if (ep == NULL) |
c5aa993b JM |
3475 | break; |
3476 | if ((ep->type != bp_catch_load) && | |
dfdfb3ca | 3477 | (ep->type != bp_catch_unload)) |
53a5351d | 3478 | /* pai: (temp) ADD fork/vfork here!! */ |
c5aa993b JM |
3479 | continue; |
3480 | ||
c906108c | 3481 | /* Yes; add it to the list. */ |
4f8d1dc6 | 3482 | bs = bpstat_alloc (ep_list->breakpoint_at, bs); |
c906108c SS |
3483 | *bs = *ep_list; |
3484 | bs->next = NULL; | |
3485 | bs = root_bs->next; | |
c5aa993b | 3486 | |
c906108c SS |
3487 | #if defined(SOLIB_ADD) |
3488 | /* Also, for each triggered catchpoint, tag it with the name of | |
3489 | the library that caused this trigger. (We copy the name now, | |
3490 | because it's only guaranteed to be available NOW, when the | |
3491 | catchpoint triggers. Clients who may wish to know the name | |
3492 | later must get it from the catchpoint itself.) */ | |
3493 | if (ep->triggered_dll_pathname != NULL) | |
b8c9b27d | 3494 | xfree (ep->triggered_dll_pathname); |
c906108c | 3495 | if (ep->type == bp_catch_load) |
39f77062 KB |
3496 | dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME ( |
3497 | PIDGET (inferior_ptid)); | |
c906108c | 3498 | else |
39f77062 KB |
3499 | dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
3500 | PIDGET (inferior_ptid)); | |
c906108c SS |
3501 | #else |
3502 | dll_pathname = NULL; | |
3503 | #endif | |
3504 | if (dll_pathname) | |
3505 | { | |
53a5351d JM |
3506 | ep->triggered_dll_pathname = (char *) |
3507 | xmalloc (strlen (dll_pathname) + 1); | |
c906108c SS |
3508 | strcpy (ep->triggered_dll_pathname, dll_pathname); |
3509 | } | |
3510 | else | |
3511 | ep->triggered_dll_pathname = NULL; | |
3512 | } | |
c5aa993b | 3513 | |
c906108c SS |
3514 | *cp_list = bs; |
3515 | } | |
3516 | ||
0d381245 VP |
3517 | static void print_breakpoint_location (struct breakpoint *b, |
3518 | struct bp_location *loc, | |
3519 | char *wrap_indent, | |
3520 | struct ui_stream *stb) | |
3521 | { | |
3522 | if (b->source_file) | |
3523 | { | |
3524 | struct symbol *sym | |
3525 | = find_pc_sect_function (loc->address, loc->section); | |
3526 | if (sym) | |
3527 | { | |
3528 | ui_out_text (uiout, "in "); | |
3529 | ui_out_field_string (uiout, "func", | |
3530 | SYMBOL_PRINT_NAME (sym)); | |
3531 | ui_out_wrap_hint (uiout, wrap_indent); | |
3532 | ui_out_text (uiout, " at "); | |
3533 | } | |
3534 | ui_out_field_string (uiout, "file", b->source_file); | |
3535 | ui_out_text (uiout, ":"); | |
3536 | ||
3537 | if (ui_out_is_mi_like_p (uiout)) | |
3538 | { | |
3539 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
3540 | char *fullname = symtab_to_fullname (sal.symtab); | |
3541 | ||
3542 | if (fullname) | |
3543 | ui_out_field_string (uiout, "fullname", fullname); | |
3544 | } | |
3545 | ||
3546 | ui_out_field_int (uiout, "line", b->line_number); | |
3547 | } | |
3548 | else if (!b->loc) | |
3549 | { | |
3550 | ui_out_field_string (uiout, "pending", b->addr_string); | |
3551 | } | |
3552 | else | |
3553 | { | |
3554 | print_address_symbolic (loc->address, stb->stream, demangle, ""); | |
3555 | ui_out_field_stream (uiout, "at", stb); | |
3556 | } | |
3557 | } | |
3558 | ||
c4093a6a | 3559 | /* Print B to gdb_stdout. */ |
c906108c | 3560 | static void |
0d381245 VP |
3561 | print_one_breakpoint_location (struct breakpoint *b, |
3562 | struct bp_location *loc, | |
3563 | int loc_number, | |
3564 | CORE_ADDR *last_addr) | |
c906108c | 3565 | { |
52f0bd74 AC |
3566 | struct command_line *l; |
3567 | struct symbol *sym; | |
c4093a6a JM |
3568 | struct ep_type_description |
3569 | { | |
3570 | enum bptype type; | |
3571 | char *description; | |
3572 | }; | |
3573 | static struct ep_type_description bptypes[] = | |
c906108c | 3574 | { |
c5aa993b JM |
3575 | {bp_none, "?deleted?"}, |
3576 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3577 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3578 | {bp_until, "until"}, |
3579 | {bp_finish, "finish"}, | |
3580 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3581 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3582 | {bp_read_watchpoint, "read watchpoint"}, |
3583 | {bp_access_watchpoint, "acc watchpoint"}, | |
3584 | {bp_longjmp, "longjmp"}, | |
3585 | {bp_longjmp_resume, "longjmp resume"}, | |
3586 | {bp_step_resume, "step resume"}, | |
c5aa993b JM |
3587 | {bp_watchpoint_scope, "watchpoint scope"}, |
3588 | {bp_call_dummy, "call dummy"}, | |
3589 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3590 | {bp_thread_event, "thread events"}, |
1900040c | 3591 | {bp_overlay_event, "overlay events"}, |
c5aa993b JM |
3592 | {bp_catch_load, "catch load"}, |
3593 | {bp_catch_unload, "catch unload"}, | |
3594 | {bp_catch_fork, "catch fork"}, | |
3595 | {bp_catch_vfork, "catch vfork"}, | |
dfdfb3ca | 3596 | {bp_catch_exec, "catch exec"} |
c5aa993b | 3597 | }; |
c4093a6a | 3598 | |
c2c6d25f | 3599 | static char bpenables[] = "nynny"; |
c906108c | 3600 | char wrap_indent[80]; |
8b93c638 JM |
3601 | struct ui_stream *stb = ui_out_stream_new (uiout); |
3602 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 3603 | struct cleanup *bkpt_chain; |
c906108c | 3604 | |
0d381245 VP |
3605 | int header_of_multiple = 0; |
3606 | int part_of_multiple = (loc != NULL); | |
3607 | ||
3608 | gdb_assert (!loc || loc_number != 0); | |
3609 | /* See comment in print_one_breakpoint concerning | |
3610 | treatment of breakpoints with single disabled | |
3611 | location. */ | |
3612 | if (loc == NULL | |
3613 | && (b->loc != NULL | |
3614 | && (b->loc->next != NULL || !b->loc->enabled))) | |
3615 | header_of_multiple = 1; | |
3616 | if (loc == NULL) | |
3617 | loc = b->loc; | |
3618 | ||
c4093a6a | 3619 | annotate_record (); |
3b31d625 | 3620 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
3621 | |
3622 | /* 1 */ | |
3623 | annotate_field (0); | |
0d381245 VP |
3624 | if (part_of_multiple) |
3625 | { | |
3626 | char *formatted; | |
0c6773c1 | 3627 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
3628 | ui_out_field_string (uiout, "number", formatted); |
3629 | xfree (formatted); | |
3630 | } | |
3631 | else | |
3632 | { | |
3633 | ui_out_field_int (uiout, "number", b->number); | |
3634 | } | |
c4093a6a JM |
3635 | |
3636 | /* 2 */ | |
3637 | annotate_field (1); | |
0d381245 VP |
3638 | if (part_of_multiple) |
3639 | ui_out_field_skip (uiout, "type"); | |
3640 | else | |
3641 | { | |
3642 | if (((int) b->type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3643 | || ((int) b->type != bptypes[(int) b->type].type)) | |
3644 | internal_error (__FILE__, __LINE__, | |
3645 | _("bptypes table does not describe type #%d."), | |
3646 | (int) b->type); | |
3647 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); | |
3648 | } | |
c4093a6a JM |
3649 | |
3650 | /* 3 */ | |
3651 | annotate_field (2); | |
0d381245 VP |
3652 | if (part_of_multiple) |
3653 | ui_out_field_skip (uiout, "disp"); | |
3654 | else | |
2cec12e5 | 3655 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 3656 | |
c4093a6a JM |
3657 | |
3658 | /* 4 */ | |
3659 | annotate_field (3); | |
0d381245 | 3660 | if (part_of_multiple) |
54e52265 | 3661 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 3662 | else |
54e52265 VP |
3663 | ui_out_field_fmt (uiout, "enabled", "%c", |
3664 | bpenables[(int) b->enable_state]); | |
3665 | ui_out_spaces (uiout, 2); | |
0d381245 | 3666 | |
c4093a6a JM |
3667 | |
3668 | /* 5 and 6 */ | |
3669 | strcpy (wrap_indent, " "); | |
3670 | if (addressprint) | |
75ac9d7b | 3671 | { |
17a912b6 | 3672 | if (gdbarch_addr_bit (current_gdbarch) <= 32) |
75ac9d7b MS |
3673 | strcat (wrap_indent, " "); |
3674 | else | |
3675 | strcat (wrap_indent, " "); | |
3676 | } | |
c906108c | 3677 | |
3086aeae | 3678 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 VP |
3679 | { |
3680 | /* Although the print_one can possibly print | |
3681 | all locations, calling it here is not likely | |
3682 | to get any nice result. So, make sure there's | |
3683 | just one location. */ | |
3684 | gdb_assert (b->loc == NULL || b->loc->next == NULL); | |
3685 | b->ops->print_one (b, last_addr); | |
3686 | } | |
3086aeae DJ |
3687 | else |
3688 | switch (b->type) | |
3689 | { | |
3690 | case bp_none: | |
3691 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 3692 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 3693 | break; |
c906108c | 3694 | |
3086aeae DJ |
3695 | case bp_watchpoint: |
3696 | case bp_hardware_watchpoint: | |
3697 | case bp_read_watchpoint: | |
3698 | case bp_access_watchpoint: | |
3699 | /* Field 4, the address, is omitted (which makes the columns | |
3700 | not line up too nicely with the headers, but the effect | |
3701 | is relatively readable). */ | |
3702 | if (addressprint) | |
3703 | ui_out_field_skip (uiout, "addr"); | |
3704 | annotate_field (5); | |
3705 | print_expression (b->exp, stb->stream); | |
3706 | ui_out_field_stream (uiout, "what", stb); | |
3707 | break; | |
3708 | ||
3709 | case bp_catch_load: | |
3710 | case bp_catch_unload: | |
3711 | /* Field 4, the address, is omitted (which makes the columns | |
3712 | not line up too nicely with the headers, but the effect | |
3713 | is relatively readable). */ | |
3714 | if (addressprint) | |
3715 | ui_out_field_skip (uiout, "addr"); | |
3716 | annotate_field (5); | |
3717 | if (b->dll_pathname == NULL) | |
3718 | { | |
3719 | ui_out_field_string (uiout, "what", "<any library>"); | |
3720 | ui_out_spaces (uiout, 1); | |
3721 | } | |
3722 | else | |
3723 | { | |
3724 | ui_out_text (uiout, "library \""); | |
3725 | ui_out_field_string (uiout, "what", b->dll_pathname); | |
3726 | ui_out_text (uiout, "\" "); | |
3727 | } | |
3728 | break; | |
3729 | ||
3730 | case bp_catch_fork: | |
3731 | case bp_catch_vfork: | |
3732 | /* Field 4, the address, is omitted (which makes the columns | |
3733 | not line up too nicely with the headers, but the effect | |
3734 | is relatively readable). */ | |
3735 | if (addressprint) | |
3736 | ui_out_field_skip (uiout, "addr"); | |
3737 | annotate_field (5); | |
3a3e9ee3 | 3738 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) |
3086aeae DJ |
3739 | { |
3740 | ui_out_text (uiout, "process "); | |
3a3e9ee3 PA |
3741 | ui_out_field_int (uiout, "what", |
3742 | ptid_get_pid (b->forked_inferior_pid)); | |
3086aeae DJ |
3743 | ui_out_spaces (uiout, 1); |
3744 | } | |
0f699bbe | 3745 | break; |
3086aeae DJ |
3746 | |
3747 | case bp_catch_exec: | |
3748 | /* Field 4, the address, is omitted (which makes the columns | |
3749 | not line up too nicely with the headers, but the effect | |
3750 | is relatively readable). */ | |
3751 | if (addressprint) | |
3752 | ui_out_field_skip (uiout, "addr"); | |
3753 | annotate_field (5); | |
3754 | if (b->exec_pathname != NULL) | |
3755 | { | |
3756 | ui_out_text (uiout, "program \""); | |
3757 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
3758 | ui_out_text (uiout, "\" "); | |
3759 | } | |
3760 | break; | |
3761 | ||
3086aeae DJ |
3762 | case bp_breakpoint: |
3763 | case bp_hardware_breakpoint: | |
3764 | case bp_until: | |
3765 | case bp_finish: | |
3766 | case bp_longjmp: | |
3767 | case bp_longjmp_resume: | |
3768 | case bp_step_resume: | |
3086aeae DJ |
3769 | case bp_watchpoint_scope: |
3770 | case bp_call_dummy: | |
3771 | case bp_shlib_event: | |
3772 | case bp_thread_event: | |
3773 | case bp_overlay_event: | |
3774 | if (addressprint) | |
3775 | { | |
3776 | annotate_field (4); | |
54e52265 | 3777 | if (header_of_multiple) |
0d381245 | 3778 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 3779 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 3780 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 3781 | else |
0d381245 | 3782 | ui_out_field_core_addr (uiout, "addr", loc->address); |
3086aeae DJ |
3783 | } |
3784 | annotate_field (5); | |
0d381245 VP |
3785 | if (!header_of_multiple) |
3786 | print_breakpoint_location (b, loc, wrap_indent, stb); | |
3787 | if (b->loc) | |
3788 | *last_addr = b->loc->address; | |
3086aeae DJ |
3789 | break; |
3790 | } | |
c906108c | 3791 | |
0d381245 | 3792 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 3793 | { |
8b93c638 JM |
3794 | /* FIXME: This seems to be redundant and lost here; see the |
3795 | "stop only in" line a little further down. */ | |
3796 | ui_out_text (uiout, " thread "); | |
3797 | ui_out_field_int (uiout, "thread", b->thread); | |
c4093a6a JM |
3798 | } |
3799 | ||
8b93c638 | 3800 | ui_out_text (uiout, "\n"); |
c4093a6a | 3801 | |
0d381245 | 3802 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
3803 | { |
3804 | annotate_field (6); | |
8b93c638 | 3805 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
3806 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
3807 | the frame ID. */ | |
d0a55772 | 3808 | ui_out_field_core_addr (uiout, "frame", b->frame_id.stack_addr); |
8b93c638 | 3809 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
3810 | } |
3811 | ||
0d381245 | 3812 | if (!part_of_multiple && b->cond_string && !ada_exception_catchpoint_p (b)) |
c4093a6a | 3813 | { |
f7f9143b JB |
3814 | /* We do not print the condition for Ada exception catchpoints |
3815 | because the condition is an internal implementation detail | |
3816 | that we do not want to expose to the user. */ | |
c4093a6a | 3817 | annotate_field (7); |
8b93c638 | 3818 | ui_out_text (uiout, "\tstop only if "); |
0101ce28 JJ |
3819 | ui_out_field_string (uiout, "cond", b->cond_string); |
3820 | ui_out_text (uiout, "\n"); | |
3821 | } | |
3822 | ||
0d381245 | 3823 | if (!part_of_multiple && b->thread != -1) |
c4093a6a JM |
3824 | { |
3825 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3826 | ui_out_text (uiout, "\tstop only in thread "); |
3827 | ui_out_field_int (uiout, "thread", b->thread); | |
3828 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3829 | } |
3830 | ||
63c715c6 | 3831 | if (!part_of_multiple && b->hit_count) |
c4093a6a JM |
3832 | { |
3833 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3834 | if (ep_is_catchpoint (b)) |
3835 | ui_out_text (uiout, "\tcatchpoint"); | |
3836 | else | |
3837 | ui_out_text (uiout, "\tbreakpoint"); | |
3838 | ui_out_text (uiout, " already hit "); | |
3839 | ui_out_field_int (uiout, "times", b->hit_count); | |
3840 | if (b->hit_count == 1) | |
3841 | ui_out_text (uiout, " time\n"); | |
3842 | else | |
3843 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
3844 | } |
3845 | ||
fb40c209 AC |
3846 | /* Output the count also if it is zero, but only if this is |
3847 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 3848 | if (ui_out_is_mi_like_p (uiout)) |
63c715c6 | 3849 | if (!part_of_multiple && b->hit_count == 0) |
fb40c209 | 3850 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 3851 | |
0d381245 | 3852 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
3853 | { |
3854 | annotate_field (8); | |
8b93c638 JM |
3855 | ui_out_text (uiout, "\tignore next "); |
3856 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3857 | ui_out_text (uiout, " hits\n"); | |
c4093a6a JM |
3858 | } |
3859 | ||
0d381245 | 3860 | if (!part_of_multiple && (l = b->commands)) |
c4093a6a | 3861 | { |
3b31d625 EZ |
3862 | struct cleanup *script_chain; |
3863 | ||
c4093a6a | 3864 | annotate_field (9); |
3b31d625 | 3865 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 3866 | print_command_lines (uiout, l, 4); |
3b31d625 | 3867 | do_cleanups (script_chain); |
c4093a6a | 3868 | } |
d24317b4 VP |
3869 | |
3870 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) | |
3871 | { | |
3872 | if (b->addr_string) | |
3873 | ui_out_field_string (uiout, "original-location", b->addr_string); | |
3874 | else if (b->exp_string) | |
3875 | ui_out_field_string (uiout, "original-location", b->exp_string); | |
3876 | } | |
3877 | ||
3b31d625 | 3878 | do_cleanups (bkpt_chain); |
8b93c638 | 3879 | do_cleanups (old_chain); |
c4093a6a | 3880 | } |
c5aa993b | 3881 | |
0d381245 VP |
3882 | static void |
3883 | print_one_breakpoint (struct breakpoint *b, | |
3884 | CORE_ADDR *last_addr) | |
3885 | { | |
3886 | print_one_breakpoint_location (b, NULL, 0, last_addr); | |
3887 | ||
3888 | /* If this breakpoint has custom print function, | |
3889 | it's already printed. Otherwise, print individual | |
3890 | locations, if any. */ | |
3891 | if (b->ops == NULL || b->ops->print_one == NULL) | |
3892 | { | |
3893 | /* If breakpoint has a single location that is | |
3894 | disabled, we print it as if it had | |
3895 | several locations, since otherwise it's hard to | |
3896 | represent "breakpoint enabled, location disabled" | |
a5606eee VP |
3897 | situation. |
3898 | Note that while hardware watchpoints have | |
3899 | several locations internally, that's no a property | |
3900 | exposed to user. */ | |
0d381245 | 3901 | if (b->loc |
a5606eee | 3902 | && !is_hardware_watchpoint (b) |
0d381245 | 3903 | && (b->loc->next || !b->loc->enabled) |
a5606eee | 3904 | && !ui_out_is_mi_like_p (uiout)) |
0d381245 VP |
3905 | { |
3906 | struct bp_location *loc; | |
3907 | int n = 1; | |
3908 | for (loc = b->loc; loc; loc = loc->next, ++n) | |
3909 | print_one_breakpoint_location (b, loc, n, last_addr); | |
3910 | } | |
3911 | } | |
3912 | } | |
3913 | ||
3914 | ||
c4093a6a JM |
3915 | struct captured_breakpoint_query_args |
3916 | { | |
3917 | int bnum; | |
3918 | }; | |
c5aa993b | 3919 | |
c4093a6a | 3920 | static int |
2b65245e | 3921 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
3922 | { |
3923 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 3924 | struct breakpoint *b; |
c4093a6a JM |
3925 | CORE_ADDR dummy_addr = 0; |
3926 | ALL_BREAKPOINTS (b) | |
3927 | { | |
3928 | if (args->bnum == b->number) | |
c5aa993b | 3929 | { |
c4093a6a JM |
3930 | print_one_breakpoint (b, &dummy_addr); |
3931 | return GDB_RC_OK; | |
c5aa993b | 3932 | } |
c4093a6a JM |
3933 | } |
3934 | return GDB_RC_NONE; | |
3935 | } | |
c5aa993b | 3936 | |
c4093a6a | 3937 | enum gdb_rc |
ce43223b | 3938 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, char **error_message) |
c4093a6a JM |
3939 | { |
3940 | struct captured_breakpoint_query_args args; | |
3941 | args.bnum = bnum; | |
3942 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3943 | an error. */ | |
b0b13bb4 DJ |
3944 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
3945 | error_message, RETURN_MASK_ALL) < 0) | |
3946 | return GDB_RC_FAIL; | |
3947 | else | |
3948 | return GDB_RC_OK; | |
c4093a6a | 3949 | } |
c5aa993b | 3950 | |
7f3b0473 AC |
3951 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
3952 | catchpoints, et.al.). */ | |
3953 | ||
3954 | static int | |
3955 | user_settable_breakpoint (const struct breakpoint *b) | |
3956 | { | |
3957 | return (b->type == bp_breakpoint | |
3958 | || b->type == bp_catch_load | |
3959 | || b->type == bp_catch_unload | |
3960 | || b->type == bp_catch_fork | |
3961 | || b->type == bp_catch_vfork | |
3962 | || b->type == bp_catch_exec | |
7f3b0473 AC |
3963 | || b->type == bp_hardware_breakpoint |
3964 | || b->type == bp_watchpoint | |
3965 | || b->type == bp_read_watchpoint | |
3966 | || b->type == bp_access_watchpoint | |
3967 | || b->type == bp_hardware_watchpoint); | |
3968 | } | |
3969 | ||
3970 | /* Print information on user settable breakpoint (watchpoint, etc) | |
3971 | number BNUM. If BNUM is -1 print all user settable breakpoints. | |
3972 | If ALLFLAG is non-zero, include non- user settable breakpoints. */ | |
c906108c | 3973 | |
c4093a6a | 3974 | static void |
fba45db2 | 3975 | breakpoint_1 (int bnum, int allflag) |
c4093a6a | 3976 | { |
52f0bd74 | 3977 | struct breakpoint *b; |
c4093a6a | 3978 | CORE_ADDR last_addr = (CORE_ADDR) -1; |
7f3b0473 | 3979 | int nr_printable_breakpoints; |
3b31d625 | 3980 | struct cleanup *bkpttbl_chain; |
c4093a6a | 3981 | |
7f3b0473 AC |
3982 | /* Compute the number of rows in the table. */ |
3983 | nr_printable_breakpoints = 0; | |
3984 | ALL_BREAKPOINTS (b) | |
3985 | if (bnum == -1 | |
3986 | || bnum == b->number) | |
3987 | { | |
3988 | if (allflag || user_settable_breakpoint (b)) | |
3989 | nr_printable_breakpoints++; | |
3990 | } | |
3991 | ||
8b93c638 | 3992 | if (addressprint) |
3b31d625 EZ |
3993 | bkpttbl_chain |
3994 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
3995 | "BreakpointTable"); | |
8b93c638 | 3996 | else |
3b31d625 EZ |
3997 | bkpttbl_chain |
3998 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
3999 | "BreakpointTable"); | |
8b93c638 | 4000 | |
7f3b0473 | 4001 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
4002 | annotate_breakpoints_headers (); |
4003 | if (nr_printable_breakpoints > 0) | |
4004 | annotate_field (0); | |
0d381245 | 4005 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
4006 | if (nr_printable_breakpoints > 0) |
4007 | annotate_field (1); | |
4008 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
4009 | if (nr_printable_breakpoints > 0) | |
4010 | annotate_field (2); | |
4011 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
4012 | if (nr_printable_breakpoints > 0) | |
4013 | annotate_field (3); | |
54e52265 | 4014 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
d7faa9e7 | 4015 | if (addressprint) |
7f3b0473 | 4016 | { |
d7faa9e7 AC |
4017 | if (nr_printable_breakpoints > 0) |
4018 | annotate_field (4); | |
17a912b6 | 4019 | if (gdbarch_addr_bit (current_gdbarch) <= 32) |
b25959ec | 4020 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 4021 | else |
b25959ec | 4022 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 4023 | } |
d7faa9e7 AC |
4024 | if (nr_printable_breakpoints > 0) |
4025 | annotate_field (5); | |
4026 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
4027 | ui_out_table_body (uiout); | |
4028 | if (nr_printable_breakpoints > 0) | |
4029 | annotate_breakpoints_table (); | |
7f3b0473 | 4030 | |
c4093a6a JM |
4031 | ALL_BREAKPOINTS (b) |
4032 | if (bnum == -1 | |
4033 | || bnum == b->number) | |
4034 | { | |
4035 | /* We only print out user settable breakpoints unless the | |
4036 | allflag is set. */ | |
7f3b0473 AC |
4037 | if (allflag || user_settable_breakpoint (b)) |
4038 | print_one_breakpoint (b, &last_addr); | |
c4093a6a JM |
4039 | } |
4040 | ||
3b31d625 | 4041 | do_cleanups (bkpttbl_chain); |
698384cd | 4042 | |
7f3b0473 | 4043 | if (nr_printable_breakpoints == 0) |
c906108c | 4044 | { |
8b93c638 JM |
4045 | if (bnum == -1) |
4046 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
4047 | else | |
4048 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
4049 | bnum); | |
c906108c SS |
4050 | } |
4051 | else | |
c4093a6a JM |
4052 | { |
4053 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
4054 | that a comparison of an unsigned with -1 is always false. */ | |
d1aa2f50 | 4055 | if (last_addr != (CORE_ADDR) -1 && !server_command) |
8b9b9e1a | 4056 | set_next_address (current_gdbarch, last_addr); |
c4093a6a | 4057 | } |
c906108c | 4058 | |
c4093a6a JM |
4059 | /* FIXME? Should this be moved up so that it is only called when |
4060 | there have been breakpoints? */ | |
c906108c SS |
4061 | annotate_breakpoints_table_end (); |
4062 | } | |
4063 | ||
c906108c | 4064 | static void |
fba45db2 | 4065 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
4066 | { |
4067 | int bnum = -1; | |
4068 | ||
4069 | if (bnum_exp) | |
bb518678 | 4070 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
4071 | |
4072 | breakpoint_1 (bnum, 0); | |
4073 | } | |
4074 | ||
7a292a7a | 4075 | static void |
fba45db2 | 4076 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
4077 | { |
4078 | int bnum = -1; | |
4079 | ||
4080 | if (bnum_exp) | |
bb518678 | 4081 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
4082 | |
4083 | breakpoint_1 (bnum, 1); | |
4084 | } | |
4085 | ||
0d381245 | 4086 | static int |
714835d5 UW |
4087 | breakpoint_has_pc (struct breakpoint *b, |
4088 | CORE_ADDR pc, struct obj_section *section) | |
0d381245 VP |
4089 | { |
4090 | struct bp_location *bl = b->loc; | |
4091 | for (; bl; bl = bl->next) | |
4092 | { | |
4093 | if (bl->address == pc | |
4094 | && (!overlay_debugging || bl->section == section)) | |
4095 | return 1; | |
4096 | } | |
4097 | return 0; | |
4098 | } | |
4099 | ||
c906108c SS |
4100 | /* Print a message describing any breakpoints set at PC. */ |
4101 | ||
4102 | static void | |
714835d5 UW |
4103 | describe_other_breakpoints (CORE_ADDR pc, struct obj_section *section, |
4104 | int thread) | |
c906108c | 4105 | { |
52f0bd74 AC |
4106 | int others = 0; |
4107 | struct breakpoint *b; | |
c906108c SS |
4108 | |
4109 | ALL_BREAKPOINTS (b) | |
0d381245 | 4110 | others += breakpoint_has_pc (b, pc, section); |
c906108c SS |
4111 | if (others > 0) |
4112 | { | |
a3f17187 AC |
4113 | if (others == 1) |
4114 | printf_filtered (_("Note: breakpoint ")); | |
4115 | else /* if (others == ???) */ | |
4116 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 4117 | ALL_BREAKPOINTS (b) |
0d381245 VP |
4118 | if (breakpoint_has_pc (b, pc, section)) |
4119 | { | |
4120 | others--; | |
4121 | printf_filtered ("%d", b->number); | |
4122 | if (b->thread == -1 && thread != -1) | |
4123 | printf_filtered (" (all threads)"); | |
4124 | else if (b->thread != -1) | |
4125 | printf_filtered (" (thread %d)", b->thread); | |
4126 | printf_filtered ("%s%s ", | |
4127 | ((b->enable_state == bp_disabled || | |
4128 | b->enable_state == bp_call_disabled) | |
4129 | ? " (disabled)" | |
4130 | : b->enable_state == bp_permanent | |
4131 | ? " (permanent)" | |
4132 | : ""), | |
4133 | (others > 1) ? "," | |
4134 | : ((others == 1) ? " and" : "")); | |
4135 | } | |
a3f17187 | 4136 | printf_filtered (_("also set at pc ")); |
ed49a04f | 4137 | fputs_filtered (paddress (pc), gdb_stdout); |
c906108c SS |
4138 | printf_filtered (".\n"); |
4139 | } | |
4140 | } | |
4141 | \f | |
4142 | /* Set the default place to put a breakpoint | |
4143 | for the `break' command with no arguments. */ | |
4144 | ||
4145 | void | |
fba45db2 KB |
4146 | set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, |
4147 | int line) | |
c906108c SS |
4148 | { |
4149 | default_breakpoint_valid = valid; | |
4150 | default_breakpoint_address = addr; | |
4151 | default_breakpoint_symtab = symtab; | |
4152 | default_breakpoint_line = line; | |
4153 | } | |
4154 | ||
e4f237da KB |
4155 | /* Return true iff it is meaningful to use the address member of |
4156 | BPT. For some breakpoint types, the address member is irrelevant | |
4157 | and it makes no sense to attempt to compare it to other addresses | |
4158 | (or use it for any other purpose either). | |
4159 | ||
4160 | More specifically, each of the following breakpoint types will always | |
4161 | have a zero valued address and we don't want check_duplicates() to mark | |
4162 | breakpoints of any of these types to be a duplicate of an actual | |
4163 | breakpoint at address zero: | |
4164 | ||
4165 | bp_watchpoint | |
4166 | bp_hardware_watchpoint | |
4167 | bp_read_watchpoint | |
4168 | bp_access_watchpoint | |
4169 | bp_catch_exec | |
e4f237da KB |
4170 | bp_catch_fork |
4171 | bp_catch_vork */ | |
4172 | ||
4173 | static int | |
4174 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
4175 | { | |
4176 | enum bptype type = bpt->type; | |
4177 | ||
4178 | return (type != bp_watchpoint | |
4179 | && type != bp_hardware_watchpoint | |
4180 | && type != bp_read_watchpoint | |
4181 | && type != bp_access_watchpoint | |
4182 | && type != bp_catch_exec | |
e4f237da KB |
4183 | && type != bp_catch_fork |
4184 | && type != bp_catch_vfork); | |
4185 | } | |
4186 | ||
9f60f21b | 4187 | /* Rescan breakpoints at the same address and section as BPT, |
c906108c | 4188 | marking the first one as "first" and any others as "duplicates". |
c2c6d25f | 4189 | This is so that the bpt instruction is only inserted once. |
9f60f21b JB |
4190 | If we have a permanent breakpoint at the same place as BPT, make |
4191 | that one the official one, and the rest as duplicates. */ | |
c906108c SS |
4192 | |
4193 | static void | |
714835d5 | 4194 | check_duplicates_for (CORE_ADDR address, struct obj_section *section) |
c906108c | 4195 | { |
075f6582 | 4196 | struct bp_location *b; |
52f0bd74 | 4197 | int count = 0; |
075f6582 | 4198 | struct bp_location *perm_bp = 0; |
c906108c | 4199 | |
075f6582 DJ |
4200 | ALL_BP_LOCATIONS (b) |
4201 | if (b->owner->enable_state != bp_disabled | |
075f6582 | 4202 | && b->owner->enable_state != bp_call_disabled |
0d381245 VP |
4203 | && b->enabled |
4204 | && !b->shlib_disabled | |
075f6582 DJ |
4205 | && b->address == address /* address / overlay match */ |
4206 | && (!overlay_debugging || b->section == section) | |
4207 | && breakpoint_address_is_meaningful (b->owner)) | |
c5aa993b | 4208 | { |
c2c6d25f | 4209 | /* Have we found a permanent breakpoint? */ |
075f6582 | 4210 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
4211 | { |
4212 | perm_bp = b; | |
4213 | break; | |
4214 | } | |
4215 | ||
c5aa993b | 4216 | count++; |
075f6582 | 4217 | b->duplicate = count > 1; |
c5aa993b | 4218 | } |
c2c6d25f JM |
4219 | |
4220 | /* If we found a permanent breakpoint at this address, go over the | |
4221 | list again and declare all the other breakpoints there to be the | |
4222 | duplicates. */ | |
4223 | if (perm_bp) | |
4224 | { | |
075f6582 | 4225 | perm_bp->duplicate = 0; |
c2c6d25f JM |
4226 | |
4227 | /* Permanent breakpoint should always be inserted. */ | |
075f6582 | 4228 | if (! perm_bp->inserted) |
8e65ff28 | 4229 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 AC |
4230 | _("allegedly permanent breakpoint is not " |
4231 | "actually inserted")); | |
c2c6d25f | 4232 | |
075f6582 | 4233 | ALL_BP_LOCATIONS (b) |
c2c6d25f JM |
4234 | if (b != perm_bp) |
4235 | { | |
075f6582 | 4236 | if (b->owner->enable_state != bp_disabled |
075f6582 | 4237 | && b->owner->enable_state != bp_call_disabled |
0d381245 | 4238 | && b->enabled && !b->shlib_disabled |
075f6582 DJ |
4239 | && b->address == address /* address / overlay match */ |
4240 | && (!overlay_debugging || b->section == section) | |
4241 | && breakpoint_address_is_meaningful (b->owner)) | |
4242 | { | |
4243 | if (b->inserted) | |
4244 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 AC |
4245 | _("another breakpoint was inserted on top of " |
4246 | "a permanent breakpoint")); | |
075f6582 DJ |
4247 | |
4248 | b->duplicate = 1; | |
4249 | } | |
c2c6d25f JM |
4250 | } |
4251 | } | |
c906108c SS |
4252 | } |
4253 | ||
0d381245 VP |
4254 | static void |
4255 | check_duplicates (struct breakpoint *bpt) | |
4256 | { | |
4257 | struct bp_location *bl = bpt->loc; | |
4258 | ||
4259 | if (! breakpoint_address_is_meaningful (bpt)) | |
4260 | return; | |
4261 | ||
4262 | for (; bl; bl = bl->next) | |
4263 | check_duplicates_for (bl->address, bl->section); | |
4264 | } | |
4265 | ||
76897487 KB |
4266 | static void |
4267 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
4268 | int bnum, int have_bnum) | |
4269 | { | |
4270 | char astr1[40]; | |
4271 | char astr2[40]; | |
4272 | ||
bb599908 PH |
4273 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
4274 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 4275 | if (have_bnum) |
8a3fe4f8 | 4276 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
4277 | bnum, astr1, astr2); |
4278 | else | |
8a3fe4f8 | 4279 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
4280 | } |
4281 | ||
4282 | /* Adjust a breakpoint's address to account for architectural constraints | |
4283 | on breakpoint placement. Return the adjusted address. Note: Very | |
4284 | few targets require this kind of adjustment. For most targets, | |
4285 | this function is simply the identity function. */ | |
4286 | ||
4287 | static CORE_ADDR | |
88f7da05 | 4288 | adjust_breakpoint_address (CORE_ADDR bpaddr, enum bptype bptype) |
76897487 KB |
4289 | { |
4290 | if (!gdbarch_adjust_breakpoint_address_p (current_gdbarch)) | |
4291 | { | |
4292 | /* Very few targets need any kind of breakpoint adjustment. */ | |
4293 | return bpaddr; | |
4294 | } | |
88f7da05 KB |
4295 | else if (bptype == bp_watchpoint |
4296 | || bptype == bp_hardware_watchpoint | |
4297 | || bptype == bp_read_watchpoint | |
4298 | || bptype == bp_access_watchpoint | |
4299 | || bptype == bp_catch_fork | |
4300 | || bptype == bp_catch_vfork | |
4301 | || bptype == bp_catch_exec) | |
4302 | { | |
4303 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
4304 | have their addresses modified. */ | |
4305 | return bpaddr; | |
4306 | } | |
76897487 KB |
4307 | else |
4308 | { | |
4309 | CORE_ADDR adjusted_bpaddr; | |
4310 | ||
4311 | /* Some targets have architectural constraints on the placement | |
4312 | of breakpoint instructions. Obtain the adjusted address. */ | |
4313 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (current_gdbarch, | |
4314 | bpaddr); | |
4315 | ||
4316 | /* An adjusted breakpoint address can significantly alter | |
4317 | a user's expectations. Print a warning if an adjustment | |
4318 | is required. */ | |
4319 | if (adjusted_bpaddr != bpaddr) | |
4320 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
4321 | ||
4322 | return adjusted_bpaddr; | |
4323 | } | |
4324 | } | |
4325 | ||
7cc221ef DJ |
4326 | /* Allocate a struct bp_location. */ |
4327 | ||
26bb91f3 | 4328 | static struct bp_location * |
e049a4b5 | 4329 | allocate_bp_location (struct breakpoint *bpt, enum bptype bp_type) |
7cc221ef DJ |
4330 | { |
4331 | struct bp_location *loc, *loc_p; | |
4332 | ||
4333 | loc = xmalloc (sizeof (struct bp_location)); | |
4334 | memset (loc, 0, sizeof (*loc)); | |
4335 | ||
e049a4b5 | 4336 | loc->owner = bpt; |
511a6cd4 | 4337 | loc->cond = NULL; |
0d381245 VP |
4338 | loc->shlib_disabled = 0; |
4339 | loc->enabled = 1; | |
e049a4b5 DJ |
4340 | |
4341 | switch (bp_type) | |
4342 | { | |
4343 | case bp_breakpoint: | |
4344 | case bp_until: | |
4345 | case bp_finish: | |
4346 | case bp_longjmp: | |
4347 | case bp_longjmp_resume: | |
4348 | case bp_step_resume: | |
e049a4b5 DJ |
4349 | case bp_watchpoint_scope: |
4350 | case bp_call_dummy: | |
4351 | case bp_shlib_event: | |
4352 | case bp_thread_event: | |
4353 | case bp_overlay_event: | |
4354 | case bp_catch_load: | |
4355 | case bp_catch_unload: | |
4356 | loc->loc_type = bp_loc_software_breakpoint; | |
4357 | break; | |
4358 | case bp_hardware_breakpoint: | |
4359 | loc->loc_type = bp_loc_hardware_breakpoint; | |
4360 | break; | |
4361 | case bp_hardware_watchpoint: | |
4362 | case bp_read_watchpoint: | |
4363 | case bp_access_watchpoint: | |
4364 | loc->loc_type = bp_loc_hardware_watchpoint; | |
4365 | break; | |
4366 | case bp_watchpoint: | |
4367 | case bp_catch_fork: | |
4368 | case bp_catch_vfork: | |
4369 | case bp_catch_exec: | |
e049a4b5 DJ |
4370 | loc->loc_type = bp_loc_other; |
4371 | break; | |
4372 | default: | |
e2e0b3e5 | 4373 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
4374 | } |
4375 | ||
7cc221ef DJ |
4376 | return loc; |
4377 | } | |
4378 | ||
fe3f5fa8 VP |
4379 | static void free_bp_location (struct bp_location *loc) |
4380 | { | |
4381 | if (loc->cond) | |
4382 | xfree (loc->cond); | |
74960c60 VP |
4383 | |
4384 | if (loc->function_name) | |
4385 | xfree (loc->function_name); | |
4386 | ||
fe3f5fa8 VP |
4387 | xfree (loc); |
4388 | } | |
4389 | ||
0d381245 VP |
4390 | /* Helper to set_raw_breakpoint below. Creates a breakpoint |
4391 | that has type BPTYPE and has no locations as yet. */ | |
c906108c | 4392 | |
c40e75cd | 4393 | static struct breakpoint * |
0d381245 | 4394 | set_raw_breakpoint_without_location (enum bptype bptype) |
c906108c | 4395 | { |
52f0bd74 | 4396 | struct breakpoint *b, *b1; |
c906108c SS |
4397 | |
4398 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4399 | memset (b, 0, sizeof (*b)); | |
2219d63c | 4400 | |
4d28f7a8 | 4401 | b->type = bptype; |
c906108c SS |
4402 | b->language = current_language->la_language; |
4403 | b->input_radix = input_radix; | |
4404 | b->thread = -1; | |
b5de0fa7 | 4405 | b->enable_state = bp_enabled; |
c906108c SS |
4406 | b->next = 0; |
4407 | b->silent = 0; | |
4408 | b->ignore_count = 0; | |
4409 | b->commands = NULL; | |
818dd999 | 4410 | b->frame_id = null_frame_id; |
c906108c SS |
4411 | b->dll_pathname = NULL; |
4412 | b->triggered_dll_pathname = NULL; | |
3a3e9ee3 | 4413 | b->forked_inferior_pid = null_ptid; |
c906108c | 4414 | b->exec_pathname = NULL; |
3086aeae | 4415 | b->ops = NULL; |
0d381245 | 4416 | b->condition_not_parsed = 0; |
c906108c SS |
4417 | |
4418 | /* Add this breakpoint to the end of the chain | |
4419 | so that a list of breakpoints will come out in order | |
4420 | of increasing numbers. */ | |
4421 | ||
4422 | b1 = breakpoint_chain; | |
4423 | if (b1 == 0) | |
4424 | breakpoint_chain = b; | |
4425 | else | |
4426 | { | |
4427 | while (b1->next) | |
4428 | b1 = b1->next; | |
4429 | b1->next = b; | |
4430 | } | |
0d381245 VP |
4431 | return b; |
4432 | } | |
4433 | ||
4434 | /* Initialize loc->function_name. */ | |
4435 | static void | |
4436 | set_breakpoint_location_function (struct bp_location *loc) | |
4437 | { | |
4438 | if (loc->owner->type == bp_breakpoint | |
4439 | || loc->owner->type == bp_hardware_breakpoint) | |
4440 | { | |
4441 | find_pc_partial_function (loc->address, &(loc->function_name), | |
4442 | NULL, NULL); | |
4443 | if (loc->function_name) | |
4444 | loc->function_name = xstrdup (loc->function_name); | |
4445 | } | |
4446 | } | |
4447 | ||
4448 | /* set_raw_breakpoint is a low level routine for allocating and | |
4449 | partially initializing a breakpoint of type BPTYPE. The newly | |
4450 | created breakpoint's address, section, source file name, and line | |
4451 | number are provided by SAL. The newly created and partially | |
4452 | initialized breakpoint is added to the breakpoint chain and | |
4453 | is also returned as the value of this function. | |
4454 | ||
4455 | It is expected that the caller will complete the initialization of | |
4456 | the newly created breakpoint struct as well as output any status | |
4457 | information regarding the creation of a new breakpoint. In | |
4458 | particular, set_raw_breakpoint does NOT set the breakpoint | |
4459 | number! Care should be taken to not allow an error to occur | |
4460 | prior to completing the initialization of the breakpoint. If this | |
4461 | should happen, a bogus breakpoint will be left on the chain. */ | |
4462 | ||
4463 | struct breakpoint * | |
4464 | set_raw_breakpoint (struct symtab_and_line sal, enum bptype bptype) | |
4465 | { | |
4466 | struct breakpoint *b = set_raw_breakpoint_without_location (bptype); | |
4467 | CORE_ADDR adjusted_address; | |
4468 | ||
4469 | /* Adjust the breakpoint's address prior to allocating a location. | |
4470 | Once we call allocate_bp_location(), that mostly uninitialized | |
4471 | location will be placed on the location chain. Adjustment of the | |
8defab1a | 4472 | breakpoint may cause target_read_memory() to be called and we do |
0d381245 VP |
4473 | not want its scan of the location chain to find a breakpoint and |
4474 | location that's only been partially initialized. */ | |
4475 | adjusted_address = adjust_breakpoint_address (sal.pc, bptype); | |
4476 | ||
4477 | b->loc = allocate_bp_location (b, bptype); | |
4478 | b->loc->requested_address = sal.pc; | |
4479 | b->loc->address = adjusted_address; | |
4480 | ||
4481 | if (sal.symtab == NULL) | |
4482 | b->source_file = NULL; | |
4483 | else | |
4484 | b->source_file = savestring (sal.symtab->filename, | |
4485 | strlen (sal.symtab->filename)); | |
4486 | b->loc->section = sal.section; | |
4487 | b->line_number = sal.line; | |
4488 | ||
4489 | set_breakpoint_location_function (b->loc); | |
c906108c | 4490 | |
c906108c SS |
4491 | breakpoints_changed (); |
4492 | ||
4493 | return b; | |
4494 | } | |
4495 | ||
c2c6d25f JM |
4496 | |
4497 | /* Note that the breakpoint object B describes a permanent breakpoint | |
4498 | instruction, hard-wired into the inferior's code. */ | |
4499 | void | |
4500 | make_breakpoint_permanent (struct breakpoint *b) | |
4501 | { | |
0d381245 | 4502 | struct bp_location *bl; |
b5de0fa7 | 4503 | b->enable_state = bp_permanent; |
c2c6d25f | 4504 | |
0d381245 VP |
4505 | /* By definition, permanent breakpoints are already present in the code. |
4506 | Mark all locations as inserted. For now, make_breakpoint_permanent | |
4507 | is called in just one place, so it's hard to say if it's reasonable | |
4508 | to have permanent breakpoint with multiple locations or not, | |
4509 | but it's easy to implmement. */ | |
4510 | for (bl = b->loc; bl; bl = bl->next) | |
4511 | bl->inserted = 1; | |
c2c6d25f JM |
4512 | } |
4513 | ||
1900040c MS |
4514 | static struct breakpoint * |
4515 | create_internal_breakpoint (CORE_ADDR address, enum bptype type) | |
4516 | { | |
4517 | static int internal_breakpoint_number = -1; | |
4518 | struct symtab_and_line sal; | |
4519 | struct breakpoint *b; | |
4520 | ||
fe39c653 | 4521 | init_sal (&sal); /* initialize to zeroes */ |
1900040c MS |
4522 | |
4523 | sal.pc = address; | |
4524 | sal.section = find_pc_overlay (sal.pc); | |
4525 | ||
4526 | b = set_raw_breakpoint (sal, type); | |
4527 | b->number = internal_breakpoint_number--; | |
4528 | b->disposition = disp_donttouch; | |
4529 | ||
4530 | return b; | |
4531 | } | |
4532 | ||
c906108c SS |
4533 | |
4534 | static void | |
fba45db2 | 4535 | create_longjmp_breakpoint (char *func_name) |
c906108c | 4536 | { |
1900040c | 4537 | struct minimal_symbol *m; |
c906108c | 4538 | |
611c83ae PA |
4539 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
4540 | return; | |
4541 | set_momentary_breakpoint_at_pc (SYMBOL_VALUE_ADDRESS (m), bp_longjmp); | |
b60e7edf | 4542 | update_global_location_list (1); |
c906108c SS |
4543 | } |
4544 | ||
53a5351d JM |
4545 | /* Call this routine when stepping and nexting to enable a breakpoint |
4546 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
4547 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
4548 | ||
4549 | void | |
611c83ae | 4550 | set_longjmp_breakpoint (void) |
c906108c | 4551 | { |
611c83ae | 4552 | if (gdbarch_get_longjmp_target_p (current_gdbarch)) |
c5aa993b | 4553 | { |
611c83ae PA |
4554 | create_longjmp_breakpoint ("longjmp"); |
4555 | create_longjmp_breakpoint ("_longjmp"); | |
4556 | create_longjmp_breakpoint ("siglongjmp"); | |
4557 | create_longjmp_breakpoint ("_siglongjmp"); | |
c5aa993b | 4558 | } |
c906108c SS |
4559 | } |
4560 | ||
611c83ae | 4561 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 4562 | void |
611c83ae | 4563 | delete_longjmp_breakpoint (int thread) |
c906108c | 4564 | { |
611c83ae | 4565 | struct breakpoint *b, *temp; |
c906108c | 4566 | |
611c83ae PA |
4567 | ALL_BREAKPOINTS_SAFE (b, temp) |
4568 | if (b->type == bp_longjmp) | |
4569 | { | |
4570 | if (b->thread == thread) | |
4571 | delete_breakpoint (b); | |
4572 | } | |
c906108c SS |
4573 | } |
4574 | ||
1900040c | 4575 | static void |
25db0f1b | 4576 | create_overlay_event_breakpoint_1 (char *func_name, struct objfile *objfile) |
1900040c MS |
4577 | { |
4578 | struct breakpoint *b; | |
4579 | struct minimal_symbol *m; | |
4580 | ||
25db0f1b | 4581 | if ((m = lookup_minimal_symbol_text (func_name, objfile)) == NULL) |
1900040c MS |
4582 | return; |
4583 | ||
4584 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), | |
4585 | bp_overlay_event); | |
4586 | b->addr_string = xstrdup (func_name); | |
4587 | ||
4588 | if (overlay_debugging == ovly_auto) | |
c02f5703 MS |
4589 | { |
4590 | b->enable_state = bp_enabled; | |
4591 | overlay_events_enabled = 1; | |
4592 | } | |
1900040c | 4593 | else |
c02f5703 MS |
4594 | { |
4595 | b->enable_state = bp_disabled; | |
4596 | overlay_events_enabled = 0; | |
4597 | } | |
b60e7edf | 4598 | update_global_location_list (1); |
1900040c MS |
4599 | } |
4600 | ||
25db0f1b UW |
4601 | static void |
4602 | create_overlay_event_breakpoint (char *func_name) | |
4603 | { | |
4604 | struct objfile *objfile; | |
4605 | ALL_OBJFILES (objfile) | |
4606 | create_overlay_event_breakpoint_1 (func_name, objfile); | |
4607 | } | |
4608 | ||
1900040c MS |
4609 | void |
4610 | enable_overlay_breakpoints (void) | |
4611 | { | |
52f0bd74 | 4612 | struct breakpoint *b; |
1900040c MS |
4613 | |
4614 | ALL_BREAKPOINTS (b) | |
4615 | if (b->type == bp_overlay_event) | |
4616 | { | |
4617 | b->enable_state = bp_enabled; | |
b60e7edf | 4618 | update_global_location_list (1); |
c02f5703 | 4619 | overlay_events_enabled = 1; |
1900040c MS |
4620 | } |
4621 | } | |
4622 | ||
4623 | void | |
4624 | disable_overlay_breakpoints (void) | |
4625 | { | |
52f0bd74 | 4626 | struct breakpoint *b; |
1900040c MS |
4627 | |
4628 | ALL_BREAKPOINTS (b) | |
4629 | if (b->type == bp_overlay_event) | |
4630 | { | |
4631 | b->enable_state = bp_disabled; | |
b60e7edf | 4632 | update_global_location_list (0); |
c02f5703 | 4633 | overlay_events_enabled = 0; |
1900040c MS |
4634 | } |
4635 | } | |
4636 | ||
c4093a6a | 4637 | struct breakpoint * |
fba45db2 | 4638 | create_thread_event_breakpoint (CORE_ADDR address) |
c4093a6a JM |
4639 | { |
4640 | struct breakpoint *b; | |
c4093a6a | 4641 | |
1900040c | 4642 | b = create_internal_breakpoint (address, bp_thread_event); |
c4093a6a | 4643 | |
b5de0fa7 | 4644 | b->enable_state = bp_enabled; |
c4093a6a | 4645 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
b435e160 | 4646 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); |
c4093a6a | 4647 | |
b60e7edf | 4648 | update_global_location_list_nothrow (1); |
74960c60 | 4649 | |
c4093a6a JM |
4650 | return b; |
4651 | } | |
4652 | ||
4653 | void | |
4654 | remove_thread_event_breakpoints (void) | |
4655 | { | |
4656 | struct breakpoint *b, *temp; | |
4657 | ||
4658 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4659 | if (b->type == bp_thread_event) | |
4660 | delete_breakpoint (b); | |
4661 | } | |
4662 | ||
0101ce28 JJ |
4663 | struct captured_parse_breakpoint_args |
4664 | { | |
4665 | char **arg_p; | |
4666 | struct symtabs_and_lines *sals_p; | |
4667 | char ***addr_string_p; | |
4668 | int *not_found_ptr; | |
4669 | }; | |
4670 | ||
4671 | struct lang_and_radix | |
4672 | { | |
4673 | enum language lang; | |
4674 | int radix; | |
4675 | }; | |
4676 | ||
0101ce28 | 4677 | |
cae688ec JJ |
4678 | void |
4679 | remove_solib_event_breakpoints (void) | |
4680 | { | |
4681 | struct breakpoint *b, *temp; | |
4682 | ||
4683 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4684 | if (b->type == bp_shlib_event) | |
4685 | delete_breakpoint (b); | |
4686 | } | |
4687 | ||
4688 | struct breakpoint * | |
4689 | create_solib_event_breakpoint (CORE_ADDR address) | |
4690 | { | |
4691 | struct breakpoint *b; | |
4692 | ||
4693 | b = create_internal_breakpoint (address, bp_shlib_event); | |
b60e7edf | 4694 | update_global_location_list_nothrow (1); |
cae688ec JJ |
4695 | return b; |
4696 | } | |
4697 | ||
4698 | /* Disable any breakpoints that are on code in shared libraries. Only | |
4699 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4700 | ||
4701 | void | |
cb851954 | 4702 | disable_breakpoints_in_shlibs (void) |
cae688ec | 4703 | { |
0d381245 | 4704 | struct bp_location *loc; |
cae688ec JJ |
4705 | int disabled_shlib_breaks = 0; |
4706 | ||
0d381245 | 4707 | ALL_BP_LOCATIONS (loc) |
cae688ec | 4708 | { |
0d381245 VP |
4709 | struct breakpoint *b = loc->owner; |
4710 | /* We apply the check to all breakpoints, including disabled | |
4711 | for those with loc->duplicate set. This is so that when breakpoint | |
4712 | becomes enabled, or the duplicate is removed, gdb will try to insert | |
4713 | all breakpoints. If we don't set shlib_disabled here, we'll try | |
4714 | to insert those breakpoints and fail. */ | |
a77053c2 | 4715 | if (((b->type == bp_breakpoint) || (b->type == bp_hardware_breakpoint)) |
0d381245 | 4716 | && !loc->shlib_disabled |
a77053c2 | 4717 | #ifdef PC_SOLIB |
0d381245 | 4718 | && PC_SOLIB (loc->address) |
a77053c2 | 4719 | #else |
0d381245 | 4720 | && solib_address (loc->address) |
a77053c2 MK |
4721 | #endif |
4722 | ) | |
0d381245 VP |
4723 | { |
4724 | loc->shlib_disabled = 1; | |
4725 | } | |
cae688ec JJ |
4726 | } |
4727 | } | |
4728 | ||
84acb35a JJ |
4729 | /* Disable any breakpoints that are in in an unloaded shared library. Only |
4730 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4731 | ||
75149521 | 4732 | static void |
84acb35a JJ |
4733 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
4734 | { | |
0d381245 | 4735 | struct bp_location *loc; |
84acb35a JJ |
4736 | int disabled_shlib_breaks = 0; |
4737 | ||
0d381245 | 4738 | ALL_BP_LOCATIONS (loc) |
84acb35a | 4739 | { |
0d381245 VP |
4740 | struct breakpoint *b = loc->owner; |
4741 | if ((loc->loc_type == bp_loc_hardware_breakpoint | |
4742 | || loc->loc_type == bp_loc_software_breakpoint) | |
4743 | && !loc->shlib_disabled) | |
84acb35a | 4744 | { |
a77053c2 | 4745 | #ifdef PC_SOLIB |
0d381245 | 4746 | char *so_name = PC_SOLIB (loc->address); |
a77053c2 | 4747 | #else |
0d381245 | 4748 | char *so_name = solib_address (loc->address); |
a77053c2 MK |
4749 | #endif |
4750 | if (so_name && !strcmp (so_name, solib->so_name)) | |
84acb35a | 4751 | { |
0d381245 | 4752 | loc->shlib_disabled = 1; |
84acb35a JJ |
4753 | /* At this point, we cannot rely on remove_breakpoint |
4754 | succeeding so we must mark the breakpoint as not inserted | |
4755 | to prevent future errors occurring in remove_breakpoints. */ | |
0d381245 | 4756 | loc->inserted = 0; |
84acb35a JJ |
4757 | if (!disabled_shlib_breaks) |
4758 | { | |
4759 | target_terminal_ours_for_output (); | |
8a3fe4f8 | 4760 | warning (_("Temporarily disabling breakpoints for unloaded shared library \"%s\""), |
84acb35a JJ |
4761 | so_name); |
4762 | } | |
4763 | disabled_shlib_breaks = 1; | |
4764 | } | |
4765 | } | |
4766 | } | |
84acb35a JJ |
4767 | } |
4768 | ||
c906108c | 4769 | static void |
fba45db2 KB |
4770 | create_fork_vfork_event_catchpoint (int tempflag, char *cond_string, |
4771 | enum bptype bp_kind) | |
c906108c | 4772 | { |
c5aa993b JM |
4773 | struct symtab_and_line sal; |
4774 | struct breakpoint *b; | |
4775 | int thread = -1; /* All threads. */ | |
4776 | ||
fe39c653 | 4777 | init_sal (&sal); |
c906108c SS |
4778 | sal.pc = 0; |
4779 | sal.symtab = NULL; | |
4780 | sal.line = 0; | |
c5aa993b | 4781 | |
4d28f7a8 | 4782 | b = set_raw_breakpoint (sal, bp_kind); |
c906108c SS |
4783 | set_breakpoint_count (breakpoint_count + 1); |
4784 | b->number = breakpoint_count; | |
53a5351d JM |
4785 | b->cond_string = (cond_string == NULL) ? |
4786 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4787 | b->thread = thread; |
4788 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4789 | b->enable_state = bp_enabled; |
4790 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
3a3e9ee3 | 4791 | b->forked_inferior_pid = null_ptid; |
b60e7edf | 4792 | update_global_location_list (1); |
74960c60 | 4793 | |
c5aa993b | 4794 | |
c906108c SS |
4795 | mention (b); |
4796 | } | |
4797 | ||
9b70b993 | 4798 | static void |
fba45db2 | 4799 | create_fork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4800 | { |
4801 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_fork); | |
4802 | } | |
c5aa993b | 4803 | |
9b70b993 | 4804 | static void |
fba45db2 | 4805 | create_vfork_event_catchpoint (int tempflag, char *cond_string) |
c906108c SS |
4806 | { |
4807 | create_fork_vfork_event_catchpoint (tempflag, cond_string, bp_catch_vfork); | |
4808 | } | |
4809 | ||
9b70b993 | 4810 | static void |
fba45db2 | 4811 | create_exec_event_catchpoint (int tempflag, char *cond_string) |
c906108c | 4812 | { |
c5aa993b JM |
4813 | struct symtab_and_line sal; |
4814 | struct breakpoint *b; | |
4815 | int thread = -1; /* All threads. */ | |
c906108c | 4816 | |
fe39c653 | 4817 | init_sal (&sal); |
c906108c SS |
4818 | sal.pc = 0; |
4819 | sal.symtab = NULL; | |
4820 | sal.line = 0; | |
4821 | ||
4d28f7a8 | 4822 | b = set_raw_breakpoint (sal, bp_catch_exec); |
c906108c SS |
4823 | set_breakpoint_count (breakpoint_count + 1); |
4824 | b->number = breakpoint_count; | |
53a5351d JM |
4825 | b->cond_string = (cond_string == NULL) ? |
4826 | NULL : savestring (cond_string, strlen (cond_string)); | |
c906108c SS |
4827 | b->thread = thread; |
4828 | b->addr_string = NULL; | |
b5de0fa7 EZ |
4829 | b->enable_state = bp_enabled; |
4830 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
b60e7edf | 4831 | update_global_location_list (1); |
c906108c | 4832 | |
c906108c SS |
4833 | mention (b); |
4834 | } | |
4835 | ||
4836 | static int | |
fba45db2 | 4837 | hw_breakpoint_used_count (void) |
c906108c | 4838 | { |
52f0bd74 | 4839 | struct breakpoint *b; |
c906108c SS |
4840 | int i = 0; |
4841 | ||
4842 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4843 | { |
d6b74ac4 | 4844 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
c5aa993b JM |
4845 | i++; |
4846 | } | |
c906108c SS |
4847 | |
4848 | return i; | |
4849 | } | |
4850 | ||
4851 | static int | |
fba45db2 | 4852 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 4853 | { |
52f0bd74 | 4854 | struct breakpoint *b; |
c906108c SS |
4855 | int i = 0; |
4856 | ||
4857 | *other_type_used = 0; | |
4858 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4859 | { |
468d015d | 4860 | if (breakpoint_enabled (b)) |
c5aa993b JM |
4861 | { |
4862 | if (b->type == type) | |
4863 | i++; | |
4864 | else if ((b->type == bp_hardware_watchpoint || | |
4865 | b->type == bp_read_watchpoint || | |
468d015d | 4866 | b->type == bp_access_watchpoint)) |
c5aa993b JM |
4867 | *other_type_used = 1; |
4868 | } | |
4869 | } | |
c906108c SS |
4870 | return i; |
4871 | } | |
4872 | ||
c906108c | 4873 | void |
fba45db2 | 4874 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 4875 | { |
c5aa993b | 4876 | struct breakpoint *b; |
c906108c SS |
4877 | |
4878 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4879 | { |
4880 | if (((b->type == bp_watchpoint) | |
4881 | || (b->type == bp_hardware_watchpoint) | |
4882 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 4883 | || (b->type == bp_access_watchpoint)) |
468d015d | 4884 | && breakpoint_enabled (b)) |
c5aa993b | 4885 | { |
b5de0fa7 | 4886 | b->enable_state = bp_call_disabled; |
b60e7edf | 4887 | update_global_location_list (0); |
c5aa993b JM |
4888 | } |
4889 | } | |
c906108c SS |
4890 | } |
4891 | ||
4892 | void | |
fba45db2 | 4893 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 4894 | { |
c5aa993b | 4895 | struct breakpoint *b; |
c906108c SS |
4896 | |
4897 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4898 | { |
4899 | if (((b->type == bp_watchpoint) | |
4900 | || (b->type == bp_hardware_watchpoint) | |
4901 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 4902 | || (b->type == bp_access_watchpoint)) |
b5de0fa7 | 4903 | && (b->enable_state == bp_call_disabled)) |
c5aa993b | 4904 | { |
b5de0fa7 | 4905 | b->enable_state = bp_enabled; |
b60e7edf | 4906 | update_global_location_list (1); |
c5aa993b JM |
4907 | } |
4908 | } | |
c906108c SS |
4909 | } |
4910 | ||
4911 | ||
4912 | /* Set a breakpoint that will evaporate an end of command | |
4913 | at address specified by SAL. | |
4914 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
4915 | ||
4916 | struct breakpoint * | |
818dd999 | 4917 | set_momentary_breakpoint (struct symtab_and_line sal, struct frame_id frame_id, |
fba45db2 | 4918 | enum bptype type) |
c906108c | 4919 | { |
52f0bd74 | 4920 | struct breakpoint *b; |
4d28f7a8 | 4921 | b = set_raw_breakpoint (sal, type); |
b5de0fa7 EZ |
4922 | b->enable_state = bp_enabled; |
4923 | b->disposition = disp_donttouch; | |
818dd999 | 4924 | b->frame_id = frame_id; |
c906108c SS |
4925 | |
4926 | /* If we're debugging a multi-threaded program, then we | |
4927 | want momentary breakpoints to be active in only a | |
4928 | single thread of control. */ | |
39f77062 KB |
4929 | if (in_thread_list (inferior_ptid)) |
4930 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 4931 | |
b60e7edf | 4932 | update_global_location_list_nothrow (1); |
74960c60 | 4933 | |
c906108c SS |
4934 | return b; |
4935 | } | |
611c83ae PA |
4936 | |
4937 | struct breakpoint * | |
4938 | set_momentary_breakpoint_at_pc (CORE_ADDR pc, enum bptype type) | |
4939 | { | |
4940 | struct symtab_and_line sal; | |
4941 | ||
4942 | sal = find_pc_line (pc, 0); | |
4943 | sal.pc = pc; | |
4944 | sal.section = find_pc_overlay (pc); | |
4945 | sal.explicit_pc = 1; | |
4946 | ||
4947 | return set_momentary_breakpoint (sal, null_frame_id, type); | |
4948 | } | |
c906108c | 4949 | \f |
c5aa993b | 4950 | |
c906108c SS |
4951 | /* Tell the user we have just set a breakpoint B. */ |
4952 | ||
4953 | static void | |
fba45db2 | 4954 | mention (struct breakpoint *b) |
c906108c SS |
4955 | { |
4956 | int say_where = 0; | |
3b31d625 | 4957 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 JM |
4958 | struct ui_stream *stb; |
4959 | ||
4960 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 4961 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c | 4962 | |
9a4105ab AC |
4963 | /* FIXME: This is misplaced; mention() is called by things (like |
4964 | hitting a watchpoint) other than breakpoint creation. It should | |
4965 | be possible to clean this up and at the same time replace the | |
7f4b89d1 | 4966 | random calls to breakpoint_changed with this hook. */ |
383f836e | 4967 | observer_notify_breakpoint_created (b->number); |
c906108c | 4968 | |
3086aeae DJ |
4969 | if (b->ops != NULL && b->ops->print_mention != NULL) |
4970 | b->ops->print_mention (b); | |
4971 | else | |
4972 | switch (b->type) | |
4973 | { | |
4974 | case bp_none: | |
a3f17187 | 4975 | printf_filtered (_("(apparently deleted?) Eventpoint %d: "), b->number); |
3086aeae DJ |
4976 | break; |
4977 | case bp_watchpoint: | |
4978 | ui_out_text (uiout, "Watchpoint "); | |
4979 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4980 | ui_out_field_int (uiout, "number", b->number); | |
4981 | ui_out_text (uiout, ": "); | |
4982 | print_expression (b->exp, stb->stream); | |
4983 | ui_out_field_stream (uiout, "exp", stb); | |
4984 | do_cleanups (ui_out_chain); | |
4985 | break; | |
4986 | case bp_hardware_watchpoint: | |
4987 | ui_out_text (uiout, "Hardware watchpoint "); | |
4988 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
4989 | ui_out_field_int (uiout, "number", b->number); | |
4990 | ui_out_text (uiout, ": "); | |
4991 | print_expression (b->exp, stb->stream); | |
4992 | ui_out_field_stream (uiout, "exp", stb); | |
4993 | do_cleanups (ui_out_chain); | |
4994 | break; | |
4995 | case bp_read_watchpoint: | |
4996 | ui_out_text (uiout, "Hardware read watchpoint "); | |
4997 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
4998 | ui_out_field_int (uiout, "number", b->number); | |
4999 | ui_out_text (uiout, ": "); | |
5000 | print_expression (b->exp, stb->stream); | |
5001 | ui_out_field_stream (uiout, "exp", stb); | |
5002 | do_cleanups (ui_out_chain); | |
5003 | break; | |
5004 | case bp_access_watchpoint: | |
5005 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
5006 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
5007 | ui_out_field_int (uiout, "number", b->number); | |
5008 | ui_out_text (uiout, ": "); | |
5009 | print_expression (b->exp, stb->stream); | |
5010 | ui_out_field_stream (uiout, "exp", stb); | |
5011 | do_cleanups (ui_out_chain); | |
5012 | break; | |
5013 | case bp_breakpoint: | |
5014 | if (ui_out_is_mi_like_p (uiout)) | |
5015 | { | |
5016 | say_where = 0; | |
5017 | break; | |
5018 | } | |
2cec12e5 AR |
5019 | if (b->disposition == disp_del) |
5020 | printf_filtered (_("Temporary breakpoint")); | |
5021 | else | |
5022 | printf_filtered (_("Breakpoint")); | |
5023 | printf_filtered (_(" %d"), b->number); | |
3086aeae DJ |
5024 | say_where = 1; |
5025 | break; | |
5026 | case bp_hardware_breakpoint: | |
5027 | if (ui_out_is_mi_like_p (uiout)) | |
5028 | { | |
5029 | say_where = 0; | |
5030 | break; | |
5031 | } | |
a3f17187 | 5032 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); |
3086aeae DJ |
5033 | say_where = 1; |
5034 | break; | |
5035 | case bp_catch_load: | |
5036 | case bp_catch_unload: | |
a3f17187 | 5037 | printf_filtered (_("Catchpoint %d (%s %s)"), |
3086aeae DJ |
5038 | b->number, |
5039 | (b->type == bp_catch_load) ? "load" : "unload", | |
5040 | (b->dll_pathname != NULL) ? | |
5041 | b->dll_pathname : "<any library>"); | |
5042 | break; | |
5043 | case bp_catch_fork: | |
5044 | case bp_catch_vfork: | |
a3f17187 | 5045 | printf_filtered (_("Catchpoint %d (%s)"), |
3086aeae DJ |
5046 | b->number, |
5047 | (b->type == bp_catch_fork) ? "fork" : "vfork"); | |
5048 | break; | |
5049 | case bp_catch_exec: | |
a3f17187 | 5050 | printf_filtered (_("Catchpoint %d (exec)"), |
3086aeae DJ |
5051 | b->number); |
5052 | break; | |
3086aeae DJ |
5053 | |
5054 | case bp_until: | |
5055 | case bp_finish: | |
5056 | case bp_longjmp: | |
5057 | case bp_longjmp_resume: | |
5058 | case bp_step_resume: | |
3086aeae DJ |
5059 | case bp_call_dummy: |
5060 | case bp_watchpoint_scope: | |
5061 | case bp_shlib_event: | |
5062 | case bp_thread_event: | |
5063 | case bp_overlay_event: | |
5064 | break; | |
5065 | } | |
c906108c | 5066 | |
c906108c SS |
5067 | if (say_where) |
5068 | { | |
a3f17187 AC |
5069 | /* i18n: cagney/2005-02-11: Below needs to be merged into a |
5070 | single string. */ | |
0d381245 | 5071 | if (b->loc == NULL) |
c906108c | 5072 | { |
a3f17187 | 5073 | printf_filtered (_(" (%s) pending."), b->addr_string); |
0101ce28 JJ |
5074 | } |
5075 | else | |
5076 | { | |
5077 | if (addressprint || b->source_file == NULL) | |
5078 | { | |
5079 | printf_filtered (" at "); | |
ed49a04f | 5080 | fputs_filtered (paddress (b->loc->address), gdb_stdout); |
0101ce28 JJ |
5081 | } |
5082 | if (b->source_file) | |
5083 | printf_filtered (": file %s, line %d.", | |
5084 | b->source_file, b->line_number); | |
0d381245 VP |
5085 | |
5086 | if (b->loc->next) | |
5087 | { | |
5088 | struct bp_location *loc = b->loc; | |
5089 | int n = 0; | |
5090 | for (; loc; loc = loc->next) | |
5091 | ++n; | |
5092 | printf_filtered (" (%d locations)", n); | |
5093 | } | |
5094 | ||
c906108c | 5095 | } |
c906108c | 5096 | } |
8b93c638 | 5097 | do_cleanups (old_chain); |
9dc5e2a9 | 5098 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 5099 | return; |
c906108c SS |
5100 | printf_filtered ("\n"); |
5101 | } | |
c906108c | 5102 | \f |
c5aa993b | 5103 | |
0d381245 VP |
5104 | static struct bp_location * |
5105 | add_location_to_breakpoint (struct breakpoint *b, enum bptype bptype, | |
5106 | const struct symtab_and_line *sal) | |
5107 | { | |
5108 | struct bp_location *loc, **tmp; | |
5109 | ||
5110 | loc = allocate_bp_location (b, bptype); | |
5111 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
5112 | ; | |
5113 | *tmp = loc; | |
5114 | loc->requested_address = sal->pc; | |
5115 | loc->address = adjust_breakpoint_address (loc->requested_address, | |
5116 | bptype); | |
5117 | loc->section = sal->section; | |
5118 | ||
5119 | set_breakpoint_location_function (loc); | |
5120 | return loc; | |
5121 | } | |
514f746b AR |
5122 | \f |
5123 | ||
5124 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
5125 | return 0 otherwise. */ | |
5126 | ||
5127 | static int | |
5128 | bp_loc_is_permanent (struct bp_location *loc) | |
5129 | { | |
5130 | int len; | |
5131 | CORE_ADDR addr; | |
5132 | const gdb_byte *brk; | |
5133 | gdb_byte *target_mem; | |
5134 | ||
5135 | gdb_assert (loc != NULL); | |
5136 | ||
5137 | addr = loc->address; | |
5138 | brk = gdbarch_breakpoint_from_pc (current_gdbarch, &addr, &len); | |
5139 | ||
5140 | target_mem = alloca (len); | |
5141 | ||
5142 | if (target_read_memory (loc->address, target_mem, len) == 0 | |
5143 | && memcmp (target_mem, brk, len) == 0) | |
5144 | return 1; | |
5145 | ||
5146 | return 0; | |
5147 | } | |
5148 | ||
5149 | ||
c3f6f71d | 5150 | |
018d34a4 VP |
5151 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
5152 | as textual description of the location, and COND_STRING | |
db107f19 | 5153 | as condition expression. */ |
018d34a4 VP |
5154 | |
5155 | static void | |
0d381245 | 5156 | create_breakpoint (struct symtabs_and_lines sals, char *addr_string, |
018d34a4 VP |
5157 | char *cond_string, |
5158 | enum bptype type, enum bpdisp disposition, | |
604133b5 AR |
5159 | int thread, int ignore_count, |
5160 | struct breakpoint_ops *ops, int from_tty) | |
018d34a4 | 5161 | { |
0d381245 VP |
5162 | struct breakpoint *b = NULL; |
5163 | int i; | |
018d34a4 VP |
5164 | |
5165 | if (type == bp_hardware_breakpoint) | |
5166 | { | |
5167 | int i = hw_breakpoint_used_count (); | |
5168 | int target_resources_ok = | |
5169 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
5170 | i + 1, 0); | |
5171 | if (target_resources_ok == 0) | |
5172 | error (_("No hardware breakpoint support in the target.")); | |
5173 | else if (target_resources_ok < 0) | |
5174 | error (_("Hardware breakpoints used exceeds limit.")); | |
5175 | } | |
5176 | ||
0d381245 VP |
5177 | for (i = 0; i < sals.nelts; ++i) |
5178 | { | |
5179 | struct symtab_and_line sal = sals.sals[i]; | |
5180 | struct bp_location *loc; | |
5181 | ||
5182 | if (from_tty) | |
5183 | describe_other_breakpoints (sal.pc, sal.section, thread); | |
5184 | ||
5185 | if (i == 0) | |
5186 | { | |
5187 | b = set_raw_breakpoint (sal, type); | |
5188 | set_breakpoint_count (breakpoint_count + 1); | |
5189 | b->number = breakpoint_count; | |
5190 | b->thread = thread; | |
018d34a4 | 5191 | |
0d381245 VP |
5192 | b->cond_string = cond_string; |
5193 | b->ignore_count = ignore_count; | |
5194 | b->enable_state = bp_enabled; | |
5195 | b->disposition = disposition; | |
018d34a4 | 5196 | |
0d381245 VP |
5197 | loc = b->loc; |
5198 | } | |
5199 | else | |
018d34a4 | 5200 | { |
0d381245 VP |
5201 | loc = add_location_to_breakpoint (b, type, &sal); |
5202 | } | |
5203 | ||
514f746b AR |
5204 | if (bp_loc_is_permanent (loc)) |
5205 | make_breakpoint_permanent (b); | |
5206 | ||
0d381245 VP |
5207 | if (b->cond_string) |
5208 | { | |
5209 | char *arg = b->cond_string; | |
d32a6982 | 5210 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); |
0d381245 | 5211 | if (*arg) |
db107f19 | 5212 | error (_("Garbage %s follows condition"), arg); |
018d34a4 | 5213 | } |
0d381245 | 5214 | } |
018d34a4 VP |
5215 | |
5216 | if (addr_string) | |
5217 | b->addr_string = addr_string; | |
5218 | else | |
5219 | /* addr_string has to be used or breakpoint_re_set will delete | |
5220 | me. */ | |
5221 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); | |
5222 | ||
604133b5 | 5223 | b->ops = ops; |
018d34a4 VP |
5224 | mention (b); |
5225 | } | |
5226 | ||
ed0616c6 VP |
5227 | /* Remove element at INDEX_TO_REMOVE from SAL, shifting other |
5228 | elements to fill the void space. */ | |
5229 | static void remove_sal (struct symtabs_and_lines *sal, int index_to_remove) | |
5230 | { | |
5231 | int i = index_to_remove+1; | |
5232 | int last_index = sal->nelts-1; | |
5233 | ||
5234 | for (;i <= last_index; ++i) | |
5235 | sal->sals[i-1] = sal->sals[i]; | |
5236 | ||
5237 | --(sal->nelts); | |
5238 | } | |
5239 | ||
5240 | /* If appropriate, obtains all sals that correspond | |
5241 | to the same file and line as SAL. This is done | |
5242 | only if SAL does not have explicit PC and has | |
5243 | line and file information. If we got just a single | |
5244 | expanded sal, return the original. | |
5245 | ||
5246 | Otherwise, if SAL.explicit_line is not set, filter out | |
5247 | all sals for which the name of enclosing function | |
5248 | is different from SAL. This makes sure that if we have | |
5249 | breakpoint originally set in template instantiation, say | |
5250 | foo<int>(), we won't expand SAL to locations at the same | |
5251 | line in all existing instantiations of 'foo'. | |
5252 | ||
5253 | */ | |
5254 | struct symtabs_and_lines | |
5255 | expand_line_sal_maybe (struct symtab_and_line sal) | |
5256 | { | |
5257 | struct symtabs_and_lines expanded; | |
5258 | CORE_ADDR original_pc = sal.pc; | |
5259 | char *original_function = NULL; | |
5260 | int found; | |
5261 | int i; | |
5262 | ||
5263 | /* If we have explicit pc, don't expand. | |
5264 | If we have no line number, we can't expand. */ | |
5265 | if (sal.explicit_pc || sal.line == 0 || sal.symtab == NULL) | |
5266 | { | |
5267 | expanded.nelts = 1; | |
5268 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5269 | expanded.sals[0] = sal; | |
5270 | return expanded; | |
5271 | } | |
5272 | ||
5273 | sal.pc = 0; | |
5274 | find_pc_partial_function (original_pc, &original_function, NULL, NULL); | |
5275 | ||
5276 | expanded = expand_line_sal (sal); | |
5277 | if (expanded.nelts == 1) | |
5278 | { | |
5279 | /* We had one sal, we got one sal. Without futher | |
5280 | processing, just return the original sal. */ | |
5281 | xfree (expanded.sals); | |
5282 | expanded.nelts = 1; | |
5283 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5284 | sal.pc = original_pc; | |
5285 | expanded.sals[0] = sal; | |
5286 | return expanded; | |
5287 | } | |
5288 | ||
5289 | if (!sal.explicit_line) | |
5290 | { | |
5291 | CORE_ADDR func_addr, func_end; | |
5292 | for (i = 0; i < expanded.nelts; ++i) | |
5293 | { | |
5294 | CORE_ADDR pc = expanded.sals[i].pc; | |
5295 | char *this_function; | |
5296 | if (find_pc_partial_function (pc, &this_function, | |
5297 | &func_addr, &func_end)) | |
5298 | { | |
5299 | if (this_function && | |
5300 | strcmp (this_function, original_function) != 0) | |
5301 | { | |
5302 | remove_sal (&expanded, i); | |
5303 | --i; | |
5304 | } | |
5305 | else if (func_addr == pc) | |
5306 | { | |
5307 | /* We're at beginning of a function, and should | |
5308 | skip prologue. */ | |
5309 | struct symbol *sym = find_pc_function (pc); | |
5310 | if (sym) | |
5311 | expanded.sals[i] = find_function_start_sal (sym, 1); | |
5312 | else | |
5313 | expanded.sals[i].pc | |
5314 | = gdbarch_skip_prologue (current_gdbarch, pc); | |
5315 | } | |
5316 | } | |
5317 | } | |
5318 | } | |
5319 | ||
5320 | ||
5321 | if (expanded.nelts <= 1) | |
5322 | { | |
5323 | /* This is un ugly workaround. If we get zero | |
5324 | expanded sals then something is really wrong. | |
5325 | Fix that by returnign the original sal. */ | |
5326 | xfree (expanded.sals); | |
5327 | expanded.nelts = 1; | |
5328 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5329 | sal.pc = original_pc; | |
5330 | expanded.sals[0] = sal; | |
5331 | return expanded; | |
5332 | } | |
5333 | ||
5334 | if (original_pc) | |
5335 | { | |
5336 | found = 0; | |
5337 | for (i = 0; i < expanded.nelts; ++i) | |
5338 | if (expanded.sals[i].pc == original_pc) | |
5339 | { | |
5340 | found = 1; | |
5341 | break; | |
5342 | } | |
5343 | gdb_assert (found); | |
5344 | } | |
5345 | ||
5346 | return expanded; | |
5347 | } | |
5348 | ||
018d34a4 VP |
5349 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
5350 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
5351 | value. COND_STRING, if not NULL, specified the condition to be | |
5352 | used for all breakpoints. Essentially the only case where | |
5353 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
5354 | function. In that case, it's still not possible to specify | |
5355 | separate conditions for different overloaded functions, so | |
5356 | we take just a single condition string. | |
5357 | ||
c3f6f71d | 5358 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 5359 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
5360 | array contents). If the function fails (error() is called), the |
5361 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
5362 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
5363 | |
5364 | static void | |
c3f6f71d | 5365 | create_breakpoints (struct symtabs_and_lines sals, char **addr_string, |
018d34a4 | 5366 | char *cond_string, |
c3f6f71d | 5367 | enum bptype type, enum bpdisp disposition, |
604133b5 AR |
5368 | int thread, int ignore_count, |
5369 | struct breakpoint_ops *ops, int from_tty) | |
c906108c | 5370 | { |
018d34a4 VP |
5371 | int i; |
5372 | for (i = 0; i < sals.nelts; ++i) | |
c3f6f71d | 5373 | { |
ed0616c6 VP |
5374 | struct symtabs_and_lines expanded = |
5375 | expand_line_sal_maybe (sals.sals[i]); | |
0d381245 | 5376 | |
ed0616c6 | 5377 | create_breakpoint (expanded, addr_string[i], |
018d34a4 | 5378 | cond_string, type, disposition, |
604133b5 | 5379 | thread, ignore_count, ops, from_tty); |
c3f6f71d | 5380 | } |
74960c60 | 5381 | |
b60e7edf | 5382 | update_global_location_list (1); |
c3f6f71d | 5383 | } |
c906108c | 5384 | |
c3f6f71d JM |
5385 | /* Parse ARG which is assumed to be a SAL specification possibly |
5386 | followed by conditionals. On return, SALS contains an array of SAL | |
5387 | addresses found. ADDR_STRING contains a vector of (canonical) | |
5388 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 5389 | |
b9362cc7 | 5390 | static void |
c3f6f71d JM |
5391 | parse_breakpoint_sals (char **address, |
5392 | struct symtabs_and_lines *sals, | |
0101ce28 JJ |
5393 | char ***addr_string, |
5394 | int *not_found_ptr) | |
c3f6f71d JM |
5395 | { |
5396 | char *addr_start = *address; | |
5397 | *addr_string = NULL; | |
5398 | /* If no arg given, or if first arg is 'if ', use the default | |
5399 | breakpoint. */ | |
5400 | if ((*address) == NULL | |
5401 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
5402 | { |
5403 | if (default_breakpoint_valid) | |
5404 | { | |
c3f6f71d | 5405 | struct symtab_and_line sal; |
fe39c653 | 5406 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 5407 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
5408 | xmalloc (sizeof (struct symtab_and_line)); |
5409 | sal.pc = default_breakpoint_address; | |
5410 | sal.line = default_breakpoint_line; | |
5411 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 5412 | sal.section = find_pc_overlay (sal.pc); |
c3f6f71d JM |
5413 | sals->sals[0] = sal; |
5414 | sals->nelts = 1; | |
c906108c SS |
5415 | } |
5416 | else | |
8a3fe4f8 | 5417 | error (_("No default breakpoint address now.")); |
c906108c SS |
5418 | } |
5419 | else | |
5420 | { | |
c906108c | 5421 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
5422 | current_source_symtab (which is decode_line_1's default). This |
5423 | should produce the results we want almost all of the time while | |
1aeae86e AF |
5424 | leaving default_breakpoint_* alone. |
5425 | ObjC: However, don't match an Objective-C method name which | |
5426 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 5427 | |
c214a6fd | 5428 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 5429 | |
c906108c | 5430 | if (default_breakpoint_valid |
0378c332 | 5431 | && (!cursal.symtab |
1aeae86e AF |
5432 | || ((strchr ("+-", (*address)[0]) != NULL) |
5433 | && ((*address)[1] != '[')))) | |
c3f6f71d | 5434 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
0101ce28 JJ |
5435 | default_breakpoint_line, addr_string, |
5436 | not_found_ptr); | |
c906108c | 5437 | else |
0101ce28 JJ |
5438 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
5439 | addr_string, not_found_ptr); | |
c906108c | 5440 | } |
c3f6f71d JM |
5441 | /* For any SAL that didn't have a canonical string, fill one in. */ |
5442 | if (sals->nelts > 0 && *addr_string == NULL) | |
5443 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
5444 | if (addr_start != (*address)) | |
c906108c | 5445 | { |
c3f6f71d JM |
5446 | int i; |
5447 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 5448 | { |
c3f6f71d JM |
5449 | /* Add the string if not present. */ |
5450 | if ((*addr_string)[i] == NULL) | |
5451 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
5452 | } |
5453 | } | |
c3f6f71d | 5454 | } |
c906108c | 5455 | |
c906108c | 5456 | |
c3f6f71d JM |
5457 | /* Convert each SAL into a real PC. Verify that the PC can be |
5458 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 5459 | |
b9362cc7 | 5460 | static void |
c3f6f71d JM |
5461 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, |
5462 | char *address) | |
5463 | { | |
5464 | int i; | |
5465 | for (i = 0; i < sals->nelts; i++) | |
ee53e872 | 5466 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
5467 | } |
5468 | ||
05ff989b | 5469 | static void |
0101ce28 JJ |
5470 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) |
5471 | { | |
5472 | struct captured_parse_breakpoint_args *args = data; | |
5473 | ||
5474 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p, | |
5475 | args->not_found_ptr); | |
0101ce28 JJ |
5476 | } |
5477 | ||
018d34a4 VP |
5478 | /* Given TOK, a string specification of condition and thread, as |
5479 | accepted by the 'break' command, extract the condition | |
5480 | string and thread number and set *COND_STRING and *THREAD. | |
5481 | PC identifies the context at which the condition should be parsed. | |
5482 | If no condition is found, *COND_STRING is set to NULL. | |
5483 | If no thread is found, *THREAD is set to -1. */ | |
5484 | static void | |
5485 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
5486 | char **cond_string, int *thread) | |
5487 | { | |
5488 | *cond_string = NULL; | |
5489 | *thread = -1; | |
5490 | while (tok && *tok) | |
5491 | { | |
5492 | char *end_tok; | |
5493 | int toklen; | |
5494 | char *cond_start = NULL; | |
5495 | char *cond_end = NULL; | |
5496 | while (*tok == ' ' || *tok == '\t') | |
5497 | tok++; | |
5498 | ||
5499 | end_tok = tok; | |
5500 | ||
5501 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5502 | end_tok++; | |
5503 | ||
5504 | toklen = end_tok - tok; | |
5505 | ||
5506 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5507 | { | |
5508 | tok = cond_start = end_tok + 1; | |
5509 | parse_exp_1 (&tok, block_for_pc (pc), 0); | |
5510 | cond_end = tok; | |
5511 | *cond_string = savestring (cond_start, | |
5512 | cond_end - cond_start); | |
5513 | } | |
5514 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5515 | { | |
5516 | char *tmptok; | |
5517 | ||
5518 | tok = end_tok + 1; | |
5519 | tmptok = tok; | |
5520 | *thread = strtol (tok, &tok, 0); | |
5521 | if (tok == tmptok) | |
5522 | error (_("Junk after thread keyword.")); | |
5523 | if (!valid_thread_id (*thread)) | |
5524 | error (_("Unknown thread %d."), *thread); | |
5525 | } | |
5526 | else | |
5527 | error (_("Junk at end of arguments.")); | |
5528 | } | |
5529 | } | |
5530 | ||
72b2ff0e VP |
5531 | /* Set a breakpoint. This function is shared between |
5532 | CLI and MI functions for setting a breakpoint. | |
5533 | This function has two major modes of operations, | |
5534 | selected by the PARSE_CONDITION_AND_THREAD parameter. | |
5535 | If non-zero, the function will parse arg, extracting | |
5536 | breakpoint location, address and thread. Otherwise, | |
5537 | ARG is just the location of breakpoint, with condition | |
5538 | and thread specified by the COND_STRING and THREAD | |
5539 | parameters. */ | |
0101ce28 | 5540 | |
98deb0da | 5541 | static void |
72b2ff0e | 5542 | break_command_really (char *arg, char *cond_string, int thread, |
60c46647 VP |
5543 | int parse_condition_and_thread, |
5544 | int tempflag, int hardwareflag, | |
5545 | int ignore_count, | |
5546 | enum auto_boolean pending_break_support, | |
604133b5 | 5547 | struct breakpoint_ops *ops, |
60c46647 | 5548 | int from_tty) |
c3f6f71d | 5549 | { |
71fff37b | 5550 | struct gdb_exception e; |
c3f6f71d | 5551 | struct symtabs_and_lines sals; |
0101ce28 | 5552 | struct symtab_and_line pending_sal; |
0101ce28 JJ |
5553 | char *copy_arg; |
5554 | char *err_msg; | |
c3f6f71d JM |
5555 | char *addr_start = arg; |
5556 | char **addr_string; | |
5557 | struct cleanup *old_chain; | |
5558 | struct cleanup *breakpoint_chain = NULL; | |
0101ce28 | 5559 | struct captured_parse_breakpoint_args parse_args; |
05ff989b | 5560 | int i; |
0101ce28 | 5561 | int pending = 0; |
0101ce28 | 5562 | int not_found = 0; |
c3f6f71d | 5563 | |
c3f6f71d JM |
5564 | sals.sals = NULL; |
5565 | sals.nelts = 0; | |
5566 | addr_string = NULL; | |
c3f6f71d | 5567 | |
0101ce28 JJ |
5568 | parse_args.arg_p = &arg; |
5569 | parse_args.sals_p = &sals; | |
5570 | parse_args.addr_string_p = &addr_string; | |
5571 | parse_args.not_found_ptr = ¬_found; | |
5572 | ||
05ff989b AC |
5573 | e = catch_exception (uiout, do_captured_parse_breakpoint, |
5574 | &parse_args, RETURN_MASK_ALL); | |
0101ce28 JJ |
5575 | |
5576 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 5577 | switch (e.reason) |
0101ce28 | 5578 | { |
05ff989b | 5579 | case RETURN_QUIT: |
98deb0da | 5580 | throw_exception (e); |
05ff989b AC |
5581 | case RETURN_ERROR: |
5582 | switch (e.error) | |
0101ce28 | 5583 | { |
05ff989b | 5584 | case NOT_FOUND_ERROR: |
0101ce28 | 5585 | |
05ff989b AC |
5586 | /* If pending breakpoint support is turned off, throw |
5587 | error. */ | |
fa8d40ab JJ |
5588 | |
5589 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
5590 | throw_exception (e); |
5591 | ||
5592 | exception_print (gdb_stderr, e); | |
fa8d40ab | 5593 | |
05ff989b AC |
5594 | /* If pending breakpoint support is auto query and the user |
5595 | selects no, then simply return the error code. */ | |
fa8d40ab JJ |
5596 | if (pending_break_support == AUTO_BOOLEAN_AUTO && |
5597 | !nquery ("Make breakpoint pending on future shared library load? ")) | |
98deb0da | 5598 | return; |
fa8d40ab | 5599 | |
05ff989b AC |
5600 | /* At this point, either the user was queried about setting |
5601 | a pending breakpoint and selected yes, or pending | |
5602 | breakpoint behavior is on and thus a pending breakpoint | |
5603 | is defaulted on behalf of the user. */ | |
0101ce28 JJ |
5604 | copy_arg = xstrdup (addr_start); |
5605 | addr_string = ©_arg; | |
5606 | sals.nelts = 1; | |
5607 | sals.sals = &pending_sal; | |
5608 | pending_sal.pc = 0; | |
5609 | pending = 1; | |
05ff989b AC |
5610 | break; |
5611 | default: | |
98deb0da | 5612 | throw_exception (e); |
0101ce28 | 5613 | } |
05ff989b AC |
5614 | default: |
5615 | if (!sals.nelts) | |
98deb0da | 5616 | return; |
0101ce28 | 5617 | } |
c3f6f71d JM |
5618 | |
5619 | /* Create a chain of things that always need to be cleaned up. */ | |
5620 | old_chain = make_cleanup (null_cleanup, 0); | |
5621 | ||
0101ce28 JJ |
5622 | if (!pending) |
5623 | { | |
5624 | /* Make sure that all storage allocated to SALS gets freed. */ | |
5625 | make_cleanup (xfree, sals.sals); | |
5626 | ||
5627 | /* Cleanup the addr_string array but not its contents. */ | |
5628 | make_cleanup (xfree, addr_string); | |
5629 | } | |
c3f6f71d | 5630 | |
c3f6f71d JM |
5631 | /* ----------------------------- SNIP ----------------------------- |
5632 | Anything added to the cleanup chain beyond this point is assumed | |
5633 | to be part of a breakpoint. If the breakpoint create succeeds | |
5634 | then the memory is not reclaimed. */ | |
5635 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
5636 | ||
5637 | /* Mark the contents of the addr_string for cleanup. These go on | |
5638 | the breakpoint_chain and only occure if the breakpoint create | |
5639 | fails. */ | |
5640 | for (i = 0; i < sals.nelts; i++) | |
5641 | { | |
5642 | if (addr_string[i] != NULL) | |
b8c9b27d | 5643 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
5644 | } |
5645 | ||
5646 | /* Resolve all line numbers to PC's and verify that the addresses | |
5647 | are ok for the target. */ | |
0101ce28 JJ |
5648 | if (!pending) |
5649 | breakpoint_sals_to_pc (&sals, addr_start); | |
c3f6f71d JM |
5650 | |
5651 | /* Verify that condition can be parsed, before setting any | |
5652 | breakpoints. Allocate a separate condition expression for each | |
5653 | breakpoint. */ | |
0101ce28 | 5654 | if (!pending) |
c3f6f71d | 5655 | { |
2f069f6f | 5656 | if (parse_condition_and_thread) |
72b2ff0e VP |
5657 | { |
5658 | /* Here we only parse 'arg' to separate condition | |
5659 | from thread number, so parsing in context of first | |
5660 | sal is OK. When setting the breakpoint we'll | |
5661 | re-parse it in context of each sal. */ | |
5662 | cond_string = NULL; | |
5663 | thread = -1; | |
5664 | find_condition_and_thread (arg, sals.sals[0].pc, &cond_string, &thread); | |
5665 | if (cond_string) | |
5666 | make_cleanup (xfree, cond_string); | |
5667 | } | |
2f069f6f | 5668 | else |
72b2ff0e VP |
5669 | { |
5670 | /* Create a private copy of condition string. */ | |
5671 | if (cond_string) | |
5672 | { | |
5673 | cond_string = xstrdup (cond_string); | |
5674 | make_cleanup (xfree, cond_string); | |
5675 | } | |
5676 | } | |
018d34a4 | 5677 | create_breakpoints (sals, addr_string, cond_string, |
0101ce28 JJ |
5678 | hardwareflag ? bp_hardware_breakpoint |
5679 | : bp_breakpoint, | |
5680 | tempflag ? disp_del : disp_donttouch, | |
604133b5 | 5681 | thread, ignore_count, ops, from_tty); |
c906108c | 5682 | } |
0101ce28 JJ |
5683 | else |
5684 | { | |
fe3f5fa8 | 5685 | struct symtab_and_line sal = {0}; |
0101ce28 JJ |
5686 | struct breakpoint *b; |
5687 | ||
0101ce28 JJ |
5688 | make_cleanup (xfree, copy_arg); |
5689 | ||
0d381245 VP |
5690 | b = set_raw_breakpoint_without_location (hardwareflag |
5691 | ? bp_hardware_breakpoint | |
5692 | : bp_breakpoint); | |
0101ce28 JJ |
5693 | set_breakpoint_count (breakpoint_count + 1); |
5694 | b->number = breakpoint_count; | |
72b2ff0e | 5695 | b->thread = -1; |
018d34a4 | 5696 | b->addr_string = addr_string[0]; |
72b2ff0e | 5697 | b->cond_string = NULL; |
0101ce28 | 5698 | b->ignore_count = ignore_count; |
0101ce28 | 5699 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 5700 | b->condition_not_parsed = 1; |
604133b5 | 5701 | b->ops = ops; |
74960c60 | 5702 | |
b60e7edf | 5703 | update_global_location_list (1); |
0101ce28 JJ |
5704 | mention (b); |
5705 | } | |
5706 | ||
c3f6f71d | 5707 | if (sals.nelts > 1) |
8a3fe4f8 AC |
5708 | warning (_("Multiple breakpoints were set.\n" |
5709 | "Use the \"delete\" command to delete unwanted breakpoints.")); | |
c3f6f71d JM |
5710 | /* That's it. Discard the cleanups for data inserted into the |
5711 | breakpoint. */ | |
5712 | discard_cleanups (breakpoint_chain); | |
5713 | /* But cleanup everything else. */ | |
5714 | do_cleanups (old_chain); | |
5715 | } | |
c906108c | 5716 | |
72b2ff0e VP |
5717 | /* Set a breakpoint. |
5718 | ARG is a string describing breakpoint address, | |
5719 | condition, and thread. | |
5720 | FLAG specifies if a breakpoint is hardware on, | |
5721 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
5722 | and BP_TEMPFLAG. */ | |
5723 | ||
98deb0da | 5724 | static void |
72b2ff0e | 5725 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 5726 | { |
72b2ff0e VP |
5727 | int hardwareflag = flag & BP_HARDWAREFLAG; |
5728 | int tempflag = flag & BP_TEMPFLAG; | |
c3f6f71d | 5729 | |
98deb0da VP |
5730 | break_command_really (arg, |
5731 | NULL, 0, 1 /* parse arg */, | |
5732 | tempflag, hardwareflag, | |
5733 | 0 /* Ignore count */, | |
604133b5 AR |
5734 | pending_break_support, |
5735 | NULL /* breakpoint_ops */, | |
5736 | from_tty); | |
c906108c SS |
5737 | } |
5738 | ||
72b2ff0e | 5739 | |
98deb0da VP |
5740 | void |
5741 | set_breakpoint (char *address, char *condition, | |
c3f6f71d | 5742 | int hardwareflag, int tempflag, |
ce43223b | 5743 | int thread, int ignore_count, |
98deb0da | 5744 | int pending) |
c3f6f71d | 5745 | { |
98deb0da VP |
5746 | break_command_really (address, condition, thread, |
5747 | 0 /* condition and thread are valid. */, | |
5748 | tempflag, hardwareflag, | |
5749 | ignore_count, | |
5750 | pending | |
5751 | ? AUTO_BOOLEAN_TRUE : AUTO_BOOLEAN_FALSE, | |
604133b5 | 5752 | NULL, 0); |
c3f6f71d JM |
5753 | } |
5754 | ||
6a048695 JB |
5755 | /* Adjust SAL to the first instruction past the function prologue. |
5756 | The end of the prologue is determined using the line table from | |
5757 | the debugging information. | |
5758 | ||
5759 | If SAL is already past the prologue, then do nothing. */ | |
5760 | ||
5761 | static void | |
5762 | skip_prologue_sal (struct symtab_and_line *sal) | |
5763 | { | |
5764 | struct symbol *sym = find_pc_function (sal->pc); | |
5765 | struct symtab_and_line start_sal; | |
5766 | ||
5767 | if (sym == NULL) | |
5768 | return; | |
5769 | ||
5770 | start_sal = find_function_start_sal (sym, 1); | |
5771 | if (sal->pc < start_sal.pc) | |
5772 | *sal = start_sal; | |
5773 | } | |
c3f6f71d | 5774 | |
c906108c SS |
5775 | /* Helper function for break_command_1 and disassemble_command. */ |
5776 | ||
5777 | void | |
fba45db2 | 5778 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
5779 | { |
5780 | CORE_ADDR pc; | |
5781 | ||
5782 | if (sal->pc == 0 && sal->symtab != NULL) | |
5783 | { | |
5784 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 5785 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
5786 | sal->line, sal->symtab->filename); |
5787 | sal->pc = pc; | |
6a048695 JB |
5788 | |
5789 | /* If this SAL corresponds to a breakpoint inserted using | |
5790 | a line number, then skip the function prologue if necessary. */ | |
5791 | if (sal->explicit_line) | |
5792 | skip_prologue_sal (sal); | |
c906108c SS |
5793 | } |
5794 | ||
5795 | if (sal->section == 0 && sal->symtab != NULL) | |
5796 | { | |
5797 | struct blockvector *bv; | |
c5aa993b JM |
5798 | struct block *b; |
5799 | struct symbol *sym; | |
c906108c | 5800 | |
801e3a5b | 5801 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
5802 | if (bv != NULL) |
5803 | { | |
7f0df278 | 5804 | sym = block_linkage_function (b); |
c906108c SS |
5805 | if (sym != NULL) |
5806 | { | |
5807 | fixup_symbol_section (sym, sal->symtab->objfile); | |
714835d5 | 5808 | sal->section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
5809 | } |
5810 | else | |
5811 | { | |
5812 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
5813 | have to look harder. This case can be executed if we have |
5814 | line numbers but no functions (as can happen in assembly | |
5815 | source). */ | |
c906108c | 5816 | |
c5aa993b | 5817 | struct minimal_symbol *msym; |
c906108c SS |
5818 | |
5819 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
5820 | if (msym) | |
714835d5 | 5821 | sal->section = SYMBOL_OBJ_SECTION (msym); |
c906108c SS |
5822 | } |
5823 | } | |
5824 | } | |
5825 | } | |
5826 | ||
5827 | void | |
fba45db2 | 5828 | break_command (char *arg, int from_tty) |
c906108c | 5829 | { |
db107f19 | 5830 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
5831 | } |
5832 | ||
c906108c | 5833 | void |
fba45db2 | 5834 | tbreak_command (char *arg, int from_tty) |
c906108c | 5835 | { |
db107f19 | 5836 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
5837 | } |
5838 | ||
c906108c | 5839 | static void |
fba45db2 | 5840 | hbreak_command (char *arg, int from_tty) |
c906108c | 5841 | { |
db107f19 | 5842 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
5843 | } |
5844 | ||
5845 | static void | |
fba45db2 | 5846 | thbreak_command (char *arg, int from_tty) |
c906108c | 5847 | { |
db107f19 | 5848 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
5849 | } |
5850 | ||
5851 | static void | |
fba45db2 | 5852 | stop_command (char *arg, int from_tty) |
c906108c | 5853 | { |
a3f17187 | 5854 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 5855 | Usage: stop in <function | address>\n\ |
a3f17187 | 5856 | stop at <line>\n")); |
c906108c SS |
5857 | } |
5858 | ||
5859 | static void | |
fba45db2 | 5860 | stopin_command (char *arg, int from_tty) |
c906108c SS |
5861 | { |
5862 | int badInput = 0; | |
5863 | ||
c5aa993b | 5864 | if (arg == (char *) NULL) |
c906108c SS |
5865 | badInput = 1; |
5866 | else if (*arg != '*') | |
5867 | { | |
5868 | char *argptr = arg; | |
5869 | int hasColon = 0; | |
5870 | ||
53a5351d JM |
5871 | /* look for a ':'. If this is a line number specification, then |
5872 | say it is bad, otherwise, it should be an address or | |
5873 | function/method name */ | |
c906108c | 5874 | while (*argptr && !hasColon) |
c5aa993b JM |
5875 | { |
5876 | hasColon = (*argptr == ':'); | |
5877 | argptr++; | |
5878 | } | |
c906108c SS |
5879 | |
5880 | if (hasColon) | |
c5aa993b | 5881 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 5882 | else |
c5aa993b | 5883 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
5884 | } |
5885 | ||
5886 | if (badInput) | |
a3f17187 | 5887 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 5888 | else |
db107f19 | 5889 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
5890 | } |
5891 | ||
5892 | static void | |
fba45db2 | 5893 | stopat_command (char *arg, int from_tty) |
c906108c SS |
5894 | { |
5895 | int badInput = 0; | |
5896 | ||
c5aa993b | 5897 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
5898 | badInput = 1; |
5899 | else | |
5900 | { | |
5901 | char *argptr = arg; | |
5902 | int hasColon = 0; | |
5903 | ||
5904 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 5905 | it is probably a line number. */ |
c906108c | 5906 | while (*argptr && !hasColon) |
c5aa993b JM |
5907 | { |
5908 | hasColon = (*argptr == ':'); | |
5909 | argptr++; | |
5910 | } | |
c906108c SS |
5911 | |
5912 | if (hasColon) | |
c5aa993b | 5913 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 5914 | else |
c5aa993b | 5915 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
5916 | } |
5917 | ||
5918 | if (badInput) | |
a3f17187 | 5919 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 5920 | else |
db107f19 | 5921 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
5922 | } |
5923 | ||
53a5351d JM |
5924 | /* accessflag: hw_write: watch write, |
5925 | hw_read: watch read, | |
5926 | hw_access: watch access (read or write) */ | |
c906108c | 5927 | static void |
fba45db2 | 5928 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c | 5929 | { |
d983da9c | 5930 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c SS |
5931 | struct symtab_and_line sal; |
5932 | struct expression *exp; | |
5933 | struct block *exp_valid_block; | |
5934 | struct value *val, *mark; | |
5935 | struct frame_info *frame; | |
5936 | struct frame_info *prev_frame = NULL; | |
5937 | char *exp_start = NULL; | |
5938 | char *exp_end = NULL; | |
37e4754d | 5939 | char *tok, *id_tok_start, *end_tok; |
c906108c SS |
5940 | int toklen; |
5941 | char *cond_start = NULL; | |
5942 | char *cond_end = NULL; | |
5943 | struct expression *cond = NULL; | |
5944 | int i, other_type_used, target_resources_ok = 0; | |
5945 | enum bptype bp_type; | |
5946 | int mem_cnt = 0; | |
37e4754d | 5947 | int thread = -1; |
c906108c | 5948 | |
fe39c653 | 5949 | init_sal (&sal); /* initialize to zeroes */ |
c5aa993b | 5950 | |
37e4754d LM |
5951 | /* Make sure that we actually have parameters to parse. */ |
5952 | if (arg != NULL && arg[0] != '\0') | |
5953 | { | |
5954 | toklen = strlen (arg); /* Size of argument list. */ | |
5955 | ||
5956 | /* Points tok to the end of the argument list. */ | |
5957 | tok = arg + toklen - 1; | |
5958 | ||
5959 | /* Go backwards in the parameters list. Skip the last parameter. | |
5960 | If we're expecting a 'thread <thread_num>' parameter, this should | |
5961 | be the thread identifier. */ | |
5962 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
5963 | tok--; | |
5964 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
5965 | tok--; | |
5966 | ||
5967 | /* Points end_tok to the beginning of the last token. */ | |
5968 | id_tok_start = tok + 1; | |
5969 | ||
5970 | /* Go backwards in the parameters list. Skip one more parameter. | |
5971 | If we're expecting a 'thread <thread_num>' parameter, we should | |
5972 | reach a "thread" token. */ | |
5973 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
5974 | tok--; | |
5975 | ||
5976 | end_tok = tok; | |
5977 | ||
5978 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
5979 | tok--; | |
5980 | ||
5981 | /* Move the pointer forward to skip the whitespace and | |
5982 | calculate the length of the token. */ | |
5983 | tok++; | |
5984 | toklen = end_tok - tok; | |
5985 | ||
5986 | if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5987 | { | |
5988 | /* At this point we've found a "thread" token, which means | |
5989 | the user is trying to set a watchpoint that triggers | |
5990 | only in a specific thread. */ | |
5991 | char *endp; | |
5992 | ||
5993 | /* Extract the thread ID from the next token. */ | |
5994 | thread = strtol (id_tok_start, &endp, 0); | |
5995 | ||
5996 | /* Check if the user provided a valid numeric value for the | |
5997 | thread ID. */ | |
5998 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
5999 | error (_("Invalid thread ID specification %s."), id_tok_start); | |
6000 | ||
6001 | /* Check if the thread actually exists. */ | |
6002 | if (!valid_thread_id (thread)) | |
6003 | error (_("Unknown thread %d."), thread); | |
6004 | ||
6005 | /* Truncate the string and get rid of the thread <thread_num> | |
6006 | parameter before the parameter list is parsed by the | |
6007 | evaluate_expression() function. */ | |
6008 | *tok = '\0'; | |
6009 | } | |
6010 | } | |
6011 | ||
6012 | /* Parse the rest of the arguments. */ | |
c906108c SS |
6013 | innermost_block = NULL; |
6014 | exp_start = arg; | |
6015 | exp = parse_exp_1 (&arg, 0, 0); | |
6016 | exp_end = arg; | |
6017 | exp_valid_block = innermost_block; | |
6018 | mark = value_mark (); | |
fa4727a6 DJ |
6019 | fetch_watchpoint_value (exp, &val, NULL, NULL); |
6020 | if (val != NULL) | |
6021 | release_value (val); | |
c906108c SS |
6022 | |
6023 | tok = arg; | |
6024 | while (*tok == ' ' || *tok == '\t') | |
6025 | tok++; | |
6026 | end_tok = tok; | |
6027 | ||
6028 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
6029 | end_tok++; | |
6030 | ||
6031 | toklen = end_tok - tok; | |
6032 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
6033 | { | |
6034 | tok = cond_start = end_tok + 1; | |
6035 | cond = parse_exp_1 (&tok, 0, 0); | |
6036 | cond_end = tok; | |
6037 | } | |
6038 | if (*tok) | |
8a3fe4f8 | 6039 | error (_("Junk at end of command.")); |
c906108c | 6040 | |
53a5351d | 6041 | if (accessflag == hw_read) |
c5aa993b | 6042 | bp_type = bp_read_watchpoint; |
53a5351d | 6043 | else if (accessflag == hw_access) |
c5aa993b JM |
6044 | bp_type = bp_access_watchpoint; |
6045 | else | |
6046 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
6047 | |
6048 | mem_cnt = can_use_hardware_watchpoint (val); | |
6049 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
8a3fe4f8 | 6050 | error (_("Expression cannot be implemented with read/access watchpoint.")); |
c5aa993b JM |
6051 | if (mem_cnt != 0) |
6052 | { | |
6053 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d JM |
6054 | target_resources_ok = |
6055 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type, i + mem_cnt, | |
6056 | other_type_used); | |
c5aa993b | 6057 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 6058 | error (_("Target does not support this type of hardware watchpoint.")); |
53a5351d | 6059 | |
c5aa993b | 6060 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 6061 | error (_("Target can only support one kind of HW watchpoint at a time.")); |
c5aa993b | 6062 | } |
c906108c | 6063 | |
4d28f7a8 KB |
6064 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
6065 | watchpoint could not be set. */ | |
6066 | if (!mem_cnt || target_resources_ok <= 0) | |
6067 | bp_type = bp_watchpoint; | |
6068 | ||
d983da9c DJ |
6069 | frame = block_innermost_frame (exp_valid_block); |
6070 | if (frame) | |
6071 | prev_frame = get_prev_frame (frame); | |
6072 | else | |
6073 | prev_frame = NULL; | |
6074 | ||
6075 | /* If the expression is "local", then set up a "watchpoint scope" | |
6076 | breakpoint at the point where we've left the scope of the watchpoint | |
6077 | expression. Create the scope breakpoint before the watchpoint, so | |
6078 | that we will encounter it first in bpstat_stop_status. */ | |
6079 | if (innermost_block && prev_frame) | |
6080 | { | |
6081 | scope_breakpoint = create_internal_breakpoint (get_frame_pc (prev_frame), | |
6082 | bp_watchpoint_scope); | |
6083 | ||
6084 | scope_breakpoint->enable_state = bp_enabled; | |
6085 | ||
6086 | /* Automatically delete the breakpoint when it hits. */ | |
6087 | scope_breakpoint->disposition = disp_del; | |
6088 | ||
6089 | /* Only break in the proper frame (help with recursion). */ | |
6090 | scope_breakpoint->frame_id = get_frame_id (prev_frame); | |
6091 | ||
6092 | /* Set the address at which we will stop. */ | |
6093 | scope_breakpoint->loc->requested_address | |
6094 | = get_frame_pc (prev_frame); | |
6095 | scope_breakpoint->loc->address | |
6096 | = adjust_breakpoint_address (scope_breakpoint->loc->requested_address, | |
6097 | scope_breakpoint->type); | |
6098 | } | |
6099 | ||
c906108c | 6100 | /* Now set up the breakpoint. */ |
4d28f7a8 | 6101 | b = set_raw_breakpoint (sal, bp_type); |
c906108c SS |
6102 | set_breakpoint_count (breakpoint_count + 1); |
6103 | b->number = breakpoint_count; | |
37e4754d | 6104 | b->thread = thread; |
b5de0fa7 | 6105 | b->disposition = disp_donttouch; |
c906108c SS |
6106 | b->exp = exp; |
6107 | b->exp_valid_block = exp_valid_block; | |
6108 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
6109 | b->val = val; | |
fa4727a6 | 6110 | b->val_valid = 1; |
511a6cd4 | 6111 | b->loc->cond = cond; |
c906108c SS |
6112 | if (cond_start) |
6113 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
6114 | else | |
6115 | b->cond_string = 0; | |
c5aa993b | 6116 | |
c906108c | 6117 | if (frame) |
d983da9c | 6118 | b->watchpoint_frame = get_frame_id (frame); |
c906108c | 6119 | else |
35a487f1 | 6120 | b->watchpoint_frame = null_frame_id; |
c906108c | 6121 | |
d983da9c | 6122 | if (scope_breakpoint != NULL) |
c906108c | 6123 | { |
d983da9c DJ |
6124 | /* The scope breakpoint is related to the watchpoint. We will |
6125 | need to act on them together. */ | |
6126 | b->related_breakpoint = scope_breakpoint; | |
6127 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 6128 | } |
d983da9c | 6129 | |
c906108c SS |
6130 | value_free_to_mark (mark); |
6131 | mention (b); | |
b60e7edf | 6132 | update_global_location_list (1); |
c906108c SS |
6133 | } |
6134 | ||
6135 | /* Return count of locations need to be watched and can be handled | |
6136 | in hardware. If the watchpoint can not be handled | |
6137 | in hardware return zero. */ | |
6138 | ||
c906108c | 6139 | static int |
fba45db2 | 6140 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
6141 | { |
6142 | int found_memory_cnt = 0; | |
2e70b7b9 | 6143 | struct value *head = v; |
c906108c SS |
6144 | |
6145 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 6146 | if (!can_use_hw_watchpoints) |
c906108c | 6147 | return 0; |
c5aa993b | 6148 | |
5c44784c JM |
6149 | /* Make sure that the value of the expression depends only upon |
6150 | memory contents, and values computed from them within GDB. If we | |
6151 | find any register references or function calls, we can't use a | |
6152 | hardware watchpoint. | |
6153 | ||
6154 | The idea here is that evaluating an expression generates a series | |
6155 | of values, one holding the value of every subexpression. (The | |
6156 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
6157 | a*b+c.) GDB's values hold almost enough information to establish | |
6158 | the criteria given above --- they identify memory lvalues, | |
6159 | register lvalues, computed values, etcetera. So we can evaluate | |
6160 | the expression, and then scan the chain of values that leaves | |
6161 | behind to decide whether we can detect any possible change to the | |
6162 | expression's final value using only hardware watchpoints. | |
6163 | ||
6164 | However, I don't think that the values returned by inferior | |
6165 | function calls are special in any way. So this function may not | |
6166 | notice that an expression involving an inferior function call | |
6167 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 6168 | for (; v; v = value_next (v)) |
c906108c | 6169 | { |
5c44784c | 6170 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 6171 | { |
d69fe07e | 6172 | if (value_lazy (v)) |
5c44784c JM |
6173 | /* A lazy memory lvalue is one that GDB never needed to fetch; |
6174 | we either just used its address (e.g., `a' in `a.b') or | |
6175 | we never needed it at all (e.g., `a' in `a,b'). */ | |
6176 | ; | |
53a5351d | 6177 | else |
5c44784c JM |
6178 | { |
6179 | /* Ahh, memory we actually used! Check if we can cover | |
6180 | it with hardware watchpoints. */ | |
df407dfe | 6181 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
6182 | |
6183 | /* We only watch structs and arrays if user asked for it | |
6184 | explicitly, never if they just happen to appear in a | |
6185 | middle of some value chain. */ | |
6186 | if (v == head | |
6187 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
6188 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
6189 | { | |
df407dfe AC |
6190 | CORE_ADDR vaddr = VALUE_ADDRESS (v) + value_offset (v); |
6191 | int len = TYPE_LENGTH (value_type (v)); | |
2e70b7b9 MS |
6192 | |
6193 | if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len)) | |
6194 | return 0; | |
6195 | else | |
6196 | found_memory_cnt++; | |
6197 | } | |
5c44784c | 6198 | } |
c5aa993b | 6199 | } |
5086187c AC |
6200 | else if (VALUE_LVAL (v) != not_lval |
6201 | && deprecated_value_modifiable (v) == 0) | |
53a5351d | 6202 | return 0; /* ??? What does this represent? */ |
5086187c | 6203 | else if (VALUE_LVAL (v) == lval_register) |
53a5351d | 6204 | return 0; /* cannot watch a register with a HW watchpoint */ |
c906108c SS |
6205 | } |
6206 | ||
6207 | /* The expression itself looks suitable for using a hardware | |
6208 | watchpoint, but give the target machine a chance to reject it. */ | |
6209 | return found_memory_cnt; | |
6210 | } | |
6211 | ||
8b93c638 | 6212 | void |
fba45db2 | 6213 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6214 | { |
6215 | watch_command (arg, from_tty); | |
6216 | } | |
8926118c | 6217 | |
c5aa993b | 6218 | static void |
fba45db2 | 6219 | watch_command (char *arg, int from_tty) |
c906108c | 6220 | { |
53a5351d | 6221 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
6222 | } |
6223 | ||
8b93c638 | 6224 | void |
fba45db2 | 6225 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6226 | { |
6227 | rwatch_command (arg, from_tty); | |
6228 | } | |
8926118c | 6229 | |
c5aa993b | 6230 | static void |
fba45db2 | 6231 | rwatch_command (char *arg, int from_tty) |
c906108c | 6232 | { |
53a5351d | 6233 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
6234 | } |
6235 | ||
8b93c638 | 6236 | void |
fba45db2 | 6237 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6238 | { |
6239 | awatch_command (arg, from_tty); | |
6240 | } | |
8926118c | 6241 | |
c5aa993b | 6242 | static void |
fba45db2 | 6243 | awatch_command (char *arg, int from_tty) |
c906108c | 6244 | { |
53a5351d | 6245 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 6246 | } |
c906108c | 6247 | \f |
c5aa993b | 6248 | |
43ff13b4 | 6249 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
6250 | because it uses the mechanisms of breakpoints. */ |
6251 | ||
bfec99b2 PA |
6252 | struct until_break_command_continuation_args |
6253 | { | |
6254 | struct breakpoint *breakpoint; | |
6255 | struct breakpoint *breakpoint2; | |
6256 | }; | |
6257 | ||
43ff13b4 JM |
6258 | /* This function is called by fetch_inferior_event via the |
6259 | cmd_continuation pointer, to complete the until command. It takes | |
6260 | care of cleaning up the temporary breakpoints set up by the until | |
6261 | command. */ | |
c2c6d25f | 6262 | static void |
604ead4a | 6263 | until_break_command_continuation (void *arg) |
43ff13b4 | 6264 | { |
bfec99b2 PA |
6265 | struct until_break_command_continuation_args *a = arg; |
6266 | ||
6267 | delete_breakpoint (a->breakpoint); | |
6268 | if (a->breakpoint2) | |
6269 | delete_breakpoint (a->breakpoint2); | |
43ff13b4 JM |
6270 | } |
6271 | ||
c906108c | 6272 | void |
ae66c1fc | 6273 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
6274 | { |
6275 | struct symtabs_and_lines sals; | |
6276 | struct symtab_and_line sal; | |
206415a3 DJ |
6277 | struct frame_info *frame = get_selected_frame (NULL); |
6278 | struct frame_info *prev_frame = get_prev_frame (frame); | |
c906108c | 6279 | struct breakpoint *breakpoint; |
f107f563 | 6280 | struct breakpoint *breakpoint2 = NULL; |
c906108c SS |
6281 | struct cleanup *old_chain; |
6282 | ||
6283 | clear_proceed_status (); | |
6284 | ||
6285 | /* Set a breakpoint where the user wants it and at return from | |
6286 | this function */ | |
c5aa993b | 6287 | |
c906108c SS |
6288 | if (default_breakpoint_valid) |
6289 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 6290 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 6291 | else |
53a5351d | 6292 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 6293 | 0, (char ***) NULL, NULL); |
c5aa993b | 6294 | |
c906108c | 6295 | if (sals.nelts != 1) |
8a3fe4f8 | 6296 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 6297 | |
c906108c | 6298 | sal = sals.sals[0]; |
b8c9b27d | 6299 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 6300 | |
c906108c | 6301 | if (*arg) |
8a3fe4f8 | 6302 | error (_("Junk at end of arguments.")); |
c5aa993b | 6303 | |
c906108c | 6304 | resolve_sal_pc (&sal); |
c5aa993b | 6305 | |
ae66c1fc EZ |
6306 | if (anywhere) |
6307 | /* If the user told us to continue until a specified location, | |
6308 | we don't specify a frame at which we need to stop. */ | |
6309 | breakpoint = set_momentary_breakpoint (sal, null_frame_id, bp_until); | |
6310 | else | |
6311 | /* Otherwise, specify the current frame, because we want to stop only | |
6312 | at the very same frame. */ | |
206415a3 | 6313 | breakpoint = set_momentary_breakpoint (sal, get_frame_id (frame), |
ae66c1fc | 6314 | bp_until); |
c5aa993b | 6315 | |
f107f563 | 6316 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
c906108c | 6317 | |
ae66c1fc EZ |
6318 | /* Keep within the current frame, or in frames called by the current |
6319 | one. */ | |
c906108c SS |
6320 | if (prev_frame) |
6321 | { | |
30f7db39 AC |
6322 | sal = find_pc_line (get_frame_pc (prev_frame), 0); |
6323 | sal.pc = get_frame_pc (prev_frame); | |
f107f563 VP |
6324 | breakpoint2 = set_momentary_breakpoint (sal, get_frame_id (prev_frame), |
6325 | bp_until); | |
6326 | make_cleanup_delete_breakpoint (breakpoint2); | |
c906108c | 6327 | } |
c5aa993b | 6328 | |
c906108c | 6329 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
f107f563 VP |
6330 | |
6331 | /* If we are running asynchronously, and proceed call above has actually | |
6332 | managed to start the target, arrange for breakpoints to be | |
6333 | deleted when the target stops. Otherwise, we're already stopped and | |
6334 | delete breakpoints via cleanup chain. */ | |
6335 | ||
8ea051c5 | 6336 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 6337 | { |
bfec99b2 PA |
6338 | struct until_break_command_continuation_args *args; |
6339 | args = xmalloc (sizeof (*args)); | |
f107f563 | 6340 | |
bfec99b2 PA |
6341 | args->breakpoint = breakpoint; |
6342 | args->breakpoint2 = breakpoint2; | |
f107f563 VP |
6343 | |
6344 | discard_cleanups (old_chain); | |
95e54da7 PA |
6345 | add_continuation (inferior_thread (), |
6346 | until_break_command_continuation, args, | |
604ead4a | 6347 | xfree); |
f107f563 VP |
6348 | } |
6349 | else | |
c5aa993b | 6350 | do_cleanups (old_chain); |
c906108c | 6351 | } |
ae66c1fc | 6352 | |
c906108c | 6353 | static void |
fba45db2 | 6354 | ep_skip_leading_whitespace (char **s) |
c906108c | 6355 | { |
c5aa993b JM |
6356 | if ((s == NULL) || (*s == NULL)) |
6357 | return; | |
6358 | while (isspace (**s)) | |
6359 | *s += 1; | |
c906108c | 6360 | } |
c5aa993b | 6361 | |
c906108c SS |
6362 | /* This function attempts to parse an optional "if <cond>" clause |
6363 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 6364 | |
c906108c SS |
6365 | Else, it returns a pointer to the condition string. (It does not |
6366 | attempt to evaluate the string against a particular block.) And, | |
6367 | it updates arg to point to the first character following the parsed | |
6368 | if clause in the arg string. */ | |
53a5351d | 6369 | |
c906108c | 6370 | static char * |
fba45db2 | 6371 | ep_parse_optional_if_clause (char **arg) |
c906108c | 6372 | { |
c5aa993b JM |
6373 | char *cond_string; |
6374 | ||
6375 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 6376 | return NULL; |
c5aa993b | 6377 | |
c906108c SS |
6378 | /* Skip the "if" keyword. */ |
6379 | (*arg) += 2; | |
c5aa993b | 6380 | |
c906108c SS |
6381 | /* Skip any extra leading whitespace, and record the start of the |
6382 | condition string. */ | |
6383 | ep_skip_leading_whitespace (arg); | |
6384 | cond_string = *arg; | |
c5aa993b | 6385 | |
c906108c SS |
6386 | /* Assume that the condition occupies the remainder of the arg string. */ |
6387 | (*arg) += strlen (cond_string); | |
c5aa993b | 6388 | |
c906108c SS |
6389 | return cond_string; |
6390 | } | |
c5aa993b | 6391 | |
c906108c SS |
6392 | /* This function attempts to parse an optional filename from the arg |
6393 | string. If one is not found, it returns NULL. | |
c5aa993b | 6394 | |
c906108c SS |
6395 | Else, it returns a pointer to the parsed filename. (This function |
6396 | makes no attempt to verify that a file of that name exists, or is | |
6397 | accessible.) And, it updates arg to point to the first character | |
6398 | following the parsed filename in the arg string. | |
c5aa993b | 6399 | |
c906108c SS |
6400 | Note that clients needing to preserve the returned filename for |
6401 | future access should copy it to their own buffers. */ | |
6402 | static char * | |
fba45db2 | 6403 | ep_parse_optional_filename (char **arg) |
c906108c | 6404 | { |
c5aa993b JM |
6405 | static char filename[1024]; |
6406 | char *arg_p = *arg; | |
6407 | int i; | |
6408 | char c; | |
6409 | ||
c906108c SS |
6410 | if ((*arg_p == '\0') || isspace (*arg_p)) |
6411 | return NULL; | |
c5aa993b JM |
6412 | |
6413 | for (i = 0;; i++) | |
c906108c SS |
6414 | { |
6415 | c = *arg_p; | |
6416 | if (isspace (c)) | |
c5aa993b | 6417 | c = '\0'; |
c906108c SS |
6418 | filename[i] = c; |
6419 | if (c == '\0') | |
c5aa993b | 6420 | break; |
c906108c SS |
6421 | arg_p++; |
6422 | } | |
6423 | *arg = arg_p; | |
c5aa993b | 6424 | |
c906108c SS |
6425 | return filename; |
6426 | } | |
c5aa993b | 6427 | |
c906108c SS |
6428 | /* Commands to deal with catching events, such as signals, exceptions, |
6429 | process start/exit, etc. */ | |
c5aa993b JM |
6430 | |
6431 | typedef enum | |
6432 | { | |
44feb3ce TT |
6433 | catch_fork_temporary, catch_vfork_temporary, |
6434 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
6435 | } |
6436 | catch_fork_kind; | |
6437 | ||
c906108c | 6438 | static void |
44feb3ce | 6439 | catch_fork_command_1 (char *arg, int from_tty, struct cmd_list_element *command) |
c906108c | 6440 | { |
c5aa993b | 6441 | char *cond_string = NULL; |
44feb3ce TT |
6442 | catch_fork_kind fork_kind; |
6443 | int tempflag; | |
6444 | ||
6445 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
6446 | tempflag = (fork_kind == catch_fork_temporary | |
6447 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 6448 | |
44feb3ce TT |
6449 | if (!arg) |
6450 | arg = ""; | |
c906108c | 6451 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6452 | |
c906108c | 6453 | /* The allowed syntax is: |
c5aa993b JM |
6454 | catch [v]fork |
6455 | catch [v]fork if <cond> | |
6456 | ||
c906108c SS |
6457 | First, check if there's an if clause. */ |
6458 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6459 | |
c906108c | 6460 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6461 | error (_("Junk at end of arguments.")); |
c5aa993b | 6462 | |
c906108c SS |
6463 | /* If this target supports it, create a fork or vfork catchpoint |
6464 | and enable reporting of such events. */ | |
c5aa993b JM |
6465 | switch (fork_kind) |
6466 | { | |
44feb3ce TT |
6467 | case catch_fork_temporary: |
6468 | case catch_fork_permanent: | |
c906108c SS |
6469 | create_fork_event_catchpoint (tempflag, cond_string); |
6470 | break; | |
44feb3ce TT |
6471 | case catch_vfork_temporary: |
6472 | case catch_vfork_permanent: | |
c906108c SS |
6473 | create_vfork_event_catchpoint (tempflag, cond_string); |
6474 | break; | |
c5aa993b | 6475 | default: |
8a3fe4f8 | 6476 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 6477 | break; |
c5aa993b | 6478 | } |
c906108c SS |
6479 | } |
6480 | ||
6481 | static void | |
44feb3ce | 6482 | catch_exec_command_1 (char *arg, int from_tty, struct cmd_list_element *command) |
c906108c | 6483 | { |
44feb3ce | 6484 | int tempflag; |
c5aa993b | 6485 | char *cond_string = NULL; |
c906108c | 6486 | |
44feb3ce TT |
6487 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
6488 | ||
6489 | if (!arg) | |
6490 | arg = ""; | |
c906108c SS |
6491 | ep_skip_leading_whitespace (&arg); |
6492 | ||
6493 | /* The allowed syntax is: | |
c5aa993b JM |
6494 | catch exec |
6495 | catch exec if <cond> | |
c906108c SS |
6496 | |
6497 | First, check if there's an if clause. */ | |
6498 | cond_string = ep_parse_optional_if_clause (&arg); | |
6499 | ||
6500 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6501 | error (_("Junk at end of arguments.")); |
c906108c SS |
6502 | |
6503 | /* If this target supports it, create an exec catchpoint | |
6504 | and enable reporting of such events. */ | |
6505 | create_exec_event_catchpoint (tempflag, cond_string); | |
6506 | } | |
c5aa993b | 6507 | |
c906108c | 6508 | static void |
44feb3ce | 6509 | catch_load_command_1 (char *arg, int from_tty, struct cmd_list_element *command) |
c906108c | 6510 | { |
44feb3ce | 6511 | int tempflag; |
c5aa993b JM |
6512 | char *dll_pathname = NULL; |
6513 | char *cond_string = NULL; | |
6514 | ||
44feb3ce TT |
6515 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
6516 | ||
6517 | if (!arg) | |
6518 | arg = ""; | |
c906108c | 6519 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6520 | |
c906108c | 6521 | /* The allowed syntax is: |
c5aa993b JM |
6522 | catch load |
6523 | catch load if <cond> | |
6524 | catch load <filename> | |
6525 | catch load <filename> if <cond> | |
6526 | ||
c906108c SS |
6527 | The user is not allowed to specify the <filename> after an |
6528 | if clause. | |
c5aa993b | 6529 | |
c906108c | 6530 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6531 | |
c906108c SS |
6532 | First, check if there's an if clause. If so, then there |
6533 | cannot be a filename. */ | |
6534 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6535 | |
c906108c SS |
6536 | /* If there was an if clause, then there cannot be a filename. |
6537 | Else, there might be a filename and an if clause. */ | |
6538 | if (cond_string == NULL) | |
6539 | { | |
6540 | dll_pathname = ep_parse_optional_filename (&arg); | |
6541 | ep_skip_leading_whitespace (&arg); | |
6542 | cond_string = ep_parse_optional_if_clause (&arg); | |
6543 | } | |
c5aa993b | 6544 | |
c906108c | 6545 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6546 | error (_("Junk at end of arguments.")); |
c5aa993b | 6547 | |
c906108c SS |
6548 | /* Create a load breakpoint that only triggers when a load of |
6549 | the specified dll (or any dll, if no pathname was specified) | |
6550 | occurs. */ | |
39f77062 | 6551 | SOLIB_CREATE_CATCH_LOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6552 | dll_pathname, cond_string); |
c906108c | 6553 | } |
c5aa993b | 6554 | |
c906108c | 6555 | static void |
44feb3ce TT |
6556 | catch_unload_command_1 (char *arg, int from_tty, |
6557 | struct cmd_list_element *command) | |
c906108c | 6558 | { |
44feb3ce | 6559 | int tempflag; |
c5aa993b JM |
6560 | char *dll_pathname = NULL; |
6561 | char *cond_string = NULL; | |
6562 | ||
44feb3ce TT |
6563 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
6564 | ||
6565 | if (!arg) | |
6566 | arg = ""; | |
c906108c | 6567 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6568 | |
c906108c | 6569 | /* The allowed syntax is: |
c5aa993b JM |
6570 | catch unload |
6571 | catch unload if <cond> | |
6572 | catch unload <filename> | |
6573 | catch unload <filename> if <cond> | |
6574 | ||
c906108c SS |
6575 | The user is not allowed to specify the <filename> after an |
6576 | if clause. | |
c5aa993b | 6577 | |
c906108c | 6578 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6579 | |
c906108c SS |
6580 | First, check if there's an if clause. If so, then there |
6581 | cannot be a filename. */ | |
6582 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6583 | |
c906108c SS |
6584 | /* If there was an if clause, then there cannot be a filename. |
6585 | Else, there might be a filename and an if clause. */ | |
6586 | if (cond_string == NULL) | |
6587 | { | |
6588 | dll_pathname = ep_parse_optional_filename (&arg); | |
6589 | ep_skip_leading_whitespace (&arg); | |
6590 | cond_string = ep_parse_optional_if_clause (&arg); | |
6591 | } | |
c5aa993b | 6592 | |
c906108c | 6593 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6594 | error (_("Junk at end of arguments.")); |
c5aa993b | 6595 | |
c906108c SS |
6596 | /* Create an unload breakpoint that only triggers when an unload of |
6597 | the specified dll (or any dll, if no pathname was specified) | |
6598 | occurs. */ | |
39f77062 | 6599 | SOLIB_CREATE_CATCH_UNLOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6600 | dll_pathname, cond_string); |
c906108c | 6601 | } |
c906108c | 6602 | |
3086aeae DJ |
6603 | static enum print_stop_action |
6604 | print_exception_catchpoint (struct breakpoint *b) | |
6605 | { | |
ade92717 | 6606 | int bp_temp, bp_throw; |
3086aeae | 6607 | |
ade92717 | 6608 | annotate_catchpoint (b->number); |
3086aeae | 6609 | |
ade92717 AR |
6610 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
6611 | if (b->loc->address != b->loc->requested_address) | |
6612 | breakpoint_adjustment_warning (b->loc->requested_address, | |
6613 | b->loc->address, | |
6614 | b->number, 1); | |
6615 | bp_temp = b->loc->owner->disposition == disp_del; | |
6616 | ui_out_text (uiout, | |
6617 | bp_temp ? "Temporary catchpoint " | |
6618 | : "Catchpoint "); | |
6619 | if (!ui_out_is_mi_like_p (uiout)) | |
6620 | ui_out_field_int (uiout, "bkptno", b->number); | |
6621 | ui_out_text (uiout, | |
c0b37c48 AR |
6622 | bp_throw ? " (exception thrown), " |
6623 | : " (exception caught), "); | |
ade92717 AR |
6624 | if (ui_out_is_mi_like_p (uiout)) |
6625 | { | |
6626 | ui_out_field_string (uiout, "reason", | |
6627 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
6628 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
6629 | ui_out_field_int (uiout, "bkptno", b->number); | |
6630 | } | |
3086aeae DJ |
6631 | return PRINT_SRC_AND_LOC; |
6632 | } | |
6633 | ||
6634 | static void | |
6635 | print_one_exception_catchpoint (struct breakpoint *b, CORE_ADDR *last_addr) | |
6636 | { | |
6637 | if (addressprint) | |
6638 | { | |
6639 | annotate_field (4); | |
604133b5 AR |
6640 | if (b->loc == NULL || b->loc->shlib_disabled) |
6641 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
6642 | else | |
6643 | ui_out_field_core_addr (uiout, "addr", b->loc->address); | |
3086aeae DJ |
6644 | } |
6645 | annotate_field (5); | |
604133b5 AR |
6646 | if (b->loc) |
6647 | *last_addr = b->loc->address; | |
3086aeae DJ |
6648 | if (strstr (b->addr_string, "throw") != NULL) |
6649 | ui_out_field_string (uiout, "what", "exception throw"); | |
6650 | else | |
6651 | ui_out_field_string (uiout, "what", "exception catch"); | |
6652 | } | |
6653 | ||
6654 | static void | |
6655 | print_mention_exception_catchpoint (struct breakpoint *b) | |
6656 | { | |
ade92717 AR |
6657 | int bp_temp; |
6658 | int bp_throw; | |
6659 | ||
6660 | bp_temp = b->loc->owner->disposition == disp_del; | |
6661 | bp_throw = strstr (b->addr_string, "throw") != NULL; | |
6662 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
6663 | : _("Catchpoint ")); | |
6664 | ui_out_field_int (uiout, "bkptno", b->number); | |
6665 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
6666 | : _(" (catch)")); | |
3086aeae DJ |
6667 | } |
6668 | ||
6669 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { | |
6670 | print_exception_catchpoint, | |
6671 | print_one_exception_catchpoint, | |
6672 | print_mention_exception_catchpoint | |
6673 | }; | |
6674 | ||
6675 | static int | |
6676 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
6677 | enum exception_event_kind ex_event, int from_tty) | |
6678 | { | |
604133b5 AR |
6679 | char *trigger_func_name; |
6680 | ||
3086aeae | 6681 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 6682 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 6683 | else |
604133b5 | 6684 | trigger_func_name = "__cxa_throw"; |
3086aeae | 6685 | |
604133b5 AR |
6686 | break_command_really (trigger_func_name, cond_string, -1, |
6687 | 0 /* condition and thread are valid. */, | |
ade92717 | 6688 | tempflag, 0, |
604133b5 AR |
6689 | 0, |
6690 | AUTO_BOOLEAN_TRUE /* pending */, | |
6691 | &gnu_v3_exception_catchpoint_ops, from_tty); | |
3086aeae | 6692 | |
3086aeae DJ |
6693 | return 1; |
6694 | } | |
6695 | ||
c5aa993b | 6696 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
6697 | |
6698 | static void | |
fba45db2 KB |
6699 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
6700 | int tempflag, int from_tty) | |
c906108c | 6701 | { |
c5aa993b JM |
6702 | char *cond_string = NULL; |
6703 | struct symtab_and_line *sal = NULL; | |
6704 | ||
44feb3ce TT |
6705 | if (!arg) |
6706 | arg = ""; | |
c906108c | 6707 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6708 | |
c906108c SS |
6709 | cond_string = ep_parse_optional_if_clause (&arg); |
6710 | ||
6711 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6712 | error (_("Junk at end of arguments.")); |
c906108c SS |
6713 | |
6714 | if ((ex_event != EX_EVENT_THROW) && | |
6715 | (ex_event != EX_EVENT_CATCH)) | |
8a3fe4f8 | 6716 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 6717 | |
3086aeae DJ |
6718 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
6719 | return; | |
6720 | ||
8a3fe4f8 | 6721 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
6722 | } |
6723 | ||
44feb3ce TT |
6724 | /* Implementation of "catch catch" command. */ |
6725 | ||
6726 | static void | |
6727 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
6728 | { | |
6729 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
6730 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); | |
6731 | } | |
6732 | ||
6733 | /* Implementation of "catch throw" command. */ | |
6734 | ||
6735 | static void | |
6736 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
6737 | { | |
6738 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
6739 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); | |
6740 | } | |
6741 | ||
f7f9143b JB |
6742 | /* Create a breakpoint struct for Ada exception catchpoints. */ |
6743 | ||
6744 | static void | |
6745 | create_ada_exception_breakpoint (struct symtab_and_line sal, | |
6746 | char *addr_string, | |
6747 | char *exp_string, | |
6748 | char *cond_string, | |
6749 | struct expression *cond, | |
6750 | struct breakpoint_ops *ops, | |
6751 | int tempflag, | |
6752 | int from_tty) | |
6753 | { | |
6754 | struct breakpoint *b; | |
6755 | ||
6756 | if (from_tty) | |
6757 | { | |
6758 | describe_other_breakpoints (sal.pc, sal.section, -1); | |
6759 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special | |
6760 | version for exception catchpoints, because two catchpoints | |
6761 | used for different exception names will use the same address. | |
6762 | In this case, a "breakpoint ... also set at..." warning is | |
6763 | unproductive. Besides. the warning phrasing is also a bit | |
6764 | inapropriate, we should use the word catchpoint, and tell | |
6765 | the user what type of catchpoint it is. The above is good | |
6766 | enough for now, though. */ | |
6767 | } | |
6768 | ||
6769 | b = set_raw_breakpoint (sal, bp_breakpoint); | |
6770 | set_breakpoint_count (breakpoint_count + 1); | |
6771 | ||
6772 | b->enable_state = bp_enabled; | |
6773 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
6774 | b->number = breakpoint_count; | |
6775 | b->ignore_count = 0; | |
511a6cd4 | 6776 | b->loc->cond = cond; |
f7f9143b JB |
6777 | b->addr_string = addr_string; |
6778 | b->language = language_ada; | |
6779 | b->cond_string = cond_string; | |
6780 | b->exp_string = exp_string; | |
6781 | b->thread = -1; | |
6782 | b->ops = ops; | |
f7f9143b JB |
6783 | |
6784 | mention (b); | |
b60e7edf | 6785 | update_global_location_list (1); |
f7f9143b JB |
6786 | } |
6787 | ||
6788 | /* Implement the "catch exception" command. */ | |
6789 | ||
6790 | static void | |
44feb3ce TT |
6791 | catch_ada_exception_command (char *arg, int from_tty, |
6792 | struct cmd_list_element *command) | |
f7f9143b | 6793 | { |
44feb3ce | 6794 | int tempflag; |
f7f9143b JB |
6795 | struct symtab_and_line sal; |
6796 | enum bptype type; | |
6797 | char *addr_string = NULL; | |
6798 | char *exp_string = NULL; | |
6799 | char *cond_string = NULL; | |
6800 | struct expression *cond = NULL; | |
6801 | struct breakpoint_ops *ops = NULL; | |
6802 | ||
44feb3ce TT |
6803 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
6804 | ||
6805 | if (!arg) | |
6806 | arg = ""; | |
f7f9143b JB |
6807 | sal = ada_decode_exception_location (arg, &addr_string, &exp_string, |
6808 | &cond_string, &cond, &ops); | |
6809 | create_ada_exception_breakpoint (sal, addr_string, exp_string, | |
6810 | cond_string, cond, ops, tempflag, | |
6811 | from_tty); | |
6812 | } | |
6813 | ||
6814 | /* Implement the "catch assert" command. */ | |
6815 | ||
6816 | static void | |
44feb3ce | 6817 | catch_assert_command (char *arg, int from_tty, struct cmd_list_element *command) |
f7f9143b | 6818 | { |
44feb3ce | 6819 | int tempflag; |
f7f9143b JB |
6820 | struct symtab_and_line sal; |
6821 | char *addr_string = NULL; | |
6822 | struct breakpoint_ops *ops = NULL; | |
6823 | ||
44feb3ce TT |
6824 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
6825 | ||
6826 | if (!arg) | |
6827 | arg = ""; | |
f7f9143b JB |
6828 | sal = ada_decode_assert_location (arg, &addr_string, &ops); |
6829 | create_ada_exception_breakpoint (sal, addr_string, NULL, NULL, NULL, ops, | |
6830 | tempflag, from_tty); | |
6831 | } | |
6832 | ||
c906108c | 6833 | static void |
fba45db2 | 6834 | catch_command (char *arg, int from_tty) |
c906108c | 6835 | { |
44feb3ce | 6836 | error (_("Catch requires an event name.")); |
c906108c SS |
6837 | } |
6838 | \f | |
6839 | ||
6840 | static void | |
fba45db2 | 6841 | tcatch_command (char *arg, int from_tty) |
c906108c | 6842 | { |
44feb3ce | 6843 | error (_("Catch requires an event name.")); |
c906108c SS |
6844 | } |
6845 | ||
80f8a6eb | 6846 | /* Delete breakpoints by address or line. */ |
c906108c SS |
6847 | |
6848 | static void | |
fba45db2 | 6849 | clear_command (char *arg, int from_tty) |
c906108c | 6850 | { |
d6e956e5 VP |
6851 | struct breakpoint *b; |
6852 | VEC(breakpoint_p) *found = 0; | |
6853 | int ix; | |
c906108c SS |
6854 | int default_match; |
6855 | struct symtabs_and_lines sals; | |
6856 | struct symtab_and_line sal; | |
c906108c SS |
6857 | int i; |
6858 | ||
6859 | if (arg) | |
6860 | { | |
6861 | sals = decode_line_spec (arg, 1); | |
6862 | default_match = 0; | |
6863 | } | |
6864 | else | |
6865 | { | |
c5aa993b | 6866 | sals.sals = (struct symtab_and_line *) |
c906108c | 6867 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 6868 | make_cleanup (xfree, sals.sals); |
fe39c653 | 6869 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
6870 | sal.line = default_breakpoint_line; |
6871 | sal.symtab = default_breakpoint_symtab; | |
6872 | sal.pc = default_breakpoint_address; | |
6873 | if (sal.symtab == 0) | |
8a3fe4f8 | 6874 | error (_("No source file specified.")); |
c906108c SS |
6875 | |
6876 | sals.sals[0] = sal; | |
6877 | sals.nelts = 1; | |
6878 | ||
6879 | default_match = 1; | |
6880 | } | |
6881 | ||
ed0616c6 VP |
6882 | /* We don't call resolve_sal_pc here. That's not |
6883 | as bad as it seems, because all existing breakpoints | |
6884 | typically have both file/line and pc set. So, if | |
6885 | clear is given file/line, we can match this to existing | |
6886 | breakpoint without obtaining pc at all. | |
6887 | ||
6888 | We only support clearing given the address explicitly | |
6889 | present in breakpoint table. Say, we've set breakpoint | |
6890 | at file:line. There were several PC values for that file:line, | |
6891 | due to optimization, all in one block. | |
6892 | We've picked one PC value. If "clear" is issued with another | |
6893 | PC corresponding to the same file:line, the breakpoint won't | |
6894 | be cleared. We probably can still clear the breakpoint, but | |
6895 | since the other PC value is never presented to user, user | |
6896 | can only find it by guessing, and it does not seem important | |
6897 | to support that. */ | |
6898 | ||
c906108c | 6899 | /* For each line spec given, delete bps which correspond |
80f8a6eb MS |
6900 | to it. Do it in two passes, solely to preserve the current |
6901 | behavior that from_tty is forced true if we delete more than | |
6902 | one breakpoint. */ | |
c906108c | 6903 | |
80f8a6eb | 6904 | found = NULL; |
c906108c SS |
6905 | for (i = 0; i < sals.nelts; i++) |
6906 | { | |
6907 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
6908 | If line given (pc == 0), clear all bpts on specified line. |
6909 | If defaulting, clear all bpts on default line | |
c906108c | 6910 | or at default pc. |
c5aa993b JM |
6911 | |
6912 | defaulting sal.pc != 0 tests to do | |
6913 | ||
6914 | 0 1 pc | |
6915 | 1 1 pc _and_ line | |
6916 | 0 0 line | |
6917 | 1 0 <can't happen> */ | |
c906108c SS |
6918 | |
6919 | sal = sals.sals[i]; | |
c906108c | 6920 | |
d6e956e5 VP |
6921 | /* Find all matching breakpoints and add them to |
6922 | 'found'. */ | |
6923 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6924 | { |
0d381245 | 6925 | int match = 0; |
80f8a6eb MS |
6926 | /* Are we going to delete b? */ |
6927 | if (b->type != bp_none | |
6928 | && b->type != bp_watchpoint | |
6929 | && b->type != bp_hardware_watchpoint | |
6930 | && b->type != bp_read_watchpoint | |
0d381245 VP |
6931 | && b->type != bp_access_watchpoint) |
6932 | { | |
6933 | struct bp_location *loc = b->loc; | |
6934 | for (; loc; loc = loc->next) | |
6935 | { | |
6936 | int pc_match = sal.pc | |
6937 | && (loc->address == sal.pc) | |
6938 | && (!section_is_overlay (loc->section) | |
6939 | || loc->section == sal.section); | |
6940 | int line_match = ((default_match || (0 == sal.pc)) | |
6941 | && b->source_file != NULL | |
6942 | && sal.symtab != NULL | |
6943 | && strcmp (b->source_file, sal.symtab->filename) == 0 | |
6944 | && b->line_number == sal.line); | |
6945 | if (pc_match || line_match) | |
6946 | { | |
6947 | match = 1; | |
6948 | break; | |
6949 | } | |
6950 | } | |
6951 | } | |
6952 | ||
6953 | if (match) | |
d6e956e5 | 6954 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 6955 | } |
80f8a6eb MS |
6956 | } |
6957 | /* Now go thru the 'found' chain and delete them. */ | |
d6e956e5 | 6958 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
6959 | { |
6960 | if (arg) | |
8a3fe4f8 | 6961 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 6962 | else |
8a3fe4f8 | 6963 | error (_("No breakpoint at this line.")); |
80f8a6eb | 6964 | } |
c906108c | 6965 | |
d6e956e5 | 6966 | if (VEC_length(breakpoint_p, found) > 1) |
80f8a6eb MS |
6967 | from_tty = 1; /* Always report if deleted more than one */ |
6968 | if (from_tty) | |
a3f17187 | 6969 | { |
d6e956e5 | 6970 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
6971 | printf_unfiltered (_("Deleted breakpoint ")); |
6972 | else | |
6973 | printf_unfiltered (_("Deleted breakpoints ")); | |
6974 | } | |
80f8a6eb | 6975 | breakpoints_changed (); |
d6e956e5 VP |
6976 | |
6977 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 6978 | { |
c5aa993b | 6979 | if (from_tty) |
d6e956e5 VP |
6980 | printf_unfiltered ("%d ", b->number); |
6981 | delete_breakpoint (b); | |
c906108c | 6982 | } |
80f8a6eb MS |
6983 | if (from_tty) |
6984 | putchar_unfiltered ('\n'); | |
c906108c SS |
6985 | } |
6986 | \f | |
6987 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
6988 | all breakpoints that are marked for deletion, whether hit or not. | |
6989 | This is called after any breakpoint is hit, or after errors. */ | |
6990 | ||
6991 | void | |
fba45db2 | 6992 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
6993 | { |
6994 | struct breakpoint *b, *temp; | |
6995 | ||
6996 | for (; bs; bs = bs->next) | |
20874c92 VP |
6997 | if (bs->breakpoint_at |
6998 | && bs->breakpoint_at->owner | |
6999 | && bs->breakpoint_at->owner->disposition == disp_del | |
c906108c | 7000 | && bs->stop) |
4f8d1dc6 | 7001 | delete_breakpoint (bs->breakpoint_at->owner); |
c906108c SS |
7002 | |
7003 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7004 | { |
b5de0fa7 | 7005 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
7006 | delete_breakpoint (b); |
7007 | } | |
c906108c SS |
7008 | } |
7009 | ||
b60e7edf PA |
7010 | /* If SHOULD_INSERT is true, do not insert any breakpoint locations |
7011 | into the inferior, only remove already-inserted locations that no | |
7012 | longer should be inserted. Functions that delete a breakpoint or | |
7013 | breakpoints should pass false, so that deleting a breakpoint | |
7014 | doesn't have the side effect of inserting the locations of other | |
7015 | breakpoints that are marked not-inserted, but should_be_inserted | |
7016 | returns true on them. | |
7017 | ||
7018 | This behaviour is useful is situations close to tear-down -- e.g., | |
7019 | after an exec, while the target still has execution, but breakpoint | |
7020 | shadows of the previous executable image should *NOT* be restored | |
7021 | to the new image; or before detaching, where the target still has | |
7022 | execution and wants to delete breakpoints from GDB's lists, and all | |
7023 | breakpoints had already been removed from the inferior. */ | |
7024 | ||
0d381245 | 7025 | static void |
b60e7edf | 7026 | update_global_location_list (int should_insert) |
0d381245 | 7027 | { |
74960c60 VP |
7028 | struct breakpoint *b; |
7029 | struct bp_location **next = &bp_location_chain; | |
7030 | struct bp_location *loc; | |
7031 | struct bp_location *loc2; | |
7032 | struct gdb_exception e; | |
7033 | VEC(bp_location_p) *old_locations = NULL; | |
7034 | int ret; | |
7035 | int ix; | |
7036 | ||
7037 | /* Store old locations for future reference. */ | |
7038 | for (loc = bp_location_chain; loc; loc = loc->global_next) | |
7039 | VEC_safe_push (bp_location_p, old_locations, loc); | |
0d381245 | 7040 | |
74960c60 VP |
7041 | bp_location_chain = NULL; |
7042 | ALL_BREAKPOINTS (b) | |
0d381245 | 7043 | { |
74960c60 | 7044 | for (loc = b->loc; loc; loc = loc->next) |
0d381245 | 7045 | { |
74960c60 VP |
7046 | *next = loc; |
7047 | next = &(loc->global_next); | |
7048 | *next = NULL; | |
0d381245 | 7049 | } |
74960c60 VP |
7050 | } |
7051 | ||
7052 | /* Identify bp_location instances that are no longer present in the new | |
7053 | list, and therefore should be freed. Note that it's not necessary that | |
7054 | those locations should be removed from inferior -- if there's another | |
7055 | location at the same address (previously marked as duplicate), | |
7056 | we don't need to remove/insert the location. */ | |
7057 | for (ix = 0; VEC_iterate(bp_location_p, old_locations, ix, loc); ++ix) | |
7058 | { | |
7059 | /* Tells if 'loc' is found amoung the new locations. If not, we | |
7060 | have to free it. */ | |
7061 | int found_object = 0; | |
20874c92 VP |
7062 | /* Tells if the location should remain inserted in the target. */ |
7063 | int keep_in_target = 0; | |
7064 | int removed = 0; | |
74960c60 VP |
7065 | for (loc2 = bp_location_chain; loc2; loc2 = loc2->global_next) |
7066 | if (loc2 == loc) | |
7067 | { | |
7068 | found_object = 1; | |
7069 | break; | |
7070 | } | |
7071 | ||
7072 | /* If this location is no longer present, and inserted, look if there's | |
7073 | maybe a new location at the same address. If so, mark that one | |
7074 | inserted, and don't remove this one. This is needed so that we | |
7075 | don't have a time window where a breakpoint at certain location is not | |
7076 | inserted. */ | |
7077 | ||
7078 | if (loc->inserted) | |
0d381245 | 7079 | { |
74960c60 | 7080 | /* If the location is inserted now, we might have to remove it. */ |
74960c60 VP |
7081 | |
7082 | if (found_object && should_be_inserted (loc)) | |
7083 | { | |
7084 | /* The location is still present in the location list, and still | |
7085 | should be inserted. Don't do anything. */ | |
20874c92 | 7086 | keep_in_target = 1; |
74960c60 VP |
7087 | } |
7088 | else | |
7089 | { | |
7090 | /* The location is either no longer present, or got disabled. | |
7091 | See if there's another location at the same address, in which | |
7092 | case we don't need to remove this one from the target. */ | |
7093 | if (breakpoint_address_is_meaningful (loc->owner)) | |
7094 | for (loc2 = bp_location_chain; loc2; loc2 = loc2->global_next) | |
7095 | { | |
7096 | /* For the sake of should_insert_location. The | |
7097 | call to check_duplicates will fix up this later. */ | |
7098 | loc2->duplicate = 0; | |
7099 | if (should_be_inserted (loc2) | |
7100 | && loc2 != loc && loc2->address == loc->address) | |
7101 | { | |
7102 | loc2->inserted = 1; | |
7103 | loc2->target_info = loc->target_info; | |
20874c92 | 7104 | keep_in_target = 1; |
74960c60 VP |
7105 | break; |
7106 | } | |
7107 | } | |
7108 | } | |
7109 | ||
20874c92 VP |
7110 | if (!keep_in_target) |
7111 | { | |
7112 | if (remove_breakpoint (loc, mark_uninserted)) | |
7113 | { | |
7114 | /* This is just about all we can do. We could keep this | |
7115 | location on the global list, and try to remove it next | |
7116 | time, but there's no particular reason why we will | |
7117 | succeed next time. | |
7118 | ||
7119 | Note that at this point, loc->owner is still valid, | |
7120 | as delete_breakpoint frees the breakpoint only | |
7121 | after calling us. */ | |
7122 | printf_filtered (_("warning: Error removing breakpoint %d\n"), | |
7123 | loc->owner->number); | |
7124 | } | |
7125 | removed = 1; | |
7126 | } | |
0d381245 | 7127 | } |
74960c60 VP |
7128 | |
7129 | if (!found_object) | |
1c5cfe86 PA |
7130 | { |
7131 | if (removed && non_stop) | |
20874c92 VP |
7132 | { |
7133 | /* This location was removed from the targets. In non-stop mode, | |
7134 | a race condition is possible where we've removed a breakpoint, | |
7135 | but stop events for that breakpoint are already queued and will | |
7136 | arrive later. To suppress spurious SIGTRAPs reported to user, | |
7137 | we keep this breakpoint location for a bit, and will retire it | |
7138 | after we see 3 * thread_count events. | |
1c5cfe86 | 7139 | The theory here is that reporting of events should, |
20874c92 VP |
7140 | "on the average", be fair, so after that many event we'll see |
7141 | events from all threads that have anything of interest, and no | |
1c5cfe86 | 7142 | longer need to keep this breakpoint. This is just a |
20874c92 | 7143 | heuristic, but if it's wrong, we'll report unexpected SIGTRAP, |
1c5cfe86 | 7144 | which is usability issue, but not a correctness problem. */ |
20874c92 VP |
7145 | loc->events_till_retirement = 3 * (thread_count () + 1); |
7146 | loc->owner = NULL; | |
20874c92 | 7147 | |
1c5cfe86 PA |
7148 | VEC_safe_push (bp_location_p, moribund_locations, loc); |
7149 | } | |
7150 | else | |
7151 | free_bp_location (loc); | |
20874c92 | 7152 | } |
74960c60 | 7153 | } |
1c5cfe86 | 7154 | |
74960c60 VP |
7155 | ALL_BREAKPOINTS (b) |
7156 | { | |
7157 | check_duplicates (b); | |
0d381245 | 7158 | } |
74960c60 | 7159 | |
a12654ce PA |
7160 | if (breakpoints_always_inserted_mode () |
7161 | && should_insert | |
7162 | && target_has_execution) | |
74960c60 VP |
7163 | insert_breakpoint_locations (); |
7164 | } | |
7165 | ||
20874c92 VP |
7166 | void |
7167 | breakpoint_retire_moribund (void) | |
7168 | { | |
7169 | struct bp_location *loc; | |
7170 | int ix; | |
7171 | ||
7172 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
7173 | if (--(loc->events_till_retirement) == 0) | |
7174 | { | |
7175 | free_bp_location (loc); | |
7176 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
7177 | --ix; | |
7178 | } | |
7179 | } | |
7180 | ||
74960c60 | 7181 | static void |
b60e7edf | 7182 | update_global_location_list_nothrow (int inserting) |
74960c60 VP |
7183 | { |
7184 | struct gdb_exception e; | |
7185 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
b60e7edf | 7186 | update_global_location_list (inserting); |
0d381245 VP |
7187 | } |
7188 | ||
a474d7c2 PA |
7189 | /* Clear BPT from a BPS. */ |
7190 | static void | |
7191 | bpstat_remove_breakpoint (bpstat bps, struct breakpoint *bpt) | |
7192 | { | |
7193 | bpstat bs; | |
7194 | for (bs = bps; bs; bs = bs->next) | |
7195 | if (bs->breakpoint_at && bs->breakpoint_at->owner == bpt) | |
7196 | { | |
7197 | bs->breakpoint_at = NULL; | |
7198 | bs->old_val = NULL; | |
7199 | /* bs->commands will be freed later. */ | |
7200 | } | |
7201 | } | |
7202 | ||
7203 | /* Callback for iterate_over_threads. */ | |
7204 | static int | |
7205 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
7206 | { | |
7207 | struct breakpoint *bpt = data; | |
7208 | bpstat_remove_breakpoint (th->stop_bpstat, bpt); | |
7209 | return 0; | |
7210 | } | |
7211 | ||
53a5351d JM |
7212 | /* Delete a breakpoint and clean up all traces of it in the data |
7213 | structures. */ | |
c906108c SS |
7214 | |
7215 | void | |
fba45db2 | 7216 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 7217 | { |
52f0bd74 | 7218 | struct breakpoint *b; |
74960c60 | 7219 | struct bp_location *loc, *next; |
c906108c | 7220 | |
8a3fe4f8 | 7221 | gdb_assert (bpt != NULL); |
c906108c SS |
7222 | |
7223 | /* Has this bp already been deleted? This can happen because multiple | |
7224 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
7225 | ||
7226 | One example of this happening is a watchpoint's scope bp. When the | |
7227 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
7228 | delete it. We also delete its scope bp. But the scope bp is marked | |
7229 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
7230 | checked for auto-deleting bp's, which are deleted. | |
7231 | ||
7232 | A real solution to this problem might involve reference counts in bp's, | |
7233 | and/or giving them pointers back to their referencing bpstat's, and | |
7234 | teaching delete_breakpoint to only free a bp's storage when no more | |
1272ad14 | 7235 | references were extent. A cheaper bandaid was chosen. */ |
c906108c SS |
7236 | if (bpt->type == bp_none) |
7237 | return; | |
7238 | ||
383f836e | 7239 | observer_notify_breakpoint_deleted (bpt->number); |
c906108c | 7240 | |
c906108c SS |
7241 | if (breakpoint_chain == bpt) |
7242 | breakpoint_chain = bpt->next; | |
7243 | ||
c906108c SS |
7244 | ALL_BREAKPOINTS (b) |
7245 | if (b->next == bpt) | |
c5aa993b JM |
7246 | { |
7247 | b->next = bpt->next; | |
7248 | break; | |
7249 | } | |
c906108c | 7250 | |
c906108c | 7251 | free_command_lines (&bpt->commands); |
c906108c | 7252 | if (bpt->cond_string != NULL) |
b8c9b27d | 7253 | xfree (bpt->cond_string); |
c906108c | 7254 | if (bpt->addr_string != NULL) |
b8c9b27d | 7255 | xfree (bpt->addr_string); |
c906108c | 7256 | if (bpt->exp != NULL) |
b8c9b27d | 7257 | xfree (bpt->exp); |
c906108c | 7258 | if (bpt->exp_string != NULL) |
b8c9b27d | 7259 | xfree (bpt->exp_string); |
c906108c SS |
7260 | if (bpt->val != NULL) |
7261 | value_free (bpt->val); | |
7262 | if (bpt->source_file != NULL) | |
b8c9b27d | 7263 | xfree (bpt->source_file); |
c906108c | 7264 | if (bpt->dll_pathname != NULL) |
b8c9b27d | 7265 | xfree (bpt->dll_pathname); |
c906108c | 7266 | if (bpt->triggered_dll_pathname != NULL) |
b8c9b27d | 7267 | xfree (bpt->triggered_dll_pathname); |
c906108c | 7268 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 7269 | xfree (bpt->exec_pathname); |
c906108c SS |
7270 | |
7271 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
7272 | /* FIXME, how can we find all bpstat's? | |
198757a8 VP |
7273 | We just check stop_bpstat for now. Note that we cannot just |
7274 | remove bpstats pointing at bpt from the stop_bpstat list | |
7275 | entirely, as breakpoint commands are associated with the bpstat; | |
7276 | if we remove it here, then the later call to | |
7277 | bpstat_do_actions (&stop_bpstat); | |
7278 | in event-top.c won't do anything, and temporary breakpoints | |
7279 | with commands won't work. */ | |
a474d7c2 | 7280 | |
a474d7c2 | 7281 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); |
74960c60 VP |
7282 | |
7283 | /* Now that breakpoint is removed from breakpoint | |
7284 | list, update the global location list. This | |
7285 | will remove locations that used to belong to | |
7286 | this breakpoint. Do this before freeing | |
7287 | the breakpoint itself, since remove_breakpoint | |
7288 | looks at location's owner. It might be better | |
7289 | design to have location completely self-contained, | |
7290 | but it's not the case now. */ | |
b60e7edf | 7291 | update_global_location_list (0); |
74960c60 VP |
7292 | |
7293 | ||
c906108c SS |
7294 | /* On the chance that someone will soon try again to delete this same |
7295 | bp, we mark it as deleted before freeing its storage. */ | |
7296 | bpt->type = bp_none; | |
7297 | ||
b8c9b27d | 7298 | xfree (bpt); |
c906108c SS |
7299 | } |
7300 | ||
4d6140d9 AC |
7301 | static void |
7302 | do_delete_breakpoint_cleanup (void *b) | |
7303 | { | |
7304 | delete_breakpoint (b); | |
7305 | } | |
7306 | ||
7307 | struct cleanup * | |
7308 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
7309 | { | |
7310 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
7311 | } | |
7312 | ||
c906108c | 7313 | void |
fba45db2 | 7314 | delete_command (char *arg, int from_tty) |
c906108c SS |
7315 | { |
7316 | struct breakpoint *b, *temp; | |
7317 | ||
ea9365bb TT |
7318 | dont_repeat (); |
7319 | ||
c906108c SS |
7320 | if (arg == 0) |
7321 | { | |
7322 | int breaks_to_delete = 0; | |
7323 | ||
7324 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
7325 | Do not delete internal or call-dummy breakpoints, these |
7326 | have to be deleted with an explicit breakpoint number argument. */ | |
7327 | ALL_BREAKPOINTS (b) | |
7328 | { | |
7329 | if (b->type != bp_call_dummy && | |
7330 | b->type != bp_shlib_event && | |
c4093a6a | 7331 | b->type != bp_thread_event && |
1900040c | 7332 | b->type != bp_overlay_event && |
c5aa993b | 7333 | b->number >= 0) |
973d738b DJ |
7334 | { |
7335 | breaks_to_delete = 1; | |
7336 | break; | |
7337 | } | |
c5aa993b | 7338 | } |
c906108c SS |
7339 | |
7340 | /* Ask user only if there are some breakpoints to delete. */ | |
7341 | if (!from_tty | |
e2e0b3e5 | 7342 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 7343 | { |
c5aa993b JM |
7344 | ALL_BREAKPOINTS_SAFE (b, temp) |
7345 | { | |
7346 | if (b->type != bp_call_dummy && | |
7347 | b->type != bp_shlib_event && | |
c4093a6a | 7348 | b->type != bp_thread_event && |
1900040c | 7349 | b->type != bp_overlay_event && |
c5aa993b JM |
7350 | b->number >= 0) |
7351 | delete_breakpoint (b); | |
7352 | } | |
c906108c SS |
7353 | } |
7354 | } | |
7355 | else | |
7356 | map_breakpoint_numbers (arg, delete_breakpoint); | |
7357 | } | |
7358 | ||
0d381245 VP |
7359 | static int |
7360 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 7361 | { |
0d381245 VP |
7362 | for (; loc; loc = loc->next) |
7363 | if (!loc->shlib_disabled) | |
7364 | return 0; | |
7365 | return 1; | |
fe3f5fa8 VP |
7366 | } |
7367 | ||
776592bf DE |
7368 | /* Subroutine of update_breakpoint_locations to simplify it. |
7369 | Return non-zero if multiple fns in list LOC have the same name. | |
7370 | Null names are ignored. */ | |
7371 | ||
7372 | static int | |
7373 | ambiguous_names_p (struct bp_location *loc) | |
7374 | { | |
7375 | struct bp_location *l; | |
7376 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
7377 | (int (*) (const void *, const void *)) streq, | |
7378 | NULL, xcalloc, xfree); | |
7379 | ||
7380 | for (l = loc; l != NULL; l = l->next) | |
7381 | { | |
7382 | const char **slot; | |
7383 | const char *name = l->function_name; | |
7384 | ||
7385 | /* Allow for some names to be NULL, ignore them. */ | |
7386 | if (name == NULL) | |
7387 | continue; | |
7388 | ||
7389 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
7390 | INSERT); | |
7391 | /* NOTE: We can assume slot != NULL here because xcalloc never returns | |
7392 | NULL. */ | |
7393 | if (*slot != NULL) | |
7394 | { | |
7395 | htab_delete (htab); | |
7396 | return 1; | |
7397 | } | |
7398 | *slot = name; | |
7399 | } | |
7400 | ||
7401 | htab_delete (htab); | |
7402 | return 0; | |
7403 | } | |
7404 | ||
fe3f5fa8 | 7405 | static void |
0d381245 VP |
7406 | update_breakpoint_locations (struct breakpoint *b, |
7407 | struct symtabs_and_lines sals) | |
fe3f5fa8 VP |
7408 | { |
7409 | int i; | |
7410 | char *s; | |
0d381245 VP |
7411 | struct bp_location *existing_locations = b->loc; |
7412 | ||
7413 | /* If there's no new locations, and all existing locations | |
7414 | are pending, don't do anything. This optimizes | |
7415 | the common case where all locations are in the same | |
7416 | shared library, that was unloaded. We'd like to | |
7417 | retain the location, so that when the library | |
7418 | is loaded again, we don't loose the enabled/disabled | |
7419 | status of the individual locations. */ | |
7420 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) | |
fe3f5fa8 VP |
7421 | return; |
7422 | ||
fe3f5fa8 VP |
7423 | b->loc = NULL; |
7424 | ||
0d381245 | 7425 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 7426 | { |
0d381245 VP |
7427 | struct bp_location *new_loc = |
7428 | add_location_to_breakpoint (b, b->type, &(sals.sals[i])); | |
fe3f5fa8 | 7429 | |
0d381245 VP |
7430 | /* Reparse conditions, they might contain references to the |
7431 | old symtab. */ | |
7432 | if (b->cond_string != NULL) | |
7433 | { | |
7434 | struct gdb_exception e; | |
fe3f5fa8 | 7435 | |
0d381245 VP |
7436 | s = b->cond_string; |
7437 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
7438 | { | |
7439 | new_loc->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), | |
7440 | 0); | |
7441 | } | |
7442 | if (e.reason < 0) | |
7443 | { | |
7444 | warning (_("failed to reevaluate condition for breakpoint %d: %s"), | |
7445 | b->number, e.message); | |
7446 | new_loc->enabled = 0; | |
7447 | } | |
7448 | } | |
fe3f5fa8 | 7449 | |
0d381245 VP |
7450 | if (b->source_file != NULL) |
7451 | xfree (b->source_file); | |
7452 | if (sals.sals[i].symtab == NULL) | |
7453 | b->source_file = NULL; | |
7454 | else | |
7455 | b->source_file = | |
7456 | savestring (sals.sals[i].symtab->filename, | |
7457 | strlen (sals.sals[i].symtab->filename)); | |
fe3f5fa8 | 7458 | |
0d381245 VP |
7459 | if (b->line_number == 0) |
7460 | b->line_number = sals.sals[i].line; | |
7461 | } | |
fe3f5fa8 | 7462 | |
514f746b AR |
7463 | /* Update locations of permanent breakpoints. */ |
7464 | if (b->enable_state == bp_permanent) | |
7465 | make_breakpoint_permanent (b); | |
7466 | ||
0d381245 VP |
7467 | /* If possible, carry over 'disable' status from existing breakpoints. */ |
7468 | { | |
7469 | struct bp_location *e = existing_locations; | |
776592bf DE |
7470 | /* If there are multiple breakpoints with the same function name, |
7471 | e.g. for inline functions, comparing function names won't work. | |
7472 | Instead compare pc addresses; this is just a heuristic as things | |
7473 | may have moved, but in practice it gives the correct answer | |
7474 | often enough until a better solution is found. */ | |
7475 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
7476 | ||
0d381245 VP |
7477 | for (; e; e = e->next) |
7478 | { | |
7479 | if (!e->enabled && e->function_name) | |
7480 | { | |
7481 | struct bp_location *l = b->loc; | |
776592bf DE |
7482 | if (have_ambiguous_names) |
7483 | { | |
7484 | for (; l; l = l->next) | |
7485 | if (e->address == l->address) | |
7486 | { | |
7487 | l->enabled = 0; | |
7488 | break; | |
7489 | } | |
7490 | } | |
7491 | else | |
7492 | { | |
7493 | for (; l; l = l->next) | |
7494 | if (l->function_name | |
7495 | && strcmp (e->function_name, l->function_name) == 0) | |
7496 | { | |
7497 | l->enabled = 0; | |
7498 | break; | |
7499 | } | |
7500 | } | |
0d381245 VP |
7501 | } |
7502 | } | |
7503 | } | |
fe3f5fa8 | 7504 | |
b60e7edf | 7505 | update_global_location_list (1); |
fe3f5fa8 VP |
7506 | } |
7507 | ||
7508 | ||
c906108c SS |
7509 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
7510 | The value we return ends up being the return value from catch_errors. | |
7511 | Unused in this case. */ | |
7512 | ||
7513 | static int | |
4efb68b1 | 7514 | breakpoint_re_set_one (void *bint) |
c906108c | 7515 | { |
53a5351d JM |
7516 | /* get past catch_errs */ |
7517 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
7518 | struct value *mark; |
7519 | int i; | |
fe3f5fa8 VP |
7520 | int not_found = 0; |
7521 | int *not_found_ptr = ¬_found; | |
7522 | struct symtabs_and_lines sals = {}; | |
ed0616c6 | 7523 | struct symtabs_and_lines expanded; |
c906108c | 7524 | char *s; |
b5de0fa7 | 7525 | enum enable_state save_enable; |
fe3f5fa8 VP |
7526 | struct gdb_exception e; |
7527 | ||
c906108c SS |
7528 | |
7529 | switch (b->type) | |
7530 | { | |
7531 | case bp_none: | |
8a3fe4f8 | 7532 | warning (_("attempted to reset apparently deleted breakpoint #%d?"), |
53a5351d | 7533 | b->number); |
c906108c SS |
7534 | return 0; |
7535 | case bp_breakpoint: | |
7536 | case bp_hardware_breakpoint: | |
7537 | case bp_catch_load: | |
7538 | case bp_catch_unload: | |
7539 | if (b->addr_string == NULL) | |
7540 | { | |
7541 | /* Anything without a string can't be re-set. */ | |
7542 | delete_breakpoint (b); | |
7543 | return 0; | |
7544 | } | |
c906108c SS |
7545 | |
7546 | set_language (b->language); | |
7547 | input_radix = b->input_radix; | |
7548 | s = b->addr_string; | |
fe3f5fa8 | 7549 | TRY_CATCH (e, RETURN_MASK_ERROR) |
c906108c | 7550 | { |
fe3f5fa8 VP |
7551 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, |
7552 | not_found_ptr); | |
7553 | } | |
7554 | if (e.reason < 0) | |
7555 | { | |
7556 | int not_found_and_ok = 0; | |
7557 | /* For pending breakpoints, it's expected that parsing | |
7558 | will fail until the right shared library is loaded. | |
7559 | User has already told to create pending breakpoints and | |
7560 | don't need extra messages. If breakpoint is in bp_shlib_disabled | |
7561 | state, then user already saw the message about that breakpoint | |
7562 | being disabled, and don't want to see more errors. */ | |
0d381245 VP |
7563 | if (not_found |
7564 | && (b->condition_not_parsed | |
7565 | || (b->loc && b->loc->shlib_disabled) | |
7566 | || b->enable_state == bp_disabled)) | |
fe3f5fa8 VP |
7567 | not_found_and_ok = 1; |
7568 | ||
7569 | if (!not_found_and_ok) | |
c906108c | 7570 | { |
fe3f5fa8 VP |
7571 | /* We surely don't want to warn about the same breakpoint |
7572 | 10 times. One solution, implemented here, is disable | |
7573 | the breakpoint on error. Another solution would be to | |
7574 | have separate 'warning emitted' flag. Since this | |
7575 | happens only when a binary has changed, I don't know | |
7576 | which approach is better. */ | |
7577 | b->enable_state = bp_disabled; | |
7578 | throw_exception (e); | |
c906108c | 7579 | } |
fe3f5fa8 | 7580 | } |
c906108c | 7581 | |
fe3f5fa8 VP |
7582 | if (not_found) |
7583 | break; | |
7584 | ||
7585 | gdb_assert (sals.nelts == 1); | |
7586 | resolve_sal_pc (&sals.sals[0]); | |
0d381245 | 7587 | if (b->condition_not_parsed && s && s[0]) |
fe3f5fa8 VP |
7588 | { |
7589 | char *cond_string = 0; | |
7590 | int thread = -1; | |
7591 | find_condition_and_thread (s, sals.sals[0].pc, | |
7592 | &cond_string, &thread); | |
7593 | if (cond_string) | |
7594 | b->cond_string = cond_string; | |
7595 | b->thread = thread; | |
0d381245 | 7596 | b->condition_not_parsed = 0; |
fe3f5fa8 | 7597 | } |
ed0616c6 VP |
7598 | expanded = expand_line_sal_maybe (sals.sals[0]); |
7599 | update_breakpoint_locations (b, expanded); | |
0d381245 | 7600 | |
b8c9b27d | 7601 | xfree (sals.sals); |
c906108c SS |
7602 | break; |
7603 | ||
7604 | case bp_watchpoint: | |
7605 | case bp_hardware_watchpoint: | |
7606 | case bp_read_watchpoint: | |
7607 | case bp_access_watchpoint: | |
0b3de036 VP |
7608 | /* Watchpoint can be either on expression using entirely global variables, |
7609 | or it can be on local variables. | |
7610 | ||
7611 | Watchpoints of the first kind are never auto-deleted, and even persist | |
7612 | across program restarts. Since they can use variables from shared | |
7613 | libraries, we need to reparse expression as libraries are loaded | |
7614 | and unloaded. | |
7615 | ||
7616 | Watchpoints on local variables can also change meaning as result | |
7617 | of solib event. For example, if a watchpoint uses both a local and | |
7618 | a global variables in expression, it's a local watchpoint, but | |
7619 | unloading of a shared library will make the expression invalid. | |
7620 | This is not a very common use case, but we still re-evaluate | |
7621 | expression, to avoid surprises to the user. | |
7622 | ||
7623 | Note that for local watchpoints, we re-evaluate it only if | |
7624 | watchpoints frame id is still valid. If it's not, it means | |
7625 | the watchpoint is out of scope and will be deleted soon. In fact, | |
7626 | I'm not sure we'll ever be called in this case. | |
7627 | ||
7628 | If a local watchpoint's frame id is still valid, then | |
7629 | b->exp_valid_block is likewise valid, and we can safely use it. | |
7630 | ||
7631 | Don't do anything about disabled watchpoints, since they will | |
7632 | be reevaluated again when enabled. */ | |
a5606eee | 7633 | update_watchpoint (b, 1 /* reparse */); |
c906108c | 7634 | break; |
c5aa993b JM |
7635 | /* We needn't really do anything to reset these, since the mask |
7636 | that requests them is unaffected by e.g., new libraries being | |
7637 | loaded. */ | |
c906108c SS |
7638 | case bp_catch_fork: |
7639 | case bp_catch_vfork: | |
7640 | case bp_catch_exec: | |
7641 | break; | |
c5aa993b | 7642 | |
c906108c | 7643 | default: |
a3f17187 | 7644 | printf_filtered (_("Deleting unknown breakpoint type %d\n"), b->type); |
c906108c | 7645 | /* fall through */ |
611c83ae PA |
7646 | /* Delete overlay event breakpoints; they will be reset later by |
7647 | breakpoint_re_set. */ | |
1900040c | 7648 | case bp_overlay_event: |
c906108c SS |
7649 | delete_breakpoint (b); |
7650 | break; | |
7651 | ||
c5aa993b JM |
7652 | /* This breakpoint is special, it's set up when the inferior |
7653 | starts and we really don't want to touch it. */ | |
c906108c SS |
7654 | case bp_shlib_event: |
7655 | ||
c4093a6a JM |
7656 | /* Like bp_shlib_event, this breakpoint type is special. |
7657 | Once it is set up, we do not want to touch it. */ | |
7658 | case bp_thread_event: | |
7659 | ||
c5aa993b JM |
7660 | /* Keep temporary breakpoints, which can be encountered when we step |
7661 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7662 | Otherwise these should have been blown away via the cleanup chain | |
7663 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7664 | case bp_until: |
7665 | case bp_finish: | |
7666 | case bp_watchpoint_scope: | |
7667 | case bp_call_dummy: | |
7668 | case bp_step_resume: | |
611c83ae PA |
7669 | case bp_longjmp: |
7670 | case bp_longjmp_resume: | |
c906108c SS |
7671 | break; |
7672 | } | |
7673 | ||
7674 | return 0; | |
7675 | } | |
7676 | ||
7677 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
7678 | void | |
fba45db2 | 7679 | breakpoint_re_set (void) |
c906108c SS |
7680 | { |
7681 | struct breakpoint *b, *temp; | |
7682 | enum language save_language; | |
7683 | int save_input_radix; | |
c5aa993b | 7684 | |
c906108c SS |
7685 | save_language = current_language->la_language; |
7686 | save_input_radix = input_radix; | |
7687 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7688 | { |
53a5351d | 7689 | /* Format possible error msg */ |
fe3f5fa8 | 7690 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
7691 | b->number); |
7692 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 7693 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 7694 | do_cleanups (cleanups); |
c5aa993b | 7695 | } |
c906108c SS |
7696 | set_language (save_language); |
7697 | input_radix = save_input_radix; | |
1900040c MS |
7698 | |
7699 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
7700 | } |
7701 | \f | |
c906108c SS |
7702 | /* Reset the thread number of this breakpoint: |
7703 | ||
7704 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 7705 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 7706 | void |
fba45db2 | 7707 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
7708 | { |
7709 | if (b->thread != -1) | |
7710 | { | |
39f77062 KB |
7711 | if (in_thread_list (inferior_ptid)) |
7712 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
7713 | } |
7714 | } | |
7715 | ||
03ac34d5 MS |
7716 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7717 | If from_tty is nonzero, it prints a message to that effect, | |
7718 | which ends with a period (no newline). */ | |
7719 | ||
c906108c | 7720 | void |
fba45db2 | 7721 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 7722 | { |
52f0bd74 | 7723 | struct breakpoint *b; |
c906108c SS |
7724 | |
7725 | if (count < 0) | |
7726 | count = 0; | |
7727 | ||
7728 | ALL_BREAKPOINTS (b) | |
7729 | if (b->number == bptnum) | |
c5aa993b JM |
7730 | { |
7731 | b->ignore_count = count; | |
221ea385 KS |
7732 | if (from_tty) |
7733 | { | |
7734 | if (count == 0) | |
a3f17187 | 7735 | printf_filtered (_("Will stop next time breakpoint %d is reached."), |
221ea385 KS |
7736 | bptnum); |
7737 | else if (count == 1) | |
a3f17187 | 7738 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
7739 | bptnum); |
7740 | else | |
a3f17187 | 7741 | printf_filtered (_("Will ignore next %d crossings of breakpoint %d."), |
221ea385 KS |
7742 | count, bptnum); |
7743 | } | |
c5aa993b | 7744 | breakpoints_changed (); |
383f836e | 7745 | observer_notify_breakpoint_modified (b->number); |
c5aa993b JM |
7746 | return; |
7747 | } | |
c906108c | 7748 | |
8a3fe4f8 | 7749 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
7750 | } |
7751 | ||
c906108c SS |
7752 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
7753 | ||
7754 | static void | |
fba45db2 | 7755 | ignore_command (char *args, int from_tty) |
c906108c SS |
7756 | { |
7757 | char *p = args; | |
52f0bd74 | 7758 | int num; |
c906108c SS |
7759 | |
7760 | if (p == 0) | |
e2e0b3e5 | 7761 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 7762 | |
c906108c | 7763 | num = get_number (&p); |
5c44784c | 7764 | if (num == 0) |
8a3fe4f8 | 7765 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 7766 | if (*p == 0) |
8a3fe4f8 | 7767 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
7768 | |
7769 | set_ignore_count (num, | |
7770 | longest_to_int (value_as_long (parse_and_eval (p))), | |
7771 | from_tty); | |
221ea385 KS |
7772 | if (from_tty) |
7773 | printf_filtered ("\n"); | |
c906108c SS |
7774 | } |
7775 | \f | |
7776 | /* Call FUNCTION on each of the breakpoints | |
7777 | whose numbers are given in ARGS. */ | |
7778 | ||
7779 | static void | |
831662b3 | 7780 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) |
c906108c | 7781 | { |
52f0bd74 | 7782 | char *p = args; |
c906108c | 7783 | char *p1; |
52f0bd74 AC |
7784 | int num; |
7785 | struct breakpoint *b, *tmp; | |
11cf8741 | 7786 | int match; |
c906108c SS |
7787 | |
7788 | if (p == 0) | |
e2e0b3e5 | 7789 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c SS |
7790 | |
7791 | while (*p) | |
7792 | { | |
11cf8741 | 7793 | match = 0; |
c906108c | 7794 | p1 = p; |
c5aa993b | 7795 | |
5c44784c JM |
7796 | num = get_number_or_range (&p1); |
7797 | if (num == 0) | |
c5aa993b | 7798 | { |
8a3fe4f8 | 7799 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
7800 | } |
7801 | else | |
7802 | { | |
7803 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
7804 | if (b->number == num) | |
7805 | { | |
7806 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 7807 | match = 1; |
5c44784c JM |
7808 | function (b); |
7809 | if (related_breakpoint) | |
7810 | function (related_breakpoint); | |
11cf8741 | 7811 | break; |
5c44784c | 7812 | } |
11cf8741 | 7813 | if (match == 0) |
a3f17187 | 7814 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 7815 | } |
c906108c SS |
7816 | p = p1; |
7817 | } | |
7818 | } | |
7819 | ||
0d381245 VP |
7820 | static struct bp_location * |
7821 | find_location_by_number (char *number) | |
7822 | { | |
7823 | char *dot = strchr (number, '.'); | |
7824 | char *p1; | |
7825 | int bp_num; | |
7826 | int loc_num; | |
7827 | struct breakpoint *b; | |
7828 | struct bp_location *loc; | |
7829 | ||
7830 | *dot = '\0'; | |
7831 | ||
7832 | p1 = number; | |
7833 | bp_num = get_number_or_range (&p1); | |
7834 | if (bp_num == 0) | |
7835 | error (_("Bad breakpoint number '%s'"), number); | |
7836 | ||
7837 | ALL_BREAKPOINTS (b) | |
7838 | if (b->number == bp_num) | |
7839 | { | |
7840 | break; | |
7841 | } | |
7842 | ||
7843 | if (!b || b->number != bp_num) | |
7844 | error (_("Bad breakpoint number '%s'"), number); | |
7845 | ||
7846 | p1 = dot+1; | |
7847 | loc_num = get_number_or_range (&p1); | |
7848 | if (loc_num == 0) | |
7849 | error (_("Bad breakpoint location number '%s'"), number); | |
7850 | ||
7851 | --loc_num; | |
7852 | loc = b->loc; | |
7853 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
7854 | ; | |
7855 | if (!loc) | |
7856 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
7857 | ||
7858 | return loc; | |
7859 | } | |
7860 | ||
7861 | ||
1900040c MS |
7862 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7863 | If from_tty is nonzero, it prints a message to that effect, | |
7864 | which ends with a period (no newline). */ | |
7865 | ||
c906108c | 7866 | void |
fba45db2 | 7867 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7868 | { |
7869 | /* Never disable a watchpoint scope breakpoint; we want to | |
7870 | hit them when we leave scope so we can delete both the | |
7871 | watchpoint and its scope breakpoint at that time. */ | |
7872 | if (bpt->type == bp_watchpoint_scope) | |
7873 | return; | |
7874 | ||
c2c6d25f | 7875 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 7876 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
7877 | return; |
7878 | ||
b5de0fa7 | 7879 | bpt->enable_state = bp_disabled; |
c906108c | 7880 | |
b60e7edf | 7881 | update_global_location_list (0); |
c906108c | 7882 | |
383f836e | 7883 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
7884 | } |
7885 | ||
c906108c | 7886 | static void |
fba45db2 | 7887 | disable_command (char *args, int from_tty) |
c906108c | 7888 | { |
52f0bd74 | 7889 | struct breakpoint *bpt; |
c906108c SS |
7890 | if (args == 0) |
7891 | ALL_BREAKPOINTS (bpt) | |
7892 | switch (bpt->type) | |
c5aa993b JM |
7893 | { |
7894 | case bp_none: | |
8a3fe4f8 | 7895 | warning (_("attempted to disable apparently deleted breakpoint #%d?"), |
53a5351d | 7896 | bpt->number); |
c5aa993b JM |
7897 | continue; |
7898 | case bp_breakpoint: | |
7899 | case bp_catch_load: | |
7900 | case bp_catch_unload: | |
7901 | case bp_catch_fork: | |
7902 | case bp_catch_vfork: | |
7903 | case bp_catch_exec: | |
c5aa993b JM |
7904 | case bp_hardware_breakpoint: |
7905 | case bp_watchpoint: | |
7906 | case bp_hardware_watchpoint: | |
7907 | case bp_read_watchpoint: | |
7908 | case bp_access_watchpoint: | |
7909 | disable_breakpoint (bpt); | |
7910 | default: | |
7911 | continue; | |
7912 | } | |
0d381245 VP |
7913 | else if (strchr (args, '.')) |
7914 | { | |
7915 | struct bp_location *loc = find_location_by_number (args); | |
7916 | if (loc) | |
7917 | loc->enabled = 0; | |
b60e7edf | 7918 | update_global_location_list (0); |
0d381245 | 7919 | } |
c906108c SS |
7920 | else |
7921 | map_breakpoint_numbers (args, disable_breakpoint); | |
7922 | } | |
7923 | ||
7924 | static void | |
fba45db2 | 7925 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 7926 | { |
c906108c SS |
7927 | int target_resources_ok, other_type_used; |
7928 | struct value *mark; | |
7929 | ||
7930 | if (bpt->type == bp_hardware_breakpoint) | |
7931 | { | |
7932 | int i; | |
c5aa993b | 7933 | i = hw_breakpoint_used_count (); |
53a5351d JM |
7934 | target_resources_ok = |
7935 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
7936 | i + 1, 0); | |
c906108c | 7937 | if (target_resources_ok == 0) |
8a3fe4f8 | 7938 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 7939 | else if (target_resources_ok < 0) |
8a3fe4f8 | 7940 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
7941 | } |
7942 | ||
fe3f5fa8 VP |
7943 | if (bpt->type == bp_watchpoint || |
7944 | bpt->type == bp_hardware_watchpoint || | |
7945 | bpt->type == bp_read_watchpoint || | |
7946 | bpt->type == bp_access_watchpoint) | |
c906108c | 7947 | { |
fe3f5fa8 VP |
7948 | struct frame_id saved_frame_id; |
7949 | ||
7950 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
7951 | if (bpt->exp_valid_block != NULL) | |
c906108c | 7952 | { |
fe3f5fa8 VP |
7953 | struct frame_info *fr = |
7954 | fr = frame_find_by_id (bpt->watchpoint_frame); | |
7955 | if (fr == NULL) | |
c906108c | 7956 | { |
fe3f5fa8 VP |
7957 | printf_filtered (_("\ |
7958 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
7959 | is valid is not currently in scope.\n"), bpt->number); | |
c906108c SS |
7960 | return; |
7961 | } | |
fe3f5fa8 | 7962 | select_frame (fr); |
c906108c | 7963 | } |
0101ce28 | 7964 | |
b4c291bb KH |
7965 | if (bpt->val) |
7966 | value_free (bpt->val); | |
fe3f5fa8 | 7967 | mark = value_mark (); |
fa4727a6 DJ |
7968 | fetch_watchpoint_value (bpt->exp, &bpt->val, NULL, NULL); |
7969 | if (bpt->val) | |
7970 | release_value (bpt->val); | |
7971 | bpt->val_valid = 1; | |
7972 | ||
fe3f5fa8 VP |
7973 | if (bpt->type == bp_hardware_watchpoint || |
7974 | bpt->type == bp_read_watchpoint || | |
c5aa993b JM |
7975 | bpt->type == bp_access_watchpoint) |
7976 | { | |
fe3f5fa8 VP |
7977 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); |
7978 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); | |
0101ce28 | 7979 | |
fe3f5fa8 VP |
7980 | /* Hack around 'unused var' error for some targets here */ |
7981 | (void) mem_cnt, (void) i; | |
7982 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
7983 | bpt->type, i + mem_cnt, other_type_used); | |
7984 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
7985 | bp_watchpoint in the following condition */ | |
7986 | if (target_resources_ok < 0) | |
c5aa993b | 7987 | { |
fe3f5fa8 | 7988 | printf_filtered (_("\ |
c906108c | 7989 | Cannot enable watchpoint %d because target watch resources\n\ |
a3f17187 | 7990 | have been allocated for other watchpoints.\n"), bpt->number); |
fe3f5fa8 VP |
7991 | value_free_to_mark (mark); |
7992 | return; | |
c5aa993b JM |
7993 | } |
7994 | } | |
fe3f5fa8 VP |
7995 | |
7996 | select_frame (frame_find_by_id (saved_frame_id)); | |
7997 | value_free_to_mark (mark); | |
c906108c | 7998 | } |
0101ce28 | 7999 | |
b4c291bb KH |
8000 | if (bpt->enable_state != bp_permanent) |
8001 | bpt->enable_state = bp_enabled; | |
8002 | bpt->disposition = disposition; | |
b60e7edf | 8003 | update_global_location_list (1); |
b4c291bb KH |
8004 | breakpoints_changed (); |
8005 | ||
383f836e | 8006 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
8007 | } |
8008 | ||
fe3f5fa8 | 8009 | |
c906108c | 8010 | void |
fba45db2 | 8011 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
8012 | { |
8013 | do_enable_breakpoint (bpt, bpt->disposition); | |
8014 | } | |
8015 | ||
8016 | /* The enable command enables the specified breakpoints (or all defined | |
8017 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 8018 | in stopping the inferior. */ |
c906108c | 8019 | |
c906108c | 8020 | static void |
fba45db2 | 8021 | enable_command (char *args, int from_tty) |
c906108c | 8022 | { |
52f0bd74 | 8023 | struct breakpoint *bpt; |
c906108c SS |
8024 | if (args == 0) |
8025 | ALL_BREAKPOINTS (bpt) | |
8026 | switch (bpt->type) | |
c5aa993b JM |
8027 | { |
8028 | case bp_none: | |
8a3fe4f8 | 8029 | warning (_("attempted to enable apparently deleted breakpoint #%d?"), |
53a5351d | 8030 | bpt->number); |
c5aa993b JM |
8031 | continue; |
8032 | case bp_breakpoint: | |
8033 | case bp_catch_load: | |
8034 | case bp_catch_unload: | |
8035 | case bp_catch_fork: | |
8036 | case bp_catch_vfork: | |
8037 | case bp_catch_exec: | |
c5aa993b JM |
8038 | case bp_hardware_breakpoint: |
8039 | case bp_watchpoint: | |
8040 | case bp_hardware_watchpoint: | |
8041 | case bp_read_watchpoint: | |
8042 | case bp_access_watchpoint: | |
8043 | enable_breakpoint (bpt); | |
8044 | default: | |
8045 | continue; | |
8046 | } | |
0d381245 VP |
8047 | else if (strchr (args, '.')) |
8048 | { | |
8049 | struct bp_location *loc = find_location_by_number (args); | |
8050 | if (loc) | |
8051 | loc->enabled = 1; | |
b60e7edf | 8052 | update_global_location_list (1); |
0d381245 | 8053 | } |
c906108c SS |
8054 | else |
8055 | map_breakpoint_numbers (args, enable_breakpoint); | |
8056 | } | |
8057 | ||
8058 | static void | |
fba45db2 | 8059 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c | 8060 | { |
b5de0fa7 | 8061 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
8062 | } |
8063 | ||
c906108c | 8064 | static void |
fba45db2 | 8065 | enable_once_command (char *args, int from_tty) |
c906108c SS |
8066 | { |
8067 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
8068 | } | |
8069 | ||
8070 | static void | |
fba45db2 | 8071 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c | 8072 | { |
b5de0fa7 | 8073 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
8074 | } |
8075 | ||
c906108c | 8076 | static void |
fba45db2 | 8077 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
8078 | { |
8079 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
8080 | } | |
8081 | \f | |
fa8d40ab JJ |
8082 | static void |
8083 | set_breakpoint_cmd (char *args, int from_tty) | |
8084 | { | |
8085 | } | |
8086 | ||
8087 | static void | |
8088 | show_breakpoint_cmd (char *args, int from_tty) | |
8089 | { | |
8090 | } | |
8091 | ||
c906108c SS |
8092 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
8093 | ||
8094 | struct symtabs_and_lines | |
fba45db2 | 8095 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
8096 | { |
8097 | struct symtabs_and_lines sals; | |
8098 | if (string == 0) | |
8a3fe4f8 | 8099 | error (_("Empty line specification.")); |
c906108c SS |
8100 | if (default_breakpoint_valid) |
8101 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
8102 | default_breakpoint_symtab, |
8103 | default_breakpoint_line, | |
68219205 | 8104 | (char ***) NULL, NULL); |
c906108c SS |
8105 | else |
8106 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 8107 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c | 8108 | if (*string) |
8a3fe4f8 | 8109 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
8110 | return sals; |
8111 | } | |
8181d85f DJ |
8112 | |
8113 | /* Create and insert a raw software breakpoint at PC. Return an | |
8114 | identifier, which should be used to remove the breakpoint later. | |
8115 | In general, places which call this should be using something on the | |
8116 | breakpoint chain instead; this function should be eliminated | |
8117 | someday. */ | |
8118 | ||
8119 | void * | |
8120 | deprecated_insert_raw_breakpoint (CORE_ADDR pc) | |
8121 | { | |
8122 | struct bp_target_info *bp_tgt; | |
8123 | ||
8124 | bp_tgt = xmalloc (sizeof (struct bp_target_info)); | |
8125 | memset (bp_tgt, 0, sizeof (struct bp_target_info)); | |
8126 | ||
8127 | bp_tgt->placed_address = pc; | |
8128 | if (target_insert_breakpoint (bp_tgt) != 0) | |
8129 | { | |
8130 | /* Could not insert the breakpoint. */ | |
8131 | xfree (bp_tgt); | |
8132 | return NULL; | |
8133 | } | |
8134 | ||
8135 | return bp_tgt; | |
8136 | } | |
8137 | ||
8138 | /* Remove a breakpoint BP inserted by deprecated_insert_raw_breakpoint. */ | |
8139 | ||
8140 | int | |
8141 | deprecated_remove_raw_breakpoint (void *bp) | |
8142 | { | |
8143 | struct bp_target_info *bp_tgt = bp; | |
8144 | int ret; | |
8145 | ||
8146 | ret = target_remove_breakpoint (bp_tgt); | |
8147 | xfree (bp_tgt); | |
8148 | ||
8149 | return ret; | |
8150 | } | |
8151 | ||
8152 | /* One (or perhaps two) breakpoints used for software single stepping. */ | |
8153 | ||
8154 | static void *single_step_breakpoints[2]; | |
8155 | ||
8156 | /* Create and insert a breakpoint for software single step. */ | |
8157 | ||
8158 | void | |
8159 | insert_single_step_breakpoint (CORE_ADDR next_pc) | |
8160 | { | |
8161 | void **bpt_p; | |
8162 | ||
8163 | if (single_step_breakpoints[0] == NULL) | |
8164 | bpt_p = &single_step_breakpoints[0]; | |
8165 | else | |
8166 | { | |
8167 | gdb_assert (single_step_breakpoints[1] == NULL); | |
8168 | bpt_p = &single_step_breakpoints[1]; | |
8169 | } | |
8170 | ||
8171 | /* NOTE drow/2006-04-11: A future improvement to this function would be | |
8172 | to only create the breakpoints once, and actually put them on the | |
8173 | breakpoint chain. That would let us use set_raw_breakpoint. We could | |
8174 | adjust the addresses each time they were needed. Doing this requires | |
8175 | corresponding changes elsewhere where single step breakpoints are | |
8176 | handled, however. So, for now, we use this. */ | |
8177 | ||
8178 | *bpt_p = deprecated_insert_raw_breakpoint (next_pc); | |
8179 | if (*bpt_p == NULL) | |
1893a4c0 | 8180 | error (_("Could not insert single-step breakpoint at 0x%s"), |
8181d85f DJ |
8181 | paddr_nz (next_pc)); |
8182 | } | |
8183 | ||
8184 | /* Remove and delete any breakpoints used for software single step. */ | |
8185 | ||
8186 | void | |
8187 | remove_single_step_breakpoints (void) | |
8188 | { | |
8189 | gdb_assert (single_step_breakpoints[0] != NULL); | |
8190 | ||
8191 | /* See insert_single_step_breakpoint for more about this deprecated | |
8192 | call. */ | |
8193 | deprecated_remove_raw_breakpoint (single_step_breakpoints[0]); | |
8194 | single_step_breakpoints[0] = NULL; | |
8195 | ||
8196 | if (single_step_breakpoints[1] != NULL) | |
8197 | { | |
8198 | deprecated_remove_raw_breakpoint (single_step_breakpoints[1]); | |
8199 | single_step_breakpoints[1] = NULL; | |
8200 | } | |
8201 | } | |
8202 | ||
1aafd4da UW |
8203 | /* Check whether a software single-step breakpoint is inserted at PC. */ |
8204 | ||
8205 | static int | |
8206 | single_step_breakpoint_inserted_here_p (CORE_ADDR pc) | |
8207 | { | |
8208 | int i; | |
8209 | ||
8210 | for (i = 0; i < 2; i++) | |
8211 | { | |
8212 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
8213 | if (bp_tgt && bp_tgt->placed_address == pc) | |
8214 | return 1; | |
8215 | } | |
8216 | ||
8217 | return 0; | |
8218 | } | |
8219 | ||
c906108c | 8220 | \f |
31e2b00f AS |
8221 | /* This help string is used for the break, hbreak, tbreak and thbreak commands. |
8222 | It is defined as a macro to prevent duplication. | |
8223 | COMMAND should be a string constant containing the name of the command. */ | |
8224 | #define BREAK_ARGS_HELP(command) \ | |
8225 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
8226 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
8227 | If a line number is specified, break at start of code for that line.\n\ | |
8228 | If a function is specified, break at start of code for that function.\n\ | |
8229 | If an address is specified, break at that exact address.\n\ | |
8230 | With no LOCATION, uses current execution address of selected stack frame.\n\ | |
8231 | This is useful for breaking on return to a stack frame.\n\ | |
8232 | \n\ | |
8233 | THREADNUM is the number from \"info threads\".\n\ | |
8234 | CONDITION is a boolean expression.\n\ | |
8235 | \n\ | |
8236 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
8237 | \n\ | |
8238 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
8239 | ||
44feb3ce TT |
8240 | /* List of subcommands for "catch". */ |
8241 | static struct cmd_list_element *catch_cmdlist; | |
8242 | ||
8243 | /* List of subcommands for "tcatch". */ | |
8244 | static struct cmd_list_element *tcatch_cmdlist; | |
8245 | ||
8246 | /* Like add_cmd, but add the command to both the "catch" and "tcatch" | |
8247 | lists, and pass some additional user data to the command function. */ | |
8248 | static void | |
8249 | add_catch_command (char *name, char *docstring, | |
8250 | void (*sfunc) (char *args, int from_tty, | |
8251 | struct cmd_list_element *command), | |
8252 | void *user_data_catch, | |
8253 | void *user_data_tcatch) | |
8254 | { | |
8255 | struct cmd_list_element *command; | |
8256 | ||
8257 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
8258 | &catch_cmdlist); | |
8259 | set_cmd_sfunc (command, sfunc); | |
8260 | set_cmd_context (command, user_data_catch); | |
8261 | ||
8262 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
8263 | &tcatch_cmdlist); | |
8264 | set_cmd_sfunc (command, sfunc); | |
8265 | set_cmd_context (command, user_data_tcatch); | |
8266 | } | |
8267 | ||
c906108c | 8268 | void |
fba45db2 | 8269 | _initialize_breakpoint (void) |
c906108c | 8270 | { |
fa8d40ab JJ |
8271 | static struct cmd_list_element *breakpoint_set_cmdlist; |
8272 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
c906108c SS |
8273 | struct cmd_list_element *c; |
8274 | ||
84acb35a | 8275 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
84acb35a | 8276 | |
c906108c SS |
8277 | breakpoint_chain = 0; |
8278 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
8279 | before a breakpoint is set. */ | |
8280 | breakpoint_count = 0; | |
8281 | ||
1bedd215 AC |
8282 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
8283 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
8284 | Usage is `ignore N COUNT'.")); | |
c906108c | 8285 | if (xdb_commands) |
c5aa993b | 8286 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 8287 | |
1bedd215 AC |
8288 | add_com ("commands", class_breakpoint, commands_command, _("\ |
8289 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
8290 | Give breakpoint number as argument after \"commands\".\n\ |
8291 | With no argument, the targeted breakpoint is the last one set.\n\ | |
8292 | The commands themselves follow starting on the next line.\n\ | |
8293 | Type a line containing \"end\" to indicate the end of them.\n\ | |
8294 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 8295 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 8296 | |
1bedd215 AC |
8297 | add_com ("condition", class_breakpoint, condition_command, _("\ |
8298 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 8299 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 8300 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 8301 | |
1bedd215 | 8302 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 8303 | Set a temporary breakpoint.\n\ |
c906108c SS |
8304 | Like \"break\" except the breakpoint is only temporary,\n\ |
8305 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
8306 | by using \"enable delete\" on the breakpoint number.\n\ |
8307 | \n" | |
8308 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 8309 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 8310 | |
1bedd215 | 8311 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
31e2b00f | 8312 | Set a hardware assisted breakpoint.\n\ |
c906108c | 8313 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
8314 | some target hardware may not have this support.\n\ |
8315 | \n" | |
8316 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 8317 | set_cmd_completer (c, location_completer); |
c906108c | 8318 | |
1bedd215 | 8319 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 8320 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 8321 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
8322 | so it will be deleted when hit.\n\ |
8323 | \n" | |
8324 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 8325 | set_cmd_completer (c, location_completer); |
c906108c | 8326 | |
1bedd215 AC |
8327 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
8328 | Enable some breakpoints.\n\ | |
c906108c SS |
8329 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8330 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8331 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8332 | With a subcommand you can enable temporarily."), |
c906108c SS |
8333 | &enablelist, "enable ", 1, &cmdlist); |
8334 | if (xdb_commands) | |
1bedd215 AC |
8335 | add_com ("ab", class_breakpoint, enable_command, _("\ |
8336 | Enable some breakpoints.\n\ | |
c906108c SS |
8337 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8338 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8339 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8340 | With a subcommand you can enable temporarily.")); |
c906108c SS |
8341 | |
8342 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
8343 | ||
1bedd215 AC |
8344 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
8345 | Enable some breakpoints.\n\ | |
c906108c SS |
8346 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8347 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8348 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 8349 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 8350 | |
1a966eab AC |
8351 | add_cmd ("once", no_class, enable_once_command, _("\ |
8352 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8353 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8354 | &enablebreaklist); |
8355 | ||
1a966eab AC |
8356 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8357 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8358 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8359 | &enablebreaklist); |
8360 | ||
1a966eab AC |
8361 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8362 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8363 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8364 | &enablelist); |
8365 | ||
1a966eab AC |
8366 | add_cmd ("once", no_class, enable_once_command, _("\ |
8367 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8368 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8369 | &enablelist); |
8370 | ||
1bedd215 AC |
8371 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
8372 | Disable some breakpoints.\n\ | |
c906108c SS |
8373 | Arguments are breakpoint numbers with spaces in between.\n\ |
8374 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 8375 | A disabled breakpoint is not forgotten, but has no effect until reenabled."), |
c906108c SS |
8376 | &disablelist, "disable ", 1, &cmdlist); |
8377 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
8378 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
8379 | if (xdb_commands) | |
1bedd215 AC |
8380 | add_com ("sb", class_breakpoint, disable_command, _("\ |
8381 | Disable some breakpoints.\n\ | |
c906108c SS |
8382 | Arguments are breakpoint numbers with spaces in between.\n\ |
8383 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 8384 | A disabled breakpoint is not forgotten, but has no effect until reenabled.")); |
c906108c | 8385 | |
1a966eab AC |
8386 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
8387 | Disable some breakpoints.\n\ | |
c906108c SS |
8388 | Arguments are breakpoint numbers with spaces in between.\n\ |
8389 | To disable all breakpoints, give no argument.\n\ | |
8390 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
1a966eab | 8391 | This command may be abbreviated \"disable\"."), |
c906108c SS |
8392 | &disablelist); |
8393 | ||
1bedd215 AC |
8394 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
8395 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
8396 | Arguments are breakpoint numbers with spaces in between.\n\ |
8397 | To delete all breakpoints, give no argument.\n\ | |
8398 | \n\ | |
8399 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 8400 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
8401 | &deletelist, "delete ", 1, &cmdlist); |
8402 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 8403 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 8404 | if (xdb_commands) |
1bedd215 AC |
8405 | add_com ("db", class_breakpoint, delete_command, _("\ |
8406 | Delete some breakpoints.\n\ | |
c906108c | 8407 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 8408 | To delete all breakpoints, give no argument.\n")); |
c906108c | 8409 | |
1a966eab AC |
8410 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
8411 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
8412 | Arguments are breakpoint numbers with spaces in between.\n\ |
8413 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 8414 | This command may be abbreviated \"delete\"."), |
c906108c SS |
8415 | &deletelist); |
8416 | ||
1bedd215 AC |
8417 | add_com ("clear", class_breakpoint, clear_command, _("\ |
8418 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
8419 | Argument may be line number, function name, or \"*\" and an address.\n\ |
8420 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
8421 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
8422 | If an address is specified, breakpoints at that address are cleared.\n\ |
8423 | \n\ | |
8424 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
8425 | is executing in.\n\ |
8426 | \n\ | |
1bedd215 | 8427 | See also the \"delete\" command which clears breakpoints by number.")); |
c906108c | 8428 | |
1bedd215 | 8429 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
8430 | Set breakpoint at specified line or function.\n" |
8431 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 8432 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 8433 | |
c906108c SS |
8434 | add_com_alias ("b", "break", class_run, 1); |
8435 | add_com_alias ("br", "break", class_run, 1); | |
8436 | add_com_alias ("bre", "break", class_run, 1); | |
8437 | add_com_alias ("brea", "break", class_run, 1); | |
8438 | ||
502fd408 | 8439 | if (xdb_commands) |
c906108c SS |
8440 | { |
8441 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
8442 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
c906108c SS |
8443 | } |
8444 | ||
8445 | if (dbx_commands) | |
8446 | { | |
1bedd215 AC |
8447 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
8448 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
8449 | &stoplist, "stop ", 1, &cmdlist); |
8450 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 8451 | _("Break in function or address."), &stoplist); |
c5aa993b | 8452 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 8453 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
8454 | add_com ("status", class_info, breakpoints_info, _("\ |
8455 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8456 | The \"Type\" column indicates one of:\n\ |
8457 | \tbreakpoint - normal breakpoint\n\ | |
8458 | \twatchpoint - watchpoint\n\ | |
8459 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8460 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8461 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8462 | address and file/line number respectively.\n\ |
8463 | \n\ | |
8464 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8465 | are set to the address of the last breakpoint listed unless the command\n\ |
8466 | is prefixed with \"server \".\n\n\ | |
c906108c | 8467 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8468 | breakpoint set.")); |
c906108c SS |
8469 | } |
8470 | ||
1bedd215 AC |
8471 | add_info ("breakpoints", breakpoints_info, _("\ |
8472 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8473 | The \"Type\" column indicates one of:\n\ |
8474 | \tbreakpoint - normal breakpoint\n\ | |
8475 | \twatchpoint - watchpoint\n\ | |
8476 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8477 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8478 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8479 | address and file/line number respectively.\n\ |
8480 | \n\ | |
8481 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8482 | are set to the address of the last breakpoint listed unless the command\n\ |
8483 | is prefixed with \"server \".\n\n\ | |
c906108c | 8484 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8485 | breakpoint set.")); |
c906108c SS |
8486 | |
8487 | if (xdb_commands) | |
1bedd215 AC |
8488 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
8489 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8490 | The \"Type\" column indicates one of:\n\ |
8491 | \tbreakpoint - normal breakpoint\n\ | |
8492 | \twatchpoint - watchpoint\n\ | |
8493 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8494 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8495 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8496 | address and file/line number respectively.\n\ |
8497 | \n\ | |
8498 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8499 | are set to the address of the last breakpoint listed unless the command\n\ |
8500 | is prefixed with \"server \".\n\n\ | |
c906108c | 8501 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8502 | breakpoint set.")); |
c906108c | 8503 | |
1a966eab AC |
8504 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
8505 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8506 | The \"Type\" column indicates one of:\n\ |
8507 | \tbreakpoint - normal breakpoint\n\ | |
8508 | \twatchpoint - watchpoint\n\ | |
8509 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
8510 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
8511 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
8512 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
8513 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
8514 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
8515 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
8516 | address and file/line number respectively.\n\ |
8517 | \n\ | |
8518 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8519 | are set to the address of the last breakpoint listed unless the command\n\ |
8520 | is prefixed with \"server \".\n\n\ | |
c906108c | 8521 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 8522 | breakpoint set."), |
c906108c SS |
8523 | &maintenanceinfolist); |
8524 | ||
44feb3ce TT |
8525 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
8526 | Set catchpoints to catch events."), | |
8527 | &catch_cmdlist, "catch ", | |
8528 | 0/*allow-unknown*/, &cmdlist); | |
8529 | ||
8530 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
8531 | Set temporary catchpoints to catch events."), | |
8532 | &tcatch_cmdlist, "tcatch ", | |
8533 | 0/*allow-unknown*/, &cmdlist); | |
8534 | ||
8535 | /* Add catch and tcatch sub-commands. */ | |
8536 | add_catch_command ("catch", _("\ | |
8537 | Catch an exception, when caught.\n\ | |
8538 | With an argument, catch only exceptions with the given name."), | |
8539 | catch_catch_command, | |
8540 | CATCH_PERMANENT, | |
8541 | CATCH_TEMPORARY); | |
8542 | add_catch_command ("throw", _("\ | |
8543 | Catch an exception, when thrown.\n\ | |
8544 | With an argument, catch only exceptions with the given name."), | |
8545 | catch_throw_command, | |
8546 | CATCH_PERMANENT, | |
8547 | CATCH_TEMPORARY); | |
8548 | add_catch_command ("fork", _("Catch calls to fork."), | |
8549 | catch_fork_command_1, | |
8550 | (void *) (uintptr_t) catch_fork_permanent, | |
8551 | (void *) (uintptr_t) catch_fork_temporary); | |
8552 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
8553 | catch_fork_command_1, | |
8554 | (void *) (uintptr_t) catch_vfork_permanent, | |
8555 | (void *) (uintptr_t) catch_vfork_temporary); | |
8556 | add_catch_command ("exec", _("Catch calls to exec."), | |
8557 | catch_exec_command_1, | |
8558 | CATCH_PERMANENT, | |
8559 | CATCH_TEMPORARY); | |
8560 | add_catch_command ("load", _("\ | |
8561 | Catch library loads.\n\ | |
8562 | With an argument, catch only loads of that library."), | |
8563 | catch_load_command_1, | |
8564 | CATCH_PERMANENT, | |
8565 | CATCH_TEMPORARY); | |
8566 | add_catch_command ("unload", _("\ | |
8567 | Catch library unloads.\n\ | |
8568 | With an argument, catch only unloads of that library."), | |
8569 | catch_unload_command_1, | |
8570 | CATCH_PERMANENT, | |
8571 | CATCH_TEMPORARY); | |
8572 | add_catch_command ("exception", _("\ | |
8573 | Catch Ada exceptions, when raised.\n\ | |
8574 | With an argument, catch only exceptions with the given name."), | |
8575 | catch_ada_exception_command, | |
8576 | CATCH_PERMANENT, | |
8577 | CATCH_TEMPORARY); | |
8578 | add_catch_command ("assert", _("\ | |
8579 | Catch failed Ada assertions, when raised.\n\ | |
8580 | With an argument, catch only exceptions with the given name."), | |
8581 | catch_assert_command, | |
8582 | CATCH_PERMANENT, | |
8583 | CATCH_TEMPORARY); | |
c5aa993b | 8584 | |
1bedd215 AC |
8585 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
8586 | Set a watchpoint for an expression.\n\ | |
c906108c | 8587 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8588 | an expression changes.")); |
65d12d83 | 8589 | set_cmd_completer (c, expression_completer); |
c906108c | 8590 | |
1bedd215 AC |
8591 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
8592 | Set a read watchpoint for an expression.\n\ | |
c906108c | 8593 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8594 | an expression is read.")); |
65d12d83 | 8595 | set_cmd_completer (c, expression_completer); |
c906108c | 8596 | |
1bedd215 AC |
8597 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
8598 | Set a watchpoint for an expression.\n\ | |
c906108c | 8599 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8600 | an expression is either read or written.")); |
65d12d83 | 8601 | set_cmd_completer (c, expression_completer); |
c906108c SS |
8602 | |
8603 | add_info ("watchpoints", breakpoints_info, | |
1bedd215 | 8604 | _("Synonym for ``info breakpoints''.")); |
c906108c SS |
8605 | |
8606 | ||
920d2a44 AC |
8607 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
8608 | respond to changes - contrary to the description. */ | |
85c07804 AC |
8609 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
8610 | &can_use_hw_watchpoints, _("\ | |
8611 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
8612 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
8613 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
8614 | such is available. (However, any hardware watchpoints that were\n\ | |
8615 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
8616 | hardware.)"), |
8617 | NULL, | |
920d2a44 | 8618 | show_can_use_hw_watchpoints, |
85c07804 | 8619 | &setlist, &showlist); |
c906108c SS |
8620 | |
8621 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 8622 | |
1bedd215 | 8623 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
8624 | Breakpoint specific settings\n\ |
8625 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 8626 | pending breakpoint behavior"), |
fa8d40ab JJ |
8627 | &breakpoint_set_cmdlist, "set breakpoint ", |
8628 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 8629 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
8630 | Breakpoint specific settings\n\ |
8631 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 8632 | pending breakpoint behavior"), |
fa8d40ab JJ |
8633 | &breakpoint_show_cmdlist, "show breakpoint ", |
8634 | 0/*allow-unknown*/, &showlist); | |
8635 | ||
7915a72c AC |
8636 | add_setshow_auto_boolean_cmd ("pending", no_class, |
8637 | &pending_break_support, _("\ | |
8638 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
8639 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
8640 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
8641 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
8642 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 8643 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 8644 | NULL, |
920d2a44 | 8645 | show_pending_break_support, |
6e1d7d6c AC |
8646 | &breakpoint_set_cmdlist, |
8647 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
8648 | |
8649 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
8650 | |
8651 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
8652 | &automatic_hardware_breakpoints, _("\ | |
8653 | Set automatic usage of hardware breakpoints."), _("\ | |
8654 | Show automatic usage of hardware breakpoints."), _("\ | |
8655 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
8656 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
8657 | a warning will be emitted for such breakpoints."), | |
8658 | NULL, | |
8659 | show_automatic_hardware_breakpoints, | |
8660 | &breakpoint_set_cmdlist, | |
8661 | &breakpoint_show_cmdlist); | |
74960c60 | 8662 | |
33e5cbd6 PA |
8663 | add_setshow_enum_cmd ("always-inserted", class_support, |
8664 | always_inserted_enums, &always_inserted_mode, _("\ | |
74960c60 VP |
8665 | Set mode for inserting breakpoints."), _("\ |
8666 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
8667 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
8668 | resumed, and removed when execution stops. When this mode is on,\n\ | |
8669 | breakpoints are inserted immediately and removed only when the user\n\ | |
8670 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
8671 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
8672 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
8673 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
8674 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
74960c60 VP |
8675 | NULL, |
8676 | &show_always_inserted_mode, | |
8677 | &breakpoint_set_cmdlist, | |
8678 | &breakpoint_show_cmdlist); | |
765dc015 VP |
8679 | |
8680 | automatic_hardware_breakpoints = 1; | |
c906108c | 8681 | } |