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" |
79a45b7d | 59 | #include "valprint.h" |
c906108c | 60 | |
034dad6f | 61 | #include "mi/mi-common.h" |
104c1213 | 62 | |
44feb3ce TT |
63 | /* Arguments to pass as context to some catch command handlers. */ |
64 | #define CATCH_PERMANENT ((void *) (uintptr_t) 0) | |
65 | #define CATCH_TEMPORARY ((void *) (uintptr_t) 1) | |
c906108c | 66 | |
44feb3ce | 67 | /* Prototypes for local functions. */ |
c906108c | 68 | |
a14ed312 | 69 | static void enable_delete_command (char *, int); |
c906108c | 70 | |
a14ed312 | 71 | static void enable_delete_breakpoint (struct breakpoint *); |
c906108c | 72 | |
a14ed312 | 73 | static void enable_once_command (char *, int); |
c906108c | 74 | |
a14ed312 | 75 | static void enable_once_breakpoint (struct breakpoint *); |
c906108c | 76 | |
a14ed312 | 77 | static void disable_command (char *, int); |
c906108c | 78 | |
a14ed312 | 79 | static void enable_command (char *, int); |
c906108c | 80 | |
a14ed312 | 81 | static void map_breakpoint_numbers (char *, void (*)(struct breakpoint *)); |
c906108c | 82 | |
a14ed312 | 83 | static void ignore_command (char *, int); |
c906108c | 84 | |
4efb68b1 | 85 | static int breakpoint_re_set_one (void *); |
c906108c | 86 | |
a14ed312 | 87 | static void clear_command (char *, int); |
c906108c | 88 | |
a14ed312 | 89 | static void catch_command (char *, int); |
c906108c | 90 | |
a14ed312 | 91 | static void watch_command (char *, int); |
c906108c | 92 | |
a14ed312 | 93 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 94 | |
98deb0da | 95 | static void break_command_1 (char *, int, int); |
c906108c | 96 | |
a14ed312 | 97 | static void mention (struct breakpoint *); |
c906108c | 98 | |
4d28f7a8 | 99 | struct breakpoint *set_raw_breakpoint (struct symtab_and_line, enum bptype); |
c906108c | 100 | |
9f60f21b | 101 | static void check_duplicates (struct breakpoint *); |
c906108c | 102 | |
76897487 KB |
103 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
104 | ||
88f7da05 KB |
105 | static CORE_ADDR adjust_breakpoint_address (CORE_ADDR bpaddr, |
106 | enum bptype bptype); | |
76897487 | 107 | |
714835d5 | 108 | static void describe_other_breakpoints (CORE_ADDR, struct obj_section *, int); |
c906108c | 109 | |
a14ed312 | 110 | static void breakpoints_info (char *, int); |
c906108c | 111 | |
a14ed312 | 112 | static void breakpoint_1 (int, int); |
c906108c | 113 | |
89f9893c | 114 | static bpstat bpstat_alloc (const struct bp_location *, bpstat); |
c906108c | 115 | |
4efb68b1 | 116 | static int breakpoint_cond_eval (void *); |
c906108c | 117 | |
4efb68b1 | 118 | static void cleanup_executing_breakpoints (void *); |
c906108c | 119 | |
a14ed312 | 120 | static void commands_command (char *, int); |
c906108c | 121 | |
a14ed312 | 122 | static void condition_command (char *, int); |
c906108c | 123 | |
a14ed312 | 124 | static int get_number_trailer (char **, int); |
c906108c | 125 | |
a14ed312 | 126 | void set_breakpoint_count (int); |
c906108c | 127 | |
c5aa993b JM |
128 | typedef enum |
129 | { | |
130 | mark_inserted, | |
131 | mark_uninserted | |
132 | } | |
133 | insertion_state_t; | |
c906108c | 134 | |
0bde7532 | 135 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
c906108c | 136 | |
a14ed312 | 137 | static enum print_stop_action print_it_typical (bpstat); |
e514a9d6 JM |
138 | |
139 | static enum print_stop_action print_bp_stop_message (bpstat bs); | |
c906108c | 140 | |
4efb68b1 | 141 | static int watchpoint_check (void *); |
c906108c | 142 | |
a14ed312 | 143 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 144 | |
1900040c MS |
145 | static void create_overlay_event_breakpoint (char *); |
146 | ||
a14ed312 | 147 | static int hw_breakpoint_used_count (void); |
c906108c | 148 | |
a14ed312 | 149 | static int hw_watchpoint_used_count (enum bptype, int *); |
c906108c | 150 | |
a14ed312 | 151 | static void hbreak_command (char *, int); |
c906108c | 152 | |
a14ed312 | 153 | static void thbreak_command (char *, int); |
c906108c | 154 | |
a14ed312 | 155 | static void watch_command_1 (char *, int, int); |
c906108c | 156 | |
a14ed312 | 157 | static void rwatch_command (char *, int); |
c906108c | 158 | |
a14ed312 | 159 | static void awatch_command (char *, int); |
c906108c | 160 | |
a14ed312 | 161 | static void do_enable_breakpoint (struct breakpoint *, enum bpdisp); |
c906108c | 162 | |
a14ed312 | 163 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 164 | |
a14ed312 | 165 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 166 | |
a14ed312 | 167 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 168 | |
a14ed312 | 169 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 170 | |
a14ed312 | 171 | static char *ep_parse_optional_filename (char **arg); |
7a292a7a | 172 | |
d85310f7 MS |
173 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
174 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 175 | |
a14ed312 | 176 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 177 | |
a14ed312 | 178 | static void ep_skip_leading_whitespace (char **s); |
7a292a7a | 179 | |
1aafd4da UW |
180 | static int single_step_breakpoint_inserted_here_p (CORE_ADDR pc); |
181 | ||
fe3f5fa8 VP |
182 | static void free_bp_location (struct bp_location *loc); |
183 | ||
a5606eee VP |
184 | static struct bp_location * |
185 | allocate_bp_location (struct breakpoint *bpt, enum bptype bp_type); | |
186 | ||
b60e7edf | 187 | static void update_global_location_list (int); |
a5606eee | 188 | |
b60e7edf | 189 | static void update_global_location_list_nothrow (int); |
74960c60 VP |
190 | |
191 | static int is_hardware_watchpoint (struct breakpoint *bpt); | |
192 | ||
193 | static void insert_breakpoint_locations (void); | |
a5606eee | 194 | |
2cec12e5 AR |
195 | static const char * |
196 | bpdisp_text (enum bpdisp disp) | |
197 | { | |
198 | /* NOTE: the following values are a part of MI protocol and represent | |
199 | values of 'disp' field returned when inferior stops at a breakpoint. */ | |
200 | static char *bpdisps[] = {"del", "dstp", "dis", "keep"}; | |
201 | return bpdisps[(int) disp]; | |
202 | } | |
c906108c | 203 | |
2cec12e5 | 204 | /* Prototypes for exported functions. */ |
c906108c SS |
205 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
206 | if such is available. */ | |
207 | static int can_use_hw_watchpoints; | |
208 | ||
920d2a44 AC |
209 | static void |
210 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
211 | struct cmd_list_element *c, | |
212 | const char *value) | |
213 | { | |
214 | fprintf_filtered (file, _("\ | |
215 | Debugger's willingness to use watchpoint hardware is %s.\n"), | |
216 | value); | |
217 | } | |
218 | ||
fa8d40ab JJ |
219 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
220 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
221 | for unrecognized breakpoint locations. | |
222 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ | |
223 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
224 | static void |
225 | show_pending_break_support (struct ui_file *file, int from_tty, | |
226 | struct cmd_list_element *c, | |
227 | const char *value) | |
228 | { | |
229 | fprintf_filtered (file, _("\ | |
230 | Debugger's behavior regarding pending breakpoints is %s.\n"), | |
231 | value); | |
232 | } | |
fa8d40ab | 233 | |
765dc015 VP |
234 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
235 | set with "break" but falling in read-only memory. | |
236 | If 0, gdb will warn about such breakpoints, but won't automatically | |
237 | use hardware breakpoints. */ | |
238 | static int automatic_hardware_breakpoints; | |
239 | static void | |
240 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
241 | struct cmd_list_element *c, | |
242 | const char *value) | |
243 | { | |
244 | fprintf_filtered (file, _("\ | |
245 | Automatic usage of hardware breakpoints is %s.\n"), | |
246 | value); | |
247 | } | |
248 | ||
33e5cbd6 PA |
249 | /* If on, gdb will keep breakpoints inserted even as inferior is |
250 | stopped, and immediately insert any new breakpoints. If off, gdb | |
251 | will insert breakpoints into inferior only when resuming it, and | |
252 | will remove breakpoints upon stop. If auto, GDB will behave as ON | |
253 | if in non-stop mode, and as OFF if all-stop mode.*/ | |
254 | ||
255 | static const char always_inserted_auto[] = "auto"; | |
256 | static const char always_inserted_on[] = "on"; | |
257 | static const char always_inserted_off[] = "off"; | |
258 | static const char *always_inserted_enums[] = { | |
259 | always_inserted_auto, | |
260 | always_inserted_off, | |
261 | always_inserted_on, | |
262 | NULL | |
263 | }; | |
264 | static const char *always_inserted_mode = always_inserted_auto; | |
265 | static void | |
74960c60 | 266 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 267 | struct cmd_list_element *c, const char *value) |
74960c60 | 268 | { |
33e5cbd6 PA |
269 | if (always_inserted_mode == always_inserted_auto) |
270 | fprintf_filtered (file, _("\ | |
271 | Always inserted breakpoint mode is %s (currently %s).\n"), | |
272 | value, | |
273 | breakpoints_always_inserted_mode () ? "on" : "off"); | |
274 | else | |
275 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), value); | |
74960c60 VP |
276 | } |
277 | ||
33e5cbd6 PA |
278 | int |
279 | breakpoints_always_inserted_mode (void) | |
280 | { | |
281 | return (always_inserted_mode == always_inserted_on | |
282 | || (always_inserted_mode == always_inserted_auto && non_stop)); | |
283 | } | |
765dc015 | 284 | |
a14ed312 | 285 | void _initialize_breakpoint (void); |
c906108c | 286 | |
c906108c SS |
287 | /* Are we executing breakpoint commands? */ |
288 | static int executing_breakpoint_commands; | |
289 | ||
c02f5703 MS |
290 | /* Are overlay event breakpoints enabled? */ |
291 | static int overlay_events_enabled; | |
292 | ||
c906108c SS |
293 | /* Walk the following statement or block through all breakpoints. |
294 | ALL_BREAKPOINTS_SAFE does so even if the statment deletes the current | |
295 | breakpoint. */ | |
296 | ||
5c44784c | 297 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 298 | |
5c44784c JM |
299 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
300 | for (B = breakpoint_chain; \ | |
301 | B ? (TMP=B->next, 1): 0; \ | |
302 | B = TMP) | |
c906108c | 303 | |
7cc221ef DJ |
304 | /* Similar iterators for the low-level breakpoints. */ |
305 | ||
0d381245 | 306 | #define ALL_BP_LOCATIONS(B) for (B = bp_location_chain; B; B = B->global_next) |
7cc221ef DJ |
307 | |
308 | #define ALL_BP_LOCATIONS_SAFE(B,TMP) \ | |
309 | for (B = bp_location_chain; \ | |
0d381245 | 310 | B ? (TMP=B->global_next, 1): 0; \ |
7cc221ef DJ |
311 | B = TMP) |
312 | ||
7cc221ef | 313 | /* Chains of all breakpoints defined. */ |
c906108c SS |
314 | |
315 | struct breakpoint *breakpoint_chain; | |
316 | ||
7cc221ef DJ |
317 | struct bp_location *bp_location_chain; |
318 | ||
20874c92 VP |
319 | /* The locations that no longer correspond to any breakpoint, |
320 | unlinked from bp_location_chain, but for which a hit | |
321 | may still be reported by a target. */ | |
322 | VEC(bp_location_p) *moribund_locations = NULL; | |
323 | ||
c906108c SS |
324 | /* Number of last breakpoint made. */ |
325 | ||
326 | int breakpoint_count; | |
327 | ||
c906108c SS |
328 | /* This function returns a pointer to the string representation of the |
329 | pathname of the dynamically-linked library that has just been | |
330 | loaded. | |
331 | ||
332 | This function must be used only when SOLIB_HAVE_LOAD_EVENT is TRUE, | |
333 | or undefined results are guaranteed. | |
334 | ||
335 | This string's contents are only valid immediately after the | |
336 | inferior has stopped in the dynamic linker hook, and becomes | |
337 | invalid as soon as the inferior is continued. Clients should make | |
338 | a copy of this string if they wish to continue the inferior and | |
339 | then access the string. */ | |
340 | ||
341 | #ifndef SOLIB_LOADED_LIBRARY_PATHNAME | |
342 | #define SOLIB_LOADED_LIBRARY_PATHNAME(pid) "" | |
343 | #endif | |
344 | ||
345 | /* This function returns a pointer to the string representation of the | |
346 | pathname of the dynamically-linked library that has just been | |
347 | unloaded. | |
348 | ||
349 | This function must be used only when SOLIB_HAVE_UNLOAD_EVENT is | |
350 | TRUE, or undefined results are guaranteed. | |
351 | ||
352 | This string's contents are only valid immediately after the | |
353 | inferior has stopped in the dynamic linker hook, and becomes | |
354 | invalid as soon as the inferior is continued. Clients should make | |
355 | a copy of this string if they wish to continue the inferior and | |
356 | then access the string. */ | |
357 | ||
358 | #ifndef SOLIB_UNLOADED_LIBRARY_PATHNAME | |
359 | #define SOLIB_UNLOADED_LIBRARY_PATHNAME(pid) "" | |
360 | #endif | |
361 | ||
362 | /* This function is called by the "catch load" command. It allows the | |
363 | debugger to be notified by the dynamic linker when a specified | |
364 | library file (or any library file, if filename is NULL) is loaded. */ | |
365 | ||
366 | #ifndef SOLIB_CREATE_CATCH_LOAD_HOOK | |
367 | #define SOLIB_CREATE_CATCH_LOAD_HOOK(pid,tempflag,filename,cond_string) \ | |
8a3fe4f8 | 368 | error (_("catch of library loads not yet implemented on this platform")) |
c906108c SS |
369 | #endif |
370 | ||
371 | /* This function is called by the "catch unload" command. It allows | |
372 | the debugger to be notified by the dynamic linker when a specified | |
373 | library file (or any library file, if filename is NULL) is | |
374 | unloaded. */ | |
375 | ||
376 | #ifndef SOLIB_CREATE_CATCH_UNLOAD_HOOK | |
1272ad14 | 377 | #define SOLIB_CREATE_CATCH_UNLOAD_HOOK(pid, tempflag, filename, cond_string) \ |
8a3fe4f8 | 378 | error (_("catch of library unloads not yet implemented on this platform")) |
c906108c SS |
379 | #endif |
380 | ||
468d015d JJ |
381 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
382 | static int | |
383 | breakpoint_enabled (struct breakpoint *b) | |
384 | { | |
0d381245 | 385 | return (b->enable_state == bp_enabled); |
468d015d JJ |
386 | } |
387 | ||
c906108c SS |
388 | /* Set breakpoint count to NUM. */ |
389 | ||
390 | void | |
fba45db2 | 391 | set_breakpoint_count (int num) |
c906108c SS |
392 | { |
393 | breakpoint_count = num; | |
394 | set_internalvar (lookup_internalvar ("bpnum"), | |
8b9b9e1a | 395 | value_from_longest (builtin_type_int32, (LONGEST) num)); |
c906108c SS |
396 | } |
397 | ||
398 | /* Used in run_command to zero the hit count when a new run starts. */ | |
399 | ||
400 | void | |
fba45db2 | 401 | clear_breakpoint_hit_counts (void) |
c906108c SS |
402 | { |
403 | struct breakpoint *b; | |
404 | ||
405 | ALL_BREAKPOINTS (b) | |
406 | b->hit_count = 0; | |
407 | } | |
408 | ||
409 | /* Default address, symtab and line to put a breakpoint at | |
410 | for "break" command with no arg. | |
411 | if default_breakpoint_valid is zero, the other three are | |
412 | not valid, and "break" with no arg is an error. | |
413 | ||
414 | This set by print_stack_frame, which calls set_default_breakpoint. */ | |
415 | ||
416 | int default_breakpoint_valid; | |
417 | CORE_ADDR default_breakpoint_address; | |
418 | struct symtab *default_breakpoint_symtab; | |
419 | int default_breakpoint_line; | |
420 | \f | |
421 | /* *PP is a string denoting a breakpoint. Get the number of the breakpoint. | |
422 | Advance *PP after the string and any trailing whitespace. | |
423 | ||
424 | Currently the string can either be a number or "$" followed by the name | |
425 | of a convenience variable. Making it an expression wouldn't work well | |
5c44784c | 426 | for map_breakpoint_numbers (e.g. "4 + 5 + 6"). |
40c03ae8 EZ |
427 | |
428 | If the string is a NULL pointer, that denotes the last breakpoint. | |
5c44784c JM |
429 | |
430 | TRAILER is a character which can be found after the number; most | |
431 | commonly this is `-'. If you don't want a trailer, use \0. */ | |
c906108c | 432 | static int |
fba45db2 | 433 | get_number_trailer (char **pp, int trailer) |
c906108c | 434 | { |
5c44784c | 435 | int retval = 0; /* default */ |
c906108c SS |
436 | char *p = *pp; |
437 | ||
438 | if (p == NULL) | |
439 | /* Empty line means refer to the last breakpoint. */ | |
440 | return breakpoint_count; | |
441 | else if (*p == '$') | |
442 | { | |
443 | /* Make a copy of the name, so we can null-terminate it | |
c5aa993b | 444 | to pass to lookup_internalvar(). */ |
c906108c SS |
445 | char *varname; |
446 | char *start = ++p; | |
278cd55f | 447 | struct value *val; |
c906108c SS |
448 | |
449 | while (isalnum (*p) || *p == '_') | |
450 | p++; | |
451 | varname = (char *) alloca (p - start + 1); | |
452 | strncpy (varname, start, p - start); | |
453 | varname[p - start] = '\0'; | |
454 | val = value_of_internalvar (lookup_internalvar (varname)); | |
df407dfe | 455 | if (TYPE_CODE (value_type (val)) == TYPE_CODE_INT) |
5c44784c JM |
456 | retval = (int) value_as_long (val); |
457 | else | |
458 | { | |
a3f17187 | 459 | printf_filtered (_("Convenience variable must have integer value.\n")); |
5c44784c JM |
460 | retval = 0; |
461 | } | |
c906108c SS |
462 | } |
463 | else | |
464 | { | |
465 | if (*p == '-') | |
466 | ++p; | |
467 | while (*p >= '0' && *p <= '9') | |
468 | ++p; | |
469 | if (p == *pp) | |
470 | /* There is no number here. (e.g. "cond a == b"). */ | |
5c44784c JM |
471 | { |
472 | /* Skip non-numeric token */ | |
473 | while (*p && !isspace((int) *p)) | |
474 | ++p; | |
475 | /* Return zero, which caller must interpret as error. */ | |
476 | retval = 0; | |
477 | } | |
478 | else | |
479 | retval = atoi (*pp); | |
480 | } | |
481 | if (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
482 | { | |
483 | /* Trailing junk: return 0 and let caller print error msg. */ | |
484 | while (!(isspace (*p) || *p == '\0' || *p == trailer)) | |
485 | ++p; | |
486 | retval = 0; | |
c906108c | 487 | } |
c906108c SS |
488 | while (isspace (*p)) |
489 | p++; | |
490 | *pp = p; | |
491 | return retval; | |
492 | } | |
5c44784c | 493 | |
11cf8741 | 494 | |
5c44784c JM |
495 | /* Like get_number_trailer, but don't allow a trailer. */ |
496 | int | |
fba45db2 | 497 | get_number (char **pp) |
5c44784c JM |
498 | { |
499 | return get_number_trailer (pp, '\0'); | |
500 | } | |
501 | ||
502 | /* Parse a number or a range. | |
503 | * A number will be of the form handled by get_number. | |
504 | * A range will be of the form <number1> - <number2>, and | |
505 | * will represent all the integers between number1 and number2, | |
506 | * inclusive. | |
507 | * | |
508 | * While processing a range, this fuction is called iteratively; | |
509 | * At each call it will return the next value in the range. | |
510 | * | |
511 | * At the beginning of parsing a range, the char pointer PP will | |
512 | * be advanced past <number1> and left pointing at the '-' token. | |
513 | * Subsequent calls will not advance the pointer until the range | |
514 | * is completed. The call that completes the range will advance | |
515 | * pointer PP past <number2>. | |
516 | */ | |
517 | ||
518 | int | |
fba45db2 | 519 | get_number_or_range (char **pp) |
5c44784c JM |
520 | { |
521 | static int last_retval, end_value; | |
522 | static char *end_ptr; | |
523 | static int in_range = 0; | |
524 | ||
525 | if (**pp != '-') | |
526 | { | |
527 | /* Default case: pp is pointing either to a solo number, | |
528 | or to the first number of a range. */ | |
529 | last_retval = get_number_trailer (pp, '-'); | |
530 | if (**pp == '-') | |
531 | { | |
532 | char **temp; | |
533 | ||
534 | /* This is the start of a range (<number1> - <number2>). | |
535 | Skip the '-', parse and remember the second number, | |
536 | and also remember the end of the final token. */ | |
537 | ||
538 | temp = &end_ptr; | |
539 | end_ptr = *pp + 1; | |
540 | while (isspace ((int) *end_ptr)) | |
541 | end_ptr++; /* skip white space */ | |
542 | end_value = get_number (temp); | |
543 | if (end_value < last_retval) | |
544 | { | |
8a3fe4f8 | 545 | error (_("inverted range")); |
5c44784c JM |
546 | } |
547 | else if (end_value == last_retval) | |
548 | { | |
549 | /* degenerate range (number1 == number2). Advance the | |
550 | token pointer so that the range will be treated as a | |
551 | single number. */ | |
552 | *pp = end_ptr; | |
553 | } | |
554 | else | |
555 | in_range = 1; | |
556 | } | |
557 | } | |
558 | else if (! in_range) | |
8a3fe4f8 | 559 | error (_("negative value")); |
5c44784c JM |
560 | else |
561 | { | |
562 | /* pp points to the '-' that betokens a range. All | |
563 | number-parsing has already been done. Return the next | |
564 | integer value (one greater than the saved previous value). | |
565 | Do not advance the token pointer 'pp' until the end of range | |
566 | is reached. */ | |
567 | ||
568 | if (++last_retval == end_value) | |
569 | { | |
570 | /* End of range reached; advance token pointer. */ | |
571 | *pp = end_ptr; | |
572 | in_range = 0; | |
573 | } | |
574 | } | |
575 | return last_retval; | |
576 | } | |
577 | ||
578 | ||
c906108c SS |
579 | \f |
580 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ | |
581 | ||
582 | static void | |
fba45db2 | 583 | condition_command (char *arg, int from_tty) |
c906108c | 584 | { |
52f0bd74 | 585 | struct breakpoint *b; |
c906108c | 586 | char *p; |
52f0bd74 | 587 | int bnum; |
c906108c SS |
588 | |
589 | if (arg == 0) | |
e2e0b3e5 | 590 | error_no_arg (_("breakpoint number")); |
c906108c SS |
591 | |
592 | p = arg; | |
593 | bnum = get_number (&p); | |
5c44784c | 594 | if (bnum == 0) |
8a3fe4f8 | 595 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
596 | |
597 | ALL_BREAKPOINTS (b) | |
598 | if (b->number == bnum) | |
2f069f6f JB |
599 | { |
600 | struct bp_location *loc = b->loc; | |
601 | for (; loc; loc = loc->next) | |
602 | { | |
603 | if (loc->cond) | |
604 | { | |
605 | xfree (loc->cond); | |
606 | loc->cond = 0; | |
607 | } | |
608 | } | |
609 | if (b->cond_string != NULL) | |
610 | xfree (b->cond_string); | |
c906108c | 611 | |
2f069f6f JB |
612 | if (*p == 0) |
613 | { | |
614 | b->cond_string = NULL; | |
615 | if (from_tty) | |
616 | printf_filtered (_("Breakpoint %d now unconditional.\n"), bnum); | |
617 | } | |
618 | else | |
619 | { | |
620 | arg = p; | |
621 | /* I don't know if it matters whether this is the string the user | |
622 | typed in or the decompiled expression. */ | |
623 | b->cond_string = savestring (arg, strlen (arg)); | |
624 | b->condition_not_parsed = 0; | |
625 | for (loc = b->loc; loc; loc = loc->next) | |
626 | { | |
627 | arg = p; | |
628 | loc->cond = | |
629 | parse_exp_1 (&arg, block_for_pc (loc->address), 0); | |
630 | if (*arg) | |
631 | error (_("Junk at end of expression")); | |
632 | } | |
633 | } | |
634 | breakpoints_changed (); | |
383f836e | 635 | observer_notify_breakpoint_modified (b->number); |
2f069f6f JB |
636 | return; |
637 | } | |
c906108c | 638 | |
8a3fe4f8 | 639 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
640 | } |
641 | ||
c906108c | 642 | static void |
fba45db2 | 643 | commands_command (char *arg, int from_tty) |
c906108c | 644 | { |
52f0bd74 | 645 | struct breakpoint *b; |
c906108c | 646 | char *p; |
52f0bd74 | 647 | int bnum; |
c906108c SS |
648 | struct command_line *l; |
649 | ||
650 | /* If we allowed this, we would have problems with when to | |
651 | free the storage, if we change the commands currently | |
652 | being read from. */ | |
653 | ||
654 | if (executing_breakpoint_commands) | |
8a3fe4f8 | 655 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); |
c906108c SS |
656 | |
657 | p = arg; | |
658 | bnum = get_number (&p); | |
5c44784c | 659 | |
c906108c | 660 | if (p && *p) |
8a3fe4f8 | 661 | error (_("Unexpected extra arguments following breakpoint number.")); |
c5aa993b | 662 | |
c906108c SS |
663 | ALL_BREAKPOINTS (b) |
664 | if (b->number == bnum) | |
9ebf4acf AC |
665 | { |
666 | char *tmpbuf = xstrprintf ("Type commands for when breakpoint %d is hit, one per line.", | |
667 | bnum); | |
668 | struct cleanup *cleanups = make_cleanup (xfree, tmpbuf); | |
311a4e6b | 669 | l = read_command_lines (tmpbuf, from_tty, 1); |
9ebf4acf AC |
670 | do_cleanups (cleanups); |
671 | free_command_lines (&b->commands); | |
672 | b->commands = l; | |
673 | breakpoints_changed (); | |
383f836e | 674 | observer_notify_breakpoint_modified (b->number); |
9ebf4acf | 675 | return; |
c5aa993b | 676 | } |
8a3fe4f8 | 677 | error (_("No breakpoint number %d."), bnum); |
c906108c | 678 | } |
40c03ae8 EZ |
679 | |
680 | /* Like commands_command, but instead of reading the commands from | |
681 | input stream, takes them from an already parsed command structure. | |
682 | ||
683 | This is used by cli-script.c to DTRT with breakpoint commands | |
684 | that are part of if and while bodies. */ | |
685 | enum command_control_type | |
686 | commands_from_control_command (char *arg, struct command_line *cmd) | |
687 | { | |
688 | struct breakpoint *b; | |
689 | char *p; | |
690 | int bnum; | |
691 | ||
692 | /* If we allowed this, we would have problems with when to | |
693 | free the storage, if we change the commands currently | |
694 | being read from. */ | |
695 | ||
696 | if (executing_breakpoint_commands) | |
697 | error (_("Can't use the \"commands\" command among a breakpoint's commands.")); | |
698 | ||
699 | /* An empty string for the breakpoint number means the last | |
700 | breakpoint, but get_number expects a NULL pointer. */ | |
701 | if (arg && !*arg) | |
702 | p = NULL; | |
703 | else | |
704 | p = arg; | |
705 | bnum = get_number (&p); | |
706 | ||
707 | if (p && *p) | |
708 | error (_("Unexpected extra arguments following breakpoint number.")); | |
709 | ||
710 | ALL_BREAKPOINTS (b) | |
711 | if (b->number == bnum) | |
712 | { | |
713 | free_command_lines (&b->commands); | |
714 | if (cmd->body_count != 1) | |
715 | error (_("Invalid \"commands\" block structure.")); | |
716 | /* We need to copy the commands because if/while will free the | |
717 | list after it finishes execution. */ | |
718 | b->commands = copy_command_lines (cmd->body_list[0]); | |
719 | breakpoints_changed (); | |
383f836e | 720 | observer_notify_breakpoint_modified (b->number); |
40c03ae8 | 721 | return simple_control; |
2f069f6f | 722 | } |
40c03ae8 EZ |
723 | error (_("No breakpoint number %d."), bnum); |
724 | } | |
c906108c | 725 | \f |
8defab1a DJ |
726 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
727 | by replacing any memory breakpoints with their shadowed contents. */ | |
c906108c | 728 | |
8defab1a DJ |
729 | void |
730 | breakpoint_restore_shadows (gdb_byte *buf, ULONGEST memaddr, LONGEST len) | |
c906108c | 731 | { |
8defab1a | 732 | struct bp_location *b; |
c906108c SS |
733 | CORE_ADDR bp_addr = 0; |
734 | int bp_size = 0; | |
8defab1a | 735 | int bptoffset = 0; |
c5aa993b | 736 | |
ffce0d52 | 737 | ALL_BP_LOCATIONS (b) |
c5aa993b | 738 | { |
ffce0d52 | 739 | if (b->owner->type == bp_none) |
8a3fe4f8 | 740 | warning (_("reading through apparently deleted breakpoint #%d?"), |
ffce0d52 DJ |
741 | b->owner->number); |
742 | ||
743 | if (b->loc_type != bp_loc_software_breakpoint) | |
c5aa993b | 744 | continue; |
ffce0d52 | 745 | if (!b->inserted) |
c5aa993b JM |
746 | continue; |
747 | /* Addresses and length of the part of the breakpoint that | |
748 | we need to copy. */ | |
8181d85f DJ |
749 | bp_addr = b->target_info.placed_address; |
750 | bp_size = b->target_info.shadow_len; | |
c5aa993b | 751 | if (bp_size == 0) |
8181d85f | 752 | /* bp isn't valid, or doesn't shadow memory. */ |
c5aa993b | 753 | continue; |
8defab1a | 754 | |
c5aa993b JM |
755 | if (bp_addr + bp_size <= memaddr) |
756 | /* The breakpoint is entirely before the chunk of memory we | |
757 | are reading. */ | |
758 | continue; | |
8defab1a | 759 | |
c5aa993b JM |
760 | if (bp_addr >= memaddr + len) |
761 | /* The breakpoint is entirely after the chunk of memory we are | |
762 | reading. */ | |
763 | continue; | |
c5aa993b | 764 | |
8defab1a DJ |
765 | /* Offset within shadow_contents. */ |
766 | if (bp_addr < memaddr) | |
767 | { | |
768 | /* Only copy the second part of the breakpoint. */ | |
769 | bp_size -= memaddr - bp_addr; | |
770 | bptoffset = memaddr - bp_addr; | |
771 | bp_addr = memaddr; | |
772 | } | |
c5aa993b | 773 | |
8defab1a DJ |
774 | if (bp_addr + bp_size > memaddr + len) |
775 | { | |
776 | /* Only copy the first part of the breakpoint. */ | |
777 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
778 | } | |
c5aa993b | 779 | |
8defab1a DJ |
780 | memcpy (buf + bp_addr - memaddr, |
781 | b->target_info.shadow_contents + bptoffset, bp_size); | |
c5aa993b | 782 | } |
c906108c | 783 | } |
c906108c | 784 | \f |
c5aa993b | 785 | |
687595f9 | 786 | /* A wrapper function for inserting catchpoints. */ |
9cbc821d | 787 | static void |
687595f9 DJ |
788 | insert_catchpoint (struct ui_out *uo, void *args) |
789 | { | |
790 | struct breakpoint *b = (struct breakpoint *) args; | |
791 | int val = -1; | |
792 | ||
fe798b75 JB |
793 | gdb_assert (b->type == bp_catchpoint); |
794 | gdb_assert (b->ops != NULL && b->ops->insert != NULL); | |
795 | ||
796 | b->ops->insert (b); | |
687595f9 DJ |
797 | } |
798 | ||
a5606eee VP |
799 | static int |
800 | is_hardware_watchpoint (struct breakpoint *bpt) | |
801 | { | |
802 | return (bpt->type == bp_hardware_watchpoint | |
803 | || bpt->type == bp_read_watchpoint | |
804 | || bpt->type == bp_access_watchpoint); | |
805 | } | |
7270d8f2 | 806 | |
fa4727a6 DJ |
807 | /* Find the current value of a watchpoint on EXP. Return the value in |
808 | *VALP and *RESULTP and the chain of intermediate and final values | |
809 | in *VAL_CHAIN. RESULTP and VAL_CHAIN may be NULL if the caller does | |
810 | not need them. | |
811 | ||
812 | If an error occurs while evaluating the expression, *RESULTP will | |
813 | be set to NULL. *RESULTP may be a lazy value, if the result could | |
814 | not be read from memory. It is used to determine whether a value | |
815 | is user-specified (we should watch the whole value) or intermediate | |
816 | (we should watch only the bit used to locate the final value). | |
817 | ||
818 | If the final value, or any intermediate value, could not be read | |
819 | from memory, *VALP will be set to NULL. *VAL_CHAIN will still be | |
820 | set to any referenced values. *VALP will never be a lazy value. | |
821 | This is the value which we store in struct breakpoint. | |
822 | ||
823 | If VAL_CHAIN is non-NULL, *VAL_CHAIN will be released from the | |
824 | value chain. The caller must free the values individually. If | |
825 | VAL_CHAIN is NULL, all generated values will be left on the value | |
826 | chain. */ | |
827 | ||
828 | static void | |
829 | fetch_watchpoint_value (struct expression *exp, struct value **valp, | |
830 | struct value **resultp, struct value **val_chain) | |
831 | { | |
832 | struct value *mark, *new_mark, *result; | |
833 | ||
834 | *valp = NULL; | |
835 | if (resultp) | |
836 | *resultp = NULL; | |
837 | if (val_chain) | |
838 | *val_chain = NULL; | |
839 | ||
840 | /* Evaluate the expression. */ | |
841 | mark = value_mark (); | |
842 | result = NULL; | |
843 | gdb_evaluate_expression (exp, &result); | |
844 | new_mark = value_mark (); | |
845 | if (mark == new_mark) | |
846 | return; | |
847 | if (resultp) | |
848 | *resultp = result; | |
849 | ||
850 | /* Make sure it's not lazy, so that after the target stops again we | |
851 | have a non-lazy previous value to compare with. */ | |
852 | if (result != NULL | |
853 | && (!value_lazy (result) || gdb_value_fetch_lazy (result))) | |
854 | *valp = result; | |
855 | ||
856 | if (val_chain) | |
857 | { | |
858 | /* Return the chain of intermediate values. We use this to | |
859 | decide which addresses to watch. */ | |
860 | *val_chain = new_mark; | |
861 | value_release_to_mark (mark); | |
862 | } | |
863 | } | |
864 | ||
865 | /* Assuming that B is a hardware watchpoint: | |
a5606eee VP |
866 | - Reparse watchpoint expression, is REPARSE is non-zero |
867 | - Evaluate expression and store the result in B->val | |
868 | - Update the list of values that must be watched in B->loc. | |
869 | ||
870 | If the watchpoint is disabled, do nothing. If this is | |
871 | local watchpoint that is out of scope, delete it. */ | |
b40ce68a | 872 | static void |
a5606eee | 873 | update_watchpoint (struct breakpoint *b, int reparse) |
7270d8f2 | 874 | { |
a5606eee | 875 | int within_current_scope; |
a5606eee VP |
876 | struct frame_id saved_frame_id; |
877 | struct bp_location *loc; | |
878 | bpstat bs; | |
879 | ||
74960c60 VP |
880 | /* We don't free locations. They are stored in |
881 | bp_location_chain and update_global_locations will | |
882 | eventually delete them and remove breakpoints if | |
883 | needed. */ | |
a5606eee VP |
884 | b->loc = NULL; |
885 | ||
886 | if (b->disposition == disp_del_at_next_stop) | |
887 | return; | |
888 | ||
889 | /* Save the current frame's ID so we can restore it after | |
890 | evaluating the watchpoint expression on its own frame. */ | |
891 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
892 | took a frame parameter, so that we didn't have to change the | |
893 | selected frame. */ | |
894 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
895 | ||
896 | /* Determine if the watchpoint is within scope. */ | |
897 | if (b->exp_valid_block == NULL) | |
898 | within_current_scope = 1; | |
899 | else | |
900 | { | |
901 | struct frame_info *fi; | |
902 | fi = frame_find_by_id (b->watchpoint_frame); | |
903 | within_current_scope = (fi != NULL); | |
904 | if (within_current_scope) | |
905 | select_frame (fi); | |
906 | } | |
907 | ||
908 | if (within_current_scope && reparse) | |
909 | { | |
910 | char *s; | |
911 | if (b->exp) | |
912 | { | |
913 | xfree (b->exp); | |
914 | b->exp = NULL; | |
915 | } | |
916 | s = b->exp_string; | |
917 | b->exp = parse_exp_1 (&s, b->exp_valid_block, 0); | |
918 | /* If the meaning of expression itself changed, the old value is | |
919 | no longer relevant. We don't want to report a watchpoint hit | |
920 | to the user when the old value and the new value may actually | |
921 | be completely different objects. */ | |
922 | value_free (b->val); | |
fa4727a6 DJ |
923 | b->val = NULL; |
924 | b->val_valid = 0; | |
a5606eee | 925 | } |
a5606eee VP |
926 | |
927 | /* If we failed to parse the expression, for example because | |
928 | it refers to a global variable in a not-yet-loaded shared library, | |
929 | don't try to insert watchpoint. We don't automatically delete | |
930 | such watchpoint, though, since failure to parse expression | |
931 | is different from out-of-scope watchpoint. */ | |
932 | if (within_current_scope && b->exp) | |
933 | { | |
fa4727a6 | 934 | struct value *val_chain, *v, *result, *next; |
a5606eee | 935 | |
fa4727a6 | 936 | fetch_watchpoint_value (b->exp, &v, &result, &val_chain); |
a5606eee | 937 | |
a5606eee VP |
938 | /* Avoid setting b->val if it's already set. The meaning of |
939 | b->val is 'the last value' user saw, and we should update | |
940 | it only if we reported that last value to user. As it | |
941 | happens, the code that reports it updates b->val directly. */ | |
fa4727a6 DJ |
942 | if (!b->val_valid) |
943 | { | |
944 | b->val = v; | |
945 | b->val_valid = 1; | |
946 | } | |
a5606eee VP |
947 | |
948 | /* Look at each value on the value chain. */ | |
fa4727a6 | 949 | for (v = val_chain; v; v = next) |
a5606eee VP |
950 | { |
951 | /* If it's a memory location, and GDB actually needed | |
952 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
953 | must watch it. If the first value returned is |
954 | still lazy, that means an error occurred reading it; | |
955 | watch it anyway in case it becomes readable. */ | |
a5606eee | 956 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 957 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
958 | { |
959 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 960 | |
a5606eee VP |
961 | /* We only watch structs and arrays if user asked |
962 | for it explicitly, never if they just happen to | |
963 | appear in the middle of some value chain. */ | |
fa4727a6 | 964 | if (v == result |
a5606eee VP |
965 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
966 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
967 | { | |
968 | CORE_ADDR addr; | |
969 | int len, type; | |
970 | struct bp_location *loc, **tmp; | |
971 | ||
972 | addr = VALUE_ADDRESS (v) + value_offset (v); | |
973 | len = TYPE_LENGTH (value_type (v)); | |
974 | type = hw_write; | |
975 | if (b->type == bp_read_watchpoint) | |
976 | type = hw_read; | |
977 | else if (b->type == bp_access_watchpoint) | |
978 | type = hw_access; | |
979 | ||
980 | loc = allocate_bp_location (b, bp_hardware_watchpoint); | |
981 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
982 | ; | |
983 | *tmp = loc; | |
984 | loc->address = addr; | |
985 | loc->length = len; | |
986 | loc->watchpoint_type = type; | |
987 | } | |
988 | } | |
989 | ||
990 | next = value_next (v); | |
991 | if (v != b->val) | |
992 | value_free (v); | |
993 | } | |
994 | ||
2ec93238 MK |
995 | /* We just regenerated the list of breakpoint locations. |
996 | The new location does not have its condition field set to anything | |
997 | and therefore, we must always reparse the cond_string, independently | |
998 | of the value of the reparse flag. */ | |
999 | if (b->cond_string != NULL) | |
a5606eee VP |
1000 | { |
1001 | char *s = b->cond_string; | |
a5606eee VP |
1002 | b->loc->cond = parse_exp_1 (&s, b->exp_valid_block, 0); |
1003 | } | |
1004 | } | |
1005 | else if (!within_current_scope) | |
7270d8f2 | 1006 | { |
a5606eee VP |
1007 | printf_filtered (_("\ |
1008 | Hardware watchpoint %d deleted because the program has left the block \n\ | |
1009 | in which its expression is valid.\n"), | |
1010 | b->number); | |
1011 | if (b->related_breakpoint) | |
1012 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1013 | b->disposition = disp_del_at_next_stop; | |
7270d8f2 | 1014 | } |
a5606eee VP |
1015 | |
1016 | /* Restore the selected frame. */ | |
1017 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1018 | } |
1019 | ||
a5606eee | 1020 | |
74960c60 VP |
1021 | /* Returns 1 iff breakpoint location should be |
1022 | inserted in the inferior. */ | |
1023 | static int | |
1024 | should_be_inserted (struct bp_location *bpt) | |
1025 | { | |
1026 | if (!breakpoint_enabled (bpt->owner)) | |
1027 | return 0; | |
1028 | ||
1029 | if (bpt->owner->disposition == disp_del_at_next_stop) | |
1030 | return 0; | |
1031 | ||
1032 | if (!bpt->enabled || bpt->shlib_disabled || bpt->duplicate) | |
1033 | return 0; | |
1034 | ||
1035 | return 1; | |
1036 | } | |
1037 | ||
879bfdc2 DJ |
1038 | /* Insert a low-level "breakpoint" of some type. BPT is the breakpoint. |
1039 | Any error messages are printed to TMP_ERROR_STREAM; and DISABLED_BREAKS, | |
1040 | PROCESS_WARNING, and HW_BREAKPOINT_ERROR are used to report problems. | |
1041 | ||
1042 | NOTE drow/2003-09-09: This routine could be broken down to an object-style | |
1043 | method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 1044 | static int |
879bfdc2 | 1045 | insert_bp_location (struct bp_location *bpt, |
26bb91f3 DJ |
1046 | struct ui_file *tmp_error_stream, |
1047 | int *disabled_breaks, int *process_warning, | |
1048 | int *hw_breakpoint_error) | |
879bfdc2 DJ |
1049 | { |
1050 | int val = 0; | |
1051 | ||
74960c60 | 1052 | if (!should_be_inserted (bpt) || bpt->inserted) |
879bfdc2 DJ |
1053 | return 0; |
1054 | ||
8181d85f DJ |
1055 | /* Initialize the target-specific information. */ |
1056 | memset (&bpt->target_info, 0, sizeof (bpt->target_info)); | |
1057 | bpt->target_info.placed_address = bpt->address; | |
1058 | ||
879bfdc2 DJ |
1059 | if (bpt->loc_type == bp_loc_software_breakpoint |
1060 | || bpt->loc_type == bp_loc_hardware_breakpoint) | |
1061 | { | |
765dc015 VP |
1062 | if (bpt->owner->type != bp_hardware_breakpoint) |
1063 | { | |
1064 | /* If the explicitly specified breakpoint type | |
1065 | is not hardware breakpoint, check the memory map to see | |
1066 | if the breakpoint address is in read only memory or not. | |
1067 | Two important cases are: | |
1068 | - location type is not hardware breakpoint, memory | |
1069 | is readonly. We change the type of the location to | |
1070 | hardware breakpoint. | |
1071 | - location type is hardware breakpoint, memory is read-write. | |
1072 | This means we've previously made the location hardware one, but | |
1073 | then the memory map changed, so we undo. | |
1074 | ||
1075 | When breakpoints are removed, remove_breakpoints will | |
1076 | use location types we've just set here, the only possible | |
1077 | problem is that memory map has changed during running program, | |
1078 | but it's not going to work anyway with current gdb. */ | |
1079 | struct mem_region *mr | |
1080 | = lookup_mem_region (bpt->target_info.placed_address); | |
1081 | ||
1082 | if (mr) | |
1083 | { | |
1084 | if (automatic_hardware_breakpoints) | |
1085 | { | |
1086 | int changed = 0; | |
1087 | enum bp_loc_type new_type; | |
1088 | ||
1089 | if (mr->attrib.mode != MEM_RW) | |
1090 | new_type = bp_loc_hardware_breakpoint; | |
1091 | else | |
1092 | new_type = bp_loc_software_breakpoint; | |
1093 | ||
1094 | if (new_type != bpt->loc_type) | |
1095 | { | |
1096 | static int said = 0; | |
1097 | bpt->loc_type = new_type; | |
1098 | if (!said) | |
1099 | { | |
1100 | fprintf_filtered (gdb_stdout, _("\ | |
0767c96d | 1101 | Note: automatically using hardware breakpoints for read-only addresses.\n")); |
765dc015 VP |
1102 | said = 1; |
1103 | } | |
1104 | } | |
1105 | } | |
1106 | else if (bpt->loc_type == bp_loc_software_breakpoint | |
1107 | && mr->attrib.mode != MEM_RW) | |
1108 | warning (_("cannot set software breakpoint at readonly address %s"), | |
1109 | paddr (bpt->address)); | |
1110 | } | |
1111 | } | |
1112 | ||
879bfdc2 DJ |
1113 | /* First check to see if we have to handle an overlay. */ |
1114 | if (overlay_debugging == ovly_off | |
1115 | || bpt->section == NULL | |
1116 | || !(section_is_overlay (bpt->section))) | |
1117 | { | |
1118 | /* No overlay handling: just set the breakpoint. */ | |
1119 | ||
1120 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8181d85f | 1121 | val = target_insert_hw_breakpoint (&bpt->target_info); |
879bfdc2 | 1122 | else |
8181d85f | 1123 | val = target_insert_breakpoint (&bpt->target_info); |
879bfdc2 DJ |
1124 | } |
1125 | else | |
1126 | { | |
1127 | /* This breakpoint is in an overlay section. | |
1128 | Shall we set a breakpoint at the LMA? */ | |
1129 | if (!overlay_events_enabled) | |
1130 | { | |
1131 | /* Yes -- overlay event support is not active, | |
1132 | so we must try to set a breakpoint at the LMA. | |
1133 | This will not work for a hardware breakpoint. */ | |
1134 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8a3fe4f8 | 1135 | warning (_("hardware breakpoint %d not supported in overlay!"), |
879bfdc2 DJ |
1136 | bpt->owner->number); |
1137 | else | |
1138 | { | |
1139 | CORE_ADDR addr = overlay_unmapped_address (bpt->address, | |
1140 | bpt->section); | |
1141 | /* Set a software (trap) breakpoint at the LMA. */ | |
8181d85f DJ |
1142 | bpt->overlay_target_info = bpt->target_info; |
1143 | bpt->overlay_target_info.placed_address = addr; | |
1144 | val = target_insert_breakpoint (&bpt->overlay_target_info); | |
879bfdc2 DJ |
1145 | if (val != 0) |
1146 | fprintf_unfiltered (tmp_error_stream, | |
1147 | "Overlay breakpoint %d failed: in ROM?", | |
1148 | bpt->owner->number); | |
1149 | } | |
1150 | } | |
1151 | /* Shall we set a breakpoint at the VMA? */ | |
1152 | if (section_is_mapped (bpt->section)) | |
1153 | { | |
1154 | /* Yes. This overlay section is mapped into memory. */ | |
1155 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
8181d85f | 1156 | val = target_insert_hw_breakpoint (&bpt->target_info); |
879bfdc2 | 1157 | else |
8181d85f | 1158 | val = target_insert_breakpoint (&bpt->target_info); |
879bfdc2 DJ |
1159 | } |
1160 | else | |
1161 | { | |
1162 | /* No. This breakpoint will not be inserted. | |
1163 | No error, but do not mark the bp as 'inserted'. */ | |
1164 | return 0; | |
1165 | } | |
1166 | } | |
1167 | ||
1168 | if (val) | |
1169 | { | |
1170 | /* Can't set the breakpoint. */ | |
9bbf65bb | 1171 | if (solib_address (bpt->address)) |
879bfdc2 DJ |
1172 | { |
1173 | /* See also: disable_breakpoints_in_shlibs. */ | |
1174 | val = 0; | |
0d381245 | 1175 | bpt->shlib_disabled = 1; |
879bfdc2 DJ |
1176 | if (!*disabled_breaks) |
1177 | { | |
1178 | fprintf_unfiltered (tmp_error_stream, | |
1179 | "Cannot insert breakpoint %d.\n", | |
1180 | bpt->owner->number); | |
1181 | fprintf_unfiltered (tmp_error_stream, | |
1182 | "Temporarily disabling shared library breakpoints:\n"); | |
1183 | } | |
1184 | *disabled_breaks = 1; | |
1185 | fprintf_unfiltered (tmp_error_stream, | |
1186 | "breakpoint #%d\n", bpt->owner->number); | |
1187 | } | |
1188 | else | |
879bfdc2 DJ |
1189 | { |
1190 | #ifdef ONE_PROCESS_WRITETEXT | |
1191 | *process_warning = 1; | |
1192 | #endif | |
1193 | if (bpt->loc_type == bp_loc_hardware_breakpoint) | |
1194 | { | |
1195 | *hw_breakpoint_error = 1; | |
1196 | fprintf_unfiltered (tmp_error_stream, | |
1197 | "Cannot insert hardware breakpoint %d.\n", | |
1198 | bpt->owner->number); | |
1199 | } | |
1200 | else | |
1201 | { | |
1202 | fprintf_unfiltered (tmp_error_stream, | |
1203 | "Cannot insert breakpoint %d.\n", | |
1204 | bpt->owner->number); | |
1205 | fprintf_filtered (tmp_error_stream, | |
1206 | "Error accessing memory address "); | |
ed49a04f | 1207 | fputs_filtered (paddress (bpt->address), tmp_error_stream); |
879bfdc2 DJ |
1208 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1209 | safe_strerror (val)); | |
1210 | } | |
1211 | ||
1212 | } | |
1213 | } | |
1214 | else | |
1215 | bpt->inserted = 1; | |
1216 | ||
1217 | return val; | |
1218 | } | |
1219 | ||
1220 | else if (bpt->loc_type == bp_loc_hardware_watchpoint | |
1221 | /* NOTE drow/2003-09-08: This state only exists for removing | |
1222 | watchpoints. It's not clear that it's necessary... */ | |
1223 | && bpt->owner->disposition != disp_del_at_next_stop) | |
1224 | { | |
a5606eee VP |
1225 | val = target_insert_watchpoint (bpt->address, |
1226 | bpt->length, | |
1227 | bpt->watchpoint_type); | |
1228 | bpt->inserted = (val != -1); | |
879bfdc2 DJ |
1229 | } |
1230 | ||
fe798b75 | 1231 | else if (bpt->owner->type == bp_catchpoint) |
879bfdc2 | 1232 | { |
71fff37b AC |
1233 | struct gdb_exception e = catch_exception (uiout, insert_catchpoint, |
1234 | bpt->owner, RETURN_MASK_ERROR); | |
9cbc821d AC |
1235 | exception_fprintf (gdb_stderr, e, "warning: inserting catchpoint %d: ", |
1236 | bpt->owner->number); | |
1237 | if (e.reason < 0) | |
879bfdc2 DJ |
1238 | bpt->owner->enable_state = bp_disabled; |
1239 | else | |
1240 | bpt->inserted = 1; | |
1640b821 DJ |
1241 | |
1242 | /* We've already printed an error message if there was a problem | |
1243 | inserting this catchpoint, and we've disabled the catchpoint, | |
1244 | so just return success. */ | |
1245 | return 0; | |
879bfdc2 DJ |
1246 | } |
1247 | ||
1248 | return 0; | |
1249 | } | |
1250 | ||
74960c60 VP |
1251 | /* Make sure all breakpoints are inserted in inferior. |
1252 | Throws exception on any error. | |
1253 | A breakpoint that is already inserted won't be inserted | |
1254 | again, so calling this function twice is safe. */ | |
1255 | void | |
1256 | insert_breakpoints (void) | |
1257 | { | |
1258 | struct breakpoint *bpt; | |
1259 | ||
1260 | ALL_BREAKPOINTS (bpt) | |
1261 | if (is_hardware_watchpoint (bpt)) | |
1262 | update_watchpoint (bpt, 0 /* don't reparse. */); | |
1263 | ||
b60e7edf | 1264 | update_global_location_list (1); |
74960c60 | 1265 | |
a12654ce | 1266 | if (!breakpoints_always_inserted_mode () && target_has_execution) |
74960c60 VP |
1267 | /* update_global_location_list does not insert breakpoints |
1268 | when always_inserted_mode is not enabled. Explicitly | |
1269 | insert them now. */ | |
1270 | insert_breakpoint_locations (); | |
1271 | } | |
1272 | ||
c906108c SS |
1273 | /* insert_breakpoints is used when starting or continuing the program. |
1274 | remove_breakpoints is used when the program stops. | |
1275 | Both return zero if successful, | |
1276 | or an `errno' value if could not write the inferior. */ | |
1277 | ||
74960c60 VP |
1278 | static void |
1279 | insert_breakpoint_locations (void) | |
c906108c | 1280 | { |
a5606eee | 1281 | struct breakpoint *bpt; |
879bfdc2 | 1282 | struct bp_location *b, *temp; |
e236ba44 | 1283 | int error = 0; |
c906108c SS |
1284 | int val = 0; |
1285 | int disabled_breaks = 0; | |
81d0cc19 GS |
1286 | int hw_breakpoint_error = 0; |
1287 | int process_warning = 0; | |
c906108c | 1288 | |
81d0cc19 GS |
1289 | struct ui_file *tmp_error_stream = mem_fileopen (); |
1290 | make_cleanup_ui_file_delete (tmp_error_stream); | |
74960c60 | 1291 | |
81d0cc19 GS |
1292 | /* Explicitly mark the warning -- this will only be printed if |
1293 | there was an error. */ | |
1294 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
a5606eee | 1295 | |
879bfdc2 DJ |
1296 | ALL_BP_LOCATIONS_SAFE (b, temp) |
1297 | { | |
74960c60 | 1298 | if (!should_be_inserted (b) || b->inserted) |
879bfdc2 DJ |
1299 | continue; |
1300 | ||
f365de73 AS |
1301 | /* There is no point inserting thread-specific breakpoints if the |
1302 | thread no longer exists. */ | |
1303 | if (b->owner->thread != -1 | |
1304 | && !valid_thread_id (b->owner->thread)) | |
1305 | continue; | |
1306 | ||
879bfdc2 DJ |
1307 | val = insert_bp_location (b, tmp_error_stream, |
1308 | &disabled_breaks, &process_warning, | |
1309 | &hw_breakpoint_error); | |
1310 | if (val) | |
e236ba44 | 1311 | error = val; |
879bfdc2 | 1312 | } |
c906108c | 1313 | |
a5606eee VP |
1314 | /* If we failed to insert all locations of a watchpoint, |
1315 | remove them, as half-inserted watchpoint is of limited use. */ | |
1316 | ALL_BREAKPOINTS (bpt) | |
1317 | { | |
1318 | int some_failed = 0; | |
1319 | struct bp_location *loc; | |
1320 | ||
1321 | if (!is_hardware_watchpoint (bpt)) | |
1322 | continue; | |
1323 | ||
d6b74ac4 | 1324 | if (!breakpoint_enabled (bpt)) |
a5606eee | 1325 | continue; |
74960c60 VP |
1326 | |
1327 | if (bpt->disposition == disp_del_at_next_stop) | |
1328 | continue; | |
a5606eee VP |
1329 | |
1330 | for (loc = bpt->loc; loc; loc = loc->next) | |
1331 | if (!loc->inserted) | |
1332 | { | |
1333 | some_failed = 1; | |
1334 | break; | |
1335 | } | |
1336 | if (some_failed) | |
1337 | { | |
1338 | for (loc = bpt->loc; loc; loc = loc->next) | |
1339 | if (loc->inserted) | |
1340 | remove_breakpoint (loc, mark_uninserted); | |
1341 | ||
1342 | hw_breakpoint_error = 1; | |
1343 | fprintf_unfiltered (tmp_error_stream, | |
1344 | "Could not insert hardware watchpoint %d.\n", | |
1345 | bpt->number); | |
1346 | error = -1; | |
1347 | } | |
1348 | } | |
1349 | ||
e236ba44 | 1350 | if (error) |
81d0cc19 GS |
1351 | { |
1352 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
1353 | message about possibly exhausted resources. */ | |
879bfdc2 | 1354 | if (hw_breakpoint_error) |
81d0cc19 | 1355 | { |
c6510018 MS |
1356 | fprintf_unfiltered (tmp_error_stream, |
1357 | "Could not insert hardware breakpoints:\n\ | |
1358 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 1359 | } |
c6510018 | 1360 | #ifdef ONE_PROCESS_WRITETEXT |
81d0cc19 | 1361 | if (process_warning) |
c6510018 MS |
1362 | fprintf_unfiltered (tmp_error_stream, |
1363 | "The same program may be running in another process."); | |
1364 | #endif | |
81d0cc19 GS |
1365 | target_terminal_ours_for_output (); |
1366 | error_stream (tmp_error_stream); | |
1367 | } | |
c906108c SS |
1368 | } |
1369 | ||
c906108c | 1370 | int |
fba45db2 | 1371 | remove_breakpoints (void) |
c906108c | 1372 | { |
0bde7532 | 1373 | struct bp_location *b; |
c906108c SS |
1374 | int val; |
1375 | ||
0bde7532 | 1376 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1377 | { |
0bde7532 | 1378 | if (b->inserted) |
c5aa993b JM |
1379 | { |
1380 | val = remove_breakpoint (b, mark_uninserted); | |
1381 | if (val != 0) | |
1382 | return val; | |
1383 | } | |
1384 | } | |
c906108c SS |
1385 | return 0; |
1386 | } | |
1387 | ||
692590c1 | 1388 | int |
80ce1ecb | 1389 | remove_hw_watchpoints (void) |
692590c1 | 1390 | { |
0bde7532 | 1391 | struct bp_location *b; |
692590c1 MS |
1392 | int val; |
1393 | ||
0bde7532 | 1394 | ALL_BP_LOCATIONS (b) |
692590c1 | 1395 | { |
0bde7532 | 1396 | if (b->inserted && b->loc_type == bp_loc_hardware_watchpoint) |
692590c1 MS |
1397 | { |
1398 | val = remove_breakpoint (b, mark_uninserted); | |
1399 | if (val != 0) | |
1400 | return val; | |
1401 | } | |
1402 | } | |
1403 | return 0; | |
1404 | } | |
1405 | ||
c906108c | 1406 | int |
fba45db2 | 1407 | reattach_breakpoints (int pid) |
c906108c | 1408 | { |
0bde7532 | 1409 | struct bp_location *b; |
c906108c | 1410 | int val; |
ce696e05 | 1411 | struct cleanup *old_chain = save_inferior_ptid (); |
a4954f26 DJ |
1412 | struct ui_file *tmp_error_stream = mem_fileopen (); |
1413 | int dummy1 = 0, dummy2 = 0, dummy3 = 0; | |
1414 | ||
1415 | make_cleanup_ui_file_delete (tmp_error_stream); | |
c906108c | 1416 | |
ce696e05 | 1417 | inferior_ptid = pid_to_ptid (pid); |
0bde7532 | 1418 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1419 | { |
0bde7532 | 1420 | if (b->inserted) |
c5aa993b | 1421 | { |
a4954f26 DJ |
1422 | b->inserted = 0; |
1423 | val = insert_bp_location (b, tmp_error_stream, | |
1424 | &dummy1, &dummy2, &dummy3); | |
c5aa993b JM |
1425 | if (val != 0) |
1426 | { | |
ce696e05 | 1427 | do_cleanups (old_chain); |
c5aa993b JM |
1428 | return val; |
1429 | } | |
1430 | } | |
1431 | } | |
ce696e05 | 1432 | do_cleanups (old_chain); |
c906108c SS |
1433 | return 0; |
1434 | } | |
1435 | ||
1436 | void | |
fba45db2 | 1437 | update_breakpoints_after_exec (void) |
c906108c | 1438 | { |
c5aa993b JM |
1439 | struct breakpoint *b; |
1440 | struct breakpoint *temp; | |
25b22b0a | 1441 | struct bp_location *bploc; |
c906108c | 1442 | |
25b22b0a PA |
1443 | /* We're about to delete breakpoints from GDB's lists. If the |
1444 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
1445 | writing the breakpoints' "shadow contents" back into memory. The | |
1446 | "shadow contents" are NOT valid after an exec, so GDB should not | |
1447 | do that. Instead, the target is responsible from marking | |
1448 | breakpoints out as soon as it detects an exec. We don't do that | |
1449 | here instead, because there may be other attempts to delete | |
1450 | breakpoints after detecting an exec and before reaching here. */ | |
1451 | ALL_BP_LOCATIONS (bploc) | |
1452 | gdb_assert (!bploc->inserted); | |
c906108c SS |
1453 | |
1454 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b JM |
1455 | { |
1456 | /* Solib breakpoints must be explicitly reset after an exec(). */ | |
1457 | if (b->type == bp_shlib_event) | |
1458 | { | |
1459 | delete_breakpoint (b); | |
1460 | continue; | |
1461 | } | |
c906108c | 1462 | |
1900040c MS |
1463 | /* Thread event breakpoints must be set anew after an exec(), |
1464 | as must overlay event breakpoints. */ | |
1465 | if (b->type == bp_thread_event || b->type == bp_overlay_event) | |
c4093a6a JM |
1466 | { |
1467 | delete_breakpoint (b); | |
1468 | continue; | |
1469 | } | |
1470 | ||
c5aa993b JM |
1471 | /* Step-resume breakpoints are meaningless after an exec(). */ |
1472 | if (b->type == bp_step_resume) | |
1473 | { | |
1474 | delete_breakpoint (b); | |
1475 | continue; | |
1476 | } | |
1477 | ||
611c83ae PA |
1478 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
1479 | after an exec. */ | |
1480 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume) | |
1481 | { | |
1482 | delete_breakpoint (b); | |
1483 | continue; | |
1484 | } | |
1485 | ||
ce78b96d JB |
1486 | if (b->type == bp_catchpoint) |
1487 | { | |
1488 | /* For now, none of the bp_catchpoint breakpoints need to | |
1489 | do anything at this point. In the future, if some of | |
1490 | the catchpoints need to something, we will need to add | |
1491 | a new method, and call this method from here. */ | |
1492 | continue; | |
1493 | } | |
1494 | ||
c5aa993b JM |
1495 | /* bp_finish is a special case. The only way we ought to be able |
1496 | to see one of these when an exec() has happened, is if the user | |
1497 | caught a vfork, and then said "finish". Ordinarily a finish just | |
1498 | carries them to the call-site of the current callee, by setting | |
1499 | a temporary bp there and resuming. But in this case, the finish | |
1500 | will carry them entirely through the vfork & exec. | |
1501 | ||
1502 | We don't want to allow a bp_finish to remain inserted now. But | |
1503 | we can't safely delete it, 'cause finish_command has a handle to | |
1504 | the bp on a bpstat, and will later want to delete it. There's a | |
1505 | chance (and I've seen it happen) that if we delete the bp_finish | |
1506 | here, that its storage will get reused by the time finish_command | |
1507 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
1508 | We really must allow finish_command to delete a bp_finish. | |
1509 | ||
53a5351d JM |
1510 | In the absense of a general solution for the "how do we know |
1511 | it's safe to delete something others may have handles to?" | |
1512 | problem, what we'll do here is just uninsert the bp_finish, and | |
1513 | let finish_command delete it. | |
1514 | ||
1515 | (We know the bp_finish is "doomed" in the sense that it's | |
1516 | momentary, and will be deleted as soon as finish_command sees | |
1517 | the inferior stopped. So it doesn't matter that the bp's | |
1518 | address is probably bogus in the new a.out, unlike e.g., the | |
1519 | solib breakpoints.) */ | |
c5aa993b | 1520 | |
c5aa993b JM |
1521 | if (b->type == bp_finish) |
1522 | { | |
1523 | continue; | |
1524 | } | |
1525 | ||
1526 | /* Without a symbolic address, we have little hope of the | |
1527 | pre-exec() address meaning the same thing in the post-exec() | |
1528 | a.out. */ | |
1529 | if (b->addr_string == NULL) | |
1530 | { | |
1531 | delete_breakpoint (b); | |
1532 | continue; | |
1533 | } | |
c5aa993b | 1534 | } |
1900040c MS |
1535 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
1536 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
1537 | } |
1538 | ||
1539 | int | |
fba45db2 | 1540 | detach_breakpoints (int pid) |
c906108c | 1541 | { |
0bde7532 | 1542 | struct bp_location *b; |
c906108c | 1543 | int val; |
ce696e05 | 1544 | struct cleanup *old_chain = save_inferior_ptid (); |
c5aa993b | 1545 | |
39f77062 | 1546 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 1547 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 1548 | |
ce696e05 KB |
1549 | /* Set inferior_ptid; remove_breakpoint uses this global. */ |
1550 | inferior_ptid = pid_to_ptid (pid); | |
0bde7532 | 1551 | ALL_BP_LOCATIONS (b) |
c5aa993b | 1552 | { |
0bde7532 | 1553 | if (b->inserted) |
c5aa993b JM |
1554 | { |
1555 | val = remove_breakpoint (b, mark_inserted); | |
1556 | if (val != 0) | |
1557 | { | |
ce696e05 | 1558 | do_cleanups (old_chain); |
c5aa993b JM |
1559 | return val; |
1560 | } | |
1561 | } | |
1562 | } | |
ce696e05 | 1563 | do_cleanups (old_chain); |
c906108c SS |
1564 | return 0; |
1565 | } | |
1566 | ||
1567 | static int | |
0bde7532 | 1568 | remove_breakpoint (struct bp_location *b, insertion_state_t is) |
c906108c SS |
1569 | { |
1570 | int val; | |
c5aa993b | 1571 | |
0bde7532 | 1572 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
1573 | /* Permanent breakpoints cannot be inserted or removed. */ |
1574 | return 0; | |
1575 | ||
74960c60 VP |
1576 | /* The type of none suggests that owner is actually deleted. |
1577 | This should not ever happen. */ | |
1578 | gdb_assert (b->owner->type != bp_none); | |
0bde7532 DJ |
1579 | |
1580 | if (b->loc_type == bp_loc_software_breakpoint | |
1581 | || b->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 1582 | { |
c02f5703 MS |
1583 | /* "Normal" instruction breakpoint: either the standard |
1584 | trap-instruction bp (bp_breakpoint), or a | |
1585 | bp_hardware_breakpoint. */ | |
1586 | ||
1587 | /* First check to see if we have to handle an overlay. */ | |
1588 | if (overlay_debugging == ovly_off | |
0bde7532 DJ |
1589 | || b->section == NULL |
1590 | || !(section_is_overlay (b->section))) | |
c02f5703 MS |
1591 | { |
1592 | /* No overlay handling: just remove the breakpoint. */ | |
1593 | ||
0bde7532 | 1594 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1595 | val = target_remove_hw_breakpoint (&b->target_info); |
c02f5703 | 1596 | else |
8181d85f | 1597 | val = target_remove_breakpoint (&b->target_info); |
c02f5703 | 1598 | } |
c906108c SS |
1599 | else |
1600 | { | |
c02f5703 MS |
1601 | /* This breakpoint is in an overlay section. |
1602 | Did we set a breakpoint at the LMA? */ | |
1603 | if (!overlay_events_enabled) | |
1604 | { | |
1605 | /* Yes -- overlay event support is not active, so we | |
1606 | should have set a breakpoint at the LMA. Remove it. | |
1607 | */ | |
c02f5703 MS |
1608 | /* Ignore any failures: if the LMA is in ROM, we will |
1609 | have already warned when we failed to insert it. */ | |
0bde7532 | 1610 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1611 | target_remove_hw_breakpoint (&b->overlay_target_info); |
c02f5703 | 1612 | else |
8181d85f | 1613 | target_remove_breakpoint (&b->overlay_target_info); |
c02f5703 MS |
1614 | } |
1615 | /* Did we set a breakpoint at the VMA? | |
1616 | If so, we will have marked the breakpoint 'inserted'. */ | |
0bde7532 | 1617 | if (b->inserted) |
c906108c | 1618 | { |
c02f5703 MS |
1619 | /* Yes -- remove it. Previously we did not bother to |
1620 | remove the breakpoint if the section had been | |
1621 | unmapped, but let's not rely on that being safe. We | |
1622 | don't know what the overlay manager might do. */ | |
0bde7532 | 1623 | if (b->loc_type == bp_loc_hardware_breakpoint) |
8181d85f | 1624 | val = target_remove_hw_breakpoint (&b->target_info); |
aa67235e UW |
1625 | |
1626 | /* However, we should remove *software* breakpoints only | |
1627 | if the section is still mapped, or else we overwrite | |
1628 | wrong code with the saved shadow contents. */ | |
1629 | else if (section_is_mapped (b->section)) | |
8181d85f | 1630 | val = target_remove_breakpoint (&b->target_info); |
aa67235e UW |
1631 | else |
1632 | val = 0; | |
c906108c | 1633 | } |
c02f5703 MS |
1634 | else |
1635 | { | |
1636 | /* No -- not inserted, so no need to remove. No error. */ | |
1637 | val = 0; | |
1638 | } | |
c906108c | 1639 | } |
879d1e6b UW |
1640 | |
1641 | /* In some cases, we might not be able to remove a breakpoint | |
1642 | in a shared library that has already been removed, but we | |
1643 | have not yet processed the shlib unload event. */ | |
1644 | if (val && solib_address (b->address)) | |
1645 | val = 0; | |
1646 | ||
c906108c SS |
1647 | if (val) |
1648 | return val; | |
0bde7532 | 1649 | b->inserted = (is == mark_inserted); |
c906108c | 1650 | } |
a5606eee | 1651 | else if (b->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 1652 | { |
278cd55f AC |
1653 | struct value *v; |
1654 | struct value *n; | |
c5aa993b | 1655 | |
0bde7532 | 1656 | b->inserted = (is == mark_inserted); |
a5606eee VP |
1657 | val = target_remove_watchpoint (b->address, b->length, |
1658 | b->watchpoint_type); | |
2e70b7b9 | 1659 | |
c906108c | 1660 | /* Failure to remove any of the hardware watchpoints comes here. */ |
0bde7532 | 1661 | if ((is == mark_uninserted) && (b->inserted)) |
8a3fe4f8 | 1662 | warning (_("Could not remove hardware watchpoint %d."), |
0bde7532 | 1663 | b->owner->number); |
c906108c | 1664 | } |
ce78b96d JB |
1665 | else if (b->owner->type == bp_catchpoint |
1666 | && breakpoint_enabled (b->owner) | |
1667 | && !b->duplicate) | |
1668 | { | |
1669 | gdb_assert (b->owner->ops != NULL && b->owner->ops->remove != NULL); | |
1670 | ||
1671 | val = b->owner->ops->remove (b->owner); | |
1672 | if (val) | |
1673 | return val; | |
1674 | b->inserted = (is == mark_inserted); | |
1675 | } | |
c906108c SS |
1676 | |
1677 | return 0; | |
1678 | } | |
1679 | ||
1680 | /* Clear the "inserted" flag in all breakpoints. */ | |
1681 | ||
25b22b0a | 1682 | void |
fba45db2 | 1683 | mark_breakpoints_out (void) |
c906108c | 1684 | { |
075f6582 | 1685 | struct bp_location *bpt; |
c906108c | 1686 | |
075f6582 DJ |
1687 | ALL_BP_LOCATIONS (bpt) |
1688 | bpt->inserted = 0; | |
c906108c SS |
1689 | } |
1690 | ||
53a5351d JM |
1691 | /* Clear the "inserted" flag in all breakpoints and delete any |
1692 | breakpoints which should go away between runs of the program. | |
c906108c SS |
1693 | |
1694 | Plus other such housekeeping that has to be done for breakpoints | |
1695 | between runs. | |
1696 | ||
53a5351d JM |
1697 | Note: this function gets called at the end of a run (by |
1698 | generic_mourn_inferior) and when a run begins (by | |
1699 | init_wait_for_inferior). */ | |
c906108c SS |
1700 | |
1701 | ||
1702 | ||
1703 | void | |
fba45db2 | 1704 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 1705 | { |
52f0bd74 | 1706 | struct breakpoint *b, *temp; |
075f6582 | 1707 | struct bp_location *bpt; |
1c5cfe86 | 1708 | int ix; |
c906108c | 1709 | |
075f6582 | 1710 | ALL_BP_LOCATIONS (bpt) |
514f746b AR |
1711 | if (bpt->owner->enable_state != bp_permanent) |
1712 | bpt->inserted = 0; | |
075f6582 | 1713 | |
c906108c | 1714 | ALL_BREAKPOINTS_SAFE (b, temp) |
c5aa993b | 1715 | { |
c5aa993b JM |
1716 | switch (b->type) |
1717 | { | |
1718 | case bp_call_dummy: | |
1719 | case bp_watchpoint_scope: | |
c906108c | 1720 | |
c5aa993b JM |
1721 | /* If the call dummy breakpoint is at the entry point it will |
1722 | cause problems when the inferior is rerun, so we better | |
1723 | get rid of it. | |
c906108c | 1724 | |
c5aa993b JM |
1725 | Also get rid of scope breakpoints. */ |
1726 | delete_breakpoint (b); | |
1727 | break; | |
c906108c | 1728 | |
c5aa993b JM |
1729 | case bp_watchpoint: |
1730 | case bp_hardware_watchpoint: | |
1731 | case bp_read_watchpoint: | |
1732 | case bp_access_watchpoint: | |
c906108c | 1733 | |
c5aa993b JM |
1734 | /* Likewise for watchpoints on local expressions. */ |
1735 | if (b->exp_valid_block != NULL) | |
1736 | delete_breakpoint (b); | |
967af18d | 1737 | else if (context == inf_starting) |
c860120c PM |
1738 | { |
1739 | /* Reset val field to force reread of starting value | |
1740 | in insert_breakpoints. */ | |
1741 | if (b->val) | |
1742 | value_free (b->val); | |
1743 | b->val = NULL; | |
fa4727a6 | 1744 | b->val_valid = 0; |
c860120c | 1745 | } |
c5aa993b JM |
1746 | break; |
1747 | default: | |
c5aa993b JM |
1748 | break; |
1749 | } | |
1750 | } | |
1c5cfe86 PA |
1751 | |
1752 | /* Get rid of the moribund locations. */ | |
1753 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bpt); ++ix) | |
1754 | free_bp_location (bpt); | |
1755 | VEC_free (bp_location_p, moribund_locations); | |
c906108c SS |
1756 | } |
1757 | ||
c2c6d25f JM |
1758 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
1759 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
1760 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
1761 | permanent breakpoint. | |
1762 | - When continuing from a location with an ordinary breakpoint, we | |
1763 | actually single step once before calling insert_breakpoints. | |
1764 | - When continuing from a localion with a permanent breakpoint, we | |
1765 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by | |
1766 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 1767 | |
c2c6d25f | 1768 | enum breakpoint_here |
fba45db2 | 1769 | breakpoint_here_p (CORE_ADDR pc) |
c906108c | 1770 | { |
89f9893c | 1771 | const struct bp_location *bpt; |
c2c6d25f | 1772 | int any_breakpoint_here = 0; |
c906108c | 1773 | |
075f6582 DJ |
1774 | ALL_BP_LOCATIONS (bpt) |
1775 | { | |
1776 | if (bpt->loc_type != bp_loc_software_breakpoint | |
1777 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1778 | continue; | |
1779 | ||
468d015d | 1780 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1781 | || bpt->owner->enable_state == bp_permanent) |
1782 | && bpt->address == pc) /* bp is enabled and matches pc */ | |
1783 | { | |
1784 | if (overlay_debugging | |
1785 | && section_is_overlay (bpt->section) | |
1786 | && !section_is_mapped (bpt->section)) | |
1787 | continue; /* unmapped overlay -- can't be a match */ | |
1788 | else if (bpt->owner->enable_state == bp_permanent) | |
1789 | return permanent_breakpoint_here; | |
1790 | else | |
1791 | any_breakpoint_here = 1; | |
1792 | } | |
1793 | } | |
c906108c | 1794 | |
c2c6d25f | 1795 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
1796 | } |
1797 | ||
1c5cfe86 PA |
1798 | /* Return true if there's a moribund breakpoint at PC. */ |
1799 | ||
1800 | int | |
1801 | moribund_breakpoint_here_p (CORE_ADDR pc) | |
1802 | { | |
1803 | struct bp_location *loc; | |
1804 | int ix; | |
1805 | ||
1806 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
1807 | if (loc->address == pc) | |
1808 | return 1; | |
1809 | ||
1810 | return 0; | |
1811 | } | |
c2c6d25f | 1812 | |
c36b740a VP |
1813 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
1814 | inserted using regular breakpoint_chain/bp_location_chain mechanism. | |
1815 | This does not check for single-step breakpoints, which are | |
1816 | inserted and removed using direct target manipulation. */ | |
c906108c SS |
1817 | |
1818 | int | |
c36b740a | 1819 | regular_breakpoint_inserted_here_p (CORE_ADDR pc) |
c906108c | 1820 | { |
89f9893c | 1821 | const struct bp_location *bpt; |
c906108c | 1822 | |
075f6582 | 1823 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1824 | { |
075f6582 DJ |
1825 | if (bpt->loc_type != bp_loc_software_breakpoint |
1826 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1827 | continue; | |
1828 | ||
1829 | if (bpt->inserted | |
1830 | && bpt->address == pc) /* bp is inserted and matches pc */ | |
1831 | { | |
1832 | if (overlay_debugging | |
1833 | && section_is_overlay (bpt->section) | |
1834 | && !section_is_mapped (bpt->section)) | |
1835 | continue; /* unmapped overlay -- can't be a match */ | |
1836 | else | |
1837 | return 1; | |
1838 | } | |
c5aa993b | 1839 | } |
c36b740a VP |
1840 | return 0; |
1841 | } | |
1842 | ||
1843 | /* Returns non-zero iff there's either regular breakpoint | |
1844 | or a single step breakpoint inserted at PC. */ | |
1845 | ||
1846 | int | |
1847 | breakpoint_inserted_here_p (CORE_ADDR pc) | |
1848 | { | |
1849 | if (regular_breakpoint_inserted_here_p (pc)) | |
1850 | return 1; | |
c906108c | 1851 | |
1aafd4da UW |
1852 | if (single_step_breakpoint_inserted_here_p (pc)) |
1853 | return 1; | |
1854 | ||
c906108c SS |
1855 | return 0; |
1856 | } | |
1857 | ||
4fa8626c DJ |
1858 | /* This function returns non-zero iff there is a software breakpoint |
1859 | inserted at PC. */ | |
1860 | ||
1861 | int | |
1862 | software_breakpoint_inserted_here_p (CORE_ADDR pc) | |
1863 | { | |
89f9893c | 1864 | const struct bp_location *bpt; |
4fa8626c DJ |
1865 | int any_breakpoint_here = 0; |
1866 | ||
1867 | ALL_BP_LOCATIONS (bpt) | |
1868 | { | |
1869 | if (bpt->loc_type != bp_loc_software_breakpoint) | |
1870 | continue; | |
1871 | ||
0d381245 | 1872 | if (bpt->inserted |
4fa8626c DJ |
1873 | && bpt->address == pc) /* bp is enabled and matches pc */ |
1874 | { | |
1875 | if (overlay_debugging | |
1876 | && section_is_overlay (bpt->section) | |
1877 | && !section_is_mapped (bpt->section)) | |
1878 | continue; /* unmapped overlay -- can't be a match */ | |
1879 | else | |
1880 | return 1; | |
1881 | } | |
1882 | } | |
1883 | ||
1aafd4da UW |
1884 | /* Also check for software single-step breakpoints. */ |
1885 | if (single_step_breakpoint_inserted_here_p (pc)) | |
1886 | return 1; | |
1887 | ||
4fa8626c DJ |
1888 | return 0; |
1889 | } | |
1890 | ||
075f6582 DJ |
1891 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
1892 | PC is valid for process/thread PTID. */ | |
c906108c SS |
1893 | |
1894 | int | |
39f77062 | 1895 | breakpoint_thread_match (CORE_ADDR pc, ptid_t ptid) |
c906108c | 1896 | { |
89f9893c | 1897 | const struct bp_location *bpt; |
c906108c SS |
1898 | int thread; |
1899 | ||
39f77062 | 1900 | thread = pid_to_thread_id (ptid); |
c906108c | 1901 | |
075f6582 | 1902 | ALL_BP_LOCATIONS (bpt) |
c5aa993b | 1903 | { |
075f6582 DJ |
1904 | if (bpt->loc_type != bp_loc_software_breakpoint |
1905 | && bpt->loc_type != bp_loc_hardware_breakpoint) | |
1906 | continue; | |
1907 | ||
468d015d | 1908 | if ((breakpoint_enabled (bpt->owner) |
075f6582 DJ |
1909 | || bpt->owner->enable_state == bp_permanent) |
1910 | && bpt->address == pc | |
1911 | && (bpt->owner->thread == -1 || bpt->owner->thread == thread)) | |
1912 | { | |
1913 | if (overlay_debugging | |
1914 | && section_is_overlay (bpt->section) | |
1915 | && !section_is_mapped (bpt->section)) | |
1916 | continue; /* unmapped overlay -- can't be a match */ | |
1917 | else | |
1918 | return 1; | |
1919 | } | |
c5aa993b | 1920 | } |
c906108c SS |
1921 | |
1922 | return 0; | |
1923 | } | |
c906108c | 1924 | \f |
c5aa993b | 1925 | |
c906108c SS |
1926 | /* bpstat stuff. External routines' interfaces are documented |
1927 | in breakpoint.h. */ | |
1928 | ||
1929 | int | |
fba45db2 | 1930 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c | 1931 | { |
ce78b96d JB |
1932 | return (ep->type == bp_catchpoint) |
1933 | || (ep->type == bp_catch_load) | |
fe798b75 | 1934 | || (ep->type == bp_catch_unload); |
c906108c | 1935 | |
c5aa993b | 1936 | /* ??rehrauer: Add more kinds here, as are implemented... */ |
c906108c | 1937 | } |
c5aa993b | 1938 | |
c906108c | 1939 | int |
fba45db2 | 1940 | ep_is_shlib_catchpoint (struct breakpoint *ep) |
c906108c SS |
1941 | { |
1942 | return | |
1943 | (ep->type == bp_catch_load) | |
d85310f7 | 1944 | || (ep->type == bp_catch_unload); |
c906108c SS |
1945 | } |
1946 | ||
198757a8 VP |
1947 | void |
1948 | bpstat_free (bpstat bs) | |
1949 | { | |
1950 | if (bs->old_val != NULL) | |
1951 | value_free (bs->old_val); | |
1952 | free_command_lines (&bs->commands); | |
1953 | xfree (bs); | |
1954 | } | |
1955 | ||
c906108c SS |
1956 | /* Clear a bpstat so that it says we are not at any breakpoint. |
1957 | Also free any storage that is part of a bpstat. */ | |
1958 | ||
1959 | void | |
fba45db2 | 1960 | bpstat_clear (bpstat *bsp) |
c906108c SS |
1961 | { |
1962 | bpstat p; | |
1963 | bpstat q; | |
1964 | ||
1965 | if (bsp == 0) | |
1966 | return; | |
1967 | p = *bsp; | |
1968 | while (p != NULL) | |
1969 | { | |
1970 | q = p->next; | |
198757a8 | 1971 | bpstat_free (p); |
c906108c SS |
1972 | p = q; |
1973 | } | |
1974 | *bsp = NULL; | |
1975 | } | |
1976 | ||
1977 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
1978 | is part of the bpstat is copied as well. */ | |
1979 | ||
1980 | bpstat | |
fba45db2 | 1981 | bpstat_copy (bpstat bs) |
c906108c SS |
1982 | { |
1983 | bpstat p = NULL; | |
1984 | bpstat tmp; | |
1985 | bpstat retval = NULL; | |
1986 | ||
1987 | if (bs == NULL) | |
1988 | return bs; | |
1989 | ||
1990 | for (; bs != NULL; bs = bs->next) | |
1991 | { | |
1992 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
1993 | memcpy (tmp, bs, sizeof (*tmp)); | |
31cc81e9 DJ |
1994 | if (bs->commands != NULL) |
1995 | tmp->commands = copy_command_lines (bs->commands); | |
1996 | if (bs->old_val != NULL) | |
3c3185ac JK |
1997 | { |
1998 | tmp->old_val = value_copy (bs->old_val); | |
1999 | release_value (tmp->old_val); | |
2000 | } | |
31cc81e9 | 2001 | |
c906108c SS |
2002 | if (p == NULL) |
2003 | /* This is the first thing in the chain. */ | |
2004 | retval = tmp; | |
2005 | else | |
2006 | p->next = tmp; | |
2007 | p = tmp; | |
2008 | } | |
2009 | p->next = NULL; | |
2010 | return retval; | |
2011 | } | |
2012 | ||
2013 | /* Find the bpstat associated with this breakpoint */ | |
2014 | ||
2015 | bpstat | |
fba45db2 | 2016 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 2017 | { |
c5aa993b JM |
2018 | if (bsp == NULL) |
2019 | return NULL; | |
c906108c | 2020 | |
c5aa993b JM |
2021 | for (; bsp != NULL; bsp = bsp->next) |
2022 | { | |
4f8d1dc6 | 2023 | if (bsp->breakpoint_at && bsp->breakpoint_at->owner == breakpoint) |
c5aa993b JM |
2024 | return bsp; |
2025 | } | |
c906108c SS |
2026 | return NULL; |
2027 | } | |
2028 | ||
2029 | /* Find a step_resume breakpoint associated with this bpstat. | |
2030 | (If there are multiple step_resume bp's on the list, this function | |
2031 | will arbitrarily pick one.) | |
2032 | ||
2033 | It is an error to use this function if BPSTAT doesn't contain a | |
2034 | step_resume breakpoint. | |
2035 | ||
2036 | See wait_for_inferior's use of this function. */ | |
2037 | struct breakpoint * | |
fba45db2 | 2038 | bpstat_find_step_resume_breakpoint (bpstat bsp) |
c906108c | 2039 | { |
8601f500 MS |
2040 | int current_thread; |
2041 | ||
8a3fe4f8 | 2042 | gdb_assert (bsp != NULL); |
c906108c | 2043 | |
8601f500 MS |
2044 | current_thread = pid_to_thread_id (inferior_ptid); |
2045 | ||
c906108c SS |
2046 | for (; bsp != NULL; bsp = bsp->next) |
2047 | { | |
2048 | if ((bsp->breakpoint_at != NULL) && | |
4f8d1dc6 VP |
2049 | (bsp->breakpoint_at->owner->type == bp_step_resume) && |
2050 | (bsp->breakpoint_at->owner->thread == current_thread || | |
2051 | bsp->breakpoint_at->owner->thread == -1)) | |
2052 | return bsp->breakpoint_at->owner; | |
c906108c SS |
2053 | } |
2054 | ||
8a3fe4f8 | 2055 | internal_error (__FILE__, __LINE__, _("No step_resume breakpoint found.")); |
c906108c SS |
2056 | } |
2057 | ||
2058 | ||
8671a17b | 2059 | /* Put in *NUM the breakpoint number of the first breakpoint we are stopped |
c906108c SS |
2060 | at. *BSP upon return is a bpstat which points to the remaining |
2061 | breakpoints stopped at (but which is not guaranteed to be good for | |
2062 | anything but further calls to bpstat_num). | |
8671a17b PA |
2063 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
2064 | Return -1 if stopped at a breakpoint that has been deleted since | |
2065 | we set it. | |
2066 | Return 1 otherwise. */ | |
c906108c SS |
2067 | |
2068 | int | |
8671a17b | 2069 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
2070 | { |
2071 | struct breakpoint *b; | |
2072 | ||
2073 | if ((*bsp) == NULL) | |
2074 | return 0; /* No more breakpoint values */ | |
8671a17b | 2075 | |
4f8d1dc6 VP |
2076 | /* We assume we'll never have several bpstats that |
2077 | correspond to a single breakpoint -- otherwise, | |
2078 | this function might return the same number more | |
2079 | than once and this will look ugly. */ | |
2080 | b = (*bsp)->breakpoint_at ? (*bsp)->breakpoint_at->owner : NULL; | |
8671a17b PA |
2081 | *bsp = (*bsp)->next; |
2082 | if (b == NULL) | |
2083 | return -1; /* breakpoint that's been deleted since */ | |
2084 | ||
2085 | *num = b->number; /* We have its number */ | |
2086 | return 1; | |
c906108c SS |
2087 | } |
2088 | ||
2089 | /* Modify BS so that the actions will not be performed. */ | |
2090 | ||
2091 | void | |
fba45db2 | 2092 | bpstat_clear_actions (bpstat bs) |
c906108c SS |
2093 | { |
2094 | for (; bs != NULL; bs = bs->next) | |
2095 | { | |
c2b8ed2c | 2096 | free_command_lines (&bs->commands); |
c906108c SS |
2097 | if (bs->old_val != NULL) |
2098 | { | |
2099 | value_free (bs->old_val); | |
2100 | bs->old_val = NULL; | |
2101 | } | |
2102 | } | |
2103 | } | |
2104 | ||
2105 | /* Stub for cleaning up our state if we error-out of a breakpoint command */ | |
c906108c | 2106 | static void |
4efb68b1 | 2107 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
2108 | { |
2109 | executing_breakpoint_commands = 0; | |
2110 | } | |
2111 | ||
2112 | /* Execute all the commands associated with all the breakpoints at this | |
2113 | location. Any of these commands could cause the process to proceed | |
2114 | beyond this point, etc. We look out for such changes by checking | |
347bddb7 | 2115 | the global "breakpoint_proceeded" after each command. |
c906108c | 2116 | |
347bddb7 PA |
2117 | Returns true if a breakpoint command resumed the inferior. In that |
2118 | case, it is the caller's responsibility to recall it again with the | |
2119 | bpstat of the current thread. */ | |
2120 | ||
2121 | static int | |
2122 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
2123 | { |
2124 | bpstat bs; | |
2125 | struct cleanup *old_chain; | |
347bddb7 | 2126 | int again = 0; |
c906108c SS |
2127 | |
2128 | /* Avoid endless recursion if a `source' command is contained | |
2129 | in bs->commands. */ | |
2130 | if (executing_breakpoint_commands) | |
347bddb7 | 2131 | return 0; |
c906108c SS |
2132 | |
2133 | executing_breakpoint_commands = 1; | |
2134 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
2135 | ||
c906108c SS |
2136 | /* This pointer will iterate over the list of bpstat's. */ |
2137 | bs = *bsp; | |
2138 | ||
2139 | breakpoint_proceeded = 0; | |
2140 | for (; bs != NULL; bs = bs->next) | |
2141 | { | |
6c50ab1c JB |
2142 | struct command_line *cmd; |
2143 | struct cleanup *this_cmd_tree_chain; | |
2144 | ||
2145 | /* Take ownership of the BSP's command tree, if it has one. | |
2146 | ||
2147 | The command tree could legitimately contain commands like | |
2148 | 'step' and 'next', which call clear_proceed_status, which | |
2149 | frees stop_bpstat's command tree. To make sure this doesn't | |
2150 | free the tree we're executing out from under us, we need to | |
2151 | take ownership of the tree ourselves. Since a given bpstat's | |
2152 | commands are only executed once, we don't need to copy it; we | |
2153 | can clear the pointer in the bpstat, and make sure we free | |
2154 | the tree when we're done. */ | |
c906108c | 2155 | cmd = bs->commands; |
6c50ab1c JB |
2156 | bs->commands = 0; |
2157 | this_cmd_tree_chain = make_cleanup_free_command_lines (&cmd); | |
2158 | ||
c906108c SS |
2159 | while (cmd != NULL) |
2160 | { | |
2161 | execute_control_command (cmd); | |
2162 | ||
2163 | if (breakpoint_proceeded) | |
2164 | break; | |
2165 | else | |
2166 | cmd = cmd->next; | |
2167 | } | |
6c50ab1c JB |
2168 | |
2169 | /* We can free this command tree now. */ | |
2170 | do_cleanups (this_cmd_tree_chain); | |
2171 | ||
c906108c | 2172 | if (breakpoint_proceeded) |
32c1e744 VP |
2173 | { |
2174 | if (target_can_async_p ()) | |
347bddb7 PA |
2175 | /* If we are in async mode, then the target might be still |
2176 | running, not stopped at any breakpoint, so nothing for | |
2177 | us to do here -- just return to the event loop. */ | |
2178 | ; | |
32c1e744 VP |
2179 | else |
2180 | /* In sync mode, when execute_control_command returns | |
2181 | we're already standing on the next breakpoint. | |
347bddb7 PA |
2182 | Breakpoint commands for that stop were not run, since |
2183 | execute_command does not run breakpoint commands -- | |
2184 | only command_line_handler does, but that one is not | |
2185 | involved in execution of breakpoint commands. So, we | |
2186 | can now execute breakpoint commands. It should be | |
2187 | noted that making execute_command do bpstat actions is | |
2188 | not an option -- in this case we'll have recursive | |
2189 | invocation of bpstat for each breakpoint with a | |
2190 | command, and can easily blow up GDB stack. Instead, we | |
2191 | return true, which will trigger the caller to recall us | |
2192 | with the new stop_bpstat. */ | |
2193 | again = 1; | |
2194 | break; | |
32c1e744 | 2195 | } |
c906108c | 2196 | } |
c2b8ed2c | 2197 | do_cleanups (old_chain); |
347bddb7 PA |
2198 | return again; |
2199 | } | |
2200 | ||
2201 | void | |
2202 | bpstat_do_actions (void) | |
2203 | { | |
2204 | /* Do any commands attached to breakpoint we are stopped at. */ | |
2205 | while (!ptid_equal (inferior_ptid, null_ptid) | |
2206 | && target_has_execution | |
2207 | && !is_exited (inferior_ptid) | |
2208 | && !is_executing (inferior_ptid)) | |
2209 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
2210 | and only return when it is stopped at the next breakpoint, we | |
2211 | keep doing breakpoint actions until it returns false to | |
2212 | indicate the inferior was not resumed. */ | |
2213 | if (!bpstat_do_actions_1 (&inferior_thread ()->stop_bpstat)) | |
2214 | break; | |
c906108c SS |
2215 | } |
2216 | ||
fa4727a6 DJ |
2217 | /* Print out the (old or new) value associated with a watchpoint. */ |
2218 | ||
2219 | static void | |
2220 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
2221 | { | |
2222 | if (val == NULL) | |
2223 | fprintf_unfiltered (stream, _("<unreadable>")); | |
2224 | else | |
79a45b7d TT |
2225 | { |
2226 | struct value_print_options opts; | |
2227 | get_user_print_options (&opts); | |
2228 | value_print (val, stream, &opts); | |
2229 | } | |
fa4727a6 DJ |
2230 | } |
2231 | ||
e514a9d6 | 2232 | /* This is the normal print function for a bpstat. In the future, |
c906108c | 2233 | much of this logic could (should?) be moved to bpstat_stop_status, |
e514a9d6 JM |
2234 | by having it set different print_it values. |
2235 | ||
2236 | Current scheme: When we stop, bpstat_print() is called. It loops | |
2237 | through the bpstat list of things causing this stop, calling the | |
2238 | print_bp_stop_message function on each one. The behavior of the | |
2239 | print_bp_stop_message function depends on the print_it field of | |
2240 | bpstat. If such field so indicates, call this function here. | |
2241 | ||
2242 | Return values from this routine (ultimately used by bpstat_print() | |
2243 | and normal_stop() to decide what to do): | |
2244 | PRINT_NOTHING: Means we already printed all we needed to print, | |
2245 | don't print anything else. | |
2246 | PRINT_SRC_ONLY: Means we printed something, and we do *not* desire | |
2247 | that something to be followed by a location. | |
2248 | PRINT_SCR_AND_LOC: Means we printed something, and we *do* desire | |
2249 | that something to be followed by a location. | |
2250 | PRINT_UNKNOWN: Means we printed nothing or we need to do some more | |
2251 | analysis. */ | |
c906108c | 2252 | |
917317f4 | 2253 | static enum print_stop_action |
fba45db2 | 2254 | print_it_typical (bpstat bs) |
c906108c | 2255 | { |
3b31d625 | 2256 | struct cleanup *old_chain, *ui_out_chain; |
4f8d1dc6 | 2257 | struct breakpoint *b; |
89f9893c | 2258 | const struct bp_location *bl; |
8b93c638 | 2259 | struct ui_stream *stb; |
2cec12e5 | 2260 | int bp_temp = 0; |
8b93c638 | 2261 | stb = ui_out_stream_new (uiout); |
b02eeafb | 2262 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c SS |
2263 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
2264 | which has since been deleted. */ | |
e514a9d6 | 2265 | if (bs->breakpoint_at == NULL) |
917317f4 | 2266 | return PRINT_UNKNOWN; |
0d381245 VP |
2267 | bl = bs->breakpoint_at; |
2268 | b = bl->owner; | |
c906108c | 2269 | |
4f8d1dc6 | 2270 | switch (b->type) |
c906108c | 2271 | { |
e514a9d6 JM |
2272 | case bp_breakpoint: |
2273 | case bp_hardware_breakpoint: | |
2cec12e5 | 2274 | bp_temp = bs->breakpoint_at->owner->disposition == disp_del; |
0d381245 VP |
2275 | if (bl->address != bl->requested_address) |
2276 | breakpoint_adjustment_warning (bl->requested_address, | |
2277 | bl->address, | |
4f8d1dc6 VP |
2278 | b->number, 1); |
2279 | annotate_breakpoint (b->number); | |
2cec12e5 AR |
2280 | if (bp_temp) |
2281 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
2282 | else | |
2283 | ui_out_text (uiout, "\nBreakpoint "); | |
9dc5e2a9 | 2284 | if (ui_out_is_mi_like_p (uiout)) |
2cec12e5 AR |
2285 | { |
2286 | ui_out_field_string (uiout, "reason", | |
2287 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
2288 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
2289 | } | |
4f8d1dc6 | 2290 | ui_out_field_int (uiout, "bkptno", b->number); |
8b93c638 JM |
2291 | ui_out_text (uiout, ", "); |
2292 | return PRINT_SRC_AND_LOC; | |
e514a9d6 JM |
2293 | break; |
2294 | ||
2295 | case bp_shlib_event: | |
917317f4 JM |
2296 | /* Did we stop because the user set the stop_on_solib_events |
2297 | variable? (If so, we report this as a generic, "Stopped due | |
2298 | to shlib event" message.) */ | |
a3f17187 | 2299 | printf_filtered (_("Stopped due to shared library event\n")); |
e514a9d6 JM |
2300 | return PRINT_NOTHING; |
2301 | break; | |
2302 | ||
c4093a6a JM |
2303 | case bp_thread_event: |
2304 | /* Not sure how we will get here. | |
2305 | GDB should not stop for these breakpoints. */ | |
a3f17187 | 2306 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); |
c4093a6a JM |
2307 | return PRINT_NOTHING; |
2308 | break; | |
2309 | ||
1900040c MS |
2310 | case bp_overlay_event: |
2311 | /* By analogy with the thread event, GDB should not stop for these. */ | |
a3f17187 | 2312 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
1900040c MS |
2313 | return PRINT_NOTHING; |
2314 | break; | |
2315 | ||
e514a9d6 | 2316 | case bp_catch_load: |
4f8d1dc6 | 2317 | annotate_catchpoint (b->number); |
a3f17187 | 2318 | printf_filtered (_("\nCatchpoint %d (loaded %s), "), |
4f8d1dc6 VP |
2319 | b->number, |
2320 | b->triggered_dll_pathname); | |
e514a9d6 JM |
2321 | return PRINT_SRC_AND_LOC; |
2322 | break; | |
2323 | ||
2324 | case bp_catch_unload: | |
4f8d1dc6 | 2325 | annotate_catchpoint (b->number); |
a3f17187 | 2326 | printf_filtered (_("\nCatchpoint %d (unloaded %s), "), |
4f8d1dc6 VP |
2327 | b->number, |
2328 | b->triggered_dll_pathname); | |
e514a9d6 JM |
2329 | return PRINT_SRC_AND_LOC; |
2330 | break; | |
2331 | ||
e514a9d6 JM |
2332 | case bp_watchpoint: |
2333 | case bp_hardware_watchpoint: | |
fa4727a6 DJ |
2334 | annotate_watchpoint (b->number); |
2335 | if (ui_out_is_mi_like_p (uiout)) | |
2336 | ui_out_field_string | |
2337 | (uiout, "reason", | |
2338 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
2339 | mention (b); | |
2340 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
2341 | ui_out_text (uiout, "\nOld value = "); | |
2342 | watchpoint_value_print (bs->old_val, stb->stream); | |
2343 | ui_out_field_stream (uiout, "old", stb); | |
2344 | ui_out_text (uiout, "\nNew value = "); | |
2345 | watchpoint_value_print (b->val, stb->stream); | |
2346 | ui_out_field_stream (uiout, "new", stb); | |
2347 | do_cleanups (ui_out_chain); | |
2348 | ui_out_text (uiout, "\n"); | |
e514a9d6 JM |
2349 | /* More than one watchpoint may have been triggered. */ |
2350 | return PRINT_UNKNOWN; | |
2351 | break; | |
2352 | ||
2353 | case bp_read_watchpoint: | |
9dc5e2a9 | 2354 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2355 | ui_out_field_string |
2356 | (uiout, "reason", | |
2357 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 2358 | mention (b); |
3b31d625 | 2359 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 2360 | ui_out_text (uiout, "\nValue = "); |
fa4727a6 | 2361 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 2362 | ui_out_field_stream (uiout, "value", stb); |
3b31d625 | 2363 | do_cleanups (ui_out_chain); |
8b93c638 | 2364 | ui_out_text (uiout, "\n"); |
917317f4 | 2365 | return PRINT_UNKNOWN; |
e514a9d6 JM |
2366 | break; |
2367 | ||
2368 | case bp_access_watchpoint: | |
fa4727a6 | 2369 | if (bs->old_val != NULL) |
8b93c638 | 2370 | { |
4f8d1dc6 | 2371 | annotate_watchpoint (b->number); |
9dc5e2a9 | 2372 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2373 | ui_out_field_string |
2374 | (uiout, "reason", | |
2375 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
4f8d1dc6 | 2376 | mention (b); |
3b31d625 | 2377 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 | 2378 | ui_out_text (uiout, "\nOld value = "); |
fa4727a6 | 2379 | watchpoint_value_print (bs->old_val, stb->stream); |
8b93c638 | 2380 | ui_out_field_stream (uiout, "old", stb); |
8b93c638 JM |
2381 | ui_out_text (uiout, "\nNew value = "); |
2382 | } | |
2383 | else | |
2384 | { | |
4f8d1dc6 | 2385 | mention (b); |
9dc5e2a9 | 2386 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2387 | ui_out_field_string |
2388 | (uiout, "reason", | |
2389 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
3b31d625 | 2390 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "value"); |
8b93c638 JM |
2391 | ui_out_text (uiout, "\nValue = "); |
2392 | } | |
fa4727a6 | 2393 | watchpoint_value_print (b->val, stb->stream); |
8b93c638 | 2394 | ui_out_field_stream (uiout, "new", stb); |
3b31d625 | 2395 | do_cleanups (ui_out_chain); |
8b93c638 | 2396 | ui_out_text (uiout, "\n"); |
917317f4 | 2397 | return PRINT_UNKNOWN; |
e514a9d6 | 2398 | break; |
4ce44c66 | 2399 | |
e514a9d6 JM |
2400 | /* Fall through, we don't deal with these types of breakpoints |
2401 | here. */ | |
2402 | ||
11cf8741 | 2403 | case bp_finish: |
9dc5e2a9 | 2404 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2405 | ui_out_field_string |
2406 | (uiout, "reason", | |
2407 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
8b93c638 JM |
2408 | return PRINT_UNKNOWN; |
2409 | break; | |
2410 | ||
e514a9d6 | 2411 | case bp_until: |
9dc5e2a9 | 2412 | if (ui_out_is_mi_like_p (uiout)) |
1fbc2a49 NR |
2413 | ui_out_field_string |
2414 | (uiout, "reason", | |
2415 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
8b93c638 JM |
2416 | return PRINT_UNKNOWN; |
2417 | break; | |
2418 | ||
c2d11a7d | 2419 | case bp_none: |
e514a9d6 JM |
2420 | case bp_longjmp: |
2421 | case bp_longjmp_resume: | |
2422 | case bp_step_resume: | |
e514a9d6 JM |
2423 | case bp_watchpoint_scope: |
2424 | case bp_call_dummy: | |
2425 | default: | |
2426 | return PRINT_UNKNOWN; | |
2427 | } | |
2428 | } | |
2429 | ||
2430 | /* Generic routine for printing messages indicating why we | |
2431 | stopped. The behavior of this function depends on the value | |
2432 | 'print_it' in the bpstat structure. Under some circumstances we | |
2433 | may decide not to print anything here and delegate the task to | |
2434 | normal_stop(). */ | |
2435 | ||
2436 | static enum print_stop_action | |
2437 | print_bp_stop_message (bpstat bs) | |
2438 | { | |
2439 | switch (bs->print_it) | |
2440 | { | |
2441 | case print_it_noop: | |
2442 | /* Nothing should be printed for this bpstat entry. */ | |
2443 | return PRINT_UNKNOWN; | |
2444 | break; | |
2445 | ||
2446 | case print_it_done: | |
2447 | /* We still want to print the frame, but we already printed the | |
2448 | relevant messages. */ | |
2449 | return PRINT_SRC_AND_LOC; | |
2450 | break; | |
2451 | ||
2452 | case print_it_normal: | |
4f8d1dc6 | 2453 | { |
89f9893c | 2454 | const struct bp_location *bl = bs->breakpoint_at; |
4f8d1dc6 VP |
2455 | struct breakpoint *b = bl ? bl->owner : NULL; |
2456 | ||
2457 | /* Normal case. Call the breakpoint's print_it method, or | |
2458 | print_it_typical. */ | |
2459 | /* FIXME: how breakpoint can ever be NULL here? */ | |
2460 | if (b != NULL && b->ops != NULL && b->ops->print_it != NULL) | |
2461 | return b->ops->print_it (b); | |
2462 | else | |
2463 | return print_it_typical (bs); | |
2464 | } | |
2465 | break; | |
3086aeae | 2466 | |
e514a9d6 | 2467 | default: |
8e65ff28 | 2468 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 2469 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 2470 | break; |
c906108c | 2471 | } |
c906108c SS |
2472 | } |
2473 | ||
e514a9d6 JM |
2474 | /* Print a message indicating what happened. This is called from |
2475 | normal_stop(). The input to this routine is the head of the bpstat | |
2476 | list - a list of the eventpoints that caused this stop. This | |
2477 | routine calls the generic print routine for printing a message | |
2478 | about reasons for stopping. This will print (for example) the | |
2479 | "Breakpoint n," part of the output. The return value of this | |
2480 | routine is one of: | |
c906108c | 2481 | |
917317f4 JM |
2482 | PRINT_UNKNOWN: Means we printed nothing |
2483 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent | |
c5aa993b JM |
2484 | code to print the location. An example is |
2485 | "Breakpoint 1, " which should be followed by | |
2486 | the location. | |
917317f4 | 2487 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
2488 | to also print the location part of the message. |
2489 | An example is the catch/throw messages, which | |
917317f4 JM |
2490 | don't require a location appended to the end. |
2491 | PRINT_NOTHING: We have done some printing and we don't need any | |
2492 | further info to be printed.*/ | |
c906108c | 2493 | |
917317f4 | 2494 | enum print_stop_action |
fba45db2 | 2495 | bpstat_print (bpstat bs) |
c906108c SS |
2496 | { |
2497 | int val; | |
c5aa993b | 2498 | |
c906108c | 2499 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
2500 | (Currently all watchpoints go on the bpstat whether hit or not. |
2501 | That probably could (should) be changed, provided care is taken | |
c906108c | 2502 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
2503 | for (; bs; bs = bs->next) |
2504 | { | |
2505 | val = print_bp_stop_message (bs); | |
2506 | if (val == PRINT_SRC_ONLY | |
2507 | || val == PRINT_SRC_AND_LOC | |
2508 | || val == PRINT_NOTHING) | |
2509 | return val; | |
2510 | } | |
c906108c | 2511 | |
e514a9d6 JM |
2512 | /* We reached the end of the chain, or we got a null BS to start |
2513 | with and nothing was printed. */ | |
917317f4 | 2514 | return PRINT_UNKNOWN; |
c906108c SS |
2515 | } |
2516 | ||
2517 | /* Evaluate the expression EXP and return 1 if value is zero. | |
2518 | This is used inside a catch_errors to evaluate the breakpoint condition. | |
2519 | The argument is a "struct expression *" that has been cast to char * to | |
2520 | make it pass through catch_errors. */ | |
2521 | ||
2522 | static int | |
4efb68b1 | 2523 | breakpoint_cond_eval (void *exp) |
c906108c | 2524 | { |
278cd55f | 2525 | struct value *mark = value_mark (); |
c5aa993b | 2526 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
c906108c SS |
2527 | value_free_to_mark (mark); |
2528 | return i; | |
2529 | } | |
2530 | ||
2531 | /* Allocate a new bpstat and chain it to the current one. */ | |
2532 | ||
2533 | static bpstat | |
89f9893c | 2534 | bpstat_alloc (const struct bp_location *bl, bpstat cbs /* Current "bs" value */ ) |
c906108c SS |
2535 | { |
2536 | bpstat bs; | |
2537 | ||
2538 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
2539 | cbs->next = bs; | |
4f8d1dc6 | 2540 | bs->breakpoint_at = bl; |
c906108c SS |
2541 | /* If the condition is false, etc., don't do the commands. */ |
2542 | bs->commands = NULL; | |
2543 | bs->old_val = NULL; | |
2544 | bs->print_it = print_it_normal; | |
2545 | return bs; | |
2546 | } | |
2547 | \f | |
d983da9c DJ |
2548 | /* The target has stopped with waitstatus WS. Check if any hardware |
2549 | watchpoints have triggered, according to the target. */ | |
2550 | ||
2551 | int | |
2552 | watchpoints_triggered (struct target_waitstatus *ws) | |
2553 | { | |
2554 | int stopped_by_watchpoint = STOPPED_BY_WATCHPOINT (*ws); | |
2555 | CORE_ADDR addr; | |
2556 | struct breakpoint *b; | |
2557 | ||
2558 | if (!stopped_by_watchpoint) | |
2559 | { | |
2560 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
2561 | as not triggered. */ | |
2562 | ALL_BREAKPOINTS (b) | |
2563 | if (b->type == bp_hardware_watchpoint | |
2564 | || b->type == bp_read_watchpoint | |
2565 | || b->type == bp_access_watchpoint) | |
2566 | b->watchpoint_triggered = watch_triggered_no; | |
2567 | ||
2568 | return 0; | |
2569 | } | |
2570 | ||
2571 | if (!target_stopped_data_address (¤t_target, &addr)) | |
2572 | { | |
2573 | /* We were stopped by a watchpoint, but we don't know where. | |
2574 | Mark all watchpoints as unknown. */ | |
2575 | ALL_BREAKPOINTS (b) | |
2576 | if (b->type == bp_hardware_watchpoint | |
2577 | || b->type == bp_read_watchpoint | |
2578 | || b->type == bp_access_watchpoint) | |
2579 | b->watchpoint_triggered = watch_triggered_unknown; | |
2580 | ||
2581 | return stopped_by_watchpoint; | |
2582 | } | |
2583 | ||
2584 | /* The target could report the data address. Mark watchpoints | |
2585 | affected by this data address as triggered, and all others as not | |
2586 | triggered. */ | |
2587 | ||
2588 | ALL_BREAKPOINTS (b) | |
2589 | if (b->type == bp_hardware_watchpoint | |
2590 | || b->type == bp_read_watchpoint | |
2591 | || b->type == bp_access_watchpoint) | |
2592 | { | |
a5606eee | 2593 | struct bp_location *loc; |
d983da9c DJ |
2594 | struct value *v; |
2595 | ||
2596 | b->watchpoint_triggered = watch_triggered_no; | |
a5606eee VP |
2597 | for (loc = b->loc; loc; loc = loc->next) |
2598 | /* Exact match not required. Within range is | |
2599 | sufficient. */ | |
5009afc5 AS |
2600 | if (target_watchpoint_addr_within_range (¤t_target, |
2601 | addr, loc->address, | |
2602 | loc->length)) | |
a5606eee VP |
2603 | { |
2604 | b->watchpoint_triggered = watch_triggered_yes; | |
2605 | break; | |
2606 | } | |
d983da9c DJ |
2607 | } |
2608 | ||
2609 | return 1; | |
2610 | } | |
2611 | ||
c906108c SS |
2612 | /* Possible return values for watchpoint_check (this can't be an enum |
2613 | because of check_errors). */ | |
2614 | /* The watchpoint has been deleted. */ | |
2615 | #define WP_DELETED 1 | |
2616 | /* The value has changed. */ | |
2617 | #define WP_VALUE_CHANGED 2 | |
2618 | /* The value has not changed. */ | |
2619 | #define WP_VALUE_NOT_CHANGED 3 | |
2620 | ||
2621 | #define BP_TEMPFLAG 1 | |
2622 | #define BP_HARDWAREFLAG 2 | |
2623 | ||
2624 | /* Check watchpoint condition. */ | |
2625 | ||
2626 | static int | |
4efb68b1 | 2627 | watchpoint_check (void *p) |
c906108c SS |
2628 | { |
2629 | bpstat bs = (bpstat) p; | |
2630 | struct breakpoint *b; | |
2631 | struct frame_info *fr; | |
2632 | int within_current_scope; | |
2633 | ||
4f8d1dc6 | 2634 | b = bs->breakpoint_at->owner; |
c906108c SS |
2635 | |
2636 | if (b->exp_valid_block == NULL) | |
2637 | within_current_scope = 1; | |
2638 | else | |
2639 | { | |
2640 | /* There is no current frame at this moment. If we're going to have | |
c5aa993b JM |
2641 | any chance of handling watchpoints on local variables, we'll need |
2642 | the frame chain (so we can determine if we're in scope). */ | |
2643 | reinit_frame_cache (); | |
101dcfbe | 2644 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 2645 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
2646 | |
2647 | /* If we've gotten confused in the unwinder, we might have | |
2648 | returned a frame that can't describe this variable. */ | |
2649 | if (within_current_scope | |
7f0df278 DJ |
2650 | && (block_linkage_function (b->exp_valid_block) |
2651 | != get_frame_function (fr))) | |
69fbadd5 DJ |
2652 | within_current_scope = 0; |
2653 | ||
c12260ac CV |
2654 | /* in_function_epilogue_p() returns a non-zero value if we're still |
2655 | in the function but the stack frame has already been invalidated. | |
2656 | Since we can't rely on the values of local variables after the | |
2657 | stack has been destroyed, we are treating the watchpoint in that | |
a957e642 CV |
2658 | state as `not changed' without further checking. |
2659 | ||
2660 | vinschen/2003-09-04: The former implementation left out the case | |
2661 | that the watchpoint frame couldn't be found by frame_find_by_id() | |
2662 | because the current PC is currently in an epilogue. Calling | |
2663 | gdbarch_in_function_epilogue_p() also when fr == NULL fixes that. */ | |
a6fbcf2f | 2664 | if ((!within_current_scope || fr == get_current_frame ()) |
c12260ac CV |
2665 | && gdbarch_in_function_epilogue_p (current_gdbarch, read_pc ())) |
2666 | return WP_VALUE_NOT_CHANGED; | |
a6fbcf2f | 2667 | if (fr && within_current_scope) |
c906108c SS |
2668 | /* If we end up stopping, the current frame will get selected |
2669 | in normal_stop. So this call to select_frame won't affect | |
2670 | the user. */ | |
0f7d239c | 2671 | select_frame (fr); |
c906108c | 2672 | } |
c5aa993b | 2673 | |
c906108c SS |
2674 | if (within_current_scope) |
2675 | { | |
2676 | /* We use value_{,free_to_}mark because it could be a | |
2677 | *long* time before we return to the command level and | |
c5aa993b JM |
2678 | call free_all_values. We can't call free_all_values because |
2679 | we might be in the middle of evaluating a function call. */ | |
c906108c | 2680 | |
278cd55f | 2681 | struct value *mark = value_mark (); |
fa4727a6 DJ |
2682 | struct value *new_val; |
2683 | ||
2684 | fetch_watchpoint_value (b->exp, &new_val, NULL, NULL); | |
2685 | if ((b->val != NULL) != (new_val != NULL) | |
2686 | || (b->val != NULL && !value_equal (b->val, new_val))) | |
c906108c | 2687 | { |
fa4727a6 DJ |
2688 | if (new_val != NULL) |
2689 | { | |
2690 | release_value (new_val); | |
2691 | value_free_to_mark (mark); | |
2692 | } | |
c906108c SS |
2693 | bs->old_val = b->val; |
2694 | b->val = new_val; | |
fa4727a6 | 2695 | b->val_valid = 1; |
c906108c SS |
2696 | /* We will stop here */ |
2697 | return WP_VALUE_CHANGED; | |
2698 | } | |
2699 | else | |
2700 | { | |
2701 | /* Nothing changed, don't do anything. */ | |
2702 | value_free_to_mark (mark); | |
2703 | /* We won't stop here */ | |
2704 | return WP_VALUE_NOT_CHANGED; | |
2705 | } | |
2706 | } | |
2707 | else | |
2708 | { | |
2709 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
2710 | if we temporarily ignored the watchpoint, then when |
2711 | we reenter the block in which it is valid it contains | |
2712 | garbage (in the case of a function, it may have two | |
2713 | garbage values, one before and one after the prologue). | |
2714 | So we can't even detect the first assignment to it and | |
2715 | watch after that (since the garbage may or may not equal | |
2716 | the first value assigned). */ | |
4ce44c66 JM |
2717 | /* We print all the stop information in print_it_typical(), but |
2718 | in this case, by the time we call print_it_typical() this bp | |
2719 | will be deleted already. So we have no choice but print the | |
2720 | information here. */ | |
9dc5e2a9 | 2721 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
2722 | ui_out_field_string |
2723 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 2724 | ui_out_text (uiout, "\nWatchpoint "); |
4f8d1dc6 | 2725 | ui_out_field_int (uiout, "wpnum", b->number); |
8b93c638 JM |
2726 | ui_out_text (uiout, " deleted because the program has left the block in\n\ |
2727 | which its expression is valid.\n"); | |
4ce44c66 | 2728 | |
c906108c | 2729 | if (b->related_breakpoint) |
b5de0fa7 EZ |
2730 | b->related_breakpoint->disposition = disp_del_at_next_stop; |
2731 | b->disposition = disp_del_at_next_stop; | |
c906108c SS |
2732 | |
2733 | return WP_DELETED; | |
2734 | } | |
2735 | } | |
2736 | ||
18a18393 VP |
2737 | /* Return true if it looks like target has stopped due to hitting |
2738 | breakpoint location BL. This function does not check if we | |
2739 | should stop, only if BL explains the stop. */ | |
2740 | static int | |
2741 | bpstat_check_location (const struct bp_location *bl, CORE_ADDR bp_addr) | |
2742 | { | |
2743 | struct breakpoint *b = bl->owner; | |
2744 | ||
2745 | if (b->type != bp_watchpoint | |
2746 | && b->type != bp_hardware_watchpoint | |
2747 | && b->type != bp_read_watchpoint | |
2748 | && b->type != bp_access_watchpoint | |
2749 | && b->type != bp_hardware_breakpoint | |
fe798b75 | 2750 | && b->type != bp_catchpoint) /* a non-watchpoint bp */ |
18a18393 VP |
2751 | { |
2752 | if (bl->address != bp_addr) /* address doesn't match */ | |
2753 | return 0; | |
2754 | if (overlay_debugging /* unmapped overlay section */ | |
2755 | && section_is_overlay (bl->section) | |
2756 | && !section_is_mapped (bl->section)) | |
2757 | return 0; | |
2758 | } | |
2759 | ||
2760 | /* Continuable hardware watchpoints are treated as non-existent if the | |
2761 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
2762 | some data address). Otherwise gdb won't stop on a break instruction | |
2763 | in the code (not from a breakpoint) when a hardware watchpoint has | |
2764 | been defined. Also skip watchpoints which we know did not trigger | |
2765 | (did not match the data address). */ | |
2766 | ||
2767 | if ((b->type == bp_hardware_watchpoint | |
2768 | || b->type == bp_read_watchpoint | |
2769 | || b->type == bp_access_watchpoint) | |
2770 | && b->watchpoint_triggered == watch_triggered_no) | |
2771 | return 0; | |
2772 | ||
2773 | if (b->type == bp_hardware_breakpoint) | |
2774 | { | |
2775 | if (bl->address != bp_addr) | |
2776 | return 0; | |
2777 | if (overlay_debugging /* unmapped overlay section */ | |
2778 | && section_is_overlay (bl->section) | |
2779 | && !section_is_mapped (bl->section)) | |
2780 | return 0; | |
2781 | } | |
ce78b96d | 2782 | |
18a18393 VP |
2783 | /* Is this a catchpoint of a load or unload? If so, did we |
2784 | get a load or unload of the specified library? If not, | |
2785 | ignore it. */ | |
2786 | if ((b->type == bp_catch_load) | |
2787 | #if defined(SOLIB_HAVE_LOAD_EVENT) | |
2788 | && (!SOLIB_HAVE_LOAD_EVENT (PIDGET (inferior_ptid)) | |
2789 | || ((b->dll_pathname != NULL) | |
2790 | && (strcmp (b->dll_pathname, | |
2791 | SOLIB_LOADED_LIBRARY_PATHNAME ( | |
2792 | PIDGET (inferior_ptid))) | |
2793 | != 0))) | |
2794 | #endif | |
2795 | ) | |
2796 | return 0; | |
2797 | ||
2798 | if ((b->type == bp_catch_unload) | |
2799 | #if defined(SOLIB_HAVE_UNLOAD_EVENT) | |
2800 | && (!SOLIB_HAVE_UNLOAD_EVENT (PIDGET (inferior_ptid)) | |
2801 | || ((b->dll_pathname != NULL) | |
2802 | && (strcmp (b->dll_pathname, | |
2803 | SOLIB_UNLOADED_LIBRARY_PATHNAME ( | |
2804 | PIDGET (inferior_ptid))) | |
2805 | != 0))) | |
2806 | #endif | |
2807 | ) | |
2808 | return 0; | |
2809 | ||
ce78b96d JB |
2810 | if (b->type == bp_catchpoint) |
2811 | { | |
2812 | gdb_assert (b->ops != NULL && b->ops->breakpoint_hit != NULL); | |
2813 | if (!b->ops->breakpoint_hit (b)) | |
2814 | return 0; | |
2815 | } | |
2816 | ||
18a18393 VP |
2817 | return 1; |
2818 | } | |
2819 | ||
2820 | /* If BS refers to a watchpoint, determine if the watched values | |
2821 | has actually changed, and we should stop. If not, set BS->stop | |
2822 | to 0. */ | |
2823 | static void | |
2824 | bpstat_check_watchpoint (bpstat bs) | |
2825 | { | |
2826 | const struct bp_location *bl = bs->breakpoint_at; | |
2827 | struct breakpoint *b = bl->owner; | |
2828 | ||
2829 | if (b->type == bp_watchpoint | |
2830 | || b->type == bp_read_watchpoint | |
2831 | || b->type == bp_access_watchpoint | |
2832 | || b->type == bp_hardware_watchpoint) | |
2833 | { | |
2834 | CORE_ADDR addr; | |
2835 | struct value *v; | |
2836 | int must_check_value = 0; | |
2837 | ||
2838 | if (b->type == bp_watchpoint) | |
2839 | /* For a software watchpoint, we must always check the | |
2840 | watched value. */ | |
2841 | must_check_value = 1; | |
2842 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
2843 | /* We have a hardware watchpoint (read, write, or access) | |
2844 | and the target earlier reported an address watched by | |
2845 | this watchpoint. */ | |
2846 | must_check_value = 1; | |
2847 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
2848 | && b->type == bp_hardware_watchpoint) | |
2849 | /* We were stopped by a hardware watchpoint, but the target could | |
2850 | not report the data address. We must check the watchpoint's | |
2851 | value. Access and read watchpoints are out of luck; without | |
2852 | a data address, we can't figure it out. */ | |
2853 | must_check_value = 1; | |
2854 | ||
2855 | if (must_check_value) | |
2856 | { | |
2857 | char *message = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
2858 | b->number); | |
2859 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
2860 | int e = catch_errors (watchpoint_check, bs, message, | |
2861 | RETURN_MASK_ALL); | |
2862 | do_cleanups (cleanups); | |
2863 | switch (e) | |
2864 | { | |
2865 | case WP_DELETED: | |
2866 | /* We've already printed what needs to be printed. */ | |
2867 | bs->print_it = print_it_done; | |
2868 | /* Stop. */ | |
2869 | break; | |
2870 | case WP_VALUE_CHANGED: | |
2871 | if (b->type == bp_read_watchpoint) | |
2872 | { | |
2873 | /* Don't stop: read watchpoints shouldn't fire if | |
2874 | the value has changed. This is for targets | |
2875 | which cannot set read-only watchpoints. */ | |
2876 | bs->print_it = print_it_noop; | |
2877 | bs->stop = 0; | |
2878 | } | |
2879 | break; | |
2880 | case WP_VALUE_NOT_CHANGED: | |
2881 | if (b->type == bp_hardware_watchpoint | |
2882 | || b->type == bp_watchpoint) | |
2883 | { | |
2884 | /* Don't stop: write watchpoints shouldn't fire if | |
2885 | the value hasn't changed. */ | |
2886 | bs->print_it = print_it_noop; | |
2887 | bs->stop = 0; | |
2888 | } | |
2889 | /* Stop. */ | |
2890 | break; | |
2891 | default: | |
2892 | /* Can't happen. */ | |
2893 | case 0: | |
2894 | /* Error from catch_errors. */ | |
2895 | printf_filtered (_("Watchpoint %d deleted.\n"), b->number); | |
2896 | if (b->related_breakpoint) | |
2897 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
2898 | b->disposition = disp_del_at_next_stop; | |
2899 | /* We've already printed what needs to be printed. */ | |
2900 | bs->print_it = print_it_done; | |
2901 | break; | |
2902 | } | |
2903 | } | |
2904 | else /* must_check_value == 0 */ | |
2905 | { | |
2906 | /* This is a case where some watchpoint(s) triggered, but | |
2907 | not at the address of this watchpoint, or else no | |
2908 | watchpoint triggered after all. So don't print | |
2909 | anything for this watchpoint. */ | |
2910 | bs->print_it = print_it_noop; | |
2911 | bs->stop = 0; | |
2912 | } | |
2913 | } | |
2914 | } | |
2915 | ||
2916 | ||
2917 | /* Check conditions (condition proper, frame, thread and ignore count) | |
2918 | of breakpoint referred to by BS. If we should not stop for this | |
2919 | breakpoint, set BS->stop to 0. */ | |
2920 | static void | |
2921 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
2922 | { | |
2923 | int thread_id = pid_to_thread_id (ptid); | |
2924 | const struct bp_location *bl = bs->breakpoint_at; | |
2925 | struct breakpoint *b = bl->owner; | |
2926 | ||
2927 | if (frame_id_p (b->frame_id) | |
2928 | && !frame_id_eq (b->frame_id, get_frame_id (get_current_frame ()))) | |
2929 | bs->stop = 0; | |
2930 | else if (bs->stop) | |
2931 | { | |
2932 | int value_is_zero = 0; | |
2933 | ||
2934 | /* If this is a scope breakpoint, mark the associated | |
2935 | watchpoint as triggered so that we will handle the | |
2936 | out-of-scope event. We'll get to the watchpoint next | |
2937 | iteration. */ | |
2938 | if (b->type == bp_watchpoint_scope) | |
2939 | b->related_breakpoint->watchpoint_triggered = watch_triggered_yes; | |
2940 | ||
2941 | if (bl->cond && bl->owner->disposition != disp_del_at_next_stop) | |
2942 | { | |
2943 | /* Need to select the frame, with all that implies | |
2944 | so that the conditions will have the right context. */ | |
2945 | select_frame (get_current_frame ()); | |
2946 | value_is_zero | |
2947 | = catch_errors (breakpoint_cond_eval, (bl->cond), | |
2948 | "Error in testing breakpoint condition:\n", | |
2949 | RETURN_MASK_ALL); | |
2950 | /* FIXME-someday, should give breakpoint # */ | |
2951 | free_all_values (); | |
2952 | } | |
2953 | if (bl->cond && value_is_zero) | |
2954 | { | |
2955 | bs->stop = 0; | |
2956 | } | |
2957 | else if (b->thread != -1 && b->thread != thread_id) | |
2958 | { | |
2959 | bs->stop = 0; | |
2960 | } | |
2961 | else if (b->ignore_count > 0) | |
2962 | { | |
2963 | b->ignore_count--; | |
2964 | annotate_ignore_count_change (); | |
2965 | bs->stop = 0; | |
2966 | /* Increase the hit count even though we don't | |
2967 | stop. */ | |
2968 | ++(b->hit_count); | |
2969 | } | |
2970 | } | |
2971 | } | |
2972 | ||
2973 | ||
9709f61c | 2974 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 2975 | BP_ADDR in thread PTID. |
c906108c | 2976 | |
d983da9c | 2977 | Determine whether we stopped at a breakpoint, etc, or whether we |
c906108c SS |
2978 | don't understand this stop. Result is a chain of bpstat's such that: |
2979 | ||
c5aa993b | 2980 | if we don't understand the stop, the result is a null pointer. |
c906108c | 2981 | |
c5aa993b | 2982 | if we understand why we stopped, the result is not null. |
c906108c | 2983 | |
c5aa993b JM |
2984 | Each element of the chain refers to a particular breakpoint or |
2985 | watchpoint at which we have stopped. (We may have stopped for | |
2986 | several reasons concurrently.) | |
c906108c | 2987 | |
c5aa993b JM |
2988 | Each element of the chain has valid next, breakpoint_at, |
2989 | commands, FIXME??? fields. */ | |
c906108c SS |
2990 | |
2991 | bpstat | |
d983da9c | 2992 | bpstat_stop_status (CORE_ADDR bp_addr, ptid_t ptid) |
c906108c | 2993 | { |
0d381245 | 2994 | struct breakpoint *b = NULL; |
89f9893c | 2995 | const struct bp_location *bl; |
20874c92 | 2996 | struct bp_location *loc; |
c906108c SS |
2997 | /* Root of the chain of bpstat's */ |
2998 | struct bpstats root_bs[1]; | |
2999 | /* Pointer to the last thing in the chain currently. */ | |
3000 | bpstat bs = root_bs; | |
20874c92 | 3001 | int ix; |
d832cb68 | 3002 | int need_remove_insert; |
c906108c | 3003 | |
0d381245 | 3004 | ALL_BP_LOCATIONS (bl) |
c5aa993b | 3005 | { |
0d381245 VP |
3006 | b = bl->owner; |
3007 | gdb_assert (b); | |
468d015d | 3008 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) |
c5aa993b JM |
3009 | continue; |
3010 | ||
a5606eee VP |
3011 | /* For hardware watchpoints, we look only at the first location. |
3012 | The watchpoint_check function will work on entire expression, | |
3013 | not the individual locations. For read watchopints, the | |
3014 | watchpoints_triggered function have checked all locations | |
3015 | alrea | |
3016 | */ | |
3017 | if (b->type == bp_hardware_watchpoint && bl != b->loc) | |
3018 | continue; | |
3019 | ||
18a18393 VP |
3020 | if (!bpstat_check_location (bl, bp_addr)) |
3021 | continue; | |
3022 | ||
c5aa993b JM |
3023 | /* Come here if it's a watchpoint, or if the break address matches */ |
3024 | ||
0d381245 | 3025 | bs = bpstat_alloc (bl, bs); /* Alloc a bpstat to explain stop */ |
c5aa993b | 3026 | |
18a18393 VP |
3027 | /* Assume we stop. Should we find watchpoint that is not actually |
3028 | triggered, or if condition of breakpoint is false, we'll reset | |
3029 | 'stop' to 0. */ | |
c5aa993b JM |
3030 | bs->stop = 1; |
3031 | bs->print = 1; | |
3032 | ||
18a18393 VP |
3033 | bpstat_check_watchpoint (bs); |
3034 | if (!bs->stop) | |
3035 | continue; | |
c5aa993b | 3036 | |
18a18393 VP |
3037 | if (b->type == bp_thread_event || b->type == bp_overlay_event) |
3038 | /* We do not stop for these. */ | |
c5aa993b JM |
3039 | bs->stop = 0; |
3040 | else | |
18a18393 VP |
3041 | bpstat_check_breakpoint_conditions (bs, ptid); |
3042 | ||
3043 | if (bs->stop) | |
c5aa993b | 3044 | { |
18a18393 | 3045 | ++(b->hit_count); |
d983da9c | 3046 | |
18a18393 VP |
3047 | /* We will stop here */ |
3048 | if (b->disposition == disp_disable) | |
c5aa993b | 3049 | { |
514f746b AR |
3050 | if (b->enable_state != bp_permanent) |
3051 | b->enable_state = bp_disabled; | |
b60e7edf | 3052 | update_global_location_list (0); |
c5aa993b | 3053 | } |
18a18393 VP |
3054 | if (b->silent) |
3055 | bs->print = 0; | |
3056 | bs->commands = b->commands; | |
3057 | if (bs->commands && | |
3058 | (strcmp ("silent", bs->commands->line) == 0 | |
3059 | || (xdb_commands && strcmp ("Q", bs->commands->line) == 0))) | |
c5aa993b | 3060 | { |
18a18393 VP |
3061 | bs->commands = bs->commands->next; |
3062 | bs->print = 0; | |
c5aa993b | 3063 | } |
18a18393 | 3064 | bs->commands = copy_command_lines (bs->commands); |
c5aa993b | 3065 | } |
18a18393 | 3066 | |
c5aa993b JM |
3067 | /* Print nothing for this entry if we dont stop or if we dont print. */ |
3068 | if (bs->stop == 0 || bs->print == 0) | |
3069 | bs->print_it = print_it_noop; | |
3070 | } | |
c906108c | 3071 | |
20874c92 VP |
3072 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) |
3073 | { | |
3074 | if (loc->address == bp_addr) | |
3075 | { | |
3076 | bs = bpstat_alloc (loc, bs); | |
3077 | /* For hits of moribund locations, we should just proceed. */ | |
3078 | bs->stop = 0; | |
3079 | bs->print = 0; | |
3080 | bs->print_it = print_it_noop; | |
3081 | } | |
3082 | } | |
3083 | ||
c906108c SS |
3084 | bs->next = NULL; /* Terminate the chain */ |
3085 | bs = root_bs->next; /* Re-grab the head of the chain */ | |
3086 | ||
d983da9c DJ |
3087 | /* If we aren't stopping, the value of some hardware watchpoint may |
3088 | not have changed, but the intermediate memory locations we are | |
3089 | watching may have. Don't bother if we're stopping; this will get | |
3090 | done later. */ | |
3091 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3092 | if (bs->stop) | |
3093 | break; | |
3094 | ||
d832cb68 | 3095 | need_remove_insert = 0; |
d983da9c DJ |
3096 | if (bs == NULL) |
3097 | for (bs = root_bs->next; bs != NULL; bs = bs->next) | |
3098 | if (!bs->stop | |
20874c92 | 3099 | && bs->breakpoint_at->owner |
d983da9c DJ |
3100 | && (bs->breakpoint_at->owner->type == bp_hardware_watchpoint |
3101 | || bs->breakpoint_at->owner->type == bp_read_watchpoint | |
3102 | || bs->breakpoint_at->owner->type == bp_access_watchpoint)) | |
3103 | { | |
a5606eee VP |
3104 | /* remove/insert can invalidate bs->breakpoint_at, if this |
3105 | location is no longer used by the watchpoint. Prevent | |
3106 | further code from trying to use it. */ | |
3107 | bs->breakpoint_at = NULL; | |
d832cb68 | 3108 | need_remove_insert = 1; |
d983da9c DJ |
3109 | } |
3110 | ||
d832cb68 DD |
3111 | if (need_remove_insert) |
3112 | { | |
3113 | remove_breakpoints (); | |
3114 | insert_breakpoints (); | |
3115 | } | |
3116 | ||
d983da9c | 3117 | return root_bs->next; |
c906108c SS |
3118 | } |
3119 | \f | |
3120 | /* Tell what to do about this bpstat. */ | |
3121 | struct bpstat_what | |
fba45db2 | 3122 | bpstat_what (bpstat bs) |
c906108c SS |
3123 | { |
3124 | /* Classify each bpstat as one of the following. */ | |
c5aa993b JM |
3125 | enum class |
3126 | { | |
3127 | /* This bpstat element has no effect on the main_action. */ | |
3128 | no_effect = 0, | |
3129 | ||
3130 | /* There was a watchpoint, stop but don't print. */ | |
3131 | wp_silent, | |
c906108c | 3132 | |
c5aa993b JM |
3133 | /* There was a watchpoint, stop and print. */ |
3134 | wp_noisy, | |
c906108c | 3135 | |
c5aa993b JM |
3136 | /* There was a breakpoint but we're not stopping. */ |
3137 | bp_nostop, | |
c906108c | 3138 | |
c5aa993b JM |
3139 | /* There was a breakpoint, stop but don't print. */ |
3140 | bp_silent, | |
c906108c | 3141 | |
c5aa993b JM |
3142 | /* There was a breakpoint, stop and print. */ |
3143 | bp_noisy, | |
c906108c | 3144 | |
c5aa993b JM |
3145 | /* We hit the longjmp breakpoint. */ |
3146 | long_jump, | |
c906108c | 3147 | |
c5aa993b JM |
3148 | /* We hit the longjmp_resume breakpoint. */ |
3149 | long_resume, | |
c906108c | 3150 | |
c5aa993b JM |
3151 | /* We hit the step_resume breakpoint. */ |
3152 | step_resume, | |
c906108c | 3153 | |
c5aa993b JM |
3154 | /* We hit the shared library event breakpoint. */ |
3155 | shlib_event, | |
c906108c | 3156 | |
c5aa993b JM |
3157 | /* We caught a shared library event. */ |
3158 | catch_shlib_event, | |
c906108c | 3159 | |
c5aa993b JM |
3160 | /* This is just used to count how many enums there are. */ |
3161 | class_last | |
c906108c SS |
3162 | }; |
3163 | ||
3164 | /* Here is the table which drives this routine. So that we can | |
3165 | format it pretty, we define some abbreviations for the | |
3166 | enum bpstat_what codes. */ | |
3167 | #define kc BPSTAT_WHAT_KEEP_CHECKING | |
3168 | #define ss BPSTAT_WHAT_STOP_SILENT | |
3169 | #define sn BPSTAT_WHAT_STOP_NOISY | |
3170 | #define sgl BPSTAT_WHAT_SINGLE | |
3171 | #define slr BPSTAT_WHAT_SET_LONGJMP_RESUME | |
3172 | #define clr BPSTAT_WHAT_CLEAR_LONGJMP_RESUME | |
c906108c | 3173 | #define sr BPSTAT_WHAT_STEP_RESUME |
c906108c SS |
3174 | #define shl BPSTAT_WHAT_CHECK_SHLIBS |
3175 | #define shlr BPSTAT_WHAT_CHECK_SHLIBS_RESUME_FROM_HOOK | |
3176 | ||
3177 | /* "Can't happen." Might want to print an error message. | |
3178 | abort() is not out of the question, but chances are GDB is just | |
3179 | a bit confused, not unusable. */ | |
3180 | #define err BPSTAT_WHAT_STOP_NOISY | |
3181 | ||
3182 | /* Given an old action and a class, come up with a new action. */ | |
3183 | /* One interesting property of this table is that wp_silent is the same | |
3184 | as bp_silent and wp_noisy is the same as bp_noisy. That is because | |
3185 | after stopping, the check for whether to step over a breakpoint | |
3186 | (BPSTAT_WHAT_SINGLE type stuff) is handled in proceed() without | |
53a5351d JM |
3187 | reference to how we stopped. We retain separate wp_silent and |
3188 | bp_silent codes in case we want to change that someday. | |
43ff13b4 JM |
3189 | |
3190 | Another possibly interesting property of this table is that | |
3191 | there's a partial ordering, priority-like, of the actions. Once | |
3192 | you've decided that some action is appropriate, you'll never go | |
3193 | back and decide something of a lower priority is better. The | |
3194 | ordering is: | |
3195 | ||
4d5b2cd7 | 3196 | kc < clr sgl shl shlr slr sn sr ss |
78b6a731 | 3197 | sgl < shl shlr slr sn sr ss |
4d5b2cd7 | 3198 | slr < err shl shlr sn sr ss |
78b6a731 | 3199 | clr < err shl shlr sn sr ss |
4d5b2cd7 DJ |
3200 | ss < shl shlr sn sr |
3201 | sn < shl shlr sr | |
46d57086 DJ |
3202 | shl < shlr sr |
3203 | shlr < sr | |
4d5b2cd7 | 3204 | sr < |
c5aa993b | 3205 | |
43ff13b4 JM |
3206 | What I think this means is that we don't need a damned table |
3207 | here. If you just put the rows and columns in the right order, | |
3208 | it'd look awfully regular. We could simply walk the bpstat list | |
3209 | and choose the highest priority action we find, with a little | |
78b6a731 | 3210 | logic to handle the 'err' cases. */ |
c906108c SS |
3211 | |
3212 | /* step_resume entries: a step resume breakpoint overrides another | |
3213 | breakpoint of signal handling (see comment in wait_for_inferior | |
fcf70625 | 3214 | at where we set the step_resume breakpoint). */ |
c906108c SS |
3215 | |
3216 | static const enum bpstat_what_main_action | |
c5aa993b JM |
3217 | table[(int) class_last][(int) BPSTAT_WHAT_LAST] = |
3218 | { | |
3219 | /* old action */ | |
78b6a731 | 3220 | /* kc ss sn sgl slr clr sr shl shlr |
c5aa993b JM |
3221 | */ |
3222 | /*no_effect */ | |
78b6a731 | 3223 | {kc, ss, sn, sgl, slr, clr, sr, shl, shlr}, |
c5aa993b | 3224 | /*wp_silent */ |
78b6a731 | 3225 | {ss, ss, sn, ss, ss, ss, sr, shl, shlr}, |
c5aa993b | 3226 | /*wp_noisy */ |
78b6a731 | 3227 | {sn, sn, sn, sn, sn, sn, sr, shl, shlr}, |
c5aa993b | 3228 | /*bp_nostop */ |
78b6a731 | 3229 | {sgl, ss, sn, sgl, slr, slr, sr, shl, shlr}, |
c5aa993b | 3230 | /*bp_silent */ |
78b6a731 | 3231 | {ss, ss, sn, ss, ss, ss, sr, shl, shlr}, |
c5aa993b | 3232 | /*bp_noisy */ |
78b6a731 | 3233 | {sn, sn, sn, sn, sn, sn, sr, shl, shlr}, |
c5aa993b | 3234 | /*long_jump */ |
78b6a731 | 3235 | {slr, ss, sn, slr, slr, err, sr, shl, shlr}, |
c5aa993b | 3236 | /*long_resume */ |
78b6a731 | 3237 | {clr, ss, sn, err, err, err, sr, shl, shlr}, |
c5aa993b | 3238 | /*step_resume */ |
78b6a731 | 3239 | {sr, sr, sr, sr, sr, sr, sr, sr, sr}, |
c5aa993b | 3240 | /*shlib */ |
78b6a731 | 3241 | {shl, shl, shl, shl, shl, shl, sr, shl, shlr}, |
c5aa993b | 3242 | /*catch_shlib */ |
78b6a731 | 3243 | {shlr, shlr, shlr, shlr, shlr, shlr, sr, shlr, shlr} |
c5aa993b | 3244 | }; |
c906108c SS |
3245 | |
3246 | #undef kc | |
3247 | #undef ss | |
3248 | #undef sn | |
3249 | #undef sgl | |
3250 | #undef slr | |
3251 | #undef clr | |
c906108c SS |
3252 | #undef err |
3253 | #undef sr | |
3254 | #undef ts | |
3255 | #undef shl | |
3256 | #undef shlr | |
3257 | enum bpstat_what_main_action current_action = BPSTAT_WHAT_KEEP_CHECKING; | |
3258 | struct bpstat_what retval; | |
3259 | ||
3260 | retval.call_dummy = 0; | |
3261 | for (; bs != NULL; bs = bs->next) | |
3262 | { | |
3263 | enum class bs_class = no_effect; | |
3264 | if (bs->breakpoint_at == NULL) | |
3265 | /* I suspect this can happen if it was a momentary breakpoint | |
3266 | which has since been deleted. */ | |
3267 | continue; | |
20874c92 VP |
3268 | if (bs->breakpoint_at->owner == NULL) |
3269 | bs_class = bp_nostop; | |
3270 | else | |
4f8d1dc6 | 3271 | switch (bs->breakpoint_at->owner->type) |
c906108c SS |
3272 | { |
3273 | case bp_none: | |
3274 | continue; | |
3275 | ||
3276 | case bp_breakpoint: | |
3277 | case bp_hardware_breakpoint: | |
3278 | case bp_until: | |
3279 | case bp_finish: | |
3280 | if (bs->stop) | |
3281 | { | |
3282 | if (bs->print) | |
3283 | bs_class = bp_noisy; | |
3284 | else | |
3285 | bs_class = bp_silent; | |
3286 | } | |
3287 | else | |
3288 | bs_class = bp_nostop; | |
3289 | break; | |
3290 | case bp_watchpoint: | |
3291 | case bp_hardware_watchpoint: | |
3292 | case bp_read_watchpoint: | |
3293 | case bp_access_watchpoint: | |
3294 | if (bs->stop) | |
3295 | { | |
3296 | if (bs->print) | |
3297 | bs_class = wp_noisy; | |
3298 | else | |
3299 | bs_class = wp_silent; | |
3300 | } | |
3301 | else | |
53a5351d JM |
3302 | /* There was a watchpoint, but we're not stopping. |
3303 | This requires no further action. */ | |
c906108c SS |
3304 | bs_class = no_effect; |
3305 | break; | |
3306 | case bp_longjmp: | |
3307 | bs_class = long_jump; | |
3308 | break; | |
3309 | case bp_longjmp_resume: | |
3310 | bs_class = long_resume; | |
3311 | break; | |
3312 | case bp_step_resume: | |
3313 | if (bs->stop) | |
3314 | { | |
3315 | bs_class = step_resume; | |
3316 | } | |
3317 | else | |
3318 | /* It is for the wrong frame. */ | |
3319 | bs_class = bp_nostop; | |
3320 | break; | |
c906108c SS |
3321 | case bp_watchpoint_scope: |
3322 | bs_class = bp_nostop; | |
3323 | break; | |
c5aa993b JM |
3324 | case bp_shlib_event: |
3325 | bs_class = shlib_event; | |
3326 | break; | |
c4093a6a | 3327 | case bp_thread_event: |
1900040c | 3328 | case bp_overlay_event: |
c4093a6a JM |
3329 | bs_class = bp_nostop; |
3330 | break; | |
c5aa993b JM |
3331 | case bp_catch_load: |
3332 | case bp_catch_unload: | |
3333 | /* Only if this catchpoint triggered should we cause the | |
3334 | step-out-of-dld behaviour. Otherwise, we ignore this | |
3335 | catchpoint. */ | |
3336 | if (bs->stop) | |
3337 | bs_class = catch_shlib_event; | |
3338 | else | |
3339 | bs_class = no_effect; | |
3340 | break; | |
ce78b96d | 3341 | case bp_catchpoint: |
c5aa993b JM |
3342 | if (bs->stop) |
3343 | { | |
3344 | if (bs->print) | |
3345 | bs_class = bp_noisy; | |
3346 | else | |
3347 | bs_class = bp_silent; | |
3348 | } | |
3349 | else | |
53a5351d JM |
3350 | /* There was a catchpoint, but we're not stopping. |
3351 | This requires no further action. */ | |
c5aa993b JM |
3352 | bs_class = no_effect; |
3353 | break; | |
c906108c | 3354 | case bp_call_dummy: |
53a5351d JM |
3355 | /* Make sure the action is stop (silent or noisy), |
3356 | so infrun.c pops the dummy frame. */ | |
c906108c SS |
3357 | bs_class = bp_silent; |
3358 | retval.call_dummy = 1; | |
3359 | break; | |
3360 | } | |
c5aa993b | 3361 | current_action = table[(int) bs_class][(int) current_action]; |
c906108c SS |
3362 | } |
3363 | retval.main_action = current_action; | |
3364 | return retval; | |
3365 | } | |
3366 | ||
3367 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
3368 | without hardware support). This isn't related to a specific bpstat, | |
3369 | just to things like whether watchpoints are set. */ | |
3370 | ||
c5aa993b | 3371 | int |
fba45db2 | 3372 | bpstat_should_step (void) |
c906108c SS |
3373 | { |
3374 | struct breakpoint *b; | |
3375 | ALL_BREAKPOINTS (b) | |
468d015d | 3376 | if (breakpoint_enabled (b) && b->type == bp_watchpoint) |
3172dc30 | 3377 | return 1; |
c906108c SS |
3378 | return 0; |
3379 | } | |
3380 | ||
c906108c | 3381 | \f |
c5aa993b | 3382 | |
c906108c SS |
3383 | /* Given a bpstat that records zero or more triggered eventpoints, this |
3384 | function returns another bpstat which contains only the catchpoints | |
3385 | on that first list, if any. */ | |
3386 | void | |
fba45db2 | 3387 | bpstat_get_triggered_catchpoints (bpstat ep_list, bpstat *cp_list) |
c5aa993b JM |
3388 | { |
3389 | struct bpstats root_bs[1]; | |
3390 | bpstat bs = root_bs; | |
3391 | struct breakpoint *ep; | |
3392 | char *dll_pathname; | |
3393 | ||
c906108c SS |
3394 | bpstat_clear (cp_list); |
3395 | root_bs->next = NULL; | |
c5aa993b JM |
3396 | |
3397 | for (; ep_list != NULL; ep_list = ep_list->next) | |
c906108c SS |
3398 | { |
3399 | /* Is this eventpoint a catchpoint? If not, ignore it. */ | |
4f8d1dc6 | 3400 | ep = ep_list->breakpoint_at->owner; |
c906108c | 3401 | if (ep == NULL) |
c5aa993b JM |
3402 | break; |
3403 | if ((ep->type != bp_catch_load) && | |
dfdfb3ca | 3404 | (ep->type != bp_catch_unload)) |
53a5351d | 3405 | /* pai: (temp) ADD fork/vfork here!! */ |
c5aa993b JM |
3406 | continue; |
3407 | ||
c906108c | 3408 | /* Yes; add it to the list. */ |
4f8d1dc6 | 3409 | bs = bpstat_alloc (ep_list->breakpoint_at, bs); |
c906108c SS |
3410 | *bs = *ep_list; |
3411 | bs->next = NULL; | |
3412 | bs = root_bs->next; | |
c5aa993b | 3413 | |
c906108c SS |
3414 | #if defined(SOLIB_ADD) |
3415 | /* Also, for each triggered catchpoint, tag it with the name of | |
3416 | the library that caused this trigger. (We copy the name now, | |
3417 | because it's only guaranteed to be available NOW, when the | |
3418 | catchpoint triggers. Clients who may wish to know the name | |
3419 | later must get it from the catchpoint itself.) */ | |
3420 | if (ep->triggered_dll_pathname != NULL) | |
b8c9b27d | 3421 | xfree (ep->triggered_dll_pathname); |
c906108c | 3422 | if (ep->type == bp_catch_load) |
39f77062 KB |
3423 | dll_pathname = SOLIB_LOADED_LIBRARY_PATHNAME ( |
3424 | PIDGET (inferior_ptid)); | |
c906108c | 3425 | else |
39f77062 KB |
3426 | dll_pathname = SOLIB_UNLOADED_LIBRARY_PATHNAME ( |
3427 | PIDGET (inferior_ptid)); | |
c906108c SS |
3428 | #else |
3429 | dll_pathname = NULL; | |
3430 | #endif | |
3431 | if (dll_pathname) | |
3432 | { | |
53a5351d JM |
3433 | ep->triggered_dll_pathname = (char *) |
3434 | xmalloc (strlen (dll_pathname) + 1); | |
c906108c SS |
3435 | strcpy (ep->triggered_dll_pathname, dll_pathname); |
3436 | } | |
3437 | else | |
3438 | ep->triggered_dll_pathname = NULL; | |
3439 | } | |
c5aa993b | 3440 | |
c906108c SS |
3441 | *cp_list = bs; |
3442 | } | |
3443 | ||
0d381245 VP |
3444 | static void print_breakpoint_location (struct breakpoint *b, |
3445 | struct bp_location *loc, | |
3446 | char *wrap_indent, | |
3447 | struct ui_stream *stb) | |
3448 | { | |
3449 | if (b->source_file) | |
3450 | { | |
3451 | struct symbol *sym | |
3452 | = find_pc_sect_function (loc->address, loc->section); | |
3453 | if (sym) | |
3454 | { | |
3455 | ui_out_text (uiout, "in "); | |
3456 | ui_out_field_string (uiout, "func", | |
3457 | SYMBOL_PRINT_NAME (sym)); | |
3458 | ui_out_wrap_hint (uiout, wrap_indent); | |
3459 | ui_out_text (uiout, " at "); | |
3460 | } | |
3461 | ui_out_field_string (uiout, "file", b->source_file); | |
3462 | ui_out_text (uiout, ":"); | |
3463 | ||
3464 | if (ui_out_is_mi_like_p (uiout)) | |
3465 | { | |
3466 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
3467 | char *fullname = symtab_to_fullname (sal.symtab); | |
3468 | ||
3469 | if (fullname) | |
3470 | ui_out_field_string (uiout, "fullname", fullname); | |
3471 | } | |
3472 | ||
3473 | ui_out_field_int (uiout, "line", b->line_number); | |
3474 | } | |
3475 | else if (!b->loc) | |
3476 | { | |
3477 | ui_out_field_string (uiout, "pending", b->addr_string); | |
3478 | } | |
3479 | else | |
3480 | { | |
3481 | print_address_symbolic (loc->address, stb->stream, demangle, ""); | |
3482 | ui_out_field_stream (uiout, "at", stb); | |
3483 | } | |
3484 | } | |
3485 | ||
c4093a6a | 3486 | /* Print B to gdb_stdout. */ |
c906108c | 3487 | static void |
0d381245 VP |
3488 | print_one_breakpoint_location (struct breakpoint *b, |
3489 | struct bp_location *loc, | |
3490 | int loc_number, | |
3491 | CORE_ADDR *last_addr) | |
c906108c | 3492 | { |
52f0bd74 AC |
3493 | struct command_line *l; |
3494 | struct symbol *sym; | |
c4093a6a JM |
3495 | struct ep_type_description |
3496 | { | |
3497 | enum bptype type; | |
3498 | char *description; | |
3499 | }; | |
3500 | static struct ep_type_description bptypes[] = | |
c906108c | 3501 | { |
c5aa993b JM |
3502 | {bp_none, "?deleted?"}, |
3503 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 3504 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
3505 | {bp_until, "until"}, |
3506 | {bp_finish, "finish"}, | |
3507 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 3508 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
3509 | {bp_read_watchpoint, "read watchpoint"}, |
3510 | {bp_access_watchpoint, "acc watchpoint"}, | |
3511 | {bp_longjmp, "longjmp"}, | |
3512 | {bp_longjmp_resume, "longjmp resume"}, | |
3513 | {bp_step_resume, "step resume"}, | |
c5aa993b JM |
3514 | {bp_watchpoint_scope, "watchpoint scope"}, |
3515 | {bp_call_dummy, "call dummy"}, | |
3516 | {bp_shlib_event, "shlib events"}, | |
c4093a6a | 3517 | {bp_thread_event, "thread events"}, |
1900040c | 3518 | {bp_overlay_event, "overlay events"}, |
ce78b96d | 3519 | {bp_catchpoint, "catchpoint"}, |
c5aa993b | 3520 | {bp_catch_load, "catch load"}, |
fe798b75 | 3521 | {bp_catch_unload, "catch unload"} |
c5aa993b | 3522 | }; |
c4093a6a | 3523 | |
c2c6d25f | 3524 | static char bpenables[] = "nynny"; |
c906108c | 3525 | char wrap_indent[80]; |
8b93c638 JM |
3526 | struct ui_stream *stb = ui_out_stream_new (uiout); |
3527 | struct cleanup *old_chain = make_cleanup_ui_out_stream_delete (stb); | |
3b31d625 | 3528 | struct cleanup *bkpt_chain; |
c906108c | 3529 | |
0d381245 VP |
3530 | int header_of_multiple = 0; |
3531 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
3532 | struct value_print_options opts; |
3533 | ||
3534 | get_user_print_options (&opts); | |
0d381245 VP |
3535 | |
3536 | gdb_assert (!loc || loc_number != 0); | |
3537 | /* See comment in print_one_breakpoint concerning | |
3538 | treatment of breakpoints with single disabled | |
3539 | location. */ | |
3540 | if (loc == NULL | |
3541 | && (b->loc != NULL | |
3542 | && (b->loc->next != NULL || !b->loc->enabled))) | |
3543 | header_of_multiple = 1; | |
3544 | if (loc == NULL) | |
3545 | loc = b->loc; | |
3546 | ||
c4093a6a | 3547 | annotate_record (); |
3b31d625 | 3548 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); |
c4093a6a JM |
3549 | |
3550 | /* 1 */ | |
3551 | annotate_field (0); | |
0d381245 VP |
3552 | if (part_of_multiple) |
3553 | { | |
3554 | char *formatted; | |
0c6773c1 | 3555 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
3556 | ui_out_field_string (uiout, "number", formatted); |
3557 | xfree (formatted); | |
3558 | } | |
3559 | else | |
3560 | { | |
3561 | ui_out_field_int (uiout, "number", b->number); | |
3562 | } | |
c4093a6a JM |
3563 | |
3564 | /* 2 */ | |
3565 | annotate_field (1); | |
0d381245 VP |
3566 | if (part_of_multiple) |
3567 | ui_out_field_skip (uiout, "type"); | |
3568 | else | |
3569 | { | |
3570 | if (((int) b->type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
3571 | || ((int) b->type != bptypes[(int) b->type].type)) | |
3572 | internal_error (__FILE__, __LINE__, | |
3573 | _("bptypes table does not describe type #%d."), | |
3574 | (int) b->type); | |
3575 | ui_out_field_string (uiout, "type", bptypes[(int) b->type].description); | |
3576 | } | |
c4093a6a JM |
3577 | |
3578 | /* 3 */ | |
3579 | annotate_field (2); | |
0d381245 VP |
3580 | if (part_of_multiple) |
3581 | ui_out_field_skip (uiout, "disp"); | |
3582 | else | |
2cec12e5 | 3583 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 3584 | |
c4093a6a JM |
3585 | |
3586 | /* 4 */ | |
3587 | annotate_field (3); | |
0d381245 | 3588 | if (part_of_multiple) |
54e52265 | 3589 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 3590 | else |
54e52265 VP |
3591 | ui_out_field_fmt (uiout, "enabled", "%c", |
3592 | bpenables[(int) b->enable_state]); | |
3593 | ui_out_spaces (uiout, 2); | |
0d381245 | 3594 | |
c4093a6a JM |
3595 | |
3596 | /* 5 and 6 */ | |
3597 | strcpy (wrap_indent, " "); | |
79a45b7d | 3598 | if (opts.addressprint) |
75ac9d7b | 3599 | { |
17a912b6 | 3600 | if (gdbarch_addr_bit (current_gdbarch) <= 32) |
75ac9d7b MS |
3601 | strcat (wrap_indent, " "); |
3602 | else | |
3603 | strcat (wrap_indent, " "); | |
3604 | } | |
c906108c | 3605 | |
3086aeae | 3606 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 VP |
3607 | { |
3608 | /* Although the print_one can possibly print | |
3609 | all locations, calling it here is not likely | |
3610 | to get any nice result. So, make sure there's | |
3611 | just one location. */ | |
3612 | gdb_assert (b->loc == NULL || b->loc->next == NULL); | |
3613 | b->ops->print_one (b, last_addr); | |
3614 | } | |
3086aeae DJ |
3615 | else |
3616 | switch (b->type) | |
3617 | { | |
3618 | case bp_none: | |
3619 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 3620 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 3621 | break; |
c906108c | 3622 | |
3086aeae DJ |
3623 | case bp_watchpoint: |
3624 | case bp_hardware_watchpoint: | |
3625 | case bp_read_watchpoint: | |
3626 | case bp_access_watchpoint: | |
3627 | /* Field 4, the address, is omitted (which makes the columns | |
3628 | not line up too nicely with the headers, but the effect | |
3629 | is relatively readable). */ | |
79a45b7d | 3630 | if (opts.addressprint) |
3086aeae DJ |
3631 | ui_out_field_skip (uiout, "addr"); |
3632 | annotate_field (5); | |
3633 | print_expression (b->exp, stb->stream); | |
3634 | ui_out_field_stream (uiout, "what", stb); | |
3635 | break; | |
3636 | ||
3637 | case bp_catch_load: | |
3638 | case bp_catch_unload: | |
3639 | /* Field 4, the address, is omitted (which makes the columns | |
3640 | not line up too nicely with the headers, but the effect | |
3641 | is relatively readable). */ | |
79a45b7d | 3642 | if (opts.addressprint) |
3086aeae DJ |
3643 | ui_out_field_skip (uiout, "addr"); |
3644 | annotate_field (5); | |
3645 | if (b->dll_pathname == NULL) | |
3646 | { | |
3647 | ui_out_field_string (uiout, "what", "<any library>"); | |
3648 | ui_out_spaces (uiout, 1); | |
3649 | } | |
3650 | else | |
3651 | { | |
3652 | ui_out_text (uiout, "library \""); | |
3653 | ui_out_field_string (uiout, "what", b->dll_pathname); | |
3654 | ui_out_text (uiout, "\" "); | |
3655 | } | |
3656 | break; | |
3657 | ||
3086aeae DJ |
3658 | case bp_breakpoint: |
3659 | case bp_hardware_breakpoint: | |
3660 | case bp_until: | |
3661 | case bp_finish: | |
3662 | case bp_longjmp: | |
3663 | case bp_longjmp_resume: | |
3664 | case bp_step_resume: | |
3086aeae DJ |
3665 | case bp_watchpoint_scope: |
3666 | case bp_call_dummy: | |
3667 | case bp_shlib_event: | |
3668 | case bp_thread_event: | |
3669 | case bp_overlay_event: | |
79a45b7d | 3670 | if (opts.addressprint) |
3086aeae DJ |
3671 | { |
3672 | annotate_field (4); | |
54e52265 | 3673 | if (header_of_multiple) |
0d381245 | 3674 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 3675 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 3676 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 3677 | else |
0d381245 | 3678 | ui_out_field_core_addr (uiout, "addr", loc->address); |
3086aeae DJ |
3679 | } |
3680 | annotate_field (5); | |
0d381245 VP |
3681 | if (!header_of_multiple) |
3682 | print_breakpoint_location (b, loc, wrap_indent, stb); | |
3683 | if (b->loc) | |
3684 | *last_addr = b->loc->address; | |
3086aeae DJ |
3685 | break; |
3686 | } | |
c906108c | 3687 | |
0d381245 | 3688 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 3689 | { |
8b93c638 JM |
3690 | /* FIXME: This seems to be redundant and lost here; see the |
3691 | "stop only in" line a little further down. */ | |
3692 | ui_out_text (uiout, " thread "); | |
3693 | ui_out_field_int (uiout, "thread", b->thread); | |
c4093a6a JM |
3694 | } |
3695 | ||
8b93c638 | 3696 | ui_out_text (uiout, "\n"); |
c4093a6a | 3697 | |
0d381245 | 3698 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
3699 | { |
3700 | annotate_field (6); | |
8b93c638 | 3701 | ui_out_text (uiout, "\tstop only in stack frame at "); |
818dd999 AC |
3702 | /* FIXME: cagney/2002-12-01: Shouldn't be poeking around inside |
3703 | the frame ID. */ | |
d0a55772 | 3704 | ui_out_field_core_addr (uiout, "frame", b->frame_id.stack_addr); |
8b93c638 | 3705 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
3706 | } |
3707 | ||
0d381245 | 3708 | if (!part_of_multiple && b->cond_string && !ada_exception_catchpoint_p (b)) |
c4093a6a | 3709 | { |
f7f9143b JB |
3710 | /* We do not print the condition for Ada exception catchpoints |
3711 | because the condition is an internal implementation detail | |
3712 | that we do not want to expose to the user. */ | |
c4093a6a | 3713 | annotate_field (7); |
8b93c638 | 3714 | ui_out_text (uiout, "\tstop only if "); |
0101ce28 JJ |
3715 | ui_out_field_string (uiout, "cond", b->cond_string); |
3716 | ui_out_text (uiout, "\n"); | |
3717 | } | |
3718 | ||
0d381245 | 3719 | if (!part_of_multiple && b->thread != -1) |
c4093a6a JM |
3720 | { |
3721 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3722 | ui_out_text (uiout, "\tstop only in thread "); |
3723 | ui_out_field_int (uiout, "thread", b->thread); | |
3724 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
3725 | } |
3726 | ||
63c715c6 | 3727 | if (!part_of_multiple && b->hit_count) |
c4093a6a JM |
3728 | { |
3729 | /* FIXME should make an annotation for this */ | |
8b93c638 JM |
3730 | if (ep_is_catchpoint (b)) |
3731 | ui_out_text (uiout, "\tcatchpoint"); | |
3732 | else | |
3733 | ui_out_text (uiout, "\tbreakpoint"); | |
3734 | ui_out_text (uiout, " already hit "); | |
3735 | ui_out_field_int (uiout, "times", b->hit_count); | |
3736 | if (b->hit_count == 1) | |
3737 | ui_out_text (uiout, " time\n"); | |
3738 | else | |
3739 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
3740 | } |
3741 | ||
fb40c209 AC |
3742 | /* Output the count also if it is zero, but only if this is |
3743 | mi. FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 3744 | if (ui_out_is_mi_like_p (uiout)) |
63c715c6 | 3745 | if (!part_of_multiple && b->hit_count == 0) |
fb40c209 | 3746 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 3747 | |
0d381245 | 3748 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
3749 | { |
3750 | annotate_field (8); | |
8b93c638 JM |
3751 | ui_out_text (uiout, "\tignore next "); |
3752 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
3753 | ui_out_text (uiout, " hits\n"); | |
c4093a6a JM |
3754 | } |
3755 | ||
0d381245 | 3756 | if (!part_of_multiple && (l = b->commands)) |
c4093a6a | 3757 | { |
3b31d625 EZ |
3758 | struct cleanup *script_chain; |
3759 | ||
c4093a6a | 3760 | annotate_field (9); |
3b31d625 | 3761 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 3762 | print_command_lines (uiout, l, 4); |
3b31d625 | 3763 | do_cleanups (script_chain); |
c4093a6a | 3764 | } |
d24317b4 VP |
3765 | |
3766 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) | |
3767 | { | |
3768 | if (b->addr_string) | |
3769 | ui_out_field_string (uiout, "original-location", b->addr_string); | |
3770 | else if (b->exp_string) | |
3771 | ui_out_field_string (uiout, "original-location", b->exp_string); | |
3772 | } | |
3773 | ||
3b31d625 | 3774 | do_cleanups (bkpt_chain); |
8b93c638 | 3775 | do_cleanups (old_chain); |
c4093a6a | 3776 | } |
c5aa993b | 3777 | |
0d381245 VP |
3778 | static void |
3779 | print_one_breakpoint (struct breakpoint *b, | |
3780 | CORE_ADDR *last_addr) | |
3781 | { | |
3782 | print_one_breakpoint_location (b, NULL, 0, last_addr); | |
3783 | ||
3784 | /* If this breakpoint has custom print function, | |
3785 | it's already printed. Otherwise, print individual | |
3786 | locations, if any. */ | |
3787 | if (b->ops == NULL || b->ops->print_one == NULL) | |
3788 | { | |
3789 | /* If breakpoint has a single location that is | |
3790 | disabled, we print it as if it had | |
3791 | several locations, since otherwise it's hard to | |
3792 | represent "breakpoint enabled, location disabled" | |
a5606eee VP |
3793 | situation. |
3794 | Note that while hardware watchpoints have | |
3795 | several locations internally, that's no a property | |
3796 | exposed to user. */ | |
0d381245 | 3797 | if (b->loc |
a5606eee | 3798 | && !is_hardware_watchpoint (b) |
0d381245 | 3799 | && (b->loc->next || !b->loc->enabled) |
a5606eee | 3800 | && !ui_out_is_mi_like_p (uiout)) |
0d381245 VP |
3801 | { |
3802 | struct bp_location *loc; | |
3803 | int n = 1; | |
3804 | for (loc = b->loc; loc; loc = loc->next, ++n) | |
3805 | print_one_breakpoint_location (b, loc, n, last_addr); | |
3806 | } | |
3807 | } | |
3808 | } | |
3809 | ||
3810 | ||
c4093a6a JM |
3811 | struct captured_breakpoint_query_args |
3812 | { | |
3813 | int bnum; | |
3814 | }; | |
c5aa993b | 3815 | |
c4093a6a | 3816 | static int |
2b65245e | 3817 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
3818 | { |
3819 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 3820 | struct breakpoint *b; |
c4093a6a JM |
3821 | CORE_ADDR dummy_addr = 0; |
3822 | ALL_BREAKPOINTS (b) | |
3823 | { | |
3824 | if (args->bnum == b->number) | |
c5aa993b | 3825 | { |
c4093a6a JM |
3826 | print_one_breakpoint (b, &dummy_addr); |
3827 | return GDB_RC_OK; | |
c5aa993b | 3828 | } |
c4093a6a JM |
3829 | } |
3830 | return GDB_RC_NONE; | |
3831 | } | |
c5aa993b | 3832 | |
c4093a6a | 3833 | enum gdb_rc |
ce43223b | 3834 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, char **error_message) |
c4093a6a JM |
3835 | { |
3836 | struct captured_breakpoint_query_args args; | |
3837 | args.bnum = bnum; | |
3838 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
3839 | an error. */ | |
b0b13bb4 DJ |
3840 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
3841 | error_message, RETURN_MASK_ALL) < 0) | |
3842 | return GDB_RC_FAIL; | |
3843 | else | |
3844 | return GDB_RC_OK; | |
c4093a6a | 3845 | } |
c5aa993b | 3846 | |
7f3b0473 AC |
3847 | /* Return non-zero if B is user settable (breakpoints, watchpoints, |
3848 | catchpoints, et.al.). */ | |
3849 | ||
3850 | static int | |
3851 | user_settable_breakpoint (const struct breakpoint *b) | |
3852 | { | |
3853 | return (b->type == bp_breakpoint | |
ce78b96d | 3854 | || b->type == bp_catchpoint |
7f3b0473 AC |
3855 | || b->type == bp_catch_load |
3856 | || b->type == bp_catch_unload | |
7f3b0473 AC |
3857 | || b->type == bp_hardware_breakpoint |
3858 | || b->type == bp_watchpoint | |
3859 | || b->type == bp_read_watchpoint | |
3860 | || b->type == bp_access_watchpoint | |
3861 | || b->type == bp_hardware_watchpoint); | |
3862 | } | |
3863 | ||
3864 | /* Print information on user settable breakpoint (watchpoint, etc) | |
3865 | number BNUM. If BNUM is -1 print all user settable breakpoints. | |
3866 | If ALLFLAG is non-zero, include non- user settable breakpoints. */ | |
c906108c | 3867 | |
c4093a6a | 3868 | static void |
fba45db2 | 3869 | breakpoint_1 (int bnum, int allflag) |
c4093a6a | 3870 | { |
52f0bd74 | 3871 | struct breakpoint *b; |
c4093a6a | 3872 | CORE_ADDR last_addr = (CORE_ADDR) -1; |
7f3b0473 | 3873 | int nr_printable_breakpoints; |
3b31d625 | 3874 | struct cleanup *bkpttbl_chain; |
79a45b7d | 3875 | struct value_print_options opts; |
c4093a6a | 3876 | |
79a45b7d TT |
3877 | get_user_print_options (&opts); |
3878 | ||
7f3b0473 AC |
3879 | /* Compute the number of rows in the table. */ |
3880 | nr_printable_breakpoints = 0; | |
3881 | ALL_BREAKPOINTS (b) | |
3882 | if (bnum == -1 | |
3883 | || bnum == b->number) | |
3884 | { | |
3885 | if (allflag || user_settable_breakpoint (b)) | |
3886 | nr_printable_breakpoints++; | |
3887 | } | |
3888 | ||
79a45b7d | 3889 | if (opts.addressprint) |
3b31d625 EZ |
3890 | bkpttbl_chain |
3891 | = make_cleanup_ui_out_table_begin_end (uiout, 6, nr_printable_breakpoints, | |
3892 | "BreakpointTable"); | |
8b93c638 | 3893 | else |
3b31d625 EZ |
3894 | bkpttbl_chain |
3895 | = make_cleanup_ui_out_table_begin_end (uiout, 5, nr_printable_breakpoints, | |
3896 | "BreakpointTable"); | |
8b93c638 | 3897 | |
7f3b0473 | 3898 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
3899 | annotate_breakpoints_headers (); |
3900 | if (nr_printable_breakpoints > 0) | |
3901 | annotate_field (0); | |
0d381245 | 3902 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
3903 | if (nr_printable_breakpoints > 0) |
3904 | annotate_field (1); | |
3905 | ui_out_table_header (uiout, 14, ui_left, "type", "Type"); /* 2 */ | |
3906 | if (nr_printable_breakpoints > 0) | |
3907 | annotate_field (2); | |
3908 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ | |
3909 | if (nr_printable_breakpoints > 0) | |
3910 | annotate_field (3); | |
54e52265 | 3911 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 3912 | if (opts.addressprint) |
7f3b0473 | 3913 | { |
d7faa9e7 AC |
3914 | if (nr_printable_breakpoints > 0) |
3915 | annotate_field (4); | |
17a912b6 | 3916 | if (gdbarch_addr_bit (current_gdbarch) <= 32) |
b25959ec | 3917 | ui_out_table_header (uiout, 10, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3918 | else |
b25959ec | 3919 | ui_out_table_header (uiout, 18, ui_left, "addr", "Address");/* 5 */ |
7f3b0473 | 3920 | } |
d7faa9e7 AC |
3921 | if (nr_printable_breakpoints > 0) |
3922 | annotate_field (5); | |
3923 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
3924 | ui_out_table_body (uiout); | |
3925 | if (nr_printable_breakpoints > 0) | |
3926 | annotate_breakpoints_table (); | |
7f3b0473 | 3927 | |
c4093a6a JM |
3928 | ALL_BREAKPOINTS (b) |
3929 | if (bnum == -1 | |
3930 | || bnum == b->number) | |
3931 | { | |
3932 | /* We only print out user settable breakpoints unless the | |
3933 | allflag is set. */ | |
7f3b0473 AC |
3934 | if (allflag || user_settable_breakpoint (b)) |
3935 | print_one_breakpoint (b, &last_addr); | |
c4093a6a JM |
3936 | } |
3937 | ||
3b31d625 | 3938 | do_cleanups (bkpttbl_chain); |
698384cd | 3939 | |
7f3b0473 | 3940 | if (nr_printable_breakpoints == 0) |
c906108c | 3941 | { |
8b93c638 JM |
3942 | if (bnum == -1) |
3943 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); | |
3944 | else | |
3945 | ui_out_message (uiout, 0, "No breakpoint or watchpoint number %d.\n", | |
3946 | bnum); | |
c906108c SS |
3947 | } |
3948 | else | |
c4093a6a JM |
3949 | { |
3950 | /* Compare against (CORE_ADDR)-1 in case some compiler decides | |
3951 | that a comparison of an unsigned with -1 is always false. */ | |
d1aa2f50 | 3952 | if (last_addr != (CORE_ADDR) -1 && !server_command) |
8b9b9e1a | 3953 | set_next_address (current_gdbarch, last_addr); |
c4093a6a | 3954 | } |
c906108c | 3955 | |
c4093a6a JM |
3956 | /* FIXME? Should this be moved up so that it is only called when |
3957 | there have been breakpoints? */ | |
c906108c SS |
3958 | annotate_breakpoints_table_end (); |
3959 | } | |
3960 | ||
c906108c | 3961 | static void |
fba45db2 | 3962 | breakpoints_info (char *bnum_exp, int from_tty) |
c906108c SS |
3963 | { |
3964 | int bnum = -1; | |
3965 | ||
3966 | if (bnum_exp) | |
bb518678 | 3967 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3968 | |
3969 | breakpoint_1 (bnum, 0); | |
3970 | } | |
3971 | ||
7a292a7a | 3972 | static void |
fba45db2 | 3973 | maintenance_info_breakpoints (char *bnum_exp, int from_tty) |
c906108c SS |
3974 | { |
3975 | int bnum = -1; | |
3976 | ||
3977 | if (bnum_exp) | |
bb518678 | 3978 | bnum = parse_and_eval_long (bnum_exp); |
c906108c SS |
3979 | |
3980 | breakpoint_1 (bnum, 1); | |
3981 | } | |
3982 | ||
0d381245 | 3983 | static int |
714835d5 UW |
3984 | breakpoint_has_pc (struct breakpoint *b, |
3985 | CORE_ADDR pc, struct obj_section *section) | |
0d381245 VP |
3986 | { |
3987 | struct bp_location *bl = b->loc; | |
3988 | for (; bl; bl = bl->next) | |
3989 | { | |
3990 | if (bl->address == pc | |
3991 | && (!overlay_debugging || bl->section == section)) | |
3992 | return 1; | |
3993 | } | |
3994 | return 0; | |
3995 | } | |
3996 | ||
c906108c SS |
3997 | /* Print a message describing any breakpoints set at PC. */ |
3998 | ||
3999 | static void | |
714835d5 UW |
4000 | describe_other_breakpoints (CORE_ADDR pc, struct obj_section *section, |
4001 | int thread) | |
c906108c | 4002 | { |
52f0bd74 AC |
4003 | int others = 0; |
4004 | struct breakpoint *b; | |
c906108c SS |
4005 | |
4006 | ALL_BREAKPOINTS (b) | |
0d381245 | 4007 | others += breakpoint_has_pc (b, pc, section); |
c906108c SS |
4008 | if (others > 0) |
4009 | { | |
a3f17187 AC |
4010 | if (others == 1) |
4011 | printf_filtered (_("Note: breakpoint ")); | |
4012 | else /* if (others == ???) */ | |
4013 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 4014 | ALL_BREAKPOINTS (b) |
0d381245 VP |
4015 | if (breakpoint_has_pc (b, pc, section)) |
4016 | { | |
4017 | others--; | |
4018 | printf_filtered ("%d", b->number); | |
4019 | if (b->thread == -1 && thread != -1) | |
4020 | printf_filtered (" (all threads)"); | |
4021 | else if (b->thread != -1) | |
4022 | printf_filtered (" (thread %d)", b->thread); | |
4023 | printf_filtered ("%s%s ", | |
4024 | ((b->enable_state == bp_disabled || | |
4025 | b->enable_state == bp_call_disabled) | |
4026 | ? " (disabled)" | |
4027 | : b->enable_state == bp_permanent | |
4028 | ? " (permanent)" | |
4029 | : ""), | |
4030 | (others > 1) ? "," | |
4031 | : ((others == 1) ? " and" : "")); | |
4032 | } | |
a3f17187 | 4033 | printf_filtered (_("also set at pc ")); |
ed49a04f | 4034 | fputs_filtered (paddress (pc), gdb_stdout); |
c906108c SS |
4035 | printf_filtered (".\n"); |
4036 | } | |
4037 | } | |
4038 | \f | |
4039 | /* Set the default place to put a breakpoint | |
4040 | for the `break' command with no arguments. */ | |
4041 | ||
4042 | void | |
fba45db2 KB |
4043 | set_default_breakpoint (int valid, CORE_ADDR addr, struct symtab *symtab, |
4044 | int line) | |
c906108c SS |
4045 | { |
4046 | default_breakpoint_valid = valid; | |
4047 | default_breakpoint_address = addr; | |
4048 | default_breakpoint_symtab = symtab; | |
4049 | default_breakpoint_line = line; | |
4050 | } | |
4051 | ||
e4f237da KB |
4052 | /* Return true iff it is meaningful to use the address member of |
4053 | BPT. For some breakpoint types, the address member is irrelevant | |
4054 | and it makes no sense to attempt to compare it to other addresses | |
4055 | (or use it for any other purpose either). | |
4056 | ||
4057 | More specifically, each of the following breakpoint types will always | |
4058 | have a zero valued address and we don't want check_duplicates() to mark | |
4059 | breakpoints of any of these types to be a duplicate of an actual | |
4060 | breakpoint at address zero: | |
4061 | ||
4062 | bp_watchpoint | |
4063 | bp_hardware_watchpoint | |
4064 | bp_read_watchpoint | |
4065 | bp_access_watchpoint | |
fe798b75 | 4066 | bp_catchpoint */ |
e4f237da KB |
4067 | |
4068 | static int | |
4069 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
4070 | { | |
4071 | enum bptype type = bpt->type; | |
4072 | ||
4073 | return (type != bp_watchpoint | |
4074 | && type != bp_hardware_watchpoint | |
4075 | && type != bp_read_watchpoint | |
4076 | && type != bp_access_watchpoint | |
fe798b75 | 4077 | && type != bp_catchpoint); |
e4f237da KB |
4078 | } |
4079 | ||
9f60f21b | 4080 | /* Rescan breakpoints at the same address and section as BPT, |
c906108c | 4081 | marking the first one as "first" and any others as "duplicates". |
c2c6d25f | 4082 | This is so that the bpt instruction is only inserted once. |
9f60f21b JB |
4083 | If we have a permanent breakpoint at the same place as BPT, make |
4084 | that one the official one, and the rest as duplicates. */ | |
c906108c SS |
4085 | |
4086 | static void | |
714835d5 | 4087 | check_duplicates_for (CORE_ADDR address, struct obj_section *section) |
c906108c | 4088 | { |
075f6582 | 4089 | struct bp_location *b; |
52f0bd74 | 4090 | int count = 0; |
075f6582 | 4091 | struct bp_location *perm_bp = 0; |
c906108c | 4092 | |
075f6582 DJ |
4093 | ALL_BP_LOCATIONS (b) |
4094 | if (b->owner->enable_state != bp_disabled | |
075f6582 | 4095 | && b->owner->enable_state != bp_call_disabled |
0d381245 VP |
4096 | && b->enabled |
4097 | && !b->shlib_disabled | |
075f6582 DJ |
4098 | && b->address == address /* address / overlay match */ |
4099 | && (!overlay_debugging || b->section == section) | |
4100 | && breakpoint_address_is_meaningful (b->owner)) | |
c5aa993b | 4101 | { |
c2c6d25f | 4102 | /* Have we found a permanent breakpoint? */ |
075f6582 | 4103 | if (b->owner->enable_state == bp_permanent) |
c2c6d25f JM |
4104 | { |
4105 | perm_bp = b; | |
4106 | break; | |
4107 | } | |
4108 | ||
c5aa993b | 4109 | count++; |
075f6582 | 4110 | b->duplicate = count > 1; |
c5aa993b | 4111 | } |
c2c6d25f JM |
4112 | |
4113 | /* If we found a permanent breakpoint at this address, go over the | |
4114 | list again and declare all the other breakpoints there to be the | |
4115 | duplicates. */ | |
4116 | if (perm_bp) | |
4117 | { | |
075f6582 | 4118 | perm_bp->duplicate = 0; |
c2c6d25f JM |
4119 | |
4120 | /* Permanent breakpoint should always be inserted. */ | |
075f6582 | 4121 | if (! perm_bp->inserted) |
8e65ff28 | 4122 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 AC |
4123 | _("allegedly permanent breakpoint is not " |
4124 | "actually inserted")); | |
c2c6d25f | 4125 | |
075f6582 | 4126 | ALL_BP_LOCATIONS (b) |
c2c6d25f JM |
4127 | if (b != perm_bp) |
4128 | { | |
075f6582 | 4129 | if (b->owner->enable_state != bp_disabled |
075f6582 | 4130 | && b->owner->enable_state != bp_call_disabled |
0d381245 | 4131 | && b->enabled && !b->shlib_disabled |
075f6582 DJ |
4132 | && b->address == address /* address / overlay match */ |
4133 | && (!overlay_debugging || b->section == section) | |
4134 | && breakpoint_address_is_meaningful (b->owner)) | |
4135 | { | |
4136 | if (b->inserted) | |
4137 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 AC |
4138 | _("another breakpoint was inserted on top of " |
4139 | "a permanent breakpoint")); | |
075f6582 DJ |
4140 | |
4141 | b->duplicate = 1; | |
4142 | } | |
c2c6d25f JM |
4143 | } |
4144 | } | |
c906108c SS |
4145 | } |
4146 | ||
0d381245 VP |
4147 | static void |
4148 | check_duplicates (struct breakpoint *bpt) | |
4149 | { | |
4150 | struct bp_location *bl = bpt->loc; | |
4151 | ||
4152 | if (! breakpoint_address_is_meaningful (bpt)) | |
4153 | return; | |
4154 | ||
4155 | for (; bl; bl = bl->next) | |
4156 | check_duplicates_for (bl->address, bl->section); | |
4157 | } | |
4158 | ||
76897487 KB |
4159 | static void |
4160 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
4161 | int bnum, int have_bnum) | |
4162 | { | |
4163 | char astr1[40]; | |
4164 | char astr2[40]; | |
4165 | ||
bb599908 PH |
4166 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
4167 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 4168 | if (have_bnum) |
8a3fe4f8 | 4169 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
4170 | bnum, astr1, astr2); |
4171 | else | |
8a3fe4f8 | 4172 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
4173 | } |
4174 | ||
4175 | /* Adjust a breakpoint's address to account for architectural constraints | |
4176 | on breakpoint placement. Return the adjusted address. Note: Very | |
4177 | few targets require this kind of adjustment. For most targets, | |
4178 | this function is simply the identity function. */ | |
4179 | ||
4180 | static CORE_ADDR | |
88f7da05 | 4181 | adjust_breakpoint_address (CORE_ADDR bpaddr, enum bptype bptype) |
76897487 KB |
4182 | { |
4183 | if (!gdbarch_adjust_breakpoint_address_p (current_gdbarch)) | |
4184 | { | |
4185 | /* Very few targets need any kind of breakpoint adjustment. */ | |
4186 | return bpaddr; | |
4187 | } | |
88f7da05 KB |
4188 | else if (bptype == bp_watchpoint |
4189 | || bptype == bp_hardware_watchpoint | |
4190 | || bptype == bp_read_watchpoint | |
4191 | || bptype == bp_access_watchpoint | |
fe798b75 | 4192 | || bptype == bp_catchpoint) |
88f7da05 KB |
4193 | { |
4194 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
4195 | have their addresses modified. */ | |
4196 | return bpaddr; | |
4197 | } | |
76897487 KB |
4198 | else |
4199 | { | |
4200 | CORE_ADDR adjusted_bpaddr; | |
4201 | ||
4202 | /* Some targets have architectural constraints on the placement | |
4203 | of breakpoint instructions. Obtain the adjusted address. */ | |
4204 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (current_gdbarch, | |
4205 | bpaddr); | |
4206 | ||
4207 | /* An adjusted breakpoint address can significantly alter | |
4208 | a user's expectations. Print a warning if an adjustment | |
4209 | is required. */ | |
4210 | if (adjusted_bpaddr != bpaddr) | |
4211 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
4212 | ||
4213 | return adjusted_bpaddr; | |
4214 | } | |
4215 | } | |
4216 | ||
7cc221ef DJ |
4217 | /* Allocate a struct bp_location. */ |
4218 | ||
26bb91f3 | 4219 | static struct bp_location * |
e049a4b5 | 4220 | allocate_bp_location (struct breakpoint *bpt, enum bptype bp_type) |
7cc221ef DJ |
4221 | { |
4222 | struct bp_location *loc, *loc_p; | |
4223 | ||
4224 | loc = xmalloc (sizeof (struct bp_location)); | |
4225 | memset (loc, 0, sizeof (*loc)); | |
4226 | ||
e049a4b5 | 4227 | loc->owner = bpt; |
511a6cd4 | 4228 | loc->cond = NULL; |
0d381245 VP |
4229 | loc->shlib_disabled = 0; |
4230 | loc->enabled = 1; | |
e049a4b5 DJ |
4231 | |
4232 | switch (bp_type) | |
4233 | { | |
4234 | case bp_breakpoint: | |
4235 | case bp_until: | |
4236 | case bp_finish: | |
4237 | case bp_longjmp: | |
4238 | case bp_longjmp_resume: | |
4239 | case bp_step_resume: | |
e049a4b5 DJ |
4240 | case bp_watchpoint_scope: |
4241 | case bp_call_dummy: | |
4242 | case bp_shlib_event: | |
4243 | case bp_thread_event: | |
4244 | case bp_overlay_event: | |
4245 | case bp_catch_load: | |
4246 | case bp_catch_unload: | |
4247 | loc->loc_type = bp_loc_software_breakpoint; | |
4248 | break; | |
4249 | case bp_hardware_breakpoint: | |
4250 | loc->loc_type = bp_loc_hardware_breakpoint; | |
4251 | break; | |
4252 | case bp_hardware_watchpoint: | |
4253 | case bp_read_watchpoint: | |
4254 | case bp_access_watchpoint: | |
4255 | loc->loc_type = bp_loc_hardware_watchpoint; | |
4256 | break; | |
4257 | case bp_watchpoint: | |
ce78b96d | 4258 | case bp_catchpoint: |
e049a4b5 DJ |
4259 | loc->loc_type = bp_loc_other; |
4260 | break; | |
4261 | default: | |
e2e0b3e5 | 4262 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
4263 | } |
4264 | ||
7cc221ef DJ |
4265 | return loc; |
4266 | } | |
4267 | ||
fe3f5fa8 VP |
4268 | static void free_bp_location (struct bp_location *loc) |
4269 | { | |
4270 | if (loc->cond) | |
4271 | xfree (loc->cond); | |
74960c60 VP |
4272 | |
4273 | if (loc->function_name) | |
4274 | xfree (loc->function_name); | |
4275 | ||
fe3f5fa8 VP |
4276 | xfree (loc); |
4277 | } | |
4278 | ||
0d381245 VP |
4279 | /* Helper to set_raw_breakpoint below. Creates a breakpoint |
4280 | that has type BPTYPE and has no locations as yet. */ | |
c906108c | 4281 | |
c40e75cd | 4282 | static struct breakpoint * |
0d381245 | 4283 | set_raw_breakpoint_without_location (enum bptype bptype) |
c906108c | 4284 | { |
52f0bd74 | 4285 | struct breakpoint *b, *b1; |
c906108c SS |
4286 | |
4287 | b = (struct breakpoint *) xmalloc (sizeof (struct breakpoint)); | |
4288 | memset (b, 0, sizeof (*b)); | |
2219d63c | 4289 | |
4d28f7a8 | 4290 | b->type = bptype; |
c906108c SS |
4291 | b->language = current_language->la_language; |
4292 | b->input_radix = input_radix; | |
4293 | b->thread = -1; | |
b5de0fa7 | 4294 | b->enable_state = bp_enabled; |
c906108c SS |
4295 | b->next = 0; |
4296 | b->silent = 0; | |
4297 | b->ignore_count = 0; | |
4298 | b->commands = NULL; | |
818dd999 | 4299 | b->frame_id = null_frame_id; |
c906108c SS |
4300 | b->dll_pathname = NULL; |
4301 | b->triggered_dll_pathname = NULL; | |
3a3e9ee3 | 4302 | b->forked_inferior_pid = null_ptid; |
c906108c | 4303 | b->exec_pathname = NULL; |
3086aeae | 4304 | b->ops = NULL; |
0d381245 | 4305 | b->condition_not_parsed = 0; |
c906108c SS |
4306 | |
4307 | /* Add this breakpoint to the end of the chain | |
4308 | so that a list of breakpoints will come out in order | |
4309 | of increasing numbers. */ | |
4310 | ||
4311 | b1 = breakpoint_chain; | |
4312 | if (b1 == 0) | |
4313 | breakpoint_chain = b; | |
4314 | else | |
4315 | { | |
4316 | while (b1->next) | |
4317 | b1 = b1->next; | |
4318 | b1->next = b; | |
4319 | } | |
0d381245 VP |
4320 | return b; |
4321 | } | |
4322 | ||
4323 | /* Initialize loc->function_name. */ | |
4324 | static void | |
4325 | set_breakpoint_location_function (struct bp_location *loc) | |
4326 | { | |
4327 | if (loc->owner->type == bp_breakpoint | |
4328 | || loc->owner->type == bp_hardware_breakpoint) | |
4329 | { | |
4330 | find_pc_partial_function (loc->address, &(loc->function_name), | |
4331 | NULL, NULL); | |
4332 | if (loc->function_name) | |
4333 | loc->function_name = xstrdup (loc->function_name); | |
4334 | } | |
4335 | } | |
4336 | ||
4337 | /* set_raw_breakpoint is a low level routine for allocating and | |
4338 | partially initializing a breakpoint of type BPTYPE. The newly | |
4339 | created breakpoint's address, section, source file name, and line | |
4340 | number are provided by SAL. The newly created and partially | |
4341 | initialized breakpoint is added to the breakpoint chain and | |
4342 | is also returned as the value of this function. | |
4343 | ||
4344 | It is expected that the caller will complete the initialization of | |
4345 | the newly created breakpoint struct as well as output any status | |
4346 | information regarding the creation of a new breakpoint. In | |
4347 | particular, set_raw_breakpoint does NOT set the breakpoint | |
4348 | number! Care should be taken to not allow an error to occur | |
4349 | prior to completing the initialization of the breakpoint. If this | |
4350 | should happen, a bogus breakpoint will be left on the chain. */ | |
4351 | ||
4352 | struct breakpoint * | |
4353 | set_raw_breakpoint (struct symtab_and_line sal, enum bptype bptype) | |
4354 | { | |
4355 | struct breakpoint *b = set_raw_breakpoint_without_location (bptype); | |
4356 | CORE_ADDR adjusted_address; | |
4357 | ||
4358 | /* Adjust the breakpoint's address prior to allocating a location. | |
4359 | Once we call allocate_bp_location(), that mostly uninitialized | |
4360 | location will be placed on the location chain. Adjustment of the | |
8defab1a | 4361 | breakpoint may cause target_read_memory() to be called and we do |
0d381245 VP |
4362 | not want its scan of the location chain to find a breakpoint and |
4363 | location that's only been partially initialized. */ | |
4364 | adjusted_address = adjust_breakpoint_address (sal.pc, bptype); | |
4365 | ||
4366 | b->loc = allocate_bp_location (b, bptype); | |
4367 | b->loc->requested_address = sal.pc; | |
4368 | b->loc->address = adjusted_address; | |
4369 | ||
4370 | if (sal.symtab == NULL) | |
4371 | b->source_file = NULL; | |
4372 | else | |
4373 | b->source_file = savestring (sal.symtab->filename, | |
4374 | strlen (sal.symtab->filename)); | |
4375 | b->loc->section = sal.section; | |
4376 | b->line_number = sal.line; | |
4377 | ||
4378 | set_breakpoint_location_function (b->loc); | |
c906108c | 4379 | |
c906108c SS |
4380 | breakpoints_changed (); |
4381 | ||
4382 | return b; | |
4383 | } | |
4384 | ||
c2c6d25f JM |
4385 | |
4386 | /* Note that the breakpoint object B describes a permanent breakpoint | |
4387 | instruction, hard-wired into the inferior's code. */ | |
4388 | void | |
4389 | make_breakpoint_permanent (struct breakpoint *b) | |
4390 | { | |
0d381245 | 4391 | struct bp_location *bl; |
b5de0fa7 | 4392 | b->enable_state = bp_permanent; |
c2c6d25f | 4393 | |
0d381245 VP |
4394 | /* By definition, permanent breakpoints are already present in the code. |
4395 | Mark all locations as inserted. For now, make_breakpoint_permanent | |
4396 | is called in just one place, so it's hard to say if it's reasonable | |
4397 | to have permanent breakpoint with multiple locations or not, | |
4398 | but it's easy to implmement. */ | |
4399 | for (bl = b->loc; bl; bl = bl->next) | |
4400 | bl->inserted = 1; | |
c2c6d25f JM |
4401 | } |
4402 | ||
1900040c MS |
4403 | static struct breakpoint * |
4404 | create_internal_breakpoint (CORE_ADDR address, enum bptype type) | |
4405 | { | |
4406 | static int internal_breakpoint_number = -1; | |
4407 | struct symtab_and_line sal; | |
4408 | struct breakpoint *b; | |
4409 | ||
fe39c653 | 4410 | init_sal (&sal); /* initialize to zeroes */ |
1900040c MS |
4411 | |
4412 | sal.pc = address; | |
4413 | sal.section = find_pc_overlay (sal.pc); | |
4414 | ||
4415 | b = set_raw_breakpoint (sal, type); | |
4416 | b->number = internal_breakpoint_number--; | |
4417 | b->disposition = disp_donttouch; | |
4418 | ||
4419 | return b; | |
4420 | } | |
4421 | ||
c906108c SS |
4422 | |
4423 | static void | |
fba45db2 | 4424 | create_longjmp_breakpoint (char *func_name) |
c906108c | 4425 | { |
1900040c | 4426 | struct minimal_symbol *m; |
c906108c | 4427 | |
611c83ae PA |
4428 | if ((m = lookup_minimal_symbol_text (func_name, NULL)) == NULL) |
4429 | return; | |
4430 | set_momentary_breakpoint_at_pc (SYMBOL_VALUE_ADDRESS (m), bp_longjmp); | |
b60e7edf | 4431 | update_global_location_list (1); |
c906108c SS |
4432 | } |
4433 | ||
53a5351d JM |
4434 | /* Call this routine when stepping and nexting to enable a breakpoint |
4435 | if we do a longjmp(). When we hit that breakpoint, call | |
c906108c SS |
4436 | set_longjmp_resume_breakpoint() to figure out where we are going. */ |
4437 | ||
4438 | void | |
611c83ae | 4439 | set_longjmp_breakpoint (void) |
c906108c | 4440 | { |
611c83ae | 4441 | if (gdbarch_get_longjmp_target_p (current_gdbarch)) |
c5aa993b | 4442 | { |
611c83ae PA |
4443 | create_longjmp_breakpoint ("longjmp"); |
4444 | create_longjmp_breakpoint ("_longjmp"); | |
4445 | create_longjmp_breakpoint ("siglongjmp"); | |
4446 | create_longjmp_breakpoint ("_siglongjmp"); | |
c5aa993b | 4447 | } |
c906108c SS |
4448 | } |
4449 | ||
611c83ae | 4450 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 4451 | void |
611c83ae | 4452 | delete_longjmp_breakpoint (int thread) |
c906108c | 4453 | { |
611c83ae | 4454 | struct breakpoint *b, *temp; |
c906108c | 4455 | |
611c83ae PA |
4456 | ALL_BREAKPOINTS_SAFE (b, temp) |
4457 | if (b->type == bp_longjmp) | |
4458 | { | |
4459 | if (b->thread == thread) | |
4460 | delete_breakpoint (b); | |
4461 | } | |
c906108c SS |
4462 | } |
4463 | ||
1900040c | 4464 | static void |
25db0f1b | 4465 | create_overlay_event_breakpoint_1 (char *func_name, struct objfile *objfile) |
1900040c MS |
4466 | { |
4467 | struct breakpoint *b; | |
4468 | struct minimal_symbol *m; | |
4469 | ||
25db0f1b | 4470 | if ((m = lookup_minimal_symbol_text (func_name, objfile)) == NULL) |
1900040c MS |
4471 | return; |
4472 | ||
4473 | b = create_internal_breakpoint (SYMBOL_VALUE_ADDRESS (m), | |
4474 | bp_overlay_event); | |
4475 | b->addr_string = xstrdup (func_name); | |
4476 | ||
4477 | if (overlay_debugging == ovly_auto) | |
c02f5703 MS |
4478 | { |
4479 | b->enable_state = bp_enabled; | |
4480 | overlay_events_enabled = 1; | |
4481 | } | |
1900040c | 4482 | else |
c02f5703 MS |
4483 | { |
4484 | b->enable_state = bp_disabled; | |
4485 | overlay_events_enabled = 0; | |
4486 | } | |
b60e7edf | 4487 | update_global_location_list (1); |
1900040c MS |
4488 | } |
4489 | ||
25db0f1b UW |
4490 | static void |
4491 | create_overlay_event_breakpoint (char *func_name) | |
4492 | { | |
4493 | struct objfile *objfile; | |
4494 | ALL_OBJFILES (objfile) | |
4495 | create_overlay_event_breakpoint_1 (func_name, objfile); | |
4496 | } | |
4497 | ||
1900040c MS |
4498 | void |
4499 | enable_overlay_breakpoints (void) | |
4500 | { | |
52f0bd74 | 4501 | struct breakpoint *b; |
1900040c MS |
4502 | |
4503 | ALL_BREAKPOINTS (b) | |
4504 | if (b->type == bp_overlay_event) | |
4505 | { | |
4506 | b->enable_state = bp_enabled; | |
b60e7edf | 4507 | update_global_location_list (1); |
c02f5703 | 4508 | overlay_events_enabled = 1; |
1900040c MS |
4509 | } |
4510 | } | |
4511 | ||
4512 | void | |
4513 | disable_overlay_breakpoints (void) | |
4514 | { | |
52f0bd74 | 4515 | struct breakpoint *b; |
1900040c MS |
4516 | |
4517 | ALL_BREAKPOINTS (b) | |
4518 | if (b->type == bp_overlay_event) | |
4519 | { | |
4520 | b->enable_state = bp_disabled; | |
b60e7edf | 4521 | update_global_location_list (0); |
c02f5703 | 4522 | overlay_events_enabled = 0; |
1900040c MS |
4523 | } |
4524 | } | |
4525 | ||
c4093a6a | 4526 | struct breakpoint * |
fba45db2 | 4527 | create_thread_event_breakpoint (CORE_ADDR address) |
c4093a6a JM |
4528 | { |
4529 | struct breakpoint *b; | |
c4093a6a | 4530 | |
1900040c | 4531 | b = create_internal_breakpoint (address, bp_thread_event); |
c4093a6a | 4532 | |
b5de0fa7 | 4533 | b->enable_state = bp_enabled; |
c4093a6a | 4534 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
b435e160 | 4535 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); |
c4093a6a | 4536 | |
b60e7edf | 4537 | update_global_location_list_nothrow (1); |
74960c60 | 4538 | |
c4093a6a JM |
4539 | return b; |
4540 | } | |
4541 | ||
4542 | void | |
4543 | remove_thread_event_breakpoints (void) | |
4544 | { | |
4545 | struct breakpoint *b, *temp; | |
4546 | ||
4547 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4548 | if (b->type == bp_thread_event) | |
4549 | delete_breakpoint (b); | |
4550 | } | |
4551 | ||
0101ce28 JJ |
4552 | struct captured_parse_breakpoint_args |
4553 | { | |
4554 | char **arg_p; | |
4555 | struct symtabs_and_lines *sals_p; | |
4556 | char ***addr_string_p; | |
4557 | int *not_found_ptr; | |
4558 | }; | |
4559 | ||
4560 | struct lang_and_radix | |
4561 | { | |
4562 | enum language lang; | |
4563 | int radix; | |
4564 | }; | |
4565 | ||
0101ce28 | 4566 | |
cae688ec JJ |
4567 | void |
4568 | remove_solib_event_breakpoints (void) | |
4569 | { | |
4570 | struct breakpoint *b, *temp; | |
4571 | ||
4572 | ALL_BREAKPOINTS_SAFE (b, temp) | |
4573 | if (b->type == bp_shlib_event) | |
4574 | delete_breakpoint (b); | |
4575 | } | |
4576 | ||
4577 | struct breakpoint * | |
4578 | create_solib_event_breakpoint (CORE_ADDR address) | |
4579 | { | |
4580 | struct breakpoint *b; | |
4581 | ||
4582 | b = create_internal_breakpoint (address, bp_shlib_event); | |
b60e7edf | 4583 | update_global_location_list_nothrow (1); |
cae688ec JJ |
4584 | return b; |
4585 | } | |
4586 | ||
4587 | /* Disable any breakpoints that are on code in shared libraries. Only | |
4588 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4589 | ||
4590 | void | |
cb851954 | 4591 | disable_breakpoints_in_shlibs (void) |
cae688ec | 4592 | { |
0d381245 | 4593 | struct bp_location *loc; |
cae688ec JJ |
4594 | int disabled_shlib_breaks = 0; |
4595 | ||
0d381245 | 4596 | ALL_BP_LOCATIONS (loc) |
cae688ec | 4597 | { |
0d381245 VP |
4598 | struct breakpoint *b = loc->owner; |
4599 | /* We apply the check to all breakpoints, including disabled | |
4600 | for those with loc->duplicate set. This is so that when breakpoint | |
4601 | becomes enabled, or the duplicate is removed, gdb will try to insert | |
4602 | all breakpoints. If we don't set shlib_disabled here, we'll try | |
4603 | to insert those breakpoints and fail. */ | |
a77053c2 | 4604 | if (((b->type == bp_breakpoint) || (b->type == bp_hardware_breakpoint)) |
0d381245 | 4605 | && !loc->shlib_disabled |
a77053c2 | 4606 | #ifdef PC_SOLIB |
0d381245 | 4607 | && PC_SOLIB (loc->address) |
a77053c2 | 4608 | #else |
0d381245 | 4609 | && solib_address (loc->address) |
a77053c2 MK |
4610 | #endif |
4611 | ) | |
0d381245 VP |
4612 | { |
4613 | loc->shlib_disabled = 1; | |
4614 | } | |
cae688ec JJ |
4615 | } |
4616 | } | |
4617 | ||
84acb35a JJ |
4618 | /* Disable any breakpoints that are in in an unloaded shared library. Only |
4619 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
4620 | ||
75149521 | 4621 | static void |
84acb35a JJ |
4622 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
4623 | { | |
0d381245 | 4624 | struct bp_location *loc; |
84acb35a JJ |
4625 | int disabled_shlib_breaks = 0; |
4626 | ||
0d381245 | 4627 | ALL_BP_LOCATIONS (loc) |
84acb35a | 4628 | { |
0d381245 VP |
4629 | struct breakpoint *b = loc->owner; |
4630 | if ((loc->loc_type == bp_loc_hardware_breakpoint | |
4631 | || loc->loc_type == bp_loc_software_breakpoint) | |
4632 | && !loc->shlib_disabled) | |
84acb35a | 4633 | { |
a77053c2 | 4634 | #ifdef PC_SOLIB |
0d381245 | 4635 | char *so_name = PC_SOLIB (loc->address); |
a77053c2 | 4636 | #else |
0d381245 | 4637 | char *so_name = solib_address (loc->address); |
a77053c2 MK |
4638 | #endif |
4639 | if (so_name && !strcmp (so_name, solib->so_name)) | |
84acb35a | 4640 | { |
0d381245 | 4641 | loc->shlib_disabled = 1; |
84acb35a JJ |
4642 | /* At this point, we cannot rely on remove_breakpoint |
4643 | succeeding so we must mark the breakpoint as not inserted | |
4644 | to prevent future errors occurring in remove_breakpoints. */ | |
0d381245 | 4645 | loc->inserted = 0; |
84acb35a JJ |
4646 | if (!disabled_shlib_breaks) |
4647 | { | |
4648 | target_terminal_ours_for_output (); | |
8a3fe4f8 | 4649 | warning (_("Temporarily disabling breakpoints for unloaded shared library \"%s\""), |
84acb35a JJ |
4650 | so_name); |
4651 | } | |
4652 | disabled_shlib_breaks = 1; | |
4653 | } | |
4654 | } | |
4655 | } | |
84acb35a JJ |
4656 | } |
4657 | ||
ce78b96d JB |
4658 | /* FORK & VFORK catchpoints. */ |
4659 | ||
4660 | /* Implement the "insert" breakpoint_ops method for fork catchpoints. */ | |
4661 | ||
c906108c | 4662 | static void |
ce78b96d JB |
4663 | insert_catch_fork (struct breakpoint *b) |
4664 | { | |
4665 | target_insert_fork_catchpoint (PIDGET (inferior_ptid)); | |
4666 | } | |
4667 | ||
4668 | /* Implement the "remove" breakpoint_ops method for fork catchpoints. */ | |
4669 | ||
4670 | static int | |
4671 | remove_catch_fork (struct breakpoint *b) | |
4672 | { | |
4673 | return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); | |
4674 | } | |
4675 | ||
4676 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
4677 | catchpoints. */ | |
4678 | ||
4679 | static int | |
4680 | breakpoint_hit_catch_fork (struct breakpoint *b) | |
4681 | { | |
4682 | return inferior_has_forked (inferior_ptid, &b->forked_inferior_pid); | |
4683 | } | |
4684 | ||
4685 | /* Implement the "print_it" breakpoint_ops method for fork catchpoints. */ | |
4686 | ||
4687 | static enum print_stop_action | |
4688 | print_it_catch_fork (struct breakpoint *b) | |
4689 | { | |
4690 | annotate_catchpoint (b->number); | |
4691 | printf_filtered (_("\nCatchpoint %d (forked process %d), "), | |
4692 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
4693 | return PRINT_SRC_AND_LOC; | |
4694 | } | |
4695 | ||
4696 | /* Implement the "print_one" breakpoint_ops method for fork catchpoints. */ | |
4697 | ||
4698 | static void | |
4699 | print_one_catch_fork (struct breakpoint *b, CORE_ADDR *last_addr) | |
4700 | { | |
79a45b7d TT |
4701 | struct value_print_options opts; |
4702 | ||
4703 | get_user_print_options (&opts); | |
4704 | ||
ce78b96d JB |
4705 | /* Field 4, the address, is omitted (which makes the columns |
4706 | not line up too nicely with the headers, but the effect | |
4707 | is relatively readable). */ | |
79a45b7d | 4708 | if (opts.addressprint) |
ce78b96d JB |
4709 | ui_out_field_skip (uiout, "addr"); |
4710 | annotate_field (5); | |
4711 | ui_out_text (uiout, "fork"); | |
4712 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
4713 | { | |
4714 | ui_out_text (uiout, ", process "); | |
4715 | ui_out_field_int (uiout, "what", | |
4716 | ptid_get_pid (b->forked_inferior_pid)); | |
4717 | ui_out_spaces (uiout, 1); | |
4718 | } | |
4719 | } | |
4720 | ||
4721 | /* Implement the "print_mention" breakpoint_ops method for fork | |
4722 | catchpoints. */ | |
4723 | ||
4724 | static void | |
4725 | print_mention_catch_fork (struct breakpoint *b) | |
4726 | { | |
4727 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
4728 | } | |
4729 | ||
4730 | /* The breakpoint_ops structure to be used in fork catchpoints. */ | |
4731 | ||
4732 | static struct breakpoint_ops catch_fork_breakpoint_ops = | |
4733 | { | |
4734 | insert_catch_fork, | |
4735 | remove_catch_fork, | |
4736 | breakpoint_hit_catch_fork, | |
4737 | print_it_catch_fork, | |
4738 | print_one_catch_fork, | |
4739 | print_mention_catch_fork | |
4740 | }; | |
4741 | ||
4742 | /* Implement the "insert" breakpoint_ops method for vfork catchpoints. */ | |
4743 | ||
4744 | static void | |
4745 | insert_catch_vfork (struct breakpoint *b) | |
4746 | { | |
4747 | target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); | |
4748 | } | |
4749 | ||
4750 | /* Implement the "remove" breakpoint_ops method for vfork catchpoints. */ | |
4751 | ||
4752 | static int | |
4753 | remove_catch_vfork (struct breakpoint *b) | |
4754 | { | |
4755 | return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); | |
4756 | } | |
4757 | ||
4758 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
4759 | catchpoints. */ | |
4760 | ||
4761 | static int | |
4762 | breakpoint_hit_catch_vfork (struct breakpoint *b) | |
4763 | { | |
4764 | return inferior_has_vforked (inferior_ptid, &b->forked_inferior_pid); | |
4765 | } | |
4766 | ||
4767 | /* Implement the "print_it" breakpoint_ops method for vfork catchpoints. */ | |
4768 | ||
4769 | static enum print_stop_action | |
4770 | print_it_catch_vfork (struct breakpoint *b) | |
4771 | { | |
4772 | annotate_catchpoint (b->number); | |
4773 | printf_filtered (_("\nCatchpoint %d (vforked process %d), "), | |
4774 | b->number, ptid_get_pid (b->forked_inferior_pid)); | |
4775 | return PRINT_SRC_AND_LOC; | |
4776 | } | |
4777 | ||
4778 | /* Implement the "print_one" breakpoint_ops method for vfork catchpoints. */ | |
4779 | ||
4780 | static void | |
4781 | print_one_catch_vfork (struct breakpoint *b, CORE_ADDR *last_addr) | |
4782 | { | |
79a45b7d TT |
4783 | struct value_print_options opts; |
4784 | ||
4785 | get_user_print_options (&opts); | |
ce78b96d JB |
4786 | /* Field 4, the address, is omitted (which makes the columns |
4787 | not line up too nicely with the headers, but the effect | |
4788 | is relatively readable). */ | |
79a45b7d | 4789 | if (opts.addressprint) |
ce78b96d JB |
4790 | ui_out_field_skip (uiout, "addr"); |
4791 | annotate_field (5); | |
4792 | ui_out_text (uiout, "vfork"); | |
4793 | if (!ptid_equal (b->forked_inferior_pid, null_ptid)) | |
4794 | { | |
4795 | ui_out_text (uiout, ", process "); | |
4796 | ui_out_field_int (uiout, "what", | |
4797 | ptid_get_pid (b->forked_inferior_pid)); | |
4798 | ui_out_spaces (uiout, 1); | |
4799 | } | |
4800 | } | |
4801 | ||
4802 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
4803 | catchpoints. */ | |
4804 | ||
4805 | static void | |
4806 | print_mention_catch_vfork (struct breakpoint *b) | |
4807 | { | |
4808 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
4809 | } | |
4810 | ||
4811 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ | |
4812 | ||
4813 | static struct breakpoint_ops catch_vfork_breakpoint_ops = | |
4814 | { | |
4815 | insert_catch_vfork, | |
4816 | remove_catch_vfork, | |
4817 | breakpoint_hit_catch_vfork, | |
4818 | print_it_catch_vfork, | |
4819 | print_one_catch_vfork, | |
4820 | print_mention_catch_vfork | |
4821 | }; | |
4822 | ||
4823 | /* Create a new breakpoint of the bp_catchpoint kind and return it. | |
4824 | ||
4825 | If TEMPFLAG is non-zero, then make the breakpoint temporary. | |
4826 | If COND_STRING is not NULL, then store it in the breakpoint. | |
4827 | OPS, if not NULL, is the breakpoint_ops structure associated | |
4828 | to the catchpoint. */ | |
4829 | ||
4830 | static struct breakpoint * | |
4831 | create_catchpoint (int tempflag, char *cond_string, | |
4832 | struct breakpoint_ops *ops) | |
c906108c | 4833 | { |
c5aa993b JM |
4834 | struct symtab_and_line sal; |
4835 | struct breakpoint *b; | |
c5aa993b | 4836 | |
fe39c653 | 4837 | init_sal (&sal); |
c906108c SS |
4838 | sal.pc = 0; |
4839 | sal.symtab = NULL; | |
4840 | sal.line = 0; | |
c5aa993b | 4841 | |
ce78b96d | 4842 | b = set_raw_breakpoint (sal, bp_catchpoint); |
c906108c SS |
4843 | set_breakpoint_count (breakpoint_count + 1); |
4844 | b->number = breakpoint_count; | |
ce78b96d | 4845 | |
53a5351d JM |
4846 | b->cond_string = (cond_string == NULL) ? |
4847 | NULL : savestring (cond_string, strlen (cond_string)); | |
ce78b96d | 4848 | b->thread = -1; |
c906108c | 4849 | b->addr_string = NULL; |
b5de0fa7 EZ |
4850 | b->enable_state = bp_enabled; |
4851 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
ce78b96d | 4852 | b->ops = ops; |
c5aa993b | 4853 | |
c906108c | 4854 | mention (b); |
ce78b96d | 4855 | update_global_location_list (1); |
c906108c | 4856 | |
ce78b96d | 4857 | return b; |
c906108c | 4858 | } |
c5aa993b | 4859 | |
9b70b993 | 4860 | static void |
ce78b96d JB |
4861 | create_fork_vfork_event_catchpoint (int tempflag, char *cond_string, |
4862 | struct breakpoint_ops *ops) | |
c906108c | 4863 | { |
ce78b96d JB |
4864 | struct breakpoint *b = create_catchpoint (tempflag, cond_string, ops); |
4865 | ||
4866 | /* FIXME: We should put this information in a breakpoint private data | |
4867 | area. */ | |
4868 | b->forked_inferior_pid = null_ptid; | |
c906108c SS |
4869 | } |
4870 | ||
fe798b75 JB |
4871 | /* Exec catchpoints. */ |
4872 | ||
9b70b993 | 4873 | static void |
fe798b75 | 4874 | insert_catch_exec (struct breakpoint *b) |
c906108c | 4875 | { |
fe798b75 JB |
4876 | target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
4877 | } | |
c906108c | 4878 | |
fe798b75 JB |
4879 | static int |
4880 | remove_catch_exec (struct breakpoint *b) | |
4881 | { | |
4882 | return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); | |
4883 | } | |
c906108c | 4884 | |
fe798b75 JB |
4885 | static int |
4886 | breakpoint_hit_catch_exec (struct breakpoint *b) | |
4887 | { | |
4888 | return inferior_has_execd (inferior_ptid, &b->exec_pathname); | |
4889 | } | |
c906108c | 4890 | |
fe798b75 JB |
4891 | static enum print_stop_action |
4892 | print_it_catch_exec (struct breakpoint *b) | |
4893 | { | |
4894 | annotate_catchpoint (b->number); | |
4895 | printf_filtered (_("\nCatchpoint %d (exec'd %s), "), b->number, | |
4896 | b->exec_pathname); | |
4897 | return PRINT_SRC_AND_LOC; | |
c906108c SS |
4898 | } |
4899 | ||
fe798b75 JB |
4900 | static void |
4901 | print_one_catch_exec (struct breakpoint *b, CORE_ADDR *last_addr) | |
4902 | { | |
4903 | struct value_print_options opts; | |
4904 | ||
4905 | get_user_print_options (&opts); | |
4906 | ||
4907 | /* Field 4, the address, is omitted (which makes the columns | |
4908 | not line up too nicely with the headers, but the effect | |
4909 | is relatively readable). */ | |
4910 | if (opts.addressprint) | |
4911 | ui_out_field_skip (uiout, "addr"); | |
4912 | annotate_field (5); | |
4913 | ui_out_text (uiout, "exec"); | |
4914 | if (b->exec_pathname != NULL) | |
4915 | { | |
4916 | ui_out_text (uiout, ", program \""); | |
4917 | ui_out_field_string (uiout, "what", b->exec_pathname); | |
4918 | ui_out_text (uiout, "\" "); | |
4919 | } | |
4920 | } | |
4921 | ||
4922 | static void | |
4923 | print_mention_catch_exec (struct breakpoint *b) | |
4924 | { | |
4925 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
4926 | } | |
4927 | ||
4928 | static struct breakpoint_ops catch_exec_breakpoint_ops = | |
4929 | { | |
4930 | insert_catch_exec, | |
4931 | remove_catch_exec, | |
4932 | breakpoint_hit_catch_exec, | |
4933 | print_it_catch_exec, | |
4934 | print_one_catch_exec, | |
4935 | print_mention_catch_exec | |
4936 | }; | |
4937 | ||
c906108c | 4938 | static int |
fba45db2 | 4939 | hw_breakpoint_used_count (void) |
c906108c | 4940 | { |
52f0bd74 | 4941 | struct breakpoint *b; |
c906108c SS |
4942 | int i = 0; |
4943 | ||
4944 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4945 | { |
d6b74ac4 | 4946 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
c5aa993b JM |
4947 | i++; |
4948 | } | |
c906108c SS |
4949 | |
4950 | return i; | |
4951 | } | |
4952 | ||
4953 | static int | |
fba45db2 | 4954 | hw_watchpoint_used_count (enum bptype type, int *other_type_used) |
c906108c | 4955 | { |
52f0bd74 | 4956 | struct breakpoint *b; |
c906108c SS |
4957 | int i = 0; |
4958 | ||
4959 | *other_type_used = 0; | |
4960 | ALL_BREAKPOINTS (b) | |
c5aa993b | 4961 | { |
468d015d | 4962 | if (breakpoint_enabled (b)) |
c5aa993b JM |
4963 | { |
4964 | if (b->type == type) | |
4965 | i++; | |
4966 | else if ((b->type == bp_hardware_watchpoint || | |
4967 | b->type == bp_read_watchpoint || | |
468d015d | 4968 | b->type == bp_access_watchpoint)) |
c5aa993b JM |
4969 | *other_type_used = 1; |
4970 | } | |
4971 | } | |
c906108c SS |
4972 | return i; |
4973 | } | |
4974 | ||
c906108c | 4975 | void |
fba45db2 | 4976 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 4977 | { |
c5aa993b | 4978 | struct breakpoint *b; |
c906108c SS |
4979 | |
4980 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
4981 | { |
4982 | if (((b->type == bp_watchpoint) | |
4983 | || (b->type == bp_hardware_watchpoint) | |
4984 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 4985 | || (b->type == bp_access_watchpoint)) |
468d015d | 4986 | && breakpoint_enabled (b)) |
c5aa993b | 4987 | { |
b5de0fa7 | 4988 | b->enable_state = bp_call_disabled; |
b60e7edf | 4989 | update_global_location_list (0); |
c5aa993b JM |
4990 | } |
4991 | } | |
c906108c SS |
4992 | } |
4993 | ||
4994 | void | |
fba45db2 | 4995 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 4996 | { |
c5aa993b | 4997 | struct breakpoint *b; |
c906108c SS |
4998 | |
4999 | ALL_BREAKPOINTS (b) | |
c5aa993b JM |
5000 | { |
5001 | if (((b->type == bp_watchpoint) | |
5002 | || (b->type == bp_hardware_watchpoint) | |
5003 | || (b->type == bp_read_watchpoint) | |
dfdfb3ca | 5004 | || (b->type == bp_access_watchpoint)) |
b5de0fa7 | 5005 | && (b->enable_state == bp_call_disabled)) |
c5aa993b | 5006 | { |
b5de0fa7 | 5007 | b->enable_state = bp_enabled; |
b60e7edf | 5008 | update_global_location_list (1); |
c5aa993b JM |
5009 | } |
5010 | } | |
c906108c SS |
5011 | } |
5012 | ||
5013 | ||
5014 | /* Set a breakpoint that will evaporate an end of command | |
5015 | at address specified by SAL. | |
5016 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
5017 | ||
5018 | struct breakpoint * | |
818dd999 | 5019 | set_momentary_breakpoint (struct symtab_and_line sal, struct frame_id frame_id, |
fba45db2 | 5020 | enum bptype type) |
c906108c | 5021 | { |
52f0bd74 | 5022 | struct breakpoint *b; |
4d28f7a8 | 5023 | b = set_raw_breakpoint (sal, type); |
b5de0fa7 EZ |
5024 | b->enable_state = bp_enabled; |
5025 | b->disposition = disp_donttouch; | |
818dd999 | 5026 | b->frame_id = frame_id; |
c906108c SS |
5027 | |
5028 | /* If we're debugging a multi-threaded program, then we | |
5029 | want momentary breakpoints to be active in only a | |
5030 | single thread of control. */ | |
39f77062 KB |
5031 | if (in_thread_list (inferior_ptid)) |
5032 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 5033 | |
b60e7edf | 5034 | update_global_location_list_nothrow (1); |
74960c60 | 5035 | |
c906108c SS |
5036 | return b; |
5037 | } | |
611c83ae PA |
5038 | |
5039 | struct breakpoint * | |
5040 | set_momentary_breakpoint_at_pc (CORE_ADDR pc, enum bptype type) | |
5041 | { | |
5042 | struct symtab_and_line sal; | |
5043 | ||
5044 | sal = find_pc_line (pc, 0); | |
5045 | sal.pc = pc; | |
5046 | sal.section = find_pc_overlay (pc); | |
5047 | sal.explicit_pc = 1; | |
5048 | ||
5049 | return set_momentary_breakpoint (sal, null_frame_id, type); | |
5050 | } | |
c906108c | 5051 | \f |
c5aa993b | 5052 | |
c906108c SS |
5053 | /* Tell the user we have just set a breakpoint B. */ |
5054 | ||
5055 | static void | |
fba45db2 | 5056 | mention (struct breakpoint *b) |
c906108c SS |
5057 | { |
5058 | int say_where = 0; | |
3b31d625 | 5059 | struct cleanup *old_chain, *ui_out_chain; |
8b93c638 | 5060 | struct ui_stream *stb; |
79a45b7d TT |
5061 | struct value_print_options opts; |
5062 | ||
5063 | get_user_print_options (&opts); | |
8b93c638 JM |
5064 | |
5065 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 5066 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
c906108c | 5067 | |
9a4105ab AC |
5068 | /* FIXME: This is misplaced; mention() is called by things (like |
5069 | hitting a watchpoint) other than breakpoint creation. It should | |
5070 | be possible to clean this up and at the same time replace the | |
7f4b89d1 | 5071 | random calls to breakpoint_changed with this hook. */ |
383f836e | 5072 | observer_notify_breakpoint_created (b->number); |
c906108c | 5073 | |
3086aeae DJ |
5074 | if (b->ops != NULL && b->ops->print_mention != NULL) |
5075 | b->ops->print_mention (b); | |
5076 | else | |
5077 | switch (b->type) | |
5078 | { | |
5079 | case bp_none: | |
a3f17187 | 5080 | printf_filtered (_("(apparently deleted?) Eventpoint %d: "), b->number); |
3086aeae DJ |
5081 | break; |
5082 | case bp_watchpoint: | |
5083 | ui_out_text (uiout, "Watchpoint "); | |
5084 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
5085 | ui_out_field_int (uiout, "number", b->number); | |
5086 | ui_out_text (uiout, ": "); | |
5087 | print_expression (b->exp, stb->stream); | |
5088 | ui_out_field_stream (uiout, "exp", stb); | |
5089 | do_cleanups (ui_out_chain); | |
5090 | break; | |
5091 | case bp_hardware_watchpoint: | |
5092 | ui_out_text (uiout, "Hardware watchpoint "); | |
5093 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
5094 | ui_out_field_int (uiout, "number", b->number); | |
5095 | ui_out_text (uiout, ": "); | |
5096 | print_expression (b->exp, stb->stream); | |
5097 | ui_out_field_stream (uiout, "exp", stb); | |
5098 | do_cleanups (ui_out_chain); | |
5099 | break; | |
5100 | case bp_read_watchpoint: | |
5101 | ui_out_text (uiout, "Hardware read watchpoint "); | |
5102 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
5103 | ui_out_field_int (uiout, "number", b->number); | |
5104 | ui_out_text (uiout, ": "); | |
5105 | print_expression (b->exp, stb->stream); | |
5106 | ui_out_field_stream (uiout, "exp", stb); | |
5107 | do_cleanups (ui_out_chain); | |
5108 | break; | |
5109 | case bp_access_watchpoint: | |
5110 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
5111 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
5112 | ui_out_field_int (uiout, "number", b->number); | |
5113 | ui_out_text (uiout, ": "); | |
5114 | print_expression (b->exp, stb->stream); | |
5115 | ui_out_field_stream (uiout, "exp", stb); | |
5116 | do_cleanups (ui_out_chain); | |
5117 | break; | |
5118 | case bp_breakpoint: | |
5119 | if (ui_out_is_mi_like_p (uiout)) | |
5120 | { | |
5121 | say_where = 0; | |
5122 | break; | |
5123 | } | |
2cec12e5 AR |
5124 | if (b->disposition == disp_del) |
5125 | printf_filtered (_("Temporary breakpoint")); | |
5126 | else | |
5127 | printf_filtered (_("Breakpoint")); | |
5128 | printf_filtered (_(" %d"), b->number); | |
3086aeae DJ |
5129 | say_where = 1; |
5130 | break; | |
5131 | case bp_hardware_breakpoint: | |
5132 | if (ui_out_is_mi_like_p (uiout)) | |
5133 | { | |
5134 | say_where = 0; | |
5135 | break; | |
5136 | } | |
a3f17187 | 5137 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); |
3086aeae DJ |
5138 | say_where = 1; |
5139 | break; | |
5140 | case bp_catch_load: | |
5141 | case bp_catch_unload: | |
a3f17187 | 5142 | printf_filtered (_("Catchpoint %d (%s %s)"), |
3086aeae DJ |
5143 | b->number, |
5144 | (b->type == bp_catch_load) ? "load" : "unload", | |
5145 | (b->dll_pathname != NULL) ? | |
5146 | b->dll_pathname : "<any library>"); | |
5147 | break; | |
3086aeae DJ |
5148 | |
5149 | case bp_until: | |
5150 | case bp_finish: | |
5151 | case bp_longjmp: | |
5152 | case bp_longjmp_resume: | |
5153 | case bp_step_resume: | |
3086aeae DJ |
5154 | case bp_call_dummy: |
5155 | case bp_watchpoint_scope: | |
5156 | case bp_shlib_event: | |
5157 | case bp_thread_event: | |
5158 | case bp_overlay_event: | |
5159 | break; | |
5160 | } | |
c906108c | 5161 | |
c906108c SS |
5162 | if (say_where) |
5163 | { | |
a3f17187 AC |
5164 | /* i18n: cagney/2005-02-11: Below needs to be merged into a |
5165 | single string. */ | |
0d381245 | 5166 | if (b->loc == NULL) |
c906108c | 5167 | { |
a3f17187 | 5168 | printf_filtered (_(" (%s) pending."), b->addr_string); |
0101ce28 JJ |
5169 | } |
5170 | else | |
5171 | { | |
79a45b7d | 5172 | if (opts.addressprint || b->source_file == NULL) |
0101ce28 JJ |
5173 | { |
5174 | printf_filtered (" at "); | |
ed49a04f | 5175 | fputs_filtered (paddress (b->loc->address), gdb_stdout); |
0101ce28 JJ |
5176 | } |
5177 | if (b->source_file) | |
5178 | printf_filtered (": file %s, line %d.", | |
5179 | b->source_file, b->line_number); | |
0d381245 VP |
5180 | |
5181 | if (b->loc->next) | |
5182 | { | |
5183 | struct bp_location *loc = b->loc; | |
5184 | int n = 0; | |
5185 | for (; loc; loc = loc->next) | |
5186 | ++n; | |
5187 | printf_filtered (" (%d locations)", n); | |
5188 | } | |
5189 | ||
c906108c | 5190 | } |
c906108c | 5191 | } |
8b93c638 | 5192 | do_cleanups (old_chain); |
9dc5e2a9 | 5193 | if (ui_out_is_mi_like_p (uiout)) |
fb40c209 | 5194 | return; |
c906108c SS |
5195 | printf_filtered ("\n"); |
5196 | } | |
c906108c | 5197 | \f |
c5aa993b | 5198 | |
0d381245 VP |
5199 | static struct bp_location * |
5200 | add_location_to_breakpoint (struct breakpoint *b, enum bptype bptype, | |
5201 | const struct symtab_and_line *sal) | |
5202 | { | |
5203 | struct bp_location *loc, **tmp; | |
5204 | ||
5205 | loc = allocate_bp_location (b, bptype); | |
5206 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
5207 | ; | |
5208 | *tmp = loc; | |
5209 | loc->requested_address = sal->pc; | |
5210 | loc->address = adjust_breakpoint_address (loc->requested_address, | |
5211 | bptype); | |
5212 | loc->section = sal->section; | |
5213 | ||
5214 | set_breakpoint_location_function (loc); | |
5215 | return loc; | |
5216 | } | |
514f746b AR |
5217 | \f |
5218 | ||
5219 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
5220 | return 0 otherwise. */ | |
5221 | ||
5222 | static int | |
5223 | bp_loc_is_permanent (struct bp_location *loc) | |
5224 | { | |
5225 | int len; | |
5226 | CORE_ADDR addr; | |
5227 | const gdb_byte *brk; | |
5228 | gdb_byte *target_mem; | |
5229 | ||
5230 | gdb_assert (loc != NULL); | |
5231 | ||
5232 | addr = loc->address; | |
5233 | brk = gdbarch_breakpoint_from_pc (current_gdbarch, &addr, &len); | |
5234 | ||
5235 | target_mem = alloca (len); | |
5236 | ||
5237 | if (target_read_memory (loc->address, target_mem, len) == 0 | |
5238 | && memcmp (target_mem, brk, len) == 0) | |
5239 | return 1; | |
5240 | ||
5241 | return 0; | |
5242 | } | |
5243 | ||
5244 | ||
c3f6f71d | 5245 | |
018d34a4 VP |
5246 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
5247 | as textual description of the location, and COND_STRING | |
db107f19 | 5248 | as condition expression. */ |
018d34a4 VP |
5249 | |
5250 | static void | |
0d381245 | 5251 | create_breakpoint (struct symtabs_and_lines sals, char *addr_string, |
018d34a4 VP |
5252 | char *cond_string, |
5253 | enum bptype type, enum bpdisp disposition, | |
604133b5 AR |
5254 | int thread, int ignore_count, |
5255 | struct breakpoint_ops *ops, int from_tty) | |
018d34a4 | 5256 | { |
0d381245 VP |
5257 | struct breakpoint *b = NULL; |
5258 | int i; | |
018d34a4 VP |
5259 | |
5260 | if (type == bp_hardware_breakpoint) | |
5261 | { | |
5262 | int i = hw_breakpoint_used_count (); | |
5263 | int target_resources_ok = | |
5264 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
5265 | i + 1, 0); | |
5266 | if (target_resources_ok == 0) | |
5267 | error (_("No hardware breakpoint support in the target.")); | |
5268 | else if (target_resources_ok < 0) | |
5269 | error (_("Hardware breakpoints used exceeds limit.")); | |
5270 | } | |
5271 | ||
0d381245 VP |
5272 | for (i = 0; i < sals.nelts; ++i) |
5273 | { | |
5274 | struct symtab_and_line sal = sals.sals[i]; | |
5275 | struct bp_location *loc; | |
5276 | ||
5277 | if (from_tty) | |
5278 | describe_other_breakpoints (sal.pc, sal.section, thread); | |
5279 | ||
5280 | if (i == 0) | |
5281 | { | |
5282 | b = set_raw_breakpoint (sal, type); | |
5283 | set_breakpoint_count (breakpoint_count + 1); | |
5284 | b->number = breakpoint_count; | |
5285 | b->thread = thread; | |
018d34a4 | 5286 | |
0d381245 VP |
5287 | b->cond_string = cond_string; |
5288 | b->ignore_count = ignore_count; | |
5289 | b->enable_state = bp_enabled; | |
5290 | b->disposition = disposition; | |
018d34a4 | 5291 | |
0d381245 VP |
5292 | loc = b->loc; |
5293 | } | |
5294 | else | |
018d34a4 | 5295 | { |
0d381245 VP |
5296 | loc = add_location_to_breakpoint (b, type, &sal); |
5297 | } | |
5298 | ||
514f746b AR |
5299 | if (bp_loc_is_permanent (loc)) |
5300 | make_breakpoint_permanent (b); | |
5301 | ||
0d381245 VP |
5302 | if (b->cond_string) |
5303 | { | |
5304 | char *arg = b->cond_string; | |
d32a6982 | 5305 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); |
0d381245 | 5306 | if (*arg) |
db107f19 | 5307 | error (_("Garbage %s follows condition"), arg); |
018d34a4 | 5308 | } |
0d381245 | 5309 | } |
018d34a4 VP |
5310 | |
5311 | if (addr_string) | |
5312 | b->addr_string = addr_string; | |
5313 | else | |
5314 | /* addr_string has to be used or breakpoint_re_set will delete | |
5315 | me. */ | |
5316 | b->addr_string = xstrprintf ("*0x%s", paddr (b->loc->address)); | |
5317 | ||
604133b5 | 5318 | b->ops = ops; |
018d34a4 VP |
5319 | mention (b); |
5320 | } | |
5321 | ||
ed0616c6 VP |
5322 | /* Remove element at INDEX_TO_REMOVE from SAL, shifting other |
5323 | elements to fill the void space. */ | |
5324 | static void remove_sal (struct symtabs_and_lines *sal, int index_to_remove) | |
5325 | { | |
5326 | int i = index_to_remove+1; | |
5327 | int last_index = sal->nelts-1; | |
5328 | ||
5329 | for (;i <= last_index; ++i) | |
5330 | sal->sals[i-1] = sal->sals[i]; | |
5331 | ||
5332 | --(sal->nelts); | |
5333 | } | |
5334 | ||
5335 | /* If appropriate, obtains all sals that correspond | |
5336 | to the same file and line as SAL. This is done | |
5337 | only if SAL does not have explicit PC and has | |
5338 | line and file information. If we got just a single | |
5339 | expanded sal, return the original. | |
5340 | ||
5341 | Otherwise, if SAL.explicit_line is not set, filter out | |
5342 | all sals for which the name of enclosing function | |
5343 | is different from SAL. This makes sure that if we have | |
5344 | breakpoint originally set in template instantiation, say | |
5345 | foo<int>(), we won't expand SAL to locations at the same | |
5346 | line in all existing instantiations of 'foo'. | |
5347 | ||
5348 | */ | |
5349 | struct symtabs_and_lines | |
5350 | expand_line_sal_maybe (struct symtab_and_line sal) | |
5351 | { | |
5352 | struct symtabs_and_lines expanded; | |
5353 | CORE_ADDR original_pc = sal.pc; | |
5354 | char *original_function = NULL; | |
5355 | int found; | |
5356 | int i; | |
5357 | ||
5358 | /* If we have explicit pc, don't expand. | |
5359 | If we have no line number, we can't expand. */ | |
5360 | if (sal.explicit_pc || sal.line == 0 || sal.symtab == NULL) | |
5361 | { | |
5362 | expanded.nelts = 1; | |
5363 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5364 | expanded.sals[0] = sal; | |
5365 | return expanded; | |
5366 | } | |
5367 | ||
5368 | sal.pc = 0; | |
5369 | find_pc_partial_function (original_pc, &original_function, NULL, NULL); | |
5370 | ||
5371 | expanded = expand_line_sal (sal); | |
5372 | if (expanded.nelts == 1) | |
5373 | { | |
5374 | /* We had one sal, we got one sal. Without futher | |
5375 | processing, just return the original sal. */ | |
5376 | xfree (expanded.sals); | |
5377 | expanded.nelts = 1; | |
5378 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5379 | sal.pc = original_pc; | |
5380 | expanded.sals[0] = sal; | |
5381 | return expanded; | |
5382 | } | |
5383 | ||
5384 | if (!sal.explicit_line) | |
5385 | { | |
5386 | CORE_ADDR func_addr, func_end; | |
5387 | for (i = 0; i < expanded.nelts; ++i) | |
5388 | { | |
5389 | CORE_ADDR pc = expanded.sals[i].pc; | |
5390 | char *this_function; | |
5391 | if (find_pc_partial_function (pc, &this_function, | |
5392 | &func_addr, &func_end)) | |
5393 | { | |
5394 | if (this_function && | |
5395 | strcmp (this_function, original_function) != 0) | |
5396 | { | |
5397 | remove_sal (&expanded, i); | |
5398 | --i; | |
5399 | } | |
5400 | else if (func_addr == pc) | |
5401 | { | |
5402 | /* We're at beginning of a function, and should | |
5403 | skip prologue. */ | |
5404 | struct symbol *sym = find_pc_function (pc); | |
5405 | if (sym) | |
5406 | expanded.sals[i] = find_function_start_sal (sym, 1); | |
5407 | else | |
5408 | expanded.sals[i].pc | |
5409 | = gdbarch_skip_prologue (current_gdbarch, pc); | |
5410 | } | |
5411 | } | |
5412 | } | |
5413 | } | |
5414 | ||
5415 | ||
5416 | if (expanded.nelts <= 1) | |
5417 | { | |
5418 | /* This is un ugly workaround. If we get zero | |
5419 | expanded sals then something is really wrong. | |
5420 | Fix that by returnign the original sal. */ | |
5421 | xfree (expanded.sals); | |
5422 | expanded.nelts = 1; | |
5423 | expanded.sals = xmalloc (sizeof (struct symtab_and_line)); | |
5424 | sal.pc = original_pc; | |
5425 | expanded.sals[0] = sal; | |
5426 | return expanded; | |
5427 | } | |
5428 | ||
5429 | if (original_pc) | |
5430 | { | |
5431 | found = 0; | |
5432 | for (i = 0; i < expanded.nelts; ++i) | |
5433 | if (expanded.sals[i].pc == original_pc) | |
5434 | { | |
5435 | found = 1; | |
5436 | break; | |
5437 | } | |
5438 | gdb_assert (found); | |
5439 | } | |
5440 | ||
5441 | return expanded; | |
5442 | } | |
5443 | ||
018d34a4 VP |
5444 | /* Add SALS.nelts breakpoints to the breakpoint table. For each |
5445 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
5446 | value. COND_STRING, if not NULL, specified the condition to be | |
5447 | used for all breakpoints. Essentially the only case where | |
5448 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
5449 | function. In that case, it's still not possible to specify | |
5450 | separate conditions for different overloaded functions, so | |
5451 | we take just a single condition string. | |
5452 | ||
c3f6f71d | 5453 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 5454 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
5455 | array contents). If the function fails (error() is called), the |
5456 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
5457 | COND and SALS arrays and each of those arrays contents. */ | |
c906108c SS |
5458 | |
5459 | static void | |
c3f6f71d | 5460 | create_breakpoints (struct symtabs_and_lines sals, char **addr_string, |
018d34a4 | 5461 | char *cond_string, |
c3f6f71d | 5462 | enum bptype type, enum bpdisp disposition, |
604133b5 AR |
5463 | int thread, int ignore_count, |
5464 | struct breakpoint_ops *ops, int from_tty) | |
c906108c | 5465 | { |
018d34a4 VP |
5466 | int i; |
5467 | for (i = 0; i < sals.nelts; ++i) | |
c3f6f71d | 5468 | { |
ed0616c6 VP |
5469 | struct symtabs_and_lines expanded = |
5470 | expand_line_sal_maybe (sals.sals[i]); | |
0d381245 | 5471 | |
ed0616c6 | 5472 | create_breakpoint (expanded, addr_string[i], |
018d34a4 | 5473 | cond_string, type, disposition, |
604133b5 | 5474 | thread, ignore_count, ops, from_tty); |
c3f6f71d | 5475 | } |
74960c60 | 5476 | |
b60e7edf | 5477 | update_global_location_list (1); |
c3f6f71d | 5478 | } |
c906108c | 5479 | |
c3f6f71d JM |
5480 | /* Parse ARG which is assumed to be a SAL specification possibly |
5481 | followed by conditionals. On return, SALS contains an array of SAL | |
5482 | addresses found. ADDR_STRING contains a vector of (canonical) | |
5483 | address strings. ARG points to the end of the SAL. */ | |
c906108c | 5484 | |
b9362cc7 | 5485 | static void |
c3f6f71d JM |
5486 | parse_breakpoint_sals (char **address, |
5487 | struct symtabs_and_lines *sals, | |
0101ce28 JJ |
5488 | char ***addr_string, |
5489 | int *not_found_ptr) | |
c3f6f71d JM |
5490 | { |
5491 | char *addr_start = *address; | |
5492 | *addr_string = NULL; | |
5493 | /* If no arg given, or if first arg is 'if ', use the default | |
5494 | breakpoint. */ | |
5495 | if ((*address) == NULL | |
5496 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c SS |
5497 | { |
5498 | if (default_breakpoint_valid) | |
5499 | { | |
c3f6f71d | 5500 | struct symtab_and_line sal; |
fe39c653 | 5501 | init_sal (&sal); /* initialize to zeroes */ |
c3f6f71d | 5502 | sals->sals = (struct symtab_and_line *) |
c906108c SS |
5503 | xmalloc (sizeof (struct symtab_and_line)); |
5504 | sal.pc = default_breakpoint_address; | |
5505 | sal.line = default_breakpoint_line; | |
5506 | sal.symtab = default_breakpoint_symtab; | |
c5aa993b | 5507 | sal.section = find_pc_overlay (sal.pc); |
c3f6f71d JM |
5508 | sals->sals[0] = sal; |
5509 | sals->nelts = 1; | |
c906108c SS |
5510 | } |
5511 | else | |
8a3fe4f8 | 5512 | error (_("No default breakpoint address now.")); |
c906108c SS |
5513 | } |
5514 | else | |
5515 | { | |
c906108c | 5516 | /* Force almost all breakpoints to be in terms of the |
c5aa993b JM |
5517 | current_source_symtab (which is decode_line_1's default). This |
5518 | should produce the results we want almost all of the time while | |
1aeae86e AF |
5519 | leaving default_breakpoint_* alone. |
5520 | ObjC: However, don't match an Objective-C method name which | |
5521 | may have a '+' or '-' succeeded by a '[' */ | |
0378c332 | 5522 | |
c214a6fd | 5523 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
0378c332 | 5524 | |
c906108c | 5525 | if (default_breakpoint_valid |
0378c332 | 5526 | && (!cursal.symtab |
1aeae86e AF |
5527 | || ((strchr ("+-", (*address)[0]) != NULL) |
5528 | && ((*address)[1] != '[')))) | |
c3f6f71d | 5529 | *sals = decode_line_1 (address, 1, default_breakpoint_symtab, |
0101ce28 JJ |
5530 | default_breakpoint_line, addr_string, |
5531 | not_found_ptr); | |
c906108c | 5532 | else |
0101ce28 JJ |
5533 | *sals = decode_line_1 (address, 1, (struct symtab *) NULL, 0, |
5534 | addr_string, not_found_ptr); | |
c906108c | 5535 | } |
c3f6f71d JM |
5536 | /* For any SAL that didn't have a canonical string, fill one in. */ |
5537 | if (sals->nelts > 0 && *addr_string == NULL) | |
5538 | *addr_string = xcalloc (sals->nelts, sizeof (char **)); | |
5539 | if (addr_start != (*address)) | |
c906108c | 5540 | { |
c3f6f71d JM |
5541 | int i; |
5542 | for (i = 0; i < sals->nelts; i++) | |
c906108c | 5543 | { |
c3f6f71d JM |
5544 | /* Add the string if not present. */ |
5545 | if ((*addr_string)[i] == NULL) | |
5546 | (*addr_string)[i] = savestring (addr_start, (*address) - addr_start); | |
c906108c SS |
5547 | } |
5548 | } | |
c3f6f71d | 5549 | } |
c906108c | 5550 | |
c906108c | 5551 | |
c3f6f71d JM |
5552 | /* Convert each SAL into a real PC. Verify that the PC can be |
5553 | inserted as a breakpoint. If it can't throw an error. */ | |
c906108c | 5554 | |
b9362cc7 | 5555 | static void |
c3f6f71d JM |
5556 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals, |
5557 | char *address) | |
5558 | { | |
5559 | int i; | |
5560 | for (i = 0; i < sals->nelts; i++) | |
ee53e872 | 5561 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
5562 | } |
5563 | ||
05ff989b | 5564 | static void |
0101ce28 JJ |
5565 | do_captured_parse_breakpoint (struct ui_out *ui, void *data) |
5566 | { | |
5567 | struct captured_parse_breakpoint_args *args = data; | |
5568 | ||
5569 | parse_breakpoint_sals (args->arg_p, args->sals_p, args->addr_string_p, | |
5570 | args->not_found_ptr); | |
0101ce28 JJ |
5571 | } |
5572 | ||
018d34a4 VP |
5573 | /* Given TOK, a string specification of condition and thread, as |
5574 | accepted by the 'break' command, extract the condition | |
5575 | string and thread number and set *COND_STRING and *THREAD. | |
5576 | PC identifies the context at which the condition should be parsed. | |
5577 | If no condition is found, *COND_STRING is set to NULL. | |
5578 | If no thread is found, *THREAD is set to -1. */ | |
5579 | static void | |
5580 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
5581 | char **cond_string, int *thread) | |
5582 | { | |
5583 | *cond_string = NULL; | |
5584 | *thread = -1; | |
5585 | while (tok && *tok) | |
5586 | { | |
5587 | char *end_tok; | |
5588 | int toklen; | |
5589 | char *cond_start = NULL; | |
5590 | char *cond_end = NULL; | |
5591 | while (*tok == ' ' || *tok == '\t') | |
5592 | tok++; | |
5593 | ||
5594 | end_tok = tok; | |
5595 | ||
5596 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
5597 | end_tok++; | |
5598 | ||
5599 | toklen = end_tok - tok; | |
5600 | ||
5601 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
5602 | { | |
5603 | tok = cond_start = end_tok + 1; | |
5604 | parse_exp_1 (&tok, block_for_pc (pc), 0); | |
5605 | cond_end = tok; | |
5606 | *cond_string = savestring (cond_start, | |
5607 | cond_end - cond_start); | |
5608 | } | |
5609 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
5610 | { | |
5611 | char *tmptok; | |
5612 | ||
5613 | tok = end_tok + 1; | |
5614 | tmptok = tok; | |
5615 | *thread = strtol (tok, &tok, 0); | |
5616 | if (tok == tmptok) | |
5617 | error (_("Junk after thread keyword.")); | |
5618 | if (!valid_thread_id (*thread)) | |
5619 | error (_("Unknown thread %d."), *thread); | |
5620 | } | |
5621 | else | |
5622 | error (_("Junk at end of arguments.")); | |
5623 | } | |
5624 | } | |
5625 | ||
72b2ff0e VP |
5626 | /* Set a breakpoint. This function is shared between |
5627 | CLI and MI functions for setting a breakpoint. | |
5628 | This function has two major modes of operations, | |
5629 | selected by the PARSE_CONDITION_AND_THREAD parameter. | |
5630 | If non-zero, the function will parse arg, extracting | |
5631 | breakpoint location, address and thread. Otherwise, | |
5632 | ARG is just the location of breakpoint, with condition | |
5633 | and thread specified by the COND_STRING and THREAD | |
5634 | parameters. */ | |
0101ce28 | 5635 | |
98deb0da | 5636 | static void |
72b2ff0e | 5637 | break_command_really (char *arg, char *cond_string, int thread, |
60c46647 VP |
5638 | int parse_condition_and_thread, |
5639 | int tempflag, int hardwareflag, | |
5640 | int ignore_count, | |
5641 | enum auto_boolean pending_break_support, | |
604133b5 | 5642 | struct breakpoint_ops *ops, |
60c46647 | 5643 | int from_tty) |
c3f6f71d | 5644 | { |
71fff37b | 5645 | struct gdb_exception e; |
c3f6f71d | 5646 | struct symtabs_and_lines sals; |
0101ce28 | 5647 | struct symtab_and_line pending_sal; |
0101ce28 JJ |
5648 | char *copy_arg; |
5649 | char *err_msg; | |
c3f6f71d JM |
5650 | char *addr_start = arg; |
5651 | char **addr_string; | |
5652 | struct cleanup *old_chain; | |
5653 | struct cleanup *breakpoint_chain = NULL; | |
0101ce28 | 5654 | struct captured_parse_breakpoint_args parse_args; |
05ff989b | 5655 | int i; |
0101ce28 | 5656 | int pending = 0; |
0101ce28 | 5657 | int not_found = 0; |
c3f6f71d | 5658 | |
c3f6f71d JM |
5659 | sals.sals = NULL; |
5660 | sals.nelts = 0; | |
5661 | addr_string = NULL; | |
c3f6f71d | 5662 | |
0101ce28 JJ |
5663 | parse_args.arg_p = &arg; |
5664 | parse_args.sals_p = &sals; | |
5665 | parse_args.addr_string_p = &addr_string; | |
5666 | parse_args.not_found_ptr = ¬_found; | |
5667 | ||
05ff989b AC |
5668 | e = catch_exception (uiout, do_captured_parse_breakpoint, |
5669 | &parse_args, RETURN_MASK_ALL); | |
0101ce28 JJ |
5670 | |
5671 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 5672 | switch (e.reason) |
0101ce28 | 5673 | { |
05ff989b | 5674 | case RETURN_QUIT: |
98deb0da | 5675 | throw_exception (e); |
05ff989b AC |
5676 | case RETURN_ERROR: |
5677 | switch (e.error) | |
0101ce28 | 5678 | { |
05ff989b | 5679 | case NOT_FOUND_ERROR: |
0101ce28 | 5680 | |
05ff989b AC |
5681 | /* If pending breakpoint support is turned off, throw |
5682 | error. */ | |
fa8d40ab JJ |
5683 | |
5684 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
5685 | throw_exception (e); |
5686 | ||
5687 | exception_print (gdb_stderr, e); | |
fa8d40ab | 5688 | |
05ff989b AC |
5689 | /* If pending breakpoint support is auto query and the user |
5690 | selects no, then simply return the error code. */ | |
fa8d40ab JJ |
5691 | if (pending_break_support == AUTO_BOOLEAN_AUTO && |
5692 | !nquery ("Make breakpoint pending on future shared library load? ")) | |
98deb0da | 5693 | return; |
fa8d40ab | 5694 | |
05ff989b AC |
5695 | /* At this point, either the user was queried about setting |
5696 | a pending breakpoint and selected yes, or pending | |
5697 | breakpoint behavior is on and thus a pending breakpoint | |
5698 | is defaulted on behalf of the user. */ | |
0101ce28 JJ |
5699 | copy_arg = xstrdup (addr_start); |
5700 | addr_string = ©_arg; | |
5701 | sals.nelts = 1; | |
5702 | sals.sals = &pending_sal; | |
5703 | pending_sal.pc = 0; | |
5704 | pending = 1; | |
05ff989b AC |
5705 | break; |
5706 | default: | |
98deb0da | 5707 | throw_exception (e); |
0101ce28 | 5708 | } |
05ff989b AC |
5709 | default: |
5710 | if (!sals.nelts) | |
98deb0da | 5711 | return; |
0101ce28 | 5712 | } |
c3f6f71d JM |
5713 | |
5714 | /* Create a chain of things that always need to be cleaned up. */ | |
5715 | old_chain = make_cleanup (null_cleanup, 0); | |
5716 | ||
0101ce28 JJ |
5717 | if (!pending) |
5718 | { | |
5719 | /* Make sure that all storage allocated to SALS gets freed. */ | |
5720 | make_cleanup (xfree, sals.sals); | |
5721 | ||
5722 | /* Cleanup the addr_string array but not its contents. */ | |
5723 | make_cleanup (xfree, addr_string); | |
5724 | } | |
c3f6f71d | 5725 | |
c3f6f71d JM |
5726 | /* ----------------------------- SNIP ----------------------------- |
5727 | Anything added to the cleanup chain beyond this point is assumed | |
5728 | to be part of a breakpoint. If the breakpoint create succeeds | |
5729 | then the memory is not reclaimed. */ | |
5730 | breakpoint_chain = make_cleanup (null_cleanup, 0); | |
5731 | ||
5732 | /* Mark the contents of the addr_string for cleanup. These go on | |
5733 | the breakpoint_chain and only occure if the breakpoint create | |
5734 | fails. */ | |
5735 | for (i = 0; i < sals.nelts; i++) | |
5736 | { | |
5737 | if (addr_string[i] != NULL) | |
b8c9b27d | 5738 | make_cleanup (xfree, addr_string[i]); |
c3f6f71d JM |
5739 | } |
5740 | ||
5741 | /* Resolve all line numbers to PC's and verify that the addresses | |
5742 | are ok for the target. */ | |
0101ce28 JJ |
5743 | if (!pending) |
5744 | breakpoint_sals_to_pc (&sals, addr_start); | |
c3f6f71d JM |
5745 | |
5746 | /* Verify that condition can be parsed, before setting any | |
5747 | breakpoints. Allocate a separate condition expression for each | |
5748 | breakpoint. */ | |
0101ce28 | 5749 | if (!pending) |
c3f6f71d | 5750 | { |
2f069f6f | 5751 | if (parse_condition_and_thread) |
72b2ff0e VP |
5752 | { |
5753 | /* Here we only parse 'arg' to separate condition | |
5754 | from thread number, so parsing in context of first | |
5755 | sal is OK. When setting the breakpoint we'll | |
5756 | re-parse it in context of each sal. */ | |
5757 | cond_string = NULL; | |
5758 | thread = -1; | |
5759 | find_condition_and_thread (arg, sals.sals[0].pc, &cond_string, &thread); | |
5760 | if (cond_string) | |
5761 | make_cleanup (xfree, cond_string); | |
5762 | } | |
2f069f6f | 5763 | else |
72b2ff0e VP |
5764 | { |
5765 | /* Create a private copy of condition string. */ | |
5766 | if (cond_string) | |
5767 | { | |
5768 | cond_string = xstrdup (cond_string); | |
5769 | make_cleanup (xfree, cond_string); | |
5770 | } | |
5771 | } | |
018d34a4 | 5772 | create_breakpoints (sals, addr_string, cond_string, |
0101ce28 JJ |
5773 | hardwareflag ? bp_hardware_breakpoint |
5774 | : bp_breakpoint, | |
5775 | tempflag ? disp_del : disp_donttouch, | |
604133b5 | 5776 | thread, ignore_count, ops, from_tty); |
c906108c | 5777 | } |
0101ce28 JJ |
5778 | else |
5779 | { | |
fe3f5fa8 | 5780 | struct symtab_and_line sal = {0}; |
0101ce28 JJ |
5781 | struct breakpoint *b; |
5782 | ||
0101ce28 JJ |
5783 | make_cleanup (xfree, copy_arg); |
5784 | ||
0d381245 VP |
5785 | b = set_raw_breakpoint_without_location (hardwareflag |
5786 | ? bp_hardware_breakpoint | |
5787 | : bp_breakpoint); | |
0101ce28 JJ |
5788 | set_breakpoint_count (breakpoint_count + 1); |
5789 | b->number = breakpoint_count; | |
72b2ff0e | 5790 | b->thread = -1; |
018d34a4 | 5791 | b->addr_string = addr_string[0]; |
72b2ff0e | 5792 | b->cond_string = NULL; |
0101ce28 | 5793 | b->ignore_count = ignore_count; |
0101ce28 | 5794 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 5795 | b->condition_not_parsed = 1; |
604133b5 | 5796 | b->ops = ops; |
74960c60 | 5797 | |
b60e7edf | 5798 | update_global_location_list (1); |
0101ce28 JJ |
5799 | mention (b); |
5800 | } | |
5801 | ||
c3f6f71d | 5802 | if (sals.nelts > 1) |
8a3fe4f8 AC |
5803 | warning (_("Multiple breakpoints were set.\n" |
5804 | "Use the \"delete\" command to delete unwanted breakpoints.")); | |
c3f6f71d JM |
5805 | /* That's it. Discard the cleanups for data inserted into the |
5806 | breakpoint. */ | |
5807 | discard_cleanups (breakpoint_chain); | |
5808 | /* But cleanup everything else. */ | |
5809 | do_cleanups (old_chain); | |
5810 | } | |
c906108c | 5811 | |
72b2ff0e VP |
5812 | /* Set a breakpoint. |
5813 | ARG is a string describing breakpoint address, | |
5814 | condition, and thread. | |
5815 | FLAG specifies if a breakpoint is hardware on, | |
5816 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
5817 | and BP_TEMPFLAG. */ | |
5818 | ||
98deb0da | 5819 | static void |
72b2ff0e | 5820 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 5821 | { |
72b2ff0e VP |
5822 | int hardwareflag = flag & BP_HARDWAREFLAG; |
5823 | int tempflag = flag & BP_TEMPFLAG; | |
c3f6f71d | 5824 | |
98deb0da VP |
5825 | break_command_really (arg, |
5826 | NULL, 0, 1 /* parse arg */, | |
5827 | tempflag, hardwareflag, | |
5828 | 0 /* Ignore count */, | |
604133b5 AR |
5829 | pending_break_support, |
5830 | NULL /* breakpoint_ops */, | |
5831 | from_tty); | |
c906108c SS |
5832 | } |
5833 | ||
72b2ff0e | 5834 | |
98deb0da VP |
5835 | void |
5836 | set_breakpoint (char *address, char *condition, | |
c3f6f71d | 5837 | int hardwareflag, int tempflag, |
ce43223b | 5838 | int thread, int ignore_count, |
98deb0da | 5839 | int pending) |
c3f6f71d | 5840 | { |
98deb0da VP |
5841 | break_command_really (address, condition, thread, |
5842 | 0 /* condition and thread are valid. */, | |
5843 | tempflag, hardwareflag, | |
5844 | ignore_count, | |
5845 | pending | |
5846 | ? AUTO_BOOLEAN_TRUE : AUTO_BOOLEAN_FALSE, | |
604133b5 | 5847 | NULL, 0); |
c3f6f71d JM |
5848 | } |
5849 | ||
6a048695 JB |
5850 | /* Adjust SAL to the first instruction past the function prologue. |
5851 | The end of the prologue is determined using the line table from | |
5852 | the debugging information. | |
5853 | ||
5854 | If SAL is already past the prologue, then do nothing. */ | |
5855 | ||
5856 | static void | |
5857 | skip_prologue_sal (struct symtab_and_line *sal) | |
5858 | { | |
5859 | struct symbol *sym = find_pc_function (sal->pc); | |
5860 | struct symtab_and_line start_sal; | |
5861 | ||
5862 | if (sym == NULL) | |
5863 | return; | |
5864 | ||
5865 | start_sal = find_function_start_sal (sym, 1); | |
5866 | if (sal->pc < start_sal.pc) | |
5867 | *sal = start_sal; | |
5868 | } | |
c3f6f71d | 5869 | |
c906108c SS |
5870 | /* Helper function for break_command_1 and disassemble_command. */ |
5871 | ||
5872 | void | |
fba45db2 | 5873 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
5874 | { |
5875 | CORE_ADDR pc; | |
5876 | ||
5877 | if (sal->pc == 0 && sal->symtab != NULL) | |
5878 | { | |
5879 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 5880 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
5881 | sal->line, sal->symtab->filename); |
5882 | sal->pc = pc; | |
6a048695 JB |
5883 | |
5884 | /* If this SAL corresponds to a breakpoint inserted using | |
5885 | a line number, then skip the function prologue if necessary. */ | |
5886 | if (sal->explicit_line) | |
5887 | skip_prologue_sal (sal); | |
c906108c SS |
5888 | } |
5889 | ||
5890 | if (sal->section == 0 && sal->symtab != NULL) | |
5891 | { | |
5892 | struct blockvector *bv; | |
c5aa993b JM |
5893 | struct block *b; |
5894 | struct symbol *sym; | |
c906108c | 5895 | |
801e3a5b | 5896 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
5897 | if (bv != NULL) |
5898 | { | |
7f0df278 | 5899 | sym = block_linkage_function (b); |
c906108c SS |
5900 | if (sym != NULL) |
5901 | { | |
5902 | fixup_symbol_section (sym, sal->symtab->objfile); | |
714835d5 | 5903 | sal->section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
5904 | } |
5905 | else | |
5906 | { | |
5907 | /* It really is worthwhile to have the section, so we'll just | |
c5aa993b JM |
5908 | have to look harder. This case can be executed if we have |
5909 | line numbers but no functions (as can happen in assembly | |
5910 | source). */ | |
c906108c | 5911 | |
c5aa993b | 5912 | struct minimal_symbol *msym; |
c906108c SS |
5913 | |
5914 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
5915 | if (msym) | |
714835d5 | 5916 | sal->section = SYMBOL_OBJ_SECTION (msym); |
c906108c SS |
5917 | } |
5918 | } | |
5919 | } | |
5920 | } | |
5921 | ||
5922 | void | |
fba45db2 | 5923 | break_command (char *arg, int from_tty) |
c906108c | 5924 | { |
db107f19 | 5925 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
5926 | } |
5927 | ||
c906108c | 5928 | void |
fba45db2 | 5929 | tbreak_command (char *arg, int from_tty) |
c906108c | 5930 | { |
db107f19 | 5931 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
5932 | } |
5933 | ||
c906108c | 5934 | static void |
fba45db2 | 5935 | hbreak_command (char *arg, int from_tty) |
c906108c | 5936 | { |
db107f19 | 5937 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
5938 | } |
5939 | ||
5940 | static void | |
fba45db2 | 5941 | thbreak_command (char *arg, int from_tty) |
c906108c | 5942 | { |
db107f19 | 5943 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
5944 | } |
5945 | ||
5946 | static void | |
fba45db2 | 5947 | stop_command (char *arg, int from_tty) |
c906108c | 5948 | { |
a3f17187 | 5949 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 5950 | Usage: stop in <function | address>\n\ |
a3f17187 | 5951 | stop at <line>\n")); |
c906108c SS |
5952 | } |
5953 | ||
5954 | static void | |
fba45db2 | 5955 | stopin_command (char *arg, int from_tty) |
c906108c SS |
5956 | { |
5957 | int badInput = 0; | |
5958 | ||
c5aa993b | 5959 | if (arg == (char *) NULL) |
c906108c SS |
5960 | badInput = 1; |
5961 | else if (*arg != '*') | |
5962 | { | |
5963 | char *argptr = arg; | |
5964 | int hasColon = 0; | |
5965 | ||
53a5351d JM |
5966 | /* look for a ':'. If this is a line number specification, then |
5967 | say it is bad, otherwise, it should be an address or | |
5968 | function/method name */ | |
c906108c | 5969 | while (*argptr && !hasColon) |
c5aa993b JM |
5970 | { |
5971 | hasColon = (*argptr == ':'); | |
5972 | argptr++; | |
5973 | } | |
c906108c SS |
5974 | |
5975 | if (hasColon) | |
c5aa993b | 5976 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 5977 | else |
c5aa993b | 5978 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
5979 | } |
5980 | ||
5981 | if (badInput) | |
a3f17187 | 5982 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 5983 | else |
db107f19 | 5984 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
5985 | } |
5986 | ||
5987 | static void | |
fba45db2 | 5988 | stopat_command (char *arg, int from_tty) |
c906108c SS |
5989 | { |
5990 | int badInput = 0; | |
5991 | ||
c5aa993b | 5992 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
5993 | badInput = 1; |
5994 | else | |
5995 | { | |
5996 | char *argptr = arg; | |
5997 | int hasColon = 0; | |
5998 | ||
5999 | /* look for a ':'. If there is a '::' then get out, otherwise | |
c5aa993b | 6000 | it is probably a line number. */ |
c906108c | 6001 | while (*argptr && !hasColon) |
c5aa993b JM |
6002 | { |
6003 | hasColon = (*argptr == ':'); | |
6004 | argptr++; | |
6005 | } | |
c906108c SS |
6006 | |
6007 | if (hasColon) | |
c5aa993b | 6008 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 6009 | else |
c5aa993b | 6010 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
6011 | } |
6012 | ||
6013 | if (badInput) | |
a3f17187 | 6014 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 6015 | else |
db107f19 | 6016 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
6017 | } |
6018 | ||
53a5351d JM |
6019 | /* accessflag: hw_write: watch write, |
6020 | hw_read: watch read, | |
6021 | hw_access: watch access (read or write) */ | |
c906108c | 6022 | static void |
fba45db2 | 6023 | watch_command_1 (char *arg, int accessflag, int from_tty) |
c906108c | 6024 | { |
d983da9c | 6025 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c SS |
6026 | struct symtab_and_line sal; |
6027 | struct expression *exp; | |
6028 | struct block *exp_valid_block; | |
6029 | struct value *val, *mark; | |
6030 | struct frame_info *frame; | |
6031 | struct frame_info *prev_frame = NULL; | |
6032 | char *exp_start = NULL; | |
6033 | char *exp_end = NULL; | |
37e4754d | 6034 | char *tok, *id_tok_start, *end_tok; |
c906108c SS |
6035 | int toklen; |
6036 | char *cond_start = NULL; | |
6037 | char *cond_end = NULL; | |
6038 | struct expression *cond = NULL; | |
6039 | int i, other_type_used, target_resources_ok = 0; | |
6040 | enum bptype bp_type; | |
6041 | int mem_cnt = 0; | |
37e4754d | 6042 | int thread = -1; |
c906108c | 6043 | |
fe39c653 | 6044 | init_sal (&sal); /* initialize to zeroes */ |
c5aa993b | 6045 | |
37e4754d LM |
6046 | /* Make sure that we actually have parameters to parse. */ |
6047 | if (arg != NULL && arg[0] != '\0') | |
6048 | { | |
6049 | toklen = strlen (arg); /* Size of argument list. */ | |
6050 | ||
6051 | /* Points tok to the end of the argument list. */ | |
6052 | tok = arg + toklen - 1; | |
6053 | ||
6054 | /* Go backwards in the parameters list. Skip the last parameter. | |
6055 | If we're expecting a 'thread <thread_num>' parameter, this should | |
6056 | be the thread identifier. */ | |
6057 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
6058 | tok--; | |
6059 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
6060 | tok--; | |
6061 | ||
6062 | /* Points end_tok to the beginning of the last token. */ | |
6063 | id_tok_start = tok + 1; | |
6064 | ||
6065 | /* Go backwards in the parameters list. Skip one more parameter. | |
6066 | If we're expecting a 'thread <thread_num>' parameter, we should | |
6067 | reach a "thread" token. */ | |
6068 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
6069 | tok--; | |
6070 | ||
6071 | end_tok = tok; | |
6072 | ||
6073 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
6074 | tok--; | |
6075 | ||
6076 | /* Move the pointer forward to skip the whitespace and | |
6077 | calculate the length of the token. */ | |
6078 | tok++; | |
6079 | toklen = end_tok - tok; | |
6080 | ||
6081 | if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
6082 | { | |
6083 | /* At this point we've found a "thread" token, which means | |
6084 | the user is trying to set a watchpoint that triggers | |
6085 | only in a specific thread. */ | |
6086 | char *endp; | |
6087 | ||
6088 | /* Extract the thread ID from the next token. */ | |
6089 | thread = strtol (id_tok_start, &endp, 0); | |
6090 | ||
6091 | /* Check if the user provided a valid numeric value for the | |
6092 | thread ID. */ | |
6093 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
6094 | error (_("Invalid thread ID specification %s."), id_tok_start); | |
6095 | ||
6096 | /* Check if the thread actually exists. */ | |
6097 | if (!valid_thread_id (thread)) | |
6098 | error (_("Unknown thread %d."), thread); | |
6099 | ||
6100 | /* Truncate the string and get rid of the thread <thread_num> | |
6101 | parameter before the parameter list is parsed by the | |
6102 | evaluate_expression() function. */ | |
6103 | *tok = '\0'; | |
6104 | } | |
6105 | } | |
6106 | ||
6107 | /* Parse the rest of the arguments. */ | |
c906108c SS |
6108 | innermost_block = NULL; |
6109 | exp_start = arg; | |
6110 | exp = parse_exp_1 (&arg, 0, 0); | |
6111 | exp_end = arg; | |
6112 | exp_valid_block = innermost_block; | |
6113 | mark = value_mark (); | |
fa4727a6 DJ |
6114 | fetch_watchpoint_value (exp, &val, NULL, NULL); |
6115 | if (val != NULL) | |
6116 | release_value (val); | |
c906108c SS |
6117 | |
6118 | tok = arg; | |
6119 | while (*tok == ' ' || *tok == '\t') | |
6120 | tok++; | |
6121 | end_tok = tok; | |
6122 | ||
6123 | while (*end_tok != ' ' && *end_tok != '\t' && *end_tok != '\000') | |
6124 | end_tok++; | |
6125 | ||
6126 | toklen = end_tok - tok; | |
6127 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
6128 | { | |
6129 | tok = cond_start = end_tok + 1; | |
6130 | cond = parse_exp_1 (&tok, 0, 0); | |
6131 | cond_end = tok; | |
6132 | } | |
6133 | if (*tok) | |
8a3fe4f8 | 6134 | error (_("Junk at end of command.")); |
c906108c | 6135 | |
53a5351d | 6136 | if (accessflag == hw_read) |
c5aa993b | 6137 | bp_type = bp_read_watchpoint; |
53a5351d | 6138 | else if (accessflag == hw_access) |
c5aa993b JM |
6139 | bp_type = bp_access_watchpoint; |
6140 | else | |
6141 | bp_type = bp_hardware_watchpoint; | |
c906108c SS |
6142 | |
6143 | mem_cnt = can_use_hardware_watchpoint (val); | |
6144 | if (mem_cnt == 0 && bp_type != bp_hardware_watchpoint) | |
8a3fe4f8 | 6145 | error (_("Expression cannot be implemented with read/access watchpoint.")); |
c5aa993b JM |
6146 | if (mem_cnt != 0) |
6147 | { | |
6148 | i = hw_watchpoint_used_count (bp_type, &other_type_used); | |
53a5351d JM |
6149 | target_resources_ok = |
6150 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_type, i + mem_cnt, | |
6151 | other_type_used); | |
c5aa993b | 6152 | if (target_resources_ok == 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 6153 | error (_("Target does not support this type of hardware watchpoint.")); |
53a5351d | 6154 | |
c5aa993b | 6155 | if (target_resources_ok < 0 && bp_type != bp_hardware_watchpoint) |
8a3fe4f8 | 6156 | error (_("Target can only support one kind of HW watchpoint at a time.")); |
c5aa993b | 6157 | } |
c906108c | 6158 | |
4d28f7a8 KB |
6159 | /* Change the type of breakpoint to an ordinary watchpoint if a hardware |
6160 | watchpoint could not be set. */ | |
6161 | if (!mem_cnt || target_resources_ok <= 0) | |
6162 | bp_type = bp_watchpoint; | |
6163 | ||
d983da9c DJ |
6164 | frame = block_innermost_frame (exp_valid_block); |
6165 | if (frame) | |
6166 | prev_frame = get_prev_frame (frame); | |
6167 | else | |
6168 | prev_frame = NULL; | |
6169 | ||
6170 | /* If the expression is "local", then set up a "watchpoint scope" | |
6171 | breakpoint at the point where we've left the scope of the watchpoint | |
6172 | expression. Create the scope breakpoint before the watchpoint, so | |
6173 | that we will encounter it first in bpstat_stop_status. */ | |
6174 | if (innermost_block && prev_frame) | |
6175 | { | |
6176 | scope_breakpoint = create_internal_breakpoint (get_frame_pc (prev_frame), | |
6177 | bp_watchpoint_scope); | |
6178 | ||
6179 | scope_breakpoint->enable_state = bp_enabled; | |
6180 | ||
6181 | /* Automatically delete the breakpoint when it hits. */ | |
6182 | scope_breakpoint->disposition = disp_del; | |
6183 | ||
6184 | /* Only break in the proper frame (help with recursion). */ | |
6185 | scope_breakpoint->frame_id = get_frame_id (prev_frame); | |
6186 | ||
6187 | /* Set the address at which we will stop. */ | |
6188 | scope_breakpoint->loc->requested_address | |
6189 | = get_frame_pc (prev_frame); | |
6190 | scope_breakpoint->loc->address | |
6191 | = adjust_breakpoint_address (scope_breakpoint->loc->requested_address, | |
6192 | scope_breakpoint->type); | |
6193 | } | |
6194 | ||
c906108c | 6195 | /* Now set up the breakpoint. */ |
4d28f7a8 | 6196 | b = set_raw_breakpoint (sal, bp_type); |
c906108c SS |
6197 | set_breakpoint_count (breakpoint_count + 1); |
6198 | b->number = breakpoint_count; | |
37e4754d | 6199 | b->thread = thread; |
b5de0fa7 | 6200 | b->disposition = disp_donttouch; |
c906108c SS |
6201 | b->exp = exp; |
6202 | b->exp_valid_block = exp_valid_block; | |
6203 | b->exp_string = savestring (exp_start, exp_end - exp_start); | |
6204 | b->val = val; | |
fa4727a6 | 6205 | b->val_valid = 1; |
511a6cd4 | 6206 | b->loc->cond = cond; |
c906108c SS |
6207 | if (cond_start) |
6208 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
6209 | else | |
6210 | b->cond_string = 0; | |
c5aa993b | 6211 | |
c906108c | 6212 | if (frame) |
d983da9c | 6213 | b->watchpoint_frame = get_frame_id (frame); |
c906108c | 6214 | else |
35a487f1 | 6215 | b->watchpoint_frame = null_frame_id; |
c906108c | 6216 | |
d983da9c | 6217 | if (scope_breakpoint != NULL) |
c906108c | 6218 | { |
d983da9c DJ |
6219 | /* The scope breakpoint is related to the watchpoint. We will |
6220 | need to act on them together. */ | |
6221 | b->related_breakpoint = scope_breakpoint; | |
6222 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 6223 | } |
d983da9c | 6224 | |
c906108c SS |
6225 | value_free_to_mark (mark); |
6226 | mention (b); | |
b60e7edf | 6227 | update_global_location_list (1); |
c906108c SS |
6228 | } |
6229 | ||
6230 | /* Return count of locations need to be watched and can be handled | |
6231 | in hardware. If the watchpoint can not be handled | |
6232 | in hardware return zero. */ | |
6233 | ||
c906108c | 6234 | static int |
fba45db2 | 6235 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
6236 | { |
6237 | int found_memory_cnt = 0; | |
2e70b7b9 | 6238 | struct value *head = v; |
c906108c SS |
6239 | |
6240 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 6241 | if (!can_use_hw_watchpoints) |
c906108c | 6242 | return 0; |
c5aa993b | 6243 | |
5c44784c JM |
6244 | /* Make sure that the value of the expression depends only upon |
6245 | memory contents, and values computed from them within GDB. If we | |
6246 | find any register references or function calls, we can't use a | |
6247 | hardware watchpoint. | |
6248 | ||
6249 | The idea here is that evaluating an expression generates a series | |
6250 | of values, one holding the value of every subexpression. (The | |
6251 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
6252 | a*b+c.) GDB's values hold almost enough information to establish | |
6253 | the criteria given above --- they identify memory lvalues, | |
6254 | register lvalues, computed values, etcetera. So we can evaluate | |
6255 | the expression, and then scan the chain of values that leaves | |
6256 | behind to decide whether we can detect any possible change to the | |
6257 | expression's final value using only hardware watchpoints. | |
6258 | ||
6259 | However, I don't think that the values returned by inferior | |
6260 | function calls are special in any way. So this function may not | |
6261 | notice that an expression involving an inferior function call | |
6262 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 6263 | for (; v; v = value_next (v)) |
c906108c | 6264 | { |
5c44784c | 6265 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 6266 | { |
d69fe07e | 6267 | if (value_lazy (v)) |
5c44784c JM |
6268 | /* A lazy memory lvalue is one that GDB never needed to fetch; |
6269 | we either just used its address (e.g., `a' in `a.b') or | |
6270 | we never needed it at all (e.g., `a' in `a,b'). */ | |
6271 | ; | |
53a5351d | 6272 | else |
5c44784c JM |
6273 | { |
6274 | /* Ahh, memory we actually used! Check if we can cover | |
6275 | it with hardware watchpoints. */ | |
df407dfe | 6276 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
6277 | |
6278 | /* We only watch structs and arrays if user asked for it | |
6279 | explicitly, never if they just happen to appear in a | |
6280 | middle of some value chain. */ | |
6281 | if (v == head | |
6282 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
6283 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
6284 | { | |
df407dfe AC |
6285 | CORE_ADDR vaddr = VALUE_ADDRESS (v) + value_offset (v); |
6286 | int len = TYPE_LENGTH (value_type (v)); | |
2e70b7b9 MS |
6287 | |
6288 | if (!TARGET_REGION_OK_FOR_HW_WATCHPOINT (vaddr, len)) | |
6289 | return 0; | |
6290 | else | |
6291 | found_memory_cnt++; | |
6292 | } | |
5c44784c | 6293 | } |
c5aa993b | 6294 | } |
5086187c AC |
6295 | else if (VALUE_LVAL (v) != not_lval |
6296 | && deprecated_value_modifiable (v) == 0) | |
53a5351d | 6297 | return 0; /* ??? What does this represent? */ |
5086187c | 6298 | else if (VALUE_LVAL (v) == lval_register) |
53a5351d | 6299 | return 0; /* cannot watch a register with a HW watchpoint */ |
c906108c SS |
6300 | } |
6301 | ||
6302 | /* The expression itself looks suitable for using a hardware | |
6303 | watchpoint, but give the target machine a chance to reject it. */ | |
6304 | return found_memory_cnt; | |
6305 | } | |
6306 | ||
8b93c638 | 6307 | void |
fba45db2 | 6308 | watch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6309 | { |
6310 | watch_command (arg, from_tty); | |
6311 | } | |
8926118c | 6312 | |
c5aa993b | 6313 | static void |
fba45db2 | 6314 | watch_command (char *arg, int from_tty) |
c906108c | 6315 | { |
53a5351d | 6316 | watch_command_1 (arg, hw_write, from_tty); |
c906108c SS |
6317 | } |
6318 | ||
8b93c638 | 6319 | void |
fba45db2 | 6320 | rwatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6321 | { |
6322 | rwatch_command (arg, from_tty); | |
6323 | } | |
8926118c | 6324 | |
c5aa993b | 6325 | static void |
fba45db2 | 6326 | rwatch_command (char *arg, int from_tty) |
c906108c | 6327 | { |
53a5351d | 6328 | watch_command_1 (arg, hw_read, from_tty); |
c906108c SS |
6329 | } |
6330 | ||
8b93c638 | 6331 | void |
fba45db2 | 6332 | awatch_command_wrapper (char *arg, int from_tty) |
8b93c638 JM |
6333 | { |
6334 | awatch_command (arg, from_tty); | |
6335 | } | |
8926118c | 6336 | |
c5aa993b | 6337 | static void |
fba45db2 | 6338 | awatch_command (char *arg, int from_tty) |
c906108c | 6339 | { |
53a5351d | 6340 | watch_command_1 (arg, hw_access, from_tty); |
c906108c | 6341 | } |
c906108c | 6342 | \f |
c5aa993b | 6343 | |
43ff13b4 | 6344 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
6345 | because it uses the mechanisms of breakpoints. */ |
6346 | ||
bfec99b2 PA |
6347 | struct until_break_command_continuation_args |
6348 | { | |
6349 | struct breakpoint *breakpoint; | |
6350 | struct breakpoint *breakpoint2; | |
6351 | }; | |
6352 | ||
43ff13b4 JM |
6353 | /* This function is called by fetch_inferior_event via the |
6354 | cmd_continuation pointer, to complete the until command. It takes | |
6355 | care of cleaning up the temporary breakpoints set up by the until | |
6356 | command. */ | |
c2c6d25f | 6357 | static void |
604ead4a | 6358 | until_break_command_continuation (void *arg) |
43ff13b4 | 6359 | { |
bfec99b2 PA |
6360 | struct until_break_command_continuation_args *a = arg; |
6361 | ||
6362 | delete_breakpoint (a->breakpoint); | |
6363 | if (a->breakpoint2) | |
6364 | delete_breakpoint (a->breakpoint2); | |
43ff13b4 JM |
6365 | } |
6366 | ||
c906108c | 6367 | void |
ae66c1fc | 6368 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
6369 | { |
6370 | struct symtabs_and_lines sals; | |
6371 | struct symtab_and_line sal; | |
206415a3 DJ |
6372 | struct frame_info *frame = get_selected_frame (NULL); |
6373 | struct frame_info *prev_frame = get_prev_frame (frame); | |
c906108c | 6374 | struct breakpoint *breakpoint; |
f107f563 | 6375 | struct breakpoint *breakpoint2 = NULL; |
c906108c SS |
6376 | struct cleanup *old_chain; |
6377 | ||
6378 | clear_proceed_status (); | |
6379 | ||
6380 | /* Set a breakpoint where the user wants it and at return from | |
6381 | this function */ | |
c5aa993b | 6382 | |
c906108c SS |
6383 | if (default_breakpoint_valid) |
6384 | sals = decode_line_1 (&arg, 1, default_breakpoint_symtab, | |
68219205 | 6385 | default_breakpoint_line, (char ***) NULL, NULL); |
c906108c | 6386 | else |
53a5351d | 6387 | sals = decode_line_1 (&arg, 1, (struct symtab *) NULL, |
68219205 | 6388 | 0, (char ***) NULL, NULL); |
c5aa993b | 6389 | |
c906108c | 6390 | if (sals.nelts != 1) |
8a3fe4f8 | 6391 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 6392 | |
c906108c | 6393 | sal = sals.sals[0]; |
b8c9b27d | 6394 | xfree (sals.sals); /* malloc'd, so freed */ |
c5aa993b | 6395 | |
c906108c | 6396 | if (*arg) |
8a3fe4f8 | 6397 | error (_("Junk at end of arguments.")); |
c5aa993b | 6398 | |
c906108c | 6399 | resolve_sal_pc (&sal); |
c5aa993b | 6400 | |
ae66c1fc EZ |
6401 | if (anywhere) |
6402 | /* If the user told us to continue until a specified location, | |
6403 | we don't specify a frame at which we need to stop. */ | |
6404 | breakpoint = set_momentary_breakpoint (sal, null_frame_id, bp_until); | |
6405 | else | |
6406 | /* Otherwise, specify the current frame, because we want to stop only | |
6407 | at the very same frame. */ | |
206415a3 | 6408 | breakpoint = set_momentary_breakpoint (sal, get_frame_id (frame), |
ae66c1fc | 6409 | bp_until); |
c5aa993b | 6410 | |
f107f563 | 6411 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
c906108c | 6412 | |
ae66c1fc EZ |
6413 | /* Keep within the current frame, or in frames called by the current |
6414 | one. */ | |
c906108c SS |
6415 | if (prev_frame) |
6416 | { | |
30f7db39 AC |
6417 | sal = find_pc_line (get_frame_pc (prev_frame), 0); |
6418 | sal.pc = get_frame_pc (prev_frame); | |
f107f563 VP |
6419 | breakpoint2 = set_momentary_breakpoint (sal, get_frame_id (prev_frame), |
6420 | bp_until); | |
6421 | make_cleanup_delete_breakpoint (breakpoint2); | |
c906108c | 6422 | } |
c5aa993b | 6423 | |
c906108c | 6424 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
f107f563 VP |
6425 | |
6426 | /* If we are running asynchronously, and proceed call above has actually | |
6427 | managed to start the target, arrange for breakpoints to be | |
6428 | deleted when the target stops. Otherwise, we're already stopped and | |
6429 | delete breakpoints via cleanup chain. */ | |
6430 | ||
8ea051c5 | 6431 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 6432 | { |
bfec99b2 PA |
6433 | struct until_break_command_continuation_args *args; |
6434 | args = xmalloc (sizeof (*args)); | |
f107f563 | 6435 | |
bfec99b2 PA |
6436 | args->breakpoint = breakpoint; |
6437 | args->breakpoint2 = breakpoint2; | |
f107f563 VP |
6438 | |
6439 | discard_cleanups (old_chain); | |
95e54da7 PA |
6440 | add_continuation (inferior_thread (), |
6441 | until_break_command_continuation, args, | |
604ead4a | 6442 | xfree); |
f107f563 VP |
6443 | } |
6444 | else | |
c5aa993b | 6445 | do_cleanups (old_chain); |
c906108c | 6446 | } |
ae66c1fc | 6447 | |
c906108c | 6448 | static void |
fba45db2 | 6449 | ep_skip_leading_whitespace (char **s) |
c906108c | 6450 | { |
c5aa993b JM |
6451 | if ((s == NULL) || (*s == NULL)) |
6452 | return; | |
6453 | while (isspace (**s)) | |
6454 | *s += 1; | |
c906108c | 6455 | } |
c5aa993b | 6456 | |
c906108c SS |
6457 | /* This function attempts to parse an optional "if <cond>" clause |
6458 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 6459 | |
c906108c SS |
6460 | Else, it returns a pointer to the condition string. (It does not |
6461 | attempt to evaluate the string against a particular block.) And, | |
6462 | it updates arg to point to the first character following the parsed | |
6463 | if clause in the arg string. */ | |
53a5351d | 6464 | |
c906108c | 6465 | static char * |
fba45db2 | 6466 | ep_parse_optional_if_clause (char **arg) |
c906108c | 6467 | { |
c5aa993b JM |
6468 | char *cond_string; |
6469 | ||
6470 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 6471 | return NULL; |
c5aa993b | 6472 | |
c906108c SS |
6473 | /* Skip the "if" keyword. */ |
6474 | (*arg) += 2; | |
c5aa993b | 6475 | |
c906108c SS |
6476 | /* Skip any extra leading whitespace, and record the start of the |
6477 | condition string. */ | |
6478 | ep_skip_leading_whitespace (arg); | |
6479 | cond_string = *arg; | |
c5aa993b | 6480 | |
c906108c SS |
6481 | /* Assume that the condition occupies the remainder of the arg string. */ |
6482 | (*arg) += strlen (cond_string); | |
c5aa993b | 6483 | |
c906108c SS |
6484 | return cond_string; |
6485 | } | |
c5aa993b | 6486 | |
c906108c SS |
6487 | /* This function attempts to parse an optional filename from the arg |
6488 | string. If one is not found, it returns NULL. | |
c5aa993b | 6489 | |
c906108c SS |
6490 | Else, it returns a pointer to the parsed filename. (This function |
6491 | makes no attempt to verify that a file of that name exists, or is | |
6492 | accessible.) And, it updates arg to point to the first character | |
6493 | following the parsed filename in the arg string. | |
c5aa993b | 6494 | |
c906108c SS |
6495 | Note that clients needing to preserve the returned filename for |
6496 | future access should copy it to their own buffers. */ | |
6497 | static char * | |
fba45db2 | 6498 | ep_parse_optional_filename (char **arg) |
c906108c | 6499 | { |
c5aa993b JM |
6500 | static char filename[1024]; |
6501 | char *arg_p = *arg; | |
6502 | int i; | |
6503 | char c; | |
6504 | ||
c906108c SS |
6505 | if ((*arg_p == '\0') || isspace (*arg_p)) |
6506 | return NULL; | |
c5aa993b JM |
6507 | |
6508 | for (i = 0;; i++) | |
c906108c SS |
6509 | { |
6510 | c = *arg_p; | |
6511 | if (isspace (c)) | |
c5aa993b | 6512 | c = '\0'; |
c906108c SS |
6513 | filename[i] = c; |
6514 | if (c == '\0') | |
c5aa993b | 6515 | break; |
c906108c SS |
6516 | arg_p++; |
6517 | } | |
6518 | *arg = arg_p; | |
c5aa993b | 6519 | |
c906108c SS |
6520 | return filename; |
6521 | } | |
c5aa993b | 6522 | |
c906108c SS |
6523 | /* Commands to deal with catching events, such as signals, exceptions, |
6524 | process start/exit, etc. */ | |
c5aa993b JM |
6525 | |
6526 | typedef enum | |
6527 | { | |
44feb3ce TT |
6528 | catch_fork_temporary, catch_vfork_temporary, |
6529 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
6530 | } |
6531 | catch_fork_kind; | |
6532 | ||
c906108c | 6533 | static void |
44feb3ce | 6534 | catch_fork_command_1 (char *arg, int from_tty, struct cmd_list_element *command) |
c906108c | 6535 | { |
c5aa993b | 6536 | char *cond_string = NULL; |
44feb3ce TT |
6537 | catch_fork_kind fork_kind; |
6538 | int tempflag; | |
6539 | ||
6540 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
6541 | tempflag = (fork_kind == catch_fork_temporary | |
6542 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 6543 | |
44feb3ce TT |
6544 | if (!arg) |
6545 | arg = ""; | |
c906108c | 6546 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6547 | |
c906108c | 6548 | /* The allowed syntax is: |
c5aa993b JM |
6549 | catch [v]fork |
6550 | catch [v]fork if <cond> | |
6551 | ||
c906108c SS |
6552 | First, check if there's an if clause. */ |
6553 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6554 | |
c906108c | 6555 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6556 | error (_("Junk at end of arguments.")); |
c5aa993b | 6557 | |
c906108c SS |
6558 | /* If this target supports it, create a fork or vfork catchpoint |
6559 | and enable reporting of such events. */ | |
c5aa993b JM |
6560 | switch (fork_kind) |
6561 | { | |
44feb3ce TT |
6562 | case catch_fork_temporary: |
6563 | case catch_fork_permanent: | |
ce78b96d JB |
6564 | create_fork_vfork_event_catchpoint (tempflag, cond_string, |
6565 | &catch_fork_breakpoint_ops); | |
c906108c | 6566 | break; |
44feb3ce TT |
6567 | case catch_vfork_temporary: |
6568 | case catch_vfork_permanent: | |
ce78b96d JB |
6569 | create_fork_vfork_event_catchpoint (tempflag, cond_string, |
6570 | &catch_vfork_breakpoint_ops); | |
c906108c | 6571 | break; |
c5aa993b | 6572 | default: |
8a3fe4f8 | 6573 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 6574 | break; |
c5aa993b | 6575 | } |
c906108c SS |
6576 | } |
6577 | ||
6578 | static void | |
44feb3ce | 6579 | catch_exec_command_1 (char *arg, int from_tty, struct cmd_list_element *command) |
c906108c | 6580 | { |
44feb3ce | 6581 | int tempflag; |
c5aa993b | 6582 | char *cond_string = NULL; |
c906108c | 6583 | |
44feb3ce TT |
6584 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
6585 | ||
6586 | if (!arg) | |
6587 | arg = ""; | |
c906108c SS |
6588 | ep_skip_leading_whitespace (&arg); |
6589 | ||
6590 | /* The allowed syntax is: | |
c5aa993b JM |
6591 | catch exec |
6592 | catch exec if <cond> | |
c906108c SS |
6593 | |
6594 | First, check if there's an if clause. */ | |
6595 | cond_string = ep_parse_optional_if_clause (&arg); | |
6596 | ||
6597 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6598 | error (_("Junk at end of arguments.")); |
c906108c SS |
6599 | |
6600 | /* If this target supports it, create an exec catchpoint | |
6601 | and enable reporting of such events. */ | |
fe798b75 | 6602 | create_catchpoint (tempflag, cond_string, &catch_exec_breakpoint_ops); |
c906108c | 6603 | } |
c5aa993b | 6604 | |
c906108c | 6605 | static void |
44feb3ce | 6606 | catch_load_command_1 (char *arg, int from_tty, struct cmd_list_element *command) |
c906108c | 6607 | { |
44feb3ce | 6608 | int tempflag; |
c5aa993b JM |
6609 | char *dll_pathname = NULL; |
6610 | char *cond_string = NULL; | |
6611 | ||
44feb3ce TT |
6612 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
6613 | ||
6614 | if (!arg) | |
6615 | arg = ""; | |
c906108c | 6616 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6617 | |
c906108c | 6618 | /* The allowed syntax is: |
c5aa993b JM |
6619 | catch load |
6620 | catch load if <cond> | |
6621 | catch load <filename> | |
6622 | catch load <filename> if <cond> | |
6623 | ||
c906108c SS |
6624 | The user is not allowed to specify the <filename> after an |
6625 | if clause. | |
c5aa993b | 6626 | |
c906108c | 6627 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6628 | |
c906108c SS |
6629 | First, check if there's an if clause. If so, then there |
6630 | cannot be a filename. */ | |
6631 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6632 | |
c906108c SS |
6633 | /* If there was an if clause, then there cannot be a filename. |
6634 | Else, there might be a filename and an if clause. */ | |
6635 | if (cond_string == NULL) | |
6636 | { | |
6637 | dll_pathname = ep_parse_optional_filename (&arg); | |
6638 | ep_skip_leading_whitespace (&arg); | |
6639 | cond_string = ep_parse_optional_if_clause (&arg); | |
6640 | } | |
c5aa993b | 6641 | |
c906108c | 6642 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6643 | error (_("Junk at end of arguments.")); |
c5aa993b | 6644 | |
c906108c SS |
6645 | /* Create a load breakpoint that only triggers when a load of |
6646 | the specified dll (or any dll, if no pathname was specified) | |
6647 | occurs. */ | |
39f77062 | 6648 | SOLIB_CREATE_CATCH_LOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6649 | dll_pathname, cond_string); |
c906108c | 6650 | } |
c5aa993b | 6651 | |
c906108c | 6652 | static void |
44feb3ce TT |
6653 | catch_unload_command_1 (char *arg, int from_tty, |
6654 | struct cmd_list_element *command) | |
c906108c | 6655 | { |
44feb3ce | 6656 | int tempflag; |
c5aa993b JM |
6657 | char *dll_pathname = NULL; |
6658 | char *cond_string = NULL; | |
6659 | ||
44feb3ce TT |
6660 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
6661 | ||
6662 | if (!arg) | |
6663 | arg = ""; | |
c906108c | 6664 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6665 | |
c906108c | 6666 | /* The allowed syntax is: |
c5aa993b JM |
6667 | catch unload |
6668 | catch unload if <cond> | |
6669 | catch unload <filename> | |
6670 | catch unload <filename> if <cond> | |
6671 | ||
c906108c SS |
6672 | The user is not allowed to specify the <filename> after an |
6673 | if clause. | |
c5aa993b | 6674 | |
c906108c | 6675 | We'll ignore the pathological case of a file named "if". |
c5aa993b | 6676 | |
c906108c SS |
6677 | First, check if there's an if clause. If so, then there |
6678 | cannot be a filename. */ | |
6679 | cond_string = ep_parse_optional_if_clause (&arg); | |
c5aa993b | 6680 | |
c906108c SS |
6681 | /* If there was an if clause, then there cannot be a filename. |
6682 | Else, there might be a filename and an if clause. */ | |
6683 | if (cond_string == NULL) | |
6684 | { | |
6685 | dll_pathname = ep_parse_optional_filename (&arg); | |
6686 | ep_skip_leading_whitespace (&arg); | |
6687 | cond_string = ep_parse_optional_if_clause (&arg); | |
6688 | } | |
c5aa993b | 6689 | |
c906108c | 6690 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 6691 | error (_("Junk at end of arguments.")); |
c5aa993b | 6692 | |
c906108c SS |
6693 | /* Create an unload breakpoint that only triggers when an unload of |
6694 | the specified dll (or any dll, if no pathname was specified) | |
6695 | occurs. */ | |
39f77062 | 6696 | SOLIB_CREATE_CATCH_UNLOAD_HOOK (PIDGET (inferior_ptid), tempflag, |
53a5351d | 6697 | dll_pathname, cond_string); |
c906108c | 6698 | } |
c906108c | 6699 | |
3086aeae DJ |
6700 | static enum print_stop_action |
6701 | print_exception_catchpoint (struct breakpoint *b) | |
6702 | { | |
ade92717 | 6703 | int bp_temp, bp_throw; |
3086aeae | 6704 | |
ade92717 | 6705 | annotate_catchpoint (b->number); |
3086aeae | 6706 | |
ade92717 AR |
6707 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
6708 | if (b->loc->address != b->loc->requested_address) | |
6709 | breakpoint_adjustment_warning (b->loc->requested_address, | |
6710 | b->loc->address, | |
6711 | b->number, 1); | |
6712 | bp_temp = b->loc->owner->disposition == disp_del; | |
6713 | ui_out_text (uiout, | |
6714 | bp_temp ? "Temporary catchpoint " | |
6715 | : "Catchpoint "); | |
6716 | if (!ui_out_is_mi_like_p (uiout)) | |
6717 | ui_out_field_int (uiout, "bkptno", b->number); | |
6718 | ui_out_text (uiout, | |
c0b37c48 AR |
6719 | bp_throw ? " (exception thrown), " |
6720 | : " (exception caught), "); | |
ade92717 AR |
6721 | if (ui_out_is_mi_like_p (uiout)) |
6722 | { | |
6723 | ui_out_field_string (uiout, "reason", | |
6724 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
6725 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
6726 | ui_out_field_int (uiout, "bkptno", b->number); | |
6727 | } | |
3086aeae DJ |
6728 | return PRINT_SRC_AND_LOC; |
6729 | } | |
6730 | ||
6731 | static void | |
6732 | print_one_exception_catchpoint (struct breakpoint *b, CORE_ADDR *last_addr) | |
6733 | { | |
79a45b7d TT |
6734 | struct value_print_options opts; |
6735 | get_user_print_options (&opts); | |
6736 | if (opts.addressprint) | |
3086aeae DJ |
6737 | { |
6738 | annotate_field (4); | |
604133b5 AR |
6739 | if (b->loc == NULL || b->loc->shlib_disabled) |
6740 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
6741 | else | |
6742 | ui_out_field_core_addr (uiout, "addr", b->loc->address); | |
3086aeae DJ |
6743 | } |
6744 | annotate_field (5); | |
604133b5 AR |
6745 | if (b->loc) |
6746 | *last_addr = b->loc->address; | |
3086aeae DJ |
6747 | if (strstr (b->addr_string, "throw") != NULL) |
6748 | ui_out_field_string (uiout, "what", "exception throw"); | |
6749 | else | |
6750 | ui_out_field_string (uiout, "what", "exception catch"); | |
6751 | } | |
6752 | ||
6753 | static void | |
6754 | print_mention_exception_catchpoint (struct breakpoint *b) | |
6755 | { | |
ade92717 AR |
6756 | int bp_temp; |
6757 | int bp_throw; | |
6758 | ||
6759 | bp_temp = b->loc->owner->disposition == disp_del; | |
6760 | bp_throw = strstr (b->addr_string, "throw") != NULL; | |
6761 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
6762 | : _("Catchpoint ")); | |
6763 | ui_out_field_int (uiout, "bkptno", b->number); | |
6764 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
6765 | : _(" (catch)")); | |
3086aeae DJ |
6766 | } |
6767 | ||
6768 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops = { | |
ce78b96d JB |
6769 | NULL, /* insert */ |
6770 | NULL, /* remove */ | |
6771 | NULL, /* breakpoint_hit */ | |
3086aeae DJ |
6772 | print_exception_catchpoint, |
6773 | print_one_exception_catchpoint, | |
6774 | print_mention_exception_catchpoint | |
6775 | }; | |
6776 | ||
6777 | static int | |
6778 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
6779 | enum exception_event_kind ex_event, int from_tty) | |
6780 | { | |
604133b5 AR |
6781 | char *trigger_func_name; |
6782 | ||
3086aeae | 6783 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 6784 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 6785 | else |
604133b5 | 6786 | trigger_func_name = "__cxa_throw"; |
3086aeae | 6787 | |
604133b5 AR |
6788 | break_command_really (trigger_func_name, cond_string, -1, |
6789 | 0 /* condition and thread are valid. */, | |
ade92717 | 6790 | tempflag, 0, |
604133b5 AR |
6791 | 0, |
6792 | AUTO_BOOLEAN_TRUE /* pending */, | |
6793 | &gnu_v3_exception_catchpoint_ops, from_tty); | |
3086aeae | 6794 | |
3086aeae DJ |
6795 | return 1; |
6796 | } | |
6797 | ||
c5aa993b | 6798 | /* Deal with "catch catch" and "catch throw" commands */ |
c906108c SS |
6799 | |
6800 | static void | |
fba45db2 KB |
6801 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
6802 | int tempflag, int from_tty) | |
c906108c | 6803 | { |
c5aa993b JM |
6804 | char *cond_string = NULL; |
6805 | struct symtab_and_line *sal = NULL; | |
6806 | ||
44feb3ce TT |
6807 | if (!arg) |
6808 | arg = ""; | |
c906108c | 6809 | ep_skip_leading_whitespace (&arg); |
c5aa993b | 6810 | |
c906108c SS |
6811 | cond_string = ep_parse_optional_if_clause (&arg); |
6812 | ||
6813 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 6814 | error (_("Junk at end of arguments.")); |
c906108c SS |
6815 | |
6816 | if ((ex_event != EX_EVENT_THROW) && | |
6817 | (ex_event != EX_EVENT_CATCH)) | |
8a3fe4f8 | 6818 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 6819 | |
3086aeae DJ |
6820 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
6821 | return; | |
6822 | ||
8a3fe4f8 | 6823 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
6824 | } |
6825 | ||
44feb3ce TT |
6826 | /* Implementation of "catch catch" command. */ |
6827 | ||
6828 | static void | |
6829 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
6830 | { | |
6831 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
6832 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); | |
6833 | } | |
6834 | ||
6835 | /* Implementation of "catch throw" command. */ | |
6836 | ||
6837 | static void | |
6838 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
6839 | { | |
6840 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
6841 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); | |
6842 | } | |
6843 | ||
f7f9143b JB |
6844 | /* Create a breakpoint struct for Ada exception catchpoints. */ |
6845 | ||
6846 | static void | |
6847 | create_ada_exception_breakpoint (struct symtab_and_line sal, | |
6848 | char *addr_string, | |
6849 | char *exp_string, | |
6850 | char *cond_string, | |
6851 | struct expression *cond, | |
6852 | struct breakpoint_ops *ops, | |
6853 | int tempflag, | |
6854 | int from_tty) | |
6855 | { | |
6856 | struct breakpoint *b; | |
6857 | ||
6858 | if (from_tty) | |
6859 | { | |
6860 | describe_other_breakpoints (sal.pc, sal.section, -1); | |
6861 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special | |
6862 | version for exception catchpoints, because two catchpoints | |
6863 | used for different exception names will use the same address. | |
6864 | In this case, a "breakpoint ... also set at..." warning is | |
6865 | unproductive. Besides. the warning phrasing is also a bit | |
6866 | inapropriate, we should use the word catchpoint, and tell | |
6867 | the user what type of catchpoint it is. The above is good | |
6868 | enough for now, though. */ | |
6869 | } | |
6870 | ||
6871 | b = set_raw_breakpoint (sal, bp_breakpoint); | |
6872 | set_breakpoint_count (breakpoint_count + 1); | |
6873 | ||
6874 | b->enable_state = bp_enabled; | |
6875 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
6876 | b->number = breakpoint_count; | |
6877 | b->ignore_count = 0; | |
511a6cd4 | 6878 | b->loc->cond = cond; |
f7f9143b JB |
6879 | b->addr_string = addr_string; |
6880 | b->language = language_ada; | |
6881 | b->cond_string = cond_string; | |
6882 | b->exp_string = exp_string; | |
6883 | b->thread = -1; | |
6884 | b->ops = ops; | |
f7f9143b JB |
6885 | |
6886 | mention (b); | |
b60e7edf | 6887 | update_global_location_list (1); |
f7f9143b JB |
6888 | } |
6889 | ||
6890 | /* Implement the "catch exception" command. */ | |
6891 | ||
6892 | static void | |
44feb3ce TT |
6893 | catch_ada_exception_command (char *arg, int from_tty, |
6894 | struct cmd_list_element *command) | |
f7f9143b | 6895 | { |
44feb3ce | 6896 | int tempflag; |
f7f9143b JB |
6897 | struct symtab_and_line sal; |
6898 | enum bptype type; | |
6899 | char *addr_string = NULL; | |
6900 | char *exp_string = NULL; | |
6901 | char *cond_string = NULL; | |
6902 | struct expression *cond = NULL; | |
6903 | struct breakpoint_ops *ops = NULL; | |
6904 | ||
44feb3ce TT |
6905 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
6906 | ||
6907 | if (!arg) | |
6908 | arg = ""; | |
f7f9143b JB |
6909 | sal = ada_decode_exception_location (arg, &addr_string, &exp_string, |
6910 | &cond_string, &cond, &ops); | |
6911 | create_ada_exception_breakpoint (sal, addr_string, exp_string, | |
6912 | cond_string, cond, ops, tempflag, | |
6913 | from_tty); | |
6914 | } | |
6915 | ||
6916 | /* Implement the "catch assert" command. */ | |
6917 | ||
6918 | static void | |
44feb3ce | 6919 | catch_assert_command (char *arg, int from_tty, struct cmd_list_element *command) |
f7f9143b | 6920 | { |
44feb3ce | 6921 | int tempflag; |
f7f9143b JB |
6922 | struct symtab_and_line sal; |
6923 | char *addr_string = NULL; | |
6924 | struct breakpoint_ops *ops = NULL; | |
6925 | ||
44feb3ce TT |
6926 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
6927 | ||
6928 | if (!arg) | |
6929 | arg = ""; | |
f7f9143b JB |
6930 | sal = ada_decode_assert_location (arg, &addr_string, &ops); |
6931 | create_ada_exception_breakpoint (sal, addr_string, NULL, NULL, NULL, ops, | |
6932 | tempflag, from_tty); | |
6933 | } | |
6934 | ||
c906108c | 6935 | static void |
fba45db2 | 6936 | catch_command (char *arg, int from_tty) |
c906108c | 6937 | { |
44feb3ce | 6938 | error (_("Catch requires an event name.")); |
c906108c SS |
6939 | } |
6940 | \f | |
6941 | ||
6942 | static void | |
fba45db2 | 6943 | tcatch_command (char *arg, int from_tty) |
c906108c | 6944 | { |
44feb3ce | 6945 | error (_("Catch requires an event name.")); |
c906108c SS |
6946 | } |
6947 | ||
80f8a6eb | 6948 | /* Delete breakpoints by address or line. */ |
c906108c SS |
6949 | |
6950 | static void | |
fba45db2 | 6951 | clear_command (char *arg, int from_tty) |
c906108c | 6952 | { |
d6e956e5 VP |
6953 | struct breakpoint *b; |
6954 | VEC(breakpoint_p) *found = 0; | |
6955 | int ix; | |
c906108c SS |
6956 | int default_match; |
6957 | struct symtabs_and_lines sals; | |
6958 | struct symtab_and_line sal; | |
c906108c SS |
6959 | int i; |
6960 | ||
6961 | if (arg) | |
6962 | { | |
6963 | sals = decode_line_spec (arg, 1); | |
6964 | default_match = 0; | |
6965 | } | |
6966 | else | |
6967 | { | |
c5aa993b | 6968 | sals.sals = (struct symtab_and_line *) |
c906108c | 6969 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 6970 | make_cleanup (xfree, sals.sals); |
fe39c653 | 6971 | init_sal (&sal); /* initialize to zeroes */ |
c906108c SS |
6972 | sal.line = default_breakpoint_line; |
6973 | sal.symtab = default_breakpoint_symtab; | |
6974 | sal.pc = default_breakpoint_address; | |
6975 | if (sal.symtab == 0) | |
8a3fe4f8 | 6976 | error (_("No source file specified.")); |
c906108c SS |
6977 | |
6978 | sals.sals[0] = sal; | |
6979 | sals.nelts = 1; | |
6980 | ||
6981 | default_match = 1; | |
6982 | } | |
6983 | ||
ed0616c6 VP |
6984 | /* We don't call resolve_sal_pc here. That's not |
6985 | as bad as it seems, because all existing breakpoints | |
6986 | typically have both file/line and pc set. So, if | |
6987 | clear is given file/line, we can match this to existing | |
6988 | breakpoint without obtaining pc at all. | |
6989 | ||
6990 | We only support clearing given the address explicitly | |
6991 | present in breakpoint table. Say, we've set breakpoint | |
6992 | at file:line. There were several PC values for that file:line, | |
6993 | due to optimization, all in one block. | |
6994 | We've picked one PC value. If "clear" is issued with another | |
6995 | PC corresponding to the same file:line, the breakpoint won't | |
6996 | be cleared. We probably can still clear the breakpoint, but | |
6997 | since the other PC value is never presented to user, user | |
6998 | can only find it by guessing, and it does not seem important | |
6999 | to support that. */ | |
7000 | ||
c906108c | 7001 | /* For each line spec given, delete bps which correspond |
80f8a6eb MS |
7002 | to it. Do it in two passes, solely to preserve the current |
7003 | behavior that from_tty is forced true if we delete more than | |
7004 | one breakpoint. */ | |
c906108c | 7005 | |
80f8a6eb | 7006 | found = NULL; |
c906108c SS |
7007 | for (i = 0; i < sals.nelts; i++) |
7008 | { | |
7009 | /* If exact pc given, clear bpts at that pc. | |
c5aa993b JM |
7010 | If line given (pc == 0), clear all bpts on specified line. |
7011 | If defaulting, clear all bpts on default line | |
c906108c | 7012 | or at default pc. |
c5aa993b JM |
7013 | |
7014 | defaulting sal.pc != 0 tests to do | |
7015 | ||
7016 | 0 1 pc | |
7017 | 1 1 pc _and_ line | |
7018 | 0 0 line | |
7019 | 1 0 <can't happen> */ | |
c906108c SS |
7020 | |
7021 | sal = sals.sals[i]; | |
c906108c | 7022 | |
d6e956e5 VP |
7023 | /* Find all matching breakpoints and add them to |
7024 | 'found'. */ | |
7025 | ALL_BREAKPOINTS (b) | |
c5aa993b | 7026 | { |
0d381245 | 7027 | int match = 0; |
80f8a6eb MS |
7028 | /* Are we going to delete b? */ |
7029 | if (b->type != bp_none | |
7030 | && b->type != bp_watchpoint | |
7031 | && b->type != bp_hardware_watchpoint | |
7032 | && b->type != bp_read_watchpoint | |
0d381245 VP |
7033 | && b->type != bp_access_watchpoint) |
7034 | { | |
7035 | struct bp_location *loc = b->loc; | |
7036 | for (; loc; loc = loc->next) | |
7037 | { | |
7038 | int pc_match = sal.pc | |
7039 | && (loc->address == sal.pc) | |
7040 | && (!section_is_overlay (loc->section) | |
7041 | || loc->section == sal.section); | |
7042 | int line_match = ((default_match || (0 == sal.pc)) | |
7043 | && b->source_file != NULL | |
7044 | && sal.symtab != NULL | |
7045 | && strcmp (b->source_file, sal.symtab->filename) == 0 | |
7046 | && b->line_number == sal.line); | |
7047 | if (pc_match || line_match) | |
7048 | { | |
7049 | match = 1; | |
7050 | break; | |
7051 | } | |
7052 | } | |
7053 | } | |
7054 | ||
7055 | if (match) | |
d6e956e5 | 7056 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 7057 | } |
80f8a6eb MS |
7058 | } |
7059 | /* Now go thru the 'found' chain and delete them. */ | |
d6e956e5 | 7060 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
7061 | { |
7062 | if (arg) | |
8a3fe4f8 | 7063 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 7064 | else |
8a3fe4f8 | 7065 | error (_("No breakpoint at this line.")); |
80f8a6eb | 7066 | } |
c906108c | 7067 | |
d6e956e5 | 7068 | if (VEC_length(breakpoint_p, found) > 1) |
80f8a6eb MS |
7069 | from_tty = 1; /* Always report if deleted more than one */ |
7070 | if (from_tty) | |
a3f17187 | 7071 | { |
d6e956e5 | 7072 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
7073 | printf_unfiltered (_("Deleted breakpoint ")); |
7074 | else | |
7075 | printf_unfiltered (_("Deleted breakpoints ")); | |
7076 | } | |
80f8a6eb | 7077 | breakpoints_changed (); |
d6e956e5 VP |
7078 | |
7079 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 7080 | { |
c5aa993b | 7081 | if (from_tty) |
d6e956e5 VP |
7082 | printf_unfiltered ("%d ", b->number); |
7083 | delete_breakpoint (b); | |
c906108c | 7084 | } |
80f8a6eb MS |
7085 | if (from_tty) |
7086 | putchar_unfiltered ('\n'); | |
c906108c SS |
7087 | } |
7088 | \f | |
7089 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
7090 | all breakpoints that are marked for deletion, whether hit or not. | |
7091 | This is called after any breakpoint is hit, or after errors. */ | |
7092 | ||
7093 | void | |
fba45db2 | 7094 | breakpoint_auto_delete (bpstat bs) |
c906108c SS |
7095 | { |
7096 | struct breakpoint *b, *temp; | |
7097 | ||
7098 | for (; bs; bs = bs->next) | |
20874c92 VP |
7099 | if (bs->breakpoint_at |
7100 | && bs->breakpoint_at->owner | |
7101 | && bs->breakpoint_at->owner->disposition == disp_del | |
c906108c | 7102 | && bs->stop) |
4f8d1dc6 | 7103 | delete_breakpoint (bs->breakpoint_at->owner); |
c906108c SS |
7104 | |
7105 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7106 | { |
b5de0fa7 | 7107 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
7108 | delete_breakpoint (b); |
7109 | } | |
c906108c SS |
7110 | } |
7111 | ||
b60e7edf PA |
7112 | /* If SHOULD_INSERT is true, do not insert any breakpoint locations |
7113 | into the inferior, only remove already-inserted locations that no | |
7114 | longer should be inserted. Functions that delete a breakpoint or | |
7115 | breakpoints should pass false, so that deleting a breakpoint | |
7116 | doesn't have the side effect of inserting the locations of other | |
7117 | breakpoints that are marked not-inserted, but should_be_inserted | |
7118 | returns true on them. | |
7119 | ||
7120 | This behaviour is useful is situations close to tear-down -- e.g., | |
7121 | after an exec, while the target still has execution, but breakpoint | |
7122 | shadows of the previous executable image should *NOT* be restored | |
7123 | to the new image; or before detaching, where the target still has | |
7124 | execution and wants to delete breakpoints from GDB's lists, and all | |
7125 | breakpoints had already been removed from the inferior. */ | |
7126 | ||
0d381245 | 7127 | static void |
b60e7edf | 7128 | update_global_location_list (int should_insert) |
0d381245 | 7129 | { |
74960c60 VP |
7130 | struct breakpoint *b; |
7131 | struct bp_location **next = &bp_location_chain; | |
7132 | struct bp_location *loc; | |
7133 | struct bp_location *loc2; | |
7134 | struct gdb_exception e; | |
7135 | VEC(bp_location_p) *old_locations = NULL; | |
7136 | int ret; | |
7137 | int ix; | |
7138 | ||
7139 | /* Store old locations for future reference. */ | |
7140 | for (loc = bp_location_chain; loc; loc = loc->global_next) | |
7141 | VEC_safe_push (bp_location_p, old_locations, loc); | |
0d381245 | 7142 | |
74960c60 VP |
7143 | bp_location_chain = NULL; |
7144 | ALL_BREAKPOINTS (b) | |
0d381245 | 7145 | { |
74960c60 | 7146 | for (loc = b->loc; loc; loc = loc->next) |
0d381245 | 7147 | { |
74960c60 VP |
7148 | *next = loc; |
7149 | next = &(loc->global_next); | |
7150 | *next = NULL; | |
0d381245 | 7151 | } |
74960c60 VP |
7152 | } |
7153 | ||
7154 | /* Identify bp_location instances that are no longer present in the new | |
7155 | list, and therefore should be freed. Note that it's not necessary that | |
7156 | those locations should be removed from inferior -- if there's another | |
7157 | location at the same address (previously marked as duplicate), | |
7158 | we don't need to remove/insert the location. */ | |
7159 | for (ix = 0; VEC_iterate(bp_location_p, old_locations, ix, loc); ++ix) | |
7160 | { | |
7161 | /* Tells if 'loc' is found amoung the new locations. If not, we | |
7162 | have to free it. */ | |
7163 | int found_object = 0; | |
20874c92 VP |
7164 | /* Tells if the location should remain inserted in the target. */ |
7165 | int keep_in_target = 0; | |
7166 | int removed = 0; | |
74960c60 VP |
7167 | for (loc2 = bp_location_chain; loc2; loc2 = loc2->global_next) |
7168 | if (loc2 == loc) | |
7169 | { | |
7170 | found_object = 1; | |
7171 | break; | |
7172 | } | |
7173 | ||
7174 | /* If this location is no longer present, and inserted, look if there's | |
7175 | maybe a new location at the same address. If so, mark that one | |
7176 | inserted, and don't remove this one. This is needed so that we | |
7177 | don't have a time window where a breakpoint at certain location is not | |
7178 | inserted. */ | |
7179 | ||
7180 | if (loc->inserted) | |
0d381245 | 7181 | { |
74960c60 | 7182 | /* If the location is inserted now, we might have to remove it. */ |
74960c60 VP |
7183 | |
7184 | if (found_object && should_be_inserted (loc)) | |
7185 | { | |
7186 | /* The location is still present in the location list, and still | |
7187 | should be inserted. Don't do anything. */ | |
20874c92 | 7188 | keep_in_target = 1; |
74960c60 VP |
7189 | } |
7190 | else | |
7191 | { | |
7192 | /* The location is either no longer present, or got disabled. | |
7193 | See if there's another location at the same address, in which | |
7194 | case we don't need to remove this one from the target. */ | |
7195 | if (breakpoint_address_is_meaningful (loc->owner)) | |
7196 | for (loc2 = bp_location_chain; loc2; loc2 = loc2->global_next) | |
7197 | { | |
7198 | /* For the sake of should_insert_location. The | |
7199 | call to check_duplicates will fix up this later. */ | |
7200 | loc2->duplicate = 0; | |
7201 | if (should_be_inserted (loc2) | |
7202 | && loc2 != loc && loc2->address == loc->address) | |
7203 | { | |
7204 | loc2->inserted = 1; | |
7205 | loc2->target_info = loc->target_info; | |
20874c92 | 7206 | keep_in_target = 1; |
74960c60 VP |
7207 | break; |
7208 | } | |
7209 | } | |
7210 | } | |
7211 | ||
20874c92 VP |
7212 | if (!keep_in_target) |
7213 | { | |
7214 | if (remove_breakpoint (loc, mark_uninserted)) | |
7215 | { | |
7216 | /* This is just about all we can do. We could keep this | |
7217 | location on the global list, and try to remove it next | |
7218 | time, but there's no particular reason why we will | |
7219 | succeed next time. | |
7220 | ||
7221 | Note that at this point, loc->owner is still valid, | |
7222 | as delete_breakpoint frees the breakpoint only | |
7223 | after calling us. */ | |
7224 | printf_filtered (_("warning: Error removing breakpoint %d\n"), | |
7225 | loc->owner->number); | |
7226 | } | |
7227 | removed = 1; | |
7228 | } | |
0d381245 | 7229 | } |
74960c60 VP |
7230 | |
7231 | if (!found_object) | |
1c5cfe86 PA |
7232 | { |
7233 | if (removed && non_stop) | |
20874c92 VP |
7234 | { |
7235 | /* This location was removed from the targets. In non-stop mode, | |
7236 | a race condition is possible where we've removed a breakpoint, | |
7237 | but stop events for that breakpoint are already queued and will | |
7238 | arrive later. To suppress spurious SIGTRAPs reported to user, | |
7239 | we keep this breakpoint location for a bit, and will retire it | |
7240 | after we see 3 * thread_count events. | |
1c5cfe86 | 7241 | The theory here is that reporting of events should, |
20874c92 VP |
7242 | "on the average", be fair, so after that many event we'll see |
7243 | events from all threads that have anything of interest, and no | |
1c5cfe86 | 7244 | longer need to keep this breakpoint. This is just a |
20874c92 | 7245 | heuristic, but if it's wrong, we'll report unexpected SIGTRAP, |
1c5cfe86 | 7246 | which is usability issue, but not a correctness problem. */ |
20874c92 VP |
7247 | loc->events_till_retirement = 3 * (thread_count () + 1); |
7248 | loc->owner = NULL; | |
20874c92 | 7249 | |
1c5cfe86 PA |
7250 | VEC_safe_push (bp_location_p, moribund_locations, loc); |
7251 | } | |
7252 | else | |
7253 | free_bp_location (loc); | |
20874c92 | 7254 | } |
74960c60 | 7255 | } |
1c5cfe86 | 7256 | |
74960c60 VP |
7257 | ALL_BREAKPOINTS (b) |
7258 | { | |
7259 | check_duplicates (b); | |
0d381245 | 7260 | } |
74960c60 | 7261 | |
a12654ce PA |
7262 | if (breakpoints_always_inserted_mode () |
7263 | && should_insert | |
7264 | && target_has_execution) | |
74960c60 VP |
7265 | insert_breakpoint_locations (); |
7266 | } | |
7267 | ||
20874c92 VP |
7268 | void |
7269 | breakpoint_retire_moribund (void) | |
7270 | { | |
7271 | struct bp_location *loc; | |
7272 | int ix; | |
7273 | ||
7274 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
7275 | if (--(loc->events_till_retirement) == 0) | |
7276 | { | |
7277 | free_bp_location (loc); | |
7278 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
7279 | --ix; | |
7280 | } | |
7281 | } | |
7282 | ||
74960c60 | 7283 | static void |
b60e7edf | 7284 | update_global_location_list_nothrow (int inserting) |
74960c60 VP |
7285 | { |
7286 | struct gdb_exception e; | |
7287 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
b60e7edf | 7288 | update_global_location_list (inserting); |
0d381245 VP |
7289 | } |
7290 | ||
a474d7c2 PA |
7291 | /* Clear BPT from a BPS. */ |
7292 | static void | |
7293 | bpstat_remove_breakpoint (bpstat bps, struct breakpoint *bpt) | |
7294 | { | |
7295 | bpstat bs; | |
7296 | for (bs = bps; bs; bs = bs->next) | |
7297 | if (bs->breakpoint_at && bs->breakpoint_at->owner == bpt) | |
7298 | { | |
7299 | bs->breakpoint_at = NULL; | |
7300 | bs->old_val = NULL; | |
7301 | /* bs->commands will be freed later. */ | |
7302 | } | |
7303 | } | |
7304 | ||
7305 | /* Callback for iterate_over_threads. */ | |
7306 | static int | |
7307 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
7308 | { | |
7309 | struct breakpoint *bpt = data; | |
7310 | bpstat_remove_breakpoint (th->stop_bpstat, bpt); | |
7311 | return 0; | |
7312 | } | |
7313 | ||
53a5351d JM |
7314 | /* Delete a breakpoint and clean up all traces of it in the data |
7315 | structures. */ | |
c906108c SS |
7316 | |
7317 | void | |
fba45db2 | 7318 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 7319 | { |
52f0bd74 | 7320 | struct breakpoint *b; |
74960c60 | 7321 | struct bp_location *loc, *next; |
c906108c | 7322 | |
8a3fe4f8 | 7323 | gdb_assert (bpt != NULL); |
c906108c SS |
7324 | |
7325 | /* Has this bp already been deleted? This can happen because multiple | |
7326 | lists can hold pointers to bp's. bpstat lists are especial culprits. | |
7327 | ||
7328 | One example of this happening is a watchpoint's scope bp. When the | |
7329 | scope bp triggers, we notice that the watchpoint is out of scope, and | |
7330 | delete it. We also delete its scope bp. But the scope bp is marked | |
7331 | "auto-deleting", and is already on a bpstat. That bpstat is then | |
7332 | checked for auto-deleting bp's, which are deleted. | |
7333 | ||
7334 | A real solution to this problem might involve reference counts in bp's, | |
7335 | and/or giving them pointers back to their referencing bpstat's, and | |
7336 | teaching delete_breakpoint to only free a bp's storage when no more | |
1272ad14 | 7337 | references were extent. A cheaper bandaid was chosen. */ |
c906108c SS |
7338 | if (bpt->type == bp_none) |
7339 | return; | |
7340 | ||
383f836e | 7341 | observer_notify_breakpoint_deleted (bpt->number); |
c906108c | 7342 | |
c906108c SS |
7343 | if (breakpoint_chain == bpt) |
7344 | breakpoint_chain = bpt->next; | |
7345 | ||
c906108c SS |
7346 | ALL_BREAKPOINTS (b) |
7347 | if (b->next == bpt) | |
c5aa993b JM |
7348 | { |
7349 | b->next = bpt->next; | |
7350 | break; | |
7351 | } | |
c906108c | 7352 | |
c906108c | 7353 | free_command_lines (&bpt->commands); |
c906108c | 7354 | if (bpt->cond_string != NULL) |
b8c9b27d | 7355 | xfree (bpt->cond_string); |
c906108c | 7356 | if (bpt->addr_string != NULL) |
b8c9b27d | 7357 | xfree (bpt->addr_string); |
c906108c | 7358 | if (bpt->exp != NULL) |
b8c9b27d | 7359 | xfree (bpt->exp); |
c906108c | 7360 | if (bpt->exp_string != NULL) |
b8c9b27d | 7361 | xfree (bpt->exp_string); |
c906108c SS |
7362 | if (bpt->val != NULL) |
7363 | value_free (bpt->val); | |
7364 | if (bpt->source_file != NULL) | |
b8c9b27d | 7365 | xfree (bpt->source_file); |
c906108c | 7366 | if (bpt->dll_pathname != NULL) |
b8c9b27d | 7367 | xfree (bpt->dll_pathname); |
c906108c | 7368 | if (bpt->triggered_dll_pathname != NULL) |
b8c9b27d | 7369 | xfree (bpt->triggered_dll_pathname); |
c906108c | 7370 | if (bpt->exec_pathname != NULL) |
b8c9b27d | 7371 | xfree (bpt->exec_pathname); |
c906108c SS |
7372 | |
7373 | /* Be sure no bpstat's are pointing at it after it's been freed. */ | |
7374 | /* FIXME, how can we find all bpstat's? | |
198757a8 VP |
7375 | We just check stop_bpstat for now. Note that we cannot just |
7376 | remove bpstats pointing at bpt from the stop_bpstat list | |
7377 | entirely, as breakpoint commands are associated with the bpstat; | |
7378 | if we remove it here, then the later call to | |
7379 | bpstat_do_actions (&stop_bpstat); | |
7380 | in event-top.c won't do anything, and temporary breakpoints | |
7381 | with commands won't work. */ | |
a474d7c2 | 7382 | |
a474d7c2 | 7383 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); |
74960c60 VP |
7384 | |
7385 | /* Now that breakpoint is removed from breakpoint | |
7386 | list, update the global location list. This | |
7387 | will remove locations that used to belong to | |
7388 | this breakpoint. Do this before freeing | |
7389 | the breakpoint itself, since remove_breakpoint | |
7390 | looks at location's owner. It might be better | |
7391 | design to have location completely self-contained, | |
7392 | but it's not the case now. */ | |
b60e7edf | 7393 | update_global_location_list (0); |
74960c60 VP |
7394 | |
7395 | ||
c906108c SS |
7396 | /* On the chance that someone will soon try again to delete this same |
7397 | bp, we mark it as deleted before freeing its storage. */ | |
7398 | bpt->type = bp_none; | |
7399 | ||
b8c9b27d | 7400 | xfree (bpt); |
c906108c SS |
7401 | } |
7402 | ||
4d6140d9 AC |
7403 | static void |
7404 | do_delete_breakpoint_cleanup (void *b) | |
7405 | { | |
7406 | delete_breakpoint (b); | |
7407 | } | |
7408 | ||
7409 | struct cleanup * | |
7410 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
7411 | { | |
7412 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
7413 | } | |
7414 | ||
c906108c | 7415 | void |
fba45db2 | 7416 | delete_command (char *arg, int from_tty) |
c906108c SS |
7417 | { |
7418 | struct breakpoint *b, *temp; | |
7419 | ||
ea9365bb TT |
7420 | dont_repeat (); |
7421 | ||
c906108c SS |
7422 | if (arg == 0) |
7423 | { | |
7424 | int breaks_to_delete = 0; | |
7425 | ||
7426 | /* Delete all breakpoints if no argument. | |
c5aa993b JM |
7427 | Do not delete internal or call-dummy breakpoints, these |
7428 | have to be deleted with an explicit breakpoint number argument. */ | |
7429 | ALL_BREAKPOINTS (b) | |
7430 | { | |
7431 | if (b->type != bp_call_dummy && | |
7432 | b->type != bp_shlib_event && | |
c4093a6a | 7433 | b->type != bp_thread_event && |
1900040c | 7434 | b->type != bp_overlay_event && |
c5aa993b | 7435 | b->number >= 0) |
973d738b DJ |
7436 | { |
7437 | breaks_to_delete = 1; | |
7438 | break; | |
7439 | } | |
c5aa993b | 7440 | } |
c906108c SS |
7441 | |
7442 | /* Ask user only if there are some breakpoints to delete. */ | |
7443 | if (!from_tty | |
e2e0b3e5 | 7444 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 7445 | { |
c5aa993b JM |
7446 | ALL_BREAKPOINTS_SAFE (b, temp) |
7447 | { | |
7448 | if (b->type != bp_call_dummy && | |
7449 | b->type != bp_shlib_event && | |
c4093a6a | 7450 | b->type != bp_thread_event && |
1900040c | 7451 | b->type != bp_overlay_event && |
c5aa993b JM |
7452 | b->number >= 0) |
7453 | delete_breakpoint (b); | |
7454 | } | |
c906108c SS |
7455 | } |
7456 | } | |
7457 | else | |
7458 | map_breakpoint_numbers (arg, delete_breakpoint); | |
7459 | } | |
7460 | ||
0d381245 VP |
7461 | static int |
7462 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 7463 | { |
0d381245 VP |
7464 | for (; loc; loc = loc->next) |
7465 | if (!loc->shlib_disabled) | |
7466 | return 0; | |
7467 | return 1; | |
fe3f5fa8 VP |
7468 | } |
7469 | ||
776592bf DE |
7470 | /* Subroutine of update_breakpoint_locations to simplify it. |
7471 | Return non-zero if multiple fns in list LOC have the same name. | |
7472 | Null names are ignored. */ | |
7473 | ||
7474 | static int | |
7475 | ambiguous_names_p (struct bp_location *loc) | |
7476 | { | |
7477 | struct bp_location *l; | |
7478 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
7479 | (int (*) (const void *, const void *)) streq, | |
7480 | NULL, xcalloc, xfree); | |
7481 | ||
7482 | for (l = loc; l != NULL; l = l->next) | |
7483 | { | |
7484 | const char **slot; | |
7485 | const char *name = l->function_name; | |
7486 | ||
7487 | /* Allow for some names to be NULL, ignore them. */ | |
7488 | if (name == NULL) | |
7489 | continue; | |
7490 | ||
7491 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
7492 | INSERT); | |
7493 | /* NOTE: We can assume slot != NULL here because xcalloc never returns | |
7494 | NULL. */ | |
7495 | if (*slot != NULL) | |
7496 | { | |
7497 | htab_delete (htab); | |
7498 | return 1; | |
7499 | } | |
7500 | *slot = name; | |
7501 | } | |
7502 | ||
7503 | htab_delete (htab); | |
7504 | return 0; | |
7505 | } | |
7506 | ||
fe3f5fa8 | 7507 | static void |
0d381245 VP |
7508 | update_breakpoint_locations (struct breakpoint *b, |
7509 | struct symtabs_and_lines sals) | |
fe3f5fa8 VP |
7510 | { |
7511 | int i; | |
7512 | char *s; | |
0d381245 VP |
7513 | struct bp_location *existing_locations = b->loc; |
7514 | ||
7515 | /* If there's no new locations, and all existing locations | |
7516 | are pending, don't do anything. This optimizes | |
7517 | the common case where all locations are in the same | |
7518 | shared library, that was unloaded. We'd like to | |
7519 | retain the location, so that when the library | |
7520 | is loaded again, we don't loose the enabled/disabled | |
7521 | status of the individual locations. */ | |
7522 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) | |
fe3f5fa8 VP |
7523 | return; |
7524 | ||
fe3f5fa8 VP |
7525 | b->loc = NULL; |
7526 | ||
0d381245 | 7527 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 7528 | { |
0d381245 VP |
7529 | struct bp_location *new_loc = |
7530 | add_location_to_breakpoint (b, b->type, &(sals.sals[i])); | |
fe3f5fa8 | 7531 | |
0d381245 VP |
7532 | /* Reparse conditions, they might contain references to the |
7533 | old symtab. */ | |
7534 | if (b->cond_string != NULL) | |
7535 | { | |
7536 | struct gdb_exception e; | |
fe3f5fa8 | 7537 | |
0d381245 VP |
7538 | s = b->cond_string; |
7539 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
7540 | { | |
7541 | new_loc->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), | |
7542 | 0); | |
7543 | } | |
7544 | if (e.reason < 0) | |
7545 | { | |
7546 | warning (_("failed to reevaluate condition for breakpoint %d: %s"), | |
7547 | b->number, e.message); | |
7548 | new_loc->enabled = 0; | |
7549 | } | |
7550 | } | |
fe3f5fa8 | 7551 | |
0d381245 VP |
7552 | if (b->source_file != NULL) |
7553 | xfree (b->source_file); | |
7554 | if (sals.sals[i].symtab == NULL) | |
7555 | b->source_file = NULL; | |
7556 | else | |
7557 | b->source_file = | |
7558 | savestring (sals.sals[i].symtab->filename, | |
7559 | strlen (sals.sals[i].symtab->filename)); | |
fe3f5fa8 | 7560 | |
0d381245 VP |
7561 | if (b->line_number == 0) |
7562 | b->line_number = sals.sals[i].line; | |
7563 | } | |
fe3f5fa8 | 7564 | |
514f746b AR |
7565 | /* Update locations of permanent breakpoints. */ |
7566 | if (b->enable_state == bp_permanent) | |
7567 | make_breakpoint_permanent (b); | |
7568 | ||
0d381245 VP |
7569 | /* If possible, carry over 'disable' status from existing breakpoints. */ |
7570 | { | |
7571 | struct bp_location *e = existing_locations; | |
776592bf DE |
7572 | /* If there are multiple breakpoints with the same function name, |
7573 | e.g. for inline functions, comparing function names won't work. | |
7574 | Instead compare pc addresses; this is just a heuristic as things | |
7575 | may have moved, but in practice it gives the correct answer | |
7576 | often enough until a better solution is found. */ | |
7577 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
7578 | ||
0d381245 VP |
7579 | for (; e; e = e->next) |
7580 | { | |
7581 | if (!e->enabled && e->function_name) | |
7582 | { | |
7583 | struct bp_location *l = b->loc; | |
776592bf DE |
7584 | if (have_ambiguous_names) |
7585 | { | |
7586 | for (; l; l = l->next) | |
7587 | if (e->address == l->address) | |
7588 | { | |
7589 | l->enabled = 0; | |
7590 | break; | |
7591 | } | |
7592 | } | |
7593 | else | |
7594 | { | |
7595 | for (; l; l = l->next) | |
7596 | if (l->function_name | |
7597 | && strcmp (e->function_name, l->function_name) == 0) | |
7598 | { | |
7599 | l->enabled = 0; | |
7600 | break; | |
7601 | } | |
7602 | } | |
0d381245 VP |
7603 | } |
7604 | } | |
7605 | } | |
fe3f5fa8 | 7606 | |
b60e7edf | 7607 | update_global_location_list (1); |
fe3f5fa8 VP |
7608 | } |
7609 | ||
7610 | ||
c906108c SS |
7611 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
7612 | The value we return ends up being the return value from catch_errors. | |
7613 | Unused in this case. */ | |
7614 | ||
7615 | static int | |
4efb68b1 | 7616 | breakpoint_re_set_one (void *bint) |
c906108c | 7617 | { |
53a5351d JM |
7618 | /* get past catch_errs */ |
7619 | struct breakpoint *b = (struct breakpoint *) bint; | |
c906108c SS |
7620 | struct value *mark; |
7621 | int i; | |
fe3f5fa8 VP |
7622 | int not_found = 0; |
7623 | int *not_found_ptr = ¬_found; | |
7624 | struct symtabs_and_lines sals = {}; | |
ed0616c6 | 7625 | struct symtabs_and_lines expanded; |
c906108c | 7626 | char *s; |
b5de0fa7 | 7627 | enum enable_state save_enable; |
fe3f5fa8 VP |
7628 | struct gdb_exception e; |
7629 | ||
c906108c SS |
7630 | |
7631 | switch (b->type) | |
7632 | { | |
7633 | case bp_none: | |
8a3fe4f8 | 7634 | warning (_("attempted to reset apparently deleted breakpoint #%d?"), |
53a5351d | 7635 | b->number); |
c906108c SS |
7636 | return 0; |
7637 | case bp_breakpoint: | |
7638 | case bp_hardware_breakpoint: | |
7639 | case bp_catch_load: | |
7640 | case bp_catch_unload: | |
7641 | if (b->addr_string == NULL) | |
7642 | { | |
7643 | /* Anything without a string can't be re-set. */ | |
7644 | delete_breakpoint (b); | |
7645 | return 0; | |
7646 | } | |
c906108c SS |
7647 | |
7648 | set_language (b->language); | |
7649 | input_radix = b->input_radix; | |
7650 | s = b->addr_string; | |
fe3f5fa8 | 7651 | TRY_CATCH (e, RETURN_MASK_ERROR) |
c906108c | 7652 | { |
fe3f5fa8 VP |
7653 | sals = decode_line_1 (&s, 1, (struct symtab *) NULL, 0, (char ***) NULL, |
7654 | not_found_ptr); | |
7655 | } | |
7656 | if (e.reason < 0) | |
7657 | { | |
7658 | int not_found_and_ok = 0; | |
7659 | /* For pending breakpoints, it's expected that parsing | |
7660 | will fail until the right shared library is loaded. | |
7661 | User has already told to create pending breakpoints and | |
7662 | don't need extra messages. If breakpoint is in bp_shlib_disabled | |
7663 | state, then user already saw the message about that breakpoint | |
7664 | being disabled, and don't want to see more errors. */ | |
0d381245 VP |
7665 | if (not_found |
7666 | && (b->condition_not_parsed | |
7667 | || (b->loc && b->loc->shlib_disabled) | |
7668 | || b->enable_state == bp_disabled)) | |
fe3f5fa8 VP |
7669 | not_found_and_ok = 1; |
7670 | ||
7671 | if (!not_found_and_ok) | |
c906108c | 7672 | { |
fe3f5fa8 VP |
7673 | /* We surely don't want to warn about the same breakpoint |
7674 | 10 times. One solution, implemented here, is disable | |
7675 | the breakpoint on error. Another solution would be to | |
7676 | have separate 'warning emitted' flag. Since this | |
7677 | happens only when a binary has changed, I don't know | |
7678 | which approach is better. */ | |
7679 | b->enable_state = bp_disabled; | |
7680 | throw_exception (e); | |
c906108c | 7681 | } |
fe3f5fa8 | 7682 | } |
c906108c | 7683 | |
fe3f5fa8 VP |
7684 | if (not_found) |
7685 | break; | |
7686 | ||
7687 | gdb_assert (sals.nelts == 1); | |
7688 | resolve_sal_pc (&sals.sals[0]); | |
0d381245 | 7689 | if (b->condition_not_parsed && s && s[0]) |
fe3f5fa8 VP |
7690 | { |
7691 | char *cond_string = 0; | |
7692 | int thread = -1; | |
7693 | find_condition_and_thread (s, sals.sals[0].pc, | |
7694 | &cond_string, &thread); | |
7695 | if (cond_string) | |
7696 | b->cond_string = cond_string; | |
7697 | b->thread = thread; | |
0d381245 | 7698 | b->condition_not_parsed = 0; |
fe3f5fa8 | 7699 | } |
ed0616c6 VP |
7700 | expanded = expand_line_sal_maybe (sals.sals[0]); |
7701 | update_breakpoint_locations (b, expanded); | |
0d381245 | 7702 | |
b8c9b27d | 7703 | xfree (sals.sals); |
c906108c SS |
7704 | break; |
7705 | ||
7706 | case bp_watchpoint: | |
7707 | case bp_hardware_watchpoint: | |
7708 | case bp_read_watchpoint: | |
7709 | case bp_access_watchpoint: | |
0b3de036 VP |
7710 | /* Watchpoint can be either on expression using entirely global variables, |
7711 | or it can be on local variables. | |
7712 | ||
7713 | Watchpoints of the first kind are never auto-deleted, and even persist | |
7714 | across program restarts. Since they can use variables from shared | |
7715 | libraries, we need to reparse expression as libraries are loaded | |
7716 | and unloaded. | |
7717 | ||
7718 | Watchpoints on local variables can also change meaning as result | |
7719 | of solib event. For example, if a watchpoint uses both a local and | |
7720 | a global variables in expression, it's a local watchpoint, but | |
7721 | unloading of a shared library will make the expression invalid. | |
7722 | This is not a very common use case, but we still re-evaluate | |
7723 | expression, to avoid surprises to the user. | |
7724 | ||
7725 | Note that for local watchpoints, we re-evaluate it only if | |
7726 | watchpoints frame id is still valid. If it's not, it means | |
7727 | the watchpoint is out of scope and will be deleted soon. In fact, | |
7728 | I'm not sure we'll ever be called in this case. | |
7729 | ||
7730 | If a local watchpoint's frame id is still valid, then | |
7731 | b->exp_valid_block is likewise valid, and we can safely use it. | |
7732 | ||
7733 | Don't do anything about disabled watchpoints, since they will | |
7734 | be reevaluated again when enabled. */ | |
a5606eee | 7735 | update_watchpoint (b, 1 /* reparse */); |
c906108c | 7736 | break; |
c5aa993b JM |
7737 | /* We needn't really do anything to reset these, since the mask |
7738 | that requests them is unaffected by e.g., new libraries being | |
7739 | loaded. */ | |
ce78b96d | 7740 | case bp_catchpoint: |
c906108c | 7741 | break; |
c5aa993b | 7742 | |
c906108c | 7743 | default: |
a3f17187 | 7744 | printf_filtered (_("Deleting unknown breakpoint type %d\n"), b->type); |
c906108c | 7745 | /* fall through */ |
611c83ae PA |
7746 | /* Delete overlay event breakpoints; they will be reset later by |
7747 | breakpoint_re_set. */ | |
1900040c | 7748 | case bp_overlay_event: |
c906108c SS |
7749 | delete_breakpoint (b); |
7750 | break; | |
7751 | ||
c5aa993b JM |
7752 | /* This breakpoint is special, it's set up when the inferior |
7753 | starts and we really don't want to touch it. */ | |
c906108c SS |
7754 | case bp_shlib_event: |
7755 | ||
c4093a6a JM |
7756 | /* Like bp_shlib_event, this breakpoint type is special. |
7757 | Once it is set up, we do not want to touch it. */ | |
7758 | case bp_thread_event: | |
7759 | ||
c5aa993b JM |
7760 | /* Keep temporary breakpoints, which can be encountered when we step |
7761 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
7762 | Otherwise these should have been blown away via the cleanup chain | |
7763 | or by breakpoint_init_inferior when we rerun the executable. */ | |
c906108c SS |
7764 | case bp_until: |
7765 | case bp_finish: | |
7766 | case bp_watchpoint_scope: | |
7767 | case bp_call_dummy: | |
7768 | case bp_step_resume: | |
611c83ae PA |
7769 | case bp_longjmp: |
7770 | case bp_longjmp_resume: | |
c906108c SS |
7771 | break; |
7772 | } | |
7773 | ||
7774 | return 0; | |
7775 | } | |
7776 | ||
7777 | /* Re-set all breakpoints after symbols have been re-loaded. */ | |
7778 | void | |
fba45db2 | 7779 | breakpoint_re_set (void) |
c906108c SS |
7780 | { |
7781 | struct breakpoint *b, *temp; | |
7782 | enum language save_language; | |
7783 | int save_input_radix; | |
c5aa993b | 7784 | |
c906108c SS |
7785 | save_language = current_language->la_language; |
7786 | save_input_radix = input_radix; | |
7787 | ALL_BREAKPOINTS_SAFE (b, temp) | |
c5aa993b | 7788 | { |
53a5351d | 7789 | /* Format possible error msg */ |
fe3f5fa8 | 7790 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
7791 | b->number); |
7792 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 7793 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 7794 | do_cleanups (cleanups); |
c5aa993b | 7795 | } |
c906108c SS |
7796 | set_language (save_language); |
7797 | input_radix = save_input_radix; | |
1900040c MS |
7798 | |
7799 | create_overlay_event_breakpoint ("_ovly_debug_event"); | |
c906108c SS |
7800 | } |
7801 | \f | |
c906108c SS |
7802 | /* Reset the thread number of this breakpoint: |
7803 | ||
7804 | - If the breakpoint is for all threads, leave it as-is. | |
39f77062 | 7805 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 7806 | void |
fba45db2 | 7807 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
7808 | { |
7809 | if (b->thread != -1) | |
7810 | { | |
39f77062 KB |
7811 | if (in_thread_list (inferior_ptid)) |
7812 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c SS |
7813 | } |
7814 | } | |
7815 | ||
03ac34d5 MS |
7816 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7817 | If from_tty is nonzero, it prints a message to that effect, | |
7818 | which ends with a period (no newline). */ | |
7819 | ||
c906108c | 7820 | void |
fba45db2 | 7821 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 7822 | { |
52f0bd74 | 7823 | struct breakpoint *b; |
c906108c SS |
7824 | |
7825 | if (count < 0) | |
7826 | count = 0; | |
7827 | ||
7828 | ALL_BREAKPOINTS (b) | |
7829 | if (b->number == bptnum) | |
c5aa993b JM |
7830 | { |
7831 | b->ignore_count = count; | |
221ea385 KS |
7832 | if (from_tty) |
7833 | { | |
7834 | if (count == 0) | |
a3f17187 | 7835 | printf_filtered (_("Will stop next time breakpoint %d is reached."), |
221ea385 KS |
7836 | bptnum); |
7837 | else if (count == 1) | |
a3f17187 | 7838 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
7839 | bptnum); |
7840 | else | |
a3f17187 | 7841 | printf_filtered (_("Will ignore next %d crossings of breakpoint %d."), |
221ea385 KS |
7842 | count, bptnum); |
7843 | } | |
c5aa993b | 7844 | breakpoints_changed (); |
383f836e | 7845 | observer_notify_breakpoint_modified (b->number); |
c5aa993b JM |
7846 | return; |
7847 | } | |
c906108c | 7848 | |
8a3fe4f8 | 7849 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
7850 | } |
7851 | ||
b2175913 MS |
7852 | void |
7853 | make_breakpoint_silent (struct breakpoint *b) | |
7854 | { | |
7855 | /* Silence the breakpoint. */ | |
7856 | b->silent = 1; | |
7857 | } | |
7858 | ||
c906108c SS |
7859 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
7860 | ||
7861 | static void | |
fba45db2 | 7862 | ignore_command (char *args, int from_tty) |
c906108c SS |
7863 | { |
7864 | char *p = args; | |
52f0bd74 | 7865 | int num; |
c906108c SS |
7866 | |
7867 | if (p == 0) | |
e2e0b3e5 | 7868 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 7869 | |
c906108c | 7870 | num = get_number (&p); |
5c44784c | 7871 | if (num == 0) |
8a3fe4f8 | 7872 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 7873 | if (*p == 0) |
8a3fe4f8 | 7874 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
7875 | |
7876 | set_ignore_count (num, | |
7877 | longest_to_int (value_as_long (parse_and_eval (p))), | |
7878 | from_tty); | |
221ea385 KS |
7879 | if (from_tty) |
7880 | printf_filtered ("\n"); | |
c906108c SS |
7881 | } |
7882 | \f | |
7883 | /* Call FUNCTION on each of the breakpoints | |
7884 | whose numbers are given in ARGS. */ | |
7885 | ||
7886 | static void | |
831662b3 | 7887 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *)) |
c906108c | 7888 | { |
52f0bd74 | 7889 | char *p = args; |
c906108c | 7890 | char *p1; |
52f0bd74 AC |
7891 | int num; |
7892 | struct breakpoint *b, *tmp; | |
11cf8741 | 7893 | int match; |
c906108c SS |
7894 | |
7895 | if (p == 0) | |
e2e0b3e5 | 7896 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c SS |
7897 | |
7898 | while (*p) | |
7899 | { | |
11cf8741 | 7900 | match = 0; |
c906108c | 7901 | p1 = p; |
c5aa993b | 7902 | |
5c44784c JM |
7903 | num = get_number_or_range (&p1); |
7904 | if (num == 0) | |
c5aa993b | 7905 | { |
8a3fe4f8 | 7906 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
7907 | } |
7908 | else | |
7909 | { | |
7910 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
7911 | if (b->number == num) | |
7912 | { | |
7913 | struct breakpoint *related_breakpoint = b->related_breakpoint; | |
11cf8741 | 7914 | match = 1; |
5c44784c JM |
7915 | function (b); |
7916 | if (related_breakpoint) | |
7917 | function (related_breakpoint); | |
11cf8741 | 7918 | break; |
5c44784c | 7919 | } |
11cf8741 | 7920 | if (match == 0) |
a3f17187 | 7921 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 7922 | } |
c906108c SS |
7923 | p = p1; |
7924 | } | |
7925 | } | |
7926 | ||
0d381245 VP |
7927 | static struct bp_location * |
7928 | find_location_by_number (char *number) | |
7929 | { | |
7930 | char *dot = strchr (number, '.'); | |
7931 | char *p1; | |
7932 | int bp_num; | |
7933 | int loc_num; | |
7934 | struct breakpoint *b; | |
7935 | struct bp_location *loc; | |
7936 | ||
7937 | *dot = '\0'; | |
7938 | ||
7939 | p1 = number; | |
7940 | bp_num = get_number_or_range (&p1); | |
7941 | if (bp_num == 0) | |
7942 | error (_("Bad breakpoint number '%s'"), number); | |
7943 | ||
7944 | ALL_BREAKPOINTS (b) | |
7945 | if (b->number == bp_num) | |
7946 | { | |
7947 | break; | |
7948 | } | |
7949 | ||
7950 | if (!b || b->number != bp_num) | |
7951 | error (_("Bad breakpoint number '%s'"), number); | |
7952 | ||
7953 | p1 = dot+1; | |
7954 | loc_num = get_number_or_range (&p1); | |
7955 | if (loc_num == 0) | |
7956 | error (_("Bad breakpoint location number '%s'"), number); | |
7957 | ||
7958 | --loc_num; | |
7959 | loc = b->loc; | |
7960 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
7961 | ; | |
7962 | if (!loc) | |
7963 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
7964 | ||
7965 | return loc; | |
7966 | } | |
7967 | ||
7968 | ||
1900040c MS |
7969 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
7970 | If from_tty is nonzero, it prints a message to that effect, | |
7971 | which ends with a period (no newline). */ | |
7972 | ||
c906108c | 7973 | void |
fba45db2 | 7974 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
7975 | { |
7976 | /* Never disable a watchpoint scope breakpoint; we want to | |
7977 | hit them when we leave scope so we can delete both the | |
7978 | watchpoint and its scope breakpoint at that time. */ | |
7979 | if (bpt->type == bp_watchpoint_scope) | |
7980 | return; | |
7981 | ||
c2c6d25f | 7982 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 7983 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
7984 | return; |
7985 | ||
b5de0fa7 | 7986 | bpt->enable_state = bp_disabled; |
c906108c | 7987 | |
b60e7edf | 7988 | update_global_location_list (0); |
c906108c | 7989 | |
383f836e | 7990 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
7991 | } |
7992 | ||
c906108c | 7993 | static void |
fba45db2 | 7994 | disable_command (char *args, int from_tty) |
c906108c | 7995 | { |
52f0bd74 | 7996 | struct breakpoint *bpt; |
c906108c SS |
7997 | if (args == 0) |
7998 | ALL_BREAKPOINTS (bpt) | |
7999 | switch (bpt->type) | |
c5aa993b JM |
8000 | { |
8001 | case bp_none: | |
8a3fe4f8 | 8002 | warning (_("attempted to disable apparently deleted breakpoint #%d?"), |
53a5351d | 8003 | bpt->number); |
c5aa993b JM |
8004 | continue; |
8005 | case bp_breakpoint: | |
ce78b96d | 8006 | case bp_catchpoint: |
c5aa993b JM |
8007 | case bp_catch_load: |
8008 | case bp_catch_unload: | |
c5aa993b JM |
8009 | case bp_hardware_breakpoint: |
8010 | case bp_watchpoint: | |
8011 | case bp_hardware_watchpoint: | |
8012 | case bp_read_watchpoint: | |
8013 | case bp_access_watchpoint: | |
8014 | disable_breakpoint (bpt); | |
8015 | default: | |
8016 | continue; | |
8017 | } | |
0d381245 VP |
8018 | else if (strchr (args, '.')) |
8019 | { | |
8020 | struct bp_location *loc = find_location_by_number (args); | |
8021 | if (loc) | |
8022 | loc->enabled = 0; | |
b60e7edf | 8023 | update_global_location_list (0); |
0d381245 | 8024 | } |
c906108c SS |
8025 | else |
8026 | map_breakpoint_numbers (args, disable_breakpoint); | |
8027 | } | |
8028 | ||
8029 | static void | |
fba45db2 | 8030 | do_enable_breakpoint (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 8031 | { |
c906108c SS |
8032 | int target_resources_ok, other_type_used; |
8033 | struct value *mark; | |
8034 | ||
8035 | if (bpt->type == bp_hardware_breakpoint) | |
8036 | { | |
8037 | int i; | |
c5aa993b | 8038 | i = hw_breakpoint_used_count (); |
53a5351d JM |
8039 | target_resources_ok = |
8040 | TARGET_CAN_USE_HARDWARE_WATCHPOINT (bp_hardware_breakpoint, | |
8041 | i + 1, 0); | |
c906108c | 8042 | if (target_resources_ok == 0) |
8a3fe4f8 | 8043 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 8044 | else if (target_resources_ok < 0) |
8a3fe4f8 | 8045 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
8046 | } |
8047 | ||
fe3f5fa8 VP |
8048 | if (bpt->type == bp_watchpoint || |
8049 | bpt->type == bp_hardware_watchpoint || | |
8050 | bpt->type == bp_read_watchpoint || | |
8051 | bpt->type == bp_access_watchpoint) | |
c906108c | 8052 | { |
fe3f5fa8 VP |
8053 | struct frame_id saved_frame_id; |
8054 | ||
8055 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
8056 | if (bpt->exp_valid_block != NULL) | |
c906108c | 8057 | { |
fe3f5fa8 VP |
8058 | struct frame_info *fr = |
8059 | fr = frame_find_by_id (bpt->watchpoint_frame); | |
8060 | if (fr == NULL) | |
c906108c | 8061 | { |
fe3f5fa8 VP |
8062 | printf_filtered (_("\ |
8063 | Cannot enable watchpoint %d because the block in which its expression\n\ | |
8064 | is valid is not currently in scope.\n"), bpt->number); | |
c906108c SS |
8065 | return; |
8066 | } | |
fe3f5fa8 | 8067 | select_frame (fr); |
c906108c | 8068 | } |
0101ce28 | 8069 | |
b4c291bb KH |
8070 | if (bpt->val) |
8071 | value_free (bpt->val); | |
fe3f5fa8 | 8072 | mark = value_mark (); |
fa4727a6 DJ |
8073 | fetch_watchpoint_value (bpt->exp, &bpt->val, NULL, NULL); |
8074 | if (bpt->val) | |
8075 | release_value (bpt->val); | |
8076 | bpt->val_valid = 1; | |
8077 | ||
fe3f5fa8 VP |
8078 | if (bpt->type == bp_hardware_watchpoint || |
8079 | bpt->type == bp_read_watchpoint || | |
c5aa993b JM |
8080 | bpt->type == bp_access_watchpoint) |
8081 | { | |
fe3f5fa8 VP |
8082 | int i = hw_watchpoint_used_count (bpt->type, &other_type_used); |
8083 | int mem_cnt = can_use_hardware_watchpoint (bpt->val); | |
0101ce28 | 8084 | |
fe3f5fa8 VP |
8085 | /* Hack around 'unused var' error for some targets here */ |
8086 | (void) mem_cnt, (void) i; | |
8087 | target_resources_ok = TARGET_CAN_USE_HARDWARE_WATCHPOINT ( | |
8088 | bpt->type, i + mem_cnt, other_type_used); | |
8089 | /* we can consider of type is bp_hardware_watchpoint, convert to | |
8090 | bp_watchpoint in the following condition */ | |
8091 | if (target_resources_ok < 0) | |
c5aa993b | 8092 | { |
fe3f5fa8 | 8093 | printf_filtered (_("\ |
c906108c | 8094 | Cannot enable watchpoint %d because target watch resources\n\ |
a3f17187 | 8095 | have been allocated for other watchpoints.\n"), bpt->number); |
fe3f5fa8 VP |
8096 | value_free_to_mark (mark); |
8097 | return; | |
c5aa993b JM |
8098 | } |
8099 | } | |
fe3f5fa8 VP |
8100 | |
8101 | select_frame (frame_find_by_id (saved_frame_id)); | |
8102 | value_free_to_mark (mark); | |
c906108c | 8103 | } |
0101ce28 | 8104 | |
b4c291bb KH |
8105 | if (bpt->enable_state != bp_permanent) |
8106 | bpt->enable_state = bp_enabled; | |
8107 | bpt->disposition = disposition; | |
b60e7edf | 8108 | update_global_location_list (1); |
b4c291bb KH |
8109 | breakpoints_changed (); |
8110 | ||
383f836e | 8111 | observer_notify_breakpoint_modified (bpt->number); |
c906108c SS |
8112 | } |
8113 | ||
fe3f5fa8 | 8114 | |
c906108c | 8115 | void |
fba45db2 | 8116 | enable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
8117 | { |
8118 | do_enable_breakpoint (bpt, bpt->disposition); | |
8119 | } | |
8120 | ||
8121 | /* The enable command enables the specified breakpoints (or all defined | |
8122 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 8123 | in stopping the inferior. */ |
c906108c | 8124 | |
c906108c | 8125 | static void |
fba45db2 | 8126 | enable_command (char *args, int from_tty) |
c906108c | 8127 | { |
52f0bd74 | 8128 | struct breakpoint *bpt; |
c906108c SS |
8129 | if (args == 0) |
8130 | ALL_BREAKPOINTS (bpt) | |
8131 | switch (bpt->type) | |
c5aa993b JM |
8132 | { |
8133 | case bp_none: | |
8a3fe4f8 | 8134 | warning (_("attempted to enable apparently deleted breakpoint #%d?"), |
53a5351d | 8135 | bpt->number); |
c5aa993b JM |
8136 | continue; |
8137 | case bp_breakpoint: | |
ce78b96d | 8138 | case bp_catchpoint: |
c5aa993b JM |
8139 | case bp_catch_load: |
8140 | case bp_catch_unload: | |
c5aa993b JM |
8141 | case bp_hardware_breakpoint: |
8142 | case bp_watchpoint: | |
8143 | case bp_hardware_watchpoint: | |
8144 | case bp_read_watchpoint: | |
8145 | case bp_access_watchpoint: | |
8146 | enable_breakpoint (bpt); | |
8147 | default: | |
8148 | continue; | |
8149 | } | |
0d381245 VP |
8150 | else if (strchr (args, '.')) |
8151 | { | |
8152 | struct bp_location *loc = find_location_by_number (args); | |
8153 | if (loc) | |
8154 | loc->enabled = 1; | |
b60e7edf | 8155 | update_global_location_list (1); |
0d381245 | 8156 | } |
c906108c SS |
8157 | else |
8158 | map_breakpoint_numbers (args, enable_breakpoint); | |
8159 | } | |
8160 | ||
8161 | static void | |
fba45db2 | 8162 | enable_once_breakpoint (struct breakpoint *bpt) |
c906108c | 8163 | { |
b5de0fa7 | 8164 | do_enable_breakpoint (bpt, disp_disable); |
c906108c SS |
8165 | } |
8166 | ||
c906108c | 8167 | static void |
fba45db2 | 8168 | enable_once_command (char *args, int from_tty) |
c906108c SS |
8169 | { |
8170 | map_breakpoint_numbers (args, enable_once_breakpoint); | |
8171 | } | |
8172 | ||
8173 | static void | |
fba45db2 | 8174 | enable_delete_breakpoint (struct breakpoint *bpt) |
c906108c | 8175 | { |
b5de0fa7 | 8176 | do_enable_breakpoint (bpt, disp_del); |
c906108c SS |
8177 | } |
8178 | ||
c906108c | 8179 | static void |
fba45db2 | 8180 | enable_delete_command (char *args, int from_tty) |
c906108c SS |
8181 | { |
8182 | map_breakpoint_numbers (args, enable_delete_breakpoint); | |
8183 | } | |
8184 | \f | |
fa8d40ab JJ |
8185 | static void |
8186 | set_breakpoint_cmd (char *args, int from_tty) | |
8187 | { | |
8188 | } | |
8189 | ||
8190 | static void | |
8191 | show_breakpoint_cmd (char *args, int from_tty) | |
8192 | { | |
8193 | } | |
8194 | ||
c906108c SS |
8195 | /* Use default_breakpoint_'s, or nothing if they aren't valid. */ |
8196 | ||
8197 | struct symtabs_and_lines | |
fba45db2 | 8198 | decode_line_spec_1 (char *string, int funfirstline) |
c906108c SS |
8199 | { |
8200 | struct symtabs_and_lines sals; | |
8201 | if (string == 0) | |
8a3fe4f8 | 8202 | error (_("Empty line specification.")); |
c906108c SS |
8203 | if (default_breakpoint_valid) |
8204 | sals = decode_line_1 (&string, funfirstline, | |
53a5351d JM |
8205 | default_breakpoint_symtab, |
8206 | default_breakpoint_line, | |
68219205 | 8207 | (char ***) NULL, NULL); |
c906108c SS |
8208 | else |
8209 | sals = decode_line_1 (&string, funfirstline, | |
68219205 | 8210 | (struct symtab *) NULL, 0, (char ***) NULL, NULL); |
c906108c | 8211 | if (*string) |
8a3fe4f8 | 8212 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
8213 | return sals; |
8214 | } | |
8181d85f DJ |
8215 | |
8216 | /* Create and insert a raw software breakpoint at PC. Return an | |
8217 | identifier, which should be used to remove the breakpoint later. | |
8218 | In general, places which call this should be using something on the | |
8219 | breakpoint chain instead; this function should be eliminated | |
8220 | someday. */ | |
8221 | ||
8222 | void * | |
8223 | deprecated_insert_raw_breakpoint (CORE_ADDR pc) | |
8224 | { | |
8225 | struct bp_target_info *bp_tgt; | |
8226 | ||
8227 | bp_tgt = xmalloc (sizeof (struct bp_target_info)); | |
8228 | memset (bp_tgt, 0, sizeof (struct bp_target_info)); | |
8229 | ||
8230 | bp_tgt->placed_address = pc; | |
8231 | if (target_insert_breakpoint (bp_tgt) != 0) | |
8232 | { | |
8233 | /* Could not insert the breakpoint. */ | |
8234 | xfree (bp_tgt); | |
8235 | return NULL; | |
8236 | } | |
8237 | ||
8238 | return bp_tgt; | |
8239 | } | |
8240 | ||
8241 | /* Remove a breakpoint BP inserted by deprecated_insert_raw_breakpoint. */ | |
8242 | ||
8243 | int | |
8244 | deprecated_remove_raw_breakpoint (void *bp) | |
8245 | { | |
8246 | struct bp_target_info *bp_tgt = bp; | |
8247 | int ret; | |
8248 | ||
8249 | ret = target_remove_breakpoint (bp_tgt); | |
8250 | xfree (bp_tgt); | |
8251 | ||
8252 | return ret; | |
8253 | } | |
8254 | ||
8255 | /* One (or perhaps two) breakpoints used for software single stepping. */ | |
8256 | ||
8257 | static void *single_step_breakpoints[2]; | |
8258 | ||
8259 | /* Create and insert a breakpoint for software single step. */ | |
8260 | ||
8261 | void | |
8262 | insert_single_step_breakpoint (CORE_ADDR next_pc) | |
8263 | { | |
8264 | void **bpt_p; | |
8265 | ||
8266 | if (single_step_breakpoints[0] == NULL) | |
8267 | bpt_p = &single_step_breakpoints[0]; | |
8268 | else | |
8269 | { | |
8270 | gdb_assert (single_step_breakpoints[1] == NULL); | |
8271 | bpt_p = &single_step_breakpoints[1]; | |
8272 | } | |
8273 | ||
8274 | /* NOTE drow/2006-04-11: A future improvement to this function would be | |
8275 | to only create the breakpoints once, and actually put them on the | |
8276 | breakpoint chain. That would let us use set_raw_breakpoint. We could | |
8277 | adjust the addresses each time they were needed. Doing this requires | |
8278 | corresponding changes elsewhere where single step breakpoints are | |
8279 | handled, however. So, for now, we use this. */ | |
8280 | ||
8281 | *bpt_p = deprecated_insert_raw_breakpoint (next_pc); | |
8282 | if (*bpt_p == NULL) | |
1893a4c0 | 8283 | error (_("Could not insert single-step breakpoint at 0x%s"), |
8181d85f DJ |
8284 | paddr_nz (next_pc)); |
8285 | } | |
8286 | ||
8287 | /* Remove and delete any breakpoints used for software single step. */ | |
8288 | ||
8289 | void | |
8290 | remove_single_step_breakpoints (void) | |
8291 | { | |
8292 | gdb_assert (single_step_breakpoints[0] != NULL); | |
8293 | ||
8294 | /* See insert_single_step_breakpoint for more about this deprecated | |
8295 | call. */ | |
8296 | deprecated_remove_raw_breakpoint (single_step_breakpoints[0]); | |
8297 | single_step_breakpoints[0] = NULL; | |
8298 | ||
8299 | if (single_step_breakpoints[1] != NULL) | |
8300 | { | |
8301 | deprecated_remove_raw_breakpoint (single_step_breakpoints[1]); | |
8302 | single_step_breakpoints[1] = NULL; | |
8303 | } | |
8304 | } | |
8305 | ||
1aafd4da UW |
8306 | /* Check whether a software single-step breakpoint is inserted at PC. */ |
8307 | ||
8308 | static int | |
8309 | single_step_breakpoint_inserted_here_p (CORE_ADDR pc) | |
8310 | { | |
8311 | int i; | |
8312 | ||
8313 | for (i = 0; i < 2; i++) | |
8314 | { | |
8315 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
8316 | if (bp_tgt && bp_tgt->placed_address == pc) | |
8317 | return 1; | |
8318 | } | |
8319 | ||
8320 | return 0; | |
8321 | } | |
8322 | ||
c906108c | 8323 | \f |
31e2b00f AS |
8324 | /* This help string is used for the break, hbreak, tbreak and thbreak commands. |
8325 | It is defined as a macro to prevent duplication. | |
8326 | COMMAND should be a string constant containing the name of the command. */ | |
8327 | #define BREAK_ARGS_HELP(command) \ | |
8328 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
8329 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
8330 | If a line number is specified, break at start of code for that line.\n\ | |
8331 | If a function is specified, break at start of code for that function.\n\ | |
8332 | If an address is specified, break at that exact address.\n\ | |
8333 | With no LOCATION, uses current execution address of selected stack frame.\n\ | |
8334 | This is useful for breaking on return to a stack frame.\n\ | |
8335 | \n\ | |
8336 | THREADNUM is the number from \"info threads\".\n\ | |
8337 | CONDITION is a boolean expression.\n\ | |
8338 | \n\ | |
8339 | Multiple breakpoints at one place are permitted, and useful if conditional.\n\ | |
8340 | \n\ | |
8341 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
8342 | ||
44feb3ce TT |
8343 | /* List of subcommands for "catch". */ |
8344 | static struct cmd_list_element *catch_cmdlist; | |
8345 | ||
8346 | /* List of subcommands for "tcatch". */ | |
8347 | static struct cmd_list_element *tcatch_cmdlist; | |
8348 | ||
8349 | /* Like add_cmd, but add the command to both the "catch" and "tcatch" | |
8350 | lists, and pass some additional user data to the command function. */ | |
8351 | static void | |
8352 | add_catch_command (char *name, char *docstring, | |
8353 | void (*sfunc) (char *args, int from_tty, | |
8354 | struct cmd_list_element *command), | |
8355 | void *user_data_catch, | |
8356 | void *user_data_tcatch) | |
8357 | { | |
8358 | struct cmd_list_element *command; | |
8359 | ||
8360 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
8361 | &catch_cmdlist); | |
8362 | set_cmd_sfunc (command, sfunc); | |
8363 | set_cmd_context (command, user_data_catch); | |
8364 | ||
8365 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
8366 | &tcatch_cmdlist); | |
8367 | set_cmd_sfunc (command, sfunc); | |
8368 | set_cmd_context (command, user_data_tcatch); | |
8369 | } | |
8370 | ||
c906108c | 8371 | void |
fba45db2 | 8372 | _initialize_breakpoint (void) |
c906108c | 8373 | { |
fa8d40ab JJ |
8374 | static struct cmd_list_element *breakpoint_set_cmdlist; |
8375 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
c906108c SS |
8376 | struct cmd_list_element *c; |
8377 | ||
84acb35a | 8378 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
84acb35a | 8379 | |
c906108c SS |
8380 | breakpoint_chain = 0; |
8381 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
8382 | before a breakpoint is set. */ | |
8383 | breakpoint_count = 0; | |
8384 | ||
1bedd215 AC |
8385 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
8386 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
8387 | Usage is `ignore N COUNT'.")); | |
c906108c | 8388 | if (xdb_commands) |
c5aa993b | 8389 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 8390 | |
1bedd215 AC |
8391 | add_com ("commands", class_breakpoint, commands_command, _("\ |
8392 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
8393 | Give breakpoint number as argument after \"commands\".\n\ |
8394 | With no argument, the targeted breakpoint is the last one set.\n\ | |
8395 | The commands themselves follow starting on the next line.\n\ | |
8396 | Type a line containing \"end\" to indicate the end of them.\n\ | |
8397 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 8398 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 8399 | |
1bedd215 AC |
8400 | add_com ("condition", class_breakpoint, condition_command, _("\ |
8401 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 8402 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 8403 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 8404 | |
1bedd215 | 8405 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 8406 | Set a temporary breakpoint.\n\ |
c906108c SS |
8407 | Like \"break\" except the breakpoint is only temporary,\n\ |
8408 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
8409 | by using \"enable delete\" on the breakpoint number.\n\ |
8410 | \n" | |
8411 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 8412 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 8413 | |
1bedd215 | 8414 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
31e2b00f | 8415 | Set a hardware assisted breakpoint.\n\ |
c906108c | 8416 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
8417 | some target hardware may not have this support.\n\ |
8418 | \n" | |
8419 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 8420 | set_cmd_completer (c, location_completer); |
c906108c | 8421 | |
1bedd215 | 8422 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 8423 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 8424 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
8425 | so it will be deleted when hit.\n\ |
8426 | \n" | |
8427 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 8428 | set_cmd_completer (c, location_completer); |
c906108c | 8429 | |
1bedd215 AC |
8430 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
8431 | Enable some breakpoints.\n\ | |
c906108c SS |
8432 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8433 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8434 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8435 | With a subcommand you can enable temporarily."), |
c906108c SS |
8436 | &enablelist, "enable ", 1, &cmdlist); |
8437 | if (xdb_commands) | |
1bedd215 AC |
8438 | add_com ("ab", class_breakpoint, enable_command, _("\ |
8439 | Enable some breakpoints.\n\ | |
c906108c SS |
8440 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8441 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
8442 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8443 | With a subcommand you can enable temporarily.")); |
c906108c SS |
8444 | |
8445 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
8446 | ||
1bedd215 AC |
8447 | add_abbrev_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
8448 | Enable some breakpoints.\n\ | |
c906108c SS |
8449 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
8450 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 8451 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 8452 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 8453 | |
1a966eab AC |
8454 | add_cmd ("once", no_class, enable_once_command, _("\ |
8455 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8456 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8457 | &enablebreaklist); |
8458 | ||
1a966eab AC |
8459 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8460 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8461 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8462 | &enablebreaklist); |
8463 | ||
1a966eab AC |
8464 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
8465 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
8466 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
8467 | &enablelist); |
8468 | ||
1a966eab AC |
8469 | add_cmd ("once", no_class, enable_once_command, _("\ |
8470 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
8471 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
8472 | &enablelist); |
8473 | ||
1bedd215 AC |
8474 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
8475 | Disable some breakpoints.\n\ | |
c906108c SS |
8476 | Arguments are breakpoint numbers with spaces in between.\n\ |
8477 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 8478 | A disabled breakpoint is not forgotten, but has no effect until reenabled."), |
c906108c SS |
8479 | &disablelist, "disable ", 1, &cmdlist); |
8480 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
8481 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
8482 | if (xdb_commands) | |
1bedd215 AC |
8483 | add_com ("sb", class_breakpoint, disable_command, _("\ |
8484 | Disable some breakpoints.\n\ | |
c906108c SS |
8485 | Arguments are breakpoint numbers with spaces in between.\n\ |
8486 | To disable all breakpoints, give no argument.\n\ | |
1bedd215 | 8487 | A disabled breakpoint is not forgotten, but has no effect until reenabled.")); |
c906108c | 8488 | |
1a966eab AC |
8489 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
8490 | Disable some breakpoints.\n\ | |
c906108c SS |
8491 | Arguments are breakpoint numbers with spaces in between.\n\ |
8492 | To disable all breakpoints, give no argument.\n\ | |
8493 | A disabled breakpoint is not forgotten, but has no effect until reenabled.\n\ | |
1a966eab | 8494 | This command may be abbreviated \"disable\"."), |
c906108c SS |
8495 | &disablelist); |
8496 | ||
1bedd215 AC |
8497 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
8498 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
8499 | Arguments are breakpoint numbers with spaces in between.\n\ |
8500 | To delete all breakpoints, give no argument.\n\ | |
8501 | \n\ | |
8502 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 8503 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
8504 | &deletelist, "delete ", 1, &cmdlist); |
8505 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 8506 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 8507 | if (xdb_commands) |
1bedd215 AC |
8508 | add_com ("db", class_breakpoint, delete_command, _("\ |
8509 | Delete some breakpoints.\n\ | |
c906108c | 8510 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 8511 | To delete all breakpoints, give no argument.\n")); |
c906108c | 8512 | |
1a966eab AC |
8513 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
8514 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
8515 | Arguments are breakpoint numbers with spaces in between.\n\ |
8516 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 8517 | This command may be abbreviated \"delete\"."), |
c906108c SS |
8518 | &deletelist); |
8519 | ||
1bedd215 AC |
8520 | add_com ("clear", class_breakpoint, clear_command, _("\ |
8521 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
8522 | Argument may be line number, function name, or \"*\" and an address.\n\ |
8523 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
8524 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
8525 | If an address is specified, breakpoints at that address are cleared.\n\ |
8526 | \n\ | |
8527 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
8528 | is executing in.\n\ |
8529 | \n\ | |
1bedd215 | 8530 | See also the \"delete\" command which clears breakpoints by number.")); |
c906108c | 8531 | |
1bedd215 | 8532 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
8533 | Set breakpoint at specified line or function.\n" |
8534 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 8535 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 8536 | |
c906108c SS |
8537 | add_com_alias ("b", "break", class_run, 1); |
8538 | add_com_alias ("br", "break", class_run, 1); | |
8539 | add_com_alias ("bre", "break", class_run, 1); | |
8540 | add_com_alias ("brea", "break", class_run, 1); | |
8541 | ||
502fd408 | 8542 | if (xdb_commands) |
c906108c SS |
8543 | { |
8544 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
8545 | add_com_alias ("bu", "ubreak", class_breakpoint, 1); | |
c906108c SS |
8546 | } |
8547 | ||
8548 | if (dbx_commands) | |
8549 | { | |
1bedd215 AC |
8550 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
8551 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
8552 | &stoplist, "stop ", 1, &cmdlist); |
8553 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 8554 | _("Break in function or address."), &stoplist); |
c5aa993b | 8555 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 8556 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
8557 | add_com ("status", class_info, breakpoints_info, _("\ |
8558 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8559 | The \"Type\" column indicates one of:\n\ |
8560 | \tbreakpoint - normal breakpoint\n\ | |
8561 | \twatchpoint - watchpoint\n\ | |
8562 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8563 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8564 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8565 | address and file/line number respectively.\n\ |
8566 | \n\ | |
8567 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8568 | are set to the address of the last breakpoint listed unless the command\n\ |
8569 | is prefixed with \"server \".\n\n\ | |
c906108c | 8570 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8571 | breakpoint set.")); |
c906108c SS |
8572 | } |
8573 | ||
1bedd215 AC |
8574 | add_info ("breakpoints", breakpoints_info, _("\ |
8575 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8576 | The \"Type\" column indicates one of:\n\ |
8577 | \tbreakpoint - normal breakpoint\n\ | |
8578 | \twatchpoint - watchpoint\n\ | |
8579 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8580 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8581 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8582 | address and file/line number respectively.\n\ |
8583 | \n\ | |
8584 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8585 | are set to the address of the last breakpoint listed unless the command\n\ |
8586 | is prefixed with \"server \".\n\n\ | |
c906108c | 8587 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8588 | breakpoint set.")); |
c906108c SS |
8589 | |
8590 | if (xdb_commands) | |
1bedd215 AC |
8591 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
8592 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8593 | The \"Type\" column indicates one of:\n\ |
8594 | \tbreakpoint - normal breakpoint\n\ | |
8595 | \twatchpoint - watchpoint\n\ | |
8596 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
8597 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
8598 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
8599 | address and file/line number respectively.\n\ |
8600 | \n\ | |
8601 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8602 | are set to the address of the last breakpoint listed unless the command\n\ |
8603 | is prefixed with \"server \".\n\n\ | |
c906108c | 8604 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 8605 | breakpoint set.")); |
c906108c | 8606 | |
1a966eab AC |
8607 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
8608 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
8609 | The \"Type\" column indicates one of:\n\ |
8610 | \tbreakpoint - normal breakpoint\n\ | |
8611 | \twatchpoint - watchpoint\n\ | |
8612 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
8613 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
8614 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
8615 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
8616 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
8617 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
8618 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
8619 | address and file/line number respectively.\n\ |
8620 | \n\ | |
8621 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
8622 | are set to the address of the last breakpoint listed unless the command\n\ |
8623 | is prefixed with \"server \".\n\n\ | |
c906108c | 8624 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 8625 | breakpoint set."), |
c906108c SS |
8626 | &maintenanceinfolist); |
8627 | ||
44feb3ce TT |
8628 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
8629 | Set catchpoints to catch events."), | |
8630 | &catch_cmdlist, "catch ", | |
8631 | 0/*allow-unknown*/, &cmdlist); | |
8632 | ||
8633 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
8634 | Set temporary catchpoints to catch events."), | |
8635 | &tcatch_cmdlist, "tcatch ", | |
8636 | 0/*allow-unknown*/, &cmdlist); | |
8637 | ||
8638 | /* Add catch and tcatch sub-commands. */ | |
8639 | add_catch_command ("catch", _("\ | |
8640 | Catch an exception, when caught.\n\ | |
8641 | With an argument, catch only exceptions with the given name."), | |
8642 | catch_catch_command, | |
8643 | CATCH_PERMANENT, | |
8644 | CATCH_TEMPORARY); | |
8645 | add_catch_command ("throw", _("\ | |
8646 | Catch an exception, when thrown.\n\ | |
8647 | With an argument, catch only exceptions with the given name."), | |
8648 | catch_throw_command, | |
8649 | CATCH_PERMANENT, | |
8650 | CATCH_TEMPORARY); | |
8651 | add_catch_command ("fork", _("Catch calls to fork."), | |
8652 | catch_fork_command_1, | |
8653 | (void *) (uintptr_t) catch_fork_permanent, | |
8654 | (void *) (uintptr_t) catch_fork_temporary); | |
8655 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
8656 | catch_fork_command_1, | |
8657 | (void *) (uintptr_t) catch_vfork_permanent, | |
8658 | (void *) (uintptr_t) catch_vfork_temporary); | |
8659 | add_catch_command ("exec", _("Catch calls to exec."), | |
8660 | catch_exec_command_1, | |
8661 | CATCH_PERMANENT, | |
8662 | CATCH_TEMPORARY); | |
8663 | add_catch_command ("load", _("\ | |
8664 | Catch library loads.\n\ | |
8665 | With an argument, catch only loads of that library."), | |
8666 | catch_load_command_1, | |
8667 | CATCH_PERMANENT, | |
8668 | CATCH_TEMPORARY); | |
8669 | add_catch_command ("unload", _("\ | |
8670 | Catch library unloads.\n\ | |
8671 | With an argument, catch only unloads of that library."), | |
8672 | catch_unload_command_1, | |
8673 | CATCH_PERMANENT, | |
8674 | CATCH_TEMPORARY); | |
8675 | add_catch_command ("exception", _("\ | |
8676 | Catch Ada exceptions, when raised.\n\ | |
8677 | With an argument, catch only exceptions with the given name."), | |
8678 | catch_ada_exception_command, | |
8679 | CATCH_PERMANENT, | |
8680 | CATCH_TEMPORARY); | |
8681 | add_catch_command ("assert", _("\ | |
8682 | Catch failed Ada assertions, when raised.\n\ | |
8683 | With an argument, catch only exceptions with the given name."), | |
8684 | catch_assert_command, | |
8685 | CATCH_PERMANENT, | |
8686 | CATCH_TEMPORARY); | |
c5aa993b | 8687 | |
1bedd215 AC |
8688 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
8689 | Set a watchpoint for an expression.\n\ | |
c906108c | 8690 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8691 | an expression changes.")); |
65d12d83 | 8692 | set_cmd_completer (c, expression_completer); |
c906108c | 8693 | |
1bedd215 AC |
8694 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
8695 | Set a read watchpoint for an expression.\n\ | |
c906108c | 8696 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8697 | an expression is read.")); |
65d12d83 | 8698 | set_cmd_completer (c, expression_completer); |
c906108c | 8699 | |
1bedd215 AC |
8700 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
8701 | Set a watchpoint for an expression.\n\ | |
c906108c | 8702 | A watchpoint stops execution of your program whenever the value of\n\ |
1bedd215 | 8703 | an expression is either read or written.")); |
65d12d83 | 8704 | set_cmd_completer (c, expression_completer); |
c906108c SS |
8705 | |
8706 | add_info ("watchpoints", breakpoints_info, | |
1bedd215 | 8707 | _("Synonym for ``info breakpoints''.")); |
c906108c SS |
8708 | |
8709 | ||
920d2a44 AC |
8710 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
8711 | respond to changes - contrary to the description. */ | |
85c07804 AC |
8712 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
8713 | &can_use_hw_watchpoints, _("\ | |
8714 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
8715 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
8716 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
8717 | such is available. (However, any hardware watchpoints that were\n\ | |
8718 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
8719 | hardware.)"), |
8720 | NULL, | |
920d2a44 | 8721 | show_can_use_hw_watchpoints, |
85c07804 | 8722 | &setlist, &showlist); |
c906108c SS |
8723 | |
8724 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 8725 | |
1bedd215 | 8726 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
8727 | Breakpoint specific settings\n\ |
8728 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 8729 | pending breakpoint behavior"), |
fa8d40ab JJ |
8730 | &breakpoint_set_cmdlist, "set breakpoint ", |
8731 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 8732 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
8733 | Breakpoint specific settings\n\ |
8734 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 8735 | pending breakpoint behavior"), |
fa8d40ab JJ |
8736 | &breakpoint_show_cmdlist, "show breakpoint ", |
8737 | 0/*allow-unknown*/, &showlist); | |
8738 | ||
7915a72c AC |
8739 | add_setshow_auto_boolean_cmd ("pending", no_class, |
8740 | &pending_break_support, _("\ | |
8741 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
8742 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
8743 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
8744 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
8745 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 8746 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 8747 | NULL, |
920d2a44 | 8748 | show_pending_break_support, |
6e1d7d6c AC |
8749 | &breakpoint_set_cmdlist, |
8750 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
8751 | |
8752 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
8753 | |
8754 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
8755 | &automatic_hardware_breakpoints, _("\ | |
8756 | Set automatic usage of hardware breakpoints."), _("\ | |
8757 | Show automatic usage of hardware breakpoints."), _("\ | |
8758 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
8759 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
8760 | a warning will be emitted for such breakpoints."), | |
8761 | NULL, | |
8762 | show_automatic_hardware_breakpoints, | |
8763 | &breakpoint_set_cmdlist, | |
8764 | &breakpoint_show_cmdlist); | |
74960c60 | 8765 | |
33e5cbd6 PA |
8766 | add_setshow_enum_cmd ("always-inserted", class_support, |
8767 | always_inserted_enums, &always_inserted_mode, _("\ | |
74960c60 VP |
8768 | Set mode for inserting breakpoints."), _("\ |
8769 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
8770 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
8771 | resumed, and removed when execution stops. When this mode is on,\n\ | |
8772 | breakpoints are inserted immediately and removed only when the user\n\ | |
8773 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
8774 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
8775 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
8776 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
8777 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
74960c60 VP |
8778 | NULL, |
8779 | &show_always_inserted_mode, | |
8780 | &breakpoint_set_cmdlist, | |
8781 | &breakpoint_show_cmdlist); | |
765dc015 VP |
8782 | |
8783 | automatic_hardware_breakpoints = 1; | |
c906108c | 8784 | } |